Cutter mechanism and battery cell manufacturing equipment
By adopting sliding-fit guide rails and slider structures in the lithium-ion battery cell production equipment, the problems of low movement efficiency and inaccurate guidance of the movable knife are solved, and the efficient cutting and long life of the cutter are achieved.
Patent Information
- Application Number
- CN202422389086.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-29
AI Technical Summary
During the production of existing lithium-ion battery cells, the reciprocating efficiency of the movable knife is low and the guidance is inaccurate, resulting in poor cutting effect and short cutter life.
The sliding-fit guide rail and slider structure is adopted to realize the reciprocating linear movement of the movable knife. The low friction and low vibration characteristics of the slider and the guide rail are used to ensure the efficient linear movement of the movable knife and the guidance accuracy.
It improves the reciprocating efficiency of the movable knife, ensures the cutting effect and extends the service life of the cutter.
Smart Images
Figure CN223211541U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of battery preparation, and in particular to a cutting mechanism and battery cell manufacturing equipment. Background Art
[0002] Lithium-ion battery cell prefabrication equipment must complete multiple processes, including cutting coils into individual sheets, undergoing thermal lamination, sizing, short-circuit testing, waste removal, and folding into cells. The cutting process is performed by a cutting unit, whose core components include a fixed blade and a movable blade. The cutting action is achieved by the movable blade's reciprocating upward and downward motion, constantly approaching and moving away from the fixed blade. As cell production efficiency increases, the overall machine's tape speed continues to increase, requiring a corresponding increase in the movable blade's reciprocating motion speed. Furthermore, any deviation in the angle of the movable blade relative to the fixed blade during cutting can affect the cutting effect (such as increased burrs) and the blade's lifespan.
[0003] Traditional solutions often use guide columns for a single guiding function, which does not improve the efficiency of reciprocating motion. At the same time, using guide columns for guidance will generate large impacts and vibrations, which may affect the guiding accuracy after long-term operation, thereby affecting the cutting effect and cutter life. Utility Model Content
[0004] The purpose of this application is to provide a cutting mechanism and battery cell manufacturing equipment to reduce the loss of the reciprocating motion of the movable knife, improve efficiency, and ensure cutting effect and cutter life.
[0005] The embodiments of the present application can be implemented as follows:
[0006] In a first aspect, the utility model provides a cutting mechanism, comprising a base, a sliding assembly, a fixed knife and a movable knife;
[0007] At least two of the sliding assemblies are arranged in parallel, and the sliding assemblies include a guide rail and a slider that are slidably matched, and the guide rail is provided on the base;
[0008] The fixed knife is fixed to the base, the movable knife is connected to the slider, and the movable knife and the fixed knife are directly opposite to each other in the length direction of the guide rail.
[0009] In an optional embodiment, there are two sliding assemblies, and both ends of the movable knife are respectively connected to the two sliding blocks.
[0010] In an optional embodiment, the cutting mechanism further includes a movable knife seat, and both ends of the movable knife are respectively connected to the slider via the movable knife seat.
[0011] In an optional embodiment, the movable knife seat includes a first connecting block and a second connecting block connected at an angle, the length direction of the first connecting block is the same as the length direction of the guide rail, the first connecting block is connected to the slider, and the second connecting block is connected to the end of the movable knife.
[0012] In an optional embodiment, the cutting mechanism further comprises a fixed knife seat, which is fixed to the base and located on a side of the fixed knife facing away from the movable knife, and the fixed knife is fixed to the fixed knife seat.
[0013] In an optional embodiment, the fixed knife seat is provided with a gap adjusting member, the fixed knife is connected to the gap adjusting member, and the gap adjusting member can change its position along the thickness direction of the fixed knife.
[0014] In an optional embodiment, an adjustment groove is provided on a side of the fixed knife holder facing the fixed knife, and the gap adjustment piece is partially accommodated in the adjustment groove. The width dimension of the adjustment groove in the thickness direction of the fixed knife is larger than the width dimension of the gap adjustment piece in the thickness direction of the fixed knife, so that the gap adjustment piece can move relative to the adjustment groove.
[0015] In an optional embodiment, the fixed knife seat is provided with tightening holes connected to the adjustment groove on two opposite side walls in the thickness direction of the fixed knife, and a tightening piece is fixed in the tightening hole, and the tightening piece abuts against the gap adjustment piece.
[0016] In an optional embodiment, the tightening member includes a jack screw, and the jack screw is threadably engaged with the tightening hole.
[0017] In a second aspect, the present invention provides a battery cell manufacturing device, comprising the cutter mechanism described in any one of the aforementioned embodiments.
[0018] Compared with the prior art, the beneficial effects of the embodiments of the present application include, for example:
[0019] The reciprocating linear motion of the movable knife relative to the base is achieved through the sliding cooperation of the guide rail and the slider. The linear characteristics of the slider moving along the guide rail and the low friction and low vibration characteristics of the movement between the slider and the guide rail are utilized to achieve the high efficiency and guiding accuracy of the movable knife's linear motion, reduce the loss of the movable knife's reciprocating motion, improve efficiency, and ensure the cutting effect and cutter life. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0021] Figure 1 A schematic diagram of a cutter mechanism according to an embodiment of the present application;
[0022] Figure 2 for Figure 1 Schematic cross-section of .
