EP0635448B1 - Procedure for traversing a flat can during its filling at a sliver delivering textile machine and its device - Google Patents

Description

The invention relates to the filling of the flat can with sliver by a textile machine delivering sliver, such as a card or draw frame, the flat can being moved under a stationary rotating turntable. The movement of the can has an influence on the quality of the sliver laid down and on the degree of filling of the can.

According to the prior art, flat cans are filled by rotating a turntable as a delivery device, and the flat can is moved back and forth under this turntable, i.e. the flat can is changed. While the flat can is being moved, its speed is matched to the delivery speed of the sliver. The back and forth movements of the flat can take place at a constant speed up to the turning point. During this movement, the flat can has a flat position with its base.

In order to achieve a higher degree of can filling with a defined quality of the sliver to be laid down, it was proposed in the prior art (cf. EP 457 099, column 4, lines 26-33) to combine the straight-line traversing movement with a lateral movement of the flat can to this end . EP 457 099, column 12, 35.-39. Line assumes that the lateral, translational transverse displacement of the flat can can result in an increase in the degree of filling by shifting the loop storage of the sliver. This fact is important because the can also serves as a buffer store between the draw frame and the rotor spinning machine, reducing the number of times it is transported as the degree of filling increases. EP 457 099, column 4, 26.-31. row suggests to move the flat can after passing the respective reversal point by a lateral transverse movement, the displacement corresponds approximately to the thickness of a sliver. A lateral transverse movement can be done by tilting the flat can. Regarding the technical feasibility, the document (EP 457 099, column 12, lines 39-42) does not provide any information, but according to the prior art, rail-guided scales (DE-OS 19 23 621) are possible for the flat can both to change and to enable the associated lateral transverse displacement.
DE-OS 19 32 621 describes that the transverse displacement is carried out by two independently guided transport devices (superstructure and undercarriage). The long can is on the uppercarriage. The directions of movement between the undercarriage and the uppercarriage are arranged so that they can be perpendicular to each other. The undercarriage realizes the traversing movement and the superstructure realizes the straight, lateral transverse displacement of the flat can. The document describes superimposing both directions of movement so that a resulting direction of movement follows.

It is characteristic of these solutions which are characteristic of the prior art that the transverse displacement of the flat can is a translatory movement. This translational transverse displacement of the flat can is achieved by a relatively high outlay. The disadvantageous expense consists in the additional two carriages and their control. The disadvantage here is that the inertial mass to be moved increases unnecessarily.

As the degree of filling of the flat can increases, there is still the problem that inertial forces also arise with the translational transverse displacement, which must be absorbed by the flat can and the traversing device. This requires a correspondingly large dimensioning of the flat can and the traversing device. This in turn is associated with increased costs.

The object of the invention is to reduce the effort required for filling a flat can in terms of effort compared to the prior art.

A textile machine delivering sliver can be a card or a draw frame. The delivery device is a stationary turntable which, due to its rotation, deposits the sliver in a cycloid-like manner in the flat can. The flat can is moved below the turntable for filling. The method according to the invention for traversing a flat can during the filling process on a textile machine delivering a sliver is implemented in accordance with the characterizing features of claim 1.

The reversal path of the traversing is part of the traversing path. For the flat can, the traversing path is the path between two reversal points. If the flat can moves to a reversal point, the flat can is braked in the immediate vicinity of the reversal point and accelerated for a short distance immediately after passing through the reversal point. These distances of braking and accelerating in the immediate vicinity of the turning point are called the turning path. The movement of the flat can between the two reversing paths is an essentially uniform movement. In the reverse path, the flat can is pivoted from one side to the other around a defined axis. The flat can is pivoted in the reverse path by such an angular amount that the upper edge of the can, which is formed by the bead, is laterally offset. This offset of the upper can rim is essential for the process, because the sliver loops are always deposited in the area of this upper can rim. The shelf, which is formed between the upper edge of the can, is moved laterally by the swiveling. This makes it possible that the tape storage can be stored laterally offset to the original position (basic position) of the flat can by the turntable. This lateral offset is adjustable and corresponds approximately to the thickness of the sliver to be processed. When swiveling, the flat can leaves its basic position. The basic position is characterized in that the storage surface of the flat can is parallel to the base of the flat can. In the swiveled The flat can is changed to the opposite reversal path. The angle of the pivoting with respect to its basic position, which is assumed by the flat can, is reversed with respect to the basic position when the opposite reversing path is reached. The flat can swivels in the other direction around the axis and in this swiveled position it is in turn swung to the opposite reversal path.

An advantage of the invention is that the pivoting movement as a lateral transverse displacement of the flat can is more economical than the known translatory transverse displacement from the point of view of technical complexity. The effort was noticeably reduced. A further advantage is that the inertial forces, which adversely affect the filling process, in particular when the traversing device is reversed, are also compensated for much more cheaply. The angular amount by which the flat can can be pivoted can be set according to the method. The flat can is usually pivoted to the one and the other side by an equal angle. This angular amount is variable and adjustable. This is useful when changing the sliver material as a result of changing lots. Another advantage is to influence possible influences on the sliver storage, which result from the interaction between the storage direction of the sliver and the direction of movement of the elongated side wall. It is an additional advantage that unequal angles can be set for panning, i.e. the angular amount of panning to one side is unequal to the angular amount of panning to the other side. This makes it possible to compensate for deviations from the center between the flat can and the turntable.

