Pre-tensioning device for current collector processing device and battery current collector production equipment

Abstract

The embodiment of the utility model discloses a pre-tensioning device for a current collector processing device and battery current collector production equipment. The pre-tensioning device comprises a feeding mechanism and a pre-tensioning mechanism, the feeding mechanism comprises a first feeding roller and a second feeding roller which are oppositely arranged, the coiled material is arranged between the first feeding roller and the second feeding roller in a penetrating mode, and the coiled material can be conveyed when at least one of the first feeding roller and the second feeding roller rotates; the pre-tensioning mechanism comprises a first pre-tensioning roller and a second pre-tensioning roller which are oppositely arranged, and a metal net formed by coiled material processing is arranged between the first pre-tensioning roller and the second pre-tensioning roller in a penetrating mode and can be pre-tensioned and flattened when at least one of the first pre-tensioning roller and the second pre-tensioning roller rotates. The pre-stretching speed of the pre-stretching mechanism on the metal net is higher than the conveying speed of the feeding mechanism on the coiled material, so that the metal net can be stretched uniformly, the mesh structure on the metal net is uniform, and the forming quality of the metal net is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery current collector technology, and in particular to a pre-stretching device for current collector processing equipment and battery current collector production equipment. Background Technology

[0002] Battery current collectors are a crucial component of batteries, responsible for carrying the positive and negative electrode materials and collecting the current generated by the active materials during charging and discharging. The mesh size and filament diameter of the current collector's pore structure are important indicators of its performance, and the uniformity of the mesh structure also affects its mechanical strength. An uneven mesh structure can cause the current collector to deform or crack during battery charging and discharging, reducing the battery's safety and stability.

[0003] During the process of forming a mesh structure on a roll material, the equipment used to produce current collectors may damage the original physical dimensions of the material, resulting in insufficient uniformity of the mesh structure on the metal mesh. Utility Model Content

[0004] The purpose of this invention is to propose a pre-stretching device for current collector processing equipment and a battery current collector production equipment, which aims to solve the problem that existing current collector production equipment will damage the original physical dimensions of the wire mesh during the process of forming a mesh structure on the wire mesh, resulting in insufficient uniformity of the mesh structure on the metal wire mesh.

[0005] In a first aspect, this utility model provides a pre-tensioning device for a current collector processing apparatus, the pre-tensioning device comprising a feeding mechanism and a pre-tensioning mechanism;

[0006] The feeding mechanism includes a first feeding roller and a second feeding roller arranged opposite to each other, the roll material is passed between the first feeding roller and the second feeding roller, and the roll material can be conveyed when at least one of the first feeding roller and the second feeding roller rotates;

[0007] The pre-stretching mechanism includes a first pre-stretching roller and a second pre-stretching roller arranged opposite to each other. The metal mesh formed by the processing of the roll material is passed between the first pre-stretching roller and the second pre-stretching roller, and can pre-stretch and flatten the metal mesh when at least one of the first pre-stretching roller and the second pre-stretching roller rotates.

[0008] The pre-stretching speed of the pre-stretching mechanism on the metal mesh is greater than the conveying speed of the feeding mechanism on the roll material.

[0009] In one embodiment, the feeding mechanism further includes a feeding frame and a feeding motor. The first feeding roller and the second feeding roller are both rotatably mounted on the feeding frame. The feeding motor is connected to the first feeding roller and is used to drive the first feeding roller to rotate.

[0010] The feeding mechanism further includes a first clamping assembly, and the second feeding roller is mounted on the feeding frame through the first clamping assembly. The first clamping assembly can release or clamp the second feeding roller so that the second feeding roller and the first feeding roller are in clearance fit or abutment fit.

[0011] In one embodiment, the first clamping assembly is an eccentric clamp, and two such clamps are provided;

[0012] The two first clamping components are respectively disposed at both ends of the second feeding roller.

