JPH0364529A - spinning machine - Google Patents

Abstract

PURPOSE:To carry out spinning operation by simple structure under an optimum condition by controlling a spindle drive motor and a front roller drive motor by using a control circuit while comparing the revolving speed of the front roller drive motor with that of the spindle. CONSTITUTION:Revolving speed of a drive motor 3 of a spindle 1 is determined under control of a control circuit 5. Revolving speed of a drive motor 10 of a front roller 8 is determined by comparison with the revolving speed of the spindle. Consequently, since the revolving speed of the front roller 8 accurately follow the revolving speed of the spindle 1, set number of twists, etc., can be secured even with variability of revolving speed of the spindle. Therefore, an induction motor having relatively low cost is usable as a spindle drive motor.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a spinning machine.

(Prior Art) In conventional spinning machines, a main motor rotates a spindle, and a gear train transmits the rotation of the spindle drive shaft to a draft roller system (front roller, draft roller, back roller). The structure was such that the rotation of the spindle drive shaft was transmitted to the ring rail lifting system using a gear train.

(Problems to be Solved by the Invention) However, according to the above conventional examples, it is difficult to determine the optimum spinning conditions, such as spindle rotation speed, front roller rotation speed, draft When setting gear ratios, ring rail lifting speeds, saper feed speeds, etc., it takes time to adjust gear ratios, etc. It takes time to change the product in progress, and since the combinations of gear ratios are limited, it is necessary to rotate and drive the optimal gear ratio. The present invention includes a front roller drive motor, a saper feed motor that feeds the ring rail with a saper, and a rail lifting motor that moves the ring rail up and down, and these motors are configured to be variable in speed by a frequency conversion means, and the frequency conversion means of these motors is controlled. Under the control of the circuit,
The rotation speed of the front roller drive motor is determined by comparison with the spindle rotation speed, and the rotation speed of the back roller drive motor, the saper feed motor, and the rail lifting motor is determined by comparison with the front roller rotation speed. .

(Function) According to the present invention, the rotation speed of the spindle drive motor is determined under the control of the control circuit, and the rotation speed of the front roller drive motor is determined under the control of the control circuit by comparison with the spindle rotation speed. It will be done. Therefore, since the rotational speed of the front roller accurately follows the rotational speed of the spindle, there is a problem in that even if the rotational setting value of the spindle cannot be obtained.

In order to deal with such problems, Japanese Patent Application Laid-Open No. 6219982
In Publication No. 1 and the like, it is proposed that each roller of the draft roller system is provided with an independent drive motor. Also, Tokukai Sho 6
Publication No. 2-206034 and the like propose disposing a drive motor separate from the spindle drive system in the ring rail lifting system.

However, all of these conventional examples only propose partially arranging a drive motor separate from the spindle drive motor in the draft roller system or ring rail lifting system, and do not refer to the spinning machine as a whole. do not have.

It is an object of the present invention to solve the above-mentioned problems and to simplify the structure of a spinning frame as much as possible and to achieve a low-cost structure.

(Means for Solving the Problems) In order to achieve the above object, the spinning machine of the present invention has a spindle drive motor that rotationally drives the spindle, a back roller drive motor that rotationally drives the back roller and the middle roller, and a front roller whose speed varies. Even if the number of twists is set, it is possible to maintain the set number of twists. Therefore, it is possible to use a relatively low-cost induction motor as the spindle drive motor.

Further, according to the present invention, the back roller and the idle roller are mechanically connected to have a constant rotation ratio, and by rotating them with a back roller drive motor,
The number of drive motors is 1 compared to the one described in Publication No. 99821.
By reducing the number of parts, we aim to simplify the structure and lower costs. The above structure was made possible from the viewpoint that there would be no problem in practical use as long as the rotational speed ratio between the back roller and the front roller was set accurately in the draft ratio. The rotation speed of the back roller drive motor is determined by comparison with the front roller rotation speed under the control of the control circuit. Therefore, the rotational speed of the back roller (and by extension, the middle roller) accurately follows the rotational speed of the front roller, so that the draft ratio etc. set in the control circuit can be maintained.

Further, according to the present invention, the rotation speed of the saper feed motor is determined by comparison with the Freon I-roller rotation speed under the control of the control circuit. It is possible to ideally feed the ring rail by following the rotational speed of the front roller.

