Roller passing structure and lamination equipment

Abstract

The utility model provides a roller passing structure and lamination equipment, and relates to the technical field of lithium battery production and manufacturing. The roller passing structure comprises a roller body and end covers, the end covers are arranged at at least one end, in the axial direction of the roller body, of the roller body, short shafts are arranged on the sides, facing the roller body, of the end covers and penetrate through the roller body, and the roller body can rotate relative to the short shafts; wherein in the axial direction of the roller body, the length of the short shaft is smaller than that of the roller body, and the central axis of the short shaft and the central axis of the roller body are arranged in parallel. The end cover is of a structure with a short shaft, after the end cover is installed at the end, in the axial direction of the roller body, of the roller body, the roller body can rotate relative to the short shaft, and winding and unwinding of belt-shaped workpieces such as diaphragms are facilitated. The length of the short shaft is smaller than that of the roller body, the machining difficulty and the production cost are reduced, the short shaft is small in length and not prone to deformation, the rotation flexibility of the roller body is improved, the situation that powder falls off due to large friction generated by clamping stagnation of the diaphragm can be reduced, and the finished product quality is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of lithium battery production and manufacturing, and specifically relates to a roller structure and lamination equipment. Background Art

[0002] In lithium battery production equipment, the stacking machine is one of the key equipment in the battery cell manufacturing process. The roller structure is an important component of the stacking machine. The composite effect of the composite roller directly affects the composite quality of the unit cell.

[0003] The diaphragm roller of the existing roller structure is assembled on the core shaft, and the two ends of the core shaft are fixed on the support seat. When the diaphragm is wound and unwound, the diaphragm generates friction force on the diaphragm roller, driving the diaphragm roller to rotate.

[0004] Among them, the outer diameter of the core shaft 300 is about 10mm to 20mm. As the size of lithium battery cells becomes larger and larger, the length of the core shaft has reached more than 600mm. Under such shape and size conditions, the processing difficulty and cost of the core shaft, as well as the installation difficulty and cost are relatively high; at the same time, due to the size of the core shaft itself, the core shaft strength is relatively low, and it is easy to deform during actual use, affecting the coaxiality of the core shaft and the diaphragm roller, causing rotation jamming, suffocation and other conditions, affecting the flexible rotation of the diaphragm roller, requiring frequent inspection, debugging and replacement, affecting production efficiency and production stability, and if rotation jamming occurs, friction will increase, resulting in defects such as scratches on the diaphragm surface, causing the diaphragm to fall off, thereby affecting the quality of the battery cell. Utility Model Content

[0005] The roller structure and lamination equipment provided by the utility model improve the coaxiality of the core shaft and the roller body, thereby improving production efficiency and finished product quality.

[0006] According to the first aspect of the utility model, a roller structure is provided, comprising: a roller body and an end cover; the end cover is arranged at at least one end of the roller body along the axial direction of the roller body, and a short shaft is arranged on the side of the end cover facing the roller body, the short shaft passes through the roller body, and the roller body can rotate relative to the short shaft; wherein, along the axial direction of the roller body, the length of the short shaft is smaller than the length of the roller body, and the central axis of the short shaft is arranged parallel to the central axis of the roller body.

[0007] A short shaft is arranged on the side of the end cap facing the roller body, and the core shaft structure is eliminated, so that the end cap is a structure with a short shaft. After the end cap is installed at the end of the roller body along the axial direction of the roller body, the roller body can be rotated relative to the short shaft to facilitate the winding and unwinding of the diaphragm. The central axis of the short shaft is arranged in parallel with the central axis of the roller body, which improves the flexibility of the roller body's own rotation. By setting the length of the short shaft to be smaller than the length of the roller body, the processing difficulty and production cost are reduced. Since the length of the short shaft is relatively small, it is not easy to deform, which further improves the flexibility of the roller body's own rotation, reduces the cost of subsequent debugging and maintenance, and can reduce the diaphragm from losing powder due to large friction caused by stagnation, thereby improving the quality of the finished product.

[0008] In some embodiments, the roller structure further includes a support frame connected to the end cover for supporting the roller body.

[0009] The support frame is connected to the end cover to achieve installation and fixation of the end cover. The support frame provides support force for the end cover. Since the short shaft passes through the roller body, the support frame indirectly supports the roller body through the end cover and the short shaft, so that the roller body can be suspended to facilitate the rotation of the roller body.

[0010] In some embodiments, along the axial direction of the roller body, one of the sides where the support frame and the end cover are close to each other is provided with a first mounting member, and the other side corresponding to the first mounting member is provided with a second mounting member, and the first mounting member and the second mounting member cooperate with each other.

[0011] The first mounting member cooperates with the second mounting member to fix the end cover and the support frame, thereby preventing the end cover from being separated from the support frame under the action of external force, thereby improving the installation stability of the roller body.

[0012] In some embodiments, the first mounting member includes a mounting protrusion, and the second mounting member includes a mounting groove or a mounting hole.

[0013] By arranging a mounting protrusion on the support frame, arranging a mounting groove or mounting hole matching the mounting protrusion on the end cover, and using the mounting protrusion to be snap-fitted and fixed with the mounting groove or mounting hole, the support frame and the end cover are connected, the installation method is simple and practical.

