A pressure vessel automatic welding device and method thereof

Abstract

The present invention relates to the technical field of pressure vessel welding, and specifically to an automatic assembly welding device for pressure vessels and a method thereof, comprising an installation platform, a transport component and a fixing component, wherein the transport component comprises a displacement member arranged in a movable groove, a conveying member arranged on the installation platform and a lifting member arranged on an inverted U-shaped support plate, the fixing component comprises a lifting plate arranged on the displacement member, a rotating member arranged in the lifting plate, an alignment member arranged on the lifting plate, the alignment member comprises a lower pressure plate arranged on a telescopic rod, an arc-shaped alignment plate arranged on the lower pressure plate and a clamping plate arranged on the lower pressure plate. The present invention arranges the lower pressure plate and the arc-shaped alignment plate so that when the telescopic rod is extended, the arc-shaped alignment plate aligns the two pressure vessels, and the spot welding component fixes the two pressure vessels, so that the two pressure vessels are kept in an aligned and close-fitting state during welding, thereby improving the welding effect and quality.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel welding, and in particular to an automatic assembly welding device and method for a pressure vessel. Background Art

[0002] A pressure vessel is a device designed to store, transport or process gases or liquids, usually with a high pressure inside. They are commonly used in industry to store or process various gases or liquids, such as oxygen, nitrogen, natural gas, oil, chemicals, etc. Pressure vessels usually require two identical cylinders welded together to assemble a pressure vessel.

[0003] Publication number CN113333983B provides an automatic welding device and welding method for pressure vessels, comprising a lifting mechanism for lifting a cylinder segment out of a longitudinal conveying mechanism for the cylinder segment, an automatic grounding device, an internal expansion device, and a back protection device for the cylinder segment welding annular seam; a welding station for butt welding of two cylinder segments is provided in the middle of the longitudinal conveying mechanism for the cylinder segment, a special welding machine is arranged above the welding station, the lifting mechanism is arranged on both sides of the welding station, and a transmission mechanism for circumferential rotation of the cylinder segment is provided on the lifting mechanism; the automatic grounding device comprises a fixed base installed in the middle position of the longitudinal conveying mechanism for the cylinder segment, and the internal expansion device extends into the interior of the cylinder segment to calibrate the cylinder segment.

[0004] When the above-mentioned automatic assembly welding device for pressure vessels is in use, the cylinder sections will be directly lifted by the lifting mechanism after being transported to the welding station, but the two lifted cylinder sections cannot be guaranteed to be aligned. There is a certain misalignment or a large gap error between the two cylinder sections. Directly welding the two cylinder sections will result in poor welding effect. Summary of the invention

[0005] The object of the present invention is to provide an automatic welding device for pressure vessels and a method thereof to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] In one aspect, an automatic welding device for a pressure vessel is provided, comprising:

[0008] An installation platform, wherein an L-shaped support plate and an inverted U-shaped support plate are provided on the installation platform, and a movable groove is provided on the L-shaped support plate;

[0009] A transport assembly, the transport assembly comprising a displacement member disposed in the moving groove, a conveying member disposed on the mounting platform, and a lifting member disposed on the inverted U-shaped support plate;

[0010] The fixing assembly comprises a lifting plate arranged on the displacement member, a rotating member arranged in the lifting plate, an alignment member arranged on the lifting plate, a welding machine arranged on the L-shaped support plate, and a spot welding member arranged on the alignment member. The alignment member comprises a telescopic rod 1 arranged on the lifting plate, a lower pressure plate arranged on the telescopic rod 1, an arc-shaped alignment plate arranged on the lower pressure plate, and a clamping plate arranged on the lower pressure plate. When the conveying member drives the pressure vessel to move and the two pressure vessels are sleeved on the lifting plate, the lifting member moves downward to hook the lifting plate, and the lifting member and the displacement member drive the lifting member to move. The plate lifts the two pressure vessels away from the conveying component, and the telescopic rod enables the lower pressure plate to drive the arc alignment plate to press and fit the inner walls of the two pressure vessels at the same time, so that the two pressure vessels are aligned, and the clamping plate drives the two pressure vessels to fit tightly against each other. After the lower pressure plate fits the arc alignment plate, the spot welding component fixes the two pressure vessels, and the arc alignment plate and the clamping plate release the connected pressure vessels, so that the rotating component extends out of the lifting plate, and at the same time, the lifting component and the displacement component drive the spot-welded pressure vessel to fit the welding machine, so that the rotating component drives the spot-welded pressure vessel to rotate while the welding machine welds the spot-welded pressure vessel.

