Pressure applying device for strength detection of liquid crystal display screen

Abstract

The invention discloses a liquid crystal display screen strength detection pressure applying device, and relates to the technical field of liquid crystal display screen detection, the liquid crystal display screen strength detection pressure applying device comprises a central pressure applying assembly, and the central pressure applying assembly comprises an electric cylinder, a lifting plate, a limiting seat, a wedge block, a movable block, a spring, a trigger rod, a slot, a central collision block and a fastening screw rod. In the using process, the central collision block is driven by the electric cylinder to abut against and apply pressure to the central area of the liquid crystal screen body as a core action, and the compressive strength of the central area of the liquid crystal screen body is tested while the target of testing the compressive strength of the central area of the liquid crystal screen body is met; not only is the one-time descending stroke of the lifting plate linked with the pre-cleaning action of the hair collecting roller before, but also the last-time descending stroke of the lifting plate is linked with the synchronous opposite folding action of the side collision blocks on the two sides; meanwhile, the pre-cleaning requirement before testing of the liquid crystal screen body and the compressive strength testing target of the left edge and the right edge of the liquid crystal screen body are met, and the process integration degree is higher.

Description

Technical Field

[0001] The invention relates to the technical field of liquid crystal display screen detection, and in particular to a pressure-applying device for strength detection of a liquid crystal display screen. Background Art

[0002] Liquid crystal display is a type of display used in digital clocks and many portable computers. Liquid crystal display uses two polarized materials with a liquid crystal solution between them. When an electric current passes through the liquid, it rearranges the crystals so that light cannot pass through them. Therefore, each crystal acts like a shutter, which can both allow light to pass through and block light. During the production process of existing LCD screens, the strength of the LCD screens needs to be tested to avoid the LCD screen strength not meeting the regulations, resulting in the production of LCD screens that do not meet the quality standards.

[0003] Existing LCD screen strength detection devices generally use a collision head to continuously apply impact force to the LCD screen to achieve a simulated collision effect, thereby realizing strength detection of the LCD screen. However, the existing technology usually only applies impact force to the central area of ​​the LCD screen for detection, and it is difficult to perform multi-point detection. However, the screen portion of the LCD display is made of glass packaging, and the thickness of the entire screen is very thin, especially the left and right edges of the glass screen are thinner, and circuit leads are also packaged inside. These parts are the parts of the LCD screen that are most susceptible to squeezing and causing glass breakage. Once broken, the screen will cause screen noise, bright lines, and bright bands, and cannot be repaired. The existing detection device lacks squeezing tests on the left and right edges of the LCD screen, resulting in limited test results and questionable credibility.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a liquid crystal display screen strength detection pressure device is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid crystal display screen intensity detection pressure device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid crystal display screen strength detection pressure device, comprising a central pressure component, the central pressure component comprising an electric cylinder, a lifting plate, a limit seat, a wedge block, a movable block, a spring, a trigger rod, a slot, a central collision block and a fastening screw, the output end of the electric cylinder is fixedly connected to the lifting plate, and a limit seat is fixedly installed at the middle end of the bottom of the lifting plate, and wedge blocks are fixedly installed at both ends of the outer side of the limit seat, a movable block is slidably installed inside the limit seat, and the top of the movable block is elastically connected to the lifting plate through a spring, and the back of the bottom end of the movable block is fixedly connected to the trigger rod, the bottom end of the movable block is provided with a slot along the length direction, and the central collision block is inserted into the slot, and the central collision block is fixed to the movable block through a fastening screw.

[0007] Furthermore, the electric cylinder is fixedly mounted on the top end surface of the test bench by bolts, and guide pillars are fixedly mounted on both sides of the recess of the test bench, and the guide pillars are slidably matched with the through holes on both sides of the lifting plate.

[0008] Furthermore, a groove is opened in the middle of the test bench, and a lower plate is fixed at the middle end of the groove, an air pipe is connected to the bottom end of the lower plate cavity, and the end of the air pipe is threadedly connected to the vacuum pump through a vacuum interface.

[0009] Furthermore, the upper plate is sealed and fixed to the top of the lower plate, and the upper plate is provided with a suction hole connected to the inner cavity of the lower plate, and the liquid crystal screen body is adsorbed and fixed above the suction hole.