[0014] In some embodiments, the first mounting member and the second mounting member are conical structures, the small end of the first mounting member is arranged toward the second mounting member, and the large end of the second mounting member is arranged toward the first mounting member.

[0015] Specifically, the mounting protrusion is a frustum structure, the mounting hole or the mounting groove is a conical structure, and the large end of the mounting hole or the mounting groove is arranged toward the mounting protrusion, so that the mounting protrusion can enter the mounting hole or the mounting groove from the large end, and the inclined wall of the mounting protrusion contacts the inclined wall of the mounting hole or the mounting groove, which plays a guiding effect and provides convenience for installation. At the same time, due to the influence of processing errors or long-term use, even if deformation occurs, the mounting protrusion of the conical structure and the mounting hole or the mounting groove can also play a role of active adjustment to a certain extent, which can provide a certain amount of adjustment and improve the flexibility of installation. In addition, the first mounting member and the second mounting member of the conical structure can also ensure good coaxiality.

[0016] In some embodiments, the short shaft, the end cover and the roller body are coaxially arranged; and / or the end cover and the first mounting member are coaxially arranged.

[0017] The mounting groove and the mounting hole of the second mounting member are arranged at the center of the side of the end cover away from the short shaft. When the first mounting member is inserted into the mounting groove or the mounting hole, with the cooperation of the first mounting member and the second mounting member, the axes of the first mounting member and the end cover are collinear, further improving the coaxiality of the installation of the short shaft and the roller body, thereby improving the smoothness of the roller body during rotation.

[0018] In some embodiments, the support frame includes a base and a column, the column is arranged on the base and vertically arranged relative to the base, and the first mounting member or the second mounting member is arranged on a side of the column facing the end cover.

[0019] The first mounting member or the second mounting member is arranged on the column, so that there is a certain height distance between the roller body and the base, and the roller body is in a suspended state, thereby avoiding rotational friction between the roller body and the base. By using the column, the connection position between the end cover and the support frame is the side of the end cover, which will not affect the winding and unwinding of the roller body.

[0020] In some embodiments, the cross-section of the mounting protrusion is a T-shaped structure, and one end of the mounting groove is provided with an opening, and the other end is provided with a closed end.

[0021] By arranging the mounting protrusion and the mounting groove which is open at one end and closed at the other end, the end cover can be mounted and fixed on the supporting frame, and the mounting method is simple and practical.

[0022] In some embodiments, the mounting groove includes a guide groove and a limiting groove, one end of the guide groove is open for inserting the mounting protrusion, the other end of the guide groove is connected to the limiting groove, and the limiting groove and the guide groove are set at an angle.

[0023] By setting the installation protrusion, the guide groove and the limit groove, the fixation between the end cover and the support frame is achieved. During installation, the installation protrusion is inserted from the open end of the guide groove and moves along the guide groove until it enters the limit groove. When the roller body is heavy and is subjected to external force, the installation protrusion is not easy to fall out of the limit groove, thereby improving the connection firmness between the end cover and the support frame.

[0024] In some embodiments, the support frame includes a base; the end cover is provided with a support portion, and the support portion is arranged on the base and vertically arranged relative to the base.

[0025] One end of the support part is set on the base, and the other end is connected to the end cover. The support part plays the role of supporting the end cover, which can make a certain height distance between the roller body and the base, and the roller body is in a suspended state to avoid rotational friction between the roller body and the base. The connection position between the end cover and the support frame is the side of the end cover, which will not affect the winding and unwinding of the roller body.

[0026] In some embodiments, the short shaft and the end cover are an integrally formed structure; and / or the first mounting member or the second mounting member arranged on the end cover is an integrally formed structure with the end cover; and / or the first mounting member or the second mounting member arranged on the support frame is an integrally formed structure with the support frame.

[0027] In some embodiments, the roller structure further includes a bearing, and the bearing is sleeved outside the short shaft and disposed between the short shaft and the roller body.

[0028] By setting a bearing between the hollow cavity of the roller body and the short shaft, the use of the bearing can reduce the friction between the roller body and the short shaft during relative rotation, further improve the smoothness of the roller body's rotation, reduce the risk of the roller body getting stuck, and thus improve the production efficiency of the battery cell and the quality of the finished product. At the same time, since the outer ring of the bearing and the inner wall of the hollow cavity of the roller body are fixed, the short shaft and the bearing are both set in the hollow cavity of the roller body, and the hollow cavity serves to accommodate the short shaft and the bearing, thereby improving the space utilization rate. The short shaft and the bearing are hidden inside the roller body and are not affected by the outside, thereby reducing the risk of the roller body's rotation being affected by the outside world and improving the flexibility of the roller body's rotation. In addition, along the axial direction of the roller body, the side of the bearing facing the end cover can also limit the end cover to a certain extent, so as to improve the axial positioning effect of the end cover.

[0029] According to the second aspect of the utility model, an embodiment of the utility model further provides a lamination device, including the above-mentioned roller structure.

[0030] In the embodiments of the present disclosure, combined with the above-mentioned roller structure, the production efficiency and the quality of the finished product can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to better understand the utility model, reference may be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the utility model. In addition, related elements or components may have different settings as known in the art. In addition, in the drawings, the same reference numerals represent the same or similar components in each of the drawings. By describing its example embodiments in detail with reference to the drawings, the above and other features and advantages of the utility model will become more apparent.

