EP0443418A1 - Textile machine - Google Patents

Abstract

The invention relates to a textile machine for the processing of textile material, having a control and drive unit (17) and a feed device (2) for the feed of textile material (50, 51) which is extracted from textile-material stores (A, R) assigned to the feed device (2), and having a delivery unit (3) which is assigned to the textile-processing machine and which delivers the discharged textile material to corresponding receiving stores (F2). In known machines of this type, the feed device for textile material is connected to the textile-processing machine for drive and control purposes. It is consequently difficult, especially when an automatic transport system is used, to co-ordinate this feed unit (2) in such a way that it meets the requirements of short drive transmissions, high flexibility, high dynamics and a good regulating possibility. It is therefore proposed that the feed device (2) be equipped at least partially with an independent control and drive unit (13, 9). <IMAGE>

Description

The invention relates to a textile machine according to the preamble of claim 1.

Depending on the process stage, different textile processing machines are used in a spinning mill. As a common feature, these different machine types have a feed and delivery unit for the textile material to be processed.

Essentially, in these machines, the feed and discharge unit, in terms of control and drive, are fully integrated into the drive and control unit of the textile processing machine.

Today's drive technology, in particular the individual drive via electric motors, enables a very finely tuned and controllable drive, whereby the communication of individual drive groups can also be carried out without problems and with almost no losses.

From DE-OS 22 30 069 a textile processing machine is known which delivers the textile material, in this case a sliver, to a can press provided with its own drive. Differences in the delivery speed of the sliver between the textile processing machine and the subsequent can press are detected by a sensor device and the drive of the can press is regulated according to the values determined in the process. The can press and the textile processing machine are controlled by a central control computer.

However, this system is not readily transferable to the supply of textile material by means of a supply unit to the textile processing machine. With regard to an automated spinning mill are in the feed unit to meet further requirements which the previously described prior art of the delivery unit does not include. For example, it is required that a feed unit can also be started independently of the subsequent textile processing machine. This is particularly necessary if a new batch of textile material has to be set up and positioned accordingly for transfer to the textile processing machine. This is particularly the case when part of the textile material is held on hold as a reserve material.

From the still known DE-AS 22 30 644 a feed table to a textile processing machine can be seen, the control, or connection of take-off devices for slivers via electromagnetic couplings, is carried out. Two pairs of pressure rollers are each provided with control and control elements, which switch on the corresponding reserve belt, which is in a waiting position, if the working belt fails. The drive of the conveyor rollers and the conveyor belt for feeding the fiber belts is mechanically and mechanically connected to the drive of the subsequent textile processing machine.

The invention is based on the object of designing the drive and control concept for a feed unit for a textile processing machine in order to be able to meet the special requirements for such a feed unit from the point of view of automation.

Automation can be understood on the one hand as the automatic tracking of textile material without stopping the textile processing machine and on the other hand the connection to an automatic transport system for the textile material.

This object is achieved in that the feed device is at least partially provided with an independent control and drive unit. For communication between the control unit of the textile processing machine and the control unit of the feed device, it is further proposed to connect these two control units via a connection path.

To further adapt the special requirements for the interface of a transport system assigned to the textile processing machine, it is also proposed to provide the dispensing device with an independent control and drive unit, which drive and control unit can also be connected to the control unit of the textile processing machine.

In order to enable an exact interaction of the feed device with an automatic transport system assigned to the feed device, it is advantageous to connect the control unit of the feed device and / or the delivery device with the control unit for the automatic transport system.

It is advantageous, as further proposed, that a sensor device for monitoring the storage space and / or for monitoring the memory content is assigned to the textile material stores assigned to the feed device and / or the delivery device, the respective sensor device being connected to the respective control unit.

If the textile material stores are cans, it is possible to design the sensors so that one checks for the presence of a can and the other monitors the fill level of this can. For exact control and for a clearly structured drive concept, it is proposed that the control unit of the feed device have an operating and / or display unit and a control and / or regulating electronics for controlling at least one motor for driving conveying elements for conveying textile material drawn off from the respective textile material store and with a sensor system for monitoring the feed device, in particular for monitoring the textile material transport.

