Tab embossing roller and tab embossing device

Abstract

The utility model discloses a tab embossing roller and a tab embossing device, the tab embossing roller comprises a roller body, a plurality of printing blocks and an adjusting assembly, a cavity is arranged in the roller body, and a plurality of openings communicated with the cavity are arranged on the outer surface of the roller body; the multiple printing blocks are distributed in the cavity in the circumferential direction and can move in the radial direction of the roller body, a printing protrusion is arranged at the end, away from the center shaft of the roller body, of each printing block, and the printing protrusions can penetrate through an opening along with movement of the printing blocks and stretch out and draw back. The adjusting assembly is arranged on the roller body and connected with the multiple printing blocks, and the adjusting assembly is used for driving the multiple printing blocks to move so as to adjust the length of the portions, extending out of the outer surface of the roller body, of the printing protrusions. According to the electrode lug embossing roller, the printing protrusions can move along with the printing blocks, the adjusting assembly can drive the multiple printing blocks to move, when the embossing requirements of different embossing depths are met, the length of the portions, extending out of the outer surface of the roller body, of the printing protrusions can be adjusted through the adjusting assembly, and the embossing roller with the printing protrusions of different embossing depths does not need to be replaced; time is saved; and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, and particularly relates to an ear embossing roller and an ear embossing device. Background Art

[0002] The positive and negative ear tabs of a lithium battery are usually formed by cutting the electrode sheet through methods such as laser die-cutting. Moreover, during the manufacturing process of the ear tabs, an embossing roller is used to emboss the ear tabs to enhance the strength and folding resistance of the ear tabs, etc.

[0003] In the related art, the ear embossing roller is used to emboss a single embossing depth, such as 1 mm. To meet the embossing requirements of different embossing depths, usually multiple ear embossing rollers capable of embossing different embossing depths are configured, and during the embossing process, according to the actual required embossing depth of the ear tabs, the ear embossing roller capable of embossing the corresponding embossing depth is replaced, which is time-consuming, laborious and costly. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose an ear embossing roller, aiming to solve the problem that when facing the embossing requirements of different embossing depths, it is necessary to replace the ear embossing roller capable of embossing the corresponding embossing depth, resulting in time-consuming, laborious and high cost.

[0005] To achieve the above purpose, the utility model proposes an ear embossing roller, which comprises:

[0006] A roller body, a chamber is formed inside the roller body, and a plurality of openings communicating with the chamber are arranged on the outer surface of the roller body;

[0007] A plurality of printing blocks, the plurality of printing blocks are circumferentially distributed in the chamber and can move along the radial direction of the roller body. One end of each printing block away from the central axis of the roller body is provided with a printing protrusion, and the printing protrusion can move with the movement of the printing block to penetrate through one of the openings and expand and contract;

[0008] An adjusting component, the adjusting component is arranged on the roller body and connected with the plurality of printing blocks, and the adjusting component is used to drive the plurality of printing blocks to move so as to adjust the length of the printing protrusion extending out from the outer surface of the roller body.

[0009] In some embodiments, the adjusting component comprises:

[0010] An extrusion piece, an extrusion end acting on the plurality of printing blocks is arranged on the extrusion piece, and the extrusion piece moves along the axial direction of the roller body to extrude the plurality of printing blocks to move away from the central axis of the roller body;

[0011] A plurality of reset members, the plurality of reset members are arranged in the chamber, and each reset member correspondingly acts on one of the printing blocks to provide a force for the printing block to move towards the central axis of the roller body.

[0012] In some embodiments, the adjusting assembly further includes:

[0013] An adjusting member, the adjusting member passes through the chamber and acts on the pressing member, and the adjusting member is used to drive the pressing member to move to press the plurality of printing blocks.

[0014] In some embodiments, there are two pressing members and two adjusting members. The two pressing members are arranged oppositely in the vertical direction, and each adjusting member correspondingly acts on one of the pressing members.

[0015] In some embodiments, the adjusting member is a micrometer, and the adjusting end of the micrometer acts on the pressing member; and / or,

[0016] The reset member is a spring, one end of the spring is connected to the roller body, and the other end is connected to the printing block.

[0017] In some embodiments, one end of the printing block close to the central axis of the roller body is provided with a pressing surface for the pressing end of the pressing member to press;

[0018] In the axial direction of the roller body, the pressing surface is an inclined surface or an arc surface.

[0019] In some embodiments, the adjusting assembly further includes:

[0020] A limiting member, the limiting member passes through the chamber and is fixedly connected to the pressing member, and the limiting member can slide along the axial direction of the roller body with the pressing member.

