Surface scratch detection equipment and detection process for touch screen production

Abstract

The invention belongs to the technical field of screen detection, and particularly relates to surface scratch detection equipment for touch screen production and a detection process, and the surface scratch detection equipment comprises a base, four supporting legs, a material passing groove, two fastening grooves, two electric sliding rails and four inner sliding grooves, the four supporting legs are fixedly connected to the four corners of the bottom of the base respectively, and the four inner sliding grooves are fixedly connected to the four corners of the bottom of the base respectively. The material passing groove is formed in the middle of the top of the base, the two fastening grooves are formed in the tops of the two sides of the material passing groove correspondingly, the two electric sliding rails are formed in the two sides of the base correspondingly, the four inner sliding grooves are formed in the two ends of the two fastening grooves correspondingly, and sliding blocks are slidably connected into the two electric sliding rails correspondingly. The tops of the two sliding blocks are fixedly connected with side frames. According to the device, the arch-shaped steel sheet, the sleeve, the telescopic rod, the liquid storage tank, the electromagnetic valve, the roller and the sponge sleeve are arranged, so that the purposes of automatically clamping the touch screen, automatically coloring the crack with ink and simplifying the detection steps are achieved.

Description

Technical Field

[0001] The present invention relates to the field of screen detection technology, and in particular to a surface scratch detection device and a detection process for touch screen production. Background Art

[0002] A touch screen 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] After searching, a Chinese patent application with application publication number CN114298204A discloses a device screen scratch detection model training method and a device screen scratch detection method. After obtaining the scratch attribute information of each smart device, the scratch attribute information and whether the corresponding smart device has scratches are used as training data to train a detection model for detecting whether there are scratches on the device screen.

[0004] The scratch detection process of the above patent is complex and costly. It has no practical and promotional value for products that can be identified as having scratches by visual inspection. Single manual visual inspection may cause misjudgment due to factors such as ambient light or screen color. It is urgent to design a method that, after obtaining the scratch attribute information of each smart device, uses the scratch attribute information and whether the corresponding smart device has scratches as training data to train a detection model for detecting whether there are scratches on the device screen. Based on this, the interference factors encountered in the use of image recognition for detection are avoided, and the stability of scratch detection is ensured to solve the above problems. Summary of the invention

[0005] Based on the technical problems of the device screen scratch detection model training method and the device screen scratch detection method having complex process and high cost, the present invention proposes a surface scratch detection device and detection process for touch screen production.

[0006] The present invention proposes a surface scratch detection device for touch screen production, comprising a base, four supporting legs, a material passing trough, two fastening grooves, two electric slide rails and four inner slide grooves, wherein the four supporting legs are respectively fixedly connected to the four corners of the bottom of the base, the material passing trough is arranged in the middle position of the top of the base, the two fastening grooves are respectively arranged at the tops of both sides of the material passing trough, the two electric slide rails are respectively arranged at both sides of the base, the four inner slide grooves are respectively arranged at both ends of the two fastening grooves, the interiors of the two electric slide rails are slidably connected with sliders, the tops of the two sliders are respectively fixedly connected with side frames, the same liquid storage tank is fixedly connected between the two side frames, liquid outlet pipes are inserted at both sides of the bottom of the liquid storage tank, and electromagnetic Valve, a same roller is rotatably connected between the bottoms of the two liquid outlet pipes, the inner cavity of the roller is connected to the inner cavities of the two liquid outlet pipes, and evenly distributed liquid outlet holes are opened at the bottom of the roller. The outside of the roller is sleeved with a sponge sleeve, and the middle inner walls of the two fastening grooves are fixedly connected with sleeves, and the interiors of the two sleeves are provided with travel switches, and the two travel switches are respectively connected in series to the power supply circuits of the two electric slide rails. The interiors of the two sleeves are slidably connected with telescopic rods, and the ends of the two telescopic rods that are close to each other are fixedly connected with bow-shaped steel sheets, and the opening sides of the two bow-shaped steel sheets are respectively facing the telescopic rods adjacent to themselves, and the two ends of the two bow-shaped steel sheets are rotatably connected with rollers, and the four rollers are respectively clamped in the interiors of the four inner slide grooves.

[0007] Preferably, a sealing cover is hinged on the top of the liquid storage tank, and two lock buckles are fixedly connected between the sealing cover and the outer wall of the liquid storage tank, a liquid filling port is inserted in the middle of the sealing cover, a handle is fixedly connected to the top of the sealing cover, and a liquid level window is arranged in the middle of one side of the liquid storage tank, the liquid level window is made of acrylic material, and the outer wall of the liquid level window is provided with scales.

