JPS6410611B2 - - Google Patents

Abstract

A texturising nozzle for synthetic filaments is openable and closable to facilitate lacing up. The nozzle comprises a two-part carrier structure with the parts (10, 12) movable towards and away from each other to open and close the nozzle. The thread path through the nozzle is defined by means of insert elements (18, 20) releasably mounted on the carrier structure at least in that region of the path in which the main texturising step is performed. A thread infeed passage (24) and a (preferably single) fluid infeed passage bring thread and treatment fluid together at a junction location, and a guide passage (26) (which preferably widens in the downstream direction) leads the thread and fluid from the junction location to the texturising region (28).

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a yarn textured processing machine equipped with a textured processing nozzle. The yarn passes through the texturing nozzle and travels substantially along a predetermined yarn path. During passage through the texturing nozzle, the yarn is subjected to the action of a yarn treatment fluid, typically a gas or steam. "Yarn" as used herein refers to all continuous fiber elements, in particular, but not exclusively, whether monofilament or multifilament;
Figure 3 shows a filamentary synthetic fiber material.

[Conventional technology]

The invention relates more particularly to a texturing nozzle of the generally known type for use in the general process of texturing yarn by the action of a treatment fluid, the nozzle being provided with a texturing chamber. , in which the main textural action takes place. This chamber has an elongated shape and forms part of the thread path passing through the nozzle. The chamber wall is perforated through which the processing fluid is discharged, usually in a direction transverse to the yarn path. The nozzle is equipped with a device for combining the fluid and the thread and directing it into the chamber. Before entering the texturing chamber, the fluid may be configured to advance the yarn and force the yarn into the chamber, but after the fluid enters the chamber, the fluid may be pumped through holes in the chamber wall. The action of escaping and advancing this thread is at least substantially reduced. The chamber is designed to generate intense turbulence and/or vibrations of the fluid within the chamber, possibly at a resonant frequency. The fluid may be hot steam or gas, preferably hot air, but steam may also be used. The temperature of the fluid after the yarn and fluid are combined and before entering the textyard processing chamber and the time that the fluid and yarn are in the nozzle are such that the yarn is preferably brought close to a predetermined temperature that varies depending on the yarn material. It is preferable that the temperature is such that it can be heated very close to the temperature at which it becomes plasticized. The holes in the chamber wall are preferably in the form of long slits distributed equally in the direction of the yarn path around the yarn path.

An example of a textured nozzle of the general type described above, with a preferred axially elongated slit in the chamber wall, is disclosed in U.S. Pat.
No. 3714686, No. 3908248, No. 3950831, No.
No. 4014084, No. 4100659 (BASF), US Pat. −und
Apparatebau GmbH.).

[Problem to be solved by the invention]

There are particular concerns regarding the nozzles required for processes such as texturing. In other words, textured processing is relatively complex, and it has a large effect on the various physical properties of the yarn material, such as dyeability. In such nozzles, slight variations in the morphology between nozzles or over time of a single nozzle will cause significant variations in the physical properties of the yarn. At the very least, this will cause difficulties for the end users of yarn.
Such yarns result in products of inferior quality. For example, a fabric with streaks will be produced based on the dye spots of the yarn used. Also, creating a series of textured nozzles and uniformly controlling their operating characteristics presents a very demanding problem of accurate manufacturing within acceptable manufacturing costs.

A nozzle which is made openable and closable to facilitate threading has already been proposed in German Patent Application No. 2722257. This nozzle also
It has replaceable members that define a textyard processing chamber. However, these members are not slotted and there is no clear explanation of how they are retained in their respective support members. Each member is obviously of complex construction, with a sieve-like cover over a perforated base member, and it is unlikely that such members can be made reproducibly and uniformly.

The present invention aims to provide a particular type of textured nozzle that allows precise construction in order to impart well-controlled and reproducible, i.e. stable, properties to the textured yarn.

[Means to solve the problem]

An object of the present invention is to provide a texturing nozzle for texturing a yarn while the yarn moves through a generally straight passage of a yarn processing nozzle, wherein the yarn to be textured is processed at a confluence position on the passage. and a processing fluid, and a wall portion located on a passage downstream of the joining position in the direction of yarn movement and provided with a hole for discharging the processing fluid in a transverse direction with respect to the upstream passage. a processing chamber, a guide path constituting a portion of the passage between the merging position and the textured processing chamber, and a main body member that joins each other in a complementary relationship to form an elongated through space including the passage. and at least one insert member located within the through space when the main body members are joined and removably fixed to the main body member,
The insert members cooperate to form a textured processing chamber between the two walls, and the textured processing chamber is surrounded by an exhaust chamber formed by the space on the outside of both walls. The insert member has an elongated wall along the passageway, the wall joining at least one outwardly projecting support, each of which extends within the space to a corresponding body. The wall portion is engaged with the support surface of the member to support the wall portion with a space provided between the main body member, and extends in the longitudinal direction of the passageway and communicates between the textured processing chamber and the exhaust chamber. This is achieved by a texturing nozzle characterized in that the wall is provided with a plurality of slots for the purpose of texturing.

