JPH0313329B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a double twisting machine.

[Background of the invention]

In the above-mentioned double-combustion yarn machine, as is known, the yarn is unwound from the yarn supply package, enters the spindle axis, is given appropriate tension by a tension device, is ballooned by a rotating rotary disk, is twisted, and is then wound. It is wound into a package. The rotary disk is fixed to a spindle, and one rotation of the spindle results in two twists. That is, the number of twists per meter is expressed by the following equation.

Number of twists=spindle rotational speed (rpm) x 2/yarn speed (m/min) Note that the yarn speed in the above equation depends on the yarn winding speed of the winding package.

By the way, the number of twists mentioned above may be changed depending on the type and thickness of the yarn to be fed, or even if the yarn is of the same type, it may be twisted strongly (strongly twisted yarn) or lightly twisted (slightly twisted yarn). However, the number of twists mentioned above may be reset before the double twisting machine starts operating. In particular, in recent years, as in many other fields, the yarn twisting industry has been promoting high-mix, low-volume production, and the number of times the number of twists is changed is increasing.

Here, the drive-related structure of a conventional double twisting machine will be briefly described. The spindle of the double twisting machine, in which many spindles are arranged in parallel, can be rotationally driven by a running endless belt. The endless belt is wound around a pair of pulleys, one pulley is connected to the output shaft of a drive motor, and the driven rotational force of the rotational shaft of the other pulley is used as the rotational force of the take-up package. ing. That is, the motor for rotating the spindle and the motor for rotating the take-up package are the same. This is for the economical reason of minimizing power consumption by using only one motor.

In a double twisting machine with the above structure,
The output shaft of the drive motor and the rotating shaft of the drum that presses against the winding package and transmits rotational drive are connected by several gears. Conventionally, when resetting the number of twists, the above gears are connected to another gear. The rotational speed of the drum was changed by changing the gear ratio. That is, since there is a single drive source, if the rotation speed of the drive motor is changed in order to change the rotation speed of the drum, the rotation speed of the spindle will change accordingly, and the number of twists will not change. For example, if the number of rotations of the drive motor is doubled in order to double the number of rotations of the drum, the number of rotations of the spindle will also be doubled, and the number of twists will not change at all according to the above equation.

However, changing the number of twists by changing the gears as described above has the problem that changing the gears is cumbersome, messy, or the desired number of twists cannot be obtained because the gears are mistaken for similar gears. There was a problem in that the gear change was time-consuming and the number of twists could not be changed quickly, making it impossible to cope with the above-mentioned high-mix, low-volume production.

[Means for solving problems]

This invention connects the output shaft of a single drive motor to the drive pulley of an endless belt that contacts the spindle and applies rotational force to the spindle, and to the rotating shaft of a drum that presses against the take-up package and applies rotational force to the package. A continuously variable transmission is interposed between the output shaft of the drive motor and the rotating shaft of the drum, and a twist number input means and the continuously variable transmission are operated to change the speed in accordance with the input twist number. and control means.

〔Example〕

FIG. 1 shows a double twisting machine according to the present invention and a drive mechanism for the double twisting machine. The above double twisting machine 1
has multiple spindles arranged side by side.

Reference numeral 2 indicates a cover for the yarn supply package, and the yarn supply package is placed inside the cover 2. 3 indicates a spindle, which is in contact with the running belt 4. The take-up package 5 is in pressure contact with a actively rotating drum 6, and is given rotational force by the drum 6. 7 indicates a traverse guide, and 8 indicates a feed roller.

Next, the drive mechanism 10 will be explained. The endless belt 4 has a pair of first and second pulleys 1
It is wrapped between 1 and 12. Reference numeral 13 indicates a drive motor, and two third and fourth pulleys 15 and 16 are fitted to the output shaft 14 of the motor 13, and one of the third and fifth pulleys 15 and 17 is connected to a belt. A belt 20 is wound around the other fourth pulley 16 and sixth pulley 19. The first pulley 11 and the fifth pulley
The pulleys 17 are fitted on both ends of the shaft 21, and the output of the drive motor 13 is transmitted to the running belt 4 via the output shaft 14, the third pulley 15, the belt 18, the fifth pulley 17, and the first pulley 11. The belt 4
The spindle 3 is rotated by running.

The sixth pulley 19 is fixed to one end of a shaft 22, and the other end of the shaft 22 is connected to a speed change belt device 5, which will be described later.
Connected to 0. Reference numeral 23 indicates a deceleration box, and a plurality of gears are installed in the box 23, which inputs the rotational force from the output shaft 51 of the speed change belt device 50, decelerates the speed at a constant rate, and simultaneously changes the direction of rotation. ing.

A seventh pulley 25 is fitted onto the output shaft 24 of the deceleration box 23. As shown in FIG. 3, a belt 30 is wound around the seventh pulley 25, the eighth pulley 27 fitted on the support shaft 26, and the ninth pulley 29 fitted on the support shaft 28. The drum 6 is fitted onto the support shaft 26 at a predetermined interval, and a three-stage pulley 31 is fitted onto one end of the support shaft 26. Further, the feed roller 8 is fitted onto the support shaft 28 at a predetermined interval.