[0021] In some embodiments, a limiting seat is arranged at one end of the limiting member away from the pressing member, and an elastic member is arranged between the limiting seat and the roller body. The elastic member provides an elastic force to the limiting member through the limiting seat.

[0022] In some embodiments, the adjustment range of the protruding length of the printing protrusion is 0 mm - 2 mm.

[0023] The present utility model also provides an ear pressing and embossing device, which includes a driving assembly and the aforementioned ear pressing and embossing roller. The driving assembly is connected to the ear pressing and embossing roller and is used to drive the ear pressing and embossing roller to rotate.

[0024] The tab embossing roller provided by the present utility model has a chamber on its roller body, and the roller body is provided with a plurality of openings communicating with the chamber. A plurality of printing blocks are arranged in the chamber. One end of the printing block is provided with a printing protrusion, and the printing protrusion can pass through and expand and contract from an opening as the printing block moves. The adjusting assembly is connected to the plurality of printing blocks and can drive the plurality of printing blocks to move. When facing the embossing requirements of different embossing depths, the length of the printing protrusion extending from the outer surface of the roller body can be adjusted by adjusting the adjusting assembly, without the need to replace the embossing roller with printing protrusions of different embossing depths, saving time and reducing costs. Brief Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the overall structure of the tab embossing roller in an embodiment of the present utility model;

[0026] Explanation of the reference numerals in the drawings:

[0027] Label Name Label Name 110 Roll body 111 Chamber 120 Printing block 121 Printing protrusion 130 Adjustment component 131 Extrusion part 133 Adjusting part 134 Limit part 135 Limit seat

[0028] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiment

[0029] Next, the solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0030] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0032] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] An embodiment of the present utility model provides an ear embossing roller. Referring to Figure 1 , the ear embossing roller includes:

[0034] A roller body 110, a chamber 111 is formed inside the roller body 110, and a plurality of openings communicating with the chamber 111 are provided on the outer surface of the roller body;

[0035] A plurality of embossing blocks 120, the plurality of embossing blocks 120 are circumferentially distributed in the chamber 111 and can move radially along the roller body 110. One end of each embossing block 120 away from the central axis of the roller body 110 is provided with an embossing protrusion 121, and the embossing protrusion 121 can pass through an opening and expand and contract as the embossing block moves;

[0036] An adjusting assembly 130, the adjusting assembly 130 is arranged on the roller body 110 and connected to the plurality of embossing blocks 120. The adjusting assembly 130 is used to drive the plurality of embossing blocks 120 to move so as to adjust the length of the embossing protrusion 121 extending from the outer surface of the roller body 110.

[0037] In this embodiment, the ear embossing roller can be applied to a battery cell production device. The battery cell production device includes a machine table and a driving mechanism. Roller shafts are respectively provided at opposite ends of the roller body 110 of the ear embossing roller, and the roller body 110 is rotatably installed on the machine table through the roller shafts. The driving mechanism is connected to the roller shaft of the roller body 110. When the device operates, the driving mechanism runs to drive the roller body 110 to rotate so that the ear embossing roller performs an embossing operation on the ears of the battery cell. Among them, the driving mechanism can adopt a driving motor, etc.

[0038] Specifically, a chamber 111 is formed inside the roller body 110 of the tab embossing roller. A plurality of openings communicating with the chamber 111 are provided on the outer surface of the roller body 110. The plurality of openings are evenly distributed circumferentially on the outer surface of the roller body 110. A plurality of printing blocks 120 are arranged in the chamber 111 and can move radially along the roller body 110. A printing protrusion 121 is provided at one end of each printing block 120 away from the central axis of the roller body 110, and the printing protrusion 121 can pass through and expand and contract from an opening as the printing block 120 moves. Optionally, the number of openings corresponds to the number of printing blocks 120. When the printing block 120 moves along the corresponding opening direction, the printing protrusion 121 provided on the same printing block 120 extends out of the outer surface of the roller body 110 from one opening; or, the number of openings corresponds to the number of printing protrusions 121 provided on the printing block 120. When the printing block 120 moves along the corresponding opening direction, the printing protrusions 121 provided on the same printing block 120 extend out of the outer surface of the roller body 110 from different openings. When the printing protrusion 121 extends out of the outer surface of the roller body 110 through the opening to emboss the tab, the longer the length that the printing protrusion 121 extends out, the deeper the embossing depth on the corresponding tab will be, and the more prominent the reinforcing ribs formed on the tab surface will be, which increases the internal stress of the tab and thus improves the overall bending strength of the tab.

