JPH07501366A - Heating element for running yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Heating element for running yarn The present invention is a heating member for heating a running thermoplastic thread, and the heating member heats a running thermoplastic thread. on the web along the heated surface (heating surface) and at a predetermined distance. and in which the web is placed on a heated surface.

Such a heating member is described in European Patent No. 412429 (IP-1720). It is known from the book. In this case, the curvature of the yarn trajectory is given invariably, Ll, and the force It is a disadvantage to define the distance between the thread and the heated surface L) at the same time. .

Heating elements of the type described above are used, for example, in false twist and crimp machines. Another use is also considered. It will be done.

Heating element for heating running thermoplastic yarn (chemical fiber yarn), false twist crimping machine generally has a long rail, the rail is heated to a predetermined temperature, and The thread is guided.

Patent application published in the Federal Republic of Germany for drafting and heat setting of chemical fiber yarns No. 1303384 describes a heated tube, which is It is surrounded by a steep spiral line and makes a G. tube (circumferential direction at the end of the thread running) Equipped with ridges to prevent movement.

Thermoplastic materials for the threads include in particular polyamides (PA6.PA6.6) and Alternatively, polyethylene terephthalate may be considered, but it is limited to such materials. It never happens.

The object of the present invention is to enable easy assembly and to change the curvature of the yarn running track over a wide range. The hook can be We present a heating device that guarantees a distance between the thread and the surface that is independent of the chosen curvature. It is to provide.

The problem is that the heating surface is curved transversely to the axial direction of the tube (heating tube). The web is formed by ring segments, and the web is formed by ring segments. a component attached to the heating tube and extending over at least a portion of the circumferential direction of the heating tube; A thread guide is provided at the starting end and the terminal end of the heating tube. are offset from each other in the circumferential direction of the heating tube, and the thread is threaded through a thread guide into a steep helix. In line with the outer contour of the ring segment, however, the outer periphery of the heating tube By being guided along the heating tube without contacting the surface Resolved.

Additionally, the improvements of the present invention allow for control of heat transfer for each use case. I want it to be.

In such a heating member, yarn guides provided at the entrance and exit of the yarn running track are used. The helical line of thread running on the ring of the heating tube by adjusting the circumferential direction The gradient of and thus the curvature of the thread running trajectory is chosen. Curvature of the yarn running path is known when heating This has a significant effect on heat transfer in components, whereas this That's not the case. In the present invention, heat transfer mainly depends on the temperature of the heating tube and the temperature on the heating tube. It is related to the height of the ring. Gradient of the helical line, i.e. curvature and winding of the yarn running path The twisting angle is set so that the yarn is stationary and runs stably without affecting heat transfer and is only slightly twisted. In the crimping machine, the twist produced in one system is the length of the yarn exposed to the heating element. It is chosen so that it can be transmitted unhindered within the range.

This also allows a unique adjustment of the yarn temperature. The curvature of the yarn running path causes heat transfer. In addition to the height of the ring, the temperature of the thread is also determined by the heating tube. depends on temperature and length. This length and wrap angle are not related to each other. stomach. The length therefore corresponds to the self-cleaning temperature of the heated surface of the heating tube. , that is to be operated in a temperature range exceeding 300°C.

Yarn guides are arranged on the upstream and downstream sides of each heating tube according to the present invention, Both thread guides are offset from each other in the circumferential direction of the heating tube, so that the thread is It is guided over the heating tube by a turning line. The heating tube is preferably straight.

The heating tube is heated from the inside. This advantageously means that at least By providing an electrical resistance heating device extending over a portion of the length of the heating tube. will be carried out. In this case, heating can be done to intensify the heating in a specific area, e.g. the inlet area. A plurality of individually operable and adjustable resistance heating devices may be provided along the length of the tube. Both are possible. This creates different temperatures along the length of the heating tube. Ru.

The thread runs over the heating tube and the ring at an acute angle to the generatrix of the heating tube. Heat the heating tube Due to the heating temperature above 350'C, a short length of heating tube is sufficient.

This also means that the winding angle of the thread in relation to the circumference and length of the heating tube is also relatively small. It's getting smaller. The wrap angle is advantageously less than 180°. Therefore, heating In any case, the tube has a cylindrical section within the range of the winding angle of the thread. As a cylinder All constructions have the advantage that the yarn has the same feeding parameters and characteristics over the entire contact length. contact the outer surface of the ring with the same helical angle. However, other cylindrical shapes of heating tubes, e.g. For example, an elliptical shape is also possible, and the ring height in the thread running range is constant over the length of the heating tube. Not instant. The range on the opposite side of the heating tube from the thread running can be configured arbitrarily. good. However, the symmetrical shape of the heating tube, especially the cylinder, is advantageous if particular value is placed on uniform heat distribution over the length.

In any case, the ring extends over an area adjacent to the yarn running line of the heating tube. Ru. Therefore, the ring does not need to extend all the way around the heating tube; in this case, called ring segment. The ring extends over the yarn traveling path in the circumferential direction of the heating tube. Good thermal insulation is possible if the In this case, the heating tube may be covered with an insulating layer on the opposite flat side. In this case, the circumferential portion of the ring They can be offset from each other in a spiral line in the direction of yarn running. circumferential direction of ring A certain extent of extension allows the lead of the thread line to be adjusted within the desired range.

As already mentioned, the heating tube according to the invention is particularly advantageous in the self-cleaning range. operated at temperatures within

Such temperatures may be applied to the heating element or web during heat treatment of thermoplastic yarns. It is understood that the temperature is high enough to cause the stuck polymer residue to disintegrate and oxidize. sea bream. In some cases, simple mechanical cleaning may be necessary. automatic cleaner The heating temperature is higher than 300°C for polyester and nylon, up to 800°C. It may be. The temperature limit that causes damage depends on the type of polymer and the thickness of the thread. , or the length of the heating tube, the selected helical line, and the parameters of that pond in the heating process. related to data.

According to the invention, the rings may each be located in the vertical plane of the heating tube.

However, the ring may also be inclined in the circumferential direction. For example, a tilted ring is located in a series of parallel planes! It's okay to do so. In this case, the advantage is that the spiral line shape The inclination of the ring with respect to the thread running path is such that the thread travels as short a distance as possible on the outer surface of the ring. Selected to run at a distance. In other words, the slope of the ring is opposite to the slope of the yarn running path. facing, and the thread is at a 90 degree angle with each ring, or slightly different from that. They are chosen to form an angle.

An advantageous embodiment of the invention is defined in claim 2. In this case, it is advantageous to The lead is chosen in the direction opposite to the lead of the yarn running path. This allows the thread to form a ring. Make contact at the shortest distance possible. For example, a spiral line or helical web may be used. For example, in the form of a spiral line or string-wound wire, it is pressed onto a cylindrical heating tube. and may be replaced upon wear. Replacement of web in the form of wire rod cleaning Such a web can easily adhere to the heating tube by elastic contraction. , and is a spring wire expanded by compression and pulled out from the heating tube.

In the known heating element, which uses a web to guide a thread along a surface that is strongly heated, However, the disadvantage is that the surface and parts of the web have a required self-cleaning temperature. Although the web is cooled by the running thread, the temperature is automatically cleaned. lower than the operating range. These disadvantages can be overcome by the advantageous embodiment according to claim 3. can be avoided. In this case, the web is formed by a notch, and the notch is machined into the heating surface of the heating tube, leaving a web between the notches, The tube extends in the circumferential direction of the heating tube or at an angle with respect to the circumferential direction. like this The notch extends circumferentially over the entire circumference and in this case is configured as a groove. Ru. The grooves are arranged along a part of the heating tube in the circumferential direction, and are also part of the spiral line of the yarn running track. It is best if it extends for several minutes. In this case, it is advantageous for the grooves that follow one after another to also form a helical spiral. It is placed offset in the direction of the inn.

Therefore, in such a configuration, the ring may be located in a vertical plane or located in planes parallel to each other or on the helical line of the heating tube. stomach. In this case, what has already been said applies for the direction of the spiral line. Rin The web may be formed according to the features of claims 4 and 5.

In the configurations of claims 4 and 5, from the heating tube to the running surface of the ring, that is, the outer peripheral surface. Good heat transfer is achieved, so that the running surface of the ring is constantly self-cleaning. temperature.

The ring height or notch depth is between 0.1 mm and 5 mm, preferably 0.5 mm. If the thickness is selected between 3 mm and 3 mm, there is a risk of burning the yarn even at high temperatures. does not occur. The lower limit is the radius of the heating tube, the slope of the spiral line of the thread running path, or the heating defined by the curvature of the surface and the spacing between successive rings or webs. and should be chosen so as not to allow the thread to contact the heating surface itself.

The web and the heating surface consist of one piece and therefore have a particularly good thermal contact. and that the web has only a small height relative to the heating surface. The absence represents a significant improvement over known technology. like this The improvement is any method that guides the yarn along the heating surface in one curved yarn line. This is advantageous in high-temperature heating devices of the type (claim 4.5).

In the heat treatment of chemical fibers, especially those with small thickness and denier, The wear of the guiding surface is extremely important to the quality of the product. This heats the thread This also applies to false-twisting machines in which the threads are rotated about their axis in the region of the parts. on the other hand In order to avoid wear on the side of the heating element, the heating tube of the heating element is preferably arranged rotatably. ing. Therefore, this heating tube rotates continuously or slightly at predetermined time intervals. as a result of which a new thread running trajectory is adjusted.

Due to the advantageous use of electrical resistance heating devices, the rotation of the heating element is limited to a limited range. This is possible only in To this end, advantageous developments of the invention are provided in claims 6 and 11. It is.

Of course, relative rotation between the ring and the heating tube or between the sleeve and the heating tube This is only possible by cylindrical construction of the heating tube.

Based on the development of claim 6, the ring is formed as an independent component and is mounted on the heating tube. can be inserted into In this case, the inner diameter of the ring is approximately equal to the outer diameter of the heating tube, and The result is a good heat transfer contact between the heating surface and the ring.

Based on the features of claim 7, it is possible to replace the rings individually, in which case , the thread guide portion of the ring extends only over a portion of the circumference of the heating tube.

Nevertheless, in the structure of claim 7, almost the entire circumference is used for thread guidance. Can be done. According to the structure of claim 8, a continuous and uniform shift is caused from ring to ring. adjusted in the direction.

In order to guarantee the inner contact between the ring and the heating tube on the yarn running side, each ring is Based on the configuration of claim 10, the heating tube is crimped to the heating tube by an elastic bending member.

This elastic curved member rests against the side of the radial slit on one side and It is supported by heating tubes in the central area.

The installed web or ring also has a height of 0.1 mm to 5 mm relative to the heating surface. It is particularly advantageous if the diameter is chosen advantageously between 0.5 mm and 3 mm. Ru.

In this case as well, the lower limit is determined by the radius of the heating tube, the slope of the spiral line of the yarn traveling path, or the defined by the curvature of the thermal surface and the spacing between successive rings or webs and should be chosen so as not to allow the thread to contact the heating surface itself.

