A convenient display stand joint welding device

Abstract

The present invention provides a convenient display stand joint welding device, which relates to the technical field of welding devices. The convenient display stand joint welding device comprises a base, a plurality of supporting legs fixedly arranged at the bottom of the base, and a welding gun movably arranged above the base, and a limiting mechanism for clamping a workpiece to be welded is arranged on the top of the base. By arranging a limiting assembly above the base, the parts to be welded of the display stand can be clamped and fixed, avoiding the problem of deviation caused by displacement of the parts to be welded of the display stand during welding, preventing the subsequent use from being affected, thereby ensuring the subsequent use of the display stand.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a portable display stand joint welding device. Background Art

[0002] Portable display racks are a kind of display tool that is easy to carry and assemble, and are often used in exhibitions, promotions, press conferences, etc. According to different designs and requirements, portable display racks have various types and materials.

[0003] When producing display racks, the display racks will be divided into multiple parts for production, and then the multiple parts will be assembled. Welding equipment may be needed to weld at the joints of the multiple parts. At present, in order to save labor, welding is generally done by one worker. During welding, the worker needs to hold the welding gun in one hand and take protective equipment with the other hand, resulting in the two parts of the display rack being merely placed without being fixed. This may cause deviations during welding, thus affecting the subsequent display and use of the display rack. For this reason, we have developed a new type of convenient display rack joint welding equipment. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a convenient display stand joint welding device, which solves the problem that in order to save labor, welding is generally performed by one worker, and the worker is required to hold the welding gun in one hand and hold protective equipment with the other hand during welding, resulting in the two parts of the display stand being merely placed but not fixed, which may lead to deviation during welding.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented by the following technical solutions: comprising a base, a plurality of support legs fixedly arranged at the bottom of the base, and a welding gun movably arranged above the base, wherein a limiting mechanism for clamping a workpiece to be welded is arranged at the top of the base;

[0008] The limiting mechanism includes a column fixedly arranged on the left side of the top of the base, and a third sliding seat is slidably arranged on the surface of the column, and a connecting column is fixedly arranged on the right side of the third sliding seat, and a first placing plate is fixedly arranged on the right side of the connecting column, and a limiting toothed plate is movably arranged on the left side of the column, and a plurality of limiting tooth blocks cooperating with the limiting toothed plate are fixedly arranged on the left side of the third sliding seat, and a first threaded rod is rotatably arranged on the right bottom of the limiting toothed plate, and the first threaded rod is threadedly connected to the column, and a second sliding rod is fixedly arranged on the right top of the limiting toothed plate, and the second sliding rod is slidably connected to the column, and a hand wheel coaxial with the first threaded rod is rotatably arranged on the left bottom of the limiting toothed plate;

[0009] A vertical plate is arranged on the upper right side of the base, a through slot is opened inside the vertical plate, the through slot runs through the left and right sides of the vertical plate, a clamping seat is fixedly arranged on the upper and lower sides of the through slot, two clamping plates are movably arranged on the left side of the clamping seat, a second connecting plate is fixedly arranged on the opposite sides of the two clamping plates at the same level, a fourth sliding rod is fixedly arranged on the right side of the second connecting plate, the fourth sliding rod is slidably connected to the clamping seat, a push plate is slidably arranged on the inner side of the clamping seat, two movable frames are slidably arranged on the surface of the push plate, a second movable ring is rotatably arranged on the top of the movable frame, and a top rotation device of the fourth sliding rod A third movable ring is provided, and the third movable ring is fixedly connected to the second movable ring by a second connecting rod, a fourth movable ring is rotatably provided at the bottom of the movable frame, a first movable ring is rotatably provided at the bottom of the clamping seat, the first movable ring and the fourth movable ring are fixedly connected by a second connecting rod, a cross plate is fixedly provided in the through groove, a third threaded rod is rotatably provided on the right side of the cross plate, a threaded plate is threadedly connected to the surface of the third threaded rod, two push rods are fixedly provided on the left side of the threaded plate, the left side of the push rod is fixedly connected to the push plate, and a second knob is fixedly provided on the right end of the third threaded rod.

