Arc welding machine for metal work

Abstract

The present application relates to the technical field of metal piece welding, in particular to an arc welding machine for metal piece processing, comprising a screw storage groove, a plurality of groups of piece taking mechanisms in a circumferential array are slidably connected in the interior of a polygonal rotating disc, two groups of butt joint structures in a circumferential array are fixedly connected to the outer wall of a rotating shaft, a welding support frame is fixedly connected to the top of the welding support frame, and a welding gun is arranged at the bottom of the welding support frame. The present application solves the problem of inconsistent directions of bulk screws by using magnetic attraction and mechanical baffles. Regardless of the direction of the screw being attracted, it can be uniformly corrected to the correct posture with the head facing outward, ensuring the consistency of assembly. The retraction sequence of the magnet block is controlled by the angle-lacking limiting disc to release the middle part first and then the end part, and the limiting action of the metal plate round hole on the tail end of the screw is utilized to complete the separation relying on the rigidity of the screw itself, realizing the automation from the feeding of bulk screws, direction correction, center positioning, pre-assembly with the metal plate to the final welding and discharging.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, and in particular to an arc welding machine for metal processing. Background Technology

[0002] Countersunk small self-tapping cement screws are welded to metal plates primarily for prefabrication, enabling a quick and secure connection between the metal plate and the substrate (such as cement or brick walls). After welding, the screw shaft is exposed. During installation, simply align the metal plate with a pre-drilled hole in the cement wall, ceiling, or other substrate, and then screw it in directly with an electric screwdriver. The screw utilizes its self-tapping threads to create a strong mechanical lock within the cement substrate.

[0003] If welding is not used, the traditional installation method involves one person aligning the screw with the hole on the metal plate and holding it in place while another person, or someone using tools, welds it in place from the other side. This process is extremely slow, inefficient, and requires skilled workers to ensure quality.

[0004] The invention patent with authorization announcement number CN119216730B discloses an automatic arc welding machine for processing countersunk small self-tapping cement screws, including an operating platform and a robotic arm for picking up screws, as well as a welding gun for welding screws and plates. A housing is installed on the upper side of the operating platform, and a support frame for conveying screws is installed inside the housing. The support frame has first grooves for placing screws symmetrically opened on both sides. A movable frame for advancing screws is movably installed between the operating platforms. A drive motor for driving the movable frame is installed on the side wall of the support frame. A support platform is installed on the upper side of the operating platform, and a detection head for checking the screw orientation is installed on the side of the support platform. A conversion seat for adjusting the screw orientation is installed on the upper side of the operating platform.

[0005] However, the aforementioned invention patent still has the following drawbacks: The equipment integrates a robotic arm, a three-axis electric slide, multiple gear transmission mechanisms, pulley sets, cylinders, rack and pinion pairs, a motor, and a complex detection and flipping mechanism, only achieving screw delivery; the subsequent connection of the welded metal plate and screw still requires the robotic arm. Although the goal is automation, the entire process is executed sequentially: feeding, detection, lifting and flipping, alignment, robotic arm gripping, and welding, resulting in extremely low overall production efficiency. The solution mentions that the operator "places" the screw on the surface of the support frame, relying on the grooves to fall in naturally. This is still a manual or semi-automatic feeding process. If the feeding is discontinuous or uneven, it may cause the feeding mechanism to idle or jam, failing to fully automate the entire process from bulk material to finished product. Therefore, an arc welding machine for metal parts processing is proposed to solve the aforementioned problems. Summary of the Invention

[0006] The purpose of this invention is to solve the problems in the background art by providing an arc welding machine for metal parts processing.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An arc welding machine for processing metal parts includes a screw storage slot. Two fixed frames are fixed to the top of the screw storage slot. A drive motor is fixed to the outer wall of one of the fixed frames. A polygonal rotating disk is fixed to the output shaft of the drive motor. A corner-limiting disc is fixed to the outer wall of the other fixed frame. Several sets of part-picking mechanisms arranged in a circular array are slidably connected inside the polygonal rotating disk. The drive motor is fixed to the top of the screw storage slot. A rotating shaft is fixed to the output shaft of the drive motor. Two sets of docking structures arranged in a circular array are fixed to the outer wall of the rotating shaft.

