US3680604A - Apparatus for making a slide-fastener coupling coil - Google Patents

Apparatus for making a slide-fastener coupling coil Download PDF

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Publication number
US3680604A
US3680604A US71923A US3680604DA US3680604A US 3680604 A US3680604 A US 3680604A US 71923 A US71923 A US 71923A US 3680604D A US3680604D A US 3680604DA US 3680604 A US3680604 A US 3680604A
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US
United States
Prior art keywords
mandrel
downstream
axis
mechanisms
axes
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 - Lifetime
Application number
US71923A
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English (en)
Inventor
Alfons Frohlich
Franz Hochlehnert
Werner Rademacher
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Opti Holding AG
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Opti Holding AG
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Filing date
Publication date
Priority claimed from DE19691946702 external-priority patent/DE1946702C2/de
Application filed by Opti Holding AG filed Critical Opti Holding AG
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Publication of US3680604A publication Critical patent/US3680604A/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D5/00—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners
    • B29D5/06—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners the interlocking members being formed by continuous helix
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/814—Zipper

Definitions

  • An apparatus for makmg a sllde-fastener couphng 0011 PP 71,923 comprises a mandrel mounted on a support having a pair of portions with noncoincident, advantageously [30 ⁇ Foreign Application Priority Data parallel, axes. Mechanism is provided rotatable about each of the mechanisms for winding a synthetic-resin Sept.
  • the present invention relates to an apparatus for making a slide-fastener coupling element, particularly a coil from a synthetic-resin monofilament.
  • the monofilament In order to make such a coil the monofilament must be wound around a mandrel. To this end it must be fed to the mandrel with as little twist as possible and removed therefrom with as little deformation as possible. In addition, since the turns of the coil must be somewhat elongated, the mandrel must have a cross section resembling a flattened circle. Thus, it is also mandatory that this mandrel not rotate about its own axis.
  • the mandrel is simply fixed to a support at its upstream end, and the supply of monofilament is orbited around it. In this case the winding speed must be held low since the centripetal force developed by a large spool of, for example, nylon filament, is considerable.
  • the filament is fed axially toward the elongated mandrel, which must then be prevented from rotating by some indirect means.
  • the mandrel can be provided with an off-center weight to prevent its rotation, or it can be gripped magnetically. In both of these cases oscillations can build up in the mandrel, making for poor tolerances in the finished coil.
  • Another method of restraining the mandrel provides a planetary gear arrangement whereby the mandrel is fixed to a sun gear whose planet gear are driven in such a manner that the sun gear does not rotate.
  • This system has the disadvantage that it is extremely expensive in the realization, and that it is impossible to vary the tension of the monofilament about the mandrel by speeding up or slowing down the winding speed, since this will cause the mandrel to rotate.
  • Another object is to provide such an apparatus which overcomes the above-mentioned disadvantages.
  • the monofilament is fed axially toward the mandrel which isitself mounted on a support having a pair of portions with noncoincident axes.
  • the monofilament is fed toward and wound on the mandrel by a pair of mechanism each rotatable about one of the axes of the support.
  • the feature that the support comprises these two nonaligned portions makes it impossible for it to rotate, even through it is solely supported by bearings in two separate mechanisms rotating in the same sense at the same rate.
  • the two axes are parallel but offset from each other, so that the support is in efi'ect a crank.
  • mandrel is meant only to refer to the element around which the coil is wound, since the mandrel rod itself could be unitary with the support, could constitute one of the portions thereof, or could simply be mounted thereon.
  • the downstream mechanism i.e., that mechanism nearer the mandrel, is provided with means for maintaining constant the length of the path for the monofilament from the upstream mechanism to the mandrel. Since the two axes are offset, as the mechanisms rotate this path will change in length to bring about a possible disadvantageous stressing of the filament.
  • the means includes a body mounted in the downstream mechanism and having a central axis rotatable about the downstream axis.
  • This member is provided with an eccentric guide passage for the filament, and it is arranged so that the eccentric passage does not rotate about the bodys central axis, the eccentricity being dimensioned such that the variation in path length on rotation is fully compensated for.
  • the mandrel is mounted offset from the downstream portion to an extent sufficient to compensate for the path variations.
  • FIG. 1 is a side view of the apparatus according to the present invention.
  • FIG. 2 is a top view of the installation shown in FIG.
  • FIG. 3 is a detail of FIG. 2;
  • FIG. 4 is a detail of FIG. 1 in section
  • FIG. 5 is an end view of the detail of FIG. 4.
  • FIG. 6 is a view similar to FIG. 3 showing an alternative embodiment of the present invention.
  • the installation for making a coupling element has a supply I of a synthetic-resin monofilament 2, here Nylon, on tow spools 4 which can be rotatable about their axes 4a, but which need not be. Three more spools and filaments can be provided, if desired.
  • Unwinding devices 40 are provided and guide rollers 41 for leading the filaments 2 up to a feed arrangement 3 which comprises four rollers 20. Each filament is wound several times around two of the rollers 20 so that it is pulled 011 its spool 4 at a rate determined by the transmission 42 connected to a motor 21 serving as drive.
