Winding device for linear body

Abstract

A winding device for a line body calculates a winding diameter of a spool in a process of winding the line body on the spool. The winding device for the line body is provided with a bobbin for winding the line body; a winder that rotates the spool; the winding device includes a spool configured to receive a linear body, a guide roller configured to guide the linear body to the spool, the spool reciprocating relative to the guide roller in an axial direction of the spool, and a processing device configured to process the linear body. The processing device calculates a winding diameter of the bobbin based on a relative movement speed of the bobbin with respect to the guide roller, a rotation speed of the bobbin, and a winding speed of the linear body.

Description

Technical Field

[0001] The present disclosure relates to a winding device for a linear body. Background Art

[0002] Conventionally, techniques related to a winding device and a winding method for a linear body such as an optical fiber have been developed. For example, Patent Document 1 discloses a method for winding an optical fiber in which, as the number of winding layers of a spool around which a winding wire is wound increases, the traverse reverse position of the optical fiber with respect to the spool is moved in the outer direction of the flange of the spool.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2011-63381 Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] However, in the winding method described in Patent Document 1, since the traverse reverse position is controlled after the number of winding layers around the spool increases, it takes time until the winding diameter of the spool changes, and it is not easy to make the winding diameter of the spool uniform.

[0008] An object of the present disclosure is to provide a winding device for a linear body that can calculate the winding diameter of a spool during the winding of the linear body around the spool.

[0009] Solution to the Technical Problem

[0010] A winding device for a linear body includes:

[0011] a spool around which a linear body is wound;

[0012] a winding machine that rotates the spool; and

[0013] a guide roller that guides the linear body to the spool,

[0014] the spool reciprocally moves relative to the guide roller along the axial direction of the spool,

[0015] the winding device includes a processing device that calculates the winding diameter of the spool based on the relative movement speed of the spool with respect to the guide roller, the rotation speed of the spool, and the winding speed of the linear body.

[0016] Advantages of the Invention

[0017] According to the present disclosure, it is possible to calculate the winding diameter of a spool during the winding of a linear body around the spool. Brief Description of the Drawings

[0018] Figure 1 This is a diagram showing the overall structure of a winding device for a wire body according to an embodiment of the present disclosure.

[0019] Figure 2 This is a diagram of the winding spool viewed from the direction of arrow Y Figure 1 as shown.

[0020] Figure 3 This is a block diagram showing Figure 1 the structure of the processing device as shown.

[0021] Figure 4 This is a diagram for explaining a method of calculating the winding diameter of the winding spool by an arithmetic processing unit of the processing device as shown Figure 3 by the processing device. DETAILED DESCRIPTION

[0022] [Description of Embodiments of the Present Disclosure]

[0023] First, the contents of the embodiments of the present disclosure will be listed and described.

[0024] The wire body winding device of the present disclosure

[0025] (1) includes:

[0026] a spool for winding a wire body;

[0027] a winding machine for rotating the spool; and

[0028] a guide roller for guiding the wire body to the spool,

[0029] wherein the spool reciprocally moves relative to the guide roller along the axial direction of the spool,

[0030] and the winding device includes a processing device that calculates the winding diameter of the spool based on the relative movement speed of the spool relative to the guide roller, the rotation speed of the spool, and the winding speed of the wire body.

[0031] As described above, by using the relative movement speed of the spool relative to the guide roller, the rotation speed of the spool, and the winding speed of the wire body, the winding diameter of the spool can be calculated during the winding process of the wire body.

[0032] (2) In the wire body winding device of (1) above,

[0033] it may also be that the processing device obtains the rotation speed of the guide roller and calculates the winding speed of the wire body based on the rotation speed of the guide roller.

[0034] For example, by multiplying the rotational speed of the guide roller by the circumferential length of the guide roller, the linear velocity of the wire body in the guide roller can be calculated. Moreover, in this way, since the linear velocity of the wire body in the guide roller, that is, the linear velocity of the wire body immediately before being wound around the spool, can be calculated, the winding speed of the wire body can be obtained more accurately.

