Surface polishing device for sheet metal machining of air conditioner shell

Abstract

The invention belongs to the technical field of polishing devices, and particularly relates to an air conditioner shell sheet metal machining surface polishing device which comprises a base, an operation box and a PLC, and the operation box and the PLC are arranged on the right side wall of the base. When the grinding device is used for grinding the cylindrical air conditioner metal shell, a grinding tool can be completely attached to the curved surface of the shell for grinding work, so that the situation that the curved surface of the air conditioner shell is not ground in place or is not ground uniformly is avoided, and the grinding quality of the cylindrical air conditioner shell is guaranteed; when the curved surface of the air conditioner metal shell is polished, the shape of the polishing assembly can be automatically and adaptively adjusted according to the curved surface degree of the air conditioner metal shell, and it is ensured that the polishing pressure between the polishing assembly and the curved surface is evenly distributed; therefore, the situation of excessive polishing or insufficient polishing of the curved surface of the air conditioner metal shell is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of grinding devices, and in particular relates to a device for grinding the surface of a sheet metal processing of an air conditioner housing. Background Art

[0002] During the sheet metal manufacturing process of the air-conditioning shell, some surface defects such as burrs, flash, scratches, stamping marks, etc. may be produced. Through polishing, these defects that affect the appearance can be effectively removed, making the surface of the air-conditioning shell smoother and flatter, presenting a better visual effect, thereby enhancing the competitiveness of the product in the market and meeting consumers' requirements for the exquisiteness of the product appearance.

[0003] When designing the air-conditioning shell, in order to improve the fashionable and modern appearance, some air-conditioning shells will be designed into a cylindrical shape. After the cylindrical air-conditioning shell is produced, the shell needs to be polished. Since the surface of the cylindrical air-conditioning shell is a curved surface, conventional flat grinding tools are difficult to fit its surface completely, and it is easy to have local inadequate grinding or uneven grinding. For example, using a flat belt grinder to directly grind the cylindrical surface, the middle part of the belt may fit well with the cylindrical surface, but there will be gaps on the edge, resulting in poor grinding effect in these edge areas. In addition, since the cylindrical surface is curved, it is difficult to ensure that the grinding pressure is evenly distributed during the grinding process. For example, when manually grinding, the operator may unconsciously apply different pressures on different parts of the cylinder, such as the top, bottom and sides, resulting in some places on the surface being over-grinded to form depressions, and some places being under-grinded and still having defects.

[0004] Therefore, a surface grinding device for sheet metal processing of an air conditioner casing is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a surface grinding device for sheet metal processing of an air conditioner casing in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: an air conditioner housing sheet metal processing surface grinding device, including a base and an operation box and a PLC controller arranged on the right side wall of the base, and also includes: A connecting frame, fixedly connected to the upper side wall of the base, the side wall of the connecting frame is fixedly connected to a first electric push rod, and the moving end of the first electric push rod is fixedly connected to a grinding assembly via a linear motor and a first pressure sensor; Two vertical plates are symmetrically fixedly connected to the left and right sides of the upper side wall of the base. The side walls of the two vertical plates are fixedly connected with second electric push rods. The moving ends of the two second electric push rods extend out of the vertical plates and are fixedly connected to a motor box. A rotating motor is fixedly connected inside the motor box. The output end of the rotating motor extends out of the motor box and is connected to a clamping assembly.

[0007] Preferably, the polishing assembly includes a polishing box and a polishing belt, the moving end of the first electric push rod is fixedly connected to the linear motor, the moving end of the linear motor is fixedly connected to the upper side wall of the polishing box through a first pressure sensor, the lower side wall of the polishing box is provided with two through holes, the polishing belt is connected end to end and passes through the two through holes, the lower inner wall of the polishing box is fixedly connected to a third electric push rod, the moving end of the third electric push rod is fixedly connected to a lifting plate through a second pressure sensor, the upper side wall of the lifting plate is fixedly connected to a support frame on both sides, and the inner wall of the support frame The grinding wheel is rotatably connected to the frame, and the part of the grinding belt located in the grinding box is sleeved outside the two driving wheels. The rear side wall of the support frame is connected to the driving wheel through a power component. The lower side wall of the grinding box is connected to multiple adjusting rods through multiple shaping components. A pressure seat is provided below the adjusting rod, and the upper side wall of the pressure seat is fixedly connected to the adjusting frame. The lower end of the adjusting rod is located in the adjusting frame and is rotatably connected to the adjusting frame. A T-slot is provided on the lower side wall of the pressure seat, and a guide ring matching the T-slot is fixedly connected to the inner wall of the grinding belt, and the longitudinal section of the guide ring is a T-shaped structure.

