EP0330690B1 - Process and device for steaming cross-wound bobbins - Google Patents

Abstract

Cross-wound bobbins can be moistened automatically by steaming during their transit from manufacture to packaging. After removal from the cross bobbin winder, the bobbins are fitted with steam-permeable perforated tubes (12) and stacked in bobbin columns on a pallet base (1). As each pallet is filled, the tube cavities of all bobbin columns are connected to a steam feed pipe. During steaming, all the columns grouped on the pallet base can be axially compressed.

Description

The invention relates to a method for steaming or moistening cross-wound bobbins combined in groups to form coil columns, a pallet base being filled with coil columns having vapor-permeable perforated bobbin sleeves, and each of the cross-wound bobbins after the completion of a pallet by connecting the sleeve interior of all coil columns to a pressurized steam feed line from the inside is dampened to the outside. It also relates to an apparatus for performing the method.

Cross-wound bobbins coming from a winding machine or spinning machine are often steamed before further processing. This is supposed to either be a pure moistening for the purpose of increasing the weight to a moisture level customary in trade, e.g. B. to 8.5% moisture for cotton or 16.5% moisture for wool, or damping in the narrower sense for the purpose of fixing certain physical or chemical properties. Humidification takes place in the practice of the textile industry in that the bobbins to be treated individually in a large room with high air humidity for a relatively long time, e.g. B. hung for a few days.

The effort required only for moistening is space and time consuming and requires a lot of manual work. It has therefore already been attempted to spray the packages with water in a defined manner before packaging and to pack them in an airtight manner, so that the moisture has time to distribute itself evenly throughout the package. This procedure is of course associated with considerable uncertainty factors and has repeatedly led to the customer claiming too high a moisture level and corresponding price discounts.

For damping for the purpose of fixing cross-wound bobbins, it is known from DE-OS 35 43 880 to combine several cross-wound bobbins first to form a bobbin column and then to dampen them under axial pressure in a boiler. This procedure is also time-consuming and labor-intensive because the kessen must be evacuated before steaming, because steaming takes a relatively long time, e.g. takes a few hours and because a boiler damping cannot be classified in a continue street.

For bleaching and dyeing bobbins, it is known from EP-A-0 018 047 to place the bobbins on top of one another in an autoclave, to submerge them in the bleaching or dyeing liquor, to remove the liquor from the autoclave by means of pressed-in steam or pressed-in glass and the like Driving out the inside of the coil and treating the coils with steam on the inside and outside at the same time in order to heat them up. By diving and then expelling the diving fleet, the coil structure is relaxed and therefore softer than before the treatment. A method of fixing Axially compressed yarn packages are known from EP-A-0 233 365.

The invention has for its object to provide a method for steaming or moistening cross-wound bobbins, which allows a coil-forming machine, for. B. a spinning machine or bobbin winder to treat immediately removed packages in groups in time with the bobbin-forming machine and to pack them for shipment, the yarn moisture to a commercially available value for each yarn type and quality depending on the treatment time, pressure and / or temperature should be adjustable.

The solution according to the invention is specified in the characterizing part of claim 1. The cross-wound bobbins are then combined on a pallet under axial pressure to form bobbin columns, that is to say in groups with coaxial rows of tubes on the pallet bottom, stacked one above the other, axially pressed, and then without further preparation, that is to say without further preparation, such as evacuation of the bobbin space a pressure steam line connected. By varying the treatment time, steam pressure and / or steam temperature and by checking the yarn moisture reached, the maximum permissible moisture for each type of yarn can be regulated according to the invention.

According to the invention, the coil columns as a whole are in the position on the pallet base in the direction of the coil or column axes compressed and fixed in the compressed state overall by steaming. In order to achieve this, it is advantageous if the pallet base is either itself configured as a press jaw (a vertical press) or is arranged on a corresponding press jaw and if the pallet base is assigned a counterpressure jaw for simultaneous axial compression of all the coil columns placed on the pallet base . In this case, the steam pressure line can be connected to the interior of the coil columns either via the pallet base or via the counterpressure jaw. If there is a risk of damage to the end faces of the bobbin when pressed by protruding sleeves, perforated shelves can be inserted between the individual bobbin layers.

