A laser welding machine upper supporting wheel device and a laser welding machine

Abstract

The application relates to a laser welding machine upper supporting wheel device and a laser welding machine, which comprises a welding trolley and an upper supporting wheel assembly. The welding trolley is provided with a welding head mounting position. The upper supporting wheel assembly comprises a first mounting seat, a driving mechanism, a second mounting seat, two first elastic members and a wheel rim. The first mounting seat is movably mounted on the side of the welding head mounting position along the vertical direction. The driving mechanism is connected with the first mounting seat. The second mounting seat is located below the first mounting seat and is rotatably mounted on the first mounting seat along the axis of the movement direction of the welding trolley. The two first elastic members are located between the first mounting seat and the second mounting seat. The wheel rim is rotatably mounted on the second mounting seat along the axis thereof. Through the rotation of the second mounting seat and the elastic cooperation of the two first elastic members, the wheel rim can automatically adjust the pressing angle according to the plate type of the strip steel, the strip steel can be completely pressed, and the phenomenon of high-low layering is avoided.

Description

Technical Field

[0001] This invention relates to the field of laser welding machine technology, and in particular to a support wheel device for a laser welding machine and a laser welding machine. Background Technology

[0002] The upper support wheel device is mainly used in online laser welding machines for strip steel in the metallurgical industry. This device plays a very important role in the laser welding machine. Its main function is to press and flatten the head and tail of the strip steel to be welded, avoid uneven layers of the strip steel to be welded, and facilitate laser welding.

[0003] Patent CN 215200173 U describes an upper support wheel device for an online laser welding machine for strip steel, comprising an upper side wall plate of a C-shaped carriage, and further comprising a wheel rim lifting mechanism and a laser welding head lifting mechanism; the wheel rim lifting mechanism comprises a driving element, a guiding mechanism, a connecting plate, an L-shaped connecting seat, a U-shaped seat, a rotating adjustment plate, and a wheel seat connected in sequence; the upper end surface of the upper side wall plate of the C-shaped carriage is provided with a mounting plate, and the lower end surface is provided with a guiding seat; the guiding mechanism is located inside the guiding seat and can move up and down along the guiding seat, one end of which is connected to the driving element, and the other end of which is connected to the connecting plate.

[0004] When the aforementioned existing technology presses against ultra-thin plates, there is a certain degree of misalignment in the vertical direction of the steel strip head and tail, and the amount of misalignment is too large relative to the thickness of the ultra-thin plate, or even exceeds the thickness of the ultra-thin plate. This causes the base materials of the inlet and outlet steel strips to be unable to fuse together during laser welding, resulting in weld defects. Summary of the Invention

[0005] In view of this, it is necessary to provide a support wheel device for a laser welding machine and a laser welding machine to solve the technical problem in the prior art where, when pressing against ultra-thin plates, there is a certain degree of misalignment in the height direction of the head and tail of the steel strip, and the misalignment is too large relative to the thickness of the ultra-thin plate, or even exceeds the thickness of the ultra-thin plate, causing the base materials of the inlet and outlet steel strips to not fuse together at all during laser welding, resulting in weld defects.

[0006] This invention provides a support wheel device for a laser welding machine, the support wheel device for the laser welding machine comprising:

[0007] A welding carriage having a welding head mounting position for mounting a laser welding head; and...

[0008] The upper support wheel assembly includes a first mounting base, a drive mechanism, a second mounting base, two first elastic elements, and a wheel rim. The first mounting base is movably mounted vertically beside the welding head mounting position, allowing it to have a vertically downward moving working state and a vertically upward moving avoidance state. The drive mechanism is connected to the first mounting base and is used to drive the first mounting base to switch back and forth between the working state and the avoidance state. The second mounting base is located below the first mounting base and is rotatably mounted on the first mounting base along the axis of movement of the welding trolley. The two first elastic elements are located between the first mounting base and the second mounting base, and are respectively disposed on opposite sides of the rotation axis of the second mounting base. The wheel rim is rotatably mounted on the second mounting base along its own axis, so that when the first mounting base is in the working state, the wheel rim is used to roll and press against the strip steel.

