JP5393966B2 - Spinning preparation machine and spinning preparation machine - Google Patents

Description

The invention relates to a sliver can according to the preamble of claim 1 and, in particular, a retractable frame or card for a fiber sliver arrangement spinning preparation machine fed at a supply rate identifiable by a feeding device to the spinning preparation machine according to the introduction of claim 17 Relates to a device for:

The arrangement of fiber slivers supplied at a identifiable supply rate by means of a supply device to the sliver can with the aid of this general type device is known from the state of the art.

The placed fiber sliver passes through a sliver duct associated with a rotary table that rotates about a vertical axis; the inlet opening to the sliver duct is concentric with the rotary axis, but the outlet opening is eccentric with respect to the rotary axis Is done. Sliver cans opening to place the sliver is installed to face the direction of the turntable, comprising a sliver cans supporting device so as to hold the sliver cans to be filled. Further, designing the sliver cans supporting device to receive a periodic motion while the sliver cans are filled. Here, "cyclic motion" of sliver cans rotates sliver cans, and / or moving means to return to periodically its initial position. This type of movement of the sliver cans is different from the movement of the sliver cans at the time of the sliver cans exchange. The cyclic motion of rotation and sliver cans rotary table, the outlet opening of the sliver duct draws a cycloid path to sliver cans.

Now, the rotary table speed needs to be matched to the supply speed so that the fiber sliver can be placed in the sliver can in a cycloid pattern. It is desirable to arrange the sliver in a cycloidal shape because it allows the can to be filled uniformly and the fiber sliver to be easily pulled out of the can later.

Therefore, depending on the supply speed, the base speed is specified, set according to the rotation of the rotary table, and maintained until the supply speed changes. Only when the feed rate changes, the base rate is adjusted according to either a linear or non-linear characteristic curve. The specific curve itself is usually only corrected if the sliver placement is found to be incorrect when changing batches or changing placement dimensions. However, during continuous fiber sliver placement, the specific curve once identified is continuously tracked so that the actual speed of the rotary table always corresponds to the base speed.

As a general rule, the sliver fibers being placed contain particles that are only partially bonded to the internal structure of the fiber sliver . For example, such particles are short dust fibers or particles. As a result of the forces acting on the continuous fiber sliver when placed by a typical normal type device, some of these particles separate from the fiber sliver structure, and these separated particles are loosely bonded to the fiber sliver. It is only transported up. The resulting drawback is that particles that have now separated and again separated from the fiber sliver accumulate on the inner wall of the sliver duct. This collection of particles tends to grow to a certain size as the device continues to operate and then tends to detach from the inner wall as individual particles bind. When changing the sliver can where the fiber sliver is being placed, the particle mass often detaches. These particle clumps (known as “mouses”) fall into the sliver can, which contaminates the fiber sliver entering it. This arrives at a problem with further processing of the fiber sliver .

The accumulation of particles on the inner wall of the sliver duct damages the fiber sliver which is placed at a particularly fast and very fast placement speed. For example, particle accumulation may result in the sliver being pulled incorrectly or degrading the degree of fiber alignment .

The object of the present invention is therefore to overcome the above drawbacks and to prevent the formation of so-called mice, in particular, so that high-quality fiber slivers can be placed safely and softly at fast, very fast speeds (especially over 1000 m / min). To supply spinning preparation machines.

This task is accomplished with an apparatus and spinning preparation machine having the features of the independent claims.

The present invention provides a temporary drop at the rotary table speed compared to a specific base speed, in which some of the loosened particles from the fiber sliver are removed before they are combined to clean the sliver duct forming a particle mass. Admit that it has an effect. It temporary reduction of the rotary table speed reaches the short-term reduction in the length direction tension in the fiber sliver, thereby cleaning effect occurs because it is carried out to reach the short-term increase of the fiber sliver diameter. As a result, the inner wall of the sliver duct is all polished by the fiber sliver as it runs.

Surprisingly, it has been found that the desired cleaning effect can be achieved even with a slight decrease in rotary table speed associated with a very short period of time. In this connection, it has also been found that a reduction in rotary table speed does not result in either damage to the fiber sliver or disruption of the cycloidal arrangement.

In order to carry out this new idea, the device according to the invention features a drive system for a turntable which is constructed so as to also reduce the speed of the turntable according to the identifiable shape. Here, while the fiber sliver arrangement on the filled sliver can continues, the rotary table speed is decreased.
The rotary table is driven at a specific base speed before and after the speed reduction.

