DE102009021647A1 - Shaft system for use in a chuck of a winding head - Google Patents

Abstract

The invention relates to a shaft system (100) for use in a chuck (110) of a winding head (120) for winding, for example, synthetic threads, with at least one drive or output shaft (1) and at least one axle (3) or further shaft, which (3) is arranged coaxially to the drive or output shaft (1), wherein at least one of these components (1, 3) as a hollow shaft or hollow shaft (3) and therein the other component (1) at least partially received and with respect to the hollow shaft or Hollow shaft (3) by means of at least one bearing (4, 5) is supported. According to the invention, it is provided that the bearing is designed as a ball roller bearing (4; 5) which is arranged radially inward on the outer circumference of the rotatable shaft (1) and radially outside on the inner circumference of a stationary axle (3).

Description

Field of the invention

The The invention relates to a shaft system for use in a chuck of a winding head, with at least one drive or output shaft and at least one axis or further shaft, which is arranged coaxially with the drive or output shaft, wherein at least one of these components designed as a hollow shaft or hollow shaft and therein the other component at least partially received and opposite the hollow shaft or hollow axle supported by at least one bearing is. The invention further relates to a chuck for Spulköpfe of spinning machine and a winding head of a spinning machine and a spinning machine for synthetic fibers with a such shaft system.

Background of the invention

Shaft systems of the type discussed here, such as those used in a chuck of a winding head for a synthetic fiber spinning machine, usually have deep groove ball bearings, roller bearings and / or spindle bearings for supporting the drive or output shaft. From the DE 30 45 486 A1 a generic shaft system is known in which the local spool shaft is supported by means of deep groove ball bearings relative to an axis with housing function, wherein the axis is arranged coaxially to the spool shaft. The axle is designed as a hollow axle, in which the spool shaft is at least partially received.

by virtue of the coaxially nested waves of such a nested Wellensystems is the one available for storage standing space in the radial direction very limited. If so Deep groove ball bearings are used, the load capacity of the this limited space suitable bearing sizes too low. By contrast, the usable roller bearings are too short Grease service life and must already after a short period of use be replaced. The use of spindle bearings for storage The drive or output shaft is also relatively expensive.

Object of the invention

Of the Invention is based on the object, a shaft system with the above mentioned features, which despite its limited Space in the radial direction, a high radial load capacity and whose storage is relatively inexpensive. Furthermore, a corresponding chuck for a spinning machine and a winding head with such a chuck are proposed.

Summary of the invention

to Solution to the problem, a shaft system is proposed which has the features mentioned in claim 1. advantageous Further developments are mentioned in the associated subclaims.

The Shaft system according to the invention is particularly for the use in a chuck of a spinning machine winding head, especially suitable for a high-speed winding head, such as For example, they Spinnvorrich lines for manmade fiber be used. The shaft system has at least one drive or output shaft and at least one axis or further shaft on which coaxial with respect to the drive or output shaft is arranged. It is at least one of these components as Hollow shaft or hollow shaft formed and therein the other component at least partially absorbed and supported the hollow shaft or hollow axle by means of at least one bearing. Such an arrangement of the drive or output shaft opposite the axis or further wave is nested within the meaning of the invention Shaft arrangement or nested wave system called. It is according to the invention provided that the at least one bearing as a ball roller bearing is trained.

By This construction clearly shows the bearing of the shaft system higher load capacity in the radial direction than the previously used bearings, so that a shaft system with relatively high rigidity is feasible. Due to the narrower rolling element a ball roller bearing against the balls of a conventional Ball bearings is available with the same bearing width more grease space, so that the grease life of such storage in particular Significantly extended for fast rotating nested shaft systems is. Compared to conventional storage using deep groove ball bearings allows the use of ball roller bearings with the same size the realization of radially higher loaded shaft systems or, if the load is the same size, a so-called Downsizing existing constructions.

Under For the purposes of the invention, a shaft is understood as a machine element, which for forwarding rotational movements and torques as well serves for the storage of rotating parts. Under an axis becomes For the purposes of the invention, a machine element understood, which for carrying and storing rotatable components. Different to the shaft, however, does not transmit the axle torque.

According to a first embodiment of the invention, it is provided that the ball roller bearing having a one-piece cage for the ball rolls. As a result, the shaft system is particularly suitable for high speeds. Preferably, the cage should be designed as a steel cage, as this way the cage is designed to be particularly stable and thus far a further measure to improve the storage, especially at very high speeds, is realized.

