Stock material or miscellaneous articles – Structurally defined web or sheet – Fold at edge
Patent
1995-10-10
1997-06-10
Thomas, Alexander
Stock material or miscellaneous articles
Structurally defined web or sheet
Fold at edge
156204, 156223, 156226, 156227, 1563797, 156361, 156459, 156580, B32B 304, B32B 3100
Patent
active
056373767
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a pile of packages, with copper laminae, for making plastic laminates formed by bands laid in serpentine fashion, a process for forming said pile and an automatic machine for forming said pile by means of said process.
The Italian patent application No. MI93 000224 of 10 Feb. 1993 discloses a process for obtaining a pile of packages, including copper laminae, from continuous serpentine-laid bands having flat metal sheets placed between the packages. Insulating sheets are laid between said sheets and the metal bands.
The above invention discloses a machine that automatically forms a pile of packages similar to that disclosed by the above Italian patent application, the sheets of insulating material possibly being replaced by serpentine-wise laid bands associated to the metal bands. Subject of the invention is therefore an assembly machine for piles of packages to make plastic laminates that include laminae, especially of copper, made from metal bands, especially of copper, laid serpentinewise between one set and another of sheets of prepreg with flat sheets laid between packages.
Said assembly machine comprises: rectangular opening to receive a work table on which the piles of packages are formed, at least one reel of metal band, especially copper, translating on parallel guides from one side of the work table to the other, along longitudinal guides, from their idle positions one on each side of the working surface, for holding down, as the working sequence requires, the pile of packages being formed on the work table, synchronising all the movements.
By making the carriages move back and forth across the work table and by placing, at the start of each sequence, the extremity of one or more metal bands on said table, laying on said extremity, after each alternating movement of said carriages, a set of sheets of prepreg and intermediate sheets, the pile of packages will be gradually formed, with metal bands laid serpentinewise and describing bends at 180.degree. in one direction and then in the other between one package and the next.
By operating the hoisting unit the work table can be slowly lowered during formation of the pile to keep the upper surface substantially in line with the work surface. The stabilizing unit, placed at the end of the work table opposite that towards which the bands are oriented, moves, during movement of the carriages towards that end of the work table, onto the pile being formed and holds it firm to facilitate the bands in describing the 180.degree. bend, in one direction and then in the other at each stroke of the carriages.
On each carriage, together with the reel of metal band, a reel of insulating band can be associated. The serpentine that winds between one package and another therefore has a metal face and an insulating face. The insulating face matches with the intermediate sheets while the metal face matches with the set of prepreg sheets. In a preferred version the machine has two reel-carrying carriages.
The work sequence starts with the two carriages placed at one end of the work table laying upon it in the following order: the associated ends of an insulating band, of a metal band, the associated ends of the second metal band and of the second band of insulating material.
By causing the two carriages to make alternating movements from one side of the work table to the other, and by placing on the pile being formed an intermediate sheet alternating with a set of prepreg sheets, at each stroke of the carriage and therefore at each 180.degree. bend of a band, the pile of packages is gradually formed.
The feed carriages preferably carry two reels each, a lower one for the metal band and an upper one for the insulating band, their axes being parallel and orthogonal to the direction of carriage movement.
The two reels are wound in opposite directions. The insulating band passes round the reel carrying the metal band.
At the lower end of each carriage parallel to the reel, there is an idle roller for guiding the bands on the side opposite to the direct
Cedal S.r.l.
Striker Michael J.
Thomas Alexander
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