[0008] Preferably, two brackets are fixedly connected to the adjacent sides of the two side frames, positioning pins are fixedly connected to the tops of the four brackets, pin holes are opened at the four corners of the liquid storage tank, and the four positioning pins are respectively inserted into the inside of the four pin holes.

[0009] Preferably, a lamp stand is fixedly connected to one side of the base, and a lighting lamp is fixedly connected to the inner wall of the top of the lamp stand.

[0010] Preferably, a storage groove is opened inside the material trough, and the same second rotating shaft is rotatably connected between the inner walls on both sides of the storage groove, and the outer wall in the middle of the second rotating shaft is fixedly connected to a baffle, and second torsion springs are sleeved on both ends of the second rotating shaft, and the ends of the two second torsion springs that are close to each other are fixedly connected to the baffle, and the ends of the two second torsion springs that are far away from each other are fixedly connected to the inner wall of the storage groove.

[0011] Preferably, the side surface of the baffle plate close to the lighting lamp is perpendicular to the bottom surface of the inner wall of the material chute, the inner wall of the bottom of the storage chute is fixedly connected with a positioning slope, and the top slope of the positioning slope is perpendicular to the side surface of the baffle plate away from the lighting lamp.

[0012] Preferably, a ferrule is fixedly connected to the outer wall of the bottom of the liquid storage tank, a sponge strip is inserted into the bottom of the ferrule, both ends of the ferrule are fixedly connected to fixing frames, the same first rotating shaft is rotatably connected between the two fixing frames, two supporting columns are fixedly connected to the middle of one side of the ferrule, the first rotating shaft is rotatably connected to the two supporting columns, both ends of the first rotating shaft are sleeved with first torsion springs, the two ends of the two first torsion springs are respectively fixedly connected to the two fixing frames, the ends of the two first torsion springs that are close to each other are fixedly connected to turntables, the two turntables are fixedly connected to the first rotating shaft, a clamping plate is fixedly connected to the middle of the first rotating shaft, one side of the clamping plate is fitted with the side of the sponge strip, and the top of the clamping plate away from the sponge strip is provided with evenly distributed anti-slip grooves.

[0013] Preferably, the middle inner walls of the two fastening grooves are clamped with fixed blocks, the two sleeves are fixedly connected to the two fixed blocks respectively, the middle parts of the two arched steel sheets on the side away from each other are fixedly connected with slots, the ends of the two telescopic rods close to each other are fixedly connected with movable blocks, and the two movable blocks are respectively inserted into the inside of the two slots.

[0014] Preferably, the middle inner walls of the four inner slide grooves are fixedly connected to the limit strips, the middle parts of the four rollers are provided with slots adapted to the limit strips, the four limit strips are respectively clamped in the inside of the four slots, the four rollers are made of steel, and the four limit strips are made of permanent magnet material.

[0015] A surface scratch detection process for touch screen production, the process steps of which include: inserting and pushing the touch screen to be inspected from one end of a material trough, gradually squeezing the edges of the two sides of the touch screen with an arched steel sheet to deform the arched steel sheet, and clamping and fastening the touch screen by using the reaction force of the arched steel sheet against the deformation; while the arched steel sheet is deforming, two telescopic rods are respectively inserted into the depths of two sleeves until the travel switches inside the sleeves are triggered, and two electric slide rails are turned on to the power supply, and the slider drives the side frame and the liquid storage tank to make a period of horizontal reciprocating motion along the electric slide rails. During this process, the electromagnetic valve controls the liquid outlet pipe to be turned on, and the gravure ink in the liquid storage tank enters the drum and penetrates through the liquid outlet hole. Entering the interior of the sponge cover, in the first half of the reciprocating motion of the liquid storage tank, the sponge cover rolls the touch screen at a uniform speed and evenly applies the gravure ink to the surface of the touch screen. The residual ink is re-absorbed back to the sponge cover in the second half of the reciprocating motion of the liquid storage tank. The amount of ink remaining in the cracks is large and not easy to be fully absorbed, so it will remain and be colored to form marks, so that the staff can distinguish the cracks during the visual inspection. After completing the visual inspection, the touch screen continues to be pushed along the chute. After the support between the two arched steel sheets is lost, it begins to reset, the telescopic rod moves away from the sleeve, and the travel switch automatically disconnects the electric slide rail from the power supply, so that the next touch screen can enter the chute for inspection.