The device according to the invention can be implemented according to the characterizing features of claim 5 and in another variant according to the characterizing features of claim 27.

The swivel sensors are arranged on both sides of the traversing path of a flat can. With regard to the flat can, the arrangement is such that the swivel transmitter on both sides in the vicinity of the longitudinal walls of a flat can are arranged. In each case one swivel encoder can be arranged in a position relative to the longitudinal wall, which can be located between the upper can edge and the adjacent gripper plate of the traversing device or the lower can edge and the adjacent gripper plate. The arrangement of the swivel sensors for the longitudinal wall of the flat can can also depend on the selection of the swivel axis.

The swivel encoders enable swiveling around an axis, the swivel axis. The swivel encoders give the force to swivel and the direction of force to the flat can. The swivel encoders can advantageously be arranged with respect to one another in a horizontal plane. The swivel encoders give the flat can a guide at the same time as it shifts. If the flat can reaches a reversal point of its traversing path during traversing, then both swivel encoders swivel the flat can by a defined angle in a defined direction. The flat jug is held in this position and guided back to the other reversal point when traversing. When the other reversal point is reached, the swivel encoders swivel the flat can into the opposite angular position. This process is repeated until the jug is full and a jug change is indicated.

The flat can can be pivoted in a traversing device by the pivoting device. However, the flat can can also be pivoted on a transport path that supports the traversing, or the flat can and associated transport path are pivoted together.

In an advantageous embodiment, the flat can is pivoted on a transport path. The transport track is used to guide the movement of the flat can in the reverse path to support the pivoting of the flat can.

For this purpose, the flat can is held by the traversing device and moved on the transport path. The traversing device has gripper arms at the ends of which gripper plates are located. The traversing device holds the flat can between the gripper plates. The swivel axis is formed by mounting the gripper plates in the gripper arms.

The device transport path has the advantage that it is fixed and supports both the function of the back and forth movement of the flat can and the function of the pivoting movement, whereby pivoting of the transport path or an additional can transport means are avoided. This advantage is achieved in particular in that the lower can edge (formed by the can bulge) is moved on rollers which are lowered with respect to one another with their axis of rotation. This roller arrangement enables the flat can to be both shifted and pivoted on the transport path. Swiveling on the conveyor belt is possible because the lower edge of the can can slide up and down on the inclined rollers.

In an advantageous embodiment of a swivel encoder, this is designed as an eccentrically mounted roller. The roller is rotatably mounted in its eccentric axis of rotation. With an adjusting device, the roller can also be swiveled and fixed continuously around its eccentric axis of rotation. The flat can is guided between the two eccentrically mounted rollers. The rollers can be arranged in the lower or upper can area. By simultaneously pivoting both rollers through a common angle and in a common direction, the flat can is pivoted about its pivot axis. The design of the swivel encoder as eccentrically mounted rollers is particularly advantageous because there is very little structural effort for swiveling. The rollers also achieve advantageous guidance of the flat can during the traversing. An adjustment device controls the movement of the two rollers depending on the reversal points.

Another advantageous development of the swivel encoder is a sliding bar. The sliding bars arranged on both sides in the vicinity of the longitudinal wall of the flat can can be handled independently of one another, yet their interaction can be synchronized. The angle of the swivel is via the control of the swivel encoder adjustable.

The swivel encoders additionally allow the flat can to be centered in a basic position, which is advantageous for changing the can, and to precisely guide the flat can when it is being moved in the pivoted position.

Figur 1

Flachkanne

Figur 2-2b

Schwenken der Flachkanne aus der Grundstellung

Figur 2c-2e

Schwenken der Flachkanne aus der Grundstellung bei Versatz zwischen Drehteller und Flachkanne

Figur 3-3a

Ablage von Faserband in eine Flachkanne

Figur 4

Achsen zum Schwenken

Figur 5

Achsen zum Schwenken

Figur 6

Achsen zum Schwenken

Figur 7

Schwenkvorrichtung mit Transportbahn

Figur 8

Schwenkvorrichtung mit ausführlicher gestalteter Transportbahn

Figur 9

Transportbahn mit Schiebebalken

Figur 10

Schwenken der Flachkanne durch zwei Transportbahnen

Figur 11

Schwenken der Flachkanne mit Schienensystem einer Transportbahn

Figur 12

Korrektur von Einflüssen bei der Ablage des Faserbandes

Figur 13

Schwenkgeber als exzentrisch verstellbare Rolle

Figur 14

Funktionsweise der Schwenkgeber mit exzentrisch verstellbarer Rolle

Figur 15

Draufsicht auf Schwenkgber nach Figur 13

In the following, further features of the invention are given in exemplary embodiments and explained with the aid of drawings. Show it

