JPS5971440A - Method and apparatus for texture processing of yarn - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in yarn processing equipment. Especially in 1981
Co-pending U.S. Patent Application No. 256 filed on May 22nd
No. 406 and the corresponding Yorosono! published on March 10, 1982 as publication number 0039763!
It relates to an improvement of the device claimed in patent application EP 81101805.

This co-pending application (hereinafter referred to as the "prior application") is fully disclosed herein by reference.

The earlier application describes the possibility of adjusting the operating characteristics of the yarn processing device, for example by varying the yarn material, yarn thickness and processing speed, etc., in order to adapt to the varying requirements of the application.

The prior application also discloses a system for coupling yarn and processing fluid together along a yarn path through the yarn processing chamber, such that a portion of the fluid can exit the yarn processing chamber across the yarn path. I have written and complained about this. This earlier application is only one example of a patent document describing this type of system; other examples are also mentioned in this earlier application itself.

The general suitability of such a system is improved by providing means for selectively adjusting the proportion of processing fluid exiting the chamber laterally relative to the fluid exiting the chamber along the thread path. It has been found that significant improvements can be obtained. Such selective adjustment can be effected, for example, by selective control of the back pressure on the fluid attempting to exit the yarn forming form across the yarn path. This latter control may be achieved, for example, by selectively controlling the stationary cross-sectional area of the flow of processing fluid exiting the yarn processing window by means of which the fluid outlet can be adjustable and throttled. Adjustable throttling can be achieved economically by providing the outlet with means for receiving a selected one of a number of throttles having different effective flow cross sections.

An embodiment of the yarn texturing nozzle according to the present invention will be described below with reference to the accompanying drawings.

Two parts of the nozzle are designated 10 and 12, respectively. Part 10 is mounted on carrier 14 by a headed pin 16 that fits into a keyhole-shaped slot 18. A positioning pin 20ii on the carrier engages a slot 22 in the nozzle part. A detailed description of the auxiliary positioning member 23 will be omitted. The nozzle parts 12 are parts 16A and 20A corresponding to the aforementioned pins 16 and 20, respectively.
It is likewise mounted on the carrier 24 by.

Part 10 is made in one piece and consists of an elongated block having a flat surface 26 . Part 12 is comprised of similar (but not identical) blocks and has a flat surface 28 that engages said flat surface 26 in the plane 1--2 of FIG. When flat surfaces 26 and 28 come into contact, a seal is formed in the process fluid passageway therebetween.

Each block has two longitudinally extending slots 30 on either side of an "island" 32 integral therewith.

Part 10 has a groove 34 in face 26 that begins at one end of the block and extends short of the other end. The part 12 has a groove 36''5 in the face 28 starting from one end of the block and extending to the other end, the groove 36 being interrupted by a circular cross-section hole 38 for receiving an insert 40 (as described in more detail below). There is.

When part 10.12 is in its operating position as shown in FIG. is changing. The core passage forms a thread passage through the nozzle, with its upper end meeting the inlet (upstream) end as seen in FIGS. The details of this passage were described in the earlier application and will not be reproduced here as they are not critical to the present invention. Briefly, this passage is a yarn treatment chamber 4 formed by a passage in and adjacent to the island 32, a junction 42 where the yarn and treatment fluid meet.
4 and a guide passage 46 between the confluence and the yarn processing chamber. The alignment of the blocks to form this passageway is ensured by corresponding pins 48 on component 12 that engage locating holes 50 in component 10.

Processing fluid is supplied from a supply duct 50 in the carrier 14 towards the junction 42, through a hole 52 in the part 10 to a chamber 54 in the part 10, and then by a metering tube 56 to the junction. The internal configuration of the metering cheep 56 and its function have been described in detail in earlier applications and will not be repeated here. The N1 metering tube is mounted in a receiving hole leading from the chamber 54 to the confluence point by a screw 58 that threads into a corresponding hole in the wall of the chamber, with a spring 6o extending between the screw and the metering tube. There is. Chamber 54 opens at the end of the block and is normally closed by a closure screw 62, but this closure can be removed when screw 58 needs to be loosened to replace tube 56. This method of mounting the tube 56 is merely exemplary.