[0013] In one embodiment, the pre-tensioning mechanism further includes a pre-tensioning frame and a pre-tensioning motor. The first pre-tensioning roller and the second pre-tensioning roller are both rotatably mounted on the pre-tensioning frame. The pre-tensioning motor is connected to the first pre-tensioning roller and is used to drive the first pre-tensioning roller to rotate.

[0014] The pre-tensioning mechanism further includes a second clamping assembly, through which the second pre-tensioning roller is mounted on the pre-tensioning frame. The second clamping assembly can release or clamp the second pre-tensioning roller so that the second pre-tensioning roller is in clearance fit or abutment fit with the first pre-tensioning roller.

[0015] In one embodiment, the second clamping assembly is an eccentric clamp, and two of them are provided;

[0016] The two second clamping components are respectively disposed at both ends of the second pre-tensioning roller.

[0017] In one embodiment, the pre-tensioning mechanism further includes a transmission assembly, the pre-tensioning motor is connected to the first pre-tensioning roller via the transmission assembly, and the pre-tensioning motor is mounted on the pre-tensioning frame and located inside the pre-tensioning frame;

[0018] The transmission assembly includes a first pre-tension pulley, a second pre-tension pulley, and a pre-tension transmission belt. The first pre-tension pulley is rotatably disposed on the outside of the pre-tension frame and coaxially connected to the pre-tension motor. The second pre-tension pulley is rotatably disposed on the outside of the pre-tension frame and coaxially connected to the first pre-tension roller. The pre-tension transmission belt is wound between the first pre-tension pulley and the second pre-tension pulley.

[0019] In one embodiment, the pre-tensioning mechanism further includes a first pre-tensioning tooth and a second pre-tensioning tooth;

[0020] The first pre-tension tooth is rotatably disposed on the outside of the pre-tension frame and coaxially connected with the first pre-tension roller. The second pre-tension tooth is rotatably disposed on the outside of the pre-tension frame and coaxially connected with the second pre-tension roller. The first pre-tension tooth and the second pre-tension tooth mesh with each other.

[0021] In one embodiment, the pre-tensioning device further includes a tension detection mechanism, which is disposed between the feeding mechanism and the pre-tensioning mechanism, and is triangularly distributed with the feeding mechanism and the pre-tensioning mechanism; the tension detection mechanism includes a tension roller and a tension detector, the tension roller is used to guide the metal mesh, and the tension detector is disposed on the tension roller and used to sense the pressure value of the metal mesh; and / or,

[0022] The pre-stretching device further includes a first guide roller, which is disposed in front of the feeding mechanism and is used to guide the roll material to be conveyed between the first feeding roller and the second feeding roller.

[0023] Secondly, this utility model also provides a battery current collector production equipment, which includes a current collector processing device and a pre-stretching device, wherein the pre-stretching device is a pre-stretching device for the current collector processing device in any of the above embodiments.

[0024] The feeding mechanism is located before the current collector processing device and is used to feed the current collector processing device with roll material. The current collector processing device is used to process the roll material into a metal mesh. The pre-stretching mechanism is located after the current collector processing device and is used to pre-stretch the metal mesh.

[0025] In one embodiment, the current collector processing device includes a frame, a first cutting tool, a second cutting tool, and a drive mechanism;

[0026] The feeding mechanism is used to convey the roll material into the cutting space formed by the first cutter and the second cutter. The first cutting edge of the first cutter is a flat blade, and the second cutting edge of the second cutter is toothed.

[0027] The drive mechanism is mounted on the frame and is used to drive one of the first cutter and the second cutter to move relative to the other. The first cutter can move closer to or away from the second cutter along a straight line in a first direction, and the first cutter can also reciprocate along a straight line in a second direction relative to the second cutter, so as to process the roll material in the cutting space into a metal mesh. The first direction and the second direction are set at an angle.