Figure 1

Flat jug

Figure 2-2b

Swiveling the flat can out of the basic position

Figure 2c-2e

Swiveling the flat can out of the basic position with an offset between the turntable and the flat can

Figure 3-3a

Storage of sliver in a flat jug

Figure 4

Swivel axes

Figure 5

Swivel axes

Figure 6

Swivel axes

Figure 7

Swivel device with transport track

Figure 8

Swivel device with a detailed transport path

Figure 9

Transport track with sliding bar

Figure 10

Swiveling the flat can through two transport lanes

Figure 11

Swiveling the flat can with the rail system of a transport track

Figure 12

Correction of influences when laying the sliver

Figure 13

Swivel encoder as an eccentrically adjustable roller

Figure 14

Function of the swivel encoder with eccentrically adjustable roller

Figure 15

Top view of swiveling encoder according to FIG. 13

According to the embodiment, a flat can is under the turntable of a route. The turntable is stationary in the machine table. It has a guide channel through which the sliver leaves the turntable and is placed in the flat can. Since the flat can is oscillated under the turntable over its entire length, the fiber sliver is deposited cycloidally and in individual layers in the flat can. The flat can essentially has an elongated shape, ie the side walls are substantially larger than the end walls. In Figure 1 one of the flat cans commonly used is shown. The outer shape of the flat can is essentially formed by the two elongated side walls 2 and 3 and the two end faces 4 and 5. The walls 2, 3, 4 and 5 are perpendicular to their base 7. The base 7 of the flat can is in the base 6, which represents the flat floor. The walls 2, 3, 4, 5 are delimited from the base 6 by the can bulge 8. The upper limit of the flat can is provided by the can bulge 9. Between the can bulge 9 as the upper boundary of the can walls there is a surface which in FIG Storage surface 10 is arranged parallel to the base 7 and thus also parallel to the base 6. As will be explained later, the position of the storage surface 10 changes when pivoting. This state of the flat can 1 according to FIG. 1 is referred to as the basic position G. The basic position G is for one Can change advantageous. The can plate 11 is positioned a few centimeters below the upper can bead 9 when the flat can 1 is empty. The can plate 11 is pressed into this position by a pantograph and ring springs. For reasons of clarity, this known mechanism for the can plate is not shown. As the weight of the sliver storage increases, the can plate 11 is pressed in the direction of the standing surface 7.

Figure 2, 2a and 2b illustrate the pivoting of the flat can. The end face of a flat can is shown in FIG. The end face 5 can be seen, which is delimited by the side surfaces 2 and 3 and partly by the upper can bead 9 and the lower can bead 8. The flat can 1 stands with its base 7 on the base area 6. FIG. 2 facilitates the understanding of a basic position G of the flat can to be defined. A flat can is also in the basic position if the base 7 is arranged above and parallel to the base 6. FIG. 2 also shows a central perpendicular M which lies in the middle between the side walls 2 and 3, runs parallel to the latter and is perpendicular to the standing surface 7. The axis A0, about which the can 1 is to be pivoted, is a longitudinal axis which is perpendicular to the perpendicular perpendicular M, but below the standing surface 7. This state according to FIG. 2 is the basic position G of the flat can 1. When the filling process begins, the flat can becomes pivoted into a state shown in Figure 2a or Figure 2b. At the beginning of the filling process, it is assumed, for example according to FIG. 2a, that the flat can starts in the reverse path. It is pivoted within this reversal path by an angle α to the left about the axis A0. The angle α is created by pivoting a flat can with a perpendicular M relative to the perpendicular L of a base area 6. The upper edge of the can, which is formed by the bead 9, is laterally offset. This lateral offset of the upper edge of the can is essential because this leads to a lateral offset of the storage surface 10. The variability and adjustability of the angles α and β means that the placement of the sliver loops can be varied with respect to the lateral edge of the can.

This is very important, for example, when processing different sliver materials. The flat can is held in this pivoted posture according to FIG. 2a and oscillates up to the opposite reversal path. When the flat can arrives in the opposite reversal path, the flat can 1 is pivoted in the opposite direction with respect to the perpendicular L. Figure 2b shows this state. The flat can 1 with a perpendicular M was pivoted back by the amount α and moreover pivoted in the opposite direction by the angle β. The flat can is held in this pivoted position (FIG. 2b) and oscillates when the reversal path is left. This process of pivoting from the end position of the angle α into the end position of the angle β and vice versa is repeated periodically in the reversal paths. The flat can is changed in the swiveled position. This corresponds to a lateral displacement of the top edge of the flat can relative to the traversing direction. With the lateral displacement of the flat can by pivoting it is achieved that the slings can be stored offset from the layer of slings already directly below. The flat can is advantageously pivoted by an angle which corresponds to the displacement of the flat can by approximately the thickness of a sliver to be processed. It has been found that this angle between perpendicular M and perpendicular L can be in the range of about 2 °.
The swiveling of the flat can to one side and later to the other can take place at the same angular amount, ie the angles α and β are equal in amount, but opposite in the direction with respect to the perpendicular L.