[0010] Through the above technical solution, by setting a limit assembly above the base, the parts to be welded on the display frame can be clamped and fixed, avoiding the problem of deviation caused by displacement of the parts to be welded on the display frame during welding, preventing the subsequent use from being affected, thereby ensuring the subsequent use of the display frame.

[0011] Preferably, a pressure plate is movably provided above the first placing plate, a fourth guide rod is fixedly provided on the top of the connecting column, a slip ring is slidably provided on the surface of the fourth guide rod, the right side of the slip ring is fixedly connected to the left side of the pressure plate, a top block is fixedly provided on the top of the fourth guide rod, the bottom of the top block is connected to the top of the slip ring through a first return spring, and a handle is fixedly provided on the top of the pressure plate.

[0012] Preferably, a third sliding rod is slidably arranged inside the top block, and both ends of the third sliding rod pass through the left and right sides of the top block. A first connecting plate is fixedly arranged on the left side of the third sliding rod, and a U-shaped limiting plate is fixedly arranged on the right bottom end of the first connecting plate. A limiting groove matching the U-shaped limiting plate is opened on the surface of the slip ring.

[0013] Preferably, a first guide seat is fixedly provided on the right side of the top of the pressure plate, a first guide rod is fixedly provided on the top of the first guide seat, a second slide seat is slidably provided on the surface of the first guide rod, a second guide rod is fixedly provided on the top of the second slide seat, and the first slide seat is slidably provided on the surface of the second guide rod, the right side of the first slide seat is fixedly connected to the left side of the welding gun through a first connecting rod, a second guide seat is fixedly provided on the top of the pressure plate, a third guide rod is fixedly provided on the top of the second guide seat, the first slide rod is slidably provided on the surface of the third guide rod, the left side of the first slide rod is connected to the right end of the third guide rod through a second return spring, a limiting plate is fixedly provided on the top of the first slide rod, a side plate is fixedly provided on the left side of the first slide seat, and abutment groove matching the limiting plate is opened on the left side of the side plate.

[0014] Through the above technical solution, by movably connecting the welding gun to the right end of the pressure plate, there is no need to hold the welding gun during welding, and only the welding rod needs to be taken, which saves time and effort and improves the work efficiency of workers.

[0015] Preferably, a mounting seat is fixedly provided on the top right side of the base, a slide plate is slidably provided on the top of the mounting seat, a plurality of fifth guide rods are fixedly provided on the top of the slide plate, the fifth guide rods are slidably connected to the vertical plate, a latch is inserted on the right side of the mounting seat, a pin hole for matching the latch is provided on the right side of the slide plate, a plurality of positioning holes for matching the latch are provided on the right side of the mounting seat, a connecting ring is fixedly provided on the right side of the latch and the right side of the base, and the two connecting rings are connected by a connecting rope.

[0016] Preferably, a second threaded rod is fixedly provided on the top of the skateboard, a placement groove for placing the top end of the second threaded rod is opened at the bottom of the vertical plate, a threaded ring is threadedly connected to the surface of the second threaded rod, and a first knob is fixedly provided on the outer side of the threaded ring.

[0017] Preferably, a second placement plate is fixedly provided on the left side of the slide plate, and a groove is formed on the top of the second placement plate.

[0018] Preferably, anti-skid pads are fixedly provided on the bottom of the pressing plate and the top of the first placement plate, and the material of the anti-skid pads is specifically rubber material.

[0019] Preferably, a top plate is fixedly provided on the top of the second guide rod, and magnets that cooperate with each other are fixedly provided on the bottom of the top plate and the top of the side plate.

[0020] (III) Beneficial effects

[0021] The present invention provides a convenient display stand joint welding device, which has the following beneficial effects:

[0022] 1. This convenient display stand joint welding equipment can clamp and fix the parts to be welded on the display stand by setting a limit component above the base, avoiding the problem of deviation caused by displacement of the parts to be welded on the display stand during welding, preventing the subsequent use from being affected, thereby ensuring the subsequent use of the display stand.

