EP2163668B1 - Sample warper, rotating creel and spool holder - Google Patents

Description

The invention relates to a pattern warping machine having a warping drum, at least one yarn guide, which is movable about the circumference of the warping drum, and a rotary gate carrying at least one coil, which is rotatable together with the yarn guide, wherein the coil is mounted on a coil holder.

Furthermore, the invention relates to a rotary gate.

Such a sample warper is for example out EP 1 479 806 A2 known.

A sample warping machine is used to produce pattern chains or short production chains. Such chains are formed by the fact that threads using the thread guide over the circumference of the warping drum and stored there usually on conveyor belts, with the help of which they are transported away from the yarn guides. The threads are deducted from coils, which are arranged in the rotary gate. Since the rotary gate rotates together with the yarn guides, you can simultaneously wrap several threads around the circumference of the warping drum to keep the production time for such a pattern or short chain small.

Depending on the length of the chain to be created and the pattern in the chain, i. the arrangement of the various threads, the yarn consumption of the individual coils can be highly different. In many cases, the thread supply wound up on a spool is not sufficient to completely produce a chain. When a bobbin is used up, you have to stop the sample warping machine, take out the empty bobbin, put on a full bobbin and knot the thread ends together again. In many cases, several bobbins are not empty at the same time, so you can replace them during a break, but you have to stop the machine repeatedly to replace empty bobbins. Such production interruptions reduce the productivity of the machine.

The invention has for its object to provide a sample warping machine with a high productivity.

This object is achieved in a sample warping machine of the type mentioned above in that the coil holder is releasably secured in the rotary gate, wherein the coil holder is inserted into a receptacle.

With such a configuration, the time required to replace a coil is significantly reduced. You can already prepare the bobbin on the bobbin holder ready for production. For example, you can already pass the thread that is to be subtracted from the spool by the corresponding thread brake or a balloon crusher. A threading the thread is omitted in the rotary gate, because this preparatory work has already been done outside the rotary gate. The replacement of the coil is therefore limited to take out the bobbin holder with the empty spool out of the rotary gate and insert another bobbin holder with a fresh or full bobbin in the rotary gate. Thereafter, only two thread ends have to be knotted together and the production process can be continued. The resulting time savings benefit the production, so that the productivity can be kept high. By inserting the bobbin holder in a receptacle, a positive connection between the bobbin holder and the rotary gate is generated, which is sufficient to hold the bobbin holder during operation of the machine in the rotary gate. It merely has to be ensured that the forces acting on the coil holder during operation can not move the coil holder counter to the insertion direction out of the receptacle. However, since the forces acting on the coil holder during operation are known, this condition is easy to fulfill.

Preferably, the bobbin holder cooperates with a locking pin, which is movable perpendicular to the insertion direction of the bobbin holder. In this case, you get a backup of the bobbin holder in the rotary gate practically in all directions. The bobbin holder can be moved in the insertion direction to be inserted into the receptacle. Accordingly, a movement in the opposite direction required to take the bobbin holder out of the creel. This movement can be reliably prevented with the locking pin. The locking pin is movable perpendicular to the insertion direction. The bobbin holder can therefore only be removed from the receptacle when the securing pin has previously been correspondingly pulled out in order to release the bobbin holder.

Preferably, the locking pin is biased by a spring in a holding position. This increases security. The likelihood that the locking pin does not engage in the bobbin holder due to an operator error is comparatively low. When the bobbin holder has been moved to its end position in the receptacle, the locking pin is automatically brought into engagement with the bobbin holder by the spring.

Preferably, the receptacle is U-shaped. This U-shape then encloses a foot of the bobbin holder so that a movement of the bobbin holder with respect to the rotary gate is basically possible only in one direction, namely in the insertion direction or opposite thereto.

It is preferred that the U extends perpendicular to the axis of rotation of the rotary gate. You can then arrange the coil so that the thread can be pulled over the head of the coil. The insertion of the bobbin holder into the receptacle then runs perpendicular to this withdrawal direction, so that the forces that the Coil holders from the rotary gate trying to get free, can be kept small.

Preferably, the rotary gate has a support plate arranged perpendicular to the axis of rotation, on which the receptacle is arranged. In this case, one can insert the coil holder, for example, radially or circumferentially or at an angle between the radial direction and the circumferential direction in the recording. This is a particularly simple embodiment to hold the coil holder on the rotary gate.

It is preferred that the receptacle opens radially inwardly. Accordingly, the spool holder is reliably held in place during operation when centrifugal forces act on it. The centrifugal forces press the coil holder even deeper into the recording, but they do not solve it from the recording.

