A wire supply device for battery cell string welding

Abstract

The present invention relates to the technical field of battery cell production, and in particular to a wire feeding device for battery cell string welding; the device comprises a coil rack, a traction wire support assembly, a wire cutting assembly and a welding table; the coil rack is used to carry an external welding wire coil, the traction wire support assembly comprises a slide, a traction mechanism and a wire supporting mechanism, the traction mechanism is slidably connected to the slide, and the wire cutting assembly is located between the traction mechanism and the wire supporting mechanism; the wire supporting mechanism comprises a loading plate, a trough body and an inner supporting member, the loading plate is arranged on the slide, the trough bodies are arranged along the width direction of the loading plate and penetrate the loading plate, the inner supporting member is arranged in the trough body, the end of the external welding wire coil is clamped and pulled out through the traction mechanism, the welding wire slides in the trough body, the wire cutting assembly cuts the pulled out welding wire into welding wire segments so that the welding wire segments are separated from the welding wire coil, the end of the external coil is always supported by the inner supporting member, so that the traction mechanism is convenient to clamp the end of the welding wire coil again and pull it out, thereby improving production efficiency and meeting production requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell production, and in particular to a wire supply device for battery cell series welding. Background Art

[0002] Pulling out the welding wire from the welding wire coil and cutting it into welding wire segments as required, and then supplying the welding wire segments to the surface of the battery cell to be string welded is the main production link of the battery cell string welding. The processing requirements are different, and the lengths of the welding wire segments are different. When a processing method is adopted to weld two adjacent battery cells in a plurality of series-connected battery cells separately, a larger number of welding wire segments are required to be supplied to the two adjacent battery cells in sequence along the length direction of the plurality of battery cells, so the wire supply frequency is increased. Normally, the end of the welding wire coil is in a drooping state under the action of gravity. Therefore, when the traction mechanism repeatedly clamps the end of the welding wire coil, it needs to be repeatedly lifted and lowered to clamp the end of the welding wire and then pull out the welding wire to complete the cutting, resulting in a long production cycle and the disadvantage of energy consumption. It cannot meet the production requirements and needs to be improved. Summary of the invention

[0003] In order to overcome the shortcomings of energy consumption and long production cycle in the wire feeding process in the prior art, the purpose of the present invention is to provide a wire feeding device for battery cell string welding to achieve the purpose of reducing energy consumption and shortening the production cycle.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] A wire supply device for battery cell string welding, comprising a material coil rack, a wire pulling and supporting assembly, a wire cutting assembly and a welding station;

[0006] The coil rack is used to carry external welding wire coils, the traction and wire-supporting assembly includes a slide, a traction mechanism and a wire-supporting mechanism, the traction mechanism is slidably connected to the slide, and the wire-cutting assembly is located between the traction mechanism and the wire-supporting mechanism and is arranged close to the wire-supporting mechanism;

[0007] The wire supporting mechanism comprises a material carrier plate, a trough body and an inner supporting member, wherein the material carrier plate is arranged on the slide, the trough body is arranged along the width direction of the material carrier plate and penetrates the material carrier plate, the inner supporting member is arranged in the trough body, the end of the external welding wire coil is clamped and pulled out through the traction mechanism, the welding wire slides in the trough body, the wire cutting assembly cuts the pulled welding wire into welding wire segments of preset length so that the welding wire segments are separated from the welding wire coil, and the inner supporting member supports the end of the external welding wire coil;

[0008] The welding station is located below the wire cutting assembly.

[0009] Furthermore, the traction mechanism includes a first mounting plate, a wire clamping member and a first driving member, the first driving member drives the first mounting plate to move, and the wire clamping member is arranged on the first mounting plate;

[0010] The wire supporting mechanism further comprises a second driving member, which drives the material carrier plate to move, and the central axis of the trough body coincides with or is parallel to the central axis of the wire clamping member.

[0011] Furthermore, the wire clamping component includes a second mounting plate, a wire clamping cylinder and a first pressure rod. The second mounting plate is fixed to the first mounting plate. The wire clamping cylinder is arranged on the second mounting plate and drives the first pressure rod to swing so that the first pressure rod presses the end of the external welding wire roll on the second mounting plate.

