Corner peeling device, film peeling apparatus and film peeling method

Patent metadata

Field	Value
Publication number	US-2016193822-A1
Application number	US-201514743068-A
Country	US
Kind code	A1
Filing date	Jun 18, 2015
Priority date	Jan 4, 2015
Publication date	Jul 7, 2016
Grant date	—

Abstract

This invention discloses a corner peeling device, a film peeling apparatus, and a film peeling method, and relates to the technical field of liquid crystal panel manufacture, for the purpose of solving the problem concerning low efficiency in film peeling. The corner peeling device comprises: a movable rack; a roller pivoted on the upper part of the rack; an evacuating device in communication with the air channel; and an automatic revolving device, which is connected to the roller so that at the beginning of corner peeling and after corner peeling, the opening of the same sucking hole at one end of the plurality of the sucking holes arranged at intervals is upward. The corner peeling device is used for peeling a corner of a release film adhered to a plate-like substrate. The film peeling apparatus comprises the corner peeling device mentioned in the technical solution described above.

First claim

1 . A corner peeling device, comprising:
a movable rack; a roller pivoted on an upper part of the rack, wherein the roller is provided with an air channel as well as a plurality of sucking holes in respective communication with the air channel and an outer circumferential surface of the roller therein, and wherein openings of the plurality of the sucking holes are arranged at intervals along a circumferential direction of the roller; an evacuating device in communication with the air channel; and an automatic revolving device, which is connected to the roller so that at the beginning of corner peeling and after corner peeling, the opening of a same sucking hole at a first end of the plurality of sucking holes arranged at intervals is upward.

2 . The corner peeling device according to claim 1 , wherein from the first end where the sucking hole whose opening is upward at the beginning of corner peeling and after corner peeling is positioned, to a second opposite end, sizes of the openings of the plurality of the sucking holes increase in turn.

3 . The corner peeling device according to claim 1 , wherein the openings of the plurality of the sucking holes are arranged at intervals on less than or equal to a quarter of the outer circumferential surface of the roller.

4 . The corner peeling device according to claim 1 , wherein the roller is provided with a plurality of air channels, each of the air channels is in communication with one corresponding sucking hole of the plurality of the sucking holes, and each of the air channels is in respective communication with the evacuating device via an electromagnetic valve.

5 . The corner peeling device according to claim 2 , wherein the roller is provided with a plurality of air channels, each of the air channels is in communication with one corresponding sucking hole of the plurality of the sucking holes, and each of the air channels is in respective communication with the evacuating device via an electromagnetic valve.

6 . The corner peeling device according to claim 3 , wherein the roller is provided with a plurality of air channels, each of the air channels is in communication with one corresponding sucking hole of the plurality of the sucking holes, and each of the air channels is in respective communication with the evacuating device via an electromagnetic valve.

7 . The corner peeling device according to claim 4 , wherein the roller is a rubber roller or a metal roller which is annularly provided with a rubber layer on the outer circumferential surface.

8 . The corner peeling device according to claim 5 , wherein the roller is a rubber roller or a metal roller which is annularly provided with a rubber layer on the outer circumferential surface.

9 . The corner peeling device according to claim 6 , wherein the roller is a rubber roller or a metal roller which is annularly provided with a rubber layer on the outer circumferential surface.

10 . The corner peeling device according to claim 1 , wherein the automatic revolving device comprises a torsion spring, which has a first end in fixed connection with one end of the roller and a second opposite end in fixed connection with the rack.

11 . The corner peeling device according to claim 1 , wherein the corner peeling device further comprises:
a first driving device which is connected to the rack to allow horizontal movement and vertical movement of the rack; and a first controlling device which is in signal connection with the first driving device to control the horizontal movement and vertical movement of the rack via the first driving device, wherein the first controlling device is further in signal connection with the evacuating device to control a start, shut off, and evacuating degree of the evacuating device.

12 . A film peeling apparatus comprising the corner peeling device according to claim 11 and a film ripping device beside the corner peeling device, wherein, the film ripping device comprises:
a base;
a second driving device which is connected to the base to allow horizontal movement of the base;
a fixed clamp plate which is fixedly mounted on the base;
a movable clamp plate which is skid-mounted on the base and is disposed opposite to the fixed clamp plate;
a third driving device which is connected to the movable clamp plate to drive the movable clamp plate to move toward or backward from the fixed clamp plate;
a sensor configured to detect whether there is a release film from a peeled corner between the fixed clamp plate and the movable clamp plate; and
a second controlling device which is in signal connection with the second driving device, the sensor, and the third driving device respectively, wherein when the sensor detects that there is a release film from a peeled corner between the fixed clamp plate and the movable clamp plate, the second controlling device controls the movable clamp plate via the third driving device to move toward the fixed clamp plate to clamp the release film, and after the fixed clamp plate and the movable clamp plate clamp the release film, the second controlling device controls the base via the second driving device to perform horizontal movement to peel the release film off a plate-like substrate.

13 . The film peeling apparatus according to claim 12 , wherein the first controlling device and the second controlling device are integrated in an identical controller.

14 . A film peeling method using the film peeling apparatus according to claim 12 , comprising the steps of:
positioning the film peeling apparatus below the plate-like substrate having the release film to be peeled, and bringing a sucking hole, which is positioned at the first end and whose opening is upward at the beginning of corner peeling and after corner peeling under the action of the automatic revolving device, into contact with a corner of the release film to adhere the corner of the release film; horizontally moving the rack and peeling the corner of the release film by using the sucking hole positioned at the first end while the roller automatically rotates, and as the roller automatically rotates, bringing the remaining sucking holes into contact with the release film to adhere the release film so as to further peel the corner of the release film; and when the sensor detects that there is release film from the peeled corner between the fixed clamp plate and the movable clamp plate, the evacuating device is shut off, the rack is moved downward to separate the roller from the release film, the second controlling device controls the movable clamp plate via the third driving device to move toward the fixed clamp plate to clamp the release film, and after the fixed clamp plate and the movable clamp plate clamp the release film, the second controlling device controls the base via the second driving device to perform horizontal movement to peel the release film off the plate-like substrate.

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Display Tech Co

Inventors

• Ni Shuang
• Zhang Shichu
• Wang Ziran
• Chang Bin
• Lu Zhenshan

Classifications

• B32B43/006 Primary

  Delaminating · CPC title

• B32B38/105

  on edges · CPC title

• B32B2457/202

  LCD, i.e. liquid crystal displays · CPC title

• Y10T156/1944

  Vacuum delaminating means [e.g., vacuum chamber, etc.] · CPC title

• Y10T156/1978

  Delaminating bending means · CPC title