Roller assembly, conveying device and laser processing equipment

Abstract

The utility model discloses a roller wheel assembly, a conveying device and laser processing equipment, the roller wheel assembly comprises a rotating roller, the rotating roller comprises a supporting part and a taper part, the taper part is provided with a large-diameter end and a small-diameter end which are oppositely arranged, and the large-diameter end is connected to the end part of the supporting part; the small-diameter end can move in the axial direction of the rotating roller relative to the supporting part so as to change the size of the taper part in the axial direction of the rotating roller. According to the roller assembly, the size of the taper part of the rotating roller can be changed, so that the rotating roller can be adaptive to tabs with different lengths and sizes, and replacement is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of pole piece processing, in particular to a roller assembly, a conveying device and laser processing equipment. Background Art

[0002] In the process of manufacturing lithium battery cells, it is necessary to process the pole pieces to form the cell tabs. After processing, the pole pieces need to be collected and transported by rollers. In the related art, tapered rollers are used to transport pole pieces to reduce adverse conditions such as folding of the tabs during transportation. However, since the tabs used for different pole pieces have different sizes and lengths, the roller cannot adapt to tabs of different lengths and needs to be replaced. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a roller assembly that can change the size of the tapered portion of the rotating roller so that the rotating roller can be adapted to pole ears of different lengths and sizes without frequent replacement.

[0004] The utility model also provides a conveying device having the roller assembly.

[0005] The utility model also provides a laser processing device with the conveying device.

[0006] The roller assembly according to the first embodiment of the utility model comprises:

[0007] A rotating roller, comprising a supporting portion and a tapered portion, wherein the tapered portion has a large diameter end and a small diameter end arranged opposite to each other, and the large diameter end is connected to the end of the supporting portion;

[0008] The small diameter end can move relative to the support portion along the axial direction of the rotating roller to change the size of the tapered portion along the axial direction of the rotating roller.

[0009] The roller assembly according to the embodiment of the utility model has at least the following beneficial effects: the rotating roller includes a tapered portion, so that the rotating roller can prevent the pole ear from being affected by tension and folding when transporting the pole piece, and at the same time, the small diameter end of the tapered portion can move relative to the supporting portion to change the size of the tapered portion itself, so that it can adapt to pole ears of different lengths.

[0010] According to some embodiments of the utility model, an adjusting member is further included, which is connected to the small diameter end and movably connected to the support portion, and the adjusting member is configured to drive the small diameter end to move axially along the rotating roller relative to the support portion.

[0011] According to some embodiments of the utility model, the supporting portion defines a accommodating cavity, the adjusting member includes a connecting portion and an adjusting portion, the connecting portion is connected to the adjusting portion, the connecting portion is arranged in the accommodating cavity and is movably connected to the supporting portion, and the adjusting portion is connected to the small diameter end.

[0012] According to some embodiments of the utility model, the adjusting member and the rotating roller are hollow structures, and the tapered portion and the adjusting member are provided at both ends of the supporting portion;

[0013] The roller assembly also includes:

[0014] Bearings, respectively connected to the adjusting members at both ends of the supporting portion and accommodated in the hollow structure of the adjusting member, wherein the outer peripheral wall of the bearing abuts against the inner wall of the adjusting member;

[0015] a first positioning member, disposed at one end of the rotating roller, the first positioning member abutting against the bearing and limiting the axial movement of the bearing along the rotating roller; and

[0016] A supporting shaft, comprising a main body, the main body is passed through the adjusting member and the rotating roller from the other end of the rotating roller, and is detachably connected to the first positioning member;

[0017] Wherein, the adjusting member drives the rotating roller to rotate relative to the supporting shaft through the bearing.

[0018] According to some embodiments of the present invention, the adjusting member includes a limiting portion, the limiting portion is formed by extending a portion of the inner wall of the adjusting member toward the central axis of the adjusting member, and one end of the bearing abuts against the limiting portion.

