Hydraulic cylinder body weld joint welding device

Abstract

The invention discloses a hydraulic cylinder body weld joint welding device, and relates to the technical field of hydraulic cylinder production, the hydraulic cylinder body weld joint welding device comprises a base, a first supporting plate is fixedly installed on the base, the fixing device further comprises an ejector rod, the ejector rod is fixedly installed on the side face of the output end of a first electric telescopic rod, and a first disc is rotatably installed on the side face of the ejector rod; an L-shaped rod is fixedly installed on the circumferential face of the first rotating piece, a second rotating piece is fixedly installed at the end, away from the first rotating piece, of the L-shaped rod, a sliding block is fixedly installed on the side face of the second rotating piece, a fixing plate is fixedly installed on the side face of the sliding block, and a second electric telescopic rod is fixedly installed on the side face of the fixing plate. The rotating shaft drives the first cylinders to move, distance control over the left cylinder and the right cylinder is achieved, mechanical fixing of the cylinder body is achieved through the four-direction roller clamping mechanism driven by the electric telescopic rod, it can be guaranteed that clamping force is evenly distributed, and local deformation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinder production, in particular to a hydraulic cylinder body weld seam welding device. Background Art

[0002] Hydraulic cylinders, as the core actuators of hydraulic transmission systems, are widely used in engineering machinery (such as excavators and loaders), metallurgical equipment, shipbuilding, aerospace, and military equipment. Their performance directly impacts the reliability, sealing, and service life of the entire hydraulic system. As a key component of hydraulic cylinders, the quality of the cylinder body's welding is particularly important.

[0003] The patent with patent announcement number CN221935796U relates to the field of hydraulic cylinder production technology, specifically a hydraulic cylinder body weld welding device, including a base, a support mechanism fixedly connected to the top of the base, a fixing mechanism installed on the side of the support mechanism, and a welding mechanism installed on the surface of the base; the support mechanism includes support legs fixedly connected to the base, a rotating frame inserted above the support legs, a rotating rod sleeved on the inside of the rotating frame, one end of the rotating rod movably connected to a reduction motor, and a connecting rod installed on one side of the rotating frame. The improved weld welding device clamps and fixes the hydraulic cylinder body to be welded through the fixing mechanism. During welding, the hydraulic cylinder body and the fixing mechanism rotate slowly synchronously, and the welding effect is better.

[0004] The above patent flexibly adjusts the distance between the upper arc plate and the lower arc plate by rotating the threaded rod, and can be flexibly adjusted according to hydraulic cylinder bodies of different sizes. It can clamp and fix hydraulic cylinder bodies of various specifications, and has stronger adaptability. In actual applications, although the device can fix the cylinder body circumference, it lacks a limiting structure at the front and rear ends of the cylinder body. When the cylinder body is rotated for welding, displacement may occur due to axial unfixation, affecting the welding accuracy. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a hydraulic cylinder body weld seam welding device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hydraulic cylinder body weld welding device, comprising a base, a support plate 1 is fixedly mounted on the base, an electric telescopic rod 1 is installed through the side of the support plate 1, a support plate 2 is fixedly mounted on the base, and further comprising a fixing device, a scraping device and an automatic unloading device; Wherein, the fixing device also includes a push rod, which is fixedly mounted on the side of the output end of the electric telescopic rod, a disc is rotatably mounted on the side of the push rod, a cross plate is fixedly mounted under the support plate, a gear is rotatably mounted on the side of the cross plate, a rotating part is rotatably mounted on the side of the gear, an L-shaped rod is fixedly mounted on the circumferential surface of the rotating part, a rotating part 2 is fixedly mounted on the end of the L-shaped rod away from the rotating part 1, a slider is fixedly mounted on the side of the rotating part 2, a fixed plate is fixedly mounted on the side of the slider, an electric telescopic rod 2 is fixedly mounted on the side of the fixed plate, and the surface of the cross plate is opened A groove is provided, a transmission rod is slidably installed inside the groove, a rotating shaft is rotatably installed on the side of the slider, a cylinder 1 is rotatably installed on the circumferential surface of the rotating shaft, a fixed rod is fixedly installed on the side of the support plate 2, a top plate is fixedly installed on the side of the fixed rod, and a disc 2 is rotatably installed on the side of the top plate. The distance between the cylinders 1 is adjusted by the fixing device, and the electric telescopic rod 2 is started, and the electric telescopic rod 2 begins to retract. The output end of the electric telescopic rod 2 drives the fixed plate to move, and the fixed plate drives the slider to move inside the groove of the cross plate. The slider drives the rotating shaft to move, and the rotating shaft drives the cylinder 1 to move, so as to realize the distance control of the left and right cylinders 1.

