Sheet metal part welding fixing device

Abstract

The invention discloses a sheet metal part welding fixing device, and relates to the technical field of welding equipment, the sheet metal part welding fixing device comprises two first push rods mounted at one end of a push block, one end of each first push rod is fixedly connected with a first mounting plate, and one side of the top end of each first mounting plate is rotatably connected with two rotating arms; the end, away from the first mounting plate, of each rotating arm is rotationally connected with a sliding plate, the top ends of the two sliding plates are both in sliding connection with the inner top wall of the first mounting shell, the sides, away from each other, of the two sliding plates are both fixedly connected with first fixing plates, and the inner walls of the two sides of each first fixing plate are both fixedly connected with second push rods; according to the invention, the fixing assembly can be adjusted according to the shape of the sheet metal part, so that the fixing assembly can be tightly attached to the surface of the sheet metal part, stable centering and fixing are realized, the fixing precision and reliability are improved, and the application range of the fixing assembly is widened.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a sheet metal welding and fixing device. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates, including shearing, punching / cutting / compounding, folding, welding, riveting, splicing, forming, etc. The most obvious feature is that the thickness of the same part is consistent. The products processed by sheet metal technology are called sheet metal parts. The sheet metal parts referred to in different industries are generally different, and are mostly used for assembly. Sheet metal parts have the characteristics of light weight, high strength, conductivity, low cost, and good performance in large-scale mass production. They have been widely used in electronics, communications, automotive industry, medical equipment and other fields. For example, sheet metal parts are an indispensable component in computer cases, mobile phones, and MP3s.

[0003] Sheet metal welding is one of the most important processing techniques after sheet metal processing. It connects two or more sheet metal materials together through heating, pressure or electric arc. This connection method has the advantages of high strength, low cost and strong adaptability. Therefore, it is widely used in automobiles, aerospace, electronic equipment and other fields. For example, in automobile manufacturing, welding technology is used to connect the body, chassis and components to form a whole, thereby improving the structural strength of the car. In the aerospace field, welding technology can meet the high requirements for material weight and performance and achieve lightweight design.

[0004] In the prior art, some start-ups or small companies can only achieve uniform preliminary fixing and clamping when performing welding processing on sheet metal parts. Different sheet metal parts have different shapes, and traditional fixing components may not be able to fit tightly to the surface of the sheet metal parts, causing the sheet metal parts to shake or shift easily during the welding process. This may be because during welding, the workpiece will be locally affected by high temperature heat, causing thermal expansion and deformation, and in the subsequent cooling process, the workpiece will shrink and deform due to the release of thermal stress, causing vibration of the workpiece. Summary of the invention

[0005] The purpose of the present invention is to provide a sheet metal welding and fixing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the sheet metal welding fixing device provided by the present invention comprises a first mounting shell and a second mounting shell, the top end of the second mounting shell is slidably connected to a push block, and one end of the push block is connected to a fixing component; The fixing assembly includes a clamping sub-mechanism and a vibration reduction sub-mechanism; The clamping sub-mechanism includes two first push rods installed at one end of the pushing block, one end of the two first push rods are fixedly connected to the first mounting plate, one side of the top end of the first mounting plate is rotatably connected to two rotating arms, one end of each rotating arm away from the first mounting plate is rotatably connected to a sliding plate, the tops of the two sliding plates are slidably connected to the inner top wall of the first mounting shell, the sides away from the two sliding plates are fixedly connected to the first fixed plate, the inner walls of both sides of each first fixed plate are fixedly connected to the second push rod, the ends of the two second push rods away from the first fixed plate are rotatably connected to the support plate, the sides close to the two support plates are rotatably connected to the rotating rod, and the inner wall of each support plate is slidably connected to a pressure plate.