[0023] 2. This kind of convenient display stand joint welding equipment movably connects the welding gun with the right end of the pressure plate. When welding, there is no need to hold the welding gun, only the welding rod needs to be taken, which saves time and effort and improves the work efficiency of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a diagram showing the appearance of the present invention;

[0025] Figure 2 This is a diagram showing the left side portion of the limiting mechanism in the present invention;

[0026] Figure 3 This is a display diagram of the first placement board in the present invention;

[0027] Figure 4 It is a display diagram of the pressure plate in the present invention;

[0028] Figure 5 This is a display diagram of the limiting plate in the present invention;

[0029] Figure 6 This is a diagram showing the right side portion of the limiting mechanism of the present invention;

[0030] Figure 7 This is a diagram showing the mounting base of the present invention;

[0031] Figure 8 This is a display diagram of the vertical board in the present invention;

[0032] Fig. 9 This is a diagram showing the threaded plate of the present invention;

[0033] Fig.10 This is a diagram showing the clamping seat of the present invention;

[0034] Fig.11 This is a diagram showing the connecting column in the present invention;

[0035] Fig.12 This is a diagram showing the pillars in the present invention;

[0036] Fig.13 This is a diagram showing the latch of the present invention;

[0037] Fig.14 This is a display diagram of the second guide seat in the present invention.

[0038] Among them, 1, base; 2, welding gun; 3, limit mechanism; 11, support leg; 12, connecting ring; 21, first guide seat; 22, second guide seat; 23, first slide seat; 31, column; 32, first placement plate; 33, mounting seat; 34, vertical plate; 35, clamping seat; 211, first guide rod; 212, second slide seat; 213, second guide rod; 214, top plate; 221, third guide rod; 222, limit plate; 223, baffle; 224, observation window; 225, first slide rod; 231, side plate; 232, magnet; 233, first connecting rod; 311, third slide seat; 312, limit tooth plate; 313, hand wheel; 314, first threaded rod; 315, limit tooth block; 316, second slide rod; 320, handle; 321, pressure plate; 32 2. Anti-skid pad; 323. Connecting column; 324. Fourth guide rod; 325. Slip ring; 326. Top block; 327. Third slide rod; 328. First connecting plate; 329. U-shaped limit plate; 331. Slide plate; 332. Second threaded rod; 333. Threaded ring; 334. First knob; 335. Second placement plate; 336. Fifth guide rod; 337. Positioning hole; 338. Latch; 341. Cross plate; 342. Threaded plate; 343. Second knob; 344. Third threaded rod; 345. Push rod; 350. First movable ring; 351. Clamp; 352. Second connecting plate; 353. Fourth slide rod; 354. Push plate; 355. Movable frame; 356. Second movable ring; 357. Third movable ring; 358. Second connecting rod; 359. Fourth movable ring. DETAILED DESCRIPTION

[0039] 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.

[0040] Example:

[0041] like Figure 1-Figure 14 As shown, the embodiment of the present invention provides: comprising a base 1, a plurality of supporting legs 11 fixedly arranged at the bottom of the base 1, and a welding gun 2 movably arranged above the base 1, and a limiting mechanism 3 for clamping a workpiece to be welded is arranged at the top of the base 1;

[0042] The limiting mechanism 3 includes a column 31 fixedly arranged on the left side of the top of the base 1, a third slide seat 311 is slidably arranged on the surface of the column 31, a connecting column 323 is fixedly arranged on the right side of the third slide seat 311, a first placement plate 32 is fixedly arranged on the right side of the connecting column 323, a limiting tooth plate 312 is movably arranged on the left side of the column 31, a plurality of limiting tooth blocks 315 cooperating with the limiting tooth plate 312 are fixedly arranged on the left side of the third slide seat 311, a first threaded rod 314 is rotatably arranged on the right bottom of the limiting tooth plate 312, the first threaded rod 314 is threadedly connected to the column 31, a second slide rod 316 is fixedly arranged on the right top of the limiting tooth plate 312, the second slide rod 316 is slidably connected to the column 31, and a hand wheel 313 coaxial with the first threaded rod 314 is rotatably arranged on the left bottom of the limiting tooth plate 312;