[0011] Preferably, the conveying member includes a support plate arranged on the mounting platform, a rotating shaft inserted in the support plate, a frustum rotating block arranged on the rotating shaft, a motor arranged on the mounting platform, and a limit plate arranged on the mounting platform.

[0012] Preferably, the motor 1 is used to drive the truncated table rotating block to rotate, so that the truncated table rotating block drives the pressure vessel placed on the truncated table rotating block to move until it touches the limit plate or another pressure vessel.

[0013] Preferably, the displacement member includes a telescopic rod 2 arranged on the bottom wall of the moving groove and a guide rod 1 arranged on the bottom wall of the moving groove, the lifting plate is sleeved on the guide rod 1, and the lifting member includes a telescopic rod 3 arranged in the inverted U-shaped support plate, a limit block arranged on the telescopic rod 3, a rotating plate arranged on the limit block, a slide groove opened on the rotating plate, a slider arranged in the slide groove, a side plate arranged on the limit block, and a rotating telescopic rod with one end arranged on the slider and the other end arranged on the side plate.

[0014] Preferably, the rotating telescopic rod is used to drive the rotating plate to rotate in a vertical or horizontal state, so that the telescopic rod three can drive the rotating plate in the vertical state to pass over the lifting plate and then rotate to a horizontal state to hook the lifting plate, and together with the telescopic rod two, drive the lifting plate to move along the guide rod one. The rotating plate is in a vertical state, so that the rotating plate is driven by the telescopic rod three to move above the lifting plate, thereby avoiding interference with the truncated table rotating block in transporting the pressure vessel.

[0015] Preferably, the alignment member also includes a guide rod 2 passing through the lower pressure plate and arranged on the arc-shaped alignment plate, a return spring sleeved on the guide rod 2, an insertion rod arranged on the lower pressure plate, a return spring 2 sleeved on the insertion rod, a pull block arranged on the guide rod 2, a spot weld opened on the arc-shaped alignment plate, a pull rod with one end arranged on the clamping plate and the other end arranged on the pull block, and a rubber pad arranged on the lower pressure plate.

[0016] Preferably, the telescopic rod pushes the arc alignment plate to fit against the inner wall of the pressure vessel, causing the reset spring to contract, so that the telescopic rod can continue to push the lower pressure plate, so that the arc alignment plate fits tightly against the inner wall of the lower pressure plate, so that the two pressure vessels are aligned, and the pull rod pulls the clamping plate to move horizontally, driving the two pressure vessels to fit tightly, and when the rubber pad fits against the arc alignment plate, the spot welding component extends out of the spot welding port to spot weld and fix the two pressure vessels.

[0017] Preferably, the rotating component includes a rotating groove opened on the lifting plate, an installation box arranged on the lifting plate below the rotating groove, a lifting telescopic rod arranged in the installation box, a rotating box arranged on the lifting telescopic rod, a second motor arranged at the bottom of the rotating box, and a rotating roller arranged in the rotating box.

[0018] Preferably, when the two pressure vessels are fixed by spot welding, the lifting telescopic rod drives the rotating roller to extend out of the rotating groove, so that the rotating roller rotates in contact with the pressure vessel fixed by spot welding, changes the spot welding position or enables the welding machine to weld the two pressure vessels.

