Showing stand machining and welding device

Abstract

The invention relates to the technical field of welding devices, and particularly discloses a display stand machining and welding device which comprises a machine body and a sliding table unit arranged at the top of the machine body, a plurality of positioning mechanisms distributed in a rectangular mode are arranged at the top of the sliding table unit, and the positioning mechanisms are used for fixing a rectangular frame formed by a plurality of steel bars in a butt joint mode. Through cooperation of a driving motor, a winding roller, a control rope, a gear and a rack, when the sliding table adjusts the distance between the positioning mechanisms to adapt to frames of different specifications, the winding roller automatically winds and unwinds the control rope through a belt linkage mechanism, and the change of the distance between the positioning mechanisms can be accurately responded without manual intervention; whether the length of the frame is stretched or shortened and the width of the frame is increased or reduced, the control rope can achieve dynamic balance of tension through free rotation of the winding roller, transmission looseness or clamping caused by distance change is avoided, and meanwhile the control rope can achieve dynamic balance through rigid transmission of the gear and the rack. And the single power of the driving motor is synchronously transmitted to the inner supporting blocks of all the positioning mechanisms.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and more specifically, it relates to a welding device for display rack processing. Background Art

[0002] As a support component at the bottom of the display rack, the rectangular frame is a key link in the welding process during the production and manufacturing of the display rack. The prior art uses four independent cylinders to drive the inner support blocks to fix the rectangular frame from the inside. The core reason is that there are length and width differences in frames of different specifications. Before welding, the operator needs to adjust the X and Y axis distances of the positioning mechanism through the sliding table unit to adapt to the frame size. If a unified drive is adopted, when the distance between the positioning mechanisms changes, the traditional unified transmission methods (such as rigid connecting rods or transmission belts with fixed lengths) cannot adapt to the dynamic changes in the distances between each inner support block and the drive source. The inner support block farther from the drive source may have a lag in power transmission due to the longer transmission path, while the inner support block closer to the drive source may be damaged due to excessive force, resulting in the failure of the entire drive system.

[0003] Although the independent cylinders solve the problem of distance adaptation, new drawbacks are introduced: each cylinder needs to be adjusted separately for the stroke and air pressure parameters. Not only is the debugging process cumbersome and time-consuming, but it is also difficult to achieve precise synchronization between the cylinders, resulting in uneven forces on the inner angles of the frame, affecting the clamping stability and welding accuracy. In addition, multiple independent cylinders increase the manufacturing, use, and maintenance costs of the equipment.

[0004] In addition, the prior art supports the frame from the inside through the inner support blocks, forming a single-dimensional constraint system. The high temperature generated during the welding process will cause thermal expansion of the metal. Only relying on the inner support force cannot offset the outward deformation trend of the frame. Especially at the edges of the frame, there is a lack of reverse binding force, and it is extremely easy to have an opening phenomenon, resulting in an increase in the weld gap. On the other hand, due to the lack of outward pressing force, the frame is in an unconstrained state in the direction perpendicular to the welding surface, and external interference may cause warping deformation outside the plane of the frame. Summary of the Invention

[0005] The present invention provides a welding device for display rack processing to solve the above technical problems.

[0006] The present invention provides a welding device for display rack processing, including a machine body and a sliding table unit arranged on the top of the machine body. A number of positioning mechanisms distributed in a rectangular shape are arranged on the top of the sliding table unit, and the positioning mechanisms are used to fix a rectangular frame composed of a number of steel bars butt-jointed.

[0007] The positioning mechanism includes a sliding seat slidably connected to the sliding table unit and a mounting plate fixedly installed on the top of the sliding seat through two vertical plates. A positioning strip is fixedly installed on the top of the mounting plate. An inner support assembly for supporting the inner corner of the rectangular frame from the inside is provided on the top of the mounting plate. Clamping assemblies for clamping and fixing the rectangular frame from the outside are provided on both sides of the positioning strip.

