US3894386A

US3894386A - Arrangement for feeding fibres into the twister of an open-end spinning frame

Info

Publication number: US3894386A
Application number: US477018A
Authority: US
Inventors: Alexandr Alexeevi Sharychenkov; Ljudmila Nikolaevna Gavrilova
Original assignee: Individual
Current assignee: Individual
Priority date: 1974-06-06
Filing date: 1974-06-06
Publication date: 1975-07-15
Anticipated expiration: 1992-07-15

Abstract

An arrangement for feeding fibres into the twister of an openend spinning frame comprises a feed roller, a drive combing roll and a clutch composed of two semiclutches, one fixed on the feed roller shaft and the second coupled with a drive to transmit rotation to the feed roller when in gear with the first semiclutch. The feed roller shaft is radially fixed in the cavity of the feed roller and spring-urged into axial abutment thereagainst, thereby providing for the displacement of the shaft in order that the semiclutches may be thrown into gear.

Description

United States Patent Sharyehenkov et a1.

[4 1 July 15,1975

1 1 ARRANGEMENT FOR FEEDING FIBRES INTO THE TWISTER OF AN OPEN-END SPINNlNG FRAME [76] Inventors: Alexandr Alexeevich Sharychenkov,

Ternovka, ulitsa Experimentalnaya, 1, kv. 67; Ljudmila Nikolaevna Gavrilova, Ternovka, ulitsa Experimentalnaya, 2, kv. 28, both of Penza, U.S.S.R.

[22] Filed: June 6, 1974 [21] Appl. N0.: 477,018

[52] US. Cl. 57/58.95; 19/105; 57/5891;

[51] Int. Cl. DOlh 1/12; DOlh 1/22 [58} Field of Search 57/50, 92, 58.89-58.95;

[56] References Cited UNITED STATES PATENTS 3,210,923 10/1965 Schlosser 57/58.95

3,434,184 3/1969 Doudlcbsky et a1. 19/83 3.771.632 11/1973 Kodousek et a1. 57/58.95 X 3,807.158 4/1974 Landuehrkamp et al 57/58.95 3,826,071 7/1974 Grau 57/58.95 X 3,828,539 8/1974 Croasdale et a1. 57/58.9l

Primary E.\'aminer.lohn Petrakes Attorney, Agent, or Firm-Holman & Stern [5 7] ABSTRACT An arrangement for feeding fibres into the twister of an open-end spinning frame comprises a feed roller, a drive combing roll and a clutch composed of two semiclutches, one fixed on the feed roller shaft and the second coupled with a drive to transmit rotation to the feed roller when in gear with the first semiclutch. The feed roller shaft is radially fixed in the cavity of the feed roller and spring-urged into axial abutment thereagainst, thereby providing for the displacement of the shaft in order that the semiclutches may be thrown into gear.

1 Claim, 2 Drawing Figures ARRANGEMENT FOR FEEDING FIBRES INTO THE TWISTER OF AN OPEN-END SPINNING FRAME The present invention relates to'open-end spinning frames, and, more particularly, to arrangements for feeding fibres into the twister of such frames.

Those skilled in the art known of the existence of arrangements for feeding fibres into the twister. Such a known arrangement comprises a housing which accommodates a feed roller and a drive combing roll disposed adjacent each other so that the fibrous material from the sliver is delivered by the feed roller to the combing roll. The latter separates the fibrous sliver into individual fibres which are transported via a channel into the twister. To transmit rotation to the feed roller, use is made of a clutch made up of two semiclutches, one coupled with the shaft whereon is mounted the feed roller, while the other linked with a drive, e.g., a constantly rotating shaft.

In the foregoing arrangement, both semiclutches are mounted on the feed roller shaft, the first semiclutch radially fixed to transmit rotation to the shaft and spring-urged into abutment thereagainst, whereas the second semiclutch freely disposed on the feed roller shaft. The latter semiclutch is formed as a gear cooperating with the common drive shaft of the frame. The semiclutches are thrown out of gear by means of an electromagnet, the first semiclutch serving as the armature thereof.