[0010] Furthermore, side pressure assemblies are movably provided on both sides of the groove, and the side pressure assemblies include end plates and a core rod. The end plates are fixedly installed at both ends of the groove, and the end plates are fixedly connected to adjacent sides of the lower plate through the core rod.

[0011] Furthermore, the side pressure assembly also includes a slider and a return spring. The slider is axially slidably mounted on the core rod, and the slider is elastically connected to the adjacent side of the lower plate through the return spring.

[0012] Furthermore, the side pressure assembly also includes a pin, a side collision block and an avoidance recess. The top of the slider is integrally fixed with a pin, and the slider is plugged and fixed to the side collision block through the pin. The top conical surface of the side collision block is squeezed and matched with the bottom inclined surface of the wedge block, and an avoidance recess matching the thickness of the upper plate is opened on the inner side of the side collision block.

[0013] Furthermore, a linkage cleaning assembly is provided on the inner wall of the test bench recess, and the linkage cleaning assembly includes a fixing pin and a rocker arm. The fixing pin is fixedly mounted on the inner wall of the test bench recess, and a rocker arm is rotatably mounted inside the fixing pin.

[0014] Furthermore, the linkage cleaning component also includes a lint-removing roller and a flange. A lint-removing roller made of a flexible material is rotatably installed between the ends of the rocker arms, and a flange is integrally fixed to the middle of the rocker arms.

[0015] Furthermore, the linkage cleaning assembly also includes a connecting rod and a tension spring, the connecting rod is fixedly connected between the flanges, the connecting rod is abutted against the trigger rod, and the connecting rod is elastically connected to the inner wall of the test bench recess through the tension spring.

[0016] The present invention provides a liquid crystal display screen strength detection pressure device, which has the following beneficial effects:

[0017] 1. During the use of the present invention, the present application uses the abutment and pressure application of the lower center collision block driven by the electric cylinder to the center area of ​​the liquid crystal screen body as the core action. While meeting the compressive strength test target of the center area of ​​the liquid crystal screen body, not only is the first descending stroke of the lifting plate linked with the pre-cleaning action of the lint-sticking roller before this, but also the last descending stroke of the lifting plate is linked with the synchronous closing action of the side collision blocks on both sides after this, and at the same time, the pre-cleaning requirements before the test of the liquid crystal screen body and the compressive strength test target of the left and right edges of the liquid crystal screen body are met, making the strength detection method of the present application more comprehensive and improving the accuracy of the detection results. Moreover, through reasonable linkage design, the pre-test pre-cleaning, the abutment and pressure application of the center area of ​​the liquid crystal screen body and the compressive strength test actions of the left and right edges of the liquid crystal screen body are highly integrated, and can be completed continuously in three stages during the downward pressing process of the lifting plate, with a higher degree of integration between processes, and the detection efficiency is improved while reducing the required equipment cost;

[0018] 2. During the use of the present invention, the LCD screen body is first clamped on the upper plate and its left and right edges are placed corresponding to the adjacent sides of the upper plate. Then, the vacuum interface of the air pipe at the bottom end of the lower plate cavity is connected to the vacuum pump to form a negative pressure inside the lower plate cavity, and the LCD screen body is firmly adsorbed on the suction hole of the upper plate. The present application links a descending stroke of the lifting plate with the pre-cleaning action of the hair-sticking roller. The lifting plate drives the stroke change of the lower movable block to squeeze the connecting rod between the middle flanges of the rocker arm, thereby driving the hair-sticking roller to pre-clean the surface of the LCD screen body, thereby preventing the presence of particulate impurities on the surface of the LCD screen body from causing excessive stress concentration during subsequent pressure testing, resulting in deviations in the test results, and effectively ensuring the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0020] Figure 2 This is a schematic diagram of the external structure of the side pressure component of the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of the side pressure assembly of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the linkage cleaning component of the present invention;

[0023] Figure 5 This is a schematic diagram of the explosion structure of the central pressure component of the present invention;

[0024] Figure 6 It is a schematic cross-sectional structure diagram of the central pressure component of the present invention.