[0009] The part-retrieving mechanism includes an end magnetic block and a middle magnetic block. A connecting rod is fixedly connected to one side of both the end magnetic block and the middle magnetic block. Both connecting rods are slidably connected to the polygonal rotating disk. A sliding rod is fixedly connected to one side of both connecting rods. Both sliding rods are slidably connected to the corner-limiting disc.

[0010] The docking mechanism includes a second connecting rod, which is fixedly connected to a rotating shaft. A gear is rotatably connected to one side of the second connecting rod, and a part-retrieving seat is fixedly connected to the side of the gear away from the second connecting rod. A rack meshes with the outer wall of the gear, and a height sliding rod is fixedly connected to the bottom of the rack.

[0011] A fixed disc is rotatably connected to the outer wall of the rotating shaft. A welding support frame is fixedly connected to one end of the fixed disc. The welding support frame is fixedly connected to the screw storage slot. A welding frame is fixedly connected to the top of the welding support frame. A welding gun is provided at the bottom of the welding frame.

[0012] Preferably, a height limiting groove is provided on the fixed disc, and the height sliding rod is slidably connected to the fixed disc through the height limiting groove.

[0013] Preferably, a bearing seat is slidably connected inside the screw storage slot, and a telescopic rod is fixedly connected between the bearing seat and the screw storage slot.

[0014] Preferably, the top of the screw storage slot is provided with two sets of symmetrically distributed head-to-tail reordering mechanisms and screw centering mechanisms.

[0015] Preferably, the head-to-tail reordering mechanism includes a second fixed frame, a first fixed plate fixedly connected to the top of the second fixed frame, and two orientation adjustment plates slidably connected to one side of the first fixed plate.

[0016] Preferably, the screw centering mechanism includes a fixing frame three, with a mounting plate slidably connected to the top of the fixing frame three, and a gradually thickening centering plate fixed to the end of the mounting plate.

[0017] Preferably, a storage box is provided opposite the welding support frame. The storage box is fixedly connected to the screw storage slot. Several metal plates are placed inside the storage box, and a retrieval slot is provided at the bottom of the storage box.

[0018] Preferably, a feeding box is fixedly connected to one side of the screw storage slot, and a picking rod is fixedly connected to one side of the picking seat.

[0019] Compared with existing technologies, the advantages of this invention are as follows:

[0020] This invention, through an adjustable orientation adjustment plate and a gradually thickening centering plate, can flexibly adapt to screws with various head sizes and rod diameters, enhancing the versatility and flexibility of the equipment. Utilizing magnetic attraction and mechanical baffles, it cleverly solves the problem of inconsistent orientation of loose screws. Regardless of the screw's orientation when attracted, it can be uniformly corrected to the correct head-outward posture, ensuring assembly consistency. The retraction sequence of the magnet is controlled by a notched limiting disc, releasing the middle part first, then the end. The limiting effect of the metal plate's circular hole on the screw's tail end achieves precise pre-positioning of the screw and metal plate, ultimately relying on the screw's own rigidity to complete separation. The design is ingenious and reliable. The part-retrieving seat automatically picks up new metal plates while completing the unloading process, achieving continuous material supply and automatic collection of finished products, forming a highly efficient production closed loop. It automates the entire process from loading loose screws, orientation correction, centering positioning, pre-assembly with metal plates, to final welding and unloading. The structure is simple and efficient, greatly reducing manual intervention and improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is the present invention. Figure 1 Schematic diagram of the structure at point A in the middle;

[0023] Figure 3 This is the present invention. Figure 1 Schematic diagram of the structure at point B;

[0024] Figure 4 This is a schematic diagram of the internal structure of the screw storage slot of the present invention;

[0025] Figure 5 This is the present invention. Figure 4 Schematic diagram of the structure at point C;

[0026] Figure 6 This is a schematic diagram of the docking mechanism structure of the present invention;

[0027] Figure 7 This is the present invention. Figure 6 Schematic diagram of the structure at point D;

[0028] Figure 8 This is a schematic diagram of the bottom structure of the storage box of the present invention.