By simply interrupting the rotary table drive, the rotary table speed can be temporarily reduced by a simple method. For example, this interruption is performed by turning off the supply voltage to the motor that is driven for a short time. It is likewise possible to mechanically disconnect the rotary table from the drive motor for a suitable period. This attempt avoids the possibility that the motor will brake the rotary table too suddenly when the drive is interrupted. In this case, the shape specifies the timing and period of drive interruption while the arrangement continues. In this case, therefore, it consists of a drive interruption shape.

However, a temporary reduction of the turntable speed can also be achieved by controlling and / or adjusting the drive speed and thus the turntable speed. Therefore, such a shape is called a velocity shape.

It is conceivable to start the reduction of the rotary table speed and execute it manually, but for the automatic control of the rotary table speed according to the specific speed shape and / or the automatic of the rotary table drive according to the drive interruption shape. Includes a control unit for temporary suspension. This type of control device is preferably implemented as an electronic control device.

For data exchange, a control device can preferably be connected to the machine control device on the spinning preparation machine. This makes it possible, for example, to activate the control device via the actuating element of the machine control device. In this case, the controller need not incorporate an actuator. It is also conceivable that the control device can be fully integrated into the machine control device. This further reduces hardware costs.

It is particularly preferred if a storage device in which at least one predetermined said speed shape and / or at least one drive interruption shape is stored is associated with the control device. This simplifies the operation of the control device because it is possible to omit troublesome input of parameters for reducing the speed of the rotary table such as the amount of reduction, the duration of reduction, the frequency of reduction, etc. The desired speed shape or drive interruption shape only needs to be read from the memory and activated. It is particularly advantageous here if a very large number of shapes to be read and activated by special circumstances are stored. It is possible, for example, to retain a particularly deformed shape for different fiber slivers , different rotary tables and / or different sliver cans.

It is practically possible to specify the rotary table speed and / or the suspension of the rotary table drive depending on the time, but the shape depends on the rotary table speed and / or the length of the conveying fiber sliver. Anyway, it is preferable to specify a temporary interruption of the rotary table drive. The reason for this is that the amount of loose particles increases with the length of the conveying sliver . It is also possible to consider the fact that the amount of loosening particles increases as the feed rate increases, so it can be considered both for the time and the length of the conveyed fiber sliver to be considered.

For a given shape, if the maximum reduction of the rotary table speed is set for a specific base speed at the time involved, the desired cleaning effect is achieved without causing damage to the fiber sliver or causing the fiber sliver to jam in the sliver duct To do.

It is particularly preferred if the shape comprises a repeating sequence. This simplifies the shape specification because only the parameters describing the sequence need be given. At the same time, the shape can be used for any desired length of time.

Preferably, such a sequence in which the first segment generates a base speed and the second segment generates a turntable speed reduction is comprised of a first segment and a second segment. As a result, this ensures a shape that can be easily identified, thereby achieving the desired cleaning effect.

In this case, it is preferable to arrange the first segment so as to convey a fiber sliver of 300 m or less, preferably 200 m or less, particularly preferably 150 m or less at that time. Once the first segment is identified in this way, then only a small amount of particles will loosen from the fiber sliver in the meantime, so that the next drop is small and short in order to provide the necessary cleaning effect.

In order to avoid disturbance in the arrangement of the cycloid pattern, it is preferable to specify the second segment so that a fiber sliver of 5 m or less, preferably 4 m or less, particularly preferably 3 m or less is conveyed between the segments.

In a preferred implementation, the drive system features a clutch that is controlled by a controller. The controllable clutch is designed to easily separate the rotary table from the drive motor. The rotary table speed can be easily reduced by simply releasing the clutch. The moment of the rotary table keeps it rotating at a reduced speed. After the specifiable time or when a specific turntable speed is reached, the clutch is re-engaged so that the turntable returns to rotation at the base speed.

In another preferred implementation, the drive system incorporates a gearbox with a controllable transmission ratio. The controller can control the transmission ratio. By simply changing the transmission ratio, the speed of the rotary table can be easily reduced.

The controllable transmission is preferably a traction device with a controllable transmission ratio. For example, it includes a flat belt drive with a conical pulley, or a V-belt drive with a pulley whose effective diameter can be controlled. In order to be able to change the transmission ratio, the flat belt drive has at least one conical pulley on which the flat belt can be moved axially. For this reason, the V-belt drive has a pulley on which the two running surfaces for the V-belt can be displaced in the axial direction.

