Thermal forming steel resistance welding device

Abstract

The utility model discloses a thermal forming steel resistance welding device, which belongs to the technical field of resistance welding devices and comprises a workbench, a lower electrode cap is arranged in the middle of the top surface of the workbench, and an L-shaped support is fixedly connected to the back of the workbench. According to the resistance welding device, the first electric push rod is used for driving the first U-shaped frame and the first rotating roller to move upwards, the stacked thermal forming steel plates are jacked up through the first rotating roller, and the first motor drives the first rotating roller to rotate to drive the thermal forming steel plates to move left and right, so that the left and right positions of resistance welding of the thermal forming steel plates are adjusted; in addition, a second electric push rod drives a second U-shaped frame and a second rotating roller to move upwards, the stacked thermoforming steel plates are jacked up through the second rotating roller, a second motor drives the second rotating roller to rotate to drive the thermoforming steel plates to move front and back, the front and back positions of resistance welding of the thermoforming steel plates are adjusted, and the practicability of the resistance welding device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance welding devices, and more specifically, to a resistance welding device for hot-formed steel. Background Art

[0002] The hot stamping steel plate technology refers to heating the steel plate at a high temperature of 950 °C and then forming it once, and quickly cooling it, thereby comprehensively improving the strength of the steel plate. The yield strength reaches as high as 1000 Mpa, and each square centimeter can withstand a pressure of more than 10 tons. Using this material on the vehicle body, with almost no significant change in the vehicle body weight, the bearing capacity is increased by 30%, enabling the steel strength of the vehicle to reach a new level. When welding between two steel plates, resistance welding can be used. However, some hot-formed steel plates are relatively large in size, making it inconvenient to place the upper and lower electrodes of the resistance welding machine at appropriate positions on the upper and lower sides of the plate. In addition, the hot-formed steel is relatively heavy, making it inconvenient to load and unload the plates that need to be resistance welded. For this reason, we have proposed a resistance welding device for hot-formed steel. Content of the Utility Model

[0003] Aiming at the problems mentioned in the above background art, the purpose of the utility model is to provide a resistance welding device for hot-formed steel.

[0004] To solve the above problems, the utility model adopts the following technical solutions:

[0005] A resistance welding device for hot-formed steel, including a workbench. A lower electrode cap is arranged in the middle of the top surface of the workbench. The back of the workbench is fixedly connected with an L-shaped bracket. The top surface of the L-shaped bracket is fixedly installed with a cylinder. The output end of the cylinder extends to the bottom of the L-shaped bracket and is fixedly connected with an upper electrode cap. An upper and lower material mechanism is arranged on the L-shaped bracket. The top surface of the workbench is fixedly installed with two groups of second electric push rods. The tops of the two groups of second electric push rods are respectively fixedly connected with second U-shaped frames. Second rollers are respectively rotatably connected inside the second U-shaped frames. Second motors are fixedly installed on the end faces of the second U-shaped frames. The output shaft of the second motor is connected to the end of the rotating shaft of the second roller. The top surface of the workbench is fixedly installed with two groups of first electric push rods. The tops of the two groups of first electric push rods are respectively fixedly connected with first U-shaped frames. First rollers are rotatably connected inside the first U-shaped frames. First motors are fixedly installed at the ends of the first U-shaped frames. The output shaft of the first motor is connected to one end of the rotating shaft of the first roller.

[0006] As a preferred embodiment of the present utility model, the loading and unloading mechanism includes two square tubes fixedly sleeved on an L-shaped bracket. Screws are respectively rotatably connected to the inner sides of the two square tubes. Square columns are respectively threadedly sleeved on the outer sides of the two screws. One ends of the two square columns extend to the outside of the square tubes and are fixedly connected to a support plate. A plurality of electric hydraulic rods are fixedly installed on the top surface of the support plate. Output ends of the plurality of electric hydraulic rods extend to the bottom of the support plate and are fixedly connected to electromagnets. A double-shaft motor is fixedly installed at one end of one of the square tubes. One output shaft of the double-shaft motor is connected to one end of one of the screws. Another synchronous wheel is fixedly sleeved on the other output shaft of the double-shaft motor. One end of the other screw extends to the outside of the square tube and is fixedly sleeved with another synchronous wheel. A synchronous belt is drivingly connected between the two synchronous wheels.

[0007] As a preferred embodiment of the present utility model, a control panel is fixedly installed on the front surface of the workbench. The control panel is electrically connected to the second electric push rod, the first electric push rod, the air cylinder, the second motor, the first motor, the double-shaft motor, the electric hydraulic rod and the electromagnet respectively.