The angular amount is variable and adjustable.

This variability and adjustability of the angle for pivoting provides a further advantage which has not previously been achieved in the high-speed area of filling flat cans. There is an influence on the placement of the sliver during traversing. This influence results from the interaction between the direction of deposition of the sliver with respect to the direction of movement of the elongated side wall, if Approach the sliver and the side wall. This situation is commented on in FIG. 12.

The upper can rim 500 of a flat can is shown schematically. A turntable 600 is assigned. The flat can has a traversing speed with the direction of movement K. The turntable 600 has a rotational speed and a direction of rotation DR, with rotational forces R1, R2 occurring on the circumference influencing the sliver to be laid down. It is also influenced by the movement of the flat can. The sliver deposited from the turntable 600 into the flat can with the top edge 500 of the can receives a relative speed.

In the illustration according to FIG. 12, the speed components of the turntable and the flat can act in the opposite direction near the wall 500. The result is a lower relative speed of the sliver in this area. The storage radius for the sliver increases, i.e. the sliver will be deposited slightly more towards the edge of the can.

This effect can be taken into account due to the variability and adjustability of the angle for pivoting the flat can, i.e. the angle to be set for pivoting can be somewhat smaller than originally without taking the described effect into account, provided the can rim 500 is pivoted to accommodate the fiber sliver drifting outwards at this point. The can rim is thus not pivoted into position 500 'as originally, but, provided that there is an "oncoming" direction of pivoting RS, only pivoted into the position of the upper can rim 500' ', i.e. the set angle is slightly smaller than the originally intended angle of pivoting. An analogous situation applies to the return movement of the flat can.

However, a relative speed of the sliver is also possible, which leads to the sliver receiving a higher relative speed. In such a case, the fiber sliver is deposited somewhat away from the wall. You can do this compensate by setting a larger than originally intended angle of the pivoting of the upper can rim 500.

In practice, it can happen that the central perpendicular M of the flat can is not exactly centered with the axis of rotation D of the turntable. Figure 2c shows that the central perpendicular M of the flat can 1 deviates from the axis of rotation D of the turntable 22. This inaccurate position between the flat can and the turntable adversely affects the tape storage. In order to compensate for this deviation between the perpendicular M, the flat can and the axis of rotation D of the turntable, the flat can is pivoted laterally at different angles (FIGS. 2d, 2e). As a subsequent comparison between FIG. 2d and FIG. 2e shows, to correct the deviation, the flat can according to FIG. 2d is pivoted by a larger angular amount β than the angular amount α represents in FIG. 2e.

Figures 3 and 3a show the effect that can be achieved by moving the flat can by swiveling the tape deposit. This effect is the basis for the fact that the degree of filling can be increased significantly compared to cans that are not moved laterally.

FIG. 3 schematically shows some sliver loops lying one on top of the other during a traversal movement without lateral displacement of the flat can. It can be seen that the sliver is arranged on the elongated side walls 2, 3 one above the other. In contrast to this, FIG. 3a shows the state of the sliver when traversing with transverse displacement. It can be seen that the fiber sliver is laterally offset from the fiber sliver located below or immediately above it. The offset corresponds approximately to the thickness of a sliver. With this type of storage, the filling level of the flat can can be increased by up to 30% depending on the fiber material.

The position of the axis around which the flat can is pivoted is very important for pivoting the flat can. Some possibilities for the position of the pivot axis are shown schematically in FIG Axis A2 is centrally symmetrical. Another embodiment is the axis A1 lying underneath, which lies in the base of the flat can. The swivel axis A0 is even lower and therefore outside the flat can. This case is already shown in Figure 2. The axis A3 shows the possibility that the flat can can also be pivoted about an axis which is outside the flat can and near a side wall. These possibilities shown have in common that the axis about which the can is pivoted is parallel to the traversing direction CR.

An advantageous solution is the position of the axis A2. This axis is centrally symmetrical in the jug. This has the advantage that the axis A2 leads through the center of gravity of the can body and thus the effort to pivot the flat can is relatively less than in the other possibilities shown.

In order to achieve a lateral transverse displacement of the flat can by swiveling, the axis can also be in a position that does not lead parallel to the traversing direction CR. Such possibilities are shown schematically in FIGS. 5 and 6. Figure 5 shows the position of the A4 axis. This axis A4 lies in the footprint 7 of the flat can 1 from a corner to the diagonally opposite corner of the flat can. This position of the A4 axis is advantageous since the inertia can be used here favorably. In the reverse path of each traverse there is a short stretch of line where the can is accelerated against its original speed. This creates an inertial force of the can center of gravity in the opposite direction, which can be used as a driving force for pivoting the flat can.

