Quality detection device for screen production and use method thereof

Abstract

The invention discloses a quality detection device for screen production and a use method thereof, and relates to the technical field of screen production, the quality detection device comprises a detection frame with a plurality of sliding shafts, and the sliding shafts are slidably connected with a first mounting plate; and a pressure testing mechanism is arranged on the first mounting plate. The pressure testing mechanism is arranged, and an air bag on the second mounting plate is driven to descend, so that the display screen is accurately extruded and positioned; then, the jacking mechanism controls the first mounting plate to ascend stably so as to maintain a continuous upward pressure state; thus, when the display screen deforms due to stress, the position of the air bag can be automatically adjusted, it is guaranteed that the air bag makes effective contact with the surface of the display screen all the time, and then it is guaranteed that pressure applied to the display screen is evenly distributed; according to the method, the stability and consistency in the detection process are improved, and the overall detection efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of screen production, and in particular to a quality detection device for screen production and a method of using the device. Background Art

[0002] Screen quality inspection devices are equipment used to evaluate and inspect display screen performance and defects; these devices are essential to ensure that displays meet high standards of quality before leaving the factory.

[0003] In the prior art, in order to ensure the quality and reliability of the display screen, pressure testing is an indispensable link, which aims to evaluate the performance and performance of the display screen under pressure. By performing multi-point pressure testing on the display screen, a test head is pressed on the display surface with a certain pressure, and the display surface is observed to detect the performance of the display screen under pressure. This test can determine the maximum load-bearing capacity of the display screen and its stability and durability under the action of external forces.

[0004] However, the above screen pressure detection device still has the following defects during use:

[0005] When the screen is pressure-tested, the applied pressure causes the screen to deform, making it difficult to evenly distribute the pressure on the screen surface, thus affecting the reliability of the test. In addition, when the screen is not completely perpendicular to the test head, uneven pressure is more likely to occur, further reducing the efficiency of screen quality inspection. Summary of the invention

[0006] In order to overcome the above-mentioned technical problems, the purpose of the present invention is to provide a quality inspection device for screen production and a method of using the same, so as to solve the problem that during the pressure test proposed in the above-mentioned background technology, the pressure is difficult to be evenly distributed on the screen surface, thereby affecting the reliability of the test.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A quality inspection device for screen production includes an inspection frame with a plurality of sliding shafts, wherein a first mounting plate is slidably connected to the sliding shaft; a pressure testing mechanism is arranged on the first mounting plate; the pressure testing mechanism includes:

[0009] A hydraulic cylinder, wherein a top plate is provided at the top of the sliding shaft, and the hydraulic cylinder is installed at the top;

[0010] a second mounting plate, the second mounting plate being arranged at an output end of the hydraulic cylinder;

[0011] An airbag, wherein the airbag is arranged on the pressure testing mechanism; a display screen is arranged on a first mounting plate with a through hole below the airbag; when the display screen is subjected to force, the arrangement of the through hole allows the display screen to be deformed by the force;

[0012] a barometer mounted on the second mounting plate;

[0013] And a lifting mechanism, which is installed on the detection frame; the lifting mechanism is used to drive the first installation plate to rise and fall along the sliding shaft to drive the display screen and the airbag to be squeezed.

[0014] Preferably, a universal joint is provided between the output end of the hydraulic cylinder and the second mounting plate.

[0015] Preferably, a gas tank is provided on the first mounting plate, and an output end of the gas tank is connected to the interior of the airbag through a spring hose.

[0016] Preferably, the lifting mechanism includes a cylinder, two groups of rotating rods and a slider; the two groups of rotating rods are alternately arranged between the detection frame and the first mounting plate, and the two ends of one group of rotating rods are respectively hinged to the detection frame and the first mounting plate; one end of the other group of rotating rods is hinged to the detection frame, and the other end of the other group of rotating rods is hinged to the slider, and the slider is slidably connected to the bottom of the first mounting plate; the cylinder is installed between the two groups of rotating rods.

[0017] Preferably, a clamping mechanism is provided on the first mounting plate; the clamping mechanism is used to clamp the side of the display screen, so that when the pressure testing mechanism applies pressure testing to the display screen, the display screen is allowed to be deformed by force.

[0018] Preferably, the clamping mechanism includes an installation frame, a plurality of clamping blocks, a first rotating block and a second rotating block; the installation frame is arranged on the first mounting plate, the plurality of clamping blocks are slidably connected to the installation frame, the first rotating block is hinged to the clamping block, the first rotating block is hinged to the clamping block, one end of the second rotating block is hinged to the first rotating block, and the other end of the second rotating block is rotatably connected to the installation frame through a pin shaft; a handle is provided on the second rotating block.

