Pole piece extension mechanism and die cutting device

Abstract

The utility model provides a pole piece extension mechanism and a die cutting device, and relates to the technical field of lithium ion battery production and processing equipment. According to the pole piece extension mechanism provided by the utility model, through the elastic component capable of moving in the second direction, the elastic component provides the elastic force for enabling the first roller assembly to be tightly attached to the pole piece, so that the first roller assembly can be continuously tightly attached to the pole piece by virtue of the elastic force provided by the elastic component even if the extension conditions of the incoming pole piece are different; therefore, the pole piece is flattened under the cooperation of the first roller assembly and the second roller assembly, that is, the pole piece extension mechanism provided by the invention can realize self-adaptive flattening of incoming pole pieces with different extension conditions.

Description

Technical Field

[0001] The present application relates to the technical field of lithium-ion battery production and processing equipment, and in particular to a pole piece extension mechanism and a die-cutting device. Background Art

[0002] In the lithium battery production process, laser die-cutting and slitting are key steps in battery formation. The die-cutting machine, based on the cell process requirements, cuts the positive and negative electrode sheets into the specified shape and size through steps such as unwinding, deflection correction, laser tab cutting, slitting, CCD size and defect detection, and tension control. Laser cutting is a key step in tab formation, and the tabs or sheets are generally flattened before laser cutting to better focus the laser on the sheet.

[0003] Traditional flattening devices cannot automatically adapt to varying material lengths or require manual adjustment. This material length variation is the primary cause of laser defocus, which can lead to tab-to-tab contact or even tape breakage, significantly increasing labor time, production costs, and reducing efficiency. Utility Model Content

[0004] In view of this, the present application provides a pole piece extension mechanism and a die-cutting device, the purpose of which is to solve the above technical problems to a certain extent.

[0005] In a first aspect, the present application provides a pole piece extension mechanism for flattening a pole piece, the extension mechanism comprising:

[0006] a first roller assembly comprising a first roller member having a first axis, the first roller member being configured to rotate about the first axis;

[0007] a second roller assembly comprising a second roller member having a second axis parallel to the first axis, the second roller member being configured to rotate about the second axis;

[0008] The second roller member and the first roller member are staggered along a first direction, a gap exists between the first roller member and the second roller member, the gap is for the pole piece to pass through, and the first roller member abuts one side of the pole piece, and the second roller member abuts the other side of the pole piece; the first direction is perpendicular to the first axis;

[0009] The pole piece extension mechanism also includes an elastic component, which includes an elastic member capable of moving along a second direction. The elastic member abuts against the first roller assembly to provide elastic force to make the first roller assembly close to the pole piece, and the second direction intersects with the first direction.

[0010] Preferably, the first roller assembly includes a first shaft member, and the first roller member is configured to be rotatably sleeved on the first shaft member;

[0011] The pole piece extension mechanism further includes a first retaining seat and a second retaining seat arranged opposite to each other along the first axis, the first retaining seat having a first accommodating portion for accommodating the first end of the first shaft member, and the second retaining seat having a second accommodating portion for accommodating the second end of the first shaft member, and the first accommodating portion and the second accommodating portion both extend along the second direction, so that the first end and the second end of the first shaft member can move in the first accommodating portion and the second accommodating portion respectively along the second direction;

[0012] The elastic member includes a first elastic portion provided in the first accommodation portion and a second elastic portion provided in the second accommodation portion, and the first elastic portion and the second elastic portion respectively abut against the first end and the second end of the first shaft member.

[0013] Preferably, the first retaining seat and the second retaining seat respectively have a first open portion and a second open portion; the first open portion and the first accommodating portion are spaced apart along the second direction, and / or the second open portion and the second accommodating portion are spaced apart along the second direction;

[0014] The elastic assembly further includes a first adjustment member and a second adjustment member, the first adjustment member and the second adjustment member being respectively disposed at the first opening portion and the second opening portion, the first adjustment member being configured to be movable relative to the first retaining seat to change an amount of entry into the first accommodating portion through the first opening portion, and the second adjustment member being configured to be movable relative to the second retaining seat to change an amount of entry into the second accommodating portion through the second opening portion;

[0015] wherein one end of the first elastic portion abuts against the first adjusting member, and the other end passes through the first opening portion and enters the first accommodating portion to abut against the first end of the first shaft member, and / or

[0016] One end of the second elastic portion abuts against the second adjusting member, and the other end of the second elastic portion passes through the second opening portion and enters the second accommodation portion to abut against the second end of the first shaft member.

