Winding device and winding method

Abstract

The present invention provides a winding device and winding method that can provide information for evaluating winding tension. [Solution] The winding device EA includes a winding means 10 that winds the elongated body FL onto a winding shaft 12, and a marking means 20 that is linked to the rotation of the winding shaft 12 and applies a mark MK to the edge of the elongated body FL in the width direction so that it is visible when viewed from that width direction.

Description

[Technical Field]

[0001] The present invention relates to a winding device and a winding method. [Background technology]

[0002] A winding device is known that winds a long object onto a winding shaft (see, for example, Patent Document 1). [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 5-85652 [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] In the winding device described in Patent Document 1, when there is a change in the speed of the long body on the winding line due to the occurrence of winding tightness of the film 9 (long body), the driving means that drives the winding shaft smoothly follows this change to prevent oscillation of the winding line. However, no information is provided for evaluating winding tightness.

[0005] The object of the present invention is to provide a winding device and a winding method that can provide information for evaluating winding tension. [Means for solving the problem]

[0006] A winding device according to one aspect of the present invention includes a winding means for winding a long body onto a winding shaft, and a marking means that is linked to the rotation of the winding shaft and marks the end edge of the long body in the width direction so as to be visible when viewed from that width direction.

[0007] A winding device according to one aspect of the present invention may include an imaging means for imaging a series of marks appearing on the end face of a winding formed by winding the elongated body, and an evaluation result output means that allows comparison, or compares, the series of marks obtained from the image captured by the imaging means with the series of marks when the elongated body is not wound tightly, and outputs the result as an evaluation of the winding tightness.

[0008] A winding device according to one aspect of the present invention comprises a winding means for winding a long body on a winding shaft, and a winding pressure detection means for detecting the winding pressure of the long body.

[0009] A winding device according to one aspect of the present invention may include an evaluation result output means that allows for comparison of the winding pressure detected by the winding pressure detection means with the winding pressure when there is no winding tension on the long body, or compares them and outputs the winding tension evaluation result.

[0010] A winding method according to one aspect of the present invention includes a winding step of winding a long body onto a winding shaft, and a marking step of applying a mark to the end edge of the long body in the width direction, in conjunction with the rotation of the winding shaft, so as to be visible when viewed from that width direction.

[0011] A winding method according to one aspect of the present invention comprises a winding step of winding a long body onto a winding shaft and a winding pressure detection step of detecting the winding pressure of the long body. [Effects of the Invention]

[0012] According to the present invention, marks are applied to the edges in the width direction of the elongated body in such a way that they are visible when viewed from that width direction. As a result, a series of marks appears on the end face of the wound material formed by winding the elongated body. Since the shape of this series of marks changes depending on the degree of winding tightness, this series of marks can be provided as information for evaluating the winding tightness.

[0013] According to the present invention, in order to detect the winding pressure of a long body which changes depending on the degree of winding tightness, this winding pressure can be provided as information for evaluating the winding tightness. [Brief explanation of the drawing]

[0014] [Figure 1] Explanatory drawing of a winding device according to the first embodiment of the present invention. [Figure 2] Figure showing information for evaluating winding tightness according to the first embodiment. [Figure 3] Explanatory drawing of a winding device according to the second embodiment of the present invention. [Figure 4] Figure showing information for evaluating winding tightness according to the second embodiment.

Mode for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described based on the drawings. In addition, in the present embodiment, the X-axis, Y-axis, and Z-axis are in a mutually orthogonal relationship. The X-axis and Y-axis are axes within a predetermined plane, and the Z-axis is an axis orthogonal to the predetermined plane. Further, in the present embodiment, based on the case when viewed from the front direction in FIG. 1 parallel to the Y-axis, when indicating a direction, "up" is the arrow direction of the Z-axis, "down" is the opposite direction, "left" is the arrow direction of the X-axis, "right" is the opposite direction, "front" is the arrow direction of the Y-axis, and "rear" is the opposite direction. Also, in the second embodiment and later, components having the same configuration and the same functions as those already described in the embodiment are given the same reference numerals as those in that embodiment, or the illustration is omitted, and their explanations are simplified or omitted.