[0019] On the other hand, a pressure vessel automatic welding method is also provided, comprising:

[0020] S1: placing two pressure vessels on the truncated table rotating block in sequence, so that the truncated table rotating block drives the first pressure vessel to move until the first pressure vessel is sleeved on the lifting plate and fits the limit plate, and stops, and the second pressure vessel is sleeved on the lifting plate and touches the first pressure vessel, and stops;

[0021] S2: the telescopic rod 3 drives the rotating plate in the vertical state to move, passes over the lifting plate and then rotates to the horizontal state to hook the lifting plate, and together with the telescopic rod 2 drives the lifting plate to move upward along the guide rod 1, lifting the two pressure vessels away from the truncated table rotating block;

[0022] S3: the telescopic rod is extended to push the arc-shaped alignment plate to fit the inner wall of the pressure vessel, so that the two pressure vessels are aligned, and at the same time, the lower pressing plate moves downward so that the pull rod pulls the clamping plate to move horizontally, so that the two pressure vessels are closely attached, and the spot welding component extends out of the spot welding port to spot weld and fix the two pressure vessels;

[0023] S4: the lifting telescopic rod drives the rotating roller to extend out of the rotating groove, and the second motor drives the rotating roller to rotate, so that the rotating roller drives the two pressure vessels fixed by spot welding to rotate, and the position of the spot welding is changed;

[0024] S5: the telescopic rod 2 and the telescopic rod 3 drive the two pressure vessels fixed by spot welding to move upward, so that the two pressure vessels are attached to the welding machine and rotate under the drive of the rotating roller, so that the welding machine welds the two pressure vessels;

[0025] S6: After the telescopic rods 2 and 3 drive the two welded pressure vessels to move down to the truncated table rotating block, the telescopic rod 3 continues to extend, the rotating plate rotates to a vertical state and then moves up, and the truncated table rotating block rotates in the opposite direction to deliver the two welded pressure vessels.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention includes an installation platform, a transportation component and a fixing component. The transportation component includes a displacement component arranged in a movable groove, a conveying component arranged on the installation platform and a lifting component arranged on an inverted U-shaped support plate. The fixing component includes a lifting plate arranged on the displacement component, a rotating component arranged in the lifting plate, and an alignment component arranged on the lifting plate. The alignment component includes a lower pressure plate arranged on a telescopic rod, an arc-shaped alignment plate arranged on the lower pressure plate and a clamping plate arranged on the lower pressure plate. The present invention arranges the lower pressure plate and the arc-shaped alignment plate so that when the telescopic rod is extended, the arc-shaped alignment plate aligns the two pressure vessels, and the clamping plate simultaneously presses the two pressure vessels together, so that the spot welding component fixes the two pressure vessels, so that they are kept in an aligned and close-fitting state during welding, thereby improving the welding effect and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the fixing assembly of the present invention;

[0030] Figure 3 It is a schematic diagram of the axonometric structure of the fixing assembly of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the lifting component of the present invention;

[0032] Figure 5 It is a side view structural schematic diagram of the present invention;

[0033] Figure 6 A schematic diagram of the state of aligning and positioning the pressure vessel of the present invention;

[0034] Figure 7 for Figure 6 Schematic diagram of the structure of the fixed components in.

[0035] In the figure: 1. Installation platform; 2. L-shaped support plate; 3. Inverted U-shaped support plate; 4. Moving groove; 5. Guide rod 1; 6. Telescopic rod 2; 7. Motor 1; 8. Support plate; 9. Round table rotating block; 10. Rotating shaft; 11. Telescopic rod 3; 12. Rotating telescopic rod; 13. Side plate; 14. Limit block; 15. Sliding block; 16. Rotating plate; 17. Sliding groove; 18. Lifting plate; 19. Telescopic rod 1; 20. Arc pair Alignment plate; 21. Lower pressure plate; 22. Second guide rod; 23. Return spring; 24. Second return spring; 25. Insertion rod; 26. Clamping plate; 27. Pull rod; 28. Pull block; 29. ​​Rubber pad; 30. Spot welding component; 31. Installation box; 32. Lifting telescopic rod; 33. Second motor; 34. Rotating roller; 35. Rotating box; 36. Rotating groove; 37. Welding machine; 38. Limiting plate; 100. Pressure vessel. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7 , the present invention provides a technical solution:

[0038] An automatic welding device for a pressure vessel, comprising:

[0039] The mounting platform 1 includes a support leg and a mounting plate arranged on the support leg, the mounting plate is fixedly connected to the support leg by means of bolts or the like, an L-shaped support plate 2 and an inverted U-shaped support plate 3 are arranged on the mounting plate of the mounting platform 1, the L-shaped support plate 2 is fixedly connected to the top surface of the mounting plate of the mounting platform 1 by means of bolts or the like, the inverted U-shaped support plate 3 is fixedly connected to the top surface of the mounting plate of the mounting platform 1 by means of bolts or the like, and a movable groove 4 is arranged on the L-shaped support plate 2, and the movable groove 4 is used to install a displacement component.

[0040] The transport component includes a displacement member arranged in the moving groove 4, a conveying member arranged on the mounting platform 1, and a lifting member arranged on the inverted U-shaped support plate 3. The conveying member includes a support plate 8, a rotating shaft 10, a truncated table rotating block 9, a motor 7, and a limit plate 38. The displacement member includes a telescopic rod 2 6 and a guide rod 5. The lifting member includes a telescopic rod 3 11, a limit block 14, a rotating plate 16, a slide groove 17, a slider 15, a side plate 13, and a rotating telescopic rod 12. The support plate 8 is arranged on the mounting plate of the mounting platform 1. The support plate 8 is fixedly connected to the top surface of the mounting plate of the mounting platform 1 by setting bolts, etc. The rotating shaft 10 is inserted on the support plate 8, and the rotating shaft 10 is rotatably connected to the support plate 8 by setting bearings, etc. The truncated table rotating block 9 is arranged on the rotating shaft 10, and the truncated table rotating block 9 is fixedly connected to the rotating shaft 10 by setting bolts or the like. The motor 17 is arranged on the mounting plate of the mounting platform 1, and the motor 17 is fixedly connected to the top surface of the mounting plate of the mounting platform 1 by setting bolts or the like. The motor 17 is connected to the rotating shaft 10 by setting a sprocket and a chain, so that the motor 17 drives the rotating shaft 10 to rotate, thereby driving the truncated table rotating block 9 to rotate, so that the truncated table rotating block 9 can drive the pressure vessel 100 placed on the truncated table rotating block 9 to move, so that the pressure vessel 100 passes through the opening of the inverted U-shaped support plate 3 and enters the bottom of the L-shaped support plate 2 until it touches the limit plate 38 or another pressure vessel 100. The telescopic rod 26 is arranged on the bottom wall of the movable groove 4, and the telescopic rod 26 is arranged on the bottom wall of the movable groove 4. The rod 2 6 is fixedly connected to the bottom wall of the movable groove 4 by means of bolts, etc., the guide rod 1 5 is arranged on the bottom wall of the movable groove 4, the guide rod 1 5 is fixedly connected to the bottom wall of the movable groove 4 by means of bolts, etc., the telescopic rod 3 11 is arranged in the inverted U-shaped support plate 3, the telescopic rod 3 11 is fixedly connected to the inverted U-shaped support plate 3 by means of bolts, etc., the limit block 14 is arranged on the telescopic rod 3 11, the limit block 14 is fixedly connected to the telescopic rod 3 11 by means of bolts, the rotating plate 16 is arranged on the limit block 14, the rotating plate 16 is rotatably connected to the limit block 14 by means of a rotating shaft, etc., the slide 17 is opened on the rotating plate 16, the slider 15 is arranged in the slide 17, the slider 15 is movably connected to the slide 17, and the slider 15 is provided with a convex plug It is arranged in a groove on the side wall of the slide groove 17 so that the slider 15 will not leave the slide groove 17, and the slider 15 can slide in the slide groove 17. The side plate 13 is arranged on the limit block 14, and the side plate 13 is fixedly connected with the limit block 14 by setting bolts or the like. The limit block 14 rotates one end of the telescopic rod 12 and is arranged on the slider 15. One end of the telescopic rod 12 is rotatably connected with the slider 15 by setting a rotating shaft. The other end of the telescopic rod 12 is arranged on the side plate 13, and the other end of the telescopic rod 12 is rotatably connected with the side plate 13 by setting a rotating shaft or the like. The telescopic rod 12 contracts, which can drive the slider 15 to move in the slide groove 17, so that the telescopic rod 12 pulls the rotating plate 16 to rotate, so that the rotating plate 16 is converted between a vertical state and a horizontal state.