[0008] Preferably, the side walls of the leftmost and rightmost pressure seats that are away from each other are fixedly connected with guide wheels, and the side walls of the guide wheels and the driving wheels are provided with annular grooves that match the guide rings.

[0009] Preferably, the power assembly includes a power motor and a cylinder, the power motor is fixedly connected to the rear side wall of the support frame through a bracket, the rear end of the rear axle of the driving wheel extends out of the support frame and is fixedly connected to the cylinder, the inner wall of the cylinder is rotatably connected with a rotating column, the rear end of the rotating column extends out of the cylinder and is fixedly connected to the output end of the power motor, the front and rear side walls of the rotating column are fixedly connected with longitudinal plates, the left and right inner walls of the cylinder are fixedly connected with vertical plates, the same spring is fixedly connected between the longitudinal plate and the vertical plate, the rear side wall of the longitudinal plate located on the rear side is fixedly connected with a conductive block, the conductive block is electrically connected to an external power supply, the rear inner wall of the cylinder is inlaid with a conductive plate, and the conductive plate is electrically connected to a PLC controller.

[0010] Preferably, the shaping assembly includes a shaping cylinder and a lifting seat, the shaping cylinder is fixedly connected to the lower side wall of the polishing box, the lifting seat is fixedly connected to the upper inner wall of the shaping cylinder through a spring, the upper end of the adjusting rod passes through the lower side wall of the shaping cylinder and is fixedly connected to the lower side wall of the lifting seat, the lower side wall of the shaping cylinder is provided with a circular hole matching the adjusting rod, the side wall of the lifting seat is provided with a transverse groove, and a micro electric push rod is fixedly connected in the transverse groove, the moving end of the micro electric push rod is fixedly connected to a rough block, and the inner wall of the shaping cylinder is fixedly connected to a rough plate.

[0011] Preferably, the clamping assembly includes a clamping cylinder and a threaded rod, the clamping cylinder is a cylindrical structure, the clamping cylinder is fixedly connected to the output end of the rotating motor, the threaded rod is rotatably connected to the inner wall of the clamping cylinder, and the left and right sides of the threaded rod have opposite threads, the side wall of the clamping cylinder away from the rotating motor is fixedly connected to a servo motor, the output end of the servo motor and the threaded rod are fixedly connected, the rod wall of the threaded rod is threadedly sleeved with two threaded cylinders, the side wall of the clamping cylinder is provided with a plurality of extension openings, a clamping seat is placed in the extension opening, the side walls of the clamping seat and the threaded cylinder on the opposite side are fixedly connected to a fixing frame, and the same rotating rod is rotatably connected in the two fixing frames located on the same side.

[0012] Preferably, a storage groove is provided on the upper side wall of the base, and a vertical groove is provided on the lower side wall of the storage groove, a lifting electric push rod is fixedly connected in the vertical groove, a lifting seat is fixedly connected to the movable end of the lifting electric push rod, the upper surface of the lifting seat is an arc-shaped structure, and a cylindrical air-conditioning casing is placed in the lifting seat.

[0013] Preferably, a third pressure sensor is embedded in the clamping seat, and the third pressure sensor is electrically connected to the servo motor through a PLC controller.

