Product overwrapping machine
AssigneeG.D Societa' Per Azioni
InventorFiorenzo Draghetti
Life of this patent
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Abstract
A machine for overwrapping products in sheets of wrapping material, whereby a product, traveling continuously along a path while maintaining a lateral surface perpendicular at all times to a traveling direction, is wrapped in a respective sheet, which forms a tubular wrapping about the product; the machine having a movable gripping device, which is maintained in a gripping position contacting end surfaces of the product parallel to the traveling direction, to feed the product along the path for at least the time taken to stabilize the tubular wrapping.
Claims14
A machine for overwrapping products (2) in sheets (33) of wrapping material, the machine (1) comprising conveying means (3, 13, 14, 15) for feeding a product (2) continuously in a given traveling direction (8) and along a given path (P), while maintaining a lateral surface (12) of the product (2) perpendicular at all times to said traveling direction (8);
- supply means (32) for feeding a sheet (33) of wrapping material through said path (P) at an intercepting station (31) where the sheet (33) is intercepted by the product (2);
- first wrapping means (87, 89) for engaging the sheet (33) and folding the sheet (33) into a U about the product (2);
- second wrapping means (91, 92;
- 103, 104) movable to and from an engaged position engaging the sheet (33) and for further folding the sheet (33) about the product (2) to form a tubular wrapping (35) with opposite open ends (36);
- first stabilizing means (60, 61) movable to and from an operating position to close the tubular wrapping (35) by means of a longitudinal joint;
- third wrapping means (84) for folding said open ends (36) on to the product (2);
- and second stabilizing means (85) for fixing said folded ends (36) by means of an end joint;
- the machine (1) being characterized in that said conveying means (3, 13, 14, 15) comprise a gripping device (43) movable with the conveying means (3, 13, 14, 15) along said path (P), and also movable, in relation to the conveying means (3, 13, 14, 15), to and from a gripping position contacting, in use, end surfaces (42) of the product (2) parallel to said traveling direction (8);
- and control means (45) for maintaining the gripping device (43) in the gripping position for at least one interval of time in which said first stabilizing means (60, 61) are in the operating position.
Dependencies are inferred from the claim text.