[0012] Furthermore, the second mounting plate is provided with a limiting groove, the first pressure rod is accommodated in the limiting groove, and the first pressure rod is rotatably connected to the limiting groove.

[0013] Furthermore, the inner support member includes a feed section, a middle section and a discharge section which are connected in sequence, the feed section is arranged close to the material roll rack, and the upper surface of the feed section is higher than the upper surface of the discharge section.

[0014] Furthermore, the wire cutting assembly includes a bracket, a wire pressing piece and a shearing piece. The wire pressing piece and the shearing piece are both arranged on the bracket and located directly above the welding table. The wire pressing piece is arranged close to the material coil rack.

[0015] Furthermore, the wire pressing member includes a wire plate, a second pressure rod and a second pressure rod driving source. The wire plate is arranged on a bracket, and the second pressure rod driving source drives the second pressure rod to approach or move away from the wire plate so that the external welding wire is pressed on the wire plate by the second pressure rod.

[0016] Furthermore, the wire pressing member also includes an upper pressing plate, the wire board is provided with a wire groove, the wire groove is arranged along the width direction of the wire board and penetrates the wire board, and a gap is arranged between the upper pressing plate and the wire board.

[0017] Furthermore, the shearing member includes a lower cutter, an upper cutter and an upper cutter driving member, the lower cutter is arranged on a bracket, and the upper cutter driving member is arranged on the bracket and drives the upper cutter to move towards or away from the lower cutter.

[0018] Furthermore, there are two groups of traction wire support assemblies, and the two groups of traction wire support assemblies are respectively located on both sides of the width direction of the welding platform.

[0019] The beneficial effects of the present invention are as follows: a traction and wire supporting assembly consisting of a slide, a traction mechanism and a wire supporting mechanism is arranged, the wire supporting mechanism is arranged close to the material coil rack, the wire cutting assembly is located between the traction mechanism and the wire supporting mechanism and close to the wire supporting mechanism, the traction mechanism slides along the slide to pull out the external welding wire, the welding wire body slides along the trough body, the wire cutting assembly cuts the welding wire in and out, the end of the external material coil is always supported by the inner supporting piece, which makes it convenient for the traction mechanism to clamp the end of the welding wire coil again and pull it out, thereby improving production efficiency and meeting production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1-1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 1-2 It is a schematic diagram of the planar structure of the present invention;

[0022] Figure 2-1 It is a schematic diagram of the three-dimensional structure of the traction wire assembly of the present invention;

[0023] Figure 2-2 It is a schematic diagram of the traction mechanism structure of the present invention;

[0024] Figure 2-3 It is a schematic diagram of the structure of the wire clamping member of the present invention;

[0025] Figure 2-4 It is a schematic diagram of the structure of the tow wire mechanism of the present invention;

[0026] Figure 2-5 It is a schematic diagram of the structure of the carrier plate and the tank body of the present invention;

[0027] Figure 2-6 It is a schematic diagram of the structure of the inner support member of the present invention;

[0028] Figure 3-1 It is a schematic diagram of the three-dimensional structure of the shredding assembly of the present invention;

[0029] Figure 3-2 It is a schematic cross-sectional structural diagram of the slicing assembly of the present invention;

[0030] Figure 3-3 for Figure 3-2 A schematic diagram of the enlarged structure of the middle part A;

[0031] Figure 3-4 It is a schematic diagram of the disassembled structure of the wire pressing part of the present invention.

