FR2680719A1 - Method and machine for the treatment of wooden panels for the purpose of manufacturing furniture - Google Patents

Abstract

Method and machine for the treatment of wooden panels. Machine of the type composed of a bed (table) (1) on which there is mounted a guide rail (2), characterised by the fact that the bed (1) has a parallelogram shape with, on one of the sides, in its middle, a board (4) perpendicular to the longitudinal axis; a guide rail (2) is located over all of its length on the other side. This guide rail (2) receives the prepared edge of the panel (3) to be treated, the bed (1) is provided, at its end which forms the supply board (5), with a means (6) for pulling the panel (3) along the bed (1); retractible rollers, mounted on a deformable parallelogram, facilitate the sliding of the panel (3); a set of retractible movable saws (7, 8) serves to reduce the width and length of the panel (3); a set of drills (11, 12) provides vertical drilling, another set of drills (11, 12) provides horizontal drilling, limit stops (13, 14, 15) position the panel (3) in the longitudinal direction. Manufacture of furniture.

Description

 The invention relates to a method and a machine for the treatment of wooden panels for the manufacture of furniture.

 The invention makes it possible, from wooden panels, to treat each panel one by one in order to cut it in different directions, to pierce it along different axes, without having to manipulate the panel several times and by optimizing the cuts in large widths, so as to reduce unnecessary waste of wood.

 The reduction in handling of the panels results in a reduction in labor costs and a reduction in the risk of deterioration of the fragile wooden panels.

 Currently, in the carpentry industry, the basic elements for the manufacture of furniture are wooden panels.

These basic panels can be handled by two people. In general, they are handled for each operation on a different machine, cutting, drilling, etc. The panels being processed are bulky and therefore increase stocks.

 Currently, the use in the profession is as follows: the preparation of the various wooden panels used in the realization of a piece of furniture supposes that the panels are first of all cut from an entire panel while trying to reduce the falls of wood, then passed successively through the different machines that perform the individual operations.

 If a series of parts is required, all the machines are adjusted to perform the specific operations, the settings being modified for each series of parts to be carried out.

 The invention tends to avoid all of these drawbacks.

The state of the art can be defined by the following patents:
- FR-A-2.527.497: "Bench comprising a chassis with two parallel rails joined at the ends by spacers for guiding a mobile device such as a circular saw, comprising means for fixing the panel to be machined and sliding securing means of the sole of the apparatus so that said sole is in a plane parallel to that of the panel spaced or not from the upper surface of the panel Application as a portable bench for sawing or machining a panel, in any position. "
- FR-A-2. 584.650: "Flat & horizontal panel saw for cutting wood and plastic panels of different dimensions. The invention relates to a frame on four retractable legs allowing to receive a panel to be cut with a commercial power saw, on this frame is placed the panel & cut, on which we will put a sawing rule which is fixed in the screeds, allowing a transverse or longitudinal cut. The invention can be used in stationary sawing with the same power saw. particularly practical and handy for cutting wood and plastic on construction sites and in workshops. "
- FR-A-2.520.068: "This process allows the assembly of wooden parts to constitute a piece of furniture, without the need for tenons, mortises, grooves, tongues, pins, spikes, staples or gluing by the use of counter- forms whose internal face matches the external form of the parts & assembling, against which they are applied and of a mold engaged against these counter-forms by constituting an empty space in which is injected under pressure a cellular foam filling all this space until to constitute a rigid monobloc. "
- FR-A-2.561.162: "The invention relates to a method of manufacturing furniture using chipboards such as wood fiber panels possibly coated with a veneer on their visible face. Firstly, we inlay blocks of solid wood in a virgin chipboard panel, then in a second step, the entire outer surface of the panel thus encrusted is coated with a veneer and finally in a third step, the blocks inlaid are sculpted by machining the panel coated with its plating. Application to the furniture industry. "
- FR-A-2.585.655: "The device presented allows vertical handling of wooden, laminate, plastic, cement, plaster, glass, etc. panels of large dimensions. The new characteristic of this device is to block the panel in the vertical position, forming a rigid assembly and thus facilitating its movement without risk of overturning. Two vertical jaws secured to a chassis, one of which is movable, approach each other under the weight of the panel The movable jaw is guided by a slide and returned to the open position automatically by a spring.

The device is intended for all trades working with large panels: carpenters, cabinet makers, furniture manufacturers, installers of partitions, false ceilings, glaziers, etc ... "
- FR-A-2.618.192: "The invention relates to methods of assembling furniture. It exclusively uses the use of threaded rods, washers and nuts associated with holes and grooves in the parts to be assembled As shown in FIG. 7, the threaded rods passing right through the holes, grooves, washers and nuts make it possible to assemble, by tightening, the uprights and crosspieces and to immobilize the shelf in space. elements (including threaded rods, washers and nuts) constituting the furniture produced by the present assembly system can be made of wood, metal and plastics having satisfactory mechanical strengths.

 This assembly system applies to the manufacture of the most diverse pieces of furniture intended for domestic, commercial use, in the tertiary sector, as well as in transport vehicles.

