CN216926525U

CN216926525U - Test fixture for adhesive force of diffusion black strip

Info

Publication number: CN216926525U
Application number: CN202122761322.6U
Authority: CN
Inventors: 胡榕建; 骆志锋
Original assignee: Shenzhen Tongxingda Technology Co Ltd
Current assignee: Shenzhen Tongxingda Technology Co Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-07-08
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a test fixture for the adhesive force of a diffusion black strip, which comprises: the fixing device acts on the operating platform and is used for fixing the diffusion sheet; the thrust assembly moves on the operating platform, presses the diffusion black strips adhered to the end of the diffusion sheet, and records the thrust when the diffusion black strips fall; the thrust assembly includes: the device comprises a thrust gauge, a sliding block and a pushing block, wherein the sliding block is connected to the operating platform in a sliding mode, and the pushing block is fixed on one side of the sliding block. The utility model realizes the accurate detection of the adhesive force of the diffusion black stripes and reduces the poor display of the display module caused by the falling-off of the diffusion black stripes. The device has the advantages of simple structure, easy assembly, low cost and easy operation, the adhesive force of the diffusion black strips is tested before the diffusion black strips are attached in batches, and the attachment is carried out after the diffusion black strips are qualified, so that the yield of products is greatly improved, the economic loss of manufacturing enterprises is reduced, and the device is worth being widely popularized and used.

Description

Test fixture for adhesive force of diffusion black strip

Technical Field

The utility model relates to the technical field of display module production, in particular to a test fixture for the adhesive force of a diffusion black strip.

Background

As shown in fig. 1, in the production process of the display module, a diffusion black stripe b is usually attached to the edge of the light-emitting surface of the diffusion film a to prevent light leakage from the backlight socket. The existing diffusion black stripes have no uniform detection standard, no detection data are mainly used for the adhesion force of the diffusion black stripes, the diffusion black stripes on the existing market are uneven in quality and poor in reliability, and the diffusion black stripes often fall off in the later detection process or the product using process of the backlight module to form light leakage to cause poor display, so that the quality of the product is greatly influenced.

Therefore, aiming at the problems, a testing jig for the adhesive force of the diffusion black strips is specially developed, the adhesive force of the diffusion black strips is uniformly detected, and the qualified diffusion black strips are put into use again, so that the quality of the display module is improved, and the defects of light leakage and the like are reduced.

SUMMERY OF THE UTILITY MODEL

The technical scheme of the utility model is as follows: the utility model provides a test fixture for the adhesive force of a diffusion black strip, which comprises: the diffusion sheet fixing device comprises an operating platform, a fixing device and a thrust assembly, wherein the fixing device acts on the operating platform and is used for fixing the diffusion sheet; the thrust assembly moves on the operating platform, presses the diffusion black strips adhered to the end of the diffusion sheet, and records the thrust when the diffusion black strips fall;

the thrust assembly includes: the device comprises a thrustor, a sliding block and a pushing block, wherein the sliding block is connected to the adsorption platform in a sliding mode, the pushing block is fixed on one side of the sliding block, and the testing end of the thrustor pushes the other side of the sliding block to realize testing.

Furthermore, a sliding rail is arranged on the operating platform, and the sliding block is connected to the sliding rail in a sliding mode.

Further, the pushing block comprises a horizontal pressing part, and the pressing part corresponds to the position of the diffusion black strip.

Further, the push block is a Z-shaped steel plate, and comprises: the sliding block comprises a horizontal first connecting end, a vertical second connecting end and a horizontal third connecting end, wherein the first connecting end is fixed on the sliding block, the second connecting end is connected with the first connecting end and the third connecting end, the third connecting end is the abutting portion and used for abutting against the diffusion black strips, and the thickness of the third connecting end is larger than or equal to that of the diffusion black strips.

