EP1060302B2 - Yarn processing device and use thereof - Google Patents

Description

Technical area

The invention relates to a yarn treatment device with a preferably releasable screw connection of divided treatment bodies, consisting of highly wear-resistant, in particular of ceramic Material exist, also the use of the same.

State of the art

The treatment of continuous filament yarn has especially two tasks. For one thing the yarn made from industrially produced filaments, a textile character and also textile technology Properties are given. The second is the Yarn with regard to specific quality characteristics for the further processing and / or for the final product treated. Partly yarn qualities have to be produced which are those produced with natural fibers Products not necessary and not available are. The application areas are in industrial Processing textiles e.g. for the construction sector, the Automotive engineering, but also for carpet production and for special textile products in the context of sport and sports Leisure industry. Furthermore, spun yarn should certain preparations for the best possible industrial Processing handled and the processing process optimized for yarns and fabrics. Optimization here means conservation or enhancement certain quality criteria and lowering the Production costs, resulting in downtime all over Includes processing path.

As part of the filament spinning are different Treatments, so the preparation and the Finishing of yarn via yarn treatment nozzles important section. The structural change of plain yarn to a textured or swirled yarn is through caused mechanical air forces, wherein in the first Trap an air flow in the supersonic range and in the second case a double vortex flow is generated. Air treatment nozzles are used to improve the Structure of a yarn used. A very demanding Process is improving quality through a treatment with hot steam e.g. for relaxing as part of a stretching process, or after one other previous procedure intervention. in In all cases, the nozzle bodies are made of highly wear-resistant Material produced, otherwise their Life would be too short. The main problem source for Garnbehandlungsdüsen is in the preparation. there is the yarn immediately after the spinning process, or the production of individual filaments, with Protective materials provided. The protective substances should be one Help for subsequent processing. The for the Preparation used substances give a oelige sliding property, so that the sliding friction of the Garnes over the whole process of processing as possible remains deep, the risk of damage or a Garnbruches reduced, and the abrasion of the Sliding surfaces of transport and processing plants be kept as small as possible. There is but a whole bunch of other factors which by the preparation or the preparation agent are favorably influenced, e.g. electrical charges. A wide area is the protection against fungal attack of yarn during storage, between the different processing stages. Already the addressed Factors already give an impressive Picture about the practice conditions for yarn treatment bodies. The interaction of pressure, heat, Moisture and a variety of chemical substances in the preparation locally cause very aggressive Conditions for the material of the yarn treatment nozzles, above all, however, also for each connection means at the nozzles. The new solution is aimed especially on the genus of shared, especially of two-part yarn treatment nozzles, each of which is preferred Part recesses has, be it for one Garnkanal or a treatment chamber. When joining the parts should fit exactly. Further should be lateral sliding movements in relation to the Yarn run for accurate positioning as possible avoided become.

Presentation of the invention

The invention was based on the object, Garnbehandlungsdüsen or Garnbehandlungskörper to develop that are as insensitive as possible in relation allow for preparation and a long life. It was particularly part of the task, a nozzle connection for split yarn handling wares too create a fast and precise positioning allowed, and for highly wear-resistant materials like ceramics, also suitable for thermal treatments is.

The inventive solution is characterized characterized in that the connection of split nozzles has at least one dowel pin, which at least in a first body part with mechanical Clamping or holding means held, and in one second is guided by a fitting hole, for positioning and assembly / disassembly in the axial direction the passport connection.

It has been recognized by the inventors that a Nozzle with connecting means only reliable Remains when the nozzle, pressure, heat, steam or chemical Substances can withstand. By means of the previous glue connections could not satisfy all practice problems satisfactorily be solved. Glue connections can Moreover, they are examined only insofar as the practical conditions already known. A glue connection but can not be determined in its composition will be unknown in view of the attack, future chemicals in use, if necessary with additional heat and moisture. The new solution is preferred Connecting means in a common orientation, preferably arranged in alignment with the yarn run. Surprisingly, at a corresponding Pin connection to be determined that with it the prior art, the whole nozzle body considerably smaller, as if miniaturized Shape can be built. Especially when using a double nozzle, or several nozzles next to each other, the division is between two adjacent ones Yarn runs much smaller than before. In some applications, this even has a retroactive effect on the godet size. On one and the same Machine size can be reduced by the possibility of miniaturization, thanks to the new connection, additional Yarn runs provided and accordingly the overall performance the machine can be increased. This means, that otherwise used rather in the watch technology Connecting means as assembly / disassembly aid as well as the linear application unexpected benefits brings. The powerful cohesion of the parts can, as in the prior art through a classic Screw connection can be ensured. The new Solution is especially when used as Verwirbelungsdüse and as thermal treatment bodies and, as will be shown, very advantageous as a migration nozzle.

