JPH07110741B2 - Wire winding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for a linear body such as a plastic optical fiber, and more particularly, to detecting the flange of a winding bobbin to detect the linear body. The present invention relates to a technique for switching the winding direction.

<Prior Art> Conventionally, in this type of winding device for a linear body, the linear body is guided by a traverse guide roller that reciprocates in the axial direction of the winding bobbin and is wound around the bobbin. The traverse guide roller can be switched in the moving direction at the flange of the winding bobbin, but if this switching timing is too early,
As shown in FIG. 3 (a), a portion where the linear body is not wound occurs on the flange end face, which causes a problem that the winding laminated state is disturbed, that is, a so-called edge drop state occurs. On the other hand, if the switching timing is too late, the linear body is excessively wound around the flange end face as shown in FIG. 3 (b), and the laminated state is disturbed, resulting in a so-called ear height state.

Therefore, in order to eliminate such a disorder of the laminated state, as described in JP-A-58-42563, a pair of a light emitter and a light receiver are provided on the extension line of the linear body of the traverse guide roller. There has been proposed a winding device in which an optical sensor provided is provided to detect the flange portion of the winding bobbin and switch the moving direction of the traverse guide roller.

<Problems to be Solved by the Invention> However, the conventional winding device described above has the following problems.

If the wire diameter of the wire wound around the take-up bobbin is relatively large, the wire will come into contact with the end surface of the flange before the optical sensor detects the flange. Then, the winding shape of the linear body is in a state of ear height.

If the wire diameter of the linear body is relatively small, the optical sensor detects the flange section and the moving direction of the traverse guide roller switches before the linear body contacts the end surface section of the flange, so the flange end surface section Insufficient winding occurs and the winding shape of the linear body falls into a state of ear drop.

As described above, according to the conventional device, the winding shape of the linear body does not become uniform due to the size of the wire diameter of the linear body, and the height of the ear becomes high and the state of ear drop is lost. There is a possibility that unwinding may occur when the body is unwound, or winding failure may occur when the bobbin is transported.

The present invention has been made in view of the above circumstances, and a linear body capable of correctly winding the linear body on a winding bobbin with a flange regardless of the wire diameter of the linear body. An object is to provide a winding device.

<Means for Solving the Problems> The present invention has the following configurations in order to achieve the above object.

That is, the winding device of the linear body according to the present invention, the flange portion detecting means provided at a position preceding the linear body in the traverse direction of the linear body, and the detection from the flange portion detecting means. Based on the signal, detecting that the traverse guide roller has moved by a distance until the linear body reaches the inner surface of the flange, and a control means for switching the moving direction of the traverse guide roller, and the flange portion detecting means, ,
It is composed of an optical sensor consisting of a projector and a light receiver, the distance between the central axis of the linear body and the optical axis of the optical sensor is at least ½ of the wire diameter of the linear body, and the flange portion. Is set to be equal to or less than the length in the thickness direction.

<Operation> According to the present invention, the flange portion detecting means precedes the linear body in the traverse direction of the linear body, and the optical axis of the optical sensor included in the flange portion detecting means and the linear body. Since the distance from the central axis is set to at least 1/2 the wire diameter of the linear body and less than or equal to the length of the flange in the thickness direction, the linear body is wound on the bobbin. Before reaching the flange portion, the inner surface of the flange portion is detected by the flange portion detecting means, and this detection signal is given to the control means. The control means moves the traverse guide roller in the winding direction of the linear body by a distance from the time when the detection signal is input until the linear body reaches the inner surface of the flange, and then the moving direction of the traverse guide roller. Switch.
At this time, since the moving direction of the traverse guide roller is switched before the optical axis of the optical sensor included in the flange portion detecting means reaches the outer surface of the flange portion, there is a risk of malfunction due to detecting the outer surface of the flange portion. Absent. In this way, the linear body is wound around the bobbin.

