A special-shaped head welding device

Abstract

The present invention relates to the technical field of head welding, and particularly relates to a special-shaped head welding device, which includes a bottom plate. A turntable for placing a tank body is arranged on the bottom plate, and a driving component for driving the turntable to rotate is arranged inside the bottom plate. A lifting tool for hoisting a special-shaped head is further arranged at the top of the bottom plate, and a welding device for welding the head is arranged on one side of the lifting tool. Among them, the lifting tool includes a cross beam, and liftable columns are symmetrically arranged at the bottoms of both ends of the cross beam for driving the cross beam to move in the vertical direction. The columns are slidably arranged on the top of the bottom plate, and the lifting tool can move back and forth on the bottom plate. The present invention can realize the automatic positioning of the head and the tank body to ensure the precise docking between the two. At the same time, the device does not require manual adjustment of the distance between the welding torch and the tank body, thus realizing the automated welding process. It not only improves the work efficiency but also ensures the consistency and reliability of the welding quality.

Description

Technical Field

[0001] The present invention relates to the technical field of head welding, and particularly relates to a welding device for special-shaped heads. Background Art

[0002] In modern industrial production, the manufacturing and welding of tanks are one of the key processes in many industries, especially in the fields of chemical industry, food processing, pharmaceuticals, etc. Tanks usually consist of multiple parts, and the head is one of the important components of the tank; the designs of heads are diverse, including elliptical and other special-shaped heads, and these heads need to be accurately positioned and welded onto the tank to ensure the sealing performance and structural strength of the tank; during positioning, operators manually align the head with the tank and then use a welding torch for welding, which has problems such as inaccurate positioning and unstable welding quality.

[0003] The patent with the application number CN202310231239.9 discloses a welding device for a pressure tank head, including an equipment frame and an operation frame arranged along the equipment frame; a positioning component is arranged on the equipment frame, and the pressure tank is loaded into the inner cavity of the equipment frame and fixed by the positioning component; a pressing frame for fixing the head and a welding frame for welding the head are arranged on the operation frame.

[0004] However, when it is in use, it still requires manual alignment of the head with the tank, and it is difficult to quickly and automatically dock a special-shaped head with its corresponding special-shaped tank and manually adjust the distance between the welding torch and the docking position for welding, making it difficult to solve the problems mentioned above. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a welding device for special-shaped heads to solve the problem that the existing welding devices for special-shaped heads are difficult to automatically position the head and the tank and require manual adjustment of the distance between the welding torch and the docking position for welding.

[0006] Based on the above purpose, the present invention provides a welding device for special-shaped heads, including a bottom plate. A turntable for placing the tank is arranged on the bottom plate, and a driving component for driving the turntable to rotate is arranged inside the bottom plate. A hoist for hoisting the special-shaped head is further arranged on the top of the bottom plate, and a welding device for welding the head is arranged on one side of the hoist.

[0007] Wherein, the hoist includes a cross beam, and liftable columns are symmetrically arranged at the bottoms of both ends of the cross beam for driving the cross beam to move in the vertical direction. The columns are slidably arranged on the top of the bottom plate, and the hoist can move back and forth on the bottom plate; a slider is slidably arranged at the bottom of the cross beam, and an elliptical hanging plate is rotatably arranged at the bottom of the slider, and the hanging plate can slide left and right relative to the cross beam.

[0008] At the center of the bottom of the hanging plate, a fourth electric push rod is provided, and at the bottom of the fourth electric push rod, an electric suction cup is provided for adsorbing and fixing the head; at the front, rear, left, and right ends of the bottom of the hanging plate, main positioning jigs are symmetrically arranged. After the four groups of main positioning jigs clamp the outer periphery of the tank body, they can position the horizontal and longitudinal positions of the head to be consistent with those of the tank body; at the front and rear sides of the two focal points at the bottom of the hanging plate, auxiliary positioning jigs are symmetrically arranged respectively. After the auxiliary positioning jigs clamp the outer periphery of the tank body, they can position the angle of the head to be consistent with that of the tank body.

[0009] Further, the column includes a bottom column, and at the top of the bottom column, a third electric push rod is provided, and the top of the third electric push rod is fixedly connected to the bottom of the cross beam.

[0010] Further, two slide rails are symmetrically arranged on the bottom plate, the two slide rails are arranged longitudinally, and the two slide rails are respectively in sliding fit with the bottoms of the two bottom columns.

[0011] Further, the main positioning jig includes a first electric telescopic rod, the top of the first electric telescopic rod is fixedly connected to the bottom of the hanging plate, at the bottom of the first electric telescopic rod, a first mounting block is fixedly arranged, a fifth electric push rod is fixedly sleeved in the first mounting block, and at the end of the moving end of the fifth electric push rod close to the electric suction cup, a positioning plate is fixedly arranged.

[0012] Further, on the side of the positioning plate close to the electric suction cup, a receiving groove is formed, at the top of the inner cavity of the receiving groove, an elastic plate is rotatably arranged, between the elastic plate and the receiving groove, a support spring is arranged, one end of the support spring is connected to the elastic plate, and the other end is connected to the groove wall of the receiving groove.

[0013] Further, the auxiliary positioning jig includes a second electric telescopic rod, the top of the second electric telescopic rod is fixedly connected to the bottom of the hanging plate, at the bottom of the second electric telescopic rod, a second mounting block is fixedly arranged, a sixth electric push rod is fixedly sleeved in the second mounting block, and at the end of the moving end of the sixth electric push rod close to the electric suction cup, a clamping plate is movably connected.