[0032] in:

[0033] Figure 1 The figure shows the overall structure schematic diagram of the roller structure provided by one embodiment of the utility model;

[0034] Figure 2 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 1 ;

[0035] Figure 3 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 2 ;

[0036] Figure 4 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 3 ;

[0037] Figure 5 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 4 ;

[0038] Figure 6 The figure shows the structure of the end cover in the roller structure provided by one embodiment of the utility model. Figure 1 ;

[0039] Figure 7 The figure shows the structure of the end cover in the roller structure provided by one embodiment of the utility model. Figure 2 ;

[0040] Figure 8 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 5 ;

[0041] Fig. 9 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 6 ;

[0042] Fig.10 The figure shows a partial cross-sectional view of a roller structure provided by an embodiment of the utility model. Figure 7 .

[0043] The reference numerals are described as follows:

[0044] 1. Roller body; 2. End cover; 3. Short shaft; 4. Support frame; 5. Bearing;

[0045] 20, second mounting member; 201, mounting groove; 2011, guide groove; 2012, limit groove; 202, mounting hole; 21, support portion;

[0046] 40. first mounting member; 401. mounting protrusion;

[0047] 41. Base; 42. Pillar. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the example embodiments of the utility model to clearly and completely describe the technical solutions in the example embodiments of the utility model. The example embodiments described herein are only for illustrative purposes and are not intended to limit the scope of protection of the utility model. Therefore, it should be understood that various modifications and changes can be made to the example embodiments without departing from the scope of protection of the utility model.

[0049] In the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; the term "plurality" refers to two or more; the term "and / or" includes any and all combinations of one or more associated listed items. In particular, reference to "the / the" object or "an" object is also intended to indicate one of a possible plurality of such objects.

[0050] Unless otherwise specified or explained, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0051] Further, in the description of the present invention, it should be understood that the directional words such as "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the exemplary embodiments of the present invention. It should also be understood that, in the context, when it is mentioned that an element or feature is connected to another element (one or more) "upper", "lower", or "inner", "outer", it can not only be directly connected to the other (one or more) elements "upper", "lower", or "inner", "outer", but can also be indirectly connected to the other (one or more) elements "upper", "lower", "inner", "outer" through an intermediate element.

[0052] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0053] This embodiment provides a roller structure suitable for winding or unwinding a strip-shaped workpiece, wherein the strip-shaped workpiece may be a tape, a diaphragm, etc. Figure 1 As shown, the roller structure includes a roller body 1 and an end cover 2. The roller body 1 is a cylindrical structure. The roller body 1 is a hollow structure, which plays a role in weight reduction, and the hollow cavity of the roller body 1 can be used as a accommodating cavity for other parts, saving space. Specifically, the roller body 1 can be a thin-walled steel pipe, which is relatively light in weight, has high strength, and is not easy to deform. The cross-sectional shape of the end cover 2 is compatible with the cross-sectional shape of the roller body 1. The cross-sectional shape of the end cover 2 can be a circular structure. The end cover 2 is arranged at least at one end of the roller body 1 along the axial direction of the roller body 1. The end cover 2 can block the central cavity of the roller body 1 to a certain extent. The end cover 2 actually plays the role of a plug to reduce the entry of external impurities into the interior of the roller body 1.

[0054] The core shaft of the existing roller structure passes through the end cover and the roller body. The roller body rotates relative to the core shaft. The outer peripheral surface of the roller body is used to wind the strip-shaped workpiece. As the roller body rotates relative to the core shaft, the strip-shaped workpiece such as the diaphragm can be wound and unwound. As the size of the battery cell gradually increases, the length of the core shaft also increases, which makes the processing more difficult. In addition, since the core shaft passes through the entire roller body, the core shaft is prone to deformation during use, resulting in uneven rotation, causing the diaphragm to lose powder due to friction, affecting production efficiency and finished product quality.

[0055] To solve this problem, Figure 1 As shown, the end cover 2 provided in this embodiment is provided with a short shaft 3 on the side facing the roller body 1 .

[0056] For example, the short shaft 3 can be connected to the end cover 2 by welding, riveting, clamping or bolting.

[0057] Exemplarily, the short shaft 3 can also be formed into an integrally formed structure with the end cap 2 by an integrally formed process. For example, the short shaft 3 can be formed simultaneously when the end cap 2 is prepared. For example, along the axial direction of the roller body 1, the side of the end cap 2 facing the roller body 1 is convexly provided to form a protrusion, and the protrusion is the short shaft 3; or, a groove is provided on the side of the end cap 2 facing the roller body 1, and the groove is concave in the direction away from the roller body 1, and a short shaft 3 is formed between two adjacent grooves. The above grooves and protrusions can be made by a stamping process or an injection molding process.

[0058] For example, the end cap 2 and the short shaft 3 can also be connected by plugging. For example, an axial hole is provided in the end cap 2, one end of the short shaft 3 is inserted into the roller body 1, and the other end is inserted into the axial hole. The diameter of the short shaft 3 is slightly larger than the axial hole, and the short shaft 3 and the axial hole can be connected by interference fit to achieve fixation between the short shaft 3 and the end cap 2. Of course, in some other embodiments, the short shaft 3 and the axial hole can also be clearance fit, and the short shaft 3 can rotate relative to the axial hole.