[0016] Compared with the prior art, the present invention provides a surface scratch detection device and detection process for touch screen production, which has the following beneficial effects: 1. This kind of surface scratch detection equipment and detection process for touch screen production realizes automatic clamping of the touch screen, automatic coloring of the cracks with ink, and simplifies the detection steps by setting a bow-shaped steel sheet, a sleeve, a telescopic rod, a liquid storage tank, a solenoid valve, a roller and a sponge sleeve. When the touch screen enters the material trough, the edges on both sides gradually squeeze the bow-shaped steel sheet, causing the bow-shaped steel sheet to deform, and the touch screen is clamped and tightened by the reaction force of the bow-shaped steel sheet against the deformation. While the bow-shaped steel sheet is deformed, the two telescopic rods are respectively inserted into the depth of the two sleeves until the travel switch inside the sleeve is triggered, and the two electric slide rails are turned on to the power supply, and the slider drives the side frame and the liquid storage tank to make a period of horizontal reciprocating motion along the electric slide rail. During this process, the solenoid valve controls the liquid outlet pipe to guide The gravure ink in the liquid storage tank enters the roller and penetrates into the interior of the sponge sleeve through the liquid outlet hole. In the first half of the reciprocating motion of the liquid storage tank, the sponge sleeve rolls the touch screen at a uniform speed and evenly applies the gravure ink to the surface of the touch screen. The residual ink is re-absorbed back to the sponge sleeve in the second half of the reciprocating motion of the liquid storage tank. The amount of ink remaining in the cracks is large and is not easy to be fully absorbed, so it will remain and be colored to form marks, so that the staff can distinguish the cracks during the visual inspection. After completing the visual inspection, the touch screen continues to be pushed along the trough. After the support between the two arched steel sheets is lost, it begins to reset, and the telescopic rod moves away from the sleeve. The travel switch automatically disconnects the electric slide rail from the power supply, so that the next touch screen can enter the trough for inspection.

[0017] 2. This kind of surface scratch detection equipment and detection process for touch screen production, by setting rollers, inner slide grooves, card slots and limit strips, during the deformation of the bow-shaped steel sheet, the rollers at both ends roll along the inner walls of the adjacent inner slide grooves, so as to limit the movement trajectory of the two ends of the bow-shaped steel sheet, ensuring that the opening of the bow-shaped steel sheet can be opened and the deformation is completed smoothly. The telescopic rod is slidably connected with the sleeve, which limits the deformation trajectory of the middle part of the bow-shaped steel sheet and prevents the bow-shaped steel sheet from shifting during deformation. When the roller rolls along the inner wall of the inner slide groove, the card slot is always clamped in the inside of the limit strip. At the same time, the limit strip made of permanent magnet material has an adsorption effect on the roller, which further strengthens the limitation on the two ends of the bow-shaped steel sheet.

[0018] 3. A surface scratch detection device and detection process for touch screen production, by setting a card sleeve, a sponge strip, a clamping plate and a first torsion spring. In the first half of the displacement of the liquid storage tank, the sponge strip contacts the touch screen before the sponge sleeve, and the upper surface of the touch screen is pre-cleaned through the friction between the sponge sleeve and the touch screen to remove foreign matter attached to the surface of the touch screen to ensure smooth coating of the ink. In the second half of the displacement of the liquid storage tank, the sponge strip leaves the touch screen later than the sponge sleeve, which can further absorb the residual ink on the surface of the touch screen and eliminate interference for the staff to observe the coloring of the cracks. The clamping plate and the card sleeve clamp the sponge strip together, and the first torsion spring provides support for the clamping plate to stably clamp it on one side of the sponge strip, press the top of the clamping plate, and the clamping plate rotates around the first rotating shaft after being subjected to force, and the bottom of the clamping plate is separated from the sponge strip. At this time, the sponge strip can be pulled out from the bottom of the card sleeve, which is convenient for replacing the sponge strip that absorbs too much ink.

