Winding machine feeding mechanism

Abstract

An embodiment of the present invention provides a winding machine feeding mechanism, which relates to the field of lithium battery manufacturing technology. The winding machine feeding mechanism sets a first clamping roller group at one end of the first sheet feeding mounting seat close to the second sheet feeding mounting seat, and the first deviation correction component is set on the first mounting base and is connected to the first sheet feeding mounting seat in a transmission manner; the second clamping roller group is set at one end of the second sheet feeding mounting seat close to the first sheet feeding mounting seat, and the second deviation correction component is set on the second mounting base and is connected to the second sheet feeding mounting seat in a transmission manner. That is, the feeding and deviation correction actions of the first pole piece and the second pole piece are realized in one mechanism, which improves its degree of integration. Compared with the prior art, the winding machine feeding mechanism provided by the present invention greatly reduces the distance between the position where the deviation correction action is realized and the sheet feeding roller, realizes deviation correction within the full length range of the pole piece, ensures the alignment of the pole piece, and the alignment effect is more stable, thereby ensuring the quality of the battery cell.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery manufacturing, and in particular to a feeding mechanism of a winding machine. Background Art

[0002] At present, the production process of power lithium batteries mainly forms battery cells by winding cathode, anode sheets and separators on a winding machine. With the improvement of battery performance and battery technology, the alignment of cathode and anode sheets of formed battery cells is one of the important parameters of battery cell quality. During the winding process, the electrode sheets need to pass through a series of deviation correction and alignment mechanisms to ensure that after the battery cells are wound and formed, the alignment of cathode and anode sheets is within a certain error range to ensure the quality of the produced battery cells.

[0003] In the prior art, the deviation correction mechanism and the sheet feeding mechanism are usually separately arranged, that is, the electrode sheet enters the sheet feeding mechanism after the deviation correction, and then enters the winding machine for winding. This arrangement may cause the electrode sheet to shift when passing through the sheet feeding mechanism, making it impossible to guarantee the final deviation correction effect and the alignment of the positive and negative electrodes, which affects the production of the battery cell. Summary of the invention

[0004] The objects of the present invention include, for example, providing a feeding mechanism for a winding machine, which can integrate the feeding and correction actions, effectively complete the functions of electrode feeding and correction, ensure the alignment of the positive and negative electrodes during the winding process, greatly improve the quality of the produced battery cells, and improve the product qualification rate.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a feeding mechanism of a winding machine, comprising a first mounting base, a second mounting base, a first film feeding mounting seat, a second film feeding mounting seat, a first clamping roller group, a second clamping roller group, a first deviation correction component and a second deviation correction component, wherein the first film feeding mounting seat and the second film feeding mounting seat are arranged opposite to each other and are used to be arranged on the feeding side of the winding needle mechanism;

[0007] The first clamping roller group is arranged at one end of the first sheet feeding mounting seat close to the second sheet feeding mounting seat, and is used for clamping and conveying the first pole piece to the needle winding mechanism; the first deviation correcting assembly is arranged on the first mounting base and is transmission-connected to the first sheet feeding mounting seat, and is used for driving the first sheet feeding mounting seat to move along the first direction, so as to correct the deviation of the first pole piece;

[0008] The second clamping roller group is arranged at one end of the second film feeding mounting seat close to the first film feeding mounting seat, and is used for clamping and conveying the second pole piece to the needle winding mechanism; the second deviation correcting assembly is arranged on the second mounting base and is transmission-connected to the second film feeding mounting seat, and is used for driving the second film feeding mounting seat to move along the second direction, so as to correct the deviation of the second pole piece;

[0009] The first direction is perpendicular to the conveying direction of the first pole piece, the second direction is perpendicular to the conveying direction of the second pole piece, and the first direction and the second direction are parallel to each other.

[0010] In an optional embodiment, the first clamping roller group includes a first film feeding roller and a first clamping roller, the first film feeding roller is arranged at one end of the first film feeding mounting seat, the first clamping roller and the first film feeding roller are arranged opposite to each other and are respectively used to roll against the two side surfaces of the first pole piece;

[0011] The second clamping roller group includes a second film feeding roller and a second clamping roller, the second film feeding roller is arranged at one end of the second film feeding mounting seat, the second clamping roller and the second film feeding roller are arranged opposite to each other, and are respectively used for rolling against the two side surfaces of the second pole piece, and the second clamping roller is arranged on the side of the second film feeding roller away from the first clamping roller.

[0012] In an optional embodiment, a first film feeding driving member is disposed on the first film feeding mounting seat, and the first film feeding driving member is drivingly connected to the first film feeding roller for driving the first film feeding roller to rotate;

[0013] The second film feeding mounting seat is also provided with a second film feeding driving member, and the second film feeding driving member is drivingly connected with the second film feeding roller for driving the second film feeding roller to rotate.

