Welding device of industrial robot

Abstract

The utility model provides a welding device of an industrial robot, which comprises a machine frame, a laser welding mechanism arranged in the machine frame, a plate placing mechanism arranged on one side of the top of the machine frame, and a limiting assembly arranged on the other side of the top of the machine frame, the plate placing mechanism comprises a pneumatic discharging assembly arranged above the limiting assembly and a pneumatic feeding assembly matched with the pneumatic discharging assembly, and the pneumatic feeding assembly comprises an elastic feeding structure and a pneumatic pushing structure arranged on one side of the elastic feeding structure. The elastic feeding structure comprises a containing frame and a push plate connected to the interior of the containing frame through an elastic piece, the welding quality between the rib plate and the frame body is improved, and the using effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial robot welding, and particularly relates to a welding device for an industrial robot. Background Art

[0002] Industrial robots can be classified in various ways according to structural characteristics, application fields, working methods, etc. Common types of industrial robots include SCARA robots, humanoid robots, Delta robots, linear robots, AGV robots, and collaborative robots. Among them, an AGV robot is an automatic guided robot vehicle used for material handling and warehouse management in industrial production.

[0003] An AGV robot usually consists of multiple welded components, including a chassis, a body, brackets, wheels, sensors, etc. The chassis is usually welded from steel or aluminum alloy (as Figure 9 shown), and is used to support the entire vehicle body and load.

[0004] When welding the chassis of an AGV robot, multiple rib plates need to be placed into a frame and the rib plates should be in close contact with the inner side wall of the frame, and then welding is carried out. To ensure the firmness of the weld between the rib plate and the frame, the length of the rib plate has a small difference from the width dimension inside the frame, so as to avoid a large weld gap between the rib plate and the frame after welding. However, this will cause the rib plate to require multiple position adjustments to be accurately inserted into the frame and in close contact with the inner wall of the frame when being placed into the frame, thus reducing the speed and convenience of placing the rib plate; and when welding the rib plate and the frame, the rib plate is prone to shaking under the action of the welding force, thereby affecting the welding quality between the rib plate and the frame. Summary of the Invention

[0005] In order to solve the above technical problems, the utility model provides a welding device for an industrial robot to solve the technical problems in the above background art.

[0006] The invention provides the following technical solutions. A welding device for an industrial robot includes: a frame, a laser welding mechanism disposed inside the frame, a plate placing mechanism disposed on one side of the top of the frame, and a limiting component disposed on the other side of the top of the frame, and the limiting component is used for limiting a first workpiece to be welded;

[0007] The plate placing mechanism includes a pneumatic feeding component arranged above the limiting component and a pneumatic loading component adapted to the pneumatic feeding component. The pneumatic loading component includes an elastic loading structure and a pneumatic pushing structure arranged on one side of the elastic loading structure. The elastic loading structure includes a placing frame and a pushing plate connected to the inside of the placing frame through an elastic member, so that a plurality of second workpieces to be welded are squeezed and limited in the placing frame. A first through groove is formed on one side of the placing frame, so that the second workpieces to be welded are pushed out of the placing frame by the pneumatic pushing structure through the first through groove and enter the pneumatic feeding component.

[0008] The pneumatic feeding component includes a pneumatic lifting rod, a synchronous plate connected to the bottom of the pneumatic lifting rod, and a plurality of adsorption seats connected to the bottom of the synchronous plate. The adsorption seats are used for adsorbing the second workpieces to be welded entering the pneumatic feeding component. The pneumatic lifting rod is used for placing the second workpieces to be welded in the adsorption seats on the limiting component, and it is adapted to the first workpieces to be welded.

[0009] The laser welding mechanism includes an electric lifting component and a plurality of groups of laser welding heads connected to the electric lifting component. The electric lifting component is used for driving the laser welding heads to perform lifting welding on the welding joints of the second workpieces to be welded and the first workpieces to be welded.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the plate placing mechanism, it can ensure that the rib plates are quickly and accurately placed inside the frame body and are closely attached to the inner side wall of the frame body, without the need for multiple position adjustments, thus greatly improving the speed and convenience of placing the rib plates. At the same time, the present device also adopts laser welding technology. The present device does not contact the weld during the welding process, thereby eliminating the possible shaking in the traditional welding method and further improving the welding quality between the rib plates and the frame body, and the use effect is good.

