Injection mold for automated production of 64-hole rivet

Abstract

The invention relates to an injection mold for automated production of a 64-hole rivet. The injection mold for automated production of the 64-hole rivet is mainly characterized in that through collaboration of an automatic runner sprue and product cutting and separating structure, the easy-to-cut anti-wiredrawing side sprue design and a product balanced ejection system, automatic cutting and separating of a side sprue injection mold product and a runner sprue can be directly completed through original mold opening and closing actions of the mold, automatic balanced ejection of the 64 product and a runner stub bar can be synchronously completed, and a large amount of subsequent manufacturing and machining cost and time are saved. According to the injection mold for automated production of the 64-hole rivet, the mechanism design is simple, machining is convenient, the needed action space is small, the mold can be manufactured precisely, disassembling and assembling are convenient, the time and the mold space are saved, and plastic products such as the rivet all can be produced through the injection mold.

Description

technical field [0001] The invention relates to an injection mold for automatic production of 64-cavity rivets, which can be used for super-multiple-cavity injection molding molds for small plastic parts such as rivets, keycaps, and screws, and belongs to the technical field of mechanical design and manufacturing. Background technique [0002] In the injection molding process of plastic products, the best way to enter the gate is the side gate, and some plastic products can only be used as side gates due to structural and shape restrictions, but at present, the side gates are mainly cut off manually or post-production Auxiliary clamps are used for cutting, which easily causes secondary defects of the product, wastes manpower and time, and increases the production cost of the product. When the demand for products is large, with the continuous increase of labor costs, the production cost of plastic products is rising, and the competition in the industry is fierce, the traditio...

AI Technical Summary

Problems solved by technology

[0002] In the injection molding process of plastic products, the best way to enter the gate is the side gate, and some plastic products can only be used as side gates due to structural and shape restrictions, but at present, the side gates are mainly cut off manually or post-production Auxiliary clamps are used for cutting, which easily causes secondary defects of the product, wastes manpower and time, and increases the production cost of the product

When the demand for products is large, with the continuous increase of labor costs, the production cost of plastic products is rising, and the competition in the industry is fierce, the traditional side gate injection molding can no longer survive. It is necessary to find a way to solve the problem of multi-cavity side gate injection molding production. automation

[0003] The technical problem to be solved in this case is that a new rivet plastic product requires mass production. After comprehensive evaluation, it needs to be injection molded with 64-cavity side gate molds. There are technical difficulties in how to realize the automatic production of such molds: product features The quality and size are very small, and the quality and size requirements are very high. The dimensional tolerance of the product is required to be within 0-0.05mm, and the product must not have rough edges.

The material of the product is PA66. The injection molding of PA66 material has high water absorption and shrinkage, and the size of the product is not easy to control. Small, only 0.3mm, so injection molding can only be produced with high pressure, and it is easy to cause the product type to run out of burrs, and it is difficult to solve the product without burrs

The gate can only be placed at the specified position, and after removing the gate, there should be no residue on the product surface. However, it is difficult to solve the gate residue problem because PA66 material injection molding is most likely to cause wire drawing problems when the gate is shortened.

The demand for products is huge, so it is necessary to design multi-cavity molds and realize automatic production. It is difficult to solve the filling balance and ejection balance of multi-cavity molds and how to realize automatic production

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