Mold for injection molding of parts with internal threads

A technology of internal thread and parts, which is applied in the field of injection molds with internal thread parts, can solve the problems of thread shape of strained products, thread core rotation speed, mold movement rhythm inconsistency, etc., and achieve the effect of simple structure and improved production efficiency

Inactive Publication Date: 2014-01-15
FOSHAN NANHAI HUADA MOLDS & PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, it often occurs that the rotation speed of the thread core is inconsistent with the rhythm of the mold movement, resulting in the problem of straining the thread shape of the product

Method used

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  • Mold for injection molding of parts with internal threads
  • Mold for injection molding of parts with internal threads
  • Mold for injection molding of parts with internal threads

Examples

Experimental program
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Embodiment Construction

[0019] refer to Figure 1 to Figure 4 , a mold for injection molding parts with internal threads provided by the present invention, from top to bottom sequentially includes a panel 1, a nozzle plate 2, a front mold needle plate 3, a fixed platen 4, a push plate 5, a movable platen 6, a surface Needle plate 7, bottom needle plate 8 and bottom plate 9, there is a space I10 between the nozzle plate 2 and the fixed plate 4 for the front mold needle plate 3 to move up and down, and the two sides of the front mold needle plate 3 are provided with square iron The nozzle plate 2 and the fixed platen 4 are separated by square iron to form a space I10. The upper part of the movable platen 6 passes through the push plate 5 and cooperates with the fixed platen 4 to form a closed cavity 11 corresponding to the shape of the product. The closed cavity 11 is provided with a threaded mandrel 12, the upper part of the threaded mandrel 12 passes through the fixed template 4 and is connected with...

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Abstract

The invention discloses a mold for injection molding of parts with internal threads. The mold sequentially comprises a panel, a water gap plate, a front mold needle plate, a fixed mold plate, a push plate, a movable mold plate, a face needle plate, a bottom needle plate and a bottom plate from top to bottom, wherein a space I for up-and-down movement of the front mold needle plate is left between the water gap plate and the fixed mold plate; the upper part of the movable mold plate penetrates through the push plate, and is fitted with the fixed mold plate to form a closed cavity; a threaded core bar is arranged in the closed cavity; the upper part of the threaded core bar penetrates through the fixed mold plate, and is connected with the front mold needle plate; a diagonal pitch is arranged at the upper part of the threaded core bar; the front mold needle plate is provided with an inclined toothed sleeve fitted with the diagonal pitch; a pouring port is formed in the panel; the bottom of the pouring port is communicated into the closed cavity through a sprue sleeve. The mold adopts the front mold needle plate structure to drive the threaded core bar for demolding, has a simple and skillful structure, and greatly improves the productivity.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to a mold for injection molding parts with internal threads. Background technique [0002] In the existing injection mold industry, the internal thread structure of the product is generally formed by a thread-removing mold. The specific working process of the thread-removing mold is as follows: when the mold is opened, the thread core is rotated for thread-removing under the transmission of the gear, and The threaded core is fixed in the direction of product release, and the template is ejected by the thimble of the mold while the threaded core rotates, thereby completing the production of products with internal threads. However, in the actual production process, it often occurs that the rotation speed of the thread core is inconsistent with the rhythm of the mold movement, resulting in the problem of straining the thread shape of the product. Contents of the invention [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/26B29C45/40
CPCB29C45/33B29C45/4005
Inventor 不公告发明人
Owner FOSHAN NANHAI HUADA MOLDS & PLASTICS
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