Spring secondary ejection mechanism

Abstract

The invention discloses a spring secondary ejection mechanism, comprising: a thimble, a primary ejection structure, a secondary ejection structure and a spring structure, one end of the thimble is connected with a male template, and the other end is connected with the primary ejection structure; the primary ejection The structure is set on the thimble; there is a spring structure between the primary ejection structure and the secondary ejection structure; when working, the secondary ejection structure drives the primary ejection structure to move upward for a predetermined distance through the spring structure to complete the second ejection. A thimble action stroke; then, the primary ejection structure stops moving, and the secondary ejection structure continues to move upward for a predetermined distance, and compresses the spring structure to complete the second thimble action stroke. The spring secondary ejection mechanism of the present invention has high mechanism stability, thereby avoiding maintenance costs and achieving the purpose of safe and efficient production. The spring secondary ejection mechanism of the present invention is used in the mold for secondary ejection, which can reduce the number of thimbles in the product, especially the number of flat thimbles.

Description

technical field [0001] The invention relates to the field of mold processing, in particular to a spring secondary ejection mechanism. Background technique [0002] When a product needs to design a secondary ejection mechanism, the existing technology is to design two sets of ejector plates on the mold, and use a resin shutter or an iron shutter to control the ejection sequence of the two sets of ejector plates, so as to realize Second ejection action. [0003] However, this secondary ejection mechanism composed of resin shutters or iron shutters is very unstable in the mass production process, which increases the number of mold repairs, resulting in greater cost waste and greater defects. [0004] 1. The resin shutter is easy to wear. When the mold temperature gradually increases, the friction force will gradually decrease, which will make the secondary ejection mechanism invalid. When this mechanism fails, the mold needs to be removed from the machine to be replaced or th...

AI Technical Summary

Problems solved by technology

When this mechanism fails, the mold needs to be removed from the machine to be replaced or the resin shutter should be tightened. The cumulative number of mold repairs will increase, resulting in increased labor costs, increased mold parts costs, and reduced product shipments.

[0005] 2. The friction force generated between the components of the iron switch is relatively large, and the parts are easy to break

When the product is mass-produced, it is necessary to make multiple batches of spare parts, which will cause the cost of the mold to rise, and the number of mold repairs will increase the labor cost and reduce the product shipment rate.

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