EP2271570B1 - Device and method for filling cans - Google Patents

Description

The invention relates to an apparatus and a method for filling rectangular cans with a sliver or roving. The device comprises above the pot a turntable and arranged in a turntable belt channel and means for translational displacement of the pot. The jug facing the end of the band channel is eccentric to a rotation axis of the turntable. The turntable is displaceable with a drive about the axis of rotation in a rotary motion.

In various areas of the textile industry, in particular after spinning preparation machines, for example carding or stretching, a sliver or roving is produced, which is not further processed directly after production. For intermediate storage and easy harmless transport such a sliver is stored in a variety of container forms. A filing is usually fully automatic in pitchers. Accordingly, almost all exits of carding machines or stretching devices can be found in the form of a cyclo-shaped fiber sliver in a jug. The cans used can be either round cans or rectangular cans.

At one of the DE 101 62 717 Known device, the sliver produced by the sliver carding machine or track is taken over by the storage device with calender rolls. The sliver is introduced into a band channel which is disposed in a can to be filled over a can. The jug itself is set in a rotary motion in the case of a round can and in a translatory motion in the case of a rectangular jug. Due to the eccentric arrangement of the band channel in the turntable and the movement of the pot, the sliver is placed annularly in the pot. The movement of the pot causes the individual stored loops to be staggered. To optimize the tape storage, the reveals DE 101 62 717 a control of the rotational speed of the turntable in dependence of the pitcher movement. The disclosed measures make it possible to increase the uniformity of the stored loops. Nevertheless, accumulation of material remains in the pot due to the loop-shaped storage along the outer can wall at the outer loop diameter. When considering the mass distribution across the cross-section of a filled jug, a strong irregularity is visible. In the center region of the staggered loops, the mass of sliver deposited in the pot is low. The space utilization of a can contents through the shelf according to the known methods is insufficient. Due to the current high production speeds, there is the disadvantage, due to this insufficient filling of the can, that a frequent can change has to be made on subsequent machines. This is labor intensive and leads to undesirable production interruptions in the further processing of the sliver.

The EP 0 457 099 discloses a method which allows a high production speed of the sliver forming machine for the filling of rectangular cans. The jug is moved under the turntable in its longitudinal direction back and forth. This results in a tile-like storage of the loops formed by the rotational movement of the turntable. In order to increase the degree of filling of the pot, the pot is in its respective reversal point to a sliver thickness additionally shifted laterally by tilting to the side of the pot. Each time the pitcher movement is reversed, the jug is tilted back to the previous position so that every second row is deposited at the same location. This method also leads to an unsatisfactory mass distribution over the cross section of the pot.

Another known device according to the DE 102 05 061 tries to counteract the disadvantages of using cans by doing without them. By the disclosed device the sliver is deposited on a base, whereby a so-called band package is formed. Such formed tape packages have the disadvantage that when moving the tape pack from one machine to the next, the sliver unprotected by the external influences, which can lead to the falling of the tape package. The use of such tape packages therefore requires a high logistical effort.

The GB 2 048 321 A discloses an apparatus according to the preamble of claim 1 and a method according to the preamble of claim 8.

Based on the known state of the art, the object is therefore to provide a device for filling cans, which is a mass distribution-optimized Can filling and thus a high uninterrupted tape mass in a pot allows.

The object is solved by the features in the characterizing part of the independent claims. To solve the problem it is proposed to provide a device in which the translational displacement of the pot during filling in two mutually perpendicular axes is feasible, wherein the axes are arranged perpendicular to the axis of rotation of the turntable. The cans to be filled have an aspect ratio of 2 or smaller, preferably 1.5.

To solve the problem, a new device for filling cans is proposed. The device for filling rectangular cans with a sliver or roving comprises above the pot a turntable and arranged in a turntable belt channel and means for translational displacement of the pot. The jug facing the end of the band channel is arranged eccentrically to a rotational axis of the turntable and the turntable is displaceable with a drive about the axis of rotation in a rotary motion. As a result, cans with an aspect ratio of 2 or smaller, more preferably 1.5, filled and a translational displacement of the pot during filling in two mutually perpendicular axes feasible, the axes are arranged perpendicular to the axis of rotation of the turntable.

