Automatic rotary welding device for hydraulic oil cylinder parts

Abstract

The invention relates to an automatic rotary welding device for hydraulic oil cylinder parts, and relates to the technical field of hydraulic oil cylinder welding, the automatic rotary welding device comprises a workbench, a rotating disc, a fixing assembly and a welding gun, the welding gun is fixedly connected to the upper end face of the workbench, and a mounting plate is arranged above the workbench; the rotating disc is located above the mounting plate and rotationally connected with the mounting plate along the vertical axis, the lower end face of the mounting plate is fixedly connected with a rotating motor used for rotating the rotating disc, and the fixing assembly is fixedly arranged on the upper end face of the mounting plate and used for fixing two hydraulic cylinder parts needing to be welded at the same time. The welding device has the effect of improving the welding quality and efficiency.

Description

Technical Field

[0001] This application relates to the field of hydraulic cylinder welding technology, and in particular to an automatic rotary welding device for hydraulic cylinder components. Background Technology

[0002] In the field of machinery manufacturing, hydraulic cylinders, as important power actuators, are widely used in various engineering machinery equipment, industrial automated production lines, and many other scenarios. With the continuous development of industry, the requirements for the quality and production efficiency of hydraulic cylinders are becoming increasingly stringent. The manufacturing of hydraulic cylinders involves the assembly and welding of multiple components, among which the welding quality of the outer cylinder directly affects the performance and service life of the entire hydraulic cylinder. Efficient and precise welding technology is crucial for improving the production quality and efficiency of hydraulic cylinders. Good welding processes and equipment can reduce welding defects, improve the strength and sealing of welds, thereby ensuring the stable operation of hydraulic cylinders under high-pressure, high-frequency working environments and providing reliable power support for industrial production.

[0003] Traditional welding of hydraulic cylinder components relies primarily on manual operation. Workers use welding torches and perform welding operations based on experience and skill. For welding the outer cylinder barrel, such as the butt welds between the cylinder barrel and cylinder head, the cylinder barrel and cylinder bottom end faces, and the intersecting welds between the cylinder barrel and the oil port connector, workers need to visually determine the welding position and parameters. This method is quite difficult when dealing with some complex weld shapes. Additionally, some companies use simple tooling fixtures to assist welding, fixing the position of the components, but this still requires constant manual adjustment of the welding angle and speed during the welding process, making it difficult to achieve a high degree of automation and precise control. Furthermore, some companies use semi-automatic welding equipment. While this equipment can reduce the labor intensity of workers to some extent, it still cannot completely eliminate manual intervention and has limitations in welding accuracy and stability.

[0004] Existing welding technologies for hydraulic cylinder components have many shortcomings. Manual welding is not only labor-intensive and inefficient, but also suffers from inconsistent weld quality due to human factors, easily leading to uneven welds and defects. While simple tooling and semi-automatic welding equipment have improved upon these methods, they still cannot adequately meet the demands of modern industry for high-quality, high-efficiency welding. Particularly when dealing with hydraulic cylinder components of varying diameters, lengths, and thicknesses, the difficulty in flexibly adjusting welding positions and fixing methods results in poor weld adaptability and prevents automated rotary welding, severely restricting the production quality and efficiency of hydraulic cylinders. Summary of the Invention

[0005] To improve welding quality and efficiency, this application provides an automatic rotary welding device for hydraulic cylinder components.

[0006] This application provides an automatic rotary welding device for hydraulic cylinder components, which adopts the following technical solution: An automatic rotary welding device for hydraulic cylinder components includes a worktable, a rotating disk, a fixing component, and a welding torch. The welding torch is fixedly connected to the upper surface of the worktable. A mounting plate is provided above the worktable. The rotating disk is located above the mounting plate and is rotatably connected to the mounting plate along a vertical axis. A rotary motor for rotating the rotating disk is fixedly connected to the lower surface of the mounting plate. The fixing component is fixedly mounted on the upper surface of the mounting plate and is used to simultaneously fix two hydraulic cylinder components that need to be welded.

[0007] By adopting the above technical solution, the workbench is set as the supporting foundation of the entire device, ensuring the stability of the device. The rotating disk can be rotatably connected to the mounting plate along the vertical axis and is driven by a rotating motor on the lower end of the mounting plate, which can drive the hydraulic cylinder parts to be welded to rotate, facilitating circumferential welding and improving the uniformity and efficiency of welding. The mounting plate provides the installation position for the rotating disk and the fixing component. The fixing component is fixed on the upper end of the mounting plate and can fix two hydraulic cylinder parts to be welded at the same time, ensuring that the relative position of the parts is fixed during the welding process, avoiding the degradation of welding quality due to shaking, and enabling the welding work to be completed accurately and efficiently.

[0008] Optionally, the fixing assembly includes two symmetrically arranged first fixing cylinders and two symmetrically arranged second fixing cylinders. The extension axes of the first fixing cylinders and the second fixing cylinders extend along the horizontal plane and are perpendicular to each other. The extension ends of the first fixing cylinders and the second fixing cylinders are rotatably connected to abutment rollers. The abutment rollers rotate along their own vertical axes, and the lower end face of the abutment rollers is below the upper end face of the rotating disk. The nozzle of the welding gun is located between any of the first fixing cylinders and the second fixing cylinders.

[0009] By adopting the above technical solution, two first fixed cylinders and two second fixed cylinders can fix hydraulic cylinder components of different diameters or lengths to meet the welding requirements of cylinders of different specifications; the abutment rollers rotatably connected to the telescopic ends of the first fixed cylinders and the second fixed cylinders rotate along their own vertical axis and their lower end faces are below the upper end face of the rotating disk, which can not only clamp and fix the hydraulic cylinder, but also simultaneously clamp the top or bottom cover of the cylinder placed on the rotating disk; the welding torch nozzle is located between any of the first fixed cylinders and the second fixed cylinder, which facilitates welding of the parts to be welded on the rotating disk.

[0010] Optionally, the mounting plate is rotatably connected to a rotating cylinder along the axis of the rotating disk. The lower end of the rotating cylinder passes through the mounting plate and is coaxially fixedly connected to a worm gear. The worm gear meshes with a worm. The worm is rotatably connected to the mounting plate along its own axis. The output end of the rotating motor is fixedly connected to one end of the worm. A rod is coaxially fixedly provided at the lower end of the rotating disk. The lower end of the rod is inserted into the rod cylinder. A protrusion is fixedly provided on the outer wall of the rod along its own axis. A groove is provided on the inner wall of the rotating cylinder along its own axis.

[0011] By adopting the above technical solution, the rotating motor can drive the worm gear to rotate, which in turn drives the worm wheel and the rotating drum to rotate. Then, by utilizing the limiting effect of the protrusion and groove, the rotating drum drives the insertion rod to rotate, and finally realizes the rotating disc to rotate and connect with the mounting plate along its own vertical axis, thus meeting the requirements of automatic rotary welding.

[0012] Optionally, a mounting bracket is fixedly provided on the lower end face of the mounting plate, and a lifting cylinder is fixedly provided on the lower end face of the mounting bracket. The telescopic end of the lifting cylinder extends into the cylinder and abuts against the lower end face of the insertion rod. The worktable is provided with a through groove for avoiding the lifting cylinder.

[0013] By adopting the above technical solution, the height of the rotating disc can be adjusted, which can meet the welding requirements between the workpieces of different thicknesses and the cylinder. Moreover, the through slot opened on the worktable avoids obstructing the movement of the lifting cylinder.

[0014] Optionally, the mounting plate is slidably connected to the worktable in the horizontal direction.

[0015] By adopting the above technical solution, the device can be adapted to the welding needs of cylinders with different diameters.

[0016] Optionally, a first bracket is fixedly provided on the upper surface of the mounting plate, and a first positioning cylinder that extends and retracts in the vertical direction is fixedly provided on the first bracket. A lifting block is fixedly provided on the extension end of the first positioning cylinder, and a first positioning component is rotatably connected to the lower end of the lifting block. The first positioning component is coaxially arranged with the rotating disc.

[0017] By adopting the above technical solution, the first positioning cylinder can drive the first positioning component to move in the vertical direction, extend the first positioning component into the cylinder barrel, and use the conical surface of the first positioning component to abut against the cylinder barrel to achieve the centering and positioning of the cylinder barrel. It can also press the cylinder barrel against the cylinder head or the cylinder barrel against the cylinder bottom, which facilitates subsequent welding operations.

