Tool for metal welding

Abstract

The utility model belongs to the technical field of metal welding, and discloses a metal welding tool which comprises a protective fence, a mechanical arm, a positioning structure and a feeding assembly are arranged in the protective fence, a welding grabbing assembly is fixedly installed at the power output end of the mechanical arm, and the positioning structure is perpendicular to the feeding assembly. The positioning structure is located at the position close to one side of the welding grabbing assembly, the feeding assembly is located at the position of the other side of the welding grabbing assembly, and an aluminum profile assembly is detachably placed on the positioning structure. The automatic nut welding machine is simple in overall structure, nuts can be automatically welded to aluminum profiles of various models, manual operation intensity is reduced, nut welding efficiency is improved, and the using effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of metal welding technology, specifically, it relates to a tooling for metal welding. Background Technology

[0002] In metal joining processes, welding is a common and frequently used method for securing metals together. Metal welding is a technique that joins two or more metal materials together through heating. It has wide applications in industrial manufacturing and repair. Metal welding saves materials; compared to mechanical connections (such as bolts and rivets), welding does not require additional connecting parts, thus saving material costs. Furthermore, welding allows for precise dimensional control, reducing the need for additional machining and finishing.

[0003] Aluminum profiles are commonly used metal materials in the machinery field. To facilitate the connection between aluminum profiles or the attachment of other parts to them, nuts are usually installed on the aluminum profiles, such as... Figure 3 The image shows an aluminum profile assembly 5, which is a commonly used aluminum profile welding nut. It includes a profile 51 and a welding nut 52. The welding nut 52 is fixedly installed on the profile 51 by welding. This aluminum profile assembly 5 is used to assemble commonly used equipment brackets. The welding nut 52 makes it easy to assemble and disassemble commonly used modules on the equipment, and it has a high degree of versatility, which can save manufacturing costs. Common nut installation methods include T-nuts with aluminum profile mounting grooves and welding nuts on aluminum profiles. T-nuts, which are easy to install, cannot be accurately positioned. In the prior art, welding nuts on aluminum profiles usually uses simple tooling for positioning, and then manual welding is required. This cannot achieve mass production and increases the labor intensity of workers. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a metal welding fixture with a simple overall structure that can automatically weld nuts to various types of aluminum profiles, reduce manual operation intensity, improve the efficiency of nut welding, and improve the use effect.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A metal welding fixture includes a protective fence. Inside the protective fence, there is a robotic arm, a positioning structure, and a feeding assembly. A welding gripping assembly is fixedly installed at the power output end of the robotic arm. The positioning structure and the feeding assembly are arranged perpendicularly. The positioning structure is located on one side close to the welding gripping assembly, and the feeding assembly is located on the other side of the welding gripping assembly. An aluminum profile assembly is detachably placed on the positioning structure.

[0007] The following are further optimizations of the above technical solution by this utility model:

[0008] The welding gripping assembly includes a rotary cylinder fixedly installed at the power output end of the robotic arm. A mounting plate is fixedly installed at the rotating end of the rotary cylinder. A welding torch is fixedly installed on one side of the mounting plate, and a clamping cylinder is fixedly installed on the other side of the mounting plate. Multiple grippers in a ring array are fixedly installed at the power output end of the clamping cylinder.

[0009] Further optimization: The positioning structure includes a positioning bracket placed directly on the ground, located near the welding gripping component.

[0010] Further optimization: A first column is vertically arranged on one side of the upper surface of the positioning bracket, and a second column is vertically arranged on the other side of the upper surface of the positioning bracket, with the second column and the first column arranged symmetrically.

[0011] Further optimization: A first tightening component is provided at the middle position of the first column, and a second tightening component is provided at the middle position of the second column corresponding to the first tightening component.

[0012] Further optimization: The aluminum profile assembly can be detachably installed between the first clamping assembly and the second clamping assembly.

[0013] Further optimization: Multiple support columns are vertically arranged on the upper surface of the positioning bracket between the first column and the second column.

[0014] Further optimization: The first column and the second column are fixedly installed with the same crossbeam on their upper surfaces. An electric slide rod is fixedly installed on the end face of the crossbeam near the support column. The power output end of the electric slide rod is slidably connected to a telescopic cylinder. A clamping column is fixedly installed on the power output end of the telescopic cylinder.