[0019] 4. This kind of surface scratch detection equipment and detection process for touch screen production, by setting a baffle, a positioning slope, a second torsion spring and a receiving groove, when the touch screen is pushed into the feeding trough, the baffle forms a blockage on its path, and the second torsion spring supports the baffle through its own torque. When encountering resistance, the touch screen can be stopped from being pushed, thereby achieving the purpose of assisting the positioning of the touch screen. After the visual inspection is completed, the thrust is increased and the touch screen is continuously pushed. The second torsion spring is deformed by the force, and the baffle rotates to enter the receiving groove. The bottom surface of the baffle fits the top slope of the positioning slope, and the top surface of the baffle coincides with the plane of the inner wall at the bottom of the feeding trough. The touch screen passes smoothly over the baffle until it leaves the feeding trough. After the baffle loses pressure, the second torsion spring pushes the baffle to automatically reset, thereby positioning the next touch screen to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a surface scratch detection device for touch screen production proposed by the present invention; Figure 2 This is a schematic diagram of the structure of the surface scratch detection device for touch screen production proposed by the present invention at position A; Figure 3This is a schematic diagram of the base structure of a surface scratch detection device for touch screen production proposed by the present invention; Figure 4 This is a schematic diagram of the structure of point B of a surface scratch detection device for touch screen production proposed by the present invention; Figure 5 This is a left-side structural schematic diagram of a surface scratch detection device for touch screen production proposed by the present invention; Figure 6 This is a schematic diagram of the bottom structure of a liquid storage tank of a surface scratch detection device for touch screen production proposed by the present invention; Figure 7 This is a schematic diagram of the top view of a surface scratch detection device for touch screen production proposed by the present invention; Figure 8 This is a schematic diagram of the structure of a card sleeve and a sponge strip of a surface scratch detection device for touch screen production proposed by the present invention; Fig. 9 This is a schematic diagram of the roller structure of a surface scratch detection device for touch screen production proposed by the present invention.

[0021] In the figure: 1. base; 2. support feet; 3. material trough; 4. fastening groove; 5. electric slide rail; 6. slider; 7. side frame; 8. liquid storage tank; 9. sealing cover; 10. liquid filling port; 11. lock buckle; 12. lamp holder; 13. lighting lamp; 14. fixed plug block; 16. bow-shaped steel sheet; 17. movable plug block; 18. inner slide groove; 19. roller; 20. card slot; 21. limit strip; 22. liquid outlet pipe; 23. roller; 24. sponge cover; 25. baffle; 27 , ferrule; 28, support column; 29, turntable; 30, clamping plate; 31, anti-slip groove; 32, sponge strip; 33, first rotating shaft; 34, fixing frame; 35, first torsion spring; 36, storage groove; 37, positioning slope; 38, second rotating shaft; 39, second torsion spring; 40, liquid level window; 41, handle; 42, solenoid valve; 43, bracket; 44, positioning pin; 45, pin hole; 46, slot; 47, sleeve; 48, telescopic rod; 49, liquid outlet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0023] Reference Figure 1-9A surface scratch detection device for touch screen production comprises a base 1, four legs 2, a material trough 3, two fastening grooves 4, two electric slide rails 5 and four inner slide grooves 18, the four legs 2 are respectively fixedly connected to the four corners of the bottom of the base 1, the material trough 3 is arranged in the middle position of the top of the base 1, the two fastening grooves 4 are respectively arranged at the top of both sides of the material trough 3, the two electric slide rails 5 are respectively arranged at both sides of the base 1, the four inner slide grooves 18 are respectively arranged at both ends of the two fastening grooves 4, the insides of the two electric slide rails 5 are slidably connected with sliders 6, the tops of the two sliders 6 are fixedly connected with side frames 7, the same liquid storage tank 8 is fixedly connected between the two side frames 7, the two sides of the bottom of the liquid storage tank 8 are plugged with liquid outlet pipes 22, the tops of the two liquid outlet pipes 22 are provided with electromagnetic valves 42, the bottoms of the two liquid outlet pipes 22 are rotatably connected with the same roller 23, the inner cavity of the roller 23 is connected with the inner cavity of the two liquid outlet pipes 22, the bottom of the roller 23 is provided with evenly distributed liquid outlet holes 49, and the roller 23 is provided with a plurality of rollers 23. The outer part of the cylinder 23 is sleeved with a sponge sleeve 24, the middle inner walls of the two fastening grooves 4 are fixedly connected with sleeves 47, the interiors of the two sleeves 47 are provided with travel switches, the two travel switches are respectively connected in series with the power supply circuits of the two electric slide rails 5, the interiors of the two sleeves 47 are slidably connected with telescopic rods 48, the ends of the two telescopic rods 48 close to each other are fixedly connected with arched steel sheets 16, the opening sides of the two arched steel sheets 16 are respectively facing the telescopic rods 48 adjacent to themselves, and the two arched steel sheets 16 Both ends are rotatably connected with rollers 19, and the four rollers 19 are respectively clamped in the inside of the four inner slide grooves 18. During the deformation of the bow-shaped steel sheet 16, the rollers 19 at both ends roll along the inner walls of the adjacent inner slide grooves 18, thereby limiting the movement trajectory of the two ends of the bow-shaped steel sheet 16 to ensure that the opening of the bow-shaped steel sheet 16 can be opened and the deformation is completed smoothly. The telescopic rod 48 is slidably connected with the sleeve 47, which limits the deformation trajectory of the middle part of the bow-shaped steel sheet 16 and prevents the bow-shaped steel sheet 16 from deflecting during deformation.

