TW201814094A - Device for cooling a heated yarn - Google Patents

Abstract

The invention relates to a device for cooling a heated yarn, wherein the yarn is guidable in the groove base of an elongate cooling groove of a cooling body. The cooling groove by way of a metering opening in the groove base is connected to a metering installation for supplying a cooling liquid. In order for the environmental stresses by vapours and residual cooling liquids that arise therein to be prevented, according to the invention the cooling body is encapsulated in a housing, and the housing has a threading slot for introducing the yarn, said threading slot extending between a yarn inlet and a yarn outlet on the housing.

Description

Device for cooling hot yarn

The invention relates to a device for cooling hot yarns as described in the preamble of claim 1.

In order to process spun synthetic yarns, yarns are known to undergo crimping during the weaving process. Here the yarn is oriented and crimped in a so-called weaving zone. To crimp it, the yarn receives false twists that propagate in the opposite direction of the yarn travel. The yarn in this twisted state is heated to a temperature in the range of 200 ° C. The plasticity obtained here for the yarn material results in twisting individual filaments that are pressed into the yarn. To set this yarn structure, the yarn is then immediately cooled to a temperature of about 80 ° C. This keeps the curl in the yarn and achieves the desired processing. The cooling of the yarn here is preferably effected by contacting the yarn on its surface with an air-cooled cooling track. However, this type of cooling track basically has the disadvantage that a relatively long cooling section is required in order to achieve proper cooling in the case where the yarn runs at a higher speed. Therefore, regarding the cooling of the yarn with a cooling liquid, the prior art has known devices useful for cooling hot yarns in order to be able to achieve the shortest possible cooling section.

A generic device for cooling hot yarns is known, for example, from European patent EP 0 403 098 A2. With this known device, the cooling body is provided with a cooling groove having a plurality of depressed groove pockets at the bottom of the cooling groove. The cooling tank is connected to the cooling liquid reservoir with a capillary tube, thereby continuously introducing cooling liquid to the cooling tank. The hot yarn is guided through the cooling tank in a contact manner and cooled with a cooling liquid. The yarn is then guided across a downstream cooling track. Collect and return the remaining cooling liquid leaving the cooling tank to the water tank.

With this known device, the cooling body is stored directly in the environment of the machine, so that the rising steam enters the environment unhindered. In addition, excess residue of the cooling liquid adhering to the yarn is carried away by the yarn, resulting in an undesired degree of pollution of the environment and nearby equipment.

At this time, the object of the present invention is to provide a general cooling device for cooling hot yarns, which can avoid the environmental pressure caused by steam and residual cooling liquid.

Another object of the invention is to design a generic device for cooling hot yarns to be user-friendly.

This goal of the invention is achieved because the heat sink is encapsulated in the casing, and because the casing has a threading slot for introducing yarn, the threading slot extends on the casing from the yarn inlet, Yarn exit.

Advantageous improvements of the present invention are defined by the features and combinations of features of the dependent items.

The present invention stands out because the environment of the heat sink is bounded by the casing. The threading slot holes on the housing ensure that the yarn can be guided into the cooling body of the cooling body without any auxiliary tools worthy of consideration. The threading slots on the housing here extend between the yarn inlet and the yarn outlet on the housing. In this regard, the openings in the housing for guiding the yarn can be limited to a minimum.

In order to prevent steam from flowing out of the threading slot holes, it is a particularly advantageous improvement that the device of the present invention arranges the threading slot holes on the side wall of the casing above the cooling slot of the cooling body. In this way, it is known that steam rises from the cooling tank. The side of the threading slot hole does not provide a direct connection between the cooling slot and the threading slot hole.

On the one hand, in order to maintain a predetermined yarn guidance and to make uniform contact with the yarns of the cooling grooves in the weaving zone at the same time, and on the other hand, to enhance the wetting in the bottom of the cooling grooves, the cooling grooves are preferably embodied Formed with a curved groove bottom. For this purpose, the threading slots between the yarn inlet and the yarn outlet are configured to have a curvature that is at least partially equal to the curvature of the groove bottom. Therefore, a substantially constant distance between the cooling groove and the threaded slot hole can be achieved to prevent steam from flowing out of the entire cooling section.

It is possible to improve the yarn guidance in the processing zone, in particular, with the following improvements of the present invention: inside the housing, the yarn inlet is equipped with an inlet yarn guide, and the yarn outlet is equipped with an outlet yarn guide, and the cooling body Yarn extensions. In particular, the angle at which the yarn enters and exits the cooling groove can therefore be set in a particularly accurate and reproducible manner. No special alignment of the cooling body in the weaving machine is required.

In order to make the environment in the casing have a uniform atmosphere as much as possible, a suction opening that can be connected to a suction facility is provided on the casing near the yarn outlet in the casing. Therefore, the steam rising inside the casing can be continuously discharged during operation.

The suction opening is preferably configured in the shell bottom between the cooling body and the yarn outlet so that any residual cooling liquid which is carried away and deposited by the yarn from the cooling tank can be simultaneously discharged.