[0014] In an optional embodiment, the first clamping roller group further includes a first clamping driving member and a first clamping mounting seat, the first clamping roller is rotatably arranged on the first clamping mounting seat, one end of the first clamping driving member is connected to the first film feeding mounting seat, and the other end of the first clamping driving member is transmission-connected to the first clamping mounting seat, and is used to drive the first clamping mounting seat to move, so that the first clamping roller approaches or moves away from the first film feeding roller;

[0015] The second clamping roller group also includes a second clamping drive member and a second clamping mounting seat. The second clamping roller is rotatably arranged on the second clamping mounting seat. One end of the second clamping drive member is connected to the second film feeding mounting seat. The other end of the second clamping drive member is transmission-connected to the second clamping mounting seat for driving the second clamping mounting seat to move so that the second clamping roller approaches or moves away from the second film feeding roller.

[0016] In an optional embodiment, a first elastic member is provided on the first clamping mounting seat, and the first clamping driving member is connected to the first clamping mounting seat via the first elastic member so that the first clamping roller is elastically supported against the surface of the first pole piece; a second elastic member is provided on the second clamping mounting seat, and the second clamping driving member is connected to the second clamping mounting seat via the second elastic member so that the second clamping roller is elastically supported against the surface of the second pole piece.

[0017] In an optional embodiment, the first clamping roller and the first film feeding roller are both one-way rollers, so that a first one-way conveying channel is formed between the first clamping roller and the first film feeding roller; the second clamping roller and the second film feeding roller are both one-way rollers, so that a second one-way conveying channel is formed between the second clamping roller and the second film feeding roller.

[0018] In an optional embodiment, the first deflection correction component includes a first deflection correction drive member and a first deflection correction sensor, the first deflection correction sensor is arranged on the first mounting base and located at the feeding side of the first clamping roller group, the first deflection correction drive member is respectively connected to the first mounting base and the first sheet feeding mounting seat, and is connected to the first deflection correction sensor, and is used to drive the first sheet feeding mounting seat to move along the first direction;

[0019] The second correcting assembly includes a second correcting drive component and a second correcting sensor. The second correcting sensor is arranged on the second sheet feeding mounting seat and is located on the feeding side of the second clamping roller group. The second correcting drive component is respectively connected to the second mounting base and the second sheet feeding mounting seat, and is connected to the second correcting sensor for driving the second sheet feeding mounting seat to move along the second direction.

[0020] In an optional embodiment, the winding machine feeding mechanism also includes a first diaphragm roller group and a second diaphragm roller group, the first diaphragm roller group is arranged between the first film feeding mounting seat and the second film feeding mounting seat, and is used to convey the first diaphragm to the winding needle mechanism, and the second diaphragm roller group is arranged on the lower side of the first film feeding mounting seat or the second film feeding mounting seat, and is used to convey the second diaphragm to the winding needle mechanism.

[0021] In an optional embodiment, the winding machine feeding mechanism also includes a closing roller group, which is used to be arranged on the feeding side of the winding needle mechanism, and the closing roller group is arranged on the discharge side of the first clamping roller group and the second clamping roller group, and is used to merge the second diaphragm, the first pole piece, the first diaphragm and the second pole piece and convey them to the winding needle mechanism.

[0022] In an optional embodiment, the sheet-closing roller group includes a first sheet-closing mounting seat, a second sheet-closing mounting seat, a first sheet-closing roller, a second sheet-closing roller and a sheet-closing driving member, the first sheet-closing roller is rotatably set on the first sheet-closing mounting seat, the second sheet-closing roller is rotatably set on the second sheet-closing mounting seat, and the sheet-closing driving member is transmission-connected to the first sheet-closing mounting seat for driving the first sheet-closing mounting seat to move along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0023] The beneficial effects of the embodiments of the present invention include, for example:

[0024] The feeding mechanism of the winding machine provided by the present invention is characterized in that the first clamping roller group is arranged at one end of the first sheet feeding mounting seat close to the second sheet feeding mounting seat, and is used to clamp and convey the first pole piece to the winding needle mechanism, and the first deviation correction component is arranged on the first mounting base and is connected to the first sheet feeding mounting seat in a transmission manner, and is used to drive the first sheet feeding mounting seat to move along the first direction, so as to correct the deviation of the first pole piece; the second clamping roller group is arranged at one end of the second sheet feeding mounting seat close to the first sheet feeding mounting seat, and is used to clamp and convey the second pole piece to the winding needle mechanism, and the second deviation correction component is arranged on the second mounting base and is connected to the second sheet feeding mounting seat in a transmission manner, and is used to drive the second sheet feeding mounting seat to move along the second direction, so as to correct the deviation of the second pole piece. That is, the feeding and correction actions of the first pole piece are realized in one mechanism, and the feeding and correction actions of the second pole piece are realized in one mechanism, which improves the degree of integration, greatly reduces the distance between the position where the deviation correction action is realized and the sheet feeding roller, realizes the correction within the full length range of the pole piece, ensures the alignment of the pole piece, and the alignment effect is more stable, and ensures the quality of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1A schematic structural diagram of a feeding mechanism of a winding machine provided in a first embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the working state of the feeding mechanism of the winding machine provided in the first embodiment of the present invention;

[0028] Figure 3 for Figure 1 A schematic diagram of the connection structure of the first film feeding mounting seat at a first viewing angle;

[0029] Figure 4 for Figure 1 A schematic diagram of the connection structure of the first film feeding mounting seat in the middle under a second viewing angle;

[0030] Figure 5 for Figure 1 A schematic diagram of the connection structure of the second film feeding mounting seat at a first viewing angle;

[0031] Figure 6 for Figure 1 A schematic diagram of the connection structure of the second film feeding mounting seat at a second viewing angle;

[0032] Figure 7 A schematic structural diagram of a feeding mechanism of a winding machine provided in a second embodiment of the present invention;

[0033] Figure 8 A schematic diagram of the working state of the feeding mechanism of the winding machine provided in the second embodiment of the present invention;

[0034] Fig. 9 for Figure 7 Schematic diagram of the structure of the middle lamination roller group.

