JPH0515629B2 - - Google Patents

Description

[Detailed Description of the Invention] [Prior Art] The present invention relates to a method for winding a long, stretchable object such as a flexible electrical conduit while aligning the object from a source drum to a winding drum. .

[Background technology]

A method for winding long objects such as dividing long objects into small pieces by winding them from a source drum to another drum is, for example, rotating only the drum on the winding side with power.
The unwinding of long objects from the original drum and the feeding of long objects are also carried out only by the rotation of this drum on the winding side. In this method, in order to keep the winding tension constant, a tension buffer is provided between both drums, and a brake is also provided on the source drum, and the strength of the brake applied to the source drum is adjusted depending on the state of the tension buffer. I was starting to adjust it.
However, this method cannot be used for stretchable long objects such as flexible electrical conduits because a large tension is applied to the long objects. Conventionally, methods for winding a stretchable long object from one drum to another have been to connect both drums directly and wind the material manually, or to use power at the lowest possible speed. Various methods have been used, such as winding. However,
In the latter method, since no tension buffering means is provided between the two drums, the tension and feed speed change due to changes in the number of stages on both drums due to winding. With each winding, the speed of traverse must also be changed, e.g.
With heart cam type traversers, the cam had to be replaced for each stage. In any of the above methods, in order to wind a long object in alignment without applying large tension, winding must be done at an extremely low speed, and in either case, a large amount of manpower is required. Therefore, productivity is low.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for winding up a stretchable long object at high speed, low tension, and automatically in alignment.

[Disclosure of the invention]

In order to achieve the above object, the present invention has a traverse system for traversing a long object using a traverser while rotating a source drum around which a stretchable long object is wound and a winding drum for winding the long object. A method for winding a long object by aligning and winding the long object on the winding drum by winding the long object on the winding drum, wherein fluctuations in tension applied to the long object at the time of winding are suppressed by a mechanical tension buffering means. Both drums are rotated at a high speed during constant speed winding, and when a predetermined amount of winding is completed, both drums are rotated at a low speed while an end treatment means is operated to perform end treatment. While both drums are rotating, the rotational speeds of both drums are detected, and based on the results, the rotating means of both drums are individually controlled to control the feeding speed of the long object during high-speed rotation. and at each stage during low-speed rotation, the traverse speed by the traverser is adjusted according to the rotational speed of the winding drum, and at the same time, the fluctuation in the amount of buffering by the mechanical tension buffering means is The amount of traverse by the traverser is also detected, and when controlling the rotational speed of the source drum, the detection result of the fluctuation in the amount of buffering by the mechanical tension buffering means is taken into consideration. The gist of this method is to keep the tension between both drums constant by taking into account the detection results of the traverse amount.

The present invention will be explained below based on the drawings showing one embodiment thereof. The figure shows a case where the flexible electrical conduit is divided into small pieces and wound onto a winding drum.

As the original drum 1 is rotated by the rotating means 2, the flexible electric conduit 3, which is a stretchable elongated object, is continuously fed out. The flexible conduit 3 is passed through a tension buffer means 4 consisting of an upper fixed pulley 4a, a lower movable pulley 4b, and an upper fixed pulley 4c in this order, and is wound around a winding drum 6 while being aligned by a traverser 5. It has been taken. In this embodiment, as described above, a fixed pulley and a movable pulley were used as the tension buffering means. It may be in the form of

A microcomputer 8, which is a part of the arithmetic processing means 7, inputs the size of the flexible conduit 3, which is input from the keyboard 9 or the floppy disk 10.
Control signals are output to control circuits 11 to 13 consisting of comparator circuits and amplifiers and various processing means in accordance with winding and traverse conditions and a winding process program. FIG. 2 shows an example of control of each process and winding speed (line speed) by a program input to a microcomputer.
In the program shown in the figure, after the start end of the long material 3 is input, the winding speed is accelerated until the winding speed input in advance is reached and winding continues, and the winding speed is decelerated just before the winding of the set winding amount is completed. Then, various end treatments are performed, winding is stopped, and one cycle of bundling is completed. In the method for winding up a long object of the present invention, it is of course possible to use programs other than the program shown in FIG.

