EP0189099A1 - Yarn texturing jet - Google Patents

Abstract

1. Nozzle for texturing a yarn, comprising a conveying part (51) and a perforated stuffer box (23), the conveying part having a yarn channel (1) which is connected to the gas supply (10) by overflow openings (6) lying on the periphery of a cone and the nozzle having an openable and closable yarn insertion slot (28, 71) in an axial plane of the yarn channel for the purpose of thread presentation, and having the following characterizing features : The conveying part (51) and the stuffer box (23) are designed as mechanically independent constructional elements which are fastened in a manner such that the stuffer box immediately adjoins and is in alignment with the conveying part and is pneumatically connected to the conveying part ; only the conveying part comprises a stationary part (12, 51) and a movable part (13, 52), the yarn channel (1) of the conveying part (51) forming a yarn insertion slot or being closed by relative movement of the two parts ; the stuffer box (23) is a tube which has a longitudinal slot (28) which is in alignment with the thread insertion slot of the conveying part.

Description

The invention relates to a nozzle for texturing a thread, consisting of a conveying part and a perforated stuffer box, the conveying part having a thread channel which is connected to the gas supply via an annular channel and overflow openings which lie on the surface of a cone, and wherein the nozzle has an opening and closing thread insertion slot for the purpose of thread application in an axial plane of the thread channel.

DE-AS 1 435 653 describes a method for the continuous upsetting of thermoplastic threads, for the implementation of which a device is used in which the thread is conveyed through a warm fluid medium by means of an injector into a stuffer box with a gas-permeable side wall and forms a thread plug, whereupon it is taken up and wound up at the end of the device.

Other devices of this type are described in DE-OS 26 32 083 and DE-Gm 77 23 587. The latter two in particular have proven themselves in operation with regard to the quality of the compression crimp. However, all devices which have also become known have the major disadvantage that the insertion of the thread to start the device is extremely cumbersome and time-consuming. If, for example, the thread has to be reinserted during operation - for example after a thread break or the like - this can only be done after the hot compressed gas has been switched off and, if necessary, after the device has cooled sufficiently.

The European patent applications 108 205, 123 072, 26360, 110 359 have also made known attempts to make the texturing nozzle openable by producing the texturing nozzle from two halves which are pressed together in a sealed manner during operation. The nozzles are treated as a mechanical unit. This is only possible if the conveying part on the one hand and the adjoining stuffer box on the other hand are designed with the same strength. For this reason, special measures must be taken for the perforated stuffer box in order to achieve the required strength.

The invention is therefore based on the object to design the texturing nozzle described in the preamble of claim 1 so that the insertion of the thread into the upsetting device is possible without a change in its operating state being necessary.

The disadvantages of the known devices and methods are to be avoided and an openable nozzle is to be created which ensures simple and quick insertion of the running thread into the nozzle without impairing its performance. The construction of the nozzle should in particular enable a streamlined construction of the stuffer box, so that the flow of the treatment medium is guaranteed in an optimal manner and is not impaired by the fact that the stuffer box must be particularly solid to achieve sufficient strength.

This is achieved according to the invention by a nozzle for texturing a thread, which consists of a conveying part and a perforated stuffer box, the conveying part having a thread channel which is connected to the gas supply via an annular channel and overflow openings on the jacket of a Cone lie, is connected, and wherein the nozzle for the purpose of thread application in an axial plane of the thread channel has a thread insertion slot to be opened and closed.

In this nozzle, a different construction is provided for the conveying part than for the stuffer box. It is taken into account that in the conveying part in which the thread not only has a high thermal energy, but also at high flow velocities of the treatment medium, e.g. hot air or steam, also a high kinetic energy must be given, high air or steam pressures prevail. Leakages should therefore be avoided under all circumstances.

For these reasons, the conveying part consists of two solid components that lie on top of one another with congruent surfaces and form a thread channel between them, which is closed like a lid. In this sense, the conveying part can consist of two halves which are connected to one another by a hinge and which, during operation, are pressed tightly against one another by strong contact forces.

For the stuffer box it is taken into account that the stuffer box should above all have the best possible design for the outflow of the treatment media and the removal of the thread plug and that this requirement can then no longer be met if the stuffer box is also designed to be massive.

In the case of such nozzles which have become known from the prior art (e.g. US Pat. No. 3,854,177 and those cited at the beginning), however, the geometry of the thread channel, the annular channel and in particular the overflow openings have been damaged in such a way that the nozzle did not convey or textured satisfactorily.

In a further embodiment of the invention, this is prevented by a combination of features.

On the one hand, the overflow opening, which was designed according to the prior art as a conical jacket-shaped gap, is made through at least one, preferably three or four individual bores which meet the annular channel from the thread channel. On the other hand, the ring channel is formed by introducing two ring channel bores on both sides of the thread channel transversely to the parting plane in a plane lying transversely to the parting plane of the nozzle, the bores either meeting at their ends or by further connecting bores which are in the same Level, are connected. This creates a polygonal ring channel that leads around the thread channel.

The overflow channels, which are designed as oblique bores and lie on a cone jacket, originate from this ring channel. The overflow channels preferably open onto a shoulder with which the narrow input region of the thread channel merges into the further end region of the thread channel.