[0009] Optionally, the upper support wheel assembly further includes a third mounting base, which is elastically and telescopically mounted on the lower side of the first mounting base in the vertical direction. The second mounting base is rotatably mounted on the third mounting base along the axis of the welding trolley's movement direction, so that the wheel rim is elastically and telescopically arranged in the vertical direction to elastically press against the strip steel.

[0010] Optionally, the third mounting base includes two base bodies, which are arranged at intervals along the direction of movement of the welding trolley, and each base body is provided with a mounting hole in the vertical direction;

[0011] The upper support wheel assembly further includes two sliding columns and a second elastic element. The two sliding columns are installed on the lower side of the first mounting base. The lower end of each sliding column is provided with a stop. The two sliding columns correspond one-to-one with the two mounting holes. Each seat body is slidably installed on the sliding column, and the seat body is restricted from vertical downward movement by the stop. The second mounting base is rotatably installed between the two seat bodies. The second elastic element is located between the first mounting base and the second mounting base. The second elastic element is used to drive the second mounting base to move vertically downward.

[0012] Optionally, each of the seats has a rotating part on the side facing the other seat, and the second mounting seat has a rotating engagement part corresponding to the two rotating parts. The rotating parts and the rotating engagement parts are rotatably engaged so that the second mounting seat is rotatably mounted between the two seats.

[0013] In this configuration, one of the rotating part and the rotating mating part is a rotating shaft hole, and the other is a rotating shaft.

[0014] Optionally, the first mounting base has a first threaded hole on the side away from the welding head mounting position;

[0015] The upper support wheel assembly further includes a first adjustment component, which includes a mounting block, a first adjustment screw, and a second adjustment screw. The mounting block is installed on the side of the second mounting seat away from the welding head mounting position. The mounting block extends vertically upward, such that the mounting block is spaced apart from the first mounting seat. The mounting block has an elongated hole and a second threaded hole. The elongated hole extends vertically. The first adjustment screw passes through the elongated hole and is threadedly engaged with the first mounting seat. The second adjustment screw is threadedly engaged with the mounting block, and its end abuts against the first mounting seat.

[0016] Optionally, the first adjustment component further includes a wear block, which is disposed on the side of the first mounting base away from the welding head mounting position, and the second adjustment screw abuts against one side of the wear block.

[0017] Optionally, the first mounting base includes a connecting base and a cantilever beam. The connecting base is connected to the drive mechanism, and the cantilever beam is rotatably mounted on the lower side of the connecting base along a vertical axis. The second mounting base is located on the lower side of the cantilever beam.

[0018] Optionally, two upper support wheel assemblies are provided, and the two upper support wheel assemblies are located on opposite sides of the welding head mounting position.

[0019] Optionally, both wheel rims are inclined from top to bottom toward the welding head mounting position.

[0020] In addition, the present invention also provides a laser welding machine, which includes the upper support wheel device of the laser welding machine as described in any one of the above technical solutions.

[0021] Compared with the prior art, the laser welding machine support wheel device provided by this invention allows the welding carriage to travel along the splice seam of two steel strips. The welding head mounting position is directly opposite the splice seam and is used to mount the laser welding head. A first mounting seat is movably mounted on the side of the welding head mounting position in a vertical direction. It has a working state that can drive the wheel ring to move vertically downward to press against the steel strip, and a avoidance state that drives the wheel ring to move vertically upward away from the steel strip. A second mounting seat is rotatably mounted on the first mounting seat along the axis of the welding carriage's movement direction, while the wheel ring is rotatably mounted on the second mounting seat. On the side facing the welding head mounting position, the two ends of the first elastic element abut against the first mounting base and the second mounting base respectively. The two first elastic elements are respectively located on opposite sides of the rotation axis of the second mounting base, so that while the second mounting base can rotate, it is also subjected to the elastic force of the two first elastic elements. With this arrangement, through the rotation setting of the second mounting base and the elastic cooperation of the two first elastic elements, the wheel ring can adapt to the shape of the strip and automatically adjust the clamping angle to achieve the purpose of fully clamping the strip. This allows the ultra-thin strip to be fully clamped, avoiding the phenomenon of high and low misalignment.

[0022] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a front view schematic diagram of an embodiment of the support wheel device for a laser welding machine provided by the present invention;

[0025] Figure 2 for Figure 1 Left view of the support wheel device on the laser welding machine;

[0026] Figure 3 for Figure 2 A partial schematic diagram of the support wheel device on a laser welding machine;

[0027] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0028] Figure 5 for Figure 1 Exploded view of the upper and middle support wheel assembly;

[0029] Figure 6 for Figure 5A three-dimensional schematic diagram of the upper and middle support wheel assembly;

[0030] Figure 7 for Figure 5 Front view of the upper and middle support wheel assembly;

[0031] Figure 8 for Figure 5 A top view of the upper and middle support wheel assembly.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Welding carriage, 2-First mounting seat, 21-Connecting seat, 211-Mounting groove, 22-Cantilever beam, 3-Drive mechanism, 31-Drive cylinder, 32-Splined shaft, 33-Splined shaft seat, 331-Mounting boss, 34-Guide sleeve, 4-Second mounting seat, 41-Rotating shaft, 42-First elastic element, 421-Step screw, 422-Washer, 423-Disc spring, 5-Third mounting seat, 51-Seat body, 511-Mounting hole, 512-Rotating shaft hole, 61-Sliding column, 611-Stop part, 62-Second elastic element, 7-First adjusting component, 71-Mounting block, 72-First adjusting screw, 73-Second adjusting screw, 74-Wearing block, 8-Second adjusting component, 81-Connecting block, 82-Third adjusting screw, 83-Fourth adjusting screw, 9-Wheel rim, 200-Laser welding head. Detailed Implementation

[0034] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0035] This invention provides a laser welding machine for welding strip steel. The laser welding machine includes a laser welding head 200 and an upper support wheel device as described in any of the above-mentioned embodiments. The laser welding head 200 is used to weld two strip steels, that is, to weld the head of one strip steel to the tail of another strip steel. The upper support wheel device is located beside the laser welding head 200 and is used to cooperate with the lower support wheel device to press the strip steel together, making the two strip steels on the same plane, facilitating welding by the laser welding head 200 and improving the welding effect.

[0036] Please see Figures 1 to 3The upper support wheel device of this laser welding machine includes a welding carriage 1 and an upper support wheel assembly. The welding carriage 1 has a welding head mounting position for mounting a laser welding head 200. The upper support wheel assembly includes a first mounting base 2, a drive mechanism 3, a second mounting base 4, two first elastic elements 42, and a wheel rim 9. The first mounting base 2 is movably mounted vertically beside the welding head mounting position, allowing it to move vertically downwards in a working state and upwards in a clearance state. The drive mechanism 3 is connected to the first mounting base 2 and drives the first mounting base 2 to move vertically downwards in a clearance state. The device switches back and forth between the working state and the avoidance state. The second mounting base 4 is located below the first mounting base 2. The second mounting base 4 is rotatably mounted on the first mounting base 2 along the axis of movement of the welding trolley 1. The two first elastic elements 42 are located between the first mounting base 2 and the second mounting base 4, and the two first elastic elements 42 are respectively disposed on opposite sides of the rotation axis of the second mounting base 4. The wheel rim 9 is rotatably mounted on the second mounting base 4 along its own axis so that when the first mounting base 2 is in the working state, the wheel rim 9 is used to roll and press against the strip steel.