[0024] In the present invention, a sealing cover 9 is hinged on the top of the liquid storage tank 8, and two lock buckles 11 are fixedly connected between the sealing cover 9 and the outer wall of the liquid storage tank 8, a liquid injection port 10 is inserted in the middle of the sealing cover 9, a handle 41 is fixedly connected to the top of the sealing cover 9, and a liquid level window 40 is arranged in the middle of one side of the liquid storage tank 8. The liquid level window 40 is made of acrylic material, and a scale is provided on the outer wall of the liquid level window 40. The opening and closing of the liquid storage tank 8 is controlled by the sealing cover 9. The lock buckle 11 is used to tighten the sealing cover 9, and ink can be added to the liquid storage tank 8 through the liquid injection port 10. The liquid level window 40 is used to observe the remaining ink inside the liquid storage tank 8.

[0025] In the present invention, two brackets 43 are fixedly connected to the adjacent sides of the two side frames 7, and positioning pins 44 are fixedly connected to the tops of the four brackets 43. Pin holes 45 are opened at the four corners of the liquid storage tank 8. The four positioning pins 44 are respectively inserted into the inside of the four pin holes 45. The brackets 43 support the liquid storage tank 8 from the bottom. The positioning pins 44 and the pin holes 45 correspond one by one and are inserted into each other, which is convenient for the liquid storage tank 8 to be easily disassembled and accurately installed from the overall device.

[0026] In the present invention, a lamp holder 12 is fixedly connected to one side of the base 1, and a lighting lamp 13 is fixedly connected to the inner wall of the top of the lamp holder 12. When the lighting lamp 13 is powered on, it illuminates the bottom, making it easier for workers to distinguish ink coloring.

[0027] In the present invention, a receiving groove 36 is provided inside the feeding trough 3, and the same second rotating shaft 38 is rotatably connected between the inner walls on both sides of the receiving groove 36, and the outer wall in the middle of the second rotating shaft 38 is fixedly connected to the baffle 25, and the second torsion springs 39 are sleeved at both ends of the second rotating shaft 38, and the ends of the two second torsion springs 39 that are close to each other are fixedly connected to the baffle 25, and the ends of the two second torsion springs 39 that are far away from each other are fixedly connected to the inner wall of the receiving groove 36. When the touch screen is pushed into the feeding trough 3, the baffle 25 forms an obstacle on its path, and the second torsion spring 39 supports the baffle 25 by its own torque, and stops pushing the touch screen when encountering resistance, thereby achieving the purpose of assisting the positioning of the touch screen.

[0028] In the present invention, the side surface of the baffle 25 close to the lighting lamp 13 is perpendicular to the bottom surface of the inner wall of the feeding trough 3, and the inner wall of the bottom of the storage groove 36 is fixedly connected with a positioning slope 37, and the top slope of the positioning slope 37 is perpendicular to the side surface of the baffle 25 away from the lighting lamp 13. After the visual inspection is completed, the thrust is increased and the touch screen is continuously pushed forward, and the second torsion spring 39 is deformed by the force, and the baffle 25 rotates to enter the storage groove 36. The bottom surface of the baffle 25 fits the top slope of the positioning slope 37, and the top surface of the baffle 25 coincides with the plane of the inner wall at the bottom of the feeding trough 3. The touch screen passes smoothly over the baffle 25 until it leaves the feeding trough 3. After the baffle 25 loses pressure, the second torsion spring 39 pushes the baffle 25 to automatically reset, so as to position the next touch screen to be tested.

