EP0879907B1 - Texturing machine - Google Patents

Description

The inventions relate to a texturing machine according to the preamble of Claim 1.

When texturing an essentially smooth thread is supposed to be a more textile one Abandoned appearance and related properties become. The smooth yarn supplied to the texturing machine has an am Thread-adhering chemical substance, the so-called preparation, with it further processing of the plain yarn by the texturing machine is possible becomes. The preparation leads to a cohesion of the filament bundles good sliding properties and anti-static behavior of the thread. There are many such substances. It is common to all that at high thread temperatures create more or less oily vapors and that as a result of the extremely fast screw rotation of the wrong twisted Thread a fine spray can be thrown off.

A texturing machine is known from EP 0 571 975, in which the Thread is guided in a twist zone over a cooling rail attached to her Sidewalls has openings. These openings serve the centrifuged oil particles to catch and out of the area of the thread dissipate. However, this arrangement has the major disadvantage that a significant proportion of drops from the open cooling rail into the environment is thrown out. In addition, oily vapors can essentially step freely out of the open cooling rail. It is in the EP 0 571 975 proposed the openings in the groove walls with a To connect suction device, however, leads to the open arrangement of the suction openings on the problem that only a part of the vapors is detected and a significant amount of ambient air must be extracted. Excessive suction would, however, lead to an unstable thread run inside the cooling rail.

Vapor that is not extracted is found everywhere on the machine and inside Factory buildings as oily rainfall, which is not just general is undesirable but also causes cleaning costs.

Accordingly, it is the object of the inventions to use a texturing machine trained in such a way that it is in the processing of Fadens to no significant burden from oily precipitation. Furthermore, it is the aim of the inventions, one upstream High-temperature heater-coordinated cooling device with intensive cooling to create the thread.

This object is achieved by the features of claim 1 or by the features of claim 15 or by the features of Claim 28 solved.

The thread in the thread heater releases a lot of smoke and steam the cooling device is upstream and where the thread to about 190 ° C to 250 ° C is heated. The heater, which is designed as a contact or hot air heater can be, is usually along the thread path with a lid closed so that the smoke does not escape freely into the environment can. The high temperature heater is a cooling device in the thread run downstream. The heater and the cooling device are in the False twist zone, i.e. the false twist unit is in the thread run behind the Cooling device arranged and causes a built up in the thread False twist propagates all the way to the heater. Therefore occurs even when entering the problem of steam and oil mist formation in the cooling device Thread due to the heater and an extremely fast screw rotation of the thread and thus throwing off oil particles on the thread. According to According to one invention, the thread is cooled in a cooling device, which an elongated hollow body with one for thread guidance in the thread running direction extending cooling tube. The particular advantage lies in that the thrown off oil drops and the rising steam in the cooling device remain. A substantial portion of the steam strikes settles on the inner walls of the cooling tube, where it then condenses. The condensate as well as the flung droplets, which are also can collect on the inner wall of the cooling tube, at the ends of the Cooling tube can be collected and derived.

A particularly preferred development of the texturing machine according to Claim 2 has the advantage that an essentially complete The released vapors and oil mist are removed. This will only a small amount of ambient air is also extracted. However, this is also advantageous because a small amount of ambient air leads to a too rapid contamination of the suction lines is prevented.

Since a considerable one in particular on the inlet side of the cooling device Development on vapors, it is advantageous if the Suction device in the area between the longitudinal center of the cooling tube and the end of the cooling tube where the thread enters the cooling tube connected. To keep the air from entering at the ends of the cooling tube The suction device is dimensioned so that no steam escapes at the free ends preferably at a distance of one third of the length to the thread inlet to connect to the cooling tube.

The embodiment of the texturing machine according to claim 4 is characterized in that the proportion of the ambient air sucked in is minimized can be.

Another particularly preferred development of the texturing machine according to Claim 6 has the advantages that the application of the thread on simple Way becomes possible. Furthermore, cleaning the cooling tube is without greater effort feasible. To form the cooling tube, it is essential that the lid is sealingly connected to the cooling rail, so that no ambient air into the cooling tube from the long side of the cooling device can penetrate.

In this case, the cover can also partially cover the cooling rail take place, so that in particular only the inlet area immediately behind the Heater is covered.

The suction device can be advantageous with the cooling rail or Lid connected.

The cover, which covers the cooling rail in a form-fitting manner, is included connected to a locking device. It is particularly advantageous here if the closing direction can be controlled via a central control unit. In order to can occur when threading or even if the machine fails Openings and closings can be made automatically.

Another particularly preferred embodiment provides that the Suction device with the cooling device and the upstream heater connected is. The heater also has a closed one Guide channel so that the vapors generated therein are discharged can.

Another solution to the underlying problem is a texturing machine given with the features of claim 15. Here is a tubular protective body between the heater and the cooling device arranged, which surrounds the thread without contact and in the form of a jacket The inlet and outlet of the thread are open at the ends. This will achieved that the steam rising from the thread in the interior of the Protective body remains. By connecting a suction device then the vapors are essentially completely removed. So that will avoided that the steam is deposited in particular on the cooling device and there as condensate for pollution and for influencing the thread cooling leads.

A particularly preferred development of the texturing machine according to Claim 16 has the advantage that oil drops thrown off and on the condensate forming the inner walls of the heat sink is completely removed become. By suction and drainage of the condensate takes place thus pre-cooling the thread in the interior of the protective body instead of.

The configuration of the texturing machine according to claim 18 or 19 has also the advantage that the vapors are extracted from the heater. A only the suction device assigned to the heater can be omitted. The openings in the jacket of the protective body can, for example, by several Boreholes, which are arranged in a ring-shaped arrangement around the circumference, or through Slits are formed on the front of the protective body.

