Compression resistance detection device for touch screen production and detection method thereof

Abstract

The invention relates to a pressure resistance detection device for touch screen production, which comprises two vertical plates, the upper ends of the two vertical plates are fixedly connected with a transverse plate, a lifting plate is arranged between the two vertical plates, and a lifting mechanism for lifting the lifting plate is arranged between the two vertical plates; the detection mechanism is used for carrying out compression resistance detection on the touch screen, the detection mechanism comprises a U-shaped column fixedly connected with the lower end of the lifting plate, rotating plates are fixedly connected with the lower ends of two arms of the U-shaped column, a switching plate is rotationally connected between the rotating plates, and a limiting mechanism used for limiting the switching plate is arranged on the U-shaped column. A rigid pressing head and an air bag pressing head are installed on the switching plate, a pneumatic pump is fixedly installed at the lower end of the lifting plate, and the pneumatic pump is communicated with the air bag pressing head. According to the invention, the uniformity of pressure resistance detection on the touch screen is high, the test result is accurate, the test precision is high, the lateral pressure detection accords with reality, and the detection result is accurate.

Description

Technical Field

[0001] The invention relates to the field of pressure testing equipment, in particular to a pressure resistance detection device for touch screen production and a detection method thereof. Background Art

[0002] A touch screen, also known as a "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. When a graphic button on the screen is touched, the tactile feedback system on the screen can drive various connection devices according to a pre-programmed program. It can be used to replace mechanical button panels and create vivid audio and video effects through the LCD display.

[0003] Screen compression test is an important part of electronic product testing. It mainly aims at evaluating the bearing capacity and stability of the screen when subjected to external pressure. This test not only focuses on the compression performance of the external screen, but also involves the compression performance of the internal screen. In terms of the external screen, since the touch screen directly interacts with the user, its compression performance is crucial. The external screen needs to be able to withstand various pressures in daily use, such as finger pressing, object placement, etc., without damaging or affecting the touch function. In terms of the internal screen, although the user does not directly contact it, its compression performance is equally important, because the internal screen is a key component for displaying images. If its compression performance is insufficient, it may cause display abnormalities, light leakage and other problems when subjected to external pressure. In addition, the internal screen also needs to work closely with the external screen to ensure the overall stability and reliability of the screen.

[0004] Current pressure testing equipment usually tests the touch screen through a hard test pressure head. During the test, it cannot be guaranteed that the overall force on the touch screen is uniform. The test results are inaccurate and have low precision. Moreover, when performing an inclined test, the actual situation is that the extruded object will slide along the surface of the touch screen. However, existing pressure testing equipment does not have the function of sliding test. The results of the inclined test are not in line with reality and the accuracy of the test results is low.

[0005] Therefore, based on the above problems, we invented a pressure resistance detection device and a detection method for touch screen production. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a pressure resistance detection device and a detection method for touch screen production to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a pressure resistance detection device for touch screen production, comprising:

[0008] Two vertical plates, the upper ends of the two vertical plates are fixedly connected with a horizontal plate, a lifting plate is provided between the two vertical plates, and a lifting mechanism for lifting the lifting plate is provided between the two vertical plates;

[0009] A detection mechanism, used for performing pressure resistance detection on the touch screen, the detection mechanism includes a U-shaped column fixedly connected to the lower end of the lifting plate, the lower ends of the two arms of the U-shaped column are fixedly connected to the rotating plate, a switching plate is rotatably connected between the rotating plates, a limiting mechanism for limiting the switching plate is provided on the U-shaped column, a rigid pressing head and an airbag pressing head are installed on the switching plate, an air pressure pump is fixedly installed on the lower end of the lifting plate, and the air pressure pump is connected to the airbag pressing head;

