A precision pneumatic chuck

Abstract

The present invention discloses a precision pneumatic chuck, which includes a large gear. There is a chuck frame at the rear side of the large gear. A bearing is fixedly connected to the front side of the chuck frame. The rear side of the large gear is fixedly connected to the front side of the bearing. A large flange is fixedly connected to the rear side of the bearing. A through hole is opened at the center of the large flange. There are several cylinders at the rear side of the large flange, and the several cylinders are centered on the center of the large flange. Through the mutual cooperation among components such as a middle plate, a movable plate, a sliding wheel, a lifting plate, a connecting plate, a vertical rod, a movable box, an opening and closing plate, a wing plate, a connecting spring, a reciprocating plate, a second rotating wheel, a first rotating wheel, a moving plate, a short plate, etc., the present invention can initially clean the oil stains, dust and rust on the outer side of the pipe, avoid adhesion on the clamping rollers, resulting in affecting the precision of laser cutting. At the same time, the positions of the brush and the rust removal knife can be swapped, improving the working efficiency of rust removal and dust removal.

Description

Technical Field

[0001] The present invention relates to the technical field of pneumatic chucks, and particularly to a precision pneumatic chuck. Background Art

[0002] A pneumatic chuck is a device that converts the pressure in the air source into a clamping force through the coordinated action of the air source pressure and pneumatic components. A pneumatic chuck usually includes components such as a cylinder, a chuck, and an electric control part. The cylinder is the core component that generates power, the chuck is responsible for converting the force generated by the cylinder into a clamping force on the workpiece, and the electric control part is used to control the opening and closing of the air source and adjust the air pressure to achieve precise control of the clamping force of the chuck. It has a wide range of applications in the fields of machining, aerospace, precision molds, medical devices, etc.

[0003] Laser pipe cutting is a technology that uses a laser beam to process pipes. It can perform precise cutting of various shapes such as straight lines, circles, and oblique lines on the surface of metal pipes. When laser cutting a pipe is required, it is necessary to fix and clamp the outer side of the pipe through a pneumatic chuck to ensure that the pipe will not affect the cutting accuracy due to vibration or deviation during the laser cutting process.

[0004] However, when laser cutting a pipe, if there are phenomena such as rust on the surface of the raw material, it will cause the rust to easily adhere to the clamping rollers during the transmission of the raw material. If not cleaned in time, it will affect the laser cutting accuracy. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A precision pneumatic chuck includes a large gear. There is a chuck frame behind the large gear. A bearing is fixedly connected to the front side of the chuck frame. The large gear is fixedly connected to the front side of the bearing. A large flange is fixedly connected to the rear side of the bearing. A through hole is opened at the center of the large flange. There are several cylinders behind the large flange, and the several cylinders are arranged in a circular array centered on the center of the large flange. Both sides of the several cylinders are fixedly connected with cylinder brackets. The front sides of the several cylinder brackets are fixedly connected to the rear side of the large flange. The power output shafts of the several cylinders are all fixedly connected with bracket sliders. Chuck rollers are installed on the corresponding sides of the several bracket sliders. A crank is jointly installed between every two adjacent bracket sliders. Two protective brackets are fixedly connected to the rear side of the through hole. Several fixing brackets are fixedly connected to the front side of the large gear, and the several fixing brackets are arranged in a circular array centered on the center of the large gear. A protective box is fixedly connected to the front side of the fixing bracket. A rectangular opening is opened near the top on the left side of the protective box. Two cross plates are fixedly connected to the left side of the protective box, and the two cross plates are symmetrically arranged front and back. A collecting wheel is jointly hinged between the two cross plates. There is a winding motor behind the protective box. The right side of the winding motor is fixedly connected with an L-shaped mounting rod, and the other side of the L-shaped mounting rod is fixedly connected to the adjacent cross plate. The power output shaft of the winding motor penetrates through the adjacent cross plate and is fixedly connected to the center of the collecting wheel. Two side plates are fixedly connected to the front and rear sides of the protective box, and the several side plates are symmetrically arranged up and down. An idler wheel is arranged near the top in the inner cavity of the protective box. There is a grinding wheel below the idler wheel. First rotating shafts are respectively arranged through the centers of the idler wheel and the grinding wheel. The front and rear ends of the two first rotating shafts penetrate through the adjacent side plates. Sandpaper is wound around the outside of the collecting wheel. The other side of the sandpaper penetrates through the rectangular opening and is wound around the outside of the idler wheel and the grinding wheel. A fitting wheel is fixedly connected to the bottom of the inner cavity of the rectangular opening. The outside of the sandpaper is in contact with the fitting wheel.

