Method and apparatus for forming pocketed springs

Details Method and apparatus for forming pocketed springs Method and apparatus for forming pocketed springs

B - Operations, Transporting

68

G

B68G 7/00 (2006.01) B21D 39/03 (2006.01) B23P 11/02 (2006.01) B23P 19/04 (2006.01) B65B 5/00 (2006.01) B68G 9/00 (2006.01)

Patent

CA 2265871

Method and apparatus for forming strings (170) of springs (16) enclosed within pockets having flat overlapping side seams (172), thereby avoiding problems with false loft in mattress construction. Fabric is first formed into an envelope (33) having overlapping portions (A, B). The overlapping portions are then diverted away from one another to form an opening in the envelope, and springs which are compressed by a compressor (80) are inserted into the envelope through the opening. Following insertion of the springs, the overlapping portions are sealed together, individual pockets are created in the envelope, and the springs are rotated within their respective pockets to form a completed string of springs.

Procédé et dispositif pour former des chaînes (170) de ressorts (16) enfermés dans des poches présentant des coutures latérales plates superposées (172), ce qui permet d'éviter les problèmes de faux gonflant dans la fabrication de matelas. Le tissu est d'abord préparé pour former une enveloppe (33) avec des parties superposées (A, B). Ces parties superposées sont ensuite écartées l'une de l'autre de manière à créer une ouverture dans l'enveloppe, et les ressorts comprimés par un compresseur (80) sont insérés dans l'enveloppe par cette ouverture. Une fois que les ressorts sont insérés, les parties superposées sont scellées l'une à l'autre. Des poches individuelles sont formées dans l'enveloppe et les ressorts sont tournés dans leur poche respective, pour former une chaîne de ressorts complète.

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