Spraying device for workpiece surface cleaning

Abstract

The invention discloses a workpiece surface cleaning and spraying device, and belongs to the field of workpiece surface spraying, and the workpiece surface cleaning and spraying device comprises an operation table, a placing table for placing a to-be-sprayed workpiece is arranged in the operation table, and a fixing assembly for fixing the to-be-sprayed workpiece is arranged on the placing table; a spraying frame used for installing a spraying head and a material storage box used for storing coating are fixedly arranged in the operation table, an installing block is arranged on the spraying frame in a sliding mode, the spraying head is fixedly installed on the installing block, the spraying head is communicated with the material storage box through a connecting pipe, and a driving pump used for driving the coating to flow is installed on the material storage box. A moving assembly used for driving the mounting block to move is arranged on the spraying frame, and a limiting mechanism used for limiting the moving range of the mounting block is further arranged in the operation table. The spraying range of the spray head can be adjusted and controlled according to the size of a workpiece, so that coating waste is avoided, and the spraying effect is improved.

Description

Technical Field

[0001] The present application relates to the field of workpiece surface spraying, and in particular to a workpiece surface cleaning spraying device. Background Art

[0002] Surface cleaning and spraying of workpieces are indispensable and important processes in modern manufacturing, and are widely used in many fields such as automobile manufacturing, aerospace, and electronic equipment. Cleaning and spraying are important steps in the maintenance of robotic arms, which can remove dirt, prevent corrosion, and provide adhesion and smoothness. These processes can not only improve the quality and aesthetics of the product, but also effectively extend the service life of the product, improve production efficiency and economic benefits. With the continuous improvement of the level of industrial automation, the demand for efficient and precise cleaning and spraying equipment is growing, which has promoted the rapid development of related technologies.

[0003] At present, the spraying equipment in some existing related spraying devices is basically fixed, with a small scope of application, and is not easy to adjust accordingly according to the size of the workpiece. It is easy to cause paint waste for relatively small workpieces, and it is easy to cause incomplete spraying for relatively large workpieces, resulting in poor spraying effect. Summary of the invention

[0004] In order to be able to adjust the spraying range of the nozzle according to the size of the workpiece, thereby avoiding paint waste and improving the spraying effect, the present application provides a workpiece surface cleaning spraying device.

[0005] The present application provides a workpiece surface cleaning spraying device that adopts the following technical solution: A device for cleaning and spraying the surface of a workpiece comprises an operating table, wherein a placing table for placing the workpiece to be sprayed is arranged inside the operating table, a fixing component for fixing the workpiece to be sprayed is arranged on the placing table, a storage box for storing paint and a spray rack for installing a spray head are also arranged inside the operating table; a mounting block is slidably provided on the spray rack, a spray head is fixedly installed on the mounting block, the spray head is connected to the storage box via a connecting pipe, and a driving pump for driving the flow of paint is installed in the storage box; a moving component for driving the mounting block to move is arranged on the spray rack, and a limiting mechanism for limiting the moving range of the mounting block is also arranged inside the operating table.

[0006] By adopting the above technical scheme, after the workpiece to be sprayed is cleaned and placed on the placing table, after the workpiece to be sprayed is fixed by the action of the fixing component, the mounting block moves with the nozzle to the workpiece for spraying under the drive of the moving component, and the limiting mechanism can limit the moving range of the mounting block according to the size of the workpiece to be sprayed, so that the nozzle can accurately spray the workpiece to be sprayed, thereby avoiding waste of paint or incomplete spraying, and then can increase the size range of the workpiece to be sprayed, expand the spraying range of the equipment, and improve the spraying effect.

[0007] Preferably, the fixing assembly includes a first motor, a first screw rod, a first guide rod and two clamping plates, a first slide groove and a second slide groove are opened on the placement table, the first screw rod rotates in the first slide groove, the first motor is fixedly installed on the side wall of the placement table, the rotating shaft of the first motor is fixedly connected to one end of the first screw rod, the first guide rod is fixedly arranged in the second slide groove, the two clamping plates are both threadedly connected to the first screw rod and slide on the first guide rod, and the two clamping plates are clamped on the workpiece to be sprayed.

[0008] By adopting the above technical solution, after the workpiece to be sprayed is placed on the placement table, the first motor is started to drive the first screw to rotate, and the two clamping plates move toward the workpiece under the guidance of the first guide rod and clamp on the opposite side walls of the workpiece, thereby fixing the workpiece and being able to fix workpieces of different sizes, thereby improving its scope of application.

[0009] Preferably, the moving assembly includes a second motor, a third motor, a second screw rod, a third screw rod and a moving block. A longitudinal groove is provided on the spray frame, the second screw rod is rotatably connected in the longitudinal groove, the second motor is fixedly installed on the spray frame, the rotating shaft of the second motor is fixedly connected to the second screw rod, and the moving block is threadedly connected to the second screw rod; a transverse groove is provided on the moving block, the third screw rod rotates in the transverse groove, the third motor is fixedly installed on the inner wall of the transverse groove, the third motor is fixedly connected to the third screw rod, the mounting block is slidably connected to the inner wall of the transverse groove, and the mounting block is threadedly connected to the third screw rod.

