KR20230123329A - Cutting apparatus - Google Patents

Abstract

A cutting device is disclosed. This embodiment is provided with a jamming prevention unit for stable cutting of the object to be cut, so that stability according to cutting is constantly maintained.

Description

Cutting apparatus {Cutting apparatus}

The present invention relates to a cutting device for cutting a wide-width cutting object, and more particularly, to a cutting device for promoting stable cutting by solving problems caused by jamming when a cutting object is cut to a narrow width.

In general, as technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing. Among the secondary batteries, a lot of research has been mainly conducted on lithium secondary batteries having high energy density and discharge voltage, and they have been commercialized and widely used.

Depending on the shape of the battery case, the secondary battery is classified into a cylindrical battery and a prismatic battery in which the electrode assembly is embedded in a cylindrical or prismatic metal can, and a pouch-type battery in which the electrode assembly is embedded in a pouch-type case of an aluminum laminate sheet do.

The electrode assembly is a power generating device capable of charging and discharging with a laminated structure of an anode/separator/cathode, and includes a jelly-roll type in which a separator is interposed between a long sheet-type anode and a cathode coated with an active material, and a plurality of electrodes having a predetermined size. It is classified as a stack type in which an anode and a cathode are sequentially stacked in a state where the separator is interposed.

Among them, the jelly-roll type electrode assembly has advantages of being easy to manufacture and having a high energy density per weight. The manufacturing process of the jelly-roll type electrode assembly includes a process of inserting a winding core into an end of the laminate of the positive electrode/separator/negative electrode, winding the core into a cylindrical shape, and then removing the core.

Electrode assemblies having such characteristics are manufactured to a length having a predetermined width before being used in actual products, and then cut to a desired width through a separate cutting machine.

The cutting machine was capable of stable cutting when cutting to a length having a width of tens of millimeters (for example, 50 mm) or more, but when the width and length were shortened to several millimeters, it was cut during the cutting process or moved to the outside of the cutting machine. In the process of moving, a problem of entanglement occurred.

For example, in the process of cutting into a narrow width after the electrode assembly is introduced from the cutting machine, the phenomenon of being caught inside the cutting machine often occurs, so that the operator stops the operation, removes the narrow electrode assembly stuck in the cutting machine, and then restarts the operation. A problem arose and a solution was needed.

Korean Patent Publication No. 10-2006-0052813

The present embodiments are intended to provide a cutting device that solves the phenomenon of being caught inside the first and second cutting parts when the electrode assembly is cut into a narrow width.

The cutting device according to the present embodiment includes a plurality of first cutting parts spaced apart from each other along an axial direction inside a case in order to cut a cutting object having a wide width into a narrow width, and the first cutting part A first cutting unit including an anti-jamming unit wound around and provided to prevent jamming of the object to be cut; And a second cutting part facing the first cutting part and located in the case, and having a plurality of second cutting parts spaced apart from each other along the axial direction to cut the object to be cut together with the first cutting part. .

The first cutting part is provided on the first shaft extending from the outside to the inside of the case, and the first cutting part has a relatively larger diameter than the diameter of the first shaft, and A first spacer inserted in the axial direction; a second spacer inserted in the axial direction of the first shaft, positioned between the first spacers, and around which the jamming prevention part is wound; first knives axially inserted into the first shaft and provided on both left and right sides of the second spacer; and an elastic member that is axially inserted into the first shaft and supports the jamming prevention unit in an axial direction by supporting the first knife.

The first spacer and the second spacer are alternately inserted into the first shaft.

The jamming prevention part is maintained at the same height as the position corresponding to the radially outer end of the first knife.

The jamming prevention part is selectively used with either a foam or a sponge.

The jamming preventing part may include a first jamming preventing part wound in the circumferential direction of the second spacer; and a second jamming member integrally formed with the first jamming preventing part, wound in a circumferential direction of the second spacer, and formed of a material different from that of the first jamming preventing part.

The second jamming preventing part selectively uses any one of foam or sponge having a relatively higher density than the first jamming preventing part.

The elastic member may include a body portion formed in a ring shape; A disc spring having a plurality of through holes along the circumferential direction of the body is used, and is disposed symmetrically on the left and right sides of the axial direction with respect to the first spacer.

In the first spacer, stepped seating portions are formed toward the inside of the first spacer from both sides of the front and rear sides so that the elastic member is inserted in the axial direction.

The elastic member is inserted into the seating portion, and the first knife is inserted outside the elastic member.

The second cutting part is provided on the second shaft extending from the outside to the inside of the case, and the second cutting part has a relatively larger diameter than the diameter of the second shaft. a third spacer inserted in the axial direction and disposed facing the first spacer; a fourth spacer inserted in the axial direction of the second shaft, positioned between the third spacers, and facing the second spacer; A second knife is inserted into the second shaft and provided on both left and right sides of the third spacer.

