Laser welding and fixing device for metal plate edge wrapping

Abstract

A laser welding and fixing device for metal plate edge wrapping, comprising a metal plate fixing mechanism (10) and an edge wrapping plate fixing mechanism (20), wherein the metal plate fixing mechanism (10) comprises a workpiece table (11), a pressing plate (12) and pressing plate lifting units (13), two ends of the pressing plate (12) being arranged on the workpiece table (11) by means of the pressing plate lifting units (13), and a metal plate (60) to be welded being tightly pressed between the pressing plate (12) and the workpiece table (11); and the edge wrapping plate fixing mechanism (20) comprises a guide rail (21), an elastic unit (22), a first bracket (23), a second bracket (24) and a fitting unit (25), the first bracket (23) being mounted on the guide rail (21) and being movable along the guide rail (21), the elastic unit (22) being mounted on the first bracket (23), the fitting unit (25) being mounted on the elastic unit (22) by means of the second bracket (24), and under the action of the elastic thrust of the elastic unit (22), the fitting unit (25) pressing an edge wrapping plate (70) against one side of the metal plate (60). Compared with the prior art, the metal plate (60) and the edge wrapping plate (70) are tightly fixed by means of the metal plate fixing mechanism (10) and the edge wrapping plate fixing mechanism (20), such that a gap between the metal plate (60) and the edge wrapping plate (70) can be prevented from being too large or too small, thus affecting weld formation, and is therefore conducive to improving the quality of weld formation.

Description

A laser welding fixing device for edge wrapping of metal plates Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a laser welding fixing device for edge banding of metal plates. Background Technology

[0002] In the field of laser welding edging in the metal processing industry, although laser welding technology is highly favored for its high precision, high efficiency, and good welding quality, the relative fixation and fit between the metal plate and the edging plate has always been one of the key factors restricting the improvement of welding quality in actual operation. During laser welding edging, the metal plate and the edging plate must maintain extremely high positional accuracy and a stable fit to ensure that the laser beam can accurately and uniformly act on the welding interface, thereby achieving a high-quality weld connection. However, because the metal plate and the edging plate often have different materials, thicknesses, and shapes, coupled with the thermal stress caused by rapid temperature changes during welding, it is difficult for them to maintain a stable relative position during welding, easily leading to displacement or misalignment.

[0003] This displacement phenomenon not only leads to geometrical deviations in the welded joint, affecting the product's appearance quality, but more importantly, it also causes welding defects such as incomplete fusion, porosity, and cracks, significantly reducing the mechanical properties and durability of the welded joint. These quality issues not only increase the difficulty of subsequent processing and rework but may also seriously impact the overall performance and safety of the product. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects of the prior art by providing a metal plate edge-wrapping laser welding fixing device, which effectively solves the problem of relative fixation and fit between the metal plate and the edge-wrapping plate during the laser welding edge-wrapping process, thereby improving welding quality and production efficiency.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A laser welding and fixing device for edge banding of metal plates includes a metal plate fixing mechanism and an edge banding plate fixing mechanism;

[0007] The metal plate fixing mechanism includes a workpiece table, a pressure plate, and a pressure plate lifting unit. The two ends of the pressure plate are set on the workpiece table through the pressure plate lifting unit, and the metal plate to be welded is pressed between the pressure plate and the workpiece table.

[0008] The edge-binding plate fixing mechanism includes a guide rail, an elastic unit, a first bracket, a second bracket, and a bonding unit. The first bracket is installed on the guide rail and can move along the guide rail. The elastic unit is connected to the first bracket. The bonding unit is connected to the elastic unit through the second bracket. Under the elastic thrust of the elastic unit, the bonding unit presses the edge-binding plate to be welded onto one side of the metal plate.

[0009] The metal plate and the pressure plate have a first maximum static friction force, the metal plate and the workpiece table have a second maximum static friction force, the elastic unit has an elastic thrust on the bonding unit, and the resultant force of the first maximum static friction force and the second maximum static friction force is greater than or equal to the elastic thrust.

[0010] In one embodiment, the bonding unit contacts the edge banding line.

[0011] In one embodiment, the bonding unit is one or more ball bearings, the sides of which contact the edging plate.

[0012] In one embodiment, the edge-binding plate fixing mechanism further includes a positioning unit, the positioning unit including a clamping component, the clamping component being fixed to the second bracket, and the clamping direction of the positioning unit being perpendicular to the elastic thrust direction of the elastic unit.

[0013] In one embodiment, the clamping assembly includes a first driving member, a second driving member, a first clamping head, and a second clamping head. The first clamping head and the second clamping head move toward each other via the first driving member and the second driving member, respectively, thereby clamping and fixing a pair of sides of the edge banding plate.

[0014] In one embodiment, the first clamping head makes rolling contact with the edge banding plate, and the second clamping head makes rolling contact with the edge banding plate.

[0015] In one embodiment, the positioning unit further includes a limiter connected to the workpiece stage. The limiter includes a limit plate and a moving mechanism, which drives the limit plate to be in a limited state and an open state. When in the limited state, the limit plate is attached to the edge banding plate and presses the edge banding plate against one side of the metal plate to be welded. When in the open state, the limit plate moves away from the edge banding plate.

[0016] The limiter is located on one side of the guide rail. When the edge-binding plate fixing mechanism moves along the guide rail to the position of the limiter, the limiter can be in an open state to avoid it.

[0017] In one embodiment, a sensor is provided on one side of the limiter. When the sensor detects the second bracket, the corresponding limiter changes from a limited state to an open state.