A tachogenerator 14 is connected to the shaft of a variable speed induction motor, which is the rotation means 2 of the original drum 1, in order to detect its rotation speed. A synchro radiator 15 is connected thereto, which converts the upper and lower sides of the rotation angle into rotation angles and detects the rotation angles. The control circuit 11 inputs the detection value of the synchronizer 15 and the control signal of the microcomputer 8, and also inputs the detection result signal of the tachogenerator 14 that detects the rotational speed of the rotating means 2 as feedback, and basically performs the following steps. is microcomputer 9
The feeding speed of the conduit 3, which is set and controlled by the control signal of
It is controlled so that it is fed out at a speed as instructed by the microcomputer 8 while maintaining a constant tension. A tachometer generator 16 is connected to the shaft of a stepping motor, which is the driving means 5a of the traverser 5, for detecting its rotation angle.
The amount of traverse by the traverser 5 can be calculated from the detection result of the rotation angle, and a tachogenerator 18 for detecting the rotation speed is mounted on the shaft of the variable speed induction motor which is the rotation means 17 for the winding drum 6. It is connected. Between the tension buffering means 4 and the traverser 5, there is a tachogenerator 1 for detecting the winding speed of the flexible conduit 3.
9 is provided, and its detected value is directly input to the microcomputer 8. The microcomputer 8 monitors the winding speed information sent from the tachometer generator 19 and sends a control signal to the drive means 5a of the traverser 5 according to the pre-input conditions and program to drive the flexible conduit 3. Perform a traverse. The traverse speed of the traverser 5 is basically determined by the control signal from the microcomputer 9 and the winding drum 6 detected by the tachogenerator 18.
The rotational speed of the winding drum 6 is set and controlled so that the traverse by the traverser 5 is synchronized with the winding of the flexible conduit 3 by the winding drum 6. The detection result signal is corrected by taking into consideration the detection result signal of the traverse amount calculated from the rotation angle of the traverser drive means 5a. In this embodiment, the reversal control of the traverse is automatically performed by a limit switch provided on the traverser 5.
In the method for winding up a long article of the present invention, the reversal of the traverse may be controlled by the microcomputer 8. The detected value of the tachogenerator 18, which represents the winding speed of the winding drum 6, is also input to the control circuit 13 via the variable means 20. The control circuit 13 is a microcomputer 8
The control signal from the winding drum 6 is compared with the detected value corresponding to the rotation speed of the winding drum 6,
and controls the rotational speed of the winding drum 6. The variable means 20 is provided to manually correct the relationship between the winding speed and the traverse amount depending on the size of the flexible conduit 3.
Flexible conduit of various sizes with one winding device 3
Winding operations can be performed. When the set winding amount input to the microcomputer 8 approaches the end of winding, the microcomputer 8 outputs a control signal to the long object cutting means 21, 21, which is the first end processing means, and the cutting means 2
1 and 21 are activated, the cut end is wound onto the winding drum 6, and at the same time, the feeding of the flexible electrical conduit 3 from the original drum 1 is stopped. A control signal is input from the microcomputer 8, and the final stage bending means 22, which is a second end processing means, is activated, and the end of the flexible conduit 3, which is being wound on the winding drum 6, is wound on the drum. The winding drum 6 is curved to eliminate warping when
The end is wound up and the rotation of the winding drum 6 is stopped. When the rotation of the drum 6 stops, a control signal is input from the microcomputer to the binding means 23, which is a third end processing means, and the winding drum 6 is bound, completing one cycle of winding. When a new winding drum 6 is supplied to the winding side, the rotating means 2 of the original drum 1 rotates again to send out the flexible conduit 3, and the starting end guide cylinder 24, which is the fourth end processing means, is connected to the microcomputer. 8
The flexible conduit 3 is sent to the traverse head position of the traverser 5. The flexible electrical conduit 3 fed into the traverse head of the traverser 5 is further fed out to a new position on the winding drum 6 by the rotation of the original drum 1, and is attached to a hook provided on the winding drum 6. The leading end is hooked, the starting end input is completed, and one new winding cycle is started. In the above embodiments, the end treatment of the long object includes cutting, end bending,
Although the respective processes of bundling and guiding of the starting end have been shown, the type of process is not limited in the method for winding up a long object of the present invention as long as it can be operated when a control signal is input from the microcomputer.

In the above embodiment, a tachometer generator is used to detect the rotation of both drums, the rotation of the traverser, and the winding speed, and a synchronizer is used to detect the buffer amount. In the winding method, the above-mentioned detection means are not limited to these, and various rotation, angle, and position detection means used in ordinary automatic control devices and the like may be employed. Further, for example, the amount of buffering may be detected by calculating the difference between the total amount of elongated objects fed into the tension buffering means and the total amount of elongated objects fed from this means.

