WO1992004267A1

WO1992004267A1 - Method of transporting spools or bobbins between a spooler and a spinning machine

Info

Publication number: WO1992004267A1
Application number: PCT/EP1991/001685
Authority: WO
Inventors: Lothar Eichler; Uwe Sonntag; Otto Weich
Original assignee: Mlr Maschinen Logistik Rationalisierung Gmbh
Priority date: 1990-09-05
Filing date: 1991-09-05
Publication date: 1992-03-19

Abstract

With conventional spinning machines, the empty bobbins have to be supplied to the machine in the correct orientation so that they can be placed on the input belts automatically. With such machines, it is therefore necessary to convey the bobbins to the spinning machine in mutually parallel containers. In order to be able to convey the bobbins from the spooler to the spinning machine in any type of container, the spinning machine is fitted with a device with a feed hopper (12) in which the bobbins can be provisionally stored lying at random. Linked to the feed hopper (12) is an elevator (9) with a multiplicity of horizontal support slats (10) which take individual bobbins (30) from the random heap and feed them to the input device (3) on the spinning machine.

Description

Process for transporting cops and sleeves between spinning and winding machines

description

The invention relates to a method for transporting cops and sleeves between spinning and winding machines in a spinning mill, in which the wound cops originating from the spinning machine are moved to the dishwasher by means of mobile, essentially box-shaped bobbin wagons in which the cops are disordered transported.

In the spinning mill, a winding machine is usually arranged after several spinning machines. The wound cops produced in the spinning machines are rewound in the winding machine to larger bobbins. As a result, empty spinning tubes are produced in the winding machine, which need to be examined for any remaining threads, sorted out and returned to the spinning machines. So far, the procedure is as follows. After the spinning tubes with residual threads have been sorted out, the usable spinning tubes are placed parallel to one another in specially designed spinning tube containers. The spinning tube containers, which have a width that corresponds approximately to the length of the spinning tubes, have a bottom that can be opened on their underside. The spinning tubes deposited in the spinning tube containers are transported with the containers to the spinning machine and positioned there on the feeding device, after which the bottom of the tube container is then opened. The feed device of the spinning machine successively removes the spinning tubes, which are aligned parallel to one another, from the tube container. So that the sleeves are then automatically attached to the sleeve feed belt of the spinning machine, the sleeves are in This device is sorted so that the large opening of the conical sleeves points downwards.

Although this type of feeding the empty spinning tubes on the spinning machine has now become established and in any case also represents an improvement over the feeding of the spinning tubes by hand, the known procedure has some disadvantages. For example, separate containers are necessary in order to transport the wound cops from the spinning machine to the winding machine, while the above-mentioned spinning tube containers must be used for the return transport of the unwound spinning tubes of the dishwasher to the spinning machine. In addition to the fact that a number of spinning tube containers must always be in circulation, it is also necessary to transport them from the spinning machine to the winding machine in an empty state, so that a number of transport routes which cannot be used per se are obtained. Furthermore, the sleeve boxes, which at least have a weight of approx. 30 kg when filled, have to be lifted onto the drawing-in device of the spinning machine under heavy physical conditions, and thus at least to a height of approx.

It is therefore an object of the present invention to improve the method and the device of the type mentioned in the introduction in such a way that special spinning tube containers can be dispensed with.

This object is achieved in that the bobbin wagon is also used for the return transport of the sleeves unwound in the winding machines to the spinning machines.

This solution has the advantage that no separate container for the transport of the spinning tubes from the Winding machine for spinning machine is needed. The bobbin wagon, which is normally used to transport the cops from the spinning machine to the winding machine, is now also used to transport the empty spinning tubes from the winding machine to the spinning machine. In this way, in addition to the special spinning sleeve containers, empty runs of the bobbin wagon from the winding machine to the spinning machines are saved.

IM also larger bobbin wagons on the spinning machine, e.g. To be able to empty into a container, it is advantageous if the bobbin wagon is tipped out in a tilting device to remove the sleeves on the spinning machine.

