Rolling steel battery tray pressure welding device and technology
The delay trigger mechanism of the roll-press steel battery tray pressure welding device and the magnetic sheet array adjusting the welding head pressure head pressure, the problem of misjudgment of the welding head position during welding is solved, and the stability and consistency of welding quality are achieved.
Patent Information
- Application Number
- CN202510732586.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-07-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the friction welding of battery pallets, the weld area collapse caused by thermal deformation of the workpiece and the mechanical system resonance caused by high-frequency vibration leads to misjudgment of the welding head position. The traditional pressure adjustment system cannot effectively adjust the welding head pressure, resulting in weld defects such as unfusion, holes or uneven thickness.
A roll-press steel battery tray pressure welding device is adopted to adjust the welding head pressure through a delay triggering mechanism and a magnetic chip array, and the delayed power-on of the timer and magnetic chip are used to control the position adjustment of the welding head to ensure that the pressure signal matches the process requirements and avoid misjudgment.
The stable control of the welding head pressure during welding process is achieved, the weld defects are reduced, and the stability and consistency of welding quality are ensured.
Smart Images
Figure CN120347367A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of adjusting the position of a moving workpiece during the welding process, and particularly relates to a roll-pressed steel battery tray pressure welding device and process. Background Art
[0002] Pressure welding is a welding method that realizes solid-state connection of materials by applying pressure. Among them, friction welding uses the heat generated by the high-speed friction between the welding head and the workpiece contact surface to plasticize the local material, and at the same time realizes intermolecular diffusion bonding under the action of axial pressure. In the welding of battery trays, friction welding is suitable for the connection of aluminum alloy profiles and end plates, and can meet the requirements of the tray structure for airtightness and anti-fatigue strength.
[0003] In the friction welding process, due to reasons such as uneven workpiece surface, differences in material thermal expansion coefficients, and dynamic changes in the degree of plastic deformation in the welding area, it is necessary to adjust the welding head pressure in real time. In the initial stage of friction welding, the welding head needs high pressure to quickly break the oxide layer; in the plasticization stage, a stable pressure is required to maintain heat input; in the upsetting stage, an increased pressure is required to promote grain reorganization. In the prior art, the output pressure of the welding head is monitored in real time and compared with the set value, and the servo mechanism is driven to compensate for the pressure deviation.
[0004] However, during the friction welding process of the battery tray, the collapse and rebound of the welding area caused by the thermal deformation of the workpiece, the mechanical system resonance caused by high-frequency vibration, and the size fluctuation in the thickness direction caused by the plasticization flow of the material will all cause unexpected periodic displacement of the welding head. This repeated up and down displacement will cause misjudgment of the traditional pressure adjustment system. For example, when the welding head is passively lifted due to workpiece collapse, the pressure sensor will detect an instantaneous increase in pressure, and the control system will reduce the output pressure along with the pressure change; but at this time, continuous pressurization should be required to maintain a constant pressure to ensure the stability of heat input. This coupling interference of displacement-pressure signals makes the control strategy based on pure pressure feedback fail, and finally leads to defects such as lack of fusion, holes, or uneven thickness in the weld. Summary of the Invention
[0005] In order to improve the problem that the position of the welding head cannot be self-adjusted according to the pressure change during the pressure welding process, the present application provides a roll-pressed steel battery tray pressure welding device and process.
[0006] A roll-pressed steel battery tray pressure welding device provided by the present application adopts the following technical solutions:
[0007] A roll-pressed steel battery tray pressure welding device includes a pressure welding box, a support plate, and a welding head. The support plate is slidably arranged in the pressure welding box, and the welding head is rotatably connected to the support plate. The pressure of the welding head is changed by adjusting the height of the support plate;
[0008] A support mechanism, connected to the support plate, adjusts the height of the support plate by changing its length;
[0009] A sliding tube and a sliding rod, the sliding rod is slidably connected to the sliding tube; the sliding rod is fixedly connected to the support plate;
[0010] A sliding piece, slidably arranged in the sliding tube; several sliding pieces are arranged on the moving path of the sliding rod; the sliding rod presses against the sliding piece to move the sliding piece;
[0011] A magnetic piece and a timer, the magnetic piece is slidably connected to the sliding piece; the movement of the sliding piece energizes the timer; the timer is electrically connected to the magnetic piece to control the energization of the magnetic piece;
[0012] A push rod and a contact switch two, the contact switch two is arranged between the push rod and the magnetic piece; the push rod changes the length of the support mechanism by contacting different magnetic pieces.
