Multi-station hydraulic cylinder body welding device and process

Abstract

The invention relates to the technical field of hydraulic cylinder welding, in particular to a multi-station hydraulic cylinder body welding device and process, which comprises a welding platform, a horizontal driving shaft is rotatably arranged on the welding platform, two ends of the driving shaft are fixedly connected with vertical turntables, and a plurality of groups of rotating seats are circumferentially distributed on opposite sides of the two groups of turntables; a self-locking clamping structure is arranged at the end, away from the rotating disc, of the rotating base, and a transmission structure which is in transmission connection with the self-locking clamping structure and used for driving the self-locking clamping structure to be opened is arranged on the outer side of the rotating base. The rotating disc is driven by the driving shaft to achieve ordered switching of the rotating seat among a feeding station, a welding station and a discharging station, so that all procedures are synchronously carried out in parallel, the comprehensive utilization rate of equipment is effectively improved, the batch welding production efficiency of hydraulic cylinder bodies and flange plates is greatly improved, and the problem that the efficiency is low due to the fact that procedures of a single-station device are connected in series is solved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder welding technology, specifically to a multi-station hydraulic cylinder body welding device and process. Background Technology

[0002] Hydraulic cylinders are widely used in various mechanical equipment. In order to facilitate the installation and fixing of hydraulic cylinders to the main equipment, flanges are usually welded to the end of the cylinder body. Currently, the welding of hydraulic cylinder bodies and flanges mainly adopts two methods: one is manual welding, which involves manually completing the connection and then manually welding. This method is significantly affected by the difference in welder skills, resulting in poor weld uniformity, high labor intensity, and low welding efficiency, making it difficult to meet the needs of mass production. The other is single-station automated welding equipment, which can improve welding quality to a certain extent, but is limited by structural design and can only realize the welding operation of individual cylinder bodies one by one. Such equipment has obvious process fragmentation problems, with cylinder body loading, welding, and unloading processes carried out in series, resulting in low overall equipment utilization and difficulty in meeting the needs of mass production. Therefore, a multi-station hydraulic cylinder body welding device and process are proposed, which can realize multi-station parallel operation, adapt to mass production, and improve welding efficiency and quality consistency. Summary of the Invention

[0003] To address the problems in the prior art, this invention provides a multi-station hydraulic cylinder body welding device and process, which can realize multi-station parallel operation, adapt to mass production, and improve welding efficiency and quality consistency.

[0004] The technical solution adopted by this invention to solve its technical problem is a multi-station hydraulic cylinder body welding device, including a welding platform. A horizontal drive shaft is rotatably mounted on the welding platform. Vertical turntables are fixedly connected to both ends of the drive shaft. Several sets of rotating seats are circumferentially distributed on the opposite side of the two sets of turntables. A self-locking clamping structure is installed at the end of the rotating seat away from the turntable. A transmission structure is provided on the outer side of the rotating seat, which is connected to the self-locking clamping structure and is used to drive the self-locking clamping structure to open. A horizontal moving rod is fixedly connected to the side of the rotating seat near the turntable. The moving rod slides through the turntable and extends outward. A drive gear is fixedly connected to the end of the moving rod away from the rotating seat. A damping rotating ring is rotatably connected to the side of the turntable away from the rotating seat. An arc rack that meshes with the drive gear is fixedly connected to the inner side of the damping rotating ring. A counterweight drive structure is provided on the outer side of the damping rotating ring.

[0005] Specifically, the self-locking clamping structure includes several sets of adjustment holes circumferentially distributed on the side of the rotating seat. Nuts are slidably connected in the adjustment holes. A moving groove communicating with the adjustment holes is provided on the side of the rotating seat away from the turntable. A clamping claw for clamping the cylinder or flange is slidably connected in the moving groove. One end of the nut is fixedly connected to one side of the clamping claw. A vertically arranged threaded rod is rotatably connected in the adjustment hole. The threaded rod passes through the nut and is threadedly connected to the nut. The end of the threaded rod away from the center of the rotating seat extends out of the adjustment hole and is connected to the first gear through a one-way bearing. A torsion spring sleeved on the threaded rod is connected between the threaded rod and the rotating seat.

[0006] Specifically, the counterweight drive structure includes an arc-shaped counterweight rack fixedly connected to the outside of the damping ring, and the outside of the arc-shaped counterweight rack is provided with a first tooth structure that meshes with the transmission structure.

[0007] Specifically, the transmission structure includes a movable gear ring rotatably connected to the outside of the rotating seat. One side of the movable gear ring is provided with a second gear structure that meshes with the first gear. The second gear meshes with the outside of the movable gear ring. A horizontally arranged rotating shaft is fixedly connected to one side of the second gear. One end of the rotating shaft passes through the turntable and is fixedly connected to a third gear. The rotating shaft is rotatably connected to the turntable. The third gear meshes with the first gear structure of the arc-shaped counterweight rack.