The invention allows a whole number especially advantageous embodiments. It gets up to it claims 2 to 12, reference is made. In two too connecting parts are according to a particular preferred solution used two dowel pins. Therefore on the one hand, are essentially identical Mating holes and on the other hand a mating hole as well a slot-fitting hole attached. It will taken into account that the highly wear-resistant Materials, especially ceramics, not only very much difficult in editing, but in terms of Temperature influences in relation to metallic Materials have different dimensions. The clamping means or holding means for the dowel pins may be a tension spring or an open tension ring. For this purpose, it is proposed to the dowel pins for each one Clamping ring to install a corresponding groove such that the clamping ring diameter during the Assemble and disassemble the dowel pins through a external force effect is reducible. It is further possible, instead of a tension spring a section of Pins, e.g. can be compressed by different hardness form so that a mechanical compression instead a tension spring within a hole enlargement is usable. Preference is given to the dowel pins miniaturized in diameter or needle-shaped. The dowel pin primarily has a positioning function. For positioning, the Passtift must be dimensioned only so strong to help him with the assembly of the parts is not damaged during the yarn processing process come on the dowel pins, hardly forces on. The power connection is preferably via a screw connection. According to another embodiment is at the nozzle body, at the dowel pin is held with the clamping means, a Insertion cone mounted in an undercut or a bore extension for the clamping means or a Clamping ring transferred as a holding shoulder, for longitudinal positioning of the dowel pin. The new solution is suitable also excellent in terms of periodic cleaning, which is often done with ultrasound.

The treatment body is in two parts Design designed as a nozzle plate and cover plate, wherein the dowel pins with the clamping means in the Nozzle plate preferably rotatably fixable are. For this purpose, the cover plate has a blind hole or a through hole with a slightly enlarged Diameter at the bore end and a Mating hole for the dowel pin in the bore entry part on. Particularly preferably, the compound consists of two dowel pins, which also in the assembled state have very little play in the pilot hole, so, that the Passtifte at least theoretically rotatable stay. It is also possible to use the dowel pins one side of a nozzle body slightly protruding, such that the nozzle body legoartig on a Base plate and also in any number of attachable are. The application of two dowel pins has the big advantage that the connection in terms of the Positioning geometrically accurate or in a narrow Tolerance range is determined. This is true in use from just a dowel then to if the Screw connection itself has a passport shoulder. When using more than two dowel pins can Disadvantages arise in relation to the problem expansion and manufacturing accuracy. This means, being aware of extreme thermal stresses two dowel pins are preferred. Is against no or only a small thermal load given, You can use two or more dowel pins become. In the vast majority of applications at least one nozzle part, but preferably both Nozzle parts of ceramic material and the Dowel pins made of high-strength steel or ceramic. The invention further relates to the use of the yarn treatment device. For this purpose, the claims 13 and 14, reference is made. Be for pens on both Side mechanical clamping means provided, then should clamp one side much weaker, so the pen remains in a defined part.

Brief description of the invention

die Figur 1 a

einen Garnbehandlungskörper im Schnitt in Explosionsdarstellung und

die Figur 1 b

die Figur 1 a in zusammengebautem Zustand;

die Figur 2a

eine Verwirbelungsdüse als Schnitt III-III der Figur 2b;

die Figur 2b

einen Schnitt IV - IV der Figur 2a;

die Figur 3

eine Anordnung mit verschiedenen Passstiften und Bohrungen;

die Figur 4a

die Nutzung der Stiftverbindung auch am Maschinenständer;

die Figur 4b

eine weitere Möglichkeit der Anordnung;

die Figur 5a

eine Dampfbehandlungsdüse als Schnitt I - I der Figur 5b;

die Figur 5b

eine Doppeldüse mit Dampfkammern als Schnitt II - II der Figur 5a;

die Figur 6

ein Übersichtsblatt mit verschiedenen Verfahrensschritten;

die Figur 7

eine Präparation mit anschliessender Migrationsdüse, je im Schnitt.

In the following, the new solution will be explained with reference to several embodiments with further details. It shows in a strong enlargement:

Figure 1 a

a Garnbehandlungskörper in section in exploded view and

Figure 1 b

Figure 1 a in the assembled state;

Figure 2a

a swirl nozzle as section III-III of Figure 2b;

Figure 2b

a section IV - IV of Figure 2a;

the figure 3

an arrangement with different dowel pins and holes;

the figure 4a

the use of the pin connection also on the machine stand;

Figure 4b

another possibility of arrangement;

the figure 5a

a steam treatment nozzle as section I - I of Figure 5b;

Figure 5b

a double nozzle with steam chambers as section II - II of Figure 5a;

the figure 6

an overview sheet with different process steps;

the figure 7

a preparation with subsequent migration nozzle, each on average.

