JP2012131605A - Linear body storing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linear body storing device keeping constant the tension of a linear body at an outlet side of the linear body storing device according to the variation of the winding speed of the linear body by a winding machine, consequently keeping constant the tensions of the linear body at the outlet and inlet sides of the linear body storing device, respectively.SOLUTION: The linear body storing device 10 includes a fixed sheave 14 rotatably supported on a rotary driven fixed sheave support shaft 13 via a bearing, a movable sheave 19 rotatably supported on a fixed shaft 18 via a bearing and approachingly/separatingly provided in relation to the fixed sheave 14, a traction unit 21 pulling the movable sheave 19 in the separating direction in relation to the fixed sheave 14, and control means 25-27 controlling the rotation speed of the fixed sheave support shaft 13 on the basis of the winding speed Vof the linear body by the winding machine 6 so as to keep constant the tension of the linear body 2 between the fixed sheave 14 and the winding machine 6 according to the variation of the winding speed of the linear body 2 by the winding machine 6.

Description

  The present invention is installed, for example, between a take-up machine and a winder in a covered wire production line, and temporarily stores a linear body (covered wire) sent from the take-up machine and sent to the winder. The present invention relates to a linear body storage device.

  The linear body storage device (linear body accumulator) is installed, for example, between a take-up machine and a winder in a covered wire production line (covered wire production device), and a fully wound winding bobbin is emptied. It is used for the purpose of continuous operation without stopping the covered wire production line by temporarily storing the wire continuously fed to the winder during switching to the winding bobbin .

  Conventionally, an accumulator tension adjusting device proposed in Japanese Patent Laid-Open No. 58-212566 (Patent Document 1) is known as this type of device. The tension adjusting device includes a torque motor for applying tension to a wire wound around a fixed wheel (fixed sheave) and a moving wheel (moving sheave) of an accumulator, and a movement detector that detects an output change of the torque motor. And a voltage regulator for switching the driving voltage of the torque motor on the side where the tension of the electric wire is made constant by the command of the movement detector.

In this tension adjusting device, the tension of the electric wire between the fixed wheel and the moving wheel is made constant, the speed of the electric wire fed into the accumulator is V ₁ , and the speed of the electric wire drawn out from the accumulator is V _2. Then, when V ₁ = V ₂ , a tension set in advance by the torque motor is applied to the electric wire between the two wheels, and this tension is maintained. Next, when V ₁ > V ₂ , as in the case where the fully wound winding bobbin is switched to an empty winding bobbin, the accumulator is switched to the storage operation and the moving wheel is separated from the fixed wheel. At this time, the output torque of the torque motor is decreased to prevent the tension of the electric wire between the wheels from increasing. Further, when V ₁ <V ₂ , the accumulator is switched to the release operation (disconnection operation), and the moving wheel moves in a direction approaching the fixed wheel. At this time, the output torque of the torque motor is increased, The electric wire tension between the two wheels is prevented from decreasing.

Here, in the linear body storage device, the speed of the linear body fed into the linear body storage device is V ₁ , and the tension of the linear body (the linear body on the entry side of the linear body storage device). T ₁ ), the speed of the linear body drawn from the linear body storage device is V ₂ , and the tension of the linear body (the tension of the linear body on the exit side of the linear body storage device) is T when _2, but when the V 1 = _{V 2} (at equilibrium), the _{T 1} and _{T 2} are constant, respectively _{(T 1} ≠ _T 2). On the other hand, when the winding speed V ₂ is decelerated for storage, and V ₁ > V ₂ , if tension control is not performed, T ₁ increases from equilibrium, and conversely T ₂ decreases from equilibrium. Further, by accelerated to winding speed V ₂ for actinomycetes when V _{1 <V 2} is to be carried out the tension control, T ₁ decreases from at equilibrium, T ₂ conversely increases from at equilibrium.

