Copper foil conductive tab welding equipment

Abstract

The invention discloses copper foil conductive tab welding equipment which comprises a roller type copper foil conveying mechanism and a laser welding mechanism, the laser welding mechanism is arranged in the middle of the roller type copper foil conveying mechanism, and the laser welding mechanism comprises a welding table, an optical fiber galvanometer type welding machine and a conductive tab pressing mechanism. The optical fiber galvanometer type welding machine is arranged above the welding table, and the conductive tab pressing mechanism is arranged between the optical fiber galvanometer type welding machine and the welding table. The problem that copper foils are prone to being welded through when existing ultrasonic welding equipment is used for welding copper foil conductive tabs is solved.

Description

Technical Field

[0001] The present invention relates to the field of copper foil product production, and particularly to a copper foil conductive electrode tab welding device. Background Art

[0002] ‌The copper foil for welding conductive electrode tabs is mainly used for conducting electricity and carrying other devices on the circuit. The copper foil plays an important role in welding, especially in the welding of the inner core electrode tabs of the battery. As a conductor, the copper foil ensures the efficient flow of current in the electronic circuit and reduces energy loss.

[0003] In the prior art, ultrasonic welding technology is usually used to weld conductive electrode tabs on the copper foil. However, this technology actually has certain defects. Specifically, ultrasonic welding is prone to the problem of welding through the copper foil. Once the copper foil is welded through, a high internal resistance situation will occur. To solve this problem, it is necessary to improve the existing welding technology and equipment for conductive electrode tabs. Summary of the Invention

[0004] The purpose of the present invention is to provide a copper foil conductive electrode tab welding device to solve the problem that the existing ultrasonic welding device is prone to welding through the copper foil when used for welding copper foil conductive electrode tabs. To solve the above technical problems, the present invention adopts the following technical solutions: A copper foil conductive electrode tab welding device includes a roller-type copper foil conveying mechanism and a laser welding mechanism. The laser welding mechanism is arranged in the middle of the roller-type copper foil conveying mechanism. The laser welding mechanism includes a welding table, a fiber optic galvanometer welding machine, and a conductive electrode tab pressing mechanism. The fiber optic galvanometer welding machine is arranged above the welding table, and the conductive electrode tab pressing mechanism is arranged between the fiber optic galvanometer welding machine and the welding table.

[0005] In this solution, the original ultrasonic welding mechanism is abandoned, and a fiber optic galvanometer welding machine is adopted. In this way, the original ultrasonic welding is changed to laser welding. By this welding method, the disadvantages of ultrasonic welding are solved. During the welding process, the copper foil is conveyed on the roller-type copper foil conveying mechanism. When it reaches the welding table, the conductive electrode tab is pushed to the upper welding position of the copper foil by the pushing mechanism. After being pushed in place, the conductive electrode tab is pressed by the conductive electrode tab pressing mechanism, and then the fiber optic galvanometer welding machine starts welding operations. After welding is completed, the copper foil with the welded conductive electrode tab is continuously sent to the subsequent processing equipment for subsequent processing by the roller-type copper foil conveying mechanism. The fiber optic galvanometer welding machine is arranged on the lifting mechanism for easy focusing.

[0006] As a further preference of the present invention, the roller-type copper foil conveying mechanism includes a copper foil reel support mechanism at the feeding end, an intermediate support roller, and a terminal pulling mechanism arranged in sequence from front to back.

[0007] The copper foil reel support mechanism at the feeding end can support the copper foil reel. The middle support roller can support the copper foil and limit the position of the copper foil. Then the end pulling mechanism can pull the copper foil.

[0008] As a further preference of the present invention, the copper foil reel support mechanism at the feeding end includes a support cylinder and a copper foil reel position limiting mechanism. The support cylinder is arranged at the lower part of the feeding end of the equipment installation back plate. The copper foil reel position limiting mechanism includes a position limiting head and a position limiting head positioning mechanism. The position limiting head is arranged at the outer end of the support cylinder. The position limiting head is detachably connected to the support cylinder through the position limiting head positioning mechanism.

[0009] The existing position limiting heads are generally fixed-point type position limiting, that is to say, the position limiting width cannot be adjusted after installation. And the existing production lines usually do not produce only one specification of products, that is to say, the sizes of the copper foils used will be different. However, due to the equipment limitations, the differences will not be too large. But just this small size difference will make the position limiting adaptability of the position limiting head poor, and it is easy to cause the copper foil to deviate during the welding process. Slightly, it will lead to the inability to guarantee the quality of the produced products. Seriously, it will affect the entire production process, because the deviated copper foil may have problems such as curling and winding during the production process. Therefore, the existing position limiting head has been improved, changing the fixed-point type position limiting to adjustable position limiting, so that the adaptability of the position limiting structure is better, and it can complete the position limiting operation more accurately, so that the copper foil will not deviate during the feeding process, and it can better guarantee the quality of copper foil processing.