[0018] Optionally, a second bracket is fixedly provided on the upper surface of the mounting plate, a support rod is provided on the upper surface of the second bracket, a second positioning cylinder that extends and retracts in the vertical direction is fixedly provided on the upper surface of the support rod, and a second positioning element is fixedly provided on the extending end of the second positioning cylinder that passes downward through the support rod.

[0019] By adopting the above technical solution, a second bracket, a support rod, a second positioning cylinder, and a second positioning component are provided on the upper surface of the mounting plate. When welding the oil port pipe joint in the cylinder, it can cooperate with the first positioning component to position and fix the oil inlet and outlet of the cylinder, which facilitates the subsequent welding of the oil port pipe joint.

[0020] Optionally, a limiting frame is fixedly provided at the upper end of the second bracket, a support rod passes through the limiting frame, a rack is fixedly provided on a vertical side of the support rod parallel to the axis of the first fixed cylinder, a drive motor is fixedly provided on the second bracket, a gear that meshes with the rack is fixedly provided through the telescopic end of the drive motor passing through the second bracket, and a notch is provided in the limiting frame to avoid the gear and rack.

[0021] By adopting the above technical solution, the drive motor drives the gear to rotate, which in turn drives the rack and support rod that mesh with the gear to slide along the limit frame, thereby realizing the sliding of the second positioning component, which can adapt to the welding requirements of hydraulic cylinders of different lengths.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Setting up a workbench as the supporting foundation for the entire device ensures its stability; the rotating disc can be rotatably connected to the mounting plate along the vertical axis and is driven by a rotating motor on the lower end of the mounting plate, which can drive the hydraulic cylinder components to be welded to rotate, facilitating circumferential welding and improving the uniformity and efficiency of welding; the mounting plate provides the mounting position for the rotating disc and the fixing components; the fixing components are fixed on the upper end of the mounting plate and can simultaneously fix two hydraulic cylinder components to be welded, ensuring that the relative positions of the components are fixed during the welding process, avoiding a decrease in welding quality due to shaking, and enabling the welding work to be completed accurately and efficiently; 2. Two first fixed cylinders and two second fixed cylinders can fix hydraulic cylinder components of different diameters or lengths to meet the welding requirements of cylinders of different specifications; the abutment rollers rotatably connected to the telescopic ends of the first and second fixed cylinders rotate along their own vertical axis and their lower end faces are below the upper end face of the rotating disk, which can not only clamp and fix the hydraulic cylinder, but also simultaneously clamp the top or bottom cover of the cylinder placed on the rotating disk; the welding torch nozzle is located between any of the first and second fixed cylinders, which facilitates welding of the parts to be welded on the rotating disk; 3. The rotating motor can drive the worm gear to rotate, which in turn drives the worm wheel and the rotating drum to rotate. Then, by using the limiting effect of the protrusion and groove, the rotating drum drives the insertion rod to rotate, and finally realizes the rotating disc to rotate and connect with the mounting plate along its own vertical axis, which meets the needs of automatic rotary welding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an automatic rotary welding device for hydraulic cylinder components.

[0024] Figure 2 This is a schematic diagram of the sliding structure of the mounting plate and the rotating structure of the rotating disk.

[0025] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0026] Figure 4 yes Figure 1 Enlarged schematic diagram of part B.

[0027] Explanation of reference numerals in the attached drawings: 1. Workbench; 11. Through slot; 2. Rotating disc; 21. Insert rod; 22. Protrusion; 3. Fixing assembly; 31. First fixing cylinder; 32. Second fixing cylinder; 33. Abutting roller; 4. Welding torch; 5. Mounting plate; 51. Rotating motor; 52. Rotary drum; 521. Worm gear; 53. Mounting bracket; 531. Worm; 532. Lifting cylinder; 54. First bracket; 541. First positioning cylinder; 542. Lifting block; 543. First positioning component; 55. Second bracket; 551. Limit frame; 552. Drive motor; 553. Gear; 56. Support rod; 561. Second positioning cylinder; 562. Second positioning component; 563. Rack. Detailed Implementation

[0028] The present application will be further described in detail below with reference to all the accompanying drawings.

[0029] This application discloses an automatic rotary welding device for hydraulic cylinder components.

[0030] Reference Figure 1 An automatic rotary welding device for hydraulic cylinder components includes a worktable 1, a rotating disc 2, a fixed component 3, and a welding torch 4.