[0029] In the diagram: 1. Screw storage slot; 2. Fixing frame one; 3. Fixing frame two; 4. Fixing frame three; 5. Polygonal rotating disk; 6. End magnetic block; 7. Middle magnetic block; 8. Welding frame; 9. Welding gun; 10. Storage box; 11. Metal plate; 12. Rotating shaft; 13. Drive motor one; 14. Unloading box; 15. Drive motor two; 16. Fixing plate one; 17. Orientation adjustment plate; 18. Gradually thickening centering plate; 19. Mounting plate; 20. Slide rod one; 21. Connecting rod one; 22. Corner limiting disc; 23. Bearing seat; 24. Telescopic rod; 25. Welding support frame; 26. Connecting rod two; 27. Gear; 28. Height slide rod; 29. ​​Rack; 30. Picking seat; 31. Picking rod; 32. Height limiting groove; 33. Fixing disk; 34. Picking slot. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Reference Figures 1-8 An arc welding machine for metal parts processing includes a screw storage slot 1. Two fixed frames 2 are fixedly connected to the top of the screw storage slot 1. A drive motor 15 is fixedly connected to the outer wall of one of the fixed frames 15. A polygonal rotating disk 5 is fixedly connected to the output shaft of the drive motor 15. A corner-limiting disc 22 is fixedly connected to the outer wall of the other fixed frame 12. Several sets of part-picking mechanisms arranged in a circular array are slidably connected inside the polygonal rotating disk 5. A drive motor 13 is fixedly connected to the top of the screw storage slot 1. A rotating shaft 12 is fixedly connected to the output shaft of the drive motor 13. Two sets of docking structures arranged in a circular array are fixedly connected to the outer wall of the rotating shaft 12.

[0033] The screw storage slot 1 is internally slidably connected to a bearing seat 23, and a telescopic rod 24 is fixedly connected between the bearing seat 23 and the screw storage slot 1.

[0034] In this embodiment, the screw is in the screw storage slot 1. The screw storage slot 1 is inclined with high sides and low middle. The telescopic rod 24 in the middle reciprocates and extends. The bearing seat 23 and the central magnetic block 7 on the polygonal rotating disk 5 are arranged perpendicularly. After the screw falls into the bearing seat 23, the telescopic rod 24 extends and can send the screw to the central magnetic block 7 and be attracted by the central magnetic block 7. At this time, both ends of the screw are suspended.

[0035] The top of the screw storage slot 1 is equipped with two sets of symmetrically distributed head-to-tail reordering mechanisms and screw centering mechanisms.

[0036] The head-to-tail reordering mechanism includes a second fixed frame 3, a first fixed plate 16 is fixedly connected to the top of the second fixed frame 3, and two orientation adjustment plates 17 are slidably connected to one side of the first fixed plate 16.

[0037] The screw centering mechanism includes a fixing bracket 3 4, with a mounting plate 19 slidably connected to the top of the fixing bracket 3 4, and a gradually thickening centering plate 18 fixed to the end of the mounting plate 19.

[0038] In this embodiment, the drive motor 215 rotates intermittently in conjunction with the telescopic rod 24. To accommodate screws of various sizes, the two orientation adjustment plates 17 can be adjusted so that the distance between the orientation adjustment plates 17 can accommodate the screw to pass through, but will block the screw. Therefore, when the polygonal rotating disk 5 rotates, the screw perpendicular to the central magnetic block 7 will abut against the orientation adjustment plate 17 on the corresponding side, regardless of which side its head is on, so that the screw rotates and its head is attracted to the end magnetic block 6. At this time, the tail end of the screw is suspended, which is convenient for subsequent alignment. Similarly, the distance between the two gradually thickening centering plates 18 can be adjusted. The spacing at the thickest part of the gradually thickening centering plate 18 can accommodate the head of the screw to pass through, so that the screw is located in the middle of the central magnetic block 7 and the end magnetic block 6 after passing through the gradually thickening centering plate 18.

[0039] The part-retrieving mechanism includes an end magnetic block 6 and a middle magnetic block 7. A connecting rod 21 is fixedly connected to one side of both the end magnetic block 6 and the middle magnetic block 7. Both connecting rods 21 are slidably connected to the polygonal rotating disk 5. A sliding rod 20 is fixedly connected to one side of both connecting rods 21. Both sliding rods 20 are slidably connected to the corner-limiting disc 22.

[0040] In this embodiment, when the screw rotates to the top of the metal plate 11, the tail end of the screw is inserted into the central circular hole of the metal plate 11 as it rotates. The central magnetic block 7 first moves to the corner of the notched limiting disk 22 and retracts into the polygonal rotating disk 5. At this time, the head of the screw is attracted by the end magnetic block 6, and the tail end is limited by the metal plate 11. Then, the slide bar 20 on the end magnetic block 6 moves to the corner of the notched limiting disk 22, and the end magnetic block 6 also retracts into the polygonal rotating disk 5. Since the screw itself is straight and rigid, when most of the screw is fully inserted into the metal plate 11, the end magnetic block 6 automatically separates from the screw as the polygonal rotating disk 5 rotates, completing the assembly of the screw and the metal plate 11.