[0037] It is understood that this device is used for welding strip steel, that is, after two strip steels are spliced, the splice seam of the two strip steels is welded. Therefore, the travel path of the welding carriage 1 is the extension direction of the splice seam. The welding head mounting position is set directly opposite the splice seam, and the laser welding head 200 is installed at the welding head mounting position. Thus, when the welding carriage 1 moves, it drives the laser welding head 200 to weld the splice seam. The upper support wheel assembly is used to cooperate with the lower support wheel assembly to press against the strip steel and prevent the strip steel from deviating or misaligning.

[0038] The laser welding machine support wheel device provided by this invention allows the welding carriage 1 to travel along the splice seam of two steel strips. The welding head mounting position is directly opposite the splice seam and is used to mount the laser welding head 200. A first mounting seat 2 is movably mounted on the side of the welding head mounting position in a vertical direction. It has a working state that can drive the wheel rim 9 to move vertically downward to press against the steel strip, and a avoidance state that drives the wheel rim 9 to move vertically upward away from the steel strip. A second mounting seat 4 is rotatably mounted on the first mounting seat 2 along the axis of movement of the welding carriage 1, and the wheel rim 9 is rotatably mounted on the side of the second mounting seat 4 facing the welding head mounting position. There is a gap between the first mounting base 2 and the second mounting base 4. The first elastic element 42 is located in the gap and its two ends abut against the first mounting base 2 and the second mounting base 4 respectively. The two first elastic elements 42 are respectively located on opposite sides of the rotation axis of the second mounting base 4, so that the second mounting base 4 can rotate while being subjected to the elastic force of the two first elastic elements 42. With this arrangement, through the rotation of the second mounting base 4 and the elastic cooperation of the two first elastic elements 42, the wheel rim 9 can automatically adjust the clamping angle to adapt to the shape of the strip steel, so as to achieve the purpose of fully clamping the strip steel, thereby ensuring that the ultra-thin strip steel can be fully clamped and avoiding the phenomenon of high and low misalignment.

[0039] Further, please see Figures 3 to 5 The specific form of the first elastic element 42 is not limited here. In this embodiment, the second mounting base 4 has two threaded holes on its upper side, and the two threaded holes are located on opposite sides of the rotation axis of the second mounting base 4. The two threaded holes correspond one-to-one with the two first elastic elements 42. The first elastic element 42 includes a stepped screw 421, two washers 422 and a plurality of disc springs 423. The plurality of disc springs 423 are stacked vertically. The two washers 422 are located at the upper and lower ends of the plurality of disc springs 423 respectively. The washer 422 located at the upper end of the plurality of disc springs 423 abuts against the first mounting base 2. The stepped screw 421 passes through the washer 422, the plurality of disc springs 423 and the other washer 422 in sequence and is threadedly connected to the second mounting base 4. The plurality of disc springs 423 elastically abut against the first mounting base 2 and the second mounting base 4 through the two washers 422.

[0040] Further, please see Figures 5 to 7When welding strip steel, the clamping force acting on the strip steel is the vertically downward output force of the drive mechanism 3. For ultra-thin strip steel, the output force of the drive mechanism 3 acting directly on the strip steel will cause damage. Therefore, in this embodiment, the upper support wheel assembly also includes a third mounting seat 5. The third mounting seat 5 is elastically and telescopically mounted on the lower side of the first mounting seat 2 in the vertical direction. The second mounting seat 4 is rotatably mounted on the third mounting seat 5 along the axis of the welding carriage 1, so that the wheel rim 9 is elastically telescopically set in the vertical direction to elastically press against the strip steel. The second mounting seat 4 is rotatably mounted on the third mounting seat 5, so the wheel rim 9 can be elastically telescopically set in the vertical direction. At this time, the clamping force acting on the strip steel is the sum of the weight of the second mounting seat 4, the third mounting seat 5, the wheel rim 9 and their related components and the elastic force of the third mounting seat 5's elastic telescopic movement. The clamping force at this time is much smaller than the clamping force directly driven by the drive mechanism 3. In this way, the strip steel can be clamped without causing damage to the strip steel.

