Positioning jig for laser welding

Abstract

The utility model provides a positioning jig for laser welding, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The positioning jig for laser welding comprises a flat-plate-shaped base plate and further comprises a bottom plate, a first pressing plate, a second pressing plate and an elastic pre-tightening assembly, the bottom plate is fixedly connected to the upper portion of the base plate, the bottom plate and the base plate are in surface contact connection, the first pressing plate and the second pressing plate are both in a long strip shape, one end of the first pressing plate is hinged to the bottom plate, and the other end of the first pressing plate is hinged to the elastic pre-tightening assembly. One end of the first pressing plate is hinged to the base plate, the other end of the first pressing plate is detachably connected to the base plate, the elastic pre-tightening assembly is movably connected to the base plate, one end of the second pressing plate is hinged to the elastic pre-tightening assembly, and the other end of the second pressing plate is detachably connected to the elastic pre-tightening assembly. The positioning jig for laser welding is high in stability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical technical field relates to a kind of positioning fixture for laser welding. BACKGROUND

[0002] Laser welding fixture is a special tool or device used to fix, position and support workpieces during laser welding process.

[0003] Specifically, the role of fixture in laser welding process has the following points:

[0004] 1. Ensure that the workpiece maintains the correct position and angle during welding, avoiding deviation.

[0005] 2. Prevent the workpiece from moving or deforming during welding, ensuring welding stability.

[0006] 3. Through precise fixture design, ensure that the laser beam accurately irradiates the welding position, improving welding quality.

[0007] 4. Through fast clamping and positioning, reduce operation time and improve production efficiency.

[0008] 5. Avoid thermal or mechanical damage to other parts of the workpiece during welding.

[0009] It can be seen that the design and manufacture of fixture have important influence on welding quality, precision and efficiency.

[0010] However, the existing welding fixture usually only clamps the workpiece to be welded, which can cause the workpiece to be welded to loosen and have poor stability.

[0011] Chinese patent CN115555715A discloses a rotatable laser welding fixture and laser welding device. The fixture includes an upper fixture, a lower fixture and a rotating assembly. The upper fixture and the lower fixture are closed with a hinge. The magnet block locks the upper fixture and the lower fixture. The rotating shaft of the rotating assembly is driven by an external drive mechanism. The drive mechanism can be a stepper motor. The stepper motor converts electrical pulse signals into corresponding angular displacement or linear displacement. The laser welding device welds the welding position in at least four welding areas through the laser hole. The fixture increases the welding angle of the workpiece and improves the stability of the workpiece, the work efficiency and the product yield.

[0012] It can be seen that the workpiece to be welded in the above patent is only positioned and connected by the upper fixture and the lower fixture, which also has poor positioning stability. SUMMARY

[0013] The utility model discloses a high stability and compact structure's positioning fixture for laser welding is provided to solve the above -mentioned problems of prior art.

[0014] The utility model discloses a positioning fixture for laser welding, including the base plate of flat board, its characterized in that, still including bottom plate, pressing plate no.

[0015] A positioning fixture for laser welding, including the base plate of flat board, its characterized in that, still including bottom plate, pressing plate no.

[0016] In the positioning fixture for laser welding described above, the two sides of one end of the bottom plate are respectively connected with fasteners no.

[0017] In the positioning fixture for laser welding described above, the elastic pre-tightening assembly includes a guide rod, a pressing plate no.

[0018] In the positioning fixture for laser welding described above, the two ends of the pressing plate no.

[0019] In the positioning fixture for laser welding described above, when the other end of the pressing plate no.

[0020] In the positioning fixture for laser welding, the positioning block is fixed on the base plate, and the inner end of the guide rod is fixed on the positioning block.

[0021] In the positioning fixture for laser welding, the spring is sleeved on the guide rod, and the two ends of the spring act on the positioning block and the third pressing plate respectively.

[0022] In the positioning fixture for laser welding, the guide rail is fixed on the base plate, and the lower part of the third pressing plate is connected to the guide rail.

[0023] In the positioning fixture for laser welding, the positioning block, the guide rod, the spring and the guide rail form a guide unit, the number of the guide units is two, the two guide units are connected to the base plates on both sides of the bottom plate, the two ends of the third pressing plate are provided with guide holes, and the guide rods in the two guide units are arranged in the corresponding guide holes.

[0024] In the positioning fixture for laser welding, the locking block is further fixed on the base plate, the locking rod is threadedly connected to the locking block, and the third pressing plate has a tendency to abut against the locking rod under the elastic force of the spring.