[0035] Icons: 100-winding machine feeding mechanism; 110-first film feeding mounting seat; 120-first mounting base; 130-second film feeding mounting seat; 140-second mounting base; 150-first clamping roller group; 151-first film feeding roller; 153-first clamping roller; 155-first film feeding driving member; 157-first clamping driving member; 159-first clamping mounting seat; 1591-first elastic member; 160-film closing roller group; 160a-first diaphragm roller group; 160b-second diaphragm roller group; 161-first film closing mounting seat; 163-first film closing roller; 165-second film closing roller; 167-film closing driving member Moving part; 169-second sheet-joining mounting seat; 170-second clamping roller group; 171-second sheet-feeding roller; 173-second clamping roller; 175-second sheet-feeding driving member; 177-second clamping driving member; 179-second clamping mounting seat; 1791-second elastic member; 180-first deviation correction component; 181-first deviation correction driving member; 183-first deviation correction sensor; 190-second deviation correction component; 191-second deviation correction driving member; 193-second deviation correction sensor; 200a-first pole piece; 200b-second pole piece; 200c-first diaphragm; 200d-second diaphragm; 300-winding needle mechanism. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They 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.

[0040] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0041] As disclosed in the background technology, the feeding device in the prior art usually has a deviation correction mechanism and a film feeding mechanism separately arranged to respectively realize the deviation correction action and the film feeding action. When the two mechanisms are separately arranged, the electrode sheet needs to move between the deviation correction mechanism and the film feeding mechanism and then enter the winding mechanism, which undoubtedly greatly increases the conveying length of the electrode sheet. In the process of the electrode sheet passing through the film feeding mechanism and entering the winding mechanism, the electrode sheet is easily offset again due to the large span, so that the final deviation correction effect cannot be guaranteed, and then the alignment of the positive and negative electrodes cannot be guaranteed, which affects the production of the battery cell.

[0042] In addition, the existing feeding device usually uses a feeding mechanism to directly feed the electrode into the winding machine. The electrode is not combined by a special combining mechanism, resulting in poor stability of the positive and negative electrode sheets and diaphragms, affecting the winding effect of the winding needle.

[0043] In order to solve the above problems, an embodiment of the present invention provides a new type of winding machine feeding mechanism, which can integrate the feeding, deviation correction and closing of the sheets together, effectively complete the functions of electrode feeding, deviation correction and closing, ensure the alignment of the positive and negative electrodes during the winding process, greatly improve the quality of the produced battery cells, and improve the product qualification rate.

[0044] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0045] First embodiment

[0046] Please refer to Figures 1 to 6 The present embodiment provides a winding machine feeding mechanism 100, which can integrate the feeding and deviation correction actions, effectively complete the electrode feeding and deviation correction functions, ensure the alignment of the positive and negative electrodes during the winding process, greatly improve the quality of the produced battery cells, and improve the product qualification rate.

[0047] The winding machine feeding mechanism 100 provided in this embodiment includes a first film feeding mounting seat 110, a second film feeding mounting seat 130, a first clamping roller group 150, a second clamping roller group 170, a first deviation correction component 180, a second deviation correction component 190, a first mounting base 120 and a second mounting base 140. The first film feeding mounting seat 110 and the second film feeding mounting seat 130 are arranged opposite to each other and are used to be arranged on the feeding side of the winding needle mechanism 300; the first clamping roller group 150 is arranged at one end of the first film feeding mounting seat 110 close to the second film feeding mounting seat 130, and is used to clamp and convey the first pole piece 200a to the winding needle mechanism 300; the first deviation correction component 180 is arranged on the first mounting base 120 and is connected to the first film feeding mounting seat 110. A transmission connection is used to drive the first film feeding mounting seat 110 to move along the first direction to achieve correction of the first pole piece 200a; the second clamping roller group 170 is arranged at one end of the second film feeding mounting seat 130 close to the first film feeding mounting seat 110, and is used to clamp and convey the second pole piece 200b to the winding needle mechanism 300, and the second correction component 190 is arranged on the second mounting base 140 and is transmission connected to the second film feeding mounting seat 130, and is used to drive the second film feeding mounting seat 130 to move along the second direction to achieve correction of the second pole piece 200b; wherein the first direction is perpendicular to the conveying direction of the first pole piece 200a, the second direction is perpendicular to the conveying direction of the second pole piece 200b, and the first direction and the second direction are parallel to each other.