[0019] According to some embodiments of the present invention, the bearing includes an inner ring and an outer ring, the outer ring is rotatable relative to the inner ring, the outer ring abuts against the inner wall of the adjusting member, and the adjusting member rotates relative to the supporting shaft through the outer ring.

[0020] According to some embodiments of the present invention, the first positioning member extends toward one side of the bearing to form an abutment portion, the abutment portion abuts against the bearing, and the first positioning member and the limiting portion jointly position the bearing.

[0021] According to some embodiments of the utility model, a second positioning member is further included, wherein the second positioning member is connected to the main body, and the second positioning member has a protrusion extending along the axial direction of the support shaft toward one side of the bearing, and when the main body is passed through the adjusting member and the rotating roller, the protrusion abuts against the bearing arranged away from the first positioning member.

[0022] According to the second aspect of the present invention, the conveying device comprises:

[0023] Workbench;

[0024] At least one roller assembly described in any of the above embodiments is connected to the workbench and is used to transport the pole piece along an axial direction perpendicular to the rotating roller.

[0025] The conveying device according to the embodiment of the utility model has at least the following beneficial effects: the conveying device can not only transport the pole piece on the workbench through the roller assembly, but also prevent the pole ear from folding, thereby improving the quality and yield of the pole piece product.

[0026] According to the laser processing equipment of the third aspect embodiment of the utility model, it includes: a laser cutting device and the conveying device described in the above embodiment, the laser cutting device is used to cut the pole piece to form a pole ear, and the conveying device is arranged downstream of the laser cutting device to transport the processed pole piece.

[0027] The laser processing equipment according to the embodiment of the utility model has at least the following beneficial effects: after the equipment processes the pole ear through laser, the pole piece is transported by the conveying device, and the conveying device prevents the pole ear from folding, thereby improving product quality and yield.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 It is a schematic diagram of a roller assembly according to an embodiment of the utility model;

[0031] Figure 2 It is a schematic diagram of a roller assembly according to an embodiment of the utility model;

[0032] Figure 3 For the utility model embodiment Figure 2 Sectional view at AA in the middle;

[0033] Figure 4 It is a schematic diagram of a pole piece of an embodiment of the utility model;

[0034] Figure 5 This is a schematic diagram of another embodiment of the roller assembly of the utility model;

[0035] Figure 6 An exploded view of a roller assembly according to an embodiment of the utility model;

[0036] Figure 7 It is a schematic diagram of the adjusting member of the embodiment of the utility model;

[0037] Figure 8 This is a schematic diagram of a first positioning member according to an embodiment of the utility model;

[0038] Fig. 9 It is a schematic diagram of another embodiment of the rotating roller of the utility model.

[0039] Reference numerals:

[0040] Rotating roller 100; supporting portion 110; accommodating cavity 111; tapered portion 120; large diameter end 121; small diameter end 122; sliding portion 123; adjusting member 200; connecting portion 210; adjusting portion 220; limiting portion 230; bearing 300; inner ring 310; outer ring 320; first positioning member 400; abutting portion 410; second positioning member 500; raised portion 510; supporting shaft 600; main body 610; pole piece 700; pole ear 710. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0045] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The roller assembly of the first embodiment of the utility model is described below with reference to the drawings in the specification.

[0047] The pole tab 710 is a raw material for lithium-ion polymer battery products, and is mainly used for connection, conduction and sealing. The pole tab 710 is a component formed by cutting and processing on the pole piece 700. During the transportation of the pole piece 700, it is necessary to prevent the pole tab 710 from folding. Figures 1 to 4 As shown, the roller assembly includes a rotating roller 100 .

[0048] See also Figure 2 and Figure 3 As shown, the rotating roller 100 includes a support portion 110 and a tapered portion 120, and the tapered portion 120 is connected to the end of the support portion 110. The tapered portion 120 includes a large diameter end 121 and a small diameter end 122, and the large diameter end 121 and the small diameter end 122 are arranged opposite to each other, and the large diameter end 121 is connected to the end of the supporting portion 110. Among them, the small diameter end 122 is a free end. Under the action of external force, the small diameter end 122 can move relative to the support portion 110 along the axial direction of the rotating roller 100, thereby changing the size of the tapered portion 120, so that the tapered portion 120 can adapt to the pole lugs 710 of different lengths. It should be noted that since the tapered portion 120 itself has a certain inclination angle, changing the size of the tapered portion 120 is to change its length dimension along the axial direction of the rotating roller 100 and the inclination angle dimension of the tapered structure formed by itself.