[0007] Furthermore, a damping sub-mechanism is installed inside each support plate, and the damping sub-mechanism includes four first mounting blocks installed at the bottom end of the pressure plate, the four first mounting blocks are rectangular, each first mounting block is rotatably connected to a first roller at the bottom end away from the pressure plate, the first roller is abuttedly connected to a second mounting block at a side away from the first mounting block, the bottom end of the second mounting block is rotatably connected to a second roller, a damping rod is fixedly connected to an outer wall of a side of the second mounting block away from the first roller, a first spring is sleeved on an outer wall of the damping rod, the bottom end of the pressure plate is rotatably connected to a telescopic rod, and one end of the telescopic rod away from the pressure plate is slidably connected to the inner wall of the support plate.

[0008] Furthermore, a positioning assembly is installed inside the pushing block, and the positioning assembly includes a second mounting plate installed inside the pushing block, a third push rod is connected to an outer wall of one side of the second mounting plate, a second spring is sleeved on the outer wall of an end of the third push rod away from the second mounting plate, a clamping block is fixedly connected to the same end of the third push rod, a guide rail is provided on the inner wall of the second mounting plate, a slider is slidably connected to the inner wall of the guide rail, a pressure rod is fixedly connected to the end of the slider away from the guide rail, a second fixed plate is installed on the inner wall of the second mounting shell, and a plurality of grooves are evenly arranged on the inner wall of the second fixed plate.

[0009] Furthermore, one end of each rotating arm is rotatably connected to the top end of the first mounting plate via a first rotating shaft, and one end of each rotating arm away from the first mounting plate is rotatably connected to the bottom end of each sliding plate via a second rotating shaft.

[0010] Furthermore, an outer wall on one side of each first mounting block is fixedly connected to the outer wall on the bottom end of the pressure plate, one side of each second roller is rotatably connected to the inner bottom wall of the support plate, one end of the damping rod is fixedly connected to one side of the second mounting block, one end of the damping rod away from the second mounting block is fixedly connected to the inner wall of the support plate, one end of the first spring is fixedly connected to one end of the second mounting block, and the other end of the first spring is fixedly connected to the inner wall of the support plate.

[0011] Furthermore, the material of the pressing plate is a high temperature resistant material, and the surface of the pressing plate is evenly paved with anti-slip textures.

[0012] Furthermore, the outer wall of the third push rod is slidably connected to the inner wall of the push block, one end of the second spring is fixedly connected to the clamping block, and the other end of the second spring is fixedly connected to the inner wall of the push block.

[0013] Furthermore, the diameter of each groove is matched with the diameter of the clamping block, and the bottom end of the pushing block is slidably connected to the inner wall of the second mounting shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The fixing components can be adjusted according to the shape of the sheet metal parts to ensure that the fixing components can fit closely to the surface of the sheet metal parts, achieve stable centering fixation, improve the accuracy and reliability of fixation, and broaden the application scope of the fixing components. At the same time, the fixing components can reduce deformation and vibration during welding, because the sheet metal parts will produce thermal stress due to local heating, resulting in deformation and vibration. The support plate can be rotated and bent to adapt to the shape changes of the sheet metal parts during welding, thereby effectively reducing deformation and vibration during welding and improving the welding quality and accuracy of sheet metal parts.

[0015] 2. The vibration reduction component can improve the stability of the support plate when fixing the sheet metal. Because during the welding process, due to the high temperature of the arc or flame, the sheet metal and the support plate may be affected by thermal stress and undergo slight deformation. The vibration reduction component can effectively absorb and disperse the energy caused by these deformations through its elastic characteristics, thereby maintaining a close fit between the support plate and the sheet metal, and avoiding shaking or displacement of the workpiece during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the sheet metal welding fixture; Figure 2 It is a schematic diagram of the structure of the fixing components in the sheet metal welding fixture; Figure 3 A bottom view of a clamping sub-mechanism in a sheet metal welding fixture; Figure 4 It is a structural schematic diagram of the vibration reduction mechanism in the sheet metal welding fixture; Figure 5 It is a structural schematic diagram of a positioning device in a sheet metal welding fixture; Figure 6 It is a schematic diagram of the structure of the second fixing plate in the sheet metal welding fixing device.

