CN1071385C - Circular comb sheet fastened on circular comb roller of comber - Google Patents

Abstract

The circular comb piece comprises a base body (1) and a combing card clothing (3) fixed on the base body (1). The card clothing tip of the combing card clothing (3) is inclined towards the front end of the basic body (1), and its free end lies on a cylindrical surface (Z). It also has means to at least partially cover the height (h) of the foremost clothing tip. For example, the device is a guide rail (7) arranged at the front end (V) of the base body (1), which has a distance (a) from the cylindrical surface (Z), which is smaller than the tip of the card clothing (3) radial height (h). The lead-in guide (7) brings the foremost clothing tip (3) into only partial contact with the fiber tufts combed by the circular combs. These foremost clothing tips (3) are therefore no longer subject to particularly severe wear, and the service life of the circular combs is increased.

Description

Circular comb fastened to comber rollers

The invention relates to a circular comb sheet fastened on a circular comb roller of a combing machine, which has a base body and a combing card clothing with a needle point fixed on the base body, and the free end of the needle point is located on a cylindrical surface and faces the base body. The front end is inclined.

Such circular combs are fastened in a comber to a continuously rotating circular comb roll for combing the fiber tufts that are contacted by the nippers on the circular combs. In particular, the tip of the card clothing, which always enters the fiber tufts first, near the front end of the base body, is subject to a certain amount of wear. This wear will gradually lead to changes in the combing process and eventually the circular combs must be replaced.

The object of the invention is to increase the service life of the aforementioned circular combs.

The circular comb sheet of the present invention that is used to achieve this object is characterized in that a device is used to at least partially cover the height of the foremost card clothing tip, so that the foremost card clothing tip is not fully Touch the whiskers.

Since the foremost clothing tip does not completely contact the fiber tufts, there is correspondingly less wear.

Preferably the device is a guide rail arranged at the front end of the base body of the circular comb at a distance from said cylindrical surface. This distance is less than or equal to the height of the tip of the clothing close to the front. With the aid of this insertion guide, the tip of the card clothing close to the front end of the basic body always contacts a small part of the fiber tuft during operation and thus wears correspondingly less.

The lead-in guide rail itself also suffers some wear of course, but this wear hardly produces a change in the combing process. The lead-in rail can be replaced as a relatively inexpensive component if it is preferably fastened replaceably to the base body.

The introduction rail can be fixed on the base plate in an adjustable manner to adjust the distance of the introduction rail from the above-mentioned cylindrical surface, so as to adjust the degree of penetration of the fiber tufts into the tip of the card clothing close to the front end of the matrix, e.g. to accommodate the weight of the batt to be combed And adjust.

Embodiments of the present invention are described in detail as follows according to the accompanying drawings, wherein:

Fig. 1 shows a schematic longitudinal section of a circular comb sheet fixed on a circular comb roller of a comber.

FIG. 2 shows an enlarged view of a segment of the front end of the circular comb piece of FIG. 1 .

Figures 3, 4, 5 and 6 each represent a variant of the part shown in Figure 2,

FIG. 7 shows a partial view from the right side of FIG. 6 .

FIG. 1 shows a circular comb sheet with a base body 1, which is fastened to a circular comb roller 2 of a comber by means of fastening screws not shown in the figure. The circular comb roll 2 rotates continuously around its axis in the clockwise direction in FIG. 1 when the comber is in operation. Four pieces of combing card clothings 3, 4, 5 and 6 are installed one after the other on the outer circumference of the cylindrical sector of the base body 1, and the needle points of the combing card clothing are facing the front end V of the base body 1 relative to the radial direction. inclined, and the free end of the needle tip is located on a cylindrical surface Z.

Next to the front end V of the basic body 1 is provided an insertion guide 7 which extends as far as the cylindrical surface Z. FIG. The distance a ( FIG. 2 ) between the introduction guide rail 7 and the cylindrical surface Z is smaller than the radial height h of the needle tip of the foremost combing clothing 3 near the front end V. The distance a is approximately between 5% and 25% of the height h, and the appropriate value is 0.3-0.5mm. Seen in the direction of movement of the clothing tips, the guide rail 7 then covers a substantial part of the height h of the foremost clothing tip. Therefore, only a part of the fibrous tuft F (Fig. 1) to be combed on the rotating circular comb piece contacted by the nipper 8 is contacted by the foremost needle points of the combing card clothing 3, so that these foremost needles The cloth tip wears very little.

