EP3371081B1 - Sliver-transporting apparatus and arrangement which can be formed thereby - Google Patents

Description

The invention relates to a device for transporting a sliver and an arrangement that can be formed with it.

Passive sliver transport devices are known which are designed to direct sliver supplied from a spinning preparation machine to another spinning preparation machine. The other spinning preparation machine is usually a sliver storage device like a can changer. If the can to be filled by the can changer is full, the can changer cannot work during the can change and therefore cannot pull in or process sliver. This means that the spinning preparation machine delivering the sliver would then have to be stopped. This is very disadvantageous for their overall throughput.

Therefore, these sliver transport devices have been further developed so that they are able to temporarily store sliver between the delivering spinning preparation machine and the high-mounted roll, as it were, via a height-mounted roll. Such devices are out CH 437 067 A and CH 465 453 A. known. If the can changer or depositer does not feed in sliver, the spinning preparation machine can still deliver sliver towards the transport device. Due to the lack of operation of the can changer, however, no sliver can be temporarily passed through the transport device itself. Thus, sliver material accumulates between the spinning preparation machine and the transport device. Because of the height storage of the roll, and since the spinning preparation machine also the sliver in a certain height above a floor, a certain part of the sliver between the spinning preparation machine and the roll can be temporarily stored. The spinning preparation machine can continue to work in this way, but practically only up to a maximum delivery speed of 30 m / min. This low delivery speed leads to mass fluctuations in the sliver delivered at this low speed. This can lead to an uneven yarn in the later spinning process, which is very unfavorable. For example, in the case of a card as a spinning preparation machine, the percentage of waste in the card increases due to the strong reduction in its delivery speed. I.e. the card's efficiency is drastically reduced.

The object of the invention is to overcome these disadvantages.

This object is solved by the subject matter of claims 1 and 14.

Advantageous developments of the invention are specified in the subclaims.

According to the invention, a device for transporting at least one sliver is provided. For each individual sliver, it has an associated input section, an associated output section and an associated guide section. The associated guide section comprises an associated drive section. This is set up to attack the sliver at at least one point. The guide section is also designed to guide and move the associated fiber sliver coming from the input section in the direction of the associated output section by means of the associated drive section. I.e. the transport device itself is able to move the respective sliver arriving at the associated input section in the direction of the associated output section to transport. Apart from this, the guide section is designed to receive the associated fiber sliver coming and moving from the associated input section at least in a region between the associated drive section and the associated output section with a length that is greater than a distance between this drive section and this output section. I.e. in the case of a can change, sliver can be temporarily stored until the can changer can start to lay down sliver again, this at a higher speed than the sliver speed on the transport device. As a result of the temporary storage of fiber sliver between the associated guide section and output section, an entry speed can be realized at this input section that does not only depend on the time in which a can change takes place in the can changer, but also on the temporary storage of the sliver that can be achieved within this time the transport device. This means that significantly more fiber sliver can be produced per unit of time despite the can changer being shut down. It has been found that it is possible to increase the running-in speed on the transport device, for example to 100 m / min. It has also been found that when a card is used, this minimum speed is sufficient to practically avoid the aforementioned problem of mass fluctuations in the sliver material or to keep it negligibly low. It also improves the overall throughput of the spinning preparation machine, for example in the form of a card.

The associated sliver is moved in the transport operating mode of the transport device by means of the associated drive section at a transport speed that is lower than an entry speed of the associated fiber sliver arriving at the associated input section. As a result, the length of the associated fiber sliver arranged between the associated input section and output section can be increased and thus fiber sliver can be temporarily stored, and in spite of the continued operation of said first device, for example in the form of a card.

In addition, the guide section is designed to accommodate the associated fiber sliver coming from the associated input section, also in a region between an associated output section, with a length that is greater than a first device coupled to the transport device with respect to the transport of the associated fiber sliver and the associated drive section is as a distance between this output section of the first device and this drive section. On the other hand, the guide section is designed, in a transport operating mode, to move the fiber sliver by means of the drive section at a transport speed that is lower than an infeed speed of the fiber sliver arriving at the associated input section. This means that the sliver transport device can move to the associated output section, but it does not have to be picked up there. This expansion of the transport device serves the temporary storage between the sliver transport device and the spinning preparation machine described above. Thus, even more sliver material can be temporarily stored, which allows an even higher infeed speed and, along with this, an even higher working speed of the spinning preparation machine that delivers the sliver to the input section.

In both variants, at least one guide section can be designed, in the transport operating mode, to move the associated sliver by means of the associated drive section at a transport speed which is higher than a take-off speed at which a second, coupled on the output side to the transport device in relation to the transport of the associated sliver Device transports the associated sliver away from the transport device. This causes the associated fiber sliver to be temporarily stored between the associated drive section and output section.