[0032] Reference numerals include:

[0033] 1-material roll rack 2-traction wire support assembly 21-slide

[0034] 22—traction mechanism 221—first mounting plate 222—wire clamp

[0035] 2221—Second mounting plate 22211—Limiting groove 2222—Wire clamping cylinder

[0036] 2223—first pressing rod 223—first sliding seat 224—first lifting driving source

[0037] 23 - thread support mechanism 231 - material loading plate 2311 - front part

[0038] 2312—rear part 232—slot body 233—inner support

[0039] 2331—feeding section 2332—middle section 2333—discharging section

[0040] 234 - second slide 235 - second lifting drive source 3 - wire cutting assembly

[0041] 31—Bracket 32—Wire Pressing Part 321—Wire Plate

[0042] 3211—Line slot 322—Second pressure rod 323—Second pressure rod driving source

[0043] 324—upper pressing plate 33—shearing piece 331—lower cutting knife

[0044] 332—upper cutter 333—upper cutter driving member 4—welding station. DETAILED DESCRIPTION

[0045] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0046] See also Figure 1-1 to Figure 2-6 A wire feeding device for battery cell string welding of the present invention comprises a material coil rack 1, a wire pulling and supporting assembly 2, a wire cutting assembly 3 and a welding station 4;

[0047] The coil rack 1 is used to carry external welding wire coils, the traction wire support assembly 2 includes a slide 21, a traction mechanism 22 and a wire support mechanism 23, the traction mechanism 22 is slidably connected to the slide 21, and the wire cutting assembly 3 is located between the traction mechanism 22 and the wire support mechanism 23 and is arranged close to the wire support mechanism 23;

[0048] The wire supporting mechanism 23 includes a carrier plate 231, a trough body 232 and an inner supporting member 233. The carrier plate 231 is arranged on the slide 21. The trough body 232 is arranged along the width direction of the carrier plate 231 and penetrates the carrier plate 231. The inner supporting member 233 is arranged in the trough body 232. The end of the external welding wire coil is clamped and pulled out through the traction mechanism 22. The welding wire slides in the trough body 232. The wire cutting assembly 3 cuts the pulled welding wire into a welding wire segment of a preset length so that the welding wire segment is separated from the welding wire coil. The inner supporting member 233 supports the end of the external welding wire coil.

[0049] The welding station 4 is located below the wire cutting assembly 3 .

[0050] Specifically, in this embodiment, the material coil rack 1 is provided with a plurality of rotating shaft assemblies, each rotating shaft assembly is used to carry an external welding wire material coil, the traction mechanism 22 and the wire supporting mechanism 23 are both slidably connected to the slide 21, and the spacing between the traction mechanism 22 and the wire supporting mechanism 23 is conveniently adjusted to meet different production and processing requirements, and the wire cutting assembly 3 is fixedly arranged relative to the slide 21, and the wire cutting assembly 3 is located between the traction mechanism 22 and the wire supporting mechanism 23. In the initial state, the end of each welding wire material coil passes through the wire supporting mechanism 23 and the wire cutting assembly 3, and is then clamped by the traction mechanism 22. A number of welding wire ends are held and pulled out to a preset length at the same time, the main body of the welding wire slides in the groove body 232, and then the tangent component 3 cuts multiple welding wires into welding wire segments of preset length, so that the welding wire segments are separated from the external welding wire coil, and the welding wire segments fall to the upper surface of the external battery cell on the surface of the welding table 4, and the end of the external welding wire coil stays on the inner support 233 of the groove body 232. The inner support 233 supports the end of the welding wire coil, which facilitates the traction mechanism 22 to return to the initial position and clamp the end of the welding wire coil again, thereby shortening the production cycle.

[0051] By setting up a traction and wire supporting assembly 2 composed of a slide 21, a traction mechanism 22 and a wire supporting mechanism 23, the wire supporting mechanism 23 is arranged close to the material coil rack 1, and the wire cutting assembly 3 is located between the traction mechanism 22 and the wire supporting mechanism 23 and close to the wire supporting mechanism 23. The traction mechanism 22 slides along the slide 21 to pull out the external welding wire, and the welding wire body slides along the groove body 232. The wire cutting assembly 3 cuts the welding wire in and out, and the end of the external material coil is always supported by the inner supporting piece 233, which makes it convenient for the traction mechanism 22 to clamp the end of the welding wire coil again and pull it out, thereby improving production efficiency and meeting production requirements.

