An automatic welding device

Abstract

The present invention discloses an automatic welding device, which relates to the technical field of welding and aims to solve the problem of poor stability in manual welding. The key points of its technical solution are as follows: It includes a frame, on which a mounting table is fixedly connected. On the top surface of the mounting table, there is a first mold for placing a screw rod. Above the first mold, there is a second mold for mounting a workpiece. Through holes are provided on both sides of the frame. A movable plate is slidably connected to the top surface of the frame. On the side of the movable plate close to the mounting table, a number of support rods are fixedly connected. A first spring is sleeved outside the support rods, and one end of the first spring is fixedly connected to the movable plate. In the present invention, the piston of a first cylinder is used to push a pressing plate, thereby pushing the movable plate and the welding mechanism to move. When the welding mechanism moves to the infrared sensor, it can automatically weld the workpiece. The welding mechanism replaces manual welding, improving the welding stability and welding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and more particularly to an automatic welding device. Background Art

[0002] During the workpiece machining process, screws need to be welded on the workpiece surface to facilitate the installation between the workpieces. Before welding, a hole is first opened on the part of the workpiece where the screw is to be installed. During the welding process, the screw is manually inserted into the hole and placed on the frame for welding.

[0003] The workpiece is welded manually, and the screw and the workpiece are prone to skew during installation. Therefore, the worker needs to hold the workpiece and the screw with one hand and weld the screw and the workpiece with the other hand. Manual welding generally relies on one's own experience. The welding time and welding direction are not fixed, so there are likely to be discrepancies between the welded workpieces, resulting in uneven quality of the final workpiece and poor stability of the workpiece.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide an automatic welding device which has the advantages of being able to perform welding at a fixed position and having stable welding quality.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: An automatic welding device, comprising a frame, a mounting table fixedly connected to the frame, a mold 1 for placing a screw is provided on the top surface of the mounting table, and a mold 2 for mounting a workpiece is provided above the mold 1, through holes are provided on both sides of the frame, a movable plate is slidably connected to the top surface of the frame, a side of the movable plate close to the mounting table is fixedly connected to a plurality of support rods, a spring 1 is sleeved on the outer side of the support rod, one end of the spring 1 is fixedly connected to the movable plate, and the other end is fixedly connected to the top surface of the frame, the support rod is slidably connected in the through hole, a welding mechanism for welding the workpiece is provided on the movable plate, a cylinder 1 is fixedly connected to the top of the frame, a pressure plate is fixedly connected to the piston of the cylinder 1, and the pressure plate abuts against the top surface of the movable plate, the welding mechanism comprises a plurality of mounting blocks, the mounting block is slidably connected to the movable plate through a connecting piece, a connecting block is rotatably connected to the mounting block through a mounting piece, a welding head is provided on the connecting block, a mounting groove is provided on the surface of the connecting block, and the welding head is detachably connected to the mounting groove.

[0007] The present invention is further configured as follows: the mold 1 includes a flat plate 1, a plurality of grooves are provided on the top surface of the flat plate 1, rubber blocks are fixedly connected in the grooves, and a positioning groove for inserting a screw is provided on the top surface of the rubber block.

[0008] The present invention is further configured such that: the second mold includes a second flat plate and two clamping plates. The clamping plates are slidably connected to the surface of the second flat plate through a bottom plate. A through groove corresponding to the position of the groove is formed on the second flat plate. A connecting rod is fixedly connected to the mounting table. The connecting rod passes through the first flat plate and the second flat plate. A second spring is sleeved outside the connecting rod. The upper and lower ends of the second spring are respectively abutted against the top surface of the first flat plate and the bottom surface of the second flat plate. Two cylinders are fixedly connected to both sides of the mounting table. The piston of the cylinder abuts against the top surface of the second flat plate. The clamping plate is rotatably connected to the bottom plate through a torsion spring.

