A rotary welding device and welding method for manufacturing hydraulic press

Abstract

The present invention relates to the technical field of hydraulic machine manufacturing, and specifically to a rotary welding device and welding method for hydraulic machine manufacturing, comprising a base and a fixing seat fixedly connected to both sides of the middle of the upper end surface of the base, a hydraulic oil cylinder is arranged inside the two fixing seats, a clamping assembly for fixing the hydraulic oil cylinder is arranged inside the fixing seat, the clamping assembly comprises a rotating ring rotatably connected inside the fixing seat, a handle is fixedly connected between the two rotating rings, and a support assembly for supporting the tail end of the hydraulic oil cylinder is arranged in the middle of both sides of the upper end surface of the base, the support assembly comprises a supporting arc plate, and a top column is fixedly connected to the middle lower end surface of the supporting arc plate. Compared with the prior art, the present application solves a series of problems in the prior art, such as the welding surface of the hydraulic oil cylinder deflects when the welding device is in use, which makes it difficult to ensure the welding quality, thereby reducing the manufacturing quality of the hydraulic press.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic machine manufacturing, and in particular to a rotary welding device and a welding method for hydraulic machine manufacturing. Background Art

[0002] A hydraulic press is a machine that uses the static pressure of liquid to transfer energy to achieve various processes. It is widely used in the processing of metals, plastics and other materials. One of its core components is the hydraulic cylinder, which converts hydraulic energy into mechanical energy and completes the work through the linear reciprocating motion of the piston. In the manufacturing process of the hydraulic press, it is sometimes necessary to weld and splice two or more hydraulic cylinders to meet specific process requirements. This welding and splicing technology can significantly improve the overall rigidity and stability of the mechanical structure and improve the working efficiency of the hydraulic system. In addition, welding and splicing can effectively improve the load-bearing capacity and maintenance performance of material transportation equipment, providing more reliable support for the work of the hydraulic press.

[0003] In the prior art, a Chinese patent document with publication number CN116921824B proposes a double-station hydraulic cylinder welding device, including a welding robot and two groups of rotating support mechanisms. The welding robot includes a six-axis mechanical arm and a welding mechanism. The rotating support mechanism includes a head frame, a first bracket and a tail frame distributed in sequence. The head frame includes a chuck that can rotate and move back and forth. The first bracket includes a plurality of first support wheel groups. Although the application can be used to load and unload materials and weld at the same time, and when the double-station welding is alternately performed, the first bracket assists in rapid positioning and improves the stability of the hydraulic cylinder welding. The second bracket and the conveyor are used to automatically load and unload materials, and the double-station rapid alternating welding operations are performed, which significantly improves the automated welding efficiency and welding quality of the hydraulic cylinder, but the technology Consistent with the traditional method, the hydraulic press needs to weld and splice two hydraulic cylinders during the production process, and needs to rotate during welding. Due to the long length of the hydraulic cylinder, after the traditional method completes the clamping of one end of the hydraulic cylinder, the supporting structure at the rear end of the hydraulic cylinder is difficult to rise or fall with the movement of the clamping structure, resulting in the hydraulic cylinder being difficult to maintain a horizontal state after clamping hydraulic cylinders of different diameters, and will tilt slightly to one side of the supporting structure, which causes the welding surface to deflect, and it is difficult to ensure the welding quality after the two hydraulic cylinders are rotated and welded, thereby reducing the overall quality of the hydraulic press. In addition, after the welding is completed, it is necessary to manually use a scraper to clean the residue at the welding point, which reduces the welding efficiency of the equipment and is dangerous.

[0004] Furthermore, we disclose a rotary welding device and a welding method for manufacturing hydraulic presses to meet the actual demand that the welding surface of the hydraulic cylinder of the welding device in the prior art will deflect when in use, making it difficult to ensure the welding quality, thereby reducing the overall quality of the hydraulic press. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a rotary welding device and welding method for hydraulic press manufacturing, so as to solve a series of problems in the prior art that the welding surface of the hydraulic cylinder will deflect when the welding device is in use, making it difficult to ensure the welding quality, thereby reducing the manufacturing quality of the hydraulic press.

[0006] Based on the above-mentioned purpose, the present invention provides a rotary welding device for manufacturing a hydraulic press, comprising: a base and a fixed seat fixedly connected to both sides of the middle part of the upper end surface of the base, a hydraulic cylinder is arranged inside the two fixed seats, a clamping assembly for fixing the hydraulic cylinder is arranged inside the fixed seat, the clamping assembly comprises a rotating ring rotatably connected inside the fixed seat, a handle is fixedly connected between the two rotating rings, a supporting assembly for supporting the tail end of the hydraulic cylinder is arranged in the middle part of both sides of the upper end surface of the base, the supporting assembly comprises a supporting arc plate, a top column is fixedly connected to the middle lower end surface of the supporting arc plate, a lifting assembly for controlling the top column to rise and fall is arranged at the lower end of the top column, the lifting assembly is linked with the clamping assembly, a welding slag cleaning assembly for cleaning the surface of the welding part of the hydraulic cylinder is arranged between the clamping plates located at the bottom inside the two fixed seats, and the welding slag cleaning assembly comprises a connecting frame, and the two ends of the connecting frame are respectively fixedly connected to the clamping plates inside the fixed seats on both sides.

