Rotary type multi-arm shedding mechanism

Abstract

The invention discloses a rotary type multi-arm shedding mechanism, belonging to the technical field of textile machinery. The rotary type multi-arm-shedding mechanism comprises a main shaft, swing arms, eccentric discs, a spline disc, clutch claws arranged on the eccentric discs, a first signal swing arm, a second swing arm and an iron-absorbing swing arm, wherein one end of the first signal swing arm is composed of a first swing arm meshing face, and the other end of the first signal swing arm is composed of a first iron-absorbing swing arm contact pin; one end of the second signal swing arm is composed of a second swing arm meshing face, and the other end of the second signal swing arm is composed of a second iron-absorbing contact pin; and the iron-absorbing swing arm is arranged on an iron-absorbing swing arm shaft. The rotary type multi-arm-shedding mechanism is characterized in that the meshing face of the firs eccentric disc and the second eccentric disc are of the shape of a semi-circular-arc concave face, the meshing face of the first swing arm and the meshing face of the second swing arm are of the shape of a semi-circular-arc concave face, the radius of the semi-circular-arc concave face is identical to that of the semi-circular-arc concave face, in addition, a first distance from the meshing face of the first eccentric disc to the rotation axis of a main shaft is identical to a second distance from the meshing face of the second eccentric disc to the rotation axis of the main shaft. The rotary type multi-arm-shedding mechanism has the advantages of contributing to guaranteeing a shedding action effect and saving energy and ensuring the quality of textiles.

Description

technical field

[0001] The invention belongs to the technical field of textile machinery, in particular to a rotary multi-arm opening mechanism . Background technique

[0002] The dobby mechanism is one of the opening parts of the loom that converts the pattern signal of the fabric into the opening action and drives the heald frame of the loom to lift the heald up and down. Arm mechanism and active dobby mechanism.

[0003] The so-called passive dobby mechanism, its main components such as the broach, push knife and pull hook are shown as reciprocating motion, and the heald is returned in the form of a spring. However, with the widespread use of shuttleless looms, especially the continuous increase in the speed of looms, the negative dobby mechanism not only consumes a lot of kinetic energy due to the impact of motion inertia, but also cannot guarantee the smooth and high-speed movement of the loom, such as reciprocating motion. Inertial impact forces can cause severe...

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