It is preferable to provide a plurality of insert members that are located within the through space when the respective main body members are joined and are removably fixed to the main body members. That is, it is preferable to provide an insert member that defines a passage portion upstream of the merging position when viewed in the thread flow direction.

〔Example〕

As an example of the invention, a two-part retractable nozzle according to the invention and modifications thereof will be described in detail below with reference to the accompanying drawings.

1 to 3, the nozzle includes a metal body made up of two members 10, 12 that are complementary to each other (FIG. 3). The surface 16 on one side of the groove 17 of each member is planar. Surface 16 of member 10 and surface 16 of member 12 are hermetically joined together to form a tubular body having through hole 14 formed by groove 17 (FIG. 3). The sealing surface of body member 10 is shown in FIGS. 1 and 2, and the sealing surface of member 12 is similarly shaped. Each member 10,
12 constitutes a holding member of the insert, as will be explained later. In use, the insert resides within an open-ended elongated space provided in the through hole 14. There is a yarn path in the axial direction of this through hole 14, and during use, the yarn to be textured is drawn in the downward direction in the figure through this yarn path. Next, the configuration of the thread path will be explained. For convenience of explanation, expressions such as "upper", "lower", "upper side", and "lower side" are used in the drawings, but the actual arrangement of the nozzle during use varies, and the It's not an expression.

Three insert members are placed in the grooves 17 of each member 10,12. As with the members 10 and 12, these insert members are formed in a mutually complementary relationship with their mating insert members. Since the insert members attached to both members 10 and 12 to be combined have the same structure, the insert member inserted into member 10 shown in FIG. 1 will be described in detail. A feed insert member 18, a guide insert member 20, and a textured processing chamber insert member 22 are arranged in the direction in which the yarn passes through the nozzle when the nozzle is in use, as indicated by the arrow at the top of FIG. Each insert member has a groove forming one half of the central throughbore, which groove, together with a sealing surface coplanar with surface 16, defines a thread path by means of the nozzle assembly. Part 1
When 0 and 12 are joined, both insert members 18
is the first insert assembly (FIG. 3) that constitutes the yarn feeding path 24, and both insert members 20 are the first insert assembly that constitutes the yarn feeding path 24.
6 and both insert members 22 constitute a third insert assembly that constitutes the textured processing chamber 28. Feed path 24, guide path 26, texture yard processing room 2
8 forms a thread path. Both insert members 20 for the guideway are arranged to form a hole 14 in the second insert assembly surrounding the guideway 26 for receiving a central tube (guide tube) having an outer diameter smaller than the diameter of the insert and having flanges 29 at both ends. It is structured as follows. The flange 29 joins the wall of the through hole 14 to hold the guide tube in a stable position within the through hole 14. In this way, the guide tube is surrounded by a chamber 30, and the member 10 is provided with a vent hole 32 opening into the chamber 30, through which the processing fluid is fed into the nozzle when the nozzle is in use. . An opening 34 is provided in the upper flange 29 of the guide tube, and a chamber 3 is provided as a communication path connecting the yarn feed path 24 and the guide path 26.
Processing fluid is allowed to flow into 6. Each insert member 1
In the recess 40 formed in 8, the recess 40
An auxiliary member 38 is press-fitted so that its position can be adjusted in the axial direction. Both auxiliary members 38 of members 10 and 12
constitutes the lower end of the feed path 24, as shown in FIG. By adjusting the axial position of the auxiliary member 38 with respect to the insert member 18, the axial distance between the lower end of the feed path 24 and the upper end of the guide path 26 can be adjusted. The size of this axial spacing regulates the amount of processing fluid that is allowed to flow into the guide path 26 from the chamber 36 along with the yarn fed from the feed path 24. In this configuration, the feed passage 24, the fluid introduction chamber provided with the chamber 36 and the ventilation hole 32, the chamber 30, and the opening 34 constitute a device for combining the processing fluid and the yarn. The above-described apparatus for combining treatment fluid and yarn is generally according to the prior art.

Each insert member 22 has a wall portion 40 and a flange 4
1,43. Each flange is secured by screws 42 in a snug fit, as shown in FIG. Both wall portions 40 constitute a textured processing chamber wall having an outer diameter smaller than the diameter of the through hole 14.
It is securely supported by flanges 41 and 43 at both ends. The tubular wall formed by wall portion 40 is provided with twelve longitudinally extending slots 44. As shown in FIG. 2, each insert member 2
2 has five fully-shaped slots and two half-shaped slots that are formed on the joint surfaces of both insert members 22 and become fully-shaped slots when both insert members 22 are joined. . Each slot 44 is formed from one end of each insert member 22 to the other end, that is, between the flanges, and radially penetrates the wall between the flanges. These slots provide communication between the textured processing chamber 28 and a chamber 46 formed by the through hole 14 around the wall 40. The preferred number of slots is 10 to 14.