[0035] (3) The winding device for the wire body of (1) above,

[0036] It may also be that the winding device further includes a winch, the winch is disposed on the upstream side of the guide roller on the traveling path of the wire body, and controls the traveling speed of the wire body,

[0037] The processing device uses the traveling speed of the wire body in the winch as the winding speed of the wire body.

[0038] Here, since the wire body traveling on the winch is in close contact with the winch through a winch belt or the like, it is not easy to generate wire jitter or the like. For this reason, according to the above structure, the winding speed of the wire body can be obtained more stably.

[0039] (4) In the winding device for the wire body according to any one of (1) to (3) above,

[0040] It may also be that the processing device controls the reverse position of the relative movement of the spool with respect to the guide roller based on the newly calculated winding diameter and the winding diameter at the center in the axial direction of the spool.

[0041] In the winding device for the wire body according to the present disclosure, as described above, since the winding diameter of the spool can be calculated during the winding process of the wire body, the distribution of the winding diameter in the axial direction of the spool can be updated in real time. For this reason, based on the distribution of the winding diameter, the protrusions or depressions of the wire body near the flange of the spool can be eliminated, and control can be performed to make the winding diameter of the spool more uniform.

[0042] [Details of the Embodiment of the Present Disclosure]

[0043] Hereinafter, a specific example of the winding device for the wire body according to the embodiment of the present disclosure will be described with reference to the drawings. It should be noted that the present invention is not limited to these examples, but is represented by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims. In addition, in each of the drawings used in the following description, the scale has been appropriately changed to make each component of a recognizable size.

[0044] (Overall Structure of the Winding Device)

[0045] Figure 1 It is a diagram showing the overall structure of the winding device 100 for the wire body according to the embodiment of the present disclosure.Figure 2 as viewed in the direction of arrow Y Figure 1 a view of the winding spool 20 shown

[0046] Here, a winding device 100 for an optical fiber 1 as an example of a wire body will be described. As Figure 1 shown, the winding device 100 includes a supply unit 10, a plurality of capstans 11, a plurality of tension adjusting rollers 12, a plurality of guide rollers 13, a winding motor 14, a first detector 15, a traverse motor 16, a second detector 18, a winding spool 20, and a processing device 30.

[0047] In the winding device 100, the optical fiber 1 drawn out from the supply unit 10 is wound around the winding spool 20 via the plurality of capstans 11, the plurality of tension adjusting rollers 12, and the plurality of guide rollers 13 that guide the optical fiber 1 to the winding spool 20.

[0048] As Figure 2 shown, the winding spool 20 has a cylindrical main body portion 21 for winding the optical fiber 1, and two disc-shaped flange portions 22A and 22B provided at both ends of the main body portion 21. The winding spool 20 is Figure 1 driven by the winding motor (winder) 14 shown and rotates.

[0049] Referring again to Figure 1 , the first detector 15 connected to the rotation shaft of the winding motor 14 detects the rotational speed ft of the winding spool 20. If the first detector 15 detects the rotational speed ft of the winding spool 20, data representing the detected rotational speed ft is output to the processing device 30. It should be noted that, as described below, for example, based on the position of the tension adjusting roller 12 in the vertical direction, the processing device 30 controls the rotational speed ft of the winding spool 20.

[0050] In addition, the winding spool 20 is driven by the traverse motor 16 controlled by the processing device 30 and moves. More specifically, as Figure 2 shown, the winding spool 20 reciprocally moves relative to the guide roller 13 along the axial direction of the winding spool 20 at a predetermined traverse speed (moving speed) Vtrv.

[0051] It should be noted that Figure 1 the traverse motor 16 shown may be connected to the guide roller 13 (hereinafter referred to as "guide roller 13A") located at the position closest to the winding spool 20 on the traveling path of the optical fiber 1 instead of being connected to the winding spool 20. In this case, the guide roller 13A is driven by the traverse motor 16 and moves relative to the winding spool 20 along the axial direction of the winding spool 20 at a predetermined traverse speed Vtrv.