[0015] Further optimization: The feeding component includes a feeding bracket placed on the ground, a guardrail fixedly installed at the middle position above the feeding bracket, a conveyor belt installed inside the guardrail, the conveyor belt being fixedly installed on the feeding bracket, and a motor being drivenly connected to one end of the conveyor belt, the motor being fixedly installed on the feeding bracket.

[0016] Further optimization: Position sensors are fixedly installed on both sides of the guardrail near the positioning structure.

[0017] This utility model adopts the above-mentioned technical solution, which is ingenious in conception and reasonable in structure. It can mass-produce profile welding nuts and uses a robotic arm to drive the welding gun for welding, avoiding contact with workers and affecting their health. At the same time, the welding process is completed automatically, improving welding efficiency. In addition, during the welding process, a brown acrylic plate is set on the protective fence, which can block the welding slag from splashing out and avoid damaging the workers' eyes.

[0018] In this invention, the feeding assembly is equipped with a conveyor belt for automatic feeding and a position sensor to automatically detect the position of the welding nut, enabling the robotic arm to accurately grasp the welding nut and further improve welding efficiency. In addition, this solution can also be applied to the mass production of welding other pipe parts, making it highly versatile and widely applicable.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the welding gripping assembly in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the aluminum profile component structure in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the positioning structure in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the feeding component in an embodiment of the present invention.

[0025] In the diagram: 1. Protective fence; 11. First fence; 12. Second fence; 13. Third fence; 2. Robotic arm; 3. Welding gripping assembly; 31. Rotary cylinder; 32. Mounting plate; 33. Welding torch; 34. Clamping cylinder; 35. Gripper; 4. Positioning structure; 41. Positioning bracket; 42. First column; 43. Crossbeam; 44. Electric sliding rod; 440. Slider; 45. Telescopic cylinder; 46. Pressing column; 4 7. Second upright; 48. First clamping assembly; 480. Insert rod; 481. Spring; 49. Second clamping assembly; 490. Threaded rod; 491. Top plate; 492. Locking nut; 493. Connector; 50. Support column; 5. Aluminum profile assembly; 51. Profile; 52. Welding nut; 6. Feeding assembly; 61. Feeding bracket; 62. Motor; 63. Conveyor belt; 64. Guardrail; 65. Position sensor. Detailed Implementation

[0026] like Figure 1-5 As shown: A metal welding fixture includes a protective fence 1. Inside the protective fence 1, there is a robotic arm 2, a positioning structure 4 and a feeding assembly 6. The power output end of the robotic arm 2 is fixedly installed with a welding gripping assembly 3. The positioning structure 4 and the feeding assembly 6 are arranged perpendicularly. The positioning structure 4 is located on one side close to the welding gripping assembly 3, and the feeding assembly 6 is located on the other side of the welding gripping assembly 3. An aluminum profile assembly 5 is detachably placed on the positioning structure 4.

[0027] In this embodiment, the protective fence 1 is placed directly on the ground for use.

[0028] The protective fence 1 includes a first fence 11, a second fence 12 is vertically arranged on one side of the first fence 11, and a third fence 13 is vertically arranged on the other side of the second fence 12. In this design, the third fence 13 is arranged parallel to the first fence 11.

[0029] The protective fence 1 serves to protect the welder during the welding process, preventing weld slag from spreading and protecting the surrounding environment.

[0030] The first fence 11 is made of square tubes of different lengths and fixed installation with brown acrylic sheets. The brown acrylic sheets can facilitate observation during the welding process and protect the eyes of workers from damage.

[0031] The feeding component 6 is located at the third fence 13.

[0032] The third fence 13 and the second fence 12 are both made of multiple square tubes of different lengths welded together. There are opening and closing doors between the square tubes, which are not shown in the figure. In this embodiment, the opening and closing doors are also made of brown acrylic sheets, which are convenient for workers to operate.

[0033] like Figure 2 As shown, the welding gripping assembly 3 includes a rotary cylinder 31 fixedly installed at the power output end of the robotic arm 2, and the rotary cylinder 31 is commercially available.

