WO1990011242A1

WO1990011242A1 - Device for depositing a sliver into a sliver can

Info

Publication number: WO1990011242A1
Application number: PCT/EP1990/000437
Authority: WO
Inventors: Hermann Gasser; Karl Curiger
Original assignee: Hollingsworth Gmbh
Priority date: 1989-03-17
Filing date: 1990-03-16
Publication date: 1990-10-04
Also published as: DE3908833A1

Abstract

The invention relates to a device for depositing a sliver into a sliver can with a basic frame having a can post arranged above the sliver can with at least one turntable and a drive to move the sliver can in relation to the can post. Such a device is to be designed for universal use. This is achieved in that two opposed rail sections (13) laterally framing the sliver can (6) are attached to the basic frame (1), at least one of them having a conveyor belt (10, 11) travelling horizontally whose web facing the outer surface of the sliver can (6) is supported towards the sliver can (6), where the distance between the rail sections (13) is such that a sliver can (6) lying between the rail sections is always pressed against the conveyor belt (11).

Description

Device for depositing the tape into a spinning can

The invention relates to a device for depositing sliver into a spinning can, with a basic arrangement which has a can stock arranged above the spinning can with at least one rotary switch and a first drive for feeding a spinning can under the can stock, the drive of which has at least one horizontal about vertical axes encircling, drivable conveyor belt, wherein the spinning can on the opposite side of the conveyor belt is pressed against the conveyor belt by a railing.

From DE-A-12 91 663 and BE-A-76 12 81 can changers are known, by means of which the spinning cans can be fed to a can stock, from which the sliver deposit then takes place into the spinning can. The jug usually has two rotary knobs that are arranged one inside the other and can be rotated against each other. By rotating the two rotators against each other, a cycloidal tape deposit is possible. A pitcher with two eccentrically arranged rotary knobs is relatively complex and only allows a predefined cycloidal tape storage.

In addition, devices are known from practice in which the jug can has a simple rotating element and the spinning can is arranged eccentrically to the center of the rotating element and rotated about its own axis. In this way, it is also possible to achieve a cycloidal tape deposit, which, however, is also essentially predefined. In addition, there are drives on the bottom of the basic control in the control provided that cause the spinning can to rotate. As a result, the spinning can must be pushed on its way under the cane mostly on a ramp in which the Ant riebsmi tel are housed for driving the spinning can. As mentioned, the rotary drive of the spinning can allows only its own rotation about its own axis, so that the known device is only suitable for cylindrical spinning cans. Moreover, the latter devices always require special measures with which the spinning cans must be placed under the can stick before the rotary drive can be used.

It is therefore an object of the present invention to improve a device of the type mentioned in such a way that the structural outlay is reduced, it being possible to achieve greater variations in the pattern of laying down.

This object is achieved according to the invention in that the basic arrangement further comprises a second drive for moving the spinning can below the can stick during the belt bending, and in that the second drive is formed by two sections of the conveyor belt, which laterally frame the spinning can and extend underneath the can stick of the railing is formed, the distance between the two sections being selected such that the spinning can is always pressed against the conveyor belt section of the second drive.

In this solution, the first and the second drive practically form a unit. The spinning can is transported by the conveyor belt of the first drive to almost below the can rack, the conveyor belt section of the second drive being the final one Positioning under the pitcher takes over. With the same conveyor belt section, however, the movement of the spinning can during the belt bending is generated, so that the conveyor belt section of the second drive has a dual function. The straightforward design of the two opposite sections of the conveyor belt and the railing makes it possible to fill rectangular spinning cans in addition to cylindrical spinning cans, which are then not rotated by the attacking conveyor belt but are moved back and forth in the longitudinal direction. A particular advantage of this solution is that all the drive means for the spinning can, ie both for transporting the spinning can under the can stock and for moving the spinning can during the band bending, can act in the upper region of the spinning can, so that the bottom underneath the can stock on which the spinning can stands, can be kept free of further drive means. Therefore, it is not necessary that a ramp is arranged below the can, on which the spinning can must be raised above floor level.

From GB-A-20 48 321 a device for moving a spinning can during band bending is known, in which the spinning can is set in rotation by opposing drive belts. However, the drive belts have a shape adapted to the lateral surface of the spinning can and are only able to rotate the spinning can. The belts, on the other hand, are not able to carry out a translational movement of the can, so that the can has to be brought into position by hand, after which the two drive belts are then brought into contact with the outer surface of the spinning can via pivot levers. For a greater variation in terms of the pattern To reach the tape storage, the entire rotary drive is arranged on a platform that can perform periodic translatory movements via lever linkages. In contrast to this, in the subject matter of the present invention, both the translatory and rotatory movements of the spinning can and the positioning of the spinning can under the can stick can be achieved by the straightly extending conveyor belt sections without additional drive means having to be provided.