To form a double nozzle, one central nozzle half is designed as a prism, the cross section of which is an isosceles, preferably right-angled triangle or part of the same. Another right-angled isosceles prism (outer prism) is placed on the two congruent side surfaces as the second nozzle half. The thread channel lies in each contact surface. According to this invention, the two nozzle halves are movable relative to one another perpendicular to the parting plane and are preferably pivotally connected by a hinge. A hinge, which in particular favors the full superimposition of the two nozzle halves, is formed by making a bore parallel to the thread channel in the two nozzle halves before they are divided. The division then takes place, the parting plane passing through the axis of the thread channel and essentially through the axis of this hinge bore.

Now a rod is inserted as a hinge in the shells of the hinge bore. A slight chamfer of 10 to 30 °, preferably 10 to 20 °, of the end of the parting plane of a nozzle half located at the hinge bore means that the nozzle can be opened with a (depending on the chamfer) a small angle. The running thread can now be inserted or sucked into the thread channel perpendicular to its running direction without the thread having to be cut through.

The nozzle according to the invention is surrounded by an insulating chamber which is heated. This way, the nozzle does not get cold during the threading process. The isolation chamber has one or more doors at the front. One of the nozzle halves is preferably connected to the door, so that the nozzle is simultaneously opened and closed with the insulating chamber.

The insulating or heating chamber and the nozzle enclosed therein is particularly user-friendly in that the openable nozzle halves are connected to the door or the doors in such a way that the nozzle halves are pressed against the stationary nozzle half by the locking of the door.

Pneumatic or hydraulic servo power transmitters can also be used to generate the contact pressure.

In an alternative exemplary embodiment, the conveying part consists of a housing block with a through-hole, at the lower end of which the stuffer box is connected, a sleeve which is fitted into the through-hole in a sealing manner and can be rotated with respect to the housing block, and has an axial thread guide channel and at least one, preferably three to four, in the general thread running direction extending obliquely to the thread guide channel, from one Air supply outgoing blow ducts, housing block, quill and stuffer box have slits opening into their axial bores, which can be adjusted to a common threading slot by rotating the quill and the housing block is preheated by channels extending essentially parallel to the quill, which on the one hand with the connection for the hot compressed gas and on the other hand are connected to the blow holes.

According to the invention, the quill is so precisely fitted into the through hole that, apart from the threading slot, there are no leaks. In order to ensure, despite the extremely small clearance between the sleeve and through bore, that the sleeve can be rotated at any time even during the heating caused by operation, provision is made according to the invention that the operating temperature of the sleeve cannot be higher than that of the housing block. what is achieved in that the hot compressed gas, preferably near the lower end, enters the housing block, is led through at least one gas channel running in the block into the area of the blowing channel inlets and thereby heats the housing block to a temperature which is generally slightly above the Temperature of the quill, but never below.

The gas is preferably supplied in the housing block, since this promotes heat conduction in the nozzle and the gas supply is facilitated. The mouths of the feed channels in the through hole in which the quill is inserted are designed so that there is overlap at least in the operating position of the quill. However, the angular distances are advantageously such that there is a flow connection between the housing and the sleeve both in the operating position and in the threading position. This can ensure that the thread using the compressed gas also promoted during threading and both the nozzle and the thread are kept at operating temperature during threading.

The stuffer box designed as a separate component is connected to one of the components of the conveying part in all exemplary embodiments, but is designed as a separate component and in all cases is provided with an insertion slot which is aligned with the insertion slot of the conveying part in the threading position. In one embodiment of the invention, the insertion slot of the stuffer box is closed by a sheet which can be inserted into the slot and extends essentially to its inner circumference. It has been found that such a sheet constitutes an excellent closure element, since it leaves slots open on both sides, the width of which can essentially be adapted to the perforation or slitting of the stuffer box. In this way, a homogeneous flow field can be achieved in the stuffer box.

In an alternative embodiment it is provided that the stuffer box can be clamped by radial clamping forces in such a way that the threading slot is closed during operation. For this, e.g. Pneumatic cylinder-piston units are provided which are operated using collets or the like. Apply radial forces to the stuffer box at several points along the axial length.

In a further alternative embodiment, the stuffer box is under internal prestress such that the insertion slot is closed. The insertion slot can be opened for threading by means of a spreading device. The sleeve of the conveying part is particularly suitable as a spreading device. In this case, the quill will engage with its end in the stuffer box and through one with the The cam connection meshing on the inner circumference of the stuffer box causes the expansion. As an alternative, it is also possible for the end faces of the stuffer box and the sleeve to be connected on the one hand via a guide curve which is eccentric to the sleeve and on the other hand by means of a pin engaging in the guide curve. Depending on the type of eccentricity of the guide curve, this positive connection between the sleeve and the stuffer box can either be used to spread the stuffer box if the stuffer box is under internal tension such that the insertion slot is closed or can be used for radial compression in the sense of closing the insertion slot.

Exemplary embodiments of the invention are described below.