In order to make the air exchange in the shell as uniform as possible, an air opening to the environment is provided near the yarn inlet in the shell to match the shell. Therefore, continuous fresh air can be supplied. The yarn entry and yarn exit and threading slots preferably have a minimum open cross section. Therefore, the hot air carried by the yarn at the yarn inlet can be reduced.

The metering facility is preferably provided outside the housing and is connected to a heat sink in the interior of the housing by a fluid line. Therefore, a predetermined amount of cooling liquid can be continuously supplied to the cooling tank.

In order to strengthen the cooling yarn, the following improvement of the present invention is particularly advantageous: the cooling groove in a part of the groove bottom has a plurality of recessed grooves in which guide webs used in the groove bottom are separated from each other in various situations. A bag in which the metering openings are arranged in the upstream portion of the bottom of the tank.

The apparatus of the present invention for cooling hot yarns will be explained in more detail below using exemplary embodiments with reference to the drawings.

The first exemplary embodiment of the apparatus for cooling hot yarns is illustrated using a plurality of views of FIGS. 1 to 4. Fig. 1 illustrates a side view of the device of the present invention, Fig. 2 is a front view, Fig. 3 is a longitudinal sectional view, and Fig. 4 is a cross-sectional view. As long as no reference is explicitly made to any of these drawings, the following description applies to both drawings.

This exemplary embodiment of the device according to the invention has an elongated housing 7. An elongated cooling body 1 is provided in the interior of the housing 7. The cooling tank 2 extends on the upper surface of the cooling body 1. The cooling tank 2 extends up to the end face of the cooling body 1. The cooling tank 2 has an arc-shaped tank bottom 3. The metering opening 4 leads to a tank bottom 3 in a run-in region of the cooling tank 2. The metering opening 4 is connected to a metering duct 4.1 penetrating the heat sink 1 to the lower surface. The plurality of grooved bags 3.1 separated from the plurality of webs 3.2 used in the groove bottom 3 are all assembled in a part of the groove bottom downstream of the metering opening 4.

The heat sink 1 is held on the bottom 7.3 of the housing 7 by its lower surface.

In particular, it can be seen from the illustration in FIG. 4 that the environment of the cooling body 1 is encapsulated by the housing 7. Except for the shell bottom 7.3, the shell 7 has a shell cover 7.4 on the opposite side and two shell side walls 7.1 and 7.2 opposite to each other. The housing wall 7.1 is constructed with a plurality of components forming the threaded slot 11.

In particular, it can be seen from the illustration in FIG. 1 that the threading slot 11 extends over the entire length of the housing 7. The threading slot hole 11 in this exemplary embodiment is constructed to have a curvature equal to the curvature of the bottom of the cooling slot 2 slot. Therefore, the threading slot 11 can be assembled to be directly lateral to the heat sink 1 on the housing 7. A threading slot 11 on the end face of the housing 7 is connected to the yarn inlet 8 and to the yarn outlet 9, which can be derived from the illustration of FIG. 2 with the embodiment of the yarn inlet 8.

The yarn inlet 8 and the yarn outlet 9 are arranged on the shell end walls 7.5 and 7.6 of the shell 7. For this purpose, the inlet yarn guide 8.1 is provided on the housing end wall 7.5, and the outlet yarn guide 9.1 is provided on the housing end wall 7.2. The inlet yarn guide 8.1 and the outlet yarn guide 9.1 having a yarn guide groove formed of ceramic are preferably used. In this exemplary embodiment, the inlet yarn guide 8.1 directly forms the yarn inlet 8 and the outlet yarn guide 9.1 directly forms the yarn outlet 9. In principle, the yarn guides 8.1 and 9.1 can be arranged inside the casing 7 so as to be independent of the yarn inlet 8 and the yarn outlet 9.

In particular, it can be seen from the illustration in FIG. 3 that the inlet yarn guide 8.1 and the outlet yarn guide 9.1 are arranged at a short distance from the end face of the cooling body 1. For yarn guidance, the guide grooves of the yarn guides 8.1 and 9.1 interact here with the groove bottom 3 of the cooling groove 2.

It can further be seen from the illustration in FIG. 3 that in the shell bottom 7.3 in the shell 7, the suction opening 10 is assembled near the yarn outlet 9. The suction opening 10 is provided between the end face of the cooling body 1 and the exit yarn guide 9.1. The suction opening 10 is coupled to a suction facility by a suction line 13 (not shown in detail here).

There is an air opening 12 in the area of the inlet passage opposite the side wall 7.2 of the housing. The air openings 12 are arranged in a region between the inlet yarn guide 8.1 and the end face of the cooling body 1. The air opening 12 opens into the environment of the housing 7.

The metering facility 6 provided outside the housing 7 ensures the supply of the cooling liquid. For this purpose, the metering facility 6 has a metering component 6.1, such as a metering pump, and a container 6.2 filled with a cooling liquid. The metering member 6.1 is connected to the metering duct 4.1 of the cooling body 1 with a fluid line 5. For this purpose, the fluid connector with which the fluid line 5 is connected to the metering duct 4.1 can be assembled in the housing bottom 7.3, for example.