In this way, the lower end of the guide path 26 and the through hole 1
The portion of the through hole 14 between the lower end of the wall 4 itself
0 constitutes a separated space, and is surrounded by an exhaust chamber 46 to constitute a textured processing chamber 28. Each member 10, 12 is provided with a vent hole 48 that communicates with an exhaust chamber 46, and when the nozzle is in use, an exhaust passage 50 is connected to each vent hole 48 so that the processing fluid and yarn can be contained during pretreatment of the yarn. All the steam generated from the waste and flowing into the exhaust chamber 46 from the textured processing chamber 28 is guided and discharged. In order to evacuate process fluids and vapors from the exhaust chamber 46, a suitable suction device (not shown) is connected to the exhaust passage 50 to aspirate the process fluids and vapors under suitable control conditions and evacuate the process fluids and vapors appropriately. Discharge to a location. During actual operation, the heat exchanger 51, schematically illustrated by means of exhaust passages,
At least part of the heat of the discharged processing fluid may be recovered through the vent hole 32 and may be part of the heat source of the processing fluid supplied from the vent hole 32 .

Each member is also provided with a stud 52 which mounts the nozzle to a suitable support structure (not shown) on the texturing equipment. The stud support members of the support structure are configured to be relatively movable so that the nozzle can be opened and closed. A suitable device for enabling such relative movement of stud support members is described in co-pending application European Patent Application No. 80105347.1. Each body portion is also partially enclosed within a casing 54 constructed of a material with low thermal conductivity to protect the operator from hot metal parts of the body portions 10, 12 during use.

The nozzle shown in FIG. 4 is a first modification of the nozzle shown in FIG. That is, in this case, the guide insert member 20 is not provided. Two grooves 60 are provided in the guideway in this embodiment. Only one of the two grooves 60 is shown in FIG. The cross section of these grooves is groove 17 in FIG.
These grooves are smaller than the main body member 10A.
(or 12A). Sealing surfaces are formed on both sides of the groove. The enlarged sealing surface is provided with a recess 61 for receiving a guide member in another body member. Both ends of the groove 60 are enlarged so that when the two main body members are assembled with the surfaces 16A joined in a sealed manner, upper and lower cavities are formed. The lower cavity incorporates an insert assembly consisting of an insert member essentially the same as the insert member 22 of FIG.
6 is formed. The means for combining the treatment fluid and thread are different from those shown in FIGS. 1-3.
The above means in the case of FIG. 4 will be explained below.

The above-mentioned cavity is also provided with an assembly of an insert member 62, which together with the two grooves 64 constitutes a thread feed path. Each groove 64 has three enlarged portions 6.
6 is formed. These enlarged portions 66 act as labyrinth seals to prevent processing fluid from flowing back through the thread feed path. However, these enlarged portions 66 may be omitted if desired. Grooves 68 are formed in the outer surface of each insert member 62, and in the nozzle assembly these grooves 68 form an annular groove around the thread feed path. There is an inlet port (not shown) on one side of the main body member.
A processing fluid is supplied into the annular groove through this inlet.

At the lower end of the yarn feeding path, corresponding to the enlarged portion 72 formed at the upper end path of the guide path formed by the groove 60,
A frustoconical enlarged portion 70 is formed. A predetermined number of fluid supply holes 74 are provided to communicate the annular groove formed by the groove 68 and the enlarged portion 70 . Fluid is blown out from these fluid supply holes 74 toward the enlarged portion of the guide path. The two enlarged portions 70, 72 thus together form a merging chamber in which the yarn and the treatment fluid merge and are then passed into the guide channel. Fourth
Although two of the four fluid supply holes 74 are shown in the figure, the other two, although not shown, are provided in the main body portion 12A having the same structure as the main body member 10A. However, this is not a preferred arrangement. An embodiment of this arrangement will be described with reference to FIG.

