A preparation device prepares a sample of textile fibers, in particular cotton fibers, applicable to analysis and/or measuring apparatuses respectively for analyzing and/or measuring characteristics of the textile fibers forming the sample. The preparation device includes a comb body that can be coupled in a sliding manner along a rectilinear guide that faces a perforated plate against which to press a mass of textile fibers forming protuberances projecting from the holes of the perforated plate. The comb body is arranged to grip tufts of textile fibers from such protuberances. The preparation device also includes at least one brush that is mounted in a sliding manner along a rectilinear guide facing the perforated plate and that is arranged to brush the textile fibers forming the protuberances before the comb body grips the tufts.

The invention relates to a combing machine having a plurality of combing heads (10), wherein each combing head (10) has a nipper assembly (18) with a pivotably mounted upper nipper plate (22) and a rotationally fixed lower nipper plate (20) and each has a combing cylinder (16) which is mounted in a rotationally fixed mount on a common shaft (12). A movement of the upper nipper plate (22) is controlled by a rotational angle position of the combing cylinder (16) by means of a control unit (29). Each combing cylinder (16) is provided on its circumference with a combing segment (38) and detaching segment (46), wherein a rotatably mounted detaching roller (48) can be advanced to the detaching segment (46). According to the invention, at least one combing cylinder (16a) is arranged on the common shaft (12) with an offset (14) relative to the other combing cylinders (16b, 16c) to reduce the mechanical load on the common shaft (12).

The present invention refers to a preparation device (10) for preparing a sample of textile fibers, in particular cotton fibers, applicable to analysis and/or measuring apparatuses respectively for analyzing and/or measuring characteristics of the textile fibers forming said sample, wherein the preparation device (10) comprises a comb body (11) that can be coupled in a sliding manner along a rectilinear guide (12) that faces a perforated plate (13) against which to press a mass (M) of textile fibers forming protuberances projecting from the holes of the perforated plate (13), wherein the comb body (11) is arranged to grip tufts of textile fibers from such protuberances and is characterized in that it comprises at least one brush (14) that is mounted in a sliding manner along a rectilinear guide facing the perforated plate (13) and that is arranged to brush the textile fibers forming the protuberances before the comb body grips said tufts.

The invention relates to a circular comb (1) of a combing machine, comprising a base body (5) which is situated in parallel to its rotation axis (D) and which has at least one comb element (K1-K4) resting on its outer circumference (U), and at least one retaining element (10, 40) which is connected to the comb element and which has at least one threaded bore (18) into which in each case a first end section (E1) of a threaded bolt (6) provided with a thread protrudes, the threaded bolt having a middle section (14) which protrudes through a radially oriented opening (12) in the base body (5), and the threaded bolt (6) being provided with a second end section (E2) with which it is supported on an inner support surface (26) of the base body (5) in the area of the particular opening (12), the cross-sectional area of the second end section (E2) extending, at least partially, beyond the cross-sectional area of the particular opening (12). To avoid warping of the comb clothings during the installation, it is proposed that the diameter (d1) of the first end section (E1) of the particular threaded bolt (6) is smaller than the diameter (d) of the middle section (14), and a spring element (30, 31) is provided between the inner support surface (26) of the base body (5) and the second end section (E2) of the threaded bolt (6).

