Method and apparatus for manufacturing a hooked fastener part for hook-and-loop fasteners
AssigneeYoshida Kogyo K. K.
InventorsHissai Nishiyama, Takao Kanada
Life of this patent
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Abstract
A continuous base of sheet material carrying on its one surface a number of successive rows of laterally spaced loops raised from the one surface is advanced continuously or intermittently along an arcuate path with the loops directed outwardly of the arcuate path. Each of the loops of one of the rows is cut on one of its legs at a two different points by reciprocating a cooperating pair of relatively movable cutting members two times along a given reciprocating path while the one row of loops is in the reciprocating path of the cutting members along the arcuate path.
Claims15
A method of manufacturing a hooked fastener part for hook-and-loop fasteners, comprising the steps of:
- (a) feeding a continuous base of sheet material, having a number of successive rows of laterally spaced loops projecting from one surface of the base, in a longitudinal direction along an arcuate path with said loops directed away from the center of said arcuate path;
- (b) introducing said rows of loops, successively into a given reciprocating path of a cooperating pair of cutting members relatively movable toward and away from each other along said reciprocating path;
- and
- (c) cutting each loop of one of said rows on one of its legs at two different points by reciprocating said cutting members two times while said one row of loops is in said reciprocating path of said cutting members along said arcuate path.
A method according to calim 1 wherein said reciprocating path of said cutting members extends in a plane substantially parallel to a tangent to said arcuate path.
A method of manufacturing a hooked fastener part for hook-and-loop fasteners, comprising the steps of:
- (a) feeding a continuous base of sheet material, having a number of successive rows of laterally spaced loops projecting from one surface of the base, intermittently in a longitudinal direction along an arcuate path with said loops directed away from the center of said arcuate path;
- (b) introducing said rows of loops, while being intermittently fed along said arcuate path, successively one at a time into a given reciprocating path of a cooperating pair of cutting members relatively movable toward and away from each other along said reciprocating path, said reciprocating path extending in a plane substantially parallel to a tangent to said arcuate path;
- (c) cutting each loop of one of said rows on one of its legs at a first point between the outer end of each loop and said surface of the base by once reciprocating said cutting members while said one row of loops is at rest in said reciprocating path of said cutting members;
- (d) displacing said center of said arcuate path in a direction perpendicular to said plane of said reciprocating path while said one row of loops is at rest in said reciprocating path of said cutting members;
- and
- (e) cutting each loop of said one row, while at rest in said reciprocating path, on its one leg at a second point spaced from said one point by again reciprocating said cutting members.
An apparatus for manufacturing a hooked fastener part for hook-and-loop fasteners, comprising:
- (a) means providing an arcuate path for guiding therealong a continuous base of sheet material having a number of successive rows of laterally spaced loops projecting from one surface of the base with said loops directed away from the center of said arcuate path;
- (b) means for feeding said base in a longitudinal direction along said arcuate path on said guide means;
- (c) a cooperating pair of cutting members disposed adjacent to said arcuate path on said guide means and relatively movable toward and away from each other along a given reciprocating path;
- and
- (d) means for actuating said cutting members in synchronism with said feeding means such that said cutting members reciprocate two times while one of said rows of loops are being fed in said reciprocating path of said cutting member along said arcuate path on said guide means.
An apparatus for manufacturing a hooked fastener part for hook-and-loop fasteners, comprising:
- (a) means providing an arcuate path for guiding therealong a continuous base of sheet material having a number of successive rows of laterally spaced loops projecting from one surface of the base with said loops directed away from the center of said arcuate path;
- (b) means for feeding said base intermittently in a direction along said arcuate path on said guide means;
- (c) a cooperating pair of cutting members disposed adjacent to said arcuate path on said guide means and relatively movable toward and away from each other along a given reciprocating path, said reciprocating path extending in a plane substantially parallel to a tangent to said arcuate path;
- (d) means for actuating said cutting members to reciprocate twice with respect to one another each time one of said rows of loops is at rest in said reciprocating path;
- and
- (e) means for displacing said center of said arcuate path on said guide means in a direction perpendicular to said reciprocating path of said cutting members in a predetermined timed relation to the reciprocating movement of said cutting members.
Dependencies are inferred from the claim text.