[0049] Specifically, see Figures 1 to 4As shown, the support portion 110 is a cylindrical structure, and the support portion 110 is used to fit the pole piece 700 so that the pole piece 700 can be transported on the support portion 110. The tapered portion 120 cooperates with the pole lug 710. Since the length dimensions of the pole lug 710 are different, the tapered portion 120 needs to change its own length and tilt angle through the small diameter end 122 to adapt to the length dimension of the pole lug 710. When the pole piece 700 is transported on the rotating roller 100, the pole piece 700 will be transmitted and smoothed on the support portion 110. Since the tapered portion 120 has a certain tilt angle, under normal circumstances, the tapered portion 120 will not contact the pole lug 710. When the pole piece 700 is smoothed, the pole piece 700 itself will generate tension, and the tension is transmitted to both sides of the pole piece 700, that is, it is transmitted to the direction where the pole lug 710 is provided. Under the influence of the tension, the pole lug 710 has the possibility of sagging in the direction of the tapered portion 120 or even folding. Therefore, under abnormal circumstances, that is, when the pole ear 710 droops and has a tendency to fold, after the pole ear 710 droops to a certain height, it will abut against the tapered portion 120. The tapered portion 120 will prevent the pole ear 710 from sagging and thus avoid the pole ear 710 from folding, thereby improving the product quality and yield of the pole piece 700 and the pole ear 710.

[0050] The rotating roller 100 is provided with a tapered portion 120 so that the rotating roller 100 can prevent the pole lug 710 from being affected by tension and folding when transporting the pole piece 700. At the same time, the small diameter end 122 of the tapered portion 120 can move relative to the support portion 110 to change the axial size of the tapered portion 120 along the rotating roller 100, so that the rotating roller 100 can adapt to the pole lugs 710 of different lengths, thereby solving the problem of the rotating roller 100 facing the pole lugs 710 of different lengths and needing to replace the rotating roller 100 to adapt to the pole lugs 710.

[0051] In some embodiments, the tapered portion 120 is made of a deformable material. Since the deformable material has good elasticity, the tapered portion 120 can achieve the function of changing size through the elastic material. When the tapered portion 120 needs to shorten its axial dimension, the small diameter end 122 of the tapered portion 120 is squeezed to make the small diameter end 122 of the tapered portion 120 axially close to the large diameter end 121, thereby obtaining a shorter conical surface structure; correspondingly, when the tapered portion 120 needs to extend its axial dimension, the small diameter end 122 of the tapered portion 120 is stretched to make the small diameter end 122 of the tapered portion 120 axially away from the large diameter end 121, thereby obtaining a longer conical surface structure. Among them, the deformable material is preferably a rubber material. In other embodiments, the deformable material can also be a silicone material, or a material such as spring steel, as long as the tapered portion 120 can be changed according to the length dimension of the pole ear 710.

[0052] In other embodiments, the tapered portion 120 may not change its size through material properties. Fig. 9 As shown, the tapered portion 120 is composed of a plurality of sliding portions 123, and the plurality of sliding portions 123 are arranged in sequence so that the tapered portion 120 has a tapered structure, and the plurality of sliding portions 123 can move along the axial direction of the rotating roller 100 relative to the support portion 110. Among them, the outermost sliding portion 123, that is, the sliding portion 123 farthest from the support portion 110, can be accommodated in the upper sliding portion 123 connected thereto by sliding, and so on, the other sliding portions 123 can also be accommodated in the upper sliding portion 123 by sliding, thereby changing the size of the tapered portion 120. This embodiment changes the size of the tapered portion 120 by sliding accommodation, so that the tapered portion 120 can be suitable for pole ears 710 of different lengths.

