CN110029403B

CN110029403B - Device for drawing, drafting and winding synthetic filament bundle

Info

Publication number: CN110029403B
Application number: CN201811464728.4A
Authority: CN
Inventors: D·鲍尔
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2017-12-04
Filing date: 2018-12-03
Publication date: 2022-07-29
Anticipated expiration: 2038-12-03
Also published as: CN110029403A; DE102017011183A1

Abstract

The invention relates to a device for drawing off, drafting and winding a synthetic yarn bundle, comprising a plurality of godets and at least one winding machine comprising a plurality of winding positions. The godets are held in godet openings in an integral godet wall. Such devices are not flexible with respect to retrofitting between various types of godets and/or various godet arrangements. In the device of the present invention, however, the guide wire tray wall is replaceably retained within the vertical opening of the housing. Thus, in particular fully drawn synthetic threads with different working ranges can be produced.

Description

Device for drawing, drafting and winding synthetic filament bundle

Technical Field

The invention relates to a device for drawing off, drafting and winding a synthetic filament bundle (Fadenschr).

Background

The apparatus is suitable for use in a melt spinning apparatus. The synthetic multifilament yarns emerging from the spinnerets are drawn off from the spinnerets by means of a plurality of godets, drawn off and wound on a winder. These threads

Are guided over a godet in the form of a tow. During this time, the properties of the yarn in the final state are significantly influenced by drawing and heat-treating the yarn. A device according to the preamble is shown in DE102013016426a 1. A total of 8 godets were used in the manufacture of Fully Drawn Yarn (FDY) as shown here. The godet is fixed to the support wall or godet wall. For this purpose, a plurality of corresponding openings are provided in the wall. The support wall is an inseparable part of the guide wire disk module which also contains the operating mechanism, the guide wire device, the suction mechanism, etc. Typically, a cast housing or welded structure is used to secure the component parts of the wire guide disc module, wherein the support wall is part of the cast housing or welded structure. The number and design of the 8 godets is not variable here. Thus, the use of different godet units cannot be realized without replacing all godet modules. A fixed working range thus occurs, i.e. a fixed thread performance limit that can be achieved with this godet configuration. Variations in operating parameters such as the godet speed or its temperature allow for this operating range. It is sometimes desirable to make different wires on the same device that do not fall within a fixed working range.

Disclosure of Invention

The object of the invention is therefore to provide a device according to the preamble, by means of which different working ranges for drawing synthetic threads can be achieved with only a low retrofitting effort.

According to the invention, this task is achieved in that the guide wire disk wall is held displaceably in a vertical opening of the machine frame.

Thus, different guide wire disc devices can be used with very low cost replacement. This applies not only to the number of godets but also to their size and relative position. The desired working range can thus be adjusted very simply. This simplicity occurs on the one hand during the installation of the new godet configuration and also already in its construction. The latter is particularly true because the maximum number of identical components can be used. The main difference is only the design of the godet opening in the godet wall where the godet is mounted. Existing components from a stock may be simply combined as needed to achieve the desired operating range.

For the heat treatment of the threads, several godets are designed to be heated. In order to keep the heat losses small, the godet has a housing. The housing is preferably mounted to the wall of the guide wire tray. The housing can thus be flexibly adapted to the respective godet configuration. If the godet is not heated for process-technical reasons, the housing surrounding the godet can be dispensed with.

In a preferred embodiment of the invention, a further guide wire disc wall is replaceably held in a further vertical opening of the machine frame. Thus, the flexibility is further increased without having to endure stability losses. Embodiments with multiple godet walls allow meaningful combination of godets into certain functional groups, for example for the relaxation or withdrawal of threads.

In two further embodiments of the invention, the frame has an inlet godet opening and an outlet godet opening. Thus, even if the godet configuration is changed by replacing one or more godet walls, no upstream or downstream component adaptation is required. In particular the distance from the upstream spinning device and the entry of the thread into the downstream winder remain unchanged.

In a preferred embodiment of the invention, the godet itself is also mounted on the godet wall. This further highlights the modular approach of the present invention. Thus, for example, identical godets can be arranged at different mutual distances by means of different godet walls. Thus, the total number of godets required to obtain many different arrangements can be reduced. Maintenance of some godets is therefore also simplified, wherein the downtime of the entire device is also minimized.

The godet is preferably formed by a godet sleeve, a godet flange and a drive mechanism. The thread is guided on a godet sleeve, which is driven in rotation by means of a drive mechanism, so that the thread is drawn or slackened, and the flange allows the removable mounting of the godet on the godet wall.