[0014] Further, the welding device includes a lifting vertical rod, at the bottom of the lifting vertical rod, an electric track for driving the lifting vertical rod to move back and forth is provided, on the front side of the lifting vertical rod, a sliding rod is fixedly arranged, a collar is slidably sleeved on the sliding rod, between the collar and the lifting vertical rod, a first spring is arranged, one end of the first spring is connected to the lifting vertical rod, and the other end is connected to the collar. The front side of the collar is fixedly connected to a support rod, and the other end of the support rod is fixedly connected to an operation plate; at the top of the operation plate, a fine-tuning electric drive rod is fixedly arranged, at the top of the fine-tuning electric drive rod, a longitudinal plate is fixedly arranged, and a welding assembly is arranged on the front side of the longitudinal plate; at the center of the front side of the operation plate, a horizontal pulley assembly is also arranged, and a limiting plate is arranged at the end of the sliding rod far from the lifting vertical rod.

[0015] Further, the pulley assembly includes a lower pulley bracket fixedly arranged on the front side of the operation board. A fixed pulley is rotatably arranged at the other end of the lower pulley bracket, and a receiver is arranged at the top of the lower pulley bracket. An elastic telescopic rod is fixedly arranged on the front side of the longitudinal board, and an upper pulley bracket is fixedly arranged at the other end of the elastic telescopic rod. A movable pulley is rotatably arranged at the other end of the upper pulley bracket, and a laser emitter is arranged at the top of the upper pulley bracket.

[0016] Further, the welding assembly includes a second electric push rod fixedly sleeved on the longitudinal board. The end of the movable end of the second electric push rod close to the spreader is fixedly connected with a welding torch. A support frame is arranged at the top of the longitudinal board, and a welding machine is arranged on the support frame. The welding machine is electrically connected with the welding torch.

[0017] Further, an installation seat is also fixedly arranged on the front side of the operation board. A cleaning roller for cleaning the butt joint of the tank body and the head is rotatably connected to the top of the installation seat. Brush hairs are arranged on the cleaning roller. A first transmission wheel for driving the cleaning roller to rotate is arranged at the bottom of the installation seat. The lower pulley bracket is provided with a second transmission wheel that rotates synchronously with the fixed pulley, and the same set of transmission belts are sleeved between the first transmission wheel and the second transmission wheel.

[0018] Advantages of the present invention: As can be seen from the above, an abnormal head welding device provided by the present invention can achieve precise angle and position adjustment between the elliptical head and the tank body through the provided main positioning fixture and auxiliary positioning fixture. When the four groups of auxiliary positioning fixtures are fixed on the outer periphery of the elliptical tank body, the angle of the head can be finely adjusted to ensure that the connecting line of the two foci of the head is parallel and aligned with the corresponding connecting line of the foci of the tank body. When the four groups of main positioning fixtures are also fixed to the outer periphery of the tank body, the front, back, left, and right positions of the head can be finely adjusted until the head and the tank body are completely aligned in the horizontal direction, so as to quickly and accurately complete the positioning of the head. In addition, through the provided collar, the first spring, and the pulley assembly, for abnormal-shaped tank bodies such as elliptical ones, when the tank body rotates, the first spring uses its own elastic effect to ensure that the pulley assembly always slides along the outer surface of the tank body, enabling the welding torch to automatically adjust the distance from the tank body and maintain a consistent welding spacing without manual intervention. This method not only significantly improves the welding efficiency but also improves the welding quality. This device can realize the automatic positioning of the head and the tank body to ensure precise docking between the two. At the same time, this device does not require manual adjustment of the distance between the welding torch and the tank body, thereby realizing an automated welding process, which not only improves the working efficiency but also ensures the consistency and reliability of the welding quality. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic diagram of the structure of the first perspective of the embodiment of the present invention;

[0021] Figure 2 Schematic diagram of the main view sectional structure of the cross beam of the embodiment of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the first perspective of the hanging plate of the embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the main positioning fixture structure of the embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the sectional structure of the positioning plate of the embodiment of the present invention;

[0025] Figure 6 Schematic diagram of the secondary positioning fixture structure of the embodiment of the present invention;

[0026] Figure 7 Schematic diagram of the welding device structure of the embodiment of the present invention;

[0027] Figure 8 In the embodiment of the present invention Figure 7 Enlarged structure diagram of A;

[0028] Figure 9 Schematic diagram of the sectional structure of the collar of the embodiment of the present invention;

[0029] Figure 10 In the embodiment of the present invention Figure 7 Enlarged structure diagram of B;

[0030] Figure 11 Schematic diagram of the welding assembly structure of the embodiment of the present invention;

[0031] Figure 12 Schematic diagram of the partial structure of the cleaning roller of the embodiment of the present invention;

[0032] Figure 13 Schematic diagram of the internal structure of the bottom plate of the embodiment of the present invention;

[0033] Figure 14 Schematic diagram of the top view structure of the cleaning roller of the embodiment of the present invention;

[0034] Figure 15 Schematic diagram of the partial internal structure of the cleaning roller according to an embodiment of the present invention;

[0035] Figure 16 According to an embodiment of the present invention Figure 15 Enlarged schematic diagram of C in the figure.