Ways and execution of the invention

Figures 1a and 1b show a two-part air treatment body 1 in section, the figure 1a in the sense of an exploded view. The treatment body consists of a nozzle plate 3 and a cover plate 2. Both parts are rigidly connected by a screw 4 to the air treatment body 1 (Figure 1b). For exact positioning, in particular as an assembly / disassembly aid, the nozzle plate 3 and the cover plate 2 with two dowel pins 5, 5 'against displacement in a plane (in Figure 1 b with X - X) secured according to arrow 6. The illustrated dowel pins 5, 5 'have a double function in the illustrated example. They serve in addition to the positioning of the nozzle plate and cover plate to each other and the local fixation of the entire air treatment nozzle 1 to a processing machine not shown 7. The dowels 5, 5 'are already mounted at the manufacturer in one of the nozzle parts. It is important that is not supported on a glue, weld or solder joint, but that the mechanical clamping means give the anchorage in the material of the air treatment body. Lv is the air treatment side of the two parts designated, with Mm the machine mounting side. The dowel pins 5, 5 'have a fitting shank 8 and a striking end 9. A tension spring or tensioning ring 10 represents the mechanical clamping means. For the tensioning ring 10, an undercut 11, which is approximately like shape relative to the tensioning means, is attached in the nozzle plate 3 following an insertion cone 12. The insertion cone 12 facilitates automatic assembly of the dowel pins. The nozzle plate 3 has two fitting holes 13. The dowel pin 5 can also be inserted by hand into the through hole 14 until the clamping ring 10 is present at the constriction of the insertion cone '. The rest of the movement for the insertion of the dowel pin 5 can with a slight Schlagz.B. take place by means of rubber hammer, so that the tension spring 10 jumps into the relief grinding. In the assembled state, the dowel pin 5 protrudes on both sides, as with P _D (positioning nozzle parts) and PM (positioning on machine) is designated. The counterpart to the nozzle plate 3 is the cover plate 2, which has at an identical distance A corresponding to two axially parallel fitting holes 15 and 16. The fitting bore 15 may be a normal cylindrical bore with diameter D, while the second is preferred as a slot D _L with some longitudinal play in the direction of the dimension A for the expansion of the body under heat. The assembly of both parts 2, 3 happens for the first time at the manufacturer. In user operation, for example, for a cleaning of the parts after loosening the screw 4, the parts can be taken apart in the axial directions of the dowel pins. Another major advantage of the proposed solution is that the subsequent recycling improved by the easy separability of the parts and each material is processed separately. This is also important because the yarn treatment nozzles are wearing parts.

FIGS. 2a and 2b show a special shape of a yarn channel 20 for the swirling of yarn with compressed air or otherwise a medium. With D _L the location for a compressed air connection is marked, wherein the compressed air of eg 1 to 6 bar is introduced via a Druckluftzuführbohrung 21 in the yarn channel 20. Preferably, the two dowel pins 5, 5 'are arranged on a common straight line 22 (VE) together with the screw 4. As a result, the fit connection and the power connection is optimal, and allows a particularly narrow pitch for the yarn run (as can be seen from Figure 5b).

FIG. 3 shows further design options for the pin connection. On the right side of the figure survives the dowel pin 5 'according to the figure 1. The pilot hole 15, ends with a blind hole 30, the defined design of the pilot hole 15 serves. On the left side of the picture is the dowel pin 5 as a second variant in the area of the impact point flush with the appropriate nozzle part. Instead of a Blind hole 30 is a through hole 30 'drilled Service. Depending on the requirement, one or the other, or both can be used on the same nozzle. Out the variations shown is another big advantage recognizable. The two main bodies of the yarn treatment nozzles are made of a highly wear-resistant and very expensive material, especially ceramics, produced. The holes or seats for the Clamping means can in terms of diameter and Diameter ratios standardized or automated getting produced. The dowel pins can against it as low-priced Decoltageteile in different lengths be fabricated for the particular application.

FIG. 4a shows the positioning of a two-part nozzle body 1 or 40, and the local Fixation on a machine 7. Figure 4b shows Example, as on a base support 7 two Garnbehandlungskörper 1 and 40 are mounted in mirror image can.