• Fig. 1 Längsschnitt der Düse;
• Fig. 2 Querschnitt einer Doppeldüse;
• Fig. 3a Querschnitt von zwei modifizierten Ausführungen 3b der Düse;
• Fig. 4 den Längsschnitt durch Düsen mit angeschlossener 4a Stauchkammer;
• Fig. 5 den Querschnitt der Stauchkammern; 5a
• Fig. 6 Ansicht einer weiteren Ausführung;
• Fig. 7 Schnitte der Teile eines zweigeteilten
• bis 10 Gehäuseblocks;
• Fig. 11 Schnitt des Oberteils;
• 12 Ansicht des Oberteils einer zweiteiligen Pinole;
• Fig. 13 Pinolenunterteil, geschnitten;
• Fig. 14 Pinolenunterteil, Ansicht;
• Fig. 15 horizontaler Schnitt durch Block und Pinole, Pinole in Betriebsstellung;
• Fig. 16 wie vor, Pinole in Einfädelstellung;
• Fig. 17 Längsschnitt der Vorrichtung mit aufspreizbarer Stauchkammer;
• Fig. 18a Schnitt durch eine Stauchkammer nach Fig. 17 mit 18b geöffnetem Einlegschlitz (Fig. 18a) und geschlossenem Einlegschlitz (Fig. 18b);
• Fig. 19 Längsschnitt durch ein Ausführungsbeispiel mit zusammendrückbarer Stauchkammer;
• Fig. 20 Querschnitt durch die Stauchkammer nach Fig. 19.

Show it

• Fig. 1 longitudinal section of the nozzle;
• Fig. 2 cross section of a double nozzle;
• Fig. 3a cross section of two modified versions 3b of the nozzle;
• 4 shows the longitudinal section through nozzles with a connected 4a stuffer box;
• 5 shows the cross section of the stuffer boxes; 5a
• Fig. 6 view of another embodiment;
• Fig. 7 sections of the parts of a two-part
• up to 10 housing blocks;
• Fig. 11 section of the upper part;
• 12 View of the upper part of a two-part quill;
• Fig. 13 Quill base, cut;
• Fig. 14 Quill base, view;
• 15 horizontal section through block and quill, quill in operating position;
• 16 as before, sleeve in threading position;
• 17 shows a longitudinal section of the device with an expandable stuffer box;
• 18a shows a section through a stuffer box according to FIG. 17 with the insertion slot opened in 18b (FIG. 18a) and the insertion slot closed (FIG. 18b);
• 19 shows a longitudinal section through an exemplary embodiment with a compressible stuffer box;
• 20 cross section through the stuffer box according to FIG. 19.

1 shows a longitudinal section of the conveying part of a nozzle according to FIG. 2 without the insulating chamber. The conveying part of the nozzle has a thread channel 1 through which the thread (not shown) runs in the direction 2. The thread channel 1 widens on the shoulder 3, with which the narrow entrance area of the thread channel merges into an enlarged area 4 (mixing channel). A conical outlet area 5 (diffuser) adjoins the enlarged area 4. At the level of the shoulder 3, four overflow openings 6 meet in the thread channel. These start from four bores 8, which form an annular channel, in a plane perpendicular to the thread channel, which lies above the mouth of the overflow openings. The holes form a polygon surrounding the thread channel. This ring channel 8 is connected to the gas supply via the feed channel 10. Hot air, steam as saturated steam or superheated steam can be introduced via the feed channel 10.

As the cross section according to FIG. 2 shows, it is a divisible double nozzle for conveying and texturing two threads. The right conveying part of the nozzle is shown in the open state, the left conveying part in the closed state. The double nozzle is made from a block manufactured, the long sides of which are twice as long as the broad sides in the cross section shown. This block is now divided on a diagonal each of the two _B reitseitquadra- te twice. As a result, the central nozzle half 12 is now designed as a prism, the cross section of which is an isosceles, here right-angled triangle. The two outer nozzle halves 13 also represent a right-angled, isosceles prism. The thread channels 1 and the hinge bores 11 are now introduced into the two nozzle halves 12 and 13, for example by drilling, milling, countersinking. Now the thread channels 1 and hinge holes form cylinder half-shells in each contact surface. At least one of the ends of the parting planes located on the hinge bore 11 is given a slight chamfer 14 (for example from 10 to 20 °), so that the nozzle can be opened at an appropriate angle. Two blind holes 8 are now made in each of the two outer nozzle halves 13 and in the central nozzle half 12 on both sides of the thread channels 1 in a plane perpendicular to the thread channel. Each hole forms an acute angle with the parting plane, here 45 °, so that the ends of the holes meet. These bores now form an annular channel 8 for each of the nozzles, which leads around the thread channel 1. A bore serving as a feed channel 10 is made in each ring channel 8. Four individual bores, which serve as overflow channels 6, are now made from each thread channel. These bores lie on the surface of an acute-angled cone and are each offset by 90 ° to one another and meet the bores forming the annular channel 8 from the respective thread channel. Now the outer nozzle halves are placed on the central nozzle half, and rods are inserted as hinges in the shells of the hinge bores 11. The nozzle halves are pressed together by the springs 18. By chamfering 14 the end of each parting plane located at the hinge bore, it is achieved that each nozzle can be opened with a small angle (depending on the chamfer). never double nozzle is surrounded by an insulating chamber 15 which is heated. The insulating chamber has a door 16 at the front. The outer nozzle halves 13 are connected to the door by a closing lever 17, so that the nozzle is simultaneously opened and closed with the insulating chamber. To support the outer nozzle halves 13, the springs 18 are inserted between the insulating chamber and the outer nozzle half 19. This adeneinlegschlitz formed for each nozzle half in the dividing plane 9, a _F. Through this thread insertion slot, two running threads can be inserted perpendicular to their running direction in each of the thread channels without the need to cut or suck in threads. The front edge of the central nozzle half 12 separates the threads from one another. The central nozzle half has either a central or - as shown - two central connections 10 for feeding the ring channels.