[0039] An adjusting assembly 130 is arranged on the roller body 110 and connected to the plurality of printing blocks 120. The adjusting assembly 130 is used to drive the plurality of printing blocks 120 to move so as to adjust the length that the printing protrusion 121 extends out of the outer surface of the roller body 110. Optionally, one adjusting assembly 130 is provided, and this adjusting assembly 130 is connected to the plurality of printing blocks 120. At this time, one adjusting assembly 130 can drive the plurality of printing blocks 120 to move simultaneously; or, a plurality of adjusting assemblies 130 are provided, and each adjusting assembly 130 is correspondingly connected to one printing block 120, such as a cylinder adjusting assembly. At this time, the number of adjusting assemblies 130 corresponds to the number of printing blocks 120, and one adjusting assembly 130 can only drive one printing block 120 connected thereto to move.

[0040] For the tab embossing roller provided by the present utility model, a chamber 111 is provided on the roller body 110, and the roller body 110 is provided with a plurality of openings communicating with the chamber 111. A plurality of printing blocks 120 are arranged in the chamber 111. A printing protrusion 121 is provided at one end of the printing block 120, and the printing protrusion 121 can pass through and expand and contract from an opening as the printing block 120 moves. The adjusting assembly 130 is connected to the plurality of printing blocks 120 and can drive the plurality of printing blocks 120 to move. When facing the embossing requirements with different embossing depths, the length that the printing protrusion 121 extends out of the outer surface of the roller can be adjusted by adjusting the adjusting assembly 130, without replacing the tab embossing roller with printing protrusions 121 of different embossing depths, saving time and reducing costs.

[0041] In some embodiments, the adjusting assembly 130 includes: an extrusion member 131 provided with an extrusion end for acting on a plurality of printing blocks 120. The extrusion member 131 moves along the axial direction of the roller body 110 to extrude the plurality of printing blocks 120 to move away from the central axis of the roller body 110;

[0042] A plurality of reset members are arranged in the chamber 111, and each reset member correspondingly acts on a printing block 120 to provide a force for the printing block 120 to move towards the central axis of the roller body 110.

[0043] Wherein, the extrusion end of the extrusion member 131 can be spherical. The surface of the spherical extrusion end is smooth without edges and corners, and there will be no jamming during axial sliding. When the extrusion member 131 moves towards the center of the roller body 110 in the axial direction of the roller body 110, the extrusion end of the extrusion member 131 correspondingly extrudes the plurality of printing blocks 120 to move away from the central axis of the roller body 110. At this time, the reset member is compressed and stores elastic potential energy after being extruded by the printing block 120; when the extrusion member 131 moves away from the center of the roller body 110 in the axial direction of the roller body 110, the elastic potential energy stored by the reset member will be converted into kinetic energy to push the printing block 120 towards the central axis of the roller body 110. Optionally, the number of reset members acting on the printing block 120 can be set to one or multiple, which is not limited herein.

[0044] In some embodiments, the adjusting assembly further includes: an adjusting member 133 passing through the chamber 111 and acting on the extrusion member 131. The adjusting member 133 is used to drive the extrusion member 131 to move to extrude the plurality of printing blocks 120.

[0045] Wherein, the adjusting member 133 is fixedly installed on the roller body 110, and one end acting on the extrusion member 131 is telescopic. When it is necessary to increase the embossing depth, the adjusting member 133 can be controlled to extend to act on the extrusion member 131, and then the extrusion member 131 is pushed to move axially. The extrusion end of the extrusion member 131 extrudes the plurality of printing blocks 120 to move away from the central axis of the roller body 110, so as to increase the length of the printing protrusion 121 protruding from the outer surface of the roller body 110; when it is necessary to reduce the embossing depth, the adjusting member 133 can be controlled to retract. At the same time, the plurality of printing blocks 120 move towards the central axis of the roller body 110 under the action of the reset members described above for resetting, so as to shorten the length of the printing protrusion 121 protruding from the outer surface of the roller body 110.

[0046] In some embodiments, both the extrusion member 131 and the adjusting member 133 are provided with two. The two extrusion members 131 are arranged oppositely along the axial direction, and each adjusting member 133 correspondingly acts on one extrusion member 131.

