CN112011867A

CN112011867A - Driving unit for controlling spindle rotating speed of false twist crimping unit of texturing machine under yarn tension

Info

Publication number: CN112011867A
Application number: CN201911151910.9A
Authority: CN
Inventors: 德特勒夫·格根斯
Original assignee: De TelefuGegensi
Current assignee: De TelefuGegensi
Priority date: 2019-05-29
Filing date: 2019-11-22
Publication date: 2020-12-01
Anticipated expiration: 2039-11-22
Also published as: DE102019004302A1; CN112011867B

Abstract

The invention relates to a drive unit of a friction false twisting unit in a texturing machine. According to the invention, in the case of all 240 groups (all 480 groups or more groups in a plurality of special texturing machines) in a standard texturing machine, each group is driven by a separate DC motor, and the rotational speed of each individual motor among the motors is calculated from the yarn tension measurement via a transformer, a PCB and readjusted rapidly in order to warp very high-quality synthetic yarns.

Description

Driving unit for controlling spindle rotating speed of false twist crimping unit of texturing machine under yarn tension

Technical Field

The invention relates to a drive unit for a friction false twisting unit (hereinafter referred to as "unit") in a texturing machine, wherein each individual unit is driven by an individual AC motor (AC motor/AC motor), for example via a toothed belt, and is controlled by a central control console in the machine.

Background

Assemblies for texturing synthetic threads are known, for example, from DE102005023928a1, DE102008033646.7, DE 102009033312.6.

In this type of assembly, a so-called false twist is imparted to the synthetic yarn by means of disk-shaped friction elements of the assembly. The aim is to increase the overall volume and/or elastic elongation of the originally smooth thread and to keep the twist in the thread as uniform as possible. To achieve this, a yarn tension measuring device is fitted after the machine group, which ensures that: the drive of the friction unit is switched off when the thread breaks. In order to optimize the quality of the textured thread, attempts have been made in the past to influence the homogeneity of the thread twisted in the set before and after the set by means of additional devices via thread tension measurement and also to make the rotational speeds of all 240 motors in a standard texturing machine more uniform, which however does not actually lead to the desired result.

Disclosure of Invention

The invention is based on german patent DE102010034460.5 and chinese patent ZL201010510284.0, in which each individual DC drive motor, which drives an individual unit independently of a central console in the deformation machine, is connected to a PCB (electronic control circuit board with controllers, amplifiers, etc.) via electrical and sensor cables. The PCB is in turn connected via input and output cables to a transformer (which for example has an input voltage of up to 220V). The transformer converts 220V fed via the mains supply to 24V, 48V (or other voltages) as required and directs the new voltages and control commands onto the PCB which in turn transmits all required data via the electrical and sensor cables to the DC drive motor.

By means of a computer connected to each individual PCB via a control cable, each individual motor can be reached from a central console on the machine or elsewhere in the deformation plant and its data can be seen and changed if necessary. In this way, for example, statistical data for each individual deformation point can be set and recalled.

The drive system can also finally provide that the yarn tension measuring device is connected to the circuit in such a way that the adjusted motor speed and thus the spindle speed of the assembly can be controlled via the yarn tension of the yarn tension measuring device and can be correlated to the yarn tension of the yarn tension measuring device in order to provide an absolute uniformity of the twisted and deformed synthetic yarn.

In order that short-term excessively high or low yarn tension changes, such as knots in the thread, do not lead to misinterpretations and rotational speed changes, the system is equipped with fuzzy logic which ignores short-term excessively high or low yarn tension changes.

Drawings

Fig. 1 shows an embodiment of a DC motor driving an assembly controlled by a PCB. The PCB is connected via wires to a transformer having an input voltage of, for example, 220V. The PCB together with its electronic components are also connected via wires and sensor cables with the yarn tension measuring device and the DC motor, and furthermore there are input cables or output cables for connection with a computer, via which electrical and electronic commands can be transmitted to the PCB, for example in order to adjust or change the rotational speed of the motor.

Detailed Description

Fig. 1 shows a DC motor (DC motor/DC machine) 1, which drives a unit 3, for example, using a toothed belt 2. The synthetic thread 4 is guided through the assembly 3 and touches a detector bar 5 of a thread tension measuring device 7. The PCB6 is connected to the DC motor 1 via the wires 8 and the sensor cable 9, to the yarn tension meter 7 via the wires 10 and the

sensor cables

11, 12, and to the transformer 20 via the

wires

15, 16, 17, 18. The transformer 20 is supplied with electrical energy via a U-V-W electrical cable 19.

For the purpose of sending and receiving electrical and electronic signals into the PCB6, there are

connections

13, 14 of electrical cables to the PCB, which are plug connections for computer interfaces.

The drive unit according to the invention comprises a DC motor 1 which drives a false twist spindle assembly 3, for example by means of a toothed belt 2, and deforms a synthetic thread 4 which touches a detector bar 5 of a thread tension measuring device 7, wherein a PCB6 is connected to the DC motor 1 via a line 8 and a sensor cable 9 and to a transformer 20 via

further lines

15, 16, 17, 18, which transformer is supplied with electrical energy, for example 220V, via a U-V-W electrical cable 19, converts this voltage, for example to 48V and transmits it via the PCB6 to the DC motor 1 in order to drive the false twist spindle assembly by means of this energy, which DC motor 1 can be controlled by the PCB6 by means of the sensor cable and thus deforms the synthetic thread, characterized in that the thread tension measuring device now also drives the false twist spindle assembly via the line 10 and the

sensor line

11, 12 are connected to the PCB6 and thus also to the DC motor 1, which results in that each change in the thread tension is introduced into the PCB6 and these values can be converted in order to change the DC motor rotational speed in addition or in subtraction, so that for the first time the spindle rotational speed can be very accurately adjusted quickly depending on the thread tension of the textured thread and thus the highest thread quality can be continuously produced.

