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Mold Action

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Mold Action

Product catalog summary

UniLifter® Undercut Release System

Components: Includes Core Blade, U-Coupling, and T-Gib for releasing undercuts in molded parts.
Specifications: The angle is set by the mold builder, with UniLifter travel calculated as ejector plate travel multiplied by the tangent of the angle.
Application Guidelines: Recommended angles are 5-10˚ with guided ejection. Clearance should be .001"-.0015". Core insert material should differ by at least 10 HRC from standard Core Blades.

FlexiCore® Undercut Release System

Components: Comprises FlexiCore, Bronze Guide, Heel Plate, and Flat Head Cap Screw.
Specifications: Uses improved materials for longer lifespan, with a maximum operating temperature of 250°F (125°C).
Application Guidelines: FlexiCore diameter must be within the guide before ejection. Only low-temperature surface treatments are allowed.

Collapsible Cores & MiniCores®

Components: Includes Collapsible Core, Positive Collapse Sleeve, and Center Pin.
Operation: Core collapses independently when the center pin is withdrawn.
Application Guidelines: Standard cores have a maximum outer diameter of .720” to 4.225”.

Overview: This document outlines specifications and guidelines for Collapsible Cores and MiniCores in molding applications, covering design considerations, operational guidelines, and technical specifications.

Specifications:

MiniCores have a maximum outer diameter of 0.645” to 0.965” and offer up to 70% full thread or undercut geometry.
Standard Collapsible Cores have a maximum outer diameter of 0.511” to 3.937” and offer complete 360° thread or undercut geometry.
Custom cores are available for non-standard sizes with options for machined, EDM’d, or ground details.

Design Guidelines:

The first break should occur at the main parting line, with return pins under the stripper plate.
Good venting is essential, preferably to the outside of the mold at the parting line.
Undercuts should be drafted a minimum of 5°, and sharp interior corners should be avoided to prevent stress concentration.

Operational Guidelines:

Cores can operate without lubrication, but additional treatments for wear reduction or corrosion resistance are beneficial.
The Positive Collapse Sleeve ensures safety and reliability when the Collapsible Core fails to collapse independently.

Technical Specifications:

Tables provide detailed measurements for various core models, including maximum outer diameter, minimum inner diameter, and collapse per side at the top of the core.
Expandable Cavity Systems are available for molding undercuts such as threads and protrusions, eliminating the need for complex side action mechanisms.

Application Guidelines:

Collapsible Cores can be used in configurations other than the typical ejector/stripper plate design, such as with hydraulic cylinders and slide assemblies.
Contact Engineering for application reviews and quotations for custom solutions.

Specifications:
1. Stroke: 50mm (2 inches)
2. Pressure Rating: Up to 3200 psi
3. Temperature: Maximum 220° F (100° C)
4. Inclusions: Two NPT couplings and a locating key

Components:
- SK-CYL-50: 50 mm Block Cylinder
- SK-PPC-20: M20-1.5mm Pin Plate Coupling

Dimensions:
- Various dimensions provided for components such as pin plate couplings and cylinders, with specific measurements in both metric and imperial units.

Center Support Systems:
Center supports enhance engagement between the center section and movable mold halves, made from AISI 4140 material, available in different styles:
1. Style 1: Top Reach Support
2. Style 2: Bottom Reach Support
3. Style 3: Side Support (Top)
4. Style 4: Side Support (Bottom)
5. Style 5: Way Support

Ordering Instructions:
To obtain a quote, select the style of center support system based on the press layout and preference, determine the necessary variables, and send the information to [email protected] for pricing and turnaround details.

Catalog excerpts

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