[0017] In the figure: 1. First mounting shell; 2. Push block; 3. First push rod; 4. First mounting plate; 5. Rotating arm; 6. Sliding plate; 7. First fixed plate; 8. Second push rod; 9. Support plate; 10. Pressing plate; 11. First mounting block; 12. First roller; 13. Second mounting block; 14. Second roller; 15. Damping rod; 16. First spring; 17. Second mounting plate; 18. Third push rod; 19. Second spring; 20. Block; 21. Guide rail; 22. Sliding block; 23. Pressing rod; 24. Second fixed plate; 25. Groove; 26. Second mounting shell; 27. Rotating rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 - Figure 6 , the present invention provides a technical solution for a sheet metal welding fixture: In an embodiment of the present invention, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , including a first mounting shell 1 and a second mounting shell 26, a top end of the second mounting shell 26 is slidably connected to a push block 2, and one end of the push block 2 is connected to a fixed component; The fixing assembly includes a clamping sub-mechanism and a vibration reduction sub-mechanism; The clamping sub-mechanism includes two first push rods 3 installed at one end of the pushing block 2, one end of the two first push rods 3 are fixedly connected to the first mounting plate 4, one side of the top end of the first mounting plate 4 is rotatably connected to two rotating arms 5, each rotating arm 5 is rotatably connected to the sliding plate 6 at one end away from the first mounting plate 4, the top ends of the two sliding plates 6 are slidably connected to the inner top wall of the first mounting shell 1, the two sliding plates 6 are fixedly connected to the first fixed plate 7 on the side away from each other, and the inner walls of both sides of each first fixed plate 7 are fixedly connected to the second push rods 8, the two second push rods 8 are rotatably connected to the support plate 9 at one end away from the first fixed plate 7, the two support plates 9 are rotatably connected to the rotating rod 27 on the side close to each other, and the inner wall of each support plate 9 is slidably connected to the pressure plate 10.

[0020] It should be noted that the pushing block 2 is movably connected to the top of the second mounting shell 26, so that when it is necessary to adjust the clamping position or fix sheet metal parts of different sizes, the operator can manually adjust the pushing block 2 to slide along the top of the second mounting shell 26 until it reaches the required position and is fixed. Manual operation does not require an additional power source, which reduces the equipment cost and can save the starting cost for start-up companies and small enterprises. The first push rod 3 is installed at one end of the pushing block 2. The first push rod 3 drives the first mounting plate 4 to move through the push of the pushing block 2. Through the movement of the first mounting plate 4, the connection point between one end of the rotating arm 5 and the first mounting plate 4 rotates with the first rotating shaft as the fulcrum, and the second rotating shaft is driven to rotate by the rotation of the rotating arm 5. The two sliding plates 6 slide relative to each other on the inner top wall of the first mounting shell 1, and the two first fixed plates 7 are driven to approach the sheet metal parts by the two sliding plates 6 respectively, and the second push rod 8 serves as a supporting structure to drive the support plate 9 and the pressure plate 10 to clamp the sheet metal parts.

[0021] See also Figure 4 A damping sub-mechanism is installed inside each supporting plate 9, and the damping sub-mechanism includes four first mounting blocks 11 mounted on the bottom end of the pressure plate 10, and the four first mounting blocks 11 are rectangular. Each first mounting block 11 is rotatably connected to a first roller 12 at the bottom end away from the pressure plate 10, and the first roller 12 is abutted against and connected to a second mounting block 13 on the side away from the first mounting block 11, and the bottom end of the second mounting block 13 is rotatably connected to a second roller 14, and a damping rod 15 is fixedly connected to the outer wall of the side of the second mounting block 13 away from the first roller 12, and a first spring 16 is sleeved on the outer wall of the damping rod 15, and a telescopic rod is rotatably connected to the bottom end of the pressure plate 10, and one end of the telescopic rod away from the pressure plate 10 is slidably connected to the inner wall of the supporting plate 9.

