Mold Bases & Plates

MOLD BASES AND PLATES

Mold Bases and Plates

Table of Contents

Introduction Terms and Conditions of Sale . . . . . . . . . . . . . . . . 4 Sales and Ordering Information . . . . . . . . . . . . . . 5 Mold and Die Steels . . . . . . . . . . . . . . . . . . . . . . . . 8 MoldBaseBenefits.........................9 DMEItemNumberSystem.. . . . . . . . . . . . . . . . . .10 Mold Base Terminology . . . . . . . . . . . . . . . . . . . . . 11 Machining of Clamp Slots . . . . . . . . . . . . . . . . . . . 12

Cavity Retainer Sets Cavity Retainer Sets . . . . . . . . . . . . . . . . . . . . . . . . 162-184

Mold Plates StandardMoldPlates.. . . . . . . . . . . . . . . . . . . . . .188-193 EjectorPlates..............................194 EjectorRetainers...........................195 Spacer Blocks/Rails . . . . . . . . . . . . . . . . . . . . . . . . 196-199 Ejector Housings . . . . . . . . . . . . . . . . . . . . . . . . . . . 200-201 Small Mold Base Ejector Plates, . . . . . . . . . . . . . 202 Retainers & Housings DieBlocks&Plates.. . . . . . . . . . . . . . . . . . . . . . . .203-204 CavityInsertBlocks.........................205 LargeMoldPlates..........................206-210

American Standard Mold Bases

Sprue Bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Locating Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 ClampSlots................................17 Guided Ejection Systems . . . . . . . . . . . . . . . . . . . . 18 GuidePinsandBushings.. . . . . . . . . . . . . . . . . . .19 Upper & Lower Assembly Screws . . . . . . . . . . . . 20-21 Return Pins, Stop Pins and Sprue Puller Pins . . 22 Ejector Assembly Screws . . . . . . . . . . . . . . . . . . . 23 Leader Pin Vents, . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Pry Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Lifting Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Pockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Contour & Roughing Services . . . . . . . . . . . . . . . . 25 SpringPockets.............................25 MoldStrapHoles...........................26 Mold Interlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Support Pillars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 InsulatorSheets............................27 Support Pillars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3-Plate Extension Bushings . . . . . . . . . . . . . . . . . . 28 Waterlines.................................28 Standard A-Series Mold Bases . . . . . . . . . . . . . .31-121 B-Series Mold Bases . . . . . . . . . . . . . . . . . . . . . . .122 X-, AX- and T-Series Mold Bases . . . . . . . . . . . . . 123-146 Features...................................124-125 X-Series...................................126-133 AX-Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134-135 T-Series...................................136-146 3-Plate Extension Bushings . . . . . . . . . . . . . . . . . . 147 Ball Bushings for Floating Plates . . . . . . . . . . . . . 148 Small and Shuttle Mold Bases . . . . . . . . . . . . . . . 150 Small and Custom . . . . . . . . . . . . . . . . . . . . . . . . . . 152-155 ShuttleMoldBases.. . . . . . . . . . . . . . . . . . . . . . . .156-159

Molding Supplies Mold Cleaner and Mold Saver . . . . . . . . . . . . . . . 214

Technical Reference Metric Equivalents and Conversions . . . . . . . . . . 216 Steel Hardness Chart . . . . . . . . . . . . . . . . . . . . . . . 217 TensileStrength............................218 SteelDesignations..........................219 Tables for Determining Metric Tolerances . . . . . 220-229

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Mold Bases and Plates

Index

Mold Base 1329A..............................................................................74-75 Mold Base 1518A..............................................................................76-77 Mold Base 1524A..............................................................................78-79 Mold Base 1529A..............................................................................80-81 Mold Base 1616A..............................................................................82-83 Mold Base 1620A..............................................................................84-85 Mold Base 1623A..............................................................................86-87 Mold Base 1626A..............................................................................88-89 Mold Base 1629A..............................................................................90-91 Mold Base 1635A..............................................................................92-93 Mold Base 1724A..............................................................................94-95 Mold Base 1729A..............................................................................96-97 Mold Base 1818A..............................................................................98-99 Mold Base 1820A..........................................................................100-101 Mold Base 1823A..........................................................................102-103 Mold Base 1826A..........................................................................104-105 Mold Base 1829A..........................................................................106-107 Mold Base 1835A..........................................................................108-109 Mold Base 1924A..........................................................................110-111 Mold Base 1929A..........................................................................112-113 Mold Base 1935A..........................................................................114-115 Mold Base 2424A..........................................................................116-117 Mold Base 2429A .........................................................................118-119 Mold Base 2435A..........................................................................120-121 Mold Base Features...........................................................16-28, 124-125 Mold Cleaner and Mold Saver..............................................................214 Mold Plates...................................................................................188-193 Mold Strap Holes....................................................................................26 Parallels.........................................................................see Spacer Blocks Pillow............................................................................see Support Pillars Pockets. ...................................................................................................25 Pry Slots...................................................................................................24 Rails...............................................................................see Spacer Blocks Rear Cavity Plate......................................................................see B Plate Return Pins..............................................................................................22 Risers.............................................................................see Spacer Blocks Rotary Ground Mold Plates...................................................................189 Shuttle Mold Bases.......................................................................156-159 Small Mold Bases.........................................................................152-155 Spacer Blocks........................................................................................196 Spacers..........................................................................see Spacer Blocks Spring Pockets.........................................................................................25 Sprue Bushings........................................................................................16 Sprue Puller Pins.....................................................................................22 Steel Designations....................................................................................8 Steel Hardness Chart............................................................................217 Stop Pins..................................................................................................22 Stripper Plate...................................................................................11, 124 Support Pillars.........................................................................................27 Support Plate...........................................................................................11 T-Series Mold Bases................................................................11, 136-146 Tensile Strength.....................................................................................218 Upper and Lower Assembly Screws.................................................20-21 Waterlines...............................................................................................28 X-Plate............................................................................see Stripper Plate X-Series Stripper Mold Bases.................................................11, 126-133