[0011] Furthermore, the elastic loading structure further includes a fixed frame installed on the frame, an installation groove formed at one end of the fixed frame, and a second through groove formed on one side of the fixed frame. The installation groove is used for installing the placing frame, so that the second through groove is communicated with the first through groove. Limiting plates are arranged at the top and bottom of the placing frame, and the sizes of the limiting plates correspond to the sizes of the inner walls of the installation groove, so that feeding ports are formed at the top and bottom of the placing frame, and cover plates are covered on the feeding ports.

[0012] Further, the limiting component includes a rectangular through groove formed in the top of the frame, a plurality of support rods arranged in the rectangular through groove, a pneumatic clamp seat and an L-shaped positioning frame arranged on the top of the frame. Among them, the pneumatic clamp seat and the L-shaped positioning frame are respectively arranged on both sides of the rectangular through groove, the pneumatic clamp seat can move in a direction close to or away from the L-shaped positioning frame, and the support rods correspond to the second workpiece to be welded.

[0013] Further, the pneumatic feeding component further includes an adsorption groove formed in the bottom of the adsorption seat, a plurality of negative pressure holes arranged on the adsorption seat, a pneumatic support plate, a damping pad and a tracheal joint. The adsorption groove penetrates through both ends of the adsorption seat, one ends of the plurality of negative pressure holes are respectively laid on the inner walls of the two sides of the adsorption groove, the other ends of the negative pressure holes are connected to the tracheal joint, the pneumatic support plate is arranged at the bottom of the adsorption groove, and the damping pad is arranged at one end of the adsorption groove.

[0014] Further, both ends of the top of the synchronous plate are arranged on vertical guide rods, and the vertical guide rods are slidably connected with the bracket.

[0015] Further, the pneumatic pushing structure includes a pneumatic push rod and a push block connected to the pneumatic push rod, and the push block is adapted to the first through groove.

[0016] Further, the pneumatic feeding component further includes a screw moving structure, which includes substrates arranged at both ends of the bottom of the placement frame, a horizontal threaded lead screw arranged between the two substrates, an adjusting handle arranged at one end of the horizontal threaded lead screw, a sliding seat sleeved on the horizontal threaded lead screw, and a connecting component connected to the sliding seat. The connecting component is detachably connected to the push plate to drive the push plate to move.

[0017] Further, the connecting component includes an opening formed in the top of the sliding seat, a fixing bolt arranged on the sliding seat, and a convex block connected to the bottom of the push plate. The convex block is provided with a through hole adapted to the fixing bolt, and the convex block is adapted to the opening so that the convex block is fixed in the opening.

[0018] Further, the electric lifting component includes a driving motor installed inside the frame, a vertical threaded lead screw connected to the driving motor, a threaded sleeve sleeved on the vertical threaded lead screw, a connecting plate seat installed on the threaded sleeve, and a plurality of laser head positioning frames arranged on the connecting plate seat. The laser head positioning frames are used to install the laser welding head.

[0019] Further, welding installation parts extend from both ends of the connecting plate seat, and laser head positioning frames are respectively arranged on both sides of the welding installation parts. The laser head positioning frames arranged on one side of the welding installation part are symmetrically arranged at intervals in pairs. Oblique installation holes are respectively formed on the sides of the two laser head positioning frames in a group that are close to each other, and the oblique installation holes are used for installing the laser welding head. Description of the Drawings

[0020] Figure 1 Schematic structural diagram of a welding device of an industrial robot according to the present utility model;

[0021] Figure 2 Schematic structural diagram of a rectangular through groove in a welding device of an industrial robot according to the present utility model;

[0022] Figure 3 Schematic structural diagram of a laser welding mechanism in a welding device of an industrial robot according to the present utility model;