[0034] The rotating end of the rotary cylinder 31 is fixedly mounted with a mounting plate 32, and a welding torch 33 is fixedly mounted on one side of the mounting plate 32. The welding torch 33 can also be obtained commercially.

[0035] A clamping cylinder 34 is fixedly installed on the other side of the mounting plate 32, and a plurality of annular array grippers 35 are fixedly installed on the power output end of the clamping cylinder 34.

[0036] In this embodiment, the clamping cylinder 34 is commercially available, and the clamping cylinder 34 has three power output ends. The power output ends can move towards each other or away from each other under the control of the air source, and each of the three power output ends is fixedly equipped with a gripper 35.

[0037] The ends of the grippers 35 that are close to each other are all set as arc surfaces. The arc surfaces match the outer surface of the welding nut 52. With this design, when the grippers 35 move in the direction that they are close to each other, the arc surfaces of all the grippers 35 can clamp the welding nut 52, thus completing the gripping of the welding nut 52. This design is suitable for various types of welding nuts 52.

[0038] like Figure 4 As shown, the positioning structure 4 includes a positioning bracket 41 placed directly on the ground, and the positioning bracket 41 is located near the welding gripping component 3.

[0039] In this embodiment, the positioning bracket 41 is made of square tube and stainless steel plate welded together, and a first column 42 is vertically arranged on the upper surface of the positioning bracket 41 near one side.

[0040] A first clamping component 48 is provided at the middle position of the first column 42.

[0041] The second column 47 is vertically arranged on the upper surface of the positioning bracket 41 near the other side, and the second column 47 is symmetrically arranged with the first column 42.

[0042] A second clamping component 49 is provided at the position corresponding to the first clamping component 48 in the middle of the second column 47.

[0043] The aluminum profile assembly 5 can be detachably installed between the first clamping assembly 48 and the second clamping assembly 49.

[0044] Multiple support columns 50 are vertically arranged on the upper surface of the positioning bracket 41 between the first column 42 and the second column 47.

[0045] Multiple silicone pads (not shown in the figure) are movably placed on the upper surface of the multiple support columns 50. When the aluminum profile assembly 5 is placed between the first clamping assembly 48 and the second clamping assembly 49, the lower surface of the aluminum profile assembly 5 contacts the upper surface of the support column 50. That is, the support column 50 is used to support the aluminum profile assembly 5. The silicone pads can be used to match different models of aluminum profile assemblies 5 and protect the surface from being damaged.

[0046] The first clamping assembly 48 includes a plug rod 480 inserted into the middle position of the first column 42, the plug rod 480 passing through the first column 42.

[0047] A spring 481 is fixedly installed on the end face of the first column 42 away from the second column 47 and at a position corresponding to the insertion rod 480. The spring 481 is sleeved on the outer surface of the insertion rod 480 and the other end is fixedly installed on the end of the insertion rod 480 away from the first column 42.

[0048] The outer surface dimensions of the insertion rod 480 match the dimensions of the intermediate cavity of the profile 51. In use, the insertion rod 480 is pulled away from the first column 42, and one end of the profile 51 is placed at the position of the insertion rod 480. Then the insertion rod 480 is released, and under the action of the spring 481, one end of the insertion rod 480 can be inserted into the intermediate cavity of the profile 51.

[0049] The second clamping assembly 49 includes a threaded rod 490 threadedly connected to the second column 47, the threaded rod 490 passing through the second column 47 and corresponding to the position of the insertion rod 480.

[0050] A top plate 491 is fixedly installed on one end of the threaded rod 490 near the first column 42, and a plug connector 493 is vertically arranged on the end face of the top plate 491 near the first column 42.

[0051] The position of the connector 493 corresponds to that of the plug rod 480, and the outer surface dimensions of the connector 493 match the dimensions of the intermediate cavity of the profile 51.

[0052] The threaded rod 490 is threadedly connected to the first column 42 at the position of the threaded rod 490. The locking nut 492 is used to fix and lock the position of the threaded rod 490.

