Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1986-12-19
1988-02-16
Schmidt, Frederick R.
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
493 60, 493 64, 493342, 493370, 83121, 83145, 83500, B31B 114
Patent
active
047252618
ABSTRACT:
Apparatus and method for cutting an end portion of a carton blank, e.g. to form a stitch flap, employs a rotatably driven male cutting head cooperating with a rotatably driven female cutting head. The female cutting head has a peripheral cutting groove therein and an anvil surface adjacent one side of the groove. The male cutting head has a two edged slot cutting blade of predetermined arcuate length which enters the groove each revolution, and a knife which extends transversely away from the blade and engages the anvil surface each revolution. The blade has a scallop-like cut-out in the side adjacent the anvil surface. The cut-out modifies the blade to a single edged cutting blade for a small part of its length. Scrap portions produced from the carton blank by a slotting cut of the blade and a transverse cut of the knife are integrally connected together by a bridging piece enabled by this cut-out. This integral piece of scrap is conveyed by the groove to a stripping blade and then drops onto a conveyor, so eliminating any uncontrolled portion of scrap. The groove can have radial side channels for more positively gripping strips of scrap engaged therein.
REFERENCES:
patent: 3033064 (1962-05-01), Lee
patent: 3329049 (1967-07-01), Hubbard
patent: 3353460 (1967-11-01), Henc
patent: 3518922 (1970-07-01), Kuehn
patent: 3540357 (1970-11-01), Ward, Jr.
patent: 4295842 (1981-10-01), Bell
patent: 4530693 (1985-07-01), Isoua
Dunn, Jr. Henry L.
Millard Michael W.
Bartlett Edward D. C.
Dent Boyce C.
Schmidt Frederick R.
Showalter Robert
The Ward Machinery Company
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