In order to control the intensity of the extraction of the heater, the further training is of the invention according to claim 20 advantageously applicable. Through the Adjustment of the air slot can be the proportion of ambient air sucked in can be set as required. A certain amount of ambient air is of advantage in order to quickly contaminate the suction lines to prevent. Through the air slot directly at the heater entrance a sensitive heater extraction is also possible, the low Heat loss results.

The adjustment of the louvre can be advantageous by an axial Moving the protective body in the thread running direction can be carried out.

Around the vapors emerging in the entrance area of the cooling device to catch the thread, it is advantageous if the protective body extends at least over a partial length of the cooling device. It owns the special advantage that the condensation on the inner walls of the Protective body takes place. This will make the surface area of the cooling device essentially dry. The thread can thus from entry to to be led out on a dry cooling rail. Thus increased the cooling effect in the thread.

In a particularly preferred development of the texturing machine, the Cooling device designed as a cooling tube which on the circumference of the Thread is wrapped. This cooling tube is in the protective body arranged so that no contact between the cooling tube and protective body takes place.

The vapors emitted by the thread can freely enter the interior of the Protective body kick to be vacuumed or around the inner walls to condense the protective body. It is advantageous if at the end of the protective body between the cooling tube and the jacket of the protective body a bulkhead is arranged, except for a thread outlet abuts the circumference of the cooling tube. This will release vapors prevented.

The embodiment of the invention according to claim 24 is characterized by this from that the protective body is easily accessible to insert the thread and to clean the inside of the protective body. The lower part and the upper part can be folded together using a folding mechanism be connected. However, it is also possible to use the lids as half-shells perform that can be moved concentrically into each other, so that when the protective body is rotated in the circumferential direction is opened or closed.

Another invention is by the texturing machine according to claim 28 given. Here is between the first heater and the cooling device a protective body enclosing the thread without contact arranged on its ends are open for the entry and exit of the thread. The protective body has at least one opening through which the interior of the protective body is connected to a suction device. Is inside the protective body arranged a nozzle for wetting the thread with a cooling fluid. The Nozzle is with a metering device arranged outside the protective body connected, which metered the cooling fluid in its quantity and to the nozzle encourages. This design of the texturing machine and the invention Processes have the advantage that the wetting of the thread an additional evaporation occurs, which binds the preparation vapors or leads to a certain washing of preparation residues on the thread. This ensures that the thread is behind in the thread running direction the cooling device arranged cooling rail by sticking the Preparation residues become dirty and the cooling rail is absolutely dry can be kept, which is particularly in the case of contact cooling leads to improved cooling effect.

In addition, the wetting of the thread has the advantage that already the thread is cooled immediately after leaving the heater. Herewith can in particular at high yarn speeds of> 1,000 m / min a short cooling section can be realized within the texturing machine. Another advantage of this invention is the possibility of dosing Cooling fluid. This allows a defined cooling effect to be achieved. moreover it is avoided that residues of the cooling fluid on the cooling surface of the Cooling device arrive.

By a particularly advantageous embodiment of the texturing machine according to Claim 29 is a high uniform wetting of the thread within of the protective body reached.

To avoid that the thread can carry adhering cooling fluid and that the downstream cooling device is contaminated is the amount of Cooling fluids dimensioned by the metering device such that the emerging The amount of cooling fluid is less than the amount of vaporized from the thread Cooling fluid. The metering device can, for example, by a metering valve or a dosing pump. With a dosing pump this is Pump preferably self-priming, so that when the Nozzle channel is caused by pressure build-up a self-cleaning of the nozzle.

Further advantageous developments of the inventions are in the subclaims Are defined.

The following drawings are some embodiments of the inventions shown.

Fig. 1

eine schematische Ansicht einer erfindungsgemäßen Texturiermaschine;

Fig. 2

ein weiteres Ausführungsbeispiel einer Kühleinrichtung;

Fig. 3

einen Querschnitt der Kühleinrichtung aus Fig. 3;

Fig. 4

ein weiteres Ausführungsbeispiel einer Kühleinrichtung;

Fig. 5

einen Querschnitt der Kühleinrichtung aus Fig. 4;

Fig. 6 bis 8

weitere Ausführungsbeispiele einer Kühleinrichtung mit Schließeinrichtung für den Deckel;

Fig. 9

eine schematische Ansicht einer erfindungsgemäßen Texturiermaschine mit einem Schutzkörper;

Fig. 10 und 11

weitere Ausführungsbeispiele eines zwischen dem Heizer und der Kühleinrichtung angeordneten Schutzkörpers;

Fig. 12.1 und 12.2

einen Querschnitt durch ein weiteres Ausführungsbeispiel eines Kühlkörpers;

Fig. 1

ein Ausführungsbeispiel eines Schutzkörpers mit Düseneinrichtung.

They represent:

Fig. 1

a schematic view of a texturing machine according to the invention;

Fig. 2

another embodiment of a cooling device;

Fig. 3

a cross section of the cooling device of Fig. 3;

Fig. 4

another embodiment of a cooling device;

Fig. 5

a cross section of the cooling device of Fig. 4;

6 to 8

further embodiments of a cooling device with a closing device for the lid;

Fig. 9

a schematic view of a texturing machine according to the invention with a protective body;

10 and 11

further embodiments of a protective body arranged between the heater and the cooling device;

Fig. 12.1 and 12.2

a cross section through a further embodiment of a heat sink;

Fig. 1

an embodiment of a protective body with nozzle device.

1 is a schematic view of a texturing machine according to the invention shown. The texturing machine consists of a frame 2, a process frame 3 and a winding frame 1. Between the process frame 3 and the winding frame 1, an operating aisle 5 is formed. On the for Operating aisle 5 opposite side of the winding frame 1 is the gate frame 2 arranged at a distance from the winding frame 1. Between the winding frame 1 and the gate frame 2 a doffgang 6 is thus formed.

