Insert structure for injection moulding

Abstract

The invention discloses an insert structure for injection moulding. The insert structure comprises an insert body. A bent part is arranged on the insert body. A step part is arranged on the bent part. According to the insert structure for injection moulding, the defects of injection moulding can be avoided, it is unnecessary to modify an injection moulding mould, the defects of injection moulding can be overcome with the low cost, and production competitiveness of enterprises is improved.

Description

Technical field [0001] The invention relates to the technical field of insert injection molding, in particular to an insert structure for injection molding. Background technique [0002] Insert injection molding refers to a molding method in which pre-prepared inserts of dissimilar materials are injected into the mold, and the molten plastic is joined and solidified with the dissimilar materials to form an integrated product. In the process of insert injection molding, the shape of the insert has a great influence on injection molding. [0003] Such as figure 1 with figure 2 As shown, when the insert body 1 has more bends and is embedded on the surface of the product, the intersection of the bent portion 11 of the insert body 1 and the plastic 2 will form an acute-angled area, which makes it difficult to fill the acute-angled area during injection molding. The defect caused by the lack of plastic injection not only affects the appearance of the product, but also during the cold c...

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Problems solved by technology

[0003] like figure 1 and figure 2 As shown, when the insert body 1 has many bends and is embedded on the surface of the product, the intersection of the bent part 11 of the insert body 1 and the plastic 2 will form an acute-angle area, which makes it difficult to fill the acute-angle area during injection molding, thus The lack of plastic defects in injection molding not only affects the appearance of the product, but also causes cracks due to the release of the internal stress of the plastic during the cold cycle test of the product, which reduces the yield of the product and increases the cost

For example, the patent document with application number 201410737149.8 discloses a ring-shaped insert molded product. The parts made of steel plate, the junction of the cylindrical part and the ring part is the bending area. During injection molding, the bending area is likely to cause plastic shortage in the injection molding, thus affecting the appearance and performance of the product

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