[0052] In addition, a second detector 18 for detecting the rotational speed of the guide roller 13A is connected to the guide roller 13A. If the second detector 18 detects the rotational speed of the guide roller 13A, data representing the detected rotational speed is output to the processing device 30.

[0053] (Structure of the processing device)

[0054] (a) Calculation of the winding diameter of the winding spool

[0055] Figure 3 is a block diagram showing Figure 1 the structure of the processing device 30 shown. As Figure 3 shown, the processing device 30 includes an acquisition unit 31, an arithmetic processing unit 32, a storage unit 33, and a control unit 34.

[0056] The acquisition unit 31 obtains various data from Figure 1 the first detector 15 and the second detector 18 shown respectively. More specifically, if the acquisition unit 31 obtains data representing the rotational speed ft of the winding spool 20 from the first detector 15, the acquired data is output to the arithmetic processing unit 32. In addition, if the acquisition unit 31 obtains data representing the rotational speed of the guide roller 13A from the second detector 18, the acquired data is output to the arithmetic processing unit 32.

[0057] If the arithmetic processing unit 32 receives data representing the rotational speed of the guide roller 13A from the acquisition unit 31, the winding speed Vt of the optical fiber 1 in the guide roller 13A is obtained by using the rotational speed of the guide roller 13A and the diameter of the guide roller 13A previously stored in the storage unit 33.

[0058] Specifically, the arithmetic processing unit 32 calculates the linear velocity of the optical fiber 1 in the guide roller 13A by multiplying the rotational speed of the guide roller 13A by the circumferential length of the guide roller 13A (= π × the diameter of the guide roller 13). Then, the arithmetic processing unit 32 uses the calculated linear velocity as the winding speed Vt of the optical fiber 1 relative to the winding spool 20 for the operations described below.

[0059] In this way, by calculating the linear velocity of the wire body in the guide roller 13A, that is, the linear velocity of the optical fiber 1 immediately before being wound around the winding spool 20, the winding speed Vt of the optical fiber 1 can be obtained more accurately.

[0060] In addition, the arithmetic processing unit 32 calculates the winding diameter D of the winding spool 20 based on the traverse speed Vtrv of the winding spool 20, the rotational speed ft of the winding spool 20 represented by the data output from the first detector 15, and the winding speed Vt of the optical fiber 1.

[0061] Figure 4 is used to Figure 3A diagram for explaining the method by which the arithmetic processing unit 32 of the processing device 30 shown calculates the winding diameter D of the bobbin 20. As Figure 4 shown, according to the Pythagorean theorem of velocities, the traverse velocity Vtrv (m / s) of the bobbin 20, the rotational speed ft (s -1 ) of the bobbin 20, the winding velocity Vt (m / s) of the optical fiber 1, and the winding diameter D (m) of the bobbin 20 satisfy the relationship of the following formula (1).

[0062] [Mathematical formula 1]

[0063] (Winding velocity) 2 =(Circumferential winding velocity) 2 +(Winding length direction velocity) 2

[0064]

[0065] Figure 3 As shown, based on the above formula (1), the arithmetic processing unit 32 can calculate the winding diameter D of the bobbin 20 as shown in the following formula (2) by using the traverse velocity Vtrv of the bobbin 20, the rotational speed ft of the bobbin 20, and the winding velocity Vt of the optical fiber 1.

[0066] [Mathematical formula 2]

[0067]

[0068] (b) Variant example of the method for obtaining the winding velocity of the optical fiber

[0069] The arithmetic processing unit 32 in the processing device 30 is not limited to a structure that calculates the linear velocity of the optical fiber 1 in the guide roller 13A as the winding velocity Vt of the optical fiber 1 for the calculation of the winding diameter D.

[0070] For example, the arithmetic processing unit 32 may also calculate the linear velocity VL of the optical fiber 1 controlled by the winch 11 (see Figure 1 ) disposed on the upstream side of the guide roller 13, and use the calculated linear velocity VL as the winding velocity Vt of the optical fiber 1 for the calculation of the winding diameter D.

