Tailored blank laser welding fixing tool

Abstract

The utility model belongs to the technical field of laser welding, and particularly relates to a tailored blank laser welding fixing tool which comprises a workbench, and a fixing frame is fixedly connected to the top of the workbench. A laser equipment main body is mounted on the fixing frame; an electric push rod drives a rectangular plate to move, the rectangular plate drives a second rack to move, the second rack drives a second gear to rotate, the second gear drives a rotating shaft and a first gear to rotate, and the first gear drives two first racks to move in opposite directions; the first rack drives the connecting block to move in the opposite direction, the connecting block drives the moving bases to move in the opposite direction, and therefore the tailored blank laser welding plates are driven to move towards the middle at the same time, the distance between the two moving bases is monitored through the distance sensor, and when the two tailored blank laser welding plates move to the proper positions, movement is stopped; the laser equipment main body is adopted for laser tailored blank welding operation, and the effect of fixing laser tailored blank welding plates of different sizes is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of laser welding technology, specifically a laser welding fixture. Background Technology

[0002] Laser-welded plates have been widely used in the automotive manufacturing industry. The use of laser-welded plates can not only reduce the manufacturing cost, logistics cost, vehicle weight, assembly tolerance, fuel consumption and scrap rate of the whole vehicle, but also simplify the assembly steps. The existing laser welding technology generally uses fixed tooling to fix the laser-welded plates.

[0003] A Chinese patent with publication number CN114952007B discloses a laser-MAG composite welding method for welding stainless steel composite plates. The method includes a base with a groove in the center of its upper surface. Stainless steel composite plates are placed on the upper surface of the base above the groove. The end faces of the stainless steel composite plates have vertical corner edges corresponding to the edges of the groove. Pressure plates are spaced on the upper part of the stainless steel composite plates and secured with screws. The base has a first air inlet and a second air inlet at its end, and an air outlet is located on the inner side of the groove. The method involves preparing the stainless steel composite plates to be welded; using a laser cleaning machine to remove rust and oil from the welding area of ​​each stainless steel composite plate; preparing a fixture; installing two stainless steel composite plates onto the fixture and fixing them; and then performing laser welding.

[0004] In the above technology, the tooling fixture is a fixed structure. One tooling fixture can only fix one size of stainless steel composite plate. When the size and shape of the stainless steel composite plate change, the tooling fixture cannot be used for other sizes of stainless steel composite plates and cannot fix stainless steel composite plates of different sizes.

[0005] Therefore, a laser welding fixture is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve the problem that fixed fixtures cannot fix stainless steel composite plates of different sizes, a laser welding fixing fixture is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A laser welding fixture of this utility model includes a worktable, with a fixed frame fixedly connected to the top of the worktable; a laser equipment body is mounted on the fixed frame, and a fixed seat is fixedly connected to the top of the worktable, the fixed seat cooperating with the laser equipment body; a limiting mechanism is provided on the worktable, the limiting mechanism including two movable seats; four fixed plates are fixedly connected to the top of the worktable, and a crossbar is fixedly connected between two fixed plates on the same side; both ends of the movable seats slide on the crossbar; a first gear is rotatably connected to the bottom of the worktable via a rotating shaft; a first rack is provided on both sides of the first gear, the two first racks are symmetrical about the center of the first gear, and both first racks mesh with the first gear; a connecting block is fixedly connected to one end of the top of each first rack, the top of each connecting block is fixedly connected to the bottom of the movable seat; two sliding openings are opened on the worktable, and the connecting blocks slide within the corresponding sliding openings; a distance sensor is fixedly connected to the side wall of one of the movable seats.

[0008] Preferably, a second gear is provided below the first gear, and the second gear is fixedly connected to the rotating shaft; an L-shaped plate is fixedly connected to the bottom of the worktable; an electric push rod is fixedly connected to the top of the L-shaped plate, and a rectangular plate is fixedly connected to the output end of the electric push rod; a second rack is fixedly connected to the side wall of the rectangular plate, and the second rack meshes with the second gear; the bottom of the second rack is slidably connected to the top of the L-shaped plate.