[0013] Optionally, the support mechanism includes: a vertical rod, a rotating tube and a vertical shaft, the rotating tube is in threaded transmission cooperation with the vertical rod; the rotating tube is slidably connected to the vertical shaft; the vertical shaft is fixedly connected to the support plate;
[0014] A strip-shaped track and a rotating rod, the rotating rod is slidably arranged in the strip-shaped track; the push rod adjusts the position of the rotating rod by contacting different magnetic pieces;
[0015] A turbine and a worm, the turbine is fixedly arranged on the periphery of the rotating tube; the rotating rod is in threaded cooperation with the worm to rotate the worm.
[0016] Optionally, a first compression spring is fixedly arranged on the support plate; the first compression spring abuts against the rotating tube.
[0017] Optionally, a number of spiral protrusions are evenly distributed on the periphery of the rotating rod, and a number of spiral grooves are evenly distributed on the inner peripheral surface of the worm, and the spiral protrusions are engaged with the spiral grooves.
[0018] Optionally, a number of magnetic blocks are fixedly arranged in the strip-shaped track, the magnetic blocks are electromagnets; the contact switch two includes a second electrical fixed piece fixedly arranged on the push rod and a second electrical moving piece fixedly arranged on the magnetic piece; the second electrical fixed piece is electrically connected to the power supply; the second electrical moving piece is connected to the magnetic piece.
[0019] Optionally, a sliding plate is slidably arranged in the pressure welding box; an oil cylinder is fixedly arranged on the pressure welding box; the piston rod of the oil cylinder is fixedly connected to the sliding plate; the vertical rod is fixedly connected to the sliding plate.
[0020] Optionally, a motor is fixedly arranged on the pressure welding box; a sleeve is fixedly connected to the output shaft of the motor; a connecting rod is slidably connected in the sleeve; the connecting rod is fixedly connected to the welding head.
[0021] Optionally, the timer is connected to the magnetic plate through a relay; the magnetic plate is an electromagnet.
[0022] Optionally, the timer and the relay are respectively connected to the power supply through a first contact switch; a partition is fixedly arranged in the sliding tube; the first contact switch is arranged between the sliding piece and the partition.
[0023] A roll - pressed steel battery tray pressure welding process provided by this application uses a roll - pressed steel battery tray pressure welding device to adjust the pressure of the welding head during the pressure welding process.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] 1. Through the mechanism of delayed triggering, the system only responds to continuous pressure abnormalities. When the welding head generates high - frequency micro - displacements due to vibration, the timer is powered off before reaching the preset time, keeping the magnetic plate in a retracted state; this solves the problem of misjudgment caused by displacement interference in traditional pressure sensors. Only when the pressure truly deviates from the set value does the adjustment start, ensuring that the pressure control signal matches the actual process requirements.
[0026] 2. After the magnetic plate is powered on, it extends to form a stepped magnetic column array, and the stacking height directly reflects the cumulative amount of pressure deviation. The height value of the ejector rod gradually lifted by the magnetic plate is converted into the power - on instruction of the corresponding magnetic block, and the moving distance of the driving rotating rod is proportional to the pressure deviation amount. Description of the Drawings
[0027] Figure 1 It is a cross - sectional view of the pressure welding box in the embodiment of this application.
[0028] Figure 2 It is a cross - sectional view of the sliding tube in the embodiment of this application.
[0029] Figure 3 It is a structural schematic diagram of the rotating rod in the embodiment of this application.