The invention relates to a circular comb (1) of a combing machine, comprising a base body (5) and at least one comb element (K1-K4) which at least partially rests on the outer circumference (U) of the base body (5), and a retaining element (10), connected to the comb element, via which the comb element is held on the outer circumference of the base body, and at least one bolt-shaped fastening element (6a, 6b, 6c) which braces the retaining element (10) against the base body (5), a second end section (E4) [sic; first end section (E3)] of the particular fastening element protruding at least partially into the retaining element (10a), and an adjoining middle section (14) protruding at least partially into an opening (42) in the base body (5) oriented radially with respect to the circular comb, and a second end section (E4) which adjoins the middle section (14) of the particular fastening element and which is supported on a support surface (26) of the base body (5) in the area of the opening (42), the second end section (E4) extending at least partially beyond the cross-sectional area of the opening (42). For easier and more secure fastening of the comb elements, it is proposed that the middle section (14) of the fastening element (6) bears at least one spring element (30, 31), which with a first end is supported on a support surface (28) of the second end section (E2) of the fastening element (6) facing the middle section (14), and with its second end is supported on the oppositely situated support surface (26) of the base body (5), and the retaining element (10) has a detent point (W) for the first end section (E1) of the fastening element (6), into which the first end section (E1)) of the fastening element (6) is transferable by a longitudinal displacement of the fastening element by overcoming the elastic force of the spring element (30, 31).

A combing machine includes a machine frame, drive unit, gearing mechanism, operating device, and nipper unit pivotably mounted in the machine frame and having a lower nipper plate with a nipper lip and an upper nipper plate. The combing machine also includes a pair of detaching rollers forming a clamping line, wherein a drive arm of the nipper unit is connected to an intermittently-driven nipper shaft in a rotationally-fixed manner. The nipper shaft is driven by means of a coupling element, which is connected to a driven gearing element. An adjusting device connected to the nipper shaft is provided for adjusting a distance between the nipper lip and the clamping line. The gearing mechanism also includes a fixation in a basic position with a mechanical blocking, and a sensor for measuring the distance or a variable proportional to the distance, and a display of the distance on the operating device.

A combing machine includes a machine frame, drive unit, gearing mechanism, operating device, and nipper unit pivotably mounted in the machine frame and having a lower nipper plate with a nipper lip and an upper nipper plate. The combing machine also includes a pair of detaching rollers forming a clamping line, wherein a drive arm of the nipper unit is connected to an intermittently-driven nipper shaft in a rotationally-fixed manner. The nipper shaft is driven by means of a coupling element, which is connected to a driven gearing element. An adjusting device connected to the nipper shaft is provided for adjusting a distance between the nipper lip and the clamping line. The gearing mechanism also includes a fixation in a basic position with a mechanical blocking, and a sensor for measuring the distance or a variable proportional to the distance, and a display of the distance on the operating device.

A combing cylinder for a comber includes a cylinder shaft having threaded bores, and a base directly attached to the cylinder shaft. The base includes threaded bores formed in an inner surface of the base. The combing cylinder includes combing needles supported on an outer circumferential surface of the base and a balance weight directly attached to part of the cylinder shaft that is opposite from the part where the base is attached. The combing cylinder includes balance weight fixing bolts screwed to the threaded bores of the cylinder shaft to secure the balance weight to the cylinder shaft and base fixing bolts extending through the cylinder shaft and screwed to the threaded bores of the base to secure the base to the cylinder shaft. Each base fixing bolt includes a head, and the cylinder shaft includes in it a seat that receives the head.

A combing cylinder of a comber includes a base and comb segments. The base includes mounting slots. Each comb segment includes a needle array and is detachably secured to the base via the associated mounting slot. The sizes of the needle arrays vary from one comb segment to another. The combing cylinder includes a cover. When at least one of the comb segments is detached from the base, the cover is mounted on the base to cover the mounting slot corresponding to the detached comb segment.

A spring element for an upper nipper of a combing machine has a first element with a through opening arranged transversely to a longitudinal axis. A second element has an internal thread for fastening a shaft adapter, and a guide opening with an opening width as well as a passage opening arranged in the longitudinal axis on a side of the guide opening facing away from the internal thread. A compression spring is arranged between the first and second elements. A connecting element is held in the bore of the first element and projects through the passage opening of the second element into the guide opening, the connecting element having a larger diameter than the passage opening on a side thereof opposite the first element. The first element has a tubular lug overlapping the compression spring, and the second element has a sleeve overlapping the compression spring and the lug.