JPS5830227B2 - Speed control device for striatum winding tray - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speed control device for a tray that winds a filament such as an electric wire cable in a spiral shape in the horizontal direction.

As is well known, in the manufacturing process of filament bodies such as high voltage cable cores, the filament bodies sent at a constant speed from a take-up machine etc. are not wrapped around a winding drum such as a drum, but are placed on a horizontal tray. Generally, winding is carried out in a spiral manner, but in this case, the circumferential speed of the winding filament located at the outermost position on the tray increases the circumferential speed of the filament that is sent toward the tray, i.e. If it is slower than the traveling speed of the traveling ray body outside the tray,
A gap gradually forms between the newly wound filament on the tray and the already wound filament on the tray, eventually making it impossible to wind the filament, while the circumferential speed of the wound filament increases. If the traveling speed of the striatum is faster than the traveling speed of the striatum, the striatum to be newly wound on the tray is forcibly pulled, and as a result, excessive tension is applied to the striatum, and the striatum is However, in the case of paper-insulated power cable cores, the insulating paper may wrinkle, or in the worst case, the insulating paper may be cut, resulting in product defects. In order to wind the material into a spiral shape, it is necessary to match the circumferential speed of the wound filament on the tray with the running speed of the traveling filament.

However, in actual winding work, the winding radius of the wound filament on the tray is small at the beginning of winding, and as the number of windings increases, the winding radius increases. It is necessary to gradually reduce the rotation speed of the tray.

Conventionally, such adjustment of the rotation speed of the tray has been done manually, but this adjustment involves a lot of know-how, requires skill, and can cause worker fatigue if the work lasts a long time. There were problems such as the thickness of the tube being too thick.

The present invention aims to effectively solve the above-mentioned problems, and provides a speed control device that automatically adjusts the rotational speed of a tray in order to smoothly wind the filamentous bodies in an aligned state. be.

Embodiments of the present invention will be described in detail below with reference to the drawings.

Figures 1 to 3 show an example of a state in which a filament is wound on a tray by carrying out the present invention, and show the filament of a wire cable to be wound on the tray. 1 is sent to the right in FIG. 1 by a traveling means such as a take-up machine 2 from, for example, a paper tape winding process.

The above-mentioned take-up machine 2 is usually driven by a speed-adjustable rotary drive means 3 such as a continuously variable speed motor, and the above-mentioned rotary drive means 3 has a mechanism that detects the rotation speed and corresponds to the rotation speed. A detector 4 is provided for generating an output, in other words, a running speed signal Sa corresponding to the running speed of the filament 1.

A tray 5 is disposed in front of the take-up machine 1 (on the right side in FIG. 1), and is formed by forming a vertical cylindrical portion 5b in the center of a horizontal disk-shaped placement plate 5a.

The tray 5 is configured to be horizontally rotated clockwise in FIG. 1 about a vertical axis by a variable-speed tray drive means 6 such as a continuously variable speed motor.

In this tray drive means 6, a running speed signal Sa from the detector 4 is inputted to a control section 7 that controls its rotation speed via a tray diameter compensation circuit 8 such as a variable resistor, a variable amplifier, or a variable attenuator. It is configured to

The control unit 7 controls the tray 5 so that the circumferential speed of the cylindrical portion 5b, which is the minimum winding radius r1 of the tray 5, matches the running speed of the line condition 1 outside the tray, in accordance with the magnitude of the output signal. Set the initial rotation speed.

Note that the minimum winding radius of the tray 5 depends on the size of the tray used, that is, the diameter of the cylindrical portion 5b of the tray, so when using trays 5 of different diameters, the minimum winding radius of each The level of the traveling speed signal Sa is adjusted by the tray diameter compensation circuit 8 according to the size of the winding radius, so that the circumferential speed of the tray 5 at the minimum winding radius becomes the traveling speed of the incoming linear body 1. It is important to set them so that they match.

In this way, the initial rotational speed of the tray 5 for the first winding of the filament 1 is set, but the control section 7 of the tray driving means 6 automatically controls the rotational speed of the tray 5 for the second and subsequent windings. A program mechanism for controlling change settings is further provided.

An electronic computer may be introduced as this programming mechanism, but since this would be very expensive, the practical example shown is a pulse generation circuit 9 that continuously generates pulses of a predetermined period, and a a pulse counter 10 for counting;
A gate circuit 11 interposed between the pulse generation circuit 9 and the pulse counter 10 to control the passage of pulses, a pulse motor 12 that rotates by the pulses counted by the pulse counter 10, and rotation of the pulse smoke 12. It is formed by an angle detector 13 that detects an angle.

The pulse counter 10 is configured by a ring counter, for example, so that it returns to zero when it completes counting a predetermined number of pulses, for example, ■O pulses, and prepares for counting the next 10 pulses. For example, when the pulse counter 10 completes counting a predetermined number of pulses, the pulse counter 10 is opened to allow pulses to pass through each time the tray 5 rotates once to a predetermined position. A detection switch S such as a limit switch or a photoelectric switch that detects one rotation of the tray 5 is installed oppositely, and a cam 14 is provided on the tray 5 to activate the detection switch. At the same time, the signal obtained when the counting of a predetermined number of pulses from the pulse counter 10 is completed, that is, the counting end signal, is input as S1.
What is necessary is to input the closing signal S2 to the gate circuit 11 as the closing signal S2.

