What are the main requirements for precision plastic molds

Plastic molds are primarily used to shape plastic products, and their manufacturing cycle is shorter and their cost is lower, making them widely used in the mold industry. As an emerging skill product, what are the primary requirements for precision plastic molds?

The precision of plastic molds refers to the precise size, shape, and orientation of the parts, without any deviation. The precision of plastic molds is closely related to component manufacturing, equipment level, and measurement accuracy. During the processing of parts, it is necessary to align, proofread, adjust, measure, inspect, and test assemble according to regulations, otherwise the machining accuracy of the parts may not meet the requirements.

In the processing of plastic molds, strict inspection standards must be implemented for each surface to ensure that its surface roughness, scale errors, orientation errors, shape and orientation accuracy are within the control range. In addition, during the installation and repair of the mold, it is necessary to strictly ensure the cooperation scale of each component, especially for the cooperation between the formed parts and the mold base, and carefully adjust them to ensure that they can fit well.

The main requirements for fine plastic molds are as follows:

(1) High requirements for raw materials. Because plastic is a thermosetting plastic with a high coefficient of linear expansion and high internal stress, some technical measures should be taken to avoid this problem when manufacturing precision injection molding machinery.

(2) The structure is complex. The structure of plastic parts is relatively complex, especially in areas with complex shapes and thin walls that are prone to brittleness and warping. It is necessary to plan certain strengthening ribs to avoid stress concentration. At the same time, in order to ensure the quality and service life of plastic parts, it is also necessary to ensure that the scale accuracy of each part of the plastic part is high and the surface roughness is appropriate. The structure of fine plastic parts should not only be considered during mold planning, but more importantly, strict control should be exercised during the mold making process. Therefore, the confirmation of plastic part forming process is crucial for improving the yield.

(3) High precision requirements for parts; The accuracy requirements of molds are primarily reflected in the scale accuracy, and the mold must strictly adhere to processing standards and standards during the processing process.

(4) The production cost of the parts is relatively low. Due to the unique characteristics of the molding process and molds, the price of precision molds is much higher than traditional molds, so the production cost of precision molds is very high and can only be used for a small amount of mold production.

Fine molds refer to molds that require very strict raw materials during the manufacturing process, have a short manufacturing cycle, and are finely processed. The manufacturing process of this type of mold usually involves many processes and requires the use of highly sophisticated machines to complete. After the completion of this mold manufacturing, not only is the appearance very exquisite and beautiful, but the quality requirements for internal parts are also very precise.