EP0583469B1 - Spooler - Google Patents

Abstract

A spooler has a rotary spooling revolver (18) on which are mounted two spooling spindles (5-1, 5-2) which are alternatively brought to the spooling area (57) and to an exchange position (57') in which full spools (6-1) are exchanged for empty spools (10-3). The exchange position (57') is divided into two stop positions (80, 82) and the exchange is carried out in two stages.

Description

The invention relates to a winding machine according to the preamble of claim 4.

Such a winding machine is known for example from EP-A-374 536.

This winding machine has a winding turret with two winding spindles which are brought alternately into the winding area and into the changing position by rotating the winding turret.

For this reason, the winding spindle located in the winding area is referred to as the operating spindle and the winding spindle located in the changing position is referred to as the idle spindle.

With such a winding machine, the full bobbins must be removed from the idle spindle at the end of a winding trip and replaced with new empty tubes, since the thread continues to run continuously.

A compact design is sought for the winding turret. This means that the two winding spindles should move as close together as possible. Therefore, there is a danger that the rapidly growing bobbin grows against the old bobbin and destroys the bobbin.

On the other hand, a certain change time is required to remove the full bobbins and to fill the unloaded bobbins with empty tubes.

The object of the invention is to provide a method with which, despite the small spacing of the coil spindles for changing the full bobbins against empty tubes, there is always a sufficient changeover time.

This object is achieved by the features of claim 1 and by the features of claim 4.

The advantage of the invention is that the time required for the change is divided into two time segments.

The first period is very short, since in this period only the full bobbins have to be pushed off the idle spindle. The necessary equipment is attached to the winding head itself. The winding head is therefore self-sufficient to the extent that the time required to push off the full bobbins depends solely on the speed of the devices. It is thus achieved that the actually critical phase of the change process, in which there is a risk that the new coil grows against the old coil, is moved to this first period, which is very short. This enables a small distance between the two winding spindles.

The coil turret cannot be turned any further during the change phase. It follows from this that the movably mounted contact roller must dodge the growing coil. The maximum alternative route available for this can also be kept small according to the invention.

After the 1st phase of the changing process, the coil turret is rotated slowly or in cycles in accordance with the growing coil diameter, so that the contact roller essentially remains in place. At this time, the empty tubes - be it by hand or by the machine - must be brought in. Then the turret is stopped again and the second phase of the changeover takes place.

The second phase of the change process involves pushing empty tubes onto the waiting idle spindle. The duration of this second phase is also short, since only the transfer of the empty tubes must take place, but not also the creation of the empty tubes. The sum of the two time periods required according to the invention is therefore less than the change time required according to the prior art. Furthermore, the 2nd phase of the change is at a distance in time from the 1st phase. Therefore, the new coil has already grown to a larger diameter and is now growing less quickly. There is therefore no danger that the contact roller will travel to the end of the evasive path while the turret is stopped.

The invention is based on the fact that a large number of such winding machines are always operated simultaneously in a spinning system, which can cause the problem that not all winding machines can be operated simultaneously when the bobbin is required to be changed.

This can result in the problem that the empty tubes are not brought in in time. In order to avoid this malfunction, measures according to claim 2 are used.

This prewarning signal calls the operator or the machine to feed the empty spools.

The development of the invention according to claim 3 avoids the catastrophe if the empty tubes fail to materialize.

The features of claim 5 relate to information on dimensioning.

Claims 6 and 7 relate to further developments that make it possible quickly push the full spools off in the first stopping position and push on the empty tubes in the second stopping position.

According to the invention, this intermediate storage device does not interfere with the supply of the empty tubes, it being only important to remove the second stopping position sufficiently far from the first stopping position.

The features of claim 6 enable fully automatic empty tube assembly, in conjunction with the features of claim 7 even fully automatic winding operation. The invention is explained in more detail below on the basis of exemplary embodiments.

Fig. 1

eine erfindungsgemäße Aufspulmaschine mit zwei Anhaltstellungen in Seitenansicht auf die Spulspindeln;

Fig. 2

die Seitenansicht gemäß der Fig. 1 in der zweiten Anhaltstellung;

Fig. 3

die Frontansicht der Aufspulmaschine im Betrieb;

Fig. 4A bis 4D

die Frontansicht der Spulmaschine beim Spulenwechsel und bei der Leerhülsenbestückung;

Sofern im folgenden nichts anderes gesagt ist, gilt die Figurenbeschreibung stets für alle Figuren 1 bis 4D.Show it:

Fig. 1

a winding machine according to the invention with two stop positions in side view of the winding spindles;

Fig. 2

the side view of Figure 1 in the second stop position.

