KR101431997B1 - Apparatus for melt-spinning, drawing and winding up a plurality of multifilament threads - Google Patents

Abstract

The present invention relates to an apparatus for melt-spinning, drawing and winding multifilament yarns, comprising a spinning device, a drawing device, a bobbin-winding device, and a finishing device formed by two separate finishing stations Respectively. Closing stations are disposed upstream and downstream of the drawer in the actual runway and at least one of the closure stations in accordance with the present invention is configured to be controllable and / or switchable to set the wetting of the yarn. In this way, the wetting of the yarn, which is always suitable for certain operating conditions, can be carried out.

Description

[0001] APPARATUS FOR MELT-SPINNING, DRAWING AND WINDING UP A PLURALITY OF MULTIFILAMENT THREADS [0002]

The present invention relates to an apparatus for melt-spinning, drawing, and winding a plurality of multifilament yarns according to the preamble of claim 1.

In the manufacture of synthetic yarns, and particularly for the application of fabrics, multifilament yarns are used in combination with yarn filaments in combination with guide elements and godets in order to combine the various fine filaments in the yarn and generate an anti- Is wetted after melt-spinning and cooling, so that it can be reliably guided over the entire length of the melt. It is therefore common to wet the yarns immediately following the first cooling of the filament strands. However, the wetting liquid introduced into the composite yarn also has the disadvantage that the wetting liquid must likewise be heated or evaporated depending on the type and composition in order to heat the material of the yarn to the specified treatment temperature, in particular during the heat treatment. Thus, various methods and equipment are known in the art to enable the wetting fluid to be injected into the chamber.

Thus, for example, DE 196 49 809 A1 discloses a facility in which the finishing device is formed by two separate finishing stations. At a first finishing station located upstream of the drawing device, a pre-finishing operation is performed on the yarn. In this case, the finishing amount of the wetting liquid, which is adjusted by the subsequent heat treatment, is supplied in a yarn. Following the heat treatment and withdrawal, afterfinishing takes place at the second finishing station to introduce the amount of wetting liquid required for further treatment of the yarn. Thus, each of the finishing stations supplies a fixed, predetermined amount of the wetting fluid to the yarn.

WO 2009/141424 A2 discloses additional equipment for melt-spinning, drawing and winding multifilament yarns, and the finishing device has only one finishing station located downstream of the drawing device. In this installation, the multifilament yarns start from the spinning device without any wetting. In this case, the yarns are drawn out in a dry state. However, additional means such as, for example, intermingling devices are needed to ensure minimum actual bond within the chamber prior to withdrawal operation.

However, these devices formed by a finishing station in which the finishing device is directly assigned to the cooling device are in principle also known from the prior art, as for example from DE 103 09 966 A1. In the known installation, a finishing station is assigned to the cooling system and is configured to be controllable for applying the wetting liquid. Thus, the finishing station can be operated between the process speed for producing the yarn and the piecing state at the start of the process. In this regard, a fixed amount of predetermined wetting fluid is supplied to the chambers in each operating state.

However, it is further known from the prior art to change the amount of wetting liquid applied during the process in accordance with continuously detected process parameters or production parameters. Such a facility is disclosed, for example, in DE 44 44 150 A1. In this case, the finishing station assigned to the cooling apparatus is controlled according to the process monitoring so that the applied finishing amount is increased or decreased depending on the measured value.

All of the known installations for melt-spinning, drawing and winding multifilament yarns have a common feature that covers the respective operating states for producing multifilament yarns only to a limited extent. However, during the production of multifilament yarns in the melt-spinning process, a wide variety of operating conditions arise. Thus, first, at the start of the process, after bonding, the threads are continuously threaded into the process assemblies, preferably through guided pacing aid. It should be ensured that the continuously extruded filament strand can be fed continuously to the waste container through the pizing operation. Once the pacing operation is complete, the process assemblies are accelerated to the process speed required to produce the yarns in the next step. During this time, the yarns are already wound to form a bobbin, but this is treated as a debris yarn. Thus, after the process speed is achieved, a change in the bobbin is performed such that mixing of yarns in the bobbins does not occur. In addition, operating conditions must be considered in which the yarns are continuously fed, preferably due to yarn breaks, to be cut off upstream of the drawer and discarded through the stationary suction-extractor.