[0007] Preferably, the inner wall of the rotating ring is fixedly connected with a plurality of arc blocks at uniform intervals, and the inner walls of the plurality of arc blocks are provided with sliding grooves, and the interior of the fixed seat is slidably connected with a plurality of support rods at uniform intervals, and the number of the support rods is the same as the number of the arc blocks, one end of the support rod is slidably engaged with the sliding groove on the arc block, and the end of the support rod away from the arc block is fixedly connected with a clamping plate, and the lower end surface of the clamping plate is fixedly connected with a plurality of telescopic springs at uniform intervals, the support rod is located inside the telescopic spring in the middle, and two second rollers are rotatably connected to both sides of the middle of the clamping plate.

[0008] Preferably, a rotating seat is fixedly connected to the middle part of one side of the upper end surface of the base, a stabilizing spring is rotatably connected to the upper end of the rotating seat, and a draw hook is fixedly connected to the upper end of the stabilizing spring.

[0009] Preferably, a tooth block is fixedly connected to the lower end of the outer wall of the rotating ring, and the lower end of the tooth block is meshedly connected to a spur gear, one end of the spur gear is fixedly connected to a driving bevel gear through a connecting shaft, the lower end of the driving bevel gear is meshedly connected to a driven bevel gear, the lower end of the driven bevel gear passes through the base through a connecting shaft and is fixedly connected to a winding column, a pull rope is spirally wound on the outer wall of the winding column, one end of the pull rope away from the winding column is fixedly connected to the lower end of the top column, and one end of the pull rope away from the top column is fixedly connected to the winding column.

[0010] Preferably, the support assembly also includes a fixed sleeve fixedly connected to the upper end of the base, the lower end of the top column is slidably connected to the inside of the fixed sleeve, the inner bottom surface of the fixed sleeve is fixedly connected to a return spring, the upper end of the return spring is fixedly connected to the top column, and the pull rope is located at one end of the fixed sleeve and placed inside the return spring.

[0011] Preferably, the upper end of the supporting arc plate is rotatably connected to a plurality of first rollers at even intervals, guide columns are fixedly connected to both sides of the lower end surface of the supporting arc plate, the lower ends of the two guide columns are slidably connected to guide cylinders, and the lower ends of the two guide cylinders are fixedly connected to the base.

[0012] Preferably, the welding slag cleaning assembly also includes limit springs fixedly connected to both sides of the middle part of the connecting frame, scrapers are fixedly connected to the upper ends of the two limit springs, a chip groove is provided on the side of the scraper away from the limit springs, a collection box is fixedly connected to the middle part of the lower end surface of the base, a collection box is slidably connected to the inside of the collection box, and a rectangular groove is opened in the middle part of the base.

[0013] Preferably, both ends of one side of the upper end surface of the base are fixedly connected to support seats, the upper ends of the two support seats are rotatably connected to main friction wheels, the upper ends of one side of the two support seats are rotatably connected to a clamping seat, one side of the clamping seat is rotatably connected to a secondary friction wheel, the main friction wheel is in contact with the secondary friction wheel, and the secondary friction wheel is in contact with the hydraulic cylinder, a connecting spring is fixedly connected to the middle lower end of the clamping seat, the lower end of the connecting spring is fixedly connected to the support seat, a mounting seat is fixedly connected at a corner of the upper end surface of the base, a servo motor is arranged on the upper end of one side end surface of the mounting seat, and the output ends of the servo motors pass through the two support seats and are fixedly connected to the main friction wheels inside them.

[0014] Preferably, a sliding seat is fixedly connected to the middle part of the side of the upper end surface of the base away from the rotating seat, a lifting frame is slidably connected inside the sliding seat, a welding head is provided on one side of the upper end of the lifting frame, a threaded rod is threadedly connected to one side of the lifting frame, and the lower end of the threaded rod is engaged and rotatably connected to the inside of the sliding seat.

