Mold Components

CO LL APS IB LE COR ES RT-Series Collapsible Cores

COLLAPSIBLE CORE, ECS Table of Contents

Economically produce complex plastic parts The Collapsible Core is a major breakthrough for molding plastic parts requiring internal threads, undercuts, protrusions or cut-outs. The patented design incorporates only three moving parts, which utilize conventional mold movements. The Collapsible Core’s automatic operation makes it possible for you to produce parts that, previously, had been considered impossible to mold. Parts with internal protrusions, dimples, interrupted threads and cut-outs can now be economically produced on a high- or low- volume basis. For conventional threaded parts, the Collapsible Core could cut your cycle time up to 30% when compared with unscrewing or other complex actuating mechanisms. Full technical details, including basic stripper plate mold construction, core grinding instructions, and core and mold machining dimensions are included in the Collapsible Core and Collapsible Mini- Core Design & Assembly Guide – contact DME for a copy.

RT-Series Collapsible Cores Standard RT-Series........................................................ 91 Mini RT-Series .............................................................. 92

U.S. Patent Nos. 3,247,548; 3,660,001 Foreign Patents Issued

ROOT DIAMETER OF THREAD

C

A

S-Series Collapsible Cores & Accessories S-Series Collapsible Cores........................................ 93-9 6

B

UNCOLLAPSED

COLLAPSED

MOLDED CAP CAVITY INSERT

H

SHUT-OFF

L

Standard Expandable Cavity Systems Cost Savings & FAQ....................................................... 97 EX-CAV™ System & Mounting Kits ................................. 98 Technical Information.................................................... 99

COLLAPSIBLE CORE COLLAPSING SEGMENTS STRIPPER INSERT

O.A.L.

POSITIVE COLLAPSE SLEEVE (INCLUDED)

COOLING HOLE

CENTER PIN

Custom Expandable Cavity Systems Features and Benefits.................................................. 100 Components................................................................ 101 Typical Applications.................................................... 102 Cavity and Striker Insert Design................................... 103 Operating Sequence ................................................... 104 Application Guidelines ................................................ 105 Quote Request Form .................................................... 106 Expandable Cavity Application Data Plastic Part Design...................................................... 107 Typical Mold Layouts................................................... 108

EJECTOR PLATE ASSEMBLY

CENTER PIN INSTALLED IN CLAMP PLATE

A MAX O.D. O.A.L. OVERALL LENGTH OF COLLAPSIBLE CORE (ONLY) INCH MM INCH MM INCH MM INCH MM INCH MM *INCH *MM INCH MM OF THREAD OR CONFIG B MIN I.D. OF THREAD OR CONFIG H CENTER PIN DIAMETER (AT TOP OF CORE) L MAX WORKING LENGTH (INCL MOLD SHUT-OFF) C COLLAPSE PER SIDE AT TOP OF CORE**

ITEM NUMBER

CC125PC .720 CC150PC .850 CC175PC .970

18.29 21.59 24.64

.620 .700 .760 .910 .910

15.75 17.78 19.30 23.11 23.11

.490 .580 .640 .785 .785 .885 .885

12.45

.800

20.32

.027 .037 .043 .043 .043 .055 .055 .068 .068 .090 .115 .140 .150 .165

.69 .94

.032 .042 .048 .048 .048 .064 .064 .083 .083 .103 .125 .148 .160 .170

.81

5.605 142.37 6.615 168.02 6.615 168.02 7.315 185.80 5.440 138.17 7.315 185.80 5.440 138.17 7.315 185.80 6.065 154.05 7.815 198.50 9.625 244.47

14.73 1.000 25.40 16.26 1.000 25.40 19.93 1.150 29.21 19.93 1.150 29.21 22.47 1.150 29.21 22.47 1.150 29.21

1.07 1.21 1.21 1.21 1.62 1.62 2.10 2.10 2.61 3.17

1.09 1.09 1.09 1.39 1.39 1.72 1.72 2.28 2.92 3.55 3.81 4.19

CC200PC 1.270 32.25 †CC250PC 1.270 32.25

CC202PC 1.390 35.30 1.010 25.65 †CC252PC 1.390 35.30 1.010 25.65

CC302PC 1.740 44.19 1.270 32.25 1.105 28.06 1.400 35.56 †CC352PC 1.740 44.19 1.270 32.25 1.105 28.06 1.400 35.56 CC402PC 2.182 55.42 1.593 40.46 1.388 35.25 1.700 43.18 CC502PC 2.800 71.12 2.060 52.32 1.750 44.45 1.900 48.26 CC602PC 3.535 89.78 2.610 66.29 2.175 55.24 2.400 60.96 CC652PC 3.800 96.52 2.890 73.41 2.450 62.23 2.400 60.96 CC702PC 4.225 107.31 3.350 85.09 2.875 73.02 2.400 60.96

3.75 11.250 285.75 4.06 11.250 285.75 4.32 11.250 285.75

NOTE: Special Collapsible Cores with molding lengths, special diameters or collapse other than shown in table above will be quoted on request. † Shorter overall length Collapsible Cores for any application, and particularly where mold shut height is limited.

* Cores having slightly greater collapse, as shown above, are usually available from stock – contact DME.

** To determine maximum dimension of moldable undercut, reduce the amount of collapse per side shown in the table above by .020 per inch of part height requiring collapse.

90

91

U.S. 800-626-6653 ■ Canada 800-387-6600 ■ dme@milacron.com ■ www.dme.net ■ store.dme.net

U.S. 800-626-6653 ■ Canada 800-387-6600 ■ www.dme.net ■ store.dme.net

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