[0031] Reference Figure 1 and Figure 2 A mounting plate 5 is provided above the workbench 1, and the mounting plate 5 is slidably connected to the workbench 1 in the horizontal direction. A lead screw is rotatably connected to one side of the upper end face of the workbench 1, and a guide rod is fixedly provided on the other side. A sliding motor is coaxially fixedly connected to one end of the lead screw. Two sliders are fixedly provided on the lower end face of the mounting plate 5. One slider is threadedly connected to the lead screw, and the other slider is slidably connected to the guide rod. This is suitable for welding cylinders of different diameters.

[0032] Reference Figure 2 and Figure 3The mounting plate 5 has a through hole, into which a rotating cylinder 52 is inserted. The rotating cylinder 52 is rotatably connected to the mounting plate 5 along its own axis. The upper end of the rotating cylinder 52 is not higher than the upper surface of the mounting plate 5, and the lower end of the rotating cylinder 52 passes through the mounting plate 5. A mounting bracket 53 is fixedly mounted on the lower surface of the mounting plate 5. A worm gear 521 is coaxially fixedly connected to the outer wall of the rotating cylinder 52. The worm gear 521 is located below the mounting plate 5. The worm gear 521 meshes with a worm 531. Both ends of the worm 531 are inserted into the mounting bracket 53. The worm 531 is rotatably connected to the mounting plate 5 along its own axis. A rotating motor 51 is fixedly connected to the lower surface of the mounting plate 5. The output end of the rotating motor 51 is fixedly connected to one end of the worm 531. A rotating disc 2 is located above the mounting plate 5. A rod 21 is coaxially fixedly mounted on the lower end of the rotating disc 2. The lower end of the rod 21 is inserted into the insert cylinder. A protrusion 22 is fixedly mounted on the outer wall of the rod 21 along its own axis. A groove is formed on the inner wall of the rotating cylinder 52 along its own axis. The rotating motor 51 drives the worm gear 531 to rotate, which in turn drives the worm wheel 521 and the cylinder to rotate. Through the limiting action of the protrusion 22 and the groove, the cylinder drives the insertion rod 21 to rotate, thereby realizing the rotating disk 2 to rotate and connect with the mounting plate 5 along its own vertical axis. The rotating disk 2 of the appropriate size can be replaced according to the outer diameter of the cylinder. The outer diameter of the rotating disk 2 is not greater than the outer diameter of the cylinder. At the same time, depending on the placement position of the cylinder, the rotating disk 2 with a support base can be replaced. The support base is fixedly connected to the upper end face of the rotating disk 2. The support base has an arc-shaped groove with the axis set horizontally. The circumference of the arc-shaped groove is less than half a circle. The cylinder can be placed horizontally from top to bottom in the arc-shaped groove. The size of the arc-shaped groove can also be changed according to the outer diameter of the cylinder. During placement and rotation, there is a possibility of detachment from the upper end face of the rotating disk 2.

[0033] Reference Figure 1 and Figure 2 A lifting cylinder 532 is fixedly installed on the lower end face of the mounting bracket 53. The telescopic end of the lifting cylinder 532 extends into the cylinder and abuts against the lower end face of the insert rod 21. The worktable 1 is provided with a through groove 11 to avoid the lifting cylinder 532, which can be used to meet the welding needs between the workpiece to be welded and the cylinder of different thicknesses.

[0034] Reference Figure 1 The fixing component 3 is fixed to the upper surface of the mounting plate 5. The fixing component 3 is used to simultaneously fix two hydraulic cylinder components that need to be welded. The fixing component 3 includes two symmetrically arranged first fixing cylinders 31 and two symmetrically arranged second fixing cylinders 32. The extension axes of the first fixing cylinders 31 and the second fixing cylinders 32 extend horizontally and are perpendicular to each other. The first fixing cylinders 31 and the second fixing cylinders 32 are staggered. The two first fixing cylinders 31 are used to clamp and fix the outer wall of the hydraulic cylinder barrel, and the two second fixing cylinders 32 are used to clamp and fix the outer wall or both ends of the hydraulic cylinder to accommodate the welding requirements of cylinder barrels with different diameters or lengths.