[0025] Compared with the prior art, the positioning fixture for laser welding can clamp and position the two ends of the workpiece to be welded by the first pressing plate and the second pressing plate, and can make the second pressing plate away from the first pressing plate under the action of the elastic pre-tightening assembly, so that the clamped workpiece to be welded is stably tensioned, thereby ensuring that the workpiece can be stably processed for corresponding welding operation.

[0026] It can be seen that the fixture has high stability, and the clamping can be completed only by connecting the first pressing plate and the second pressing plate to the two ends of the workpiece to be welded, so that the workpiece to be welded is clamped simply and has high practical value.

[0027] In addition, since the first pressing plate, the second pressing plate, the bottom plate and the base plate are arranged in a centralized manner, the structure of the fixture is also relatively compact. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic view of the three-dimensional structure of the positioning fixture for laser welding.

[0029] Figure 2 is a schematic view of the three-dimensional structure of the positioning fixture for laser welding in another direction.

[0030] Figure 3 is a schematic view of the cross-sectional structure of the positioning fixture for laser welding.

[0031] In the figure, 1, base plate; 2, bottom plate; 3, pressing plate one; 3a, positioning notch one; 4, pressing plate two; 4a, positioning notch two; 5, fastener one; 6, fastener two; 7, guide rod; 8, pressing plate three; 8a, guide hole; 9, spring; 10, positioning block; 11, guide rail; 12, locking block; 13, locking rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] It should be noted that when a component is referred to as "mounted on" another component, it can be directly mounted on the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. When a component is referred to as "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0035] As shown in Figure 1 and Figure 2 and Figure 3 The positioning jig for laser welding includes a base plate 1 in the form of a flat plate, a bottom plate 2, a pressing plate one 3, a pressing plate two 4, and an elastic pre-tightening assembly. The bottom plate 2 is fixedly connected to the upper portion of the base plate 1 and the two are in surface contact connection. The pressing plate one 3 and the pressing plate two 4 are both in the form of a long strip. One end of the pressing plate one 3 is hingedly connected to the bottom plate 2, and the other end of the pressing plate one 3 is detachably connected to the bottom plate 2. The elastic pre-tightening assembly is movably connected to the base plate 1. One end of the pressing plate two 4 is hingedly connected to the elastic pre-tightening assembly, and the other end of the pressing plate two 4 is detachably connected to the elastic pre-tightening assembly. When the other end of the pressing plate one 3 is connected to the bottom plate 2 and the other end of the pressing plate two 4 is connected to the elastic pre-tightening assembly, the workpiece to be welded on the bottom plate 2 can be positioned by the pressing plate one 3 and the pressing plate two 4 at both ends, respectively. The pressing plate two 4 has a tendency to move away from the pressing plate one 3 under the action of the elastic pre-tightening assembly.

[0036] In the initial state, the other end of the first pressing plate 3 is away from the base plate 2, and the other end of the second pressing plate 4 is away from the elastic pre-tightening assembly.

[0037] The positioning jig for laser welding is used for welding VC uniform temperature plates. The raw materials of the VC uniform temperature plates have a plurality of pieces and are in the form of long pieces. The plurality of VC uniform temperature plate raw materials are stacked at the base plate 2.

[0038] After the first pressing plate 3 and the second pressing plate 4 are rotated by applying an external force, the two ends of the VC uniform temperature plate raw material are respectively positioned and connected by the first pressing plate 3 and the second pressing plate 4. At the same time, under the action of the elastic pre-tightening assembly, the second pressing plate 4 has a tendency to move away from the first pressing plate 3, and finally the VC uniform temperature plate is clamped and at the same time is stably tensioned.

[0039] After the above operation is completed, the VC uniform temperature plate raw material stably tensioned is stably formed into a finished VC uniform temperature plate after laser welding treatment.

[0040] The two sides of one end of the base plate 2 are respectively connected with fasteners one 5. The first pressing plate 3 is hinged on the base plate 2 through one of the fasteners one 5. The other end of the first pressing plate 3 has a recessed positioning notch 3a. When the first pressing plate 3 swings around the hinged position, the other fastener one 5 can be embedded in the positioning notch 3a.

[0041] The fastener one 5 is a bolt, and the fastener one 5 is threadedly connected to the base plate 2.