  Therefore, in the linear body storage device, the tension and the exit side of the linear body on the entry side of the linear body storage device are independent of the state of the entry and exit lines of the linear body during equilibrium, storage and release. It is important to keep the tension of the linear body at a constant value while suppressing fluctuations in tension. In this case, in the linear body storage device, generally, when the wire is released (at the time of rewinding), the tension on the exit side of the linear body storage device is increased, so that the thin linear body, In a linear body with a high production rate, the linear body is likely to be stretched, and the tension on the entry side of the linear body storage device is reduced, so that the linear body is transferred to the linear body storage device. The linear body slip easily occurs in the feeding device (the take-up machine on the upstream side of the linear body storage device).

  The accumulator tension adjusting device proposed in Patent Document 1 described above changes the output torque of the torque motor so that the tension of the electric wire between the fixed wheel and the moving wheel of the accumulator becomes constant. From the above, according to the change in the winding speed of the linear body by the winder (regardless of the change in the winding speed), the wire tension on the inlet side of the accumulator and the wire tension on the outlet side must be kept constant. It was difficult.

Japanese Patent Laid-Open No. 58-212566

  Accordingly, an object of the present invention is to provide the tension of the linear body on the exit side of the linear body storage device according to the change in the winding speed of the linear body by the winder, and thus the exit side of the linear body storage device. In addition, the tension of the linear body on the inlet side and the linear body on the entry side can be kept constant, so that even if the linear body is thin and the production speed is high, the wire of the linear body on the outlet side of the linear body storage device can be maintained. A linear body that prevents stretching and prevents the linear body from slipping in the apparatus that sends the linear body to the linear body storage device, thereby enabling stable operation of the linear body production line. It is to provide a storage device.

  In order to solve the above problems, the present invention takes the following technical means.

  The invention according to claim 1 is a linear body for temporarily storing a linear body that is installed on the upstream side of the winder and that is sent from the upstream side of the installation position and sent to the winder. In a storage device, a fixed sheave that is rotatably supported by a fixed sheave support shaft that is driven to rotate, and a linear sheave that guides the linear body so as to enter and exit, and a fixed shaft that is rotatably supported by a bearing. And a movable sheave that is provided so as to be close to and away from the fixed sheave and guides the linear body to store, and a traction that pulls the movable sheave away from the fixed sheave. The linear body by the winder so as to keep the tension of the linear body between the fixed sheave and the winder constant according to the change in the winding speed of the linear body by the unit and the winder Rotation of the fixed sheave support shaft based on the winding speed of And control means for controlling a linear body 貯線 apparatus characterized by comprising a.

  According to a second aspect of the present invention, there is provided the linear body storage device according to the first aspect, wherein the control means is configured to determine whether the winding speed of the linear body by the winder is constant or decelerated from the position information of the moving sheave. Each speed state is judged, and when the winding speed of the linear body is constant, the peripheral speed of the fixed sheave is equal to or faster than the winding speed of the linear body. The rotational speed of the fixed sheave support shaft is controlled so that the speed is increased by a predetermined constant value. When the winding speed of the linear body is in a decelerating state, the peripheral speed of the fixed sheave is set to be the winding speed of the linear body. The rotational speed of the fixed sheave support shaft is adjusted so as to be a speed obtained by subtracting a speed component in accordance with the moving acceleration of the moving sheave from a taking speed or a speed that is larger than the winding speed by a predetermined value. And the winding speed of the linear body is increased In this case, a speed component corresponding to the moving acceleration of the moving sheave is set so that the peripheral speed of the fixed sheave is equal to the winding speed of the linear body or a speed larger than the winding speed by a predetermined value. The number of rotations of the fixed sheave support shaft is controlled so that the added speed is obtained.

  According to a third aspect of the present invention, in the linear body storage device according to the first aspect, the control means is configured such that the peripheral speed of the fixed sheave is equal to or equal to the winding speed of the linear body. The number of rotations of the fixed sheave support shaft is controlled so that the speed is increased by a predetermined constant value.

  Invention of Claim 4 is the linear body storage apparatus as described in any one of Claims 1-3, The said fixed sheave is comprised from several sheave piece, Among these sheave pieces, The bearing of each sheave piece located in the region 2/3 from the linear body outlet side between the linear body outlet and the linear body outlet has a larger rotational resistance than the bearing of each sheave piece located in the remaining region. It is characterized by being.

