CN115816139A - Cutting device and electricity core production system - Google Patents

Abstract

The invention relates to a cutting device and a battery cell production system. Wherein the cutting device includes: the cutting assembly is used for cutting the material; at least one first mounting base supporting the cutting assembly; the first driving assembly can apply force to the first mounting seat so that the first mounting seat supports the cutting assembly to cut the material; and the second driving assembly drives the cutting assembly to reciprocate along the conveying direction of the material conveying channel. The cutting assembly is driven to move by the second driving assembly to realize the cutting function, so that compared with the existing scheme of cutting materials due to the fact that the materials are temporarily stopped, the material is prevented from being temporarily stopped, and the cutting efficiency of the materials is improved in a cutting mode; in addition, in the chasing and cutting process of the cutting device, the second driving assembly is adopted to drive the cutting assembly to move, so that the problem of low response speed caused by the overall movement of the existing cutting device is solved, and the cutting precision of the material is improved.

Description

Cutting device and electricity core production system

Technical Field

The invention relates to the technical field of battery production, in particular to a cutting device and a battery cell production system.

Background

In the conveying process of the materials, the materials need to be cut according to the production and processing requirements. For example, in the production process of lithium batteries, a cutting device is required to cut continuous pole pieces.

The principle of the existing pole piece cutting device is that the cutting distance of the pole piece is set, the transportation of the pole piece is stopped after the walking path reaches the set distance in the pole piece conveying process, then the cutting device executes the cutting process, and the cutting efficiency of the pole piece of the device is not high. The cutting device adopting the cutting-after mode has low response speed of cutting-after, so that the size of the cut pole piece has larger error.

Disclosure of Invention

Therefore, it is necessary to provide a cutting device and a cell production system including the cutting device, in order to solve the problems of low efficiency, slow response of chase cutting and the like of the conventional cutting device.

A cutting device, comprising:

the cutting assembly is used for cutting the materials;

at least one first mounting base supporting the cutting assembly;

the first driving assembly can apply force to the first mounting seat so that the first mounting seat supports the cutting assembly to cut materials;

and the second driving assembly drives the cutting assembly to reciprocate along the conveying direction of the material conveying channel.

Above-mentioned cutting device, the material passes from cutting assembly's transfer passage, and when needs cut the material, second drive assembly drives cutting assembly and removes and reach the translation rate the same with the material along material direction of delivery, also makes cutting assembly realize following up the function of cutting promptly, and first drive assembly application of force is in first mount pad for first mount pad is supported to join in marriage cutting assembly and is cut the material, and cutting assembly is closed this moment, and material transfer passage closes. After the material is cut, the conveying channel of the cutting assembly is opened, the material continues to move along the conveying channel, and the second driving assembly drives the cutting assembly to return to the initial position. In the scheme, the cutting assembly is driven to move by the second driving assembly to realize the cutting function, compared with the existing scheme of cutting materials by pausing the movement of the materials, the pausing movement of the materials is avoided, and the cutting efficiency of the materials is improved in a cutting mode; in addition, in the following cutting process, the second driving assembly drives the cutting assembly to move, so that the problem of low response speed caused by the overall movement of the existing cutting device is solved, and the cutting precision of the material is improved.

In one embodiment, the cutting assembly comprises a tool apron and a supporting assembly which are arranged in pairs, wherein one tool apron is connected with the supporting assembly, and the other tool apron is arranged on the supporting assembly in a sliding mode and is connected with or abutted against the first mounting seat. The first mounting seat is supported and slidably arranged on the tool apron of the supporting component, so that the paired tool apron is closed when the tool apron moves, and the function of cutting materials is realized.

In one embodiment, the two ends of the tool apron slidably disposed on the supporting component are respectively provided with a first mounting seat. The two ends of the tool apron which is arranged on the supporting component in a sliding mode are provided with the first installation seats, so that the stability of the tool apron can be guaranteed.

In one embodiment, the supporting component comprises at least two groups of supporting columns, wherein one tool apron is fixed at the same end of each group of supporting columns, and the other tool apron is provided with a sliding hole matched with each group of supporting columns. The support column makes and can form material transfer passage between two blade holders, and the slide opening that the blade holder set up can be convenient for the axis direction of the relative support column of blade holder and remove to make first mount pad can command the blade holder and remove, thereby make two blade holders realize the closure state, accomplish cutting to the material.

In one embodiment, the first driving assembly comprises a first driving element and at least one first motion mechanism, the first driving element drives the first motion mechanism to move, and the first motion mechanism is connected with or abutted against the first mounting seat. The first motion mechanism is driven to move through the first driving element, so that the first motion mechanism can drive the first mounting seat to move, the first mounting seat support tool apron moves, and the material cutting function is achieved.

In one embodiment, the number of the first motion mechanisms is the same as that of the first mounting seats, and the first driving element drives the first motion mechanisms, which are the same as that of the first mounting seats, to move simultaneously. The first driving element drives the first motion mechanisms with the same number as the first mounting seats to move simultaneously, so that the weight of the cutter holder in the cutting assembly can be better shared through the first motion mechanisms, the abrasion of the first motion mechanisms is reduced, and the service life of the first motion mechanisms is prolonged.

