JPS63259610A - Manufacture device for slot type cable - Google Patents

Abstract

PURPOSE:To exactly and quickly cope with a pitch variation by providing an engaging pin which is projected to the inside in the radial direction, and engaged to a slot core, on the inner wall of a slot core running hollow part of a collation die. CONSTITUTION:The titled device is provided with a rotational angle detecting device which is provided as one body with the collation die 10, and detects a helix angle of a slot core 1 and drives to rotate a DC servo-motor 12 in accordance with a size direction of its helix angle, and a rotary encoder for detecting the number of rotation and the rotating direction of a feed screw axis 11 and controlling a take-off speed of a take-off device. Also, on the inner wall of a slot core 1 running hollow part of the collation die 10, an engaging pin 10A which is projected to the inside in the radial direction, and engaged to a slot of a slot core 1 is provided. Accordingly, a twist of the slot core is detected by the detection use engaging pin 10A attached to the collation die 10, and as for its detected twist, it is allowed to cope with by moving the collation die of light weight. In such a way, the coping is executed quickly and exactly.

Description

Detailed Description of the Invention (Industrial Application Field) This invention relates to a slot type cable manufacturing device, and more specifically, a tape cable for inserting a plurality of tape core wires into a helical wire slot of a slot core. This invention relates to an apparatus for manufacturing a slot type cable by assembling core wires into slots.

(Prior art) A tape wire in which a plurality of optical fiber core wires are stacked and put together in a tape shape is fitted into a slot around a synthetic resin slot core that is a tension member.
Conventionally, manufacturing equipment for so-called slot-type couplers (also called spacer-type cables) is a cage rotation type in which a slot core is simply taken and a cage carrying a feed-out boppin for the tape core is fitted around the slot core while rotating. There is also a take-up rotation type in which the tape core is taken off while rotating the slot core without rotating the feed-out boppin.

(Problems to be Solved by the Invention) An important technology for manufacturing equipment for such slot-type cables is to detect the twist of the slot core being sent out, move the set die in response to the detected twist,
Furthermore, there are adjustment techniques such as adjusting the take-up speed of the take-off device, but in conventional slot-type cable manufacturing equipment, whether it is a cable rotation type or a take-up rotation type, this slot core torsion detection means is a collection die. Because the slot core is located far away from the slot core, there is a positional and time delay between detecting the twist of the slot core and making adjustments based on the detection results. Ta.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention adopts a take-up rotation method in which the slot core is taken out while rotating, and specifically, the helical linear slot is a slot core delivery device that is rotated at a predetermined rotation speed while sending out a plurality of slot cores; and a slot core delivery device that is rotated at a predetermined rotation speed while sending out a plurality of slot cores; , a take-up device that is rotationally driven at the same rotation speed in the same direction as the delivery direction, and a tape core that is disposed between the delivery device and the take-up device and that sends out the same number of tape core wires as the helical wire. a wire feeding device, a collecting die that guides the tape core wire to the slot of the slot core and is rotatably provided around the running line of the slot core, and a collecting die that is rotatably driven by a DC servo motor and is attached to the collecting die. a feed screw shaft that is screwed into the sliding body, and is provided integrally with the collecting die, detects the torsion angle of the slot core, and rotationally drives the DC servo motor according to the magnitude direction of the torsion angle. and a rotary encoder for detecting the rotation speed and rotation direction of the feed screw shaft and thereby controlling the take-up speed of the take-off device, The present invention provides a tape fiber collecting device, characterized in that an engaging pin is provided on the inner wall of the slot core, the engagement pin protruding radially inward and engaging with the slot of the slot core.

(Function) Twisting of the slot core is detected by a detection engaging pin attached to the collecting die, and the detected twisting can be quickly and accurately responded to by moving the lightweight collecting die. , the collecting die is servo-controlled so that it always returns to a constant position by adjusting the take-up speed.

(Example) (Slot core and tape core) First, the tape core 3 and slot core 1 handled by the present invention will be explained with reference to FIGS. 5 and 6.

Tape heart! Reference numeral 3 refers to a tape-like structure in which a plurality of optical fibers are grouped side by side and extended in the form of a tape, as shown in FIG. It is fitted over and over again. slot core 1
usually has a plurality of slots 2 formed on its outer periphery,
The winding pitch p of this slot 2 is small and is 10
There are various types of shoes, such as 1200s+m, with 0m shoes being 1 larger, but most of them are about 400~7°Omm+.