[0053] In some embodiments, the outer shape of the support portion 110 is not limited to a cylindrical structure. Figure 5 As shown, the outer wall surface of the support portion 110 can also be an arc-shaped surface. By using the arc-shaped surface, the rotating roller 100 can still support, transport and smooth the pole piece 700 when facing some special pole pieces 700 with curvature.

[0054] In some embodiments, see Figure 6 and Figure 7 As shown, the roller assembly further includes an adjusting member 200, which is connected to the small diameter end 122 of the tapered portion 120, and the adjusting member 200 is movably connected to the support portion 110. The adjusting member 200 can drive the small diameter end 122 to move along the axial direction of the rotating roller 100 relative to the support portion 110, thereby achieving the purpose of changing the size of the tapered portion 120.

[0055] Further, see Figure 6 and Figure 7 As shown, the support portion 110 defines a receiving cavity 111, and the adjusting member 200 includes a connecting portion 210 and an adjusting portion 220, wherein the connecting portion 210 is connected to the adjusting portion 220, wherein the connecting portion 210 is located in the receiving cavity 111 and is movably connected to the inner wall of the support portion 110. The adjusting portion 220 is used to connect the small diameter end 122, and the connecting portion 210 can be moved relative to the support portion 110 through the adjusting portion 220, so that the adjusting member 200 can move relative to the support portion 110. Specifically, the inner wall of the support portion 110 and the connecting portion 210 are both provided with a threaded structure, and the connecting portion 210 is rotatably connected in the receiving cavity 111 through the threaded structure, and the adjusting member 200 can be moved along the axial direction of the rotating roller 100 by controlling the adjusting portion 220, thereby driving the small diameter end 122 of the tapered portion 120 to move.

[0056] In some embodiments (not shown in the figure), the connection method between the support part 110 and the adjusting member 200 is not limited to threaded connection, such as: a slide rail is provided on the inner wall of the support part 110, and the connecting part 210 of the adjusting member 200 is provided with a slide groove adapted to the slide rail. Through the cooperation of the slide rail and the slide groove, the adjusting member 200 can slide relative to the support part 110, so as to achieve the purpose of driving the small diameter end 122 to move to change the size of the tapered part 120, or a plurality of slots are provided inside the support part 110 along the axial direction of the rotating roller 100, and the connecting part 210 has a block, and the effect of the adjusting member 200 moving relative to the support part 110 can also be achieved by making the block snap in different slots; or the adjusting member 200 may not have a connecting part 210, so that the adjusting part 220 is connected to the small diameter end 122, and a buckle is provided on the adjusting part 220, and the buckle on the adjusting part 220 can be pulled to drive the small diameter end 122 to move to achieve the purpose of changing the size of the tapered part 120.

[0057] In another embodiment (not shown in the figure), the roller assembly may not include the adjusting member 200. When the size of the tapered portion 120 needs to be adjusted, the tapered portion 120 can be stretched by hand to change the size of the tapered portion 120 by using tweezers or tools such as pliers, so as to adapt the tapered portion 120 to the length of the pole ear 710.

[0058] In some embodiments, see Figure 6 and Figure 7 As shown, the adjusting member 200 and the rotating roller 100 are hollow structures, the two ends of the support part 110 are provided with a tapered portion 120 and the adjusting member 200, and the roller assembly further includes a bearing 300, a first positioning member 400 and a support shaft 600. Among them, the adjusting members 200 arranged at both ends of the support part 110 are both provided with bearings 300, the bearings 300 are located in the hollow structure of the adjusting member 200, and the outer peripheral wall of the bearing 300 abuts against the inner wall of the adjusting member 200, thereby driving the adjusting member 200 to rotate.