[0010] By adopting the above technical solution, when the second motor and the third motor are started at the same time, the nozzle is driven by the second motor and the third motor, and the third screw drives the mounting block to reciprocate in the horizontal direction. At the same time, the moving block moves in the vertical direction under the action of the second screw, thereby expanding the movement range of the nozzle in the longitudinal and transverse directions, thereby expanding the size range of the workpiece that can be sprayed.

[0011] Preferably, the limiting mechanism includes two limit plates and a fourth screw rod, a placement groove is provided on the inner wall of the longitudinal groove, two ends of the fourth screw rod are respectively rotated on the inner wall of the placement groove, the two limit plates slide relative to or away from each other in the placement groove and are threadedly connected to the fourth screw rod; a first rotating wheel is fixedly sleeved on the fourth screw rod, a second rotating wheel is fixedly sleeved on the end of the first screw rod away from the first motor, and the first rotating wheel and the second rotating wheel are connected by a first belt; A touch plate 1 is fixedly installed on one side of the two limit plates close to the mounting block, and a touch plate 2 is installed on the two side walls of the mounting block close to the limit block. The touch plate 1 and the touch plate 2 are connected to the control circuit of the third motor and the control circuit of the second motor. The contact between the touch plate 1 and the touch plate 2 can change the direction of the third motor; the limiting mechanism also includes a limiting component for limiting the longitudinal range of movement of the nozzle.

[0012] By adopting the above technical scheme, when the first motor drives the clamping plate to fix the workpiece to be sprayed through the first screw, the first screw rotates to drive the first wheel to rotate, and the second belt drives the second wheel to rotate, and the second wheel rotates to drive the fourth screw to rotate, so that the two limit plates follow the two clamping plates to move synchronously, and then the limit plates can limit the horizontal movement range of the nozzle according to the width of the workpiece; when the mounting block moves to abut the limit plate, the trigger plate 1 and the trigger plate 2 can transmit a signal to the third motor when they are in contact, so that after the mounting block abuts the limit plate, the third motor drives the mounting plate to move away from the abutting limit plate, so that the nozzle can be moved according to the width range of the workpiece to be sprayed, thereby reducing the possibility of paint waste caused by the spraying range being larger than the size of the workpiece to be sprayed.

[0013] Preferably, the limiting component includes multiple detection blocks, multiple limit blocks and multiple airbags, and multiple detection grooves are opened on the opposite side walls of the two clamping plates. The multiple detection blocks slide in the multiple detection grooves respectively, and the detection blocks abut against the workpiece to be sprayed; multiple limit grooves are opened on the inner wall of the longitudinal groove, and the multiple limit blocks slide in the multiple limit grooves respectively, and the multiple airbags are respectively installed in the detection grooves and the limit grooves, the detection blocks abut against the airbags in the detection grooves, and the limit blocks abut against the airbags in the limit grooves, and the airbags in the limit grooves and the airbags in the detection grooves at the same height are connected one by one through air pipes; a detection piece 1 is provided on the limit block, and a detection piece 2 is provided on the moving block, and the detection piece 1 and the detection piece 2 are connected to the circuit of the second motor.

[0014] By adopting the above technical scheme, when the two clamping plates approach each other and clamp the workpiece to be sprayed, the workpiece to be sprayed can push all the detection blocks within the corresponding height range of the clamping plates to move into the detection groove according to its own height, and will push the gas in the airbag in the detection groove to flow through the air pipe to the airbag in the limit groove at the corresponding position, thereby causing the corresponding limit block to move out of the limit groove and protrude from the inner wall of the longitudinal groove. When the moving block moves longitudinally to abut the limit block, the detection piece 1 and the detection piece 2 contact each other to stop the second motor, thereby limiting the spraying range of the nozzle in the longitudinal direction.

[0015] Preferably, a push rod is fixedly connected to the limit block, and the push rod passes through the airbag and out of the side wall of the spray rack. The end of the push rod away from the limit block is fixedly connected to a pull block, and a return spring is fixedly sleeved on the push rod, and the two ends of the return spring are respectively fixedly connected to the side wall of the spray rack and the pull block.

[0016] By adopting the above technical solution, when the clamping plate is away from the workpiece, the push rod pulls the limit block into the limit groove under the push of the reset spring and pushes the gas in the airbag in the limit groove to flow into the airbag in the detection groove, thereby pushing the detection block to protrude from the clamping plate, making it easier for the clamping plate to detect the height of the clamped workpiece when it is clamped and fixed next time.

[0017] Preferably, a collecting bucket is fixedly sleeved on the side wall of the placing table, waste holes are obliquely opened on the inner walls of the first slide groove and the second slide groove and are connected to the collecting bucket, a waste box for collecting waste is arranged in the operating table, and the collecting bucket and the waste box are connected by a pipe.

[0018] By adopting the above technical solution, when the nozzle is spraying, the part of the sprayed paint that is not adhered to the workpiece falls into the collecting bucket, and the paint accumulated in the first chute and the second chute flows into the collecting bucket through the waste hole, and the waste in the collecting bucket flows into the waste box through the pipeline for collection, so that the waste can be centrally recycled or reused, thereby reducing costs and protecting the environment.

[0019] Preferably, a lifting groove is provided on the placement table, a lifting block is slidably disposed in the lifting groove, a cylinder for driving the lifting block to move is disposed in the lifting groove, and two sets of flipping mechanisms for driving the workpiece to flip are disposed on the placement table.