The cans used in this case differ in their layout from the conventional cans. The round or rectangular cans used today are poorly utilized in their filling volume by stacking up of almost identical storage rows of slivers. The mass distribution across the cross section of the cans is irregular. In round cans, for example, results at the outer edge of a high mass through the superimposed loops, in the can center, however, the mass of the deposited sliver is virtually zero. The rectangular cans used today are used in a narrow elongated shape and are only slightly larger in width than the diameter of the loops of the sliver, which are stored therein.

By contrast, the cans to be filled according to the invention have a smaller aspect ratio. This makes it possible to store several sliver loops next to each other or at least offset from each other in the pot. The pot is moved under the turntable in two mutually perpendicular axes. By the rotated turntable, the sliver is placed in loops in the pot, wherein the below the turntable Hinwegbewegen the can to be filled results in an offset of successively deposited loops, so that a roof tile-like stacking of the sliver loops is created. Due to the possibility of translational displacement of the jug in two axes, the sliver loops can be stacked like a tile stacked in rows, which are juxtaposed, perpendicular to each other or even with a lateral offset to each other.

The movements of the pot are characterized by strong accelerations in the reversal points or changes in direction, which is necessary to avoid unwanted material accumulation by slowing down the movement in one direction and subsequent acceleration in another direction. The sliver supply is doing with a constant resp. operated, respectively controlled by the movements of the pot independent speed. The jug is held by a jaw carrier to master these movements. This is equipped with at least one drive and a fixation of the pot.

Such a jaw carrier can be, for example, a lateral clamping of the jug. The pot can be fixed by specially provided brackets or a special shape of the pot on the jaw carrier. However, the can carrier is also conceivable as a kind of table below the can. The jug is placed on this table, with a fixation on the jaw carrier by lateral guides, provided for brackets or, for example, a blockage located on the can chassis can be provided.

The jaw carrier itself is set in motion by at least one drive. The drive can be electrical, pneumatic or hydraulic design. When using only one drive, the second direction of movement can be achieved via a transmission. When using couplings can be carried out in different directions with one drive only independent movements of the jaw carrier.

In a preferred embodiment, two separate drives are provided for the translational movement of the jaw carrier and thus the jug in the two axes. Thus, all movements in the plane of the two axes can be controlled.

Can carrier and jug can also be matched to one another in their construction so that the fixing of the jug on the jaw carrier is designed to be positive. For example, exceptions may be provided in the bottom of the jug so that the jug carrier can be inserted into the jug or exception. It is conceivable, a similar to the forklift operating principle.

A control associated with the device results in a mass distribution which can be optimized over the cross section of the can, in that with the control the rotational movement of the turntable and the movements of the can carrier and thus the displacement of the can can be coordinated with one another. Characterized in that the sliver is stored in loops, results during one half of a turn of the turntable one with the direction of deposition of the sliver revolving displacement of the pot. In the other half of the turn of the turntable results in a direction opposite the direction of deposition of the sliver offset displacement of the pot. With a change in direction of the displacement of the pot, the conditions of the movement of pot and sliver change. This irregularity can also be compensated by the controller. In this case, it is possible to adapt or change the speed of the turntable or the movement, or their direction, of the jaw carrier.

The filling of the rectangular cans is carried out such that during filling a translational movement of the cans takes place in two mutually perpendicular axes and the loops stacked roof tiles offset stacked in rows with an offset next to each other or superimposed. To increase the stability of the deposited slivers, the rows can also be arranged at an angle of 90 ° to each other. The various arrangement options can be varied during a filling process. The dislocation and arrangement of the rows is chosen so that in the pot a uniform mass distribution over the cross section results and thus a good utilization of the available space content of the pot.