Furthermore, according to the present invention, the rotation speed of the rail lifting motor is determined by comparison with the front roller rotation speed under the control of the control circuit, so data such as the count, twist, spindle rotation speed, etc. can be set in the control circuit. This makes it possible to ideally move the ring rail up and down in accordance with the front roller rotation speed.

When changing products in progress, gear ratio adjustment for setting the rotational speed ratio between the spindle and front roller,
The gear ratio adjustment work for setting the rotational speed ratio between each roller of the draft roller system, the gear ratio adjustment work for setting the saper feed speed, and the rotational speed of the ring tray controller 8 is determined by a front roller rotation detector installed via a gear pair 13. 14.

An induction motor is used as the spindle drive motor, and its rotational speed is adjusted by a frequency converter 3a. Then, the rotation speed (
A signal from the control circuit 5 is transmitted to the frequency converter 3a so that the spindle drive motor 3 rotates based on the frequency converter 3a (see FIG. 4).
It has a bow that looks like it's being entered.

Napo motors are used as the back roller drive motor 9 and the front roller drive motor 10, and their rotational speeds are determined by frequency setting devices 9a and 10a attached to each.
adjusted by. The frequency setter lOa for the front roller drive motor 10 includes a ratio setter 35 and a motor drive control device 36, as shown in FIG. Along with the speed data being input, setting data indicating a predetermined ratio from the control circuit 5 is also input.

This eliminates the need for complicated work such as adjusting the gear ratio for setting the elevator speed, and allows the above-mentioned changing work to be performed simply by setting the necessary data in the control circuit.

(Example) In the spinning machine which is an example of the present invention shown in FIG.
The rotation of the spindle 1 is performed by a tanzenschahert 2, and the tanzenschahert 2 is driven by a spindle drive motor 3. The rotational speed of the spindle 1 is detected by a spindle rotation detector 4.

A draft roller system consisting of a back roller 6, a middle roller 7, and a front roller 8 has a back roller drive motor 9 and a front roller drive motor 10 as driving sources for these rollers. The rotation of the back roller drive motor 9 is transmitted to the back roller 6 through a gear pair 11 to drive it to rotate, and is also transmitted to the middle roller 7 through a speed increasing gear pair 12 to drive it to rotate.

The rotation of the front roller drive motor 10 is transmitted to the front roller 8 to rotate it. Based on these data, the frequency setter 10a controls the rotation of the front roller drive motor 10 so that the rotational speed of the front roller 8 is always at a set ratio to the rotational speed of the spindle 1.

The ratio of the rotational speeds of the back roller 6 and the middle roller 7 is fixedly determined by the ratio of the number of teeth of the speed increasing gear pair 12. Similarly to the frequency setting device 10a, the frequency setting device 9a for the back roller "A mJ + motor 9 is equipped with a ratio setting device and a motor drive control device, and receives the front roller rotation speed data from the front roller rotation detector 14. At the same time, setting data indicating a predetermined ratio is input manually from the control circuit 5.Based on these data, the frequency setter 9a ensures that the rotation speed of the back roller 6 is always at the set ratio to the rotation speed of the front roller 8. The rotation of the back roller drive motor 9 is controlled so that.

As a result, the spindle 1 rotates at a predetermined rotational speed based on the data indicating the spindle rotational speed set in the control circuit 5, and the spindle 1 rotates at a predetermined rotational speed based on the data indicating the speed ratio of the spindle 1 and the front roller 8 set in the control circuit 5. Based on the data indicating the speed ratio of the front roller 8 and the back roller 6 set in the control circuit 5, the front roller 8 follows the spindle 1 and rotates at a set ratio, and the back roller 6 and the middle roller 7 rotate at the front speed. It rotates at a set ratio following the roller 8 to obtain a desired draft ratio.

A cam-type lifting device is used as the lifting device for the ring rail 15. Ring rail 15 is lifting tape 1
6 and rises, and when this loosens, it descends under its own weight. One end of the lifting tape 16 is wound and fixed around a lifting drum 17 of a separator feeding mechanism, and as the lifting drum 17 rotates clockwise in FIG. 1 and winds up the lifting tape 16, the ring rail 15 gradually rises. ing.