[0053] In use, one end of the profile 51 is inserted into the plug rod 480, and the other end of the profile 51 is inserted into the plug connector 493. Then, the threaded rod 490 is rotated to move the threaded rod 490 closer to the first column 42 until the profile 51 is pressed against it. Then, the locking nut 492 is tightened to fix the position of the threaded rod 490.

[0054] At the same time, adjust the number of silicone pads on the upper surface of the support column 50 to ensure that the lower surface of the profile 51 can be supported by the support column 50.

[0055] The same crossbeam 43 is fixedly installed on the upper surface of the first column 42 and the second column 47.

[0056] An electric slide bar 44 is fixedly installed on the end face of the crossbeam 43 near the support column 50, and a slider 440 is provided at the power output end of the electric slide bar 44.

[0057] A telescopic cylinder 45 is fixedly installed on the end face of the slider 440 near the support column 50. A pressing column 46 is fixedly installed on the power output end of the telescopic cylinder 45. A chamfer is provided at the other end of the pressing column 46. The chamfer size matches the middle size of the welding nut 52, so as to press the welding nut 52.

[0058] like Figure 5 As shown, the feeding assembly 6 includes a feeding bracket 61 placed on the ground, and a guardrail 64 is fixedly installed at the middle position above the feeding bracket 61.

[0059] In this embodiment, the guardrail 64 is made of multiple stainless steel plates welded together.

[0060] The guardrail 64 is equipped with a conveyor belt 63, which is also fixedly installed on the feeding bracket 61.

[0061] The conveying principle of the conveyor belt 63 is that the drive roller drives the conveyor belt 63 to move through friction. The specific structure is well known in the prior art and will not be described in detail here.

[0062] In this embodiment, the conveyor belt 63 moves toward the positioning structure 4.

[0063] One end of the conveyor belt 63 is connected to the power output end of the motor 62 via a drive roller. In this design, the motor 62 provides the power to drive the conveyor belt 63 to move.

[0064] The motor 62 is also fixedly mounted on the feeding bracket 61.

[0065] Multiple welding nuts 52 are placed on the conveyor belt 63, and the movement of the conveyor belt 63 causes the welding nuts 52 to move toward the positioning structure 4.

[0066] The guardrail 64 ensures that the welded nuts 52 are arranged linearly when they move on the conveyor belt 63.

[0067] Position sensors 65 for detecting welding nuts 52 are fixedly installed on both sides of the guardrail 64 near the positioning structure 4.

[0068] A control system for controlling the operation of the tooling is also installed on one side of the protective fence 1. It is not shown in the figure. The control principle of the control system is well known in the prior art and will not be described in detail here.

[0069] The drive system of the robotic arm 2 is electrically connected to the control system, and the control end of the welding torch 33 is electrically connected to the control system via wires.

[0070] The control end of the electric slide bar 44 is electrically connected to the control system.

[0071] The control terminals of the rotary cylinder 31, clamping cylinder 34, and telescopic cylinder 45 are electrically connected to the control system via wires.

[0072] The control terminal of the motor 62 is electrically connected to the control system, and the signal output terminal of the position sensor 65 is electrically connected to the control system.

[0073] In use, the position information of the corresponding welding nuts 52 that need to be welded on the profile 51 is input into the control system. The staff installs the profile 51 onto the positioning structure 4 and then places multiple welding nuts 52 onto the conveyor belt 63.

[0074] When the welding nut 52 on the conveyor belt 63 moves to the position sensor 65 under the conveyor belt 63, the position sensor 65 feeds back the signal to the control system, and the control system controls the motor 62 to stop running.

[0075] Then, the rotary cylinder 31 is activated, driving the mounting plate 32 to rotate, thereby causing the clamping cylinder 34 to rotate to a position close to the feeding assembly 6. At the same time, the gripper 35 of the clamping cylinder 34 is controlled to open, and the robotic arm 2 is activated. The power output end of the robotic arm 2 drives the gripper 35 to grab the welding nut 52 located at the position sensor 65 on the conveyor belt 63. When the position sensor 65 does not detect the welding nut 52, it feeds back the signal to the control system. The control system controls the start motor 62, thereby causing the conveyor belt 63 to continue to transport the welding nut 52, ensuring that there is always a welding nut 52 at the position sensor 65.

