JPH0240580B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a winding speed control system in an automatic winder.

[Conventional technology]

The spinning bobbin produced by a spinning machine, especially a ring spinning machine, is fed to the next process, an automatic winder, where it is rewound and removes yarn defects contained in the yarn.
The yarn is rewound into a package with a predetermined amount and shape.

That is, in an automatic winder in which a plurality of winding units are arranged side by side, yarn is pulled out from a spinning bobbin that is supplied to a predetermined position of each winding unit by various supply means, and the yarn is passed through a tensioning device, a slab catcher, etc. After that, it is wound onto a package that is rotated by a traversing drum.

[Problem that the invention seeks to solve]

In such an automatic winder, the traverse drum provided in each winding unit is driven by a separate motor for each unit, and a speed change mechanism consisting of a step pulley and a belt is provided between the motor and the drum.
The rotation speed of the drum is set by changing the winding position of the belt and pulley. Therefore, in an automatic winder with a large number of winding units arranged side by side, when setting a new yarn speed due to a change in yarn type, the operator must adjust the speed change mechanism of each winding unit. In a system for producing small quantities of different types, when yarn lots are changed frequently, the above-mentioned work is extremely troublesome and requires a long working time, which also reduces the operating efficiency of the winder.

The present invention aims to solve the above problems.

[Means for solving problems]

The present invention provides an automatic winder in which a plurality of winding units are installed in parallel, in which a central controller for setting winding speed conditions and an inverter for driving a drum motor provided in each winding unit are connected via a bus line, and each winding unit is In the unit, the above-mentioned inverter is connected to a unit controller that controls drum operation independently in the unit, and sets the basic speed of all winding units at once, and also sets each unit to the rotational speed most suitable for the winding situation. The motor is controlled by a unit controller.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an example of a winding unit U constituting an automatic winder. The yarn 2 released and pulled out from the spinning bobbin 1 passes through a balloon breaker 3 and a tension device 4, and is checked for yarn defects by a yarn defect detection head 6 such as a slab catcher, and wound onto a rotating package 8 by a traversing drum 7. taken.

During winding, the fluctuation in the thickness of the yarn passing through the slab catcher 6 is input to the unit controller 11i as an electric signal 9, and is compared with a reference value, and if it exceeds the allowable range, a yarn defect has passed. Immediately, the controller 11 outputs a command signal 10 to the cutter drive device 5, and the cutter is operated to forcibly cut the yarn. Due to the thread cutting, the slab catcher 6
The yarn running signal issued from the controller 11 is turned off, yarn breakage is sensed, and a command to stop the traversing drum drive motor 12 is issued from the controller 11, and the rotation of the drum 7 is stopped.

Reference numeral 13 in FIG. 2 is a pulse generator for detecting the rotation of the drum 7. For example, it consists of a magnetic piece fixed to one place on the end face of the drum and a proximity sensor. The pulse signal 14 is input to a fixed length mechanism that calculates the length, and is stored and processed. The pulse signal is also used to calculate the yarn speed during winding.

Furthermore, in the present invention, a drum drive motor 12 is provided for each winding unit, and the rotational speed of the motor 12 is controlled by an inverter 24 provided in each winding unit. That is, in each winding unit, a signal line 25 is connected between the unit controller 11 and an inverter 24 in order to control the motor to the most suitable rotational speed based on the winding situation of each unit. The rotational speed of the drum motor 7 is then set via the inverter 24.

Further, in FIG. 1, the inverters 24a to 24n of each unit are connected to the central controller 15 by a bus line 23, so that the basic speed of all the winding units can be set at once.

That is, when the conditions are set using the keyboard setting device 16 for setting the winding speed conditions and the display 17 such as an LCD that displays the items and setting values necessary for the setting, these setting values are calculated by the central processing unit. A constant DC voltage 21 and another D/A converter 20 are processed by the device 18 and sent through a D/A converter 19.
A triangular wave voltage 22 for disturb signals is outputted through the bus line 23, and each voltage is supplied to inverters 24a to 24n provided in each of the winding units UI to UN. The voltage 21 from the central controller 15 is supplied to the inverter 24a~
24n, and the other voltage 22 is used as a disturb signal that swings the output frequency into a triangular waveform. The disturb signal is used to accelerate or decelerate the rotational speed of the drum 7 and prevent ribbon winding of the yarn wound around the package, and is used to prevent the yarn from being wound into a ribbon by the drum motors 12a to 1.
This is to change the output frequency of the inverter for accelerating and decelerating the rotational speed of 2n.

Inverters 24a to 24 of each of the above winding units
n is connected to the unit controllers 11a to 11n provided in each winding unit, and the unit controllers 11a to 11n determine whether or not to stop or disturb the operation of the winding unit alone as necessary.
1n controls it.

That is, in each winding unit, thread breakage, bobbin feeding, doffing due to full winding, etc. occur randomly, and therefore the temporary stop of operation is controlled for each unit to reach the package diameter at which ribbon winding occurs. The time for disturb is also random, and whether disturb is necessary or not is controlled for each unit.

In addition, in FIG. 1, if one automatic winder is composed of many winding units,
Divide the take-up unit into multiple unit spans,
It is also possible to set conditions for each span. That is, the D/A converters 19 and 20 are used for one span, and the other D/A converters 19m and 20m are used for other spans, and different conditions can be set for each span. For example, if a winder consisting of 60 units is divided into two spans of 20 units each,
The yarn speed (V1) is set for the first span (1st winding unit to 30th unit), and the yarn speed V2 is set for the second span (31st unit to 60th unit).

〔Effect of the invention〕

As described above, in the present invention, the basic speed of the drum motor of each winding unit can be centrally set at once, eliminating the hassle of conventional setting operations, and is particularly effective in high-mix, low-volume production systems. It is.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram showing an example of a winding unit. 7...Drum, 12...Motor, 15...Central controller, 16...Setting device, 19,2
0...D/A converter, 21...Voltage, 22...
...triangular wave voltage, 23...bus line, 24...inverter, UI~UN...winding unit.

Claims (1)

[Scope of Claims] 1. In an automatic winder in which a plurality of winding units are arranged in parallel, a central controller that sets winding speed conditions and an inverter for driving a drum motor provided in each winding unit are connected via a bus line. , and in each winding unit, the above inverter is connected to a unit controller that controls the operation of the drum independently of the unit, and sets the basic speed of all winding units at once, and each unit sets the rotation most suitable for the winding situation. A winding speed control system for an automatic winder, characterized in that the speed of the motor is controlled by the unit controller.