[0008] The positioning mechanism further includes a control assembly for driving the inner support assembly and a traction assembly for driving the clamping assembly to move along with the movement of the control assembly. An adaptive driving mechanism for driving the control assembly is provided in the middle of the sliding table unit. When the sliding table unit adjusts the position of the positioning mechanism, the adaptive driving mechanism can automatically adapt to the position change to synchronously drive a plurality of positioning mechanisms.

[0009] Further, the sliding table unit includes a rotating table rotatably installed on the top of the machine body. A lower sliding table is fixedly installed on the top of the rotating table. Two upper sliding tables that are symmetrically arranged front and back are slidably installed on the top of the lower sliding table. The sliding seat is slidably installed on the top of the corresponding upper sliding table, and two sliding seats that are opposite to each other left and right are symmetrical to each other. A connecting beam is commonly connected between two sliding seats that are opposite to each other front and back.

[0010] Further, the inner support assembly includes a fixed plate fixedly installed on the top of the mounting plate and a first return spring fixedly installed on the side of the fixed plate close to the positioning strip. The other end of the first return spring is fixedly installed with an inner support block.

[0011] Further, the clamping assembly includes a support plate fixedly installed on the bottom of the mounting plate and a hinge frame fixedly installed on the top of the support plate. A claw is hinged on the hinge frame, and a slide rod that slidably penetrates through the support plate is hinged at the bottom of the claw.

[0012] Further, the control assembly includes a mounting groove opened on one side of the mounting plate close to the middle of the sliding table unit. A second chute is opened on the top of the mounting plate. The bottom of the inner support block is fixedly installed with an upper rack that is slidably connected to the top wall of the mounting groove through a connecting rod that is slidably connected to the second chute. A lower rack is slidably installed on the bottom wall of the mounting groove. The lower rack and the upper rack are meshed through a gear. A control rope is fixedly installed on the side of the lower rack close to the middle of the sliding table unit.

[0013] Further, a control console is fixedly installed on the bottom of the support plate. The traction assembly includes a pressing block slidably installed on the top of the control console and a pressed block fixedly installed at the bottom end of the slide rod and matched with the pressing block.

[0014] Further, a traction plate is fixedly installed on one side of the pressure block close to the mounting plate. A connecting plate is fixedly installed on the top of the console. A second reset spring is fixedly installed between the connecting plate and the traction plate. Fixed pulleys are fixedly installed on the side of the connecting plate away from the first reset spring and on the top of the sliding seat. A traction rope is wound around the outside of the two fixed pulleys. A slide rail is slidably installed at the bottom of the mounting plate. The two ends of the traction rope are respectively fixedly connected to the traction plate and the slide rail.

[0015] Further, an L-shaped rod is fixedly installed at the bottom of the inner support block. A first chute is opened at the top of the mounting plate and is slidably connected to the vertical section of the L-shaped rod perpendicular to the inner support block. The end of the horizontal section of the L-shaped rod parallel to the inner support block is slidably installed in the slide rail.

[0016] Further, the adaptive driving mechanism includes a round table fixedly installed on the top of the lower sliding table and a plurality of winding rollers rotatably installed on the top of the round table and distributed in a rectangular shape. The control rope is wound around the outside of the corresponding winding roller. A protective cover is fixedly installed on the top of the round table. A driving motor is fixedly installed on the top of the protective cover. The output end of the driving motor is fixedly connected to the rotating shaft of one of the winding rollers.

