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AU724496B2 - Cable tie bandoliers for use with automatic tools - Google Patents

Cable tie bandoliers for use with automatic tools Download PDF

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Publication number
AU724496B2
AU724496B2 AU11352/00A AU1135200A AU724496B2 AU 724496 B2 AU724496 B2 AU 724496B2 AU 11352/00 A AU11352/00 A AU 11352/00A AU 1135200 A AU1135200 A AU 1135200A AU 724496 B2 AU724496 B2 AU 724496B2
Authority
AU
Australia
Prior art keywords
shot
ties
cable ties
bandolier
cable
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.)
Ceased
Application number
AU11352/00A
Other versions
AU1135200A (en
Inventor
Salvatore J. Abbruzzese
Mark A. Bordwell
Michael A. Bridgman
William T. O'neill
Peter M Wells Jr.
Derek Woods
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Installation Products International LLC
Original Assignee
Thomas and Betts International LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomas and Betts International LLC filed Critical Thomas and Betts International LLC
Priority to AU11352/00A priority Critical patent/AU724496B2/en
Publication of AU1135200A publication Critical patent/AU1135200A/en
Application granted granted Critical
Publication of AU724496B2 publication Critical patent/AU724496B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128Stepped joint cross-sections
    • B29C66/1282Stepped joint cross-sections comprising at least one overlap joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128Stepped joint cross-sections
    • B29C66/1284Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/302Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Frames And Binding Bands (AREA)

Description

AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATEN~T Applicant(s): THOMAS BETTS INTERNATIONAL, INC.
Invention Title: CABLE TIE BANDOLIERS FOR USE WITH AUTOMATIC TOOLS 0* 0* 9 *90* 969.
9 9*9* 9 The following statement is a full description of this invention, including the best method of performing it known to me/us: 2 CABLE TIE BANDOLIERS FOR USE WITH AUTOMATIC TOOLS Background of the Invention The present invention relates to cable tie bandoliers for use with automatic cable tie tools, and, more particularly, to continuous cable tie bandoliers formed from non-continuous molding operations.
Cable ties have long been known in bundling electrical cables or like articles.
As is well known, an individual cable tie includes an elongate strap body including a tail at one end and a head at the opposite end. The cable tie may be placed about a group of cables and the tail is inserted through the head. The head includes an .i S appropriate locking mechanism such as a barb or pawl which cooperates with the tail *to lock the strap body in the head.
15 It is also known to use appropriately constructed tools to apply cable ties about the bundle of cables. In certain instances, such cable tie tools are automatic cable tie tools which feed individual cable ties into the tool from a dispenser or other mechanism which supports a plurality of cable ties. These plurality of cable ties may be arranged in a dispenser in reels of wound cable ties known as a bandolier. Each 20 bandolier of cable ties would include a plurality of side-by-side cable ties arranged in longitudinal succession.
The art has seen various techniques for reeling cable ties for use in automatic cable tie tools. However, each of the prior art devices have distinct disadvantages.
For instance one technique is to support the cable ties in side-by-side fashion by use of a carrier strip extending exteriorly of the aligned heads. The carrier strip supports the cable ties in bandoliered fashion. It can be appreciated that the carrier strip results in excessive waste when the cable ties are cut from the carrier strip in the automatic cable tie tool.
Another technique is to form webs between adjacent cable ties to support the \\melb_fi les\home$\ARymer\Keep\Speci\Andrew\P36979.doc 14/01/00 3 cable ties in side-by-side spaced fashion along the bandolier. However, to ensure that the cable ties remain parallel to one another in the bandolier, webs must be placed both adjacent the head and the tail so as to couple together side-by-side cable ties at two distinct locations. Again, this type of construction results in an increase in waste.
Further it is difficult to mold such a configuration in an economical fashion. In addition, many of the techniques to form bandoliers of cable ties rely on the heads being supported at one end and the tails extending adjacent the other end. When such cable ties are wound on a reel, the wound bandolier is bulkier at the head end than at the end adjacent the tails. This results in difficulty in accurately supporting the wound bandolier of cable ties within an appropriate dispensing mechanism Also there is a tendency for the tails to become intertwined. This renders automatic installation of the ties difficult.
