Small welding device

Abstract

The utility model relates to the technical field of welding devices, and discloses a small welding device which comprises a workbench, a first motor is fixedly connected to the center of the bottom of the workbench, a gear is fixedly connected to the output end of the first motor, racks are connected to the two ends of the gear in a meshed mode respectively, and through grooves are formed in the positions, located on the racks, of the workbench. A connecting rod is fixedly connected to one end of the top of each rack and slidably connected with the corresponding through groove, supporting plates are fixedly connected to the tops of the connecting rods, four springs are fixedly connected to the adjacent ends of the two supporting plates, and dampers are fixedly connected to the portions, located in the springs, of the supporting plates. According to the circuit board welding fixture, circuit boards of different sizes can be clamped during welding through the ingenious design, so that the circuit boards are prevented from shaking during welding, and then the welding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding devices, in particular to a small welding device. Background Art

[0002] Welding is a manufacturing process and technology that joins metals or other thermoplastic materials by heating, high temperature or high pressure. At present, manual welding is usually used for welding circuit boards. During welding, the operator fixes the circuit board with his left hand, and then uses a soldering iron in his right hand to solder the wires to the circuit board in turn. However, it is difficult to ensure the stability of welding in this way. When the operator manually fixes the circuit board, there will be slight shaking, which will cause the welding wire to be unable to be completely fixed, thus affecting the quality of welding.

[0003] For example, a circuit board welding device disclosed in a Chinese utility model patent with a publication number of CN215469061U and an authorization announcement date of January 11, 2022 relates to the field of welding technology; the circuit board welding device is used to weld the circuit board, and the circuit board welding device includes a welding head, and the circuit board welding device includes: a base, a support plate, a connecting plate, a slide groove, a threaded rod, a first motor, a first gear, a second gear, a slider and an electric push rod; the circuit board is placed on the base; the two support plates are respectively fixed on both sides of the top surface of the base; the two ends of the connecting plate are respectively connected to the two support plates; the slide groove is arranged on the connecting plate; the outer wall of the threaded rod is provided with a first external thread, the threaded rod passes through both sides of the connecting plate in turn, the threaded rod is rotatably connected to the connecting plate, and at least part of the threaded rod is embedded in the slide groove; the first motor includes a first output shaft, and the first motor is fixed on one side of the support plate; the first gear is sleeved on the outside of the first output shaft, and the first gear and the first output shaft have no relative rotation.

[0004] However, in actual use, the above device fixes the circuit board by setting a stepped fixing groove on the working platform to prevent the circuit board from shaking during welding. However, such a setting requires that the size of the circuit board be adapted to the fixing groove. When the size of the circuit board is slightly smaller, it will cause shaking during the welding process, thereby affecting the welding quality. When the size of the circuit board is slightly larger, it cannot be placed in the fixing groove, so it cannot be fixed, thereby affecting subsequent welding. Utility Model Content

[0005] The utility model aims to provide a small welding device to solve the problem that the existing circuit board is easy to shake during welding.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small welding device, comprising a workbench, a first motor is fixedly connected to the bottom center of the workbench, a gear is fixedly connected to the output end of the first motor, racks are respectively meshed and connected at both ends of the gear, a through groove is provided at the rack of the workbench, a connecting rod is fixedly connected to the top end of the rack, the connecting rod is slidably connected to the through groove, a support plate is fixedly connected to the top of the connecting rod, four springs are fixedly connected to the adjacent ends of two support plates, a damper is fixedly connected to the support plate inside the spring, and a clamp is commonly fixedly connected to the end of the spring and the damper away from the support plate.

[0007] Preferably, the top of the workbench is provided with first slide grooves at both ends of the support plate, and both ends of the bottom of the support plate are fixedly connected with first sliders, and the first slide grooves are slidably connected to the first sliders.

[0008] Preferably, a base is fixedly connected to the bottom of the workbench, a second slide groove is provided at one end of the base, a second slider is slidably connected in the second slide groove, a support rod is fixedly connected to the top of the second slider, and a welding head is provided at one end of the top of the support rod.

[0009] Preferably, the base is fixedly connected to a second motor at one end of the second slide slot, a threaded rod is fixedly connected to an output end of the second motor, and the threaded rod is threadedly connected to the second slider.

[0010] Preferably, the threaded rod is rotatably connected to the base.