[0010] A fixing mechanism is used to fix the touch screen, the fixing mechanism includes a bottom plate, the lower ends of the two vertical plates are fixedly connected to the bottom plate, a first U-shaped plate is arranged above the bottom plate, the lower end of the first U-shaped plate is rotatably connected to a fixing plate, the lower end of the fixing plate is fixedly connected to the bottom plate, a telescopic rod is rotatably installed on the side wall of the fixing plate, the upper end of the telescopic rod is rotatably connected to the lower end of the first U-shaped plate, a second U-shaped plate is arranged inside the first U-shaped plate, the outer sides of the two arms of the second U-shaped plate are fixedly connected to fixing shafts, and the ends of the two fixing shafts away from the second U-shaped plate are connected to the first U The inner wall of the U-shaped plate is rotatably connected, the first U-shaped plate is provided with a deflection mechanism for deflecting the second U-shaped plate, the second U-shaped plate is slidably connected with a third U-shaped plate, the second U-shaped plate is provided with a moving mechanism for moving the third U-shaped plate, the third U-shaped plate is slidably connected with a buffer plate, a plurality of buffer members are provided between the third U-shaped plate and the buffer plate, a return plate is fixedly connected above the buffer plate, the return plate is provided with an adsorption mechanism for adsorbing the touch screen, a control board is installed on the buffer board, and a plurality of resistance strain gauges are connected to the control board.

[0011] Furthermore, the lifting mechanism includes two grooves respectively arranged on the two vertical plates, and threaded rods are rotatably connected in the two grooves, and lifting blocks are threadedly sleeved on the outsides of the two threaded rods, and the two lifting blocks are fixedly connected to the lifting plate. A cavity is provided in the horizontal plate, and the upper ends of the two threaded rods are rotatably extended into the cavity and are connected through a transmission mechanism. A first motor is fixedly connected to the upper end of the horizontal plate, and the drive shaft of the first motor rotates through the horizontal plate and is coaxially fixedly connected to one of the threaded rods.

[0012] Furthermore, the transmission mechanism includes two pulleys, the two pulleys are coaxially fixedly connected to two threaded rods respectively, and the two pulleys are connected through a synchronous belt transmission.

[0013] Furthermore, the limiting mechanism includes a fixing ring and a limiting ring which are sleeved outside the U-shaped column, the fixing ring is fixedly connected to the U-shaped column, the limiting ring is slidably connected to the U-shaped column, a limiting telescopic rod is fixedly connected between the limiting ring and the fixing ring, a limiting spring is provided on the outer sleeve of the limiting telescopic rod, and both ends of the limiting spring are respectively fixedly connected to the limiting ring and the fixing ring.

[0014] Furthermore, the deflection mechanism includes a second motor fixedly mounted on the outer wall of the first U-shaped plate, a driving shaft of the second motor being coaxially fixedly connected to a first gear, one end of the fixed shaft rotatingly passes through the first U-shaped plate and being coaxially fixedly connected to a second gear, and the first gear is meshingly connected to the second gear.

[0015] Furthermore, the buffer component includes a buffer telescopic rod and a buffer spring, the buffer spring is sleeved outside the buffer telescopic rod, and both ends of the buffer telescopic rod and the buffer spring are fixedly connected to the third U-shaped plate and the buffer plate respectively.

[0016] Furthermore, the adsorption mechanism includes a plurality of through holes penetrating the return plate, and a plurality of through hole arrays are distributed on the return plate, and suction cups are installed in the through holes.

[0017] Furthermore, the plurality of resistance strain gauges are distributed on the control board in a uniform array.

[0018] Furthermore, the moving mechanism includes a moving groove arranged on the inner side wall of the second U-shaped plate, a bidirectional screw being rotatably connected in the moving groove, two threaded blocks being provided on the outer thread sleeve of the bidirectional screw, both of the two threaded blocks being slidably connected to the inner side wall of the moving groove, a third motor being fixedly installed in the moving groove, a driving shaft of the third motor being coaxially fixedly connected to the bidirectional screw, deflection plates being rotatably connected to the outside of the two threaded blocks, and both ends of the two deflection plates away from the threaded blocks being rotatably connected to the third U-shaped plate.