[0022] It should be noted that: the four first mounting blocks 11 are fixed to one side of the bottom end of the pressure plate 10, and the four first mounting blocks 11 are distributed in a rectangular shape. The rectangular distribution means that the four first mounting blocks 11 are respectively located at the four corners or near the corners of the bottom end of the pressure plate 10. Such a layout can ensure that the pressure plate 10 can be evenly supported in all directions when subjected to force. The bottom end of each first mounting block 11 is rotatably connected to the first roller 12. The rotatable connection between the first mounting block 11 and the first roller 12 allows the pressure plate 10 to move smoothly when subjected to pressure, reducing friction and wear. The second mounting block 13 is connected to the side of the first roller 12 away from the first mounting block 11. Rolling contact is formed, and the second roller 14 is rotatably connected to the bottom end of the second mounting block 13. When the first roller 12 squeezes one side of the second mounting block 13, the second mounting block 13 is allowed to slide on the inner wall of the support plate 9. The damping rod 15 is fixedly connected to the outer wall of the second mounting block 13 away from the first roller 12, and the other end is fixedly connected to the inner wall of the support plate 9. The first spring 16 is sleeved on the outer wall of the damping rod 15. When the pressure plate 10 is subjected to external pressure, the first spring 16 can undergo elastic deformation, thereby absorbing part of the vibration energy, and the damping rod 15 increases the damping effect in the vibration reduction process, so that the vibration of the first spring 16 decays faster, thereby improving the vibration reduction effect.

[0023] See also Figure 5 , Figure 6 A positioning assembly is installed inside the pushing block 2, and the positioning assembly includes a second mounting plate 17 installed inside the pushing block 2, a third push rod 18 is connected to an outer wall of one side of the second mounting plate 17, a second spring 19 is sleeved on the outer wall of one end of the third push rod 18 away from the second mounting plate 17, a clamping block 20 is fixedly connected to the same end of the third push rod 18, a guide rail 21 is provided on the inner wall of the second mounting plate 17, a slider 22 is slidably connected to the inner wall of the guide rail 21, a pressure rod 23 is fixedly connected to the end of the slider 22 away from the guide rail 21, a second fixing plate 24 is installed on the inner wall of the second mounting shell 26, and a plurality of grooves 25 are evenly provided on the inner wall of the second fixing plate 24.

[0024] It should be noted that: the staff manually pushes the pressure rod 23 to make the slider 22 slide in the guide rail 21, and the second mounting plate 17 drives the third push rod 18 to move the block 20 according to the push of the pressure rod 23, until the block 20 is aligned with and stuck in a groove 25 on the inner wall of the second fixed plate 24. At this time, the second spring 19 is in a relaxed state and can continue to push the block 20 to be stuck in the groove 25 to ensure the stability of the component. When it is necessary to release the positioning or adjust the position of the component, the pressure rod 23 is manually operated again to drive the block 20 to exit the groove 25.

[0025] See also Figure 4The outer wall of one side of each first mounting block 11 is fixedly connected to the outer wall of the bottom end of the pressure plate 10, one side of each second roller 14 is rotatably connected to the inner bottom wall of the support plate 9, one end of the damping rod 15 is fixedly connected to one side of the second mounting block 13, the end of the damping rod 15 away from the second mounting block 13 is fixedly connected to the inner wall of the support plate 9, one end of the first spring 16 is fixedly connected to one end of the second mounting block 13, and the other end of the first spring 16 is fixedly connected to the inner wall of the support plate 9.

[0026] It should be noted that one side of each first mounting block 11 is connected to the outer wall of the bottom end of the pressure plate 10, which ensures the stability of the component and ensures that the pressure plate 10 can evenly distribute pressure when subjected to force to avoid local overload. One end of the damping rod 15 is fixed to the outer wall of one side of the second mounting block 13, and the other end is fixedly connected to the inner wall of the support plate 9, providing additional support and stability for the component.