[0059] In the embodiments of the present disclosure, Figure 1 As shown, the short shaft 3 passes through the roller body 1 , and the roller body 1 can rotate relative to the short shaft 3 .

[0060] A short shaft 3 is provided on the side of the end cover 2 facing the roller body 1, and the core shaft structure is eliminated, so that the end cover 2 is a structure with a short shaft 3. After the end cover 2 is installed at the end of the roller body 1 along the axial direction of the roller body 1, the roller body 1 can rotate relative to the short shaft 3, which is convenient for winding and unwinding strip-shaped workpieces such as diaphragms.

[0061] The central axis of the short shaft 3 and the central axis of the roller body 1 are arranged in parallel, and the central axes of the short shaft 3 and the roller body 1 are arranged in a colinear manner, so as to ensure the flexibility of the roller body 1 in its own rotation.

[0062] In this case, along the axial direction of the roller body 1 , the length of the short axis 3 is smaller than the length of the roller body 1 .

[0063] By setting the length of the short shaft 3 to be smaller than the length of the roller body 1, the processing difficulty and production cost are reduced. Since the length of the short shaft 3 is relatively small, it is not easy to deform, which improves the flexibility of the rotation of the roller body 1 itself, reduces the cost of subsequent debugging and maintenance, and can reduce the powder loss caused by the large friction caused by the diaphragm getting stuck, thereby improving the quality of the finished product.

[0064] In one embodiment, the short shaft 3, the end cap 2 and the roller body 1 are coaxially arranged. During production and processing, the outer diameter of the roller body 1 is the same as the outer diameter of the end cap 2, and the short shaft 3 and the end cap 2 are coaxially arranged, or the short shaft 3 is arranged at the center of the end cap 2, or the radial distance between the axis of the short shaft 3 and the inner wall of the end cap 2 is equal to the inner diameter of the roller body 1. In this way, the axis of the short shaft 3 and the axis of the roller body 1 are collinear, that is, the axis of the roller body 1 itself and the rotation axis are collinear, ensuring the stability and smoothness of the roller body 1 during rotation.

[0065] It can be understood that the number of short shafts 3 and end caps 2 can be the same or different. For example, the number of short shafts 3 is one, the number of end caps 2 is two, and one short shaft 3 is arranged on one of the end caps 2, that is, one end of the roller body 1 can rotate relative to the short shaft 3, and the other end can be assisted by other structures. The number of short shafts 3 and end caps 2 can also be two, two short shafts 3 and two end caps 2 are arranged correspondingly, the diameters and lengths of the two short shafts 3 are the same, and the two short shafts 3 are symmetrically arranged at the two ends of the roller body 1, which is convenient for processing and assembly. At the same time, the two ends of the roller body 1 can rotate relative to the two short shafts 3 to ensure the rotation balance of the roller body 1.

[0066] Since the roller body 1 can rotate freely relative to the short shaft 3, the roller body 1 is movably arranged. When the end cover 2 is fixedly arranged, if the side surface of the end cover 2 facing the roller body 1 contacts the end surface of the roller body 1, the friction between the roller body 1 and the end cover 2 will increase, affecting the smoothness of the rotation of the roller body 1. For this reason, along the axial direction of the roller body 1, a gap is arranged between the side surfaces of the roller body 1 and the end cover 2 close to each other. The gap serves as an intermediate isolation between the roller body 1 and the end cover 2, avoiding direct contact between the roller body 1 and the end cover 2. The end cover 2 will not provide resistance to the rotation of the roller body 1, thereby improving the smoothness of the rotation of the roller body 1.

[0067] If a center hole is provided on the end face of the roller body 1 facing the end cover 2, and one end of the short shaft 3 is passed through the center hole, it is equivalent to that the short shaft 3 is in direct contact with the roller body 1. Although it does not affect the rotation of the roller body 1 relative to the short shaft 3, during the rotation of the roller body 1, the direct contact between the roller body 1 and the short shaft 3 will increase the friction resistance and affect the smoothness of the rotation of the roller body 1.

[0068] For this reason, Figure 1 As shown, the roller structure further includes a bearing 5, which is sleeved on the outside of the short shaft 3 and arranged between the short shaft 3 and the roller body 1. Specifically, the short shaft 3 is inserted into the inner ring of the bearing 5, the inner ring of the bearing 5 and the short shaft 3 are fixedly arranged, and the outer ring of the bearing 5 and the inner wall of the hollow cavity of the roller body 1 are fixedly arranged. When a strip-shaped workpiece such as a diaphragm is wound or unwound, the diaphragm generates friction force on the roller body 1, driving the roller body 1 to rotate, and at this time, the outer ring of the bearing 5 rotates at the same time, the inner ring of the bearing 5 does not move, and the short shaft 3 does not rotate either.

[0069] By arranging the bearing 5 between the hollow cavity of the roller body 1 and the short shaft 3, the use of the bearing 5 can reduce the friction force when the roller body 1 and the short shaft 3 rotate relative to each other, further improve the smoothness of the rotation of the roller body 1, reduce the risk of the roller body 1 being stuck, and thus improve the production efficiency of the battery cell and the quality of the finished product. At the same time, since the outer ring of the bearing 5 is fixed to the inner wall of the hollow cavity of the roller body 1, the short shaft 3 and the bearing 5 are both arranged in the hollow cavity of the roller body 1, and the hollow cavity serves to accommodate the short shaft 3 and the bearing 5, thereby improving the space utilization rate, and the short shaft 3 and the bearing 5 are hidden inside the roller body 1 and are not affected by the outside, thereby reducing the risk of the roller body 1 being affected by the outside world and improving the flexibility of the roller body 1. In addition, along the axial direction of the roller body 1, the side of the bearing 5 facing the end cover 2 can also limit the end cover 2 to a certain extent, so as to improve the axial positioning effect of the end cover 2.