[0017] Further, a welding unit for welding the rectangular frame is provided on the top of the machine body.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. In this application, through the cooperation of the driving motor, winding rollers, control rope and gear rack, when the slide table adjusts the distance between the positioning mechanisms to adapt to different specifications of the frame, the winding rollers automatically wind and unwind the control rope through the belt linkage mechanism, and can accurately respond to the change of the distance between the positioning mechanisms without manual intervention. Whether the length of the frame is stretched or shortened, or the width is enlarged or reduced, the control rope can achieve dynamic balance of tension through the free rotation of the winding rollers, avoiding transmission slack or jamming caused by the change of distance. At the same time, the control rope transmits the single power of the driving motor to the inner support blocks of all positioning mechanisms through the rigid transmission of the gear rack, so that each inner support block moves towards the inner corner of the frame with exactly the same stroke and speed, achieving a breakthrough in universality for adapting to multi-specification frames, and significantly improving the changeover efficiency and equipment utilization rate in multi-specification production scenarios.

[0020] 2. In this application, through the transmission chain of the control rope - gear - traction rope, the single power of the driving motor is synchronously transmitted to all positioning mechanisms to realize the inner support and clamping fixation of the rectangular frame. The inner and outer clamping of the inner support block and the claw form a three-dimensional constraint system. A closing couple is formed by the inner thrust of the inner support block and the outer clamping force of the claw. The inner support of the inner support block can offset the stress generated by the welding thermal deformation, and the outer clamping of the claw prevents the edge of the frame from warping. This three-dimensional constraint makes the frame in a six-degree-of-freedom fixed state during the welding process, avoiding deviation and resulting in poor welds. Brief Description of the Drawings

[0021] Figure 1 is a schematic perspective view of the three-dimensional structure of the present invention.

[0022] Figure 2 is a schematic perspective view of the partial three-dimensional structure of the turntable, lower sliding table, upper sliding table, connecting beam and positioning mechanism of the present invention.

[0023] Figure 3 is the Figure 2 partial enlarged view of part A in the present invention.

[0024] Figure 4 is the Figure 2 partial enlarged view of part B in the present invention.

[0025] Figure 5 is a schematic perspective view of the partial three-dimensional structure of the support plate, hinge frame, claw and sliding rod of the present invention.

[0026] Figure 6 is a schematic perspective view of the partial three-dimensional structure of the fixing plate, first return spring and inner support block of the present invention.

[0027] Figure 7 is a schematic perspective view of the partial three-dimensional structure of the mounting plate and control assembly of the present invention.

[0028] Figure 8 is a schematic perspective view of the partial three-dimensional structure of the traction plate, connecting plate, second return spring, fixed pulley and traction rope of the present invention.

[0029] In the figure: 1, body; 2, sliding table unit; 21, turntable; 22, lower sliding table; 23, upper sliding table; 24, connecting beam; 3, positioning mechanism; 31, sliding seat; 32, vertical plate; 33, mounting plate; 34, inner support assembly; 341, fixing plate; 342, first return spring; 343, inner support block; 35, clamping assembly; 351, support plate; 352, hinge frame; 353, claw; 354, sliding rod; 36, traction assembly; 361, L-shaped rod; 362, extrusion block; 363, pressed block; 364, traction plate; 365, connecting plate; 366, second return spring; 367, fixed pulley; 368, traction rope; 369, slide rail; 360, first chute; 37, control assembly; 371, mounting groove; 372, connecting rod; 373, upper rack; 374, gear; 375, lower rack; 376, control rope; 377, second chute; 38, control console; 39, positioning bar; 4, adaptive drive mechanism; 41, conical platform; 42, winding roller; 43, drive motor; 44, protective cover; 5, steel bar; 6, welding unit. Detailed Description of the Invention

[0030] Reference will now be made to exemplary embodiments to discuss the subject matter described herein. It should be understood that the discussion of these embodiments is provided so that those skilled in the art can better understand and thereby implement the subject matter described herein. Changes may be made to the functions and arrangements of the elements discussed without departing from the scope of protection of the content of this specification. Each example may omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples may be combined in other examples.

