Repair grinding machine for display panel

Abstract

The utility model relates to a repair grinding machine for a display panel. The repair grinding machine comprises a machine head, a gluing assembly and two clamping blocks. The machine head comprises a shell, a new belt wheel disc, a waste belt wheel disc and a grinding belt, the new belt wheel disc and the waste belt wheel disc are arranged on the shell at intervals in the horizontal direction, and the two ends of the grinding belt are wound around the new belt wheel disc and the waste belt wheel disc respectively. The two clamping blocks are arranged in a spaced mode in the horizontal direction, at least one clamping block is movably arranged so that the two clamping blocks can be close to each other or away from each other, and air suction holes used for adsorbing the grinding belt are formed in the clamping blocks. The gluing assembly is movably arranged between the two clamping blocks and used for gluing the grinding belt adsorbed to one of the clamping blocks. And when the belt is broken, the clamping block and the gluing assembly are utilized for automatic splicing, manual disassembly and maintenance are avoided, the shutdown maintenance time is shortened, and then the repair work efficiency of the whole repair grinding machine on the display panel is improved.

Description

Technical Field

[0001] This utility model relates to the field of display device manufacturing technology, and in particular to a rework grinding machine for display panels. Background Technology

[0002] During the manufacturing process of display panels, it is necessary to repair circuit defects on the display panel. In existing technology, a grinding machine is used to grind and eliminate defective circuits. (Refer to...) Figure 1 As shown, a conventional grinding machine includes a head 1', a waste pulley 2', a new pulley 3', a belt pressing assembly 6', and a grinding belt 5'. Two drive shafts are rotatably mounted on the head 1', with the waste pulley 2' and new pulley 3' respectively mounted on the two drive shafts, driving the waste pulley 2' and new pulley 3' to rotate. A guide roller 4' is mounted at the bottom of the head 1'. Before grinding, the grinding belt 5' is wound around the new pulley 3', with one end of the grinding belt 5' wound around the waste pulley 2'. Simultaneously, the grinding belt 5' also bypasses the guide roller 4', which restricts the movement path of the grinding belt 5'. The belt pressing assembly 6' is mounted on the head 1' and includes a liftable pressing head. During grinding, a display panel 7' is positioned below the head 1'. The drive shafts are started to rotate, causing the grinding belt 5' to move from the new pulley 3' towards the waste pulley 2'. The pressure head of the pressure belt assembly 6' descends to press the grinding belt 5' firmly against the rework area of ​​the display panel 7'. The grinding belt 5', after grinding, is coiled onto the waste belt reel 2'.

[0003] The existing grinding machine has the following shortcomings: During grinding operations, the intense friction between the grinding belt 5' and the display panel 7' easily causes the grinding belt 5' to break during operation. Typically, when the grinding belt 5' breaks, the machine head 1' will issue a stop alarm, and then operators must disassemble the machine head 1' to replace the grinding belt 5'. This method results in a long downtime for the grinding machine, affecting the rework efficiency of the display panel 7'. Utility Model Content

[0004] The purpose of this invention is to provide a rework grinding machine for display panels, which can automatically reconnect the grinding belt after a breakage, avoiding long-term downtime for maintenance and improving the efficiency of rework.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A rework polishing machine for display panels is provided, comprising:

[0007] The machine head includes a housing, a new pulley, a waste pulley, and a grinding belt. The new pulley and the waste pulley are horizontally spaced apart from each other in the housing, and the two ends of the grinding belt are respectively wound around the new pulley and the waste pulley.

[0008] Two clamping blocks are arranged horizontally at intervals on one side of the housing. At least one of the clamping blocks is movable so that the two clamping blocks can move closer to each other or further apart. The clamping blocks are provided with suction holes for adsorbing the grinding belt. The two clamping blocks are respectively used to adsorb the grinding belt that hangs freely from the new pulley and the waste pulley after the belt breaks.

[0009] An adhesive application assembly is movably disposed between the two clamping blocks, and the adhesive application assembly is used to apply adhesive to the abrasive belt adsorbed on one of the clamping blocks.

[0010] As a preferred embodiment of the rework and polishing machine for display panels, it also includes a guide rail, on which two of the clamps are mounted, and at least one of the clamps is slidably connected to the guide rail.