[0027] See also Figure 2 The material of the pressing plate 10 is a high temperature resistant material, and the surface of the pressing plate 10 is evenly paved with anti-slip textures.

[0028] It should be noted that the anti-slip texture increases the friction force on the surface of the pressing plate 10 to prevent the sheet metal from sliding or falling off during the clamping process.

[0029] Working principle: The staff first presses the pressure rod 23 to allow the push block 2 to move, because the pressure rod 23 is slidably connected to the guide rail 21 through the slider 22, and as the pressure rod 23 is pressed, the third push rod 18 connected to the slider 22 begins to move, because one end of the third push rod 18 is fixedly connected to the block 20, so the block 20 will also move synchronously, and at the same time, the second spring 19 sleeved on the outer wall of the third push rod 18 begins to be compressed, providing elastic force for the subsequent reset operation, when the block 20 moves to a position that matches the groove 25 on the inner wall of the second fixed plate 24, the pressure rod 23 is released, and according to the elastic force of the second spring 19, the block 20 will be firmly stuck in the groove 25, thereby locking the position of the push block 2; By pushing the push block 2 to slide along the second mounting shell 26, as the push block 2 moves, the two first push rods 3 begin to move forward and extend at the same time. The extension of the first push rods 3 pushes the first mounting plate 4 forward, thereby driving the rotating arm 5 to rotate. One end of the rotating arm 5 is rotatably connected to the top of the first mounting plate 4 through the first rotating shaft, and the other end is rotatably connected to the bottom of the sliding plate 6 through the second rotating shaft, so that the sliding plate 6 can slide along the inner top wall of the first mounting shell 1 and unfold to both sides. As the sliding plate 6 moves, the sliding plate 6 drives the first fixed plate 7 to approach the sheet metal part, and the second push rod 8 on the first fixed plate 7 pushes the support plate 9 to apply pressure to the sheet metal part. The movement of the support plate 9 allows the pressure plate 10 to slide along the inner wall of the support plate 9 and finally contact the sheet metal part. The pressure plate 10 will apply a certain clamping force to the sheet metal part, thereby ensuring that the sheet metal part will not move during the welding process, thereby avoiding the unstable welding caused by movement. When the pressure plate 10 applies pressure to the sheet metal part, the first mounting block 11 The first roller 12 is in contact with the second mounting block 13, and the second mounting block 13 is rotatably connected to the inner bottom wall of the support plate 9 through the second roller 14. During the welding and clamping process, the sheet metal often produces thermal stress and deformation due to local heating and subsequent cooling. When the pressure plate 10 is subjected to vibration and slight deformation caused by such external factors, the first roller 12 will squeeze the second mounting block 13 on the surface of the second mounting block 13, so that the second roller 14 rotates on the inner bottom wall of the support plate 9 to drive the second mounting block 13 to move. When the second mounting block 13 moves, the compression or tension damping rod 15 and the first spring 16 are used to absorb and disperse the vibration and impact force generated in the clamping process, reduce unstable factors in the processing process, and ensure welding quality.

Claims

1. A sheet metal welding fixture, comprising a first mounting housing (1) and a second mounting housing (26), characterized in that: A push block (2) is slidably connected to the top end of the second mounting shell (26), and one end of the push block (2) is connected to a fixing component; The fixing assembly includes a clamping sub-mechanism and a vibration reduction sub-mechanism; The clamping sub-mechanism comprises two first push rods (3) mounted on one end of the pushing block (2), one end of the two first push rods (3) are fixedly connected to the first mounting plate (4), one side of the top end of the first mounting plate (4) is rotatably connected to two rotating arms (5), one end of each rotating arm (5) away from the first mounting plate (4) is rotatably connected to a sliding plate (6), the top ends of the two sliding plates (6) are slidably connected to the inner top wall of the first mounting shell (1), the sides away from the two sliding plates (6) are fixedly connected to the first fixing plate (7), the inner walls of both sides of each first fixing plate (7) are fixedly connected to second push rods (8), the ends of the two second push rods (8) away from the first fixing plate (7) are rotatably connected to a supporting plate (9), the sides of the two supporting plates (9) close to each other are rotatably connected to a rotating rod (27), and the inner wall of each supporting plate (9) is slidably connected to a pressing plate (10).

