Self-adaptive stabilizing device for sheet metal part welding

Abstract

The self-adaptive stabilizing device comprises a welding workbench, a first sheet metal part and a second sheet metal part and further comprises sheet metal part fixing devices, the sheet metal part fixing devices are evenly arranged on the welding workbench, and sliding grooves are evenly formed in the top end of the welding workbench in a penetrating mode; the bottom end of the welding workbench is fixedly connected with a supporting frame, the first sheet metal part is arranged at the top end of the welding workbench, the second sheet metal part is arranged on one side of the top end of the first sheet metal part, and the sheet metal part fixing device comprises a first fixing assembly and a second fixing assembly. Multiple fixing modes are achieved through the combination of the first fixing assembly and the second fixing assembly, the assemblies of the corresponding number can be selected for fixing according to the appearance and length of the sheet metal part, and the sheet metal part fixing device can adapt to sheet metal parts of different sizes and shapes.

Description

Technical Field

[0001] The invention relates to the field of sheet metal welding, in particular to an adaptive stabilizing device for sheet metal welding. Background Art

[0002] In the field of sheet metal processing and manufacturing, especially in the automotive, aerospace, and machinery manufacturing industries, the welding of sheet metal parts is a key link, and its quality directly affects the performance and safety of the final product. However, traditional sheet metal welding and fixing methods have many limitations.

[0003] Traditional sheet metal welding and fixation usually use simple fixtures or tooling. These fixtures are often designed for sheet metal parts of specific shapes and sizes and have poor versatility. When sheet metal parts of different shapes or sizes need to be welded, a large number of fixtures need to be replaced or the existing fixtures need to be complicatedly modified, which not only consumes a lot of time and labor costs, but also leads to low production efficiency. In addition, traditional fixing devices often cannot provide reliable fixing effects when dealing with sheet metal parts of some special shapes or positions, such as sheet metal parts tilted in the horizontal direction or sheet metal parts located inside other sheet metal parts. Therefore, an adaptive stabilization device for sheet metal welding is urgently needed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an adaptive stabilization device for sheet metal welding to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adaptive stabilizing device for sheet metal welding, comprising a welding workbench, a first sheet metal part and a second sheet metal part, and a sheet metal part fixing device, the sheet metal part fixing devices are evenly arranged on the welding workbench, the top of the welding workbench is evenly penetrated with slide grooves, the bottom end of the welding workbench is fixedly connected with a support frame, the first sheet metal part is arranged on the top of the welding workbench, the second sheet metal part is arranged on one side of the top of the first sheet metal part, the sheet metal part fixing device comprises a first fixing component and a second fixing component, the second fixing component is fixedly installed on the first fixing component;

[0006] The first fixing assembly comprises a first fixing plate and a bottom limiting plate, one end of the top end of the first fixing plate is fixedly connected with a clamping ring, the top end of the first fixing plate is located at the middle part of the bottom end of the clamping ring and is penetrated with a plug-in hole, two limiting sliding blocks are symmetrically fixedly connected on the inner side of the first fixing plate located at the inner side of the plug-in hole, a fastening ring is movably clamped on the inner side of the clamping ring, an anti-slip knob is fixedly connected to the top end of the fastening ring, an annular groove is provided on the outer side of the fastening ring, a limiting sliding plate is fixedly connected to the middle part of the top end of the bottom limiting plate, a threaded rod is fixedly connected to the middle part of the top end of the limiting sliding plate, and two limiting grooves are symmetrically provided on the outer side of the threaded rod;

[0007] The second fixing assembly includes a connecting piece, a second plug hole is penetrated at the top of the connecting piece, a lifting rod is movably inserted into the inner side of the second plug hole, a supporting plate is fixedly connected to the top of the lifting rod, a limiting shaft is fixedly connected to the top of the supporting plate, a length adjustment cylinder is rotatably connected to the limiting shaft, a first plug hole is penetrated on the length adjustment cylinder, a supporting cross bar is movably inserted into the inner side of the first plug hole, a push-pull handle is threadedly connected to one end of the supporting cross bar, the other end of the supporting cross bar is fixedly connected to the second fixing plate, and the second fixing plate is threadedly connected to the third fixing plate at one end of the supporting cross bar.