In each of the aforementioned transport devices, a drive section at the aforementioned at least one associated location can have an associated drive roller, which preferably interacts with an associated counter element such that the associated fiber sliver is attacked by the arrangement of the associated drive roller and associated counter element when the drive roller rotates. This ensures that the sliver material is safely gripped by means of the drive roller.

One of the at least one associated counter element that is thus present at the at least one point is preferably mounted preloaded in the direction of the associated drive roller. As a result, the associated sliver between the associated drive roller and counter element can be attacked even more reliably and can be moved better due to the rotating drive roller. This improves operational safety.

The assigned counter element is preferably formed by means of a roller. This ensures a particularly simple and gentle way to attack and move the sliver.

One of the at least one associated drive roller is preferably operatively connected to an associated drive means via a freewheel such that, at least in the transport operating mode, the associated drive means is able to set the associated drive roller in rotation. The freewheel is also arranged such that the associated drive roller can nevertheless rotate faster in the rotational drive direction than by means of the associated drive means. In this way, despite the respective rotating drive roller, the associated sliver can be moved through the transport device at a speed which is higher than the drive means driving this associated drive roller would bring about. This enables the at least one drive roller to be rotated continuously by means of the drive means, even if the can changer is currently filling a can and the spinning preparation machine is operating at a speed which is significantly higher than would be the case when changing the can, i.e. significantly more than 100 m / min. In this case, the can changer pulls the associated sliver through the transport device from the spinning preparation machine as usual. After the can change, the can changer must first remove the sliver material temporarily stored in the transport device. At this moment, the transport device is preferably not switched off but continues to run at least until no more sliver is temporarily stored in the transport device. If the transport device were switched off immediately after changing the can, this could lead to a jerk in the drive roller and thus to a sliver break. The freewheel enables the associated sliver to be pulled off by means of the can changer regardless of whether the associated drive roller is driven or not. Overall, operational reliability increases.

In all of the aforementioned transport devices, a drive section, in the transport operating mode, can be set up to attack the associated sliver at at least two of the several associated locations, and can be designed to place this sliver coming from the associated input section in an area between at least two of the multiple associated locations associated drive section with a length that is greater than a distance between these at least two associated locations. There is thus at least one additional buffer, namely between these at least two associated locations of the associated drive section. This means that even more material from the associated sliver can be buffered. This enables a longer can change and, for example, larger cans that move more slowly. Alternatively or additionally, the spinning preparation machine coupled to the associated input section can be operated as an example of the aforementioned first device at an even higher speed during the can change, which has a favorable effect on the overall throughput of the spinning preparation machine.

The distance between the associated drive section and the associated output section can preferably be changed. This makes it possible to adapt the buffer store on site depending on the local conditions. This applies in particular to the size of the room for the construction of the transport device.

Alternatively or additionally, this transport device has a respective drive roller at the at least two associated points. The speeds of the drive rollers of the associated drive section take from the associated input section in the direction of the associated output section from. This makes it possible to temporarily store the tape in the at least two areas, namely between the at least two sliver engagement points and between the associated drive section and the associated output section, in continuously increasing, preferably identical, sliver lengths, so that the risk of a sliver break is averted.

The speeds of two associated drive rollers that follow one another in the direction of movement of the sliver through the transport device are preferably in a predetermined relationship to one another. As a result, the speed of the individual drive roller does not have to be changed dynamically, but instead can be set directly by means of control measures on the basis of the speed ratio between the drive rollers and a single desired speed, which is preferably predetermined for the first and thus the fastest rotating drive roller.

In each of the aforementioned transport devices, the associated drive section at least partially and the associated output section preferably have a predetermined height above a floor section, for example in the form of a floor. This creates space for intermediate storage of the associated fiber sliver in a simple manner, namely due to the distance between the respective components of the transport device for intermediate storage and the distance to the floor. During the intermediate storage, sliver loops gradually become longer towards the floor.

At least one of the at least one associated location is preferably arranged such that it can be changed with respect to a height above the base section. I.e. the transport device according to the invention can be adapted to the local conditions, for example due to a lower ceiling height, which increases the flexibility of use.

Alternatively or additionally, the distance between the associated drive section and the associated output section can be changed, combined with the same advantages.