[0019] A method for detecting pressure resistance of a touch screen in production, comprising the following steps:

[0020] S1. Place the touch screen: Place the touch screen on the back plate, fix it with a suction cup, and attach the resistance strain gauge to the back of the touch screen;

[0021] S2. Test the pressure resistance of the touch screen: turn the airbag pressing head to the bottom, press the touch screen with the airbag pressing head, record the change data of the resistance strain gauge, and obtain the test result of the pressure resistance of the touch screen;

[0022] S3. Test the point compression of the touch screen: turn the rigid pressing head to the bottom, press the touch screen with the rigid pressing head, record the change data of the resistance strain gauge, and obtain the point compression test result of the touch screen;

[0023] S4. Tilt and compression test of the touch screen: adjust the placement angle of the touch screen, press the touch screen with a rigid pressing head, record the change data of the resistance strain gauge and the moving distance of the rigid pressing head on the touch screen, and observe the scratch status to obtain the tilt and compression test result of the touch screen.

[0024] Compared with the prior art, the present invention provides a pressure resistance detection device and a detection method for touch screen production, which have the following beneficial effects:

[0025] 1. A pressure resistance testing device for touch screen production is provided with a testing mechanism. When the airbag pressing head faces downward, air is supplied to the airbag through an air pressure pump to inflate the airbag. At this time, the two threaded rods are driven to rotate by a first motor. The two threaded rods drive the lifting plate to rise and fall through two lifting blocks. The lifting plate drives the airbag pressing head to rise and fall. The touch screen can be subjected to pressure resistance testing. Moreover, since the pressure of each part of the gas is constant, when the touch screen is tested, the pressure of each part where the airbag just contacts the touch screen can be the same. This ensures that the overall force of the touch screen is uniform during the pressure resistance test, the test result is accurate, and the test accuracy is high.

[0026] 2. This kind of pressure resistance testing device for touch screen production is provided with a fixing mechanism. Through the extension and retraction of the telescopic rod, the telescopic rod drives the first U-shaped plate to tilt left and right. The first U-shaped plate can drive the touch screen placed on the return plate to tilt left and right. The second motor drives the fixed shaft to rotate. The fixed shaft drives the second U-shaped plate to rotate. The second U-shaped plate drives the touch screen placed on the return plate to tilt forward and backward. The inclination direction of the touch screen can be adjusted, and then the rigid pressing head is adjusted downward and moved downward. At this time, the touch screen can be pressed. During the pressing process, the buffer telescopic rod and the buffer spring contract, and the rigid pressing head can slide on the touch screen while pressing the touch screen. The pressure and scratches generated when the touch screen is subjected to lateral pressure can be intuitively observed. The lateral pressure resistance test result of the touch screen is more in line with reality and the test result is accurate.

[0027] The present invention has high uniformity in the pressure resistance test on the touch screen, accurate test results, high test precision, and the lateral pressure test is in line with reality, and the test results are accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural perspective view of the lifting mechanism in the present invention;

[0030] Figure 3 It is a front structural schematic diagram of the detection mechanism in the present invention;

[0031] Figure 4 It is a side structural schematic diagram of the detection mechanism in the present invention;

[0032] Figure 5 It is a front structural schematic diagram of the fixing mechanism in the present invention;

[0033] Figure 6 It is a top structural perspective view of the fixing mechanism in the present invention;

[0034] Figure 7 It is a schematic diagram of the internal structure of the first U-shaped plate in the present invention;

[0035] Figure 8 It is a structural schematic diagram of the return plate in the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the control board and the resistance strain gauge in the present invention.

