A welding device for metal display stand production

Abstract

The application relates to the technical field of welding devices, in particular to a welding device for metal display stand production, which comprises a base, a multi-shaft mechanical arm arranged on the base, a welding gun arranged at the end of the multi-shaft mechanical arm, two supports symmetrically fixed to the base and a rectangular turnover frame, two groups of opposite sides of the turnover frame are a main rod and an auxiliary rod, two main rods are rotationally connected to opposite sides of the two supports respectively, mounting rods are slidably connected between the same side ends of the top parts of the two main rods, a plurality of clamps one are detachably connected to the opposite sides of the two mounting rods, and the clamps one are connected with clamps two through connecting rods. The application realizes the cooperative adjustment system of the bidirectional screw rod driving mounting rod spacing adjustment, the sliding groove two cooperating positioning pin realizing clamp transverse displacement fine adjustment and the connecting rod linkage type clamp two angle adjustment, so that the clamps one and the clamps two form a composite clamping network, the bending characteristic points and the overhanging positions of the special-shaped framework are accurately matched, and the distributed clamping of multiple stress points is realized.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for the production of metal display racks. Background Technology

[0002] Metal display racks, as an important carrier in the commercial display field, often use irregularly shaped tubing or complex geometric configurations for their frame structure. Traditional welding processes mostly use fixed clamps and manual adjustment of welding angles, which is time-consuming and labor-intensive. Currently, multi-axis robotic arms with welding guns are often used in conjunction with flip-frame clamps to adjust the posture of the frame through the flip-frame. However, in practical applications, it has been found that existing flip-frame clamps use rigid clamping units with equal spacing, and the spacing and angle of the clamping points cannot be adjusted. This leads to insufficient local clamping force, workpiece slippage, or even detachment when clamping irregularly shaped frames. This is especially true for frames with asymmetrical bending structures, where fixed clamps cannot simultaneously achieve coordinated clamping of the main force points and auxiliary support points. During the flip welding process, uneven stress distribution can easily cause workpiece deformation. In addition, existing clamps mostly use a single-point independent locking mode, which requires point-by-point adjustment when clamping in batches, significantly increasing auxiliary operation time. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a welding device for the production of metal display racks.

[0004] Technical solution: A welding device for producing metal display racks includes a base, a multi-axis robotic arm mounted on the base, a welding torch mounted on the end of the multi-axis robotic arm, two supports symmetrically fixed to the base, and a rectangular flipping frame. The two opposite sides of the flipping frame are main rods and auxiliary rods, respectively. The two main rods are rotatably connected to the opposite sides of the two supports. Mounting rods are slidably connected between the top ends of the two main rods on the same side. Multiple clamps are detachably connected to the opposite sides of the two mounting rods. Clamps are connected to clamps via connecting rods. Clamps can rotate around clamps to change the clamping point.

[0005] Furthermore, both clamp one and clamp two include a fixed frame, a fixed clamping plate, a movable clamping plate, and a screw. The fixed clamping plate is fixedly connected to the fixed frame, and a sliding groove is opened on the fixed frame. The movable clamping plate is partially slidably connected in the sliding groove, and the screw is rotatably connected in the sliding groove. The movable clamping plate and the screw are threadedly connected. The fixed frame of clamp one is detachably connected to the mounting rod, and the two ends of the connecting rod are respectively hinged to the fixed frame of clamp two and the fixed clamping plate of clamp one.

[0006] Furthermore, each of the fixtures has a slidably connected positioning pin on its fixing frame, and each of the two mounting rods has a sliding groove on its opposite side. The fixing frame of the fixture is slidably connected in the sliding groove. Each of the two mounting rods has multiple positioning holes communicating with the sliding groove on its opposite side. The positioning pin can cooperate with any of the positioning holes to fix the fixing frame of the fixture.

[0007] Furthermore, both main rods are rotatably connected to bidirectional lead screws, and the ends of the two mounting rods on the same side are respectively threaded to the two threaded sections of the bidirectional lead screws.

