CN102203333B - Heating device - Google Patents

Abstract

This invention relates to a heating device for yarn, particularly for use in a crimping and texturing machine, having multiple elongated heating channels divided into two heating groups. The yarn is heated through the heating channels of one group in the crimping and texturing section, and then heated through the heating channels of a second group in the subsequent relaxation section. To achieve a compact and energy-efficient arrangement of the heating channels, the invention maintains a concentric cross-sectional arrangement such that the first heating group of the heating channels is located in the central region, while the second heating group is located in the edge region surrounding the central region.

Description

heating equipment

technical field

The invention relates to a heating device for yarn, in particular in a texturing machine, and to a texturing machine.

Background technique

It is known in the manufacture of synthetic textile threads that, after melt spinning, the synthetic yarns are treated by a texturing process in order to obtain the desired structure for textile applications. In particular, multi-fiber yarns are texturized, stretched and relaxed here. To carry out this treatment phase, it is known to subject the yarn to a first heat treatment in the texturing section and to subject it to a second heat treatment in the relaxation section. For this purpose, a plurality of individual heating devices are usually used, which are arranged one behind the other in the yarn flow.

In order to be able to carry out such a heat treatment as energy-efficient as possible during the texturing process, heating devices with two separate heating groups formed by elongated heating channels are known from the prior art.

For example, DE 1760923 discloses a heating device which is arranged on the axis of symmetry of two crimping machines arranged mirror-symmetrically to one another. Three heating groups of heating channels arranged next to each other in rows are arranged inside the heating device. The heating channels arranged next to each other in the central row are assigned to the processing stations of the two texturing machines for heating the yarn drawn off from the yarn supply bobbin in the texturing section. The outer heating groups within the heating device are each assigned to only one texturing machine, wherein the heating channels each form a relaxation section after the texturized yarn.

The known heating device is therefore suitable only for the heat treatment of yarns in the plane of symmetry of the two texturing machines. The heating here extends substantially over the entire length of the machine, which requires a great deal of outlay on thermal insulation.

A heating device is known from DE 26 19 998, in which a total of four heating groups consisting of heating channels arranged side by side in a row are provided, which are arranged in a common housing. The heating groups are arranged here symmetrically with respect to the axis of symmetry of the two texturing machines, so that a machine configuration is formed. In this case too, the individual heating channels are arranged in rows next to each other and extend substantially over the entire width of the machine. It is required here to insulate the heating channels over the entire width of the machine.

However, heating devices are also known in the prior art which consist of two spatially separated heating groups. Known from EP 0 039 938 A1 is a texturing machine which has two separate heating devices in order to heat treat the yarn. Each heating device has a separate heating group of heating channels, wherein the heating channels in the first heating device are arranged in bundles within the crimping section. This enables a compact arrangement of the inner heating channels within the heating device, but also has the disadvantage that separate heating devices are required for the crimping section and the relaxation section.

Contents of the invention

The object of the present invention is to provide a heating device of the mentioned type in which a plurality of heating groups of heating channels are held in an energy-saving arrangement.

A further object of the present invention is to equip a known type of texturing machine with a heating device which achieves a structurally independent configuration of adjacent texturing machines with a compact arrangement of heating groups consisting of heating channels. High flexibility in component placement.

This object is achieved according to the invention by a heating device which has a plurality of elongated heating channels which are divided into two heating groups, wherein the adjacently arranged heating channels of the first heating group The yarn is heated inside the relaxation section, while the heating channels arranged next to each other of the second heating group heat the yarn inside the crimping section, characterized in that the heating channels are kept in a concentric cross-sectional arrangement such that the heating channels The first heating group of the heating channel is arranged in the middle region, and the second heating group of the heating channel is arranged in the edge region surrounding the middle region.

This object is also achieved by a texturing machine which has a plurality of processing stations and a heating device assigned to these processing stations, characterized in that the heating device is designed according to the invention heating device.