[0007] Preferably, the slider slides inside the groove, a through hole is opened on the surface of the gear one, two transmission rods are provided, and are symmetrically distributed up and down with the gear one as the center, the movement of the slider drives the rotating part two to rotate, the rotating part two drives the L-shaped rod to rotate, the L-shaped rod drives the rotating part one to rotate, the rotating part one drives the gear one to rotate, and the gear one drives the transmission rod to move up and down, thereby realizing the up and down distance control of the cylinder one.

[0008] Preferably, there are four sliders, rotating shafts and cylinders, which are respectively arranged with the electric telescopic rod one as the center. After adjusting the distance, the hydraulic cylinder to be welded is placed in the fixing device, and the electric telescopic rod two is started again to clamp the hydraulic cylinder. The rollers clamp it in four directions, which can clamp it tightly and prevent the cylinder body from falling off.

[0009] Preferably, the scraping device also includes a motor, which is fixedly mounted on the side of the transmission rod, and a gear 2 is fixedly mounted on the output end of the motor, and a gear 3 is fixedly mounted on the circumferential surface of the rotating shaft below, and a cylinder 2 is rotatably mounted on the circumferential surface of the rotating shaft below, and a groove is provided on the surface of the cylinder 2, and a scraper is rotatably mounted inside the groove, and the circumferential surface of the hydraulic cylinder is welded against the weld arc. When the motor is started, the motor begins to rotate slowly clockwise, and the output end of the motor drives gear 2 to rotate, gear 2 drives the meshing gear 3 to rotate, gear 3 drives the rotating shaft to rotate, and the rotating shaft drives cylinder 1 to rotate.

[0010] Preferably, gear 2 is meshed with gear 3, and gear 3 is fixedly connected to the side of cylinder 1. The output end of the motor drives gear 2 to rotate, gear 2 drives the meshing gear 3 to rotate, gear 3 drives the rotating shaft to rotate, the rotating shaft drives cylinder 1 to rotate, and the rotating shaft drives cylinder 2 to rotate.

[0011] Preferably, the end of the scraper away from the groove is set as a slope, and a torsion spring is provided between the scraper and the inner wall of the groove. When rotating clockwise, the scraper inside the second cylinder will slide along the cylinder body due to the slope and will not cause any impact. After the hydraulic cylinder is welded, welding slag remains at the weld of the hydraulic cylinder and needs to be removed.

[0012] Preferably, the automatic unloading device also includes a straight rod, which is fixedly mounted on the side of the fixed plate, and a gear four is rotatably mounted under the cross plate, a long block is fixedly mounted under the cross plate, and a U-shaped rod slides through the side of the long block, and a buffer road is rotatably mounted on the side of the support plate two, and a spring is arranged between the buffer road and the support plate two, and the fixed plate drives the straight rod to move, and the straight rod touches gear four during the movement, and the straight rod drives gear four to rotate, and the rotation of gear four drives the U-shaped rod to move, so that the U-shaped rod moves outward when the fixing device is squeezed inward.

[0013] Preferably, the straight rod side is provided with a tooth groove, and the straight rod tooth groove is engaged with gear four. The U-shaped rod side is provided with a tooth groove, and the U-shaped rod tooth groove is engaged with gear four, so that when the fixing device is squeezed inward, the U-shaped rod moves outward, and when the fixing device moves outward, the U-shaped rod moves inward. After the hydraulic cylinder welds and scrapes off the welding slag, the fixing device is stretched outward and the U-shaped rod moves inward.

[0014] Preferably, there are two springs, which are respectively arranged between support plate 1 and the buffer track and between support plate 2 and the buffer track. After the hydraulic cylinder is pushed by the U-shaped rod, it falls from the side and rolls onto the buffer track. The buffer track rotates to stretch the spring, and the spring deformation generates a reaction force. The reaction force causes the buffer track to have a buffering effect on the hydraulic cylinder, and then the hydraulic cylinder rolls onto the base.