[0015] A rotary welding method for manufacturing a hydraulic press, applied to the above-mentioned rotary welding device for manufacturing a hydraulic press, comprises the following steps:

[0016] S1: Place the ends of the two hydraulic cylinders to be welded into the two fixing seats respectively, pull the handles, and drive the two rotating rings to rotate through the handles. The rotation of the rotating rings further drives the support rods to slide inside the fixing seats, thereby adjusting the distance between the clamping plates to adapt to hydraulic cylinders of different sizes;

[0017] S2: When the clamping plate generates appropriate clamping force on the hydraulic cylinder, stop pulling the handle, pull the hook, and put the hook on the handle to ensure that the handle remains stable during the welding process, thereby maintaining the clamping force of the clamping plate;

[0018] S3: When the rotating ring rotates, the gear block synchronously drives the spur gear to rotate. The rotation of the spur gear drives the winding column to rotate through the mutual engagement of the active bevel gear and the driven bevel gear. The different rotation directions of the winding column can realize the work of pulling the rope and releasing the rope, thereby adjusting the height of the top column and the supporting arc plate to ensure the stability of the hydraulic cylinder;

[0019] S4: Rotate the threaded rod to make the lifting frame move up and down on the sliding seat to meet the welding requirements of hydraulic cylinders with different diameters and reduce the limitations of the device;

[0020] S5: Start the servo motor, which drives the main friction wheels inside the two support seats to rotate. The main friction wheels further drive the secondary friction wheels to rotate. The secondary friction wheels contact the hydraulic cylinder and drive it to rotate to achieve the welding of the two hydraulic cylinders. When welding hydraulic cylinders of different diameters, the secondary friction wheel will rotate around the main friction wheel, and maintain a certain friction force on the outer wall of the hydraulic cylinder through the action of the connecting spring, ensuring that the secondary friction wheel can drive the hydraulic cylinder to rotate;

[0021] S6: During the welding process, the scraper keeps in contact with the welding part of the hydraulic cylinder surface under the action of the limit spring. When the hydraulic cylinder rotates, the residue at the welding part is scraped off by the scraper and falls into the collection box through the chip groove and the rectangular groove, completing the collection of the residue;

[0022] S7: After welding is completed, wait for the weld to cool and solidify, remove the hook, release the handle and rotating ring, carefully remove the welded hydraulic cylinder from the fixed seat, clean the work area, and check whether the various parts of the device are damaged or require maintenance.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Through the design of the rotating ring and the handle, the user can easily adjust the state of the clamping assembly to quickly fix and release hydraulic cylinders of different diameters. The support assembly composed of the support arc plate and the top column provides stable support for the hydraulic cylinder, especially during the welding process, which can effectively prevent deformation or dislocation caused by gravity. The lifting assembly is linked with the clamping assembly. When the clamping assembly clamps hydraulic cylinders of different diameters, the support height of the support arc plate is also different, so that the hydraulic cylinder can always maintain a horizontal state, ensuring that the welding surface of the hydraulic cylinder will not deflect, thereby improving the welding quality of the two hydraulic cylinders after rotation welding.

[0025] 2. The device is provided with a welding slag cleaning component between two fixed seats. The connecting frame in the welding slag cleaning component is fixedly connected to the clamping plates inside the fixed seats on both sides, so that the scraper on the connecting frame can move synchronously while the clamping assembly drives the clamping plates to move. It is suitable for welding slag cleaning work of hydraulic cylinders with different diameters. The connection with the clamping plates can ensure its stability during the cleaning process. The welding slag cleaning component can effectively remove impurities and welding slag on the surface of the welding part, provide a clean working environment for subsequent welding work, improve the welding efficiency of the equipment and reduce the risk of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention from a rear view;

[0029] Figure 3 It is a three-dimensional schematic diagram of the clamping and adjusting structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the interior of the clamping and adjusting structure of the present invention;

[0031] Figure 5 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0032] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the support arc plate height adjustment assembly of the present invention;

[0033] Figure 7 It is a schematic diagram of a partial three-dimensional structure of a welding slag cleaning assembly of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the scraper of the present invention;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the hydraulic cylinder rotating assembly of the present invention;

[0036] Fig.10 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention.

[0037] The markings in the figure are:

[0038] 1. Base; 2. Fixed seat; 3. Collection box; 4. Sliding seat; 5. Lifting frame; 6. Threaded rod; 7. Welding head; 8. Rotating ring; 9. Slide; 10. Arc block; 11. Tooth block; 12. Active bevel gear; 13. Spur gear; 14. Handle; 15. Top column; 16. Fixed sleeve; 17. Reset spring; 18. Pull rope; 19. Winding column; 20. Driven bevel gear; 21. Guide cylinder; 22. Guide column; 23. First roller; 24. Support Arc support plate; 25. Telescopic spring; 26. Support rod; 27. Connecting frame; 28. Limit spring; 29. ​​Scraper; 30. Clamping plate; 31. Second roller; 32. Chip groove; 33. Connecting spring; 34. Auxiliary friction wheel; 35. Clamping seat; 36. Support seat; 37. Main friction wheel; 38. Rectangular groove; 39. Collecting box; 40. Rotating seat; 41. Stabilizing spring; 42. Draw hook; 43. Servo motor; 44. Mounting seat; 45. Hydraulic cylinder. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0040] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] like Figures 1 to 10As shown, a rotary welding device for manufacturing a hydraulic press comprises: a base 1 and a fixing seat 2 fixedly connected to both sides of the middle of the upper end surface of the base 1, a hydraulic cylinder 45 is arranged inside the two fixing seats 2, a clamping assembly for fixing the hydraulic cylinder 45 is arranged inside the fixing seat 2, the clamping assembly comprises a rotating ring 8 rotatably connected inside the fixing seat 2, a handle 14 is fixedly connected between the two rotating rings 8, a supporting assembly for supporting the tail end of the hydraulic cylinder 45 is arranged in the middle of both sides of the upper end surface of the base 1, the supporting assembly comprises a supporting arc plate 24, and the middle lower end surface of the supporting arc plate 24 A top column 15 is fixedly connected, and a lifting assembly for controlling the top column 15 to rise and fall is arranged at the lower end of the top column 15. The lifting assembly is linked with the clamping assembly. A welding slag cleaning assembly for cleaning the surface of the welding part of the hydraulic cylinder 45 is arranged between the clamping plates 30 at the bottom inside the two fixed seats 2. The welding slag cleaning assembly includes a connecting frame 27, and the two ends of the connecting frame 27 are respectively fixedly connected to the clamping plates 30 inside the fixed seats 2 on both sides. Through the design of the rotating ring 8 and the handle 14, the user can easily adjust the state of the clamping assembly to realize the hydraulic cylinders 45 of different diameters. Fast fixation and release, the support assembly composed of the support arc plate 24 and the top column 15 provides stable support for the hydraulic cylinder 45, especially in the welding process, it can effectively prevent deformation or dislocation caused by gravity, and the lifting assembly is linked with the clamping assembly. When the clamping assembly clamps the hydraulic cylinders 45 of different diameters, the support height of the support arc plate 24 is also different, so that the hydraulic cylinder 45 can always maintain a horizontal state, ensuring that the welding surface of the hydraulic cylinder 45 will not deflect, improving the welding quality of the two hydraulic cylinders 45 after rotation welding, and in addition, the two fixing seats 2 is provided with a welding slag cleaning component, and the connecting frame 27 in the welding slag cleaning component is fixedly connected to the clamping plate 30 inside the fixing seat 2 on both sides, so that the scraper 29 on the connecting frame 27 can move synchronously while the clamping assembly drives the clamping plate 30 to move, which is suitable for the welding slag cleaning work of hydraulic cylinders 45 with different diameters. The connection with the clamping plate 30 can ensure its stability during the cleaning process. The welding slag cleaning component can effectively remove impurities and welding slag on the surface of the welding part, provide a clean working environment for subsequent welding work, improve the welding efficiency of the equipment and reduce the risk of operation.

[0042] Further, such as Figure 3 , Figure 4 , Figure 7 , Fig.10As shown, the inner wall of the rotating ring 8 is evenly spaced and fixedly connected with a plurality of arc blocks 10, and the inner walls of the plurality of arc blocks 10 are provided with slide grooves 9, and the interior of the fixed seat 2 is evenly spaced and slidably connected with a plurality of support rods 26, and the number of the support rods 26 is the same as the number of the arc blocks 10, and one end of the support rod 26 is slidably engaged with the slide groove 9 on the arc block 10, and the end of the support rod 26 away from the arc block 10 is fixedly connected with a clamping plate 30, and the lower end surface of the clamping plate 30 is evenly spaced and fixedly connected with a plurality of telescopic springs 25, and the support rod 26 is located inside the telescopic spring 25 in the middle, and two second rollers 31 are rotatably connected to both sides of the middle part of the clamping plate 30, and a rotating seat 40 is fixedly connected to the middle part of one side of the upper end surface of the base 1, and the upper end of the rotating seat 40 A stabilizing spring 41 is rotatably connected, and a draw hook 42 is fixedly connected to the upper end of the stabilizing spring 41. When the hydraulic cylinder 45 is clamped, the ends of the two hydraulic cylinders 45 that need to be welded are first placed inside the two fixed seats 2 respectively, and the handle 14 is pulled. The handle 14 drives the two rotating rings 8 to rotate, and the rotation of the rotating ring 8 drives the support rod 26 to slide inside the fixed seat 2, thereby achieving the purpose of adjusting the distance of the clamping plate 30. When the clamping plate 30 has a certain clamping force on the hydraulic cylinder 45, the draw hook 42 is pulled so that the draw hook 42 is sleeved on the handle 14 to ensure that the handle 14 is stable, so that the clamping plate 30 can maintain the clamping force on the hydraulic cylinder 45 during welding, thereby improving the welding stability.