An exemplary embodiment of the invention is explained in more detail below with reference to a drawing. Show it:

1 is a schematic side view of a device for performing the method according to the invention at the transfer point of a spinning machine,

2 shows a schematic representation of a top view of the device from FIG. 1,

3 is an enlarged view of a section along the line III-III of FIG. 2 with a view of the vertical conveyor,

Fig. 4 in an enlarged view the detail IV of Fig. 3, and

5 shows a horizontal section through the device along the line VV in FIG. 3. In Fig. 1, a conventional spinning machine 1 is schematically shown in a side view, to which a special device to be explained later is attached.

The spinning machine 1 comprises, on a front part 2, an automatic feed 3 for the correctly positioned spinning tubes and an adjoining shaft 4 with the possibility of turning the spinning tubes. Below the shaft is the sleeve feed belt 5, with which the spinning sleeves are attached to the individual, not shown here for the sake of clarity. Spinning stations are fed.

In the other direction, the sleeve infeed conveyor is followed by a further conveyor belt 6, directed obliquely upwards, with which the sleeves wound at the spinning positions, the so-called cops or bobbins, are placed in a bobbin wagon 7 which is ready. In the spinning machines 1 just described, the empty spinning tubes have so far been arranged parallel to one another in so-called tube holders and fed in the correct position.

In the subject matter of the present invention, the sleeve containers, the position of which is indicated in FIGS. 1 and 2 by dashed lines 8, are replaced by a device which is described in more detail below.

Since the spinning machine 1, as can be seen from FIG. 2, has two feeders 3 and 3 'arranged next to one another, the device 2 according to the invention also has vertical conveyors 9 and 9' arranged next to one another. The vertical conveyors essentially consist of horizontally arranged carrier bars 10 and 10 'attached to vertically rotating belts 11. Form further the vertical conveyors 9 and 9 'a vertical wall of a storage container 12 provided for receiving the sleeves. The storage container 12 extends over the entire width of the two vertical conveyors 9 and 9' arranged next to one another and has a base 13 which is inclined towards the vertical conveyors. The angle of inclination o of the floor to the horizontal is approximately 20 ° in the exemplary embodiment shown here.

Furthermore, the storage container 2 is delimited by two side walls 14 and 15, which run on the one hand from above in a funnel-like manner to the bottom 3 and on the other hand also funnel-like towards the front to the vertical conveyors 9 and 9 '. In the middle, the storage container 12 is divided by a partition 16 into two intermediate stores 17 and 18 assigned to the respective vertical conveyors 9 and 9 '. The height of the partition is only about a third of the height of the two side walls 14 and 15. At the end of the storage container 12 facing away from the conveyor belts, the two side walls 14 and 15 are at a distance from one another which is greater than the width of the bobbin wagon 7 On this side of the storage container 12 there is also a lifting and tilting device 19 with which the bobbin trolley 7 can be gripped, lifted and pivoted about a horizontal axis 20 lying at the height of the storage container 12 until the side wall 21 of the bobbin trolley 7 facing the storage container 12 lies in one plane with the bottom 13 of the storage container 12. Due to the hydraulic cylinder 23 acting on the carrying fork 22, the bobbin wagon 12 can also be stopped or continuously lowered again in any intermediate positions.

3 to 5, the vertical conveyors and their assignment to the storage container are now explained in more detail. The driver strips 10 and 10 'of the vertical conveyor are each attached to two pairs of toothed belts 11, 11', plastic blocks 24 being cast onto the toothed belts 11, 11 ', to which the driver strips 10, 10' are screwed. The toothed belts 11 and 11 'are framed laterally by sliding walls 25, 26 and 27, on which the driver strips 10, 10' slide along. If the carrier strips 10, 10 'are viewed from the storage container 12, their upper side 28 is formed obliquely, so that the contact line 29 has a spacing a lying on a carrier strip 10 at a distance a which is greater than the largest radius R of the conical spinning sleeves 30. In this way, the sleeves 30 are always held against the sliding walls 25, 26 and 27 which laterally frame the toothed belt 11.