[0036] The labels in the figure are:

[0037] 1. Bottom plate; 101. Motor; 2. Turntable; 3. Lifting vertical rod; 301. Bottom rod; 302. First electric push rod; 303. Top rod; 4. Slide rod; 401. First spring; 402. Limiting plate; 5. Collar; 501. Damping pad; 6. Operating plate; 601. Support rod; 602. Longitudinal plate; 603. Fine adjustment electric drive rod; 7. Pulley assembly; 701. Lower pulley bracket; 702. Fixed pulley; 703. Receiver; 704. Elastic telescopic rod; 705. Upper pulley bracket; 706. Movable pulley; 707. Laser emitter; 8. Welding assembly; 801. Second electric push rod; 802. Welding torch; 803. Electric welding machine; 9. Column; 901. Bottom column; 902. Third electric push rod; 10. Slide rail; 11. Cross beam; 1101. Chute; 1102. Slide block; 1103. Round rod; 12. Hanging plate; 13. Fourth electric push rod; 14. Electric suction cup; 15. Main positioning fixture; 1501. First electric telescopic rod; 1502. First mounting block; 1503. Fifth electric push rod; 1504. Positioning plate; 1505. Accommodating groove; 1506. Elastic plate; 1507. Support spring; 16. Sub - positioning fixture; 1601. Second electric telescopic rod; 1602. Second mounting block; 1603. Sixth electric push rod; 1604. Clamping plate; 17. Electric track; 18. Air pump; 19. Mounting seat; 20. Cleaning roller; 2001. Hollow rod; 2002. Fixed half - shell; 2003. Air bag; 2004. Movable half - shell; 2005. Roller shaft; 2006. Ventilation hole; 2007. Activity groove; 2008. Sliding rod; 2009. Connecting spring; 21. Transmission belt; 22. Air inlet pump; 2201. Inflatable tube; 23. Distance measuring sensor. Detailed implementation manners

[0038] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0039] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the field to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0040] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 As shown in, a special-shaped head welding device includes a bottom plate 1, a turntable 2 for placing a tank body is arranged on the bottom plate 1, a driving assembly for driving the turntable 2 to rotate is arranged inside the bottom plate 1, a lifting tool for lifting a special-shaped head is further arranged on the top of the bottom plate 1, and a welding device for welding the head is arranged on one side of the lifting tool;

[0041] Among them, the lifting tool includes a cross beam 11, liftable columns 9 are symmetrically arranged at the bottoms of both ends of the cross beam 11 for driving the cross beam 11 to move in the vertical direction, the columns 9 are slidably arranged on the top of the bottom plate 1, and the lifting tool can move back and forth on the bottom plate 1; a slider 1102 is slidably arranged at the bottom of the cross beam 11, and an elliptical lifting plate 12 is rotatably arranged at the bottom of the slider 1102, and the lifting plate 12 can slide left and right relative to the cross beam 11;

[0042] At the center of the bottom of the hanging plate 12, a fourth electric push rod 13 is provided, and at the bottom of the fourth electric push rod 13, an electric suction cup 14 for adsorbing and fixing the head is provided; an air pump 18 is provided on the cross beam 11, and the air pump 18 is communicated with the electric suction cup 14 through a conduit to control the operation of the electric suction cup 14; at the front, rear, left and right ends of the bottom of the hanging plate 12, main positioning jigs 15 are respectively provided. After the four groups of main positioning jigs 15 clamp the outer periphery of the tank body, the horizontal and longitudinal positions of the head can be positioned to be consistent with those of the tank body; at the front and rear sides of the two focus positions at the bottom of the hanging plate 12, auxiliary positioning jigs 16 are symmetrically provided respectively; after the auxiliary positioning jigs 16 clamp the outer periphery of the tank body, the angle of the head can be positioned to be consistent with that of the tank body.

[0043] In this embodiment, first use a lifting tool to lift the special-shaped head in an elliptical shape; specifically, lift the cross beam 11 and the hanging plate 12 through the column 9 to make the electric suction cup 14 close to the head; then, start the electric suction cup 14 and adsorb and fix it on the head; after that, lift the hanging plate 12 again through the column 9 to lift the head to the top;

[0044] After that, place the elliptical tank body to be welded and adapted to the special-shaped head on the turntable 2, and adjust the position of the tank body through the driving assembly to make it in a position with an angle approximately consistent with that of the head;

[0045] Next, through the lifting of the column 9, move the head above the tank body, start the two pairs of front and rear opposite auxiliary positioning jigs 16 to move down to the outer periphery of the top of the tank body and then move closer to each other synchronously to clamp on the outer periphery of the tank body. Since the auxiliary positioning jigs 16 are arranged on the front and rear sides of the bottom focus positions, and the hanging plate 12 is rotationally connected with the slider 1102 so that the hanging plate 12 can rotate relative to the cross beam 11 with the slider 1102 as the center; therefore, when the four groups of auxiliary positioning jigs 16 clamp on the outer periphery of the elliptical tank body, the angle of the elliptical head can be finely adjusted so that the line segment formed by the connection of the two foci of the head is parallel to the line segment formed by the connection of the two foci of the tank body; start the left and right two groups of main positioning jigs 15 and the front and rear two groups of main positioning jigs 15 to move down to the top of the tank body respectively, and then move closer to each other synchronously to clamp on the outer periphery of the tank body, which can finely adjust the front, rear, left and right positions of the head to make the front, rear, left and right positions of the head consistent with the position of the tank body. At this time, the positions of the head and the tank body are completely coincident in the horizontal direction, and the positioning of the head can be completed quickly and accurately;

[0046] After the head is positioned, start the fourth electric push rod 13 to push down the electric suction cup 14 to drive the head to press down on the tank body to complete the docking of the head and the tank body; after docking, first loosen the main positioning jigs 15 and the auxiliary positioning jigs 16 and move the main positioning jigs 15 and the auxiliary positioning jigs 16 up to the reset position, and then start the welding device to weld the docking part between the head and the tank body;

[0047] After welding is completed, turn off the electric suction cup 14 and move the lifting device away; remove the welded tank body to complete the entire welding process.

