A new type of laser welding indenter

Abstract

The utility model discloses a novel laser welding pressure head, including mounting panel and conical head, the middle part of mounting panel is equipped with through -hole, the conical head sets up in mounting panel one side, the inside of conical head is equipped with passageway, the conical head is connected with the through -hole, the end face edge of conical head is equipped with the gas -blowing mouth for discharging nitrogen far from mounting panel one side, the side surface of mounting panel or conical head is equipped with the air inlet hole for nitrogen air inlet, the angle of between air inlet and gas -blowing mouth on horizontal plane is 90 degrees, and air inlet and gas -blowing mouth all are connected with passageway. The utility model provides a novel laser welding pressure head, through structure design, makes nitrogen blowing distance welding point near to avoid the dust -collecting area, therefore, nitrogen amount loss is small, reaches good cooling, insulates oxygen, makes the effect of welding point better, avoids appearing bad phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of laser welding pressure head technology, and in particular to a novel laser welding pressure head. Background Technology

[0002] Laser welding is a common processing technology in module production. It is a non-contact welding process, and tooling fixtures are indispensable auxiliary facilities during the welding process. When designing the pressure head, it is necessary not only to ensure good contact between the battery cell's terminal and the busbar, but also to ensure that the pressing force has a certain range of adjustment to ensure consistent pressing. In addition, gas protection measures must be considered to comprehensively improve the welding yield.

[0003] The laser welding head solution used in the existing CCS product laser welding production process has the following drawbacks: the distance between the nitrogen blowing head and the weld point is relatively far, and the nitrogen is introduced through the dust suction area, resulting in a large loss of nitrogen. This leads to poor cooling and oxygen isolation, resulting in poor appearance of the weld point, such as yellowing, blueing, and oxidation. Utility Model Content

[0004] The purpose of this invention is to provide a novel laser welding head. Through structural design, the nitrogen gas is brought close to the welding point, thus avoiding the dust collection area. Therefore, the nitrogen loss is small, achieving good cooling and oxygen isolation, resulting in better welding effect and avoiding adverse phenomena.

[0005] The technical solution adopted by the novel laser welding pressure head disclosed in this utility model is as follows:

[0006] A novel laser welding pressure head includes a mounting plate and a conical head. The mounting plate has a through hole in the middle, and the conical head is disposed on one side of the mounting plate. The conical head has a channel inside and communicates with the through hole. The edge of the conical head away from the mounting plate has a blowing port for discharging nitrogen gas. The side of the mounting plate or the conical head has an air inlet for inlet nitrogen gas. The air inlet and the blowing port form a 90-degree angle on the horizontal plane, and both the air inlet and the blowing port communicate with the channel.

[0007] As a preferred embodiment, the air inlet is located on the side of the conical head, and there are two air blowing ports and two air inlets, which are distributed on the four sides of the conical head.

[0008] As a preferred embodiment, the air inlet is located on the side of the mounting plate, and there are two air blowing ports and two air inlets. The two air blowing ports are arranged opposite each other on the side of the conical head, and the two air inlets are arranged opposite each other on the side of the mounting plate.

[0009] As a preferred embodiment, the system also includes an air blowing pipe, which is fixedly connected to the air inlet.

[0010] As a preferred embodiment, the system also includes a dust collection hood, wherein the conical head is fixed to the lower end of the dust collection hood by a mounting plate, and the channel of the conical head is connected to the interior of the dust collection hood, and a dust collection port is provided on the side of the dust collection hood.

[0011] The beneficial effects of the novel laser welding head disclosed in this utility model are as follows: by setting the nitrogen inlet and outlet in the laser welding head, the flow distance of nitrogen is shortened, and the area of ​​the existing dust hood is avoided, reducing nitrogen loss. Furthermore, by setting the nitrogen blowing port on the end face edge of the conical head away from the mounting plate, the distance between nitrogen and the welding point is shortened, which can effectively cool and isolate oxygen, so that the welding point does not have yellowing, blueing, oxidation and other appearance defects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of a novel laser welding pressure head according to this utility model.

[0013] Figure 2 This is a schematic diagram of Embodiment 1 of a novel laser welding pressure head and a dust collection hood structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of a novel laser welding pressure head according to this utility model.

[0015] Figure 4 This is a schematic diagram of Embodiment 2 of a novel laser welding pressure head and a dust collection hood structure of this utility model. Detailed Implementation

[0016] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0017] Example 1

[0018] Please refer to Figure 1 and Figure 2 A novel laser welding pressure head includes a mounting plate 10 and a conical head 20. The mounting plate 10 has a through hole in the middle. The conical head 20 is disposed on one side of the mounting plate 10 and has a channel inside. The conical head 20 communicates with the through hole. The edge of the end face of the conical head 20 away from the mounting plate 10 has a blowing port 21 for discharging nitrogen. The side of the conical head 20 has an air inlet for inlet nitrogen. The angle between the air inlet 22 and the blowing port 21 on the horizontal plane is 90 degrees, and both the air inlet 22 and the blowing port 21 are connected to the channel.