FIG. 5 is an axial cross section of the feeding portion of the nozzle, which is at a phase angle of 90° with respect to the cross section of FIG. Therefore,
Main body members 10A, 12A, main body members 10A and 12
The joining line 76 of A is visible. The cross section of each groove 60 is triangular, and the guide path 26A formed between both grooves 60
has a rectangular cross section. For this implementation,
The yarn feeding path 64A has a simple configuration consisting of only a groove with a triangular cross-sectional shape formed in an insert member 78 attached to the main body member 12A. That is, the insert member 8 attached to the main body member 10A
The surface facing the yarn feed path 64A of No. 0 is a flat surface. The insert member 78 is not provided with an outer peripheral groove similar to the groove 68 described above. The insert member 80 is also not provided with an outer circumferential groove, but is provided with a recess 82 instead. Fitted into this recess 82 is an O-ring 84 disposed around the air inlet of the hole 86 . Recess 82 is fully integrated with fluid supply channel 88 . The fluid supply path 88 is arranged in the main body member 10A by an appropriate method (details of the arrangement method are not shown). The fluid supplied from the fluid supply path 88 is supplied to the hole 8
6 and flows into the hole 87. The upper part of the hole 87 located above the hole 86 is the insert member 8.
0 and is threaded for screwing in a closing screw 89 with a sealing washer 91. This opening in bore 87 is a working opening and is provided solely for the purpose of modifying the lower portion of bore 87 for the purposes described below, and is provided by screw 89 or other conventional closure means during normal use of the nozzle. It's blocked off. The lower portion of the hole 87 located below the hole 86 is composed of a threaded portion 90 and a smooth portion 92 beyond which the thread is not cut. A hole 94 of relatively small cross section communicates the smooth portion 92 with a recess 98 formed in the bottom surface of the insert member 80. Further, the lower end of the hole 94 opens into an enlarged portion 72 formed at the upper end of the guide path. Hole 9
The angle X between the axis of 4 and the side of insert 80 adjacent hole 94 is made as small as possible. Inside the hole 94 is a tube 100.
are fitted and secured in place by any suitable method. In the illustrated example, this fixing method is such that a compressible elastic washer 102 is sandwiched between the annular end surface of the cavity 87 and the bush 104. The hollow cylindrical nut 106 screwed into the threaded portion 90 is further screwed into the bush 104.
Push the elastic washer 1 toward the bottom of the cavity 87.
02 is compressed, and the tube 100 is fixed by tightening it to the outer surface of the tube 100 with a washer 102. Hole 86 and tube 100 are communicated by an inner bore of nut 106. Tube 100 is held in relation to insert member 80 such that the distal end of tube 100 projects slightly into enlarged portion 72 . Of course, in order to reliably determine the relative position of the tube 100 with respect to the insert member 80, the tube 100 may be formed of a tube of a predetermined length, and the tube may be provided with means for positive and positive positioning. can. In this embodiment, hole 96 in tube 100 is the only fluid passageway. Moreover, the insert member 80 in this case additionally has the function of a support member for the tube 100, to which the tube 100 is removably fixed by the above-mentioned fixing means. This fixing means is a sealing member, in this case washer 1.
02, and is designed so that all the supplied fluid passes through the pipe 100 without leaking.

In the embodiment of FIG. 5, the pipe 1 which is the fluid passage
The shape of the 00 hole 96, particularly its cross-sectional dimension, is selected so that the flow rate of the processing fluid at a predetermined pressure is a required flow rate. By replacing the tube 100 with a hole 96 having a different effective cross section, the flow rate of the process fluid can be changed. The closure screw 89 is removed and the tube 100 can be replaced through the working opening in the upper end of the hole 87. The ability of such a pipe to adjust the flow rate of the process fluid supply is very large, and an external flow rate adjustment device such as a throttle valve in the fluid supply path 88 is not required. However, the present invention does not limit the adjustment of the processing fluid supply amount by a combination of the flow rate adjustment tube 100 and other external flow rate adjustment devices. It is preferable that each nozzle is provided with several flow rate adjusting tubes 100 having different hole shapes, that is, a set of flow rate adjusting tubes 100 having different hole cross-sectional dimensions, pipe lengths, and/or hole shapes.

The cross section of the hole 96, which is the fluid passageway of the tube 100, is preferably circular. Although the illustrated example tube 100 has the same cross-sectional shape over its entire length, this need not be the case. The length of the tube 100 is
It is preferable to consider other operating conditions, such as the type of fluid to be treated, the supply pressure, etc., and select such a method that the fluid is blown out from the outlet end of the pipe in a straight line with as little turbulence as possible. For this purpose,
Adjustment with relatively short orifices is inadequate. A short orifice will create uncontrollable turbulence at the upstream and downstream ends of the orifice, and such turbulence will disturb the uniform textured process.
There is a risk that the textured processing state may vary from time to time and from nozzle to nozzle. Furthermore, in order to avoid unforeseen disturbances when the fluid is sent from the tube 100 to the guide path formed by the groove 60, the tube 100 is aligned as much as possible with the axis of the guide path. In other words, the angle X is made as small as possible, and at the same time, the yarn feed path 64A is provided only in the insert member 78. or,
In order to send fluid to the guide path without causing turbulence, the shape of the merging area formed by the enlarged portion 72 is tapered toward the guide path as shown. However, the enlarged portion formed on the main body member 12A may be omitted as shown by the chain line in the figure.