The advantage of the invention is that the heating channels of the individual heating groups can be kept in a particularly compact arrangement in such a way that the thermal insulation acting outwards can be minimized. For this purpose, the heating channels are held in a concentric cross-sectional arrangement in such a way that a first heating group of heating channels is arranged in the central region and a second heating group of heating channels is arranged in the edge region, A second heating group surrounds the intermediate region. This results in a nested arrangement of heating groups. The concentric cross-sectional arrangement of the heating channels offers the possibility of merging several yarns in confined spaces both in the texturing section of the texturing machine and in the relaxation section of the texturing machine heat treatment. The expenditure for insulation and heating means can thus be reduced to a minimum.

In one arrangement, the heating channels of one heating group or of two heating groups are held next to each other in a circular arrangement, which has proven to be particularly advantageous for space utilization. This enables the yarn to be fed to the heating device from all sides. The heating device according to the invention is therefore particularly suitable for the heat treatment of yarns in the center of texturing machines.

In order to carry out different heat treatments in the heating groups of the heating device, the following development of the invention is preferably used, wherein a plurality of individually controllable heating means is provided, and at least one heating means is assigned to each heating group consisting of heating channels .

Electric heating elements or heating circuits of the heat transfer medium or combinations of these heating means are preferably used as heating means.

In order to be able to form as many treatment groups as possible with a large number of yarns to be treated simultaneously, such a development of the invention is particularly advantageous in that a plurality of heating channels are formed inside a heating group. Sub-heating groups, and assign a heating mechanism to each sub-heating group composed of heating channels. This enables a high degree of flexibility when carrying out the heat treatment. In this way a heating subgroup composed of heating channels can be heated independently of adjacent heating subgroups.

Depending on the heat treatment requirements, the heating channels of the individual heating groups can be formed by individual heating tubes or by individual heating channels, wherein one or more covers are assigned to the heating channels.

According to an advantageous development, the heating group with the heating groove is preferably formed in the edge region of the heating device, so that the yarn can be introduced from the outside into the open heating groove. Thus even large quantities of yarn can be inserted into the individual heating channels of the external heating group with simple handling.

A heating channel configured as a heating tube can preferably be provided with a guide tube both on the inlet side and on the outlet side, so that an injector can be used for threading the yarn, which injector generates a suction flow acting at the inlet.

In order to avoid mutual influence of the individual heating groups, a plurality of thermal insulation elements are arranged between the heating elements of the heating channel. This ensures that the yarns can be treated in different temperature ranges in the heating group.

The texturing machine according to the invention is particularly distinguished in that it requires significantly less space than conventional texturing machines.

In order to make full use of the space, the godet roller conveying mechanism at each processing position is preferably arranged symmetrically with respect to the heating device. This advantageously enables a uniform draw length when drawing the yarn in the processing position.

A particularly advantageous arrangement can be realized inside the texturing machine in that the godet conveyor is arranged in the processing position in such a way that the heating channel of the edge region of the heating device is located inside the texturing section, while the heating channel of the heating device The heating channel in the middle zone is located inside the relaxation section.

的布置形式并排地保持。For this purpose, the heating device is advantageously oriented vertically, wherein a plurality of deformation units are spaced apart from the heating device in a part-circle/graded circle

The arrangement forms are maintained side by side.

In order to achieve simple and rapid operability of all processing stations when there are a large number of processing stations, according to an advantageous development of the texturing machine according to the invention, the processing stations are divided into several processing groups, wherein each processing station The group is equipped with a sub-group of heating channels consisting of heating channels. Therefore, it is possible to form a machine module consisting of sub-heating groups consisting of heating channels, feeding mechanisms and crimping and deformation units of the processing group, and each machine module can be controlled independently of each other.

The texturing machine according to the invention is distinguished by a very compact and energy-efficient machine design, which can be used both for automatic and semi-automatic texturing machines.

Description of drawings

The heating device according to the invention and the texturing machine according to the invention will be described in detail below by means of several embodiments with reference to the accompanying drawings. in:

Figure 1 shows a schematic longitudinal sectional view of a first embodiment of a heating device according to the invention;

FIG. 2 shows a schematic transverse sectional view of an embodiment of the heating device according to the invention of FIG. 1;

Figure 3 shows a schematic transverse cross-sectional view of another embodiment of a heating device according to the invention;

Figure 4 shows a schematic top view of an embodiment of a texturing machine according to the invention;

FIG. 5 shows a schematic transverse cross-sectional view of the processing position of the embodiment of the texturing machine in FIG. 4 .