[0041] Further, please see Figure 5The specific structure of the third mounting base 5 is not limited. In this embodiment, the third mounting base 5 includes two base bodies 51, which are arranged at intervals along the movement direction of the welding trolley 1. Each base body 51 has a mounting hole 511 in the vertical direction. The upper support wheel assembly also includes two sliding columns 61 and a second elastic member 62. The two sliding columns 61 are installed on the lower side of the first mounting base 2. The lower end of the sliding column 61 is provided with a stop part 611. The two sliding columns 61 correspond one-to-one with the two mounting holes 511. Each base body 51 is slidably installed on the sliding column 61, and the base body 51 is restricted to move vertically downward by the stop part 611. The second mounting base 4 is rotatably installed between the two base bodies 51. The second elastic member 62 is located between the first mounting base 2 and the second mounting base 4. The second elastic member 62 is used to drive the second mounting base 4 to move vertically downward. Specifically, the lower end of the sliding column 61 is provided with a stop 611, and the upper end is installed on the first mounting seat 2. Therefore, the seat body 51 can slide vertically between the stop 611 and the first mounting seat 2, thereby driving the second mounting seat 4 and the wheel rim 9 to have a vertical stroke. Due to the presence of the second elastic element 62 and the weight of the seat body 51, the second mounting seat 4 and the wheel rim 9, in the initial state, the seat body 51 is located at the lower end of the sliding column 61 and abuts against the stop 611. When the wheel rim 9 presses against the strip, the wheel rim 9 elastically compresses the second elastic element 62 vertically upward under the reaction force of the strip. At this time, the clamping force is the sum of the weight of the second mounting seat 4, the third mounting seat 5, the wheel rim 9 and its related components and the elastic force of the second elastic element 62, which is much smaller than the clamping force directly driven by the drive mechanism 3. This avoids damage to the strip.

[0042] Further, please see Figures 1 to 2 The specific driving mechanism 3 is not limited. In this embodiment, the driving mechanism 3 is a driving cylinder 31. The extension stroke of the push rod of the driving cylinder 31 can be adjusted. Thus, by adjusting the push rod of the driving cylinder 31, the clamping force is provided by the sum of the gravity of the second mounting seat 4, the third mounting seat 5, the wheel rim 9 and their related components and the elastic force of the second elastic member 62.

[0043] Furthermore, when the seat 51 is in its initial state, the distance between the seat 51 and the first mounting seat 2 is h1. At the initial stage of welding, depending on the thickness of the strip to be welded, the stroke of the drive mechanism 3 is adjusted so that the wheel rim 9 presses against the wheel rim of the lower support wheel and the wheel rim 9 is lifted upward. At this time, the distance between the seat 51 and the first mounting seat 2 is h2, and h1 is greater than or equal to h2. It should be noted that the specific values ​​of h1 and h2 are not limited here, as long as they can be used for thinner strips.