An example of the dimensions of each component of the embodiment shown in FIG. 5 is shown below.

Processing fluid Hot air (air) Supply fluid pressure in cavity 87 Length of 6 ^- bar pipe 100 12 mm Angle It is desirable that the angle is 30° or less, and it is very good if it is 20° or less. As a manufacturing problem, it is usually considered impossible to reduce the angle X to less than 10 to 12 degrees. The length of the tube 100 is preferably at least 4 mm, preferably in the range of 6 to 30 mm.

The lower end of the tube 100 is preferably placed as close as possible to the line of thread passage through the nozzle without risking contact with the thread. In order to reliably control the relative position of the lower end of the tube 100 with respect to the yarn path, for example, a flange may be provided at a portion away from both ends of the tube, or a bush 104 may be placed between the tube 100 and the lower end.
It may be fixed to the pipe 100 or formed integrally with the pipe 100.

Although it is possible to pass a passage through the closing screw 89 and use this passage to send the processing fluid into the pipe 100, it is better to use the method shown in the figure, and it is better not to use the closing screw 89 to send the processing fluid. Good.
If a method is adopted in which the processing fluid is sent into the tube 100 through the closure screw 89, replacing the tube 100 becomes complicated. That is, it may be necessary to remove the fluid supply tube from the closure screw in order to remove the closure screw and allow replacement of the tube 100, and/or
Alternatively, flexible fluid supply tubing may have to be used. Furthermore, another method for replacing the tube 100 is to remove the insert member 80 and replace the tube from the lower end (downstream portion) of the hole 94, but this method is more complicated. Furthermore, it is also possible to use various insert members 80 with holes 94 of different diameters instead of using the pipe 100, but it is possible to use various insert members 80 with various holes 94 for each nozzle. Having only one set is disadvantageous in terms of cost.

The thread path passing through the nozzle is preferably straight, and the processing fluid sent through the fluid supply path may join the thread path at a small angle.

A reverse arrangement of the yarn path and the fluid supply path is disclosed in U.S. Pat. is highly complex, the nozzle is susceptible to damage, and the system is disturbed at locations where the yarn path is bent to merge with a straight fluid supply path.

Each of the embodiments shown in FIGS. 1-5 has the following advantages over the prior art.

1. Related to the Textured Processing Chamber a. Since each insert member 22 is easy to handle, the grooves forming the inner surface of the textured processing chamber and the slots in the walls of the textured processing chamber can be economically and accurately processed.

b Since flanges are integrally formed at both ends of the insert member, the groove structure at both ends of the insert member is strong, and both flanges are connected to the surface of the main body member 10 or 12, so that the insert member is not attached to the main body member. Since it is securely held, it is possible to reduce uncontrollable vibrations occurring at both ends of the textured processing chamber. This uncontrollable vibration has a particularly detrimental effect on the upstream end of the textured processing chamber and tends to occur particularly at the downstream end of the textured processing chamber, whose structure is often weak and relatively poorly supported. There is.

c The main body member (holding member) is conveniently used to surround and support the textured processing room, improving safety and reducing noise; Economical efficiency can also be improved by eliminating the above and adopting an enclosed structure.

d. Even if the insert for the textured processing chamber is damaged during operation or no longer functions satisfactorily for any reason, or even if it is necessary to change the textured processing process, replace the nozzle assembly. This is not necessary, and it is sufficient to simply replace the insert member 22 that is related to the cause of the replacement described above. Similarly, even if a processing failure occurs during the complicated manufacturing process of this insert member, it is only necessary to discard the insert member whose processing failed, thereby reducing waste in the manufacturing process.

2 Related to the processing fluid supply section The difficulty in this part is adjusting the processing fluid supply to the nozzle and eliminating uncontrollable sources of disturbance in the device, such as turbulence. Both of these factors have a very close relationship with the machining accuracy of the fluid supply section of the nozzle. Therefore, advantage a above regarding the textured processing chamber also applies in this case. The same applies to advantage d.
The advantages of insert assembly are exhibited in all three illustrated embodiments (Figs. 1, 4, and 5), but in the case of the embodiment shown in Fig. 5, the structure is relatively simple. , the effect is even greater. All supplied fluid passes through a single flow path that is precisely fabricated separately from the nozzle assembly. In this case, unlike the case in which four channels are provided in the embodiment of FIG. 4, it is only necessary to precisely align a single channel with the guide path 60 and the yarn feeding path 64A. Textured processing characteristics can be easily adjusted by replacing the plug-in tube 100 with another tube 100 in which the effective cross section of the hole 96 serving as a fluid path is different. On the one hand, the holes 96 can be manufactured with very high precision, thus ensuring accurate treatment fluid supply regulation without the need for other complex flow regulating devices external to the nozzle.