The width B of a driver strip 10 is smaller than the largest diameter D of a sleeve 30, but larger than the largest radius R of a sleeve 30.

The distance A between the front edge 31 of the bottom 13 of the storage container 12 facing the vertical conveyor 9 and the sliding walls 25 to 27 of the vertical conveyor 9 is greater than the width B of a carrier bar 10 and smaller than the largest diameter D of a spinning sleeve 30. In any case, the distance A is smaller than the sum of the smallest diameter d of a sleeve 30 and the width B of a driver strip 10.

As can be seen particularly well from FIG. 4, in the upper region of the vertical conveyor 9, a threaded pin 32 is screwed into one of the sliding walls 25, but this screw projects slightly beyond the front of the sliding walls. So that the driver strips 10 are not hindered by the threaded pin 32, corresponding recesses are provided in the driver strips 10, which are not shown in the drawing for the sake of clarity.

An ejector 33 is arranged above the threaded pin 32 and comprises an ejector pin 35 which can be actuated and moved by means of a pneumatic short-stroke cylinder 34. The ejector 33 is, as will be explained later, connected to a counting device which comprises a light barrier 36 which is attached to the side of the vertical conveyor 9 facing away from the storage container 12 and which counts spinning sleeves conveyed by the vertical conveyor 9.

As can be seen in this connection from FIGS. 1 and 2, a slide 37, 37 'is provided for each vertical conveyor 9, 9' below the ejector 33, onto which the spinning sleeves dropped by means of the ejector 33 fall. The sleeves 30 which have fallen onto the chutes 37, 37 'slide along the chute into the intermediate storage 18 or 17 of the other vertical conveyor 9' or 9 (see FIG. 1).

On the side of the vertical conveyor 9, 9 'facing away from the storage container 12, a rear wall 38 is arranged which, together with the rear of the vertical conveyor, forms a shaft 39 in which the sleeves 30 are conveyed downwards, the sleeves then being moved upwards lie on the swept undersides 40 of the driver strips 10, 10 '. The distance between the rear wall 38 and the driver strips 10, 10 'is chosen so that the sleeves 30 cannot fall down.

At the lower deflecting end of the vertical conveyors 9, 9 ', a feed channel 41 is provided, in which the sleeves 30 are placed parallel to one another and by the feed device 3, 3', which is no longer shown because it is known. the spinning machine 1 are drawn.

The operation and functioning of the device is explained in more detail below.

On the winding machine, not shown in the drawing, the bobbin wagon 7 is filled with the empty spinning tubes that are produced there. Since the bobbin wagon is larger in all dimensions than the spinning sleeves to be transported, the spinning sleeves are disordered and mixed up in the bobbin wagon 7. The bobbin wagon filled in this way is then moved from the winding machine to the spinning machines, where it is emptied into the storage container 12 together with the lifting and tilting device 19. Since the partition 16 between the two intermediate stores 17 and 18 of the storage container is not as high as the two side walls, the number of spinning sleeves 30 is distributed relatively well between the two intermediate stores 17 and 18, since the spinning sleeves are also above the partition 16 when the storage container 12 is full lie.

When the device is put into operation, the driver strips 10, 10 ′ facing the storage container 12 move upward. The unordered pile of spinning sleeves present in the store is mixed until a sleeve parallel to the vertical conveyor is also present on the front edge 31 of the storage container bottom 13. Such a sleeve is then gripped by a driver strip 10 or 10 'and conveyed upwards. This process is repeated until the intermediate stores 17, 18 of the storage container 12 are completely emptied, the obliquely arranged bottom 13 ensuring that all spinning tubes are fed to the vertical conveyors 9 and 9 ', respectively. Now it can happen that two spinning tubes on top of each other rest on a carrier bar 10 or 10 ', but this is not desirable. Such a pair of spinning sleeves passes through the setscrew 32 in the upper region of a vertical conveyor 9 or 9 ', as a result of which the spinning sleeve lying above is pressed a small amount away from the sliding wall 36. This small amount is sufficient for the upper spinning sleeve 30 to become "overweight" and to fall down into the storage container 12 from the lower spinning sleeve. The underlying spinning sleeve is also pressed off the sliding wall by the grub screw 32, but then returns to the sliding wall 26, since the width B of the carrier strips is dimensioned such that the spinning sleeves 30 are not knocked down by the grub screw 32 from the top 28 thereof.