[0017] Preferably, the first adjusting member has a first external thread, the first opening portion is correspondingly provided with a first internal thread, and the first external thread is screwed onto the first internal thread; and / or

[0018] The second adjusting member has a second external thread, the second opening portion is correspondingly provided with a second internal thread, and the second external thread is screwed onto the second internal thread.

[0019] Preferably, the first retaining seat has a third open portion communicating with the first accommodating portion, the third open portion being provided on a side surface of the first retaining seat along the first direction; and / or the second retaining seat has a fourth open portion communicating with the second accommodating portion, the fourth open portion being provided on a side surface of the second retaining seat along the first direction;

[0020] The third opening portion and / or the fourth opening portion has a width dimension, and the width dimension is greater than or equal to the outer diameter of the first shaft component.

[0021] Preferably, the number of the second roller components is two, and the second roller assembly further includes two second shaft components, the second roller components corresponding to the second shaft components one by one and configured to be rotatably sleeved on the second shaft components;

[0022] The pole piece extension mechanism further includes a third holding seat and a fourth holding seat, wherein the third holding seat and the fourth holding seat are arranged opposite to each other along the second axis and clamp two second shaft members, and the two second shaft members are spaced apart along the first direction;

[0023] In which, the third retaining seat includes a third accommodating portion, and the fourth retaining seat includes a fourth accommodating portion. The number of the third accommodating portions and the fourth accommodating portions corresponds to that of the second shaft member. At least one of the third accommodating portions has an opening for inserting the first end of the second shaft member, and / or at least one of the fourth accommodating portions has an opening for inserting the second end of the second shaft member.

[0024] Preferably, the pole piece extension mechanism further includes a platform;

[0025] The first holding seat and the second holding seat are detachably disposed on the platform, and the first holding seat and the second holding seat are both configured to be able to approach and move away from the second roller assembly along the platform;

[0026] Or the third holding seat and the fourth holding seat are detachably arranged on the platform, and the third holding seat and the fourth holding seat are both configured to be able to approach and move away from the first roller assembly along the platform.

[0027] Preferably, the platform has a through portion penetrating the platform along the first direction, and the through portion is used for passing the pole piece.

[0028] A second aspect of the present application provides a die-cutting device, which includes the pole piece extension mechanism as described above.

[0029] Preferably, there are two pole piece extension mechanisms, which are respectively located on both sides of the pole piece along the third direction, and the structures are mirror-imaged relative to a plane perpendicular to the third direction.

[0030] According to the pole piece extension mechanism provided in the present application, the elastic member capable of moving in the second direction provides an elastic force for the first roller assembly to be close to the pole piece. Thus, even if the extension conditions of the incoming pole piece are different, the first roller assembly can rely on the elastic force provided by the elastic member to continuously be close to the pole piece, thereby enabling the pole piece to be flattened under the cooperation of the first roller assembly and the second roller assembly. That is, the pole piece extension mechanism provided in the embodiment of the present application can achieve adaptive flattening of incoming pole pieces with different extension conditions.

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram showing a three-dimensional diagram of the cooperation between the extension mechanism and the laser generator provided in an embodiment of the present application is shown;

[0034] Figure 2 A schematic diagram showing a two-dimensional diagram of a partial structure of an extension mechanism provided according to an embodiment of the present application;

[0035] Figure 3 Shown Figure 2 Schematic diagram of a cross-sectional view of section AA;

[0036] Figure 4 A schematic diagram showing an exploded view of a portion of the structure of an extension mechanism provided according to an embodiment of the present application;

[0037] Figure 5 A schematic diagram showing a plan view of a first roller assembly of an extension mechanism provided according to an embodiment of the present application;

[0038] Figure 6 Shown Figure 5 Schematic diagram of the cross-section of the middle BB section;

[0039] Figure 7A schematic diagram showing another exploded view of a partial structure of an extension mechanism provided according to an embodiment of the present application;

[0040] Figure 8 A schematic diagram showing a three-dimensional diagram of the working of the die-cutting device provided according to an embodiment of the present application is shown.

[0041] Reference numerals:

[0042] 100 - extension mechanism; 110 - first roller assembly; 111 - first roller member; 112 - first shaft member; 120 - second roller assembly; 121 - second roller member; 122 - second shaft member; 130 - elastic assembly; 131 - elastic member; 132 - first elastic portion; 133 - second elastic portion; 140 - first retaining seat; 141 - first accommodating portion; 142 - first opening portion; 143 - third opening portion; 150 - second retaining seat; 151 - second accommodating portion; 152 - second opening portion; 153 - fourth opening portion; 160 - platform; 161 - through portion; 170 - third retaining seat; 171 - third accommodating portion; 180 - fourth retaining seat; 181 - fourth accommodating portion; 191 - first adjustment member; 192 - second adjustment member;

[0043] 200-laser generator; 300-pole piece; F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0045] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0048] According to the first aspect of the embodiment of the present application, a pole piece extension mechanism 100 is provided. Figures 1 to 8 The structure and working principle of the pole piece extension mechanism 100 are described in detail.