Are the textile processing machine, e.g. a route, slivers submitted, so the promotion of the individual slivers on several revolving conveyor belts supported above the ground provides a way to control the supply of the individual slivers exactly. A separate drive motor is advantageously assigned to each conveyor belt.

The use of electric stepper motors results in an exact determination of the position during the entire transport process of the sliver, e.g. a beginning of a sliver, seen in the direction of transport. The further proposed use of electronically commutated brushless motors, e.g. DC motors have the advantage that the drive of the conveyor belt can also work in the overload range for a short time and without problems.

In order to ensure a problem-free interaction of the textile processing machine with respect to the delivery speed of the textile material supplied, it is proposed to provide a connection path between the control and regulating unit of the textile processing machine and the control electronics of the drive motors for transmitting guide signals.

The guide signals transmitted thereby ensure the synchronism of the feed device with the processing device, for example a drafting system, of the textile processing machine. The processing speed of the textile processing machine changes depending on how big it is Mass of the supplied textile material is. The mass obtained is determined, for example, by an inlet measuring element in front of the drafting system and a corresponding signal is sent to a control system.

In order that there is no misalignment of the textile material between the feed device and the processing device, a synchronism of these two elements is absolutely necessary.

However, in order to prevent the entire system from rocking in the event of brief disturbances, it is proposed to provide an attenuator in the connection path for filtering out these signals.

The teaching claimed by the invention provides a good possibility of regulating the entire system through direct control. In addition, the independent drive shortens the drive paths and thus the losses are smaller. In addition, due to the modular system, the drives can be designed specifically for the individual purpose. The proposed control, regulation and drive-related separation enables better allocation and communication to an assigned automatic transport system for the textile material.

Further advantages can be found on the basis of the following exemplary embodiments and their description.

Figur 1

eine schematische Draufsicht auf eine textilverarbeitende Maschine mit einer Zu- und Abführeinheit mit einem Transportsystem

Figur 2

ein schematisches Blockschaltbild für den Antrieb und die Steuerung der Zuführeinheit nach Figur 1

Figur 3

eine schematische Draufsicht auf eine Ausführungsform der Zuführeinheit mit einzelnen Transportbändern

Show it:

Figure 1

is a schematic plan view of a textile processing machine with a feed and discharge unit with a transport system

Figure 2

2 shows a schematic block diagram for the drive and the control of the feed unit according to FIG. 1

Figure 3

is a schematic plan view of an embodiment of the feed unit with individual conveyor belts

Figure 1 shows a textile processing machine, e.g. a route 1, which is provided with a drafting system, not shown. A feed table 2 is provided as the feed unit, and a belt storage 3 is provided as the delivery unit. Cans A, R for removing slivers are set up along the feed table 2. A denotes the working can and R the reserve can. The space which the cans A, R occupy is generally also referred to as a can rack 4. In this can frame 4, empty spaces can also be provided for receiving cans by the transport unit. This can improve the logistics of the transport system and thus its effectiveness.

It is also possible to use more cans A, R and empty spaces L than in the example shown.

The directional arrow p shows the feed and the direction of passage of the textile material before it reaches the tape storage 3. In the feed table 2 or the can frame 4, a transport system T 1 is assigned to a driverless transport vehicle 5 guided via a guideline 6.

As can be seen from the illustration, there are currently two cans R on the transport vehicle 5. The transport vehicle 5 is controlled by a control computer 7. This means that the transport vehicle receives the drive command or the drive order from the control computer 7 via a connection 8. The connection 8 can be wireless, via a connection cable or via a communication station. The drive 9 of the feed table 2 and the sensor system 10 is shown schematically.

The drive 9 is connected to a control unit 13 via a path 11 and the sensor system 10 via a path 12. The control unit 13 communicates via the line 14 with the host computer 7 of the transport system T 1.

