Rieter Machine Works, Ltd.

Maschinenfabrik Rieter Ag

Hansulrich Eichenberger

Heinz Clement

Giancarlo Mondini

Jurg Bischofberger

Walter Ackeret

Paul Scheurer

Titus Schmid

Ludwig Lacher

The combing machine is provided with a plurality of combing devices for delivering a plurality of combed slivers as well as a drafting system for receiving and drafting the combed slivers for delivery to a can press. A measuring device is provided to measure the thickness of the sliver delivered to the drafting system and to deliver a signal to a control unit which, in turn, regulates the drafting of the sliver within the drafting system in accordance with the received signal in order to obtain an evened combed sliver.

Combing machine and process for forming an even combed sliver

The circular comb segment is constructed to leave a large free space at the front edge to avoid deflecting a tuft delivered from a nipper unit away from the foremost needles or clothing points at the front edge. The comb segment may be provided with recesses at the sides of the front edge to receive screws for fixing the segment to a comb roller or may be provided with projecting lugs for securement to a comb roller. In one embodiment, the lugs may be replaced by clamping plates which engage against a reduced lip at the front edge of the segment or engaged within a recess or groove at the front edge. In still another embodiment, the comb segment may be provided with an inwardly offset projection to be received in a recess of the roller and secured therein.

Comb segment for fixing on a comb roller of a combing machine

A transport device serves for the delivery of a plurality of tubes wound with textile material to form laps, between a lap forming machine and a lap processing machine, by means of a transport truck. The transport truck possesses a tiltable receiver in which repose the laps. Viewed in the lengthwise direction of the laps, the latter are arranged behind and coaxially with respect to one another at a predetermined mutual spacing. With prior art devices, a number of manual operations are required to accomplish the exchange of laps and empty tubes. In particular, the empty tubes must be manually removed and intermediately stored at the lap processing machine before they can be manually placed upon the transport truck following mounting of the full laps. The invention thus proposes a transport device which enables automatically transferring the tubes into a receiver trough of the transport truck, and following release of a locking device with concomitant release of the tiltable receiver, the laps can be automatically introduced into a receiver location of a combing machine constituted by the lap processing machine.

Transport device for laps

The combing machine comprises a detaching roll and an oscillating nipper unit comrising bottom and top nippers. The predetermined spacing for the oscillating nipper unit with respect to the detaching roll is adjustable, such predetermined spacing being the spacing between the front edge of a bottom-nipper plate and the nip location at the detaching roll when the oscillating nipper unit is in its front end position. A top comb is held in top-comb holders. Each top-comb holder on a top-comb bed is pivotably adjustable about an axis substantially parallel to the detaching roll, the top-comb bed being secured at the bottom nipper. Subsequent to an adjustment of the predetermined spacing, the top-comb holders are reset such that pins of the top comb are again located at the same predetermined distance from the detaching roll. The position of the axis is selected such that, subsequent to adjusting the predetermined spacing and resetting the top-comb holders, the depth of penetration and the angle of penetration of the top-comb pins are practically the same as they were before. The depth and angle of penetration of the top-comb of the top-comb pins are measured relative to a tangential plane extending to the detaching roll from the lap delivery line at the bottom-nipper plate. Consequently, no separate elevational resetting of the top-comb pins is required subsequent to the adjustment of the predetermined spacing and the resetting of the top-comb holders.

Combing machine

A cleaning arrangement for the pressing rollers of a combing machine which are pressed toward associated detaching rollers includes at least one cleaning roller which is mounted for free rotation in engagement with the respective pressing roller about an axis parallel to that of such pressing roller. The cleaning roller has a smooth outer surface to which fibers will not adhere. During the operation of the combing machine, the pressing rollers conduct controlled intermittent rotary movements, but the cleaning roller does not immediately follow such movements; rather, a certain degree if slippage occurs between the cleaning roller and the respective pressing roller, resulting in stripping off of any fibers which may adhere to the pressing roller. Such detached fibers then fall onto the fibrous web being combed, which passes between the pressing rollers and the associated detaching rollers but, because of the relatively small quantity of such detached fibers, the quality of the web does not suffer to any appreciable extent.

Growing community of inventors

Winterthur, Switzerland

Hansulrich Eichenberger