EP1190974A2 - Winding machine in particular for sensitive material - Google Patents

Abstract

The bobbin winder (1), especially for delicate yarns (8), has feed rollers (11) and a powered bobbin spindle (4). A monitor (14) registers the yarn tension, and generates proportional signals to the control for the bobbin spindle and the reciprocating yarn guide (10). The yarn tension monitor has a single roller (16) on a cantilever arm (15) with a restricted movement. The monitor roller deflects the yarn path from the feed to the yarn guide, without additional deflection rollers. The bobbin winder, for delicate yarns, has a cantilever to support the monitor roller. The monitor has at least one sensor to register the bending movements of the cantilever, and generate a signal proportional to the detected movements. The cantilever arm can be a weighing beam, to register the force of the yarn on the roller, and generate a proportional signal. The cantilever beam is fitted with expansion measurement strips at its nominal bending zone. The bending beam can be within a housing tube, with adjustable limit stops to set the movement range. The winder has a number of bobbin winding heads, each with a drive spindle and a reciprocating yarn guide. Each bobbin winding head has its own yarn tension monitor, with a single roller, within a separate machine unit (13).

Description

The invention relates to a winder for a charging device supplied, especially sensitive, rinsed material, with a driven winding spindle and a device to determine a voltage proportional to the tension in the winding material Signals to control the drive of the winding spindle, as well as with a traversing device. The feeder is often not part of the winder, but becomes in the end area a manufacturing system upstream of the winding machine, e.g. B. a spinning plant, a finishing plant or the like. But there can also be a separate inlet with guide rollers the winding machine can be provided. Under delicate ware e.g. thread or ribbon-shaped material understood, in particular Rinse material made of carbon fibers or glass fibers that are sensitive against bending and / or friction. In particular, multiple changes of direction of the ware, especially under large wrap angles and small radius can become an unacceptable Damage to the ware. For well-known dancer arm devices such alternating bends of the winding material are typical.

A winding machine of the type described in the opening paragraph is known from DE 37 23 593 C1 known. The winding machine has a winding spindle on, which is driven by an adjustable drive. On the A spindle is slipped onto the winding spindle, which is used for winding Rinse material. The material to be wound is moved using a traversing device or another thread tail on the sleeve distributed laid. There is one in front of the traversing device Dancer arm device, the one of the tension (tensile force) in the winding material proportional signal is determined and used to control the drive the winding spindle starts. The known dancer arm arrangement has two stationary pulleys and one between them movable dancer arm. The winding material wraps around these three Pulley type rollers. A change in Thread tension causes a movement of the dancer arm that follows Size and direction is detected. This signal is called the manipulated variable used in a control loop, the drive motor so is influenced that the tension in the winding material back to its original Takes value. The tension in the winding material itself generated by the dancer arm itself. For this purpose the Dancer arm via a spring force and / or a weight force affected. The tension in the winding material generated in this way must on the other hand when winding up the drive motor of the winding spindle be applied or overcome. That from the drive motor The torque delivered to the winding spindle depends on corresponding to the control voltage of the motor and the speed the engine characteristic. Torque control is available. The The speed of the winding spindle depends on the delivery speed of the ware and the diameter of the Spool forming coil.

EP 0 712 374 B1 describes a winding machine for one constant speed running thread known. The dishwasher has a traversing device for back and forth movement of the thread across its direction. It is a winding spindle provided that is driven by a motor. As a facility to determine one of the voltages in the winding material proportional A dancer arm device made of two is also used here stationary pulleys and one on the dancer arm Pulley. It is also disadvantageous here that the items to be rinsed have several Deflection pulleys with sometimes considerable wrap angles in runs in opposite directions. So that the rinsed material with considerable bending stress, including alternate bending, and with corresponding frictional forces, which in particular in the case of sensitive items to be damaged or destroyed Rinse good can lead.