[0010] As a further preference of the present invention, the position limiting head is inserted at the outer end of the support cylinder. A positioning insertion hole is arranged at the bottom of the position limiting head. The position limiting head positioning mechanism includes a horizontal telescopic support rod and a vertical connecting positioning rod. The inner end of the horizontal telescopic support rod is fixedly connected to the equipment installation back plate. The vertical connecting positioning rod is arranged at the outer end of the horizontal telescopic support rod. The vertical positioning rod is threadedly connected to the horizontal telescopic support rod. The upper part of the vertical positioning rod is adapted to the positioning insertion hole. When the vertical positioning rod is in the uppermost position, its upper part will be inserted into the positioning insertion hole.

[0011] The position limiting length can be adjusted through the horizontal telescopic support rod. After the adjustment is in place, the vertical connecting positioning rod is screwed upward so that the upper part of the vertical connecting positioning rod is inserted into the positioning insertion hole at the bottom of the position limiting head, so that the position limiting head can be limited and fixed. Such a structure is simple.

[0012] As a further preference of the present invention, a dust blowing mechanism is also arranged between the support cylinder and the middle support roller.

[0013] It can blow away the dust on the surface of the copper foil before processing.

[0014] As a further preference of the present invention, the soot blowing mechanism is arranged at the front of the conveying path of the copper foil. The soot blowing mechanism includes an upper soot blowing port and a lower soot blowing port, and the upper soot blowing port and the lower soot blowing port are respectively located above and below the copper foil conveying path.

[0015] As a further preference of the present invention, the end pulling mechanism includes a winding mechanism, an upper fixed roller row and a lower sliding roller row. The winding mechanism is arranged at the discharge end, the upper fixed roller row and the lower sliding roller row are arranged in front of the winding mechanism, the upper fixed roller row and the lower sliding roller row are arranged side by side, the rollers of the upper fixed roller row are arranged staggeredly with the rollers of the lower sliding roller row, and the support plate of the lower sliding roller row is slidably connected with the equipment installation back plate through a slide rail.

[0016] Because welding takes time, by the up and down sliding of the lower sliding roller row of the end pulling mechanism, sufficient welding time can be fully reserved. When the lower sliding roller row slides upward and closes to the upper fixed roller row, the winding mechanism will still continue to wind, but since the distance between the upper fixed roller row and the lower sliding roller row is closer, the stroke becomes shorter, and the winding mechanism winds the extra part, so it will not pull the copper foil at the welding table backward. When the lower sliding roller row slides downward and away from the upper fixed roller row, the distance between the upper fixed roller row and the lower sliding roller row becomes farther, and it can pull the copper foil at the welding table backward. Through the cyclic operation of such a mechanism, the pulling process of the copper foil moving backward after staying at the welding table for a period of time can be realized.

[0017] As a further preference of the present invention, the surface of the welding table is a glass support table surface, and a welding table receiving roller and a welding table feeding roller are respectively arranged on both sides of the welding table.

[0018] As a further preference of the present invention, an electrode ear feeding port is arranged at the equipment installation back plate at the inner end of the welding table, and a cylinder type pushing structure is arranged at the inner end of the electrode ear feeding port.

[0019] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects: 1. In this solution, the original ultrasonic welding mechanism is abandoned, and a fiber optic galvanometer welding machine is adopted, so that the original ultrasonic welding is changed to laser welding. By such a welding method, the disadvantages of ultrasonic welding are solved. During the welding process, the copper foil is conveyed on the roller type copper foil conveying mechanism. When it reaches the welding table, the pusher mechanism pushes the electrode ear to the upper welding position of the copper foil. After pushing in place, the electrode ear pressing mechanism presses the electrode ear, and then the fiber optic galvanometer welding machine starts to perform welding operations. After welding is completed, the copper foil welded with the electrode ear is continued to be sent to the subsequent processing equipment by the roller type copper foil conveying mechanism for subsequent processing.

[0020] 2. The copper foil reel support mechanism at the feeding end can support the copper foil reel. The middle support roller can support the copper foil and limit its position. Then the end pulling mechanism can pull the copper foil.

