US2896395A

US2896395A - Spindle drive for a spinning and twisting machine

Info

Publication number: US2896395A
Application number: US541446A
Authority: US
Inventors: Fink Heinrich
Original assignee: SKF Kugellagerfabriken GmbH
Current assignee: SKF GmbH
Priority date: 1954-10-23
Filing date: 1955-10-19
Publication date: 1959-07-28
Anticipated expiration: 1976-07-28
Also published as: FR1133193A; DE957915C; GB783935A; CH336300A

Description

July 28, 1959 F|NK I 2,896,395

SPINDLE DRIVE FOR A SPINNING AND TWISTING MACHINE Filed Oct. 19, 1955 3 Sheets-Sheet 1 &

July 28, 1959 H, PM 2,896,395

SPINDLE DRIVE FOR A SPINNING AND TWISTING MACHINE Filed Oct. 19, 1955 flflfl 3 Sheets-Sheet 2 unumy A Z 2? a a inward-0r:

H. FINK July 28, 1959 SPINDLE DRIVE FOR A SPINNING AND TWISTING MACHiNEZ I Filed Oct. 19, 1955 3 Sheets-Sheet 5 mun!!! INVENTOR M/ze @214 E1 5 Sin-2L- SPINDLE DRIVE FORA SPINNING AND TWISTING MACHINE Heinrich Fink, Esslingen-Hegensherg, Germany, assignor to SKF Kugellagerfabriken G.m.b.H., Schweinfurt, Germany Application October 19, 1955, Serial No. 541,446 Claims priority, application Germany October 23, 1954 7 Claims. (Cl. 57-402 The present "invention relates to a drive for driving a spindle of a spinning and twisting machine used in the textile industry.

Conventional drives of this type have several drawbacks. There is only a very small space in which such a drive can be located, and since it is desirable to provide an individual drive for each spindle, the space requirement presents a very great problem. Where the spindles are frictionally driven it has not been possible up to the present time to provide a suflicient pressure between the frictional drive members, and where the drive to the spindles is through gears or through a worm and worm Wheel transmission it is necessary to provide clutches in order to be able to disengage the drive when the spindle must be stopped in order to piece together a broken strand. The necessityof such clutches also renders this form of drive impractical for the small space in which such drives can be located.

One of the objects of the present invention is to overcome the above drawbacks by providing a drive for a spindle of the above type in such a way that this drive may be located in a very small space and at the same time will reliablyprovide a drive of suflicient force which will not slip.

Another object of the presentinvention is to provide a fricional drive to a spindle of the above type of sufiicient force to reliably drive the spindle irrespective of the direction in which the latter is rotated.

A further object of the present invention is to provide a drive of the above type which maybe adjusted so as to change the direction of rotationof the spindle.

An additional object of the present invention is to provide a drive of the above type which is composed of transmission members which frictionally engage each other and which at the same time reliably transmits the necessary driving force.

Also it is an object of the present invention to provide a high transmission ratio in a drive in an extremely small space.

Still another object of the present invention is to provide a drive of the above type which combines a friction drive with a gear drive.

The objects of the present invention also include the provision of a structure capable of accomplishing all of the above objects and at the same time composed of simple and ruggedly constructed elements which are very reliable in operation.

With the above objects in view the present invention mainly consists of a drive for a spindle of a spinning and twisting machine, this drive including a driven member and a driving member respectively having axes of rotation which extend in different directions, the driving member having an annular driving surface which is located in a plane normal to the axis of rotation of the drive means and the driven means having an annular driven surface which is coaxial with the axis of rotation of the driven means. The drive means and the driven means are supported for rotation about their axes by a 2,896,395 Patented July 28,- 1959 support means, andan annular transmission means whose axis of rotation is substantially perpendicular to that of the drive means is locatedbetwee'n andengages the annular driving surface and the annular driven surface for transmitting a drive from the drivemeans to the driven means. A carrier means is carried bythe support means and carries the transmission means forfree' rotation about its axis of rotation, and a spindle means is fixed coaxially to the driven means 'to'bedriven thereby.

