Welding tool

Abstract

The utility model discloses a welding tool, which relates to the technical field of battery production, and comprises a pressing block connecting plate and a welding pressing block connected to the bottom surface of the pressing block connecting plate, a laser light passing port penetrating through the height direction of the welding pressing block is arranged in the welding pressing block, and a first through hole coaxial and communicated with the laser light passing port is arranged on the pressing block connecting plate; a dust removal channel is further formed in the welding pressing block, the bottom end of the dust removal channel communicates with the laser light passing opening, and the top end of the dust removal channel communicates with the first dust removal connecting piece through a dust removal groove in the pressing block connecting plate. When the laser welding device works, laser penetrates through the first through hole and the laser light passing opening to weld a product, a closed welding channel is formed between the laser light passing opening and the product, external dust cannot enter the closed welding channel, and dust in the welding channel can be discharged through the dust removal channel; smoke and welding slag generated in the laser welding process can be effectively discharged; the problem that the dust and smoke removing effect is poor due to an open tool is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a welding tool. Background Art

[0002] Power batteries can be divided into three categories according to their appearance: square, cylindrical, and soft-pack, among which square batteries are the most widely used.

[0003] In the production process of square batteries, laser welding is often used to connect the cell tab connector and the cover plate to achieve current conduction. Currently, most welding tools are open structures, that is, the laser and the dust suction device are independent of each other. During welding, the laser acts on the product to be welded, and the dust suction device is close to the product to be welded for dust suction to reduce the impact of dust and welding smoke on laser welding. The open structure requires an additional clamping mechanism to clamp the product to be welded. Importantly, when the dust suction device is turned on, dust in the surrounding air will approach the product to be welded. Under the action of airflow, dust will be present around the product to be welded. Similarly, smoke will drift. The open structure is not effective in removing smoke, which in turn affects the effect of laser welding. Summary of the invention

[0004] The utility model aims to provide a welding tool to solve the problem that the open tool in the prior art leads to poor dust and smoke removal effect around the welded product.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] A welding tool, comprising a pressing block connecting plate and a welding pressing block connected to the bottom surface of the pressing block connecting plate, wherein the welding pressing block is provided with a laser light opening penetrating the height direction thereof, and the pressing block connecting plate is provided with a first through hole coaxial with and connected to the laser light opening;

[0007] A dust removal channel is also provided in the welding pressing block, the bottom end of the dust removal channel is connected to the laser light passage, and the top end is connected to the first dust removal connecting piece through the dust removal groove on the pressing block connecting plate.

[0008] Furthermore, the bottom surface of the pressing block connecting plate is provided with a slide groove along its length direction, and the top surface of the welding pressing block is provided with a slide rail member, and the slide rail member is engaged and slidably connected in the slide groove.

[0009] Furthermore, the bottom surface of the pressure block connecting plate is provided with a plurality of spring grooves, and the top surface of the welding pressure block is provided with connecting grooves adapted to the spring grooves; one end of the spring is arranged in the spring groove, and the other end is arranged in the connecting groove.

[0010] Furthermore, a shielding gas channel is provided in the welding block; the bottom end of the shielding gas channel is connected to the laser light opening, and the top end is connected to the first shielding gas through hole on the block connecting plate.

[0011] Furthermore, a fixing plate for connecting to an external device is connected to the top surface of the pressing block connecting plate, and a second through hole coaxial with and connected to the first through hole and a second shielding gas through hole connected to the first shielding gas through hole are provided on the fixing plate.

[0012] Furthermore, the top surface of the fixed plate is connected to a second dust removal connecting piece, the second dust removal connecting piece is provided with a laser light passage groove which is coaxial with and connected to the second through hole, and the second dust removal connecting piece is connected to a second dust removal pipe which is connected to the laser light passage groove.

[0013] Furthermore, a third internal threaded hole is provided on the fixing plate, and a third bolt through hole is provided on the second dust removal connecting piece; a bolt passes through the third bolt through hole and is connected to the third internal threaded hole.

