All-Steel Card Clothing

Abstract

A card clothing wire (1) for use on drums in carding machines has a base (2) and a blade (3) formed on the base, the base and blade having a total height of the wire (h1) of 1.5 mm to 5 mm. The blade (3) has teeth (4), wherein each tooth (4) includes a first tooth tip (5) having a tooth depth (h6) of 0.3 mm to 1.0 mm; a tooth pitch (p) of 1.4 mm to 2.5 mm; a back face with a back angle (1) of 50 to 80 angle degrees; and a tooth front face with a working angle (). Each tooth (4) further includes a second tooth tip (6) formed at a tip spacing (a) from the first tooth tip (5), the second tooth tip (6) having a back face with a back angle (2) of 50 to 80 angle degrees.

Claims

1-10. (canceled)

11. A card clothing wire (1) for use on drums in carding machines, comprising: a base (2) and a blade (3) formed on the base, the base and blade comprising a total height of the wire (h.sub.1) of 1.5 mm to 5 mm; the blade (3) comprising teeth (4), each tooth (4) further comprising a first tooth tip (5), the first tooth tip (5) comprising: a tooth depth (h.sub.6) of 0.3 mm to 1.0 mm; a tooth pitch (p) of 1.4 mm to 2.5 mm; a back face with a back angle (1) of 50 to 80 angle degrees; and a tooth front face with a working angle () each tooth (4) further comprising a second tooth tip (6) formed at a tip spacing (a) from the first tooth tip (5), the second tooth tip (6) comprising a back face with a back angle (2) of 50 to 80 angle degrees: and wherein the back angle (1) of the first tooth tip (5) and the back angle (2) of the second tooth tip (6) are the same.

12. The card clothing wire (1) according to claim 11, wherein the tip spacing (a) between the first tooth tip (5) and the second tooth tip (6) amounts to 10% to 50% of the tooth pitch (p).

13. The card clothing wire (1) according to claim 11, wherein a tooth intermediate space (8) is defined between the first tooth tip (5) and the second tooth tip (6) and has a height (z) of 10% to 50% of the tooth depth (h.sub.6).

14. The card clothing wire (1) according to claim 11, wherein the total height of the wire (h.sub.1) at the first tooth tip (5) and at the second tooth tip (6) is the same,

15. The card clothing wire (1) according to claim 11, wherein the back angle (1) of the first tooth tip (5) and the back angle (2) of the second tooth tip (6) is 65 angle degrees.

16. The card clothing wire (1) according to claim 11, wherein the first tooth tip (5) has a blade width (b.sub.3) of 0.04 mm to 0.08 mm.

17. The card clothing wire (1) according to claim 16, wherein the second tooth tip (6) has a blade width (b.sub.3) of the same size as the blade width (b.sub.3) of the first tooth tip (5).

18. The card clothing wire (1) according to claim 11, wherein the working angle () amounts to 30 to 50 angle degrees.

19. A drum on a carding machine, comprising the card clothing wire (1) according to claim 11.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The invention is explained in greater detail below on the basis of exemplary embodiments and is illustrated in greater detail by the drawings.

[0016] FIG. 1 shows a schematic diagram of a view of a specific embodiment of a card clothing wire.

[0017] FIG. 2 shows a schematic diagram of a cross section of the card clothing wire according to FIG. 1.

[0018] FIG. 3 shows a schematic diagram of a view of another specific embodiment of a card clothing wire.

DETAILED DESCRIPTION

[0019] Reference will now be made to 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 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.

[0020] FIG. 1 shows a schematic diagram of one view and FIG. 2 shows a cross section through one specific embodiment of a card clothing wire 1 having a base 2 and a blade 3. The base 2 and the blade 3 extend over the total height h.sub.1. The blade 3 is provided with teeth 4, which are arranged one after the other along the card clothing wire 1 at a certain distance, the so-called tooth pitch p. The teeth 4 are in a regular arrangement and are identical in shape to a tooth pitch p along the card clothing wire 1. The blade 3 on the base 2 tapers from the base 2 to a blade width b.sub.3 on the first or second tooth tip 5. The blade widths at the first and second tooth tips are identical. The base 2 has a base width b.sub.1 on the side opposite the tooth tips 5, 6. The teeth 4 have a tooth depth h.sub.6. The tooth depth h.sub.6 extends from the first tooth tip 5 to the tooth base 7.

[0021] Each tooth 4 has a first tooth tip 5 and a second tooth tip 6 arranged on its back face. The first tooth tip 5 with its front face forms the front side of the tooth 4 here, the so-called front face. The front face is designed to be inclined by the working angle in relation to the perpendicular line to the wire base. From the first tooth tip 6 a back face, which is inclined by a back angle 1 in relation to the perpendicular line to the wire base is arranged. The second tooth tip 6 is formed on this back face. The second tooth tip 6 is arranged at a distance a a from the first tooth tip 5. A tooth intermediate space 8, which is limited on one side by the back face of the first tooth tip and on the other side by a front face of the second tooth tip 6, is provided between the first tooth tip 5 and the second tooth tip 6. The tooth intermediate space 8 has a height z. The back face leads from the second tooth tip 6 with an inclination in relation to the perpendicular line to the wire base (back angle 2) to the tooth base 7.

[0022] In the specific embodiment according to FIG. 1, the back angle 1 and the back angle 2 are identical. In the case when the front angles a of the two tooth tips 5 and 6 are identical, both tooth tips 5, 6 exhibit the same behavior with respect to the fiber transfer.

[0023] FIG. 3 shows a schematic diagram of another specific embodiment of a card clothing wire 1. The embodiment according to FIG. 3 differs from the embodiment according to FIG. 1 in that the back angle 1 of the back face after the first tooth tip 5 is not identical to the back angle 2 after the second tooth tip. For certain fiber materials, it may be advantageous to make the card clothing less aggressive or to facilitate the guidance of the fibers at the surface of the card clothing.

[0024] 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

[0025] 1 Card clothing wire

[0026] 2 Base

[0027] 3 Blade

[0028] 4 Tooth

[0029] 5 First tooth tip

[0030] 6 Second tooth tip

[0031] 7 Base of tooth

[0032] 8 Tooth intermediate space

[0033] Working angle

[0034] 1 Back angle of the first tooth tip

[0035] 2 Back angle of the second tooth tip

[0036] h.sub.1 Total height of the wire

[0037] h.sub.6 Tooth depth

[0038] b.sub.1 Base width

[0039] b.sub.3 Blade width at the tip

[0040] p Tooth pitch

[0041] a Tip spacing

[0042] z Height of tooth intermediate space