Sealing nail welding device

Abstract

The sealing nail welding device is used for battery welding and comprises a machining head, a sealing cover and a negative pressure pipeline, one end of the machining head is an operation end, the operation end of the machining head extends into the sealing cover, the sealing cover is provided with an opening, and the negative pressure pipeline is communicated with the sealing cover. When the processing head is used for welding the battery, the opening is attached to the plate face around the welded position of the battery to form a sealing cavity, the opening of the sealing cover is tightly attached to the plate face around the welded position of the battery to form a sealing cavity, the negative pressure pipeline is communicated with the sealing cover, dust in the sealing cavity can be effectively captured, and the dust in the sealing cavity can be effectively removed. According to the dust collection device, dust, smoke and other harmful substances generated in the welding process are prevented from being diffused to the surrounding, the dust collection rate and collection efficiency are greatly improved, compared with a traditional remote negative pressure dust removal mode, dust can be efficiently captured at the dust generation source, and the dust escape possibility is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a sealing nail welding device. Background Art

[0002] In the current sealing nail welding process, dust removal is an important step to ensure the cleanliness of the production environment. Its efficiency and effectiveness are directly related to the overall operation quality of the production line. The current dust removal method is mainly achieved by setting up a negative pressure dust removal duct. This design places the duct directly above the welding port, with the intention of effectively adsorbing and discharging the dust generated during the welding process through the negative pressure effect. However, in practical operations, due to the certain distance maintained between the dust removal duct and the welding part, and the diffusion characteristics and uneven distribution of dust during welding, the dust adsorption effect is not ideal, and there is a problem that some dust escapes and is not effectively collected, which in turn leads to problems such as affecting product quality and human health. Utility Model Content

[0003] In order to overcome at least one of the defects of the prior art described above, the present invention provides a sealing nail welding device, which can solve the problem of dust leakage generated during the sealing nail welding process of the battery.

[0004] The technical solution adopted by the present invention to solve the problem is:

[0005] A sealing nail welding device for battery welding, comprising:

[0006] A processing head, one end of which is a working end;

[0007] a sealing cover, into which the working end of the processing head extends, and the sealing cover has an opening;

[0008] A negative pressure pipe, the negative pressure pipe being in communication with the sealing cover;

[0009] When the processing head welds the battery, the opening fits into the plate surface around the welded portion of the battery to form a sealed cavity.

[0010] By adopting the above solution, a sealed cavity is constructed by closely fitting the opening of the sealing cover to the plate surface around the battery being welded. The negative pressure pipe is connected to the sealing cover, which can effectively capture the dust in the sealed cavity, preventing the dust, smoke and other harmful substances generated during the welding process from spreading to the surrounding area. It also greatly enhances the dust collection rate and efficiency. Compared with traditional long-distance negative pressure dust removal methods, it can efficiently capture dust at the source of generation, greatly reducing the possibility of dust escape. In addition, during the operation of the negative pressure pipe, the atmospheric pressure makes the sealing cover and the battery plate surface fit more tightly, further reducing the possibility of dust escape.

[0011] In addition, the formation of a sealed cavity can also help reduce airflow disturbances during welding, improve welding stability and consistency, and thus may indirectly improve welding quality.

[0012] Furthermore, a sealing ring is provided on a side of the sealing cover facing the battery.

[0013] By adopting the above solution, the provision of a sealing ring can significantly improve the sealing between the sealing cover and the plate surface around the battery where it is welded. It can fit tightly on the battery plate surface, effectively preventing dust, smoke, etc. generated during the welding process from leaking out from the gap between the sealing cover and the plate surface.

[0014] In addition, in order to ensure the airtightness of the sealed cavity, the part in contact with the battery will be subjected to a certain pressure, which will reduce the service life of this part. The sealing function requirement is transferred to the sealing ring. When there is a problem with the sealing ring, the sealing ring can be replaced, thereby reducing the cost of maintaining the welding device.

[0015] Furthermore, the sealing ring is provided on an end surface of the sealing cover facing the battery, or the sealing ring is provided on an inner wall of the sealing cover facing the battery.

[0016] By adopting the above solution, the sealing ring is arranged on the end surface of the sealing cover facing one end of the battery or on the inner wall of the opening to achieve the sealing effect. The above two sealing ring settings provide users with more choices.