<Example> Hereinafter, one example of the present invention will be described with reference to the drawings.

1 and 2 relate to an embodiment of the present invention. FIG. 1 is a schematic diagram showing a schematic configuration of an apparatus of the present invention, and FIG. 2 is a partially enlarged plan view for explaining its operation.

The linear body winding device according to this embodiment includes a mechanism for rotating the bobbin 11 for winding the linear body 13 and a linear body 13 for the bobbin 11.
It has a mechanism for moving the traverse guide roller 12 that feeds the paper, and a control unit 22 for controlling this movement.

The mechanism for winding the linear body 13 around the bobbin 11 is configured as follows.

The output shaft of the bobbin rotating motor 1 and the rotating shaft 3 for rotating the bobbin 11 are the first belt (or chain) 2
Are connected via. The rotary shaft 3 is provided with a first rotary encoder 4 that detects the number of rotations of the rotary shaft 3, and a rotary substrate 5 that rotates together with the rotary shaft 3.
The bobbin 11 is removably attached to the rotary shaft 3 by tightening the nut 10, and one flange 11b of the bobbin 11 is in contact with the rotary substrate 5 in a pressed state.

Traverse guide roller for guiding the linear body 13 to the bobbin 11
The mechanism for moving the 12 is configured as follows.

A pair of light emitter 8 and light receiver 9 which are means for detecting the flange 11a of the bobbin 11 are attached to predetermined positions of the support shafts 7a and 7b, and one ends of the support shafts 7a and 7b move in the axial direction of the bobbin 11. It is cantilevered by the arm 6. Furthermore, the support shaft
7b includes a traverse guide roller 12 that guides the linear body 13.
Is rotatably provided. The light emitter 8 and the light receiver 9
The optical sensor composed of and has a linear body more than the linear body 13 guided by the traverse guide roller 12.
It is mounted at a position slightly ahead of the winding direction of 13 and the distance between the central axis of the linear body 13 and the optical axis A is at least d / 2 (symbol d is the diameter of the linear body 13). ) It is above, and the position is set so as to be less than the length of the flange 11a in the thickness direction.

The base portion of the arm 6 is screwed into a threaded rod 16 arranged in the axial direction of the bobbin 11 and slidably penetrated into the guide rod 15a. Similar guide rods 15b are arranged in parallel at positions facing the guide rods 15a, and these guide rods 15a,
Both ends of 15b are supported by the fixing plate 14. Guide bar 15b
An arm position detector 17 for detecting the position of the arm 6 is provided at the predetermined position. The screw rod 16 is connected to an output shaft of a gear box 19, and the output shaft is provided with a second rotary encoder 18 for detecting the rotation speed of the screw rod 16. The input shaft of the gear box 19 is connected to the output shaft of the arm moving motor 21 by the second belt (or chain) 20.

The output signals of the first rotary encoder 4, the light receiver 9, the arm position detector 17, and the second rotary encoder 18 are input to the control unit 22, and based on these signals, the control unit 22 causes the arm to move. The movement motor 21 is configured to control the rotation direction, the rotation speed, and the like.

Next, the operation of this device will be described with reference to FIG.

First, the linear body 13 is attached to the bobbin 11 from a linear body supply source (not shown).
The traverse guide roller 13 in order to wind
After passing through the groove of 12, the linear body 13 is put on the bobbin 11 at a predetermined position.
The end of is fixed, and the bobbin rotation motor 1 is operated.
The rotation output of the bobbin rotation motor 1 is transmitted to the rotation shaft 3 via the first belt (or chain) 2,
The rotating shaft 3 rotates. At the same time, the arm moving motor 21 is also started, the rotation output of the arm moving motor 21 is transmitted to the screw rod 16 via the gear box 19, and the screw rod 16 starts rotating. As the screw rod 16 rotates, the support rod 7b
The traverse guide roller 12 attached to the arm 6 moves along the axial direction of the bobbin 11 via the.