Advantageously, the arrangement of the deposited sliver is selected so that the sliver beginning and end of a filled jug are always at a defined location within the pot.

The cans to be filled in the device according to the invention have an aspect ratio of three or less, preferably two or less, more preferably 1.5. The shorter of the two lengths of the cans to be filled is at least 1.5 times, preferably at least twice, a diameter of the deposited sliver loops produced by the eccentric arrangement of the band channel.

The cans have a height-adjustable floor, which allows a compact filling. The floor can be moved by internal devices, such as springs, or by an intervention of mounted outside of the pot devices in height.

Due to the offset from each other rows of tile-like stacked sliver loops results in a high stability of the tape storage, which means that a chalk-free filing of the sliver is possible. The device is identical in its construction, wherein the can carrier, for example, receives a bottom instead of a jug on which the sliver is deposited. The actual jug consists in this embodiment of a floor and has no walls. The movement of the inner floor in a conventional pot is taken over by a Kannenlosen storage by the can carrier. In a further embodiment, the use of a floor can be dispensed with with appropriate design of the jug carrier. For example, the jaw carrier is equipped with a conveyor belt so that the discarded sliver loops can be transported under the turntable away. The measures provided for the pot dimensions apply in this case for the part of the can carrier, which is used to store the sliver.

Fig. 1

eine schematische Darstellung einer Faserbandablage nach einer Karde nach dem Stand der Technik;

Fig. 2

eine längliche Rechteckkanne nach dem Stand der Technik mit Darstellung der Massenverteilung über den Querschnitt;

Fig. 3

eine Rundkanne nach dem Stand der Technik mit Darstellung der Massenverteilung über den Querschnitt;

Fig. 4

eine Seitenansicht in schematischer Darstellung einer Ausführungsform der Vorrichtung;

Fig. 5

eine Draufsicht in schematischer Darstellung der Ausführungsform nach Fig. 4 an der Stelle X-X;

Fig. 6

eine schematische Darstellung einer Rechteckkanne nach der Erfindung mit Darstellung der Massenverteilung über den Querschnitt;

Fig. 7a-7c

eine schematische Darstellung möglicher Anordnungen der Reihen von Faserbandschlaufen in einer Rechteckkanne nach der Erfindung.

The invention will be explained in more detail by way of example by means of embodiments with reference to the drawings. Show it:

Fig. 1

a schematic representation of a sliver tray after a card according to the prior art;

Fig. 2

an elongated rectangular can according to the prior art with representation of the mass distribution over the cross section;

Fig. 3

a round can of the prior art with representation of the mass distribution over the cross section;

Fig. 4

a side view in a schematic representation of an embodiment of the device;

Fig. 5

a top view in a schematic representation of the embodiment according to Fig. 4 at the point XX;

Fig. 6

a schematic representation of a rectangular can according to the invention with representation of the mass distribution over the cross section;

Fig. 7a-7c

a schematic representation of possible arrangements of the rows of sliver loops in a rectangular can according to the invention.

FIG. 1 shows a side view of a known prior art arrangement of a sliver tray 2 after a card 1, in a schematic representation. The carding machine 1 delivers as a sliver forming machine in the spinning preparation a sliver 3. The sliver 3 is after leaving the card 1 via pulleys 4 of the Sliver tray 2 supplied. About two calender rolls 5, the sliver 3 is passed into the band channel 6. The band channel 6 is arranged in a turntable 7. The turntable 7 is arranged above a can 10 to be filled.

The jug 10 facing the end of the band channel 6 is arranged eccentrically in the turntable 7. In the FIG. 1 can 10 shown is a round can. This is on a turntable 11. The axis of rotation 12 of the turntable 11 is offset from the axis of rotation 8 of the turntable 7. The offset is determined by the storage system. Which is either a tray around the center of the pot or a tray on the center of the pot. Due to the eccentric arrangement of the band channel 6, the sliver 3 is stored in simultaneous rotation, 9, 13 of the turntable 7 and the turntable 11 in loops, which are offset like a roof tile, into the can 10.