[0023] Figure 4 Schematic structural diagram of a pneumatic feeding component in a welding device of an industrial robot according to the present utility model;

[0024] Figure 5 Schematic structural diagram of a pneumatic loading component in a welding device of an industrial robot according to the present utility model;

[0025] Figure 6 Schematic structural diagram of an elastic loading structure in a welding device of an industrial robot according to the present utility model;

[0026] Figure 7 Schematic structural diagram of a pneumatic pushing structure in a welding device of an industrial robot according to the present utility model;

[0027] Figure 8 Schematic structural diagram of a screw rod moving structure in a welding device of an industrial robot according to the present utility model;

[0028] Figure 9 Schematic diagram of an existing base structure.

[0029] Main element symbol description: 1, frame; 2, laser welding mechanism; 100, plate placing mechanism; 11, rectangular through groove; 12, support rod; 13, L-shaped positioning frame; 14, pneumatic clamping seat; 15, bracket; 20, electric lifting component; 29, laser welding head; 416, rib plate; 200, frame body; 3, pneumatic feeding component; 4, pneumatic loading component;

[0030] 21. Driving motor; 22. Vertical threaded lead screw; 23. Threaded sleeve; 24. Connecting plate seat; 25. Welding installation part; 26. Limit guide rod; 27. Laser head positioning bracket; 28. Oblique installation hole;

[0031] 31. Pneumatic lifting rod; 32. Synchronization plate; 33. Vertical guide rod; 34. Adsorption seat; 35. Adsorption groove; 36. Negative pressure hole; 37. Pneumatic support plate; 38. Damping pad; 39. Air pipe joint;

[0032] 41. Elastic feeding structure; 42. Pneumatic pushing structure; 43. Screw moving structure;

[0033] 411. Fixed frame; 412. Installation groove; 413. Placing frame; 4131. Limit plate; 4132. Feeding port; 4133. Cover plate; 414. First through groove; 415. Second through groove; 417. Push plate; 4171. Protrusion; 418. Spring; 421. Pneumatic push rod; 422. Push block;

[0034] 431. Base; 432. Horizontal threaded lead screw; 433. Adjusting handle; 434. Slide seat; 435. Opening part; 436. Locking bolt.

[0035] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific embodiments

[0036] For ease of understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] As shown Figures 1 - 9 in the figure, a welding device for an industrial robot according to an embodiment of the present utility model includes a frame 1, a laser welding mechanism 2, and a plate placing mechanism 100. Among them, a rectangular through groove 11 is opened at the top of the frame 1, and a support rod 12 is integrally formed on the inner wall of the rectangular through groove 11. A pneumatic chuck 14 and an L-shaped positioning frame 13 are respectively bolted to the top of the frame 1 and are located outside the rectangular through groove 11. A support 15 is vertically arranged at the top of the frame 1 and is located outside the L-shaped positioning frame 13; the laser welding mechanism 2 includes an electric lifting assembly 20 and multiple groups of laser welding heads 29. Among them, the electric lifting assembly 20 is arranged inside the frame 1 and corresponds to the position of the rectangular through groove 11. Multiple groups of laser welding heads 29 are respectively obliquely installed on the top of the electric lifting assembly 20 and are located outside the support rod 12. Multiple groups of laser welding heads 29 are respectively precisely aligned with the welds of the rib plate 416 and the frame 200; the plate placing mechanism 100 includes a pneumatic feeding assembly 3 and a pneumatic loading assembly 4. Among them, the pneumatic feeding assembly 3 is arranged at the bottom of the support 15 and is located on one side of the top of the rectangular through groove 11. The pneumatic loading assembly 4 is arranged at the bottom of the support 15 and is located on one side of the pneumatic feeding assembly 3.

[0040] It should be noted that the laser welding head 29 does not contact the weld.

[0041] Specifically, during use, first place the frame (the first workpiece to be welded) 200 on the top of the frame 1, and then push the frame 200 to make it abut against the surface of the L-shaped positioning frame 13 to achieve bilateral positioning of the frame 200. After the positioning of the frame 200 is completed, operate the pneumatic chuck 14. After the pneumatic chuck 14 operates, it fixes the frame 200.

