JPS5936060A - Winding core turning method of sheet-shaped article winding machine - Google Patents

Abstract

PURPOSE:To raise the accuracy of stopping position of a winding core irrespective of the weight of an article to be wound by controlling the speed of a turret motor for turning the winding core by means of pulses so as to reduce its rotary speed and stopping it according to the prescribed number of pulse counting. CONSTITUTION:A winding core 5a is controlled by a control device, and turned with high speed of N1 from a takeoff position B to a position C and the with low speed of N2 to a position D, allowing pulse counting for controlling the speed of a turret motor 10 to be started at the position D. And it is reduced in its speed when the pulse number of P1 is counted, and then the motor 10 is stopped when it reaches a position F, i.e., when the pulse number P2 from the origin D reaches some value having an error within prescribed value with respect to the pulse number P3 to a stoppage target A, allowing the motor 10 to be stopped, and a brake to be energized. Hereby, a distance 14 from the position F to a position G to which the motor overruns due to its inertia force is limited to a sufficiently small value.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for rotating a winding core of a sheet winding machine between stop positions (also referred to as a turret in Suimei AM), and particularly relates to a method for rotating a winding core of a sheet winding machine between stop positions. The present invention relates to a method for maintaining highly accurate rotation stop position accuracy of a winding core of a winding machine.

In a turret-type sheet-like material winding machine, as shown in FIG.
After being wound on the winding core 2 for a certain length, at the take-out position,
Then, the next winding core 2a is turned to the winding position A.

Conventionally, when stopping the rotation of this turret, the rotation speed was decelerated in advance before stopping, and the rotation was stopped by applying a brake based on the fixed position signal of the winding core 2a. If the width is wide, the material to be wound and the winding core become a heavy pan and the inertial force in the direction of rotation becomes large, and the sheet material 1 to be wound is not always of a constant length and weight. Since the inertial force of the winding material moved to B changes, it has been difficult to stop the winding core at the target position with high precision.

In order to improve the stopping position accuracy of this turret even a little, it is possible to suppress the inertial force of the winding core by extremely slowing down the turning speed before stopping, but this method increases the turning time, This method is not practical because it increases the chance of quality defects occurring due to the winding of sheet material that tends to occur during turning.

The stopping position accuracy of the turret is particularly required when cutting a sheet-like material and winding it around a take-up core. When cutting a sheet-like material, for example, the relationship between the cutter 3 and the winding core 2a, which are placed at the position C in FIG. As a result, cutting errors and wrapping became process errors and troubles.

In order to solve the above-mentioned problems, the present invention has been developed so that the turret time is not particularly increased, and even when the material to be wound or the winding core is heavy, the winding can always be carried out within an error range that does not cause 1 hera pull. It is an object of the present invention to provide a method for rotating a winding core of a sheet-like material winding machine, which allows the winding core to be stopped.

In order to achieve this object, in the method for rotating the winding core of the sheet winder of the present invention, the speed of the taref 1 motor is controlled by pulses, and the origin point for the pulse counter 1 provided in the middle of the swivel stroke is Pulses are counted from the origin, and after the rotation is made for a certain number of arbitrarily set pulses, the turning speed is decelerated according to an arbitrarily set constant deceleration curve, and during this deceleration, the rotation speed from the origin is When the number of pulses is within a certain error with respect to the target winding core stop position, the rotation command of the tar knot motor is stopped and the brake is applied to bring the winding core to the specified position. will be stopped. As a result, the winding core rotation is decelerated to the required low speed using an appropriate curve only when necessary just before stopping at a fixed position, and the inertia )j just before braking is kept small, and the braking is performed based on the accurate target stopping position. As a result, the winding core is stopped with sufficient positional accuracy, and the intended purpose is achieved.

Hereinafter, preferred embodiments of the winding core turning method of the present invention will be described with reference to the drawings. FIG. 2 shows an apparatus in which the method of the invention is applied to film winding.

In the figure, numeral 1 indicates a film that is fed in a wide width, and the film 4 is wound up to a certain length on a long winding core 5 that extends perpendicular to the plane of the paper and is rotatably supported, and is then brought to the take-out position B. ,
The next winding core 5a is rotated to the winding position A. This turning is carried out by a turret wheel 7 which is rotatably and precisely supported by a highly rigid frame 6 and has teeth formed all over its outer circumferential surface, and a gear 8 meshed with the teeth of the turret wheel 7. This is done by being rotated by a turret motor 10 via a speed reducer 9 having a reduction ratio of . It is desirable to use a DC motor or a pulse motor as this terref1 motor.

