Automatic assembly equipment for pneumatic actuator end cover

Abstract

This invention belongs to the field of pneumatic actuator assembly technology, specifically an automatic assembly device for pneumatic actuator end caps, including a worktable; a support plate is rotatably connected to the top surface of the worktable, and the support plate is driven by a servo motor; a rotating column is rotatably connected to the surface of the support plate, and the rotating column is driven by a servo motor; a clamping assembly is installed on the end face of the rotating column; the clamping assembly includes a mounting plate, and the mounting plate is fixedly connected to the end face of the rotating column; a pair of electric push rods are fixedly connected to the side of the mounting plate near the rotating column, which drive the end cap and spring to rise vertically through the clamping rods, so that the end cap will not move in the horizontal direction, and thus the spring will not wobble or tilt during the process of the end cap being fastened to the end face of the pneumatic actuator, so that the spring at the top of the end cap can be accurately inserted into the interior of the pneumatic actuator and kept in a vertical state, thereby ensuring the assembly accuracy of the pneumatic actuator and thus ensuring the final product quality.

Description

Technical Field

[0001] This invention belongs to the field of pneumatic actuator assembly technology, specifically an automatic assembly device for pneumatic actuator end caps. Background Technology

[0002] A pneumatic actuator is a device that uses compressed air as a power source to convert gas pressure into mechanical motion. Its structure mainly includes components such as a cylinder, end cap, piston, piston rod, seals, and control valve. The cylinder serves as the main body to house the piston, which is connected to an external load via the piston rod. The seals ensure airtightness, and the control valve regulates the airflow. The working principle is based on the fact that compressed air entering the cylinder pushes the piston to move, thereby outputting linear or rotary motion. Precise position or speed control is achieved by adjusting the airflow direction and pressure through the control valve. Pneumatic actuators are widely used in industrial automation.

[0003] In the prior art, for the assembly of the pneumatic actuators mentioned above, especially for the assembly of end caps, workers often need to first fasten the two end caps onto the surface of the cylinder body, align the threaded holes on the surface of the end caps with the threaded holes on the end face of the cylinder body, then use a fixing clamp to firmly fix the end caps onto the surface of the cylinder body, and then use an automatic screw fastening machine to screw the screws into the threaded holes on the surface of the end caps and the cylinder body to complete the assembly between the end caps and the cylinder body.

[0004] There are many types of pneumatic actuators in the existing technology. In addition to the traditional pneumatic actuators mentioned above, there are also pneumatic actuators called "single-acting cylinders" or "spring-return cylinders". The difference between them and traditional pneumatic actuators is that a return spring is installed between the end cover and the piston inside the cylinder body. Therefore, during the assembly process, when the end cover is snapped onto the cylinder body, the spring is not fixed to the surface of the end cover. As the end cover moves with it, the spring is prone to tilting, which means that the end of the spring does not press correctly against the end face of the piston, thus affecting the final quality of the product.

[0005] Therefore, the present invention provides an automatic assembly device for pneumatic actuator end caps. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: An automatic assembly device for pneumatic actuator end caps, comprising a workbench; a support plate is rotatably connected to the top surface of the workbench, and the support plate is driven by a servo motor; a rotating column is rotatably connected to the surface of the support plate, and the rotating column is driven by a servo motor; a clamping assembly is installed on the end face of the rotating column; the clamping assembly includes a mounting plate, and the mounting plate is fixedly connected to the end face of the rotating column; a pair of electric push rods are fixedly connected to the side of the mounting plate near the rotating column, and the telescopic ends of the two electric push rods face opposite directions; a pair of pressure rods are fixedly connected to the telescopic ends of both electric push rods; an electric telescopic frame is fixedly connected to the top surface of the workbench at the support plate; two pairs of automatic screwdrivers are installed on the telescopic ends of the electric telescopic frame; clamping plates are slidably connected to both sides of the mounting plate; a double-threaded rod is threadedly connected between the two clamping plates, and the double-pressure screwdriver is driven by a servo motor.

[0008] Preferably, a movable seat is slidably connected to the top surface of the workbench away from the movable column, and the movable seat is driven by a servo motor; a vacuum suction cup is fixedly connected to the top surface of the movable seat; support rods are installed on both sides of the movable seat; a limit plate is installed on the end of the two support rods away from the movable seat; a plurality of evenly arranged limit holes are opened on the surface of the limit plate, and the limit holes are adapted to the reset spring inside the end cover.

