CN215297860U

CN215297860U - Attached displacement detection device of liquid crystal module

Info

Publication number: CN215297860U
Application number: CN202121384385.8U
Authority: CN
Inventors: 冯卫东; 高超; 程坤; 谢建金; 杨红福; 李彦仪; 屈立
Original assignee: YIBIN YINGTAI PHOTOELECTRIC CO Ltd
Current assignee: YIBIN YINGTAI PHOTOELECTRIC CO Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-24
Anticipated expiration: 2031-06-21

Abstract

The utility model belongs to the technical field of the liquid crystal module makes, especially, relate to an attached displacement detection device of liquid crystal module, comprises a workbench, the extension is provided with the dog that two mutually perpendicular set up on the terminal surface of workstation, be provided with the recess on the dog, be provided with the stress-sensitive piece in the recess, stress-sensitive piece and external equipment electric connection, two sides of liquid crystal module are hugged closely the stress-sensitive piece sets up, two other sides of liquid crystal module are fixed through flexible actuating mechanism, work as flexible actuating mechanism press from both sides the fastening timing to the liquid crystal module, each response unit of stress-sensitive piece can be with signal output to the external equipment in. The device can detect the liquid crystal module of various sizes, only need to two sides detect can, further improved detection efficiency, compare through carrying out the strain measurement to liquid crystal module, can be accurate measure less attached displacement value, measurement accuracy is high.

Description

Attached displacement detection device of liquid crystal module

Technical Field

The utility model belongs to the technical field of the liquid crystal module is made, especially, relate to an attached displacement detection device of liquid crystal module.

Background

The liquid crystal module generally comprises a back cover, an LCD screen, a front cover and the like, the middle layer also comprises internal structures such as a backlight module, a PCB (printed circuit board), a polarizer and the like, and the structures are required to be assembled and attached together in the processing process. Such as: the processes of factory-representative BL assembly (backlight and liquid crystal display are bonded together), CG bonding (liquid crystal and cover plate are bonded together) and the like are indispensable; after the product laminating is accomplished, there is the risk of displacement, consequently needs to have and can detect whether attached device that takes place the displacement of LCD module.

Among the prior art, do a special tool draw-in groove to every kind of product, the draw-in groove is done the spacing groove according to the relative position of LCD module apron, be shaded, LCD screen etc. and the LCD module that will laminate is put into the draw-in groove and is confirmed can not be put into, can put into and do not have the problem promptly, does not put into then explain attached there is the displacement. The detection method has low working efficiency and high misjudgment rate, cannot be applied to detection of liquid crystal modules with various sizes, and cannot be used universally because a corresponding clamp is required for detection of the liquid crystal modules with various sizes. The jig which is not used needs to be designed aiming at products with different specifications or models, the operation efficiency is low, and the cost is high.

Secondly, carry out the attached displacement detection of LCD module through the mode of tool draw-in groove among the prior art, need all detect four sides of LCD module, detection method is not flexible enough, measurement accuracy is low, moreover because the attached displacement of LCD module is general less, needs to satisfy this kind of requirement with the detecting instrument of high accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model provides an attached displacement detection device of liquid crystal module for the mode through the tool draw-in groove that mentions carries out the attached displacement of liquid crystal module and detects the technical problem that the detection product is single, unable general, the operating efficiency is low, the precision is low that exists in solving the background art.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides an attached displacement detection device of liquid crystal module, includes the workstation, the extension is provided with the dog that two mutually perpendicular set up on the terminal surface of workstation, be provided with the recess on the dog, be provided with the stress response piece in the recess, stress response piece and external device electric connection, each stress response piece include a plurality of induction element, two sides of LCD module are hugged closely the stress response piece sets up, two other sides of LCD module are fixed through flexible actuating mechanism, work as flexible actuating mechanism press from both sides the fastening timing to the LCD module, each induction element of stress response piece can be with signal output to external device in.

Preferably, the end face of the tooling table is provided with a fixed block, the fixed block is provided with two telescopic driving mechanisms, and the pressing block of each telescopic driving mechanism is tightly attached to the liquid crystal module.

Preferably, the telescopic driving mechanism is driven by a servo electric cylinder.