3-Plate Extension Bushings...................................................................147 A-Series Mold Bases.........................................................................11, 31 A-Slotted Rail........................................................................................197 AX-Series Mold Bases....................................................................11, 134. Adapter Plates, Custom Universal ........................................................1 50 Adapter Plates, Small Mold Base.........................................................152 Additional Assembly SHCS, Minimum Recommended...........................20. Arburg Locating Rings........................................................................ ...1 6 Assembly Screws (SHCS)........................................................................20 B-Series Mold Bases.......................................................................11, 122 Ball Bushings.........................................................................................148 Bolster Plate...................................................................see Support Plate Cavity Insert Blocks...............................................................................205 Cavity Retainer Sets..............................................................................162 Clamp Slots.......................................................................................12, 17 Column..........................................................................see Support Pillars Contour Roughing Services.....................................................................25 Core Retainer Plate..................................................................see B Plate Determining Metric Tolerances.............................................................220 Die Blocks and Plates............................................................................203 Ejector Assembly Screws........................................................................2 0. Ejector Housing ..................................................................................... 2 3 Finish Ground Mold Plates....................................................................188 Floating Plate..................................................................see Stripper Plate Guide Pins and Bushings.........................................................................19 Guided Ejection Systems.........................................................................18 Insulator Sheets......................................................................................27 Interlocks.................................................................................................26 Leader Pin Vents......................................................................................23 Lifting Holes............................................................................................24 Locating Rings.........................................................................................16 Lower Half................................................................................see B Plate Machining Services, Clamp Slots.....................................................12, 17 Metric Equivalents and Conversions.....................................................216 Mold and Die Steel Descriptions..............................................................8 Mold Base 88A..................................................................................36-37 Mold Base 812A................................................................................38-39 Mold Base 108A................................................................................40-41 Mold Base 1012A..............................................................................42-43 Mold Base 1016A..............................................................................44-45 Mold Base 1020A..............................................................................46-47 Mold Base 1112A..............................................................................48-49 Mold Base 1114A..............................................................................50-51 Mold Base 1118A..............................................................................52-53 Mold Base 1123A..............................................................................54-55 Mold Base 1212A..............................................................................56-57 Mold Base 1215A..............................................................................58-59 Mold Base 1220A..............................................................................60-61 Mold Base 1223A..............................................................................62-63 Mold Base 1315A..............................................................................64-65 Mold Base 1318A..............................................................................66-67 Mold Base 1321A..............................................................................68-69 Mold Base 1323A..............................................................................70-71 Mold Base 1326A..............................................................................72-73