[0008] Preferably, metal spring sheets are evenly provided on the inner side of the snap ring, and upper snap grooves and lower snap grooves are evenly opened on the inner side of the snap ring, the upper snap grooves and the lower snap grooves are symmetrically arranged up and down, the top end of the metal spring sheet is movably inserted into the inner side of the upper snap groove, and the bottom end of the metal spring sheet is movably inserted into the inner side of the lower snap groove.

[0009] Preferably, the limiting slider is slidably connected to the inner side of the limiting groove, the inner side of the fastening ring is threadedly connected to the threaded rod, the bottom end of the fastening ring is contact-connected with the top end of the first fixing plate, the middle part of the metal spring sheet is arc-shaped, and one side of the arc-shaped protrusion of the metal spring sheet is clamped on the inner side of the annular groove.

[0010] Preferably, a limiting slot is provided on the outer side of the limiting shaft, the bottom end of the length adjustment cylinder is fixedly connected to a direction adjustment cylinder, the bottom end of the direction adjustment cylinder is provided with a plug-in slot, the outer side of the direction adjustment cylinder is threadedly connected to a third fastening bolt, the outer side of the direction adjustment cylinder is symmetrically threadedly connected to two limiting bolts, and the top end of the length adjustment cylinder is threadedly connected to a first fastening bolt.

[0011] Preferably, the connecting member is fixedly mounted on an end of the top end of the first fixing plate away from the clamping ring, and a second fastening bolt is threadedly connected to a middle portion of a side of the connecting member away from the first fixing plate.

[0012] Preferably, the third fastening bolt and the two limit bolts are evenly distributed on the outside of the direction adjustment cylinder, the limit shaft is rotatably connected to the inner side of the plug-in slot, the top and bottom ends of the threaded ends of the third fastening bolt and the limit bolt are respectively contacted and connected with the top and bottom ends of the inner side of the limit slot, the threaded end of the third fastening bolt is contacted and connected with the inner end of the limit slot, and the threaded end of the first fastening bolt is contacted and connected with the top of the supporting cross bar.

[0013] Preferably, the threaded end of the second fastening bolt is in contact with the outer side of the lifting rod.

[0014] Preferably, the top end of the bottom limiting plate is in contact with the bottom end of the welding workbench, the limiting sliding plate is slidably connected to the inner side of the slide groove, and the lifting rod is slidably connected to the inner side of the slide groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention realizes multiple fixing modes through the combination of the first fixing component and the second fixing component, and can select a corresponding number of components for fixing according to the shape and length of the sheet metal part, and can adapt to sheet metal parts of different sizes and shapes. The first fixing component can fix the sheet metal part placed flat on the welding workbench, and the sheet metal fixing device composed of the first fixing component and the second fixing component can fix the sheet metal part placed vertically, thereby improving the versatility and applicability of the device, reducing the restriction on sheet metal parts of specific sizes, and can be widely used in welding processing scenarios of various sheet metal parts;

[0017] Multi-angle and multi-position fixing capability: The sheet metal fixing device can not only fix the second sheet metal placed vertically, but also effectively fix the second sheet metal when it is in an inclined state in the horizontal direction or located at special positions such as the inner side of the top of the first sheet metal. By adjusting the direction adjustment cylinder, the supporting cross bar, the length adjustment cylinder and the position and angle of each fixing plate, the sheet metal can be accurately fixed in the required position, meeting the requirements for various welding angles and positions in the sheet metal welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the second state structure of the main body in the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the welding workbench in the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the sheet metal fixing device in the present invention;

[0022] Figure 5 This is a schematic diagram of the split structure of the first fixing component in the present invention;

[0023] Figure 6 It is a schematic diagram of the cutaway structure of the clamp ring in the present invention;

[0024] Figure 7 This is a schematic diagram of the split structure of the second fixing component in the present invention;

[0025] Figure 8 It is a partial structural schematic diagram of the limiting shaft and the length adjustment cylinder in the present invention.