The invention further relates to an arrangement comprising a spinning preparation machine, one of the aforementioned transport devices, another machine and a control device. The spinning preparation machine has an output section which is designed to transfer a fiber sliver out of the spinning preparation machine to an associated one of the at least one input section of the transport device. An input section of the other machine is designed to receive at least one of the at least one associated fiber band transferred to the transport device by the spinning preparation machine from an associated output section of the transport device. This machine is also designed to interrupt or stop picking up the associated fiber sliver from the transport device when a predetermined state is present. Such a condition can be, for example, a recurring brief interruption in operation. The control device is designed to cause the drive section for this fiber band to operate in accordance with the transport operating mode when the picking up of the associated fiber band is interrupted or stopped. I.e. the control device switches the transport device into the aforementioned transport operating mode. In addition, it is possible not to use any other slivers Transport operating mode but to be transported according to the "normal" operating speed, at which no buffering takes place. This enormously improves the flexibility of use.

The control device is preferably coupled to a sensor system. The sensor system is designed to detect the interruption or stopping of the picking up of the associated fiber sliver. In the simplest case, this can be done by means of a switch in the form of a light sensor which is actuated or detected when a full can in question is conveyed out of the can changer. The transport device therefore does not have to be switched on manually or switched to the transport operating mode, this is advantageously done automatically. This reduces operating effort and increases operational safety.

The control device is preferably designed to be determined when the transport device can leave the transport operating mode in relation to the respectively associated sliver to be temporarily stored. This can be done, for example, by means of a tachometer on the drive roller closest to the associated input section. If their speed is higher than that specified by the drive means coupled to it, this is a sign that the other machine has pulled out all the temporarily stored sliver material from the transport device. In this way, the spinning preparation machine can again operate at full speed and the transport device can be switched off in relation to the associated sliver, that is to say leave the transport operating mode. This results in an automatic change between the preferably two operating modes of the transport device without manual intervention being necessary, which keeps operation and effort simple.

In both arrangements, the sensor system can be a component of the spinning preparation machine, the transport device and / or the sliver laying device, at least in sections. As a component of the sliver storage device, the associated sensor section can comprise a light sensor which detects when a can to be filled is full. As a component of the sliver storage device, the associated sensor section can also comprise light sensors which detect when the respective sliver loop between the drive section and the discharge section and, if present, between the respective locations of the drive section is virtually canceled. As a component of the spinning preparation machine, the associated sensor section can comprise a switch, by means of which the control device is supplied with energy and can thus be detected when the spinning preparation machine is working at all.

The aforementioned other machine is preferably designed as a sliver storage device. It has a processing section which is designed to deposit sliver taken up by the transport device into a storage container, such as a jug, in accordance with predetermined specifications. Such a processing section usually comprises a turntable with an integrated sliver storage tube. The predetermined state specified at the beginning comprises a change of the storage container. I.e. Such a storage container change leads to the aforementioned interruption or stopping of the sliver holder by means of the sliver storage device.

Figur 1

eine Anordnung gemäß einer ersten Ausführungsform der Erfindung, in einem ersten Zustand,

Figur 2

die Transportvorrichtung von Figur 1 in größerem Detail,

Figur 3

den Antriebsabschnitt der Transportvorrichtung von Figur 1 in größerem Detail,

Figur 4

die Transportvorrichtung von Figur 1 in einem zweiten Zustand,

Figur 5

eine Anordnung gemäß einer zweiten Ausführungsform der Erfindung, im Ausschnitt, und

Figur 6

eine schematische Ansicht der Transportvorrichtung von Figur 5.

Further features and advantages of the invention result from the following description of preferred embodiments. Show it:

Figure 1

an arrangement according to a first embodiment of the invention, in a first state,

Figure 2

the transport device of Figure 1 in greater detail,

Figure 3

the drive section of the transport device of Figure 1 in greater detail,

Figure 4

the transport device of Figure 1 in a second state,

Figure 5

an arrangement according to a second embodiment of the invention, in section, and

Figure 6

5 shows a schematic view of the transport device from FIG. 5.

Figure 1 shows an arrangement 1 according to a first embodiment of the invention and in a first state. The arrangement 1 essentially consists of a card 10 as a spinning preparation machine, a transport device 30 described later and a can changer 20.

The card 10 has a housing 11 which contains the processing section with a carding drum, a carding card and the like. Furthermore, an operating terminal 12 is shown that enables the card 10 to be operated. in the In the area of a sliver outlet of the card 10 there is a band ring 13 through which a sliver 2 is guided out of the card 10.

As can be seen, the sliver 2 forms a loop 3 in the area between the sliver ring 13 and the transport device 30. Starting from the ring 13, the sliver 2 is guided through the transport device 30 to a roll 21 as an input section of the can changer 20. The roller 21 guides the sliver 2, which runs horizontally here, vertically downward in the direction of a sliver laying system enclosed by a housing 22, which is usually formed by means of a driven turntable. The housing 22 is attached to a table 23 which is open in the area of the housing 22.