[0048] In this embodiment, the first sheet feeding mounting seat 110 and the second sheet feeding mounting seat 130 are both in the shape of rectangular strips, the first clamping roller set 150 is arranged at one end in the extension direction of the first sheet feeding mounting seat 110, and the second clamping roller set 170 is arranged at one end in the extension direction of the second sheet feeding mounting seat 130, wherein the first clamping roller set 150 and the second clamping roller set 170 are arranged oppositely and spaced apart. The first sheet feeding mounting seat 110 and the second sheet feeding mounting seat 130 are symmetrically arranged along the left-right direction, the first pole piece 200a and the second pole piece 200b are respectively the positive pole piece and the negative pole piece, wherein the conveying direction of the first pole piece 200a is determined by the first clamping roller set 150, and the conveying direction of the second pole piece 200b is determined by the second clamping roller set 170. The first direction is perpendicular to the extension direction of the first sheet feeding mounting seat 110, i.e., the inner and outer direction shown in the figure. The first deviation correction component 180 drives the first sheet feeding mounting seat 110 to move along the first direction, so that the first pole piece 200a on the first clamping roller group 150 can be moved in the inner and outer direction, thereby realizing the deviation correction of the first pole piece 200a. The second direction is perpendicular to the extension direction of the second sheet feeding mounting seat 130, i.e., the inner and outer direction shown in the figure. The second deviation correction component 190 drives the second sheet feeding mounting seat 130 to move along the second direction, so that the second pole piece 200b on the second clamping roller group 170 can be moved in the inner and outer direction, thereby realizing the deviation correction of the second pole piece 200b. By integrating the sheet feeding and deviation correction actions together, the risk of deviation correction action and sheet feeding action being too far away, resulting in another offset after the deviation correction is completed, thereby ensuring the alignment of the pole pieces during winding, improving the quality of the battery cell, and improving the product qualification rate.

[0049] It should be noted that in this embodiment, the first film feeding mounting seat 110 is connected to the first deviation correcting assembly 180 by transmission, and the first deviation correcting assembly 180 is arranged on the first mounting base 120, and the second film feeding mounting seat 130 is connected to the second deviation correcting assembly 190 by transmission, and the second deviation correcting assembly 190 is arranged on the second mounting base 140. A winding needle mechanism 300 is also arranged below the first film feeding mounting seat 110 and the second film feeding mounting seat 130. The winding needle mechanism 300 serves as the main working mechanism of the winding machine to realize the winding of the pole piece. The first pole piece 200a and the second pole piece 200b are respectively conveyed by the first clamping roller group 150 and the second clamping roller group 170 and then wound by the winding mechanism. The winding structure and winding principle can refer to the existing winding mechanism.

[0050] The first clamping roller set 150 includes a first film feeding roller 151 and a first clamping roller 153. The first film feeding roller 151 is arranged at one end of the first film feeding mounting seat 110. The first clamping roller 153 and the first film feeding roller 151 are arranged opposite to each other and are respectively used to roll against the two side surfaces of the first pole piece 200a. The second clamping roller set 170 includes a second film feeding roller 171 and a second clamping roller 173. The second film feeding roller 171 is arranged at one end of the second film feeding mounting seat 130. The second clamping roller 173 and the second film feeding roller 171 are arranged opposite to each other and are respectively used to roll against the two side surfaces of the second pole piece 200b. The second clamping roller 173 is arranged on the side of the second film feeding roller 171 away from the first clamping roller 153.

[0051] In this embodiment, a conveying space for conveying the first electrode sheet 200a is formed between the first clamping roller 153 and the first feeding roller 151. When the electrode sheet is actually conveyed, the gap width between the first clamping roller 153 and the first feeding roller 151 is adapted to the first electrode sheet 200a, so that the first clamping roller 153 and the second feeding roller 171 can respectively abut against the two side surfaces of the first electrode sheet 200a. A conveying space for conveying the second electrode sheet 200b is formed between the second clamping roller 173 and the second feeding roller 171. When the electrode sheet is actually conveyed, the gap width between the second clamping roller 173 and the second feeding roller 171 is adapted to the second electrode sheet 200b, so that the second clamping roller 173 and the second feeding roller 171 can respectively abut against the two side surfaces of the second electrode sheet 200b.

[0052] In this embodiment, the first film feeding roller 151 is arranged at one end of the first film feeding mounting seat 110 close to the second film feeding mounting seat 130, and can actively rotate relative to the first film feeding mounting seat 110, and the first clamping roller 153 can also rotate relatively to the first film feeding mounting seat 110; the second film feeding roller 171 is rotatably arranged at one end of the second film feeding mounting seat 130 close to the first film feeding mounting seat 110, and can actively rotate relative to the second film feeding mounting seat 130, and the second clamping roller 173 can also rotate relatively to the second film feeding mounting seat 130. The first clamping roller 153 is arranged on the side of the first film feeding roller 151 close to the second film feeding roller 171, and the second clamping roller 173 is arranged on the side of the second film feeding roller 171 away from the first film feeding roller 151, so that the two clamping rollers can be separated from each other to avoid installation inconvenience caused by insufficient spacing between the first film feeding roller 151 and the second film feeding roller 171. At the same time, a certain spacing can be created between the first pole piece 200a and the second pole piece 200b to avoid mutual influence caused by too close distance.

[0053] In this embodiment, a first film feeding driving member 155 is provided on the first film feeding mounting seat 110, and the first film feeding driving member 155 is transmission-connected to the first film feeding roller 151 for driving the first film feeding roller 151 to rotate; a second film feeding driving member 175 is also provided on the second film feeding mounting seat 130, and the second film feeding driving member 175 is transmission-connected to the second film feeding roller 171 for driving the second film feeding roller 171 to rotate.

