Welding tool for sheet metal machining

Abstract

The invention relates to the technical field of sheet metal machining, in particular to a welding tool for sheet metal machining, which comprises a fixing frame stably placed in a machining area, a bearing assembly for placing a sheet metal part is mounted above the fixing frame, and the left side and the right side of the fixing frame are connected with moving frames through the bearing assembly; mounting seats are mounted on the outer side of the chain plate type conveying mechanism at equal intervals, suspension supporting rods are connected into the mounting seats in a penetrating mode, clamping plates are connected to one ends of the suspension supporting rods, and a fixed regulation and control plate is fixed to the upper portion of the moving frame. According to the welding tool for sheet metal machining, the clamping plates and sheet metal parts can be driven to move together through rotation of the chain plate type conveying mechanism, so that through cooperative use of the multiple sets of clamping plates, the multiple sheet metal parts can be continuously clamped and fixed, batch rapid clamping and rapid clamping releasing can be achieved, the manual adjusting time is shortened, and the working efficiency is improved. And therefore, the clamping and fixing efficiency can be improved, and the later welding efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing technology, specifically to a welding fixture for sheet metal processing. Background Technology

[0002] Sheet metal is widely used in electronics, automobiles, medical and communications fields due to its advantages such as light weight, high strength and good electrical conductivity. In the process of sheet metal manufacturing and repair, sheet metal parts need to be welded to connect or splice multiple sheet metal parts. Welding fixtures are needed when welding sheet metal to facilitate the positioning, clamping, fixing and supporting of sheet metal, so as to ensure the accuracy and quality of subsequent welding. For example, the patent application with publication number "CN120002298A" entitled "A Welding Fixture for Sheet Metal Processing" discloses that an installed drive motor facilitates the adjustment of the angle of the workpiece to be welded. When adjusting the welding angle of the sheet metal part, the drive motor operates, which adjusts the angle of the clamping component, thereby facilitating the adjustment of the sheet metal part's angle and making welding easier. Accurate adjustment of the sheet metal part's angle ensures more precise alignment of the weld joint, reducing welding defects such as incomplete penetration or misalignment. Appropriate angle adjustment can ensure reasonable thickness and uniformity of the weld, thereby improving the strength and durability of the weld joint. It can simplify welding preparation, make the welding process faster and more efficient, reduce operational complexity, and after welding, good angle adjustment can facilitate subsequent processing steps such as grinding and painting. The process is smoother, improving the overall quality of the final product. For example, the patent published in the prior art with the publication number "CN119566674A" is entitled "A Sheet Metal Welding Fixture and Welding Method Thereof". It discloses that when welding a normal sheet metal part, a robotic arm drives the adsorption component to move. The adsorption component moves to the loading point of the sheet metal part. A vacuum pump creates negative pressure in the adsorption plate through a conduit and adsorbs the sheet metal part through the adsorption hole, moving the sheet metal part to the movable processing platform component. When welding a normal sheet metal part again, the fourth servo motor drives the second connecting rod to rotate downwards. The third servo motor drives the rocker arm to rotate. The rocker arm drives the reset rod to rotate. After the rocker arm rotates to a certain angle, the cylinder drives the rocker arm to move through the first connecting rod, so that the reset rod is inserted into the adsorption hole, pushing out the sealing rod, so that the adsorption hole is connected again and providing adsorption effect again.

[0003] The welding fixtures for sheet metal processing described above use an adsorption component to hold and fix sheet metal parts in place. When welding a sheet metal part is completed and welding of the next sheet metal part is required, the adsorption component must first be released from the sheet metal part, then the sheet metal part must be moved out, and then the next sheet metal part must be moved to the processing position. Then the adsorption component must be used to hold and fix the next sheet metal part. This makes the clamping and unclamping operations cumbersome, time-consuming, and labor-intensive when batch welding multiple sheet metal parts. It also prevents the continuous clamping and fixing of multiple sheet metal parts. Therefore, we propose a welding fixture for sheet metal processing to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to provide a welding fixture for sheet metal processing, which solves the problem mentioned in the background art. In existing sheet metal welding fixtures, the sheet metal parts are held in place by an adsorption component. When welding one sheet metal part and welding the next is required, the adsorption component must be released from the sheet metal part before the sheet metal part is moved out, the next sheet metal part is moved to the processing position, and then the adsorption component is re-adsorbed and fixed to the next sheet metal part. This makes the clamping and unclamping operations cumbersome, time-consuming, and labor-intensive when batch welding multiple sheet metal parts, and prevents the continuous clamping and fixing of multiple sheet metal parts.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a welding fixture for sheet metal processing, comprising a fixed frame stably placed in the processing area, a support component for placing sheet metal parts installed above the fixed frame, and movable frames connected to the left and right sides of the fixed frame via the support component, and a chain plate type conveying mechanism installed inside the movable frame, mounting seats installed at equal intervals on the outer side of the chain plate type conveying mechanism, and a suspension rod penetrating through the interior of the mounting seat, with a clamping plate connected to one end of the suspension rod, and a fixed adjustment plate fixed above the movable frame.