[0007] Preferably, an L-shaped fixing rod is fixedly connected to the top of the protective box, and the other end of the L-shaped fixing rod is fixedly connected to an installation box. Two clamping plates are fixedly connected to the front and rear sides of the installation box respectively. Every two adjacent clamping plates are symmetrically arranged up and down. A limiting rod is jointly fixed between the two clamping plates. A slider is sleeved on the outside of the limiting rod near the top end. Linking plates are fixedly connected to the left sides of the two sliders. A rust removing knife is jointly fixed between the two linking plates.

[0008] Preferably, several second rotating wheels are hinged to the front side of the inner cavity of the installation box. The several second rotating wheels are arranged in a rectangular array. A first rotating wheel is hinged between every two adjacent second rotating wheels. A belt is jointly wound around the outside of the several second rotating wheels and the first rotating wheels. A moving plate is fixedly connected to the outside of the belt near the front side. The front side of the moving plate is fixedly connected to the rust removing knife.

[0009] Preferably, there is a synchronous motor near the bottom at the front side of the installation box. The right side of the synchronous motor is fixedly connected with an L-shaped connecting rod, and the other end of the L-shaped connecting rod is fixedly connected to the installation box. The power output shaft of the synchronous motor penetrates through the inner cavity of the installation box and fixedly penetrates through the inner cavity of the center of the first rotating wheel located below.

[0010] Preferably, there is a movable box at the front side of the installation box, and there is a movable box near the bottom at the left side of the installation box. Vertical rods are fixedly connected near the four corners at the rear side of the movable box. A lifting plate is sleeved outside several of the vertical rods. The lifting plate is located in the inner cavity of the installation box. A connecting plate is fixedly connected to the rear ends of every two adjacent vertical rods. An opening is formed in the inner cavity of the lifting plate. A short plate is fixedly connected to the right side of the lifting plate. The short plate is fixedly connected to the outer side of the belt near the rear side. A middle plate is fixedly connected to the center at the rear side of the inner cavity of the installation box. A guiding opening is formed in the inner cavity of the middle plate. The central part of the guiding opening is trapezoidal. A movable plate is fixedly connected to the rear side of the movable box. The rear end of the movable plate penetrates through the guiding opening and is hinged with a sliding wheel. The outer side of the sliding wheel is attached to the inner cavity of the guiding opening.

[0011] Preferably, an insertion tube is inserted into the center at the top of the movable box. A partition plate is fixedly connected near the top in the inner cavity of the movable box. Several discharge ports are formed in the inner cavity of the partition plate, and several of the discharge ports are linearly arranged in sequence from left to right. The inner cavities of several of the discharge ports are each attached with a switching plate. Wings are fixedly connected to the left and right sides of each switching plate. Connecting springs are fixedly connected to the bottoms of the two wings, and the bottom ends of the connecting springs are fixedly connected to the partition plate. Intermediate plates are fixedly connected to the front sides of several of the switching plates. Reciprocating plates are fixedly connected to the front sides of several of the intermediate plates. A lifting rod is fixedly connected to the center at the top of the reciprocating plate. The top end of the lifting rod penetrates through the inner cavity of the insertion tube. A limiting groove is formed near the top at the rear side in the inner cavity of the movable box. A clamping rod is fixedly connected to the rear side of the lifting rod, and the rear end of the clamping rod is slidably connected to the inner cavity of the limiting groove.

[0012] Preferably, several dye tubes are fixedly connected to the bottom of the partition plate, and several of the dye tubes are linearly arranged in sequence from left to right. The discharge ports and the inner cavities of the dye tubes are in mutual communication. Brushes are fixedly connected to the bottom ends of several of the dye tubes. Mounting plates are fixedly connected to the front and rear sides of several of the brushes, and the left and right sides of the two mounting plates are fixedly connected to the inner side walls of the movable box.

