A material pressing device for laser welding and a laser welding apparatus

Abstract

The application relates to a pressing device for laser welding and a laser welding device, which comprises a support provided with a through hole for welding laser to pass through, a rolling piece in rotational connection with the support, the rolling piece corresponding to the position of the through hole, the rolling piece being light-transmitting, and a cleaning assembly in connection with the support, the cleaning assembly comprising a cleaning piece, the cleaning end of the cleaning piece being capable of abutting against the rolling piece. The pressing device for laser welding and the laser welding device can avoid welding position deformation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding pressure devices, in particular to a pressure device for laser welding and a laser welding equipment. BACKGROUND

[0002] Laser welding is a kind of high-efficiency precision welding technology using high-energy density laser beam as heat source. During the welding process of thin plates by laser, the thin plates are prone to deformation, and the flatness of the thin plates is different, which causes height difference in the welding position, and further causes height difference and gap in the welding position of the thin plates after welding. At present, the thin plates are pressed near the welding position by rollers, pressing plates and other ways to reduce the deformation degree of the thin plates, but the pressing near the welding position of the thin plates will cause the welding position to arch, which affects the welding effect. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to provide a pressure device for laser welding and a laser welding equipment, which can avoid deformation of the welding position.

[0004] To solve the above technical problems, the present application provides a pressure device for laser welding, comprising: a support, a through hole is arranged on the support, and the through hole is used for welding laser to pass through; a rolling member, the rolling member is rotatably connected with the support, the rolling member corresponds to the position of the through hole, and the rolling member has light transmission property; a cleaning assembly, the cleaning assembly is connected with the support, and the cleaning assembly comprises a cleaning member, and a cleaning end of the cleaning member can abut against the rolling member.

[0005] In an embodiment of the present application, grooves are arranged on the rolling member in the circumferential direction, and the grooves correspond to the position of the through hole.

[0006] In an embodiment of the present application, the bottom of the groove is provided with an arc-shaped protrusion, and the end of the protrusion is located on the plane of the side wall of the rolling member.

[0007] In an embodiment of the present application, the diameter of the rolling member gradually decreases from the middle to the end of the rolling member.

[0008] In an embodiment of the present application, the support is provided with a containing cavity, the rolling member is located in the containing cavity, the through hole is in communication with the containing cavity, the end of the containing cavity is provided with a connecting piece, and the rolling member is rotatably connected with the connecting piece.

[0009] In an embodiment of the present application, the cleaning assembly further comprises a connecting plate, the connecting plate is connected with the support, the cleaning member is connected with the connecting plate, and the cleaning end of the cleaning member can abut against the side wall of the rolling member.

[0010] In one embodiment of the present application, the cleaning assembly further comprises a guide rod, a first baffle, a second baffle and an elastic member, the guide rod is in sliding connection with the connecting plate, one end of the guide rod is connected with the cleaning member, the other end of the guide rod is connected with the second baffle, the second baffle is capable of abutting against the connecting plate, the first baffle is connected with the guide rod, one end of the elastic member is in abutment with the first baffle, and the other end of the elastic member is in abutment with the connecting plate.

[0011] In one embodiment of the present application, the cleaning assembly further comprises an adjusting member and a third baffle, the guide rod is in sliding connection with the third baffle, the third baffle is capable of abutting against the first baffle, the adjusting member is in threaded connection with the connecting plate, and the end of the adjusting member is connected with the third baffle.

[0012] In one embodiment of the present application, the bracket is connected with a first driving member, and the output end of the first driving member is connected with the connecting plate.

[0013] The present application further provides a laser welding device comprising the above-mentioned pressure device for laser welding.

[0014] The above technical scheme of the present application has the following advantages over the prior art:

[0015] The pressure device for laser welding and the laser welding device according to the present application can press down the welding position during welding, prevent the welding position from being deformed or arched, keep the welding position flat, refine the internal components of the welding seam, and eliminate the residual stress after welding, by virtue of the cooperation of the bracket and the rolling member and the light-transmitting property of the rolling member. The rolling member and the workpiece to be welded are prevented from sliding and rubbing, the scratches on the surface of the workpiece to be welded are avoided, the position of the workpiece to be welded is prevented from moving due to excessive friction, and the position with residual heat and uneven surface after welding of the workpiece is flattened, by virtue of the rotatable arrangement of the rolling member. The impurities on the side wall of the rolling member are cleaned by the cleaning member. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings.