[0009] Preferably, a sleeve is fixedly connected to the bottom of each of the two support rods; an adjusting rod is threadedly connected between the two sleeves, and the threads at both ends of the adjusting rod are in opposite directions; a groove is formed on the surface of the movable seat at the corresponding position of the adjusting rod, and the adjusting rod is located inside the groove; a through hole is formed on the surface of the limiting plate at the corresponding position of the support rod; a fixing rod is threadedly connected to the top of the support rod, and the diameter of the top of the fixing rod is larger than that of the through hole.

[0010] Preferably, cylinders are fixedly connected to both sides of the movable seat; a receiving plate is fixedly connected to the telescopic end of each cylinder, and the receiving plate is adapted to the adjusting rod; a pair of gears are fixedly connected to the surface of the adjusting rod, and the movable seat is located inside the two gears; toothed plates are fixedly connected to both sides of the movable seat and near the top, and the toothed plates can mesh with the gears.

[0011] Preferably, one end face of the sleeve is rectangular; a slider is slidably connected to the top surface of the workbench at a corresponding position on the sleeve; a pair of baffles are slidably connected to the top surface of the sliders, and the distance between the two baffles is adapted to the width of the sleeve.

[0012] Preferably, a pair of sliding plates are installed at the end of the clamp away from the support plate, and the sliding plates are fixed to the clamp by bolts; the ends of the two sliding plates that are close to each other are provided with slots, and the two slots are adapted to the output shaft of the pneumatic actuator.

[0013] Preferably, each of the two clamping plates is fixedly connected to a screw at one end away from the other; the screw is threaded with a sleeve; and the sleeve and the sliding plate are rotatably connected by a stop rod.

[0014] Preferably, the rotating column penetrates the support plate; clamping assemblies are installed at both ends of the rotating column; a moving column is slidably connected to the top surface of the worktable away from the moving seat, and the moving seat is driven by a servo motor; a top rod is slidably connected to the top surface of the moving column; a tray is installed on the top surface of the top rod; a pair of crossbars are fixedly connected to the surface of the top rod near the bottom; the crossbars extend to the outside of the moving column and are slidably connected to the moving column; a pair of guide plates are fixedly connected to both sides of the support plate, and the cross section of the guide plates is arranged in a right-angled trapezoidal shape.

[0015] Preferably, the top surface of the tray has a top outlet groove; a top column is slidably connected in the top outlet groove; an air guide pipe is fixedly connected to one side of the tray; one end of the air guide pipe communicates with the inside of the top outlet groove, and the other end is connected to an external air pump assembly.

[0016] Preferably, the top column is a hollow structure; multiple evenly arranged abutments are slidably connected to the surface of the top column; a connecting rod is fixedly connected to the bottom of the ejection groove; the connecting rod is slidably connected to the top column; an air guide groove is formed on the surface of the connecting rod; the air guide groove is L-shaped, with one opening on the side surface of the connecting rod and the other opening on the top surface of the connecting rod; a sleeve is fixedly connected inside the connecting column, and the connecting rod is located inside the sleeve; the abutments and the sleeve are elastically connected.

[0017] The beneficial effects of this invention are as follows: 1. The pneumatic actuator end cap automatic assembly equipment of the present invention uses a clamping rod to drive the end cap and spring to rise vertically, so the end cap will not move in the water direction. As a result, the spring will not wobble or tilt during the process of the end cap being fastened to the end face of the pneumatic actuator. This allows the spring at the top of the end cap to be accurately inserted into the interior of the pneumatic actuator and remain in a vertical state, thereby ensuring the assembly accuracy of the pneumatic actuator and thus ensuring the final product quality.

