US2894365A

US2894365A - Mountings of spindles in spinning or thread twisting machines

Info

Publication number: US2894365A
Application number: US668213A
Authority: US
Inventors: Meyer-Busche Gert
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-06-28
Filing date: 1957-06-26
Publication date: 1959-07-14
Anticipated expiration: 1976-07-14
Also published as: BE557884A; DE1021771B; FR1176242A; GB824212A

Description

July 14, 1959 G. MEYER-BuscHE 2,894,365

MOUNTINGS OF SPINDLES IN SPINNING OR THREAD TWISTING MACHINES Filed June 26, 1957 United States Patent MOUNTINGS OF SPINDLES IN SPINNING OR THREAD TWISTING MACHINES Gert Meyer-Busche, Munich, Germany Application June 26, 1957, Serial No. 668,213

Claims priority, application Germany June 28, 1956 4 Claims. (Cl. 57-132 This invention relates to mountings of spindles in spinning or thread twisting machines, wherein said spindles are resiliently supported relative to the spindle rail.

Attempts have been made heretofore to support the mounting of spinning and twisting spindles flexibly against the spindle rail by means of cup springs, specially formed springs or coil springs in order to damp or eliminate the transmission of vibrations to the spindle rail. The hitherto known solutions are unsatisfactory because they do not allow sufficiently for positive or forced spindle centering and damping of natural and resonant vibrations, so that vabriations, disturbing the operation and function of the machine, are transmitted and could not be avoided.

An attempt has also been made, by means of flexible, synthetic plastic layers or glands, which press into the thread of the spindle bearing housing, to secure the fastening nut on the underside of the spindle rail and hence the centering of the spindle mounting in the spindle rail. This solution is, however, complicated and expensive, because it necessitates a counter-support in the form of a flange which is either made integral with the spindle bearing housing or must additionally be provided.

The present invention overcomes the aforesaid and other drawbacks by a simplified and inexpensive supporting system for the spindle and has as one of its objects to provide means affording efficacious resilient support for the mountings of spinning and twisting spindles against the spindle rail, which support is particularly advantageous in operation, as well as in manipulation to bring about assembly and disassembly. It is another important feature of the invention to provide means ensuring the avoidance of formation and transmission of vibrations in the support parts while an effective fastening or anchoring for the spindle mounting on the spindle rail is attained. It is a further object of the invention to provide means conducive to a highly economical spindle mounting structure which permits intense damping and very advantageously an accurate spindle centering.

To this end, according to the invention, in spindle mountings of the abovementioned kind, a cup spring is employed, which on the one hand is supported so as to positively center same by means of a slotted collar disposed on the inside edge of said cup spring, relative to the corresponding flange of the spindle mounting, and which is anchored, on the other hand, relative to the spindle rail by means of an elastically deformable vibration-damping element, which, when the cup spring is loaded, presses into an intermediate space provided between the spindle mounting and the spindle rail and thus automatically ensures the spindle centering in the spindle rail.

The provision according to the invention of a cup spring having a slotted collar at the inside edge in such a manner that said collar presses lightly and resiliently by its inner surface, which may be curved, against a correspondingly rounded flange of the spindle hearing or 2,894,365 Patented July 14, 9

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spindle bearing housing, has the advantage that when the cup spring is loaded the inside edge of said cup spring contracts and thus exerts a resilient action against the flange of the spindle mounting in consequence of the slotting and lever action in the collar, so that the loaded cup spring will be forced to be centered on said flange. By means of a play-free and simultaneously axially and radially resilient support, vibrations and distortions between the spring system and the spindle mounting are avoided.

This arrangement furthermore allows with great advantage that the spindle mounting flange hitherto customary and made generally large in respect to spinning technique and from the standpoint of production, can be kept conveniently and economically small, for example in the form of a split ring round in cross-section, and hence the vertical adjustment of the spindle mounting will be greatly simplified.