[0028] The present invention has the following beneficial effects:

[0029] The pre-stretching device for current collector processing and the battery current collector production equipment of this utility model have a pre-stretching speed of the pre-stretching mechanism on the metal mesh that is greater than the conveying speed of the feeding mechanism on the roll material. This allows the metal mesh to be stretched evenly, resulting in a uniform mesh structure and thus ensuring the forming quality of the metal mesh. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] in:

[0032] Figure 1 A schematic diagram of a battery current collector production equipment in one embodiment. Figure 1 .

[0033] Figure 2 A schematic diagram of a battery current collector production equipment in one embodiment. Figure 2 .

[0034] Figure 3 A schematic diagram of a battery current collector production equipment in one embodiment. Figure 3 .

[0035] Figure 4 This is a schematic diagram of the pre-stretching device and the current collector processing device in a battery current collector production equipment according to one embodiment. Figure 1 .

[0036] Figure 5 This is a schematic diagram of the pre-stretching device and the current collector processing device in a battery current collector production equipment according to one embodiment. Figure 2 .

[0037] Figure 6 for Figure 4 Side view of the pre-tensioning device and the current collector processing device shown.

[0038] Figure 7 for Figure 6 Sectional view of AA.

[0039] Figure 8 This is a schematic diagram of a current collector processing apparatus processing coiled material to form a metal mesh, according to one embodiment. Figure 1 .

[0040] Figure 9 This is a schematic diagram of a current collector processing apparatus processing coiled material to form a metal mesh, according to one embodiment. Figure 2 .

[0041] Figure 10 This is a schematic diagram of a current collector processing apparatus processing coiled material to form a metal mesh, according to one embodiment. Figure 3 .

[0042] Figure 11This is a schematic diagram of the tool setting of the first and second tools in a current collector machining apparatus according to an embodiment. Figure 1 .

[0043] Figure 12 This is a schematic diagram of the tool setting of the first and second tools in a current collector machining apparatus according to an embodiment. Figure 2 .

[0044] Reference numerals: 10, coil; 20, roll material; 21, mesh structure;

[0045] 100. Winding device;

[0046] 200. Current collector processing device; 210. Frame; 220. First cutting tool; 221. First cutting edge; 230. Second cutting tool; 231. Second cutting edge; 250. Drive mechanism;

[0047] 300. Support frame;

[0048] 400. Unwinding device;

[0049] 500, feeding mechanism; 510, first feeding roller; 520, second feeding roller; 530, feeding motor; 540, first guide roller; 550, feeding frame; 560, first clamping assembly;

[0050] 600, Pre-tensioning mechanism; 610, First pre-tensioning roller; 620, Second pre-tensioning roller; 630, Pre-tensioning frame; 640, Pre-tensioning motor; 650, Second clamping assembly; 660, Transmission assembly; 661, First pre-tensioning pulley; 662, Pre-tensioning transmission belt; 663, Second pre-tensioning pulley; 670, First pre-tensioning tooth; 680, Second pre-tensioning tooth;

[0051] 700. Tension detection mechanism; 710. Tension roller.

[0052] 800. Position detection device;

[0053] 900. Damping adjustment device; 910. Damping roller. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0055] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0056] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0057] Please see Figures 1 to 7 This utility model discloses a battery current collector production equipment, which is mainly used to produce metal mesh for current collectors. One embodiment of the battery current collector production equipment includes a current collector processing device 200 and a pre-stretching device. The pre-stretching device includes a feeding mechanism 500 and a pre-stretching mechanism 600. The feeding mechanism 500 is located before the current collector processing device 200 and is used to feed the current collector processing device 200 with a roll of material 20. The current collector processing device 200 processes the roll of material 20 into a metal mesh. The pre-stretching mechanism 600 is located after the current collector processing device 200 and is used to pre-stretch the metal mesh.

[0058] In this embodiment, the feeding mechanism 500 includes a first feeding roller 510 and a second feeding roller 520 disposed opposite to each other. The roll material 20 passes between the first feeding roller 510 and the second feeding roller 520 and is able to feed the roll material 20 when at least one of the first feeding roller 510 and the second feeding roller 520 rotates.

