JPS6241011Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a bayonet element for a sleeve held on a steel spindle. Such sleeves are used, for example, as bobbins in textile machines.

The object of this invention is to make it possible for the conical and cylindrical sleeve to be non-slidably and non-rotatably connected to the spindle by simple means in constructing the plug-in element. The plug-in element according to this invention consists of a boss with several obliquely arranged elastic pieces. When the elastic piece is inserted into the sleeve, it is compressed and elastically deformed while coming into contact with the inner wall of the sleeve. The plug-in element is especially made of an elastic synthetic material so that it forms a kind of elastic cage. The plug-in element of the invention is used in particular for horizontal spindles or for spindles tilting upwardly or downwardly. However, it goes without saying that the same plug-in element can also be used for vertical spindles.

The invention will be explained in detail below based on some embodiments shown in the accompanying drawings.

The plug element 2 shown in FIG.
The sleeve is used, for example, as a twisting bobbin in textile machines. The insertion element 2 is composed of a boss 3.
The upper part of this boss is formed as a disk 4, and four inclined elastic pieces 5 are provided on the boss.

A centering clamp disc 6 is seated in a known manner on the front end of the steel spindle 1 shown in FIG.
A plug-in element 2 is provided on the spindle 1, the elastic piece 5 of which extends over the sleeve 7 on the spindle 1.
By sliding it in the direction of , it is compressed and comes into contact with the inner wall of the sleeve 7 while being elastically deformed. For this reason, the sleeve 7 is connected to the spindle 1 in a non-rotatable and non-slidable manner. In this case, the centripetal clamping disc 6 also serves as a stop to prevent the sleeve 7 from sliding axially.

FIG. 3 shows a plug-in element for a cylindrical sleeve. On the spindle 1 there are two plug-in elements 2 of identical construction.
and 2A are provided at predetermined intervals in the axial direction.
Additionally, a centering piece 8 is seated on the spindle. The piece consists of a boss with a downwardly flared hollow conical skirt. The centering piece 8 is prevented from sliding in the axial direction by a resilient ring 9 made of steel plate, while forming a stopper for the cylindrical sleeve.

The boss of the front plug element 2 rests on a stop that is fixedly connected to the spindle 1. If the sleeve is short, the lower insert element 2A can be omitted,
It is also possible to position only the upper plug-in element 2 and the centering piece 8 on the spindle.

The plug-in element of FIG. 4 also has a boss and an elastic piece 5 extending obliquely outwards. An outwardly bent protrusion 10 is provided at the end of the elastic piece 5, and the stopper used as a stopper when inserting the sleeve limits the downward sliding of the sleeve in the axial direction. The plug-in element according to FIG. 4 is therefore particularly advantageous for use in cylindrical sleeves. The elastic piece 5 is reinforced by a rib 11, which tapers downward from the disk-shaped upper part of the boss.
It almost ends at the center of the elastic piece 5. The elastic piece has a side wall portion 12 that converges downward. Therefore, the upper end 13 of the elastic piece is wider than the lower end supporting the protrusion 10. Since the plug-in element of this invention has the above-described structure, sleeves of various shapes can be easily and inexpensively mounted on the plug-in element. This means that the sleeve can be attached by simply slipping it over the plug-in element, without the need for expensive operations such as welding, for example. Furthermore, the elasticity of the material of the insert element allows the sleeve to self-center on the insert element, so that the sleeve is precisely centered on the spindle and prevents thread breakage during high speed rotation. Furthermore, the sleeve does not slip on the plug-in element, so that no knots are formed in the thread during winding.

The greatest advantage of the plug-in element according to this invention is that the shape and size of the sleeve are not limited, and sleeves of various shapes and sizes can be attached to the same plug-in element.

[Brief explanation of the drawing]

Figure 1 is a side view and top view of the plug-in element, Figure 2 is a sectional view of a conical sleeve held by a single plug-in element, and Figure 3 is a double-sided connector of a cylindrical sleeve. FIG. 4 is a cross-sectional view of an alternative configuration of the insert element when it is held by an element. The symbols in the diagram are 1...spindle, 2, 2A...
...insertion member, 3...boss, 4...disc, 5...
...Elastic piece, 6, 8... Centering piece, 7... Sleeve, 9... Resilient ring, 10... Projection, 11...
…rib.

Claims (1)

[Scope of utility model registration request] A plug-in element made of elastic synthetic material for a sleeve of a textile machine which can be held on a spindle, the plug-in element having a boss for holding on the spindle and a holding part connected to this boss. The holding portion includes several inner wall portions of the sleeve 7 which have spring elasticity and freely protrude diagonally outward from a disk formed integrally with the boss at one end of the boss 3 and made of the same material as the boss. The elastic parts 5 are inclined with respect to the axis of the boss 3 and integrally connected to each other and to the boss 3 at one end. Plug element made of elastic synthetic material, characterized by: