METHOD AND APPARATUS FOR FORMING SPACE SECTIONS IN A SLIDE FASTENER

摘要

METHOD AND APPARATUS FOR FORMING SPACE SECTIONS IN A SLIDE FASTENER A method and apparatus for forming space sections in a continuous length slide fastener chain are proposed in which the interlocking elements fastened on the carrier tapes within the section are pressed and deformed with a punch-die unit having a composite punch composed of an outer punch and an inner punch and the thus deformed elements are retained on the die as engaged with the recessed grooves on the upper surface of the die and lower surface of the inner punch while the carrier tapes are pulled and displaced by the individual grippers from the front of the punch-die unit to an obliquely rearward direction, preferably, at such an angle that the angle between the moving line of the gripper and the center line of the punch-die unit is about a half of the tape-abstracting angle whereby an advantage is given that all of the elements within the section can be removed from the carrier tape with a uniform abstracting angle to eliminate the prior art problems caused by the unevenness in the abstracting angle among the elements to be removed within a section from the carrier tape.