[0018] 2. The pneumatic actuator end cap automatic assembly equipment of the present invention restricts the movement of the spring by fastening the limiting hole on the surface of the limiting plate to the top of the spring. Then, when the moving seat moves towards the clamping rod with the end cap and the spring by the vacuum suction cup, the spring will no longer shake violently due to inertia when the moving seat starts to move and when it reaches the top, thus preventing the spring from tilting. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the support plate in this invention; Figure 3 This is a schematic diagram of the mounting plate structure in this invention; Figure 4 This is a schematic diagram of the skateboard structure in this invention; Figure 5 This is a schematic diagram of the limiting disk in this invention; Figure 6 This is a schematic diagram of the slider structure in this invention; Figure 7 This is a schematic diagram of the tray structure in this invention; Figure 8 This is a partial cross-sectional view of the tray in this invention; Figure 9 This is a schematic diagram of the connecting rod in this invention; In the diagram: 1. Workbench; 2. Support plate; 3. Rotating column; 4. Mounting plate; 5. Electric actuator; 6. Pressure rod; 7. Electric telescopic frame; 8. Automatic screw machine; 9. Clamping plate; 10. Double-threaded rod; 11. Moving seat; 12. Vacuum suction cup; 13. Support rod; 14. Limiting plate; 15. Limiting hole; 16. Sleeve one; 17. Adjusting rod; 18. Slide groove; 19. Through hole; 20. Fixing rod; 21. Cylinder; 22. 1. Receiving plate; 23. Gear; 24. Tooth plate; 25. Slider; 26. Baffle; 27. Slide plate; 28. Slot; 29. ​​Screw; 30. Sleeve; 31. Push rod; 32. Moving column; 33. Top rod; 34. Tray; 35. Crossbar; 36. Guide plate; 37. Ejection groove; 38. Top column; 39. Air guide pipe; 40. Push column; 41. Connecting rod; 42. Air guide groove; 43. Sleeve II; 44. Elastic band. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 3As shown in the embodiment of the present invention, an automatic assembly device for pneumatic actuator end caps includes a workbench 1; a support plate 2 is rotatably connected to the top surface of the workbench 1, and the support plate 2 is driven by a servo motor; a rotating column 3 is rotatably connected to the surface of the support plate 2, and the rotating column 3 is driven by a servo motor; a clamping assembly is installed on the end face of the rotating column 3; the clamping assembly includes a mounting plate 4, and the mounting plate 4 is fixedly connected to the end face of the rotating column 3; a pair of electric push rods 5 are fixedly connected to the side of the mounting plate 4 near the rotating column 3, and the telescopic ends of the two electric push rods 5 face opposite directions; the telescopic ends of the two electric push rods 5 are each fixedly connected to a... A pair of pressure rods 6; an electric telescopic frame 7 is fixedly connected to the top surface of the workbench 1 at the support plate 2; two pairs of automatic screwdrivers 8 are installed at the telescopic end of the electric telescopic frame 7; clamping plates 9 are slidably connected to both sides of the mounting plate 4; a double-threaded rod 10 is threaded between the two clamping plates 9, and the double pressure screw 29 is driven by a servo motor; during operation, when it is necessary to assemble a pneumatic actuator with a spring, this embodiment of the invention can be used. First, the user needs to place the cylinder of the pneumatic actuator to be assembled on the mounting plate 4, and then the clamping plates 9 on both sides of the mounting plate 4 clamp the pneumatic actuator under the drive of the double pressure screw 29. The user places the end cap on the paired clamping rods at the top and the spring in the mounting groove inside the end cap. The electric actuator 5 then raises the paired pressure rods 6 at the bottom, inserting the end cap and spring into the pneumatic actuator cylinder and securing the end cap to the actuator's end face. The mounting plate 4 then rotates 180 degrees under the influence of the rotating column 3, moving the clamped end cap to the top. The electric telescopic frame 7 then lowers the automatic screwdriver 8, which screws the screws into the screw holes on the end cap and the pneumatic actuator surface, thus securing the end cap to the actuator. Meanwhile, during this period, the user can also place another end cap and spring on top of the pair of clamping rods at the top, thereby completing the combination of the other end of the pneumatic actuator and the end cap, thus optimizing the assembly process and improving assembly efficiency. Since the end cap and spring are driven to rise vertically by the clamping rods, the end cap will not move in the water direction. As a result, the spring will not wobble or tilt during the process of the end cap being fastened to the end face of the pneumatic actuator. This allows the spring on the top of the end cap to be accurately inserted into the interior of the pneumatic actuator and remain in a vertical state, thereby ensuring the assembly accuracy of the pneumatic actuator and thus ensuring the final product quality.

[0023] like Figures 1 to 3As shown, a movable base 11 is slidably connected to the top surface of the workbench 1 away from the movable column 32, and the movable base 11 is driven by a servo motor; a vacuum suction cup 12 is fixedly connected to the top surface of the movable base 11; support rods 13 are installed on both sides of the movable base 11; a limiting plate 14 is installed at the end of the two support rods 13 away from the movable base 11; a plurality of evenly arranged limiting holes 15 are opened on the surface of the limiting plate 14, and the limiting holes 15 are adapted to the return spring inside the end cover; during operation, when the user needs to move the end cover and spring to the paired clamps located at the bottom When the spring is at the top of the rod, the user can first attach the end cap and the spring to the vacuum suction cup 12 on the top surface of the moving base 11. Then, the user can use the support rod 13 to fasten the limiting plate 14 to the spring. At this time, the limiting hole 15 on the surface of the limiting plate 14 will be fastened to the top of the spring, restricting the movement of the spring. Afterwards, as the moving base 11 moves towards the clamping rod with the end cap and the spring through the vacuum suction cup 12, due to the restriction of the limiting plate 14, the spring will no longer shake violently due to inertia when the moving base 11 starts to move and when it reaches the top, thus preventing the spring from tilting.