[0041] The fixing assembly includes a lifting plate 18 arranged on the displacement member, a rotating member arranged in the lifting plate 18, an alignment member arranged on the lifting plate 18, a welding machine 37 arranged on the L-shaped support plate 2, and a spot welding member 30 arranged on the alignment member. The alignment member includes a telescopic rod 19, a lower pressure plate 21, an arc-shaped alignment plate 20, a clamping plate 26, a guide rod 22, a reset spring 23, an insertion rod 25, a reset spring 2, a pull block 28, a spot welding port, a pull rod 27 and a rubber pad 29. The rotating member includes a rotating groove 36, an installation box 31, a lifting telescopic rod 32, a rotating box 35, a motor 2 33 and a rotating roller 34. The lifting plate 18 is arranged on the telescopic rod 2 6, and the lifting plate 18 is connected to the telescopic rod 2 by setting bolts and the like. 6 is fixedly connected, the lifting plate 18 is sleeved on the guide plate, the lifting plate 18 is movably connected to the guide rod 15, the telescopic rod 19 is arranged on the bottom wall of the lifting plate 18, the telescopic rod 19 is fixedly connected to the lifting plate 18 by setting bolts, the lower pressing plate 21 is arranged on the telescopic rod 19, the lower pressing plate 21 is fixedly connected to the telescopic rod 19 by setting bolts, etc., the guide rod 22 is inserted on the lower pressing plate 21, the guide rod 22 is movably connected to the lower pressing plate 21, the arc alignment plate 20 is connected to the guide rod 22, the arc alignment plate 20 is fixedly connected to the guide rod 22 by setting bolts, etc., the reset spring 23 is sleeved on the guide rod 22, one end of the reset spring 23 is fixedly connected to the bottom surface of the lower pressing plate 21 by welding, etc., the reset spring The other end of 23 is fixedly connected to the top surface of the arc-shaped alignment plate 20 by welding, one end of the insertion rod 25 is arranged on the lower pressure plate 21, one end of the insertion rod 25 is fixedly connected to the side of the lower pressure plate 21 by welding or bolts, the other end of the insertion rod 25 is inserted into the clamping plate 26, the clamping plate 26 is movably connected to the insertion rod 25, so that the clamping plate 26 can move on the insertion rod 25, the second reset spring is set on the insertion rod 25, one end of the second reset spring is fixedly connected to the lower pressure plate 21 by welding, the other end of the second reset spring is fixedly connected to the clamping plate 26 by welding, the pull block 28 is arranged on the top of the second guide rod 22, the pull block 28 is fixedly connected to the top of the second guide rod 22 by bolts or welding, and one end of the pull rod 27 is fixedly connected to the top of the second guide rod 22. The end is arranged on the pull block 28, one end of the pull rod 27 is rotatably connected to the pull block 28 by setting a rotating shaft, the other end of the pull rod 27 is arranged on the clamping plate 26, and the other end of the pull rod 27 is rotatably connected to the clamping plate 26 by setting a rotating shaft, a spot welding component 30 is arranged on the lower pressing plate 21, and the spot welding component 30 is fixedly connected to the lower pressing plate 21 by setting bolts or the like, and the spot welding component 30 can select a suitable welding machine according to the actual use situation, the spot welding port is opened on the arc alignment plate 20, the rubber pad 29 is arranged on the bottom wall of the lower pressing plate 21, and the rubber pad 29 is fixedly connected to the bottom wall of the lower pressing plate 21 by gluing or the like, the rotating groove 36 is opened on the lifting plate 18, the installation box 31 is a hollow box body without a cover, and the installation box 31 is arranged on the bottom wall of the lifting plate 18,The installation box 31 is fixedly connected to the bottom wall of the lifting plate 18 by means of bolts, etc. The hollow inner cavity of the installation box 31 is connected to the rotating groove 36. The lifting telescopic rod 32 is arranged on the bottom wall of the hollow inner cavity of the installation box 31. The lifting telescopic rod 32 is fixedly connected to the bottom wall of the hollow inner cavity of the installation box 31 by means of bolts, etc. The rotating box 35 is arranged on the lifting telescopic rod 32. The bottom wall of the rotating box 35 is fixedly connected to the lifting telescopic rod 32 by means of bolts, etc. The rotating box 35 is a hollow box without a cover. The rotating roller 34 is inserted in the hollow cavity of the rotating box 35. The rotating roller 34 is rotatably connected to the side wall of the hollow cavity of the rotating box 35 by means of bearings, etc. The second motor 33 is arranged on the bottom wall of the rotating box 35. The second motor 33 is fixedly connected to the bottom wall of the rotating box 35 by means of bolts, etc. The second motor 33 is connected to the rotating roller 34 by means of pulleys and V-belts, so that the motor can drive the rotating roller 34 to rotate.