[0076] The gripper 35 grasps the welding nut 52 and places it on the profile 51 according to preset information. When welding, the electric slide bar 44 is activated, driving the slider 440 to move the telescopic cylinder 45 and the clamping column 46 above the welding nut 52. The telescopic cylinder 45 is activated, driving the clamping column 46 to press down and tighten the welding nut 52. Then the robotic arm 2 is activated to drive the welding gun 33 to complete the welding. During this process, to facilitate welding, the rotary cylinder 31 can be activated to adjust the position of the welding gun 33. This process is repeated.

[0077] When a profile 51 is welded, the workers remove the aluminum profile assembly 5 from the positioning structure 4 and then reinstall the profile 51 for welding, which can reduce the labor intensity of the workers.

[0078] In addition to this embodiment, the tooling can also be used for the batch welding of other tubular parts, making it highly versatile and efficient.

[0079] For those skilled in the art, any changes, modifications, substitutions, and variations made to the embodiments based on the teachings of this utility model, without departing from the principles and spirit of this utility model, still fall within the protection scope of this utility model.

Claims

1. A tooling for metal welding, comprising a protective fence (1), characterized in that: The protective fence (1) is equipped with a robotic arm (2), a positioning structure (4) and a feeding assembly (6). The power output end of the robotic arm (2) is fixedly installed with a welding gripping assembly (3). The positioning structure (4) and the feeding assembly (6) are arranged vertically. The positioning structure (4) is located on one side close to the welding gripping assembly (3), and the feeding assembly (6) is located on the other side of the welding gripping assembly (3). An aluminum profile assembly (5) can be detachably placed on the positioning structure (4).

2. The tooling for metal welding according to claim 1, characterized in that: The welding gripping assembly (3) includes a rotary cylinder (31) fixedly installed at the power output end of the robotic arm (2). A mounting plate (32) is fixedly installed at the rotating end of the rotary cylinder (31). A welding torch (33) is fixedly installed on one side of the mounting plate (32). A clamping cylinder (34) is fixedly installed on the other side of the mounting plate (32). A plurality of grippers (35) in a ring array are fixedly installed at the power output end of the clamping cylinder (34).

3. The tooling for metal welding according to claim 2, characterized in that: The positioning structure (4) includes a positioning bracket (41) placed directly on the ground, located near the welding gripping assembly (3).

4. The tooling for metal welding according to claim 3, characterized in that: The positioning bracket (41) has a first column (42) vertically arranged on one side of its upper surface, and a second column (47) vertically arranged on the other side of its upper surface. The second column (47) and the first column (42) are arranged symmetrically.

5. The tooling for metal welding according to claim 4, characterized in that: A first clamping component (48) is provided at the middle position of the first column (42), and a second clamping component (49) is provided at the middle position of the second column (47) corresponding to the first clamping component (48).

6. The tooling for metal welding according to claim 5, characterized in that: The aluminum profile assembly (5) is detachably installed between the first clamping assembly (48) and the second clamping assembly (49).

7. The tooling for metal welding according to claim 6, characterized in that: Multiple support columns (50) are vertically arranged on the upper surface of the positioning bracket (41) between the first column (42) and the second column (47).

8. The tooling for metal welding according to claim 7, characterized in that: The first column (42) and the second column (47) are fixedly installed with the same crossbeam (43). An electric slide rod (44) is fixedly installed on the end face of the crossbeam (43) near the support column (50). A telescopic cylinder (45) is slidably connected to the power output end of the electric slide rod (44). A pressing column (46) is fixedly installed on the power output end of the telescopic cylinder (45).

9. A metal welding fixture according to claim 8, characterized in that: The feeding assembly (6) includes a feeding bracket (61) placed on the ground. A guardrail (64) is fixedly installed at the middle position above the feeding bracket (61). A conveyor belt (63) is provided inside the guardrail (64). The conveyor belt (63) is also fixedly installed on the feeding bracket (61). One end of the conveyor belt (63) is connected to a motor (62). The motor (62) is also fixedly installed on the feeding bracket (61).

10. A tooling for metal welding according to claim 9, characterized in that: Position sensors (65) are fixedly installed on both sides of the guardrail (64) near the positioning structure (4).

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