According to a preferred embodiment, both sections have a drivable conveyor belt. This makes the device's area of application even more universal. Depending on how the conveyor belts are driven, various movements of the spinning cans can be achieved.

In this context, it is advantageous if a controller is provided for driving the two conveyor belts.

Although both conveyor belts could be coupled via a mechanical gear train, driving the two conveyor belts can be made even more flexible if each conveyor belt has its own drive.

If you want to provide a cycloidal belt storage in a cylindrical spinning can, it is advantageous if the control is designed so that the two conveyor belts can be driven in opposite directions. The spinning can then only rotates about its vertical axis. The control of the two conveyor belts can also be connected to a monitoring system which, for. B. has light barriers, which monitor whether the Spinning can migrates under the can stick. When using Sync ronmotor, such a control is not absolutely necessary.

If the controller is designed so that at least one conveyor belt can be driven intermittently, z. B. the rotational movement of the sliver can overlay a translatory movement. This means that it is possible in this way to fill in the hole created in the cycloidal belt deposit in the center of the spinning can. The intermittent belt drive deliberately provokes the spinning can to migrate within certain limits.

If the control is also designed so that both conveyor belts can be driven back and forth in the same direction, the device can also be used in a favorable manner for cuboid spinning cans. However, it is also possible to provide a jug stick with a double rotary switch, i.e. one that is already carrying out a cycloidal tape deposit, and to translate a cylindrical spinning can back and forth in order to cover the central hole in the spinning can generated by the cycloidal tape deposit.

A structurally particularly simple and stable arrangement for the conveyor belts results if the conveyor belt is supported by a support body formed from two superposed U-profiles with their open sides facing one another, which is arranged between the two runs of the conveyor belt and on the latter A deflection roller is arranged for each end of the conveyor belt, at least one of which can be driven.

A simple way of guiding the conveyor belts cause by the two U-profiles are spaced one above the other, and that approximately T-shaped sliders are attached to the inside of the conveyor belt, which engage with the ends of their crossbar the mutually facing legs of the spaced-apart U-profiles.

It is also favorable for the drive of the spinning cans if the conveyor belt has a high coefficient of friction towards its outside.

For the same reason, it is also advantageous if a radially elastically compressible ring is arranged on the outer circumference of the spinning can at the level of the conveyor belt. This ring is preferably made of plastic, especially a closed-cell foam. In addition to increasing the coefficient of friction, this plastic ring also has the task of compensating for certain irregularities in the outer circumference of the spinning can. When several spinning cans are pushed together, the plastic ring also acts as a bumper. Due to the different coloring of the plastic rings, they can also be used for marking purposes.

In the following an embodiment of the invention is shown in more detail with reference to a drawing. Show it:

1 is a front view of a device according to the invention,

2 is a sectional view of the device along the line II-II,

Fig. 3 in the same view as Fig. 2, the device Fig. 1, but in a different operating condition, and

4 shows a section through a conveyor belt along the line IV-IV from FIG. 2.

In the exemplary embodiment shown here, the device according to the invention is combined with a special can changer, by means of which combination the advantages of the device according to the invention are even better.

As can be seen from the drawing, the device comprises a base frame 1 with a can rack 2 arranged at the top in a manner known per se. The fiber sliver 3 is fed from above into the can rack 2 and, depending on the embodiment variant, via a single, eccentrically arranged rotary switch 4 (cf. Fig. 2) or two rotating turntables 4 and 5 (see FIG. 3). A spinning can can be found below the can

6 are positioned, in which the tape is then placed.

From the top views in Fig. 2 and 3 it is particularly well seen that the device with a can changer

7 is combined. This can changer 7 consists of a horizontally rotating, drivable conveyor belt 8 and a railing 9 located approximately at a distance from a spinning can diameter. The railing can be pivoted upwards in a manner not shown here, so that the spinning cans can be fed in laterally. The arrangement is described in detail in a patent application filed by the applicant at the same time.