[0006] Preferably, the supporting component includes a bidirectional lead screw that is rotatably mounted above the fixed frame, and both ends of the bidirectional lead screw are threaded with movable sleeves. The outer ends of the movable sleeves are fixedly connected to the movable frame, and the movable frame and the fixed frame form a sliding structure. A roller is rotatably mounted on the outer side of the movable sleeve, and a sheet metal part is placed on top of the roller.

[0007] Preferably, a transmission rod is rotatably mounted on the upper rear side of the fixing frame, and the transmission rod is connected to a row of bidirectional lead screws through a sprocket assembly to form a transmission structure.

[0008] Preferably, a contact ball is installed at the end of the suspension rod away from the clamping plate, and a snap-fit ​​groove is symmetrically opened on the outer side of the suspension rod. A snap-fit ​​block is symmetrically installed inside the mounting base, and a snap-fit ​​block is slidably connected inside the snap-fit ​​groove. A return spring is nested and connected to the outer side of the suspension rod located between the clamping plate and the mounting base.

[0009] Preferably, the inner sides of both the front and rear ends of the fixed control plate are concave arc-shaped, and the inner side of the fixed control plate is in close contact with the contact ball, and the contact ball forms a sliding structure through the fixed control plate.

[0010] Preferably, the outer side of the movable frame is equipped with movable wheels.

[0011] Preferably, the maximum distance between two adjacent rollers in the left-right direction is less than the sum of the widths of the two sheet metal parts placed above them.

[0012] Preferably, an auxiliary plate is connected to the inner side of the clamping plate via a connecting spring, and a first air storage tube is fixed to the inner side of the clamping plate. A first piston assembly is connected through and fitted inside the first air storage tube, and the outer end of the first piston assembly is connected to the auxiliary plate.

[0013] Preferably, a second air storage pipe is installed in the groove on the lower inner side of the clamping plate, and a second piston assembly is connected through and fitted inside the second air storage pipe. The upper end of the second piston assembly is connected to the adsorption plate, and a fixed suction cup is installed on the upper surface of the adsorption plate.

[0014] Preferably, the clamping plate has a U-shaped connecting pipe installed inside, with the upper end of the connecting pipe connected to the interior of the first gas storage pipe and the lower end of the connecting pipe connected to the interior of the second gas storage pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the welding fixture for sheet metal processing can continuously clamp and fix multiple sheet metal parts, enabling batch rapid clamping and rapid unclamping, reducing manual adjustment time, thereby improving clamping and fixing efficiency and subsequent welding efficiency. The specific details are as follows: (1) The inner sides of the front and rear ends of the fixed control plate are set in an inward arc shape. Then, by contacting the contact ball with the inner side of the fixed control plate, the clamping plate can automatically clamp and automatically release the sheet metal parts. At the same time, the rotation of the chain plate conveyor mechanism can drive the clamping plate and the sheet metal parts to move together. Therefore, by using multiple sets of clamping plates in combination, multiple sheet metal parts can be clamped and fixed continuously, and batch quick clamping and quick unclamping can be realized, reducing manual adjustment time, thereby improving the efficiency of clamping and fixing, and improving the efficiency of subsequent welding. (2) The rotation of the sprocket assembly can drive multiple sets of bidirectional screws to rotate, thereby causing the movable sleeves connected by threads on the left and right sides of the bidirectional screws to move towards each other, and then the movable sleeves push the movable frame to move outward, which makes it easy to adjust the distance between two adjacent rollers on the left and right sides, so that the entire welding fixture can clamp and fix sheet metal parts of different widths, which can meet different usage requirements. (3) When the auxiliary plate is in contact with the outer side of the sheet metal part, the clamping plate continues to move towards the auxiliary plate, which in turn causes the gas in the first gas storage tube to enter the second gas storage tube. This causes the second piston assembly to drive the adsorption plate to move upward, so that the fixed suction cup above the adsorption plate is tightly adsorbed and fixed to the bottom surface of the sheet metal part, thereby further improving the stability of the clamping. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the right-side structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 4 This is a top view of the idler roller structure of the present invention; Figure 5 This is a cross-sectional view of the connection between the bidirectional lead screw and the movable sleeve of the present invention. Figure 6 This is a top view schematic diagram of the chain plate conveyor mechanism of the present invention; Figure 7 This is a cross-sectional view of the connection between the suspension rod and the mounting base of the present invention. Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the three-dimensional structure of the clamping plate in Embodiment 2 of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the adsorption plate of the present invention; Figure 11 This is a partial cross-sectional view of the clamping plate in Embodiment 2 of the present invention.