(Slot core rotation take-off type) Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

In the present invention, a so-called slot core rotation and take-off type device will be described in which a slot core is taken in the center at a speed V while rotating around its own axis at a rotational speed of N''C''C''.

Now, in order to fit the tape core wires 3 into the slots 2 of the slot core 1 one after another as shown in FIG.
When viewed from the position shown in FIG. 1, each slot 2 of the slot core 1 must move in a straight line. In other words, the ratio between the take-up speed V and the rotational speed N of the slot core 1 must be equal to the pitch p of the slots 2 formed on the slot core 1, and the relationship of V/N=p must be maintained.

However, in reality, the tape core wire 3 is the sending boppin 3A.
In reality, the slot pitch fluctuates constantly because the slot 2 may come out twisted or there may be machining errors in the slot 2 itself.

In this invention, this variation in slot pitch is quickly detected at the set of dice, the set of dice is moved to respond to this variation, and the position of the set of dice is returned to a predetermined position using servo control. be.

(Slot core to be used and basic pitch setting) First, to explain the flow of the slot core 1 and tape core wire 3 in Fig. 1, the slot core 1 is sent out from the slot core delivery device 4 at the right end of the figure, and the caterpillar type brake is used. Device 5
After passing through the center hole of the dividing plate 24 and being fitted in the collecting die 10 while receiving a braking force for applying tension at the taping Device 6 (in the figure, one tangential type, two center type,
(A total of 3 machines are entered), is taken up by a caterpillar type take-up device 8 via a coarse winding device 7, and then taken up by a take-up device 9.
It is wound up by.

As already mentioned, since the slot core 1 is taken up while being rotated, the slot core delivery device 4, brake device 5, take-up device 8, winding device 9, etc. each rotate at the same speed to unwind the slot. It performs its original function while being rotated in the opposite direction. Of course, the taping device 7 and the coarse winding device are also rotated.

As shown in more detail in FIG. 4, the rotational speed N of the slot core 1 is determined by the rotation of the driving shaft 22 which is rotationally driven by the main motor 21. As shown in FIG. On the other hand, the pulling speed (■) is determined by the rotation of the caterpillar sprocket of the pulling device 8, and this rotation is controlled by a differential gear that is adjusted by a continuously variable transmission 18 (adjusted manually or by a pilot motor). It is given from the output shaft of device 119. The reason why this is done is that the device of the present invention aims to be a general-purpose machine that can easily adapt to various slot pitches of various slot cores, and the amount of adjustment of the continuously variable transmission 18 to the rotational speed N is When zero,
Intermediate pitch value of slot pitch 400-500 m
The design should therefore be such that the drawing speed V is given by m.

(Detection of Twisted Core of Slot Core) Next, referring mainly to FIG. 2, a device for detecting pitch variations in the slot 2 of the slot core 1, which is a characteristic feature of the present invention, will be described.

The grouping die 10 has a substantially hollow cylindrical shape, is rotatably supported on a base via a suitable bearing, and has the same number of guide holes 10B as the number of slots 2 formed equiangularly. The slot core 1 runs in the hollow part of the die assembly 10, and on the inner wall of this hollow part, there are engaging pins IOA 1 to 1 that engage with the slots 2 of the slot core 1 that protrude inward in the radial direction and run. Two can be installed.

A spur gear 10C is coaxially fixed to the collective die 10,
A spur gear 10D meshing with the spur gear 10C is arranged to rotationally drive an input shaft of a separately provided rotation angle detection device 25 such as a potentiometer.

The entire assembly die 10 is mounted on a sliding body having a female thread that engages with a precision feed screw shaft 11 such as a ball screw, and this feed screw shaft 11 is rotationally driven by a DC servo motor 12. .

Note that the dividing line plate 24 is fixed to the base, and a slot core guide portion 24A is rotatably provided at the center thereof. The slot core 1 slides through the center hole of the slot core guide portion 24A.

If slot core 1 advances now, slot 2 is engaged with engagement pin IOA, so slot core 1 moves to 1.
When the pitch progresses, the set of dice 10 rotates exactly once. In this process, the collecting die 10 inserts the tape core wire 3 into each slot. But slot core 1
If twist appears in the slot 2, the pitch of the slot 2 will be disturbed, and this variation can be detected by the rotation angle detection device 25.