[0042] After the frame 200 is fixed, the rib plate (the second workpiece to be welded) 416 is conveyed to the pneumatic feeding assembly 3 through the pneumatic loading assembly 4. Then, the pneumatic feeding assembly 3 adsorbs the rib plate 416 and drives the rib plate 416 to move into the frame 200. After the rib plate 416 moves into the frame 200, its bottom is seated on the top of the support rod 12. Then, the electric lifting assembly 20 drives multiple groups of laser welding heads 29 to lift and lower synchronously. During the lifting and lowering process, multiple groups of laser welding heads 29 weld the weld. After the welding is completed, the electric lifting assembly 20 drives the group of laser welding heads 29 to reset. Then, the pneumatic feeding assembly 3 releases the rib plate 416 and resets. Next, control the pneumatic chuck 14 to stop operating and separate it from the frame 200. Finally, remove the frame 200.

[0043] In an embodiment of the present utility model, as Figure 3As shown, the electric lifting assembly 20 includes a driving motor 21, a vertical threaded lead screw 22, a threaded sleeve 23, a connecting plate seat 24, a welding installation part 25, a limiting guide rod 26, a laser head positioning bracket 27, and an inclined installation hole 28. Among them, the driving motor 21 is fixedly connected to the inner wall of the frame 1, the vertical threaded lead screw 22 is rotatably connected to the inner wall of the frame 1 and is located on one side of the top of the driving motor 21. One end of the vertical threaded lead screw 22 is fixedly connected to the output end of the driving motor 21. The threaded sleeve 23 is threadedly connected to the outer surface of the vertical threaded lead screw 22. The connecting plate seat 24 is fixedly connected to the top of the threaded sleeve 23. The welding installation part 25 is integrally formed on the surface of the connecting plate seat 24. The limiting guide rod 26 is fixedly connected to the bottom of the welding installation part 25 and is vertically slidably connected to the inner wall of the frame 1. The laser head positioning brackets 27 are symmetrically integrally formed on the top of the welding installation part 25 and are located outside the support rod 12. The inclined installation holes 28 are respectively opened on the surfaces of the laser head positioning brackets 27. Multiple groups of laser welding heads 29 are respectively threadedly connected to the inner walls of the multiple groups of inclined installation holes 28.

[0044] It should be noted that the electric lifting assembly 20 described in this embodiment is used to drive multiple groups of laser welding heads 29 to lift synchronously to achieve synchronous welding operations.

[0045] Specifically, when the driving motor 21 is powered on and operates, the driving motor 21 drives the vertical threaded lead screw 22 to rotate forward and backward synchronously. The forward and backward rotation of the vertical threaded lead screw 22 drives the threaded sleeve 23, the connecting plate seat 24, the welding installation part 25, the limiting guide rod 26, the laser head positioning bracket 27, and the inclined installation hole 28 to lift vertically synchronously. The vertical lifting of the inclined installation hole 28 drives the laser welding head 29 to lift vertically synchronously. During the vertical lifting process of the laser welding head 29, welding is performed on the weld.

[0046] In an embodiment of the present utility model, as Figure 4As shown in the figure, the pneumatic discharging assembly 3 includes a pneumatic lifting rod 31, a synchronous plate 32, a vertical guide rod 33, an adsorption seat 34, an adsorption groove 35, a negative pressure hole 36, a pneumatic support plate 37, a damping pad 38 and a tracheal joint 39. Among them, the synchronous plate 32 is arranged on one side of the bottom of the bracket 15. The vertical guide rods 33 are symmetrically and fixedly connected to the top of the synchronous plate 32 and are slidably connected to the inner wall of the bracket 15. The pneumatic lifting rod 31 is fixedly connected to the top of the bracket 15 and is fixedly connected to the top of the synchronous plate 32. The adsorption seat 34 is fixedly connected to the bottom of the synchronous plate 32. The adsorption groove 35 is opened at the bottom of the adsorption seat 34 and corresponds to the position of the support rod 12. The negative pressure holes 36 are symmetrically opened on the inner wall of the adsorption groove 35. The pneumatic support plate 37 is arranged on the inner wall of one side of the adsorption groove 35 and is located on one side of the bottom of the negative pressure hole 36. The damping pads 38 are symmetrically embedded in the inner wall of the adsorption groove 35 and are located outside the negative pressure holes 36. The tracheal joint 39 is arranged on the surface of the adsorption seat 34. One end of the tracheal joint 39 is connected to one end of an external trachea, and the other end of the tracheal joint 39 is respectively connected to the negative pressure hole 36 and the pneumatic support plate 37.

