Position rollers for web meander control

Abstract

In one example, the position roller for meandering control includes a roller having a rotating shaft, a first ball joint that supports one of the two ends of the rotating shaft so that it can pivot, an XZ driver that drives one of the two ends of the rotating shaft with two-dimensional movement on a plane, and a base that supports the first ball joint and the XZ driver.

Description

[Technical Field]

[0001] The present invention relates to a position roller capable of controlling the meandering phenomenon in which a web member runs obliquely on a transfer roller.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0114644, filed on September 13, 2022, and all contents disclosed in the documents of said Korean patent application are incorporated herein by reference. [Background technology]

[0003] The demand for secondary batteries is also increasing rapidly due to technological developments and increased demand for mobile devices. Among them, lithium secondary batteries are widely used as an energy source for various electronic products as well as various mobile devices due to their high energy density, operating voltage, and excellent storage and life characteristics.

[0004] A lithium secondary battery consists of an electrode assembly, which includes a positive electrode and a negative electrode, each of which is coated with an active material on a current collector, and a porous separator between them, and is impregnated with an electrolyte containing lithium salt. The positive electrode active material is typically made of lithium-cobalt-based oxide, lithium-manganese-based oxide, lithium-nickel-based oxide, or lithium composite oxide, while the negative electrode active material is typically made of carbon-based materials. During charging, lithium ions from the positive electrode active material are released and inserted into the carbon layer of the negative electrode. During discharge, lithium ions from the carbon layer of the negative electrode are released and inserted into the positive electrode active material, with the electrolyte acting as a medium for transporting the lithium ions between the negative and positive electrodes.

[0005] Electrode assemblies can be broadly classified into jellyroll types, in which a sheet-like positive electrode and negative electrode coated with an active material are wound up with a separator interposed between them, stack types, in which multiple positive and negative electrodes are stacked in sequence with a separator interposed between them, and stack and folding types, in which stack-type unit cells are wound up with a long separator film. Secondary batteries are also classified into coin-type batteries, cylindrical batteries, prismatic batteries, and pouch-type batteries according to the shape of the battery case.

[0006] The secondary battery manufacturing process uses large amounts of thin metal films for the positive and negative electrodes and thin separator films, and in the case of pouch-type batteries, the packaging pouches are made from laminated sheets. Thin, flexible, continuous media such as film, paper, and thin metal films are collectively called webs (or web materials), and for the sake of secondary battery productivity, web materials are transported using a roll-to-roll method.

[0007] The roll-to-roll method is equipped with various rollers as transport devices, including a winder and unwinder that wind and unwind the web onto and from the roll, transport rollers, idle rollers, and tension rollers. The web member runs over these various rollers, and a meandering phenomenon, in which the web member runs at an oblique angle to the center of travel, frequently occurs.

[0008] If the meandering phenomenon is left unchecked, not only will the reject rate increase, but it may also cause malfunctions in various devices that process the web, and the web material may become folded, bent, warped, wrinkled, etc., and the web material itself may have to be discarded.

[0009] The meandering phenomenon is usually corrected using a meandering control device called an EPC (Edge Position Controller). The meandering control device often uses a pivot centering system, in which two rollers are rotatably mounted within a frame, and the pivoting system controls meandering by causing a planar pivot movement based on the center of the frame. In other words, assuming there is almost no slippage between the rollers and the web, the rotation of the frame changes the angle of the rollers, causing a change in the moment direction at the center of the web, thereby adjusting the running direction of the web.

[0010] However, this pivot centering method has the problem that it is difficult to respond when the web lifts up in the height direction because it uses only one degree of freedom of the center pivot, and the structure that adjusts two rollers by weaving them into one frame comes with restrictions on the installation position. Another disadvantage is that since the frame size is fixed, if the specifications of the transfer equipment are changed, it must be remanufactured to the customized specifications. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Korean Patent No. 10-2210392 (registered January 26, 2021) Summary of the Invention [Problem to be solved by the invention]

[0012] An object of the present invention is to provide a position roller for meandering control, which can effectively control the meandering phenomenon that occurs in a web transported in a roll-to-roll manner and has relaxed installation conditions, and a meandering control device including the same.

