Laser welding copper nozzle and laser welding equipment

Abstract

The utility model belongs to the technical field of laser welding, and discloses a laser welding copper nozzle and laser welding equipment, the laser welding copper nozzle comprises a copper sleeve, a copper nozzle body and a fixing assembly, the fixing assembly comprises a first buckle and a second buckle which are detachably connected, and the first buckle and the second buckle are clamped on the outer side of the joint of the copper sleeve and the copper nozzle body. The first boss and the second boss abut against each other and are clamped in the annular groove, so that connection and fixation of the copper sleeve and the copper nozzle body are achieved, a traditional threaded connection mode is replaced, and even if the size of the copper sleeve and the size of the copper nozzle body have certain deviation, connection and fixation of the copper sleeve and the copper nozzle body can be achieved. In the subsequent use process, the replacement frequency of the copper nozzle body is obviously higher than that of the copper sleeve, only the copper nozzle body needs to be replaced every time, the copper sleeve does not need to be replaced together, the replacement frequency of the copper sleeve can be reduced, the service life of the copper sleeve can be effectively prolonged, and the operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser welding technical field especially relates to a laser welding copper mouth and laser welding equipment. BACKGROUND

[0002] Laser welding is a kind of high-efficiency precision welding method using high-energy density laser beam as heat source.Laser welding is one of important aspects of laser material processing technology application.In the battery production process, laser welding is needed, and the end of the welding gun is equipped with a copper nozzle, which is easily affected by high-temperature laser to produce strong adhesive oxidation "welding slag", so regular cleaning and replacement of the copper nozzle are required.

[0003] In the prior art, the laser welding copper nozzle includes a copper nozzle body and a copper sleeve, and the copper nozzle body and the copper sleeve are connected in a threaded manner.The high-temperature welding slag is easy to accumulate and jam at the threaded connection, and when the copper nozzle body is loosened, the copper sleeve and the laser head inside the copper sleeve are easily taken out together, and once the copper nozzle body is replaced, the copper sleeve matched therewith also needs to be replaced synchronously, resulting in increased maintenance cost. SUMMARY

[0004] The utility model aims at providing a laser welding copper nozzle and laser welding equipment, which has strong applicability, can effectively prolong the service life of the copper sleeve and reduce the maintenance cost.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] On the one hand, a laser welding copper nozzle is provided, which includes:

[0007] A copper sleeve is provided, and a first end of the copper sleeve is screwed on a laser welding equipment, and a first boss is annularly arranged on an outer peripheral wall of a second end of the copper sleeve.

[0008] A copper nozzle body is provided, and a second boss is annularly arranged on an outer peripheral wall of a first end of the copper nozzle body, the first end of the copper nozzle body abuts against the second end of the copper sleeve, and a second end of the copper nozzle body is a welding output end.

[0009] A fixing assembly is provided, which is clamped on the outside of the abutting place of the copper sleeve and the copper nozzle body, and the fixing assembly includes a first buckle and a second buckle which are detachably connected, and the side of the first buckle and the second buckle facing each other is provided with an annular groove, and the first boss and the second boss abut against each other and are clamped in the annular groove.

[0010] As an optional scheme of the laser welding copper nozzle, a groove is annularly arranged on the inner peripheral wall of the second end of the copper sleeve, a third boss is protruded on the first end of the copper nozzle body, the third boss abuts in the groove, and the inner diameter of the third boss is the same as the inner diameter of the groove.

[0011] As an alternative to the laser welding copper nozzle, the fixing assembly further comprises a plurality of fasteners; a plurality of through holes are formed on the first buckle, a plurality of fastening holes are formed on the second buckle, the fasteners, the through holes and the fastening holes are one-to-one corresponding, and the fasteners are arranged in the corresponding through holes and fastening holes.

[0012] As an alternative to the laser welding copper nozzle, the first buckle is provided with a plurality of countersunk holes at the end away from the second buckle, and the plurality of countersunk holes and the plurality of through holes are one-to-one corresponding and communicated with each other, and the end of the fastener is arranged in the countersunk hole.