Further, the fixing device includes: the operation platform is arranged above the sealed box body, a plurality of first through holes are formed in the top surface of the sealed box body, and a second through hole is formed in the operation platform corresponding to each first through hole; the vacuum generator carries out vacuumizing operation on the sealed box body, and the diffusion sheet is fixed by the operating platform through vacuum adsorption.

Further, in an embodiment, a gap is formed between the bottommost part of the pushing block and the operating platform, and the height of the gap is the same as the thickness of the diffusion sheet.

Further, in another embodiment, a positioning groove is formed in the operation platform, the diffusion sheet is fitted in the positioning groove, and the thickness of the positioning groove is the same as that of the diffusion sheet.

By adopting the scheme, the test fixture for the adhesive force of the diffusion black stripes has the following beneficial effects:

(1) the accurate detection of the adhesive force of the diffusion black stripes is realized, and poor display of the display module due to the fact that the adhesive force of the diffusion black stripes is not good and the diffusion black stripes are not easy to fall off is avoided.

(2) Simple structure, easy equipment, with low costs, easy operation.

Drawings

Fig. 1 is a schematic view of a diffusion sheet and diffusion black stripes in the prior art.

Fig. 2 is a schematic view of a test fixture for diffusion black stripe adhesion in embodiment 1 of the utility model.

Fig. 3 is a schematic view of a test fixture for diffusion black stripe adhesion in embodiment 2 of the utility model.

Detailed Description

The utility model is described in detail below with reference to the figures and the specific embodiments.

Example 1

As shown in fig. 2, the present invention provides a testing fixture for adhesive force of a diffusion black stripe, the testing fixture comprising: the device comprises an operation platform 10, a fixing device 20 and a thrust assembly 30, wherein the fixing device 20 is used for fixing a diffusion sheet 40, the thrust assembly 30 moves on the operation platform 10, presses against a diffusion black strip 50 adhered to the end part of the diffusion sheet 40, and records the thrust when the diffusion black strip 50 is pushed away; this is used as a criterion for determining the adhesion of the diffused black stripes 50. The adhesive force of the diffusion black strips is tested before the diffusion black strips are attached in batches, and the diffusion black strips are used after being qualified, so that the product yield is greatly improved, and the economic loss of manufacturing enterprises is reduced.

Specifically, the thrust assembly 30 includes: the device comprises a thrust gauge 31, a sliding block 32 and a pushing block 33, wherein a sliding rail (not shown) is arranged on the operating platform 10, the sliding block 32 is connected to the sliding rail in a sliding manner, and the pushing block 33 is fixed on one side of the sliding block 32. When the operation is performed, the testing end of the thrustor 31 pushes the other side of the sliding block 32, the pushing block 33 is pushed to the diffusion black stripe 50, the force is continuously applied until the diffusion black stripe 50 falls off from the diffusion sheet 40, and the data of the thrustor 31 is read to obtain the adhesive force data of the diffusion black stripe 50. In the utility model, the inventor calculates that if the adhesion test value of the diffusion black strip is 1.2kgf or more, the adhesion requirement can be met, and the product quality is ensured. In this embodiment, the pushing block 33 is a Z-shaped steel plate, and includes: the testing device comprises a horizontal first connecting end 331, a vertical second connecting end 332 and a horizontal third connecting end 333, wherein the first connecting end 331 is fixed on the sliding block 32, the second connecting end 332 is connected with the first connecting end 331 and the third connecting end 333, the third connecting end 333 is a pressing part of the pushing block 33 and is used for pressing the diffusion black strip 50, preferably, the thickness of the third connecting end 333 is larger than or equal to that of the diffusion black strip 50 so as to be fully contacted with the diffusion black strip 50, and the testing accuracy is improved.