[0013] However, the technical problems that the present invention aims to solve are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the invention described below. [Means for solving the problem]

[0014] The present invention relates to a position roller for controlling meandering, and in one example, includes a roller with a rotating shaft, a first ball joint that supports the distal end of the rotating shaft so that it can pivot, an XZ driver that drives the proximal end of the rotating shaft with two-dimensional movement on a plane, and a base that supports the first ball joint and the XZ driver.

[0015] Here, the first ball joint supports the far end of the rotation shaft so that it can pivot in any direction.

[0016] The first ball joint is supported on a Y-axis rail attached to the base so as to be movable back and forth.

[0017] The XZ actuator may include a second ball joint coupled to a proximal end of the rotation shaft, a Z-axis frame having a Z-axis rail to which the second ball joint is linearly movably coupled, a Z-axis actuator to which the second ball joint provides power for linear movement along the Z-axis rail, an X-axis frame having an X-axis rail to which the Z-axis frame is linearly movably coupled, and an X-axis actuator to which the Z-axis frame provides power for linear movement along the X-axis rail.

[0018] Here, the second ball joint can support the proximal end of the rotation shaft so that it can pivot in any direction.

[0019] The first ball joint can passively move back and forth on the Y-axis rail in response to the linear movement of the second ball joint and the Z-axis frame by the XZ drive mechanism.

[0020] Meanwhile, the present invention provides a meandering control device including a first meandering control position roller and a second meandering control position roller having the above-mentioned configuration, a first EPS (Edge Position Sensor) arranged upstream of the first meandering control position roller, a second EPS arranged downstream of the second meandering control position roller, a first idle roller arranged between the first EPS and the first meandering control position roller, a second idle roller arranged between the second meandering control position roller and the second EPS, and a control unit that controls each XZ driver of the first meandering control position roller and the second meandering control position roller based on meandering travel information sensed by the first EPS.

[0021] According to an embodiment of the present invention, the control unit may perform feedback control using meandering information sensed by the second EPS as a feedback value.

[0022] The control unit can independently control the XZ drivers of the first meandering control position roller and the second meandering control position roller.

[0023] The control unit may control the XZ driver of the first meandering control position roller to control the incident angle of the running web, and may control the XZ driver of the second meandering control position roller to control the entrance / exit angle of the running web.

[0024] The control unit controls the X-axis drivers of the first meandering control position roller and the second meandering control position roller to control the incidence angle and inlet / outlet angle of the running web, and at the same time controls the Z-axis drivers of the first meandering control position roller and the second meandering control position roller to control slippage of the running web. [Effects of the Invention]

[0025] The meandering control position roller and meandering control device including the same having the above-described configuration allows the roller to freely perform steering movement on the X plane and tilting movement on the Z plane, with the distal end of the rotation axis serving as a pivot point, thereby maximizing the frictional force against the web running on the roller. This prevents web slippage and minimizes web slippage, thereby improving meandering control capability.

[0026] In addition, the present invention has an advantage that the configuration of the position roller for meandering control has a high degree of freedom in selecting the installation location since the roller and the XZ driver are compactly arranged on one base and do not occupy a large space.

[0027] However, the technical effects that can be obtained by the present invention are not limited to the effects described above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the invention described below. [Brief explanation of the drawings]

[0028] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention described below, serve to further understand the technical concept of the present invention, and therefore the present invention should not be interpreted as being limited solely to the matters depicted in such drawings. [Figure 1] FIG. 2 is a perspective view showing a meandering control position roller according to one embodiment of the present invention. [Figure 2] FIG. 2 is a plan view of the meandering control position roller of FIG. 1. [Figure 3] FIG. 2 is a front view of the meandering control position roller of FIG. 1. [Figure 4] FIG. 2 is a right side view of the meandering control position roller of FIG. 1. [Figure 5] 2 is a diagram showing a fixing structure of a roller rotation shaft in the meandering control position roller of FIG. 1. [Figure 6]2 is a diagram showing an embodiment of a meandering control device equipped with a meandering control position roller of FIG. 1. [Figure 7] 7 is a diagram showing an example of controlling the incident angle and the inlet / outlet angle of the web by the meandering control device of FIG. 6; DETAILED DESCRIPTION OF THE INVENTION

[0029] Because the present invention can be modified in various ways and can have various embodiments, specific embodiments will be described in detail below.