[0013] Preferably, a welding plate is fixedly connected to the front side of the insertion tube. A return spring is fixedly connected to the top of the welding plate. A swing plate is hinged to the top end of the lifting rod. The top end of the return spring is fixedly connected to the bottom of the swing plate. A hinge plate is fixedly connected to the center at the top of the movable box. The hinge plate is hinged with the swing plate. A fitting plate is fixedly connected to the front side near the top of the middle plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. Through the mutual cooperation among components such as the median plate, movable plate, sliding wheel, lifting plate, connecting plate, vertical rod, movable box, opening and closing plate, wing plate, connecting spring, reciprocating plate, second rotating wheel, first rotating wheel, moving plate, short plate, etc., the present invention can initially clean the oil stains, dust and rust on the outer side of the pipe, avoid adhesion to the clamping rollers, which may affect the accuracy of laser cutting. At the same time, the positions of the brush and the rust removal knife can be exchanged, improving the working efficiency of rust removal and dust removal;

[0016] 2. Through the mutual cooperation among components such as the swinging plate, inserting pipe, lifting pull rod, reset spring, welding plate, hinged plate, etc., the present invention can achieve that when the movable box and the rust removal knife exchange positions, the cleaning agent on the top of the partition plate can dye the brush through the dyeing pipe, facilitating the cleaning of the next pipe. Through the mutual cooperation among components such as the fixing frame, winding motor, cross plate, collecting wheel, fitting wheel, idler wheel, grinding wheel, etc., the present invention can achieve secondary grinding of the outer side of the pipe when the initial cleaning of the pipe is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a rear view of the structure of the present invention;

[0019] Figure 3 is a schematic structural diagram of the component protection box of the present invention;

[0020] Figure 4 is a bottom view of the structure of the component protection box of the present invention;

[0021] Figure 5 is a schematic structural diagram of the internal part of the component installation box of the present invention;

[0022] Figure 6 is a split view of the internal structure of the component installation box of the present invention;

[0023] Figure 7 is a schematic structural diagram of the movable box component of the present invention;

[0024] Figure 8 is Figure 7 the enlarged view at A in

[0025] Figure 9 is Figure 7 the enlarged view at B in

[0026] Reference numerals in the figure: 1, large gear; 2, bearing; 3, large flange; 4, chuck holder; 5, L-shaped fixing rod; 6, rust removal knife; 7, installation box; 8, protection box; 9, cylinder; 10, cylinder bracket; 11, chuck roller; 12, bracket slide; 13, crank; 14, protection bracket; 15, intermediate plate; 16, fixing frame; 17, winding motor; 18, cross plate; 19, collecting wheel; 20, fitting wheel; 21, sandpaper; 22, grinding wheel; 23, side plate; 24, idler wheel; 25, movable box; 26, brush; 27, lifting plate; 28, vertical rod; 29, connecting plate; 30, L-shaped connecting rod; 31, synchronous motor; 32, limiting rod; 33, slider; 34, clamping plate; 35, linkage plate; 36, L-shaped mounting rod; 37, middle plate; 38, fitting plate; 39, movable plate; 40, dye tube; 41, mounting plate; 42, partition; 43, sliding wheel; 44, belt; 45, moving plate; 46, first rotating wheel; 47, second rotating wheel; 48, reciprocating plate; 49, swinging plate; 50, hinged plate; 51, insertion tube; 52, lifting rod; 53, clamping rod; 54, short plate; 55, welding plate; 56, return spring; 57, opening and closing plate; 58, wing plate; 59, connecting spring. Detailed implementation manners

[0027] Please refer to Figures 1-9 , the present invention provides a technical solution:

[0028] A precision pneumatic chuck, comprising a large gear 1. There is a chuck frame 4 at the rear side of the large gear 1. A bearing 2 is fixedly connected to the front side of the chuck frame 4. The rear side of the large gear 1 is fixedly connected to the front side of the bearing 2. A large flange 3 is fixedly connected to the rear side of the bearing 2. A through hole is opened at the center of the large flange 3. There are several cylinders 9 at the rear side of the large flange 3, and the several cylinders 9 are arranged in a circular array centered on the center of the large flange 3. Both sides of the several cylinders 9 are fixedly connected with cylinder brackets 10. The front sides of the several cylinder brackets 10 are all fixedly connected to the rear side of the large flange 3. The power output shafts of the several cylinders 9 are all fixedly connected with bracket sliders 12. Chuck rollers 11 are installed on the corresponding sides of the several bracket sliders 12. A crank 13 is jointly installed between every two adjacent bracket sliders 12. Two protective brackets 14 are fixedly connected to the rear side of the through hole. Several fixing frames 16 are fixedly connected to the front side of the large gear 1, and the several fixing frames 16 are arranged in a circular array centered on the center of the large gear 1. A protective box 8 is fixedly connected to the front side of the fixing frames 16. A rectangular opening is opened at the left side of the protective box 8 near the top. Two cross plates 18 are fixedly connected to the left side of the protective box 8, and the two cross plates 18 are symmetrically arranged front and back. A collecting wheel 19 is jointly hinged between the two cross plates 18. There is a winding motor 17 at the rear side of the protective box 8. An L-shaped mounting rod 36 is fixedly connected to the right side of the winding motor 17. The other side of the L-shaped mounting rod 36 is fixedly connected to the adjacent cross plate 18. The power output shaft of the winding motor 17 penetrates through the adjacent cross plate 18 and is fixedly connected to the center of the collecting wheel 19. Two side plates 23 are fixedly connected to both the front and rear sides of the protective box 8, and the several side plates 23 are symmetrically arranged up and down. An idler wheel 24 is arranged near the top in the inner cavity of the protective box 8. A grinding wheel 22 is arranged below the idler wheel 24. First rotating shafts are respectively penetrated through the centers of the idler wheel 24 and the grinding wheel 22. The front and rear ends of the two first rotating shafts penetrate through the adjacent side plates 23. Sandpaper 21 is wound around the outside of the collecting wheel 19. The other side of the sandpaper 21 penetrates through the rectangular opening and is wound around the outside of the idler wheel 24 and the grinding wheel 22. A fitting wheel 20 is fixedly connected to the bottom of the inner cavity of the rectangular opening. The outside of the sandpaper 21 is in contact with the fitting wheel 20.

[0029] A fixing rod 5 in an L shape is fixedly connected to the top of the protective box 8. The other end of the L-shaped fixing rod 5 is fixedly connected to an installation box 7. Two clamping plates 34 are fixedly connected to both the front and rear sides of the installation box 7. Every two adjacent clamping plates 34 are symmetrically arranged up and down. A limiting rod 32 is fixedly connected between the two clamping plates 34. A slider 33 is sleeved on the outer side of the limiting rod 32 near the top. A linkage plate 35 is fixedly connected to the left side of each of the two sliders 33. A rust-removing knife 6 is fixedly connected between the two linkage plates 35. A number of second rotating wheels 47 are hinged to the front side of the inner cavity of the installation box 7. The number of second rotating wheels 47 are arranged in a rectangular array. A first rotating wheel 46 is hinged between every two adjacent second rotating wheels 47. A belt 44 is wound around the outer sides of the number of second rotating wheels 47 and the first rotating wheels 46. A moving plate 45 is fixedly connected to the outer side of the belt 44 near the front side. The front side of the moving plate 45 is fixedly connected to the rust-removing knife 6. A synchronous motor 31 is provided near the bottom of the front side of the installation box 7. The right side of the synchronous motor 31 is fixedly connected to an L-shaped connecting rod 30. The other end of the L-shaped connecting rod 30 is fixedly connected to the installation box 7. The power output shaft of the synchronous motor 31 penetrates through the inner cavity of the installation box 7 and fixedly penetrates through the inner cavity of the center of the first rotating wheel 46 located below. There is a movable box 25 on the front side of the installation box 7. There is a movable box 25 near the bottom of the left side of the installation box 7. Vertical rods 28 are fixedly connected to the four corners near the rear side of the movable box 25. A lifting plate 27 is sleeved on the outer sides of the number of vertical rods 28. The lifting plate 27 is located in the inner cavity of the installation box 7. A connecting plate 29 is fixedly connected between the rear ends of every two adjacent vertical rods 28. An opening is formed in the inner cavity of the lifting plate 27. A short plate 54 is fixedly connected to the right side of the lifting plate 27. The short plate 54 is fixedly connected to the outer side of the belt 44 near the rear side. A middle plate 37 is fixedly connected to the center of the rear side of the inner cavity of the installation box 7. A guiding port is formed in the inner cavity of the middle plate 37. The central part of the guiding port is trapezoidal. A movable plate 39 is fixedly connected to the rear side of the movable box 25. The rear end of the movable plate 39 penetrates through the guiding port and is hinged to a sliding wheel 43. The outer side of the sliding wheel 43 is attached to the inner cavity of the guiding port.