[0044] For ease of explanation, in this embodiment, h1 = 5mm and h2 = 0.3mm. That is, when the seat 51 is in the initial state, the distance between the seat 51 and the first mounting seat 2 is 5mm. At the beginning of welding, the wheel rim 9 presses against the wheel rim of the lower support wheel. At this time, the distance between the seat 51 and the first mounting seat 2 is 0.3mm. As the welding carriage moves, the wheel rim 9 gradually comes into contact with the strip steel. At this time, the wheel rim 9 will be further lifted by the strip steel. When welding strip steel with a thickness of less than 0.3mm, the wheel rim 9 contacts the strip steel as the welding carriage 1 moves. At this time, the wheel rim 9 is pushed upward by the strip steel, compressing the second elastic element 62. The distance between the seat 51 and the first mounting seat 2 is squeezed even smaller. At this time, the pressure of the wheel rim 9 on the strip steel is not the output force of the drive mechanism 3, but the sum of the weight of the wheel rim 9, the second mounting seat 4 and the third mounting seat 5 and the elastic force of the second elastic element 62. Under the action of the first elastic element 42, the second mounting seat 4 automatically adjusts the clamping angle to adapt to the shape of the strip steel, so as to achieve the purpose of completely clamping the strip steel. When welding strip steel thicker than 0.3mm, the wheel rim 9 contacts the strip steel as the welding carriage moves. At this time, the wheel rim 9 is pushed upwards by the strip steel, and the distance between the seat 51 and the first mounting seat 2 is squeezed and eliminated. The upper surface of the second mounting seat 4 abuts against the lower surface of the first mounting seat 2, and the second mounting seat 4 loses its rotation function. At this time, the force exerted by the wheel rim 9 on the strip steel is the output force of the drive mechanism 3. That is, when welding strip steel thicker than 0.3mm, it is the output force of the drive mechanism 3 that presses the strip steel. This configuration allows the entire device to weld both thicker and thinner strip steel, expanding its application range.

[0045] Further, please see Figure 5 The number of the second elastic element 62 is not limited here. In this embodiment, there are two second elastic elements 62, and the two elastic elements are arranged at intervals along the axis of the second mounting base 4 rotating shaft 41.

[0046] Furthermore, the specific form of the second elastic element 62 is not limited. In this embodiment, the second elastic element 62 is a spring.

[0047] Furthermore, each of the base bodies 51 has a rotating portion on one side facing the other base body 51, and the second mounting seat 4 has a rotating engagement portion corresponding to the two rotating portions. The rotating portions and the rotating engagement portions are rotatably engaged, so that the second mounting seat 4 is rotatably mounted between the two base bodies 51. One of the rotating portions and the rotating engagement portion is a pivot hole 512, and the other is a pivot 41. In this embodiment, the pivot hole 512 is located in the base body 51, and the pivot 41 is located in the second connecting seat 21.

[0048] Further, please see Figures 6 to 8 To adjust the rotation range of the second mounting base 4, the first mounting base 2 has a first threaded hole on the side away from the welding head mounting position. The upper support wheel assembly also includes a first adjustment component 7, which includes a mounting block 71, a first adjusting screw 72, and a second adjusting screw 73. The mounting block 71 is mounted on the side of the second mounting base 4 away from the welding head mounting position. The mounting block 71 extends vertically upward, so that the mounting block 71 is spaced apart from the first mounting base 2. The mounting block 71 has an elongated hole and a second threaded hole. The elongated hole extends vertically. The first adjusting screw 72 passes through the elongated hole and is threadedly engaged with the first mounting base 2. The second adjusting screw 73 is threadedly engaged with the mounting block 71, and its end abuts against the first mounting base 2. The first adjusting screw 72 passes through the elongated hole and is threaded into the first mounting base 2. The end of the first adjusting screw 72 can restrict the mounting block 71 from moving away from the first mounting base 2, that is, restrict the second mounting base 4 from rotating towards the welding head mounting position. The second adjusting screw 73 abuts against the first mounting base 2 and can restrict the mounting block 71 from moving towards the first mounting base 2, that is, restrict the second mounting base 4 from rotating away from the welding head mounting position. By cooperating with the first adjusting screw 72 and the second adjusting screw 73, the rotation range of the second mounting base 4 can be adjusted.

[0049] Furthermore, when the second mounting base 4 rotates, the second adjusting screw 73 will also frequently contact the first mounting base 2. In order to avoid wear on the first mounting base 2, the first adjusting assembly 7 also includes a wear block 74. The wear block 74 is located on the side of the first mounting base 2 away from the welding head mounting position, and the second adjusting screw 73 abuts against one side of the wear block 74.