[0042] Working principle: When in use, the pressure vessel 100 is a hollow cylindrical section. Two pressure vessels 100 are placed on the truncated table rotating block 9 in sequence. Initially, the telescopic rod 19 is in a retracted state, and the distance between the lifting plate 18 and the arc alignment plate 20 is smaller than the inner diameter of the pressure vessel 100. The lifting plate 18 and the arc alignment plate 20 are aligned with the inner hole of the pressure vessel 100 under the drive of the telescopic rod 26. Then, the motor 17 drives the truncated table rotating block 9 to rotate through the chain, so that the truncated table rotating block 9 drives the first pressure vessel 100 to move toward the lifting plate 18 until the first pressure vessel 100 is sleeved on the lifting plate 18 and fits the limit plate 38. The second pressure vessel 100 is placed on the truncated table rotating block 9, and the second pressure vessel 1 00 moves, and stops when it is sleeved on the lifting plate 18 and touches the first pressure container 100, the telescopic rod three 11 extends, driving the rotating plate 16 in the vertical state to move downward, and after the rotating plate 16 completely passes over the lifting plate 18, the rotating telescopic rod 12 extends to push the rotating plate 16 to rotate to a horizontal state to hook the lifting plate 18, the telescopic rod three 11 contracts and the telescopic rod two 6 extends at the same time to jointly drive the lifting plate 18 to move upward along the guide rod one 5, and the two pressure containers 100 are lifted off the truncated table rotating block 9, the telescopic rod one 19 extends to push the arc alignment plate 20 downward, so that the arc alignment plate 20 is simultaneously attached to the inner walls of the two pressure containers 100, and the telescopic rod one 19 continues to extend to squeeze the reset spring 23, so that the arc alignment plate 20 is pressed tightly against the inner walls of the two pressure containers 100. The two pressure vessels 100 are displaced and aligned. At the same time, the downwardly moving lower pressure plate 21 drives a section of the pull rod 27 located on the clamping plate 26 to move downward, while the end located on the pull block 28 does not move, so that the pull rod 27 pulls the clamping plate 26 to move downward and moves horizontally toward the arc-shaped alignment plate 20, driving the two pressure vessels 100 to move horizontally, so that the two pressure vessels 100 are tightly attached. When the rubber pad 29 fits the arc-shaped alignment plate 20, the spot welding component 30 extends out of the spot welding port to spot weld and fix the two pressure vessels 100. Then, the telescopic rod 32 is lifted and extended to drive the rotating roller 34 to extend out of the rotating groove 36 to fit the inner walls of the two pressure vessels 100. The telescopic rod 19 contracts slightly to release the fixation of the spot-welded pressure vessel 100, so that the motor 2 33 drives the rotating roller 34 The rotating roller 34 drives the two pressure vessels 100 fixed by spot welding to rotate, and the position of the spot welding is changed. After multiple spot weldings, the telescopic rod 2 6 continues to extend and the telescopic rod 3 11 continues to contract, driving the two pressure vessels 100 fixed by spot welding to move upward, so that the two pressure vessels 100 are attached to the welding machine 37 and rotate under the drive of the rotating roller 34, so that the welding machine 37 welds the two pressure vessels 100. After the telescopic rod 2 6 contracts and the telescopic rod 3 11 extends to drive the two welded pressure vessels 100 to move down to the truncated table rotating block 9, the telescopic rod 3 11 continues to extend, so that the rotating telescopic rod 12 drives the rotating plate 16 to rotate to a vertical state and then moves upward, and the truncated table rotating block 9 rotates in the opposite direction to send out the two welded pressure vessels 100.