[0014] Further, the first dust removal connecting piece is connected to the side connecting block, and the side connecting block is provided with first and second bolt through holes;

[0015] A second internal threaded hole is provided on the side of the fixing plate, and a first internal threaded hole is provided on the side of the pressing block connecting plate;

[0016] A plurality of bolts respectively penetrate through the first and second bolt through holes and are connected to the first internal thread hole or the second internal thread hole.

[0017] Furthermore, the first dust removal connecting piece includes a first dust removal duct, and the first dust removal duct is connected to the dust removal groove through a connecting air groove on the side connecting block.

[0018] Furthermore, the bottom surface of the welding pressing block has a welding plane.

[0019] According to the above technical solution, the beneficial effects of the utility model are:

[0020] The welding block of the present application is designed with a laser light opening running through its height direction and a coaxial and connected first through hole is set on the block connecting plate, and a dust removal channel connected to the laser light opening is also designed; when working, the welding block is pressed on the product, and the laser passes through the first through hole and the laser light opening to weld the product, and a closed welding channel is formed between the laser light opening and the product, and external dust will not enter therein. The dust in the welding channel can be discharged through the dust removal channel, and the smoke and welding slag generated during laser welding can be effectively discharged; the problem of poor dust and smoke removal effect caused by open tooling is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front position relationship diagram of the welding tool of the utility model;

[0022] Figure 2 This is an exploded view of the welding tooling of the utility model;

[0023] Figure 3 The three views of the appearance of the welding pressing block of the utility model are shown;

[0024] Figure 4 The three views of the appearance of the pressing block connecting plate of the utility model;

[0025] Figure 5 The three views of the fixed plate of the utility model;

[0026] Figure 6 It is a three-view diagram of the appearance of the second dust removal connecting piece of the utility model;

[0027] Figure 7 The three views of the side connection block of the utility model are as follows;

[0028] Figure 8 It is a three-view diagram of the appearance of the first dust removal connecting piece of the utility model.

[0029] Among them: 1. welding block; 2. block connecting plate; 3. fixing plate; 4. second dust removal connecting piece; 5. side connecting block; 6. first dust removal connecting piece; 1-1. protective gas channel; 1-2. dust removal channel; 1-3. laser light port; 1-4. slide rail; 1-5. pressure welding plane; 1-6. connecting groove; 2-1. dust removal groove; 2-2. first protective gas through hole; 2-3. spring groove; 2-4. first internal thread hole; 2-5. first Through hole; 2-6, slide groove; 3-1, oblong hole; 3-2, second protective gas hole; 3-3, third internal threaded hole; 3-4, second internal threaded hole; 3-5, second through hole; 4-1, third bolt hole; 4-2, laser light groove; 4-3, second dust removal duct; 5-1, first second bolt hole; 5-2, fourth internal threaded hole; 5-3, connecting air groove; 6-1, first dust removal duct; 6-2, fourth bolt hole. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] It should be noted that in the description of the present invention, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention rather than requiring that the present invention must be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. The terms "front", "rear", "left", "right", "up", and "down" used in the description of the present invention refer to the directions in the accompanying drawings, and the terms "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0032] like Figures 1 to 8 As shown, a welding tool comprises a pressure block connecting plate 2 and a welding pressure block 1 connected to the bottom surface of the pressure block connecting plate 2, the welding pressure block 1 is provided with a laser light opening 1-3 which passes through the pressure block 1 in its height direction, and the pressure block connecting plate 2 is provided with a first through hole 2-5 which is coaxial with and connected to the laser light opening 1-3; the welding pressure block 1 is also provided with a dust removal channel 1-2, the bottom end of the dust removal channel 1-2 is connected to the laser light opening 1-3, and the top end is connected to the first dust removal connector 6 through the dust removal groove 2-1 on the pressure block connecting plate 2.

[0033] The welding block of the present application is designed with a laser light opening running through its height direction and a coaxial and connected first through hole is set on the block connecting plate, and a dust removal channel connected to the laser light opening is also designed; when working, the welding block is pressed on the product, and the laser passes through the first through hole and the laser light opening to weld the product, and a closed welding channel is formed between the laser light opening and the product, and external dust will not enter therein. The dust in the welding channel can be discharged through the dust removal channel, and the smoke and welding slag generated during laser welding can be effectively discharged; the problem of poor dust and smoke removal effect caused by open tooling is solved.