[0021] 3. The existing limit heads are generally fixed-point type limits, that is, the limit width cannot be adjusted after installation. And the existing production lines usually do not produce only one specification of products, that is, the copper foil sizes used will be different. However, due to equipment limitations, the differences will not be too large. But precisely this small size difference will result in poor adaptability of the limit head, and it is easy to cause the copper foil to deviate during the welding process. Slightly, it will lead to the inability to guarantee the quality of the produced products. Seriously, it will affect the entire production process because the deviated copper foil may have problems such as curling and winding during the production process. Therefore, the existing limit head has been improved, changing the fixed-point type limit to an adjustable type limit, so that the adaptability of the limit structure is better, and it can complete the limit operation more accurately, ensuring that the copper foil will not deviate during the feeding process and better guaranteeing the quality of copper foil processing.

[0022] 4. The limit length can be adjusted through the horizontal telescopic support rod. After the adjustment is in place, turn the vertical connection positioning rod upward so that the upper part of the vertical connection positioning rod is inserted into the positioning socket hole at the bottom of the limit head, which can play a role in limiting and fixing the limit head. Such a structure is simple.

[0023] 5. It can blow away the dust on the surface of the copper foil before processing.

[0024] 6. Since welding takes time, through the up and down sliding of the lower sliding roller row of the end pulling mechanism, sufficient welding time can be left. When the lower sliding roller row slides upward and closes to the upper fixed roller row, the winding mechanism will still continue to wind. However, since the distance between the upper fixed roller row and the lower sliding roller row is approaching, the stroke becomes shorter, and the winding mechanism winds the extra part, so it will not pull the copper foil at the welding table backward. When the lower sliding roller row slides downward and moves away from the upper fixed roller row, the distance between the upper fixed roller row and the lower sliding roller row becomes farther, and it can pull the copper foil at the welding table backward. Through the cyclic operation of such a mechanism, the pulling process of the copper foil staying at the welding table for a period of time and then moving backward can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present invention.

[0026] Figure 2 is a schematic structural diagram of the welding table of the present invention.

[0027] Figure 3 is a schematic structural diagram of the copper foil reel support mechanism at the feeding end of the present invention.

[0028] Figure 4 This is a schematic structural view of the upper fixed roller row and the lower sliding roller row of the present invention. Specific embodiments

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0032] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present invention is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific Embodiment 1:

[0036] Figure 1 , Figure 2 , Figure 3 , Figure 4 A copper foil conductive tab welding device is shown, which includes a roller-type copper foil conveying mechanism and a laser welding mechanism. The laser welding mechanism is arranged in the middle of the roller-type copper foil conveying mechanism. The laser welding mechanism includes a welding table 1, a fiber optic galvanometer welding machine 2, and a conductive tab pressing mechanism 3. The fiber optic galvanometer welding machine 2 is arranged above the welding table 1, and the conductive tab pressing mechanism 3 is arranged between the fiber optic galvanometer welding machine 2 and the welding table 1.

[0037] In this solution, the original ultrasonic welding mechanism is abandoned, and a fiber optic galvanometer welding machine is adopted. In this way, the original ultrasonic welding is changed to laser welding. By this welding method, the disadvantages of ultrasonic welding are solved. During the welding process, the copper foil is conveyed on the roller-type copper foil conveying mechanism. When it reaches the welding table, the conductive tab is pushed to the welding position above the copper foil by the pusher mechanism. After being pushed in place, the conductive tab is pressed by the conductive tab pressing mechanism, and then the fiber optic galvanometer welding machine starts to perform welding operations. After welding is completed, the copper foil with the conductive tab is continuously sent to the subsequent processing equipment for subsequent processing by the roller-type copper foil conveying mechanism. The fiber optic galvanometer welding machine is arranged on the lifting mechanism, which is convenient for focusing. Specific Embodiment 2:

[0039] This embodiment further describes the roller-type copper foil conveying mechanism on the basis of Specific Embodiment 1. The roller-type copper foil conveying mechanism includes a feed-end copper foil reel supporting mechanism 4, an intermediate support roller 5, and a terminal pulling mechanism 6 arranged in sequence from front to back.