[0043] A vertical plate 34 is provided on the upper right side of the base 1, and a through slot is provided inside the vertical plate 34, which runs through the left and right sides of the vertical plate 34, and a clamping seat 35 is fixedly provided on the upper and lower sides in the through slot, and two clamping plates 351 are movably provided on the left side of the clamping seat 35, and a second connecting plate 352 is fixedly provided on the opposite sides of the two clamping plates 351 at the same level, and a fourth sliding rod 353 is fixedly provided on the right side of the second connecting plate 352, and the fourth sliding rod 353 is slidably connected to the clamping seat 35, and a push plate 354 is slidably provided on the inner side of the clamping seat 35, and two movable frames 355 are slidably provided on the surface of the push plate 354, and a second movable ring 356 is rotatably provided on the top of the movable frame 355, and a third movable ring 356 is rotatably provided on the top of the fourth sliding rod 353 7. The third movable ring 357 is fixedly connected to the second movable ring 356 through the second connecting rod 358, the bottom of the movable frame 355 is rotatably provided with a fourth movable ring 359, the bottom of the clamping seat 35 is rotatably provided with a first movable ring 350, the first movable ring 350 and the fourth movable ring 359 are fixedly connected through the second connecting rod 358, a cross plate 341 is fixedly provided in the through groove, a third threaded rod 344 is rotatably provided on the right side of the cross plate 341, a threaded plate 342 is threadedly connected to the surface of the third threaded rod 344, two push rods 345 are fixedly provided on the left side of the threaded plate 342, the left side of the push rod 345 is fixedly connected to the push plate 354, and the right end of the third threaded rod 344 is fixedly provided with a second knob 343.

[0044] When welding is required at the joints of the display rack, firstly, the parts of the display rack to be spliced ​​are taken, including the display columns and the display boards of the display rack, and the display columns are first placed between the multiple pairs of clamping plates 351, and the second knob 343 is further rotated to drive the third threaded rod 344 to rotate, thereby driving the threaded plate 342 to move to the left, thereby driving the two push rods 345 to move to the left, thereby driving the movable frame 355 to move, thereby driving the second movable ring 356 to move, thereby driving the second connecting rod 358 used to connect the second movable ring 356 and the third movable ring 357 to move, thereby driving the third movable ring 357 to move, thereby driving the fourth sliding rod 353 to move, thereby driving the second connecting plate 352 to move, thereby driving the clamping plate 351 to move, until passing through the two clamping plates. The plate 351 clamps the display column, and the display board is placed on the top of the first placement plate 32. The third slide seat 311 is further moved to move, thereby driving the connecting column 323 to move, and then driving the display board to move until the display board is moved to a suitable height. At this time, the hand wheel 313 is rotated to drive the first threaded rod 314 to rotate, thereby driving the limiting tooth plate 312 to move to the right until the limiting tooth plate 312 contacts the limiting tooth block 315 on the left side of the third slide seat 311, and the limiting tooth block 315 cooperates with the limiting tooth plate 312. At this time, the limiting of the third slide seat 311 is completed, and then the height limit of the display board is completed. At this time, the display board is moved on the top of the first placement plate 32 until the display board and the display column splicing are in contact with each other, so that the splicing can be welded at this time.

[0045] A pressure plate 321 is movably provided above the first placement plate 32, a fourth guide rod 324 is fixedly provided on the top of the connecting column 323, a slip ring 325 is slidably provided on the surface of the fourth guide rod 324, the right side of the slip ring 325 is fixedly connected to the left side of the pressure plate 321, a top block 326 is fixedly provided on the top of the fourth guide rod 324, the bottom of the top block 326 is connected to the top of the slip ring 325 through a first return spring, and a handle 320 is fixedly provided on the top of the pressure plate 321.

[0046] A third slide bar 327 is slidably arranged inside the top block 326, and both ends of the third slide bar 327 pass through the left and right sides of the top block 326. A first connecting plate 328 is fixedly arranged on the left side of the third slide bar 327, and a U-shaped limiting plate 329 is fixedly arranged on the right bottom end of the first connecting plate 328. A limiting groove matching the U-shaped limiting plate 329 is opened on the surface of the slip ring 325.

