Device for making seams on three-dimensional objects
First Claim
1. A device for making seams on objects comprising a holding device (10) for holding material (12, 14) to be sewn together, and a manipulator (20) carrying a sewing machine (18) which causes relative movement between the sewing machine (18) and said holding device (10) along an intended seam line by means of a manipulator arm (19) of said manipulator (20), characterized in that said sewing machine (18) includes a sewing head (26) with a needle plate (30) defining an abutment for the material (12, 14), a presser (31) of said sewing machine (18) for pressing the material (12, 14) against said needleplate (30), a needle (29) of said sewing machine head (26) being movable transversely with respect to the material (12, 14), and means for controlling the operation of said sewing head (26) such that said sewing head (26) is at a standstill relative to said holding device (10) during the penetration of said needle (29) into the material (12, 14).
1 Assignment
0 Petitions
Accused Products
Abstract
For making seams on three-dimensional objects, a manipulator (20) is used at the manipulator arm (19) of which a sewing machine (18) is secured. The cuttings (12,14) to be sewn are fixed to a holding device (10), and the sewing machine (18) sews the protruding edge strips (16) which confront each other. The sewing machine (18) can be guided by the manipulator arm (19) along the intended seam line at constant speed. While the needle penetrates the material, the sewing machine being guided on a guide (21) by means of a carriage (22) is driven in a direction opposite to the feeding direction of the manipulator so that the sewing machine is at a temporary standstill with respect to the holding device (10). After completion of the stitch, the carriage (22) is advanced on the guide (21) in feeding direction so that the sewing machine catches up with the lag. With each stitch, the edge strip (16) is clamped between a needle plate and a presser of the sewing machine.
30 Citations
9 Claims
- 1. A device for making seams on objects comprising a holding device (10) for holding material (12, 14) to be sewn together, and a manipulator (20) carrying a sewing machine (18) which causes relative movement between the sewing machine (18) and said holding device (10) along an intended seam line by means of a manipulator arm (19) of said manipulator (20), characterized in that said sewing machine (18) includes a sewing head (26) with a needle plate (30) defining an abutment for the material (12, 14), a presser (31) of said sewing machine (18) for pressing the material (12, 14) against said needleplate (30), a needle (29) of said sewing machine head (26) being movable transversely with respect to the material (12, 14), and means for controlling the operation of said sewing head (26) such that said sewing head (26) is at a standstill relative to said holding device (10) during the penetration of said needle (29) into the material (12, 14).
Specification