Laser welding device

Abstract

The utility model discloses a laser welding device which comprises a support and a welding head which are connected together, and blocking pieces are arranged on the two sides of the welding head. The two blocking pieces form a semi-surrounding structure around the welding head. And the separation blade is connected with the support in a height-adjustable manner. The blocking pieces are additionally arranged on the two sides of the welding head, the roll core and the welding head are separated, and welding slag can be prevented from splashing to the roll core. And shielding gas needs to be synchronously provided during laser welding, and the gas flow can be more concentrated near a welding head through the blocking piece. And the blocking piece and the welding head support are fixed through the locking piece, so that the blocking piece is convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery production, in particular to a laser welding device. Background Art

[0002] During the research and development, trial production, and production of lithium batteries, the two-sided core and the cover plate need to be laser welded together. This process is called cover plate welding. Welding slag will be generated during laser welding, but the welding device currently used does not have a dust shield structure. After welding is completed, the core is moved to the next station for dust removal, rather than dust removal during welding. Because there is no dust shield structure and the welding and dust removal functions are not run synchronously, the welding slag is easy to splash around and difficult to control, and there is a risk of the welding slag damaging the core; after welding dust removal, tape will be attached to the welding area to limit the movement of welding slag, but there is still a risk of welding slag piercing the tape and causing a short circuit. Therefore, providing a safe, simple, low-cost, and adjustable laser welding device has become the research direction of this utility model. Utility Model Content

[0003] The utility model aims to provide a laser welding device, which forms a semi-enclosed structure by arranging baffles on both sides of the welding head to separate the winding core from the welding head and prevent welding slag from splashing onto the winding core.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The utility model discloses a laser welding device, comprising a support and a welding head connected together, wherein baffles are provided on both sides of the welding head; the two baffles form a semi-enclosed structure around the welding head; and the baffles are connected to the support in an adjustable height.

[0006] A further solution: a first anti-interference groove is provided at the bottom of the baffle.

[0007] A further solution is that a second anti-interference groove is provided at the bottom of the baffle.

[0008] A further solution: it also includes a locking plate connected to the support; a first longitudinal waist hole is opened on the upper part of the blocking plate, and a second waist hole corresponding to the first waist hole is opened on the locking plate; the first waist hole and the second waist hole are connected by fasteners.

[0009] A further solution is that the two baffles are parallel to each other, and the bottom ends of the baffles abut against the welding piece.

[0010] A further solution is that the support includes an end connected to the welding head, the baffle is connected to both sides of the end, and the inner side of the baffle has an avoidance area to avoid the protruding structure of the end.

[0011] A further solution: the fastener is an adjusting bolt.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This utility model adds baffles on either side of the welding head to separate the coil from the welding head, preventing welding slag from splashing onto the core. Laser welding requires simultaneous provision of shielding gas, and the baffles help to concentrate the gas flow near the welding head. A locking plate secures the baffle to the welding head support, facilitating its removal. A corresponding anti-interference groove is provided at the bottom of the baffle to prevent interference with the tabs and cover plate retaining bracket. The upper portion of the baffle is connected to the locking plate via an adjusting bolt. Adjusting the position of the adjusting bolt within the waist hole allows the height of the baffle to be adjusted, providing high adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the main view of the utility model (including the welded parts and the winding core);

[0015] Figure 2 for Figure 1 Side view of

[0016] Figure 3 This is a three-dimensional diagram of the utility model (including welded parts);

[0017] Figure 4 This is a schematic structural diagram of the baffle in the utility model;

[0018] Figure 5 This is a schematic structural diagram of the locking piece in the utility model;