[0048] Preferably, the column 9 includes a bottom column 901. A third electric push rod 902 is arranged at the top of the bottom column 901, and the top of the third electric push rod 902 is fixedly connected to the bottom of the cross beam 11.

[0049] Two groups of slide rails 10 are symmetrically arranged on the bottom plate 1. The two groups of slide rails 10 are arranged longitudinally, and the two groups of slide rails 10 are respectively in sliding fit with the bottoms of the two groups of bottom columns 901.

[0050] By setting the third electric push rod 902, the position of the lifting plate 12 and the electric suction cup 14 in the vertical direction can be adjusted. Specifically, when lifting the head, the worker first places the head on the turntable 2. After the driving assembly drives the turntable 2 to rotate to adjust the head to a suitable position, then first control the third electric push rod 902 to drive the lifting plate 12 to move down to the lowest position, and then control the fourth electric push rod 13 to drive the electric suction cup 14 to move down to the center of the top of the head. Then, start the electric suction cup 14 to adsorb and fix it on the head. After that, lift and lower the lifting plate 12 again through the third electric push rod 902 to lift the head to the top.

[0051] In addition, by setting the main positioning fixture 15, when the head is placed on the turntable 2 and ready for lifting, start the four groups of main positioning fixtures 15 to move down to the outer periphery of the head and then clamp and center the head, which can center the head at the center of the lifting plate 12 and ensure that the suction cup can adsorb at the center of the top of the head.

[0052] Preferably, the main positioning fixture 15 includes a first electric telescopic rod 1501. The top of the first electric telescopic rod 1501 is fixedly connected to the bottom of the lifting plate 12. A first mounting block 1502 is fixedly arranged at the bottom of the first electric telescopic rod 1501. A fifth electric push rod 1503 is fixedly sleeved in the first mounting block 1502. A positioning plate 1504 is fixedly arranged at the end of the moving end of the fifth electric push rod 1503 on the side close to the electric suction cup 14.

[0053] A receiving groove 1505 is formed on the side of the positioning plate 1504 close to the electric suction cup 14. An elastic plate 1506 is rotatably arranged at the top of the inner cavity of the receiving groove 1505. A support spring 1507 is arranged between the elastic plate 1506 and the groove wall of the receiving groove 1505. One end of the support spring 1507 is connected to the elastic plate 1506, and the other end is connected to the groove wall of the receiving groove 1505.

[0054] After starting the left and right two groups of main positioning fixtures 15 and the front and back two groups of main positioning fixtures 15 to move down to the top of the tank body respectively, then move closer to each other synchronously to clamp the outer periphery of the tank body, which can finely adjust the front, back, left and right positions of the head to make the front, back, left and right positions of the head consistent with the position of the tank body. At this time, the positions of the head and the tank body completely coincide in the horizontal direction.

[0055] Specifically, the four groups of first electric telescopic rods 1501 are synchronously started to drive the four groups of first mounting blocks 1502 to move downward, so that the four groups of positioning plates 1504 are moved downward in the vertical direction to the outer periphery of the top of the tank body; then, the four groups of fifth electric push rods 1503 are synchronously started to push the four groups of positioning plates 1504, so that the left and right groups of positioning plates 1504 are synchronously approached and closely attached to the left and right sides of the tank body, and the front and rear groups of positioning plates 1504 are synchronously approached and closely attached to the outer periphery of the tank body;

[0056] When the positioning plates 1504 on the left and right sides move synchronously and fit closely to the sides of the tank body, the hanging plate 12 can move left and right along the crossbeam 11 through the slider 1102, and the hanging plate 12 can drive the hoisted head to move together. Therefore, the reaction force generated by the positioning plates 1504 close to the tank body will cause the head to automatically adjust its position in the left and right directions, ensuring the precise alignment between the head and the tank body in the horizontal direction.

[0057] When the front and rear two sets of positioning plates 1504 move synchronously and fit closely to the side of the tank body, since the upright column 9 can drive the cross beam 11 and the hanging plate 12 to move longitudinally on the bottom plate 1, and the hanging plate 12 can drive the hoisted head to move together, the reaction force generated by the positioning plate 1504 close to the tank body will cause the head to automatically adjust its position in the longitudinal direction, ensuring the precise alignment between the head and the tank body in the longitudinal direction;

[0058] In addition, through the provision of the elastic plate 1506, during the docking process between the head and the tank body, the fourth electric push rod 13 drives the head to move downward, and when moving downward, the head will contact the elastic plates 1506 on all sides and squeeze the elastic plates 1506 into the accommodating groove 1505. The elasticity of the support spring 1507 itself can absorb the shaking generated by the head during the downward movement, thereby ensuring the stability of the head during the docking process and further improving the accuracy of the docking between the head and the tank body.