[0009] Preferably, each of the movable seats has two fixed blocks fixedly connected to its top, and each of the two fixed blocks is rotatably connected to a bidirectional ball screw via a bearing. Each bidirectional ball screw has two movable blocks threaded onto it. One end of each bidirectional ball screw is fixedly connected to a rotating block. Each movable block has a fixing mechanism fixedly connected to its side wall.

[0010] Preferably, the fixing mechanism includes a top plate and a bottom plate, the bottom plate being fixedly connected to the side wall of the movable block near the fixing frame; the top plate being slidably connected to the movable block, and rubber pads being fixedly connected to adjacent side walls of the top plate and the bottom plate; the movable block being rotatably connected to a threaded rod via a bearing, and the top plate being threadedly connected to the threaded rod; a handle being fixedly connected to the top of the threaded rod.

[0011] Preferably, two guide rods are fixed between each of the two fixed blocks, and the movable blocks slide on the guide rods.

[0012] Preferably, the bottom of the workbench is fixedly connected to four side plates, and a slide rod is fixedly connected between two side plates on the same side; two connecting plates are fixedly connected to the side wall of the first rack, and the connecting plates slide on the slide rod.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a laser welding fixing fixture, which is equipped with a first gear, a second gear, a first rack, and a second rack. An electric push rod is activated, which drives a rectangular plate to move. The rectangular plate then drives the second rack, which in turn drives the second gear to rotate. The second gear drives the rotating shaft and the first gear to rotate. The first gear, in turn, drives the two first racks to move in opposite directions. The first racks then drive the connecting block to move in opposite directions, and the connecting block drives the moving seats in opposite directions. This causes the laser welding plates to move simultaneously towards the center. A distance sensor monitors the distance between the two moving seats, and the distance between adjacent sidewalls of the laser welding plates is calculated in real time based on the size of the laser welding plates. Once the two laser welding plates have moved to the appropriate positions, the movement stops, and the main body of the laser equipment performs the laser welding operation, thus fixing laser welding plates of different sizes.

[0015] This utility model provides a laser welding fixing fixture. By setting a bidirectional ball screw, the distance between the fixing mechanisms needs to be adjusted according to the size of the laser welding plates during the fixing process, as the laser welding plates have different sizes, to avoid the laser welding plates being unbalanced due to being too far or too close. During adjustment, the rotating block drives the bidirectional ball screw to rotate. Since there is a ball nut seat at the connection between the bidirectional ball screw and the moving block, the radial movement of the moving block is ensured by the ball nut seat. The bidirectional ball screw drives the moving block to move in the opposite direction, and the moving block drives the fixing mechanism to move in the opposite direction, thereby further fixing the laser welding plate. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is the first perspective view of the present invention;

[0018] Figure 2 This is the second perspective view of the present invention;

[0019] Figure 3 This is a perspective view of the first gear and the second gear in this utility model;

[0020] Figure 4 This is a perspective view of the first gear and the first rack in this utility model;

[0021] Figure 5 This is a perspective view of the movable block in this utility model;

[0022] Figure 6This is a perspective view of the top plate and bottom plate in this utility model;

[0023] Legend:

[0024] 1. Workbench; 11. Fixed base; 12. Sliding port; 2. Fixed frame; 21. Laser equipment body; 3. Moving base; 31. Fixed plate; 32. Crossbar; 33. First rack; 331. Side plate; 332. Slide rod; 333. Connecting plate; 34. First gear; 35. Second gear; 36. Electric push rod; 37. Connecting block; 38. Second rack; 381. L-shaped plate; 382. Rectangular plate; 4. Fixed block; 41. Moving block; 42. Bidirectional ball screw; 43. Guide rod; 44. Rotating block; 5. Top plate; 51. Bottom plate; 52. Threaded rod; 53. Handle; 6. Distance sensor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figures 1-6 This utility model provides a laser welding fixture, including a worktable 1, with a fixing frame 2 fixedly connected to the top of the worktable 1; a laser equipment body 21 is mounted on the fixing frame 2, and a fixing seat 11 is fixedly connected to the top of the worktable 1, the fixing seat 11 cooperating with the laser equipment body 21; a limiting mechanism is provided on the worktable 1, the limiting mechanism including two movable seats 3, and four fixing plates 31 are fixedly connected to the top of the worktable 1, with a crossbar 32 fixed between two fixing plates 31 on the same side, and both ends of the movable seats 3 sliding on the crossbar 32; the fixture... The bottom of the worktable 1 is rotatably connected to a first gear 34 via a rotating shaft; both sides of the first gear 34 are provided with first racks 33, the two first racks 33 are symmetrical about the center of the first gear 34, and both first racks 33 mesh with the first gear 34; one end of the top of each first rack 33 is fixedly connected to a connecting block 37, the top of each connecting block 37 is fixedly connected to the bottom of the movable seat 3, the worktable 1 has two sliding openings 12, the connecting blocks 37 slide in the corresponding sliding openings 12, and a distance sensor 6 is fixedly connected to the side wall of one of the movable seats 3.

[0028] During operation, to address the issue that fixed fixtures cannot secure laser-welded panels of different sizes, the laser-welded panels are fixed to the moving block 41 via a fixing mechanism. Then, the first gear 34 is driven, which in turn drives two first racks 33 to move in opposite directions. These racks 33, in turn, drive the connecting block 37 to move in opposite directions, which in turn drives the moving seat 3 to move in opposite directions. This causes the laser-welded panels to move simultaneously towards the center. A distance sensor 6 monitors the distance between the two moving seats 3, and the distance between adjacent sidewalls of the laser-welded panels is calculated in real-time based on their dimensions. Once the two laser-welded panels have reached the appropriate positions, the movement stops, and the laser equipment body 21 performs the laser welding operation, thus securing laser-welded panels of different sizes.

[0029] Furthermore, such as Figure 2 and Figure 3 As shown, a second gear 35 is provided below the first gear 34, and the second gear 35 is fixedly connected to the rotating shaft; an L-shaped plate 381 is fixedly connected to the bottom of the worktable 1; an electric push rod 36 is fixedly connected to the top of the L-shaped plate 381, and a rectangular plate 382 is fixedly connected to the output end of the electric push rod 36; a second rack 38 is fixedly connected to the side wall of the rectangular plate 382, ​​and the second rack 38 meshes with the second gear 35; the bottom of the second rack 38 is slidably connected to the top of the L-shaped plate 381.

[0030] During operation, when the first gear 34 needs to be driven to rotate, the electric push rod 36 is activated. The electric push rod 36 drives the rectangular plate 382 to move, which in turn drives the second rack 38 to move. The second rack 38 drives the second gear 35 to rotate, which in turn drives the rotating shaft and the first gear 34 to rotate, thus providing power for the rotation of the first gear 34. The electric push rod 36 is electrically connected to the distance sensor 6. By setting the distance between the two laser-welded plates, the distance sensor 6 transmits the signal to the computer program, which then controls the operation of the electric push rod 36.

[0031] Furthermore, such as Figure 1 and Figure 5 As shown, the top of each movable seat 3 is fixedly connected to two fixed blocks 4, and the two fixed blocks 4 are rotatably connected to each other by a bearing. Each of the two fixed blocks 42 is threadedly connected to two movable blocks 41. One end of each two fixed blocks 42 is fixedly connected to a rotating block 44. Each movable block 41 is fixedly connected to a fixing mechanism on its side wall.