[0030] Reference numerals: 1. Pressure welding box; 2. Oil cylinder; 3. Welding head; 4. Slide plate; 5. Support plate; 6. Sleeve; 7. Connecting rod; 8. Vertical rod; 9. Rotating tube; 10. Vertical shaft; 11. First compression spring; 12. Sliding tube; 13. Slide bar; 14. Sliding cabin; 15. Accommodating cabin; 16. Contact cabin; 17. Sliding piece; 18. Second compression spring; 19. Chamfer; 20. Accommodating box; 21. Return spring; 22. Turbine; 23. Strip - shaped track; 24. Worm; 25. Ejector rod; 26. Motor; 27. Partition; 28. Magnetic plate; 29. Vertical plate; 30. Rotating rod; 31. Top groove. Detailed Embodiments
[0031] The following is combined with the attached Figures 1 - 3A further detailed description of the present application is provided.
[0032] An embodiment of the present application discloses a roll-pressed steel battery tray pressure welding device and process. The roll-pressed steel battery tray pressure welding device includes a pressure welding box 1, an oil cylinder 2 fixedly arranged on the top of the pressure welding box 1, a motor 26, and a welding head 3 arranged below the pressure welding box 1. A slide plate 4 and a support plate 5 are slidably arranged in the pressure welding box 1 along its height direction; the piston rod of the oil cylinder 2 extends into the pressure welding box 1 and is fixedly connected to the slide plate 4 for adjusting the vertical height of the slide plate 4. The slide plate 4 is connected to the support plate 5 through a support mechanism; the welding head 3 is rotatably connected to the bottom of the support plate 5; the support mechanism is used for finely adjusting the vertical height of the welding head 3 during the welding process.
[0033] The output shaft of the motor 26 extends downward into the pressure welding box 1, and a sleeve 6 is fixedly connected to the end of the output shaft of the motor 26. A connecting rod 7 is slidably connected to the sleeve 6 along the vertical direction; the output shaft of the motor 26 drives the sleeve 6 to rotate, and the connecting rod 7 rotates following the sleeve 6. The connecting rod 7 penetrates through the support plate 5 and is rotatably connected to the support plate 5; the bottom end of the connecting rod 7 is fixedly connected to the welding head 3 for providing rotational power for the welding head 3.
[0034] The support mechanism includes a vertical rod 8 fixedly arranged at the bottom end of the slide plate 4 and a rotating tube 9 rotatably connected to the vertical rod 8; the bottom end of the vertical rod 8 is in threaded transmission cooperation with the rotating tube 9, and the vertical height of the rotating tube 9 is adjusted by rotating the rotating tube 9. A vertical shaft 10 is slidably arranged in the rotating tube 9, and the bottom end of the vertical shaft 10 is fixedly connected to the support plate 5. A first compression spring 11 is sleeved on the periphery of the vertical shaft 10; the bottom end of the first compression spring 11 is fixedly connected to the support plate 5, and the top end abuts against the bottom of the rotating tube 9. Specifically, at the beginning stage of welding, the motor 26 drives the connecting rod 7 to rotate through the sleeve 6, and then drives the welding head 3 to rotate; the oil cylinder 2 pushes the slide plate 4 to move downward, and the slide plate 4 drives the welding head 3 to abut against the tray to be welded through the support plate 5.
[0035] In the initial state, the downward pressure exerted by the tray to be welded on the welding head 3 is small, and the first compression spring 11 exerts a force on the welding head 3 to keep the welding head 3 in contact with the surface of the tray to be welded; after the welding temperature gradually rises, it is necessary to move the support plate 5 downward so that the end of the welding head 3 enters the weld seam.
[0036] A pressure regulating mechanism for self-regulating the height of the support plate 5 is arranged between the support plate 5 and the slide plate 4. The pressure regulating mechanism includes a sliding tube 12 fixedly arranged on the bottom surface of the slide plate 4 and a sliding rod 13 fixedly arranged on the top surface of the support plate 5; the sliding rod 13 extends into the sliding tube 12 and is slidably connected to the sliding tube 12. A sliding chamber 14, a receiving chamber 15, and a contact chamber 16 are arranged in the sliding tube 12 along its length direction; the sliding rod 13 is slidably arranged in the sliding chamber 14; the receiving chamber 15 is arranged between the sliding chamber 14 and the contact chamber 16, the receiving chamber 15 is communicated with the sliding chamber 14, and the receiving chamber 15 and the contact chamber 16 are separated by a partition 27.