[0019] Preferably, a mounting block is provided on the mounting frame, and a first compression spring is provided between the clamping block and the mounting block; when the clamping block loses its limiting force, the first compression spring is used to drive the clamping block to slide and reset.

[0020] Preferably, the clamping block is an L-shaped structure; the L-shaped structure is compatible with the bottom surface and side surfaces of the display screen.

[0021] Preferably, a detection mechanism is arranged between the first mounting plate and the mounting frame; the detection mechanism comprises a telescopic rod, a second compression spring and a pressure sensor; the pressure sensor is mounted on the first mounting plate, the telescopic rod is arranged between the mounting frame and the pressure sensor, and the telescopic rod is sleeved with a second compression spring which contacts the mounting frame.

[0022] A method for using a quality inspection device for screen production, comprising the following steps:

[0023] Step 1: Clamping and positioning: first, place the display screen on the first mounting plate with a through hole, then drive the airbag down through the hydraulic cylinder to contact the display screen, clamp the display screen, and use the pressure gauge to detect the clamping force of the display screen;

[0024] Step 2: Pressure test: The first mounting plate is driven upward by the lifting mechanism to increase the force between the display screen and the airbag. The pressure gauge reflects the force on the display screen to achieve quality inspection of the display screen.

[0025] Beneficial effects of the present invention:

[0026] 1. By setting up a pressure test mechanism, the airbag on the second mounting plate is driven to descend, thereby achieving precise extrusion positioning of the display screen; then, the lifting mechanism controls the first mounting plate to rise steadily to maintain a continuous upward pressure state; in this way, when the display screen is deformed due to force, the airbag can automatically adjust its position to ensure that it always maintains effective contact with the surface of the display screen, thereby ensuring that the pressure applied to the display screen is evenly distributed; this method not only improves the stability and consistency of the detection process, but also significantly improves the overall detection efficiency;

[0027] 2. By setting up a clamping mechanism, the display screen can be further positioned, which not only can accurately fix the position of the display screen to ensure that it remains stable during the entire test process, but also is easy to operate, easy to locate and take, greatly improving the convenience of use;

[0028] 3. By setting up a detection mechanism, when the first mounting plate moves upward and cooperates with the airbag to apply pressure to the display screen, real-time feedback on the pressure the display screen is subjected to can be obtained. In this way, not only can the force applied to the display screen be adjusted instantly to ensure that it is within a safe range and screen damage caused by overpressure be avoided, but also the product scrap rate caused by improper testing can be significantly reduced, thereby effectively reducing cost losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the overall first-view stereoscopic structure of the present invention;

[0031] Figure 2 is a schematic diagram of the overall second viewing angle stereoscopic structure of the present invention;

[0032] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0033] Figure 4 It is a partial three-dimensional enlarged structural schematic diagram of the pressure testing mechanism of the present invention;

[0034] Figure 5 It is a partially cutaway three-dimensional enlarged structural schematic diagram of the pressure testing mechanism of the present invention;

[0035] Figure 6 It is a three-dimensional enlarged structural schematic diagram of the clamping state of the clamping mechanism of the present invention;

[0036] Figure 7 It is a partial three-dimensional enlarged structural schematic diagram of the clamping mechanism of the present invention in a released state;

[0037] Figure 8 It is a schematic diagram of a three-dimensional enlarged structure of the detection mechanism of the present invention;

[0038] Fig. 9 It is a flow chart of the method of the present invention.

[0039] In the figure: 1. detection frame; 2. sliding shaft; 3. first mounting plate; 4. display screen; 5. pressure testing mechanism; 51. second mounting plate; 52. air bag; 53. hydraulic cylinder; 54. universal joint; 55. barometer; 56. gas tank; 57. lifting mechanism; 571. rotating rod; 572. cylinder; 573. slider; 6. clamping mechanism; 61. mounting frame; 62. clamping block; 63. first rotating block; 64. second rotating block; 65. mounting block; 66. first compression spring; 7. detection mechanism; 71. telescopic rod; 72. second compression spring; 73. pressure sensor. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figure 1-8 As shown, a quality inspection device for screen production, such as Figure 1-4As shown, it includes a detection frame 1 with multiple sliding shafts 2, on which a first mounting plate 3 is slidably connected; a pressure testing mechanism 5 is arranged on the first mounting plate 3; the pressure testing mechanism 5 includes: a hydraulic cylinder 53, a top plate is arranged on the top of the sliding shaft 2, and the hydraulic cylinder 53 is installed on the top; a second mounting plate 51, the second mounting plate 51 is arranged at the output end of the hydraulic cylinder 53; an airbag 52, the airbag 52 is arranged on the pressure testing mechanism 5; a display screen 4 is arranged on the first mounting plate 3 with a through hole below the airbag 52; when the display screen 4 When subjected to force, the setting of the through hole allows the display screen 4 to be deformed under force; the air pressure detection gauge 55, the air pressure detection gauge 55 is installed on the second mounting plate 51; and the lifting mechanism 57, the lifting mechanism 57 is installed on the detection frame 1; the lifting mechanism 57 is used to drive the first mounting plate 3 to rise and fall along the sliding shaft 2, so as to drive the display screen 4 and the airbag 52 to be squeezed; an air tank 56 is provided on the first mounting plate 3, and the output end of the air tank 56 is connected to the inside of the airbag 52 through a spring hose; it can be understood that the spring hose is a prior art and will not be described in detail.

