Name: Collapsible Cores Injection Molds
Brand: Injection and Die casting Tooling Experts | Mold World
SKU: 00011
Availability: InStock
Rating: 5 (1 reviews)

Collapsible Cores Injection

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Collapsible Cores Injection Molds

Collapsible Cores can dramatically increase production efficiency(mold cycle time can shorten 20~30%) on many plastic parts which requires internal threads, protrusions ,cut-outs or undercuts ect. It’s a breakthrough compared conventional unscrewing molds no matter for the applicable scope or production efficiency.

We have been developing some special structures over two decades, Collapsible Cores is one of typical unscrewing and retracting undercut solutions utilizing in injection toolings , which has expanded the capabilities of undercut molding more than any other retracting undercut solutions, also have established our reputation of unscrewing and retracting undercut injection mold fabrication.

We design and make collapsible core in-house in accordance with customer’s plastic part specification & production application, which is very economic in cost over Standard Collapsible Cores in marketing, but with high precise and reliable quality.

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Collapsible Cores Injection Molds Additional Features

It is often used to molding and retract undercuts of parts, such as screw-on bottle caps, lipstick containers and a variety of consumer, medical, automotive, and other products. It also simplifies conventional unscrewing structure that eliminates complex gear system, multiple core-pulling actions ect.

Advantage and Added value of Collapsible Cores from Mold World:

High accuracy assurance.

Available as a standard unit.

Shorten cycle time around 20~30%.

Higher significantly number of tooling cavities.

Tooling cost down and injection efficiency up.

Spare parts for critical small components.

More compact structure for easily mold maintenance.

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Collapsible Cores Injection Molds Customer Example

The customer needed a transparent spiral product (PC material) for a kitchen appliance product and desired nearly non parting line mark in-external surface. Traditional core-pulling mechanism cannot achieve undercut retracting of inside and outside area due to the limited dimension and shape. finally recommended collapsible cores structure after deliberately analysis.

Collapsible core structure consist of four collapsible inner sliders driven by core, and two outer sliders motored by hydraulic cylinder that fixed on sliders(see 3D screen pictures below), Mold with two parting surfaces and two-stage ejections, work sequence controlled by latch locks and finally product taken out by robot manipulator.

Kitchen appliance product Mold Parameter:

Strack Standard Components.

Part Size: Ø 120 x 200 mm

Material: Transparent PC

Insert Steel: 1.2767 HRC 50~52

Shrink: 5‰

Manifold: Hot Runners 2 nozzles

Ejector Stroke: 150mm

Total weight of the mold: 3.3T

External Mold Dimensions: W596 x L 946 x H 696 (W 23.46” x L 37.24” x H 27.4”)

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