[0037] In the figure: 1, vertical plate; 2, lifting plate; 3, horizontal plate; 4, lifting mechanism; 5, detection mechanism; 6, U-shaped column; 7, rotating plate; 8, switching plate; 9, limiting mechanism; 10, rigid pressing head; 11, airbag pressing head; 12, air pressure pump; 13, fixing mechanism; 14, bottom plate; 15, first U-shaped plate; 16, fixed plate; 17, telescopic rod; 18, second U-shaped plate; 19, fixed shaft; 20, deflection mechanism; 21, third U-shaped plate; 22, moving mechanism; 23, buffer plate; 24, buffer member; 25, return plate; 26, adsorption Mechanism; 27. Control board; 28. Resistance strain gauge; 29. ​​Groove; 30. Threaded rod; 31. Lifting block; 32. Cavity; 33. Transmission mechanism; 34. First motor; 35. Pulley; 36. Fixing ring; 37. Limiting ring; 38. Limiting spring; 39. Second motor; 40. First gear; 41. Deflection plate; 42. Second gear; 43. Buffer telescopic rod; 44. Buffer spring; 45. Through hole; 46. Suction cup; 47. Moving slot; 48. Bidirectional screw; 49. Threaded block; 50. Third motor; 51. Limit telescopic rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a pressure resistance detection device and a detection method for touch screen production.

[0040] like Figure 1-9 As shown, a pressure resistance detection device for touch screen production includes:

[0041] The two vertical plates 1 are fixedly connected with a horizontal plate 3 at the upper ends of the two vertical plates 1, a lifting plate 2 is provided between the two vertical plates 1, and a lifting mechanism 4 for lifting the lifting plate 2 is provided between the two vertical plates 1. It should be noted that the lifting mechanism 4 includes two grooves 29 respectively arranged on the two vertical plates 1, threaded rods 30 are rotatably connected in the two grooves 29, and lifting blocks 31 are threadedly sleeved on the outer sides of the two threaded rods 30, and the two lifting blocks 31 are fixedly connected to the lifting plate 2, and a cavity 32 is provided in the horizontal plate 3. The upper ends of the two threaded rods 30 are rotatably extended into the cavity 32 and are connected by transmission mechanism 33. It should be noted that the transmission mechanism 33 includes two pulleys 35, and the two pulleys 35 are coaxially fixedly connected to the two threaded rods 30 respectively, and the two pulleys 35 are connected by synchronous belt transmission. The upper end of the horizontal plate 3 is fixedly connected with a first motor 34, and the driving shaft of the first motor 34 rotates through the horizontal plate 3 and is coaxially fixedly connected to one of the threaded rods 30.

[0042] Through the above technical features, when the entire touch screen is subjected to a pressure resistance test, the two threaded rods 30 are driven to rotate by the first motor 34, and the two threaded rods 30 drive the lifting plate 2 to rise and fall through the two lifting blocks 31, and the lifting plate 2 drives the pressing head to rise and fall, so that the touch screen can be subjected to a pressure resistance test.

[0043] In order to perform pressure resistance detection on the touch screen, a detection mechanism 5 is set up for performing pressure resistance detection on the touch screen. The detection mechanism 5 includes a U-shaped column 6 fixedly connected to the lower end of the lifting plate 2, and the lower ends of the two arms of the U-shaped column 6 are fixedly connected to the rotating plate 7, and the switching plate 8 is rotatably connected between the rotating plates 7. The U-shaped column 6 is provided with a limiting mechanism 9 for limiting the switching plate 8. Further, the limiting mechanism 9 includes a fixed ring 36 and a limiting ring 37 sleeved outside the U-shaped column 6, the fixed ring 36 is fixedly connected to the U-shaped column 6, the limiting ring 37 is slidably connected to the U-shaped column 6, and a limiting telescopic rod 5 is fixedly connected between the limiting ring 37 and the fixed ring 36. 1. A limit spring 38 is provided on the outer sleeve of the limit telescopic rod 51. The two ends of the limit spring 38 are fixedly connected to the limit ring 37 and the fixed ring 36 respectively. A rigid pressing head 10 and an airbag pressing head 11 are installed on the switching plate 8. It should be noted that the rigid pressing head 10 is composed of a main pressing head and multiple groups of circular rings. The multiple groups of circular rings are sequentially slidably sleeved on the main pressing head. A fixed ring is provided on the outer fixed sleeve of the main pressing head. The multiple groups of circular rings and the fixed rings are fixedly connected through a micro-telescopic rod. The main pressing head can adjust the area of ​​the main pressing head through the multiple groups of circular rings. An air pressure pump 12 is fixedly installed at the lower end of the lifting plate 2. The air pressure pump 12 is connected to the airbag pressing head 11;