[0020] By adopting the above technical solution, when the workpiece needs to be sprayed on both sides, the staff starts the cylinder, and the cylinder drives the lifting block to move into the lifting groove. The workpiece is flipped under the joint action of the two sets of flipping mechanisms, and the descent of the lifting block can create more space for the workpiece to flip.

[0021] Preferably, the clamping plate is provided with a processor for collecting the state of the detection block, the flipping mechanism comprises a first gear, a second gear, a second belt, and a plurality of bidirectional drive piston rods, the plurality of bidirectional drive piston rods respectively rotate in a plurality of detection slots, the airbag is sleeved on the bidirectional drive piston rod, one end of the bidirectional drive piston rod is fixedly connected to the detection block, and one end of the bidirectional drive piston rod away from the detection block rotates to pass through the clamping plate and is fixedly sleeved with a third gear; The first gear and the second gear both rotate on a side wall of the clamping plate away from the detection block and are arranged upper and lower, the second belt is wound around the first gear and the second gear, the third gear is meshed with the second belt, and the flipping mechanism also includes a rotating component that drives the second gear to rotate.

[0022] By adopting the above technical solution, the processor can receive whether the detection block is pushed into the detection groove and the numbers of all the detection blocks pushed into the detection groove. The processor can calculate the detection block closest to the center height of the workpiece according to the number on the detection block pushed into the detection. After the staff starts the cylinder, the processor receives the information to drive the electric push rod on the detection block closest to the height center of the workpiece to start pushing the two-way driving piston rod to drive the detection block on it to press against the workpiece. Subsequently, under the drive of the rotating component, the second gear rotates to drive the second belt to rotate, the second belt rotates to drive the third gear to rotate, and the third gear rotates to drive the two-way driving piston rod to rotate, thereby driving the detection block pressed against the side wall of the workpiece to rotate, thereby causing the workpiece to flip.

[0023] Preferably, the rotating assembly includes a fourth gear, a third belt, a telescopic sliding rod, a worm gear, a worm gear, a rack and a rotating wheel, the placing table is fixedly connected to a bracket, one end of the telescopic sliding rod is penetrated and rotated on the clamping plate, and the second gear is fixedly sleeved on the telescopic sliding rod, the other end of the telescopic sliding rod is penetrated on the side wall of the bracket and the fourth gear is fixedly sleeved thereon; a driving groove is opened on the inner wall of the lifting slot, the rack is fixedly connected to the lifting block and slides in the driving groove, a rotating rod 1 is rotatably provided on the inner wall of the driving slot, the rotating wheel is fixedly sleeved on the rotating rod 1, and teeth are hinged on the peripheral side wall of the rotating wheel, and the teeth on the rotating wheel are meshed with the rack; the worm gear is fixedly sleeved on one end of the rotating rod 1 away from the rotating wheel, one end of the worm gear is meshed with the worm gear, and the other end rotates and penetrates out of the inner wall of the driving slot and is provided with a fifth gear with the fixed sleeve, and the third belt is wound around the fifth gear and the fourth gear.

[0024] By adopting the above technical solution, when the cylinder drives the lifting block to move, the rack follows the lifting block to move and drives the rotating wheel to rotate. The rotating wheel rotates through the rotating rod 1, the worm gear and the worm to drive the fifth gear to rotate. The fifth gear drives the fourth gear to rotate through the second belt. The rotation of the fourth gear drives the telescopic sliding rod to rotate, thereby driving the second gear to rotate, and then driving the detection block to rotate, completing the flipping of the workpiece.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The workpiece to be sprayed is fixed by the fixing component. The mounting block moves with the nozzle to the workpiece for spraying under the drive of the moving component. The limiting mechanism can limit the moving range of the mounting block according to the size of the workpiece to be sprayed, so that the nozzle can spray the workpiece accurately, thereby avoiding the waste of paint or incomplete spraying. Then, the size range of the workpiece to be sprayed can be increased, the spraying range of the equipment can be expanded, and the spraying effect can be improved; 2. With the help of the first belt, the state of the first screw rod is synchronously transmitted to the fourth screw rod, so that the two limit plates move synchronously with the two clamping plates, and then the limit plates can limit the horizontal movement range of the nozzle according to the width of the workpiece; when the mounting block moves to abut the limit plate, the first trigger plate and the second trigger plate can transmit a signal to the third motor when they are in contact, so that after the mounting block abuts the limit plate, the third motor drives the mounting plate to move away from the abutting limit plate, so that the nozzle can be moved according to the width range of the workpiece to be sprayed, thereby reducing the possibility of paint waste caused by the spraying range being larger than the size of the workpiece to be sprayed; 3. The height of the workpiece to be sprayed pushes all the detection blocks within the corresponding height range on the clamping plate to move into the detection groove and squeezes the gas in the airbag in the detection groove to flow through the air pipe to the airbag in the limit groove at the corresponding position, so that the corresponding limit block moves out of the limit groove and protrudes from the inner wall of the longitudinal groove. When the moving block moves longitudinally to abut the limit block, the detection piece 1 and the detection piece 2 contact each other to stop the third motor, thereby limiting the spraying range of the nozzle in the longitudinal direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in Example 1 of the present application.

[0027] Figure 2 It is a top view cross-sectional schematic diagram in the first embodiment of the present application.

[0028] Figure 3 It is a side sectional view of the placement table in Example 1 of the present application.

[0029] Figure 4 It is a schematic diagram of the protruding spray rack structure in Example 1 of the present application.