[0047] When the display board and the display column are in contact with each other at the joint, the U-shaped limit plate 329 slides to the left, thereby losing the limit on the slip ring 325, and then the slip ring 325 is driven to move downward through the first return spring, and then the pressure plate 321 is driven to move downward, and then the display board is pressed by the pressure plate 321 to prevent it from moving during welding.

[0048] A first guide seat 21 is fixedly provided on the right side of the top of the pressing plate 321, a first guide rod 211 is fixedly provided on the top of the first guide seat 21, a second slide seat 212 is slidably provided on the surface of the first guide rod 211, a second guide rod 213 is fixedly provided on the top of the second slide seat 212, a first slide seat 23 is slidably provided on the surface of the second guide rod 213, the right side of the first slide seat 23 is fixedly connected to the left side of the welding gun 2 through a first connecting rod 233, a second guide seat 22 is fixedly provided on the top of the pressing plate 321, a third guide rod 221 is fixedly provided on the top of the second guide seat 22, a first slide rod 225 is slidably provided on the surface of the third guide rod 221, the left side of the first slide rod 225 is connected to the right end of the third guide rod 221 through a second return spring, a limiting plate 222 is fixedly provided on the top of the first slide rod 225, a side plate 231 is fixedly provided on the left side of the first slide seat 23, and a contact groove matching the limiting plate 222 is provided on the left side of the side plate 231.

[0049] During welding, first move the second slide 212, which in turn drives the second guide rod 213 to move, which in turn drives the first slide 23 to move, which in turn drives the first connecting rod 233 to move, and then drives the welding gun 2 to move, until the bottom end of the welding gun 2 moves to the top of the joint. At this time, the movement of the welding gun 2 is completed, and the worker only needs to support the first slide 23 with one hand and hold the welding rod with the other hand.

[0050] A mounting seat 33 is fixedly provided on the top right side of the base 1, a slide plate 331 is slidably provided on the top of the mounting seat 33, a plurality of fifth guide rods 336 are fixedly provided on the top of the slide plate 331, the fifth guide rods 336 are slidably connected to the vertical plate 34, a latch 338 is inserted on the right side of the mounting seat 33, a pin hole for matching the latch 338 is provided on the right side of the slide plate 331, a plurality of positioning holes 337 for matching the latch 338 are provided on the right side of the mounting seat 33, a connecting ring 12 is fixedly provided on the right side of the latch 338 and the right side of the base 1, and the two connecting rings 12 are connected by a connecting rope.

[0051] A second threaded rod 332 is fixedly provided on the top of the slide plate 331 , a placement groove for placing the top of the second threaded rod 332 is opened at the bottom of the vertical plate 34 , a threaded ring 333 is threadedly connected to the surface of the second threaded rod 332 , and a first knob 334 is fixedly provided on the outer side of the threaded ring 333 .

[0052] A second placement plate 335 is fixedly disposed on the left side of the slide plate 331 , and a groove is formed on the top of the second placement plate 335 .

[0053] The bottom of the pressing plate 321 and the top of the first placement plate 32 are both fixedly provided with anti-skid pads 322 , and the material of the anti-skid pads 322 is specifically rubber material.

[0054] A top plate 214 is fixedly disposed on the top of the second guide rod 213 , and magnets 232 that cooperate with each other are fixedly disposed on the bottom of the top plate 214 and the top of the side plate 231 .