[0013] As an alternative to the laser welding copper nozzle, the fastening hole is provided with a sealing member away from the through hole.

[0014] As an alternative to the laser welding copper nozzle, the annular groove is provided with a rounded corner at both ends along the axis direction.

[0015] As an alternative to the laser welding copper nozzle, the first boss and the second boss are provided with a chamfer on the side away from each other.

[0016] As an alternative to the laser welding copper nozzle, the diameter of the first end of the copper sleeve is greater than the diameter of the second end of the copper sleeve, and the diameter of the first end of the copper nozzle body is greater than the diameter of the second end of the copper nozzle body.

[0017] As an alternative to the laser welding copper nozzle, the wall thickness of the copper sleeve and the copper nozzle body is uniform and consistent, and is greater than or equal to 0.5mm.

[0018] In another aspect, a laser welding device is provided, comprising the laser welding copper nozzle described in any of the above.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model provides a kind of laser welding copper nozzle, first buckle and second buckle are clamped at the outside of the connecting place of copper sleeve and copper nozzle body, first boss on copper sleeve and second boss on copper nozzle body are mutually abutted, and are all clamped in annular groove, to realize the connection and fixation of copper sleeve and copper nozzle body, replace the connection mode of traditional screw connection, even if the size of copper sleeve and copper nozzle body exists certain deviation, the connection and fixation of two can be realized. In subsequent use process, the frequency of replacement of copper nozzle body is significantly higher than the replacement frequency of copper sleeve, and only copper nozzle body needs to be replaced each time, without replacing copper sleeve, reduce the replacement times of copper sleeve, in turn can effectively prolong the service life of copper sleeve, reduce operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall schematic diagram of the laser welding copper nozzle provided by the embodiment of the specific implementation manner of the utility model.

[0022] Figure 2 is an exploded view of the laser-welded copper nozzle provided by the embodiment of the specific implementation manner of the utility model;

[0023] Figure 3 is a sectional view of the laser-welded copper nozzle provided by the embodiment of the specific implementation manner of the utility model;

[0024] Figure 4 is a front view of the copper sleeve provided by the embodiment of the specific implementation manner of the utility model;

[0025] Figure 5 is a front view of the copper nozzle body provided by the embodiment of the specific implementation manner of the utility model;

[0026] Figure 6 is a structural schematic view of the second buckle provided by the embodiment of the specific implementation manner of the utility model.

[0027] In the drawings:

[0028] 1, copper sleeve; 11, first boss; 12, groove;

[0029] 2, copper nozzle body; 21, second boss; 22, third boss;

[0030] 3, fixing assembly; 31, first buckle; 310, annular groove; 311, through hole; 312, counterbore; 32, second buckle; 321, fastening hole. Specific implementation manner

[0031] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0032] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the present utility model, unless otherwise expressly provided and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the direct contact of the first and second features, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the direct contact of the first and second features, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the present embodiment, the terms "upper", "lower", "right", "left", "horizontal", "vertical", "orientation" or "position relationship" are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0035] The technical scheme of the present utility model is further illustrated below in conjunction with the drawings and through specific embodiments.

