US3827229A

US3827229A - Device for selectively changing the sense of rotation of the twist tubes of a false-twist machine

Info

Publication number: US3827229A
Application number: US00408115A
Authority: US
Inventors: J Bienjok
Original assignee: Heberlein and Co AG
Current assignee: Heberlein and Co AG
Priority date: 1972-11-01
Filing date: 1973-10-19
Publication date: 1974-08-06
Anticipated expiration: 1991-08-06
Also published as: CH551507A; FR2204721A1; DD108331A5; IT996353B; BR7308484D0; GB1448027A; FR2204721B1; DE2353483A1; JPS4975857A

Abstract

A mounting plate carrying rollers and drive means for driving a twist tube and a magnet for pressing the tube against the rims of the rollers, may be positioned in either of two positions 180* opposite from one another in order to reverse the sense of rotation of the tube by means on the mounting plate and on a machine frame which means cooperate with each other to permit such opposite mounting.

Description

United States Patent 1191 Bieniok Aug. 6, 1974 DEVICE FOR SELECTIVELY CHANGING 2,883,824 4/1959 Andrews et al 57/7745 THE SENSE 0 ROTATION O THE TWIST 3,488,676 1/1970 Bieniok 57/77.45 3,63l,665 l/l972 Scriven et a]. 57/77.45 TUBES OF A FALSE-TWIST MACHINE 3,686,846 8/l972 Smith 57/34 HS [75] Inventor: Joachim Bieniok, Wattwil, 3,718,050 2/l973 Verhellen. 57/77.45 X Switzerland 3,788,056 1/1974 Burri 57 7745 [73] Assignee: Heberlein & C0. AG, St. Gallen,

s it fl d Primary Examzner-John Petrakes Atto ne ,A nt, 0r Fir --Fitz a'trick, Cella, Har er 122 Filed: Oct. 19, 1973 & 86 m p p [21] App]. No.: 408,115

[57] ABSTRACT [30] Foreign Application Priority Data Nov 1 1972 Sweden 1 5901/72 A mounting plate carrying rollers and drive means for driving a twist tube and a magnet for pressing the tube [52] C1 57/77 45 57/104 against the rims of the rollers, may be positioned in [51 Int Cl. u: 62 1/06 either of two positions 180 opposite from one another 58] Field 45 in order to reverse the sense of rotation of the tube by means on the mounting plate and. on a machine frame which means cooperate with each other to permit [56] References Cited such opposite mounting.

UNITED STATES PATENTS 4 Claims, 4 Drawing Figures 2,837,889 6/1958 Comer 57/104 PATENTED AUG sum DEVICE FOR SELECTIVELY CHANGING THE SENSE OF ROTATION OF THE TWIST TUBES OF A FALSE-TWIST MACHINE The present invention relates to apparatus for texturing textile yarns, and more particularly to a device for selectively changing the sense of rotation of the twist tube of a false-twist texturing machine.

False-twisting machines for texturing synthetic yarns are known in which the twist tubes of a plurality of processing stations are directly or indirectly rotated by common drive means, such as a drive belt. Such machines may also be equipped with means for reversing the direction of movement of the drive means so as to change the sense of rotation of the twist tubes.

A known machine of this type has for each processing station a bearing plate which can be swivelled about its center of gravity and carrying on it false-twist devices arranged in pairs, each of the false-twist devices comprising a drive and a support roller and a permanent magnet keeping the twist tubes in the cuneal throat between the rollers. The actuation of a lever provided at the end of the support plate effects application to or removal from the forward or rearward faces of the drive belt so that opposite rotation of the twist tubes of the two false-twist devices is effected.

By means of this device, it is possible to have one half of the twist tubes of a machine rotating in one direction and the other half in the other direction. A selective change of the sense of rotation of the twist tubes is, however, not possible.

