WO2003002315A1 - Method and apparatus for making finger joints continuously - Google Patents
Method and apparatus for making finger joints continuously Download PDFInfo
- Publication number
- WO2003002315A1 WO2003002315A1 PCT/FI2002/000569 FI0200569W WO03002315A1 WO 2003002315 A1 WO2003002315 A1 WO 2003002315A1 FI 0200569 W FI0200569 W FI 0200569W WO 03002315 A1 WO03002315 A1 WO 03002315A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blank
- interlocked
- cut
- saw
- preliminarily
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
- B27M3/002—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected at their ends
-
- 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
- B27F1/16—Making finger joints, i.e. joints having tapers in the opposite direction to those of dovetail joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G13/00—Cutter blocks; Other rotary cutting tools
- B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting
- B27G13/14—Cutter blocks; Other rotary cutting tools for profile cutting for cutting grooves or tenons
Definitions
- the invention relates to a method and apparatus for making finger joints continuously, by means of which method or apparatus a number of pieces of wood to be interlocked end-on-end by means of finger joints are combined to form a blank of desired length by exerting compressive force on the blank through the end faces of the blank during the hardening stage of the adhesive used in the joints of the blank.
- a disadvantage of the known solution is its slowness due to the discontinuous method of operation.
- the method relating to the invention is characterised in that the method includes the following stages
- the preliminarily interlocked blank is cut with a cut-off saw (5), the said saw being arranged to move at the moment of cutting at the same speed as the blank to be cut, and - the preliminarily interlocked pieces of wood (2) comprised in the cut blank are pressed together finally with a pressing device (6), the pressing device comprising at least one endless chain or belt (7), which is arranged to move parallel with the processing line, and which is divided by means of limiters (8, 10) connected to it either directly or indirectly into two or more, at least approximately equally large parts so that of the limiters at the ends of each part at least one is a limiter (10) moving by power means (9) attached to the chain or belt (7), and that in turn, at each such part of the chain or belt (7), between the said limiters, is arranged to take place the final pressing together of the parts of the blank by the power means (9), at the same time as the blank moves continuously at the desired speed.
- a feeding device for feeding the pieces of wood on the processing line to be interlocked so that they form a continuous, preliminarily interlocked blank
- the pressing device for pressing finally together the preliminarily interlocked pieces of wood comprised in the blank cut by means of the cut-off saw
- the pressing device comprising at least one endless chain or belt, which is arranged to move parallel with the processing line, and which is divided by means of limiters connected to it either directly or indirectly into two or more, at least approximately equally large parts so that of the limiters at the ends of each part at least one is a limiter moving by power means attached to the chain or belt, and that in turn, at each such part of the chain or belt, between the said limiters, is arranged to take place the final pressing together of the parts of the blank by the power means, at the same time as the blank moves continuously at the desired speed.
- Figure 1 shows the apparatus relating to the invention as a diagrammatic side view.
- Figure 2 shows the apparatus relating to the invention as a diagrammatic top view.
- Figure 3 shows a section along line III-III in Figure 1.
- Figure 4 shows a section along line IV-IV in Figure 3.
- Figures 1 and 2 show diagrammatically the apparatus for making finger joints continuously.
- a number of pieces of wood 2 to be interlocked end-on-end by means of finger joints 1 are combined into a blank of desired length by exerting compressive force on the blank through the end faces of the blank during the hardening stage of the adhesive used in the joints 1 of the blank.
- reference numeral 2 denotes the pieces of wood to be interlocked, provided with finger joint profiles at their ends.
- Reference numeral 3 denotes the feeding device by means of which the pieces of wood 2 on the processing line to be interlocked are fed so as to form a continuous, preliminarily interlocked blank.
- Reference numeral 4 denotes the feeding means which cause the preliminarily interlocked blank move at the desired speed on the processing line of the apparatus.
- the feeding rate effected by the feeding device 3 is higher than the feeding rate effected by the feeding means, due to which the individual pieces of wood 2 are pressed preliminarily against each other.
- the cut-off saw 5 is arranged to cut the preliminarily interlocked blank at a precisely predetermined point. At the moment of cutting, the saw is arranged to move at the same speed as the blank to be cut. Most preferably, both the saw 5 and the blank to be cut move in the direction of feed of the processing line during sawing. It is, however, also possible to stop the movement of the blank for the duration of the sawing, whereby also the saw 5 will remain stationary with the exception of the working movement.
- the apparatus On the processing line of the apparatus is provided at least one feeding means 4 on either side of the point of formation of the sawn groove 13 formed by the cut-off saw 5.
- the preliminarily interlocked pieces of wood 2 comprised in the blank cut by the cut-off saw 5 are pressed together finally by means of the pressing device marked generally by reference numeral 6.
- the pressing device 6 comprises two endless chains or belts 7 which are arranged to move in the direction of the processing line.
- a desired length can be selected for the blank to be pressed.
- the endless chain or belt 7 comprised in the pressing device 6 is arranged to travel around two chain or belt pulleys 11 arranged at a distance from one another.
- the belt pulleys 11 are supported in a fixed manner on the shafts 15, which are in turn supported on bearings at one end 16 on the body of the apparatus.
- One of the shafts 15 is provided with power means (not shown) to rotate the shaft and thus the endless chain or belt 7.
