Coaxial dust collection and spiral shielding gas blowing device for welding pressure nozzle

Abstract

The utility model relates to a welding pressing nozzle coaxial dust collection and spiral shielding gas blowing device which comprises a pressing plate, and a plurality of welding single pressing nozzle assemblies are installed on the pressing plate. The welding single-pressing-nozzle assembly comprises a spiral neck bush and a pressing nozzle, the top of the pressing nozzle is connected with a pressing plate above through a plurality of cantilever pins, a spiral ventilation cavity is formed between a neck bush groove and an inner cavity of the pressing nozzle, a connector is installed on a connector communicating cavity on one side of the top of the pressing nozzle, and the connector communicating cavity is communicated with the spiral ventilation cavity. The bottom of the pressing nozzle is a tail end welding seam area. According to the utility model, pseudo soldering caused by non-uniform shielding gas blowing during square shell battery module chip welding is solved, and the welding yield is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery module welding processing related technical field especially, a kind of welding press mouth coaxial dust extraction and spiral type blow protective gas device. BACKGROUND

[0002] During the processing of square shell battery module, battery tab needs to be welded on square single battery.

[0003] After searching, it is found that the existing Chinese patent No.CN222199428U discloses a lithium battery tab welding device and welding equipment, which comprises a cell clamping mechanism, a tab positioning mechanism and a base.

[0004] At present, the main phenomenon of the BUSBAR (battery tab) welding equipment for square shell battery module is that the protective gas is not uniform, which leads to virtual welding and causes a large amount of welding slag to float on the surface of the product. At the same time, there is no effective removal of welding slag during welding, which forms a poor welding environment.

[0005] In view of the above-mentioned defects, the present inventor actively researches and innovates to create a welding press mouth coaxial dust extraction and spiral type blow protective gas device, which has more industrial utilization value. INVENTION CONTENTS

[0006] To solve any of the above technical problems, the purpose of the present utility model is to provide a welding press mouth coaxial dust extraction and spiral type blow protective gas device.

[0007] To achieve the above-mentioned purpose, the present utility model adopts the following technical solutions:

[0008] The welding press mouth coaxial dust extraction and spiral type blow protective gas device comprises a pressing plate, and a plurality of welding single press mouth assemblies are installed on the pressing plate.

[0009] The welding single press mouth assembly comprises a spiral inner bushing and a press mouth. The top of the press mouth is connected to the upper pressing plate through a plurality of cantilever pins. The spiral inner bushing is embedded in the inner cavity of the press mouth. A bushing inner cavity is formed on the inner side of the spiral inner bushing. A plurality of inner bushing grooves in a spiral shape are arranged on the outer side of the spiral inner bushing. The inner bushing grooves and the press mouth inner cavity form a spiral air passage. A connector is installed on the connector communication cavity on one side of the top of the press mouth. The connector communication cavity is connected to the spiral air passage. The bottom of the press mouth is the terminal weld area.

[0010] As a further improvement of the utility model, the blow protection gas device is installed on the pressing plate on one side of the welding single pressure nozzle assembly, and the blow protection gas device is connected with the joint through a blow protection gas connecting air pipe.

[0011] As a further improvement of the utility model, the blow protection gas connecting air pipe is a connecting hose structure.

[0012] As a further improvement of the utility model, the joint communication cavity is connected with one side of the spiral air passage cavity close to the top.

[0013] As a further improvement of the utility model, the coaxial dust collection device is also installed on the pressing plate on one side of the welding single pressure nozzle assembly, and the coaxial dust collection device is connected with the spiral air passage cavity through a coaxial dust collection connecting air pipe.

[0014] As a further improvement of the utility model, the coaxial dust collection connecting air pipe is a connecting hose structure.

[0015] As a further improvement of the utility model, the coaxial dust collection device is connected with one side of the spiral air passage cavity close to the bottom.

[0016] As a further improvement of the utility model, the top of the cantilever pin is fixedly installed on the pressing plate, the pressure nozzle is movable up and down on the cantilever pin, and a rectangular spring is installed on the cantilever pin above the pressure nozzle.

[0017] By the above scheme, the utility model has at least the following advantages:

[0018] The utility model solves the false welding caused by uneven blow protection gas in the square case battery module tab welding, and greatly improves the welding yield.