[0047] Among them, two pressing members 131 are arranged oppositely along the axial direction of the roller body 110, and two adjusting members 133 correspond to the two pressing members 131 one by one. When the ear embossing roller performs the embossing work, a plurality of printing blocks 120 are subjected to an external force. At this time, the two pressing members 131 arranged axially oppositely can provide the same supporting force at both ends of the printing blocks 120, ensuring that the plurality of printing blocks 120 will not tilt and affect the embossing quality of the ear.

[0048] In some embodiments, the adjusting member 133 is a micrometer, and the adjusting end of the micrometer acts on the pressing member 131. As can be seen from the adjusting member 133 described above, one end of the adjusting member 133 acting on the pressing member 131 is telescopic, that is, the adjusting end is telescopic. The adjusting accuracy of the micrometer is very high, usually reaching the order of a few micrometers or even smaller, ensuring the accuracy of the telescopic length of the adjusting end. In addition, the adjusting member 133 can also adopt other electric adjusting structures such as lead screws and electric push rods.

[0049] And / or, in some embodiments, the reset member is a spring, one end of the spring is connected to the roller body 110, and the other end is connected to the printing block 120.

[0050] Among them, optionally, the spring is arranged between the inner wall of the roller body 110 and the outer wall of the printing block 120. The inner wall of the roller body 110 is provided with a first protrusion, and the outer wall of the printing block 120 is provided with a second protrusion opposite to the first protrusion. One end of the spring is sleeved on the first protrusion, and the other end of the spring is sleeved on the second protrusion. The first protrusion and the second protrusion firmly clamp the spring between the inner wall of the roller body 110 and the outer wall of the printing block 120, so that the spring will not fall off easily even if it is not squeezed by the printing block 120.

[0051] In some embodiments, one end of the printing block 120 close to the central axis of the roller body 110 is provided with a pressing surface for the pressing end of the pressing member 131 to press; along the axial direction of the roller body 110, the pressing surface is an inclined surface or an arc surface.

[0052] Among them, when the pressing surface is an inclined surface or an arc surface, the inclination direction of its end is inclined toward the side away from the central axis of the roller body 110, and the interval width of the pressing surfaces of the plurality of printing blocks 120 gradually decreases from the end to the center, so that when the pressing member 131 moves axially downward, the printing block 120 is pressed to move away from the central axis of the roller body 110, and further the length of the printing protrusion 121 extending out of the outer surface of the roller body 110 gradually increases.

[0053] In some embodiments, the adjusting assembly 130 further includes: a limiting member 134, the limiting member 134 penetrates through the chamber 111 and is fixedly connected to the pressing member 131, and the limiting member 134 can slide axially along the roller body 110 with the pressing member 131.

[0054] Among them, the roller body 110 is provided with a first through hole penetrating along the axial direction of the roller body 110. The extrusion member 131 is provided with a second through hole opposite to the first through hole. The limiting member 134 is fixedly connected to the extrusion member 131 through the second through hole, and the limiting member 134 is slidably engaged with the roller body 110 through the first through hole. When the extrusion member 131 is squeezed by the printing block 120 or the extrusion member 131 is acted on by the adjusting member 133, the limiting member 134 fixedly connected to the extrusion member 131 can only slide along the axial direction of the roller body 110 under the limitation of the first through hole. The extrusion member 131 fixedly connected to the limiting member 134 can also only slide along the axial direction of the roller body 110 and will not swing radially. Thus, the moving distances of different printing blocks 120 along the radial direction of the roller body are equal, ensuring that the lengths of the printing protrusions 121 provided on different printing blocks 120 extending out of the surface of the roller body are consistent. When the tab embossing roller embosses the tab, the embossing depths on the same tab are equal, ensuring the stability of the overall structure of the tab.

[0055] In some embodiments, a limiting seat 135 is provided at one end of the limiting member 134 away from the extrusion member 131. An elastic member is provided between the limiting seat 135 and the roller body 110. The elastic member provides an elastic acting force to the limiting member 134 through the limiting seat 135.

[0056] Among them, the elastic member is a component that can provide an elastic acting force and can be a compression spring. The compression spring is arranged between the limiting seat 135 and the roller body 110 and sleeved on the limiting member 134. When the adjusting end of the adjusting member 133 extends, the adjusting member 133 acts on the extrusion member 131, and the extrusion member 131 drives the limiting member 134 to move along the direction in which the adjusting end extends. The limiting seat 135 squeezes the spring to compress the spring. When the adjusting end of the adjusting member 133 shortens, the adjusting member 133 does not act on the extrusion member 131, and the compressed spring will expand, causing the limiting member 134 to move along the direction in which the adjusting end shortens, thereby driving the extrusion member 131 to move along the direction in which the adjusting end shortens.

