摘要:
A method for forming ends of a slide fastener chain wherein, coil-shaped fastener elements such as linear fastener elements are attached and sewed to side edge portions of a pair of fastener tapes with sewing yarns as fixing yarns while a core thread is inserted through the fastener elements. The coil-shaped fastener elements are cut off at leg portions, each of which is in contact with the fastener tape, at ends of the fastener elements, so that cut end portions are formed. These cut end portions are pushed inward of the side edge portions, and then, the leg portions and inverted portions thereof are fused to the fastener tapes by heating. As a result, each end of the fastener elements is stabilized, so that the resultant slide fastener is safe.
摘要:
According to the fastener chain, method and apparatus for forming ends thereof, coil-shaped fastener elements as linear fastener elements are attached and sewed to side edge portions of a pair of fastener tapes with sewing yarns as fixing yarns while a core thread is inserted through the fastener elements. The coil-shaped fastener elements are cut off at leg portions, each of which is in contact with the fastener tape, at ends of the fastener elements, so that cut end portions are formed. These cut end portions are pushed inward of the side edge portions, and then, the leg portions and inverted portions thereof are fused to the fastener tapes by heating. As a result, a form of each end of the fastener elements is stabilized, so that the resultant slide fastener is good in safety.
摘要:
According to the fastener chain, method and apparatus for forming ends thereof, coil-shaped fastener elements as linear fastener elements are attached and sewed to side edge portions of a pair of fastener tapes with sewing yarns as fixing yarns while a core thread is inserted through the fastener elements. The coil-shaped fastener elements are cut off at leg portions, each of which is in contact with the fastener tape, at ends of the fastener elements, so that cut end portions are formed. These cut end portions are pushed inward of the side edge portions, and then, the leg portions and inverted portions thereof are fused to the fastener tapes by heating. As a result, a form of each end of the fastener elements is stabilized, so that the resultant slide fastener is good in safety.
摘要:
An apparatus for gapping a stringer chain at predetermined intervals is disclosed, which comprises an anvil and a cutter cooperating therwith in cutting a length of coupling elements on a pair of support tapes. The cutter includes a vertically movable punch which is provided with a plurality of positioning prongs adapted to engage in between adjacent elements and hold the stringer chain firmly in place during gapping thereof.
摘要:
A punch blade depresses the coupling heads of a length of successive filamentary coupling elements toward a knockout blade while sandwiching stringer tapes between upper and lower grippers. The punch blade is lowered until lower legs of the coupling elements are cut off by cutter blades. The punch blade and the knockout blade are then lifted while gripping the severed coupling elements therebetween to forcibly remove the coupling elements out of engagement with sewing threads on the stringer tapes. The upper grippers have confronting steps for engaging the sewing threads so that the severed coupling elements can be detached reliably and smoothly from the stringer tapes without unduly tensioning the sewing threads and stringer tapes. The punch blade may have a vertical reinforcement member attached to at least one side edge thereof and having a lower tooth projecting downwardly beyond a lower edge for being pressed against the coupling elements. The lower tooth enters between adjacent coupling elements to position the coupling elements against unwanted longitudinal displacement with respect to the punch blade.
摘要:
Automatic assembly for sewing flypiece to a continuous slide fastener chain includes a sewing machine, a gapping device from which the continuous chain having element-free gaps formed at regular intervals therealong is fed to the sewing machine, and a flypiece delivery system for successively retrieving individual flypieces one at a time from a stack and successively advancing to the sewing machine. The flypiece delivery system is arranged such that successive flypieces are sewn to the fastener chain virtually even with the rate at which gapped chain is delivered from the gapping device.
摘要:
In the apparatus for forming a space in and simultaneously fixing a stop to a fastener chain of this invention, a casing is provided with a tubular frame portion in which a punch holder having a space punch and a driver punch is received for sliding movement. This apparatus further includes a cutting punch between the driver punch and the inner wall of the tubular frame portion. When the punch holder descends, the cutting punch cuts a stop forming wire and forms the cut wire length into a stop preform in cooperation with an anvil. As the punch holder further descends, the driver punch drives the stop preform into the tapes of the chain and simultaneously the space punch forms a space in the chain. During this operation, the cutting punch rises relative to the punch holder so as not to damage the tapes.
摘要:
A chain of interdigitating coupling elements on a pair of slide fastener stringer tapes is gapped and severed into a short length of chain with coupling element residuals or debris left on the tapes at the gapped chain portion. The chain is then manually fed between and into engagement with a pair of vertically aligned circular brushes driven for continuous rotation to scrape the coupling element residuals off the tapes. A pair of guide troughs guide the chain into alignment with the brushes, each guide trough having a pair of converging sidewalls confining one of the brushes solely to frictional engagement with the chain.
摘要:
An apparatus for removing coupling element residuals from a coupled pair of slide fastener stringers comprises a scraper roll drivable for continued rotation and an idler tumbler roll around which the slide fastener stringers travel for rotating the tumbler roll. The tumbler roll has a radial wing which when the tumbler roll is rotated, brings the coupling element residuals thereon into contact with the scraper roll while it is revolving so as to scrape off the residuals reliably. The tumbler roll has pawl means for engaging the fastener stringers at a predetermined position thereon so as to place the coupling element residuals on the tumbler wing. The tumbler roll is rotatable in response to engagement of the pawl means with the fastener stringers being fed. The apparatus of one embodiment includes stop means for temporarily stopping rotation of the tumbler roll and guide means for guiding the fastener stringers properly onto the tumbler wing.
摘要:
A method of providing a slide fastener chain with gaps free of fastener elements at predetermined interval is disclosed, the method comprising imparting a tendency to the fastener chain to spread the confronting longitudinal edges of its opposed stringer tapes prior to removal of the fastener elements, and maintaining constant tension over a length of the fastener chain, whereby the gaps can be formed accurately at predetermined locations along the length of the fastener chain. A preferred form and construction of apparatus tailored to carry this method into practice is also disclosed.