This rotational speed control, that is, the rotational speed control of the turret motor 10, is performed by an input saw using pulses from the control device 11, and the frequency of this pulse and the motor rotational speed, and therefore the rotational speed of the winding core, are made to correspond. It has become.

In addition, the number of pulses and the motor rotation angle, and therefore the rotation progressing portion Il of the winding core! ! 1 is also made to correspond.

The rotation speed of the winding core 5a is controlled by the control device 11 from the take-out position B to the winding position A at a speed as shown in FIG. That is, the winding core 5a starts turning from the take-out position B, is turned at a relatively high speed N1, and reaches a position C near the winding position A. The fact that the winding core 5a has reached the position IC is detected by a suitable detector 12 such as a limit switch or a nearby switch, and the signal is transmitted to the control device 11, and the rotation speed is decelerated to a considerably low speed N2. be done. Thereafter, the winding core 5a is moved from the winding position C to the winding position K.
It reaches 11D which is close to A. Detection that the winding core 5a has reached position @D is performed by a high-precision detector 13 such as a high-precision proximity switch, and the rotational speed of the turret motor 10 is controlled by the signal from this detector 13. Counting of pulses is started. Therefore, the signal of this detector 13 is then followed by a clang! It becomes the position signal of the origin of the number of pulses to be applied. Note that even if the detectors 12 and 13 are located at positions far away from the winding core positions C and D as shown in FIG. 2, J: is possible as long as the positions IC and D are clearly distinguished.

The winding core 5a is rotated while the number of pulses is counted.
is rotated at speed N2 until it counts a preset number of pulses P1, and then is controlled to decelerate according to a preset deceleration curve of gradual speed reduction. and winding core 5
When a reaches position F, that is, the pulse count number P2 from the origin is within a certain error with respect to the pulse number P3 until the winding core stops at the target position A, that is, P3-P2.
When becomes within a certain number, the rotation command for the turret 1-motor 10 is stopped and the brake for the turret is activated.

At this position F, the turning speed is sufficiently reduced, so that the distance 14 from position F to position G after overrun by the inertia force of the winding core 5a is such that the object to be turned is heavy. Even if the weight of the object being rotated changes, it can be kept sufficiently small. Therefore, the error in position G with respect to the target stop position A of the winding core is kept small, and sufficient accuracy in the stop position of the winding core 5a is ensured.

Note that the deceleration curve from the pulse number P1 and the position IIIE described above can be made into an iQ steady state arbitrarily by the control device 11,
Through testing, suitable values for the winding device can be easily established.

As described above, when using the winding core rotation method of the sheet winder of the present invention, even when the winding material and the winding core are heavy, and the weight of the winding material changes significantly. Even if
Good winding core stopping position @accuracy is always maintained.

In addition, since the turning speed is only decelerated for a short time before the take-up core stops, the turning time is not increased compared to conventional systems, and can actually be shortened. .

With these, stable winding of continuously conveyed sheet-like objects can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of a general turret type winder, Fig. 2 is a side view of an embodiment of a winder to which the method of the present invention is applied, and Fig. 3 is a side view showing an embodiment of the winder. FIG. 2 is a diagram showing the relationship between the rotation speed of the winding core and the position of the winding core of the device. 4... Film 5.5a... Winding core 7... Turret wheel 10... Turret motor 11... Control device 12... ...Detector 13... High precision detector A... Winding position, winding core stop target position B...
...Extraction position C...Deceleration start position D...Pulse origin position E...Deceleration start position F...Turret] Motor rotation command stop Position G
...Take-up core stop position Pl, P2, P3 ...Pulse number Patent applicant
Toshi Co., Ltd. Figure 3 - Winding core fL1

Claims (1)

[Claims] (1) In a method in which the winding core of a sheet winder is rotated between the winding position and the take-out position, the speed of the turret motor for rotation is controlled by pulses, and the speed of the turret motor for rotation is controlled by pulses. The origin signal is transmitted, the pulses from the origin are counted, and after the origin is rotated for a certain number of pulses, the rotation speed is controlled according to a preset deceleration curve, and the counted pulse number is determined by A sheet-like material winding machine characterized in that when the number of pulses is within a certain error with respect to the number of pulses corresponding to the target stop position of the core, the rotation command of the turret motor is stopped and the rotation is braked. How to rotate the winding core.