[0043] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for pressure vessels, characterized in that: include: An installation platform, wherein an L-shaped support plate and an inverted U-shaped support plate are provided on the installation platform, and a movable groove is provided on the L-shaped support plate; A transport assembly, the transport assembly comprising a displacement member disposed in the moving groove, a conveying member disposed on the mounting platform, and a lifting member disposed on the inverted U-shaped support plate; The fixing assembly comprises a lifting plate arranged on the displacement member, a rotating member arranged in the lifting plate, an alignment member arranged on the lifting plate, a welding machine arranged on the L-shaped support plate, and a spot welding member arranged on the alignment member. The alignment member comprises a telescopic rod 1 arranged on the lifting plate, a lower pressure plate arranged on the telescopic rod 1, an arc-shaped alignment plate arranged on the lower pressure plate, and a clamping plate arranged on the lower pressure plate. When the conveying member drives the pressure vessel to move and the two pressure vessels are sleeved on the lifting plate, the lifting member moves downward to hook the lifting plate, and the lifting member and the displacement member drive the lifting member to move. The plate lifts the two pressure vessels away from the conveying member, and the telescopic rod makes the lower pressing plate drive the arc-shaped alignment plate to press and fit the inner walls of the two pressure vessels at the same time, so that the two pressure vessels are aligned, and the clamping plate drives the two pressure vessels to fit closely to each other. After the lower pressing plate fits the arc-shaped alignment plate, the spot welding member fixes the two pressure vessels, and the arc-shaped alignment plate and the clamping plate release the connected pressure vessels, so that the rotating member extends out of the lifting plate, and at the same time, the lifting member and the displacement member drive the pressure vessel fixed by spot welding to fit the welding machine, so that the rotating member drives the spot-welded pressure vessel to rotate, and at the same time, the welding machine welds the spot-welded pressure vessel; The conveying member includes a support plate arranged on the mounting platform, a rotating shaft inserted on the support plate, a round table rotating block arranged on the rotating shaft, a motor arranged on the mounting platform, and a limit plate arranged on the mounting platform; The motor 1 is used to drive the truncated table rotating block to rotate, so that the truncated table rotating block drives the pressure vessel placed on the truncated table rotating block to move until it touches the limit plate or another pressure vessel; The displacement member includes a telescopic rod 2 arranged on the bottom wall of the moving groove and a guide rod 1 arranged on the bottom wall of the moving groove, the lifting plate is sleeved on the guide rod 1, and the lifting member includes a telescopic rod 3 arranged in the inverted U-shaped support plate, a limit block arranged on the telescopic rod 3, a rotating plate arranged on the limit block, a slide groove opened on the rotating plate, a slider arranged in the slide groove, a side plate arranged on the limit block, and a rotating telescopic rod with one end arranged on the slider and the other end arranged on the side plate; The rotating telescopic rod is used to drive the rotating plate to rotate in a vertical or horizontal state, so that the telescopic rod three can drive the rotating plate in a vertical state to pass over the lifting plate and then rotate to a horizontal state to hook the lifting plate, and together with the telescopic rod two, drive the lifting plate to move along the guide rod one, and the rotating plate is in a vertical state, so that the rotating plate is driven by the telescopic rod three to move above the lifting plate to avoid interfering with the round table rotating block in conveying the pressure vessel; The alignment member also includes a guide rod 2 passing through the lower pressing plate and arranged on the arc-shaped alignment plate, a return spring sleeved on the guide rod 2, an insertion rod arranged on the lower pressing plate, a return spring 2 sleeved on the insertion rod, a pull block arranged on the guide rod 2, a spot welding opening opened on the arc-shaped alignment plate, a pull rod with one end arranged on the clamping plate and the other end arranged on the pull block, and a rubber pad arranged on the lower pressing plate; The telescopic rod 1 pushes the arc-shaped alignment plate to fit the inner wall of the pressure vessel, so that the reset spring contracts, and the telescopic rod 1 can continue to push the lower pressure plate, so that the arc-shaped alignment plate is close to the inner wall of the lower pressure plate, so that the two pressure vessels are aligned, and the pull rod pulls the clamping plate to move horizontally, driving the two pressure vessels to fit tightly. When the rubber pad fits the arc-shaped alignment plate, the spot welding component extends out of the spot welding port to spot weld and fix the two pressure vessels.