[0044] Through the above-mentioned technical features, when the airbag pressing head 11 is used to perform a pressure test on the touch screen, the switching plate 8 is rotated, and the switching plate 8 drives the airbag pressing head 11 and the rigid pressing head 10 to rotate, so that the airbag pressing head 11 is facing downward. When the airbag pressing head 11 is facing downward, the airbag on the airbag pressing head 11 is supplied with air through the air pressure pump 12 to inflate the airbag. At this time, the airbag pressing head 11 is pressed down, and the pressure resistance test of the touch screen can be performed; when the rigid pressing head 11 is used to perform a pressure test on the touch screen, the switching plate 8 is rotated, and the switching plate 8 drives the airbag pressing head 11 and the rigid pressing head 10 to rotate, so that the rigid pressing head 10 is facing downward. When the rigid pressing head 10 is facing downward, the rigid pressing head 10 is pressed down, and the pressure resistance test of the touch screen can be performed.

[0045] In order to fix the touch screen and adjust its angle, a fixing mechanism 13 is provided for fixing the touch screen. The fixing mechanism 13 includes a bottom plate 14. The lower ends of the two vertical plates 1 are fixedly connected to the bottom plate 14. A first U-shaped plate 15 is provided above the bottom plate 14. A fixing plate 16 is rotatably connected to the lower end of the first U-shaped plate 15. The lower end of the fixing plate 16 is fixedly connected to the bottom plate 14. A telescopic rod 17 is rotatably installed on the side wall of the fixing plate 16. The upper end of the telescopic rod 17 is rotatably connected to the lower end of the first U-shaped plate 15. A second U-shaped plate 18 is provided in the first U-shaped plate 15. The outer sides of the two arms of the second U-shaped plate 18 are fixedly connected to fixing shafts 19. The ends of the two fixing shafts 19 away from the second U-shaped plate 18 are rotatably connected to the inner side wall of the first U-shaped plate 15. The first U-shaped plate 15 is provided with a fixing shaft 19. As for the deflection mechanism 20 for deflecting the second U-shaped plate 18, it should be noted that the deflection mechanism 20 includes a second motor 39 fixedly installed on the outer side wall of the first U-shaped plate 15, and the driving shaft of the second motor 39 is coaxially fixedly connected with the first gear 40, one end of the fixed shaft 19 rotates through the first U-shaped plate 15 and is coaxially fixedly connected with the second gear 42, the first gear 40 is meshingly connected with the second gear 42, and the third U-shaped plate 21 is slidably connected in the second U-shaped plate 18, and the second U-shaped plate 18 is provided with a moving mechanism 22 for moving the third U-shaped plate 21. It should be noted that the moving mechanism 22 includes a moving groove 47 arranged on the inner side wall of the second U-shaped plate 18, and a bidirectional screw 48 is rotatably connected in the moving groove 47, and the external thread sleeve of the bidirectional screw 48 is provided with two threaded blocks 49.

[0046] In the present invention, the two threaded blocks 49 are both slidably connected to the inner side wall of the movable groove 47, a third motor 50 is fixedly installed in the movable groove 47, the driving shaft of the third motor 50 is coaxially fixedly connected to the bidirectional screw 48, the two threaded blocks 49 are both rotatably connected to the outside of the two threaded blocks 49, the ends of the two deflection plates 41 away from the threaded blocks 49 are both rotatably connected to the third U-shaped plate 21, the third U-shaped plate 21 is slidably connected to the buffer plate 23, a plurality of buffer members 24 are provided between the third U-shaped plate 21 and the buffer plate 23, it should be noted that the buffer member 24 includes a buffer telescopic rod 43 and a buffer spring 44, the buffer spring 44 is sleeved outside the buffer telescopic rod 43, the two ends of the buffer telescopic rod 43 and the buffer spring 44 are respectively connected to the third U-shaped plate 21 and the buffer plate 23 is fixedly connected, a return plate 25 is fixedly connected above the buffer plate 23, and an adsorption mechanism 26 for adsorbing the touch screen is provided on the return plate 25. It is worth mentioning that the adsorption mechanism 26 includes a plurality of through holes 45 set through the return plate 25, and a plurality of through holes 45 are arranged in an array on the return plate 25, and suction cups 46 are installed in the through holes 45. A control board 27 is installed on the buffer plate 23, and a plurality of resistance strain gauges 28 are connected to the control board 27. It should be noted that the plurality of resistance strain gauges 28 are evenly distributed in an array on the control board 27. It should be noted that the control board 27 is a central control circuit board for controlling the resistance strain gauges 28, and is used to collect data collected by the resistance strain gauges 28.