Figures 5a and 5b show a thermal treatment body 40 of the two flow chambers 41, 41 a, especially for the treatment of yarn with hot steam or hot air. Each flow chamber has a yarn inlet 42, a yarn outlet 43, and a medium supply port 44 in the central region. If the medium is hot steam, the disadvantage of today's very high yarn transport speeds as a disadvantage together with the preparation on the yarn is extremely aggressive conditions. The particularly interesting feature of the example shown is that the two flow chambers or steam chambers have a considerably large longitudinal dimension KL, which is dependent on the working process, or must be determined on a case-by-case basis. As can be seen from FIG. 5 b, the yarn treatment body 40 has not just one but two flow chambers 41 and 41 a. With the new design of the connecting means, the two chambers can be built very close to each other. If many parallel yarn runs are required, this is particularly advantageous because it allows the pitch T between two adjacent yarn runs to be made extremely small. The dowel and bolt connection is preferably mounted on a line 22 parallel to the yarn path. In FIG. 5b, a further yarn treatment nozzle is indicated by dash-dotted lines, with one yarn path each being marked with f ₁ f ₂ , f ₃ . The illustrated treatment body 40 is symmetrical, so that the thread running direction plays no role. The medium supplied via the feed opening 44 can leave the continuous steam chamber via the yarn inlet 42 and the yarn outlet 43. If only a single steam treatment position is in use, the amount of steam is still small, and can flow into the room. However, if many steam positions are used in the same room, the hot steam from the flow chamber 41, 41 a must be collected and discharged. This can be done via steam outlet holes 44, 44 'and a steam manifold 45. Advantageously, one or more positions are surrounded by a common vapor collection housing 46. A very important aspect is the medium guide in the flow chamber and also from the flow chamber. The characteristic feature of a classic yarn finishing nozzle is that the compressed air is bundled into the yarn channel as a strong jet of air, producing a very specific flow. Completely different is the situation with the new, thermal treatment body. Here, a beam effect should be avoided. In FIG. 5b, the chamber length is denoted by KL and the length of the medium supply opening 44 is designated by DZL. The length DZL is more than one third of the length KL in the illustrated example. The steam supply can also be done via several holes. It is important to avoid any directional radiation effect by the thermal medium in the thermal treatment, be it hot air, hot steam or any hot medium mixture, which may also contain, for example, spin finish.

Th. Vor.

bedeutet thermische Vorbehandlung evtl. nur mit Garnerhitzung.

G.mech.

bedeutet Garnbehandlung mit der mechanischen Wirkung einer Druckluftströmung (Überschallströmung).

Th. Nach.

bedeutet thermische Nachbehandlung mit Heissdampf (evtl. nur Wärme bzw. Heissluft).

In the following, reference is now made to FIG. 6, which shows an overview of different refinement levels. On the left part of the picture, a texturing process is shown from top to bottom and a swirling process is shown to the right of it. For the texturing process reference is made to WO97 / 30200. Smooth yarn 100 is fed from above via a first delivery mechanism LW1 with a high transport speed V1 to a texturing nozzle 101 and through the yarn channel 104. Via compressed air channels 103, which are connected to a compressed air source P /, highly compressed air is injected at an angle in the direction of transport of the yarn into the yarn channel 104. Immediately thereafter, the yarn channel 104 is conically opened so that in the conical section 102, a supersonic flow, preferably with more than Mach 2, sets. The shock waves generate, as described in detail WO97 / 30200 in detail, the actual texturing. The first section from the air infeed point 105 into the yarn channel 104 to the first section of the conical extension 102 serves to loosen and open the plain yarn so that the individual filaments are exposed to supersonic flow. The texturing takes place depending on the level of the available air pressure (9 ... 12 to 14 bar and more) either still within the conical part 102 or in the exit area. There is a direct proportionality between Mach number and texturing. The higher the Mach number the stronger the impact and the more intense the texturing. There are two critical parameters for the production speed: first, the desired quality standard and, secondly, the slagging, which leads to the collapse of the texturing as the transport speed is further increased.

Th.

means thermal pretreatment possibly only with Garnnerhitzung.

G.mech.

means yarn treatment with the mechanical effect of a compressed air flow (supersonic flow).

Th. After.

means thermal treatment with hot steam (possibly only heat or hot air).