[0047] Specifically, the pneumatic support plate 37 is first ventilated and operated so that one end of it abuts against the inner wall of the adsorption groove 35 to support the bottom of the rib plate 416. When the rib plate 416 enters the inside of the adsorption groove 35, it is respectively slidably connected to the inner wall of the adsorption groove 35 and the top of the pneumatic support plate 37. When the pneumatic feeding assembly 4 runs to the maximum stroke, the position of the rib plate 416 inside the adsorption groove 35 is also fixed accordingly to achieve positioning. To prevent the rib plate 416 from sliding after positioning, the damping pads 38 are provided in this device. The damping pads 38 can effectively prevent the rib plate 416 from displacing, and the use effect is good. Then, the external negative pressure device is started. The external negative pressure device operates to generate negative pressure in the negative pressure holes 36 through the mutual cooperation of the external pipeline and the tracheal joint 39, so as to tightly adsorb the rib plate 416 to achieve the fixation of the rib plate 416. Then, the pneumatic support plate 37 resets to facilitate the rib plate 416 to descend directly onto the top of the support rod 12. Then, the pneumatic lifting rod 31 is ventilated and operated. The operation of the pneumatic lifting rod 31 synchronously drives the synchronous plate 32 and the adsorption seat 34 to descend. After the adsorption seat 34 descends, it is sleeved outside the support rod 12, and the rib plate 416 inside the adsorption groove 35 directly sits on the top of the support rod 12.

[0048] In an embodiment of the present utility model, as Figure 5 shown, the pneumatic feeding assembly 4 includes an elastic feeding structure 41, a pneumatic pushing structure 42 and a screw moving structure 43. Among them, the elastic feeding structure 41 is arranged at the bottom of the bracket 15 and is located outside the adsorption seat 34. The pneumatic pushing structure 42 is arranged on the surface of the elastic feeding structure 41. One end of the pneumatic pushing structure 42 penetrates into the inside of the elastic feeding structure 41. The screw moving structure 43 is arranged at the bottom of the elastic feeding structure 41 and is connected to the elastic feeding structure 41.

[0049] It should be noted that the pneumatic feeding assembly 4 described in this embodiment is used to realize the automatic feeding operation of the rib plate 416, which effectively improves the working efficiency and has a good use effect.

[0050] Specifically, in use, the elastic feeding structure 41 is used to place multiple groups of rib plates 416, the pneumatic pushing structure 42 is used to push the rib plates 416 into the adsorption groove 35, and the screw moving structure 43 is used to assist the push plate 417 in the elastic feeding structure 41 to reset, which is time-saving and labor-saving and has a good use effect.

[0051] In an embodiment of the present invention, as Figures 5 - 6 shown, the elastic feeding structure 41 includes a fixed frame 411, an installation groove 412, a placement frame 413, a first through groove 414, a second through groove 415, a push plate 417 and a spring 418. Among them, the fixed frame 411 is bolted to the bottom of the bracket 15, the installation groove 412 is opened on the surface of the fixed frame 411, one end of the placement frame 413 is fixedly connected to the inner wall of the installation groove 412, the rib plate 416 is arranged inside the placement frame 413 and is slidably connected to the inner wall of the placement frame 413. The push plate 417 is horizontally slidably connected to the inner wall of the placement frame 413, and a spring 418 is fixedly connected between the push plate 417 and the inner wall of the placement frame 413. One end of the push plate 417 is in contact with the surface of the rib plate 416. First through grooves 414 and second through grooves 415 are respectively opened at positions corresponding to the surface of the placement frame 413 and the surface of the fixed frame 411 and are communicated with each other. The inside of the first through groove 414 and the inside of the second through groove 415 are respectively adapted to the outer dimension of the rib plate 416. Limiting plates 4131 are arranged at both the top and bottom of the placement frame, and the size of the limiting plates corresponds to the size of the inner wall of the installation groove, so that feeding ports 4132 are formed at the top and bottom of the placement frame, and a cover plate 4133 is covered on the feeding ports.