[0037] A plurality of sliding plates 17 are evenly distributed vertically along the inner side of the accommodation chamber 15; the sliding plates 17 are slidably arranged in the accommodation chamber 15; preferably, the sliding plates 17 are connected to the inner wall of the sliding tube 12 through dovetail blocks, so that the sliding plates 17 can only move along the length direction of the sliding tube 12. The sliding plates 17 are connected to the partition plate 27 through compression springs II 18, and the compression springs II 18 provide an elastic force for the sliding plates 17 to reset to the side away from the partition plate 27. Chamfers 19 are provided at the bottom corner positions on the side of the sliding plates 17 away from the partition plate 27; during the upward movement of the sliding rod 13, the sliding plates 17 are moved toward the side close to the partition plate 27 by pressing against the chamfers 19. In the initial state, the sliding rod 13 is located at the middle position of the sliding tube 12; the sliding plates 17 located below the top end of the sliding rod 13 are all in a compressed state, and the ends of the sliding plates 17 located above the top end of the sliding rod 13 are on the movement path of the sliding rod 13.
[0038] A receiving box 20 is fixedly provided at the end of the sliding plate 17 away from the sliding rod 13; the receiving box 20 penetrates through the partition plate 27 and extends into the contact chamber 16. A magnetic sheet 28 is slidably arranged in the receiving box 20; the magnetic sheet 28 is an electromagnet. A compression spring III connected to the magnetic sheet 28 is fixedly provided in the receiving box 20. The vertical inner wall of the contact chamber 16 opposite to the partition plate 27 is made of a metal material; after the magnetic sheet 28 is electrified, it moves away from the partition plate 27 by magnetic adsorption with the metal material; the compression spring III is used to drive the magnetic sheet 28 to reset toward the side close to the partition plate 27.
[0039] The magnetic sheet 28 is connected to a timer and a relay. The magnetic sheet 28 is connected to the normally open contact of the relay, and the output end of the timer is connected to the relay coil. The timer and the relay are connected to the power supply through a contact switch I. After the contact switch I is closed, the timer starts timing. After a preset time, the timer ends timing and sends a high level to the relay, and the relay controls the magnetic sheet 28 to be electrified. After the magnetic sheet 28 is electrified, it moves away from the partition plate 27 by magnetic adsorption with the metal inner wall of the contact chamber 16.
[0040] The contact switch I is arranged between the sliding plate 17 and the partition plate 27. Specifically, an electric sheet I is fixedly provided at the end of the sliding plate 17 close to the partition plate 27, and an electric fixing sheet I is fixedly provided on the side wall of the partition plate 27; after the sliding plate 17 is pressed by the sliding rod 13 and moves toward the partition plate 27, the electric sheet I is in electrical contact with the electric fixing sheet I to energize the timer and the relay; after the sliding plate 17 is separated from the sliding rod 13, the electric sheet I is separated from the electric fixing sheet I, and the timer and the relay are de-energized.
[0041] Specifically, when the welding head 3 moves into the weld seam, the sliding rod 13 moves downward relative to the sliding tube 12, and the length of the support mechanism needs to be increased to provide continuous pressure; at the same time, the number of energized magnetic discs 28 decreases, and the magnetic discs 28 located above the contact chamber 16 are received into the receiving box 20. During the welding process, when the pressure on the welding head 3 is too high, the sliding rod 13 moves upward relative to the sliding tube 12, and the length of the support mechanism needs to be shortened to reduce the pressure; since the sliding rod 13 moves upward, the number of energized timers increases; the timer that has completed timing controls the energization of the magnetic disc 28, and the magnetic disc 28 extends out of the receiving box 20, and the height of the stacked magnetic discs 28 increases.
[0042] Specifically, during the welding process, the welding head 3 vibrates slightly, and the sliding rod 13 moves back and forth vertically relative to the sliding tube 12. The sliding piece 17 in contact with the top end of the sliding rod 13 is in a frequent moving state; after the timer is energized, if the sliding rod 13 separates from the sliding piece 17 before the timing is completed, the timer will be powered off, so the magnetic disc 28 is not energized, and the height of the stacked magnetic discs 28 does not change.