In an alternative embodiment it can be provided that the rotary gate has a circumferential wall surrounding its axis of rotation, on which the receptacle is arranged. In this case, the foot of the bobbin holder is held by components of the receptacle, which surround the foot in the radial direction on the outside.

It is preferred that the receptacle opens in the axial direction. The coil holder can then be acted upon by forces during acceleration or braking so that it is moved out of the receptacle.

The invention also relates to such a rotary gate for a sample warping machine. Such a rotary gate has the characteristics indicated above.

Fig. 1

eine Schärmaschine mit einer ersten Ausgestaltung eines Drehgatters,

Fig. 2

die Schärmaschine mit einer zweiten Ausgestaltung des Drehgatters,

Fig. 3

einen Spulenhalter in perspektivischer Darstellung,

Fig. 4

die Befestigung des Spulenhalters am Drehgatter, teilweise im Schnitt,

Fig. 5

einen Spulenhalter für eine einzelne Spule mit seiner Aufnahme, teilweise im Schnitt und

Fig. 6

den Spulenhalter nach Fig. 5 in perspektivischer Darstellung.

The invention will be described below with reference to preferred embodiments in conjunction with the drawing. Herein show:

Fig. 1

a warping machine with a first embodiment of a rotary gate,

Fig. 2

the warper with a second embodiment of the rotary gate,

Fig. 3

a bobbin holder in perspective view,

Fig. 4

the attachment of the bobbin holder on the rotary gate, partly in section,

Fig. 5

a bobbin holder for a single coil with its recording, partially in section and

Fig. 6

after the bobbin holder Fig. 5 in perspective view.

A sample warping machine 1 has a warping drum 2, on whose one end face several thread guides 3 are arranged, with the help of threads 4 can be performed around the circumference of the warping drum. The threads 4 are withdrawn from a rotary gate 5, which is rotated together with the yarn guides 3 and is accordingly arranged on a shaft 6 which carries the rotary gate 5 and the yarn guides 3.

The rotary gate 5 has a plurality of coil positions 7-10. Two coil positions 7, 8; 9, 10 are arranged one behind the other in the axial direction (relative to the axis of rotation 11 of the rotary gate). Incidentally, the coil positions 7, 9; 8, 10 uniformly distributed over the circumference of the shaft 6.

In each coil position 7-10 two coils 12, 13 are now arranged, wherein a beginning 14 of a thread 15 of the second coil 13 is connected to the end 16 of a thread 17 of the first coil 12.

Both coils 12, 13 are arranged on a coil holder 18, which in connection with the 3 and 4 will be described in more detail. The two coils 12, 13 are inclined towards each other, so that they are directed to a trigger eye 19 out. It is not necessary that the thread course of both coils 12, 13 is exactly equal to the trigger eye 19. However, a certain similarity in the course of the thread should be present in order not to let the differences in tension in the thread 17 become too great when the first spool 12 has run empty and the thread is subsequently removed from the second spool 13.

Like, for example Fig. 3 it can be seen, the coil holder 18 has a first arm 20 and a second arm 21 which forms an obtuse angle with the first arm 20. The first arm 20 carries a first reel seat 22. The second arm 21 carries a second reel seat 23. On the first reel seat 22, the first coil 12 is attached and on the second reel seat 23, the second coil 13 is attached. Both coils 12, 13 can each be held by securing means 24, 25 on the coil seats 22, 23.

The two arms 20, 21 include an obtuse angle, so that the axes of the two coils 12, 13, which are perpendicular to the arms 20, 21, are inclined towards each other.

The rotary gate 5 has two axially successively arranged support plates 26, 27, which are directed perpendicular to the axis 11. In Fig. 3 is a section of the support plate 27 can be seen, which has a receptacle 28 into which the coil holder 18 is inserted.

The receptacle 28 has seen from the warping drum 2 from the shape of a U, which is open radially inwardly. The receptacle 28 points ( Fig. 4 ) inwardly projecting flanges 29 which engage over a foot 30 of the bobbin holder 18 in the axial direction. Further, a locking pin 31 is provided, which can be pulled out with an operating knob 32 against the force of a spring, not shown, from the support plate 27. If it is not pulled out, then it snaps radially inward behind the foot 30 of the bobbin holder 18 and thus ensures against the fact that the bobbin holder 18 slides down under the action of gravity.