[0016] [First Embodiment] In FIG. 1, the winding device EA includes a winding means 10 that performs a winding process of winding a strip-shaped film FL as a long member around a winding shaft 12, a printing means 20 that performs a printing process of applying a mark MK so as to be visible from the width direction to the edge in the width direction of the film FL in conjunction with the rotation of the winding shaft 12, an imaging means 30 that performs an imaging process of imaging a series AM of marks MK appearing on an end surface RB1 of a wound object RB formed by winding the film FL, and an evaluation result output means 40 that enables comparison between the series AM of marks MK obtained from the captured image of the imaging means 30 and the series AM of marks MK when there is no winding tightness of the film FL, and outputs the result as an evaluation result of the winding tightness. Note that the width direction of the film FL refers to a direction orthogonal to the longitudinal direction of the film FL.

[0017] The winding means 10 includes a rotation motor 11 as a driving device, a winding shaft 12 supported on the output shaft of the rotation motor 11, and guide rollers 13 and 14 for guiding the film FL. In the case of this embodiment, the winding means 10 is configured to wind the film FL around a winding tube HP attached to the winding shaft 12.

[0018] The printing means 20 includes a linear motion motor 21 as a driving device, and a marker 23 such as a pen or a stamp supported via a bracket 22 on the output shaft 21A of the linear motion motor 21. In the case of this embodiment, the printing means 20 is arranged at a position facing the guide roller 13 with the film FL in contact with the guide roller 13 sandwiched therebetween, and is configured to sandwich the film FL between the guide roller 13 and the marker 23 when the marker 23 applies the mark MK to the film FL.

[0019] The imaging means 30 includes an imaging device 31 composed of a camera, a photographing machine, or the like.

[0020] The evaluation result output means 40 includes a processing means 41 such as a computer or a sequencer, and a monitor 42 as an output means. The processing means 41 has in advance stored the shape of the evaluation reference line RM, which is a series of marks MK that appear on the end face RB1 of the wound material RB when winding tightness does not occur, or a calculation formula for calculating the evaluation reference line RM.

[0021] In this embodiment, the evaluation result output means 40 processes the image captured by the imaging means 30 using the processing means 41 to extract a sequence of marks MK AM, and then overlays the evaluation reference line RM on the extracted sequence of marks MK AM and displays it on the monitor 42.

[0022] The operation of the winding device EA described above will now be explained. First, the user of the winding device EA (hereinafter simply referred to as "user") sets the film FL in the winding device EA, which has its components positioned in the initial positions shown by the solid lines in Figure 1, as shown in the figure. Then, a signal to start automatic operation is input via an operating means (not shown), such as an operation panel or a personal computer. The winding means 10 then drives the rotary motor 11 and starts winding the film FL.

[0023] Next, the marking means 20 drives the linear motor 21, raising and lowering the marker 23 once each time the winding shaft 12 rotates. As a result, marks MK are applied to the widthwise edge of the film FL by the marker 23 at intervals corresponding to one rotation of the winding shaft 12 each time the winding shaft 12 rotates. Subsequently, the film FL is wound onto the winding tube HP by the winding shaft 12, forming a wound product RB. As the winding of the film FL progresses and the wound product RB thickens in its radial direction, a linear sequence of marks MK AM appears on the end face RB1 of the wound product RB, as shown in Figure 1. This sequence of marks MK AM is provided as information for evaluating the winding tightness.

[0024] Next, the imaging means 30 drives the imaging device 31 and images the end face RB1 of the winding material RB each time the winding shaft 12 rotates once or a predetermined number of times. Then, the evaluation result output means 40 processes the captured image with the processing means 41 to extract a sequence of marks MK AM, and displays the evaluation reference line RM superimposed on the extracted sequence of marks MK AM on the monitor 42.

[0025] Subsequently, when the winding means 10 has wound up a predetermined length of film FL, the drive of the rotary motor 11 is stopped. Next, when the film FL is cut by a cutting means such as a cutting blade, the user or a transport means (not shown) such as an articulated robot or a belt conveyor transports the wound material RB to the next process or storage location, and the above-mentioned operations are repeated thereafter.

