JPH0244924B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for winding yarn in a muille spinning machine for spinning woolen yarn.

(Prior Art) A conventional spindle build mechanism for forming a spindle by winding the spun yarn around a taper tube while the spindle carriage is moving inward is a spindle carriage supporting a spindle 106, as shown in FIGS. 11 and 12. Cordland arm 102 that follows and tilts at a slower speed than Retsuji 101, and Cordland arm 1
Connecting nut 103 screwed onto threaded rod 102a of No. 02, and this connecting nut 103
The connecting nut 103 is connected to the cord land arm 1 at the start of spinning.
The connecting nut 103 is placed near the lower end of the spindle 106 so that the rotational speed of the spindle 106 changes little during one lift and the number of rotations increases, and as the spindle build progresses, the connecting nut 103 is gradually increased. The tension guide of the winding guide is used to screw the cordland arm 102 toward the tip of the cordland arm 102, and the spindle is set so that the number of rotations gradually decreases, and the spun yarn is wound into a tube to form a cot in a predetermined shape. was forming.

(Problems to be Solved by the Invention) In the case of the above-mentioned spindle build mechanism, the mechanism is complicated, and a deviation occurs between the rotational speed of the spindle 106 and the running position of the spindle carriage 101, causing fluctuations in the winding tension of the spinning yarn. However, as the traveling distance of the spindle carriage 101 increases, this tendency becomes more noticeable, and problems arise in that uneven spinning counts and uneven spinning occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for winding yarn in a mill spinning machine, which solves the above-mentioned problems and allows the spin build operation to be performed accurately.

(Means for Solving the Problems) The present invention uses the output rotational speed of a transmission which is rotatably driven by a control motor capable of variable speed control and whose transmission ratio can be changed to detect the traveling position of a spindle carriage. Based on the output signal of the provided displacement detector, the speed change is controlled during the inner movement of the spindle carriage.
The spindle rotational speed during lift is controlled so that the feeding speed and winding speed of the spinning yarn are synchronized, and the gear ratio of the transmission is controlled so that the winding tension of the spinning yarn changes during the inward movement of the spindle carriage. The gist of this invention is a spinning winding method in which the integrated spindle rotation speed during one lift during the formation of a tip end is gradually decreased as the tip build progresses.

(Function) The present invention changes the output rotational speed of a transmission rotationally driven by a control motor based on the output signal of a displacement detector that detects the running position of the spindle carriage during the inner movement of the spindle carriage. Then, the spindle rotational speed during one lift is controlled to synchronize the spinning supply speed and the winding speed, and the gear ratio of the transmission is changed as the spinning tip build progresses during the spinning tip formation. It is configured to gradually reduce the cumulative spindle rotational speed during lift and to keep the spinning winding tension constant to form a cot.

(Example) Next, an example of the present invention will be described with reference to the drawings.

First, the drive mechanism for controlling the spindle carriage in the Muille spinning machine will be explained with reference to FIGS. 3 to 5.

Front frame 1 and rear frame 3 of Muille spinning machine
A stay beam 3 is horizontally suspended between the front frame 1 and the front frame 1, and a Shino delivery roller 16 is rotatably supported on the front frame 1.

An oblong spindle carriage 13 is mounted on a rail 17 laid on the floor between the front frame 1 and the rear frame 3 so as to be horizontally movable in the front and rear direction via front and rear wheels 18. A plurality of spindles 15 arranged in order to twist and wind up the spun yarn sent out from the spindle delivery roller 16 are rotatably supported in an inclined manner on the spindle carriage 13, respectively.

The drive motor 4 installed on the floor near the front frame 1 is a DC servo motor, a print motor, etc. that can be controlled in speed by electronic control means such as DC control or inverter control. A pair of motor wheels 5, 5 are attached to the output shaft 4a.
is fitted.

A pair of double-row front chain wheels 7, 7, each rotatably supported by a pair of brackets 6, are disposed slightly behind both motor wheels 5 and near the inward end of the spindle carriage 13. An endless chain 9 is hung between the wheel 7a on one side of both front chain wheels 7 and the motor wheel 5, respectively.