The drive mechanism and the godet sleeve are preferably located on different sides of the godet flange. This advantageously affects the vibration performance or stability of the entire device. In addition, the drive mechanism is thus protected by the guide wire disk wall against dirt from the guide wire disk sleeve region. For example, the threads can be oiled with a fluid during operation of the apparatus

Wetting for better processing, oiling fluid will get in the way of unprotected drive mechanisms.

By means of the device features described above, synthetic threads (FDY) can be produced with a wide range of properties, in particular, possibly full draft.

Drawings

The device according to the invention is described in detail below with reference to the accompanying drawings, in which:

figure 1 schematically shows a front view of a first embodiment of the device according to the invention,

figures 2a to 2c schematically show different variants of the wall of the first guide wire disc,

figures 3a to 3c schematically show different variations of the wall of the second guidewire disk,

FIGS. 4a to 4d schematically show different variants of a full godet frame, an

Fig. 5 shows a schematic example of a godet in a side view.

Detailed Description

The same reference numerals are used throughout the figures and therefore the same parts carry the same reference numerals. Possible exceptions are explicitly mentioned in the following embodiments. The basic structure of the device is described with reference to fig. 1 in conjunction with fig. 4 a.

Above the winder 5, a plurality of godets 19.1-19.8 are provided. The godets 19.1-19.8 are fixed on a godet frame 3, wherein the godet frame 3 and the winding stand 4 are part of the stand 2. In order to better illustrate the godet frame 3, which is illustrated in fig. 1 but is not equipped with godets 19.1 to 19.8, which can be seen in fig. 4 a. The guide wire tray 3 also has two vertical openings 14.1, 14.2 to enable the respective components to be detachably mounted on the guide wire tray 3. The winding machine 5 has a top thread guide 6, a reciprocating mechanism 7 and two bobbin spindles 8 mounted on a turntable 10 and connected to a spindle drive 11. In this example, four winding positions 13 are thus formed, in which one bobbin 9 can be wound.

During operation of the apparatus, a plurality of synthetic filaments are extruded from a plurality of spinnerets. They are bundled into a plurality of wires 1, of which four are shown here by way of example. For the sake of overview, these components of the melt spinning apparatus are not shown.

The threads 1 are drawn off from the spinneret in the form of a thread bundle by means of godets 19.1 to 19.8 and drawn off in order to be subsequently wound on a winder 5 to form bobbins 9. The threads 1 are guided adjacent to one another in the form of a bundle via godets 19.1 to 19.8. To wind the tow into several bobbins 9, the tow is first separated by means of the top thread guide 6 of the winder 5. The reciprocating mechanism 7 serves for this purpose to guide the thread 1 back and forth, so that a bobbin 9 having the width resulting therefrom is present. The reference numbers are shown here by way of example for one winding position 13, since the other three winding positions have the same configuration. One of the two spindle spools 8 is in operation, wherein it is driven in rotation by a corresponding spindle drive 11. By means of the turntable 10 and the corresponding turntable drive 12, the bobbin spindles 8 are always moved back and forth between the operating position and the waiting position after the bobbins 9 have reached their desired size.

The arrangement and function of several godets 19.1-19.8 are described below. Three small godets 19.1, 19.7 and 19.8 form the inlet and outlet of the godet unit. They are mounted directly on the guide wire tray 3, thus ensuring a fixed position with respect to the subsequent processing unit. For this purpose, the godet frame 3 has an inlet godet opening 15 for the godets 19.1, a godet opening 18.7 for the godets 19.7 and an outlet godet opening 16 for the godets 19.8, where each godet is held in its respective opening. In the region of the last two godets 19.7, 19.8 of the thread run, an oiling and swirling device, which is not shown here for the sake of clarity, is provided.

The godets 19.2 and 19.3 are used together with the godet 19.1 for drawing the threads 1 out of the spinneret and for preheating the threads 1 when they are heated. In addition, the godets 19.1, 19.2 and 19.3 apply a holding force to the thread 1 for subsequent drawing. Fig. 2a to 2c show different variants of the godets 19.2 and 19.3. The godets 19.2, 19.3 are then fixed to a godet wall 17.1. For this purpose, the godet wall 17.1 has two godet openings 18.2, 18.3. The guide wire tray wall 17.1 is again fixed to the guide wire tray 3 as shown in fig. 4a to 4 d. The guide wire disk wall 17.1 is held in a vertical opening 14.1 of the machine frame 2 by a detachable connection. Fig. 2a shows two heated godets 19.2, 19.3, which have a housing 23.1 in order to minimize heat losses. The housing 23.1 is fixed to the guide wire disk wall 17.1 and can therefore be replaced with the guide wire disk wall 17.1.

