Butchering – Sausage making – Linking
Patent
1993-12-15
1995-06-20
Little, Willis
Butchering
Sausage making
Linking
452 46, A22C 1112
Patent
active
054256674
DESCRIPTION:
BRIEF SUMMARY
It is known for bendable clips for closing packing sheaths, particularly for closing the ends of sausage casings, to be individually prefabricated in U-shape, to be joined to one another to form flexible magazine strips, to be introduced into the magazine of a closing machine and to be bent around the object which is to be tied by a machine stroke in a closing station of said machine (DE-A-24 10 332). The U-shaped configuration also includes clips of this kind in which the legs form an obtuse angle with the web connecting them (DE-OS 32 44 979). It is known for such prefabricated U-shaped clips to be provided with a code, which for example indicates the initials of the processing firm. After the clips have been produced this code can be applied to the back of the web by a special stamping operation. For this purpose only the length of the web is then of course available.
It is known to print a code, for example the packing or expiry date, on closure ties of paper or plastic material stiffened by wire inserts. Since these closure clips transmit only slight closing forces and therefore there is no risk of damage to the packed object through cut-off ends, it is customary to process them from an endless stock, the printing being applied to the endless strip in a printer disposed upstream of or integrated into the closing machine.
In the case of bendable clips of wire material, Coding with changing day-to-day dates is unknown. In the first place, there is no room on the web of the clips preformed in U-shape. Secondly, the stamping can be done only by the manufacturer of the clips, who would always have to supply exact ordered quantities for each packing date which is to be marked on the clips, and these exact quantities would then also have to be used on the day marked, as otherwise they would be unutilizable. A procedure of this kind is therefore unacceptable.
The problem underlying the invention is therefore that of providing a method which enables bendable clips of wire material to be coded in conformity with consumption on a length which can be greater than that of the web.
The solution provided by the invention comprises a method of applying markings to objects closed by a bendable clip of wire material, wherein small wire rods prefabricated and magazined individually and in an unbent form are coded and bent around the object by means of one and the same machine stroke. The small rods have a vacant coding surface and are fed from a magazine strip in which they are arranged in a row parallel to one another. They are profiled to form a coding surface and are arranged in a row with their coding surfaces identically oriented. It is based on two very different prerequisites. One of these is that the clips should not be supplied already in a U-shape, as was customary hitherto, but in an unbent form, so that they can be stamped with a code marking over a length which is greater than the length of the web. The other consists of the realization that the coding can be applied very inexpensively if it is coupled to the closing operation. The machine stroke bending the clip around the object to be tied can be used simultaneously for stamping the code. In addition, the same machine stroke can be used for preforming the clips in a U-shape.
The additional advantage is thereby gained that the clips prefabricated and magazined in the form of small straight rods take up substantially less space than the clips hitherto prefabricated and magazined in a U-shape, and therefore are substantially more convenient to handle. The magazines contain a larger number of small rods and therefore need less frequent replenishing in the closing machines.
It is true that in nailing and stapling machines working with U-shaped clips it is known to prefabricate and magazine the latter in an unbent shape and to bend them into a U-shape only in the stapling or nailing apparatus (U.S. Pat. Nos. 3,009,156, 3,504,838 and 4,570,841); but in any case coding is out of the question for nailing and stapling clips, as these are too thin. It was also not a
REFERENCES:
patent: 3009156 (1961-11-01), Lerner
patent: 3380226 (1968-04-01), Tracy
patent: 3504838 (1970-04-01), Cairatti
patent: 4044450 (1977-08-01), Raudys et al.
patent: 4570841 (1986-02-01), Olessen
patent: 4709450 (1987-12-01), Stanley et al.
patent: 4796332 (1989-01-01), Stanley
Hagedorn Ewald
Plewa Manfred
Little Willis
Technopack Ewald Hagedorn KG (GmbH & Co)
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