The paths 15 and 16 form a communication option between the control unit 17 of the drive unit 18 of the route 1. The schematically illustrated sensor system 19 of the route 1 is connected to the control unit 17 via the path 21. The two connections 22 and 23 enable communication between the control unit 17 and the control unit 24 of the tape storage unit 3. The control unit 24 is connected via the paths 25 to a schematically shown drive 26 and via the path 27 to a sensor system 28 of the tape storage unit 3. There is also a connection 29 between the control unit 24 of the tape storage 3 and a host computer 30 of a further transport system T₂. The control computer 30 communicates via a connection 32 with a transport vehicle 31 which is guided via a guide 33.

In the example shown there is a can F₂ in the filling station, while an empty can F₁ is ready for tracking. F3 denotes a filled can, which was ejected from the band storage 3 after the filling process and is ready to be picked up by the transport vehicle 31.

The guideline 33 is provided with a reversing loop 34.

FIG. 2 shows a more detailed breakdown of the drive and control mechanism for the feed table 2. Starting from the control unit 13, there is a connection via the path 11 to a motor electronics 35 which acts on a motor 36. For the sake of clarity, only one motor 36 is shown in FIG. 2, but several motors 36, each with motor electronics 35, can also be used. Between the engine electronics 35 and the Control unit 17 for the route is a connection 37, in which an attenuator 38 is switched on. The motor electronics 35 or the motor 36 receives a command signal via this connection 37 in order to ensure the synchronization with respect to the feed speed of the textile material and the processing speed. In order to start up or start up the motor 36 and thus the feed device 2, the motor electronics are controlled by the control unit 13 via the path 11. The lines 40 and 41 represent a connection between the control unit 13 and a display and operating unit 39. A voltage supply unit 42 supplies the display and operating unit via line 44, the control unit 13 via line 43, and the line 47 Sensor 10 and motor electronics 35 via line 46 with current. In order to prevent incorrect switching, the power supply 42 is switched on by the control unit 17 of the line 1 via the line 45. In the specific case, this means that the voltage supply 42 is only effective when the control unit 17 or. route 1 is switched on. The connection 48 between the sensor system 10 and the motor electronics 35 makes it possible to intervene directly in the motor electronics for motor control. In certain cases, this allows the reaction time to change the engine speed to be shortened since the computer unit of the control unit 13 is bypassed.

In Figure 3 an embodiment is shown, the feed table 2 is composed of a total of eight individual conveyor belts B₁ to B₈. Each conveyor belt B₁ to B₈ is equipped with a separate drive motor 36₁ to 36₈. The drive motors 36₁ to 36₈ are each above a draw-off point above a can, only one can A being shown because of the better overview. The other seven cans are assigned accordingly. In circumferential belts B₁ to B verschw swiveling pressure rollers 49 are assigned to each of the withdrawal points. During operation, these rollers 49 move in the direction of the respective conveyor belt B₁ to B₈ and thereby enable the respective sliver to be pulled off by the clamping between the conveyor belt and the pressure roller 49. As can be seen from the top view, only every second, in the example shown four, sliver 50 is transferred to the transfer point 52 on route 1 submitted. The slivers 50 released in the process are combined at this transfer point 52 (not shown) to form a sliver fleece before it is fed to the drafting system of the line 1. The other slivers, also called reserve belts 51 in this operating state, are in the start position below a sensor row S and are switched on in accordance with the failure of a sliver 50, that is, one of the conveyor belts B 1 to B 4 must be started up and switched on via the respective motor 36. The monitoring of the slivers or the sliver break can also take place directly in the area of the withdrawal points.

The transport vehicle 5 with the guideline 6 is only indicated schematically here. In this exemplary embodiment, the line 1 and the tape storage 3 are connected to form a unit, which are controlled by a control unit 17. The sensor system 19 of the route 1 and the sensor system 28 of the tape storage 3 are connected to the control unit 17 via the paths 21 and 27. The special indication of the respective drive unit has been omitted. The transmission of a guide signal from the route 1 takes place via the control unit 17 and the control unit 13 to the individual electronic control units 35₁ to 35₈ of the motors 36₁ to 36₈. An attenuator 38 is installed in the path 16 provided for this purpose to damp short-wave signals.