[0026] In the figure: 1-welding workbench, 2-sheet metal fixing device, 3-first fixing assembly, 4-second fixing assembly, 5-support frame, 6-slideway, 7-first sheet metal, 8-second sheet metal, 9-first fixing plate, 10-clamping ring, 11-plug hole, 12-limiting slider, 13-fastening ring, 14-anti-slip knob, 15-annular groove, 16-bottom limiting plate, 17-limiting slide plate, 18-threaded rod, 19-limiting groove, 20-upper slot, 21-lower slot, 22 -metal spring, 23-lifting plug rod, 24-support plate, 25-limiting shaft, 26-length adjustment cylinder, 27-first plug hole, 28-first fastening bolt, 29-support cross bar, 30-push-pull handle, 31-second fixing plate, 32-third fixing plate, 33-adjusting knob, 34-connecting piece, 35-second plug hole, 36-second fastening bolt, 37-limiting slot, 38-direction adjustment cylinder, 39-plug slot, 40-third fastening bolt, 41-limiting bolt. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 5 and Figure 7, an embodiment provided by the present invention: an adaptive stabilizing device for sheet metal welding, comprising a welding workbench 1, a first sheet metal part 7 and a second sheet metal part 8, and a sheet metal fixing device 2, the sheet metal fixing device 2 is evenly arranged on the welding workbench 1, a slide groove 6 is evenly penetrated through the top of the welding workbench 1, a support frame 5 is fixedly connected to the bottom end of the welding workbench 1, the first sheet metal part 7 is arranged on the top of the welding workbench 1, the first sheet metal part 7 is a horizontally welded sheet metal part, the second sheet metal part 8 is arranged on one side of the top of the first sheet metal part 7, and the second sheet metal part 8 is a vertically welded sheet metal part, the sheet metal fixing device 2 comprises a first fixing component 3 and a second fixing component 4, the second fixing component 4 is fixedly installed on the first fixing component 3, according to the use situation, the first fixing component 3 can fix the first sheet metal part 7, and the sheet metal fixing device 2 composed of the first fixing component 3 and the second fixing component 4 can fix the second sheet metal part 8;

[0029] The first fixing assembly 3 includes a first fixing plate 9 and a bottom limiting plate 16, one end of the top of the first fixing plate 9 is fixedly connected with a snap ring 10, the top of the first fixing plate 9 is located in the middle of the bottom end of the snap ring 10 and is provided with a plug hole 11, two limiting sliders 12 are symmetrically fixedly connected to the inner side of the plug hole 11 on the first fixing plate 9, a fastening ring 13 is movably connected to the inner side of the snap ring 10, an anti-slip knob 14 is fixedly connected to the top of the fastening ring 13, an annular groove 15 is provided on the outer side of the fastening ring 13, and the bottom The middle part of the top of the limiting plate 16 is fixedly connected with the limiting slide plate 17, the top of the bottom limiting plate 16 is in contact with the bottom of the welding workbench 1, the limiting slide plate 17 is slidably connected to the inner side of the slide groove 6, and the slide groove 6 is used to limit the limiting slide plate 17 to limit the threaded rod 18, so that when the annular groove 15 is threadedly rotated on the threaded rod 18, the threaded rod 18 will not rotate accordingly, the middle part of the top of the limiting slide plate 17 is fixedly connected with the threaded rod 18, and two limiting grooves 19 are symmetrically provided on the outer side of the threaded rod 18;

[0030] The second fixing assembly 4 includes a connecting member 34, the top of which is penetrated by a second plug hole 35, the inner side of which is movably plugged with a lifting rod 23, the lifting rod 23 moves up and down inside the second plug hole 35, so as to adjust the height of the lifting rod 23, the top of the lifting rod 23 is fixedly connected to a support plate 24, the top of the support plate 24 is fixedly connected to a limit shaft 25, the limit shaft 25 is rotatably connected to a length adjustment cylinder 26, and the length adjustment cylinder 26 is penetrated by a first plug hole 27 A supporting cross bar 29 is movably inserted into the inner side of the first plug hole 27. The angle of the supporting cross bar 29 is adjusted by rotating the length adjustment tube 26 to adjust the optimal fixing angle of the second sheet metal component 8. A push-pull handle 30 is threadedly connected to one end of the supporting cross bar 29, and a second fixing plate 31 is fixedly connected to the other end of the supporting cross bar 29. The second fixing plate 31 is threadedly connected to a third fixing plate 32 at one end of the supporting cross bar 29. The second sheet metal component 8 is fixed by clamping the third fixing plate 32 and the second fixing plate 31.