Fig. 3a and 3b show cross-sections of _F örderteils of nozzles which substantially correspond to the nozzle according to Fig. 1, 2, but in which the ring channels 8 are formed somewhat differently.

In these embodiments, each nozzle consists of two cuboid halves. The ring channel is formed in that blind holes 20 are made from the parting plane 9 on both sides of the thread channel in both nozzle halves at an acute angle (FIG. 3a) or at a right angle (FIG. 3b) to the parting plane. First, the cuboid nozzle is divided into two cuboid halves along the parting plane 9 and then the thread channel 1 is introduced into the two halves, for example by milling. The four ring channel bores 20 are then carried out in the manner described above. The individual ring channel bores 20 are underneath through two connecting bores 21 parallel to the parting plane joined together at their ends. These two connecting bores 21 are closed again with threaded plugs 22.

Four overflow channels 6 are introduced from the thread channel 1 as bores, which meet the ring channel from the thread channel 1. You meet the ring channel at the point where the individual bores 20, 21 meet for the ring channel. The nozzle is provided with a central air connection 10.

As can be seen from the figures, the bores emanating from the parting plane 9 and forming the ring channel 8 or part of the ring channel 8 communicate in the parting plane.

4 and 4a show texturing devices according to FIG. 2 without an insulating chamber 15 and without a second nozzle half which can be opened. The left part of the stationary nozzle half 12 of the conveying part and the stuffer box 23 attached to it and the profiled conveyor mechanism 24 for the thread plug formed in the stuffer box 23 can be seen.

The stuffer box 23 is designed as a slotted tube and has circumferentially distributed longitudinal slots 25 or perforations in the upper and middle region through which the blowing medium conveying the thread can escape radially. In the exit area, the slots 25 are covered from the inside by a bushing 26 with a flange-shaped stop 27, so that no capillary threads of the thread plug can get caught on the walls of the slot tube. With regard to the stuffer box 23, however, reference is made to DE-U 7723587 with a detailed description.

The stuffer box 23, including the bushing 26 inserted at the outlet end, has an insertion slot 28 along it which penetrates the jacket along a line along the entire length of the stuffer box.

The thread insertion slot 28 and the axis of the stuffer box lie in the parting plane 9 of the conveying part of the nozzle. The stuffer box 23 is only attached to the fixed half of the conveying part. Therefore, the movable half of the conveying part can be opened and closed independently of the stuffer box. 2, the stuffer box of the other half is arranged so that its insertion slot 28 is also flush with the parting plane of the second half, so that the insertion slots 28 according to FIG. 5 enclose an angle of 90 °.

In the exemplary embodiment according to FIGS. 4 and 5, the longitudinal half of the stuffer box, which lies below the movable half of the conveying part, is also movable in such a way that the insertion slot 28 can be opened and closed.

To close the insertion slot 28 of the stuffer box 23, several force transmitters are used, which are distributed along the length of the stuffer box and which act in the radial direction perpendicular to the parting plane 9 of the nozzle, for example mechanical pressure screws or - as in FIG. 5 - cylinder-piston units 29 that are supported on the machine frame. The wall of the stuffer box can be designed to be flexible by additional radial slots. Counterholder 30 lies on the same normal plane as the force transmitter and applies the counterforce. Relaxing the cylinder-piston unit 29, the wall of the slotted tube and the sleeve 27 springs back and opens the _F adeneinlegeschlitz 28 for execution of the positioning process.

The texturing nozzles shown in FIGS. 4a and 5a largely correspond to the texturing nozzles according to FIGS. 4 and 5. The conveying part corresponds to that according to FIG. 4. The description of the conveying part according to FIG. 4 also applies to the conveying part according to FIG. 4a.

The stuffer box 23 according to FIG. 5a also corresponds to the stuffer box shown in FIG. 5, reference being made in this case also to the description of FIGS. 4, 5. The striking plate 46 serves to close the thread insertion slot 28 of the stuffer box. The width of this striking plate is so matched to the width of the insertion slot that on the one hand - as described for the longitudinal slots 25 - air can escape and that on the other hand the sheet can be easily inserted into and removed from the slot. The length of the striking plate corresponds to the length of the stuffer box 23. Appropriate devices are provided to hold the striking plate in its operating position, such as a latch that is vertically displaceable on the back of the sheet 46, as indicated by reference numeral 49 and arrow 50. In order to pivot the striking plate 46 out of its operating position, as shown in FIG. 5a, the bolt 49 can be moved away. On the other hand, the striking plate is held in its operating position by the plate striking the underside of the conveying part. The striking plate is pivotally mounted (pivot axis 48) on the holder 47. Holder 47 is fastened to the stationary part of the inlet part of the nozzle in the immediate vicinity of the parting plane 9, in such a way that the plate is pivotable in the plane 9 and the plane of the insertion slot 28.