From the speed profile shown in Fig. 2 it is evident that in the can changer 7 the The translator i see the movement of the spinning cans 6 in the transport direction T an internal rotation of the spinning cans ό uπ is superimposed on their vertical axis. In the embodiment shown here, the Kannenwechsel ler 7 is so obsessed that four empty spinning cans 6 can be stored. In the transport direction T, the device according to the invention follows the Kannenwec sLe r 7. The device according to the invention for laying down eggs also has horizontally rotating, driven conveyor belts 10 and 11. The distance between the two conveyor belts 10 and 11 is selected so that a spinning can 6 located between the conveyor belts 10 and 11 is always pressed against the conveyor belts. This is advantageously achieved in that a radially elastically compressible ring 12 made of a closed-cell plastic foam, such as foam rubber, is attached to the outer circumference of the spinning can. This ring lies at the level of the conveyor belts 10 and 11 (see FIG. 1). The conveyor belts 10 and 11 are guided on support bodies 13 which are fastened to the base frame 1 of the device 1.

4 shows a section through such a conveyor belt arrangement. It can be seen that the support body 13 consists of two U-shaped profiles 14 which are arranged one above the other and face one another with their open sides. The support body 13 is arranged between the inner sides of the two runs of the respective conveyor belt, here conveyor belt 11. The two U-profiles are spaced one above the other in such a way that the free leg ends of the U-profiles facing one another delimit a gap 15. On the inside of the conveyor belt 11 approximately T-shaped sliders 16 are attached, which pass through the gap 15 with their longitudinal web, and with the ends of their Transverse the mutually facing legs of the spaced-apart U-profiles 14 behind. As a result, both horizontal and vertical guidance of the conveyor belt 11 is achieved.

As can be seen better from FIGS. 2 and 3, 13 deflection rollers 17 to 20 are arranged at the ends of the supporting bodies, of which at least one deflection roller 17, 19 can be driven for each conveyor belt 10 or 11. The drive takes place via so-called synchronous motors 21 and 22, which are connected via control lines 23 and 24 to a controller 25. For driving the conveyor belt 8 of the can changer 7, a motor 26 is connected to the control 25 via a control device 27.

Furthermore, the device has light barriers 28, 29 and 30. The light beam 31 of the first light barrier 28 is aligned obliquely to the transport direction T on the device according to the invention at the facing end of the can changer 7 and serves to detect the next spinning can to be filled. If the light beam 31 of the light barrier 28 is interrupted, the controller 25 assumes that an empty spinning can 6 is ready. The light beams 32 and 33 of the two light barriers 29 and 30 limit a tolerance range within which a spinning can 6 may move below the can stick 2. Since in the two embodiment variants presented here a cycloidal tape deposit is to be achieved in a cylindrical spinning can 6, the tolerance range is naturally chosen to be relatively small. As soon as one of the two light beams 32 and 33 is interrupted, the control 25 is informed via corresponding signal lines 34 and 35 that the spinning can leaves the tolerance range in a predetermined direction, as a result of which countermeasures are taken Motors 21 and 22 is initiated.

It remains to be added that the outside of the conveyor belts 10 and 11 have a high coefficient of friction. In particular in connection with the provision of the radially elastically compressible ring 12, the use of a rough surface of the conveyor belts has proven to be favorable.

The mode of operation of the device according to the invention will now be explained in more detail below.

If a new spinning can 6 is to be transported under the can stock 2, the conveyor belt 8 of the can changer 7 and the conveyor belt 10 are first driven in the same direction and at the same speed t, while the conveyor belt 11 is stopped. The spinning can is transported until the light beam 33 of the light barrier 30 is interrupted. The controller 25 then switches off the motor 26.

Depending on the design variant, the desired drive of the two conveyor belts 10 and 11 now takes place. First, the design variant according to FIG. 2 will be explained.

In the embodiment variant according to FIG. 2, together with the switching off of the motor 26 by the control 25, the motor 22 is switched on for driving the conveyor belt 11. However, the two strands of the two conveyor belts 10 and 11 facing the spinning can 6 run in opposite directions, so that the spinning can 6 is only rotated about its own vertical axis without performing translatori see movements. In Kannenstock 2 only one needs to be eccentric Spinnkanne 6 aligned turntable to be provided, which rotates about its own axis. By superimposing the rotation of the turntable 4 and the rotation of the spinning can 6, a cycloidal depositing of the sliver into the spinning can 6 is achieved. Since, in the case of the cycloidal belt deposit, an unfilled area, a so-called hole, remains in the center of the spinning can 6, the two conveyor belts 10 and 11 can be driven intermittently. This means that a conveyor belt is stopped for a short time or is driven faster, whereby the rotatory movement of the spinning can is superimposed on a translatory movement in or against the transport direction T. As a result, the hole in the center of the spinning can can be covered, so that the filling level of the spinning can can be further improved.