Further, the pulse motor 12 is rotated by an angle proportional to the number of pulses by the pulses passed through the pulse counter 10, and the angle detector 13 is connected to the drive shaft 12a of the pulse motor 12 via a gear mechanism 15 or the like. This generates an angle signal sb at a level corresponding to the rotation angle of the pulse motor 12.

Each time the tray 5 rotates once and reaches a predetermined position due to such interception, a predetermined number of pulses are input to the pulse motor 12, and the pulse smoke rotates in a predetermined direction at a predetermined angle.
The output level of the angle signal sb from the angle detector 13 changes by a predetermined amount.

This output is constantly input to the control section 7 of the tray 1 driving means 6 to control the rotational speed of the tray 5 in accordance with its size.

That is, the rotational speed of the tray 5 decreases by a predetermined amount each time the tray rotates once and reaches a predetermined position.

Here, the detection switch S is activated when the winding of the filament 1 at one winding radius is completed and the filament 1 at the next winding radius is activated.
Since the position of the tray 5 is detected when the winding of the wire starts, the rotational speed of the tray 5 decreases by a predetermined amount each time the winding radius of the filament 1 increases.

In actuality, let V be the circumferential speed of the outermost wound wire on the tray, let r be the winding radius, and let m be the rotational speed of the tray 5 expressed in the number of rotations per unit time. Since these values are determined by the following relational expression, in order to keep the circumferential speed V constant, the rotational speed n must be decreased in inverse proportion to the increase in the winding radius r.

Although it is not necessary in practice, in order to make the circumferential speed V accurately match the running speed of the running strip 1 outside the tray in a very strict sense, it is necessary to set the rotational speed port of the tray 5 at the The rotation speed must be set so that it decreases along the hyperbola i as shown in Figure 4, but in the method of the present invention, the change in rotation speed is not set in advance, but the set value and Since the error occurring between the actual value and the actual value is fed back and more precise adjustment is performed based on the feedback, it is sufficient to reduce the rotational speed n step by step along a decreasing straight line l that approximates the hyperbola l.

In other words, exactly (theoretically) the winding of the striatum 1 or 1
The amount of decrease in the rotational speed of the tray must be gradually corrected and adjusted each time the winding increases, but in reality, such fine correction adjustment is not performed and there is no problem even if the amount of decrease is kept constant.

Of course, depending on the situation, it is also possible to gradually correct and adjust the amount of decrease in rotational speed along the hyperbola l.

Furthermore, in the illustrated apparatus, at a position where the filament 1 passes while being slightly bent in the horizontal direction before being wound around the tray 5,
A support stand 16 that is movable horizontally in a direction substantially orthogonal to the running direction of the filament 1, a swinging arm 17 that is swingable in the horizontal direction about a fulcrum P on the support stand 16, and arm 1
The swinging arm 17 is rotatably provided at the tip of the swivel arm 17, and when the swivel body 1 is brought into contact with the filament body 1 in the horizontal direction, the swing arm 17
a pair of rollers is, is for swinging, and the swinging arm 1
A pinch fluctuation amount detecting device 20 is provided, which includes a swing angle detector 19 such as a potentiometer for detecting the swing angle of 7.

The support stand 16 only needs to move in a direction across the striated body 1 in synchronization with the rotation angle detector 13,
For example, it is made to move linearly while being guided by guide frames 23 and 23 by the rotation of a screw shaft 22 connected to the rotation shaft 13a of the rotation angle detector 13 via a gear mechanism 21, and this movement direction is It is set so that the winding radius of the filament 1 on the tray 5 increases and when the rotation shaft 13a of the rotation angle detector 13 rotates, it moves upward in the figure.

Therefore, each time the winding radius of the filament 1 on the tray 5 increases, the fulcrum P of the swinging arm 17 moves upward in the figure by a predetermined distance, and the amount of movement is equal to the amount of winding on the tray 5. Traveling filament 1 as the wrapping radius of the attached filament increases
is set to be equal to the amount of change in the entry position of the tray 5.

Therefore, as shown in FIG. 2, the angle of the swinging arm 17 is the same as that of the striatum even when the winding radius is small (solid line in the figure) and when the winding radius is large (imaginary line in the figure). In other words, as long as the tension of No. 1 does not change, in other words, as long as the traveling speed of the running filament outside the tray and the circumferential speed of the wound filament at the outermost side on the tray are equally balanced, it hardly changes.

However, as described above, the program configuration changes the rotational speed of the tray 5 in accordance with the circumferential speed of the wound linear body on the outermost side of the tray 5, and moves the pinch fluctuation amount detection device 20. However, the deflection of the filamentous body 1 is not always constant due to unbalanced tension, slight differences in the rigidity of the filamentous body 1, and the like.

Therefore, when these phenomena occur, adjustments are made as follows.