[0029] In the present invention, a sleeve 27 is fixedly connected to the outer wall of the bottom of the liquid storage tank 8, a sponge strip 32 is inserted into the bottom of the sleeve 27, both ends of the sleeve 27 are fixedly connected to fixed frames 34, a first rotating shaft 33 is rotatably connected between the two fixed frames 34, two supporting columns 28 are fixedly connected to the middle of one side of the sleeve 27, the first rotating shaft 33 is rotatably connected to the two supporting columns 28, both ends of the first rotating shaft 33 are sleeved with first torsion springs 35, the two ends of the two first torsion springs 35 are respectively fixedly connected to the two fixed frames 34, the ends of the two first torsion springs 35 that are close to each other are fixedly connected to a turntable 29, the two turntables 29 are fixedly connected to the first rotating shaft 33, a clamping plate 30 is fixedly connected to the middle of the first rotating shaft 33, one side of the clamping plate 30 is in contact with the side of the sponge strip 32, and the top of the clamping plate 30 away from the sponge strip 32 is provided with evenly distributed anti-skid grooves 31. In the first half of the displacement of the liquid tank 8, the sponge bar 32 contacts the touch screen before the sponge sleeve 24, and the upper surface of the touch screen is pre-cleaned through the friction between the sponge sleeve 24 and the touch screen, and foreign matter attached to the surface of the touch screen is removed to ensure smooth coating of the ink. In the second half of the displacement of the liquid storage tank 8, the sponge bar 32 leaves the touch screen later than the sponge sleeve 24, and can further absorb the residual ink on the surface of the touch screen, eliminating interference for the staff to observe the coloring of the cracks. The clamping plate 30 and the card sleeve 27 jointly clamp the sponge bar 32, and the first torsion spring 35 provides support for the clamping plate 30 to stably clamp it on one side of the sponge bar 32. The top of the clamping plate 30 is pressed. After the clamping plate 30 is subjected to force, it rotates around the first rotating shaft 33 as the axis, and the bottom of the clamping plate 30 is separated from the sponge bar 32. At this time, the sponge bar 32 can be pulled out from the bottom of the card sleeve 27, which is convenient for replacing the sponge bar 32 that absorbs too much ink.

[0030] In the present invention, the middle inner walls of the two fastening grooves 4 are both clamped with fixed blocks 14, and the two sleeves 47 are respectively fixedly connected to the two fixed blocks 14. The middle parts of the two arched steel sheets 16 on the side away from each other are both fixedly connected with slots 46, and the ends of the two telescopic rods 48 close to each other are both fixedly connected with movable blocks 17. The two movable blocks 17 are respectively inserted into the inside of the two slots 46, and the arched steel sheet 16 is connected to the telescopic rod 48 through the movable blocks 17. The sleeve 47 is connected to the fastening groove 4 through the fixed blocks 14. The arched steel sheet 16 can be disassembled by pulling out the fixed blocks 14 and the movable blocks 17 at the same time, so as to facilitate the maintenance or replacement of the arched steel sheet 16 whose elasticity has decayed after long-term use.

[0031] In the present invention, the middle inner walls of the four inner slide grooves 18 are fixedly connected to the limit strips 21, and the middle parts of the four rollers 19 are provided with a slot 20 adapted to the limit strips 21. The four limit strips 21 are respectively clamped in the inside of the four slots 20. The four rollers 19 are all made of steel material, and the four limit strips 21 are all made of permanent magnet material. When the roller 19 rolls along the inner wall of the inner slide groove 18, the slot 20 is always clamped in the inside of the limit strip 21. At the same time, the limit strip 21 made of permanent magnet material has an adsorption effect on the roller 19, further strengthening the limitation on the two ends of the bow-shaped steel sheet 16.

[0032] A surface scratch detection process for touch screen production, the process steps of which include: the touch screen to be inspected is inserted and pushed from one end of a feeding trough 3, the edges on both sides of the touch screen gradually squeeze the arched steel sheet 16, causing the arched steel sheet 16 to deform, and the touch screen is clamped and fastened by the reaction force of the arched steel sheet 16 against the deformation. While the arched steel sheet 16 is deformed, two telescopic rods 48 are respectively inserted into the depth of two sleeves 47 until the travel switch inside the sleeve 47 is triggered, and the two electric slide rails 5 are turned on to the power supply, and the slider 6 drives the side frame 7 and the liquid storage tank 8 to make a period of horizontal reciprocating motion along the electric slide rail 5. During this process, the electromagnetic valve 42 controls the liquid outlet pipe 22 to be turned on, and the gravure ink in the liquid storage tank 8 enters the roller 23 and passes through the outlet The liquid hole 49 penetrates into the interior of the sponge sleeve 24. In the first half of the reciprocating motion of the liquid storage tank 8, the sponge sleeve 24 rolls the touch screen at a uniform speed and evenly applies the gravure ink to the surface of the touch screen. The residual ink is re-absorbed back to the sponge sleeve 24 in the second half of the reciprocating motion of the liquid storage tank 8. The amount of ink remaining in the crack is large and not easy to be fully absorbed, so it will remain and be colored to form a mark, so that the staff can distinguish the cracks during the visual inspection. After completing the visual inspection, the touch screen continues to be pushed along the feed trough 3. After the support between the two arched steel sheets 16 is lost, it begins to reset, and the telescopic rod 48 moves in the direction away from the sleeve 47. The travel switch automatically disconnects the connection between the electric slide rail 5 and the power supply, so that the next touch screen can enter the feed trough 3 for inspection.