In one embodiment, the first movement mechanism includes a cam and a ram, the cam is driven by the first driving element to rotate, one end of the ram is connected or abutted with the cam, and the other end of the ram is connected or abutted with the first mounting seat. When first drive element drive cam rotates, because the eccentric design principle of cam for the ejector pin relative first mount pad that is connected with the cam or butt changes, for example in the rotatory cycle of cam, the ejector pin is close to and keeps away from first mount pad, drives first mount pad through being close to and keeping away from two positions and removes, makes two blade holders in first mount pad support and joins in marriage cutting assembly realize the cutting function.

In one embodiment, the first mounting seat is provided with a connecting assembly, and the connecting assembly fixes the ejector rod on the first mounting seat. Through set up the coupling assembling who is connected with the ejector pin on first mount pad to make the ejector pin at the removal in-process, first mount pad and ejector pin simultaneous movement.

In one embodiment, the connecting assembly comprises a connecting shaft, the ejector rod is provided with a connecting hole, and the connecting shaft is matched and fixed with the connecting hole. The first mounting seat and the ejector rod move synchronously through the matching of the connecting shaft and the connecting hole of the ejector rod.

In one embodiment, the first drive assembly is provided with a mounting plate and the second drive assembly is provided on the mounting plate. The installation plate is arranged on the first driving assembly to install the second driving assembly, so that the size of the cutting device can be reduced. It can be understood that the second driving assembly is stacked on the first driving assembly, and the space ratio of the first driving assembly and the second driving assembly can be reduced.

In one embodiment, the first mount includes a first side plate and a second side plate that together form a cavity facing the cutting assembly. The cavity structure formed by the first side plate and the second side plate can well reduce the vibration acting force transmitted to the first mounting seat by the cutting assembly, and further the stability of the cutting device is guaranteed.

In one embodiment, the mounting plate is provided with at least one guide column, the first side plate is provided with guide holes the number of which is the same as that of the guide columns, and the guide columns are matched with the guide holes in a one-to-one correspondence mode. Through set up the guide post on the mounting panel, can fix a position first mount pad through the guide post in advance, the effort that like this first motion applied on first mount pad is in ideal position to the effort of first mount pad support allocation blade holder has been guaranteed.

In one embodiment, the mounting plate is provided with two groups of guide posts, and the number of the guide posts in each group is at least one;

still set up the second mount pad the same and position one-to-one with the quantity of first mount pad on the mounting panel, the second mount pad is hollow structure, sets up a set of on every second mount pad respectively the guide post.

Can guarantee through two sets of guide posts that the mounted position of two first mount pads is stable, in addition, because the second mount pad adopts hollow structure design, so can reduce the vibration effort transmission of two sets of guide posts to first drive assembly, and then influence whole cutting device's stability.

In one embodiment, the second drive assembly includes a second drive element coupled to the cutting assembly. When the material needs to be cut, a second driving element in the second driving component directly drives the cutting component to move. Because the second drive assembly directly drives the cutting assembly to move, compared with a transmission scheme of a kinematic pair, the cutting device has high response speed.

In one embodiment, the second side plate is provided with a first slide rail along the extending direction of the material, and the tool apron slidably arranged on the supporting component is provided with a first slide block matched with the first slide rail. When the second driving element drives the cutting assembly to work, the cutting assembly can move relative to the first sliding rail on the first mounting seat through the first sliding block, so that abrasion between the cutting assembly and the first mounting seat is reduced, and meanwhile, the moving speed of the cutting assembly is guaranteed.

In one embodiment, the second driving element is a linear motor, and a rotor of the linear motor is connected with one of the tool holders. The rotor of the linear motor is connected with the tool apron, the cutting assembly can be driven to move through the linear motor more quickly, and therefore the cutting function of the cutting device is achieved.

In one embodiment, the rotor is provided with a baffle, two sides of the mounting plate are respectively provided with at least one limiting plate, the limiting plates are distributed along the conveying direction of the material conveying channel and jointly form a limiting area, and the baffle is controlled by the rotor to move in a reciprocating mode in the limiting area. When the rotor of the linear motor moves, the moving interval of the rotor can be limited through the limiting plate, and the problem that the second driving element possibly drives the cutting assembly to fly out is avoided.

In one embodiment, the mounting plate is provided with a plurality of distance sensors distributed along the conveying direction of the material conveying channel, the baffle is provided with a detection block, and the distance sensors can sense the position of the detection block. Through setting up a plurality of distance sensor, can follow closely the cutting in-process, can be through the detection piece position on its perception runner's baffle to the moving speed of linear electric motor is adjusted.

In one embodiment, the mounting plate is further provided with at least one second slide rail along the conveying direction of the material conveying channel and a second slide block matched with the second slide rail, and the second slide block is connected with the cutting assembly. Can bear cutting element through the second slider to guarantee cutting element and remove the stationarity of in-process.