  • This transmission 42 is of the variable-speed type and is connected through belts 43 to the rollers 20 so that it can be adjusted to determine the winding tension as will seen below.
  • the whole apparatus is mounted on a common frame 13.
  • thermoplastic filaments 2 Downstream, that is, in the transport direction T, is a muffle 44 in which the thermoplastic filaments 2 are somewhat softened whence they each pass between a pair of toothed driven wheels or rollers 17 and 18 which positively engage the filaments 2 and form coupling heads 9 thereon. Subsequently the stamped filaments 2 are fed through a first feeding-winding mechanism 7 and then a second feeding-winding mechanism 8 where they are wound around a mandrel 6 at a rate determined by the feed speed determined by the transmission 42 and rotation rate of the two mechanisms 7 and 8 which are connected via timing belts 30 to the motor 21.
  • a coil 11 is thus formed which is engaged by a toothed wheel 10 downstream of the mandrel 6 and passed onto a heated drum 12 provided with serrated grooves in which the individual coil turns are received and thermally fixed. Thence the finished coils 11 are dropped into a container 45.
  • FIGS. 3 show the mechanisms 7 and8 in greater detail.
  • the mechanism 7 is rotatable about an axis B which is the longitudinal axis of a portion 5a of a mandrel support 5.11m other portion 5b of the mandrel support 5 has a longitudinal axis A offset from and parallel to the axis B and serving as the rotation axis for the downstream mechanism 8.
  • the two portions 5a and 5b are joined together by a central crank portion 14.
  • the mandrel 6 has a rounded elongated cross section, as shown in FIG. 5, with its long sides vertical. It is mounted on the portion 5b and is coaxial therewith. The spacing of the coupling heads 9 is such that they always find themselves on the short rounded up and down sides of the mandrel 6 as the filaments 2 are wound therearound.
  • the mechanism 7 comprises an element 46 journaled in abracket 47 secured to the machine frame 13.
  • the mechanism 8 is basically a blocklike cylindrical element 35 journaled in a support 34 also mounted on the frame 13. Both elements 35 and 46 are connected to the motor'2l by timing belts 30 so that they rotate in the same sense at exactly the same rates.
  • Upstream of the mechanism 7 is an arrangement 27 for holding av spool28 carrying a supply of filler cord 25.
  • This cord 25 is fed ofi' through a unwinding mechanes 29 whence it passes through a passage 26 formed through the entire length of the support 5, so that the ,cord 25 exits at the mandrel 6 where the filament 2 is wound around it.
  • the spool 28 is gripped between two rubber cones 31 and 32.
  • the cone 32 is mounted on the upstream end of the support 5, as is the unwinding arm 29.
  • the cone 31 is mounted on a shaft 54 journaled in an element 49 in turn journaled in a bracket 52 on the machine frame 13.
  • a spring 55 urges the cone 31 toward the cone 32 to grip the spool 28.
  • the element 49 is connected to the motor 21 via a timing belt 30 so that it also turns at the same rate and in the same sense as the mechanisms 7 and 8.
  • the tension of the filter cord 25 is determined by friction of the spool 28 on the cone 32.
  • Elements 49 and 46 are formed with respective flanges 56 and 48 provided with 'in-line holes 50 through which the filament 2 is guided.
  • the filament 2 passes the bracket 52 by passing through a'bore 51 in the element'49 and passes the bracket 47 by passing through a bore 53 in the element 46. In this manner, the length of the path for the filament 2 from spool 4 to a point 15 where the filament 2 enters the bore 53 is always essentially the same, even when the motor 21 is rotating the mechanisms 7 and 8 and the element 49.
  • the cylindrical element 35 which is rotatable about the axis A, rotatably mounts a rod '22 having a central axis C parallel to and offset from the tires A and B.
  • This rod 22 further has a throughgoing axial bore '23 which has an axis D ofi'set from" the axis 'C.
  • Both the portion 5b and the rod 22 are provided with identical gears 24 interconnected by a small pinion 240 so that," as the element 35 rotates about the axis 'A, the axis C of the rod 22 describes a circular orbit C' concentric with the axis A and the oficenter axis D describes a circular orbit D' to the left in FIG.
  • FIG. 6 shows another embodiment wherein the filament 2 simply passes through an axial bore 23' inthe element 35. But here a cranklike mandrel 6 is provided which has a portion 60 having an axis E parallel to and ofiset from the axis A by a distance equal to the distance between axes A and B, but loffset therefrom. In this arrangement, as path 37 lengthens, path 38' shortens, and vice versa. Thus, the overall path length remains constant.
  • An apparatus for making a slide-fastener coupling coil comprising:
  • a body mounted in said element for rotation about a central axis parallel to said downstreammechanism axis, said body being formed with a guide passage offset from said central axis;
  • one of said gears being mounted on the downstream portion of said support and the other of said gears being mounted on said body.
  • said supply means includes means upstream of said mechanisms positively engaging said filament for feeding same at a predetermined rate toward said mandrel, said mechanisms rotating at a rate determined by said drive means, said apparatus further comprising means operatively connected to said drive means for varying one of said rates relative to the other of said rates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Slide Fasteners (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulding By Coating Moulds (AREA)
  • Wire Processing (AREA)
US71923A 1969-09-16 1970-09-14 Apparatus for making a slide-fastener coupling coil Expired - Lifetime US3680604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691946702 DE1946702C2 (de) 1969-09-16 Vorrichtung zum Wickeln einer fortlaufenden, schraubenförmig ausgebildeten aus einem Kunststoffprofilstrang bestehenden Gliederreihe für einen Reißverschluß