The novel features which are considered as characteristic for the invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method 'of operation, together with additional objects and advantages thereof, will be best understood from the followingdescription of specific embodiments when read in connection with the accompanying drawings, in which:

Fig. 1 is a fragmentary partly sectional elevational view of an apparatusconstructed'in accordance with thepresent invention, Fig. 1 being partly sectioned along line 1-1 in the direction of the arrows of 'Fig. 2;

Fig. 2 is a top plan viewofthe structure of Fig. 1 with the cover plate of Fig. 1 removed to clearly illustrate the structure therebeneath;

Fig. 3 is a fragmentary partly sectional elevational view of a different embodimentof a structure according to the present invention, Fig. 3 being partly sectioned along line 3--3 of Fig. 4 in the direction of the arrows;

Fig. 4 is a fragmentary top .plan view of the structure of Fig. 3 with the cover plate removed from the latter to clearly show the elements therebeneath; i

Fig. 5 is a fragmentaryelevational view of the structure of Fig. 4 as seen .inthe direction of arrow A of Fig. 4;

Fig. 6 is a fragmentary elevational view similar to Fig. 5 and showing a modification of the structure shown in Fig. 5; and Fig. 7 is a fragmentary elevational View showing a further modification.

Referring now to the drawings and to Figs. 1 and 2 in particular, it will be seen that a casing 10 is provided with an integral carrying flange 101. T his. carrying flange carries a spindle housing 11 which extends through an apperture in the flange 101 and which has a flange 110 engaging the top face of the flange 101 and a nut 12 threadedly engaging the housing '11 and the underside of the flange 101 to fix the housing 11 to the flange 101. The spindle housing 11 carries in a k-now way a spindle hearing which turnably supports the spindle whose top end 13 is shown in Fig. 1, this top end 13 being adapted to carry a spool. A driven means provided with an outer annular surface 14 is fixed directly to the spindle for driving the latter, this driven means being in the form, for example, of a pulley which is fixed to the spindle for rotation therewith. The top portion of the pulley is provided with an outwardly extending annular flange 141 which covers an opening 151 in the cover 15. In order to prevent the spindle from being pulledywhen the spool is dotfed, a book 16 extends over the flange 141. How ever, in order to be able to pull out the spindle when desired, the hook 16 is movable upwardly, and in the example shown the hook 16 is formed with a bore through which extends a screw fixed to the cover 15, and a resilient rubber sleeve 17 or the like is located between the head of the screw 18 and the hook 16 to urge the latter downwardly to the position shown in Fig. 1.

A drive means is provided for driving the spindle, and in the illustrated example this drive means is in the form of a drive shaft 19 turnably supported for rotation about its axis by suitable bearings of the support means 10. As is illustrated in the drawings, collars are fixed to the shaft 19 to prevent axially shifting thereof while allowing the shaft 19 to rotate freely about its own axis. The drive means includes in addition to the shaft 19 a disc 20 I lars.

v.3 which is fixed to the shaft 19 for rotation therewith, and this disc 2% is provided at its left face, as viewed in Figs. 1 and 2, with an annular driving surface which is located in a plane normal to the axis of rotation of the drive means. It will be noted that the driven means is proof an annular member 21 which has an axis of rotation substantially perpendicular to that of the drive means 19,

20. This annular member 21 is provided with an outer coating 22 which has a high coefficient of friction, this outer coating 22 engaging the annular driving surface of the disc 20 and the annular driven surface 14. A car rier means is provided to carry the transmission means 21, 22 for free turning movement about its axis of rotation, and this, carrier means takes the form of a spring leaf 23 which is fixed to the support means by an angle member 24 and which is fixed to another angle member 25 which carries the pin which extends through the central bore of the annular member 21 to support the latter for rotation about its axis. It will be noted that the leaf spring 23 extends angularly up from the bottom wall of the casing 10 between the drive means and driven means, and furthermore the leaf spring 23 by its own resiliency urges the transmission means 21, 22 into engagement both with the drive means and the driven means.

As is apparent from Fig. 2, the diameter of the transmission means 21, 22 is larger than the smallest distance between the annular driven surface 14 and the annular driving surface at the left face of the disc 20, as viewed in Figs. 1 and 2, so that the transmission means cannot pass through the space between the drive means and driven means and is therefore pressed by the spring 23 to engagement with the drive means and driven means for reliably transmitting a drive from the drive means to the driven means. Furthermore, a spring 26 may be connected to an extension fixed to the flange 101 and to the leaf spring 23 to increase the force with which the latter urges the transmission means into engagement with I the drive means and the driven means.