The texturing machine points in the longitudinal direction - in FIG. 1 is the plane of the drawing equal to the transverse plane - a variety of processing points for one thread per processing point. The rewinder occupy a width of three processing points. Therefore, there are three each Winding devices 9 - this will be discussed later - in a column arranged one above the other in the winding frame 1. Each processing point points a supply spool 7 on which a thermoplastic thread 4 is wound is. The thread 4 is a head thread guide 12 and a guide roller 11 withdrawn under a certain tension by the first delivery mechanism 13. In the embodiment of FIG. 1, the thread between the Gate frame 2 and the feeder 13 without pipe routing. It however, pipe guides can also be used in this case.

In the thread running direction behind the first delivery mechanism 13 there is a first, elongated heater 18 through which the thread 4 runs, whereby the thread is heated to a certain temperature. The heater is as High temperature heater, where the heating surface temperature is above 300 ° C. Such a heater is, for example, from EP 0 412 429 (Bag. 1720) known. To this extent, reference is made to this publication.

There is a cooling device 19 behind the heater 18 the heater 18 and the cooling device 19 in a plane one behind the other arranged in such a way that an essentially straight thread run occurs.

The cooling device 19 has a cooling tube in which the thread 4 is guided becomes. This cooling tube, the description of which will be discussed later, is connected to a suction device 14 via a suction line 15. At the The lowest point in the machine has a cooling device Condensate collection device 117, whose function will be discussed later becomes.

Behind the cooling device 19 is a schematically shown False twister 20. This false twister 20 can be used, for example, as a friction unit with rotating friction disks arranged on three shafts be trained. Here, the thread is through the through the friction discs formed gusset and twisted.

Following the false twister 20, a second, further delivery unit is used 21, the thread 4 both via the heater 18 and via the cooling device 19 pull. In the direction of the thread behind the second feed unit 21, a second heater 22 (set heater) could be arranged. This Set heater can be designed as a curved heating tube, which of is surrounded by a heating jacket, the heating tube being steamed from the outside is heated to a certain temperature. The set heater 22 could be like the first heater can also be designed as a high-temperature heater.

A compensating tube is connected to the second heater 22 in the thread running direction 29 seamlessly, as is known from EP 0 595 086 (Bag. 2045). It is thereby achieved that the thread 4 in the atmosphere of the heater 22 in the compensating tube 29 transported. In the kink between the heater 22 and the compensating tube 29 there is a thread guide 28.

Another third is located at the outlet end of the compensating tube 29 Delivery plant 23. In front of or behind there is a preparation facility (not shown here) that thread 4 before entering a winder 9 prepared. In the winding device 9, the thread is on a winding spool 25, which is driven by a friction roller 24 on the circumference, wound. A traversing device is located in front of the friction roller 24 26, by means of which the thread 4 is guided back and forth on the take-up spool 25 and is wound on this as a cross winding.

In the texturing machines according to the invention you can below second heater instead of the compensating tube 29 first in place of the thread guide 28 arrange the third delivery mechanism 23 and then a Tangel nozzle and then provide for another delivery plant. This will make it possible treating thread with adjustable thread tension in the tang nozzle Inflate air to swirl and mix the filaments together.

There is a platform 27 above the compensating tube 29, which serves as an operating aisle 5 serves. The operating aisle 5 is between the process frame 3 and the winding frame 1 is formed. The cooling device is located above the control aisle 5 19 arranged, which are essentially on the process frame 3 supports. In the process frame are the according to the thread course False twister 20, the second delivery mechanism 21 and the second heater 22 arranged.

On the winding frame 1 is in the upper area on the operating aisle facing away from the first delivery plant 13 immediately before the entrance of the arranged first heater 18. The heater 18 in turn is based on the Take-up frame from. According to the thread course is at the lower end of the Wrapping frame attached to the third delivery mechanism 23 in the winding frame 1. in the the rest of the winding devices 9 are arranged in the winding frame 3.

The winding device 9 has a coil store 8, which for The full bobbin is used if there is one on the winding device full take-up reel 25 has been generated. To remove the full spool 25, the spindle carrier is pivoted and the full bobbin on a unwind track stored. The unwind path is part of the coil store 8. On the The full spool 25 waits for the unwind path until it is removed. That's why it is Unwind path of the coil store 8 arranged on the side of the winding frame 1, which are adjacent to the Doffgang 6 and from the operating aisle 5 turned away. Furthermore, each winding device 9 is a tube feed device 10 assigned, which is no longer described in detail.

The thread 4 is here by means of the first delivery mechanism 13 Supply spool 7 is withdrawn and guided into a false twist zone. The false twist zone consists here of the heater 18 of the cooling device 19 and the false twist unit. A stretching takes place within the false sound zone and fixation of the thread 4. The thread 4 is through the second Subtracted 21 from the false twist zone and then with the help a third delivery unit 23 under shrinking conditions by a second Heater 22 promoted. After the third delivery mechanism 23, the thread 4 becomes the winding device 9 and wound into a coil 25. at this process is particularly during the thread 4 in the heater 8th the preparation adhering to the thread 4 is heated by evaporation released. Furthermore, due to the returning twist in the thread the thread perform a quick screw movement, which is an additional one The preparation is thrown off. About the released vapors and Collecting oil mist is, according to the invention, the cooling device 19 with a Cooling tube executed. The cooling tube is connected to a suction device. The cooling device 19 and the suction device 14 are over a line 15 connected to each other.

In Fig. 1, another embodiment of a suction device is dashed shown, both with the cooling device 19 and with the Heater 18 is connected. This arrangement enables the Vapors that are generated to a considerable extent in the heating device the heating device and the vapors of the cooling device are sucked off simultaneously can be.