Therefore, it is an object of the present invention to provide a comprehensive type of installation in which the flexible wetting of the yarns is possible according to the specific requirements and operating conditions.

The object of the present invention is achieved by an apparatus having a feature according to claim 1 according to the invention.

Advantageous developments of the invention are defined by the features of the dependent claims and the combination of these features.

The present invention is distinguished by the fact that at least one of the finishing stations can be used to obtain wetting of yarns suitable for a particular operating condition. In this case, as an alternative, it is possible to change only the amount of the wetted liquid that has been released, or switch the finishing station completely off and switch on. In this case, likewise, the amount of wetting released can be varied. To this end, at least one of the finishing stations is configured to be controllable and / or switchable to set the wetting of the yarn.

In particular, in order to produce fully stretched yarns subject to heat treatment to be drawn out, the first finishing station uses the development of the present invention which is capable of selectively switching to an operating state for wetting the yarn or a dormant state for not wetting the yarn . Thus, during the production of the yarns, the yarns can be wet only through the second finishing station, so that the first finishing station is set to the dormant state to start the drying yarns. In contrast, the chambers can be immediately wetted by the first finishing station to be threaded in, so that the chambers can be pinched against the process assemblies in a protected manner against static expansion, Can be released.

To maintain the low frictional force of the yarn during the guidance of the yarns, the first finishing station is preferably formed with a movable wetting means so that the wetting means can be selectively moved to a rest position, Can be informed. For threading and piercing threads, the threads are guided while contacting the threads to the wetting means. However, during production of the yarns, contact of such yarns may be avoided in that the wetting means is set to the rest position.

The thread cohesion during threading-in of the threads can preferably be improved in that the wetting means of the first finishing station is formed by a plurality of pin lubricants held on a conventional movable carrier. Thus, all of the yarns extruded from the spinning position can be simultaneously guided through the wetting means.

During manufacture of the seals, each of the seals is wetted by a second closing station on the outlet side of the drawer. To this end, the finishing station preferably comprises stationary wetting means having contact surfaces with fine holes through which threads can be guided in parallel at high speed. What is needed here is to achieve partial roofing at the contact surface with fine pores, so that a sufficient wetting of the threads occurs even at very high thread running speeds.

Since the requirements placed on the finishing stations are substantially determined by the various operating conditions, the finishing device is preferably formed with two separate supply units assigned to finishing stations. In this case, the supply units may be connected together in one tank or preferably separately in the two tanks. Thus, different wetting liquids can be supplied to the chambers at the first finishing station and at the second finishing station.

The equipment according to the present invention will be described in more detail by means of the following several exemplary embodiments with reference to the accompanying drawings.

Figure 1 schematically shows a side view of an exemplary embodiment of a plant according to the invention.
Figure 2 schematically shows a side view of a further exemplary embodiment of a plant according to the invention.

Figure 1 shows a side view of a first exemplary embodiment of a device according to the invention for melt-spinning, drawing and winding a plurality of multifilament chambers. In order to melt-spin the multifilament yarn, there is provided a spinning apparatus 14 having a heated spinning beam 1, the spinning beam 3 having a spinnerette 3 with various nozzle openings on its underside, And a melt inflow portion 2 on the upper side. The melt inlet 2 is connected to a melt source (not shown), such as an extruder. In addition, melt-guiding and melt-transporting components not to be discussed in more detail herein may be disposed within the spinning beam 1.

The spinning beam 1 has a plurality of spinnerets 3 for spinning a plurality of yarns at the same time in a zigzag fashion or in a row arranged side by side parallel to one another. The spinning beam 1 is oriented transversely to the drawing plane so that only one spinnerette 3 of the spinnerets can be seen in Fig. Accordingly, the subsequent devices and assemblies are described in more detail on the basis of only one thread run. In principle, each of a total of five chambers, produced side by side in parallel, are processed simultaneously.

Below the spinning device 14 there is provided a cooling device 6 formed from a cooling shaft 8 and a blower 7. The cooling shaft 8 is arranged below the spinnerette 3 so that the various filaments 4 extruded by the spinners 3 run through the cooling shaft 8. The cooling airflow can be generated through the blower 7 and the cooling air stream is introduced into the cooling shaft 8 so that the filament 4 extruded by the spinneret 3 is uniformly cooled by the cold flow .