[0008] Specifically, a fixed plate is fixedly connected to the end of the moving rod away from the rotating seat. A compression spring and a rotating plate are connected in sequence to the side of the fixed plate near the turntable. The rotating plate is rotatably connected to the turntable. A connecting rod is fixed to the side of the drive gear away from the rotating seat. A ball is embedded at the end of the connecting rod away from the drive gear. Each of the two sets of turntables has a support plate vertically fixed on the welding platform on the side away from each other. The two ends of the drive shaft pass through the turntable in sequence and are rotatably connected to one side of the support plate. There is a guide rail between the turntable and the support plate, which is fixed on the support plate by a bracket. The guide rail has an arc-shaped structure that matches the direction of movement of the turntable. There is a ramp on the guide rail that makes contact with the ball bearings and drives the moving rod to move in the horizontal direction.

[0009] Specifically, a drive motor is fixedly connected to one side of the bracket, and the output end of the drive motor is coaxially connected to one end of the drive shaft.

[0010] Specifically, the welding platform has a base at its bottom, a discharge port on the welding platform that communicates with the base, a material collection frame inside the base, and a cabinet door on one side of the base.

[0011] A welding process for a multi-station hydraulic cylinder body, employing the aforementioned multi-station hydraulic cylinder body welding device, specifically includes the following steps: S1. The drive shaft drives the two sets of turntables to reset. The damped rotating ring is synchronously reset under the gravity of the counterweight drive structure. Only the self-locking clamping structure of the rotating seat at the bottom of the turntable is kept open by the transmission structure, while the self-locking clamping structure of the rotating seats at other work positions is locked and ready to go. S2. The drive shaft drives two sets of turntables to rotate synchronously, moving the open rotating seat to the loading station. The self-locking clamping structure at this station is kept open by the transmission of the counterweight drive structure and the transmission structure. After the hydraulic cylinder body and flange are placed respectively, the counterweight drive structure continues to drive the damping rotating ring to rotate and disengage from the transmission. The self-locking clamping structure automatically locks and completes the clamping. S3. The drive shaft continues to drive the turntable to rotate, and the clamped rotating seat moves to the welding station. The counterweight drive structure drives the damping rotating ring to reset. The arc rack meshes with the drive gear at the end of the moving rod, driving the rotating seat and the clamped cylinder and flange to rotate synchronously, completing the continuous circumferential welding at the joint. S4. After welding is completed, the turntable drives the rotating seat to the unloading station. The counterweight drive structure drives the damping rotating ring to reset. The transmission structure drives the self-locking clamping structure of the station to open, and the welded product is automatically unloaded. S5. The drive shaft drives two sets of turntables to rotate intermittently. Each rotating seat cycles through the loading station, welding station, standby station, and unloading station. Through the cooperation of the counterweight drive structure and the damping rotating ring, the self-locking clamping structure is automatically locked and opened, and multi-station cyclic welding is continuously performed.

[0012] The beneficial effects of this invention are: The present invention discloses a multi-station hydraulic cylinder body welding device and process, which realizes the orderly switching of the rotating seat between the loading, welding and unloading stations by driving the turntable with the drive shaft, so that each process can be carried out synchronously and in parallel, effectively improving the overall utilization rate of the equipment, greatly improving the batch welding production efficiency of hydraulic cylinder bodies and flanges, and solving the problem of low efficiency caused by the serial connection of processes in single-station devices. The present invention discloses a multi-station hydraulic cylinder body welding device and process. The gravity driving force of the counterweight drive structure, combined with the damping rotating ring, realizes the automatic opening and locking of the self-locking clamping structure. No additional power source is required to drive the clamping action, which simplifies the control logic of the equipment, reduces the energy consumption of the equipment, and significantly improves the automation level of the welding operation. The present invention discloses a multi-station hydraulic cylinder body welding device and process, wherein the damping rotating ring meshes with the drive gear through the inner arc rack, driving the rotating seat of the welding station and the clamped workpiece to rotate at a uniform speed, so that the external welding equipment can complete continuous circumferential welding, ensuring the consistency of weld formation, solving the problem of uneven weld caused by skill differences in manual welding, and improving the welding quality. The present invention discloses a multi-station hydraulic cylinder body welding device and process, which realizes the horizontal movement of the rotating seat through the combination of a moving rod and a ramp structure of a guide rail, and completes the automatic docking of the cylinder body and the flange, replacing manual alignment operation and improving the workpiece docking accuracy. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is an isometric view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the drive shaft connection structure of the present invention; Figure 4 for Figure 3 Enlarged view of region A; Figure 5 This is a schematic diagram of the guide rail structure of the present invention; Figure 6 This is an isometric view of the turntable of the present invention; Figure 7 for Figure 6 Enlarged view of region B; Figure 8 This is a schematic diagram of the initial state structure of the arc-shaped counterweight rack of the present invention; Figure 9 This is a schematic diagram of the arc-shaped counterweight rack of the present invention after it rotates with the turntable; Figure 10 This is a schematic diagram of the structure of the cylinder body and flange after welding of the present invention; In the diagram: 1. Welding platform; 2. Drive shaft; 3. Turntable; 4. Rotating seat; 5. Moving rod; 6. Drive gear; 7. Damped rotating ring; 8. Arc rack; 9. Adjustment hole; 10. Nut; 11. Moving groove; 12. Clamping claw; 13. Threaded rod; 14. One-way bearing; 15. First gear; 16. Torsion spring; 17. Arc counterweight rack; 18. First tooth structure; 19. Moving tooth ring; 20. Second tooth structure; 21. Second gear; 22. Rotating shaft; 23. Third gear; 24. Fixed plate; 25. Compression spring; 26. Rotating plate; 27. Connecting rod; 28. Ball bearing; 29. ​​Support plate; 30. Bracket; 31. Guide rail; 32. Ramp; 33. Drive motor; 34. Base; 35. Discharge port; 36. Cabinet door. Detailed Implementation