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Mold Bases and Plates

Terms and Conditions of Sale

DME COMPANY LLC (“SELLER”) TERMS AND CONDITIONS OF SALE

ucts, interruption of business, downtime costs, increased operating costs, or any special, consequential, incidental indirect or punitive damages, whether incurred by Buyer or Buyer’s customers. 5.3. Because the conditions of actual production in each end user’s plant vary considerably, Buyer assumes all risk for the results obtained by use of Seller’s prod- ucts in the practice of any process, whether in terms of operating costs, general effectiveness, success or failure, and regardless of any oral or written statements made by Seller related to the use of its products. 6. SECURITY INTEREST. Buyer agrees that the Seller shall have and retain a purchase money security interest in the Products securing the payment of all sums becoming due hereunder. Such security interest shall attach, upon completion of manufacture, to the Products and to any parts or accessories attached to the Prod- ucts and to the proceeds of any sale thereof. Buyer represents that the Products are being acquired for use in its business and that such Products will not, without prior written consent of the Seller, be sold or removed from the Buyer’s place of business to which delivery is made. Buyer agrees upon Seller’s request to execute any financing statements or other documents required to perfect, continue or renew Seller’s security interest in the Products. 7. CANCELLATION: Unless otherwise agreed, Buyer may cancel all or any part of the order by written notice received by Seller before the completion of the order. On receipt of such cancellation notice, all work on the order or part thereof canceled will be stopped as promptly as is reasonably possible. Buyer will then be invoiced for and will pay to Seller as liquidated damages a cancellation charge. For completed items, the charge will be equal to their established prices. For items not completed, the charge will be equal to 135% of Seller’s full cost as determined by Seller in accordance with Seller’s standard accounting practices (which includes burden and overhead), plus a charge for any packing and storage, less a credit for the balance of the material as scrap. 8. RETURNS: All returned items require a Return Merchandise Authorization (RMA) number from DME. Returns are subject to a quality inspection to validate whether it can be returned to inventory. Mold bases, plates, special components, made-to- order products and other date-sensitive products are non-returnable items. Items returned to DME without prior authorization(RMA)may be returned to sender. Items returned for stated defect or non-conforming reason require detailed explanation. No products are returnable beyond 30 days after receipt. 9. CONFIDENTIALITY. Any nonpublic information, including without limitation, Seller’s pricing information and the contents of Seller’s quotation or proposal and Buyer’s purchase order, exchanged between the parties is deemed confidential (“Confidential Information”). Each party agrees to maintain the other party’s Confidential Information in confidence, to not disclose the same to any third parties, and to use it only in connection with this sale. These restrictions shall expire two (2) years after the date of disclosure. This provision does not modify or supersede any separate confidentiality or nondisclosure contract signed by the parties. 10. FORCE MAJEURE: Seller shall not be liable for any delay in performance or nonperformance which is due to war, fire, flood, pandemic, acts of God, acts of third parties, acts of governmental authority or any agency or commission thereof, accident, breakdown of products, differences with employees or similar or dis - similar causes beyond Seller’s reasonable control, including but not limited to, those interfering with production, supply or transportation of products, raw materials or components or Seller’s ability to obtain, on terms Seller deem reasonable, material, labor, products or transportation. 11. MERGER CLAUSE: This Contract entirely supersedes any prior oral or written representations, correspondence, proposals, or contracts between the parties regarding the products. This writing constitutes the final and total expression of such contract between the parties, and it is a complete and exclusive statement of the terms of that contract. 12. ASSIGNMENT: Neither party may assign this Contract without the written consent of the other party, except that Seller may assign this Contract to a third party that acquires substantially all of Seller’s assets and Seller may assign the flow of funds arising out of this Contract. 13. COMPLIANCE WITH LAWS. Each party agrees to comply with all applicable laws in the performance of its obligations; Buyer shall not trans-ship, re-export, divert or redirect Products outside of the original country of delivery without Seller’s prior written consent. 14. GOVERNING LAW: This Contract shall be governed by and construed in accor- dance with the laws of the State of Michigan, without regard to the Convention for the International Sale of Goods (CISG), which shall not apply.

1. ACCEPTANCE OF TERMS: Seller’s offer is expressly conditioned upon Buyer’s acceptance of these Terms and Conditions, and Seller expressly objects to any additional or different terms proposed by Buyer. Any subse - quent purchase order issued by Buyer shall constitute Buyer’s agreement to these Terms and Conditions. Any contrary terms and conditions contained in any purchase order, facility entry form, or other instrument issued by the Buyer are expressly rejected and shall not apply to this transaction. Unless otherwise specified in the quotation, Seller’s quotation shall expire 30 days from its date and may be modified or withdrawn by Seller before receipt of Buyer’s conforming purchase order. 2. PAYMENT TERMS: Payment is due in accordance with any applicable progress, advance or other agreed upon payment schedule, or, if no such schedule has been agreed to, no later than 30 days from the date of invoice. Buyer shall pay a late payment charge computed at the lower of 1.5% per month on any overdue balance, or the maximum rate permitted by law. No cash discount is provided. If at any time Seller reasonably determines that Buyer’s financial condition or payment history does not justify continuation of Seller’s performance, Seller shall be entitled to require full or partial payment in advance or otherwise restructure payments, request additional forms of payment security, suspend its performance or terminate the order. 3. DELIVERY 3.1 In the United States, products are sold FCA Incoterms 2020 point of origin; for export sales, terms are FCA Incoterms port of export. Unless otherwise agreed in writing, title and risk of loss shall pass at the time of shipment. Buyer is responsible for all taxes, duties, fees, or other governmental charges related to its purchase of goods, with the sole exception of taxes on Seller’s income. Unless otherwise agreed, Buyer shall pay all packing and delivery costs. 3.2. Seller’s quoted lead times and targeted delivery dates are good faith estimates and are not binding on Seller. Buyer’s acceptance of delivery of Seller’s products from the carrier shall constitute a waiver of any claim for delay. If Seller notifies Buyer that the products are ready for shipment and Buyer delays delivery, then Seller may charge Buyer a storage fee equal to 1.5% of the contract price per month for each month of delay. Such storage fees are in addition to any other remedies Seller may have. 3.3. Buyer shall have a reasonable opportunity to inspect any products prior to shipment. Products shall be deemed to be accepted upon the earlier of: (i) inspection at Seller’s plant (provided that no reasonable objection is then raised by Buyer), or (ii) if no inspection is requested, then at shipment. If an objection is made during inspection, then Products shall be deemed ac- cepted upon resolution of the objection by Seller. 4. WARRANTY: 4.1. Seller’s express product warranty be as stated in DME’s order specifica - tion documentation and shall run from the date of shipment (the “Warranty Period”). During the Warranty Period, Seller warrants that the products and services sold hereunder will be free from material defects in material, workmanship and title (the “Warranty”). 4.2. If, during the Warranty Period, Seller reasonably determines that the products do not meet the Warranty, then Seller shall, at its option, repair or replace the defective product or component thereof, reperform any defec- tive services at Seller’s expense, or refund or credit to Buyer its purchase price for the defective products or services. 4.3. The Warranty will be void and will not apply: (i) when Buyer fails to promptly notify Seller of any alleged defect, (ii) when Buyer fails to properly install, maintain, or operate the products, (iii) to any product or parts thereof with a useful life, under normal operating conditions, inherently shorter than 1 month, or (iv) to products which were not made by Seller or any of Seller’s affiliates, provided that in such cases Seller shall use reasonable efforts to pass on to Buyer the manufacturer’s warranty. 4.4. If Seller provides any parts or services to repair a product that is not un- der Warranty, then such parts and services will be billed to Buyer at Seller’s prevailing rates for time and materials. 4.5. The Warranty set out above is the sole and exclusive warranty provided by Seller for its products and is in lieu of, and Seller expressly disclaims, all other warranties, express or implied, oral, written or statutory. THERE ARE NO WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PURPOSE FOR SELLER’S PRODUCTS. 5. LIMITATION OF LIABILITIES: 5.1. Seller’s total liability to Buyer arising out of or resulting from this Contract or related in any way to Seller’s products or parts thereof shall not exceed the contract price for such products. 5.2. Seller shall not be liable for loss of profit or revenues, loss of use of prod -