  The linear body storage device according to the present invention is not a stationary sheave that guides a linear body so as to enter and exit, but is supported not by a stationary shaft through a bearing but by a rotational drive. A linear sheave between the fixed sheave and the winder is provided according to a change in the winding speed of the linear body by the winder by the control means. The rotational speed of the fixed sheave support shaft is controlled based on the winding speed of the linear body by the winder so as to keep the tension of the fixed sheave constant.

  Accordingly, the rotation of the fixed sheave support shaft can transmit a force to the fixed sheave through the rotational resistance of the bearing so as to suppress fluctuations in the tension of the covered electric wire between the fixed sheave and the winder. The tension of the covered wire between the fixed sheave and the winder according to the change in the winding speed of the covered wire by the winder, and consequently the amount of the covered wire between the device that sends the wire to the wire storage device and the fixed sheave Each tension can be kept constant. As a result, it is possible to prevent the wire elongation between the fixed sheave and the winder even with a thin and fast production speed, and to prevent the covered wire from slipping in the device that sends the coated wire to the fixed sheave. Therefore, stable operation of the coated wire production line can be performed.

It is a figure which shows roughly the structure of the covered electric wire manufacturing line (covered electric wire manufacture) provided with the linear body storage apparatus of this invention. It is a top view which shows roughly the structure of the linear body storage apparatus in FIG. It is sectional drawing which shows the principal part of the fixed sheave in FIG. It is a figure for demonstrating rotation control of the fixed sheave support shaft in the linear body storage apparatus of FIG. It is a top view which shows roughly the structure of the linear body storage apparatus by another embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram schematically showing the configuration of a covered wire production line (covered wire production) provided with the linear body storage device of the present invention.

As shown in FIG. 1, an electric wire 1 fed from a feeder (not shown) while being pulled by a take-up machine 5 is covered with an insulating resin by a crosshead of an extruder 3 to become a covered electric wire 2. The covered electric wire (linear body) 2 is cooled in the cooling water tank 4 and guided to the take-up machine 5. Then, the covered electric wire 2 from the take-up machine 5 is sent to the linear body storage device 10 described later provided with the fixed sheave 14 and the moving sheave 19 at the take-up speed V ₁ , and this linear body storage line. through the apparatus 10 is adapted to be fed to the winder 6 by the winding speed V _2. Note that an encoder 25 that measures the drum rotation speed from the start of winding of the winding drum is attached to the winding drum drive shaft of the winding machine 6.

  2 is a plan view schematically showing the configuration of the linear body storage device in FIG. 1, and FIG. 3 is a cross-sectional view showing the main part of the fixed sheave in FIG.

  In FIG. 2, reference numeral 11 denotes a base, and an electric motor 12 is fixed to the upper surface of the base 11 extending horizontally and elongated via a bracket. A fixed sheave support shaft 13 is coupled to the motor shaft of the electric motor 12 via a coupling.

  Reference numeral 14 denotes a fixed sheave that guides the covered electric wire 2 so as to enter and exit. The fixed sheave 14 includes a plurality of sheave pieces 15 having bearings 15a, the plurality of sheave pieces 15 being arranged close to each other at a minute interval, and the fixed sheave support shaft that is rotationally driven by the electric motor 12. 13 is rotatably supported by the bearing 15a (see FIG. 3). Each sheave piece 15 is formed by fixing an annular sheave piece main body 15c to an annular boss 15b to which a bearing 15a having a rolling ball is mounted (see FIG. 3), and on the outer periphery of the sheave piece main body 15c. Are provided with a V-shaped groove forming portion (not shown) for guiding the covered electric wire 2 (see FIG. 2).

  Further, a carriage traveling rail 16 is fixed to the upper surface of the base 11, and the carriage traveling rail 16 has a traveling wheel without a driving source, and can move close to and away from the stationary sheave 14. A carriage 17 is attached.

  19 has the same number of sheave pieces 20 having bearings (not shown) as the fixed sheave 14, and these sheave pieces 20 are arranged close to each other at a minute interval so as to store the covered electric wire 2. It is a moving sheave to guide to. The moving sheave 19 is rotatably supported by a fixed shaft 18 fixed to the moving carriage 17, and thereby can move toward and away from the fixed sheave 14.

