Temperature control device for heating synthetic yarn and textured processing device for textured yarn
The temperature control device addresses the issue of non-uniform heating in yarn texturing by using a heat transfer shaft and support elements to achieve precise curvature and uniform heating, enhancing yarn quality and reducing variations.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- OERLIKON TEXTILE GMBH & CO KG
- Filing Date
- 2025-11-20
- Publication Date
- 2026-06-02
AI Technical Summary
Existing temperature adjustment devices for heating synthetic yarn in texturing devices fail to achieve precise and uniform heating, leading to variations in yarn properties and quality, particularly affecting dyeing consistency.
A temperature control device with a heat transfer shaft, heat transfer medium, and support elements that define the curvature of the heating tube, allowing precise adjustment and uniform heating of the yarn.
The device ensures high-quality yarn production with minimal property variations by providing efficient and uniform heating, suitable for use in standard texturing machines.
Smart Images
Figure 2026090233000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a temperature adjustment device for heating a synthetic yarn and a texturing device for texturing the yarn.
Background Art
[0002] Such a type of temperature adjustment device for heating a synthetic yarn is preferably used in a fiber machine in order to heat the yarn to a pre-defined temperature. Thus, in a texturing device for texturing a yarn, during texturing, in order to heat a multi-filament yarn with false twists to a predetermined temperature within the glass transition temperature range, it is known to use such a temperature adjustment device within the texturing area of the texturing device. Furthermore, such a temperature adjustment device is used to reduce the internal stress of the yarn. Thereby, for example, a synthetic yarn with extremely little shrinkage can be produced.
[0003] According to German Patent Application Publication No. 102019003801, such a temperature adjustment device is known, in which a guide element, for example a heating capillary tube, as an insert is held in a support tube. The yarn can be guided in the insert or through this heating capillary tube. The support tube is arranged in a heat medium shaft, and thus the support tube can be heated from the outside by a heat medium liquid prepared in the heat medium shaft. The support tube is formed in a heat conduction manner, and thus heats the insert or the heating capillary tube inside the support tube. The yarn is guided while contacting through the heating capillary tube. In this case, the heating capillary tube is configured to be curved. Thereby, a continuous contact of the yarn should be formed.
[0004] However, in this case, the problem arises that the curvature cannot be adjusted with sufficient precision. Consequently, there is variation in the contact pressure between the heated tube and the yarn along the longitudinal axis of the heated tube. Therefore, the yarn cannot be heated in the desired form or with the desired high uniformity, and as a result, the yarn properties of the yarn heated by the temperature control device and / or the yarn textured by the textured processing device located above it do not have the desired high quality, and in particular the yarn properties have a higher variation than desired or required. In particular, there may be variation in the dyeing of the yarn. [Overview of the Initiative] [Problems that the invention aims to solve]
[0005] Therefore, the fundamental problem of the present invention is to provide a temperature control device for heating synthetic yarn and a textured processing device for textured yarn that reduce or eliminate the problems of the prior art. In particular, it is desirable that the heating of the yarn be particularly efficient and / or uniform. [Means for solving the problem]
[0006] This problem is solved by the temperature control device described in claim 1, that is, a temperature control device for heating synthetic yarn, which has at least one heat transfer shaft, a heat transfer medium prepared in the heat transfer shaft, a tube for guiding synthetic yarn arranged in the heat transfer shaft so that the tube can be heated to a predetermined temperature by the heat transfer medium, a support element formed between the wall of the heat transfer shaft and the wall of the tube, and the support element defines the curvature of the tube in the longitudinal direction and along the longitudinal direction of the tube.
[0007] The support element allows for extremely precise adjustment of the tube curvature. The value of the tube curvature is precisely known at all points along the tube, especially in the longitudinal direction, and therefore the tube design can be specified with extreme precision. In this case, the yarn can be heated in the desired form and with the desired high uniformity, so that the yarn properties of the yarn heated by the temperature control device are ultimately of the desired high quality, with particularly little variation in yarn properties, and therefore within the desired narrow tolerance.