In a further embodiment, the controllable transmission incorporates a differential gear whose support is connected to a brake that can be controlled by a control device or an auxiliary motor controlled by the control device. The support portion holds the wheels that rotate within the differential gear. When the rotary table is driven at its base speed, the support is held by a brake or stationary auxiliary gear, so that the differential gear operates like a stationary transmission. In order to reduce the speed of the rotary table, the brake is released or the auxiliary motor is switched on. In any case, the support starts to rotate, and therefore the speed of the rotary table decreases.

In another preferred embodiment, the drive system is a rotary table dedicated drive. “Dedicated drive” here means a drive that does not have a mechanical coupling to other drive elements, for example comprising a feeding device or a rotary table. The dedicated drive preferably includes an electric motor whose speed can be controlled by a controller. This is connected to the rotary table via a gear with a fixed transmission ratio.

The device according to the invention can be designed to fill round or rectangular cans. In the first case, as sliver cans is rotated, if it is designed to provide rotational movement to the sliver cans, which are preferred. In the second case, in contrast, it is preferred if it is configured to provide an oscillating movement to the sliver can. The oscillating movement is also called a transverse movement. Motion consists of rotation or movement and oscillation. After some time, the sliver can returns to its original position, so it is a periodic motion. Here, the term “original position” refers to both the position and orientation of the sliver can.

The spinning preparation machine according to the invention comprises at least one device according to the invention. The benefits described are obtained.

FIG. 1 shows a schematic side view of a pull-in frame 1 as an example of a spinning preparation machine 1. The fiber slivers FB1, FB2, FB3, FB4, FB5 and FB6 in front of the retracting frame 1 pass through the supply stand 2, the intake roller unit 3, the intake sensor unit 4 and the pulling system 5 together in the LR movement direction. . The fiber slivers FB1, FB2, FB3, FB4, FB5, and FB6 are then combined via a supply device 6 to form a single compact fiber sliver FB. They then pass to the device 7 at the specified feed rate LG, thereby placing the fiber sliver FB in the sliver can K.

Supply stand 2 to be displayed only schematically draws the sliver cans K1 installed by the frame 1 pulls the first fiber sliver FB1 in front of the machine, and sliver cans placed a second fiber sliver FB2 at a position offset A first supply stand roller 2a arranged so as to be pulled out from K2 is incorporated. Since the third sliver cans K3 draw a third fiber slivers FB3, and the fourth sliver cans K4 to derive the fourth sliver fibers, comprising a second supply stand roller 2b. The fifth fiber sliver FB5 and the sixth fiber sliver FB6 are also pulled out by separate supply stand rollers (not shown) from the sliver cans (not shown). The entire supply stand 2 is designed so that six fiber slivers are simultaneously supplied to the intake roller unit 3. However, this is to be understood as an example only, since there are different numbers of sliver cans that supply fiber sliver .

The supply stand 2 can also be designed to accept a fiber sliver entering directly from the traveling card or a number of entering fiber slivers from each traveling card.

References to fiber slivers FB1, FB2, FB3, FB4, FB5 and FB6 below should not be construed as excluding the possibility of actually including only one fiber sliver or other multiple fiber slivers .

Incoming fiber sliver FB1, FB2, FB3, FB4, FB5 and FB6 are conveyed from supply stand 2 to intake roller unit 3 by a sliver conveying device (not shown). This includes three intake rollers 3a, 3b, 3ab ′, ie its contact with the first drive lower intake roller 3a, the second drive lower intake roller 3b and the incoming fiber sliver FB1, FB2, FB3, FB4, FB5 and FB6. As a result, the idle load roller 3ab ′ moves.

The fiber sliver FB1, FB2, FB3, FB4, FB5 and FB6 are conveyed from the intake roller 3 to the intake sensor unit 4 by an intake guide (not shown). This incorporates a pair of sensing rollers 4a, 4a 'composed of a sensing roller 4a on a fixed bearing and a movable sensing roller 4a'. The sensing roller 4a on the fixed bearing and the sensing roller 4a ′ on the movable bearing both rotate about their vertical axes, but are displayed rotated 90 ° to represent them on the sketch. The sensing rollers 4a and 4a ′ are also driven.

Using the inlet sensor unit 4, the total weight per unit length of the fiber slivers FB1, FB2, FB3, FB4, FB5 and FB6 passing through it is measured for each segment. Individually measured sections usually have a length of a few mm. For each measurement segment, the inlet sensor 4 generates a measurement value MW. The measured value MW is used in particular for adjusting the pull-in frame 1.