[0059] In some embodiments (not shown in the figures), a bearing 300 may be provided only on the adjusting member 200 at one end of the supporting portion 110. Under the condition of ensuring the rotation performance of the unilateral bearing 300, a single bearing 300 may be used to drive the adjusting member 200 and the rotating roller 100 to rotate relative to the supporting shaft 600, thereby achieving the effect of transporting the pole piece 700.

[0060] The first positioning member 400 is disposed at one end of the rotating roller 100 , and is used to abut against the bearing 300 at one end of the rotating roller 100 , limit the axial movement of the bearing 300 along the rotating roller 100 , and prevent the bearing 300 and the adjusting member 200 from separating.

[0061] The support shaft 600 includes a main body 610. Since the first positioning member 400 is provided at one end of the rotating roller 100, the main body 610 is inserted into the adjusting member 200 and the rotating roller 100 from the other end of the rotating roller 100, that is, the end opposite to the end where the first positioning member 400 is provided. After the main body 610 is inserted into the adjusting member 200 and the rotating roller 100, one end of the main body 610 contacts the first positioning member 400 and is detachably connected to the first positioning member 400.

[0062] Specifically, after the main body 610 is inserted through the adjusting member 200 and the rotating roller 100, the rotating roller 100, the adjusting member 200 and the bearing 300 are all located on the main body 610 and supported by the main body 610. Since one end of the main body 610 is connected to the first positioning member 400 and the other end of the main body 610 has a shoulder, the rotating roller 100, the adjusting member 200 and the bearing 300 cannot be separated from the main body 610. The rotating roller 100, the adjusting member 200 and the bearing 300 can rotate relative to the support shaft 600. When the pole piece 700 is transported on the rotating roller 100, the pole piece 700 will rub against the rotating roller 100. Due to the existence of the bearing 300, the friction between the pole piece 700 and the rotating roller 100 will drive the rotating roller 100 and the adjusting member 200 to rotate, so that the rotating roller 100 can transport and smooth the pole piece 700.

[0063] In some embodiments, see Figure 7 As shown, the adjusting member 200 also includes a limiting portion 230. Since the adjusting member 200 is a hollow structure, the limiting portion 230 is formed by extending and protruding from the inner wall of the adjusting member 200 toward the central axis of the adjusting member 200. The limiting portion 230 is arranged on the inner wall of the adjusting member 200. When the bearing 300 is located in the hollow structure of the adjusting member 200, one end of the bearing 300 abuts against the limiting portion 230, and the outer peripheral wall abuts against the inner wall of the adjusting member 200.

[0064] Further, see Figure 6 As shown, the bearing 300 includes an inner ring 310 and an outer ring 320 , and the outer ring 320 can rotate relative to the inner ring 310 , wherein the outer ring 320 abuts against the inner wall of the adjusting member 200 , and the adjusting member 200 can be rotated relative to the support shaft 600 through the outer ring 320 .

[0065] In some embodiments, see Figure 8As shown, the first positioning member 400 extends toward one side of the bearing 300 to form an abutting portion 410. When the first positioning member 400 abuts against the bearing 300, the first positioning member 400 and the limiting portion 230 jointly position the bearing 300, so that the bearing 300 is fixed in the hollow structure of the adjusting member 200 and cannot move along the axial direction of the rotating roller 100. Specifically, when the first positioning member 400 abuts against the bearing 300, the abutting portion 410 abuts against the inner ring 310 of the bearing 300, so that the inner ring 310 cannot rotate, while the outer ring 320 can rotate relative to the inner ring 310, and the outer ring 320 abuts against the inner wall of the adjusting member 200, so that the rotating roller 100 and the adjusting member 200 can rotate relative to the support shaft 600 through the outer ring 320 of the bearing 300.

[0066] In other embodiments (not shown in the figures), the adjusting member 200 can also be rotated through the inner ring 310 of the bearing 300, such as: a receiving groove that can accommodate the bearing 300 is provided on the adjusting member 200, and a cylindrical structure extends from the center of the receiving groove. The cylindrical structure is passed through the inner ring 310 of the bearing 300, and the inner ring 310 of the bearing 300 abuts against the outer wall of the cylinder, and the abutting portion 410 of the first positioning member 400 abuts against the outer ring 320 of the bearing 300, so that the outer ring 320 cannot rotate relative to the inner ring 310, thereby realizing the rotation of the adjusting member 200 through the inner ring 310 of the bearing 300.

