Method and apparatus for forming parallelepipedic packages having folded-up end flaps from a continuous tubular material and for effecting a two-stage advance of the material to ensure proper registration for indicia on the package

Abstract

Abstract 1,097,086. Packaging-machines. TEPAR A.G. Dec. 10, 1965 [Jan. 21, 1965], No. 52579/65. Heading B8C. A packaging machine in which articles or increments of material are fed into a tube of packaging film &c. which is sealed transversely at intervals to form packages, includes means which flatten end flaps formed by package shaping and are used to vary the distance the tube is fed through the package-forming area to produce registration of the package or printing &c. relative to the transverse sealing, severing or other operations. The machine forms rectangular sided packages by associating mould halves 2, 3 and end flaps forming members 4 with the sealing- jaws 6, 7. The members 4 are pivoted assemblies at 5 and their inward swinging, flap pressing movement normally draws down the tube to an extent additional to that accomplished by the (as shown) vertical reciprocating movement of the closed jaws and mould halves. This additional movement is varied for registration purposes by reducing the inward swing. Pivoting of the members 4 is produced by lever and draw rod means 11, 14, Fig. 4, the rod 14 being moved horizontally by a cam track 16 as the jaws and mould move vertically. The throw of the draw rod and thus the movement of the members 4 is altered by shifting the cam track horizontally by pneumatic or other means 24 in response to signals emanating from a photo-electric device (not shown) scanning marks on the packaging web. The jaw and mould means may be duplicated for continuous tube movement. Coarse and fine movement of the track 16 is provided for.

Inventors

• 👤 Hans A G Abrahamson

Bibliographic Details