US 4,010,524 AGranted

Apparatus for manufacture of continuous hinge

OwnerAkashi Osamu, Nakamura Masazoinventors

Life of this patent

Estimating the term…

Abstract

There is disclosed a manufacture of a continuous hinge. The process is as follows. A metal strip is fed intermittently by a predetermined length towards a press-machining station where the strip is simultaneously cut and bent to form a hole, flap, swaged flap and loop during the stoppage of the strip. The strip having loops is cut into predetermined length to form leaves for a hinge. A pair of leaves are assembled by inserting a pintle through the aligned loops, and the assembly is reformed by roll means.

Claims1

Dependent claims

An apparatus for manufacturing a continuous hinge comprising:

a. an elongated work support having input and output ends disposed to define a travel path and to support first and second moving adjacent strips (1, 1') on said travel path;
b. pay-off reel means for supplying first and second metal strips along said travel path for forming opposing leaves of a continuous hinge;
c. a press-machining station (10) including strip receiving roll means (28) for receiving and feeding each of the metal strips intermittently by a predetermined length, a pair of die means, each for simultaneously forming in each of the strips an outer side hole (2), notch (5) defining an inner flap (3) and a partially looped flap (7) by bending said flap (3) so that the notches and partially looped flaps in the first strip are offset from those for the second strip, each of said pair of die means including a punch (12) for forming the hole, a cutting block (11) for cutting the notch, a laterally slidable swaging die (17) biased away from the flap (3) defined by the notches and having an inwardly curved portion and a slant (20), an elevatable block having a curved projection (16) and a slant (19) for hitting and urging the swaging die towards the flap (3) by the slidable engagements of the slants (19) and (20) thereby forming the partially looped flap (7) by the press of the inwardly curved portion of the swaging die mating the curved projection of the elevatable block which is lowered, and means for lowering the punch, cutting block and elevatable block at the same time in a timed relation with the stoppage of each of the strips;
d. roller means (36) for bringing the partially looped flaps of the first strip into channel-like alignment with the adjacent partially looped flaps of the second strip;
e. guide roll means for guiding a wire pintle into a channel formed by aligned flaps of the first and second strips;
f. grooved rolls (38) to which said channel-like partially looped flaps with the wire pintle therein are directed, so as to constrict said partially looped flaps and close the loops over the wire pintle thereby forming a continuous hinge;
and,
g. a pair of laterally opposed squeeze rolls (39) having an annular depression (40) to complete the encircling of the wire serving as a pintle by the formed loops.

5 more elements

Dependencies are inferred from the claim text.

patentgrep

Loading patent…

Abstract

An apparatus for manufacturing a continuous hinge comprising:

a. an elongated work support having input and output ends disposed to define a travel path and to support first and second moving adjacent strips (1, 1') on said travel path;
b. pay-off reel means for supplying first and second metal strips along said travel path for forming opposing leaves of a continuous hinge;
c. a press-machining station (10) including strip receiving roll means (28) for receiving and feeding each of the metal strips intermittently by a predetermined length, a pair of die means, each for simultaneously forming in each of the strips an outer side hole (2), notch (5) defining an inner flap (3) and a partially looped flap (7) by bending said flap (3) so that the notches and partially looped flaps in the first strip are offset from those for the second strip, each of said pair of die means including a punch (12) for forming the hole, a cutting block (11) for cutting the notch, a laterally slidable swaging die (17) biased away from the flap (3) defined by the notches and having an inwardly curved portion and a slant (20), an elevatable block having a curved projection (16) and a slant (19) for hitting and urging the swaging die towards the flap (3) by the slidable engagements of the slants (19) and (20) thereby forming the partially looped flap (7) by the press of the inwardly curved portion of the swaging die mating the curved projection of the elevatable block which is lowered, and means for lowering the punch, cutting block and elevatable block at the same time in a timed relation with the stoppage of each of the strips;
d. roller means (36) for bringing the partially looped flaps of the first strip into channel-like alignment with the adjacent partially looped flaps of the second strip;
e. guide roll means for guiding a wire pintle into a channel formed by aligned flaps of the first and second strips;
f. grooved rolls (38) to which said channel-like partially looped flaps with the wire pintle therein are directed, so as to constrict said partially looped flaps and close the loops over the wire pintle thereby forming a continuous hinge;
and,
g. a pair of laterally opposed squeeze rolls (39) having an annular depression (40) to complete the encircling of the wire serving as a pintle by the formed loops.

5 more elements