[0059] The pre-tensioning mechanism 600 includes a first pre-tensioning roller 610 and a second pre-tensioning roller 620 arranged opposite to each other. The metal mesh formed by processing the roll material 20 is passed between the first pre-tensioning roller 610 and the second pre-tensioning roller 620, and can pre-tension and flatten the metal mesh when at least one of the first pre-tensioning roller 610 and the second pre-tensioning roller 620 rotates. The pre-tensioning speed of the pre-tensioning mechanism 600 on the metal mesh is greater than the conveying speed of the feeding mechanism 500 on the roll material 20.

[0060] It is understandable that the pre-stretching speed of the pre-stretching mechanism 600 on the metal mesh is greater than the conveying speed of the feeding mechanism 500 on the roll 20, so that the metal mesh can be stretched evenly, making the mesh structure 21 on the metal mesh uniform. At the same time, the first pre-stretching roller 610 and the second pre-stretching roller 620 also flatten the metal mesh during the pre-stretching process, thereby ensuring the forming quality of the metal mesh.

[0061] In one embodiment, please refer to Figure 4 and Figure 5 The feeding mechanism 500 also includes a feeding frame 550 and a feeding motor 530. The first feeding roller 510 and the second feeding roller 520 are both rotatably mounted on the feeding frame 550. The feeding motor 530 is connected to the first feeding roller 510 and is used to drive the first feeding roller 510 to rotate. The feeding mechanism 500 also includes a first clamping assembly 560. The second feeding roller 520 is mounted on the feeding frame 550 through the first clamping assembly 560. The first clamping assembly 560 can release or clamp the second feeding roller 520 so that the second feeding roller 520 and the first feeding roller 510 are in clearance fit or abutment fit.

[0062] With this configuration, the first clamping assembly 560 can release the second feeding roller 520 so that the second feeding roller 520 and the first feeding roller 510 are in clearance fit, making it easier for the operator to insert the roll 20 into the gap between the second feeding roller 520 and the first feeding roller 510, thus completing the loading and installation of the roll 20.

[0063] The first clamping assembly 560 can also clamp the second feeding roller 520 so that the second feeding roller 520 and the first feeding roller 510 abut against each other. Thus, when the first feeding roller 510 rotates, it can drive the roll material 20 to be conveyed. At the same time, the second feeding roller 520 rotates passively to improve the reliability and smoothness of the conveying of the roll material 20.

[0064] Specifically, the first clamping component 560 is an eccentric clamp, and two of them are provided. The two first clamping components 560 are respectively disposed at both ends of the axial direction of the second feeding roller 520. By operating the eccentric clamp, it is easy to switch between clearance fit and abutment fit between the second feeding roller 520 and the first feeding roller 510. Of course, in other embodiments, the first clamping component 560 can also be a screw abutment clamp, and the type and number of the first clamping components 560 can be adjusted according to specific needs.

[0065] In one embodiment, please refer to Figures 4 to 7The pre-tensioning mechanism 600 also includes a pre-tensioning frame 630 and a pre-tensioning motor 640. The first pre-tensioning roller 610 and the second pre-tensioning roller 620 are both rotatably mounted on the pre-tensioning frame 630. The pre-tensioning motor 640 is connected to the first pre-tensioning roller 610 and is used to drive the first pre-tensioning roller 610 to rotate. The pre-tensioning mechanism 600 also includes a second clamping assembly 650. The second pre-tensioning roller 620 is mounted on the pre-tensioning frame 630 through the second clamping assembly 650. The second clamping assembly 650 can release or clamp the second pre-tensioning roller 620 so that the second pre-tensioning roller 620 is in clearance fit or abutment fit with the first pre-tensioning roller 610.