Each individual godet includes a godet hub 20, a godet flange 21 and a drive mechanism 22, as is shown by way of example in fig. 5 at the godet 19.2. The godet 19.2 is fixed to the godet wall 17.1 by means of a godet flange 21. The godet 19.2 now passes through the godet wall 17.1, so that the godet sleeve 20 and the drive 22 are located on opposite sides of the godet wall 17.1. The fixing of the other godets 19.1-19.8 is carried out in a similar manner.

Fig. 2b shows a variant in which all the components are designed with slight changes compared to fig. 2 a. The godets 19.2, 19.3 are slightly smaller and unheated, which affects the size and arrangement of the godet openings 18.2, 18.3 in the godet wall 17.1. Since there is no heating, the enclosure can be discarded.

Fig. 2c shows a final variant of the godets 19.2, 19.3. In this case, the thread 1 is already drawn between the godets 19.2 and 19.3, in a variant different from that of fig. 2a and 2 b. The godet 19.3 is therefore already used for the relaxation of the thread 1 after drawing. In order to generate the draw, the godet 19.3 rotates more rapidly in the variant of fig. 2c during operation of the device than the godet 19.2. In this case, a housing 23.1 of the godet 19.3 is sufficient in this variant, while the godet 19.2 is accessible from the outside. When the godet 19.2 is specified to be heated, the heating is designed only for the low temperatures of the corresponding godet jacket, which explains the reason for the omission of the housing.

In principle, however, these godets 19.4-19.6 are provided for relaxation. In the above-described exceptional case of fig. 2c, an additional slack godet, namely godet 19.3, is therefore provided for use.

Various variants of the godets 19.4-19.6 for the relaxation are shown in the variants fig. 3a, fig. 3b and fig. 3 c. The godets 19.4-19.6 are held on the second godet wall 17.2. For this purpose, corresponding godet openings 18.4-18.6 are provided in the godet wall 17.2. The three godets 19.4-19.6 are also surrounded by a housing cover 23.2. The housing 23.2 has a door 24, which is drawn on the left and is open, so that the godets 19.4-19.6 are visible. In order to obtain a relaxation of the thread 1 during the operation of the device, the godets 19.4-19.6 are designed to be heated. The difference between the variant of fig. 3a and the variant of fig. 3b is the diameter of the godets 19.4-19.6. In the variant of fig. 3b, the diameters of the godets 19.4-19.6 are slightly smaller than in the variant of fig. 3 a. The device power consumption is reduced. The working range is then slightly smaller, since the relaxation process may be less strongly performed.

In fig. 3c, two additional unheated godets 19.9, 19.10 are arranged downstream of the relaxation godet in the course of the thread. By means of the two cold godets 19.9, 19.10, a particularly bright yarn 1 can be produced. In the case of such bright filaments 1, a very low fluffing rate can be achieved by means of two additional unheated godets 19.9, 19.10.

In fig. 4a to 4d, various possibilities of combination of the two guide wire disk walls 17.1 and 17.2 are shown. The guide wire disk wall 17.1 is held detachably in this case in an opening 14.1 of the guide wire disk carrier 3, while the guide wire disk wall 17.2 is held detachably in a further opening 14.2 of the guide wire disk carrier 3. Fig. 4a shows a combination of fig. 2a and 3 a. In operation of the device, the filament bundle enters the filament guiding device via the first filament guiding disc 19.1. By means of the first and the two subsequent godets 19.2, 19.3, the thread 1 is drawn off and reaches the desired drawing temperature as the godets 19.2, 19.3 are heated. Between the godet 19.3 and the godet 19.4, the thread 1 is drawn. For this purpose, the godet 19.4 is driven at a significantly higher speed than the godet 19.3. On and between the godets 19.4, 19.5 and 19.6, the thread 1 is slackened to adjust important properties such as crimping of the thread 1. The end product wound into bobbins 9 by means of the winder 5 is fully drawn yarn. Typical raw materials used in the process are polyesters such as polyethylene terephthalate or polyamides. But it is also conceivable to use other synthetic polymers as starting materials. It is also common to add polymeric additives to improve the properties with respect to processability or performance of the final product. Generally, the manufactured thread 1 is used in textiles.