[0017] Figure 1 is a structural schematic view of a pressure device for laser welding according to the present application;

[0018] Figure 2 is a structural schematic view of another embodiment of a rolling member;

[0019] Figure 3 is a structural schematic view of another embodiment of a rolling member;

[0020] Figure 4 is an assembly structure diagram of the cleaning assembly and the support;

[0021] Figure 5 is a structure diagram of the cleaning assembly.

[0022] The description of the drawings is as follows: 1, support; 2, rolling piece; 3, to-be-welded piece; 4, cleaning assembly; 5, first driving piece; 11, through hole; 12, accommodating cavity; 13, connecting piece; 21, groove; 41, cleaning piece; 42, connecting plate; 43, guide rod; 44, adjusting piece; 45, connecting block; 46, first baffle; 47, elastic piece; 48, second baffle; 49, third baffle. DETAILED DESCRIPTION

[0023] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not limiting to the present application.

[0024] Embodiment one

[0025] Referring to Figure 1 The laser welding pressure device of the present application comprises a support 1, a through hole 11 is arranged on the support 1, and the through hole 11 is used for welding laser to pass through; a rolling piece 2 is rotationally connected with the support 1, the rolling piece 2 corresponds to the position of the through hole 11, and the rolling piece 2 has light transmission property; a cleaning assembly 4 is connected with the support 1, and the cleaning assembly 4 comprises a cleaning piece 41, and the cleaning end of the cleaning piece 41 can abut against the rolling piece 2.

[0026] The laser welding pressure device of the present application, the rolling piece 2 presses down the welding position of the to-be-welded piece 3, the welding laser sequentially penetrates the through hole 11 and the rolling piece 2 to weld the welding position of the to-be-welded piece 3, the welding laser can continuously weld the welding position of the to-be-welded piece 3 by moving the support 1, and the rolling piece 2 moves along the welding position of the to-be-welded piece 3 to continuously press down the welding position. Through the cooperation of the support 1 and the rolling piece 2 and the light transmission property of the rolling piece 2, the welding position can be pressed down at the same time of welding, the deformation or arching of the welding position is prevented, the welding position is kept flat, the internal components of the welding seam are refined, and the residual stress after welding is eliminated. Through the rotatable arrangement of the rolling piece 2, the sliding friction between the rolling piece 2 and the to-be-welded piece 3 is prevented, the scratches on the surface of the to-be-welded piece 3 are avoided, the position of the to-be-welded piece 3 is prevented from moving due to excessive friction, and the position with residual temperature and uneven surface after welding on the welding piece can be flattened. Through the arrangement of the cleaning assembly 4, the cleaning piece 41 can clean the impurities on the side wall of the rolling piece 2.

[0027] The bracket 1 is used for connecting the rolling member 2, the top of the bracket 1 is provided with a through hole 11 for welding laser to pass through, the through hole 11 is vertically arranged on the top of the bracket 1, the bottom of the bracket 1 is provided with a receiving cavity 12, the through hole 11 is communicated with the receiving cavity 12. The end of the receiving cavity 12 is provided with a connecting piece 13, that is, the bottom of the bracket 1 is provided with the connecting piece 13 on the edge of the opening end of the receiving cavity 12, and the connecting piece 13 is symmetrically arranged.

[0028] The rolling member 2 is rotationally connected with the bracket 1, the rolling member 2 corresponds to the position of the through hole 11, the rolling member 2 has light transmission, specifically, the rolling member 2 is made of a material with high light transmission, high hardness and high temperature resistance, such as diamond material, so as to ensure that the rolling member 2 will not be damaged during welding. The rolling member 2 is in a cylindrical shape, the rolling member 2 is located in the receiving cavity 12, and part of the rolling member 2 protrudes from the receiving cavity 12. The two ends of the rolling member 2 are rotationally connected with the two connecting pieces 13, so that the rolling member 2 is rotationally connected with the bracket 1. The rolling member 2 corresponds to the position of the through hole 11 in the vertical direction, and the welding laser can move along the cross-sectional diameter of the rolling member 2 after penetrating through the through hole 11, pass through the center position of the rolling member 2 and reach the welding position of the workpiece 3 to be welded. During the movement of the bracket 1, the rolling member 2 can roll on the workpiece 3 to be welded, and the side wall of the rolling member 2 abuts against the workpiece 3 to be welded.