[0050] Further, please see Figure 5The specific form of the first mounting base 2 is not limited. In this embodiment, the upper support wheel assembly is close to the laser welding head 200. To facilitate maintenance of the laser welding head 200, the first mounting base 2 includes a connecting base 21 and a cantilever beam 22. The connecting base 21 is connected to the drive mechanism 3, and the cantilever beam 22 is rotatably mounted on the lower side of the connecting base 21 along the vertical axis. The second mounting base 4 is located on the lower side of the cantilever beam 22. In specific use, when maintenance of the laser welding head 200 is required, the cantilever beam 22 is rotated to move away from the welding head mounting position, thereby causing the second mounting base 4, the third mounting base 5, and the wheel rim 9 to move away from the welding head mounting position, creating space for maintenance of the laser welding head 200. After maintenance is completed, the cantilever beam 22 is rotated back to its initial position and locked.

[0051] Furthermore, the length of the cantilever beam 22 ranges from 210mm to 230mm, which greatly enhances the torsional resistance of the entire device's mechanical structure and increases the service life of the mechanical structure.

[0052] Further, please see Figures 1 to 2 The upper support wheel assembly further includes a splined shaft 32, a guide sleeve 34, and a splined shaft seat 33. The guide sleeve 34 is fixedly installed on the welding carriage 1 and extends vertically. The splined shaft 32 is slidably installed inside the guide sleeve 34, with both ends extending outside the guide sleeve 34. The upper end of the splined shaft 32 is connected to the push rod of the drive cylinder 31, and the lower end of the splined shaft is connected to the splined shaft seat 33. The splined shaft seat 33 is connected to the connecting seat 21. The splined shaft 32 and the guide sleeve 34 work together to provide guidance and restrict the splined shaft 32 from rotating axially.

[0053] Further, please see Figure 5 The upper side of the connecting seat 21 is provided with a mounting groove 211, which extends along the first direction axis. Both ends of the mounting groove 211 extend to opposite sides of the connecting seat 21, forming openings. The lower side of the splined shaft seat 33 is provided with a mounting boss 331, which is adapted to the mounting groove 211. The mounting boss 331 is movably disposed within the mounting groove 211 along the first direction, allowing the position of the connecting seat 21 in the first direction to be adjustable. This configuration allows adjustment of the position of the wheel rim 9 in the first direction, enabling the wheel rim 9 to be as close as possible to the edge of the strip steel for better pressure. The first direction is perpendicular to the movement direction of the welding carriage 1.

[0054] Specifically, the splined shaft seat 33 has multiple oblong holes in the vertical direction, and the upper side of the connecting seat 21 has threaded holes corresponding to the multiple oblong holes. The upper support wheel assembly also includes multiple locking screws, each of which corresponds to one of the multiple oblong holes. The locking screws pass through the oblong holes and are threaded into the connecting seat 21 so that after the connecting seat 21 is adjusted to a set position, the locking screws are threaded into the connecting seat 21 to lock the connecting seat 21.

[0055] Specifically, please see Figures 5 to 6 The splined shaft seat 33 has a threaded hole on one side along the first direction. The upper support wheel assembly also includes a second adjustment assembly 8, which includes a connecting block 81, a third adjusting screw 82, and a fourth adjusting screw 83. The connecting block 81 is located on one side of the connecting seat 21 along the first direction and extends upward. The connecting block 81 is spaced apart from the splined shaft seat 33. The connecting block 81 has a through hole and a threaded hole. The third adjusting screw 82 passes through the through hole and is threadedly engaged with the splined shaft seat 33. The fourth adjusting screw 83 is threadedly engaged with the connecting block 81, and the end of the fourth screw abuts against the splined shaft seat 33. Through the cooperation of the third adjusting screw 82 and the fourth adjusting screw 83, the connecting seat 21 can be adjusted along the first direction.

[0056] Further, please see Figure 2 To effectively compress the two strips, two upper support wheel assemblies are provided, located on opposite sides of the welding head mounting position. This arrangement allows for simultaneous compression of both strips, improving welding quality.