[0043] A turbine 22 is fixedly sleeved on the peripheral side of the rotating tube 9. A driving mechanism for driving the turbine 22 to rotate is arranged between the support plate 5 and the sliding plate 4. The driving mechanism includes a horizontally arranged strip-shaped track 23. Preferably, a vertical plate 29 is fixedly arranged at the bottom of the sliding plate 4 to provide support for the strip-shaped track 23. A rotating rod 30 is slidably arranged in the strip-shaped track 23; a worm 24 is rotatably arranged at one end of the strip-shaped track 23; the rotating rod 30 passes through the worm 24 and is in threaded cooperation with the worm 24. Specifically, a plurality of spiral protrusions are circumferentially and uniformly distributed on the peripheral side of the rotating rod 30, and a plurality of spiral grooves are circumferentially and uniformly distributed on the inner peripheral surface of the worm 24. The spiral protrusions are engaged with the spiral grooves, so that when the rotating rod 30 moves along the axial direction of the worm 24, the worm 24 is driven to rotate. Preferably, a guiding structure is arranged in the strip-shaped track 23 to enable the rotating rod 30 to only move along the axial direction of the strip-shaped track 23.
[0044] On the inner wall of the strip-shaped track 23, several magnetic blocks are fixedly arranged along its length direction, and the magnetic blocks are electromagnets. A metal sheet is fixedly arranged on the side wall of the rotating rod 30 close to the magnetic block; after the magnetic block is energized, the rotating rod 30 is moved by magnetic adsorption of the metal sheet. The magnetic block and the power supply are electrically connected through the second contact switch. A top rod 25 is slidably arranged vertically in the contact cabin 16, and the second contact switch is arranged between the top rod 25 and the magnetic sheet 28. The second static electric piece of the second contact switch is fixedly arranged at the bottom end of the top rod 25 and is electrically connected to the power supply. The second moving electric piece of the second contact switch is fixedly arranged on the top surface of the magnetic sheet 28, and the second moving electric pieces on each magnetic sheet 28 are all connected to a magnetic block, and the arrangement order of the second moving electric pieces in the vertical direction is the same as the arrangement order of the magnetic blocks, so that after the top rod 25 contacts the magnetic sheet 28, the corresponding magnetic block is energized. A top groove 31 for accommodating the top rod 25 is arranged at the top end of the contact cabin 16, and a return spring 21 fixedly connected to the top rod 25 is fixedly arranged in the top groove 31 for driving the top rod 25 to reset downward. The bottom end of the top rod 25 is respectively provided with inclined surfaces towards the bottom corner position of the partition plate 27 and the top corner position of the magnetic sheet 28 away from the partition plate 27; after the magnetic sheet 28 contacts the top rod 25, the top rod 25 is pressed to move upward through the inclined surface.
[0045] Specifically, during the pressure welding process, when the pressure received by the welding head 3 continuously increases, the sliding rod 13 moves upward relative to the sliding tube 12, and it is necessary to move the pressing plate upward to reduce the pressure on the welding head 3. During the upward movement of the sliding rod 13, more sliding pieces 17 moving towards the partition plate 27 increase, and more timers that complete timing increase, so that the height of the vertical column of the magnetic sheet 28 gradually increases; after the magnetic sheet 28 moves, it presses the top rod 25 to move upward, the bottom end height of the top rod 25 gradually increases, and the corresponding magnetic block is energized by contacting the magnetic sheet 28. After several magnetic blocks are energized in sequence, the top rod 25 gradually rises, and at the same time, the rotating rod 30 moves towards the fixed direction under the magnetic action and drives the turbine 22 to rotate. The turbine 22 drives the slide plate 4 to rise through the rotating tube 9. When the pressure received by the welding head 3 continuously decreases, the movement process of the slide plate 4 is opposite to the above process.