[0052] The traction mechanism 22 includes a first mounting plate 221, a wire clamping member 222 and a first driving member, wherein the first driving member drives the first mounting plate 221 to move, and the wire clamping member 222 is arranged on the first mounting plate 221. Preferably, the number of the wire clamping members 222 is several, and two adjacent wire clamping members 222 are arranged at a distance, and one wire clamping member 222 clamps the end of a welding wire coil. The first driving member includes a first slide 223, a first horizontal driving source (not shown), and a first lifting driving source 224. The first horizontal driving source drives the first slide 223 to move horizontally along the slide 21, and the first lifting driving source 224 is arranged on the first slide 223 and drives the first mounting plate 221 to move up and down, that is, to realize the lifting and horizontal movement of the wire clamping member 222;

[0053] The wire supporting mechanism 23 also includes a second driving member, which drives the carrier plate 231 to move. The central axis of the groove body 232 coincides with or is parallel to the central axis of the wire clamping member 222. There are multiple groove bodies 232, and two adjacent groove bodies 232 are arranged at a distance. One groove body 232 cooperates with one wire clamping member 222 to control the stability of the sliding direction during the external welding wire traction process. The second driving member includes a second slide seat 234, a second horizontal driving source (not shown), and a second lifting driving source 225. The second horizontal driving source drives the second slide seat 234 to move horizontally along the slide table 21, and the second lifting driving source 225 drives the carrier plate 231 to rise and fall, that is, the carrier plate 231 cooperates with the wire clamping member 222 to move in the longitudinal and horizontal directions at the same time, meeting the production requirements.

[0054] The wire clamping member 222 includes a second mounting plate 2221, a wire clamping cylinder 2222 and a first pressure rod 2223. The second mounting plate 2221 is fixedly mounted on the first mounting plate 221. The wire clamping cylinder 2222 is disposed on the second mounting plate 2221 and drives the first pressure rod 2223 to swing so that the first pressure rod 2223 presses the end of the external welding wire roll on the second mounting plate 2221. Preferably, the second mounting plate 2221 is fixed to the first mounting plate 221 by a screw connector. The number of wire clamping cylinders 2222 is multiple, the number of first pressure rods 2223 is multiple, one wire clamping cylinder 2222 drives one first pressure rod 2223 to swing, and one first pressure rod 2223 presses the end of one external welding wire roll on the second mounting plate 2221 for fixing purpose.

[0055] The second mounting plate 2221 is provided with a limiting groove 22211, and the first pressure rod 2223 is accommodated in the limiting groove 22211. The first pressure rod 2223 is rotatably connected to the limiting groove 22211. There are multiple limiting grooves 22211, and one first pressure rod 2223 is swingably connected in one limiting groove 22211, further ensuring the accuracy of clamping the end of the external material roll each time and the stability of the pulling direction.

[0056] The inner support member 233 includes a feed section 2331, a middle section 2332 and a discharge section 2333 which are connected in sequence. The feed section 2331 is arranged close to the coil rack 1. The upper surface of the feed section 2331 is higher than the upper surface of the discharge section 2333. Preferably, the middle section 2332 is connected to the feed section 2331 and the discharge section 2333 in a concave arc shape. The end of the welding wire coil stays at the position of the discharge section 2333. The feed section 2331 supports the body of the welding wire coil to prevent the end of the welding wire coil from sliding out of the groove body 232. The concave arc-shaped middle section 2332 is arranged to further make the end of the welding wire coil fit into the inner support member 233, thereby enhancing the supporting effect.

[0057] The loading plate 231 includes a front portion 2311 and a rear portion 2312. The thickness of the front portion 2311 is smaller than that of the rear portion 2312. The front portion 2311 is arranged close to the traction mechanism 22. The groove body 232 is arranged at the front portion 2311 and the rear portion 2312. The depth of the groove body 232 at the front portion 2311 is shallow, which is convenient for clamping the end of the supported welding wire and facilitating production.

