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Oil cylinder core-loosening injection mould with spring self-locking mechanism

A technology of oil cylinder core pulling and injection mold, which is applied in the field of mold design, can solve the problems of surface defects of molded products, molded inserts are easy to be knocked back, etc., achieve the effect of simple structure, improve injection molding production efficiency, and prevent deformation and damage

Active Publication Date: 2012-07-11
QINGDAO HAIER MOLDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a cylinder core-pulling injection mold with a spring self-locking mechanism, which can solve the problem in the prior art that the molded core is easily knocked back when the cylinder core is pulled, causing surface defects of the molded product

Method used

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  • Oil cylinder core-loosening injection mould with spring self-locking mechanism
  • Oil cylinder core-loosening injection mould with spring self-locking mechanism
  • Oil cylinder core-loosening injection mould with spring self-locking mechanism

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Embodiment Construction

[0032] refer to Figure 2 to Figure 4 As shown, an oil cylinder core-pulling injection mold with a spring self-locking mechanism includes a front template 1 and an oil cylinder core-pulling mechanism 2 on the front template 1. The oil cylinder core-pulling mechanism 2 includes a molding insert 21, an oil cylinder 22 and a rear end connection The oil cylinder joint 23 of the oil cylinder 22, the oil cylinder 22 is fixed on the side of the front template 1, and a spring self-locking mechanism is provided between the forming insert 21 and the oil cylinder joint 23, and the forming insert 21, the oil cylinder joint 23 and the spring self-locking mechanism are located In the core-pulling cavity of the front formwork 1, the spring self-locking mechanism includes a cylinder joint fixing block 24, a core connecting block 25 and a spring locking block 26; There is a rear connecting part 244 with a card slot 243, and the upper surface of the front locking part 242 has a wedge-shaped sur...

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Abstract

The invention provides an oil cylinder core-loosening injection mould with a spring self-locking mechanism, which can solve the problem that the defect on the surface of a formed product is generated because a formed embedded core is easily beaten back when an oil cylinder is subjected to core loosening in the prior art. The cylinder core-loosening injection mould with a spring self-locking mechanism comprises a front template and an oil cylinder core-loosening mechanism, wherein the oil cylinder core-loosening mechanism comprises a formed embedded core, the oil cylinder and an oil cylinder joint; the spring self-locking mechanism is arranged between the formed embedded core and the oil cylinder joint and comprises an oil cylinder joint fixing block, an embedded core connecting block and a spring locking block; the front end of the oil cylinder joint fixing block is connected with the embedded core connecting block; the rear end of the oil cylinder joint fixing block is connected with the front end of the oil cylinder joint; and the front end of the embedded core connecting block is connected with the formed embedded core. By additionally arranging the spring self-locking mechanism, the formed embedded core is locked in the injection moulding process, the defects of trimming, burr and the like on the surface of the product caused by beating back of the formed embedded core as a piston rod of the oil cylinder is forced to backwards move by the large injection moulding force to drive the formed embedded core to retreat is avoided, and the appearance quality of the product is effectively guaranteed.

Description

technical field [0001] The invention relates to the field of mold design, in particular to the improvement of an oil cylinder core-pulling mechanism in an injection mold. Background technique [0002] In the design process of injection molds, for the undercut on the surface of plastic products, if it is impossible to use the slider or inclined top to pull the core due to the large core-pulling stroke or the sequence of the core-pulling action, an oil cylinder is required. The core-pulling mechanism forms the undercut part. [0003] refer to figure 1 As shown, in the prior art, the oil cylinder core-pulling mechanism is mainly composed of the oil cylinder 1, the oil cylinder joint 2 and the forming insert 3, the oil cylinder 1 provides the driving force, and can be fixed on the template through the oil cylinder fixing seat, and the oil cylinder joint 2 connects the oil cylinder 1 and the forming core. Insert core 3, forming insert 3 and cylinder joint 2 are connected throug...

Claims

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Application Information

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IPC IPC(8): B29C45/26B29C45/40
Inventor 张平王涛李洪军
Owner QINGDAO HAIER MOLDS
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