[0071] Specifically, a detector (not shown) for detecting the rotational speed of the winch 11A is connected to the winch 11A located on the most downstream side among the plurality of winches 11 (hereinafter referred to as "winch 11A"). If the detector detects the rotational speed of the winch 11A, data representing the detected rotational speed is output to the processing device 30.

[0072] If the acquisition unit 31 in the processing device 30 acquires data representing the rotational speed of the winch 11A, the acquired data is output to the arithmetic processing unit 32.

[0073] If the operation processing unit 32 receives data indicating the rotational speed of the winch 11A from the acquisition unit 31, it calculates the linear velocity of the optical fiber 1 traveling on the winch 11A by multiplying the rotational speed of the winch 11A by the circumferential length of the winch 11A (= π × diameter of the winch 11A). Then, the operation processing unit 32 can use the calculated linear velocity as the winding speed Vt of the optical fiber 1 relative to the winding spool 20 for the calculation of the winding diameter D.

[0074] Here, when the traveling speed of the optical fiber 1 in the guide roller 13 is used as the winding speed Vt of the optical fiber 1, the optical fiber 1 may deviate from the bottom of the groove of the guide roller 13 due to reasons such as line jitter of the optical fiber 1. Moreover, in such a case, an accurate winding speed Vt of the optical fiber 1 cannot be obtained.

[0075] In contrast, the optical fiber 1 traveling on the winch 11 is in close contact with the winch 11 through a winch belt (not shown) or the like, so line jitter or the like is not likely to occur. For this reason, as described above, by calculating the linear velocity VL of the optical fiber 1 traveling on the winch 11, the winding speed Vt of the optical fiber 1 can be obtained more stably.

[0076] It should be noted that as Figure 1 shown, when a tension adjusting roller 12 is provided between the winch 11A and the guide roller 13, the linear velocity VL of the optical fiber 1 traveling on the winch 11A may change on the downstream side of the tension adjusting roller 12. For this reason, when the tension adjusting roller 12 is not provided between the winch 11A and the guide roller 13, the method of using the linear velocity VL of the optical fiber 1 traveling on the winch 11A when calculating the winding speed Vt is more effective.

[0077] (c) Control by the processing device

[0078] (c-1) Control of the rotational speed of the winding spool (tension adjustment control)

[0079] Referring again to Figure 1 and Figure 3 , the position of the tension adjusting roller 12A located on the most downstream side among the plurality of tension adjusting rollers 12 in the vertical direction is detected by a sensor (not shown), and data indicating the detected position of the tension adjusting roller 12A is sent to the processing device 30. If the acquisition unit 31 in the processing device 30 acquires this data, the acquired data is output to the control unit 34. Then, the control unit 34 controls the rotational speed ft of the winding spool 20 based on the position of the tension adjusting roller 12A in the vertical direction indicated by this data.

[0080] More specifically, when the tension adjusting roller 12A moves upward, the control unit 34 determines that the rotation speed ft of the winding bobbin 20 is fast, and controls it in a manner to decrease the rotation speed ft of the winding bobbin 20. On the other hand, when the tension adjusting roller 12A moves downward, the control unit 34 determines that the rotation speed ft of the winding bobbin 20 is slow, and controls it in a manner to increase the rotation speed ft of the winding bobbin 20.

[0081] In this way, by controlling the rotation speed ft of the winding bobbin 20 based on the position change of the tension adjusting roller 12A in the vertical direction (hereinafter referred to as "tension adjustment control"), the rotation speed ft of the winding bobbin 20 can be appropriately controlled.

[0082] (c-2) Control of the reverse position of the winding bobbin

[0083] The control unit 34 also controls the reverse position of the relative movement of the winding bobbin 20 with respect to the guide roller 13A in such a manner that the winding diameter D of the winding bobbin 20 is made uniform over the entire range of the main body portion 21 of the winding bobbin 20.