The spinning sleeves 30, which are conveyed upwards, fall on the side facing away from the storage container 12 into the shaft 39 formed by the vertical conveyor 9 or 9 'and the rear wall 38, being collected from the underside 40 of the leading carrier bar 10 or 10' and down are transported where the spinning sleeves pass through an inclined surface 42 and a scraper brush 43 into the feed channel 41. From there, the known pull-in device of the known spinning machines takes over the further transport of the spinning tubes to the individual spinning positions.

Guide bars 44 are provided on the rear wall 38 so that the spinning tubes are centered on the feed channel 41 during the downward transport in the shaft 39.

In order on the one hand to increase the sorting performance of the vertical conveyors 9, 9 'and on the other hand to prevent spinning sleeves from jamming, the width of the intermediate store is the distance between the partition 16 and a side wall 14 or 15 in the region of the front edge 31 of the bottom 13 selected so that it corresponds to one and a half times the length of a spinning sleeve 30. As can be seen from FIG. 5, the side walls 14 and 15 as well as the partition 16 serve to guide the driver strips 10, 10 ', which have corresponding guide shoulders 45 at their free ends.

While the spinning tubes are being sorted and fed, they are counted by means of the light barrier 36. If now e.g. If the first intermediate store is empty and is only conveyed from the other intermediate store 18, the numerical difference is compensated for as follows.

Due to the numerical difference determined by the light barriers 36 and 36 ', the ejector 33 is actuated, the ejector pin 35 throwing the spinning sleeves off the respective carrier bars 10 and 10'. These thrown-down spinning sleeves 30 pass through the chute 37 into the respective other intermediate store, that is to say into the empty intermediate store 17, which is refilled in this way, so that the other vertical conveyor feeds empty spinning sleeves to the other feed of the spinning machine. In this way, an inaccurate distribution of the spinning sleeves present in the two intermediate stores 17 and 18 in a disordered manner can be compensated for.

After all spinning positions of the spinning machine have been supplied with empty spinning sleeves, the spinning machine can work in the usual way. The wound sleeves, i.e. the cops or bobbins, are then conveyed out of the machine via the sleeve feed belt 5 and the conveyor belt 6 and get into the bobbin wagon 7 To reduce the bobbin wagon 7 cops to be put down, this is no longer necessary in the device according to the invention, since the bobbin wagon with the lifting and tilting device is slowly pivoted downwards from the position shown in dashed lines in FIG. 1 and finally set down on the floor can, without the cops having to travel larger heights.

From all this it is clear that the loading and disposal of the spinning machines with sleeves or cops with the same transport container, namely the bobbin wagon, can be carried out without any empty paths. Although not described, it is also conceivable to use the device according to the invention comprising the storage container 12 and the vertical conveyor 9 in connection with a closed composite system in which the empty sleeves are conveyed from the dishwasher via a conveyor belt into the storage container 12 and only sorted there and then Feeder 3 of the spinning machine 1 are fed in the correct position.

Instead of an ejector pin 35, a controlled blowing nozzle can advantageously also be used as an ejector.

Claims

1. A method for transporting cops and sleeves between spinning and winding machines in a spinning mill, in which the cops originating from the spinning machine are transported to the winding machine by means of mobile, essentially box-shaped bobbin wagons in which the cops are disordered, characterized in that one also uses the bobbin wagon for the return transport of the sleeves unwound in the winding machines to the spinning machines.

2. The method according to claim 1, characterized in that one tilts the bobbin wagon in a tilting device to remove the sleeves on the spinning machine.