[0034] The welding pressure block 1 and the pressure block connecting plate 2 are respectively provided with parallel and corresponding positioning grooves and slide rails. After the spring on the pressure block connecting plate 2 is installed, the two welding pressure blocks 1 can be directly pushed into the positioning grooves on the pressure block connecting plate 2 to achieve the connection and fixation of the welding pressure block 1 and the pressure block connecting plate 2.

[0035] In a further embodiment, two first through holes 2-5 are designed on the block connecting plate 2, and correspondingly, two welding blocks 1 are connected to its bottom surface, and each welding block 1 corresponds to a first through hole 2-5, that is, the laser light opening 1-3 in each welding block 1 is connected to a first through hole 2-5 and is coaxially arranged, and the bottom surface of the welding block 1 has a pressure welding plane 1-5. During welding, the pressure welding plane 1-5 can be effectively pressed on the surface of the cover plate or the pole ear, and at this time, the laser light opening 1-3 is a closed welding channel, which ensures the removal effect of dust, smoke and welding slag.

[0036] In a further embodiment, the welding block 1 and the block connecting plate 2 are connected by a slide groove and a slide rail. The bottom surface of the block connecting plate 2 is provided with a slide groove 2-6 along its length direction, and the top surface of the welding block 1 is provided with a slide rail 1-4, and the slide rail 1-4 is engaged and slidably connected in the slide groove 2-6. Figure 1-4 As shown, the slide groove 2-6 includes a vertical groove body and a semi-enclosed groove body formed by a protrusion. Correspondingly, the slide rail member 1-4 includes a vertical plate and an L-shaped plate adapted to the vertical groove body. When the slide rail member 1-4 is connected to the slide groove 2-6, the vertical plate is inserted into the vertical groove body, and the top of the L-shaped plate is located in the semi-enclosed groove body. The protrusion can be engaged with the top of the L-shaped groove body to prevent the pressure block connecting plate 2 from falling. The welding pressure block 1 and the pressure block connecting plate 2 are connected in the form of a slide groove and a slide rail, which facilitates the assembly of the two.

[0037] In a further embodiment, the bottom surface of the press block connecting plate 2 is provided with 8 spring grooves 2-3, and the top surface of each welding press block 1 is provided with 4 connecting grooves 1-6 adapted to the spring grooves 2-3; one end of the spring is arranged in the spring groove 2-3, and the other end is arranged in the connecting groove 1-6. The spring can be arranged to make the welding press block 1 float up and down in a small range. Before welding, the welding press block 1 is pressed down on the product before welding. The floating welding press block 1 can prevent the rigid collision between the welding press block 1 and the product, thereby protecting the tooling and the product. The installation of the spring can be carried out through an auxiliary film sheet.

[0038] Internal threaded holes are provided on the sides of the pressing block connecting plate 2 and the integral fixing plate 3, and through holes are provided at corresponding positions on the side connecting block 5. Bolts are passed through the through holes on the side connecting block 5 and enter the internal threaded holes on the pressing block connecting plate 2 and the integral fixing plate 3 to achieve connection and fixation between the pressing block connecting plate 2 and the integral fixing plate 3. Internal threaded holes are provided on the upper surface of the integral fixing plate 3, and a through hole is provided at a corresponding position on the second dust removal connecting piece 4. Bolts are passed through the through holes on the second dust removal connecting piece 4 and the rubber pad of the corresponding shape structure and enter the internal threaded holes on the integral fixing plate 3 to achieve connection and fixation between the second dust removal connecting piece 4 and the integral fixing plate 3. Internal threaded holes are provided on the side connecting block 5, and through holes are provided at corresponding positions on the first dust removal connecting piece 6. Bolts are passed through the through holes on the first dust removal connecting piece 6 and the rubber pad of the corresponding shape structure and enter the internal threaded holes on the side fixing block 5 to achieve connection and fixation between the first dust removal connecting piece 6 and the side fixing block 5.