(Adjustment of Movement of Collected Dice) Assume that when the slot core 1 is moving to the left in the figure in the case shown in FIG. 5, it is twisted counterclockwise when viewed from the right end of the figure. In other words, at this time, slot core 1 is the specified 1
Even when the pitch has progressed, the collective die 10 is still 1
It rotates only (360-δ) degrees without reaching the rotation (360 degrees). Therefore, in this case, the insertion of the tape core wire 3 is delayed in accordance with the rotation delay of the slot 2. In other words, the assembly die 10 is It is only necessary to move the slot core 1 slightly to the right in the upstream direction in FIG. This is the left side in FIG. 2, that is, the downstream side. In this way, by moving the collecting die 10 forward and backward, the twisting of the slot core 1 is immediately responded to, and the tape core wire 3 is moved just right into the slot 2.
It can be brought inside.

The device that actually moves the assembled dice 10 is a DC servo motor 12, as shown in FIGS. 2 and 3.
This is a feed screw shaft 11 that is rotationally driven by. As shown in FIG. 3, the assembled dice 10 due to the twisted slot 2 detected by the rotation angle detection device 25
The amount of rotation is compared with that under normal conditions by a comparator 26, and a command is given to the DC servo motor 12 via the DC servo driver 27 in proportion to the angular amount of the difference.

(Adjustment of collection speed) Now, the following problem remains. This is the case if the twist of the slot core 1 happens to be biased in one direction and the clustering die 10 moves more in one direction along the feed screw shaft 11. Since it is actually impossible to manufacture an infinitely long feed screw shaft 11, it is necessary to adjust this point.

As mentioned above, it is possible to immediately respond to the change in the pitch of the slot 2 due to the twisting of the slot core 1 by moving the set of dice 10, but this is only a local and temporary effect, and we cannot allow this to continue for a long time. Of course, it is not possible to deal with cases where the torsion direction is biased in one direction depending on the feed screw shaft having a finite length.

Therefore, if the twist of the slot core 1 is biased in the direction of shortening the slot pitch, for example, the machine recognizes that the slot pitch of the slot core to be used is originally short, and slows down the take-up speed V of the slot core 1. Adjust to In this way, the assembled dice 10 can return to its original position.

That is, the movement of the die assembly 10 is detected by the rotary encoder 13 provided at the end of the feed screw shaft 11,
This is converted into a voltage amount by the F/V converter 14 and DC
input to the servo driver 15 and rotate the DC motor 16 at a speed proportional to this input amount, and the differential gear device 1117
By rotating one of the output shafts 17C, the take-up speed 8 is rapidly increased or decelerated, and the position of the collecting dice 10 is adjusted to return to its original position.

To summarize the above, the control system of the present invention immediately responds to the occurrence of twisting of the slot core 1 by moving the grouping die 10, and at the same time increases or decreases the take-up speed based on the position of the grouping die. It uses feedback control, or servo control, to try to return it to its original state.

(Driving Relationship) If the take-up speed of the slot core 1 is varied as described above, the rotational speed of the taping device 6 and rough winding device 7 must also be changed in accordance with this variation. In order to achieve exactly this, the present invention is characterized in that the cheating device 6 and the coarse winding device 7 are driven from the driven drive shaft 23, which changes according to the fluctuations in the take-up speed described above. It is possible to realize taping that has a good appearance and does not come loose.

Referring to FIGS. 1 and 4, the driving relationship in the present invention, particularly its adjustment, will be explained once again.

The object to be adjusted is the take-up speed V of the take-off device 8. This take-up device 8 is rotated by a driving shaft 22 at a rotational speed preset at the time of machine design, and this rotational speed is constant throughout.

First, the pitch is set according to the value of the slot pitch p of the slot core 1 used at the start of operation.

In other words, the ratio V/N between the take-up speed V and the rotational speed N of the take-up device 8
The take-up speed of the take-off device 8 is set so that the pitch p is equal to the pitch p. For this purpose, differential gear I (19
) and a continuously variable transmission 18.