[0033] 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 surface scratch detection device for touch screen production, comprising a base (1), four legs (2), a material trough (3), two fastening grooves (4), two electric slide rails (5) and four inner slide grooves (18), wherein the four legs (2) are respectively fixedly connected to the four corners of the bottom of the base (1), the material trough (3) is arranged in the middle position of the top of the base (1), the two fastening grooves (4) are respectively arranged at the top of both sides of the material trough (3), the two electric slide rails (5) are respectively arranged at both sides of the base (1), and the four inner slide grooves (18) are respectively arranged at both ends of the two fastening grooves (4), characterized in that: The two electric slide rails (5) are slidably connected to the inside of the two sliders (6), the tops of the two sliders (6) are fixedly connected to side frames (7), the same liquid storage tank (8) is fixedly connected between the two side frames (7), both sides of the bottom of the liquid storage tank (8) are plugged with liquid outlet pipes (22), the tops of the two liquid outlet pipes (22) are provided with solenoid valves (42), the bottoms of the two liquid outlet pipes (22) are rotatably connected to the same roller (23), the inner cavity of the roller (23) is connected to the inner cavities of the two liquid outlet pipes (22), the bottom of the roller (23) is provided with evenly distributed liquid outlet holes (49), and the outside of the roller (23) is sleeved with a sponge sleeve (2 4), the middle inner walls of the two fastening grooves (4) are fixedly connected with sleeves (47), the interiors of the two sleeves (47) are provided with travel switches, the two travel switches are respectively connected in series with the power supply circuits of the two electric slide rails (5), the interiors of the two sleeves (47) are slidably connected with telescopic rods (48), the ends of the two telescopic rods (48) close to each other are fixedly connected with bow-shaped steel sheets (16), the opening sides of the two bow-shaped steel sheets (16) are respectively facing the telescopic rods (48) adjacent to themselves, and the two ends of the two bow-shaped steel sheets (16) are rotatably connected with rollers (19), and the four rollers (19) are respectively clamped in the insides of the four inner slide grooves (18).

2. A surface scratch detection device for touch screen production according to claim 1, characterized in that: A sealing cover (9) is hingedly connected to the top of the liquid storage tank (8), and two lock buckles (11) are fixedly connected between the sealing cover (9) and the outer wall of the liquid storage tank (8). A liquid injection port (10) is inserted in the middle of the sealing cover (9), and a handle (41) is fixedly connected to the top of the sealing cover (9). A liquid level window (40) is provided in the middle of one side of the liquid storage tank (8), and the liquid level window (40) is made of acrylic material, and a scale is provided on the outer wall of the liquid level window (40).

3. The surface scratch detection device for touch screen production according to claim 1, characterized in that: Two brackets (43) are fixedly connected to the adjacent sides of the two side frames (7), and positioning pins (44) are fixedly connected to the tops of the four brackets (43). Pin holes (45) are provided at four corners of the liquid storage box (8), and the four positioning pins (44) are respectively inserted into the inside of the four pin holes (45).

4. The surface scratch detection device for touch screen production according to claim 1, characterized in that: A lamp holder (12) is fixedly connected to one side of the base (1), and a lighting lamp (13) is fixedly connected to the inner wall at the top of the lamp holder (12).

5. The surface scratch detection device for touch screen production according to claim 4, characterized in that: A receiving groove (36) is provided inside the material feeding groove (3), and a second rotating shaft (38) is rotatably connected between the inner walls on both sides of the receiving groove (36), and a baffle (25) is fixedly connected to the outer wall in the middle of the second rotating shaft (38), and second torsion springs (39) are sleeved at both ends of the second rotating shaft (38), and the ends of the two second torsion springs (39) that are close to each other are fixedly connected to the baffle (25), and the ends of the two second torsion springs (39) that are far away from each other are fixedly connected to the inner wall of the receiving groove (36).