The table 23 is raised by means of feet 24 in relation to a floor (not shown). This creates a space below the table 23 for a jug, not shown, so that the sliver 2 can be loaded from above.

Figure 2 shows the transport device 30 of FIG Figure 1 in greater detail. Furthermore, in Figure 2 only the above-described roll 21 of the can changer 20 and the band ring 13 of the card 10 are shown.

As can be seen, the sliver 2, coming from the sliver ring 13, runs here essentially vertically upwards over the loop 3 in the direction of a drive section 40 of the transport device 30.

The drive section 40 comprises a drive roller 41 and a roller 42, which is preferably preloaded in the direction of the drive roller 41. I.e. the roller 42 is against an opposite contact surface of the Drive roller 41 pushed with the sliver 2. In the example shown, this is done by means of a lever 43, on one end of which the roller 42 is fastened, and on the other end is pivotally mounted on an axis (not designated), on the front end of which a nut 44 is screwed on. Here the pretension occurs due to the own weight of the roller 42. A leg spring can preferably also be arranged, which is supported at one end on an edge of the lever 43, for example pointing upwards here, and at the other end on a plate 45 to which the axle is attached.

The sliver 2 is guided through an intermediate space between the rollers 41, 42 in the direction of a roller 31 of the transport device 30. Thereafter, the sliver 2 is guided to the aforementioned roll 21 and then entered the other can changer 20, not shown.

The drive section 40 is designed, for example, in a modular manner and also includes, by way of example, a housing 46, to the front of which the plate 45 is fastened or molded. A drive motor 47 is seated in the housing 46 and is operatively connected to the drive roller 41 in a driving manner. In the example shown, this is done by means of a shaft which penetrates the plate 45. At the free end of the shaft protruding from the plate 45 on its side facing away from the motor 47, the drive roller 41 is preferably operatively connected in the drive direction via a freewheel (not shown). The drive direction is, for example, a rotation of the drive roller 41 counterclockwise, so that a rotation of the drive roller 41 in connection with the corresponding roller 42 leads to the fact that the sliver 2 moves via the ring 13 away from the card 10, not shown, in the direction of the roller 21 becomes. To record or to attack the sliver 2 by means of the rollers 41, 42, for example the roller 42 is preferably provided with a support, for example made of rubber.

As can also be seen, the sliver 2, coming from the ring 13, is guided over a band ring 32 of the transport device 30. The band ring 32 is located between the ring 13 and the drive section 40, as seen in the direction of movement of the fiber band 2.

Both band rings 13, 32 are preferably designed as metal rings which serve to guide the fiber band 2.

The drive section 40 is attached, for example, to a column 33, which is attached, for example, to a cable duct 35 attached to the floor via a base 34. Power is supplied to the drive section 40 via the cable duct 35, the base 34 and the column 33. A preferably pivotable arm 36 is arranged at an upper end of the column 33, and the roller 31 is rotatably arranged at its free end.

Figure 3 shows the drive section 40 of the transport device 30 of Figure 1 in greater detail.

It can be seen particularly well here how the sliver 2 is guided through the ring 32 and through the roller arrangement 41, 42 in the direction of the roller 31, not shown. Lines 48, which serve to supply energy to the motor 47, can also be seen here. Further lines can be provided which couple the motor 47 to a control device which, as will be explained in more detail later, can be coupled to a sensor system.

If the card 10 is operating normally and there is an as yet not fully filled can as a storage container below the table 23, the drive section 40 is preferably not operated. The can changer 20 pulls in the sliver 2 via the roll 21, which is guided over the ring arrangement 13, 32 and the roll 31. Alternatively, the drive roller 41 can be operated at a speed which corresponds to a running-in speed of the can changer 20 at which the sliver 2 is drawn into the can changer 20. This eliminates the risk that a sliver break can occur due to the sliver deflection.

If the can below the table 23 is filled, the can changer 20 must interrupt or stop the laying of the sliver 2 and thus the running in of the sliver 2 via the roller 21 into the housing 22 until the filled can is replaced by a new, empty can .

A certain amount of time is required for this process. Card 10 should not actually work during this time. This only leads to very unsteady operation of the card 10, in particular due to the frequent braking to a standstill and re-acceleration of the relatively large carding drum.

In order to avoid this, it is provided that the transport device 30 can be operated in such a way that sliver 2 can be temporarily stored between the roller arrangement 41, 42 and the roller 31. For this purpose, the drive roller 41 continues to be operated. It is provided that the card 10 is braked to a speed at which a minimum of mass fluctuations occurs in the sliver 2 produced. The delivery speed of the card 10 is preferably at least 100 m / min.

In order not to let the sliver 2 produced thereby run anywhere in an uncontrolled manner, the drive roller 41 is operated at a speed which is equal to or less than an output speed of the card 10 on the ring 13. This operating mode of the transport device 30 is referred to as a transport operating mode in the context of this application.

Figure 4 shows the transport device 30 of FIG Figure 1 in a second state achievable by means of this mode.

This state is therefore reached when the drive section 40 has been operated in the transport operating mode for the maximum possible period of time. As can be seen, the loop 3 is very close to the floor (not shown here), so it has increased. In order to achieve this, the drive roller 41 was operated at a speed which is lower than the output speed of the card 10 on the ring 13. Furthermore, a second loop 4 has now formed between the drive section 40 or its roller arrangement 41, 42 and the roller 31, which likewise ends just above the floor. Assuming that the height difference of the loop 3 between Figure 2 and Figure 4 corresponds approximately to half the height of the ring 13 above the floor, the length of the sliver 2 between the ring 13 and the ring 32 is approximately ¾ the length of the sliver 2 between the drive roller 41 and the roller 31. Im in Figure 2 State shown is the length of the sliver 2 between the ring 13 and ring 32, for example equal to the height of the drive roller 41 above the floor.

This means that the additional sliver intake possible by means of the transport device 30, for example twice the height of the drive roller 41 above the floor plus the height of the ring 13 above the Floor corresponds. If the ring 13 is now halfway up in relation to the height of the drive roller 41, this means that an additional sliver length which can be picked up by means of the transport device 30 corresponds to approximately 2½ times the height of the ring 13 above the floor.

Furthermore, in order to simplify the explanation, it is assumed that the height of the drive roller 41 above the floor is 2 m. The maximum length of the sliver that can be taken up is thus 7 m.

If the delivery speed v _{K of} the card 10 of 100 m / min for the time of the transport operating mode is used as a basis, the following results: $$\mathrm{t}=\frac{7\mathrm{m}}{100\mathrm{m}/\min }=\frac{7\mathrm{m}}{100\mathrm{m}/60\mathrm{s}}=4.2\mathrm{s}\stackrel{\wedge}{=}0.07\min .$$

Due to the additional sliver length of 4 m to be transported for the area between the rollers 41, 31, the corresponding sliver speed v ₁ between the rings 13, 32 results: $${\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="imgf0001.png,imgf0003.png"\; state="\{\{state\}\}">v</figure-callout>}}_1=\frac{\mathrm{4th}\mathrm{m}}{0.07\min }\approx 57.14\mathrm{m}/\min .$$

If it is now assumed that the drive roller 41 has a diameter of 20 cm, the following results for its speed: $$\mathrm{n}=\frac{400\mathrm{m}/7\mathrm{<figure-callout\; id="41"\; label="min\; u"\; filenames="imgf0002.png,imgf0003.png"\; state="\{\{state\}\}">min\; </figure-callout>}}{{\mathrm{u}}_{}}=\frac{400\mathrm{m}/7\min }{\mathrm{\pi }\cdot 0.2\mathrm{m}}\approx 90.95{\min }^{-1}.$$

The value u ₄₁ represents the circumference of the drive roller 41 in the contact area with the sliver 2.

If one now assumes that the drive section 40 is also operated in normal can filling operation immediately after the can change, this results in a speed of: $$\frac{100\mathrm{m}/\min }{\mathrm{\pi }\cdot 0.2\mathrm{m}}\approx 159{\min }^{-1}.$$

This results in a speed difference of approximately 68.1 min ^-1 . I.e. when changing from the normal can filling operation of the arrangement 1 to the can changing operation or the aforementioned transport operating mode, the speed of the drive roller 41 is reduced by this 68.1 min ^-1 . This lowering does not have to be abrupt, but can take place continuously in order to avoid or largely avoid the risk of a sliver break.

Figure 5 schematically shows an arrangement 1 according to a second embodiment of the invention, in detail.

This arrangement 1 in turn comprises, by way of example, a card 10, a transport device 30 and a can changer 20, which is not shown here.

In contrast to the first embodiment of the invention, the transport device 30 comprises two drive rollers 41, 41 in the example shown. For the sake of simplicity, the other components such as the holder for the drive rollers 41, 41, their drive and any counter rollers 42 are not shown. Furthermore, the sliver 2 is shown, which in the example shown has three loops 3-5. The first loop 3 consists, as in the first embodiment, between the card 10 and the drive roller facing in the direction of movement of the sliver 2 41, which in Figure 5 is arranged on the right. The second loop 4 is formed between the drive roller 41, seen here on the left in the direction of movement of the sliver 2, facing away from the card 10, and the roller 31 and thus corresponds to the loop 4 of FIG Figure 4 . The third loop 5 is formed between the two drive rollers 41, 41 here.

With the aid of the two drive rollers 41, 41, it is now possible to form two additional loops 4, 5 apart from the loop 3 which is present anyway. As a result, even more sliver material can be temporarily stored.

Figure 6 shows a schematic view with regard to the arrangement 1 of FIG Figure 5 .

The rollers 31, 41, 41 are now indicated by means of corner points of a serrated line representing the sliver 2. The sliver 2 has a height h _K in the area of the exit of the card 10, ie in the area of the ring 13 according to the first embodiment of the invention, up to the lower end of the loop 3. The other loops 4, 5 accordingly have a height hw from the uppermost contact point of the fiber sliver 2 on the respective pair of rollers 41, 41 or 31, 41 to just above the floor 6. Accordingly, these two loops 4, 5 preferably have identical ones Heights h _W. For the sake of simplicity, the total length of the interim storage sliver material is l ₁ + 5 · l ₂ .

For example, the same amounts for the heights h _W and h _{K are} used here as in the first embodiment of the invention. The maximum length of the sliver that can be taken up is thus approximately 11 m.

If the speed v _K of 100 m / min is taken as a basis, the following results for the time of the transport operating mode: $$\mathrm{t}=\frac{11\mathrm{m}}{100\mathrm{m}/\min }=\frac{11\mathrm{m}}{100\mathrm{m}/60\mathrm{s}}=6.6\mathrm{s}\stackrel{\wedge}{=}0.11\min .$$

Due to the sliver length of 4 m to be transported for the area between the rolls 41, 31, the corresponding sliver speed v ₁ between the two rolls 41, 41 results in: $${\mathrm{<figure-callout\; id="1"\; label="v"\; filenames="imgf0001.png,imgf0003.png"\; state="\{\{state\}\}">v</figure-callout>}}_1=\frac{\mathrm{4th}\mathrm{m}}{0.11\min }\approx 36.36\mathrm{m}/\min .$$

If it is now assumed that the left drive roller 41 provided for this has a diameter of 20 cm, the following results for its speed: $$\mathrm{n}=\frac{{\mathrm{v}}_1}{{\mathrm{<figure-callout\; id="41"\; label="u"\; filenames="imgf0002.png,imgf0003.png"\; state="\{\{state\}\}">u</figure-callout>}}_{41}}=\frac{\mathrm{4th}\mathrm{m}/0.11\min }{\mathrm{\pi }\cdot 0.2\mathrm{m}}\approx 57.9{\min }^{-1}.$$

At the same time, the right drive roller 41 must transport the sliver length that can be buffered both between the rollers 41, 31 and between the rollers 41, 41. I.e. the right drive roller 41 has to cope with a sliver length of 4 · l ₂ , that is 8 m and thus twice as much as the left drive roller 41. This results in a drive speed 41 of twice as high for the other drive roller 41 of about 115.8 min ^-1 .

If the drive section 40 is also operated immediately after the can change in normal can filling operation, the result for both rollers 41, 41, as in the first embodiment, is: $$\mathrm{n}=\frac{100\mathrm{m}/\min }{\mathrm{\pi }\cdot 0.2\mathrm{m}}\approx 159{\min }^{-1}.$$

This results in a speed difference of approximately 43.2 min ⁻¹ for the right drive roller 41, that is less than for the drive roller 41 of the first embodiment of the invention. I.e. when changing from the normal can filling operation of the arrangement 1 to the can changing operation or the aforementioned transport operating mode, the speed of this drive roller 41 is only reduced by this 43.2 min ^-1 , which is more advantageous. Again, this lowering does not have to be abrupt.

A speed difference of approximately 101.1 min ^-1 applies to the second drive roller 41. While this is a fairly large difference, it is not a major problem due to the additional loop 5.

The invention is not restricted to the prescribed embodiments.

The number and the distances of the drive rollers 31, 41, 41 to one another, the distance between the card 10 and the facing drive roller 41 and the distance between the can changer 20 and the facing drive roller 41 can vary. The same applies to the respective heights of the rollers 31, 41 or the sliver exit 13 of the card 10.

Apart from this, the card 10 can be replaced by any other spinning preparation machine. The same applies to the can changer 20, which can be replaced, for example, by another spinning preparation machine.

If a plurality of drive rollers 41 are provided, these can also be operated in the transport operating mode in such a way that only the last drive roller 41 in the direction of sliver movement is operated. Then the last one Loop formed, this drive roller 41 is switched off, and the next drive roller 41 in the direction opposite to the sliver movement direction is operated until the next loop is created, etc.

Instead of a respective counter roller 42, an element with a preferably polished sliding surface can be provided in at least one drive roller 41, along which the associated drive roller 41 moves the sliver 2.

The column 33 can also be suspended from a ceiling. Instead of the column 33 and the bracket 36, a support frame can also be provided, which is supported in two places on the floor or suspended from a ceiling.

In the examples shown, spaces are used as the sliver intermediate storage, which are delimited by two elements 13, 41 or 41, 31 and the floor 6 in each case. I.e. the sliver loops 3 - 5 used for temporary storage hang in free space. This results in a forced stretching of the sliver material in these rooms due to the weight of the sliver 2. This means that sliver does not get on the floor 6, for example in the case of FIG Figure 4 Left sliver loop, the drive roller 41 is operated at a speed which is slightly higher than without taking into account the sliver stretch. According to Figure 5 it thus follows that when the two drive rollers 41, 41 rotate at the same time, the left one of them must rotate at somewhat higher than half the speed than the right one.

The elements 40, 31 can be arranged to be partially or entirely adjustable in height. This can be achieved by, for example, the Drive section 40 is slidably mounted on the rod 33. The same applies to the roller 31, but now at the left end of the arm 36. The arm 36 can also be adjustable in length, so that the distance between the elements 40, 31 is variable. In both cases, the buffer can be adapted to the local conditions.

The transport device 30 can also be designed to be able to transport a plurality of slivers 2 and, if necessary, also to store them temporarily. For the transport of a plurality of fiber slivers 2, the examples shown have been modified such that a separate roller arrangement 41 (14, 41,), 42; 31 is provided. The thus several drive rollers 41 can be driven by their own drive means such as a motor. However, they can also be combined into groups, each group having its own drive means. The drive coupling of the plurality of drive rollers with the associated one drive means can be realized by means of gears and / or by attaching several rollers to a respective single shaft.

This solution enables the transport of slivers that have been produced, for example, by means of a double draw frame. A double transport device which can be formed in this way can thus be connected between the double section as a single spinning preparation machine and the necessary two can changers.

If the drive rollers 41 for the two slivers 2 can also be operated independently, for example by having their own drive means, a double section can also be operated such that only one sliver is produced.

It is thus possible in a simple manner to couple a number of spinning preparation machines to their associated sliver laying devices, such as can changers, via a single transport device 30.

As a result, the invention provides a universally usable transport device, which makes it possible to maintain a spinning preparation machine's operation at a relatively high sliver delivery speed to such an extent that mass fluctuations in the sliver material do not occur at all or only to an insignificant extent, even if an output side is operatively connected to the spinning preparation machine , other machine is temporarily stopped.

Reference list

1

arrangement

2nd

Sliver

3rd

loop

4th

loop

5

loop

6

floor

10th

teasel

11

casing

12th

Operator terminal

13

Band ring

20th

Can changer

21

role

22

casing

23

table

24th

Pedestal

30th

Transport device

31

role

32

Band ring

33

pillar

34

Stand base

35

Cabel Canal

36

boom

40

Drive section

41

Drive roller

42

Pinch roller

43

lever

44

mother

45

Retaining plate

46

casing

47

engine

48

management

a

distance

h _K , h _W

height

l ₁ , l ₂

length

Claims (18)

1. A transporting device (30) for transporting at least one fibre band (2), including for each associated fibre band (2) to be transported,

   • one associated input section (32),

   • one associated output section (31), and

   • one associated guiding section,

   - including an associated drive section (40), adapted to grip the associated fibre band (2) at least at one location, and

   - formed

   • to guide and to move the associated fibre band (2) by means of the associated drive section from the associated input section (32) to the associated output section (31),

   • to receive the associated fibre band (2) coming from the associated input section (32),

   - at least in one area between the associated drive section (40) and the associated output section (31) with a length, which is larger than a distance between the associated drive section (40) and the associated output section (31), and

   - to receive it in an area between an associated output section (13) of a first device (10), which at the entry side is coupled to the transport device (30) with regard to the transport of the associated fibre band (2), and the associated drive section (40) with a length, which is larger than a distance between the associated output section (13) and the associated drive section (40), and