[0043] Further, such as Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, a tooth block 11 is fixedly connected to the lower end of the outer wall of the rotating ring 8, and a spur gear 13 is meshedly connected to the lower end of the tooth block 11. One end of the spur gear 13 is fixedly connected to the active bevel gear 12 through a connecting shaft, and the lower end of the active bevel gear 12 is meshedly connected to the driven bevel gear 20. The lower end of the driven bevel gear 20 passes through the base 1 through a connecting shaft and is fixedly connected to a winding column 19. A pull rope 18 is spirally wound around the outer wall of the winding column 19, and one end of the pull rope 18 away from the winding column 19 is fixedly connected to the lower end of the top column 15, and the one end of the pull rope 18 away from the top column 15 is fixedly connected to the winding column 19. The support assembly also includes a fixed sleeve 16 fixedly connected to the upper end of the base 1, and the lower end of the top column 15 is slidably connected to the inside of the fixed sleeve 16. A reset spring 17 is fixedly connected to the inner bottom surface of the fixed sleeve 16, and the upper end of the reset spring 17 is fixedly connected to the top column 15. One end of the pull rope 18 is located in the fixed sleeve 16 and is placed inside the reset spring 17. The upper ends of the support arc plates 24 are all A plurality of first rollers 23 are connected to rotate at even intervals, and guide columns 22 are fixedly connected to both sides of the lower end surface of the supporting arc plate 24. The lower ends of the two guide columns 22 are slidably connected to guide cylinders 21, and the lower ends of the two guide cylinders 21 are fixedly connected to the base 1. When the rotating ring 8 rotates, the tooth block 11 synchronously drives the spur gear 13 to rotate, and the spur gear 13 rotates and drives the winding roller to rotate by the mutual meshing of the bevel gears. The different rotation directions of the winding roller can realize the work of collecting and releasing the pull rope 18 and the pull rope 18 of the winding roller. When the rotating ring 8 rotates to make the clamping plate 30 move upward, the winding roller completes the line release work, and the top column 15 moves upward through the action of the reset spring 17 and drives the supporting arc plate 24 to move upward. When the clamping plate 30 moves downward, the winding roller collects the pull rope 18, so that the top column 15 moves downward. Through this structural design, the height of the supporting arc plate 24 can move with the movement of the clamping plate 30, thereby ensuring the stability of the hydraulic cylinder 45.

[0044] Further, such as Figure 7 , Figure 8 As shown, the welding slag cleaning assembly also includes a limit spring 28 fixedly connected to both sides of the middle part of the connecting frame 27, and the upper ends of the two limit springs 28 are fixedly connected with a scraper 29. A chip groove 32 is provided on the side of the scraper 29 away from the limit spring 28. A collecting box 3 is fixedly connected to the middle part of the lower end surface of the base 1, and a collecting box 39 is slidably connected inside the collecting box 3. A rectangular groove 38 is provided in the middle part of the base 1. The hydraulic cylinder 45 will rotate during welding. At this time, the upper end of the scraper 29 is in contact with the welding part of the surface of the hydraulic cylinder 45 through the action of the limit spring 28. When the hydraulic cylinder 45 rotates, the residue at the welding part will be separated from the surface of the hydraulic cylinder 45 through the action of the scraper 29. The separated residue falls from the rectangular groove 38 into the collecting box through the chip groove 32 to complete the collection of the residue.

[0045] Further, such as Figure 2 , Fig. 9 As shown, both ends of one side of the upper end surface of the base 1 are fixedly connected with support seats 36, and the upper ends of the two support seats 36 are rotatably connected with main friction wheels 37. The upper ends of one side of the two support seats 36 are rotatably connected with a clamping seat 35, and one side of the clamping seat 35 is rotatably connected with a secondary friction wheel 34. The main friction wheel 37 is in contact with the secondary friction wheel 34, and the secondary friction wheel 34 is in contact with the hydraulic cylinder 45. The middle lower end of the clamping seat 35 is fixedly connected with a connecting spring 33, and the lower end of the connecting spring 33 is fixedly connected with the support seat 36. A corner of the upper end surface of the base 1 is fixedly connected with a mounting seat 44, and a servo motor 43 is arranged on the upper end of one side end surface of the mounting seat 44. The output ends of the servo motors 43 all pass through the two support seats 36 and are fixedly connected to the main friction wheels 37 inside them. When welding is required When connected, the servo motor 43 is started, and the servo motor 43 drives the main friction wheels 37 inside the two support seats 36 to rotate, and the main friction wheels 37 drive the auxiliary friction wheels 34 to rotate. Since the auxiliary friction wheel 34 is in contact with the hydraulic cylinder 45, the auxiliary friction wheel 34 can drive the hydraulic cylinder 45 to rotate, so that the hydraulic cylinder 45 can rotate to complete the welding work of the two hydraulic cylinders 45. When welding hydraulic cylinders 45 of different diameters, the auxiliary friction wheel 34 will rotate around the main friction wheel 37. Through the action of the connecting spring 33, the auxiliary friction wheel 34 always maintains a certain friction force on the outer wall of the hydraulic cylinder 45, so that when welding hydraulic cylinders 45 of different diameters, the auxiliary friction wheel 34 can also drive the hydraulic cylinder 45 to rotate.