[0032] During operation, due to the different sizes of the laser-welded panels, the distance between the fixing mechanisms needs to be adjusted according to the size of the laser-welded panels during the fixing process to avoid the laser-welded panels being unbalanced due to being too far or too close. During adjustment, the rotating block 44 is rotated, which drives the bidirectional ball screw 42 to rotate. Since there is a ball nut seat at the connection between the bidirectional ball screw 42 and the moving block 41, the radial movement of the moving block 41 is ensured by the ball nut seat. The bidirectional ball screw 42 drives the moving block 41 to move in the opposite direction, and the moving block 41 drives the fixing mechanism to move in the opposite direction, thereby further fixing the laser-welded panels.

[0033] Furthermore, such as Figure 5 and Figure 6 As shown, the fixing mechanism includes a top plate 5 and a bottom plate 51. The bottom plate 51 is fixedly connected to the side wall of the movable block 41 near the fixing frame 2. The top plate 5 is slidably connected to the movable block 41. Rubber pads are fixedly connected to the adjacent side walls of the top plate 5 and the bottom plate 51. The movable block 41 is rotatably connected to a threaded rod 52 through a bearing. The top plate 5 is threadedly connected to the threaded rod 52. A handle 53 is fixedly connected to the top of the threaded rod 52.

[0034] During operation, when fixing the laser welding plate, the laser welding plate needs to be placed between the top plate 5 and the bottom plate 51. By rotating the handle 53, the handle 53 drives the threaded rod 52 to rotate, the threaded rod 52 drives the top plate 5 to move downward, and the top plate 5 drives the rubber pad to move downward and contact the laser welding plate, thereby fixing the laser welding plate. The rubber pad protects the laser welding plate.

[0035] Furthermore, such as Figure 5 As shown, two guide rods 43 are fixed between the two fixed blocks 4, and the moving blocks 41 slide on the guide rods 43.

[0036] During operation, the movable block 41 slides on the guide rod 43, which limits the movable block 41 to the horizontal direction.

[0037] Furthermore, such as Figure 2 As shown, four side plates 331 are fixedly connected to the bottom of the workbench 1, and a slide rod 332 is fixedly connected between two side plates 331 on the same side; two connecting plates 333 are fixedly connected to the side wall of the first rack 33, and the connecting plates 333 slide on the slide rod 332.

[0038] During operation, the first rack 33 moves and drives the connecting plate 333 to move. The connecting plate 333 slides on the slide rod 332, which limits the connecting plate 333 to the horizontal direction.

[0039] Working principle: Due to the different sizes of laser-welded panels, the distance between the fixing mechanisms needs to be adjusted according to the size of the laser-welded panels during the fixing process to avoid the laser-welded panels being unbalanced due to being too far or too close. During adjustment, the rotating block 44 is rotated, which drives the bidirectional ball screw 42 to rotate. Since there is a ball nut seat at the connection between the bidirectional ball screw 42 and the moving block 41, the radial movement of the moving block 41 is ensured by the ball nut seat. The bidirectional ball screw 42 drives the moving block 41 to move in the opposite direction, and the moving block 41 drives the fixing mechanism to move in the opposite direction, thereby further fixing the laser-welded panels.

[0040] When fixing the laser welding plate, the laser welding plate needs to be placed between the top plate 5 and the bottom plate 51. By rotating the handle 53, the handle 53 drives the threaded rod 52 to rotate, the threaded rod 52 drives the top plate 5 to move downward, and the top plate 5 drives the rubber pad to move downward and contact the laser welding plate, thereby fixing the laser welding plate. The rubber pad protects the laser welding plate.