Further, the lifting tape 16 controls the rotation of the lower 1 saver feed morph 22 of the guide roller 19 of the lifting lever 18 at a midway point.

A servo motor is used as the heart cam drive motor (rail elevating morph) 23 that rotationally drives the heart cam 21, and its rotational speed is adjusted by a frequency setter 23a. Like the frequency setter 9a for the back roller drive motor 9, this frequency setter 23a also includes a ratio setter and a motor drive control device, and receives front roller rotation speed data from the front roller rotation detector 14, and Setting data indicating a predetermined ratio is input from the control circuit 5. Based on these data bi, frequency setter 23
a controls the rotation of the heart cam drive motor 23 so that the lifting speed of the ring rail 15 is at a set ratio to the rotational speed of the front roller 8;

As a result, the saper feed speed and lifting speed of the ring rail 15 are determined based on the relationship with the rotational speed of the front roller 8 based on various data set in the control circuit.

In FIG. 1, reference numeral 24 is attached to the ring rail position detection side. This lifting lever 18 is supported at its base end by a pivot 20 so as to be able to swing up and down. This is done by the rotation of the heart cam 21 that is in pressure contact with the lifting lever 18, and the lifting lever 18 performs one cycle of vertical movement while the heart cam 21 rotates once.Accompanying this, the ring rail 15 performs a vertical movement of one chase length.

A servo motor is used as the saper feed morph 22 that rotationally drives the lifting drum 17, and its rotational speed is adjusted by a frequency setter 22a. Like the frequency setter 9a for the bank roller drive motor 9, this frequency setter 22a also includes a ratio setter and a motor drive control device, and receives front roller rotation speed data from the front roller rotation detector 14 and Setting data indicating a predetermined ratio is input from the control circuit 5.

Based on these data, the frequency setter 22a detects the taper feeding device of the ring rail 15 so that the taper feeding speed is a set ratio to the rotational speed of the front roller 8, and detects the taper feeding device of the ring rail 15. The data is sent to the control circuit 5. Reference numeral 25 denotes a timing switch group for detecting the rotational position of the heart cam 21, and as shown in FIG. It is provided with a snall prevention operation switch 25e1 and a chess speed change switch 25f. heart cam 21
When the rotation position is reached, the corresponding switch is turned on and the signal is sent to the control circuit 5.

FIG. 4 shows the spindle rotational speed and the height position of the ring rail 15 in relation to the time axis t.

The spindle rotational speed basically changes as shown in FIG. 4 based on the data set in the control circuit 5 and the signal from the ring rail position detector 24.

FIG. 5 shows the timing when a full tube is stopped. When the ring rail position detector 24 issues a signal indicating that the tube is full, the spindle rotational speed shifts to the winding end speed based on this signal. Thereafter, the spindle motor disconnection switch 25a is turned ON, and then the lifting lever fixing switch 25d is turned ON, so that the stopper 26 shown in FIG. 1 is actuated, and the lifting lever 18
is fixed, thereby preventing the ring rail 15 from falling. Next, when the top punch operation switch 25c is turned on, the hunting motor 27 shown in FIG. 1 is driven to raise the ring rail 15 to the punch bunch position. After that, the spindle motor disconnect switch 25a is turned to O.
When shifting to FF, the spindle drive motor 3 is turned OFF.
F and the spindle rotational speed is reduced. After a predetermined time has elapsed since the timer of the control circuit 5 operates and the spindle motor cutoff switch 25a is turned off, a brake is applied to the spindle drive motor 3 and the spindle 1 is stopped after a short time.

FIG. 6 shows the timing at manual stop. When the manual strike button (not shown) is pressed, the chess speed change switch 25f is turned ON.

During this time, the spindle drive motor 3 is controlled to keep the spindle rotation speed low.

(Effects of the Invention) According to the present invention, data such as the spindle rotation speed, front roller rotation speed, draft ratio, ring rail lifting speed, and saper feed speed can be sent to the control circuit without the need for adjusting gear ratios. It is possible to provide a spinning machine that can easily change settings, perform spinning operations under optimal conditions, has a relatively simple structure, and is relatively inexpensive.