By the action of a well-known differential gear device, the rotation speed of the output shaft 19B is changed to either clockwise or counterclockwise rotation of the other output shaft 19C relative to the rotation speed of the input shaft 19A. We decide by giving. The desired rotational speed to be applied to the output shaft 19C is applied from the output shaft 18B via the continuously variable transmission 18 from the differential gear device I[17, which will be described later. This shows that the differential gear device I (19) is for pitch initial setting.

As mentioned above, in order to adjust the take-up speed of the take-off device 8, the rotational speed of one output shaft 19C of the differential gear device (■) is changed, but this simply means adjusting the continuously variable transmission 18 itself. This is also possible by changing the rotation of the output shaft 18B. However, this does not allow precise adjustment, so
In this invention, the adjustment is made by changing the rotation speed of the output shaft 17B of the differential gear device [17] as described above.

As already briefly described, the action of the differential gear device l117 is to rotate the DC motor 16 in response to a signal accompanying the positional fluctuation of the set of dice 10, and to reduce the rotation of the spindle of the DC motor 16 via the reducer 20. (Accordingly, the torque increases, and as a result, one output shaft 17C of the differential gear device [17 As a result, the other output shaft 17
The purpose is to give rotation of B a desired number of rotations.

In other words, it can be seen that the differential gear device n17 is used for pitch adjustment during operation.

As is clear from FIG. 4, the driven drive shaft 23 is rotationally driven by the output shaft 17B of the differential gear device ff17. In other words, it has a rotational speed corresponding to the take-up speed that is changed in response to pitch fluctuations of the slot core 1, and therefore, as described above, the taping device driven from the driven drive shaft 23 This results in taping that has a good appearance and does not come loose.

(Effects of the Invention) According to the present invention, first, ■ fluctuations in the slot pitch of the slot core are detected at the cluster die, and the pitch fluctuation is dealt with by moving the lightweight cluster die. This has the effect of making it possible to manufacture a preferred slot type cable that can respond accurately and rapidly to fluctuations. In addition, according to the device of this invention, (1) the slot core is picked up while rotating, and the cage of the tape core wire is not rotated, so relatively high-speed rotation is possible; Using the , it is possible to accurately initialize the pitch and adjust the take-up speed according to pitch fluctuations during operation. Since it is configured to be driven from the driven drive shaft,
The taping operation after assembling the tape core wires does not loosen, resulting in a good finished appearance.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the entire device of this invention, Fig. 2 is a sectional side view showing the collecting die part, Fig. 3 is a servo control system diagram for keeping the position of the collecting die constant, and Fig. 4 is a diagram. 5 is an enlarged perspective view of the slot core, and FIG. 6 is a simplified perspective view and an enlarged sectional view illustrating fitting of the tape core into the slot. DESCRIPTION OF SYMBOLS 1... Slot core, 2... Slot, 3... Tape core wire, 8... Taking-off device, 10... Collecting die,
11...Feed screw shaft, 12...DC servo motor,
17...Differential gear device I, 18...Continuously variable transmission, 1
9... Differential gear device ■, 21... Main motor agent Patent attorney Masu 1) Takeo Figure 5 Figure 6

Claims (1)

[Claims] 1. (a) A slot core delivery device (4) in which a helical linear slot (2) is rotated at a predetermined rotational speed while delivering a plurality of slot cores (1) formed therein. (b) While taking the slot core (1) at a take-up speed determined by the pitch p of the helical wire and the rotation speed of the delivery device (4), maintain the same rotation speed in the same direction as the delivery direction. (c) a tape disposed between the sending device (4) and the taking device and feeding out the same number of tape core wires (3) as the helical wire; (d) a gathering die (10) that guides the tape core wire (3) to the slot of the slot core and is rotatably provided around the running line of the slot core; (e) a feed screw shaft (11) rotationally driven by a DC servo motor (12) and screwed into a sliding body attached to the die assembly; (f) provided integrally with the die assembly (10); a rotation angle detection device (25) that detects the torsion angle of the slot core and rotationally drives the DC servo motor (12) according to the magnitude direction of the torsion angle; (g) the rotation speed of the feed screw shaft; and a rotary encoder (13) for detecting the direction of rotation and thereby controlling the take-up speed of the take-off device (8), and a rotary encoder (13) for detecting the rotation direction and thereby controlling the take-up speed of the take-off device (8), and a A tape fiber gathering device characterized in that an engaging pin (10A) is provided that protrudes and engages with a slot of the slot core.