[0015] The present invention provides a hydraulic cylinder body weld seam welding device, which has the following beneficial effects: (1) The hydraulic cylinder body weld seam welding device drives the four cylinders to approach each other through an electric telescopic rod, thereby achieving mechanical fixation of the cylinder body. It can ensure uniform distribution of clamping force and avoid local deformation, and reduce surface scratches by rolling contact. The centering design of the front and rear end discs can automatically correct the weld position, effectively solving the problem of welding misalignment. At the same time, the close clamping of the four cylinders can effectively correct the roundness of the partially out-of-round cylinder body, further improving the effect of cylinder body welding.

[0016] (2) The hydraulic cylinder body weld welding device realizes automatic rotation welding of the hydraulic cylinder through the motor-driven gear set and cylinder structure, which not only ensures the uniformity of the weld but also significantly improves the welding accuracy and efficiency. Utilizing the bidirectional rotation function, the friction of the cylinder drives the cylinder body to rotate smoothly during clockwise welding, and the scraper automatically removes the welding slag during counterclockwise rapid rotation. The integrated design reduces manual intervention and labor intensity. In addition, the introduction of the disc structure effectively reduces rotational friction and extends the service life of the equipment, while the design of the cylinder surface that can increase friction further improves the adaptability of the system.

[0017] (3) The hydraulic cylinder body weld welding device realizes the automatic lateral push-out of the high-temperature hydraulic cylinder after welding, completely avoiding the risk of burns caused by manual contact and significantly improving operational safety. Secondly, the pushing action of the U-shaped rod is synchronized with the fixing device, without the need for an additional power source. The structure is compact and the response is fast. The buffer channel and spring design effectively reduce the impact force of the cylinder body falling, preventing damage to the workpiece or noise generation, and ensuring a smooth and reliable unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the top rod structure of the present invention; Figure 3 This is a structural diagram of the gear 1 and the electric telescopic rod 2 of the present invention; Figure 4 This is a schematic structural diagram of the fixing device of the present invention; Figure 5 This is a schematic diagram of the rotating shaft and cylinder structure of the present invention; Figure 6 This is a structural diagram of the automatic unloading device of the present invention; Figure 7 This is a schematic diagram of the cross plate and straight plate structure of the present invention; Figure 8 This is a schematic structural diagram of the scraping device of the present invention; Figure 9 It is a schematic diagram of the overall side structure of the present invention.

[0019] In the figure: 1. Base; 2. Support plate 1; 3. Electric telescopic rod 1; 4. Support plate 2; 5. Push rod; 6. Disc 1; 7. Cross plate; 8. Gear 1; 9. Rotating part 1; 10. L-shaped rod; 11. Rotating part 2; 12. Slider; 13. Fixed plate; 14. Electric telescopic rod 2; 15. Transmission rod; 16. Rotating shaft; 17. Cylinder 1; 18. Fixed rod; 19. Push plate; 20. Disc 2; 21. Motor; 22. Gear 2; 23. Gear 3; 24. Cylinder 2; 25. Scraper; 26. Straight rod; 27. Gear 4; 28. Long block; 29. ​​U-shaped rod; 30. Buffer channel; 31. Spring. DETAILED DESCRIPTION

[0020] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1-9 One embodiment of the present invention is: a hydraulic cylinder body weld welding device, including a base 1, a support plate 2 is fixedly installed on the base 1, an electric telescopic rod 3 is installed through the side of the support plate 2, a support plate 2 4 is fixedly installed on the base 1, and also includes a fixing device, a scraping device and an automatic unloading device.

[0022] The fixing device also includes a top rod 5, which is fixedly mounted on the output end of the electric telescopic rod 3, and a disc 6 is rotatably mounted on the side of the top rod 5. A cross plate 7 is fixedly mounted under the support plate 2, and a gear 8 is rotatably mounted on the side of the cross plate 7. A rotating member 9 is rotatably mounted on the side of the gear 8. An L-shaped rod 10 is fixedly mounted on the circumferential surface of the rotating member 9, and a rotating member 2 11 is fixedly mounted on the end of the L-shaped rod 10 away from the rotating member 9. A slider 12 is fixedly mounted on the side of the rotating member 2 11, and a fixed plate 13 is fixedly mounted on the side of the slider 12. An electric telescopic rod 2 14 is fixedly mounted on the side of the fixed plate 13. A groove is provided on the surface of the cross plate 7, and a transmission rod 15 is slidably mounted inside the groove. The slider 12 is rotatably mounted on the side. Rotate the shaft 16, and the cylinder 17 is rotatably installed on the circumferential surface of the rotating shaft 16. A fixed rod 18 is fixedly installed on the side of the support plate 24, and a top plate 19 is fixedly installed on the side of the fixed rod 18. A disk 20 is rotatably installed on the side of the top plate 19. Start the electric telescopic rod 2 14, and the electric telescopic rod 2 14 begins to shrink. The output end of the electric telescopic rod 2 14 drives the fixed plate 13 to move, and the fixed plate 13 drives the slider 12 to move inside the groove of the cross plate 7. The slider 12 drives the rotating shaft 16 to move, and the rotating shaft 16 drives the cylinder 17 to move, so as to realize the distance control of the left and right cylinders 17. The four-way roller clamping mechanism driven by the electric telescopic rod realizes the mechanical fixation of the cylinder body, which can ensure that the clamping force is evenly distributed and avoid local deformation.