[0052] It should be noted that the elastic feeding structure 41 described in this embodiment is used for placing the rib plate 416 and realizing automatic replenishment of materials.

[0053] Specifically, in use, under the push of the pneumatic pushing structure 42, one end of the rib plate 416 passes through the positions of the first through groove 414 and the second through groove 415, then penetrates into the adsorption groove 35 and is slidably connected to the inner wall of the adsorption groove 35 and the top of the pneumatic support plate 37. After the rib plate 416 passes through, under the elastic force of the spring 418, the push plate 417 continues to squeeze other groups of rib plates 416 to move, realizing automatic replenishment of materials, with simple operation and good use effect.

[0054] In an embodiment of the present invention, as Figure 5 and Figure 7As shown in the figure, the pneumatic material pushing structure 42 includes a pneumatic push rod 421 and a push block 422. Among them, the pneumatic push rod 421 is fixedly connected to the outer surface of the fixed frame 411, and the push block 422 is slidably connected to the inner wall of the second through groove 415 and fixedly connected to one end of the pneumatic push rod 421.

[0055] It should be noted that the pneumatic material pushing structure 42 described in this embodiment is used to push the rib plate 416 inside the placement frame 413 into the adsorption groove 35 to achieve the feeding operation, and the use effect is good.

[0056] Specifically, when the pneumatic push rod 421 operates by being ventilated, it drives the push block 422 to move synchronously. During the movement of the push block 422, it synchronously pushes the rib plate 416 corresponding to the position of the first through groove 414 to move. One end of the rib plate 416 passes through the positions of the first through groove 414 and the second through groove 415, and then penetrates into the adsorption groove 35 and is slidably connected to the inner wall of the adsorption groove 35 and the top of the pneumatic support plate 37.

[0057] In an embodiment of the present invention, as Figure 5 and Figure 8 shown, the screw moving structure 43 includes a base 431, a transverse threaded lead screw 432, an adjusting handle 433, a sliding seat 434, an opening 435, and a locking bolt 436. Among them, the base 431 is symmetrically and fixedly connected to the bottom of the placement frame 413, the transverse threaded lead screw 432 is rotatably connected to the inner wall of the base 431, one end of the transverse threaded lead screw 432 penetrates out of the base 431, and is fixedly connected with an adjusting handle 433. The sliding seat 434 is threadedly connected to the outer surface of the transverse threaded lead screw 432 and is slidably connected to the bottom of the placement frame 413. The opening 435 is opened at the top of the sliding seat 434. A convex block 4171 is provided at the position corresponding to the bottom of the push plate 417. The convex block 4171 is located inside the opening 435 and is slidably connected to the inner wall of the opening 435. The convex block 4171 and the opening 435 are connected by a locking bolt 436.

[0058] It should be noted that the screw moving structure 43 described in this embodiment is used to assist the push plate 417 to reset, so as to facilitate the placement of the rib plate 416, and the use effect is good.

[0059] It should also be noted that limiting sliding grooves (not shown in the figure) are respectively opened on the bottom of the placement frame 413 and the inner bottom wall of the installation groove 412 and are communicated with each other. The convex block 4171 and the top of the sliding seat 434 are respectively slidably connected to the inner wall of the limiting sliding groove.