[0042] It should be noted that the display screen 4 to be tested is first placed on the through hole of the first mounting plate 3 below the airbag 52, so that the four sides of the display screen 4 are placed on the edges of the through hole, and then the airbag 52 on the second mounting plate 51 is driven down by the hydraulic cylinder 53. At this time, a certain amount of gas is filled in the airbag 52 until the airbag 52 contacts the display screen 4. The pressure of the airbag 52 on the display screen 4 is accurately known through the numerical display of the air pressure detection gauge 55; then the first mounting plate 3 is controlled to rise by the lifting mechanism 57, driving the display screen 4 to squeeze the airbag 52 upward, and the display is reflected by the air pressure detection gauge 55. The stress state of the screen 4 is realized to detect the screen force; through the cooperation and extrusion of the airbag 52, when the output end of the hydraulic cylinder 53 is inclined with the top surface of the display screen 4, that is, in a non-vertical state, the airbag 52 can automatically adjust the position to ensure effective resistance to the display screen 4, which is beneficial to the next step of detection; when the airbag 52 is cooperated with the extrusion and the upward extrusion control state is maintained by the lifting mechanism 57, the display screen 4 is detected, so that when the display screen 4 is deformed by the force, the airbag 52 still always maintains effective resistance to the display screen 4, ensuring that the pressure on the display screen 4 is uniform, thereby improving the detection efficiency.

[0043] like Figure 1-5 As shown, a universal joint 54 is provided between the output end of the hydraulic cylinder 53 and the second mounting plate 51 .

[0044] It should be noted that in order to prevent the inclination angle between the output shaft of the hydraulic cylinder 53 and the display screen 4 from being too large, causing excessive deformation of the airbag 52 and affecting the force detection effect; a universal joint 54 is provided so that when a large deformation occurs between the hydraulic cylinder 53 and the display screen 4, the airbag 52 and the display screen 4 are still effectively squeezed, thereby ensuring the quality detection effect of the display screen 4.

[0045] like Figure 1-3 As shown, the lifting mechanism 57 includes a cylinder 572, two groups of rotating rods 571 and a slider 573; the two groups of rotating rods 571 are alternately arranged between the detection frame 1 and the first mounting plate 3, and the two ends of one group of rotating rods 571 are respectively hinged to the detection frame 1 and the first mounting plate 3; one end of the other group of rotating rods 571 is hinged to the detection frame 1, and the other end of the other group of rotating rods 571 is hinged to the slider 573, and the slider 573 is slidably connected to the bottom of the first mounting plate 3; the cylinder 572 is installed between the two groups of rotating rods 571.

[0046] It should be noted that when the first mounting plate 3 is controlled to move upward to squeeze the display screen 4, the cylinder 572 contracts to drive the two groups of rotating rods 571 to rotate. The lengths of the two groups of rotating rods 571 are equal. When one group of rotating rods 571 is rotated under force, one end of the other group of rotating rods 571 slides on the first mounting plate 3 through the slider 573, thereby driving the first mounting plate 3 to move upward along the sliding shaft 2, thereby realizing the squeezing detection of the display screen 4 through the cooperation of the airbag 52; by controlling the first mounting plate 3 to move upward for squeezing detection, it can be ensured that the squeezing force on the display screen 4 is always perpendicular to the force-bearing surface of the display screen 4, thereby ensuring the detection effect.