[0014] Compared with the existing technology, the advantages of a surface grinding device for sheet metal processing of air conditioner shell are: By setting up the grinding component, when using the grinding device to grind the cylindrical metal shell of the air conditioner, the grinding tool and the curved surface of the shell can be made to fit completely together for grinding, thereby avoiding the situation where the curved surface of the air conditioner shell is not ground properly or unevenly, thereby ensuring the grinding quality of the cylindrical air conditioner shell.

[0015] By setting up the shaping component, when grinding the curved surface of the metal shell of the air conditioner, the shape of the grinding component can be automatically adaptively adjusted according to the degree of the curvature of the metal shell of the air conditioner, and the grinding pressure between the grinding component and the curved surface can be evenly distributed, thereby avoiding over-grinding or under-grinding of the curved surface of the metal shell of the air conditioner.

[0016] Through the power assembly that is set up, when the grinding belt on the surface of the grinding assembly is worn out due to long-term use, this situation can be automatically detected and the operator can be notified in time, so that the operator can replace the worn grinding belt in time, thereby ensuring the grinding efficiency of the grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a surface grinding device for sheet metal processing of an air conditioner casing provided by the present invention; Figure 2It is a structural schematic diagram of a clamping assembly in a surface grinding device for sheet metal processing of an air conditioner housing provided by the present invention; Figure 3 It is a schematic diagram of a normal state of a grinding component in a surface grinding device for sheet metal processing of an air conditioner casing provided by the present invention; Figure 4 It is a schematic diagram of the working state of a grinding component in a surface grinding device for sheet metal processing of an air conditioner casing provided by the present invention; Figure 5 It is a structural schematic diagram of a pressure seat and a grinding belt in a surface grinding device for sheet metal processing of an air conditioner casing provided by the present invention; Figure 6 It is a right view of a driving wheel in a surface grinding device for sheet metal processing of an air conditioner housing provided by the present invention; Figure 7 It is a schematic diagram of the internal structure of a cylinder in a surface grinding device for sheet metal processing of an air conditioner housing provided by the present invention; Figure 8 The present invention is a schematic structural diagram of a shaping component in a surface grinding device for sheet metal processing of an air conditioner casing provided by the present invention.

[0018] In the figure: 1 base, 2 operation box, 3 PLC controller, 4 connecting frame, 5 first electric push rod, 6 first pressure sensor, 7 vertical plate, 8 second electric push rod, 9 motor box, 10 rotating motor, 11 grinding assembly, 111 grinding box, 112 grinding belt, 12 through port, 13 third electric push rod, 14 second pressure sensor, 15 lifting plate, 16 support frame, 17 driving wheel, 18 adjusting rod, 19 pressure seat, 20 adjusting frame, 21 T-slot, 22 guide ring, 23 guide wheel, 24 annular groove, 25 power assembly, 251 power electric machine, 252 cylinder, 26 rotating column, 27 longitudinal plate, 28 vertical plate, 29 conductive block, 30 conductive plate, 31 shaping component, 311 shaping cylinder, 312 lifting seat, 32 horizontal groove, 33 micro electric push rod, 34 rough block, 35 rough plate, 36 clamping component, 361 clamping cylinder, 362 threaded rod, 37 servo motor, 38 threaded cylinder, 39 extension port, 40 clamping seat, 41 fixed frame, 42 rotating rod, 43 storage slot, 44 vertical slot, 45 lifting electric push rod, 46 lifting seat, 47 third pressure sensor, 48 linear motor. Implementation

[0019] 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.