[0009] The present invention is further configured such that: a moving groove is formed on the second flat plate. A moving block is slidably connected in the moving groove. The bottom plate is slidably connected to the moving block. A fixing rod is threadedly connected to the bottom plate.

[0010] The present invention is further configured such that: the mounting member includes two mounting plates. A connecting groove is formed on one side of the mounting block close to the connecting block. The two mounting plates are rotatably connected in the connecting groove. One side of the mounting plate close to the connecting block is inclined inward. A push rod is fixedly connected to the connecting block. One end of the push rod away from the connecting block is fixedly connected to an abutting plate. The side wall of the abutting plate abuts against the side walls of the two mounting plates.

[0011] The present invention is further configured such that: the connecting member includes a slide rail. The slide rail is fixedly connected to the movable plate. A lead screw is rotatably connected to the slide rail. The mounting block is arranged on the lead screw. The mounting block abuts against the surface of the slide rail.

[0012] The present invention is further configured such that: a plurality of scale grooves are formed on the side wall of the mounting block. A positioning rod is rotatably connected to the side wall of the connecting block. The inclination angle of the positioning rod is the same as the inclination angle of the welding head.

[0013] The present invention is further configured such that: a receiving groove for inserting the second spring is formed on the top surface of the first flat plate.

[0014] In summary, the present invention has the following beneficial effects:

[0015] First, when the first cylinder is started, the piston of the first cylinder can push the pressing plate, thereby pushing the movable plate and the welding mechanism to move. When the welding mechanism moves to the infrared sensor, it can automatically weld the workpiece. The welding mechanism replaces manual welding, improving the welding stability and welding efficiency.

[0016] Second, when welding workpieces of different sizes, the screw rod can be rotated to drive the mounting block to slide on the slide rail, so as to realize the movement of the welding head position. Moreover, the connecting block can rotate relative to the mounting block through the mounting member. Therefore, the angle between the welding head and the workpiece can be adjusted after rotating the connecting block, making the application range of the welding head wider. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural view of the present invention Figure 1 ;

[0018] Figure 2 is a schematic structural view of the present invention Figure 2 ;

[0019] Figure 3 is a sectional view of the present invention Figure 1 ;

[0020] Figure 4 is Figure 3 an enlarged view of part A in

[0021] Figure 5 is a sectional view of the present invention Figure 2 ;

[0022] Figure 6 is Figure 5 an enlarged view of part B in

[0023] In the figure: 1, frame; 2, mounting table; 3, through hole; 4, movable plate; 5, support rod; 6, first spring; 7, first cylinder; 8, pressing plate; 9, mounting block; 10, connecting block; 11, welding head; 12, mounting groove; 13, first flat plate; 14, groove; 15, rubber block; 16, positioning groove; 17, second flat plate; 18, clamping plate; 19, through slot; 20, connecting rod; 21, second spring; 22, second cylinder; 23, bottom plate; 24, fixed rod; 25, moving slot; 26, mounting plate; 27, connecting slot; 28, abutting plate; 29, push rod; 30, slide rail; 31, screw rod; 32, receiving groove; 33, moving block; 34, scale groove; 35, positioning rod. Detailed Embodiment

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] An automatic welding device, as Figures 1-6 shown, includes a frame 1. A movable plate 4 is slidably connected to the top surface of the frame 1. A plurality of support rods 5 are fixedly connected to one side of the movable plate 4 close to the installation table 2. A first spring 6 is sleeved outside the support rods 5. One end of the first spring 6 is fixedly connected to the movable plate 4, and the other end is fixedly connected to the top surface of the frame 1. The first spring 6 is used to support the movable plate 4. Through holes 3 are formed on both sides of the frame 1. The support rods 5 are slidably connected in the through holes 3. A welding mechanism for welding workpieces is arranged on the movable plate 4. A first cylinder 7 is fixedly connected to the top of the frame 1. A pressing plate 8 is fixedly connected to the piston of the first cylinder 7. The pressing plate 8 abuts against the top surface of the movable plate 4. An infrared sensor is arranged on the frame 1 and is connected to the welding mechanism. When the first cylinder 7 is started, the piston of the first cylinder 7 can push the pressing plate 8, thereby pushing the movable plate 4 and the welding mechanism to move. When the welding mechanism moves to the infrared sensor, it can automatically weld the workpiece. The welding mechanism replaces manual welding, improving the welding stability and welding efficiency.