[0019] In the figure: 1-welding head, 2-support, 21-end, 3-blocking plate, 31-first anti-interference groove, 32-second anti-interference groove, 33-first waist hole, 34-avoidance area, 4-locking plate, 41-second waist hole, 5-adjusting bolt, 6-cover plate, 61-cover plate body, 62-stop frame, 7-winding core, 8-ear. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0022] See also Figure 1-5 The present invention discloses a laser welding device comprising a support 2 and a welding head 1 disposed below the support 2. Baffles 3 are provided on either side of the welding head 1; the baffles 3 are height-adjustably connected to the support 2. When welding a cover plate, the workpiece (in this embodiment, the cover plate 6) is placed between two sets of winding cores 7. The welding head 1 is then aligned with the cover plate from top to bottom to perform laser welding. During this process, the semi-enclosed structure formed by the two baffles 3 prevents most of the welding slag from splattering outward. Furthermore, the baffles allow the welding shielding gas to be more concentrated near the welding head 1.

[0023] Furthermore, the bottom of the baffle 3 is provided with a first anti-interference groove 31 and a second anti-interference groove 32. The battery cover 6 comprises a cover body 61 and a retaining bracket 62 mounted on one end of the cover body 61. The retaining bracket 62 secures and supports the internal components of the battery. The first anti-interference groove 31 is designed to avoid the raised structure on the retaining bracket 62, while the second anti-interference groove 32 is designed to avoid the protruding tab 8. The position and shape of the first and second anti-interference grooves 31, 32 can be flexibly adjusted and replaced according to the size and model of the retaining bracket.

[0024] Furthermore, a locking plate 4 is connected to the support 2 and is used to secure the baffle 3, facilitating removal of the baffle 3. A first longitudinal slot 33 is defined in the upper portion of the baffle 3, and a second slot 41 is defined in the locking plate 4, corresponding to the first slot 33. The first slot 33 and the second slot 41 are connected by a fastener 5. The height of the baffle 3 can be adjusted by adjusting the position of the fastener 5 within the slot. The upper end of the locking plate 4 is fixedly connected to the support via a fastening bolt.

[0025] Furthermore, the fastener 5 is a height adjustment bolt.

[0026] Furthermore, the two baffles 3 are parallel to each other, forming a semi-enclosed structure centered on the welding head 1, and the bottom end of the baffle 3 abuts against the cover plate 6 to prevent welding slag from splashing.

[0027] Furthermore, the support 2 includes an end 21 connected to the welding head 1, and a baffle 3 is connected to both sides of the end 21. The inner side of the baffle 3 has an escape area 34 to avoid the protruding structure of the end 21. The escape area 34 is milled to prevent interference with the protruding structure on the support 2 and hindering the upward and downward movement.

[0028] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0029] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A laser welding device, characterized in that: It comprises a support (2) and a welding head (1) connected together, wherein baffles (3) are provided on both sides of the welding head (1); the two baffles (3) form a semi-enclosed structure around the welding head (1); and the baffles (3) are connected to the support (2) in an adjustable height.

2. The laser welding device according to claim 1, characterized in that A first anti-interference groove (31) is provided at the bottom of the baffle (3).

3. The laser welding device according to claim 1, characterized in that A second anti-interference groove (32) is provided at the bottom of the baffle (3).

4. The laser welding device according to claim 1, characterized in that The invention also includes a locking plate (4) connected to the support (2); a longitudinal first waist hole (33) is formed on the upper portion of the blocking plate (3); a second waist hole (41) corresponding to the first waist hole (33) is formed on the locking plate (4); the first waist hole (33) and the second waist hole (41) are connected by a fastener (5).

5. The laser welding device according to claim 1, characterized in that: The two baffles (3) are parallel to each other, and the bottom ends of the baffles (3) abut against the welding piece.

6. The laser welding device according to claim 1, characterized in that The support (2) includes an end (21) connected to the welding head (1), the baffle (3) is connected to both sides of the end (21), and the inner side of the baffle (3) has an avoidance area (34) to avoid the protruding structure of the end (21).

7. The laser welding device according to claim 4, characterized in that: The fastener (5) is an adjusting bolt.

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