The industry producing textured yarns presently requires false-twist texturing machines in which the direction of rotation of the twist tubes of the various processing stations can be changed selectively and independently from each other, but this requirement implies various problems. At first view, an essential requirement of the false-twist devices used in the known texturing machines, consists in that the drive roller should rotate in the direction of rotation in which its periphery moves into the cuneal throat between it and the support rollersince otherwise excessive slippage between the twist tube and the drive roller take s place. Furthermore since, in the interest of high capacity, it is important to lodge the highest possible number of processing stations in a machine of given dimension, it is also important to effect the change of the direction of rotation of the twist tubes so that the lateral space consumption towards the adjoining processing stations is as small as possible. Finally, it is essential as well that the position of the twist tubes changes as little as possible during the change of direction of rotation because such changes of position produce the effect of deviating the yarn in the texturing zone which may easily cause irregularities in yarn quality.

I contribute, by the present invention, a device for selectively changing the direction of rotation of the twist tube of a false-twist texturing machine which overcomes the aforementioned difficulties and in which the above-noted requirements are fulfilled to a great extent.

According to one aspect of my invention, the device comprises two axially parallel rollers rotatable about their axes and mounted on a mounting plate in one cuneal throat of which a twist tube may be supported in tangential contact with the circumferential surfaces or rims of the rollers, a magnet, such as a permanent magnet, pressing the twist tube against the rollers, and drive rolls arranged on extended roller shafts to be driven by means of a driving belt. On each end of the mounting plate, and symmetrically with respect to a plane extending through both cuneal throats of the rollers, I provide means forming a pair of parallel bores extending perpendicular with respect to the plate surfaces and positioned outside the contours of the rollers. Furthermore, I arrange a support on the: machine frame and this support is shiftable in horizontal direction transversely with respect to the wide or driving surfaces of the drive belt, the support having a pair of parallel vertical pins arranged on its upper face, onto which pins the mounting plate may be positioned by fitting either pair of bores on the pins. It will be seen that, since either pair of bores may be fitted on. the pins, the mounting plate, and the rollers and magnet mounted on it, can be positioned in either of two positions 180 opposite from one another. In this way, the drive belt can be made to contact one or the other drive roll to drive the twist tube in the rotational sense desired. Preferably, on the mounting plate, the pairs of bores and the rollers may be arranged so that regardless of which of the two pairs of bores is fitted onto the pair of pins of the support, the position of the twist tube in space is the same. Additionally, the magnet may be shaped so that it does not protrude from the contours of the rollers.

There has thus been outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of the invention. It is important, therefore, that the claims be regarded as including such equivalent construction as do not depart from the spirit and scope of the invention.

Specific embodiments of the invention have been chosen for purposes of illustration and description, and are shown in the accompanying drawings forming a part of the specificication wherein:

FIG. 1 is a front elevational view of apparatus according to the present invention; and

FIGS. 2 to 4 are top views of two adjoining devices shown in various arrangements.

A plurality of devices according to the present invention may be arranged on a texturing machine consistent with the number of yarn treatment stations, and may be situated beside each other on both sides of a frame, for example devices numbering 160 may be so mounted, i.e., on each side of the frame.

Each of FIGS. l and 2 shows two devices A and B according to the present invention, having a support 1 which is fixed on two rods 2, 2' shiftable in horizontal direction on the machine frame 3. Each support 1 comprises two parallel, vertically extending pins 4, 4' onto which corresponding parallel pairs of

bores

6, 6; 7, 7' formed in the mounting plate 5 and extending perpendicular with respect to the plate surface can be fitted,

as desired. Each mounting plate 5 is also provided with two perforations through which the

vertical shafts

8, 9 are passed.

Rollers

10, 11 are fixed on the

shafts

8, 9

respectively, each roller consisting of two discs 10", and 11, 11", which are kept at a distance from each other by means of spacers. In one of the cuneal throats formed by the

discs

10, 10" and 11, 11", the twist tube 12 is supported in parallel position with respect to the roller axis, the twist tube being pressed against the disc rims by means of a permanent horseshoe magnet arranged on a support 13. The magnet 14 is preferably shaped so that it does not protrude beyond thecircumference of the

rollers

10, 11. Below the plate 5,

rolls

15, 16 are provided on the

shafts

8, 9, against which rolls 15, 16, a drive belt 17 may be applied as desired.