[0015] 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.

[0016] To enable multi-station parallel operation, adapt to batch production, and improve welding efficiency and quality consistency, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the multi-station hydraulic cylinder body welding device of the present invention includes a welding platform 1, on which a horizontal drive shaft 2 is rotatably mounted. Both ends of the drive shaft 2 are fixedly connected to vertical turntables 3. Several sets of rotating seats 4 are circumferentially distributed on opposite sides of the two sets of turntables 3. A self-locking clamping structure is installed at the end of the rotating seat 4 away from the turntable 3. A transmission structure is provided on the outer side of the rotating seat 4, which is connected to the self-locking clamping structure and is used to drive the self-locking clamping structure to open. A horizontal moving rod 5 is fixedly connected to the side of the rotating seat 4 near the turntable 3. The moving rod 5 slides through the turntable 3 and extends outward. A drive gear 6 is fixedly connected to the end of the moving rod 5 away from the rotating seat 4. A damping rotating ring 7 is rotatably connected to the side of the turntable 3 away from the rotating seat 4. An arc rack 8 that meshes with the drive gear 6 is fixedly connected to the inner side of the damping rotating ring 7. A counterweight drive structure is provided on the outer side of the damping rotating ring 7.

[0017] When in use, after the device is started, the drive shaft 2 drives the two sets of turntables 3 to rotate synchronously by 90°. The self-locking clamping structure, which was originally in the open state at the bottom, moves up to the loading station with the rotating seat 4. The counterweight drive structure drives the damping rotating ring 7 to reset. At this time, the counterweight drive structure and the transmission structure still maintain the transmission connection. The self-locking clamping structure is in the open state. The operator can place the hydraulic cylinder body and the flange on the self-locking clamping structure on both sides respectively. After placement, as the counterweight drive structure continues to drive the damping rotating ring 7 to rotate, the counterweight drive structure disengages from the transmission structure of this station, and the self-locking clamping structure completes the locking and clamping. Drive shaft 2 continues to drive turntable 3 to rotate 90°, and the clamped rotating seat 4 moves to the welding station. The external welding robot arm moves and aligns, and the counterweight drive structure drives the damping rotating ring 7 to reset. The arc rack 8 meshes with the drive gear 6 to drive the rotating seat 4, cylinder and flange to rotate synchronously. The welding robot arm performs continuous welding at the joint. This achieves seamless switching between the loading and welding stations, and multi-station parallel operation improves equipment utilization and batch production efficiency. The damping rotating ring 7 meshes with the gear to make the rotating seat 4 rotate at a uniform speed, ensuring the consistency of weld formation and solving the problems of uneven manual welding and low efficiency of single station. After welding is completed, drive shaft 2 drives turntable 3 to rotate again. The rotating seat 4, which has been welded, moves 180° and can then be moved to the unloading station. The counterweight drive structure drives the damping rotating ring 7 to reset. After the counterweight drive structure moves down, it drives the transmission structure to automatically open the self-locking clamping structure. The finished product is automatically unloaded after losing the clamping force. This step uses the cyclic rotation of turntable 3 to switch between welding and unloading stations. The clutch of the counterweight drive structure and the transmission structure enables the automatic opening of the clamping structure. No manual unloading is required, reducing the labor intensity of operators. Moreover, the unloading, loading, and welding processes are carried out simultaneously, further improving the overall work efficiency. Driven by the drive shaft 2, two sets of turntables 3 are continuously rotated intermittently at 90°. Each rotating seat 4 cycles between the loading position, welding position, standby position, and unloading position. The counterweight drive structure and the damping rotating ring 7 work together to realize the automatic locking and opening of the self-locking clamping structure of the rotating seat 4 at each station. The operator only needs to place the cylinder body and flange to be processed at the loading position to realize the continuous, multi-station cyclic welding operation of the device, which is suitable for the welding production needs of large batches of hydraulic cylinder bodies and flanges.