[0008] As a preferred embodiment of the present utility model, the inner wall of the square tube is in contact with the side surface of the square column.

[0009] As a preferred embodiment of the present utility model, the second roller and the first roller are arranged horizontally and vertically.

[0010] As a preferred embodiment of the present utility model, a plurality of support legs are fixedly connected to the bottom surface of the workbench.

[0011] The advantages of the present utility model are as follows:

[0012] (1) In the present utility model, the first electric push rod is used to drive the first U-shaped frame and the first roller to move upward. The stacked hot-formed steel plates are lifted by the first roller. The first motor drives the first roller to rotate to drive the hot-formed steel plates to move left and right, so as to adjust the left and right positions of the resistance welding of the hot-formed steel plates. In addition, the second electric push rod is used to drive the second U-shaped frame and the second roller to move upward. The stacked hot-formed steel plates are lifted by the second roller. The second motor drives the second roller to rotate to drive the hot-formed steel plates to move back and forth, so as to adjust the front and back positions of the resistance welding of the hot-formed steel plates, ensuring convenient adjustment of the positions of the resistance welding of some large-sized hot-formed steel plates.

[0013] (2) In the present utility model, an electric hydraulic rod is used to drive an electromagnet to move up and down. The electromagnet is energized to attract the hot forming steel plate to be resistance welded, so that the hot forming steel plate moves up to the upper part of the first roller and the second roller. In addition, the threaded fit between the screw rod and the square column is used to drive the square column, the support plate and the hot forming steel plate to move, so as to realize the feeding of the hot forming steel plate. In addition, after the hot forming steel plate is welded, the hot forming steel plate is hoisted to the ground again by the loading and unloading mechanism, realizing the function of unloading the welded hot forming steel plate and improving its practicability. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the workbench of the present utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the second U-shaped frame of the present utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the first U-shaped frame of the present utility model;

[0018] Figure 5 It is a schematic cross-sectional view of the loading and unloading mechanism of the present utility model.

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. Workbench; 2. Lower electrode cap; 3. L-shaped bracket; 4. Cylinder; 5. Upper electrode cap; 6. Loading and unloading mechanism; 7. Second electric push rod; 8. First electric push rod; 9. First U-shaped frame; 10. First roller; 11. First motor; 12. Second U-shaped frame; 13. Second roller; 14. Second motor; 15. Square tube; 16. Screw rod; 17. Square column; 18. Support plate; 19. Electric hydraulic rod; 20. Electromagnet; 21. Biaxial motor; 22. Synchronous pulley; 23. Synchronous belt; 24. Support leg; 25. Control panel. Detailed Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "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 utility model 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 utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "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 utility model can be understood according to specific circumstances.

[0024] Embodiment:

[0025] Please refer to Figures 1-5 A hot forming steel resistance welding device, which includes a workbench 1. A lower electrode cap 2 is arranged in the middle of the top surface of the workbench 1. An L-shaped bracket 3 is fixedly connected to the back of the workbench 1. A cylinder 4 is fixedly installed on the top surface of the L-shaped bracket 3. The output end of the cylinder 4 extends to the bottom of the L-shaped bracket 3 and is fixedly connected to an upper electrode cap 5. A loading and unloading mechanism 6 is arranged on the L-shaped bracket 3. Two groups of second electric push rods 7 are fixedly installed on the top surface of the workbench 1. The tops of the two groups of second electric push rods 7 are respectively fixedly connected to a second U-shaped frame 12. A second roller 13 is rotatably connected to the inner side of the second U-shaped frame 12. A second motor 14 is fixedly installed on the end face of the second U-shaped frame 12. The output shaft of the second motor 14 is connected to the end of the rotating shaft of the second roller 13. Two groups of first electric push rods 8 are fixedly installed on the top surface of the workbench 1. The tops of the two groups of first electric push rods 8 are respectively fixedly connected to a first U-shaped frame 9. A first roller 10 is rotatably connected to the inner side of the first U-shaped frame 9. A first motor 11 is fixedly installed on the end of the first U-shaped frame 9. The output shaft of the first motor 11 is connected to one end of the rotating shaft of the first roller 10.

[0026] In this embodiment, the lower electrode cap 2 and the upper electrode cap 5 are concentrically arranged so as to perform resistance welding on the hot forming steel plate through the lower electrode cap 2 and the upper electrode cap 5.