[0036] As shown in Figures 1 to 6 The present embodiment provides a laser welding copper nozzle, which comprises a copper sleeve 1, a copper nozzle body 2 and a fixing assembly 3. The first end of the copper sleeve 1 is screwed on a laser welding device, and a first boss 11 is annularly arranged on the outer peripheral wall of the second end; the outer peripheral wall of the first end of the copper nozzle body 2 is annularly arranged with a second boss 21, and the second end is a welding output end. The copper sleeve 1 and the copper nozzle body 2 are both provided with a passage, which is used for allowing laser and protective gas for welding to pass through. The first end of the copper nozzle body 2 abuts against the second end of the copper sleeve 1, and the fixing assembly 3 is clamped outside the abutting position of the copper sleeve 1 and the copper nozzle body 2. The fixing assembly 3 comprises a first buckle 31 and a second buckle 32 which are detachably connected, and the side of the first buckle 31 and the second buckle 32 facing each other is provided with an annular groove 310, the first boss 11 and the second boss 21 abut against each other and are both clamped in the annular groove 310. The clamping and fixing of the copper sleeve 1 and the copper nozzle body 2 are realized through the clamping action of the first buckle 31 and the second buckle 32, instead of the traditional threaded connection mode, so that even if there is a slight deviation in the size of the first end of the copper nozzle body 2 and the second end of the copper sleeve 1, the clamping and fixing between them can also be realized. In addition, in the subsequent use process, the replacement frequency of the copper nozzle body 2 is obviously higher than that of the copper sleeve 1, and only the copper nozzle body 2 needs to be replaced each time, without the need to replace the copper sleeve 1, thereby effectively prolonging the service life of the copper sleeve 1.

[0037] Specifically, as Figure 2As shown, the inner wall of the first end of the copper sleeve 1 is provided with threads, so that the copper sleeve 1 can be screwed on the laser welding equipment, facilitating the installation and removal of the copper sleeve 1.

[0038] Optionally, referring to Figure 3 , a groove 12 is arranged around the inner peripheral wall of the second end of the copper sleeve 1, and a third boss 22 is protrudingly arranged at the first end of the copper nozzle body 2, the third boss 22 abuts in the groove 12, and the inner diameter of the third boss 22 is the same as the inner diameter of the groove 12. The above arrangement can improve the stability and accuracy of the abutment between the copper sleeve 1 and the copper nozzle body 2.

[0039] Optionally, the fixing assembly 3 further comprises a plurality of fasteners (not shown in the figure), such as Figure 2 As shown, a plurality of through holes 311 are formed in the first buckle 31, and a plurality of fastening holes 321 are formed in the second buckle 32, the fasteners, the through holes 311 and the fastening holes 321 are one-to-one corresponding, the fasteners are arranged in the corresponding through holes 311 and fastening holes 321, so as to realize the detachable connection of the first buckle 31 and the second buckle 32. When there is a certain deviation in the size of the copper sleeve 1 and the copper nozzle body 2, the tightness position of the fastener can be adjusted to ensure the connection and fixation of the copper sleeve 1 and the copper nozzle body 2.

[0040] Specifically, the fastener is a bolt commonly used in the art, which is convenient to obtain and low in cost; the fastening hole 321 is a threaded hole, which is convenient to process.

[0041] Further, in combination with Figure 1 , a plurality of countersunk holes 312 are formed in the end of the first buckle 31 away from the second buckle 32, the plurality of countersunk holes 312 and the plurality of through holes 311 are one-to-one corresponding and communicate with each other, and the end of the fastener is arranged in the countersunk hole 312. The arrangement of the countersunk hole 312 can bury the head of the fastener in the interior of the first buckle 31, without affecting the appearance and the overall external structure, and at the same time, the fastener is protected to a certain extent.

[0042] Optionally, a sealing element (not shown in the figure) is arranged on the side of the fastening hole 321 away from the through hole 311, so as to block the gap between the fastener and the fastening hole 321, preventing the residues or other impurities in the operation site from blocking the fastening hole 321.

[0043] Exemplarily, the sealing element is a rubber plug.

[0044] Optionally, referring to Figure 4 and Figure 5 , the two ends of the annular groove 310 along the axis direction are provided with rounded corners, which can improve the structural strength of the annular groove 310, avoid stress concentration, and at the same time, make the structure more beautiful.

[0045] Optionally, the first boss 11 and the second boss 21 are provided with chamfers on the sides away from each other. The chamfers can improve the stability of the first boss 11 and the second boss 21 clamped in the annular groove 310, thereby ensuring the stable connection of the copper sleeve 1 and the copper nozzle body 2.

