Resistor rolling welding device

Abstract

The utility model discloses a resistor roll-in welding device, which belongs to the technical field of resistor roll-in welding and comprises a bottom plate and a fixing plate, a frame is fixedly connected onto the bottom plate, a guide rail is arranged on the front side of the frame, a slider is slidably connected outside the guide rail, and the fixing plate is fixedly connected onto the front side of the slider. An electric push rod is arranged on the fixing plate, and the output end of the electric push rod is connected with a pressing rod. According to the utility model, the electric push rod drives the pressing rod to press downwards, so that the circular electrode is in close contact with the lap joint plate, pressure is applied and the circular electrode rolls in the electrifying process, the synchronous operation flow of'heating, pressing and moving forward 'is realized, the problems of small heating range and scattered welding spots in the traditional spot welding mode are effectively solved, the welding efficiency is improved, and the welding quality is ensured. And intermetallic slag and air holes can be pressed out in continuous welding, a high-density and high-strength linear connector is formed, and the method is particularly suitable for rapid batch connection of dissimilar materials such as steel aluminum and titanium aluminum.

Description

Technical Field

[0001] This utility model belongs to the field of resistance roll welding technology, and in particular relates to a resistance roll welding device. Background Technology

[0002] Resistance welding is a method that uses the resistance heat generated by the current passing through the contact surface of the workpiece to locally heat the workpiece and achieve welding under pressure. It is widely used in automobile manufacturing, electronic packaging, aerospace and other fields. Traditional resistance spot welding is mostly suitable for the connection between the same materials. However, for welding dissimilar metals such as steel and aluminum, titanium and aluminum, due to the significant differences in physical properties such as thermal conductivity, electrical conductivity, and melting point, problems such as low welding strength, high joint brittleness, excessively thick intermetallic compound (IMC) layer, and large heat-affected zone are easily generated, which seriously restricts its mass industrial application.

[0003] In addition, most existing resistance welding equipment adopts a fixed spot welding structure, which makes it difficult to achieve continuous welding control. It is poorly adapted to scenarios with high requirements for weld consistency and sealing (such as high-strength vehicle body structures, thermal conductivity modules, etc.). At the same time, in the traditional structure, the pressure application and conductive functions of the upper and lower electrodes are difficult to move in coordination, making the welding process highly dependent on position and clamping. The equipment has a low degree of automation, slow processing cycle, and cannot meet the high efficiency requirements of modern intelligent manufacturing.

[0004] Based on this, the present invention designs a resistance roll welding device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the problems that most existing resistance welding devices adopt a fixed spot welding structure, making it difficult to achieve continuous welding control. They are also poorly adaptable to scenarios with high requirements for weld consistency and sealing (such as high-strength vehicle body structures and thermal conductivity modules). Furthermore, in traditional structures, the pressure application and conductive functions of the upper and lower electrodes are difficult to move in tandem, resulting in a high dependence on position and clamping during the welding process, low automation, slow processing cycle, and inability to meet the high efficiency requirements of modern intelligent manufacturing. Therefore, a resistance roller welding device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A resistance roll forming welding device includes a base plate and a fixed plate. A frame is fixedly connected to the base plate. A guide rail is provided on the front of the frame, and a slider is slidably connected to the outside of the guide rail. The fixed plate is fixedly connected to the front of the slider. An electric push rod is provided on the fixed plate. The output end of the electric push rod is connected to a pressure rod, which is slidably disposed within the fixed plate. A pressure block is connected to the lower end of the pressure rod, and a drive motor is connected to the back of the pressure block. A circular copper electrode is connected to the output end of the drive motor. A support plate is provided on the frame, and a horizontal plate is connected to the support plate. A rectangular copper busbar electrode is provided on the horizontal plate. A PLC control box is provided on the base plate. The PLC control box contains a coordinating current controller, a voltage controller, a pressure controller, a time controller, and a stroke controller.

[0008] As a further description of the above technical solution:

[0009] A pressure sensor is installed below the rectangular copper busbar electrode. The pressure sensor is connected to a pressure controller to detect and provide feedback on the pressure status during the welding process, so as to achieve closed-loop control.