Preferably, the fixed block comprises a first fixed block and a second fixed block, and the first fixed block and the second fixed block are respectively provided with a first sliding chute and a second sliding chute; the hydraulic cylinder is characterized in that a first servo electric cylinder is arranged in the first sliding groove in a sliding mode, a first pressing block is arranged at the telescopic end of the first servo electric cylinder, a second servo electric cylinder is arranged in the second sliding groove in a sliding mode, and a second pressing block is arranged at the telescopic end of the second servo electric cylinder.

Preferably, a third servo electric cylinder is arranged on one side of the first fixed block, and a telescopic end of the third servo electric cylinder is fixedly connected with the first servo electric cylinder; and a fourth servo electric cylinder is arranged on one side of the second fixed block, and the telescopic end of the fourth servo electric cylinder is fixedly connected with the second servo electric cylinder.

Preferably, a wear-resistant silica gel layer is arranged on one surface, which is in contact with the workbench, of the first pressing block; and a wear-resistant silica gel layer is arranged on one surface of the second pressing block, which is in contact with the workbench.

Preferably, an anti-slip layer is arranged on one surface, which is in contact with the liquid crystal module, of the first pressing block; and an anti-slip layer is arranged on one surface of the second pressing block, which is in contact with the liquid crystal module.

The utility model has the advantages of as follows and beneficial effect:

the utility model discloses an attached displacement detection device of LCD module fixes the side of LCD module through flexible actuating mechanism for the stress-induction piece is hugged closely to two other sides of LCD module, and through the stress output of each response unit, and then judges whether neat side of LCD module does not have the displacement. When the side edge of the liquid crystal module is neat and has no attachment displacement, the strain borne by each sensing unit is basically consistent; when the side edge of the liquid crystal module has attachment displacement, the sensing forces of the corresponding sensing units are different, so that the strain reflected on the output equipment is not consistent. Therefore, the displacement degree of liquid crystal attachment is judged through the fluctuation range of the overall output strain value, and whether the displacement degree belongs to the distance allowable range under the normal attachment condition is judged, so that whether the attachment displacement of the parts attached to the liquid crystal module occurs or whether the parts are qualified or not can be judged. Such design can detect the LCD module of various sizes, only need to two sides carry out the strain detection can, further improved detection efficiency, compare through measuring the strain to each position of LCD module, measurement accuracy is high, can be accurate measure less attached displacement value.

Drawings

Fig. 1 is a schematic diagram of a three-dimensional structure of an attached displacement detection device for a liquid crystal module according to the present invention;

fig. 2 is a top view of an attached displacement detecting device for a liquid crystal module according to the present invention;

FIG. 3 is a rear view of FIG. 2;

fig. 4 is a schematic structural diagram of a liquid crystal module according to the present invention;

fig. 5 is a schematic structural view of the stress-sensitive sheet of the present invention;

icon: 1-workbench, 11-first stop block, 12-second stop block, 13-first fixed block, 131-first sliding chute, 14-second fixed block, 141-second sliding chute, 2-stress induction sheet, 21-first strain gauge, 211-induction unit, 22-second strain gauge, 3-liquid crystal module, 31-front cover, 32-LCD screen, 33-rear cover, 4-third servo electric cylinder, 5-first servo electric cylinder, 51-first pressing block, 6-fourth servo electric cylinder, 7-second servo electric cylinder, and 71-second pressing block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1 to 5, an attached displacement detection device for a liquid crystal module includes a workbench 1, two stoppers vertically arranged are extended from the end surface of the workbench 1, grooves are provided on the stoppers, stress-sensitive pieces 2 are provided in the grooves, and each stress-sensitive piece 2 includes a plurality of sensing units 211.

The stop block comprises a first stop block 11 and a second stop block 12, a groove is formed in the first stop block 11, a groove is formed in the second stop block 12, a first strain gauge 21 is arranged in the groove of the first stop block 11, a second strain gauge 22 is arranged in the groove of the second stop block 12, the two strain gauges are perpendicular to each other, and the two strain gauges are electrically connected with external equipment (for example, the external computer equipment can output the stress received by the external equipment and visually display the stress).