Fig. 3

the front view of the winding machine in operation;

4A to 4D

the front view of the winding machine when changing bobbins and when loading empty tubes;

Unless otherwise stated below, the description of the figures always applies to all of the figures 1 to 4D.

For this purpose, reference is made to the above-mentioned EP-A-374 536. 1 to 9 each show a winding machine according to the invention for a continuously running chemical thread 3, with a winding turret 18. Two winding spindles 5.1, 5.2 are mounted on the winding turret 18, which by rotating the winding turret 18 into a winding area 57 and into an exchange area 57 ' to be brought. During the winding operation, the Spooling turret 18 is further rotated in the winding area 57 by a rotary drive 33 controlled by the deflection of a sensing roller 11 in accordance with the diameter of the spools 6 that increases during the spooling travel.

In the present case, the change position designated 57 ′ in FIG. 2 now has an angular range 84 with two stop positions 80, 82. It is characteristic that the angular range between the second stopping position 82 and the first stopping position 80 is smaller than the winding area 57, in which the bobbin grows to the desired final diameter. The rotary drive 33 can be interrupted in the stopping positions 80, 82 during both stopping times.

The winding machine 17 is supplied with the thread 3 by the delivery mechanism 17 without interruption at a constant speed. For this purpose, the thread 3 is first passed through the head thread guide 1, which forms the tip of the traversing triangle. The thread with direction of movement 2 then arrives at the traversing device 4, which will be described later. Behind the traversing device 4, the thread 3 on the contact roller 11 is deflected at more than 90 degrees and then wound on the bobbin 6. The bobbin 6 is formed on the winding-up bobbin tube 10. The winding-up bobbin tube 10 is clamped on the rotatably driven operating spindle 5.

The operating spindle 5.1 has just been rotated, as shown in FIG. 1, with the winding-on bobbin tube 10.1 mounted thereon from the winding turret 18 into the start of the winding-up area 57 in order to wind up the incoming thread 3 there to form a bobbin 6 (see, for example, FIG. 2).

After the operating spindle 5.1 has been moved into the winding area 57, the winding on this operating spindle 5.1 begins. Here, the winding turret 18 is controlled by the deflection of the feeler roller 11 during the winding travel Motor to the rotary drive 33 rotated in the direction of rotation 56.

The further rotation takes place in accordance with the diameter of the coil 6 which increases during the winding travel (see FIG. 2). The path covered by the operating spindle 5.1 is referred to as the winding area 57. At the end of the winding trip, i.e. if the bobbin 6 is fully wound as a full bobbin 6.1, the operating spindle 5.1 is brought from the end of the winding area 57 into the change position 57 'by quickly rotating the bobbin turret.

As a result of this rotation, the idle spindle previously in change position 57 (see FIG. 2) is rotated to the start of the winding area 57, where the winding process is continued. The coil turret stops at first (1st stop position). First, the thread is separated from the full bobbin 6.1 for synchronous application of the thread to the empty tube 10.1. For this purpose, a changing device, consisting of the swivel lever 41 and the sheet 39 attached to it, is used. For further details of this thread changing process, reference is made to the aforementioned EP-A-374 536. In this first stopping position, however, the full coil 6.2 should also be pushed off the idle spindle.

First of all, the fully wound full coil 6.2, which has a high kinetic energy, must be braked. For this purpose, the drive motor 29.2 can be short-circuited, for example, so that electrical braking takes place. However, a mechanical brake (not shown here) can also be provided. The full bobbin 6.1 must then be pushed off the bobbin spindle 5.2. The sliding device will be discussed later. A certain amount of time is required for braking and pushing off. The distance between the two spindles 5.1 and 5.2 on the reel turret 18 must now be selected so that those on the now operating spindle 5.1 grow rapidly during braking and pushing off The coil does not grow against the full coil 6.1. This would destroy the spindles and the entire winding head. Therefore, a certain minimum distance between the winding spindles is required, which corresponds on the one hand to the desired bobbin thickness (diameter) of the full bobbin 6.1 and on the other hand to the possible thread speeds and the thread thickness (titer, denier). It is thus emphasized for clarification that during the braking and the pushing off of the full spool 6.1 from the spindle 5.2, the winding process is now continued on the operating spindle 5.1, so that practically no thread waste occurs.