[0046] Further, such as Fig.10 As shown, a sliding seat 4 is fixedly connected to the middle part of the side of the upper end surface of the base 1 away from the rotating seat 40, and a lifting frame 5 is slidably connected to the inside of the sliding seat 4. A welding head 7 is arranged on one side of the upper end of the lifting frame 5, and a threaded rod 6 is threadedly connected to one side of the lifting frame 5. The lower end of the threaded rod 6 is engaged and rotatably connected to the inside of the sliding seat 4. When the clamping assembly completes the clamping work of the hydraulic cylinder 45, the lifting frame is raised and lowered on the sliding seat by rotating the threaded rod, and the height adjustment work of the welding head is completed, so that it is convenient to carry out the welding work of hydraulic cylinders 45 of different diameters, thereby reducing the use limitations of the welding device.

[0047] An embodiment of the present invention further provides a rotary welding method for manufacturing a hydraulic press, which is applied to the above-mentioned rotary welding device for manufacturing a hydraulic press, and comprises the following steps:

[0048] S1: Place the ends of the two hydraulic cylinders 45 to be welded into the two fixing seats 2 respectively, pull the handle 14, and drive the two rotating rings 8 to rotate through the handle 14. The rotation of the rotating ring 8 further drives the support rod 26 to slide inside the fixing seat 2, thereby adjusting the distance between the clamping plates 30 to adapt to hydraulic cylinders 45 of different sizes;

[0049] S2: When the clamping plate 30 generates an appropriate clamping force on the hydraulic cylinder 45, stop pulling the handle 14, pull the hook 42, and put the hook 42 on the handle 14 to ensure that the handle 14 remains stable during the welding process, thereby maintaining the clamping force of the clamping plate 30;

[0050] S3: When the rotating ring 8 rotates, the tooth block 11 synchronously drives the spur gear 13 to rotate. The rotation of the spur gear 13 drives the winding column 19 to rotate through the mutual engagement of the active bevel gear 12 and the driven bevel gear 20. The winding column 19 rotates in different directions to realize the work of collecting and releasing the pull rope 18, thereby adjusting the height of the top column 15 and the supporting arc plate 24 to ensure the stability of the hydraulic cylinder 45;

[0051] S4: Rotate the threaded rod 6 to make the lifting frame 5 move up and down on the sliding seat 4 to meet the welding requirements of hydraulic cylinders 45 with different diameters and reduce the use limitations of the device;

[0052] S5: Start the servo motor 43, which drives the main friction wheels 37 inside the two support seats 36 to rotate. The main friction wheels 37 further drive the auxiliary friction wheels 34 to rotate. The auxiliary friction wheels 34 contact the hydraulic cylinder 45 and drive it to rotate, so as to realize the welding of the two hydraulic cylinders 45. When welding hydraulic cylinders 45 with different diameters, the auxiliary friction wheel 34 will rotate around the main friction wheel 37, and maintain a certain friction force on the outer wall of the hydraulic cylinder 45 through the action of the connecting spring 33, so as to ensure that the auxiliary friction wheel 34 can drive the hydraulic cylinder 45 to rotate;

[0053] S6: During the welding process, the scraper 29 is kept in contact with the welding position of the surface of the hydraulic cylinder 45 under the action of the limit spring 28. When the hydraulic cylinder 45 rotates, the residue at the welding position is scraped off by the scraper 29 and falls into the collection box 3 through the chip groove 32 and the rectangular groove 38, completing the collection of the residue;

[0054] S7: After welding is completed, wait for the weld to cool and solidify, remove the hook 42, release the handle 14 and the rotating ring 8, carefully remove the welded hydraulic cylinder 45 from the fixing seat 2, clean the working area, and check whether the components of the device are damaged or need maintenance.

