JPH01203174A - Winding method of linear member - Google Patents

Abstract

PURPOSE:To perform automatic arranged winding of linear member around a drum stably and reliably by catching the state of the linear member wound around the drum as a static image and correcting the control operation of the drum or a traverser based on a detected value. CONSTITUTION:A linear member 13 is wound while being arranged around a drum 12 rotated through a motor 8 through a guide means, i.e. a traverser 17, reciprocated through a motor 9 with respect to the drum 12 in the direction of the rotary shaft of the drum 12. At this time, the state of the linear member 13 wound around the drum 12 is taken as a static image through a CCD camera 2. The position of the linear member 13 is detected based on the static image, then driving of motors 8, 9 for the drum 12 and the traverser 17 is controlled through a computer 15 based on the detected value so as to correct control operation such as reciprocating speed, moving amount and the like of the traverser 17 or the rotary speed of the drum 12. Consequently, automatic arranged winding of the linear member 13 around the drum 12 can be performed stably and reliably.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for winding elongated linear objects such as electric wires around a drum in an aligned manner.

[Prior Art] Conventionally, when winding a linear body such as an optical fiber core on a drum (including a bobbin) automatically and in alignment, the linear body is guided by a traverser that reciprocates in the direction of the rotation axis of the drum. Generally, winding is performed while maintaining a constant relationship between the moving speed of the traverser (the moving speed of the drum if the traverser is fixed and the drum side moves in the axial direction) and the rotational speed of the drum. . In addition, as a method that is one step more advanced than this method, as shown in Fig. 3, the approach angle θ of the linear body 13 to be wound up with respect to the drum is detected by an appropriate sensor, and this θ is maintained at a certain constant value. There is also a method of controlling the moving speed of the traverser (or the moving speed of the drum if the traverser is fixed).

However, with the former method, that is, keeping the moving speed of the traverser and the rotational speed of the drum constant, it is almost impossible to wind in an aligned manner from the beginning to the end of the winding.
There was almost always a need for manual corrections along the way. In other words, human supervision was required throughout. The reason for this is that the winding pitch may actually change little by little due to slight changes in the longitudinal conditions of the linear body, such as its outer diameter, the way the linear body is twisted, the presence of unevenness on the drum surface, etc. It seems to be due to change.

In the latter method, in addition to the above-mentioned reasons, the entrance angle θ of the linear body is determined by the outer diameter of the linear body, the cross-sectional shape, the surface friction coefficient, the winding tension, and the mounting of the sensor. The determination must be made taking into account various conditions such as position, which makes it difficult to set the conditions. Also, in this method, as with the former method, the state of the winding is not checked at all unless a person monitors the winding. Therefore, it was not possible to guarantee that the windings were accurately aligned.

[Purpose of the invention]

In view of the above problems, an object of the present invention is to provide a method that can automatically, more stably, and reliably perform aligned winding of a linear body.

[Structure of the invention]

In order to achieve the above object, the present invention provides a method for winding a linear body around a rotating drum in an aligned manner using a traverser that reciprocates relative to the drum in the direction of the rotational axis of the drum as a guide means. In the method, the state of the linear body wound on the drum is captured as a still image, the position of the wound linear body is detected from the still image, and the traverser is moved based on the detected value. This method is characterized by modifying the control operation such as the speed (1-the moving speed of the drum if the rubber band is fixed), the amount of movement, or the rotational speed of the drum.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic diagram showing an embodiment of the present invention. The present invention will be explained below in order with reference to this figure. First, CCD
(Charge Coupled Device
) The camera 2 momentarily captures as a still image the state in which the linear body 13 is wound around the drum 12 while being guided by the traverser 17 that reciprocates in the direction of the rotation axis of the drum 12.