The rotation of the control motor 4 is controlled by the spindle carriage 1.
A pair of endless transmission chains 10, 10 arranged in parallel to transmit power to both front chain wheels 7
and a pair of wheels rotatably supported via brackets 19, 19, respectively, disposed near the outward end of the spindle carriage 13, and having the same number of teeth as the front chain wheel 7. The chain wheels 8 and 8 are respectively rotatable and tensionedly hung on the rear chain wheels 8, 8. The length of both transmission chains 10 is the length between the rotation centers a of the front and rear chain wheels 7 and 8, that is, the length of the straight section 10a of the transmission chain 10 is defined as A, and the pitch of the front and rear chain wheels 7 and 8 is defined as A. The radius is set so that A+2B=L, where B is the radius of the curved sections 10b, 10b of the transmission chain 10, and L is the traveling distance of the spindle carriage 13.

A vertically elongated block guide 14 is attached to the front end of the spindle carriage 13, and a vertically formed guide groove 14a, which is open on both front sides, is passed through the block guide 14.

A rectangular parallelepiped-shaped slide block 12 fitted vertically slidably into the guide groove 14a of the block guide 14 decelerates the block guide 14 together with the spindle carriage 13 at the inward end and travels back, and at the outward end. It is movable in the vertical direction relative to the lock guide 14 in order to decelerate and stop the spindle carriage 13, but is held in such a way that it cannot be displaced in the running direction of the spindle carriage 13.

The cylindrical bush 11 is a slide block 12
A part of both transmission chains 10 is connected to this bush 11 so as to be freely rotatable in the center of the bush 11, and a part of both transmission chains 10 is interlocked with a slide block 12 to link both transmission chains 10 and a spindle carriage 13. Therefore, a pair of connecting pins 20, 20 are inserted in a parallel and horizontal manner, and the vicinity of both ends of both connecting pins 20 are respectively extended laterally to connect to both adjacent joints of both transmission chains 10, respectively. The transmission chains 10 are partially inserted into the slide block 12 and fixed to the slide block 12.

Then, when the driving motor 4 is rotationally driven to circulate both transmission chains 10, the slide block 12 moves together with the transmission chain 10, and in the linear portion 10a of the transmission chain 10, both connecting pins 2
0 are parallel in the front and back, and the slide block 12 moves to the vicinity of the upper end or the lower end of the guide groove 14a of the block guide 14, moves straight along with the block guide 14, and the spindle carriage 13 moves at the circulation speed of the transmission chain 10. Run with
Furthermore, the slide block 12 is connected to the transmission chain 10.
In the forward and straight forward moving portion 10b, the block guide 14 moves in a curved manner while sliding vertically within the guide groove 14a, and the block guide 14 decelerates in a sine curve shape and interlocks, and the spindle carriage 13 moves at the inward moving end. In the front and back, the vehicle decelerates in a sine curve shape, turns around, and stops after decelerating at the outer end.

Therefore, the spindle carriage 13 can automatically travel in the order of outward movement → deceleration at the outer end and then stop → inward movement → deceleration at the inner end and then turning back.

In addition, the driving motor 4 is connected to the spindle carriage 1.
The speed change is controlled over the entire travel distance or locally so that the vehicle 3 travels at an appropriate speed during inward and outward travel.

Next, a spinning winding mechanism for winding the spinning yarn onto the spindle when the spindle carriage 13 moves inward will be described.

A transmission 21 mounted on the rear frame 2 is rotationally driven by a control motor 22 such as a DC servo motor or a print motor that can be controlled in speed by electronic control means such as DC control or inverter control.
This transmission 21 is attached with a pilot motor 21a for switching its gear ratio in response to a switching signal.

The reducer 23 installed below the transmission 21 has a pulley 24 fitted to the input shaft of the reducer 23.
and a pulley 25 fitted to the output shaft of the transmission 21.
It is rotatably driven via a belt 26 that is hung on.

The endless chain 27 includes a drive chain wheel 28 fitted on the output shaft of the reducer 23, a guide chain wheel 29 rotatably supported above the reducer 23, and a rotatable shaft mounted on the spindle carriage 13. A movable chain wheel 30 is supported, a movable guide chain wheel 31 is rotatably supported on the spindle carriage 13, and a guide chain wheel 32 is rotatably supported on the front frame 1. During the inward movement of the carriage 13 and winding up of the spinning yarn, it is driven to circulate at the rotational speed of the drive chain wheel 28, and the spindle carriage 13
Stop while moving out. The rotation of the movable chain wheel 30 is transmitted to the gears 33, 34, and the clutch 56, gear box 35, pulley 36, which is engaged when moving inward and disengaged when moving outward.
37, 38 and a belt 39 to the spindle 15.