6 shows the overall view of a further upsetting device in a parallel perspective representation. The conveying part consists of the housing block 51 and a quill 52. The quill 52 is inserted into the through bore 57 of the housing block 51 and can be rotated with the aid of an adjusting lever 81.

The stuffer box 23 is a relatively thin tube which is provided with narrow longitudinal slots 25 in the upper part and is air-impermeable in the lower part. Housing block 51, sleeve 52 and stuffer box 23 are each provided with a longitudinal slot 70, 71 and 28 over their entire length. The stuffer box 23 is connected to the housing block 51 by stud screws 72. Slots 79 and 21 of the housing block and slot 28 of the stuffer box are aligned with one another. The slots 70, 71, 28 are each aligned radially. The slot 28 of the stuffer box 23 can be closed by a striking plate 54. The thickness of the sheet approximately corresponds to the width of the slot. The sheet is seated on a pivot lever 73.1. The swivel lever can be swiveled about swivel axis 73.2. To insert the thread, the sheet can be pivoted out of the slot 28 of the stuffer box using the pivoting device 73.

In order to facilitate the manufacture of the housing block 1, it is made in two parts, as can be seen in FIGS. 6 to 10 and is shown in more detail. Figures 7 to 10 show a preferred embodiment of the housing block, which has above all manufacturing advantages; a one-piece design of the housing block 1 is also possible.

The entire housing block is penetrated by the through hole 57.

The lower part of the housing block is shown in view and section in FIGS. 9 and 10. The lower part of the housing block has a compressed gas connection 75 and a gas channel 10. The gas channel 10 runs parallel to the through hole 57 and opens into the separating surface 77 of the two parts of the housing block. The through hole 57 is open slit their entire axial length in the radial direction. Through hole and slot 28 are made in the housing block 51 when the two parts are assembled. In this way it is ensured that the through hole 57 and the thread insertion slot 28 are exactly aligned in both parts. The upper part of the housing block is shown in Figures 7 and 8. A channel system is introduced in the parting plane 77, which is shown in view in FIG. 7. This channel system is based on a blind hole 10, which is aligned with the gas channel 10 of the lower part in the assembled state of the two parts. From the gas channel 10, the channel system branches into two distributor channels 56, which enclose the through bore 57 on two sides. The distributor channels 56 open into the through bore 7 with two channel branches 58. This channel system just described is introduced into the upper part of the nozzle block 51 in the form of grooves. These grooves are milled into the parting surface 77 of the upper part. By joining and bracing the two parts of the housing block, these grooves form a channel system through which hot air or steam is guided to the sleeve 52.

The structure of the sleeve 52 and the further distribution of the hot air or steam can be seen in FIGS. 11 to 14. The sleeve 52 also consists of two parts. The upper part 28, which is shown in FIGS. 11 and 12, contains the narrower thread guide channel 1, which lies on the axis of the rotating part, and four radial blind bores 59 distributed over the circumference. Four blowing channels 6 in are from the underside 63 drilled the upper part of the quill, so that the blowing channels 6 lie on the imaginary surface of a pointed cone. The upper part of the quill is screwed into the lower part by thread 62. The separating surfaces 63 of the upper and lower parts touch each other in a sealing manner. The lower part of the quill contains the extended one Thread channel 4 (mixing channel) and the conical extension 5 of the thread channel (diffuser).

Both the outer surface processing and the slot production take place in the assembled state of the quill.

Figures 15 and 16 give a cross-section through the mounted conveying part in height of the distribution channel 56 again, in which Fig. 10 shows the operating state, _F ig. 11 shows the position of the sleeve 52 during threading. The threading slot 20 of the sleeve 52 is rotated in the operating position relative to the slot 28 of the housing block 51 by 90 ° and covered by the inner wall of the through hole 7. The slots are aligned in the threading position. In both settings, however, the blind holes 59 of the sleeve 52 are connected to the channel branches 58 of the channel system of the housing block. Therefore, the nozzle is also supplied with heating gas in the threading position.

17 shows the longitudinal view of a further exemplary embodiment of the texturing nozzle and FIGS. 18a, 18b the section through the stuffer box of this texturing nozzle. The conveying part of the texturing nozzle consists of the block 51 and the quill 52. The quill 52 is inserted into the through bore 57 of the block. The quill is divided into two. The upper part 78 of the quill has a ring shoulder 32 which rests on the upper end face of the housing block. In the housing block, the distribution channel 74 lies on three sides of the through hole 57. The distribution channel 74 lies on a normal plane to the through hole 57. The distribution channel 74 is connected to a source of hot air or steam. A plurality of gas channels 10 extend from the distribution channel 74 and lie parallel to the through hole 57 in the housing. The gas channels 10 open on the upper end face of the housing block 1. The distribution channels 74 and gas channels 10 are long enough to cause the housing block to heat up. In the face of the ring shoulder 32, which is the face of the housing block 51st facing, an annular groove 34 is introduced. This annular groove meshes with the mouths of the gas channels 10. Four radial connecting bores 58 are made in the upper part 78 of the sleeve 52 from the outer circumference of the annular shoulder 32.