In operation, when centrifugal force acts on the bobbin holder 18 with the two coils 12, 13, the bobbin holder 18 is pressed radially outward and securely held therein in the receptacle 28 secured to the support plate 27. The holding is done here by positive locking.

To insert the bobbin holder 18, the rotary gate is stopped and the bobbin holder 18 is inserted into the receptacle 28. In this case, the locking pin 31 is pulled out with its actuating button 32 to release an insertion opening 33 of the receptacle 28. Thereafter, the operation button 32 is released and the locking pin 31 engages behind the foot 30 of the bobbin holder 18 a. To remove the bobbin holder 18, for example, when the coils 12, 13 have run empty, only the locking pin 31 must be pulled out with the operating knob 32. This makes the replacement of a fully loaded bobbin holder 18 very easy.

Fig. 2 shows a modified embodiment, which in essential parts of the Fig. 1 equivalent. The same and corresponding elements are therefore provided with the same reference numerals.

A significant difference lies in the fact that the coil holder 18 are not attached to the perpendicular to the axis 11 extending support wall 26, 27, but on a peripheral wall 34 which surrounds the shaft 6. The plugging the bobbin holder 18 then takes place in a substantially axial direction, so that no change in the position of the bobbin holder 18 in the rotary gate 5 can occur due to forces acting in the circumferential direction, as may occur, for example, when starting or braking the rotary gate 5.

Again, the beginning 14 of the thread 15 of the second coil 13 is connected to the end 16 of the thread 17 of the first coil 12. When the first spool 12 has run empty, the thread 17 is replaced by the thread 15 without the need for a production stop.

In the Fig. 1 to 4 coil holder 18 were shown, each carrying two coils 12, 13. The use of coil holders 18 for each two coils 12, 13 is advantageous, but not necessary. The same technique can also be used for a bobbin holder 18, which carries only one coil 12, as shown by the FIGS. 5 and 6 is shown. Same elements as in the Fig. 1 to 4 are here provided with the same reference numerals.

In the perspective view of Fig. 6 a spring 35 is indicated, which presses the locking pin 31 into engagement with the foot 30 of the bobbin holder 18. The locking pin 31 must be pulled at its operating knob 32 against the force of the spring 35 out of engagement with the foot 30 of the bobbin holder 18.

The receptacle 28 on the support wall 27 in Fig. 6 now opens not only radially inward, but mainly in the circumferential direction. It must the locking pin 31 can only absorb the forces that occur during acceleration or deceleration of the rotary gate. These forces are still manageable.

In the FIGS. 5 and 6 the bobbin holder is shown in each case with an axis or rod 35, by means of which the coil 12 is held at a certain distance from the foot 30. The specific design of the bobbin holder 18 in the region of the coil 12 can be selected depending on the particular needs present.

Claims (10)

1. Sample warping machine (1) comprising a warping drum (2), at least one yarn guide (3) which can be moved around the periphery of the warping drum (2), and a rotating creel (5) which comprises a plurality of spools (12) and is rotatable together with the yarn guide (3), the spool (12) being mounted on a spool holder (18), characterised in that the spool holder is detachably fastened in the rotating creel (5), the spool holder (18) being inserted in a retainer (28).
2. Sample warping machine according to claim 1, characterised in that the spool holder (18) cooperates with a locking pin (31), which is movable perpendicular to the insertion direction of the spool holder (18).
3. Sample warping machine according to claim 2, characterised in that the locking pin (31) is pre-tensioned in a holding position by a spring (35).
4. Sample warping machine according to any of claims 1 to 3, characterised in that the retainer (28) is U-shaped.
5. Sample warping machine according to claim 4, characterised in that the U extends perpendicular to the axis of rotation (11) of the rotating creel.
6. Sample warping machine according to claim 5, characterised in that the rotating creel (5) comprises a support plate (27) which is arranged perpendicular to the axis of rotation (11) and on which the retainer (28) is arranged.
7. Sample warping machine according to claim 6, characterised in that the retainer (28) opens radially inwards.
8. Sample warping machine according to any of claims 1 to 4, characterised in that the rotating creel (5) comprises a peripheral wall (34) which surrounds the axis of rotation (11) of said rotating creel and on which the retainer (28) is arranged.
9. Sample warping machine according to claim 8, characterised in that the retainer (28) opens in an axial direction.
10. Rotating creel (5) for a sample warping machine (1) according to any of claims 1 to 9, which comprises a plurality of spools (12), wherein the spools (12) are mounted on spool holders (18) which are detachably fastened in the rotating creel (5), wherein the spool holders (18) are each inserted in a retainer (28).

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