[0025] In the figure: 1. Central pressure assembly; 101. Electric cylinder; 102. Lifting plate; 103. Limit seat; 104. Wedge block; 105. Movable block; 106. Spring; 107. Trigger rod; 108. Slot; 109. Central collision block; 110. Fastening screw; 2. Test bench; 3. Guide column; 4. Groove; 5. Lower plate; 6. Air pipe; 7. Vacuum interface; 8. Upper plate; 9. Suction hole; 10. LCD screen body; 11. Side pressure assembly; 1101. End plate; 1102. Core rod; 1103. Slider; 1104. Return spring; 1105. Latch; 1106. Side collision block; 1107. Avoidance recess; 12. Linkage cleaning assembly; 1201. Fixing pin; 1202. Rocker arm; 1203. Lint-removing roller; 1204. Flange; 1205. Connecting rod; 1206. Tension spring. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0027] See also Figures 1 to 6 The present invention provides a technical solution: a liquid crystal display screen strength detection pressure device, comprising a central pressure component 1, the central pressure component 1 comprises an electric cylinder 101, a lifting plate 102, a limit seat 103, a wedge 104, a movable block 105, a spring 106, a trigger rod 107, a slot 108, a central collision block 109 and a fastening screw 110, the output end of the electric cylinder 101 is fixedly connected to the lifting plate 102, and the limit seat 103 is fixedly installed at the middle end of the bottom of the lifting plate 102, and the wedges 104 are fixedly installed at both ends of the outer side of the limit seat 103, and the limit seat 103 is slidably installed inside. There is a movable block 105, and the top of the movable block 105 is elastically connected to the lifting plate 102 through a spring 106, and a trigger rod 107 is fixedly connected to the back of the bottom end of the movable block 105, a slot 108 is opened at the bottom end of the movable block 105 along the length direction, and a center collision block 109 is inserted into the slot 108, and the center collision block 109 is fixed to the movable block 105 through a fastening screw 110, the electric cylinder 101 is fixedly installed on the top end surface of the test bench 2 by bolts, and guide pillars 3 are fixedly installed on both sides of the recess of the test bench 2, and the guide pillars 3 are slidably matched with the through holes on both sides of the lifting plate 102;

[0028] The specific operation is as follows. Secondly, after the lint-sticking roller 1203 rolls over the surface of the LCD screen body 10, with the continuous descent of the movable block 105, the central collision block 109 touches the LCD screen body 10, and with the force contraction of the spring 106, the central collision block 109 continuously applies pressure to the central area of ​​the LCD screen body 10, so as to determine whether the strength of the central area of ​​the LCD screen body 10 meets the preset pressure value. The present application uses the electric cylinder 101 to drive the central collision block 109 to abut against the central area of ​​the LCD screen body 10 as the core action. While meeting the compressive strength test target of the central area of ​​the LCD screen body 10, not only the one-time descending stroke of the lifting plate 102 is combined with the preset pressure of the lint-sticking roller 1203 before that. The cleaning action is linked, and the last descending stroke of the lifting plate 102 is linked with the synchronous closing action of the side collision blocks 1106 on both sides, which satisfies the pre-cleaning requirements of the LCD body 10 before the test and the compressive strength test target of the left and right edges of the LCD body 10 at the same time, making the strength detection method of the present application more comprehensive and improving the accuracy of the detection result. In addition, through reasonable linkage design, the pre-cleaning before the test, the abutting pressure of the central area of ​​the LCD body 10 and the compressive strength test of the left and right edges of the LCD body 10 are highly integrated, which can be completed continuously in three stages during the downward pressing process of the lifting plate 102, with a higher degree of integration between processes, and the detection efficiency is improved while reducing the required equipment cost.