The guide rail 7 is fastened to the base body 1 in a replaceable manner by means of bolts 9 . The bolt 9 passes through a long hole 10 on the guide rail, so after the bolt 9 is loosened, it can be adjusted in the direction of the double arrow P to change the distance a from the cylindrical surface Z.

In order to keep the wear of the guide rail 7 to a minimum, it is preferably hardened or provided with a friction-resistant coating, which can also be made of hard metal.

In the variant according to FIG. 3 , the insertion rail 11 is fastened exchangeably to the front end section of the basic body 1 by means of screws 12 . The insertion rail 11 is not adjustable on the base body 1 . With regard to the distance between the insertion rail 11 and the cylindrical surface Z, the statements made in FIGS. 1 and 2 are still valid. Likewise, the lead-in rail 11 is preferably hardened or coated or made of hard metal.

In the variant according to FIG. 4 , the guide rail 13 is formed as a hardened or coated or hard metal cylinder, which is fastened to the front end section of the base body 1 , for example by gluing.

In the variant according to FIG. 5, the guide rail 14 is formed by a projection machined on the front end section of the base body 1.1 and integrally formed with the base body 1.1, which is preferably coated with a friction-resistant coating. Here, as described above, the distance a between the guide rail 14 and the cylindrical surface Z is also smaller than the radial height h of the needle tip of the foremost combing clothing 3 .

According to the variants of FIGS. 6 and 7 , no insertion guide is provided upstream of the foremost clothing tip. In this way, the height of the foremost clothing tips is partially covered, ie the space A ( FIG. 7 ) between these clothing tips is partially filled with a material M . The fiber tufts into which the clothing tips enter are therefore only partially contacted by the foremost clothing tips. Simultaneously the impact surface to the fiber whiskers increases. Lateral shrinkage of the foremost clothing tip in the bottom region due to wear can be prevented by the filler material M. The filling material can be suitably thinned in such a manner as to be inclined backward toward the outer peripheral surface of the base body 1 as shown in the figure.

Claims (10)

1. Circular comb sheet to be fastened to the circular comb roller of a combing machine, which has a base body (1; 1.1) and combing wires (3, 4, 5, 6) fastened to the base body with wire tips , the free end of the tip lies on a cylindrical surface (Z) and is inclined towards the front end (V) of the base body (1; 1.1), characterized in that it has a height (h) at least partially covering the tip of the foremost clothing The device (7; 11; 13; 14; M) so that the front tip of the card clothing does not completely contact the fiber whiskers when entering the fiber whiskers. 2. Circular comb piece according to claim 1, characterized in that: said device (7; 11; 13; 14) is a guide rail (7; 11; 13; 14) which has a distance (a) from said cylindrical surface (Z) which is less than or equal to the height (h) of the tip (3) of the clothing near the front end (V). 3. Circular comb piece according to claim 2, characterized in that said distance (a) is equal to 5-25% of the height of the clothing tip (3). 4. Circular comb piece according to claim 2 or 3, characterized in that said distance (a) is equal to 0.3-0.5 mm. 5. Circular comb piece according to claim 2, characterized in that the guide rail (7; 11) is fastened exchangeably to the base body (1). 6. Circular comb piece according to claim 5, characterized in that the guide rail (7) is fixed on the base body (1) in an adjustable manner. 7. Circular comb piece according to claim 2, characterized in that the guide rail (13) is a cylinder. 8. Circular comb piece according to claim 2, characterized in that the guide rails (7; 11) are hardened or coated. 9. Circular comb piece according to claim 2, characterized in that the guide rail (7; 11) is made of hard metal. 10. Circular comb piece according to claim 2, characterized in that the guide rail (14) is made in one piece with the base body (1.1).

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