[0055] Working principle: When it is necessary to weld the joints of the display rack, first take the parts of the display rack to be spliced, including the display column and the display board of the display rack, first place the display column between the multiple pairs of clamping plates 351, further rotate the second knob 343, thereby driving the third threaded rod 344 to rotate, thereby driving the threaded plate 342 to move to the left, thereby driving the two push rods 345 to move to the left, thereby driving the movable frame 355 to move, thereby driving the second movable ring 356 to move, thereby driving the second connecting rod 358 used to connect the second movable ring 356 and the third movable ring 357 to move, thereby driving the third movable ring 357 to move, thereby driving the fourth sliding rod 353 to move, thereby driving the second connecting plate 352 to move, thereby driving the clamping plate 351 to move, until the display column is clamped by the two clamping plates 351, at this time, place the display board on the top of the first placement plate 32, further move the third sliding seat 311 to move, and then The connecting column 323 is driven to move, thereby driving the display board to move until the display board is moved to a suitable height. At this time, the hand wheel 313 is rotated, thereby driving the first threaded rod 314 to rotate, thereby driving the limiting tooth plate 312 to move to the right until the limiting tooth plate 312 contacts the limiting tooth block 315 on the left side of the third slide seat 311, and the limiting tooth block 315 cooperates with the limiting tooth plate 312. At this time, the third slide seat 311 is limited, thereby completing the height limit of the display board. At this time, the display board is moved on the top of the first placement plate 32 until the display board and the display column splicing are in contact with each other. When the display board and the display column splicing are in contact with each other, the U-shaped limiting plate 329 is slid to the left at this time, thereby losing the limit on the slip ring 325, and then the slip ring 325 is driven to move downward by the first return spring, thereby driving the pressing plate 321 to move downward, and then the display board is pressed by the pressing plate 321 to prevent it from moving during welding, so that the splicing can be welded at this time;

[0056] During welding, first move the second slide 212, which in turn drives the second guide rod 213 to move, which in turn drives the first slide 23 to move, which in turn drives the first connecting rod 233 to move, and then drives the welding gun 2 to move, until the bottom end of the welding gun 2 moves to the top of the joint. At this time, the movement of the welding gun 2 is completed, and the worker only needs to support the first slide 23 with one hand and hold the welding rod with the other hand.

[0057] 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. A portable display stand joint welding device, characterized in that: It comprises a base (1), a plurality of supporting legs (11) fixedly arranged at the bottom of the base (1), and a welding gun (2) movably arranged above the base (1); a limiting mechanism (3) for clamping a workpiece to be welded is arranged at the top of the base (1); The limiting mechanism (3) comprises a column (31) fixedly arranged on the left side of the top of the base (1); a third slide seat (311) is slidably arranged on the surface of the column (31); a connecting column (323) is fixedly arranged on the right side of the third slide seat (311); a first placement plate (32) is fixedly arranged on the right side of the connecting column (323); a limiting tooth plate (312) is movably arranged on the left side of the column (31); and a plurality of teeth (312) are fixedly arranged on the left side of the third slide seat (311) and are engaged with the limiting tooth plate (312). A first threaded rod (314) is rotatably provided at the right bottom of the limiting tooth plate (312), the first threaded rod (314) is threadedly connected to the column (31), a second sliding rod (316) is fixedly provided at the right top of the limiting tooth plate (312), the second sliding rod (316) is slidably connected to the column (31), and a hand wheel (313) coaxial with the first threaded rod (314) is rotatably provided at the left bottom of the limiting tooth plate (312); A vertical plate (34) is arranged on the upper right side of the base (1), a through slot is provided inside the vertical plate (34), the through slot runs through the left and right sides of the vertical plate (34), a clamping seat (35) is fixedly arranged on the upper and lower sides of the through slot, two clamping plates (351) are movably arranged on the left side of the clamping seat (35), a second connecting plate (352) is fixedly arranged on the opposite sides of the two clamping plates (351) at the same level, a fourth sliding rod (353) is fixedly arranged on the right side of the second connecting plate (352), the fourth sliding rod (353) is slidably connected to the clamping seat (35), a push plate (354) is slidably arranged on the inner side of the clamping seat (35), two movable frames (355) are slidably arranged on the surface of the push plate (354), a second movable ring (356) is rotatably arranged on the top of the movable frame (355), and a third movable ring (356) is rotatably arranged on the top of the fourth sliding rod (353). 57), the third movable ring (357) and the second movable ring (356) are fixedly connected via a second connecting rod (358), a fourth movable ring (359) is rotatably provided at the bottom of the movable frame (355), a first movable ring (350) is rotatably provided at the bottom of the clamping seat (35), the first movable ring (350) and the fourth movable ring (359) are fixedly connected via a second connecting rod (358), a transverse plate (341) is fixedly provided in the through groove, a third threaded rod (344) is rotatably provided on the right side of the transverse plate (341), a threaded plate (342) is threadedly connected to the surface of the third threaded rod (344), two push rods (345) are fixedly provided on the left side of the threaded plate (342), the left side of the push rod (345) is fixedly connected to the push plate (354), and a second knob (343) is fixedly provided on the right end of the third threaded rod (344).

