Carding machine carrier element with tensioning element

• Main Author: BRITTA JACOBS
• Format: Patent
• Language: English
• Published: 13.06.2012
• Subjects: NATURAL OR ARTIFICIAL THREADS OR FIBRES; PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING; SPINNING; TEXTILES

A flat or roller card comprises is at least one working element and/or functional element, for example a fixed carding element or revolving flat bar with an elongate carrier element 24. A tensioning element 51 associated with the carrier element allows adjustment of the working element to enable the carding nip to be constant. A clamping device 50 is provided with which the position of the tensioning element 51 is fixable with respect to the carrier element 24. The clamping device may be used to pre-tension the working element such that an operational temperature differential causes the working element to bow in a complimentary manner to the associated working cylinder. Alternatively the clamping element may be activated in use by an increasing temperature differential. Preferably a steel rod 51 is located inside an aluminium tube 52 which is in-turn located within a recess of the carrier element with insulation between the tube and carrier element. The clamping device preferably comprises a sleeve nut threaded onto the aluminium tube and has claws with chamfered surfaces such that screwing the nut onto the tube or relative thermal expansion of the tube and carrier element causes the claws to clamp onto the rod 51.