[0020] like Figure 1-Figure 8As shown, a surface grinding device for sheet metal processing of an air conditioner housing includes a base 1, an operation box 2 and a PLC controller 3 arranged on the right side wall of the base 1, and also includes: The connecting frame 4 is fixedly connected to the upper side wall of the base 1, and the side wall of the connecting frame 4 is fixedly connected with a first electric push rod 5. The moving end of the first electric push rod 5 is fixedly connected to a grinding assembly 11 through a linear motor 48 and a first pressure sensor 6. The grinding assembly 11 includes a grinding box 111 and a grinding belt 112. The moving end of the first electric push rod 5 is fixedly connected to the linear motor 48. The moving end of the linear motor 48 is fixedly connected to the upper side wall of the grinding box 111 through the first pressure sensor 6. The lower side wall of the grinding box 111 is provided with two through holes 12. The grinding belt 112 is connected end to end and passes through the two through holes 12. The lower inner wall of the grinding box 111 is fixedly connected with a third electric push rod 13. The moving end of the third electric push rod 13 is fixedly connected to a lifting plate 15 through a second pressure sensor 14. The upper side wall of the lifting plate 15 is fixedly connected with a support frame 16 on both sides. The inner wall of the support frame 16 is rotatably connected with a driving wheel 17. The part of the grinding belt 112 located in the grinding box 111 is sleeved outside the two driving wheels 17, and the rear side wall of the support frame 16 is connected to the driving wheel 17 through a power component 25. The lower side wall of the grinding box 111 is connected to multiple adjusting rods 18 through multiple shaping components 31. A pressure seat 19 is provided below the adjusting rod 18, and the upper side wall of the pressure seat 19 is fixedly connected with an adjusting frame 20. The lower end of the adjusting rod 18 is located in the adjusting frame 20 and is rotatably connected to the adjusting frame 20. A T-shaped groove 21 is provided on the lower side wall of the pressure seat 19. A guide ring 22 matching the T-shaped groove 21 is fixedly connected to the inner wall of the grinding belt 112. The longitudinal section of the guide ring 22 is a T-shaped structure. When the grinding device is used to grind the cylindrical metal shell of the air conditioner, the grinding tool and the curved surface of the shell can be completely fitted to perform the grinding work, thereby avoiding the situation that the curved surface of the air conditioner shell is not ground in place or is unevenly ground, thereby ensuring the grinding quality of the cylindrical air conditioner shell. Two vertical plates 7 are symmetrically fixedly connected to the left and right sides of the upper side wall of the base 1. The side walls of the two vertical plates 7 are fixedly connected to the second electric push rods 8. The moving ends of the two second electric push rods 8 extend out of the vertical plates 7 and are fixedly connected to the motor box 9. The interior of the motor box 9 is fixedly connected to the rotating motor 10. The output end of the rotating motor 10 extends out of the motor box 9 and is connected to the clamping assembly 36. The clamping assembly 36 includes a clamping cylinder 361 and a threaded rod 362. The clamping cylinder 361 is a cylindrical structure. The clamping cylinder 361 is fixedly connected to the output end of the rotating motor 10. The threaded rod 362 is rotatably connected to the inside of the clamping cylinder 361. The side wall of the threaded rod 362 is fixedly connected to the servo motor 37 on the side away from the rotating motor 10, and the output end of the servo motor 37 is fixedly connected to the threaded rod 362. The rod wall of the threaded rod 362 is threadedly sleeved with two threaded cylinders 38. The side wall of the clamping cylinder 361 is provided with a plurality of extension openings 39, and a clamping seat 40 is placed in the extension opening 39. The side wall on the opposite side of the clamping seat 40 and the threaded cylinder 38 is fixedly connected with a fixing frame 41, and the same rotating rod 42 is rotatably connected in the two fixing frames 41 on the same side, so as to clamp and fix the air-conditioning casing.

[0021] The side walls of the leftmost pressure seat 19 and the rightmost pressure seat 19 that are away from each other are fixedly connected with guide wheels 23. The side walls of the guide wheel 23 and the driving wheel 17 are both provided with annular grooves 24 that match the guide ring 22, which can guide the rotation direction of the grinding belt 112.