A battery core production system comprises the cutting device. This cutting device is installed in electric core production system, and the pole piece passes from cutting assembly's transfer passage, and when needs cut the pole piece, second drive assembly drives cutting assembly and removes and reach the translation rate the same with the pole piece along material direction of delivery, also makes cutting assembly realize following up the function of cutting promptly, and first drive assembly application of force is in first mount pad for first mount pad supports to join in marriage cutting assembly and cuts the pole piece, and cutting assembly is closed this moment, and material transfer passage closes. After the pole piece is cut, the conveying channel of the cutting assembly is opened, the pole piece continues to move along the conveying channel, and the second driving assembly drives the cutting assembly to return to the initial position. In the battery cell production system, a second driving assembly in the cutting device drives the cutting assembly to move so as to realize the function of tracking cutting. Because the second cutting assembly in the cutting device is adopted in the battery cell production system to drive the cutting assembly to move, the problem of low response speed caused by the integral movement of the cutting device in the existing battery cell production system is solved, and the cutting precision of the cutting pole piece in the battery cell production system is improved.

Drawings

FIG. 1 is a schematic view of a cutting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cutting device according to another embodiment of the present invention;

FIG. 3 is an exploded view of a cutting device according to another embodiment of the present invention.

The reference numbers indicate:

100. cutting the assembly; 110. a material conveying channel; 120. a tool apron; 121. a slide hole; 122. a first slider; 130. a support assembly; 131. a support pillar;

200. a first mounting seat; 210. a connecting assembly; 211. a connecting shaft; 220. a first side plate; 221. a guide hole; 230. a second side plate; 231. a first slide rail; 240. a cavity;

300. a first drive assembly; 310. a first drive element; 320. a first movement mechanism; 321. a cam; 322. a top rod; 3221. connecting holes; 330. mounting a plate; 331. a guide post; 332. a second slide rail; 333. a second slider; 340. a second mounting seat;

400. a second drive assembly; 410. a second drive element; 411. a mover; 420. a baffle plate; 430. a limiting plate; 440. a distance sensor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

In the production process, the material is required to be cut according to the production requirement. For example, in the production of lithium batteries, the pole pieces need to be cut. Researchers find that the current pole piece cutting device works according to the principle that a pole piece cutting distance is set, the transportation of the pole piece is stopped after a walking path in the pole piece conveying process reaches the set distance, and then the cutting device executes the cutting process. The pole piece needs to be suspended for many times to move in the cutting process, so that the cutting efficiency of the pole piece is not high. The cutting device adopting the chasing cutting adopts the scheme that the whole chasing cutting device moves, and the whole cutting device has large mass, so that the response speed of the chasing cutting is low, and the size of the cut pole piece has large errors. Therefore, researchers have proposed a cutting device to better solve the problems existing in the current cutting device, and further proposed a cell production system comprising the cutting device.

The cutting device mentioned in the application can be applied to the cutting process of lithium batteries, for example, "lamination type" cells of lithium batteries are stacked together at intervals by positive and negative plates and diaphragms, and are currently divided into "zigzag" lamination, "bag-making" lamination and "thermal compound" lamination, and the three lamination processes all need to make sheets. Continuous pole pieces are cut by the cutting device in the process of manufacturing the pole pieces. Of course, the application of the cutting device in the present invention is not limited to this, and for example, the cutting device can cut continuous materials in the manufacturing process.

Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating a cutting device according to an embodiment of the present invention, the cutting device according to an embodiment of the present invention includes: cutting assembly 100, at least one first mount 200, a first drive assembly 300, and a second drive assembly 400. Wherein, the cutting assembly 100 is used for cutting materials, such as pole pieces in the production and processing of lithium batteries; the first mounting seat 200 is used for supporting the cutting assembly 100, the first driving assembly 300 drives the first mounting seat 200 to move so that force can be applied to the cutting assembly 100, and then the cutting assembly 100 cuts the material in a closed mode; the second driving assembly 400 drives the cutting assembly 100 to move so as to realize the function of cutting the material, that is, the material does not need to be moved temporarily, and the second driving assembly 400 can drive the cutting assembly 100 to reach the moving speed same as that of the material, thereby completing the function of cutting the material. Through the cutting device in this embodiment, can improve the cutting efficiency of material, have faster response speed at the in-process of chasing after cutting simultaneously to improve the cutting accuracy of material.

Specifically, cutting assembly 100 is formed with a material conveying channel 110, cutting assembly 100 being used to cut material; at least one first mount 200, the first mount 200 for supporting the cutting assembly 100; the first driving assembly 300 can apply force to the first mounting base 200, and the first driving assembly 300 enables the first mounting base 200 to command the cutting assembly 100 to cut the material; the second driving assembly 400 drives the cutting assembly 100 to reciprocate along the conveying direction of the material conveying channel 110.

In this embodiment, material passes through the material transport path 110 of the cutting assembly 100, i.e. the cutting assembly 100 is not closed; when the material needs to be cut, the second driving assembly 400 drives the cutting assembly 100 to move along the conveying direction of the material conveying channel 110 and reach the same moving speed as the material; the first driving assembly 300 applies force to the first mounting base 200, so that the first mounting base 200 controls the cutting assembly 100 to cut the material, the cutting assembly 100 is closed, and the material conveying channel 110 of the cutting assembly 100 is closed; after cutting, the material conveying channel 110 of the cutting assembly 100 is opened again, the material continues to move along the material conveying channel 110 of the cutting assembly 100, and the second driving assembly 400 drives the cutting assembly 100 to return to the initial position. It should be noted that the closing of the cutting assembly 100 can be performed in a short time without substantially affecting the delivery of the material.