[0042] The elastic pre-tightening assembly includes a guide rod 7, a third pressing plate 8, and a spring 9. The guide rod 7 is fixedly connected to the base plate 1. The third pressing plate 8 is in the form of a long strip. The third pressing plate 8 has a through guide hole 8a. The guide rod 7 is arranged in the guide hole 8a. The spring 9 is located between the third pressing plate 8 and the base plate 1. Under the elastic force of the spring 9, the third pressing plate 8 has a tendency to move away from the first pressing plate 3. The second pressing plate 4 is connected to the upper part of the third pressing plate 8.

[0043] Under the action of the guide rod 7, the third pressing plate 8 can stably linearly translate.

[0044] Under the action of the spring 9, the third pressing plate 8 always has a tendency to move away from the first pressing plate 3.

[0045] The two ends of the third pressing plate 8 are respectively connected with fasteners two 6. The second pressing plate 4 is hinged on one end of the third pressing plate 8 through one of the fasteners two 6. The other end of the second pressing plate 4 has a recessed positioning notch 4a. When the second pressing plate 4 swings around the hinged position, the other fastener two 6 can be embedded in the positioning notch 4a.

[0046] The fastener two 6 is a bolt, and the fastener two 6 is threadedly connected to the third pressing plate 8.

[0047] When the other end of the pressing plate 3 is connected to the bottom plate 2, and the other end of the pressing plate 4 is connected to the pressing plate 8, the pressing plate 3 and the pressing plate 4 are arranged in parallel, and the positioning recess 3a and the positioning recess 4a are oppositely corresponding.

[0048] The structure can stably position the workpiece to be welded on the jig.

[0049] The positioning block 10 is fixed on the substrate 1, and the inner end of the guide rod 7 is fixed on the positioning block 10.

[0050] The positioning block 10 provides a position for the guide rod 7 to be connected, so that the guide rod 7 is stably connected to the substrate 1.

[0051] The spring 9 is sleeved on the guide rod 7, and the two ends of the spring 9 act on the positioning block 10 and the pressing plate 8 respectively.

[0052] The guide rod 7 not only guides the pressing plate 8, but also provides a position for the spring 9 to be connected, so that the spring 9 is prevented from falling off.

[0053] The guide rail 11 is fixed on the substrate 1, and the lower part of the pressing plate 8 is connected to the guide rail 11.

[0054] Under the action of the guide rail 11, the pressing plate 8 can move stably.

[0055] The positioning block 10, the guide rod 7, the spring 9 and the guide rail 11 form a guide unit, the number of the guide unit is two, the two guide units are connected to the substrate 1 on both sides of the bottom plate 2, the two ends of the pressing plate 8 are provided with guide holes 8a, and the guide rods 7 in the two guide units are arranged in the corresponding guide holes 8a.

[0056] The two guide units can ensure that the pressing plate 8 moves stably.

[0057] The locking block 12 is also fixed on the substrate 1, the locking rod 13 is threadedly connected to the locking block 12, and the pressing plate 8 has a tendency to abut against the locking rod 13 under the elastic force of the spring 9.

[0058] In the initial state, the pressing plate 8 abuts against the locking rod 13. When the workpiece to be welded is positioned on the jig, the locking rod 13 is withdrawn and away from the pressing plate 8. At this time, the workpiece to be welded can be stably tensioned under the elastic force of the spring 9.

[0059] The locking rod 13 is a screw rod, the locking rod 13 is arranged in the locking block 12 and is threadedly connected thereto.

[0060] The positioning jig for laser welding can clamp and position the two ends of the workpiece to be welded on the bottom plate by the pressing plate one and the pressing plate two, and can make the pressing plate two away from the pressing plate one under the action of the elastic pre-tightening assembly, so that the clamped workpiece to be welded is stably tensioned, thereby ensuring that the workpiece can stably perform corresponding welding operation processing.

[0061] It can be seen that the jig has high stability, and only needs to connect the pressing plate one and the pressing plate two at the two ends of the workpiece to be welded to complete clamping, so that the workpiece to be welded is clamped simply and has high practical value.

[0062] In addition, since the pressing plate one, the pressing plate two, the bottom plate and the base plate are centrally arranged, the structure of the jig is also relatively compact.

[0063] The technical features of the above-described embodiments can be combined arbitrarily, and for the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0064] Those skilled in the art should recognize that the above embodiments are used to illustrate the present application, and are not used as a limitation of the present application, and as long as the changes and variations of the above embodiments are within the spirit and scope of the present application, they fall within the scope of the present application.