[0054] In this embodiment, the first film feeding drive member 155 and the second film feeding drive member 175 are both drive motors, and the driving force is provided by the drive motors. Specifically, the first film feeding drive member 155 is connected to the first film feeding roller 151 through a transmission mechanism such as a transmission belt or a gear set, and the second film feeding drive member 175 is connected to the second film feeding roller 171 through a transmission mechanism such as a transmission belt or a gear set, thereby realizing the driving action of the first film feeding roller 151 and the second film feeding roller 171.

[0055] It is worth noting that in other preferred embodiments of the present invention, the first film feeding roller 151 and the second film feeding roller 171 can also be rotated in a self-driven manner. For example, driving parts are respectively provided at the ends of the first film feeding roller 151 and the second film feeding roller 171 to directly drive the two to rotate, which can also realize the film feeding action of the pole piece.

[0056] Furthermore, the first clamping roller group 150 also includes a first clamping drive member 157 and a first clamping mounting seat 159. The first clamping roller 153 is rotatably set on the first clamping mounting seat 159. One end of the first clamping drive member 157 is connected to the first film feeding mounting seat 110, and the other end of the first clamping drive member 157 is transmission connected to the first clamping mounting seat 159, which is used to drive the first clamping mounting seat 159 to move so that the first clamping roller 153 is close to or away from the first film feeding roller 151.

[0057] In this embodiment, the first clamping drive member 157 is a first driving cylinder, which is arranged on the first film feeding mounting seat 110, and the piston rod of the first driving cylinder is connected to the first clamping mounting seat 159, thereby being able to drive the first clamping mounting seat 159 to move, wherein the movement direction of the first clamping mounting seat 159 is the same as the connection direction of the first film feeding roller 151 and the first clamping roller 153, so that the first clamping roller 153 can approach or move away from the first film feeding roller 151, so that the first clamping roller 153 can leave the first film feeding roller 151 when the film is not driven, thereby facilitating loading.

[0058] Furthermore, the second clamping roller group 170 also includes a second clamping drive member 177 and a second clamping mounting seat 179. The second clamping roller 173 is rotatably set on the second clamping mounting seat 179. One end of the second clamping drive member 177 is connected to the second film feeding mounting seat 130, and the other end of the second clamping drive member 177 is transmission-connected to the second clamping mounting seat 179, which is used to drive the second clamping mounting seat 179 to move so that the second clamping roller 173 is close to or away from the second film feeding roller 171.

[0059] In this embodiment, the second clamping drive member 177 is a second driving cylinder, and the second driving cylinder is arranged on the second film feeding mounting seat 130. The piston rod of the second driving cylinder is connected to the second clamping mounting seat 179, thereby being able to drive the second clamping mounting seat 179 to move, wherein the movement direction of the second clamping mounting seat 179 is the same as the connecting direction of the second film feeding roller 171 and the second clamping roller 173, so that the second clamping roller 173 can approach or move away from the second film feeding roller 171, so that the second clamping roller 173 can leave the second film feeding roller 171 when the film is not driven, thereby facilitating loading.

[0060] In this embodiment, a first elastic member 1591 is provided on the first clamping mounting seat 159, and the first clamping driving member 157 is connected to the first clamping mounting seat 159 through the first elastic member 1591, so that the first clamping roller 153 is elastically pressed against the surface of the first pole piece 200a; a second elastic member 1791 is provided on the second clamping mounting seat 179, and the second clamping driving member 177 is connected to the second clamping mounting seat 179 through the second elastic member 1791, so that the second clamping roller 173 is elastically pressed against the surface of the second pole piece 200b.

[0061] It should be noted that the first elastic member 1591 and the second elastic member 1791 are both spring structures, and the piston rod of the first driving cylinder is connected to the first clamping mounting seat 159 through the first elastic member 1591, so that when the first clamping roller 153 is against the surface of the first pole piece 200a, the first elastic member 1591 is in a stretched state, providing the first clamping roller 153 with elastic force against the first pole piece 200a, so that the first clamping roller 153 is in an adaptive adjustment state, which not only ensures the abutment on the surface of the first pole piece 200a, but also avoids excessive extrusion of the first pole piece 200a. The piston rod of the second driving cylinder is connected to the second clamping mount 179 through the second elastic member 1791, so that when the second clamping roller 173 is pressed against the surface of the second pole piece 200b, the second elastic member 1791 is in a compressed state, providing elastic force to the second clamping roller 173 to press against the second pole piece 200b, so that the second clamping roller 173 is in an adaptive adjustment state, which not only ensures that it presses against the surface of the second pole piece 200b, but also avoids excessive squeezing of the second pole piece 200b.