[0029] See also Figures 2 to 3 A groove 4 is provided in the middle of the test bench 2, and a lower plate 5 is fixed at the middle end of the groove 4, an air pipe 6 is connected to the bottom end of the cavity of the lower plate 5, and the end of the air pipe 6 is threadedly connected to the vacuum pump through a vacuum interface 7, an upper plate 8 is sealed and fixed to the top of the lower plate 5, and the upper plate 8 is provided with a suction hole 9 connected to the internal cavity of the lower plate 5, and a liquid crystal screen body 10 is adsorbed and fixed above the suction hole 9, side pressure components 11 are movably provided on both sides of the groove 4, and the side pressure components 11 include end plates 1101 and a core rod 1102, the end plates 1101 are fixedly installed at both ends of the groove 4, and the end plates 1101 and the adjacent sides of the lower plate 5 are fixedly connected by the core rod 1102, and the side pressure components 11 It also includes a slider 1103 and a return spring 1104. The slider 1103 is axially slidably installed on the core rod 1102, and the slider 1103 is elastically connected to the adjacent side of the lower plate 5 through the return spring 1104. The side pressure assembly 11 also includes a latch 1105, a side collision block 1106 and an avoidance recess 1107. The top of the slider 1103 is integrally fixed with the latch 1105, and the slider 1103 is plugged and fixed to the side collision block 1106 through the latch 1105. The top conical surface of the side collision block 1106 is squeezed and matched with the bottom inclined surface of the wedge block 104, and the inner side of the side collision block 1106 is provided with an avoidance recess 1107 that matches the thickness of the upper plate 8;

[0030] The specific operation is as follows: first, the LCD screen body 10 is clamped on the upper plate 8 and its left and right edges are placed corresponding to the adjacent sides of the upper plate 8, and then the vacuum interface 7 of the air pipe 6 at the bottom end of the cavity of the lower plate 5 is connected to the vacuum pump to form a negative pressure inside the cavity of the lower plate 5, and the LCD screen body 10 is firmly adsorbed on the suction hole 9 of the upper plate 8. Finally, in the last descending stroke of the movable block 105, the wedge blocks 104 at both ends of the outer side of the limit seat 103 abut against the side collision blocks 1106 at both ends of the groove 4, thereby driving the side collision blocks 1106 on both sides to overcome the elastic force of the return spring 1104 and be located on the corresponding core rod 1102 to close synchronously, and the side collision blocks 1106 squeeze and collide with the left and right edges of the LCD screen body 10, so as to determine whether the strength of the side area of ​​the liquid crystal body meets the standard under the preset pressure value;

[0031] See also Figure 4 , a linkage cleaning assembly 12 is provided on the inner wall of the recess of the test bench 2, and the linkage cleaning assembly 12 includes a fixing pin 1201 and a rocker arm 1202, the fixing pin 1201 is fixedly installed on the inner wall of the recess of the test bench 2, and the rocker arm 1202 is rotatably installed inside the fixing pin 1201, the linkage cleaning assembly 12 also includes a lint-sticking roller 1203 and a flange 1204, a lint-sticking roller 1203 made of a flexible material is rotatably installed between the ends of the rocker arm 1202, and the flange 1204 is fixedly fixed in the middle of the rocker arm 1202, the linkage cleaning assembly 12 also includes a connecting rod 1205 and a tension spring 1206, a connecting rod 1205 is fixedly connected between the flanges 1204, and the connecting rod 1205 is abutted and matched with the trigger rod 107, and the connecting rod 1205 is elastically connected to the inner wall of the recess of the test bench 2 through the tension spring 1206;

[0032] The specific operation is as follows: during the test, the central collision block 109 corresponding to the required test point of the LCD screen body 10 is selected and fixed to the movable block 105 by the fastening screw 110, the electric cylinder 101 is activated and the lifting plate 102 is driven to slide down on the guide pillars 3 on both sides of the notch of the test bench 2. First, before the central collision block 109 touches the LCD screen body 10, the movable block 105 contacts the connecting rod 1205 between the middle flange 1204 of the rocker arm 1202 through the trigger rod 107 during the descent process, so that the rocker arm 1202 overcomes the elastic force of the tension spring 1206 and drives it The lint-free roller 1203 at the end swings to roll and clean the surface of the LCD screen body 10. The present application links a descending stroke of the lifting plate 102 with the pre-cleaning action of the lint-free roller 1203. The lifting plate 102 drives the stroke change of the lower movable block 105 to squeeze the connecting rod 1205 between the middle flange 1204 of the rocker arm 1202, thereby driving the lint-free roller 1203 to pre-clean the surface of the LCD screen body 10, thereby preventing the presence of particulate impurities on the surface of the LCD screen body 10 from causing excessive stress concentration during the subsequent pressure test, resulting in deviation in the test results, thereby effectively ensuring the test accuracy.