As shown in fig. 4, the liquid crystal module 3 of the present invention includes a front cover 31, an LCD panel 32, and a rear cover 33. Fig. 4 is a schematic view for explaining the attachment of the liquid crystal module 3, and the structure of the liquid crystal module 3 is not limited thereto, and may also have internal structures such as a backlight module, a PCB, a polarizer, and the like. As shown in fig. 4, in the present invention, the areas of the front cover 31, the LCD panel 32 and the rear cover 33 are equal, and there is theoretically no attachment displacement. Two sides of LCD module 3 hug closely first foil gage 21 and second foil gage 22 setting respectively, and two other sides of LCD module 3 are fixed through flexible actuating mechanism, and when flexible actuating mechanism presss from both sides the fastening to LCD module 3 regularly, each response unit 211 of first foil gage 21 and second foil gage 22 can be with signal output to external equipment in to with the visual display of stress data.

The utility model discloses an attached displacement detection device of liquid crystal module 3 fixes liquid crystal module 3's side through flexible actuating mechanism for stress-induction piece 2 is hugged closely to two other sides of liquid crystal module 3, through the stress output of each response unit 211, and then judges whether neat liquid crystal module 3's side does not have the displacement. When the side of the liquid crystal module 3 is regular and has no attachment displacement, the strain received by each sensing unit 211 is basically consistent, and the integral strain curve is basically in the same horizontal line; when the lateral side of the liquid crystal module 3 has the attaching displacement, the sensing forces of the corresponding sensing units 211 are different, so that the strains reflected on the output device are not consistent, and the overall strain output curve fluctuates and is not a horizontal line. Therefore, the displacement degree of liquid crystal attachment is judged through the fluctuation range of the overall output strain value, and whether the displacement degree belongs to the distance allowable range under the normal attachment condition is judged, so that whether the attachment displacement of the parts attached to the liquid crystal module 3 occurs or whether the attachment is qualified can be judged. Such design can detect the LCD module 3 of various sizes on work platform, only need to carry out strain detection to two sides of LCD module 3 can to need not to carry out the attached displacement detection of four directions, further improved detection efficiency. Through measuring the comparison to the strain to each position of LCD module 3 (protecgulum 31, back lid 33 and LCD screen 32) to judge attached displacement, such measuring method precision is high, can be accurate measure less attached displacement value, compare in traditional distance measurement, have easy operation, the reaction is sensitive, advantage that measurement accuracy is high.

One of the test methods exemplified herein is: after fixing through flexible actuating mechanism, supposing that the attached of protecgulum 31 and LCD screen 32 has the displacement, then there is a meeting an emergency when the face contact foil gage of protecgulum 31, and also there is a meeting an emergency when the face contact foil gage of LCD screen 32, and the time of the production of two meeting an emergency and the value of meeting an emergency are all inequality to the response is also inequality at the strain value curve on external equipment, can follow the difference of the strain value of protecgulum 31 and LCD screen 32 and judge the displacement of applying.

The embodiment of the utility model provides an in, be provided with the fixed block on the terminal surface of workstation 1, be provided with two flexible actuating mechanism on the fixed block, liquid crystal module 3 setting is hugged closely to flexible actuating mechanism's compact heap.

Preferably, flexible actuating mechanism chooses for use servo electric cylinder to drive, of course the utility model discloses can also have other flexible actuating mechanism to be suitable for, if: telescopic mechanisms such as air cylinders and oil cylinders.

Specifically, the fixed blocks include a first fixed block 13 and a second fixed block 14, and the first fixed block 13 and the second fixed block 14 are respectively provided with a first sliding chute 131 and a second sliding chute 141; a first servo electric cylinder 5 is slidably arranged in the first sliding chute 131, a first pressing block 51 is arranged at the telescopic end of the first servo electric cylinder 5, a second servo electric cylinder 7 is slidably arranged in the second sliding chute 141, and a second pressing block 71 is arranged at the telescopic end of the second servo electric cylinder 7. Carry out the centre gripping of LCD module 3 through the cylinder drive, the stroke is big, the location is accurate, can fix the LCD module 3 of various sizes on workstation 1.