6. The surface scratch detection device for touch screen production according to claim 5, characterized in that: The side surface of the baffle (25) close to the lighting lamp (13) is perpendicular to the bottom surface of the inner wall of the material feeding trough (3), and the inner wall at the bottom of the storage groove (36) is fixedly connected to a positioning slope (37), and the top inclined surface of the positioning slope (37) is perpendicular to the side surface of the baffle (25) away from the lighting lamp (13).

7. The surface scratch detection device for touch screen production according to claim 1, characterized in that: The outer wall of the bottom of the liquid storage box (8) is fixedly connected to a ferrule (27), a sponge strip (32) is inserted into the bottom of the ferrule (27), both ends of the ferrule (27) are fixedly connected to fixing frames (34), a first rotating shaft (33) is rotatably connected between the two fixing frames (34), two supporting columns (28) are fixedly connected to the middle of one side of the ferrule (27), the first rotating shaft (33) is rotatably connected to the two supporting columns (28), and both ends of the first rotating shaft (33) are sleeved with first torsion springs (35). The two ends of the two first torsion springs (35) are respectively fixedly connected to the two fixing frames (34), the ends of the two first torsion springs (35) close to each other are fixedly connected to a rotating disk (29), the two rotating disks (29) are fixedly connected to the first rotating shaft (33), the middle of the first rotating shaft (33) is fixedly connected to a clamping plate (30), one side of the clamping plate (30) is in contact with the side of the sponge strip (32), and the top of the clamping plate (30) away from the sponge strip (32) is provided with uniformly distributed anti-skid grooves (31).

8. The surface scratch detection device for touch screen production according to claim 1, characterized in that: The middle inner walls of the two fastening grooves (4) are both clamped with fixed plug blocks (14), the two sleeves (47) are respectively fixedly connected to the two fixed plug blocks (14), the middle of the two arched steel sheets (16) on the far side are both fixedly connected with slots (46), the ends of the two telescopic rods (48) on the close side are both fixedly connected with movable plug blocks (17), and the two movable plug blocks (17) are respectively inserted into the inside of the two slots (46).

9. The surface scratch detection device for touch screen production according to claim 1, characterized in that: The inner walls of the middle parts of the four inner slide grooves (18) are fixedly connected to the limit strips (21); the middle parts of the four rollers (19) are provided with a slot (20) adapted to the limit strips (21); the four limit strips (21) are respectively snap-fitted to the insides of the four slots (20); the four rollers (19) are made of steel material; and the four limit strips (21) are made of permanent magnet material.

10. A process for detecting surface scratches for touch screen production, applied to a device for detecting surface scratches for touch screen production according to claim 1, wherein the process steps include: inserting and pushing the touch screen to be inspected from one end of a material trough (3), gradually squeezing the edges of the two sides of the touch screen against the arched steel sheet (16), causing the arched steel sheet (16) to deform, and clamping and fastening the touch screen by using the reaction force of the arched steel sheet (16) against the deformation, while the arched steel sheet (16) is deformed, two telescopic rods (48) are respectively inserted into the depth of two sleeves (47) until the travel switch inside the sleeve (47) is triggered, the two electric slide rails (5) are turned on to the power supply, and the slider (6) drives the side frame (7) and the liquid storage tank (8) to make a period of horizontal reciprocating motion along the electric slide rail (5), during which the solenoid valve (42) controls the liquid outlet pipe (22) to be turned on, and the liquid storage tank (8) The gravure ink enters the roller (23) and penetrates into the interior of the sponge sleeve (24) through the liquid outlet hole (49). In the first half of the reciprocating motion of the liquid storage tank (8), the sponge sleeve (24) rolls the touch screen at a uniform speed and evenly applies the gravure ink to the surface of the touch screen. The remaining ink is reabsorbed back into the sponge sleeve (24) in the second half of the reciprocating motion of the liquid storage tank (8). The amount of ink remaining in the crack is large and difficult to be fully absorbed, so it will remain and be colored to form a mark, so that the staff can distinguish the crack during the visual inspection. After the visual inspection is completed, the touch screen continues to be pushed along the feed trough (3). After the support between the two arched steel sheets (16) is lost, it begins to reset. The telescopic rod (48) moves in a direction away from the sleeve (47), and the travel switch automatically disconnects the connection between the electric slide rail (5) and the power supply, so that the next touch screen can enter the feed trough (3) for inspection.

Images