Apparatus on a carding machine for cotton, synthetic fibres and the like, in which at least one flat bar with a flat clothing is present

Abstract

In an apparatus on a carding machine for cotton, synthetic fibres and the like, in which at least one flat bar with a flat clothing is present, in which a clothing strip having a flat clothing, preferably wire hooks, arranged in a strip-form support element, is secured to a support body of the flat bar and lies opposite the clothing of a roller, e.g. the cylinder, the spacing between a surface defined by the tips of the flat clothing and the tip circle of the cylinder clothing decreases in the direction of rotation of the cylinder. In order to be able to alter and adapt the angle (offset) in a simple manner in terms of mechanical engineering, the top face, of the clothing strip and the tip surface of the flat clothing are not aligned parallel with one another.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is schematic side view of a carding machine in which there may be used an apparatus according to the invention;

FIG. 2 is a side view of a portion of a revolving card flat assembly including card flats according to a first embodiment of the invention and a fragment from the first slideway of a two-sided slideway;

FIG. 3 a shows three flat bars, the spacing between the tip plane of the flat clothings and the cylinder clothing decreasing in the direction of rotation of the cylinder;

FIG. 3 b shows a flat bar according to FIG. 3a, wherein the top face of the clothing strip and the tip plane of the flat clothing are not aligned parallel to one another, with an illustration of the angle α between flat surface and tip plane and of the angle β for the offset;

FIG. 4 shows the flat bar of FIGS. 3 and 3a, comprising flat support body and clothing strips, in an exploded view;

FIGS. 5 a, 5 b show two further embodiments, in which the clothing support part is of wedge-shaped construction in cross-section; and

FIG. 6 shows yet another embodiment in which the clothing support part is of wedge-shaped construction in cross-section.

Claims

1. A card flat for use on a carding machine, comprising a support body and a clothing strip, the clothing strip comprising clothing arranged in a Clothing carrier layer with the clothing having tips which define a notional surface, wherein the clothing strip comprises an upper surface and said upper surface and the notional tip surface defined by the clothing tips are oriented in non-parallel relationship.

2. A card flat according to claim 1; wherein the tip surface is substantially planar and the upper surface of the clothing strip and the tip surface of the flat clothing are arranged at an angle to one another.

3. A card flat according to claim 1, in which the clothing strip is of substantially wedge-shaped construction.

4. A card flat according to claim 3, in which the clothing strip consists of at least two layers, at least one layer being of substantially wedge-shaped construction.

5. A card flat according to claim 1, in which the clothing strip further comprises an upper layer, said upper layer including said upper surface.

6. A card flat according to claim 5, in which an intermediate layer is present between the clothing carrier layer and the upper layer, and at least one of said upper layer, intermediate layer and clothing carrier layer is of substantially wedge-shaped construction.

7. A card flat according to claim 6, in which the upper surface of the clothing strip and a bottom face of the support body are reversibly and detachably joined to one another by means of at least one magnetic element.

8. A card flat according to claim 1, in which the clothing strip and/or the clothing carrier layer is exchangeable.

9. A card flat according to claim 1, in which the clothing has a curved tip surface.

10. A card flat according to claim 1, in which the non-parallel alignment extends partially over the width of the clothing strip.

11. A card flat according to claim 1, in which the clothing set into the carrier layer consists of wires, which are bent approximately in a U-shape and are inserted so that the cross-member of the U-shaped wires or the like runs on the rear side of the carrier layer.

12. A card flat according to claim 1, in which the clothing strip is received in a recess in the bottom face of the support body, the recess being defined by at least two lateral webs or similar on the longitudinal sides of the base of the support body.

13. A card flat according to claim 1, in which the clothing strip further comprises a sheet metal plate and a compensating layer of adhesive, the sheet metal plate being so positioned that it can be brought into connection with a magnet of the support body.

14. A card flat according to claim 13, in which the sheet metal plate is a body of magnetic material arranged on the rear side of the flat clothing strip and extending in the longitudinal direction of the flat bar.

15. A card flat according to claim 1, in which the flat support body is an extruded, hollow profile of a light metal.

16. A card flat according to claim 1, in which the support body consists of fibre-reinforced plastics material, in which a magnetic element is integrated for effecting magnetic connection of the clothing strip to the support body.

17. A card flat according to claim 1, in which the flat clothing has regions with different clothing parameters, in which each said region has clothing tips that are used to form a fibre zone, the zones each forming a respective tip surface.

18. A card flat according to claim 1, which is adapted for use as a part of a revolving flat.

19. A card flat according to claim 1, which is adapted for use as a stationary carding element.

20. An apparatus on a flat card for cotton, synthetic fibres and the like, in which at least one flat bar with a flat clothing is present, in which a clothing element having a flat clothing, preferably wire hooks, arranged in a strip-form support element, is secured to a support body of the flat bar and lies opposite the clothing of a roller, e.g. the cylinder, the spacing between the tip surface of the flat clothing and the tip circle of the cylinder clothing decreases in the direction of rotation of the cylinder, and the tip surface of the flat clothing and a notional surface—arranged parallel to the tangent to the tip circle of the cylinder clothing at the narrowest point—are arranged at an angle to one another, wherein the top face of the clothing strip and the tip surface of the flat clothing are not aligned parallel with one another.