[0041] The docking mechanism includes a second connecting rod 26, which is fixedly connected to the rotating shaft 12. A gear 27 is rotatably connected to one side of the connecting rod 26. A pick-up seat 30 is fixedly connected to the side of the gear 27 away from the connecting rod 26. A rack 29 meshes with the outer wall of the gear 27. A height slide rod 28 is fixedly connected to the bottom of the rack 29.

[0042] A fixed disc 33 is rotatably connected to the outer wall of the rotating shaft 12. A welding support frame 25 is fixedly connected to one end of the fixed disc 33. The welding support frame 25 is fixedly connected to the screw storage slot 1. A welding frame 8 is fixedly connected to the top of the welding support frame 25. A welding gun 9 is provided at the bottom of the welding frame 8.

[0043] A height limiting groove 32 is provided on the fixed disc 33, and the height sliding rod 28 is slidably connected to the fixed disc 33 through the height limiting groove 32.

[0044] A storage box 10 is provided opposite the welding support frame 25. The storage box 10 is fixedly connected to the screw storage slot 1. Several metal plates 11 are placed inside the storage box 10. A retrieval slot 34 is provided at the bottom of the storage box 10.

[0045] A feeding box 14 is fixedly connected to one side of the screw storage slot 1, and a picking rod 31 is fixedly connected to one side of the picking seat 30.

[0046] In this embodiment, the drive motor 13 then drives the rotating shaft 12 to rotate 90 degrees, so that the assembled metal part is located below the welding gun 9. After the welding gun 9 is completed, it moves to the protruding part of the height limiting slide 32. The height slide 28 drives the rack 29 to move upward, so that the pick-up seat 30 flips over and drops the welded metal part into the unloading box 14. When the pick-up seat 30, with the pick-up rod 31, passes under the storage box 10, the pick-up rod 31 automatically pushes out the bottom metal plate 11, and the pick-up seat 30 carries the new metal plate 11.

[0047] The working principle and usage of the present invention are explained in detail below: The screw is in the screw storage slot 1. The screw storage slot 1 is inclined with high sides and low middle. The telescopic rod 24 in the middle reciprocates and extends. The bearing seat 23 and the central magnetic block 7 on the polygonal rotating disk 5 are arranged perpendicularly. After the screw falls into the bearing seat 23, the telescopic rod 24 extends and can send the screw to the central magnetic block 7 and be attracted by the central magnetic block 7. At this time, both ends of the screw are suspended.

[0048] The drive motor 15 rotates intermittently in conjunction with the telescopic rod 24. To accommodate screws of various sizes, the two orientation adjustment plates 17 can be adjusted so that the distance between the orientation adjustment plates 17 can accommodate the screw rod, but will block the screw. Therefore, when the polygonal rotating disk 5 rotates, the screw perpendicular to it on the central magnetic block 7 will abut against the orientation adjustment plate 17 on the corresponding side, regardless of which side its head is on, thus causing the screw to rotate. The head of the screw is attracted to the end magnetic block 6. At this time, the tail end of the screw is suspended, which is convenient for subsequent docking.

[0049] Similarly, the distance between the two gradually thickening centering plates 18 is adjustable. The spacing at the thickest part of the gradually thickening centering plates 18 can accommodate the head of the screw, so that after the screw passes through the gradually thickening centering plates 18, it is located between the middle magnetic block 7 and the end magnetic block 6. When the screw rotates to the top of the metal plate 11, the tail end of the screw is inserted into the central circular hole of the metal plate 11 as it rotates. The middle magnetic block 7 first moves to the corner notch of the notch limiting disk 22 and retracts into the polygonal rotating disk 5. At this time, the head of the screw is attracted by the end magnetic block 6, and the tail end is limited by the metal plate 11. Then, the slide bar 20 on the end magnetic block 6 moves to the corner notch of the notch limiting disk 22, and the end magnetic block 6 also retracts into the polygonal rotating disk 5. Since the screw itself is straight and rigid, when most of the screw is fully inserted into the metal plate 11, the end magnetic block 6 automatically separates from the screw as the polygonal rotating disk 5 rotates, completing the assembly of the screw and the metal plate 11.