[0062] In this embodiment, the first clamping roller 153 and the first film feeding roller 151 are both one-way rollers, so that a first one-way conveying channel is formed between the first clamping roller 153 and the first film feeding roller 151. By configuring the first clamping roller 153 and the first film feeding roller 151 as one-way rollers, it is possible to effectively prevent the first pole piece 200a from losing tension when it approaches the winding needle side, and the first pole piece 200a from rebounding under the action of tension. The second clamping roller 173 and the second film feeding roller 171 are both one-way rollers, so that a second one-way conveying channel is formed between the second clamping roller 173 and the second film feeding roller 171. By configuring the second clamping roller 173 and the second film feeding roller 171 as one-way rollers, it is possible to effectively prevent the second pole piece 200b from losing tension when it approaches the winding needle side, and the second pole piece 200b from rebounding under the action of tension.

[0063] The first deflection correction component 180 includes a first deflection correction drive member 181 and a first deflection correction sensor 183. The first deflection correction sensor 183 is arranged on the first mounting base 120 and is located on the feeding side of the first clamping roller group 150. The first deflection correction drive member 181 is respectively connected to the first mounting base 120 and the first film feeding mounting seat 110, and is connected to the first deflection correction sensor 183, and is used to drive the first film feeding mounting seat 110 to move along the first direction.

[0064] In this embodiment, the first deviation correction drive component 181 is a first deviation correction motor. Specifically, the first deviation correction motor is arranged on the first mounting base 120, and the first mounting base 120 is provided with a first slide rail, and the first slide rail is provided with a first slider, and the first slider is connected to the first film feeding mounting seat 110. The output shaft of the first deviation correction motor is connected to the first film feeding mounting seat 110 through a transmission mechanism such as a belt, thereby driving the first film feeding mounting seat 110 to move along the first direction.

[0065] The second deflection correction component 190 includes a second deflection correction drive member 191 and a second deflection correction sensor 193. The second deflection correction sensor 193 is arranged on the second mounting base 140 and is located on the feeding side of the second clamping roller group 170. The second deflection correction drive member 191 is respectively connected to the second mounting base 140 and the second film feeding mounting seat 130, and is connected to the second deflection correction sensor 193, and is used to drive the second film feeding mounting seat 130 to move along the second direction.

[0066] In this embodiment, the second deviation correction drive member 191 is a second deviation correction motor. Specifically, a second slide rail is also provided on the second mounting base 140, and a second slider is provided on the second slide rail. The second slider is connected to the second film feeding mounting seat 130. The output shaft of the second deviation correction motor is connected to the second film feeding mounting seat 130 through a transmission mechanism such as a belt, thereby driving the second film feeding mounting seat 130 to move along the second direction.

[0067] It should be noted that, in this embodiment, the first deflection correction sensor 183 is arranged above the first clamping roller group, and detects the edge of the first pole piece 200a. When it is detected that the first pole piece 200a is offset, the first deflection correction drive 181 drives the first sheet feeding mounting seat 110 to move, thereby realizing the deflection correction of the first pole piece 200a. The second deflection correction sensor 193 is arranged above the second clamping roller group, and detects the edge of the second pole piece 200b. When it is detected that the second pole piece 200b is offset, the second sheet feeding mounting seat 130 is driven to move by the first deflection correction drive member to realize the deflection correction of the second pole piece 200b. The first deflection correction sensor 183 and the second deflection correction sensor 193 can detect whether the pole piece is offset, and have the same structure and principle as conventional deflection correction sensors, which will not be described in detail here.

[0068] In summary, the winding machine feeding mechanism 100 provided in this embodiment integrates the deviation correction action and the film feeding action, avoids the separate setting of the deviation correction mechanism and the film feeding mechanism, shortens the distance between the deviation correction and the film feeding, improves its integration degree, realizes the deviation correction within the full length range of the pole piece when feeding the film, ensures the alignment of the pole piece, and the alignment effect is more stable. And it can monitor the deviation of the pole piece in real time and correct it, with good effectiveness. And when driving the film, the clamping force of the first clamping roller group 150 and the second clamping roller group 170 can be adaptive, and the pressure size can be adjusted, which ensures the film feeding effect of the pole piece, and the clamping roller groups can be separated from each other when not driving the film, which is convenient for loading. At the same time, in this embodiment, the first film feeding roller 151, the first clamping roller 153, the second clamping roller 173 and the second film feeding roller 171 are all unidirectional rollers, which can prevent the pole piece from losing tension when it is close to the winding needle side, and the pole piece will rebound under the action of tension.

[0069] Second embodiment

[0070] Please refer to Figures 7 to 9 This embodiment provides a winding machine feeding mechanism 100, whose basic structure and principle and the technical effects produced are the same as those of the first embodiment. For the sake of brief description, parts not mentioned in this embodiment may refer to the corresponding contents in the first embodiment.

[0071] The feeding mechanism 100 of the winding machine includes a first film feeding mounting seat 110, a second film feeding mounting seat 130, a first clamping roller group 150, a second clamping roller group 170, a first correcting assembly 180, a second correcting assembly 190, a first mounting base 120 and a second mounting base 140. The first film feeding mounting seat 110 and the second film feeding mounting seat 130 are arranged opposite to each other and are used to be arranged on the feeding side of the winding needle mechanism 300; the first clamping roller group 150 is arranged at one end of the first film feeding mounting seat 110 close to the second film feeding mounting seat 130, and is used to clamp and convey the first pole piece 200a to the winding needle mechanism 300. The first correcting assembly 180 is arranged on the first mounting base 120 and is transmission-connected to the first film feeding mounting seat 110. , used to drive the first film feeding mounting seat 110 to move along the first direction to realize the correction of the first pole piece 200a; the second clamping roller group 170 is arranged at one end of the second film feeding mounting seat 130 close to the first film feeding mounting seat 110, and is used to clamp and convey the second pole piece 200b to the winding needle mechanism 300, and the second correction component 190 is arranged on the second mounting base 140 and is transmission-connected to the second film feeding mounting seat 130, and is used to drive the second film feeding mounting seat 130 to move along the second direction to realize the correction of the second pole piece 200b; wherein the first direction is perpendicular to the conveying direction of the first pole piece 200a, the second direction is perpendicular to the conveying direction of the second pole piece 200b, and the first direction and the second direction are parallel to each other.