[0023] Icons: 10-base; 20-sliding assembly; 21-guide rail; 22-slider; 30-fixed knife; 40-movable knife; 50-movable knife seat; 51-first connecting block; 52-second connecting block; 60-fixed knife seat; 61-adjustment slot; 62-tightening hole; 70-clearance adjustment piece; 80-tightening piece; 90-handle; 91-cam follower. DETAILED DESCRIPTION
[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.
[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element 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," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.
[0029] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to 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.
[0030] The following combination Figure 1 In the absence of conflict, the following embodiments and features of the embodiments may be combined with each other.
[0031] An embodiment of the present application discloses a cutting mechanism, which is mainly used to cut a material strip into multiple pole pieces. Of course, it can also be used in other similar scenarios where strip-shaped raw materials need to be cut into sheet materials.
[0032] The cutting mechanism includes a base 10, a sliding assembly 20, a fixed knife 30 and a movable knife 40; at least two of the sliding assemblies 20 are arranged in parallel, and the sliding assembly 20 includes a guide rail 21 and a slider 22 that slide together, and the guide rail 21 is set on the base 10; the fixed knife 30 is fixed to the base 10, and the movable knife 40 is connected to the slider 22, and the movable knife 40 and the fixed knife 30 are facing each other in the length direction of the guide rail 21.
[0033] In this embodiment, the reciprocating linear motion of the movable knife 40 relative to the base 10 is achieved by slidingly fitting the guide rail 21 and the slider 22. The linear characteristics of the slider 22 moving along the guide rail 21 and the low friction and low vibration characteristics of the movement between the slider 22 and the guide rail 21 are utilized to achieve high efficiency and guiding accuracy of the linear motion of the movable knife 40, reduce the loss of the reciprocating motion of the movable knife 40, improve efficiency, and ensure the cutting effect and cutter life.
[0034] Specifically, there are two sliding assemblies 20 , and both ends of the movable knife 40 are respectively connected to the two sliding blocks 22 to stably support the movable knife 40 and ensure the accuracy of the reciprocating linear motion of the movable knife 40 .
[0035] The cutting mechanism further includes a movable knife holder 50 , through which both ends of the movable knife 40 are connected to the slider 22 , respectively, to increase the connection area between the movable knife 40 and the slider 22 , thereby ensuring the connection reliability between the slider 22 and the movable knife 40 .
[0036] Specifically, the movable knife seat 50 includes a first connecting block 51 and a second connecting block 52 connected at an angle. The length direction of the first connecting block 51 is the same as the length direction of the guide rail 21. The first connecting block 51 is connected to the slider 22, and the second connecting block 52 is connected to the end of the movable knife 40. This can ensure the connection reliability of the movable knife seat 50 and the slider 22 and the connection reliability of the movable knife seat 50 and the movable knife 40.
[0037] In order to facilitate the installation of the fixed knife 30 , the cutting mechanism further includes a fixed knife seat 60 . The fixed knife seat 60 is fixed to the base 10 and is located on the side of the fixed knife 30 facing away from the movable knife 40 . The fixed knife 30 is fixed to the fixed knife seat 60 .
[0038] In this embodiment, the fixed knife holder 60 is provided with a gap adjustment member 70, and the fixed knife 30 can be connected to the gap adjustment member by means of screws or the like. The gap adjustment member can change its own position along the thickness direction of the fixed knife 30, so that the gap between the movable knife 40 and the fixed knife 30 can be adjusted through the gap adjustment member 70 to obtain the best cutting effect.
[0039] Specifically, combined Figure 2The fixed knife seat 60 is provided with an adjustment groove 61 on a side facing the fixed knife 30, and the gap adjustment member 70 is partially accommodated in the adjustment groove 61. The width of the adjustment groove 61 in the thickness direction of the fixed knife 30 is greater than the width of the gap adjustment member 70 in the thickness direction of the fixed knife 30, so that the gap adjustment member 70 can move relative to the adjustment groove 61, thereby changing the position of the movable knife 40 to achieve the effect of adjusting the gap between the movable knife 40 and the fixed knife 30.
[0040] In more detail, the fixed knife seat 60 is provided with tightening holes 62 connected to the adjustment groove 61 on the two side walls opposite to each other in the thickness direction of the fixed knife 30, and a tightening member 80 is fixed in the tightening hole 62, and the tightening member 80 abuts against the gap adjustment member 70. In this way, when the position of the gap adjustment member 70 needs to be adjusted, it is only necessary to loosen the tightening member 80, and then after the position is changed, the tightening member 80 abuts against the gap adjustment member 70 to fix the gap adjustment member 70.
[0041] The tightening member 80 may be a jackscrew, and the jackscrew is threadedly engaged with the tightening hole 62 .