[0008] The walls of the heat transfer shaft are preferably formed from rectangular tubular profiles with rounded corners. Therefore, in cross-section, the outer and inner surfaces of the heat transfer shaft walls are substantially rectangular. For example, Diphyl is used as the heat transfer medium.
[0009] Advantageously, the pipe curvature has a radius of 20m, in particular, with a radius of 15m to 25m.
[0010] Therefore, it can be easily used in the textured processing area of a standard textured processing machine. In particular, the pipe curvature forms an arc along the longitudinal direction of the pipe. Other curvatures of the pipe can also be considered.
[0011] More preferably, the tube has a contact length with the thread of 1.3m to 2.5m, particularly 2.0m.
[0012] Such a contact length is sufficient to heat the thread to the desired temperature. In this case, the temperature of the heat transfer medium, the characteristics of the thread, such as its diameter, as well as the thread speed and, consequently, the contact time between the thread and the tube, are particularly important.
[0013] According to an advantageous embodiment of the temperature control device, the heat transfer medium shaft has first and second portions adjacent to each other in a V-shape in the longitudinal direction.
[0014] Each section is formed by preferably rectangular tubular profiles, preferably with rounded corners. The two rectangular tubular profiles are joined to each other, for example, by welding, forming a V-shape. This joint is liquid-tight, so there is no risk of the heat transfer fluid leaking from the heat transfer shaft at the joint. The two sections transition to each other while forming a predetermined angle in the longitudinal direction, this angle being formed particularly between the two mutually facing outer surfaces of the two sections. The walls of both sections, in particular, provided to form each section, are preferably formed linearly in the longitudinal direction and not curved. The V-shape is adapted to the curvature of the pipe, in which case predetermined maximum and minimum spacings are achieved between the pipe wall and the heat transfer shaft wall when viewed in the radial direction of the pipe. Thus, the volume of the heat transfer shaft is advantageously limited to a lower value, in particular compared to a heat transfer shaft having only one section formed by walls made only of straight, uncurved rectangular tubular profiles. The walls of the heat transfer shaft can be easily formed despite the reduced volume of the heat transfer shaft.
[0015] According to another preferred embodiment of the temperature control device, the tube curvature is formed such that a constant compression pressure of the thread against the tube can be generated along the longitudinal axis of the tube.
[0016] By applying a constant compression pressure, the yarn can be heated particularly uniformly and efficiently. Therefore, it is possible to manufacture particularly expensive yarns with less variation in yarn properties. The contact between the yarn and the tube is formed on the inner circumferential surface of the tube, and this formed contact surface is located in the region of the inner circumferential surface of the tube, particularly facing the center point of each curvature.
[0017] Preferably, the longitudinal surface of the support element that is coupled to the wall of the pipe is formed to be curved in proportion to the predetermined pipe curvature. Preferably, the longitudinal surface of the support element that is coupled to the wall of the heat transfer medium shaft is formed to be straight.
[0018] The support element preferably has a substantially constant thickness, where "substantially" means that the thickness may deviate by up to 10% from a constant value. The support element has an extension length significantly greater in the longitudinal direction and / or in the transverse direction relative to the longitudinal direction when viewed from the wall of the heat transfer medium shaft toward the tube than in the thickness direction. The joints between the support element and the wall of the heat transfer medium shaft, and between the support element and the wall of the tube, are formed, for example, as welded joints. Other forms of joints are also possible. In particular, the joint between the support element and the wall of the heat transfer medium shaft and the joint between the support element and the wall of the tube may be of different forms.
[0019] More preferably, one support element is formed between the wall of each section of the heat transfer shaft and the wall of the tube.