[0030] Figure 5 It is a structural schematic diagram of the protrusion limiting mechanism in Example 1 of the present application.

[0031] Figure 6 It is a structural schematic diagram of the protruding flipping mechanism in the second embodiment of the present application.

[0032] 1. Operating table; 2. Placement table; 3. Fixed assembly; 4. Spray rack; 5. Storage box; 6. Mounting block; 7. Spray head; 8. Moving assembly; 9. Limiting mechanism; 10. First motor; 11. First screw rod; 12. First guide rod; 13. Clamping plate; 14. First slide groove; 15. Second slide groove; 16. Second motor; 17. Third motor; 18. Second screw rod; 19. Third screw rod; 20. Moving block; 21. Longitudinal groove; 22. Transverse groove; 23. Limiting plate; 24. Fourth screw rod; 25. Placement groove; 26. First rotating wheel; 27. Second rotating wheel; 28. First belt; 29. ​​Trigger plate 1; 30. Trigger plate 2; 31. Limiting assembly; 32. Detection block; 33. Limiting block; 34. Air tube; 35, detection slot; 36, limit slot; 37, airbag; 38, detection piece 1; 39, detection piece 2; 40, push rod; 41, pull block; 42, reset spring; 43, collection bucket; 44, waste hole; 45, waste box; 46, lifting slot; 47, lifting block; 48, cylinder; 49, flip mechanism; 50, processor; 51, first gear; 52, second gear; 53, second belt; 54, third gear; 55, rotating assembly; 56, two-way drive piston rod; 57, fourth gear; 58, third belt; 59, telescopic sliding rod; 60, worm wheel; 61, worm; 62, rack; 63, rotating wheel; 64, rotating rod 1; 65, driving slot; 66, teeth; 67, bracket; 68, fifth gear. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-6 This application is described in further detail.

[0034] Embodiment 1 like Figure 1 and Figure 2As shown, the embodiment of the present application discloses a device for cleaning and spraying the surface of a workpiece, comprising an operating table 1, a placing table 2 for placing the workpiece to be sprayed is fixedly welded on the upper end face of the operating table 1, a fixing assembly 3 for fixing the workpiece to be sprayed is arranged on the placing table 2, a storage box 5 for storing paint and a spray rack 4 for installing a spray head 7 are fixedly welded on the upper end face of the operating table 1 located beside the placing table 2, the spray rack 4 is fixedly arranged on the upper end face of the storage box 5, and the bottom end of the spray rack 4 is at the same height as the placing table 2. A mounting block 6 is slidably arranged on the spray rack 4, and a spray head 7 is fixedly installed on the end of the mounting block 6 away from the spray rack 4, the spray head 7 is connected to the storage box 5 through a connecting pipe, and the storage box 5 is installed with a driving pump for driving the flow of paint. A moving assembly 8 for driving the movement of the mounting block 6 is arranged on the spray rack 4, and a limiting mechanism 9 for limiting the movement range of the mounting block 6 is also arranged in the operating table 1. A collecting barrel 43 is fixedly mounted on the side wall of the placement table 2. Part of the paint sprayed from the nozzle 7 that is scattered into the air falls into the collecting barrel 43. A waste box 45 for collecting waste is provided on the operating table 1. The collecting barrel 43 and the waste box 45 are connected by a pipeline.

[0035] like Figure 2 and Figure 3 As shown, the fixing assembly 3 includes a first motor 10, a first screw rod 11, a first guide rod 12 and two clamping plates 13. The upper end surface of the placing table 2 is provided with a first slide groove 14 and a second slide groove 15 in the vertical direction downward. The first slide groove 14 and the second slide groove 15 are respectively located at the two ends of the upper end surface of the placing table 2. The first screw rod 11 rotates in the first slide groove 14. The first motor 10 is fixedly installed on the side wall of the placing table 2. The rotating shaft of the first motor 10 is fixedly connected to one end of the first screw rod 11. The first guide rod 12 is fixedly welded in the second slide groove 15. The clamping plate 13 includes a sliding plate and two connecting blocks. The two connecting blocks are fixedly welded to the lower end surface of the sliding plate and the two connecting blocks slide in the first slide groove 14 and the second slide groove 15 respectively. One of the two connecting blocks is threadedly connected to the first screw rod 11, and the other slides on the first guide rod 12. The two clamping plates 13 clamp the workpiece to be sprayed. The inner walls of the first slide groove 14 and the second slide groove 15 are both inclined downward to open a waste hole 44, which is connected to the outside and to the collecting bucket 43. The paint accumulated in the first slide groove 14 and the second slide groove 15 flows into the collecting bucket 43 through the waste hole 44, so as to prevent excessive paint accumulated in the first slide groove 14 and the second slide groove 15 from affecting the sliding of the clamping plate 13 in the first slide groove 14.

[0036] like Figure 1 and Figure 2As shown, the workpiece to be sprayed is placed on the placement table 2 after cleaning, and then the first motor 10 is started, and the first motor 10 starts to drive the first screw 11 to rotate, and the two clamping plates 13 move towards the workpiece under the guidance of the first guide rod 12 and clamp on the opposite side walls of the workpiece, so as to fix the workpiece and can fix workpieces of different sizes. Subsequently, the mounting block 6 moves with the nozzle 7 to the workpiece for spraying under the drive of the moving component 8, and the limiting mechanism 9 can limit the moving range of the mounting block 6 according to the size of the workpiece to be sprayed, so that the nozzle 7 can accurately spray the workpiece to be sprayed, thereby avoiding the waste of paint or incomplete spraying, and then can increase the size range of the workpiece to be sprayed, expand the spraying range of the equipment, and improve the spraying effect.