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Mold Bases and Plates

Sales and Ordering Information

U.S.A.

TERMS AND CONDITIONS OF SALE: See previous page.

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PHONE ORDERS – TOLL FREE: 800-626-6653. Our Customer Service Dept. operates Monday through Friday from

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instead of “1”). Our Customer Service Representatives will be happy to answer your questions on DME products or services,

provide on-the-spot feedback on product availability and shipping details, or take any messages you wish relayed to your local

DME sales, manufacturing or technical service representatives.

eSTORE: Open 24/7 - quote, check stock, order

CHECKS OR MONEY ORDERS: When paying invoices by check or money order, please make payable to DME Company.

Include remittance copy of invoice and mail to:

● DME Company, PO Box 854867 Minneapolis, MN 55485-4867

MACHINING SERVICES: Prints for quotation on special machining work can be sent by EDI to dme_cad@dme.net

To obtain prices and delivery on special mold base orders or to check status of special work in progress please contact

Customer Service.

CANADA

TERMS AND CONDITIONS OF SALE: See previous page.

PHONE ORDERS: Contact our Windsor , Ontario office at 800-387-6600

CHECK OR MONEY ORDERS: Make payable to DME Company Ltd. Include remittance copy of invoice and mail to : DME

Company 5345 Outer Drive - Unit 3, Old Castle, ON N9G 0C4

WALK-IN ORDERS, PICK-UPS, RETURNS, AND SPECIAL MACHINING: Contact our Windsor office.

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Mold Bases and Plates

Mold Bases: What Every Molder Should Know

Today’s mold-building process is a complex one for the molder, who must grapple with a long list of design details before placing a tooling order. It’s understandable that much of the buyer’s attention goes to the “heart” of the injection mold, the core and cavity inserts, since they have the most visible influence on the molded part. Yet all sorts of ancillary tooling components, to which the molder might not be inclined to give much thought, can also make or break a mold. One item that sometimes gets lost in the shuffle is the mold base, even though the wrong one can severely limit a mold’s productivity. Rather than an afterthought, mold base selection should be considered critical to the profit - ability of the entire molding project. When selecting a mold base for a particular job, first ask a few key questions about the part’s design and processing demands: What kind of ejection does it need? Does it have a cam action or some other mold-action device? What are the volume requirements? What type of machine will it run on? Answer these design and processing questions, and you’ll be well on your way to picking the standardized or special-purpose mold base best suited to your application.

Standard Mold Base Styles For most applications, a standard mold base will fit the bill. The most common of these is the A-series, which has the flexibility to fit into the widest variety of molding applications. A-style models have a four-plate design: (from top to bottom) top clamp plate, A-plate, B-plate, support plate, ejector retainer, ejector bar, and ejector housing. Mold makers using an A-series mold base typically machine through pockets in the A and B-plates to accept just about any kind of core and cavity insert. The B-series mold base represents an economy version of the A-style. The B-series two-plate design combines the top clamp plate and the A-plate into one component called the A-Clamping Plate or ACP. Likewise, a beefed-up B-plate eliminates the need for a support plate on the core side of the mold. Molders can use the less-costly B-series when the part design allows the cavity and core to be machined directly into the cavity plates. If the mold will be used with cavity inserts, they must be machined into blind pockets. The compactness of the B-series mold base also makes it applicable whenever overall mold height must be limited in order to fit the tool in a given molding machine.

TOP CLAMPING PLATE

A-PLATE

B-PLATE

SUPPORT PLATE

A-Series Mold Base Assembly The most frequently used standard assembly, the A-Series Mold Base, is available in 43 sizes from 7.875 x 7.875 to 23.75 x 35.5.

“Core and cavity inserts … have the most visible influence on the molded part yet … mold base selection should be considered critical to the profitability of the entire molding project.”

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Mold Bases and Plates

be running. Locating rings are available in a wide variety of configurations to fit most injection machines, but the most common locating ring has a 3.990 in. outside diameter. Sprue bushings must also match the machine, so be sure to determine the proper orifice and radius of the sprue bush - ing so it will match the machine nozzle. The most common type of sprue bushing is made from 6145 steel that has been hardened, ground, and polished for sprue release. In some applications it is desirable to use a high-conductivity copper-alloy sprue bushing.