DE 29 05 713 C2 describes a device for measuring the Known tension of a running yarn with fixed yarn guides, which ensure a straight path of the running yarn. The yarn is fed through a loading device a first fixed head thread guide and over intermediate devices to a second fixed Thread guide before it runs onto a traversing device and ultimately wound up on the driven winding spindle becomes. The two fixed guides is a power transmission and a yarn deflection device assigned. The power transmission has a yarn contact surface along which the yarn runs rubs and in this way a cantilever in time with the Bend deflection device. Via a strain gauge becomes the tension of the yarn at maximum deflection and measured at the zero crossing of the traversing device. But also here the device for determining the voltage in Spulgut at least two fixed guides. is disadvantageous in this winding machine that the material to be rewound several times and in considerable Way is claimed for friction, what with sensitive Rinse is not acceptable.

The invention has for its object a winding machine Provide the type described above, with which one of the Voltage in the winding material proportional signal for regulating the Drive of the winding machine under particularly gentle treatment of the ware is possible.

According to the invention this is achieved in that the device to determine a voltage proportional to the tension in the winding material Signals has a single role on one in one limited area movable cantilever is arranged and over the the ware between the feeder and the Traversing device while avoiding further deflection rollers is led directly.

The invention is based on the idea that instead of the three in State of the art each used pulleys only one to provide only role and the tension in the winding material over a To determine movement of this single role. So is a signal Provided, which on the control device on the Drive motor of the winding spindle acts. The only role is on a movable, in particular pivotable or bendable cantilever mounted. The agility is on one very small area limited, of a different order lies than with the movement of a dancer arm. Realization a wrap on the single roll can not be waived. However, it is possible through enlargement of the diameter of the single roll to the bending radius increase so that the rinsed material is comparatively gentle and only in to bend in one direction on the roll. The two in the state of the Technology known fixedly arranged pulleys or - Guided tours do not apply as separate elements. Your functions are taken over by other institutions. The only role is immediately between the end of the feeder and the traversing device, d. H. between these mentioned guide points are no further deflection rollers provided that would burden the ware. In the state of the art the tension in the winding material between the two deflection rollers generated. With the subject of registration, the tension in the Rinse material is generated between the single roll and the winding spindle. The tension in the winding material is no longer caused by the dancer arm, but caused by the drive of the winding spindle. The drive motor the winding spindle is no longer just deviations in the tension in the winding material, but determines only that Tension in the winding material. The winding material runs from the single roll directly into the traversing device. This will become the laying triangle advantageously enlarged. The facility for investigation one of the voltages in the winding material proportional signal comes with a comparatively small number of individual parts from and is compact and inexpensive to manufacture. Without too it is additional mechanical components, such as deflection rollers possible, different characteristics of voltage profiles to generate during a winding trip. Therefore, this is easy achievable because the thread tension alone from the drive motor the winding spindle is applied. So z. B. in the form of Software tables decreasing, increasing or constant Voltage values are stored that are easy and reproducible are available. Since the winding material only wraps around a single roll, the bending stress of the winding material and the Frictional forces significantly reduced. The movement of the only one Roll at the free end of the cantilever is only a few tenths Millimeters, d. H. the wrap angle of the winding material at the single role changes only insignificantly and the inlet geometry of the ware remains during the entire winding journey almost constant.

It is particularly advantageous if the in the limited area movable cantilever is designed as a bending beam or a Bending beam, and the device for determining a at least one of the signals proportional to the voltage in the winding material Has sensor for detecting the deflection. There is the Possibility that the cantilever is designed directly as a bending beam is, so that it is only necessary, the cantilever to be clamped on one side and a bend conveys the about the only role of running winding material. It is but also possible that the cantilever arm only as a lever arm acts and in turn connected to a bending beam stands, which is bent over the lever arm. That way it is possible, under appropriate installation conditions, the lever arm consciously enlarge. The bending beam is equipped with a sensor Provide detection of the deflection. The sensor can immediately be arranged on the bending beam or with the bending beam stay in contact. Strain gauges in particular come as sensors, but also force sensors, displacement sensors and the like in question. The respective sensor can be used immediately be provided with an evaluation electronics, with the help of which Deflection into an electrical signal, especially one electrical voltage is transformed. The combination of the sensor with the evaluation electronics allows a small compact Construction.

