Cutter device and pole piece cutting device

Abstract

The application relates to the technical field of battery production and manufacturing equipment, in particular to a cutter device and a pole piece cutting device. The cutter device comprises a base and a cutter rotating seat, the base and the cutter rotating seat are respectively in ring type structures, and the cutter rotating seat is sleeved on the outer periphery of the base. The cutter rotating seat is provided with a through hole penetrating in the radial direction, the through hole is provided with a pressing piece, an elastic piece and a locking structure, the pressing piece is provided with a pressing end face facing the base, the elastic piece is provided with a proximal end close to the base and a distal end away from the base, the proximal end is connected to the cutter rotating seat, the distal end is connected to the pressing piece, and the locking structure is configured to adjust the conversion of the pressing piece between a locking position and a release position. When the pressing piece is in the locking position, the pressing end face is in abutment with the external thread. Through the above design, the application can avoid overpressure of the pressing piece on the base in the locking position, thereby avoiding the problem of falling debris, and is beneficial to optimizing the fastening effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production and manufacturing equipment, and in particular to a cutting knife device and a pole piece cutting device. BACKGROUND

[0002] In the existing production and manufacturing process of batteries, the slitting process of battery pole pieces is achieved by using a pole piece cutting knife device, which is specifically used to cut pole piece raw materials into product specifications. The cutting knife device includes a base and a knife rotating seat, and the knife rotating seat is rotatably sleeved on the outer periphery of the base. Among them, the existing cutting knife device adopts the design of setting a screw hole in the knife rotating seat and screwing a locking screw in the screw hole. By tightening the locking screw, the end of the locking screw abuts against the base, thereby achieving the locking of the relative position of the knife rotating seat and the base.

[0003] However, since the end of the locking screw directly contacts the top of the thread of the outer thread of the base, and the contact area is small, the locking effect is not good, and it is easy to produce looseness, causing the displacement of the knife rotating seat relative to the base. Moreover, the top of the thread of the outer thread of the base is prone to deformation after being stressed for a long time, causing the knife rotating seat to jam when rotating, resulting in the base and the knife rotating seat being unable to be normally used, affecting the service life. In addition, the end of the locking screw is prone to wear when being locked in the outer thread for a long time, and metal particles are generated and fall off. These metal particles falling into the gap of the outer thread will cause the knife rotating seat to jam when rotating, and will also cause the base and the knife rotating seat to be unable to be normally used, affecting the service life. SUMMARY

[0004] One of the main purposes of the present application is to overcome at least one of the defects of the prior art, and to provide a cutting knife device that avoids the generation of debris caused by the overpressure wear of the locking function on the base.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] According to one aspect of the present application, a cutting knife device is provided, which is applied to a pole piece cutting knife device. The cutting knife device includes a base and a knife rotating seat, and the base and the knife rotating seat respectively have a ring structure, and the knife rotating seat is sleeved on the outer periphery of the base. The knife rotating seat is provided with a through hole penetrating in the radial direction, and the through hole is provided with a pressing piece, an elastic piece and a locking structure. The pressing piece has a pressing end face facing the base. The elastic piece has a proximal end close to the base and a distal end away from the base. The proximal end is connected to the knife rotating seat, and the distal end is connected to the pressing piece. The locking structure is configured to adjust the conversion of the pressing piece between a locked position and an unlocked position. When the pressing piece is in the locked position, the pressing end face abuts against the outer periphery of the base, and the elastic piece is compressed to apply a force away from the base to the pressing piece.