[0058] See also Figure 3-1 to Figure 3-4 The wire cutting assembly 3 includes a bracket 31, a wire pressing piece 32 and a shearing piece 33. The wire pressing piece 32 and the shearing piece 33 are both arranged on the bracket 31 and located directly above the welding platform 4. The wire pressing piece 32 is arranged close to the material coil rack 1. Preferably, the bracket 31 is provided with a long hole, and the long hole penetrates the bracket 31 along the thickness direction of the bracket 31. The wire pressing piece 32 is installed in the long hole. The end of the external welding wire coil passes through the wire supporting mechanism 23 and then passes through the wire pressing piece 32 and the shearing piece 33 in turn, and is clamped and pulled out by the traction mechanism 22. When the traction mechanism 22 moves to the preset position, the wire pressing piece 32 presses the welding wire body, and the shearing piece 33 cuts the welding wire to complete the wire cutting purpose.

[0059] The wire pressing member 32 includes a wire plate 321, a second pressure rod 322 and a second pressure rod driving source 323. The wire plate 321 is arranged on the bracket 31. The second pressure rod driving source 323 drives the second pressure rod 322 to approach or move away from the wire plate 321 so that the external welding wire is pressed on the wire plate 321 by the second pressure rod 322. Preferably, the number of the second pressure rod driving sources 323 is several, and the number of the second pressure rods 322 is multiple. One second pressure rod driving source 323 drives one second pressure rod 322 to rise and fall, and one second pressure rod 322 presses and fixes an external welding wire, thereby achieving the purpose of pressing and fixing the external welding wire and improving the stability of the cutting quality.

[0060] The wire pressing member 32 also includes an upper pressing plate 324. The wire plate 321 is provided with a wire groove 3211. The wire groove 3211 is arranged along the width direction of the wire plate 321 and penetrates the wire plate 321. The upper pressing plate 324 and the wire plate 321 are spaced apart. The wire groove 3211 includes a feed port and a discharge port. The diameter of the feed port is larger than that of the discharge port, so as to facilitate the end of the external welding wire to enter the wire groove 3211. The second pressing rod 322 is located above the feed port. The channel enclosed by the upper pressing plate 324 and the wire groove 3211 limits the external welding wire to ensure the stability of the direction during the traction of the external welding wire.

[0061] The shearing piece 33 includes a lower cutter 331, an upper cutter 332 and an upper cutter driving piece 333. The lower cutter 331 is arranged on the bracket 31. The upper cutter driving piece 333 is arranged on the bracket 31 and drives the upper cutter 332 to move towards or away from the lower cutter 331. The upper cutter driving piece 333 adopts a servo motor to drive the cam rotation structure to realize the reciprocating lifting movement of the upper cutter 332. When the upper cutter 332 intersects with the lower cutter 331, the welding wire is cut. When the upper cutter 332 is away from the lower cutter 331, the welding wire is clamped and pulled out by the traction mechanism 22.

[0062] See also Figure 1-1 and Figure 1-2 There are two groups of traction wire support assemblies 2, which are respectively located on both sides of the width direction of the welding table 4. In actual production, one group of traction wire support assemblies 2 clamps 9 welding wires, and the other group of traction wire support assemblies 2 clamps 10 welding wires, which meets the production requirements.

[0063] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A wire feeding device for battery cell string welding, characterized in that: It comprises a material coil stand (1), a wire pulling and supporting assembly (2), a wire cutting assembly (3) and a welding platform (4); The coil rack (1) is used to carry an external welding wire coil, the traction and wire supporting assembly (2) comprises a slide (21), a traction mechanism (22) and a wire supporting mechanism (23), the traction mechanism (22) is slidably connected to the slide (21), and the wire cutting assembly (3) is located between the traction mechanism (22) and the wire supporting mechanism (23) and is arranged close to the wire supporting mechanism (23); The wire supporting mechanism (23) comprises a material carrier plate (231), a trough body (232), an inner supporting member (233) and a second driving member; the material carrier plate (231) is arranged on the slide table (21); the trough body (232) is arranged along the width direction of the material carrier plate (231) and penetrates the material carrier plate (231); the inner supporting member (233) is arranged in the trough body (232); the end of the external welding wire coil is clamped and pulled out via the traction mechanism (22); the welding wire slides in the trough body (232); the wire cutting assembly (3) cuts the pulled welding wire into welding wire segments of a preset length so that the welding wire segments are separated from the welding wire coil; the inner supporting member (233) supports the end of the external welding wire coil; The welding platform (4) is located below the wire cutting assembly (3); The inner support member (233) comprises a feed section (2331), a middle section (2332) and a discharge section (2333) which are connected in sequence, the feed section (2331) is arranged close to the material roll rack (1), and the upper surface of the feed section (2331) is higher than the upper surface of the discharge section (2333); The middle section (2332) is in a concave arc shape and connects the feeding section (2331) and the discharging section (2333); The second driving member comprises a second slide seat (234), a second horizontal driving source, and a second lifting driving source (225); the second horizontal driving source drives the second slide seat (234) to move horizontally along the slide table (21), and the second lifting driving source (225) drives the carrier plate (231) to move up and down; The material carrying plate (231) comprises a front portion (2311) and a rear portion (2312); the thickness of the front portion (2311) is smaller than the thickness of the rear portion (2312); the front portion (2311) is arranged close to the traction mechanism (22); and the groove body (232) is arranged at the front portion (2311) and the rear portion (2312).