2 and 3 is another embodiment of an inventive Cooling device shown. Here, the hollow body 56 of the cooling device formed by a cooling rail 16 and a cover 17. The Cooling rail 16 has a V-shaped profile cross section and is in Thread running direction curved. This will cause one through the cooling rail 16 guided thread 4 on the groove base 51 of the cooling rail 16 invest. The thread 4 enters the cooling device at an inlet 36 and leaves this at the outlet 37. The cooling tube 30 is now thereby formed that the lid 17, the open V-shaped cooling rail profile Cooling rail 16 closes in the longitudinal direction. The lid 17 is as a tube formed on the face facing the inlet and on the end facing the outlet is closed. The pipe can be curved, the shape of the shape substantially corresponds to the cooling rail. However, it is also possible to straight the pipe out a flexible, flexible material, for example a plastic, to produce the load specified by the cooling rail Takes shape. Here the outer diameter of the tubular Lid 17 depending on the respective radius of curvature inner profile walls of the cooling rail 16 in a form-fitting manner. The cover extends over the entire length of the cooling rail 16. The formed Cooling tube 30 is open at inlet 36 and outlet 37, respectively. The Cover 17 has at least one on the side facing the cooling rail 16 or several bores 32 distributed over the length of the cooling section. There is a connection between the cooling tube 30 via the bores 32 and the lid chamber 53 formed in the lid. The lid 17 has an opening 52 at any point outside the cooling tube 30, to which a suction line 15 is connected. The suction line 15 connects the lid 17 with a suction device (not shown here).

The cooling rail 16 has in the area of the inlet 36 or in the area of the Outlet 37 an outlet opening 34. The arrangement of the outlet opening 34 depends on the position of the hollow body 56 within the machine. In As a rule, the drain opening 34 is introduced at the lowest point. The drain openings 34 are connected via a line 54 to a Collecting container for condensate connected. The condensate collection device described here is suitable for the occurring within the hollow body Collect and drain condensate. However, in normal environments also condensate on the outside of the walls of the hollow body 56. This Condensate can also be collected through a collection device, usually designed as a container be dissipated. The container could, for example, on a Suction device must be connected so that the condensate within the Texturing machine brought together from every processing point and centrally can be dissipated.

The cooling rail 16 is inside the cooling device in a carrier 31 arranged with a U-shaped profile. Here, the cooling rail 16 and the Carrier 31 connected to each other at the ends of their legs, so that forms a chamber 33 closed at the ends. Chamber 33 is filled with a cooling medium. The cooling medium can also be in a cooling circuit may be included so that the medium within the Chamber 33 is changed regularly. The cooling medium in the chamber 33 keeps the cooling rail 16 at a level necessary for thread cooling Temperature.

With this arrangement of the cooling device, those emerging from the thread Vapors and oil mist are trapped in the cooling tube 30 and become then through the bores 32 of the lid chamber 53 and the opening 52 aspirated. This can only through the openings at the inlet 36 and Outlet 37 ambient air penetrate into the cooling tube 30. Thus relatively little ambient air sucked in. With this version the suction line 15 preferably in the central area to the elongated Cooling tube 30 arranged. That in the groove bottom 51 of the cooling rail 16 Collecting condensate can in this cooling device through the Openings 34.1 and 34.2 and the lines 54.1 and 54.2 removed become.

4 and 5 is another embodiment of a cooling device shown how they can be used, for example, in the texturing machine according to FIG. 1 would. Here, the hollow body 56 by a cooling rail 16 and a lid 55 is formed. The cooling rail 16 is and the cooling rail 16 receiving carrier 31 are as in the design of the cooling device 3 and 4 executed. In this respect, reference is made to the Description of Figures 2 and 3. Compared to Fig. 2 is this version the cooling device, however, arranged such that the V-shaped profile the cooling rail 16 with its elongated opening to the bottom of the Machine points. This version has the advantage that the thread can be easily inserted into the cooling device from below can. In this embodiment of the cooling device, the cooling tube 30 through the V-shaped cooling rail 16 and one on the free ends of the Leg-shaped sheet-shaped cover 55 is formed. The cover 55 is thereby frictionally applied to the cooling rail 16. The cooling rail 16 and the cover 55 have a curvature which is rectified in the course of the thread so that the cooling rail is covered over the entire cooling section becomes. The cover 55 has an opening 35 at which the suction line 15 connected. Via the opening 35 is the cooling tube 30 with the suction line 15 and a suction device connected to it. The cooling tube 30 is on the inlet side 36 through an end panel 38.1 and on the outlet side 37 essentially closed with an end panel 38.2. The face plates 38.1 and 38.2 have only one for the thread run required opening. As a result, the suction effect of the suction device intensified to the extent that in the borderline case even a slight negative pressure can be generated in the channel.

However, it is also possible to only attach the front cover to make one end of the cooling tube 30. At the open end, depending according to the intensity of the suction, additional ambient air is sucked in. The convenient place for the - one-sided - front panel and the confluence of the Suction depends on the spatial location of the cooling device and on the Thread running direction, since on the one hand the thread entrains the steam on the other hand, the hot steam wants to rise through the chimney effect.

In the previously described designs of the cooling devices, the Suction device via a suction line on the cover 17 or 55 of the Cooling device coupled. However, it is also possible to connect between the cooling tube 30 and the suction through an opening in the Form cooling rail 16. When connecting to the cover 17 or 55 the suction line 15 is preferably flexible, e.g. as a hose. This allows a movement required for threading to open and closing the cooling tube 30 by the suction line. The The cooling tube 30 is opened and closed by a Closing device which is connected to the cover of the cooling device. The locking device could, for example, be a sliding guide, which essentially moves the cover across the thread and thus the opening of the cooling tube 30 causes to be carried out. Other embodiments a locking device are shown in Figures 6 to 8.