Below the cooling shaft 8, a hollow thread guide 9 is arranged for coupling the filaments 4 with the filament bundle 5. To this end, the hollow thread guide 9 is arranged centrally under the spinnerette 3, so that the filaments 4 are uniformly engaged in the hollow thread guide 9 of the cavity.

The first finishing station 16.1 of the finishing device 16 is assigned to the thread guide 9 of the cavity. The finishing station 16.1 has the wetting means 36.1, the feeding unit 17.1 and the tank 19.1 in the exemplary embodiment and the feeding unit 17.1 is controlled by the control device 18. [ The wetting means 36.1 are arranged in a fixed manner in this case and are associated with a hollow threaded guide 9. The supply unit 17.1 preferably has a metering pump, and a controllable volumetric flow rate of the wetting liquid can be produced by this metering pump.

Beneath the cooling shaft 8 is disposed an adjacent downshaft 10 having an inlet chamber guide 11 disposed at the outlet side. Within the downshaft 10, the filament bundles 5 are joined in the processing space based on the spinning pitch determined by the spacing of the spinners. To this end, the filament bundles 5 are first introduced into the processing space with respect to each other by the inlet thread guide 11 so that the filament bundles 5 are guided parallel to one another in small intervals ranging from 3 to 8 mm .

Below the downshaft 10, there is disposed a take-out device 15 having a plurality of driven gates 20.1 to 20.4. In such a case, the highdates 20.1 and 20.2 form the first highdetched pair 13.1, and the highdates 20.3 and 20.4 form the second highdetched pair 13.2. The high dents 20.1 and 20.2 of the first high dot pair 13.1 are arranged in layers and are respectively driven by separate motors in the opposite rotational direction and at the same circumferential speed. In this regard, the left-handed electric motors and the first-order electric motors are used for driving the highdates 20.1 and 20.2 and the highdates 20.3 and 20.4 of the second highdate pair 13.2 do. The high-defect casings of the high dice (20.1 to 20.4) are particularly heated to withdraw the yarns in the transition region between the two high-dot pairs (13.1 and 13.2).

In order to start the filament bundle 5 from the spinning zone, the yarn brake 12 is disposed upstream of the first high detective pair 13.1 of the yarn running path. In this exemplary embodiment, the yarn brake 12 is formed by a plurality of deflection rollers mounted in a freely rotatable manner. The filament bundle 5 is guided around the deflecting rollers in one case with a partial looping, so that the filaments of the filament bundle 5 advance to the banded arrangement. In this way, band-like yarn guidance can be achieved around the high diths 20.1 to 20.4.

The first high detective pair 13.1 is used to start the filament bundles 5. To this end, the filament bundles 5 are guided around the guide casings of the highdates 20.1 and 20.2 in single-part roofing. The filament bundles (5) alternately surround the guide casings of the highdates (20.1) and (20.2) in the S shaped yarn traveling path. To this end, the gates 20.1 and 20.2 are preferably arranged such that in each case a roofing angle of greater than 180 DEG is set in the actual runway.

The second high dot pair (13.2) is driven at a withdrawal speed greater than the starting speed. In this case, the filament bundles are likewise guided around the high dents 20.3 and 20.4 in a S-shaped fashion with a single roofing. The highdetched pairs 13.1 and 13.2 are placed in the high-defect box 21. To this end, the filament bundles 5 are guided through the inlet of the high detector box 21 and through the outlet from the high detector box 21.

A second deadline station 16.2 and an additional driven high detent 20.5 are disposed under the high detect box 21. Closing station 16.2 has stationary wetting means 36.2 connected to supply unit 17.2. A supply unit 17.2, preferably formed by a metering pump, is connected to a tank 19.2 containing a wetting liquid. The wetting means 36.2 has a fine-pored contact surface 37 that comes into contact with the filament bundles 5 guided between the high dots 20.4 and 20.5.

Further, the high dot 20.5 is assigned to an additional driven highdet 20.6 disposed on the bobbin-winding device 23. Between the high dots 20.5 and 20.6 there is provided an intermixing device 32 for producing the uniformity of the wetting liquid in the yarns 22 in the stretched yarn piece and for forming the cohesive force of the yarn by the formation of the binding knot . In this case, the tension of the yarn for intermixing the yarns 22 can be advantageously determined by the speed difference between high ditts 20.5 and 20.6.

