Shielding gas adjusting device for laser electric welding

Abstract

The utility model relates to the field of battery box production equipment, in particular to a shielding gas angle adjusting device for laser electric welding. The laser electric welding device comprises a laser electric welding head, a welding head shell, a laser generator, an upper sleeving shell, a lower sleeving shell, a movable lantern ring, a mounting piece, an adjusting roller, an upper roller, a lower roller and an arc-shaped sliding rail. The laser electric welding head comprises a welding head shell and a laser generator, the laser generator is arranged in the welding head shell, the upper sleeving shell is fixedly connected to the outer surface of the laser electric welding head in a sleeving mode, the lower sleeving shell is located below the upper sleeving shell, the upper sleeving shell and the lower sleeving shell are each provided with an annular groove, and the upper sleeving shell and the lower sleeving shell are each provided with an annular groove. The installation part is fixedly connected with a ring body of the movable lantern ring, the adjusting idler wheels comprise the upper idler wheels and the lower idler wheels, the upper idler wheels are movably installed on one side of the installation part in an arc-shaped arrangement mode, the lower idler wheels are located below the upper idler wheels, and the arc-shaped sliding rail is arranged on the installation part.

Description

Technical Field

[0001] This utility model relates to the field of battery box production equipment, and in particular to a protective gas regulating device for laser welding. Background Technology

[0002] The application of laser welding machines in battery box production benefits from their high efficiency, high precision, and good adaptability to various materials during the welding process. With the rapid expansion of the new energy vehicle market, lithium batteries, as a core component of electric vehicles, have a decisive impact on the safety and performance of the entire vehicle. As a crucial structure for storing and protecting battery packs, the welding quality of the battery box directly affects the safety of the battery pack and the reliability of the vehicle. Laser welding technology offers advantages such as a small heat-affected zone, non-contact processing, and high welding speed, making it an indispensable standard process in power battery production. In the welding of battery modules, laser welding can provide stable welding quality, reduce welding defects, and improve the overall performance and safety of the battery pack.

[0003] However, existing shielding gas devices for laser welding often encounter the following problems in use: In the traditional laser welding process, the required weld depth varies for different products and welding angles. Therefore, shielding gas injection devices with different angles are needed. However, traditional shielding gas devices can only provide shielding gas injection at a fixed angle, which cannot adapt to complex welding requirements. The process of frequently changing and installing shielding gas injection devices with different angles is not only time-consuming and laborious, but also difficult to accurately adjust the angle, which cannot effectively guarantee product quality. Utility Model Content

[0004] The main objective of this invention is to provide a shielding gas regulating device for laser welding, which effectively solves the problem mentioned in the background art that existing traditional shielding gas devices can only provide shielding gas injection at a fixed angle and cannot adapt to complex welding requirements.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A shielding gas regulating device for laser welding, comprising:

[0007] A laser welding head, comprising a welding head housing and a laser generator, wherein the laser generator is disposed inside the welding head housing;

[0008] The upper sleeve is fixedly sleeved on the outer surface of the laser welding head;

[0009] The lower sleeve shell is located below the upper sleeve shell, and both the upper sleeve shell and the lower sleeve shell are provided with annular grooves;

[0010] A movable collar, the top and bottom of which are respectively embedded in the annular grooves of the upper sleeve shell and the lower sleeve shell;

[0011] The mounting component is fixedly connected to the body of the movable collar;

[0012] The adjusting rollers include an upper roller and a lower roller. The upper rollers are arranged in an arc and movably mounted on one side of the mounting component, and the lower rollers are located below the upper rollers.

[0013] An arc-shaped slide rail is provided on the mounting component;

[0014] An arc-shaped adjusting rod is slidably connected to an arc-shaped slide rail. A groove is provided on the top arc surface of the arc-shaped adjusting rod, and the upper roller is embedded in the groove on the top arc surface of the arc-shaped adjusting rod.

[0015] A protective gas nozzle is installed at the end of the arc-shaped adjusting rod.

[0016] Also includes:

[0017] A first gas supply pipe, one end of which is connected to the protective gas nozzle;

[0018] A connecting port, wherein the connecting port is connected to the welding head housing;

[0019] A second gas supply pipe, one end of which is placed in the connecting port;

[0020] An airflow distribution valve is provided, wherein the other end of the first air supply pipe and the other end of the second air supply pipe are both connected to the airflow distribution valve.

[0021] Positioning holes, wherein a set of positioning holes is provided, and a set of positioning holes is distributed on the outer surface of the arc-shaped adjusting rod;

[0022] A fixed housing is installed below the arc-shaped adjusting rod;

[0023] A connector, one end of which is inserted into the fixing shell, and the other end of which is inserted into any one of the positioning holes.

[0024] The mounting component is located on one side of the welding head housing.

[0025] The number of lower rollers is less than that of upper rollers.

[0026] The arc-shaped slide rail is located between the upper roller and the lower roller.

[0027] The protective gas nozzle is connected to the end of the arc-shaped adjusting rod by bolt thread.