[0026] Here, if we let r be the radius of the Nth layer of the wound material RB, r+dr be the radius of the (N+1)th layer, and π be pi, then the difference in circumference ΔCF between the Nth layer and the (N+1)th layer when no winding compression occurs is expressed by the following equation (1). ΔCF=2π(r+dr)-2πr=2πdr …(1)

[0027] Therefore, when a mark MK is applied to the film FL with each rotation of the winding shaft 12, if no winding tightness occurs, the mark MK of the (N+1)th layer will be shifted by 2πdr in the opposite direction to the rotation direction RD of the winding shaft 12 (hereinafter referred to as the counter-rotation direction) relative to the mark MK of the Nth layer. As a result, when no winding tightness occurs, the marks MK will be connected on the end face RB1 of the winding RB as shown by the dashed line in Figure 2(A). This line will be designated as the winding tightness evaluation reference line RM.

[0028] In contrast, when winding tightness occurs, the N+1th layer of film FL slides in the counter-rotational direction relative to the Nth layer, causing the mark MK on the N+1th layer to be shifted by more than 2πdr in the counter-rotational direction relative to the mark MK on the Nth layer. Therefore, when winding tightness occurs, the end face RB1 of the wound material RB appears as a line where the sequence of marks AM is shifted in the counter-rotational direction from the evaluation reference line RM, as shown in Figure 2(A). Furthermore, as the winding tightness increases, the deviation of the sequence of marks AM from the evaluation reference line RM increases, as shown in Figure 2(B). Therefore, the winding tightness of film FL can be evaluated by the amount of deviation of the sequence of marks AM relative to the evaluation reference line RM.

[0029] According to the embodiments described above, since marks MK are applied to the widthwise edge of the film FL so as to be visible from that widthwise direction, a series of marks MK AM appears on the end face RB1 of the winding RB formed by winding the film FL. Since the shape of the series of marks MK AM changes depending on the degree of winding tightness, this series of marks MK AM can be provided as information for evaluating the winding tightness.

[0030] Furthermore, the sequence of marks AM obtained from the image captured by the imaging means 30 can be compared with the sequence of marks MK when there is no film tightness, and this is output as an evaluation result of the tightness, so that the user can recognize the degree of tightness.

[0031] Furthermore, since the film FL is marked with a MK symbol from the start of winding, the tightness of the winding can be evaluated from the initial stages of winding. This allows the user to quickly address any issues with the winding.

[0032] [Second Embodiment] In this embodiment, as shown in Figure 3, the winding device EA is equipped with a winding pressure detection means 50 that performs a winding pressure detection process to detect the winding pressure of the film FL, instead of the marking means 20, and the content of the winding tension evaluation result output by the evaluation result output means 40 differs from that of the first embodiment.

[0033] The evaluation result output means 40 makes it possible to compare the winding pressure of the film FL detected by the winding pressure detection means 50 with the winding pressure of the film FL when there is no winding tension, and outputs it as an evaluation result of winding tension. Specifically, the evaluation result output means 40 displays on the monitor 42 an evaluation reference line RP, which corresponds to the time change of winding pressure when no winding tension occurs, superimposed on the evaluation line AP, which corresponds to the time change of winding pressure detected by the winding pressure detection means 50. For this reason, the processing means 41 stores in advance the shape of the evaluation reference line RP or a calculation formula for calculating the evaluation reference line RM.

[0034] The winding pressure detection means 50 includes a pressure sensor 51 and a transmitter 52 connected to the pressure sensor 51, which wirelessly transmits the detected value of the pressure sensor 51 to the processing means 41. In this embodiment, the winding pressure detection means 50 has the transmitter 52 positioned on the outer circumferential surface of the winding shaft 12 and the pressure sensor 51 positioned on the outer circumferential surface of the winding tube HP.