- the fixed limiter 8 on the pressing device 6 and the moving limiter 10 provided with power means 9 include a gripping part which is arranged to push into a slot 13 between two blanks formed by the cut-off saw 5, when the said slot arrives at the pressing device 6.
- the power means 9 When the blank is at the pressing device 6, the power means 9 is arranged to exert a force on the blank which acts in a direction parallel to the direction of movement 12 of the blank or in a direction opposite to the said direction.
- the power means 9 presses in the direction of movement 12 and, correspondingly, when a blank arriving at the pressing device 6 from the right is at the pressing device 6 as a whole, the power means 9 presses in a direction opposite to the direction of movement 12.
- Figure 3 shows a section along line III-III in Figure 1.
- a short piece of square hollow section inside which is fitted a power means 9 comprised in the example of Figure 3 of a hydraulic cylinder provided with a through-passing piston rod, the cylinder being fixed in an immobile manner to the square hollow section 17. Due to the through-passing piston rod, the surface area on the piston 18 is the same on both its sides and thus its force effect on both remains the same.
- the piston rods 19 of both power means 9 are connected at one end to the limiter 10. On the right-hand side in Figure 3, the supply and return of the hydraulic oil of the power means 9 is arranged to take place via the limiter 10.
- the power means 9 is shown in its other extreme position.
- the power means 9 begins to move towards its other extreme position together with the other power means 9 functioning at the same time, which power means 9 will then move the limiter 10, which will in turn effect a compressive force on the end of the piece of wood 2.
- exerting pressure in the cylinder space 21 will cause the limiter 10 to move in the opposite direction and thus the compressive force to be exerted on the end of the piece of wood 2 on the opposite side of the limiter 10.
- Figure 4 shows a section along line IV-IV in Figure 3.
- Figure 4 is described diagrammatically a guiding construction provided with adjustable walls 22-25 known from wood piece 2 planing machines, inside which the pieces of wood 2 travel and are finally pressed together between the fixed limiter 8 and the moving limiter 10 provided with power means 9.
- a winding device 26 is provided for each parallel power means 9, for both the inlet and return hoses, which winding devices make possible the unwinding of the hydraulic hose and correspondingly bring about the rewinding of the hydraulic hose onto the reel while the power means 9 move on a path determined by the chains or belts 7.
- the apparatus operates as follows.
- FIG 1 are marked sections A to E with arrows which depict the different stages of operation of the apparatus.
- section A takes place the feeding of individual pieces of wood 2 onto the processing line of the apparatus.
- the feeding device presses the pieces of wood 2 together into a preliminarily interlocked blank, which is cut off by a saw 5 synchronically with the movement of the chain or belt 7 of the pressing device in such a way that the limiter 8 pushes into the sawn groove 13, which is spread if necessary, while the chain or belt 7 of the pressing device 6 rotates on its path around the chain or belt pulleys 11 and while the blank proceeds in the direction of movement 12.
- the limiter 9 will then push into the sawn groove to be made next and thus the operation continues uninterrupted.
- section C the parts of the blank are pressed finally together between the fixed limiter 8 and the moving limiter 10 provided with power means 9. Section C naturally moves continuously in direction 12.
- Section D depicts a final, finished blank cut to fixed size with the saw 14.
- Section E depicts a stage at which the finished blanks are moved to the desired further processing stages or to intermediate storage.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20011374A FI110493B (en) | 2001-06-27 | 2001-06-27 | Method and apparatus for continuously creating finger joint joints |
FI20011374 | 2001-06-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003002315A1 true WO2003002315A1 (en) | 2003-01-09 |
Family
ID=8561511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2002/000569 WO2003002315A1 (en) | 2001-06-27 | 2002-06-27 | Method and apparatus for making finger joints continuously |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI110493B (en) |
WO (1) | WO2003002315A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126308A (en) * | 1964-03-24 | brockerman etal | ||
US3602275A (en) * | 1967-10-03 | 1971-08-31 | Richard Bent Nissen | Woodworking machine |
US3790427A (en) * | 1970-12-08 | 1974-02-05 | A Marstrand | Apparatus for joining wooden parts |
US3802986A (en) * | 1972-03-23 | 1974-04-09 | Publishers Paper Co | Method and means for making a composite board from lumber pieces |
US3927705A (en) * | 1973-08-16 | 1975-12-23 | Industrial Woodworking Mach | Methods and means for continuous vertical finger jointing lumber |
-
2001
- 2001-06-27 FI FI20011374A patent/FI110493B/en active
-
2002
- 2002-06-27 WO PCT/FI2002/000569 patent/WO2003002315A1/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126308A (en) * | 1964-03-24 | brockerman etal | ||
US3602275A (en) * | 1967-10-03 | 1971-08-31 | Richard Bent Nissen | Woodworking machine |
US3790427A (en) * | 1970-12-08 | 1974-02-05 | A Marstrand | Apparatus for joining wooden parts |
US3802986A (en) * | 1972-03-23 | 1974-04-09 | Publishers Paper Co | Method and means for making a composite board from lumber pieces |
US3927705A (en) * | 1973-08-16 | 1975-12-23 | Industrial Woodworking Mach | Methods and means for continuous vertical finger jointing lumber |
Also Published As
Publication number | Publication date |
---|---|
FI110493B (en) | 2003-02-14 |
FI20011374A0 (en) | 2001-06-27 |
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