Injection molding side actions are inserts (sometimes referred to as “features”) added to the mold in order to create undercut geometry. Undercut features are perpendicular to the main parting line and cannot be produced with a straight-pull mold, or in other words, by pulling apart the two halves of the mold and ejecting the part. When side actions are added to the mold, they allow material to flow around them to form the undercut feature. The side actions must then be removed manually or automatically to allow part ejection.Â

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Side actions are beneficial because they increase the options for what part geometries your part can have. Learn which type is best for your project.

Lifters create and release internal undercut features. Similar to slides, lifters move into place via a cam as the tool closes and move away as the tool opens.

Side actions are beneficial because they increase the options for what part geometries your part can have. However, side actions can dramatically increase molding production costs, so it is helpful to consider whether you need them or whether you can avoid them by designing slot features.

Hand-loaded cores are substitutes for slides or lifters, and are manually placed features which are molded around and then manually removed from the part. These are replaced each cycle.

When side actions are unavoidable, it is important to understand which type of side action your manufacturer recommends for your part, as each has different cost impacts on your tooling costs. The following table describes the different types and their use cases.

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Hand loads are used for prototype and low-volume tooling as a cheaper alternative to automated slides and lifters. Hand loads can be adaptable to different part configurations in one tool.

Slides create and release external undercut features by collapsing into place via a cam as the tool closes. It then pulls away as the tool opens.

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We offer a dedicated training session for all new Zephyr Bros. machine purchases, available either onsite at PPM or online.

Machine Type: Manual Power Supply: Single Phase Product Capability: Medium (e.g. Phone Case) Weight (KG): 52 Dimensions (MM): 800L x 300W x 1280H Heating Power (W): 1220 Voltage (V): 240 AC Amperage (A): 6 Cable: IEC Mount (Supplied To Suit Country Of Use) Regulatory Compliance Mark (RCM): Yes

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It should also be noted that because side actions do not follow the general tool direction, undercut features require draft angles specific to the action’s movement. For more design strategies, download our Injection Molding Design Guide.

The two side actions, shown in dark grey, intersect the mold perpendicular to the parting line. Image Credit: Shutterstock.com/Solcan Design

Features:• Spring-loaded, height-adjustable barrel for seamless adjustments and precision crafting• Rack and pinion mechanism ensures optimised pressure for powerful leverage and professional results• Gears seamlessly convert rotation into linear motion for efficient operation• Boltable design guarantees a stable foundation for reliable injection moulding• Easy-to-mount, relocatable electrical box provides flexible setup• Premium quality stainless steel hopper designed to withstand the test of time

Collapsible cores are mechanisms that release a circular undercut feature in a method similar to a lifter. These allow the actions to collapse inward, providing clearance for part ejection.

Our business has had this machine for three months and in this short time we've been able to garner community support for the program and deliver recycled plastic products to our customers. We've seen huge growth in our recycling program due to this machine.

It has also been a fantastic tool for education purposes due to it's simple nature - very easy for kids to visualise the recycling process at schools/events!

You can also read our Ultimate Guide to Injection Molding to read about injection molding technology or view our plastic injection molding services page.

An unscrewing action is an automated motor or manual hand screwing that creates screw or threaded features. These actions prevent damage to the threads with careful unwinding between cycles.

From the basics of plastic through to safety and fumes, get started on your recycling journey with online and downloadable resources.

Australian made: We build high quality machines fit for purpose and compliant with Australian Safety Standards. Knowledge and support: Our machines are built by people who use them! And, if you do happen to need additional assistance, we offer post-purchase support - a pretty important factor when you're investing in equipment.

The product includes all appropriate power switches and warning labels. Please note: This machine is fitted with safety features, however it's important to understand that these machines are dangerous, and proper safety measures must be implemented.

Here you'll find everything you need to get started, from risk assessment templates to comprehensive troubleshooting guides.