[0035] The operation of the winding device EA described above will now be explained. First, the winding means 10 drives the rotary motor 11 in the same manner as in the first embodiment, and when winding of the film FL begins, the film FL is wound so that the pressure sensor 51 is sandwiched between the outer surface of the winding tube HP. As a result, a force is applied to the pressure sensor 51 by the film FL toward the radially inward direction of the winding object RB, and the pressure of this force acts as the winding pressure.

[0036] Next, the winding pressure detection means 50 detects the winding pressure of the film FL with the pressure sensor 51, and transmits the detected winding pressure from the transmitter 52 to the processing means 41 each time the winding shaft 12 rotates once or a predetermined number of times. Then, the evaluation result output means 40 displays the evaluation reference line RP superimposed on the evaluation line AP, which corresponds to the time progression of the winding pressure detected by the winding pressure detection means 50, on the monitor 42.

[0037] Subsequently, once the winding means 10 has wound up a predetermined length of film FL, the drive of the rotary motor 11 is stopped, and the film FL is cut and the wound material RB is transported in the same manner as in the first embodiment, and the same operations described above are repeated thereafter.

[0038] Here, the radius of the winding RB is r, the winding pressure is σ, and the circumferential Young's modulus is E. θ , the radial Young's modulus is E r Therefore, if no coiling occurs, the following relationship shown in equation (2) holds true. r 2 ·(d 2 Δσ / dr 2 )+3r·(dΔσ / dr)-(E θ / E r -1)Δσ=0 …(2)

[0039] From this relational expression, for any Young's modulus E θ , E r When the time change of the winding pressure from the start of winding is calculated by numerical analysis and graphed for the film FL having, the result is like the line PL shown in the left figure in FIG. 4. This line PL is taken as the pressure reference line PL. As can be seen from the pressure reference line PL, when winding does not occur, the winding pressure shows a maximum value immediately after the start of winding and then gradually decreases. Since the values of Young's modulus E θ , E r of the film FL are different, the actual winding pressure has different magnitudes for each film FL as shown by the line PL1 in the left figure in FIG. 4, but changes in substantially the same form as the pressure reference line PL.

[0040] On the other hand, when winding occurs, since the films FL slide in the reverse rotation direction with respect to each other by the wound object RB, the time change of the winding pressure from the start of winding is as shown by the line PL2 in the left figure in FIG. 4, and the winding pressure increases as winding progresses and time passes. Then, when winding ends, the winding pressure reaches the maximum value.

[0041] Taking these into consideration, for the lines PL1 and PL2 showing the time change of the detected winding pressure, the evaluation result output means 40 sets the value of the winding pressure at each time divided by the maximum value of the winding pressure during winding as the winding pressure evaluation lines AP1 and AP2. For the pressure reference line PL, the value of the winding pressure at each time divided by the maximum value of the winding pressure during winding is set as the evaluation reference line RP, and as shown in the right figure in FIG. 4, the evaluation reference line RP is superimposed on the winding pressure evaluation lines AP1 and AP2 and displayed on the monitor 42. Therefore, the degree of winding of the film FL can be evaluated based on the deviation amount of the winding pressure evaluation lines AP1 and AP2 with respect to the evaluation reference line RP.

[0042] According to the above embodiment, since the winding pressure of the film FL that changes depending on the degree of winding is detected, this winding pressure can be provided as information for evaluating winding.

[0043] Furthermore, the winding pressure detected by the winding pressure detection means 50 can be compared with the winding pressure when there is no winding tension in the film FL, and the evaluation result of the winding tension is output, so that the user can recognize the degree of winding tension.

[0044] Furthermore, since the winding pressure of the film FL is detected from the start of winding, the winding tension can be evaluated from the initial stages of winding.