[0047] like Figure 3 and Figure 6-7 As shown, a clamping mechanism 6 is provided on the first mounting plate 3; the clamping mechanism 6 is used to clamp the side of the display screen 4 so that when the pressure testing mechanism 5 applies pressure to the display screen 4 for testing, the display screen 4 is allowed to be deformed under force; the clamping mechanism 6 includes a mounting frame 61, a plurality of clamping blocks 62, a first rotating block 63 and a second rotating block 64; the mounting frame 61 is provided on the first mounting plate 3, and a plurality of clamping blocks 62 are slidably connected to the mounting frame 61; the clamping block 62 is an L-shaped structure; the L-shaped structure is adapted to the bottom and side surfaces of the display screen 4; the first rotating block 63 is hinged to the clamping block 62, the first rotating block 63 is hinged to the clamping block 62, one end of the second rotating block 64 is hinged to the first rotating block 63, and the other end of the second rotating block 64 is rotatably connected to the mounting frame 61 through a pin; a handle is provided on the second rotating block 64; it can be understood that the pin and the handle are both prior art and will not be described in detail.

[0048] It should be noted that in order to ensure the stability of the display screen 4 when it is subjected to force, the display screen 4 is positioned and clamped by the clamping mechanism 6; specifically, the display screen 4 is first placed on the mounting frame 61, and then the second rotating block 64 is driven to rotate by pushing the handle in the forward direction, the first rotating block 63 is driven to rotate by the second rotating block 64, and the clamping block 62 is pushed to move by the first rotating block 63 until the rotation points among the second rotating block 64, the first rotating block 63 and the clamping block 62 are all on the same straight line, so that multiple handles are pushed to rotate, so that multiple clamping blocks 62 are close to the side of the display screen 4, thereby clamping the display screen 4; and when the display screen 4 needs to be taken out, it is only necessary to push the handle in the reverse direction to drive the clamping block 62 away from the side of the display screen 4, thereby facilitating the removal of the display screen 4.

[0049] like Figure 6-7 As shown, a mounting block 65 is provided on the mounting frame 61, and a first compression spring 66 is provided between the clamping block 62 and the mounting block 65; when the clamping block 62 loses its limiting force, the first compression spring 66 is used to drive the clamping block 62 to slide and reset.

[0050] It should be noted that in order to ensure the stability of the clamping block 62 clamping the display screen 4; when the handle rotates to drive the clamping block 62 to slide close to the display screen 4, the first compression spring 66 is extended. When the rotation points between the second rotating block 64, the first rotating block 63 and the clamping block 62 are all on the same straight line, the first compression spring 66 is in an extended state. At this time, the elastic force of the first compression spring 66 makes the rotation points between the second rotating block 64, the first rotating block 63 and the clamping block 62 in a stable straight line state, which is beneficial to improve the stability of the clamping block 62 clamping the display screen 4.

[0051] like Figure 3 and Figure 6-8 As shown, a detection mechanism 7 is arranged between the first mounting plate 3 and the mounting frame 61; the detection mechanism 7 includes a telescopic rod 71, a second compression spring 72 and a pressure sensor 73; the pressure sensor 73 is installed on the first mounting plate 3, the telescopic rod 71 is arranged between the mounting frame 61 and the pressure sensor 73, and the telescopic rod 71 is sleeved with a second compression spring 72 that contacts the mounting frame 61.

[0052] It should be noted that the stress condition of the display screen 4 is indirectly reflected by detecting the air pressure in the airbag 52 through the barometer 55; since the air pressure in the airbag 52 is easily affected by the elasticity of the airbag 52, the ambient temperature, etc., a detection mechanism 7 is set to reflect the stress condition of the display screen 4; specifically, by driving the first mounting plate 3 to move upward to cooperate with the airbag 52 to squeeze the display screen 4, the pressure on the pressure sensor 73 is increased, and the stress state of the display screen 4 is detected by the pressure sensor 73; in order to prevent the first mounting plate 3 from moving too fast and the staff from being unable to react quickly to stop the detection and causing damage to the display screen 4; therefore, by setting a second compression spring 72, part of the pressure can be offset to reduce the detection cost loss.

[0053] like Figure 1-9 As shown, a method for using a quality inspection device for screen production includes the following steps:

[0054] Step 1: clamping and positioning: firstly, the display screen 4 is placed on the first mounting plate 3 with a through hole, and then the hydraulic cylinder 53 drives the airbag 52 to descend and contact the display screen 4 to clamp the display screen 4, and the clamping force of the display screen 4 is detected by the barometer 55;

[0055] Step 2, pressure test: drive the first mounting plate 3 to move upward through the lifting mechanism 57 to increase the force between the display screen 4 and the airbag 52, and reflect the force of the display screen 4 through the barometer 55 to achieve quality inspection of the display screen 4.

[0056] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying 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 direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it 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 an indirect connection 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.

