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Extraction device and method for extracting resin molded article

A technology of resin forming and taking out device, applied in the field of preventing taking out, can solve problems such as uneven temperature change, bad influence on product quality, etc., and achieve the effect of good adhesion and damage prevention

Inactive Publication Date: 2014-06-25
TOYO MACH & METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Resin molded products such as light guide plates are usually molded with the mold of an injection molding machine. However, when such resin molded products are released from the mold, warpage or uneven temperature changes may occur, which may damage the quality of the product. Quality has a bad effect, so it is desirable to prevent such problems

Method used

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  • Extraction device and method for extracting resin molded article
  • Extraction device and method for extracting resin molded article
  • Extraction device and method for extracting resin molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 and figure 2 The take-out device 1 of Example 1 shown is used as a resin molded product that is attached to the mold of the injection molding machine and has a flat plate shape at 60°C to 70°C and has a relatively thin wall thickness (about 0.1mm to 0.5mm). Used when the light guide plate 2 is taken out (released from the mold).

[0038] The take-out device 1 includes: an adsorber 3 that adsorbs the entire surface of one side of the flat light guide plate 2; a vacuum pump 4 as a negative pressure generating unit that generates suction when the absorber 3 adsorbs the light guide plate 2; The suction block member 5 holding the suction body 3 ; the base body 6 holding the suction block member 5 ; and the arm 7 .

[0039] On one surface, the absorbing body 3 has an absorbing surface 3a capable of abutting against the entire one surface of the light guide plate 2 to absorb it, and the edge of the other surface 3b side on the opposite side is integrally fixed to ...

Embodiment 2

[0047] Figure 5 and Figure 6 The take-out device 51 of Example 2 shown is used as a resin molded product that is attached to the mold of the injection molding machine and has a flat plate shape at 60°C to 70°C and has a relatively thin wall thickness (about 0.1mm to 0.5mm). It is used when the light guide plate 52 is taken out (released from the mold).

[0048] The take-out device 51 is equipped with: an elastic absorber 53 that absorbs one side of the flat light guide plate 52; a vacuum pump 54 that generates suction as a negative pressure generating unit when utilizing the absorber 53 to absorb the light guide plate 52; Body 53 holds base 56; arm 57. It should be noted that the material of the adsorbent 53 is silicone rubber, and the surface thereof is coated with fluorine in a non-vacuum state to form fine unevenness (so-called rough state).

[0049] In the adsorption body 53, one surface has an adsorption surface 53a that is in contact with one side of the light guide...

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PUM

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Abstract

Provided is an extraction device that can prevent a resin molded article such as a light guide plate from deforming when extracting the resin molded article by means of suctioning. In the extraction device (51), which suctions the light guide plate (52), which is the resin molded article molded in a die, by means of a suctioning body (53) to extract the light guide plate (52) from the die, the suctioning body (53) is provided with a high-density pore disposed region (H) at which a plurality of pores (59a) are disposed at a high density, and a low-density pore disposed region (L) at which a plurality of pores (59b) are disposed at a low density having a coarser density than the plurality of pores (59a) of the high-density pore disposed region (H).

Description

technical field [0001] The present invention relates to a device capable of absorbing and taking out a flat resin molded product used in a liquid crystal display panel, etc., and a method for taking out a resin molded product. When the light guide plate of the resin molded product is released from the mold, it is possible to prevent the deformation of the light guide plate taken out, and it is suitable for taking out the light guide plate and the taking out method. Background technique [0002] In recent years, displays such as liquid crystals employ light guide plates in order to uniformly surface-emit light. In such a light guide plate, a condensing pattern for reflecting light is provided on one surface of the plate, and a diffusion pattern is provided on the other surface for concentrating light on the front side to increase brightness. Resin molded products such as light guide plates are usually molded by the mold of an injection molding machine. However, when such res...

Claims

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Application Information

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IPC IPC(8): B29C45/42B29C33/44
CPCB29C45/4225
Inventor 加藤纯二
Owner TOYO MACH & METAL CO LTD
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