The connection bores 58 are connected to the annular groove 34. The connection bores 58 are closed on the outer circumference of the ring shoulder 32 by screw plugs 22. A blow channel 6 extends from the inner end of the connection bores 58. The blowing channels 6 open on the lower end face of the upper sleeve part 78, so that the blowing channels 6 are directed into the mixing channel 4 of the lower sleeve part 80. On the circumference of the upper quill 78, e.g. four connection bores 8 and accordingly four blow channels 6 may be arranged. The blow channels 6 lie on the imaginary jacket of an acute-angled cone. The upper quill part 78 is connected to the lower quill part 80 by thread 62. The sleeve 52 is held by a cover 33. The cover 33 comprises the ring shoulder 32 and is screwed tightly to the housing block 51. The quill 52 is adjustable by means of the handle 31.

The mixing channel 4 ends in a diffuser 5. The stuffer box 23 connects to the diffuser 5. The stuffer box is a relatively thin tube. This tube is provided with longitudinal slots 25 over a partial length. These longitudinal slots are milled by a side milling cutter, which partially dips into the jacket of the stuffer box 33. The longitudinal slots serve the purpose of letting the heating gas (hot air, steam) escape from the stuffer box. Furthermore, the stuffer box 23 is provided with an insertion slot 28. This insertion slot 28 extends over the entire length of the stuffer box. The insertion slot 28 of the stuffer box meshes with the insertion slot 71 in the housing block. The stuffer box has a flange 36. With this flange the stuffer box on the side opposite the threading slot 28 is screwed to the housing block 51 by screw 37. The flange has elongated holes 38.1 and 38.2 offset by 90 °. In these elongated holes, the flange is screwed to the housing block 51 in such a way that the wall of the stuffer box 23 can execute a certain radial movement for opening and closing the insertion slot 28. The quill extends with its end part 39 into the compression chamber 23. The end piece 39 of the quill 52 and the upper part of the compression chamber 23 are oval in cross-section and essentially congruent to one another. The stuffer box is manufactured in such a way that it is under internal prestress. This pretension can be produced, for example, by being enclosed by a spring ring 40.

18b shows the operating position of the quill 52. The threading slot 70 of the sleeve 52 does not align with the threading slot 71 of the housing block 51 and the threading slot 28 of the stuffer box 23. In this operating position, the main axes of the oval end piece 39 of the sleeve 52 and the oval inner cylinder of the stuffer box 23 lie one above the other. Therefore, the threading slot 28 of the stuffer box is closed due to the internal preload of the stuffer box.

The threading position is shown in FIG. 18a. All threading slots 70, 71, 28 are aligned with one another. By turning the sleeve 52, the main axis of the oval end piece 39 of the sleeve 52 now lies on the small minor axis of the oval inner cross section of the stuffer box 23. As a result, the stuffer box 23 is spread out in the region of its threading slot 28.

The conveyor mechanism 24 is located below the stuffer box 23. It consists of two rotatingly driven conveyor rollers which lie on a normal plane to the axis of the stuffer box. The conveyor rollers have a circumferential groove 44 on their circumference. These grooves of both conveyor rollers form a passage in the axial direction, the cross section of which essentially corresponds to the cross section of the stuffer box. In this way, the thread plug formed in the stuffer box can be conveyed by the two conveyor rollers 24. Details can be found in DE-A 26 32 082.

Another embodiment of the texturing nozzle is shown in longitudinal view or in longitudinal section in FIG. 21 and in cross section through the stuffer box in FIG. 22.

The conveying part of the texturing nozzle consists of the block 51 and the quill 52. The quill 52 is inserted into the through bore 57 of the block. The quill is divided into two. The upper part 78 of the quill has a ring shoulder 32 which rests on the upper end face of the housing block. The housing block is penetrated on three sides of the through hole 7 by a distribution channel 74. The distribution channel 24 is connected to a source of hot air or steam. A plurality of gas channels 10 extend from the distribution channel 74 and lie parallel to the through hole 7 in the housing. The gas channels 10 open onto the upper end face of the housing block 51. An annular groove 34 is introduced into the end face of the ring shoulder 32, which faces the end face of the housing block 9. This annular groove meshes with the mouths of the gas channels 10. Radial connecting bores 58 are made in the upper part 78 of the sleeve 52 from the outer circumference of the annular shoulder 32. The connection bores 58 are connected to the annular groove 34. The connection bores 58 are closed on the outer circumference of the ring shoulder 32 by screw plugs 22.

Individual blowing channels 6 extend from the inner end of the connection bores 58. The blowing channels 6 open on the lower end face of the upper sleeve part 78, so that the blowing channels 6 are directed into the mixing channel 4 of the lower sleeve part 80. On the circumference of the upper quill 78, e.g. four connection bores 58 and accordingly four blowing channels 6 may be arranged. The blow channels 6 lie on the imaginary jacket of an acute-angled cone. The upper quill part 78 is connected to the lower quill part by thread 62. The sleeve 52 is held by a cover 33. The cover 33 comprises the ring shoulder 32 and is screwed tightly to the housing block 51. The quill 52 can be rotated by the handle 31.