[0039] In one embodiment, the top surface of the pressing block connecting plate 2 is connected to a fixing plate 3 for connecting to an external device, and the fixing plate 3 is provided with a second through hole 3-5 coaxial with and connected to the first through hole 2-5, and a second shielding gas through hole 3-2 connected to the first shielding gas through hole 2-2 is designed, and the second shielding gas through hole 3-2 is used to communicate with an external pipeline for conveying shielding gas. The shielding gas channel 1-1 is designed in the welding pressing block 1, and the bottom end of the shielding gas channel 1-1 is connected to the laser light port 1-3, and the top end is connected to the shielding gas through hole 2-2 on the pressing block connecting plate 2. By designing the shielding gas channel 1-1, shielding gas can pass through during welding to ensure stable and reliable welding.

[0040] The protection gas is delivered through the second dust removal connection piece 4. Specifically, Figure 4 and Figure 5 As shown, the top surface of the fixed plate 3 is connected to the second dust removal connector 4, and the gas protection connector 4 is provided with a laser light passage 4-2 which is coaxial with and connected to the second through hole 3-5 to ensure that the laser can enter vertically. The second dust removal connector 4 is connected to a second dust removal duct 4-3 which is connected to the laser light passage 4-2. The fixed plate 3 is provided with a third internal threaded hole 3-3, and the second dust removal connector 4 is provided with a third bolt through hole 4-1, and a bolt passes through the third bolt through hole 4-1 and is connected to the third internal threaded hole 3-3 to achieve the connection between the two.

[0041] Furthermore, an oblong hole 3-1 is provided on the fixing plate 3, and a bolt passes through the oblong hole 3-1 to connect the fixing plate 3 and the external device; the oblong hole 3-1 is arranged in the horizontal direction, and the horizontal position of the tooling can be adjusted by adjusting the horizontal position of the bolt in the oblong hole 3-1, so that the laser light port covers the position on the cover plate that needs to be welded.

[0042] The connection between the pressing block connecting plate 2 and the fixing plate 3 is realized by the side connecting block 5, specifically, as Figure 4 , Figure 5 and Figure 7 As shown, five first and second bolt through holes 5-1 are provided on the side connecting block 5; three second internal threaded holes 3-4 are provided on the left and right sides of the fixing plate 3, and two first internal threaded holes 2-4 are provided on the left and right sides of the pressing block connecting plate 2; three bolts are passed through the three first and second bolt through holes 5-1 above to connect to the second internal threaded holes 3-4, and two bolts are passed through the two first and second bolt through holes 5-1 below to connect to the first internal threaded holes 2-4, thereby realizing the connection between the pressing block connecting plate 2, the fixing plate 3 and the side connecting block 5.

[0043] The dust removal of the present application is led out through the first dust removal connection member 6, and further, as Figure 7 and Figure 8As shown, the first dust removal connector 6 is connected to the side connection block 5, and the connection between the two is achieved by bolts passing through the fourth bolt through hole on the first dust removal connector 6 and connecting to the fourth internal threaded hole on the side connection block 5. After the connection, the first dust removal duct 6-1 is connected to the dust removal groove 2-1 through the connecting air groove 5-3 on the side connection block 5 to provide a channel for the discharge of dust, smoke and welding slag.

[0044] In summary, there are two welding blocks 1, which are provided with a welding channel for passing laser inside, and shielding gas channels for passing shielding gas and dust removal channels for removing welding slag are distributed on both sides of the channel, and the other ends of the two channels are on the upper surface of the welding block 1. Parallel slide rails are provided on both sides of the upper surface of the welding block 1, and parallel positioning slide grooves are provided on both sides of the lower surface of the block connecting plate 2. The welding block 1 and the block connecting plate 2 are connected through corresponding positioning grooves. A spring groove is provided on the lower surface of the block connecting plate 2, and the spring is placed in the spring groove so that the welding block 1 maintains a certain upper and lower movable space. Two dust removal grooves are provided on the lower surface of the block connecting plate 2. The dust removal channel openings on the upper surfaces of the two welding blocks 1 correspond to the two dust removal grooves on the lower surface of the block connecting plate 2. After the installation and connection are completed, dust removal airflow can be passed. Two shielding gas through holes are provided inside the block connecting plate 2, corresponding to the positions of the shielding gas channel openings on the upper surface of the welding block 1. Internal threaded holes are provided on the sides of the pressing block connecting plate 2 and the integral fixing plate 3. There are two side connecting blocks 5, and through holes are opened at corresponding positions. Bolts enter the internal threaded holes through the through holes, and in this way, the pressing block connecting plate 2 is connected and fixed to the integral fixing plate 3. A dust removal through hole is provided inside the side connecting block 5, which corresponds to the side opening position of the dust removal groove on the lower surface of the pressing block connecting plate 2.