The jamming prevention part is characterized in that the width direction length (L1) is the same as the width direction length (L2) in a state in which the third spacer and the second knife are in close contact.

In the present embodiments, when the object to be cut is cut, a jamming phenomenon is prevented inside the first and second cutting parts, so that stable cutting can be performed.

The present embodiments enable easy installation of the jamming prevention unit, so that the operator can conveniently use it.

In the present embodiments, the state in which the jamming prevention unit is supported in the axial direction of the first cutting unit can be constantly maintained, so that stability according to cutting of the object to be cut is maintained.

1 is an operating state diagram of a cutting device according to this embodiment.
Figure 2 is a front view of the cutting device according to the present embodiment.
Figure 3 is a longitudinal sectional view of Figure 2;
4 is an exploded perspective view of a first cutting unit according to this embodiment;
5 is an exploded perspective view of a second cutting unit according to the present embodiment;
6 to 8 are views showing a state in which the jamming protection unit is installed according to the present embodiment.
9 is an enlarged cross-sectional view of first and second cutting parts according to the present embodiment.
10 to 11 are cross-sectional views illustrating an anti-jamming unit according to another embodiment.

Advantages and features of the present disclosure, and methods of achieving them, will become clear with reference to embodiments described below in detail in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments make the disclosure of the present disclosure complete, and common knowledge in the art to which the present disclosure belongs. It is provided to fully inform the person who has the scope of the disclosure, and the disclosure is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

A component is said to be "connected to" or "coupled to" another component when it is directly connected or coupled to the other component or through another component in between. include all cases. On the other hand, when one component is referred to as “directly connected to” or “directly coupled to” another component, it indicates that another component is not intervened. “And/or” includes each and every combination of one or more of the recited items.

Terminology used herein is for describing embodiments and is not intended to limit the present disclosure. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. As used in the specification, "comprises." and/or “comprising” does not preclude the presence or addition of one or more other elements, steps, operations and/or elements.

Although first, second, etc. are used to describe various constituent elements, these constituent elements are not limited by these terms, of course. These terms are only used to distinguish one component from another.

For reference, FIG. 1 is an operating state diagram of a cutting device according to this embodiment, FIG. 2 is a front view of the cutting device according to this embodiment, FIG. 3 is a longitudinal sectional view of FIG. 2, and FIG. 4 is a view of the cutting device according to this embodiment. Figure 5 is an exploded perspective view of the second cutting unit according to this embodiment, Figures 6 to 8 are views showing a state in which the jamming protection unit is installed according to this embodiment, Figure 9 is an enlarged cross-sectional view of the first and second cutting portions according to the present embodiment.

1 to 9, the cutting device 1 according to the present embodiment is a device used when cutting a wide-width cutting object 2 into a narrow width. As an example, the cutting object 2 will be described later. After being cut into a narrow width by the first and second cutting units 100 and 200 to be cut, an electrode assembly maintaining a width of several tens of mm is used.

When the object to be cut 2 passes through the first and second cutting units 100 and 200 to be described later, it may be cut into a narrow width having a width of 3 to 4 mm. This embodiment is equipped with a jamming prevention part 120 to be described later, so that the cutting object 2 is prevented from being caught between the first cutting part 100 and the second cutting part 200 during the process of being cut into a narrow width. As a result, it is possible to promote stability improvement and quality stability according to cutting at the same time.

To this end, the present embodiment is a plurality of first cutting parts 110 spaced apart from each other along the axial direction from the inside of the case 10 in order to cut the cutting object 2 having a wide width into a narrow width. ) And the first cutting part 100 including a jamming prevention part 120 wound around the first cutting part 110 and provided to prevent the cutting object 2 from being caught, and the first cutting part ( 100) and located in the case 10, a plurality of second cutting parts 210 spaced apart from each other along the axial direction to cut the cutting object 2 together with the first cutting part 110 It includes the second cutting part 200 provided.

In the case 10, the first and second cutting parts 100 and 200 are arranged to face each other vertically and horizontally as shown in the drawing, and between the first cutting part 100 and the second cutting part 200 The cutting object 2 is introduced.

The case 10 has a rectangular parallelepiped shape, and an eye bolt 11 is installed on the upper side to facilitate movement with heavy equipment, and first bearings B1 are installed at both left and right ends of the first cutting part 100, respectively. , Second bearings B2 are installed at both left and right ends of the second cutting part 200.

The first and second bearings B1 and B2 are inserted into the left and right side walls of the drawing reference case 10 and promote stable rotation of the first and second cutting parts 100 and 200 .

