JP2531594B2 - Spinning machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an auxiliary unit including at least a top roller and a ring rail of a draft device, each of which includes a single drive source including an electric motor, and the rotation of the drive source. A spinning machine whose speeds can be adjusted independently of one another.

[Conventional technology]

In the well-known ring spinning machine (DE-OS 2 911378), the individual drives of the auxiliary units are driven by synchronous or asynchronous motors in the same way as the spindles. The motors that drive each roller and ring rail of the draft device are individually connected to the converter so that the output frequency and output voltage are adjusted independently of each other. Only the clock pulse generator connected to the delivery roller via the gear is effective as the measured value. This generator provides the control frequency to the converter connected to the drive motor of the other auxiliary unit.

[Problems to be Solved by the Invention]

In the case of this conventional spinning machine, the rotation from a single drive system is decelerated, and this rotation is uniformly transmitted to a large number of roving yarn feed rollers and spindles (to which spindle bobbins are attached). Has become. Therefore, during spinning,
It is difficult to control individual subtle changes during winding on each bobbin.

The object of the present invention was developed in order to improve such conventional problems, rotation control of a large number of spindles can be performed independently, and the function as a spinning machine in a production line is originally , To provide an optimal spinning machine as a testing machine for setting a manufacturing machine.

[Means for solving the problem]

According to the present invention, the above object includes one draft device and one ring rail, each driven by a plurality of independent electric motors connected to one converter, at least the draft device and each driven roller, and a ring rail. In a case where a plurality of auxiliary units have one independent drive source formed by a plurality of electric motors and the rotation speeds of all the electric motors can be adjusted by theoretical values, a) auxiliary unit (1,2) , 3,4,9,10,11) each independent drive source (14,16,17,18) is provided with one angle transducer, b) Angle transducer (15,19) is one positioning The processing device (21) is connected to the input means for the measured value, and the device (21) continuously compares the measured value with the corresponding theoretical value and each independent drive source (14, 16, 17, 18) For the above measured value and theoretical value The control value is generated from the comparison of the following: c) The output side of the positioning processing device (21) for the control value for determining the rotational speed of the electric motor for driving the spindle is controlled by the converter (23). Connected to the input side, d) independent drive sources (12,14,16,1) for the spindle (5) and the auxiliary units (1,2,3,4,9,10,11) independent of each other
Theoretical values for 7,18) are incorporated in the positioning processing device (21) as a theoretical value program, e) Each drive source of the roller and ring rail of the draft device, and the support rail supporting the anti-balloon ring. And a lappet rail supporting a snell wire and driving sources of these angular transducers connected to a positioning processing device, and f) having a resolver as an angular transducer.

[Action]

The measured value signal sent from the angle transducer allows accurate synchronization of the individual drive sources, even though it differs from the theoretical value.

Moreover, the measured value even makes it possible to synchronize the rotational angle displacement of the motor output shaft with the unit driven by each motor. This is very advantageous, in particular for controlling the speed of rotation between the start of spinning and the end of spinning.

The theoretical values of the rotational speed and the angular position enable the device to maintain the spinning start program and the spinning end program with very high accuracy when operating at the main spinning spinning speed.

Another practical advantage is that it establishes a situation in which a rotational speed program and / or an angular position program can be commanded to all motors, even a completely independent program can be modified even during operation. Therefore, the operation of the ring rail can be changed, and not only the movement stroke and continuous switch operation but also the temporal behavior of the stroke operation can be grasped.

Furthermore, the rotational speed of the spindle can be changed following the position of the ring rail, in particular between the maximum rotational speed and the minimum rotational speed.

In such a configuration, not only individual drive sources for each roller and ring rail of the draft device, but also individual drive sources for the anti-balloon ring and the carrier rail of the snell wire, as well as the angle transducer, are connected to the positioning processor. As a result, the operation of the auxiliary unit can be defined in synchronization with its own program.

The electric motor of each drive source is an electric commutation motor (electr
ic commuting motor). It is also conceivable to use other electric motors that perform positioning according to angular accuracy.

Further, in this configuration, the resolver having a very high angular resolution has a resolution of about 1000 steps per revolution, and is used as an angular transducer. Other high resolution transducers are also suitable.