[Brief explanation of drawings]

The drawings show an embodiment of the spinning machine of the present invention, and Fig. 1 is a principle diagram showing the whole, Fig. 2 is a block diagram of the frequency setting device, Fig. 3 is a principle diagram of the Suinochi group, and Fig. 4 is a diagram showing the principle of the spinning machine. A timing diagram showing the relationship between the spindle rotation speed and the ring rail height position. Figure 5 is a timing diagram when the tube is fully stopped. Figure 6 is a timing diagram showing the relationship between the spindle rotation speed and the ring rail height position. Figure 6 is a timing diagram when the spindle rotation speed is reduced to a low speed based on the manual stop signal. Transition. After that, the appropriate position stop switch 25b
When is turned ON, the spindle drive motor 3 is turned OFF and the spindle rotational speed is decelerated. At the same time, the timer is activated and a brake is applied to the spindle drive motor 3 after a predetermined period of time has elapsed. After that, the spindle 1 stops for a short time, but the spindle 1 is decelerated Φ and the ring rail 1
5 is lowered, the anti-snall operation switch 25e
is turned ON, and after a predetermined period of time (set by a timer), the snar fat fixing device 28 (not shown in FIG. 1) is activated, and the lowering speed of the ring rail 15 is increased to prevent the snarl. The snal prevention operation Suinochi 25e is ON even when restarting.
By doing this, we are trying to prevent snaling. FIG. 7 shows the timing of speed change between chess. The spindle rotational speed is basically set as shown in Figure 4, but if you look in detail, it is set to change between speeds during high speed rotation (normal rotation) as shown in Figure 7. ing. 6. Timing diagram when the movement is stopped. FIG. 7 is a timing diagram of the speed change between chess. 1------------ Spindle 3-------11--------- Spindle drive motor 38~-1---------------------- ------
--Frequency converter (frequency conversion means) 5-----1--
−−−−−−−Control circuit 6−−−−−−−−−−−−−
−−−−−−− Back roller 7 −−−−−−−−−−
- Kuredol roller 8----------1------
−−Front roller 9−−−−−−1−=−−−−−−
Back roller drive motor 9a----------------------
----- Frequency setter (frequency conversion means) 10---
--------------Front roller drive motor 10
a------------------1 Frequency setter (frequency conversion means) 15--------------Ring rail 21-- -------------Heart cam 22-------------------------Saper feed motor 22a--------
Frequency conversion means) 23
Heart cam drive motor (rail lifting motor) 23a --- Frequency setter (frequency conversion means) 25a 25b 25c ... 5d 5e 5f --- Spindle motor disconnect switch - Appropriate position stop switch Top punch operation switch Lifting lever fixed switch Snarl prevention operation switch Chess conversion switch

Claims (3)

[Claims] (1) A spindle drive motor that rotationally drives the spindle, a back roller drive motor that rotationally drives the back roller and middle roller, a front roller drive motor that rotationally drives the front roller, a taper feed motor that taper feeds the ring rail, and a ring rail. The front roller drive motor is provided with a rail lifting motor that moves the front roller up and down, and these motors are configured so that their speed can be changed by frequency conversion means, and the frequency conversion means of these motors is placed under the control of a control circuit, and the rotation speed of the front roller drive motor is controlled by the spindle rotation. A spinning machine characterized in that the rotational speeds of a back roller drive motor, a saper feed motor, and a rail lifting motor are determined by comparison with a front roller rotational speed. (2) The spindle drive motor is composed of an induction motor,
Back roller drive motor, front roller drive motor,
2. The spinning machine according to claim 1, wherein the saper feed motor and the rail lifting motor are comprised of servo motors. (3) The rail lifting motor consists of a heart cam drive motor, a spindle motor disconnect switch that detects the rotational position of the heart cam and disconnects the spindle drive motor, and a spindle motor disconnect switch that detects the rotational position of the heart cam and moves the ring rail to the appropriate position when manually stopped. A stop switch at the appropriate position to stop the heart cam, a top bunch operation switch that detects the rotational position of the heart cam and performs top bunch operation, a lifting lever fixing switch that detects the rotational position of the heart cam and prevents the ring rail from lowering, and a lifting lever fixing switch that detects the rotational position of the heart cam and prevents the ring rail from lowering. 3. The spinning machine according to claim 1, further comprising a snall prevention operation switch that detects the rotational position of the heart cam and performs the snal prevention operation, and an inter-chest speed change switch that detects the rotational position of the heart cam and changes the spindle rotational speed between checkers.