Detailed ways

FIG. 1 shows a schematic longitudinal sectional view of a first embodiment of a heating device according to the invention, while FIG. 2 shows a transverse sectional view. If there is no explicit reference to one of the figures, the following description applies to both figures.

The heating device has a plurality of heated heating channels 2.1 and 3.1. The heating channels 2.1 and 3.1 are divided into two heating groups 2 and 3 . The heating channels 2.1 of the heating group 2 are formed in the edge region 5 of the heating device. The individual heating channels 3 . 1 of the heating group 3 are arranged in the central region 4 , they are located concentrically in the center of the edge region 5 and are surrounded by the edge region 5 . The heating channels 2.1 of the heating group 2 are arranged concentrically with the heating channels 3.1 of the heating group 3 and surround them. In this exemplary embodiment, the heating group 2 consists of a total of five heating channels 2 . The second heating group 3 likewise comprises a total of five heating channels 3 . 1 , which are arranged centrally in the central region 5 of the heating device.

The heating channels 3 . 1 of the heating group 3 are formed in this exemplary embodiment by heating tubes 14 which are each surrounded by a heating jacket 7 . The heating tube 14 is open at each end and forms a yarn inlet and a yarn outlet respectively. The heating housings 7 each assigned to the heating tubes 14 are hollow-cylindrical and contain a heat transfer medium which is supplied to the heating housings 7 via an external heating circuit 8 . The heating circuit 8 is associated with a heating circuit control 9 in order to be able to adjust to the desired treatment temperature in the heating tubes 14 . The heating tube 14 and the heating housing 7 are surrounded by a thermal insulation element 13 . 2 and thermally insulated with respect to the edge region 5 . The insulating element 13 . 2 thus forms the intermediate region 4 .

The heating channels 2 . 1 of the heating group 2 are each formed by heating tanks 15 which are each equipped with electrical heating elements 6 in the tank bottom. The heating element 6 of the heating tank 15 is connected to a heating controller 10 , and the heating controller implements temperature control and regulation by means of a matching power supply 16 .

In order to guide the yarn, a guide rail 39 is provided in each case inside the heating grooves 14 , the heating grooves 14 with the guide rails 39 are each covered and insulated from the surroundings by a covering over their entire length.

As shown in FIG. 2 , the cover parts 12 . 1 to 12 . 4 are arc-shaped and can each be removed from the edge region 5 in order to open the heating groove 15 . The edge region 5 is formed by a second thermal insulation element 13.1 in which the heating element 6 and the heating groove 15 are embedded. The heating grooves 15 are open on each end side of the heating device and thus form a yarn inlet and a yarn outlet respectively.

During operation, heating channels 2 . 1 of heating group 2 formed in edge region 4 are heated by associated heating elements 6 and their heating is controlled individually and independently of second heating group 3 by means of heating controller 10 . The heating channels 3 . 1 of the heating group 3 are each heated by an associated heating housing 7 and controlled by a control device 9 of the heating circuit 8 . Different temperature treatments can thus advantageously be carried out on the yarns guided through the heating channels 2.1 and 3.1. Thus, it is preferred to use such a heating device in a texturing machine in order to carry out a first heat treatment on a plurality of yarns in a texturing section and to carry out further heating in a relaxation section arranged downstream.

The number of heating channels in the embodiments shown in FIGS. 1 and 2 is exemplary. A heating device of this type can in principle be expanded so that more than 100 yarns can be heated simultaneously in a heating group. Furthermore, in the exemplary embodiment shown, the number of heating channels in the two heating groups 2 and 3 is the same. In principle, it is also possible to form heating channels for several threads in one heating group. This makes it possible, for example, to provide guide rails for two yarns in one heating tank. It is also possible to configure the heating channels in the two heating groups 2 and 3 with different heating lengths. A further degree of freedom is thus provided in order to be able to carry out different heat treatments on the yarn in the texturing section and in the relaxation section.

