Detection jig for display screen

Abstract

The invention discloses a detection jig for a display screen, and belongs to the technical field of display screen detection, the detection jig comprises a pressure measurement platform and a jig seat for placing a liquid crystal screen and a touch outer screen, a piston extrusion cavity is formed in the jig seat, and a pressurization assembly is arranged in the piston extrusion cavity. Through the arrangement of the damping assembly and the pressure measurement platform, the damping assembly can be utilized to buffer and support the liquid crystal screen before the liquid crystal screen is attached and during pressure-bearing detection, so that partial kinetic energy of the liquid crystal screen when the liquid crystal screen is pressed is conveniently absorbed, rigid contact between the upper end face and the lower end face of the liquid crystal screen when the liquid crystal screen is pressed is avoided, and the pressure-bearing state of the liquid crystal screen during subsequent forward pressing is simulated; meanwhile, through the arrangement of the electromagnetic plate and the thin towel belt, the Lorentz force formed by the electromagnetic plate can be used for transferring electrostatic charges to one side of the screen, an electrostatic field is located below the thin towel belt on one side, and whether static electricity exists on the screen in the whole machining process or not is rapidly detected through attraction of the electrostatic field to the wet thin towel belt.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen detection, and in particular to a detection jig for display screens. Background Art

[0002] A fixture is a tool used to assist in controlling position or motion, and is widely used in the fields of woodworking, ironwork, fitter, machinery, and electronic control. It is mainly divided into three categories: process assembly fixtures, project test fixtures, and circuit board test fixtures.

[0003] During the production of touch screens, a laminating jig is used. Currently, when using the laminating jig, the LCD screen is first placed in the jig, and then the release films on the LCD screen and the touch screen need to be torn off separately. However, static electricity is easily generated during the manual tearing of the release films. At the same time, during the laminating process, since the positioning groove of the jig is exactly the same size as the touch screen, the two corners of one side are usually used as a reference, and then the side of the touch screen with OCA (optical clear adhesive) is gradually pressed obliquely to fit. This causes the initial contact area of ​​the LCD screen and the touch screen adhesive surface to have a slight offset after complete lamination, making the adhesive The surface is prone to friction static electricity. Since the touch screen usually uses capacitive technology and is positioned by an electric field, if there is static electricity before and after the screen is bonded, the static electricity will cause the touch screen to "drift" in subsequent use. In severe cases, it may even cause permanent damage to the screen. In addition, the LCD screen and the touch outer screen will be positively pressed after bonding. During the positive pressing process, the LCD screen will be located below the touch outer screen to bear pressure, which requires the LCD screen to have a certain pressure-bearing strength. If the pressure-bearing strength of the LCD screen is insufficient after bonding, it will cause a waste of overall production materials. Therefore, a detection fixture for display screens is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that static electricity is easily generated during the manual tearing off process of the release film in the prior art. The static electricity will cause the touch screen to "drift" during subsequent use, and in severe cases may even cause permanent damage to the screen. In addition, the LCD screen and the touch outer screen will be positively pressed after bonding. During the positive pressing process, the LCD screen will be located below the touch outer screen to bear pressure, which requires the LCD screen to have a certain pressure-bearing strength. If the pressure-bearing strength of the LCD screen is insufficient after bonding, it will cause a waste of overall production materials. A detection fixture for a display screen is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A detection jig for a display screen, comprising a pressure measurement platform and a jig seat for placing a liquid crystal screen and a touch screen, wherein a piston extrusion chamber is provided in the jig seat, a pressurizing component is provided in the piston extrusion chamber, a transition chamber is provided in communication with the jig seat above the piston extrusion chamber, a plurality of receiving grooves are provided in communication with the jig seat above the transition chamber, a buffer cylinder is connected to the inner side wall of the receiving groove, and a damping component for buffering the pressure of the liquid crystal screen is provided in the buffer cylinder; The left and right side walls of the fixture seat are fixedly connected with electromagnetic plates, the pressure measuring platform is provided with two conversion holes, and conversion seats are arranged above the two conversion holes. The bottom end of the conversion seat is fixedly connected with a sealing plate, and the top end of the conversion seat is connected with a charge direction finding component for testing static electricity through a fixed seat.

[0006] Preferably, the top of the jig seat is fixedly connected to a mounting seat via two support rods, the mounting seat is fixedly connected to the top of the pressure measuring platform via a hydraulic cylinder, and the jig seat is provided with an inner limit groove and an outer limit groove for placing the LCD screen and the touch screen respectively.

