CN1320969C

CN1320969C - Method for manufacturing zipper teeth

Info

Publication number: CN1320969C
Application number: CNB2004100778546A
Authority: CN
Inventors: 朱国光; 黄国亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-15
Filing date: 2004-09-15
Publication date: 2007-06-13
Anticipated expiration: 2024-09-15
Also published as: CN1748895A

Abstract

The invention relates to a method for manufacturing zipper teeth, which processes flat wire rods into Y-shaped zipper teeth through a continuous stepping die and comprises the following steps: at a first station, the side edge of the flat wire of one processing unit is subjected to edge cutting and covering treatment, the outer line type of the Y-shaped zipper teeth is symmetrically cut, the front end surface and the rear end surface of the Y-shaped zipper teeth are subjected to edge cutting and covering at one time, the front half part is in an inverted trapezoid shape, and the rear half part is in a square shape; a neck is formed between the processing unit and the next processing unit, and the front end surface and the rear end surface are arc-shaped; punching a point on the rear half part of the processing unit to form a hemispherical boss at a second station; at a third station, the front half part of the processing unit is processed by cutting to form a pair of tooth parts of the Y-shaped zipper teeth; and at the fourth station, tooth embryos of the Y-shaped zipper teeth are clamped into the zipper cloth belt through a pressing hammer, and are cut off along the circular arc-shaped rear end face. The method has low cost, and the produced Y-shaped tooth has high horizontal tensile strength and single tooth displacement resistance, and no cutter mark is connected to the surface of the tooth waist.

Description

A kind of preparation method of slide fastener coupling element

Technical field

The present invention relates to zipper production method, particularly a kind of preparation method of slide fastener coupling element.

Background technology

Slide fastener coupling element has two kinds of Y type tooth and plain edition teeth.Existing Y type tooth must adopt the cross section to be Y type shaped wire, sandwiches zipper cloth belt via YG type tooth planter through cutting into slices, dash point; This chain tooth does not have the tool marks of connecing, and it is spherical that head can be processed into semicircle, so that the chain bending is soft, engagement is gently sliding; Itself and strap junction surface can be designed to Reasonable Shape, (such as, arrange a pilot pin), to improve flatwise tensile strength and single tooth displacement force, but Y type shaped wire is complex-shaped, and the required precision height is difficult to make, substantially lean on import in China, cost is high, and, YG type tooth planter mechanism complexity.

The flat wire rod that the plain edition tooth adopts the cross section to be rectangle, planting the tooth machined via metal, to make slide fastener monolateral.Existing plain edition tooth, the cost of raw material is significantly less than Y type shaped wire, metal is planted the simple in structure of tooth machine, but because the restriction of processing technology, the processing and the cutting direction of two sections stations are opposite, so, the surface of tooth waist portions is left and is significantly connect tool marks, can't eliminate in subsequent handling, can't overcome at present; Chain tooth head is the boss shape, and the surface is smooth inadequately; And itself and strap junction surface are subjected to the restriction of nose shape, can't form pilot pin.

Various countries generally adopt the preparation method of metallic bond tooth and the operation principle basically identical that the different metal of profile is planted the tooth machine thereof, all flat copper or aluminium alloy flat wire rod being planted the tooth machined via metal, to make slide fastener monolateral, as shown in Figure 1, by the patrix machine and the counterdie machine of continuous stepping mould, flat wire rod 1 is carried out towards point → cut triangle → crop → tooth bud to clamp into zipper cloth belt; Zipper cloth belt moves along the vertical direction that tooth bud advances.

Existing Y type tooth adopts the section bar of cross section complexity, the required precision height of raw material, manufacturing cost height; Though and plain edition tooth cost is low, the slide fastener anti-pulliing strength that it is made and single tooth displacement force aspect are relatively poor, and chain tooth exposed face connects tool marks.

The metal zip fastener of producing Y type tooth effect for the rectangle flat bar with the cross section is key subjects of the industry always, and the various countries technical staff has studied about 20 years for this reason.

Summary of the invention

The object of the present invention is to provide a kind of cross section of adopting to produce the preparation method of the metal slide fastener tooth of Y type tooth effect, go out Y type tooth with low-cost production for the rectangle flat bar.

The preparation method of a kind of slide fastener coupling element that technical scheme of the present invention provides is processed into Y type slide fastener coupling element by continuous stepping mould with flat wire rod, and its step comprises:

(1) at first station, the side of the flat wire rod of a machining cell to be cut bound edge handle, symmetry cuts out the outside line style of Y type slide fastener coupling element, and its front end face and rear end face are once cut bound edge and are shaped, and it is trapezoidal that first half is, latter half of being square; Form a neck between this machining cell and the next machining cell, described front end face and rear end face are circular arc; Like this, the surperficial integral cutting of tooth waist portions forms, and does not connect tool marks.

(2) at second station, to the latter half of some formation hemisphere face boss that dashes of above-mentioned machining cell;

(3),, form the tooth portion of a pair of Y type chain tooth to the processing of hitting of the first half of above-mentioned machining cell at the 3rd station;

(4), clamp into zipper cloth belt by the tooth bud of shingling hammer, and cut off along the rear end face of circular arc with Y type slide fastener coupling element at the 4th station.

As a kind of improvement of the inventive method, described step (2) is carried out before in step (1).

As another improvement of the inventive method, the processing of hitting of described step (3) also forms a pair of pilot pin in a pair of tooth portion inboard of Y type chain tooth.