In order to achieve simple and energy-efficient handling, especially with large numbers of yarns, the heating channels of a heating group are advantageously divided into sub-heating subgroups, each of which is assigned a separate heating device. To this end, FIG. 3 schematically shows a transverse sectional view of an exemplary embodiment. The basic construction of the exemplary embodiment shown in FIG. 3 is essentially the same as the exemplary embodiment according to FIGS. 1 and 2 , so only the differences are described here, and for the rest refer to the preceding description.

In the exemplary embodiment shown in FIG. 3 , the first heating group 3 comprises a total of nine heating channels 3 . The heating channel 3.1 is embedded in the thermal insulation element 13.2. The thermal insulation element 13.2 is surrounded by the thermal insulation element 13.1 arranged in the edge region 5, in which the heating channel 2.1 of the further heating group is arranged. These heating channels 2 . 1 are formed in the exemplary embodiment by heating baths 15 , which are heated by means of electrical heating elements 6 . The cover for the heating tank 15 is not shown in the heating device shown in FIG. 3 .

The heating channels 2.1 of the heating group 2 are divided into a plurality of partial heating groups 11.1, 11.2 and 11.3. Each sub-heating group 11.1 to 11.3 comprises a total of three heating channels 2.1 which are each heated by means of a heating element 6 . The heating element 6 matching the heating channel 2.1 of the first sub-heating group 11.1 is connected to the first heating controller 10.1. Correspondingly, the heating elements 6 of the sub-heating group 11.2 are controlled by a further heating control unit 10.2, while the heating elements 6 of the third sub-heating group 11.3 are controlled by a further heating control unit 10.3.

In contrast to this, the heating means 7 of the heating group 3 comprising a total of nine heating channels 3 . 1 are controlled via the heating cycle control 9 .

The embodiment of the texturing machine according to the invention shown in FIG. 3 is therefore particularly suitable for forming individual, individually controllable machine modules within the texturing machine, which each include a group of processing stations.

The combination between one heating group and a plurality of sub-heating groups shown in FIG. 3 is exemplary. In principle, the two heating groups can be divided into several partial heating groups. The number of subheating groups is also exemplary here. Furthermore, the number of heating channels contained within the partial heating group is variable.

A first embodiment of the texturing machine according to the invention is shown in FIGS. 4 and 5 , in which the yarn feeding station and the winding device are arranged symmetrically at the same distance from the centrally arranged heating device. FIG. 4 schematically shows a plan view of this embodiment, and FIG. 5 schematically shows a transverse cross-sectional view thereof. The following description applies to both figures as long as there is no explicit reference to one of the figures.

In the shown exemplary embodiment of the texturing machine according to the invention, the central heating device 1 is associated with a total of 12 processing positions 17.1 to 17.12. As shown in FIG. 4 , the heating device 1 is arranged in the adjustment area in the middle of the machine. The treatment devices of the processing stations 17 . 1 to 17 . 12 are each held at a distance from the heating device 1 next to each other in a partial circular arrangement. The heating device 1 forms the center of the machine arrangement. All remaining processing plants are arranged in a star-shaped distribution around the heating device 1 . Treatment devices of the same type, such as texturing devices 22 , each have the same distance from the heating device 1 in the processing positions 17.1 to 17.12 , so that within the processing positions 17.1 to 17.12 a texturing section of the same length results.

The processing stations 17.1 to 17.12 are identical in terms of their structure and the arrangement of the treatment devices. The basic configuration of the processing stations 17.1 to 17.12 will therefore be described below using only one processing station as an example.

FIG. 5 shows a transverse sectional view of two opposing machining positions 17.3 and 17.10. The processing station 17 . 3 has a feed station 18 which is arranged at the greatest distance from the heating device 1 in the outer area of the machine. The feeding station 18 includes a yarn feeding bobbin 29 from which the yarn 21 is withdrawn via a first godet delivery mechanism 20 . To guide the yarn, a yarn end guide 19 is arranged between the first godet transport 20 and the feed station 18 . The first godet roller delivery mechanism 20 is composed of godet rollers and turning guide rollers Composition, wherein the godet roller is driven by the godet roller motor. In order to realize the pulling force required for drawing the yarn 21 from the yarn feeding bobbin 29, the godet roller conveying mechanism 20 is wound by the yarn multiple times.

