CN216607624U - Welding nozzle, welding fixture and welding machine table - Google Patents
Welding nozzle, welding fixture and welding machine table Download PDFInfo
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- CN216607624U CN216607624U CN202122893717.1U CN202122893717U CN216607624U CN 216607624 U CN216607624 U CN 216607624U CN 202122893717 U CN202122893717 U CN 202122893717U CN 216607624 U CN216607624 U CN 216607624U
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Abstract
The utility model relates to the field of laser welding production, in particular to a welding nozzle, a welding fixture and a welding machine table. A welding tip having a light-passing hole for passing a laser beam therethrough, comprising: the end face of one end, used for laser beam ejection, of the welding nozzle is provided with a vent groove extending along the circumferential direction of the light through hole, the vent groove is communicated with the light through hole, and the side wall of the welding nozzle is provided with an air inlet communicated with the vent groove. According to the welding nozzle, the laser beam passes through the light through hole, when shielding gas needs to be introduced into a welding piece in the welding process, the shielding gas enters the air channel through the air inlet communicated with the air channel and reaches the end face, used for emitting the laser beam, of the welding nozzle, the air channel extending in the circumferential direction of the light through hole is designed to provide larger-area shielding gas for a molten pool in welding, the shielding gas can be rapidly and uniformly distributed on the surface of the welding piece, so that a laser heat source in the molten pool meets the welding standard in welding, and the welding quality is improved.
Description
Technical Field
The utility model relates to the field of laser welding production, in particular to a welding nozzle, a welding fixture and a welding machine table.
Background
With the arrival of the low-carbon era, the demand of users on batteries is continuously increased, and higher requirements are put forward on the battery core welding technology. In the production process of the battery, the battery core module adopts shielding gas welding in the welding process to improve the surface smoothness of a molten pool, splash, reduce welding explosion and improve the yield of products. In the existing welding operation, a manufacturer uses a copper nozzle to compress a connecting sheet and then welds the connecting sheet, and protective gas is blown into the copper nozzle during welding.
However, in the copper nozzle structure in the prior art, the shielding gas cannot rapidly and uniformly reach the surface of the part to be welded, and stable and uniform shielding gas cannot be provided for welding, so that the quality of a molten pool during welding is affected, and a poor battery finished product is easily generated.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the utility model is to overcome the defect that stable and uniform shielding gas cannot be provided for the surface of a to-be-welded piece when the copper nozzle blows the shielding gas in the prior art, so that the welding nozzle, the welding fixture and the welding machine table are provided.
In order to solve the above problems, the present invention provides a welding tip, including:
the end face of one end, used for laser beam ejection, of the welding nozzle is provided with a vent groove extending along the circumferential direction of the light through hole, the vent groove is communicated with the light through hole, and the side wall of the welding nozzle is provided with an air inlet communicated with the vent groove.
Optionally, the vent groove has a cross section gradually decreasing along the emitting direction of the laser beam.
Optionally, the first body and the second body, the second body is sleeved under the first body, and the side wall of the first body and the side wall of the second body form the vent groove.
Optionally, an end face of the welding tip at an end for emitting the laser beam includes: the first end surface is positioned at the side end of the ventilation groove corresponding to the laser beam ejection end far away from the welding nozzle, and the second end surface is positioned at the side end of the ventilation groove corresponding to the laser beam ejection end facing the welding nozzle; the first end face is located above the second end face along a line where the laser beam is located.
Optionally, the method further comprises: and the mounting block is connected with the side wall of the welding nozzle and used for mounting a damping piece.
Optionally, an air inlet used for communicating with an air inlet interface is arranged on the mounting block, and an air inlet channel communicated with the vent groove is arranged in the mounting block.
There is also provided a welding jig including: the welding nozzle is connected below the top plate.
Optionally, a plurality of damping pieces are installed on the installation block of the welding nozzle, and the welding nozzle is connected with the top plate through the damping pieces.
Optionally, the method further comprises: the insulating plate is connected below the top plate, and the lower surface of the insulating plate is used for being connected with the welding nozzle.
Still provide a welding machine, including foretell welding jig.
The technical scheme of the utility model has the following advantages:
1. the welding nozzle provided by the utility model is provided with a light through hole for laser beams to pass through, the end face of one end of the welding nozzle used for laser beam emission is provided with a vent groove extending along the circumferential direction of the through hole, the vent groove is communicated with the light through hole, and the side wall of the welding nozzle is provided with an air inlet communicated with the vent groove. Lead to through the laser beam in the unthreaded hole, treat that the welding piece need let in the shielding gas in welding process, the shielding gas gets into the air channel through the air inlet, reach the one end terminal surface that is used for the laser beam to jet out to the welding mouth through the air channel, lead to the design of the air channel of the circumference extension of unthreaded hole, make the shielding gas stable, even entering welding area all around from the weldment work face, the molten bath during welding provides the shielding gas of bigger area for the molten bath during welding, so that laser heat source molten bath accord with welding standard in the welding, promote welding quality.