[0007] From the above technical solutions, the cutter device provided by the present application has the following advantages and positive effects:

[0008] The cutter device provided by the present application comprises a base and a cutter rotating seat, the cutter rotating seat is provided with a through hole, a pressing piece, an elastic piece and a locking structure are arranged in the through hole, the proximal end of the elastic piece close to the base is connected to the cutter rotating seat, and the distal end of the elastic piece away from the base is connected to the pressing piece, the locking structure is used for adjusting the conversion of the pressing piece between a locking position and a release position, and the pressing end surface of the pressing piece abuts against the base when the pressing piece is in the locking position. Through the above design, the base and the cutter rotating seat can be locked by using the pressing piece, and when the pressing piece is locked, the elastic piece can be used to apply an action force away from the base to the pressing piece, thereby avoiding over-pressing of the base by the pressing piece when the pressing piece is in the locking position, and thereby avoiding the problem of falling debris, and at the same time, the fastening effect is optimized.

[0009] Another main purpose of the present application is to overcome at least one of the defects of the prior art, and to provide an extreme plate cutting device with better positioning effect of the base and the cutter rotating seat.

[0010] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0011] According to another aspect of the present application, an extreme plate cutting device is provided, wherein the cutter device provided by the present application is included.

[0012] From the above technical solutions, the extreme plate cutting device provided by the present application has the following advantages and positive effects:

[0013] The extreme plate cutting device provided by the present application can avoid over-pressing of the base for locking function, thereby avoiding the problem of falling debris, and at the same time, the fastening effect is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0014] The various objects, features and advantages of the present application will become more apparent from the following detailed description of preferred embodiments of the present application, considered in conjunction with the accompanying drawings. The drawings are not necessarily to scale, with emphasis being placed on illustrating the principles of the present application. In the drawings, like reference numerals identify like parts throughout the views. Among other things:

[0015] Figure 1 is a perspective structural schematic view of a cutter device according to an exemplary embodiment;

[0016] Figure 2 is Figure 1 is a perspective structural schematic view of a cutter device according to an exemplary embodiment;

[0017] Figure 3 is Figure 1partial sectional view of the cutter device shown with the pressure member in the locked position;

[0018] Figure 4 is Figure 3 a partial sectional view of the cutter device shown with the pressure member in the locked position;

[0019] Figure 5 is Figure 1 partial sectional view of the cutter device shown with the pressure member in the unlocked position;

[0020] Figure 6 is Figure 1 partial sectional view of the cutter device shown with the pressure member in the unlocked position;

[0021] Figure 7 is a partial sectional view of the cutter device shown with the pressure member in the unlocked position according to another exemplary embodiment.

[0022] The reference signs are explained as follows:

[0023] 100. base;

[0024] 110. external thread;

[0025] 200. blade holder;

[0026] 201. blade;

[0027] 202. tension spring;

[0028] 203. stop ring;

[0029] 204. circlip;

[0030] 210. through hole;

[0031] 300. pressure member;

[0032] 310. pressure end face;

[0033] 311. locking thread;

[0034] 320. first part;

[0035] 330. second part;

[0036] 400. elastic member;

[0037] 500. support block;

[0038] 610. bolt. DETAILED DESCRIPTION

[0039] The features and advantages of the present application will be more fully apparent from the following detailed description, taken in conjunction with the accompanying drawings, in which:

[0040] In the following description of various example embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example structures, systems, and steps in which aspects of the present application can be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps can be utilized and structural and functional modifications can be made without departing from the scope of the present application. Also, while the terms "top," "bottom," "front," "back," and the like can be used in this specification to describe various example features and elements of the present application, these terms are used herein as a shorthand notations, and in one example are utilized to more particularly note the orientations of the example structures as shown in the figures. Any terminology that is used herein should not be deemed to be a limitation on the present application unless expressly stated to be such.

[0041] Referring to Figure 1 , a perspective view schematically shows the cutting device according to the present application. In this example embodiment, the cutting device according to the present application is described by taking the application of the cutting device to a pole piece cutting device as an example. It is easy for those skilled in the art to understand that various modifications, additions, substitutions, deletions or other changes can be made to the following specific embodiments in order to apply the relevant design of the present application to other types of pole piece cutting devices, and these changes are still within the scope of the principle of the cutting device according to the present application.