[0007] Preferably, the pressurizing assembly consists of a piston push rod and a hydraulic plate, the end of the piston push rod is fixedly connected to the end face of the hydraulic plate, a return spring is sleeved on the outer wall of the piston push rod, the side wall of the hydraulic plate is slidably connected to the inner side wall of the piston extrusion chamber, and hydraulic oil is provided in the piston extrusion chamber.

[0008] Preferably, the piston extrusion chamber is connected to a plurality of receiving grooves through a transition chamber, the inner side wall of the receiving groove is fixedly connected to the outer side wall of the buffer cylinder, and the bottom end of the buffer cylinder is connected to the receiving groove.

[0009] Preferably, the damping assembly consists of a throttle plate and a top plate, the top of the throttle plate is fixedly connected to the bottom end of the top plate by a sliding rod, the sliding rod and the inner wall of the top end of the buffer tube are slidably connected, a damping spring is sleeved on the outer wall of the sliding rod, a plurality of arc-shaped throttle holes are opened on the throttle plate, and the top of the top plate is fixedly connected to a pressure seat plate.

[0010] Preferably, the conversion hole on the pressure measuring platform is adapted to the sealing plate, and two hydraulic push rods are fixedly connected to the top of the pressure measuring platform at both ends of the conversion hole, and the output end of the hydraulic push rod is fixedly connected to a fixed plate, and one side of the fixed plate is fixedly connected to a conversion motor through an assembly seat.

[0011] Preferably, the output end of the conversion motor is fixedly connected to the inner wall of the conversion seat through a driving shaft, the outer wall of the driving shaft is fixedly connected to a driving gear ring, and a driven gear is meshingly connected above the driving gear ring.

[0012] Preferably, the charge direction finding assembly consists of a storage tube and a thin towel belt, the top of the conversion seat is fixedly connected to the outer wall of the storage tube through a fixed seat, an outlet is provided on the upper side wall of the storage tube, the end face of the driven gear is rotatably connected to the inner end face of the storage tube through a rotating shaft, and the thin towel belt is wound on the outer wall of the rotating shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This solution can utilize the damping component and the pressure test platform to provide buffer support for the pressure test before the LCD screen is bonded, so as to absorb part of the kinetic energy of the LCD screen when it is under pressure, avoid rigid contact between the upper and lower end surfaces of the LCD screen when it is under pressure, simulate the pressure state of the LCD screen during subsequent forward pressing, ensure that the pressure strength of the LCD screen before bonding is qualified, and avoid unqualified LCD screens from entering the subsequent process.

[0014] 2. This solution uses the electromagnetic plate and the thin towel tape to transfer the electrostatic charge to one side of the screen using the Lorentz force formed by the electromagnetic plate, so that the electrostatic field is located under the thin towel tape on one side. By using the electrostatic field to attract the wet thin towel tape, it is possible to quickly detect whether there is static electricity on the screen during the entire processing process, thereby ensuring the safety of the entire screen bonding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a detection fixture for display screens proposed by the present invention; Figure 2 for Figure 1 The enlarged view of point A in the middle; Figure 3 An assembly diagram of a detection jig for a display screen proposed by the present invention; Figure 4 A partial cross-sectional view of a fixture seat in a detection fixture for a display screen proposed by the present invention; Figure 5 This is a schematic structural diagram of a damping component in a display screen detection fixture proposed by the present invention; Figure 6 This is a schematic diagram of the structure below the pressure measurement platform in a detection fixture for display screens proposed by the present invention; Figure 7 This is a structural schematic diagram of the positions of a driving gear ring and a driven gear in a detection fixture for a display screen proposed by the present invention; Figure 8 A partial cross-sectional view of a storage tube in a detection fixture for a display screen proposed by the present invention.

