EP1528129A2 - Method and device for treating an advancing yarn with a gaseous or vaporous medium - Google Patents

Abstract

A process for the treatment of a thread with a gaseous or vaporous medium, characterized in that the thread by a between two elongated, relative to each other against spring or magnetic force adjustable thread guide elements (15, 16) attached thread channel in a relation to the environment in the substantially sealed yarn treatment chamber (2) can run, to which the gaseous or vaporous medium under pressure passes, and that the thread then by another, between two elongated, against spring or magnetic force relative to each other adjustable thread guide elements (15, 16) attached Pulling the thread channel, wherein one tunes the cross section of the two thread channels on the thickness (titer) of the thread such that the thread passes through these channels substantially smoothly and largely seals against pressure losses from the chamber.

Description

The invention relates to a method and a device for treating a thread with a gaseous or vaporous medium.

In order to impart certain properties to a thread, it is known to use a thread bobbin or a certain amount of thread in an open or closed Chamber either under atmospheric pressure or under pressure with a on the desired properties tuned gas or vapor medium in batches to treat.

For a double-twisting spindle, it is known from DE 28 11 583 C 1, to a running thread by means of a blowing nozzle a vapor or gaseous treatment medium inflate at atmospheric pressure.

The invention has for its object to provide a method and an apparatus create, with which it is possible a running thread with a under pressure stationary, gaseous or vaporous medium to be treated, since at overpressure bring the medium closer to the single capillary over the cross section of the thread leaves, especially if the thread tension is low.

This object is achieved with a method according to claim 1 and with a device solved according to claim 3.

According to the invention, a thread treatment chamber passed through by a thread , which has a pressure chamber portion in the under pressure stationary treatment medium is injected, inlet side and outlet side Forward or downstream "thread locks", in which the current thread itself Function of a sealing element has to prevent inadvertent leakage of the Pressured treatment medium from the yarn treatment chamber so far as possible to prevent. The single yarn sluice must be designed that they of thread thickening, for example Knotstellen or the like, go through may be, and still the possibility of a preferably pneumatic thread threading should be given.

Preferred embodiments of the invention are dealt with in subclaims.

Figur 1 zeigt einen Axialschnitt der erfindungsgemäßen, einem Aufspulaggregat vorgeschalteten Vorrichtung;

Figur 2 zeigt in vergrößerter Darstellung einen Axialschnitt einer Fadenschleuse der erfindungsgemäßen Vorrichtung;

die Figuren 2a und 2b zeigen Axialschnitte der Fadenführungselemente gemäß der Linie II-II in Figur 2;

Figur 3 zeigt einen Axialschnitt einer gegenüber Figur 2 abgewandelten Ausführungsform;

die Figuren 4 und 5 zeigen Axialschnitte der erfindungsgemäßen Vorrichtung bei Durchlauf einer Fadenverdickung;

Figur 6 zeigt einen Axialschnitt entsprechend Figur 2 während der Fadendurchfädelung;

Figur 7 zeigt in vereinfachter isometrischer Darstellung eine abgewandelte Ausführungsform der Erfindung.

Die Figuren 8-11 zeigen Längsschnitte der Vorrichtung gemäß Figur 7 in verschiedenen Betriebspositionen.

Figur 12 zeigt einen Horizontalschnitt entsprechend der Schnittlinie A-A in Figur 10.

The invention will be described in more detail below with reference to the drawings.

FIG. 1 shows an axial section of the device according to the invention upstream of a winding unit;

Figure 2 shows an enlarged view of an axial section of a yarn lock of the device according to the invention;

Figures 2a and 2b show axial sections of the thread guide elements according to the line II-II in Figure 2;

FIG. 3 shows an axial section of an embodiment modified with respect to FIG. 2;

Figures 4 and 5 show axial sections of the device according to the invention during passage of a thread thickening;

FIG. 6 shows an axial section corresponding to FIG. 2 during threading;

FIG. 7 shows, in a simplified isometric view, a modified embodiment of the invention.

FIGS. 8-11 show longitudinal sections of the device according to FIG. 7 in different operating positions.

FIG. 12 shows a horizontal section corresponding to the section line AA in FIG. 10.

Figure 1 shows a schematic representation of a side view of a not to the invention belonging Aufwickelaggregats, consisting of a bobbin frame. 1 for supporting a bobbin tube or spool Sp, a spool driving Sp friction drive roller and a traversing yarn guide 4.

