US 4,368,570 AGranted

Method of and apparatus for attaching top and bottom stops to a slide fastener chain

AssigneeYoshida Kogyo K. K.

InventorToyoo Morita

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Abstract

A method of attaching top and bottom stops to a slide fastener chain at one and the same stage of manufacture. The fastener chain is moved along a path until a trailing end of a preceding pair of coupling element groups arrives at a first fixed die, by which time leading end portions of a succeeding pair of coupling element groups are disengaged from each other. With the trailing end of the preceding pair of coupling element groups retained at the first die, an adjacent pair of opposed blank tape portions is sagged until the endmost disengaged coupling elements arrive at a second fixed die spaced a predetermined distance from the first die along the path. Finally, a bottom stop and a pair of top stops are attached concurrently and respectively to the trailing end of the preceding pair of coupling element groups at the first die and to the disengaged endmost portions of the succeeding pair of coupling element groups at the second die. An apparatus for carrying out this method is also disclosed.

Claims10

Dependent claims

A method of attaching top and bottom end stops to a slide fastener chain including a pair of continuous stringers, each stringer having successive spaced groups of coupling elements mounted on a continuous stringer tape and interengaged with opposed complementary groups of coupling elements on the other stringer tape, the fastener chain having successive spaced pairs of opposed blank tape portions between the successive spaced pairs of coupling elements groups, there being a plurality of sliders each threaded on a respective one of the successive spaced pairs of coupling element groups at a predetermined position, said method comprising the steps of:

(a) moving the fastener chain longitudinally along a path in a predetermined direction;
(b) sensing the arrival of one of the successive spaced pairs of coupling element groups;
(c) in response to said arrival, disengaging leading end portions of said one of the successive pairs coupling element groups;
(d) further moving the fastener chain along the path in said predetermined direction until a trailing end of a preceding pair of coupling element groups arrives at a first fixed point;
(e) with the trailing end of the preceding pair of coupling element groups retained at said first fixed point, sagging one of the successive pairs of opposed blank tape portions until the endmost disengaged coupling elements arrive at a second fixed point spaced a predetermined distance from said first fixed point along the path;
and
(f) attaching a bottom end stop and a pair of top end stops concurrently and respectively to the trailing end of the preceding pair of coupling element groups at said first fixed point and to the disengaged endmost portions of said one of the successive pairs of coupling element groups at said second fixed point.

4 more elements

An apparatus for attaching top and bottom end stops to a slide fastener chain including a pair of continuous stringers, each stringer having successive spaced groups of coupling elements mounted on a continuous stringer tape and interengaged with opposed complementary groups of coupling elements on the other stringer tape, the fastener chain having successive spaced pairs of opposed blank tape portions between the successive spaced pairs of coupling element groups, there being a plurality of sliders each threaded on a respective one of the successive spaced pairs of coupling element groups at a predetermined position, said apparatus comprising:

(a) a frame having a guide table for supporting thereon the fastener chain;
(b) means for moving the fastener chain longitudinally along a path over said guide table in a predetermined direction;
(c) means for sensing the arrival of one of the successive spaced pairs of coupling element groups;
(d) means responsive to said arrival for disengaging leading end portions of said one of the successive pairs of coupling element groups;
(e) a pair of first and second fixed dies spaced a predetermined distance from each other along the path;
(f) means for further moving the fastener chain along the path in said predetermined direction until a trailing end of a preceding pair of coupling groups arrives at said first die;
(g) means, responsive to said arrival of the trailing end of the preceding pair of coupling element groups, for sagging one of the successive pairs of opposed blank tape portions until the endmost disengaged coupling elements arrive at said second die, said further moving means retaining the trailing end of the preceding pair of coupling element groups at said first die during said sagging;
and
(h) a pair of first and second punches cooperative with said first and second dies, respectively, for attaching a bottom end stop and a pair of top end stops concurrently and respectively to the trailing end of the preceding pair of coupling element groups at said first die and to the disengaged endmost portions of said one of the successive pairs of coupling element groups at said second die.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/322,886Filed 19 Nov 1981
Priority: JP 55-16726627 Nov 1980
Granted: 18 Jan 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A44B 19/60
Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00: applying end stops upon stringer tapes
Y10T 29/49782
Method of mechanical manufacture: of a slide fastener
Y10T 29/49783
Of a slide fastener: of slider
Y10T 29/5101
Plural diverse manufacturing apparatus including means for metal shaping or assembling: slide fastener or slide fastener element