Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-04-16
1978-09-12
Hoag, Willard E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156304, 264248, 264295, 264296, 264322, 264339, B29C 1702, B29C 2400, B29C 2700
Patent
active
041135369
ABSTRACT:
A method of automatically making frames from elongate workpieces, more particularly plastics, characterized in that the workpieces are heated individually at predetermined places to be subsequently bent and at the ends. Each workpiece is conveyed transversely of its longituidinal extension along a path which is formed by longitudinal guides with predetermined edge curvatures and along which spatially curved guide-like stops are provided, so that the particular workpiece is forced to bend itself around the edge curvature. This operation is repeated at least in accordance with half the number of the places of the workpiece to be bent, whereafter the two ends of the workpiece have approached one another and the ends of the workpiece are melted and pressed against one another.
REFERENCES:
patent: 358552 (1887-03-01), Higgins
patent: 649857 (1900-05-01), Murphy
patent: 950280 (1910-02-01), Everson
patent: 2115441 (1938-04-01), Black
patent: 2687564 (1954-08-01), Whitney
patent: 3605472 (1971-09-01), Saito et al.
patent: 3834010 (1974-09-01), Wolfe
Randolph et al., Plastics Engineering Handbook, Reinhold, N.Y. (1960) pp. 504-507.
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