  Reference numeral 21 denotes a traction unit that pulls the moving sheave 19 with a constant force determined in a direction away from the fixed sheave 14. The traction unit 21 includes a wire rope 22 having one end connected to the movable carriage 17 that supports the movable sheave 19, a drum 23 that winds the wire rope 22, and a traction electric motor 24 that rotationally drives the drum 23. I have. An encoder 26 for obtaining position information of the moving sheave 19 is attached to the drum drive shaft of the drum 23.

Thus, the fixed sheave 14, the moving sheave 19, and the traction unit 21 are provided, and the covered electric wire 2 from the take-up machine 5 is alternately hung on the fixed sheave 14 and the moving sheave 19, and the inlet side of the fixed sheave 14. The wire enters from the sheave piece, reciprocates a predetermined number of times while moving sequentially along the axial direction between the fixed sheave 14 and the moving sheave 19, exits from the sheave piece at the outlet side of the fixed sheave 14, and goes to the winder 6. Led. In this case, the moving sheave 19 is pulled by the traction unit 21 in a direction away from the fixed sheave 14 with a constant force. Therefore, at the normal time when the incoming and outgoing lines of the covered electric wire 2 are balanced (take-up speed V ₁ = winding speed V ₂ ), the moving sheave 19 is stationary at a predetermined normal position, When the take-up speed is reduced and the take-up speed V ₁ > take-up speed V ₂ (including V ₂ = 0) due to replacement of the take-up bobbin, the moving sheave 19 moves in a direction away from the fixed sheave 14. Then, the covered electric wire 2 is stored. When the take-up bobbin replacement is completed and the take-up speed is increased for the release, and the take-up speed V ₁ <the take-up speed V ₂ , the moving sheave 19 moves in the direction closer to the fixed sheave 14. The covered electric wire 2 temporarily stored is released. When the radiation is finished and the normal take-up speed V ₁ = winding speed V ₂ , the moving sheave 19 returns to the normal position and stops.

27, constant for winding speed V ₂ of the covered wires 2 by the winder 6 state, a deceleration state, to determine the respective states of the speed increasing state, while the fixed sheave 14 and winder 6 Despite these respective states of as the tension T ₂ of the covered wires of constant, a controller for rotating the fixed sheave support shaft 13 at a rotational speed N determined by the following equation (1). In the equation (1), D is the diameter of the fixed sheave 14, A is a constant of 0 or more, α is the moving acceleration of the moving sheave 19, and K is a positive constant. The moving acceleration α of the moving sheave 19 is set to be positive when the moving sheave 19 moves in a direction away from the fixed sheave 14 and negative when moving in a direction closer to the fixed sheave 14. .

N = ((V ₂ + A) / (D × π)) × (1−α × K) (1)

The controller 27 reads, from the encoder 25 attached to the winding drum drive shaft of the winding machine 6, the drum rotation speed from the winding start of the winding drum at predetermined short time intervals. calculating the winding speed V ₂ of the covered wires 2 by the winding machine 6. Further, the controller 27 reads the position information of the moving sheave 19 from the encoder 26 attached to the drum drive shaft of the drum 23 of the traction unit 21 at predetermined short time intervals, and differentiates the position information each time. Then, the moving speed S of the moving sheave 19 is calculated, and the winding speed V ₂ of the covered electric wire 2 is determined from the moving speed S in a certain state (including V ₂ = 0), a deceleration state, and an acceleration state. Further, the moving speed S of the moving sheave 19 is calculated by differentiating the moving speed S.

Then, the controller 27 uses the calculated winding speed V ₂ and the movement acceleration α of the moving sheave 19 (α = 0 when the winding speed V ₂ of the covered electric wire ₂ is in a constant state). Is calculated, and the fixed sheave support shaft 13 is rotated at the rotation speed N. The controller 27 and the encoder 25 and 27, the tension T ₂ of the covered wire between the fixed sheave 14 and the winder 6 is constant in response to changes in the winding speed V ₂ of the covered wires 2 by the winding machine 6 as described above, constitute a control means for controlling the rotational speed N of the fixed sheave support shaft 13 on the basis of the winding speed V ₂ of the covered wires 2 by the winding machine.