[0029] Referring to Figure 2 In another embodiment, a circumferential groove 21 is arranged on the middle position of the side wall of the rolling member 2, the groove 21 corresponds to the position of the through hole 11, that is, the welding laser can pass through the groove 21 to reach the welding position of the workpiece 3 to be welded after penetrating through the through hole 11, and the arrangement of the groove 21 can make the heat and metal vapor generated during laser welding be dissipated, so as to avoid the temperature of the rolling member 2 and the workpiece 3 to be welded being too high. Preferably, the bottom of the groove 21 is further provided with an arc-shaped protrusion, the end of the protrusion is located on the plane of the side wall of the rolling member 2, that is, the end of the protrusion can abut against the welding position of the workpiece 3 to be welded, the protrusion corresponds to the position of the through hole 11, and the welding laser can penetrate through the protrusion to reach the welding position of the workpiece 3 to be welded, and the arrangement of the protrusion can press down the welding position of the workpiece 3 to be welded, so as to prevent the workpiece 3 to be welded from being deformed, and the heat and metal vapor generated during laser welding can be dissipated between the two sides of the protrusion and the side wall of the groove 21.

[0030] Referring to Figure 3 In another embodiment, the diameter of the rolling member 2 gradually decreases from the middle to the end of the rolling member 2, that is, the positions of the two ends of the rolling member 2 are in an arc shape, the middle position of the side wall of the rolling member 2 protrudes and abuts against the welding position of the workpiece 3 to be welded, and the welding laser moves along the middle position of the rolling member 2 to reach the welding position of the workpiece 3 to be welded, so that the heat and metal vapor generated during laser welding can be quickly dissipated from the two sides of the protruding position of the side wall of the rolling member 2.

[0031] Referring to Figure 4 and Figure 5As shown, the cleaning assembly 4 comprises a connecting plate 42 and a cleaning piece 41, the connecting plate 42 of the cleaning assembly 4 is connected with the side wall of the support 1, the cleaning piece 41 can be regarded as a scraper, the blade end of the cleaning piece 41 is a cleaning end, the cleaning piece 41 is connected with the connecting plate 42, and the cleaning end of the cleaning piece 41 can abut against the side wall of the rolling piece 2. Specifically, the cleaning assembly 4 further comprises a guide rod 43, a first baffle 46, a second baffle 48 and an elastic piece 47, the guide rod 43 is slidingly connected with the connecting plate 42, one end of the guide rod 43 is connected with the end of the cleaning piece 41 away from the cleaning end, the other end of the guide rod 43 is connected with the second baffle 48, the guide rod 43 penetrates through the connecting plate 42, and the second baffle 48 can abut against the side of the connecting plate 42 away from the cleaning piece 41. The first baffle 46 is connected with the position of the guide rod 43 close to the cleaning piece 41, that is, the guide rod 43 penetrates through the first baffle 46. The elastic piece 47 can be regarded as a spring, one end of the elastic piece 47 abuts against the first baffle 46, and the other end of the elastic piece 47 abuts against the connecting plate 42, and the arrangement of the first baffle 46 and the second baffle 48 can prevent the guide rod 43 from being separated from the connecting plate 42, and the elastic piece 47 has a buffering effect when the cleaning piece 41 abuts against the rolling piece 2.

[0032] The cleaning assembly 4 further comprises an adjusting piece 44 and a third baffle 49, the guide rod 43 is slidingly connected with the third baffle 49, the third baffle 49 can abut against the side of the first baffle 46 away from the connecting plate 42, the adjusting piece 44 is threadedly connected with the connecting plate 42, one end of the adjusting piece 44 is connected with the third baffle 49, and the other end of the adjusting piece 44 is connected with a connecting block 45, the connecting block 45 can abut against the end of the connecting plate 42 away from the cleaning piece 41, the adjusting piece 44 can be rotated by rotating the connecting block 45, so that the position of the third baffle 49 is adjusted, and then the position of the cleaning piece 41 is adjusted.

[0033] The support 1 is connected with a first driving piece 5, the first driving piece 5 can be regarded as a motor, the output end of the first driving piece 5 is connected with the connecting plate 42, specifically, the side wall of the support 1 is connected with a mounting seat, the connecting plate 42 is rotationally connected with the mounting seat, and the first driving piece 5 is connected with the support 1, so that the first driving piece 5 can drive the connecting plate 42 to rotate, and then the position of the cleaning piece 41 is adjusted, when the rolling piece 2 needs to be cleaned, the first driving piece 5 drives the cleaning piece 41 to move until the cleaning piece 41 abuts against the rolling piece 2, at this time, the rolling piece 2 rolls, so that the cleaning piece 41 can scrape off the impurities on the side wall of the rolling piece 2. By adjusting the position of the third baffle 49, the elastic force of the elastic piece 47 is adjusted, and then the pressure between the cleaning piece 41 and the rolling piece 2 can be accurately adjusted, so that the side wall of the rolling piece 2 is prevented from being damaged by the cleaning piece 41. Preferably, the cleaning assembly 4 can be symmetrically provided with two, so as to improve the cleaning efficiency of the rolling piece 2 and improve the cleanliness of the side wall of the rolling piece 2.