The foregoing design, however, is undesirably cumbersome, what with the semiclutches and the feed roller being arranged in a row on one and the same shaft. Such an arrangement takes much space and requires additional supports on the machine framing. Besides, access to the means for displacing the first semiclutch is limited, hampering maintenance.

It is an object of the present invention to provide an arrangement for feeding fibres into the twister of an openend spinning frame having an advantageous layout of the semiclutches and the feed roller shaft, thus rendering the arrangement compact, simple in design and easy to operate.

The above and other objects are attained by that in an arrangement for feeding fibres into the twister of an open-end spinning frame, comprising a shaft-mounted feed roller, a drive combing roll feeding fibres into the twister channel, and a clutch composed of two semiclutches, one fixed on the feed roller shaft, while the other coupled with the machine drive to transmit rotation to the feed roller when in gear with the first semiclutch, in accordance with the invention, the second semiclutch is loosely disposed on the feed roller having a cavity coaxial with the geometrical axis of the feed roller, and the shaft of the feed roller carrying the first semiclutch extends through said cavity of the feed roller, the shaft of the feed roller being radially fixed to transmit rotation to the feed roller and spring-urged into axial abutment thereagainst, thereby providing for the displacement of the shaft to throw the semiclutches into gear.

Such a design of the arrangement for feeding fibres into the twister of an open-end spinning frame permits stopping a feed roller as the latters shaft displaces in the axial direction, without stopping the feed rollers of the other spinning arrangements of the frame. Besides, with the second semiclutch disposed on the feed roller,

the diagram of gears of the arrangement can be substantially simplified, and hence its size decreased, so that the arrangement can be made compact.

The invention will be better understood from the following detailed description thereof taken in conjunction with the accompanying drawings, wherein:

FIG. 1 is a line diagram of an arrangement for feeding fibres, partial section; and

FIG. 2 is a view of FIG. 1 taken on the line IIII.

Referring now to the drawings, it will be seen to be illustrated therein an arrangement for feeding fibres, which comprises a housing 1 (FIG. 1) wherein there are formed two cavities 2 and 3 differing in diameter. The cavity 1 accommodates a feed roller 4, while the cavity 3 a drive combing roll 5. The combing roll 5 having a saw-toothed card clothing 6 fitted over the surface thereof is driven into rotation by a constantly r0- tating shaft (not shown) and partially extends into a channel 7 for transporting fibres to a twister 8 which is not described in detail as being widely known in the open-end spinning art.

The feed roller 4 is driven into rotation by a common drive shaft 10 (FIG. 1) via ajaw clutch 9 (FIG. 2). The jaw clutch 9 is composed of two semiclutches 11 and 12 (FIG. 2), the semiclutch 11 being mounted on a shaft 13 of the feed roller 4, whereas the semiclutch 12 being linked with the drive shaft 10 (FIG. 1) e.g., via a gear train, a flexible coupling, or any other known means capable of transmitting rotation to the semiclutch 12.

In the embodiment in question, the semiclutch 12 (FIG. 2) is formed as a gear with earns 14 on the face side thereof loosely fitted in an annular recess formed in the feed roller 4. With the semiclutch 12 so disposed, it is free to rotate with respect to the feed roller 4 but prevented from displacing along the geometrical 00 axis of the roller.

The gear semiclutch 12 engages agear 15 (FIG. 1) secured on the common drive shaft 10. i

The feed roller 4 (FIG. 2) is rotatably mounted in supports 16 of the machine framing, and a cavity 17 coaxial with the geometric 0-0 axis of the feed roller 4 is formed therein. The shaft 13 passes through the cavity 17 so that its ends extend beyond the roller 4. One end of the shaft 13 is chamfered and carries the semiclutch 11 secured thereon, the semiclutch 11 being C- shaped in cross-section, and the cams of the semiclutch 11 cooperating with the cams 14 of the semiclutch 12 to transmit rotation to the shaft 13.

The semiclutch 11 is anchored to the shaft 13 by a screw 18 threadedly received in a hole formed in the shaft 13.