[0037] like Figure 1 and Figure 4 As shown, the moving assembly 8 includes a second motor 16, a third motor 17, a second screw rod 18, a third screw rod 19 and a moving block 20. A longitudinal groove 21 is opened on the side of the spray rack 4 facing the placement table 2. The axis of the second screw rod 18 is arranged in the vertical direction and is rotatably connected in the longitudinal groove 21. The second motor 16 is fixedly installed on the top of the spray rack 4. The rotating shaft of the second motor 16 is fixedly welded to the top of the second screw rod 18. The moving block 20 is in the shape of a rectangular parallelepiped and is threadedly connected to the second screw rod 18. The width of the moving block 20 is consistent with the width of the longitudinal groove 21, and the side wall of the moving block 20 is slidably connected to the inner wall of the longitudinal groove 21. A transverse groove 22 is provided on the moving block 20, the axis of the third screw rod 19 is arranged in the horizontal direction and rotates in the transverse groove 22, the third motor 17 is fixedly installed on the inner wall of the transverse groove 22, the rotating shaft of the third motor 17 is fixedly welded to one end of the third screw rod 19, one end of the third screw rod 19 rotates on the inner wall of the transverse groove 22, and the mounting block 6 is threadedly connected to the third screw rod 19 and slidably connected to the inner wall of the transverse groove 22.

[0038] like Figure 1 and Figure 4As shown, the limiting mechanism 9 includes two limit plates 23 and a fourth screw 24. A placement groove 25 is provided on the inner wall at the bottom of the longitudinal groove 21 in the horizontal direction. The axis of the fourth screw 24 is in the horizontal direction and rotates in the placement groove 25. The two limit plates 23 are in the shape of a rectangular parallelepiped, and their height is consistent with the height of the longitudinal groove 21. The two limit plates 23 slide relative to or opposite to each other in the placement groove 25 and are threadedly connected to the fourth screw 24. One end of the fourth screw 24 passes through the spray rack 4 and is fixedly sleeved with a first rotating wheel 26. The end of the first screw 11 away from the first motor 10 passes through the placement table 2 and is fixedly sleeved with a second rotating wheel 27. The first rotating wheel 26 and the second rotating wheel 27 are connected by a first belt 28. A touch piece 1 29 is fixedly installed on one side of the two limit plates 23 close to the mounting block 6. The height of the touch piece 1 29 is consistent with the height of the limit plate 23. A touch piece 2 30 is installed on the two side walls of the mounting block 6 close to the two limit plates 23. The touch piece 1 29 and the touch piece 2 30 are connected to the control circuit of the third motor 17. The contact between the touch piece 1 29 and the touch piece 2 30 can change the direction of the rotating shaft of the third motor 17.

[0039] like Figure 2 and Figure 5As shown, the limiting mechanism 9 also includes a limiting component 31 for limiting the range of motion of the nozzle 7 in the longitudinal direction. The limiting component 31 includes a plurality of detection blocks 32, a plurality of limit blocks 33, and a plurality of air pipes 34. A plurality of detection slots 35 are provided on the opposite side walls of the two clamping plates 13. The detection slots 35 on the two clamping plates 13 are rectangular in the horizontal direction. The plurality of detection slots 35 of a single clamping plate 13 are on the same straight line in the vertical direction. The detection slots 35 of the two clamping plates 13 are the same in number and aligned in position. The detection block 32 is in the shape of a rectangular parallelepiped, and the plurality of detection blocks 32 slide in the plurality of detection slots 35 respectively. A plurality of limit slots 36 are provided on the inner wall of the longitudinal groove 21. The plurality of limit slots 36 are arranged in the vertical direction along the inner wall of the longitudinal groove 21. The plurality of limit blocks 33 slide in the plurality of limit slots 36 respectively. The detection blocks 32 and the limit blocks 33 are corresponding to each other and numbered so that the detection blocks 32 and the limit blocks 33 at the same height position have the same number. An airbag 37 is provided in each detection slot 35 and each limit slot 36. The number of detection blocks 32 is twice that of limit blocks 33, and the number of airbags 37 is the sum of the detection blocks 32 and limit blocks 33. The detection block 32 abuts against the airbag 37 in the detection slot 35. The airbag 37 is annular and has a center hole. The limit block 33 abuts against the airbag 37 in the limit slot 36. The airbag 37 in the limit slot 36 and the airbag 37 in the detection slot 35 are connected one by one through the air pipe 34. A push rod 40 is fixedly welded on the limit block 33. The push rod 40 passes through the center hole of the airbag 37 and is arranged to pass out of the side wall of the spray rack 4. A pull block 41 is fixedly welded on one end of the push rod 40 away from the limit block 33. A reset spring 42 is fixedly sleeved on the push rod 40. The two ends of the reset spring 42 are respectively fixedly connected to the side wall of the spray rack 4 and the pull block 41. A detection piece 1 38 is fixedly provided on the lower end surface of the limit block 33 , and a detection piece 2 39 is provided on the upper end surface of the moving block 20 near the limit block 33 . The detection pieces 1 38 and 2 39 are connected to the circuit of the third motor 17 .

[0040] The implementation principle of the first embodiment of the present application is as follows: when the clamping plate 13 clamps and fixes the workpiece to be sprayed, the first screw 11 rotates to drive the second rotating wheel 27 to rotate, the second rotating wheel 27 drives the first rotating wheel 26 to rotate through the first belt 28, and the first rotating wheel 26 drives the fourth screw 24 to rotate, so that the two limit plates 23 move synchronously with the two clamping plates 13, so that the distance between the two limit plates 23 is consistent with the distance between the two clamping plates 13, and is also consistent with the width of the workpiece. When the mounting block 6 moves to touch the limit plate 23 under the drive of the third motor 17, the trigger plate 1 29 and the trigger plate 2 30 can transmit a signal to the third motor 17 when they are in contact to reverse the third motor 17, so that the nozzle 7 can be moved according to the width range of the workpiece to be sprayed, thereby reducing the possibility of paint waste caused by the spraying range being larger than the size of the workpiece to be sprayed. In addition, when the two clamping plates 13 approach each other and clamp the workpiece to be sprayed, the workpiece to be sprayed can push all the detection blocks 32 within the corresponding height range on the clamping plate 13 to move into the detection groove 35 according to its own height. The detection block 32 moves into the detection groove 35 to abut and squeeze the airbag 37 in the detection groove 35, so that the gas inside it flows into the airbag 37 in the limit groove 36 at the corresponding position through the air pipe 34, so that the limit block 33 with the same number as the detection block 32 abutting the workpiece drives the push rod 40 to compress the reset spring 42 and move it outside the limit groove 36 to the inner wall of the longitudinal groove 21. When the moving block 20 touches the limit block 33 during the process of moving upward from the bottom, the detection piece 1 38 and the detection piece 2 39 contact each other to stop the third motor 17, thereby limiting the spraying range of the nozzle 7 in the longitudinal direction. When spraying is completed, the staff moves the clamping plate 13 away from the workpiece, and the squeezing force of the detection block 32 away from the workpiece disappears. The push rod 40 is pushed by the reset spring 42 to pull the limit block 33 to move into the limit groove 36 and push the gas in the airbag 37 in the limit groove 36 to flow into the airbag 37 in the detection groove 35, thereby pushing the detection block 32 to protrude from the clamping plate 13, so that the clamping plate 13 can detect the height of the clamped workpiece when it is clamped and fixed next time, and then limit the moving range of the mounting block 6 according to the width and height of the workpiece to be sprayed, so that the nozzle 7 can accurately spray the workpiece to be sprayed, thereby avoiding waste of paint or incomplete spraying, and then can increase the size range of the workpiece to be sprayed, expand the spraying range of the equipment, and improve the spraying effect.

[0041] Embodiment 2 like Figure 6As shown, the difference between the second embodiment and the first embodiment is that the detection block 32 is changed from a rectangular shape to a cylindrical shape, the detection groove 35 is also cylindrical, and the upper end surface of the clamping plate 13 is provided with a processor 50 for collecting the states of multiple detection blocks 32 thereon. The upper end surface of the placement table 2 is provided with a lifting groove 46 in the vertical direction, and a lifting block 47 slides in the lifting groove 46, and a cylinder 48 is provided in the lifting groove 46 to drive the lifting block 47 to move. Brackets 67 are fixedly welded on both sides of the placement table 2, and a flipping mechanism 49 for driving the workpiece to flip is provided on the placement table 2, and two groups of flipping mechanisms 49 are provided. The flip mechanism 49 includes a first gear 51, a second gear 52, a second belt 53, and a plurality of bidirectional driving piston rods 56; the first gear 51 and the second gear 52 are both rotated on a side wall of the clamping plate 13 away from the detection block 32, and the first gear 51 is located on the top side wall of the clamping plate 13, and the second gear 52 is located on the bottom side wall of the clamping plate 13, and the top end of the second belt 53 is wound around the first gear 51, and the bottom end is wound around the second gear 52. The plurality of bidirectional driving piston rods 56 are arranged one by one with the plurality of detection blocks 32, one end of the bidirectional driving piston rod 56 passes through the center hole of the airbag 37 and is fixedly welded to the detection block 32, and the other end rotates and passes through the clamping plate 13 and is fixedly sleeved with a third gear 54, and the plurality of third gears 54 are arranged in the vertical direction and are all meshed with the second belt 53.

[0042] like Figure 6 As shown, the flip mechanism 49 also includes a rotating assembly 55 for driving the second gear 52 to rotate. The rotating assembly 55 includes a fourth gear 57, a third belt 58, a telescopic sliding rod 59, a worm wheel 60, a worm 61, a rack 62 and a rotating wheel 63. The two ends of the telescopic sliding rod 59 rotate on the bracket 67 and the clamping plate 13 respectively. The fourth gear 57 is fixedly sleeved on one end of the telescopic sliding rod 59 passing through the bracket 67, and the other end of the telescopic sliding rod 59 is fixedly welded to the end surface of the second gear 52. The inner walls of both sides of the lifting groove 46 are provided with driving grooves 65. The rack 62 is fixedly welded on the side wall of the lifting block 47 and slides in the driving groove 65 in the vertical direction. A rotating rod 1 64 is rotatably arranged on the inner wall of the driving groove 65. The rotating wheel 63 is fixedly sleeved on the rotating rod 1 64. The side wall of the rotating wheel 63 is hinged with teeth 66. The teeth 66 on the rotating wheel 63 can only mesh with the rack 62 in one direction. The worm wheel 60 is fixedly sleeved on one end of the rotating rod 64 away from the rotating wheel 63. One end of the worm 61 is meshed with the worm wheel 60, and the other end rotates and passes through the inner wall of the driving groove 65 and is fixedly sleeved with a fifth gear 68. The third belt 58 is wound around the fifth gear 68 and the fourth gear 57.