[0011] As a preferred embodiment of a rework and polishing machine for display panels, the two clamping blocks are respectively located below the new pulley and the waste pulley. The clamping block located below the new pulley is fixedly connected to the guide rail, and the clamping block located below the waste pulley is slidably connected to the guide rail.

[0012] As a preferred embodiment of the rework grinding machine for display panels, it further includes a support platform for supporting the display panel, the support platform being located below the guide rail, two guide wheels being spaced apart at the bottom of the housing, the grinding belt being wound around the guide wheels, and the portion of the grinding belt located between the two guide wheels being used to grind the display panel, the housing being height-adjustable so that the guide wheels can approach or move away from the support platform through the gap between the two clamping blocks.

[0013] As a preferred embodiment of a rework polishing machine for display panels, the machine head further includes a belt pressing assembly, which includes a pressing head that is vertically and vertically disposed between the two guide wheels. The pressing head is used to press down the polishing belt so that the polishing belt is pressed against the display panel.

[0014] As a preferred embodiment of a rework polishing machine for display panels, the housing includes a main body and extensions. Two extensions are spaced apart at the bottom of the main body. Two guide wheels are respectively disposed at the free ends of the two extensions. The new pulley and the waste pulley are disposed inside the main body. The polishing belt passes through the main body and is wound around the guide wheels.

[0015] As a preferred embodiment of a rework polishing machine for display panels, the adhesive application assembly includes a first drive unit and an adhesive application roller. The first drive unit is connected to the adhesive application roller, and the first drive unit drives the adhesive application roller to selectively move between two clamping blocks. The adhesive application roller is used to apply adhesive to the polishing belt.

[0016] As a preferred embodiment of a rework and polishing machine for display panels, the opposing sides of the two clamping blocks are adsorption surfaces, the air suction holes are disposed on the adsorption surfaces, and a number of extrusion particles are also protruding from the adsorption surfaces, with the extrusion particles on the two clamping blocks being staggered.

[0017] As a preferred embodiment of a rework polishing machine for display panels, a guide plate is inclinedly provided on the top of the clamping block, and the guide plate is used to guide the polishing belt to move to the adsorption surface.

[0018] As a preferred embodiment of a rework polishing machine for display panels, a sensor is provided at the bottom of the clamping block, and the sensor is used to detect whether the polishing belt is present on the adsorption surface.

[0019] The advantages of this utility model compared to the prior art are:

[0020] This utility model discloses a rework and polishing machine for display panels. It incorporates two clamping blocks and an adhesive application assembly. The clamping blocks hold and fix the ends of two broken polishing strips together. The adhesive application assembly then applies glue to one of the polishing strips. Finally, the two clamping blocks are brought together and pressed to reconnect the two polishing strips. In the event of a strip breakage, the clamping blocks and adhesive application assembly automatically reconnect the strips, eliminating the need for manual disassembly and repair. This reduces downtime and improves the overall efficiency of the rework and polishing machine for display panel repair. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of a grinding machine in the prior art.

[0023] Figure 2 This is a schematic diagram of a rework and polishing machine for a display panel according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the display panel before tape breakage repair and splicing in the rework grinding machine, which is an embodiment of this utility model.

[0025] Figure 4 This is a schematic diagram of the re-repair grinding machine splicing of a display panel according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the adhesive application process of the adhesive application component according to an embodiment of the present invention.

[0027] Figure 6 This is a cross-sectional view of the clamping block according to an embodiment of the present utility model.

[0028] Figure 7 This is a schematic diagram of the re-repair grinding machine splicing of a display panel according to another embodiment of the present invention.

[0029] Figure 1 middle:

[0030] 1′, Machine head; 2′, Waste belt pulley; 3′, New belt pulley; 4′, Guide roller; 5′, Grinding belt; 6′, Belt pressing assembly; 7′, Display panel.