[0066] With this configuration, the second clamping assembly 650 can release the second pre-tension roller 620 so that the second pre-tension roller 620 and the first pre-tension roller 610 are in clearance fit, making it easier for the operator to insert the roll 20 into the gap between the second pre-tension roller 620 and the first pre-tension roller 610 to complete the loading and installation of the roll 20.

[0067] The second clamping assembly 650 can also clamp the second pre-tension roller 620 so that the second pre-tension roller 620 and the first pre-tension roller 610 abut against each other, thereby driving the roll material 20 to be conveyed when the first pre-tension roller 610 rotates.

[0068] Specifically, the second clamping component 650 is an eccentric clamp, and two of them are provided. The two second clamping components 650 are respectively disposed at both ends of the axial direction of the second pre-tensioning roller 620. By operating the eccentric clamp, it is easy to switch between clearance fit and abutment fit between the second pre-tensioning roller 620 and the first pre-tensioning roller 610. Of course, in other embodiments, the second clamping component 650 can also be a screw abutment clamp, and the type and number of the second clamping components 650 can be adjusted according to specific needs.

[0069] In one embodiment, please refer to Figures 4 to 7 The pre-tensioning mechanism 600 also includes a transmission assembly 660. The pre-tensioning motor 640 is connected to the first pre-tensioning roller 610 via the transmission assembly 660. The pre-tensioning motor 640 is installed on the pre-tensioning frame 630 and located inside the pre-tensioning frame 630. The transmission assembly 660 includes a first pre-tensioning pulley 661, a second pre-tensioning pulley 663, and a pre-tensioning transmission belt 662. The first pre-tensioning pulley 661 is rotatably disposed on the outside of the pre-tensioning frame 630 and coaxially connected to the pre-tensioning motor 640. The second pre-tensioning pulley 663 is rotatably disposed on the outside of the pre-tensioning frame 630 and coaxially connected to the first pre-tensioning roller 610. The pre-tensioning transmission belt 662 is wound between the first pre-tensioning pulley 661 and the second pre-tensioning pulley 663, thereby realizing the pre-tensioning and conveying of the metal mesh by the second pre-tensioning roller 620 and the first pre-tensioning roller 610.

[0070] Understandably, by changing the pulley size between the first pretension pulley 661 and the second pretension pulley 663, the rotational speed of the pretension motor 640 conveying the first pretension roller 610 can be adjusted. Since the pretension motor 640 is mounted on the pretension frame 630 and located inside the pretension frame 630, it facilitates the miniaturization design of the pretension mechanism 600.

[0071] In one embodiment, please refer to Figures 4 to 7 The pre-tensioning mechanism 600 also includes a first pre-tensioning tooth 670 and a second pre-tensioning tooth 680; the first pre-tensioning tooth 670 is rotatably disposed on the outside of the pre-tensioning frame 630 and coaxially connected with the first pre-tensioning roller 610, and the second pre-tensioning tooth 680 is rotatably disposed on the outside of the pre-tensioning frame 630 and coaxially connected with the second pre-tensioning roller 620, and the first pre-tensioning tooth 670 and the second pre-tensioning tooth 680 mesh.

[0072] With this configuration, both the second pre-tension roller 620 and the first pre-tension roller 610 are active rollers, and the second pre-tension roller 620 and the first pre-tension roller 610 rotate simultaneously, which facilitates the stable and reliable conveying of the metal mesh and achieves its pre-tensioning and flattening functions.

[0073] In one embodiment, please refer to Figures 4 to 7 The pre-tensioning device also includes a tension detection mechanism 700, which is located between the feeding mechanism 500 and the pre-tensioning mechanism 600, and is triangularly distributed with the feeding mechanism 500 and the pre-tensioning mechanism 600. The tension detection mechanism 700 includes a tension roller 710 and a tension detector. The tension roller 710 is used to guide the metal mesh, and the tension detector is located on the tension roller 710 and is used to sense the pressure value of the metal mesh, thereby determining the tension on the metal mesh.