[0035] Reference Figure 1 Both the first fixed cylinder 31 and the second fixed cylinder 32 are rotatably connected to the extension and retraction ends of the cylinder. The abutment roller 33 rotates along its own vertical axis, and the lower end face of the abutment roller 33 is below the upper end face of the rotating disk 2. In this way, it can clamp and fix the hydraulic cylinder, and also clamp the top or bottom cover of the cylinder placed on the rotating disk 2.

[0036] Reference Figure 1 A fixed frame is fixedly provided on the upper surface of the workbench 1. The welding gun 4 is fixedly connected to the fixed frame. The nozzle of the welding gun 4 is located above the outer side of the rotating disk 2 and is located between any of the first fixed cylinder 31 and the second fixed cylinder 32. It is used to weld the workpiece to be welded on the rotating disk 2. The end of the welding gun 4 away from the nozzle is connected to the welding machine.

[0037] Reference Figure 1 A first bracket 54 is fixedly mounted on the upper surface of the mounting plate 5. A first positioning cylinder 541, which extends and retracts vertically, is fixedly mounted on the first bracket 54. A lifting block 542 is fixedly mounted on the extension end of the first positioning cylinder 541. A first positioning component 543 is rotatably connected to the lower end of the lifting block 542. The first positioning component 543 is coaxially arranged with the rotating disk 2. The first positioning component 543 can be a truncated cone. The first positioning cylinder 541 extends downward, inserting the pointed end of the truncated cone into the cylinder to center and position the cylinder, while simultaneously pressing the cylinder downward. A round rod is fixedly mounted on the upper end of the first positioning component 543. A circular piece with a diameter larger than the round rod is fixedly mounted on the end of the round rod away from the first positioning component 543. The round rod and the circular piece are embedded in the lifting block 542. After the first positioning component 543 and the rotating disk 2 clamp the two parts to be welded in the middle, the first positioning component 543 can be rotatably connected to the lifting block 542 along its own axis when the rotating disk 2 rotates.

[0038] Reference Figure 1 and Figure 4 A second bracket 55 is fixedly mounted on the upper surface of the mounting plate 5. A support rod 56 is provided on the upper surface of the second bracket 55. A second positioning cylinder 561 that extends and retracts vertically is fixedly mounted on the upper surface of the support rod 56. The extension end of the second positioning cylinder 561 passes downward through the support rod 56 and is fixedly mounted with a second positioning element 562. The second positioning element 562 can also be a frustum structure. When welding the oil port pipe joint to the cylinder, the first positioning element 543 is used to position the oil inlet and outlet. The second positioning element 562 is positioned and fixed by the second positioning cylinder 561 to another oil inlet and outlet. Then, the first positioning element 543 is raised, and the oil port pipe joint to be welded is placed at the oil inlet and outlet. The first positioning element 543 is lowered and extends into the oil port pipe joint for positioning and fixing. The second positioning cylinder 561 is raised.

[0039] Reference Figure 1 and Figure 4A limiting frame 551 is fixedly mounted on the upper end of the second bracket 55. A support rod 56 passes through the limiting frame 551. A rack 563 is fixedly mounted on a vertical side of the support rod 56 parallel to the axis of the first fixed cylinder 31. A drive motor 552 is fixedly mounted on the second bracket 55. A gear 553 that meshes with the rack 563 is fixedly mounted on the telescopic end of the drive motor 552 through the second bracket 55. The limiting frame 551 has a notch to avoid the gear 553 and the rack 563. The drive motor 552 drives the gear 553 to rotate, thereby causing the rack 563 and the support rod 56 to slide, realizing the sliding of the second positioning component 562 to adapt to the welding requirements of hydraulic cylinders of different lengths.

[0040] The present invention also proposes a method for using an automatic rotary welding device for hydraulic cylinder components, the method being as follows: before welding, the arrangement of the cylinder barrel is determined according to the welding position, the welding position includes the butt ring weld between the cylinder barrel and the cylinder head, the butt ring weld between the cylinder barrel and the bottom end face of the cylinder, and the intersecting line weld between the cylinder barrel and the oil port pipe joint.

