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Shoot out compression forming method of small-sized light conducting plate, shoot out compression forming mold and small-sized light conducting plate

A compression molding, light guide plate technology, applied in optics, light guides, household appliances, etc., to achieve the effect of shortening the molding cycle time

Inactive Publication Date: 2010-12-29
MEIKI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, especially in the case of a small light guide plate, there is no combination of various cooling medium flow paths from the mold structure to cool various parts such as runners.

Method used

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  • Shoot out compression forming method of small-sized light conducting plate, shoot out compression forming mold and small-sized light conducting plate
  • Shoot out compression forming method of small-sized light conducting plate, shoot out compression forming mold and small-sized light conducting plate
  • Shoot out compression forming method of small-sized light conducting plate, shoot out compression forming mold and small-sized light conducting plate

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Embodiment Construction

[0050] Refer to Figure 1 to Figure 14 The injection compression molding method of the small light guide plate of the present invention will be described. FIG. 1 is a cross-sectional view of an injection compression molding mold used in the injection compression molding method of a small light guide plate according to this embodiment, showing a state where mold clamping force has not yet acted. figure 2 It is a cross-sectional view of the injection compression molding mold used in the injection compression molding method of the small-sized light guide plate of this embodiment, and is a diagram showing a state where mold clamping force acts. 3 is a front view showing a movable mold of the injection compression molding mold used in the injection compression molding method of the small light guide plate according to the present embodiment. Figure 4 It is a front view of the fixed mold of the injection compression molding mold used for the injection compression molding method of...

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Abstract

The aim of the invention is to provides a injection compressure molding method of a minitype light guide plate, when the minitype light guide plate is formed by injecting compressure molding, the molding circle time of the minitype light guide plate is shorten and the minitype light guide plate having excellent optical performance is formed. In processing diagonal 1 inch-5 inches, when the injection compressure molding of the thickness of the thick below 0.25mm-1.0mm of the minitype light guide plate is formed, at least one of the molding face of the the sprue bush of the fixed mold or the pouring head part of the moving mold forms the minitype light guide plate cooled by different cooling medium respectively except the chamber molding face of the fixed mold and the chamber molding face of the moving mold.

Description

technical field [0001] The present invention relates to an injection compression molding method for a small light guide plate, an injection compression molding mold, and a small light guide plate, and particularly to an injection compression molding method, an injection compression molding mold, and a small light guide plate for a light guide plate for a mobile phone. Background technique [0002] Light guide plates used in display devices such as liquid crystal, plasma, and organic EL are generally produced by injection molding or injection compression molding, which is one of these fields. When molding a light guide plate by injection compression molding, it is desirable to shorten the molding cycle time if production efficiency is to be improved. The forming cycle time of the light guide plate depends on its size and plate thickness. In the 18-inch light guide plate of Patent Document 1 with a wall thickness of 12 mm, a cycle time of 160 seconds or more is required. On ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/57B29C45/73B29C45/76B29C45/78B29C45/26G02B6/00B29K69/00B29L11/00
CPCB29L2011/0075B29C45/561
Inventor 蛯名利幸西田一彦
Owner MEIKI