[0031] Referring to Figure 1 and Figure 2 , in this embodiment, a display rack processing and welding device is proposed, which includes a machine body 1 and a sliding table unit 2 arranged on the top of the machine body 1. A number of positioning mechanisms 3 are arranged on the top of the sliding table unit 2 in a rectangular distribution. The positioning mechanisms 3 are used to fix a rectangular frame formed by butt-jointing a number of steel bars 5. A welding unit 6 for welding the rectangular frame is arranged on the top of the machine body 1.

[0032] Referring to Figure 1 and Figure 2 , the positioning mechanism 3 includes a sliding seat 31 slidably connected to the sliding table unit 2 and a mounting plate 33 fixedly installed on the top of the sliding seat 31 through two vertical plates 32. A positioning bar 39 is fixedly installed on the top of the mounting plate 33, and an inner support assembly 34 for supporting the inner corner of the rectangular frame from the inside is arranged on the top of the mounting plate 33.

[0033] Referring to Figure 1 and Figure 2 , the sliding table unit 2 includes a rotating table 21 rotatably installed on the top of the machine body 1. A lower sliding table 22 is fixedly installed on the top of the rotating table 21. Two upper sliding tables 23 symmetrically arranged front and back are slidably installed on the top of the lower sliding table 22. The sliding seat 31 is slidably installed on the top of the corresponding upper sliding table 23, and two sliding seats 31 opposite left and right are symmetrical to each other. A connecting beam 24 is commonly connected between two sliding seats 31 opposite front and back.

[0034] It should be noted that both the driving of the upper sliding table 23 by the lower sliding table 22 and the driving of the positioning mechanism 3 by the upper sliding table 23 adopt a bidirectional lead screw drive. The above bidirectional lead screw drive technology is well-known common knowledge to those skilled in the art, so it will not be elaborated in this application.

[0035] Referring to Figure 2 , Figure 5 , Figure 6 and Figure 7 , the positioning mechanism 3 further includes a control component 37 for driving the inner support assembly 34. The inner support assembly 34 includes a fixing plate 341 fixedly installed on the top of the mounting plate 33 and a first return spring 342 fixedly installed on the side of the fixing plate 341 close to the positioning bar 39. The other end of the first return spring 342 is fixedly installed with an inner support block 343.

[0036] Refer to Figure 5 、 Figure 6 and Figure 7 , the control component 37 includes an installation groove 371 opened on one side of the mounting plate 33 close to the middle of the sliding table unit 2. A second sliding groove 377 is opened at the top of the mounting plate 33. The bottom of the inner support block 343 is fixedly installed with an upper rack 373 slidably connected to the top wall of the installation groove 371 through a connecting rod 372 slidably connected to the second sliding groove 377. A lower rack 375 is slidably installed on the bottom wall of the installation groove 371. The lower rack 375 is meshed with the upper rack 373 through a gear 374. A control rope 376 is fixedly installed on one side of the lower rack 375 close to the middle of the sliding table unit 2.

[0037] Refer to Figure 5 、 Figure 6 and Figure 7 , an adaptive driving mechanism 4 for driving the control component 37 is provided in the middle of the sliding table unit 2. When the sliding table unit 2 adjusts the position of the positioning mechanism 3, the adaptive driving mechanism 4 can automatically adapt to the position change to synchronously drive a plurality of positioning mechanisms 3.

[0038] Refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 7 , the adaptive driving mechanism 4 includes a frustum 41 fixedly installed on the top of the lower sliding table 22 and a plurality of wire winding rollers 42 rotatably installed on the top of the frustum 41 and distributed in a rectangular shape. The control rope 376 is wound around the outer side of the corresponding wire winding roller 42. A protective cover 44 is fixedly installed on the top of the frustum 41. A driving motor 43 is fixedly installed on the top of the protective cover 44. The output end of the driving motor 43 is fixedly connected to the rotating shaft of one of the wire winding rollers 42. A plurality of wire winding rollers 42 are connected by a belt drive.