As can be seen from FIG. 2, in device A, the

bores

6, 6 of the mounting plate 5 are fitted onto the

pins

4, 4 of support 1, and the latter is positioned so that the drive belt 17, moving in direction of the arrow, drives the roll in counterclockwise direction, the discs 10. 10" moving into the cuneal throat in which the twist tube 12 is placed, so that the twist tube rotates in clockwise direction.

On the other hand, in device B, the position of the mounting plate is turned with respect to the position of device A by 180 about the central axis of twist tube 12 as the axis of rotation, i.e. the pair of

bores

7, 7 is fitted onto the

pins

4, 4 of support 1. Carrier 1 is in such a position that the drive belt 17 drives the roll 16 in clockwise direction, the discs 11, 11' moving into the .cuneal throat so that the twist tube 12 rotates in counterclockwise direction.

The two twist tubes of devices A and B are associated with two adjoining yarn treatment stations simultaneously to impart to the corresponding yarns a falsetwist in S and Z direction, respectively.

It may, however, also be desirable that, in two adjoining yarn treatment stations, an S false-twist be imparted to the yarns, in the two following yarn treatment stations a Z false-twist, etc. In this case, two adjoining devices according to FIG. 3, and thereupon two adjoining devices according to FIG. 4 may be provided.

However, the device of the present invention makes it possible to have any other sequence of S and 2 falsetwist, according to choice, over the whole length of the machine.

By modification of the described example, it is also possible to arrange the pins on support 1 so that a bore of a pair of

bores

6, 6; 7, 7 may be fitted onto the same. The pins may, for example, be arranged so that the bores 6 and 7' or respectively 6 and 7, may be titted onto thesame or so that the

bores

6 and 7, or respectively 6' and 7 may be fitted onto the pins.

A further advantage of the device of the present invention consists in that the mounting plate may always be fitted onto the pins of the support in such a manner that the roller acting as driving roller moves into the cuneal throat in which the twist tube is placed, the slippage being thus minimized. Furthermore, lateral space consumption of the device towards the adjoining yarn treatment stations is extremely low since the permanent magnet does not protrude from the contours of the rollers. Furthermore, upon a change of the direction of rotation of the twist tube, the position of the same is not altered since the mounting plate is then turned by 180, the central axis of the twist tube being the axis of rotation.

Additionally, the device of the present invention makes it possible to have the twist tubes, viewed from the operating side of the machine, always before the drive belt, whereby introduction of the yarns in the respective treating stations is facilitated and the risk of accidents reduced.

Finally, the device of the present invention makes it possible in a simple way to reverse the direction of rotation of all the twist tubes of a machine by reversal of the direction of movement of the driving belt, fitting of all the mounting plates into their opposite position being necessary only to assure that all the drive rollers move into the cuneal throat in which the twist tubes are provided.

I believe that the construction and operation of my novel apparatus will now be understood and that the advantages thereof will be fully appreciated by those persons skilled in the art.

I claim:

1. Device for selectively changing the direction of rotation of a twist tube in false-twist texturing machines, comprising mounting plate means (5), two axially parallel rollers (10,11) mounted on said mounting plate means for rotation about their axes, said rollers being arranged to form cuneal throats in one of which a twist tube is adapted to be supported in tangential contact with the rims of said rollers, a magnet (14) for pressing the twisttube towards the rollers (10,11), driving rolls (15,16) arranged on elongated roller shafts to be driven by means of a belt (17), support means (1) constructed and arranged to be shiftable horizontally relatively to a machine frame and transversely to the wide drive surface of the drive belt, pins projecting from one of said means and bores formed in the other of said means, said pins being adapted to fit into said bores and said pins and bores being located to permit said mounting plate means to be positioned in either of two positions relatively to said support means whereby the drive belt will drive a selected one of said driving rolls to rotate the twist tube in the desired rotational sense.

2. Device according to claim 1, characterized in that the permanent magnet (14) is shaped so that it does not protrude beyond the contours of rollers (10,11).

