DE1685975A1 - Spindle for spinning and twisting machines - Google Patents

Description

DIPL.-ING. F. ROSENKE DR.-ING. HH WILHELM Stuttgart, August 14, 1967

7000 Stuttgart-1

Gymnaiiumstr. 31B JJr. W.

T «L 0711/291133

Re .; Patent and utility model aid application D 3359

Sign in Spindelfabrik Süßen

Sohurr, Stahlecker & Grill Sweetie (Württ.)

Spindle for spinning and twisting machines

The invention relates to a spindle for spinning and twisting machines separated from the neck bearing in the spindle bearing housing arranged foot bearing, which is down directly or via a bushing surrounding the foot bearing on the support surface a held in the spindle bearing housing support means radially movably supported, with a sleeve-shaped, over a Part of its length resilient, preferably the centering of the Pußlgger serving coupling member radially on the support means and is guided on the Puss-bearing or on a bushing surrounding the Puss-bearing, according to patent (patent application S 107 208 VIIa / 76c).

109342/0347 _BAD

Conventional foot bearings are provided for these spindles, in which a conical thrust bearing is incorporated A cylindrical or slightly conical bore to absorb the radial bearing forces is connected at the top. With smaller ones This foot bearing is usually made of hardened spindles Steel, with larger spindles made of bearing bronze. With this type of storage, there are misalignments between the bearing tip and the radially leading part, both in the spindle shaft and in the foot bearing, which reduces the running properties the spindle can be adversely affected. The wear and tear on the shaft tip and the corresponding thrust bearing, which are particularly significant in the case of heavy spindles, have an unfavorable effect on the running of the spindle and change it also the height of the spindle shaft. The sliding friction between the lower smooth face of the Foot bearing and the support surface of the support means can affect the good running of the spindles, in particular for large spindles with heavy bobbin weights. An improvement results from those shown in the main patent Intermediate pieces, especially if they are designed as steel disks that are convex on both sides or as a hardened ball are.

Bs has now been found that the running properties of the spindles according to the main patent can be significantly improved if, according to the present invention, the foot bearing is separated is in a track plate that absorbs the axial pressures

1 0 9 8 A 2/0 3 U 7 _ .-. _

BATH ORIGINAL

and one independently movable, the radial pressures receiving bearing sleeve, and when the coupling member is guided radially on the bearing sleeve or a bushing surrounding it will. In this design of the foot support according to the invention, the end face of the rotating spindle shaft leads on the track plate, which does not rotate or only rotates very slowly, circular, elliptical movements or similar. These movements are not caused by tilting movements of the footrest or not exactly produced bearing surfaces of the Pußlager and the support surface disturbed, which is the case with the known closed foot bearings may be the case. In addition, the mentioned circular movements cause less friction than the pushing ones Movements of the known non-rotating foot bearing, the frictional forces occurring on the lower support of the bearing sleeve are very low, as the axial pressures from the spindle shaft no longer act on the bearing sleeve. This arrangement also results in good bearing lubrication and heat dissipation.

In a further embodiment of this storage according to the invention, taking into account the various types Arrangements of the coupling link according to the main application some particularly useful embodiments. For spindles that do not have a particularly large jerk-like axis in the axial direction Are exposed to stresses, it is expedient to use the

- 4 109842 / 03A7

Track plate of the foot bearing directly on the support means cut off. Bs can also be thought of in such cases, the track plate with the support means from one piece to manufacture.

In other cases, especially when the spindles are exposed to great shock loads in the axial direction it is advantageous to connect the track plate via an intermediate piece that is elastically deformable at least in the axial direction, preferably a plastic buffer ring to be supported on the support means. It is there expedient to provide the support means and / or the track plate with lugs that have a small axial distance result between support means and track plate, whereby the axial deformability of the intermediate piece is limited. In order to it is ensured that the spindle shaft cannot be pushed downwards inadmissibly far.

A particularly advantageous storage is obtained when the track plate has a flat support surface for the spindle shaft and the end face of the spindle shaft is slightly convex, preferably arched with a radius of 25-35 mm is. Furthermore, it is advantageous to provide the track plate with plane-parallel surfaces on both sides and with radial ones Lead game in the coupling link. Not only does this make it easy to manufacture, but it also becomes a small one

- 5 109842/0347

BATH ORIGINAL

Shifting and twisting of the track plate possible, which means better running-in and less wear the spindle bearing causes.