In Fig. 6, the cooling tube 30 by the cooling rail 16 and one sheet-shaped cover 55 formed. The sheet-shaped cover 55 is here shaped such that a certain positive engagement between the lid and the Profile of the cooling rail 16 is possible. The cover 55 is on one side the cooling rail 16 extended and at a substantially parallel to Cooling rail 16 trained pivot axis 39 mounted. On the free one End of the cover 55 on the side opposite the pivot axis 39 for the cooling rail 16, a closing device 40 engages the cover 55. The locking device 40 here consists of a force transmitter 41, which at Actuation against a spring 42, the cover 55 about the pivot axis 39 pivoted such that the cooling tube 30 is opened. The control the locking device 40 takes place here via a central control unit (not shown here). This is used to put on the thread or when it is at a standstill the machine, the cover 55 is opened by means of the closing device 40 or locked. The lid 55 is closed by means of the spring 42 automatically as soon as the force transmitter 41 is relieved.

In Fig. 7, the cooling tube 30 is through the cooling rail 16 and a tubular one Cover 17 formed. The tubular cover 17 is on a carrier 43 attached. The carrier 43 is connected to a locking device 40. Here, the carrier 43 on a guide 44 of the locking device in vertical direction or about a pivot axis 45 of the locking device be pivoted transversely to the cooling device. The vertical movement of the Carrier 43 and thus the cover 17 can, for example, by a piston-cylinder unit respectively. The pivotal movement can, for example by a separate force transmitter or by a combination between the the vertical movement performing piston-cylinder unit and one Carry out a guided tour. The latter version has the advantage that both the vertical movement and the pivoting movement only through a single force transmitter is controlled. Here too the locking device controlled via a central control device. In the case of Fig. 7 arrangement could be the carrier 43 by a gripper be replaced, which would be controlled by the locking device.

8 is another embodiment of a locking device shown. Here, the cooling tube 30 through the bleached lid 55 and the cooling rail 16 is formed. On the plate-shaped cover 55 is over the fastener 49 fastens a pin 47. The pin 47 is in one Holder 46 movably mounted. The holder 46 is fixed like the cooling device arranged in the machine. Between the cover 55 and the holder 46 a spring 48 enclosing the pin is arranged. The spring 48 is biased against the holder 46 so that the cover 55 on the cooling rail 16 is held non-positively. The pin 47 points to its free End a handle 50 on. By manually operating the pin 47 in vertical direction against the spring 48, the cover 55 can thus lift the cooling rail 16. So that the cooling tube 30 is opened so that the thread 4 can be inserted into the cooling rail 16.

The cooling device according to the invention can also be made in one piece Form the hollow body. In this case the thread goes into the cooling tube threaded. Opening and closing the cooling tube in the longitudinal direction can not.

9 shows an embodiment of a texturing machine with a Protective body shown in the false twist zone. Since the one shown in Fig. 9 Texturing machine has essentially the same structure as that 1 becomes the description at this point Fig. 1 referred. The components with the same function have here received identical reference numerals.

There is a protective body between the heater 18 and the cooling device 19 116 arranged. The protective body 116 has a thread 4 without Contact surrounding jacket 132. At the ends is the protective body 116 open, so that the thread 4 without contact through the protective body 116 runs. The protective body 116 extends from the heater outlet to of the cooling device 19, wherein a first section of the cooling device is also enclosed by the jacket 132 of the protective body 116.

The protective body 116 is connected to an opening in the jacket 132 Suction line 115 connected at its other end to a suction device 14 is coupled.

In the area of the lower end of the protective body in the machine 116 - in this case the end facing the cooling device 19 - is in the jacket 132 introduced a condensate outlet, which the interior of the Protective body 116 connects to a condensate collection device 117.

9, the thread 4 is by means of the first The delivery mechanism 13 is withdrawn from the supply spool 7 and into a false twist zone guided. In the false twist zone is the heater 18, the protective body 116, the cooling device 19 and the false twist unit arranged so that a stretching and fixing of the thread within the false twist zone 4 is done.

The thread 4 is from the false twist zone by the second delivery mechanism 21 deducted and then with the help of a third supplier 23 under Shrinkage condition promoted by a second heater 22. This could another between the heater input 22 and the second delivery unit 21 Supplying plant switched. Thanks to the additional delivery facility regardless of the stretching in the false twist zone, the thread tensions for shrinking treatment between the third supply plant and the additional one Set the delivery plant separately. After the third supplier 23 the thread 4 is guided to the winding device 9 and to a bobbin 25 wound.

In this process, especially during the thread 4 in the heater 8 is heated, the preparation adhering to the thread 4 by evaporation released. Furthermore, due to the returning swirl in Thread the thread make a quick screw movement that additionally the preparation is thrown off. The vapors released and collecting oil mist is, according to the invention, at the outlet of the heater 18 the protective body 116 is arranged. The interior of the protective body 116 is connected to a suction device 14. Thus, the thread 4 escaping vapors removed before entering the cooling device 19. In addition, the protective body 116, which is advantageous, for example, by a Pipe can be connected to a condensate collector. This is done by the on the inner walls of the protective body escaping condensate discharged collectively.

By arranging the protective body directly in front of the heater outlet there is also the possibility of using the suction device 14 To suck vapors from the heating duct of the heater 18. This is the end of the protective body is arranged directly at the outlet of the heater 18.

The cooling device 19 is designed as a cooling rail, in the groove bottom the thread 4 is guided along with contact. Here occur when Entry of the thread into the cooling device vapors from the thread. Around to remove these vapors, the protective body extends over at least a portion of the cooling rail. This could be the protective body be extended so that the entire cooling device itself is located within the protective body 116. In the event that a cooling device used with a cooling tube 30 penetrated by the thread is, the protective body 116 is only until just before the entry of the Cooling device 19 arranged.