[0016] In the figure: 1. fixture seat; 2. pressure measuring platform; 3. mounting seat; 4. hydraulic cylinder; 5. piston push rod; 6. reset spring; 7. hydraulic plate; 8. piston extrusion chamber; 9. transition chamber; 10. storage groove; 11. buffer cylinder; 12. throttle plate; 13. slide rod; 14. damping spring; 15. top plate; 16. pressure seat plate; 17. electromagnetic plate; 18. hydraulic push rod; 19. conversion motor; 20. conversion seat; 21. sealing plate; 22. driving gear ring; 23. driven gear; 24. storage cylinder; 25. thin towel belt. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example, see Figures 1 to 8 A detection fixture for a display screen, comprising a pressure measurement platform 2 and a fixture seat 1 for placing a liquid crystal screen and a touch screen, a piston extrusion chamber 8 is provided in the fixture seat 1, a pressurizing component is provided in the piston extrusion chamber 8, a transition chamber 9 is provided above the piston extrusion chamber 8, a plurality of receiving grooves 10 are provided above the transition chamber 9, a buffer cylinder 11 is connected to the inner side wall of the receiving groove 10, and a damping component for buffering the pressure of the liquid crystal screen is provided in the buffer cylinder 11; Furthermore, the top of the fixture seat 1 is fixedly connected to a mounting seat 3 through two support rods, and the mounting seat 3 is fixedly connected to the top of the pressure measuring platform 2 through a hydraulic cylinder 4. The fixture seat 1 is respectively provided with an inner limit groove and an outer limit groove for placing the LCD screen and the touch screen. The pressurizing component is composed of a piston push rod 5 and a hydraulic plate 7. The end of the piston push rod 5 is fixedly connected to the end face of the hydraulic plate 7. A return spring 6 is sleeved on the outer wall of the piston push rod 5. The side wall of the hydraulic plate 7 is slidably connected to the inner wall of the piston extrusion chamber 8. Hydraulic oil is provided in the piston extrusion chamber 8. The piston extrusion chamber 8 is filled with hydraulic oil. The cavity 8 is connected with a plurality of receiving grooves 10 through a transition chamber 9, the inner side wall of the receiving groove 10 is fixedly connected with the outer side wall of the buffer cylinder 11, the bottom end of the buffer cylinder 11 is connected with the receiving groove 10, the damping assembly is composed of a throttle plate 12 and a top plate 15, the top end of the throttle plate 12 is fixedly connected with the bottom end of the top plate 15 through a slide rod 13, the slide rod 13 is slidably connected with the inner side wall of the top end of the buffer cylinder 11, a damping spring 14 is sleeved on the outer side wall of the slide rod 13, a plurality of arc throttle holes are opened on the throttle plate 12, and a pressure bearing seat plate 16 is fixedly connected with the top end of the top plate 15; It should be noted that: the LCD screen to be bonded is placed in the inner limit groove of the fixture seat 1, so that the LCD screen and the pressure seat plate 16 are in contact with each other, and then the hydraulic cylinder 4 on the mounting seat 3 is started, and the hydraulic cylinder 4 will drive the pressure measuring platform 2 to move down slowly. At this time, the sealing plate 21 is located in the adapted conversion hole, and the bottom end of the pressure measuring platform 2 is in a complete plane state. When the pressure measuring platform 2 presses the LCD screen, the LCD screen will transfer part of the extrusion to the pressure seat plate 16, and the pressure seat plate 16 will press the top plate 15. The top plate 15 is pressed and the throttle plate 12 is driven downward through the slide rod 13, and the throttle plate 12 is moved downward. The hydraulic oil under the plate 12 will be pressed upward through a plurality of arc-shaped throttle holes. The throttle holes block the flow of the hydraulic oil, thereby blocking the downward movement of the throttle plate 12, and further slowing down the downward movement of the pressure-bearing seat plate 16. This allows the LCD screen to receive gradually enhanced buffer support during the pressure-bearing strength test, which is more in line with the subsequent situation where the LCD screen and the touch screen are pressed together on a positive pressure plate with a certain elasticity. After the pressure test, the operator confirms whether the product is damaged through the observation and power-on test process consistent with the LCD screen after production. This is an existing process and technology, and will not be elaborated on here. After the LCD screen and the touch screen are bonded, the bonded screen is pre-bonded by the pressure measuring platform 2 to ensure that the bonded screen is not offset during the process of being taken out and transferred in the jig seat 1. When the bonded screen needs to be taken out later, the piston push rod 5 is pressed, and the hydraulic plate 7 presses the hydraulic oil in the piston extrusion chamber 8, and the hydraulic oil is synchronously pressed into a plurality of storage grooves 10 through the transition chamber 9, and then pressed into the buffer cylinder 11. By pressing the throttle plate 12, the top plate 15 is driven upward to press the bonded screen in the jig seat 1, so that the operator can quickly take the bonded screen out of the jig seat 1; The above benefits are as follows: the damping component can be used to provide buffer support for the pressure test before the LCD screen is