To An alternative embodiment of the invention is provided, that the ball roller bearing a snap cage for having the ball rollers. This is a storage for low to medium speeds of the wave system cost realized. A cost advantage arises especially if according to one embodiment of the invention, the snap cage made of a suitable plastic, such as polyamide.

To A further embodiment of the invention provides that the ball roller bearing radially inward on the outer circumference of rotatable shaft and radially outward on the inner circumference of a stationary Axis is arranged.

It suggests that the ball roller bearing a pressure angle between about 5 ° and about 30 °. This is one high smoothness of the stored drive or output shaft realized. Preferably, the ball roller bearing should have a pressure angle of about 15 °. This allows operation of the shaft system be realized with very high smoothness.

On An improvement in the smoothness also aims at the design of the Invention, according to which the ball roller bearing is axially biased.

Provided the shaft system exposed to the highest radial loads is, it makes sense that the ball roller bearing multi-row, for example, two-row, is trained.

According to one Another variant may be provided that the ball roller bearing is formed without a separate inner ring, and that the radially inward arranged respective track for the ball rollers on the is formed radially inwardly arranged rotatable shaft.

Provided for supporting the drive or output shaft against the at least one axle or further shaft at least two ball roller bearings are provided according to an embodiment of the invention, the Ball roller bearings in X or O arrangement to each other. Also this measure aims at acting on the shaft system forces in radial and axial direction to withstand, so that the shaft system even with such a stress sufficient life Has.

It suggests that the ball roller bearings a support bearing form with respect to the drive or output shaft. Thereby is the axial play of the bearing to ensure an optimal function accordingly adjustable or adjusted.

alternative It may also be that the ball roller bearings in a fixed-floating are arranged.

To A further embodiment of the invention provides that the hollow axle or hollow shaft by means of damping elements opposite a hollow cylinder arranged radially on the outside Supporting axis supports

Prefers is the shaft system according to the invention part a chuck. Preferably, the chuck is a component a winding head of spinning machines, preferably a high-speed winding head for the manufacture of man-made fibers. Preferably finds such Spulkopf its use in spinning plants for the manufacture of man-made fibers.

Brief description of the drawings

The Invention will be described below with reference to the accompanying drawings explained in more detail in several embodiments. Showing:

1 a possible embodiment of a nested shaft system with a ball roller bearing in a schematic longitudinal sectional view,

2a an alternative ball roller bearing for use in the shaft system according to 1 .

2 B another alternative ball roller bearing for use in the shaft system according to 1 , and

3 a chuck of a winding head of a spinning machine with a nested shaft system according to 1 in plan view.

Detailed description the drawings

1 shows a schematic representation of a so-called nested wave system 100 with a central output shaft 1 , which at one end with an output element 2 , such as a socket, rotatably connected. The shaft system 100 also has a stationary axis 3 in the manner of a carrier bush, which coaxial with the output shaft 1 is arranged and the output shaft 1 at least partially coaxially receives in the axial direction.

For storage of the output shaft 1 has the shaft system 100 at least two rolling bearings 4 . 5 on, which are arranged in the axial direction at a distance from each other, with its outer periphery against the axis or carrier bushing 3 support and with its inner circumference the output shaft 1 wear. The carrier bush 3 supports radially outside via elastomeric damping elements 6 against another rotationally fixed axis 7 which is coaxial with the output shaft 1 is arranged. The non-rotatable axle 7 is designed as a hollow axle and surrounds the carrier bushing 3 coaxial. The non-rotatable axle 7 is preferably arranged fixed to the housing and performs a holding function for the carrier bushing 3 out. The non-rotatable axle 3 or carrier bush and the axle 7 are preferably arranged stationary.

According to the invention are the rolling bearings 4 . 5 each formed as a ball roller bearing. The ball roller bearings 4 . 5 form a support bearing for the output shaft 1 , In the embodiment according to the 1 are the ball roller bearings 4 . 5 single-row trained.

As in particular from 2a and 2 B can be seen, the ball roller bearings 4 . 5 be formed double row, the ball rollers 8th one row to the ball rolls 9 the other row at the same pressure angle ( 2a ) or the ball rollers 10 one row to the ball rolls 11 the other row at the opposite pressure angle ( 2 B ) can be arranged to each other. This allows the shaft system 100 be implemented according to an alternative embodiment in X or O arrangement of the ball roller bearings.