But it is also possible that the cantilever is designed as a balance beam and is stored, and that the device for determining at least one of the signals proportional to the voltage in the winding material a sensor for detecting the force of the ware on the only one Has role. The balance beam can also be used as a control lever be trained. It is largely stiff and central or pivotally mounted off-center, around that of the ware the only role force exerted on the sensor. Strain gauges, force sensors can also be used here as sensors or the like.

The preferred embodiment of the cantilever, however, is the bending beam, which is covered with strain gauges. It is without further possible, the bending beam at one end in the To store the frame of the winding machine clamped, for example in the middle area the cantilever to arrange the strain gauges and on free end to provide the only role. It makes sense the strain gauges in association with the bending plane of the Arrange the bending beam on the bending beam.

The bending beam can have a predetermined bending area in which the strain gauges are arranged. Such a predetermined bending area can be designed as a weakening of the bending beam, especially about the elastic bending deformation at this point to make effective on which the strain gauges are arranged are. Since the bending beam is usually rod-cylindrical in shape has, the predetermined bending area by flattening with be flat surfaces on which the strain gauges are particularly easy and effective to apply.

The flexible beam can be bent in a housing tube be stored. Adjustable stops for limiting the Bendability is then provided in the housing tube. The adjustable Stops can be realized by adjusting screws become. The housing tube also provides protection for the Bending beams, the sensors and the evaluation electronics.

If the winding machine has several winding heads, each with one Has drive spindle and one traversing device each, can the devices assigned to each of the winding heads for Determination of a signal proportional to the voltage in the winding material a single role in a separate machine unit be arranged. The facilities with the only one Roles are then relative in the separate machine unit far from the traversing device of each winding head arranged so that the laying triangle is particularly long and the voltage differences in the Spulgut become small.

Fig. 1

eine schematisierte Seitenansicht der Spulmaschine,

Fig. 2

einen Schnitt durch den Sensor gemäß der Linie II-II in Fig. 1,

Fig. 3

eine ähnliche Darstellung wie Fig. 1, jedoch an einer Spulmaschine mit 5 Spulköpfen, und

Fig. 4

eine ähnliche Darstellung wie Fig. 2, jedoch mit einem einen Waagebalken aufweisenden Sensor.

Exemplary embodiments of the invention are further illustrated and described with reference to the drawings. Show it:

Fig. 1

a schematic side view of the winding machine,

Fig. 2

2 shows a section through the sensor along the line II-II in FIG. 1,

Fig. 3

a representation similar to Fig. 1, but on a winder with 5 bobbins, and

Fig. 4

a representation similar to FIG. 2, but with a sensor having a balance beam.

1 shows the essential parts of a winding machine 1. The winding machine 1 has a machine frame 2, which carries a front panel 3. In the front panel 3 is one Spool spindle 4 rotatably mounted in a known manner extends through the front panel 3 and is free to the outside ends. The winding spindle 4 is driven by a drive motor driven, which is not shown for the sake of clarity is. The winding spindle 4 can be pivoted to a limited extent about a bearing 5 stored. To enable this pivoting movement is in the Front plate 3, an elongated hole 6 is provided. On the winding spindle 4 a sleeve 7 is slipped on, onto which the material to be wound 8 is wound becomes. The solid line is the beginning of the Winding process, that is, the winding travel. In double dotted dashed lines is the position of the Drive spindle 4 with the winding formed at the end of Indication of winding trip.

In the area of the front panel 3 is in association with the winding spindle 4 a rotatable contact roller 9 mounted in a fixed position. The sleeve 7 on the winding spindle 4 is at the beginning of the winding trip on the circumference the contact roller 9. This contact is made during the winding trip through the surface of the winding of the winding material 8 replaced. The contact roller 9 and in particular the winding spindle 4 is assigned a traversing device 10, with the aid of which in a known manner, the ware 8 is laid over the length of the sleeve 7 becomes.