[0049] According to an embodiment of the present application, a pole piece extension mechanism 100 is provided for flattening a pole piece 300. The extension mechanism 100 includes a first roller assembly, a second roller assembly 120, and an elastic assembly 130. In an embodiment, the first roller assembly includes a first roller member 111, the first roller member 111 having a first axis and being configured to rotate about the first axis.

[0050] In this embodiment, the second roller assembly 120 includes a second roller member 121 having a second axis parallel to the first axis and configured to rotate about the second axis. The second roller members 121 and the first roller member 111 are arranged alternately along a first direction F1, with a gap between the second roller members 121 and the first roller member 111. The pole piece passes through the gap, and the first roller member abuts one side of the pole piece 300, while the second roller member abuts the other side of the pole piece 300. The first direction F1 is perpendicular to the first axis.

[0051] In an embodiment, the elastic assembly 130 includes an elastic member 131 capable of moving along the second direction F2. The elastic member 131 abuts against the first roller assembly 110 to provide elastic force to make the first roller assembly 110 close to the pole piece 300. The second direction F2 intersects the first direction F1.

[0052] In this way, according to the pole piece extension mechanism 100 provided in the embodiment of the present application, the elastic member 131 that can move in the second direction F2 provides an elastic force for the first roller assembly 110 to be close to the pole piece 300. Therefore, even if the extension conditions of the incoming pole piece 300 are different, the first roller assembly 110 can rely on the elastic force provided by the elastic member 131 to continuously be close to the pole piece 300, so that the pole piece 300 can be flattened under the cooperation of the first roller assembly 110 and the second roller assembly 120. That is, the pole piece extension mechanism 100 provided in the embodiment of the present application can achieve adaptive flattening of the incoming pole pieces 300 with different extension conditions.

[0053] like Figure 8 As shown, as an example, the first direction F1 can be a vertical direction, i.e., the pole piece 300 is fed in the vertical direction. There are two second roller members 121, which are staggered with the first roller member 111 along the first direction. A gap exists between the roller members, and the pole piece 300 passes through the gap between the two staggered second roller members 121 and the first roller member 111. Here, the vertical staggering of the first roller member 111 and the two second roller members 121 should be understood to include the following meaning: the first roller member 111 horizontally faces the gap formed by the two second roller members 121 in the vertical direction.

[0054] In an embodiment, the second direction F2 is substantially the direction in which the first roller member 111 can approach the pole piece 300. Here, the second direction F2 may be, for example, a first horizontal direction perpendicular to the first direction F1, that is, perpendicular to the vertical direction. In addition, in an embodiment, the first axis and the second axis mentioned in the above description may both extend along a vertical direction perpendicular to both the first direction F1 and the second direction F2. As an example, the first axis and the second axis may, for example, extend along a third direction F3, that is, a substantially second horizontal direction.

[0055] In an embodiment, the first roller member 111 and the second roller member 121 can rotate around their respective axes by supporting elements such as bearings or bushings, which will be described in detail in the following description.

[0056] According to the pole piece extension mechanism 100 provided in the embodiment of the present application, the first roller assembly may include a first shaft member 112, and the first roller member 111 may be configured to be rotatably sleeved on the first shaft member 112. In an embodiment, the pole piece extension mechanism 100 may further include a first retaining seat 140 and a second retaining seat 150 arranged opposite to each other along the first axis, the first retaining seat 140 may have a first accommodating portion 141 for accommodating the first end of the first shaft member 112, the second retaining seat 150 may have a second accommodating portion 151 for accommodating the second end of the first shaft member 112, the first accommodating portion 141 and the second accommodating portion 151 may both extend along the second direction F2, so that the first end and the second end of the first shaft member 112 can move along the second direction F2 in the first accommodating portion 141 and the second accommodating portion 151, respectively.

[0057] In an embodiment, the elastic members 131 may each include a first elastic portion 132 disposed in the first accommodation portion 141 and a second elastic portion 133 disposed in the second accommodation portion 151 , and the first elastic portion 132 and the second elastic portion 133 may respectively abut against the first end and the second end of the first shaft member 112 .