[0008] Furthermore, gears are detachably connected to the top of the screws of all the clamps on the mounting rod. A movable rod is slidably connected to the mounting rod, and an elastic element is connected to one end of the movable rod to the mounting rod. The movable rod is detachably connected to a number of racks equal to the number of gears, and the teeth of the racks mesh with the gears.

[0009] Furthermore, at least one support is provided with a drive motor for driving the tilting frame to rotate.

[0010] Furthermore, the connecting rod has a telescopic structure.

[0011] Furthermore, the support is a liftable structure.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. This invention utilizes a coordinated adjustment system that includes bidirectional lead screw driving the installation rod spacing adjustment, sliding groove two cooperating with positioning pin to achieve fine adjustment of the lateral displacement of the clamp, and linkage-type clamp two angle adjustment. This system enables clamp one and clamp two to form a composite clamping network, accurately matching the bending feature points and overhanging parts of the irregular skeleton, and achieving distributed clamping at multiple stress points.

[0014] 2. This invention uses gear and rack linkage, so that a single push-pull action of the moving rod can synchronously drive the screws of all clamps on the same mounting rod to rotate, realizing the synchronous locking or unlocking of batch clamps, which can reduce clamping time compared with the traditional point-by-point adjustment method. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the installation structure of the flipping frame and support of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation structure of the mounting rod and the flipping frame of the present invention.

[0018] Figure 4 This is a cross-sectional view of the mounting structure of the main rod of the present invention.

[0019] Figure 5 This is a schematic diagram of the installation structure of clamp one, clamp two and mounting rod of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the clamp and connecting rod of the present invention.

[0021] Figure 7 This is a partial structural diagram of the gear and rack of the present invention.

[0022] Figure 8 This is a partial structural cross-sectional view of the mounting rod and fixing frame of the present invention.

[0023] Reference numerals: 1-Base, 2-Multi-axis robotic arm, 3-Welding torch, 4-Support, 5-Tilting frame, 501-Main rod, 502-Secondary rod, 6-Mounting rod, 7-Clamp one, 8-Clamp two, 9-Connecting rod, 10-Fixed frame, 11-Fixed clamping plate, 12-Moving clamping plate, 13-Screw, 14-Slide groove one, 15-Positioning pin, 16-Slide groove two, 17-Positioning hole, 18-Gear, 19-Moving rod, 20-Elastic element, 21-Rack, 22-Double-actuated lead screw, 23-Drive motor. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-8 A welding device for producing metal display racks includes a base 1, a multi-axis robotic arm 2 mounted on the base 1, a welding torch 3 mounted on the end of the multi-axis robotic arm 2, two supports 4 symmetrically fixed to the base 1, and a rectangular flipping frame 5. In this embodiment, the supports 4 are liftable structures. The two sets of opposite sides of the flipping frame 5 are main rods 501 and secondary rods 502, respectively. The two main rods 501 are rotatably connected to the opposite sides of the two supports 4. Mounting rods 6 are slidably connected between the top ends of the two main rods 501 on the same side. Multiple clamps 7 can be detachably connected to the opposite sides of the two mounting rods 6. Clamps 7 are connected to clamps 8 via connecting rods 9. Clamps 8 can rotate around clamps 7 to change the clamping point. This composite clamping network design enables the invention to accurately match the bending feature points and overhanging parts of irregular skeletons, and realize distributed clamping of multiple stress points.

[0026] Furthermore, both clamp 7 and clamp 8 include a fixed frame 10, a fixed clamping plate 11, a movable clamping plate 12, and a screw 13. The fixed clamping plate 11 is fixedly connected to the fixed frame 10. The fixed frame 10 has a sliding groove 14. The movable clamping plate 12 is partially slidably connected to the sliding groove 14. The screw 13 is rotatably connected to the sliding groove 14. The movable clamping plate 12 and the screw 13 are threadedly connected. The fixed frame 10 of clamp 7 is detachably connected to the mounting rod 6. The two ends of the connecting rod 9 are respectively hinged to the fixed frame 10 of clamp 8 and the fixed clamping plate 11 of clamp 7. In this embodiment, the connecting rod 9 is a telescopic structure to expand the movement range of clamp 8.