[0070] Specifically, the bearing 5 may be a composite bearing, which is assembled from two roller bearings 5 ​​in the axial direction and the radial direction, which reduces the volume of the bearing 5, simplifies the installation structure, and thus reduces the manufacturing cost. The radial and axial load-bearing capacity of the composite bearing is relatively large, and the accessories are highly replaceable. Of course, the bearing 5 may also be a single bearing such as a tapered roller. This embodiment does not limit the type of the bearing 5, and it can be adjusted according to actual production conditions.

[0071] It should be noted that there are two bearings 5, which are symmetrically arranged at the two ends of the hollow cavity of the roller body 1, and the two bearings 5 ​​and the two short shafts 3 are arranged correspondingly. The two ends of the roller body 1 can rotate relative to the two short shafts 3 through the two bearings 5 ​​respectively to ensure the rotation balance of the roller body 1.

[0072] In one embodiment, Figure 1 As shown, the roller structure further includes a support frame 4 , which is connected to the end cover 2 and is used to support the roller body 1 .

[0073] Exemplarily, the support frame 4 and the end cover 2 may be directly connected or indirectly connected via other connection structures, and the connection methods between the support frame 4 and the end cover 2 include but are not limited to welding, bolt connection, riveting, clamping, sliding connection and the like.

[0074] In the disclosed embodiment, the end cover 2 is installed and fixed by connecting the support frame 4 to the end cover 2. The support frame 4 provides support force for the end cover 2. Since the short shaft 3 passes through the roller body 1, the support frame 4 indirectly supports the roller body 1 through the end cover 2 and the short shaft 3, so that the roller body 1 can be suspended to facilitate the rotation of the roller body 1.

[0075] In one embodiment, Figure 1As shown, along the axial direction of the roller body 1, one of the sides where the support frame 4 and the end cover 2 are close to each other is provided with a first mounting member 40, and the other side corresponding to the first mounting member 40 is provided with a second mounting member 20, and the first mounting member 40 and the second mounting member 20 cooperate with each other.

[0076] The first mounting member 40 and the second mounting member 20 cooperate to fix the end cover 2 and the support frame 4, thereby preventing the end cover 2 from being separated from the support frame 4 under the action of external force, thereby improving the installation stability of the roller body 1.

[0077] Exemplarily, the number of the first mounting members 40 may include at least one, and the number of the second mounting members 20 is equal to the number of the first mounting members 40. When there are multiple first mounting members 40, the arrangement of the multiple first mounting members 40 may be arranged in an array distribution; or they may be arranged on the same straight line. The arrangement of the multiple first mounting members 40 may be determined according to actual conditions, and the present disclosure does not specifically limit it.

[0078] In one embodiment, the first mounting member 40 includes a mounting protrusion 401, and the second mounting member 20 includes a mounting groove 201 (such as Figure 2 as shown) or mounting hole 202 (as shown Figure 3 shown).

[0079] For example, Figure 2 As shown, along the axial direction of the roller body 1, the first mounting member 40 is arranged on the side of the support frame 4 facing the end cover 2. For example, the first mounting member 40 can be connected to the support frame 4 by welding, riveting, clamping or bolting. For example, the first mounting member 40 can also be formed into an integral structure with the support frame 4 by an integral molding process. For example, the first mounting member 40 can be formed at the same time when the support frame 4 is prepared. For example, along the axial direction of the roller body 1, the side of the support frame 4 facing the roller body 1 is convexly provided to form a boss, and the boss is the first mounting member 40; or, a pit is provided on the side of the support frame 4 facing the roller body 1, and the pit is concave in the direction away from the roller body 1, and a first mounting member 40 is formed between two adjacent pits. The above pits and bosses can be made by stamping or injection molding.

[0080] For example, Figure 2 As shown, along the axial direction of the roller body 1 , the mounting groove 201 is arranged on a side of the end cover 2 facing the support frame 4 .

[0081] Specifically, the mounting groove 201 has an opening for the mounting protrusion 401 to be inserted into the mounting groove 201. The mounting groove 201 can be a circular groove, a square groove, etc. The cavity shape and cavity size of the mounting groove 201 can be determined according to actual conditions.

[0082] For example, Figure 3As shown, both ends of the mounting hole 202 are open. One end of the mounting hole 202 is open for the mounting protrusion 401 to be inserted into the mounting hole 202, and the other end of the mounting hole 202 is open for at least part of the mounting protrusion 401 to pass through the mounting hole 202. The mounting hole 202 can be a circular hole, a square hole, an elliptical hole, etc. The shape and diameter of the mounting hole 202 can be determined according to actual conditions.

[0083] In the embodiment of the present disclosure, a mounting protrusion 401 is provided on the support frame 4, and a mounting groove 201 or a mounting hole 202 matching the mounting protrusion 401 is provided on the end cover 2. The mounting protrusion 401 is snap-fitted and fixed to the mounting groove 201 or the mounting hole 202, thereby connecting the support frame 4 and the end cover 2. The installation method is simple and practical.