[0046] Specifically, when the welding head 3 vibrates frequently during the pressure welding process, several sliding pieces 17 in contact with the top end of the sliding rod 13 are in a frequently moving state and do not trigger the energization of the magnetic sheet 28, the bottom end position of the top rod 25 remains unchanged, and the rotating rod 30 remains stationary.
[0047] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A roll-pressed steel battery tray pressure welding device, characterized in that, Comprising: A pressure welding box, a support plate and a welding head. The support plate is slidably arranged in the pressure welding box, and the welding head is rotatably connected to the support plate. The pressure of the welding head is changed by adjusting the height of the support plate; A support mechanism, connected to the support plate, and the height of the support plate is adjusted by changing the length; A sliding tube and a sliding rod, the sliding rod is slidably connected to the sliding tube; the sliding rod is fixedly connected to the support plate; Sliding pieces, slidably arranged in the sliding tube; several sliding pieces are arranged on the moving path of the sliding rod; the sliding rod presses against the sliding pieces to move the sliding pieces; Magnetic pieces and a timer, the magnetic pieces are slidably connected to the sliding pieces; the movement of the sliding pieces energizes the timer; the timer is electrically connected to the magnetic pieces to control the energization of the magnetic pieces; A push rod and a contact switch II, the contact switch II is arranged between the push rod and the magnetic pieces; the length of the support mechanism is changed by the push rod contacting different magnetic pieces.
2. The roll-pressing and resistance welding device for a steel battery tray according to claim 1, characterized in that The support mechanism includes: A vertical rod, a rotating tube and a vertical shaft, the rotating tube is in threaded transmission cooperation with the vertical rod; the rotating tube is slidably connected to the vertical shaft; the vertical shaft is fixedly connected to the support plate; A strip-shaped track and a rotating rod, the rotating rod is slidably arranged in the strip-shaped track; the position of the rotating rod is adjusted by the push rod contacting different magnetic pieces; A turbine and a worm, the turbine is fixedly arranged on the periphery of the rotating tube; the rotating rod is in threaded cooperation with the worm to rotate the worm.
3. The roll - press steel battery tray pressure welding device according to claim 2, characterized in that: A first compression spring is fixedly arranged on the support plate; the first compression spring abuts against the rotating tube.
4. A roll-pressing and resistance welding device for a steel battery tray according to claim 2, characterized in that: Several spiral protrusions are evenly distributed on the periphery of the rotating rod, and several spiral grooves are evenly distributed on the inner peripheral surface of the worm, and the spiral protrusions are engaged with the spiral grooves.
5. The roll-pressing and resistance welding device for a steel battery tray according to claim 2, wherein: Several magnetic blocks are fixedly arranged in the strip-shaped track, and the magnetic blocks are electromagnets; the contact switch II includes a second electrical fixed piece fixedly arranged on the push rod and an electrical moving piece fixedly arranged on the magnetic piece; the second electrical fixed piece is electrically connected to the power supply; the electrical moving piece is connected to the magnetic piece.
6. The roll press welding device for a steel battery tray according to claim 2, wherein: A sliding plate is slidably arranged in the pressure welding box; an oil cylinder is fixedly arranged on the pressure welding box; the piston rod of the oil cylinder is fixedly connected to the sliding plate; the vertical rod is fixedly connected to the sliding plate.
7. A roll-pressing and resistance welding device for a steel battery tray according to claim 1, characterized in that: A motor is fixedly arranged on the pressure welding box; a sleeve is fixedly connected to the output shaft of the motor; a connecting rod is slidably connected in the sleeve; the connecting rod is fixedly connected to the welding head.
8. A roll-pressing and resistance welding device for a steel battery tray according to claim 1, characterized in that: The timer is connected to the magnetic piece through a relay; the magnetic piece is an electromagnet.
9. The roll-pressed steel battery tray pressure welding device according to claim 1, characterized in that: The timer and the relay are respectively connected to the power supply through a contact switch I; a partition is fixedly arranged in the sliding tube; the contact switch I is arranged between the sliding piece and the partition.
10. A roll - pressed steel battery tray pressure welding process, characterized in that, Use the roll-pressed steel battery tray pressure welding device according to any one of claims 1-9 to adjust the pressure of the welding head during the pressure welding process.