[0027] Specifically, please refer to Figure 1 and Figure 5, the loading and unloading mechanism 6 includes two square cylinders 15 fixedly sleeved on the L-shaped bracket 3. Screw rods 16 are rotatably connected to the inner sides of the two square cylinders 15 respectively. Square columns 17 are threadedly sleeved on the outer sides of the two screw rods 16 respectively. One ends of the two square columns 17 extend to the outside of the square cylinders 15 and are fixedly connected to a support plate 18. A plurality of electro-hydraulic rods 19 are fixedly installed on the top surface of the support plate 18. The output ends of the plurality of electro-hydraulic rods 19 all extend to the bottom of the support plate 18 and are fixedly connected to an electromagnet 20. A double-shaft motor 21 is fixedly installed at the end of one square cylinder 15. One output shaft of the double-shaft motor 21 is connected to one end of one screw rod 16. Another synchronous pulley 22 is fixedly sleeved on the other output shaft of the double-shaft motor 21. One end of the other screw rod 16 extends to the outside of the square cylinder 15 and is fixedly sleeved with another synchronous pulley 22. A synchronous belt 23 is connected in transmission between the two synchronous pulleys 22.

[0028] Specifically, please refer to Figures 1 to 5 , a control panel 25 is fixedly installed on the front surface of the workbench 1. The control panel 25 is electrically connected to the second electric push rod 7, the first electric push rod 8, the cylinder 4, the second motor 14, the first motor 11, the double-shaft motor 21, the electro-hydraulic rod 19 and the electromagnet 20 respectively.

[0029] In this embodiment, the control panel 25 is used to control the second electric push rod 7, the first electric push rod 8, the cylinder 4, the second motor 14, the first motor 11, the double-shaft motor 21, the electro-hydraulic rod 19 and the electromagnet 20.

[0030] Specifically, please refer to Figure 5 , the inner wall of the square cylinder 15 is in contact with the side surface of the square column 17.

[0031] In this embodiment, the inner wall of the square cylinder 15 is used to limit the square column 17, so that the square column 17 can only move along the axial direction of the screw rod 16.

[0032] Specifically, please refer to Figure 1 、 Figure 3 and Figure 4 , the second roller 13 and the first roller 10 are arranged horizontally and vertically.

[0033] In this embodiment, it is ensured that the second roller 13 can drive the hot-formed steel plate to move back and forth, and the first roller 10 can drive the hot-formed steel plate to move left and right, so as to adjust the position of the resistance welding of the hot-formed steel plate.

[0034] Specifically, please refer to Figure 1 , a plurality of support legs 24 are fixedly connected to the bottom surface of the workbench 1.

[0035] In this embodiment, the support legs 24 are used to support the device.

[0036] Working principle: When in use, first start the electric hydraulic rod 19 to drive the electromagnet 20 to move downward, so that the bottom surface of the electromagnet 20 contacts one end of the top surface of a hot forming steel plate. Energize the electromagnet 20 to generate magnetic suction force, so as to connect the electromagnet 20 and the hot forming steel plate. Then start the electric hydraulic rod 19 to drive the electromagnet 20 and the hot forming steel plate to move upward, so that the bottom surface of the hot forming steel plate moves to be flush with the top surfaces of the first roller 10 and the second roller 13. Then start the double-shaft motor 21 to drive one screw rod 16 to rotate, and at the same time drive the other screw rod 16 to rotate through the transmission between the synchronous pulley 22 and the synchronous belt 23. Drive the support plate 18 to move through the threaded fit between the screw rod 16 and the square column 17, so that the other end of the hot forming steel plate located below the support plate 18 is placed above the first roller 10 and the second roller 13. At this time, turn off the electromagnet 20 to release the fixation of the hot forming steel plate. In addition, feed another hot forming steel plate through the loading and unloading mechanism 6 again, so that the hot forming steel plate is placed at a suitable position above the previous hot forming steel plate. Then start the cylinder 4 to drive the upper electrode cap 5 to move downward, and use the upper electrode cap 5 and the lower electrode cap 2 to weld the two stacked hot forming steel plates. In addition, start the first electric push rod 8 to drive the two groups of first U-shaped frames 9 and the two first rollers 10 to move upward, and use the first rollers 10 to support the stacked hot forming steel plates. Start the first motor 11 to drive the first rollers 10 to rotate, and use the rotating first rollers 10 to drive the hot forming steel plate to move horizontally. After moving, use the first U-shaped frame 9 to drive the first rollers 10 and the hot forming steel plate to reset and move downward again, so that the top end of the lower electrode cap 2 contacts the bottom surface of the lower hot forming steel plate, thereby changing the position of the resistance welding of the hot forming steel plate left and right. Finally, start the second electric push rod 7 to drive the second U-shaped frame 12 and the second roller 13 to move upward, use the second roller 13 to support the stacked hot forming steel plates, use the second motor 14 to drive the second roller 13 to rotate, and use the rotation of the second roller 13 to drive the hot forming steel plate to move back and forth. After moving, use the second electric push rod 7 to drive the second roller 13 and the hot forming steel plate to reset and move downward again, so that the top end of the lower electrode cap 2 contacts the bottom surface of the lower hot forming steel plate, thereby changing the position of the resistance welding of the hot forming steel plate back and forth, and then perform resistance welding on the two stacked hot forming steel plates. When the welding is completed, use the loading and unloading mechanism 6 again to lift the welded hot forming steel plate to the ground, and that's it.

[0037] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its improved concept, makes equivalent substitution or change, and should be covered by the protection scope of the present utility model.

Claims

1. A hot-formed steel resistance welding device, comprising a workbench (1), characterized in that: A lower electrode cap (2) is arranged in the middle of the top surface of the workbench (1); an L-shaped bracket (3) is fixedly connected to the back of the workbench (1); a cylinder (4) is fixedly installed on the top surface of the L-shaped bracket (3); an output end of the cylinder (4) extends to the bottom of the L-shaped bracket (3) and is fixedly connected to an upper electrode cap (5); a loading and unloading mechanism (6) is arranged on the L-shaped bracket (3); two groups of second electric push rods (7) are fixedly installed on the top surface of the workbench (1); the top ends of the two groups of second electric push rods (7) are respectively fixedly connected to a second U-shaped frame (12); the inner side of the second U-shaped frame (12) is rotatably connected to a second electric push rod (7). The second U-shaped frame (12) is provided with a second motor (14) fixedly mounted on the end surface of the second U-shaped frame (12), the output shaft of the second motor (14) being connected to the end of the rotating shaft of the second roller (13), two groups of first electric push rods (8) being fixedly mounted on the top surface of the workbench (1), the top ends of the two groups of first electric push rods (8) being fixedly connected to the first U-shaped frame (9) respectively, the inner side of the first U-shaped frame (9) being rotatably connected to the first roller (10), the end of the first U-shaped frame (9) being fixedly mounted with a first motor (11), the output shaft of the first motor (11) being connected to one end of the rotating shaft of the first roller (10).

2. A hot-formed steel resistance welding device according to claim 1, characterized in that: The loading and unloading mechanism (6) comprises two square tubes (15) fixedly sleeved on the L-shaped bracket (3), the inner sides of the two square tubes (15) are rotatably connected with screw rods (16), the outer sides of the two screw rods (16) are respectively threadedly sleeved with square columns (17), one end of the two square columns (17) extends to the outside of the square tube (15) and is fixedly connected with a support plate (18), a plurality of electric hydraulic rods (19) are fixedly installed on the top surface of the support plate (18), and the output ends of the plurality of electric hydraulic rods (19) extend to the support plate (18). An electromagnet (20) is fixedly connected to the bottom of the support plate (18), a double-shaft motor (21) is fixedly installed at the end of one of the square tubes (15), an output shaft of the double-shaft motor (21) is connected to one end of a screw rod (16), the other output shaft of the double-shaft motor (21) is fixedly sleeved with a synchronous wheel (22), one end of the other screw rod (16) extends to the outside of the square tube (15) and is fixedly sleeved with another synchronous wheel (22), and a synchronous belt (23) is transmission-connected between the two synchronous wheels (22).

3. A hot-formed steel resistance welding device according to claim 2, characterized in that: A control panel (25) is fixedly mounted on the front of the workbench (1), and the control panel (25) is electrically connected to the second electric push rod (7), the first electric push rod (8), the cylinder (4), the second motor (14), the first motor (11), the dual-axis motor (21), the electric hydraulic rod (19) and the electromagnet (20), respectively.

4. A hot-formed steel resistance welding device according to claim 2, characterized in that: The inner wall of the square tube (15) and the side surface of the square column (17) are in contact with each other.

5. The hot-formed steel resistance welding device according to claim 1, characterized in that: The second rotating roller (13) and the first rotating roller (10) are arranged horizontally and vertically.

6. The hot-formed steel resistance welding device according to claim 1, characterized in that: A plurality of supporting legs (24) are fixedly connected to the bottom surface of the workbench (1).

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