[0059] Preferably, the auxiliary positioning fixture 16 includes a second electric telescopic rod 1601, the top of the second electric telescopic rod 1601 is fixedly connected to the bottom of the hanging plate 12, the bottom of the second electric telescopic rod 1601 is fixedly provided with a second mounting block 1602, a sixth electric push rod 1603 is fixedly sleeved in the second mounting block 1602, and the mobile end of the sixth electric push rod 1603 close to the electric suction cup 14 is movably connected with a clamping plate 1604;

[0060] When the four sets of auxiliary positioning fixtures 16 are clamped on the periphery of the elliptical tank body, the angle of the elliptical head can be finely adjusted so that the line segment formed by the two sets of focus lines of the head and the line segment formed by the two sets of focus lines of the tank body are parallel to each other;

[0061] Specifically, as a special-shaped head, an oval head needs to align its angle with the tank body during docking. The line segment formed by the connection of the two sets of foci of the head should be parallel to the line segment formed by the connection of the two sets of foci of the tank body to achieve docking. When in use, start the four sets of second electric telescopic rods 1601 synchronously to drive the four sets of second mounting blocks 1602 to move downward, so that the four sets of clamping plates 1604 move downward in the vertical direction to the outer periphery of the top of the tank body. Then, start the four sets of sixth electric push rods 1603 synchronously to push the four sets of clamping plates 1604, so that the front and rear clamping plates 1604 approach and closely adhere to the front and rear sides of the tank body synchronously, making the line segment formed by the connection of the two sets of foci of the head parallel to the line segment formed by the connection of the two sets of foci of the tank body, thereby accurately determining the angular positioning of the head relative to the tank body.

[0062] Preferably, the welding device includes a lifting vertical rod 3. The bottom of the lifting vertical rod 3 is provided with an electric track 17 for driving the lifting vertical rod 3 to move back and forth. A sliding rod 4 is fixedly arranged on the front side of the lifting vertical rod 3. A collar 5 is slidably sleeved on the sliding rod 4. A first spring 401 is arranged between the collar 5 and the lifting vertical rod 3. One end of the first spring 401 is connected to the lifting vertical rod 3, and the other end is connected to the collar 5. A support rod 601 is fixedly connected to the front side of the collar 5. The other end of the support rod 601 is fixedly connected to an operation board 6. A fine-tuning electric drive rod 603 is fixedly arranged on the top of the operation board 6. The top of the fine-tuning electric drive rod 603 is fixedly arranged with a longitudinal board 602. A welding assembly 8 is arranged on the front side of the longitudinal board 602. A horizontal pulley assembly 7 is also arranged at the center of the front side of the operation board 6. A limit plate 402 is arranged at one end of the sliding rod 4 away from the lifting vertical rod 3.

[0063] A damping pad 501 is arranged on the inner circumference of the collar 5. The collar 5 is sleeved on the sliding rod 4 through the damping pad 501 to prevent the collar 5 from shaking caused by the slight vibration generated when the first spring 401 deforms, ensuring the stability of the collar 5.

[0064] The lifting vertical rod 3 includes a bottom rod 301. The bottom of the bottom rod 301 is slidably matched with the electric track 17. The top of the bottom rod 301 is fixedly provided with a first electric push rod 302. The top of the first electric push rod 302 is fixedly provided with a top rod 303. The front side of the top rod 303 is fixedly connected to the sliding rod 4.

[0065] The welding assembly 8 includes a second electric push rod 801. The second electric push rod 801 is fixedly sleeved on the longitudinal board 602. The end of the mobile end of the second electric push rod 801 close to the hoist is fixedly connected to a welding torch 802. A support frame is arranged on the top of the longitudinal board 602. A welding machine 803 is arranged on the support frame. The welding machine 803 is electrically connected to the welding torch 802.

[0066] In this embodiment, after the head and the tank body are butted, first start the first electric push rod 302 for rough adjustment, and then start the fine adjustment electric drive rod 603 to finely adjust and control the up and down movement of the longitudinal plate 602, so that the welding torch 802 on the operation plate 6 moves to the same height as the butting position of the head and the tank body. After that, drive the pulley assembly 7 on the operation plate 6 to abut against the outer periphery of the tank body through the electric track 17, so that the first spring 401 deforms and stores energy;

[0067] After that, start the second electric push rod 801 to push the welding torch 802 close to the butting position of the head and the tank body for welding; during the welding process, the driving device will drive the turntable 2 to rotate, so that the tank body rotates; since the fourth electric push rod 13 continuously presses the head against the top of the tank body through the electric suction cup 14, the rotation of the tank body can drive the head to move synchronously; the welding torch 802 can perform a full-round welding on the joint between the head and the tank body;

[0068] Particularly, for special-shaped tank bodies such as elliptical ones, when they rotate, the first spring 401 uses its own elastic effect to ensure that the pulley assembly 7 always slides along the outer surface of the tank body; so that the welding torch 802 can automatically adjust the distance from the tank body and maintain a consistent welding spacing without manual intervention; this method not only significantly improves the welding efficiency but also improves the welding quality;

[0069] Preferably, the pulley assembly 7 includes a lower pulley bracket 701, the lower pulley bracket 701 is fixedly arranged on the front side of the operation plate 6, a fixed pulley 702 is rotatably arranged at the other end of the lower pulley bracket 701, and a receiver 703 is arranged at the top of the lower pulley bracket 701; an elastic telescopic rod 704 is fixedly arranged on the front side of the longitudinal plate 602, an upper pulley bracket 705 is fixedly arranged at the other end of the elastic telescopic rod 704, a movable pulley 706 is rotatably arranged at the other end of the upper pulley bracket 705, the movable pulley 706 is located above the welding torch 802, and a laser emitter 707 is arranged at the top of the upper pulley bracket 705; both the laser emitter 707 and the laser receiver 703 are electrically connected to the control system;

