EP0064764B1 - Method of and apparatus for manufacturing slide fastener coupling elements - Google Patents
Method of and apparatus for manufacturing slide fastener coupling elements Download PDFInfo
- Publication number
- EP0064764B1 EP0064764B1 EP19820104079 EP82104079A EP0064764B1 EP 0064764 B1 EP0064764 B1 EP 0064764B1 EP 19820104079 EP19820104079 EP 19820104079 EP 82104079 A EP82104079 A EP 82104079A EP 0064764 B1 EP0064764 B1 EP 0064764B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling element
- rod
- forming
- ram
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000008878 coupling Effects 0.000 title claims description 95
- 238000010168 coupling process Methods 0.000 title claims description 95
- 238000005859 coupling reaction Methods 0.000 title claims description 95
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000000034 method Methods 0.000 title claims description 10
- 238000005520 cutting process Methods 0.000 claims description 71
- 239000002184 metal Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/02—Slide fasteners with a series of separate interlocking members secured to each stringer tape
- A44B19/04—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers
- A44B19/06—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers with substantially rectangular members having interlocking projections and pieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/46—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples
- B21D53/50—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples metal slide-fastener parts
- B21D53/52—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples metal slide-fastener parts fastener elements; Attaching such elements so far as this procedure is combined with the process for making the elements
Definitions
- the present invention relates to the production of slide fastener stringers, and more particularly to a method of and apparatus for manufacturing slide fastener coupling elements of metal suitable for use with a two-way slide fastener as claimed in the precharacterising parts of claim 1, 5.
- Such a method and apparatus are known from US-A-2804677.
- a two-way slide fastener has a pair of oppositely disposed sliders and hence can be opened from either end.
- To facilitate smooth movement of the sliders in either direction it is required to chamfer the coupling heads of metallic coupling elements on one face of each coupling head.
- Such chamfering is hitherto performed by means of a separate, small-sized cutting tool, which not only has a short endurance, but also often causes production of burrs and chips. Further, with the small-sized cutting tool, it is difficult to produce adequate quality of coupling elements.
- a method provided of manufacturing coupling elements for a slide fastener comprising the steps of: providing a rod of metal of a generally Y-shaped cross section having a base, as a prospective coupling head, and a pair of legs divergently extending from the base; feeding the rod stepwise in a longitudinal direction; transversely slicing the rod into a plurality of coupling element blanks in timed relation to said stepwise feeding; placing the coupling element blanks, one at a time, in a coupling-head forming station away from the rod in a direction perpendicular to said longitudinal direction; and at the coupling-head forming station, forming the base of each coupling element blank into a final coupling head of one coupling element which head has a projection from one face and a coacting socket in the other face; characterized in: that said method comprises the further step of forming a chamfered portion on the base of the rod every time each coupling element blank is sliced off from the rod and
- an apparatus for manufacturing coupling elements for a slide fastener from a rod of metal of a generally Y-shaped cross-section having a base, as a prospective coupling head, and a pair of legs divergently extending from the base comprising: means for feeding the rod in a longitudinal direction in regular steps of a predetermined distance equal to the thickness of one coupling element; a fixed cutting punch having a cutting edge; a reciprocating ram movable relatively to said cutting punch perpendicularly to said longitudinal direction; a cutting die carried by said ram and having a hole for the passage of the rod, said cutting die being movable, in response to the reciprocating movement of said ram, across a cutting edge of said cutting punch for transversely slicing the rod into a plurality of coupling element blanks, one on each stroke of said ram; a forming die carried by said ram and movable, in response to the reciprocating movement of said ram, toward and away from said cutting edge of
- the present invention seeks to provide a method of manufacturing high quality metallic coupling elements suitable for two-way slide fasteners.
- the invention also seeks to provide a method of manufacturing accurate coupling elements, for two-way slide fasteners, with improved rate of production.
- the invention further seeks to provide an apparatus for carrying out the method described above, which not only requires no additional parts, but also has an improved endurance.