[0019] There are two air inlets 21 and two air outlets 22, which are distributed on the four sides of the conical head 20.

[0020] It also includes an air blowing pipe 30 and a dust suction hood 40. The air blowing pipe 30 is fixedly connected to the air inlet 22. The conical head 20 is fixed to the lower end of the dust suction hood 40 by the mounting plate 10, and the channel of the conical head 20 is connected to the inside of the dust suction hood 40. The dust suction hood 40 has a dust suction port 41 on its side.

[0021] Figure 1 and Figure 2 The arrows indicate the path of nitrogen gas. Nitrogen gas enters the conical head 20 through the air blowing pipe 30 and then cools and isolates the laser welding area through the air blowing holes, thus preventing the weld from turning yellow, blue, oxidizing, or other unsightly defects. To ensure that the nitrogen gas can effectively cover the entire weld area, a special air blowing port 21 is provided on the contact surface between the laser welding head and the product to create a smooth path for the nitrogen gas.

[0022] During the welding process, spatter and other foreign objects such as welding slag will be generated, which can damage the laser equipment galvanometer and affect the welding effect after being blocked by foreign objects. It is necessary to use a dust suction hood 40 between the weld point and the galvanometer to suck away the foreign objects through the dust suction port 41 to prevent the foreign objects from flying upwards toward the galvanometer.

[0023] Example 2

[0024] Please refer to Figure 3 and Figure 4 A novel laser welding pressure head includes a mounting plate 10 and a conical head 20. The mounting plate 10 has a through hole in the middle. The conical head 20 is disposed on one side of the mounting plate 10 and has a channel inside. The conical head 20 communicates with the through hole. The edge of the end face of the conical head 20 away from the mounting plate 10 has a blowing port 21 for discharging nitrogen. The side of the mounting plate 10 has an air inlet for inlet nitrogen. The angle between the air inlet 22 and the blowing port 21 on the horizontal plane is 90 degrees, and both the air inlet 22 and the blowing port 21 are connected to the channel.

[0025] There are two air inlets 21 and two air outlets 22. The two air inlets 21 are arranged opposite each other on the side of the conical head 20, and the two air outlets 22 are arranged opposite each other on the side of the mounting plate 10.

[0026] It also includes an air blowing pipe 30 and a dust suction hood 40. The air blowing pipe 30 is fixedly connected to the air inlet 22. The conical head 20 is fixed to the lower end of the dust suction hood 40 by the mounting plate 10, and the channel of the conical head 20 is connected to the inside of the dust suction hood 40. The dust suction hood 40 has a dust suction port 41 on its side.

[0027] Figure 3 and Figure 4The arrows indicate the path of nitrogen gas. Nitrogen gas enters the conical head 20 through the air blowing pipe 30 and then cools and isolates the laser welding area through the air blowing holes, thus preventing the weld from turning yellow, blue, oxidizing, or other unsightly defects. To ensure that the nitrogen gas can effectively cover the entire weld area, a special air blowing port 21 is provided on the contact surface between the laser welding head and the product to create a smooth path for the nitrogen gas.

[0028] This invention provides a novel laser welding head. By placing the nitrogen inlet and outlet in the laser welding head, the flow distance of the nitrogen is shortened, while also avoiding the area of ​​existing dust hoods, reducing nitrogen loss. Furthermore, by placing the nitrogen outlet on the edge of the conical head away from the mounting plate, the distance between the nitrogen and the weld point is shortened, which effectively cools and isolates oxygen, preventing the weld point from exhibiting yellowing, blueing, oxidation, or other cosmetic defects.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A novel laser welding pressure head, characterized in that, The device includes a mounting plate and a conical head. The mounting plate has a through hole in the middle. The conical head is located on one side of the mounting plate and has a channel inside. The conical head communicates with the through hole. The edge of the conical head away from the mounting plate has a blowing port for discharging nitrogen. The side of the mounting plate or the conical head has an air inlet for inleting nitrogen. The air inlet and the blowing port form a 90-degree angle on the horizontal plane, and both the air inlet and the blowing port communicate with the channel.

2. The novel laser welding pressure head as described in claim 1, characterized in that, The air inlet is located on the side of the conical head, and there are two air inlets and two air outlets. The air inlets and air outlets are distributed on the four sides of the conical head.

3. The novel laser welding pressure head as described in claim 1, characterized in that, The air inlet is located on the side of the mounting plate, and there are two air blowing ports and two air inlets. The two air blowing ports are arranged opposite each other on the side of the conical head, and the two air inlets are arranged opposite each other on the side of the mounting plate.

4. A novel laser welding pressure head as described in any one of claims 2 or 3, characterized in that, It also includes an air blowing pipe, which is fixedly connected to the air inlet.

5. A novel laser welding pressure head as described in claim 4, characterized in that, It also includes a dust collection hood, wherein the conical head is fixed to the lower end of the dust collection hood by a mounting plate, and the channel of the conical head is connected to the inside of the dust collection hood, and a dust collection port is provided on the side of the dust collection hood.

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