By removing the steam of the condensate before the thread enters In the cooling device, the thread is cooled more intensively receives in the cooling device 19. A formation of condensate within the cooling device 19 is avoided. This considerably reduces the contamination of the cooling device. Furthermore, the thread is in a substantially dry thread running track performed within the cooling device 19.

In order to increase the formation of condensate within the protective body 116, the jacket of the protective body 116 could be cooled, for example through a flow of cold air.

In Fig. 10 is another embodiment of a protective body, as he 9 could be used on a texturing machine.

In this embodiment, the cooling device is through a cooling pipe 137 formed. For cooling, the thread is helically shaped on the outside Surface of the cooling tube 137 out. Inside is the cooling pipe cooled, for example, by a flowing cooling medium.

The protective body 116 in turn consists of a jacket 132, the one interior 131 penetrated by the thread 4.

The ends of the protective body 116 are open. The jacket 132 has one Opening 133. Concentric to the opening 133 is the suction line 115 on the Coat 132 attached. The suction line 115 leads to a suction device (not shown here), so that the interior 131 via the opening 133 and the suction line 115 is connected to the suction device.

A cooling tube 137 projects into the open end facing the cooling device the interior 131 of the protective body 116. The cooling pipe 137 is looped around the circumference. Between the cooling pipe and the Sheath 132 has an opening 130 formed for draining the condensate serves. For this purpose, below the protective body 116 at the end of the jacket 132 a drain plate 138 is arranged. The drain plate 138 leads to one Container 139. The container 139 serves to receive the dripping Condensate. The protective body 116 is attached to a holder 135. The Holder 135 is with an adjustment device arranged in the machine frame 136 coupled. The adjusting device 136 enables movement of the Holder 135 in the axial direction of the protective body 116. By the adjusting device 136 can be between the heater output 144 and the open end of the protective body 116 formed slot 134 in size change. By adjusting the slot 134, the in the interior 131 incoming ambient air can be set. In addition, to control the suction of the heater 118. If the slot 134 closed by adjusting the protective body 116, i.e. the open end of the protective body 116 abuts the face of the heater, one occurs intensive suction of the heating device 118. With increasing slot size the suction of the heating device decreases.

11 shows a further exemplary embodiment of a protective body kinked thread path between the heating device and cooling device shown. The thread 4 is between the heater 18 and the cooling device 19th guided over a thread guide 146. Between the heater 18 and the Cooling device 19 is a protective body consisting of two sections arranged. The first section 116.1 of the protective body encloses the Thread 4 in the section between the heater 18 and the thread guide 146. The second section 116.2 of the protective body encloses the thread 4 in the area between thread guide 46 and the cooling device 19. Im The area of the interface of the two sections 116.1 and 116.2 is one Suction line 115 connected to the partial ridges, so that the interior of the Protective body in connection with a suction device.

To put on the thread or to clean the protective body it is from Advantage if the protective body consists of a lower part and an upper part exists that are mutually movable. Such an arrangement is shown in FIG shown. Here, the inner contour 142 of the lower part 140 is congruent the outer contour 143 of the upper part 141 is shaped. The upper part 141 is in Circumferentially rotatably coupled to the base 140.

12.1, the protective body 116 thus formed is in the open state shown. Here, the upper part 141 is in the inner region of the lower part 140 pivoted. Now a thread 4 can be inserted into the open groove formed become. Then the upper part 141 is used to close the protective body twisted out of the inner region of the lower part 140. In Fig. 12.2 the Protective body shown in the closed state. Here the upper part forms 141 and the lower part 140 a closed interior 131. In the Interior 131 runs the thread 4.

However, it is also possible that the protective body 116 in one piece with a Longitudinal slot formed in the thread running direction for thread application is.

13 shows an embodiment of a protective body with a nozzle device shown. Such an arrangement could, for example, in a texturing machine according to FIG. 1 or according to FIG. 9 are used. With a texturing machine designed in this way, the thread becomes immediate wetted with a cooling fluid after the heat treatment. The result additional evaporation of the cooling fluid on the thread leads on the one hand for volatilizing the preparation components in the thread as well as for cooling of thread.

In the following description of FIG. 13, the components are included same function with the same reference numerals. In Fig. 13 points the protective body has a tubular interior 131, which by a Sheath 132 formed The sheath 132 lies directly with one end face at the heater output 144 of the heater 18. This allows the Thread 4 directly into the interior 131 and on the opposite one Run up side on a cooling tube 137 for cooling. The coat 132 has an opening 133 in the central region. Concentric to Opening 133, suction line 115 is attached to jacket 132. The Suction line 115 leads to a suction device such as that shown in, for example Fig. 1 is shown so that the interior 131 through the opening 133 and Suction line 115 is connected to the suction device 14.

A protrudes into the open end of the protective body facing the cooling device Cooling tube 137 into the interior 131. The cooling tube 137 is on Circumference wrapped in thread. Between the cooling pipe and the jacket 132 a bulkhead 147 is arranged. The bulkhead encloses the cooling pipe 137. The interior 131 thus becomes through the bulkhead sealed from the environment. In the bulkhead 147 is on one Place a thread opening 148 on the circumference of the cooling tube so that the thread can emerge freely from the interior 131. The thread opening 148 is here essentially on the opposite side a condensate outlet opening 130 arranged in the jacket. The Condensate outlet opening 130 connects the interior 131 to a manifold 157. The manifold 157 is with a not shown here Collecting container for condensate connected. The condensate outlet is hereby arranged in the area of the jacket 132, which is inside the machine is the deepest.

At the opposite end of the protective body, the jacket 132 lies in the essentially sealing at the heater outlet 144. In the area of the heater outlet 144 there are several openings 156 in the jacket 132 opening 156 allows ambient air to enter interior space 131.

