JPH0671984B2 - Linear body traversing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traverse device for aligning and winding a linear body on a winding drum, and particularly to a traverse device parallel to the axis of the winding drum. The present invention relates to a traverse device capable of controlling the moving speed of a traverse table that reciprocates.

[Conventional technology]

As a traverse device of this type, for example, Japanese Patent Laid-Open No. 52418/1982
No. 4 and Japanese Patent Laid-Open No. 58-63693, the technique of which will be described below with reference to the drawings.

FIG. 4 is a plan view showing a conventional traverse device. In the figure, 1 is a linear body such as a cable, 2 is a winding drum for winding the linear body 1, and the winding drum 2 is a motor (not shown). Is driven to rotate in the direction around the axis.

Reference numeral 3 denotes a first pulse generator provided on the drum shaft of the winding drum 2, and the first pulse generator 3 generates a pulse in accordance with the rotation of the winding drum 2.

Reference numeral 4 denotes a traverse shaft having a predetermined pitch on its outer peripheral surface, which is formed by engraving screws in two directions so as to cross each other. The traverse shaft 4 is parallel to the drum shaft of the winding drum 2 together with the guide shaft 5. It is installed in.

6 is a servo motor, 7 is a chain for power transmission, 8 is a speed reducer provided at one end of the traverse shaft 4, and the traverse shaft 4 is rotationally driven by the servo motor 6 via the chain 7 and the speed reducer 8. It is becoming like this.

Reference numeral 9 is a traverse base, the lower part of which is screwed into the traverse shaft 4 and is slidably engaged with or fitted to the guide shaft 5, and the traverse base 9 is wound according to the rotation of the traverse shaft 4. It is adapted to reciprocate in parallel with the drum 2.

Reference numerals 10a and 10b denote columnar guide rollers which are provided upright on the traverse table 9 and are each rotatable. The guide rollers 10a, 10b are for determining the supply position to the winding drum 2 of the linear body 1 sent through between the fixed guide rollers 11a, 11b arranged at the front position thereof, The linear body 1 is wound around a winding drum 2 after passing between the guide rollers 10a and 10b.

Reference numeral 12 is a second pulse generator provided on the traverse shaft 4, and is adapted to generate a pulse at every predetermined rotation angle of the traverse shaft 4.

13 is the first pulse generator 3 and the second pulse generator 12
And a controller to which the servo motor 6 is connected.
A counter 13 counts the pulse output from the second pulse generator 12 based on the pulse output from the first pulse generator 3 and compares the pulse with a predetermined number of pulses set in advance. When the number of pulses counted by this counter is smaller than the set number of pulses, the servomotor 6 increases the rotational speed of the traverse shaft 4, and the number of counted pulses is greater than the set number of pulses. At this time, the rotational speed of the traverse shaft 4 is reduced to correct the moving speed of the traverse base 9.

That is, in other words, the rotation speed ratio of the traverse shaft 4 to the diameter of the linear body 1 is set in the controller 13, and the controller 13 is controlled by the signal output from the second pulse generator 12 based on this. The moving speed of the traverse table 9 is controlled by increasing or decreasing the rotation speed ratio.

This configuration changes the winding position of the linear body 1 on the winding drum 2 when the linear body 1 drawn by a drawing machine (not shown) and sent is wound by rotating the winding drum 2. Accordingly, the traverse base 9 is reciprocally moved by the rotation of the traverse shaft 4, whereby the guide rollers 10a and 10b on the traverse base 9 sequentially guide the linear body 1 to the winding position. In the winding operation, as described above, the controller 13
Controls the moving speed of the traverse table 9 and automatically corrects the delay or advance of the moving speed. Therefore, irrespective of the fluctuation of the rotation speed of the winding drum 2 or the fluctuation of the rotation speed of the traverse shaft 4, It is possible to maintain the characteristic that the linear bodies 1 can always be aligned and wound on the winding drum 2.

[Problems to be solved by the invention]

However, in the above-described conventional traverse device, the number of pulses corresponding to the diameter of the pre-formed linear body is set in the counter setting section of the controller, and this set number of pulses and the output from the first pulse generator. Second counted based on pulse
Since the feed pitch of the traverse table, that is, the moving speed, is adjusted so that the number of pulses output from the pulse generator of Although it is possible to align and wind on the winding drum, there is a problem that it is not possible to align and wind when the diameter of the linear body changes in the middle.