[0074] Specifically, the pre-tensioning device also includes a controller. When the tension detector detects that the tension is too high, the controller can reduce the power of the pre-tensioning motor 640 and reduce its rotational speed, thereby reducing the tension on the metal mesh.

[0075] Understandably, since the pre-tensioning speed of the pre-tensioning mechanism 600 on the metal mesh is greater than the conveying speed of the feeding mechanism 500 on the roll 20, the pre-tensioning mechanism 600 pulls the metal mesh faster, while the feeding mechanism 500 conveys the roll 20 slower, resulting in a speed difference. The pre-tensioning mechanism 600 can stretch the metal mesh. When the tension detector detects that the tension is too high, the speed difference needs to be reduced to prevent the metal mesh from being broken. The tension of the roll 20 in the current collector processing device 200 is kept within a preset range to support the current collector processing device 200 in cutting and punching the roll 20 to form the mesh structure 21.

[0076] In one embodiment, the pre-stretching device further includes a first guide roller 540, which is disposed in front of the feeding mechanism 500 and is used to guide the roll material 20 to be conveyed between the first feeding roller 510 and the second feeding roller 520, thereby facilitating the conveying of the roll material 20 according to a preset trajectory.

[0077] In one embodiment, please refer to Figures 4 to 7 The current collector processing device 200 includes a frame 210, a first cutter 220, a second cutter 230, and a drive mechanism 250. The feeding mechanism 500 is used to convey the roll material 20 into the cutting space formed by the first cutter 220 and the second cutter 230. The first cutting edge 221 of the first cutter 220 is a flat blade, and the second cutting edge 231 of the second cutter 230 is toothed. The drive mechanism 250 is mounted on the frame 210 and is used to drive one of the first cutter 220 and the second cutter 230 to move relative to the other. The first cutter 220 can move closer to or away from the second cutter 230 along a straight line in a first direction, and the first cutter 220 can also reciprocate along a straight line in a second direction relative to the second cutter 230 to process the roll material 20 in the cutting space into a metal mesh. The first direction and the second direction are set at an angle. By setting the staggered movement of the first cutter 220 and the second cutter 230, the material utilization rate of the roll material 20 can be improved, while reducing the mesh size and wire diameter, thereby improving the forming quality of the metal mesh.

[0078] In this embodiment, the second cutting tool 230 is mounted on the drive mechanism 250 and serves as a moving tool. The drive mechanism 250 can drive the second cutting tool 230 to move relative to the first cutting tool 220, thereby achieving tool setting.

[0079] In one embodiment, please refer to Figures 1 to 3 The battery current collector production equipment also includes a support frame 300, an unwinding device 400, a feeding device, and a winding device 100. The unwinding device 400 is disposed on the support frame 300 and is used to unwind the roll material 20. The current collector processing device 200 is disposed on the support frame 300 and is used to process the roll material 20 into a metal mesh. The feeding device is disposed on the support frame 300 and is located between the unwinding device 400 and the current collector processing device 200, so as to be able to convey the roll material 20 to the current collector processing device 200. The winding device 100 is disposed on the support frame 300 and is used to wind the metal mesh. A roll of material 10 is disposed on the unwinding device 400.

[0080] In one embodiment, the battery current collector production equipment further includes a position detection device 800, which is disposed on the support frame 300 and located between the unwinding device 400 and the feeding device. The position detection device 800 is used to sense the conveying position of the roll 20, so that when the roll 20 deviates, an alarm or correction can be triggered.

[0081] In one embodiment, the battery current collector production equipment further includes a damping adjustment device 900, which is disposed on the support frame 300 and located between the unwinding device 400 and the feeding device. The damping adjustment device 900 is a damping roller 910, and the roll material 20 is wound around the damping roller 910, thereby making the conveying of the roll material 20 stable and reliable.

[0082] In one embodiment, the unwinding device 400, the feeding mechanism 500, the pre-tensioning mechanism 600, and the winding device 100 are arranged in a ring around the current collector processing device 200, thereby facilitating the miniaturized spatial arrangement of the battery current collector production equipment.