[0058] In the embodiment, the first retaining seat 140 and the second retaining seat 150 may have the same structure. Here, the structures of the first retaining seat 140 and the second retaining seat 150 are taken as an example for description.

[0059] Specifically, in the embodiment, the first receiving portion 141 of the first retaining seat 140 can be, for example, a hollow portion provided inside the first retaining seat 140, where the hollow portion can be defined by a through hole or a groove portion provided on the first retaining seat 140. Figure 3 As an example, the first receiving portion 141 may be a bar-shaped through hole extending along the second direction F2, and the bar-shaped through hole may be in the third direction F3 (i.e. Figure 3 The first retaining seat 140 is passed through in a direction perpendicular to the paper surface) to facilitate the installation of the first end of the first shaft member 112 in the first roller assembly 110. Similarly, the second retaining seat 150 and the second receiving portion 151 are also the same, which will not be repeated here.

[0060] However, although not shown in the figure, the first receiving portion 141 can be a strip groove opened on the side of the first retaining seat 140 facing the second retaining seat 150. Similarly, the second retaining seat 150 and the second receiving portion 151 can also be the same, which will not be repeated here.

[0061] like Figure 6As shown, the first roller member 111 may have a stepped hole extending through the first roller member 111 along the first axis. The stepped hole may include two large-diameter holes at either end of the first roller member 111. Two bearings, such as deep groove ball bearings, may be positioned in each of the large-diameter holes. The first shaft member 112 may be inserted through the stepped hole of the first roller member 111 and inserted through the two bearings. In an embodiment, the first roller assembly 110 may further include a stopper sleeve, which may be mounted on the outside of the first shaft member 112. The two stopper sleeves may abut against the outsides of the two bearings to position the bearings.

[0062] In this manner, the inner rings of both bearings are fixed to the first shaft member 112, and the outer edges of both bearings are fixed to the first roller member 111, allowing the first roller member 111 to rotate about the first axis relative to the first shaft member 112. Similarly, the second roller member 121 rotates in the same manner, that is, the second roller member 121 rotates relative to the second shaft member 122 via bearings, which will not be further described here.

[0063] In the embodiment, the first elastic portion 132 is disposed in the first accommodating portion 141, so that the first elastic portion 132 can move relative to the first accommodating portion 141 to abut against the wall portion of the first accommodating portion 141. Here, the wall portion of the first accommodating portion 141 can be the wall portion of the first accommodating portion 141 close to the second roller assembly 120, that is, Figure 3 The left wall of the middle portion. When the pole piece 300 applies an external force to the first shaft member 112 sufficient to overcome the elastic force previously applied by the first elastic portion 132, the first shaft member 112 abuts the first elastic portion 132 and moves rightward, causing the first elastic portion 132 to deform. When the external force decreases, the first elastic portion 132 continues to abut the first shaft member 112 to the left through its own elastic force. Similarly, the working principle of the second elastic portion 133 is the same and will not be further described here.

[0064] As an example, the first elastic portion 132 and the second elastic portion 133 may be coil springs, and the axial direction of the coil spring may be the second direction F2 as described above.

[0065] According to the pole piece extension mechanism 100 provided in the embodiment of the present application, the first retaining seat 140 and the second retaining seat 150 can respectively have a first open portion 142 and a second open portion 152. The first open portion 142 and the first receiving portion 141 can be spaced apart along the second direction F2, and / or the second open portion 152 and the second receiving portion 151 can be spaced apart along the second direction F2.

[0066] In an embodiment, the elastic assembly 130 may further include a first adjustment member 191 and a second adjustment member 192. The first adjustment member 191 and the second adjustment member 192 may be respectively disposed at the first opening portion 142 and the second opening portion 152. The first adjustment member 191 may be configured to be movable relative to the first retaining seat 140 to change the amount of entry into the first accommodating portion 141 through the first opening portion 142. The second adjustment member 192 may be configured to be movable relative to the second retaining seat 150 to change the amount of entry into the second accommodating portion 151 through the second opening portion 152.

[0067] In an embodiment, one end of the first elastic portion 132 can abut against the first adjusting member 191, and the other end passes through the first opening portion and enters the first accommodating portion 141 to abut against the first end of the first shaft member 112, and / or one end of the second elastic portion 133 can abut against the second adjusting member 192, and the other end passes through the second opening portion 152 and enters the second accommodating portion 151 to abut against the second end of the first shaft member 112.