[0011] Preferably, the top of the support rod is fixedly connected to a first cylinder, the output end of the first cylinder is fixedly connected to a second cylinder, and the welding head is installed at the output end of the second cylinder.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model clamps the circuit board by arranging clamping plates at both ends of the workbench, so that circuit boards of different sizes can be fixed smoothly. Through the design of the first motor, the gear and the rack, the two racks will move synchronously when the motor drives the gear to rotate, thereby driving the two clamping plates to move synchronously, so that the clamped position of the circuit board will always be in the middle position of the top of the workbench, which is convenient for subsequent welding. The design of the spring and the damper can give the clamping plate a buffering effect when it contacts the circuit board, thereby preventing the clamping plate from moving too fast and clamping the circuit board. The utility model allows circuit boards of different sizes to be clamped during welding through clever design, thereby avoiding the shaking of the circuit board during welding, thereby ensuring the quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0016] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0017] Figure 4 for Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0018] Figure 5 for Figure 2 A schematic diagram of the partially enlarged structure at C in the middle;

[0019] Figure 6 It is a schematic diagram of the bottom structure of the workbench in the utility model.

[0020] In the figure: 1. workbench; 2. first motor; 3. gear; 4. rack; 5. through groove; 6. connecting rod; 7. support plate; 8. spring; 9. damper; 10. clamping plate; 11. first slide groove; 12. first slider; 13. base; 14. second slide groove; 15. second slider; 16. support rod; 17. welding head; 18. second motor; 19. threaded rod; 20. first cylinder; 21. second cylinder. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-6 The utility model provides a technical solution: a small welding device, including a workbench 1, a first motor 2 is fixedly connected to the bottom center of the workbench 1, a gear 3 is fixedly connected to the output end of the first motor 2, and racks 4 are respectively meshed and connected at both ends of the gear 3. A through groove 5 is provided at the workbench 1 at the rack 4, a connecting rod 6 is fixedly connected to the top end of the rack 4, and the connecting rod 6 is slidably connected to the through groove 5. A support plate 7 is fixedly connected to the top of the connecting rod 6, and four springs 8 are fixedly connected to the adjacent ends of the two support plates 7. The support plate 7 is located in the spring 8 and is fixedly connected to a damper 9. The spring 8 and the damper 9 are fixedly connected to a clamping plate 10 at one end away from the support plate 7.

[0023] In this embodiment, the circuit board needs to be fixed before welding. First, the circuit board is placed on the workbench 1, and then the first motor 2 is turned on. Driven by the first motor 2, the gear 3 will rotate, thereby driving the two racks 4 to move. In the process of the movement of the rack 4, the support plate 7 will be driven to move. At this time, the two support plates 7 will be close to each other, thereby driving the two clamps 10 to be close to each other, so that the circuit board can be clamped. When the clamp 10 just contacts the circuit board, the spring 8 and the damper 9 will shrink rapidly to play a buffering role, thereby preventing the clamp 10 from moving too fast and damaging the circuit board. When the spring 8 and the damper 9 are fully contracted, the circuit board is completely fixed, and the circuit board can be welded at this time.

[0024] The top of the workbench 1 is provided with first slide grooves 11 at both ends of the support plate 7, and the two ends of the bottom of the support plate 7 are respectively fixedly connected with first sliders 12. The first slide groove 11 is slidably connected to the first slider 12. In this embodiment, the design of the first slide groove 11 and the first slider 12 allows the workbench 1 to be slidably connected to the support plate 7, so that the support plate 7 will be more stable when moving, and then the movement of the clamping plate 10 will be more stable, thereby achieving a better clamping effect.

[0025] A base 13 is fixedly connected to the bottom of the workbench 1, a second slide groove 14 is provided at one end of the base 13, a second slider 15 is slidably connected in the second slide groove 14, a support rod 16 is fixedly connected to the top of the second slider 15, and a welding head 17 is provided at one end of the top of the support rod 16. In this embodiment, the circuit board is welded by the design of the welding head 17, and the design of the second slide groove 14 and the second slider 15 allows the welding head 17 to move left and right, thereby facilitating the welding of the left and right ends of the circuit board.

[0026] The base 13 is located at one end of the second slide groove 14 and is fixedly connected to a second motor 18. A threaded rod 19 is fixedly connected to the output end of the second motor 18. The threaded rod 19 is threadedly connected to the second slider 15. In this embodiment, the threaded rod 19 is driven to rotate by the motor, thereby driving the second slider 15 to move, wherein the second slider 15 and the second slide groove 14 are slidably connected together. Therefore, when the threaded rod 19 rotates, the second slider 15 can only move left and right, thereby driving the welding head 17 to move left and right.

[0027] The threaded rod 19 is rotatably connected to the base 13. In the present embodiment, only when the threaded rod 19 is rotatably connected to the base 13 can the second motor 18 smoothly drive the threaded rod 19 to rotate.

