Package making – Closing packages and filled receptacles – By means adapted to engage outturned seam of package cover
Reexamination Certificate
1999-04-29
2001-01-30
Kim, Eugene (Department: 3721)
Package making
Closing packages and filled receptacles
By means adapted to engage outturned seam of package cover
C053S550000, C053S374600
Reexamination Certificate
active
06178719
ABSTRACT:
The present invention concerns a device for cross joining and/or cross cutting of a moving web of paper or foil, especially in packaging machines for the flow-packing of mutually separated items such as consumer ice products, comprising a clamping tool which is moved in a circular path, possibly containing a knife to carry out a cut from the one side of the path towards an opposite and similarly circularly-rotated counter-tool at the other side of the path. These tool parts are typically arranged in a counter-rotating manner, so that they can be pressed towards each other during mutual advancement in a common movement section at the same rate of movement as that at which the product web is advanced. With flow-packing, this advancement is effected primarily by the influence of a driven pair of welding- or stamping-rollers which are used for the formation of a longitudinal assembly seam in the web of paper of foil, which is folded up to form a tubular holster around the products which are placed at mutual intervals on the web. The same tubular holsters must subsequently be cross-joined or cross-cut in the free areas between the products in the formation of individually packaged items, and it is well-known that the aforementioned rotating tool parts can effect both of these tasks, in that the knife holder can be configured as a welding tool or stamping tool for co-operation with a correspondingly-configured anvil, i.e. so that a cross-cut can be produced midway between a welding-together or stamping-together area provided at the same time, and which in one operation closes the rear end of the holster for the leading product and the front end of the holster for the following product.
The said rotating tool parts must naturally be moved synchronously with the advancement of the packaging web.
In packaging plants of the type considered, there will often exist-several parallel packaging lines in order to achieve a high capacity, and it is hereby advantageous that the said tool parts for all of the webs can commonly be placed on oppositely- and transversely-disposed rotation arrangements. On the other hand, there can thus arise the problem that the tool parts continue to effect their independent advancement function on all of the webs, even though situations arise in which, because of an operational failure, it could be desirable to completely stop the advancement of one of the webs, e.g. for the carrying out of a local repair. That or the remaining advancement functions for the relevant web should be able to be deactivated separately, but since the cutting-over advancement continues to work, the material web will nevertheless not be completely disengaged.
According to the invention, it is hereby a principal consideration that in such multi-line plants there should be provided means for the temporary and selective deactuation of the advancement function which is effected on the web material by the said tool parts in the individual sections.
This is difficult to achieve with purely rotating systems with common drive, but with the invention it is realized that this desirable function is achieved in a relatively simple manner if the relevant rotating function is replaced by a system with paracyclic movement, whereby the tool parts are rotated in their movement paths with substantially unchanged orientation in the space. Both the cutting and the advancement action will be the same as with the rotating system, but now with the practical possibility that the tool parts can be in connection with changeover means with control connections in the form of cables or hoses respectively to or rather from such power sources which, when required, can be used to effect a local displacement of the tool parts in such a manner that these can be retracted to positions in which they will not be able to cooperate in the action on the intervening web material during their continued circular movement.
The tool parts, or just one of the tool parts, can thus be mounted in a movable manner in a holder which continues to participate in the circular movement, so that the basic simplicity of the common drive-system can be totally maintained. It must be emphasized that the primary object of the invention is to provide the possibility for deactuation of the advancing action which normally takes place in connection with cross joining/cut-ting, and that it is not the cross-cutting function seen solely in itself which is desired to be deactuated, in that this almost per definition will not constitute any hindrance for an easy removal of the web material from the relevant packaging line.
REFERENCES:
patent: 5371999 (1994-12-01), Hansen et al.
patent: 5628163 (1997-05-01), Keopple et al.
patent: 5771660 (1998-06-01), Loewenthal
patent: 2 126 953 (1971-12-01), None
patent: 0 290 105 (1988-11-01), None
patent: 0 725 007 (1996-08-01), None
patent: 2 247 000 (1992-02-01), None
Kim Eugene
Nixon & Peabody LLP
Safran David S.
Tetra Pak Hoyer A/S
LandOfFree
Cross joining and/or cross cutting device in a packaging... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cross joining and/or cross cutting device in a packaging..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross joining and/or cross cutting device in a packaging... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2550857