[0018] To ensure the workpiece is securely clamped during welding, for example, such as Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, the present invention also includes a self-locking clamping structure comprising several sets of adjustment holes 9 circumferentially distributed on the side of the rotating seat 4. Nuts 10 are slidably connected in the adjustment holes 9. A moving groove 11 communicating with the adjustment holes 9 is provided on the side of the rotating seat 4 away from the turntable 3. A clamping claw 12 for clamping the cylinder or flange is slidably connected in the moving groove 11. One end of the nut 10 is fixedly connected to one side of the clamping claw 12. A vertically arranged threaded rod 13 is rotatably connected in the adjustment holes 9. The threaded rod 13 passes through the nut 10 and is threadedly connected to the nut 10. One end of the threaded rod 13 away from the center of the rotating seat 4 extends out of the adjustment holes 9 and is connected to a first gear 15 through a one-way bearing 14. A torsion spring 16 sleeved on the threaded rod 13 is connected between the threaded rod 13 and the rotating seat 4.

[0019] When in use, after the counterweight drive structure meshes with the transmission structure, the power is transmitted to the first gear 15, which drives the threaded rod 13 to rotate through the one-way bearing 14, driving the nut 10 and the clamping claw 12 to slide outward, realizing automatic opening without manual adjustment, thus improving the degree of automation. When clamping at the loading station, the drive shaft 2 drives the turntable 3 to rotate 90°. After the open rotating seat 4 moves to the loading station, the counterweight drive structure drives the damping rotating ring 7 to reset. At this time, the counterweight drive structure and the transmission structure still maintain the transmission connection. The self-locking clamping structure is in the open state. After the operator places the cylinder and the flange, the counterweight drive structure and the damping rotating ring 7 disengage. The threaded rod 13 rotates in the opposite direction under the action of the torsion spring 16, driving the clamping claw 12 to slide inward and lock the workpiece, simplifying the control logic and reducing energy consumption. Drive shaft 2 drives turntable 3 to rotate 90° again. After locking, rotating seat 4 moves to the welding station. When damping ring 7 is reset, arc rack 8 meshes with drive gear 6, driving rotating seat 4, cylinder and flange to rotate synchronously, which is suitable for circumferential welding. During the rotation of rotating seat 4, first gear 15 meshes with transmission structure. One-way bearing 14 prevents power from being transmitted to threaded rod 13. Clamping claw 12 remains locked, ensuring that the workpiece is firmly clamped during welding and improving weld consistency. After welding is completed, the rotating seat 4 moves to the unloading station. During the reset process of the counterweight drive structure driving the damping rotating ring 7, the counterweight drive structure and the transmission structure mesh again, driving the clamping claw 12 to open, completing the unloading of the finished product, realizing continuous operation and improving production efficiency.

[0020] For example, such as Figure 3 , Figure 4 , Figure 8 , Figure 9 As shown, the present invention also includes a counterweight drive structure comprising an arc-shaped counterweight rack 17 fixedly connected to the outside of the damping ring 7, and the outside of the arc-shaped counterweight rack 17 is provided with a first tooth structure 18 that meshes with the transmission structure for transmission.

[0021] When in use, after the turntable 3 rotates, the arc-shaped counterweight rack 17 drives the damping rotating ring 7 to rotate by its own counterweight. The first tooth structure 18 meshes with the transmission structure, transmitting power to the self-locking clamping structure and driving the clamping claw 12 to open. When the drive shaft 2 drives the turntable 3 to rotate 90°, the opened rotating seat 4 moves to the loading station. The arc-shaped counterweight rack 17 is engaged with the transmission structure of the station. The continuous counterweight driving force keeps the clamping claw 12 open, providing space for the placement of the cylinder and flange. After the cylinder and flange are placed, the arc-shaped counterweight rack 17 continues to rotate and reset with the damping rotating ring 7. The first tooth structure 18 disengages from the transmission structure of the loading station, and the power transmission between the transmission structure and the self-locking clamping structure is interrupted. The threaded rod 13 rotates in the opposite direction under the reset force of the torsion spring 16, driving the clamping claw 12 to automatically lock the workpiece. After clamping, the rotating seat 4 is moved to the welding station. The arc-shaped counterweight rack 17 drives the damping rotating ring 7 to continue to reset. The arc-shaped rack 8 meshes with the drive gear 6, driving the workpiece to rotate synchronously, ensuring the consistency of weld formation and improving welding accuracy. After welding is completed, the rotating seat 4 moves to the unloading station, the arc-shaped counterweight rack 17 rotates again, the first tooth structure 18 re-meshes with the transmission structure, and drives the clamping claw 12 to open, completing the unloading. Through the cooperation of the counterweight and the rotation of the turntable 3, the power on / off and transmission of each station are completed, simplifying the control logic and improving the continuity of operation.

