JP2000044117A - Shaft winding device and shast winding control means for shaft winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rotate a winding shaft without using a touch roll sensor having a bad effect on the quality of a product member and to improve the quality of the product member by controlling the winding speed of the winding shaft on the basis of the change rate of the stock quantity of the product member. SOLUTION: A product member is wound on a winding means by a carrying means for carrying the product member. The linear speed of winding of a winding shaft 64 is increased since the winding diameter is increased according to winding. Since the carrying is performed at a fixed speed, a linear speed difference is caused between the carrying speed of the carrying means and the winding speed. The change rate of length of the stocked product member is detected by a detecting means provided in a stock part, and the winding diameter of the winding shaft 64 is calculated on the basis of the change rate of length of the product member. The rotating speed of the winding shaft 64 is calculated from the calculated winding diameter, and the winding speed of the winding shaft 64 is freely controlled on the basis of the calculated rotating speed of the winding shaft 64 to perform the winding, whereby an element having a bad effect on the product member can be omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft winding device for winding a processed product member and a method for controlling the shaft winding device.

[0002]

2. Description of the Related Art In a production facility having a transport device for processing a product member and transporting the product member, and a winding device for winding the product member around a winding shaft, the transport device is required for production quality or production requirements. If the product member cannot be stopped, a stock section is provided between the conveying device and the shaft winding device in order to replace the take-up shaft for winding the product member. Was replaced with a take-up roller. Further, when the product member is wound around the replaced winding shaft, as the winding diameter of the winding shaft increases with the winding, the linear velocity of the product member wound by the winding shaft increases, and The product member is wound up at a speed higher than the transport speed at which the product is transported. For this reason, if the stocked product members are wound up at the stocking section and the stocked product members are all wound up, the product members may be damaged by further winding. For this reason, by providing a touch roll sensor that detects the winding diameter of the winding shaft, and by controlling the motor that rotates the winding shaft based on the winding diameter detected by the touch roll sensor, The linear velocity difference of the product member wound by the winding shaft was controlled.

[0003]

However, the above-mentioned touch roll sensor of the take-up shaft abuts on the product member and detects the take-up diameter, which adversely affects the quality of the product member (wrinkles, scratches, etc.). ).

In the present invention, in consideration of the above, a shaft winding device for controlling winding means for rotating a winding shaft without using a touch roll sensor or the like for detecting a winding diameter in contact with a product member. It is an object to obtain a shaft winding control method.

[0005]

According to a first aspect of the present invention, there is provided a conveying means for processing a product member and conveying the product member at a predetermined constant speed, and winding the processed product member around a winding shaft. A winding unit, disposed between the conveying unit and the winding unit, and stocking the product member to absorb a linear velocity difference between a conveying speed of the conveying unit and a winding speed of the winding unit. Means for detecting the change in the stock amount of the product member stored in the stock means, and a winding shaft based on the change rate of the stock amount of the product member detected by the detection means. And control means for controlling the winding speed.

According to the first aspect of the present invention, the product member transported by the transport means for transporting the product member is taken up by the winding means. At this time, the winding diameter of the winding shaft is increased as the winding is performed, so that the linear velocity of the winding is increased. In contrast, the transport speed of the transport means is
Since the sheet is conveyed at a predetermined constant speed, a linear speed difference between the conveying speed and the winding speed occurs. This linear velocity difference can be absorbed by the stock section provided between the conveying means and the winding means, and the change in the length of the stocked product member is detected by the detecting means provided on the stock section. The winding diameter of the winding shaft is calculated based on the detected rate of change in the length of the product member. The number of rotations of the winding shaft is calculated from the calculated winding diameter, and the winding speed of the winding shaft can be freely controlled based on the calculated number of rotations of the winding shaft to perform winding. .

Further, it is necessary to use a touch roll sensor which detects the winding diameter by contacting the product member by calculating the winding diameter which changes by winding from the rate of change of the length of the product member in the stock section. As a result, adverse effects on product quality can be excluded, and downsizing and cost reduction of production equipment can be achieved.

According to a second aspect of the present invention, there is provided a conveying means for conveying a product member at a predetermined constant speed, a winding means for winding the product member conveyed by the conveying means, the conveying means and the winding means. A stock portion provided between the take-up means, and a stock portion that absorbs a difference between a linear velocity that is conveyed by the convey means and a linear velocity that varies according to a winding amount of the take-up means; And calculating a rate of change of the stock amount of the product member resulting from a linear velocity which varies in accordance with the transport linear velocity of the transport means in the stock section and the shaft winding amount in the winding means, and Calculate the winding diameter of the winding shaft that increases by winding based on the rate of change of the amount, calculate the number of rotations of the winding shaft from the calculated winding diameter, and based on the number of rotations of the winding shaft. , To rotate the winding shaft Ri is characterized by performing the rotation speed control means.