[0046] Optionally, the diameter of the first end of the copper sleeve 1 is greater than the diameter of the second end of the copper sleeve 1, and the diameter of the first end of the copper nozzle body 2 is greater than the diameter of the second end of the copper nozzle body 2, that is, the copper sleeve 1 and the copper nozzle body 2 are both designed in a tapered shape. Correspondingly, the channels formed in the copper sleeve 1 and the copper nozzle body 2 are also designed in a tapered shape, which can well guide the flow of the protective gas and increase the flow rate, thereby enabling the protective gas to flow out of the outlets of the channels at a faster flow rate and be released to the position to be welded, so as to improve the protective effect of the protective gas on the welding position.

[0047] Optionally, the wall thickness of the copper sleeve 1 and the copper nozzle body 2 is uniform and consistent, and is greater than or equal to 0.5 mm, so as to ensure that the copper sleeve 1 and the copper nozzle body 2 have good strength.

[0048] In addition, the embodiment also provides a laser welding device comprising the laser welding copper nozzle, which has all the beneficial effects of the laser welding copper nozzle and will not be described in detail here.

[0049] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A laser welded copper nozzle characterized by, The application relates to a laser welding copper nozzle, which comprises the following parts: a copper sleeve (1), the first end of which is screwed on a laser welding device, and a first boss (11) is arranged on the outer peripheral wall of the second end; a copper nozzle body (2), a second boss (21) is arranged on the outer peripheral wall of the first end, the first end of the copper nozzle body (2) abuts against the second end of the copper sleeve (1), and the second end of the copper nozzle body (2) is a welding output end; a fixing assembly (3) which is clamped outside the abutting position of the copper sleeve (1) and the copper nozzle body (2), the fixing assembly (3) comprises a first buckle (31) and a second buckle (32) which are detachably connected, and the side of the first buckle (31) and the second buckle (32) which faces each other is provided with an annular groove (310), the first boss (11) and the second boss (21) abut against each other and are clamped in the annular groove (310).

2. The laser welded copper tip of claim 1, wherein, A groove (12) is arranged on the inner peripheral wall of the second end of the copper sleeve (1), a third boss (22) is arranged on the first end of the copper nozzle body (2), the third boss (22) abuts in the groove (12), and the inner diameter of the third boss (22) is the same as the inner diameter of the groove (12).

3. The laser welded copper tip of claim 1, wherein, The fixing assembly (3) further comprises a plurality of fasteners, a plurality of through holes (311) are formed in the first buckle (31), a plurality of fastening holes (321) are formed in the second buckle (32), the fasteners, the through holes (311) and the fastening holes (321) are one-to-one corresponding, and the fasteners are arranged in the corresponding through holes (311) and fastening holes (321).

4. The laser welded copper tip of claim 3, wherein, A plurality of countersunk holes (312) are formed in the end of the first buckle (31) which is away from the second buckle (32), the plurality of countersunk holes (312) and the plurality of through holes (311) are one-to-one corresponding and communicate with each other, and the end of the fastener is arranged in the countersunk hole (312).

5. The laser welded copper tip of claim 3, wherein, A sealing element is arranged on the side of the fastening hole (321) which is away from the through hole (311).

6. The laser welded copper tip according to any one of claims 1-5, wherein, The two ends of the annular groove (310) in the axial direction are both provided with a rounded corner.

7. The laser welded copper tip of any one of claims 1-5, wherein, The side of the first boss (11) and the second boss (21) which is away from each other is provided with a chamfer.

8. The laser welded copper tip of any one of claims 1-5, wherein, The diameter of the first end of the copper sleeve (1) is larger than the diameter of the second end of the copper sleeve (1), and the diameter of the first end of the copper nozzle body (2) is larger than the diameter of the second end of the copper nozzle body (2).

9. The laser welded copper tip of any one of claims 1-5, wherein, The wall thicknesses of the copper sleeve (1) and the copper nozzle body (2) are uniform and are greater than or equal to 0.5 mm.

10. A laser welding apparatus characterized by comprising: The application further relates to a laser welding copper nozzle comprising any one of the laser welding copper nozzles according to claims 1-9.

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