[0042] As shown in Figure 1 , in an embodiment of the present application, the cutting device according to the present application comprises a base 100 and a cutter rotating seat 200, the base 100 and the cutter rotating seat 200 are respectively in the form of a ring structure, and the cutter rotating seat 200 is sleeved on the outer periphery of the base 100. Referring to Figures 2 to 6 , Figure 2 , a perspective exploded view schematically shows the cutting device according to the present application, which can embody the principle of the present application; Figure 3 , a partial cross-sectional view schematically shows the pressing member 300 in the locked position; Figure 4 , an exploded view schematically shows Figure 3 ; Figure 5 , a partial cross-sectional view schematically shows the pressing member 300 in the released position; Figure 6 , another perspective exploded view schematically shows the cutting device according to the present application, which can embody the principle of the present application. The structure, connection mode and functional relationship of each main component of the cutting device according to the present application will be described in detail below in combination with the above-mentioned drawings.

[0043] like Figures 3 to 5 As shown, in one embodiment of the present invention, the blade holder 200 has a radially penetrating through hole 210, and a pressing member 300, an elastic member 400, and a locking structure are disposed within the through hole 210. Specifically, the pressing member 300 has a pressing end face 310 facing the base 100, and the elastic member 400 has a proximal end near the base 100 and a distal end away from the base 100. The proximal end is connected to the blade holder 200, and the distal end is connected to the pressing member 300. The locking structure is used to adjust the pressing member 300 between a locked position and an unlocked position. Accordingly, when the pressing member 300 is in the locked position, the pressing member 300 abuts against the outer periphery of the base 100 with its pressing end face 310, thereby locking the relative position of the base 100 and the blade holder 200. At this time, the elastic member 400 is compressed and applies a force away from the base 100 to the pressing member 300. Through the above design, the present invention can lock the base 100 and the blade holder 200 by using the pressing member 300. When the pressing member 300 is locked, the elastic member 400 can apply a force away from the base 100 to the pressing member 300, thereby avoiding the pressing member 300 from causing excessive pressure on the base 100 when it is locked, thus avoiding the problem of debris falling off, and at the same time, it is beneficial to optimize the fastening effect.

[0044] In one embodiment of the present invention, when the pressing member 300 is in the locked position, the proportion of the length of the compressed elastic member 400 to the length of the elastic member 400 when it is not compressed can be greater than or equal to 1 / 2, for example, 1 / 2, 5 / 8, 3 / 4, 4 / 5, etc. In other words, the compression of the elastic member 400 when the pressing member 300 is in the locked position is no more than 1 / 2 of the original height of the elastic member 400. Through the above design, the present invention can avoid the problem that the compression of the elastic member 400 is not obvious due to the above proportion being too large, resulting in a small force applied to the pressing member 300 away from the base 100, while avoiding the problem that the elastic member 400 is over-compressed due to the above proportion being too small, leading to structural damage and reduced durability. In some embodiments, depending on the reasonable selection of the material, structural form, or size specifications of the elastic member 400, when the pressing member 300 is in the locked position, the proportion of the length of the compressed elastic member 400 to the length of the elastic member 400 when it is not compressed can also be less than 1 / 2, for example, 2 / 5, etc., and is not limited to this embodiment.

[0045] Based on the design that the length of the compressed elastic element 400 is greater than or equal to 1 / 2 of the length of the elastic element 400 when it is not compressed, in one embodiment of the present invention, when the pressing member 300 is in the locked position, the length of the compressed elastic element 400 is greater than or equal to 2 / 3 of the length of the elastic element 400 when it is not compressed. In other words, the compression amount of the elastic element 400 when the pressing member 300 is in the locked position is no more than 1 / 3 of the original height of the elastic element 400.

[0046] like Figure 3 As shown, in one embodiment of the present invention, the elastic element 400 can be a spring. Through the above structural design, the present invention has advantages such as low cost, ease of implementation, and convenient installation. In some embodiments, the elastic element 400 can also be a sheet spring or a leaf spring, etc., and is not limited to this embodiment.