3. Guide path related a. The effect of the insert is not so remarkable for the guide path, and in order to eliminate the need to form the outer surface of the insert member to combine each insert member with the respective main body member, the fourth,
As in the example shown in FIG. 5, it is preferable to form a guide path in the main body member itself. However, in some cases it may be desirable for temperature regulation to surround the guide channel with a heating fluid, as in the example of FIGS. 1, 2 and 3. Regardless of whether an insert is used to form the guideway, the inner surface of the guideway is preferably a non-curved surface because turbulence tends to be reduced when the guideway is straight.

It is clear from the scope of the illustrated embodiment that various modifications can be made within the scope of the invention. Furthermore, modifications other than the illustrated embodiments may be practiced within the scope of the invention. For example, instead of forming the hole in the replaceable tube 100 with a constant cross-sectional shape as in the illustrated example, it may be formed with a slightly tapered conical shape. In this case, the holes are tapered in the direction of fluid flow. In other words, the cross-section of the downstream end of the hole is minimized, with a small angle between the axis of the hole and a straight line contained in the wall of the hole. The maximum practical angle on one side of this taper would be about 5°. By forming the fluid supply path into a tapered shape in this manner, the fluid flow velocity at the upstream end of the pipe can be reduced while maintaining the fluid flow velocity at an appropriate value at the downstream end of the pipe, thereby reducing friction loss. Still other modified embodiments will be described with reference to FIGS. 6 to 11.

FIG. 6 is a modification of the embodiment shown in FIG. In this case, the main body member 12B is replaced with the main body member 1 in FIG.
It is shown in a plan view similar to the illustration of 0A. In this embodiment, the heat insulating cover 54 shown in FIG. 4 is omitted. In the figures, like reference numbers indicate similar or identical parts. Only major modifications to the embodiment shown in FIGS. 4 and 5 will be described.

The first modification concerns the guideway formed by the groove 60A in the nozzle assembly. In the embodiment shown in FIG. 6, the cross section of the guide path is uniformly increased in the downstream direction. That is, in FIG. 6, the cross section of the guide path is uniformly increased from the upper end to the lower end. The merging point where the yarn and treatment fluid meet is at the uppermost end of the guideway, but not in the form of an enlarged merging chamber as shown at 72 in the embodiment of FIG. The cross-section of each groove 60A is triangular, so that the cross-section of the guideway is square, as in the embodiment of FIG. 5, but the enlargement of the guideway in the embodiment of FIG. It has to do with doing well. When the guide path is formed into a conical shape,
The flow rate of the processing fluid at the entrance of the guideway is high, and the overall effect of feeding the processing fluid within the guideway is increased. This increases the tension applied to the yarn upstream of the nozzle, and improves the running condition of the yarn upstream of the nozzle. However, if the degree of expansion increases beyond a certain level, the running condition of the yarn will not be improved beyond a certain limit. The degree of expansion will be explained below.

Enlarging the guide path improves the opening of the filaments in the case of multifilament yarns before the yarn enters the texturing chamber. When the opening state is good, both the yarn feeding action of the processing fluid to advance the yarn along the guide path and the texturing action in the textured processing chamber are performed more effectively on each filament.

With reference to FIG. 8, the appropriate degree of expansion of the guide path will be discussed. For convenience of explanation, the guide path is shown as a truncated cone. It is assumed that the area of the upper base of the small diameter d and the area of the lower base of the large diameter D of the truncated cone are equal to the cross-sectional area of the upstream end and the cross-sectional area of the downstream end of the guide path, respectively. It is assumed that the height L of the truncated cone corresponds to the length L of the guideway. The degree of expansion of the guideway is expressed by the symbols in Figure 8 as follows: E=(D-d)/L×100%.

Here, E=degree of expansion, expressed as a percentage of the length L.

As a result of the study, it was found that the running condition of the yarn was improved while E increased from 0 to 1.0%.

Even if E is increased further than this value, at least E
= 1.2%, the performance of the textured processing chamber does not decrease. However, as a result of studies, the most significant improvement is usually seen in the range of E=0.6 to 0.7%. If the value of E is set to a value greater than this range, it may become difficult to closely match the cross section of the guideway and the textyard processing chamber.

In each case, the enlargement of the guideway in the embodiments shown in the figures is smooth and uniform over the entire length of the guideway. For example, if the inner surface shape of the guideway is discontinuous, as in the case of stepped expansion, turbulence is likely to occur.
Therefore, it is undesirable. Although it is acceptable for the degree of enlargement to vary smoothly over the entire length of the guideway, the formation process becomes relatively complex, and it is difficult to form many guideways exactly the same so that there is no variation between each nozzle. There is a problem. Although a part of the guideway may be expanded in the longitudinal direction, expanding the guideway over the entire length increases the average flow velocity of the fluid as a whole over the entire length of the guideway, so it is better to expand over the entire length of the guideway. good. The enlarged state of Fig. 8 is, of course, the 3rd and 5th
It is also applicable to the illustrated embodiment.