In the configuration of claim 11, at least the peripheral portion of the heating tube for yarn travel is thin. Covered by a plate (sleeve), the thin plate perfectly fits the surface shape of the heating tube. and is in heat conductive contact with the surface of the heating tube. In other words, the sleeve does not need to extend all the way around the heating tube, but only in the part of the heating tube that faces the yarn running path. (heated surface).

However, the sleeve may also be configured as a thin-walled tube. In this case , the inner cross-section of the sleeve is closely matched to the outer cross-section of the heating tube, and It is advantageously adapted to be rotatable. When the heating tube is configured in a cylindrical shape , the sleeve is also advantageously designed as a cylindrical tube, so that the sleeve Rotational guidance is guaranteed. A ring of the shape already described is formed around the outer circumference of the sleeve. Ru. The sleeve preferably consists of a sheet metal. The ring has multiple vertical sleeves It is engraved or compressed in a plane to create an outward ring-shaped curved part. It is formed in this way.

This creates a cavity associated with heat transfer.

On the other hand, it is possible to attach a solid ring to a thin plate in a manner that allows good heat transfer, e.g. by welding. This is expensive and technically difficult to produce. This kind of difficulty This is eliminated by the arrangement according to claim 13. Based on this configuration, a smooth surface A sleeve or casing is fitted over the surface heating tube, and the sleeve or casing is fitted over the heating tube. The inner diameter of the casing corresponds to the outer diameter of the heating tube, and the sleeve or casing The mantle wall of the ring, i.e. the peripheral wall, is formed by cutouts of the same shape arranged uniformly in the axial direction. It has been penetrated. Advantageously, rows of identically shaped recesses are located opposite each other in the sleeve. and in this case it is advantageous to have another shaped A row of notches is located. The rows may extend parallel to the axis. arranged in one column Between the arranged notches, a web of the same shape extending in the circumferential direction corresponds to the shape of the notch. positioned. Such a sleeve is secured against axial movement on the heating tube. However, it is rotatable. This has an advantage in that it can be used on the heating tube. Due to the periodic or continuous rotation of the sleeve, the thread is always kept clean in the web. On the other side, the yarn is subjected to different temperature ranges due to the different shapes of the web. It can be heated. Webs or cutouts of the same shape are located diametrically opposite each other in the sleeve. Because it is repeated at regular intervals or at predetermined angular intervals, A running path for the yarn is formed. A groove extending along the length of the sleeve between the rows of notches web is not important to the subject matter of the invention.

In this case, the sleeve consists of a thin plate that is continuous in the axial direction (with several notches formed in it). There is. This notch is formed to leave a web between adjacent notches in the axial direction. The web extends in the circumferential direction. Even in this configuration, the web It does not have to be located in the vertical plane of the heat tube, but - at an angle relative to the vertical plane. It's okay to stay. Furthermore, the web does not need to extend all the way around. Preferably, The sleeve consists of one piece that spans the entire length of the heating tube, and each cutout is It extends over a part of the circumference (partial width).

As already mentioned, a small ring height is required for uniform heat transfer to the threads and Advantageous for good control of transmission. For this reason, thin plates are particularly advantageous. The thickness Q is chosen between 1 mm and 5 mm, advantageously between 0.5 mm and 3 mm. It will be revealed. The aforementioned limitations also apply in this case.

According to the structure of claim 6, the spacing between the rings can be varied over the length of the heating tube. is possible. In order to make such a configuration possible also in the case of the use of sleeves , the structure of claim 15 is proposed. In this case, the sleeve has separate axial cuts The cut pieces are advantageously pushed in and out of each other in a telescopic manner. It is. Each section has a ring around its outer periphery.

The spacing between the rings can be changed depending on whether the cut piece is pushed in deeply or shallowly.

Attaching the thread guide, i.e. the web of the thread guide sump, onto the thin plate covering the heating surface, The formation of the web by a thin plate with a cutout or a cutout is provided in accordance with the features of claims 12 and 14. It is possible based on

As already mentioned, thread guides are placed at the inlet and outlet of the heating tube, respectively. . Both thread guides are offset from each other in the circumferential direction of the heating tube, so that the thread Guided on the ring in a spiral line of gradient. Spiral line slope and ring table The radius of the surface defines the curvature of the yarn running path. The curvature of the yarn running path affects the stability of yarn running. It is important for The stability of yarn running is determined by other parameters that affect the stability of yarn running. In order to adapt to parameters such as yarn tension, degree of twist in the false twist crimp process, Based on the structure of claim 16, the yarn guide and the heating tube are opposed to each other in the circumferential direction of the heating tube. physically movable and positionable.

As already mentioned, it is thermodynamically advantageous to heat the heating tube symmetrically. Canada Thermodynamically good utilization of the heat tube is possible with the embodiment of claim 17. in this case , the thread wraps around the heating tube in one helical line in the same direction. Winding of each group If the angle is less than 180°, more than two threads can be heated in each heating tube It is. This makes conditions, especially yarn feeding, difficult. This is especially true for heating tubes. must be surrounded by an insulating casing for insulation, and the insulating casing must be This also applies if the heating tube only allows limited access to the heating tube. like this The insulating casing preferably surrounds the entire heating tube and covers as narrow a radius as possible. It has a slit in the direction, that is, an insertion slit, and the slit is on the generatrix of the heating tube, Or it is located parallel to the generatrix. With this configuration of insulating casing In this case, a limited supply of multiple threads is possible. According to claim 18 In the configuration, both threads can be fed or inserted in any order without difficulty. in this case, A thread guide is provided at the entrance and exit for each thread running track. heating The thread guides on one side of the tube, e.g. the exit side, are placed closely together and approximately at the insertion slit. is located in the radial plane of The thread on the other side of the heating tube, i.e. in this case the inlet side The guide has a large distance symmetrically with respect to the radial plane of the insertion slit in the operating state have. Advantageously, the thread guide has an insertion slit for thread supply, ie for thread insertion. is moved between the radial plane of the cut and the operating position. Therefore, each group It is inserted into the thread guide at the inlet and outlet of the heating tube in the radial plane of the slit. Next Then one of the thread guides is moved in the circumferential direction, which brings the thread onto the driving track. be transferred. In this way both threads can be installed in any order.

The temperature of the heating surface is significantly higher than the target temperature at which the yarn is being heated. For thermal components, although the target temperature is achieved in any case, the target temperature may not be exceeded. must not. For this purpose, the temperature of the heating surface and the yarn speed are the most important parameters. It is adjustable. On the other hand, the thread thickness and heating tube length are fixed. .

The adaptation of the thermal action to the yarn depends on the quality of the yarn and the texturing in the false twist and crimping machine. That's important. For this reason, the contact length of the thread guide is adjustable.

This makes it possible to obtain thermal effects for the desired yarn running speed and yarn diameter (count) in each case. Optimal adjustments are made. For this purpose, the heating element and the thread guide are also It is configured so that the cards can be exchanged.

In order to adapt the thermal effect to the yarn speed and yarn count, it is furthermore advantageous to adjust the contact of the yarn guide. The ratio between the length and the non-contact length of the heating element is adjusted, especially in the adjustment zone. this place In some cases, the heating element has the form of a tube, for example. Spread in the circumferential direction around the heating tube. A plurality of web or ring segments are provided. web or ring The segments may be arranged circumferentially in a sequential manner. This allows the heating tube to The threads are wound in a helical line sequentially over a range of approximately the same contact length with each other on the web. Contact the web.

In the embodiments of claims 19 to 22, the heat transfer to the yarn can be controlled by another adjustment parameter. temperature and thus the target temperature of the yarn is controlled. Adjustment parameters along the heating surface Ratio of contact length/non-contact length of yarn running track (claim 19.20) and heating the height of a ring or web on a surface or to form a ring or web The depth of the notch is claim 21.22). In the configuration of the present invention, the contact ratio and or the height of the ring or web on the circumferential surface of the heating tube, or the yarn running direction of the heating surface. The horizontal width can be changed.

The ring segment or web has a diameter multiple times the yarn diameter in the direction transverse to the yarn running direction. It has a working width. The contact length of the ring segment or web in the thread running direction is The thread running path is different over the working width of the ring segment or web. adjusted relative to

The yarn running track is a heating tube, or a ring or web attached to a heating tube, or The sleeve is attached to the heating tube and moved relative to the circumference of the sleeve.

For this purpose, in the configuration of the present invention, the inlet yarn guide and the outlet yarn guide are synchronously arranged in the circumferential direction. be moved to. However, without changing the position of the thread guide, heating tube or a ring attached to the heating tube (claims 6 to 10) , or surrounding the sleeve inserted into the heating tube (claims 12 to 14). It is also possible to rotate it in the direction, ie to move it relative to the yarn running path. phase Anti-movement may be done manually. In this case, the height and width may be changed continuously or in stages. change.

The relative movement advantageously has a direct influence on the heat transfer and thus on the target temperature of the thread.

The yarn temperature of the running yarn is continuously measured and the yarn is moved relative to the surroundings of the heating tube. and constantly maintain the target temperature at a predetermined target value (claim 26). is also possible.

In the heating member with the attached sleeve, the notch is It has a width that increases or decreases in the lateral direction. Further advantageously, the heating tube Notches of different shapes are lined up in the sleeve circumferentially, i.e. transversely to the thread running direction. The ring segment or web has a constant radius or has sectors of constant height or segments or webs. The width and/or height varies exclusively in one yarn heating zone or in segments The width and/or height of the thread or web varies differently in different yarn heating zones. Ru. This allows for variations in the heat supply for each unit as well as the same temperature distribution along the heating tube. The relative changes in heat supply for multiple threads guided at the same time and thus the phase of the target temperature Mutual adaptation is also possible.

The effective yarn temperature and thus the target temperature have a significant influence on yarn quality during the false twist crimp process effect. For such qualities, the yarn tension measured downstream of the friction false twisting device is involved as an important parameter. Therefore, the yarn tension, especially the frictional false twisting device and the subsequent delivery device, the yarn tension on the periphery of the heating tube It is adjusted by the relative movement of the running track, which allows the measured and desired yarn tension to be The deviation between them is prevented from exceeding a predetermined tolerance (Claim 27).

The features of claims 19.21.26 and 27, particularly preferably the features of claims 20 and 22. composition is used uniformly for all heating elements.

For multiple thread runs on the heating tube, the ring covers both thread runs on the circumference of the heating tube. The ring height or notch depth changes the same when the orbit moves synchronously relative to each other. configured to allow Suitable configurations are described in claims 23 and 24.

The heating member according to the present invention, especially when the thread runs on the heating tube, has two important functions. There will be a need. In the entry region of the yarn run, the required amount of heat must be transferred to the yarn. . In the exit region, the heat distribution in the cross section of the yarn is regulated, which allows the entire cross section of the yarn to be The target temperature of the body is regulated. Based on these two different effects, the degree of heat transfer The degree differs depending on the length of the heating tube.

