Sewing machine and method for operating the sewing machine

Patent metadata

Field	Value
Publication number	US-10876235-B2
Application number	US-201716333690-A
Country	US
Kind code	B2
Filing date	Sep 14, 2017
Priority date	Sep 16, 2016
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A sewing machine includes a support surface for two plies of material to be sewn together and a sewing mechanism that is attached to the support surface and is in operative connection with a machine controller, wherein a plate element positioned between the two material plies is arranged in the material feed area thereof. A vertical adjustment device for the plate element that is actuatable by the machine controller adjusts a vertical distance between the support surface and the plate element, and thus also influences the feed of material to the sewing mechanism. The vertical adjustment device is equipped with an electromagnet for adjusting the position of the plate element. The plate element is equipped with a magnet, which cooperates with the electromagnet.

First claim

The invention claimed is:

1. A sewing machine comprising a support surface ( 1 ) for two plies of material to be sewn together and a sewing mechanism ( 3 ) that is attached to the support surface ( 1 ) and is in operative connection with a machine controller ( 2 ), wherein a plate element ( 4 ) positioned between the two material plies is arranged in the material feed area thereof, wherein a vertical adjustment device ( 5 ) for the plate element ( 4 ) that is actuatable by the machine controller ( 2 ) is provided to adjust a vertical distance between the support surface ( 1 ) and the plate element ( 4 ), and thus also to influence the feed of material to the sewing mechanism ( 3 ), wherein the vertical adjustment device ( 5 ) is equipped with an electromagnet ( 6 ) for adjusting the position of the plate element ( 4 ),
wherein
the plate element ( 4 ) is equipped with a magnet ( 8 ), which cooperates with the electromagnet ( 6 ).

2. The sewing machine according to claim 1 ,
wherein
the vertical adjustment device ( 5 ) is also equipped with a permanent magnet ( 7 ).

3. The sewing machine according to claim 1 ,
wherein
the magnet ( 8 ) is designed as a permanent magnet.

4. The sewing machine according to claim 1 ,
wherein
the vertical adjustment device ( 5 ) forms a part of the support surface ( 1 ).

5. The sewing machine according to claim 1 ,
wherein
the plate element ( 4 ) is arranged between the support surface ( 1 ) and the abutment ( 9 ).

6. The sewing machine according to claim 1 ,
wherein
the vertical adjustment device ( 5 ) is designed to be able to adjust the vertical distance between the support surface ( 1 ) and two different areas ( 4 . 1 , 4 . 2 ) of the plate element ( 4 ).

7. The sewing machine according to claim 6 ,
wherein
the two areas ( 4 . 1 , 4 . 2 ) of the plate element ( 4 ) are arranged on either side of a notional line extending parallel to the material feed direction and ending at a needle of sewing mechanism ( 3 ).

8. The sewing machine according to claim 1 ,
wherein
the plate element ( 4 ) has an area ( 4 . 3 ) that is untouched by the material plies while they are being sewn together, and at this point the plate element is attached to support surface ( 1 ) via a retaining element ( 10 ) preferably constructed as a vertical guide.

9. A method for operating the sewing machine according to claim 1 , wherein
the vertical distance between the support surface ( 1 ) and the plate element ( 4 ) is reduced to slow the lower material ply and increased to slow the upper material ply.

Assignees

• Vetron Typical Europe Gmbh
• Faurecia Sieges Dautomobile

Inventors

• Dinges Michael

Classifications

• D05B27/00

  Work-feeding means · CPC title

• D05B35/00

  Work-feeding or -handling elements not otherwise provided for · CPC title

• D05B21/00

  Sewing machines with devices for automatically controlling movement of work-carrier relative to stitch-forming mechanism in order to obtain particular configuration of seam, e.g. program-controlled for sewing collars or for attaching pockets · CPC title

• D05B35/10 Primary

  Edge guides · CPC title

• D05B27/06 Primary

  arranged above and below the workpieces · CPC title