Instead of the round can 10 can be used in the same arrangement, a rectangular can. In this case, the turntable 11 would be replaced by a translational reciprocating device. The deposited sliver loops form a straight row, with each back-and-forth movement another row of sliver loops is placed over it.

FIG. 2 shows an elongated rectangular can 20 in a schematic representation. Also shows FIG. 2 a representation of the mass distribution over the cross section 21 of a full pot 20. The elongated rectangular cans 20 according to the prior art have a first length A, which is a multiple of a second length B, and a height C. The second length B corresponds to the diameter the discarded sliver loops. Along the first length A, the pot 20 below the turntable (7, Fig. 1 ) moved back and forth. There are also known cans 20 in which the second length B is wider than the diameter of the sliver loops, so that the fiber sliver loops stored in one direction can be offset from the sliver loops deposited in the other direction by the thickness of the sliver. The offset is achieved by a lateral tilting of the can 20 in the reversal of the movement device.

As in the diagram in FIG. 2 can be seen, the mass distribution over the cross section 21 of the pot 20 is uneven. In the diagram in the FIG. 2 on the ordinate the mass M of the deposited sliver and on the abscissa the length B of the cross section 21 is plotted. The area E enclosed below the curve corresponds to the deposited total mass of sliver in the pot. By the deposition of the sliver in loops, a dense accumulation of material on the outer sides of the cross section 21 is formed in the middle of the cross section 21, represented by the central axis 22, however, results in a hole in the mass distribution. The mass distribution shown is the result of filling an elongated rectangular can 20, regardless of whether it is tilted in the reversal of pitcher displacement or not.

FIG. 3 shows a round pot 23 in a schematic representation. Also shows FIG. 3 a representation of the mass distribution over the cross section 24 of a full pot 23 in the form of a diagram. On the ordinate, the mass M of the sliver deposited in the pot and on the abscissa, the length D of the cross section 24 is applied.

The round cans 23 according to the prior art have a diameter D and a height C. As under FIG. 1 already described, the round cans are filled during a rotating movement. The mass distribution shown in the diagram arises when filling the round can around the center 25 of the pot. In this case, the sliver loops generated by means of the turntable are smaller in diameter than half the diameter D of the round can 23. In this way, the sliver loops are deposited along the outer edge of the can like a roof tile overlapping one behind the other. As can be seen from the diagram, a hole results in the region of the central axis 25 of the cross section 24. In the region of the central axis 25, the mass of the deposited sliver is thus equal to zero.

From the diagrams of the Figures 2 and 3 If the utilization of the can volume is evident, the utilization corresponds to the ratio of the area E enclosed by the mass distribution curve to the area of the cross section 21 in the case of the rectangular can 20. Accordingly, this applies to the surface F and the cross section 24 of the round pot 23rd

FIGS. 4 and 5 show a schematic representation of a side view and a plan view at the point XX of FIG. 4 an embodiment of the device according to the invention. The sliver is taken over by a sliver-forming machine and fed to the turntable 31 via two calender rolls 30. In the turntable 31, the sliver passes through a band channel (not shown), which is arranged eccentrically extending in a known manner with respect to the axis of rotation 42 of the turntable 31. By the rotational movement 43 of the turntable 31 with the inner band channel in combination with the conveying movement of the sliver and the movement 44, 45 of the pot 33 are stored, also in the known manner, sliver loops 32 in the pot 33. The arranged below the turntable 31 can 33 is a rectangular can with an inner upwardly displaceable bottom 37. To move the bottom 37 is in FIG. 4 shown an arrangement of springs 38 which push the bottom 37 in the empty state of the pot 33 upwards. Due to the load of the fiber sliver deposited in the can 33, the bottom 37 is gradually pressed down during filling. By this arrangement, the sliver is prevented from falling deep into the can 33. In FIG. 4 on the right is a jug 33 during filling and left an already full jug 40 shown. In the representation of the full pot 40, the springs 38 are shown in compressed form. The cans 33, 40 also have a chassis 41, which allows a displacement of the full or empty cans 33, 40 without technical aids. Usually, the trolleys are formed in all pitchers of three or more wheels.