Reference numeral 1 denotes a stroboscope, which flashes light instantaneously for a very short time, and at the time of this flash, the CCD camera 2 captures the winding state as a still image. The captured still image is then stored in the storage device 3, and this still image is displayed on the display of the image display/processing device 4 as shown in FIG. The image shown in FIG. 2 has been subjected to binarization processing, which is one of the usual image processing techniques.
This figure shows the state of the linear body 13 wound up from the direction of the traverser 17 at right angles to the rotation axis of the drum 12. From this image shown in FIG. 2, for example, the X-axis, Y-axis, and
By instantaneously detecting each shaft axis χ, y, and XE, )'6 with a cursor and comparing these values with each other, at least one of the reciprocating speed of the traverser 17 or the rotational speed of the drum 12 is controlled. Specifically, for example, (1) If the outer diameter V of the X-χBζ linear body 13 is 0, the winding is continued under the same conditions.

(2) When x-χ8>outer diameter of linear body +α VVm'=0, the moving speed of the traverser 17 is decreased or the rotational speed of the drum 12 is increased.

(3) When χ-χ6<outer diameter of the linear body -β y-yB>T, as shown in FIG. In order to indicate that the vehicle has climbed onto the vehicle and is in a state similar to 13A, an alarm will be issued and the traverser 17 and drum 1 will be
Temporarily stop the rotation of step 2.

In addition, the positional relationship between the linear body 13 and the traverser 17, the traverser speed, or the drum 1 in cases (1) and (2)
20 The adjustment width of the rotational speed is determined by considering the winding tension of the linear body 13, the friction coefficient of the surface, the rigidity, the distance between the linear body 13 and the traverser 17, etc.

The series of controls described above are performed at a desired cycle required for automatic winding, and in this case, the flashing cycle of the stroboscope 1 is synchronized with the desired cycle.

Note that when controlling either the moving speed of the traverser 17 or the rotational speed of the drum, or both, based on the output of the image display/processing device 4, the image display/processing device 4 may be
Based on the output of the processing device 4, the computer 5 calculates an appropriate control output. Of course, various conditions such as the surface condition and rigidity of the linear body 13 described above are implanted in advance in this calculator 5. The computer 5 then gives control commands to a motor control device 6.7 that controls each motor 8.9 of the drum 12 and traverser 17. Here, reference numeral 15 indicates a linear body guide of the traverser 17, and 16 indicates a screw for reciprocating the traverser 17. Further, the reference numeral 11 is a pulse generator that detects the number of rotations of the traverser 17, and the number 11 is a pulse generator that detects the number of rotations of a shaft with a screw 16 for moving the traverser 17.

In the embodiment described above, the drum 12 is fixed and the traverser 17 is moved in the axial direction of the drum 12, but there is also a method in which the traverser 17 is fixed and the drum 12 is moved in the axial direction. In this case, the object to be controlled is not the moving speed of the traverser but the moving speed of the drum. Furthermore, in this application, the term "drum" includes all objects to be wound, such as bobbins.

According to the present invention as described above, unlike the conventional method, the relative moving speed of the traverser and the drum can be determined based on the information on the winding state while checking the state of the already wound linear body. Since the rotational speed (number of rotations) of the drum is controlled, the linear body can be wound automatically and more reliably.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to more stably and reliably wind the linear body onto the drum in automatic alignment.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an embodiment of the method for winding a linear body according to the present invention, Fig. 2 is a winding state diagram showing the state of image processing in the present invention, and Fig. 3 shows a conventional method. It is a schematic diagram. 1 - Stroboscope 2 - CCD camera 3 - Storage device 4 - Image display/processing device 5 - Computer 12 - Drum 13 - Linear body 17 - Travasa Patent Applicant
Furukawa Electric Co., Ltd. Diagram 3

Claims (1)

[Claims] In a method for winding a linear body, the linear body is wound in an aligned manner around a rotating drum using a traverser that reciprocates relative to the drum in the direction of the rotational axis of the drum as a guide means. The present invention is characterized in that the state of the linear body being wound is captured as a still image, the position of the wound linear body is detected from the still image, and the control operation of the traverser or drum is corrected based on the detected value. A method for winding a linear body.