[0030] A plug tube 51 is inserted at the center of the top of the movable box 25. A partition plate 42 is fixedly connected near the top inside the movable box 25. A number of discharge ports are formed inside the partition plate 42, and the number of discharge ports are linearly arranged in sequence from left to right. The inner cavities of the number of discharge ports are all attached with opening and closing plates 57. Wings 58 are fixedly connected to both the left and right sides of the opening and closing plate 57. Connecting springs 59 are fixedly connected to the bottoms of the two wings 58, and the bottom ends of the connecting springs 59 are fixedly connected to the partition plate 42. Intermediate plates 15 are fixedly connected to the front sides of the number of opening and closing plates 57. Reciprocating plates 48 are fixedly connected to the front sides of the number of intermediate plates 15. A lifting rod 52 is fixedly connected to the center of the top of the reciprocating plate 48. The top end of the lifting rod 52 penetrates through the inner cavity of the plug tube 51. A limiting groove is formed near the top at the rear side inside the movable box 25. A clamping rod 53 is fixedly connected to the rear side of the lifting rod 52, and the rear end of the clamping rod 53 is slidably connected to the inner cavity of the limiting groove. A number of dye tubes 40 are fixedly connected to the bottom of the partition plate 42, and the number of dye tubes 40 are linearly arranged in sequence from left to right. The discharge ports are in mutual communication with the inner cavities of the dye tubes 40. Brushes 26 are fixedly connected to the bottom ends of the number of dye tubes 40. Mounting plates 41 are fixedly connected to both the front and rear sides of the number of brushes 26, and both the left and right sides of the two mounting plates 41 are fixedly connected to the inner side walls of the movable box 25. A welding plate 55 is fixedly connected to the front side of the plug tube 51. A return spring 56 is fixedly connected to the top of the welding plate 55. A swing plate 49 is hinged to the top end of the lifting rod 52. The top end of the return spring 56 is fixedly connected to the bottom of the swing plate 49. A hinge plate 50 is fixedly connected to the center of the top of the movable box 25. The hinge plate 50 is hinged to the swing plate 49. A fitting plate 38 is fixedly connected to the front side near the top of the middle plate 37.

[0031] Working principle: Before the pipe is clamped, it can enter from the front side direction of the large gear 1 and drive the large gear 1 to rotate through the external gear. When the large gear 1 rotates, it can drive the installation box 7 to rotate. When several installation boxes 7 rotate, several brushes 26 can contact the outer side of the pipe. Since there is a cleaning agent inside several brushes 26, the oil stains and dust on the outer side of the pipe can be processed. When the oil stains and dust on the outer side of the pipe are processed, the synchronous motor 31 can be started. The synchronous motor 31 can drive the first rotating wheel 46 located below to rotate through the power output shaft. The first rotating wheel 46 located below can drive the remaining first rotating wheels 46 and the second rotating wheels 47 to rotate through the belt 44. When the belt 44 moves, the lifting plate 27 can be driven to move upward through the short plate 54, and the rust removal knife 6 can be driven to move downward through the moving plate 45. When the lifting plate 27 moves upward, the movable box 25 can be driven to move upward through several vertical rods 28. When the movable box 25 moves upward, the sliding wheel 43 can be driven to move upward through the movable plate 39. When the sliding wheel 43 moves upward and contacts the trapezoidal part of the guiding port, it can move into the inner cavity of the installation box 7 during the movement process, so as to avoid collision when moving in the opposite direction to the rust removal knife 6. When the movable box 25 is about to move to the limit distance, the swing plate 49 can contact the fitting plate 38, thereby driving the swing plate 49 to swing. When the swing plate 49 swings, the lifting rod 52 can be driven to move upward. When the lifting rod 52 moves upward, the reciprocating plate 48 can be driven to move upward. When the reciprocating plate 48 moves upward, several opening and closing plates 57 can be driven to move upward through several intermediate plates 15. When the opening and closing plates 57 move upward, they can be separated from the inner cavity of the discharge port, so that the cleaning agent on the top of the partition plate 42 can contact the brush 26 through the dye pipe 40. When the rust removal knife 6 falls and contacts the pipe, the rust on the outer side of the pipe can be scraped off. When the pipe continues to move backward, the outer side of the pipe can be polished through the sandpaper 21 to complete the secondary cleaning.