[0017] In the diagram: 1. Fixed frame; 2. Moving frame; 3. Chain conveyor mechanism; 4. Mounting base; 41. Clamping block; 5. Suspension rod; 51. Contact ball; 52. Clamping groove; 6. Clamping plate; 7. Return spring; 8. Fixed control plate; 9. Bidirectional lead screw; 10. Moving sleeve; 11. Idler roller; 12. Transmission rod; 13. Sprocket assembly; 14. Auxiliary plate; 15. Adsorption plate; 151. Fixed suction cup; 16. First air storage pipe; 161. First piston assembly; 17. Connecting spring; 18. Second air storage pipe; 181. Second piston assembly; 19. Connecting pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-11 The present invention provides the following technical solution: Example 1: The welding fixture for sheet metal processing in this example not only facilitates the rearward transport of welded sheet metal parts, but also facilitates the continuous clamping and fixing of multiple sheet metal parts. It enables rapid batch clamping and unclamping, reducing manual adjustment time and thus improving clamping and fixing efficiency, which in turn improves subsequent welding efficiency. For the specific structure, please refer to the attached diagram. Figures 1-2 and appendix Figures 6-8 As shown, a fixed frame 1 is stably placed in the processing area. A support assembly for placing sheet metal parts is installed above the fixed frame 1. Moving frames 2 are connected to both sides of the fixed frame 1 via the support assembly. A chain conveyor mechanism 3 is installed inside the moving frames 2. Mounting seats 4 are installed at equal intervals on the outer side of the chain conveyor mechanism 3. A suspension rod 5 is connected through the interior of the mounting seat 4, and a clamping plate 6 is connected to one end of the suspension rod 5. A fixed adjustment plate 8 is fixed above the moving frames 2. A contact ball 51 is installed at the end of the suspension rod 5 away from the clamping plate 6, and the outer sides of the suspension rod 5 are symmetrically... A snap-fit ​​groove 52 is provided, and snap-fit ​​blocks 41 are symmetrically installed inside the mounting base 4. The snap-fit ​​blocks 41 are slidably connected inside the snap-fit ​​groove 52. A return spring 7 is nested on the outside of the suspension rod 5 located between the clamping plate 6 and the mounting base 4. The inner sides of the front and rear ends of the fixed control plate 8 are both set in an inward arc shape, and the inner side of the fixed control plate 8 is in close contact with the contact ball 51. The contact ball 51 forms a sliding structure through the fixed control plate 8. A moving wheel is installed on the outside of the moving frame 2. The maximum distance between two adjacent rollers 11 in the left and right directions is less than the sum of the widths of the two sheet metal parts placed above them.

[0020] First, place the two sheet metal parts to be welded onto the idler roller 11, then push the sheet metal parts backward, causing them to move backward on the idler roller 11. When the sheet metal parts move to contact the second set of clamping plates 6 from the front, the second set of clamping plates 6 on both sides clamp and fix the sheet metal parts. Next, start the motor in the moving frame 2. The motor in the moving frame 2 drives the chain plate conveyor mechanism 3 to rotate. When the chain plate conveyor mechanism 3 rotates, it drives multiple sets of clamping plates 6 to rotate and move. When the foremost contact ball 51 moves backward and separates from the concave arc area on the inner side of the front end of the fixed control plate 8, the fixed control plate 8 applies an inward pushing force to the contact ball 51. Then, the contact ball 51 drives the corresponding suspension rod 5 and clamping plate 6 to move inward. At this time, the suspension rod 5 slides through the mounting base 4, and the locking block 41 engages in the locking groove 52. The sliding and return spring 7 is stretched and stored, so that the left and right clamping plates 6 cooperate with each other to automatically clamp and fix the sheet metal parts, which facilitates the welding mechanism to perform welding operations at the connection of the two sheet metal parts. After welding, when the sheet metal parts need to be transported backward, as shown above, the chain plate conveyor mechanism 3 is driven by the motor to rotate. When the chain plate conveyor mechanism 3 rotates, it drives the multiple clamping plates 6 to rotate and move, so that the multiple clamping plates 6 that clamp and fix the sheet metal parts can transport the sheet metal parts backward. A conveyor belt can be installed on the rear side of the fixing frame 1. At this time, the sheet metal parts move backward stably on the roller 11. When the contact ball 51 on the last side moves to contact the concave arc area on the inner side of the rear end of the fixing control plate 8, the storage force of the return spring 7 automatically drives the clamping plate 6 to move outward, so that the clamping plate 6 at the corresponding position automatically releases the clamping and fixing of the sheet metal parts.