Although the means of attachment shown in the prior application is the preferred one, other means may be used if desired.

The yarn reaches the confluence point by a passageway (part of the groove 36) upstream of the confluence point. As clearly shown in FIG. 2, passageways immediately adjacent and upstream of the junction are provided by grooves 36A in insert 40.

The groove 36A is narrowed so as to obstruct the flow of processing fluid to the upstream side. Insert 40 is positioned within component 12 by pin 64 and secured by screw 66.

Treatment fluid can exit the yarn treatment chamber across the yarn path by holes 68 extending through the island 32 between the yarn treatment chamber and the groove 30. Instead of the holes shown, slots extending in the longitudinal direction of the thread path may be provided. The length of the yarn processing chamber in which the holes 68 (or slots) are to be provided is chosen to suit the required working conditions, but usually will not be above half the length of the island.

The processing fluid leaving the chamber 44 through the hole 68 then flows into the groove 3.
0 into the exhaust duct 70 in the carrier 14 by means of respective outlet ports 72 . Figure 1.

As shown in each of FIGS. 3A and 3B, each port 72 extends from the opposite side of its respective block (i.e., the side opposite sealing surface 26) to intersect groove 30 and receive process fluid therefrom.

Each port 72 is generally circular in cross section and has an enlarged lower portion 4 for receiving the locating flange and sealing tongue of the throttle 76 such that the cylindrical body of the throttle 760 is received within the port 72. Each throttle body is screwed into engagement with a threaded groove in each part.

Each throttle 76 has a throughbore with a central portion 78 having a predetermined effective cross-sectional area for the flow path formed by the date.

Preferably, the effective cross-sectional areas of the passages passing through the two throttles are the same. However, the effective cross-sectional area of either port can be reduced by removing the installed throttle and possibly replacing it with a throttle of the same outline but a different bore size, or by simply omitting the throttle and directing the process fluid over the entire cross-section of the port. You can change it by allowing it to pass.

It is clear that replacing the throttle, as mentioned above, requires an interruption of yarn processing and removal of parts 10 and/or 12 from the carrier. This can be avoided by incorporating a throttle at each port that is adjustable from outside the nozzle, but such devices are expensive (
~Also, it often lacks reliability.

By controlling the effective flow path through each port 72,
Each throttle effectively controls the backpressure within the groove 30 so that both throttles control the processing fluid exiting the yarn processing chamber 44 via the hole 68 for the fluid exiting through the downstream end of the yarn path. control the proportion of

Throttle usage conditions vary widely depending on work requirements and must therefore be determined empirically. It is usually preferred to be used without a throttle. However, if the user of a particular nozzle uses this nozzle (without a throttle) to process progressively thicker threads, the upper limit of the thread thickness will be reached, beyond which reliable processing will not be obtained. will actually be understood. At this stage, a throttle can be inserted to reduce the proportion of treatment fluid that is evacuated across the yarn treatment chamber, allowing even thicker yarns to be processed using the same nozzle.

Therefore, generally speaking, the thicker the yarn, the smaller the effective cross-sectional area it should encompass for the flow of treatment fluid across the yarn treatment chamber. However, the upper limit of the yarn thickness (requiring throttle insertion) itself depends on the relationship between the yarn thickness and the dimensions (cross-sectional area at 41!) of the yarn passage through the yarn processing chamber, and depends also on the shape, number and size of the holes and other perforations leading from the yarn processing chamber to the groove. Furthermore, the upper limit of the thickness is the thread tie f! The price varies depending on the material of the thread.

Although no general rule can be stated in view of the many influential variables some of which have been outlined above, it has been found that a throttle having an effective bore cross-sectional area of 5 to 4 oIlIl+2 is effective. Proven. Although one port and one throttle may be provided with appropriate dimensions, drainage from both sides of the nozzle is preferred. If no throttling effect is observed, the effective cross-sectional area of the flow through the port is greatly reduced and the flow through the holes 68, which alone determines the proportion of processing fluid that exits across the yarn processing chamber, is reduced. It is well known that he has had such a profound influence on me.