[0034] In use, the support 1 is moved to the welding position of the workpiece 3, the rolling member 2 is pressed against the welding position of the workpiece 3, the welding laser sequentially penetrates the through hole 11 and the welding position of the workpiece 3, and the welding laser continuously welds the welding position of the workpiece 3 by moving the support 1 and continuously pressing the rolling member 2 against the welding position. When the rolling member 2 needs to be cleaned, the first driving member 5 drives the cleaning member 41 to move until the cleaning end of the cleaning member 41 abuts against the rolling member 2, and then the rolling member 2 is rotated to clean the side wall of the rolling member 2 by the cleaning member 41.

[0035] Embodiment two

[0036] The application further provides a laser welding device comprising the pressure device for laser welding in the embodiment one.

[0037] The laser welding device further comprises a laser generating member, a second driving member and a moving assembly. The output end of the laser generating member corresponds to the through hole 11 of the support 1, and the laser generated by the laser generating member can be emitted along the central axis of the through hole 11 and penetrate the rolling member 2. The output end of the second driving member is connected with the support 1, the second driving member is a linear driving member, and the second driving member can adjust the position of the rolling member 2 and the pressure between the rolling member 2 and the workpiece 3. The moving assembly can drive the support 1 and the laser generating member to move, so that the laser generating member can move and continuously weld, and the rolling member 2 can continuously press the welding position while rolling on the workpiece 3.

[0038] The pressure device for laser welding and the laser welding device can press the welding position while welding, prevent the welding position from being deformed or arched, keep the welding position flat, refine the internal components of the welding seam and eliminate the residual stress after welding. The rotatable arrangement of the rolling member 2 prevents the rolling member 2 from sliding and rubbing against the workpiece 3, avoids causing scratches on the surface of the workpiece 3, prevents the workpiece 3 from moving due to excessive friction, and can also flatten the position of the workpiece 3 which has residual heat and an uneven surface after welding. The cleaning member 41 of the cleaning assembly 4 can clean the impurities on the side wall of the rolling member 2.

[0039] Obviously, the above embodiments are only examples for clearly illustrating the application, and are not intended to limit the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments are not required to be exhausted, and the obvious changes or modifications derived therefrom are still within the protection scope of the application.

Claims

1. A material holding device for laser welding, characterized in that: include: A bracket, wherein the bracket is provided with a through hole for the welding laser to pass through; A rolling member, the rolling member being rotatably connected to the bracket, the rolling member corresponding to the position of the through hole, the rolling member being light-transmissive, the rolling member being provided with a groove along the circumferential direction, the groove corresponding to the position of the through hole, the bottom of the groove being provided with an arc-shaped protrusion, the end of the protrusion being located in the plane where the side wall of the rolling member is located; A cleaning assembly is connected to the bracket, and the cleaning assembly includes a cleaning piece, and a cleaning end of the cleaning piece can be abutted against the rolling piece.

2. The laser welding pressing device according to claim 1, characterized in that: The bracket is provided with an accommodating cavity, the rolling member is located in the accommodating cavity, the through hole is communicated with the accommodating cavity, a connecting member is provided at the end of the accommodating cavity, and the rolling member is rotatably connected to the connecting member.

3. The laser welding pressing device according to claim 1, characterized in that: The cleaning assembly further comprises a connecting plate, wherein the connecting plate is connected to the bracket, the cleaning piece is connected to the connecting plate, and the cleaning end of the cleaning piece can abut against the side wall of the rolling piece.

4. The laser welding pressing device according to claim 3, characterized in that: The cleaning assembly also includes a guide rod, a first baffle, a second baffle and an elastic member. The guide rod is slidably connected to the connecting plate, one end of the guide rod is connected to the cleaning member, the other end of the guide rod is connected to the second baffle, the second baffle can be abutted against the connecting plate, the first baffle is connected to the guide rod, one end of the elastic member is abutted against the first baffle, and the other end of the elastic member is abutted against the connecting plate.

5. The laser welding pressing device according to claim 4, characterized in that: The cleaning assembly also includes an adjusting member and a third baffle. The guide rod is slidably connected to the third baffle. The third baffle can be abutted against the first baffle. The adjusting member is threadedly connected to the connecting plate. The end of the adjusting member is connected to the third baffle.

6. The laser welding pressing device according to claim 3, characterized in that: The bracket is connected to a first driving member, and an output end of the first driving member is connected to the connecting plate.

7. A laser welding device, characterized in that: The laser welding material holding device comprises the material holding device according to any one of claims 1 to 6.

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