[0018] In one embodiment, the metal plate fixing mechanism further includes a slide rail fixed to the workpiece table, and the pressure plate lifting unit is connected to the slide rail so that the pressure plate can move along the slide rail as a whole.

[0019] In one embodiment, a plurality of buffer plates are sequentially provided on one side of the pressure plate for attaching to the metal plate.

[0020] In one embodiment, the second bracket is further provided with at least one welding head mounting part for fixing and mounting the laser welding head. When the first bracket drives the second bracket to move along the guide rail, the laser welding head welds the metal plate to be welded and the edge plate.

[0021] In one embodiment, the elastic unit includes a main thrust cylinder and a guide support rod. The cylinder seat and cylinder rod of the main thrust cylinder are respectively connected to a first bracket and a second bracket. The guide support rod passes through the first bracket and connects to the second bracket, or passes through the second bracket and connects to the first bracket.

[0022] In one embodiment, at least three guide support rods are arranged around the main thrust cylinder.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The aforementioned metal plate edge-wrapping laser welding fixing device is used to fix the metal plate and the edge-wrapping plate during metal plate edge welding, ensuring their relative positions remain unchanged and guaranteeing welding reliability. This laser welding fixing device uses a metal plate fixing mechanism to fix the position of the metal plate. Generally, the pressure plate is first raised using a pressure plate lifting unit to provide sufficient operating space between the workpiece table and the pressure plate. Then, the metal plate is placed on the workpiece table, and the pressure plate lifting unit is adjusted to press the pressure plate against the metal plate, thus fixing the metal plate. Because of the pressure plate lifting unit, placing and removing the metal plate is more convenient, and the tightness of the pressure can also be adjusted using the pressure plate lifting unit. Simultaneously, an edge-sealing plate fixing mechanism is used to fix the position of the edge-sealing plate. The elastic unit presses the edge-sealing plate against the side of the metal plate through the bonding unit. Since the bonding unit can move along the guide rail with the first bracket, when the laser welding head moves along the weld, the bonding unit can move together with the laser welding head, thereby achieving pressure and fixation of different welding positions of the edge-sealing plate. Therefore, the elastic unit can avoid the gap between the edge-sealing plate and the metal plate being too large or too small, which would affect the formation of the weld. The guide rail allows the bonding unit to dynamically press against the part of the edge-sealing plate that is being welded, resulting in a good fixing effect and improving the quality of weld formation.

[0025] 2. The bonding unit and the edge banding plate achieve rolling contact through ball bearings, which is conducive to a tight fit between the bonding unit and the edge banding plate. At the same time, it avoids excessive friction between the bonding unit and the edge banding plate when the bonding unit moves along the guide rail, and avoids the bonding unit interfering with the movement of the second bracket along the guide rail.

[0026] 3. The positioning unit is equipped with a first clamping head and a second clamping head to hold the upper and lower sides of the edge banding plate, thereby limiting the vertical relative position of the edge banding plate and the metal plate. This works in conjunction with the bonding unit to limit the distance between the edge banding plate and the metal plate, ensuring that the weld between the edge banding plate and the metal plate meets the requirements for both vertical and horizontal positioning. Simultaneously, a first driving component and a second driving component are respectively provided to drive the relative movement of the first and second clamping heads, effectively adjusting the distance between them and providing more operating space for the installation of the edge banding plate. Furthermore, it can clamp edge banding plates of different heights, effectively broadening the application range of the laser welding fixing device.

[0027] 4. The first clamping head and the second clamping head make rolling contact with the edge banding plate. When the clamping assembly moves along the guide rail with the second bracket, the first clamping head and the second clamping head can roll on the side of the edge banding plate. The friction between them and the edge banding plate is small, which avoids affecting the movement of the positioning unit along the guide rail and scratching the edge banding plate.

[0028] 5. The pressure plate moves closer to or further away from the edge plate along the slide rail, which is conducive to the movement of the pressure plate along the width direction of the metal plate. Therefore, the pressure plate can press the metal plate at different width positions, which is convenient for fixing metal plates of different widths or shapes.

[0029] 6. The moving mechanism on the laser welding fixing device can drive the limiting plate to switch between the limited state and the open state. When the limiting plate is in the limited state, the bonding unit, clamping assembly, and limiting plate sequentially fix the relative positions of the metal plate and the edge-sealing plate along the length direction, ensuring that the edge-sealing plate remains stationary before the weld between the metal plate and the edge-sealing plate is formed. When the limiting plate is in the limited state, the weld between the edge-sealing plate and the metal plate that the bonding unit abuts against has been formed. The laser welding head and the bonding unit move to the fixed position of the limiting plate, and the bonding unit takes over the support of the edge-sealing plate from the limiting plate. Welding is then performed on the edge-sealing plate and the metal plate at the position of the limiting plate. Therefore, the limiting plate can not only fix the relative positions of the metal plate and the edge-sealing plate, but also cooperate with the bonding unit and clamping assembly to improve the fixing effect of the edge-sealing plate. Attached Figure Description

[0030] Figure 1 is a perspective view of a laser welding fixing device in one embodiment.

[0031] Figure 2 is a perspective view of the edge-sealing plate fixing mechanism in one embodiment.

[0032] Figure 3 is a side view of the edge-sealing plate fixing mechanism in one embodiment.

[0033] Figure 4 is a perspective view of the guide rail in one embodiment.

[0034] Figure 5 is a perspective view of a metal plate fixing mechanism in one embodiment.

[0035] Figure 6 is a side view of the laser welding fixing device in another embodiment.