The present invention has been made to solve such a problem. Even when a cable or the like whose diameter changes in the middle, that is, a linear body, the linear body is aligned and wound on a winding drum. It is an object of the present invention to realize a traverse device capable of performing the above.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides one guide roller on a traverse table so that it can move linearly so that it can approach and separate from the other guide roller.
This one guide roller is always urged so as to press the linear body against the other guide roller, and when this one guide roller moves straight due to the change in the diameter of the linear body, The measuring means is provided for measuring the changed diameter of the linear body from the diameter movement and outputting the signal to the control means.

[Action]

The present invention having the above-described configuration, in the operation of winding the linear body by the winding drum while guiding the linear body to the winding position by the movement of the traverse, if the diameter of the linear body changes during the winding, the change occurs. In response to this, one of the guide rollers moves linearly, and the diameter of the linear body changed by the measuring means is measured from this linear movement, and a signal corresponding to the diameter is output to the control means.

Thereby, the rotation speed ratio of the traverse shaft to the diameter of the linear body is changed by the control means, and the moving speed of the traverse platform is controlled based on the changed rotation speed ratio.

Therefore, according to this, the movement speed of the traverse base that always corresponds to the diameter of the linear body can be obtained, and based on this, the delay or advance of the traverse base movement speed can be automatically corrected. It is possible to align and wind even the linear body whose diameter changes inside the winding drum.

〔Example〕

 Embodiments will be described below with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of a traverse device according to the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. 3 is a front view of the portion shown in FIG.

In the figure, 2 is a winding drum, 3 is a first pulse generator,
4 is a traverse shaft, 5 is a guide shaft, 6 is a servo motor,
7 is a chain, 8 is a reducer, 9 is a traverse stand, 10a and 1
Reference numeral 0b is a guide roller, 11a and 11b are fixed guide rollers, 12 is a second pulse generator, and 13 is a controller.
Since they correspond to those in the drawing and are basically configured in the same manner, they are shown with the same reference numerals, but the present embodiment is different in the following points.

That is, in this embodiment, one of the guide rollers 10a and 10b provided on the traverse base 9, for example, the guide roller 10b is provided so as to be vertically movable so as to be able to approach and separate from the other guide roller 10a, and 2 and 3
As shown in the figure, the guide roller 10b is guided by the spring 14 so that a linear body described later is always pressed against the guide roller 10a by the guide roller 10b.
Urged to the side.

Further, a rack 15 extending in the direction opposite to the guide roller 10a side is attached to the shaft of the guide roller 10b, and a pinion 16 meshing with the rack 15 is rotatably provided on the traverse table 9 and the traverse table 10b. A third pulse generator 17 is mounted coaxially with the pinion 16 on the lower surface side of 9, and the pulse generated from the third pulse generator 17 is sent to the controller 13.

Here, when the guide roller 10b moves linearly according to the diameter of the linear body described later, the third pulse generator 17
A pulse corresponding to the diameter of the linear body is generated from the rotation angle of the pinion 16 with which the rack 15 meshes, and the pulse number set by the controller 13, that is, the second pulse is generated based on this pulse.
The number of pulses to be compared with the pulse output from the pulse generator 12 is changed.

That is, in the present embodiment, the rack 15, the pinion 16 and the third pulse generator 17 constitute a measuring means for measuring the diameter of the linear body from the linear movement of the guide roller 10b, and the pulse corresponding to the measured diameter is signaled. Is output as.

Reference numeral 18 denotes a linear body such as a cable, which has a structure in which the diameter changes in the middle as shown in the figure.

Reference numeral 19 in FIG. 3 is a cover provided on the traverse base 9 for protecting the linear body 18 and the like.

Next, the operation of the above configuration will be described.

First, the linear body 18 is passed between the fixed guide rollers 11a and 11b, and is pressed and held by the guide roller 10b on the traverse table 9 by the guide roller 10b.

Therefore, in this state, the linear body 18 is taken by a take-up machine (not shown), and the traverse shaft 4 is rotated by the servo motor 6 via the chain 7 and the speed reducer 8 in accordance with this, whereby the traverse stand 9 is moved. While moving in the arrow direction shown in FIG. 1 to guide the linear body 18 to the winding position,
The winding drum 2 is rotated by a motor (not shown), and the linear body 18 is wound around the rotating drum 2.