[0017] Furthermore, the thickness of the sealing ring is 0.2 mm-5 mm.

[0018] If the sealing ring is less than 0.2mm thick, the seal will be insufficient, allowing dust and smoke generated during welding to leak easily, affecting the working environment and welding quality. More importantly, thin sealing rings are more susceptible to damage and have poor resistance to shock and vibration loads, increasing the frequency of maintenance and replacement.

[0019] If the thickness of the sealing ring is higher than 5 mm, the cost will be increased unnecessarily without improving the sealing effect.

[0020] Furthermore, there are multiple negative pressure pipes, and all of them are connected to the sealing cover.

[0021] By adopting this solution, the installation of multiple negative pressure ducts creates multiple dust collection points within the sealed enclosure, more comprehensively covering the welding area and reducing the escape of dust and smoke. This also helps to more effectively capture and remove harmful substances generated during the welding process, improving dust removal efficiency.

[0022] Furthermore, a plurality of the negative pressure pipes are arranged at equal intervals along the circumference of the sealing cover.

[0023] By adopting the above solution, multiple negative pressure pipes are arranged at equal intervals along the circumference of the sealing cover, which can balance the airflow distribution in the sealing cavity, avoid dust accumulation in local areas due to poor airflow, help maintain the cleanliness of the welding environment, and improve welding quality.

[0024] Furthermore, the negative pressure pipe is arranged to be inclined in a direction away from the opening.

[0025] The tilted negative pressure ducting design helps prevent exhausted dust and smoke from re-entering the containment hood due to backflow. Furthermore, the tilted negative pressure ducting reduces the vertical space occupied by the ducting. Compared to vertical or horizontal ducting, tilted ducting achieves the same suction efficiency while allowing for a more compact arrangement around the containment hood, thus reducing the overall production line space occupied.

[0026] Furthermore, the sealing cover is cylindrical.

[0027] By adopting the above solution, the cylindrical sealing cover saves more space, and the internal space of the cylindrical sealing cover is smaller, which can achieve rapid cleaning of the interior of the sealing cover.

[0028] Furthermore, the processing head includes a welding head and a laser, and both the welding head and the laser extend into the sealing cover.

[0029] By adopting the above solution, the welding head and the laser are directly extended into the sealing cover, so that the laser beam can directly act on the welding area, reducing energy loss and interference during beam transmission, thereby improving welding accuracy and efficiency.

[0030] Furthermore, the processing head is externally connected to a processing seat, and the processing seat abuts against the outer surface of the sealing cover.

[0031] By adopting the above solution, the processing head is connected to the processing base as an independent module, making the installation process of the entire welding device simpler and faster. The operator only needs to connect the processing head to the processing base and ensure that the processing base is tightly abutted against the outer surface of the sealing cover to complete the installation. In addition, even if the processing base and processing head are integrated into a module, the installation of the processing base also facilitates the transmission connection between the welding device and the robot arm or other transmission shaft.

[0032] Furthermore, the cross-sectional area of ​​the processing seat gradually increases from an end close to the sealing cover to an end away from the sealing cover.

[0033] By adopting the above solution, the structure in which the cross-sectional area of ​​the processing seat gradually increases can provide a stable mounting carrier for the processing head and the sealing cover, thereby improving the stability of the welding device.

[0034] In summary, the sealing nail welding device provided by the present invention has the following technical effects:

[0035] 1. The opening of the sealing cover fits tightly with the plate surface around the battery to be welded, forming a sealed cavity. This confines harmful substances such as dust and smoke generated during the welding process within the sealed cavity, preventing dust and other substances generated during the welding process from spreading to the surrounding environment, and protecting the working environment and the health of operators.

[0036] 2. The negative pressure pipe is connected to the sealing cover, which can efficiently capture dust at the source. Compared with the traditional long-distance negative pressure dust removal method, this method greatly enhances the dust collection rate and efficiency, and greatly reduces the possibility of dust escape.

[0037] 3. The formation of a sealed cavity can also reduce airflow disturbances during welding, thereby stabilizing the welding environment and helping to improve welding stability and consistency.

