Laser welding hold-down mechanism capable of reducing size change of welding seam of thin plate

Abstract

The laser welding hold-down mechanism capable of reducing the size change of the welding seam of the thin plate comprises an operation frame, a fixed box, an I-shaped plate, a two-way lead screw, a driving motor, a movable block and a telescopic rod, the fixed box is fixed at the top end of the operation frame, a top pressing piece is fixed on the movable rod, two opposite sides of the top pressing piece respectively extend to form abutting arms, and the abutting arms are fixed on the left side and the right side of the operation frame. And abutting pieces are arranged under abutting arms on the two sides of the jacking piece respectively and penetrate through side skirt plates of the I-shaped plate, a plurality of extension springs are hinged to the lower portions of the side skirt plates of the I-shaped plate, and the other ends of the extension springs are hinged to rod pieces of the abutting pieces. According to the utility model, the uniformity of the workpiece pressing force is improved, so that the workpiece in the pressing mechanism is uniformly stressed, the overall clamping degree of the workpiece is high, the welding is accurate, the possibility of missing welding is low, the size change of a welding seam of a thin plate is reduced, the production efficiency is high, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a laser welding pressure mechanism that reduces the size change of sheet part welds. BACKGROUND

[0002] Laser welding is a kind of high-efficiency precision welding method using high-energy density laser beam as heat source, and laser welding is one of important aspects of laser material processing technology application. When laser welding is carried out on sheet parts, various tooling pressure mechanisms need to be used. The utility model patent with application number 202022602933.1 relates to a pressure device for welding, which ensures the tightness between two groups of welding parts. However, during the fixing process of the pressure mechanism, the uniformity of the pressure force of the pressure mechanism on the workpiece is low, which leads to uneven stress of the workpiece in the pressure mechanism, and further leads to the reduction of the overall clamping degree of the workpiece, inaccurate welding, and easy occurrence of missed welding. Therefore, it is necessary to re-supply welding, which reduces the production efficiency and increases the production cost. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to provide a laser welding pressure mechanism that reduces the size change of sheet part welds, so as to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides technical scheme as follows: a laser welding pressure mechanism that reduces thin plate piece weld size change, including operation frame, fixed box, channel bar, two -way lead screw, drive motor, movable block, telescopic link, the top fixed box of operation frame is welded with channel bar between two groups of horizontal inner wall of fixed box, the inside of operation frame is provided with corresponding upper pressing plate and lower pressing plate, the right side of fixed box is provided with drive motor, the output end of drive motor is connected with two -way lead screw one end through coupling, the other end of two -way lead screw in proper order is penetrated fixed box right side and the vertical section of channel bar and extends to channel bar left side, the one end of two -way lead screw away from drive motor is connected with a group of vertical inner wall of fixed box through bearing, two groups of thread parts of two -way lead screw outer periphery are equipped with movable block respectively, the fixed mouth of channel bar outer wall is provided with movable rod perpendicularly, the top of two groups of movable block is all hinged with telescopic link, the one end of telescopic link away from movable block is hinged with channel bar inner side wall, the bottom of two groups of movable block is all hinged with connecting rod, the one end of connecting rod away from movable block is hinged with the hinged block of movable rod outer periphery welding, the lower half of movable rod extends to the inside of operation frame, the bottom of movable rod is fixedly connected with the fixed disc of upper pressing plate upper portion through lock bolt, the movable rod is fixed with top pressure spare, the opposite two sides of top pressure spare extend resistance pressure arm respectively, resistance pressure arm below the two sides of top pressure spare is equipped with resistance pressure piece respectively, resistance pressure piece passes through the side apron of channel bar, and the below of channel bar side apron is hinged with a plurality of tension springs, the other end of tension spring is hinged on the rod piece of resistance pressure piece.

[0005] The bottom of resistance pressure piece is provided with resistance pressure block, and the bottom surface of resistance pressure block is provided with elastic pad.

[0006] After the threaded column of resistance pressure block upper portion is aligned with the threaded portion of resistance pressure piece rod bottom, the threaded sleeve fastens the two threads.

