Butchering – Sausage making – Linking
Patent
1997-03-21
1998-12-01
Little, Willis
Butchering
Sausage making
Linking
A22C 1112
Patent
active
058429158
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
It is known to close the shirred end piece of a casing, for example of an end of a sausage casing, by means of a U-shaped wire staple which is bent around the end piece. For this purpose, the apparatus has a closure region which is formed as a cutout in one or more plate-like elements which, in the mutually opposite borders of the cutout, contain guide grooves for the staple legs, while an anvil for bending the staple ends is provided at the end of the cutout. A ram pushes the staple, with its open side in front, into the closure region, in which the end piece which is to be closed is located.
A description of the product is usually provided on the casing. It is also possible to incorporate into the closure a cord loop, which may be provided with a label at a later stage. It is also known (U.S. Pat. No. 4,044,450, GB-A 1100849) to introduce a strip-like label into the path in which the staple moves to the closure region. The staple carries the label along with it and incorporates it into the casing closure. This operation only functions satisfactorily if the label is reliably carried along by the staple. Since, however, it cannot be fastened on the staple and is very lightweight, it may easily slide away to one side or the other during the advancement of the staple. Its projecting ends, on both sides, thus have to be very long in order to be carried along reliably. These ends are unsightly on the finished product. If there is printing on the label, it is very difficult to predict the location, on the finally incorporated label, of the printing in relation to the closure.
SUMMARY OF THE INVENTION
The object of the invention is to provide a process and an apparatus which avoids these disadvantages.
Accordingly, the front, free end of the label is introduced into the closure region before the end piece of the casing, the rear end of the label still being located in the label guide, with the result that the label is retained by the guide. The label is retained in this way until at least just before the commencement of the closure operation. Expediently, the rear end of the label still remains in the label guide during the closure operation and is only drawn out when the closed end piece of the casing is removed from the closure region.
The label guide is designed such that it opens out at the closure region and a label end extending therefrom is directed into the closure region. Advancement and retaining means are provided, and these ensure that a predetermined label section projects into the closure region, in order to be gripped by the closure staple together with the end piece which is to be closed, while the rear end of the label is still retained by the guide. This achieves precise, reproducible positioning of the label. The leading, free, non-supported end of the label is introduced into the closure region at a point in time at which it is not obstructed from doing so by a casing end piece located in the closure region. According to the invention, it is thus possible to switch on the means for advancing the label only when the closure region is free. This is expediently determined by a sensor which determines the presence of an end piece in the closure region. It is usually also sufficient to use a sensor which determines the removal of an end piece, because it can be assumed that the closure region is free immediately after the removal of an end piece. For this purpose, it is suitable to use, for example, a flap which covers, on the removal side, the anvil and part of the closure region and, when the closed end piece is removed, is raised from the closure region counter to spring force. This flap movement can signal the removal of the end piece to the control device and thus initiate the advancement of a new label. Even more simple, and thus preferred, is an embodiment in which the sensor determines whether the rear end of the label is located in the label guide. Since the label is only removed from the guide when the closed end piece is removed from the closure region, t
REFERENCES:
patent: 2225694 (1940-12-01), Freeman
patent: 4044450 (1977-08-01), Raudys et al.
patent: 4675945 (1987-06-01), Evans et al.
patent: 4773128 (1988-09-01), Stanley et al.
patent: 4796332 (1989-01-01), Stanley
patent: 5269116 (1993-12-01), Roberts et al.
Plewa Manfred
von der Heyden Dieter
Little Willis
Tipper Tie technopack GmbH
LandOfFree
Method and device for sealing off a packaging wrapper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for sealing off a packaging wrapper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for sealing off a packaging wrapper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2391108