In the embodiment of the present invention, a third servo electric cylinder 4 is disposed on one side of the first fixing block 13, and the telescopic end of the third servo electric cylinder 4 is fixedly connected to the first servo electric cylinder 5; a fourth servo electric cylinder 6 is arranged on one side of the second fixing block 14, and the telescopic end of the fourth servo electric cylinder 6 is fixedly connected with the second servo electric cylinder 7. In order to ensure that the first servo electric cylinder 5 and the second servo electric cylinder 7 can be stably fixed to the liquid crystal module 3 with various sizes, when the size of the liquid crystal module 3 changes, the positions of the first servo electric cylinder 5 and the second servo electric cylinder 7 correspondingly need to be changed, so that the first pressing block 51 and the second pressing block 71 are always clamped stably to the liquid crystal module 3 at the central position. Consequently, set up third servo electric cylinder 4 and fourth servo electric cylinder 6, drive first servo electric cylinder 5 and second servo electric cylinder 7 through third servo electric cylinder 4 and fourth servo electric cylinder 6 and slide the change position in the spout to put at the central point of LCD module 3 and realize stable centre gripping, further improved the accuracy that attached displacement detected.

Further, a wear-resistant silica gel layer is arranged on one surface, which is in contact with the workbench 1, of the first pressing block 51; and a wear-resistant silica gel layer is arranged on one surface of the second pressing block 71, which is in contact with the workbench 1. Due to the design, the abrasion of the pressing block to the end face of the workbench 1 is reduced, and the measurement precision can be ensured.

Further, an anti-slip layer is arranged on one surface of the first pressing block 51, which is in contact with the liquid crystal module 3; and an anti-slip layer is arranged on one surface of the second pressing block 71, which is in contact with the liquid crystal module 3, so that the clamping stability can be further improved, and the measurement accuracy is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The liquid crystal module attaching displacement detection device is characterized by comprising a workbench (1), wherein two check blocks which are perpendicular to each other are arranged on the end face of the workbench (1) in an extending mode, grooves are formed in the check blocks, stress induction sheets (2) are arranged in the grooves, the stress induction sheets (2) are electrically connected with external equipment, each stress induction sheet (2) comprises a plurality of induction units (211), two side edges of a liquid crystal module (3) are tightly attached to the stress induction sheets (2), the other two side edges of the liquid crystal module (3) are fixed through a telescopic driving mechanism, when the telescopic driving mechanism clamps and fastens the liquid crystal module (3) at regular time, and each induction unit (211) of each stress induction sheet (2) can output signals to the external equipment.

2. The device for detecting the attachment displacement of the liquid crystal module according to claim 1, wherein: the end face of the workbench (1) is provided with a fixed block, the fixed block is provided with two telescopic driving mechanisms, and the pressing blocks of the telescopic driving mechanisms are tightly attached to the liquid crystal module (3).

3. The device for detecting the attachment displacement of the liquid crystal module according to claim 2, wherein: the telescopic driving mechanism is driven by a servo electric cylinder.

4. The device for detecting the attachment displacement of the liquid crystal module according to claim 2, wherein: the fixing blocks comprise a first fixing block (13) and a second fixing block (14), and a first sliding groove (131) and a second sliding groove (141) are respectively formed in the first fixing block (13) and the second fixing block (14); a first servo electric cylinder (5) is arranged in the first sliding groove (131) in a sliding mode, a first pressing block (51) is arranged at the telescopic end of the first servo electric cylinder (5), a second servo electric cylinder (7) is arranged in the second sliding groove (141) in a sliding mode, and a second pressing block (71) is arranged at the telescopic end of the second servo electric cylinder (7).

5. The device for detecting the attachment displacement of the liquid crystal module according to claim 4, wherein: a third servo electric cylinder (4) is arranged on one side of the first fixed block (13), and the telescopic end of the third servo electric cylinder (4) is fixedly connected with the first servo electric cylinder (5); and a fourth servo electric cylinder (6) is arranged on one side of the second fixing block (14), and the telescopic end of the fourth servo electric cylinder (6) is fixedly connected with the second servo electric cylinder (7).

6. The device for detecting the attachment displacement of the liquid crystal module according to claim 4, wherein: a wear-resistant silica gel layer is arranged on one surface, which is in contact with the workbench (1), of the first pressing block (51); and a wear-resistant silica gel layer is arranged on one surface of the second pressing block (71) which is in contact with the workbench (1).

7. The device for detecting the attachment displacement of the liquid crystal module according to claim 4, wherein: an anti-slip layer is arranged on one surface, in contact with the liquid crystal module (3), of the first pressing block (51); and an anti-slip layer is arranged on one surface of the second pressing block (71) which is in contact with the liquid crystal module (3).