[0084] That is, the control unit 34 controls the reverse position in such a manner that the winding diameter D near the flange portions 22A, 22B of the winding bobbin 20 is made to coincide with the winding diameter D at a position in the main body portion 21 away from the flange portions 22A, 22B, specifically, at the center in the axial direction of the winding bobbin 20.

[0085] For example, the arithmetic processing unit 32 calculates the winding diameter D of the winding bobbin 20 at any time to update the distribution of the winding diameter D in real time. Then, based on the distribution of the winding diameter D, the arithmetic processing unit 32 obtains a value obtained by averaging the winding diameter D(x) within a specified range near the axial center of the main body portion 21 as the winding diameter D at the center of the main body portion 21, that is, the target value Dr of the winding diameter.

[0086] As described above, since the arithmetic processing unit 32 can update the distribution of the winding diameter D in real time, the target value Dr of the winding diameter can be updated during the period when the optical fiber 1 is wound within the above-mentioned specified range. Then, the arithmetic processing unit 32 periodically outputs the latest winding diameter D (hereinafter referred to as "the current winding diameter D") and the updated target value Dr to the control unit 34.

[0087] If the control unit 34 acquires the current winding diameter D and the target value Dr, it determines the reverse position of the winding bobbin 20 based on the current winding diameter D and the target value Dr. For example, when the current winding diameter D is smaller than the target value Dr, the control unit 34 determines the reverse position in such a way that the reverse position is closer to the flange portion 22A or the flange portion 22B side. On the other hand, when the current winding diameter D is larger than the target value Dr, the control unit 34 determines the reverse position in such a way that the reverse position is closer to the center of the main body portion 21.

[0088] In addition, as shown in Equation (3), the control unit 34 may also perform control to make the winding diameter D closer to the target value Dr based on the current winding diameter D and the target value Dr.

[0089] Specifically, as Figure 2 shown, a portion located axially outside the flange portion 22B on the winding bobbin 20 is set as the reference position. In addition, the distance from the reference position of the winding bobbin 20 to the reverse position is set as "L" (m). The control unit 34 may also determine the reverse position of the winding bobbin 20 in such a way that the distance L is proportional to the sum of the difference ΔD (= Dr - D) between the current winding diameter D (m) and the target value Dr (m), the value obtained by integrating the difference ΔD with respect to time (s) and dividing by the integration time Ti (s), and the value obtained by differentiating the difference ΔD with respect to time (s) and multiplying by the differentiation time Td (s). In Equation (3), "ΔL" (m) is the change amount of "L", and "k1" (dimensionless) is a coefficient.

[0090] [Mathematical formula 3]

[0091]

[0092] In addition, the control unit 34 outputs a control signal to the Figure 1 shown traverse motor 16 so that the moving direction of the winding bobbin 20 is reversed at the determined reverse position. As a result, the winding bobbin 20 reverses its moving direction at the reverse position determined by the control unit 34. As a result, the newly calculated winding diameter D approaches the target value Dr.

[0093] It should be noted that instead of the winding bobbin 20, in the case where the guide roller 13A reciprocates relative to the winding bobbin 20, similarly, the control unit 34 determines the reverse position of the moving direction of the guide roller 13A by the method described above. Then, the control unit 34 outputs a control signal to the traverse motor 16 that controls the drive of the guide roller 13A so that the moving direction of the guide roller 13A is reversed at the determined reverse position.

[0094] However, as described above, in the winding method described in Patent Document 1, since the traverse reverse position is controlled after the number of winding layers wound around the spool increases, it takes time until the winding diameter of the spool changes, and it is not easy to make the winding diameter of the spool uniform.

[0095] In addition, based on the position change of the tension adjusting roller 12A in the vertical direction, the reverse position of the relative movement of the winding spool 20 with respect to the guide roller 13A can be controlled. Specifically, when the tension adjusting roller 12A moves upward, it is determined that the winding diameter D of the optical fiber 1 in the winding spool 20 becomes larger, and the control is performed in such a way that the reverse position moves away from the flange portion 22A or the flange portion 22B. On the other hand, when the tension adjusting roller 12A moves downward, it is determined that the winding diameter D of the optical fiber 1 in the winding spool 20 becomes smaller, and the control is performed in such a way that the reverse position approaches the flange portion 22A or the flange portion 22B.

