KR20230036729A - Removal device of crease about a web - Google Patents

Abstract

The present invention relates to a web wrinkle removal device, comprising: a roller unit; and a control unit connected to one end of the roller unit. The web wrinkle removal device includes: a shaft connected through the inside of the roller unit and the control unit; a first bearing positioned inside the control unit and in contact with an outer circumferential surface of the shaft; and a handle coupled to one end of the shaft, wherein the shaft comprises a bending shaft bent in an arc shape in a direction perpendicular to the longitudinal direction, and a fixed shaft of a straight line shape. According to the present invention, a user can easily directly control the degree of curvature of a shaft in response to the amount and direction of wrinkles formed on a web-type separator or electrode to remove wrinkles.

Description

Web wrinkle removal device {REMOVAL DEVICE OF CREASE ABOUT A WEB}

The present invention relates to a web wrinkle removal device. Specifically, the present invention relates to a device in which a user can directly adjust the degree of bending of a shaft to remove wrinkles generated on a traveling web.

As the range in which secondary batteries are used gradually expands from small mobile electronic devices to mid-to-large sized electric vehicles (EV) and energy storage systems (ESS), high capacity, high energy density and long lifespan Research and development of lithium secondary batteries are continuing as a task. In addition, in order to mass-supply secondary batteries capable of repeated charging and discharging in various fields as a means of rapidly replacing existing fossil energy sources, various methods for securing mass productivity in the manufacturing process are being studied.

In particular, in the process of manufacturing electrodes and separators including positive and negative electrodes, which are essential components of secondary batteries, it is very important to secure mass productivity and maintain uniform quality even in mass production. ) form, it has been pointed out that since the distance to be moved by traveling through the roller is relatively long, wrinkles are easily formed locally on one surface of the separator or electrode.

Accordingly, as a method for preventing the formation of wrinkles, conventionally, a spread roller is applied to form a spiral groove in the left and right directions from the center of the outer circumferential surface of the roller to prevent wrinkles formed on the surface of the separator or electrode. A method of removing it by diffusing it from the inside to the outside has been used.

However, since the above method has already fixed the size at which it can be removed in response to wrinkles on the surface of the separator or electrode, wrinkles that can be flexibly changed depending on the quality of the separator or electrode or the state of the transfer line There was a problem in that it was difficult to respond every moment to the amount and direction of wrinkles. After all, this has been pointed out as one of the causes of deterioration in the quality of the separator or electrode itself as well as the fairness of subsequent processes, and research and development to prevent this is required.

Japanese Registered Utility Model Publication No. 1993-030196

In order to solve the above problems, the present invention is a web wrinkle removal device that can remove wrinkles by directly controlling the degree of curvature of a shaft in response to the amount and direction of wrinkles formed on a web-type separator or electrode. want to provide

According to a first aspect of the present invention,

roller unit; And a control unit connected to one end of the roller unit; In the web wrinkle removal device comprising a shaft connected through the inside of the roller unit and the control unit; a first bearing positioned inside the control unit and in contact with an outer circumferential surface of the shaft; and a handle coupled to one end of the shaft, wherein the shaft is bent in an arc shape in a direction perpendicular to the longitudinal direction; a bending shaft; It provides a web wrinkle removal device comprising a; and a fixed shaft of a straight line.

In one embodiment of the present invention, the handle may be a means for controlling the degree of bending of the bending shaft.

In one embodiment of the present invention, the handle is a rotary handle having the shaft as a central axis, and the degree of bending of the bending shaft may be controlled according to the rotation amount and rotation direction of the rotary handle.

In one embodiment of the present invention, one end of the bending shaft is inserted into the hollow portion of the handle, the outer circumferential surface of the bending shaft; and an inner circumferential surface located in the hollow of the handle; each includes a different one of a screw bone and a screw thread, and the bending shaft and the handle may be coupled through fastening of the screw bone and the screw thread.

In one embodiment of the present invention, the outer circumferential surface of the bending shaft may include a screw thread, and the inner circumferential surface located in the hollow portion of the handle may include a screw bone.

In one embodiment of the present invention, the fixing shaft includes a flange at one end, and the flange may be fixed to the fitting groove of the handle.