The pulling system 5 comprises the set of intake rollers 5a, 5a ′, the set of central rollers 5b, 5b ′ and the set of discharge rollers 5c, 5c ′, 5c ″. The rotational speed is the direction of movement LR from one set of rollers. The lower rollers 5a, 5b, 5c of the roller sets 5a, 5a ′; 5b, 5b ′; 5c, 5c ′, 5c ″ are driven so as to increase for each set. As a result, the preliminary drawing area 5d formed between the set of intake rollers 5a, 5a ′ and the set of central rollers 5b, 5b ′ and the set of central rollers 5b, 5b ′ and the discharge rollers 5c, 5c ′, 5c ″ The fiber slivers FB1, FB2, FB3, FB4, FB5 and FB6 are pulled out in both of the main pull-in areas 5e formed during the set.

The positions of the lower rollers 5a, 5b, 5c of the pulling system 5 are fixed. On the other hand, the upper rotating rollers 5a ', 5b', 5c 'and the rotation changing roller 5c "move laterally with respect to the traveling LR direction, and firmly hold the fiber slivers FB1, Fb2, FB3, FB4, FB5 and FB6. In order to make it possible, it has bearings that push the lower rollers 5a, 5b, 5c by means of a load mechanism (not shown). Therefore, the upper rollers 5a ′, 5b ′, 5c ′ and the rotation changing roller 5 ″ pass as they pass. To the fiber sliver FB1, FB2, FB3, FB4, FB5 and FB6.

The supply unit 6 comprises a funnel 8 and a drive discharge roller 9 on the fixed bearing, and a movable drive discharge roller 9 ′ that presses the fixed discharge roller 9 under load. The funnel 8 operates to compress the fiber slivers FB1, FB2, FB3, FB4, FB5 and FB6 drawn to produce a single compact fiber sliver FB. The discharge rollers 9 and 9 'draw the fiber sliver FB from the measuring funnel 8, and further compress the flattened fiber sliver FB. The arrangement speed LG is thus determined by the speed at which the discharge rollers 9, 9 ′ rotate.

The device 7 for placing the fiber sliver FB in the sliver can K is loaded with a drive discharge roller 9 mounted on a fixed bearing and can be rotated about the fixed discharge roller, the rotary table 10 and an axis indicated by a broken line. A movable drive discharge roller 9 ′ that pushes the sliver duct 11 is included.

The sliver can support 12 is constructed such that it supports the sliver can K and moves it periodically. For this, it has a can table 12 'that is driven to rotate about a rotation axis DR (dashed line). A sliver can support 12 comprising a rotating turntable 12 'is particularly suitable for a sliver can K having a round cross section known as a round can. When the sliver can K is arranged so as to face the can table 12 ′, the opening faces the opening of the rotary table 10. Since the rotary axis DR of the rotary table 10 and the rotary axis DR ′ of the can table 12 ′ are offset from each other, if the rotary table speed DG matches the arrangement speed LG, the fiber sliver FB conveyed through the sliver duct 11 is used. It is possible to arrange the sliver can K in a loop shape in a cycloidal arrangement. If the turntable 10 and can table 12 'rotate in the same direction, the fiber sliver FB is placed in an outer cycloid pattern, while if they rotate in the opposite direction, the pattern becomes an inner cycloid.

When a sliver can with a rectangular cross-section, known as a rectangular can, is filled, a sliver can support device on the support that moves periodically back and forth (not shown in FIG. 1) is usually used. This imparts an oscillating transport motion to the rectangular can and consequently places the sliver in a normal cycloid loop.

The retractable frame 1 includes a machine control device 13 that controls the main motor 14. This drives the lower roller 5c of the supply row set 5c, 5c ′, 5c ″, the discharge roller 9 on the fixed bearing, the discharge roller 9 ′ on the movable bearing, the rotary table 10 and the can table 12 by a gear system (not shown). These actuating parts that are driven directly by the main motor 14 can be adjusted by replaceable parts, but have a rotational speed ratio that keeps the retractable frame 1 constant during operation. Includes gear wheels, replaceable pulleys and / or similar devices.

Prior to the actual placement of the fiber sliver FB into the sliver can K by selecting and adapting suitable replaceable parts in the series of drives on the rotary table and / or in the series of drives to the discharge rollers 9, 9 '. In step, the rotational speed DG is adjusted to the supply speed LG. This type of correction prior to operation is performed, for example, when changing batches, for example when changing placement dimensions as a result of changes in can size or turntable dimensions, or when it is determined that the device has been misadjusted. Is called.