An expedient embodiment of the invention using cage springs as a coupling link and support bolts as a support means results when the coupling member with its JSndteil the bearing sleeve or a bushing surrounding it includes tension-free and the bearing sleeve is supported on the track plate. A simple and space-saving foot bearing arrangement results when the bearing sleeve is located radially directly in a provided between it and the spindle bearing housing, preferably designed as an oil coil damping means is arranged. It is advantageous if a arranged above the bearing sleeve in the damping means, preferably made of plastic and in the spindle bearing housing Locking sleeve held in a torsion-proof manner and axially displaceable to a limited extent with inner lugs in recesses in the bearing sleeve engages and thus secures the latter against impermissible radial displacement and rotation.

In a special embodiment, as in the main patent an intermediate piece is provided between the support means and the foot bearing can advantageously also be provided, that the adapter also has one several, preferably three radially asymmetrically arranged recesses having cage

- 6 1 ^Λ 8 8 «V 0 3 4 7 _{BAD 0R} , _G | MAL

disk with guided in these recesses rolling elements, preferably balls, consists. In such an embodiment, the Pußlager does not necessarily have to be in a track plate and a bearing bush can be divided. Even with the direct support of a Puülager according to the main patent over this roller bearing on the support means ensures that the spindle runs particularly smoothly.

The invention is to be explained in more detail with the aid of the figures. Bs shows:

Pig. 1 shows the longitudinal section through the lower part of a spindle bearing with directly on the support bolt overlying track plate and in an oil spool Supported bearing sleeve, which is secured against twisting and shifting by a locking sleeve is secured at the top;

Pig. 2 the cross section through the storage of the pig. I, after the line II-II of the Pig. I cut; the oil spool is omitted;

Pig. 3 the longitudinal section through the left half of a Spindle bearing similar to Pig. I, but with an elastic intermediate piece between the track plate and Support bolt and with a bush encompassing the bearing sleeve;

109842/0347

BATH ORIGINAL

4 shows the longitudinal section through the left half of a spindle bearing similar to Pig. 1, each with one Track plate which forms one piece with the support bolt;

Fig. 5 shows the longitudinal section through the left half of a Spindle bearing similar to Fig. 1, but with one the bushing surrounding the bearing sleeve with little play, which rests on the support bolt and which Basket spring leads}

Fig. 6 shows an embodiment in which in a foot bearing According to the main patent, an intermediate piece between the foot bearing and support means in the form of a special one Rolling bearing is used and

FIG. 7 shows the top view of the roller bearing of FIG. 6.

In Fig. 1, the lower cylindrical part of the spindle shaft 1 is with a slightly curved end face la provided under the axial pressure of the spindle barrel part revolves on the track plate 4a. The radial pressure of the spindle running part is absorbed by the bearing sleeve 4b, which is supported on the track plate 4a and in the oil sink 9 is performed. The support bolt 6 is also the end cap for the spindle bearing housing 3. The

109842/0347 " ⁸ ~

bolt 6 guided and serving as a coupling link basket spring 8 engages around the remote lower part 4c of the Bearing sleeve. The track plate 4a rests on the support bolt 6 and is in the cage spring with little radial play 8 led. The oil spool 9 is secured against inadmissible downward displacement by the spacer ring 10a and against impermissible axial displacement upwards through the spacer tube 10 clamped in the G-housing bore, This spacer tube engages with its curved tabs 10b in recesses 5a of the plastic Locking sleeve 5, which at its upper end radially in the spacer sleeve 10 and is guided at its middle and lower part in the oil spool 9 with slight play.

At its lower end, the locking sleeve 5 has lugs 5b which engage in slots 4d of the bearing sleeve 4b and rest on the bottom of these slots, see also FIG Housing t> secured and also limited in its axial mobility upwards. Recesses 4e on the bearing bush ensure sufficient oil circulation.

In Fig. 3 is to smoothly absorb the axial shocks of the spindle running part between the track plate 34a and the Support bolt 36 is an elastic intermediate piece in the form of a ring 37 made of elastic plastic, for example

- 9 _. 109842/0347

BATH ORIGINAL

made of polyethylene. The pin 36f worked on the support bolt guides the ring 37 and forms a small, for example 0.6 1.0 mm, gap ^H s ⁿ with the track plate 34a. This limits the elastic compression of the ring 37 in the axial direction. Any permanent deformation of the ring 37 that may occur is thus kept within permissible limits. The bearing sleeve 34b is pressed into the bush 35, which in turn is guided in the damping means 39. The securing of the sleeve 35 against rotation in the housing 33 is not shown and is carried out in a manner similar to that in FIG. 1.