[0019] The utility model effectively isolates the secondary pollution of the product through the welding dust extraction device.

[0020] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following will be explained in detail with the preferred embodiment of the utility model and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0022] Figure 1 It is a structure schematic view of the utility model welding pressure nozzle coaxial dust collection and spiral blow protection gas device.

[0023] Figure 2 is Figure 1 The schematic diagram of the explosion structure of the welding single pressure nozzle assembly is shown in the figure.

[0024] Figure 3 is Figure 2 The schematic diagram of the internal structure of the welding single pressure nozzle assembly is shown in the figure.

[0025] Figure 4 The schematic diagram of the structure of the square shell battery module to be processed is shown in the figure.

[0026] In the figure, the meanings of various reference signs are as follows.

[0027] The pressing plate 1, the protective gas blowing device 2, the coaxial dust collection device 3, the welding single pressure nozzle assembly 4, the rectangular spring 5, the cantilever pin 6, the spiral inner bushing 7, the pressure nozzle 8, the joint 9, the bushing inner cavity 10, the joint communication cavity 11, the spiral ventilation cavity 12, the end weld area 13, the square single battery 14, the battery pole 15, and the battery pad 16. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0029] In order to enable the personnel in the technical field to understand the utility model scheme better, the technical scheme in the utility model embodiments will be described clearly and completely below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. The components of the utility model embodiments described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by the personnel in the art without creative labor are within the scope of protection of the utility model.

[0030] As Figures 1-4 shown, a welding pressure nozzle coaxial dust collection and spiral protective gas blowing device comprises a pressing plate 1, and a plurality of welding single pressure nozzle assemblies 4 are installed on the pressing plate 1.

[0031] The welding single pressure nozzle assembly 4 comprises a spiral inner bushing 7 and a pressure nozzle 8. The top of the pressure nozzle 8 is connected to the upper pressure plate 1 through a plurality of cantilever pins 6. The spiral inner bushing 7 is embedded in the pressure nozzle inner cavity of the pressure nozzle 8. The inner bushing cavity 10 is formed on the inner side of the spiral inner bushing 7. A plurality of spiral inner bushing grooves are formed on the outer side of the spiral inner bushing 7. The spiral ventilation cavity 12 is formed between the inner bushing grooves and the pressure nozzle inner cavity. The joint 9 is installed on the joint communication cavity 11 on one side of the top of the pressure nozzle 8. The joint communication cavity 11 is connected to the spiral ventilation cavity 12. Specifically, the joint communication cavity 11 is connected to the spiral ventilation cavity 12 on the side close to the top. The bottom of the pressure nozzle 8 is the terminal weld area 13.

[0032] The blow protection gas device 2 is installed on the pressure plate 1 on one side of the welding single pressure nozzle assembly 4. The blow protection gas device 2 is connected to the joint 9 through the blow protection gas connecting pipe. The blow protection gas connecting pipe is a connecting hose structure.

[0033] The coaxial dust collection device 3 is also installed on the pressure plate 1 on one side of the welding single pressure nozzle assembly 4. The coaxial dust collection device 3 is connected to the spiral ventilation cavity 12 through the coaxial dust collection connecting pipe. The coaxial dust collection connecting pipe is a connecting hose structure. Specifically, the coaxial dust collection device 3 is connected to the spiral ventilation cavity 12 on the side close to the bottom.

[0034] In addition, the top of the cantilever pin 6 is fixedly installed on the pressure plate 1. The pressure nozzle 8 can move up and down on the cantilever pin 6. The rectangular spring 5 is installed on the cantilever pin 6 above the pressure nozzle 8. The welding single pressure nozzle assembly 4 is connected to the pressure plate 1. The product is pressed and welded through the action of the rectangular spring 5.

[0035] As shown in Figure 3 , the cross-sectional view of the welding single pressure nozzle assembly 4. The laser passes through the inner bushing cavity 10. The light path is controlled by the two axes inside the galvanometer. The battery tab 16 on the square single body battery 14 is drawn and welded. The protective gas is input through the joint 9, passes through the spiral ventilation cavity 12, and uniformly reaches the terminal weld area 13.