[0036] Figure 7 is a side view of the metal plate fixing mechanism in another embodiment.

[0037] Figure 8 is a front view of the metal plate fixing mechanism in another embodiment.

[0038] Figure 9 is a perspective view of the limiter in another embodiment.

[0039] Figure 10 is a side view of the laser welding fixing device in another embodiment.

[0040] Reference numerals: 100, Laser welding fixing device; 10, Metal plate fixing mechanism; 11, Workpiece table; 12, Pressure plate; 121, Buffer plate; 13, Pressure plate lifting unit; 131, Lifting fixing component; 132, Lifting cylinder; 133, Pressure plate slider; 14, Slide rail; 20, Edge banding plate fixing mechanism; 21, Guide rail; 211, Guide rail support component; 212, First guide rail; 213, Drive motor; 214, Second guide rail; 215, Third guide rail; 22, Elastic unit; 221, Main push cylinder; 222, Guide support rod; 23, First bracket; 231, Gear; 232, First sliding part; 233, Second sliding part; 234, First slider; 235, Second slider; 24, Second bracket; 2 5. Fitting unit; 251. U-shaped fastener; 252. Ball bearing; 26. Positioning unit; 261. First driving component; 262. Second driving component; 263. First clamping head; 264. Second clamping head; 30. Laser welding head; 31. Laser controller; 32. Laser generator; 33. Laser fastener; 34. Z-axis spacing adjustment assembly; 35. Y-axis spacing adjustment assembly; 40. Limiter; 41. Limiting plate; 411. Support part; 412. Fitting part; 42. Moving mechanism; 43. First fine-tuning bolt; 44. Fine-tuning plate; 45. Second fine-tuning bolt; 50. Equipment main frame; 51. First main frame; 52. Second main frame; 53. Support leg; 60. Metal plate; 70. Edge banding plate. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] This embodiment is implemented based on the technical solution of the present invention, and provides detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiment.

[0043] The following is a detailed description of a metal plate edge-wrapping laser welding fixing device 100 with reference to the accompanying drawings.

[0044] As shown in Figures 1, 2 and 5, in one embodiment, a metal plate edge-wrapping laser welding fixing device 100 is provided, including a metal plate fixing mechanism 10 and an edge-wrapping plate fixing mechanism 20.

[0045] The metal plate fixing mechanism 10 includes a workpiece table 11, a pressure plate 12 and a pressure plate lifting unit 13. The two ends of the pressure plate 12 are set on the workpiece table 11 through the pressure plate lifting unit 13, and the metal plate 60 to be welded is pressed between the pressure plate 12 and the workpiece table 11.

[0046] The edge banding fixing mechanism 20 includes a guide rail 21, an elastic unit 22, a first bracket 23, a second bracket 24, and a bonding unit 25. The first bracket 23 is connected to and can move along the guide rail 21. The elastic unit 22 is connected to the first bracket 23. The bonding unit 25 is connected to the elastic unit 22 through the second bracket 24. Under the elastic thrust of the elastic unit 22, the bonding unit 25 presses the edge banding 70 to be welded onto one side of the metal plate 60.

[0047] The metal plate 60 and the pressure plate 12 have a first maximum static friction force, the metal plate 60 and the workpiece table 11 have a second maximum static friction force, the elastic unit 22 has an elastic thrust on the bonding unit 25, and the resultant force of the first maximum static friction force and the second maximum static friction force is greater than or equal to the elastic thrust.

[0048] The aforementioned metal plate edge-wrapping laser welding fixing device 100 is used to fix the metal plate 60 and the edge-wrapping plate 70 during edge-wrapping welding, ensuring their relative positions remain unchanged and guaranteeing welding reliability. This laser welding fixing device 100 uses a metal plate fixing mechanism 10 to fix the position of the metal plate 60. Generally, the pressure plate 12 is first raised via the pressure plate lifting unit 13 to provide sufficient operating space between the workpiece table 11 and the pressure plate 12. Then, the metal plate 60 is placed on the workpiece table 11, and the pressure plate lifting unit 13 is adjusted to make the pressure plate 12 press against the metal plate 60, thus fixing the metal plate 60. Because of the pressure plate lifting unit 13, the placement and removal of the metal plate 60 are more convenient, and the tightness of the pressure can also be adjusted via the pressure plate lifting unit 13. Meanwhile, the edge-sealing plate fixing mechanism 20 is used to fix the position of the edge-sealing plate 70. The elastic unit 22 presses the edge-sealing plate 70 against the side of the metal plate 60 through the bonding unit 25. Since the bonding unit 25 can move along the guide rail 21 with the first bracket 23, when the welding head moves along the weld, the bonding unit 25 can move with the welding head, thereby realizing the pressing and fixing of the edge-sealing plate 70 at different welding positions. Therefore, the elastic unit 22 can avoid the gap between the edge-sealing plate 70 and the metal plate 60 being too large or too small, which would affect the formation of the weld. The guide rail 21 allows the bonding unit 25 to dynamically press the part of the edge-sealing plate 70 that is being welded, resulting in a good fixing effect and improving the quality of weld formation.

[0049] Specifically, as shown in Figures 4 and 6, in one embodiment, the guide rail 21 includes a guide rail support 211, a first guide rail 212 disposed on the guide rail support 211, and a drive motor 213. The first guide rail 212 is a rack and pinion guide rail. The first bracket 23 is provided with a gear 231 that cooperates with the first guide rail 212. The output shaft of the drive motor 213 is connected to the gear 231 to drive the gear 231 to move along the first guide rail 212. The first guide rail 212 is the main component for the sliding of the first bracket 23 along the guide rail 21, providing power for the movement of the first bracket 23 and making the sliding smoother.

