GB2290051A - Forming panel corners - Google Patents
Forming panel corners Download PDFInfo
- Publication number
- GB2290051A GB2290051A GB9411329A GB9411329A GB2290051A GB 2290051 A GB2290051 A GB 2290051A GB 9411329 A GB9411329 A GB 9411329A GB 9411329 A GB9411329 A GB 9411329A GB 2290051 A GB2290051 A GB 2290051A
- Authority
- GB
- United Kingdom
- Prior art keywords
- channel
- former
- panel
- web
- chipboard
- 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- Withdrawn
Links
- 239000011093 chipboard Substances 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000002023 wood Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 29
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
- F16B12/44—Leg joints; Corner joints
- F16B12/46—Non-metal corner connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
- B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
- B27F1/005—Machines or devices for working mitre joints with uneven ends
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
- F16B12/02—Joints between panels and corner posts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
Abstract
A corner is formed in a panel of wood material by culling a channel in a face of the panel, positioning a former 32 in the channel and folding the two portions of the panel on either side of the channel around the former, such that the corner adopts the contour of the former. The wood material may be plastics surfaced chipboard and all joining surfaces may be glue coated. <IMAGE>
Description
Method of forming corners in panels
This invention relates to a method of forming a corner in a panel of wood, chipboard or the like.
In constructing articles such as furniture or loudspeaker cabinets from chipboard, which require two exterior panel portions to meet at a corner of the article, it is known to make the panel portions from a single panel, by cutting a V-shaped channel in the inner face of the panel, and turning the panel portions on either side of the channel about the hinge formed by the channel. The V-shaped channel is usually formed with sides at 450 to the plane of the panel, so that the two sides make contact when the panel portions are at right angles to one another.
A disadvantage with the known method of forming corners in a panel is that it always results in a 'sharp' corner. The corner may also be weak, since the hinge formed by the V-shaped channel, usually consisting only of the material of the plastics veneer on the outer face of the chipboard, is bent through 90" during the construction.
It is an object of this invention to provide an improved method of forming a corner in a panel of wood, chipboard or the like.
This invention consists in a method of forming a corner in a panel of wood, chipboard or the like, comprising:
(a) cutting into the inner face of the panel to form a channel which divides the
panel into two panel portions joined by a web defining the bottom of the
channel, the thickness of the web being such that the web can flex,
(b) positioning in the channel a former having a face defining the contour of
the corner to be formed and two side faces positioned to engage the side faces
of the channel when the corner is formed,
(c) turning the panel portions to their desired positions, so that the web is
flexed around the former and lies against the contoured face of the former and
the side faces of the channel engage the side faces of the former, and
(d) fixing the panel portions in position.
Preferably, the channel has a rectangular cross-section, the side faces of the channel being flat and at right angles to the web, and the side faces of the former are flat and inclined to one another at the complement of the desired angle between the panel portionS.
Suitably, the panel portions are fixed in position by means of adhesive between the former and the channel.
In one form of the invention, the method includes the step of applying a bead of adhesive to the central portion of the web before placing the former in poSition, so that the adhesive is spread between the faces of the channel and the former as the web is flexed around the former.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figures 1 and 2 are cross-sections through a panel at two stages during the formation of a corner in accordance with this invention, and
Figures 3 and 4 are cross-sections as in Figures 1 and 2, but showing a second embodiment of the invention.
Referring to Figures 1 and 2, a panel 10 of chipboard is to be formed into a corner having two panel portions 12 and 14 positioned at right angles to one another. The panel has an inner face 16 and an outer face 18, to which is bonded a veneer 22 of plastics. The method of forming the corner is as follows.
A channel 24 of rectangular cross-section is cut into the inner surface 16 of the panel 10 by any suitable means, for example by use of a routing tool. The depth of the channel 24 is such that most of the material of the chipboard is removed from the channel, leaving a web 26 formed by a small thickness of chipboard 20 and the portion of the veneer 22 to which the chipboard 20 is bonded.