The movable chain wheel 30 moves the spindle carriage 1 during the inner movement of the spindle carriage 13.
The rotation speed of the chain 27 is differentially driven at a rotational speed corresponding to the difference between the inward movement speed of the gearbox 21 in the P direction and the circulation speed of the chain 27, and the rotation of the transmission 21 is stopped and the chain 2
When the circulation of the motor 7 is stopped, the spindle carriage 13 rotates at the inward speed, and the spindle rotational speed reaches its maximum, and as the output rotational speed of the control motor 22 and transmission 21 increases, the spindle rotational speed gradually decreases. However, when the inward movement speed of the spindle carriage 13 and the circulation speed of the chain 27 match, the spindle rotation speed becomes 0, and the spindle 15 adjusts the spinning supply speed and winding while the spindle carriage 13 moves inward. The speed change is controlled so that the taking speed is synchronized over the entire area of the tip build. Further, the movable chain wheel 30 is reversed when the drive chain wheel 28 stops rotating during the outward movement of the spindle carriage 13, but since the clutch 56 is disengaged at the inward movement end, the movable chain wheel 30 is connected to the spindle 15. The rotation from the twisting drive side is transmitted, but the rotation from the twisting drive side is transmitted.

A counter guide 40 for imparting tension to the spinning yarn and a movable guide 41 for winding the yarn are arranged in parallel facing the spindle 15, and the movable guide 41 is connected to a spinning rail (not shown) when the spindle carriage 13 moves inwards. While the counter guide 40 is moved up and down within a predetermined range by the spinner, the counter guide 40 is displaced up and down in accordance with fluctuations in the spinning winding tension.

The proximity switch 52 detects the downward movement of the counter guide 40 and controls the pilot motor 2 of the transmission 21.
1a, the pilot motor 21a is installed opposite the counter guide 40, and when the winding tension for spinning becomes strong and the counter guide 40 moves downward, the proximity switch 52 is turned ON and the pilot motor 21a is driven to rotate.

A pinion 42 rotatably supported at the lower part of the spindle carriage 13 via a pinion shaft 43 is meshed with a rack gear 44 laid along the running direction of the spindle carriage 13 on the floor surface. 45 is hung between a chain wheel 46 fitted to the pinion shaft 43 and a chain wheel 48 fitted to the input shaft of a gearbox 47 installed on the spindle carriage 13, so that the rotation of the pinion 42 is controlled by the gearbox. Further, the output rotation of the gearbox 47 is transmitted to a displacement detector 50 installed on the spindle carriage 13 in order to detect the running position of the spindle carriage 13 during inward travel.

Next, a method of controlling the speed change of the spindle 15 will be explained. The displacement detector 50 detects the traveling position of the spindle carriage 13 during inward movement based on the rotation angle of the input shaft of the displacement detector 50, and has a sine curve characteristic. Converts it to a voltage value and sends an output signal. The output signal transmitted from the displacement detector 50 is transmitted to the detection amplifier 51 and processed by the detection amplifier 51, and the signal transmitted by the detection amplifier 51 is input to the speed controller (inverter etc.) 55, which further controls the speed. The control motor 22 is controlled by the output signal of the device 55.
is shifted to control the output rotation speed of the transmission 21, and the spindle 15 is controlled by the spindle carriage 13.
In the inner process, speed change control is performed so that the spinning winding speed due to spindle rotation during one lift during spinning winding is synchronized with the spinning supply speed.

Further, at the start of winding, that is, at the time of forming a tip tail, as the spinning tip build progresses, the winding tension of the spinning yarn into the tube changes and the counter guide 40 is displaced downward, causing the contact point of the proximity switch 52 to change. Turn on this proximity switch 5
2, a timer (not shown) connected to rotate the pilot motor 21a of the transmission 21 operates, and the pilot motor 21a of the transmission 21 rotates.
is rotationally driven for a time set by the timer, the gear ratio of the transmission 21 is changed, and the cumulative spindle rotation speed and the rate of change of the spindle rotation speed during the formation of the tip tip change as the tip build progresses.