[0070] A mounting seat 19 is also fixedly arranged on the front side of the operation plate 6, a cleaning roller 20 for cleaning the butting position of the tank body and the head is rotatably connected to the top of the mounting seat 19, bristles are arranged on the cleaning roller 20, a first transmission wheel for driving the cleaning roller 20 to rotate is arranged at the bottom of the mounting seat 19, a second transmission wheel that rotates synchronously with the fixed pulley 702 is arranged on the lower pulley bracket 701, and the same set of transmission belts 21 are sleeved between the first transmission wheel and the second transmission wheel;

[0071] In this embodiment, the docking accuracy between the tank body and the head is detected before welding; specifically, after the head and the tank body are docked, first start the first electric push rod 302 for rough adjustment, and then start the fine adjustment electric drive rod 603 to finely adjust and control the up and down movement of the longitudinal plate 602, so that the welding torch 802 on the operation plate 6 moves to the same height at the docking position of the head and the tank body; at this time, the fixed pulley 702 is located on the lower side of the docking position, and the movable pulley 706 is located on the upper side of the docking position; then, drive the operation plate 6 through the electric track 17 to make the fixed pulley 702 and the movable pulley 706 respectively abut against the outer circumference of the tank body and the head, and then deform and store energy in the first spring 401; before welding, first start the driving device to drive the turntable 2 to rotate and make the tank body rotate one week;

[0072] The relative movement between the movable pulley 706 and the fixed pulley 702 can be judged by using the position emitted by the laser emitter 707 received by the receiver 703; by judging whether there is relative movement between the movable pulley 706 and the fixed pulley 702, it can be directly judged whether the head and the tank body are successfully docked;

[0073] If the tank body and the head are successfully docked, when the fixed pulley 702 and the movable pulley 706 rotate one week along the outer walls of the tank body and the head, the movable pulley 706 and the fixed pulley 702 will always remain relatively stationary; it is determined that the tank body and the head are successfully docked; start the welding assembly 8 to weld the docking position;

[0074] If the tank body and the head are successfully docked, when the fixed pulley 702 and the movable pulley 706 rotate one week along the outer walls of the tank body and the head, the movable pulley 706 and the fixed pulley 702 will generate relative movement; it is determined that the head and the tank body are docked unsuccessfully; cancel the subsequent welding process, separate the tank body and the head, and then dock again;

[0075] In addition, through the provided cleaning roller 20, during the process of detecting the docking accuracy between the tank body and the head, the rotation of the second transmission wheel is driven by the self-rotation generated by the movement of the fixed pulley 702 along the outer circumference of the tank body, and the second transmission wheel drives the first transmission wheel to rotate through the transmission belt 21, so as to drive the cleaning roller 20 to rotate. After the cleaning roller 20 rotates, it can clean the docking position through its own bristles, improving the welding effect.

[0076] Preferably, a horizontal chute 1101 is opened at the bottom of the cross beam 11, the inner wall of the chute 1101 is slidably connected with the slider 1102, the bottom of the slider 1102 is fixedly connected with a round rod 1103, and the bottom of the round rod 1103 is rotatably connected with the top of the hanging plate 12;

[0077] Preferably, the driving assembly includes a motor 101, the output rod at the top of the motor 101 is arranged in the inner cavity of the bottom plate 1 and penetrates through the top of the bottom plate 1 and is fixedly connected with the center of the bottom of the turntable 2; starting the motor 101 can drive the turntable 2 to rotate, so as to drive the tank body on the turntable 2 to rotate;

[0078] Preferably, the cleaning roller 20 includes a hollow rod 2001. A hollow roller shaft 2005 communicates with the bottom of the hollow rod 2001. The roller shaft 2005 is rotatably connected to the mounting seat 19 and fixedly connected to the first driving wheel. On one side of the outer periphery of the hollow rod 2001, a fixed half shell 2002 is fixedly sleeved. On the side of the outer periphery of the hollow rod 2001 symmetrical to the fixed half shell 2002, a ventilation hole 2006 is provided and a movable half shell 2004 is movably arranged. The two ends of the movable half shell 2004 abut against the two ends of the fixed half shell 2002. Brush hairs are arranged on the outer peripheries of both. An air bag 2003 is arranged on the inner periphery of the movable half shell 2004. The air inlet hole of the air bag 2003 communicates with the ventilation hole 2006. Wherein, movable grooves 2007 are respectively opened at the two ends of the fixed half shell 2002. Sliding rods 2008 adapted to the movable grooves 2007 are respectively opened at the two ends of the movable half shell 2004. A limiting groove is opened in the movable groove 2007. A slider 1102 adapted to the limiting groove is arranged on the sliding rod 2008. A connecting spring 2009 is arranged in the movable groove 2007. One end of the connecting spring 2009 is connected to the sliding rod 2008, and the other end is connected to the movable groove 2007.

[0079] An air pump 22 is fixedly arranged on the operation panel 6. An air charging pipe 2201 is arranged on the operation panel 6. One end of the air charging pipe 2201 passes through the bottom of the roller shaft 2005 and penetrates into the interior of the roller shaft 2005 and then into the hollow rod 2001. The other end of the air charging pipe 2201 communicates with the air pump 22.

[0080] A distance measuring sensor 23 is fixedly connected to one side surface of the mounting seat 19 for measuring the distance to the head. The distance measuring sensor 23 is electrically connected to the air pump 22 for controlling the opening and closing of the air pump 22.