Below the high dice 20.5 and 20.6, a bobbin-winding device 23 is arranged. In this exemplary embodiment, the bobbin-winding device 23 is formed by what is known as a bobbin-winding turret machine, which has two freely projecting bobbin winding spindles 27.1 and 27.2 And a rotatable spindle carrier (29). The spindle carrier (29) is mounted on the machine frame (30). In this case, the bobbin-winding spindles 27.1 and 27.2 can be guided alternately to the operating area for winding the bobbin and to the changing area for replacing the bobbin. The machine frame 30 is provided with a transverse device 25 and a pressure roll 26 to wind the yarn 22 to form the bobbin 28. The bobbin 28 is wound around the yarn 22, Above the transverse device 25 is provided a head part thread guide 24, which guides the entrance of the chambers 22 to the winding station. In this exemplary embodiment, the head portion seal guide 24 is formed by freely rotatable deflecting rollers to deflect the thread exiting the highdet 20.6 from the substantially horizontal dispensing surface to the winding station .

The exemplary embodiment shown in Fig. 1 shows an operating state in which a plurality of multifilament chambers are successively produced in parallel with each other. In this case, the necessary thread-worn operation of the threads can be performed in various ways. In a first alternative embodiment, at the first finishing station 16.1, the supply unit 17.1 is set to a rest state by the control device 18 so that the wetting liquid does not exit from the wetting means 36.1. In this regard, the filament bundles 5 are exclusively engaged by the hollow yarn guides 9 without the addition of wetting liquid. The filament bundles 5 exit the downshaft 10 substantially in the dry state and then are fed to the drawer 15. After being drawn by the drawing unit 15, the filament bundles are wetted with the wetting solution at the second finishing station 16.2. In such a case, it is preferable to use a low-viscosity pure oil or an oil-water emulsion as the wetting liquid in order to form the cohesive force. Then, the distribution of the wetting liquid in the composite yarn and the final yarn cohesion force are set through the intermingling device 32. [

The supply unit 17.1 is set via the control device 18 so that the wetting liquid taken from the tank 19.1 at the finishing station 16.1 is supplied to the filament bundle 5 in a minimum amount when a filament sensitive to static expansion is generated. The devices can be used in accordance with the exemplary embodiment according to FIG. In this regard, the yarn guidance between the cooling device 6 and the drawing device 14 can be optimized in particular by this. Because of the use of two separate tanks 19.1 and 19.2, different wetting fluids for wetting the chambers can be used in the lapping stations 16.1 and 16.2.

When the yarns are to be fished by the operator before the start of the process, the filament bundles 5 are guided by the manual guide suction gun 38 through the spinnerette 3 after bonding. This state is shown by the dotted line in Fig. In this case, the filament bundle is continuously wetted with the wetting solution through the first finishing station 16.1. To this end, the supply unit 17.1 is switched via the control device 18 to an operating state in which the wetting liquid taken from the tank 19.1 is continuously supplied to the manually guided filament bundles. It is thus easy to thread and pierce filament bundles 5 in subsequent process assemblies of drawing device 21 and winding device 23. The static expansion of the filament bundles which makes the firing more difficult is avoided. In addition, it is impossible for the filaments to be trapped and tangled at the inlet to the manual guided suction gun.

Figure 2 schematically shows a side view of a further exemplary embodiment of a plant according to the invention. The exemplary embodiment according to FIG. 2 is substantially the same as the exemplary embodiment according to FIG. 1, in which only substantial differences are described, and otherwise, reference is made to the foregoing description.

In the exemplary embodiment shown in Fig. 2, the finishing station 16.1 has a movable wetting means 36.1. The wetting means 36.1 is formed by the pin lubricator 33 held on the carrier 34 in this exemplary embodiment. The carrier 34 is movable back and forth in the transverse direction in the yarn traveling direction in the guide rail 35. [ Thus, the wetting means 36.1 can be selectively guided to the operating position while contacting the yarn, or can be guided to the rest position without contacting the yarn. Figure 2 shows the rest position of the wetting means 36.1. The operating position of the wetting means 36.1 is shown by the dashed line. The wetting means 36.1 are connected by a flexible line to a supply unit 17.1 connected to the tank 19.

The drawing device 15 disposed below the downshaft 10 is embodied in the entrance area with the departure gate 39 in the exemplary embodiment. The starting gate 39 starts the filament bundle 5 from the spinning device 14. The remaining remotes of the drawing device 15 are formed in the same manner as the above-described exemplary embodiments, and will not be further described in this regard.