A belt 34 is wound around the three-stage pulley 31 and the three-stage pulley 33 fitted to one end of the shaft 32. The other end of the shaft 32 is connected to gears 35 and 36.
It is connected to the grooved drum 37 by. A cam groove 38 is formed in the drum 37.
The camshaft 39 is fitted into the camshaft 39. A reciprocating rod 40 is fixed to the camshaft 39, and the traverse guide 7 is fixed to the rod 40 at a predetermined interval. With the above configuration,
The output of the drive motor 13 passes through the belt 20, the variable speed belt device 50, the deceleration box 23, and the belt 30, and then the support shaft 26 of the drum 6 and the feed roller 8.
28 and rotate the drum 6 and feed roller 8, respectively.

Further, the rotation of the support shaft 26 further increases the rotation of the belt 3.
4 to the grooved drum 37, and the drum 37
As the camshaft 39 moves along the groove 38 due to the rotation of the traverse guide 7, the traverse guide 7 reciprocates.

Next, the speed change belt device 50 will be explained based on FIG. 2. A belt 54 is wound between the input pulley 52 and the output pulley 53.
The input pulley 52 has outer and inner washers 55,5
6, and a holder 57 is fixed to the outer washer 55. control motor 5
8 is connected to the holder 57 via a clutch 60, and the outer washer 55 is movable in the direction of the shaft 59 relative to the inner washer 56 by the operation of the motor 58. Inner wash 5
6 is immovable. The inner sides of both washers 55 and 56 are tapered 61 and 62, respectively.
The engagement position between the belt 54 and the washers 55, 56 changes depending on the distance between the washers 55, 56. That is, when the separation distance is small, the belt 54 engages with the washers 55, 56 near the outer peripheries of the washers 55, 56, and the input pulley 5
The diameter of the winding of No. 2 is large, and conversely, when the above-mentioned separation distance is large, the belt 54 is attached to both washers 55, 5.
The input pulley 52 is engaged with the washers 54 and 56 near the inner diameter of the input pulley 52, and the diameter of the input pulley 52 becomes small. As described above, by changing the diameter of the wrap around the input pulley 52 through the operation of the control motor 58, it is possible to change the rotational speed output from the output side 51 of the output pulley 53. . The clutch 60 causes the motor 58 to
The output shaft 59 and shaft 63 can be selectively connected and uncoupled.

When the control motor 58 is operated, the clutch 60 is connected, and when the drive motor 13 is operated, the clutch 60 is disengaged.

Prior to the operation of the double twisting machine 1, when it is necessary to change the number of twists, the desired number of twists T is inputted from the input board 64 as shown in FIG. The input value to the input board 64 is input to the control board 6.
5 is input. In the control board 65, the yarn speed Y is determined by the following equation based on the twist number T and the spindle rotation speed S.

Y=2S/T After the above yarn speed Y is determined, the control motor 5 is operated in the variable speed belt device 50 in order to obtain a speed change amount sufficient to obtain the yarn speed Y.
Controls the output of 8.

In FIG. 1, a detection object 66 made of a conductive material and having a convex portion or a concave portion formed in a disk-shaped circumferential portion is fitted onto the support shaft 26. As shown in FIG. By detecting the rotation of the detected object 66 with a proximity sensor 67, the actual rotation speed of the drum 6 is detected. If the detected actual rotational speed of the drum 6 does not match the predetermined calculated value, the speed change belt device 50 is further operated to control the rotation speed so that the two match. An output 68 of the sensor 67 is connected to the control board 65. In addition, sensor 6
7 is not limited to the one using the above-mentioned proximity switch, but an optical sensor or the like may also be used.

As described above, the operator can obtain a wound package with the desired number of twists simply by inputting the desired number of twists from the input board using the keyboard.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the number of rotations of the drum can be changed independently by simply inputting the desired number of twists from the number of twists input means, quickly, hassle-free, and accurately. This makes it possible to change the number of twists, making it possible to obtain a double-twisting machine that can immediately respond to the aforementioned high-mix, low-volume production.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a double twisting machine and a drive mechanism of the double twisting machine according to the present invention, FIG. 2 is a front view showing a variable speed belt device, and FIG. 3 is a
It is an A-line sectional view. 1...Double twisting machine, 3...Spindle, 4...
Endless belt, 5... Winding package, 6... Drum, 11... Drive pulley, 13... Drive motor, 14... Output shaft.

Claims (1)

[Claims] 1. The output shaft of a single drive motor is connected to a drive pulley of an endless belt that contacts the spindle and applies a rotational force to the spindle, and a rotating shaft of a drum that comes into pressure contact with a take-up package and applies a rotational force to the package. , a continuously variable transmission is interposed between the output shaft of the drive motor and the rotating shaft of the drum, and a twist number input means, and the continuously variable transmission is operated to change the speed in accordance with the input twist number. A twist number setting device in a double twisting machine, comprising a control means.