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US 4,813,362 AGranted
Automatic sewing machine
AssigneeKochs Adler AG
InventorsSiegfried Vogt, Egon Upmeier, Wolfram Schulze
Life of this patent
Estimating the term…
Abstract
An automatic sewing machine has two feeding devices, each having a workpiece holder, each of which, when in a sewing position, can be raised up into a position some distance above a carrier plate and, at this distance above the carrier plate, can be moved over the other workpiece holder situated on the carrier plate to a transfer position. The purpose of these measures is to minimize the cycle time with the lowest possible expense and to increase the output of the automatic sewing machine as much as possible while largely avoiding idling paths.
Claims9
An automatic sewing machine comprising
- a sewing head (2) which has an upper arm (20) and a needle (31) which is movable up and down relative to the upper arm;
- a feeding device (39) for workpieces (37, 38) which are superposed on one another and are to be sewn together;
- a workpiece holder (52) which is a part of the feeding device (39);
- a carrier plate (32);
- a sewing position (59) at the sewing head (2);
- a transfer position (58) apart from the sewing head (2);
- means to convey the workpiece holder (52) holding workpieces (37, 38) on the carrier plate (32) from the transfer position (58) to the sewing position (59);
- a sewing plane (x-y-plane) being arranged perpendicular to the needle (31);
- and
- means for moving the sewing head (2) and the workpiece holder (52) in the sewing position (59) relative to one another in the sewing plane which movement corresponds to a preset path of a seam (60) to be sewn;
- wherein there are provided
- a total of two feeding devices (39, 40) each having a workpiece holder (52, 53),
- means for lifting each workpiece holder (52, 53) from the sewing position (59) upwardly into a position some distance (a) above the carrier plate (32), and
- means for moving each workpiece holder (52, 53) from said position above the carrier plate (32) to the transfer position (58) whereby this one of the two workpiece holders is moved over the other one of the two workpiece holders being on the carrier plate (32).
11 more elements
Dependencies are inferred from the claim text.