2. According to the welding nozzle provided by the utility model, the cross section of the vent groove is gradually reduced along the ejection direction of the laser beam. Even if the vent groove is annular, the diameter of the sectional area of the vent groove is gradually reduced to form a conical structure, and the conical design enables the gas reaching the surface of the part to be welded to be concentrated more, so that other gas on the surface of the part to be welded can be rapidly cleaned.
3. The welding nozzle provided by the utility model comprises a first body and a second body, wherein the second body is sleeved below the first body, and a vent groove is formed between the side wall of the first body and the side wall of the second body. The form of establishing each other cover through two bodies constitutes middle air channel structure, compares in integrated into one piece's structure be convenient for more the manufacturing.
4. The welding nozzle provided by the utility model has the advantages that the end face, used for laser beam ejection, of the welding nozzle comprises a first end face and a second end face, the first end face is positioned at the side end, corresponding to the laser beam ejection end, of the air vent groove far away from the welding nozzle, the second end face is positioned at the side end, corresponding to the laser beam ejection end, of the air vent groove far away from the welding nozzle, and the first end face is positioned above the second end face along the straight line where the laser beam is positioned. The height difference formed by the two end surfaces forms an outlet of the vent groove, so that the shielding gas is gathered towards the surface of the part to be welded through the outlet formed by the height difference, and the shielding gas is gathered from the periphery towards the central area to be welded.
5. The welding nozzle further comprises an installation block, wherein the installation block is used for installing a damping piece, so that the welding nozzle can be connected with the installation plate through the damping piece; in addition, when adopting two body covers to establish and constitute the welding mouth, the installation piece formability is on a body to form annular draw-in groove at the center, in order to carry out the joint to another body, thereby guarantee to form the air channel structure between two bodies.
6. The welding fixture comprises a top plate and welding nozzles connected below the top plate, wherein the top plate is used for fixing the welding fixture on a laser machine table, through holes coaxial with laser holes of the welding nozzles are formed in the top plate and used for penetrating laser, the number of the through holes corresponds to the number of the welding nozzles, and stress of the top plate is transmitted to the welding nozzles so that the end face of one end of the laser nozzle used for emitting laser beams is abutted to the surface of a workpiece to be welded.
7. The welding machine table provided by the utility model comprises the welding fixture, so that the welding machine table has the advantages of any one of the welding fixtures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an exploded view of a welding fixture provided in accordance with the present invention;
FIG. 2 is a schematic view of a welding tip according to the present invention;
FIG. 3 is a schematic structural view of a cross-section of a welding nozzle provided in accordance with the present invention;
FIG. 4 is a schematic structural view of a cross-section of a welding nozzle and air inlet interface connection provided in accordance with the present invention.
Description of reference numerals: 1. a top plate; 2. an insulating plate; 3. a damping member; 4. a first body; 5. a second body; 6. an air intake passage; 7. mounting blocks; 8. a vent channel; 9. a light through hole; 10. an ejection end; 11. an air inlet; 12. an air inlet interface; 13. a first end face; 14. a second end surface.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, a specific embodiment of a welding fixture provided in this embodiment includes: a top plate 1, an insulating plate 2 and a welding nozzle. The top plate 1 is used for fixing the welding fixture on a laser machine table, and the insulating plate 2 is connected below the top plate 1 and on the lower surface of the insulating plate 2, and is connected with the welding nozzle. The welding nozzle is provided with a light through hole 9 for laser beams to pass through, the top plate 1 and the insulating plate 2 are provided with through holes which are in one-to-one correspondence with the light through hole 9 and are used for laser passing through, and welding lasers can sequentially pass through the top plate 1, the insulating plate 2 and the welding nozzle and finally reach a welding area.
As shown in fig. 1, in the welding jig provided in this embodiment, a plurality of welding nozzles are arranged below the top plate 1, and the plurality of welding nozzles are arranged in a row, so that the welding jig can position a plurality of welding spots at the same time, and the laser can perform sequential welding. Examples additionally, as an alternative, the welding nozzles under the top plate 1 may also be arranged in two or even more rows.
As shown in fig. 2 and 3, in the welding jig provided in the present embodiment, the welding tip of the embodiment includes: the laser module comprises a first body 4 and a second body 5, wherein the first body 4 and the second body 5 are respectively provided with a light through hole 9 for laser beams to pass through. The part of the first body 4 is sleeved in the second body 5, so that a vent groove 8 is formed between the outer wall of the first body 4 and the inner wall of the second body 5, and the vent groove 8 is communicated with the light through hole 9. The side wall of the second body is provided with an air inlet 11 communicating with the vent groove 8, so that the shielding gas can be supplied from the air inlet 11 and then conveyed into the light passing hole 9 through the vent groove 8, thereby gas-shielding the welding area.