Each can parking space is assigned a can sensor 53, which is connected to the control unit 13 via a line 54 and the sensor system 10 and the path 12. For reasons of clarity, only one sensor 53 was shown in the example in FIG. 3. The sensors 53 can also on the one hand to check whether a jug is present, or on the other hand to check the jug contents. These signals received by the sensors 53 are relevant for the provision of the transport system and for the preparation of the tracking of a reserve belt.

When line 1 according to FIG. 3 starts up, the slivers removed manually or automatically from the cans are placed in the take-off point between the respective conveyor belt B and the respective pressure roller 49. Via the control unit 39 and the control unit 13, the individual motors 36₁ to 36₈ are then started and the belts 50, 51 are thus brought into a predetermined position. Stopping the conveyor belts to reach a certain position of the respective sliver start can e.g. can be effected or controlled by the S sensor series. Here, e.g. the belt starts of the reserve belts 51 come to lie at the level of the sensor row S, while the belt starts of the fiber belts 50 are transferred to the transfer point 52, where they are combined to form a fiber belt fleece.

After this starting or also laying on of the eight fiber slivers, the further insertion of the fiber slivers 50 into the subsequent drafting device or the fiber tape subsequently exiting from the drafting device into the sliver storage can be done manually or automatically.

During operation, the engine speed of the motors 36 ₁ to 36 ₈ is adjusted according to the control dynamics of the drafting system of line 1 via path 16.

If a sliver breaks down as a result of a sliver break or an empty can, after notification via the sensor system 10, the corresponding conveyor belt B is switched on with the reserve belt 51 in such a way that the end of the sliver running out coincides with the start of the switched-on reserve belt 51 covered. This requires an exact sensor system and an exact start of the corresponding conveyor belt.

The notification of a failed sliver or an empty can is transmitted by the control unit 13 via line 14 to the control computer 7 of the transport system T₁. With this transmission, the position of the position of the empty can is also transmitted, whereby the control computer can transmit a clear driving order to the transport vehicle 5 for picking up and replacing the corresponding can with a new filled can. In the illustration of a further transport system T₂ was omitted in Fig. 3. However, it could be done similarly, as shown in the example of FIG. 1. The example according to FIG. 1 differs essentially from that in FIG. 3 in that the section 1 and the can rack 3 each have their own control and drive unit, which communicate with one another via the respective control unit 17 or 24. Otherwise, the example according to FIG. 1 differs insignificantly from the example according to FIG. 3. In FIG. 3, only the feed table 2 was shown in a special embodiment and with a finer structure. The additional transport system T₂ in the example of FIG. 1 has the task of conveying empty cans F₁ to the tape deposit and to transport the full cans F3 ejected in this tape deposit 3. The control unit 30 of this transport system T₂ is connected to the control unit 24 of the tape storage 3.

The exemplary embodiments shown relate to a route, but the proposal according to the invention is not restricted to such machines.

Reference numerals

1

route

2nd

Feed table

3rd

Tape storage

4th

Can rack

5

Transport vehicle

6

Guideline

7

Host computer

8th

connection

9

drive

10th

Sensors

11

path

12

path

13

Control unit

14

management

15

path

16

path

17th

Control unit route

18th

Drive route

19th

Sensor system route

20th

path

21

path

22

connection

23

connection

24th

Control unit tape storage

25th

path

26

drive

27th

path

28

Sensors

29

connection

30th

Host computer

31

Transport vehicle

32

connection

33

Guideline

34

Reverse loop

35

Motor electronics (single-sided stepper motor driver)

36

engine

37

connection

38

Attenuator

39

Display / operation

40

management

41

management

42

Power supply

43

management

44

management

45

management

46

management

47

management

48

connection

49

Pressure roller

50

Sliver

51

Reserve tape

52

Transfer point

53

Can sensor

54

management

A

= Work can

R

= Reserve jug

L

= Empty space

F

= Empty jug

F₁

= Filling can

F₂

= Full can

T₁

= Transport system

T₂

= Transport system

B

= Conveyor belt

S

= Sensor

Claims (21)

