Molding apparatus with a tuft feeder for making a brush
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United States of America Patent
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Mar 17, 1998
Grant Date -
N/A
app pub date -
Mar 28, 1995
filing date -
Mar 29, 1994
priority date (Note) -
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Abstract
A brush making machine with a mold for injection molding of brush bodies is disclosed. The mold includes a stationary mold part, a movable mold part and a pair of complementary mold parts fitting into a recess of the movable mold part. The complementary mold parts have tuft insertion holes. While one of the complementary mold parts fills the recess of the movable mold part and a brush body is injection molded with tufts of bristles embedded in the molding material, the other complementary mold part is in front of a tuft feeder for introducing tufts of bristles into the tuft insertion holes. The tuft feeder includes a plurality of tuft picking and transfer tubes which are movable to pick out tufts of bristles from a bristle container and to transfer each of these tufts to a position adjacent one of the tuft insertion holes. Plunger members penetrate into respective tubes to push out the tufts of bristles contained therein and to force them into and through the tuft insertion holes.
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