Although it is not clear in FIG. 6, the cross section of the yarn feeding path 64B, which is formed by a groove formed only in the feeding insert member 78A, also expands in the length direction. Although the entire length of the yarn feeding path is not enlarged, the upstream side from the position indicated by 108 in FIG. 6 is enlarged. The cross section of the portion downstream of position 108 of the yarn feed path 64B is a uniform cross section and is of the smallest size within limits sufficient to pass the required yarn without obstruction. In this way, backflow of processing fluid through the thread guide path is reduced. Regardless of the type of processing fluid, if the processing fluid backflows and leaks through the yarn feed path, it will have a "reverse feed" effect on the yarn, and will have the opposite effect on the action of feeding the yarn into the guide path. It is desirable to reduce this backfeeding effect as much as possible, and this objective can be achieved by enlarging the yarn feed path as described above. If the degree of expansion of the yarn feeding path is expressed by a truncated cone similar to the truncated cone shown in Figure 8, satisfactory results can usually be obtained when the angle on one side of the taper is in the range of 2 to 5 degrees. .

FIG. 7 is a diagram showing more clearly an embodiment that is a further modification of the embodiment of FIG. 6 compared to the embodiment of FIG. 5. The yarn feeding path 64B has two grooves 60A.
The guide path 26B is arranged so as to be offset from the guide path 26B. That is, the thread feed path 64B and the guide path 26B do not have a common plane of symmetry. As seen in FIG. 7, the longitudinal axis of thread feed path 64B is displaced to the left of the longitudinal centerline of groove 60A in body member 12B. Although not clearly shown, unlike FIG. 7, FIG. 6 is a view of the nozzle viewed from the lower end side, so the direction of displacement of the center line in FIG. 6 is to the right. As a result of arranging the yarn feed path to be offset relative to the guide path in this way, the yarn is pushed to one side of the guide path by the incoming airflow, that is, to the left in FIG. This offset relationship to the fluid supply channel must be such that the incoming fluid acts to push the thread to one side. In the arrangement of FIG. 5, in which the yarn feed paths are arranged symmetrically with respect to the longitudinal centerline of the guide path, the yarn is sometimes on one side, sometimes on the other side, and sometimes on the other side. I found myself being pushed towards the top of the road. Such conditions cause increased variability in the textured processing characteristics over time within each nozzle and among all nozzles of the textured processing machine.

In FIG. 6, the texturing insert is omitted and the entire downstream groove 110 is visible. A portion of the upstream groove 112 is also visible in FIG. 6, and a yarn feed insert member 78A is disposed at an operational position within the upstream groove 112. 6th
In the illustrated embodiment, a notch is formed at the lower end of the upstream groove 112 to ensure a sealing connection between the body member and the insert member 78A on a relatively narrow sealing surface 114 surrounding the yarn feed path and guide path. There is. A similar cut is also formed in the groove 110.

In FIG. 9, insert member 22A is supported by one or more adjustment screws 118 that engage flange 43A away from the base of trough-shaped groove 110A. The adjustment screw 118 is inserted into a suitable screw hole 120 formed in the main body member 12C.
It is screwed into. The insert member 22A is 1
With one or several fixing screws 122, the groove 110A
is fixed in horizontal alignment with the guideway. The illustrated screw 122 is screwed into a threaded hole in flange 43A through a relatively loose hole 123 provided in the left side wall (in FIG. 9) of body member 12C, and is screwed into a threaded hole in flange 43A to secure flange 43A to the left side wall of body member 12C. It is attracted to join with. Groove 11 when the nozzle is assembled
If it is desired to isolate the exhaust chamber formed in 0A, the gap between flange 43A and body member 12C may be made very small. The insert member 22A is provided with a flange similar to the flange 43A at its upstream end, and the flange is connected to the flange 43A.
It can also be supported and fixed using support screws and fixing screws.

Yarn feed path 64A (Fig. 5), also 64B
(FIG. 6) is relatively easy to form accurately and uses a correspondingly modified body member 12A or 12 instead of a separate insert member as shown.
It can also be provided directly on B.

〔Effect of the invention〕

Since the nozzle for textured processing according to the present invention is constructed as described above, in particular, since the wall portion is provided with a plurality of slots that communicate between the textured processing chamber and the exhaust chamber, the fluid can flow out smoothly. We can produce high quality textured yarn.