[0055] By adopting the above-mentioned rotary welding method for hydraulic machine manufacturing, by adjusting the distance of the clamping plate 30 and the height of the supporting arc plate 24, the device can accurately adapt to hydraulic cylinders 45 of different sizes, ensuring the stability and safety of the cylinder during welding. Secondly, the height adjustment function of the welding head 7 enables the device to cope with cylinders of different diameters, expands its scope of application, and reduces the limitations of use. Furthermore, the automatic cleaning function of welding residues not only improves work efficiency, but also ensures the cleanliness of the working environment. Finally, the servo motor 43 and the friction wheel are used to realize the rotary welding of the hydraulic cylinder 45, making the welding process more uniform and improving the welding quality. The automation and accuracy of the entire work process greatly improve the efficiency and stability of welding.

[0056] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0057] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary welding device for hydraulic press manufacturing, include: A base (1) and a fixing seat (2) fixedly connected to both sides of the middle of the upper end surface of the base (1), wherein the two fixing seats (2) are both provided with a hydraulic cylinder (45), characterized in that: a clamping assembly for fixing the hydraulic cylinder (45) is provided inside the fixing seat (2), the clamping assembly comprises a rotating ring (8) rotatably connected to the inside of the fixing seat (2), a handle (14) is fixedly connected between the two rotating rings (8), and a support assembly for supporting the tail end of the hydraulic cylinder (45) is provided in the middle of both sides of the upper end surface of the base (1), the support assembly comprises a supporting arc plate (24), a top column (15) is fixedly connected to the middle lower end surface of the supporting arc plate (24), and the top column (15) A lifting assembly for controlling the top column (15) to rise and fall is provided at the lower end thereof, the lifting assembly being linked to the clamping assembly, a welding slag cleaning assembly for cleaning the surface of the welding part of the hydraulic cylinder (45) is provided between the clamping plates (30) located at the bottom inside the two fixed seats (2), the welding slag cleaning assembly comprising a connecting frame (27), the two ends of the connecting frame (27) being fixedly connected to the clamping plates (30) inside the fixed seats (2) on both sides, the inner wall of the rotating ring (8) being fixedly connected with a plurality of arc blocks (10) at uniform intervals, the inner walls of the plurality of arc blocks (10) being provided with sliding grooves (9), the interior of the fixed seat (2) being slidably connected with a plurality of support rods (26) at uniform intervals, the support rods (2 The number of the plurality of arc blocks (6) is the same as the number of the arc blocks (10), one end of the support rod (26) is slidably connected to the slide groove (9) on the arc block (10), the end of the support rod (26) away from the arc block (10) is fixedly connected to a clamping plate (30), the lower end surface of the clamping plate (30) is evenly and fixedly connected to a plurality of telescopic springs (25), the support rod (26) is located inside the telescopic spring (25) in the middle, both sides of the middle part of the clamping plate (30) are rotatably connected to two second rollers (31), the middle part of one side of the upper end surface of the base (1) is fixedly connected to a rotating seat (40), the upper end of the rotating seat (40) is rotatably connected to a stabilizing spring (41), and the upper end of the stabilizing spring (41) is fixedly connected A draw hook (42) is provided, the lower end of the outer wall of the rotating ring (8) is fixedly connected to a tooth block (11), the lower end of the tooth block (11) is meshedly connected to a spur gear (13), one end of the spur gear (13) is fixedly connected to a driving bevel gear (12) via a connecting shaft, the lower end of the driving bevel gear (12) is meshedly connected to a driven bevel gear (20), the lower end of the driven bevel gear (20) passes through the base (1) via a connecting shaft and is fixedly connected to a winding column (19), a pull rope (18) is spirally wound around the outer wall of the winding column (19), one end of the pull rope (18) away from the winding column (19) is fixedly connected to the lower end of the top column (15), and one end of the pull rope (18) away from the top column (15) is fixedly connected to the winding column (19),The welding slag cleaning assembly also includes limit springs (28) fixedly connected to both sides of the middle of the connecting frame (27), the upper ends of the two limit springs (28) are fixedly connected to scrapers (29), and the scraper (29) is provided with a chip removal groove (32) on the side away from the limit springs (28). The middle part of the lower end surface of the base (1) is fixedly connected to a collection box (3), and the interior of the collection box (3) is slidably connected to a collection box (39). The middle part of the base (1) is provided with a rectangular groove (38), and both ends of one side of the upper end surface of the base (1) are fixedly connected to support seats (36), and the upper ends of the two support seats (36) are rotatably connected to main friction wheels (37), and the upper ends of one side of the two support seats (36) are rotatably connected to a clamping seat (35), and one side of the clamping seat (35) is rotatably connected to a secondary friction wheel (34), and the main friction wheel (37) contacts the secondary friction wheel (34), and the secondary friction wheel (34) is in contact with the main friction wheel (37). The friction wheel (34) is in contact with the hydraulic cylinder (45); a connecting spring (33) is fixedly connected to the lower middle end of the clamping seat (35); the lower end of the connecting spring (33) is fixedly connected to the support seat (36); a mounting seat (44) is fixedly connected to a corner of the upper end surface of the base (1); a servo motor (43) is arranged on the upper end of one side of the mounting seat (44); the output ends of the servo motor (43) pass through the two support seats (36) and are fixedly connected to the main friction wheel (37) inside the servo motor (43); a sliding seat (4) is fixedly connected to the middle of the side of the upper end surface of the base (1) away from the rotating seat (40); a lifting frame (5) is slidably connected inside the sliding seat (4); a welding head (7) is arranged on one side of the upper end of the lifting frame (5); a threaded rod (6) is threadedly connected to one side of the lifting frame (5); the lower end of the threaded rod (6) is engaged and rotatably connected to the inside of the sliding seat (4).