As shown in fig. 2, in the welding fixture provided in this embodiment, since the first body 4 and the second body 5 of the welding nozzle are both circular copper nozzles, the vent groove 8 formed between the outer wall of the first body 4 and the inner wall of the second body 5 is an annular structure, and the shielding gas can stably and uniformly enter the welding area from the periphery of the welding working surface through the design of the annular structure. In addition, as an alternative embodiment, the shape of the first body 4 and the second body 5 may be other than circular, such as square. The first body 4 and the second body 5 of the welding nozzle can also be of an integrally formed construction, the vent channel 8 being formed in the welding nozzle by means of material removal.
As shown in fig. 2, in the welding jig provided in the present embodiment, the second body 5 of the welding nozzle is formed with the mounting blocks 7, and the mounting blocks 7 extend toward two symmetrical sides on the outer wall of the second body 5. The installation piece 7 is connected with damping piece 3, and is concrete, damping piece 3 is telescopic compression leg and spring, the compression leg sets up with the spring coaxial line, and the compression leg will receive pressure transmission for the spring. The welding nozzle is used for connecting the top plate 1 above through the damping piece 3, and the damping piece 3 is used for playing a role of buffering after the welding nozzle is contacted with a welding surface. In addition, as an alternative embodiment, the damping member 3 may be other damping structures, such as a cylinder member, a hydraulic rod, a rubber pad, and the like. The mounting block 7 may be integrally formed on the second body 5, or may be mounted on the second body 5 by welding, fastening, or the like.
As shown in fig. 2 and 3, in the welding fixture provided in this embodiment, the mounting block 7 on the second body 5 of the welding nozzle has an annular clamping groove facing the first body 4, and the first body 4 is matched with the second body 5 through the annular clamping groove, so as to ensure that a vent groove structure is formed between the two bodies, and to close an upper end gap of the vent groove.
As shown in fig. 3 and 4, in the welding jig provided in this embodiment, one end of the welding nozzle for emitting the laser beam is an emission end 10, the vent groove 8 is an annular structure extending along a circumferential direction of a light transmission hole 9 on an end surface of the emission end 10, and the end surface of the emission end 10 includes: a first end surface 13 and a second end surface 14, wherein the first end surface 13 is located at the side end of the ventilation slot 8 corresponding to the laser beam emitting end 10 far away from the welding nozzle, the second end surface 14 is located at the side end of the ventilation slot 8 corresponding to the laser beam emitting end 10 facing the welding nozzle, and the first end surface 13 is located above the second end surface 14 along the straight line where the laser beam is located, so that an outlet is formed through the height difference formed between the two end surfaces, and the ventilation slot 8 is communicated with the light through hole 9; further, an air inlet 11 communicating with the vent groove 8 is provided in the side wall of the welding nozzle. The shielding gas entering from the gas inlet 11 reaches the light through hole 9 through the gas groove 8, so that gas protection is performed on the welding area, the shielding gas is gathered from the periphery towards the central area to be welded, and the shielding gas can enter the welding area more stably and uniformly. In addition, as an alternative embodiment, the communication between the ventilation groove 8 and the light through hole 9 may be that a plurality of through holes are uniformly arranged along the circumferential direction on the side wall of the ventilation groove 8 spaced from the light through hole 9.
As shown in fig. 3 and 4, in the welding jig provided in this embodiment, the cross-sectional diameter of the vent groove 8 along the emitting direction of the laser beam is gradually reduced to form a cone shape, and the design of the cone shape enables the shielding gas to reach the surface of the to-be-welded piece along the cone shape structure, so as to provide more shielding gas for the to-be-welded piece. In the welding process, the protective gas enters the vent groove 8 through the gas inlet 11 of the welding nozzle, and then rapidly reaches the surface of a to-be-welded part through the vent groove 8 along the annular structure, and the annular structure provides a stable and uniform protective gas layer for the laser heat source in the welding process.
As shown in fig. 3 and 4, in the welding jig of the present embodiment, an air inlet passage 6 is provided inside one side of the mounting block 7, one end of the air inlet passage 6 communicates with the vent groove 8, and the other end of the air inlet passage 6 forms an air inlet 11 for shielding gas. The gas inlet 11 can be fixedly connected with the gas inlet port 12 to receive the shielding gas, so that the shielding gas enters the vent groove 8 from the gas inlet port 12 along the gas inlet channel. In addition, as an alternative embodiment, the periphery of the outer wall of the second body 5 can be further provided with symmetrical mounting blocks 7, the number of the air inlet channels 6 can be two or even more, and the air inlet interface 12 can be controlled by the regulating valve to realize accurate control.
