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Injection molding method for stylus

A stylus and stylus technology, applied in the direction of coating, etc., can solve the problems of unreasonable ratio of input and output, difficulty in ensuring straightness, difficulty in stylus positioning, etc.

Inactive Publication Date: 2009-07-01
MITAC COMP (SHUN DE) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most PDA manufacturers generally use a set of main injection molds to inject the touch pen at one time during the injection molding process of the touch pen. Although the injection molding process of this method is simple, the injected touch pen is easy. Bending occurs, making it difficult to guarantee its straightness. At the same time, the cost of making this set of molds is very high, especially in occasions where the product output is not large, and there may even be an unreasonable ratio of input to output. In addition, during the injection molding process The positioning of the stylus is difficult to guarantee

Method used

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  • Injection molding method for stylus
  • Injection molding method for stylus
  • Injection molding method for stylus

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Embodiment Construction

[0020] see Figure 1 to Figure 3 As shown, it is a schematic diagram of the injection sequence of a manufacturing method of a stylus for a handheld computer disclosed by the present invention. During the process of injecting the stylus, the inner pen body is sequentially placed into the corresponding main injection mold. Create the fixing tool described above to clamp and fix the stylus, and shoot out the contact end 10, the middle section 20, and the buckle end 30 of the stylus in sequence, so that the plastic can completely cover the inner pen body to form an insulating outer pen Each part of the injection will cover the remaining filling point of the last time, so that only one filling hole is left when the injection molding is finally completed, and the finished product of the stylus is the finished product after the filling mouth is rested and deburred.

[0021] see Figure 4 , 4A , 4B, and 4C are schematic diagrams of the structure of the main fixing tool for the injec...

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Abstract

The present invention mainly discloses an injection molding method for a touch pen. In order to ensure the injection quality of the touch pen, the touch pen can be injection molded through three sets of molds, and the inner pen body is sequentially placed into the corresponding main injection mold. According to the order of the contact end, middle section, and buckle end, they are injected three times respectively; in view of this injection molding feature, the creator designed the main fixing tool and auxiliary fixing tool for the stylus to improve the stability of the stylus. Injection quality.

Description

technical field [0001] The present invention mainly relates to the field of injection molding of touch pens used in electronic products, in particular to an injection molding method of touch pens (touch pen) used in electronic products and a fixing tool used in the injection molding process. Background of the invention [0002] Most PDA manufacturers generally use a set of main injection molds to inject the touch pen at one time during the injection molding process of the touch pen. Although the injection molding process of this method is simple, the injected touch pen is easy. Bending occurs, making it difficult to guarantee its straightness. At the same time, the cost of making this set of molds is very high, especially in occasions where the product output is not large, and there may even be an unreasonable ratio of input to output. In addition, during the injection molding process The positioning of the stylus is difficult to guarantee. [0003] Therefore, it is necessa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/00
Inventor 周波
Owner MITAC COMP (SHUN DE) LTD
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