[0068] Taking the first accommodating portion 141 as an example, in this embodiment, the first opening portion can be an opening on one side of the first accommodating portion 141 in the second direction F2. The first adjustment member 191 can be inserted into the first opening portion through the first opening portion, that is, the opening on the first accommodating portion 141, thereby abutting the first elastic member 131. In this way, by adjusting the distance the first adjustment member 191 is inserted into the first opening portion, the amount of compression of the first adjustment member 191 on the first elastic member 131 can be adjusted, thereby effectively adjusting the pressure applied by the first roller member 111 to the pole piece 300. Similarly, the specific form of the second opening portion 152 and the configuration of the second adjustment member 192 are the same and will not be further described here.

[0069] In an embodiment, the first opening portion can be set only on the first accommodating portion 141 and the corresponding first adjustment member 191 can be set, or the second opening portion 152 can be set only on the second accommodating portion 151 and the corresponding second adjustment member 192 can be set, or the first opening portion can be set on the first accommodating portion 141 and the corresponding first adjustment member 191 can be set, and the second opening portion 152 can be set on the second accommodating portion 151 and the corresponding second adjustment member 192 can be set.

[0070] According to the pole piece extension mechanism 100 provided in an embodiment of the present application, in an embodiment, the first adjustment member 191 and the second adjustment member 192 can be fixed at the first open portion and the second open portion 152 respectively by means of a threaded connection, and the compression of the first elastic member 131 and the second elastic member 131 can be adjusted. As an example, a first external thread can be provided only on the first adjustment member 191, and the first open portion can be correspondingly provided with a first internal thread. The first external thread can be screwed onto the first internal thread, and this screwing engagement can achieve movement of the first adjustment member 191 relative to the first accommodating portion 141, that is, the first elastic member 131.

[0071] In addition, in an embodiment, a second external thread can be provided only on the second adjusting member 192, and a second internal thread can be provided correspondingly on the second open portion 152. The second external thread is screwed onto the second internal thread, and the movement of the second adjusting member 192 relative to the second accommodating portion 151, that is, the second elastic member 131, is achieved through this screwing fit.

[0072] Furthermore, in an embodiment, it is possible to Figure 1 In the example given, a first external thread is provided on the first adjusting member 191 and a first internal thread is provided on the first opening portion, and a second external thread is provided on the second adjusting member 192 and a second internal thread is provided on the second opening portion 152 .

[0073] In this embodiment, taking the first adjustment member 191 as an example, the first adjustment member 191 is connected to the first opening portion through other means and moves relative to the first elastic member 131. For example, in this embodiment, the first adjustment member 191 may have multiple holes arranged along the second direction F2, and the portion of the first opening portion corresponding to the first retaining seat 140 may have a through-hole communicating with the first opening portion. The position of the first adjustment member 191 may be fixed by a pin inserted through the through-hole and one of the multiple holes, and the position of the first adjustment member 191 in the second direction F2 may be changed by changing the hole in the first adjustment member 191 through which the pin is inserted. Similarly, the second adjustment member 192 may also be configured in this manner, and will not be further described here.

[0074] According to the pole piece extension mechanism 100 provided in the embodiment of the present application, the first retaining seat 140 may have a third open portion 143 connected to the first accommodating portion 141, and the third open portion 143 may be provided on the side (e.g., the upper side) of the first retaining seat 140 along the first direction F1, and the third open portion 143 may have a width dimension (i.e., Figure 3The third opening portion 143 has a width greater than or equal to the outer diameter of the first shaft member 112 (as shown in the second direction F2). In the embodiment, the third opening portion 143 is substantially formed as a notch portion, and its width is greater than or equal to the outer diameter of the first shaft member 112, so that the first end of the first shaft member 112 can be placed into the first receiving portion 141 through the notch portion, thereby facilitating the installation of the first shaft member 112.

[0075] Alternatively, in an embodiment, according to the pole piece extension mechanism 100 provided in an embodiment of the present application, the second retaining seat 150 may have a fourth open portion 153 connected to the second accommodating portion 151 in the same manner as the first retaining seat 140, and the fourth open portion 153 may be provided on the side (e.g., the upper side) of the second retaining seat 150 along the first direction F1. In an embodiment, the fourth open portion 153 may have a width dimension, and the width dimension is greater than or equal to the outer diameter of the first shaft member 112. In an embodiment, the fourth open portion 153 is substantially formed as a notch portion, and the width dimension thereof is greater than or equal to the outer diameter of the first shaft member 112 so that the second end of the first shaft member 112 can be placed into the second accommodating portion 151 through the notch portion, thereby facilitating the installation of the first shaft member 112.

[0076] In addition, in an embodiment, the first retaining seat 140 and the second retaining seat 150 can both be arranged as above, so that the first shaft component 112 can be directly placed into the first accommodating portion 141 and the second accommodating portion 151 from above both the first retaining seat 140 and the second retaining seat 150, thereby improving the installation efficiency of the first shaft component 112.