[0041] The electric push rod 36 is activated, which drives the rectangular plate 382 to move. The rectangular plate 382 drives the second rack 38 to move, which in turn drives the second gear 35 to rotate. The second gear 35 drives the rotating shaft and the first gear 34 to rotate, which in turn drives the two first racks 33 to move in opposite directions. The first racks 33 drive the connecting block 37 to move in opposite directions, which in turn drives the moving seat 3 to move in opposite directions. This causes the laser welding plate to move towards the center simultaneously. The distance sensor 6 monitors the distance between the two moving seats 3 and calculates the distance between adjacent sidewalls of the laser welding plate based on its size. Once the two laser welding plates have moved to the appropriate positions, the movement stops, and the laser equipment body 21 performs laser welding operations to fix laser welding plates of different sizes.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A laser welding fixture, comprising a worktable (1), wherein a fixing frame (2) is fixedly connected to the top of the worktable (1); a laser equipment body (21) is mounted on the fixing frame (2); a fixing seat (11) is fixedly connected to the top of the worktable (1), the fixing seat (11) cooperating with the laser equipment body (21); and a limiting mechanism is provided on the worktable (1), characterized in that: The limiting mechanism includes two movable seats (3), and four fixed plates (31) are fixedly connected to the top of the worktable (1). A crossbar (32) is fixedly connected between the two fixed plates (31) on the same side. Both ends of the movable seat (3) slide on the crossbar (32). The bottom of the worktable (1) is rotatably connected to a first gear (34) through a rotating shaft. The first gear (34) has a first rack (33) on both sides. The two first racks (33) are symmetrical about the center of the first gear (34). The first racks (33) mesh with the first gear (34). A connecting block (37) is fixedly connected to one end of the top of the first rack (33). The top of the connecting block (37) is fixedly connected to the bottom of the movable seat (3). Two sliding ports (12) are opened on the worktable (1). The connecting blocks (37) slide in the corresponding sliding ports (12). A distance sensor (6) is fixedly connected to the side wall of one of the movable seats (3).

2. The laser welding fixture according to claim 1, characterized in that: A second gear (35) is provided below the first gear (34), and the second gear (35) is fixedly connected to the rotating shaft; an L-shaped plate (381) is fixedly connected to the bottom of the worktable (1); an electric push rod (36) is fixedly connected to the top of the L-shaped plate (381), and a rectangular plate (382) is fixedly connected to the output end of the electric push rod (36); a second rack (38) is fixedly connected to the side wall of the rectangular plate (382), and the second rack (38) meshes with the second gear (35); the bottom of the second rack (38) is slidably connected to the top of the L-shaped plate (381).

3. The laser welding fixture according to claim 2, characterized in that: Two fixed blocks (4) are fixedly connected to the top of each movable seat (3). A bidirectional ball screw (42) is rotatably connected between the two fixed blocks (4) through a bearing. Two movable blocks (41) are threadedly connected to each bidirectional ball screw (42). A rotating block (44) is fixedly connected to one end of each bidirectional ball screw (42). A fixing mechanism is fixedly connected to the side wall of each movable block (41).

4. The laser welding fixture according to claim 3, characterized in that: The fixing mechanism includes a top plate (5) and a bottom plate (51). The bottom plate (51) is fixed to the side wall of the movable block (41) near the fixing frame (2). The top plate (5) is slidably connected to the movable block (41). Rubber pads are fixed to the adjacent side walls of the top plate (5) and the bottom plate (51). The movable block (41) is rotatably connected to a threaded rod (52) through a bearing. The top plate (5) is threadedly connected to the threaded rod (52). A handle (53) is fixed to the top of the threaded rod (52).

5. The laser welding fixture according to claim 4, characterized in that: Two guide rods (43) are fixed between the two fixed blocks (4), and the moving blocks (41) slide on the guide rods (43).

6. The laser welding fixture according to claim 5, characterized in that: The bottom of the workbench (1) is fixedly connected to four side plates (331), and a slide rod (332) is fixedly connected between two side plates (331) on the same side; two connecting plates (333) are fixedly connected to the side wall of the first rack (33), and the connecting plates (333) slide on the slide rod (332).

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