While the fiber sliver FB is actually placed in the sliver can K, the ratio between the feed speed and the rotary table speed is constant. In other words, the characteristic curve is linear. Here, at the planned supply speed LG, the turntable DG speed corresponds to the base speed GG, and as a result, the replaceable parts are selected so that the fiber sliver FB is arranged in a cycloid pattern. This base speed is usually determined by experimental tests in advance.

Further, the main motor 14 includes supply stand rollers 2a and 2b, lower intake rollers 3a and 3b, fixed position sensor roller 4a, movable sensor roller 4a ', lower roller 5a of the set of intake rollers 5a and 5a', and central rollers 5b and 5b. The lower roller 5b of the set of 'is driven through the differential gear 15. The operating parts of the tensioning system 1 driven by the differential gear 15 also exhibit a constant ratio between their rotational speeds, whereas the rotational speeds of the lower rollers 5b of the set of central rollers 5b, 5b ′ are supplied to the supply rollers 5c, 5c. With respect to the rotational speed of the lower roller 5c of the set '5c', it is possible to adjust with the drive arrangement shown. This changes the tension, thereby feeding fiber slivers FB1, FB2, Fb3, FB4, FB5 and It is possible to compensate for the weight change per unit length of the FB 6. For this purpose, the measured value MW by the inlet sensor unit 4 is transmitted to the machine controller 13. Based on the measured value MW, upstream of the main pull-in area HV Next, the control that acts on the differential gear 15 so as to correct the rotational speed of the working parts installed in the motor. Transmitting the decree to the servo motor 16.

FIG. 2 shows a detailed display of the turntable 10 with the sliver can K in the operating position. The rotary table 10 includes a table body 17, a table holder 18, and a bent sliver duct 11. This is attached to the table holder 18 by the casting part 19 at the upper end, and the lower end is attached to the table body 17 by the casting part 19.

The table body 17 has a pressure surface at the lower end. The gap AB between the pressure surface 21 and the container 10 is sufficiently narrow so that the arranged fiber sliver FB does not spill from the container 10. Further, the table body 17 has a groove 17 ′ around it, and this is attached to a V-belt (not shown) used for driving the rotary table 10.

When the device according to the invention 7 is in operation, it enters the sliver duct 11 parallel to the rotation axis DR in the region of the inlet opening 22, where it changes direction and leaves the sliver duct 11 and is eccentrically arranged with respect to the rotation axis DR, the pressure surface 21. The sliver can K is disposed through the inlet opening 23 disposed in the plane.

The sliver duct 11 is composed of two directly overlapping arcs 24, 25 occupying different spatial planes.

When transporting the fiber sliver FB by sliver duct 11, essentially becoming loose from the homogeneous fiber sliver FB is faster rotation that particularly fast feed rates LG and liaison as a result of the forces acting somewhat particles to the fiber sliver FB It cannot be avoided at table speed. A strong force is applied to the fiber sliver FB, particularly in the region of the arc 24. For example, such loosening particles are composed of short fibers or another material.

Loose particles tend to accumulate on the inner wall of the sliver duct 11, particularly in the arc 25 in the region of the inlet opening 23. When the device is activated, these accumulations form a particle mass of considerable size (known as a mouse). Such a particle mass loosens from the inner wall of the sliver duct 11 over time, which in turn reaches the sliver can K, causing problems for further processing of the fiber sliver FB. Furthermore, these accumulated particles damage the placed fiber sliver FB.

Attempts Mouse forming avoidance by the use of by modifying the dimensions of the sliver duct 11 or sliver duct 11 interior surface for low friction material is reduced the problems over the long term is not overcame.

FIG. 3 shows a top view of a sliver can K filled with fiber sliver FB. If, having between rotary table of the fiber sliver FB arrangement, if the same as that of the target base speed GG, consistent placement diameter AD, a consistent distance AK sliver column BS from consistent displacement VS and sliver cans K inner surface Obtain the indicated cycloid placement pattern.

The wavy placement pattern shown in FIG. 4 is obtained when the turntable DG speed is constantly lower than the planned base speed GG during placement. In addition to the wave of the fiber sliver FB, it is not useful to install the sliver column BS directly on the inner wall of the sliver can K.