[0081] Specifically, during use, when the welding torch 802 is working, the distance measuring sensor 23 monitors the distance from the head. Since the head is elliptical, when welding a smaller head, when the narrow ends at both ends of the head abut against the fixed pulley 702, at this time, the cleaning roller 20 is the farthest from the head, making it difficult to effectively clean the weld of the head. At this time, when the distance measuring sensor 23 detects a relatively large distance from the head, it sends a working signal to the air pump 22. The air pump 22 inflates the hollow rod 2001 through the air charging pipe 2201 and inflates the airbag 2003 through the air vent holes 2006 on the hollow rod 2001, causing the airbag 2003 to inflate and expand. The inflated airbag 2003 pushes the movable half shell 2004 outwards, making the bristles of the movable half shell 2004 contact the head to clean the weld of the head. At this time, the movable half shell 2004 drives the sliding rod 2008 to move outwards and deforms and stores energy in the connecting spring 2009. When the fixed pulley 702 moves out from the narrow ends at both ends of the head, the distance measuring sensor 23 detects that the distance from the head becomes smaller. At this time, the distance measuring sensor 23 sends a stop working signal to the air pump 22. The stored energy of the connecting spring 2009 is released to pull the sliding rod 2008 back to its original position and reset the movable half shell 2004, and the gas in the airbag 2003 is squeezed outwards through the gap between the ventilation pipe and the roller shaft 2005.

[0082] The special-shaped head welding device provided by the present invention can achieve precise angle and position adjustment between the elliptical head and the tank body through the provided main positioning fixture 15 and sub-positioning fixture 16. When the four groups of sub-positioning fixtures 16 are fixed on the outer periphery of the elliptical tank body, the angle of the head can be finely adjusted to ensure that the connecting line of the two foci of the head is parallel and aligned with the corresponding connecting line of the foci of the tank body. When the four groups of main positioning fixtures 15 are also fixed to the outer periphery of the tank body, the front, back, left, and right positions of the head can be finely adjusted until the head and the tank body are completely aligned in the horizontal direction, thus quickly and accurately completing the positioning of the head. In addition, through the provided collar 5, the first spring 401, and the pulley assembly 7, for special-shaped tank bodies such as elliptical ones, when it rotates, the first spring 401 uses its own elastic effect to ensure that the pulley assembly 7 always slides along the outer surface of the tank body. This enables the welding torch 802 to automatically adjust the distance from the tank body and maintain a consistent welding spacing without manual intervention, significantly improving the welding efficiency and also improving the welding quality. This device can achieve automatic positioning of the head and the tank body to ensure precise docking between the two. At the same time, this device does not require manual adjustment of the distance between the welding torch 802 and the tank body, thus realizing an automated welding process. It not only improves the work efficiency but also ensures the consistency and reliability of the welding quality.

[0083] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, and for the sake of brevity, they are not provided in detail.

[0084] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A special-shaped head welding device, comprising a bottom plate (1), a turntable (2) for placing a tank body is arranged on the bottom plate (1), and a driving component for driving the turntable (2) to rotate is arranged inside the bottom plate (1), characterized in that: The top of the bottom plate (1) is also provided with a lifting device for lifting the special-shaped head, and one side of the lifting device is provided with a welding device for welding the head, and the special-shaped head is an elliptical head; The sling comprises a crossbeam (11), and liftable columns (9) are symmetrically arranged at the bottom of both ends of the crossbeam (11) for driving the crossbeam (11) to move in the vertical direction. The columns (9) are slidably arranged on the top of the bottom plate (1), and the sling can move forward and backward on the bottom plate (1); a slider (1102) is slidably arranged at the bottom of the crossbeam (11), and an elliptical hanging plate (12) is rotatably arranged at the bottom of the slider (1102), and the hanging plate (12) can slide left and right relative to the crossbeam (11); A fourth electric push rod (13) is arranged at the center of the bottom of the hanging plate (12), and an electric suction cup (14) for adsorbing and fixing the end cap is arranged at the bottom of the fourth electric push rod (13); main positioning fixtures (15) are symmetrically arranged at the front, back, left, and right ends of the bottom of the hanging plate (12); after the four groups of main positioning fixtures (15) clamp the outer periphery of the tank body, the horizontal and longitudinal positions of the end cap can be positioned to be consistent with the tank body; auxiliary positioning fixtures (16) are symmetrically arranged at the front and back sides of the two groups of focal points at the bottom of the hanging plate (12); after the auxiliary positioning fixtures (16) clamp the outer periphery of the tank body, the angle of the end cap can be positioned to be consistent with the tank body; The main positioning fixture (15) comprises a first electric telescopic rod (1501), the top of the first electric telescopic rod (1501) is fixedly connected to the bottom of the hanging plate (12), the bottom of the first electric telescopic rod (1501) is fixedly provided with a first mounting block (1502), a fifth electric push rod (1503) is fixedly sleeved inside the first mounting block (1502), and a positioning plate (1504) is fixedly provided at the movable end of the fifth electric push rod (1503) close to the electric suction cup (14); The auxiliary positioning fixture (16) comprises a second electric telescopic rod (1601), the top of the second electric telescopic rod (1601) is fixedly connected to the bottom of the hanging plate (12), the bottom of the second electric telescopic rod (1601) is fixedly provided with a second mounting block (1602), a sixth electric push rod (1603) is fixedly sleeved inside the second mounting block (1602), and the movable end of the sixth electric push rod (1603) close to the electric suction cup (14) is movably connected with a clamping plate (1604); The welding device comprises a lifting pole (3), the bottom of the lifting pole (3) is provided with an electric track (17) for driving the lifting pole (3) to move forward and backward, a sliding rod (4) is fixedly provided on the front side of the lifting pole (3), a sleeve (5) is slidably sleeved on the sliding rod (4), a first spring (401) is provided between the sleeve (5) and the lifting pole (3), one end of the first spring (401) is connected to the lifting pole (3), and the other end is connected to the sleeve (5), the front side of the sleeve (5) is fixedly connected to a support rod (601), and the support rod ( 601) is fixedly connected to an operating panel (6); a fine-tuning electric drive rod (603) is fixedly arranged on the top of the operating panel (6), a longitudinal plate (602) is fixedly arranged on the top of the fine-tuning electric drive rod (603), and a welding assembly (8) is arranged on the front side of the longitudinal plate (602); a horizontal pulley assembly (7) and a cleaning roller (20) located on one side of the pulley assembly (7) are also arranged at the center of the front side of the operating panel (6), and a limit plate (402) is arranged on the end of the slide rod (4) away from the lifting vertical rod (3); The cleaning roller (20) comprises a hollow rod (2001), the bottom of the hollow rod (2001) being connected to a hollow roller shaft (2005) rotatably arranged with an operating panel (6); a fixed half shell (2002) is fixedly sleeved on one side of the outer periphery of the hollow rod (2001), a vent hole (2006) is provided on one side of the outer periphery of the hollow rod (2001) symmetrical to the fixed half shell (2002), and a movable half shell is movably arranged (2004), the two ends of the movable half shell (2004) are in contact with the two ends of the fixed half shell (2002), the outer peripheries of both are provided with bristles, the inner periphery of the movable half shell (2004) is provided with an air bag (2003), the air inlet of the air bag (2003) is connected with the air vent (2006); wherein, the two ends of the fixed half shell (2002) are respectively provided with movable grooves (2007), and the two ends of the movable half shell (2004) are respectively provided with movable grooves (2008). A sliding rod (2008) adapted to the movable groove (2007) is provided, a limiting groove is provided in the movable groove (2007), a sliding block (1102) adapted to the limiting groove is provided on the sliding rod (2008), a connecting spring (2009) is provided in the movable groove (2007), one end of the connecting spring (2009) is connected to the sliding rod (2008), and the other end is connected to the movable groove (2007); an operating panel (6) An air pump (18), an air tube (2201) and a distance sensor (23) are arranged on the top; wherein one end of the air tube (2201) passes through the bottom of the roller shaft (2005) to the inside of the roller shaft (2005) and then to the inside of the hollow rod (2001), and the other end of the air tube (2201) is connected to the air pump (18); the distance sensor (23) is used to measure the distance from the sealing head and control the opening and closing of the air pump (18).