[0047] In one embodiment of the present invention, the pressing end face 310 of the pressing member 300 may be provided with a buffer structure, which may be, for example, but not limited to, buffer foam. Through the above design, the present invention can further avoid overpressure on the base 100 by utilizing the buffer structure, while ensuring the reliability of the locking and fixing.

[0048] like Figure 3 As shown, in one embodiment of the present invention, a support block 500 may be provided within the through hole 210, and the proximal end of the elastic member 400 may be connected to the support block 500. Through the above structural design, the present invention provides a structural position for the elastic member 400 to connect with the blade holder 200, facilitating the placement of the elastic member 400 and thus providing support for the pressing member 300, facilitating release. In some embodiments, the proximal end of the elastic member 400 may also be directly connected to the wall of the through hole 210, or may be connected to the blade holder 200 via other structures, and is not limited to this embodiment.

[0049] like Figure 3As shown, based on the structural design that the support block 500 is arranged in the through hole 210, in an embodiment of the present application, the support block 500 can be arranged at the aperture of the through hole 210 towards the base 100, and the support block 500 can have a ring type structure. On this basis, the abutting member 300 can have a first portion 320 and a second portion 330, the outer diameter of the first portion 320 matches the hole diameter of the through hole 210 and is in contact with the hole wall of the through hole 210, the second portion 330 is connected to one side of the first portion 320 towards the base 100, and the outer diameter of the second portion 330 is equal to the hole diameter of the inner hole of the support block 500. Accordingly, when the abutting member 300 is in the locking position, the second portion 330 passes through the inner hole and abuts against the base 100. Of course, when the abutting member 300 is in the release position, the second portion 330 can still have part of it arranged in the inner hole of the support block 500, or can completely leave the inner hole and be located at the side of the support block 500 away from the base 100 (for example Figure 5 As shown, only the end of the second portion 330 away from the first portion 320 (i.e. the abutting end face 310) needs to be ensured not to contact the base 100. Through the above structural design, the present application can avoid structural interference between the support block 500 and the abutting member 300, and at the same time can use the inner hole of the support block 500 to provide a guiding action for the abutting member 300. In some embodiments, the outer diameter of the second portion 330 of the abutting member 300 can also be smaller than the hole diameter of the inner hole of the support block 500, and is not limited to the present embodiment.

[0050] As Figures 3 to 5As shown, in an embodiment of the present application, the through hole 210 can be a threaded hole, i.e. the hole wall of the through hole 210 can be provided with internal threads. On this basis, the locking structure can include a bolt 610 which is screwed into the through hole 210 and abuts against the side of the abutting piece 300 which is away from the base 100. Accordingly, when it is necessary to lock the relative position of the base 100 and the tool rotating seat 200, the bolt 610 can be screwed to push the abutting piece 300 to move in the through hole 210 towards the base 100 until the abutting piece 300 moves to the locking position, and due to the screwing pre-tightening force of the bolt 610 and the internal threads of the through hole 210, the bolt 610 limits the abutting piece 300 to keep in the locking position. When it is necessary to adjust the relative position of the base 100 and the tool rotating seat 200, the bolt 610 can be unscrewed in the opposite direction to make the pushing force of the bolt 610 to the abutting piece 300 disappear, and under the elastic force of the elastic piece 400, the abutting piece 300 moves in the through hole 210 away from the base 100, and when the elastic piece 400 reaches the equilibrium state, the abutting piece 300 returns to the unlocking position. At this time, the bolt 610 can be removed from the through hole 210, or the screwing relationship can still be maintained. Through the above structural design, the present application can have the advantages of simple structure, low cost and easy implementation. At the same time, by screwing the bolt 610 in the through hole 210 with different strokes, the moving position of the abutting piece 300 can be finely adjusted, so that the present application further has flexibility and adaptability to different application conditions.