3 shows a possible installation example of the shaft system 100 according to 1 , The shaft system 100 is there part of a chuck 110 a spinning machine winding head 120 , Such spinning machines are used, for example, for the manufacture of man-made fibers and enable take-up speeds of up to 8000 meters per minute. Thus, the winding heads are so-called high-speed winding heads, in which the chuck is a fast-rotating rotor system, which undergoes considerable weight gain during winding. At the winding head 120 are several coils 130 arranged one behind the other in the axial direction and with the output element 2 rotatably coupled, so that the coils 130 over the output shaft 1 and the output element 2 are driven. The output shaft 1 is via a clutch 140 driven by an electric motor, not shown. The non-rotatable axle 7 of the wave system 100 according to 1 is via a flange 150 connectable with a housing, not shown.

Due to the enormous increase in weight of the bobbins during the winding of man-made fibers and the desired longer chucks with higher winding speeds highest demands are placed on the carrying capacity of the storage. The use of ball roller bearings for supporting the output shaft 1 is therefore particularly suitable for such a winding head.

The Inventive storage by means of ball roller bearings offers itself on the one hand with all wave systems coaxial with each other arranged waves, which against each other are to be stored rotatably. In addition, offers a such storage concept especially for systems with highest Requirements for radial load capacity and especially fast rotating output shafts.

1

Drive shaft, output shaft

2

Output element, Rifle

3

Axis, support bushing

4

Roller bearing, Ball Roller Bearings

5

Roller bearing, Ball Roller Bearings

6

damping element

7

Fixed rotation axis

8th

ball roller

9

ball roller

10

ball roller

11

ball roller

100

wave system

110

chuck

120

winding head

130

Do the washing up

140

clutch

150

flange

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3045486 A1 [0002]

Claims (15)

Shaft system ( 100 ) for use in a chuck ( 110 ) of a winding head ( 120 ), with at least one drive or output shaft ( 1 ) and at least one axis ( 3 ) or another wave, which ( 3 ) coaxial to the drive or output shaft ( 1 ), wherein at least one of these components ( 1 . 3 ) as a hollow shaft or hollow axle ( 3 ) and in which the other component ( 1 ) at least partially received and compared to the hollow shaft or hollow shaft ( 3 ) by means of at least one bearing ( 4 ; 5 ) is supported, characterized in that the bearing as a ball roller bearing ( 4 ; 5 ) is trained. Shaft system according to claim 1, characterized in that the ball roller bearing ( 4 ; 5 ) has a one-piece cage for the ball rolls, which consists of steel. Shaft system according to claim 1, characterized in that the ball roller bearing ( 4 ; 5 ) has a snap cage for the ball rollers, which consists of polyamide. Shaft system according to one of the preceding claims, characterized in that the ball roller bearing ( 4 ; 5 ) radially inwardly on the outer periphery of the rotatable shaft ( 1 ) and radially outward on the inner circumference of a stationary axle ( 3 ) is arranged. Shaft system according to one of the preceding claims, characterized in that the ball roller bearing ( 4 ; 5 ) has a pressure angle between 5 ° and 30 °. Shaft system according to claim 5, characterized in that the ball roller bearing ( 4 ; 5 ) has a pressure angle of about 15 °. Shaft system according to one of the preceding claims, characterized in that the ball roller bearing ( 4 ; 5 ) is arranged axially biased. Shaft system according to one of the preceding claims, characterized in that the ball roller bearing ( 4 ; 5 ) is formed multi-row. Shaft system according to one of the preceding claims, characterized in that the ball roller bearing ( 4 ; 5 ) is formed without a separate inner ring, and that the radially inwardly arranged track for the ball rollers on the radially inner rotatable shaft ( 1 ) is trained. Shaft system according to one of the preceding claims, characterized in that for supporting the drive or output shaft ( 1 ) against the at least one axis ( 3 ) or further shaft at least two ball roller bearings ( 4 . 5 ) are present, which are arranged in an X or O arrangement to each other. Shaft system according to claim 10, characterized in that the ball roller bearings ( 4 . 5 ) a support bearing with respect to the drive or output shaft ( 1 ) form. Shaft system according to claim 10 or 11, characterized in that the hollow axle ( 3 ) or hollow shaft by means of damping elements ( 6 ) ge compared with a radially outer hollow cylindrical axis ( 7 ) is supported. Chucks ( 110 ) for winding heads ( 120 ) of spinning machines with a shaft system ( 100 ) according to one of the preceding claims. Winding head ( 120 ) of a spinning machine with at least one chuck ( 110 ) with a shaft system ( 100 ) according to one of claims 1 to 12. Spinning plant for synthetic fibers with at least one winding head ( 120 ) according to claim 14.