The invention is not limited to the details of the illustrated embodiment. In principle, control of the back pressure in the groove could also be achieved by means other than throttling the exhaust port. However, the throttle can be relatively easily manufactured and accurately adjusted. The block structure and the shape of the thread passages are irrelevant to this broad inventive idea. The upstream parts of the yarn treatment chamber merely form means for supplying the yarn and treatment fluid together into the yarn treatment chamber; other forms of this means are known from the prior art. .

Other forms of yarn treatment chambers are also known which allow treatment fluid to be evacuated laterally. The island 32 and its holes 68 provide a perforated wall for the yarn processing chamber and can be replaced with other perforation shapes. The groove 30, which forms a receiving area for the treatment fluid adjacent to the thread passageway, can also have other shapes.

In the system described in the earlier application, the rate of fluid leaving a given nozzle across the yarn path is adjusted by replacing the insert providing the yarn treatment chamber, i.e. by replacing the perforations in the yarn treatment chamber. The results obtained should also be noted. However, no means were disclosed for regulating the rate of fluid leaving a given yarn processing chamber laterally. In other words, there was nothing to add to the yarn processing room other than the yarn processing room itself.

In the present invention, the means forming the yarn processing chamber are integrated with other parts of the system, virtually no replacement of the chamber itself (unless the entire nozzle is replaced), and further features of the variable flow channel are particularly Beneficial.

However, this variable flow channel feature can also be used with yarn processing chambers made with one or more replaceable inserts.

The treatment fluid on the ramp is preferably hot air, although other fluids are known, such as steam.

[Brief explanation of the drawing]

Figure 1 shows a thread texturing nozzle consisting of two parts and its installation, taken in cross-section along the center plane of the part. Figure 2 shows two nozzles that engage with each other in the -■ plane of Figure 1. The surface of the component and FIG. 3 are cross-sectional views taken along the -■ plane of FIG. 1. 10.12... Nozzle parts, 32... Island, 44...
・Yarn processing room. Patent Applicant Maschinenfu Aprik Leak ~ Akchendazelschaft Patent Application Agent Patent Attorney Akira Aoki Patent Attorney Kazuyuki Nishidate Patent Attorney Akira Yamaguchi Masaya Nishiyama

Claims (1)

[Claims] 1. A yarn treatment chamber for texturing, supplying yarn and a treatment fluid together along a path passing through the yarn treatment chamber, with a portion of the fluid passing across the yarn path and treating the yarn. Yarn treatment apparatus comprising means for allowing exit from the treatment chamber and means for selectively adjusting the ratio of treatment fluid exiting across the yarn treatment chamber to treatment fluid exiting along the yarn path. 2. A yarn treatment chamber for texturing, supplying yarn and treatment fluid together along a path passing through the yarn treatment chamber, and a portion of the fluid traversing the yarn path and leaving the yarn treatment chamber; and means for controlling back pressure to encourage fluid to exit across the yarn path. 3. Yarn treatment chamber for texturing, yarn and treatment fluid are supplied together along a passage passing through the yarn treatment chamber, and part of the fluid crosses the yarn passage from the yarn treatment chamber to the yarn passage. A yarn processing device comprising: means for allowing fluid to exit an area adjacent to the area; a channel for discharging fluid from the area; and means for selectively adjusting the effective cross-sectional area of the channel. 4. A yarn treatment chamber for texturing, supplying yarn and treatment fluid together along a passage passing through the yarn treatment chamber, with a portion of the fluid crossing the yarn passage and adjoining the yarn passage from the yarn treatment chamber; a channel for discharging fluid from said region and a reservoir for receiving an arbitrarily selected one of a plurality of throttles having different effective cross-sections; A yarn processing device comprising means provided. 5. Passing the yarn and treatment fluid through the yarn treatment chamber, allowing a portion of the fluid to exit the yarn treatment chamber across the yarn path, and leaving the yarn treatment chamber along the yarn path; A thread texturing method that selectively adjusts the proportion of fluid that is allowed to evacuate laterally to the fluid. Margin below