bonded, so as to absorb part of the kinetic energy of the LCD screen when it is under pressure, avoid rigid contact between the upper and lower end surfaces of the LCD screen when it is under pressure, simulate the pressure state of the LCD screen during subsequent positive bonding, ensure that the pressure strength of the LCD screen before bonding is qualified, and avoid unqualified LCD screens from entering the subsequent process; The left and right side walls of the fixture seat 1 are fixedly connected with electromagnetic plates 17, the pressure measurement platform 2 is provided with two conversion holes, and conversion seats 20 are arranged above the two conversion holes. The bottom of the conversion seat 20 is fixedly connected with a sealing plate 21, and the top of the conversion seat 20 is connected with a charge direction finding component for testing static electricity through a fixed seat; Furthermore, the conversion hole on the pressure measuring platform 2 is adapted to the sealing plate 21, and two hydraulic push rods 18 are fixedly connected to the top of the pressure measuring platform 2 at both ends of the conversion hole, and the output end of the hydraulic push rod 18 is fixedly connected to a fixed plate, and one side of the fixed plate is fixedly connected to a conversion motor 19 through an assembly seat, and the output end of the conversion motor 19 is fixedly connected to the inner wall of the conversion seat 20 through a driving shaft, and the outer wall of the driving shaft is fixedly connected to a driving gear ring 22, and a driven gear 23 is meshed and connected above the driving gear ring 22. The charge direction finding component consists of a storage tube 24 and a thin towel belt 25, and the top of the conversion seat 20 is fixedly connected to the outer wall of the storage tube 24 through a fixed seat, and a discharge port is opened on the upper side wall of the storage tube 24, and the end face of the driven gear 23 is rotatably connected to the inner end face of the storage tube 24 through a rotating shaft, and the thin towel belt 25 is wound on the outer wall of the rotating shaft; It should be noted that: after the pressure-bearing test of the LCD screen is qualified, the operator tears off the release film on the LCD screen in the fixture seat 1, and then simultaneously energizes the electromagnetic plates 17 on both sides, so that the two electromagnetic plates 17 have opposite magnetic poles on the opposite sides, and the electromagnetic plates 17 on both sides will form magnetic fields in opposite directions. If the LCD screen with the release film torn off has static electricity, the static electricity will be concentrated on one side of the LCD screen under the action of the Lorentz force of the composite strong magnetic field formed by the two electromagnetic plates 17, so that there is an electrostatic field on one side of the LCD screen at this time, and at the same time, the hydraulic push rod 18 starts to move the conversion seat 20 upward, and the upward movement of the conversion seat 20 drives the sealing plate 21 to move out of the conversion hole, and then the conversion motor 19 starts to drive the conversion seat 20 to rotate 180° through the drive shaft, and rotates the storage tube 24 to the bottom. During the rotation of the drive shaft, the drive gear ring 22 will be driven to rotate synchronously, and the rotation of the drive gear ring 22 will The meshed driven gear 23 is driven to rotate, and the rotation of the driven gear 23 will drive the rotating shaft to rotate, so that the thin towel belt 25 in the storage tube 24 is rotated and unfolded, and the thin towel belt 25 passes through the conversion hole and enters the bottom of the pressure measurement platform 2. The thin towel belt 25 is in a wet state, and the thin towel belt 25 on one side will be attracted by the electrostatic field, and the thin towel belt 25 on the other side will not be affected by the electrostatic field and remain motionless. This is the detection control group to prevent the thin towel belt 25 from swinging due to other influences (such as the operator breathing at close range or people passing by). If there is static electricity on the screen, the static electricity will be removed before subsequent operations are performed. When the thin towel belt 25 is rotated and rolled up in the storage tube 24, since the thin towel belt 25 is in a wet state, the whole will be in a vertical pressure state. After the storage tube 24 rotates, the end of the thin towel belt 25 is still on the outside to prevent the thin towel belt 25 from completely entering the storage tube 24 and then getting stuck. The above advantages are as follows: the Lorentz force formed by the electromagnetic plate 17 can be used to transfer the electrostatic charge to one side of the screen, so that the electrostatic field is located under the thin towel belt 25 on one side, and the electrostatic field is used to attract the wet thin towel belt 25, so as to quickly detect whether the screen has static electricity during the whole processing process, thereby ensuring the safety of the whole screen bonding process; Note: The Lorentz force refers to the force exerted on a moving charge in a magnetic field, that is, the force exerted by the magnetic field on the moving charge (if an object carries static electricity and only carries positive or negative charge, it will move to one side under the action of the Lorentz force. This is the charge manifestation of static electricity generated on the surface of an existing object, and will not be elaborated later).