[0038] 4. During the operation of the negative pressure pipeline, the atmospheric pressure makes the sealing cover and the battery plate fit more closely, further reducing the possibility of dust escape.

[0039] 5. Since the sealed chamber reduces airflow disturbance during welding, the stability and consistency of welding are improved, which indirectly improves the welding quality and makes the welding results more reliable and in line with standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0041] Figure 2 Schematic diagram of gas flow in a negative pressure state of the negative pressure pipeline of the present invention;

[0042] Figure 3 This is a schematic diagram of the working process of the welding device of the present invention.

[0043] Among them, the meanings of the accompanying figures are as follows: 1. processing head; 11. working end; 2. sealing cover; 21. opening; 22. sealing ring; 3. negative pressure pipe; 4. processing seat; 5. battery; 51. sealing pin. DETAILED DESCRIPTION

[0044] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. 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 limiting the present invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0048] See Figure 1-Figure 2 The utility model discloses a sealing nail welding device for welding a battery 5, which is mainly used for welding the sealing nail 51 of the battery 5. Of course, it can also be used for other welding. The welding device includes a processing head 1, a sealing cover 2 and a negative pressure pipe 3. One end of the processing head 1 is a working end 11. The working end 11 of the processing head 1 extends into the sealing cover 2. The sealing cover 2 has an opening 21. The negative pressure pipe 3 is connected to the sealing cover 2. When the processing head 1 welds the battery 5, the opening 21 fits with the plate surface around the welded part of the battery 5 to form a sealed cavity.

[0049] Specifically, the processing head 1 is mainly used for welding the sealing nail 51 of the battery 5 so that the sealing nail 51 and the battery 5 cover plate remain sealed. One end of the processing head 1 is the working end 11, which is an end with a welding function. The working end 11 of the processing head 1 extends into the sealing cover 2, thereby realizing welding processing inside the sealing cover 2. The sealing cover 2 is a hollow structure to ensure that the processing head 1 can directly act on the place where the battery 5 needs to be welded. It is best if the sealing cover 2 is provided with an opening 21 on the opposite side of the processing head 1, so as to ensure the effect of the processing head 1. The sealing cover 2 can select a structure or material with a sealing function as needed to achieve the sealing effect at the opening 21. The negative pressure pipe 3 is connected to the sealing cover 2 to ensure that the negative pressure pipe 3 can capture dust and other substances inside the sealing cover 2. The specific position of the negative pressure pipe 3 is composed of a pipe and other negative pressure equipment, so that the pipe is in a negative pressure state.

[0050] The shape of the sealing cover 2 can be selected as needed, such as cylindrical, truncated cone, conical, prismatic, pyramidal, or other irregular shapes, as long as it can ensure the normal operation of the processing head 1 and the negative pressure pipe 3, as well as the formation of the sealing cavity, and is not limited here.

[0051] The working principle of the above structure is:

[0052] The cover plate at the sealing pin 51 of the battery 5 is aligned with the opening 21, and the welding device as a whole moves toward the battery 5 until the cover plate around the sealing pin 51 is fitted at the opening 21 to form a sealed cavity. After the sealing cover 2 completes the sealing of the cover plate of the battery 5, the processing head 1 starts to work, and at the same time, a negative pressure state is present in the negative pressure pipe 3. Dust particles and other substances generated during the welding process are affected by the negative pressure pipe 3 and discharged with the airflow, thereby achieving the effect of preventing dust from escaping.

[0053] It should be noted that the air pressure balance in the sealing cover 2 can be achieved by releasing the negative pressure in the sealing cover 2 through the negative pressure pipe 3 after the dust is captured, or by setting other pipes for balancing the air pressure, which will not be elaborated here.

[0054] In some embodiments, a sealing ring 22 is provided on the side of the sealing cover 2 facing the battery 5 .