Fig. 4b is very similar to fig. 4a, only the guide wire disc wall 17.1 is replaced by the guide wire disc wall 17.2 of fig. 2 b. And the two godet walls 17.1, 17.2 differ only in the different sizes of the godet openings 18.4-18.6. A plurality of smaller godets 19.4-19.6 are therefore mounted on the godet wall 17.2. With the variant of fig. 4b, the fully drawn yarn 1 can be manufactured with lower energy consumption as already described with respect to fig. 2 b. However, the lower energy consumption leads to a slightly smaller working range, i.e. several special thread properties that can be obtained with the variant of fig. 4a can no longer be obtained with the variant of fig. 4 b.

Fig. 4c shows a combination of the components of fig. 2b and 3 c. The godets 19.2, 19.3 and the additional godets 19.9, 19.10 are not heated and are designed smaller than in the previous example. In this example, drawing is also carried out between the godet 19.3 and the godet 19.4. However, the temperature of the thread 1 during its drawing is significantly lower than in the previous examples, since the godets 19.2, 19.3 are not heated. Such "cold drawing" results in stronger drawing and corresponding wire properties. In addition, a smaller, unheated godet is advantageous in manufacture over a larger, heated godet. The two godets 19.9 and 19.10 serve to cool the thread 1 again rapidly after relaxation. It is thus ensured that the temperature during the subsequent oiling of the thread 1 in the region of the godets 19.7 and 19.8 is significantly below the boiling point of the oiling fluid. The thread 1 can thus be cooled to a temperature below the boiling point of the preparation fluid by means of the two unheated godets 19.7, 19.8. The oiling of the thread 1 is thus carried out in a very gentle manner, avoiding damage to the thread 1.

In the last variant shown in fig. 4d, the variants of fig. 2c and 3a are combined with each other. The thread 1 first passes through an inlet godet 19.1. The thread 1 is then heated to the drawing temperature by means of the godet 19.2 without a jacket. The thread 1 is drawn between the godet 19.2 and the godet 19.3. The godets 19.2 and 19.3 are held on the first godet wall 17.1. On and between the godets 19.3-19.6, the thread 1 is relaxed. That is, unlike in the previous example, a godet, godet 19.3, is also available for the heat treatment/relaxation of the drawn thread 1. It is thus possible to produce a fully drawn synthetic thread 1 which is particularly wrinkle-free.

As shown in fig. 4a, 4b, 4c and 4d, the godet unit can be modified by simply replacing one or both godet walls 17.1, 17.2. For this purpose, they are fixed in openings 14.1, 14.2 on the thread guide plate carrier 3 by means of a detachable connection, not shown in detail. For this purpose, for example, a conventional screw connection can be selected. Thus, when they require a wire 1 or an economic benefit such as energy saving, they can be switched very quickly between different guide wire disc devices.

The variants shown in fig. 4a, 4b, 4c and 4d are only examples. Other combinations and other representations of the godet itself and its arrangement in the wall of the godet can obviously be realized in the sense of the invention.

Claims

1. A device for drawing, drafting and winding a synthetic filament bundle, comprising a plurality of godets (19.2-19.3) and at least one winding machine (5) having a plurality of winding positions (13), wherein the godets (19.2-19.3) are held on an integral godet wall (17.1), wherein a godet opening (18.2-18.3) is provided in the godet wall (17.1) for each godet (19.2-19.3), characterized in that the godet wall (17.1) is held in a replaceable manner in a vertical opening (14.1) of a machine frame (2), the machine frame (2) having an inlet godet opening (15) and/or the machine frame (2) having an outlet godet opening (16).

2. The device according to claim 1, characterized in that the godet wall (17.1) has a housing (23.1) for at least one of a plurality of godets (19.2-19.3) mounted thereon.

3. Device according to claim 1 or 2, characterized in that a further guide wire disc wall (17.2) is held in a replaceable manner in a further vertical opening (14.2) of the machine frame (2).

4. Device according to claim 1, characterized in that the godets (19.2-19.3) are held on the godet wall (17.1) in a replaceable manner.

5. The device according to claim 1, characterized in that each of the godets (19.2-19.3) has a godet hub (20), a godet flange (21) and a drive mechanism (22).

6. The device according to claim 5, characterized in that the godet hub (20) and the drive mechanism (22) are arranged on opposite sides of the godet flange (21).