[Brief explanation of the drawing]

1 is a front view of one part of a nozzle according to the invention; FIG. 2 is a sectional view along the line - of FIG. 1; and FIG. 3 is a nozzle assembly using the parts shown in FIG. FIG. 4 is a front view similar to FIG. 1 of another embodiment, FIG. 5 is a partial sectional view of an embodiment further modified from the embodiment shown in FIG. 4, and FIG. are a front view similar to FIG. 4 of yet another embodiment, and FIG. 7 is a front view similar to FIG.
6 is a partial cross-sectional view of the embodiment shown in FIG. 6 taken along line - in FIG. 6, showing a state immediately before both nozzle members are completely joined to each other, and FIG. FIG. 9 is a sectional view taken along the line - in FIG. 6 of an embodiment that is a modification of the embodiment in FIG. 6. 10, 10A, 12, 12A, 12B...main body member, 18, 20, 22, 22A, 62, 78,
80... insert member, 24, 30, 32, 3
4, 36; 64, 68, 70, 74; 64A, 8
6, 87, 96; 64B...means for merging the yarn to be processed and the processing fluid, 26, 26A...guide path, 28...textured processing chamber, 40...wall section, 41, 43...support section , 44...slot,
46...Exhaust chamber, 48...Exhaust port, 89...Closing member, 94...Passage, 100...Pipe, 104,1
06...Means for removably securing the tube to the passageway;
118...Adjustment means.

Claims (1)

[Scope of Claims] 1. A textured processing nozzle for texturing yarn while the yarn moves through a generally straight passage of a yarn processing nozzle, wherein the object to be textured is placed at a confluence position on the passage. means 24, 3 for merging the yarn and the treatment fluid;
0, 32, 34, 36; 64, 68, 70, 7
4; 64A, 86, 87, 96; 64B, 86
A, 87A, 140, and a textured processing chamber 28, which is located on a passage downstream of the joining position in the direction of yarn movement and has a wall portion provided with a hole for discharging the processing fluid in a transverse direction with respect to the passage. , a guide portion 26 constituting a portion of the passage between the confluence position and the textyard processing chamber;
26A; 26B, and a main body member 10, each of which is joined in a complementary relationship to each other to form an elongated through space including the passage.
12, and at least one insert member 22, 22A located in the through space when the main body members 10, 12 are joined and removably fixed to the main body members 10, 12, The insert members 22 and 22A cooperate to form a textured processing chamber between the two walls, and the textured processing chamber is surrounded by an exhaust chamber 46 formed by the space on the outside of both walls. each insert member has an elongated wall 40 along said passageway, said wall 40 joining at least one outwardly projecting support 41, 43; , 43 engage with the supporting surfaces of the corresponding main body members 10 and 12 in the space to support the wall portion with a space provided between the main body members and the longitudinal direction of the passage. A nozzle for textured processing, characterized in that a plurality of slots 44 are provided in the wall portion 40 and extend through the space and communicate between the textured processing chamber and the exhaust chamber 46. 2. The nozzle according to claim 1, wherein the insert members 22, 22A have outwardly projecting support portions 41, 43 formed at both ends of the wall portion, respectively. 3. A nozzle for textured processing according to claim 1 or 2, wherein the support portion of each insert member is in the shape of a flange. 4. The nozzle according to any one of claims 1 to 3 adjusts the position of at least one insert member with respect to the main body members 10, 12 supporting the insert member. A nozzle for textured processing including adjustment means 118 that can be adjusted. 5. In the nozzle as set forth in claim 4, the adjustment means includes the main body members 10, 12.
and the insert member 20,
A texturing nozzle including a screw 118 that engages 22A. 6. In the nozzle described in any one of claims 1 to 5, each slot 44
is a textured processing nozzle extending between one end of the insert members 22, 22A in the axial direction and the other end thereof. 7. In the nozzle described in any one of claims 1 to 6, the slot 4
Number 4 is 10 to 14 nozzles for textured processing, which are equiangularly distributed around the above passage. 8. In the nozzle described in any one of claims 1 to 7, the slot 4
4 is a nozzle for textured processing formed between a plurality of insert members 22, 22A when the nozzle is closed. 9 In the nozzle described in any one of claims 1 to 7, each main body member 1
0, 12 are a plurality of removably provided insert members 18, 20, 22; 62, 22; 78, 8
0,22, and the insert member is
The first insert members 18; 62; a first insert assembly that constitutes a yarn feeding section that is located at the merging position and opens at the merging position; A nozzle for texturing, which is part of the insert assembly. 10 In the nozzle described in claim 9, only one insert member 80 of the first insert members is provided with a processing fluid flow path pipe 100.
A textyard processing nozzle is provided in which the pipe 100 is inclined so that its downstream part approaches the yarn feeding part of the passage, and its downstream end protrudes into the merging position. 11. In the nozzle according to claim 10, the yarn feeding section of the passage has both first
Another insert member 78 among the insert members
The nozzle for texturing is composed of a groove 64A formed in the groove 64A, and the flat surface of one of the first insert members 80 faces the groove 64A.