[0031] See also Figure 6 The inner side of the snap ring 10 is evenly provided with metal springs 22, and the inner side of the snap ring 10 is evenly provided with an upper groove 20 and a lower groove 21, which are symmetrically arranged up and down. The top of the metal spring 22 is movably plugged into the inner side of the upper groove 20, and the bottom of the metal spring 22 is movably plugged into the inner side of the lower groove 21. The middle part of the metal spring 22 is designed in an arc shape, and one side of the arc-shaped protrusion of the metal spring 22 is clamped into the inner side of the annular groove 15. The clamping of the metal spring 22 facilitates the separation between the annular groove 15 and the snap ring 10. The anti-slip knob 14 is pulled upward by external force, and the anti-slip knob 14 drives the fastening ring 13 to move upward. The fastening ring 13 drives the annular groove 15 to move so that the inner side of the annular groove 15 squeezes the protrusion of the metal spring piece 22. The protrusion of the metal spring piece 22 is deformed by force so that the top end of the metal spring piece 22 stretches upward, and the bottom end of the metal spring piece 22 stretches downward, until the fastening ring 13 is completely separated from the inside of the clamping ring 10, the metal spring piece 22 loses pressure and rebounds to its initial state. At this time, the fastening ring 13 and the clamping ring 10 are separated, which is convenient for disassembly and maintenance.

[0032] See also Figure 5 The limit slider 12 is slidably connected to the inner side of the limit groove 19, and the threaded rod 18 is limited by the limit slider 12. The inner side of the fastening ring 13 is threadedly connected to the threaded rod 18. The bottom end of the fastening ring 13 is in contact with the top of the first fixed plate 9. The bottom end of the fastening ring 13 is close to the top of the first fixed plate 9. The bottom end of the first fixed plate 9 is close to the top of the welding workbench 1. The top of the bottom limit plate 16 is close to the bottom end of the welding workbench 1. At this time, the first fixed assembly 3 is fixed on the welding workbench 1.

[0033] See also Figure 8A limiting slot 37 is provided on the outer side of the limiting shaft 25, a direction adjusting cylinder 38 is fixedly connected to the bottom end of the length adjusting cylinder 26, a plug-in slot 39 is provided on the bottom end of the direction adjusting cylinder 38, a third fastening bolt 40 is threadedly connected to the outer side of the direction adjusting cylinder 38, two limiting bolts 41 are symmetrically threadedly connected to the outer side of the direction adjusting cylinder 38, a first fastening bolt 28 is threadedly connected to the top end of the length adjusting cylinder 26, the third fastening bolt 40 and the two limiting bolts 41 are evenly distributed on the outer side of the direction adjusting cylinder 38, the limiting shaft 25 is rotatably connected to the inner side of the plug-in slot 39, the top and bottom ends of the threaded ends of the third fastening bolt 40 and the limiting bolt 41 are respectively contacted and connected with the top and bottom ends of the inner side of the limiting slot 37, and the third fastening bolt 40 and The threaded end of the limit bolt 41 applies a limit to strengthen the fixation of the direction adjustment cylinder 38, thereby strengthening the stability of the direction adjustment cylinder 38 on the limit shaft 25 and preventing the direction adjustment cylinder 38 from tilting. The threaded end of the third fastening bolt 40 is in contact and connected with the inner end of the limit slot 37. The direction adjustment cylinder 38 is fixed to the limit shaft 25 by the threaded end of the third fastening bolt 40 tightly against the inner end of the limit slot 37. The threaded end of the first fastening bolt 28 is in contact and connected with the top end of the support cross bar 29. The support cross bar 29 slides inside the first plug-in hole 27 to adjust the length, so that the second fixing plate 31 and the third fixing plate 32 are located on both sides of the second sheet metal 8, and the support cross bar 29 is fixed by the threaded end of the first fastening bolt 28 tightly against the top end of the support cross bar 29.