In one embodiment of the present invention, the first bearing may be a thrust ball bearing.

In one embodiment of the present invention, the bending shaft may be a shaft bent in an arc shape so that the central point of the shaft is 0.1 to 5 mm apart from the central axis.

In one embodiment of the present invention, the roller unit two or more rollers arranged in a line relative to the longitudinal direction; and a second bearing embedded inside each of the rollers.

Web wrinkle removal device according to the present invention, the roller part, which can be directly in contact with the web and curved, draws an arc shape outward with the shaft as the central axis and rotates in a bent state, thereby removing wrinkles formed on the web has the effect of

In addition, the web wrinkle removal device according to the present invention is independent of the size of wrinkles formed on the running web in that the user can directly and easily control the bending degree and position of the shaft for removing wrinkles on the web. It has the effect of flexibly responding to the occurrence of wrinkles.

In addition, the web wrinkle removal device according to the present invention prevents a mismatch phenomenon having a difference in the amount of overlap between the ends of the upper and lower separators in a web-type separator or electrode, and There is an effect of shortening the adjustment time required to remove the formed wrinkles.

Figure 1 shows (a) a front view, (b) a right side view and (c) a cross-sectional view of a web wrinkle removal device as an embodiment of the present invention.
Figure 2 shows (a) a perspective view and (b) a front view of a specific example in which the web wrinkle removal device of the present invention is applied to the process.

Preferred examples are presented to aid understanding of the present invention, but the following examples are provided to more easily understand the present invention, but the present invention is not limited thereto.

In addition, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description, and terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. may be, and the definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

As a result of experiments, the inventors of the present invention found that wrinkles are easily formed on the web in the traveling process for transferring separators or electrodes during the conventional secondary battery manufacturing process, and the amount of wrinkles generated depending on the quality of the separator or electrode or the state of the transfer line and the direction of the wrinkles In view of the large fluctuation, there was a problem that it was difficult to respond to various cases every time with the existing web wrinkle removal device capable of removing only wrinkles of a certain size fixed by the device.

In order to solve the above problems, the present inventors directly adjust the degree of bending of the shaft in the web wrinkle removal device through easy manipulation by the user, even if wrinkles are generated in various sizes and directions, the user can flexibly respond to this. A web wrinkle removal device capable of reducing web wrinkle adjustment time while removing wrinkles has been invented.

In one embodiment of the present invention, as shown in Figure 1, the web wrinkle removal device includes a roller unit 10; And an operating unit 20 connected to one end of the roller unit 10; In the web wrinkle removal device comprising a shaft 100 connected through the inside of the roller unit 10 and the operating unit 20; a first bearing 210 located inside the control unit 20 and contacting an outer circumferential surface of the shaft 100; and a handle 220 connected to one end of the shaft 100, wherein the shaft 100 is a bending shaft 110 bent in an arc shape in a direction perpendicular to the longitudinal direction. ; and a fixed shaft 120 of a straight line shape.

In this specification, a web may be defined as a substrate in a form in which wrinkles may occur during driving while continuously traveling on a roller, for example, a separator or electrode in the form of continuously traveling on a roller for transport. can be

In one embodiment of the present invention, as shown in Figure 1 (a), the web wrinkle removal device includes a roller unit 10; and a manipulation unit 20 connected to one end of the roller unit 10.

In one embodiment of the present invention, as shown in FIG. 2 (a), the outer circumferential surface of the roller 11 directly contacts and rotates the web 30 while conveying the web 30. As a configuration, specifically, it may correspond to a configuration in which direct contact is made with one surface of the separator or electrode and transported.

In one embodiment of the present invention, as shown in Fig. 1 (a), the roller unit 10 includes two or more rollers 11 arranged in a line based on the longitudinal direction; and second bearings 12 embedded inside each of the rollers 11. Specifically, the roller unit 10 may have a form in which a plurality of rollers 11 are connected, and a second bearing 12 exists inside each of the plurality of rollers 11 so that the roller unit 10 has a straight shape. Or it can be bent and deformed into a curved shape. The number of rollers 11 included in the roller unit 10 is not particularly limited as long as the rollers 11 can directly rotate and easily transport the web 30 .