The thread change from the full bobbin 6.2 to the empty tube 10.1 thus takes place in the 1st stopping phase.

To stop the bobbin turret in the first stop position, the control circuit of the rotary drive 33 is opened by means of the switch 88 (FIG. 1) and remains open during the first stop time necessary for changing the thread, for braking and for removing the full bobbin 6.1, so that the rotary drive 33 is interrupted .

Then the switch is automatically, e.g. closed by the incidence of a timing relay, so that the rotary drive 33 is in operation again.

The resting spindle 5.2 is now empty. The spool 6 continues to grow and moves by rotating the turret 18 in the direction of movement 56 towards the end of the winding area 57 lying in a clockwise direction.

FIG. 2 shows the second stopping position of the bobbin turret, which lies between the start and end of the winding area 57. In this position, the bobbin turret 18 is stopped again and the bobbin spindle 5.2 is equipped with empty tubes. The second stop position is reached when the coil is on the Spool spindle 5.1 has already grown to a larger diameter. In this position, the diameter increase of the take-up reel in operation is relatively small. A sufficient stopping time is therefore available for the movement of the contact roller 48, which has to evade the further increasing diameter by pivoting the arm 48, before the arm 48 strikes and the end of the control range of the displacement sensor 52 and the control device 54 is reached.

The second stopping position 82 is therefore as far as possible from the 1st stopping position in an area where the diameter increase of the bobbin 6 in the winding area 57 is so small that the empty tubes can be applied with the bobbin turret 18 at a standstill without the winding process being interrupted, without the speed control of the coil spindle leaving the predetermined control range and without the evasive movement of the feeler roller 11 being limited by a stop.

The empty sleeves are pushed on with a push-off device 65, which will be explained with reference to FIG. 4D.

When the winding spindle is equipped with fresh empty tubes in the second stopping position, the rotary drive 33 of the bobbin turret is started again by closing the switch 88. The switch 88 can be controlled, for example, by a timing relay. The winding process is now continued until the winding spindle 5.1 with the full bobbin formed thereon reaches the end of the winding area and is full. Since the other winding spindle is now equipped with empty tubes, it can be brought very quickly into the operating area by rotating the winding turret, specifically at the beginning of the winding section. In this case, as shown in FIG. 1, the contact roller is raised again by the cylinder-piston unit 21, so that the operating state shown in FIG. 1 can be produced and the thread can be applied to the new empty tube from the now finished bobbin.

The full bobbin 6.2 is removed from the idle spindle 5.2 by means of the doffer shown as an example in FIG. 4C, a bobbin transport device 65 that can be moved along the front of the machine and has the function of intermediate bobbin storage here.

The bobbin transport device 65 has a bobbin mandrel 66 at the height h at which the bobbin spindle 5.2 with the full bobbin 6.1 just formed thereon during the stopping time is in alignment with the idle spindle 5.2 in this position. The push-out device 67 is now started, which e.g. in DE-C-24 38 363 = US-A-3,974,973, to which full reference is made. In the present exemplary embodiment, the push-out device 67 engages behind the machine-side end face 92 of the bobbin tube of the full bobbin 6.2 with a fork and displaces it from the idle spindle 5.2 onto the bobbin mandrel 66 of the doffer 65. is shown in DE-A-24 31 567. This is a shell adapted to the coil diameter, which is attached below the 1st stopping position and can be extended synchronously with the push-off device 67. The advantage of this type of intermediate storage is that in the 1st stopping position it is not necessary to wait until a doffing device is called up from other areas of the machine and moved to the winding spindle in the 1st stopping position.

After the full bobbins have been deposited on the storage device, the switch 88 is closed and the rotary drive 33 for the winding turret 18 is started.

Now that the winding operation has led to the growth of the coil 6 so far that the second stop position 82 has now been reached switch 88 is opened again.

At this moment, as shown in FIG. 4D, a second doffer 65 with its winding mandrel 66 is brought into alignment with the winding spindle 5.3. On the mandrel 66 there is the required number of empty tubes 10.3, which is gripped behind by the fork of a push-out device 68 attached to the doffer on its end 98 facing away from the machine and is pushed onto the empty winding spindle 5.3, where it is clamped.