The removal and forwarding of the cross-wound bobbins from the bobbin-forming machine to the pallet floor and the connection and switching on of the steaming unit can be carried out by an automatic machine. Furthermore, according to the invention, each coil - without prior evacuation - is subjected to the humidified steam from the inside to the outside. Since this steam is supposed to be under pressure and is accordingly pressed through the coil, the humidification process can be carried out in a tiny fraction, e.g. B. in the order of one minute of the time required for humidification in an appropriate conditioning room or in a boiler.

The pallet base preferably runs through in the case of the invention Process essentially three zones, namely a loading zone, a steaming zone and a packaging zone. The processes in each zone can be carried out automatically in a clocked manner, adapted to the production speed of the upstream coil-forming machine, because the steaming time of the coils can easily be adapted to the working speed of the other zones by selecting the steam pressure used.

In particular, if sleeves are used which cannot be plugged into one another so that a self-supporting coil column cannot be produced, it is advantageous according to yet another invention if the cross-wound bobbins are placed in coil columns on perforated rods combined with the pallet base. The steam pressure line can then preferably be connected to the rods, so that the rods serve at the same time to stabilize the coil columns and to supply the steam required for humidification. In this case too, intermediate floors are not required.

If perforated rods to be used as damping lances are provided to stabilize or to build up the coil columns, the steam can also be fed in from the aforementioned counterpressure jaw, if necessary. For handling when pulling the rods out of the finished treated group of coils, it can be preferred to pull the rods out of the coil columns together with the counter jaw when it is lifted off. This can preferably be achieved if the bars are pressed from the bottom to the bottom upper press jaw are passed or if the whole package after plugging the coils is turned upside down, so that the arrangement of one and the same press jaw first facilitates the plugging on of the coils and then the pulling out of the rods from the coil columns.

After moistening, the packages should also be packed in a single pass in a vapor-tight film to prevent them from drying out. According to the invention, this takes place in that the packages are packaged, in particular welded, in a group corresponding to the structure on the pallet base. The entire pallet can be packed without intermediate shelves, but if necessary the perforated rods are expediently pulled out of the coil columns before packing. In contrast, the pallet base and preferably also a base placed on top of the pallet and used as a lid can also be packed in order to give the packaging body sufficient stability for shipping. In the automatic run of manufacture, palletizing and damping, packaging of the individual whole bobbin columns can also be integrated according to another invention if the individual columns of cross-wound bobbins stacked one on top of the other are individually removed from the pallet base and packaged, in particular welded into a film.

Fig. 1

eine Perspektivansicht eines Palettenbodens, der gerade mit Spulensäulen bestückt ist;

Fig. 2

einen Schnitt durch eine verpackte Palette;

Fig. 3

einen Schnitt durch eine verpackte Spulensäule; und

Fig. 4

eine Preß-Dämpf-Vorrichtung im Schnitt.

Details of the invention are explained on the basis of the schematic drawing of exemplary embodiments. Show it:

Fig. 1

a perspective view of a pallet base, which is currently equipped with coil columns;

Fig. 2

a section through a packaged pallet;

Fig. 3

a section through a packed coil column; and

Fig. 4

a press-steam device on average.

The accompanying drawing shows in FIG. 1 a pallet base 1 with compressed steam feed line 2, perforated rods 3 connected to it and cross coils 4 attached to one of the rods 3. The pallet base 1 has a large number of compressed steam connections 5. These are distributed over the surface of the base 1 that from a number of cross-wound bobbins 4, there are 6 places in the densest possible arrangement but without mutual contact on the pallet bottom 1. A normal pallet base size can accommodate, for example, 3 x 4 coil columns 6 and have a size of approximately 600 x 800 mm. Depending on the purpose, e.g. for weaving, knitting or slip, the packages are produced, the mutual distances of the pressure steam connections 5 are specified.

When a pallet base 1 is fully loaded with coil columns 6 pressed in the axial direction, pressurized steam is pressed via line 2 into the inside of the coil so that the cross-wound coils 4 are damped from the inside to the outside. The pressurized steam line 2 can thereby preferably in a continue street the perforated rods 3 or simply connected to the inside of the coil column 6 so that the pallet base 1 is lowered onto valves of the pressure steam supply line 2 distributed according to its pressure steam connections 5. The valves 7 are then to be opened by the lowering.