FIG. 7 shows a detail of one Yarn treatment, leaving the chemical preparation on the left and a migration is shown on the right. The yarn 100 'comes directly from a spinning process and will passed over a preparation device 120, which a base 121, in which a feed channel 122 for the preparation from bottom to in the area of the yarn path is guided and with the so-called Preparation lips 123 ends. On the Preparation lips are U-shaped two guide webs 124 arranged, which the yarn 100 'laterally over the Guide preparation lips 123. The main body 121 preferably has a curved guide groove 125, such that the thread running gently over the point of Contact the yarn 100 'with the preparation is forced. The order of the preparation on the yarn takes place in the manner of a Mitreisseffektes. Because in the feed channel 122, the spin finish only to the extent that it is under pressure, as a sure Nachfliessen is guaranteed, it is not possible to use all the filaments the game evenly. The episode is that the gam is not enough over the preparation lips provided homogeneously with the spin finish can be. Depending on the type of preparation Dries the partly one-sided applied spin finish film rapidly, so the effectiveness is reduced remains. The inventors have now recognized that This problem can be solved by that the yarn 100 'shortly after preparation at a distance FA subjected to a more intense air vortex flow becomes. As optimal has a double vortex flow proved that a good mixing of the preparation preparation in the whole yarn composite and at the same time a crossing of the filaments in the thread generated. As a rule, swirl nodes should be used be avoided. The migration nozzle aims in relation on a whirl only half the work. The Yarn is opened by the double vortex flow and the individual filaments are crossed against each other.

Claims (14)

1. a) Yarn processing device with a detachable screw connection

   b) of separate processing members,

   c) which are made of highly wear resistant ceramic material

   d) and may be rigidly connected using a screw,

   characterised in that

   e) the connection comprises at least one alignment pin (5, 5'),

   f) which is held in a first member component (3) by mechanical clamping means (10)

   g) and guided in a second member component (2) through an alignment hole (13) and is fixable so as to be rotatable,

   h) for positioning and assembly/disassembly in the axial direction of the alignment pin connection.
2. Yarn processing device according to claim 1, characterised in that the connection comprises two axially parallel alignment pins (5, 5').
3. Yarn processing device according to claim 1, characterised in that the connection comprises at least one screw connection (4) and at least one or two axially parallel alignment pins (5, 5'), the connecting means being arranged in a line parallel to the thread course in the processing member.
4. Yarn processing device according to any of claims 1 to 3, characterised in that a substantially identical alignment hole (13) is provided in each of the two processing members themselves to be connected and a second alignment hole designed as a slot alignment hole is provided in a spinneret member.
5. Yarn processing device according to either of claims 1 or 4, characterised in that the clamping means comprise a tension spring (10) or an open tension ring or a compression zone, and the alignment pins are preferably miniaturised in diameter or designed so as to be needle-shaped, a corresponding groove being provided on the alignment pins for each tension ring in such a way that the diameter of the tension ring can be reduced during assembly and disassembly of the alignment pins owing to an external force.
6. Yarn processing device according to any of claims 1 to 5, characterised in that an insertion cone (12) is provided in the processing member in which the alignment pin is held by the clamping means, the insertion cone (12) passing into a relief for the clamping means or a tension ring as a retaining shoulder for longitudinal positioning of the alignment pin.
7. Yarn processing device according to any of claims 1 to 6, characterised in that the processing member is designed in two parts as spinneret plate (3) and cover plate (2), the alignment pins being fixable by the clamping means, preferably in the nozzle plate.
8. Yarn processing device according to any of claims 1 to 7, characterised in that the cover plate (2) has a blind hole or through-hole with a slightly enlarged diameter at the hole end and an alignment hole for the alignment pin in the hole insertion part.
9. Yarn processing device according to any of claims 1 to 8, characterised in that the connection consists of two alignment pins (5, 5'), both alignment pins preferably projecting at one side of the yarn processing spinneret for a second positioning function.
10. Yarn processing device according to any of claims 1 to 9, characterised in that at least one processing member component, preferably both processing member components, are made of ceramic material and the alignment pins are made of high-strength steel or ceramic.
11. Yarn processing device according to claim 1, characterised in that for heat treatment it comprises a processing member with a through-chamber (20) with a yarn entry and yarn exit aperture for the free passage of the yarn and a feed duct with large cross-section, in particular for steam, the steam feed duct with a large cross-section preferably extending as a slot over at least 20% of the length of the steam box.
12. Yarn processing device according to any of claims 1 to 11, characterised in that it is designed as a double spinneret with two parallel yarn passages, the two spinneret halves being designed symmetrically in both processing member halves.
13. Use of the yarn processing device according to claim 1, upstream and/or downstream of an air processing nozzle for thermal yarn processing, the thermal effect of a hot gaseous medium, in particular of hot steam, being used, or as a yarn intermingling nozzle.
14. Use of the yarn processing device according to claim 1, upstream and/or downstream of an air processing nozzle for texturing or intermingling, for thermal yarn processing, the thermal yarn processing taking place in a processing member with a through-steambox.

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