The device according to the invention contains as part of a thread treatment chamber x a pressure chamber section 5 with a connection 6 for blowing an under Pressurized, gaseous or vaporous treatment medium through a nozzle 7, whose outflow opening 8 may be opposed by a baffle 8. The thread treatment chamber 2 is diametrically opposite inlet and outlet openings provided in the sealing threadlockers A and B are used, which are essentially identical with each other, except that the lower yarn lock B a Druckluftinjektor 9 for threading a thread assigned by the yarn locks A and B and the yarn treatment chamber 2 is. Within the yarn treatment chamber 2, two are shown schematically Yarn supply units 10 and 11 arranged to the thread F substantially free of tension through the filament treatment chamber 2 and the pressure chamber section 5 to promote.

• einen in eine untere oder obere Öffnung der Fadenbehandlungskammer 2 abdichtend eingesetzten Anschlußstutzen 12;
• ein an den Anschlußstutzen 12 angesetztes Zylindergehäuse 13;
• einen in das Ende des Zylindergehäuses 13 eingesetzten Rohrstutzen 14;
• zwei innerhalb des Zylindergehäuses 13 untergebrachte, längliche Fadenführungselemente 15, 16 mit im wesentlichen halbkreisförmigem Querschnitt, von denen gemäß den Figuren 2a und 2b mindestens eines eine in Längsrichtung verlaufende Aussparung 16.1 bzw. 15.1 zur Bildung eines Fadenkanals aufweist;
• einen innerhalb des Zylindergehäuses 13 verschiebbaren Kolben 17;
• eine den Kolben 17 abstützende Rückstellfeder 18;
• eine die Fadenführungselemente 15, 16 abstützende Rückstellfeder 19;
• eine die beiden Fadenführungselemente 15, 16 gegeneinander drückende Ringfeder 20, die auch ein O-Ring sein kann;
• sowie übliche Dichtungselemente, beispielsweise in Form von Ringdichtungen 21.

According to FIGS. 1 and 2, each of the thread sluices A and B consists of the following individual parts:

• a connecting pipe 12 sealingly inserted into a lower or upper opening of the yarn treatment chamber 2;
• a attached to the connecting piece 12 cylinder housing 13;
• a pipe socket 14 inserted into the end of the cylinder housing 13;
• two elongate thread guide elements 15, 16 housed within the cylinder housing 13 and having a substantially semicircular cross-section, of which at least one has a longitudinal recess 16.1 or 15.1 for forming a thread channel according to FIGS. 2a and 2b;
• a displaceable within the cylinder housing 13 piston 17;
• a piston 17 supporting the return spring 18;
• a thread guide elements 15, 16 supporting the return spring 19;
• a two thread guide elements 15, 16 against each other oppressive ring spring 20, which may also be an O-ring;
• and conventional sealing elements, for example in the form of ring seals 21st

The connecting piece 12 is in the illustrated in Figure 2 lower yarn lock B provided with a downwardly projecting centering and expanding cone 12.1. The piston 17 is at its top with an upwardly projecting centering or expanding cone 17.1 provided. The two thread guide elements 15 and 16 are at their upper and lower ends configured to be substantially one together Construct tapered inlet or outlet opening into which the centering or Spreader cone 12.1 or 17.1 protrude or due to the resilient support on the one hand the thread guide elements 15, 16 and on the other hand of the piston 17 are retractable.

The embodiment according to FIG. 3 differs from the embodiment according to Figure 2, characterized in that instead of an annular spring 20, opposing magnets 22 are provided to the two yarn guide elements against each other to press.

• Reibungsarm und verschleißfrei;
• Knotendurchlässigkeit ohne merkliche Fadenspannungserhöhung;
• gute Einfädelbarkeit für einen Faden;
• Abdichtung des Behandlungsraumes zur Atmosphäre, um unbeabsichtigte Verluste an Behandlungsmedium (Dampf, spezielle Gase, Druckluft) möglichst gering zu halten.

The thread locks must have special features:

• Low friction and wear-free;
• Knot permeability without noticeable increase of thread tension;
• good threadability for a thread;
• Sealing of the treatment room to the atmosphere in order to minimize accidental losses of treatment medium (steam, special gases, compressed air).

The by the two preferably ground thread guide elements 15, 16th formed thread channel has a Fadendurchlaßquerschnitt, which is essentially the Titer or the cross section of the textile thread to be processed corresponds. By this measure closes the continuous thread substantially the thread channel for the pressurized treatment medium, so that only minimal losses occur on treatment medium. The overpressure of the still with the thread through the Thread channel flowing treatment medium, the two thread guide elements 15, 16 do not press apart, as the effective pressure area is very low is substantially limited to thread diameter times the length of the yarn passage. This pressure affects the two guide elements 15,16 cohesive Ring spring against. Instead of a ring spring can also be an O-ring or it could magnets 22 (Figure 3) may be provided.