[0022] To ensure secure clamping and rotational stability of the workpiece, for example, such as Figure 4 , Figure 6 , Figure 7 As shown, the present invention also includes a transmission structure comprising a movable gear ring 19 rotatably connected to the outside of the rotating seat 4. A second gear structure 20 is provided on one side of the movable gear ring 19, meshing with the first gear 15. A second gear 21 is meshed with the outside of the movable gear ring 19. A horizontally arranged rotating shaft 22 is fixedly connected to one side of the second gear 21. One end of the rotating shaft 22 passes through the turntable 3 and is fixedly connected to a third gear 23. The rotating shaft 22 is rotatably connected to the turntable 3. The third gear 23 meshes with the first gear structure 18 of the arc-shaped counterweight rack 17.

[0023] In use, the first tooth structure 18 of the arc-shaped counterweight rack 17 meshes with the third gear 23. Power is transmitted to the first gear 15 via the rotating shaft 22, the second gear 21, and the moving gear ring 19, ultimately driving the clamping claw 12 to open. After the rotating seat 4 moves to the loading station, the third gear 23, the second gear 21, the moving gear ring 19 and the tooth structure remain meshed, and the clamping claw 12 remains open. After the workpiece is placed, the arc-shaped counterweight rack 17 continues to reset and move, the first tooth structure 18 disengages from the third gear 23, the power transmission is interrupted, and the clamping claw 12 automatically locks. When the rotating seat 4 moves to the welding station and rotates, the one-way bearing 14 prevents the power from being transmitted to the threaded rod 13. The transmission structure only follows the movement and does not interfere with the locking state, ensuring the workpiece clamping firmness and rotational stability.

[0024] To achieve the connection between the flange clamped on the rotating seat 4 and the end of the cylinder, for example, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the present invention also includes a fixed plate 24 fixedly connected to the end of the moving rod 5 away from the rotating seat 4, and a compression spring 25 and a rotating plate 26 connected in sequence to the side of the fixed plate 24 near the turntable 3. The rotating plate 26 is rotatably connected to the turntable 3. A connecting rod 27 is fixedly connected to the side of the driving gear 6 away from the rotating seat 4, and a ball bearing 28 is embedded at the end of the connecting rod 27 away from the driving gear 6. Each of the two sets of turntables 3 has a support plate 29 vertically fixed on the welding platform 1 on the side that is far apart from each other. The two ends of the drive shaft 2 pass through the turntable 3 in sequence and are rotatably connected to one side of the support plate 29. A guide rail 31 is provided between the turntable 3 and the support plate 29 by means of a bracket 30 and fixed on the support plate 29. The guide rail 31 has an arc-shaped structure that matches the moving direction of the turntable 3. A ramp 32 is provided on the guide rail 31 that presses against the ball bearing 28 and drives the moving rod 5 to move in the horizontal direction.

[0025] During use, as the rotating seat 4, after being clamped, rotates and moves upward to the welding station along with the turntable 3, the ball bearing 28 presses against the ramp 32 of the guide rail 31, pushing the ball bearing 28 to move horizontally. Simultaneously, the ball bearing 28 drives the connecting rod 27, the drive gear 6, and the moving rod 5 to slide horizontally along the turntable 3. The moving rod 5 drives the rotating seat 4 to move closer to the center of the two sets of turntables 3, realizing the docking of the flange clamped on the rotating seat 4 with the cylinder end, replacing manual alignment operation and improving docking accuracy and efficiency. After the flange and cylinder body are connected, the ball bearing 28 remains pressed against the ramp 32, and the moving rod 5 is fixed, so that the workpieces are kept tightly connected without relative displacement, ensuring welding stability. After welding, the rotating seat 4 moves to the unloading station, the ball bearing 28 slides off the ramp 32, the clamping claw 12 remains locked, and the compression spring 25 remains compressed. When unloading, the clamping claw 12 opens, the compression spring 25 returns to its original position, and the moving rod 5 and the rotating seat 4 return to their original positions, preparing for the clamping and docking of the next set of workpieces, improving the automation level and operation continuity of the device.