[0055] Specifically, the sealing ring 22 is provided on the side of the sealing cover 2 facing the battery 5, which can ensure that the sealing ring 22 contacts the battery 5 first, ensuring the sealing inside the sealing cover 2 during the welding process. The sealing ring 22 can fit tightly on the surface of the battery 5, effectively preventing dust, smoke, etc. generated during the welding process from leaking out from the gap between the sealing cover 2 and the surface of the plate. Since it is necessary to ensure the sealing at the contact point between the sealing cover 2 and the battery 5, the part of the sealing cover 2 in contact with the battery 5 will be subject to a certain pressure, thereby reducing the service life of this part. The functional requirement of sealing is transferred to the sealing ring 22, and the welding device does not need to replace the entire sealing cover 2 during long-term use, as in the case where the sealing ring 22 is not provided. In the case where the sealing ring 22 is provided, it is sufficient to replace the sealing ring 22, thereby reducing the cost of maintaining the welding device.

[0056] In some embodiments, the sealing ring 22 is disposed on the end surface of the sealing cover 2 facing the battery 5 , or the sealing ring 22 is disposed on the inner wall of the sealing cover 2 facing the battery 5 .

[0057] Specifically, when the sealing ring 22 is positioned on the end surface of the sealing cover 2 facing the battery 5, the sealing ring 22 and the cover of the battery 5 are in contact with each other to complete the formation of the sealed cavity. When the sealing ring 22 is positioned on the inner wall of the sealing cover 2 facing the battery 5, that is, on the inner wall of the sealing cover 2 near the opening 21, the sealing cover 2 is sleeved onto the side wall of the battery 5, and the battery 5 to be welded can also be enclosed. All of the above methods can achieve the purpose of preventing the escape of dust and other substances during welding, and users can freely choose according to their needs.

[0058] In some embodiments, the thickness of the sealing ring 22 ranges from 0.2 mm to 5 mm. Specifically, if the sealing ring 22 is less than 0.2 mm, it may not provide adequate sealing, allowing dust and fumes generated during welding to leak easily, affecting the working environment and welding quality. More importantly, a thin sealing ring 22 is more susceptible to damage and is less resistant to shock and vibration loads, increasing the frequency of maintenance and replacement. If the sealing ring 22 is thicker than 5 mm, it may result in unnecessary cost increases without improving the sealing effect.

[0059] In some embodiments, multiple negative pressure pipes 3 are provided, and all are connected to the sealing cover 2. The provision of multiple negative pressure pipes 3 means that multiple dust suction points are formed in the sealing cover 2, which can more comprehensively cover the welding area, reduce the escape of dust and smoke, and help improve the dust removal efficiency.

[0060] On the basis of the structure in which multiple negative pressure pipes 3 are arranged in the welding device, multiple negative pressure pipes 3 are arranged at equal intervals along the circumference of the sealing cover 2. Multiple negative pressure pipes 3 are arranged at equal intervals along the circumference of the sealing cover 2, which can balance the airflow distribution in the sealing cavity, avoid dust accumulation in local areas due to poor airflow, help maintain the cleanliness of the welding environment, and improve welding quality.

[0061] In some embodiments, the negative pressure pipe 3 is tilted in a direction away from the opening 21. Specifically, since the battery 5 processing line requires more equipment, the space for each functional module is limited. The negative pressure pipe 3 is tilted in a direction away from the opening 21. Compared with vertically or horizontally arranged pipes, the inclined pipe can achieve the same dust collection effect while being arranged more compactly around the sealing cover 2, thereby reducing the space occupied by the entire production line.

[0062] In this embodiment, the sealing cover 2 is cylindrical. Specifically, since the processing distance of the processing head 1 is relatively fixed, the minimum height of the sealing cover 2 is determined. When the height of the sealing cover 2 is determined, compared with the conical and frustum-shaped sealing covers 2, the cylindrical sealing cover 2 saves more space, and the internal space of the cylindrical sealing cover 2 is smaller, which can achieve rapid cleaning of the inside of the sealing cover 2.

[0063] In this embodiment, the processing head 1 includes a welding head and a laser, and both the welding head and the laser extend into the sealing cover 2. Specifically, the welding head and the laser extend directly into the sealing cover 2, allowing the laser beam to act directly on the welding area, reducing energy loss and interference during beam transmission, thereby improving welding precision and efficiency. In addition, the processing head 1 can also be freely added with functional heads as needed, which is not limited here.

[0064] In this embodiment, the processing head 1 is externally connected to a processing seat 4 , and the processing seat 4 abuts against the outer surface of the sealing cover 2 .