Furthermore, if the turntable speed is greater than the planned base speed GG during placement, the placement pattern shown in FIG. 5 is obtained. Each of the loops arranged here has a peak having a sharp arrangement outward rather than AD. The displacement between adjacent loops varies. It can clearly be seen that the displacement VS1 is greater than the displacement VS2.

The arrangement pattern shown in FIGS. 4 and 5 is not desirable when the fiber sliver FB is pulled out of the sliver can K because they usually cause problems. Thus, in fact, great care is taken to ensure that the rotary table speed DG corresponds to the specific base speed GG.

The basis of the present invention is that the fiber sliver FB temporarily lowers the rotary table speed DG as compared with the specific base speed GG during the placement in the sliver can K. Accordingly, the present invention consciously counters the previous mainstream opinion that any deviation from the base speed GG must be avoided during filling of the sliver can K.

In one embodiment of the present invention, the rotary table speed DG is reduced by a predetermined speed shape GP, an example of which is shown in FIG. 6a. The speed shape GP defines the rotary table speed DG according to the length LFB of the conveyed fiber sliver FB. The velocity shape GP includes a sequence S that is continuously repeated. The first segment AB1 of the sequence S corresponds to an LFB length of 200 m, for example. During segment AB1, the turntable speed corresponds to the planned base speed GG. The second segment AB2 of the sequence S immediately follows the first segment AB1 and corresponds to an LFB length of 2 m, for example. It is therefore much shorter than segment AB1. During segment AB2, the rotary table speed decreases to a lower speed AG. For example, a decrease of about 3% occurs.

The example velocity profile GP shown often produces a sufficient cleaning effect in the sliver duct without changing any of the cycloid placement patterns shown in FIG. However, depending on the material, the thickness and / or dirt content of the fiber sliver FB, and also depending on the dimensions of the device 7, other modified speed shapes GP can be specified. The shape GP optimization for every individual case can be determined experimentally by appropriate tests. It is sufficient to cover the situation that actually occurs with a relatively small number of velocity shapes GP.

FIG. 6b shows an example of the drive interruption shape AP. The drive interruption shape AP specifies whether the drive system 26 acts on the turntable or whether the action is interrupted with respect to the length LFB of the conveying fiber sliver FB. If the drive interruption shape AP takes the value 1, this means that the drive system 26 drives the turntable 10 at the planned base speed GG. However, if the drive interruption shape AP adopts the value 0, the drive is interrupted. Next, the turntable speed DG is reduced below the planned base speed GG as a result of the friction loss, whereby the turntable speed DG is temporarily reduced. The drive interruption shape also includes a repeating sequence S that itself consists of segments AB1 and AB2.

FIG. 7 shows the device according to the invention in the interaction with the machine control device 13, the main motor 14 of the spinning preparation machine and the supply device 6. Here, the drive system 26 cooperates with the turntable 10 and allows the turntable speed DG to be temporarily reduced with respect to the specific base speed GG according to the predetermined speed shape GP, while the fiber sliver FB is moved to the sliver can K. Will continue. In order to automatically control the rotary table speed DG, it incorporates an electronic control unit 27. The control device 27 incorporates a storage device 28 that stores a very large number of velocity shapes GP. In any case, during placement of the fiber sliver FB, one of the stored velocity shapes is read and actuated manually or automatically.

The drive of the rotary table 10 is supplied by the main motor 14 of the spinning preparation machine 1. It is connected to the turntable 10 by a clutch 29 and by a selectable coupling machine (not shown). Closing the clutch 29 adapts the selectable combiner so that the turntable 10 is driven at the planned base speed GG. A decrease in the rotary table speed DG related to the operating speed shape GP is generated by opening the clutch 29 in response to a control command from the control device 27. After the specified time has elapsed, after conveying the specified length of the fiber sliver FB, or when the rotary table speed DG has decreased to a specific specified value, the clutch 29 is closed in response to a new control command from the control device 27. This procedure is repeated continuously and periodically.

FIG. 8 shows a further possible embodiment of the device 7 according to the invention. The turntable 10 is again driven by the main motor 14, in this case via a gear box 30 having a controllable transmission ratio. The controllable gearbox 30 includes a traction device 31 that allows the transmission ratio to be changed. It incorporates a pulley 32 with a V-belt running surface that can change its relative axial distance. This allows the V belt to change the radius surrounding the belt pulley 32. The device 7 is designed so that the relative axial movement can be controlled by the control device 27.