The shaft 13 is prevented from moving radially in the cavity 17 of the feed roller 4 e.g., by a key 19 disposed in a longitudinal slot 20 of the roller 4, which arrangement provides for the transmission of rotation to the feed roller 4 and for the displacement of the shaft 13 in the axial sense. In order that the shaft 13 may displace in the axial sense, the shaft 13 is urged against the feed roller 4 by a spring 21 which rests with one end against the projections of the roller 4 (as shown in FIG. 2) and with the other end against an annular projection 22 on the shaft 13. The spring 21 drives the shaft 13 together with the semiclutch 11 in order that the cams of the semiclutch 11 may engage the cams 14 of the semiclutch 12 so as to transmit rotation to the feed roller 4. In order that the shaft 13 may displace in the opposite direction, i.e., to disengage the semiclutches l1 and 12, an end 13a of the shaft 13 which projects beyond the feed roller 4 must be actuated with a force directed along the o axis and exceeding the action of the spring 21, thereby displacing the shaft 13 through" the cavity of the roller 4, with the spring 21'being com-' pressed and the semiclutches 11 and 12 thrown 'outo'f gear. With the clutch thrown out, the semiclutch l2 continues rotating, whereas the feed roller 4 is stopped by the resistance of the fibrous material fed by the roller 4 from a channel 23 in the housing 1 to the combing roll 5.

To disengage the semiclutches l1 and 12, the shaft must be actuated by any means 24, e.g., an electromagnet, a pneumatic or hydraulic cylinder, a lever or a cam.

On the side of the semiclutch 11, the feed roller 4 is protected by a bowl-shaped cover 25, and on the opposite side protection is provided by a nut 26 threadedly received into a hole formed in the roller 4, which nut 26 has a channel 27 coaxial with the cavity 17 of the roller. The end 13a of the shaft 13 freely passes through the channel 27.

The proposed arrangement operates as follows.

When the means 24 for disengaging the semiclutches 11 and 12 is disconnected, the shaft 13 is urged by the spring 21 to displace in the cavity 17 of the feed roller 4 in the direction indicated by the arrow A, bringing the semiclutch 11 into engagement with the semiclutch 12. Since the semiclutch 12 is formed as a gear enmeshed with the gear of the drive shaft 10, the semiclutch 12 is in constant rotation, transmitting rotation, via the shaft l3.and the key 19, to the feed roller 4 which grips the fibrous material in the channel 23 and delivers it to the constantly rotating combing roll 5. The separated fibres from the roll 5 are transported along the channel 7 and into the twister 8.

If it is required to stop the delivery of fibres to the twister 8, the end 13a of the shaft 13 projecting out of the nut 27 is actuated to drive the shaft 13 through the cavity'17 of the roller 4 in the direction indicated by the arrow B, with the result that the semiclutch 11 is thrown out of gear with the semiclutch 12, the semiclutch l2 continuing to freely rotate on the roller 4, and the feed roller 4 being stopped by the resistance of the fibrous material.

In order to bring the feed roller 4 back into operation, it suffices to disconnect the means 24 from the shaft 13.

What is Claimed Is:

1. An arrangement for feeding fibres into the twister of an open-end spinning frame, comprising: a housing; a channel formed in said housing and serving for feeding fibrous material; a cavity formed in said housing and communicating with said channel; another cavity formed in said housing and communicating with said cavity; a feed roller disposed in said cavity and designed for feeding fibres from said channel into said other cavity; a combing roll mounted in said other cavity and designed for separating fibrous material into individual fibres; another channel formed in said housing, communicating with said other cavity and designed for feeding said fibres into the twister; a means for rotating said combing roll; a means for rotating said feed roller; a cavity formed in said feed roller coaxially with the geometrical axis thereof; a shaft extending through said cavity of the feed roller; a means for radial fixation of said shaft in said cavity; a clutch comprising two semiclutches, one semiclutch being secured on said shaft of the feed roller, while the other semiclutch is loosely fitted over said feed roller, coupled with said means for rotating the feed roller and designed for transmitting rotation to the feed roller while in gear with said first semiclutch; a means for spring-urging said shaft into axial abutment against said feed roller, thereby providing for the displacement of said shaft in order that the semiclutches of said clutch may be thrown into gear.