[0028] As Figures 1-2As shown in the figure, the welding mechanism includes several mounting blocks 9. The mounting blocks 9 are slidably connected to the movable plate 4 through connecting members. The connecting members include slide rails 30. The slide rails 30 are fixedly connected to the movable plate 4. A lead screw 31 is rotatably connected to the slide rails 30. The lead screw 31 is driven by a motor. The mounting blocks 9 are arranged on the lead screw 31. The mounting blocks 9 are in contact with the surface of the slide rails 30. A connecting block 10 is rotatably connected to the mounting blocks 9 through mounting members. A welding head 11 is arranged on the connecting block 10. An installation groove 12 is formed on the surface of the connecting block 10. The welding head 11 is detachably connected to the installation groove 12. When welding workpieces of different sizes, the lead screw 31 can be rotated to drive the mounting blocks 9 to slide on the slide rails 30, so as to realize the movement of the position of the welding head 11. And the connecting block 10 can rotate relative to the mounting blocks 9 through the mounting members. Therefore, the angle between the welding head 11 and the workpiece can be adjusted after rotating the connecting block 10, so that the use range of the welding head 11 is wider.

[0029] As Figures 3-4 shown in the figure, the mounting members include two mounting plates 26. A connecting groove 27 is formed on one side of the mounting block 9 close to the connecting block 10. The two mounting plates 26 are rotatably connected to the connecting groove 27. One side of the mounting plates 26 close to the connecting block 10 is inclined inward. A push rod 29 is fixedly connected to the connecting block 10. One end of the push rod 29 away from the connecting block 10 is fixedly connected with an abutting plate 28. The side wall of the abutting plate 28 is in contact with the side walls of the two mounting plates 26. When the angle of the connecting block 10 needs to be adjusted, the connecting block 10 can be pulled first to drive the push rod 29 and the abutting plate 28 to move out of the connecting groove 27. During the moving out process, the side of the abutting plate 28 can push the mounting plates 26, so that the two mounting plates 26 open. When rotated to a suitable angle, the connecting block 10 is pushed towards the connecting groove 27 side, so that the abutting plate 28 moves along the surface of the mounting plates 26, so that the mounting plates 26 can be clamped. This adjustment method realizes the stepless adjustment of the position of the welding head 11, enabling people to adjust the welding angle of the welding head 11 according to needs. The adjustment is convenient. Several scale grooves 34 are formed on the side wall of the mounting block 9. A positioning rod 35 is rotatably connected to the side wall of the connecting block 10. The inclination angle of the positioning rod 35 is the same as the inclination angle of the welding head 11. The positioning rod 35 and the scale grooves 34 can indicate the current angle of the welding head 11. During the subsequent adjustment process, people can restore the angle of the welding head 11 according to the position of the scale, which is convenient for the situation where welding is required at multiple positions or for workpieces.

[0030] As Figures 1-6As shown in the figure, a mounting table 2 is fixedly connected to the frame 1. On the top surface of the mounting table 2, there is a first mold for placing the screw. The first mold includes a first flat plate 13. On the top surface of the first flat plate 13, a number of grooves 14 are opened. Inside the grooves 14, rubber blocks 15 are fixedly connected. On the top surface of the rubber blocks 15, positioning grooves 16 for inserting the screw are opened. When it is necessary to weld the screw to the workpiece, first insert the screw into the positioning groove 16 from the groove 14. The rubber block 15 can clamp the screw, so that the screw stands on the first flat plate 13. For subsequent processing, above the first mold, there is a second mold for installing the workpiece. The second mold includes a second flat plate 17 and two clamping plates 18. On the second flat plate 17, through grooves 19 corresponding to the positions of the grooves 14 are opened. During the forming process of the workpiece, generally holes are left in the part where the screw needs to be installed in advance. The second flat plate 17 is used to place the workpiece. The screw on the first flat plate 13 can pass through the through groove 19 and the hole in the workpiece and be connected to the workpiece, facilitating the welding of the workpiece.