As another improvement of the inventive method, the described point that dashes adopts upper cavity die and lower punch processing, and there is a projection on the base of described upper cavity die, and this projection is aimed at rear end face, so that the head boss shape that stamps out is more natural, attractive in appearance.

Advantage of the present invention is: the inventive method can adopt flat bar to produce the metal slide fastener tooth of Y type tooth effect, and the employing cross section is that ormolu, the aluminium alloy of rectangle is raw material, and cost reduces greatly; And, the Y type tooth anti-pulliing strength height of producing, single tooth resist displacement power height, its head forms the boss of semi-sphere, and the surface of tooth waist portions does not connect tool marks.

Description of drawings

The method schematic diagram of Fig. 1 flat wire rod making slide fastener coupling element for prior art adopts;

Fig. 2 is the preparation method schematic diagram of slide fastener coupling element of the present invention;

Fig. 3 is the another preparation method schematic diagram of slide fastener coupling element of the present invention;

Fig. 4 dashes the cutaway view of some station for the present invention.

The drawing explanation

1, flat wire rod 2, hemisphere face boss 3, tooth portion

4, pilot pin 5, shingling hammer 6, neck

7, projection 8, dash a some upper cavity die 9, dash a some lower punch push rod

10, dash the some punch

The specific embodiment

Below just specify technical scheme in conjunction with the accompanying drawings according to the inventive method:

Embodiment 1

As Fig. 2 and shown in Figure 4, adopting the cross section is that rectangular copper material is produced Y type tooth, and this metal slide fastener tooth making step is:

(1) at first station, the side of the flat wire rod 1 of a machining cell to be cut bound edge handle, symmetry cuts out the outside line style of Y type slide fastener coupling element, and its front end face and rear end face are once cut bound edge and are shaped, and it is trapezoidal that first half is, latter half of being square; Form a neck 6 between this machining cell and the next machining cell, described front end face and rear end face are circular arc; Like this, the surface of tooth waist portions does not connect tool marks.

(2) at second station, lead to overshoot point upper cavity die 8 and dash the latter half of of 10 pairs of above-mentioned machining cells of some punch towards a some formation hemisphere face boss 2, dash some punch 10 by controlling towards some lower punch push rod 9; There is a projection 7 on the base of described upper cavity die 8, and this projection 7 is aimed at the rear end face of machining cell;

(3) at the 3rd station, to the processing of hitting of the first half of above-mentioned machining cell, form the tooth portion 3 of a pair of Y type chain tooth, a pair of tooth portion 3 inboards also form a pair of pilot pin 4;

(4), clamp into zipper cloth belt by the tooth bud of shingling hammer 5, and cut off along the rear end face of circular arc with Y type slide fastener coupling element at the 4th station.

Embodiment 2

As shown in Figure 3, adopting the cross section is the ormolu production Y type tooth of rectangular rectangle, and this metal slide fastener tooth making step is:

(1) at first station, the latter half of point that dashes of the flat wire rod of a machining cell is formed hemisphere face boss 2, the described point that dashes adopts upper cavity die 8 and lower punch 10 processing, and there is a projection 7 on the base of described upper cavity die 8, and this projection 7 is aimed at rear end face;

(2) at second station, to above-mentioned machining cell side cut bound edge and handle, symmetry cuts out the outside line style of Y type slide fastener coupling element, its front end face and rear end face are once cut bound edge and are shaped, it is trapezoidal that first half is, latter half of being square; Form a neck 6 between this machining cell and the next machining cell, described front end face and rear end face are circular arc;

The inventive method can adopt flat bar to produce the metal slide fastener tooth of Y type tooth effect, and adopting the cross section is the raw material of rectangle, and cost reduces greatly; And, the Y type tooth anti-pulliing strength height of producing, single tooth resist displacement power height, the surface of tooth waist portions does not connect tool marks, and outward appearance is good.

Claims

1. A method for making a zipper element, wherein the flat wire is processed into a Y-shaped zipper element through a continuous stepping die, and the steps include:

In the first station, the side edge of the flat wire (1) of a processing unit is cut and hemmed, and the outer line shape of the Y-shaped zipper element is symmetrically cut out, and the front and rear ends are cut and hemmed at one time. , the front half is an inverted trapezoid, and the second half is square; a neck (6) is formed between the processing unit and the next processing unit, and the front end surface and the rear end surface are arc-shaped;

In the second station, a hemispherical boss (2) is formed on the rear half of the above-mentioned processing unit;

In the third station, the front half of the above-mentioned processing unit is centered to form a pair of teeth (3) of Y-shaped chain teeth; and

In the fourth station, clamp the tooth germ of the Y-shaped zipper element into the zipper tape through the pressing hammer (5), and cut off along the arc-shaped rear end face.

2. The manufacturing method of the zipper element according to claim 1, wherein the punching at the second station is performed before the edge cutting at the first station.

3. According to the manufacturing method of the zipper element according to claim 1 or 2, it is characterized in that, in the center-cutting process of the third station, a pair of tooth portions (3) of the Y-shaped element are formed inside a pair of Locating pin (4).

4. According to the manufacturing method of the zipper element according to claim 1 or 2, it is characterized in that the punching point is processed by an upper die (8) and a lower punch (10), and the upper die (8) There is a protrusion (7) on the bottom edge, and the protrusion (7) is aligned with the rear end face.