  Hereinafter, the operation of the linear body storage device 10 configured as described above will be described with reference to FIGS. FIG. 4 is a diagram for explaining the rotation control of the fixed sheave support shaft in the linear body storage device of FIG.

In the operation of the covered wire production line, as shown in FIG. 4A, the winding speed V ₂ of the covered wire 2 changes with respect to the take-up speed V ₁ , and the take-up speed V ₂ = the take-up speed V _1. From the normal state, the storage state (including the winding speed V ₂ = 0) where the winding speed V ₂ <take-up speed V ₁ is reached, and then the release state where the winding speed V ₂ > take-up speed V ₁ After that, the normal state where the winding speed V ₂ = take-up speed V ₁ is returned.

Then, as the winding speed V ₂ changes with respect to the take-up speed V ₁ as described above, the moving sheave 19 moves as described above, and the position of the moving sheave 19 is as shown in FIG. It changes as shown. Further, the moving speed S of the moving sheave 19 changes as shown in FIG. 4C, and the moving acceleration α of the moving sheave 19 changes as shown in FIG. 4B.

Then, the controller 27, when the winding speed V ₂ of the covered wire 2 is constant state (alpha = 0), the circumferential speed of the fixed sheave 14 (N × D × π) is, the winding speed of the covered electric wire 2 V ₂ the same speed (V _2), or calculates the rotational speed N of the winding speed V by a constant value which is predetermined from ₂ greater speed (V 2 _{+ a)} become as fixed sheave supporting shaft 13, this The fixed sheave support shaft 13 is rotated at the rotation speed N.

Thus, when the winding speed V ₂ of the covered wire 2 is constant state, by the fixed sheave 14 is rotated synchronously to the winding speed V _2, the covered wires between the fixed sheave 14 and winder 6 2 is restrained from causing a fluctuation in tension. At the same time, as a result, fluctuations in tension are suppressed in the covered electric wire 2 between the take-up machine 5 and the fixed sheave 14.

The controller 27, when the winding speed V ₂ of the covered wire 2 is in the deceleration state, the peripheral speed of the fixed sheave 14 (N × D × π) is the winding speed V ₂ of the covered wires 2 or the winding, A speed (V ₂ −V ₂ × α × K, or a speed obtained by subtracting a speed component corresponding to the moving acceleration α of the moving sheave 19 from a speed (V ₂ + A) that is larger than the taking speed V ₂ by a predetermined value. The rotation speed N of the fixed sheave support shaft 13 is calculated so as to be (V ₂ + A) − (V ₂ + A) × α × K), and the fixed sheave support shaft 13 is rotated at this rotation speed N.

Thus, when the winding speed V ₂ of the covered wire 2 is in the deceleration state, by the braking force through the rotational resistance of the bearing 15a to the fixed sheave 14 which is rotating by coating the wire 2 passes is transmitted it is suppressed that the tension T ₂ of the covered wires 2 between the fixed sheave 14 and the winder 6 is decreased, the tension T ₂ of the covered wires 2 between the fixed sheave 14 and the winder 6 is kept constant . At the same time, holding the result, it is suppressed that the tension T ₁ of the covered wires 2 between winder 5 and the fixed sheave 14 is increased, the tension T ₁ of the covered wires 2 between winder 5 and the fixed sheave 14 is constant Is done.

The controller 27, when the winding speed V ₂ of the covered wire 2 is in the speed increasing state, the peripheral speed of the fixed sheave 14 (N × D × π) is the winding speed V ₂ of the covered wires 2, or the A speed (V ₂ + V ₂ × α × K or (V ₂ + A) obtained by adding a speed component corresponding to the moving acceleration α of the moving sheave 19 to a speed that is larger than the winding speed V ₂ by a predetermined constant value A. ) + (V ₂ + A) × α × K), the rotational speed N of the fixed sheave support shaft 13 is calculated, and the fixed sheave support shaft 13 is rotated at this rotational speed N.