[0039] During specific use, first, the operator adjusts the sliding table unit 2 according to the specifications of the rectangular frame to adjust the positioning mechanism 3 to a suitable position. After the adjustment is completed, a plurality of steel bars 5 are spliced into a frame, and then the frame is placed on the tops of a plurality of mounting plates 33, and the four right-angle sides of the frame are aligned with the four positioning strips 39, and the inner angles are aligned with the inner support blocks 343 (as shown in Figure 1 and Figure 2 ). At this time, the sliding table unit 2 locks the position of the positioning mechanism 3 through a mechanical structure, providing a stable reference for subsequent clamping and welding.

[0040] Next, start the drive motor 43, and the winding roller 42 synchronously winds up the control rope 376. In the initial stage of winding, the slack control rope 376 caused by the position adjustment of the positioning mechanism 3 will be straightened first. After being straightened, continuous winding will pull the control rope 376, driving the lower rack 375 to drive the upper rack 373 through the gear 374, so that the upper rack 373 pushes the inner support block 343 to move towards the inner corner of the rectangular frame and stretch the first return spring 342 until the inner support block 343 abuts against the inner corner of the frame from the inside, thus completing the inner support and fixation of the rectangular frame.

[0041] Refer to Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 , both sides of the positioning strip 39 are provided with a clamping component 35 for clamping and fixing the rectangular frame from the outside, and a traction component 36 for driving and pulling the clamping component 35 to move along with the control component 37. The clamping component 35 includes a support plate 351 fixedly installed at the bottom of the mounting plate 33 and a hinge frame 352 fixedly installed at the top of the support plate 351. A claw 353 is hinged on the hinge frame 352. A sliding rod 354 that slidably penetrates the support plate 351 is hinged at the bottom of the claw 353. An adaptation groove is formed at the hinge joint between the sliding rod 354 and the claw 353, and the hinge shaft of the sliding rod 354 and the claw 353 is slidably installed in the adaptation groove.

[0042] It should be noted that a torsion spring is provided at the hinge joint between the hinge frame 352 and the claw 353, and the torsion spring forces the claw 353 to flip away from the positioning strip 39.

[0043] Refer to Figure 3 , Figure 5 , Figure 6 and Figure 8 , a control console 38 is fixedly installed at the bottom of the support plate 351. The traction component 36 includes a pressing block 362 slidably installed on the top of the control console 38 and a pressure-receiving block 363 fixedly installed at the bottom end of the sliding rod 354 and cooperating with the pressing block 362.

[0044] Refer to Figure 3 , Figure 5 , Figure 6 and Figure 8 , a traction plate 364 is fixedly installed on the side of the pressure-receiving block 363 close to the mounting plate 33. A connecting plate 365 is fixedly installed on the top of the control console 38. A second return spring 366 is fixedly installed between the connecting plate 365 and the traction plate 364. Fixed pulleys 367 are fixedly installed on the side of the connecting plate 365 away from the first return spring 342 and on the top of the sliding seat 31. A traction rope 368 is wound around the outside of the two fixed pulleys 367. A slide rail 369 is slidably installed at the bottom of the mounting plate 33. The two ends of the traction rope 368 are respectively fixedly connected to the traction plate 364 and the slide rail 369.

[0045] Refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 8 As shown in FIGS. Figure 3 , Figure 5 , Figure 6 and Figure 8 , a L-shaped rod 361 is fixedly installed at the bottom of the inner support block 343. A first chute 360 which is slidably connected to the vertical section of the L-shaped rod 361 perpendicular to the inner support block 343 is formed at the top of the mounting plate 33. The end of the horizontal section of the L-shaped rod 361 parallel to the inner support block 343 is slidably installed in the slide rail 369.