A second finishing station 16.2 located downstream of the drawer 15 is likewise formed in the same manner as in the exemplary embodiment and the supply unit 17.2 and the supply unit 17.1 of both of the finishing stations of both are connected to the tank 19 do. Thus, the same wetting fluid is applied to the threads of both of the finishing stations.

In the exemplary embodiment of Figure 2, the finishing station 16.1 is mostly used only to wet the filament bundles during the picing process. To this end, the wetting means 36.1 of the finishing station 16.1 are guided to the operating position so that the filament bundles 5, which are started via the manual guiding aspiration gun 38, are wetted with the wetting liquid before proceeding to the suction gun . Once the joining process is complete and the production operation can begin, the wetting means 36.1 is guided to the rest position. To this end, the carrier 34 is guided to the rest position on the guide rail 35 without contacting the yarn from the yarn running path. The carrier 34 may in this case be adjusted manually or through an actuator.

The carrier 34 of the finishing station 16.1 has in each case one pin lubricator 33 per chamber so that the introduction and retraction of the wetting means 36.1 is uniformly provided for all of the parallelly guided chambers do. In this regard, cavity conditioning can be done easily.

It should be noted, however, that the closure stations 16.1 and 16.2 may have separate wetting means for each actual runway. In principle, all the usual design variations for wetting multifilament yarns can be used here.

In addition, the supply unit 17.2 may be provided with a separate control device so as to be able to make changes to the finishing application of the yarns during the process.

1 Spinning beam
2 melt inlet
3 Spinnerette
4 filament
5 filament bundles
6 Cooling system
7 blowing device
8 cooling shaft
9 collective room guide
10 Down Shaft
11 Entry Room Guide
12-thread brake
13.1, 13.2 < RTI ID = 0.0 >
14 Spinning device
15 Drawer
16 Finishing device
16.1, 16.2 Closing station
17.1, 17.2 Supply Unit
18 control device
19, 19.1, 19.2 Tanks
20.1 ... 20.6 Goethite
21 Detect box
22 rooms
23 Bobbin-winding device
24 Head thread guide
25 transverse machine
26 pressure roll
27.1, 27.2 bobbin -
28 bobbin
29 Spindle carrier
30 machine frame
31 Bobbin - Winding Sleeve
32 intermixing device
33-pin lubricator
34 carrier
35 Guide rail
36.1, 36.2 wetting means
37 contact surface
38 Inhalation gun
39 Take-off Goddess

Claims (8)

1. A facility for melting-spinning, drawing and winding a plurality of multifilament yarns,
The apparatus includes a cooling device 6, a cooling device 6, a drawing device 15, a bobbin-winding device 23, and a cooling device 6 for wetting the yarns, (16) arranged between the two separate finishing stations (23) arranged upstream and downstream of the drawing device (15) in a thread run, the finishing device (16) 16.1, < / RTI > 16.2,
The first finishing station 16.1 can selectively switch to an operating state to wet the yarn or to a dormant state that does not wet the yarn,
Characterized in that the first finishing station (16.1) comprises a movable wetting means (36.1) which can be selectively guided into a rest position in which the operating position in contact with the thread also does not contact the thread, Equipment for melt-spinning, drawing and winding. The method according to claim 1,
Characterized in that said wetting means (36.1) are formed by a plurality of pin lubricators (33) held on a common moveable carrier (34), wherein the plurality of multifilament yarns are melt- And equipment for winding. 3. The method according to claim 1 or 2,
Spinning, drawing and winding a plurality of multifilament yarns, characterized in that the second finishing station (16.2) has a stationary wetting means (36.2) with a contact surface (37) with fine holes. The method according to claim 1,
Characterized in that the finishing device (16) has two separate supply units (17.1, 17.2) connected to the finishing stations (16.1, 16.2) for supplying a wetting liquid. Equipment for melt-spinning, drawing and winding. 5. The method of claim 4,
Characterized in that the feed units (17.1, 17.2) are connected to one tank (19) jointly or separately to two tanks (19.1, 19.2). The multifilament yarns are melt- Equipment for drawing and winding. The method according to claim 4 or 5,
Characterized in that at least one control device (18) connected to one of said feed units (17.1, 17.2) is provided. delete delete

Images