   - in the transport operating mode, to move the associated fibre band (2) by means of the associated drive section (40) at a transport speed, which is lower than an entry speed of the associated fibre band (2) arriving at the associated input section (32).
2. The transport device (30) according to claim 1, wherein at least one of the at least one guiding section, in the transport operating mode, is formed to move the associated fibre band (2) by means of the associated drive section (40) at a transport speed, which is higher than a delivery speed, at which a second device (20), which, at the exit side, is coupled to the transport device (30) with regard to the transport of the associated fibre band (2), transports the associated fibre band (2) away from the transport device (30).
3. The transport device (30) according to any of the preceding claims, wherein at least one of the at least one drive section (40) at the at least one associated location has a respectively associated drive roller (41), which interacts with an assigned counter-element (42) in such a manner that, upon rotating of the associated drive roller (41), the drive roller (41) associated to the arrangement and assigned counter-element (42) grip the associated fibre band (2).
4. The transport device (30) according to claim 3, wherein one of the at least one assigned counter-element (42) is supported in a pre-tensioned manner at the associated at least one location in the direction of the associated drive roller (41).
5. The transport device (30) according to claim 3 or 4, wherein at least one of the at least one assigned counter-element (42) is formed by means of a roller (42).
6. The transport device (30) according to any of the claims 3 to 5, wherein at least one of the at least one drive roller (41) is operatively connected to a drive means (47) in such a manner via a free wheel that at least in the transport operating mode

   • the associated drive means (47) is able to entrain the drive roller (41) into rotation, and

   • a faster rotating of the at least one drive roller (41) is realized than by means of the associated drive means (47).
7. The transport device (30) according to any of the preceding claims, wherein the associated drive section (40) in the transport operating mode

   • is adapted to grip at least one fibre band (2) at least at two of the at least one associated location, and

   • is formed to receive the associated fibre band (2) coming from the input section (32) in an area between at least one two of the at least two associated locations of the associated drive section (40) with a length, which is larger than a distance between said at least two associated locations.
8. The transport device (30) according to claim 7, wherein the distance is changeable between the associated drive section (40) and the associated output section (31).
9. The transport device (30) according to claim 7 or 8, wherein

   • wherein the transport device (30), at the at least two associated locations, is provided with a respective drive roller (41), and

   • in transport operating mode, the rotational speeds of the respective drive rollers (41) decrease from the associated input section (32) in the direction of the associated output section (31).
10. The transport device (30) according to claim 9, wherein the rotational speeds of two associated drive rollers (41), which directly follow each other seen in the direction of movement of the fibre band (2) through the transport device (30), are at a predetermined ratio to each other.
11. The transport device (30) according to any of the preceding claims, wherein the associated drive section (40) at least partially and the output section (31) have a predetermined height (hw) above a floor section (6).
12. The transport device (30) according to claim 11, wherein at least one of the at least one associated location is disposed changeable with regard to a height above the floor section (6).
13. The transport device (30) according to any of the preceding claims, wherein the distance is changeable between the associated drive section (40) and the associated output section (31).
14. An arrangement (1), comprising

    • a transport device (30) according to any of the preceding claims,

    • a spinning preparation machine (10), including an output section (13), formed to deliver at least one fibre band (2) out of the spinning preparation machine (10) to an associated one of the at least one input section (21) of the transport device (30),

    • one other machine (20),

    - in which an input section (21) of the other machine (20) is formed to receive at least one of the at least one fibre band (2), which is delivered by the spinning preparation machine (10) to the transport device (30), from an associated output section (31) of the transport device (30), and

    - the associated other machine (20) is formed, when a predetermined condition is given, to interrupt, respectively to stop the reception of at least one of the at least one fibre band (2) to be received, as well as

    • a control apparatus, which is formed, when the reception of the at least one fibre band (2) is interrupted, respectively stopped, to cause the drive section (40) to operate for said fibre band (2) according to the transport operating mode.
15. The arrangement (1) according to claim 14, wherein the control apparatus is coupled to a sensor system, which is adapted to detect when the reception of the associated fibre band (2) is interrupted, respectively stopped.
16. The arrangement (1) according to claim 15, wherein furthermore the control apparatus is formed

    • to determine, when the transport device (30) at the associated fibre band (2) can abandon the transport operating mode, and

    • when it was determined that the transport operating mode can be abandoned, to end the transport operating mode of the transport device (30) for the associated fibre band (2).
17. The arrangement (1) according to claim 15 or 16, wherein the sensor system, at least in sections, is a component of the spinning preparation machine (10), of the transport device (30) and/or of the other machine (20).
18. The arrangement (1) according to any of the claims 14 to 17, wherein the other machine (20) is formed as a fibre band coiling device, wherein

    • the treatment section of the other machine (20) is formed to coil a received fibre band (2) into an associated coiler receptacle according to predetermined specifications, and

    • the predetermined condition comprises a change of the associated coiler receptacle.

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