[0050] Understandably, the first guide rail 212 can also be a lead screw guide rail. The first bracket 23 is equipped with a lead screw slider that cooperates with the lead screw guide rail. The drive motor 213 drives the lead screw to rotate, which can realize the movement of the bracket.

[0051] Further, as shown in Figures 4 and 6, in one embodiment, the guide rail 21 further includes a second guide rail 214 and a third guide rail 215. The first guide rail 212, the second guide rail 214, and the third guide rail 215 are parallel to each other. The second guide rail 214 and the third guide rail 215 are respectively disposed on two mutually perpendicular sides of the guide rail support member 211, and the first guide rail 212 is disposed between the second guide rail 214 and the third guide rail 215. The first bracket 23 includes a first sliding part 232 and a second sliding part 233 that are perpendicular to each other. The first sliding part 232 is provided with a first slider 234 and a second slider 235. The first slider 234 is slidably engaged with the second guide rail 214, and the second slider 235 is slidably engaged with the third guide rail 215. A gear 231 is disposed on the first sliding part 232. The second guide rail 214 and the third guide rail 215 are used to assist the first guide rail 212, making the sliding of the first bracket 23 along the guide rail 21 more stable and reliable.

[0052] The second guide rail 214 and the third guide rail 215 are both I-shaped guide rails, and the first slider 234 and the second slider 235 are groove-shaped sliders that cooperate with them.

[0053] Specifically, as shown in Figures 2 and 3, in one embodiment, the bonding unit 25 makes rolling contact and line contact with the edge-sealing plate 70.

[0054] In this specific embodiment, the bonding unit 25 can be a semi-cylindrical abutment that abuts against the edge-binding plate 70 through the tangent of the cylinder. Optionally, the bonding unit 25 can also be a row of cylindrical rollers, each roller abutting against the edge-binding plate 70 through its generatrix.

[0055] Further, as shown in Figures 2 and 3, in one embodiment, the bonding unit 25 comprises one or more ball bearings 252, the sides of which contact the edging plate 70. Multiple ball bearings 252 are arranged sequentially along the weld direction of the edging plate 70. The bonding unit 25 and the edging plate 70 achieve rolling contact through the ball bearings 252, which facilitates a tight fit between the bonding unit 25 and the edging plate 70. Simultaneously, it avoids excessive friction between the bonding unit 25 and the edging plate 70 when the bonding unit 25 moves along the guide rail 21, thus preventing the bonding unit 25 from interfering with the movement of the second support 24 along the guide rail 21.

[0056] Among them, the bonding unit 25 is equipped with a ball bearing. At this time, the bonding unit 25 occupies the smallest space, has good reliability, and better bonding performance.

[0057] Optionally, the bonding unit 25 can also be one or more rubber rollers, the circumferential surface of which abuts against the edge banding plate 70, and the multiple rubber rollers are arranged sequentially along the weld direction of the edge banding plate 70. The circumferential surface of the rubber rollers is provided with rubber, and the contact between the rubber and the edge banding plate 70 can prevent the bonding unit 25 from scratching or damaging the edge banding plate 70.

[0058] In this specific embodiment, the bonding unit 25 includes a U-shaped fastener 251, a rotating shaft, and a ball bearing 252. The U-shaped fastener 251 is connected to the second bracket 24 and its opening faces the workpiece stage 11. The two ends of the rotating shaft are fixed on the two side walls of the U-shaped fastener 251, and the central axis of the rotating shaft is set in the vertical direction. The ball bearing 252 is rotatably sleeved on the rotating shaft.

[0059] Specifically, as shown in Figures 2, 3 and 6, in one embodiment, the edge-binding plate fixing mechanism 20 further includes a positioning unit 26. The positioning unit 26 includes a clamping component, which is fixed on the second bracket 24. The clamping direction of the positioning unit 26 is perpendicular to the elastic thrust direction of the elastic unit 22.

[0060] Further, as shown in FIG2, in one embodiment, the clamping assembly includes a first driving member 261, a second driving member 262, a first clamping head 263 and a second clamping head 264. The first clamping head 263 and the second clamping head 264 move toward each other via the first driving member 261 and the second driving member 262, respectively, thereby clamping a pair of sides of the fixed edge plate 70.

[0061] The first driving member 261 and the second driving member 262 are both cylinder driving members. The first driving member 261 and the second driving member 262 are respectively connected to the two side walls of the U-shaped fixing member 251. The first driving member 261 is connected to the first clamping head 263 and is used to drive the first clamping head 263 to move in a direction close to the second clamping head 264. The second driving member 262 is connected to the second clamping head 264 and is used to drive the second clamping head 264 to move in a direction close to the first clamping head 263. The first clamping head 263 and the second clamping head 264 are symmetrically arranged in a horizontal plane and are used to abut against two opposite sides of the edge banding plate 70. The side abutted by the first clamping head 263 and the side abutted by the bonding unit 25 are two adjacent sides of the edge banding plate 70. The side abutted by the second clamping head 264 and the side abutted by the bonding unit 25 are two adjacent sides of the edge banding plate 70.