In one embodiment of the present invention, as shown in FIG. 1 (a), the control unit 20 may be connected to one end of the roller unit 10. The control unit 20 is a control unit 20 connected to the roller unit 10 in order to flexibly respond to the amount and direction of wrinkles on the web 30 that are differently generated depending on the quality of the electrode or separator or the state of the transfer line. It may be a means for removing wrinkles on the web by directly manipulating a user.

In one embodiment of the present invention, as shown in FIG. 1 (c), the web wrinkle removal device includes a shaft 100 connected through the inside of the roller unit 10 and the control unit 20. . The shaft 100 may be configured to pass through the inside of the roller unit 10 and the control unit 20 and connect them to each other so that the roller unit 10 and the operation unit 20 are integrated into one structure. there is. Specifically, the plurality of rollers 11 included in the roller unit 10 transports the web 30 while rotating about the shaft 100 as a central axis, and the shaft passing through the inside of the roller unit 10 The roller unit 10 in which a plurality of rollers 11 are arranged may also have a structure in which a plurality of rollers 11 are bent and curved in a direction perpendicular to the longitudinal direction according to a degree of bending of the roller 100 in a direction perpendicular to the longitudinal direction.

In one embodiment of the present invention, as shown in Figure 1 (c), the shaft 100 is a bending (bending) shaft 110 that is bent in a circular arc (arc) shape in a direction perpendicular to the longitudinal direction; and a fixed shaft 120 of a straight line shape. As shown in FIGS. 1(b) and (c), one end of the shaft located in the manipulation unit 20 at both ends of the shaft 100 is cut in the middle, and the bending shaft 110 and While each includes the fixed shaft 120, the other end of the shaft located in the opposite direction to the control unit 20 is not divided into the bending shaft 110 and the fixed shaft 120 because the middle is not cut. It may be a single shaft structure. As shown in Figure 1 (b), the shaft 100 is a shaft 100 reaching through all of the plurality of rollers 11 from one end of the shaft 100 located in the control unit 20 Up to the point immediately before the other end of the shaft 100 may be a shaft structure that is divided into a bending shaft 110 and a fixed shaft 120 by being cut.

In one embodiment of the present invention, the bending shaft 110 may include an elastic material, and any material that has elasticity and can be bent in a direction perpendicular to the longitudinal direction of the shaft is not particularly limited.

In one embodiment of the present invention, the bending shaft 110 may be a shaft in the shape of a straight line, but as shown in FIG. It may be a structure that is bent and curved in an arc shape in a direction perpendicular to the longitudinal direction. Due to the structure in which the bending shaft 110 is bent, the roller unit 10 including a plurality of rollers 11 rotating around the bending shaft 110 and the fixed shaft 120 as a central axis forms a web 30 Wrinkles on the web can be removed by the widening effect generated by the rotation of the roller unit 10 in a state in which the surface in contact with the web is formed in an arc shape bent outward based on the cross section based on the central axis.

In one embodiment of the present invention, as shown in FIG. 1 (c), the fixed shaft 120 is a shaft fixed in a straight line shape, and the fixed shaft 120 has a flange 121 at one end. ), and the flange 121 may be fixed to the fitting groove 223 of the handle 220. Specifically, a flange 121 may be included at an end of one end of the fixing shaft 120 located in the manipulation unit 20, and the flange 121 is the handle for fixing with the handle 220 ( 220) to receive a pulling force according to the left and right movement of the handle 220.

In one embodiment of the present invention, as shown in FIG. 1 (c), the web wrinkle removal device is located inside the control unit 20 and has a first bearing 210 in contact with the outer circumferential surface of the shaft 100. ). Specifically, the first bearing 210 is a mechanical element that supports the shaft 100, which is the central axis of rotational motion, at a certain position and reduces friction that may occur during rotation, as shown in FIG. 1(c). Likewise, it can serve to reduce deformation due to friction and frictional heat generated during rotation while in contact with the outer circumferential surface of the shaft 100.