[0026] For example, such as Figure 2 As shown, the present invention also includes a drive motor 33 fixedly connected to one side of the bracket 30, and the output end of the drive motor 33 is coaxially connected to one end of the drive shaft 2.

[0027] When in use, start the drive motor 33, the motor drives the drive shaft 2, and provides a stable power source for the rotation of the drive shaft 2, thereby realizing the intermittent rotation of the drive shaft 2 at a fixed angle.

[0028] For example, such as Figure 1 As shown, the present invention also includes a base 34 at the lower part of the welding platform 1, a discharge port 35 communicating with the base 34 on the welding platform 1, a material collection frame inside the base 34, and a cabinet door 36 on one side of the base 34.

[0029] During use, the welded cylinder body and flange finished product move to the unloading station with the rotating seat 4. After the clamping claw 12 opens, the finished product falls and directly into the collection frame in the base 34 through the discharge port 35 on the welding platform 1. This realizes automatic unloading and collection of finished products, eliminating the need for manual material handling, reducing labor intensity, and avoiding damage caused by falling and bumping of finished products, thus ensuring product integrity. When the collection frame is full of finished products or waste, the cabinet door 36 on one side of the base 34 can be opened to pull the collection frame out of the base 34, completing the transfer of finished products and the cleaning of waste.

[0030] This invention also provides a welding process for a multi-station hydraulic cylinder body, employing the aforementioned multi-station hydraulic cylinder body welding device, specifically including the following steps: S1, drive shaft 2 drives two sets of turntables 3 to reset, damping ring 7 is synchronously reset under the gravity of counterweight drive structure, only the self-locking clamping structure of the lowest rotating seat 4 of turntable 3 is kept open by the transmission structure, and the self-locking clamping structure of the rotating seats 4 of other work positions is locked and ready to go. S2, drive shaft 2 drives two sets of turntables 3 to rotate synchronously, moving the open rotating seat 4 to the loading station. The self-locking clamping structure of this station is kept open by the transmission of the counterweight drive structure and the transmission structure. After the hydraulic cylinder body and flange are placed respectively, the counterweight drive structure continues to drive the damping rotating ring 7 to rotate and disengage from the transmission. The self-locking clamping structure automatically locks and completes the clamping. S3, drive shaft 2 continues to drive turntable 3 to rotate, the clamped rotating seat 4 moves to the welding station, the counterweight drive structure drives the damping rotating ring 7 to reset, the arc rack 8 meshes with the drive gear 6 at the end of the moving rod 5, driving the rotating seat 4 and the clamped cylinder and flange to rotate synchronously, completing the continuous circumferential welding at the joint. S4. After welding is completed, the turntable 3 drives the rotating seat 4 to move to the unloading station. The counterweight drive structure drives the damping rotating ring 7 to reset. The transmission structure drives the self-locking clamping structure of the station to open, and the welded finished product is automatically unloaded. S5, drive shaft 2 drives two sets of turntables 3 to rotate intermittently, each rotating seat 4 sequentially switches between loading station, welding station, standby station and unloading station. Through the cooperation of counterweight drive structure and damping rotating ring (7), the self-locking clamping structure is automatically locked and opened, and multi-station cyclic welding is continuously carried out.