[0031] In one embodiment, a connecting rod 20 is fixedly connected to the mounting table 2. The connecting rod 20 penetrates through the first flat plate 13 and the second flat plate 17. A second spring 21 is sleeved outside the connecting rod 20. The upper and lower ends of the second spring 21 are respectively in contact with the top surface of the first flat plate 13 and the bottom surface of the second flat plate 17. The second spring 21 is arranged between the first flat plate 13 and the second flat plate 17 and is used to support the first flat plate 13 and the second flat plate 17, so that there is a space for the screw to be placed between the first flat plate 13 and the second flat plate 17. On both sides of the mounting table 2, second cylinders 22 are fixedly connected. The pistons of the second cylinders 22 are in contact with the top surface of the second flat plate 17. The second cylinders 22 are used to press the first flat plate 13 and the second flat plate 17, so that the screw passes through the through groove 19 and the hole in the workpiece and is connected. During the downward pressing process of the second cylinders 22, since the screw is restricted by the groove 14 on the first flat plate 13 and the through groove 19 on the second flat plate 17, it is not easy to be skewed, so that the welded screw and the workpiece can be kept perpendicular, thus ensuring the welding quality of the workpiece. On the top surface of the first flat plate 13, a receiving groove 32 for inserting the second spring 21 is opened. When the second flat plate 17 moves to the first flat plate 13, the second spring 21 will be compressed by extrusion. The receiving groove 32 is used to place the compressed second spring 21, so that the first flat plate 13 and the second flat plate 17 can be closely attached together, improving the stability of the second flat plate 17 and preventing the second flat plate 17 from shaking during the welding process.

[0032] Further, the clamping plate 18 is slidably connected to the surface of the second flat plate 17 through the bottom plate 23. The clamping plate 18 is rotatably connected to the bottom plate 23 through a torsion spring. When it is necessary to clamp a workpiece, the clamping plate 18 can be rotated to form an angle between the clamping plate 18 and the second flat plate 17. At this time, the torsion spring is deformed. Then, the workpiece is placed between the second flat plate 17 and the clamping plate 18, and the clamping plate 18 is released, so that the clamping plate 18 clamps the workpiece to prevent the workpiece from rotating during the welding process. A moving groove 25 is formed in the second flat plate 17. A moving block 33 is slidably connected in the moving groove 25. The bottom plate 23 is slidably connected to the moving block 33. A fixing rod 24 is threadedly connected to the bottom plate 23. When the second flat plate 17 needs to clamp workpieces of different sizes, the horizontal position of the clamping plate 18 can be adjusted by moving the moving block 33. The bottom plate 23 slides on the surface of the moving block 33, and the bottom plate 23 can drive the clamping plate 18 to move towards the center of the second flat plate 17, so that the clamping plate 18 can clamp a smaller workpiece.

[0033] The usage mode of the present invention is as follows:

[0034] First, select the workpiece to be welded and place the workpiece on the second flat plate 17. Place a screw rod below the corresponding hole of the workpiece, then insert the screw rod into the positioning groove 16, and then start the second cylinder 22 to press down the second flat plate 17 by the second cylinder 22, so that the screw rod is inserted into the corresponding hole of the workpiece. Then start the first cylinder 7 to press the movable plate 4 by the first cylinder 7, so that the movable plate 4 drives the welding head 11 to move downward. After moving to the preset position, start welding.