[0028] Compared with the prior art, the beneficial effects of this utility model are: the utility model uses an arc-shaped adjusting rod to slide along an arc-shaped slide rail, thereby driving the protective gas nozzle to change its angle. Furthermore, the upper and lower rollers guide and support the sliding of the arc-shaped adjusting rod, enabling the protective gas nozzle to precisely adjust its angle and improve welding quality. Attached Figure Description

[0029] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0030] Figure 1 This is a schematic diagram of the overall shape of the present utility model.

[0031] Figure 2 for Figure 1 A magnified view of A in the middle.

[0032] Figure 3 This is a schematic cross-sectional view of the present invention.

[0033] Labels in the diagram: 1. Laser welding head; 101. Welding head housing; 102. Laser generator; 2. Upper sleeve housing; 3. Lower sleeve housing; 4. Movable collar; 5. Mounting component; 6. Adjusting roller; 61. Upper roller; 62. Lower roller; 7. Arc-shaped slide rail; 8. Arc-shaped adjusting rod; 9. Protective gas nozzle; 10. First gas supply pipe; 11. Connecting port; 12. Second gas supply pipe; 13. Airflow distribution valve; 14. Positioning hole; 15. Fixing shell; 16. Connector. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] like Figure 1-3As shown, a shielding gas regulating device for laser welding includes: a laser welding head 1, a welding head housing 101, a laser generator 102, an upper sleeve shell 2, a lower sleeve shell 3, a movable collar 5, a mounting component 5, adjusting rollers 6, an upper roller 61, a lower roller 62, an arc-shaped slide rail 7, an arc-shaped adjusting rod 8, and a shielding gas nozzle 9. The laser welding head 1 includes a welding head housing 101 and a laser generator 102, with the laser generator 102 disposed inside the welding head housing 101. The upper sleeve shell 2 is fixedly fitted onto the outer surface of the laser welding head 1, and the lower sleeve shell 3 is located below the upper sleeve shell 2. Both the upper sleeve shell 2 and the lower sleeve shell 3 have annular grooves. By creating these annular grooves and engaging with the movable collar 4, a stable mounting base is provided for the mounting component 5. These components surround the outer surface of the laser welding head 1, enabling connection with other regulating components without affecting the normal operation of the laser welding head 1.

[0037] The top and bottom of the movable collar 4 are respectively embedded in the annular grooves of the upper sleeve shell 2 and the lower sleeve shell 3. The mounting part 5 is fixedly connected to the ring body of the movable collar 4. The mounting part 5 is located on one side of the welding head housing 101. The movable collar 4 serves to connect the upper and lower sleeve shells 3 and provides a fixing point for the mounting part 5, so that the mounting part 5 can be stably located on one side of the welding head housing 101. As an intermediate component connecting other adjustment components, the mounting part 5 connects the adjusting roller 6, the arc-shaped slide rail 63, the arc-shaped adjusting rod 8, and other components to the movable collar 4 and related components of the laser welding head 1, providing structural support for the entire shielding gas adjustment function.

[0038] In this embodiment, the adjusting roller 6 includes an upper roller 61 and a lower roller 62. The upper roller 61 is arranged in an arc and movably installed on one side of the mounting component 5, while the lower roller 62 is located below the upper roller 61. The number of lower rollers 62 is less than the number of upper rollers 61. An arc-shaped slide rail 63 is formed on the mounting component 5 and is located between the upper roller 61 and the lower roller 62. An arc-shaped adjusting rod 8 is slidably connected to the arc-shaped slide rail 63. The top arc surface of the arc-shaped adjusting rod 8 has a groove. Through the slidable connection with the arc-shaped slide rail 63, the protective air nozzle 9 is driven to change its angle. The fitting relationship between the groove on its top arc surface and the upper roller 61 ensures the stability of the connection and allows it to move accurately along a predetermined trajectory during sliding. The upper roller surface is embedded in the groove on the top arc surface of the arc-shaped adjusting rod 8, and the protective air nozzle 9 is installed at the end of the arc-shaped adjusting rod 8. The protective air nozzle 9 is connected to the end of the arc-shaped adjusting rod 8 by bolt threads. As the arc-shaped adjusting rod 8 slides, the upper roller 61 rolls accordingly. Due to its arc-shaped arrangement and its interlocking relationship with the top arc surface of the arc-shaped adjusting rod 8, it guides the sliding direction of the arc-shaped adjusting rod 8 and provides support, ensuring smooth sliding. Located below the upper roller 61 and fewer in number, these rollers work together with the upper roller 61 to guide and support the sliding of the arc-shaped adjusting rod 8 at different heights, further ensuring the stability of the arc-shaped adjusting rod 8 during sliding.