[0022] The power assembly 25 includes a power motor 251 and a cylinder 252. The power motor 251 is fixedly connected to the rear side wall of the support frame 16 through a bracket. The rear end of the rear axle of the driving wheel 17 extends out of the support frame 16 and is fixedly connected to the cylinder 252. The inner wall of the cylinder 252 is rotatably connected with a rotating column 26. The rear end of the rotating column 26 extends out of the cylinder 252 and is fixedly connected to the output end of the power motor 251. The front and rear side walls of the rotating column 26 are fixedly connected to longitudinal plates 27. The inner walls of the left and right sides of the cylinder 252 are fixedly connected to vertical plates 28. The longitudinal plates 27 and the vertical plates 28 are fixedly connected. The cylinder 252 is fixedly connected with the same spring, and the rear side wall of the rear longitudinal plate 27 is fixedly connected with a conductive block 29, which is electrically connected to an external power supply. The rear inner wall of the cylinder 252 is inlaid with a conductive plate 30, which is electrically connected to the PLC controller 3, and can provide power for the grinding belt 112. At the same time, when the grinding belt 112 on the surface of the grinding component 11 is worn due to long-term use, this situation can be automatically detected and the operator can be notified in time, so that the operator can replace the worn grinding belt 112 in time, thereby ensuring the grinding efficiency of the grinding device.

[0023] The shaping assembly 31 includes a shaping cylinder 311 and a lifting seat 312. The shaping cylinder 311 is fixedly connected to the lower side wall of the polishing box 111. The lifting seat 312 is fixedly connected to the upper inner wall of the shaping cylinder 311 through a spring. The upper end of the adjusting rod 18 passes through the lower side wall of the shaping cylinder 311 and is fixedly connected to the lower side wall of the lifting seat 312. The lower side wall of the shaping cylinder 311 is provided with a circular hole that matches the adjusting rod 18. The side wall of the lifting seat 312 is provided with a transverse groove 32, and the transverse groove 32 is fixedly provided with a circular hole that matches the adjusting rod 18. A micro electric push rod 33 is connected, and a rough block 34 is fixedly connected to the movable end of the micro electric push rod 33. A rough plate 35 is fixedly connected to the inner wall of the shaping cylinder 311. When grinding the curved surface of the metal shell of the air conditioner, the shape of the grinding component 11 can be automatically adaptively adjusted according to the degree of the curvature of the metal shell of the air conditioner, and the grinding pressure between the grinding component 11 and the curved surface is ensured to be evenly distributed, thereby avoiding over-grinding or under-grinding of the curved surface of the metal shell of the air conditioner.

[0024] A storage groove 43 is provided on the upper side wall of the base 1, and a vertical groove 44 is provided on the lower side wall of the storage groove 43. A lifting electric push rod 45 is fixedly connected in the vertical groove 44. The movable end of the lifting electric push rod 45 is fixedly connected to a lifting seat 46. The upper surface of the lifting seat 46 is an arc-shaped structure. The cylindrical air-conditioning casing is placed in the lifting seat 46 to facilitate the storage of the lifting seat 46.

[0025] A third pressure sensor 47 is embedded in the clamping seat 40 . The third pressure sensor 47 is electrically connected to the servo motor 37 via the PLC controller 3 , and can detect the squeezing force between the clamping seat 40 and the inner wall of the air conditioner casing.