Claims

1. A precision pneumatic chuck, comprising a large gear (1), characterized in that: There is a chuck holder (4) at the rear side of the large gear (1). A bearing (2) is fixedly connected to the front side of the chuck holder (4). The rear side of the large gear (1) is fixedly connected to the front side of the bearing (2). A large flange (3) is fixedly connected to the rear side of the bearing (2). A through hole is opened at the center of the large flange (3). There are several cylinders (9) at the rear side of the large flange (3), and the several cylinders (9) are arranged in a circular array with the center of the large flange (3) as the center. Both sides of the several cylinders (9) are fixedly connected with cylinder brackets (10). The front sides of the several cylinder brackets (10) are fixedly connected to the rear side of the large flange (3). The power output shafts of the several cylinders (9) are all fixedly connected with bracket sliding seats (12). Chuck rollers (11) are installed on the corresponding sides of the several bracket sliding seats (12). A crank (13) is jointly installed between every two adjacent bracket sliding seats (12). Two protective brackets (14) are fixedly connected to the rear side of the through hole. Several fixing brackets (16) are fixedly connected to the front side of the large gear (1), and the several fixing brackets (16) are arranged in a circular array with the center of the large gear (1) as the center. A protective box (8) is fixedly connected to the front side of the fixing brackets (16). A rectangular opening is opened at the top near the left side of the protective box (8). Two cross plates (18) are fixedly connected to the left side of the protective box (8), and the two cross plates (18) are symmetrically arranged front and back. A collecting wheel (19) is jointly hinged between the two cross plates (18). There is a winding motor (17) at the rear side of the protective box (8). An L-shaped mounting rod (36) is fixedly connected to the right side of the winding motor (17), and the other side of the L-shaped mounting rod (36) is fixedly connected to the adjacent cross plate (18). The power output shaft of the winding motor (17) penetrates through the adjacent cross plate (18) and is fixedly connected to the center of the collecting wheel (19). Two side plates (23) are fixedly connected to both the front and rear sides of the protective box (8), and the several side plates (23) are symmetrically arranged up and down. An idler wheel (24) is arranged near the top inside the protective box (8). A grinding wheel (22) is arranged below the idler wheel (24). First rotating shafts are respectively arranged through the centers of the idler wheel (24) and the grinding wheel (22). Both the front and rear ends of the two first rotating shafts penetrate through the adjacent side plates (23). Sandpaper (21) is wound around the outside of the collecting wheel (19). The other side of the sandpaper (21) penetrates through the rectangular opening and is wound around the outside of the idler wheel (24) and the grinding wheel (22). A fitting wheel (20) is fixedly connected to the bottom inside the rectangular opening, and the outside of the sandpaper (21) is in contact with the fitting wheel (20); A protective box (8) is fixedly connected to the top of an L-shaped fixing rod (5), the other end of the L-shaped fixing rod (5) is fixedly connected to a mounting box (7), two clamping plates (34) are fixedly connected to both the front and rear sides of the mounting box (7), every two adjacent clamping plates (34) are symmetrically arranged up and down, a limiting rod (32) is fixedly connected between the two clamping plates (34), a slider (33) is sleeved on the outer side of the limiting rod (32) near the top end, a linkage plate (35) is fixedly connected to the left side of each of the two sliders (33), and a rust removal knife (6) is fixedly connected between the two linkage plates (35); A plurality of second rotating wheels (47) are hinged to the front side of the inner cavity of the mounting box (7), the plurality of second rotating wheels (47) are arranged in a rectangular array, a first rotating wheel (46) is hinged between every two adjacent second rotating wheels (47), a belt (44) is wound around the outer sides of the plurality of second rotating wheels (47) and the first rotating wheels (46), a moving plate (45) is fixedly connected to the outer side of the belt (44) near the front side, and the front side of the moving plate (45) is fixedly connected to the rust removal knife (6); There is a movable box (25) on the front side of the mounting box (7), there is a movable box (25) near the bottom on the left side of the mounting box (7), vertical rods (28) are fixedly connected to the four corners of the rear side of the movable box (25), a lifting plate (27) is sleeved on the outer sides of the plurality of vertical rods (28), the lifting plate (27) is located in the inner cavity of the mounting box (7), a connecting plate (29) is fixedly connected to the rear ends of every two adjacent vertical rods (28), an opening is formed in the inner cavity of the lifting plate (27), a short plate (54) is fixedly connected to the right side of the lifting plate (27), the short plate (54) is fixedly connected to the outer side of the belt (44) near the rear side, a middle plate (37) is fixedly connected to the center of the rear side of the inner cavity of the mounting box (7), a guiding port is formed in the inner cavity of the middle plate (37), the central part of the guiding port is trapezoidal, a movable plate (39) is fixedly connected to the rear side of the movable box (25), the rear end of the movable plate (39) penetrates through the guiding port and is hinged to a sliding wheel (43), and the outer side of the sliding wheel (43) is attached to the inner cavity of the guiding port; At the center of the top of the movable box (25), an insertion tube (51) is inserted. Inside the movable box (25) near the top, a partition plate (42) is fixedly connected. Inside the partition plate (42), a number of discharge ports are provided, and the number of discharge ports are linearly arranged in sequence from left to right. Inside cavities of the number of discharge ports, opening and closing plates (57) are attached. On the left and right sides of the opening and closing plate (57), wing plates (58) are fixedly connected. At the bottom of the two wing plates (58), connecting springs (59) are fixedly connected. The bottom ends of the connecting springs (59) are fixedly connected to the partition plate (42). In front of the number of opening and closing plates (57), intermediate plates (15) are fixedly connected. In front of the number of intermediate plates (15), reciprocating plates (48) are fixedly connected. At the center of the top of the reciprocating plate (48), a lifting pull rod (52) is fixedly connected. The top end of the lifting pull rod (52) penetrates through the inner cavity of the insertion tube (51). Inside the movable box (25) near the top at the rear side, a limiting groove is provided. At the rear side of the lifting pull rod (52), a clamping rod (53) is fixedly connected. The rear end of the clamping rod (53) is slidably connected to the inner cavity of the limiting groove.

