EP0583469A1

EP0583469A1 - Spooler.

Info

Publication number: EP0583469A1
Application number: EP93918761A
Authority: EP
Inventors: Hermann Westrich; Albert Stitz
Original assignee: Barmag AG; Barmag Barmer Maschinenfabrik AG
Current assignee: Oerlikon Barmag AG
Priority date: 1992-03-05
Filing date: 1993-03-02
Publication date: 1994-02-23
Anticipated expiration: 2013-03-02
Also published as: JP3288377B2; WO1993017949A1; JPH06507368A; CN1031389C; TW252998B; KR0134112B1; CN1085183A; EP0583469B1; DE59301242D1; US5526995A

Abstract

L'invention concerne une machine de bobinage comprenant un revolver de bobinage (18) sur lequel reposent deux broches de bobinage (5-1, 5-2) qui sont amenées en alternance dans la zone de bobinage (57) et dans la position d'échange (57') pour remplacer les bobines pleines (6-1) par des vides (10-3), la position d'échange (57') se divisant en deux positions d'arrêt (80, 82) et l'échange s'opérant en deux étapes.The invention relates to a winding machine comprising a winding gun (18) on which rest two winding spindles (5-1, 5-2) which are fed alternately into the winding zone (57) and into the position d. 'exchange (57') to replace the full coils (6-1) with empty ones (10-3), the exchange position (57 ') dividing into two stop positions (80, 82) and the exchange taking place in two stages.

Description

DESCRIPTION

On dishwasher

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

Such a winding machine is known for example from EP-A 374 536 (Bag 1670).

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 in the alternating position is referred to as the idle spindle.

In such a winder, at the end of a winding trip, the full bobbins have to be removed from the idle spindle 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 equip 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 for pushing off the full bobbins depends exclusively on the speed of the devices. It is thus achieved that the actually critical phase of the changeover 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.

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

After the 1st phase of the changing process, the coil turret is rotated slowly or intermittently in accordance with the growing coil diameter, so that the contact roller essentially remains in place. At this time, the empty sleeves - be it by hand or by the machine - must be removed. Then the turret is stopped again. and the second phase of the change process 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 evasion path while the turret is stopped.

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

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 it possible to push the full spools off quickly in the first stopping position and to push open 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 with reference to exemplary embodiments.

Show it:

Fig. 1 ^• a AufSpülmaschine invention with two An¬ stop positions in side view of the winding spindles;

FIG. 2 shows the side view according to FIG. 1 in the second stopping position;

3 shows the front view of the dishwashing machine in operation;

4A shows the front view of the winding machine when changing bobbins up to 4D and when loading empty tubes;

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

For this purpose, reference is made to the above-mentioned EP-A 374 536. 1 to 9 each show a rinsing 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 and are rotated into a winding region 57 by rotating the winding turret 18 and brought into an exchange area 57 '. 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 thread 3 is supplied to the winding machine according to the invention by the feed 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. Then the thread with direction of movement 2 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 winding sleeve 10.1 clamped thereon, from the winding turret 18 into the start of the winding-up region 57, in order to open the incoming thread 3 to a bobbin 6 (see FIG. 2) ¬ wrap.

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 sensing 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 spool 6 which increases during the spool travel (see FIG. 2). The distance traveled by the operating spindle 5.1 is referred to as the winding region 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 the 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 synchronously placing the thread on the empty tube 10.1 instead. For this purpose, a changing device is used, consisting of the pivot lever 41 and the sheet 39 attached to it. For further details of this thread changing process, reference is made to the aforementioned EP-A 374 536 (Bag. 1670). 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, e.g. the drive motor 29.2 are short-circuited 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 removed from the bobbin spindle

5.2 are deported. 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 are growing 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. A certain minimum distance between the bobbin spindles is therefore necessary, 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). For the sake of clarity, it is thus emphasized that while the full spool 6.1 is being braked and pushed off 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 stopping 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 stopping time necessary for changing the thread, braking and removing the full bobbin 6.1, so that the turning 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 bobbin 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 the clockwise direction.

FIG. 2 shows the second stop division 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 spool 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 when the bobbin turret 18 is at a standstill without the The winding process is interrupted without the speed control of the bobbin spindle leaving the predetermined control range and without the deflection movement of the sensing 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 loaded 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, namely 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 established 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 which can be moved along the front of the machine and which here has the function of intermediate bobbin storage.

The bobbin transport device 65 has a bobbin mandrel 66 at the height h, in which the bobbin spindle 5.2 with the full bobbin 6.1 just formed thereon is in the first stop position during the stopping time, which in this position is aligned with the idle spindle 5.2. The push-out device 67 is now started, which e.g. in DE-PS 24 38 363 - US-PS 3,974,973 (Bag 906) is described, 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. like you in DE-OS 24 31 567 (Bag. 902) is shown. 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 is sufficient, the 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

88 switches

92 machine-side end face

94 lower distance

96 top 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 Warning device

106 timer

107 position sensor, turret

108 switch-off line

109 off switch

alpha drive-through angle

H traversing stroke h, hl, h2 height above ground

S spindle turning circle

W thread bead

Claims

PATENT CLAIMS

1. Method for changing full bobbins for empty tubes on a winding machine for a continuously running chemical thread, in which the full bobbins and the empty tubes sit on two winding spindles of a turret and from which

Turret turrets are turned into a winding area for winding and into a changing position for changing the full bobbins against empty tubes, characterized in that the full bobbins of the winding spindle located in the changing area are pushed off in a first stopping position, and that the winding turret thereafter in the course of the winding. reaches a second stopping position and is stopped there, the distance between the first and the second stopping position being shorter than the winding area, and that in the second stopping position the empty tubes are applied to the unloaded winding spindle.

2. The method according to claim 1, characterized in that before or at the start of the second stopping position of the coil diameter a prewarning signal for the beginning of the dwell time in the second stopping position is issued.

3. The method according to claim 2, characterized in that the winding machine after a certain time off ' cut after the warning signal is switched off.

On a dishwasher for a continuously running chemical thread, with a winding turret, on which two winding spindles are mounted, which are rotated alternately into a winding area and into an exchange area by rotation of the winding turret, the winding turret being controlled by the deflection of a sensing roller during the winding cycle ¬ first rotary drive is further rotated in the winding area in accordance with the diameter of the bobbins growing during the winding travel, and wherein push-off devices are provided for pushing the full bobbins off the winding spindle located in the changing area, characterized in that the changing area has an angular area (84) with two stopping positions (80,82), in which the rotary drive (33) is interrupted, and that push-off devices are actuated in the first stopping position and the empty tubes are placed on the winding spindle in the second stopping division.

Dishwasher according to claim 4, characterized in that the first stopping position (80) is offset by 180 degrees from the start of the winding area (57), and in that the second stopping position (82) is in an angular area (84) behind the first stopping position (80), which is smaller and at most equal to the winding area (57).

Dishwasher according to claim 4 or 5, characterized in that the second stopping position (82) is associated with a stationary empty-sleeve slide-on device.

7. Dishwasher according to one of claims 4 to 6, characterized in that the first stopping position (80) is assigned a Spulen¬ receiving device (65) for the intermediate storage of the full bobbins (6.1) from the idle spindle (5.2).