In this specification, the range of the heating tube length that achieves the target temperature over the entire cross section of the yarn is defined as the end range. This is called an end section. The section of the heating tube length that is particularly problematic for heat transfer is called the adjustment section. It will be revealed. The contact ratio is significantly smaller in the end section, or if the ring height of the end section is Multiple times thicker than the corresponding value of the adjustment category.

A special feature is that the thread is only slightly in contact with the thread guide in the inlet area of the heating tube. , for this purpose thread guides are arranged at large distances there. Advantageously, the entrance range The enclosure consists mainly of one inlet thread guide and one outlet thread guide. . Further advantageously, the inlet thread guide is maintained at a low temperature. For these reasons, entering The ligature guide is not in thermal contact with the heated surface. This makes the thread guide almost cold. maintained, resulting in separation of the thermoplastic material. On the other hand, on the exit side The thread guide should have self-cleaning properties.

The thread guide on the outlet side is therefore preferably connected to a heating surface, a so-called regulating section. At the start of the minute.

The adjustment section is the section in which the yarn has a target temperature. The adjustment section is at the inlet section of the heating tube. Connected. A plurality of thread guides are arranged in the adjustment section. This kind of thread The IDs are spaced at the same distance from each other, or as described in European Patent No. A20412429 It has varying spacing as shown in the specification.

By using a thread guide in the adjustment section, the thread is precisely defined relative to the heating surface. You will be guided at the specified distance. Additionally, ensure that the thread is in contact with the heating surface in the entry section. In order to The distance between the heating surface and the yarn running track is adjusted by the distance between the heating surface and the thread running track. It is multiple times the distance.

Precise guidance of the thread against the heating tube ensures that the thread reaches a predetermined target temperature. receive. Precise guidance of the thread is omitted in population classification. This is due to the addition of threads. The heating is carried out with a large temperature gradient between the heating element and the yarn, and a precise temperature introduction into the yarn is desired. This is because it is rare and impossible.

By heating the yarn in the conditioning section, first the outer layer of the yarn receives the desired temperature. deer However, uniform heating over the entire cross-section of the yarn is required. Such purpose is The downstream side of the adjustment section has a thread guide with a large spacing or a thread guide. This is achieved by placing no termination section. The heating element is applied at the end section of the yarn. In order to avoid contact with hot surfaces, the heating surface of the end section and the yarn running track are preferably The distance between the adjustment section and the yarn running track is multiple times the distance between the heating surface of the adjustment section and the yarn running track. sea bream. Such a configuration of the end section allows for the transfer of only small amounts of heat. Also, heat losses are avoided and the heat supplied to the conditioning section is uniform over the entire thread cross-section. Distribution is done.

In the entry section, a large unsupported thread length is accepted, i.e. in the entry section there is no vibration of the thread. The tendency is low. Lengths of 400 mm to 500 mm are possible. However, this Such length is limited to the extent necessary to effect the desired preheating of the yarn.

The terminal section is in any case shorter than the entrance section; the length of the terminal section is The advantage is that it is limited to 300mm, and it would be advantageous to make it even shorter.

Based on the invention (the range of use of the heating element is for the false-twisting process, especially for thermoplastic yarns, False twisting for draft texturing of polyester or nylon It is a shrinking process. In such a false twist crimp process, undistracted or Pre-oriented (POY) yarn is fed as a transport bobbin for delivery Unrolled by the device. The yarn or thread is then passed through a heating element and subsequently It is guided via cooling rails and through a friction false twisting device. The yarn is friction-twisted by a device It is then pulled out and then rolled up. Another heating element before the winder and one delivery device are arranged. The yarn is twisted in the circumferential direction using a friction false twisting device. The strands are ignited by friction, and the twist returns from the friction pre-combustion device to the heating device. It is unraveled again in a friction false twisting device (claim 31).

The yarn is heated using the heating element according to the invention at yarn running speeds of 1000 meters per minute or more. and there are no friction or overheating problems.

In heating elements with attached rings or sleeves, the yarn heating area is Regular automatic cleaning of the yarn heating area by rotating against the yarn at predetermined time intervals can be achieved.

Embodiments of the present invention will be described in detail below based on the drawings.

drawing 1 is a plan view of the ring for the heating tube of FIG. 3, and FIG. 2 is a plan view of the ring for the heating tube of FIG. 3 is a side view of an embodiment of the heating tube according to the invention, and FIG. 4 is a side view of an embodiment of the heating tube according to the invention. 5 and 6 are side views of another embodiment with a helical line ring, FIGS. 7 is a longitudinal sectional view of an embodiment with multiple heating zones, FIG. 9 is a perspective view of an embodiment with several heating zones, FIG. Fig. 10 shows a side view of a heating tube with a web of varying height in the circumferential direction. A perspective view of the embodiment, and FIG. 11 is a longitudinal section of the embodiment with a web whose height changes in the circumferential direction. Fig. 12 shows an embodiment with a web whose contact length and contact height change in the circumferential direction. Side view, FIG. 13a is a top view of the heating tube with two yarn running tracks, FIG. 13b is a two-way Figure 14 shows a developed view of a heating tube with a yarn running track of FIG. 15 is a plan view of a heating tube with a yarn running track of Figure 16 shows a side view of a heating tube with a yarn running track of Figure 17 shows a side view of a heating tube with a yarn running track of Figure 18 shows a side view of a heating tube with a yarn running track of A plan view of a heating tube with a thread running track, FIG. 19 shows the attached sleeve and ring. 20 is a side view of a heating tube with a sleeve and two thread running tracks. Exploded view of the tube, Figure 21a; top view of the sleeve with different shaped notches, Figure 21b are perspective views of heating tubes with sleeves with cutouts of different shapes, FIGS. 22a and 22a; 22b is a longitudinal cross-sectional view of a heating tube with a telescopically movable sleeve; Figures 23 and 24 show a false twist crimp machine equipped with a yarn tension measuring device and a yarn temperature measuring device. FIG.

Example All the heating bodies shown are constructed as tubes and are referred to below as heating tubes. heating The tube 1 is cylindrical and straight. The heating tube is a rotating body, or a rotating body section, or They may also be configured as rotating body segments; This allows the thread to run along the thread.

The heating tube 1 has a single resistance heating device or a plurality of resistance heating devices extending parallel to each other, that is, a heating device. It maintains a thermal resistance of 6. The heating resistor is configured as a cartridge and the heating Extends over the entire length of the tube. The heating tube 1 is made of a metal with good thermal conductivity, such as steel, young or preferably of a copper-aluminum alloy. The conductor is indicated by the symbol 6a. Ru. The illustrated heating element, i.e. the heating tube, is actually confined within an insulating casing; The insulating casing has a radial slit for thread introduction, i.e. an insertion slit. and forms a circumferential gap with respect to the heating tube. Thread guides in the same gap around the circumference be done.

A large number of webs are arranged in the heating tube 1, and the webs are arranged in rings or in the range where the yarn travels. is constructed as a ring segment.

The circumference of the ring segment may be spherical. The area around the ring segments is free from wear. It exhibits good properties for non-woven yarns, i.e. it causes almost no friction on the running yarn.

The periphery of the ring segment is used for guiding the thread 7, so that the thread can pass through the artificial thread guide 8, and through the exit thread guide 9 via the circumferential surface of the ring segment. entrance The yarn guide 8 is offset relative to the outlet yarn guide 9 in the circumferential direction of the heating tube. That is, The thread 7 is wound around the heating tube in one spiral line or string winding. The lead of the in or string winding is in the circumferential direction between the entrance thread guide 8 and the exit thread guide 9. It is related to the deviation of The curvature of a spiral line or string winding is a ring segment. radius, the length of the heating tube, or the axial direction of the artificial thread guide 8 and the exit thread guide 9 and the circumferential deviation between the inlet yarn guide 8 and the outlet yarn guide 9. ing. These dimensions are such that the radius of curvature of the thread line is between 51 and 2511111; It is preferably chosen to be between 10III11 and 25111111. death However, in both cases the thread should not come into contact with the heating surface, i.e. the jacket wall of the heating tube. It's becoming a sea urchin. The diameter of the heating tube, the height of the ring segment beyond the jacket of the heating tube. The length, as well as the lead of the spiral line in which the thread is guided, are selected accordingly. at least one one thread guide is movable about the axis of the heating tube 1 relative to the other thread guide; It is advantageous to be able to swivel so that the thread running path on plate 2 is traced by thread 7. This can be changed based on changing the lead of the spiral line.

The ring segment or web extends as a ring around the entire circumference of the heating tube. good. This allows the entire circumference of the heating tube to be used for multiple yarn runs or yarn travel paths. Used to transfer the pipe to an unworn or uncontaminated area around the heating tube. It will be done.

The ring segment is at least occupied by the helical line of the yarn running track. It may extend over a circumferential angular range.

In the embodiment shown in Figures 1 to 3, the ring segments are separate components. It has a plate-like structure and is passed through the heating tube 4. Figures 1 and 2 As shown in detail, the ring segment 2 consisting of plates has a simple shape. It has one cylindrical hole, with the chain hole closely matched to the outside diameter of the heating tube.

Thereby, the ring segment 2 is in contact with the heating tube with good heat conduction. here In the advantageous embodiment shown in FIG. The inner width of the slit corresponds to the diameter of the heating tube 1. The opposing edges of are located parallel to each other. Outer edge of ring segment 2 is made up of circles. A recess or notch 4 is provided on the end face of the ring segment. That's it. Pin 3 as a spacer is inserted from the opposite end face of ring segment 2. The ring segment is protruding and the distance between the pin and the axis of the ring segment is corresponds to the distance between the axis of the recess 4 and the recess 4. Each ring segment has a It is sufficient to provide only one notch 4. However, advantageously, as shown in FIG. As shown in FIG. They are located on one circle at the same intervals with respect to the axis of the segment 2.

The ring segment 2 is passed over the heating tube 1 and projects from the ring segment 2 A pin 3 is inserted into a notch 4 in one of the axially adjacent ring segments. Ru. The ring segments 2 are preferably mounted on the heating tube 4 at regular angles with respect to each other. , so that the slit 5 and the pin 3 surround the heating tube in a spiral line. . As shown in Figure 1, multiple notches are arranged on one circle, and the slit The helical line on which the thread is located is adjusted to match the helical line of the yarn running trajectory. There is. In order to fix the ring segment l-2 to the heating tube 1, a wire rod is inserted into the slit 5. A shaped spring curved member 10 is inserted, and the end of the spring curved member is opposite the slit. Supported by the slit walls, i.e. the sides, the central region of the spring curved member is elastically applied. It is in contact with the heat tube 1.

Each ring segment is removed from the heating tube by removing the spring bend member. He can be replaced. This may cause the ring segments to become unacceptably worn. This is especially important if the condition has been compromised.