[0062] Therefore, the positioning unit is equipped with a first clamping head 263 and a second clamping head 264 to clamp the upper and lower sides of the edge-sealing plate 70, thereby limiting the vertical relative position of the edge-sealing plate 70 and the metal plate 60. This works in conjunction with the bonding unit 25, which limits the distance between the edge-sealing plate 70 and the metal plate 60, ensuring that the weld between the edge-sealing plate 70 and the metal plate 60 meets the requirements for both vertical and horizontal positioning. Simultaneously, a first driving member 261 and a second driving member 262 are respectively provided to drive the relative movement of the first clamping head 263 and the second clamping head 264. This effectively adjusts the distance between the first clamping head 263 and the second clamping head 264, providing more operating space for the installation of the edge-sealing plate 70. Furthermore, it can clamp edge-sealing plates 70 of different heights, effectively expanding the applicability of the laser welding fixing device 100.

[0063] Further, as shown in FIG3, in one embodiment, the first clamping head 263 makes rolling contact with the edge banding plate 70, and the second clamping head 264 makes rolling contact with the edge banding plate 70.

[0064] In this specific embodiment, the first clamping head 263 includes a first roller bracket and a first roller. The first roller bracket is connected to the output part of the first drive member 261, the first roller is connected to the first roller bracket, the circumferential surface of the first roller abuts against the edge plate 70, and the rotation axis of the first roller is set in the horizontal direction and perpendicular to the guide rail 21.

[0065] Understandably, the structure of the second clamping head 264 can be the same as or different from that of the first clamping head 263. In order to make the force on both sides of the edge banding plate 70 uniform and improve the clamping stability, the structure of the second clamping head 264 is the same as that of the first clamping head 263. The second clamping head 264 includes a second roller bracket and a second roller. The second roller bracket is connected to the output part of the second drive member 262, and the second roller is connected to the second roller bracket. The circumferential surface of the second roller abuts against the edge banding plate 70. The rotation axis of the second roller is set in the horizontal direction and is perpendicular to the guide rail 21.

[0066] Optionally, the second clamping head 264 and the first clamping head 263 can also be equipped with small rollers and ball bearings to achieve rolling contact with the edge banding plate 70.

[0067] The first clamping head 263 and the second clamping head 264 roll in contact with the edge banding plate 70. When the clamping assembly moves along the guide rail 21 with the second bracket 24, the first clamping head 263 and the second clamping head 264 can roll on the side of the edge banding plate 70. The friction between them and the edge banding plate 70 is small, which avoids affecting the movement of the positioning unit 26 along the guide rail 21 and scratching the edge banding plate 70.

[0068] Specifically, as shown in Figures 5 and 7, in one embodiment, the metal plate fixing mechanism 10 further includes a slide rail 14, which is fixed on the workpiece table 11. The pressure plate lifting unit 13 is connected to the slide rail 14, so that the pressure plate 12 can move along the slide rail 14 as a whole.

[0069] Furthermore, the guide rail 14 is positioned in the direction where the metal plate 60 and the edging plate 70 are opposite each other, meaning that the pressure plate 12 can move closer to or further away from the edging plate 70 along the guide rail 14. The guide rail 14 can be an I-shaped guide rail. The pressure plate lifting unit 13 is provided with a pressure plate slider 133 that cooperates with the guide rail 14. The pressure plate slider 133 can drive the pressure plate 12 to move closer to or further away from the edging plate 70 along the guide rail 14. The guide rail 14 facilitates the movement of the pressure plate 12 along the width direction of the metal plate 60. Therefore, the pressure plate 12 can press down on different width positions of the metal plate 60, which is convenient for fixing metal plates 60 of different widths or shapes.

[0070] The pressure plate lifting unit 13 can be a manual screw lifting structure, as long as it can achieve the function of lifting the pressure plate 12. In this solution, the pressure plate lifting unit 13 includes a lifting fixing component 131 and a lifting cylinder 132. The lifting fixing component 131 is connected to the slide rail 14, and the lifting cylinder 132 is mounted on the lifting fixing component 131. The output part of the lifting cylinder 132 is connected to the pressure plate 12 and is used to drive the pressure plate 12 to move vertically, so that the pressure plate 12 moves closer to or further away from the metal plate 60. Multiple guide rods are also provided between the lifting fixing component 131 and the pressure plate 12. The guide rods move through the lifting fixing component 131 and are connected to the pressure plate 12 to improve the stability and reliability of the lifting.

[0071] As shown in Figure 8, in this specific embodiment, there are two pressure plate lifting units 13, which are connected to both ends of the pressure plate 12, so that both ends of the pressure plate 12 can be lifted and lowered simultaneously, which facilitates the expansion of the installation space of the metal plate 60.

[0072] Furthermore, a plurality of buffer plates 121 are arranged sequentially on one side of the pressure plate 12 for bonding with the metal plate 60. The buffer plates 121 can be rubber plates to increase the friction between the pressure plate 12 and the metal plate 60, and the plurality of buffer plates 121 are arranged sequentially along the length of the pressure plate 12.

[0073] In this specific embodiment, the distance between two adjacent buffer plates 121 can be equal or unequal. When the distance between two adjacent buffer plates 121 can be equal, multiple buffer plates 121 are evenly spaced. Or when the distance between two adjacent buffer plates 121 is unequal, the distance between two adjacent buffer plates 121 can be set according to the stress distribution of the metal plate. The distance between two adjacent buffer plates 121 exhibits a normal distribution, first increasing to the maximum and then decreasing.

[0074] Specifically, as shown in Figures 2 and 6, in one embodiment, the second bracket 24 is further provided with at least one welding head mounting part for fixing and mounting the laser welding head 30. When the first bracket 23 drives the second bracket 24 to move along the guide rail 21, the laser welding head 30 welds the metal plate 60 to be welded and the edge plate 70.