[0040] The feed-end copper foil reel supporting mechanism can support the copper foil reel, the intermediate support roller can support the copper foil and limit the copper foil, and then the terminal pulling mechanism can pull the copper foil. Specific Embodiment 3:

[0042] This embodiment further describes the copper foil reel support mechanism 4 at the feeding end on the basis of the specific embodiment 2. The feeding-end copper foil reel support mechanism 4 includes a support cylinder body 41 and a copper foil reel limiting mechanism 42. The support cylinder body 41 is arranged at the lower part of the feeding end of the equipment installation backboard. The copper foil reel limiting mechanism 42 includes a limiting head 421 and a limiting head positioning mechanism 422. The limiting head 421 is arranged at the outer end of the support cylinder body 41, and the limiting head 421 is detachably connected to the support cylinder body 41 through the limiting head positioning mechanism 422.

[0043] Existing limiting heads are generally fixed-point type limits, that is to say, the limiting width cannot be adjusted after installation. And existing production lines usually do not produce only one specification of products, that is to say, the copper foil sizes used will be different. However, due to equipment limitations, the differences will not be too large. But it is precisely this small size difference that will result in poor adaptability of the limiting head, and it is easy to cause the copper foil to run off during the welding process. Slightly, it will lead to the inability to guarantee the quality of the produced products. Seriously, it will affect the entire production process because the running-off copper foil may have problems such as curling and winding during the production process. Therefore, the existing limiting head has been improved, changing the fixed-point type limit to an adjustable type limit, so that the adaptability of the limiting structure is better, and the limiting operation can be completed more accurately, so that the copper foil will not shift during the feeding process, and the quality of copper foil processing can be better guaranteed. Specific embodiment 4:

[0045] This embodiment further describes the limiting head 421 on the basis of the specific embodiment 3. The limiting head 421 is inserted at the outer end of the support cylinder body 41. There is a positioning insertion hole at the bottom of the limiting head 421. The limiting head positioning mechanism 422 includes a horizontal telescopic support rod and a vertical connection positioning rod. The inner end of the horizontal telescopic support rod is fixedly connected to the equipment installation backboard. The vertical connection positioning rod is arranged at the outer end of the horizontal telescopic support rod. The vertical positioning rod is threadedly connected to the horizontal telescopic support rod. The upper part of the vertical positioning rod is adapted to the positioning insertion hole. When the vertical positioning rod is in the uppermost position, its upper part will be inserted into the positioning insertion hole.

[0046] The limiting length can be adjusted through the horizontal telescopic support rod. After the adjustment is in place, turn the vertical connection positioning rod upward so that the upper part of the vertical connection positioning rod is inserted into the positioning insertion hole at the bottom of the limiting head, so that the limiting head can be limited and fixed. Such a structure is simple. Specific embodiment 5:

[0048] This embodiment adds a dust blowing mechanism 7 on the basis of the specific embodiment 3. A dust blowing mechanism 7 is also arranged between the support cylinder body 41 and the middle support roller 5.

[0049] It can blow away the dust on the surface of the copper foil before processing. Specific Embodiment 6:

[0051] This embodiment further describes the dust blowing mechanism 7 on the basis of Specific Embodiment 5. The dust blowing mechanism 7 is arranged at the front of the conveying path of the copper foil. The dust blowing mechanism 7 includes an upper dust blowing port and a lower dust blowing port, and the upper dust blowing port and the lower dust blowing port are respectively located above and below the copper foil conveying path. Specific Embodiment 7:

[0053] This embodiment further describes the end pulling mechanism 6 on the basis of Specific Embodiment 2. The end pulling mechanism 6 includes a winding mechanism 61, an upper fixed roller row 62 and a lower sliding roller row 63. The winding mechanism 6 is arranged at the discharging end. The upper fixed roller row 62 and the lower sliding roller row 63 are arranged in front of the winding mechanism 61. The upper fixed roller row 62 and the lower sliding roller row 63 are arranged side by side, and the rollers of the upper fixed roller row 62 and the rollers of the lower sliding roller row 63 are staggered. The support plate of the lower sliding roller row 63 is slidably connected to the equipment installation back plate through a slide rail.

[0054] Because welding takes time, by the up and down sliding of the lower sliding roller row of the end pulling mechanism, sufficient welding time can be left. When the lower sliding roller row slides upward and approaches the upper fixed roller row, the winding mechanism will still continue to wind, but since the distance between the upper fixed roller row and the lower sliding roller row is closer, the stroke becomes shorter, and the winding mechanism winds the extra part, so it will not pull the copper foil at the welding table backward. When the lower sliding roller row slides downward and moves away from the upper fixed roller row, the distance between the upper fixed roller row and the lower sliding roller row becomes farther, and it can pull the copper foil at the welding table backward. Through the cyclic operation of such a mechanism, the pulling process of the copper foil moving backward after staying at the welding table for a period of time can be realized. Specific Embodiment 8:

[0056] This embodiment further describes the welding table 1 on the basis of Specific Embodiment 1. The surface of the welding table 1 is a glass support table surface, and welding table receiving rollers 11 and welding table feeding rollers 12 are respectively arranged on both sides of the welding table 1. Specific Embodiment 9:

[0058] This embodiment further describes the welding table 1 on the basis of Specific Embodiment 1. At the equipment installation back plate at the inner end of the welding table 1, there is an electrode ear feeding port, and a cylinder type pushing structure 8 is arranged at the inner end of the electrode ear feeding port.