In the spinning machine of the present invention, the positioning processing device has at least one output terminal for outputting a converter control signal,
Each spindle connected to a controllable converter has its own drive source. At least one of the spindles is provided with a probe for the rotational speed, and the measured value of the rotational speed detected by this probe is input to the positioning processing device. This positioning processing device can send a converter control signal based on the comparison control of the measured value / theoretical value.

Further, in this configuration, the positioning processing device has a terminal connected to a computer such as a personal computer. The computer can conveniently input the program to the positioning processing apparatus, and the program can be changed even during operation. Despite this, the personal computer does not have to be permanently connected to the positioning processor as long as the positioning processor has a memory for at least one theoretical program.

This program can be started from a set position of the ring rail, and the positioning processing device has an input terminal to which the "ring rail up" and / or "ring rail down" signals are input. Furthermore, it is convenient to input start and stop signals, so that the program can be started manually and the spinning machine can be stopped manually as well.

As described above, the effectiveness of the present invention is obvious in the following points, and will be further clarified in the detailed description given below.

〔Example〕

An embodiment of the spinning machine according to the present invention will be described below in detail with reference to FIG.

As shown in the figure, the spinning machine has a draft device including a delivery roller 1, a bottom apron roller 2, and two rollers 3 and 4, and operates as a pressure roller. A roving is sent by this draft device. The rotation speed increases from the normal roller 4 toward the delivery roller 1. Therefore, the roving yarn is the first preliminary draft between the rollers 3 and 4, the second preliminary draft between the rollers 3 and the bottom apron roller 2, and the bottom apron roller 2 and the delivery roller 1.
It goes along with the main draft between and.

One to four spindles 5 of identical design and spaced from each other are arranged below the draft device along the longitudinal direction from delivery roller 1 to roller 4. The bobbin mounted on each spindle 5 rotates together with each spindle 5. The spinning yarn sent from the delivery roller 1 is wound around the bobbin. Before reaching the bobbin inserted through each ring traveler 8 of the fine spinning ring rail 11 and being wound around this bobbin, first of all, the snell wire 6
Pass through the anti-balloon ring 7. The snell wire 6 is fixed to a lappet rail 9, and the lappet rail 9 is movable in the vertical direction in the figure. The anti-balloon ring 7 is fixed to a support rail 10, and this support rail 10 is also movable in the vertical direction in the figure like the lappet rail. The ring traveler 8 is fixed to a ring rail 11 that moves up and down.

The spindle 5 is rotationally driven by an individual asynchronous motor 12 to which a rotary transducer 13 is connected. The rotary transducer 13 generates a frequency signal in proportion to the rotation speed. Each of the rollers 1 to 4 is driven by an electric commutation motor 14. These electric commutation motors
Each of the 14 has a resolver 15 having a rotation resolution of about 1000 steps per rotation. The drive motors 16, 17 and 18 move the lappet rail 9, the support rail 10 and the ring rail 11 in the vertical direction. In this embodiment, drive motors 16-18 are electric commutation motors. Further, each of the drive motors 16 to 18 is also provided with a resolver 19 and has the same performance as the resolver 15.

The electric commutation motors 14, 16-18 each have an individual amplifier 20.
The position is controlled by the positioning processing device 21. The positioning processing device 21 is a converter 23 connected to the asynchronous motor 12.
Control signal is sent to. Rotating transducer 13
The signals output from the resolvers 15 and 19 are processed by the positioning processing device 21. The positioning processing device 21 includes a micro processing device and a storage device, and includes a memory such as RAM or EPROM. The measured value signal sent from the rotary transducer 13 is compared with the measured value signal sent from the resolvers 15 and 19 corresponding to the theoretical value. The scan rate of the example is about 0.
2 milliseconds. The positioning processing device 21 can detect the deviation values between the actual measurement value and the theoretical value quickly, and erase these deviation values by suitably changing the control signals to the amplifier 20 and the converter 23. Therefore, the electric commutation motor 1
Not only the rotation speed of 4,16-18, but also the rotation angle position of the output shaft can be maintained with high accuracy. Normally, positioning based on angular accuracy is not required, but the regularity of the asynchronous motor 12 is retained.