The continuous thread is centered between the two guide elements, since he seeks the path of the least frictional resistance. As a result, no Faserkapillare between the thread guide elements 15, 16 is clamped.

The two thread guide elements are on passing thread over the two centered lower and upper centering or expanding cone 12.1 and 17.1, and indeed in cooperation with the conical inlet and outlet openings at the top and lower ends of the thread guide elements.

According to FIGS. 4 and 5, a thread passing through the thread lock B opens Knot (thread thickening) the thread channel between the two thread guide elements, against the force of the annular spring 20 (or the magnets 22) to the outside be pressed. The occurring, small lateral pressure medium losses in the knot run are negligible. After passing through the knot through the "thread lock" the thread channel is closed again.

The short while opening the thread channel on the growing Separating surfaces of the thread guide elements acting pressure of the treatment medium does not affect itself, since this pressure accordingly also on the outsides of the builds up both thread guide elements.

For threading the thread through the two thread locks become the thread guide elements 15, 16 by means of the piston 17 against the force of the return spring 19th pushed upward when the piston 17 through the compressed air port 23 with Compressed air is applied. As shown in FIG. 6, the two centering or expanding cone 12.1 and 17.1 in the conical inlet or outlet openings retracted, whereby the two thread guide elements 15, 16 over their entire Length are pressed apart, so that one for the pneumatic thread threading sufficiently large opening cross section is present. For the thread threading the Druckluftinjektor 9 is applied in a known manner with compressed air, one in the area of the thread locks A and B and the pressure chamber. 5 to generate effective suction flow.

After threading the thread of the piston 17 is depressurized, so that the two Thread guide elements 15, 16 and the piston 17 back to their starting position be reset.

The two thread guide elements 15, 16 of the lower yarn lock B are with their lower ends supported on an annular shoulder of the housing 13.

In the embodiment shown in Figures 7-12, the individual Threadlock a first thread guide element 51 in the form of a multi-edge strip, preferably square bar, on whose longitudinal edges in different Distances to the groin axis are flattened. The second thread guide element consists of two angularly arranged support surfaces 52.1; 52.2, against which the outer surfaces located between the flattened edges the square bar 51 by means of an example acting on a lever 55 Spring 54 are pressed.

The two support surfaces 52.1; 52.2 are part of a support block 52, in addition lower and upper seats 52.3; 52.4, between which the square bar 51 in the operating position shown in FIG. 9 by means of sealing rings 60, 61 is supported. The square bar is at its lower end with one to its axle center eccentric blind bore 51.1 and at its top with one to the bore 51.1 axially aligned blind bore 51.2 provided. The holes 51.1 or 51.2 lie opposite coaxially aligned support pins 62 and 63, their projecting into the bores 51.1 and 51.2 ends substantially the Have the shape of a cone. The axes of the pins 62, 63 are eccentric to the Axes of the two blind holes 51.1, 51.2. One on the bottom of the square bar 51 acting compression spring 64 pushes the square bar 51 in the in the Figures 9 and 10 illustrated operating positions against the upper sealing ring 61st

At the one part of the yarn treatment chamber 2 forming, with yarn feeding equipped pressure chamber 59 closes a guided through the support block 52 thread channel 65 at, in the lower region of the support block 52, substantially starting with the lower seat 52.3, axially aligned a thread channel 66th opposite. The two thread channels 65, 66 open into the through the two Support surfaces 52.1, 52.2 and the opposite flattened edge of the square bar 51 formed thread channel 67th

On the support block 52 are for sealing the gap between the square bar 51 and the support surfaces 51.1; 51.2 sealing elements 53 preferably in shape arranged by sealing tabs.

The spring or an analogous element 54 is designed so that a rotation of the square bar 51 around the pins 62, 63 is possible, for which it is a prerequisite that the in the bores 51.1 and 51.2 of the square bar 51 projecting portions of the two Pins 62, 63 have a defined, smaller diameter than the holes 51.1 or 51.2 itself, so that the square bar 51 upon rotation about the pins 62, 63 can escape laterally.