[0026] The operating principle of the present invention is now described as follows: the air-conditioning casing to be polished is placed above the lifting seat 46, and then the operator transmits a control signal to the PLC controller 3 through the operation box 2. After receiving the control signal, the PLC controller 3 controls the lifting electric push rod 45 to work, and the lifting electric push rod 45 drives the air-conditioning casing to move upward to the set position through the lifting seat 46, so that the air-conditioning casing and the clamping assembly 36 are aligned (the clamping assembly 36 can be replaced according to the structure of the air-conditioning casing), and then the PLC controller 3 controls the second electric push rods 8 on the left and right sides to work, and the second electric push rods 8 on the left and right sides will drive the rotating motor 10 and the clamping assembly 36 to move in the direction close to the air-conditioning casing, so that the clamping assembly The component 36 is inserted into the air conditioner housing. Then, the PLC controller 3 controls the servo motor 37 to work. The servo motor 37 drives the threaded rod 362 to rotate, and drives the two threaded cylinders 38 to move toward each other through the threaded fit. The two threaded cylinders 38 push the clamping seat 40 through the fixed frame 41 and the rotating rod 42, so that the clamping seat 40 squeezes the inside of the air conditioner housing (a rubber layer is provided on the surface of the clamping seat 40 to ensure the friction between the clamping seat 40 and the air conditioner housing). When the third pressure sensor 47 on the surface of the clamping seat 40 detects that the squeezing force between the clamping seat 40 and the air conditioner housing reaches the set pressure value, the third pressure sensor 47 controls the servo motor 37 to stop working through the PLC controller 3, thereby clamping the air conditioner housing. Then the PLC controller 3 controls the first electric push rod 5 to work, and the first electric push rod 5 drives the polishing box 111 downward to a set distance through the first pressure sensor 6, so that the polishing belt 112 extending out of the polishing box 111 contacts the curved surface of the air-conditioning shell, and the polishing belt 112 contacting the air-conditioning shell will drive the corresponding pressure seat 19 to move upward a certain distance, and the pressure seat 19 that contacts the middle area of ​​the air-conditioning shell moves farther upward, so that multiple pressure seats 19 are distributed in an arc shape, and the pressure seat 19 drives the lifting seat 312 to move upward to a certain height in the shaping cylinder 311 through the adjusting frame 20 and the adjusting rod 18. When the first electric push rod 5 drives the polishing box 111 to move downward to the set distance, the PLC controller 3 will simultaneously control multiple micro electric push rods 33 to work simultaneously, and the micro electric push rod 33 will drive the rough block 34 to contact the rough plate 35. Through the friction between the rough block 34 and the rough plate 35, the lifting group, the adjusting rod 18, and the adjusting frame 20 and the position of the pressure seat 19 are fixed, and then the PLC controller 3 detects the extrusion force between the driving wheel 17 and the grinding belt 112 through the second pressure sensor 14. When it is detected that the extrusion force between the driving wheel 17 and the grinding belt 112 is too small, the PLC controller 3 will control the third electric push rod 13 to drive the lifting plate 15 and the grinding wheel to move upward, so that the grinding belt 112 is tightened, and the extrusion force between the driving wheel 17 and the grinding belt 112 is ensured, so that the driving wheel 17 can drive the grinding belt 112 to rotate. Then the PLC controller 3 controls the first electric push rod 5 to work, and the first electric push rod 5 will drive the grinding box 111 to move downward. The grinding box 111 applies a certain pressure to the grinding belt 112 below through the shaping cylinder 311, the adjusting rod 18 and the pressure seat 19, and each pressure seat 19 is relatively fixed at this time to form a whole, and will apply the same pressure to the grinding belt 112 below, so as to ensure that the pressure of the areas where the grinding belt 112 contacts the air conditioner casing is the same; Then the PLC controller 3 controls the power motor 251 to work, the power motor 251 will drive the rotating column 26 to rotate, the rotating column 26 will drive the longitudinal plate 27 to rotate, the longitudinal plate 27 drives the vertical plate 28 and the cylinder 252 to rotate through the extrusion spring, the cylinder 252 will drive the driving wheel 17 to rotate, and the extrusion force between the driving wheel 17 and the grinding belt 112 will drive the grinding belt 112 to rotate, and the grinding belt 112 is used to grind the curved surface of the air conditioner shell. At the same time, the PLC controller 3 controls the linear motor 48 to work, and the linear motor 48 drives the grinding assembly 11 to move back and forth left and right, so that one side of the air conditioner shell can be polished. When the linear motor 48 drives the grinding assembly 11 to grind an area of ​​the air conditioner casing, the PLC controller 3 will control the rotary motors 10 on the left and right sides to work, and the rotary motors 10 will drive the air conditioner casing to rotate a certain angle through the clamping assembly 36, and then repeat the above steps to grind other areas of the air conditioner casing (when the overall curvature of the air conditioner casing is the same, there is no need to adjust the shape of the lower grinding belt 112. When the overall curvature of the air conditioner casing is different, after each area is polished, it is necessary to repeat the above steps and re-adjust the shape of the grinding belt 112); When the grinding belt 112 is worn due to long-term use, the friction between the grinding belt 112 and the air conditioner casing will increase (when the surface of the grinding belt 112 is made of a material with a certain hardness and a granular structure, in the initial use stage, these particles are partially wrapped or do not fully play a role. As the grinding belt 112 wears, the outer layer of material that originally wrapped the particles is worn away, making the particles more prominent. For example, some grinding belts 112 containing diamond grains, during use, some of the surface binders are worn away, and the diamond grains are more obviously exposed. From a microscopic point of view, the exposure of such particles increases the actual contact area between the grinding belt 112 and the workpiece. Because the friction force is related to the contact area, the friction force will be increased to a certain extent, and these protruding particles When the particles come into contact with the workpiece, they will act like tiny "hooks" to more effectively grasp the surface of the workpiece, thereby enhancing the friction). When the power motor 251 drives the rotating column 26 to rotate, the rotating column 26 needs to drive the longitudinal plate 27 to further compress the spring between it and the vertical plate 28, so that there will be enough power to drive the driving wheel 17 to rotate. In the process of further compressing the spring, the longitudinal plate 27 on the rear side will drive the conductive block 29 to contact the conductive plate 30. The conductive block 29 is electrically connected to the external power supply, and the conductive plate 30 is electrically connected to the PLC controller 3. When the conductive block 29 and the conductive plate 30 are in contact, an electrical signal will be transmitted to the PLC controller 3, and the PLC controller 3 will control the buzzer inside the operating box 2 to work, thereby reminding the operator to replace the grinding belt 112.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface grinding device for sheet metal processing of an air conditioner casing, comprising a base (1), an operation box (2) and a PLC controller (3) arranged on the right side wall of the base (1), characterized in that: The invention also comprises: a connecting frame (4) fixedly connected to the upper side wall of the base (1), the side wall of the connecting frame (4) being fixedly connected to a first electric push rod (5), the movable end of the first electric push rod (5) being fixedly connected to a grinding assembly (11) via a linear motor (48) and a first pressure sensor (6); two vertical plates (7) symmetrically fixedly connected to the left and right sides of the upper side wall of the base (1), the side walls of the two vertical plates (7) being fixedly connected to a second electric push rod (8), the movable ends of the two second electric push rods (8) both extending out of the vertical plates (7) and being fixedly connected to a motor box (9), the interior of the motor box (9) being fixedly connected to a rotating motor (10), the output end of the rotating motor (10) extending out of the motor box (9) and being connected to a clamping assembly (36).

2. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 1 is characterized in that: The polishing assembly (11) comprises a polishing box (111) and a polishing belt (112); the movable end of the first electric push rod (5) is fixedly connected to the linear motor (48); the movable end of the linear motor (48) is fixedly connected to the upper side wall of the polishing box (111) via a first pressure sensor (6); the lower side wall of the polishing box (111) is provided with two through openings (12); the polishing belt (112) is connected end to end and passes through the two through openings (12); the lower inner wall of the polishing box (111) is fixedly connected to a third electric push rod (13); the movable end of the third electric push rod (13) is fixedly connected to a lifting plate (15) via a second pressure sensor (14); the upper side wall of the lifting plate (15) is fixedly connected to a support frame (16) on both left and right sides; the inner wall of the support frame (16) is rotatably connected to a driving wheel (17), the part of the grinding belt (112) located in the grinding box (111) is sleeved outside the two driving wheels (17), the rear side wall of the support frame (16) is connected to the driving wheel (17) through a power component (25), the lower side wall of the grinding box (111) is connected to a plurality of adjustment rods (18) through a plurality of shaping components (31), a pressure seat (19) is provided below the adjustment rod (18), the upper side wall of the pressure seat (19) is fixedly connected to the adjustment frame (20), the lower end of the adjustment rod (18) is located in the adjustment frame (20) and is rotatably connected to the adjustment frame (20), the lower side wall of the pressure seat (19) is provided with a T-shaped groove (21), the inner wall of the grinding belt (112) is fixedly connected to a guide ring (22) matching the T-shaped groove (21), and the longitudinal section of the guide ring (22) is a T-shaped structure.

3. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 2 is characterized in that: The side walls of the leftmost pressure seat (19) and the rightmost pressure seat (19) that are away from each other are both fixedly connected with guide wheels (23), and the side walls of the guide wheels (23) and the driving wheel (17) are both provided with an annular groove (24) that matches the guide ring (22).

4. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 2 is characterized in that: The power assembly (25) comprises a power motor (251) and a cylinder (252); the power motor (251) is fixedly connected to the rear side wall of the support frame (16) via a bracket; the rear end of the rear wheel axle of the driving wheel (17) extends out of the support frame (16) and is fixedly connected to the cylinder (252); a rotating column (26) is rotatably connected to the inner wall of the cylinder (252); the rear end of the rotating column (26) extends out of the cylinder (252) and is fixedly connected to the output end of the power motor (251); The front and rear side walls are both fixedly connected with longitudinal plates (27), the left and right inner walls of the cylinder (252) are both fixedly connected with vertical plates (28), a same spring is fixedly connected between the longitudinal plates (27) and the vertical plates (28), a conductive block (29) is fixedly connected to the rear side wall of the longitudinal plate (27) at the rear side, the conductive block (29) is electrically connected to an external power supply, and a conductive plate (30) is inlaid on the rear inner wall of the cylinder (252), the conductive plate (30) is electrically connected to a PLC controller (3).

5. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 2, characterized in that: The shaping assembly (31) comprises a shaping cylinder (311) and a lifting seat (312); the shaping cylinder (311) is fixedly connected to the lower side wall of the polishing box (111); the lifting seat (312) is fixedly connected to the upper inner wall of the shaping cylinder (311) via a spring; the upper end of the adjusting rod (18) passes through the lower side wall of the shaping cylinder (311) and is fixedly connected to the lower side wall of the lifting seat (312); the lower side wall of the shaping cylinder (311) is provided with a circular hole that matches the adjusting rod (18); the side wall of the lifting seat (312) is provided with a transverse groove (32); a micro electric push rod (33) is fixedly connected in the transverse groove (32); a moving end of the micro electric push rod (33) is fixedly connected to a rough block (34); and the inner wall of the shaping cylinder (311) is fixedly connected to a rough plate (35).

6. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 1, characterized in that: The clamping assembly (36) comprises a clamping cylinder (361) and a threaded rod (362); the clamping cylinder (361) is a cylindrical structure; the clamping cylinder (361) is fixedly connected to the output end of the rotating motor (10); the threaded rod (362) is rotatably connected to the inner wall of the clamping cylinder (361); the left and right sides of the threaded rod (362) have opposite thread rotation directions; the side wall of the clamping cylinder (361) away from the rotating motor (10) is fixedly connected to a servo motor (37); the servo motor The output end of the clamping tube (37) is fixedly connected to the threaded rod (362); the rod wall of the threaded rod (362) is threadedly sleeved with two threaded tubes (38); the side wall of the clamping tube (361) is provided with a plurality of extension openings (39); a clamping seat (40) is placed in the extension openings (39); the side wall of the clamping seat (40) and the threaded tube (38) on the opposite side are fixedly connected to a fixing frame (41); and the two fixing frames (41) on the same side are rotatably connected to the same rotating rod (42).

7. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 1, characterized in that: The upper side wall of the base (1) is provided with a storage groove (43), and the lower side wall of the storage groove (43) is provided with a vertical groove (44), a lifting electric push rod (45) is fixedly connected in the vertical groove (44), and the movable end of the lifting electric push rod (45) is fixedly connected to a lifting seat (46), the upper surface of the lifting seat (46) is an arc-shaped structure, and the cylindrical air conditioner casing is placed in the lifting seat (46).

8. The surface grinding device for sheet metal processing of an air conditioner casing according to claim 6, characterized in that: A third pressure sensor (47) is embedded in the clamping seat (40), and the third pressure sensor (47) is electrically connected to the servo motor (37) via the PLC controller (3).

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