REFERENCE SIGN LISTING

1

Thread guide

2nd

Thread running direction

3rd

thread

4th

Traversing device

5.1

Operating spindle

5.2

Resting spindle

6

Kitchen sink

6.1

Full spool

7

wing

8th

wing

9

Guideline

10.1

Winding spool tube

10.2

Lifting spool sleeve

11

Sensing roller

12th

rotor

13

rotor

14

Traversing motor

15

Groove

17th

Delivery plant

18th

Winding turret

21

Piston-cylinder unit

22

transmission

23

Reverse thread shaft

25th

Lifting device

26

Thread transfer device

27

Direction of rotation

29.1

Synchronous motor

29.2

Synchronous motor

30.1

Frequency transmitter

30.2

Frequency transmitter

31

Control unit

33

Rotary drive

34

Swivel axis

35

Leading edge

36

Leadership notch

37

Slot

39

sheet

40

Traversing thread guide

41

Swivel lever

42

Sliding edge

43

slot

44

Straight guidance

45

Arrow direction

48

Swingarm

49

Swingarm

50

Rubber block

51

Support

52

Measuring device

53

Speed sensor

54

Control device

56

Direction of rotation

57

Winding area

57 '

Exchange position, exchange range, exchange position

58

tangent

60

Fender

61

magnet

63

carrier

64

guide

65

Coil transport device

66

Spool

67

Ejection device

68

Ejection device

80

first stop

82

second stop

84

Angular range

86

preferred area of the second stop position

88

switch

92

machine end face

94

lower distance

96

upper distance

98

face away from the machine

100

Speed sensor, winding spindle

101

Speed sensor, sensing roller

102

Speed sensor, thread run

103

Measuring amplifier

104

Evaluation circuit

105

Early warning signal transmitter

106

Timer

107

Position sensor, winding turret

108

Switch-off line

109

Switch

alpha

Clearance angle

H

Traverse stroke

H,

h1,

h2

Height above ground

S

Spindle turning circle

W

Thread bead

Claims (7)

1. Method of exchanging full spools for tubes in a spooler for a continuously running synthetic fibre, in which the full spools and the tubes are seated on two spooling spindles of a spooling revolver and are rotated by the spooling revolver into a spooling region for spooling and into an exchange position for exchanging the full spools for tubes,
   characterized in that
   the full spools of the spooling spindle situated in the exchange region are pushed off in a first stop position,
   and that the spooling revolver then in the course of spooling moves into a second stop position and is stopped there,
   the distance between the first and the second stop position being shorter than the spooling region,
   and that in the second stop position the tubes are mounted onto the unloaded spooling spindle.
2. Method according to claim 1,
   characterized in that
   before or at the start of the second stop position of the spool diameter an early warning signal indicating the start of the dwell time in the second stop position is emitted.
3. Method according to claim 2,
   characterized in that
   the spooler is switched off after a predetermined length of time after the early warning signal.
4. Spooler for a continuously running synthetic fibre, having a spooling revolver (18) on which are supported two spooling spindles (5.1, 5.2) which are brought as a result of rotation of the spooling revolver (18) alternately into a spooling region and into an exchange region, the spooling revolver during the spooling trip continuing to be rotated by a rotary drive (33), which is controlled by the deflection of a contact roller (11), in accordance with the growth during the spooling trip of the diameter of spools in the spooling region, and push-off devices (67) being provided for pushing the full spools off the spooling spindle situated in the exchange region,
   characterized in that
   the exchange region comprises an angular region (84) having two stop positions (80, 82) in which the rotary drive (33) is interrupted, and that in the first stop position push-off devices (67) are operated and in the second stop position the tubes are mounted onto the spooling spindle.
5. Spooler according to claim 4,
   characterized in that
   the first stop position (80) is offset by 180° relative to the start of the spooling region (57),
   and that the second stop position (82) lies in an angular region (84) behind the first stop position (80) which is smaller and at most equal to the spooling region (57).
6. Spooler according to claim 4 or 5,
   characterized in that
   a stationary tube push-on device is associated with the second stop position (82).
7. Spooler according to one of claims 4 to 6,
   characterized in that
   a spool receiving device (65) for interim storage of the full spools (6.1) from the inoperative spooling spindle (5.2) is associated with the first stop position (80).

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