[0034] See also Figure 4 The connecting piece 34 is fixedly installed on the end of the top of the first fixing plate 9 away from the retaining ring 10, and the middle part of the side of the connecting piece 34 away from the first fixing plate 9 is threadedly connected with a second fastening bolt 36, and the threaded end of the second fastening bolt 36 is in contact with the outer side of the lifting rod 23, and the lifting rod 23 is slidably connected to the inner side of the slide groove 6.

[0035] Working principle: During use, first install the first fixing component 3 on one side of the top of the welding workbench 1, and install the sheet metal fixing device 2 on the other side of the top of the welding workbench 1, and then place the first sheet metal part 7 flat on the top of the welding workbench 1, and then select the corresponding number of first fixing components 3 and second fixing components 4 according to the shape and length of the first sheet metal part 7, and then twist the anti-slip knob 14 to move upward by external force, and the rotation of the anti-slip knob 14 drives the fastening ring 13 to rotate on the inner side of the clamping ring 10. Since the limiting slider 12 is slidably connected to the inner side of the limiting groove 19, the metal spring 22 inside the clamping ring 10 is clamped on the inner side of the annular groove 15, so the movement of the anti-slip knob 14 drives the clamping ring 10 and the first fixing plate 9 to move upward to the first fixing plate 9. The bottom end of a fixing plate 9 moves to the top of the first sheet metal part 7, and then the first fixing plate 9 is pushed close to the first sheet metal part 7 until the bottom end of the first fixing plate 9 is located at the top end of the first sheet metal part 7, and then the anti-slip knob 14 is twisted downward by external force, and the movement of the anti-slip knob 14 drives the first fixing plate 9 to move downward until the bottom end of the first fixing plate 9 is close to the top end of the first sheet metal part 7, and the top end of the bottom limit plate 16 is close to the bottom end of the welding workbench 1, and the first fixing component 3 located on the same side of the first sheet metal part 7 is adjusted and fixed to the first sheet metal part 7 in turn. At this time, the first sheet metal part 7 is fixed, and then the second sheet metal part 8 is fixed, and the second sheet metal part 8 is placed on the top end of the first sheet metal part 7 away from the side where the first fixing component 3 is fixed by external force;

[0036] Then, the sheet metal fixing device 2 located on the side of the first sheet metal part 7 close to the second sheet metal part 8 is adjusted to fix the second sheet metal part 8, and the adjusting knob 33 is turned away from the second fixing plate 31 by external force. The rotation of the adjusting knob 33 drives the third fixing plate 32 to rotate away from the second fixing plate 31, and then the second fastening bolt 36 is turned away from the connecting member 34 by external force, so that the threaded end of the second fastening bolt 36 is separated from the outside of the lifting rod 23, and then the lifting rod 23 is pulled upward by external force to the bottom of the second fixing plate 31. The end is higher than the top of the second sheet metal part 8, and then the anti-slip knob 14 is turned to move upward to loosen the bottom end of the first fixing plate 9 and the top of the welding workbench 1, and then the first fixing plate 9 is pushed close to the second sheet metal part 8 by external force, and the movement of the first fixing plate 9 drives the second fixing assembly 4 to move, until the second fixing assembly 4 moves to the second sheet metal part 8 and is located between the second fixing plate 31 and the third fixing plate 32, and then the lifting rod 23 is moved downward by external force, and the movement of the lifting rod 23 drives the second fixing plate 31 to move downward, The second sheet metal part 8 is stuck between the second fixing plate 31 and the third fixing plate 32, and then the second fastening bolt 36 is screwed close to the connecting piece 34 until the threaded end of the second fastening bolt 36 is close to the outer side of the lifting plug rod 23 to fix the lifting plug rod 23, and then the first fixing plate 9 is pushed close to the second sheet metal part 8 until the side of the second fixing plate 31 close to the third fixing plate 32 is close to the outer side of the second sheet metal part 8, and the second sheet metal part 8 and the first sheet metal part 7 are in a vertical state, and the outer side of the second sheet metal part 8 and the outer side of the first sheet metal part 7 are kept Then, turn the anti-skid knob 14 to move downward until the bottom end of the first fixing plate 9 is close to the top of the welding workbench 1, and the top end of the bottom limit plate 16 is close to the bottom end of the welding workbench 1, and then turn the adjusting knob 33 by external force to drive the third fixing plate 32 to rotate close to the second sheet metal part 8, until the side of the third fixing plate 32 close to the second fixing plate 31 is close to the inner side of the second sheet metal part 8, at this time, the first fixing point of the second sheet metal part 8 is completed, and then adjust and fix the remaining sheet metal fixing devices 2 in turn to fix the second sheet metal part 8;