[0027] To achieve fine-tuning of the lateral displacement of the fixture, this embodiment has locating pins 15 slidably connected to the fixing frame 10 of the fixture 7. The two mounting rods 6 have sliding grooves 16 on their opposite sides. The fixing frame 10 of the fixture 7 is partially slidably connected in the sliding grooves 16. The two mounting rods 6 have multiple positioning holes 17 communicating with the sliding grooves 16 on their opposite sides. The locating pins 15 can cooperate with any of the positioning holes 17 to fix the fixing frame 10 of the fixture 7. This design not only improves the positioning accuracy of the fixture, but also helps to adapt to skeletons of different sizes.

[0028] In order to drive the adjustment of the spacing between the mounting rods 6, this embodiment has a bidirectional lead screw 22 rotatably connected in both main rods 501. The ends of the two mounting rods 6 on the same side are respectively threaded to the two threaded sections of the bidirectional lead screw 22. By rotating the bidirectional lead screw 22 synchronously, the two mounting rods 6 can be driven to slide synchronously in opposite directions along the length of the main rod 501, thereby realizing the precise adjustment of the clamp spacing.

[0029] In addition, in this embodiment, a drive motor 23 is installed on the support 4 near the multi-axis robotic arm 2. The output shaft of the drive motor 23 is connected to the main rod 501 of the flipping frame 5. Through the drive of the drive motor 23, the spatial angle of the flipping frame 5 can be adjusted in real time to achieve three-dimensional all-round coverage welding of the frame.

[0030] Specifically, in use, firstly, the tilting frame 5 is raised to an appropriate height using the support 4. Then, by synchronously rotating the bidirectional lead screws 22 inside the two main rods 501, the two mounting rods 6 slide synchronously in opposite directions along the length of the main rods 501, thereby adjusting the distance between the clamps 7 on the two mounting rods 6 to accommodate frames of different lengths. By sliding the fixing frame 10 of clamp 7 along the slide groove 16 and inserting the corresponding positioning pins 15 into different positioning holes 17, the position of a single clamp 7 can be finely adjusted laterally. By rotating the operating link 9 around its hinge point with the fixed clamp plate 11 of clamp 7, the position of clamp 8 changes, and the fixing frame 10 of clamp 8 rotates around... The hinge point of the connecting rod 9 rotates, thereby changing the clamping point of the second clamp 8 to adapt to the multi-angle clamping of the irregular frame. Then, the frame of the display rack to be welded is placed between the fixed clamping plate 11 and the moving clamping plate 12 of the first clamp 7 and the second clamp 8. Then, by rotating the screw 13, the moving clamping plate 12 slides along the slide groove 14 and approaches the fixed clamping plate 11, thereby clamping the frame through the moving clamping plate 12 and the fixed clamping plate 11. After that, the welding gun 3 is driven by the multi-axis robotic arm 2 to move along the preset trajectory to weld the frame. At the same time, the rotating frame 5 can be driven by the drive motor 23 to rotate, and the spatial angle of the frame can be adjusted in real time to achieve three-dimensional all-round coverage welding of the frame.

[0031] To improve the batch clamping efficiency of fixture 7, in this embodiment, gears 18 are detachably connected to the top of the screws 13 of all fixtures 7 on the mounting rod 6. A moving rod 19 is slidably connected to the mounting rod 6. One end of the moving rod 19 is connected to the mounting rod 6 with an elastic element 20. The moving rod 19 is detachably connected with the same number of racks 21 as the gears 18. The teeth of the racks 21 mesh with the gears 18. The elastic element 20 is used to keep the moving rod 19 stable on the mounting rod 6 when it is not subjected to external force, and to provide a restoring force for the moving rod 19.