In Fig. 4, the track plate 44a is attached to the support bolt 46 machined pin which protrudes into the bearing sleeve 44b, which is supported on the support bolt 46. The pin 44a can have such a diameter that it also limits the radial movements of the bearing sleeve and thus the radial movements of the damping means 49. the Track plate 44a can also be a separate from the support bolt 46, be both sides plane-parallel and hardened plate, which rests on the support bolt 46 and like the one drawn Pin 44a protrudes into the bearing sleeve 44b.

In Pig. 5 sits the savings plate 54a in the support bolt The bearing sleeve 54b is supported on the track plate 54a

- 10 ^109842/0347

- ίο -

and lies in a damping bushing 55 with little play. The lower end of this damping sleeve has an inwardly directed plunge 55e over which it extends the support pin 56 is supported. The spindle shaft 51 runs with its flat lower end face on the slightly convex curved running surface of the track plate.

In FIGS. 6 and 7, a special embodiment is shown in which between the foot bearing 64 'this is not the case here is divided into Spurplattejf and bearing bush, and the Support means 66 a roller bearing 67 is used, which consists of three radially symmetrically arranged recesses owning cage disk 67a with balls 67b guided in these recesses. The foot bearing 64 is thereby centered by a basket spring 68. The roller bearing can but also in an embodiment with a track plate in and bearing bushing dismantled foot bearings are installed, the roller bearing then, for example, between the track plate 4a and the support means 6 of FIG. 1 is arranged.

- 11 -

109842/03 4 7

BATH ORIGINAL

Claims (10)

- li - Claims 1 «spindle for spinning and twisting machines with in the spindle bearing housing from the neck bearing arranged separately foot bearing, which looks down directly or over a the bush surrounding the foot bearing on the support surface of a support means held in the spindle bearing housing radially movably supported, with a sleeve-shaped, over a Part of its length resilient, preferably the centering of the foot bearing serving coupling member radially the support means "and is guided on the foot bearing or on a bushing surrounding the foot bearing, according to patent ...... (Patent application S 107 208 VIIa / 76e), characterized in that the foot bearing consists of one of the axial pressures receiving track plate (4a) and an independently movable, the radial pressures absorbing bearing sleeve (4b) and the coupling member (8) is guided radially on the bearing sleeve or a bushing surrounding it. 2. Spindle according to claim 1, characterized in that the track plate (4a) of the foot bearing is directly on the Support means (6) is supported. 3. Spindle according to claim 1, characterized in that the 109842/03 /. 7 - 12 - BATH ORIGINAL Track plate (44a) with the support means (46) a stack forms. 4. Spindle according to claim 1, characterized in that »that the track plate (34a) of the foot bearing β is elastically deformable at least in the axial direction Intermediate piece (37), preferably a buffer ring made of plastic, is supported on the support means (36). 5. Spindle according to claim 4, characterized in that the support means (36) and / or the track plate (34a) approaches (36f), which result in a small axial distance (5) between the support means and the track plate, the axial deformability of the intermediate piece (37) limited. 6. Spindle according to claim l, and one or more of the other claims, characterized in that the track plate (4a) has a flat support surface for the spindle shaft (1) and the end face (la) of the spindle shaft is slightly convex, preferably arched with a radius of 25-35mm. 7. Spindle according to claim 1, characterized in that the track plate (4a) of the foot bearing on both sides plane-parallel Has surfaces and is guided with radial play in the coupling member (8). 109842 / 03A7 - τ * BAD LOCAL 8. Spindle according to claim 1, preferably as a basket spring designed coupling link and preferably designed as a support bolt support means »characterized in, that the coupling member (8) with its JSnöteil the lagerhlilse (4b) or a bushing surrounding it without tension and sioh the bearing sleeve on the track plate (4a) supported, 9 · Spindle according to claim 1 and one or more of the other claims, characterized in that the bearing sleeve (4b) radially directly in one provided between it and the spindle bearing housing (3), preferably is arranged as an oil coil designed damping means (9). 10. Spindle according to claim 9? characterized in that a above the bearing sleeve (4b) in the damping means (9) and preferably made of plastic torsion-proof in the spindle bearing housing and limited axially slidably held Sioherungsbüchse (5) engages with their lugs (5b) in recesses in the bearing sleeve and so that the latter secures against impermissible radial displacement and rotation. 11 »Spindle, in particular according to claim 1, in the case of Patent ...... (patent application S 107 208 VIIa / 76c) an intermediate piece between the support means and the foot bearing 10 ^ 4 2/0347 is arranged that with a small Spial iir «coupling link is performed, characterized in that the Intermediate piece consisting of several, preferably three, radially symmetrically arranged cutouts on the south Cage washer (6? A) with guided in this recess Rolling bodies, preferably balls (67b). 9.8 47/0347 BATH