FIG. 9 shows a variation of the apparatus shown in FIG. The controllable traction device is replaced with a differential gear 33. Its drive side is connected to the main motor 14, its output side is connected to the rotary table 10, and its support 34 is connected to an auxiliary motor 35 whose speed can be controlled by the control device 27. The support part 34 supports the rotating wheel of the differential gear 33. When the movement of the support 34 is prevented, the differential gear 34 operates like a stationary transmission. When the support unit 34 is stationary, a coupling machine (not shown) between the main motor 14 and the turntable 10 is selected so that the turntable speed DG corresponds to the base speed GG. In order to decrease the rotary table speed DG, the control device 27 starts the operation of the auxiliary motor 35. This starts the rotation of the support portion 34 so as to decrease the rotary table speed DG.

Alternatively, the auxiliary motor 35 can be replaced with a controllable brake to hold the support 34 in place. Next, the rotary table speed DG can be easily reduced by releasing the brake.

FIG. 10 shows a further apparatus according to the invention implementing the activation system 26 as a dedicated drive. The supply device 6 and the turntable 12 'are mechanically independent devices comprising a controllable electric motor 36 connected to the turntable 10 via a gearbox with a fixed transmission ratio while driving by the main motor 14 is continued. The rotary table 10 is provided. The electric motor 36 is controlled by the control device 27.

The invention is not limited to the embodiments shown and described. Modifications within the scope of the claims are possible at any time.

Further advantages of the invention are described in the following drawings.
Side view of retractable frame with the latest technology Rotary table with sliver can in place View from above of sliver can with fiber sliver arranged in a cycloid shape Sliver can with wavy fiber sliver Sliver can with irregularly arranged fiber sliver Ideal speed shape Device according to the invention with a clutch Device according to the invention with a traction device Device according to the invention with a differential gear Device according to the invention with a dedicated drive.

1: Pull-in frame
2: Supply stand
3: Intake roller unit
4: Intake sensor unit
5: Pulling system
6: Feeder
7: Equipment
8: Funnel
9: Discharge roller
10: Rotating table
11: Sliver duct
12: Can table
13: Machine control device
14: Main motor
15, 33: Differential gear
17: Table body
18: Table holder
19: Casting parts
21: Pressure surface
22: Entrance opening
23: Exit opening
24, 25: Arc
26: Drive system
27: Control device
28: Machinery
29: Clutch
30: Gearbox
31: Traction device
32: Pulley
34: Support section
35: Auxiliary motor
36: Electric motor AB: Segment AD: Arrangement diameter AG: Decrease speed AK: Distance AP: Discontinuation shape BS: Sliver column DG: Rotary table speed DR: Rotary shaft FB: Fiber sliver GG: Base speed GP: Speed shape HV: Pull-in Region K: Sliver can LFB: Fiber sliver length LG: Arrangement speed LR: Movement direction MW: Measurement value S: Sequence VS: Displacement

Claims (25)