:..bo In the manufacture of such cable ties, the ties are typically formed in a 15 continuous molding operation, i.e. a plurality of longitudinally aligned cable ties (a shot of ties) is molded in one molding operation. Thereafter, the shot of ties is moved ooo, externally of the mold and a second longitudinally successive shot of ties is molded.
o In order to maintain continuity between the individual shots of cable ties, the finished shot must be maintained in contact with the mold so that the next successive shot of 20 cable ties will be connected thereto.
In order to effectively form ties in such a fashion, each shot of ties must be manufactured on a relatively small scale. Thus, the individual shots of ties are manufactured with small cavity molds. Continuous molding in this fashion also results in slower cycle times as compared with the use of conventional larger cavity molds. Furthermore, if during the continuous molding process, a defective tie is manufactured, the entire strip of ties must be discarded. The present invention provides for the ability to continuously link together shots of cable ties without employing a continuous molding process.
\\melbfiles\homeS\ARymer\Keep\Speci\ndrew\P36979.doc 14/01/00 4 Summary of the Invention According to the present invention, therefore, there is provided a cable tie bandolier for use with an automatic cable tie tool, having: a first shot of interconnected cable ties, each of said cable ties having a head and a tail, and said first shot defining a first leading edge and a first trailing edge; and a second shot of interconnected cable ties, each of said cable ties having a head and a tail, and said second shot defining a second leading edge and a second trailing edge; wherein said edges include cooperating mechanical structure, and wherein said structure of said first trailing edge of said first shot cooperates with said structure of said second leading edge of said second shot to join said first and second shots into a continuous strip; and wherein said cable ties in each of said shots are interconnected by a web positioned between adjacent ties and located proximate the centre of said ties S""i 15 whereby both said heads and tails of said adjacent ties are maintained in parallel alignment.
0**o Preferably said structure comprises cooperating male and female components, and wherein one of said components is located on said first trailing edge "20 of said first shot and the other of said components is located on said second leading edge of said second shot.
Preferably said male and female components interfit in a snap-fit manner.
Preferably said male and female components are ultrasonically welded to one another to permanently join said first and second shots.
Preferably said male component includes a director for concentrating a source of ultrasonic energy applied thereto.
Preferably the cooperating mechanical structure is located at opposing ends \\relbf i les\home$ \ARymer\Keep\Speci\Andrew\P36979.doc 14/01/00 of said shots.
Preferably the web comprises a one-piece member integrally formed with said adjacent ties.
The present invention also provides a method of manufacturing a continuous strip of cable ties, comprising: molding a first shot of interconnected cable ties, said first shot defining a first leading edge and a first trailing edge; molding a second shot of interconnected cable ties discrete from said first shot, said second shot defining a second leading edge and a second trailing edge, and attaching said second leading edge to said first trailing edge subsequent to molding of said shots to provide a continuous strip of cable ties.
15 Preferably the second leading edge and said first trailing edge include a complementary interfitting structure located to allow cooperation therebetween; and further comprising the step of interfitting said complementary structure.
Preferably said structure comprises male and female cooperating components, one of said components located on said first trailing edge and the other of said components located on said second leading edge; and further comprising the step of mechanically connecting said male and female components.
Preferably the method further comprises the step of ultrasonically welding said male and female components together.
Preferably the method further comprises the step of ultrasonically welding said complementary structure.
As a result, the present invention provides an improved technique for \\melbfiles\homeS\ARymer\Keep\Speci\Andrew\P 3 6 9 7 9 .doc 14/01/00 6 interconnecting the cable ties of a bandolier whereby the cable ties of such bandolier may be readily cut from the bandolier without excessive waste, the cable ties of such bandolier are sufficiently supported and maintained in proper alignment to facilitate use in the automatic tool and whereby the bandolier may be readily wound on a reel for use in an automatic tool.