In the front area of the protective body (seen in the thread running direction) on the jacket 132 two nozzles 149 are spaced apart. The Nozzles protrude into the interior 131 such that the thread 4 over a tread 151 formed on the nozzle is guided. In the tread 151 opens a nozzle channel 152 in a funnel shape. The nozzle channel 152 is arranged via a line with a outside of the protective body Dosing device, which is designed as a metering pump 150, connected. The Metering pump 150 draws cooling fluid from a container 155. The cooling fluid, water, for example, is supplied by the metering pump 150 via the nozzle 149 promoted on the thread or in the interior 131. The metering pump 150 can be controlled via a pump control 153. The pump controller 153 is connected to a control unit 154.

In the arrangement shown in Fig. 13, the amount of the cooling fluid can be individually specified by the respective pump control. Through the central Control unit 154 can process dependent dosages of the Cooling fluids are made. Essential when dosing the cooling fluid is that the in the collecting space or on the thread 4th applied amount is completely evaporated. This prevents an excess of cooling fluid forms in the interior 131. The steam will completely discharged via the suction line 115. With this arrangement ensures that the surfaces contacted by the thread of the downstream Cooling device remain dry and thus an improved cooling effect lead by the thread. The application of the cooling fluid can - as shown in Fig. 13 - done by several or even by just one nozzle. The nozzles can also advantageously be designed as atomizer nozzles. The has the advantage that there is no direct thread contact between the nozzle and the thread is required. The atomized cooling fluid is distributed fog-like in the interior 131.

To put on the thread, e.g. by covering the protective body, The supply of the cooling fluid is interrupted by the control device 154. The control device 154 can advantageously be used for actuation of the folding mechanism of the protective body. additionally the nozzles could move out of the thread path when the thread is being applied become.

If several nozzles are used, the nozzles can be arranged in this way be that the thread is S-shaped or in serpentine lines and the For example, nozzles can be moved sideways and against stops deliberately plunge again.

In the texturing machine according to the invention it is thus ensured that the steam occurring within the cooling section is almost completely extracted or is discharged as condensate. However, this becomes a minor one Proportion of ambient air also extracted, so that small pipe cross-sections and a low energy consumption of the suction device and low The air conditioning system is exposed to suction. So it occurs no significant problems with escaping oil vapors, so that a environmentally friendly thread processing with the texturing machine according to the invention is possible.

LIST OF REFERENCE NUMBERS

1

winding frame

2

creel frame

3

process frame

4

thread

5

service aisle

6

Doffergang

7

supply bobbin

8th

coil storage

9

takeup

10

Sleeve feeder

11

idler pulley

12

Yarn guide

13

first delivery plant

14

suction

15

suction

16

cooling rail

17

cover

18

first heater

19

cooling device

20

False twist unit

21

second delivery plant

22

second heater, set heater

23

third delivery plant

24

friction roller

25

up reel

26

Traversing device

27

platform

28

thread guides

29

balance pipe

30

cooling tube

31

carrier

32

drilling

33

chamber

34

drain opening

35

opening

36

Inlet

37

outlet

38

fascia board

39

swivel axis

40

closing device

41

force transmitter

42

feather

43

Carrier, gripper

44

guide

45

swivel axis

46

holder

47

pen

48

feather

49

fastener

50

Handle

51

groove base

52

opening

53

cover chamber

54

management

55

cover

56

hollow body

116

protective body

117

Condensate collector

130

condensate discharge

131

inner space

132

coat

133

opening

134

slot

135

holder

136

adjustment

137

cooling pipe

138

flow sheet

139

container

140

lower part

141

top

142

inner contour

143

outer contour

144

heater output

146

thread pipe

147

bulkhead

148

thread hole

149

jet

150

Dosing pump, dosing device

151

tread

152

nozzle channel

153

pump control

154

control unit

155

container

156

opening

157

manifold

Claims (33)