During operation, the metering facility 6 continuously delivers a predetermined amount of cooling liquid to the cooling body 1, wherein a metering opening 4 used in the bottom 3 of the cooling tank 2 supplies a metered amount of the cooling liquid. In order to cool the hot yarn, the threading slot hole 11 is used to initially guide the yarn at the beginning of the process into the inside of the casing 7, and then is placed into the inlet yarn guide 8.1, the cooling groove 2 and the outlet yarn guide 9.1. The yarn passes through the cooling groove 2 which is in contact with the groove bottom 3. The yarn is wetted and cooled by the cooling liquid. The steam occurring here accumulates in the housing 7 and is discharged through the suction opening 10. The air opening 12 is used to guide the continuously flowing fresh air into the interior of the housing 7. An air flow is established in which the running direction of the yarn is uniform and promotes the discharge of steam above the cooling tank 2. In addition, the airflow on the yarn exit side is used to suck out the cooling liquid from the yarn loosely attached between the cooling body 1 and the exit guide 9.1 to the portion where the yarn can be easily guided. Therefore, any residual cooling liquid can be prevented from flowing out of the casing 7. Similarly, the lateral arrangement of the casing 7 with the threading slot 11 can avoid de-gassing caused by thermal factors. The environment of the housing 7 is therefore still substantially free of steam and any residual cooling liquid.

The device according to the invention for cooling yarns is therefore particularly suitable for use on weaving machines with many processing positions. Therefore, many such devices can be used in a weaving machine. Although the cooling yarn is reinforced with a cooling liquid, the environment of the weaving machine is not stressed. Setting the yarn can be performed quickly and easily by an operator, thanks to the threaded slots in the housing.

In the case of the exemplary embodiments of FIGS. 1 to 4, the configuration of the cooling body 1 is exemplary in terms of construction. Therefore, the heat sink can be configured with or without a pocket in the bottom of the tank. In addition, a plurality of sequentially arranged cooling bodies can also be provided which are encapsulated in the casing together. It is important here that the environment of the cooling body is enclosed by the casing, and that the casing has threading slots for threading.

1‧‧‧ elongated cooling body

2‧‧‧ cooling tank

3‧‧‧ curved groove bottom

3.1‧‧‧Slot bag

3.2‧‧‧web

4‧‧‧ metering opening

4.1‧‧‧ metering catheter

5‧‧‧ fluid pipeline

6‧‧‧ metering facilities

6.1‧‧‧Measuring component

6.2‧‧‧container

7‧‧‧ long shell

7.1, 7.2‧‧‧ side wall

7.3‧‧‧shell bottom

7.4‧‧‧shell cover

7.5, 7.6‧‧‧shell end wall

8‧‧‧ Yarn entrance

8.1‧‧‧Inlet yarn guide

9‧‧‧ yarn export

9.1‧‧‧Export Yarn Guide

10‧‧‧ Suction opening

11‧‧‧Threading slot

12‧‧‧ air opening

13‧‧‧Suction line

In the drawings: FIG. 1 is a schematic side view of an exemplary embodiment of the device of the present invention; FIG. 2 is a front view of the exemplary embodiment of FIG. 1; FIG. 3 is a schematic view of the exemplary embodiment of FIG. Vertical sectional view; FIG. 4 is a schematic cross-sectional view of the exemplary embodiment of FIG. 1.

Claims (9)

A device for cooling a hot yarn having a cooling body having an elongated cooling groove for guiding the yarn, wherein the cooling groove is connected to a supply opening for a metering opening in a groove bottom. A metering facility for cooling liquid, characterized in that the cooling body is encapsulated in a casing, and that the casing has a threading slot for introducing the yarn, and the threading slot is in the casing. A yarn inlet and a yarn outlet extend. The device according to claim 1, characterized in that the threading slot hole group is arranged on a side wall of a casing above the cooling slot of the cooling body. The device according to claim 2, characterized in that the cooling groove has an arc-shaped groove bottom, and that the threading groove hole between the yarn inlet and the yarn outlet is at least partially equal to the groove bottom One curvature. The device according to any one of claims 1 to 3, characterized in that: in the housing, the yarn inlet is provided with an inlet yarn guide, and the yarn outlet is provided with an outlet yarn guide, and the: The heat sink extends between the yarn guides. The device according to any one of claims 1 to 4, characterized in that: in the casing, near the yarn outlet, a suction opening that can be connected to a suction facility is assembled on the casing. The device according to claim 5, characterized in that the suction opening is arranged in a shell bottom between the cooling body and the yarn outlet. The device according to claim 6, characterized in that: in the casing, near the yarn inlet, an air opening to an environment is assembled on the casing. The device according to any one of claims 1 to 7, characterized in that the metering facility is provided outside the casing and is connected to the cooling body in the interior of the casing by a fluid line. The device according to claim 8, characterized in that the cooling groove in a part of the groove bottom has a plurality of recessed groove bags, and each of the recessed groove bags is used in one of the groove bottoms to guide the webs apart from each other, wherein The metering opening is assembled in an upstream portion of the bottom of the tank.