Brief Description Of The Drawings In order that the present invention may be more clearly ascertained, preferred embodiments will now be described, by way of example, with reference to the drawings in which: Figure 1 is a plan view of a continuous bandolier of cable ties according to a preferred embodiment of the present invention, formed from two interconnected shots of cable ties; :Figure 2 is a sectional view taken along lines 2-2 of Figure 1; 15 Figure 3 is an enlarged detail of a male snap connector; Figure 4 is a view taken along lines 4-4 of Figure 3; Figure 5 is a side view of the connector of Figure 3; Figure 6 is a bottom plan view of the connector of Figure 3; Figure 7 is an enlarged detail of a female snap connector; Figure 8 is a view taken along lines 8-8 of Figure 7; Figure 9 is a side view of the connector of Figure 7; Figure 10 is a bottom plan view of the connector of Figure 7; Figure 11 is an enlarged detail of a male sonically weldable connector; Figure 12 is a view taken along lines 12-12 of Figure 11; Figure 13 is a side view of the connector of Figure 11; Figure 14 is a bottom plan view of the connector of Figure 11; Figure 15 is an enlarged detail of a female sonically weldable connector; Figure 16 is a view taken along lines 16-16 of Figure Figure 16a is a side view of the connector of Figure Figure 17 is a sectional view taken along lines 17-17 of Figure Figure 18 is a bottom plan view of the connector of Figure \\melb_files\home$\ARymer\Keep\Speci\Andrew\P369 7 9 .doc 14/01/00 7 Figure 19a is an enlarged detail of the male sonically weldable connector of Figure 11; Figure 19b is another enlarged detail of the male sonically weldable connector of Figure 11; Figure 20 is a top plan view of a bandolier of cable ties in accordance with an alternative preferred embodiment of the present invention; Figure 20a is a side view of the bandolier of Figure Figure 21 is an end view of the bandolier of Figure Figure 22 is an enlarged detail taken from Figure 21; Figure 23 is an enlarged detail taken from Figure 21; and Figure 24 is an enlarged detail illustrating the cooperation of the interfitting •structure provided on the shots of cable ties according to an alternative embodiment of the present invention.
15 Detailed Description of the Preferred Embodiments As described herein, prior art bandoliers are typically formed in a continuous molding operation, ie., a plurality of longitudinal aligned cable ties (a shot of ties) is molded in one molding operation. Thereafter, the shot of ties is moved externally of the mold and a second longitudinally successive shot of ties is molded. In order to maintain continuity between the individual shots of cable ties, the finished shot must be maintained in contact with the mold so that the next successive shot of cable ties will be connected thereto.
Rather than connecting one shot of cable ties to the next by continuous molding, the present invention contemplates manufacturing separate individual shots of cable ties which can be interconnected together subsequent to molding to form a continuous strip of cable ties of any desired length. In this regard, the present invention provides connection capability between the individual shots of cable ties which allows the mentioned post-molding interconnection thereof.
An individual shot 10 of cable ties 12 according to a preferred embodiment \\melbfiles\home$\ARymer\Keep\Speci\Andrew\P36 9 7 9 .doc 14/01/00 of the present invention is shown in Figure 1. Shot 10 includes a plurality of cable ties 12 10 cable ties). Of course, each individual shot can include any number of cable ties, such number being limited only by the size of the molding apparatus.
Each cable tie 12 generally includes an elongate strap body 14 having a tail 16 at one end and a head 18 at the other end. In use, the cable tie is placed around a bundle of cables and the tail 16 is inserted through the head 18. The head 18 may include an appropriate locking mechanism such as a barb or a pawl which cooperates with the tail for securing a strap of body 14 within the head about the bundle of cables.
•Each individual shot of ties defines a leading cable tie 12a and a trailing cable tie 12b. In turn, leading cable tie 12a defines a leading edge 20, while trailing cable tie 12b defines a trailing edge 22. In the embodiment of Figure 1, both the leading •15 and trailing edges 20, 22 are provided with a portion of structure sized and configured to cooperate with a complementary portion of structure formed on the edge of a second shot of ties. More particularly, the leading edge of one shot of ties includes a portion of structure sized and configured to cooperate with a portion of structure located on a trailing edge of another shot of ties, thus allowing 20 interconnection of the two shots of ties into one continuous strip. If each shot included ten individual ties 12 (as shown in Figure the combined shots would form a continuous strip of twenty ties. As mentioned, the individual shots can be of as many ties as is commercially practical, and any number of individual shots can be joined together thereby allowing the formation of a continuous strip a bandolier) of cable ties of any desired length.