[0077] According to the pole piece extension mechanism 100 provided in the embodiment of the present application, the number of second roller members can be two, and the second roller assembly 120 can further include two second shaft members 122. The second roller members 121 can correspond to the second shaft members 122 one by one and be configured to be rotatably sleeved on the second shaft members 122. In the embodiment, the relative rotation between each second roller member 121 and the corresponding second shaft member 122 can also be achieved through a bearing, that is, the relative rotation method is the same as the relative rotation method of the first roller member 111 and the first shaft member 112 mentioned in the above description, and will not be repeated here.

[0078] The pole piece extension mechanism 100 may further include a third retaining seat 170 and a fourth retaining seat 180. The third retaining seat 170 and the fourth retaining seat 180 may be disposed opposite each other along the second axis and clamp the two second shaft members 122. The two second shaft members 122 may be spaced apart along the first direction F1. In other words, the third retaining seat 170 and the second and fourth retaining seats 180 may be disposed opposite each other in the third direction F3 and clamp the two second shaft members 122, so that the two shaft members are spaced apart from each other in the vertical direction.

[0079] In an embodiment, the third retaining seat 170 may include a third accommodating portion 171, and the fourth retaining seat 180 may include a fourth accommodating portion 181. The number of third accommodating portions 171 and fourth accommodating portions 181 may both correspond to the number of second shaft members 122 (that is, the number of third accommodating portions 171 and fourth accommodating portions 181 corresponds to the number of second shaft members 122, and each second shaft member 122 has a correspondingly configured third accommodating portion 171 and a fourth accommodating portion 181, and there may be two third accommodating portions 171 and two fourth accommodating portions 181).

[0080] In an embodiment, only the third accommodating portion 171 may be configured as follows: at least one third accommodating portion 171 has an opening for receiving the first end of the second shaft member 122. As an example, the opening may be open toward the side where the first roller assembly 110 is located, so that the first end of the second shaft member 122 can be received in the third accommodating portion 171 along the second direction F2. Here, the third accommodating portion 171 may be formed as a substantially concave portion.

[0081] In this embodiment, both third receiving portions 171 can be recessed as described above. However, it is also possible that only one third receiving portion 171 is formed as a recessed portion, while the other third receiving portion 171 is formed as a through-hole extending along the third direction F3. Thus, the first end of one second shaft member 122 can be inserted into the third receiving portion 171, which serves as a through-hole, and the first end of the other second shaft member 122 can be inserted into the third receiving portion 171, which serves as a recessed portion, along the second direction F2. Based on this, one fourth receiving portion 181 can be, for example, the aforementioned recessed portion, and together with the aforementioned recessed third receiving portion 171, hold one second shaft member 122. The other fourth receiving portion 181 can be, for example, the aforementioned through-hole, and together with the third receiving portion 171, which serves as a through-hole, hold the other second shaft member 122.

[0082] Alternatively, in an embodiment, only the fourth accommodating portion 181 may be configured as follows: at least one fourth accommodating portion 181 may have an opening for receiving the second end of the second shaft member 122. For example, the opening may be open toward the side where the first roller assembly 110 is located, so that the second end of the second shaft member 122 can be received in the fourth accommodating portion 181 along the second direction F2. Here, the fourth accommodating portion 181 may be formed as a substantially recessed portion.

[0083] In the embodiment, both fourth receiving portions 181 may be formed as the above-mentioned recesses. However, it is also possible that only one fourth receiving portion 181 is formed as the above-mentioned recess, while the other fourth receiving portion 181 is formed as a through hole extending along the third direction F3. Thus, the second end of one second shaft member 122 can be inserted into the fourth receiving portion 181 serving as the through hole, and the first end of the other second shaft member 122 can be placed into the fourth receiving portion 181 serving as the recess along the second direction F2.

[0084] In addition, in the embodiment, the arrangement of the third accommodation portion 171 and the arrangement of the fourth accommodation portion 181 mentioned in the above description may also be adopted simultaneously.

[0085] It should also be noted that the third accommodating portion 171 and the fourth accommodating portion 181, which serve as the above recess, can also have an opening opened at the top of the corresponding retaining seat and connected to the recess. The opening can be used to screw in the screw, so that the second shaft member 122 is fixed to the recess by abutting the end of the second shaft member 122 through the screw.