[0084] In one embodiment, Figure 2-Figure 3 As shown, the end cover 2 and the first mounting member 40 are coaxially arranged.

[0085] Exemplarily, the mounting groove 201 and the mounting hole 202 of the second mounting member 20 are arranged at the center of the side of the end cover 2 away from the short shaft 3. When the first mounting member 40 is inserted into the mounting groove 201 or the mounting hole 202, with the cooperation of the first mounting member 40 and the second mounting member 20, the axes of the first mounting member 40 and the end cover 2 are collinear, further improving the coaxiality of the installation of the short shaft 3 and the roller body 1, thereby improving the smoothness of the roller body 1 during rotation.

[0086] In one embodiment, Figure 4 As shown, the first mounting member 40 and the second mounting member 20 are conical structures, the small end of the first mounting member 40 is arranged toward the second mounting member 20, and the large end of the second mounting member 20 is arranged toward the first mounting member 40.

[0087] Specifically, the mounting protrusion 401 is a frustum structure, the mounting hole 202 or the mounting groove 201 is a conical structure, and the large end of the mounting groove 201 is arranged toward the mounting protrusion 401, so that the mounting protrusion 401 can enter the mounting groove 201 from the large end, and the inclined wall of the mounting protrusion 401 is in contact with the inclined wall of the mounting groove 201, which plays a guiding effect and provides convenience for installation. At the same time, due to the influence of processing errors or long-term use, even if deformation occurs, the mounting protrusion 401 with a conical structure and the mounting groove 201 can also play a role of active adjustment to a certain extent, which can provide a certain amount of adjustment and improve the flexibility of installation. In addition, the first mounting member 40 and the second mounting member 20 with a conical structure can also ensure good coaxiality.

[0088] In one embodiment, Figure 5 and Figure 6 As shown, the cross section of the mounting protrusion 401 is a T-shaped structure, and one end of the mounting groove 201 is provided with an opening, and the other end is provided with a closed end.

[0089] It should be noted that the mounting protrusion 401 may include a strip structure with a T-shaped cross section, and the mounting protrusion 401 includes a first clip strip and a second clip strip that are perpendicularly arranged, one end of the first clip strip is connected to the support frame 4, and the other end of the first clip strip is connected to the middle of the second clip strip to form a T-shaped mounting protrusion 401. The cross-sectional shape of the mounting groove 201 matches the cross-sectional shape of the mounting protrusion 401. In addition, the mounting protrusion 401 can also be set to other shapes such as L-shaped, which can be determined according to actual conditions, and the present disclosure does not make specific limitations.

[0090] The length of the mounting protrusion 401 is less than or equal to the extension length of the mounting groove 201. When the length of the mounting protrusion 401 is less than the length of the mounting groove 201, the other end of the mounting protrusion 401 may contact the closed end of the mounting groove 201.

[0091] One end of the mounting groove 201 penetrates through the side wall of the end cover 2 to form an open end of the mounting groove 201 , and the other end extends toward the inside of the end cover 2 along the insertion direction to form a closed end of the mounting groove 201 .

[0092] During installation, the end cover 2 is moved so that the mounting protrusion 401 is inserted into the mounting groove 201 from the open end and moves along the mounting groove 201 until the end of the mounting protrusion 401 contacts the closed end of the mounting groove 201. In the embodiment of the present disclosure, by providing the mounting protrusion 401 and the mounting groove 201 with one end open and the other end closed, the end cover 2 is installed and fixed on the support frame 4, and the installation method is simple and practical.

[0093] In one embodiment, Figure 7 As shown, the installation groove 201 includes a guide groove 2011 and a limiting groove 2012. One end of the guide groove 2011 is open for inserting the installation protrusion 401. The other end of the guide groove 2011 is connected to the limiting groove 2012. The limiting groove 2012 and the guide groove 2011 are set at an angle.

[0094] The cross-sectional shapes of the guide groove 2011 and the limiting groove 2012 match the cross-sectional shape of the mounting protrusion 401. The guide groove 2011 is used to guide the movement of the mounting protrusion 401, and the limiting groove 2012 is used to limit the position of the mounting protrusion 401.

[0095] During installation, the end cover 2 is moved so that the installation protrusion 401 is inserted into the guide groove 2011 from the open end, and moves along the guide groove 2011 until the installation protrusion 401 reaches the limiting groove 2012. The limiting groove 2012 can pass through the center of the end cover 2, and the guide groove 2011 and the limiting groove 2012 are arranged vertically. The installation protrusion 401 can be moved along the guide groove 2011 toward the center of the end cover 2 until it falls into the limiting groove 2012.

[0096] Multiple mounting protrusions 401 and limiting grooves 2012 may be provided, and the multiple limiting grooves 2012 or mounting protrusions 401 may be unevenly distributed, so that when both are in the final position, all mounting protrusions 401 fall into the limiting grooves 2012 at the same time.

[0097] In the embodiment disclosed in the present invention, the fixation between the end cover 2 and the support frame 4 is achieved by providing a mounting protrusion 401, a guide groove 2011 and a limit groove 2012. During installation, the mounting protrusion 401 is inserted from the open end of the guide groove 2011 and moves along the guide groove 2011 until it enters the limit groove 2012. When the roller body 1 is heavy and is subjected to external force, the mounting protrusion 401 is not easy to fall out of the limit groove 2012, which plays a locking role, thereby improving the connection firmness between the end cover 2 and the support frame 4.

