Cooling fixture

Each profile model needs its die, mandrel, calibrators and cooling fixtures whose cost is charged on each run. Consequently, the costs of the profiles depend on ... 

Cooling fixture (shrink fixture) n. A structure of wood or metal shaped to receive and restrain a part after its removal from a mold, so as to prevent distortion of the part while it is cooling. 

Figure 11-51. The goal should be to avoid undercuts wherever possible, especially in small holes and on projections. With rigid plastics, undercuts usually require complex, more expensive molds and particularly molding operations. However, with flexible types of plastics stripping the mold will permit ease of removal from the mold. This action can be used with rigid plastics when it is practical to remove a part while the plastic is still soft, just prior to when the part should be removed. When certain parts that we removed at an earlier stage, cooling fixtures may be applicable.

Warpage allowance and direction should be shown on the design drawing so that cooling fixtures, type plastic and molding techniques may be determined to achieve optimum performance in the molded part. 

Integrated Postmolding Processes 1.4.2.5.1 Postcooling with a Cooling Fixture... 

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