FIG. 6 shows the possibility of also being able to guide the axis vertically for pivoting the flat can. The axis A7 is a vertically arranged central axis around which the flat can can be pivoted. As the position of the axis A8 shows, the vertically guided axis can also be guided outside the flat can, advantageously in the vicinity of the end wall. Swiveling around one of these axes also results in an offset of the sliver during the filing.

FIG. 7 shows a basic structure of a device for traversing a flat can according to the invention during the filling process. The section delivers the sliver to the turntable 22, which deposits the sliver (not shown here for reasons of clarity) into the flat can 1. The traversing device 16 detects the flat can 1, each with a gripper arm and its pivotable gripper plate on the end wall.

The flat can 1 is clamped and held between the gripper plates. The gripper plates can be swiveled and reset in their gripper arms. This bearing corresponds to a swivel axis, axis A2.

The gripper arm 17 can be arranged, for example, in the traversing device 16 so as to be pivotable about a vertical axis 170, so that it can be pivoted through 90 ° from an initial position for gripping and holding the flat can. On the other hand, the other gripper arm is strongly fixed in the gripping and holding position, i.e. the other gripper arm forms a stop for the new can to be inserted when the can is changed. This has the advantage that the flat can is thus positioned opposite the traversing device.

With regard to the can wall, an upper can area and a lower can area are shown on both sides. The upper can area is an area between the upper can edge and a gripper plate holding the flat can lies. The lower can area is an area that lies between the lower edge of the can and a gripper plate holding the flat can. The swivel sensors S1, S2 can optionally be arranged for these can areas. For example, the swivel sensors S1, S2 can be arranged in the upper can area. On the other hand, FIG. 7 shows a possible arrangement of the swivel sensors S1 and S2 in the lower can area.

In the example according to FIG. 7, the swivel device is formed by swivel sensors S1, S2 and the axis 21 as well as the transport track 19.

The swivel sensors S1, S2 are arranged in the vicinity of the lower can bead 8. In the basic state, the rotary encoders S1, S2 have no contact with the flat can 1. Before the oscillation begins, the rotary encoders S1, S2 are put into operation, i.e. they give the flat can a guide in the lower area. The swivel sensors S1, S2 thus have the option of centering the flat can in the basic position or swiveling it into a swiveled position and giving guidance in this swiveled position.

In each case in the reversal path, the swivel sensors S1, S2 are activated in accordance with FIG. 7, so that they swivel the flat can in the lower region to the right or left around the axis and, in one of these swivel positions, lead to the opposite reversal path when traversing. After the filling process, the flat can 1 is returned to its basic position G, i.e. it can be transported on a ready-to-use can magazine trolley (not shown). An empty can is conveyed from the can magazine trolley into the basic position G below the turntable 22.

The flat can 1 stands on a transport path 19. The transport path 19 is designed so that it can ensure both the traversing movement and the pivoting movement of the flat can 1. The contact surface 190 of the transport path 19 is designed to be concave. The concave contact surface has its Scheitelli at the lowest level never. Because of this concave design of the contact surface 190, the flat can stands on both sides with the lower can bulge 8 of the elongated side walls on the contact surface 190. This has the advantage that the contact surface 190 enables both a changeable and a pivoting movement of the flat can without additional design effort. The transport track 19 therefore also does not require any portable assemblies such as push cars to carry out the pivoting movement of the flat can.

Figure 8 shows a detailed embodiment of the swivel device with a transport path.
The flat can 1 is seen with the narrow end face. The flat can 1 stands on the transport path 19. The transport path 19 consists of individual, rotatably mounted rollers which are arranged side by side over the entire length of the traversing path. The roles 206 and 207 are shown as representative of this. It can be seen that these rollers are inclined relative to the base 6 at an angle which can be, for example, 12 °. The rollers 206, 207 are arranged with their surface line in such a way that the surface line simulates cutouts from the concavely inclined contact surface 190. Due to this inclination of the rollers, the flat can 1 with its can bulge 8, which delimit the elongated side walls 2 and 3, stands on the right rollers (symbolized by the roller 207) and on the left rollers (symbolized by the roller 206). In the position shown, the flat can is in its basic position G. The central perpendicular M of the flat can 1 coincides with the vertical L of the base area 6 (cf. FIG. 2). In this basic position G, the flat can 1 is located, for example, immediately before the filling process begins. The turntable 22 is also still in the rest position.

The traversing device 16 has its own drive 24 with control, which transmits the force to a clutch mechanism 161. In operation, the clutch mechanism 161 allows the traverse device 16 to be moved on the rail 160. When the respective reversal points of the traversing path are reached, the clutch mechanism 161 receives a signal in a known manner for mutual coupling, so that a reversal of the direction of travel is possible.

According to FIG. 8, the traversing device 16 has pivoted the gripper arm 17, which can be pivoted about the vertical pivot axis 170, in the direction of the narrow end face of the flat can 1. The other gripper arm, not shown here, has gripped the opposite end face, which is not visible in FIG. 89. The further explanations are limited to the gripper arm 17 shown here, but they apply analogously to the other gripper arm which is not visible in the figure. The gripper arm 17 has a gripper plate 18 which positively embraces the end wall of the flat can 1. The gripper plate 18 is pivotally mounted in the gripper arm 17 by means of the axis 21. The axis 21 realizes the function of a swivel axis A2 analogously.