3. Device for selectively changing the direction of rotation of a twist tube in false-twist texturing machines, comprising two axially parallel rollers (10,11) rotatable about their axes and arranged on a mounting plate (5) in one cuneal throat of which a twist tube (12) is adapted to be supported in tangential contact with the rims of the rollers, a magnet (14) for pressing the twist tube towards the rollers 10,11) and driving rolls 15,16) arranged on elongated roller shafts to be driven by means of a belt (17), means forming pairs of parallel bores (6,6; 7,7) in the mounting plate (5), said pairs of bores being disposed symmetrically with respect to a plane extending through both cuneal throats of the rollers, and perpendicular to said mounting plate and outside the contours of the rollers (10,11), a support (1) adapted to be arranged on a machine frame (3) said support being shiftable in horizontal direction transversely with respect to the wide drive surfaces of the drive belt, and a pair of parallel vertical pins (4,4') mounted on the upper face of said support onto which pins the mounting plate (5) may be positioned by fitting either pair of bores on said pins.

4. Device according to claim 3, characterized in that the pairs of bores (6,6'; 7,7) and the rollers (10,11) are arranged on the mounting plate (5) so that upon fitting of one pair of bores onto the pair of pins (4,4') of support (1 the position of a twist tube (12) in a cuneal throat between said rollers is always the same in space.

UNHE STATES PATENT ()FENJE mrme or Home Patent No. v 229 Dated August 6 v 1974 lnventofls) JOACHIM BIENIOK It is cerfified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

First page," at [30] change "Nov. 1, 1972 Sweden" to Nov; .1 1972 Switzerland I Signed and sealed this 29th day of October 1974.

(SEAL) Atteets MCCOY Mu, GIBSON JR, 0. MARSHALL DANN Arresting Officer Commissioner of Patents USCOMM-DC 60376-P69 w u.s. GOVERNMENT PRINTING OFFICE Isl 0-365-334.

FORM PO-105O (10-69)

Claims

1. Device for selectively changing the direction of rotation of a twist tube in false-twist texturing machines, comprising mounting plate means (5), two axially parallel rollers (10,11) mounted on said mounting plate means for rotation about their axes, said rollers being arranged to form cuneal throats in one of which a twist tube is adapted to be supported in tangential contact with the rims of said rollers, a magnet (14) for pressing the twist tube towards the rollers (10,11), driving rolls (15,16) arranged on elongated roller shafts to be driven by means of a belt (17), support means (1) constructed and arranged to be shiftable horizontally relatively to a machine frame and transversely to the wide drive surface of the drive belt, pins projecting from one of said means and bores formed in the other of said means, said pins being adapted to fit into said bores and said pins and bores being located to permit said mounting plate means to be positioned in either of two positions relatively to said support means whereby the drive belt will drive a selected one of said driving rolls to rotate the twist tube in the desired rotational sense.

3. Device for selectively changing the direction of rotation of a twist tube in false-twist texturing machines, comprising two axially parallel rollers (10,11) rotatable about their axes and arranged on a mounting plate (5) in one cuneal throat of which a twist tube (12) is adapted to be supported in tangential contact with the rims of the rollers, a magnet (14) for pressing the twist tube towards the rollers (10,11) and driving rolls (15,16) arranged on elongated roller shafts to be driven by means of a belt (17), means forming pairs of parallel bores (6,6''; 7,7'') in the mounting plate (5), said pairs of bores being disposed symmetrically with respect to a plane extending through both cuneal throats of the rollers, and perpendicular to said mounting plate and outside the contours of the rollers (10,11), a support (1) adapted to be arranged on a machine frame (3) said support being shiftable in horizontal direction transversely with respect to the wide drive surfaces of the drive belt, and a pair of parallel vertical pins (4,4'') mounted on the upper face of said support onto which pins the mounting plate (5) may be positioned by fitting either pair of bores on said pins.

4. Device according to claim 3, characterized in that the pairs of bores (6,6''; 7,7'') and the rollers (10,11) are arranged on the mounting plate (5) so that upon fitting of one pair of bores onto the pair of pins (4,4'') of support (1), the position of a twist tube (12) in a cuneal throat between said rollers is always the same in space.