In the embodiment, the second driving assembly 400 drives the cutting assembly 100 to move to realize the cutting function, so that compared with the existing scheme of cutting materials due to the suspended material movement, the scheme of the embodiment avoids the suspended movement of the materials, and improves the cutting efficiency of the materials in a cutting mode; in addition, in the chasing and cutting process, the second driving assembly 400 is adopted to directly drive the cutting assembly 100 to move, so that the problem of low response speed caused by the overall movement of the existing cutting device is solved, and the cutting error of the material is reduced.

In order to facilitate the cutting component 100 to cut the material in a closed manner, a researcher finds that a movable design idea can be adopted for one tool apron 120 in the cutting component 100, and another tool apron 120 adopts a fixed design idea, so that the movable tool apron 120 is controlled to move, and the cutting function of the cutting component 100 is realized. Specifically, as shown in fig. 2, the cutting assembly 100 includes a pair of tool holders 120 and a pair of supporting members 130, wherein one tool holder 120 is connected to the supporting member 130, and the other tool holder 120 is slidably disposed on the supporting member 130 and connected to or abutted against the first mounting seat 200.

When cutting is needed, the first driving assembly 300 drives the first mounting seat 200 to move, because the first mounting seat 200 is connected or abutted to the tool apron 120 slidably disposed on the supporting assembly 130, for this reason, the first mounting seat 200 can control the tool apron 120 to move relative to the supporting assembly 130, and when the paired tool aprons 120 approach each other, the material conveying channel 110 of the cutting assembly 100 is closed, so that cutting of the material is realized.

The researchers found that if a single first mounting seat 200 is used to support the tool holder 120 slidably disposed on the supporting component 130, the tool holder 120 is easily stressed unevenly, for example, the tool holder 120 may incline, and therefore the cutting effect of the cutting component 100 may be affected. When the tool holder 120 is supported by the first mounting seats 200, although the tool holder 120 is more uniformly stressed by the first mounting seats 200, the number of the first mounting seats 200 is larger, and the number of the first driving assemblies 300 is increased. For this reason, the inventor has adopted a scheme of providing the first mounting seats 200 at both ends of the tool holder 120 slidably provided to the support member 130. Specifically, referring to fig. 2, the tool holder 120 slidably disposed on the supporting component 130 is provided with first mounting seats 200 at two ends thereof. The stability of the tool holder 120 can be ensured by arranging the first mounting seats 200 at both ends of the tool holder 120 slidably disposed on the supporting member 130.

Further, in order to solve the problem that one of the tool holders 120 in the cutting assembly 100 is fixed and the other tool holder 120 in the cutting assembly is moved, the inventor adopted the supporting assembly 130 to be the supporting column 131, and fixed one of the tool holders 120 by the supporting column 131, while the other tool holder 120 can slide relative to the supporting column 131. Specifically, referring to fig. 2 and 3, the supporting assembly 130 includes at least two sets of supporting pillars 131, wherein one of the tool holders 120 is fixed to the same end of each set of supporting pillars 131, and the other tool holder 120 is provided with a sliding hole 121 matched with each set of supporting pillars 131. When the first mounting seat 200 moves, the sliding hole 121 of the tool apron 120 slidably disposed on the supporting component 130 can be opposite to the axial direction of the supporting column 131, so that when the first mounting seat 200 is forced by the first driving component 300, the first mounting seat 200 can govern the tool apron 120 to move, so that the two tool aprons 120 are in a closed state, and the material is cut.

When the first driving assembly 300 drives the first mounting assembly to move, the researcher realizes the movement of the first mounting base 200 through the scheme of the prime mover and the kinematic pair. Specifically, the first driving assembly 300 includes a first driving element 310 and at least one first motion mechanism 320, wherein the first driving element 310 drives the first motion mechanism 320 to move, and the first motion mechanism 320 is connected to or abutted against the first mounting base 200. The first driving element 310 drives the first moving mechanism 320 to move, so that the first moving mechanism 320 can drive the first mounting base 200 to move, and when the first mounting base 200 controls the tool apron 120 slidably disposed on the supporting component 130 to move, the tool apron 120 can slide relative to the supporting column 131 in the supporting component 130, so that the two tool aprons 120 are closed, and the cutting component 100 can cut the material. The supporting column 131 may be a standard component such as a rolling guide column, and a spring may be disposed between the two tool holders 120 to increase the speed of separating the two tool holders 120.

The researchers found that when the number of the first motion mechanisms 320 is single, when a single first motion mechanism 320 governs movement of a single first mounting seat 200, wear of the first motion mechanism 320 is easily large, the service life is also reduced, and when a single first mounting seat 200 governs sliding arrangement on the knife seat 120 of the supporting component 130, the force applied to the knife seat 120 is uneven, which also affects the cutting effect of the cutting component 100. For this reason, the inventors designed the number of the first moving mechanisms 320 to be the same as the number of the first mount 200. That is, each first motion mechanism 320 can drive one first mounting seat 200 to move. Specifically, referring to fig. 3, the number of first motion mechanisms 320 is the same as that of the first mounting seats 200, and the first driving element 310 simultaneously drives the first motion mechanisms 320, which are the same as that of the first mounting seats 200, to move. The first driving element 310 drives the first motion mechanisms 320 with the same number as the first mounting seats 200 to move, so that the weight of the tool apron 120 slidably arranged on the supporting component 130 in the cutting component 100 can be better shared by the first motion mechanisms 320, the abrasion of the first motion mechanisms 320 is reduced, and the service life of the first motion mechanisms 320 is prolonged.