Thus, when the winding speed V ₂ of the covered wire 2 is in the speed increasing state, the urging force through the rotational resistance of the bearing 15a to the fixed sheave 14 which is rotating by coating the wire 2 passes is transmitted in, it is suppressed that the tension T ₂ of the covered wires 2 between the fixed sheave 14 and the winder 6 is increased, the tension T ₂ of the covered wires 2 between the fixed sheave 14 and the winder 6 is held constant The At the same time, holding the result, it is suppressed that the tension T ₁ of the covered wires 2 between winder 5 and the fixed sheave 14 decreases, the tension T ₁ of the covered wires 2 between winder 5 and the fixed sheave 14 is constant Is done.

As described above, the linear body storage device 10 according to this embodiment is not fixedly supported by the fixed shaft via the bearing as a fixed sheave, but is rotatably supported by the electric motor 12. 13 is provided with a fixed sheave 14 that is rotatably supported via a bearing 15a, and the control means 25, 26, 27 takes up the moving acceleration α of the moving sheave and takes up the covered wire 2 by the winder 6. so as to control the rotational speed of the fixed sheave support shaft 13 based on the speed V _2.

Therefore, a force is transmitted to the fixed sheave 14 by the rotation of the fixed sheave support shaft 13 through the rotational resistance of the bearing 15a so as to suppress the tension fluctuation of the covered electric wire 2 between the fixed sheave 14 and the winder 6. As a result, the tension T ₂ of the covered wire 2 between the fixed sheave 14 and the winder 6 according to the change in the winding speed V ₂ of the covered wire 2 by the winder 6, and consequently the take-up device 5 and the fixed sheave. it is possible to keep the tension T ₁ of the covered wires 2 between 14 constant, respectively. As a result, it is possible to prevent the wire extension between the fixed sheave 14 and the winder 6 even with the coated wire 2 that is thin and has a high production speed, and at the take-up machine 5 that sends the coated wire 2 to the fixed sheave 14. The occurrence of slip of the covered electric wire 2 can be prevented, and the covered electric wire production line can be stably operated.

  FIG. 5 is a plan view schematically showing a configuration of a linear body storage device according to another embodiment of the present invention. The linear body storage device 10 ′ according to this embodiment includes a controller 28 having a function different from that of the controller 27, while the linear body storage apparatus 10 ′ according to the first embodiment is not provided with the encoder 26. Since it is the same structure as the apparatus 10, the same code | symbol is attached | subjected to the common part of both, description is abbreviate | omitted, and a different point is demonstrated.

  In FIG. 5, reference numeral 28 denotes a controller for rotating the fixed sheave support shaft 13 at a rotational speed N determined by the following equation (2).

N = (V ₂ + A) / (D × π) (2)

That is, the controller 28, the winding speed V ₂ is a constant state of the covered electric wire 2, the deceleration state, regardless of the speed increasing state, the peripheral speed of the fixed sheave 14 (N × D × π) is the winding of the coated wire 2 velocity V ₂ at the same speed (V _2), or it calculates the rotational speed N of the winding speed V by a constant value which is predetermined from ₂ greater speed (V 2 _{+ a)} become as fixed sheave supporting shaft 13, The fixed sheave support shaft 13 is rotated at this rotational speed N.

Thus, by rotating synchronously fixed sheave support shaft 13 in the winding speed V _2, when the winding speed V ₂ is increased at the time of easily frequently linear elongation of the covered wire 2 actinomycetes, fixed sheave It is possible to suppress an increase in the tension T ₂ of the covered electric wire 2 between 14 and the winder 6, and to prevent the covered electric wire 2 from being stretched.

In the above formula (2), when the winding speed V ₂ <the take-up speed V ₁ , N = (V ₁ + A) / (D × π), and when the take-up speed V ₂ ≧ the take-up speed V ₁ , The fixed sheave support shaft 13 may be rotated as N = (V ₂ + A) / (D × π).