[0024] like Figures 1 to 6 As shown, the bottoms of both support rods 13 are fixedly connected to sleeves 16; an adjusting rod 17 is threadedly connected between the two sleeves 16, and the threads at both ends of the adjusting rod 17 are in opposite directions; a groove 18 is formed on the surface of the movable seat 11 at the corresponding position of the adjusting rod 17, and the adjusting rod 17 is located inside the groove 18; a through hole 19 is formed on the surface of the limiting plate 14 at the corresponding position of the support rod 13; a fixing rod 20 is threadedly connected to the top of the support rod 13, and the diameter of the top of the fixing rod 20 is larger than that of the through hole 19; during operation... When assembling pneumatic actuators and their end caps of different sizes and standards, the user can unscrew the fixing rod 20 to disengage it from the through hole 19, thereby allowing the limiting plate 14 to be removed from the top of the support rod 13. At this point, the user can replace the limiting plate 14. Then, the user can also adjust the distance between the two sleeves 16 and the support rod 13 by rotating the adjusting rod 17, thereby adapting to limiting plates 14 of different diameters, and thus adapting to end caps of different sizes and different numbers of springs, thereby improving the applicability of the embodiments of the present invention.

[0025] like Figure 1 and Figure 5As shown, cylinders 21 are fixedly connected to both sides of the movable seat 11; a receiving plate 22 is fixedly connected to the telescopic end of each cylinder 21, and the receiving plate 22 is adapted to the adjusting rod 17; a pair of gears 23 are fixedly connected to the surface of the adjusting rod 17, and the movable seat 11 is located inside the two gears 23; toothed plates 24 are fixedly connected to both sides of the movable seat 11 and near the top, and the toothed plates 24 can mesh with the gears 23; during operation, when the movable seat 11 moves the end cover to the pair of clamping rods, The cylinder 21 will lift the adjusting rod 17. During the upward movement of the adjusting rod 17, the adjusting rod 17 will drive the gear 23 on its surface to mesh with the toothed plate 24 on the surface of the moving seat 11. This will cause the adjusting rod 17 to drive the two support rods 13 and the limiting plate 14 to rotate away from the mounting plate 4. This will cause the limiting plate 14 to disengage from the spring, thus preventing the user from manually removing the limiting plate 14 and preventing the spring from tilting due to accidental collision during manual operation.

[0026] like Figure 1 , Figure 5 and Figure 6 As shown, the end face of the sleeve 16 is rectangular; the top surface of the worktable 1 is slidably connected to the corresponding position of the sleeve 16; the top surface of the slider 25 is slidably connected to a pair of baffles 26, and the distance between the two baffles 26 is adapted to the width of the sleeve 16; during operation, when the moving seat 11 drives the adjusting rod 17 to move, the sleeve 16 on the surface of the adjusting rod 17 will be inserted between the pair of baffles 26, and the pair of baffles 26 will restrict the sleeve 16, so that the adjusting rod 17 will not rotate during horizontal movement, and thus the support rod 13 and the limiting plate 14 will not deflect, thereby further ensuring that the spring at the top of the end cover will not tilt during the movement of the end cover following the moving seat 11.

[0027] like Figure 1 , Figures 3 to 4 As shown, a pair of sliding plates 27 are installed at the end of the clamping plate 9 away from the support plate 2, and the sliding plates 27 are fixed to the clamping plate 9 by bolts; the ends of the two sliding plates 27 that are close to each other are provided with slots 28, and the two slots 28 are adapted to the output shaft of the pneumatic actuator; during operation, when the two clamping plates 9 are close to each other and clamp the cylinder of the pneumatic actuator, the sliding plates 27 at the ends of the two clamping plates 9 will also be engaged together. At this time, the slots 28 at the ends of the sliding plates 27 will also be engaged on the output shaft of the pneumatic actuator. Thus, the sliding plates 27 can restrict the sliding of the pneumatic actuator cylinder on the mounting plate 4 through the cooperation of the slots 28 and the output shaft of the pneumatic actuator. This ensures that when the pressure rod 6 presses the end cover against the cylinder of the pneumatic actuator, the pneumatic actuator cylinder will not slide due to compression, so that the end cover and the pneumatic actuator cylinder can be pressed together normally.