Thereby, as shown in FIG. 2A, the linear body 13 is wound around the bobbin 11.

Next, when the linear body 13 reaches the inner surface portion of the flange 11a, the rotation direction of the arm moving motor 21 is switched to start the operation of moving the traverse guide roller 12 in the opposite direction. This operation is due to the characteristic components of the present invention.

That is, the pair of light emitter 8 and light receiver 9 mounted on the flange 11a side of the traverse guide roller 12.
The optical sensor composed of detects the position of the inner surface of the flange 11a before the linear body 13 reaches the inner surface of the flange 11a, and outputs the detection signal to the control unit 22. The control unit 22
After the traverse guide roller 12 moves by a distance L described later by the rising of the input detection signal, the moving direction of the traverse guide roller 12 is switched,
Controls the arm moving motor 21.

The distance L is expressed by the following equation.

L = x- (d / 2) In the above formula, the symbol x is the linear body 13 from the optical axis of the optical sensor.
The distance to the central axis of the linear body 13 and the symbol d are the diameter of the linear body 13.
Therefore, the distance L represented by the above equation is the distance from the inner surface of the flange 11a to the peripheral surface of the linear body 13 at the time when the optical sensor detects the inner surface of the flange 11a.

As a method for the control unit 22 to detect that the traverse guide roller 12 has moved by the distance L from when the optical sensor detects the inner edge of the flange 11a, in this embodiment, the output signal from the second rotary encoder 18 is used. Are using. That is, the number of rotations of the screw rod 16 corresponding to the distance L is set in the control unit 22 in advance, and when the optical sensor detects the inner surface of the flange 11a, the second
Of the traverse guide roller 12 by starting to count the output pulses of the rotary encoder 18 and detecting that the counted value coincides with the set rotational speed.
Has moved by a distance L.

In this way, the moving distance L of the traverse guide roller 12 is set according to the wire diameter d of the linear body 13, and when the optical sensor detects the inner surface of the flange 11a and then moves by the distance L, the arm 6 moves. The moving direction is switched to the opposite direction. At this time, since the moving direction of the traverse guide roller 12 is switched before the optical axis of the optical sensor reaches the outer surface of the flange 11a, the optical sensor does not malfunction due to detecting the outer surface of the flange 11a. Therefore, even if the bobbin 11 has a different body length, the linear body
Since the traverse direction is switched when the peripheral surface of 13 reaches the inner surface of the flange 11a, the linear body 13 is correctly stacked and wound around the bobbin 11.

On the other hand, when the arm whose movement direction is switched on the inner surface of the flange 11a of the bobbin 11 reaches the position of the arm position detector 17 provided on the guide rod 15b, the arm position detector
17 gives a detection signal to the control unit 22, and the control unit 22 switches the rotation direction of the arm moving motor 21 again. Along with this, the moving direction of the traverse guide roller 12 is switched again, and the linear body 13 is wound around the bobbin 11 in a stacked state by the feeding operation of the linear body 13 by the traverse guide roller 12.

As described above, since the flange 11b is in contact with the rotary substrate 5, the inner surface of the flange 11b is always in a fixed position regardless of variations in the body length of the bobbin 11.
Therefore, in this embodiment, the arm position detector 17 for indirectly detecting the inner surface of the flange 11b is constituted by a reed switch fixed to a predetermined position of the guide rod 15b.

The present invention can be modified as follows.

In the above embodiment, the arm position detector 17 has the guide bar 15b.
However, the arm position detector 17 can also be implemented by using an optical sensor composed of a light projector and a light receiver used for detecting the flange 11a. In this case, at least d / 2 on the rotating substrate 5 side with respect to the linear body 13 fed from the traverse guide roller 12.
The light receiver may be attached to the support rod 7b at a distance of, and the light emitter may be attached to the fixed rod 7a at a position opposed to the light receiver.