- the apparatus 1 generally comprises a pair of rollers 7, 8 for feeding the rod 4 stepwise upwardly, i.e. in a longitudinal direction indicated by an arrow 9, in regular steps of a distance h ( Figure 2) equal to the thickness of a single coupling element 2', a coacting cutting die and punch 10, 11 for transversely slicing the rod 4 into a plurality of coupling element blanks 2 (only one shown in Figures 3 and 4) in timed relation to the stepwise feeding of the rod 4, and a coacting forming die and punch 12, 13 for forming a slice of coupling element blank 2 into a final coupling element 2'.
- h Figure 2
- the ram 15 has a horizontal channel 17 in which a projection 18 of the cutting .punch 11 is slidably received and which leads to the upper end of the hole 16 of the cutting die 10.
- the cutting die 10 is movable back and forth, in response to the reciprocating movement of the ram 15, across the cutting edge 14 of the cutting punch 11 for transversely slicing the rod 4 into the individual coupling element blanks 2 one on each backward stroke of the movement of the ram 15.
- the apparatus 1 also includes a means, disposed on the projection 18 of the cutting punch 11, for forming a chamfered portion 20 on the base 5 of the rod 4 at the end of each backward stroke of the ram 15, so that each coupling element blank 2 has the chamfereed base 5' ( Figures 3 and 4).
- the chamfered-portion forming means comprises a chamfering surface 21 composed of a pair of first and second beveled surfaces 21a, 21b for being forced against the base 5 of the rod 4 at the end of each backward stroke of the ram 15.
- the chamfered portion 20 on the base 5 of the rod 4 is composed of a pair of third and fourth beveled surfaces 20a, 20b corresponding to the first and second beveled surfaces 21a, 21b on the cutting punch 11.
- the third beveled surface 20a extends at an angle a with respect to a vertical outer side surface 23 of the rod 4
- the second beveled surface 20b extends at an angle (3 with respect to a horizontal upper end surface 4a of the rod 4.
- the chamfering surface 21 is disposed at a corner defined by the projection 18 and a horizontal surface 24.
- the horizontal surface 24 is disposed at a level above the bottom surface 25 of the projection 18 by a distance H ( Figure 2).
- the upper horizontal surface 26 of the cutting die 10, which includes a cutting edge 27, is disposed at a level above the bed 17a of the channel 17 of the ram 15 by the same distance H.
- a chamfered portion is formed on the base of the rod in order that the base of the individual coupling element blank will have had such chamfered portion before the formation of a projection and a coacting socket, and for this reason, it is possible to form a chamfered portion accurately and reliably, thus producing high quality of coupling elements suitable for a two-way slide fastener ( Figure 12).
- the slicing step and the placing step and the chamfered-portion forming step are performed in sequence on only a single stroke of relative movement of the cutting die and punch, it is possible to manufacture accurate coupling elements with improved rate of production.
- Figures 6 through 10 show a modified apparatus 40 according to a second embodiment similar to the apparatus 1 of Figures 1 through 5, and the only difference therefrom is as follows.
- the chamfering surface 21 on the projection 18 of the cutting punch 11 is disposed below a corner 41 (described below) by a distance h ( Figure 7) equal to the thickness of a single coupling element 2', the corner 41 being defined by the projection .18 and the horizontal surface 24.
- the chamfering surface 21 comprises a beveled surface of a nose 42 extending forwardly from the projection 18.
- the forming punch 13 is lowered to press the coupling element blank 2 at the chamfered base 5' to thereby form the latter into a final coupling head 5" ( Figures 7,10,13 and 14) having a projection 30 from the lower face and a coating socket 31 in the upper face at such a position that the beveled surface 20 is disposed around the socket 31.
- the coupling element blank 2 is retained in the recess 28 by the presser 32 lowered together with the forming punch 13.
- a complete coupling element 2' has been produced ( Figures 7 and 10).
- a beveled surface 45 corresponding to the auxiliary chamfering surface 43 is formed on the base 5 of the rod 4.
