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Grasping device

A technology for optical sheets and components, applied in the directions of transportation and packaging, instruments, manufacturing tools, etc., can solve the problem of not finding the holding pressure, and achieve the effects of preventing deformation of protrusions, preventing adhesion, and preventing damage

Inactive Publication Date: 2011-01-19
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the technology disclosed in Japanese Patent Application Laid-Open No. 2003-20135, the gripping pressure that can grip the optical sheet without damaging it is not found.
[0008] In addition, Japanese Patent Application Laid-Open No. 2003-20135 also discloses a method in which the sheet body is not held, but only the support plate that supports the sheet body is tilted to operate. However, if this method When applied to an optical sheet laminate, when warpage occurs on the optical sheet, it cannot be transferred without causing the optical sheets to shift from each other

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] A gripping device including a gripping member made of nitrile rubber having a Shore hardness of A30 as the gripping members 11 and 12 was prepared.

Embodiment 2

[0097] A holding device including a holding member made of nitrile rubber was prepared in the same manner as in Example 1 except that nitrile rubber having a Shore hardness of A50 was used as the nitrile rubber.

Embodiment 3

[0099] A holding device including a holding member made of nitrile rubber was prepared in the same manner as in Example 1 except that nitrile rubber having a Shore hardness of A20 was used as the nitrile rubber.

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PUM

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Abstract

Disclosed is a grasping device capable of grasping a laminate of optical sheets without damaging the optical sheets and without integrating the optical sheets by bonding and so on. A grasping device (1) comprises a pair of grasping members (11, 12), and a supporting part (13) which so support the pair of grasping members (11, 12) that the grasping members can approach to is separated from each other in the displacement direction (Z), and a laminate (20) of optical sheets is grasped by the pair of grasping members (11, 12) from the opposite sides in the thickness direction of the laminate. Surface portions (11a, 12a) of the grasping members (11, 12) abutting on the laminate (20) of optical sheets has a Durometer hardness prescribed in JIS K6253:2006 of A50 or less.

Description

technical field [0001] The invention relates to a gripping device which combines a plurality of stacked optical sheets into one and clamps the front and back sides thereof for gripping and transferring. Background technique [0002] In a planar light-emitting device for illuminating a liquid crystal display element, at least one prism sheet having a light-collecting function and a diffusion sheet for uniformly diffusing emitted light are respectively incorporated. An optical sheet such as a prism sheet and a diffusion sheet is produced by punching out only the optical sheet into a predetermined shape in a state of being bonded to a conveyance sheet. Take out the punched optical sheets one by one by hand, and assemble them in the planar light emitting device. When the process of taking out the punched optical sheet is automated, a method of taking out the optical sheet one by one by sucking the surface of the optical sheet is used. [0003] Japanese Patent Application Laid-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J15/08B65H5/14
CPCB65H5/14G02B6/0065G02B6/005
Inventor 庄子裕史
Owner SHARP KK