In one embodiment of the present invention, as shown in FIG. 1(c), the first bearing 210 may be a ball bearing, preferably a thrust ball bearing. there is. Specifically, the thrust ball bearing may be a bearing that is advantageous in responding to bending of a shaft when bending of the roller unit 10 occurs due to bending of the bending shaft 110 .

In one embodiment of the present invention, as shown in Figure 1 (c), the web wrinkle removal device includes a handle 220 connected to one end of the shaft 100. The handle 220 may be a user's direct adjustment means for removing wrinkles on the web.

In one embodiment of the present invention, as shown in FIG. 1(c), one end of the bending shaft 110 is inserted into the hollow part 221 of the handle 220, and the bending shaft 110 of the outer circumferential surface (111); And an inner circumferential surface 222 located in the hollow part 221 of the handle 220; each includes a different one of a screw bone and a screw thread, and the bending shaft 110 and the handle ( 220) may be combined. Specifically, as shown in FIG. 1(c), one end of the bending shaft 110 is inserted into the hollow part 221 located inside the handle 220, and one end of the bending shaft 110 An outer circumferential surface 111; and an inner circumferential surface 222 located in the hollow part 221 of the handle 220; Each includes a different one of the screw bone and the screw thread, and the degree of fastening between the screw bone and the screw head is adjusted according to the rotation direction of the handle 220, and accordingly, the handle 220 can move left and right horizontally.

In one embodiment of the present invention, the outer circumferential surface 111 of the bending shaft 110 may include a screw thread, and the inner circumferential surface 222 located in the hollow part 221 of the handle 220 may include a screw bone. there is.

In this specification, the 'hollow part' may be defined as an empty space formed in the handle in which the bending shaft is inserted.

In one embodiment of the present invention, the handle 220 may be a means for controlling the degree of bending of the bending shaft 110 . In one embodiment of the present invention, the handle 220 is a rotary handle having the shaft 100 as a central axis, and the bending shaft 110 is bent according to the amount and direction of rotation of the rotary handle. The degree can be controlled.

Specifically, the degree to which the flange 121 coupled to the fitting groove 223 of the handle 220 and the fixed shaft 120 connected thereto is pulled to the right varies according to the rotation direction and amount of rotation of the handle 220. In a situation where both ends of the shaft 10 are fixed, as the fixed shaft 120 receives a force pulling to the right, the bending shaft 110 is bent in an arc shape in a direction perpendicular to the longitudinal direction. degree may vary. More specifically, the inner circumferential surface 222 of the inside of the handle 220 and the outer circumferential surface 111 of one end of the bending shaft 110 may be coupled in a screw thread-screw bone structure, and the handle 220 is a rotary handle. At the point , the handle 220 moves to the left as the coupling section between the thread and the screw bone increases according to the rotation direction and amount of rotation of the handle, or the handle 220 moves to the right as the coupling section decreases and the coupling is released. can move At this time, when the handle 220 moves to the right side, the flange 121 fitted into the fitting groove 223 of the handle 220 also has an increased pulling force to the right side as the handle 220 moves. The force of pulling the fixed shaft 120 connected to the flange 121 to the right gradually increases, and eventually, the bending shaft 110 may be bent while being bent in a direction perpendicular to the longitudinal direction. Conversely, as the handle 220 moves to the left, the force of pulling the flange 121 inserted into the fitting groove 223 of the handle 220 to the right is reduced as the handle 220 moves. The force of pulling the fixed shaft 120 to the right, which is connected to 121, gradually decreases, and eventually, the degree of bending of the bending shaft 110 is reduced in a direction perpendicular to the longitudinal direction.

