Selecting and comprehensively actuating mechanism for rotary type dobby opening device

Abstract

The invention relates to a selecting and comprehensively actuating mechanism for a rotary type dobby opening device and belongs to the field of textile machinery. The selecting and comprehensively actuating mechanism provided by the invention comprises a spindle, a swing arm and an eccentric disc, a spline disc, a clutch claw, a first signal swing arm and a second signal swing arm and a magnet absorption swing arm, and the selecting and comprehensively actuating mechanism is characterized in that a first inclined plane and a second inclined plane are formed on the two sides of an opening of a first eccentric disc meshing cavity; a third inclined plane and a fourth inclined plane are formed on the two sides of the opening of a second eccentric disc meshing cavity; a fifth inclined plane and a sixth inclined plane are formed on the two sides of a first swing arm meshing part, and the surface on one side of the first swing arm meshing part forms a first milling plane, a first transition arc surface is formed between the first milling plane and the fifth inclined plane, and a second transition arc surface is formed between the first milling plane and the sixth inclined plane; and a seventh inclined plane and an eighth inclined plane are formed on the two sides of the second swing arm meshing part, and the surface on one side of the second swing arm meshing part forms a second milling plane, a third transition arc surface is formed between the second milling plane and the seventh inclined plane, and a fourth transition arc surface is formed between the second milling plane and the eighth inclined plane. The selecting and comprehensively actuating mechanism provided by the invention has the advantages that locking is reliable and energy consumption is saved.

Description

technical field [0001] The invention belongs to the technical field of textile machinery, and in particular relates to a selection actuator of a rotary multi-arm shedding device. Background technique [0002] The dobby device 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 heddle up and down. Dobby and Positive Dobby. [0003] With the widespread use of shuttleless looms, especially the continuous increase in the speed of looms, the passive dobby device not only consumes a lot of kinetic energy due to the impact of motion inertia, but also makes it difficult to ensure the smooth and high-speed movement of the loom, such as the inertia impact of reciprocating motion The force will cause severe vibration of the loom, and the positive dobby shedding device can overcome this deficiency of the negative dobby device. Therefore, the positive dobby shedding device is th...

AI Technical Summary

Problems solved by technology

However, the above-mentioned patent has the disadvantage that the meshing time point is too early. If the meshing time point is too early, it will increase the inertial kinetic energy when the eccentric disc is separated from the main shaft (keyboard). For this, although it can be offset by increasing the force of the return spring , but increasing the spring force of the return spring will increase energy consumption, which is not conducive to energy saving

On the other hand, during the period from the beginning of contact with the meshing surface of the eccentric disk between the meshing part of the swing arm of the signal swing arm and the meshing surface of the eccentric disk, that is, during the meshing process, the aforementioned force angle changes greatly, which affects the reset to a certain extent. The maximum utilization of the spring force effect of the spring

On the other hand, because the structure of the meshing part of the swing arm of the signal swing arm and the meshing surface of the eccentric disk on the eccentric disk is unreasonable, the holding torque of the signal swing arm to the eccentric disk in a static state is relatively large, thereby increasing The energy consumption of the rotary dobby opening device

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