TH7107B - Methods and machines for making zipper teeth parts - Google Patents

Abstract

Method and machine for making zipper teeth parts from metal wire with a rather Y-shaped cross-section. where a blank piece of material is cut or being slashed from a metal wire by joint action between the cutting dies and the hammer cut off And quite at the same time the metal wire is chamfered along the next cutting line. by chamfer edge to form a relatively V-shaped groove that extends in and along the surrounding surface of the metal wire head. and the outer surface of each of the two opposite leg sections of the metal wire. The next shearing process produces a blank piece of material. which was already chamfer at the edges surrounding the top and bottom of it that extends along the surrounding surface of the head and the outer surface of each leg of blanks, finished zips, molded from chamfered blanks. have a smooth appearance When touching and ensuring smooth sliding movement of the slider which can be guaranteed in regards to opening and close the zipper smoothly

Claims (3)

1.How to make a zipper teeth piece A type in which a continuous long metal wire of a relatively cross-section is Y-shaped. That includes a header and a pair of legs Is entered at intervals in a vertical upward direction. Pass through the die cut at a predetermined pitch. The metal wire is then cut into blank pieces of material that are the thickness of each product. This is done by a combination of the cutting edges arranged at the rear end of the cutting die that can be moved by the ram and the cut-off edge of the clamped-out hammer that can be moved relative to the moving die. Back and forth, and then the blank head is molded into the zipper tooth header. This is done by a combination of the head forming dies connected to the front end of the cutting dies. And a puddle-forming hammer held above the head forming position And able to move back and forth vertically together And exit from the die forming the head In a manner consistent with the movement of the head forming die Where improvements consist of Chamfer the metal wire along the next cut. To form a relatively V-shaped groove overhang And along the surrounding surface of the head And the outer surface of each of the legs of the metal bottle at the same time It was approximately the same as that one piece of bare material was cut from the metal wire. 2. Procedure according to claim 1, where such chamfering includes forcing metal wire towards the edge of the chamfer. Of the hammer cut out By the movement of the cutting dies The edge of the chamfer will be vertical distance. And downwards from the above surface The cutting edge Is a distance equal to that thickness of the piece of material. Blank that was cut off The chamfer edge has an equilateral triangular cross-section. And the shape corresponds to the contour of the corresponding part of the metal wire Established By the surrounding surface of the head And the outer surface Of each leg section of the metal wire And contour that was set up within the edge of the chamfer Slightly smaller than the contour of metal wire. 3. Machine for making a zippers with a head, a pair of zippers and a pair of legs. Types including paths for feeding metal wires Long continuous intermittent with a relatively Y-shaped cross-section Including one header And a pair of legs In a vertical upward direction It is a predetermined pitch distance. RAM that moves back and forth along a level Dies with vertical pilot holes For the passage of metal wire. And is powered by the said RAM To move back and forth across the path of the metal wire. Head forming dies that are attached to the front end of the die. A fixed cut-out hammer with a cutting edge arranged at the front end of it and can be slide relative to the top surface of the die. To cut the blank from the metal wire and cut the punches to form the basins arranged on the head forming position. And can move back and forth vertically in a manner consistent with the movement of the head forming die. To form the head of a blank that has been sheared. This is the header of the finished zippers. Where improvements consist of Chamfer Blade Provided on the aforementioned hammer And has chamfer edges that are spaced along the level and to the back From the said cutting edge Of such cut-off hammer The edge of the chamfer will be vertical distance. And downward from the above surface, the aforementioned cutting edge Is a distance equal to that thickness of the blank that has been sheared off. The chamfer edge has an equilateral triangular cross-section. The shape corresponds to the contour of the corresponding portion of the metal wire, defined by the surrounding surface of the head and the outer surface of each leg section of the metal wire. And the contour, defined by the chamfer edge, is slightly smaller than the contour of the metal wire.