In the further yarn flow, the yarn 21 is guided towards the yarn inlet 33 . 1 of the heating device 1 . For this purpose the heating device 1 is oriented vertically and has a yarn inlet 33.1 on the underside. The yarn outlet 34.1 is formed on the opposite upper side. The yarn inlet 33.1 and the yarn outlet 34.1 are formed at the ends of the heating channel 2.1. The heating channel 2 . 1 is designed to be heatable within the heating group 2 . In this exemplary embodiment, heating channel 2 . 1 is formed by heating tube 14 , which can be heated, for example, by means of an electrical heating housing. The yarn inlet 33.1 and the yarn outlet 34.1 are respectively assigned an inlet yarn guide 31.1 and an outlet yarn guide 32.1, by means of which the incoming or outgoing yarn 21 is deflected. Above the heating device 1 , the processing station 17 . 3 has a cooling device 23 , a texturing device 22 and a second godet transport 24 . The cooling device 23, the texturing device 22 and the second godet roller conveying mechanism 24 are sequentially arranged to form a linear yarn flow, wherein the texturing device 22 and the inlet yarn guide 31.1 form a texturing section in which the yarn 21 is crimped out of shape.

The second godet conveying mechanism 24, which is also composed of a feed roller and an overspeed roller, is driven at a higher peripheral speed than the first godet conveying mechanism 20, so that the yarn 21 is stretched in the crimping section. In each processing position 17.1 to 17.12, the deformed sections of the thread 21 are formed with the same length.

Inside the processing station 17 . 3 , the yarn 21 is deflected by 180° on the second godet conveyor 24 and led back to the heating device 1 . In the interior of the heating device 1 is formed a second group of treatment channels 3 . 1 , through which the crimped yarn 21 is relaxed. The second heating channel 3.1 of the second heating group 3 has a yarn inlet 33.2 on the upper side of the heating device 1 and a yarn outlet 34.2 on the lower side. The thread 21 thus passes through the heating channels 2.1 and 3.1 in opposite directions. The heating channel 3.1 is likewise formed in this exemplary embodiment by a heating tube 14 which can be heated by a separate heating means, for example a heating housing heated with steam.

For guiding the yarn 21, a third godet transport 30 is arranged below the heating device 1, which is likewise formed by a driven godet and a rotatable deflection guide roller. The speed difference required for the shrinking process is adjusted here between the second godet feed 24 and the third godet feed 30 . The slack section is defined here by the two godet conveyors 24 and 30 . To guide the yarn, the yarn inlet 33.2 and the yarn outlet 34.2 are likewise assigned two yarn guides 31.2 and 32.2. The inlet and outlet yarn guides can be formed by deflection wheels or deflection pins.

In the processing position 17.3, the winding device 25 is arranged downstream of the third godet conveying mechanism 30 . The winding device 25 has a bobbin holder 35 on which the bobbin 27 to be wound is held in a rotatable manner. The mandrel 27 rests with its circumference on the drive roller 26 , by means of which the mandrel 27 is driven at a constant peripheral speed. In the yarn process, a reciprocating mechanism 28 is arranged in front of the drive roller 26, so that the textured yarn 21 is wound into a cross-wound bobbin.

In the exemplary embodiment shown in FIGS. 4 and 5 , the operation for changing the roll is carried out from the inner actuating channel 37 . The operating channel 37 is formed in the intermediate space between the heating device 1 and the winding device 25 of the processing stations 17.1 to 17.12. On the outer side of the machine opposite the winding device 25 , an actuating channel 38 is likewise formed, which is used for conveying the yarn supply bobbins 29 into the feeding station 18 . In the operating positions 17.1 to 17.12, the yarn is deposited starting from the inner operating channel 37 at the start of the process.

As shown in the illustration in FIG. 4 , an access opening 36 is provided between the processing positions 17 . 1 to 17 . 12 , via which access opening 37 connects the inner actuating channel 37 to the outer actuating channel 38 .

The configuration of the processing equipment shown in the embodiments according to FIGS. 4 and 5 is exemplary and only includes the main processing equipment for guiding, drawing and crimping the textured yarn. In principle, the yarn 21 is usually moistened with a finish before the winding device 25 . It is also known to air-jet texturize the yarn before the relaxation treatment and after the crimp texturing. Thus, for example, an air-jet texturing device and a further conveying device can be arranged in the guide section between the second godet conveying device and the yarn inlet of the heating device 1 .