As a method of detecting the moving distance L of the traverse guide roller 12 after the optical sensor detects the inner surface of the flange 11a, the time required for the traverse guide roller 12 to move by the distance L is measured in advance, and the flange 11a is fixed. A means for activating the timer at the time of detection and switching the rotation direction of the arm moving motor 21 when the time required for the traverse guide roller 12 to move by the distance L has elapsed may be used. However, in the constant pitch winding method, since the moving speed of the traverse guide roller 12 needs to be varied depending on the rotation speed of the bobbin 11, this method has a disadvantage in the constant pitch winding method, but the traverse guide roller 12 is always constant. It can be applied to a so-called constant-angle winding method that moves at a speed.

As a means for detecting the inner surface of the flange 11a of the bobbin 11, it is possible to use an appropriate sensor such as an ultrasonic sensor, a reed switch, or a reflection type optical sensor.

The linear body 13 wound around the bobbin 11 is not limited to the optical fiber, and can be applied to other linear bodies such as plastic monofilament and copper wire.

<Effects of the Invention> As is apparent from the above description, according to the present invention, the flange portion detecting means is
At a position preceding the linear body, further, the distance between the optical axis of the optical sensor and the central axis of the linear body included in the flange portion detection means is at least 1/2 or more of the wire diameter of the linear body, And, it is set to a position that is less than the length of the flange in the thickness direction, detects the flange before the linear body reaches the flange of the winding bobbin, and the linear body is placed on the inner surface of the flange. When the traverse guide roller is moved by the distance to reach it, the traverse guide roller is controlled to switch the moving direction.Therefore, even if the wire diameter of the linear body is relatively thick or thin, the end surface of the flange The winding shape in can be made uniform.

Further, since the moving direction of the traverse guide roller is switched before the optical axis of the optical sensor included in the flange portion detecting means reaches the outer surface of the flange portion, there is a risk of malfunction due to detecting the outer surface of the flange portion. Absent.

Further, since the moving distance of the traverse guide roller is determined based on the inner surface of the flange, even if there is variation in the distance between the bobbin flanges, it is possible to make the winding shape free from the height of the edges and the edge of the flange. it can.

With this, it is possible to suppress the unwinding failure when unwinding the linear body from the bobbin that has finished winding, and it is also possible to similarly suppress the occurrence of winding collapse when the bobbin is transported. .

[Brief description of drawings]

1 and 2 relate to an embodiment of the present invention. FIG. 1 is a schematic diagram showing a schematic configuration of the apparatus, and FIG. 2 is a partially enlarged plan view for explaining the operation thereof. Further, FIG. 3 is an enlarged sectional view showing a winding state of a linear body according to a conventional example. 8 ... Emitter, 9 ... Receiver 11 ... Bobbin, 11a ... Flange 12 ... Traverse guide roller 13 ... Linear body, 22 ... Control unit A ... Optical axis

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Otani 1-1-1, Sonoyama, Otsu City, Shiga Prefecture Toray Co., Ltd. Shiga Plant (56) Bibliography Sho 63-32875 (JP, U) 54-6071 (JP, Y2)

Claims (1)

[Claims] 1. A linear body winding device for winding a linear body around the bobbin by detecting the flange portion of the winding bobbin to switch the moving direction of a traverse guide roller. With respect to the traverse direction of, the flange portion detecting means provided at a position preceding the linear body and the detection signal from the flange portion detecting means, until the linear body reaches the inner surface of the flange. The traverse guide roller is detected to have moved by a distance, and a control means for switching the moving direction of the traverse guide roller is provided, and the flange detection means is composed of an optical sensor consisting of a projector and a light receiver, and the line The distance between the central axis of the linear body and the optical axis of the optical sensor is at least the diameter of the linear body.
A winding device for a linear body, which is set to be 1/2 or more and less than or equal to a length of the flange portion in a thickness direction.