[0039] Preferably, one end of the first gas supply pipe 10 is connected to the shielding gas nozzle 9, and the connecting port 11 is connected to the welding head housing 101. One end of the second gas supply pipe 12 is placed in the connecting port 11, and the other ends of both the first gas supply pipe 10 and the second gas supply pipe 12 are connected to the gas flow distribution valve 13. A set of positioning holes 14 is provided, distributed on the outer surface of the arc-shaped adjusting rod 8. The fixing shell 15 is installed below the arc-shaped adjusting rod 8. One end of the connector 16 is inserted into the fixing shell 15, and the other end of the connector 16 is inserted into any one of the positioning holes 14. The first gas supply pipe 10 and the second gas supply pipe 12 are the shielding gas delivery channels, respectively connecting the shielding gas nozzle 9, the welding head housing 101, and the gas flow distribution valve 13. When adjusting the shielding gas angle, the shielding gas delivery path is controlled by switching the connection state between these two gas supply pipes and the gas flow distribution valve 13 to adapt to different welding requirements. After the angle of the arc-shaped adjusting rod 8 is adjusted, the connector 16 serves to fix the arc-shaped adjusting rod 8, preventing the arc-shaped adjusting rod 8 from shifting during the welding process, thereby ensuring the stability of the angle of the protective gas nozzle 9.

[0040] It should be noted that, in the laser welding shielding gas adjustment device designed in this utility model, when the laser welding head 1 is started and the laser generator 102 is in the welding state, the second gas supply pipe 12 will be supplied with shielding gas by the gas flow distribution valve 13. The shielding gas enters the gap between the welding head housing 101 and the laser generator 102 until it reaches the welding part of the laser generator 102 at the bottom and takes effect. When the angle or position of the product to be welded is changed or a deeper weld is required, the angle of the shielding gas needs to be adjusted. The arc-shaped adjustment rod 8 is manually pulled, and the arc-shaped adjustment rod 8 slides along the arc-shaped slide rail 63. The shielding gas nozzle 9 will change angle with the sliding arc-shaped adjustment rod 8. The upper roller 61 and the lower roller 62 will be driven to roll accordingly, which plays a guiding role and ensures that the sliding process is smooth. The engagement of the upper roller 61 and the top arc surface of the arc-shaped adjustment rod 8 also plays a connecting role. After the angle adjustment is completed, pull out the connector 16 and insert one end of the connector 16 into the nearest positioning hole 14 to fix the adjusted arc-shaped adjusting rod 8. Finally, adjust the airflow distribution valve 13 to cut off the second air supply pipe 12 and connect it to the first air supply pipe 10. Protective gas is sprayed out from the protective gas nozzle 9, and the angle adjustment is completed.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shielding gas regulating device for laser welding, characterized in that, include: A laser welding head (1) includes a welding head housing (101) and a laser generator (102), wherein the laser generator (102) is disposed inside the welding head housing (101); Upper sleeve (2), the upper sleeve (2) is fixedly sleeved on the outer surface of the laser welding head (1); The lower sleeve shell (3) is located below the upper sleeve shell (2), and both the upper sleeve shell (2) and the lower sleeve shell (3) are provided with annular grooves. Movable collar (4), the top and bottom of which are respectively embedded in the annular grooves of the upper sleeve shell (2) and the lower sleeve shell (3); Mounting component (5), which is fixedly connected to the ring body of the movable collar (4); Adjusting roller (6), the adjusting roller (6) includes an upper roller (61) and a lower roller (62), the upper roller (61) is arranged in an arc and movably installed on one side of the mounting part (5), and the lower roller (62) is located below the upper roller (61); An arc-shaped slide rail (63) is provided on the mounting component (5); An arc-shaped adjusting rod (8) is slidably connected to the arc-shaped slide rail (63). The top arc surface of the arc-shaped adjusting rod (8) is provided with a groove, and the upper roller (61) is embedded in the groove of the top arc surface of the arc-shaped adjusting rod (8). A protective gas nozzle (9) is installed at the end of the arc-shaped adjusting rod (8).

2. The shielding gas regulating device for laser welding according to claim 1, characterized in that, Also includes: A first gas supply pipe (10) is connected at one end to the protective gas nozzle (9); A connecting port (11) is connected to the welding head housing (101); The second gas supply pipe (12) has one end placed in the connecting port (11); The airflow distribution valve (13) is connected to the airflow distribution valve (13) at the other end of the first air supply pipe (10) and the other end of the second air supply pipe (12); Positioning holes (14), a set of positioning holes (14) are provided, and a set of positioning holes (14) are distributed on the outer surface of the arc-shaped adjusting rod (8); A fixed housing (15) is installed below the arc-shaped adjusting rod (8); A connector (16) is provided, one end of which is inserted into the fixed shell (15), and the other end of which is inserted into any one of the positioning holes (14).

3. The shielding gas regulating device for laser welding according to claim 1, characterized in that, The mounting component (5) is located on one side of the welding head housing (101).

4. The shielding gas regulating device for laser welding according to claim 1, characterized in that, The number of lower rollers (62) is less than that of upper rollers (61).

5. The shielding gas regulating device for laser welding according to claim 1, characterized in that, The arc-shaped slide rail (63) is located between the upper roller (61) and the lower roller (62).

6. The shielding gas regulating device for laser welding according to claim 1, characterized in that, The protective gas nozzle (9) is connected to the end of the arc-shaped adjusting rod (8) by bolt thread.

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