Cup springs develop Very great spring forces in a small space and at the same time have very favorable natural damping. This damping action is further increased in an advantageous manner according to the invention by supporting the cup spring against the spindle rail on an elastically deformable damping element, for example, on a ring made of relatively soft plastic composition, such as polyvinyl chloride. By suitable modification of the elasticity of said ring or element and by outwardly bevelling its surface facing the cup spring, the cup spring tension and damping action desired for the elastic fastening of the spindle mounting on the spindle rail are conformed to one another and at the same time the extent to which the elastic element presses into the free space at the spindle rail bore for centering the spindle and securing same in place is readily established.

These and other objects of the invention will become further apparent from the following detailed description, reference being made to the accompanying drawing showing a preferred embodiment of the invention.

In the drawing:

Fig. 1 is a horizontal section of a spindle mounting or housing supported against the spindle rail by means of a cup spring shown in unloaded condition.

Fig. 2 is a section through the mounting assembly with the cup spring in loaded condition, the spindle bearing housing being shown in elevation.

Referring now more particularly to the attached drawing, there is disclosed in Fig. 1 cup spring 1 supported by its collar 2, which has a number of radial slots 3, on a split ring 4 which is anchored on the spindle bearing housing 5, the collar 2 being slightly crimped at its upper edge and after being pushed or forced on resiliently engages from below over the split ring 4. The unloaded cup spring 1 as shown in Fig. 1 rests only at its outer edge on the elastic ring or element 6, which supports the assembly relative to the spindle rail 7. The bore 8 in the spindle rail 7 is sufliciently large for centering purposes (in the example shown, larger than the diameter of said split ring 4) and produces an intermediate space or clearance between the spindle bearing housing 5 and spindle rail 7.

Fig. 2 shows the parts of the aforesaid mounting assembly with the cup spring 1 in loaded state or condition in consequence of the tightening of the nut 10 engaging the spindle housing 5 and bearing against rail 7. Fig. 2 especially shows how the cup spring 1, after attaining a desired initial tension, for example on reaching a substantially horizontal phase of its characteristic is pressed with its entire underside or face on the elastic ring 6 and so deforms the latter that a central part of its mass transforms to an enlarged rim or ring 9 and presses into the clearance or free space of the spindle rail bore 8 which is little larger than the spindle housing 5, and thereby secures the centering of the housing with its spindle (not shown).

Various changes and modifications may be made without departing from the spirit and scope of the present invention and it islintended that such obvious changes and modifications be embraced by the annexed claims.

Having thus described the invention, What is claimed as new and desired to be secured by Letters Patent is:

1. A mounting for a spindle for use in spinning and like machines having a spindle rail with a bore; comprising a cup spring provided with a slotted collar, a spindle housing provided with an annular projection adapted for engagement with and abutment by said collar, said housing extending through said bore of said spindle rail with predetermined clearance, and an elastically deformable damping element located between said cup spring and said spindle rail and provided with a central part adapted to be deformed into a rim pressed into said clearance provided between the spindle rail bore and the spindle housing to thereby secure the spindle when passing through said spindle housing in centering relation to said bore of said spindle rail.

2. A mounting according to claim 1, wherein said damping element is in the form of a ring made of a composition of polyvinyl chloride, said ring being conical in cross-section and being adapted to form an abutspindle i ment against the spindle rail and to substantially tightly embrace a corresponding part of said spindle housing.

3. A mounting according to claim 1, wherein said annular projection on said spindle housing forms a split ring having a diameter smaller than that of said bore, whereby said housing may be inserted in said bore for assembly purpose.

4. A mounting for a spindle for use in combination with a spindlerail having a bore, comprising a cup spring having a slotted collar, a spindle housing extending through said bore of said spindle rail with predetermined clearance, a split ring on said spindle housing, said collar abutting and engaging said split ring, and an elastically deformable damping element of relatively soft plastic material located between said cup spring and said spindle rail and provided with a central part adapted to be deformed into a rim pressed into said clearance provided between the spindle rail bore and the spindle housing to thereby secure the spindle when passing through References Cited in the file of this patent UNITED STATES PATENTS 2,497,865 Cochran Feb. 21, 1950