  Next, in the linear body storage devices 10 and 10 ′, the fixed sheave 14 is a covered wire outlet between the covered wire outlet and the covered wire inlet among the plurality of sheave pieces constituting the fixed sheave. It is preferable that the bearing of each sheave piece located in the region of 2/3 from the side has a larger rotational resistance than the bearing of each sheave piece located in the remaining region. For example, of the 12 sheave pieces, the bearings of 8 sheave pieces located in the region of 2/3 from the covered wire outlet side between the covered wire outlet and the covered wire inlet remain by using hard grease. The rotational resistance is greater than that of the four sheave piece bearings located in the region.

  In general, in a fixed sheave, the sheave piece located near the outlet of the covered electric wire is more accelerated and decelerated at the rotational speed, and the sheave piece located at the inlet of the covered electric wire is not accelerated or decelerated at the rotational speed. Therefore, according to the fixed sheave as described above, the fluctuation of the tension of the covered electric wire 2 between the fixed sheave and the winder is controlled by the rotation of the fixed sheave support shaft through the rotational resistance of the bearing. Force can be transmitted more effectively.

DESCRIPTION OF SYMBOLS 2 ... Covered electric wire 3 ... Extruder 4 ... Cooling water tank 5 ... Take-up machine 6 ... Winding machine 10, 10 '... Linear body storage device 11 ... Base 12 ... Electric motor 13 ... Fixed sheave support shaft 14 ... Fixed sheave DESCRIPTION OF SYMBOLS 15 ... Sheave piece 15a ... Bearing 15b ... Circular boss | hub 15c ... Sheave piece main body 16 ... Carriage travel rail 17 ... Moving carriage 18 ... Fixed shaft 19 ... Moving sheave 20 ... Sheave piece 21 ... Traction unit 22 ... Electric motor for traction 23 ... Drum 24 ... Wire rope 25,26 ... Encoder 27,28 ... Controller

Claims (4)

In the linear body storage device for temporarily storing the linear body that is installed on the upstream side of the winding machine and is sent from the upstream side of this installation position and sent to the winding machine,
A fixed sheave that is rotatably supported via a bearing on a fixed sheave support shaft that is driven to rotate, a fixed sheave that guides a linear body so as to enter and exit, and a fixed shaft that is rotatably supported via a bearing. A moving sheave that is provided so as to be close to and away from the fixed sheave and guides the linear body to store, a traction unit that pulls the moving sheave away from the fixed sheave, and the winding The winding speed of the linear body by the winder is adjusted so that the tension of the linear body between the fixed sheave and the winder is kept constant according to the change in the winding speed of the linear body by the winder. And a control means for controlling the number of rotations of the fixed sheave support shaft based on the linear body storage device.   The control means determines each state of a linear body winding speed by the winder from a position information of the moving sheave, a constant state, a deceleration state, and an acceleration state, and the linear body winding speed is constant. When in a state, the rotational speed of the fixed sheave support shaft is such that the peripheral speed of the fixed sheave is the same speed as the winding speed of the linear body, or a speed that is higher by a predetermined value than the winding speed. When the winding speed of the linear body is in a decelerating state, the peripheral speed of the fixed sheave is from the winding speed of the linear body or from a speed that is larger than the winding speed by a predetermined value. The rotational speed of the fixed sheave support shaft is controlled so that the speed component corresponding to the moving acceleration of the moving sheave is reduced, and when the winding speed of the linear body is in the accelerated state, the fixed sheave The peripheral speed of the Alternatively, the rotational speed of the fixed sheave support shaft is controlled so as to be a speed obtained by adding a speed component corresponding to the moving acceleration of the moving sheave to a speed that is larger than the winding speed by a predetermined value. The linear body storage device according to claim 1.   The control means rotates the fixed sheave support shaft so that the peripheral speed of the fixed sheave is the same speed as the winding speed of the linear body or a speed larger than the winding speed by a predetermined value. The linear body storage device according to claim 1, wherein the number is controlled.   The fixed sheave is composed of a plurality of sheave pieces, and among these sheave pieces, each sheave located in a region 2/3 from the linear body outlet side between the linear body outlet and the linear body inlet. The linear body storage device according to any one of claims 1 to 3, wherein the bearing of the piece has a rotational resistance larger than that of the bearing of each sheave piece located in the remaining region.

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