- the beveled surface 45 is disposed below the beveled surface 20 by the distance h equal to the thickness of one coupling elemeht 2' and hence facilitates the formation of the beveled surface 20 on the next backward stroke of the ram 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Slide Fasteners (AREA)
Description
- The present invention relates to the production of slide fastener stringers, and more particularly to a method of and apparatus for manufacturing slide fastener coupling elements of metal suitable for use with a two-way slide fastener as claimed in the precharacterising parts of
claim - A two-way slide fastener has a pair of oppositely disposed sliders and hence can be opened from either end. To facilitate smooth movement of the sliders in either direction, it is required to chamfer the coupling heads of metallic coupling elements on one face of each coupling head. Such chamfering is hitherto performed by means of a separate, small-sized cutting tool, which not only has a short endurance, but also often causes production of burrs and chips. Further, with the small-sized cutting tool, it is difficult to produce adequate quality of coupling elements.
- According to one aspect of the invention, there is a method provided of manufacturing coupling elements for a slide fastener, comprising the steps of: providing a rod of metal of a generally Y-shaped cross section having a base, as a prospective coupling head, and a pair of legs divergently extending from the base; feeding the rod stepwise in a longitudinal direction; transversely slicing the rod into a plurality of coupling element blanks in timed relation to said stepwise feeding; placing the coupling element blanks, one at a time, in a coupling-head forming station away from the rod in a direction perpendicular to said longitudinal direction; and at the coupling-head forming station, forming the base of each coupling element blank into a final coupling head of one coupling element which head has a projection from one face and a coacting socket in the other face; characterized in: that said method comprises the further step of forming a chamfered portion on the base of the rod every time each coupling element blank is sliced off from the rod and then placed in the coupling-head forming station, each coupling element blank thus having the chamfered base; and that the first-named forming step is effected in such a manner that the chamfered portion is disposed around the socket.
- According to another aspect of the invention, there is provided an apparatus for manufacturing coupling elements for a slide fastener from a rod of metal of a generally Y-shaped cross-section having a base, as a prospective coupling head, and a pair of legs divergently extending from the base, said apparatus comprising: means for feeding the rod in a longitudinal direction in regular steps of a predetermined distance equal to the thickness of one coupling element; a fixed cutting punch having a cutting edge; a reciprocating ram movable relatively to said cutting punch perpendicularly to said longitudinal direction; a cutting die carried by said ram and having a hole for the passage of the rod, said cutting die being movable, in response to the reciprocating movement of said ram, across a cutting edge of said cutting punch for transversely slicing the rod into a plurality of coupling element blanks, one on each stroke of said ram; a forming die carried by said ram and movable, in response to the reciprocating movement of said ram, toward and away from said cutting edge of said cutting punch at one end of each stroke of said ram; and a forming punch movable toward said forming die for forming the base of each coupling element blank into a final coupling head of one coupling element which head has a projection from one face and a coacting socket in the other face; characterized in: that said fixed cutting punch has a projection, said ram having a channel in which said projection of said cutting punch is slidably received and which communicates with said hole at one end thereof; means disposed on said projection of said cutting punch, for forming a chamfered portion on the base of the rod at one end of each stroke of said ram, each coupling element blank thus having the chamfered base; and that said forming die and punch are effective to form the socket in such a manner that the chamfered portion is disposed around the socket.
- The present invention seeks to provide a method of manufacturing high quality metallic coupling elements suitable for two-way slide fasteners.
- The invention also seeks to provide a method of manufacturing accurate coupling elements, for two-way slide fasteners, with improved rate of production.
- The invention further seeks to provide an apparatus for carrying out the method described above, which not only requires no additional parts, but also has an improved endurance.
- Other objects and advantages will appear from the following description of an example of the invention, when considered in connection with the accompanying drawings, and the novel features will be particularly pointed out in the appended claims.
- Figure 1 is a fragmentary perspective view of an apparatus according to a first embodiment of the present invention.