Special-Purpose Machines Mold action and ejection requirements will often dictate the use one of three special-purpose mold bases instead of the simpler A- and B-series. One of these is the X-series, or stripper-plate, mold base. Sandwiched between the A- and B-plates, its stripper (X) plate engages the edge of a part and pushes it off the core. Typically, the X-series sees use with round parts like cups, caps, and containers. This style of mold base comes in both five- and six-plate styles- -with the six-plate version including a support plate. The AX-series mold base is used for parts requiring core detail in the cavity side of the mold. When the mold opens, that core detail is pulled so that the part remains on the ejec- tor side of the mold. The AX-series is essentially an A-series mold base with an X-1-plate, located between the A- and B-plates but attached to the top half of the mold so that it can pull the part off the core detail. The T-series, or three-plate, mold base is used when the molder would like to separate the part from the runner in the tool. T-series mold bases consist of an A Clamping plate, X1- plate, X2-plate, B-plate, and the ejector assembly and hous- ing. Unlike the other mold bases, the T-series operates with two parting lines. The first parting line, which occurs between the X1 and X2 plates, separates the part from the gate prior to opening the main parting line. The main parting line then opens and the X1-plate is actuated to pull the runner from the sprue-puller pin, thereby freeing the runner and allowing it to be ejected separately from the part being produced.

These “high-performance” sprue bushings can cool the sprue quickly when either the sprue weight is greater than the part weight, or a rigid target is needed for a robotic sprue picker, or when scrap would result from a hot sprue coming in contact with a finished part. High-performance sprue bushings are fully interchangeable with the standard bushings. A number of different clamp-slot styles are available. Whatever the style, make sure it’s compatible with the thickness of the top clamping plate on your mold base (ACP, A-plate, or AX-plate). Finally, the molder needs to determine the correct mold base height in relation to the maximum space available in the press. A mold base that won’t run in the appropriate size of press can turn potential profit into loss. In addition, be aware of the maximum stroke required to eject the part for the mold. “High-performance sprue bushings cool the sprue quickly when either the sprue weight is greater than the part weight, or a rigid target is needed for a robotic sprue picker …”

See page 11 for illustrations of standard mold base types.

Choosing A Steel Steel selection is an important aspect of specifying the right mold base. Generally there are four standard grades of steel available. See page 8 for mold and die steel descriptions. Molding Machine Considerations After you’ve picked the right style and steel for your mold base, it’s time to consider variables related to the molding machine: the locating-ring style, sprue bushing, and clamp slots. The mold maker must select the type of locating ring that will match the platens of the machine in which the mold will

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Mold Bases and Plates

Mold and Die Steels

STEEL DESCRIPTIONS Three Steels for Structural Sections DME NO. 1 STEEL No. 1 Steel is a medium carbon (SAE 1030) or equivalent, silicon-killed forging quality steel with approximately 25% greater tensile strength than typical low-carbon warehouse steels. It machines easily, but is not “sticky,” permitting a faster and smoother cut. DME NO. 2 STEEL No. 2 Steel is an AlSl 4130 or equivalent type steel. It is supplied pre-heat treated to 28-34 HRC (271-321 Bhn). A high strength steel, it is ideal for cavity and core retainer plates, clamping plates and support plates in molds and dies. ( available upon request )

DME NO. 7 STEEL No. 7 Steel is a modified AlSl 400 or equivalent series stainless steel for holder block applications. It is supplied pre-heat treated to 32-36 HRC (302-340 Bhn). This stainless steel offers corrosion-resistance and exceptional machinability but cannot be further hardened (see DME No. 6). For humid environments, corrosive plastics, “clean room” or “100% stainless” applications, it is an ideal choice for all structural (non-cavity/core) mold plates.

Three Steels for Cavities and Cores DME NO. 3 STEEL

No. 3 Steel is a P-20 AISI 4130 (modified) type cavity steel. Exceptionally clean, it is pre-heat treated to 28-34 HRC (271-321 Bhn). It provides high hardness, good machinability and exceptional polishability for both plastics molds and die cast dies.

DME NO. 5 STEEL No. 5 Steel is a thermal shock resistant, hotwork die steel (AISI-SAE H-13 type) or equivalent. Supplied fully annealed 13-20 HRC (approx. 200 Bhn) for easy machinability, it can be subsequently heat treated to the desired hardness with a minimum of deformation. Mainly used for die cast dies, it is also suitable for plastics molds with exceptional hardness or polishability requirements. DME NO. 5 Steel meets or exceeds the acceptance criteria established by the NADCA as detailed in Technical Digest Number 01-80-01D

DME NO. 6 STEEL No. 6 Steel is T-420 type or equivalent stainless steel. It is supplied fully annealed to 8-23 HRC (179-241 Bhn), making it readily machinable. It can be used for injection, compression or transfer molds where the properties of the plastics materials or excessive condensation require a highly corrosion resistant cavity steel.

OTHER TYPES OF STEEL AVAILABLE VIA SPECIAL ORDER. CONTACT DME.

