Rieter Machine Works, Ltd.

Fredy Wichtermann

Gian-Carlo Mondini

Heinz Clement

Oliver Wuest

Helmuth Langel

A textile machine is provided with apparatus for preparing the trailing end of a lap and a leading end of a fresh lap so that each end has a reduced fiber mass per unit length of lap in the prepared end. These lap ends are thereafter superimposed and joined together for subsequent processing in a combing unit of a combing machine or a drafting unit of a ribbon lap machine. The respective ends of the two laps may be prepared by a tearing action caused by clamping of the respective lap end between two spaced apart nip lines which are moved away from each other and wherein the spacing is slightly more than the length of the longest fiber in the lap. Preparation of a lap end may also be accomplished using a suction head for clamping of a lap along a nip line in order to carry out tearing of the lap to produced a prepared end.

Textile machine

Comber lap joining device with suction head for preparing ends

Method and apparatus for automatic piecing of comber laps

The combing machine has at least one combing head having combing elements and a carrier for a lap roll for combing. Two pairs of transport rollers and a pair of pressing rollers are provided in the path of the lap from the lap roll to the combing elements. A movable deflector or element is also disposed adjacent the pressing rollers for a lap end. An automatic lap change is carried out when the lap has approximately completely unwound from the roll. The transport roller pairs are used to tear the lap therebetween with the resulting lap end advancing to the pressing rollers which is then stopped. After a fresh lap roll is placed in the machine, the forward end of the lap is moved between the transporting rollers and severed to form a second lap end. The deflector element serves to place the end of the fresh lap onto the previous lap end for combining within the pressure rolls.

Combing machine

Growing community of inventors

Effretikon, Switzerland

Fredy Wichtermann