The mixing channel 4 ends in a diffuser 5. The stuffer box 23 connects to the diffuser 5. The stuffer box is a relatively thin tube. This tube is provided with longitudinal slots 25 over a partial length. These longitudinal slots are milled by a side milling cutter, which is partially immersed in the jacket of the stuffer box 23. The longitudinal slots serve the purpose of letting the heating gas (hot air, steam) escape from the stuffer box. The stuffer box 23 is also provided with an insertion slot 28. This insertion slot 28 extends over the entire length of the stuffer box. The insertion slot 28 of the stuffer box is meshed with the _E inlegschlitz 71 in the housing block. The stuffer box has a flange 36. With this flange, the stuffer box on the side opposite the insertion slot 28 is screwed tightly to the housing block by screw 37. The flange has elongated holes 38.1 and 38.2 offset by 90 °. In these elongated holes, the flange is screwed to the housing block 51 in such a way that the wall of the stuffer box 23 can execute a certain radial movement to open and close the insertion slot 28. The quill has on its face that of the stuffer box is facing, two pins 41.1 and 41.2. These pins engage in grooves 42.1 and 42.2, which are introduced into the corresponding end face of the stuffer box. These grooves are offset from the insertion slot 28 of the stuffer box by approximately 90 ° in both directions, as the top view of FIG. 20 shows. Furthermore, the grooves 42.1 and 42.2 are eccentric. Therefore, when the sleeve 52 is rotated relative to the housing block 51 and the stuffer box 23, the pins 41.1 and 41.2 radially compress the stuffer box wall or spread apart the stuffer box wall radially. The last branch 43.1 or 43.2 of the stuffer box runs essentially in the circumferential direction. When the pins 41.1 and 41.2 are in these branches, the stuffer box is in the operating position, the insertion slot 28 of the stuffer box is closed and the insertion slot of the sleeve 52 is essentially 90 ° offset from the insertion slot 71 of the housing block 51.

Regarding conveyor 24, reference is made to the explanations for FIGS. 17, 18a, 18b.

REFERENCE SIGN LISTING

• 1 _F adenkanal, thread guide duct
• 2 thread running direction
• 3 shoulder
• 4 extended end area, mixing channel
• 5 conical exit area, diffuser
• 6 overflow opening (channels), oblique hole, blow channel
• 7 overflow opening (channels), blow channel
• 8 ring channel, hole, blind hole, ring channel hole
• 9 parting plane, contact surface, parting plane
• 10 air supply duct
• 11 hinge hole
• 12 central nozzle halves
• 13 outer nozzle half
• 14 chamfering
• 15 isolation chamber
• 16 door
• 17 locking lever
• 18 closing springs
• 19 Outside of the nozzle half
• 20 hole, ring channel hole
• 21 hole, ring channel connecting hole
• 22 threaded plugs, screw plugs
• 23 stuffer box
• 24 conveyor
• 25 longitudinal slot
• 26 socket
• 27 stop
• 28 insertion slot
• 29 cylinder-piston unit, power transmitter
• 30 counterholders
• 31 adjustment lever
• 32 ring approach
• 33 cover
• 34 ring groove
• 36 flange
• 37 screw
• 38.1 slots
• 38.2 oblong holes
• 39 end piece, cam piece
• 40 spring washer
• 41.1 pens
• 41.2 pens
• 42.1 grooves
• 42.2 grooves
• 43.1 branch
• 43.2 branch
• 44 groove
• 45 groove
• 46 striking plate
• 51 block, housing block, conveyor part
• 52 quill
• 54 striking plate
• 56 Air supply, distribution duct
• 57 through hole
• 58 connection, connection bore; Sewer branch
• 59 radial blind holes
• 62 fine threads
• 63 mating surface, separating surface
• 64 mating surface
• 68 mating surface
• 70 slot, threading slot
• 71 slot, threading slot
• 72 stud screw
• 73 swivel device
• 74 distribution channel
• 75 connection, compressed gas connection
• 76 dividing surface
• 77 dividing surface
• 78 quill top
• 79 connecting channel
• 80 quill base

Claims (16)