The winding material 8 is the winding machine 1 via a loading device 11 fed in the direction of arrow 12. The Feeding device 11 is not part of the Spooling machine 1 but sits at the end, for example Production unit for the winding material 8, with which the winding material 8 is continuously fed to the winding machine 1. But it is also possible, the loading device 11 in the area of Arrange winder 1. The loading device 11 here consists of two rolls or rollers leading the material to be wound 8 with which the winding material 8 is guided without changing direction.

On a separate machine unit 13, which is also on the Machine frame 2 is mounted, a device 14 for Determination of a voltage proportional to the winding material 8 Signals provided for controlling the drive of the winding spindle 4. The device 14 has a cantilever arm 15, which is essentially is designed as a cylindrical axis. The cantilever arm 15 is at one end, the machine unit 13 facing firmly clamped and supported on its cantilever End of a roll 16, over which the material to be wound 8 is passed. The Roll 16 represents the only roll or deflection point for that Rinse material between the feed device 11 and the traversing device 10. The cantilever arm 15 with the roller 16 is relative to the loading device 11 and the traversing device 10 arranged and positioned so that the ware 8th the roller 16 in a corresponding wrap angle wraps. The roller 16 is freely rotatable on the cantilever arm 15 stored in order to deflect the winding material 8 as gently as possible. The Spulgut 8 is inevitable here a bending stress exposed. However, this is about the opposite to normal dancer arm arrangements only one bend after one Side, but not an alternate bend. In addition, the Diameter of the roller 16 chosen to be comparatively large Keep bending stress small. During the winding trip the ware 8 bends the cantilever 15 with the one sitting on it Roll 16 in the direction of arrow 17, which acts as a bisector between those running on and off the roll 16 Spulgut results.

The device 14 with the roller 16 replaces the known dancer arm arrangement from the prior art, consisting of two stationary arranged pulleys and a movable, on the dancer arm arranged role exists. It can be seen that the Subject to registration, the two deflection rollers were eliminated and the ware are free from alternating bending stress remains. The arrangement of the device 14 on a separate Machine unit 13 provides the possibility of removal between the traversing device 10 and the device 14 as large as possible to make the laying triangle large. But it is also possible to use the device 14 in one to arrange other area of the machine frame 2.

It can be seen that the device 14 for determining a of the voltages in the winding material 8 proportional signal for control the drive of the winding spindle 4 works differently than known dancer arm devices. While using a The tension in the winding material 8 through the dancer arm is generated, which is loaded by springs, weights or the like and the drive motor of the winding spindle 4 only differences the Equalizing tension, the application and provision takes place the tension in the winding material 8 in the subject of the application alone the drive motor of the winding spindle 4. The only roller 16 of the Subject of registration also fulfills the functions of the two Deflection rollers in the prior art. The tension in the winding material 8 is in the prior art between the two pulleys generated. With the subject of registration, the tension in the winding material generated between the winding spindle 4 and the roller 16. At the booth The technology creates the laying triangle between the Traversing device upstream last pulley of the Dancer arm device and the traversing device. With the subject of registration the laying triangle is created between the only one Roller 16 and the traversing device 10.

FIG. 2 shows a section along the line II-II in FIG. 1 taking into account the direction of arrow 17. It is the Facility 14 illustrates. The device 14 has the cantilevered cantilever 15 in the form of a bending beam 18 on. The bending beam 18 is at one end 19 mounted clamped in a housing tube 20. The casing tube 20 is in turn mounted on the machine unit 13. So that will one end 20 of the bending beam 18 held so fixed that the other end 21 of the bending beam 18 projects freely. In the area this end 21, the roller 16 is freely rotatable. The Bending beam 18 has a predetermined bending area in its central area 22 on. The predetermined bending area 22 is flattened and tapering of the bending beam 18. At this point the bending beam has a plate-shaped part 23 with planes Surfaces on which e.g. B. strain gauges 24 are arranged are a sensor 25 for detecting the deflection of the Form bending beam 18 due to the tension in the winding material 8. in the Area of the end 19 of the bending beam 18 or at least in An evaluation electronics 26 is provided with housing tube 20 whose help via a cable 27 that the bending of the bending beam 18 corresponding voltage signal of the not shown Control device for driving the winding spindle 4 supplied becomes.

