Mechanism for adjustably positioning an embroidering frame
AssigneePfaff Industriemaschinen GmbH
InventorKurt Bolldorf
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Abstract
Stepping mechanisms are used to move an embroidering frame in both the vertical and horizontal directions on a machine frame. Each stepping mechanism includes a hydraulic cylinder-piston rod assembly, a multi-way valve for directing the flow of hydraulic fluid to the assembly, and an electric stepping motor connected to the valve for regulating the flow to the assembly. To effect movement a signal is transmitted to the stepping motor which positions the valve to operate the hydraulic cylinder-piston rod assembly. The piston rod is in direct contact with the frame and its movement provides the desired movement of the embroidering frame. The piston rod is connected to the stepping motor for closing the valve when the desired position of the embroidering frame has been reached.
Claims11
A movable support arrangement for use in an embroidering machine including a movably supported embroidering frame, a hydraulic mechanism for moving said embroidering frame in the vertical and horizontal direction, control means connected to said hydraulic mechanism for controlling the movement of said embroidering frame effected by said hydraulic mechanism in accordance with a signal transmitted to said control means wherein said hydraulic mechanism comprises a stepping means in direct supporting contact with said embroidery frame for moving said embroidery frame into a selected position in accordance with the signal delivered to said control means and for holding said embroidering frame in the selected position.
Dependencies are inferred from the claim text.