Device and method for opening the edge of a tubular knitted article or similar
OwnerAntonio Magniinventor
Life of this patent
Estimating the term…
Abstract
The device comprises: a tubular member (5A; 5B) in which the articles are inserted; a plurality of mobile gripping members (49) mobile between a first closed position and a second open position, arranged on one outlet end of said tubular member; and guiding and orienting means (71, 73) associated to said outlet end of said tubular member, for guiding and orienting the tubular article inserted in said tubular member towards said gripping members.
Claims41
A device for opening an end of a flexible tubular article, specifically a tubular knitted article including a tubular member (5A;
- 58) in which the articles (M) are inserted;
- a plurality of gripping members (45A;
- 45B) mobile between a first closed position and a second open position, arranged on one outlet end of said tubular member;
- and guiding and orienting means associated to said outlet end of said tubular member, for guiding and orienting the tubular article inserted in said tubular member towards said gripping members, characterized in that:
- said guiding and orienting means comprise two counterpoised contoured bodies (71, 73) which extend from said outlet end of the tubular member towards the inside of the tubular member, said counterpoised contoured bodies reciprocally delimiting a passage for said article and presenting a slanted guiding and orienting surface (X71, X73) facing the direction of provenience of said article, the slanted surfaces of the two contoured bodies having opposite slants;
- and that each of said slanted surfaces present a portion which is essentially flat and a portion which is essentially helical.
Method for opening an end of a flexible tubular article, specifically a tubular knitted article, comprising the following phases:
- pneumatically transferring said article towards one end of a tubular member;
- directing the end of said article in a predetermined position with respect to a plurality of gripping units;
- holding said article with said gripping members in correspondence with the end to be opened;
- opening the gripping members whereby opening said ends of the article, wherein
- said end edge of the article is oriented to assume a conformation which is approximately orthogonal to a first direction of reciprocal alignment of a first pair of said counterpoised gripping members,
- a second pair of gripping members are aligned and counterpoised along a second direction, essentially orthogonal to said first direction, and
- said article is engaged by said first pair of gripping members and stretched along said first direction, while the gripping members of the second pair are held distanced from the article;
- and in which the gripping members of the second pair are subsequently approached to the article, gripping the article and stretching it in said second direction.
Method for opening an end of a flexible tubular article, specifically a tubular knitted article, comprising the following phases:
- pneumatically transferring said article towards one end of a tubular member;
- directing the end of said article in a predetermined position with respect to a plurality of gripping units;
- holding said article with said gripping members in correspondence with the end to be opened;
- opening the gripping members whereby opening said ends of the article.
Method said first pair of gripping members and stretched along said first direction, while the gripping members of the second pair are held distanced from the article;
- and in which the gripping members of the second pair are subsequently approached to the article, gripping the article and stretching it in said second direction.
Dependencies are inferred from the claim text.