[0086] According to the pole piece extension mechanism 100 provided in the embodiment of the present application, the pole piece extension mechanism 100 may further include a platform 160. The first retaining seat 140 and the second retaining seat 150 may be detachably disposed on the platform 160, and the first retaining seat 140 and the second retaining seat 150 may both be configured to be able to approach and move away from the second roller assembly 120 along the platform 160.

[0087] Here, as an example, taking the first retaining seat 140 as an example, the first retaining seat 140 may have a strip portion extending along the second direction F2, and a waist-shaped hole may be formed on the strip portion extending along the second direction F2. The strip portion may be detachably mounted to the platform 160 by passing a bolt through the waist-shaped hole. The position of the first retaining seat 140 in the second direction F2 may be adjusted by loosening the bolt, thereby adjusting the distance between the first retaining seat 140 and the second roller assembly 120. Similarly, the second retaining seat 150 may also be similar, and no further details will be given here.

[0088] In an embodiment, the third retaining seat 170 and the fourth retaining seat 180 may also be detachably disposed on the platform 160, and the third retaining seat 170 and the fourth retaining seat 180 may both be configured to be able to approach and move away from the first roller assembly 110 along the platform 160. Here, the connection method between the third retaining seat 170 and the fourth retaining seat 180 and the platform 160 may be the same as the connection method between the first retaining seat 140 and the second retaining seat 150 and the platform 160 mentioned above, and will not be repeated here.

[0089] According to the pole piece extension mechanism 100 provided in the embodiment of the present application, the platform 160 may have a through portion 161 that passes through the platform 160 along the first direction F1. The through portion 161 can be used to pass through the pole piece 300. In an embodiment, according to the pole piece extension mechanism 100 provided in the embodiment of the present application, the through portion 161 can be a notch extending from the edge of the platform 160 toward the interior of the platform 160, and the notch can allow the pole piece 300 to pass therethrough. In addition, the pole piece extension mechanism 100 also includes a laser generator 200 that is spaced apart from the platform 160 and located on one side of the platform 160 in the second direction F2.

[0090] According to a second aspect of the embodiment of the present application, a die-cutting device is provided, the die-cutting device comprising the pole piece extension mechanism 100 as described above, such as Figure 8 As shown, the number of the pole piece extension mechanisms 100 can be two, and the two pole piece extension mechanisms 100 can be respectively located on both sides of the pole piece 300 along the third direction F3, and the structure is mirrored relative to the plane perpendicular to the third direction F3, that is, the two through parts 161 of the two pole piece extension mechanisms 100 are open relative to each other.

[0091] The above are only preferred embodiments of the present application and do not limit the scope of protection of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings under the innovative concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A pole piece extension mechanism (100) for flattening a pole piece, characterized in that: The extension mechanism (100) comprises: a first roller assembly (110), the first roller assembly (110) comprising a first roller member (111), the first roller member (111) having a first axis, the first roller member (111) being configured to rotate about the first axis; a second roller assembly (120), the second roller assembly (120) comprising a second roller member (121), the second roller member (121) having a second axis parallel to the first axis, the second roller member (121) being configured to be rotatable about the second axis; The second roller member (121) and the first roller member (111) are staggered along a first direction (F1), a gap exists between the first roller member (111) and the second roller member (121), the gap is used for the pole piece to pass through, and the first roller member (111) is used to abut one side of the pole piece, and the second roller member (121) is used to abut the other side of the pole piece; the first direction (F1) is perpendicular to the first axis; An elastic component (130), the elastic component (130) comprising an elastic member (131) capable of moving along a second direction (F2), the elastic member (131) abutting against the first roller component (110) to provide elastic force to make the first roller component (110) close to the pole piece (300), the second direction (F2) intersecting the first direction (F1).

2. The pole piece extension mechanism (100) according to claim 1, characterized in that: The first roller assembly (110) includes a first shaft member (112), and the first roller member (111) is configured to be rotatably sleeved on the first shaft member (112); The pole piece extension mechanism (100) further comprises a first retaining seat (140) and a second retaining seat (150) arranged opposite to each other along the first axis, the first retaining seat (140) having a first accommodating portion (141) for accommodating the first end of the first shaft member (112), and the second retaining seat (150) having a second accommodating portion (151) for accommodating the second end of the first shaft member (112), and the first accommodating portion (141) and the second accommodating portion (151) both extend along the second direction (F2), so that the first end and the second end of the first shaft member (112) can move along the second direction (F2) in the first accommodating portion (141) and the second accommodating portion (151), respectively; The elastic member (131) includes a first elastic portion (132) arranged in the first accommodating portion (141) and a second elastic portion (133) arranged in the second accommodating portion (151), and the first elastic portion (132) and the second elastic portion (133) respectively abut against the first end and the second end of the first shaft member (112).