[0010] As a further description of the above technical solution:

[0011] Two locking plates are symmetrically arranged on the rectangular copper busbar electrode. A nut is inserted inside the locking plate, and a threaded rod is threadedly connected to the nut. One end of the threaded rod is connected to a clamping plate for clamping the workpiece.

[0012] As a further description of the above technical solution:

[0013] A plate is sandwiched between the two clamping plates, and the plate overlaps the upper surface of the rectangular copper busbar electrode. The clamping plates are used to fix the position of the plate to prevent it from moving or lifting during the welding process.

[0014] As a further description of the above technical solution:

[0015] The circular copper electrode is driven by the drive motor to be configured as a rotatable structure, which is used to roll along the overlap direction of the plates during the welding process.

[0016] As a further description of the above technical solution:

[0017] The electric push rod has an adjustable stroke structure, which is used to adjust the pressing stroke of the pressure rod according to the thickness of the workpiece.

[0018] As a further description of the above technical solution:

[0019] The support plate is fixedly connected to the frame, and the horizontal plate is fixedly connected to the support plate, used to install the rectangular copper busbar electrode and support the workpiece.

[0020] As a further description of the above technical solution:

[0021] The guide rail is a linear guide rail set on the front of the frame. The slider is slidably connected to the guide rail and is used to drive the fixed plate to move up and down to achieve the pressure action.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. In this utility model, by setting the circular copper electrode as a rotatable structure and driving it to roll by a drive motor, it moves continuously along the welding direction under pressure. The electric push rod drives the pressure rod to press down, so that the circular electrode is in close contact with the overlapping plate. During the energization process, pressure and rolling are applied simultaneously, realizing the synchronous operation process of "heating, pressing and moving forward at the same time". This structure effectively solves the problems of small heating range and scattered weld points in the traditional spot welding method. It not only improves the welding efficiency, but also presses out the slag and pores between metals in continuous welding, forming a high-density and high-strength linear joint. It is particularly suitable for the rapid batch connection of dissimilar materials such as steel and aluminum, titanium and aluminum.

[0024] 2. In this utility model, the rectangular copper busbar electrode and its locking structure include a combination of a locking plate, a nut, a threaded rod, and a clamping plate, which can flexibly clamp and position plates of different thicknesses and specifications. The structure forms a stable clamping force between the clamping plate and the rectangular electrode, effectively preventing the overlapping plates from shifting or warping during the welding process. In addition, a pressure sensor is set below the rectangular electrode, which is linked with the control system to monitor the pressure changes applied to the welding area in real time, ensuring that the pressure application process is precise and controllable, thereby further improving the stability of welding quality. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a resistance roll welding device proposed in this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of a circular copper electrode in a resistance roll welding device proposed in this utility model.

[0027] Figure 3 This utility model proposes a resistance roll welding device. Figure 2 Enlarged structural diagram of section A;

[0028] Figure 4 This is a three-dimensional structural diagram of the PLC control box for a resistance roller welding device proposed in this utility model.

[0029] Legend:

[0030] 1. Base plate; 2. Frame; 3. Fixing plate; 4. Electric push rod; 5. Pressure rod; 6. Pressure block; 7. Drive motor; 8. Circular copper electrode; 9. Support plate; 10. Horizontal plate; 11. Rectangular copper busbar electrode; 12. Locking plate; 13. Nut; 14. Threaded rod; 15. Clamping plate; 16. Plate; 17. Guide rail; 18. Slider; 19. PLC control box; 20. Coordinated current controller; 21. Voltage controller; 22. Pressure controller; 23. Time controller; 24. Stroke controller; 25. Pressure sensor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-4 ,

[0033] First embodiment:

[0034] This utility model provides a technical solution: a resistance roller welding device, including a base plate 1 and a fixed plate 3. A frame 2 is fixedly connected to the base plate 1. A guide rail 17 is provided on the front of the frame 2. A slider 18 is slidably connected to the guide rail 17. The slider 18 is slidably engaged with the guide rail 17. The guide rail 17 limits the movement direction of the slider 18, so that it can only move in the vertical direction, thereby realizing the precise pressing or return of the pressure head. This guide engagement has the advantages of simple structure, high precision, and low friction, which is conducive to improving the repeatability of the pressure mechanism and the overall welding stability.