[0098] The present disclosure is described by taking the example that the mounting protrusion 401 is arranged on the support frame 4 and the mounting groove 201 or the mounting hole 202 is arranged on the end cover 2. Adaptive adjustment can be made for the situation that the positions of the two are interchanged.

[0099] Specifically, Figure 8-Figure 9 As shown, the installation protrusion 401 and the installation groove 201 or the installation hole 202 can be interchanged, that is, the installation groove 201 or the installation hole 202 is set on the support frame 4, and the installation protrusion 401 is set on the end cover 2 corresponding to the installation groove 201 or the installation hole 202.

[0100] For example, Figure 8 As shown, the mounting protrusion 401 is arranged on the side of the end cover 2 away from the short shaft 3, that is, along the axial direction of the roller body 1, one end of the end cover 2 is provided with the short shaft 3, and the other end is provided with the mounting protrusion 401. At this time, the cross-section of the short shaft 3, the end cover 2 and the mounting protrusion 401 is similar to a cross-shaped structure, and the short shaft 3, the end cover 2 and the mounting protrusion 401 can be formed into an integrally formed structure by stamping or injection molding. The support frame 4 is provided with a mounting hole 202 (such as Figure 8 as shown) or mounting slot 201 (as shown Fig. 9 As shown). For example, one end of the mounting protrusion 401 away from the end cover 2 can extend into the mounting groove 201, and the notch of the mounting groove 201 is arranged toward the end cover 2, the mounting groove 201 plays a role in mounting and supporting the mounting protrusion 401, and the groove bottom of the mounting groove 201 plays a role in limiting the mounting protrusion 401; or, one end of the mounting protrusion 401 away from the end cover 2 passes through the mounting hole 202, that is, the mounting protrusion 401 is inserted into the mounting hole 202 from one end opening of the mounting hole 202 and passes out from the other end opening.

[0101] In one embodiment, Figure 1-Figure 9As shown, the support frame 4 includes a base 41 and a column 42 , the column 42 is arranged on the base 41 and is vertically arranged relative to the base 41 , and the first mounting member 40 or the second mounting member 20 is arranged on a side of the column 42 facing the end cover 2 .

[0102] The base 41 may be a rectangular parallelepiped structure, the top and bottom surfaces of the base 41 are smooth and flat, and the overall support effect is good. Along the axial direction of the roller body 1, the length of the base 41 is greater than the roller body 1. The column 42 is located at the end of the base 41 and is vertically arranged relative to the base 41. The base 41 and the column 42 form an L-shaped structure, and a storage space for accommodating the roller body 1 is enclosed between the base 41 and the column 42.

[0103] The number of columns 42 can be selected to be two, and the two columns 42 are respectively arranged at the two ends of the base 41. The two columns 42 and the two end covers 2 are correspondingly arranged. With the cooperation of the first mounting member 40 and the second mounting member 20, the two end covers 2 can be connected to the support frame 4 to ensure the rotation balance of the roller body 1.

[0104] In the embodiment of the present disclosure, the first mounting member 40 or the second mounting member 20 is disposed on the column 42, so that a certain height distance exists between the roller body 1 and the base 41, and the roller body 1 is suspended, thereby avoiding rotational friction between the roller body 1 and the base 41. By using the column 42, the connection position between the end cover 2 and the support frame 4 is the side of the end cover 2, which will not affect the winding and unwinding of the roller body 1.

[0105] In one embodiment, Fig.10 As shown, the end cover 2 is provided with a supporting portion 21 , and the supporting portion 21 is provided on the base 41 and vertically arranged relative to the base 41 .

[0106] The base 41 can be a rectangular parallelepiped structure. The base 41 has a good overall support effect. Along the axial direction of the roller body 1, the length of the base 41 is greater than the roller body 1. One end of the support part 21 is arranged on the base 41, and the other end is connected to the end cover 2. The support part 21 plays the role of supporting the end cover 2, so that there is a certain height distance between the roller body 1 and the base 41, and the roller body 1 is in a suspended state, avoiding rotational friction between the roller body 1 and the base 41. The connection position between the end cover 2 and the support frame 4 is the side of the end cover 2, which will not affect the winding and unwinding of the roller body 1.

[0107] The end cover 2 and the support part 21 can be connected by bolts, riveting, welding, etc. The end cover 2 and the support part 21 can also be integrally formed to reduce the parts assembly process and reduce the production cost.

[0108] In the embodiment of the present disclosure, it is only necessary to set the support portion 21 at the lower edge of the end cover 2, the bottom surface of the support portion 21 and the top surface of the base 41 are at least partially flush, and the support portion 21 can be connected to the base 41 by bolts, rivets, welding, etc. In this way, the connection structure between the end cover 2 and the support frame 4 can be omitted, which is equivalent to integrating the end cover 2 and the column 42, saving the number of parts and simplifying the process.

[0109] This embodiment also provides a lamination device, including the above-mentioned roller structure.