2. The sheet metal welding and fixing device according to claim 1, characterized in that: A vibration damping sub-mechanism is installed inside each of the support plates (9), and the vibration damping sub-mechanism comprises four first mounting blocks (11) mounted at the bottom end of the pressure plate (10), the four first mounting blocks (11) are rectangular, and each of the first mounting blocks (11) is rotatably connected to a first roller (12) at a bottom end away from the pressure plate (10), and a side of the first roller (12) away from the first mounting block (11) is abuttedly connected to a second mounting block (13), and a bottom end of the second mounting block (13) is rotatably connected to a second roller (14), and a damping rod (15) is fixedly connected to an outer wall of a side of the second mounting block (13) away from the first roller (12), and a first spring (16) is sleeved on an outer wall of the damping rod (15), and a telescopic rod is rotatably connected to the bottom end of the pressure plate (10), and an end of the telescopic rod away from the pressure plate (10) is slidably connected to the inner wall of the support plate (9).

3. The sheet metal welding and fixing device according to claim 2, characterized in that: A positioning assembly is installed inside the pushing block (2), and the positioning assembly includes a second mounting plate (17) installed inside the pushing block (2); a third push rod (18) is connected to an outer wall of one side of the second mounting plate (17); a second spring (19) is sleeved on the outer wall of one end of the third push rod (18) away from the second mounting plate (17); a clamping block (20) is fixedly connected to the same end of the third push rod (18); a guide rail (21) is provided on the inner wall of the second mounting plate (17); a slider (22) is slidably connected to the inner wall of the guide rail (21); a pressure rod (23) is fixedly connected to one end of the slider (22) away from the guide rail (21); a second fixing plate (24) is installed on the inner wall of the second mounting shell (26); and a plurality of grooves (25) are evenly arranged on the inner wall of the second fixing plate (24).

4. The sheet metal welding and fixing device according to claim 3, characterized in that: One end of each rotating arm (5) is rotatably connected to the top end of the first mounting plate (4) via a first rotating shaft, and one end of each rotating arm (5) away from the first mounting plate (4) is rotatably connected to the bottom end of each sliding plate (6) via a second rotating shaft.

5. The sheet metal welding and fixing device according to claim 4, characterized in that: An outer wall of one side of each first mounting block (11) is fixedly connected to an outer wall of a bottom end of the pressure plate (10); one side of each second roller (14) is rotatably connected to an inner bottom wall of the support plate (9); one end of the damping rod (15) is fixedly connected to one side of the second mounting block (13); an end of the damping rod (15) away from the second mounting block (13) is fixedly connected to an inner wall of the support plate (9); one end of the first spring (16) is fixedly connected to one end of the second mounting block (13); and the other end of the first spring (16) is fixedly connected to the inner wall of the support plate (9).

6. The sheet metal welding and fixing device according to claim 5, characterized in that: The material of the pressing plate (10) is a high temperature resistant material, and the surface of the pressing plate (10) is evenly paved with anti-slip textures.

7. The sheet metal welding and fixing device according to claim 6, characterized in that: The outer wall of the third push rod (18) is slidably connected to the inner wall of the push block (2), one end of the second spring (19) is fixedly connected to the clamping block (20), and the other end of the second spring (19) is fixedly connected to the inner wall of the push block (2).

8. The sheet metal welding and fixing device according to claim 7, characterized in that: The diameter of each groove (25) matches the diameter of the clamping block (20), and the bottom end of the pushing block (2) is slidably connected to the inner wall of the second mounting shell (26).

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