- Figure 2 is a longitudinal cross-section view taken along line II-II of Figure 1, showing the parts in a starting position for the manufacture of a coupling element;
- Figures 3 through 5 are cross-sectional views similar to Figure 2, each showing a different stage of the manufacture;
- Figure 6 is a fragmentary perspective view similar to Figure 1, but showing a second embodiment, with parts broken away;
- Figure 7 is a longitudinal cross-sectional view taken along line VII-VII of Figure 6, showing the parts in a starting position for the manufacture of a coupling element;
- Figures 8 through 10 are similar to Figure 7, each showing a different stage of the manufacture;
- Figure 11 is a cross-sectional view similar to Figure 9, but showing a third embodiment, with parts omitted;
- Figure 12 is a fragmentary plan view of a two-way slide fastener having coupling elements manufactured according to the present invention; and
- Figures 13 and 14 are enlarged perspective views of different kinds of coupling elements manufactured according to the present invention and suitable for use with a two-way slide fastener.
- Like reference numerals designate similar parts throughout the several views.
- Figure 1 shows an
apparatus 1 for manufacturing coupling elements 2', for a slide fastener and more particularly for a two-way slide fastener 3 (Figure 12), from arod 4 of metal of a generally Y-shaped cross-section having abase 5, as aprospective coupling head 5" (Figures 2, 5,13 and 14), and a pair oflegs base 5. - The
apparatus 1 generally comprises a pair ofrollers 7, 8 for feeding therod 4 stepwise upwardly, i.e. in a longitudinal direction indicated by an arrow 9, in regular steps of a distance h (Figure 2) equal to the thickness of a single coupling element 2', a coacting cutting die andpunch rod 4 into a plurality of coupling element blanks 2 (only one shown in Figures 3 and 4) in timed relation to the stepwise feeding of therod 4, and a coacting forming die andpunch - The
cutting punch 11, which is stationary, has at its forward end acutting edge 14. Thecutting die 10, which is carried by areciprocating ram 15 at its forward end, has avertical hole 16 for the passage of therod 4. Theram 15 has ahorizontal channel 17 in which aprojection 18 of the cutting .punch 11 is slidably received and which leads to the upper end of thehole 16 of thecutting die 10. Thus thecutting die 10 is movable back and forth, in response to the reciprocating movement of theram 15, across thecutting edge 14 of thecutting punch 11 for transversely slicing therod 4 into the individual coupling element blanks 2 one on each backward stroke of the movement of theram 15. - The
apparatus 1 also includes a means, disposed on theprojection 18 of thecutting punch 11, for forming achamfered portion 20 on thebase 5 of therod 4 at the end of each backward stroke of theram 15, so that each coupling element blank 2 has the chamfereed base 5' (Figures 3 and 4). The chamfered-portion forming means comprises achamfering surface 21 composed of a pair of first and secondbeveled surfaces base 5 of therod 4 at the end of each backward stroke of theram 15. Thus thechamfered portion 20 on thebase 5 of therod 4 is composed of a pair of third and fourthbeveled surfaces beveled surfaces cutting punch 11. As shown in Figure 4, the thirdbeveled surface 20a extends at an angle a with respect to a verticalouter side surface 23 of therod 4, while the secondbeveled surface 20b extends at an angle (3 with respect to a horizontalupper end surface 4a of therod 4. - The
chamfering surface 21 is disposed at a corner defined by theprojection 18 and ahorizontal surface 24. Thehorizontal surface 24 is disposed at a level above thebottom surface 25 of theprojection 18 by a distance H (Figure 2). The upperhorizontal surface 26 of thecutting die 10, which includes acutting edge 27, is disposed at a level above thebed 17a of thechannel 17 of theram 15 by the same distance H. Thus as theprojection 18 of thecutting punch 11 slides on thebed 17a of thechannel 17 of theram 15, thehorizontal surface 24 of thecutting punch 11 slides on the upperhorizontal surface 26 of thecutting die 10, during which time thecutting edges punch - The forming die 12, contiguous to the