[0072] In this embodiment, the winding machine feeding mechanism 100 further includes a first diaphragm roller group 160a, a second diaphragm roller group 160b and a sheet-closing roller group 160. The first diaphragm roller group 160a is arranged between the first sheet-feeding mounting seat 110 and the second sheet-feeding mounting seat 130, and is used to convey the first diaphragm 200c to the winding needle mechanism 300. The second diaphragm roller group 160b is arranged at the lower side of the first sheet-feeding mounting seat 110 or the second sheet-feeding mounting seat 130, and is used to convey the second diaphragm 200d to the winding needle mechanism 300. The sheet-closing roller group 160 is used to be arranged at the feeding side of the winding needle mechanism 300, and the sheet-closing roller group 160 is arranged at the discharging side of the first clamping roller group 150 and the second clamping roller group 170, and is used to combine the second diaphragm 200d, the first pole piece 200a, the first diaphragm 200c and the second pole piece 200b and convey them to the winding needle mechanism 300.

[0073] It should be noted that the first diaphragm roller group 160a and the second diaphragm roller group 160b are used to transport the diaphragm, and the first diaphragm 200c, the first electrode piece 200a, the second diaphragm 200d and the second electrode piece 200b are arranged alternately, and their basic composition is consistent with the conventional diaphragm feeding mechanism. For details, please refer to the existing diaphragm feeding mechanism.

[0074] In this embodiment, the second diaphragm roller set 160b is arranged below the first sheet feeding mounting seat 110, so that the second diaphragm 200d is arranged on the surface of the first electrode sheet 200a after the sheets are combined.

[0075] In this embodiment, the closing roller group 160 is arranged below the first film feeding mounting seat 110 and the second film feeding mounting seat 130, and is located above the winding needle mechanism 300, so that the pole piece and the diaphragm are sent to the winding needle mechanism 300 after closing, ensuring the stability of winding.

[0076] The sheet-closing roller group 160 includes a first sheet-closing mounting seat 161, a second sheet-closing mounting seat 169, a first sheet-closing roller 163, a second sheet-closing roller 165 and a sheet-closing driving member 167. The first sheet-closing roller 163 is rotatably set on the first sheet-closing mounting seat 161, and the second sheet-closing roller 165 is rotatably set on the second sheet-closing mounting seat 169. The sheet-closing driving member 167 is transmission-connected to the first sheet-closing mounting seat 161, and is used to drive the first sheet-closing mounting seat 161 to move along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0077] It should be noted that, in the present embodiment, the third direction is the left-right direction, that is, the first sheet-closing mounting seat 161 moves in the left-right direction, thereby driving the first sheet-closing roller 163 to move in the left-right direction, approaching or moving away from the second sheet-closing roller 165, so that even after the diaphragm is cut off when the work station is changed, the position of the first sheet-closing roller 163 can be adjusted to ensure that the diaphragm always maintains a constant angle, so that the needle winding mechanism 300 can insert the needle at the same angle each time, reducing the occurrence of poor needle insertion.

[0078] In this embodiment, the sheet-closing driving member 167 is a driving cylinder and is connected to the first sheet-closing mounting seat 161, thereby driving the first sheet-closing mounting seat 161 to move, and the diaphragm and the pole piece are pre-combined through the first sheet-closing roller 163 and the second sheet-closing roller 165 to ensure that they enter the winding needle mechanism 300 in a relatively stable state for winding after the sheet-closing.

[0079] The winding machine feeding mechanism 100 provided in this embodiment can combine the diaphragm and the electrode sheet in advance by adding a sheet-closing roller group 160, so as to ensure that they enter the winding needle mechanism 300 for winding in a relatively stable state after the sheet-closing.