[0031] When using this invention, before starting the device, the control drive shaft 2 drives the two sets of turntables 3 on the welding platform 1 to complete the reset action. The damping rotating ring 7 is synchronously reset to the initial position under the gravity of the counterweight drive structure. At this time, the self-locking clamping structure of the rotating seat 4 at the bottom of the turntable 3 is driven by the transmission structure to open, and the self-locking clamping structures of the rotating seats 4 at other work positions are all in the locked standby state. Then, the drive motor 33 drives the drive shaft 2 to rotate again, and the drive shaft 2 drives the two sets of turntables 3 to rotate synchronously, moving the rotating seat 4, which was originally in the open state, to the loading station opposite the left and right sets of turntables 3. The rotating seat 4 at this station is connected to the transmission structure through the counterweight drive structure, so that the self-locking clamping structure continues to open; the hydraulic cylinder body and flange are placed on the self-locking clamping structure of the corresponding rotating seat 4 of the left and right sets of turntables 3 respectively. After placement, the counterweight drive structure drives the damping swivel 7 to rotate, causing the damping swivel 7 to disengage from the transmission structure of the station. The self-locking clamping structure automatically locks under the return force of the torsion spring 16, completing the clamping of the cylinder body and the flange. The drive shaft 2 continues to drive the two sets of turntables 3 to rotate synchronously, moving the clamped rotating seat 4 to the welding position at the top of the turntable 3. As the rotating seat 4 rotates and moves upward with the turntable 3, the ball 28 at the end of the moving rod 5 presses against the ramp 32 of the guide rail 31, pushing the moving rod 5 to slide horizontally along the turntable 3, driving the rotating seat 4 to move closer to the center of the two sets of turntables 3, thus realizing the automatic docking of the flange and the cylinder end. The counterweight drive structure drives the damping swivel 7 to reset and rotate. The arc rack 8 on the inner side of the damping swivel 7 meshes with the drive gear 6 at the end of the moving rod 5 of the rotating seat 4, which drives the rotating seat 4 of the welding station to rotate in a circle, thereby driving the clamped cylinder and flange to rotate synchronously and uniformly; controlling the external welding robot arm to perform continuous circumferential welding at the joint between the cylinder and the flange. After welding is completed, the drive shaft 2 drives the two sets of turntables 3 to continue rotating, moving the welded rotating seat 4 to the unloading station at the bottom of the turntable 3. The ball bearing 28 slides off along the ramp 32, the compression spring 25 remains compressed, and the clamping claw 12 remains locked. The counterweight drive structure drives the damping rotating ring 7 to reset and rotate. Through the transmission structure, a transmission connection is established with the self-locking clamping structure of the rotating seat 4 at this station, driving the self-locking clamping structure to automatically open. After the cylinder body and flange welded product loses the clamping force, it falls. The finished product falls directly into the material collection box in the base 34 through the discharge port 35 on the welding platform 1, completing the automatic unloading. During unloading, the compression spring 25 resets, pushing the moving rod 5 and the rotating seat 4 to reset, preparing for the clamping and docking of the next set of workpieces. The control drive shaft 2 continuously drives two sets of turntables 3 to rotate intermittently at 90°, causing each rotating seat 4 to cycle between the loading station, welding station, standby station, and unloading station in sequence with the turntable 3. The counterweight drive structure and the damping rotating ring 7 work together to achieve automatic locking and opening of the self-locking clamping structure of the rotating seat 4 at each station. The operator only needs to continuously place the cylinder body and flange to be processed at the loading station, and the device can realize continuous multi-station cyclic welding operations, which greatly improves the batch welding production efficiency of hydraulic cylinder bodies and flanges and solves the problem of low efficiency caused by the serial process of single-station devices. The entire process only requires manual placement of workpieces at the loading station. The device has a high degree of automation and is suitable for the welding production needs of large batches of hydraulic cylinder bodies and flanges.

[0032] 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 protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station hydraulic cylinder body welding device, characterized in that, The assembly includes a welding platform (1), on which a horizontal drive shaft (2) is rotatably mounted. Both ends of the drive shaft (2) are fixedly connected to vertical turntables (3). On the opposite side of the two sets of turntables (3), several sets of rotating seats (4) are circumferentially distributed. The end of the rotating seat (4) away from the turntable (3) is equipped with a self-locking clamping structure. The outer side of the rotating seat (4) is provided with a transmission structure that is connected to the self-locking clamping structure and is used to drive the self-locking clamping structure to open. The side of the rotating seat (4) near the turntable (3) is fixedly connected to a horizontal moving rod (5). The moving rod (5) slides through the turntable (3) and extends outward. The end of the moving rod (5) away from the rotating seat (4) is fixedly connected to a drive gear (6). The side of the turntable (3) away from the rotating seat (4) is rotatably connected to a damping ring (7). The inner side of the damping ring (7) is fixedly connected to an arc rack (8) that meshes with the drive gear (6). The outer side of the damping ring (7) is provided with a counterweight drive structure.

2. The multi-station hydraulic cylinder body welding device according to claim 1, characterized in that, The self-locking clamping structure includes several sets of adjustment holes (9) circumferentially distributed on the side of the rotating seat (4). Nuts (10) are slidably connected in the adjustment holes (9). A moving groove (11) communicating with the adjustment holes (9) is provided on the side of the rotating seat (4) away from the turntable (3). A clamping claw (12) for clamping the cylinder or flange is slidably connected in the moving groove (11). One end of the nut (10) is fixedly connected to one side of the clamping claw (12). A vertically arranged threaded rod (13) is rotatably connected in the adjustment hole (9). The threaded rod (13) passes through the nut (10) and is threadedly connected to the nut (10). One end of the threaded rod (13) away from the center of the rotating seat (4) extends out of the adjustment hole (9) and is connected to the first gear (15) through a one-way bearing (14). A torsion spring (16) sleeved on the threaded rod (13) is connected between the threaded rod (13) and the rotating seat (4).