[0037] When the second sheet metal part 8 is in an inclined state in the horizontal direction, the third fastening bolt 40 is twisted away from the direction adjustment cylinder 38 by external force, so that the threaded end of the third fastening bolt 40 is disengaged from the inner end of the limiting slot 37, and then the length adjustment cylinder 26 is rotated by external force until the support cross bar 29 and the inclined edge of the second sheet metal part 8 are in a vertical state, and after the inclined edge of the second sheet metal part 8 is fixed by the second fixing plate 31 and the third fixing plate 32, the third fastening bolt 40 is twisted close to the direction adjustment cylinder 38 by external force until the threaded end of the third fastening bolt 40 is close to the inner end of the limiting slot 37. When the second sheet metal part 8 is located on the inner side of the top of the first sheet metal part 7, the first fixing plate 9 cannot approach When the second sheet metal part 8 is tightened, the first fastening bolt 28 is screwed upward by external force until the bottom end of the first fastening bolt 28 is separated from the top end of the supporting cross bar 29, and then the push-pull handle 30 is pushed close to the length adjustment tube 26 by external force. The movement of the push-pull handle 30 pushes the supporting cross bar 29 to slide on the inner side of the first plug hole 27, and at the same time drives the second fixing plate 31 and the third fixing plate 32 to move to both sides of the second sheet metal part 8. After the two sides of the second sheet metal part 8 are fixed by the second fixing plate 31 and the third fixing plate 32, the first fastening bolt 28 is screwed close to the length adjustment tube 26 by external force until the threaded end of the first fastening bolt 28 is close to the top end of the supporting cross bar 29 to fix the supporting cross bar 29.

[0038] 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 adaptive stabilizing device for sheet metal welding, comprising a welding workbench (1), a first sheet metal part (7) and a second sheet metal part (8), characterized in that: It also includes a sheet metal fixing device (2), the sheet metal fixing device (2) is evenly arranged on the welding workbench (1), the top of the welding workbench (1) is evenly penetrated with a slide groove (6), the bottom of the welding workbench (1) is fixedly connected with a support frame (5), the first sheet metal part (7) is arranged on the top of the welding workbench (1), the second sheet metal part (8) is arranged on one side of the top of the first sheet metal part (7), and the sheet metal fixing device (2) includes a first fixing component (3) and a second fixing component (4), and the second fixing component (4) is fixedly installed on the first fixing component (3); The first fixing assembly (3) comprises a first fixing plate (9) and a bottom limiting plate (16), one end of the top end of the first fixing plate (9) is fixedly connected with a clamping ring (10), the top end of the first fixing plate (9) is located in the middle of the bottom end of the clamping ring (10) and is provided with a plug-in hole (11), two limiting sliding blocks (12) are symmetrically fixedly connected to the first fixing plate (9) and are located on the inner side of the plug-in hole (11), a fastening ring (13) is movably clamped on the inner side of the clamping ring (10), the top end of the fastening ring (13) is fixedly connected with an anti-slip knob (14), an annular groove (15) is provided on the outer side of the fastening ring (13), a limiting sliding plate (17) is fixedly connected to the middle of the top end of the bottom limiting plate (16), a threaded rod (18) is fixedly connected to the middle of the top end of the limiting sliding plate (17), and two limiting grooves (19) are symmetrically provided on the outer side of the threaded rod (18); The second fixing assembly (4) comprises a connecting piece (34), a second plug hole (35) is formed through the top of the connecting piece (34), a lifting rod (23) is movably inserted into the inner side of the second plug hole (35), a supporting plate (24) is fixedly connected to the top of the lifting rod (23), a limiting shaft (25) is fixedly connected to the top of the supporting plate (24), a length adjustment cylinder (26) is rotatably connected to the limiting shaft (25), a first plug hole (27) is formed through the length adjustment cylinder (26), a supporting cross bar (29) is movably inserted into the inner side of the first plug hole (27), one end of the supporting cross bar (29) is threadedly connected to a push-pull handle (30), the other end of the supporting cross bar (29) is fixedly connected to a second fixing plate (31), and the second fixing plate (31) is threadedly connected to a third fixing plate (32) on the one end of the supporting cross bar (29).