[0046] During specific use, when the inner support block 343 presses against the inner corner of the frame from the inside, the horizontal end of the L-shaped rod 361 slides in the chute of the slide rail 369. The slide rail 369 is forced to move towards the side close to the edge of the positioning strip 39 by the oblique thrust. At the same time, the sliding distance of the L-shaped rod 361 itself in the chute of the slide rail 369 can adapt to the displacement of the inner support block 343, avoiding movement interference caused by rigid connection. As the slide rail 369 moves towards the side close to the edge of the positioning strip 39, the traction rope 368 is pulled. Under the action of the two fixed pulleys 367, the pulling force direction is converted into a pulling force for pulling the traction plate 364 towards the side close to the connecting plate 365, thereby pulling the traction plate 364 and compressing the second return spring 366, so that the extrusion block 362 extrudes the pressed block 363, jacks up the slide rod 354 upwards, drives the claw 353 to flip towards the edge of the frame. When the pressed block 363 is jacked up to contact the top surface of the extrusion block 362, the claw 353 buckles and clamps the edge of the frame. After the claw 353 buckles and clamps the edge of the frame, the inner support block 343 continues to move a short distance and presses against the inner corner of the frame from the inside. Thus, the internal and external clamping is completed synchronously.

[0047] After the clamping is completed, the rotating table 21 drives the four joints of the rectangular frame to rotate under the welding unit 6 in sequence. The welding unit 6 welds the four corner joints of the rectangular frame one by one. After the welding is completed, the driving motor 43 reverses, and the winding roller 42 rotates counterclockwise to release the control rope 376. The control rope 376 is relaxed to release the pulling force on the lower rack 375. The first return spring 342 pushes the inner support block 343 to retract. Through the reverse transmission of the gear 374 and the rack, the inner support block 343 disengages from the inner corner of the frame. At the same time, the retraction of the inner support block 343 drives the L-shaped rod 361 and the slide rail 369 to slide reversely and reset. Then, the second return spring 366 releases the elastic potential energy to push the traction plate 364 to reset, drives the extrusion block 362 away from the pressed block 363, the torsion spring drives the claw 353 to flip and reset, and the slide rod 354 drops. Finally, the operator takes off the welded frame. If a frame of a new specification needs to be welded, unlock the slide table unit 2 to adjust the position of the positioning mechanism 3 and enter the next production cycle.

[0048] It should be noted that the displacement and welding technology of the welding unit 6 are common knowledge in the art, so they will not be elaborated in this application.

[0049] Finally, it should be noted that: Obviously, the above embodiments are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A display rack processing and welding device, comprising: The machine body (1) and the sliding table unit (2) arranged on the top of the machine body (1), characterized in that a number of positioning mechanisms (3) distributed in a rectangle are arranged on the top of the sliding table unit (2), and the positioning mechanisms (3) are used for fixing a rectangular frame formed by butting a number of steel bars (5); The positioning mechanism (3) includes a sliding seat (31) slidably connected to the sliding table unit (2) and a mounting plate (33) fixedly installed on the top of the sliding seat (31) through two vertical plates (32). A positioning strip (39) is fixedly installed on the top of the mounting plate (33). An inner support assembly (34) for supporting the inner corner of the rectangular frame from the inside is arranged on the top of the mounting plate (33). Clamping assemblies (35) for clamping and fixing the rectangular frame from the outside are arranged on both sides of the positioning strip (39); The positioning mechanism (3) further includes a control assembly (37) for driving the inner support assembly (34) and a traction assembly (36) for driving the clamping assembly (35) to move along with the movement of the control assembly (37). An adaptive driving mechanism (4) for driving the control assembly (37) is arranged in the middle of the sliding table unit (2). When the sliding table unit (2) adjusts the position of the positioning mechanism (3), the adaptive driving mechanism (4) can automatically adapt to the position change to synchronously drive a number of positioning mechanisms (3).

2. The processing and welding device for a display rack according to claim 1, wherein, The sliding table unit (2) includes a rotating table (21) rotatably installed on the top of the machine body (1). A lower sliding table (22) is fixedly installed on the top of the rotating table (21). Two upper sliding tables (23) symmetrically arranged front and back are slidably installed on the top of the lower sliding table (22). The sliding seat (31) is slidably installed on the top of the corresponding upper sliding table (23), and two sliding seats (31) opposite to each other left and right are symmetrical to each other. A connecting beam (24) is commonly connected between two sliding seats (31) opposite to each other front and back.