2. The special-shaped head welding device according to claim 1 is characterized in that: The upright column (9) comprises a bottom column (901), a third electric push rod (902) is arranged on the top of the bottom column (901), and the top of the third electric push rod (902) is fixedly connected to the bottom of the crossbeam (11).

3. The special-shaped head welding device according to claim 2 is characterized in that: Two groups of slide rails (10) are symmetrically arranged on the bottom plate (1), and the two groups of slide rails (10) are arranged longitudinally. The two groups of slide rails (10) are respectively slidably matched with the bottoms of the two groups of bottom columns (901).

4. The special-shaped head welding device according to claim 3 is characterized in that: A receiving groove (1505) is provided on one side of the positioning plate (1504) close to the electric suction cup (14); an elastic plate (1506) is rotatably provided at the top of the inner cavity of the receiving groove (1505); a supporting spring (1507) is provided between the elastic plate (1506) and the receiving groove (1505); one end of the supporting spring (1507) is connected to the elastic plate (1506), and the other end is connected to the groove wall of the receiving groove (1505).

5. The special-shaped head welding device according to claim 1, characterized in that: The pulley assembly (7) comprises a lower pulley bracket (701), wherein the lower pulley bracket (701) is fixedly arranged on the front side of the operating panel (6), a fixed pulley (702) is rotatably arranged on the other end of the lower pulley bracket (701), and a receiver (703) is arranged on the top of the lower pulley bracket (701); an elastic telescopic rod (704) is fixedly arranged on the front side of the longitudinal plate (602), an upper pulley bracket (705) is fixedly arranged on the other end of the elastic telescopic rod (704), a movable pulley (706) is rotatably arranged on the other end of the upper pulley bracket (705), and a laser transmitter (707) is arranged on the top of the upper pulley bracket (705).

6. The special-shaped head welding device according to claim 1, characterized in that: The welding assembly (8) includes a second electric push rod (801), the second electric push rod (801) is fixedly sleeved on the longitudinal plate (602), the end of the second electric push rod (801) close to the movable end of the lifting device is fixedly connected to a welding gun (802), a support frame is arranged on the top of the longitudinal plate (602), an electric welder (803) is arranged on the support frame, and the electric welder (803) is electrically connected to the welding gun (802).

7. The special-shaped head welding device according to claim 5, characterized in that: A mounting seat (19) is also fixedly provided on the front side of the operating panel (6); a cleaning roller (20) for cleaning the joint between the tank body and the end cap is rotatably connected to the top of the mounting seat (19); bristles are provided on the cleaning roller (20); a first transmission wheel for driving the cleaning roller (20) to rotate is provided at the bottom of the mounting seat (19); a second transmission wheel that rotates synchronously with the fixed pulley (702) is provided on the lower pulley bracket (701); and a same set of transmission belts (21) are sleeved between the first transmission wheel and the second transmission wheel.

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