A first support ring 111 is inserted into the first shaft 112 at a position spaced apart from both ends of the first cut portion 110 by a predetermined length.

The relative rotation of the first shaft 112 in the axial direction is stably maintained by the first bearing B1, and the first cutting part 110 is installed and the interval is constant by the first support ring 111. maintain.

The first cutting part 100 is provided with the first shaft 112 extending from the outside of the case 10 toward the inside.

The first cutting part 110 includes a first spacer 114 having a relatively larger diameter than the diameter of the first shaft 112 and inserted in the axial direction of the first shaft 112, and the first shaft ( 112), is positioned between the first spacer 114, and is axially inserted into the second spacer 116 on which the jamming prevention part 120 is wound, and the first shaft 112, The first knife 118 provided on both left and right sides of the second spacer 116 and the first shaft 112 are inserted into the axis and the first knife 118 is supported to prevent the jamming part 120. It includes an elastic member 119 for supporting in the direction.

In the first cutting part 110, a plurality of first spacers 114 and second spacers 116 are alternately inserted along the axial direction of the first shaft 112 and are arranged at regular intervals.

As the jamming preventing part 120, any one of foam or sponge is selectively used. The jamming prevention part 120 is maintained inserted in the circumferential direction of the second spacer 116 .

In the second spacer 116, an insertion groove 116a is formed in the circumferential direction at a predetermined depth before the jamming prevention part 120 is inserted, but when the jamming prevention part 120 is inserted, as shown in the drawing As shown, the state in which the insertion groove 116a is filled is maintained.

Since the insertion groove 116a provides a space into which the cut object 2 can be introduced while cutting, in this embodiment, the jamming prevention unit 120 is used to prevent the cutting object 2 from being caught. will prevent

The jamming prevention unit 120 is a first knife 118 and a second knife 216 to be described later when the operator pushes the aforementioned foam or sponge between the first cutting unit 100 and the second cutting unit 200. ), and is inserted into the insertion groove 116a at the same time as cutting.

The jamming prevention part 120, except for the part inserted into the insertion groove 116a, is discharged to the outside of the case 10, and after all is discharged, as shown in the drawing, the second spacer 116 The rolled state is maintained.

Even if the jamming prevention part 120 is detached from the second spacer 116 during use or deformed due to long-term use, after removing all the jamming prevention parts 120 remaining in the insertion groove 116a, Reinstallation is easy by reinserting the foam or sponge.

Therefore, the operator's downtime for the cutting device is kept to a minimum, and it is possible to operate it again, thereby reducing the work time according to reinstallation, thereby improving the operator's work convenience.

The jamming prevention part 120 is provided only in the first cutting part 110 and is not provided in the second cutting part 210 .

The first spacer 114 is maintained at a constant interval because the second spacer 116 is alternately inserted into the first shaft 112. A first knife 118 and an elastic member 119, which will be described later, are inserted into the first spacer 114.

In the first spacer 114, stepped seating portions 114a are formed toward the inside of the first spacer 114 from both the front and rear sides so that the elastic member 119 is inserted in the axial direction.

The seating portion 114a is formed as shown in the drawing, but may be changed into other shapes and is not limited to the form shown in the drawing.

In the seating portion 114a, the elastic member 119 is inserted into the front and rear surfaces of the first spacer 114, respectively, based on the cross-sectional view, and the first knife 118 is provided outside the elastic member 119. inserted Here, the front side corresponds to the left side of the first spacer 114 based on the cross-sectional view, and the rear side corresponds to the right side.

The elastic member 119 includes a ring-shaped body portion 119a and a dish spring having a plurality of through holes 119b formed along the circumferential direction of the body portion 119a.

Since the elastic member 119 presses the first knife 118 from the first spacer 114 with a predetermined elasticity, the first knife 118 inserted along the first shaft 112 is brought into close contact with the first knife 118. It is possible to maintain a stable bonding state by inducing a pressing force.

The elastic members 119 are disposed symmetrically on the left and right sides of the axial direction with respect to the first spacer 114, so that the pressing force pressing the first knife 118 is applied to the left and right sides of the first spacer 114. remains constant on the right.

In this case, the first knife 118 is positioned in the correct position without moving or malfunctioning during use, thereby improving stability during cutting.

In the second cutting part 200 according to the present embodiment, the second cutting part 210 is provided on the second shaft 211 extending from the outside of the case 10 toward the inside.

The second cutting part 210 has a relatively larger diameter than the diameter of the second shaft 211, is inserted in the axial direction of the second shaft 211, and is disposed facing the first spacer 114. A fourth spacer 214 inserted in the axial direction of the third spacer 212 and the second shaft 211, positioned between the third spacer 212 and facing the second spacer 116 ) and a second knife 216 provided on both left and right sides of the third spacer 212 and inserted into the second shaft 211.