Yarn guides 8.9 are located on both sides of the slit 5 and guide the helical line of the running path of the yarn 7. The ring is located in the outer area of the cutout 5 of the ring segment 2. Pin 3, high In other words, the lead direction and lead of the spiral line where the slit 5 is located are the same as the thread running trajectory. It almost corresponds to a spiral line. Therefore, outside the slit 5 of the ring segment The entire circumference of is used for the yarn running track.

Advantageously, the ring segments are made of heat- and fire-resistant material, such as aluminum oxide or The material is made of titanium oxide. To increase the wear strength of the ring segment edges, The edges of the ring segments should be coated with a suitable metal (and the thread running The edges of the ring segments may be polished to improve the quality.

In the embodiment shown in FIG. 4, the rings 2 are located at the same distance from each other and are It is firmly connected to the heating tube 1 by attaching it. Ring 2 is constituted by a ridge. The ridges may be formed at regular intervals in the heating tube 1 by pu-nos molding. be done. Furthermore, the ring is formed by providing a groove around the heating tube. , a groove is machined into the circumferential wall of the heating tube 1 and protrudes in the radial direction of the ring 2. It has a spherical peripheral surface and has good running characteristics for yarn. ring 2 is a heating surface, that is, a thread 7 is placed at a predetermined distance around the heated heating tube 1. The running trajectory of the thread follows the heating tube 1 in a spiral line. It's wrapped. As schematically shown, there are thread guides 8. at both ends of the heating tube 1. 9 is located, and the mutual deviation of the thread guides causes the lead of the spiral line of the thread running track to stipulated. At least one thread guide can be adjusted in the circumferential direction of the heating tube. It has become.

By adjusting the thread guide in the circumferential direction of the heating tube, the spiral The inclination can be adjusted. A notable difference from the embodiments of FIGS. 1 to 3 is that A ring is rigidly connected to the heating surface or forms part of the heating surface. Li It is particularly advantageous to form the heating tube first with a thick jacket and then to form the heating tube with a thick jacket. It is formed by turning the ring and cutting out the ring. This results in improved heat transfer. and good contact can be obtained. Therefore, the temperature of the circumferential surface of the ring is approximately the same as that of the surface of the heating tube. will have the same temperature. As a result, the temperature on the surface of the heating tube is automatically cleaned. The ring also auto-clicks when adjusted over the 300℃ to 350℃ range. This results in the effects of This means that the lint disintegrates and becomes ash. easily wiped off or constantly entrained by the threads, resulting in heating tubes and This means that there will be no noticeable stains on the surface of the ring or on the threads. There is. The ring is located in the vertical plane of the heating tube.

In the embodiment of FIGS. 5 and 6, the heating tube is surrounded over its entire length by a ring 2. The ring is in the form of a spiral wire. The ring can be brazed, e.g. The heating tube 1 is rigidly attached to the heating tube 1 by means of a helical (coupled spiral) - in the same sense a string-wound or coil It may be a single wire rod. However, the spiral ring It may be formed by cutting out a portion. Also in this example , a significantly better contact for heat transfer is obtained.

In the embodiment of FIG. 6, the helical ring is made of a wire of elastically deformable material, It is made of chibane wire. The wire forming the ring is wound around the circumferential surface of the heating tube 1. and is configured to be in elastic thermal contact with the circumferential surface of the heating tube.

I want to keep the inside of the wire that makes up the ring as flat as possible.

The lead of the wire that is spirally wound around the heating tube 1 as the ring 2 is attached to one side of the wire. Rotate one end of the heating tube in the circumferential direction relative to the other end on the circumferential surface of the heating tube and in the axial direction. It can be changed by displacing it. Expanding the spiral line of the ring or By narrowing, the virtual cylinder drawn by the spiral line of the ring becomes the heating tube. is adapted to the outer circumference of. In Figure 6, ring 2 is shown in the expanded position by a solid line. and is shown by the dashed line 2a in the narrowed position. wire spiral line Expansion or contraction caused by changes in compensation by moving each other in the direction, which causes the helical line of the wire to It is adapted to the diameter of the heating tube 1.

In the embodiments of FIGS. 5 and 6, the thread 7 is also guided in one helical line, The lead of the spiral line of the yarn running path is facing oppositely to the lead of spiral ring 2. Ru.

In the embodiments of FIGS. 5 and 6, a contact surface between the thread and the ring or wire is created. only kept short. A further advantage is that slight changes in the yarn running trajectory This results in a significant change in the contact surface. Furthermore, the embodiment of FIG. 6 has the advantage that The density of support, ie the number of support points, which creates contact between the thread and the ring can be varied. this In this case, a range of particularly high ring support densities is obtained. This is especially true for the length of the heating tube. This is important for the adjustment section in the hand direction. This allows for different longitudinal divisions, At this point, there are no more rings in the inlet section and the end section.

The absence of a ring in the inlet section or the end section means that the ring is rotatably arranged. The inlet yarn guide 8 or the outlet yarn guide 9 and the stationary heating tube 1 are made to cooperate with each other. or by means of a fixedly arranged inlet thread guide 8 or an outlet thread guide. By cooperating the door 9 and the heating tube 1 which is rotatable about the vertical axis, or Alternatively, a rotatable inlet yarn guide 8 or an outlet yarn guide 9 and a rotatable heating tube 1 This is done by collaborating with

In the embodiment of FIG. 11, the outlet yarn guide 9 is relatively The inlet thread guide 8 is arranged stationary, whereas the inlet thread guide 8 is movable.

In the embodiment of FIG. 7, the outlet thread guide 9 connects the notch 16 to the lower end of the heating tube 1. coaxially and rotatably mounted to the Place the exit yarn guide 9 against the heating tube. By relatively rotating the running thread 7, a spiral line is formed on the ring 2. The geometry of this helical line, i.e. the windings and leads, is It is related to the rotational position of the knob 16.

The configuration already described in the embodiment of FIGS. 4 and 5, that is, the peripheral wall of the heating tube and the ring are integrated. construction, e.g. by brazing or welding the ring to the circumferential wall of the heating tube. the ring by suitable deformation of the surface of the peripheral wall of the heating tube, or Forming by processing the peripheral wall of the heating tube also applies to the embodiments shown in FIGS. 7 to 18. It fits. Such a configuration basically involves the yarn being passed through the web to a heated surface, advantageously the yarn Used for all heating elements guided along a heating surface curved in the direction of travel . The ring has a significantly smaller height and is shown exaggerated in Figures 3-5. It is. The height of the ring from the heating surface (the peripheral wall of the heating tube) is the height of the ring. (same as the difference between the diameter and the radius of the peripheral wall of the heating tube) is Q, 3 mm in the minimum case, and preferably does not exceed 5 mm, preferably 3 mm. The height of the ring is advantageously Q, 5 mm. It is between 3mm and 3mm. The minimum height is such that the thread does not touch the peripheral wall of the heating tube between the rings. be chosen as such. Therefore, the minimum height is determined by the spacing between the rings and half of the peripheral wall of the heating tube. related to diameter. Such dimensions ensure good heat transfer to the outer circumferential surface of the ring. , as a result, the outer circumferential surface of the ring is always at a self-cleaning temperature or Also, extremely high temperatures are generated. Furthermore, the threads disturb the edge area of the peripheral wall of the heating tube. guided without the occurrence of significant air convection. Therefore, if the yarn is heated from the heating surface, i.e. Exposed only to thermal radiation from the circumferential wall of the tube. In addition, cooling or uncontrollable temperatures There is no airflow that would cause a change.

In the embodiment of FIGS. 7 and 8, the thread 7 is first guided through an inlet thread guide 8. , then reach the area around the heating tube. The thread has an axial force component and an exit thread guide 9 and guided along the heating tube. The exit thread guide 9 is , equipped with a notch 16 for thread guide and rotatable around the axis of the heating tube. Consists of plates. Figure 7 shows the entrance thread guide 8 and the notation for clarity. 16 are shown on the same plane. As is clear from FIG. 8, the thread is on the heating tube 1. It extends in a steep spiral line. Adjustment of the rotation of the exit yarn guide 9, i.e. The rotational movement adjusts the winding of the thread on the heating tube in the circumferential direction. heating tube The winding of the thread upward in the circumferential direction means that the thread is curved. Winding thread onto heating tube The binding prevents the thread from constantly touching the heating tube, i.e. the ring attached to the heating tube. It is closed.

The heating element or heating tube has three sections, namely an inlet section 11, a regulating section 13 and an end section. It consists of 12 end sections. The thread passes through the entry thread guide 8 to the entry section 11 and It is guided via a first ring which serves as thread guide 2.1 of the adjustment section 13.

The inlet thread guide 8 is designed to avoid contact with the heating tube as much as possible. Therefore, entering There is no possibility that the lisp guide 8 will be heated. As a result, the artificial thread guide 8 is There are no volumes generated from heated threads.

The distance between the circumferential surface of the inlet section 11 and the thread is the same as that between the circumferential surface of the adjustment section and the thread located therein. The distance between the two rings 2.2 and 2.2. Entrance thread guide 8 and adjustment section No. The distance between ring 1 (thread guide 2.1) is the same as the distance between rings in the adjustment section. multiple times. In this case, spacings of up to 500 mm are permitted. The interval is the vibration slope. direction, that is, the generation of vibrations. The length of the entrance section 11 is small; is selected to at least allow efficient preheating.

The temperature adjustment device of the heating tube has a temperature sensor (not shown), and the temperature sensor detects the effective actual temperature of the regulating section 13. The actual effective temperature of the adjustment section is regulated, so that the regulating section has a highly accurate temperature.

A plurality of thread guides 31 are arranged in the adjustment range, that is, the adjustment section 13. According to the invention, the thread guide 31 including the first thread guide 31.1 is constructed as a ring. It is. Such a ring extends over at least a portion of the circumference of the adjustment section. ing. The rings have the previously mentioned predetermined spacing and a predetermined height on the circumference of the adjustment section 13. It has a certain quality. The number of rings is determined by the vibration tendency of the thread and the heat transfer. tone The height of the web or ring relative to the peripheral wall of the fairing section is selected to be small, advantageously is 3■ at maximum. Said height of the ring is advantageously less than 1.5 mm, but However, it is larger than 0.3m+s.

The ring is machined from the circumferential wall of the adjustment section and therefore fits well against the heating tube. are in heat transferable contact. Due to the small height of the ring, even on the contact surface A controlled temperature, i.e. a heating temperature, is reliably produced.

As a result, the heating temperature exceeds 300℃, and the lint that sticks The decomposition or combustion of the web, i.e. the contact of the ring 31.1.31.2.31.3 It also occurs on surfaces. Therefore, good automatic cleaning even in the thread guide, i.e. in the ring. Effect can be obtained.

The width of the ring in the thread direction is, as in all examples, relative to the heat transfer. is important.