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Benefits of Standard Mold Base Assemblies and Components Mold Bases and Plates

Seven major benefits of DME Standard Mold Base Assemblies and Components 1. Made of high quality, pre-finished mold and die steels that give you more for your money; more metallurgical consistency; more cleanliness in cavity steels; more reliability. 2. Assemblies, plates and components are pre-engineered to give you the economic and technical benefits of interchangeability. 3. Manufactured with the most advanced, precision equipment – and quality control tested to give you reliable performance. 4. Gives designers more freedom and flexibility – more time to devote to the truly creative aspects of mold, die, and product design. 5. Gives mold and die makers more time to concentrate on cavities and cores – thus increasing productivity as much as 40%. 6. Gives molders more quality parts per hour, more profitability – with production proven construction that outlasts the longest runs. 7. Readily available as you need them. The more popular assemblies are always in stock for same-day service. Our nationwide network of Service Centers means you have the products and the people near you to help you save time, money and inventory costs.

These three features have helped make DME Standard Mold Bases the most frequently specified mold base assemblies in the world: 1 CLAMP SLOTS that save platen space and provide maximum cavity area 2 TUBULAR DOWELS that provide more room for waterlines 3 THREE-PIECE EJECTOR HOUSING with shoulder bolts providing modular assembly

DME Standard A-Series Mold Base with Cavity Inserts

INJECTION MOLDING Injection molding is recognized as the single most important form of plastics processing. Beginning with just a handful of standardized mold bases and components in 1942, DME now offers thousands of standardized mold base assemblies and a broad variety of mold components to satisfy the consistent need for high-quality injection molds. Primarily used for thermoplastics injection molding, most of our assemblies and components are readily adaptable for the injection molding of thermosets. Future product developments from DME will include standardized components specifically designed for the injection molding of thermoset materials.

Mold Bases and Plates

DME Item Number System

The item number system employed by DME not only prevents the duplication of item numbers, but helps lessen the chances of error in the writing and production of orders. This is accomplished by incorporating actual dimensional data into the item numbers as indicated below.

MOLD BASES – A AND B-SERIES The item numbers for Standard Mold Bases in the A and B-Series combine the NOMINAL Size (width and length), the Series (A or B) and the thicknesses of the A (or A-Clamping) and B-Plates. Since all the standard mold plate thicknesses are a combination of a whole number and either 3 / 8 or 7 / 8 , the designation 13 indicates 1 and 3 / 8 ; 17 indicates 1 and 7 / 8 ; 23 indicates 2 and 3 / 8 , etc. For Example: 1016A-13-37 is the item number for a 9 7 / 8 × 16" A-Series Mold Base with A-plate 1 3 / 8 and B-plate 3 7 / 8 thick. MOLD BASES – X OR STRIPPER PLATE SERIES The item numbers for the Stripper Plate Series Mold Base combine the NOMINAL Size (width and length), the letter X for Stripper Plate, the numeral 5 or 6 (plate series) and the AX-plate thickness. Since the X-plate thickness is constant at 7 / 8 or 1 3 / 8 , and the BX-plate thickness is constant at 1 3 / 8 , 1 7 / 8 or 2 3 / 8 , depending on the mold base nominal size and number of plates in the assembly, these thicknesses are not represented in the item number. For Example: 1818X-5-13 is the item number for a 17 7 / 8 × 18", 5-plate X-series Mold Base with a 1 3 / 8 thick AX-plate. (In this case, the X-plate is 1 3 / 8 thick, and the BX- plate is 2 3 / 8 thick). AX AND T SERIES MOLD BASES The item numbers for the AX-Series Mold Bases combine the NOMINAL Size (width and length), the letters AX and the thickness of the A and B-plates. The X-1-plate thickness is specified when ordering and is omitted from the item number. For Example: 1212AX-13-37 is the item number for an 11 7 / 8 × 12" -AX-Series Mold Base with a 1 3 / 8 thick A-plate and 3 7 / 8 thick B-plate. The X-1-plate thickness (e.g. 7 / 8 ) is then specified when ordering.

The item numbers for the T-Series Mold Bases combine the NOMINAL Size (width and length), the letter T and the thickness of the X-2 and B-plates. Since the thickness of the A-Clamping plate is constant at 1 7 / 8 or 2 3 / 8 and the X-1-plate thickness is constant at 7 / 8 or 1 3 / 8 , depending on the nominal size of the mold base, these thicknesses are not represented in the item number. For Example: 1012T-23-17 is the item number for a 9 7 / 8 × 11 7 / 8 T-Series Mold Base with a 2 3 / 8 thick X-2-plate and 1 7 / 8 thick B-plate. (In this case, the A-Clamping plate is 1 7 / 8 thick and the -X-1-plate is 7 / 8 thick). CAVITY RETAINER SETS Since Cavity Retainer Sets are made up solely of an A and B-plate, the item numbers combine the NOMINAL Size, and the A and B-plate thicknesses. (The absence of the letter A, B, AX, or T distinguish these numbers from the item numbers of Standard Mold Bases). For Example: 1215-33-47 is an 11 7 / 8 × 15" Cavity Retainer Set with A-plate 3 3 / 8 and B-plate 4 7 / 8 thick. MOLD PLATES The same principle used for numbering Cavity Retainer Sets is applied to Standard Mold Plates; however, only one plate thickness is required. (Since the item numbers for retainer sets will always indicate two separate plate thicknesses, the distinction between these two items is easily identified). For Example: 1318-47 is a 13 3 / 8 × 18" Mold Plate, 4 7 / 8 thick. NOTE: While an understanding of this item number system can be very helpful in identifying and referring to the various standard sizes, the DME catalog should be consulted when ordering any standard item.