Researchers have found that when it is desired to effect the closing and separating of the pairs of blade holders 120 in the cutting assembly 100, the process can be simplified to a linear motion process that drives the blade holders 120. In the process of realizing the reciprocating movement, various linear motion mechanisms can be adopted, and in order to reduce the overall mass and the overall space occupation ratio of the cutting device, the inventor adopts the design idea of the cam 321 and the push rod 322. Specifically, referring to fig. 3, the first motion mechanism 320 includes a cam 321 and a push rod 322, wherein the first driving element 310 drives the cam 321 to rotate, one end of the push rod 322 is connected to or abutted against the cam 321, and the other end is connected to or abutted against the first mounting seat 200. When the cam 321 is driven by the first driving element 310 to rotate, due to the eccentric design principle of the cam 321, the position of the push rod 322 connected with or abutting against the cam 321 is changed relative to the first mounting seat 200, for example, in the period of rotation of the cam 321, the push rod 322 is close to and away from the first mounting seat 200, and the first mounting seat 200 is driven to move by being close to and away from two positions, so that the first mounting seat 200 dominates two tool seats 120 in the cutting assembly 100 to realize the cutting function.

In particular, the researchers have given two possible embodiments, exemplified by a set of pairs of seats 120, which are predefined as an upper seat and a lower seat 120, respectively.

In the first manner, the two ends of the upper tool post are respectively provided with the first mounting seats 200, that is, the upper tool post is movable, and the lower tool post is fixed, as shown in fig. 3, the tool post 120 far away from the first driving assembly 300 in fig. 3 can be understood as an upper tool post, and the tool post 120 near the first driving assembly 300 can be understood as a lower tool post. Initially, the cam 321 causes the push rod 322 to be at the farthest position, and the first mounting seat 200 causes the upper tool apron to be away from the lower tool apron, and the material conveying passage 110 of the cutting assembly 100 is opened. When the material needs to be cut, the first driving element 310 drives the first cam 321 to rotate, the cam 321 drives the push rod 322 to be changed from the farthest to the nearest, and then the first mounting seat 200 enables the upper tool apron to be close to the lower tool apron, so that the material is cut.

In the second mode, the first installation seats 200 are respectively disposed at two ends of the lower tool apron, and in contrast to the first mode, the upper tool apron is fixed, and the lower tool apron is movable. In the initial situation, the cam 321 makes the rod 322 in the nearest position, and the first mounting seat 200 makes the lower tool seat far away from the upper tool seat, and the material passage of the cutting assembly 100 is opened. When the material needs to be cut, the first driving element 310 drives the first cam 321 to rotate, the cam 321 drives the push rod 322 to be changed from the nearest state to the farthest state, and then the first mounting seat 200 enables the lower tool apron to be close to the upper tool apron, so that the material is cut.

It should be noted that the structure of each first motion mechanism 320 is the same, and the working principle thereof can refer to the present solution. In addition, the first driving element 310 may be a motor, which can drive the same number of first motion mechanisms 320 as the number of the first mounting seats 200 to move simultaneously through an output shaft, such as a coupling. Each of the first movement mechanisms 320 includes a cam 321 and a push rod 322.

Further, the researchers found that although the first motion mechanism 320 may achieve the cutting function when abutting against the first mounting seat 200, there may be a problem of unsynchronization of the motion between the first motion mechanism and the first mounting seat, for example, when the first driving element 310 drives the cam 321 to drive the push rod 322 to move from the farthest position to the nearest position, the moving speed of the push rod 322 may be greater than the falling speed of the first mounting seat 200, which may cause a collision between the first mounting seat 200 and the push rod 322, the cam 321, and the first mounting seat 200 may have a wear condition, which affects the service life thereof. For this purpose, the inventor adopts a design scheme that the first motion mechanism 320 is linked with the first mounting seat 200. Specifically, referring to fig. 2 and 3, the first mount 200 is provided with a connecting assembly 210, wherein the connecting assembly 210 fixes the carrier rod 322 to the first mount 200. The connecting assembly 210 connected with the top rod 322 is arranged on the first mounting seat 200, so that the top rod 322 moves synchronously with the first mounting seat 200 and the top rod 322 in the moving process.

Further, in the design of the connection assembly 210, the inventor adopted a shaft and bore fit scheme. Specifically, referring to fig. 3, the connecting assembly 210 includes a connecting shaft 211, the push rod 322 is provided with a connecting hole 3221, and the connecting shaft 211 is fixed to the connecting hole 3221 in a matching manner. The connecting shaft 211 is disposed on the first mounting seat 200, and the connecting shaft 211 is matched with the connecting hole 3221 of the top rod 322, so that the first mounting seat 200 and the top rod 322 move synchronously.