cutting die 10, is carried by theram 15 and is movable, in response to the reciprocating movement of theram 15, toward and away from thecutting edge 14 of thecutting punch 11 for receiving one coupling element blank 2 in a couplinghead forming recess 28 at the end of each backward stroke of the movement of theram 15. - .At the end of backward stroke of the ram 15 (Figures 4 and 5), the forming
recess 28 is in vertical alignment with the formingpunch 13 which is movable vertically toward and away from therecess 28, i.e. in directions indicated byarrows 36, 37 (Figure 1). As the formingpunch 13 is lowered to press the coupling element blank 2 at the chamfered base 5', the latter is formed into afinal coupling head 5" (Figures 2, 5, 13 and 14) having aprojection 30 from the lower face and a coactingsocket 31 in the upper face at such a position that thebeveled surfaces socket 31. At that time, the coupling element blank 2 is retained in therecess 28 by apresser 32 lowered together with the formingpunch 13. Thus a complete coupling element 2' has been produced (Figures 2 and 5). - At the end of forward stroke of the ram 15 (Figures 1 and 2), a freshly completed coupling element 21' is located adjacent to a slide
fastener stringer tape 33 with thelegs beaded tape edge 34. A pair ofpressing levers 35, 35 (Figure 1) is moved toward each other to clinch theopposite legs beaded edge 34 of thetape 33, which is fed upwardly in steps of a predetermined distance equal to the element-to-element pitch. - In operation, when the
ram 15 is moved backwardly, i.e. leftwardly in Figure 2, thecutting die 10 is moved in the same direction to force therod 4 to move across thecutting edge 14 of thefixed cutting punch 11, whereby the upper end portion of therod 4 which projects out of thehole 16 is sliced off into a coupling element blank 2 (Figure 3). Therod 4 is fed stepwise upwardly so that it projects from thecutting edge 27 of thecutting die 10 by a length h (Figure 2) at a time in order that the sliced coupling element blank 2 will have a thickness equal to the length h. - With continued backward movement of the
ram 15, the sliced coupling element blank 2 slides on the horizontalupper surface 26 of thecutting die 10 and then on the horizontalupper surface 12a of the formingdie 12, as shown in Figure 3, until the coupling-head forming recess 28 is vertically aligned with both the sliced coupling element blank 2 and the forming punch 13 (Figure 4). During that time therod 4 is moved leftwardly and, at the end of the backward stroke of theram 15, therod 4 is forced, at portions adjacent to the freshly cut end, against thechamfering surface 21 on theprojection 18 of thecutting punch 11. Thus a pair ofbeveled surfaces beveled surfaces chamfering surface 21 has been formed on thebase 5 of therod 4 so that a succeeding coupling element blank 2 will have the chamfered base 5'. The preceding coupling element blank 2 has been provided at the base 5' with the same chamferedportion 21 in the same manner. - The forming
punch 13 is lowered to press the coupling element blank 2 at the chamfered base 5' to thereby form the latter into afinal coupling head 5" (Figures 2, 5, 13 and 14) having aprojection 30 from the lower face and a coactingsocket 31 in the upper face at such a position that thebeveled surfaces socket 31. At that time the coupling element blank 2 is retained in therecess 28 by thepresser 32 lowered together with the formingpunch 13. Thus a complete coupling element 2' has been produced (Figures 2 and 5). Then, the formingpunch 13 and thepresser 32 are retracted upwardly and, at the same time, theram 15 is moved forwardly from the retracted position (Figures 4 and 5) to the advanced position (Figure 2) in which theopposite legs recess 28 are disposed astride thebeaded edge 34 of thestringer tape 33. - Finally, theopposite legs pressing levers beaded edge 34 of thetape 33 which is held at rest between intermittent movements thereof. - According to the present invention, a chamfered portion is formed on the base of the rod in order that the base of the individual coupling element blank will have had such chamfered portion before the formation of a projection and a coacting socket, and for this reason, it is possible to form a chamfered portion accurately and reliably, thus producing high quality of coupling elements suitable for a two-way slide fastener (Figure 12).