[0065] Specifically, the processing head 1 is connected to the processing seat 4 as an independent module, making the installation process of the entire welding device simpler and faster. The operator only needs to connect the processing head 1 with the processing seat 4 and ensure that the processing seat 4 is tightly abutted against the outer surface of the sealing cover 2 to complete the installation.

[0066] In addition, even if the processing seat 4 and the processing head 1 are an integrated module, that is, the processing seat 4 and the processing head 1 are integrated at the factory, based on the setting of the processing seat 4, it also facilitates the transmission connection between the welding device and the robot arm or other transmission shaft.

[0067] Furthermore, based on the structure of the processing head 1 and the external processing seat 4, the cross-sectional area of ​​the processing seat 4 gradually increases from the end close to the sealing cover 2 to the end away from the sealing cover 2. Specifically, the structure of the gradually increasing cross-sectional area of ​​the processing seat 4 can provide a stable mounting carrier for the processing head 1 and the sealing cover 2, thereby improving the stability of the welding device.

[0068] The working principle of this utility model:

[0069] Reference Figure 3 As shown, it is divided into five steps:

[0070] The first step is to align the output end of the processing head 1 with the sealing pin 51 to be welded, until the axis of the processing head 1 and the axis of the sealing pin 51 are on the same straight line;

[0071] The second step is: the welding device moves downward and / or the battery 5 moves upward until the sealing cover 2 is in contact with the battery 5, forming a sealed cavity inside the sealing cover 2. At the same time, the negative pressure pipe 3 enters a negative pressure state, further improving the tightness of the sealing cover 2 and the battery 5.

[0072] The third step is: the processing head 1 welds the sealing pin 51;

[0073] The fourth step is: after the processing head 1 completes welding, the processing head 1 stops working, and the negative pressure pipe 3 continues to work to fully capture the dust generated during the welding process;

[0074] The fifth step is: after completing the capture of the dust, the negative pressure state of the negative pressure pipe 3 is released, the welding device moves up and / or the battery 5 moves down until the sealing cover 2 is separated from the battery 5, and the welding of the sealing pin 51 is completed.

[0075] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A sealing nail welding device for battery (5) welding, characterized in that: include: A processing head (1), one end of which is a working end (11); A sealing cover (2), wherein the working end (11) of the processing head (1) extends into the sealing cover (2), and the sealing cover (2) has an opening (21); A negative pressure pipe (3), the negative pressure pipe (3) being in communication with the sealing cover (2); When the processing head (1) welds the battery (5), the opening (21) fits with the plate surface around the welded portion of the battery (5) to form a sealed cavity.

2. A sealing nail welding device according to claim 1, characterized in that: A sealing ring (22) is provided on the side of the sealing cover (2) facing the battery (5).

3. A sealing nail welding device according to claim 2, characterized in that: The sealing ring (22) is provided on the end surface of the sealing cover (2) facing the battery (5), or the sealing ring (22) is provided on the inner wall of the sealing cover (2) facing the battery (5).

4. A sealing nail welding device according to claim 2 or 3, characterized in that: The thickness of the sealing ring (22) is 0.2 mm to 5 mm.

5. The sealing nail welding device according to claim 1, characterized in that: A plurality of negative pressure pipes (3) are provided, and all are in communication with the sealing cover (2).

6. A sealing nail welding device according to claim 5, characterized in that: The plurality of negative pressure pipes (3) are arranged at equal intervals along the circumference of the sealing cover (2).

7. A sealing nail welding device according to any one of claims 1, 5 or 6, characterized in that: The negative pressure pipe (3) is arranged to be inclined in a direction away from the opening (21).

8. The sealing nail welding device according to claim 1, characterized in that: The sealing cover (2) is cylindrical.

9. The sealing nail welding device according to claim 1, characterized in that: The processing head (1) comprises a welding head and a laser, and both the welding head and the laser extend into the sealing cover (2).

10. The sealing nail welding device according to claim 1, characterized in that: The processing head (1) is externally connected to a processing seat (4), and the processing seat (4) abuts against the outer surface of the sealing cover (2).

11. A sealing nail welding device according to claim 10, characterized in that: The cross-sectional area of ​​the processing seat (4) gradually increases from an end close to the sealing cover (2) to an end away from the sealing cover (2).

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