The upper pin 63 carries a piston 63.1, the sealing in a cylinder chamber 68 is guided, in which a pressure medium connection 69 opens. Upon admission the cylinder chamber 68 with pressure medium, the piston 63.1 and thus the pin 63 pressed down against the force of a return spring 70, thereby simultaneously also the square bar 51 against the force of the lower return spring 64 after down is adjusted. Since the axes of the pins 62, 63 laterally offset to the axes the holes 51.1; 51.2 are away from the through the support surfaces 52.1; 52.1 formed corner, the square bar 51 is about the tapered ends the pin 62, 63 moved away from this corner, whereby the thread channel 67 for Purpose of Fadendurchfädelung is increased.

The square bar 51 can according to Figure 11 in retracted into the cylinder chamber 68 Pivot 63 by hand laterally swung out of the support block 52 be, for which the lower sealing ring 60 must have sufficient elasticity. On this way, there is the possibility of square bars with different flattened Exchange edge dimensions against each other. This exchange is not too confused with the example shown in Figure 12 apparent turning a square bar 51, to differently flattened longitudinal edges of the same square bar 51 in comparison with the through the two support surfaces 52.1, 52.2 to bring educated corner.

FIG. 9 shows the yarn F leaving the yarn treatment chamber 59, which, like FIG in the case of the device according to Figures 1 - 6, the between the two support surfaces 52.1, 52.2 and the square bar 51 formed thread channel 67 seals. At the inlet-side end of the treatment or pressure chamber 59 is a corresponding System as described with reference to FIGS. 7-12.

To damage when entering a thread thickening Fn in the thread channel 67 To avoid threading and threading a thread in the thread channel 67 to facilitate, the flats of the square bar 51 in the range of at least one Front side of the square bar 51 chamfered inwards.

LIST OF REFERENCE NUMBERS

A + B

thread locks

1

Coil support frame

2

Kitchen sink

3

drive roller

4

Traversing thread guide

5

pressure chamber

6

Compressed air inlet

7

jet

8th

baffle

9

compressed air injector

10 + 11

Yarn feeding stations

12

connecting branch

12.1

expanding cone

13

cylinder housing

14

pipe socket

15

Thread guiding element

15.1

groove

16

Thread guiding element

16.1

groove

17

piston

18

Return spring

19

Return spring

20

Ringfeder

21

ring seal

22

magnets

23 24

Compressed air inlet

25

thread return roller

51

Polygonal square bar

51.1 / 2

blind holes

52

mounting block

52.1; 52.2

support surfaces

52.3; 52.4

lower / upper seat

53

spring elements

54

Spring - tension spring

55

lever

59

Pressure chamber portion

60.61

seals

62

support posts

63

Retaining plug 63.1 Piston

64

compression spring

65

thread channel

66

thread channel

67

thread channel

68

cylinder chamber

69

Fluid port

Claims (25)