[0033] In summary, when using the pressure-applying device for detecting the strength of the liquid crystal display screen, firstly clamp the liquid crystal screen body 10 on the upper plate 8 and place its left and right edges corresponding to the adjacent sides of the upper plate 8, then connect the vacuum interface 7 of the air pipe 6 at the bottom end of the cavity of the lower plate 5 to the vacuum pump to form a negative pressure inside the cavity of the lower plate 5, and firmly adsorb the liquid crystal screen body 10 on the suction hole 9 of the upper plate 8. During the test, select the central collision block 109 corresponding to the required test point of the liquid crystal screen body 10 and fix it to the movable block 105 by the fastening screw 110, activate the electric cylinder 101 and drive the lifting plate 102 to slide down on the guide pillars 3 on both sides of the recess of the test bench 2. First, before the central collision block 109 touches the liquid crystal screen body 10 During the descent process, the movable block 105 contacts the connecting rod 1205 between the middle flange 1204 of the rocker arm 1202 through the trigger rod 107, so that the rocker arm 1202 overcomes the elastic force of the tension spring 1206 and drives the lint-sticking roller 1203 at its end to swing, and the surface of the LCD screen body 10 is rolled and cleaned. The present application links a descending stroke of the lifting plate 102 with the pre-cleaning action of the lint-sticking roller 1203, and the lifting plate 102 drives the stroke change of the lower movable block 105 to squeeze the connecting rod 1205 between the middle flange 1204 of the rocker arm 1202, thereby driving the lint-sticking roller 1203 to pre-clean the surface of the LCD screen body 10, thereby preventing the subsequent cleaning caused by the presence of particulate impurities on the surface of the LCD screen body 10. During the pressure test, excessive concentration of stress causes deviation in the test results, which effectively ensures the test accuracy. Secondly, after the lint-sticking roller 1203 rolls over the surface of the LCD screen body 10, with the continuous decline of the movable block 105, the central collision block 109 touches the LCD screen body 10, and with the force contraction of the spring 106, the central collision block 109 continuously applies pressure to the central area of ​​the LCD screen body 10, so as to determine whether the strength of the central area of ​​the LCD screen body 10 meets the standard under the preset pressure value. Finally, in the last descending stroke of the movable block 105, the wedge blocks 104 at the two ends of the outer side of the limit seat 103 abut against the side collision blocks 1106 at the two ends of the groove 4, thereby driving the side collision blocks 1106 on both sides to overcome The elastic force of the return spring 1104 is located on the corresponding core rod 1102 and closed synchronously. The side collision block 1106 squeezes and collides the left and right edges of the LCD body 10 to determine whether the strength of the side area of ​​the LCD body meets the preset pressure value. The application uses the electric cylinder 101 to drive the lower center collision block 109 to abut against the central area of ​​the LCD body 10 as the core action. While meeting the test target of the compressive strength of the central area of ​​the LCD body 10, not only is the first descending stroke of the lifting plate 102 linked with the pre-cleaning action of the lint-sticking roller 1203 before this, but also the last descending stroke of the lifting plate 102 is linked with the synchronous closing action of the side collision blocks 1106 on both sides afterwards.At the same time, it meets the pre-cleaning requirements of the LCD body 10 before testing and the compressive strength test target of the left and right edges of the LCD body 10, making the strength detection method of this application more comprehensive and improving the accuracy of the detection results. Through reasonable linkage design, the pre-cleaning before testing, the abutment pressure of the central area of ​​the LCD body 10, and the compressive strength test of the left and right edges of the LCD body 10 are highly integrated, which can be completed continuously in three stages during the downward pressing process of the lifting plate 102. The integration between processes is higher, the detection efficiency is improved, and the required equipment cost is reduced.

[0034] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various implementations with various modifications suitable for specific uses.