According to the second aspect of the present invention, a conveying means for conveying the product member at a predetermined constant speed, a winding means for winding the product member conveyed by the conveying means,
In a shaft winding device provided with a stock unit for stocking a product member provided between a conveying unit and a winding unit, a length of the product member generated by a difference in linear velocity between the conveying unit and the winding unit in the stock unit. By calculating the rate of change of the winding diameter, a winding diameter that increases in accordance with the winding is calculated from the calculated rate of change, and the rotation speed of the winding shaft can be calculated from the calculated winding diameter. Further, by controlling the winding means based on the calculated number of rotations of the winding shaft, it is possible to synchronize the linear velocities of the product members by the conveying means and the winding means or to control the difference in linear velocities freely. .

Therefore, it is not necessary to provide a touch roll sensor for detecting the winding diameter, which increases with the winding, by contacting the product member, which does not adversely affect the quality of the product member and reduces the production equipment. The size and cost can be reduced.

[0011]

FIG. 1 shows a bead manufacturing apparatus 10 according to the present embodiment.

The bead manufacturing apparatus 10 is provided with a wire unwinding unit 14 for unwinding the wire 12 wound on an unillustrated unwind reel. A winding roller 16 is provided downstream of the wire unwinding section 14 in the transport direction of the wire 12.
Is disposed, and the wire 12 discharged from the wire unwinding unit 14 is wound around a winding roller 16 and is conveyed in a predetermined direction.

[0013] Further, it is discharged from the wire unwinding section 14,
On the downstream side in the transport direction of the wire 12 transported via the winding roller 16, there is a conveyor 20 for transporting the wire 12.
Are arranged.

The conveyor is composed of a transport drive motor 22, a roller 24, a roller 26 and a belt 28, which are locked on a rotating shaft 22A of the transport drive motor 22, and the transport drive motor 22 is driven by the belt via the rollers 24. 2
By driving the wire 8, the wire 12 on the conveyor is conveyed.

Further, the wire 20 discharged from the wire unwinding section 14 and conveyed on the conveyor is
Is provided with a rubber coating portion 30 that generates a bead wire 12A by coating the rubber with the rubber. The rubber is heated, vulcanized and extruded while conveying the wire 12, thereby generating a bead wire 12A.

The bead wire 12A generated by the rubber coating unit 30 is further transported by the conveyor 20 to the downstream side.

Further, the conveyor 20 includes
A yard meter 32 is provided to detect the transport length of the wire 12 transported above. Yard meter 32
The transport length of the wire 12 detected by the conveyor 20 is the same as the transport length of the bead wire 12 </ b> A generated by the rubber coating unit 30.
Is output to the control unit 40 provided for controlling the rotation of the transport driving motor 22 and the winding motor 62 of the winding unit 60 described later.

The transport speed of the wire 12 transported from the wire unwinding section 14 via the hanging roller 16 is the same as the transport speed of the wire 12 and the bead wire 12A transported on the conveyor. The control is performed by the control unit 40 (set at a constant speed in advance).

Further, a festoon section 50 for storing a predetermined amount of the bead wire 12A is provided downstream of the conveyor 20 in the conveying direction. This festoon part 50
When the conveyer is stopped when exchanging the winding shaft of the winding section described later, the quality of the rubber coating section 30 is adversely affected by the rubber vulcanization molding.
A predetermined amount of the bead wire 12A can be stocked at zero. Further, the amount of the bead wire 12A stocked in the festoon part 50 can be variably stocked.

Further, in the festoon section 50, three pairs of a phototube sensor 54 (PH1), a phototube sensor 56 (PH2), and a phototube sensor 58 (PH3) are provided in order to detect the stock amount of the bead wire 12A that is stocked. It is arranged. The signals detected by the phototube sensor 54 (PH1), the phototube sensor 56 (PH2), and the phototube sensor 58 (PH3) are output to the control unit 40 via the input / output port 52. In the control unit 40, the photoelectric tube sensor 5
4 (PH1), the phototube sensor 56 (PH2), and the phototube sensor 58 (PH3), the stock amount of the bead wire 12A stocked in the festoon section 50 is calculated.