[0047] Through the above technical features, when the touch screen is tilted forward and backward, the telescopic rod 16 is extended and retracted, so that the telescopic rod 16 drives the first U-shaped plate 15 to tilt left and right, and the first U-shaped plate 15 can drive the touch screen placed on the return plate 25 to tilt left and right; when the touch screen is tilted forward and backward, the first gear 40 is driven to rotate by the second motor 39, and the first gear 40 drives the fixed shaft 19 to rotate through the second gear 42, and the fixed shaft 19 drives the second U-shaped plate 18 to rotate, and the second U-shaped plate 18 drives the touch screen placed on the return plate 25 to tilt forward and backward; when the touch screen is subjected to tilt pressure resistance measurement, the rigid pressing head 10 is adjusted downward and moved downward, and the touch screen can be pressed at this time. During the pressing process, the buffer telescopic rod 43 and the buffer spring 44 contract, and the rigid pressing head 10 can slide on the touch screen while pressing the touch screen, and the pressure and scratches generated when the touch screen is subjected to lateral pressure can be intuitively observed.

[0048] A method for detecting pressure resistance of a touch screen in production, comprising the following steps:

[0049] S1. Place the touch screen: Place the touch screen on the return plate 25, fix it by suction using the suction cup 46, and attach the resistance strain gauge 28 to the back of the touch screen;

[0050] S2. Test the pressure resistance of the touch screen: turn the airbag pressing head 11 to the bottom, perform pressure test on the touch screen through the airbag pressing head 11, record the change data of the resistance strain gauge 28, and obtain the test result of the pressure resistance of the touch screen;

[0051] S3, test the point compression of the touch screen: turn the rigid pressing head 10 to the bottom, perform a pressing test on the touch screen through the rigid pressing head 1, record the change data of the resistance strain gauge 28, and obtain the point compression test result of the touch screen;

[0052] S4. Testing the tilt and compression resistance of the touch screen: adjust the placement angle of the touch screen, press the touch screen with the rigid pressing head 10, record the change data of the resistance strain gauge 28 and the moving distance of the rigid pressing head 10 on the touch screen, and observe the scratch status to obtain the tilt and compression resistance test result of the touch screen.

[0053] Working principle:

[0054] 1) Fixing the touch screen: Place the touch screen on the return plate 25, fix it by suction using the suction cup 46, and attach the resistance strain gauge 28 to the back of the touch screen;

[0055] 2) Test the pressure resistance of the touch screen: the airbag pressing head 11 is rotated to the bottom, and then the two threaded rods 30 are driven to rotate by the first motor 34. The two threaded rods 30 drive the lifting plate 2 to rise and fall through the two lifting blocks 31. The lifting plate 2 drives the airbag pressing head 11 to rise and fall. The touch screen can be tested by the airbag pressing head 11, and the change data of the resistance strain gauge 28 is recorded to obtain the test result of the pressure resistance of the touch screen;

[0056] 3) Test the point compression of the touch screen: rotate the rigid pressing head 10 to the bottom, and then drive the two threaded rods 30 to rotate through the first motor 34. The two threaded rods 30 drive the lifting plate 2 to rise and fall through the two lifting blocks 31. The lifting plate 2 drives the rigid pressing head 10 to rise and fall. The rigid pressing head 10 can be used to perform pressure test on the touch screen, record the change data of the resistance strain gauge 28, and obtain the point compression test result of the touch screen;