2. The wire feeding device for battery cell string welding according to claim 1, characterized in that: The traction mechanism (22) comprises a first mounting plate (221), a wire clamping member (222) and a first driving member, wherein the first driving member drives the first mounting plate (221) to move, and the wire clamping member (222) is arranged on the first mounting plate (221); The wire supporting mechanism (23) further comprises a second driving member, which drives the material carrying plate (231) to move, and the central axis of the groove body (232) coincides with or is parallel to the central axis of the wire clamping member (222).

3. The wire feeding device for battery cell string welding according to claim 2, characterized in that: The wire clamping member (222) comprises a second mounting plate (2221), a wire clamping cylinder (2222) and a first pressure rod (2223); the second mounting plate (2221) is fixedly mounted on the first mounting plate (221); the wire clamping cylinder (2222) is mounted on the second mounting plate (2221) and drives the first pressure rod (2223) to swing so that the first pressure rod (2223) presses the end of the external welding wire coil on the second mounting plate (2221).

4. The wire supply device for battery cell string welding according to claim 3, characterized in that: The second mounting plate (2221) is provided with a limiting groove (22211), the first pressing rod (2223) is accommodated in the limiting groove (22211), and the first pressing rod (2223) is rotatably connected to the limiting groove (22211).

5. The wire feeding device for battery cell string welding according to claim 1, characterized in that: The wire cutting assembly (3) comprises a support (31), a wire pressing piece (32) and a shearing piece (33); the wire pressing piece (32) and the shearing piece (33) are both arranged on the support (31) and located directly above the welding platform (4); the wire pressing piece (32) is arranged close to the material coil rack (1).

6. The wire supply device for battery cell string welding according to claim 5, characterized in that: The wire pressing member (32) comprises a wire plate (321), a second pressure rod (322) and a second pressure rod driving source (323); the wire plate (321) is arranged on a bracket (31); the second pressure rod driving source (323) drives the second pressure rod (322) to approach or move away from the wire plate (321) so that the external welding wire is pressed on the wire plate (321) by the second pressure rod (322).

7. The wire feeding device for battery cell string welding according to claim 6, characterized in that: The wire pressing member (32) further comprises an upper pressing plate (324); the wire plate (321) is provided with a wire groove (3211); the wire groove (3211) is arranged along the width direction of the wire plate (321) and penetrates the wire plate (321); and a gap is arranged between the upper pressing plate (324) and the wire plate (321).

8. The wire feeding device for battery cell string welding according to claim 6, characterized in that: The shearing member (33) comprises a lower cutter (331), an upper cutter (332) and an upper cutter driving member (333); the lower cutter (331) is arranged on the bracket (31); and the upper cutter driving member (333) is arranged on the bracket (31) and drives the upper cutter (332) to move in a direction approaching or away from the lower cutter (331).

9. The wire feeding device for battery cell string welding according to claim 1, characterized in that: The number of the pulling wire support components (2) is two groups, and the two groups of the pulling wire support components (2) are respectively located on both sides of the welding platform (4) in the width direction.

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