In the method for winding up a long object of the present invention, as a means for rotating both drums and a means for driving a traverser,
It is of course possible to use other motors and power sources.

In the illustrated embodiment, a screw feed type traverser is used, but other types of traversers may be used in the method for winding up a long object of the present invention.

As described above, the method for winding long objects according to the present invention can adjust the winding speed according to the program and keep the tension between both drums constant at all times. Even stretchable long objects such as can be automatically wound up at high speed. In the method for winding up a long article according to the present invention, end processing is automatically performed according to the program, and each process from inputting the starting end of the long article to bundling can be automated. In the illustrated embodiment, the traverser can also be adjusted automatically, so that the winding of long objects can be completely automated.

That is, in this invention, it is necessary to control at least the rotational speed of both drums in order to adjust the feeding speed of the long object to a predetermined speed according to each winding stage and at the same time keep the tension between both drums constant. However, by controlling the operation of the traverser, etc., it is possible to align and wind up long objects at higher speed and with higher quality. In addition, in order to control the rotational speed of both drums as described above,
It is necessary to detect at least the rotational speed of both drums, but it is also necessary to detect the relationship between the rotational speed of the winding drum and the moving position of the traverser, the feeding speed of long objects, the amount of buffering of the tension buffering means, etc. By controlling the rotational speed of both drums and the operation of the traverser based on the detected values, more precise and better alignment and winding work can be realized. The so-called automatic control methods described above, from detection of rotational speed and position to calculation processing of detected values and operation control of each operating member, include the method using the microcomputer described above, as well as the normal automatic control method. Needless to say, various control methods used in devices etc. can be applied.

〔Effect of the invention〕

The method for winding up a long object of the present invention is configured as described above, and even when it is a stretchable long object that is extremely easy to stretch, such as a flexible electric conduit, the method can be used from the start of the winding operation. The tension between both drums can be kept constant at all times when the long object is traversed and wound in alignment on the winding drum while adjusting the rotational speed of both drums at each stage until the end of the work. This enables long objects to be wound in alignment and in good quality at high speed without stretching or disordering the alignment. That is, in addition to the basic tension adjustment by controlling the rotational speed of both drums, supplementary tension adjustment is performed by absorbing tension fluctuations using a mechanical tension buffering means and correcting the traverse speed depending on the traverse amount. , more precise and smooth tension adjustment is performed. In particular, in order to quickly deal with complex tension fluctuations at each stage of the winding operation by only controlling the rotational speed of both drums, the drive mechanism and rotation control mechanism of the drums must be overworked, and complicated controls may be required. Although a program is required, the method and device for controlling the rotational speed of both drums can be simplified by using the mechanical tension buffering means described above.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing one embodiment of the present invention, and FIG. 2 is a graph showing the progress of control by a program of this embodiment. 1... Original drum, 2... Rotating means, 3... Long object, 4
...Tension buffering means, 5... Traverser, 6... Winding drum, 7... Arithmetic processing means, 18... Rotating means, 2
1, 22, 23, 24... end treatment means.

Claims (1)

[Scope of Claims] 1. While rotating the source drum around which the stretchable long object is wound and the winding drum that winds up the long object, the source drum is traversed by a traverser. A method for winding a long object by aligning and winding the long object on a winding drum, wherein fluctuations in tension applied to the long object during winding are absorbed by a mechanical tension buffering means, During constant speed winding, both drums are rotated at high speed, and when winding of a predetermined amount is completed, both drums are rotated at low speed while the end treatment means is operated to perform end treatment, and both drums are rotated. While letting
By detecting the rotational speed of both drums and controlling the rotation means of both drums separately based on the results, the feeding speed of the long object can be adjusted to a predetermined value at each stage during high-speed rotation and low-speed rotation. and adjusting the traverse speed by the traverser in accordance with the rotational speed of the winding drum, and at the same time detecting fluctuations in the amount of buffering by the mechanical tension buffering means and the amount of traversing by the traverser. When controlling the rotational speed of the source drum, the result of detecting a variation in the amount of buffering by the mechanical tension buffering means is taken into account, and when controlling the traverse speed by the traverser, the result of detecting the amount of traverse by the traverser is taken into consideration. A method for winding a long object, characterized in that the tension between both drums is kept constant. 2. The method for winding up a long object according to claim 1, wherein the end treatment includes cutting the long object. 3. The method for winding up a long article according to claim 2, wherein the end treatment includes bending the end, binding the drum, and guiding the start end. 4. A method for winding up a long object according to any one of claims 1 to 3, wherein the long object is a flexible electrical conduit.