[0050] Subsequently, the drive motor 13 drives the rotating shaft 12 to rotate 90 degrees, so that the assembled metal part is located below the welding gun 9. After the welding gun 9 is completed, it moves to the protruding part of the height limit slide 32. The height slide 28 drives the rack 29 to move upward, so that the pick-up seat 30 flips over and drops the welded metal part into the unloading box 14. When the pick-up seat 30, with the pick-up rod 31, passes under the storage box 10, the pick-up rod 31 automatically pushes out the bottom metal plate 11, and the pick-up seat 30 carries the new metal plate 11.

[0051] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An arc welding machine for metal parts processing, comprising a screw storage slot (1), characterized in that, The top of the screw storage slot (1) is fixed with two fixed brackets (2). One of the fixed brackets (2) is fixed with a drive motor (15) on its outer wall. The output shaft of the drive motor (15) is fixed with a polygonal rotating disk (5). The outer wall of the other fixed bracket (2) is fixed with a corner-limiting disc (22). The polygonal rotating disk (5) is slidably connected with several sets of retrieval mechanisms arranged in a circular array. The top of the screw storage slot (1) is fixed with a drive motor (13). The output shaft of the drive motor (13) is fixed with a rotating shaft (12). The outer wall of the rotating shaft (12) is fixed with two sets of docking structures arranged in a circular array. The picking mechanism includes an end magnetic block (6) and a middle magnetic block (7). A connecting rod (21) is fixedly connected to one side of both the end magnetic block (6) and the middle magnetic block (7). Both connecting rods (21) are slidably connected to the polygonal rotating disk (5). A sliding rod (20) is fixedly connected to one side of both connecting rods (21). Both sliding rods (20) are slidably connected to the corner-limiting disc (22). The docking mechanism includes a second connecting rod (26), which is fixedly connected to a rotating shaft (12). A gear (27) is rotatably connected to one side of the second connecting rod (26). A pick-up seat (30) is fixedly connected to the side of the gear (27) away from the second connecting rod (26). A rack (29) meshes with the outer wall of the gear (27). A height slide rod (28) is fixedly connected to the bottom of the rack (29). A fixed disc (33) is rotatably connected to the outer wall of the rotating shaft (12). A welding support frame (25) is fixedly connected to one end of the fixed disc (33). The welding support frame (25) is fixedly connected to the screw storage slot (1). A welding frame (8) is fixedly connected to the top of the welding support frame (25). A welding gun (9) is provided at the bottom of the welding frame (8).

2. The arc welding machine for metal parts processing according to claim 1, characterized in that: A height limiting groove (32) is provided on the fixed disc (33), and the height sliding rod (28) is slidably connected to the fixed disc (33) through the height limiting groove (32).

3. The arc welding machine for metal parts processing according to claim 1, characterized in that: The screw storage slot (1) has a sliding connection to a bearing seat (23), and a telescopic rod (24) is fixed between the bearing seat (23) and the screw storage slot (1).

4. The arc welding machine for metal parts processing according to claim 1, characterized in that: The top of the screw storage slot (1) is provided with two sets of symmetrically distributed head-to-tail reordering mechanisms and screw centering mechanisms.

5. The arc welding machine for metal parts processing according to claim 4, characterized in that: The head-to-tail reordering mechanism includes a second fixed frame (3), a first fixed plate (16) is fixedly connected to the top of the second fixed frame (3), and two orientation adjustment plates (17) are slidably connected to one side of the first fixed plate (16).

6. The arc welding machine for metal parts processing according to claim 4, characterized in that: The screw centering mechanism includes a fixing frame three (4), the top of which is slidably connected to a mounting plate (19), and the end of the mounting plate (19) is fixedly connected to a gradually thickening centering plate (18).

7. The arc welding machine for metal parts processing according to claim 1, characterized in that: A storage box (10) is provided opposite the welding support frame (25). The storage box (10) is fixedly connected to the screw storage slot (1). Several metal plates (11) are placed inside the storage box (10). A retrieval slot (34) is provided at the bottom of the storage box (10).

8. The arc welding machine for metal parts processing according to claim 1, characterized in that: A feeding box (14) is fixedly connected to one side of the screw storage slot (1), and a picking rod (31) is fixedly connected to one side of the picking seat (30).

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