[0028] like Figures 3 to 4 As shown, each of the two clamping plates 9 has a screw 29 fixedly connected to one end of each other; each screw 29 has a sleeve 30 threadedly connected to its surface; the sleeve 30 and the slide plate 27 are rotatably connected by a stop rod 31; during operation, when the slide plate 27 is engaged with the cylinder surface of the pneumatic actuator, the output shaft of the pneumatic actuator will rest on the surface of the slot 28, causing the slide plate 27 to deflect and deform. At this time, the triangular stable structure formed by the stop rod 31, sleeve 30, screw 29 and slide plate 27 can minimize the amount of deformation of the slide plate 27, making the pneumatic actuator more securely mounted in the slot 28. At the same time, by adjusting the position of the stop rod 31 on the screw 29 by the nut, the user can also easily adjust the position of the slide plate 27 on the end face of the clamping plate 9, thereby adapting to pneumatic actuator cylinders of different sizes, and thus improving the applicability of the embodiment of the present invention.

[0029] like Figure 1 and Figure 7 As shown, the rotating column 3 penetrates the support plate 2; clamping assemblies are installed at both ends of the rotating column 3; a moving column 32 is slidably connected to the top surface of the worktable 1 away from the moving seat 11, and the moving seat 11 is driven by a servo motor; a top rod 33 is slidably connected to the top surface of the moving column 32; a tray 34 is installed on the top surface of the top rod 33; a pair of crossbars 35 are fixedly connected to the surface of the top rod 33 near the bottom; the crossbars 35 extend to the outside of the moving column 32, and are slidably connected to the moving column 32; a pair of guide plates 36 are fixedly connected to both sides of the support plate 2, and the cross section of the guide plates 36 is arranged in a right-angled trapezoidal shape; during operation, when the pneumatic actuator cylinder at one end of the support plate 2 is assembling the end cover, The user can place the unassembled pneumatic actuator cylinder on the tray 34 on top of the moving column 32. Then, the moving column 32 will move the tray 34 and the pneumatic actuator cylinder on it to the mounting plate 4 on the surface of the support plate 2. During this process, the crossbars 35 at both ends of the push rod 33 will be squeezed by the guide plate 36, which will cause the push rod 33 to rise, thereby lifting the tray 34. At this time, the pneumatic actuator cylinder will be normally located between the clamping plates 9 on both sides of the mounting plate 4, thus completing the clamping of the pneumatic actuator cylinder. In this way, while the cylinder on the other side is still being assembled with the end cap, the other side can also complete the pre-clamping of the pneumatic actuator cylinder to be assembled with the end cap, thereby optimizing the assembly process and improving the assembly efficiency.

[0030] like Figures 7 to 8As shown, the top surface of the tray 34 is provided with an ejection groove 37; a top column 38 is slidably connected in the ejection groove 37; an air guide pipe 39 is fixedly connected to one side of the tray 34; one end of the air guide pipe 39 communicates with the inside of the ejection groove 37, and the other end is connected to an external air pumping assembly; during operation, when the pneumatic actuator is placed on the top surface of the tray 34, the external air pumping assembly pumps gas into the ejection groove 37 through the air guide pipe 39, thereby causing the top column 38 in the ejection groove 37 to be lifted up and inserted into the cylinder of the pneumatic actuator, thereby fixing the cylinder of the pneumatic actuator and preventing the cylinder of the pneumatic actuator from sliding randomly on the top surface of the tray 34 due to inertia, which would affect the clamping of the cylinder of the pneumatic actuator by the clamping plate 9.