[0043] The implementation principle of the second embodiment of the present application is: when the workpiece needs to be sprayed, the staff starts the processor 50, and the processor 50 can detect the detection block 32 pushed into the detection groove 35 and the corresponding number, and selects the detection block 32 closest to the center height of the workpiece through calculation, and starts the bidirectional driving piston rod 56 corresponding to the detection block 32 under the number, so that the bidirectional driving piston rod 56 pushes the detection block 32 against the side wall of the workpiece. After that, the processor 50 controls the cylinder 48 to start, and the cylinder 48 starts to drive the lifting block 47 to move slowly downward, the rack 62 follows the lifting block 47 to move and drives the rotating wheel 63 to rotate, the rotating wheel 63 rotates through the rotating rod 1 64, the worm wheel 60 and the worm 61 to drive the fifth gear 68 to rotate, the fifth gear 68 drives the fourth gear 57 to rotate through the third belt 58, the fourth gear 57 rotates to drive the telescopic sliding rod 59 to rotate, thereby driving the second gear 52 to rotate, the second gear 52 rotates to drive the second belt 53 to rotate, the second belt 53 rotates to drive the third gear 54 to rotate, the third gear 54 rotates to drive the two-way driving piston rod 56 to rotate, thereby driving the detection block 32 to drive the workpiece to rotate, complete the flipping of the workpiece, and realize double-sided spraying. The articulated teeth 66 on the rotating wheel 63 make the rack 62 only rotate in one direction during the downward movement process, avoiding starting the rotating assembly 55 when the lifting block 47 rises.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spraying device for cleaning the surface of a workpiece, characterized in that: The invention comprises an operating table (1), wherein a placing table (2) for placing a workpiece to be sprayed is arranged in the operating table (1), a fixing component (3) for fixing the workpiece to be sprayed is arranged on the placing table (2), a material storage box (5) for storing paint and a spray rack (4) for installing a spray head (7) are also arranged in the operating table (1); a mounting block (6) is slidably mounted on the spray rack (4), a spray head (7) is fixedly mounted on the mounting block (6), the spray head (7) is connected to the material storage box (5) through a connecting pipe, and the material storage box (5) is installed with a driving pump for driving the paint to flow; a moving component (8) for driving the mounting block (6) to move is arranged on the spray rack (4), and a limiting mechanism (9) for limiting the moving range of the mounting block (6) is also arranged in the operating table (1); The fixing assembly (3) comprises a first motor (10), a first screw rod (11), a first guide rod (12) and two clamping plates (13); a first slide groove (14) and a second slide groove (15) are provided on the placing table (2); the first screw rod (11) rotates in the first slide groove (14); the first motor (10) is fixedly installed on the side wall of the placing table (2); the rotating shaft of the first motor (10) is fixedly connected to one end of the first screw rod (11); the first guide rod (12) is fixedly arranged in the second slide groove (15); the two clamping plates (13) are both threadedly connected to the first screw rod (11) and slide on the first guide rod (12); the two clamping plates (13) clamp the workpiece to be sprayed; The moving assembly (8) comprises a second motor (16), a third motor (17), a second screw rod (18), a third screw rod (19) and a moving block (20); a longitudinal groove (21) is provided on the spray frame (4); the second screw rod (18) is rotatably connected to the longitudinal groove (21); the second motor (16) is fixedly mounted on the spray frame (4); the rotating shaft of the second motor (16) is fixedly connected to the second screw rod (18); the moving block (20) is threadedly connected to the second screw rod (18); a transverse groove (22) is provided on the moving block (20); the third screw rod (19) is rotatably connected to the transverse groove (22); the third motor (17) is fixedly mounted on the inner wall of the transverse groove (22); the third motor (17) is fixedly connected to the third screw rod (19); the mounting block (6) is slidably connected to the inner wall of the transverse groove (22); the mounting block (6) is threadedly connected to the third screw rod (19); The limiting mechanism (9) comprises two limiting plates (23) and a fourth screw rod (24); a placement groove (25) is provided on the inner wall of the longitudinal groove (21); two ends of the fourth screw rod (24) are respectively rotated on the inner wall of the placement groove (25); the two limiting plates (23) slide relative to or away from each other in the placement groove (25) and are threadedly connected to the fourth screw rod (24); a first rotating wheel (26) is fixedly sleeved on the fourth screw rod (24); a second rotating wheel (27) is fixedly sleeved on the end of the first screw rod (11) away from the first motor (10); the first rotating wheel (26) and the second rotating wheel (27) are connected by a first belt (28); A trigger plate 1 (29) is fixedly mounted on one side of the two limit plates (23) close to the mounting block (6); a trigger plate 2 (30) is mounted on the two side walls of the mounting block (6) close to the limit plates (23); the trigger plate 1 (29) and the trigger plate 2 (30) are connected to the control circuit of the third motor (17); the contact between the trigger plate 1 (29) and the trigger plate 2 (30) can change the direction of the third motor (17); the limiting mechanism (9) also includes a limiting component (31) for limiting the range of motion of the nozzle (7) in the longitudinal direction.