[0045] As described above, the best configurations, methods, etc., for carrying out the present invention are disclosed in the above description, but the present invention is not limited thereto. That is, although the present invention is mainly illustrated and described in relation to specific embodiments, those skilled in the art can make various modifications to the embodiments described above in terms of shape, material, quantity, and other detailed configurations without departing from the scope of the technical idea and objectives of the present invention. Furthermore, the descriptions of shapes, materials, etc. disclosed above are illustrative to facilitate understanding of the present invention and do not limit the present invention, so descriptions of components with some or all of those limitations removed are included in the present invention. The means and processes in this invention are not limited in any way as long as they can perform the operations, functions, or processes described for those means and processes, and are certainly not limited at all to the components or processes of a single embodiment shown above. For example, the winding means can be any means that winds a long body onto a winding shaft, and is not limited in any way as long as it is within the scope of the common technical knowledge at the time of filing (the same applies to other means and processes).

[0046] The winding means 10 may wind the film FL directly onto the winding shaft 12 without using the winding tube HP.

[0047] The marking means 20 may, instead of the linear motor 21, include a rotary motor as a drive device that supports the marker 23 via a bracket 22 with an output shaft parallel to the X axis, and by rotating the marker 23 with the output shaft of the rotary motor as the center of rotation, the marker 23 may be moved closer to and further away from the edge of the film FL to apply a mark MK to the film FL. The marking means 20 can be positioned anywhere as long as it can apply a mark MK to the widthwise edge of the film FL so that it is visible from that widthwise direction. For example, it may be positioned opposite the winding shaft 12 with the winding material RB in between, or opposite the guide roller 14 with the film FL in contact with the guide roller 14, or opposite the film FL that lies between the winding shaft 12 and the guide roller 13, or opposite the film FL that lies between the guide roller 13 and the guide roller 14. If the marking means 20 is positioned opposite the winding shaft 12 or the rollers such as the guide rollers 13 and 14, it is possible to prevent the film FL from bending when the marker 23 applies the mark MK to the film FL. The marking means 20 only needs to apply a mark MK each time the winding shaft 12 rotates once or a predetermined number of times. For example, a mark MK may be applied to the film FL every two rotations of the winding shaft 12. Even in this case, the marks MK will appear on the end face RB1 of the winding material RB in a continuous or intermittent manner. The marker 23 can be any type of device capable of applying a mark MK to the film FL. For example, it may be a printing method such as an inkjet printer, laser printer, dot matrix printer, or thermal printer; it may be an energy ray irradiation method such as a laser irradiation device or electromagnetic wave irradiation device that partially modifies the film FL by laser irradiation or electromagnetic wave irradiation to apply a mark MK; or it may be a method that partially modifies the film FL to apply a mark MK by applying a heating medium such as hot water or hot air, or a cooling medium such as cold water or cold air.

[0048] The evaluation result output means 40 may output the evaluation results of the winding tension in any form. For example, it may compare the sequence of markings AM or the winding tension evaluation line AP with the evaluation reference lines RM and RP, and the processing means 41 may calculate and output the amount of deviation of the sequence of markings AM relative to the evaluation reference line RM, or the amount of deviation of the winding tension evaluation line AP relative to the evaluation reference line RP, as numerical values. Alternatively, it may output the degree of deviation relative to the evaluation reference lines RM and RP in stages such as "large deviation," "small deviation," or "no deviation (within acceptable range)." Alternatively, it may output the evaluation results as sound using a speaker as the output means, or it may output the evaluation results as the color of light using multiple lamps or lights of different colors as the output means. The evaluation result output means 40 may use the processing means 41 to graphically represent the sequence of marks MK AM extracted from the image captured by the imaging means 30, and then overlay the evaluation reference line RM onto the graphic and display it on the monitor 42, or it may overlay the evaluation reference line RM onto the image captured by the imaging means 30 itself and display it on the monitor 42. The evaluation result output means 40 may display the series of marks MK AM and the winding pressure evaluation line AP with the evaluation reference lines RM and RP superimposed, or it may display them separately. The output device can be placed anywhere; for example, it may be installed in a location where film FL is not being wound. In this case, even users who are not in the film FL winding area can check the winding tension evaluation results.