[0021] Meanwhile, another set of sheet metal parts to be welded can be placed on the foremost roller 11. Then, as described above, the chain conveyor mechanism 3 is driven by the motor to rotate. When the chain conveyor mechanism 3 rotates, it drives multiple sets of clamping plates 6 to rotate and move, so that the left and right sets of clamping plates 6 cooperate with each other to automatically clamp and fix the sheet metal parts. Then welding can be carried out. This operation is repeated, so that the multiple sets of clamping plates 6 can not only automatically clamp and automatically unclamp the sheet metal parts, but also move and transport the sheet metal parts backward. Therefore, by using multiple sets of clamping plates 6 in combination, multiple sheet metal parts can be clamped and fixed continuously, which can realize batch quick clamping and quick unclamping, reduce manual adjustment time, and thus improve the efficiency of clamping and fixing, and improve the efficiency of subsequent welding.

[0022] Example 2: Based on Example 1, the sheet metal welding fixture in this example discloses a different structure for the clamping plate 6, which can clamp and fix the sheet metal parts at different positions, thus further improving the stability of the clamping. The specific structure is shown in the attached drawing. Figures 1-5As shown, an auxiliary plate 14 is connected to the inner side of the clamping plate 6 via a connecting spring 17, and a first air storage tube 16 is fixed to the inner side of the clamping plate 6. A first piston assembly 161 is connected through and fitted inside the first air storage tube 16, and the outer end of the first piston assembly 161 is connected to the auxiliary plate 14. A second air storage tube 18 is installed in a slot on the lower inner side of the clamping plate 6, and a second piston assembly 181 is connected through and fitted inside the second air storage tube 18. The upper end of the second piston assembly 181 is connected to the adsorption plate 15, and a fixed suction cup 151 is installed on the upper surface of the adsorption plate 15. A U-shaped connecting tube 19 is installed inside the clamping plate 6, and the upper end of the connecting tube 19 is connected to the interior of the first air storage tube 16, and the lower end of the connecting tube 19 is connected to the interior of the second air storage tube 18.

[0023] When the fixed control plate 8 applies an inward pushing force to the contact ball 51, the contact ball 51 drives the suspension rod 5 and the clamping plate 6 to move inward together. The clamping plate 6 drives the auxiliary plate 14 to move inward, so that the auxiliary plate 14 first comes into contact with the outer side of the sheet metal part. Then, the clamping plate 6 continues to move inward, which will squeeze the first air storage pipe 16, so that the gas in the first air storage pipe 16 enters the second air storage pipe 18 through the connecting pipe 19. At this time, the connecting spring 17 stores force, and then the gas in the second air storage pipe 18 pushes the second piston assembly 181 and the adsorption plate 15 to move upward, so that the fixed suction cup 151 above the adsorption plate 15 tightly adsorbs the bottom surface of the sheet metal part. Therefore, the sheet metal part can be clamped and fixed at different positions, which can further improve the stability of the clamping.

[0024] Example 3: The sheet metal welding fixture in this example, based on Example 1, adjusts the distance between two adjacent left and right support rollers 11, allowing the entire welding fixture to clamp and fix sheet metal parts of different widths, thus meeting different usage requirements. See attached diagram for the specific structure. Figures 1-5 As shown, the support assembly includes a bidirectional lead screw 9 that is rotatably mounted above the fixed frame 1. Both ends of the bidirectional lead screw 9 are threaded with movable sleeves 10, and the outer ends of the movable sleeves 10 are fixedly connected to the movable frame 2. The movable frame 2 and the fixed frame 1 form a sliding structure. A roller 11 is rotatably mounted on the outer side of the movable sleeve 10. A sheet metal part is placed on top of the roller 11. A transmission rod 12 is rotatably mounted on the upper rear side of the fixed frame 1. The transmission rod 12 is connected to a row of bidirectional lead screws 9 through a sprocket assembly 13 and forms a transmission structure.