[0020] Therefore, the support elements are particularly easy to construct. Specifically, two support elements of the same structure are formed between the wall of the heat transfer fluid shaft and the wall of the tube, one in front of the other in the longitudinal direction of the tube. These two support elements have an angle with respect to each other that corresponds to the angle between the two opposing outer surfaces of the two sections of the heat transfer fluid shaft.
[0021] It may be advantageous if, within the heat transfer shaft, two tubes, each for guiding a single thread, are arranged substantially parallel to each other.
[0022] "Substantially parallel" means that the two tubes may be deviated from this parallel arrangement by up to 5°. By placing these two tubes in the same heat transfer shaft, the equipment-technical cost for heating the two threads can be significantly reduced, especially compared to placing each tube in a separate heat transfer shaft. Furthermore, the energy consumption per thread is reduced by heating the two threads in the same heat transfer shaft.
[0023] Advantageously, the two tubes arranged substantially parallel to each other are each connected, in particular in both sub-sections of the heat medium shaft, to one common collective support element of U-shaped cross-section which forms the two support elements of these two tubes.
[0024] Thus, the cost of the device technology is further reduced. Such a U-shaped support element can be manufactured simply and at low cost. Furthermore, the collective support element simplifies the assembly of the temperature control device. Each leg of the collective support element forms, in this case, one support element for one of the two tubes. In particular, the bottom region of the collective support element connecting the two legs is connected to the wall of the heat medium shaft, for example by means of a screw connection.
[0025] The problem underlying the invention is also solved by a texturing device for texturing the yarn according to claim 10.
[0026] More specifically, in this case, the problem is solved by a texturing device for texturing the yarn, which comprises a twist stop device, the temperature control device described above, a yarn cooling device, and a false twist texturing assembly, which are arranged in this order and form a yarn path.
[0027] Thus, the yarn can be heated in the desired form and with the desired high degree of uniformity, so that ultimately the yarn properties of the yarn heated by the temperature control device and the yarn textured by the texturing device arranged upstream are of high quality as desired, in particular the properties have a very low variation and are thus within the desired narrow tolerance.
[0028] The twisting stop device, temperature adjustment device, yarn cooling device, and false twist texture card processing assembly form the texture card processing area of the texture card processing device. During operation, the false twist texture card processing assembly can apply a false twist to the yarn that extends to the twisting stop device in the direction opposite to the yarn running direction. The twisting stop device can prevent further twisting of the yarn in the yarn running direction upstream of the twisting stop device. The structure of the yarn can be changed by the higher yarn temperature present here, particularly in the area of the temperature adjustment device, based on applying the false twist, and in this case, this changed structure can be fixed by the subsequent cooling of the yarn in the yarn cooling device.
[0029] Preferred embodiments will be described in detail below with reference to the accompanying drawings.
Brief Description of the Drawings
[0030] [Figure 1] It is a side view schematically showing a partial cross-section of an embodiment of a temperature adjustment device for heating a synthetic yarn. [Figure 2] It is a view schematically showing a cross-section of the embodiment of the temperature adjustment device for heating the synthetic yarn of FIG. 1 along line A-A. [Figure 3] It is a side view schematically showing separately the support element of the temperature adjustment device of FIG. 1. [Figure 4] It is a side view schematically showing an embodiment of a texture card processing device for texture card processing of yarn by the temperature adjustment device shown in FIGS. 1 and 2.
Modes for Carrying Out the Invention
[0031] The temperature control device 1 for heating the synthetic yarn 2, shown in Figures 1 and 2, has at least one heat transfer shaft 3. A heat transfer medium 4 is prepared inside the heat transfer shaft 3, and a tube 5 for guiding the synthetic yarn 2 is placed inside the heat transfer shaft 3, so that the tube 5 can be heated to a predetermined temperature by the heat transfer medium 4. A support element 6 is formed between the wall 3.W of the heat transfer shaft 3 and the wall 5.W of the tube 5. The support element 6 defines the curvature of the tube 5 in the longitudinal direction and along the longitudinal direction of the tube 5.
