Back to results
US 5,228,480 AGranted
Pick finding apparatus for electric motor driven heald frames
AssigneeTsudakoma Kogyo Kabushiki Kaisha
InventorZenji Tamura
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTsudakoma Kogyo Kabushiki Kaisha
InventorZenji Tamura
Estimating the term…
A shedding controlling apparatus for a loom wherein each of a plurality of heald frames is driven by a drive motor for the exclusive use therefor. During steady operation of the loom, when a crank angle is inputted to a position instructing section, the position instructing section produces an aimed amount of rotation, and a position controlling section controls the drive motor to rotate in accordance with the aimed amount of rotation to eliminate a deviation thereof from a crank shaft of the loom to establish a synchronized relationship between them. Then, when an operation instruction signal is generated during stopping of the loom, a movement instructing advice drives the drive motor by a predetermined amount of rotation by way of an OR gate and the position controlling section in accordance with a shedding pattern designated by way of a shedding instructing and shedding pattern instructing so that a leveling operation of the heald frame, a pick finding operation and a starting preparing operation may be performed automatically.
A shedding controlling apparatus for a loom wherein each of a plurality of heald frames is driven by a drive motor for the inclusive use therefor, comprising shedding pattern designating means for storing shedding patterns of the heald frame therein and for specifying and outputting one of the shedding patterns for each operation cycle of said loom, position instructing means for defining an aimed amount of rotation of the drive motor in accordance with the shedding pattern from said shedding pattern designating means and a crank angle of a main shaft of said loom, position controlling means for controlling rotation of the drive motor in accordance with the aimed amount of rotation from said position instructing means, movement instructing means for driving the drive motor to rotate by a predetermined amount upon a stopping condition of said loom, and shedding instructing means for instructing said movement instructing means of a particulate shedding pattern by way of said shedding pattern designating means in response to an operation instruction signal from an external circuit, wherein said movement instructing means determines an amount of rotation of the drive motor in accordance with the shedding pattern designated by said shedding instructing means in response to the operation instruction signal.
Dependencies are inferred from the claim text.