FIG. 8 also shows two sliding bars 202, 203, which are arranged in the lower can area, as a possible swivel transmitter. Each of the slide bars 202, 203 has a length that extends over the length of the flat can. Individual rollers are arranged side by side in each of the slide bars 202, 203. The axes of rotation of these rollers are inclined at an angle to the center perpendicular M.
These and further details of the sliding bar are shown in FIG. 9. The illustration is schematic and shows a section of the transport path 19 and the assignment of the sliding bar 203. The partial transport path 19 is characterized by the inclined rollers 206, 206 'and 206''. The sliding bar 203 is arranged above these rollers. It carries the rollers 204, 204 'and 204''on a frame. These rollers lie with their axis of rotation in a plane that is angled about 78 ° to the base. This sliding bar 203 is freely movable in the transverse direction to the transport path 19. The opposite sliding bar 202 (not shown in FIG. 9) is also freely movable in the transverse direction. The axes of rotation of the rollers of both sliding beams are inclined to one another so that their imaginary extension of the axes of rotation meet above the transport path. The two sliding bars 202, 203 can be controlled by the controller 210 so that their movements can be controlled independently of one another, so it is possible not only to vary the angle amount, but also to realize unequal angles α and β when pivoting. This makes it possible to keep one of the two angles larger or smaller than the remaining angle. An offset of the perpendicular perpendicular M to the axis of rotation D of the turntable could thus be compensated for.

The sliding bar 202 is connected to the pneumatic cylinder 200, the same applies analogously to the sliding bar 203 and the pneumatic cylinder 201. Depending on a control 210, the pneumatic cylinders 200, 201 receive compressed air via the pneumatic line 208, 209 so that the slide bars 202, 203 can be moved towards or away from the can according to their inclined position. The flat can placed on the transport path 19 can thus be centered in a basic position G.

Starting from the basic position G explained, the flat can is to be brought into a pivoted position. For this purpose, the pneumatic cylinder 201 is relieved with compressed air in a defined manner via the controller 210 and, in return, the pneumatic cylinder 200 is definitely loaded with compressed air. This interplay of the pneumatic cylinders 200, 201 means that the lower half of the flat can 1 is pivoted about the axis 21 in the direction of the left side of the picture. The can rim with can bulge 8 of can wall 3 slide upwards on the rollers (symbolically shown in FIG. 8, roller 206), while the can rim with can bulge 8 of can wall 2 on the rollers (symbolically shown in FIG. 8, roller 207) descends slides. The jug is held in this position. In this position, the leaf spring 26 held in the fixation 25 is tensioned by pivoting the flat can and the gripper plate 18. This applies analogously to a leaf spring of the other gripper plate. The pivoted position of the flat can 1 is held by the sliding beams 202, 203.

The filling of the flat can begins in this position. The flat can is in the swiveled position to the opposite Reverse path changes. It slides along the rollers that are arranged in the sliding beam. As soon as the control of the traversing device 16 recognizes that the flat can 1 has reached the reversal path, the swivel sensors are activated again with the sliding bar. This takes place in that the pneumatic cylinder 201 is now loaded with a defined force, while the pneumatic cylinder 200 is also relieved in a defined manner via the control 210. As a result of these movements of the pneumatic cylinders, the sliding bar 203 pushes the lower edge of the can in the direction of the right side of the figure (FIG. 8). The can rim slides down on the roller 206. Since the pneumatic cylinder 200 is relieved with a defined force, in return it yields to the movement of the edge of the can, which slides up on the roller 207. This interplay of the pneumatic cylinders 200, 201 is ended when the can has been pivoted in the opposite direction by the same angular amount with respect to the perpendicular perpendicular M. This change of direction of the swiveling is ended even before the flat can leaves the reversal path and moves back to the other reversal path in this swiveled position. In this process, the gripper plates are pivoted about the axis 21, ie the leaf spring 26 is also relieved and tensioned in the opposite direction.

FIG. 10 shows a principle where the flat can stands on a flat transport path 300 and this flat transport path 300 is in turn arranged in a concave transport path 301. A force F1, F2, which leads to the fact that the transport path 300 swivels within the transport path 301, is alternately applied by the swivel transmitter.

Figure 11 shows in principle another embodiment. According to the present example in FIG. 11, the swiveling is not achieved by using the swivel transmitter, but rather by forcibly guiding a flat can with the aid of a rail system (403, 404, 405). The rail system is arranged in a concavely curved transport track 40. The flat can 1 is guided alternately on the rails 403, 404 or 403, 405. There is a switch in the reversal path of the traversing (not here shown), which guides the flat can from one rail path 403, 404 to the other rail path 403, 405 and vice versa. The flat can is thus forcibly guided on the angled walls 401, 402 of the transport track 40.