[0021] When the present invention is in use, the LCD screen to be bonded is placed in the inner limit groove of the fixture seat 1, so that the LCD screen and the pressure seat plate 16 are in contact with each other, and then the hydraulic cylinder 4 on the mounting seat 3 is started, and the hydraulic cylinder 4 will drive the pressure measuring platform 2 to move down slowly. At this time, the sealing plate 21 is located in the adapted conversion hole, and the bottom end of the pressure measuring platform 2 is in a complete plane state. When the pressure measuring platform 2 presses the LCD screen, the LCD screen will transfer part of the extrusion to the pressure seat plate 16, and the pressure seat plate 16 will press the top plate 15. The top plate 15 is pressed and the throttle plate 12 is driven downward through the slide rod 13, and the throttle plate 12 is moved downward. The hydraulic oil under the plate 12 will be pressed upward through a plurality of arc-shaped throttle holes. The throttle holes block the flow of the hydraulic oil, thereby blocking the downward movement of the throttle plate 12, and further slowing down the downward movement of the pressure-bearing seat plate 16. This allows the LCD screen to receive gradually enhanced buffer support during the pressure-bearing strength test, which is more in line with the subsequent situation where the LCD screen and the touch screen are pressed together on a positive pressure plate with a certain elasticity. After the pressure test, the operator confirms whether the product is damaged through the observation and power-on test process consistent with the LCD screen after production. This is an existing process and technology, and will not be elaborated on here. After the LCD screen and the touch screen are bonded, the bonded screen is pre-bonded by the pressure test platform 2 to ensure that the bonded screen is offset during the process of being taken out and transferred in the fixture seat 1. When the bonded screen needs to be taken out later, the piston push rod 5 is pressed, and the hydraulic plate 7 presses the hydraulic oil in the piston extrusion chamber 8, and the hydraulic oil is synchronously pressed into multiple storage grooves 10 through the transition chamber 9, and then pressed into the buffer cylinder 11, and the top plate 15 is driven to move up by pressing the throttle plate 12 to press the bonded screen in the fixture seat 1 out, so that the operator can quickly take the bonded screen out of the fixture seat 1. In this way, the damping component can be used to provide buffer support for the pressure test before the LCD screen is bonded, so as to absorb part of the kinetic energy of the LCD screen when it is pressed, avoid rigid contact between the upper and lower end surfaces of the LCD screen when it is pressed, simulate the pressure state of the LCD screen during the subsequent positive bonding, ensure that the pressure strength of the LCD screen before bonding is qualified, and avoid unqualified LCD screens from entering the subsequent process; After the pressure test of the LCD screen is qualified, the operator tears off the release film on the LCD screen in the fixture seat 1, and then energizes the electromagnetic plates 17 on both sides simultaneously, so that the two electromagnetic plates 17 have opposite magnetic poles on the opposite sides, and the electromagnetic plates 17 on both sides will form magnetic fields in opposite directions. If the LCD screen with the release film torn off has static electricity, the static electricity will be concentrated to one side of the LCD screen under the action of the composite strong magnetic field Lorentz force formed by the two electromagnetic plates 17, so that there is an electrostatic field on one side of the LCD screen at this time, and at the same time, the liquid The push rod 18 is pressed to start the conversion seat 20 to move up, and the conversion seat 20 moves up to drive the sealing plate 21 to move out of the conversion hole. Then the conversion motor 19 is started to drive the conversion seat 20 to rotate 180 degrees through the driving shaft, and the storage tube 24 is rotated to the bottom. During the rotation of the driving shaft, the driving gear ring 22 is driven to rotate synchronously. The rotation of the driving gear ring 22 drives the meshing driven gear 23 to rotate. The rotation of the driven gear 23 drives the rotating shaft to rotate, and the thin towel belt 25 in the storage tube 24 is rotated and unfolded, allowing the thin towel belt 25 to pass through. The conversion hole enters the lower part of the pressure measurement platform 2, and the thin towel belt 25 is in a wet state. Then the thin towel belt 25 on one side will be attracted by the electrostatic field, and the thin towel belt 25 on the other side will not be affected by the electrostatic field and remain motionless. This is the detection control group to prevent the thin towel belt 25 from swinging due to other influences (such as the operator breathing at close range or people passing by). If there is static electricity on the screen, the static electricity will be removed before subsequent operations. When the thin towel belt 25 is rotated and rolled up in the storage tube 24, since the thin towel belt 25 is in a wet state, the whole will be in a vertical pressure state. After the storage tube 24 rotates, the end of the thin towel belt 25 is still on the outside to prevent the thin towel belt 25 from completely entering the storage tube 24 and then getting stuck. In this way, the Lorentz force formed by the electromagnetic plate 17 can be used to transfer the electrostatic charge to one side of the screen, so that the electrostatic field is located below the thin towel belt 25 on one side. By using the electrostatic field to attract the wet thin towel belt 25, it is quickly detected whether there is static electricity on the screen during the entire processing process, thereby ensuring the safety of the entire screen bonding process.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A testing fixture for display screens, comprising a pressure testing platform (2) and a fixture seat (1) for placing a liquid crystal screen and a touch screen, characterized in that: The fixture seat (1) is provided with a piston extrusion chamber (8), a pressurizing component is arranged in the piston extrusion chamber (8), the fixture seat (1) is provided with a transition chamber (9) above the piston extrusion chamber (8), the fixture seat (1) is provided with a plurality of receiving grooves (10) above the transition chamber (9), the inner side wall of the receiving groove (10) is connected with a buffer cylinder (11), and a damping component for buffering the pressure of the buffer crystal screen is arranged in the buffer cylinder (11); The left and right side walls of the fixture seat (1) are fixedly connected to electromagnetic plates (17), the pressure measurement platform (2) is provided with two conversion holes, and a conversion seat (20) is arranged above the two conversion holes, the bottom end of the conversion seat (20) is fixedly connected to a sealing plate (21), and the top end of the conversion seat (20) is connected to a charge direction finding component for testing static electricity through a fixed seat.