- Since the slicing step and the placing step and the chamfered-portion forming step are performed in sequence on only a single stroke of relative movement of the cutting die and punch, it is possible to manufacture accurate coupling elements with improved rate of production.
- Further, the
apparatus 1 is very simple in construction and hence can be obtained from the conventional apparatus by providing the cutting die with a horizontal channel behind the vertical hole and by providing the cutting punch with a chamfering surface, which requires no complicated machining or added parts. - Figures 6 through 10 show a modified apparatus 40 according to a second embodiment similar to the
apparatus 1 of Figures 1 through 5, and the only difference therefrom is as follows. Thechamfering surface 21 on theprojection 18 of thecutting punch 11 is disposed below a corner 41 (described below) by a distance h (Figure 7) equal to the thickness of a single coupling element 2', thecorner 41 being defined by the projection .18 and thehorizontal surface 24. Thechamfering surface 21 comprises a beveled surface of anose 42 extending forwardly from theprojection 18. - When the
ram 15 is moved backwardly, i.e. leftwardly in Figure 7, thecutting die 10 is moved in the same direction to force therod 4 to move across thecutting edge 14 of the fixedcutting punch 11, whereby the upper end portion of therod 4 which projects out of thehole 16 is sliced off into a coupling element blank 2 (Figure 8). Therod 4 is fed stepwise upwardly so that it projects from thecutting edge 27 of thecutting die 10 by a length h (Figure 7) at a time in order that the sliced coupling element blank 2 will have a thickness equal to the length h. - With continued backward movement of the ram, the sliced
coupling element 2 slides on the horizontalupper surface 36 of the formingdie 12, as shown in Figure 8, until the couplinghead forming recess 28 is vertically aligned with both the sliced coupling element blank 2 and the forming punch 13 (Figure 9). During that time the rod is moved leftwardly and, at the end of the backward stroke of theram 15, therod 4 is forced, at a portion below the freshly cut end, against thenose 42 on theprojection 18 of thecutting punch 11. Thenose 42 bites into thebase 5 of therod 4. Thus abeveled surface 20 corresponding to thechamfering surface 21 has been formed on thebase 5 of therod 4 so that next to next coupling element blank 2 will have the chamfered base 5'. The preceding coupling element blank 2 had been provided at the base 5' with the same chamferedportion 21 in the same manner. The next coupling element blank 2 will have the chamferedportion 21 which had been formed on the previous backward stroke of theram 15. - The forming
punch 13 is lowered to press the coupling element blank 2 at the chamfered base 5' to thereby form the latter into afinal coupling head 5" (Figures 7,10,13 and 14) having aprojection 30 from the lower face and acoating socket 31 in the upper face at such a position that thebeveled surface 20 is disposed around thesocket 31. At that time the coupling element blank 2 is retained in therecess 28 by thepresser 32 lowered together with the formingpunch 13. Thus a complete coupling element 2' has been produced (Figures 7 and 10). Then, the formingpunch 13 and thepresser 32 are retracted upwardly and, at the same time, theram 15 is moved forwardly from the retracted position (Figures 9 and 10) to the advanced position (Figures 7) in which theopposite legs recess 28 are disposed astride thebeaded edge 34 of thestringer tape 33. - Finally, the
opposite legs pressing levers beaded edge 34 of thetape 33 which is held at rest between intermittent movements thereof. - Figure 11 is a fragmentary cross-sectional view showing a third embodiment similar to the embodiment of Figures 6 through 10, and the only difference therefrom is that the chamfered-portion forming means further includes an
auxiliary chamfering surface 43 disposed below thechamfering surface 21 by a distance h (Figure 2) equal to the thickness of one coupling element. Theauxiliary chamfering surface 43 comprises a beveled surface of asmall nose 44. Thenose 44 bites into thebase 5 of therod 4 when the latter is forced against theprojections 18 of the cuttingpunch 11 at the end of backward stroke of theram 15. Thus in addition to thebeveled surface 20 corresponding to thechamfering surface 21, abeveled surface 45 corresponding to theauxiliary chamfering surface 43 is formed on thebase 5 of therod 4. Thebeveled surface 45 is disposed below thebeveled surface 20 by the distance h equal to the thickness of one coupling elemeht 2' and hence facilitates the formation of thebeveled surface 20 on the next backward stroke of theram 15.