Leading edge 20 of leading cable tie 12a includes a male snap connector 24, while trailing edge 22 of trailing cable tie 12b includes a female snap connector 26. It will be appreciated that this arrangement of the mentioned male and female snap connectors on the leading and trailing edges of the shot, respectively, allows the leading edge of one shot to be connected to trailing edge of the a second shot.
\\rel bfiles\home\Aymer\Keep\Speci\Andrew\P36979-doo 14/01/00 9 As shown in Figure 1, the individual cable ties of the shot are interconnected by a web 28 which is integrally formed with the cable ties during the molding process.
A web is preferably formed between each set of adjacent ties. As mentioned, the leading and trailing edges are provided with mechanical structure to allow connection of the shot to a second shot of cable ties.
The mold is preferably configured to form apertures 30 in each of the webs during the injection molding process. Apertures 30 facilitate the process of cutting the web free of the cable tie. More particularly, in one preferred embodiment, a single blade simultaneously cuts legs 32, 33 of the web, while a second blade e• simultaneously cuts legs 34, 36 of the web. As shown, a smooth notch 38 is formed on both sides of legs 32, 33, 34, and 36. These notches, which are formed in the edges of the cable ties during the molding process, facilitate the cutting operation and 15 eliminate the likelihood of creating burrs or nicks which can subsequently produce stress fractures.
As best shown in Figure 2, each shot 10 of cable ties is preferably provided with at least one dummy connector 40. As shown, the overall thickness of dummy connector 40 is D 1, which in one preferred embodiment is approximately 0.144 inches. The dummy connector is sized to correspond to the thickness of the connectors located on the leading and trailing edges of the shots once such connectors have been interfitted with an adjacent connector on a second shot of cable ties. The inclusion of dummy connector 40 facilitates the bundling of the final bandolier of cable ties by creating a uniform thickness at pre-determined spots along the length of the bundle.
Each web also includes a plurality of indexing bosses 42. The embodiment of Figure 1 includes two such bosses on each web. As will be recognized by those skilled in the art, indexing bosses 42 are utilized by the dispensing mechanism to properly index and orient the cable ties in the automatic tool. As shown in Figure 2, \\melbfiles\home$\ARymer\Keep\Speci\Andrew\P369 7 9 .doc 14/01/00 10 bosses 42, which extend from a single surface of the web, are preferably formed with a height which corresponds to one-half the thickness of dummy connector As shown in Figure 1, web 28 is preferably positioned on the tail side of an axis Y, such axis defining the center of length of the cable tie. Stated differently, web 28 is located closer to the tail end of the cable tie than to the head end of the cable tie.
The location of web 28 at a position closer to the tail end of the cable tie ensures that the tails of the bandolier are maintained in proper alignment. It will be recognized that the dispenser of an automatic cable tie tool feeds the ties to the tools in a "tailforward" fashion. Thus, it is typically of greater importance to maintain the tails of cable tie bandolier in a pre-determined alignment than the heads of such bandolier. It S•will be appreciated that once the tail end of a cable tie is directed towards the automatic tool, the head will naturally follow.
15 As mentioned, each shot of cable ties is preferably formed through an injection-molding operation. The size of the mold determines the number of individual cable ties in such shot. One preferred material contemplated by the present invention is nylon 6-6. It is further contemplated that for shots of a greater number of ties, more than a single dummy connector may be required. In one preferred embodiment, a dummy connector is located adjacent every fifth tie. Of course, the number of dummy connectors can be increased or decreased based on the specification and the requirements of the automatic tool.
Referring to Figures 3 to 10, the male and female connectors, male snap connector 24 and female snap connector 26, are shown in greater detail. These connectors are also formed with notches 30 about the legs thereof to facilitate the cutting of the connector from the cable tie. As shown, the male and female connectors are sized to cooperate with one another in a snap fit manner which result in substantially permanent connection therebetween.
Referring now to Figures 11 to 18, it is contemplated herein that the \\melb files\home$\ARymer\Keep\Speci\Andrew\P369 7 9 .doec 14/01/00 11 cooperating interfitting mechanical structure located on the leading and trailing edges of the cable ties may subsequently be exposed to an ultrasonic welding process following the interfitting of such structure. In this regard, a male sonically weldable connector 44 and a female sonically weldable connector 46 are utilized on the leading and trailing edges of the individual shots of cable ties. As will be appreciated by those skill in the art, ultrasonic welding is a process whereby ultrasonic energy is directed at a pre-determined location, the sonically weldable connectors, which results in the melting of at least a portion of the material of such connector whereby the male and female connectors are fused to one another. In this regard, the male sonically weldable connector is preferably provided with a plurality of external ribs 48 which function as the ultrasonic directors for concentrating ultrasonic energy applied to the connector (see Figures 19a to 19b).
Referring to Figures 20 to 20a, a shot 100 of plural cable ties 102 molded in 15 accordance with an alternative embodiment of the present invention is shown. Shot 100 includes a plurality of longitudinally aligned cable ties 102. The cable ties are arranged in two rows of side-by-side cable ties with each row of cable ties being connected in a tail-to-tail fashion. Thus, the heads 104 of the cable ties are disposed at opposite ends of the shot 100. Such a shot of cable ties may be manufactured in 20 large cavitational molds having multiple cavities.
The individual ties 102 of the shot 100 may be connected between the heads 104 by a web 106 of material. Each tail 108 is connected to the tail 108 of the opposed cable tie of the other row. An additional web of material 110 is formed between the end-to-end tails.
Rather than connecting one shot of cable ties 100 to the next by continuous molding, the present invention contemplates manufacturing separate individual shots of cable ties which can be interconnected together subsequent to molding to form a continuous strip of cable ties of any desirable length. In this regard, the present invention provides connection capability between the individual shots of cable ties.
\\melb_files\homeS\ARymer\Keep\Speci\Andrew\P36979.doc 14/01/00 12 Referring to Figure 21, the heads of the two rows of cable ties are shown in end view. The individual cable tie heads 104 at each longitudinal end of the two rows include interconnection structure which allows the heads of the end cable ties of one shot to be connected to the heads of the end cable ties of the next subsequently formed shot. Several techniques for mechanically interconnecting the shots of cable ties may be employed.
In the present invention with additional reference to Figures 22 and 23, one technique is particularly described. Head 104a at the end of one row of cable ties may include a mechanical interfitting structure 112 (detail The end cable tie head S104b in longitudinal opposition thereto may include a mechanically complementary interfitting structure 114 extending therefrom (detail Structures 112 and 114 extend from heads 104a and 104b in a manner similar to webs 106 extending between 15 the other heads 104. It can be appreciated that structure 112 of one shot of cable ties may be mechanically interfitted with structure 114 of an adjacent shot of cable ties so as to continuously connect successive shots of cable ties.
The present invention contemplates employing ultrasonic welding techniques 20 to secure one shot of cable ties to the next using interfitting structure 112 and 114.
As shown in Figure 24, one of the structures, for instance, structure 112 may include an extending director 116 which serves to concentrate the ultrasonic energy so as to securely ultrasonically weld structure 112 to structure 114.
While ultrasonic welding has been shown as the preferred method of continuously connecting shots of cable ties, other mechanical interfitting structures may be incorporated into the molded shot of cable ties. For instance, a structure such as interfitting snap members or the like may also be employed to mechanically couple one shot of cable ties to the next successive shot of cable ties. Any other mechanical connection technique may also be employed.
\\melbfiles\home\ARymer\Keep\Speci\Andrew\P36979.doc 14/01/00 13 It may be apparent that connection of the shots occur at both ends of the shot, i.e. at the heads of each row of ties. Once a desired number of shots of cable ties are coupled together in longitudinally successive fashion, the continuous strip of cable ties may be rolled around a reel or the like (not shown). Cable tie reels of such construction have particular utility in automatic cable tie tools which are used to apply cable ties about a bundle of cables or like articles.
The present invention provides several advantages over other techniques used to form continuous strips of cable ties. The present invention allows use of larger cavitational tooling which reduces the cost of the product. Furthermore, the cycle times necessary to form a shot of cable ties can be reduced. Finally, if in the S•manufacture of one shot of cable ties a defective cable tie is formed, that shot of cable ties can be discarded and the next successive shot of cable ties can be connected to the strip. Thus, one defective tie will not result in the necessity to discard a larger "i15 continuously molded strip of cable ties. Such a technique reduces scrap and lowers the cost of the product while increasing the quality of the cable tie strip manufactured thereby.
The bandolier of Figures 20 to 20a solves many of the deficiencies of the 20 prior art by arranging the cable ties in two longitudinally extending rows of side-byside cable ties with the heads of one row being mutually interconnected by webs therebetween and the heads of the other row being mutually interconnected by webs therebetween. The tails of each cable tie of one row are connected to the tails of the adjacent cable tie of the other row.
With reference to Figures 20 and 20a, bandolier 100 includes webs 106 integrally formed between the heads 104. The webs are formed along with the molding process which forms the bandolier of a plurality of cable ties. The webs serve to space the heads apart from one another. The webs are formed of a thin plastic material which may be easily severed during the dispensing process. The webs leave minimal waste and can be discarded in an easy fashion. The webs between the \\mel bfi les\home$\ARymer\Keep\Speci\Andrew\ P36979.doc 14/01/00 14 heads allow the cable ties to extend in substantially side-by-side parallel fashion where the tails of the cable ties of each row are longitudinally spaced from one another. In order to maintain stability between the ties of one row and the ties of the other row, the tails of the ties of one row are interconnected to the tails of the ties of the adjacent row. The molding process of the present invention forms a web 110 between oppositely adjacent tails of the cable ties so that the ties of one row are webbed together to the ties of the adjacent row.
Several advantages are achieved with the bandolier of Figure 20. First, when winding the bandolier of cable ties on a reel, both opposite ends of the bandolier have the same thickness, thus the wound bandolier has uniform bulk at both ends and may be easily inserted into a dispenser. Second, by interconnecting adjacent tails, the tails are maintained in protective position preventing damage thereto. Damage to the tails during shipment or use in the automatic cable tie tool will result in difficulties in 15 attempting to automatically bind the cable tie about a bundle of cables in an automatic tool environment. Furthermore, as the ties of the bandolier are employed in a dual row configuration, the thickness of the reel of ties for a given amount of ties is 0 reduced significantly. This allows for a more compact dispenser and also reduces the •chances of entanglement of the individual cable ties on the reel.
It will be appreciated that the present invention has been described herein with reference to certain preferred or exemplary embodiments. The preferred or ago**: 0 0 exemplary embodiments described herein may be modified, changed, added to or deviated from without departing from the intent, spirit and scope of the present invention, and it is intended that all such additions, modifications, amendment and/or deviations be included within the scope of the followings claims.
\\melb-files\home$\ARymer\Keep\Speci\Andrew\P369 7 9 .doC 14/01/00 EDITORIAL NOTE NO.11352/2000 This specification does not contain a page numbered

Claims (17)

1. A cable tie bandolier for use with an automatic cable tie tool, having: a first shot of interconnected cable ties, each of said cable ties having a head and a tail, and said first shot defining a first leading edge and a first trailing edge; and a second shot of interconnected cable ties, each of said cable ties having a head and a tail, and said second shot defining a second leading edge and a second trailing edge; wherein said edges include cooperating mechanical structure, and wherein said structure of said first trailing edge of said first shot cooperates with said structure of said second leading edge of said second shot to join said first and second shots into a continuous strip; and S•wherein said cable ties in each of said shots are interconnected by a web V. 15 positioned between adjacent ties and located proximate the centre of said ties 15 whereby both said heads and tails of said adjacent ties are maintained in parallel alignment.
2. A bandolier as claimed in Claim 1, wherein said structure comprises cooperating male and female components, and wherein one of said components is 20 located on said first trailing edge of said first shot and the other of said components is located on said second leading edge of said second shot.
3. A bandolier as claimed in Claim 2, wherein said male and female components interfit in a snap-fit manner.
4. A bandolier as claimed in either Claim 2 or 3, wherein said male and female components are ultrasonically welded to one another to permanently join said first and second shots.
5. A bandolier as claimed in Claim 4, wherein said male component includes a director for concentrating a source of ultrasonic energy applied thereto. \\me I _files\home\ARymer\Keep\Speci\Andrew\P369 7 9 .doc 14/01/00 17
6. A bandolier as claimed in any one of the preceding claims, wherein said cooperating mechanical structure is located at opposing ends of said shots.
7. A bandolier as claimed in any one of the preceding claims, wherein said web comprises a one-piece member integrally formed with said adjacent ties.
8. A bandolier as claimed in any one of the preceding claims, wherein said web is located closer to said tail of said tie than to said head of said tie to ensure accurate alignment of said tails.
9. A bandolier as claimed in any one of the preceding claims, wherein at least a portion of material is removed from said web along at least one side thereof to facilitate cutting of said web from said bandolier during installation of said cable ties.
10. A bandolier as claimed in any one of the preceding claims, wherein the sides of said cable ties are provided with smooth notches proximate said web to facilitate cutting of said web from said ties. 20
11. A method of manufacturing a continuous strip of cable ties, comprising: molding a first shot of interconnected cable ties, said first shot defining a first leading edge and a first trailing edge; molding a second shot of interconnected cable ties discrete from said first shot, said second shot defining a second leading edge and a second trailing edge, and attaching said second leading edge to said first trailing edge subsequent to molding of said shots to provide a continuous strip of cable ties.
12. A method as claimed in Claim 11, wherein said second leading edge and said first trailing edge include a complementary interfitting structure located to allow cooperation therebetween; and further comprising the step of interfitting said complementary structure. \\melb_files\homeS\ARymer\Keep\Speci\Andrew\P 3 6 9 7 9 .doc 14/01/00 18
13. A method as claimed in Claim 12, wherein said structure comprises male and female cooperating components, one of said components located on said first trailing edge and the other of said components located on said second leading edge; and further comprising the step of mechanically connecting said male and female components.
14. A method as claimed in Claim 13, further comprising the step of ultrasonically welding said male and female components together.
A method as claimed in any one of Claims 12 to 14, further comprising the step of ultrasonically welding said complementary structure. o•
16. A cable tie bandolier substantially as herein before described with reference 15 to Figures 1 to 19b or to Figures 20 to 23 or to Figure 24 of the accompanying drawings.
17. A method of manufacturing a continuous strip of cable ties substantially as herein before described with reference to Figures 1 to 19b or to Figures 20 to 23 or 20 to Figure 24 of the accompanying drawings. Dated this 14th day of January 2000 THOMAS BETTS CORPORATION By their Patent Attorneys GRIFFITH HACK Fellows Institute of Patent and Trade Mark Attorneys of Australia \\melb-files\home$\ARymer\Keep\Speci\Andrew\P369 7 9 .doc 14/01/00
AU11352/00A 1996-10-22 2000-01-14 Cable tie bandoliers for use with automatic tools Ceased AU724496B2 (en)

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US60029582 1996-10-22
US60029584 1996-10-22
AU11352/00A AU724496B2 (en) 1996-10-22 2000-01-14 Cable tie bandoliers for use with automatic tools

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2352685A1 (en) * 2008-07-16 2011-08-10 Robert Baird Watson Improved cable tie

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640319A (en) * 1980-02-27 1987-02-03 Bowthorpe-Hellermann Limited Automatic tie gun
US4640320A (en) * 1983-09-20 1987-02-03 Bowthorpe-Hellermann Limited Automatic tie gun
US4790225A (en) * 1982-11-24 1988-12-13 Panduit Corp. Dispenser of discrete cable ties provided on a continuous ribbon of cable ties

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640319A (en) * 1980-02-27 1987-02-03 Bowthorpe-Hellermann Limited Automatic tie gun
US4790225A (en) * 1982-11-24 1988-12-13 Panduit Corp. Dispenser of discrete cable ties provided on a continuous ribbon of cable ties
US4640320A (en) * 1983-09-20 1987-02-03 Bowthorpe-Hellermann Limited Automatic tie gun

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2352685A1 (en) * 2008-07-16 2011-08-10 Robert Baird Watson Improved cable tie
EP2352685A4 (en) * 2008-07-16 2012-12-05 Robert Baird Watson Improved cable tie
US8474104B2 (en) 2008-07-16 2013-07-02 Robert Baird Watson Cable tie

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