[0075] In this specific embodiment, as shown in FIG10, the second bracket 24 is provided with two laser welding heads. The two laser welding heads 30 are fixed on the second bracket 24 and are arranged opposite each other in the vertical direction. When the first bracket 23 drives the second bracket 24 to move along the guide rail 21, the two laser welding heads 30 simultaneously weld the metal plate 60 to be welded and the edge plate 70.

[0076] Further, as shown in Figure 2, in one embodiment, the laser welding fixing device 100 is provided with a laser controller 31, a laser generator 32, and a laser fixing component 33. The laser fixing component 33 is connected to the second bracket 24. The laser controller 31, the laser generator 32, and the laser welding head 30 are all disposed on the laser fixing component 33. The laser welding head 30 is connected to the laser generator 32 and is used to guide the laser generated by the first laser generator 32 to be projected to a preset position. The laser controller 31 is connected to the laser generator 32 and is used to control the laser generation time, intensity, and other parameters of the laser generator 32, as well as to control the switching on and off of the laser generator 32.

[0077] Further, as shown in Figure 6, in one embodiment, the laser welding fixing device 100 is also provided with a z-axis spacing adjustment component 34 and a y-axis spacing adjustment component 35. The z-axis spacing adjustment component 34 is connected to the second bracket 24, and the y-axis spacing adjustment component 35 is connected to the z-axis spacing adjustment component 34. The laser welding head 30 is connected to the y-axis spacing adjustment component 35. The y-axis spacing adjustment component 35 is used to drive the laser welding head 30 to move along the y-axis, and the z-axis spacing adjustment component 34 is used to drive the laser welding head 30 to move along the z-axis. The y-axis direction and the z-axis direction are perpendicular to each other and both are perpendicular to the guide rail 21.

[0078] Specifically, as shown in Figure 6, in one embodiment, the elastic unit 22 includes a main thrust cylinder 221 and a guide support rod 222. The cylinder seat and cylinder rod of the main thrust cylinder 221 are respectively connected to the first bracket 23 and the second bracket 24. The guide support rod 222 passes through the first bracket 23 and connects to the second bracket 24, or passes through the second bracket 24 and connects to the first bracket 23. The main thrust cylinder 221 is a spring cylinder.

[0079] Understandably, the elastic unit 22 can also be a spring assembly and a hydraulic cylinder, as long as it can achieve relative movement of the second support 24 between the first support 23 and elastic pressure of the fitting unit 25.

[0080] Furthermore, as shown in FIG6, in one embodiment, at least three guide support rods 222 are arranged around the main thrust cylinder 221.

[0081] Specifically, as shown in Figures 6, 7, and 8, in one embodiment, the positioning unit 26 further includes a limiter 40, which is connected to the workpiece stage 11. The limiter 40 includes a limit plate 41 and a moving mechanism 42. The moving mechanism 42 drives the limit plate 41 to be in a limited state and an open state. When in the limited state, the limit plate 41 is attached to the edge banding plate 70 and presses the edge banding plate 70 against one side of the metal plate 60 to be welded. When in the open state, the limit plate 41 moves away from the edge banding plate 70. The limiter 40 is located on one side of the guide rail 21. When the edge banding plate fixing mechanism moves along the guide rail to the position of the limiter, the limiter can be in the open state to avoid obstruction.

[0082] The workpiece table 11 is provided with at least two limiters 40. Each limiter 40 includes a limit plate 41 and a moving mechanism 42. The moving mechanism 42 drives the limit plate 41 to be in a limited state and an open state. When in the limited state, the limit plate 41 is attached to the edge banding plate 70 and presses the edge banding plate 70 against one side of the metal plate 60 to be welded. When in the open state, the limit plate 41 moves away from the edge banding plate 70. The limiters 40 are located on one side of the guide rail 21 and are set along the direction of the guide rail 21. When the edge banding plate fixing mechanism 20 moves along the guide rail 21 to the position of one of the limiters 40, the limiter 40 can be in the open state to avoid it.

[0083] The limiter 40 on the laser welding fixing device 100 is always located behind the bonding unit 25. The moving mechanism 42 can drive the limit plate 41 to switch between the limited state and the open state. When the limit plate 41 is in the limited state, the bonding unit 25 and the limit plate 41 fix the relative positions of the metal plate 60 and the edge plate 70 along the length direction, ensuring that the edge plate 70 remains stationary before the weld between the metal plate 60 and the edge plate 70 is formed. When the previous limit plate 41 is in the open state, the next limit plate 41 is still... However, in the limited position, the weld between the edge plate 70 and the metal plate 60 of the previous limiting plate 41 has been formed, and the edge plate 70 no longer needs the support of the previous limiting plate 41. The laser welding head 30 and the edge-fitting unit move to the position of the previous limiting plate 41 and weld the edge plate 70 and the metal plate 60 at the position of the previous limiting plate 41. Therefore, the limiting plate 41 can not only fix the relative position of the metal plate 60 and the edge plate 70, but also cooperate with the edge-fitting unit to improve the fixing effect of the edge plate 70.

[0084] Further, as shown in Figures 7 and 9, in one embodiment, the limiting plate 41 is movably connected to the workpiece table 11, allowing it to rotate relative to the workpiece table 11 about a horizontal axis. The moving mechanism 42 is a telescopic cylinder, which is rotatably connected to the workpiece table 11, allowing it to rotate relative to the workpiece table 11 about a horizontal axis. The output shaft of the telescopic cylinder is rotatably connected to the limiting plate 41 about a horizontal axis. When the telescopic cylinder is in the extended state, the limiting plate 41 is in the limited state. When the telescopic cylinder is in the retracted state, the limiting plate 41 is in the open state. The workpiece table 11 is provided with a working surface for placing the metal plate 60. When the telescopic cylinder switches from the extended state to the retracted state, the limiting plate 41 rotates away from the working surface.