Claims (9)
of said cutting punch (11) by a distance equal to n times the thickness of one coupling element (2'), where n represents a natural number.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7200481A JPS57187134A (en) | 1981-05-13 | 1981-05-13 | Molding method and device for tooth for slide fastener |
JP72004/81 | 1981-05-13 | ||
JP56215060A JPS58116946A (en) | 1981-12-29 | 1981-12-29 | Interlocking teeth forming device for slide fastener |
JP215060/81 | 1981-12-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0064764A2 EP0064764A2 (en) | 1982-11-17 |
EP0064764A3 EP0064764A3 (en) | 1983-07-20 |
EP0064764B1 true EP0064764B1 (en) | 1985-08-28 |
Family
ID=26413131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19820104079 Expired EP0064764B1 (en) | 1981-05-13 | 1982-05-11 | Method of and apparatus for manufacturing slide fastener coupling elements |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0064764B1 (en) |
AU (1) | AU536108B2 (en) |
BR (1) | BR8202760A (en) |
DE (2) | DE64764T1 (en) |
HK (1) | HK62188A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0122505Y2 (en) * | 1984-09-14 | 1989-07-05 | ||
JP2803739B2 (en) * | 1993-01-29 | 1998-09-24 | ワイケイケイ株式会社 | Working teeth and method of forming teeth for slide fastener |
JP3355041B2 (en) * | 1994-08-24 | 2002-12-09 | ワイケイケイ株式会社 | Service teeth for slide fasteners and method and apparatus for forming the same |
JP4508909B2 (en) * | 2005-03-09 | 2010-07-21 | Ykk株式会社 | Fastener stringer continuous manufacturing equipment |
CN101496663B (en) * | 2008-01-28 | 2011-07-20 | 福建浔兴拉链科技股份有限公司 | Slide fastener tooth planting mechanism and slide fastener tooth planter using the tooth planting mechanism |
WO2009128136A1 (en) | 2008-04-14 | 2009-10-22 | Ykk株式会社 | Metallic one-side teeth and two-way slide fastener |
WO2017191688A1 (en) * | 2016-05-06 | 2017-11-09 | Ykk株式会社 | Fastener element, manufacturing device for fastener element, and manufacturing method for fastener element |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734546A (en) * | 1956-02-14 | Firing | ||
US2141200A (en) * | 1935-09-03 | 1938-12-27 | Talon Inc | Machine for making fastener stringers |
US2804677A (en) * | 1950-11-17 | 1957-09-03 | Talon Inc | Machine for making slide fastener stringers |
US2989803A (en) * | 1957-03-01 | 1961-06-27 | Walter V Chery | Method of making slide fastener elements |
-
1982
- 1982-05-03 AU AU83200/82A patent/AU536108B2/en not_active Ceased
- 1982-05-11 EP EP19820104079 patent/EP0064764B1/en not_active Expired
- 1982-05-11 DE DE1982104079 patent/DE64764T1/en active Pending
- 1982-05-11 DE DE8282104079T patent/DE3265787D1/en not_active Expired
- 1982-05-13 BR BR8202760A patent/BR8202760A/en not_active IP Right Cessation
-
1988
- 1988-08-18 HK HK62188A patent/HK62188A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BR8202760A (en) | 1983-04-19 |
AU536108B2 (en) | 1984-04-19 |
DE64764T1 (en) | 1984-02-02 |
DE3265787D1 (en) | 1985-10-03 |
AU8320082A (en) | 1982-11-18 |
HK62188A (en) | 1988-08-26 |
EP0064764A3 (en) | 1983-07-20 |
EP0064764A2 (en) | 1982-11-17 |
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