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Internal thread forming injection mold

A technology of injection mold and internal thread, applied in the field of injection mold structure design, can solve the problems of high cost and complex structure of injection mold, and achieve the effect of low cost, fast demoulding process, simple and reasonable structure

Pending Publication Date: 2022-01-04
WENZHOU LONGHUA DAILY ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing plastic products with internally threaded hole structure are often core-pulled through the internally threaded hole part through the rotary core-pulling mechanism when the material is stripped after the injection molding is completed, and the injection mold structure of the rotary core-pulling mechanism is quite complicated and expensive. question

Method used

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  • Internal thread forming injection mold
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  • Internal thread forming injection mold

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Experimental program
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Embodiment Construction

[0022] The specific structure of the internal thread forming injection mold in the present invention is described below in conjunction with the accompanying drawings:

[0023] In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" etc. indicate orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

[0024] like figure 1 , image 3 , Figure 4 and Figure 7 to Figure 9 As shown, a kind of internal thread forming injection mold in this embodiment includes an upper die set 1 and a lower die ...

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Abstract

The invention discloses an internal thread forming injection mold which comprises an upper mold set and a lower mold set. A thread forming part comprises a plurality of forming blocks which are spliced in the circumferential direction and a big-end-down wedge-shaped core body, a big-end-down wedge-shaped through hole is formed among the forming blocks, the wedge-shaped core body is arranged in the wedge-shaped through hole in a penetrating mode, and the forming blocks are driven to synchronously expand and contract in the radial direction when the wedge-shaped core body moves up and down. The outer side faces of all the forming blocks are spliced to form a circumferential face, and forming threads are arranged on the circumferential face. The lower mold set comprises a lower mold block and a lower mold backup plate, and the lower mold backup plate is arranged below the lower mold block and can move up and down relative to the lower mold block. A vertically-through mounting through hole is formed in the lower mold block, the lower portion of the thread forming part is located in the mounting through hole, and the lower end of the wedge-shaped core body is fixedly connected with the lower mold backup plate. The structure of the internal thread forming injection mold is optimized in design, the structure is simplified and reasonable, the number of parts is small, the manufacturing cost is low, core pulling of the internal thread part is facilitated, and good practicability is achieved.

Description

technical field [0001] The invention relates to an injection mold for internal thread forming, which belongs to the technical field of injection mold structure design. Background technique [0002] Injection molding machine is the main molding equipment for making thermoplastics or thermosetting materials into various shapes of plastic products with plastic molding molds. The injection mold is the core component of the injection molding machine. A cavity that matches the shape of the plastic product. Existing plastic products with internally threaded hole structure are often core-pulled through the internally threaded hole part through the rotary core-pulling mechanism when the material is stripped after the injection molding is completed, and the injection mold structure of the rotary core-pulling mechanism is quite complicated and expensive. question. Contents of the invention [0003] Aiming at the problems pointed out in the background technology, the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/33B29C45/26B29L1/00
CPCB29C45/33B29C45/332B29C45/26B29L2001/00
Inventor 赵百谦周明幸
Owner WENZHOU LONGHUA DAILY ELECTRONICS
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