[0060] It can be understood that manually turning the adjustment handle 433 is relatively slow. Therefore, a driving groove (not shown in the figure) is provided on the surface of the adjustment handle 433. The driving groove (not shown in the figure) can be connected to one end of an external pistol drill. By the mutual cooperation of the external pistol drill and the driving groove, the adjustment handle 433 is driven to rotate, effectively improving the operation efficiency.

[0061] Specifically, when in use, turn the adjustment handle 433. The rotation of the adjustment handle 433 synchronously drives the rotation of the horizontal threaded screw rod 432. The rotation of the horizontal threaded screw rod 432 synchronously drives the sliding seat 434 to move along the bottom of the fixed frame 411 in a direction away from the adjustment handle 433 until it moves to the end of one end of the horizontal threaded screw rod 432. When it moves to the end of one end of the horizontal threaded screw rod 432, the convex block 4171 is located inside the opening 435. Then tighten the locking bolt 436 to fixedly connect the convex block 4171 and the opening 435. Then reverse the adjustment handle 433. The rotation of the adjustment handle 433 synchronously drives the rotation of the horizontal threaded screw rod 432. The rotation of the horizontal threaded screw rod 432 synchronously drives the sliding seat 434 to move along the bottom of the fixed frame 411 in a direction towards the adjustment handle 433. The movement of the sliding seat 434 drives the convex block 4171 to move synchronously through the mutual cooperation of the opening 435 and the locking bolt 436. The movement of the convex block 4171 synchronously drives the push plate 417 to move inside the placement frame 413 and compress the spring 418. By moving the push plate 417, it is convenient to place the rib plate 416, and the use effect is good.

[0062] In an embodiment of the present utility model, as Figures 5 - 9 shown, the width of the support rod 12 is the same as the inner diameter of the adsorption groove 35 and the thickness of the rib plate 416, and the height of the push block 422 is the same as the height of the rib plate 416 and the height between the top of the pneumatic support plate 37 and the inner top wall of the adsorption groove 35.

[0063] Specifically, further limit the height of the support rod 12, the adsorption groove 35, the push block 422 and the height between the top of the pneumatic support plate 37 and the inner top wall of the adsorption groove 35 to make it adapt to the rib plate 416, and the use effect is good.

[0064] In summary, for a welding device of an industrial robot in an embodiment of the present utility model, through the plate placing mechanism 100, it can ensure that the rib plate 416 is quickly and accurately placed inside the frame 200 and is in close contact with the inner side wall of the frame 200, without multiple position adjustments, thus greatly improving the speed and convenience of placing the rib plate 416. At the same time, this device also adopts laser welding technology. This device does not contact the weld during the welding process, thereby eliminating the possible shaking in the traditional welding method and further improving the welding quality between the rib plate 416 and the frame 200, and the use effect is good.

[0065] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] The above-described embodiments merely represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A welding device for an industrial robot, characterized in that: include: A frame, a laser welding mechanism disposed in the frame, a plate placing mechanism disposed on one side of the top of the frame, and a limiting assembly disposed on the other side of the top of the frame, wherein the limiting assembly is used to limit the first workpiece to be welded; The plate placement mechanism includes a pneumatic discharge assembly arranged above the limit assembly, and a pneumatic loading assembly adapted to the pneumatic discharge assembly, the pneumatic loading assembly includes an elastic loading structure and a pneumatic pushing structure arranged on one side of the elastic loading structure, the elastic loading structure includes a placement frame, and a push plate connected to the placement frame through an elastic member, so that a plurality of second parts to be welded are squeezed and limited in the placement frame, and a first through slot is provided on one side of the placement frame, so that the second parts to be welded are pushed out of the placement frame through the first through slot by the pneumatic pushing structure and enter the pneumatic discharge assembly; The pneumatic discharge assembly includes a pneumatic lifting rod, a synchronous plate connected to the bottom of the pneumatic lifting rod, and a plurality of adsorption seats connected to the bottom of the synchronous plate, the adsorption seat is used to adsorb the second part to be welded entering the pneumatic discharge assembly, the pneumatic lifting rod is used to place the second part to be welded in the adsorption seat on the limiting assembly, and it is adapted to the first part to be welded; The laser welding mechanism includes an electric lifting assembly and a plurality of laser welding heads connected to the electric lifting assembly, and the electric lifting assembly is used to drive the laser welding head to lift and weld the welding point between the second part to be welded and the first part to be welded.