[0032] The pipe 5 may be formed with a double wall, in which case the inner pipe is housed within the outer pipe, and substantially full contact is formed between the inner and outer pipes. The wall 3.W of the heat transfer shaft 3 is formed by a rectangular tubular profile with rounded corners, according to Figures 1 and 2. Other shapes of the wall of the heat transfer shaft are also possible; for example, a circular tubular profile may be provided with respect to the wall of the heat transfer shaft.
[0033] The heat transfer shaft 3 is formed as a type of heat tube, also known as a heat pipe. Within such a heat tube, the heat transfer fluid 4 exists in a liquid state in part and a gaseous state in another part. When the heat transfer shaft 3 is formed as a heat tube, the heat transfer shaft 3 is connected to an evaporator for the evaporation of the heat transfer fluid 4. In this case, the gaseous heat transfer fluid 4 can be condensed in the tube 5 to heat the tube. During operation, the heat transfer fluid 4 can be supplied to the heat transfer shaft 3 at an elevated temperature, and after heating the tube 5, it can be discharged again from the heat transfer shaft 3 at a correspondingly lower temperature. Heating and / or evaporation of the heat transfer fluid 4 within the heat transfer shaft 3 itself is also possible.
[0034] The pipe curvature has a radius R in the range of substantially 15m to 25m, particularly 20m. The radius R has a constant value along the longitudinal axis of pipe 5. However, the radius may have a value that varies along the longitudinal axis of pipe.
[0035] The tube 5 has a contact length with the yarn 2 of 1.3 m to 2.5 m, particularly 2.0 m. The tube 5 may also have a contact length with the yarn 2 of approximately 1.5 m. The contact length with the yarn 2 preferably extends from a first end face of the tube 5 to a second end face of the tube 5 located on the opposite side. In Figure 1, the tube 5 protrudes from the heat transfer medium shaft 3 at both ends. In this case, the contact length with the yarn 2 extends at least across a portion of the tube 5 positioned within the heat transfer medium shaft 3. The time from which the yarn 2 contacts the tube 5 during the operation of the temperature control device 1 is determined or realized, for example, by the positions of the inlet yarn guide and outlet yarn guide located within or adjacent to the mutually opposing end regions of the tube 5.
[0036] The heat transfer shaft 3 has first and second subdivisions 3.1 and 3.2 adjacent to each other in a V-shape along its longitudinal direction. The walls 3.W for forming the first and second subdivisions 3.1 and 3.2 are manufactured from rectangular tubular profiles, for example, by cutting from the same tubular profile or from a tubular profile of the same structure. Thus, the walls 3.W of the heat transfer shaft 3 have two rectangular profiles, the opposite end faces of these profiles are beveled and in contact with each other around their entire circumference, thereby achieving a fluid-tight coupling between the two rectangular profiles.
[0037] The tube curvature is formed along the longitudinal axis of the tube so as to generate a constant compression pressure of the thread 2 against the tube 5. The tube 5 has a contact surface for the thread 2 formed on its inner wall, and this contact surface is separated from the support element 6 only by the wall 5.W of the tube 5. The compression pressure acts between the thread 2 and the contact surface of the tube 5 when the temperature control device 1 is in operation.
[0038] In particular, as shown in Figure 3, the longitudinal surface 6.L5 of the support element 6 that is coupled to the wall 5.W of the pipe 5 is formed to be curved in proportion to the predetermined pipe curvature, while the longitudinal surface 6.L3 of the support element 6 that is coupled to the wall 3.W of the heat transfer shaft 3 is formed to be straight. The pipe 5 is in contact with the support element 6 along the entire longitudinal surface 6.L5 of the support element. The support element 6 is coupled to the wall 3.W of the heat transfer shaft 3 in the flat region of the wall 3.W.