A device for a pull-in frame or card of a spinning preparation machine (1),
Sliver cans support portion sliver supporting the can (K) for moving the sliver cans (K) periodically (12), a turntable rotating shaft around (DR) can rotate the turntable speed (DG) ( 10), possess fiber sliver and (FB), and identifiable feed rate (feed device arranged in the sliver cans (K) by LG) (6), a,
The rotary table (10) includes a sliver duct (11) for conveying the fiber sliver (FB),
The fiber sliver (FB) arrangement outlet opening (23) of the sliver duct (11) is arranged eccentrically with respect to the rotation axis (DR) and is supported by the sliver can support (12) (K and face in the direction of),
The given supply rate based speed suitable for (LG) (GG) the rotary table speed (DG), thereby disposed fiber sliver to (FB) to cycloid shape sliver cans (K),
The specific base speed while the fiber sliver placement in the sliver can (K) continues according to the specifiable shape (AP, GP) so that the longitudinal tension of the fiber sliver (FB) decreases during the speed reduction drive system designed to compared the (GG) to produce a temporarily reduced to the rotary table speed (DG) (26) is provided in the rotary table (10), and wherein the device. It said identifiable shape (AP, GP) is a drive interruption shape during deployment continues to identify the temporary suspension of the drive with respect to the rotary table (10) (AP), the rotary table speed during deployment continues (DG) The device (7) according to claim 1, characterized in that it is one or both of a specified velocity shape (GP). Either for automatic control of the speed of the rotary table according to the speed shape (GP) and for automatic temporary interruption of the rotary table (10) according to the drive interruption shape (AP) or Device (7) according to claim 2 , characterized in that it contains a control device for both, preferably an electronic control device (27).
The control device (27) is connected to the machine control device (13) for the spinning preparation machine (1) for data exchange or is incorporated into the machine control device (13) for the spinning preparation machine (1) , the apparatus according to 請 Motomeko 3. Storage device (28) therein, and Jo Tokoro the rate shape (GP), that the drive interruption shape as (AP), a storage device either or both is stored in the (28) is associated with the control device Device (7) according to claim 3 or 4, characterized in that The shape (AP, GP) in accordance with the elapsed time, depending on the length of the conveyance fiber sliver (FB) (LFB), and rotary table speed, the drive for the rotary table (10) (DG) suspended When, and identifies one or both of the apparatus according the 請 Motomeko 1 to any one of 5 (7). Identifying a maximum decrease in the rotary table speed (DG) with a value between 0.5% and 5% compared to a specific base speed (GG) for the shape (AP, GP). to apparatus according to any one of the 請 Motomeko 1 6 (7). Identifying a maximum drop in the rotary table speed (DG) with a value between 1% and 4% compared to a specific base speed (GG) for the shape (AP, GP), Device (7) according to any one of the preceding claims. Identifying a maximum decrease in the rotary table speed (DG) having a value between 1.5% and 3% compared to a specific base speed (GG) for the shape (AP, GP). A device (7) according to any one of claims 1 to 6. The shape (AP, GP) is characterized in that it comprises a repeated sequence (S), according to any one of the 請 Motomeko 1 9 (7). It said sequence (S) is characterized in that it is composed of a base speed (GG) first segment to provide (AB1) and a second segment that provides a reduction of the turntable speed (DG) (AB2), billed Item 11. The apparatus (7) according to any one of Items 1 to 10 . As 300m hereinafter the sliver (FB) is transported during the segment period, and identifies the first segment (AB1), Apparatus according to 請 Motomeko 11 (7). As 2 00m hereinafter the sliver (FB) is transported during the segment period, and identifies the first segment (AB1), Apparatus according to 請 Motomeko 11 (7). As 1 50 m or less of the fiber sliver (FB) is transported during the segment period, and identifies the first segment (AB1), Apparatus according to 請 Motomeko 11 (7). As 5m hereinafter the sliver (FB) is transported during the segment period, and identifies the second segment (AB2), Apparatus according to 請 Motomeko 11 (7). 4 As m or less of a fiber sliver (FB) is transported during the segment period, and identifies the second segment (AB2), Apparatus according to 請 Motomeko 11 (7). 12. The device (7) according to claim 11 , characterized in that the second segment (AB2) is identified such that a fiber sliver (FB) of 3 m or less is conveyed during the segment period.
Device according to claim 3 , characterized in that the drive system (26) contains a clutch (29) controlled by the control device (27).
Said drive system (26) is characterized by a built-in gear box (30) with a controllable transmission ratio that is controlled by the control unit (27), one of the 請 Motomeko 1 18 1 Device. The controllable gearbox (30) is, for example, a flat belt transmission comprising at least one conical pulley in which the flat belt is movable in the axial direction, or a V belt transmission comprising a belt pulley (32) capable of controlling its effective diameter ( characterized in that 31), a traction transmission with a controllable transmission ratio, such as (31), apparatus according to 請 Motomeko 19 (7). It said controllable transmission (30) comprise a brake controllable by the support portion (34) of the control device (27), or a controllable auxiliary motor by a control unit (35), a differential gear that links Device (7) according to claim 19 or 20 , characterized in that Said drive system (26), the solid via a transmission (37) having a constant transmission ratio is connected the the rotary table (10), characterized in that it is implemented as a dedicated drive, from 請 Motomeko 1 21 apparatus according to any one of out (7). It said drive system (26), viewed including the air motor (36) conductive, the electric motor (36) is characterized in that it is capable of controlling its speed by the control device (27), from 請 Motomeko 1 The device (7) according to any one of the claims 22 . Characterized by designing sliver cans supporting part (12) so as sliver to produce a rotating or oscillating and the conveying movement of the can (K), according to any one of 請 Motomeko 1-23 (7). Spinning preparation machine (1) is supplied for feeding the fiber sliver (FB) in identifiable feed rate (LG) to a device (7) for placing the feed sliver (FB) into a sliver cans (K) device (6) a lead-frame (1) or card having a spinning preparation machine, characterized in that to construct a device (7) by any one of the 請 Motomeko 1 24.