For the protection of the threads, the contact length is chosen short, in this case against heat transfer. Compromise with demands is necessary. The axial spacing between the webs, i.e. rings, i.e. the thread pattern Internal spacing affects heat transfer. A ratio of up to 20% between the contact length and the spacing between the rings. A proportion is advantageously less than 10%.

The spacing of the heating surfaces, i.e. the spacing of the circumferential wall of the inlet section, is the same as that of the ring relative to the circumferential wall of the adjustment section. It is 3 to 10 times the height of 2. In this regard, the drawings are not shown to exact dimensions. Not yet.

In the terminal section, the thread passes through a less ring, which also adjusts here the terminal section of the section. Through the ring 2.3 as a thread guide as well as the thread guide notch 16 of the plate 9 be internalized. The distance between the yarn running track and the circumferential wall of the end section 12 is equal to the circumferential wall of the adjusting section. It is thicker than the height of the thread guide ring 4 (, multiple times), and such dimension regulations also applies to entrance section 11. Overall, the spacing of the thread guide rings in the end section is smaller than at the entrance section. Thread guide ring spacing is 300■, advantageously smaller than that. The plate 4 attached to the heating tube has the same ( Automatically heated to cleaning temperature.

Otherwise, the construction of the ring corresponds to the construction described in FIGS. 1 to 6. figure 7 and 8, the ring is formed from one piece together with the circumferential wall of the heating tube. .

Next, the embodiments of FIGS. 9, 10 and 11 will be described: heating member, i.e. heating tube 1 has an entrance section 11 on the population side and a terminal section 12 on the exit side. The minute and end sections are located on the circumferential surface of the circumferential wall of the heating tube 1 with respect to the yarn 7 running nearby. has a larger radial spacing.

The adjustment section 13 between the inlet section 11 and the end section 12 has another feature, This peculiarity lies in the arrangement of the rings.

As is clear from FIG. 9, the inlet yarn guide 8 and the outlet yarn guide 9 are connected to the heating tube 1. The surface of the ring 2 is therefore relatively rotatable based on the rotation range 15. The range of angles that can be stroked by the thread 7 can be obtained. This creates a gap between the thread and the ring. A range of possible contacts arises.

The yarn 7 can be moved at any point within the above angle range, including the entrance yarn guide 8 and the exit yarn guide. 9 and heating tube 1 relative to each other relative to each other.

The particularity of Figure 9 is that the ring 2, 1.2.2 and possibly the ring serving as a thread guide It has a circumferential structure of 2.3. The web, or ring, increases in the axial direction in the circumferential direction. It has a spread or width of . In this case, the narrowest point can be estimated from Figure 18. Rather than being located exactly on one generatrix line, so that It is located on the inn parallel to the The thread running line is changed. in this case For this purpose, a driving line must be selected that corresponds to normal driving conditions. Therefore, fig. In 9 there is not only an exit thread guide 9 in the form of a plate with thread guide notches 16; The inlet thread guide 8 is also rotatable about the axis of the heating tube. This allows the thread The running trajectory is such that the contact length of the ring 31 as a yarn guide around the heating tube has the desired dimension. and the desired ratio of the contact length to the non-contact guiding length between the rings occurs. Shifted inward. This controls the heat transfer as well as the running stability of the yarn.

The rings of the embodiments of FIGS. 9 and 12 are arranged in the circumferential direction in the angle range stroked by the thread It has a ring width that varies. That is, the width B of the ring is related to the circumferential coordinate. and change based on the respective given functions B(u). Here the function is one secondary.

Another peculiarity of the embodiment of FIG. 12 is that the ring 2 in the area of contact with the thread 7 It has a height H that varies in direction. That is, the height H is a function U(h ).

In the embodiment of FIG. 9, the ring width B increases in the circumferential direction as the ring height H decreases. It's a big deal. Therefore, one would expect that based on the increase in the ring width B, the ring In the axial range of no contact between rings 2, with increasing contact time of thread 7 against Also, the thermal influence on the yarn increases due to the reduction in the distance between the yarn 7 and the circumferential wall of the heating tube. In addition, as additionally shown in FIGS. 10 and 11, the ring 2 Even if the width of the web, that is, the web width, does not change in the circumferential direction, It may have a height that varies circumferentially in a degree range. The opposite is also true For this purpose, reference may be made in particular to FIGS. 14 and 18, which will be explained later.

Both embodiments of the invention, i.e. a variable width ring and a variable height ring. can be implemented in combination with each other or separately from each other. It is clear.

The width B of the ring may vary stepwise. This means that the width B of the ring is constant and stepwise at predetermined circumferential coordinates, e.g. It means to increase from a large size to a large size. The same goes for the height of the ring l-1 The same applies to . This reduces the contact area between the thread and the ring. A slight lateral movement affects the heat transfer between the heating surface, i.e. the peripheral wall of the heating tube, and the thread. This is possible without causing any harm.

In the embodiments shown in Figures 9 to 11, the ring is formed by forming a ring groove on the peripheral wall of the heating tube. shape by leaving the ring according to the invention guiding the thread 7. has been completed. In the embodiments of FIGS. 10 and 11, the ring groove is formed on the peripheral wall of the heating tube. The ring grooves have different depths in the circumferential direction, and in the embodiment of FIG. It has a width.

Mode of action: The heat transfer from the heating tube 1 to the thread 7 takes place in the area of contact between the ring 2 and the thread 7 in the − plane. . In addition, heat flow to the thread 7 occurs in the axial region where the threads between the rings 2 do not touch. . The bottom of the ring groove between rings 2 is at a distance of several millimeters at most from the running thread. , for example, since the distance is only from approximately 9.3 mm to approximately 5 I, heating The heating temperature of tube 1 is 300 degrees Celsius or more, especially the automatic cleaning temperature level. Due to the temperature of the bell, effective heat transfer also takes place in the axial region without contact.

The heat flow that acts on the yarn as a whole is determined by the yarn running trajectory and the geometry of the heating tube, respectively. It is a function of the geometry, which is the contact length and the axial range without contact. The height of the ring is determined by the entrance yarn guide 8 or the exit yarn guide 9 and the heating tube 1. This is because it is related to the relative position. Therefore, contact ratio and ring height is an important parameter for heat transfer. In this case, the contact ratio is The quotient of the contact length of the yarn (Qu).

(tient) and the length of the contact-free interval to the next ring.

For example, a ring having different heights in the circumferential direction may be configured in a cylindrical shape. , and may be formed by being eccentrically arranged with respect to the axis of the heating tube.

However, the ring may also be formed oval or otherwise.

Examples of the above variations in heat transfer are described below in conjunction with FIGS. 14 to 18 and 21. Ru.

The heat flow, that is, the amount of heat transferred each time, is caused by the movement of the thread running track on the circumferential surface of the heating tube. It is extremely finely tuned. Due to the already slight change in relative rotational position, Overall, a noticeable change in the heat flow acting on the yarn and the resulting yarn temperature occurs.

Based on this recognition, the present invention is applied to a false-twist textured machine. Already The thread is guided along the heating tube on a helical line or string winding, as described in . The ring has a circumferentially varying contact width and/or a varying height above the circumferential surface of the heating tube. In the configuration of the heating tube shown in FIGS. 9 to 11, the thread passes through the ring along the spiral line. If you place emphasis on always making contact only at the same contact width or the same height, the order The next succeeding ring is offset in contact width and height in the circumferential direction with respect to the helical line.

Adjust the slope of the spiral line by rotating the artificial thread guide 8 or exit thread guide 9 Then, the deviation between successive rings becomes the average value of the leads that define the spiral line. Related and sufficient. This ensures that successive contact widths and heights are approximately the same size. It is.

Instead of a diagram that is extremely difficult and the overall connection is not clear, let me explain. , rings 2.1, 2.2, and 2.3 successively follow in the circumferential direction in FIGS. 9 to 11. Each is offset by a predetermined angular amount. This angular amount corresponds to the helical line of the thread running track. This corresponds to the average value of the adjustable lead.

Of course, you can abandon the circumferential shift of the ring and keep the ring the same width and/or height. It is also possible to arrange them one behind the other so that the points are located on one generatrix of the heating tube. It is Noh. By such means, the contact ratio of the ring along the yarn running path and the are configured with different heights along the thread running track, which in turn causes heat transfer to vary along the thread running track. Varies over length.

In all embodiments of the heating tube according to the invention, at least one running thread is It gets heated. A plurality of pairs of inlet yarn guides 8 and outlet yarn guides 9 are arranged around the periphery. With this, a corresponding number of running threads are processed simultaneously. For this purpose, the exit thread id 9 along the periphery in each case in the same direction relative to the entrance thread guide 8 . shifted . In this case, all the threads are wrapped around the heating tube in a helical line oriented in the same direction. will be guided.

Next, FIGS. 13a and 13b will be described.

Figure 13a shows a vertical section of the heating tube, in this case the insulation surrounding the heating tube. Material 41 is also shown. Figure 13b shows the insertion slit of the insulating member in the heating tube, that is, the vertical slit. It is a developed view seen in the direction of the lit 42.

The insulating member 41 surrounds the heating tube 1 as an annular body. Annular body, i.e. insulating member 41 has a vertical slit 42 in the peripheral wall. Vertical slit to avoid heat loss It is several millimeters wide. Of course, the insulating member 41 has the same end surface (Fig. L3a It may be closed by a covering layer not shown. Vertical slit 42 slit The width is shown exaggerated in Figures 13a and 13b. The exit thread guide 9 is fixedly arranged. and is located within the width of the vertical slit. The exit thread guide is of course located at the position shown in the diagram. and a position far away from the center line 40 of the vertical slit 42. stomach. In FIG. 13b, the insulating member 41 has been expanded as already described and has a thick circumference. indicated by a line.

In both cases, the entry thread guide 8 is in the mounting position shown in broken lines in FIG. 13b, ie the insertion position. It is possible to move from the position into the operating position in opposite directions (arrows).

As is clear from FIG. 13b, the insulating member 41 is located at or on the heating tube. Together with the rings that move, a narrow gap is formed in the circumferential area in which the thread can move. Entrance thread Move the id 8 in the opposite direction from the mounting position that matches the vertical slit 42 to the operating position. The thread is guided in a helical line around ring 2 by , the helical lines of both yarns have leads in opposite directions to each other.

The exit yarn guides 9 are also moved from the installation position that matches the vertical slit 42 to the operating position in opposite directions. If the inlet thread guide 8 is movable to the desired position, the entry thread guide 8 can be moved to must be moved further away to provide more power. Entrance thread guide 8 and The outlet thread guide 9 can also be arranged permanently in the operating position. In this case, the exit The yarn guide 9 is naturally replaced by the running groove of the cooling rail 19 shown in FIG. 13b, In any case, it will match the running groove. In this case, for the arrival and fitting The thread to be pulled out and guided by the suction gun is first inserted into the entrance thread guide, It is then guided through the longitudinal slit 42 and moved laterally to the exit yarn guide. It is designed to be inserted within 9.