[0031] like Figures 7 to 9 As shown, the top column 38 is a hollow structure; multiple evenly arranged abutment columns 40 are slidably connected to the surface of the top column 38; a connecting rod 41 is fixedly connected to the bottom of the ejection groove 37; the connecting rod 41 is slidably connected to the top column 38; an air guide groove 42 is formed on the surface of the connecting rod 41; the air guide groove 42 is L-shaped, with one opening on the side surface of the connecting rod 41 and the other opening on the top surface of the connecting rod 41; a sleeve 43 is fixedly connected inside the connecting column, and the connecting rod 41 is located inside the sleeve 43; an elastic band 44 is fixedly connected between the abutment column 40 and the sleeve 43. During operation, when the top column 38 is lifted, the opening of the air guide groove 42 on the side surface of the connecting rod 41 will be located in the ejection groove 37. At this time, the gas in the ejection groove 37 will enter the air guide groove 42 through this groove, and then enter the top column 38 from the air guide groove 42. This will push the abutment 40 out of the top column 38 and stretch the elastic band 44. Finally, the abutment 40 will abut against the inner wall of the pneumatic actuator cylinder, thereby further improving the stability of the pneumatic actuator cylinder. When the air guide pipe 39 is evacuated, the elastic band 44 will recover, causing the abutment 40 to quickly retract into the top column 38, preventing the top column 38 from being obstructed by the abutment 31 when it falls back into the ejection groove 37.

[0032] When assembling a pneumatic actuator with a spring, this embodiment of the invention can be used. First, the user places the cylinder of the pneumatic actuator to be assembled on the mounting plate 4. Then, the clamping plates 9 on both sides of the mounting plate 4, driven by the double pressure screws 29, clamp the cylinder of the pneumatic actuator. Next, the user places the end cap on the pair of clamping rods at the top and places the spring in the mounting groove inside the end cap. Then, the electric push rod 5 drives the pair of pressure rods 6 at the bottom to rise, thereby inserting the end cap and spring into the pneumatic actuator cylinder and fastening the end cap to the end face of the pneumatic actuator. Then, the mounting plate 4 rotates 180 degrees under the drive of the rotating column 3, rotating the clamped end cap to the top. Then, the electric telescopic frame 7 drives the automatic screw machine 8 to descend. The automatic screwdriver 8 then screws the screws into the screw holes on the end cap and the surface of the pneumatic actuator, thus completing the fixation between the end cap and the pneumatic actuator. During this process, the user can also place another end cap and spring on top of the pair of clamping rods at the top, thus completing the combination of the other end of the pneumatic actuator and the end cap, thereby optimizing the assembly process and improving assembly efficiency. Since the end cap and spring are driven vertically upward by the clamping rods, the end cap will not move in the horizontal direction. As a result, the spring will not wobble or tilt during the process of the end cap being fastened to the end face of the pneumatic actuator. This allows the spring on the top of the end cap to be accurately inserted into the interior of the pneumatic actuator and remain in a vertical position, thereby ensuring the assembly accuracy of the pneumatic actuator and ensuring the final product quality.

[0033] When the user needs to move the end cap and spring to the top of the pair of clamping rods at the bottom, the user can first attach the end cap and spring to the vacuum suction cup 12 on the top surface of the moving base 11. Then, the user can use the support rod 13 to fasten the limiting plate 14 to the spring. At this time, the limiting hole 15 on the surface of the limiting plate 14 will be fastened to the top of the spring, restricting the movement of the spring. Afterwards, as the moving base 11 moves towards the clamping rods with the end cap and spring through the vacuum suction cup 12, due to the restriction of the limiting plate 14, the spring will no longer shake violently due to inertia when the moving base 11 starts to move and when it reaches the top, thus preventing the spring from tilting.

[0034] When assembling pneumatic actuators and their end caps of different sizes and standards, the user can unscrew the fixing rod 20 to disengage it from the through hole 19, thereby allowing the limiting plate 14 to be removed from the top of the support rod 13. At this point, the user can replace the limiting plate 14. Then, the user can also adjust the distance between the two sleeves 16 and the support rod 13 by rotating the adjusting rod 17, thereby adapting to limiting plates 14 of different diameters, and thus adapting to end caps of different sizes and different numbers of springs, thereby improving the applicability of the embodiments of the present invention.

[0035] When the movable seat 11 moves the end cap to the paired clamping rods, the cylinder 21 will lift the adjusting rod 17. During the upward movement of the adjusting rod 17, the gear 23 on its surface will mesh with the toothed plate 24 on the surface of the movable seat 11. This causes the adjusting rod 17 to rotate the two support rods 13 and the limiting plate 14 away from the mounting plate 4, thereby causing the limiting plate 14 to disengage from the spring. This avoids the user having to manually remove the limiting plate 14 and prevents the spring from tilting due to accidental collisions during manual operation.

