(57) An apparatus of a compact structure for caulking upper and lower elements of a fastener
wherein an upper fastener element feeding mechanism can be exactly associated with
a caulking mechanism in the caulking portion and wherein a caulking force can be easily
and surely adjusted.
An apparatus for respectively feeding upper and lower button elements by means of
individual pushers ( 3, 4 ) into a lower pocket of a punch ( 1 ) and a pocket on the
upper face of a die and caulking the upper and lower button elements integrally by
the downward movement of the punch ( 1 ) comprises,
a driving cylinder ( 8 ) which is directly driven with a predetermined delay by
vertical movement of the punch ( 1 ),
a cam member ( 14 ) which is vertically moved in synchronism with reciprocation
of the driving cylinder ( 8 ),
a swing lever ( 18 ) which is swung in association with pivotal movement of the
cam member ( 14 ), and
a pusher ( 3 ) for feeding the upper button element, of which one end is pivoted
to the swing lever ( 8 ) and the tip of the other end is reciprocated between the
lower pocket of the punch ( 1 ) and a stand-by position.
Favourably, the apparatus includes the driving cylinder ( 8 ) including a compression
air pressure regulating means and the lower button element feeding pusher ( 4 ) being
provided with a driving cylinder ( 2 ).
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