[0057] In some embodiments, the adjustment range of the extending length of the printing protrusion 121 is 0 mm - 2 mm. That is, the adjustment range of the extending length of the printing protrusion 121 can be set within the range of 0 mm - 2 mm. For example, the extending length of the printing protrusion 121 can be 0 mm, 1 mm, or 2 mm. Among them, the extending length of the printing protrusion 121 can be set with reference to the thickness of the tab. For example, when the thickness specification of the tab is relatively thin, the extending length of the printing protrusion 121 can be set to 0 mm; when the thickness specification of the tab is moderate, the extending length of the printing protrusion 121 can be set to 1 mm; when the thickness specification of the tab is relatively thick, the extending length of the printing protrusion 121 can be set to 2 mm. The above data are only exemplary and not restrictive.

[0058] An embodiment of the present utility model further provides an ear tab embossing device, which includes a driving assembly and the ear tab embossing roller described above. The driving assembly is connected to the ear tab embossing roller and is used to drive the ear tab embossing roller to rotate.

[0059] For the specific structure of the ear tab embossing roller, refer to the above embodiments. Since this ear tab embossing device adopts all the technical solutions of the above embodiments, it at least has all the technical effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0060] The above are only partial or preferred embodiments of the present utility model. Neither the text nor the drawings can limit the scope of protection of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the overall concept of the present utility model, or any direct / indirect application in other related technical fields is included in the scope of protection of the present utility model.

Claims

1. An ear pressing roller, characterized in that, Comprising: A roller body, a chamber is formed inside the roller body, and a plurality of openings communicating with the chamber are provided on the outer surface of the roller body; A plurality of printing blocks, the plurality of printing blocks are circumferentially distributed in the chamber and can move radially along the roller body, and a printing protrusion is provided at one end of each printing block away from the central axis of the roller body, and the printing protrusion can pass through one of the openings and expand and contract as the printing block moves; An adjusting assembly, the adjusting assembly is arranged on the roller body and connected to the plurality of printing blocks, and the adjusting assembly is used to drive the plurality of printing blocks to move so as to adjust the length of the printing protrusion protruding from the outer surface of the roller body.

2. The tab embossing roller according to claim 1, wherein The adjusting assembly includes: An extrusion member, an extrusion end acting on the plurality of printing blocks is provided on the extrusion member, and the extrusion member moves axially along the roller body to extrude the plurality of printing blocks to move away from the central axis of the roller body; A plurality of reset members, the plurality of reset members are arranged in the chamber, and each reset member correspondingly acts on one printing block to provide a force for the printing block to move towards the central axis of the roller body.

3. The tab embossing roller according to claim 2, wherein The adjusting assembly further includes: An adjusting member, the adjusting member passes through the chamber and acts on the extrusion member, and the adjusting member is used to drive the extrusion member to move to extrude the plurality of printing blocks.

4. The tab embossing roller according to claim 3, wherein There are two extrusion members and two adjusting members respectively. The two extrusion members are oppositely arranged in the vertical direction, and each adjusting member correspondingly acts on one extrusion member.

5. The tab embossing roller according to claim 3, wherein, The adjusting member is a micrometer, and the adjusting end of the micrometer acts on the extrusion member; and / or, The reset member is a spring, one end of the spring is connected to the roller body, and the other end is connected to the printing block.

6. The tab embossing roller according to any one of claims 2 to 5, characterized in that, An extrusion surface for the extrusion end of the extrusion member to extrude is provided at one end of the printing block close to the central axis of the roller body; Axially along the roller body, the extrusion surface is an inclined surface or an arc surface.

7. The tab embossing roller according to any one of claims 2 to 5, characterized in that The adjusting assembly further includes: A limiting member, the limiting member passes through the chamber and is fixedly connected to the extrusion member, and the limiting member can slide axially along the roller body with the extrusion member.

8. The tab embossing roller according to claim 7, characterized in that, A limiting seat is provided at one end of the limiting member away from the extrusion member, and an elastic member is provided between the limiting seat and the roller body. The elastic member provides an elastic force to the limiting member through the limiting seat.

9. The tab embossing roller according to claim 1, wherein The adjustment range of the protruding length of the printing protrusion is 0mm - 2mm.

10. An ear tab embossing device, characterized in that, Including a driving assembly and the tab embossing roller according to any one of claims 1 to 9, the driving assembly is connected to the tab embossing roller for driving the tab embossing roller to rotate.

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