2. A rotary welding device for manufacturing a hydraulic press according to claim 1, Features: The support assembly further comprises a fixed sleeve (16) fixedly connected to the upper end of the base (1); the lower end of the top column (15) is slidably connected to the interior of the fixed sleeve (16); a return spring (17) is fixedly connected to the inner bottom surface of the fixed sleeve (16); the upper end of the return spring (17) is fixedly connected to the top column (15); and one end of the pull rope (18) is located in the fixed sleeve (16) and is placed inside the return spring (17).

3. A rotary welding device for manufacturing a hydraulic press according to claim 2, Features: The upper end of the supporting arc plate (24) is rotatably connected to a plurality of first rollers (23) at even intervals, and both sides of the lower end surface of the supporting arc plate (24) are fixedly connected to guide columns (22), and the lower ends of the two guide columns (22) are slidably connected to guide cylinders (21), and the lower ends of the two guide cylinders (21) are fixedly connected to the base (1).

4. A rotary welding method for manufacturing a hydraulic press, applied to the rotary welding device for manufacturing a hydraulic press as claimed in claim 3, It is characterized in that The following steps are involved: S1: Place the ends of the two hydraulic cylinders (45) to be welded into the interior of the two fixed seats (2), respectively, pull the handle (14), and drive the two rotating rings (8) to rotate through the handle (14). The rotation of the rotating ring (8) further drives the support rod (26) to slide inside the fixed seat (2), thereby adjusting the distance between the clamping plates (30) to accommodate hydraulic cylinders (45) of different sizes; S2: When the clamping plate (30) generates an appropriate clamping force on the hydraulic cylinder (45), stop pulling the handle (14), pull the hook (42), and sleeve the hook (42) on the handle (14), so as to ensure that the handle (14) remains stable during the welding process, thereby maintaining the clamping force of the clamping plate (30); S3: When the rotating ring (8) rotates, the tooth block (11) synchronously drives the spur gear (13) to rotate. The rotation of the spur gear (13) drives the winding column (19) to rotate through the mutual engagement of the active bevel gear (12) and the driven bevel gear (20). The different rotation directions of the winding column (19) can realize the work of collecting the pull rope (18) and releasing the pull rope (18), thereby adjusting the height of the top column (15) and the supporting arc plate (24) to ensure the stability of the hydraulic cylinder (45); S4: rotating the threaded rod (6) so that the lifting frame (5) is lifted and lowered on the sliding seat (4) to meet the welding requirements of hydraulic cylinders (45) with different diameters and reduce the limitations of the device; S5: starting the servo motor (43), the servo motor (43) drives the main friction wheels (37) inside the two support seats (36) to rotate, the main friction wheels (37) further drives the secondary friction wheels (34) to rotate, the secondary friction wheels (34) contact the hydraulic cylinder (45) and drive it to rotate, so as to achieve the welding work of the two hydraulic cylinders (45). When welding hydraulic cylinders (45) of different diameters, the secondary friction wheel (34) will rotate around the main friction wheel (37), and maintain a certain friction force on the outer wall of the hydraulic cylinder (45) through the action of the connecting spring (33), so as to ensure that the secondary friction wheel (34) can drive the hydraulic cylinder (45) to rotate; S6: During the welding process, the scraper (29) maintains contact with the welding position of the surface of the hydraulic cylinder (45) under the action of the limit spring (28). When the hydraulic cylinder (45) rotates, the residue at the welding position is scraped off by the scraper (29) and falls into the collection box (3) through the chip removal groove (32) and the rectangular groove (38), thereby completing the collection of the residue; S7: After welding is completed, wait for the weld to cool and solidify, remove the hook (42), release the handle (14) and the rotating ring (8), carefully remove the welded hydraulic cylinder (45) from the fixing seat (2), clean the work area, and check whether the components of the device are damaged or need maintenance.

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