[0057] 4) Adjusting the angle of the touch screen: When the touch screen is tilted forward or backward, the telescopic rod 16 is extended and retracted, so that the first U-shaped plate 15 is driven to tilt left or right, and the first U-shaped plate 15 can drive the touch screen placed on the return plate 25 to tilt left or right; when the touch screen is tilted forward or backward, the first gear 40 is driven to rotate by the second motor 39, and the first gear 40 drives the fixed shaft 19 to rotate through the second gear 42, and the fixed shaft 19 drives the second U-shaped plate 18 to rotate, and the second U-shaped plate 18 drives the touch screen placed on the return plate 25 to tilt forward or backward.

[0058] 5) Testing the tilt and compression resistance of the touch screen: Press the touch screen with the rigid pressing head 10, record the change data of the resistance strain gauge 28 and the moving distance of the rigid pressing head 10 on the touch screen, and observe the scratch status to obtain the tilt and compression resistance test result of the touch screen.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compression testing device for touch screen production, characterized in that: include, Two vertical plates (1), the upper ends of the two vertical plates (1) being fixedly connected to a horizontal plate (3), a lifting plate (2) being provided between the two vertical plates (1), and a lifting mechanism (4) for lifting the lifting plate (2) being provided between the two vertical plates (1); A detection mechanism (5) is used to perform pressure resistance detection on the touch screen, the detection mechanism (5) comprises a U-shaped column (6) fixedly connected to the lower end of the lifting plate (2), the lower ends of the two arms of the U-shaped column (6) are fixedly connected to a rotating plate (7), a switching plate (8) is rotatably connected between the rotating plates (7), a limiting mechanism (9) for limiting the switching plate (8) is provided on the U-shaped column (6), a rigid pressing head (10) and an airbag pressing head (11) are installed on the switching plate (8), and an air pressure pump (12) is fixedly installed at the lower end of the lifting plate (2), and the air pressure pump (12) is connected to the airbag pressing head (11); A fixing mechanism (13) is used to fix the touch screen, the fixing mechanism (13) comprising a bottom plate (14), the lower ends of the two vertical plates (1) are fixedly connected to the bottom plate (14), a first U-shaped plate (15) is arranged above the bottom plate (14), the lower end of the first U-shaped plate (15) is rotatably connected to a fixing plate (16), the lower end of the fixing plate (16) is fixedly connected to the bottom plate (14), a telescopic rod (17) is rotatably mounted on the side wall of the fixing plate (16), the upper end of the telescopic rod (17) is rotatably connected to the lower end of the first U-shaped plate (15), a second U-shaped plate (18) is arranged inside the first U-shaped plate (15), the outer sides of the two arms of the second U-shaped plate (18) are fixedly connected to fixing shafts (19), and the ends of the two fixing shafts (19) away from the second U-shaped plate (18) are connected to the first U-shaped plate (15) The inner wall is rotatably connected, the first U-shaped plate (15) is provided with a deflection mechanism (20) for deflecting the second U-shaped plate (18), the second U-shaped plate (18) is slidably connected with a third U-shaped plate (21), the second U-shaped plate (18) is provided with a moving mechanism (22) for moving the third U-shaped plate (21), the third U-shaped plate (21) is slidably connected with a buffer plate (23), a plurality of buffer members (24) are provided between the third U-shaped plate (21) and the buffer plate (23), a return plate (25) is fixedly connected above the buffer plate (23), the return plate (25) is provided with an adsorption mechanism (26) for adsorbing the touch screen, a control board (27) is installed on the buffer plate (23), and a plurality of resistance strain gauges (28) are connected to the control board (27).

2. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The lifting mechanism (4) comprises two grooves (29) respectively arranged on the two vertical plates (1), the two grooves (29) are rotatably connected with threaded rods (30), the two threaded rods (30) are threadedly sleeved with lifting blocks (31) on the outside, the two lifting blocks (31) are fixedly connected to the lifting plate (2), the transverse plate (3) is provided with a cavity (32), the upper ends of the two threaded rods (30) are rotatably extended into the cavity (32) and are transmission-connected through a transmission mechanism (33), the upper end of the transverse plate (3) is fixedly connected with a first motor (34), the driving shaft of the first motor (34) is rotatably passed through the transverse plate (3) and is coaxially fixedly connected to one of the threaded rods (30).