[0025] When clamping and fixing sheet metal parts with larger widths, first measure the sum of the widths of the two wider sheet metal parts. Then measure the shortest distance between the clamping plates 6 on the left and right sides located in the middle position. Then connect one end of the transmission rod 12 to an external motor. The motor drives the transmission rod 12 to rotate. When the transmission rod 12 rotates, it drives multiple sets of bidirectional lead screws 9 to rotate through the sprocket assembly 13. When the bidirectional lead screws 9 rotate, they drive the movable sleeves 10 connected to the outer threads at both ends to move outward synchronously. The movable sleeves 10 drive the outer rotating rollers 11 to move. Then the movable sleeves 10 push the movable frame 2 to move outward. The movable frame 2 moves outward stably through the movable wheels installed on the side. When the shortest distance between the clamping plates 6 on the left and right sides located in the middle position is equal to the sum of the widths of the two wider sheet metal parts, the motor stops, and the adjustment operation is completed. This makes it easy to adjust the distance between the two adjacent rollers 11 on the left and right sides, so that the entire welding fixture can clamp and fix sheet metal parts of different widths, which can meet different usage requirements and complete a series of tasks.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding fixture for sheet metal processing, comprising a fixed frame (1) stably placed in the processing area, characterized in that: The fixed frame (1) is equipped with a support component for placing sheet metal parts. The left and right sides of the fixed frame (1) are connected to a movable frame (2) through the support component. The inner side of the movable frame (2) is equipped with a chain plate conveyor mechanism (3). The outer side of the chain plate conveyor mechanism (3) is equipped with mounting seats (4) at equal intervals. The inside of the mounting seat (4) is connected with a suspension rod (5). One end of the suspension rod (5) is connected to a clamping plate (6). The upper part of the movable frame (2) is fixed with a fixed adjustment plate (8).

2. The welding fixture for sheet metal processing according to claim 1, characterized in that: The supporting assembly includes a bidirectional lead screw (9) that is rotatably mounted above the fixed frame (1), and movable sleeves (10) are threadedly connected to the outer sides of both the left and right ends of the bidirectional lead screw (9). The outer end of the movable sleeve (10) is fixedly connected to the movable frame (2). The movable frame (2) and the fixed frame (1) form a sliding structure. A roller (11) is rotatably mounted on the outer side of the movable sleeve (10), and a sheet metal part is placed above the roller (11).

3. The welding fixture for sheet metal processing according to claim 2, characterized in that: A transmission rod (12) is rotatably mounted on the upper rear side of the fixed frame (1). At the same time, the transmission rod (12) is connected to a row of bidirectional lead screws (9) through a sprocket assembly (13) to form a transmission structure.

4. The welding fixture for sheet metal processing according to claim 1, characterized in that: The suspension rod (5) is equipped with a contact ball (51) at one end away from the clamping plate (6), and the suspension rod (5) is symmetrically provided with a snap-fit ​​groove (52) on the outer side. The mounting base (4) is symmetrically provided with a snap-fit ​​block (41) inside. The snap-fit ​​block (41) is slidably connected inside the snap-fit ​​groove (52). The suspension rod (5) located between the clamping plate (6) and the mounting base (4) is nested with a return spring (7).

5. A welding fixture for sheet metal processing according to claim 4, characterized in that: The inner sides of both the front and rear ends of the fixed control plate (8) are concave arc-shaped, and the inner side of the fixed control plate (8) is in contact with the contact ball (51). The contact ball (51) forms a sliding structure through the fixed control plate (8).

6. The welding fixture for sheet metal processing according to claim 1, characterized in that: The movable frame (2) is equipped with movable wheels on its outer side.

7. A welding fixture for sheet metal processing according to claim 2, characterized in that: The maximum distance between two adjacent idler rollers (11) in the left-right direction is less than the sum of the widths of the two sheet metal parts placed above them.

8. The welding fixture for sheet metal processing according to claim 1, characterized in that: The inner side of the clamping plate (6) is connected to the auxiliary plate (14) by the connecting spring (17), and the inner side of the clamping plate (6) is fixed with the first gas storage pipe (16). The first gas storage pipe (16) is connected to the first piston assembly (161) through and attached to the inside, and the outer end of the first piston assembly (161) is connected to the auxiliary plate (14).

9. A welding fixture for sheet metal processing according to claim 8, characterized in that: The clamping plate (6) has a slot on its lower inner side where a second gas storage pipe (18) is installed. The second gas storage pipe (18) is connected to a second piston assembly (181) through and attached to the inside. The upper end of the second piston assembly (181) is connected to the adsorption plate (15), and a fixed suction cup (151) is installed on the upper surface of the adsorption plate (15).

10. A welding fixture for sheet metal processing according to claim 9, characterized in that: The clamping plate (6) has a U-shaped connecting pipe (19) installed inside, and the upper end of the connecting pipe (19) is connected to the interior of the first gas storage pipe (16), and the lower end of the connecting pipe (19) is connected to the interior of the second gas storage pipe (18).

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