[0039] As shown in Figure 1, one support element 6.1.1, 6.2.1 is formed between the walls 3.W of each subsection 3.1, 3.2 of the heat transfer shaft 3 and the wall 5.W of the pipe 5. The two support elements 6.1.1, 6.2.1 are positioned one behind the other in the direction of thread travel or in the longitudinal direction, as symbolically indicated by the arrows. A gap is formed between the two support elements 6.1.1, 6.2.1. The boundary between the first subsection 3.1 and the second subsection 3.2 of the heat transfer shaft 3 lies within the free space formed by this gap between the two support elements 6.1.1, 6.2.1.
[0040] Within the heat transfer shaft 3, two tubes 5.1 and 5.2 are arranged substantially parallel to each other, each for guiding a single thread 2. Both tubes 5.1 and 5.2 are formed of the same structure. The tubes 5.1 and 5.2 are spaced substantially constant apart from each other along the longitudinal direction of the tubes. However, it is also conceivable that only one tube is arranged within the heat transfer shaft.
[0041] The two tubes 5.1 and 5.2, which are substantially parallel to each other, are coupled to a single common U-shaped collective support element 7 that forms the two support elements 6.1.1 and 6.1.2 and 6.2.1 and 6.2.2 of these two tubes 5.1 and 5.2, particularly in each of the two subdivisions 3.1 and 3.2 of the heat transfer shaft 3. In total, there are four support elements 6.1.1, 6.1.2, 6.2.1, and 6.2.2, in which case each of the two support elements, namely support elements 6.1.1 and 6.1.2 and support elements 6.2.1 and 6.2.2, is formed by one common collective support element 7, and therefore there are two collective support elements 7 in total. One support element 6.1.1 is formed between the wall 3.W of the heat transfer shaft 3 in the first subdivision 3.1 and the wall 5.W of the first tube 5.1. Another support element 6.2.1 is formed between the wall 3.W of the heat transfer medium shaft 3 in the second sub-section 3.2 and the wall 5.W of the first pipe 5.1. Another support element 6.1.2 is formed between the wall 3.W of the heat transfer medium shaft 3 in the first sub-section 3.1 and the wall 5.W of the second pipe 5.2. Another support element 6.2.2 is formed between the wall 3.W of the heat transfer medium shaft 3 in the second sub-section 3.2 and the wall 5.W of the second pipe 5.2. Each aggregate support element 7 is formed, for example, as a bent metal sheet.
[0042] Figure 4 shows a textured yarn processing apparatus 8 for textured yarn 2, which comprises a twist-stopping device 9, a temperature control device 1 shown in Figures 1 and 2, a yarn cooling device 10, and a false-twist textured yarn assembly 11, which are arranged in the above order to form the yarn path. The twist-stopping device 9 can also act as an inlet yarn guide for the temperature control device 1.
[0043] In particular, two threads 2 can be processed in parallel by the textured processing device 8, and both threads 2 can be heated in both tubes 5.1 and 5.2 by the same temperature control device 1. Preferably, a separate de-twisting device 9 and false-twist textured processing assembly 11 are provided for each thread 2. A separate thread cooling device 10 may be provided for each thread 2, or both threads 2 may be cooled by one common thread cooling device 10.