[0023] The slider 12 slides inside the groove, a through hole is opened on the surface of the gear 8, and two transmission rods 15 are provided, which are symmetrically distributed up and down with the gear 8 as the center. The upper and lower transmission rods 15 are brought closer to each other to drive the upper and lower cylinders 17 to approach each other, and rolling contact is used to reduce surface scratches. The centering design of the front and rear end discs can automatically correct the weld position, effectively solving the problem of welding misalignment.

[0024] There are four sliders 12, rotating shafts 16 and cylinders 17, which are clamped by rollers in four directions. They can clamp tightly and prevent the cylinder body from falling off. Combined with the anti-slip roller design, the device significantly improves the stability of welding quality. It is particularly suitable for high-precision hydraulic cylinder welding in mass production, taking into account both positioning accuracy and clamping efficiency.

[0025] When this embodiment is working: before welding, the electric telescopic rod 2 14 is started, the electric telescopic rod 2 14 begins to shrink, the output end of the electric telescopic rod 2 14 drives the fixed plate 13 to move, the fixed plate 13 drives the slider 12 to move inside the groove of the cross plate 7, the slider 12 drives the rotating shaft 16 to move, the rotating shaft 16 drives the cylinder 17 to move, and the distance between the left and right cylinders 17 is controlled. The movement of the slider 12 drives the rotating part 2 11 to rotate, the rotating part 2 11 drives the L-shaped rod 10 to rotate, the L-shaped rod 10 drives the rotating part 19 to rotate, the rotating part 19 drives the gear 8 to rotate, and the gear 8 drives the transmission rod 15 to move up and down to realize the up and down distance control of the cylinder 17. After adjusting the distance, the required distance is set. The welded hydraulic cylinder is placed in the fixing device, and the electric telescopic rod 2 14 is started again to clamp the hydraulic cylinder. It is clamped by the rollers in four directions, which can tightly clamp and prevent the cylinder body from falling off. At the same time, the close clamping of the four cylinders 17 can effectively correct the roundness of the partially out-of-round cylinder body, further improving the effect of cylinder body welding. At this time, the electric telescopic rod 1 3 is started, and the output end of the electric telescopic rod 3 drives the push rod 5 to move, and the push rod 5 drives the disc 1 6 to move. The cylinder body moves forward after being pushed by the disc 1 6, and stops after touching the disc 2 20. The alignment between the welds of the hydraulic cylinders to be welded is achieved by squeezing forward and backward to prevent movement during the welding process, thereby preventing inaccurate welding.

[0026] See also Figures 1-9 On the basis of the above embodiment, in another embodiment of the present invention, the scraping device further comprises a motor 21, which is fixedly mounted on the side of the transmission rod 15, and a gear 22 is fixedly mounted on the output end of the motor 21, and a gear 3 23 is fixedly mounted on the circumferential surface of the lower rotating shaft 16, and a cylinder 24 is rotatably mounted on the circumferential surface of the lower rotating shaft 16, and a groove is provided on the surface of the cylinder 24, and a scraper 25 is rotatably mounted inside the groove. The circumferential surface of the hydraulic cylinder is welded against the weld arc, and the motor 21 is started, and the motor 21 begins to rotate slowly clockwise, and the output end of the motor 21 drives the gear 2 22 to rotate, and the gear 2 22 drives the meshing gear 3 23 to rotate, and the gear 3 23 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the cylinder 17 to rotate, thereby realizing automatic rotary welding of the hydraulic cylinder, which not only ensures the uniformity of the weld, but also significantly improves the welding accuracy and efficiency.