As shown in FIG. 10, the running position L of the spindle 15 when the spindle 15 moves inward during the formation of the tip butt,
In the characteristic curve showing the relationship with the cumulative spindle rotation speed S within one lift during the buttock formation, the slope of the characteristic curve T1 at the start of the buttock formation is the maximum,
The slope of the characteristic curve T2 at the time of completion of buttocks formation is the minimum, and the cumulative spindle rotation speed S is maximum at the start of buttock formation, gradually decreases as the buttock formation is completed, and becomes the minimum at the completion of buttocks formation. Then, the output rotational speed of the transmission 2 is controlled by the pilot motor 21a. Further, the output rotation speed of the control motor 22 is controlled in a variable speed based on the output signal of the displacement detector 50 so that the spindle rotation speed between each lift during the formation of the tip butt is gradually increased as the tip build progresses during one lift. , a tip end 54a shown in FIG. 9C is formed, and after the formation of the tip end 54a, the spun yarn is sequentially wound around the tube 53 to form a tip 54. However, after the butt formation, the speed of the spindle 15 is controlled under substantially the same rotational conditions as when the butt formation is completed.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, the control motor 22 which can be controlled to change speed
Transmission 2 which is rotatably driven by
A displacement detector 50 provided to detect the output rotation speed of 1 and the running position of the spindle carriage 13
Based on the output signal of The gear ratio of 21 is changed based on the change in the winding tension of the spinning yarn during the inward movement of the spindle carriage 13, and the cumulative spindle rotational speed during one lift during the formation of a tip end is gradually decreased as the tip end progresses. It is configured to do so.

For this reason, the winding tension on the spinning tube is constantly equalized to suppress fluctuations in the winding tension, reduce yarn unevenness caused by fluctuations in the winding tension, and improve yarn quality. By accurately changing the cumulative spindle rotational speed during forming as the coppice build progresses, the winding tension of the spinning yarn can be optimized over the entire area during the coppice butt formation, and the winding shape of the coppice butt can be balanced and optimized. , it is possible to build a spun on a long-stretch mill spinning machine, and even on a long-stretch mill spinning machine, the quality of the spun yarn can be improved and the spun can be formed accurately.

(Effects of the Invention) That is, the present invention is capable of changing the output rotational speed of a transmission which is rotatably driven by a control motor capable of speed change control and whose transmission ratio can be changed by adjusting the displacement provided for detecting the running position of the spindle carriage. Based on the output signal of the detector, the speed is controlled in the inward movement of the spindle carriage, and the spindle rotational speed during one lift is controlled so that the spinning supply speed and winding speed are synchronized. The gear ratio of the transmission is changed based on the change in the winding tension of the spinning yarn during the inward movement of the spindle carriage.
By gradually decreasing the cumulative spindle rotation speed during lift as the spindle build progresses, it is possible to equalize the winding tension for spinning, improve yarn quality, and even the winding shape of the spindle. It has the effect of making it possible to build a spinning machine.

[Brief explanation of drawings]

Figures 1 to 9 show an embodiment of the present invention, with Figure 1 being a side view of the main parts, Figure 2 being a plan view, and Figure 3 showing the drive mechanism of the spindle carriage. 4 is a plan view, FIG. 5 is a side view of the main parts, FIG. 6 is a side view showing a mechanism for detecting the running position of the spindle carriage, and FIG. 7 is a plan view, and FIG. Figure 8 is a wiring diagram of the control circuit of the transmission, Figures 9A, B, C, and D are front views showing the process of forming a tip in order, and Figure 10 shows the running position of the spindle carriage during the formation of a tip butt. FIG. 11 is a side view of a conventional spindle drive mechanism, and FIG. 12 is a plan view thereof. 13...Spindle carriage, 15...Spindle, 21...Transmission, 22...Control motor,
50...Displacement detector.

Claims (1)

[Claims] 1 The output rotation speed of a transmission which is rotatably driven by a control motor capable of variable speed control and whose transmission ratio can be changed is determined based on the output signal of a displacement detector provided to detect the running position of the spindle carriage. The speed is controlled during the inward movement of the carriage, and the spindle rotational speed during one lift is controlled so that the spinning supply speed and winding speed are synchronized, and
The gear ratio of the transmission is changed based on the change in the winding tension of the spinning yarn during the inward movement of the spindle carriage, and the cumulative spindle rotational speed during one lift during the formation of the tip end is adjusted as the step build progresses. A method for winding yarn in a Muille spinning machine, which is characterized by gradual reduction.