[0059] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A copper foil conductor lug welding device, characterized in that: The invention comprises a roller copper foil conveying mechanism and a laser welding mechanism, wherein the laser welding mechanism is arranged in the middle of the roller copper foil conveying mechanism, and the laser welding mechanism comprises a welding table (1), an optical fiber galvanometer welding machine (2) and a conductive electrode ear pressing mechanism (3), wherein the optical fiber galvanometer welding machine (2) is arranged above the welding table (1), and the conductive electrode ear pressing mechanism (3) is arranged between the optical fiber galvanometer welding machine (2) and the welding table (1).

2. The copper foil conductor ear welding equipment according to claim 1, characterized in that: The roller-type copper foil conveying mechanism comprises a feed-end copper foil reel support mechanism (4), an intermediate support roller (5) and a terminal pulling mechanism (6) which are arranged in sequence from front to back.

3. The copper foil conductor ear welding equipment according to claim 2, characterized in that: The feed end copper foil roll support mechanism (4) comprises a support cylinder (41) and a copper foil roll limiting mechanism (42); the support cylinder (41) is arranged at the lower part of the feed end of the equipment installation back plate; the copper foil roll limiting mechanism (42) comprises a limiting head (421) and a limiting head positioning mechanism (422); the limiting head (421) is arranged at the outer end of the support cylinder (41); the limiting head (421) is detachably connected to the support cylinder (41) via the limiting head positioning mechanism (422).

4. The copper foil conductor ear welding equipment according to claim 3, characterized in that: The limit head (421) is plugged into the outer end of the support cylinder (41); a positioning plug hole is provided at the bottom of the limit head (421); the limit head positioning mechanism (422) comprises a horizontal telescopic support rod and a vertical connection positioning rod; the inner end of the horizontal telescopic support rod is fixedly connected to the equipment installation back plate; the vertical connection positioning rod is arranged at the outer end of the horizontal telescopic support rod; the vertical positioning rod is threadedly connected to the horizontal telescopic support rod; the upper part of the vertical positioning rod is adapted to the positioning plug hole; when the vertical positioning rod is at the uppermost position, its upper part is inserted into the positioning plug hole.

5. The copper foil conductor ear welding equipment according to claim 3, characterized in that: A soot blowing mechanism (7) is also provided between the support cylinder (41) and the middle support roller (5).

6. The copper foil conductor ear welding equipment according to claim 5, characterized in that: The soot blowing mechanism (7) is arranged at the front part of the copper foil conveying path, and the soot blowing mechanism (7) comprises an upper soot blowing port and a lower soot blowing port, wherein the upper soot blowing port and the lower soot blowing port are respectively located above and below the copper foil conveying path.

7. The copper foil conductor ear welding equipment according to claim 2, characterized in that: The end material pulling mechanism (6) comprises a winding mechanism (61), an upper fixed roller row (62) and a lower sliding roller row (63); the winding mechanism (6) is arranged at the material discharging end; the upper fixed roller row (62) and the lower sliding roller row (63) are arranged in front of the winding mechanism (61); the upper fixed roller row (62) and the lower sliding roller row (63) are arranged side by side; the roller body of the upper fixed roller row (62) and the roller body of the lower sliding roller row (63) are arranged alternately; and the support plate of the lower sliding roller row (63) is slidably connected to the equipment mounting back plate via a slide rail.

8. The copper foil conductor lug welding equipment according to claim 1, characterized in that: The surface of the welding table (1) is a glass support table top, and welding table receiving rollers (11) and welding table feeding rollers (12) are respectively provided on two sides of the welding table (1).

9. The copper foil conductor ear welding equipment according to claim 1, characterized in that: A conductive electrode lug feeding port is provided at the equipment installation back plate at the inner end of the welding table (1), and a cylinder-type pushing structure (8) is provided at the inner end of the conductive electrode lug feeding port.

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