When the spinning can to be filled is full, only the motor 22 needs to be stopped via the control 25 and the motor 26 of the conveyor belt 8 of the can changer 7 has to be switched on while the motor 21 of the conveyor belt 10 continues to run. The filled spinning can 6 is thus moved out of the device, while an empty spinning can 6 is immediately moved under the can stick 2. It is not even necessary to separate the sliver at the transition from one spinning can to the other, so that the can change can be carried out fully automatically.

The embodiment variant according to FIG. 3 differs from the embodiment variant described above essentially only in that the controller 25 reciprocates the two strands of the two conveyor belts 10 and 11 opposite the spinning can 6 to be filled. As a result, the spinning can 6 only a translatori see movement in and against the transport direction T. In order to achieve a cycloidal band deposit, in this embodiment variant the can holder 2 has a large rotary valve 5, which is arranged essentially concentrically to the spinning can 6, and a smaller rotary controller 4 arranged eccentrically therewith. The smaller rotary valve 4 thus rotates once around its own axis and then around the axis of the large turntable 5. The reciprocating movement of the spinning can 6 under the can stock 2 results in a more uniform placement of the sliver in the spinning can 6, the cycloid-type hole in the center of the spinning can being covered. The back and forth movement of the spinning can 6 is controlled by the two light barriers 29 and 30. The filled spinning can 6 is disposed of in the same way as in the embodiment variant described above.

Instead of a circular sliver can, it is also conceivable to provide a uerschnitt in ^Q rectangular spinning can, which is reciprocated by the two conveyor belts 10 and 11 under the can coiler 2 and forth.

Claims

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1. Device for depositing the tape into a spinning can, with a base frame that has a can stock (2) arranged above the spinning can (6) with at least one rotary actuator (4) and a first drive for feeding a spinning can (6) under the can stock (2) The drive comprises at least one drivable conveyor belt (8) which runs horizontally around vertical axes, the spinning can (6) on the side opposite the conveyor belt (8) being pressed against the conveyor belt (8) by a railing (9), thereby characterized in that the base frame also has a second drive for moving the spinning can while the tape is being laid below the can stock (2), and in that the second drive is arranged by two, framing the spinning can (6) laterally, extending in a straight line, below the can stock (2) Sections (13) of the conveyor belt (8, 10) and the railing (9) is formed, the distance between the two sections (13) is selected so that the spinning can (6) is always pressed against the conveyor belt section (13, 10) of the second drive.

2. Device according to claim 1, characterized in that both sections (13) have a drivable conveyor belt (10, 11).

3. Device according to claim 1 or 2, characterized by a controller (25) for driving the two conveyor belts (10, 11).

4. Device according to one of claims 1 to 3, characterized in that each conveyor belt (10, 11) has its own drive (21, 22).

5. Device according to one of claims 1 to 4, characterized in that the control is designed so that the two conveyor belts (10, 11) can be driven in opposite directions.

6. Device according to one of claims 1 to 5, characterized in that the controller (25) is designed such that at least one conveyor belt (10, 11) can be driven intermittently.

7. Device according to one of claims 1 to 6, characterized in that the controller (25) is designed such that both conveyor belts (10, 11) can be driven back and forth in the same direction.

8. Device according to one of claims 1 to 7, characterized in that the conveyor belt (10, 11) is supported by a support body (13) formed from two superimposed and with their open sides facing U-profiles (14) is arranged between the two runs of the conveyor belt (10, 11) and at the ends of which a deflection roller (17, 18, 19, 20) for the conveyor belt (10, 11) is arranged, at least one of which (17, 19) can be driven .

9. Device according to one of claims 1 to 8, characterized in that the two U-profiles (14) are arranged at a distance above one another, and that on the inside of the conveyor belt (10, 11) approximately T-shaped sliders (16) attached are, which engage with the ends of their crossbar the mutually facing legs of the spaced U-profiles (14).

10. Device according to one of claims 1 to 9, characterized in that the conveyor belt (10, 11) has a high coefficient of friction to its outside.

11. Spinning can for a device according to one of the preceding claims, characterized in that a radially elastically compressible ring (12) is attached to the outer circumference of the spinning can (6) at the level of the conveyor belt (10, 11).

12. Spinning can according to claim 11, characterized in that the ring (12) consists of plastic, in particular a closed-pore plastic foam.