[0051] As shown in Figure 6 , in an embodiment of the present application, the tool rotating seat 200 is used to set the pole piece cutting tool device, wherein the pole piece 201 is clamped and fixed to the tool rotating seat 200 via the tension spring 202. On this basis, the retaining ring 203 and the clamping spring 204 can also be provided on the tool rotating seat 200, the retaining ring 203 is used to position the pole piece 201 to avoid falling out, and the clamping spring 204 is used to further position the retaining ring 203 and the pole piece 201.

[0052] As shown in Figure 7 , Figure 7 , a partial cross-sectional view of a cutting tool device capable of embodying the principles of the present application is shown, wherein the state of the abutting piece 300 in the unlocking position is specifically shown, and the specific cross-sectional position can refer to the cross-sectional position of Figures 3 to 5 .

[0053] As shown in Figure 7As shown, in an embodiment of the present application, the outer periphery of the base 100 is provided with external threads 110, and the inner periphery of the cutter rotating seat 200 is provided with internal threads matched with the external threads 110. On this basis, the abutting end face 310 of the abutting piece 300 can be provided with locking threads 311 matched with the external threads 110 of the base 100. Accordingly, when the abutting piece 300 is in the locking position, the locking threads 311 and the external threads 110 are mutually embedded. Through the above structural design, the present application can realize the contact between the surfaces at the abutting position of the abutting piece 300 and the external threads 110, further improving the reliability of the locking function, and further avoiding the problem of falling of debris due to overpressure. In some embodiments, the abutting end face 310 of the abutting piece 300 can also be a plane or a curved surface, and is not limited to the present embodiment.

[0054] Based on the structure design that the abutting end face 310 of the abutting piece 300 is provided with the locking threads 311, in an embodiment of the present application, the abutting end face 310 of the abutting piece 300 can be an arc-shaped surface concave, accordingly, the locking threads 311 are arranged along the arc-shaped abutting end face 310 to be an arc-shaped thread structure, and the arc-shaped structure of the locking threads 311 is matched with the arc-shaped structure of the outer periphery of the base 100. Through the above structural design, since the base 100 is in a ring structure, i.e., the outer periphery of the base 100 is in a cylindrical surface shape, the present application can further ensure the full matching between the locking threads 311 and the external threads 110 by the design of the arc-shaped abutting end face 310, further improving the reliability of the locking function.

[0055] It should be noted that the cutter device shown in the drawings and described in the present specification is only a few examples of many kinds of cutter devices that can employ the principles of the present application. It should be clearly understood that the principles of the present application are by no means limited to any details or any components of the cutter device shown in the drawings or described in the present specification.

[0056] In summary, the cutter device provided by the application comprises a base 100 and a cutter rotating seat 200, the cutter rotating seat 200 is provided with a through hole 210, the through hole 210 is provided with a pressing piece 300, an elastic piece 400 and a locking structure, the elastic piece 400 is connected to the cutter rotating seat 200 at a proximal end close to the base 100, and is connected to the pressing piece 300 at a distal end away from the base 100, the locking structure is used for adjusting the conversion of the pressing piece 300 between a locking position and a release position, and the pressing end face 310 of the pressing piece 300 abuts against the base 100 when the pressing piece 300 is in the locking position. Through the above design, the base 100 and the cutter rotating seat 200 can be locked by using the pressing piece 300, and the elastic piece 400 can be used to apply an action force away from the base 100 to the pressing piece 300 when the pressing piece 300 is locked, so as to avoid overpressure of the base 100 by the pressing piece 300 in the locking position, thereby avoiding the problem of falling debris, and facilitating optimization of the fastening effect.

[0057] Based on the above detailed description of the several exemplary embodiments of the cutter device provided by the application, an exemplary embodiment of the pole piece cutting device provided by the application will be described below.

[0058] In an embodiment of the application, the pole piece cutting device provided by the application comprises the cutter device provided by the application and described in detail in the above embodiments.