3. The pole piece extension mechanism (100) according to claim 2, characterized in that: The first retaining seat (140) and the second retaining seat (150) respectively have a first open portion (142) and a second open portion (152); the first open portion (142) and the first accommodating portion (141) are spaced apart along the second direction (F2), and / or the second open portion (152) and the second accommodating portion (151) are spaced apart along the second direction (F2); The elastic component (130) further includes a first adjusting member (191) and a second adjusting member (192), wherein the first adjusting member (191) and the second adjusting member (192) are respectively arranged at the first opening portion (142) and the second opening portion (152), wherein the first adjusting member (191) is configured to be movable relative to the first retaining seat (140) so as to change the amount of entry into the first accommodating portion (141) through the first opening portion (142), and the second adjusting member (192) is configured to be movable relative to the second retaining seat (150) so as to change the amount of entry into the second accommodating portion (151) through the second opening portion (152); wherein one end of the first elastic portion (132) abuts against the first adjusting member (191), and the other end passes through the first opening portion (142) and enters the first accommodating portion (141) to abut against the first end of the first shaft member (112), and / or One end of the second elastic portion (133) abuts against the second adjusting member (192), and the other end passes through the second opening portion (152) and enters the second accommodating portion (151) to abut against the second end of the first shaft member (112).

4. The pole piece extension mechanism (100) according to claim 3, characterized in that: The first adjusting member (191) has a first external thread, the first opening portion (142) is correspondingly provided with a first internal thread, and the first external thread is screwed onto the first internal thread; and / or The second adjusting member (192) has a second external thread, and the second opening portion (152) is correspondingly provided with a second internal thread, and the second external thread is screwed onto the second internal thread.

5. The pole piece extension mechanism (100) according to claim 2, characterized in that: The first retaining seat (140) has a third open portion (143) communicating with the first accommodating portion (141), and the third open portion (143) is arranged on a side surface of the first retaining seat along the first direction (F1); and / or the second retaining seat (150) has a fourth open portion (153) communicating with the second accommodating portion (151), and the fourth open portion (153) is arranged on a side surface of the second retaining seat (150) along the first direction (F1); The third opening portion (143) and / or the fourth opening portion (153) have a width dimension, and the width dimension is greater than or equal to the outer diameter of the first shaft member (112).

6. The pole piece extension mechanism (100) according to claim 5, characterized in that: There are two second roller components (121), and the second roller assembly (120) further includes two second shaft components (122). The second roller components (121) correspond to the second shaft components (122) in a one-to-one manner and are configured to be rotatably sleeved on the second shaft components (122). The pole piece extension mechanism (100) further comprises a third retaining seat (170) and a fourth retaining seat (180), wherein the third retaining seat (170) and the fourth retaining seat (180) are arranged opposite to each other along the second axis and clamp two second shaft components (122), and the two second shaft components (122) are arranged at intervals along the first direction (F1); Wherein, the third retaining seat (170) includes a third accommodating portion (171), and the fourth retaining seat (180) includes a fourth accommodating portion (181). The number of the third accommodating portions (171) and the fourth accommodating portions (181) corresponds to the number of the second shaft member (122). At least one of the third accommodating portions (171) has an opening for inserting the first end of the second shaft member (122), and / or at least one of the fourth accommodating portions (181) has an opening for inserting the second end of the second shaft member (122).

7. The pole piece extension mechanism (100) according to claim 6, characterized in that: The pole piece extension mechanism (100) further includes a platform (160); The first retaining seat (140) and the second retaining seat (150) are detachably disposed on the platform (160), and the first retaining seat (140) and the second retaining seat (150) are both configured to be able to approach and move away from the second roller assembly (120) along the platform (160); Or the third retaining seat (170) and the fourth retaining seat (180) are detachably arranged on the platform (160), and the third retaining seat (170) and the fourth retaining seat (180) are both configured to be able to approach and move away from the first roller assembly (110) along the platform (160).

8. The pole piece extension mechanism (100) according to claim 7, characterized in that: The platform (160) has a through portion (161) that penetrates the platform (160) along a first direction (F1), and the through portion (161) is used to pass through the pole piece (300).

9. A die-cutting device, characterized in that: The die-cutting device comprises a pole piece extending mechanism (100) according to any one of claims 1 to 8.

10. The die-cutting device according to claim 9, characterized in that: There are two pole piece extension mechanisms (100), which are respectively located on both sides of the pole piece along a third direction (F3), and the structures are arranged in a mirror image relative to a plane perpendicular to the third direction.

Images