A winding roller 42 is provided on the downstream side of the festoon section 50 in the transport direction of the bead wire 12A.
Are arranged. The wrapping roller 42 wraps the bead wire 12A and conveys it in a predetermined direction, similarly to the wrapping roller 16 described above. The winding roller 4
The conveyance drive of the bead wire 12A wound around 2 is
The bead wire 12 </ b> A, which is transported and driven by a winding motor 62 of the winding unit 60 described later and is stocked in the festoon unit 50, is transported to the winding unit 60 via the winding roller 42.

The winding section 60 is composed of a winding motor 62 that rotates under the control of the speed of the control section 40 and a winding shaft 64 that is locked on a rotating shaft 62A of the winding motor 62, and is stocked in the festoon section 50. The bead wire 12A is wound up.

In the bead manufacturing apparatus, the conveying linear velocity changes as the winding diameter changes according to the winding of the winding section 60. Therefore, a speed difference occurs between the transport linear speed of the conveyor 20 and the surface transport speed of the winding unit 60. For this reason, the stock amount of the bead wire 12A stocked in the festoon portion 50 changes. The control unit 40 calculates a winding diameter that changes by winding at the winding unit from the calculated change rate of the stock amount of the bead wire 12A stored in the festoon unit 50,
By controlling the drive of the winding motor 62 that drives the winding shaft based on the calculated winding diameter, control is performed on the difference in the linear velocity of the conveyor 20 and the winding unit 60 for conveyance.

Here, an example of the control calculation performed by the control unit 40 will be described.

The distance D0 (winding length) traveled by one rotation of the winding shaft is obtained by equation (1).

D0 = winding diameter × π ÷ D3 (1) Here, D3 is a diameter correction value, and the initial value is 1.

For example, if the winding diameter is 400 mm, D0 = 400 × 3.14 ÷ = 1256 = 12.56 PLS (0.1 m / PLS) Next, the rate K1 at which the speed is increased by one rotation of the winding shaft is determined. It is determined by equation (2).

K1 = (winding diameter + bead wire thickness × 2) ÷ winding diameter (2) In the above example, when the winding diameter is 400 mm and the thickness of the bead wire is 2.5 mm, K1 = ( 400 + 2.5 × 2) ÷ 400 = 1.0125 The rate K1 at which the speed is increased by one rotation of the winding shaft is given by the following equation (3).
It is represented by

K1 = 1 + D2 (3) where D2 is an acceleration correction value.

In the above example, D2 = 0.0125.

Subsequently, a correction value D3 to be multiplied by the command speed when the linear speed is to be adjusted to the speed of the conveyor 20 even in the next one rotation of the winding shaft is obtained by the equation (4).

D3 = previous diameter correction value−D2 (4) where D2 is a speed increase correction value.

In the above example, D3 = 1-0.0125 =
0.9875.

Next, as a result of the speed increase, the stock amount of the festoon part 50 decreases, and half of the winding length of one rotation of the winding shaft is changed to the photoelectric tube sensor 54 (PH) of the festoon part 50.
Assuming that the pixel enters the region between 1) and the phototube sensor 56 (PH2), the length L1 is obtained by equation (5).

L1 = winding diameter × π × 1/2 (5) In the above example, L1 = 400 × 3.14 × 1 × 2 = 62
8 = 6.28 PLS (0.1 mm / PLS) Further, a constant D1 necessary to obtain data indicating how much the speed has been increased from a pulse value L1 which is a half of the winding length of one rotation of the winding shaft is expressed by an equation (6). ).

D1 = D2 / L1 (6) where D2 is a speed increase correction value.

In the above example, D1 = 0.0125 ÷ 6.
28 = 0.00199 Further, the winding diameter is obtained by Expression (7).

Winding diameter = winding diameter initial value ÷ D3 (7) Here, D3 is a diameter correction value.

In the above-mentioned example, the winding diameter is obtained at 400 ° D3.

The diameter correction value D3 obtained as described above is added to the conveyor 2
The correction value D5 based on the conveyance speed command of 0 is integrated, and the obtained correction value is converted to D6 (D6 = D3 × D5) by the festoon unit 5.
The correction value D7 based on the stock amount of 0 is integrated, and the correction value D
8 (D8 = D6 × D7). Further, the correction value D8
And a correction value D9 for synchronizing the linear speed of the conveyor 20 and the winding linear speed in the initial state, and a correction value D10 (D10 = D8 × D9) for calculating the current winding diameter is obtained. The rotation speed is calculated from D10. By rotating the winding motor 62 at the calculated number of rotations, the winding of the winding unit 60 is performed.

Next, the operation of the present embodiment will be described.