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Mold Bases and Plates

Standard Mold Base Terminology

B-SERIES ASSEMBLY

A AND REVERSE A-SERIES ASSEMBLIES

TOP CLAMPING PLATE

A CLAMPING PLATE WITH SPRUE BUSHING, LOCATING RING AND CLAMP SLOTS INSTALLED B-PLATE

A-PLATE

AX-PLATE

BX-PLATE

B-PLATE

SUPPORT PLATE

RAILS

EJECTOR RETAINER PLATE EJECTOR PLATE

REVERSE A-SERIES

BOTTOM CLAMP PLATE

Identical to the A-Series, with leader pins and bushings “reversed.“ Specify AX- and BX-plate thicknesses when ordering (rather than A and B).

EJECTOR HOUSING

When cavities and cores are to be inserted into blind pockets, or machined directly into the A- and B-plates, the B-Series Assembly is used. The Top Clamping Plate and Support Plate are omitted from the assembly.

The most frequently used Standard Assembly, the A-Series Mold Base is available in 43 sizes from 7 7 / 8 × 7 7 / 8 to 23 3 / 4 × 35 1 / 2 . or complete information.

X-SERIES (STRIPPER PLATE) ASSEMBLY

5-Plate Series

6-Plate Series

TOP CLAMPING PLATE

Most frequently used for molds requiring stripper plate ejection, the X-Series Assembly is available with a Support Plate (6-plate series) or without a Support Plate (5-plate series).

AX-PLATE

X-PLATE

BX-PLATE

SUPPORT PLATE

T-SERIES ASSEMBLY

AX-SERIES ASSEMBLY

A-CLAMPING PLATE

TOP CLAMPING PLATE

A-PLATE

X-1-PLATE

X-2-PLATE

B-PLATE

B-PLATE SUPPORT PLATE

SUPPORT PLATE

EJECTOR RETAINER PLATE EJECTOR PLATE

EJECTOR HOUSING

The AX-Series Assembly is used when the mold requires a floating plate to remain with the upper or stationary half of the assembly. It is basically an A-Series Assembly with a floating plate (X-1) added.

The T-Series Assembly is used for top runner molds that require two floating plates (X-1 – runner stripper plate, X-2 – cavity plate) to remain with the upper or stationary half of the assembly.

Mold Bases and Plates

Machining of Clamp Slots

Clamp Slots facilitate clamping the mold to the platen of the press. DME mold bases offer four slot types (shown below) to ensure the best fit for the requirements of your application.

Top Clamping Plate or A-Clamping Plate

Type A

Machined when Top Clamping Plate is 0.875 or 1.375

PRESS PLATEN

0.813

0.625

NOTE: When this plate is 0.875 thick, the slots will be machined through the thickness.

Special Top Clamping Plate, A-Clamping Plate, A-Plate, or AX-Plate

Type B

Machined in plates that are 2.375 or thicker

PRESS PLATEN

0.875

0.813

0.625

Top Clamping Plate or A-Clamping Plate

Type C

Machined only when specified by a customer

PRESS PLATEN

0.875

0.813 0.625

Special Top Clamping Plate, A-Clamping Plate, A-Plate, or AX-Plate

Type D

Machined plates that are 1.875 thick

PRESS PLATEN

0.875

0.625

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Mold Base & Plates Services

Mold Bases with optional feature-based selections

DME Mold Base and Plate Services

Table of Contents

Mold Base Features .............................................. 20 to 23

Contour Roughing Services...........................................28

Precision machined custom mold bases and plates with lengths up to 90”; rough milling of your complex part shapes into mold plates

Immediate price and stock information 24/7.

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DME Mold Base Features

DOZENS OF MOLD BASE FEATURES TO CHOOSE FROM.

Mold Bases Features

Mold Base Features

Sprue Bushings & Locating Rings

Classic 2.0 Mold Bases are machined for and include a Sprue Bushing and Locating Ring. You may choose to omit either or both parts. Omitting the Machining for either makes this a non-standard mold base. See DME Mold Component catalog for Sprue Bushing and Locating Ring options

Plate surface in parting line direction

–X

The Sprue Bushing provides a seat at the spherical radius for the nozzle of the press. This provides a path for the material from the nozzle to the runner system. S.A.E. 6145 Steel Sprue Bushings come in 2 stem diameters and a wide variety of lengths.

Z The Locating Ring aligns the mold base to the stationary platen side of the press and positions the sprue bushing correctly. LH1 OFFSET O LH2 LH3

T MAX.

Steel Sprue Bushings 7 series 2 stem diameters Wide variety of lengths Multiple Orifice & Radius combinations

Locating ring #6501 shown

DME Locating Rings

Ø D

DESCRIPTION

ITEM NUMBER

6500 6501

2.615

3.990 STANDARD SERIES

6501LN

3.990 LN SERIES

High Performance Sprue Bushings 2 series 2 stem diameters Wide variety of lengths.