Figure 13 shows a further advantageous embodiment of a swivel encoder SG. The swivel encoder SG consists of a roller 50 which is mounted eccentrically in an axis 51. FIG. 13 shows, for example, that roller 50 with axis 51 is arranged beneath the machine table 52 of the sliver storage of a stretch. A flat can 1 for traversing is arranged under the machine table 52. Furthermore, the swivel encoder SG consists of adjusting lever 53 with axis 54 and an adjusting device 55. Adjusting lever 53 with axis 54 and adjusting device 55 are arranged above the machine table 52 and do not interfere with the movement of a flat can.

The roller 50 consists in detail of an eccentric hub 56 which is arranged eccentrically in axis 51. The eccentric hub 56 is fixedly connected to the axle 51 by a detachable screw connection. The eccentric hub 56 has an elongated hole 57 with an adjustable grid. With oblong hole 57 there is the possibility of making the eccentricity of the eccentric hub 56 gradually adjustable and fixable. An adjustment of the eccentricity may be necessary, for example, if changed can formats or a change in the swivel angle are necessary.

The eccentric hub 56 has a ball bearing ring 58. A roller ring 59 with its outer surface 60 is rotatably arranged on this ball bearing ring. The axis 51 is fixed to an adjusting lever 53. The adjusting lever 53 is rotatably mounted in the axis 54. Likewise, the adjusting device 55 is mounted in the axis 54. The adjusting device 55 can be designed, for example, as a pneumatic cylinder 61 with a piston rod 62. However, other physically acting adjusting devices could also be used, for example electromechanically or hydraulically acting adjusting devices.

According to FIG. 13, the piston rod 62 is in engagement with the axis 54. The pneumatic cylinder 61 is held by an angular body 63 which is fastened on the machine table 52. The pneumatic cylinder 61 also has a connection 64 for a control line, which leads to a control device. The swivel encoder SG is arranged on both sides of the traversing path of a flat can, preferably on the reversing path. The arrangement can optionally take place in the vicinity of the lower can area or the upper can area. According to FIG. 13, the arrangement of the swivel transmitter SG in the vicinity of the upper can area oKB is shown, for example.

FIG. 15 shows a top view of the swivel transmitter SG according to FIG. 13. FIG. 15 shows that roller 50 can be swiveled and adjusted between the position shown and the dashed position P. For this purpose, the piston rod 62 must be pulled or pushed.

The operation of the swivel encoder SG from FIG. 13 is explained with reference to FIGS. 14 to 14b. FIG. 14 shows a flat jug that is empty and is placed in the changing position when the jug is changed. FIGS. 14 to 14b show an illustration with a view from the lower side of the machine table 52 onto the storage surface 10 of a flat can with an upper can edge 9.

The two rollers 50, 50 'with their eccentric axis 51, 51' are arranged schematically in the upper can area, at the upper edge 9. When changing the can, the rollers 50, 50 'are spread apart from the upper edge 9 of the flat can 1, so that there is no contact with the flat can. According to FIG. 14, the flat can is already in the change position and the rollers 50, 50 'are placed on the upper edge of the can by means of an adjusting device. The outer surface 60 of the roller ring 59 lies against the can rim 9. The preparation for a traversing position of the flat can is shown in FIG. 14a. The dashed arrangement shows the state of FIG. 14 in comparison. In comparison to FIG. 14 to FIG. 14a, the eccentrically mounted rollers 50, 50 'are pivoted together about their axes 51, 51' in the R direction by a defined amount. This pivoting of the roller 50 is realized, for example, with a push of the piston rod 62. The adjusting lever 53 rotates the eccentric hub via axis 51 56. In the opposite direction by pulling the piston rod, the pivoting for roller 50 'is realized. The result is a swiveling of the can 1 in the direction R about an axis A2 shown. In this traversing position the traversing of the flat can begins and the rotating turntable deposits the sliver in a cycloidal shape. In the position according to FIG. 14a, the flat can is oscillated up to the reversal point of the traversing path. This corresponds to Figure 14b. The rollers 50, 50 'are now steered by pulling or pushing over the respective piston rod in the opposite direction about the axes 51, 51'. The result is a swiveling of the flat can in the opposite direction L.

The SG rotary encoder can also be used in the lower can area. The SG rotary encoder requires little design effort, is inexpensive and requires little maintenance.