List of reference numerals

1 DC motor/DC motor

2 toothed belt

3 false twist crimping (texturing) unit

4 warp textured yarn

5 detector rod of yarn tension measuring instrument

6 PCB (printed Circuit Board), controller for, for example, motor rotational speed, etc

7 yarn tension measuring instrument

8U-V-W Current supply for Motor (e.g. 48V)

9 sensor cable for motor

10U-V-W current supply for a yarn tension measuring device

11 sensor Cable + (V)

12 sensor cable- (V)

13 connection to a computer, input to PCB

14 connection to a computer, output from PCB

DC current of 15 to PCB +

16 to PCB DC current-

17 DC current from transformer +

18 DC current from the transformer

19 U-V-W(220V)

20 transformers.

Claims

1. Drive unit comprising a DC motor 1 which drives a false-twist spindle unit 3, for example by means of a toothed belt 2, and deforms a synthetic thread 4 which touches a detector bar 5 of a thread tension measuring device 7, wherein a PCB6 is connected via a line 8 and a sensor cable 9 to the DC motor 1 and via further lines 15, 16, 17, 18 to a transformer 20 which is supplied with electrical energy, for example 220V, via a U-V-W electrical cable 19, which transforms it, for example, to 48V and which is transmitted via the PCB6 to the DC motor 1 in order to drive the false-twist spindle unit by means of this energy, which DC motor 1 can be controlled by the PCB6 by means of the sensor cable and thus deforms the synthetic thread, characterized in that the thread tension measuring device now also drives the false-twist spindle unit via line 10 and sensor line 11, 12 are connected to the PCB6 and thus also to the DC motor 1, which results in that each change in the thread tension is introduced into the PCB6 and these values can be converted in order to change the DC motor rotational speed in addition or in subtraction, so that for the first time the spindle rotational speed can be very accurately adjusted quickly depending on the thread tension of the textured thread and thus the highest thread quality can be continuously produced.

2. The drive unit according to claim 1, wherein the spindle rotational speed of the false twist spindle assembly in the texturing machine is controlled by the yarn tension, characterized in that the drive motor is a DC motor 1, since very small rotational speed changes of > 0.1% can be realized rapidly with only one DC motor 1 and one single associated PCB 6.

3. Drive unit according to one of claims 1 and 2, in which the spindle rotational speed of the false twist spindle assembly in the texturing machine is controlled by the yarn tension, characterized in that the yarn tension measuring device 7 is connected with the PCB by means of a sensor line in such a way that a changed value calculated on the basis of the yarn tension change results in a change of the rotational speed of the DC motor 1 and of the false twist texturing unit 3 only if the yarn tension change lasts longer than 1 second, that is to say a so-called fuzzy logic is integrated in the PCB 6.

4. Drive unit according to one of claims 1 to 3, in which the spindle rotational speed of the false twist spindle assembly in the texturing machine is controlled by the yarn tension, characterized in that, at the central control station in the texturing machine, a computer is connected to all PCBs of the machine, which computer makes all important data (e.g. yarn tension, rotational speed, etc.) visible, controllable and variable at the computer and at each texturing position.

5. The drive unit as claimed in one of claims 1 to 3, wherein the spindle rotational speeds of the false twist spindle assemblies in the texturing machines are controlled by the yarn tension, characterized in that, in the case of a corresponding installation in the texturing machines, the computer can also be located anywhere in a central control room in the texturing shop and can retrieve, change or control data therefrom, for example for a very large number of texturing machines, so that statistical data about the availability of texturing locations on each texturing machine can also be implemented.

6. Drive unit according to one of claims 1 to 3, wherein the spindle rotational speed of the false twist spindle assembly in the texturing machine is controlled by the yarn tension, characterized in that 12, 24 or any other number of drive units are assembled together with the yarn tension measuring device in a post-processed aluminum profile or in a plurality of other profiles.

7. Drive unit according to one of claims 1 to 3, wherein the spindle rotational speed of the false twist spindle set in the texturing machine is controlled by the yarn tension, characterized in that 12, 24 or any other number of said drive units are assembled in a so-called spindle beam made of mineral casting or made of a mixture consisting of mineral casting and other materials (profiles).

8. Drive unit according to one of claims 1 to 3, wherein the spindle rotational speed of the false twist spindle assembly in the texturing machine is controlled by the yarn tension, characterized in that the drive unit can be used for retrofitting in texturing machines. In order to carry out this modification of the texturing machine, which has hitherto been driven by an AC motor, of the false twist texturing unit, the so-called spindle bar, the receiving surface for the motor, the drive pinion of the motor and the spindle rotational speed, which is controlled by the yarn tension, of the false twist spindle unit are already present and can be used, it is merely necessary to fit the DC motor 1, the PCB6 and the transformer 20 in the respective channels and to connect the yarn tension measuring device to the respective PCB.