Process for the treatment of a thread with a gaseous or vaporous medium, characterized in that the thread is separated by a thread guide element (15, 16; 51, 52 or 51, 52.1, 52.2.) Which is adjustable between spring and magnetic force Threaded channel mounted in a pressure chamber section (5) of a relation to the environment substantially sealed yarn treatment chamber (2; 59) can be fed to the gaseous or vaporous medium under pressure, and that the thread then by another, between two elongated , pulls against thread or magnetic force relative to each other adjustable thread guide elements (15, 16, 51, 52) mounted thread channel, wherein the cross section of the two thread channels on the thickness (titer) of the thread tunes such that the thread passes through these channels substantially smoothly and largely seals against pressure losses from the yarn treatment chamber. Method according to claim 1, characterized in that the thread can be passed through the thread treatment chamber and the pressure chamber section essentially without tension by passing the thread through the thread treatment chamber through two thread delivery mechanisms. Apparatus for treating a running yarn with a gaseous or vaporous medium, in particular for carrying out the process according to claim 1, characterized in that it comprises a yarn treatment chamber (2; 59) which is to be passed from the yarn and substantially sealed with respect to the environment is provided with a yarn inlet opening and a yarn outlet opening, and that each of these openings a yarn lock (A or B) is assigned, on the one hand permits a passage of the thread including thickening of the thread, but on the other hand, the respective opening, including the passing through the yarn slit thread opposite largely closes the atmosphere, and that the yarn treatment chamber (2 or 59) comprises a pressure chamber section (5; 5) with a connection (6) for feeding the pressurized medium. Apparatus according to claim 3, characterized in that each yarn sluice elongate, in its longitudinal direction a yarn passage channel limiting thread guide elements (15,16), of which at least one yarn guide element is adjustable relative to the other yarn guide element against a restoring force substantially perpendicular to the yarn running direction. Apparatus according to claim 4, characterized in that the two thread guide elements (15, 16) have a particular semicircular cross-section, wherein at least one thread guide element (15 or 16) in the region of the abutting separating surfaces of the two thread guide elements (15,16) in the longitudinal direction extending recess (15.1 or 16.1), whose cross-section is matched to the thickness (titer) of the thread to be treated. Apparatus according to claim 5, characterized in that the two thread guide elements (15,16) within a cylinder housing (13) are mounted displaceably against spring force, and in that provided in the region of the thread inlet and yarn outlet sides of the thread guide elements (15, 16) centering and spreading are, by means of which the two thread guide elements, when they are displaced in the longitudinal direction against spring force, are moved away from each other. Apparatus according to claim 6, characterized in that each centering and spreading device in the region of the separating surfaces of the two thread guide elements (15, 16) concentric to the thread passage direction, tapering from outside to inside cone bore and on the other hand in the direction of the two thread guide elements (15, 16) tapered truncated cone (12.1 or 17.1), of which one truncated cone (17.1) relative to the other truncated cone (12.1) is displaceable. Apparatus according to Claim 7, characterized in that each displaceable truncated cone (17.1) is part of a piston (17) guided in a cylinder bore, which has an annular shoulder in the region of the truncated cone for temporarily supporting one of the thread guide elements and against the force of a restoring spring (18). in the direction of the associated thread guide element is displaceable. Apparatus according to claim 8, characterized in that the two thread guide elements (15, 16) against the force of a return spring (19) are displaceable in the direction of the pressure chamber. Apparatus according to claim 4, characterized in that the two thread guide elements (15, 16) by means of at least one O-ring (20) are pressed against each other. Apparatus according to claim 4, characterized in that the two thread guide elements are pressed against each other by means of at least one spring, in particular annular spring. Apparatus according to claim 4, characterized in that the two thread guide elements are held together magnetically. Apparatus according to claim 4, characterized in that the one thread guide element (51) has the shape of a polygonal strip, preferably square strip (51), whose longitudinal edges are flattened at different distances to the strip center, and that the second thread guide element (52) for Receiving the first thread guide element (51) has two in a support block 52 angularly mutually arranged support surfaces (52.1; 52.2), abut against the located between the flattened edges outer surfaces of the first thread guide element (51) sealingly. Apparatus according to claim 13, characterized in that the first thread guide element is pressed by spring force against the support surfaces (52.1; 52.2) of the second thread guide element. Apparatus according to claim 13, characterized in that the first thread guide element (51) for enlarging the thread channel (67) formed between the two support surfaces (52.1; 52.2) and the opposite flattened edge of the thread guide element (51) and for rotation of the thread guide element (51). is laterally adjustable with respect to the corner formed by the two support surfaces (52.1, 52.2). Device according to claim 13, characterized in that the thread guiding element (51) has blind bores (51.1; 51.2) coaxial with each other on the opposite upper and lower end faces, in which pins (62, 63) with cones arranged eccentrically to the axes of the two blind bores projecting ends protrude, one of which a pin (63) for lateral fixing of the thread guide element (51) against spring force adjustable in the zugeorndete blind bore (51.2) is retractable. Device according to one of Claims 13-16, characterized in that the mounting block (52) has two seat surfaces (52.3; 52.4) aligned perpendicular to the support surfaces (52.1; 52.2) for the end faces of the first thread guide element (51). Apparatus according to claim 17, characterized in that the first thread guide element (51) by means of sealing rings (60, 61) on the seat surfaces (52.3, 52.4) is supported. Apparatus according to claim 18, characterized in that the first thread guide element (51) in the region of the lower seat surface (52.3) by a return spring (64) is supported. Apparatus according to claim 16, characterized in that the one pin (63) carries a piston (63.1) which is supported by a return spring (70) and which is displaceable in a cylinder chamber (68) provided with a pressure medium connection (69). Apparatus according to claim 13, characterized by sealing tabs (53) attached to the support block (52), which cover the gaps between support surfaces (52.1, 52.2) and in the first thread guide element (51). Apparatus according to claim 15, characterized by in the support block (52) arranged on both sides of the thread channel (67) subsequent thread channels (65, 66). Apparatus according to claim 13, characterized in that the flattenings of the first guide element (51) are chamfered inwardly in the region of at least one end face. Device according to one or more of the preceding claims, characterized in that yarn delivery devices (10, 11) are arranged inside the yarn treatment device in order to convey the yarn through the yarn treatment device essentially without tension. Device according to one or more of the preceding claims, characterized in that the yarn sluice arranged at the outlet side relative to the yarn treatment device is associated with a suction air source, preferably in the form of a compressed air-operated injector (9).

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