[0057] Furthermore, in order to ensure that the wheel rim 9 is as close as possible to the edge of the strip while avoiding interference with the laser welding head 200, both wheel rims 9 are inclined towards the welding head mounting position from top to bottom.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A laser welder support wheel apparatus, characterized by, It comprises: A welding trolley having a welding head mounting position for mounting a laser welding head; and An upper supporting wheel assembly comprising a first mounting base, a driving mechanism, a second mounting base, two first elastic members and a wheel rim, the first mounting base is movably mounted beside the welding head mounting position in a vertical direction to have a working state of moving vertically downward and an avoiding state of moving vertically upward, the driving mechanism is connected with the first mounting base for driving the first mounting base to switch back and forth between the working state and the avoiding state, the second mounting base is located below the first mounting base and is rotatably mounted on the first mounting base along an axis of the welding trolley moving direction, the two first elastic members are located between the first mounting base and the second mounting base and are separately arranged on two sides of the axis of the second mounting base rotating, and the wheel rim is rotatably mounted on the second mounting base along its own axis to roll against the strip steel when the first mounting base is in the working state.

2. The laser welder support wheel apparatus of claim 1, wherein, The upper supporting wheel assembly further comprises a third mounting base which is elastically mounted on the lower side of the first mounting base in a vertical direction, wherein the second mounting base is rotatably mounted on the third mounting base along the axis of the welding trolley moving direction, so that the wheel rim is elastically arranged in a vertical direction for elastically pressing against the strip steel.

3. The laser welder support wheel apparatus of claim 2, wherein, The third mounting base comprises two seat bodies which are arranged at intervals along the moving direction of the welding trolley, and each seat body is provided with a mounting hole in a vertical direction; The upper supporting wheel assembly further comprises two slide columns and a second elastic member, the two slide columns are mounted on the lower side of the first mounting base, the lower end of the slide column is provided with a stop portion, the two slide columns correspond to the two mounting holes one by one, each seat body is slidably mounted on the slide column and is limited to move vertically downward by the stop portion, wherein the second mounting base is rotatably mounted between the two seat bodies, the second elastic member is located between the first mounting base and the second mounting base, and the second elastic member is used to drive the second mounting base to move vertically downward.

4. The laser welder support wheel apparatus of claim 3, wherein, Each seat body is provided with a rotating portion on the side facing the other seat body, the second mounting base is provided with a rotating matching portion corresponding to the two rotating portions, the rotating portion and the rotating matching portion are rotatably matched, so that the second mounting base is rotatably mounted between the two seat bodies. One of the rotating portion and the rotating matching portion is a rotating shaft hole, and the other is a rotating shaft.

5. The laser welder support wheel apparatus of claim 1, wherein, The side of the first mounting base away from the welding head mounting position is provided with a first threaded hole. The upper supporting wheel assembly further comprises a first adjusting assembly, which comprises a mounting block, a first adjusting screw and a second adjusting screw.

6. The laser welder support wheel apparatus of claim 5, wherein, The first adjusting assembly further comprises an abrasion block, which is arranged on the side of the first mounting seat away from the welding head mounting position and abuts against one side of the second adjusting screw.

7. The laser welder support wheel apparatus of claim 1, wherein, The first mounting seat comprises a connecting seat and a cantilever beam, the connecting seat is connected with the driving mechanism, and the cantilever beam is rotatably arranged on the lower side of the connecting seat along a vertical axis.

8. The laser welder support wheel apparatus of claim 1, wherein, The upper supporting wheel assembly is provided with two upper supporting wheel assemblies, which are arranged on the opposite sides of the welding head mounting position.

9. The laser welder support wheel apparatus of claim 8, wherein, The two wheel rims are both inclined towards the welding head mounting position from top to bottom.

10. A laser welding machine characterized by, The laser welding machine comprises the laser welding machine upper supporting wheel device according to any one of claims 1-9.

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