[0041] When welding the butt ring weld between the cylinder barrel and the cylinder head, or between the cylinder barrel and the cylinder bottom end face, firstly, place the cylinder head or cylinder bottom on the rotating disk 2. The outer diameter of the part of the cylinder head or cylinder bottom that is in contact with the rotating disk 2 is larger than the outer diameter of the rotating disk 2. Four abutment rollers 33 clamp the outer wall of the part of the cylinder head or cylinder body that is in contact with the rotating disk 2 from four directions. Then, place the cylinder barrel above the cylinder head or cylinder body. The first positioning cylinder 541 drives the first positioning member 543 to extend into the cylinder barrel. The conical surface of the first positioning member 543 abuts against the cylinder barrel, aligning the cylinder barrel and pressing the cylinder barrel with the cylinder head or cylinder body. Adjust the height of the rotating disk 2 by the lifting cylinder 532 and adjust the horizontal position of the cylinder barrel by the moving mounting plate 5. Then, rotate the motor 51 to drive the rotating disk 2 to rotate, and the welding torch 4 welds the butt ring weld between the cylinder barrel and the cylinder head or between the cylinder barrel and the cylinder bottom end face.

[0042] When welding the intersecting weld between the cylinder barrel and the oil port joint, there are two oil ports on the cylinder barrel, namely the first oil port and the second oil port, which need to be welded with the first oil port pipe and the second oil port pipe respectively. First, place the cylinder barrel on the rotating disk 2 along the horizontal axis and initially adjust the position of the cylinder barrel. The first positioning cylinder 541 drives the first positioning part 543 to insert into the first oil port to position the cylinder barrel welding position. By driving the support rod 56 to slide through the single drive, the second positioning part 562 is moved above the second oil port. The second positioning cylinder 561 inserts the second positioning part 562 into the second oil port, so that the cylinder barrel axis is parallel to the axis of the first fixed cylinder 31. The two first fixed cylinders 31 drive the corresponding abutting rollers 33 to abut against the two ends of the cylinder barrel, and the two second fixed cylinders 32 drive the corresponding abutting rollers 33 to abut against the cylinder barrel. The outer wall restricts the cylinder's rotation, and the cylinder's axis is located between the two ends of the abutment roller 33; the first positioning member 543 and the second positioning member 562 rise upwards and separate from the cylinder, placing the first oil port pipe on the first oil port, and the first positioning member 543 centers and presses the first oil port pipe at the first oil port; the four abutment rollers 33 move away from the cylinder, and the height of the rotating disc 2 is adjusted by the lifting cylinder 532, and the horizontal position of the cylinder is adjusted by the moving mounting plate 5, so that the nozzle of the welding torch 4 is directly facing the intersection line between the cylinder and the first oil port pipe joint, and the welding torch 4 begins welding. First, spot welding is used to initially fix the cylinder and the first oil port pipe, and then the rotating disc 2 is used to complete the welding. After the rotating disc 2 rotates one revolution and the first oil port pipe is welded, the rotating disc 2 continues to rotate half a revolution. The two second positioning cylinders 561 drive the corresponding abutting rollers 33 to abut against the outer wall of the cylinder. The first positioning component 543 disengages from the first oil port pipe. The two first positioning cylinders 541 drive the corresponding abutting rollers 33 to abut against both ends of the cylinder. At the same time, the first positioning cylinder 541 near the first oil port pipe retracts, and the first positioning cylinder 541 away from the first oil port pipe extends, so that the second oil port is directly below the positioning component. The welding steps of the second oil port pipe and the cylinder are the same as above. The difference is that the second positioning component 562 is inserted into the first oil port pipe, and the first positioning component 543 is inserted into the second oil port and the second oil port pipe.

[0043] The implementation principle of the automatic rotary welding device for hydraulic cylinder components in this application embodiment is as follows: a workbench 1 is set as the supporting foundation for the entire device, which can ensure the stability of the device; the rotating disk 2 can be rotatably connected to the mounting plate 5 along the vertical axis and is driven by the rotating motor 51 on the lower end face of the mounting plate 5, which can drive the hydraulic cylinder components to be welded to rotate, which facilitates circumferential welding and improves the uniformity and efficiency of welding; the mounting plate 5 provides the installation position for the rotating disk 2 and the fixing component 3; the fixing component 3 is fixed on the upper end face of the mounting plate 5, which can simultaneously fix two hydraulic cylinder components to be welded, ensuring that the relative position of the components is fixed during the welding process, avoiding the decline in welding quality due to shaking, so that the welding work can be completed accurately and efficiently.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic rotary welding device for hydraulic cylinder components, characterized in that: The assembly includes a workbench (1), a rotating disc (2), a fixing component (3), and a welding torch (4). The welding torch (4) is fixedly connected to the upper surface of the workbench (1). A mounting plate (5) is provided above the workbench (1). The rotating disc (2) is located above the mounting plate (5) and is rotatably connected to the mounting plate (5) along the vertical axis. A rotating motor (51) for rotating the rotating disc (2) is fixedly connected to the lower surface of the mounting plate (5). The fixing component (3) is fixedly mounted on the upper surface of the mounting plate (5). The fixing component (3) is used to simultaneously fix two hydraulic cylinder components that need to be welded.