When a start instruction is given, the rubber cover 3
At 0, the heating for vulcanizing the rubber on the wire 12 and extruding it begins. When the heating of the rubber coating unit 30 rises to a predetermined value, a signal for starting the winding of the winding unit 60 is output from the control unit 40 together with a signal for starting the conveyance of the conveyor 20 at a predetermined speed and output. The transport and winding of the conveyor 20 and the winding unit 60 are started based on the start signal.

When the conveyance and winding of the conveyor 20 and the winding unit 60 are started, the wire 12 is pulled out by the conveyance driving of the conveyor 20 from the wire unwinding unit 14 and is transferred to the conveyor 20 via the winding roller 16. Conveyed.

The conveyer 20 further controls the wire 12
After being conveyed to the rubber coating unit 30, the heated and vulcanized rubber coats the wire 12 by extrusion, and a bead wire 12A is generated.

The generated bead wire 12A is conveyed on the conveyor 20 and conveyed to the festoon section 50. The bead wire 12 </ b> A is temporarily stocked in the festoon section 50, and is further conveyed to the winding section 60 by the winding of the winding section 60.

Note that the initial value of the transport linear velocity of the conveyor 20 and the winding section 60 is set to be lower by a predetermined value than the winding linear velocity of the winding section 60.

Here, the control of the conveying speed of the conveyor 20 and the winding rotation speed of the winding unit 60 performed by the control unit 40 according to the present embodiment will be described with reference to the flowchart of FIG.

In step 100, when the conveyance (and winding) of the conveyer 20 and the winding unit 60 is started, the process proceeds to step 102, where the yard meter 32 arranged on the conveyor 20 transfers the wire 12 (distance). Pulse value)
And outputs detection data to the control unit 40.

When the conveyor 20 and the take-up unit 60 start to be conveyed, the linear speed of the conveyor 20 is higher in the initial state, so that the bead wire 12A starts to be stocked in the festoon unit 50.

Subsequently, in step 104, when the bead wire 12A is stocked in the festoon section 50, the photoelectric tube sensor 54 (PH) provided in the festoon section 50
1), phototube sensor 56 (PH2), phototube sensor 58
By (PH3), the stock amount of the bead wire 12A stocked in the festoon section 50 is detected, and the detected stock amount data of the festoon section 50 is output to the control section 40.

Next, the routine proceeds to step 106, where the control unit 40
Then, the wire 12 detected by the yard meter 32
The length of the bead wire 12A conveyed to the festoon section 50 within a predetermined pulse is calculated from the conveyance distance data. Calculated length of bead wire 12A, conveyor 2
From the transport speed of 0 and the stock amount of the bead wire 12A stocked in the festoon portion, a winding diameter obtained by combining the winding shaft 64 of the winding unit 60 and the wound bead wire 12A is calculated.

Here, a method of calculating the winding diameter will be described with reference to the flowchart of FIG.

In step 200, the above-mentioned speed-up constant D1 is integrated with the pulse value of which the photoelectric tube sensor (56PH2) has been turned off during the distance D0 traveled by one rotation of the winding shaft to obtain a speed-up correction value D2. Next, at step 202, the current diameter correction value D is calculated from the difference between the previous diameter correction value D3 and the speed increase correction value D2.
In step 204, a conveyor speed command D5 is integrated with the current diameter correction value D3 to obtain a correction value D6. Subsequently, at step 206, the festoon part 5 is added to the correction value D6.
The festoon correction value D7 obtained from the stock amount at 0 is integrated to obtain a correction value D8. Next step 2
In step 08, a correction value D9 for integrating the conveyor linear speed and the winding linear speed into the same speed in the initial state is added to the correction value D8 to calculate a correction value D10. From this correction value D10,
The winding diameter of the winding shaft 64 of the winding unit 60 and the wound bead wire 12A is calculated.

On the other hand, when the winding diameter including the winding shaft 64 of the winding section 60 and the wound bead wire 12A is calculated, in step 108 of FIG. 2, based on the calculated winding diameter, The rotation control of the winding motor 62 is performed at every predetermined pulse.

Next, at step 110, when the diameter of the winding shaft of the winding section 60 calculated by the control section 40 becomes equal to or larger than a predetermined value, the control section 40 issues a rotation stop command to the winding motor 62. Is output.

If it is determined in step 110 that the winding diameter of the winding section 60 calculated by the control section 40 is smaller than a predetermined value, the winding diameter of the winding section 60 calculated by the control section 40 is reduced to a predetermined value. Until the value becomes equal to or more than the value, the processing of steps 102 to 110 is repeated.