3. A pressure resistance detection device for touch screen production according to claim 2, characterized in that: The transmission mechanism (33) comprises two pulleys (35), the two pulleys (35) are respectively coaxially fixedly connected to two threaded rods (30), and the two pulleys (35) are connected via a synchronous belt transmission.

4. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The limiting mechanism (9) comprises a fixing ring (36) and a limiting ring (37) which are sleeved outside the U-shaped column (6); the fixing ring (36) is fixedly connected to the U-shaped column (6); the limiting ring (37) is slidably connected to the U-shaped column (6); a limiting telescopic rod (51) is fixedly connected between the limiting ring (37) and the fixing ring (36); a limiting spring (38) is provided on the outer sleeve of the limiting telescopic rod (51); and two ends of the limiting spring (38) are respectively fixedly connected to the limiting ring (37) and the fixing ring (36).

5. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The deflection mechanism (20) comprises a second motor (39) fixedly mounted on the outer side wall of the first U-shaped plate (15); a driving shaft of the second motor (39) is coaxially fixedly connected to a first gear (40); one end of the fixed shaft (19) rotates through the first U-shaped plate (15) and is coaxially fixedly connected to a second gear (42); the first gear (40) is meshingly connected to the second gear (42).

6. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The buffer member (24) comprises a buffer telescopic rod (43) and a buffer spring (44), wherein the buffer spring (44) is sleeved outside the buffer telescopic rod (43), and both ends of the buffer telescopic rod (43) and the buffer spring (44) are respectively fixedly connected to the third U-shaped plate (21) and the buffer plate (23).

7. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The adsorption mechanism (26) comprises a plurality of through holes (45) which are arranged to penetrate the return plate (25); the plurality of through holes (45) are arranged in an array and distributed on the return plate (25); and suction cups (46) are installed in each of the through holes (45).

8. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The plurality of resistance strain gauges (28) are distributed on the control board (27) in a uniform array.

9. The pressure resistance detection device for touch screen production according to claim 1, characterized in that: The moving mechanism (22) comprises a moving groove (47) arranged on the inner side wall of the second U-shaped plate (18), a bidirectional screw (48) being rotatably connected in the moving groove (47), two threaded blocks (49) being externally threadedly sleeved on the bidirectional screw (48), the two threaded blocks (49) being slidably connected to the inner side wall of the moving groove (47), a third motor (50) being fixedly installed in the moving groove (47), a driving shaft of the third motor (50) being coaxially fixedly connected to the bidirectional screw (48), the two threaded blocks (49) being externally rotatably connected to a deflection plate (41), and the ends of the two deflection plates (41) away from the threaded blocks (49) being rotatably connected to the third U-shaped plate (21).

10. A method for testing the pressure resistance of touch screens for production, used in a device for testing the pressure resistance of touch screens for production as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Placing the touch screen: placing the touch screen on the return plate (25), fixing it by suction using a suction cup (46), and attaching the resistance strain gauge (28) to the back of the touch screen; S2. Testing the pressure resistance of the touch screen: the airbag pressing head (11) is turned to the bottom, and the touch screen is tested by pressing the airbag pressing head (11), and the change data of the resistance strain gauge (28) is recorded to obtain the test result of the pressure resistance of the touch screen; S3, testing the point compression of the touch screen: the rigid pressing head (10) is turned to the bottom, the touch screen is tested by pressing the rigid pressing head 1, and the change data of the resistance strain gauge (28) is recorded to obtain the point compression test result of the touch screen; S4. Testing the tilt resistance of the touch screen: adjusting the placement angle of the touch screen, pressing the touch screen with a rigid pressing head (10), recording the change data of the resistance strain gauge (28) and the moving distance of the rigid pressing head (10) on the touch screen, and observing the scratch state to obtain the tilt resistance of the touch screen.

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