2. The precision pneumatic chuck according to claim 1, wherein: At the front side near the bottom of the installation box (7), there is a synchronous motor (31). On the right side of the synchronous motor (31), an L-shaped connecting rod (30) is fixedly connected. The other end of the L-shaped connecting rod (30) is fixedly connected to the installation box (7). The power output shaft of the synchronous motor (31) penetrates through the inner cavity of the installation box (7) and fixedly penetrates through the inner cavity of the center of the first rotating wheel (46) located below.

3. The precision pneumatic chuck according to claim 2, characterized in that: At the bottom of the partition plate (42), a number of dye tubes (40) are fixedly connected, and the number of dye tubes (40) are linearly arranged in sequence from left to right. The discharge ports and the inner cavities of the dye tubes (40) are in a mutually communicating arrangement. At the bottom ends of the number of dye tubes (40), brushes (26) are fixedly connected. On the front and rear sides of the number of brushes (26), mounting plates (41) are jointly fixedly connected, and on the left and right sides of the two mounting plates (41), they are fixedly connected to the inner side walls of the movable box (25).

4. The precision pneumatic chuck according to claim 3, characterized in that: At the front side of the insertion tube (51), a welding plate (55) is fixedly connected. At the top of the welding plate (55), a return spring (56) is fixedly connected. The top end of the lifting pull rod (52) is hinged to a swing plate (49). The top end of the return spring (56) is fixedly connected to the bottom of the swing plate (49). At the center of the top of the movable box (25), a hinge plate (50) is fixedly connected. The hinge plate (50) is hinged to the swing plate (49). At the front side near the top of the middle plate (37), a fitting plate (38) is fixedly connected.

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