摘要:
In a method and apparatus for forming a space section (83) in a pair of concealed-slide-fastener stringers, with a pair of tapes (82, 82) gripped with interengaged coupling elements (80) disposed at the upper side of the tapes (82, 82), a pair of continuous concealed-slide-fastener stringers upwardly from the under side of the tapes (82, 82) by a pair of laterally spaced and vertically movable dies (30, 30) until head portions of a series of the interengaged coupling elements (80) are exposed to the dies (30, 30) and supported thereon. A punch (70) is then lowered to cut certain interengaged coupling elements (80) on the raised dies. Finally, an ejector (32) is raised through the dies (30, 30) to clamp the cut coupling elements (80) against the punch (70) and continues moving upwardly together with the punch (70) to pull the cut coupling elements (80) out of sewn stitches (85).
摘要:
In a method and apparatus for forming a space section (83) in a pair of concealed-slide-fastener stringers, with a pair of tapes (82, 82) gripped with interengaged coupling elements (80) disposed at the upper side of the tapes (82, 82), a pair of continuous concealed-slide-fastener stringers upwardly from the under side of the tapes (82, 82) by a pair of laterally spaced and vertically movable dies (30, 30) until head portions of a series of the interengaged coupling elements (80) are exposed to the dies (30, 30) and supported thereon. A punch (70) is then lowered to cut certain interengaged coupling elements (80) on the raised dies. Finally, an ejector (32) is raised through the dies (30, 30) to clamp the cut coupling elements (80) against the punch (70) and continues moving upwardly together with the punch (70) to pull the cut coupling elements (80) out of sewn stitches (85).
摘要:
A punch blade (72; 80) depresses the coupling heads (79) of a length of successive filamentary coupling elements (76) toward a knockout blade (39) while sandwiching stringer tapes (43, 44) between upper and lower grippers (55, 56, 21, 22). The punch blade (72; 80) is lowered until lower legs (78) of the coupling elements (76) are cut off by cutter blades (31,32). The punch blade (72; 80) and the knockout blade (39) are then lifted while gripping the severed coupling elements (76) therebetween to forcibly remove the coupling elements (76) out of engagement with sewing thereads (77) on the stringer tapes (43, 44). The upper grippers (55, 56) have confronting steps (61, 62) for engaging the sewing threads (77) so that the severed coupling elements (76) can be detached reliably and smoothly from the stringer tgapes (43, 44) without unduly tensioning the sewing threads (77) and stringertapes (43,44). The punch blade (80) may have a vertical reinforcement member attached to at least one side edge thereof and having a lower tooth (86) projecting downwardly beyond a lower edge (84) is pressed against the coupling elements (76), the lower tooth (86) enters between adjacent coupling elements (76) to position the coupling elements (76) against unwanted longitudinal displacement with respect to the punch blade (80).
摘要:
A punch blade (72; 80) depresses the coupling heads (79) of a length of successive filamentary coupling elements (76) toward a knockout blade (39) while sandwiching stringer tapes (43, 44) between upper and lower grippers (55, 56, 21, 22). The punch blade (72; 80) is lowered until lower legs (78) of the coupling elements (76) are cut off by cutter blades (31,32). The punch blade (72; 80) and the knockout blade (39) are then lifted while gripping the severed coupling elements (76) therebetween to forcibly remove the coupling elements (76) out of engagement with sewing thereads (77) on the stringer tapes (43, 44). The upper grippers (55, 56) have confronting steps (61, 62) for engaging the sewing threads (77) so that the severed coupling elements (76) can be detached reliably and smoothly from the stringer tgapes (43, 44) without unduly tensioning the sewing threads (77) and stringertapes (43,44). The punch blade (80) may have a vertical reinforcement member attached to at least one side edge thereof and having a lower tooth (86) projecting downwardly beyond a lower edge (84) is pressed against the coupling elements (76), the lower tooth (86) enters between adjacent coupling elements (76) to position the coupling elements (76) against unwanted longitudinal displacement with respect to the punch blade (80).
摘要:
The present invention concerns a slide fastener making machine designed to produce space sections of required span devoid of coupling elements at predetermined intervals in the interengaged slide fastener chain and a method for the same. The present apparatus includes: die means facing the fastener tapes for supporting the slide fastener chain horizontally; punch means disposed on the coupling elements side and being reciprocably movable toward the coupling element, said punch means having at the end surface a pair of laterally spaced apart cutting edges for cutting the upper leg portion of the pair of interengaged coupling elements at the connecting reversed portion side of the sewing thread and a gripping projection disposed centrally between the pair of the cutting edges for pressing the upper leg portions adjacent the interengaging head portions of the interengaged coupling elements; ejector means disposed in the die means reciprocably movable toward the gripping projection of the punch means, said punch means being upwardly movable in response to the upward movement of the ejector means while the upper leg portions adjacent to the interengaging head portions of the interengaged coupling elements is gripped between the edge of the ejector means and the gripping projection of the punch means; and means for holding the pair of fastener tapes. The coupling elements cut by the cutting edges or the dismembered coil fragments are suitable flattened by the gripping projection of the punch and the ejector so that they are released of the clinching tension of the sewing thread and get loose enough to be pulled out easily.
摘要:
The present invention concerns a slide fastener making machine designed to produce space sections of required span devoid of coupling elements at predetermined intervals in the interengaged slide fastener chain and a method for the same. The present apparatus includes: die means facing the fastener tapes for supporting the slide fastener chain horizontally; punch means disposed on the coupling elements side and being reciprocably movable toward the coupling element, said punch means having at the end surface a pair of laterally spaced apart cutting edges for cutting the upper leg portion of the pair of interengaged coupling elements at the connecting reversed portion side of the sewing thread and a gripping projection disposed centrally between the pair of the cutting edges for pressing the upper leg portions adjacent the interengaging head portions of the interengaged coupling elements; ejector means disposed in the die means reciprocably movable toward the gripping projection of the punch means, said punch means being upwardly movable in response to the upward movement of the ejector means while the upper leg portions adjacent to the interengaging head portions of the interengaged coupling elements is gripped between the edge of the ejector means and the gripping projection of the punch means; and means for holding the pair of fastener tapes. The coupling elements cut by the cutting edges or the dismembered coil fragments are suitable flattened by the gripping projection of the punch and the ejector so that they are released of the clinching tension of the sewing thread and get loose enough to be pulled out easily.