[0035] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. An automatic welding device, comprising a frame (1), characterized in that: A mounting table (2) is fixedly connected to the frame (1). On the top surface of the mounting table (2), there is a first mold for placing screws. Above the first mold, there is a second mold for installing workpieces. Through holes (3) are formed on both sides of the frame (1). A movable plate (4) is slidably connected to the top surface of the frame (1). On the side of the movable plate (4) close to the mounting table (2), a number of support rods (5) are fixedly connected. A first spring (6) is sleeved outside the support rod (5). One end of the first spring (6) is fixedly connected to the movable plate (4), and the other end is fixedly connected to the top surface of the frame (1). The support rod (5) is slidably connected in the through hole (3). A welding mechanism for welding workpieces is arranged on the movable plate (4). A first cylinder (7) is fixedly connected to the top of the frame (1). A pressing plate (8) is fixedly connected to the piston of the first cylinder (7). The pressing plate (8) abuts against the top surface of the movable plate (4). The welding mechanism includes a number of mounting blocks (9). The mounting blocks (9) are slidably connected to the movable plate (4) through connecting parts. A connecting block (10) is rotatably connected to the mounting block (9) through a mounting part. A welding head (11) is arranged on the connecting block (10). An installation groove (12) is formed on the surface of the connecting block (10). The welding head (11) is detachably connected in the installation groove (12); The mounting part includes two mounting plates (26). A connecting groove (27) is formed on the side of the mounting block (9) close to the connecting block (10). The two mounting plates (26) are rotatably connected in the connecting groove (27). The side of the mounting plate (26) close to the connecting block (10) is inclined inward. A push rod (29) is fixedly connected to the connecting block (10). A contact plate (28) is fixedly connected to the end of the push rod (29) away from the connecting block (10). The side wall of the contact plate (28) abuts against the side walls of the two mounting plates (26); The first mold includes a first flat plate (13). A number of grooves (14) are formed on the top surface of the first flat plate (13). A rubber block (15) is fixedly connected in the groove (14). A positioning groove (16) for inserting a screw is formed on the top surface of the rubber block (15); The second mold includes a second flat plate (17) and two clamping plates (18). The clamping plates (18) are slidably connected to the surface of the second flat plate (17) through a bottom plate (23). A through groove (19) corresponding to the position of the groove (14) is formed on the second flat plate (17). A connecting rod (20) is fixedly connected to the mounting table (2). The connecting rod (20) passes through the first flat plate (13) and the second flat plate (17). A second spring (21) is sleeved outside the connecting rod (20). The upper and lower ends of the second spring (21) respectively abut against the top surface of the first flat plate (13) and the bottom surface of the second flat plate (17). Cylinders two (22) are fixedly connected to both sides of the mounting table (2). The pistons of the cylinders two (22) abut against the top surface of the second flat plate (17). The clamping plates (18) are rotatably connected to the bottom plate (23) through torsion springs; The connecting member includes a slide rail (30), the slide rail (30) is fixedly connected to the movable plate (4), a lead screw (31) is rotatably connected to the slide rail (30), the mounting block (9) is arranged on the lead screw (31), and the mounting block (9) abuts against the surface of the slide rail (30).

2. The automatic welding device according to claim 1, characterized in that: A moving groove (25) is formed in the second flat plate (17), a moving block (33) is slidably connected in the moving groove (25), the bottom plate (23) is slidably connected to the moving block (33), and a fixing rod (24) is threadedly connected to the bottom plate (23).

3. An automatic welding device according to claim 1, characterized in that: A plurality of scale grooves (34) are formed in the side wall of the mounting block (9), a positioning rod (35) is rotatably connected to the side wall of the connecting block (10), and the inclination angle of the positioning rod (35) is the same as the inclination angle of the welding head (11).

4. An automatic welding device according to claim 1, characterized in that: A receiving groove (32) for inserting the second spring (21) is formed in the top surface of the first flat plate (13).

Images