[0083] In one embodiment, the feeding mechanism 500 is used to transport the roll material 20 within the cutting space along a third direction, the third direction being set at an angle to the first direction and the second direction, thereby realizing the transport and processing of the roll material 20.

[0084] Figures 8 to 10 The middle arrow Z points to the third direction. As the feeding mechanism 500 conveys the roll 20 along the third direction, the driving mechanism 250 drives the second cutter 230 to move relative to the first cutter 220 once, forming a row of mesh structures 21 on the roll 20. At this time, the mesh structure 21 is triangular, as shown in the image. Figure 8 As shown, next, as the feeding mechanism 500 continues to move the roll 20 along a third direction, the drive mechanism 250 drives the second cutter 230 to move relative to the first cutter 220 again, and forms another row of mesh structures 21 on the roll 20. At this time, the first row of mesh structures 21 is stretched into a prismatic shape, and the second row of mesh structures 21 is triangular, as shown. Figure 9 As shown, by repeating the above steps, the roll material is processed into various shapes, such as... Figure 10 As shown.

[0085] Figure 11 and Figure 12 These are schematic diagrams showing the tool setting of the first cutting tool 220 and the second cutting tool 230, respectively. Figure 11 The diagram shows the movement of the second cutting edge 231 of the second cutter 230 away from the first cutting edge 221 of the first cutter 220. At this time, there is a gap between the second cutting edge 231 of the second cutter 230 and the first cutting edge 221 of the first cutter 220, allowing the metal mesh to pass through. Figure 12 The diagram shows the second cutting edge 231 of the second cutter 230 moving close to the first cutting edge 221 of the first cutter 220. At this time, the second cutting edge 231 of the second cutter 230 and the first cutting edge 221 of the first cutter 220 partially overlap, that is, the toothed second cutting edge 231 and the flat first cutting edge 221 partially overlap, but the coil material has not yet been cut, thus punching holes and deforming the coil material to form a mesh structure 21.

[0086] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pre-tensioning device for a current collector processing apparatus, characterized in that, The pre-tensioning device includes a feeding mechanism and a pre-tensioning mechanism; The feeding mechanism includes a first feeding roller and a second feeding roller arranged opposite to each other, the roll material is passed between the first feeding roller and the second feeding roller, and the roll material can be conveyed when at least one of the first feeding roller and the second feeding roller rotates; The pre-stretching mechanism includes a first pre-stretching roller and a second pre-stretching roller arranged opposite to each other. The metal mesh formed by the processing of the roll material is passed between the first pre-stretching roller and the second pre-stretching roller, and can pre-stretch and flatten the metal mesh when at least one of the first pre-stretching roller and the second pre-stretching roller rotates. The pre-stretching speed of the pre-stretching mechanism on the metal mesh is greater than the conveying speed of the feeding mechanism on the roll material.

2. The pre-tensioning device for a current collector processing apparatus according to claim 1, characterized in that, The feeding mechanism further includes a feeding frame and a feeding motor. The first feeding roller and the second feeding roller are both rotatably mounted on the feeding frame. The feeding motor is connected to the first feeding roller and is used to drive the first feeding roller to rotate. The feeding mechanism further includes a first clamping assembly, and the second feeding roller is mounted on the feeding frame through the first clamping assembly. The first clamping assembly can release or clamp the second feeding roller so that the second feeding roller and the first feeding roller are in clearance fit or abutment fit.

3. The pre-tensioning device for a current collector processing apparatus according to claim 2, characterized in that, The first clamping assembly is an eccentric clamp, and two of them are provided; The two first clamping components are respectively disposed at both ends of the second feeding roller.