Already during steaming, a pallet base forming a cover 8 can be placed on the upper side of the coils 6 in order to reduce as far as possible a loss of steam pressure at the upper end of the coil columns 6. This cover 8 can remain on the coil columns 6 in the next process step, namely in the packaging station, while it will generally be expedient not to pack the perforated rods as well. The rods 3 are therefore, for example by lifting the pallet base 1 together with the coil columns 6 lying thereon, pulled out of their interior of the sleeve and remain at the steaming station.

2, a film 9 can be placed around the entire body of coil columns 6, pallet base 1 and cover 8 and welded. If smaller packaging units are desired, the coil columns 6 can also be individually welded into a film 10 according to FIG. 3. Sufficient stability for shipping an individual coil column 6 can be achieved if the sleeves of the coil columns are to be inserted into one another.

Fig. 4 shows the case of a damping device for a group of coil columns 6, the total during damping between two press jaws 14 and 15 are kept pressed together in the direction of the coil or column axes 16. The pressure steam supply line 2 can be in a, for. B. the upper, press jaw 15 can be integrated. In order to rule out mutual damage or damage to the end faces 17 of the individual coils 4 caused by coil sleeves, perforated intermediate floors 18 are advantageously inserted between the individual coil layers. The holes in the intermediate floors 18 are intended to allow the steam to pass through and to accommodate the possibly protruding sleeve ends.

Reference symbol list

1 =

Pallet floor

2 =

Pressurized steam supply

3 =

perforated rod

4 =

Kitchen sink

5 =

Steam connection

6 =

Coil column

7 =

Valve

8 =

cover

9 =

foil

10 =

foil

14 =

lower press jaw

15 =

upper press jaw

16 =

Column axis

17 =

Face

18 =

Mezzanine

Claims (12)

1. A method of damping or moistening cross-wound bobbins (4) combined in groups to form columns (6) of bobbins, a pallet bottom (1) being filled with bobbin columns (6) comprising steam permeable perforated bobbin sleeves (12) and in which, whenever a pallet is completed, each of the cross-wound bobbins (4) is steamed from the inside out-wardly by connection of the sleeve interior of all the bobbin columns (6) to a pressurised steam supply line (2), characterised in that the bobbin columns (6) are altogether compressed in the direction of the bobbin or column axes while positioned on the pallet bottom (1) and are then, while in the compressed state, fixed altogether by being steamed and in that the cross-wound bobbins (4) are packed in a disposition corresponding to the arrangement in which they were situated on the pallet bottom (1).
2. A method according to claim 1, characterised in that the cross-wound bobbins (4) in bobbin columns (6) are fitted onto perforated rods (3) combined with the pallet bottom (1) and in that the steam supply line (2) is connected to the rods (3).
3. A method according to claim 1 or 2, characterised in that the cross-wound bobbins (4) are welded into foil.
4. A method according to claim 3, characterised in that the group of bobbin columns (6) formed on the pallet bottom (1) and steamed are packaged altogether, possibly after withdrawal of the perforated rods (3).
5. A method according to one of claims 1 to 4, characterised in that the group of bobbin columns (6) steamed on the pallet bottom (1) are packaged together with the bottom and with another bottom which is used as a cover (8).
6. A method according to claim 2, characterised in that the individual bobbin columns (6) are removed from the pallet bottom (1) and are packaged, being in particular welded into a foil (10).
7. A method according to one of claims 1 to 6, characterised in that the cross-wound bobbins (4) are automatically and in one process removed from the bobbin forming machine, placed on the pallet bottom (1), steamed - possibly while axial pressure is applied - and are finally packaged ready for despatch.
8. An apparatus for carrying out the method according to one of claims 1 to 7, characterised in that the pallet bottom (1) is itself constructed as a pressing plate and in that there is associated with the pallet bottom (1) a back-pressing plate for simultaneously axially compressing all the bobbin columns placed on the pallet bottom.
9. An apparatus according to claim 8, characterised in that on the surface of the pallet bottom (1), at the same distance between centres as the bobbin columns (6), there are pressurised steam connections (5) to the pressurised steam supply line (2).
10. An apparatus according to claim 9, characterised in that each of the pressurised steam connections (5) is at the same time constructed as a bobbin push-on rod (3) and as a steaming lance.
11. An apparatus according to claim 10, characterised in that the push-on rods (3) which are constructed as steaming lances are fitted through respective apertures in the pallet bottom (1) and can be separated by a simple relative movement.
12. An apparatus according to claim 10, characterised by push-on rods (3) which are individually screwed onto the pressurised steam connections (5).

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