The can 33 to be filled is arranged on a jaw carrier 35 and fixed in position by suitable means. In FIG. 4 and FIG. 5 For example, mechanical stops are shown as fixation 36. The jug 33 is lifted or pushed onto the jaw carrier 35 before being filled, and then secured against displacement by the fixation 36. The fixation 36 as well as the insertion of the empty can 33 in the device or the ejection of a full pot 40 from the device can be done manually or automatically. An automatic movement cans 33, 40 or the fixation 36 can be done motor, hydraulic or pneumatic. The jaw carrier 35 itself is displaceable in two directions 44, 55. In the FIGS. 4 and 5 the two extreme positions of the can 33 to be filled are shown. The can carrier 35 is during the filling in relation to the top view in FIG. 5 moved from the bottom right position depending on the filling under the turntable 31 in the two directions of movement 44, 45 to position 39 top right. The movements 44, 45 of the can carrier 35 and thus also the can 33 follow a filling program which optimizes a mass distribution in the can 33 to be filled via the cross section of the can 33.

The drive of the can carrier 35 can be done hydraulically or pneumatically or preferably by an electric motor. If only one drive is used, the second direction of movement 45 can take place via a gear and a clutch of this one drive without synchronizing with the first direction of movement 44. Preferably, the two directions of movement 44, 45 of the can carrier 35 are carried out by two separate drives.

FIG. 6 shows a rectangular can 26 according to the invention in a schematic representation. Also shows FIG. 6 a representation of the mass distribution over the cross section 27 of a full can 26 according to the invention. The rectangular cans 26 according to the invention have a first length A, which is a triple or less, preferably a double or less of a second length B, and a height C. More preferably, the first length A is one and a half times the length B. This corresponds a usual in logistics aspect ratio, which also have the widely used Euro pallets. The second length B is greater than the diameter of the stored sliver loops, wherein the shorter of the two lengths A, B of the cans 33 to be filled is at least 1.5 times, preferably at least twice a diameter of the discarded sliver loops produced by the eccentric arrangement of the band channel , This allows by moving the can 26 during filling an optimization of the mass distribution of the deposited sliver in the can 26. The can 26 is equipped with a known sliding floor and with a chassis (not shown).

As in the diagram in FIG. 6 can be seen, the mass distribution over the cross section 27 of the can 26 is uniform. In the diagram in the FIG. 6 on the ordinate the mass M of the deposited sliver and on the abscissa the length B of the cross section 27 is plotted. The trapped below the curve surface G corresponds to the total deposited mass of sliver in the pot 26. By the filing of the sliver in loops, the tile-like stacking of the loops one above the other in rows and a staggered arrangement of the rows on the base of the pot 26 creates a dense accumulation of material neither on the outside nor in the middle of the cross section 27. Also, the total mass G of the deposited sliver measured on the available volume of the pot is significantly higher than is the case in the known filling method.

FIGS. 7a to 7c show in a schematic representation possible arrangements of the rows of tile-like stacked sliver loops in a jug according to the invention. Due to the length ratios of the pot and the possibility to move the pot in two directions of movement below the turntable, an optimization of the mass distribution over the cross section of the can of the deposited sliver can be achieved. The in the FIGS. 7a to 7c Arrangements shown can be used during a filling process of a single pot. For example, the sliver is repeated in a first layer after the Figure 7a in a second layer after the FIG. 7b and in a third layer after the FIG. 7c placed in the pot.

