GB2225980A - Jig for joining plastics sections - Google Patents

Jig for joining plastics sections Download PDF

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Publication number
GB2225980A
GB2225980A GB8826914A GB8826914A GB2225980A GB 2225980 A GB2225980 A GB 2225980A GB 8826914 A GB8826914 A GB 8826914A GB 8826914 A GB8826914 A GB 8826914A GB 2225980 A GB2225980 A GB 2225980A
Authority
GB
United Kingdom
Prior art keywords
jig
shaft
spindle
rollers
washers
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.)
Withdrawn
Application number
GB8826914A
Other versions
GB8826914D0 (en
Inventor
George Slater
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB8826914A priority Critical patent/GB2225980A/en
Publication of GB8826914D0 publication Critical patent/GB8826914D0/en
Publication of GB2225980A publication Critical patent/GB2225980A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/14—Clamps for work of special profile
    • B25B5/142—Clamps for work of special profile for windows and frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/14—Clamps for work of special profile
    • B25B5/145—Clamps for work of special profile for plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint 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
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General 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
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
    • B29C66/4342—Joining substantially flat articles for forming corner connections, e.g. for making V-shaped pieces
    • B29C66/43421—Joining substantially flat articles for forming corner connections, e.g. for making V-shaped pieces with a right angle, e.g. for making L-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General 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
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/434—Joining substantially flat articles for forming corner connections, fork connections or cross connections
    • B29C66/4344—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces
    • B29C66/43441—Joining substantially flat articles for forming fork connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces, H-shaped pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81461—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being multi-lamellar or segmented, i.e. comprising a plurality of strips, plates or stacked elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4895—Solvent bonding, i.e. the surfaces of the parts to be joined being treated with solvents, swelling or softening agents, without adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2901/00—Use of unspecified macromolecular compounds as mould material
    • B29K2901/12—Thermoplastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2905/00—Use of metals, their alloys or their compounds, as mould material
    • B29K2905/02—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/001—Profiled members, e.g. beams, sections
    • B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/40—Test specimens ; Models, e.g. model cars ; Probes

Abstract

A jig for joining and forming plastics sections 23, 24 for use in model making comprises a pair of end rollers 10, 11 mounted on a shaft 12 and between which can be secured discs or plates 20, 21 of different dimensions whereby the discs or plates 20, 21 together with the end rollers 10, 11 define a peripheral groove 22 in the configuration of the section to be formed. The discs or plates 20, 21 are washers (e.g. of aluminium) adapted to be removably slid onto the shaft or spindle, the washers being circular and of varying diameters, whereby the end rollers 10, 11 and washers 20, 21 can be assembled to define a circumferential groove 22 of the required sectional configuration. The roller 10 may be integral with shaft 12 and roller 11 is secured thereto either by a screw 14 engaging an axial slot 13 in the shaft or by a screw acting on the shaft 12 via an elastomeric (rubber) or plastics plug. <IMAGE>

Description

A JIG This invention relates to a jig for forming plastics sections used in model making. In model making strips of plastics material are used and it is difficult to form sections of very small dimensions, say 40 thousandths of an inch or even less.
The plastics strips are usually bonded or adhered together using an appropriate solvent.
The sections may be angle sections, T-sections, channel sections or H-sections.
The present invention is concerned in particular with providing a jig for assembling and forming plastics sections which are of very small dimensions although the use of the jig is not restricted to small dimensioned sections.
According to the present invention there is provided a jig for forming plastics sections for use in model making, the jig comprising a pair of end support members between which can be secured discs or plates of different dimensions whereby the discs or plates together with the end support members define a peripheral groove in the configuration of the section to be formed.
Preferably, the end support members are rollers, one of which comprises a shaft or spindle onto which the other can be secured.
Alternatively the rollers are both mountable on and demountable from the shaft or spindle and are securable thereon.
Preferably also the discs or plates are washers adapted to be removably slid onto the shaft or spindle, and the washers being circular and of varying diameters, whereby the end rollers and washers can be assembled to define a circumferential groove of the required sectional configuration.
The shaft or spindle may be slotted or grooved axially to receive a locking pin carried by the other end roller for securing the assembly of rollers and washers together. Alternatively the shaft or spindle is partly screw threaded so that the other roller can be screw engaged thereon with the washers between the two end rollers.
Alternatively and preferably the other roller is simply locked in position by a locking screw acting on the shaft or spindle, preferably through the intermediary of an elastomeric (rubber) or plastics plug to prevent the locking screw from damaging the shaft or spindle. The locking screw may engage the shaft or spindle radially or radially offset (chordally).
It is to be clearly understood that both rollers may be removably fixed on the shaft or spindle by any of the aforesaid means.
If necessary formations can be formed on the rollers to facilitate tightening by the user's fingers or by a tool where the roller or rollers are screw engaged on the shaft or spindle.
Preferably the jig is formed of aluminium.
The jig may alternatively be formed of an engineering plastics material.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawing, in which: Fig. 1 shows one embodiment of two end rollers for a jig in perspective view; Fig. 1A is a view of a modification of the jig of Fig Fig. 2 is a similar view of another set of end rollers; Fig. 3 is a side view showing the jig used to form an angle section; Fig. 4 is a side view showing the jig used to form a T-section; and Figs. 5 to 7 are perspective views of alternative plastics sections which can be made using the jig according to the present invention.
A jig for use in forming plastics sections for model making comprises (see Fig. 1) two end rollers 10 and 11 formed of aluminium and with the roller 10 having an integral shaft or spindle 12 axially slotted as indicated at 13.
The roller 11 is adapted to be slid onto the shaft or spindle 12 and on its circumference mounts a locking screw 14 adapted to be engaged in the axial slot or groove 13 in the shaft or spindle 12 to secure the roller 11 in position on the shaft or spindle 12.
A modification and a preferred construction of the jig of Fig. 1 is shown in Fig. 1A. Here the shaft or spindle 12A is not slotted and the roller llA is secured on the latter by a locking screw 14A through the intermediary of a rubber plug 14B to prevent the locking screw 14A from damaging the shaft or spindle llA.
Alternative end rollers are shown in Fig. 2.
The roller 15 is formed with a partly screw threaded shaft or spindle 16 and the roller 17 is formed with a screw threaded bore 18 whereby the roller 17 can be screw engaged on the shaft or spindle 16.
The non-screw-threaded part 16A of the shaft or spindle 16 is to accommodate the washers referred to later.
Formations 19 are formed on the rollers 15 and 17 to facilitate tightening of the roller 17 on the shaft 16, but the formations 19 can be omitted. They form no part of the present invention.
The other components of the jig are aluminium washers 20 and 21 of differing diameters.
It can be seen from Fig. 3 how, by selecting appropriate washers 20, 21, a circumferential groove 22 of L-section can be formed in the jig. By locating two strips of plastics material designated 23, 24 in the required configuration the jig can be rolled along the strips, in the manner of a tram-line for example, and the user can apply, by means of a fine brush, a bonding or adhering solvent to the junction of the strips 23, 24, usually rearwardly of the travelling jig which the user rolls over a surface such as a workbench on which the plastic strips 23, 24 are laid in the desired relationship.
Considering Fig. 3 it will be manifest that if the other end washer 21A is dimensioned in correspondence with the washer 21 then a further strip 25 of the plastics material can be assembled to the plastic strips 23, 24 to form a channel section (see Fig. 6) Referring now to Fig. 4 it can be seen how a T-section can be formed using plastic strips 26, 27 with a smaller diameter washer 21 sandwiched between two larger diameter washers 20.
Waste plastics material can be dissolved in the solvent and applied over the surface of the assembled section of whatever configuration to provide an extra strong bonding cement.