1. Texturing machine for texturing a plurality of thermoplastic yarns (4) in a respective processing station comprising a supply bobbin (7), a first feed unit (13), an elongate first heater (18), a cooling device (19), a false twist unit (20), a second feed unit (21) and a take up device (9), characterised in that the cooling device (19) has an elongate hollow body (56) with a cooling tube (30) which extends in the direction of travel of the yarn to the yarn guide and has an inner wall for contact cooling of the yarn (4).
2. Texturing machine according to claim 1, characterised in that the cooling tube (30) of the hollow body (56) is connected to an extraction device (14).
3. Texturing machine according to claim 2, characterised in that the extraction device (14) is attached in the region between the longitudinal centre of the cooling tube (30) and the end of the cooling tube (30) at which the yarn (4) enters (inlet 36).
4. Texturing machine according to claim 3, characterised in that the cooling tube (30) is closed at the end where the yarn (4) enters (inlet 36) and/or at the end where the yam (4) exits (outlet 37) by an end plate (38) and in that the end plate (38) has an aperture for the yarn (4).
5. Texturing machine according to any of the preceding claims, characterised in that the cooling tube (30) has a curved configuration in the direction of travel of the yarn and preferably has a V-shaped cross-section.
6. Texturing machine according to any of the preceding claims, characterised in that the hollow body (56) consists of a groove-shaped cooling rail (16) and a cover (17; 55) covering the cooling rail (16) so the cooling tube (30) is formed between the cooling rail (16) and the cover (17; 55).
7. Texturing machine according to claim 6, characterised in that the cover (17; 55) covers the cooling rail (16) starting from the inlet (36) at least over a partial length along the direction of travel of the yarn.
8. Texturing machine according to any of claims 6 or 7, characterised in that there is an interlocking connection between the cover (17; 55) and the cooling rail (16), a holding force providing the seal between the cover (17, 55) and the cooling rail (16).
9. Texturing machine according to claim (8) characterised in that the cover (55) is a shaped sheet-metal strip which rests on the cooling rail (16) in a sealing manner.
10. Texturing machine according to claim (8), characterised in that the cover (17) is a flexible tube which rests on the groove walls of the cooling rail (16) in a sealing manner under the influence of the holding force.
11. Texturing machine according to any of claims 6 to 10, characterised in that the extraction device (14) is attached to the cooling rail (16) or the cover (17; 55) by a flexible suction line.
12. Texturing machine according to any of claims 6 to 11, characterised in that the cover (17; 55) is connected to a closure device (40) which brings about opening or closure of the cooling tube (30) along the cooling section and can be controlled by a control device.
13. Texturing machine according to any of the preceding claims, characterised in that a condensate collecting device (117) is arranged on the lower end of the hollow body (56) within the machine for collecting the liquid forming on the walls of the hollow body (56) due to condensation.
14. Texturing machine according to any of the preceding claims, characterised in that the extraction device (14) is connected to the heater (18) preceding the cooling device (19) in the direction of travel of the yarn.
15. Texturing machine according to claim 1 or according to the preamble of claim 1, characterised in that a tubular protective body (116) which surrounds the yarn (4) without contact and is open at its ends for the entry and exit of the yarn is arranged between the first heater (18) and the cooling device (19) and in that the protective body (116) has at least one aperture (133) which is introduced into its casing (132) and by means of which the inner chamber (131) of the protective body (116) is connected to an extraction device (14).
16. Texturing machine according to claim 15, characterised in that a condensate outlet (130) is introduced in the casing (132) in the region of the lower end of the protective body (116) in the machine and in that the inner chamber (131) is connected to a condensate collecting device (117) by the condensate outlet (130).
17. Texturing machine according to claim 16, characterised in that the condensate outlet (130) is formed by the lower open end of the protective body (116).
18. Texturing machine according to any of claims 15 to 17, characterised in that the protective body (116) rests with one end on the heater outlet (144) of the heater (18) and in that the protective body (116) has a plurality of apertures (118) in the casing at the end facing the heater (18) to allow the aspiration of extraneous air (external air) to the inner chamber of the protective body (116).
19. Texturing machine according to any of claims 15 to 18, characterised in that the protective body (116) is arranged with one end in front of the heater outlet (144) of the heater (18), in such a way that an air slot (134) is formed between the heater (18) and the protective body (116), which air slot (134) allows the aspiration of extraneous air (external air) to the inner chamber of the protective body (116).
20. Texturing machine according to claim 19, characterised in that the air slot is adjustable and in that the protective body (116) is axially displaceable in and counter to the direction of travel of the yarn for adjusting the air slot (134).
21. Texturing machine according to any of claims 15 to 20, characterised in that the casing (132) of the protective body (116) extends at least over a portion of the cooling device (19), the portion of the cooling device (19) being arranged within the inner chamber (131) of the protective body (116).
22. Texturing machine according to claim 21, characterised in that the cooling device is a cooling tube (137) which is peripherally looped by the yarn and penetrates with one of its ends into the inner chamber (131) of the protective body (116) without contact.
23. Texturing machine according to claim 22, characterised in that the protective body (116) has a bulkhead wall (147) mounted on the casing (132) at the end and in that the bulkhead wall (147) rests in a sealing manner on the periphery of the cooling tube (137), the bulkhead wall (147) having a yarn aperture (148) at one point on the periphery of the cooling tube (137).
24. Texturing machine according to any of claims 15 to 23, characterised in that the protective body (116) consists of a lower part (140) and an upper part (141) which are superimposed to form the inner chamber (131) and are constructed so as to be movable relative to one another so as to allow opening of the inner chamber (131) in the longitudinal direction for insertion of the yarn (4).
25. Texturing machine according to claim 24, characterised in that a slot extending in the longitudinal direction is formed between the lower part (140) and the upper part (141) in the closed state.
26. Texturing machine according to any of claims 15 to 25, characterised in that the protective body consists of two portions (116.1, 116.2) which are arranged in succession in the direction of travel of the yarn in two planes forming a kink with one another.
27. Texturing machine according to any of claims 15 to 26, characterised in that at least one nozzle (149) for wetting the yarn (4) with a coolant is arranged within the protective body (116), the nozzle (149) communicating with a metering device (150) for conveying and metering the coolant and arranged outside the protective tube (116).
28. Texturing machine according to claim 1 or according to the preamble of claim 1, characterised in that a protective body (116) which surrounds the yarn (4) without contact and is open at its ends for the entry and exit of the yarn is arranged between the first heater (18) and the cooling device (19), in that the protective body (116) has at least one aperture (133) by means of which the inner chamber (131) of the protective body (116) is connected to an extraction device (14) and in that at least one nozzle (149) for wetting the yarn with a coolant is arranged inside the protective body (116) and is connected to a metering device (150) for conveying and metering the coolant and arranged outside the protective body (116).
29. Texturing machine according to claim 27 or 28, characterised in that the nozzle (149) is an atomising nozzle which sprays the coolant in the form of very fine droplets onto the yarn (4).
30. Texturing machine according to claim 27 or 28, characterised in that the nozzle (149) comprises a bearing surface (151) contacted by the yarn (4) and in that a nozzle duct (152) opens in the manner of a funnel in the bearing surface (151).
31. Texturing machine according to any of claims 27 to 30, characterised in that the metering device (150) is adjustable in such a way that the amount of coolant issuing at the nozzle (149) is smaller than the amount of coolant vaporised by the yarn.
32. Method for the false twist texturing of a yarn in which the yarn is taken from a supply bobbin, textured in a false twist zone and then wound into a bobbin package and in which the yarn is heated and cooled to fix a false twist within the false twist zone, the yarn being guided over a cooling surface with contact for cooling purposes (contact cooling), characterised in that the yarn is wetted with a metered amount of a coolant after the heating process and prior to the contact cooling process.
33. Method according to claim 32 characterised in that the amount of coolant is metered in such a way that the coolant on the yarn evaporates substantially completely.

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