Legend

1

teasel

2

Sliver tray

3

sliver

4

guide rollers

5

calender rolls

6

band channel

7

turntable

8th

Rotary axis turntable

9

Rotary turntable

10

pot

11

turntable

12

Rotary axis turntable

13

Rotary motion turntable

20

oblong rectangular jug

21

Cross section of the elongated rectangular can

22

Central axis of the cross section 21

23

round can

24

Cross section of the round can

25

Central axis of the cross section 24

26

rectangular can

27

Cross section of the rectangular can

30

calender rolls

31

turntable

32

Sliver loop

33

pot

34

Sliver tray

35

pot carrier

36

fixation

37

Movable floor

38

feather

39

Outer position of the pot

40

Full pot

41

landing gear

42

Rotary axis of the turntable 31st

43

Rotary movement of the turntable 31st

44

First direction of movement

45

Second direction of movement

A

First length of the pot

B

Second length of the pot

C

Height of the pot

D

Diameter of the pot

E, F, G

Mass of the deposited sliver

M

mass distribution

Claims (8)

1. Device for filling rectangular cans (33) with a fiber band (3) or slubbing, whereby the device comprises a turndisk (7, 31) above the can (33) and a band channel (6) located in the turndisk (7, 31) and means for the translatory displacement of the can (33), whereby the end of the band channel (6) that is facing the can (33) is located eccentric to an axis of rotation (8) of the turndisk (7, 31), whereby the turndisk (7, 31) can be displaced into a rotating movement (9) around the axis of rotation (8) with a drive, cans (33) can be filled with a lengths relationship (A/B) of 2 or smaller, especially preferred 1.5, and the translatory displacement of the can (33) can be performed during the filling process on two axes (44, 45) that are located perpendicular with respect to each other, and whereby the axes (44, 45) are located plumb-vertical with respect to the axis of rotation (8) of the turndisk (7, 31), characterized by, that the device comprises a control, whereby the rotating movement (9) of the turndisk (7, 31) and the displacement of the can (33) can be controlled in such a way that a uniform distribution of mass (M) can be created in a filled can (26, 40) that extends over its cross section (27) thereby, that fiber band loops (32) formed as a result of the rotating movement (9) of the turntable (7, 31) are deposited in rows like roof shingles with an offset between the rows, whereby the offset is smaller than the fiber band loops (32).
2. Device according to Claim 1, characterized by, that the shorter of the two lengths (A, B) of the cans (33) to be filled is at least 1.5 times, preferably at least double of the diameter of the deposited fiber band loops (32) that is generated by the eccentric location of the band channel (6).
3. Device according to Claim 1 or 2, characterized by, that the means for the translatory displacement of the can (33) comprise a can carrier (35) with at least one drive and a fixation (36) of the can (33) at can carrier (35).
4. Device according to Claim 3, characterized by, that the can carrier (35) is located underneath the can (33).
5. Device according to at least one of claims 3 or 4, characterized by, that the can carrier (35) is provided with two separate drives for the translatory displacement of the can (33) on the two axes (44, 45).
6. Device according to at least one of claims 3 to 5, characterized by, that the fixation (36) of can (33) at can carrier (35) is designed form-fit.
7. Device according to one of the preceding claims, characterized by, that the can (33) that is to be filled consists of a bottom and does not have walls.
8. Method for filling rectangular cans (33) with a fiber band (3) or slubbing by means of a band channel (6) and means for the translatory displacement of the can (33), whereby the band channel (6) is located in a turndisk (7, 31) above the can (33) and the end of the band channel (6) facing the can (33) is located eccentric to an axis of rotation (8) of the turndisk (7, 31), and whereby the turndisk (7, 31) is displaced into a rotating movement (9) around the axis of rotation (8) with a drive, as a result of which the fiber band (3) is deposited in fiber band loops (32) into the cans (33), whereby the translatory displacement of the cans (33) takes place during the filling on axis (44, 45) that are located perpendicular with respect to each other and the fiber band loops (32) are stacked like roof shingles on top of each other in rows, with an offset next to each other or above each other, the offset between the rows is smaller than the fiber band loops (32) and the offset and the configuration of the rows deposited adjacent to each other or on top of each is selected in such a way that that a uniform distribution of mass (M) results in can (33) that extends over the cross section (27).

Images