There have already been examples in which the contact ratio and/or the height of the ring changes in the circumferential direction of the heating tube 1. Therefore, by moving the yarn line, i.e. the yarn running path, in the circumferential direction, the transmission Variations in the amount of heat achieved are possible. Figure 14, Figure 15, Figure 16, Figure 17, Figure 18 An example is schematically shown in which two yarns are heat treated on a heating tube.

In the embodiment of FIG. 10, the ring 2 is located eccentrically with respect to the tube axis 17. , in this case, one after the other (the eccentricities of the rings are shifted by 180 degrees from each other) Ru.

The advantage of this embodiment is that in the same direction between the heating tube and the yarn running paths 7.1 and 7.2 Due to the relative rotation of It is about being made into a person.

15 to 17 also show an embodiment in which the heating tube 1 is provided with two yarn heating zones 25. are doing.

Within each yarn heating zone 25a or 25b, a plurality of A web (ring segment 2) is attached to the surface to be heated, and this the height of the ring is at least 0.1 mm above the surface to be heated; However, it does not exceed 5 mm.

Due to the fact that the height of the ring 2 above the surface to be heated does not exceed approximately 5 mm, the Based on the invention of the heat tube (advantages, especially self-cleaning and fine adjustment possibilities are activated) used.

The width B of the ring 2 changes in the circumferential direction. This can be used alone or This is an advantage according to the invention in combination with a circumferentially varying ring height H.

In this case, if the height is decreased as the width increases, the heating effect will be on the yarn running track. It is strengthened over a wide range by movement.

In the embodiment of FIG. 15, the width increases from one generatrix of the heating tube 1 towards both sides. are doing. Therefore, when guiding one thread 7 on each side of the generatrix, the thread running Heating effect on both threads upon relative movement in the same direction between the track and the heating tube The opposite change occurs. If you do not want such a reverse change, change one of each The inlet thread guides 8 and 9 assigned to one thread run are connected to the thread guide of the other thread run. They can be moved individually in the circumferential direction of the heating tube. For this purpose, thread guide 8 and 9 are attached to the thread guide lever, and the thread is set so that the idle lever is aligned with the axis of the heating tube. It is possible to rotate around the center. As shown in FIG. In the thermal zone only, a ring of width B in the circumferential direction and of variable height similar to what was mentioned before is installed. In contrast, the ring width B and ring height H of the other yarn heating area are constant. It also makes sense to make it a central point.

In this case, the entrance yarn guide 8 or the exit yarn guide is used for one (left side) yarn travel. No relative movement between the id 9 and the heating tube is necessary.

For the yarn traveling on the other side (on the right), the relative motion between the heating tube and the yarn traveling path is This is possible by moving the associated thread guide 8 or 9. This kind of movement Thus, the heating action on one thread is matched to the heating action on the other thread. .

For all embodiments of the invention that produce relative movement between the heating tube and the thread running track. On the one hand, this relative movement in the circumferential direction causes heating while the yarn running track is stationary. Get produced by rotating the tube. This is understood in the false twist crimp machine. This is a possible means. This is because the thread running trajectory is determined by the geometric structure of the machine. changes in yarn running trajectory have a negative effect on yarn tension and other process parameters. This is because it has a negative impact. In other cases, the relative motion is A synchronously movable inlet thread guide 8 or outlet thread guide 9 is assigned to this The thread guide 8 or 9 is mounted, for example, on a thread guide lever 26 which can be moved into the end region. It is done by attaching. The change in heating effect is caused by the relative movement of the thread guide. Also possible based on changes in the lead of the thread line.

For synchronous rotation, the thread guide levers are connected via a transmission. Yo. In the embodiment of FIG. 16, the quality of the two yarns running on the heating tube is the same. They can be the same or can be intentionally adjusted differently.

In FIG. 17, reference is made to the same things as described in FIGS. 15 and 16. different As for the thread running path on the right side, the ring width increases in the circumferential direction. In contrast, the ring height remains constant around the circumference of the heating tube. ing. With respect to the left thread running path, the ring width increases towards the opposite side in the circumferential direction However, the ring height is decreasing. In this case, the right thread running track The entrance yarn guide 8 and the exit yarn guide 9 are moved individually along the left yarn traveling trajectory. Accordingly, it can also be adjusted based on changes in the lead of the thread running trajectory.

This is related to variations in ring width and ring height. Circumference of yarn running track The heating effect changes as the direction moves. That is, the absolute thermal effect for each yarn run is Not only the relative changes in thermal effects, but also the relative changes in the temperature that we are trying to obtain. adaptation is possible.

18a to 18e show the axis of a heating tube with a ring 2 whose height varies in the circumferential direction. FIG.

The variation in the height of the ring in the circumferential direction is, in the embodiment of FIGS. 16a to 16c, This is achieved by making it oval and coaxial with the cylindrical heating tube. It will be done. In this case, the two yarn heating zones 25a, 25b are arranged diametrically opposite each other. , and the entrance yarn guide 8 or the exit yarn guide 9 are respectively connected to the yarn guide lever 26. It is possible to arrange the threads to run at the same point in the operating conditions. for this The condition is that both threads are guided in a helical line in the same direction. In this case, both The synchronous movement of one inlet thread guide 8 or one outlet thread guide 9 causes both thread lines or or a congruent change in the operating conditions imposed on the thread line. same thing This also applies to a synchronous movement of both exit thread guides 9. Therefore, a pair of inputs The opening thread guide 8 and the pair of exit thread guides 9 are each attached to the same thread guide lever. The idle lever is rotatable about the axis of the heating tube.

In this case, the yarn run shown in FIG. 18c is particularly advantageous. Each group 7 is completely elliptical. It runs within a quadrant drawn between the long and short half-axes of the circle.

Within the selected quadrant, the amount of heat transferred from the heating tube 1 to the yarn is id 9 continuously increases over the entire length of the thread. That is within the quadrant When guiding the yarn, a large amount is generated between the yarn and the heating tube 1 at the entrance yarn guide 8 The distance decreases in the direction of the exit thread guide 9 while the thread is running, and reaches its maximum at the exit thread guide 9. This is because the value becomes small.

In all these embodiments, the gold between the inlet thread guide 8 and the outlet thread guide 9 The distribution of heat transfer over the yarn running length is also adjustable, as is the total amount of heat transferred.

The elliptical structure of the ring in Figures 18a to 18c and the sameness of the thread line based on Figure 18c. In arranging the thread running track in the selected quadrant with leads in the same direction, For adjustment, the minimum spacing of ring 2 in the range of the small semi-axis of the ellipse and the size of the ellipse. A range between the maximum spacing and half-axis range is available.

Within such possible thread contact lines, optimum heat transfer is ensured between the inlet thread guide 8 and the outlet thread guide. in a given relative position between the heating tube and the yarn 9. An increasing heat transfer takes place in the direction of yarn running.

In this example, the two opposing points of the ellipse are related to the intersection of the long and short axes of the ellipse. This means two diametrically opposed circumferential areas.

The embodiment of FIGS. 18d and ]-8e has an eccentrically arranged ring 2.

This ring 2 is circular, and the center point of the ring 2 is eccentric with respect to the center point of the heating tube 1. It is shifted by an amount of 27.

In this case, the eccentricity of all rings is on the same radial side of the shaft and common to heating tube 1. Located in one axial plane.

The inlet thread guide and the outlet thread guide are designed to accommodate one thread individually for each group. located on the bar 26, which also serves as a lint for the same action on the yarn being heated. It is rotatable in the circumferential direction relative to the center point of the ring 2.

Therefore, yarns 7, 1 and 7.2 are guided in opposite yarn running paths of the leads. ing.

This allows synchronization of the most inlet yarn guide 8 or most outlet yarn guide 9. heat flow to both yarns during the movement, over the length of the yarn exposed to the heating tube 1. In addition to this, the distribution of heat flow as well as the total amount of heat is controlled to the same extent, which is consistent with Fig. 18d. As shown in Figure 18e, which is drawn accordingly rotated by 180 degrees. , in said manner an optimal control of the heat transfer from the heating tube 1 to the thread 7 is achieved.

In the case of FIG. 18d, the yarn entering the inlet yarn guide 8 is heated by the heating tube 1. On the other hand, the running thread has a relatively large distance from the surface. This relationship is the opposite in the case of FIG. 18e.

Here, the incoming yarn is heated relatively strongly in the area of the entrance yarn guide 8; whereas the thread occupies a significantly smaller distance to the heated surface of the heating tube 1. Then, the running yarn is in the area of the exit yarn guide 9 relative to the heated surface of the heating tube. This is because it occupies a relatively large distance.

The embodiments of FIGS. 9 to 18 allow fine adaptation to the respective thread parameters of the thread. The applied heat effect is finely adjustable. Therefore, even if the count is small, the contact ratio Automatic cleaning temperature is always maintained by matching the distance between the thread and the heating tube and ring. is produced. Even if the automatic cleaning temperature is always maintained, all Damage-free heating of various types of yarn is possible.

In particular, in the present invention different counts, such as 20 denier or 40 denier Two filament yarns are processed simultaneously in the same heating tube, but the running yarn and the heating This is possible as long as the relative position between the two surfaces is appropriately adjusted.

The same one heating tube is used in all these examples to Different heat flows and target temperatures can be created on different yarn running trajectories without temperature changes or adjustments. This can be achieved by selecting the relative position between the heating tube and the heating tube. by trowel it Each yarn thickness (thickness, denier) and material (polyester, nylon), or Adaptation to the different yarn qualities desired in each case is also possible.

In the embodiments of the invention described so far, the ring 2 is added as a separate component. inserted into or tightly connected to the heating tube and forming a component of the heating tube; There is. With reference to FIGS. 19 to 22, the ring is an independent component as a whole. An example of the configuration of the system will be described. All embodiments in FIGS. 19 to 22 This applies to the case where one sleeve 33 is mounted on the cylindrical heating tube Is Rukoto. The sleeve 33 has at least a yarn running range and a yarn processing area on the contour of the heating tube. It consists of thin sheets that fit closely within the thermal range. Thin plates can be attached with springs or belts. A cylindrical segment that is clamped to a heating tube. In the embodiments of FIGS. 19 to 22, The sleeve is configured as a cylindrical tube, and the inner diameter of the tube has narrow tolerances to accommodate heating tubes. It corresponds to the outer diameter. The sleeve has a ring 2 according to the invention in the axial direction. Ru. The embodiments of FIGS. 19-22 differ from each other with regard to the configuration of the rings. vinegar Although the ribs are axially defined by guides 45, they are rotatable.

For this purpose, the sleeve has a hole 44 on its periphery, into which a suitable tool can be engaged. the sleeve is rotated. However, for the sleeve of FIG. A permanent drive may also be provided.

In the embodiment of FIG. 19, the sleeve has at least a yarn running range in a plurality of vertical planes. It is curved outward. Such curved forming is done by rolling and/or swaging. is achieved in the axial direction. As a result, a plurality of rings 2 are curved around the circumference. occurs. One or more threads are guided over the outer periphery.