The output of the swing angle detector 19, that is, the deflection amount signal Sc
The output is input to the control section 7 of the tray driving means 6,
When the output is a predetermined value, that is, when the running speed of the running filament and the circumferential speed of the wrapped filament are equal, the swinging arm 17
is in a predetermined position (the pair of rollers 18, 18 do not contact the filament body 1 at all, or even if they do, the swinging arm 17 does not swing), the rotation speed of the tray 5 is increased or decreased. On the other hand, there is a difference between the running speed and the circumferential speed, and the linear body 1 pushes the roller 18, causing the swinging arm 1T to rotate from a predetermined position in the counterclockwise direction in FIGS. 1 to 3 and output. changes in a predetermined direction, the rotational speed of the tray 5 is increased in accordance with the change value of the output, and on the other hand, when the swing arm 17 rotates clockwise from the predetermined position and the output changes in the opposite direction. In this step, the rotational speed of the tray 5 is decreased in accordance with the output change value.

In other words, when the circumferential speed of the outermost wrapped filament on the tray 5 becomes slower than the running speed of the running filament 1 outside the tray, the filament 1 moves as shown by the solid line in FIG. As the amount of deflection increases, the amount of bulge toward the left hand in the running direction increases,
Accordingly, the swinging arm 17 rotates counterclockwise, and as a result, the rotational speed of the tray 5 increases, increasing the circumferential speed of the wound filament. When the speed is faster than the running speed of the running striated body 1, the amount of deflection of the striated body 1 decreases as shown by the imaginary line in FIG. 3, and accordingly, the swinging arm 17 moves clockwise. As a result, the rotational speed of the tray 5 decreases, thereby decreasing the circumferential speed of the wound filament.

Therefore, the rotational speed of the tray 5 is such that the circumferential speed of the outermost wound wire body is always the same as that of the running wire body 1 outside the tray.
The deflection variation detection device 20 performs correction control so that the deflection variation amount detection device 20 matches the traveling speed of the vehicle.

Note that, as described above, the angle of the swinging arm 17 hardly changes depending on the change in the entry position of the filament 1 due to the gradual increase in the number of windings. Accurately detect only fluctuations in the amount of deflection based on the imbalance between the running speed of the traveling filament 1 and the circumferential speed of the wrapped filament, without being affected by a simple change in the entry position of the filament 1. be able to.

As can be understood from the above description, according to the present invention, the program mechanism controls the tray so that the circumferential speed of the wound filament at the outermost side on the tray matches the running speed of the running filament outside the tray. Since the rotational speed and force are dynamically controlled, the filament can be smoothly wound into a spiral shape using one device, and it has the advantage that the work does not require skill and reduces worker fatigue. , and the error between the circumferential speed and the traveling speed of the filament within the same winding radius is determined by a deflection method that detects the amount of deflection while following the natural deflection change of the filament in the horizontal plane. Since the amount of variation is detected and corrected by the variation detection device, the striatum will not be unnaturally bent, and the striatum will not be bent unnaturally. There are effects such as the ability to easily perform correction control for the above-mentioned errors without causing any fear of adversely affecting the performance of the device.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIGS. 1 to 3 are explanatory diagrams showing a state in which a filament is wound around a tray by implementing the present invention, and FIG. FIG. 2 is an explanatory diagram showing an example of setting the tray rotation speed. 1...Striatum, 5...Tray 6...
... Tray drive means, 7 ... Control section, 9 ...
...Pulse generation circuit, 10...Pulse counter, 11...Gate circuit, 12...
Pulse motor, 13...Angle detector, 15...
... Gear mechanism, 16 ... Support stand, 17 ...
...Swinging arm, 18...Roller, 19...
... Swing angle detector, 20 ... Deflection variation detection device, 21 ... Gear mechanism, 22 ...
Sufu 11 knee axis, 23... guide frame.

Claims (1)

[Claims] 1. A tray drive means with variable speed is provided for horizontally rotating a tray for winding a filament around a vertical axis, and the drive means is used to wind the filament wound on the tray. Each time the radius increases, the rotational speed of the tray is automatically adjusted by the drive means so that the circumferential speed of the outermost wound wire on the tray matches the traveling feed rate of the traveling wire outside the tray. A program mechanism is provided that is preset to change the linear body, and the winding position for winding the filamentous body onto the tray is provided with a program mechanism that is set in advance so as to change the filament body in a direction substantially perpendicular to the running direction of the filamentous body and a winding position for winding the filamentous body onto the tray. a support base that is horizontally moved by the programming mechanism along the direction in which the wrapping radius of the body increases; a swinging arm that is provided on the support base so as to be swingable in the horizontal direction; a pair of rollers that are freely disposed and horizontally sandwich the filamentous body and cause the filament body to come into contact with each other to cause the rocking arm to swing; and a rocking angle detector that detects the rocking angle of the rocking arm. A deflection fluctuation amount detection device is provided to detect the amount of deflection variation in the horizontal direction of the striated body, and the rotational speed of the tray is automatically adjusted and controlled in response to the variation in the horizontal deflection amount of the striated body. A speed control device for a striatal body winding tray.