A channel shaped plastics extrusion 28 is then bonded into the channel using a suitable adhesive. The extrusion 28 is formed with a locating rib 30.
A rigid former 32 is then positioned in the channel 24. The former is a hollow plastics extrusion having a curved face 34 with a shape corresponding to the desired contour of the corner to be formed, and two flat faces 36 and 38 at right angles to one another, corresponding to the right angle at which the panel portions 12 and 14 are to be fixed. A locating profile 40 formed centrally in the curved face 34 engages the locating rib 30 of the extrusion 28 to locate the former 32 in the channel. Adhesive is applied between the former 32 and the channel 24.
The panel portions 12 and 14 defined by the channel 24 are then turned relative to one another to the desired position, as shown in Figure 2. As the panels are moved, the web 26 is flexed around the curved face 34 of the former 32, to take up the shape of the curved face, until the side faces 42 and 44 of the channel 24 engage the flat faces 36 and 38 of the former. The panel portions are fixed in their final position by the adhesive bond between the panel and the former, particularly the flat faces 36 and 38 of the former.
The thickness 20 of material forming, with the veneer 22, the web 26 is such that the web is sufficiently flexible to allow it to wrap around the former 32. In a modification of the method described, the material of the chipboard may be completely removed from the channel 24, leaving a web 26 formed only by the veneer 18. However, leaving a small thickness of the material increases the handling strength of the panel before it is wrapped around the former.
Figures 3 and 4 illustrate a second embodiment of the invention in which the extrusion 28 is omitted and a former 132 placed directly in a channel 124 cut into the inner face of the panel. A bead of adhesive is applied to the bottom of the channel 124 before the former 132 is inserted. As the web 26 is wrapped around the former 132, the progressive engagement of the web with the curved face 134 and flat faces 136 and 138 of the former spread the adhesive between those faces and the faces of the channel. During this operation, the adhesive has a lubricating effect, allowing the former to move sufficiently relative to the channel to enable it to be properly located in the channel. The lack of locating means, as provided in the embodiment of Figures 1 and 2, therefore does not prevent proper location of the former 132.
In the embodiment of Figures 3 and 4, the former 132 is a rigid former, for example made from medium density fibre board, which can be accurately profiled in the desired shape. However, the former could be made in other ways, for example as the plastics extrusion of the embodiment of Figures 1 and 2.
The curved face 34 of the former 32 need not be part-cylindrical as shown in the drawings. The face could have a non-uniform radius of curvature, and indeed could be of virtually any convex shape which allows the web 26 to flex around the face.
The method of the invention thus allows a curved or "moulded" corner to be formed which is more aesthetically pleasing than the corner formed by the conventional method. The corner may be stronger than that formed by the conventional method, the former providing reinforcement for the corner.
The described method can be used, for example, in manufacturing a loudspeaker cabinet, the top and bottom walls and two side walls of which are formed from a single panel of veneered chipboard, by cutting three channels at appropriate positions in the panel, inserting formers and forming three corners as described. A fourth former can then be bonded in place at the fourth comer and covered by a length of veneer extending from one end of the panel.
It will be appreciated that modifications could be made in the described embodiment.
The angle between the panel portions 12 and 14 in their final position could take any value between 0 and 1800, the angle between the flat faces 36 and 38 of the former 32 being selected accordingly.
If the flat faces 36 and 38 of the former 32 are made coplanar, and the overall width of the former is equal to twice the thickness of the panel 10, the panel portions will lie flat against one another in their final position. The invention can therefore be used to form a composite panel with one edge shaped to simulate a moulded edge.
The sides 42 and 44 of the channel 24 could be inclined to the plane of the panel, the angle between the flat faces 36 and 38 of the former 32 being adjusted accordingly.
The former 32 could be made in any suitable manner.
The method could be applied to panels other than veneered chipboard. The method could in some circumstances be applied to solid panels of wood, by cutting a channel in the panel to leave a web which is sufficiently think to enable it to flex to the desired extent.