[0031] Figures 2 to 7 middle:

[0032] 1. Machine head; 11. Housing; 111. Main body; 112. Extension; 12. New pulley; 13. Waste pulley; 14. Grinding belt; 15. Pressing belt assembly; 151. Press head; 152. Second drive component; 16. Guide wheel; 2. Clamping block; 21. Adsorption surface; 22. Suction hole; 23. Extruded particles; 3. Glue coating assembly; 31. First drive component; 32. Glue coating roller; 33. Base; 4. Guide rail; 41. Lead screw; 5. Bearing platform; 6. Display panel; 7. Guide plate; 8. Sensor. Detailed Implementation

[0033] The advantages and features of this invention, as well as methods of implementing them, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, this invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided merely to complete the disclosure of this invention and to enable those skilled in the art to fully understand its scope, which is defined only by the scope of the claims. The same reference numerals denote the same constituent elements throughout the specification.

[0034] The present invention will now be described in detail with reference to the accompanying drawings.

[0035] like Figures 2 to 5As shown, a rework polishing machine for display panels (hereinafter referred to as the rework polishing machine) is provided for polishing and eliminating defective lines on a display panel 6. The rework polishing machine includes a machine head 1, two clamping blocks 2, and an adhesive application assembly 3. The machine head 1 is used to polish the display panel 6. The machine head 1 includes a housing 11, a new pulley 12, a waste pulley 13, and a polishing belt 14. The new pulley 12 and the waste pulley 13 are horizontally spaced on the housing 11, and both are rotatably mounted on the housing 11. The polishing belt 14 is used to polish the display panel 6, removing defective lines on the display panel 6 through mutual friction between the two. The polishing belt 14 is wound around the new pulley 12, and one end of the polishing belt 14 is wound around the waste pulley 13. Figure 2 The direction indicated by the middle arrow is the direction of movement of the grinding belt 14. During the grinding operation, the new belt pulley 12 and the waste belt pulley 13 rotate, and the grinding belt 14 moves from the new belt pulley 12 to the waste belt pulley 13. That is, before grinding, the grinding belt 14 is coiled on the new belt pulley 12, and after participating in grinding, the grinding belt 14 is coiled on the waste belt pulley 13. The grinding belt 14 comes into contact with and rubs against the display panel 6 during its movement. Due to the intense friction between the grinding belt 14 and the display panel 6, the grinding belt 14 is prone to breakage at the point of contact with the display panel 6. Two clamping blocks 2 are used to join the two broken grinding belts 14 together to achieve the continuation of the broken belt. The two clamping blocks 2 are spaced apart in the horizontal direction, and at least one of the clamping blocks 2 is movable so that the two clamping blocks 2 can move closer or further apart. The clamping blocks 2 are provided with air suction holes 22, through which air is sucked to adsorb the grinding belt 14 onto the clamping blocks 2 so that the grinding belt 14 moves with the clamping blocks 2. Two clamping blocks 2 are located below the new pulley 12 and the waste pulley 13, respectively. When a belt breakage occurs, the two grinding belts 14 hang freely from the new pulley 12 and the waste pulley 13, respectively. The two clamping blocks 2 respectively hold the ends of the two broken grinding belts 14. Then, the two clamping blocks 2 move closer together to squeeze the two grinding belts 14 together, completing the splicing of the grinding belts 14. The adhesive application assembly 3 is used to apply adhesive to the splicing position of the grinding belts 14. The adhesive application assembly 3 is movably disposed between the two clamping blocks 2. When adhesive application is required, the adhesive application assembly 3 moves to the area between the two clamping blocks 2 and applies adhesive to the grinding belt 14 held on one of the clamping blocks 2. After adhesive application, the adhesive application assembly 3 moves away from the two clamping blocks 2 to prevent the two clamping blocks 2 from moving closer together. Through the squeezing of the two clamping blocks 2, the two grinding belts 14 are bonded together with adhesive, completing the splicing of the grinding belts 14.

[0036] Understandably, by setting up two clamping blocks 2 and an adhesive application component 3, the two clamping blocks 2 are used to absorb and fix the ends of the two broken grinding belts 14. Then, the adhesive application component 3 is used to apply glue to one of the grinding belts 14. Finally, the two clamping blocks 2 are brought together and pressed to reconnect the two grinding belts 14. When a belt breaks, the clamping blocks 2 and the adhesive application component 3 automatically reconnect it, avoiding manual disassembly and repair, reducing downtime, and thus improving the overall efficiency of the rework grinding machine in repairing the display panel 6.