This embodiment is particularly advantageous if considerable contamination of the heating tubes is expected. in this case , symmetrical sleeves on the periphery are manually or not shown at time intervals. The thread is rotated continuously and slowly by the drive device. This causes the thread to move onto the ring. constantly entraining the deposits that occur in the Therefore, the time interval for cleaning the heating tubes becomes significantly longer. Dirt entrained by the yarn is not critical to yarn quality.

In the embodiment of Figures 20 and 21, the sleeve has a number of cuts along the desired thread run. A ring is provided by forming a recess 34 in the thin plate of the sleeve. This cut The cutout 34 is a hole formed in the thin plate. This embodiment is shown in FIG. 20, FIG. 13a and 13b and expanded accordingly. To that extent, Figures 13a and fig. 13b can be referred to. However, in the embodiment of FIGS. 13a and 13b, While the ring is a component of the heating tube, in the embodiment of FIG. The groove is formed by the cutout 34 mentioned above. The notch 34 is a part of the circumference of the sleeve. It extends for several minutes.

The axially successive notches 34 provide a predetermined position along the intended central thread line. angularly offset in the circumferential direction of the sleeve. The notch 34 is square, and the square cutout 34 is square. The circumferential longitudinal edges are each located in a vertical plane. Therefore, between adjacent notches 34 A web-like ring segment remains, which is the ring segment of the present invention. Acts as ring 2 for purposes. In the embodiment of FIG. 20, there are two rows of notches 34 in front and behind. are arranged symmetrically with respect to the central axis 40 with a deviation in the direction of the opposing axes. , therefore two for each assigned inlet thread guide 8 and outlet thread guide 9. The thread is guided over a notch or ring. The circumferential extension of the notch corresponds to the thread running trajectory. Thick (chosen) so that the path can be adjusted arbitrarily.

In the embodiment of the invention of FIGS. 21a and 21b, the sleeve 33 also has one It is formed into a cylinder and is attached to the heating tube 1. In this case, the inner diameter of the cylinder has a narrow tolerance. The capacity range corresponds to the outer diameter of the heating tube. The cylinder, hereinafter referred to as sleeve 33, is axially displaced. The heating tube is secured against motion, but can be rotated on the heating tube. In this case, the rotational movement may be associated with release and locking (not shown). ing. In FIG. 21b, two threads are guided on opposite sides over the sleeve.

The grooved inlet yarn guide 8 and outlet yarn guide 9 are shown for clarity in the drawing. Not yet. Accordingly, the thread does not form a spiral line created during operation. rather, they are shown schematically parallel to the axis. However, for the thread guide, What has already been said before applies. In this regard, in particular the description of the embodiment of FIG. is shown.

The embodiment of FIGS. 21a and 21b has the following peculiarity: the cutout 34 is rings located in a row parallel to the axis of the heating tube 1 and having the same width between themselves; It forms segment 2. When the sleeve 33 is rotated on the heating tube 1, Therefore, it is possible to run the yarn 7 in a clean area extending around the web 32. can and therefore self-cleaning effect occurs based on the above mentioned temperature conditions of the web. is further increased. One row of identically formed notches 34 diametrically It is located within the yarn running trajectory of the second yarn 7 opposite to the notch 34 .

Next to the row of square cutouts 34 in the circumferential direction, another row of cutouts 35, here trapezoidal, is arranged. It is placed. This notch forms a wedge-shaped ring segment 38 between itself. are doing. Trapezoidal notches of the same arrangement for the second thread diametrically opposite this row 35 or wedge-shaped ring segments are located. This allows the heating table to The length of the surface in contact with the thread can be changed simply by rotating the sleeve 33 on the heating tube 1. Ru.

Next to the row of trapezoidal notches in the circumferential direction, another row of parallel notches 36 is located. Ru. In this case, the notch is a relatively narrow notch in the axial direction and therefore its own A wide ring segment 2 is left in between, which rings segment is connected to the yarn running web. This provides a large contact surface for the thread 7. The place of notch 36 corresponds to another notch. In this case, the notches 36 in the axially opposite row define the corresponding ring segments. FIG. At 19 the sleeve is shown unfolded and enlarged. Each notch is the same have the same shape and are spaced at the same distance from each other. Ring segment between notches is located and the ring segments extend circumferentially. Circumference of sleeve 34 The connecting webs left between each row of notches in the opposite direction provide the rigid structure of the sleeve. is important for heat distribution and affects uniform heat distribution.

The sleeve circumferential wall has a thickness of 0.1 mm (substantially Q, 3 mm) to 5 mm, preferably 0.1 mm. It has a thickness of 5 mm to 0.3 mm. Therefore, in this example as well, heating The radial distance between the circumferential surface of tube 1 and the surface of the ring segment is in front of the ring height. Corresponding to the dimensions mentioned above, and from 0, Lmm (substantially 0.3mm) to 5mm, yes The advantage lies in the considered advantageous range of 0.5 mm to Q, 3 nm.

The sleeve 33 may be provided with a cutout of another shape to meet the working conditions; A suitable cutout satisfies other desired working conditions.

The sleeve is an economical component that is easily assembled, disassembled and replaced. Cut The shape of the notch and therefore the structure of the ring or ring segment depends on the structure of the sleeve. Not restricted within. Therefore, this embodiment has the advantage that the shape of the sleeve is contact ratio (width of ring segment/width of notch in yarn running direction, respectively), number of rings and usage examples related to distribution (yarn count, yarn running speed, yarn material, target temperature) , degree of twist, etc.).

The embodiments of FIGS. 22a and 22b have in common that the yarn running web or ring 2 is The holding sleeve is composed of a tubular cut piece 33.

Succeedingly in the axial direction (the cut pieces are pushed telescopically in and out in both embodiments) I'm trapped. For this purpose, the outer diameter of one cut section is the same as that of the other cut section. Compatible with narrow tolerance dimensions for inner diameter. The cut piece is inserted into the heating tube 1.

In the embodiment of FIG. 22a, the cutting sections 33 each have a larger diameter axial section 33a. and a small outer diameter axial section 33b, in which case the small outer diameter This corresponds to the inner diameter of the larger diameter axial section 33a. Advantageously large diameter The inner peripheral surface of the axial section 33a and the outer periphery of the axial section 33b with a small outer diameter. A thread G is formed in the surface, by means of which the individual cut pieces are connected to each other. case In some cases, the threaded connection may be secured by a locking nut K, which prevents the cutting. The position between the fragments is precisely adjusted.

A ring 2 is provided on the outer periphery of each large-diameter axial section 33a.

The embodiment shown in Figure 22b sequentially intersects a small diameter cut and a large diameter cut. This differs from the embodiment of FIG. 22b by the mutual arrangement. on the inside The outer diameter of the located cut piece corresponds to the inner diameter of the outer cut piece. cut piece are connected to each other via male or female threads G, and in some cases may be stopped. They are secured in position relative to each other using nuts K. Large diameter cut pieces are circumferential. Each surface is equipped with a ring that serves as a thread guide, in this case ring 2 is a thread guide. The width is shown increasing in the axial direction of the rib.

The same applies to this embodiment as described in the other embodiments. Especially the ring The configuration may be based on the regulations described in the ninth to twelfth embodiments.

According to the invention (the heating tube is advantageously used in a false-twisting and crimping machine. ・The crimping machine is described in, for example, Federal Republic of Germany Patent Application Publication No. 3719050. It has multiple supply reels from which the yarn is unwound, a heating device for heating the yarn, and a A cooling device for cooling the yarn, a false twisting device that gives a primary twist to the yarn, and a supply of the yarn. Inlet and outlet delivery devices that pull from reels or from false twisting devices? It consists of The thread is then wound onto a take-up bobbin. Everything based on this invention All heating tubes are used in particular as heating elements arranged in the false-twisting area.

Furthermore, as shown in FIGS. 23 and 24, an inlet yarn guide 8 and an outlet yarn guide 9 are movable in the circumferential direction of the heating tube 1 relative to each other or synchronously. Itoga The movement of the id is caused by a stepping motor 23. The heating tube can also be selectively rotated. be turned over. The heating tube has a ring, and the ring has the embodiments shown in FIGS. 9 to 12. It is structured based on. Optionally, the heating tube is the sleeve of FIG. 20 or 21. It is good to be surrounded by In both cases, the configuration of the ring depends on the contact ratio and/or heating surface. The height of the rings may vary by the same amount or by different amounts for all rings. It's becoming a sea urchin.

In the false twist crimp machine shown in Fig. 23, the rotation of the artificial yarn guide 8 and the exit yarn guide 9 is is carried out by means of a stepper motor 23 in relation to the yarn temperature measured at the outlet of the heating tube. It will be done.

For this purpose, a temperature sensor 22 is arranged in the outlet area of the heating tube 1. The server supplies the output signal and engraves (no change in content) control or adjustment is carried out and the output signal provides an optimum output signal over the entire length of the thread. The motor 23 is controlled so that the inlet yarn guide 8 and the outlet yarn guide 9 are temperature-related. will be moved.

It is also possible to superimpose a yarn tension signal on the measurement signal of the temperature sensor 22, and the yarn tension signal is also measured here by a tensile force measuring device 24 downstream of the heating tube. .

Optionally, the embodiment of FIG. 24 is used. This false twist crimping machine uses friction false twisting. On the downstream side of the device 20, the thread tension is measured by a tensile force measuring device 24. entrance The step motor that controls the yarn guide 8 and the exit yarn guide 9 is equipped with a tensile force measuring device. The heating tube is controlled by the output signal of the heating tube 24 and is actuated in the circumferential direction of the heating tube. in process The yarn pulling force generated by the frictional false twisting device downstream of the cooling It is a measure for all process parameters that define yarn quality. heat transfer and By moving the yarn running trajectory around the heating tube to control the target temperature of the yarn. to keep the yarn tension constant within limits downstream of the friction false twisting device. I can do it. If this limit is exceeded, other process parameters may be post-adjusted to or must be corrected. In connection with FIGS. 23 and 24, based on the present invention (additional An advantage in false twist crimp machines with heating tubes is that the heating tubes can be applied to the yarn in each case. Heat transfer can be fine-tuned to optimize the process, as well as accurate side thread temperature characteristics are achieved.

