Plastic parts processing tips: parting surface determination skills revealed!

In the processing of plastic parts, determining the parting surface is a crucial step. The choice of parting surface directly affects the structure of the mold, manufacturing costs and product molding quality. Therefore, in the development of plastic parts processing technology, the determination of the parting surface must be given sufficient attention and consideration.

Before discussing how to determine the parting surface, first need to understand what is the parting surface. Parting surface, simply put, is the mold closure of two or more mold parts in contact with the surface. Its main function is to enable the mold to open and close smoothly after the plastic part is molded, so that the plastic part can be removed from the mold.

How should the parting surface be selected? It mainly depends on the following factors:

1. The shape and structure of the plastic part: The shape and structure of the plastic part is the primary consideration for selecting the parting surface. Need to be based on the shape of the plastic part, try to choose in the case of not affecting the appearance of the plastic part and the use of performance, so that the mold structure is the simplest parting surface. For example, for molded parts with side holes or side recesses, we usually choose the side of the side holes or side recesses as the parting surface.

2. Mold structure and cost: The selection of the parting surface will also affect the structure and cost of the mold. Generally speaking, it is desirable to select a parting surface that makes the mold structure simple and low cost. For example, avoid selecting parting surfaces that require complex sliding or rotating mechanisms. At the same time, it is also necessary to take into account the strength and rigidity of the mold to ensure that the mold will not be cracked or deformed during use due to the choice of parting surface.

3. Shrinkage of plastic: Plastic shrinkage occurs during the cooling process, and the shrinkage of different plastics varies, which also affects the selection of parting surfaces. Need to take into account the shrinkage rate of plastic, choose the appropriate parting surface to ensure the dimensional accuracy and shape stability of the molded part.

4. Mold release angle: In order to ensure that the plastic parts can be smoothly removed from the mold, you need to consider the mold release angle of the plastic parts. When selecting the parting surface, it should be ensured that the mold release angle meets the design requirements as far as possible.

5. Other factors: In addition to the above mentioned factors, it is also necessary to consider other factors such as the assembly of plastic parts, mold life.

Determine the parting surface is a comprehensive consideration of a variety of factors in the process, need to accumulate experience in the actual operation, flexible application. Only in this way can we determine the most suitable parting surface, so as to improve the molding quality and efficiency of plastic parts and reduce the cost of mold manufacturing.