Claims (12)

1. A jig for forming plastics sections for use in model making, the jig comprising a pair of end support members between which can be secured discs or plates of different dimensions whereby the discs or plates together with the end support members define a peripheral groove in the configuration of the section to be formed.
2. A jig as claimed in claim 1, in which the end support members are rollers, one of which comprises a shaft or spindle onto which the other can be secured.
3. A jig as claimed in claim 1, in which the end members are rollers, both of which are mountable on and demountable from a shaft or spindle and are securable thereon.
4. A jig as claimed in any one of claims 1 to 3, in which the discs or plates are washers adapted to be removably slid onto the shaft or spindle, and the washers being circular and of varying diameters, whereby the end rollers and washers can be assembled to define a circumferential groove of the required sectional configuration.
5. A jig as claimed in claim 4, in which the shaft or spindle is slotted or grooved axially to receive a locking pin carried by the other end roller for securing the assembly of rollers and washers together.
6. A jig as claimed in claim 4, in which the shaft or spindle is partly screw threaded so that the other roller can be screw engaged thereon with the washers between the two end rollers.
7. A jig as claimed in claim 4, in which the other roller is locked in position by a locking screw acting on the shaft or spindle, preferably through the intermediary of an elastomeric (rubber) or plastics plug to prevent the locking screw from damaging the shaft or spindle.
8. A jig as claimed in claim 7, in which the locking screw engages the shaft or spindle radially or radially offset (chordally).
9. A jig as claimed in any one of claims 5 to 8 in which formations are formed on the rollers to facilitate tightening by the user's fingers or by. a tool where the roller or rollers are screw engaged on the shaft or spindle.
10. A jig as claimed in any one of claims 1 to 9 formed of aluminium.
11. A jig as claimed in any one of claims 1 to 9 formed of engineering plastics material.
12. A jig for forming plastics sections for use in model making, substantially as hereinbefore described with reference to the accompanying drawing.
GB8826914A 1988-11-17 1988-11-17 Jig for joining plastics sections Withdrawn GB2225980A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8826914A GB2225980A (en) 1988-11-17 1988-11-17 Jig for joining plastics sections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8826914A GB2225980A (en) 1988-11-17 1988-11-17 Jig for joining plastics sections

Publications (2)

Publication Number Publication Date
GB8826914D0 GB8826914D0 (en) 1988-12-21
GB2225980A true GB2225980A (en) 1990-06-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB8826914A Withdrawn GB2225980A (en) 1988-11-17 1988-11-17 Jig for joining plastics sections

Country Status (1)

Country Link
GB (1) GB2225980A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007076558A1 (en) * 2005-12-28 2007-07-05 Bogoljub Bozic Vacuumed-formed or injected sub shell for static reinforcement of bathub shell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007076558A1 (en) * 2005-12-28 2007-07-05 Bogoljub Bozic Vacuumed-formed or injected sub shell for static reinforcement of bathub shell

Also Published As

Publication number Publication date
GB8826914D0 (en) 1988-12-21

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