It will be noted from Figs. 1 and 2 that if the shaft 19 and disc 20 turn in one direction of rotation they will tend to urge the transmission means 21, 22 into greater engagement with the drive means and the driven means, while if the shaft 19 and disc 20 turn in the opposite direction they will tend to move the transmission means out of driving engagement with the drive means and the driven means. However, the force of the spring 23 and the spring 26 is great enough to reliably hold the trans- -mission means in driving engagement with the drive means and the driven means even if the drive means rotates in a direction which tends to detract from the driving engagement between the transmission means and the drive means and driven means. The shaft 19 is driven by any suitable motor which is not illustrated.

The entire shaft-19 may be shifted simply by disconnecting the collars 19a, 19b shown in Fig. 1 from the shaft 19 and shifting the latter with respect to these col- This disconnection may be effective simply by driving out the pins which fix these collars to the shaft 19, or instead of pins through the holes set screws may be unscrewed in order to release the fixed connection between the collars 19a, 19b and the shaft 19.

Figs. 3-5 show a second embodiment of the structure according to the present invention, the structure of this embodiment being identical with that described above 4. except for the construction of the transmission means, the carrier means which carrie the transmission means, and the means for increasing the force with which the carrier means urges the transmission means into engagement with the drive means and the driven means. Thus, referring to Figs. 3-5, it will be seen that the transmissions means, instead of including a single annular member provided with a peripheral coating of a high coefficient of friction, is in the form of a pair of annular members provided with a pair of peripheral coatings of a high coeflicient of

friction

28, 29. As is apparent from Figs. 3 and 5 in particular, this transmission means 27 is composed of a pair of annular members of different diameters which respectively carry the

peripheral coatings

28, 29. The transmission member of larger diameter engages the driven annular surface 14, while the annular member of smaller diameter frictionally engages the annular driving surface of the disc 20. This transmis sion means 27 also has its axis of rotation substantially perpendicular to the axis of rotation of the shaft19.

The carrier means of Figs. 3-5 also is in the form of a leaf spring, but the leaf spring 30 of the carrier means of Figs. 3-5 is located on the side of shaft 19 which is opposite from the side on which the leaf spring 23 of the embodiment of Figs. 1 and 2 is located. There is more room for the leaf spring 30 at the place where it is shown in Figs. 3 and 4, so that with this embodiment of the invention the parts may be much more compactly arranged and will require an even smaller space. The leaf spring 30 is fixed to the support 10 by an angle member and is provided with an angle member which turnably supports the transmission means 27, in the same way as with the embodiment of Figs. 1 and 2.

Instead of a spring for increasing the force with which the leaf spring urges the transmission means into engagement with the drive means and the driven means, with the embodiments of Figs. 3 and 4 a Weight 31 is pro vided for increasing this force. The weight 31 is schematically shown in Figs. 3 and 4 as carried by an arm 32 which is freely turnable in a suitable bearing carried by the support means 10, so that this weight 31 bears down on a portion of the leaf spring 30. However, the illustration of the weight means of Figs. 3 and 4 is only diagrammatic. Actually a group of Weights may be provided and may engage the leaf spring 30 at any desired location in order to increase the force with which the transmission means 27 is urged into driving engagement with the drive means and the driven means.

It will be noted that with the structure illustrated in Figs. 3-5 there is pure frictional transmission of the drive, and also it will be noted that the transmission ratio is much higher than with the embodiment of the Figs. 1 and 2 even though the space in which the transmission is located is smaller. The reason for this is that the two steps of the transmission provide the higher transmission ratio without requiring more space.

It may be desirable to alter the embodiment of Figs. 3 and 4 so that it combines a friction drive with a gear drive, and in order to accomplish this, the smaller annular member of the transmission means 27 may be formed as a gear and the portion of the disc 20 which engages this smaller transmission member may be provided with teeth to mesh with such a gear. Such a construction is shown in Fig. 7 in which the smaller annular member 29' of the transmission means 2 is formed with gear teeth which mesh with teeth provided at the rim of the disc 20. If desired, however, the annular driven surface 14 may be formed as a gear and in this case the larger annular transmission member would also be formed as a gear to mesh therewith. Such a modification is illustrated in Fig. 6, which shows a driven surface 14 in form of gear, the teeth of which mesh with the gear teeth provided on the larger annular trans mission member 28 of the transmission means 27'.