[0085] Further, as shown in Figure 9, in one embodiment, the limiting plate 41 includes a support portion 411 and a contact portion 412 connected to each other. The support portion 411 is rotatably connected to the workpiece stage 11, and the moving mechanism 42 is rotatably connected to the support portion 411. When the limiting plate 41 is in the limiting state, the support portion 411 is parallel to the working surface and is used to support the edge banding plate 70. The contact portion 412 is located on the side of the edge banding plate 70 away from the metal plate 60 and abuts against the edge banding plate 70. When the limiting plate 41 is in the open state, the support portion 411 forms an angle with the working surface. The angle between the support portion 411 and the working surface is greater than 45°. To avoid the limiting plate 41 blocking the laser and interfering with the movement of the bracket along the guide rail 21, the angle between the support portion 411 and the workpiece stage 11 can be set to 90 degrees.

[0086] The support portion 411 and the fitting portion 412 are arranged at an angle to each other. The angle between the support portion 411 and the fitting portion 412 depends on the connection direction between the metal plate 60 and the edge plate 70. Generally, the edge plate 70 is arranged parallel to the side of the metal plate 60, so the support portion 411 and the fitting portion 412 can be arranged perpendicular to each other.

[0087] In this specific embodiment, as shown in FIG9, the limiting plate 41 is provided with a first fine adjustment bolt 43. The first fine adjustment bolt 43 passes through the support part 411 and abuts against the workpiece table 11. Therefore, by rotating the first fine adjustment bolt 43, the height distance between the support plate and the workpiece table 11 can be controlled, thereby controlling the relative position of the edge plate 70 and the metal plate 60 in height, ensuring that the upper side of the edge plate 70 is aligned with the upper side of the metal plate 60, and improving the flexibility of the height position of the edge plate 70 and the metal plate 60 during the welding process.

[0088] The limiting plate 41 is provided with a fine-adjustment plate 44 and a second fine-adjustment bolt 45. The fine-adjustment plate 44 is provided on the support part 411 and is used to abut against the edge plate 70. The second fine-adjustment bolt 45 passes through the fitting part 412 and is connected to the fine-adjustment plate 44. Rotating the second fine-adjustment bolt 45 can push the fine-adjustment plate 44, thereby adjusting the size of the gap between the edge plate 70 and the metal plate 60, ensuring that the edge plate 70 and the metal plate 60 are completely fitted together.

[0089] In this specific embodiment, the fine-tuning plate 44 is provided with a right-angled groove, and the edge-binding plate 70 is placed in the right-angled groove.

[0090] Furthermore, in one embodiment, a sensor is provided on one side of each limiter 40. When the sensor detects the second bracket 24, the corresponding limiter 40 changes from a limited state to an open state. The sensor is electrically connected to the moving mechanism 42 of the corresponding limiter 40. When the sensor detects the second bracket 24, the moving mechanism 42 drives the limiter 40 to change from a limited state to an open state.

[0091] Specifically, as shown in Figures 1 and 7, in one embodiment, the synchronous welding device further includes a main frame 50. The main frame includes a first main frame 51 for fixing the guide rail 21 and a second main frame 52 for fixing the workpiece table 11. The first main frame 51 and the second main frame 52 are detachably connected. Both the first main frame 51 and the second main frame 52 are provided with multiple legs 53. The legs 53 are connected to the first main frame 51 or the second main frame 52 through a leg 53 connector. The legs 53 are connected to the leg 53 connector through an adjusting bolt. Therefore, the height of the legs 53 can be changed by rotating the adjusting bolt, which facilitates the adjustment of the level and working height of the first main frame 51 or the second main frame 52.

[0092] As shown in Figures 2 and 3, in one embodiment, a edging plate fixing mechanism 20 is provided, including a guide rail 21, an elastic unit 22, a first bracket 23, a second bracket 24, a bonding unit 25, and a positioning unit 26;

[0093] The first bracket 23 is connected to and can move along the guide rail 21, the elastic unit 22 is connected to the first bracket 23, and the fitting unit 25 is connected to the elastic unit 22 through the second bracket 24.

[0094] Under the elastic thrust of the elastic unit 22, the bonding unit 25 presses the edge plate 70 to be welded onto one side of the metal plate 60 to be welded.

[0095] The positioning unit 26 includes a clamping assembly, which is fixed to the second bracket 24. The clamping direction of the positioning unit 26 is perpendicular to the elastic thrust direction of the elastic unit 22.

[0096] The aforementioned edge-sealing plate fixing mechanism 20 is used to fix the edge-sealing plate 70 during the welding of the metal plate 60, ensuring that the relative position of the edge-sealing plate 70 and the metal plate 60 remains unchanged and guaranteeing the reliability of the welding. The elastic unit 22 presses the edge-sealing plate 70 against the side of the metal plate 60 through the bonding unit 25, and the clamping assembly clamps the upper and lower sides of the edge-sealing plate 70, limiting the vertical relative position of the edge-sealing plate 70 and the metal plate 60, thus fully ensuring that the weld between the edge-sealing plate 70 and the metal plate 60 meets the requirements for both vertical and horizontal positioning. Since the bonding unit 25 and the clamping assembly can move along the guide rail 21 with the first bracket 23, they can move along the weld seam with the welding head, thereby achieving pressure and fixation of different welding positions of the edge banding plate 70. Since the elastic unit 22 can prevent the gap between the edge banding plate 70 and the metal plate 60 from being too large or too small, thus affecting the formation of the weld seam, and the guide rail 21 enables the bonding unit 25 to dynamically press against the part of the edge banding plate 70 that is being welded, the fixing effect is good and it is beneficial to improve the quality of weld seam formation.