[0037] Specifically, the rework grinding machine also includes a guide rail 4, which is used to mount the clamping blocks 2. The guide rail 4 extends horizontally, and the two clamping blocks 2 are mounted on the guide rail 4. The clamping blocks 2 are connected to the slider of the guide rail 4 so that the clamping blocks 2 can slide along the length of the guide rail 4. Correspondingly, the guide rail 4 is also provided with a lead screw 41 and a motor that is driven by the lead screw 41. The lead screw 41 is threadedly connected to the clamping blocks 2, and the motor drives the lead screw 41 to rotate, thereby driving the clamping blocks 2 to slide. In this embodiment, the guide rail 4, the lead screw 41, the clamping blocks 2 and the motor together form a slider-lead screw drive mechanism commonly used in the prior art. Its working principle and connection relationship will not be described in detail here. In order to make the two clamping blocks 2 move closer to each other, at least one of the two clamping blocks 2 needs to be slidably connected to the guide rail 4.

[0038] In one embodiment, reference is made to Figure 3 and Figure 4 As shown, both clamping blocks 2 are slidably connected to the guide rail 4. Correspondingly, the guide rail 4 is provided with two lead screws 41, which are independently rotatable and are threadedly connected to the two clamping blocks 2 respectively. In the initial state, the two clamping blocks 2 are located below the new pulley 12 and the waste pulley 13 respectively. During reconnection, the two lead screws 41 independently drive the two clamping blocks 2 to move towards each other, bringing the two clamping blocks 2 closer together.

[0039] In another embodiment, reference Figure 7 As shown, one of the clamping blocks 2 is slidably connected to the guide rail 4. Specifically, the two clamping blocks 2 are located below the new pulley 12 and the waste pulley 13, respectively. The clamping block 2 located below the new pulley 12 is fixedly connected to the guide rail 4, and the clamping block 2 located below the waste pulley 13 is slidably connected to the guide rail 4. Correspondingly, the lead screw 41 is threadedly connected to the clamping block 2 below the waste pulley 13, so as to drive the corresponding clamping block 2 to move closer to the fixedly installed clamping block 2 through the lead screw 41. In this embodiment, when the two clamping blocks 2 press against the grinding belt 14, both clamping blocks 2 are located below the new pulley 12.

[0040] Specifically, the rework grinder also includes a support platform 5, which supports the display panel 6. The support platform 5 is located below the guide rail 4. Two guide wheels 16 are spaced apart at the bottom of the housing 11, and the two guide wheels 16 are arranged horizontally. The grinding belt 14, located between the new pulley 12 and the waste pulley 13, is wound around the two guide wheels 16, which restrict the movement path of the grinding belt 14. The grinding belt 14 located between the two guide wheels 16 is used to grind the display panel 6. The housing 11 is height-adjustable, i.e., a cylinder, hydraulic cylinder, or electric telescopic component is installed on the housing 11 to drive the housing 11 to move in the vertical direction. When grinding is performed, the housing 11 is lowered, and the two guide wheels 16 pass through the area between the two clamping blocks 2 and approach the support platform 5 below, so that the grinding belt 14 located between the two guide wheels 16 can contact the display panel 6. When the belt breaks, the housing 11 rises and the two guide wheels 16 move to above the plane where the two clamping blocks 2 are located, so that the two clamping blocks 2 can hold the end of the grinding belt 14 and move closer to each other.

[0041] The machine head 1 also includes a pressing assembly 15, which is used to press the grinding belt 14 downward to make a small-area contact (i.e., point contact) between the grinding belt 14 and the display panel 6. The pressing assembly 15 includes a second drive member 152 and a pressing head 151. The second drive member 152 is a cylinder or an electric telescopic member. The pressing head 151 is disposed on the housing 11 and is installed at the output end of the second drive member 152. The second drive member 152 drives the pressing head 151 to move up and down. The pressing assembly 15 is located between two guide wheels 16. During grinding, the pressing head 151 descends and presses down on the grinding belt 14 to make the grinding belt 14 press against the display panel 6. At the same time, the pressing head 151 is designed with a pointed structure and the end of the pressing head 151 is rounded. By pressing down on the grinding belt 14 by the pressing head 151, on the one hand, the grinding belt 14 can be pressed against the display panel 6, and on the other hand, the contact area between the grinding belt 14 and the display panel 6 can be reduced, making the grinding area more precise.