Claims

1. A positioning jig for laser welding, comprising a base plate (1) in the form of a flat plate, characterized in that The device further comprises a bottom plate (2), a pressing plate one (3), a pressing plate two (4) and an elastic pre-tightening assembly, the bottom plate (2) is fixedly connected to the upper portion of the base plate (1) and the two are connected in surface contact, the pressing plate one (3) and the pressing plate two (4) are both in the shape of a long strip, one end of the pressing plate one (3) is hingedly connected to the bottom plate (2), the other end of the pressing plate one (3) is detachably connected to the bottom plate (2), the elastic pre-tightening assembly is movably connected to the base plate (1), one end of the pressing plate two (4) is hingedly connected to the elastic pre-tightening assembly, the other end of the pressing plate two (4) is detachably connected to the elastic pre-tightening assembly, when the other end of the pressing plate one (3) is connected to the bottom plate (2) and the other end of the pressing plate two (4) is connected to the elastic pre-tightening assembly, the workpiece to be welded on the bottom plate (2) can be positioned by the pressing plate one (3) and the pressing plate two (4) respectively, and the pressing plate two (4) has a tendency to move away from the pressing plate one (3) under the action of the elastic pre-tightening assembly.

2. The positioning jig for laser welding according to claim 1, characterized by, The two sides of one end of the bottom plate (2) are respectively connected with fasteners one (5), the pressing plate one (3) is hingedly connected to the bottom plate (2) through one of the fasteners one (5), the other end of the pressing plate one (3) has a recessed positioning recess one (3a), and the other fastener one (5) can be embedded in the positioning recess one (3a) after the pressing plate one (3) swings around the hinged connection.

3. The positioning jig for laser welding according to claim 2, wherein The elastic pre-tightening assembly comprises a guide rod (7), a pressing plate three (8) and a spring (9), the guide rod (7) is fixedly connected to the base plate (1), the pressing plate three (8) is in the shape of a long strip, the pressing plate three (8) has a guide hole (8a) penetrating therethrough, the guide rod (7) is arranged in the guide hole (8a), the spring (9) is located between the pressing plate three (8) and the base plate (1), and the pressing plate three (8) has a tendency to move away from the pressing plate one (3) under the elastic force of the spring (9), and the pressing plate two (4) is connected to the upper portion of the pressing plate three (8).

4. The positioning jig for laser welding according to claim 3, characterized by, The two ends of the pressing plate three (8) are respectively connected with fasteners two (6), the pressing plate two (4) is hingedly connected to one end of the pressing plate three (8) through one of the fasteners two (6), the other end of the pressing plate two (4) has a recessed positioning recess two (4a), and the other fastener two (6) can be embedded in the positioning recess two (4a) after the pressing plate two (4) swings around the hinged connection.

5. The positioning fixture for laser welding according to claim 4, wherein When the other end of the pressing plate one (3) is connected to the bottom plate (2) and the other end of the pressing plate two (4) is connected to the pressing plate three (8), the pressing plate one (3) and the pressing plate two (4) are arranged in parallel, and the positioning recess one (3a) and the positioning recess two (4a) are opposite and corresponding.

6. The positioning fixture for laser welding according to claim 5, wherein The base plate (1) is fixedly connected with a positioning block (10), and the inner end of the guide rod (7) is fixedly connected to the positioning block (10).

7. The positioning fixture for laser welding according to claim 6, wherein The spring (9) is sleeved on the guide rod (7), and the two ends of the spring (9) act on the positioning block (10) and the pressing plate three (8) respectively.

8. The positioning fixture for laser welding according to claim 7, wherein The base plate (1) is fixedly connected with a guide rail (11), and the lower portion of the pressing plate three (8) is connected to the guide rail (11).

9. The positioning fixture for laser welding according to claim 8, wherein The positioning block (10), the guide rod (7), the spring (9) and the guide rail (11) form a guide unit, the number of the guide units is two, the two guide units are connected to the base plate (1) on both sides of the bottom plate (2), both ends of the pressing plate three (8) are provided with guide holes (8a), the guide rod (7) in the two guide units is arranged in the corresponding guide hole (8a).

10. The positioning fixture for laser welding according to claim 9, wherein The base plate (1) is further fixed with a locking block (12), the locking block (12) is threadedly connected with a locking rod (13), and the pressing plate three (8) has a tendency to abut against the locking rod (13) under the elastic force of the spring (9).

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