In this way, the winding operation of the linear body 18 is performed, and the moving speed of the traverse table 9 is controlled by the controller 13 in this winding operation in the same manner as in the conventional case, so that the diameter of the linear body 18 changes. The portion not to be wound is aligned and wound on the winding drum 2 as in the conventional case.

On the other hand, when the diameter of the linear body 18 changes during winding, the following operation is performed in this embodiment.

That is, when the diameter of the linear body 18 becomes larger than the diameter of the portion wound up to that point, the guide roller 10b is separated from the guide roller 10a while resisting the biasing force of the spring 14 according to the diameter. The rack 15 mounted on the shaft of the guide roller 10b linearly moves integrally with the pinion engaging with the rack 15.
16 rotates together with its axis.

When the linear movement of the guide roller 10b is converted into the rotational movement of the pinion 16 by the rack 15 as described above, the number of pulses corresponding to the diameter of the linear body 18 is changed by the amount of the rotation to generate the third pulse generator. 17 is sent to the controller 13, which changes the set pulse number of the controller 13, that is, the rotational speed ratio of the traverse shaft 4 to the diameter of the linear body 18, based on the changed new set pulse number. The controller 13 controls the moving speed of the traverse table 9.

That is, the third output that is output according to the change in the diameter of the linear body 18
The pulse number output from the pulse generator 17 is set as the set pulse number N of the controller 13, and the pulse output from the first pulse generator 3 corresponds to the set pulse number N and the rotation angle of the winding drum 2. The number n of pulses from the second pulse generator 12 counted based on the above is compared, and if N> n, the rotational speed of the servomotor 6 is increased, and conversely, if N <n. Decelerates the rotation speed of the servomotor 6 to drive the traverse shaft 4 driven via the chain 7 and the speed reducer 8.
The moving speed of the traverse table 9 is controlled by increasing or decreasing the rotation speed of the traverse table 9.

As a result, it becomes possible to always control the moving speed of the traverse table 9 corresponding to the diameter of the linear body 18, that is, the feed pitch, and thereby the linear body 18 can be guided to the correct position of the winding drum 2. Therefore, the winding drum 2 can be aligned and wound.

In the above-described embodiment, the case where the diameter of the linear body 18 increases from the middle is described, but the moving speed of the traverse base 9 can be controlled in the same manner even when the diameter of the linear body 18 decreases from the middle, and the winding is performed in the same manner. The drum 2 can be wound in line.

〔The invention's effect〕

As described above, according to the present invention, when the diameter of the linear body changes during winding, one of the guide rollers on the traverse base moves linearly, and from this linear movement, the changed diameter of the linear body is measured. By sending the signal to the control means by measuring with, by changing the rotational speed ratio of the traverse shaft to the diameter of the linear body by the control means by this, the traverse table of the traverse table that always corresponds to the diameter of the linear body. Get the speed of movement,
Based on this, since the delay or advance of the traverse table moving speed is automatically corrected, even if the linear body whose diameter changes during winding, it is aligned with the winding drum and wound. The effect that can be obtained is obtained.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of a traverse device for a linear body according to the present invention, FIG. 2 is a plan view of a main part of FIG. 1, FIG. 3 is a front view of a portion of FIG. FIG. 4 is a schematic plan view showing a conventional linear body traverse device. 2: Take-up drum, 3: First pulse generator, 4: Traverse axis, 6: Servo motor, 8: Reducer, 9: Traverse stand, 10a,
10b: guide roller, 12: second pulse generator, 13: controller, 14: spring, 15: rack, 16: pinion, 17: third
Pulse generator, 18: linear body

Claims (1)

[Claims] 1. A traverse shaft arranged parallel to an axis of a rotatable winding drum for winding a linear body, and a traverse table which reciprocates on the traverse shaft by the rotation of the traverse shaft. And two guide rollers mounted on the traverse base to determine the position of the linear body wound by the winding drum, and the moving speed of the traverse base by increasing or decreasing the rotation speed of the traverse shaft. In a linear body traverse device provided with a control means for controlling the above, one of the guide rollers on the traverse table is provided so as to be able to move linearly so as to approach and separate from the other guide roller, and Of the guide roller is always urged against the other guide roller so as to press the linear body, and the one guide roller moves straight by the change of the diameter of the linear body. When the linear body moves, a measuring means for measuring the changed diameter of the linear body from its linear motion and generating a signal thereof is provided, and the diameter of the linear body by the control means based on the signal from the measuring means. A traverse device for a linear body, characterized in that the rotational speed ratio of the traverse shaft to the is increased or decreased.