[0044] The textured processing apparatus 8 may also have a plurality of temperature control devices 1, as shown in Figures 1 and 2, each having two tubes 5.1, 5.2, in which case, preferably, a common fluid system of heat transfer medium 4 is provided for the plurality of temperature control devices 1, and the heat transfer medium 4 heated and / or evaporated by only one energy supply unit of the fluid system can be provided for the plurality of temperature control devices 1. [Explanation of Symbols]
[0045] 1 Temperature adjustment device 2 threads 3 Heat transfer shaft 3.1 First partial section of the heat transfer shaft 3 3.2 Second subdivision of the heat transfer shaft 3 3.W Heat transfer fluid shaft 3 wall 4 Heat medium 5 tubes 5.1 The first tube 5.2 Second tube 5.W pipe 5 wall 6 Support elements 6.1.1 Support elements for the first sub-section 3.1 and the first tube 5.1 6.2.1 Support elements for the second sub-section 3.2 and the first tube 5.1 6.1.2 Support elements for the first sub-section 3.1 and the second tube 5.2 6.2.2 Support elements for the second sub-section 3.2 and the second tube 5.2 6.L3 Longitudinal surface of support element 6 for coupling to wall 3.W of heat transfer shaft 3 6.L5 Longitudinal surface of support element 6 for bonding to the wall 5.W of pipe 5 7. Collective support element 8 Textured Processing Equipment 9. Anti-twist device 10. Thread cooling device 11 False-twisted textured assembly Radius of pipe curvature of pipe R 5
Claims
1. A temperature control device (1) for heating a synthetic yarn (2), comprising: at least one heat transfer shaft (3); a heat transfer medium (4) prepared in the heat transfer shaft (3); a tube (5) for guiding the synthetic yarn (2) arranged in the heat transfer shaft (3); the tube (5) being heated to a predetermined temperature by the heat transfer medium (4); a support element (6) formed between the wall (3.W) of the heat transfer shaft (3) and the wall (5.W) of the tube (5); and the support element (6) defining the curvature of the tube (5) in the longitudinal direction and along the longitudinal direction of the tube (5).
2. The temperature control device (1) according to claim 1, characterized in that the pipe curvature has a radius (R) in the range of substantially 15 m to 25 m, particularly 20 m.
3. The temperature control device (1) according to at least one of claim 1 or 2, characterized in that the tube (5) has a contact length with the thread (2) of 1.3 m to 2.5 m, particularly 2.0 m.
4. The temperature control device (1) according to at least one of claims 1 to 3, characterized in that the heat transfer shaft (3) has a first partial section (3.1) and a second partial section (3.2) adjacent to each other in a V-shape in the longitudinal direction.
5. The temperature control device (1) according to at least one of claims 1 to 4, characterized in that the curvature of the tube is formed along the longitudinal axis of the tube so as to generate a constant compression pressure of the thread (2) on the tube (5).
6. The temperature control device (1) according to at least one of claims 1 to 5, characterized in that the longitudinal surface (6.L5) of the support element (6) that is coupled to the wall (5.W) of the pipe (5) is formed to be curved in proportion to a predetermined pipe curvature, and the longitudinal surface (6.L3) of the support element (6) that is coupled to the wall (3.W) of the heat transfer medium shaft (3) is formed to be straight.
7. A temperature control device (1) according to at least one of claims 4 to 6, characterized in that one support element (6.1.1, 6.2.1) is formed between the wall (3.W) of each portion (3.1, 3.2) of the heat transfer medium shaft (3) and the wall (5.W) of the pipe (5).
8. A temperature control device (1) according to at least one of claims 1 to 7, characterized in that two tubes (5.1, 5.2) for guiding one thread (2) each are arranged substantially parallel to each other within the heat transfer medium shaft (3).
9. The temperature control device (1) according to claim 8, characterized in that both tubes (5.1, 5.2) arranged substantially parallel to each other are coupled to one common collective support element (7) with a U-shaped cross-section that forms both support elements (6.1.1 and 6.1.2 and 6.2.1 and 6.2.2) of both tubes (5.1, 5.2) in each of the two subdivisions (3.1, 3.2) of the heat transfer shaft (3).
10. A textured processing apparatus (8) for textured yarn (2), wherein the textured processing apparatus comprises a twist-stopping device (9), a temperature control device (1) according to at least one of claims 1 to 9, a yarn cooling device (10), and a false-twist textured processing assembly (11), wherein the twist-stopping device, the temperature control device, the yarn cooling device, and the false-twist textured processing assembly are arranged in the order described to form a yarn path.