[0030] However, this is not intended to limit the invention to any particular embodiment, but is understood to include all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

[0031] In the present invention, the terms "comprise" and "have" are intended to specify the presence of features, numbers, steps, operations, components, parts or combinations thereof described in the specification, and are understood as not precluding the presence or possible addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0032] Furthermore, in the present invention, when a layer, film, region, plate, or other portion is described as being "on" another portion, this includes not only the case where it is "directly on" the other portion, but also the case where there is another portion therebetween. Conversely, when a layer, film, region, plate, or other portion is described as being "under" the other portion, this includes not only the case where it is "directly under" the other portion, but also the case where there is another portion therebetween. Furthermore, in this application, being "located on" can include not only the case where it is located at the top, but also the case where it is located at the bottom.

[0033] The present invention relates to a position roller for controlling meandering, and in one example, includes a roller with a rotating shaft, a first ball joint that supports the distal end of the rotating shaft so that it can pivot, an XZ actuator that drives the proximal end of the rotating shaft with two-dimensional movement on a plane, and a base that supports the first ball joint and the XZ actuator.

[0034] The meandering control position roller of the present invention, having such a configuration, has a proximal end of the roller's rotational axis that moves in two dimensions, combining a steering movement in the X plane and a tilting movement in the Z plane, while the distal end of the roller's rotational axis moves passively back and forth along the Y axis in response, thereby maximizing the frictional force against the web running on the roller.

[0035] In this way, the frictional force against the web is maximized, thereby preventing web slippage, and the web slippage is minimized, thereby improving meandering control capability. In particular, the meandering control position roller of the present invention has the advantage of having a high degree of freedom in selecting an installation location because the roller and XZ driver are compactly arranged on a single base, so it does not occupy a large space.

[0036] Hereinafter, specific embodiments of the meandering control position roller 100 of the present invention will be described in detail with reference to the accompanying drawings. For reference, the directions of front and back, up and down, left and right, and the like used in the following description to specify relative positions are intended to aid in understanding the invention, and unless otherwise specified, are based on the directions shown in the drawings.

[0037] (First embodiment) 1 is a perspective view showing a meandering control position roller 100 according to one embodiment of the present invention. The meandering control position roller 100 of the present invention can maximize frictional force against the web Wb running on the roller 120 by having one end of the rotation shaft 122 of the roller 120 perform two-dimensional movement that combines a steering movement on the X plane and a tilting movement on the Z plane. The specific configuration of the meandering control position roller 100 will be described in detail below with reference to the drawings.

[0038] 1, the meandering control position roller 100 of the present invention includes one roller 120 having a rotation shaft 122. As will be described later in the relevant section of the detailed description, a pair of meandering control position rollers 100 of the present invention constitutes a meandering control device 1000. This solves the problem of the conventional meandering control device having two rollers in one frame, which is significantly affected by the installation environment.

[0039] The distal end (based on the XZ actuator position) of the rotation shaft 122 provided on the roller 120 is pivotally supported by a first ball joint 130. A spherical plain bearing may be applied as the first ball joint 130, and the distal end of the rotation shaft 122 is fixed by the first ball joint 130, allowing it to pivot in all directions.

[0040] The proximal end of the rotary shaft 122 opposite both ends is coupled to the XZ actuator 140, which moves the proximal end of the rotary shaft 122 in two dimensions on a plane. The XZ actuator 140 changes the angle of the roller 120 with respect to the running web Wb, which changes the moment direction of the center of the web Wb, thereby adjusting the running direction of the web Wb.

[0041] The base 110 serves as a support base that maintains the structure of the meandering control position roller 100, and the first ball joint 130 and the XZ actuator 140 are mounted on the base 110. The ends of the roller 120 are indirectly mounted on the base 110 as a suspension structure connected to the first ball joint 130 and the XZ actuator 140, respectively.

[0042] For reference, in the illustrated embodiment, the base 110 has several through holes formed therein for weight reduction, and vertical ribs 112 bonded to the bottom surface for structural rigidity.

[0043] 2 is a plan view of the meandering control position roller 100 of FIG. 1, FIG. 3 is a front view of the meandering control position roller 100 of FIG. 1, and FIG. 4 is a right side view of the meandering control position roller 100 of FIG.

