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US 5,038,441 AGranted
Combing machine having apparatus for changing lap rolls
AssigneeRieter Machine Works, Ltd.
InventorsGian-Carlo Mondini, Hans-Ulrich Eichenberger
Life of this patent
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AssigneeRieter Machine Works, Ltd.
InventorsGian-Carlo Mondini, Hans-Ulrich Eichenberger
Estimating the term…
Two lap slivers lying one on top of the other are continuously fed to the combing tools in a plurality of combing heads of a combing machine. The first lap sliver comes from a first lap roll carried by a rear carrier device, and runs over a front carrier device. A second lap roll is carried on this, from which the second lap sliver emanates. A detector determines when the end of the lap sliver from the first lap roll is running out in one of the combing heads. A control unit then executes a lap roll change on several combing heads simultaneously as follows: The end of the first lap sliver is severed to the same length in all the combing heads. The cut-off pieces of the lap slivers and the winding tubes of the first lap rolls are removed. The second lap rolls are rolled on to the rear carrier devices. New lap rolls are so placed on the front carrier devices that the start of the lap sliver on these new rolls is aligned with the end of the first lap sliver. In this way, the lap roll change can be executed completely automatically and without stopping the machine.
A combing machine having a plurality of combing heads, each combing head including a rear carrier device for a first lap roll, with at least one first lap roller which can be driven, and a front carrier device for a second lap roll, with at least one second lap roller which can be driven, and each combing head having associated therewith a conveying device for placing lap rolls on said front carrier device, wherein each combing head includes a device for severing a first lap sliver unrolled from said first lap roll and extending to said front carrier device, forming a definite end of said first lap sliver at a predetermined location, and wherein a commonly assigned control unit is provided for at least some of the combing heads for the control of said severing devices and of said conveying devices of said combing heads so that said conveying devices place new lap rolls on said front carrier devices at such a point in time that respective forward ends of lap slivers on said new lap rolls are aligned with respective ones of said lap sliver definite ends formed by said severing devices and extending to said front carrier devices.
Dependencies are inferred from the claim text.