[0042] Specifically, refer to Figure 3As shown, the housing 11 includes a main body 111 and extensions 112. The main body 111 is a hollow structure, with a new pulley 12 and a waste pulley 13 installed inside. Two extensions 112 are vertically arranged, located outside the main body 111 and at the bottom of the main body 111. The two extensions 112 are spaced apart horizontally, and each extension 112 has a guide wheel 16 rotatably mounted at its end opposite the main body 111 (i.e., the free end of the extension 112). A belt pressing assembly 15 is installed inside the main body 111, with a pressing head 151 passing through the main body 111 and extending to the outside, located between the two extensions 112. The main body 111 also has clearance holes for the grinding belt 14 to pass through, allowing the grinding belt 14 to exit from the main body 111 and wrap around the guide wheel 16.

[0043] Specifically, refer to Figure 5 As shown, the glue application assembly 3 includes a first drive unit 31, a glue application roller 32, and a base 33. The first drive unit 31 is an electric telescopic component or a cylinder, and is mounted on the base 33. The glue application roller 32 is mounted on the output end of the first drive unit 31. The glue application roller 32 is provided with a glue outlet and is connected to a glue storage device to input glue into the glue application roller 32 through the glue storage device. The base 33 is mounted on the side opposite to the guide rail 4. A cylinder, hydraulic cylinder, or electric telescopic component is mounted on the base 33 to allow the base 33 to be raised and lowered. The first drive unit 31 is used to drive the glue application roller 32 to selectively move between two clamping blocks 2. When glue application is required, the first drive unit 31 drives the glue application roller 32 to move between the two clamping blocks 2, and the glue application roller 32 abuts against the grinding belt 14 on one of the clamping blocks 2. The base 33 moves up and down to make the glue application roller 32 roll on the grinding belt 14 and apply glue to the grinding belt 14. Subsequently, the first driving component 31 drives the glue-applying roller 32 to retract, preventing obstruction of the two clamping blocks 2 from approaching each other. In this embodiment, the glue-applying operation occurs between the clamping block 2 adsorbing the broken grinding belt 14 and the two clamping blocks 2 pressing the two grinding belts 14 together. That is, when the grinding belt 14 breaks, the two clamping blocks 2 first adsorb and fix the ends of the two grinding belts 14 respectively, then the glue-applying roller 32 moves between the two clamping blocks 2 and applies glue to the grinding belt 14 on one of the clamping blocks 2, and finally the two clamping blocks 2 approach each other and press the ends of the two grinding belts 2 together to achieve reconnection.

[0044] Specifically, refer to Figure 6As shown, the opposing sides of the two clamping blocks 2 are adsorption surfaces 21, and air suction holes 22 are provided on the adsorption surfaces 21. Correspondingly, the clamping blocks 2 are connected to the air extraction device, which extracts air from the clamping blocks 2. Several extrusion particles 23 are also protruding from the adsorption surfaces 21, and the ends of the extrusion particles 23 are sharp. The extrusion particles 23 on the two clamping blocks 2 are staggered. When the two clamping blocks 2 are brought close together and pressed together, the extrusion particles 23 on one clamping block 2 are located in the gaps between several adjacent extrusion particles 23 on the other clamping block 2. By setting the extrusion particles 23, when the two clamping blocks 2 clamp the grinding belt 14, the extrusion particles 23 can compress or puncture the grinding belt 14, so that the two grinding belts 14 can be firmly bonded.