[0044] Referring to FIG. 1, the XZ actuator 140 will be described. The XZ actuator 140 includes a Z-axis frame 148 connected to a second ball joint 142 that is coupled to the proximal end of the rotation shaft 122, and an X-axis frame 154 that houses the Z-axis frame 148.

[0045] Here, a second ball joint 142 is also provided at the proximal end of the rotation shaft 122 of the roller 120, which corresponds to the fact that the distal end of the rotation shaft 122 is fixed to the first ball joint 130, and the cross-sectional view of Figure 5 shows the fixing structure for the rotation shaft 122 of the roller 120.

[0046] When the XZ driver 140 moves the near end of the rotation shaft 122 on a two-dimensional plane, causing the far end of the rotation shaft 122 to pivot, the angle that the far end of the rotation shaft 122 makes with respect to the XZ plane changes, so in order to accommodate this, both ends of the rotation shaft 122 are supported by the first ball joint 130 and the second ball joint 142, respectively. Therefore, the near end of the rotation shaft 122 is supported by the second ball joint 142 so that it can pivot in any direction.

[0047] Furthermore, as the near end of the rotation shaft 122 moves on a two-dimensional plane by the XZ driver 140, the distance of the far end of the rotation shaft 122 relative to the XZ plane (the distance between a point and the plane) changes, and in order to accommodate this, the far end of the rotation shaft 122 must move. For this purpose, the first ball joint 130 is supported on a Y-axis rail 132 attached to the base 110 so as to be able to move back and forth.

[0048] As a result, the XZ drive mechanism 140 causes the second ball joint and the Z-axis frame 148 to move linearly on a two-dimensional plane, and correspondingly, the first ball joint 130 passively moves back and forth on the Y-axis rail 132.

[0049] 1 to 4, we will now explain the specific configuration of the XZ driver 140. When viewed as a whole, the XZ driver 140 has a structure in which the Z-axis frame 148 is constrained to move linearly only in one direction relative to the X-axis frame 154, i.e., in the X-axis direction.

[0050] A second ball joint 142 coupled to the proximal end of the rotation shaft 122 is coupled to a Z-axis rail 144 so as to be linearly movable. The Z-axis rail 144 extending along the Z-axis direction is mounted on a Z-axis frame 148, and a Z-axis driver 146 fixed to the Z-axis frame 148 provides power for linearly moving the second ball joint 142 along the Z-axis rail 144. For example, the Z-axis driver 146 may linearly move the second ball joint 142 using a ball screw method.

[0051] In some embodiments, a linear drive mechanism other than the ball screw type may be used, and the second ball joint 142 may include a plate coupled to the Z-axis rail 144.

[0052] The entire Z-axis frame 148 including the Z-axis driver 146 is coupled to an X-axis rail 150 provided on an X-axis frame 154 so as to be linearly movable. The Z-axis frame 148 coupled to the X-axis rail 150 extending along the X-axis direction can move only in one direction along the X-axis, and the Z-axis frame 148 moves linearly along the X-axis rail 150 due to the power provided by the X-axis driver 152 attached to the X-axis frame 154.

[0053] As a result, the second ball joint 142 connected to the proximal end of the rotation shaft 122 can move freely on the XZ plane by the XZ drive mechanism 140, thereby allowing the roller 120 to freely perform steering movement on the X plane and / or tilting movement on the Z plane with the distal end of the rotation shaft 122 as the pivot point.

[0054] (Second embodiment) A pair of the meandering control position rollers 100 described in detail in the first embodiment can constitute a meandering control device 1000. Fig. 6 is a diagram showing an embodiment of the meandering control device 1000 including the above-described meandering control position rollers 100.

[0055] Referring to Figure 6, the meandering control device 1000 of the present invention includes a first meandering control position roller 100-1 and a second meandering control position roller 100-2, a first EPS 1010 and a second EPS 1020, a first idle roller 1110 and a second idle roller 1120, and a control unit 1200.

[0056] The first meandering control position roller 100-1 and the second meandering control position roller 100-2 are the meandering control position rollers 100 described with reference to Figures 1 to 5, and the meandering control device 1000 is equipped with a pair of meandering control position rollers 100. The rollers 120 of the first meandering control position roller 100-1 and the second meandering control position roller 100-2 are arranged such that the distal end and proximal end of the rotation shaft 122 face the same direction.