[0027] Gear 2 22 is meshed with gear 3 23, and gear 3 23 is fixedly connected to the side of cylinder 1 17. The output end of motor 21 drives gear 2 22 to rotate, gear 2 22 drives meshing gear 3 23 to rotate, gear 3 23 drives rotating shaft 16 to rotate, rotating shaft 16 drives cylinder 1 17 to rotate, and rotating shaft 16 drives cylinder 2 24 to rotate. By utilizing the bidirectional rotation function, the friction of the cylinder drives the cylinder body to rotate smoothly during clockwise welding, and the scraper 25 automatically removes welding slag during rapid counterclockwise rotation. The integrated design reduces manual intervention and reduces labor intensity.

[0028] The end of the scraper 25 away from the groove is set as a slope, and a torsion spring is provided between the scraper 25 and the inner wall of the groove. When rotating clockwise, the scraper 25 inside the cylinder 24 will slide along the cylinder body due to the slope and will not cause any impact. After the hydraulic cylinder is welded, welding slag remains at the weld of the hydraulic cylinder and needs to be removed. The introduction of the disc structure effectively reduces the rotational friction and extends the service life of the equipment, and the cylinder surface design that can increase friction further improves the adaptability of the system.

[0029] The automatic unloading device also includes a straight rod 26, which is fixedly mounted on the side of the fixed plate 13, and a gear four 27 is rotatably mounted under the cross plate 7. A long block 28 is fixedly mounted under the cross plate 7, and a U-shaped rod 29 slides through the side of the long block 28. A buffer channel 30 is rotatably mounted on the side of the support plate 24, and a spring 31 is arranged between the buffer channel 30 and the support plate 24. The fixed plate 13 drives the straight rod 26 to move, and the straight rod 26 touches the gear four 27 during the movement. The straight rod 26 drives the gear four 27 to rotate, and the gear four 27 rotates to drive the U-shaped rod 29 to move, so that the U-shaped rod 29 moves outward when the fixing device is squeezed inward, thereby avoiding the risk of burns caused by manual contact and significantly improving operational safety.

[0030] The straight rod 26 is provided with a tooth groove on the side, and the teeth of the straight rod 26 are engaged with the gear four 27. The U-shaped rod 29 is provided with a tooth groove on the side, and the tooth groove of the U-shaped rod 29 is engaged with the gear four 27, so that when the fixing device is squeezed inward, the U-shaped rod 29 moves outward, and when the fixing device moves outward, the U-shaped rod 29 moves inward. After the hydraulic cylinder welds and scrapes off the welding slag, the fixing device is stretched outward and the U-shaped rod 29 moves inward. The design of the punchway and the spring 31 effectively reduces the impact force of the cylinder body falling, prevents damage to the workpiece or noise, and ensures a smooth and reliable unloading process.

[0031] There are two springs 31, which are respectively arranged between support plate 1 2 and buffer track 30 and between support plate 2 4 and buffer track 30. After the hydraulic cylinder is pushed by the U-shaped rod 29, it falls from the side and rolls onto the buffer track 30. The buffer track 30 rotates to stretch the spring 31, and the spring 31 deforms to generate a reaction force. The reaction force makes the buffer track 30 have a buffering effect on the hydraulic cylinder, and then the hydraulic cylinder rolls onto the base 1.

[0032] When this embodiment is working: after the hydraulic cylinder is fixed, welding begins. At this time, welding needs to be performed along the circumference of the hydraulic cylinder against the weld arc. The motor 21 is started and the motor 21 begins to rotate slowly clockwise. The output end of the motor 21 drives the gear 2 22 to rotate, the gear 2 22 drives the meshing gear 3 23 to rotate, the gear 3 23 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the cylinder 1 17 to rotate, the rotating shaft 16 drives the cylinder 2 24 to rotate, and the friction between the cylinder 17 and the hydraulic cylinder is used to drive the cylinder body to rotate. When the cylinder body rotates, the disk 1 6 on the side of the push rod 5 and the disk 2 20 on the side of the top plate 19 are driven to rotate. The front and rear friction is reduced by the rotation of the disk 1 6 and the disk 2 20. , other things that increase friction can be added to the surface of cylinder 17 to assist the rotation of the cylinder body. When rotating clockwise, the scraper 25 inside the cylinder 2 24 will slide along the cylinder body due to the slope, and will not cause any impact. After the hydraulic cylinder is welded, there is welding slag remaining at the weld of the hydraulic cylinder that needs to be removed. Start the motor 21 to rotate counterclockwise quickly, and the cylinder 2 24 rotates counterclockwise under the drive of the motor 21. At this time, the scraper 25 inside the counterclockwise rotating cylinder 24 will scrape the surface of the hydraulic cylinder weld due to the slope. The motor 21 drives the cylinder 17 and the cylinder 2 24 to rotate clockwise and counterclockwise, thereby realizing the welding of the hydraulic cylinder weld and the removal of welding slag, which greatly reduces manual operation and improves work efficiency.