[0080] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A feeding mechanism for a winding machine, characterized in that: It includes a first mounting base, a second mounting base, a first film feeding mounting base, a second film feeding mounting base, a first clamping roller group, a second clamping roller group, a first deviation correcting assembly and a second deviation correcting assembly, wherein the first film feeding mounting base and the second film feeding mounting base are arranged opposite to each other and are used to be arranged on the feeding side of the needle winding mechanism; The first clamping roller group is arranged at one end of the first sheet feeding mounting seat close to the second sheet feeding mounting seat, and is used for clamping and conveying the first pole piece to the needle winding mechanism; the first deviation correcting assembly is arranged on the first mounting base and is transmission-connected to the first sheet feeding mounting seat, and is used for driving the first sheet feeding mounting seat to move along the first direction, so as to correct the deviation of the first pole piece; The second clamping roller group is arranged at one end of the second film feeding mounting seat close to the first film feeding mounting seat, and is used for clamping and conveying the second pole piece to the needle winding mechanism; the second deviation correcting assembly is arranged on the second mounting base and is transmission-connected to the second film feeding mounting seat, and is used for driving the second film feeding mounting seat to move along the second direction, so as to correct the deviation of the second pole piece; Wherein, the first direction is perpendicular to the conveying direction of the first pole piece, the second direction is perpendicular to the conveying direction of the second pole piece, and the first direction and the second direction are parallel to each other; The first clamping roller group includes a first film feeding roller and a first clamping roller, the first film feeding roller is arranged at one end of the first film feeding mounting seat, the first clamping roller and the first film feeding roller are arranged opposite to each other, and are respectively used to roll against the two side surfaces of the first pole piece; the second clamping roller group includes a second film feeding roller and a second clamping roller, the second film feeding roller is arranged at one end of the second film feeding mounting seat, the second clamping roller and the second film feeding roller are arranged opposite to each other, and are respectively used to roll against the two side surfaces of the second pole piece, and the second clamping roller is arranged on the side of the second film feeding roller away from the first clamping roller; the first film feeding mounting seat The seat is provided with a first film feeding drive member, and the first film feeding drive member is transmission-connected with the first film feeding roller for driving the first film feeding roller to rotate; the second film feeding mounting seat is also provided with a second film feeding drive member, and the second film feeding drive member is transmission-connected with the second film feeding roller for driving the second film feeding roller to rotate; the first clamping roller group also includes a first clamping drive member and a first clamping mounting seat, and the first clamping roller is rotatably arranged on the first clamping mounting seat, one end of the first clamping drive member is connected with the first film feeding mounting seat, and the other end of the first clamping drive member is transmission-connected with the first clamping mounting seat for driving The first clamping mount moves to make the first clamping roller approach or move away from the first film feeding roller; the second clamping roller group also includes a second clamping drive member and a second clamping mount, and the second clamping roller is rotatably arranged on the second clamping mount, one end of the second clamping drive member is connected to the second film feeding mount, and the other end of the second clamping drive member is transmission-connected to the second clamping mount for driving the second clamping mount to move the second clamping mount so that the second clamping roller approaches or moves away from the second film feeding roller; a first elastic member is arranged on the first clamping mount, and the first clamping drive member is driven by the first elastic member The component is connected to the first clamping mounting seat so that the first clamping roller elastically abuts against the surface of the first pole piece; the second clamping mounting seat is provided with a second elastic component, and the second clamping driving component is connected to the second clamping mounting seat through the second elastic component so that the second clamping roller elastically abuts against the surface of the second pole piece; the first clamping roller and the first film feeding roller are both one-way rollers, so that a first one-way conveying channel is formed between the first clamping roller and the first film feeding roller; the second clamping roller and the second film feeding roller are both one-way rollers, so that a second one-way conveying channel is formed between the second clamping roller and the second film feeding roller.

2. The feeding mechanism of the winding machine according to claim 1, characterized in that: The first deflection correction component includes a first deflection correction driving member and a first deflection correction sensor. The first deflection correction sensor is arranged on the first mounting base and is located at the feeding side of the first clamping roller group. The first deflection correction driving member is respectively connected to the first mounting base and the first sheet feeding mounting seat, and is connected to the first deflection correction sensor, and is used to drive the first sheet feeding mounting seat to move along the first direction. The second correcting assembly includes a second correcting drive and a second correcting sensor. The second correcting sensor is arranged on the second mounting base and is located on the feeding side of the second clamping roller group. The second correcting drive is respectively connected to the second mounting base and the second sheet feeding mounting seat, and is connected to the second correcting sensor for driving the second sheet feeding mounting seat to move along the second direction.

3. The feeding mechanism of the winding machine according to claim 1, characterized in that: The feeding mechanism of the winding machine also includes a first diaphragm roller group and a second diaphragm roller group. The first diaphragm roller group is arranged between the first film feeding mounting seat and the second film feeding mounting seat, and is used to convey the first diaphragm to the winding needle mechanism. The second diaphragm roller group is arranged on the lower side of the first film feeding mounting seat or the second film feeding mounting seat, and is used to convey the second diaphragm to the winding needle mechanism.

4. The feeding mechanism of the winding machine according to claim 3, characterized in that: The feeding mechanism of the winding machine also includes a closing roller group, which is used to be arranged on the feeding side of the winding needle mechanism, and the closing roller group is arranged on the discharge side of the first clamping roller group and the second clamping roller group, and is used to merge the second diaphragm, the first pole piece, the first diaphragm and the second pole piece and transport them to the winding needle mechanism.

5. The feeding mechanism of the winding machine according to claim 4, characterized in that: The sheet-closing roller group includes a first sheet-closing mounting seat, a second sheet-closing mounting seat, a first sheet-closing roller, a second sheet-closing roller and a sheet-closing driving member, the first sheet-closing roller is rotatably set on the first sheet-closing mounting seat, the second sheet-closing roller is rotatably set on the second sheet-closing mounting seat, and the sheet-closing driving member is transmission-connected to the first sheet-closing mounting seat for driving the first sheet-closing mounting seat to move along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

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