Claims (9)
1. A method of forming a corner in a panel of wood, chipboard or the like, comprising:
(a) cutting into the inner face of the panel to form a channel which divides the
panel into two panel portions joined by a web defining the bottom of the
channel, the thickness of the web being such that the web can flex, (b) positioning in the channel a former having a face defining the contour of
the corner to be formed and two side faces positioned to engage the side faces
of the channel when the comer is formed,
(c) tuming the panel portions to their desired positions, so that the web is
flexed around the former and lies against the contoured face of the former and
the side faces of the channel engage the side faces of the former, and
(d) fixing the panel portions in position.
2. A method as claimed in claim 1, in which the channel has a rectangular crosssection, the side faces of the channel being flat and at right angles to the web, and the side faces of the former are flat and inclined to one another at the complement of the desired angle between the panel portions.
3. A method as claimed in claim 1 or claim 2, in which the panel portions are fixed in position by means of adhesive between the former and the channel.
4. A method as claimed in claim 3, which includes the step of applying a bead of adhesive to the central portion of the web before placing the former in pOsitiOn, so that the adhesive is spread between the faces of the channel and the former as the web is flexed around the former.
5. A method as claimed in any preceding claim, in which the panel is of chipboard having a veneer of plastics on the outer face, and the method includes forming the said channel so that the web is formed by a portion of the veneer and a small thickness of the material of the chipboard.
6. A method as claimed in any one of claims 1 to 4, in which the panel is of chipboard having a veneer of plastics on the outer face, and the method includes forming the said channel so that the web is formed solely by a portion of the veneer.
7. A method as claimed in any preceding claim, in which a shaped lining of plastics is bonded into the channel before the former is positioned in the channel.
8. A method as claimed in claim 7, in which cooperating locating means are provided on the lining and the former to locate the former in the channel.
Amendments to the claims have been filed as follows 5. A method as claimed in any preceding claim, in which the panel is of chipboard having a veneer of plastics on the outer face, and the method includes forming the said channel so that the web is formed by a portion of the veneer and a small thickness of the material of the chipboard.
6. A method as claimed in any one of claims 1 to 4, in which the panel is of chipboard having a veneer of plastics on the outer face, and the method includes forming the said channel so that the web is formed solely by a portion of the veneer.
7. A method as claimed in any preceding claim, in which a shaped lining of plastics is bonded into the channel before the former is positioned in the channel.
8. A method as claimed in claim 7, in which cooperating locating means are provided on the lining and the former to locate the former in the channel.
9. A method of forming a corner substantially as herein described with preference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9411329A GB2290051A (en) | 1994-06-07 | 1994-06-07 | Forming panel corners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9411329A GB2290051A (en) | 1994-06-07 | 1994-06-07 | Forming panel corners |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9411329D0 GB9411329D0 (en) | 1994-07-27 |
| GB2290051A true GB2290051A (en) | 1995-12-13 |
Family
ID=10756283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9411329A Withdrawn GB2290051A (en) | 1994-06-07 | 1994-06-07 | Forming panel corners |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2290051A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1712704A3 (en) * | 2005-03-15 | 2008-06-04 | Gary Cowling | A casing profile and a method of manufacturing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520911A (en) * | 1938-11-04 | 1940-05-07 | Richard Hubert Crouch | Improvement in round corners for use in cabinet work |
| GB686699A (en) * | 1950-06-01 | 1953-01-28 | Shrager Bros Ltd | Wood panels for use as doors or other parts of furniture |
-
1994
- 1994-06-07 GB GB9411329A patent/GB2290051A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520911A (en) * | 1938-11-04 | 1940-05-07 | Richard Hubert Crouch | Improvement in round corners for use in cabinet work |
| GB686699A (en) * | 1950-06-01 | 1953-01-28 | Shrager Bros Ltd | Wood panels for use as doors or other parts of furniture |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1712704A3 (en) * | 2005-03-15 | 2008-06-04 | Gary Cowling | A casing profile and a method of manufacturing same |
| GB2424231B (en) * | 2005-03-15 | 2010-01-27 | Gary Cowling | Casing profile and a method of manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9411329D0 (en) | 1994-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |