CA1144322A - Method and apparatus for dispensing fasteners - Google Patents
Method and apparatus for dispensing fastenersInfo
- Publication number
- CA1144322A CA1144322A CA000377621A CA377621A CA1144322A CA 1144322 A CA1144322 A CA 1144322A CA 000377621 A CA000377621 A CA 000377621A CA 377621 A CA377621 A CA 377621A CA 1144322 A CA1144322 A CA 1144322A
- Authority
- CA
- Canada
- Prior art keywords
- bar
- needle
- fastener
- bars
- fasteners
- 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
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/08—Fastening or securing by means not forming part of the material of the label itself
- G09F3/14—Fastening or securing by means not forming part of the material of the label itself by strings, straps, chains, or wires
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
- A41H37/00—Machines, appliances or methods for setting fastener-elements on garments
- A41H37/005—Hand implements
- A41H37/008—Hand implements provided with a needle tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65C—LABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
- B65C7/00—Affixing tags
- B65C7/003—Affixing tags using paddle-shaped plastic pins
- B65C7/005—Portable tools
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Labeling Devices (AREA)
- Slide Fasteners (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Coating Apparatus (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improved system is described for attaching price tags to garments and for other joining applications using plastic fasteners dispensed through hollow, slotted needles. The system comprises a new method and tool for dispensing fasteners supplied in long lengths, together with improved fastener stock adapted for use therewith and for molding in continuous lengths.
An improved system is described for attaching price tags to garments and for other joining applications using plastic fasteners dispensed through hollow, slotted needles. The system comprises a new method and tool for dispensing fasteners supplied in long lengths, together with improved fastener stock adapted for use therewith and for molding in continuous lengths.
Description
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BACK~ROUND OF THE_INVENTION
This application is a division of Application Serial No. 309,128 filed August 9, 1978.
In recent years a large and successful business has been developed which employs flexible plastic fasteners of a type designed to be inserted through hollow slotted needles for tagging or for joining two objects together. Such fasteners, together with apparatus for applying them, have been widely employed for the attachment of buttons to garments, for price tagging in retail establishments, for the pairing of items such as shoes, and in various industrial applications. Such fasteners and apparatus are shown in numerous references, including among others, U. S. Patent Nos. 3,103,666; 3,399,432; 3,380,122;
3,444,597; 3,457,589; 3,470,834; 3,659,769; 3,733,657; 3,759,435;
3,875,648; 3,893,612; 3,895,753; and 3,948,128.
Most conveniently, plastic fasteners have been provided in assemblies for feeding sequentially through the dispensing apparatus. They have been supplied, as shown for example in U. S. Patent No. 3,103,666, attached by means of severable necks to a runner bar, or, as described for example in U.S. Patent 3,875,648, as a stock of continuous side members cross-coupled by a plurality of filaments, from which individual fasteners are severed. Fastener assemblies employing runner bars limit the number of fasteners which can be conveniently supplied in a single assembly and waste material since the runner bar is not put to productive end use. While these limitations are partially over-come by the fastener stock described in U.S. Patent 3,875,648, a need has persisted for improvements in manufacture and in
BACK~ROUND OF THE_INVENTION
This application is a division of Application Serial No. 309,128 filed August 9, 1978.
In recent years a large and successful business has been developed which employs flexible plastic fasteners of a type designed to be inserted through hollow slotted needles for tagging or for joining two objects together. Such fasteners, together with apparatus for applying them, have been widely employed for the attachment of buttons to garments, for price tagging in retail establishments, for the pairing of items such as shoes, and in various industrial applications. Such fasteners and apparatus are shown in numerous references, including among others, U. S. Patent Nos. 3,103,666; 3,399,432; 3,380,122;
3,444,597; 3,457,589; 3,470,834; 3,659,769; 3,733,657; 3,759,435;
3,875,648; 3,893,612; 3,895,753; and 3,948,128.
Most conveniently, plastic fasteners have been provided in assemblies for feeding sequentially through the dispensing apparatus. They have been supplied, as shown for example in U. S. Patent No. 3,103,666, attached by means of severable necks to a runner bar, or, as described for example in U.S. Patent 3,875,648, as a stock of continuous side members cross-coupled by a plurality of filaments, from which individual fasteners are severed. Fastener assemblies employing runner bars limit the number of fasteners which can be conveniently supplied in a single assembly and waste material since the runner bar is not put to productive end use. While these limitations are partially over-come by the fastener stock described in U.S. Patent 3,875,648, a need has persisted for improvements in manufacture and in
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feeding and dispensing the fasteners, especially for appli-cations such as price tagging where a single fastener end-bar is dispensed by means of a hand powered tool.
9~4322 SU~ARY OF THE DISCLOSURE
Principle objects of the present invention are to pro-vide improved methods and apparatus for feeding, severing and dispensing fasteners furnished in long lengths, and to provide fasteners of improved design suitable for economic manufacture and for use in the improved method and apparatus.
Fastener stock, as disclosed in U.S. Patent 3,875,648, comprises two continuous elongated plastic side members cross-coupled by a plurality of filaments or cross-links,the stock being proportioned to be fed as a unit to a position where individual fasteners are separated therefrom within a machine, at least one of the side members being proportioned so that each separated fastener includes an end-bar formed from a portion of the side member and is configured for feeding through the bore of a hollow needle having a longitudinal slot for passage of the associated filament, and in which each filament is foldable toward the associated end-bar for feeding through the hollow needle. Preferably, and as shown, the filaments and end-bars are substantially circular in cross-section.
According to the present improvement, the cross-sections are modified such that one side of each filament is a substantially flat surface corresponding to the parting line of the mold in which they are formed. The filament cross-section is sub-stantially D-shaped and provides draft on surfaces extending from the plane to facilitate removal from the mold. The side members are reduced in cross-sectional area between individual fasteners to provide severable connectors to facilitate separation.
The connectors join the end-bars of adjacent fasteners end-to-end .~P ~..J~';L322 at a portion of their periphery, preferably having a flat face at said plane extending from said plane on either the same side as the filaments or the opposite side thereof. Preferably they extend from the same side and the joined end-bars are substantially D-shaped. Where the connectors extend from the opposite side, the section thereof is preferably continued across the joined end-bars to provide a more rounded cross-section for feeding through circular needle bores. The filaments may be stretched, if desired, after forming to reduce their size and increase their strength as previously disclosed. Filament stock so proportioned is adapted for continuous molding in endless lengths and is well adapted for feeding, severing and dispensing by the method and apparatus hereinafter described.
According to a further aspect of the present invention, the novel method of dispensing fasteners comprises advancing a fastener from a first position remote from the needle to a second position adjacent the rear portion of the needle bore with the end-bar transversely disposed thereto, aligning the end-bar with said bore, severing said connector and forcing said end-bar through said bore. Preferably the connector is restrained from substantial movement, and the end end-bar is rotated about said connector which acts as a hinge.
Apparatus for practicing the method comprises a casing, a dispensing hollow slotted needle mounted to the casing, means for advancing a fastener to a position adjacent the rear of the needle bore with its end-bar transversely disposed to the longitudinal axis of the bore, means for aligning the end-bar with the needle bore, and means for dispensing the end-bar through the bore. Preferably the apparatus comprises a feed
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feeding and dispensing the fasteners, especially for appli-cations such as price tagging where a single fastener end-bar is dispensed by means of a hand powered tool.
9~4322 SU~ARY OF THE DISCLOSURE
Principle objects of the present invention are to pro-vide improved methods and apparatus for feeding, severing and dispensing fasteners furnished in long lengths, and to provide fasteners of improved design suitable for economic manufacture and for use in the improved method and apparatus.
Fastener stock, as disclosed in U.S. Patent 3,875,648, comprises two continuous elongated plastic side members cross-coupled by a plurality of filaments or cross-links,the stock being proportioned to be fed as a unit to a position where individual fasteners are separated therefrom within a machine, at least one of the side members being proportioned so that each separated fastener includes an end-bar formed from a portion of the side member and is configured for feeding through the bore of a hollow needle having a longitudinal slot for passage of the associated filament, and in which each filament is foldable toward the associated end-bar for feeding through the hollow needle. Preferably, and as shown, the filaments and end-bars are substantially circular in cross-section.
According to the present improvement, the cross-sections are modified such that one side of each filament is a substantially flat surface corresponding to the parting line of the mold in which they are formed. The filament cross-section is sub-stantially D-shaped and provides draft on surfaces extending from the plane to facilitate removal from the mold. The side members are reduced in cross-sectional area between individual fasteners to provide severable connectors to facilitate separation.
The connectors join the end-bars of adjacent fasteners end-to-end .~P ~..J~';L322 at a portion of their periphery, preferably having a flat face at said plane extending from said plane on either the same side as the filaments or the opposite side thereof. Preferably they extend from the same side and the joined end-bars are substantially D-shaped. Where the connectors extend from the opposite side, the section thereof is preferably continued across the joined end-bars to provide a more rounded cross-section for feeding through circular needle bores. The filaments may be stretched, if desired, after forming to reduce their size and increase their strength as previously disclosed. Filament stock so proportioned is adapted for continuous molding in endless lengths and is well adapted for feeding, severing and dispensing by the method and apparatus hereinafter described.
According to a further aspect of the present invention, the novel method of dispensing fasteners comprises advancing a fastener from a first position remote from the needle to a second position adjacent the rear portion of the needle bore with the end-bar transversely disposed thereto, aligning the end-bar with said bore, severing said connector and forcing said end-bar through said bore. Preferably the connector is restrained from substantial movement, and the end end-bar is rotated about said connector which acts as a hinge.
Apparatus for practicing the method comprises a casing, a dispensing hollow slotted needle mounted to the casing, means for advancing a fastener to a position adjacent the rear of the needle bore with its end-bar transversely disposed to the longitudinal axis of the bore, means for aligning the end-bar with the needle bore, and means for dispensing the end-bar through the bore. Preferably the apparatus comprises a feed
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wheel, an aligning means comprising a reciprocating cam slide which also actuates the feed wheel, a dispensing means comprising a plunger carried by a reciprocating support which also actuates the cam slide, and means for reciprocating the support. In accordance with the present invention, there is provided fastener stock of the type comprising two continuous and elongated plastic side members that are cross-coupled by a plurality of filaments, the stock being proportioned to be fed as a unit to a position where individual fasteners are separated therefrom within a machine, one of said side members being proportioned so that each separated fastener includes an end-bar formed from a portion of the said side member and is configured for feeding through the bore of a hollow needle having a longitudinal slot for passage of the associated filament, and in which each filament is foldable towards the associated end-bar that is feedable through said hollow needle; the improvement adapted for continuous molding and for feeding and dispensing individual fasteners therefrom wherein each of said filaments is molded with a D-shaped cross-section having its maximum width at a substantially flat plane at one side thereof~
said end-bars being wider in cross-section at said plane than in other planes parallel thereto, and wherein adjacent end-bars are connected end-to-end at a portion of their peripheries adjacent to said plane by means of a severable connector substantially smaller in cross-sectional area than said end-bars to expose a major portion of the end of a least one of the connected end-bars.
In accordance with the present invention, there is provided the method of continuously molding an assemblage of connected 3~Z2 fasteners which comprises the steps of (A) Forcing heated polymeric material into a platen;
(B) Moving a mold relative to said platen to reeeive said heated polymerie material in a set of depressions forming a longitudinally extending set of conneeted paddle members, a longitudinally extending set of eonneeted end-bars and a set of cross links coupling the paddle members to the end~bars.
In aecordanee with the present invention, there is also provided an assemblage of connected fasteners comprising a first side member constitutedbya longitudinally eonneeted /
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se~ of paddle members, a second side member constituted by a longitudinally connected set of end bars, and a filamentary cross link coupling each first side member to each end-bar, a longitudinal portion of each cross link having a continuous planar configuration. Preferred embodiments are more fully described hereinafter.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the accompanying drawings:
Figure 1 is a plan view of a first embodiment of fastener stock according to this invention;
Figure 2 is a rear view of the fastener stock of Figure l;
Figure 3 is a side view of the stock of Figure l;
Figure 4 is an end view of the stock of Figure l;
Figure 4A is an enlarged view of one end of Figure 4;
Figure 5 is a perspective view of a portion of the fastener stock of Figure 1 illustrating one end-bar and its associated connectors;
Figure 6 is a perspective view of a portion of the other end of the fastener stock of Figure 1;
Figure 7 is a plan view of a second embodiment of fastener stock according to the present invention;
Figure 8 is a side view of the embodiment of Figure 7;
Figure 8A is an enlarged view of one end of Figure 8;
Figure 9 is a plan view of a third embodiment of fastener stock;
Figure 10 is a schematic view of continuous molding apparatus;
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Figure 11 is a section along the lines 11-11 of Figure 10 illustrating molding apparatus to make the embodiment shown in Figure l;
Figure 12 is an alternate section along the lines 11-11 of Figure 10 illustrating molding apparatus Eor making the embodiment shown in Figure 7;
Figure 13 is a perspective view of the preferred embodiment of the dispensing apparatus of this invention, illustrating insertion of a fastener through woven materiali Figure 14 is another perspective view of the apparatus of Figure 13;
Figure 15 is a plan view of the apparatus of Figure 13 with portions of the casing broken away to show the operative interior mechanism, broken lines illustrating partial compression of the trigger to actuate the mechanism;
Figure 16 is a view similar to Figure 15 showing the trigger compressed;
Figure 17 is a view similar to Figure 15 showing tne trigger return stroke;
Figure 18 is a perspective view of the embodiment shown in Figures 13-17 showing the operative internal mechanism;
Figure 19 is a perspective view of the cam slide of the apparatus of Figure 18 Figure 20 is a side view of a portion of the needle, feed wheel and aligning cam illustrating the alignment of a fastener end-bar with the needle bore;
Figure 21 is a perspective view of a hollow slotted needle useful with the present invention; and .. ~
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Figure 22 is a perpective view of a needle and needle retaining pin.
Referring to Figures 1-6, one embodiment of the fastener stock of the present invention is shown which comprises elongated, continuous side members 50 and 51 cross-coupled by a plurality of cross-links or filaments 52. Side member 50 comprises a plurality of tab or paddle end members 53 joined together by severable connectors 54, one face of the tabs 53 being optionally embossed at 55 for inclusion of identification or decorative matter. Side member 51 comprises a plurality of end-bars 56 joined together by severable connectors 57.
As shown for example in Figure 5, the filaments 52 are approximately D-shaped in cross-section with the maximum width at a substantially flat plane 58 at one side thereof.
The remainder of their cross-section decreases in width from the lane 58 to the other side thereof and may be of any suitable shape, including converging curves, lines or combinations thereof.
Preferably the end-bar 56, as shown for example in Figure 4A, is larger in cross-section than the filament 52 and also has its widest parallel cross-section dimension 60 in the plane 58.
As shown in Figure 6, tab ends 53 are also flat and have their greatest cross-sectional dimension at the plane 58.
In the embodiment of Figures 1-6, tab connectors 54 and end-bar connectors 57 have one face at the plane 58, are substantially thinner than either filament 58, cross-bar 56, or tab 53, and extend away from the plane 58 on the side thereof opposite to the body of filament 52. They also extend contin-r~ ,3~Z
uously not on1~ ~etween adjacent tabs 53 and adjacent end-bars 56, but also extend across end-bars 56 and tabs 53 respectively.
Such extension provides a more rounded end-bar 56 (see Figure Il 4A) and can be molded as continuous runners as hereinafter, '¦ described.
I¦ As shown in Figures 1, 2 and 7, the filaments 52 ",~
be molded somewhat wider and of qreater circumferential dimension ,¦ adjacent tabs 53 than at end-bars 56 to facilitate stretching I¦ adjacent the end-bars where the filaments are folded durlng 10 ll dispensing through a hollow needle.
¦¦ A second embodiment of fastener stock of the present invention is shown in Figures 7, 8 and 8A which is identical I to the fastener stock shown in Figures 1-6 except that severable Il connectors 54a and 57a extend from the-plane 58 in the same 15 1I direction as the body of filament 52 and do not extend visibly ~¦ across either end-bars 56a or tabs 53a. This embodiment is most il preferred.
A third embodiment of fastener stock is shown in ll Figure 9 in which two side members 51a are employed to provide 20 I end-bars at both ends of the filament 52a. In this embodiment, the filament 52a is molded somewhat wider at its mid-portion and is somewhat narrower or smaller in circumferential dimension Il adjacent each end-bar to facilitate stretching and strengthening ¦l of the filament 52 at those portions which are folded during 25 ¦I dispensing. In all other respects, the embodiment of Figure 9 is identical to the embodiment of Figure 7.
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~ach o~ the foregoing embodiments of fastener stock are especially adap~ed for continuous molding and for feeding , and dispensing as hereinafter described. Continuous molding I of plastic parts is known and is disclosed for example in ~ U.S. Patent Nos. 3,085,292; 3,196,196; 3,515,778; and numerous ¦' others; and is schematically illustrated in Figures 10-12.
¦ Heated plastic is extruded from extruder 70 through orifices Il in platen 71 into cavities in the periphery of rotating molding Il wheel 72. After cooling, the continuously molded parts are 1¦ removed from molding wheel 72 by take-off roller 73 and feed rolls 74, 75, stretched if desired at 76 by any suitable apparatus, and the stock 77 wound onto take-up roll 78. Stretch-ing can be omitted or separately performed if desired.
Il As shown in Figure 11, cavities 52', 56' and 53' are il provided in the periphery of molding wheel 72 for the filanents !j 52, end-bars 56, and tabs 53, respectively. Connectors 54 and 57 are provided as continuous runner cavities 54' and 57' in ~, the platen 71. Tabs 53 may be of the same or different thickness ,I from the thickness of the filaments 52 as desired. As shown in ¦¦ Figure 12, connectors 54a and 57a may be provided by grooves 1, 54a' and57a'~ in the periphery of molding wheel 72a be~wee~
il fastener cavities.
By comparing Figures 10-12 with Fiyures 1-9, it will ~I be seen that the plane 58 is defined by the meeting surface of the platen 71 and the wheel 72. It should be understood ~! that the dimensions previously described refer to the fastener ¦¦ assemblies as they are molded. If the filaments are thereafter 1,1 .
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stretclled, as prcferred and as described in the foregoing patents, the edges of the flat plane 58 may be rounded somewhat in stretching but the filaments will maintain their general ¦I cross-sectional shape. End-bars 56 and tabs 53 are generally not 5: l¦ stretched. Some distortion from shrinkage and cooling may also be noted.
ji The preferred apparatus employing the method of the present invention is a hand-actuated dispensinq gun as shown in l Figures 13-22. The gun 100 comprises a hollow casing 102 1 preferably of molded plastic in two halves joined together in any suitable manner. Affixed to the casing 102 is vertical extension 104 to which is affixed a projecting rod 106 about il which a spirally wound assembly of fasteners may be secured.
Il The fastener stock may be retained on the rod 106 by means of lS 1¦ spring loaded detents 108 and 110 which may be folded towards ¦¦ each other for insertion of the fastener stock and moved to d vertical dis~osition for retention. The free end of the fastener l assembly stock, with the plane 58 facing upwardly as hereinafter ¦ described, is then fed over the periphery of feed wheel 112 which i is journaled for rotation within the casing 102. Wheel 112 has ~ means such as notches 114 about its periphery for receiving ¦ fasterler filaments 52 and advancin~ them in an arcuate ~,ath j about the wlleel to a position adjacent the rear end of forwardly Il projecting needle 116. Wheel 112 is spaced from the inner wall ¦1 of casing 102 to define a passageway for receiving and guiding fastener end-bars 56 as the wheel rotates. Casing 102 has a ~¦ projection 115 over hanging wheel 112 to aid in restraining the Il ;l ~ f~43~ ~
1.1 end-bars for travel within the ~rovided passageway. Detent pin 118 is mounted to casing 102 and is biased to restrain backward movement of wheel 112 by means of spring 120. Notches 114 are spaced about the periphery of the wheel 112 equal to the spacing between successive fastener filaments 52.
As shown for example in Figures 17 and 20, the end-most fastener end-bar 56e is indexed about the feed wheel 112 to a position transverse to the rear end of the bore 122 of the needle 116. A severing edye 124 may be secured to the needle or to the casing opposite the connector 57 connecting end-bar 56e with the end-bar of the next following fastener. As shown for example in Figure 20, reciprocating cam means 126 is then advanced to rotate the end-most end-bar 56e about its connector as a hinge into alignment with the bore of the needle. A projecting tab 128 is provided in the casing in the vertical plane of wheel 112 forming an extension of the passageway about the wheel for the end-bars to guide the same during rotation. Tab 128 has a curved upper surface configured to guide the filament projecting from th~
wheel as the end-bar 56e is rotated into alignment.
¦~ After the end-bar is aligned with the needle bore 122, a plunger 130 is brought forward to contact the free rear end of aligned end-bar 56e to pusll it through the hollow needle bore, slmultaneously breaking or cutting connector 57 at severing means 124. As illustrated in Figure 13, the plunger drives the end-bar through the hollow needle which, if inserted through one or more layers of material 132 will secure them together or will secure a tag thereto. As the needle s wlthdrawn from the material 132, r 3~%
I end-bar 56e will resiliently resullle its tran-~verse position with Il res~ect to the filament to prevent withdrawal of the filament ¦I from the material. Motion of the tool as it is removed from the Il material 132 will break the connector 54 joininy tab 53 to the S !¦ next following tab in the manner illustrated for example in U.S. Paten~ 3,733,657. For thi~ purpo~e, connector 54 ~hould b~
j relatively weak. Any other suitable means for severing may also rOvid~
~1 A knob or knurled wheel 134 is provided on the exterior !¦ of the casing 102 to turn the feed wheel 112 for feeding fastener stock into and out of the apparatus.
! Plunger 130 is fixed at its rearward end to a rear l slide or plun{3er su~ort 136 which slides back and forth within ¦I slide grooves in the casing to reciprocate the plunger in and out ¦l of the needle ~ore 122. Slide 136 is pivotally joined to the upper end 13B of lever member 140 which extends downwardly into Il the hollow handle portion 141 of the casing 102. The lower end ¦¦ of lever member 140 is secured by means of slot 142 to a pin 144 ¦I carried by hollow trigger 146 which is pivotally joined at 148 1l to casing 102 for movement back and forth within hollow handle 141. Pin 144 acts as a cam and the wall of slot 142 as a cam follower to impart motion to the lever member 140. Member 140 is joined intermediate its ends to a floating pivot 150 which is l secured to one end of member 153, the opposite end of which is ¦I pivotally secured at 155 to the handle 141. Trigger 146 is l~ biased in the open position by means of compression s~ring 15~
described more fully hereinafter. Lever member 140 is biased by . I , rll 11443ZZ
1, the spring 156 to retain the plunger support 136 in its rearward j position. Upon squeezing the handle 141 and trigger 146, mem~er 140 pivots about floating pivot point 150 to actuate support 136, I! causing it to slide from its rearward to its forward position, ¦I pushing the plunger through the needle bore 122 and ejecting a fastener end-bar through the needle. Plunger 130 is withdrawn from the needle bore by the energy stored in spring 156 when pressure on the trigger is released.
ll A forward slide 152 is mounted in the forward end 1 of casing 102 and slides back and forth in slide grooves 154a and 154b in the casing. Slide 152 has a recess 159 which, together with the interior wall of the casing, houses a compressi~
spring 158 which constitutes means for biasing the slide 152 in ~its forward position. Slide 152 has a rearwardly extending llflexible arm 160 which has at its rearward end a detent surface 162 and an inclined cam surface 164. Plunger support 136 carries a cooperating cam surface 166 and detent surface 168 which actuates slide 152 as follows. When the trigger 146 is s~uee2ed, lland lever member 140 is actuated to advance plunger support 13t 1I cam surface 166 rides up and over cam surface 164, deflecting flexible arm 160. On the return stroke of plunger support 136, detent surfaces 162 and 168 engage as shown for example in ;Figure 17 and the plunger support 136 then Moves slide 152 Irearwardly, compressing biasing spring 158.
1~ As the plunger support 136 approaches its rearward position, a fixed cam 170 mounted to the casing engages a rearward extension of cam surface 164 which deflects arm 160 l ll 32~
downwardly until the detent surfaces 162 and 168 are disengaged.
Upon such disengagement, compressed biasing spring 158 causes slide 152 to return to its forward position. Cam 126 is carried by the sllde 152 and on its forward stroke rotates end-bar 56e into alignment with the needle bore 122.
Slide 152 has a second forwardly extending resilient arm 171 which has a rearwardly facing detent surface 172 and a forward cam surface 174. Feed wheel 112 is provided with cooperating index pins 176, one for each indexing position, each of which has a cam surface 178. AS the slide 152 is drawn rearwardly by plunger support 136, cam surface 172 engages a pin 176 to rotate feed wheel 112 and feed the next fastener into position with its end-bar transverse to the longitudinal axis of the needle bore. On the return forward stroke of slide 152, cam surface 174 rides up and over cam surface 178 of the lower pin 175 to deflect arm 171 and allow its passage into its forward position ready for the next indexing stroke.
The needle 116 can be a hollow slotted needle of any known type suitable for feeding flexible fasteners, the fastener end-bar being dispensed through the hollow bore of the needle and the filament extending through and sliding within the communicat-ing slot 180. Needle ll6 is preferably removably secured to the forward end of the casing 102 by means of a pin 182 which engayes a corresponding cut-out 184 in the needle 116. Pin 182 is also provided with a cut-out slot 186 which provides a passageway for insertion and removal of the needle. Pin 182 is biased on its lockingpositionby means of spring 188 mounted in the casing.
When the pin is pushed toward spring 188 to compress it, slot ~ t~2,~
186 aligns with the needle to free it for removal. Preferablythe portion of the pin 182 engaging needle Cllt-Out 184 in locking position is rectangular or square in cross-section.
In a hand-actuated dispensing gun of the type described, it is desirable that the actuating force to operate the device be as small as possible to avoid operator fatigue. The movable linkage disclosed in U.S.Patent 3,893,612 is preferably employed for mechanical advantage as described. In addition, it is desirable that the compression force required decrease as the trigger is depressed. Such decreasing force is provided by the spring arrangement shown. The rear end of spring 156 is secured to a fixed pivot 157 in the handle 141. The forward end of the spring however is fixed to a movable pivot 190 which is secured to trigger 146 and moves therewith as the trigger is depressed.
Movable pivot 190 is so located that in its normal extended position, an extension of the centerline or longitudinal axis of the spring 156 is located a substantial distance from the fixed pivot 148. As the trigger is depressed, this centerline moves with pivot 190 into a position closer to pivot pin 148 thereby decreasing the moment arm, the compressive force required, and the extent of compressive motion of the spring, all in a smooth and continuous manner.
It should be noted that the apparatus described is readily assembled from molded or other easily fabricated parts, requires modest actuating force for hand operation, is positive in action, and is adapted to feed long lengths of fastener stock.
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I' It should be further noted, for example by reference to Figur~
jl that the coiled fastener stock has the connectors 57 or 57a facing outwardly at the free end for feeding over the periphery ~l of the feed wheel. This places the connector during rotation S j¦ of the end-bar 56e lnto alignment with the needle bore in position to act as a hinge, to engage the severing edge 124, and to expose the rnajority of the end-bar end-section to the plunger , as the L~lunger is actuated to dis~ense the en~-bar throuyh the Il needle.
ll The operation of the apparatus described comprises the following sequence:
j (1) A coil of fastener stock is placed over pin 106, or an alternative holder of fan-folded stock as shown in Figure lll 12 of U.S. Patent 3,875,648, connectors 57 and plane 58 at the I5 1I free end facing upwardly. The free end is fed over feed wheel 112 and knob 134 is rotated until the end fastener 56e rests ,l against the upper surface oE cam 126.
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(2) Trigger 146 is squeezed ayainst handle 141 to !! rotate lever member 140 about pivot 150, thereby compressing I return spring 156 and sliding plunger support 136 forward, , cam surface 166 sliding over and deflecting cam surface 164.
¦ (3) Trigger 146 is released, spring 156 causing support 136 to return to its rearward position. As support 136 Il returns, slide 152 is moved to its rear position and spring 158 11 is compressed until cooperating detents 162 and 168 are disengayed by deflection of arm 160 by cam surfaces 170 and 164. On the rearward stroke of slide 152, detent 172 on arm 171 engages pin .i 1, 1 r; ~ 3ZZ
, 176 of feed wheel 112 to index the wheel and feed end-bar 56e to the posltion sllowll in Fi~ure 17. ~g slide 152 returns to its ! forward position, cam surfaces 174 and 178 en~age to deflect arm ¦ 170, and cam 126 rotates end-bar 56e about connector 57 into 1¦ alignment with needle bore 122 as shown in Figure 20.
I¦ (4) Trig~er 146 is again s~ueezed to move plunger l! support 136 and plun~er 130 forwardly to enya~e the exposed end Il of end-bar 56e and dispense it throu~h the bore 122, edge 124 ¦~ severinc3 the connector 57.
1 (5) ~s trig~er 146 is again released, the se~uence described in (3) above is repeated to prepare the next end-bar for dispensing.
While the apparatus d~scribed is well adapted for Ii hand operation, the operations may be powered by any suitable 1I means, for example, by means of electrical devices or fluid il pressure. Such means are described for example in the afore-~' mentioned U.S. Patent 3,875,648. And while the novel fastener stock herein described is well adapted for use in the method and Il apparatus described, other suitable fastener stock can bè
1! employed. The novel fastener stock may also be dispensed by mean-of other suitable apparatus, for example as disclosed in U.S.
! Patent 3,875,648.
It should be further under~tood that the present `! invention includes all modifications and e~uivalents within the il scope of the appended claims.
I 1, Il - 17 -
wheel, an aligning means comprising a reciprocating cam slide which also actuates the feed wheel, a dispensing means comprising a plunger carried by a reciprocating support which also actuates the cam slide, and means for reciprocating the support. In accordance with the present invention, there is provided fastener stock of the type comprising two continuous and elongated plastic side members that are cross-coupled by a plurality of filaments, the stock being proportioned to be fed as a unit to a position where individual fasteners are separated therefrom within a machine, one of said side members being proportioned so that each separated fastener includes an end-bar formed from a portion of the said side member and is configured for feeding through the bore of a hollow needle having a longitudinal slot for passage of the associated filament, and in which each filament is foldable towards the associated end-bar that is feedable through said hollow needle; the improvement adapted for continuous molding and for feeding and dispensing individual fasteners therefrom wherein each of said filaments is molded with a D-shaped cross-section having its maximum width at a substantially flat plane at one side thereof~
said end-bars being wider in cross-section at said plane than in other planes parallel thereto, and wherein adjacent end-bars are connected end-to-end at a portion of their peripheries adjacent to said plane by means of a severable connector substantially smaller in cross-sectional area than said end-bars to expose a major portion of the end of a least one of the connected end-bars.
In accordance with the present invention, there is provided the method of continuously molding an assemblage of connected 3~Z2 fasteners which comprises the steps of (A) Forcing heated polymeric material into a platen;
(B) Moving a mold relative to said platen to reeeive said heated polymerie material in a set of depressions forming a longitudinally extending set of conneeted paddle members, a longitudinally extending set of eonneeted end-bars and a set of cross links coupling the paddle members to the end~bars.
In aecordanee with the present invention, there is also provided an assemblage of connected fasteners comprising a first side member constitutedbya longitudinally eonneeted /
/
/
-5a-3 ~Z
se~ of paddle members, a second side member constituted by a longitudinally connected set of end bars, and a filamentary cross link coupling each first side member to each end-bar, a longitudinal portion of each cross link having a continuous planar configuration. Preferred embodiments are more fully described hereinafter.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the accompanying drawings:
Figure 1 is a plan view of a first embodiment of fastener stock according to this invention;
Figure 2 is a rear view of the fastener stock of Figure l;
Figure 3 is a side view of the stock of Figure l;
Figure 4 is an end view of the stock of Figure l;
Figure 4A is an enlarged view of one end of Figure 4;
Figure 5 is a perspective view of a portion of the fastener stock of Figure 1 illustrating one end-bar and its associated connectors;
Figure 6 is a perspective view of a portion of the other end of the fastener stock of Figure 1;
Figure 7 is a plan view of a second embodiment of fastener stock according to the present invention;
Figure 8 is a side view of the embodiment of Figure 7;
Figure 8A is an enlarged view of one end of Figure 8;
Figure 9 is a plan view of a third embodiment of fastener stock;
Figure 10 is a schematic view of continuous molding apparatus;
- 5~ -t4tj~?J%
Figure 11 is a section along the lines 11-11 of Figure 10 illustrating molding apparatus to make the embodiment shown in Figure l;
Figure 12 is an alternate section along the lines 11-11 of Figure 10 illustrating molding apparatus Eor making the embodiment shown in Figure 7;
Figure 13 is a perspective view of the preferred embodiment of the dispensing apparatus of this invention, illustrating insertion of a fastener through woven materiali Figure 14 is another perspective view of the apparatus of Figure 13;
Figure 15 is a plan view of the apparatus of Figure 13 with portions of the casing broken away to show the operative interior mechanism, broken lines illustrating partial compression of the trigger to actuate the mechanism;
Figure 16 is a view similar to Figure 15 showing the trigger compressed;
Figure 17 is a view similar to Figure 15 showing tne trigger return stroke;
Figure 18 is a perspective view of the embodiment shown in Figures 13-17 showing the operative internal mechanism;
Figure 19 is a perspective view of the cam slide of the apparatus of Figure 18 Figure 20 is a side view of a portion of the needle, feed wheel and aligning cam illustrating the alignment of a fastener end-bar with the needle bore;
Figure 21 is a perspective view of a hollow slotted needle useful with the present invention; and .. ~
32.'~
Figure 22 is a perpective view of a needle and needle retaining pin.
Referring to Figures 1-6, one embodiment of the fastener stock of the present invention is shown which comprises elongated, continuous side members 50 and 51 cross-coupled by a plurality of cross-links or filaments 52. Side member 50 comprises a plurality of tab or paddle end members 53 joined together by severable connectors 54, one face of the tabs 53 being optionally embossed at 55 for inclusion of identification or decorative matter. Side member 51 comprises a plurality of end-bars 56 joined together by severable connectors 57.
As shown for example in Figure 5, the filaments 52 are approximately D-shaped in cross-section with the maximum width at a substantially flat plane 58 at one side thereof.
The remainder of their cross-section decreases in width from the lane 58 to the other side thereof and may be of any suitable shape, including converging curves, lines or combinations thereof.
Preferably the end-bar 56, as shown for example in Figure 4A, is larger in cross-section than the filament 52 and also has its widest parallel cross-section dimension 60 in the plane 58.
As shown in Figure 6, tab ends 53 are also flat and have their greatest cross-sectional dimension at the plane 58.
In the embodiment of Figures 1-6, tab connectors 54 and end-bar connectors 57 have one face at the plane 58, are substantially thinner than either filament 58, cross-bar 56, or tab 53, and extend away from the plane 58 on the side thereof opposite to the body of filament 52. They also extend contin-r~ ,3~Z
uously not on1~ ~etween adjacent tabs 53 and adjacent end-bars 56, but also extend across end-bars 56 and tabs 53 respectively.
Such extension provides a more rounded end-bar 56 (see Figure Il 4A) and can be molded as continuous runners as hereinafter, '¦ described.
I¦ As shown in Figures 1, 2 and 7, the filaments 52 ",~
be molded somewhat wider and of qreater circumferential dimension ,¦ adjacent tabs 53 than at end-bars 56 to facilitate stretching I¦ adjacent the end-bars where the filaments are folded durlng 10 ll dispensing through a hollow needle.
¦¦ A second embodiment of fastener stock of the present invention is shown in Figures 7, 8 and 8A which is identical I to the fastener stock shown in Figures 1-6 except that severable Il connectors 54a and 57a extend from the-plane 58 in the same 15 1I direction as the body of filament 52 and do not extend visibly ~¦ across either end-bars 56a or tabs 53a. This embodiment is most il preferred.
A third embodiment of fastener stock is shown in ll Figure 9 in which two side members 51a are employed to provide 20 I end-bars at both ends of the filament 52a. In this embodiment, the filament 52a is molded somewhat wider at its mid-portion and is somewhat narrower or smaller in circumferential dimension Il adjacent each end-bar to facilitate stretching and strengthening ¦l of the filament 52 at those portions which are folded during 25 ¦I dispensing. In all other respects, the embodiment of Figure 9 is identical to the embodiment of Figure 7.
,1 1., l l il~432Z
. I .
~ach o~ the foregoing embodiments of fastener stock are especially adap~ed for continuous molding and for feeding , and dispensing as hereinafter described. Continuous molding I of plastic parts is known and is disclosed for example in ~ U.S. Patent Nos. 3,085,292; 3,196,196; 3,515,778; and numerous ¦' others; and is schematically illustrated in Figures 10-12.
¦ Heated plastic is extruded from extruder 70 through orifices Il in platen 71 into cavities in the periphery of rotating molding Il wheel 72. After cooling, the continuously molded parts are 1¦ removed from molding wheel 72 by take-off roller 73 and feed rolls 74, 75, stretched if desired at 76 by any suitable apparatus, and the stock 77 wound onto take-up roll 78. Stretch-ing can be omitted or separately performed if desired.
Il As shown in Figure 11, cavities 52', 56' and 53' are il provided in the periphery of molding wheel 72 for the filanents !j 52, end-bars 56, and tabs 53, respectively. Connectors 54 and 57 are provided as continuous runner cavities 54' and 57' in ~, the platen 71. Tabs 53 may be of the same or different thickness ,I from the thickness of the filaments 52 as desired. As shown in ¦¦ Figure 12, connectors 54a and 57a may be provided by grooves 1, 54a' and57a'~ in the periphery of molding wheel 72a be~wee~
il fastener cavities.
By comparing Figures 10-12 with Fiyures 1-9, it will ~I be seen that the plane 58 is defined by the meeting surface of the platen 71 and the wheel 72. It should be understood ~! that the dimensions previously described refer to the fastener ¦¦ assemblies as they are molded. If the filaments are thereafter 1,1 .
_ g _ I, .
"
stretclled, as prcferred and as described in the foregoing patents, the edges of the flat plane 58 may be rounded somewhat in stretching but the filaments will maintain their general ¦I cross-sectional shape. End-bars 56 and tabs 53 are generally not 5: l¦ stretched. Some distortion from shrinkage and cooling may also be noted.
ji The preferred apparatus employing the method of the present invention is a hand-actuated dispensinq gun as shown in l Figures 13-22. The gun 100 comprises a hollow casing 102 1 preferably of molded plastic in two halves joined together in any suitable manner. Affixed to the casing 102 is vertical extension 104 to which is affixed a projecting rod 106 about il which a spirally wound assembly of fasteners may be secured.
Il The fastener stock may be retained on the rod 106 by means of lS 1¦ spring loaded detents 108 and 110 which may be folded towards ¦¦ each other for insertion of the fastener stock and moved to d vertical dis~osition for retention. The free end of the fastener l assembly stock, with the plane 58 facing upwardly as hereinafter ¦ described, is then fed over the periphery of feed wheel 112 which i is journaled for rotation within the casing 102. Wheel 112 has ~ means such as notches 114 about its periphery for receiving ¦ fasterler filaments 52 and advancin~ them in an arcuate ~,ath j about the wlleel to a position adjacent the rear end of forwardly Il projecting needle 116. Wheel 112 is spaced from the inner wall ¦1 of casing 102 to define a passageway for receiving and guiding fastener end-bars 56 as the wheel rotates. Casing 102 has a ~¦ projection 115 over hanging wheel 112 to aid in restraining the Il ;l ~ f~43~ ~
1.1 end-bars for travel within the ~rovided passageway. Detent pin 118 is mounted to casing 102 and is biased to restrain backward movement of wheel 112 by means of spring 120. Notches 114 are spaced about the periphery of the wheel 112 equal to the spacing between successive fastener filaments 52.
As shown for example in Figures 17 and 20, the end-most fastener end-bar 56e is indexed about the feed wheel 112 to a position transverse to the rear end of the bore 122 of the needle 116. A severing edye 124 may be secured to the needle or to the casing opposite the connector 57 connecting end-bar 56e with the end-bar of the next following fastener. As shown for example in Figure 20, reciprocating cam means 126 is then advanced to rotate the end-most end-bar 56e about its connector as a hinge into alignment with the bore of the needle. A projecting tab 128 is provided in the casing in the vertical plane of wheel 112 forming an extension of the passageway about the wheel for the end-bars to guide the same during rotation. Tab 128 has a curved upper surface configured to guide the filament projecting from th~
wheel as the end-bar 56e is rotated into alignment.
¦~ After the end-bar is aligned with the needle bore 122, a plunger 130 is brought forward to contact the free rear end of aligned end-bar 56e to pusll it through the hollow needle bore, slmultaneously breaking or cutting connector 57 at severing means 124. As illustrated in Figure 13, the plunger drives the end-bar through the hollow needle which, if inserted through one or more layers of material 132 will secure them together or will secure a tag thereto. As the needle s wlthdrawn from the material 132, r 3~%
I end-bar 56e will resiliently resullle its tran-~verse position with Il res~ect to the filament to prevent withdrawal of the filament ¦I from the material. Motion of the tool as it is removed from the Il material 132 will break the connector 54 joininy tab 53 to the S !¦ next following tab in the manner illustrated for example in U.S. Paten~ 3,733,657. For thi~ purpo~e, connector 54 ~hould b~
j relatively weak. Any other suitable means for severing may also rOvid~
~1 A knob or knurled wheel 134 is provided on the exterior !¦ of the casing 102 to turn the feed wheel 112 for feeding fastener stock into and out of the apparatus.
! Plunger 130 is fixed at its rearward end to a rear l slide or plun{3er su~ort 136 which slides back and forth within ¦I slide grooves in the casing to reciprocate the plunger in and out ¦l of the needle ~ore 122. Slide 136 is pivotally joined to the upper end 13B of lever member 140 which extends downwardly into Il the hollow handle portion 141 of the casing 102. The lower end ¦¦ of lever member 140 is secured by means of slot 142 to a pin 144 ¦I carried by hollow trigger 146 which is pivotally joined at 148 1l to casing 102 for movement back and forth within hollow handle 141. Pin 144 acts as a cam and the wall of slot 142 as a cam follower to impart motion to the lever member 140. Member 140 is joined intermediate its ends to a floating pivot 150 which is l secured to one end of member 153, the opposite end of which is ¦I pivotally secured at 155 to the handle 141. Trigger 146 is l~ biased in the open position by means of compression s~ring 15~
described more fully hereinafter. Lever member 140 is biased by . I , rll 11443ZZ
1, the spring 156 to retain the plunger support 136 in its rearward j position. Upon squeezing the handle 141 and trigger 146, mem~er 140 pivots about floating pivot point 150 to actuate support 136, I! causing it to slide from its rearward to its forward position, ¦I pushing the plunger through the needle bore 122 and ejecting a fastener end-bar through the needle. Plunger 130 is withdrawn from the needle bore by the energy stored in spring 156 when pressure on the trigger is released.
ll A forward slide 152 is mounted in the forward end 1 of casing 102 and slides back and forth in slide grooves 154a and 154b in the casing. Slide 152 has a recess 159 which, together with the interior wall of the casing, houses a compressi~
spring 158 which constitutes means for biasing the slide 152 in ~its forward position. Slide 152 has a rearwardly extending llflexible arm 160 which has at its rearward end a detent surface 162 and an inclined cam surface 164. Plunger support 136 carries a cooperating cam surface 166 and detent surface 168 which actuates slide 152 as follows. When the trigger 146 is s~uee2ed, lland lever member 140 is actuated to advance plunger support 13t 1I cam surface 166 rides up and over cam surface 164, deflecting flexible arm 160. On the return stroke of plunger support 136, detent surfaces 162 and 168 engage as shown for example in ;Figure 17 and the plunger support 136 then Moves slide 152 Irearwardly, compressing biasing spring 158.
1~ As the plunger support 136 approaches its rearward position, a fixed cam 170 mounted to the casing engages a rearward extension of cam surface 164 which deflects arm 160 l ll 32~
downwardly until the detent surfaces 162 and 168 are disengaged.
Upon such disengagement, compressed biasing spring 158 causes slide 152 to return to its forward position. Cam 126 is carried by the sllde 152 and on its forward stroke rotates end-bar 56e into alignment with the needle bore 122.
Slide 152 has a second forwardly extending resilient arm 171 which has a rearwardly facing detent surface 172 and a forward cam surface 174. Feed wheel 112 is provided with cooperating index pins 176, one for each indexing position, each of which has a cam surface 178. AS the slide 152 is drawn rearwardly by plunger support 136, cam surface 172 engages a pin 176 to rotate feed wheel 112 and feed the next fastener into position with its end-bar transverse to the longitudinal axis of the needle bore. On the return forward stroke of slide 152, cam surface 174 rides up and over cam surface 178 of the lower pin 175 to deflect arm 171 and allow its passage into its forward position ready for the next indexing stroke.
The needle 116 can be a hollow slotted needle of any known type suitable for feeding flexible fasteners, the fastener end-bar being dispensed through the hollow bore of the needle and the filament extending through and sliding within the communicat-ing slot 180. Needle ll6 is preferably removably secured to the forward end of the casing 102 by means of a pin 182 which engayes a corresponding cut-out 184 in the needle 116. Pin 182 is also provided with a cut-out slot 186 which provides a passageway for insertion and removal of the needle. Pin 182 is biased on its lockingpositionby means of spring 188 mounted in the casing.
When the pin is pushed toward spring 188 to compress it, slot ~ t~2,~
186 aligns with the needle to free it for removal. Preferablythe portion of the pin 182 engaging needle Cllt-Out 184 in locking position is rectangular or square in cross-section.
In a hand-actuated dispensing gun of the type described, it is desirable that the actuating force to operate the device be as small as possible to avoid operator fatigue. The movable linkage disclosed in U.S.Patent 3,893,612 is preferably employed for mechanical advantage as described. In addition, it is desirable that the compression force required decrease as the trigger is depressed. Such decreasing force is provided by the spring arrangement shown. The rear end of spring 156 is secured to a fixed pivot 157 in the handle 141. The forward end of the spring however is fixed to a movable pivot 190 which is secured to trigger 146 and moves therewith as the trigger is depressed.
Movable pivot 190 is so located that in its normal extended position, an extension of the centerline or longitudinal axis of the spring 156 is located a substantial distance from the fixed pivot 148. As the trigger is depressed, this centerline moves with pivot 190 into a position closer to pivot pin 148 thereby decreasing the moment arm, the compressive force required, and the extent of compressive motion of the spring, all in a smooth and continuous manner.
It should be noted that the apparatus described is readily assembled from molded or other easily fabricated parts, requires modest actuating force for hand operation, is positive in action, and is adapted to feed long lengths of fastener stock.
~ l.
432;~
I' It should be further noted, for example by reference to Figur~
jl that the coiled fastener stock has the connectors 57 or 57a facing outwardly at the free end for feeding over the periphery ~l of the feed wheel. This places the connector during rotation S j¦ of the end-bar 56e lnto alignment with the needle bore in position to act as a hinge, to engage the severing edge 124, and to expose the rnajority of the end-bar end-section to the plunger , as the L~lunger is actuated to dis~ense the en~-bar throuyh the Il needle.
ll The operation of the apparatus described comprises the following sequence:
j (1) A coil of fastener stock is placed over pin 106, or an alternative holder of fan-folded stock as shown in Figure lll 12 of U.S. Patent 3,875,648, connectors 57 and plane 58 at the I5 1I free end facing upwardly. The free end is fed over feed wheel 112 and knob 134 is rotated until the end fastener 56e rests ,l against the upper surface oE cam 126.
!!
(2) Trigger 146 is squeezed ayainst handle 141 to !! rotate lever member 140 about pivot 150, thereby compressing I return spring 156 and sliding plunger support 136 forward, , cam surface 166 sliding over and deflecting cam surface 164.
¦ (3) Trigger 146 is released, spring 156 causing support 136 to return to its rearward position. As support 136 Il returns, slide 152 is moved to its rear position and spring 158 11 is compressed until cooperating detents 162 and 168 are disengayed by deflection of arm 160 by cam surfaces 170 and 164. On the rearward stroke of slide 152, detent 172 on arm 171 engages pin .i 1, 1 r; ~ 3ZZ
, 176 of feed wheel 112 to index the wheel and feed end-bar 56e to the posltion sllowll in Fi~ure 17. ~g slide 152 returns to its ! forward position, cam surfaces 174 and 178 en~age to deflect arm ¦ 170, and cam 126 rotates end-bar 56e about connector 57 into 1¦ alignment with needle bore 122 as shown in Figure 20.
I¦ (4) Trig~er 146 is again s~ueezed to move plunger l! support 136 and plun~er 130 forwardly to enya~e the exposed end Il of end-bar 56e and dispense it throu~h the bore 122, edge 124 ¦~ severinc3 the connector 57.
1 (5) ~s trig~er 146 is again released, the se~uence described in (3) above is repeated to prepare the next end-bar for dispensing.
While the apparatus d~scribed is well adapted for Ii hand operation, the operations may be powered by any suitable 1I means, for example, by means of electrical devices or fluid il pressure. Such means are described for example in the afore-~' mentioned U.S. Patent 3,875,648. And while the novel fastener stock herein described is well adapted for use in the method and Il apparatus described, other suitable fastener stock can bè
1! employed. The novel fastener stock may also be dispensed by mean-of other suitable apparatus, for example as disclosed in U.S.
! Patent 3,875,648.
It should be further under~tood that the present `! invention includes all modifications and e~uivalents within the il scope of the appended claims.
I 1, Il - 17 -
Claims (2)
1. The method of continuously molding an assemblage of connected fasteners which comprises the steps of (A) Forcing heated polymeric material into a platen;
(B) Moving a mold relative to said platen to receive said heated polymeric material in a set of depressions forming a longitudinally extending set of connected paddle members, a longitudinally extending set of connected end-bars and a set of cross links coupling the paddle members to the end-bars.
(B) Moving a mold relative to said platen to receive said heated polymeric material in a set of depressions forming a longitudinally extending set of connected paddle members, a longitudinally extending set of connected end-bars and a set of cross links coupling the paddle members to the end-bars.
2. The method of Claim 1 wherein said mold is in the form of a rotating molding wheel and said depressions are provided by cavities in the periphery thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000423062A CA1162351A (en) | 1977-08-24 | 1983-03-07 | Method for dispensing fasteners from fastener stock |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82727677A | 1977-08-24 | 1977-08-24 | |
| US827,276 | 1977-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1144322A true CA1144322A (en) | 1983-04-12 |
Family
ID=25248785
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000309128A Expired CA1120441A (en) | 1977-08-24 | 1978-08-10 | Method and apparatus for dispensing fasteners |
| CA000377621A Expired CA1144322A (en) | 1977-08-24 | 1981-05-14 | Method and apparatus for dispensing fasteners |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000309128A Expired CA1120441A (en) | 1977-08-24 | 1978-08-10 | Method and apparatus for dispensing fasteners |
Country Status (18)
| Country | Link |
|---|---|
| JP (2) | JPS5913375B2 (en) |
| AR (1) | AR224347A1 (en) |
| AU (1) | AU529308B2 (en) |
| BE (1) | BE869938A (en) |
| BR (1) | BR7805471A (en) |
| CA (2) | CA1120441A (en) |
| DE (2) | DE2837101C2 (en) |
| DK (1) | DK153110C (en) |
| ES (3) | ES472791A1 (en) |
| FR (2) | FR2406116B1 (en) |
| GB (2) | GB2053296B (en) |
| HK (2) | HK45383A (en) |
| IN (2) | IN150283B (en) |
| IT (1) | IT1098105B (en) |
| MX (2) | MX148990A (en) |
| NL (1) | NL7808713A (en) |
| SE (2) | SE433544B (en) |
| ZA (1) | ZA784811B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331276A (en) * | 1979-09-07 | 1982-05-25 | Dennison Manufacturing Company | Dispensing of attachment members |
| JPS56123212A (en) * | 1980-02-27 | 1981-09-28 | Pa Management Consult | Automatic bundling gun |
| JPS6024009B2 (en) * | 1980-09-11 | 1985-06-11 | 株式会社トスカ | Mounting piece assembly |
| NL8200513A (en) * | 1982-02-11 | 1983-09-01 | Japan Banok Co Ltd | ATTACHERS FOR CONNECTORS. |
| US4640320A (en) * | 1983-09-20 | 1987-02-03 | Bowthorpe-Hellermann Limited | Automatic tie gun |
| JPS6053695U (en) * | 1983-09-21 | 1985-04-15 | 三菱農機株式会社 | Crawler traveling device |
| JPS60240629A (en) * | 1984-05-04 | 1985-11-29 | 株式会社 トスカ | Connector aggregate |
| JPS63500687A (en) * | 1986-01-17 | 1988-03-10 | デニソン マテユフアクチユアリング カムパニ− | Anti-snatch interlocking paddle fasteners |
| US4901854A (en) * | 1988-09-29 | 1990-02-20 | Dennison Manufacturing Company | Loop connected attachments |
| NL9402105A (en) * | 1994-12-12 | 1996-07-01 | Johannus Ferdinandus Smit | Method and device for the insertion of information carriers. |
| US6848606B2 (en) * | 2001-04-04 | 2005-02-01 | Avery Dennison Corporation | Apparatus for dispensing individual plastic fasteners from fastener stock |
| EP1814418A4 (en) * | 2004-10-12 | 2013-06-12 | Kingsdown Inc | Mattress construction with filamentary fasteners |
| JP5946839B2 (en) * | 2010-12-08 | 2016-07-06 | エイブリィ デニソン コーポレーション | Notched fixture stock |
| US9792839B2 (en) | 2010-12-23 | 2017-10-17 | Avery Dennison Corporation | Wide filament fastener and stock |
| EP2786364B1 (en) * | 2011-11-28 | 2017-06-21 | Avery Dennison Corporation | Device for dispensing plastic fasteners |
| JP6048305B2 (en) * | 2013-05-10 | 2016-12-21 | 住友電装株式会社 | Band clip, wire harness with band clip and assembly |
| US9789991B2 (en) | 2013-08-28 | 2017-10-17 | Avery Dennison Corporation | Reactor plate assembly and brush anvil for use in conjunction therewith |
| CN108855800A (en) * | 2018-08-27 | 2018-11-23 | 广东华辉煌光电科技有限公司 | A kind of dispenser of the bottom plate and application of the dispensing bottom plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB542364A (en) * | 1940-07-03 | 1942-01-06 | Talon Inc | Improvements in or relating to the manufacture of sliding clasp fasteners |
| GB873664A (en) * | 1959-06-12 | 1961-07-26 | Lightning Fasteners Ltd | Improvements in moulding of products in continuous lengths |
| US3103666A (en) * | 1961-12-28 | 1963-09-17 | Dennison Mfg Co | Tag attaching apparatus |
| US3196196A (en) * | 1962-03-12 | 1965-07-20 | Scovill Manufacturing Co | Process and apparatus for molding zipper fasteners |
| US3243092A (en) * | 1964-06-26 | 1966-03-29 | Morley Company | Apparatus for attaching strap handles |
| US3380122A (en) * | 1966-02-01 | 1968-04-30 | Dennison Mfg Co | Mold for making an attachment device |
| US3444597A (en) * | 1966-12-12 | 1969-05-20 | Dennison Mfg Co | Filament type attachment device and manufacture of same |
| US3515778A (en) * | 1967-03-02 | 1970-06-02 | Du Pont | Continuous molding of thermoplastic resin |
| DE1920772A1 (en) * | 1969-04-24 | 1970-11-12 | Hermann Klaus D | Identification tab for use in cleaning facilities |
| JPS503500B2 (en) * | 1971-09-13 | 1975-02-05 | ||
| BE792298A (en) * | 1972-05-25 | 1973-03-30 | Dennison Mfg Co | ATTACHMENT IMPROVEMENTS FOR THE MEETING OF TWO OBJECTS TOGETHER |
| US3875648A (en) * | 1973-04-04 | 1975-04-08 | Dennison Mfg Co | Fastener attachment apparatus and method |
| AU498809B2 (en) * | 1973-04-04 | 1979-03-29 | Dennison Manufacturing Company | Fastener attachment |
| US4039078A (en) * | 1973-04-04 | 1977-08-02 | Dennison Manufacturing Company | Fastener attachment stock |
| JPS5254318Y2 (en) * | 1973-05-10 | 1977-12-08 | ||
| US3948128A (en) | 1973-12-07 | 1976-04-06 | Dennison Manufacturing Company | Feed and severing apparatus |
-
1978
- 1978-08-10 CA CA000309128A patent/CA1120441A/en not_active Expired
- 1978-08-18 AU AU39071/78A patent/AU529308B2/en not_active Expired
- 1978-08-22 SE SE7808840A patent/SE433544B/en not_active IP Right Cessation
- 1978-08-23 ZA ZA00784811A patent/ZA784811B/en unknown
- 1978-08-23 JP JP53101908A patent/JPS5913375B2/en not_active Expired
- 1978-08-23 AR AR273400A patent/AR224347A1/en active
- 1978-08-23 MX MX174613A patent/MX148990A/en unknown
- 1978-08-23 BR BR7805471A patent/BR7805471A/en unknown
- 1978-08-23 FR FR7824526A patent/FR2406116B1/en not_active Expired
- 1978-08-23 DK DK371478A patent/DK153110C/en not_active IP Right Cessation
- 1978-08-23 MX MX195166A patent/MX159597A/en unknown
- 1978-08-23 ES ES472791A patent/ES472791A1/en not_active Expired
- 1978-08-23 IT IT26968/78A patent/IT1098105B/en active
- 1978-08-23 NL NL7808713A patent/NL7808713A/en active Search and Examination
- 1978-08-24 BE BE190040A patent/BE869938A/en not_active IP Right Cessation
- 1978-08-24 DE DE2837101A patent/DE2837101C2/en not_active Expired
- 1978-08-24 GB GB8027414A patent/GB2053296B/en not_active Expired
- 1978-08-24 DE DE2858034A patent/DE2858034C2/de not_active Expired - Fee Related
- 1978-08-24 GB GB7834552A patent/GB2003968B/en not_active Expired
- 1978-12-02 IN IN869/DEL/78A patent/IN150283B/en unknown
-
1979
- 1979-04-02 ES ES479221A patent/ES479221A1/en not_active Expired
- 1979-04-02 ES ES479220A patent/ES479220A1/en not_active Expired
- 1979-04-27 FR FR7910948A patent/FR2416770A1/en active Granted
-
1981
- 1981-05-14 CA CA000377621A patent/CA1144322A/en not_active Expired
- 1981-09-12 JP JP56144542A patent/JPS583232B2/en not_active Expired
- 1981-11-09 IN IN704/DEL/81A patent/IN157371B/en unknown
-
1983
- 1983-05-18 SE SE8302791A patent/SE457701B/en not_active IP Right Cessation
- 1983-10-20 HK HK453/83A patent/HK45383A/xx unknown
- 1983-10-27 HK HK483/83A patent/HK48383A/en unknown
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