2. A portable display stand joint welding device according to claim 1, characterized in that: A pressure plate (321) is movably arranged above the first placement plate (32), a fourth guide rod (324) is fixedly arranged on the top of the connecting column (323), a slip ring (325) is slidably arranged on the surface of the fourth guide rod (324), the right side of the slip ring (325) is fixedly connected to the left side of the pressure plate (321), a top block (326) is fixedly arranged on the top of the fourth guide rod (324), the bottom of the top block (326) is connected to the top of the slip ring (325) via a first return spring, and a handle (320) is fixedly arranged on the top of the pressure plate (321).

3. A portable display stand joint welding device according to claim 2, characterized in that: A third sliding rod (327) is slidably arranged inside the top block (326), and two ends of the third sliding rod (327) pass through the left and right sides of the top block (326). A first connecting plate (328) is fixedly arranged on the left side of the third sliding rod (327), and a U-shaped limiting plate (329) is fixedly arranged on the right bottom end of the first connecting plate (328). A limiting groove matching the U-shaped limiting plate (329) is provided on the surface of the slip ring (325).

4. A portable display stand joint welding device according to claim 3, characterized in that: A first guide seat (21) is fixedly provided on the right side of the top of the pressing plate (321), a first guide rod (211) is fixedly provided on the top of the first guide seat (21), a second slide seat (212) is slidably provided on the surface of the first guide rod (211), a second guide rod (213) is fixedly provided on the top of the second slide seat (212), a first slide seat (23) is slidably provided on the surface of the second guide rod (213), the right side of the first slide seat (23) is fixedly connected to the left side of the welding gun (2) via a first connecting rod (233), and the top of the pressing plate (321) is fixedly provided with a first guide rod (211). A second guide seat (22) is fixedly provided on the top of the second guide seat (22), a third guide rod (221) is fixedly provided on the top of the second guide seat (22), a first slide rod (225) is slidably provided on the surface of the third guide rod (221), the left side of the first slide rod (225) is connected to the right end of the third guide rod (221) via a second return spring, a limit plate (222) is fixedly provided on the top of the first slide rod (225), a side plate (231) is fixedly provided on the left side of the first slide seat (23), and a contact groove for matching the limit plate (222) is provided on the left side of the side plate (231).

5. A portable display stand joint welding device according to claim 4, characterized in that: A mounting seat (33) is fixedly provided on the right side of the top of the base (1); a slide plate (331) is slidably provided on the top of the mounting seat (33); a plurality of fifth guide rods (336) are fixedly provided on the top of the slide plate (331); the fifth guide rods (336) are slidably connected to the vertical plate (34); a latch (338) is inserted on the right side of the mounting seat (33); a pin hole for matching the latch (338) is provided on the right side of the slide plate (331); a plurality of positioning holes (337) for matching the latch (338) are provided on the right side of the mounting seat (33); a connecting ring (12) is fixedly provided on the right side of the latch (338) and the right side of the base (1); and the two connecting rings (12) are connected by a connecting rope.

6. A portable display stand joint welding device according to claim 5, characterized in that: A second threaded rod (332) is fixedly disposed on the top of the slide plate (331), a placement groove for accommodating the top of the second threaded rod (332) is provided at the bottom of the vertical plate (34), a threaded ring (333) is threadedly connected to the surface of the second threaded rod (332), and a first knob (334) is fixedly disposed on the outer side of the threaded ring (333).

7. A portable display stand joint welding device according to claim 6, characterized in that: A second placement plate (335) is fixedly arranged on the left side of the slide plate (331), and a groove is formed on the top of the second placement plate (335).

8. The portable display stand joint welding device according to claim 7, characterized in that: The bottom of the pressing plate (321) and the top of the first placement plate (32) are both fixedly provided with anti-skid pads (322), and the material of the anti-skid pads (322) is specifically rubber material.

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