Publications (1)

Publication Number Publication Date
US3680604A true US3680604A (en) 1972-08-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
US71923A Expired - Lifetime US3680604A (en) 1969-09-16 1970-09-14 Apparatus for making a slide-fastener coupling coil

Country Status (9)

Country Link
US (1) US3680604A (de)
JP (1) JPS4840035B1 (de)
CA (1) CA926596A (de)
CS (1) CS151045B2 (de)
FR (1) FR2061386A5 (de)
GB (1) GB1315021A (de)
RO (1) RO85146B (de)
YU (1) YU33616B (de)
ZA (1) ZA706239B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201035A (en) * 1977-08-11 1980-05-06 John Nolan Design Limited Winding machine
US4325184A (en) * 1977-12-30 1982-04-20 Yoshida Kogyo K.K. Apparatus for manufacturing coiled coupling elements for slide fasteners
US4617789A (en) * 1985-04-01 1986-10-21 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for fabricating multi-strand superconducting cable
US4657500A (en) * 1985-04-15 1987-04-14 Yoshida Kogyo K. K. Apparatus for forming a row of zigzag coupling elements for slide fasteners
US5147662A (en) * 1989-05-08 1992-09-15 Yazaki Corporation Twisted wire manufacturing apparatus and concentric twisted wire manufacturing machine
US6302676B1 (en) * 1998-09-22 2001-10-16 Ykk Corporation Apparatus for manufacturing slide fastener continuous element row
CN109008090A (zh) * 2017-06-12 2018-12-18 Ykk株式会社 拉链链牙列成形装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014196024A1 (ja) * 2013-06-04 2014-12-11 Ykk株式会社 スライドファスナー用連続エレメント列成型装置の芯紐供給装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071917A (en) * 1961-05-01 1963-01-08 Mousanto Chemical Company Apparatus for texturing yarn
US3121256A (en) * 1961-12-19 1964-02-18 William Resinol Apparatus for forming continuous plastic curls
US3137037A (en) * 1959-03-12 1964-06-16 Walter E Heilmann Apparatus for forming a helical slide fastener
US3353217A (en) * 1966-04-15 1967-11-21 Ideal Fastener Corp Forming apparatus for helical slide fastener elements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3137037A (en) * 1959-03-12 1964-06-16 Walter E Heilmann Apparatus for forming a helical slide fastener
US3071917A (en) * 1961-05-01 1963-01-08 Mousanto Chemical Company Apparatus for texturing yarn
US3121256A (en) * 1961-12-19 1964-02-18 William Resinol Apparatus for forming continuous plastic curls
US3353217A (en) * 1966-04-15 1967-11-21 Ideal Fastener Corp Forming apparatus for helical slide fastener elements

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201035A (en) * 1977-08-11 1980-05-06 John Nolan Design Limited Winding machine
US4325184A (en) * 1977-12-30 1982-04-20 Yoshida Kogyo K.K. Apparatus for manufacturing coiled coupling elements for slide fasteners
US4617789A (en) * 1985-04-01 1986-10-21 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for fabricating multi-strand superconducting cable
US4657500A (en) * 1985-04-15 1987-04-14 Yoshida Kogyo K. K. Apparatus for forming a row of zigzag coupling elements for slide fasteners
US5147662A (en) * 1989-05-08 1992-09-15 Yazaki Corporation Twisted wire manufacturing apparatus and concentric twisted wire manufacturing machine
US6302676B1 (en) * 1998-09-22 2001-10-16 Ykk Corporation Apparatus for manufacturing slide fastener continuous element row
CN109008090A (zh) * 2017-06-12 2018-12-18 Ykk株式会社 拉链链牙列成形装置
CN109008090B (zh) * 2017-06-12 2021-11-26 Ykk株式会社 拉链链牙列成形装置

Also Published As

Publication number Publication date
ZA706239B (en) 1971-06-30
CS151045B2 (de) 1973-09-17
FR2061386A5 (de) 1971-06-18
YU33616B (en) 1977-10-31
GB1315021A (en) 1973-04-26
DE1946702B1 (de) 1971-03-25
RO85146B (ro) 1984-11-30
CA926596A (en) 1973-05-22
YU221270A (en) 1977-04-30
RO85146A (ro) 1984-10-31
JPS4840035B1 (de) 1973-11-28

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