[0035] The fixed plate 3 is fixedly connected to the front of the slider 18; the fixed plate 3 is provided with an electric push rod 4, the output end of the electric push rod 4 is connected to a pressure rod 5, and the pressure rod 5 is slidably disposed in the fixed plate 3; the lower end of the pressure rod 5 is connected to a pressure block 6, the back of the pressure block 6 is connected to a drive motor 7, and the output end of the drive motor 7 is connected to a circular copper electrode 8; the back of the pressure block 6 is connected to the drive motor 7, and the motor shaft drives the circular copper electrode 8 to rotate through the pressure block 6. This structural arrangement allows the drive motor 7 not only to not affect the vertical pressure direction, but also to directly provide rotational torque. By integrating the rotation function into the pressure path, space is effectively saved, the transmission chain is simplified, and pressure stability during the rolling welding process is ensured.

[0036] A support plate 9 is mounted on the frame 2, and a horizontal plate 10 is connected to the support plate 9. A rectangular copper busbar electrode 11 is mounted on the horizontal plate 10. A PLC control box 19 is mounted on the base plate 1. The PLC control box 19 contains a coordinating current controller 20, a voltage controller 21, a pressure controller 22, a time controller 23, and a stroke controller 24. The PLC control box 19 contains the current controller, voltage controller 21, pressure controller 22, time controller 23, and stroke controller 24. The control modules work together to form the core control system of the device. The current controller and voltage controller 21 are used to adjust the electrode energizing parameters to ensure a stable and reliable welding heating process. The pressure controller 22 works with the pressure sensor 25 to achieve closed-loop control of the pressure application process and improve the consistency of the welded joint. The time controller 23 is used to accurately set the energizing time and pressure holding time for time management of the welding process. The stroke controller 24 controls the up and down stroke of the slider 18 to achieve precise control of the welding pressure application position. The overall control system can preset parameters according to different plate materials and sizes to improve the automation level and process stability of welding.

[0037] Specifically, such as Figure 2-3 As shown, a pressure sensor 25 is installed below the rectangular copper busbar electrode 11. The pressure sensor 25 is connected to the pressure controller 22 and is used to detect and provide feedback on the pressure status during the welding process in order to achieve closed-loop control.

[0038] During operation, the circular copper electrode 8 is set as a rotatable structure and driven by the drive motor 7 to roll. Under pressure, it moves continuously along the welding direction. The electric push rod 4 drives the pressure rod 5 to press down, so that the circular electrode is in close contact with the overlapping plate 16. During the power-on process, pressure and rolling are applied simultaneously, realizing the synchronous operation process of "heating, pressing and moving forward at the same time". This structure effectively solves the problems of small heating range and scattered weld points in traditional spot welding methods. It not only improves welding efficiency, but also presses out slag and pores between metals in continuous welding, forming a high-density and high-strength linear joint. It is particularly suitable for rapid batch connection of dissimilar materials such as steel and aluminum, titanium and aluminum.

[0039] Second embodiment:

[0040] Specifically, such as Figure 4As shown, two locking plates 12 are symmetrically arranged on the rectangular copper busbar electrode 11. Nuts 13 are threaded through the locking plates 12, and threaded rods 14 are threaded into the nuts 13. One end of the threaded rod 14 is connected to a clamping plate 15 for clamping the workpiece. A plate 16 is clamped between the two clamping plates 15, overlapping the upper surface of the rectangular copper busbar electrode 11. The clamping plates 15 are used to fix the position of the plate 16. The two clamping plates 15 are arranged opposite each other, clamping the overlapping plate 16 in the middle. The direct contact between the clamping plates 15 and the plate 16 forms a stable pressing surface, preventing the plate 16 from warping or shifting due to thermal expansion or vibration during welding. This structural fit ensures the accuracy of the welding position and the tightness of the contact interface, thereby improving the consistency and strength of the weld joint.