On the other hand, when a rotation stop command is output from the control unit 40 to the winding motor 62 in step 110, the process proceeds to step 112, and the rotation of the winding motor 62 is stopped. When the rotation of the take-up motor 62 has stopped, the process proceeds to step 114, where the bead wire 12A is cut by a cutter (not shown), and the take-up shaft 64 is
When the number is replaced with 4, the process proceeds to step 116.

During the replacement of the take-up shaft 64 in step 114, the conveyor 20 cannot be stopped in order to maintain the quality of the bead wire 12A rubber coating.
A is stocked in the festoon part 50, so that the winding shaft 6 can be transported without stopping the conveyance of the conveyor 20.
4 can be replaced. . Step 1
The exchange work of the take-up shaft 64 is completed at 14, and when a work end instruction is given at the next step 116, a series of processing ends here. However, here again, the bead wire 12A
When an instruction to start winding is issued, the process proceeds to step 118, and the winding motor 62 of the winding unit 60 starts to be driven.
At this time, the rotation speed wound by the winding shaft is the speed of the conveyor 2.
The winding is performed at a winding linear speed higher than the linear speed of the conveyance of 0 and at a winding speed determined based on the stock amount of the bead wire 12A of the festoon portion 50.

Subsequently, in step 120, winding is started under the above conditions, and when the stock amount of the festoon section 50 becomes small, the phototube sensor 58 (PH3), the phototube sensor 56 (PH2), and the phototube sensor 54 (PH1) are started. The phototube sensor sequentially changes to the OFF state, and when the phototube sensor 54 (PH1) is turned off, the winding unit 60
Winding stops temporarily.

At this time, the controller 40 controls the bead wire 1 conveyed to the festoon 50 within a predetermined pulse.
The winding diameter wound by the winding unit 60 is calculated from the transport length of 2A and the rate of change of the stock amount of the bead wire 12A in the festoon 50. Further, based on the calculated winding diameter, when a rotation speed command is output to the winding motor 62 so as to wind at a winding line speed lower by a predetermined amount than the surface conveying speed of the conveyor 20, the process returns to step 102,
Until a work end instruction is issued in step 116, a series of processes in steps 102 to 116 is repeated. In the present embodiment, the winding control of the bead manufacturing device has been described. However, the present invention is not limited to the bead manufacturing device, but may be any device that causes a speed difference between the linear velocities of two or more transfer devices. A stock unit is provided between the respective transfer devices, and the transfer speed can be controlled based on the change rate of the stock amount of the stock unit.

[0061]

As described above, according to the present invention, without using a touch roll sensor or the like to detect the winding diameter by contacting the product member, the change rate of the product member in the stock portion can be obtained. Since the take-up diameter can be calculated, the rotation of the take-up shaft is controlled based on the calculated take-up diameter. This has excellent effects that elements that adversely affect the product member can be omitted, and that the size and cost of the device can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a bead manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating winding control of the bead manufacturing apparatus according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating a method of calculating a winding diameter of the bead manufacturing device according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 20 conveyor 22 transport drive motor 40 control unit 50 festoon unit 54 photoelectric tube sensor PH1 56 photoelectric tube sensor PH2 58 photoelectric tube sensor PH3 60 winding unit 62 winding motor

Claims (2)

[Claims] 1. A conveying means for processing a product member and conveying the processed product member at a preset constant speed, a winding means for winding the processed product member around a winding shaft, the conveying means and the winding means And stock means for stocking the product member to absorb a linear velocity difference between the transport speed of the transport means and the winding speed of the winding means; and Detecting means for detecting a change rate of the stock amount of the product member; and control means for controlling a winding speed of the winding means based on the change rate of the stock amount of the product member detected by the detecting means. A shaft winding device, characterized in that: 2. A conveying means for conveying the product member at a predetermined constant speed, a winding means for winding the product member conveyed by the conveying means, and a winding means provided between the conveying means and the winding means. A stock unit that absorbs a difference between a linear velocity that is conveyed by the conveying unit and a linear velocity that varies according to the amount of winding by the winding unit; Calculate the rate of change of the stock amount of the product member resulting from the linear velocity that varies according to the transport linear velocity by the transport means and the shaft winding amount by the winding means, and based on the calculated change rate of the stock quantity. Calculate the winding diameter of the winding shaft, which is increased by winding, calculate the rotation speed of the winding shaft from the calculated winding diameter, and rotate the winding shaft based on the rotation speed of the winding shaft. Speed control of the winding means A shaft winding control method for a shaft winding device.