[0057] The meandering control device 1000 includes a first EPS 1010 disposed upstream of the first meandering control position roller 100-1 and a second EPS 1020 disposed downstream of the second meandering control position roller 100-2. The EPS (Edge Position Sensor) is a sensor that measures the angular position of the running web Wb, and the angular information of the web Wb measured by the EPS is compared with a reference position and used as data for determining the meandering direction and angle of the web Wb.

[0058] A first idle roller 1110 is disposed between the first EPS 1010 and the first meandering control position roller 100-1, and a second idle roller 1120 is disposed between the second meandering control position roller 100-2 and the second EPS 1020. That is, the first idle roller 1110 and the second idle roller 1120 are idle rollers disposed at the entrance and exit of the pair of meandering control position rollers 100-1 and 100-2, respectively, and the running direction of the web Wb is changed by the first idle roller 1110 and the second idle roller 1120. The change in the Z-axis direction of the first idle roller 1110 and the second idle roller 1120 applies tension to the web Wb, and the tension applied to the web Wb generates sufficient friction between the web Wb and each of the rollers 120 of the first meandering control position roller 100-1 and the second meandering control position roller 100-2.

[0059] The meandering motion of the web Wb is achieved by adjusting the running direction of the web Wb by changing the angle of the roller 120, which changes the moment direction of the center of the web Wb, and the effect of changing the moment direction of the center of the web Wb is most pronounced when there is no slip between the roller 120 and the web Wb. For this reason, the first idle roller 1110 and the second idle roller 1120 are necessary.

[0060] The control unit 1200 controls the XZ actuators 140 of the first meandering control position roller 100-1 and the second meandering control position roller 100-2 based on the meandering travel information, i.e., the meandering direction and angle of the web Wb, sensed by the first EPS 1010. Essentially, the angle of the roller 120 is adjusted so that a moment acts in the opposite direction to the meandering direction of the web Wb.

[0061] If the first EPS 1010 is a sensor that checks whether the web Wb is meandering, the second EPS 1020 corresponds to a sensor that checks whether the meandering of the web Wb has been corrected by the first meandering control position roller 100-1 and the second meandering control position roller 100-2. The control unit 1200 can perform feedback control using the meandering travel information sensed by the second EPS 1020 as a feedback value. In other words, the control unit 1200 can control meandering more quickly and effectively by using the result of meander correction relative to a target value for correcting the meandering of the web Wb to zero as a feedback value.

[0062] The control unit 1200 can independently control the XZ actuators 140 of the first meandering control position roller 100-1 and the second meandering control position roller 100-2. Figure 7 shows an example of controlling the incident angle α1 and the entrance / exit angle α2 of the web Wb using the meandering control device 1000, where the first meandering control position roller 100-1 and the second meandering control position roller 100-2 are at different angles.

[0063] Meanwhile, as described above, the first meandering control position roller 100-1 and the second meandering control position roller 100-2 can freely embody steering movement on the X plane and tilting movement on the Z plane, with each roller 120 having the far end of the rotation shaft 122 as the pivot point.

[0064] The steering movement has a large ability to adjust the web meandering, but has limitations on the entrance angle α1 and the entrance / exit angle α2 depending on the elongation rate of the material, i.e., the meandering adjustment range is narrow, and it is difficult to deal with the occurrence of lifting in the height direction of the web Wb. In contrast, the tilting movement has a smaller ability to adjust the meandering compared to the steering movement, but has the advantage of being able to minimize the phenomenon of lifting, stretching, or slipping of the web Wb.

[0065] The meandering control device 1000 of the present invention is equipped with a first meandering control position roller 100-1 and a second meandering control position roller 100-2 that can embody both steering movement on the X plane and tilting movement on the Z plane. As a result, the control unit 1200 can control the X-axis drivers 152 of the first meandering control position roller 100-1 and the second meandering control position roller 100-2 to control the entrance angle α1 and entrance / exit angle α2 of the running web Wb (steering control), and at the same time, control the Z-axis drivers 146 of the first meandering control position roller 100-1 and the second meandering control position roller 100-2 to control slippage of the running web Wb (tilting control).

[0066] Therefore, the meandering control device 1000 of the present invention has excellent meandering control capabilities by maximizing the frictional force between the web Wb and the roller 120 and minimizing slippage, and since the first meandering control position roller 100-1 and the second meandering control position roller 100-2 are structurally independent from each other, it is easy to install even in a small space.