2. A workpiece surface cleaning spraying device according to claim 1, characterized in that: The limiting assembly (31) comprises a plurality of detection blocks (32), a plurality of limit blocks (33) and a plurality of air bags (37); a plurality of detection grooves (35) are respectively provided on opposite side walls of the two clamping plates (13); the plurality of detection blocks (32) slide in the plurality of detection grooves (35) respectively, and the detection blocks (32) abut against the workpiece to be sprayed; a plurality of limit grooves (36) are provided on the inner wall of the longitudinal groove (21); the plurality of limit blocks (33) slide in the plurality of limit grooves (36) respectively, and the plurality of air bags (37) are respectively installed in the detection grooves (35) and the limit grooves (36). The detection block (32) abuts against the airbag (37) in the detection groove (35), the limit block (33) abuts against the airbag (37) in the limit groove (36), and the airbag (37) in the limit groove (36) and the airbag (37) in the detection groove (35) at the same height are connected one by one through the air pipe (34); the limit block (33) is provided with a detection piece 1 (38), and the moving block (20) is provided with a detection piece 2 (39), and the detection piece 1 (38) and the detection piece 2 (39) are connected to the circuit of the second motor (16).

3. A workpiece surface cleaning spraying device according to claim 2, characterized in that: A push rod (40) is fixedly connected to the limit block (33), and the push rod (40) passes through the air bag (37) and out of the side wall of the spray rack (4). One end of the push rod (40) away from the limit block (33) is fixedly connected to a pull block (41). A return spring (42) is fixedly sleeved on the push rod (40), and two ends of the return spring (42) are respectively fixedly connected to the side wall of the spray rack (4) and the pull block (41).

4. The device for spraying and cleaning the surface of a workpiece according to claim 1, characterized in that: A collecting bucket (43) is fixedly sleeved on the side wall of the placing table (2); waste holes (44) are obliquely opened on the inner walls of the first chute (14) and the second chute (15) and are connected to the collecting bucket (43); a waste box (45) for collecting waste is arranged in the operating table (1); and the collecting bucket (43) and the waste box (45) are connected by a pipeline.

5. The device for cleaning and spraying a workpiece surface according to claim 2, characterized in that: The placement table (2) is provided with a lifting groove (46), a lifting block (47) is slidably disposed in the lifting groove (46), a cylinder (48) is disposed in the lifting groove (46) for driving the lifting block (47) to move, and two groups of turning mechanisms (49) are disposed on the placement table (2) for driving the workpiece to turn over.

6. A workpiece surface cleaning spraying device according to claim 5, characterized in that: The clamping plate (13) is provided with a processor (50) for collecting the state of the detection block (32); the flipping mechanism (49) comprises a first gear (51), a second gear (52), a second belt (53), and a plurality of bidirectional drive piston rods (56); the plurality of bidirectional drive piston rods (56) are respectively rotated in a plurality of detection slots (35); the airbag (37) is sleeved on the bidirectional drive piston rod (56); one end of the bidirectional drive piston rod (56) is fixedly connected to the detection block (32); one end of the bidirectional drive piston rod (56) away from the detection block (32) is rotated to pass through the clamping plate (13) and is fixedly sleeved with a third gear (54); The first gear (51) and the second gear (52) are both rotated on a side wall of the clamping plate (13) away from the detection block (32) and are arranged at the upper and lower parts. The second belt (53) is wound around the first gear (51) and the second gear (52). The third gear (54) is meshed with the second belt (53). The flipping mechanism (49) also includes a rotating component (55) for driving the second gear (52) to rotate.

7. A workpiece surface cleaning spraying device according to claim 6, characterized in that: The rotating assembly (55) comprises a fourth gear (57), a third belt (58), a telescopic sliding rod (59), a worm wheel (60), a worm (61), a rack (62) and a rotating wheel (63); the placing platform (2) is fixedly connected with a bracket (67); one end of the telescopic sliding rod (59) is inserted and rotated on the clamping plate (13); and the second gear (52) is fixedly sleeved on the telescopic sliding rod (59); the other end of the telescopic sliding rod (59) is inserted on the side wall of the bracket (67) and the fourth gear (57) is fixedly sleeved thereon; a driving groove (65) is opened on the inner wall of the lifting groove (46); the rack (62) is fixedly connected to the lifting block (47) and slides on the lifting block (47); In the driving groove (65), a rotating rod (64) is rotatably arranged on the inner wall of the driving groove (65), the rotating wheel (63) is fixedly sleeved on the rotating rod (64), and teeth (66) are hinged on the peripheral wall of the rotating wheel (63), and the teeth (66) on the rotating wheel (63) are meshed with the rack (62); the worm wheel (60) is fixedly sleeved on the end of the rotating rod (64) away from the rotating wheel (63), one end of the worm (61) is meshed with the worm wheel (60), and the other end rotates and passes through the inner wall of the driving groove (65) and is fixedly sleeved with a fifth gear (68), and the third belt (58) is wound around the fifth gear (68) and the fourth gear (57).

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