Combined ramp-roof core pulling stripping device for injection mold deep coating dense undercut

Abstract

The invention discloses a combined ramp-roof core pulling stripping device for an injection mold deep coating dense undercut. The combined ramp-roof core pulling stripping device comprises a ramp-roofcore pulling block (1), a follow-up stopping ejection block (2) and a distortion stopping ejection rod (3). The ramp-roof core pulling block adopted by the combined ramp-roof core-pulling stripping device is a block-shaped steel component provided with a profile of the deep coating dense undercut, and the ramp-roof core-pulling block is provided with a ramp-roof rod; the follow-up stopping ejection block is a blocky steel component provided with a profile corresponding to an injection product, and the follow-up stopping ejection block is provided with a follow-up stopping ejection rod; the distortion stopping ejection rod is a cylindrical rod-shaped steel component; and during working, the technical scheme that the follow-up stopping ejection block stops the deep coating dense undercut from undercut following, and the follow-up stopping ejection rod and the distortion stopping ejection rod are combined to powerfully stabilize the follow-up stopping ejection block to eliminate distortion damage of the injection product is carried out, and the deep coating dense undercut is stripped through double-rod combined ramp-roof core pulling, so that injection molding production of the injection product with the deep coating dense undercut achieves the purposes of reducing the working intensity, improving the efficiency, reducing the cost and adapting to automatic production.

Description

technical field [0001] The invention relates to a core-pulling and demoulding device for an injection mold, in particular to an injection mold that is used for core-pulling and demoulding a product with a deep-enclosed close-button structure. device. Background technique [0002] Explanation: Undercut refers to the flange, rib, hook or blind hole structure in which the core-pulling and demoulding direction intersects the opening and closing direction of the mold in injection molded products; [0003] In blind hole undercuts, the narrowest hole diameter is smaller than the hole depth is called deep hole undercut, and the undercut structure composed of multiple densely arranged deep hole undercuts is called dense deep undercut; The covering force between the core-pulling blocks is extremely large, so it is called a deep-packed tight button; [0004] Due to the effect of the covering force, the deep hole undercut with inclined top core pulling and demoulding is used. The deep...

AI Technical Summary

Problems solved by technology

[0006] refer to Figure 5 , an injection molded product with a deep-wrapped button structure, referred to as the product; because the deep-wrapped button is difficult to demould by inclined top core pulling, the prior art adopts the method of insert demoulding, that is, the formed deep-wrapped button The core-pulling block is used as an insert. Before the injection mold is closed, the insert is placed in the mold. After the injection molding is opened, the insert is demoulded together with the injection molded product. After that, the insert is manually removed from the deep Take it out from the closed buckle structure, and then place the inserts in the mold again, and so on. In actual production, multiple sets of inserts will be prepared for turnover; the insert method relies on manual assistance, which has high work intensity and low production efficiency. The comprehensive cost is high, and it is not suitable for the application of large-scale, unattended, and intelligent automatic injection molding production lines; therefore, the existing technology has the problems and deficiencies of high work intensity, low efficiency, high cost, and not suitable for automated production

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