2. The self-adaptive stabilizing device for sheet metal welding according to claim 1, characterized in that: The inner side of the clamping ring (10) is evenly provided with metal springs (22), and the inner side of the clamping ring (10) is evenly provided with an upper clamping groove (20) and a lower clamping groove (21), the upper clamping groove (20) and the lower clamping groove (21) are symmetrically arranged in an upper and lower manner, the top end of the metal spring (22) is movably inserted into the inner side of the upper clamping groove (20), and the bottom end of the metal spring (22) is movably inserted into the inner side of the lower clamping groove (21).

3. The self-adaptive stabilization device for sheet metal welding according to claim 2, characterized in that: The limiting slider (12) is slidably connected to the inner side of the limiting groove (19), the inner side of the fastening ring (13) is threadedly connected to the threaded rod (18), the bottom end of the fastening ring (13) is in contact with the top end of the first fixing plate (9), the middle part of the metal spring sheet (22) is designed in an arc shape, and one side of the arc-shaped protrusion of the metal spring sheet (22) is clamped on the inner side of the annular groove (15).

4. The self-adaptive stabilization device for sheet metal welding according to claim 1, characterized in that: The outer side of the limit shaft (25) is provided with a limit slot (37); the bottom end of the length adjustment cylinder (26) is fixedly connected with a direction adjustment cylinder (38); the bottom end of the direction adjustment cylinder (38) is provided with a plug-in slot (39); the outer side of the direction adjustment cylinder (38) is threadedly connected with a third fastening bolt (40); the outer side of the direction adjustment cylinder (38) is symmetrically threadedly connected with two limit bolts (41); and the top end of the length adjustment cylinder (26) is threadedly connected with a first fastening bolt (28).

5. The self-adaptive stabilization device for sheet metal welding according to claim 1, characterized in that: The connecting member (34) is fixedly mounted on an end of the top end of the first fixing plate (9) away from the clamping ring (10), and a second fastening bolt (36) is threadedly connected to the middle part of a side of the connecting member (34) away from the first fixing plate (9).

6. The self-adaptive stabilization device for sheet metal welding according to claim 4, characterized in that: The third fastening bolt (40) and the two limiting bolts (41) are evenly distributed on the outer side of the direction adjustment cylinder (38), and the limiting shaft (25) is rotatably connected to the inner side of the plug-in slot (39). The top and bottom ends of the threaded ends of the third fastening bolt (40) and the limiting bolt (41) are respectively in contact with the top and bottom ends of the inner side of the limiting slot (37). The threaded end of the third fastening bolt (40) is in contact with the inner side end of the limiting slot (37), and the threaded end of the first fastening bolt (28) is in contact with the top of the supporting cross bar (29).

7. The self-adaptive stabilization device for sheet metal welding according to claim 5, characterized in that: The threaded end of the second fastening bolt (36) is in contact with the outer side of the lifting rod (23).

8. The self-adaptive stabilization device for sheet metal welding according to claim 1, characterized in that: The top end of the bottom limiting plate (16) is in contact with the bottom end of the welding workbench (1), the limiting sliding plate (17) is slidably connected to the inner side of the slide groove (6), and the lifting rod (23) is slidably connected to the inner side of the slide groove (6).

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