Where the spindle is required to cooperate with a traveler and a ring, it is necessary that the spindle and ring be coaxial. This coaxial arrangement can be provided if the spindle housing 11 is arranged so that it passes through a bore of the flange 101 which is concentric with the ring, and the spindle housing may have a snug fit in such a bore, or either the bow or the spindle housing may be made slightly conical so as to provide a Wedge fit. However, if such an arrangement is not possible, then each individual spindle must be centered. With the support means shown in the drawings, this is possible, because, as is shown in Figs. 1 and 2, the bottom wall of the support means 10 is formed with an opening 102 through which a tool may be inserted to loosen the nut 12 in order to shift the spindle assembly for centering purposes. The spindle assembly is shifted with respect to the flange 101, and actually the nut 12 is only loosened sufficiently to enable the spindle assembly to be shifted by applying the force of hammer blows to the flange 1-10 of the housing 11. In order to enable such blows to be provided, the casing 10 is also provided with an opening 103. Thus, with the casing shown in the drawings it is possible to center the spindle assembly when necessary.

It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of drives differing from the types described above.

While the invention has been illustrated and described as embodied in a drive for spindles of spinning and twisting machines, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for vari- 'ous applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.

What is claimed as new and desired to be secured by Letters Patent:

1. In a drive for a spindle of a spinning and twisting machine, in combination, support means; drive means and driven means having respectively fixed axes of rotation which extend in difierent directions and being supported for rotation about said fixed axes, respectively, by said support means, said drive means having an annular driving surface located in a plane normal to said axis of rotation of said drive means and said driven means having an annular driven surface coaxial with said axis of rotation of said driven means; annular transmission means having an axis of rotation substantially perpendicular to said axis of rotation of said drive means and having an outer surface engaging said annular driving surface and said annular driven surface; carrier means carried by said support means and car rying said transmission means for free rotation about its axis of rotation, said carrier means being in form of a leaf spring extending substantially parallel to the axis of rotation of said transmission means in the space between said drive means and said driven means and supporting said transmission means for movement in a direction substantially perpendicular to a straight line extending between the point of contact between said transmission means and annular driving surface and the point of contact between said transmission means and said annular driven surface; and spindle means fixed coaxially to said driven means to be driven thereby.

2. In a drive for a spindle of a spinning and twisting machine, in combination, support means; drive means and driven means having respectively fixed axes of rotation which extend in different directions and being 6 supported for rotation about said fixed axes, respectively, by said support means, said drive means having an annular driving surface located in a plane normal to said axis of rotation of said drive means and said driven means having an annular driven surface coaxial with said axis of rotation of said driven means; annular transmission means having an axis of rotation substantially perpendicular to said axis of rotation of said drive means and having an outer surface engaging said annular driving surface and said annular driven surface; carrier means carried by said support means and carrying said transmission means for free rotation about its axis of rotation; said carrier means comprising a leaf spring fixed at one end thereof to said support means and extending therefrom substantially parallel to the axis of said transmission means in the space between said drive means and said driven means, and an angle member fixed to the free end of said leaf spring and carrying said transmission means said carrier means urging said transmission means into engagement with said driving means and said driven means; and spindle means fixed coaxially to said driven means to be driven thereby.

3. In a drive for a spindle of a spinning and twisting machine, in combination, support means; drive means and driven means having respectively axes of rotation which extend in different directions and being supported for rotation about said axes, respectively, by said support means, said drive means having an annular driving surface located in a plane normal to said axis of rotation of said drive means and said driven means having an annular driven surface coaxial with said axis of rotation of said driven means; annular transmission means having an axis of rotation substantially perpendicular to said axis. of rotation of said drive means and having an outer surface engaging said annular driving surface and said annular driven surface; carrier means carried by said support means and carrying said trans mission means for free rotation about its axis of rotation, said carrier means being in the form of a leaf spring carrying said transmission means and urging same into engagement with said driving means and said driven means; means engaging said leaf spring for automatically increasing the force with which the latter urges the transmission means into engagement with said driving means and said driven means whenever said leaf spring is deflected in a direction tending to move said transmission means out of engagement with said driving means and said driven means; and spindle means fixed coaxially to said driven means to be driven thereby.