2. A detection jig for display screens according to claim 1, characterized in that: The top of the jig seat (1) is fixedly connected to a mounting seat (3) via two support rods; the mounting seat (3) is fixedly connected to the top of the pressure measuring platform (2) via a hydraulic cylinder (4); and the jig seat (1) is provided with an inner limit groove and an outer limit groove for placing a liquid crystal screen and an external touch screen, respectively.

3. The detection fixture for display screen according to claim 1, characterized in that: The pressurizing assembly is composed of a piston push rod (5) and a hydraulic plate (7); the end of the piston push rod (5) is fixedly connected to the end surface of the hydraulic plate (7); a return spring (6) is sleeved on the outer wall of the piston push rod (5); the side wall of the hydraulic plate (7) is slidably connected to the inner wall of the piston extrusion chamber (8); and hydraulic oil is provided in the piston extrusion chamber (8).

4. The detection fixture for display screen according to claim 1, characterized in that: The piston extrusion chamber (8) is connected to a plurality of receiving grooves (10) via a transition chamber (9); the inner side walls of the receiving grooves (10) are fixedly connected to the outer side walls of the buffer cylinder (11); and the bottom end of the buffer cylinder (11) is connected to the receiving grooves (10).

5. The detection fixture for display screen according to claim 1, characterized in that: The damping assembly is composed of a throttle plate (12) and a top plate (15); the top end of the throttle plate (12) is fixedly connected to the bottom end of the top plate (15) via a slide rod (13); the slide rod (13) is slidably connected to the inner side wall of the top end of the buffer cylinder (11); a damping spring (14) is sleeved on the outer side wall of the slide rod (13); a plurality of arc-shaped throttle holes are formed on the throttle plate (12); and the top end of the top plate (15) is fixedly connected to a pressure-bearing seat plate (16).

6. The detection jig for display screen according to claim 1, characterized in that: The conversion hole on the pressure measuring platform (2) is adapted to a sealing plate (21); two hydraulic push rods (18) are fixedly connected to the top of the pressure measuring platform (2) at both ends of the conversion hole; the output ends of the hydraulic push rods (18) are fixedly connected to a fixing plate; one side of the fixing plate is fixedly connected to a conversion motor (19) via an assembly seat.

7. The detection jig for display screen according to claim 6, characterized in that: The output end of the conversion motor (19) is fixedly connected to the inner wall of the conversion seat (20) via a drive shaft, the outer wall of the drive shaft is fixedly connected to a drive gear ring (22), and a driven gear (23) is meshingly connected above the drive gear ring (22).

8. The detection fixture for display screen according to claim 7, characterized in that: The charge direction finding assembly is composed of a storage tube (24) and a thin towel belt (25); the top end of the conversion seat (20) is fixedly connected to the outer wall of the storage tube (24) via a fixing seat; an outlet is provided on the upper side wall of the storage tube (24); the end surface of the driven gear (23) is rotatably connected to the inner end surface of the storage tube (24) via a rotating shaft; and the thin towel belt (25) is wound on the outer wall of the rotating shaft.

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