[0042] Of course, the tightening member 80 can also be a pin, and it is also feasible to fix it with the tightening hole 62 through the engagement of the protrusion and the recess. For example, a slide and a buckle groove are provided on the inner wall of the tightening hole 62, the slide extends along the axial direction of the tightening hole 62, and the buckle groove extends along the circumferential direction of the tightening hole 62. A protrusion is provided on the pin, so that the protrusion slides over the slide, and then the pin is rotated to make the protrusion buckle into the buckle groove, so that the pin presses against the gap adjustment member 70.
[0043] There can be multiple gap adjustment members 70, and the number of adjustment slots 61 is the same as the number of gap adjustment members 70. The adjustment slots 61 are spaced apart along the length direction of the fixed knife 30. There is a gap adjustment member 70 in each adjustment slot 61. At the same time, each adjustment slot 61 has at least one tightening hole 62 on both sides of the fixed knife 30 in the thickness direction to fix each gap adjustment member 70.
[0044] The cutter is a consumable part and needs to be repaired or replaced after a certain period of use. Therefore, a quick disassembly and assembly structure is designed, that is, a handle 90 and a cam follower 91 are provided on the base 10. The cam follower 91 is used to cooperate with the installation space of the external equipment. In this way, when disassembling, the entire cutter mechanism can be directly pulled by the handle 90 to move along the track of the cam follower 91, thereby realizing quick assembly and disassembly.
[0045] An embodiment of the present application discloses a battery cell manufacturing device, which includes the cutter mechanism of the above embodiment and thus also has corresponding structure and beneficial effects.
[0046] In summary, the embodiments of the present application disclose a cutting mechanism and a battery cell manufacturing device, which realizes the reciprocating linear motion of the movable knife 40 relative to the base 10 through the sliding cooperation of the guide rail 21 and the slider 22, and utilizes the linear characteristics of the slider 22 moving along the guide rail 21 and the low friction and low vibration characteristics of the movement between the slider 22 and the guide rail 21 to realize the high efficiency and guiding accuracy of the linear motion of the movable knife 40, reduce the loss of the reciprocating motion of the movable knife 40, improve efficiency, and ensure the cutting effect and cutter life.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A cutting mechanism, characterized in that: It comprises a base (10), a sliding assembly (20), a fixed knife (30) and a movable knife (40); At least two sliding assemblies (20) are arranged in parallel, and the sliding assemblies (20) include a guide rail (21) and a slider (22) that are slidably matched, and the guide rail (21) is provided on the base (10); The fixed knife (30) is fixed to the base (10), the movable knife (40) is connected to the slider (22), and the movable knife (40) and the fixed knife (30) are facing each other in the length direction of the guide rail (21).
2. The cutter mechanism according to claim 1, characterized in that: There are two sliding assemblies (20), and both ends of the movable knife (40) are respectively connected to the two sliding blocks (22).
3. The cutter mechanism according to claim 2, characterized in that: The cutting mechanism further comprises a movable knife seat (50), and both ends of the movable knife (40) are respectively connected to the slider (22) through the movable knife seat (50).
4. The cutter mechanism according to claim 3, characterized in that: The movable knife seat (50) comprises a first connecting block (51) and a second connecting block (52) connected at an angle, wherein the length direction of the first connecting block (51) is the same as the length direction of the guide rail (21), the first connecting block (51) is connected to the slider (22), and the second connecting block (52) is connected to the end of the movable knife (40).
5. The cutter mechanism according to claim 1, characterized in that: The cutting mechanism further comprises a fixed knife seat (60), which is fixed to the base (10) and located on the side of the fixed knife (30) facing away from the movable knife (40), and the fixed knife (30) is fixed to the fixed knife seat (60).
6. The cutter mechanism according to claim 5, characterized in that: The fixed knife seat (60) is provided with a gap adjusting member (70), the fixed knife (30) is connected to the gap adjusting member, and the gap adjusting member can change its own position along the thickness direction of the fixed knife (30).
7. The cutter mechanism according to claim 6, characterized in that: The fixed knife seat (60) is provided with an adjustment groove (61) on a side facing the fixed knife (30), and the gap adjustment member (70) is partially accommodated in the adjustment groove (61). The width of the adjustment groove (61) in the thickness direction of the fixed knife (30) is greater than the width of the gap adjustment member (70) in the thickness direction of the fixed knife (30), so that the gap adjustment member (70) can move relative to the adjustment groove (61).
8. The cutter mechanism according to claim 7, characterized in that: The fixed knife seat (60) is provided with a tightening hole (62) connected with the adjustment groove (61) on two side walls opposite to each other in the thickness direction of the fixed knife (30), and a tightening member (80) is fixed in the tightening hole (62), and the tightening member (80) abuts against the gap adjustment member (70).
9. The cutter mechanism according to claim 8, characterized in that: The tightening member (80) comprises a jack screw, and the jack screw is threadably engaged with the tightening hole (62).
10. A battery cell manufacturing device, characterized in that: The invention comprises the cutting mechanism according to any one of claims 1 to 9.