[0033] When this embodiment is working: in the automatic unloading device, the hydraulic cylinder that has just completed welding has a high surface temperature of the cylinder body. There is a risk of burns if it is touched manually. In the fixing device, the fixing plate 13 drives the straight rod 26 to move. During the movement of the straight rod 26, it touches the gear 4 27. The straight rod 26 drives the gear 4 27 to rotate. The rotation of the gear 4 27 drives the U-shaped rod 29 to move. When the fixing device is squeezed inward, the U-shaped rod 29 moves outward. When the fixing device moves outward, the U-shaped rod 29 moves inward. After scraping off the welding slag, the fixing device is stretched outward and the U-shaped rod 29 moves inward. After hitting the hydraulic cylinder, it will apply a thrust to the side of the hydraulic cylinder. After receiving the thrust of the U-shaped rod 29, the hydraulic cylinder falls from the side and rolls onto the buffer channel 30. The buffer channel 30 rotates and stretches the spring 31. The spring 31 deforms and generates a reaction force. The reaction force causes the buffer channel 30 to have a buffering effect on the hydraulic cylinder. Then the hydraulic cylinder rolls onto the base 1, completing the entire welding process, avoiding the risk of burns due to manual contact, and improving safety.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder body weld welding device, comprising a base, a support plate 1 fixedly mounted on the base, an electric telescopic rod 1 penetrating the side of the support plate 1, and a support plate 2 fixedly mounted on the base, characterized in that: It also includes a fixing device, a scraping device and an automatic unloading device; The cam is fixedly mounted on the side of the driving member, and the cam is fixedly mounted on the side of the driving member, and the cam is fixedly mounted on the side of the driving member, and the cam is fixedly mounted on the side of the driving member, and the cam is fixedly mounted on the side of the driving member.

2. The cylinder body welding device according to claim 1, characterized in that: The sliding block slides inside the groove, a through hole is opened on the surface of the gear one, and two transmission rods are provided, which are symmetrically distributed up and down with the gear one as the center.

3. The cylinder body welding device according to claim 2, characterized in that: The sliders, the rotating shafts and the cylinders are provided in four numbers and are respectively arranged inside the cross plate grooves with the electric telescopic rod as the center.

4. The cylinder body welding device according to claim 3, characterized in that: The scraping device also includes a motor, which is fixedly mounted on the side of the transmission rod, and a gear 2 is fixedly mounted on the output end of the motor, and a gear 3 is fixedly mounted on the circumferential surface of the rotating shaft below, and a cylinder 2 is rotatably mounted on the circumferential surface of the rotating shaft below. A groove is provided on the surface of the cylinder 2, and a scraper is rotatably mounted inside the groove.

5. The cylinder body welding device according to claim 4, characterized in that: The gear 2 is meshed with the gear 3, and the gear 3 is fixedly connected to the side surface of the cylinder 1.

6. The cylinder body welding device according to claim 5, characterized in that: One end of the scraper away from the groove is arranged as an inclined surface, and a torsion spring is arranged between the scraper and the inner wall of the groove.

7. The cylinder body welding device according to claim 6, characterized in that: The automatic unloading device also includes a straight rod, which is fixedly installed on the side of the fixed plate, a gear four is rotatably installed under the cross plate, a long block is fixedly installed under the cross plate, a U-shaped rod slides through the side of the long block, a buffer road is rotatably installed on the side of the support plate two, and a spring is provided between the buffer road and the support plate two.

8. The cylinder body welding device according to claim 7, characterized in that: The side surface of the straight rod is provided with a tooth groove, and the tooth groove of the straight rod is engaged with the gear four. The side surface of the U-shaped rod is provided with a tooth groove, and the tooth groove of the U-shaped rod is engaged with the gear four.

9. The cylinder body welding device according to claim 8, characterized in that: There are two springs, which are respectively arranged between the first support plate and the buffer track and between the second support plate and the buffer track.

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