When arranging the positions of the first driving assembly 300 and the second driving assembly 400, researchers adopt a scheme of reducing the volume of the cutting device, so that the installation volume of the cutting device can be further reduced. Specifically, referring to fig. 3, the first driving assembly 300 is provided with a mounting plate 330, and the second driving assembly 400 is provided on the mounting plate 330. Providing the mounting plate 330 on the first drive assembly 300 to mount the second drive assembly 400 enables the cutting apparatus to be reduced in size. It can be understood that the second driving assembly 400 is stacked on the first driving assembly 300, and the space occupation ratio of the first driving assembly 300 and the second driving assembly 400 can be reduced. The mounting plate 330 may preferably be mounted on the side of the first drive assembly 300 facing the cutting assembly 100 with the second drive assembly 400 adjacent the cutting assembly 100 to facilitate connection of the second drive assembly 400 to the cutting assembly 100 and to drive movement of the cutting assembly 100.

During the operation of the cutting device, researchers can reduce the vibration of the cutting assembly 100 transmitting the operation to the first mounting base 200, and further affect the stability of the operation of the cutting device. To this end, the inventor reduces the transmission of the vibration force from the cutting assembly 100 to the first mounting block 200 by providing the first mounting block 200 with a cavity 240 configuration. Specifically, referring to fig. 3, the first mount 200 includes a first side plate 220 and a second side plate 230, wherein the first side plate 220 and the second side plate 230 together form a cavity 240 facing the two cutting assemblies 100. The cavity 240 structure formed by the first side plate 220 and the second side plate 230 can well reduce the vibration acting force transmitted by the cutting assembly 100 to the first mounting seat 200, thereby ensuring the stability of the cutting device. In addition, the structure of the first mounting seat 200 provided with the cavity 240 can further reduce the weight of the first mounting seat 200, and thus can also reduce the driving force applied to the first mounting seat 200 by the first driving assembly 300.

The researchers found that when the first moving mechanism 320 in the first driving assembly 300 moves the first mounting seat 200, due to the installation accuracy error between the first moving mechanism 320 and the first mounting seat 200, the acting force exerted on the first mounting seat 200 by the first moving mechanism 320 may incline, thereby affecting the acting force that the first mounting seat 200 dominates the tool apron 120. In order to make the force applied to first mount 200 by first movement mechanism 320 in first drive assembly 300 ideal, positioning is achieved by guide post 331 for this purpose. Specifically, referring to fig. 3, the mounting plate 330 is provided with at least one guiding post 331, wherein the first side plate 220 of the first mounting seat 200 is provided with the same number of guiding holes 221 as the guiding posts 331, and the guiding posts 331 are matched with the guiding holes 221 in a one-to-one correspondence. That is, by providing the guide post 331 on the mounting plate 330, the first mounting seat 200 can be positioned in advance by the guide post 331, so that the force exerted by the first movement mechanism 320 on the first mounting seat 200 is in a desired position, thereby ensuring that the force of the first mounting seat 200 dominates the force of the tool holder 120.

Further, researchers have found that the single guide post 331 has limited guiding capability, and in addition, when the guide post 331 is directly mounted on the mounting plate 330, the force on the first mounting seat 200 may be transmitted to the mounting plate 330 through the guide post 331, thereby affecting the stability of the entire cutting device, and therefore, the researchers mount the guide post 331 through two hollow second mounting seats 340. Specifically, the mounting plate 330 is provided with two groups of guide posts 331, and the number of each group of guide posts 331 is at least one; the mounting plate 330 is further provided with second mounting seats 340, the number of which is the same as that of the first mounting seats 200, and the positions of the second mounting seats 340 correspond to one another, wherein the second mounting seats 340 are of hollow structures, and each second mounting seat 340 is provided with a group of guide posts 331. Can guarantee two first mount pads 200's mounted position stability through two sets of guide posts 331, in addition, because second mount pad 340 adopts hollow structure design, so can reduce the vibration effort transmission of two sets of guide posts 331 to first drive assembly 300, and then influence whole cutting device's stability.

When the second driving assembly 400 drives the cutting assembly 100 to move along the material conveying direction, in order to enable the second driving assembly 400 to catch up with the material conveying speed at a faster speed, researchers consider that the second driving element 410 directly drives the cutting assembly 100 to move. Specifically, referring to fig. 3, the second driving assembly 400 includes a second driving element 410, wherein the second driving element 410 is connected with the cutting assembly 100. When the material needs to be cut, the second driving element 410 of the second driving assembly 400 directly drives the cutting assembly 100 to move. Because the second driving assembly 400 directly drives the cutting assembly 100 to move, compared with a transmission scheme with a kinematic pair, the cutting device has a fast response speed when tracing materials.

Researchers have found that if the cutter base 120 slidably disposed on the supporting component 130 slides in an abutting manner with the first mounting base 200 during the process of realizing the chase cutting of the cutting component 100, the abrasion between the first mounting base 200 and the cutting component 100 is serious, and the moving speed of the cutting component 100 is also affected. For this purpose, the inventor uses a slide rail to connect the first mounting seat 200 and the tool seat 120 slidably disposed on the supporting assembly 130. Specifically, the second side plate 230 of the first mounting seat 200 is provided with a first slide rail 231 along the extending direction of the material, and the tool holder 120 slidably disposed on the supporting assembly 130 is provided with a first sliding block 122 engaged with the first slide rail 231. In this way, when the second driving element 410 drives the cutting assembly 100 to work, the cutting assembly 100 can move relative to the first slide rail 231 on the first mounting seat 200 through the first slider 122, so that the abrasion between the cutting assembly 100 and the first mounting seat 200 is reduced, and the moving speed of the cutting assembly 100 is also ensured.