6502 6503 6504

4.990 2.000

3.990 CLAMP TYPE 5.990 LN SERIES

6505LN

6510 6511 6520 6521 6522 6524

7.995 2.990

3.990 EXTENSION NOZZLE TYPE

3.990 STANDARD SERIES

3.990 EXTENSION NOZZLE TYPE

3.990 CLAMP TYPE

6534**

1.574 TOP AND BOTTOM RING

6535 6536 6537

3.541

3D printed Conformal Cooled Sprue Bushings 2 series 2 stem diameters Wide variety of lengths.

4.331 TOP RING

4.331 BOTTOM RING 3.990 STANDARD SERIES

6541* 6544*

3.990 CLAMP TYPE

* For use with high-temperature insulator sheets. ** For use with 3.5 x 3.75 Arburg Mold Bases. See DME Mold Components catalog for dimensions of other locating rings.

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Mold Base Features

Clamp Slots facilitate clamping the mold to the platen of the press. DME American Standard Mold Bases offer four slot types (shown below) to ensure the best fit for the requirements of your application. Clamp slots come standard depending on the plate thicknesses as described below. Optional/special clamp slots ore available upon request Clamp Slots

Top Clamping Plate or A-Clamping Plate

Clamp Slot Types

PRESS PLATEN

Type A - Machined when

0.813

Top Clamping Plate is 0.875 or 1.375

0.625

NOTE: When this plate is 0.875 thick, the slots will be machined through the thickness.

Type B - Machined in plates that are 2.375 or thicker

Special Top Clamping Plate, A-Clamping Plate, A-Plate, or AX-Plate

Type C - Machined only when specified by a customer and top clamp plate is 1.375

PRESS PLATEN

0.875

0.813

Type D - Machined plates that are 1.875 thick

0.625

Top Clamping Plate or A-Clamping Plate

PRESS PLATEN

0.875

0.813 0.625

Special Top Clamping Plate, A-Clamping Plate, A-Plate, or AX-Plate

Other/special options available: • Omit upper clamp slot • Omit lower clamp slot (3-piece housing supplied)

PRESS PLATEN

• Machine entire length • Machine all four sides

0.875

0.625

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Mold Base Features

Guided Ejection Systems hold the ejector assembly in alignment and support the weight of the ejector assembly throughout the molding cycle – greatly reducing wear on ejection components and preventing cocking of the ejector assembly. System 3 with solid bronze GE Bushings comes as standard or can be omitted on for all Classic 2.0 mold bases. Optional bushing styles available are bronze-plated or self-lubricating. System 1 & 2 can be installed as a special order. Guided Ejection

Guided Ejection Positions ”L” ”L”

”L”

GE-X (4)

GE-X (2)

SYSTEM 3 - Standard/Optional Pins installed in the ejector housing permit fast installation. When the ejector housing is removed from the mold base, the complete ejector assembly is removed. Maching does not extend into the Support Plate GE dia. leader pin for guided ejection (4) places as shown GE-Y (4) ”W” Offset (1)

Offset (1)

GE dia. leader pin for guided ejection (2) places as shown

GE dia. leader pin for guided ejection (4) places as shown

GE-Y (4)

”W”

Leader Pin

“B” HALF OF MOLD FOR 108 – 2435 BASES

“B” HALF OF MOLD FOR 88 & 812 MOLD BASES ONLY

PIN DIAMETER (RECOMMENDED)

BASE SIZE

PIN DIAMETER (RECOMMENDED)

BASE SIZE

GE y

GEx

GE y

GEx

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

1518 7.938 2.375 1524 10.875 2.375 1529 13.750 2.375 1616 7.000 2.250 1620 9.000 2.250 1623 10.750 2.250 1626 12.000 2.250 1629 13.750 2.250 1635 16.750 2.250 1724 10.875 3.125 1729 13.750 3.125 1818 8.000 3.250 1820 9.000 3.250 1823 10.750 3.250 1826 12.000 3.250 1829 13.750 3.250 1835 16.750 3.250 1924 10.875 4.000 1929 13.750 4.000 1935 16.750 4.000 2424 10.688 6.125 2429 13.563 6.125 2435 16.563 6.125

3.125 5.125

Center Center

SYSTEM 3

812

3.125 (Q2 ONLY)

1.125 (Q4 ONLY)

108

1012 1016 1020 1112 1114 1118 1123

5.125 7.125 9.125 5.125 6.125 8.125

0.875 0.875 0.875 1.625 1.625 1.625 1.625 1.875 1.875 1.875 1.875 2.375 2.375 2.375 2.375 2.375 2.375

Leader Pin

0.750

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

SYSTEM 1

SYSTEM 2

1.000

10.812

212

5.125 6.625 9.125

1215 1220 1223 1315 1318 1321 1323 1326 1329

10.750

6.625 8.125 9.500

0.875

10.750 12.125 13.750

1.250

Leader Pin

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

SYSTEM 3

Leader Pin SYSTEM 2 Pins installed in the ejector housing permit fast installation. When the ejector housing is removed from the mold base, the complete ejector assembly is removed. Leader Pin

SYSTEM 1 When pins are installed in the support plate, the ejector housing can be removed from the mold without removing ejector plates. This permits easy access to service the ejector system.

Leader Pin

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

Ejector Housing

Ejector Plate

Ejector Retainer Plate

Support Plate

SYSTEM 1

SYSTEM 2

SYSTEM 1

SYSTEM 2

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