KR100679379B1 - Toothed chothing for textile machine rollers and supporting segments - Google Patents

Abstract

Disclosed is a toothed edging for textile machines such as combing machines, drafting and opening cylinders for open-end devices and similar, comprising a plurality of bars formed by sawtooth stampings which are disposed next to each other in a parallel manner, are slid in a form-fitting manner onto a holding part by means of a recess that is located in the base area thereof, and are fixed in the longitudinal direction of the holding part by means of cheeks of the supporting segment or the cylinder when placed in the operating position. At least some sections of the recesses (7) of the inventive sawtooth stampings (1) and the cross sections of the holding part (6) are embodied in a T-shaped manner and have two peripheries (8, 10) which run approximately parallel to each other at least in some sections thereof.

Description

Toothed chothing for textile machine rollers and supporting segments}

The present invention is a parallel side-side which is securely pushed in by the foot-region recess and which is held in the longitudinal direction of the retaining member by the support segment or the outer side of the roller at the position of use. Tees from combing machines such as open-end devices, including multiple bars of by-side toothed cutouts, and textile machines such as drafting and opening rollers. It relates to toothed clothing.

DE 30 07 245 C2 discloses a tightly-shaped cloth-like edge fabric, which means a piece-shaped piece of cloth that is sawtooth shaped at the edge of the garment. A retaining member of dove-tailed or approximately rectangular cross-sectional shape is provided with a side piece in the form of a segment of a circle.

This kind of fastening is particularly successful in practice, but the side piece surface and the arc result in positioning tolerances of the combing tips. The same applies to the fastening forms known from EP 0 839 934 A1.

Experiments have shown that it is very important to position the tip of the coaming segments accurately and uniformly for optimal coaming results, and the object of the present invention is to improve the shape of the fastening so that these tolerances are significantly reduced.

According to the invention, the object is achieved by having two confinement surfaces, at least partly T-shaped, with at least partly T-shaped recesses and retaining members of the tooth cutout.

The T-shaped structure according to the invention, ie the arrangement structure with two sections parallel to each other, provides a minimum tolerance in the radial direction, which is the direction including the height position of the tip and the radial distance from the axis of rotation. Testing has shown that the tolerance can be reduced by half compared to the conventional embodiment, which improves the coaming result.

The design according to the invention allows the toothed segment to be carried out at low cost in one piece, enables accurate and completely reliable positioning and eliminates the need for additional spring loading.

The details of the invention will become apparent from the description of the preferred embodiments described below, which is made with reference to the drawings, which are schematic illustrations of the toothed edge fabric according to the invention.

1 shows a full tooth cut 1 with a lower part 2 and a number of teeth 3. The additional teeth 3 arranged behind the tooth cut 1 are shown approximately by the connecting rods (not shown) forming the holes 4 and the bars 5 on the right side of the drawing.

 DE 30 07 245 A1 discloses in detail how these tooth cuts 1 or a plurality of bars 5 are mounted in a combing cylinder of a combing machine, in particular specifying the task of the retaining member 6.

Each tooth cutout 1 has a recess 7 so that the bar 5 formed by the tooth cutout 1 or a plurality thereof is pressed against the fastening 8 of the retaining member 6. Can be.

The fastening part 8 of the retaining member 6 has a T-shaped cross section, which means that the fastening part has two confinement surfaces 9, 10, which extend substantially parallel to each other in a substantially tangential direction with respect to the coaming cylinder, and the coaming cylinder. It is meant to include two confinement surfaces 11 extending substantially parallel to one another in a radial direction. The confinement surfaces 9, 10 preferably form an acute angle of less than 20 °, in particular less than 5 °.

Compared with the conventional dovetail structure, this helps to achieve substantially less tolerance in the radial direction (radius R), so that the teeth of the tooth cut 1 are precisely and more evenly arranged to ensure improved coaming results. do.

Claims (3)

Open-end type, comprising a plurality of bars of parallel parallel tooth cuts which are securely pushed into the lower recess and are in use in the longitudinal position of the retaining member by the outer side of the support segment or roller. In combing machines, such as devices, and toothed edge fabrics of textile machines, such as drafting and opening rollers, The recess 7 of the tooth cutout 1 and the cross section of the retaining member 6 are at least partially T-shaped and have two confining surfaces 9, 10 which are partially approximately parallel or acute. Teeth edge cloth to be made. A toothed edge fabric as claimed in claim 1, characterized in that the confinement surface (9, 10) forms an acute angle of less than 20 °. A toothed edge fabric as claimed in claim 1, characterized in that the confinement surface (9, 10) has an acute angle of less than 5 °.

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