[0007] Compared with the prior art, the utility model discloses have reached the beneficial effect is: the utility model discloses the utility model technology scheme of application number 202022602933. 1 is fixed with the top pressure spare on the moving rod, and the opposite both sides of top pressure spare extend respectively have the pressure arm, and the pressure arm of both sides of top pressure spare is below respectively equipped with the pressure spare, and the pressure spare passes through the side apron of the channel section plate, and the below of channel section plate side apron is hinged with a plurality of tension springs, and the other end of tension spring is hinged on the rod spare of pressure spare, when moving rod is under the action of drive motor, two -way screw, movable block, telescopic rod and connecting rod and moves down, the pressure arm of top pressure spare presses respectively pressure spare, make the bottom end of pressure spare press in the both sides of upper pressing plate, and then after the compression of upper pressing plate and lower pressing plate, the bottom end of pressure spare firmly press in the both sides of upper pressing plate, improve the uniformity of workpiece compression intensity, make the workpiece in compression mechanism stress even, guarantee the overall clamping degree of workpiece is high, and the welding is accurate, and it is not easy to cause the missed welding, reduces the size change of sheet part weld, and production efficiency is high, and production cost reduces. BRIEF DESCRIPTION OF DRAWINGS

[0008] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification.

[0009] Figure 1 It is the structural schematic diagram of the utility model;

[0010] Figure 2 It is Figure 1 The enlarged view of A in

[0011] In the drawing: 1 operating frame;2 fixed box;3 channel section plate;4 two -way screw;5 drive motor;6 movable block;7 telescopic rod;8 upper pressing plate;9 lower pressing plate;10 moving rod;11 fixed disc;12 top pressure spare;13 pressure spare;14 tension spring;15 pressure block;16 threaded sleeve;17 connecting rod. DETAILED DESCRIPTION

[0012] 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 a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0013] Please refer to Figures 1-2The utility model provides technical scheme: a laser welding pressure mechanism that reduces thin plate piece weld size change, including operation frame 1, fixed box 2, work shape board 3, bidirectional lead screw 4, drive motor 5, movable block 6, telescopic link 7, the top fixed box 2 of operation frame 1 is welded with work shape board 3 between two groups of horizontal inner walls of fixed box 2, the inside of operation frame 1 is provided with corresponding upper pressing plate 8 and lower pressing plate 9, the right side of fixed box 2 is provided with drive motor 5, the output end of drive motor 5 is connected with bidirectional lead screw 4 one end through coupling, the other end of bidirectional lead screw 4 is in proper order and penetrates the vertical section of fixed box 2 right side and work shape board 3 and extends to work shape board 3 left side, the one end of bidirectional lead screw 4 away from drive motor 5 is connected with a group of vertical inner walls of fixed box 2 through bearing and rotates, and two groups of threaded portions of bidirectional lead screw 4 outer periphery are equipped with movable block 6 respectively, and the fixed mouth of the outer wall of work shape board 3 is vertically provided with moving rod 10, the top of two groups of movable block 6 is hinged with telescopic link 7, and the one end of telescopic link 7 away from movable block 6 is hinged with the inner side wall of work shape board 3;The bottom of two groups of movable block 6 is hinged with connecting rod 17, and the one end of connecting rod 17 away from movable block 6 is hinged with the hinged block welded on the outer periphery of moving rod 10, and the lower half of moving rod 10 extends to the inside of operation frame 1, and the bottom of moving rod 10 is fixedly connected with the fixed disc 11 welded on the upper portion of upper pressing plate 8 through locking bolt, and moving rod 10 is fixed with top pressure piece 12, and the opposite two sides of top pressure piece 12 extend the pressure arm respectively, and the pressure arm of the two sides of top pressure piece 12 is below and is respectively provided with pressure piece 13, and pressure piece 13 passes through the side skirt plate of work shape board 3, and a plurality of tension springs 14 are hinged below the side skirt plate of work shape board 3, and the other end of tension spring 14 is hinged on the rod of pressure piece 13.

[0014] The bottom of pressure piece 13 is provided with pressure block 15, and the bottom surface of pressure block 15 is provided with elastic pad.

[0015] The threaded column of pressure block 15 upper portion is opposite with the threaded portion of the rod of pressure piece 13 bottom end, and the threaded sleeve 16 fastens the threaded of both, and the design of this structure makes that pressure block 15 can be replaced, satisfies the wider application range of the laser welding pressure mechanism.

[0016] Specific working principle: the laser welding compression mechanism, in use, first place the sheet on the lower pressing plate 9, then start the drive motor 5, drive motor 5 drive screw 4 rotation, two groups of movable block 6 drive telescopic rod 7 telescopic, and make two groups of connecting rod 17 drive moving rod 10 downward movement, and when the moving rod 10 down, the top pressure piece 12 two sides respectively extend and press the arm respectively down and press the piece 13, so that the bottom end of the pressing piece 13 press the upper part of the upper pressing plate 8, when the upper pressing plate 8 and the lower pressing plate 9 fixed sheet piece, the bottom end of the two pressing pieces 13 will be the upper part of the upper pressing plate 8 tightly, improve the uniformity of sheet piece compression intensity, so that the workpiece in the compression mechanism is uniform, ensure the overall clamping degree of workpiece is high, welding precision, not easy to cause the missed welding, reduce the sheet weld size change.

[0017] It should be noted that the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0018] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and does not limit the present application, although the foregoing detailed description of the present application, for those skilled in the art, it still can be modified for the technical solutions recorded in the foregoing embodiments, or for some of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A laser welding pressing mechanism for reducing the weld size variation of sheet parts, comprising an operating frame (1), a fixed box (2), an I-beam (3), a bidirectional screw rod (4), a drive motor (5), a movable block (6), an extension rod (7), the top end of the operating frame (1) is fixed with the fixed box (2), the I-beam (3) is welded between the two groups of transverse inner walls of the fixed box (2), the operating frame (1) is provided with a corresponding upper pressing plate (8) and a lower pressing plate (9) inside, the right side of the fixed box (2) is provided with a drive motor (5), the output end of the drive motor (5) is connected with one end of the bidirectional screw rod (4) through a shaft coupling, the other end of the bidirectional screw rod (4) penetrates the vertical section of the fixed box (2) and the I-beam (3) in sequence and extends to the left side of the I-beam (3), the end of the bidirectional screw rod (4) away from the drive motor (5) is rotatably connected with one group of vertical inner walls of the fixed box (2) through a bearing, the two groups of threaded portions on the outer periphery of the bidirectional screw rod (4) are respectively provided with movable blocks (6), a movable rod (10) is vertically arranged in the fixing port formed in the outer wall of the I-beam (3), the top end of each of the two groups of movable blocks (6) is hingedly connected with an extension rod (7), and the end of the extension rod (7) away from the movable block (6) is hingedly connected with the inner side wall of the I-beam (3); the bottom end of each of the two groups of movable blocks (6) is hingedly connected with a connecting rod (17), the end of the connecting rod (17) away from the movable block (6) is hingedly connected with a hinged block welded on the outer periphery of the movable rod (10), the lower half of the movable rod (10) extends to the inside of the operating frame (1), and the bottom end of the movable rod (10) is fixedly connected with a fixing disc (11) welded on the upper part of the upper pressing plate (8) through a locking bolt, characterized in that: The mobile rod (10) is fixed with a pressing part (12), opposite sides of the pressing part (12) respectively extend with pressing arms, below the pressing arms of the two sides of the pressing part (12) are respectively provided with pressing parts (13), the pressing parts (13) pass through side aprons of the I-shaped plate (3), below the side aprons of the I-shaped plate (3) are hingedly connected with a plurality of tension springs (14), the other end of the tension spring (14) is hingedly connected with a rod of the pressing part (13).

2. The laser welding press mechanism for reducing the weld size variation of thin sheet parts according to claim 1, characterized in that: The bottom end of the pressing part (13) is provided with a pressing block (15), the bottom surface of the pressing block (15) is provided with an elastic pad.

3. The laser welding press mechanism for reducing the weld size variation of thin sheet parts according to claim 2, characterized in that: After the threaded column on the upper part of the pressing block (15) is aligned with the threaded part on the bottom end of the rod of the pressing part (13), the threaded sleeve (16) is used for threadedly fastening the two.

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