[0049] The material, type, shape, etc., of the elongated body in the present invention are not particularly limited. For example, the elongated body may be a sheet having adhesive or bonding properties, such as an adhesive sheet or bonding sheet, temporarily attached to a strip-shaped release sheet, or it may be in the shape of a strip, string, or other shapes. Furthermore, the sheet having adhesive or bonding properties may be any type, such as a single layer of only an adhesive or bonding layer, a two-layer sheet in which a base material and an adhesive or bonding layer are laminated, a three-layer or three or more-layer sheet in which one or more intermediate layers are laminated between the base material and the adhesive or bonding layer, a three-layer or three or more-layer sheet in which one or more cover layers are laminated on the upper surface of the base material, a sheet in which the base material, intermediate layer or cover layer is provided in a peelable manner, a single-layer double-sided adhesive sheet or double-sided bonding sheet consisting only of an adhesive or bonding layer, a double-sided adhesive sheet or double-sided bonding sheet in which adhesive or bonding layers are laminated on both outermost surfaces of one or more intermediate layers, etc. The adhesive or bonding sheet may be any sheet, film, tape, etc., such as information labels, decorative labels, protective sheets, dicing tapes, die attach films, die bonding tapes, or recording layer forming resin sheets.

[0050] The drive equipment in the above embodiment may be electric motors such as rotary motors, linear motors, single-axis robots, and so-called articulated robots with two or three or more joints, or actuators such as air cylinders, hydraulic cylinders, rodless cylinders, and rotary cylinders, either individually or in combination directly or indirectly. Furthermore, the drive equipment may be capable of or incapable of torque control or speed control of the output section of the electric motors or actuators.

[0051] In the above embodiment, an object (hereinafter referred to as "object A") and an object moving relative to object A (hereinafter referred to as "object B"), that is, object A and object B moving relative to each other, object B may move relative to object A which does not move, object A may move relative to object B which does not move, or both object A and object B may move, and either object A or object B may move as long as the result achieved by the movement is the same. If a rotating member such as a roller is used, a drive device for rotating the rotating member may be provided, and the surface of the rotating member or the rotating member itself may be made of rubber or resin. The components may be made of deformable members, or the surface of the rotating member or the rotating member itself may be made of a non-deformable member, or other members such as rotating or non-rotating shafts or blades may be used instead of rollers, or if a cutting means or cutting member is used to cut the member to be cut or to form cuts or cutting lines on the member to be cut, then, instead of or in combination with the examples above, a cutter blade, laser cutter, ion beam, thermal power, heat, water pressure, electric heating wire, spraying of gas or liquid, etc. may be used, or the member to be cut may be moved by combining appropriate drive equipment to perform the cutting. [Explanation of Symbols]

[0052] EA... Winding device 10... Winding mechanism 12...winding shaft 20... Marking means 30…Imaging means 40...Method for outputting evaluation results 50... Winding pressure detection means FL... Film (long format) MK...mark RB...winding material RB1...end face

Claims

1. A winding mechanism for winding a long object onto a winding shaft, A winding device characterized by comprising marking means that, in conjunction with the rotation of the winding shaft, marks the end edge in the width direction of the elongated body so as to be visible when viewed from that width direction.

2. An imaging means for imaging the sequence of marks appearing on the end face of a rolled-up object formed by winding up the elongated body, The winding device according to claim 1, further comprising an evaluation result output means that allows comparison of the sequence of marks obtained from the image captured by the imaging means with the sequence of marks when the long body is not wound tightly, or compares them and outputs the result as an evaluation of the winding tightness.

3. A winding mechanism for winding a long object onto a winding shaft, A winding device characterized by comprising winding pressure detection means for detecting the winding pressure of the long body.

4. The winding device according to claim 3, further comprising an evaluation result output means that allows comparison between the winding pressure detected by the winding pressure detection means and the winding pressure when there is no winding tightening of the long body, or compares them and outputs the evaluation result of the winding tightening.

5. The winding process involves winding a long object onto a winding shaft, A winding method characterized by performing a marking step, which is linked to the rotation of the winding shaft, and involves applying a mark to the end edge in the width direction of the elongated body so that it is visible when viewed from that width direction.

6. The winding process involves winding a long object onto a winding shaft, A winding method characterized by performing a winding pressure detection step for detecting the winding pressure of the long body.

Images