[0110] The end cap 2 of the roller structure is provided with a short shaft 3 on the side facing the roller body 1, and the core shaft structure is eliminated, so that the end cap 2 is a structure with a short shaft 3. After the end cap 2 is installed at the end of the roller body 1 along the axial direction of the roller body 1, the roller body 1 can be rotated relative to the short shaft 3, which is convenient for winding and unwinding of strip-shaped workpieces such as diaphragms. Since the length of the short shaft 3 is relatively small, it is not easy to deform, which improves the flexibility of the roller body 1 itself in rotation, reduces the cost of subsequent debugging and maintenance, and can reduce the powder loss caused by the large friction caused by the diaphragm being stuck, thereby improving the quality of the finished product.

[0111] The number of rollers can be multiple, for example, two roller bodies 1 of the roller structure are arranged in parallel and spaced apart on the support frame 4, and there is a gap between the two roller bodies 1, and the gap is used for composite products to pass through. The composite products in this embodiment are positive electrode sheets, negative electrode sheets and separators. When the composite products pass through the gap between the two roller bodies 1, they are squeezed by the two roller bodies 1 to form a stable unit sheet. Of course, it is not limited to this. The lamination equipment can also be used in other lamination fields to press other composite products, which is not specifically limited here.

[0112] It should be noted that the embodiments of the present invention are shown in the drawings and described in this specification is only an example of the principle of the present invention. It should be clearly understood by those skilled in the art that the principle of the present invention is not limited to any details or any components of the device shown in the drawings or described in the specification.

[0113] It should be understood that the utility model does not limit its application to the detailed structure and arrangement of the components proposed in this specification. The utility model can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned deformation forms and modified forms fall within the scope of the utility model. It should be understood that the utility model disclosed and defined in this specification extends to all alternative combinations of two or more individual features mentioned or evident in the text and / or the drawings. All these different combinations constitute multiple alternative aspects of the utility model. The embodiments described in this specification illustrate the best known methods for implementing the utility model and will enable those skilled in the art to utilize the utility model.

[0114] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variation, use, or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and example embodiments are to be considered as exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.

[0115] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of the present invention is limited only by the appended claims.

Claims

1. A roller structure, characterized in that: include: Roller body (1); An end cover (2) is arranged at least at one end of the roller body (1) along the axial direction of the roller body (1), a short shaft (3) is arranged on the side of the end cover (2) facing the roller body (1), the short shaft (3) passes through the roller body (1), and the roller body (1) can rotate relative to the short shaft (3); Wherein, along the axial direction of the roller body (1), the length of the short axis (3) is smaller than the length of the roller body (1), and the central axis of the short axis (3) and the central axis of the roller body (1) are arranged in parallel; A support frame (4) is connected to the end cover (2) and is used to support the roller body (1); along the axial direction of the roller body (1), one of the sides where the support frame (4) and the end cover (2) are close to each other is provided with a first mounting member (40), and the other side is provided with a second mounting member (20) corresponding to the first mounting member (40), and the first mounting member (40) and the second mounting member (20) cooperate.

2. The roller structure according to claim 1, characterized in that: The first mounting member (40) comprises a mounting protrusion (401), and the second mounting member (20) comprises a mounting groove (201) or a mounting hole (202).

3. The roller structure according to claim 2, characterized in that: The first mounting member (40) and the second mounting member (20) are conical structures, the small end of the first mounting member (40) is arranged toward the second mounting member (20), and the large end of the second mounting member (20) is arranged toward the first mounting member (40).

4. The roller structure according to claim 2, characterized in that: The short shaft (3), the end cover (2) and the roller body (1) are coaxially arranged; And / or, the end cover (2) and the first mounting member (40) are coaxially arranged.

5. The roller structure according to claim 2, characterized in that: The support frame (4) comprises a base (41) and a column (42), wherein the column (42) is arranged on the base (41) and is vertically arranged relative to the base (41), and the first mounting member (40) or the second mounting member (20) is arranged on a side of the column (42) facing the end cover (2).

6. The roller structure according to claim 2, characterized in that: The cross section of the mounting protrusion (401) is a T-shaped structure, and one end of the mounting groove (201) is provided with an opening, and the other end is provided with a closed end.

7. The roller structure according to claim 6, characterized in that: The mounting groove (201) comprises a guide groove (2011) and a limiting groove (2012); one end of the guide groove (2011) is open for the mounting protrusion (401) to be inserted; the other end of the guide groove (2011) is connected to the limiting groove (2012); the limiting groove (2012) and the guide groove (2011) are arranged at an angle.

8. The roller structure according to claim 1, characterized in that: The support frame (4) comprises a base (41); the end cover (2) is provided with a support portion (21), and the support portion (21) is arranged on the base (41) and is vertically arranged relative to the base (41).

9. The roller structure according to claim 1, characterized in that: The short shaft (3) and the end cover (2) are an integrally formed structure; And / or, the first mounting member (40) or the second mounting member (20) arranged on the end cover (2) and the end cover (2) are an integrally formed structure; And / or, the first mounting member (40) or the second mounting member (20) arranged on the support frame (4) and the support frame (4) are an integrally formed structure.

10. The roller structure according to any one of claims 1 to 9, characterized in that: The roller structure further comprises a bearing (5), wherein the bearing (5) is sleeved on the outside of the short shaft (3) and arranged between the short shaft (3) and the roller body (1).

11. A lamination device, characterized in that: It comprises the roller structure as described in any one of claims 1 to 10.

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