3. The multi-station hydraulic cylinder body welding device according to claim 2, characterized in that, The counterweight drive structure includes an arc-shaped counterweight rack (17) fixedly connected to the outside of the damping ring (7), and the outside of the arc-shaped counterweight rack (17) is provided with a first tooth structure (18) that meshes with the transmission structure.

4. The multi-station hydraulic cylinder body welding device according to claim 3, characterized in that, The transmission structure includes a movable gear ring (19) rotatably connected to the outside of the rotating seat (4). A second gear structure (20) is provided on one side of the movable gear ring (19) to mesh with the first gear (15). A second gear (21) meshes with the outside of the movable gear ring (19). A horizontally arranged rotating shaft (22) is fixedly connected to one side of the second gear (21). One end of the rotating shaft (22) passes through the turntable (3) and is fixedly connected to a third gear (23). The rotating shaft (22) is rotatably connected to the turntable (3). The third gear (23) meshes with the first gear structure (18) of the arc-shaped counterweight rack (17).

5. The multi-station hydraulic cylinder body welding device according to claim 4, characterized in that, A fixed plate (24) is fixedly connected to the end of the moving rod (5) away from the rotating seat (4). A compression spring (25) and a rotating plate (26) are connected in sequence on the side of the fixed plate (24) close to the turntable (3). The rotating plate (26) is rotatably connected to the turntable (3). A connecting rod (27) is fixed to the side of the drive gear (6) away from the rotating seat (4). A ball bearing (28) is embedded at the end of the connecting rod (27) away from the drive gear (6). Each of the two sets of turntables (3) has a support plate (29) that is vertically fixed on the welding platform (1) on the side away from each other. The two ends of the drive shaft (2) pass through the turntable (3) in sequence and are rotatably connected to one side of the support plate (29). A guide rail (31) is provided between the turntable (3) and the support plate (29) by means of a bracket (30) and fixed on the support plate (29). The guide rail (31) has an arc-shaped structure that matches the moving direction of the turntable (3). A ramp (32) is provided on the guide rail (31) that is pressed and contacted by the ball (28) and drives the moving rod (5) to move in the horizontal direction.

6. The multi-station hydraulic cylinder body welding device according to claim 5, characterized in that, A drive motor (33) is fixedly connected to one side of the bracket (30), and the output end of the drive motor (33) is coaxially connected to one end of the drive shaft (2).

7. A multi-station hydraulic cylinder body welding device according to claim 6, characterized in that, The welding platform (1) is provided with a base (34) at its lower part. The welding platform (1) is provided with a discharge port (35) that communicates with the base (34). The base (34) is provided with a material collection frame. The base (34) is provided with a cabinet door (36) on one side.

8. A welding process for a multi-station hydraulic cylinder body, characterized in that, The multi-station hydraulic cylinder body welding device according to any one of claims 1 to 7 specifically includes the following steps: S1. The drive shaft (2) drives the two sets of turntables (3) to reset. The damping ring (7) is reset synchronously under the gravity of the counterweight drive structure. Only the self-locking clamping structure of the lowest rotating seat (4) of the turntable (3) is kept open by the transmission structure, while the self-locking clamping structure of the rotating seats (4) of the other work positions is locked and ready to go. S2, drive shaft (2) drives two sets of turntables (3) to rotate synchronously, move the open rotating seat (4) to the loading station, the self-locking clamping structure of the station is kept open by the transmission of the counterweight drive structure and the transmission structure, after the hydraulic cylinder body and flange are placed respectively, the counterweight drive structure continues to drive the damping rotating ring (7) to rotate and disengage from the transmission, and the self-locking clamping structure automatically locks to complete the clamping; S3, the drive shaft (2) continues to drive the turntable (3) to rotate, the clamped rotating seat (4) moves to the welding station, the counterweight drive structure drives the damping rotating ring (7) to reset, the arc rack (8) meshes with the drive gear (6) at the end of the moving rod (5), driving the rotating seat (4) and the clamped cylinder and flange to rotate synchronously, completing the continuous circumferential welding at the joint; S4. After welding is completed, the turntable (3) drives the rotating seat (4) to move to the unloading station. The counterweight drive structure drives the damping rotating ring (7) to reset. The transmission structure drives the self-locking clamping structure of the station to open, and the welded finished product is automatically unloaded. S5. The drive shaft (2) drives two sets of turntables (3) to rotate intermittently. Each rotating seat (4) cycles through the loading station, welding station, standby station and unloading station. Through the cooperation of the counterweight drive structure and the damping rotating ring (7), the self-locking clamping structure is automatically locked and opened, and multi-station cyclic welding is continuously carried out.

Images