[0067] In some embodiments, the roller assembly further includes a second positioning member 500, which is connected to the main body 610. The second positioning member 500 has a protrusion 510 extending along the axial direction of the support shaft 600 on one side of the second positioning member 500 facing the bearing 300. When the main body 610 is inserted through the adjusting member 200 and the rotating roller 100, the protrusion 510 abuts against the bearing 300 disposed away from the first positioning member 400. Specifically, the rotating roller 100 is provided with bearings 300 at both ends, wherein the bearing 300 at one end is positioned by the adjusting member 200 and the first positioning member 400, and the bearing 300 at the other end is positioned by the second positioning member 500. When the support shaft 600 is passed through the adjusting member 200 and the rotating roller 100, the side of the second positioning member 500 having the protrusion 510 will abut against the inner ring 310 of the bearing 300, and the other side of the second positioning member 500 will abut against the shoulder of the support shaft 600. The support shaft 600, the second positioning member 500 and the adjusting member 200 jointly position the bearing 300 which is arranged away from the first positioning member 400.

[0068] In the roller assembly implemented in the first aspect of the utility model, the two ends of the support part 110 are provided with a tapered part 120 and an adjusting member 200, and the adjusting member 200 can drive the tapered part 120 to move along the axial direction of the rotating roller 100 relative to the support part 110 to change the size of the tapered part 120. The adjusting member 200 fixes the bearing 300 through its own hollow structure and the limit part 230, so that the rotating roller 100 can rotate through the bearing 300. The bearings 300 at both ends of the rotating roller 100 are fixed in the hollow structure of the adjusting member 200 through the first positioning member 400 and the second positioning member 500, respectively, so that the bearing 300 cannot move along the axial direction of the rotating roller 100, ensuring that the roller assembly can normally transport the pole piece 700. Finally, the second adjusting member 200 is fixed by the shoulder of the support shaft 600, and the support shaft 600 is detachably connected to the first positioning member 400 after passing through the adjusting member 200 and the rotating roller 100, so that the rotating roller 100 and the adjusting member 200 are fixed on the support shaft 600, so that the rotating roller 100 and the adjusting member 200 can only rotate relative to the support shaft 600. The various components of the roller assembly cooperate and restrict each other, ensuring the working performance of the roller assembly.

[0069] The following describes a conveying device according to a second embodiment of the utility model.

[0070] See also Figures 1 to 8 As shown, the conveying device includes a workbench and at least one roller assembly described in any of the above embodiments, and the roller assembly is used to convey the pole piece 700 along the axial direction perpendicular to the rotating roller 100. Specifically, the support shaft 600 is detachably connected to the workbench to support the rotating roller 100. The rotating roller 100 can rotate relative to the support shaft 600 through the bearing 300. When the pole piece 700 is transported on the rotating roller 100, the pole piece 700 will be transmitted and smoothed on the support part 110, and the tapered part 120 will cooperate with the pole ear 710. When the pole ear 710 has a tendency to fold, the tapered part 120 will abut against the pole ear 710 to prevent the pole ear 710 from folding. Frictional force will be generated between the rotating roller 100 and the pole piece 700. Driven by the frictional force, the rotating roller 100 will rotate relative to the support shaft 600 through the bearing 300 to transport and smooth the pole piece 700 and the pole ear 710.

[0071] In another embodiment, the conveying device includes at least two roller assemblies described in any of the above embodiments. At least two roller assemblies are arranged up and down in azimuth. After the pole piece 700 is processed, the pole piece 700 will be sandwiched between the at least two roller assemblies. The tapered portions 120 of at least two roller assemblies are arranged on both sides of the pole ear 710, which can prevent the pole ear 710 from sagging relative to the tapered portion 120 and prevent the pole ear 710 from warping relative to the tapered portion 120, thereby improving the quality and yield of the product.