The embodiment also provides a welding machine, which comprises the welding fixture, wherein the welding machine adopts the welding fixture to perform laser welding.
In the specific welding process, as shown in fig. 1, after the top plate 1 is subjected to pressure, the pressure is transmitted to the damping member 3 through the insulating plate 2, so that the damping member 3 moves to drive the welding nozzle to move towards the to-be-welded part until the end surface of one end of the welding nozzle, which is emitted along the laser beam, is in contact with the surface of the to-be-welded part. And starting a control valve for controlling the protective gas, wherein the protective gas reaches the vent groove 8 through the gas inlet channel 6 communicated with the gas inlet port 12, and other gas in the vent groove 8 is gradually replaced by the protective gas until the vent groove 8 is filled with the protective gas to move towards the surface of the workpiece to be welded. After the shielding gas is filled in the surface of the part to be welded, an operator turns on the laser to generate laser to the surface of the part to be welded so as to weld. The welding nozzle and the welding fixture with the same provided by the utility model enable shielding gas to rapidly reach the surface of a workpiece to be welded in a circular manner through the vent groove 8, and meanwhile, the circular vent groove 8 is designed to provide a large-area shielding gas layer for a molten pool during welding so as to form a stable and uniform shielding gas layer and effectively improve the surface finish and splashing of the molten pool.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the spirit or scope of the utility model.
Claims (10)
1. The welding nozzle is provided with a light through hole (9) for laser beams to pass through, and is characterized in that a vent groove (8) extending along the circumferential direction of the light through hole (9) is formed in the end face of one end, used for laser beam emission, of the welding nozzle, the vent groove (8) is communicated with the light through hole (9), and an air inlet (11) communicated with the vent groove (8) is formed in the side wall of the welding nozzle.
2. Welding nozzle according to claim 1, characterized in that the vent channel (8) has a cross section that is gradually smaller along the direction of emission of the laser beam (8).
3. The welding nozzle as set forth in claim 1, comprising: the air duct comprises a first body (4) and a second body (5), wherein the second body (5) is sleeved below the first body (4), and the side wall of the first body (4) and the side wall of the second body (5) form the air duct (8).
4. The welding nozzle as defined in claim 1, wherein an end surface of an end of the welding nozzle for laser beam emission comprises: a first end face (13) and a second end face (14), wherein the first end face (13) is positioned at the side end of the ventilation groove (8) corresponding to the laser beam emission end (10) far away from the welding nozzle, and the second end face (14) is positioned at the side end of the ventilation groove (8) corresponding to the laser beam emission end (10) facing the welding nozzle; the first end face (13) is located above the second end face (14) along a line on which the laser beam is located.
5. The welding nozzle as defined in claim 1, further comprising: the mounting block (7) is connected with the side wall of the welding nozzle, and the mounting block (7) is used for mounting the damping piece (3).
6. A welding nozzle according to claim 5, characterized in that the mounting block (7) is provided with an air inlet (11) for communicating with an air inlet interface (12), and the mounting block (7) is provided with an air inlet channel (6) communicating with the vent groove (8).
7. A welding fixture, comprising: top plate (1) and a welding nozzle according to any one of claims 1-6 attached below said top plate (1).
8. The welding fixture according to claim 7, characterized in that a plurality of damping members (3) are mounted on the mounting block (7) of the welding nozzle, and the welding nozzle is connected with the top plate (1) through the damping members (3).
9. The welding fixture of claim 7, further comprising: the insulating plate (2) is connected below the top plate (1), and the lower surface of the insulating plate (2) is used for being connected with the welding nozzle.
10. A welding machine comprising the welding jig of any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122893717.1U CN216607624U (en) | 2021-11-23 | 2021-11-23 | Welding nozzle, welding fixture and welding machine table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122893717.1U CN216607624U (en) | 2021-11-23 | 2021-11-23 | Welding nozzle, welding fixture and welding machine table |
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| Publication Number | Publication Date |
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| CN216607624U true CN216607624U (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122893717.1U Active CN216607624U (en) | 2021-11-23 | 2021-11-23 | Welding nozzle, welding fixture and welding machine table |
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| CN (1) | CN216607624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117697250A (en) * | 2023-12-28 | 2024-03-15 | 珠海科创储能科技有限公司 | Welding device |
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2021
- 2021-11-23 CN CN202122893717.1U patent/CN216607624U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117697250A (en) * | 2023-12-28 | 2024-03-15 | 珠海科创储能科技有限公司 | Welding device |
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