[0097] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0098] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0099] In this invention, unless otherwise explicitly specified and limited, the term "installed in" is equivalent to "connected," and the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0100] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0101] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0102] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A laser welding fixing device for edge banding of metal plates, characterized in that, It includes a metal plate fixing mechanism (10) and an edge-sealing plate fixing mechanism (20); The metal plate fixing mechanism (10) includes a workpiece table (11), a pressure plate (12) and a pressure plate lifting unit (13). The two ends of the pressure plate (12) are set on the workpiece table (11) through the pressure plate lifting unit (13), and the metal plate (60) to be welded is pressed between the pressure plate (12) and the workpiece table (11). The edge-sealing plate fixing mechanism (20) includes a guide rail (21), an elastic unit (22), a first bracket (23), a second bracket (24), and a bonding unit (25). The first bracket (23) is mounted on the guide rail (21) and can move along the guide rail (21). The elastic unit (22) is mounted on the first bracket (23). The bonding unit (25) is mounted on the elastic unit (22) through the second bracket (24). Under the elastic thrust of the elastic unit (22), the bonding unit (25) presses the edge-sealing plate (70) to be welded against one side of the metal plate (60). The edge-sealing plate fixing mechanism (20) also includes a positioning unit (26). The positioning unit (26) includes a clamping assembly. The clamping assembly is fixed on the second bracket (24). The clamping direction of the positioning unit (26) is perpendicular to the elastic thrust direction of the elastic unit (22), clamping and fixing a pair of sides of the edge-sealing plate (70). The metal plate (60) and the pressure plate (12) have a first maximum static friction force, the metal plate (60) and the workpiece table (11) have a second maximum static friction force, the elastic unit (22) has an elastic thrust on the bonding unit (25), and the resultant force of the first maximum static friction force and the second maximum static friction force is greater than or equal to the elastic thrust. The second bracket (24) is also provided with at least one welding head mounting part for fixing and mounting the laser welding head (30). When the first bracket (23) drives the second bracket (24) to move along the guide rail (21), the laser welding head (30) welds the metal plate (60) to be welded and the edge plate (70).

2. The metal plate edge-sealing laser welding fixing device according to claim 1, characterized in that, The bonding unit (25) is in line contact with the edge-sealing plate (70).

3. The metal plate edge-sealing laser welding fixing device according to claim 1, characterized in that, The bonding unit (25) is one or more ball bearings, the side of which contacts the edge plate (70).

4. The metal plate edge laser welding fixing device according to claim 1, characterized in that, The clamping assembly includes a first drive member (261), a second drive member (262), a first clamping head (263), and a second clamping head (264). The first clamping head (263) and the second clamping head (264) move toward each other via the first drive member (261) and the second drive member (262), respectively, thereby clamping and fixing a pair of sides of the edge banding plate (70).

5. The metal plate edge laser welding fixing device according to claim 4, characterized in that, The first clamping head (263) makes rolling contact with the edge banding plate (70), and the second clamping head (264) makes rolling contact with the edge banding plate (70).

6. The metal plate edge laser welding fixing device according to claim 1, characterized in that, The positioning unit (26) further includes a limiter (40), which is installed on the workpiece stage (11). The limiter (40) includes a limit plate (41) and a moving mechanism (42). The moving mechanism (42) drives the limit plate (41) to be in a limited state and an open state. When in the limited state, the limit plate (41) is attached to the edge banding plate (70) and presses the edge banding plate (70) against one side of the metal plate (60) to be welded. When in the open state, the limit plate (41) moves away from the edge banding plate (70). The limiter (40) is located on one side of the guide rail (21). When the edge-binding plate fixing mechanism (20) moves along the guide rail (21) to the position of the limiter (40), the limiter (40) can be in an open state to avoid collision.

7. The metal plate edge laser welding fixing device according to claim 6, characterized in that, A sensor is provided on one side of the limiter (40). When the sensor detects the second bracket (24), the corresponding limiter (40) changes from the limiting state to the open state.

8. The metal plate edge laser welding fixing device according to claim 1, characterized in that, The metal plate fixing mechanism (10) also includes a slide rail (14), which is fixed on the workpiece table (11). The pressure plate lifting unit (13) is installed on the slide rail (14) so ​​that the pressure plate (12) can move as a whole along the slide rail (14).

9. The metal plate edge laser welding fixing device according to claim 1, characterized in that, Multiple buffer plates (121) are sequentially provided on one side of the pressure plate (12) for attaching to the metal plate (60).

10. The metal plate edge-sealing laser welding fixing device according to claim 1, characterized in that, The elastic unit (22) includes a main thrust cylinder (221) and a guide support rod (222). The cylinder seat and cylinder rod of the main thrust cylinder (221) are respectively mounted on the first bracket (23) and the second bracket (24). The guide support rod (222) passes through the first bracket (23) and is mounted on the second bracket (24), or passes through the second bracket (24) and is mounted on the first bracket (23).

11. The metal plate edge laser welding fixing device according to claim 10, characterized in that, At least three guide support rods (222) are arranged around the main thrust cylinder (221).

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