Unlike the second spacer 116, the fourth spacer 214 maintains the same height as the second knife 216, so the jamming prevention member 120 is not installed.

When the jamming prevention part 120 is wound around the insertion groove 116a, the same height as the position corresponding to the radially outer end of the first knife 118 is maintained.

That is, a space in which a jamming may occur after the cutting object 2 is cut is not formed between the first knife 118 and the jamming prevention part 120, so that the first and third spacers 114 and 212 are connected to each other. Accurate cutting can be performed not only in the facing area but also in the area where the second spacer 116 and the fourth spacer 214 face each other.

Referring to FIG. 10, the jamming prevention unit 120 according to the present embodiment includes a first jamming prevention unit 122 wound in the radial direction of the second spacer 116, unlike the above-described embodiment, and the first jamming prevention unit 122. 1 integrally formed with the jamming prevention part 122, wound in the circumferential direction of the second spacer 116, and includes a second jamming prevention part 124 formed of a material different from that of the first jamming prevention part 122 .

The first and second anti-jamming parts 122 and 124 are made of different materials in advance. For example, the first anti-jamming part 122 is made of foam or sponge, and the second anti-jamming part 122 is used. (124) can be used hard rubber.

In this way, when foam or sponge is used as the first jamming prevention part 122 and the second jamming prevention part 124 is made of rubber, the deformation of the second jamming prevention part 124 is minimized to improve durability. be advantageous

Referring to the attached FIG. 11 , this embodiment may be configured with different densities other than heterogeneous materials unlike the above-described embodiment.

In this case, the jamming preventing part 120 is composed of any one of a foam or a sponge in which the second jamming preventing part 124 has a relatively higher density than the first jamming preventing part 122 based on a cross-sectional view.

When the jamming prevention part 120 is configured as described above, the strength of the second jamming prevention part 124 constituting the outermost part of the jamming prevention part 120 is improved, and the replacement cycle due to deformation is increased, so that the durability according to cutting is improved. can be increased

In particular, even when the second jamming prevention unit 124 has a higher density than the first jamming prevention unit 122 and continuous cutting of the cutting object 2 occurs, surface damage can be minimized.

The jamming prevention part 120 has a length L1 in the width direction equal to a length L2 in the width direction when the fourth spacer 214 and the second knife 216 are in close contact with each other. In this case, a space into which the object to be cut 2 can be introduced may not be formed, thereby preventing problems caused by jamming.

In the above, one embodiment of the present invention has been described, but those skilled in the art can add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. The present invention can be variously modified and changed by the like, and this will also be said to be included within the scope of the present invention.

2: Object to be cut
10 : Case
100: first cutting part
110: first cutting part
112: first shaft
114: first spacer
116: second spacer
118: first knife
119: elastic member
120: jamming prevention unit
200: second cutting part
210: second cutting part
211: second shaft
212: third spacer
214: 4th spacer
216: second knife

Claims (5)

In order to cut a cutting object having a wide width into a narrow width, a plurality of first cutting parts spaced apart from each other along the axial direction from the inside of the case, and the first cutting part wound around the first cutting part to fit the cutting object A first cutting unit including an anti-jamming unit provided to prevent jamming; and
Cutting including a second cutting part facing the first cutting part and located in the case and having a plurality of second cutting parts spaced apart from each other along an axial direction to cut the object to be cut together with the first cutting part. Device. According to claim 1,
The first cutting part is provided on a first shaft extending from the outside to the inside of the case,
The first cutting part may include a first spacer having a relatively larger diameter than the diameter of the first shaft and inserted in the axial direction of the first shaft;
a second spacer inserted in the axial direction of the first shaft, positioned between the first spacers, and around which the jamming prevention part is wound;
first knives axially inserted into the first shaft and provided on both left and right sides of the second spacer;
A cutting device including an elastic member axially inserted into the first shaft and supporting the first knife in an axial direction to prevent the jamming. According to claim 2,
The cutting device is maintained at the same height as the position corresponding to the radially outer end of the first knife. According to claim 2,
The second cutting part is provided with a second shaft extending from the outside to the inside of the case, and the second cutting part is provided.
The second cutting part has a relatively larger diameter than the diameter of the second shaft, and is inserted in the axial direction of the second shaft, and is disposed facing the first spacer; a third spacer;
a fourth spacer inserted in the axial direction of the second shaft, positioned between the third spacers, and facing the second spacer;
A cutting device comprising a second knife axially inserted into the second shaft and provided on both left and right sides of the third spacer. According to claim 4,
Cutting device, characterized in that the jamming prevention portion width direction length (L1) is equal to the width direction length (L2) of the third spacer and the second knife in close contact.

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