[0045] During the welding process of the battery cover and the tab, the tooling as a whole is pressed down on the tab and the cover by the corresponding cylinder of the equipment to make the cover and the tab flat and in close contact. The shielding gas flows to the welding position through the shielding gas channel. The laser is shot down from the space reserved by the tooling directly above the tab welding position, and the welding slag is sucked away through the dust removal channel. The tooling is used for welding the cover and the connecting piece. After a pair of coils are first welded to the connecting piece by ultrasonic welding, and then welded to the cover through the tab, it can effectively improve the welding yield of the coils.

[0046] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A welding tool, characterized in that: It comprises a pressing block connecting plate and a welding pressing block connected to the bottom surface of the pressing block connecting plate, wherein the welding pressing block is provided with a laser light opening penetrating the height direction thereof, and the pressing block connecting plate is provided with a first through hole coaxial with and connected to the laser light opening; A dust removal channel is also provided in the welding pressing block, the bottom end of the dust removal channel is connected to the laser light passage, and the top end is connected to the first dust removal connecting piece through the dust removal groove on the pressing block connecting plate.

2. The welding tool according to claim 1, characterized in that: The bottom surface of the pressing block connecting plate is provided with a slide groove along the length direction thereof, and the top surface of the welding pressing block is provided with a slide rail member, and the slide rail member is engaged and slidably connected in the slide groove.

3. The welding tool according to claim 1 or 2, characterized in that: The bottom surface of the pressure block connecting plate is provided with a plurality of spring grooves, and the top surface of the welding pressure block is provided with connecting grooves matched with the spring grooves; one end of the spring is arranged in the spring groove, and the other end is arranged in the connecting groove.

4. The welding tool according to claim 1, characterized in that: A shielding gas channel is also provided in the welding block; the bottom end of the shielding gas channel is connected to the laser light opening, and the top end is connected to the first shielding gas through hole on the block connecting plate.

5. The welding tool according to claim 4, characterized in that: A fixing plate for connecting to external equipment is connected to the top surface of the pressing block connecting plate, and a second through hole coaxial with and connected to the first through hole and a second protective gas through hole connected to the first protective gas through hole are provided on the fixing plate.

6. The welding tool according to claim 5, characterized in that: The top surface of the fixed plate is connected to a second dust removal connecting piece, the second dust removal connecting piece is provided with a laser light passage groove which is coaxial with and connected to the second through hole, and the second dust removal connecting piece is connected to a second dust removal pipe which is connected to the laser light passage groove.

7. The welding tool according to claim 6, characterized in that: The fixing plate is provided with a third internal threaded hole, and the second dust removal connecting piece is provided with a third bolt through hole; a bolt passes through the third bolt through hole and is connected to the third internal threaded hole.

8. The welding tool according to claim 5, characterized in that: The first dust removal connecting piece is connected to the side connecting block, and the side connecting block is provided with first and second bolt through holes; A second internal threaded hole is provided on the side of the fixing plate, and a first internal threaded hole is provided on the side of the pressing block connecting plate; A plurality of bolts respectively penetrate through the first and second bolt through holes and are connected to the first internal thread hole or the second internal thread hole.

9. The welding tool according to claim 8, characterized in that: The first dust removal connecting piece includes a first dust removal pipe, and the first dust removal pipe is connected with the dust removal groove through a connecting air groove on the side connecting block.

10. The welding tool according to claim 1, characterized in that: The bottom surface of the welding block has a welding plane.

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