An Introduction of Injection Plastic Mold Tool Sets


Toolsets for Injection plastic mold provide a modular approach to tool design and manufacture. The actual mold cavity remains a custom piece, but the rest of the tool is built from already manufactured mold components. This approach is made possible through the use of master mold frames.

Toolsets for Injection plastic mold provide a modular approach to tool design and manufacture. The actual mold cavity remains a custom piece, but the rest of the tool is built from already manufactured mold components. This approach is made possible through the use of master mold frames.

A master mold frame is a design in which runners and gates are machined into standardized inserts that fit within a standard frame. Other components incorporated into the standardized mold frames include leader pins, bushings, sprue bushing, support pillars, side actions, and the ejector system. These do not need re-machined for each new toolset. At the heart of the frame, there’s a toolset that contains the actual mold cavity. This toolset is the only piece of the mold required to be designed and machined to produce a particular part.

Advantages of Injection Mold Toolsets
There are three main reasons for taking the toolset approach:

Cost: There is less design work and less machining involved with toolsets. Additionally, less material is used. All of this equates to a lower tooling cost.

Lead-time: Using standard components can reduce the time needed to manufacture the tool and usually cuts the time required for tooling fabrication.

Flexibility: Master mold frames can have advanced functions — such as side actions with adjustable travel — built-in and ready to use
Downsides of Using Tool Sets
With such clear advantages, it’s reasonable to ask why anyone would choose dedicated injection mold tooling. Two reasons are:

Mold complexity: Sophisticated heating, cooling, and runner systems will need dedicated pieces that toolsets might not create.

Maximizing throughput and minimizing cost: Achieving the shortest possible cycle time involves optimizing every aspect of the mold tool.

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