1. nozzle for texturing a thread, consisting of a conveying part (51) and a perforated stuffer box (23),
wherein the conveying part has a thread channel (1) which is connected to the gas supply (10) through overflow openings (6) which lie on the surface of a cone, and wherein the nozzle for the purpose of thread application in an axial plane of the thread channel one to be opened and has a thread insertion slot (28, 71) to be closed,
with the characteristic features: The conveying part (51) and the stuffer box (23) are designed as mechanically independent components which are fastened in such a way that the stuffer box connects flush with the conveying part and is pneumatically connected to the conveying part; only the conveying part consists of a stationary part (12, 51) and a movable part (13, 52), the thread channel (1) of the conveying part (51) forming or closing a thread insertion slot by relative movement of the two parts; the stuffer box (23) is a tube having a longitudinal slot (28) which is aligned with the örderteils Fadeneinlegschlitz of _F. 2. Nozzle according to claim 1,
characterized in that
the stuffer box (23) can be closed by a sheet (54) inserted into the insertion slot (28). 3. Nozzle according to claim 1,
characterized in that
the stuffer box (23) radial force transducer (29) is compressible in such a way that the insertion slot (28) is closed. 4. Nozzle according to claim 1,
characterized in that
the stuffer box (23) in the circumferential direction in such a manner under pretension, that the insertion slot (28) closed, and by applying the radial Aufspreizkräfte _(F ig. 18) is openable. 5. Nozzle according to one of the preceding claims,
characterized in that
the thread insertion slot of the conveying part is formed in that the conveying part (51) consists of two halves (12, 13) lying on top of one another with congruent surfaces and forming the thread channel (1) between them, the stuffer box (23) being connected to the stationary half (12 ) is flanged and the insertion slot (28) of the stuffer box lies in the parting plane (9) of the two halves. 6. Nozzle according to claim 5,
characterized in that
the overflow opening is made through at least one obliquely drilled individual bore (oblique bore 6) which meets an annular channel (8) from the thread channel (1),
and in that the ring channel (8) is formed in that in each nozzle half (12, 13) on a plane transverse to the parting plane (9) of the nozzle, two ring channel bores (8) on both sides of the thread channel (1) from the parting plane (9) from which ring channel bores (8) meet at their ends or which ring channel bores (20) are connected at their ends by further connecting bores (21), the ring channel bores (8, 20) of the two nozzle halves introduced from the parting plane being aligned with one another in the closed state of the nozzle. 7. Nozzle according to claim 6,
characterized in that
the ring channel bores (8) are made in a plane perpendicular to the thread channel, perpendicular or inclined to the parting plane,
wherein the ring channel bores (8) are preferably designed as blind holes which meet at their ends (Fig. 2). 8. Nozzle according to one of claims 5 to 7,
characterized in that
to form a double nozzle, a central nozzle half (12) is designed as a prism, the cross section of which is essentially an isosceles, preferably right-angled triangle,
and that an outer nozzle half (13), which is preferably designed as an isosceles, preferably right-angled isosceles prism, is placed on each of the two congruent side surfaces, the congruent surfaces of the central nozzle half on the one hand and the outer nozzle halves on the other hand being congruent and each being one Partition planes containing thread channel are. 9. Nozzle according to one of claims 5 to 8,
characterized in that
in the parting plane (9) of the nozzle halves there is a hinge bore (11) into which a rod is inserted as a hinge, and that the end of the parting plane located at the hinge bore receives at least one chamfer (14). 10. Nozzle according to claim 1,
whose funding section is characterized by a housing block (51) with a through bore (57), at the lower end of which the stuffer box (23) connects, with an axial _F adenführungskanal (1) and at least one, preferably three to four in general yarn running direction obliquely to the yarn guide channel (1) towards extending a sealingly fitted in the through hole (57) and rotatable relative to the housing block (51) sleeve (52), of an air supply (59) outgoing blow channels (6),
The housing block (51), sleeve (52) and stuffer box (23) have slots (9, 70, 71) opening into their axial bores (1, 4, 57), which can be adjusted to a common threading slot by turning the sleeve (52) are and
the housing block (51) is preheated by channels (10) which extend essentially parallel to the sleeve (52) and which are connected on the one hand to the connection (75) for the hot compressed gas and on the other hand to the blow holes (6) (FIG. 6 ). 11. Nozzle according to claim 10,
characterized in that
the gas channel (s) (10) lead to a distribution channel (56) from which channel branches (58) opening into the through bore (7) extend,
the openings of the channel branches (58) in the through hole (57) being distributed over their circumference in such a way that they are congruent with the connections (59) of the blowing channels (6) in the operating position of the sleeve (52). 12. Nozzle according to claim 11,
characterized in that
Channel branches (58) and blow holes (6) on the circumference of the quill (52) and the through hole (57) are arranged at equal angular intervals and are distributed so that they are congruent in the operating position and in the threading position. 13. Nozzle according to one of claims 10 to 12,
characterized in that
the sleeve (52) is made in two parts and that the blowing channels (6) open within the cross-sectional area of the thread guide channel (1) in the separating surface (63) running perpendicular to their central axis. 14. Nozzle according to one of claims 10 to 13,
characterized in that
in the housing block (51), essentially at the level of the compressed gas connection (75), a distribution channel (74; Fig. 17) encloses the through bore (57) provided for receiving with the sleeve (52) without connection to it on three sides and with the blowing channels ( 6) is connected by a plurality of feed channels (10), which feed channels (10) run parallel to the through hole (57). 15. Nozzle according to one of claims 10 to 14,
characterized in that
the stuffer box (23) is under internal prestress in such a way that the insertion slot (28) is closed so that the stuffer box is fastened to the stationary housing block (51),
and that the sleeve (52) projects with a cam piece (39) into the stuffer box, through which the stuffer box can be expanded when the sleeve is rotated. 16. Nozzle according to one of claims 10 to 14,
characterized in that
the stuffer box (23) is fastened to the stationary housing block (51) and can be compressed in such a way that the insertion slot (28) is closed,
the end face of the sleeve (52) being operatively connected to the opposite end face of the stuffer box (23) by a guide track (42.1, 42.2) eccentric to the sleeve and a pin (41.1, 41.2) engaging therein.

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