[0036] When the movable seat 11 moves the adjusting rod 17, the sleeve 16 on the surface of the adjusting rod 17 will be inserted between the pair of baffles 26, and the pair of baffles 26 will restrict the sleeve 16, so that the adjusting rod 17 will not rotate during horizontal movement, and the support rod 13 and the limiting plate 14 will not deflect, thus further ensuring that the spring on the top of the end cover will not tilt when the end cover moves with the movable seat 11.

[0037] When the two clamping plates 9 approach each other and clamp the cylinder of the pneumatic actuator, the sliding plates 27 at the ends of the two clamping plates 9 will also engage together. At this time, the slot 28 at the end of the sliding plate 27 will also be engaged on the output shaft of the pneumatic actuator. Thus, the sliding plate 27 can restrict the sliding of the pneumatic actuator cylinder on the mounting plate 4 through the cooperation of the slot 28 and the output shaft of the pneumatic actuator. This ensures that when the pressure rod 6 presses the end cover against the cylinder of the pneumatic actuator, the cylinder of the pneumatic actuator will not slide due to compression, so that the end cover and the cylinder of the pneumatic actuator can be pressed together normally.

[0038] When the slide plate 27 is fastened onto the cylinder surface of the pneumatic actuator, the output shaft of the pneumatic actuator will rest on the surface of the slot 28, causing the slide plate 27 to tend to deflect and deform. At this time, the triangular stabilizing structure formed by the abutment rod 31, sleeve 30, screw 29 and slide plate 27 can minimize the amount of deformation of the slide plate 27, making the pneumatic actuator more securely resting on the slot 28. At the same time, by adjusting the position of the abutment rod 31 on the screw 29 by the nut, the user can also easily adjust the position of the slide plate 27 on the end face of the clamping plate 9, thereby adapting to pneumatic actuator cylinders of different sizes and improving the applicability of the embodiment of the present invention.

[0039] When the pneumatic actuator cylinder at one end of the support plate 2 is being assembled with an end cap, the user can place the unassembled pneumatic actuator cylinder on the tray 34 on top of the moving column 32. Then, the moving column 32 will move the tray 34 and the pneumatic actuator cylinder on it to the mounting plate 4 on the surface of the support plate 2. During this process, the crossbars 35 at both ends of the push rod 33 will be squeezed by the guide plate 36, which will cause the push rod 33 to rise, thereby lifting the tray 34. At this time, the pneumatic actuator cylinder will be normally located between the clamping plates 9 on both sides of the mounting plate 4, thus completing the clamping of the pneumatic actuator cylinder. Thus, while the cylinder on the other side is still being assembled with an end cap, the other side can also complete the pre-clamping of the pneumatic actuator cylinder to be assembled with an end cap, thereby optimizing the assembly process and improving assembly efficiency.

[0040] When the pneumatic actuator is placed on the top surface of the tray 34, the external air pumping assembly pumps gas into the ejector slot 37 through the air guide pipe 39, thereby lifting the ejector pin 38 in the ejector slot 37 and inserting it into the cylinder of the pneumatic actuator, thus fixing the cylinder of the pneumatic actuator in place and preventing the cylinder of the pneumatic actuator from sliding freely on the top surface of the tray 34 due to inertia, which would affect the clamping of the pneumatic actuator cylinder by the clamping plate 9.

[0041] When the top column 38 is lifted, the opening of the air guide groove 42 on the side surface of the connecting rod 41 will be located in the ejection groove 37. At this time, the gas in the ejection groove 37 will enter the air guide groove 42 through the air guide groove 42, and then enter the interior of the top column 38 through the air guide groove 42, thereby pushing the abutment 40 to push out the top column 38 and stretching the elastic band 44. Finally, the abutment 40 will abut against the inner wall of the pneumatic actuator cylinder, thereby further improving the stability of fixing the pneumatic actuator cylinder. When the air guide pipe 39 is evacuated, the elastic band 44 recovers, causing the abutment 40 to quickly retract into the interior of the top column 38, preventing the top column 38 from being obstructed by the abutment 31 when it falls back into the ejection groove 37.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic assembly device for pneumatic actuator end caps, characterized in that: The device includes a worktable; a support plate is rotatably connected to the top surface of the worktable, and the support plate is driven by a servo motor; a rotating column is rotatably connected to the surface of the support plate, and the rotating column is driven by a servo motor; a clamping assembly is installed on the end face of the rotating column; the clamping assembly includes a mounting plate, and the mounting plate is fixedly connected to the end face of the rotating column; a pair of electric push rods are fixedly connected to the side of the mounting plate near the rotating column; a pair of pressure rods are fixedly connected to the telescopic ends of the two electric push rods; an electric telescopic frame is fixedly connected to the top surface of the worktable at the support plate; two pairs of automatic screwdrivers are installed on the telescopic ends of the electric telescopic frame; clamping plates are slidably connected to both sides of the mounting plate; a double-threaded rod is threadedly connected between the two clamping plates, and the double-pressure screwdriver is driven by a servo motor.