2. The automatic welding device for pressure vessels according to claim 1, characterized in that: The rotating component includes a rotating groove opened on the lifting plate, an installation box arranged on the lifting plate below the rotating groove, a lifting telescopic rod arranged in the installation box, a rotating box arranged on the lifting telescopic rod, a second motor arranged at the bottom of the rotating box, and a rotating roller arranged in the rotating box.

3. The automatic welding device for pressure vessels according to claim 2 is characterized in that: When the two pressure vessels are fixed by spot welding, the lifting telescopic rod drives the rotating roller to extend out of the rotating groove, so that the rotating roller rotates in contact with the pressure vessel fixed by spot welding, and the spot welding position is changed or the welding machine welds the two pressure vessels.

4. A welding method based on the automatic welding device for pressure vessels according to claim 3, characterized in that: include: S1: placing two pressure vessels on the truncated table rotating block in sequence, so that the truncated table rotating block drives the first pressure vessel to move until the first pressure vessel is sleeved on the lifting plate and fits the limit plate, and stops, and the second pressure vessel is sleeved on the lifting plate and touches the first pressure vessel, and stops; S2: the telescopic rod 3 drives the rotating plate in the vertical state to move, passes over the lifting plate and then rotates to the horizontal state to hook the lifting plate, and together with the telescopic rod 2 drives the lifting plate to move upward along the guide rod 1, lifting the two pressure vessels away from the truncated table rotating block; S3: the telescopic rod is extended to push the arc-shaped alignment plate to fit the inner wall of the pressure vessel, so that the two pressure vessels are aligned, and at the same time, the lower pressing plate moves downward so that the pull rod pulls the clamping plate to move horizontally, so that the two pressure vessels are closely attached, and the spot welding component extends out of the spot welding port to spot weld and fix the two pressure vessels; S4: the lifting telescopic rod drives the rotating roller to extend out of the rotating groove, and the second motor drives the rotating roller to rotate, so that the rotating roller drives the two pressure vessels fixed by spot welding to rotate, and the position of the spot welding is changed; S5: the telescopic rod 2 and the telescopic rod 3 drive the two pressure vessels fixed by spot welding to move upward, so that the two pressure vessels are attached to the welding machine and rotate under the drive of the rotating roller, so that the welding machine welds the two pressure vessels; S6: After the telescopic rods 2 and 3 drive the two welded pressure vessels to move down to the truncated table rotating block, the telescopic rod 3 continues to extend, the rotating plate rotates to a vertical state and then moves up, and the truncated table rotating block rotates in the opposite direction to deliver the two welded pressure vessels.

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