When this spinning machine is used as a kind of testing machine, the program can be input and changed even during operation. This can be done on a computer such as personal computer 22. Of course, this computer is required to be connected to the positioning processor 21 as the input data is stocked in the positioning processor memory, as long as the information is required to modify the positioning element. It

Usually, the spinning start rotation speed, the main rotation speed, and the spinning end rotation speed are set by the spinning program. The time is set to effect the change of rotation time. The rotation speed program must be set for the rollers 1 to 4 when operating the ring rail 11 as well as the lappet rail 9 and the support rail 10. In addition, the change of the rotation speed of the spindle 5 can be set in relation to the position of the ring rail 11, for example.

Since the spinning program must start from the ring rails that have been positioned,
21 is "Ring rail up" signal and "Ring rail down"
It will have two inputs for the signal. These input signals are detected by the sensors of the switches 24 and 25.
The signal input by the start switch 26 is a positioning processor.
Converted at 21. If the start switch 26 is manually actuated, the ring rail 11 can first be moved to the starting position when necessary. And
All the necessary programs can be started and executed automatically and the spinning machine can be manually deactivated by means of a stop switch 27 which can be activated.

Although a particular illustration and description has been made in this embodiment, many other modifications and combinations are possible in light of the above-described technique, and the claims are included without departing from the spirit of the invention.

〔The invention's effect〕

As explained above, the spinning machine according to the present invention is particularly suitable as a spinning tester for determining various conditions required for producing special woolen yarns such as new woolen yarns.

That is, the measured value signal transmitted from the rotary transducer of the spindle bobbin mounted on the plurality of spindles is
Although different from the theoretical value, it can be accurately synchronized with each drive source. Therefore, the measured value is very convenient because the rotational angle displacement of the motor output shaft can be synchronized with the unit driven by each motor. In particular, it is convenient for control that changes the rotation speed from the start of spinning to the end of spinning. Further, the rotation speed of the spindle can be changed following the position of the ring rail, and in particular, can be changed between the maximum rotation speed and the minimum rotation speed.

The program by the positioning processor can be started from the set position of the ring rail, and it is convenient to input the start signal and the stop signal, so that the program can be started manually and the spinning frame Can also be stopped manually.

[Brief description of drawings]

FIG. 1 shows a schematic diagram of an embodiment of the invention and a tuning circuit. 1 …… Delivery roller 2 …… Bottom apron roller 3,4 …… Roller 5 …… Spindle 6 …… Snell wire 7 …… Anti-balloon ring 8 …… Ring traveler 9 …… Luppet rail 10 …… Support rail 11… … Ring rail 12 …… Electric (asynchronous) motor 13 …… Rotation transducer 14 …… Current commutation motor 16-18 …… Drive motor 15,19 …… Resolver 20 …… Amplifier 21 …… Positioning processor 22 …… Personal computer 23 …… Converter 26 …… Start switch 27 …… Stop switch

Claims (2)

(57) [Claims] 1. A plurality of auxiliary units, each driven by a plurality of independent electric motors connected to one converter, include one draft device and one ring rail, and at least each driven roller of the draft device and a ring rail. In the case where there is one independent drive source formed by a plurality of electric motors and the rotation speeds of all the electric motors can be adjusted by theoretical values, a) auxiliary unit (1,2,3,4, Each independent driving source (14,16,17,18) of 9,10,11) is provided with one angle transducer, b) The angle transducer (15,19) is one positioning processor (21). Connected to the input means for the actual measurement value of the device, the device (21) continuously compares the actual measurement value with the corresponding theoretical value, and performs the actual measurement for each independent drive source (14, 16, 17, 18). Controlled by comparing the theoretical value with the theoretical value C) The output side of the positioning processing device (21) for the control value for determining the rotation speed of the electric motor for driving the spindle is connected to the control input side of the converter (23). D) Spindle (5) and independent drive sources (12,14,16,1) of auxiliary units (1,2,3,4,9,10,11) independent of each other
Theoretical values for 7,18) are incorporated in the positioning processing device (21) as a theoretical value program, e) Each drive source of the roller and ring rail of the draft device, and the support rail supporting the anti-balloon ring. And a lappet rail supporting a snell wire and driving sources of these angle transducers connected to a positioning processing device, and f) having a resolver as an angle transducer. 2. The spinning machine according to claim 1, wherein the electric motor of each drive source is an electric commutation motor.