2. The automatic rotary welding device for hydraulic cylinder components according to claim 1, characterized in that: The fixing component (3) includes two symmetrically arranged first fixing cylinders (31) and two symmetrically arranged second fixing cylinders (32). The telescopic axes of the first fixing cylinders (31) and the second fixing cylinders (32) extend along the horizontal plane and are perpendicular to each other. The telescopic ends of the first fixing cylinders (31) and the second fixing cylinders (32) are rotatably connected to abutting rollers (33). The abutting rollers (33) rotate along their own vertical axis. The lower end face of the abutting rollers (33) is below the upper end face of the rotating disk (2). The nozzle of the welding gun (4) is located between any of the first fixing cylinders (31) and the second fixing cylinders (32).

3. The automatic rotary welding device for hydraulic cylinder components according to claim 1, characterized in that: The mounting plate (5) is rotatably connected to a rotating cylinder (52) along the axis of the rotating disk (2). The lower end of the rotating cylinder (52) passes through the mounting plate (5) and is coaxially fixedly connected to a worm gear (521). The worm gear (521) meshes with a worm (531). The worm (531) is rotatably connected to the mounting plate (5) along its own axis. The output end of the rotating motor (51) is fixedly connected to one end of the worm (531). The lower end of the rotating disk (2) is coaxially fixedly provided with an insert rod (21). The lower end of the insert rod (21) is inserted into the insert cylinder. The outer wall of the insert rod (21) is fixedly provided with a protrusion (22) along its own axis. The inner wall of the rotating cylinder (52) is provided with a groove along its own axis.

4. The automatic rotary welding device for hydraulic cylinder components according to claim 3, characterized in that: The mounting plate (5) is fixed with a mounting bracket (53) on the lower end face, and a lifting cylinder (532) is fixed with the lower end face of the mounting bracket (53). The extension end of the lifting cylinder (532) extends into the cylinder and abuts against the lower end face of the insert rod (21). The workbench (1) is provided with a through groove (11) for avoiding the lifting cylinder (532).

5. The automatic rotary welding device for hydraulic cylinder components according to claim 1, characterized in that: The mounting plate (5) is slidably connected to the workbench (1) in the horizontal direction.

6. The automatic rotary welding device for hydraulic cylinder components according to claim 1, characterized in that: The upper surface of the mounting plate (5) is fixedly provided with a first bracket (54), the first bracket (54) is fixedly provided with a first positioning cylinder (541) that extends and retracts in the vertical direction, the extension end of the first positioning cylinder (541) is fixedly provided with a lifting block (542), the lower end of the lifting block (542) is rotatably connected with a first positioning component (543), and the first positioning component (543) is coaxially arranged with the rotating disc (2).

7. The automatic rotary welding device for hydraulic cylinder components according to claim 1, characterized in that: The upper end of the mounting plate (5) is fixedly provided with a second bracket (55), the upper end of the second bracket (55) is provided with a support rod (56), the upper end of the support rod (56) is fixedly provided with a second positioning cylinder (561) that extends and retracts in the vertical direction, and the extension end of the second positioning cylinder (561) passes downward through the support rod (56) and is fixedly provided with a second positioning component (562).

8. The automatic rotary welding device for hydraulic cylinder components according to claim 7, characterized in that: The second bracket (55) is fixed with a limiting frame (551) at its upper end. The support rod (56) passes through the limiting frame (551). A rack (563) is fixed on a vertical side of the support rod (56) parallel to the axis of the first fixed cylinder (31). The second bracket (55) is fixed with a drive motor (552). The telescopic end of the drive motor (552) passes through the second bracket (55) and is fixed with a gear (553) that meshes with the rack (563). The limiting frame (551) has a notch for avoiding the gear (553) and the rack (563).

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