Warp-knitting machine with at least one guide bar
AssigneeKarl Mayer Textilmaschinenfabrik GmbH
InventorsHans-Jurgen Hohne, Kresimir Mista
Life of this patent
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Abstract
In a warp-knitting machine with jacquard control, guide needles (1) are fastened to a guide bar (6) by means of carrier strips (3) which are bendable by at least one piezoelectric bending transducer. Each carrier strip (3) consists of electrically insulating material. The strip carries on at least one side, a layering consisting of (a) an inner electrode (8 to 11), (b) a piezoelectrically active layer (15, 17) covering the latter and (c) an outer electrode (16, 18). A control circuit (29) selectively supplies the inner electrode (8 to 11) with control voltage, while the outer electrode (16, 18) is connected to a reference potential. A contact-protected Jacquard control operated piezoelectrically is obtained in this way.
Claims16
A warp knitting machine having a jacquard control comprising:
- at least one guide bar;
- a plurality of guides;
- a plurality of carrier strips each having an electrically insulating material and each being fastened between said guide bar and a corresponding one of said guides;
- a plurality of piezoelectric bending transducers being separately mounted, at least one each, on corresponding ones of said carrier strips, each of said bending transducers having a layering separately mounted on at least one side of said electrically insulating material of said carrier strips, said layering including:
- (a) a first electrode,
- (b) an second electrode adapted to be connected to a reference potential, and
- (c) a piezoelectrically active layer mounted between said first electrode and said second electrode;
- and
- a control circuit for selectively supplying said first electrode with a control voltage for deflecting said layering to offset said guides by the amount of at least one needle spacing.
Dependencies are inferred from the claim text.