In one embodiment of the present invention, as shown in FIG. 2 (b), the bending shaft 110 has a central point of the shaft of 0.1 mm or more, 0.3 mm or more, 0.5 mm or more, or 0.7 mm or more with respect to the central axis. , 0.9 mm or more, 1.1 mm or more, 1.3 mm or more, 1.5 mm or more, 1.7 mm or more, 1.9 mm or more, 2.1 mm or more, or 2.3 mm or more may be a shaft that is bent and curved in an arc shape to be spaced apart, and the center point of the shaft 5 mm or less, 4.8 mm or less, 4.6 mm or less, 4.4 mm or less, 4.2 mm or less, 4.0 mm or less, 3.8 mm or less, 3.6 mm or less, 3.4 mm or less, 3.2 mm or less, 3.0 mm or less, 2.8 mm or less It may be a shaft bent in an arc shape. When the bending shaft is bent and the distance 111 away from the center point of the central axis reference shaft is less than 0.1 mm, the degree of bending of the bending shaft is insignificant, so that the roller part is bent outward and rotates with respect to the central axis. It is difficult to expect a widening effect according to the method, and the effect of removing wrinkles on the web may also be insignificant. On the other hand, if the bending shaft is bent and the distance 111 away from the center point of the central axis reference shaft exceeds 5.0 mm, wrinkles are formed in that the degree of bending of the bending shaft, that is, the degree of bending is severe. It cannot be removed, but rather can create larger wrinkles on the web. Specifically, when the bending shaft 110 is bent and the distance 111 away from the center point of the central axis reference shaft reaches 5.0 mm, the bending shaft 110 is maximally bent and the distance 111 is maximally limited. It is possible to design a structure in which no further bending of the bending shaft occurs through additional manipulation, and preferably to prevent the bending shaft from bending beyond the maximum distance when the distance is reached. A stopper configuration may be further included.

The web wrinkle removal device of the present invention, in order to improve the fact that the conventional web wrinkle removal device could only restrictly remove wrinkles of a fixed size, according to the quality of the separator or electrode or the state of the transfer line in the process In order to easily respond to changes in wrinkles, the user directly adjusts the degree of curvature of the shaft with a simple operation, improving mismatch defects on the web and reducing the time to adjust the wrinkles on the web by flexibly responding to each occurrence of wrinkles. It can provide the effect that can be done.

All simple modifications or changes of the present invention belong to the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

10: roller part
11: roller
12: 2nd bearing
20: control panel
30: web
100: shaft
110: bending shaft
111: outer circumferential surface of the bending shaft
112: the distance that the bending shaft is curved in an arc shape based on the central axis and is spaced apart
120: fixed shaft
121: flange
210: first bearing
220: handle
221: hollow part
222: inner circumferential surface of handle
223: fitting groove

Claims (9)

roller unit; And in the web wrinkle removal device comprising a; operating unit connected to one end of the roller unit,
a shaft connected through the inside of the roller unit and the control unit;
a first bearing positioned inside the control unit and in contact with an outer circumferential surface of the shaft; and
A handle coupled to one end of the shaft; includes,
The shaft is a bending (bending) shaft that is bent in a circular arc (arc) shape in a direction perpendicular to the longitudinal direction; And a fixed shaft of a straight line; including,
Web wrinkle removal device.
According to claim 1,
The handle is a means for controlling the degree of bending of the bending shaft,
Web wrinkle removal device.
According to claim 1,
The handle is a rotary handle having the shaft as a central axis,
The degree of bending of the bending shaft is controlled according to the amount and direction of rotation of the rotary handle.
Web wrinkle removal device.
According to claim 1,
One end of the bending shaft is inserted into the hollow portion of the handle,
an outer circumferential surface of the bending shaft; and an inner circumferential surface located in the hollow of the handle; each includes a different one of a screw bone and a screw thread,
The bending shaft and the handle are coupled through the fastening of the screw bone and the screw thread,
Web wrinkle removal device.
According to claim 1,
The outer circumferential surface of the bending shaft includes a screw thread,
The inner circumferential surface located in the hollow of the handle includes a screw bone,
Web wrinkle removal device.
According to claim 1,
The fixed shaft includes a flange at one end,
The flange is fixed to the fitting groove of the handle,
Web wrinkle removal device.
According to claim 1,
The first bearing is a thrust ball bearing,
Web wrinkle removal device.
According to claim 1,
The bending shaft is a shaft that is bent and curved in an arc shape so that the center point of the shaft is 0.1 to 5 mm apart from the central axis.
Web wrinkle removal device.
According to claim 1,
Two or more rollers arranged in a line based on the longitudinal direction of the roller unit; And a second bearing embedded inside each of the rollers; including,
Web wrinkle removal device.

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