[0058] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A quality inspection device for screen production, comprising an inspection frame (1) with a plurality of sliding shafts (2), wherein a first mounting plate (3) is slidably connected to the sliding shafts (2); characterized in that: The first mounting plate (3) is provided with a pressure testing mechanism (5); the pressure testing mechanism (5) comprises: A hydraulic cylinder (53), wherein a top plate is provided at the top end of the sliding shaft (2), and the hydraulic cylinder (53) is mounted on the top end; A second mounting plate (51), the second mounting plate (51) being arranged at an output end of the hydraulic cylinder (53); An airbag (52), wherein the airbag (52) is arranged on the pressure testing mechanism (5); a display screen (4) is arranged on a first mounting plate (3) with a through hole below the airbag (52); A barometer (55), the barometer (55) being mounted on the second mounting plate (51); and a lifting mechanism (57), wherein the lifting mechanism (57) is installed on the detection frame (1); the lifting mechanism (57) is used to drive the first mounting plate (3) to rise and fall, so as to drive the display screen (4) and the air bag (52) to be squeezed.

2. A quality inspection device for screen production according to claim 1, characterized in that: A universal joint (54) is provided between the output end of the hydraulic cylinder (53) and the second mounting plate (51).

3. The quality inspection device for screen production according to claim 1, characterized in that: An air tank (56) is arranged on the first mounting plate (3), and an output end of the air tank (56) is connected to the interior of the air bag (52) via a spring hose.

4. The quality inspection device for screen production according to claim 1, characterized in that: The lifting mechanism (57) comprises a cylinder (572), two groups of rotating rods (571) and a slider (573); the two groups of rotating rods (571) are alternately arranged between the detection frame (1) and the first mounting plate (3), and two ends of one group of rotating rods (571) are respectively hinged to the detection frame (1) and the first mounting plate (3); one end of the other group of rotating rods (571) is hinged to the detection frame (1), and the other end of the other group of rotating rods (571) is hinged to the slider (573), and the slider (573) is slidably connected to the bottom of the first mounting plate (3); the cylinder (572) is installed between the two groups of rotating rods (571).

5. The quality inspection device for screen production according to claim 1, characterized in that: The first mounting plate (3) is provided with a clamping mechanism (6); the clamping mechanism (6) is used to clamp the side of the display screen (4) so ​​that when the pressure testing mechanism (5) applies pressure to the display screen (4) for testing, the display screen (4) is allowed to deform under force.

6. The quality inspection device for screen production according to claim 5, characterized in that: The clamping mechanism (6) comprises a mounting frame (61), a plurality of clamping blocks (62), a first rotating block (63) and a second rotating block (64); the mounting frame (61) is arranged on the first mounting plate (3); the plurality of clamping blocks (62) are slidably connected to the mounting frame (61); the first rotating block (63) is hinged to the clamping block (62); the first rotating block (63) is hinged to the clamping block (62); one end of the second rotating block (64) is hinged to the first rotating block (63); the other end of the second rotating block (64) is rotatably connected to the mounting frame (61) via a pin shaft; a handle is arranged on the second rotating block (64).

7. A quality inspection device for screen production according to claim 6, characterized in that: The mounting frame (61) is provided with a mounting block (65), and a first compression spring (66) is provided between the clamping block (62) and the mounting block (65); when the clamping block (62) loses its limiting force, the first compression spring (66) is used to drive the clamping block (62) to slide and reset.

8. The quality inspection device for screen production according to claim 6, characterized in that: The clamping block (62) is an L-shaped structure; the L-shaped structure is compatible with the bottom surface and side surfaces of the display screen (4).

9. The quality inspection device for screen production according to claim 6, characterized in that: A detection mechanism (7) is arranged between the first mounting plate (3) and the mounting frame (61); the detection mechanism (7) comprises a telescopic rod (71), a second compression spring (72) and a pressure sensor (73); the pressure sensor (73) is mounted on the first mounting plate (3), the telescopic rod (71) is arranged between the mounting frame (61) and the pressure sensor (73), and the telescopic rod (71) is sleeved with a second compression spring (72) which contacts the mounting frame (61).

10. A method for using a quality inspection device for screen production according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: clamping and positioning: first, the display screen (4) is placed on the first mounting plate (3) with a through hole, and then the air bag (52) is driven by the hydraulic cylinder (53) to descend and contact the display screen (4), thereby clamping the display screen (4), and the clamping force of the display screen (4) is detected by the air pressure gauge (55); Step 2: Pressure test: The first mounting plate (3) is driven to move upwards by the lifting mechanism (57), thereby increasing the force between the display screen (4) and the air bag (52), and the pressure gauge (55) reflects the force applied to the display screen (4), thereby realizing quality inspection of the display screen (4).

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