[0028] A first cylinder 20 is fixedly connected to the top of the support rod 16, and a second cylinder 21 is fixedly connected to the output end of the first cylinder 20. The welding head 17 is installed at the output end of the second cylinder 21. In this embodiment, the first cylinder 20 is perpendicular to the support rod 16, and the output end is located at one end of the workbench 1, and the second cylinder 21 is perpendicular to the first cylinder 20, and the output end is located at one end of the workbench 1. In this way, the first cylinder 20 can drive the welding head 17 to move forward and backward, and the second cylinder 21 can drive the welding head 17 to move up and down. In this way, under the mutual cooperation of the second motor 18, the first cylinder 20 and the second cylinder 21, the welding head 17 can be moved to various positions of the workbench 1, so as to facilitate the welding of the circuit board.

[0029] Working principle: When in use, first put the circuit board on the workbench 1, then turn on the first motor 2, and the gear 3 will rotate under the drive of the first motor 2, thereby driving the two racks 4 to move, and in the process of the rack 4 moving, it will drive the support plate 7 to move, and then the two support plates 7 will be close to each other, thereby driving the two clamping plates 10 to be close to each other, so that the circuit board can be clamped, and when the clamping plate 10 just contacts the circuit board, the spring 8 and the damper 9 will shrink rapidly to play a buffering role, thereby preventing the clamping plate 10 from moving too fast and damaging the circuit board. When the spring 8 and the damper 9 are fully contracted, the circuit board is completely fixed, and then the welding head 17 can be opened to weld the circuit board. During welding, the welding head 17 needs to move position, and at this time, by opening The second motor 18 can drive the threaded rod 19 to rotate. Since the second slider 15 and the threaded rod 19 are threadedly connected together, and the second slider 15 and the second slide groove 14 are slidably connected together, when the threaded rod 19 rotates, the second slider 15 will not rotate with the rotation of the threaded rod 19, but can only move left and right, thereby driving the welding head 17 to move left and right. Then, the first cylinder 20 is turned on, and the welding head 17 will move back and forth under the drive of the first cylinder 20. Then, the second cylinder 21 is turned on, and the welding head 17 will move up and down under the drive of the second cylinder 21. In this way, under the mutual cooperation of the second motor 18, the first cylinder 20 and the second cylinder 21, the welding head 17 can be moved to various positions of the workbench 1, thereby facilitating the welding of the circuit board.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes and modifications may be made to the embodiments without departing from the principles of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small welding device, comprising a workbench (1), characterized in that: A first motor (2) is fixedly connected to the center of the bottom of the workbench (1); a gear (3) is fixedly connected to the output end of the first motor (2); two ends of the gear (3) are respectively meshed with racks (4); a through slot (5) is provided at the rack (4) of the workbench (1); a connecting rod (6) is fixedly connected to the top end of the rack (4); the connecting rod (6) is slidably connected to the through slot (5); a support plate (7) is fixedly connected to the top of the connecting rod (6); four springs (8) are fixedly connected to the adjacent ends of the two support plates (7); a damper (9) is fixedly connected to the support plate (7) located inside the spring (8); and a clamping plate (10) is fixedly connected to the end of the spring (8) and the damper (9) away from the support plate (7).

2. A small welding device according to claim 1, characterized in that: The top of the workbench (1) is provided with first sliding grooves (11) at both ends of the support plate (7), and the bottom of the support plate (7) is fixedly connected with first sliding blocks (12) at both ends, and the first sliding grooves (11) are slidably connected to the first sliding blocks (12).

3. A small welding device according to claim 2, characterized in that: The bottom of the workbench (1) is fixedly connected to a base (13), one end of the base (13) is provided with a second slide groove (14), a second slider (15) is slidably connected in the second slide groove (14), the top of the second slider (15) is fixedly connected to a support rod (16), and one end of the top of the support rod (16) is provided with a welding head (17).

4. A small welding device according to claim 3, characterized in that: The base (13) is fixedly connected to a second motor (18) at one end of the second slide groove (14); a threaded rod (19) is fixedly connected to the output end of the second motor (18); and the threaded rod (19) is threadedly connected to the second slider (15).

5. A small welding device according to claim 4, characterized in that: The threaded rod (19) is rotatably connected to the base (13).

6. A small welding device according to claim 3, characterized in that: The top of the support rod (16) is fixedly connected to a first cylinder (20), the output end of the first cylinder (20) is fixedly connected to a second cylinder (21), and the welding head (17) is installed at the output end of the second cylinder (21).

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