2. The automatic assembly equipment for pneumatic actuator end caps according to claim 1, characterized in that: A movable seat is slidably connected to the top surface of the workbench away from the movable column, and the movable seat is driven by a servo motor; a vacuum suction cup is fixedly connected to the top surface of the movable seat; support rods are installed on both sides of the movable seat; a limit plate is installed on the end of the two support rods away from the movable seat; a plurality of evenly arranged limit holes are opened on the surface of the limit plate.

3. The automatic assembly equipment for pneumatic actuator end caps according to claim 2, characterized in that: Both support rods are fixedly connected to the bottom of a sleeve; an adjusting rod is threadedly connected between the two sleeves, and the threads at both ends of the adjusting rod are in opposite directions; a sliding groove is formed on the surface of the movable seat at the corresponding position of the adjusting rod, and the adjusting rod is located inside the sliding groove; a through hole is formed on the surface of the limiting plate at the corresponding position of the support rod; a fixing rod is threadedly connected to the top of the support rod, and the diameter of the top of the fixing rod is larger than that of the through hole.

4. The automatic assembly equipment for pneumatic actuator end caps according to claim 3, characterized in that: Both sides of the movable seat are fixedly connected to cylinders; the extension and retraction ends of the cylinders are fixedly connected to receiving plates, and the receiving plates are adapted to the adjusting rod; a pair of gears are fixedly connected to the surface of the adjusting rod, and the movable seat is located inside the two gears; toothed plates are fixedly connected to both sides of the movable seat and near the top, and the toothed plates can mesh with the gears.

5. The automatic assembly equipment for pneumatic actuator end caps according to claim 4, characterized in that: One end face of the sleeve is rectangular; a slider is slidably connected to the top surface of the workbench at a corresponding position on the sleeve; a pair of baffles are slidably connected to the top surface of the sliders, and the distance between the two baffles is adapted to the width of the sleeve.

6. The automatic assembly equipment for pneumatic actuator end caps according to claim 1, characterized in that: A pair of sliding plates are installed at the end of the clamp away from the support plate, and the sliding plates are fixed to the clamp by bolts; the ends of the two sliding plates that are close to each other are provided with slots, and both slots are adapted to the output shaft of the pneumatic actuator.

7. The automatic assembly equipment for pneumatic actuator end caps according to claim 6, characterized in that: Each of the two clamping plates has a screw fixedly connected to one end of each other; each screw has a sleeve threaded onto its surface; and a stop rod is rotatably connected to the sleeve and the sliding plate.

8. The automatic assembly equipment for pneumatic actuator end caps according to claim 1, characterized in that: The rotating column penetrates the support plate; clamping assemblies are installed at both ends of the rotating column; a moving column is slidably connected to the top surface of the worktable away from the moving seat, and the moving seat is driven by a servo motor; a top rod is slidably connected to the top surface of the moving column; a tray is installed on the top surface of the top rod; a pair of crossbars are fixedly connected to the surface of the top rod near the bottom; the crossbars extend to the outside of the moving column and are slidably connected to the moving column; a pair of guide plates are fixedly connected to both sides of the support plate, and the cross section of the guide plates is set in a right-angled trapezoid.

9. The automatic assembly equipment for pneumatic actuator end caps according to claim 8, characterized in that: The top surface of the tray has a top outlet groove; a top column is slidably connected in the top outlet groove; an air guide pipe is fixedly connected to one side of the tray; one end of the air guide pipe is connected to the inside of the top outlet groove, and the other end is connected to an external air pump assembly.

10. An automatic assembly device for pneumatic actuator end caps according to claim 9, characterized in that: The top column is a hollow structure; multiple evenly arranged abutments are slidably connected to the surface of the top column; a connecting rod is fixedly connected to the bottom of the ejection groove; the connecting rod is slidably connected to the top column; an air guide groove is formed on the surface of the connecting rod; the air guide groove is L-shaped, with one opening on the side surface of the connecting rod and the other opening on the top surface of the connecting rod; a sleeve is fixedly connected inside the connecting column; an elastic band is fixedly connected between the abutments and the sleeve.

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