[0059] It should be noted that the pole piece cutting device shown in the drawings and described in the specification is only a few examples of many pole piece cutting devices that can employ the principles of the application. It should be clearly understood that the principles of the application are by no means limited to any details or any components of the pole piece cutting device shown in the drawings or described in the specification.

[0060] In summary, the pole piece cutting device provided by the application can avoid overpressure of the base for locking function, thereby avoiding the problem of falling debris, and facilitating optimization of the fastening effect by using the cutter device provided by the application.

[0061] The exemplary embodiments of the cutting tool apparatus and the pole piece cutting apparatus presented hereinabove have been described and / or illustrated in detail. It should be understood that the embodiments of the present application are not limited to the specific embodiments described hereinabove, but include each and every specific embodiment described hereinabove individually as well as in any combination. Each of the components and / or steps of each embodiment can be used individually and / or in combination with other components and / or steps of other embodiments. Where elements / components / etc. described and / or illustrated hereinabove are introduced, the articles "a", "an", and "the" are used herein to introduce one or more than one element / component / etc. to the extent allowed by the specification and the paragraph above. The terms "comprising", "including", and "having" are used herein to mean including at least the recited element / component / etc. and are not intended to be construed as limiting. Furthermore, the terms "first", "second", and the like are used herein merely to distinguish one element / component / etc. from another element / component / etc. and are not intended to be construed as limiting.

[0062] While the cutting tool apparatus and the pole piece cutting apparatus presented herein have been described in accordance with various specific embodiments, it is evident that modifications and alterations can occur to those skilled in the art upon reading and understanding the preceding detailed description.

Claims

1. A cutter device, characterized in that, The cutting device comprises a base and a cutter seat, the base and the cutter seat are respectively ring-shaped structures, and the cutter seat is sleeved on the outer periphery of the base; wherein the cutter seat is provided with a through hole penetrating in the radial direction, the through hole is provided with a pressing piece, an elastic piece, a locking structure and a supporting block, the pressing piece has a pressing end face facing the base, the pressing end face is a plane or a curved surface, the elastic piece has a proximal end close to the base and a distal end away from the base, the proximal end is connected to the supporting block, and the distal end is connected to the pressing piece; the supporting block is arranged at the aperture of the through hole facing the base, the supporting block is a ring-shaped structure, the pressing piece has a first part and a second part, the outer diameter of the first part matches the hole diameter of the through hole and is in contact with the hole wall of the through hole, the second part is connected to one side of the first part facing the base, and the outer diameter of the second part is less than or equal to the hole diameter of the inner hole of the supporting block; the locking structure is configured to adjust the conversion of the pressing piece between the locked position and the released position, when the pressing piece is in the locked position, the second part passes through the inner hole, the pressing end face abuts against the outer periphery of the base, and the elastic piece is compressed to apply a force away from the base to the pressing piece.

2. The cutter device of claim 1, wherein When the pressing piece is in the locked position, the ratio of the length of the compressed elastic piece to the length of the elastic piece when it is not compressed is greater than or equal to 1 / 2.

3. The cutter device of claim 1, wherein The elastic piece is a spring, a spring sheet or a leaf spring.

4. The cutter apparatus of claim 1, wherein The pressing end face of the pressing piece is provided with a buffer structure.

5. The cutter apparatus of claim 1, wherein, The through hole is a threaded hole, the locking structure comprises a bolt, the bolt is screw-connected with the through hole, and the bolt abuts against one side of the pressing piece away from the base.

6. The cutter device according to any one of claims 1 to 5, characterized in that The outer periphery of the base is provided with an external thread; wherein the pressing end face is provided with a locking thread, the locking thread matches the external thread, and when the pressing piece is in the locked position, the locking thread and the external thread are embedded with each other.

7. The cutter device according to any one of claims 1 to 5, characterized in that The cutter seat is provided with a blade, and the blade is fixed to the cutter seat by a pull spring.

8. A pole piece cutting device characterized by, The cutting device comprises any one of claims 1-7.

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