4. In a drive for a spindle of a spinning and twisting machine, in combination, support means; drive means and driven means having respectively axes of rotation which extend in dilferent directions and being supported for rotation about said axes, respectively, by said support means, said drive means having an annular driving surface located in a plane normal to said axis of rotation of said drive means and said driven means having an annular driven surface coaxial with said axis of rotation of said driven means; annular transmission means having an axis of rotation substantially perpendicular to said axis of rotation of said drive means and having an outer surface portion engaging said annular driving surface and said annular driven surface; carrier means carried by said support means and carrying said transmission means for free rotation about its axis of rotation, said carrier means being in the form of a leaf spring carrying said transmission means and urging same into engagement with said driving means and said driven means; spring means operatively connected to said leaf spring for increasing the force with which the latter urges said transmission means into engagement with said driving means and said driven means; and spindle means fixed coaxially to said driven means to be driven thereby.

5. In a drive for a spindle of a spinning and twisting machine, in combination, support means; drive means and driven means having respectively axes of rotation which extend in different directions and being supported for rotation about said axes, respectively, by said support'means, said drive means having an annular driving surface located in a plane normal to said axis of rotation of said drive means and said driven means having an annular driven surface coaxial with said axis of notation of said driven means; annular transmission means having an axis of rotation substantially perpendioular to said axis of rotation of said drive means and having an outer surface portion engaging said annular driving surface and said annular driven surface; carrier means carried by said support means and carrying said transmission means for free rotation about its axis of rotation, said carrier means being in the form of a leaf spring carrying said transmission means and urging same into engagement with said driving means and said driven means; weight means engaging said leaf spring for increasing the force with which the latter urges said transmission means into engagement with said driving means and said driven means; and spindle means fixed coaxially to said driven means to be driven thereby.

6. In a drive for a spindle of a spinning and twisting machine, in combination, support means; drive means and driven means respectively having fixed axes of rotation which extend indifferent directions and being supported by said support means for rotation about said fixed axes of rotation, respectively, said drive means having an annular driving surface located in a plane normal to thetaxis of rotation of said drive means and said driven means having an annular driven surface coaxial with said axis of rotation of said driven means; transmission means having an axis of rotation substantially perpendicular to that of said drive means located between and engaging said annular driving surface and said annular driven surface, said transmission means being composed of a pair of annular transmission members of different diameters one of which engages said annular driving surface and the other of which engages said annular driven surface; resilient carrier means in form of a leaf spring extending substantially parallel to the axis of rotation of said transmission means in i the space between said drive means and said driven means and carrying said transmission means for free rotation about its axis of rotation and for urging said transmission means in engagement with said drive means and said driven means; and spindle means fixed coaxially to said driven means to be driventhereby.

7 In a drive fora spindle of aspinning and twisting machine, in combination, drive means and driven means respectively having difierent and fixed axes of rotation and carried by said support means for rotation about said fixed axes of rotation, respectively, said drive means having an annular driving surface located in a plane normal to said axis of rotation of said drive means and said driven means having an annular driven surface coaxial With said axis of rotation of said driven means, one of said annular surfaces being toothed; transmission 'means having an axis of rotation substantially perpendicular to that of said drive means engaging said annular surfaces for transmitting a drive from said drive means to said driven means, said transmission means being composed of a pair of annular members of different diameters respectively engaging said annular surfaces, the annular member engaging said toothed annular surface being also toothed and meshing therewith ment with said drive means and said driven means; and spindle means fixed coaxially to said driven means to be driven thereby.

References Cited in the file of this patent UNITED STATES PATENTS 501,666 Schrepfer July 18, 1893 1,289,818 Kurkjian Dec. 31, 1918 1,436,268 Leslie Nov. 21, 1922 1,806,984 Prout May 26, 1931 FOREIGN PATENTS 3,163 Great Britain of 1864