Lamellar weft thread brake mechanism with a variable braking force
AssigneeLindauer Dornier Gesellschaft mbH
InventorRainer Schuster
Life of this patent
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Abstract
In a weft thread brake mechanism with a controllable braking effect, a controllable braking force is applied to a weft thread as it passes between two lamellar braking members, such as leaf spring members. A servomotor, preferably a stepper motor, rotatingly drives an eccentric brake effect control member that cooperates with at least one of the lamellar brake members. Through the eccentric rotation of the braking effect control member, it presses to a varying degree against at least one of the lamellar braking members. Thus, a varying braking force is applied by the lamellar braking members to the weft thread. A programmable computer control provides control signals for the stepper motor.
Claims14
A weft thread brake mechanism for applying a controllable braking effect to a weft thread in a loom, comprising a first lamellar brake member, a brake counter member arranged to cooperate with said first lamellar brake member with the weft thread passing between said first lamellar brake member and said brake counter member, a stepper motor having a shaft, an eccentric brake control member mounted on said shaft and operatively contacting said first lamellar brake member, and a programmable brake control connected to said stepper motor for control signal transmission to said stepper motor, whereby through an eccentric rotation of said brake control member a varying brake force is applied to the weft thread by said first lamellar brake member.
Dependencies are inferred from the claim text.