[0032] Specifically, in use, gear 18 is installed on the top of screw 13 of clamp 7, and rack 21 is correspondingly fastened to moving rod 19 with bolts. When rack 21 moves relative to gear 18, it can drive screw 13 of clamp 7 to rotate through gear 18, thereby driving moving clamp 12 to slide upward along slide groove 14. More specifically, when it is necessary to simultaneously release the clamps 7 on the same mounting rod 6 from the frame, the moving rod 19 is pushed to slide against the elastic force of elastic element 20, and rack 21 drives the corresponding gear 18 to rotate synchronously, so that the screws 13 of multiple clamps 7 are synchronized. Rotation causes the movable clamping plate 12 of clamp 7 to move upward away from the fixed clamping plate 11, thereby releasing clamp 7 from the skeleton. In this way, all clamps 7 on the same mounting rod 6 can be released synchronously in a single operation, improving the operating efficiency of clamp 7. Subsequently, the skeleton is removed from between the fixed clamping plate 11 and the movable clamping plate 12 of clamp 7, and the moving rod 19 is released. The elastic element 20 returns to its original shape by its own elasticity and drives the moving rod 19 to move in the opposite direction to reset. At the same time, under the meshing action of rack 21 and gear 18, screw 13 rotates in the opposite direction, driving the movable clamping plate 12 to slide in the opposite direction along the slide groove 14 to reset.

[0033] In summary, through a series of designs and innovations, this invention not only improves the adaptability and flexibility of welding equipment used in the production of metal display racks, but also helps to achieve precise clamping and all-around welding of irregularly shaped frames.

[0034] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for illustrative purposes only and is not intended to limit the invention; rather, the scope of protection is defined by the content of the claims.

Claims

1. A welding device for producing metal display racks, characterized in that, The system includes a base (1), a multi-axis robotic arm (2) mounted on the base (1), a welding torch (3) mounted on the end of the multi-axis robotic arm (2), two supports (4) symmetrically fixed to the base (1), and a rectangular flipping frame (5). The two opposite sides of the flipping frame (5) are a main rod (501) and a secondary rod (502). The two main rods (501) are rotatably connected to the opposite sides of the two supports (4). The top ends of the two main rods (501) are slidably connected to the same side. Multiple clamps (7) can be detachably connected to the opposite sides of the two clamps (6). The clamps (7) are connected to clamps (8) via connecting rods (9). The clamps (8) can rotate around the clamps (7) to change the clamping point. Both the first clamp (7) and the second clamp (8) include a fixed frame (10), a fixed clamp plate (11), a movable clamp plate (12), and a screw (13). The fixed clamp plate (11) is fixed to the fixed frame (10). The fixed frame (10) has a sliding groove (14). The movable clamp plate (12) is partially slidably connected to the sliding groove (14). The screw (13) is rotatably connected to the sliding groove (14). The movable clamp plate (12) is threadedly connected to the screw (13). The fixed frame (10) of the first clamp (7) is detachably connected to the mounting rod (6). The two ends of the connecting rod (9) are respectively hinged to the fixed frame (10) of the second clamp (8) and the fixed clamp plate (11) of the first clamp (7). The connecting rod (9) is a telescopic structure. The fixture (7) has a slidably connected positioning pin (15) on the fixing frame (10). The two mounting rods (6) have a sliding groove (16) on their opposite sides. The fixing frame (10) of the fixture (7) is partially slidably connected in the sliding groove (16). The two mounting rods (6) have multiple positioning holes (17) on their opposite sides that communicate with the sliding groove (16). The positioning pin (15) can cooperate with any of the positioning holes (17) to fix the fixing frame (10) of the fixture (7). Both main rods (501) are rotatably connected to a bidirectional lead screw (22), and the ends of the two mounting rods (6) on the same side are respectively threaded to the two threaded sections of the bidirectional lead screw (22); Gears (18) are detachably connected to the top of the screws (13) of all the clamps (7) on the mounting rod (6). A moving rod (19) is slidably connected to the mounting rod (6). One end of the moving rod (19) is connected to the mounting rod (6) with an elastic element (20). The moving rod (19) is detachably connected with the same number of racks (21) as the gears (18). The teeth of the racks (21) mesh with the gears (18).

2. The welding device for producing metal display racks according to claim 1, characterized in that, At least one of the supports (4) is provided with a drive motor (23) for driving the tilting frame (5) to rotate.

3. The welding device for producing metal display racks according to claim 2, characterized in that, The support (4) is a liftable structure.

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