The housing tube 20 carries adjustable stops 28 for the Limitation of the bendability of the bending beam 18 in the direction of arrow 17. The adjustable stops 28 can be as Adjusting screws should be formed. In the front end area of the Housing tube 20 is still a seal 29 against that Penetration of dust and other foreign bodies into the interior of the housing tube 20 is provided.

3 shows a winding machine 1, on the machine frame 2 thereof five winding heads 30 are arranged. Each winding head 30 is like this formed, as already described with reference to FIG. 1 has been. A separate machine unit 13 is provided here, on which each assigned to a winding head 30 Means 14 are arranged together. The each Laying triangles formed are of different sizes. This is not disadvantageous, however, since even the smallest installation triangle still has a considerable length, so that voltage changes negligible in the winding material 8 due to the laying are. These changes in tension are so small that they are conscious be damped by the control device for driving the Spool spindle 4 does not respond to such voltage changes.

4 shows a further embodiment of the device 14 in a representation similar to FIG. 2. The cantilever arm 15 is here designed as a balance beam 31. The balance beam 31 adjusts stiff component which, for example, in its central region in a bearing 32 can be pivoted to a limited extent is stored. The associated sensor 25 is here as a force sensor 33 formed and arranged within the machine unit 13. The force sensor 33 measures the one that arises at its location Force of the balance beam 31, which is caused by the winding material 8 is exerted on the reel 16 during the winding travel.

LIST OF REFERENCE NUMBERS

1

Dishwasher

2

machine frame

3

front panel

4

winding spindle

5

camp

6

Long hole

7

shell

8th

winding material

9

contact roller

10

Traversing device

11

feeder

12

arrow

13

machine unit

14

Facility

15

cantilever

16

role

17

arrow

18

bending beam

19

The End

20

housing tube

21

The End

22

Predetermined bending area

23

plate-shaped part

24

strain

25

sensor

26

evaluation

27

electric wire

28

attack

29

poetry

30

winding head

31

balance beam

32

camp

33

force sensor

Claims (7)

Spooling machine (1) for in particular sensitive material (8) fed via a loading device (11), with a driven winding spindle (4) and a device (14) for determining a signal proportional to the tension in the material (8) for regulating the drive of the Winding spindle (4) and with a traversing device (10), characterized in that the device (14) for determining a signal proportional to the tension in the material to be wound has a single roller (16) which is mounted on a cantilever arm (15 ) is arranged and over which the material to be wound (8) is guided directly between the loading device (11) and the traversing device (10) while avoiding further deflecting rollers. Winding machine according to claim 1, characterized in that the cantilever arm (15) movable in the limited area is designed as a bending beam (18) or has a bending beam, and in that the device (14) for determining a signal proportional to the tension in the winding material (8) has at least one sensor (25) for detecting the deflection. Winding machine according to claim 1, characterized in that the cantilever arm (15) is designed and mounted as a balance beam (31) and that the device (14) for determining a signal proportional to the voltage in the material to be wound (8) has at least one sensor (25) for Detection of the force of the ware (8) on the single roller (16). Winding machine according to claims 1 and 2, characterized in that the bending beam (18) is covered with strain gauges (24). Winding machine according to claim 4, characterized in that the bending beam (18) has a predetermined bending area (22) in which the strain gauges (24) are arranged. Winding machine according to Claim 4 or 5, characterized in that the bending beam (18) which can be bent to a limited extent is mounted in a housing tube (20) and that adjustable stops (28) are provided for limiting the bendability in the housing tube (20). Winding machine according to one of claims 1 to 6, characterized in that the winding machine (1) has a plurality of winding heads, each with a drive spindle (4) and a traversing device (10), and that the devices (14) assigned to each winding head for determining a the signal proportional to the voltage in the material to be wound (8) is arranged in a separate machine unit (13) in each case in a single roller (16).

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