2. The welding device of an industrial robot according to claim 1, characterized in that: The elastic feeding structure also includes a fixed frame installed on the frame, a mounting groove opened at one end of the fixed frame and a second through groove opened at one side of the fixed frame, the mounting groove is used to install the placement frame so that the second through groove is connected to the first through groove, and limit plates are provided on the top and bottom of the placement frame, and the size of the limit plates corresponds to the size of the inner wall of the mounting groove, so that a feed port is formed at the top and bottom of the placement frame, and a cover plate is covered on the feed port.

3. The welding device of an industrial robot according to claim 1, characterized in that: The limiting assembly includes a rectangular through slot opened on the top of the frame, a plurality of support rods arranged in the rectangular through slot, a pneumatic clamp seat and an L-shaped positioning frame arranged on the top of the frame, wherein the pneumatic clamp seat and the L-shaped positioning frame are respectively arranged on both sides of the rectangular through slot, the pneumatic clamp seat can move towards or away from the direction of the L-shaped positioning frame, and the support rod corresponds to the second part to be welded.

4. The welding device of an industrial robot according to claim 1, characterized in that: The pneumatic discharge assembly also includes an adsorption groove opened at the bottom of the adsorption seat, a plurality of negative pressure holes arranged on the adsorption seat, a pneumatic support plate, a damping pad and an air pipe joint. The adsorption groove runs through both ends of the adsorption seat, one end of the plurality of negative pressure holes is respectively laid on the two inner walls of the adsorption groove, the other end of the negative pressure hole is connected to the air pipe joint, the pneumatic support plate is arranged at the bottom of the adsorption groove, and the damping pad is arranged at one end of the adsorption groove.

5. The welding device of an industrial robot according to claim 4, characterized in that: The two ends of the top of the synchronous plate are arranged on vertical guide rods, and the vertical guide rods are slidably connected with the bracket.

6. The welding device of an industrial robot according to claim 1, characterized in that: The pneumatic pushing structure includes a pneumatic push rod and a push block connected to the pneumatic push rod, and the push block is adapted to the first through slot.

7. The welding device of an industrial robot according to claim 1, characterized in that: The pneumatic feeding assembly also includes a screw moving structure, which includes base plates arranged at both ends of the bottom of the placement frame, a transverse threaded screw arranged between the two base plates, an adjustment handle arranged at one end of the transverse threaded screw, a sliding seat sleeved on the transverse threaded screw, and a connecting component connected to the sliding seat, and the connecting component is detachably connected to the push plate to drive the push plate to move.

8. The welding device of an industrial robot according to claim 7, characterized in that: The connecting component includes an opening portion opened at the top of the slide seat, a fixing bolt arranged on the slide seat, and a protrusion connected to the bottom of the push plate. The protrusion is provided with a through hole adapted to the fixing bolt, and the protrusion is adapted to the opening portion so that the protrusion is fixed in the opening portion.

9. The welding device of an industrial robot according to claim 1, characterized in that: The electric lifting assembly includes a driving motor installed inside the frame, a vertical threaded screw connected to the driving motor, a threaded sleeve sleeved on the vertical threaded screw, a connecting plate seat installed on the threaded sleeve, and a plurality of laser head positioning frames arranged on the connecting plate seat, and the laser head positioning frames are used to install the laser welding head.

10. The welding device of an industrial robot according to claim 9, characterized in that: Welding mounting parts are respectively extended from both ends of the connecting plate seat, and the laser head positioning frames are respectively arranged on both sides of the welding mounting parts. The laser head positioning frames arranged on one side of the welding mounting parts are symmetrically arranged in groups of two, and oblique mounting holes are respectively opened on the sides close to each other in a group of two laser head positioning frames, and the oblique mounting holes are used to install the laser welding head.

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