4. The pre-tensioning device for a current collector processing apparatus according to any one of claims 1 to 3, characterized in that, The pre-tensioning mechanism further includes a pre-tensioning frame and a pre-tensioning motor. The first pre-tensioning roller and the second pre-tensioning roller are both rotatably mounted on the pre-tensioning frame. The pre-tensioning motor is connected to the first pre-tensioning roller and is used to drive the first pre-tensioning roller to rotate. The pre-tensioning mechanism further includes a second clamping assembly, through which the second pre-tensioning roller is mounted on the pre-tensioning frame. The second clamping assembly can release or clamp the second pre-tensioning roller so that the second pre-tensioning roller is in clearance fit or abutment fit with the first pre-tensioning roller.

5. The pre-tensioning device for a current collector processing apparatus according to claim 4, characterized in that, The second clamping assembly is an eccentric clamp, and two of them are provided; The two second clamping components are respectively disposed at both ends of the second pre-tensioning roller.

6. The pre-tensioning device for a current collector processing apparatus according to claim 4, characterized in that, The pre-tensioning mechanism further includes a transmission assembly. The pre-tensioning motor is connected to the first pre-tensioning roller via the transmission assembly. The pre-tensioning motor is installed on the pre-tensioning frame and located inside the pre-tensioning frame. The transmission assembly includes a first pre-tension pulley, a second pre-tension pulley, and a pre-tension transmission belt. The first pre-tension pulley is rotatably disposed on the outside of the pre-tension frame and coaxially connected to the pre-tension motor. The second pre-tension pulley is rotatably disposed on the outside of the pre-tension frame and coaxially connected to the first pre-tension roller. The pre-tension transmission belt is wound between the first pre-tension pulley and the second pre-tension pulley.

7. The pre-tensioning device for a current collector processing apparatus according to claim 4, characterized in that, The pre-tensioning mechanism further includes a first pre-tensioning tooth and a second pre-tensioning tooth; The first pre-tension tooth is rotatably disposed on the outside of the pre-tension frame and coaxially connected with the first pre-tension roller. The second pre-tension tooth is rotatably disposed on the outside of the pre-tension frame and coaxially connected with the second pre-tension roller. The first pre-tension tooth and the second pre-tension tooth mesh with each other.

8. The pre-tensioning device for a current collector processing apparatus according to claim 1, characterized in that, The pre-tensioning device further includes a tension detection mechanism, which is disposed between the feeding mechanism and the pre-tensioning mechanism, and is triangularly distributed with the feeding mechanism and the pre-tensioning mechanism; the tension detection mechanism includes a tension roller and a tension detector, the tension roller is used to guide the metal mesh, and the tension detector is disposed on the tension roller and used to sense the pressure value of the metal mesh; and / or, The pre-stretching device further includes a first guide roller, which is disposed in front of the feeding mechanism and is used to guide the roll material to be conveyed between the first feeding roller and the second feeding roller.

9. A battery current collector production device, characterized in that, The battery current collector production equipment includes a current collector processing device and a pre-stretching device, wherein the pre-stretching device is the pre-stretching device for the current collector processing device as described in any one of claims 1 to 8; The feeding mechanism is located before the current collector processing device and is used to feed the current collector processing device with roll material. The current collector processing device is used to process the roll material into a metal mesh. The pre-stretching mechanism is located after the current collector processing device and is used to pre-stretch the metal mesh.

10. The battery current collector production equipment according to claim 9, characterized in that, The current collector processing device includes a frame, a first cutting tool, a second cutting tool, and a drive mechanism; The feeding mechanism is used to convey the roll material into the cutting space formed by the first cutter and the second cutter. The first cutting edge of the first cutter is a flat blade, and the second cutting edge of the second cutter is toothed. The drive mechanism is mounted on the frame and is used to drive one of the first cutter and the second cutter to move relative to the other. The first cutter can move closer to or away from the second cutter along a straight line in a first direction, and the first cutter can also reciprocate along a straight line in a second direction relative to the second cutter, so as to process the roll material in the cutting space into a metal mesh. The first direction and the second direction are set at an angle.

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