[0067] For reference, the steering and tilting values ​​for the first meandering control position roller 100-1 and the second meandering control position roller 100-2 are optimally adjusted as experimental values ​​depending on the elastic coefficient and surface friction coefficient of the web Wb. Therefore, there are limitations in expressing these values ​​in specific numerical values. Therefore, different methods are established for each material of the web Wb to control the meandering of the web Wb.

[0068] The present invention has been described in more detail above with reference to the drawings and embodiments, etc. However, the configurations described in the drawings or embodiments in this specification are merely one embodiment of the present invention and do not represent all of the technical ideas of the present invention, so it should be understood that there may be various equivalents and modifications that can replace them at the time of filing this application. [Explanation of symbols]

[0069] 100: Position roller for meandering control 110: Bass 112: Vertical rib 120: Roller 122: Rotation axis 130: First ball joint 132: Y-axis rail 140: XZ drive machine 142: Second ball joint 144: Z-axis rail 146: Z-axis drive machine 148: Z-axis frame 150: X-axis rail 152: X-axis drive machine 154: X-axis frame 1000: Meandering control device 100-1: First meandering control position roller 100-2: Second meander control position roller 1010: 1st EPS 1020:2nd EPS 1110: First Idle Roller 1120: Second idle roller 1200: Control unit Wb:Web α1: Incident angle α2: Inlet / outlet angle

Claims

1. a roller having a rotation axis; a first ball joint that supports a distal end of the rotation shaft so that the distal end can pivot; an XZ drive mechanism that drives the near end of the rotation shaft in a two-dimensional motion on a plane; a base supporting the first ball joint and the XZ drive mechanism; Including, The first ball joint is The base is supported on a Y-axis rail so as to be movable back and forth. Position roller for meandering control.

2. The first ball joint is 2. The position roller for controlling meandering according to claim 1, wherein the distal end of the rotation shaft is pivotally supported in any direction.

3. The XZ drive mechanism is a second ball joint coupled to a proximal end of the rotary shaft; a Z-axis frame including a Z-axis rail to which the second ball joint is linearly movably coupled; a Z-axis drive mechanism that provides power for linear movement of the second ball joint along the Z-axis rail; an X-axis frame including an X-axis rail to which the Z-axis frame is linearly movably coupled; an X-axis drive unit that provides power for linearly moving the Z-axis frame along the X-axis rail; The position roller for controlling meandering according to claim 1 , comprising:

4. The second ball joint is 4. The position roller for controlling meandering according to claim 3, wherein the proximal end of the rotation shaft is pivotally supported in any direction.

5. 5. The position roller for controlling meandering according to claim 4, wherein the first ball joint passively moves back and forth on the Y-axis rail in response to linear movement of the second ball joint and the Z-axis frame by the XZ drive mechanism.

6. A meandering control device including the position roller for meandering control according to any one of claims 1 to 5, a first meandering control position roller; a second meandering control position roller; a first EPS disposed upstream of the first meandering control position roller; a second EPS disposed downstream of the second meandering control position roller; a first idle roller disposed between the first EPS and the first meandering control position roller; a second idle roller disposed between the second meandering control position roller and the second EPS; a control unit that controls each XZ driver of the first meandering control position roller and the second meandering control position roller based on meandering travel information sensed by the first EPS; A meandering control device including:

7. The control unit The meandering control device according to claim 6, wherein feedback control is performed using meandering information sensed by the second EPS as a feedback value.

8. The control unit The meandering control device according to claim 7 , wherein each of the XZ drivers of the first meandering control position roller and the second meandering control position roller is independently controlled.

9. The control unit controlling the XZ driving mechanism of the first meandering control position roller to control the incident angle of the traveling web; The meandering control device according to claim 8, further comprising: controlling an XZ drive mechanism of the second meandering control position roller to control an entrance / exit angle of the traveling web.

10. The control unit The X-axis drivers of the first meandering control position roller and the second meandering control position roller are controlled to control the incidence angle and the entrance / exit angle of the traveling web, and at the same time, The meandering control device according to claim 9, further comprising: controlling Z-axis drivers of the first meandering control position roller and the second meandering control position roller to control slippage of the running web.

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