3. The processing and welding device for a display rack according to claim 1, wherein, The inner support assembly (34) includes a fixing plate (341) fixedly installed on the top of the mounting plate (33) and a first return spring (342) fixedly installed on the side of the fixing plate (341) close to the positioning strip (39). The other end of the first return spring (342) is fixedly installed with an inner support block (343).

4. The processing and welding device for a display rack according to claim 3, characterized in that, The clamping assembly (35) includes a support plate (351) fixedly installed on the bottom of the mounting plate (33) and a hinge frame (352) fixedly installed on the top of the support plate (351). A claw (353) is hinged on the hinge frame (352). A sliding rod (354) sliding through the support plate (351) is hinged to the bottom of the claw (353).

5. The processing and welding device for a display rack according to claim 3, characterized in that, The control component (37) includes a mounting groove (371) formed on one side of the mounting plate (33) close to the middle of the sliding table unit (2). A second sliding groove (377) is formed at the top of the mounting plate (33). The bottom of the inner support block (343) is fixedly installed with an upper rack (373) that is slidably connected to the top wall of the mounting groove (371) through a connecting rod (372) that is slidably connected to the second sliding groove (377). A lower rack (375) is slidably installed on the bottom wall of the mounting groove (371). The lower rack (375) is meshed with the upper rack (373) through a gear (374). A control rope (376) is fixedly installed on one side of the lower rack (375) close to the middle of the sliding table unit (2).

6. The processing and welding device for a display rack according to claim 4, characterized in that, A control console (38) is fixedly installed at the bottom of the support plate (351). The traction component (36) includes a pressing block (362) slidably installed on the top of the control console (38) and a compression block (363) fixedly installed at the bottom end of the sliding rod (354) and cooperating with the pressing block (362).

7. A display rack processing and welding device according to claim 6, characterized in that, A traction plate (364) is fixedly installed on one side of the compression block (363) close to the mounting plate (33). A connecting plate (365) is fixedly installed at the top of the control console (38). A second return spring (366) is fixedly installed between the connecting plate (365) and the traction plate (364). Fixed pulleys (367) are fixedly installed on one side of the connecting plate (365) far from the first return spring (342) and on the top of the sliding seat (31). A traction rope (368) is wound around the outside of the two fixed pulleys (367). A slide rail (369) is slidably installed at the bottom of the mounting plate (33). The two ends of the traction rope (368) are fixedly connected to the traction plate (364) and the slide rail (369) respectively.

8. The processing and welding device for a display rack according to claim 7, wherein An L-shaped rod (361) is fixedly installed at the bottom of the inner support block (343). A first sliding groove (360) is formed at the top of the mounting plate (33) and is slidably connected to the vertical section of the L-shaped rod (361) perpendicular to the inner support block (343). The end of the horizontal section of the L-shaped rod (361) parallel to the inner support block (343) is slidably installed in the slide rail (369).

9. The processing and welding device for a display rack according to claim 5, characterized in that, The adaptive driving mechanism (4) includes a frustum (41) fixedly installed at the top of the lower sliding table (22) and a plurality of wire winding rollers (42) rotatably installed at the top of the frustum (41) and distributed in a rectangular shape. The control rope (376) is wound around the outside of the corresponding wire winding roller (42). A protective cover (44) is fixedly installed at the top of the frustum (41). A driving motor (43) is fixedly installed at the top of the protective cover (44). The output end of the driving motor (43) is fixedly connected to the rotating shaft of one of the wire winding rollers (42).

10. The processing and welding device for a display rack according to claim 1, characterized in that, A welding unit (6) for welding the rectangular frame is provided at the top of the machine body (1).

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