Further, in order to ensure a faster moving speed of the second driving element 410, it is possible to make it identical to the moving speed of the material in a shorter time. For this purpose, the second driving element 410 is a linear motor, wherein a mover 411 of the linear motor is connected to one of the tool holders 120. Linear electric motor has a faster moving speed, is connected with blade holder 120 through linear electric motor's active cell 411, can drive cutting assembly 100 through linear electric motor more fast and remove to realize cutting device's the function of following up to cut.

The researchers found that, in the process of the secondary driving element 410 chasing, if there is no limit protection for the secondary driving element 410, the secondary driving element 410 may drive the cutting assembly 100 to fly out, which has a certain safety hazard. For this reason, the distance that the second driving member 410 moves needs to be limited. Specifically, referring to fig. 3, the mover 411 of the linear motor is provided with a baffle 420, wherein two sides of the mounting plate 330 are respectively provided with at least one limiting plate 430, the limiting plates 430 are distributed along the conveying direction of the material conveying channel 110 and jointly form a limiting area, and the baffle 420 is governed by the mover 411 to reciprocate in the limiting area. Thus, when the mover 411 of the linear motor moves, the limiting plate 430 can limit the moving range of the mover 411, thereby avoiding the problem that the second driving element 410 may drive the cutting assembly 100 to fly out.

In the process of realizing the chase cutting of the cutting device, the moving distance of the second driving element 410 needs to be sensed in real time, so as to adjust the moving speed of the second driving element 410. For this purpose, a corresponding distance sensor is provided to sense the displacement position of the second drive element 410 and to adjust its displacement speed. Specifically, referring to fig. 3, the mounting plate 330 is provided with a plurality of distance sensors 440 distributed along the conveying direction of the material conveying passage 110, wherein the baffle 420 of the mover 411 is provided with a detection block, and the distance sensors 440 can sense the position of the detection block. By providing the plurality of distance sensors 440, the moving speed of the linear motor can be adjusted by sensing the position of the detection block on the shutter 420 of the mover 411 during the chase.

The researchers found that when the second driving element 410 drives the cutting assembly 100 to move, the contact area between the mover 411 of the second driving element 410 and the tool holder 120 of the cutting assembly 100 is small, which affects the smoothness of the movement of the cutting assembly 100 driven by the second driving element 410. To this end, the inventor has provided a slider structure to support the cutting assembly 100, and the slider structure is also convenient for moving the cutting assembly 100. Specifically, referring to fig. 3, the mounting plate 330 is further provided with at least one second slide rail 332 along the conveying direction of the material conveying path 110 and a second slide block 333 engaged with the second slide rail 332, wherein the second slide block 333 is connected with the cutting assembly 100. That is, the cutting assembly 100 can be carried by the second slider 333, thereby ensuring smoothness in movement of the cutting assembly 100. Preferably, a set of the second slide rail 332 and the second slider 333 are respectively disposed at both sides of the second driving element 410.

In the cutting device of the present invention, the pair of knife bases 120 in the cutting assembly 100 is separated in the initial condition, and the material moves from the material conveying channel 110 in the cutting assembly 100. When the material needs to be cut, the second driving element 410 in the second driving assembly 400 works, that is, the linear motor drives the cutting assembly 100 to move through its own mover 411. In the moving process of the linear motor, the distance sensor detects a detection block on the baffle 420 of the mover 411, and the motion speed of the linear motor can be adjusted according to the position of the detection block sensed by the distance sensor 440. When the speed of the linear motor driving the cutting assembly 100 to move is the same as the speed of conveying the material, at this time, the first driving element 310 in the first driving assembly 300 drives the first moving mechanism 320 to work, that is, the motor drives the cam 321 to rotate, so that the cam 321 drives the push rod 322 to do linear motion. The push rod 322 drives the first mounting seat 200 to move through the connecting shaft 211 in the connecting assembly 210, and the knife holder 120 slidably disposed on the supporting assembly 130 is driven to move through the movement of the first mounting seat 200, so that the paired knife holders 120 in the cutting assembly 100 are in a closed state, at this time, the material conveying channel 110 is closed, and the material is cut off. Then the motor drives the cam 321 to rotate again, so that the push rod 322 drives the first mounting seat 200 to move again through the connecting shaft 211, the paired tool holders 120 in the cutting assembly 100 are in a separated state, at this time, the material conveying channel 110 is opened, and the material continues to move along the material conveying channel 110. The linear motor drives the cutting assembly 100 to move and return to the initial position through the rotor 411 again, so that the material is cut at one time.

The invention further provides a battery cell production system which comprises the cutting device. In the production and processing of lithium batteries, for example, continuous pole pieces need to be cut off, the cutting efficiency of the pole pieces can be ensured by arranging the device in a battery cell production system, and meanwhile, the response rate of the cutting device during the follow-up cutting movement can be improved. Specifically, in the cell production system, the continuous pole piece passes through the material conveying channel 110 of the cutting device, and when the pole piece needs to be cut, the second driving component 400 of the cutting device moves to reach the same speed as the pole piece conveying speed, and it can be understood that the second driving element 410 makes the cutting component 100 and the pole piece in a relatively static state. The first drive assembly 300 then commands the cutting assembly 100 to close, at which time the material feed path 110 of the cutting assembly 100 is closed and the pole pieces are cut. The first drive assembly 300 may again direct the blade holder 120 of the cutting assembly 100 to switch from closed to open, at which point the material transport path 110 is again open, the pole piece continues to move from the material transport path 110 of the cutting assembly 100, and the second drive assembly 400 returns the cutting assembly 100 to the initial position again. The cutting device is arranged in the battery cell production system, so that the problem of low efficiency caused by the fact that the existing cutting device cuts pole pieces by suspending the conveying of the pole pieces is solved; meanwhile, the cutting device has higher response speed than that of the existing cutting device in the process of realizing the chasing and cutting of the pole piece, so that the cutting precision of the pole piece is improved.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (20)

1. A cutting device, comprising:

the cutting assembly is provided with a material conveying channel and is used for cutting materials;

at least one first mount supporting the cutting assembly;

the first driving assembly can apply force to the first mounting seat, so that the first mounting seat controls the cutting assembly to cut materials;

and the second driving assembly drives the cutting assembly to reciprocate along the conveying direction of the material conveying channel.

2. The cutting device as claimed in claim 1, wherein the cutting assembly comprises a pair of blade holders and a support assembly, one blade holder being connected to the support assembly, and the other blade holder being slidably disposed on the support assembly and being connected to or abutting the first mounting seat.

3. The cutting device as claimed in claim 2, wherein the first mounting seats are provided at both ends of the knife holder slidably provided to the support assembly.

4. The cutting device as claimed in claim 2, wherein the support assembly includes at least two sets of support posts, one of the knife blocks being fixed to the same end of each set of support posts, the other knife block being provided with a slide hole for engaging with each set of support posts.

5. The cutting device as claimed in claim 3, wherein the first drive assembly comprises a first drive element and at least one first movement mechanism, the first drive element driving the first movement mechanism to move, the first movement mechanism being connected to or abutting the first mounting block.

6. The cutting device as claimed in claim 5, wherein the number of the first movement mechanisms is the same as the number of the first mounting seats, and the first drive element simultaneously drives the same number of the first movement mechanisms as the number of the first mounting seats to move.

7. The cutting device as claimed in claim 6, wherein the first movement mechanism includes a cam and a ram, the first drive element driving the cam to rotate, the ram being connected or abutting at one end to the cam and at the other end to the first mount.

8. The cutting apparatus as claimed in claim 7, wherein the first mounting block is provided with a connecting assembly which secures the ram to the first mounting block.

9. The cutting device as claimed in claim 8, wherein the connecting assembly comprises a connecting shaft, the push rod is provided with a connecting hole, and the connecting shaft is matched and fixed with the connecting hole.

10. The cutting device as claimed in claim 3, wherein the first drive assembly is provided with a mounting plate and the second drive assembly is provided on the mounting plate.

11. The cutting device of claim 10, wherein the first mount includes a first side plate and a second side plate that together form a cavity facing the cutting assembly.

12. The cutting apparatus as claimed in claim 11, wherein the mounting plate is provided with at least one guide post, the first side plate is provided with the same number of guide holes as the guide posts, and the guide posts are fitted with the guide holes in a one-to-one correspondence.

13. The cutting device as claimed in claim 12, wherein the mounting plate is provided with two sets of the guide posts, each set being at least one in number;

still set up on the mounting panel with the same and position one-to-one's of quantity of first mount pad second mount pad, the second mount pad is hollow structure, every set up a set of on the second mount pad respectively the guide post.

14. The cutting device of claim 11, wherein the second drive assembly includes a second drive element, the second drive element being coupled to the cutting assembly.

15. The cutting device as claimed in claim 14, wherein the second side plate is provided with a first slide rail extending in the conveying direction of the material conveying channel, and the knife holder slidably provided on the support assembly is provided with a first slide block cooperating with the first slide rail.

16. The cutting device as claimed in claim 15, wherein the second drive element is a linear motor, the rotor of which is connected to one of the tool holders.

17. The cutting device as claimed in claim 16, wherein the rotor is provided with a baffle, and two sides of the mounting plate are respectively provided with at least one limiting plate, the limiting plates are distributed along the conveying direction of the material conveying channel and jointly form a limiting area, and the baffle is guided by the rotor to reciprocate in the limiting area.

18. The cutting device as claimed in claim 17, wherein the mounting plate is provided with a plurality of distance sensors distributed along a conveying direction of the material conveying path, and the blocking plate is provided with a detection block, the distance sensors being capable of sensing a position of the detection block.

19. The cutting apparatus as claimed in claim 17, wherein the mounting plate is further provided with at least a second slide rail along the conveying direction of the material conveying path and a second slide block cooperating with the second slide rail, the second slide block being connected to the cutting assembly.

20. A cell production system, characterized by comprising the cutting device of any one of claims 1 to 19.

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