[0045] A guide plate 7 is inclinedly arranged on the top of the clamping block 2, which guides the grinding belt 14. The bottom end of the guide plate 7 is connected to the side of the clamping block 2 near the adsorption surface 21, and the top end of the guide plate 7 extends towards the clamping block 2 away from the adsorption surface 21. When the broken end of the grinding belt 14 is above the clamping block 2, the new pulley 12 or the waste pulley 13 needs to be rotated to make the grinding belt 14 continue to move downward until it can be adsorbed by the clamping block 2. During the descent of the grinding belt 14, the grinding belt 14 can be guided by the guide plate 7 to move smoothly onto the adsorption surface 21. A sensor 8 is provided at the bottom of the clamping block 2. The sensor 8 is an infrared sensor, which is used to detect whether the end of the grinding belt 14 has fallen below the clamping block 2, thereby ensuring that the grinding belt 14 is adsorbed onto the adsorption surface 21.

[0046] Although embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but can be made in various forms, and those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention. Therefore, it should be understood that the above embodiments are exemplary in all respects and not restrictive.

Claims

1. A repair grinder for display panels, characterized by The application relates to a tape grinding head, which comprises a shell, a new tape wheel, a waste tape wheel and a grinding tape, the new tape wheel and the waste tape wheel are arranged on the shell in a horizontal direction, and the two ends of the grinding tape are respectively arranged around the new tape wheel and the waste tape wheel. Two clamping blocks are arranged on one side of the shell in a horizontal direction, at least one of the clamping blocks is movably arranged, so that the two clamping blocks can move close to or away from each other, air suction holes for adsorbing the grinding tape are arranged on the clamping blocks, and the two clamping blocks are respectively used for adsorbing the grinding tape freely falling from the new tape wheel and the waste tape wheel. A glue applying assembly is movably arranged between the two clamping blocks, and the glue applying assembly is used for applying glue to the grinding tape adsorbed on one of the clamping blocks. A guide rail is further arranged, and the two clamping blocks are mounted on the guide rail, and at least one of the clamping blocks is in sliding connection with the guide rail.

2. The display panel rework grinder of claim 1, wherein, The two clamping blocks are respectively arranged below the new tape wheel and the waste tape wheel, the clamping block arranged below the new tape wheel is fixedly connected with the guide rail, and the clamping block arranged below the waste tape wheel is in sliding connection with the guide rail.

3. The display panel rework grinder of claim 2, wherein, A bearing platform for bearing a display panel is further arranged, the bearing platform is arranged below the guide rail, two guide wheels are arranged on the bottom of the shell, the grinding tape is arranged around the guide wheels, the part of the grinding tape between the two guide wheels is used for grinding the display panel, and the shell is arranged in a lifting mode, so that the guide wheels can move close to or away from the bearing platform through the gap between the two clamping blocks.

4. The display panel rework grinder of claim 2, wherein, The head further comprises a tape pressing assembly, the tape pressing assembly comprises a pressing head arranged in a lifting mode between the two guide wheels, and the pressing head is used for pressing the grinding tape, so that the grinding tape is tightly pressed against the display panel.

5. The display panel rework grinder of claim 4, wherein, The shell comprises a main body and an extension, two extensions are arranged on the bottom of the main body, the two guide wheels are arranged at the free ends of the two extensions, the new tape wheel and the waste tape wheel are arranged in the main body, and the grinding tape passes out of the main body and is arranged around the guide wheels.

6. The display panel rework grinder of claim 4, wherein, The glue applying assembly comprises a first driving member and a glue applying roller, the first driving member is connected with the glue applying roller, the first driving member drives the glue applying roller to selectively move between the two clamping blocks, and the glue applying roller is used for applying glue to the grinding tape.

7. The display panel rework grinder of claim 1, wherein, The opposite sides of the two clamping blocks are adsorbing surfaces, the air suction holes are arranged on the adsorbing surfaces, a plurality of extrusion particles are further arranged on the adsorbing surfaces in a protruding mode, and the extrusion particles on the two clamping blocks are distributed in a staggered mode.

8. The display panel rework grinder of any one of claims 1 to 7, wherein, A guide plate is arranged on the top of the clamping block in a slanting mode, and the guide plate is used for guiding the movement of the grinding tape to the adsorbing surface.

9. The display panel rework grinder of claim 8, wherein, A sensor is arranged on the bottom of the clamping block, and the sensor is used for detecting whether the grinding tape exists on the adsorbing surface.

10. The display panel rework grinder of claim 8, wherein, ​

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