[0036] As shown in Figure 1 and Figure 2 , the pressure plate 1 is connected to the cantilever pin 6 of the welding single pressure nozzle assembly 4. A certain number of welding single pressure nozzle assemblies 4 are installed. The blow protection gas device 2 is connected to the joint 9 through the gas pipe to realize the flow of the welding protection gas path. The coaxial dust collection device 3 is fixed to the pressure plate 1 to realize the coaxial sealing dust collection during welding. The coaxial dust collection device 3 forms a backflow with the protective gas path (i.e., the spiral ventilation cavity 12).

[0037] During the welding process, the pressure nozzle 8 is tightly attached to the battery tab 16 to form a closed chamber. The dust generated during the welding process is sucked by the coaxial dust collection device 3 to prevent secondary pollution of the product and the machine during welding.

[0038] As Figure 2 And Figure 4 The rectangular spring 5 is connected with the cantilever pin 6, and the floating nozzle 8 compensates the height deviation of the battery tab 16 and the battery pole 15. The spiral inner sleeve 7 is fixed with the nozzle 8, and the spiral inner sleeve 7 is used to form a vortex of the protective gas, and effectively covers the welding area. The joint 9 is connected through the air pipe and the nozzle 8, and the conveying of the protective gas is realized.

[0039] The utility model discloses solve the false welding of square battery module tab welding due to the uneven blowing of protective gas, and greatly improve the welding yield. Through the welding dust extraction device, the secondary pollution of the product is effectively isolated.

[0040] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0041] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0042] The above only is the preferred implementation manner of the utility model, and is not used for limiting the utility model, and it should be pointed out that, for ordinary skilled in the art, on the premise that the technical principles of the utility model are not departed from, a plurality of improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A coaxial dust suction and spiral protective gas blowing device for welding nozzle, comprising a pressing plate (1), a plurality of welding single nozzle assemblies (4) are installed on the pressing plate (1); characterized in that The welding single nozzle assembly (4) comprises a spiral inner sleeve (7) and a nozzle (8), the top of the nozzle (8) is connected with the upper pressing plate (1) through a plurality of cantilever pins (6), the spiral inner sleeve (7) is embedded in the nozzle inner cavity of the nozzle (8), a sleeve inner cavity (10) is formed on the inner side of the spiral inner sleeve (7), a plurality of spiral inner sleeve grooves are arranged on the outer side of the spiral inner sleeve (7), the spiral inner sleeve grooves and the nozzle inner cavity form a spiral ventilation cavity (12), a joint (9) is installed on the joint communication cavity (11) on one side of the top of the nozzle (8), the joint communication cavity (11) is communicated with the spiral ventilation cavity (12), and the bottom of the nozzle (8) is a terminal welding seam area (13).

2. The welding nozzle concentric suction and spiral type shielding gas blowing protection device according to claim 1, characterized in that, A protective gas blowing device (2) is installed on one side of the pressing plate (1) of the welding single nozzle assembly (4), and the protective gas blowing device (2) is connected with the joint (9) through a protective gas blowing connection pipe.

3. The welding nozzle concentric suction and spiral type shielding gas blowing device according to claim 2, wherein The protective gas blowing connection pipe is a connection hose structure.

4. The welding nozzle concentric suction and spiral type shielding gas blowing device according to claim 1, wherein The joint communication cavity (11) is communicated with one side close to the top of the spiral ventilation cavity (12).

5. The welding nozzle concentric suction and spiral type shielding gas blowing device according to claim 1, wherein A coaxial dust suction device (3) is also installed on one side of the pressing plate (1) of the welding single nozzle assembly (4), and the coaxial dust suction device (3) is communicated with the spiral ventilation cavity (12) through a coaxial dust suction connection pipe.

6. The welding nozzle concentric suction and spiral type shielding gas blowing device according to claim 5, wherein The coaxial dust suction connection pipe is a connection hose structure.

7. The welding nozzle concentric suction and spiral type shielding gas blowing device according to claim 5, wherein The coaxial dust suction device (3) is communicated with one side close to the bottom of the spiral ventilation cavity (12).

8. The welding nozzle concentric suction and spiral type shielding gas blowing device according to claim 1, wherein The top of the cantilever pin (6) is fixedly installed on the pressing plate (1), the nozzle (8) can move up and down on the cantilever pin (6), and a rectangular spring (5) is installed on the cantilever pin (6) above the nozzle (8).

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