Claims (28)

1. A method of traversing a flat-top can (1) during the filling of a textile maching delivering sliver, wherein, during the traversing, a reciprocating movement is imparted to the flat-top can (1) below a rotating, stationary turntable (22), and the flat-top can (1) is displaceable laterally in the reversal portion of a traversing path, characterized in that the flat-top can (1) arranged stationary on a conveying path (19, 40, 301) with a substantially concave contact face (190; 401, 402) is pivoted on the said conveying path about an axis (A0, A1, A2, A3, A4, A5, A6), so that a lateral displacement of the flat-top can (1) takes place.
2. A method according to Claim 1, characterized in that the angle (α, β) formed by the flat-top can (1) is reversed by pivoting about an axis with respect to a normal position (G) in the reversal path by an equal angle with respect to the normal position (G).
3. A method according to Claim 1, characterized in that the angle (α, β) formed by the flat-top can (1) is reversed by pivoting about an axis with respect to the normal position (G) in the reversal path by an unequal angle with respect to the normal position (G).
4. A method according to Claims 2 and 3, characterized in that the angle (α, β) is variable.
5. A device for traversing a flat-top can during the filling of a textile maching delivering sliver, wherein gripper arms with gripper plates are arranged on a movable traversing device (16) and the flat-top can (1) can be arranged between the gripper plates and a pivoting device for the lateral displacement of the flat-top can (1) is arranged in the reversal path, characterized in that the pivoting device comprises pivoting pick-ups (S1, S2; SG; 50, 50'; 202, 203) and an axis (A0, A1, A2, A3) as well as a conveying path (19, 301) with a substantially concave contact face (190), wherein the flat-top can (1) is arranged on the conveying path.
6. A device according to Claim 5, characterized in that the pivoting pick-ups (S1, S2; SG; 50, 50'; 202, 203) are arranged in the vicinity of the upper area of a flat-top can (1) on both sides.
7. A device according to Claim 5, characterized in that the pivoting pick-ups (S1, S2; SG; 50, 50'; 202, 203) are arranged in the vicinity of the lower area of a flat-top can (1) on both sides.
8. A device according to Claim 5, characterized in that a conveying path (300) displaceable laterally with respect to the conveying path (19, 301) is arranged on the said conveying path (19, 301) and the flat-top can (1) is arranged on the conveying path (300).
9. A device according to Claim 7, characterized in that, following the essentially concave pattern of the contact face (190), a plurality of rollers (206, 207) are arranged opposite one another with reference to the apex line of the concave contact face (190).
10. A device according to Claim 9, characterized in that the axes of rotation of the mutually opposite rollers (206, 207) are lowered with respect to each other towards a base surface (6).
11. A device according to one or more of Claims 5 to 8, characterized in that a pivoting pick-up is constructed to form a respective displacement rod (202, 203).
12. A device according to Claim 11, characterized in that the displacement rod is at least as long as the flat-top can (1) and comprises a plurality of rollers (204, 204', 204'').
13. A device according to Claim 12, characterized in that the axes of rotation of the rollers (204, 204', 204'') are situated in a plane which is inclined with respect to the flat-top can (1).
14. A device according to one or more of Claims 5 to 7, characterized in that a pivoting pick-up is constructed to form a respective eccentrically mounted roller (50, 50').
15. A device according to Claim 14, characterized in that the roller (50, 50') comprises an eccentric hub (56) and a rotatable roller ring (59).
16. A device according to Claim 14, characterized in that the roller (50, 50') is adjustable and fixable about the axis (51, 51').
17. A device according to Claim 16, characterized in that an adjustment device (55) adjusts and fixes the roller (50, 50').
18. A device according to Claim 15, characterized in that the eccentric hub (56) has an elongate hole (57).
19. A device according to Claim 5, characterized in that the orientation of the axis (A0, A1, A2, A3), about which the flat-top can (1) is pivoted, is a longitudinal axis which is situated parallel to the traversing direction (CR).
20. A device according to Claim 19, characterized in that the axis (A1, A2) extends between the two lateral wall faces (2), (3) of the flat-top can (1) and is situated parallel to the lateral wall faces (2), (3).
21. A device according to Claim 19, characterized in that the axis (A0, A3) extends outside the flat-top can (1).
22. A device according to Claim 19, characterized in that the axis (A2) forms a centrally symmetrical longitudinal axis with respect to the flat-top can (1).
23. A device according to Claim 20, characterized in that the axis (A1) extends inside the base (7) of the flat-top can (1) and centrally between the elongate bead (8) of the can.
24. A device according to Claim 21, characterized in that the axis (A0) extends below the base (7) of the flat-top can (1).
25. A device according to Claim 21, characterized in that the axis (A3) extends beside an elongate lateral face (2, 3) of the flat-top can (1).
26. A device according to one or more of Claims 5 to 8, characterized in that the axis (A4, A5, A6), about which the flat-top can is pivoted, does not extend parallel to the traversing [direction] (CR).
27. A device for traversing a flat-top can during the filling of a textile maching delivering sliver, wherein gripper arms with gripper plates are arranged on the movable traversing device (16) and the flat-top can (1) can be arranged between the gripper plates and a pivoting device for the lateral displacement of the flat-top can is arranged in the reversal path, characterized in that the pivoting device is a conveying path (40) with a substantially concave curvature and with a rail system, and the flat-top can on the rail system can be set on the wall (401, 402) of the conveying path in an alternating manner.
28. A device according to Claim 27, characterized in that the rail system has a respective diverting point in the end portions of the conveying path, for deflecting onto the rails (403, 404) or the rails (403, 405).

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