Both the heating device according to the invention and the texturing machine according to the invention are distinguished by the fact that high energy savings can be achieved in the heat treatment of the yarn. In addition, the heating device requires less insulation in order to achieve sufficient thermal insulation from the surrounding environment.

List of reference signs

Claims (14)

1. the heater that is used for yarn, have a plurality of elongated heat tunnels (2.1,3.1), these heat tunnels are divided into two heating groups (2,3), wherein, the heat tunnel that is arranged side by side (3.1) of the first heating group (3) is at the inside of slack strand heating yarn, and the heat tunnel that is arranged side by side (2.1) of the second heating group (2) is at Texturized section inside heating yarn, it is characterized in that, each heat tunnel (2.1,3.1) keep by concentric cross sectional arrangement form like this, the first heating group (3) that is heat tunnel (3.1) is arranged in the zone line (4), and the second heating group (2) of heat tunnel (2.1) is arranged in the fringe region (5) that surrounds described zone line (4).

2. heater according to claim 1 is characterized in that, the heat tunnel (2.1,3.1) of one of them heating group (2,3) or two heating groups (2,3) keeps mutually abreast by circular arrangement form.

3. heater according to claim 1 and 2 is characterized in that, is provided with a plurality of heating arrangements that can control separately (6,7), and each heating group (2,3) of heat tunnel (2.1,3.1) sets at least one heating arrangements (6,7).

4. heater according to claim 3 is characterized in that, heating arrangements by a plurality of electricity heating element heater (6) and/or the one or more heat cycles (7) by heat-carrying agent constitute.

5. heater according to claim 3, it is characterized in that, form a plurality of branch heating groups (11.1,11.2) of heat tunnel (2.1) therein in heating group, each of heat tunnel (2.1) divides heating group (11.1,11.2) to set a described heating arrangements (6).

6. heater according to claim 1 and 2 is characterized in that, each heat tunnel (2.1,3.1) constitutes by heating tube (14) and/or by heating tank (15), and wherein, each heating tank (15) sets one or more coverings (12.1,12.2).

7. heater according to claim 6 is characterized in that, constitutes in each heating tank (15) edge region (4), makes it possible to from the outside yarn be imported the heating tank (15) that opens wide.

8. heater according to claim 1 and 2 is characterized in that, is provided with a plurality of heat insulating elements (13.1,13.2), and these heat insulating elements are arranged between the heating arrangements (6,7) of each heat tunnel (2.1,3.1).

9. the coiling deformation devices that is used for Texturized a plurality of multi-filament yarns, have a plurality of Working positions (17.1-17.12) and a heater that sets to these Working positions (17.1-17.12), it is characterized in that described heater (1) is according to each described formation in the claim 1 to 8.

10. coiling deformation devices according to claim 9 is characterized in that, each Working position (17.1-17.12) has a plurality of godet roller conveying mechanisms (20), and these godet roller conveying mechanisms keep by the arrangement form about heater (1) symmetry.

11. coiling deformation devices according to claim 10, it is characterized in that, each godet roller conveying mechanism (20,24,30) is arranged in the Working position (17.1-17.12) like this, make each heat tunnel (2.1) of fringe region (5) of heater (1) be positioned at Texturized section, and each heat tunnel (3.1) of the zone line (4) of heater (1) is positioned at slack strand.

12. according to each described coiling deformation devices in the claim 9 to 11, it is characterized in that, heater (1) is directed vertically, and a plurality of Texturized equipment (22) keeps side by side with the arrangement form of heater (1) partition distance ground by part circular.

13., it is characterized in that each described Working position is divided into a plurality of processing groups according to each described coiling deformation devices in the claim 9 to 11, and each processes the branch heating group that the heat tunnel of heater is established in assembly.

14. coiling deformation devices according to claim 13, it is characterized in that, the branch heating group that sets to a processing group in a plurality of processing groups of heat tunnel constitutes a machine module with the organization of supply that matches and Texturized equipment, and each machine module can be controlled independently of each other.

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