Textile machine for processing textile material with a control and drive unit (17) and a feed device (2) for feeding textile material (50, 51), which is removed from the textile material store (A, R) assigned to the feed device (2), and a dispensing unit (3) assigned to the textile processing machine, which dispenses the dispensed textile material to the corresponding storage device (F2), characterized in that
the feed device (2) is at least partially provided with an independent control and drive unit (13,9). Textile machine according to claim 1, characterized in that
the control unit (17) of the textile processing machine (1) is connected to the control unit (13) of the feed device (2). Textile machine according to claim 1 or 2, characterized in that
the dispensing device (3) is provided with an independent control and drive unit (24, 26). Textile machine according to claim 3, characterized in that
the control unit (24) of the delivery device (3) is connected to the control unit (17) of the textile processing machine (1). Textile machine according to one of claims 1 to 4, characterized in that
the textile material store (A, R) assigned to the feed device can be supplied or removed by an automatic transport system (T 1) controlled by a control unit (7). Textile machine according to one of claims 1 to 5, characterized in that
the storage device (F) assigned to the dispensing device (3) can be supplied or discharged by an automatic transport system (T₂) controlled by a control unit (30). Textile machine according to claim 5 or 6, characterized in that
the transport system (T₁, T₂) consists of a transport vehicle (5,31) guided over a guideline (8,33). Textile machine according to claim 5,6 or 7, characterized in that
the control unit (13, 24) of the feed device (2) and / or the delivery device (3) is connected to the control unit (30, 7) for the automatic transport system (T 1, T 2). Textile machine according to one of the preceding claims, characterized in that
A sensor device (53) is assigned to the textile material stores assigned to the feed device (2) and / or the delivery device (3) for monitoring the storage space and / or for monitoring the memory content, and the sensor device (58) with the respective control unit (13, 24) ) connected is. Textile machine according to one of claims 1 to 9, characterized in that
the control unit (13) of the feed device (2) with an operating and / or display unit (39) and control and / or regulating electronics (35) for controlling at least one motor (36) for driving conveyor elements (B₁-B₈) to promote the textile material removed from the respective textile material store and with a sensor system (10) for monitoring the Feed device (2), in particular for monitoring the transport of textile material, is connected. Textile machine according to claim 10, characterized in that
the sensor system (10) is connected directly to the control and / or regulating electronics (35) for controlling at least one motor (36) via a connection path (12). Textile machine according to claim 10 or 11, characterized in that
the operating and / or display unit (39) is combined in a central operating and display unit of the textile processing machine (1). Textile machine according to one of the preceding claims, characterized in that
the feed device (2) consists of several revolving conveyor belts (B₁ to B₈), which feed the textile material of the textile processing machine (1) in the form of fiber belts (50, 51). Textile machine according to claim 13, characterized in that
each conveyor belt (B₁-B₈) is associated with a drive electronics (36₁-36₈) drive motor and the respective control electronics (35₁ to 35₈) is connected to the control unit (13). Textile machine according to claim 14, characterized in that
the drive motors (36₁-36₈) are designed as electrical stepper motors. Textile machine according to claim 14, characterized in that
the drive motors (36₁-36₈) are designed as electronically commutated brushless motors. Textile machine according to one of claims 11 to 16, characterized in that
the control and regulating unit (17) of the textile processing machine (1) is connected to the control electronics (35) of the drive motors (36) via a connection path (37) for transmitting guide signals. Textile machine according to claim 17, characterized in that
An attenuator (38) for filtering out short-wave signals is provided in the connection path (37). Textile machine according to one of claims 13 to 18, characterized in that
the number of conveyor belts (B₁-B₈) is greater than the number of fiber belts (50, 51) receiving the textile processing machine (1). Textile machine according to claim 19, characterized in that
the conveyor belts (B₁-B₈) are combined in pairs in the work belt and reserve belt (B₁, B₂). Textile machine according to one of claims 13 to 20, characterized in that
the conveyor belts (B₁-B₈) are provided with a pull-off device for pulling off the slivers (50, 51) from the respectively assigned textile material stores (A).

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