[0096] However, when controlling the reverse position by such a method, as in the winding method described in Patent Document 1, it sometimes takes time until the winding diameter D of the winding spool 20 is affected. In addition, when performing such control at high speed, sometimes even when a protrusion or depression of the optical fiber 1 occurs in the winding spool 20, the position of the tension adjusting roller 12A does not change, and it is not easy to make the winding diameter D of the optical fiber 1 in the winding spool 20 uniform.

[0097] In contrast, in the winding device 100 for the optical fiber 1 according to the present disclosure, as described above, by using the relative traverse speed Vtrv of the winding spool 20 with respect to the guide roller 13A, the rotation speed ft of the winding spool 20, and the winding speed Vt of the optical fiber 1, the winding diameter D of the winding spool 20 can be calculated during the winding process of the optical fiber 1.

[0098] For this reason, the distribution of the winding diameter D can be updated in real time. Moreover, based on such a distribution of the winding diameter D, the reverse position of the relative movement of the guide roller 13A with respect to the winding spool 20 can be controlled more appropriately, so that the optical fiber 1 is wound around the winding spool 20 uniformly.

[0099] In addition, since the acquisition of the parameters for stabilizing the winding state of the winding spool 20 is advanced, the position of the tension adjusting roller 12A is stable, and the winding tension of the optical fiber 1 can be stabilized.

[0100] It should be noted that, in the above-described embodiment, as an example of the winding device for the wire body of the present disclosure, the winding device 100 for the optical fiber 1 has been described, but the winding device for the wire body of the present disclosure can also be used for wire bodies other than the optical fiber 1.

[0101] As described above, the present invention has been described in detail with reference to specific embodiments. However, it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the present invention. In addition, the number, position, shape, etc. of the components described above are not limited to the above embodiments, and can be changed to the number, position, shape, etc. that are preferable when implementing the present invention.

[0102] Description of Reference Numerals

[0103] 1 Optical fiber (line body)

[0104] 10 Supply unit

[0105] 11, 11A Winch

[0106] 12, 12A Tension adjusting roller

[0107] 13, 13A Guide roller

[0108] 14 Winding motor (winder)

[0109] 15 First detector

[0110] 16 Lateral movement motor

[0111] 18 Second detector

[0112] 20 Winding spool

[0113] 21 Main body part

[0114] 22A, 22B Flange part

[0115] 30 Processing device

[0116] 31 Acquisition unit

[0117] 32 Arithmetic processing unit

[0118] 33 Storage unit

[0119] 34 Control unit

[0120] 100 Winding device

[0121] D, D(x) Winding diameter

[0122] Dr Target value

[0123] ft Rotational speed of the winding spool

[0124] VL Linear velocity of the optical fiber

[0125] Vt Winding speed.

Claims

1. A winding device for a linear body, comprising: a spool for winding the linear body; a winding machine for rotating the spool; and a guide roller for guiding the linear body to the spool, wherein the spool reciprocally moves relative to the guide roller along the axial direction of the spool, and the winding device is provided with a processing device that calculates the winding diameter of the spool based on the relative moving speed of the spool relative to the guide roller, the rotational speed of the spool, and the winding speed of the linear body.

2. The winding device for a linear body according to claim 1, wherein the processing device obtains the rotational speed of the guide roller and calculates the winding speed of the linear body based on the rotational speed of the guide roller.

3. The winding device for a linear body according to claim 1, wherein the winding device is further provided with a winch, which is arranged on the upstream side of the guide roller in the traveling path of the linear body and controls the traveling speed of the linear body, and the processing device uses the traveling speed of the linear body in the winch as the winding speed of the linear body.

4. The winding device for a linear body according to any one of claims 1 to 3, wherein the processing device controls the reverse position of the relative movement of the spool relative to the guide roller based on the newly calculated winding diameter and the winding diameter at the center in the axial direction of the spool.

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