In addition, the fixing device 20 includes: the operation platform 10 is arranged above the sealed box body 22, the top surface of the sealed box body 22 is provided with a plurality of first through holes 221, and the operation platform 10 is provided with a second through hole 12 corresponding to each first through hole 221; the vacuum generator 21 performs vacuum pumping operation on the sealed box body 22, and the diffusion sheet 40 is fixed by the operation platform 10 through vacuum adsorption, so that the thrust test on the diffusion black stripes 50 is facilitated. In other embodiments, the diffusion sheet 40 may be fixed by attaching it to the operation platform 10, and the scope of the utility model is also covered by the present disclosure. In this embodiment, a gap (not labeled) is formed between the third connecting end 333 of the pushing block 33 and the operating platform 10, and the height of the gap is the same as the thickness of the diffusion sheet 40, that is, the bottom of the third connecting end 333 of the pushing block 33 does not contact the diffusion sheet 40, so as to prevent the test result from being affected.

Example 2

As shown in fig. 3, the present embodiment is different from embodiment 1 in that a positioning groove 13 is disposed on the operation platform 10, the diffusion sheet 40 is fitted in the positioning groove 13, and the thickness of the positioning groove 13 is the same as that of the diffusion sheet 40. This arrangement also functions to keep the bottom of the third link end 333 of the push block 33 from contacting the diffusion sheet 40.

In summary, the utility model provides a testing fixture for the adhesive force of a diffusion black stripe, which can accurately detect the adhesive force of the diffusion black stripe. The utility model has simple structure, easy assembly, low cost and easy operation, tests the adhesive force of the diffusion black strips before attaching the diffusion black strips in batches, and attaches the diffusion black strips after the diffusion black strips are qualified, thereby avoiding poor display caused by unqualified diffusion black strips, greatly improving the product yield, reducing the economic loss of manufacturing enterprises, and being worth of great popularization and use.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a test fixture of diffusion black strip adhesive force which characterized in that includes: the fixing device acts on the operating platform and is used for fixing the diffusion sheet; the thrust assembly moves on the operating platform, presses the diffusion black strips adhered to the end of the diffusion sheet, and records the thrust when the diffusion black strips fall;

the thrust assembly includes: the device comprises a thrust gauge, a sliding block and a pushing block, wherein the sliding block is connected to the operating platform in a sliding mode, and the pushing block is fixed on one side of the sliding block.

2. The fixture for testing the adhesion of a diffusive black strip as claimed in claim 1, wherein the operation platform is provided with a slide rail, and the slide block is slidably connected to the slide rail.

3. The testing fixture for adhesive force of a diffusing black stripe according to claim 1, wherein the pushing block comprises a horizontal pressing part corresponding to the position of the diffusing black stripe.

4. The apparatus of claim 3, wherein the push block is a Z-shaped steel plate, comprising: the sliding block comprises a horizontal first connecting end, a vertical second connecting end and a horizontal third connecting end, wherein the first connecting end is fixed on the sliding block, the second connecting end is connected with the first connecting end and the third connecting end, the third connecting end is the abutting portion and used for abutting against the diffusion black strips, and the thickness of the third connecting end is larger than or equal to that of the diffusion black strips.

5. The testing fixture for diffusive black stripe adhesion force of claim 1, wherein the fixture comprises: the operation platform is arranged above the sealed box body, a plurality of first through holes are formed in the top surface of the sealed box body, and a second through hole is formed in the operation platform corresponding to each first through hole; the vacuum generator carries out vacuumizing operation on the sealed box body, and the diffusion sheet is fixed by the operating platform through vacuum adsorption.

6. The testing fixture for the adhesion of the black diffusion strip according to any one of claims 1 to 5, wherein a gap is formed between the bottommost portion of the push block and the operating platform, and the height of the gap is the same as the thickness of the diffusion sheet.

7. The testing fixture for the adhesion of the black diffusion strips according to any one of claims 1 to 5, wherein a positioning groove is formed in the operating platform, the diffusion sheet is fitted in the positioning groove, and the thickness of the positioning groove is the same as that of the diffusion sheet.