[0072] The laser processing equipment of the third embodiment of the utility model is described below. The laser processing equipment includes a laser cutting device and the above-mentioned conveying device. Among them, the laser cutting device is used to cut the pole piece 700 to form the pole ear 710, and the conveying device is arranged downstream of the laser cutting device. It should be noted that the downstream here is not up and down in the orientation, but a sequential relationship. That is, after the laser cutting device processes the pole ear 710 on the pole piece 700, the pole piece 700 will be transmitted to the conveying device, and the conveying device will further transport the processed pole piece 700, and prevent the pole ear 710 from warping or sagging relative to the rotating roller 100, and folding.

[0073] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. Roller assembly, characterized in that: include: A rotating roller, comprising a supporting portion and a tapered portion, wherein the tapered portion has a large diameter end and a small diameter end arranged opposite to each other, and the large diameter end is connected to the end of the supporting portion; The small diameter end can move relative to the support portion along the axial direction of the rotating roller to change the size of the tapered portion along the axial direction of the rotating roller.

2. The roller assembly according to claim 1, characterized in that: It also includes an adjusting member connected to the small diameter end and movably connected to the supporting portion, and the adjusting member is configured to drive the small diameter end to move along the axial direction of the rotating roller relative to the supporting portion.

3. The roller assembly according to claim 2, characterized in that: The support portion defines a housing cavity, the adjusting member comprises a connecting portion and an adjusting portion, the connecting portion is connected to the adjusting portion, the connecting portion is arranged in the housing cavity and is movably connected to the support portion, and the adjusting portion is connected to the small-diameter end.

4. The roller assembly according to claim 2, characterized in that: The adjusting member and the rotating roller are hollow structures, and the tapered portion and the adjusting member are provided at both ends of the supporting portion; The roller assembly also includes: Bearings, respectively connected to the adjusting members at both ends of the supporting portion and accommodated in the hollow structure of the adjusting member, wherein the outer peripheral wall of the bearing abuts against the inner wall of the adjusting member; a first positioning member, disposed at one end of the rotating roller, the first positioning member abutting against the bearing and limiting the axial movement of the bearing along the rotating roller; and A supporting shaft, comprising a main body, the main body is passed through the adjusting member and the rotating roller from the other end of the rotating roller, and is detachably connected to the first positioning member; Wherein, the adjusting member drives the rotating roller to rotate relative to the supporting shaft through the bearing.

5. The roller assembly according to claim 4, characterized in that: The adjusting member comprises a limiting portion, wherein the limiting portion is formed by extending a portion of the inner wall of the adjusting member toward the central axis of the adjusting member, and one end of the bearing abuts against the limiting portion.

6. The roller assembly according to claim 4, characterized in that: The bearing comprises an inner ring and an outer ring, the outer ring is rotatable relative to the inner ring, the outer ring abuts against an inner wall of the adjusting member, and the adjusting member rotates relative to the supporting shaft via the outer ring.

7. The roller assembly according to claim 5, characterized in that: The first positioning member extends toward one side of the bearing to form an abutting portion, the abutting portion abuts against the bearing, and the first positioning member and the limiting portion jointly position the bearing.

8. The roller assembly according to claim 4, characterized in that: It also includes a second positioning member, which is connected to the main body. The second positioning member has a protrusion extending along the axial direction of the support shaft on one side toward the bearing. When the main body is inserted through the adjusting member and the rotating roller, the protrusion abuts against the bearing arranged away from the first positioning member.

9. A conveying device, characterized in that include: Workbench; At least one roller assembly according to any one of claims 1 to 8 is connected to the workbench and is used to transport the pole piece in an axial direction perpendicular to the rotating roller.

10. Laser processing equipment, characterized in that include: A laser cutting device and a conveying device as described in claim 9, wherein the laser cutting device is used to cut the pole piece to form a pole ear, and the conveying device is arranged downstream of the laser cutting device to transport the processed pole piece.

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