Metallic card clothing

Abstract

A card clothing wire (1) for use on drums in cards has a root (2) and a blade (3) having an overall height of the wire (h.sub.1) of 1.5 mm to 5 mm. The blade (3) is provided with teeth (4) having a tooth depth (h.sub.6) of 0.35 mm to 1.0 mm, and having a tooth pitch (p) of 1.5 mm to 3 mm. The teeth (4) have a tip surface (7), a back surface (8) having a back angle (), and a tooth face surface. The back angle () is 40 to 20 and each tooth (4) has a first tip (5) and a second tip (6) and the tip surface (7) has at least one elevation (9).

Claims

1. A card clothing wire for use on drums in cards, comprising: a root; a blade comprising a blade base; the root and blade having an overall height of the wire of 1.5 mm to 5 mm; teeth provided on the blade and having a tooth depth of 0.35 mm to 1.0 mm, and having a tooth pitch of 1.5 mm to 3 mm; the teeth comprising a tip surface, a back surface having a back angle from 40 to 20, and a tooth face surface; each tooth comprising a first tip and a second tip; the tip surface comprising at least one elevation; the first tip formed in the tooth face surface; and wherein the first tip is connected to the tooth base via a first concave surface segment having a tooth base radius of 0.1 mm to 0.5 mm.

2. The card clothing wire according to claim 1, wherein the first tip is connected to the second tip via a second concave surface segment having a radius of 0.05 mm to 0.3 mm.

3. The card clothing wire according to claim 1, wherein the tip surface is defined between the second tip and the back surface and comprises a first tip surface segment, a second tip surface segment, and a third tip surface segment.

4. The card clothing wire according to claim 3, wherein the first tip surface segment is formed as a planar surface.

5. The card clothing wire according to claim 3, wherein the second tip surface segment has a tip surface radius of 0.2 mm to 0.5 mm.

6. The card clothing wire according to claim 1, wherein the second tip has a height difference with respect to the elevation in the tip surface of 0.02 mm to 0.5 mm.

7. The card clothing wire according to claim 1, wherein the card clothing wire has a blade width at the second tip of 0.05 mm to 0.3 mm.

8. The card clothing wire according to claim 1, wherein the card clothing wire has a root width of 0.3 mm to 1.0 mm.

9. The card clothing wire according to claim 1, wherein the elevation has a radius of 0.1 mm to 0.3 mm.

10. A drum for a card machine, comprising the card clothing wire according to claim 1 mounted thereon.

Description

BRIEF DESCRIPTION OF THE INVENTION

(1) The invention shall be described in greater detail in the following by means of an exemplary embodiment and by reference to drawings.

(2) FIG. 1 shows a schematic illustration of a view of an embodiment of a card clothing wire,

(3) FIG. 2 shows a schematic illustration of a cross-section of the card clothing wire according to FIG. 1, and

(4) FIG. 3 shows an enlarged schematic illustration of a single tooth of the card clothing wire according to FIG. 1.

DETAILED DESCRIPTION

(5) Reference will now be made to the embodiments of the invention, one or more examples of which are shown in the drawings. Each embodiment is provided by way of explanation of the invention, and not as a limitation of the invention. For example features illustrated or described as part of the one embodiment can be combined with another embodiment to yield still another embodiment. It is intended that the present invention include these and other modifications and variations to the embodiments described herein.

(6) FIG. 1 shows a schematic illustration of a view and FIG. 2 shows a cross-section of an embodiment of a card clothing wire 1 having a root 2 and a blade 3. The root 2 and the blade 3 extend extend along the overall height h.sub.1 of 2.0 mm. The blade 3 is provided with teeth 4 which are sequentially disposed along the card clothing wire 1 with a certain spacing, the so-called tooth pitch p. The teeth 4 are disposed regularly and identically in terms of their shape along the card clothing wire 1 with a tooth pitch p of 15 tips per inch. The blade 3 formed on the root 2 tapers starting at the root 2 up to a blade width b.sub.3 of 0.06 mm at the second tip 6. The root 2 has a root width b.sub.1 of 0.5 mm on the side opposite the second tip. The teeth 4 have a tooth depth h.sub.6 of 0.45 mm and end, on the side opposite the root 2, in a second tip 6. The tooth depth h.sub.6 extends from the second tooth tip 6 to the tooth base 10.

(7) Each tooth 4 has a first tip 5 and a second tip 6. In this connection, the first tip 5 forms the front side of the tooth 4, the so-called face surface. A tip surface 7 is formed from the second tip 6 to the tooth base 10, wherein the tip surface 7 includes an elevation 9 having a subsequent back surface 8. The back surface 8 extends at a back angle of 23 at a slant with respect to the tooth base 10.

(8) FIG. 3 shows an enlarged schematic illustration of a single tooth 4 of the card clothing wire 1 according to FIG. 1. From the tooth base 10 to the second tip 6, the face surface of the tooth 4 is shown, wherein this is formed to the first tip 5. The tooth base 10 is connected to the first tip 5 via a first concave surface segment which has a tooth base radius G of 0.15 mm. The first tip 5 is connected to the second tip 6 via a second concave surface element which has a radius H of 0.1 mm.

(9) The second tip 6, in turn, is connected to the subsequent tooth base by means of a tip surface 7 and a subsequent back surface 8. The tip surface 7 is composed of multiple tip surface segments 11, 12, 9. The first tip surface segment 11, proceeding from the second tip, is formed by a planar surface. The second tip surface segment 12 following the first tip surface segment 11 is designed as a convex surface having a radius D of 0.3 mm. The third tip surface segment is formed by the elevation 9. The elevation 9 has a radius E of 0.15 mm and, at its highest point, has a height difference C of 0.08 mm with respect to the second tip 6.

(10) Modifications and variations can be made to the embodiments illustrated or described herein without departing from the scope and spirit of the invention as set forth in the appended claims.

LEGEND

(11) 1 card clothing wire 2 root 3 blade 4 tooth 5 first tip of a tooth 6 second tip of a tooth 7 tip surface 8 back surface 9 elevation 10 tooth base 11 first tip surface segment 12 second tip surface segment back angle h.sub.1 overall height of the wire h.sub.6 tooth depth C height difference D tip surface radius E radius of the elevation p tooth pitch G tooth base radius to the first tip H radius from the first to the second tip b.sub.1 root width b.sub.3 blade width at the tip