Double-safety die

Abstract

The invention discloses a double-safety die. The double-safety die comprises an upper die, a lower die, a die opening safety part, a die closing safety part, a top plate, side pulling blocks and a pulling rod, the upper end of the pulling rod is arranged on the top plate, and an obliquely-arranged limiting sliding rail is arranged at the lower end of the pulling rod; the side pulling blocks are arranged in the upper die in a sliding mode, a forming cavity is defined by the side pulling blocks, the upper die and the lower die, and the ends, away from the forming cavity, of the side pulling blocks are arranged in the limiting sliding rail in a sliding mode; the top plate is movably arranged on the upper portion of the upper die in the up-down direction, and the side pulling blocks can be forced to slide in and out of the forming cavity by moving the top plate up and down; and the die opening safety part is arranged between the upper die and the lower die, and the die closing safety partis arranged between the top plate and the upper die. All the side pulling blocks can be controlled to achieve core pulling and core feeding at the same time by moving the top plate up and down, the upper die and the lower die are locked through the die opening safety part before core pulling, core feeding is limited through the die closing safety part before die closing, and the double-safety dieis simple in structure, reasonable in layout, low in cost, and convenient to install and control and has small requirement for an air cylinder.

Description

technical field [0001] The application relates to the field of moulds, in particular to a double insurance mould. Background technique [0002] At present, injection molds are widely used in the fields of aviation, electronics, machinery, ships, and automobiles. They mainly include an upper mold and a lower mold. A mold cavity is formed between the upper mold and the lower mold. The sprue connected to the mold cavity is used to inject liquid raw materials into the mold cavity through the sprue, and after it is cooled and formed, a product of a specific shape and size can be formed. [0003] However, for some products with complex shapes and structures, it is often difficult to meet the requirements with traditional upper and lower dies. Such as figure 1 As shown, an oil cover on a yacht engine (the reference number of the oil cover is 100), when it is injection molded, it needs to form a relief hole (the reference number of the relief hole is 101) and a plurality of screws...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, each side core-pulling needs to be driven by a cylinder, and the core-pulling directions of each side core-pulling are different from each other, the assembly between the cylinder and the side core-pulling is difficult, and the control of the cylinder is cumbersome and difficult to operate. Complicated, and the investment cost in the early stage and the maintenance cost in the later stage are relatively high

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