Claims

1. A pressure-applying device for detecting the strength of a liquid crystal display screen, comprising a central pressure-applying component (1), characterized in that: The central pressure component (1) comprises an electric cylinder (101), a lifting plate (102), a limiting seat (103), a wedge block (104), a movable block (105), a spring (106), a trigger rod (107), a slot (108), a central collision block (109) and a fastening screw (110); the output end of the electric cylinder (101) is fixedly connected to the lifting plate (102), and the limiting seat (103) is fixedly installed at the middle end of the bottom of the lifting plate (102), and the wedge blocks (104) are fixedly installed at both ends of the outer side of the limiting seat (103). 04), a movable block (105) is slidably installed inside the limit seat (103), and the top of the movable block (105) is elastically connected to the lifting plate (102) through a spring (106), and a trigger rod (107) is fixedly connected to the back of the bottom end of the movable block (105), and a slot (108) is opened at the bottom end of the movable block (105) along the length direction, and a center collision block (109) is inserted into the slot (108), and the center collision block (109) is fixed to the movable block (105) through a fastening screw (110).

2. The liquid crystal display screen strength detection pressure device according to claim 1, characterized in that: The electric cylinder (101) is fixedly mounted on the top end surface of the test bench (2) by means of bolts, and guide pillars (3) are fixedly mounted on both sides of the recess of the test bench (2), and the guide pillars (3) are slidably matched with through holes on both sides of the lifting plate (102).

3. The liquid crystal display screen strength detection pressure device according to claim 2, characterized in that: A groove (4) is provided in the middle of the test bench (2), and a lower plate (5) is fixed at the middle end of the groove (4); an air pipe (6) is connected to the bottom end of the cavity of the lower plate (5), and the end of the air pipe (6) is threadedly connected to a vacuum pump via a vacuum interface (7).

4. The liquid crystal display screen strength detection pressure device according to claim 3, characterized in that: An upper plate (8) is sealed and fixed to the top of the lower plate (5), and the upper plate (8) is provided with a suction hole (9) connected to the internal cavity of the lower plate (5), and a liquid crystal screen body (10) is adsorbed and fixed above the suction hole (9).

5. The liquid crystal display screen strength detection pressure device according to claim 4, characterized in that: Side pressure assemblies (11) are movably arranged on both sides of the groove (4), and the side pressure assemblies (11) comprise end plates (1101) and a core rod (1102). The end plates (1101) are fixedly mounted on both ends of the groove (4), and the end plates (1101) are fixedly connected to adjacent sides of the lower plate (5) via the core rod (1102).

6. The liquid crystal display screen strength detection pressure device according to claim 5, characterized in that: The side pressure assembly (11) further comprises a slider (1103) and a return spring (1104); the slider (1103) is axially slidably mounted on the core rod (1102), and the slider (1103) is elastically connected to the adjacent side of the lower plate (5) via the return spring (1104).

7. The liquid crystal display screen strength detection pressure-applying device according to claim 6, characterized in that: The side pressure assembly (11) further comprises a latch (1105), a side collision block (1106) and an avoidance recess (1107); the latch (1105) is integrally fixed to the top of the slider (1103); the slider (1103) is plugged and fixed to the side collision block (1106) via the latch (1105); the top conical surface of the side collision block (1106) is squeezed and matched with the bottom inclined surface of the wedge block (104); and the inner side of the side collision block (1106) is provided with an avoidance recess (1107) matched with the thickness of the upper plate (8).

8. The liquid crystal display screen strength detection pressure-applying device according to claim 7, characterized in that: The inner wall of the recess of the test bench (2) is provided with a linkage cleaning assembly (12), and the linkage cleaning assembly (12) comprises a fixing pin (1201) and a rocker arm (1202), wherein the fixing pin (1201) is fixedly mounted on the inner wall of the recess of the test bench (2), and the rocker arm (1202) is rotatably mounted inside the fixing pin (1201).

9. The liquid crystal display screen strength detection pressure-applying device according to claim 8, characterized in that: The linkage cleaning component (12) further comprises a lint-removing roller (1203) and a flange (1204); a lint-removing roller (1203) made of a flexible material is rotatably mounted between the ends of the rocker arm (1202), and a flange (1204) is integrally fixed to the middle of the rocker arm (1202).

10. The liquid crystal display screen strength detection pressure-applying device according to claim 9, characterized in that: The linkage cleaning assembly (12) further comprises a connecting rod (1205) and a tension spring (1206); the connecting rod (1205) is fixedly connected between the flanges (1204), the connecting rod (1205) is abutted against the trigger rod (107), and the connecting rod (1205) is elastically connected to the inner wall of the recess of the test bench (2) via the tension spring (1206).

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