[0041] To prevent movement or warping during welding, the circular copper electrode 8 is driven by the drive motor 7 and is configured as a rotatable structure for rolling along the overlap direction of the plate 16 during welding. The electric push rod 4 is a stroke-adjustable structure for adjusting the downward stroke of the pressure rod 5 according to the workpiece thickness. The support plate 9 is fixedly connected to the frame 2, and the horizontal plate 10 is fixedly connected to the support plate 9 for mounting the rectangular copper busbar electrode 11 and supporting the workpiece. The guide rail 17 is a linear guide rail 17 set on the front of the frame 2, and the slider 18 is slidably connected to the guide rail 17 for driving the fixed plate 3 to move up and down to achieve the pressure action.

[0042] During operation, the rectangular copper busbar electrode 11 and its locking structure, including the locking plate 12, nut 13, threaded rod 14 and clamping plate 15, can flexibly clamp and position plates 16 of different thicknesses and specifications. This structure forms a stable clamping force between the clamping plate 15 and the rectangular copper busbar electrode 11, effectively preventing the overlapping plates 16 from shifting or warping during the welding process. In addition, a pressure sensor 25 is installed below the rectangular copper busbar electrode 11, which is linked with the control system to monitor the pressure changes applied to the welding area in real time, ensuring that the pressure application process is precise and controllable, thereby further improving the stability of welding quality.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A resistance roll forming welding device, comprising a base plate (1) and a fixing plate (3), characterized in that: A frame (2) is fixedly connected to the base plate (1). A guide rail (17) is provided on the front of the frame (2). A slider (18) is slidably connected to the outside of the guide rail (17). A fixed plate (3) is fixedly connected to the front of the slider (18). An electric push rod (4) is provided on the fixed plate (3). A pressure rod (5) is connected to the output end of the electric push rod (4). The pressure rod (5) is slidably disposed in the fixed plate (3). A pressure block (6) is connected to the lower end of the pressure rod (5). A drive motor is connected to the back of the pressure block (6). 7) The output end of the drive motor (7) is connected to a circular copper electrode (8); the frame (2) is provided with a support plate (9), the support plate (9) is connected with a horizontal plate (10), and a rectangular copper busbar electrode (11) is provided on the horizontal plate (1); the base plate (1) is provided with a PLC control box (19), and the PLC control box (19) is provided with a coordinated current controller (20), a voltage controller (21), a pressure controller (22), a time controller (23), and a stroke controller (24).

2. A resistance roll bonding device as defined in claim 1, wherein A pressure sensor (25) is installed below the rectangular copper busbar electrode (11). The pressure sensor (25) is connected to the pressure controller (22) and is used to detect and provide feedback on the pressure state during the welding process to achieve closed-loop control.

3. A resistance roll bonding device as defined in claim 1, wherein Two locking plates (12) are symmetrically arranged on the rectangular copper busbar electrode (11). A nut (13) is inserted inside the locking plate (12). A threaded rod (14) is threaded inside the nut (13). One end of the threaded rod (14) is connected to a clamping plate (15) for clamping the workpiece.

4. A resistance roll bonding device as defined in claim 3, wherein A plate (16) is sandwiched between the two clamping plates (15). The plate (16) overlaps the upper surface of the rectangular copper busbar electrode (11). The clamping plates (15) are used to fix the position of the plate (3) to prevent it from moving or lifting during the welding process.

5. A resistance roll pressure welding apparatus according to claim 4, wherein The circular copper electrode (8) is driven by the drive motor (7) to be configured as a rotatable structure for rolling along the overlapping direction of the plate (16) during the welding process.

6. The resistance roll pressure welding apparatus of claim 1 wherein, The electric push rod (4) has an adjustable stroke structure, which is used to adjust the downward stroke of the pressure rod (5) according to the thickness of the workpiece.

7. The resistance roll pressure welding apparatus of claim 1 wherein, The support plate (9) is fixedly connected to the frame (2), and the horizontal plate (10) is fixedly connected to the support plate (9) for mounting the rectangular copper busbar electrode (11) and supporting the workpiece.

8. The resistance roll pressure welding apparatus of claim 1 wherein, The guide rail (17) is a linear guide rail (17) set on the front of the frame (2). The slider (18) is slidably connected to the guide rail (17) and is used to drive the fixed plate (3) to move up and down to achieve the pressure action.

Images