Fi6. 7 Fig, 8 FIG.9 “IL+, IC+ Procedural amendment (formality)

Claims (29)

[Claims] 1. A heating member for heating a running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). is guided over the web along the heated surface (heating surface) and at a predetermined distance. in which the web is placed on a heated surface. , the heating surface is an outer peripheral surface curved in the transverse direction with respect to the axial direction of the tube (heating tube 1). , the web is formed by ring segments (2), and the web is formed by ring segments (2). is attached to the heating tube (1) and covers at least one circumferential direction of the heating tube (1). A thread guide (879) is arranged at the starting end and the terminal end of the heating tube. The thread guides are offset from each other in the circumferential direction of the heating tube, and the The thread travels within the steep helical line in contact with the outer contour of the ring segment and only while being guided along the heating tube without coming into contact with the outer circumferential surface of the heating tube. A heating member for a running yarn, characterized in that: 2. The ring segment (2) has a raised portion ( 2. The heating element according to claim 1, wherein the heating element is configured as a spiral. 3. The ring segment is formed by multiple recesses (notches, grooves), and the recess is formed into the heating surface and extends over a portion of the circumferential direction of the heating tube. have a limited length in the axial direction and are successive, in this case the axial The web serves as a ring segment for thread guidance between two adjacent recesses in is left and the recess is 0.1 to 5 mm deep, preferably 0.5 to 3 mm deep. The heating member according to claim 1, comprising: 4. A heating member for heating a running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). is guided over the web along a heated curved surface (heating surface) and at a predetermined distance. type in which the web is placed on a heated surface. In this case, the ring segment is formed by multiple recesses (notches, grooves). a recess is machined into the heated surface and has a limited axial length; successively, in this case between two axially adjacent recesses for thread guidance web is left with a recess of 0.1 to 5 mm, preferably 0.5 to 3 mm. A heating element for a running yarn, characterized in that it has a depth of . 5. A heating member for heating a running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). is guided over the web along a heated curved surface (heating surface) and at a predetermined distance. type in which the web is placed on a heated surface. at a height of 0.1 to 5 mm, preferably 0.5 to 3 mm, relative to the heated surface. and preferably formed by several recesses (cutouts, grooves). a recess is machined into the heated surface and has a limited axial length; successively, in this case between two axially adjacent recesses for thread guidance A heating member for a running yarn, characterized in that a web of is left behind. 6. The ring segment is formed by a ring-shaped component, and the component The inner contour, i.e. the inner circumference, has narrow tolerance dimensions and corresponds to the outer contour, i.e. the outer circumference, of the heating tube. and is inserted onto the heating tube with an axial distance (spacer 3), The thickness of the component protruding from the heating surface (difference in radius between outer and inner circumference) is at least also 0.1 mm, but a value not exceeding 5 mm, advantageously 0.5 mm, but 3. The heating member according to claim 1, wherein the heating member has a value not exceeding 3 mm. 7. A ring-shaped component (2) has a radial slit (5) between the inner and outer circumferences. and the radial slit (5) has a width at least as wide as the diameter of the heating tube (1). radial slits in the axially adjacent components. is a spiral line that guides the yarn along the heating tube at a predetermined angle around the heating tube. 7. The heating member according to claim 6, wherein the heating member is shifted in the direction. 8. A pin extending axially on one side as a spacer (3) of each component (2) a cutout (4) is arranged on the other side, in which case advantageously The cooperating pins and notches of axially adjacent components form radial slits (5 ) are shifted by a predetermined angle around the heating tube relative to The radial slit (5) of the component (2) corresponds to the helical line of the thread. 8. The heating member according to claim 7, wherein the heating member is located substantially on the swirl line. 9. The spacers (3) of two axially adjacent components (2) are arranged in a pattern. The pattern has a plurality of recesses in each component (2), i.e. Arrange the notch (4) on one circle that is concentric with respect to the heating tube with a predetermined angle deviation. The heating member according to claim 8, wherein the heating member is configured by: 10. An elastic curved member (10) is movable between the sides of the radial slit (5) The ring (2) is elastically in contact with the outer periphery of the heating tube (1) in a central region. According to any one of claims 7 to 9, the heating tube is configured to be tightened to the heating tube. heating element. 11. A laminar sleeve (33) matches the heating surface of the heating tube and the ring segment (2) is formed by a curved part; The curved molded parts are arranged in parallel at intervals in the axial direction, and the sleeve 2. Heating element according to claim 1, wherein the tube is preferably rotatable in the circumferential direction of the heating tube. 12. A heating member for heating the running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). ) is guided over the web along the heated surface (heating surface) and at a predetermined distance. For those types in which the web is placed on a heated surface. The thin plate-shaped sleeve conforms to the shape of the heating tube and is tightened to the heating surface. In this case, the web is formed by a curved molded part, and the curved molded part is attached to the axis of the sleeve. Heating for running threads, characterized in that they are spaced apart in parallel in the direction Element. 13. A laminar sleeve (33) matches the heating surface of the heating tube and the ring segment is formed by the notch (34). The notches are machined into the wall of the sleeve and arranged in parallel at intervals in the axial direction. and extends over at least a portion of the heating tube in the circumferential direction, and is controlled in the axial direction. It has a limited length and is one after the other, where two axially adjacent A web is left between the notches that serves as a ring segment for thread guidance. , the thickness of the lamina of the sleeve is preferably at least 0.1 mm, but preferably 5 mm. preferably not more than 0.5 mm, but preferably not more than 3 mm. The heating member according to claim 1. 14. A heating member for heating the running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). ) is guided over the web along the heated surface (heating surface) and at a predetermined distance. For those types in which the web is placed on a heated surface. and a laminar sleeve conforms to and is secured to the heating surface. In this case, the web (2) is formed by a cutout, the cutout being in the wall of the sleeve. Machined, axially spaced parallel, axially limited lengths and are successive, in which case there is a thread between two axially adjacent notches. A web is left that serves as a ring segment for guidance and advantageously The thickness of the rib groove plate is at least 0.1 mm, but does not exceed 5 mm. , advantageously having a value of 0.5 mm, but not exceeding 3 mm. A heating element for the running thread. 15. a plurality of cut pieces (33a, 33b) with sleeves adjustably coupled to each other; , the cut pieces being inserted into and out of each other, preferably telescopically. The heating member according to any one of claims 11 to 14. 16. Yarn guides (inlet yarn guide 8, outlet yarn guide 8, A thread guide 9) is provided, and the thread is guided through the thread guide along the helical line to the ring assembly. The yarn guides are guided around each other in the circumferential direction of the heating tube. A heating element according to claim 1, which is relatively movable and positionable. 17. Multiple yarns are guided on the heating surface of the heating tube, and each yarn travel trajectory A claim in which an entrance thread guide (8) and an exit thread guide (9) are arranged on each path. The heating member according to item 1. 18. When two threads wind in opposite directions and the distance changes in the circumferential direction so that they are spaced apart and guided over the heating tube with a wrapping angle less than 180°. , in which case the heating tube is preferably surrounded by an insulating jacket, the insulating jacket has a narrow insertion slit extending parallel to the axis of the heating tube; Claim 17: The insertion slit is located between both yarn running paths when viewed in the circumferential direction. The heating member described. 19. The width of the circumferential variation of the ring segment to the possible contact range with the thread (contact length) ), which are arranged at the heating tube and at the yarn inlet and yarn outlet of each yarn heating area. A thread guide (inlet) guides the thread (7) along the helical line onto the ring segment The yarn guide 8 and the exit yarn guide 9) are movable relative to each other in the circumferential direction of the heating tube. contact ratio (one Thread contact length in a ring segment/contact length adjacent to this ring segment Claims 1 to 18, characterized in that the quotient (consisting of lengths of yarn with no length) is adjustable. The heating member according to any one of the items. 20. A heating member for heating the running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). ) is guided over the web along the heated surface (heating surface) and at a predetermined distance. The web is placed on a heated surface (yarn heating area). type, the web is placed in the range of possible contact with the yarn, transverse to the yarn running direction. It has a width (contact length) that changes in the direction, and the heating tube and the yarn entry in the yarn heating area A thread guide (inlet The yarn guide 8 and the exit yarn guide 9) are arranged relative to each other in the transverse direction to the yarn running direction. movable and positionable, thereby increasing the contact ratio (one The quotient consisting of the contact length of the yarn in the web/the non-contact yarn length adjacent to this web. ) is adjustable for a running thread. Material. 21. The ring segments have a height that varies circumferentially in the range of possible contact with the thread. The yarn (7) is arranged at the heating tube and at the yarn inlet and yarn outlet of each yarn heating zone. A thread guide (entrance thread guide 8 , the outlet yarn guides 9) are movable and positioned relative to each other in the circumferential direction of the heating tube. possible, which allows the connection between the heating surface in the ring segment and the yarn running path to Any one of claims 1 to 20, wherein the distance between the two is adjustable. Heating member included. 22. A heating member for heating the running thermoplastic thread (7), the heating member heating the running thermoplastic thread (7). ) is guided over the web along the heated surface (heating surface) and at a predetermined distance. The web is placed on a heated surface (yarn heating area). type, the web is placed in the range of possible contact with the yarn, transverse to the yarn running direction. It has a height that varies in the direction of the heating tube and the yarn inlet and yarn outlet of the yarn heating area. Yarn guides (inlet yarn guide 8, outlet yarn guide The yarn guides 9) are movable and positioned relative to each other in the transverse direction with respect to the yarn running direction. The distance between the heating surface and the thread running path in the web can be determined by Heating section for running threads, characterized in that the spacing is adjustable Material. 23. the outer contour of the ring segment is at least partially approximately elliptical; The center point of the circle is on the axis of the heating tube, and advantageously the two threads are located at opposite points of the ellipse. 22. The heating member according to claim 21, wherein the heating member is guided at a lead angle in the same direction. 24. The ring segment is located eccentrically with respect to the axis of the heating tube, which advantageously is the axial plane in which the two threads are located, respectively, at the center point of the ring segment of the heating tube. It is designed to be guided with opposite lead angles on one side and on the other side. 2. The axially adjacent ring segments are offset from each other by 180°. 1. The heating member according to 1. 25. The ring segments that follow one after another in the axial direction on the heating tube run almost like threads in the circumferential direction. The addition according to any one of claims 19 to 24, which is offset in the direction of the line. thermal components. 26. The heating tube, the inlet yarn guide (8) and the outlet yarn guide (9) are located at the outlet of the heating member. are movable relative to each other in relation to the measured yarn temperature, and the yarn temperature is lower than the contact ratio. or by changing and adjusting the spacing between the thread and the heating surface to approximately the desired target value. 26. Heating element according to any one of claims 19 to 25, maintained in a tank. 27. The heating tube, the inlet yarn guide (8) and the outlet yarn guide (9) are on the downstream side of the heating member. are movable relative to each other in relation to the yarn tension measured at or by varying and adjusting the spacing between the thread and the heating surface to approximately the desired target value. 27. Heating element according to any one of claims 19 to 26, which is maintained in a static manner. 28. The heating tube has different contact ratios of ring segments over its axial length. The heating zone preferably has an inlet section and/or an outlet section, so that the yarn is Increased distance to the outer circumference of the heating tube compared to the central adjustment section (5 mm on the larger side) ) and/or with a significantly reduced contact ratio (lower than 0.1). 28. A heating member according to any one of claims 1 to 27. 29. The heating tube is built into the false twist crimp machine and is delivered upstream of the heating tube. equipment is located and downstream there is a cooling area, in particular cooling rails, friction false twisting equipment. and a delivery device according to any one of claims 1 to 28. heating element.