 The method according to the invention is intended for the production of all types of furniture made from wooden panels, or particles of wood, sold in various sizes and presentations, by a non-specialist operator.

 The process has three phases, all necessary for the final realization.

 - A / - the pre-cutting of industrial panels to convenient dimensions to ensure storage, handling by a single person, passage through the manufacturing machine, all taking into account construction requirements.

 In summary, all the panels supplied in the place of operation are supplied to a defined module. In addition, and in order to facilitate the recognition of the position of installation on the machine by the operator, a edge of the panel (border) is coated with a coating similar to that of the surfaces of the panel.

 - B / - The computer processing of the dimensions of furniture to be executed with immediate preparation of the estimate and transmission (automatic or assisted) of information concerning the final dimensioning and assembly drilling.

 - C / - The re-cutting and the complete preparation of the treated panel on a machine (described below).

 The main innovation concerns the work process on the machine, which consists of placing a work panel on a table at the entry end of the machine and not lifting, turning and generally changing the axis and the position of installation of the panel until its complete elaboration and finishing on the exit plane of the table at the other end of the machine.

 In the process described and, unlike existing methods, each part to be executed is produced from panels of similar size, the single machine being automatically adjusted for this purpose.

The advantages, in addition to the ease of handling, being to eliminate the layout (operation intended to make the most of an initial panel called the base panel)
A related advantage lies in the possibility of making a re-cutting and drilling machine with a smaller footprint than existing machines.

 Another notable advantage that appears compared to traditional working methods lies in the process of moving from one workstation to another, which avoids a major drawback in the preparation of fragile panels (especially melamine-faced chipboard). This drawback being the chipping of the sections of the panels as a result of repeated handling.

 The information provided by the client (plan, sketch) is entered into computer software on a computer, then after processing transmitted to the machine which performs the processing of the panels.

 Additional information is given to the operator who has the sole task of selecting the panels in a rack, then placing said panel on the machine, the processing operations carried out by the machine, the operator removes the panel thus treated. All the panels treated by the machine are given to the customer with an assembly manual and the accessories for assembling the furniture.

 The machine for implementing the process described above for the treatment of wooden panels or wood particles or the like for the manufacture of furniture is of the type composed of a table which forms the work surface on which is mounted a guide rail which guides the advancement of the panel during its treatment, characterized in that the table has a shape of parallelogram, with on one side, in the middle, a plate perpendicular to the longitudinal axis, a rail guide is arranged in its entire length on the other side, this guide rail receives the prepared edge of the panel to be treated, the table is provided at its end which forms the supply plate of a means of traction of the panel which ensures its displacement, along the longitudinal axis on the table, along the table of the retractable rollers mounted on a deformable parallelogram facilitates the sliding of the panel on the table, a set of mobile retractable saws s used to reduce the width and length of the panel to the desired dimensions, a cross-cutting saw has its axis of rotation parallel to the guide rail, another saw with longitudinal section has its axis of rotation perpendicular to the guide rail, the latter saw is mounted on a mobile carriage transversely to the machine, said saws are provided with a double device which makes it possible to suck the cutting dust. A set of drills mounted on a movable arm provides vertical drilling, another set of drills mounted on another movable arm provides horizontal drilling, stops position the panel if necessary in the longitudinal direction.

 The means of traction of the panel on the machine table is composed of claws articulated on a mobile towing rule actuated forwards or backwards by a motor. Said towing rule is arranged transversely on the table.

 The saw with longitudinal cut has its axis of rotation perpendicular to the guide rail, it is mounted on a mobile carriage which slides on the slides of a window provided for this purpose in the plate perpendicular to the longitudinal axis of the table.

 Each sawing unit is placed on a mobile carriage, each carriage has an articulation axis which allows the saw / motor unit to pivot by approximately 30, so as to retract and free the table after the phase of sawing, raising the assembly, the cutting time, is carried out by cams and rollers.

 The retraction of the saws under the table reduces the total length of the table.

 The attached drawings are given as indicative and non-limiting examples. They represent a preferred embodiment according to the invention. They will allow the invention to be easily understood.

 Figure 1 is a perspective view of the machine seen from above.

 Figure 2 is a view of the retracting means of a saw which leaves free the work plan of the machine, according to this view the saw is retracted.

 Figure 3 is a view of the retraction means according to Figure 1, but where the saw is in the raised position.

 Figure 4 is a sectional view along the axis AA shown in Figure 1 of the saw / mobile carriage assembly, whose axis of rotation is perpendicular to the guide rail, in longitudinal section. The figure highlights the transverse movement of the saw and the double device which allows to suck the cutting dust. The saw is at a distance d from the guide rail.

 Figure 5 is a view of the assembly shown in Figure 4, but where the saw is at a distance D from the guide rail.

 FIG. 6 is a sectional view of the means of traction of the panel to be treated seen along the cutting axis BB shown in FIG. 1.

 The machine for implementing the method as described in Figures 1, 2, 3, 4 and 5 allows furniture to be manufactured.

This furniture is made from wood panels or wood particles or the like. It is essentially composed of a table 1 which forms the work surface on which is mounted a guide rail which guides the advancement of the panels 3, during its treatment.

 Table 1 has the shape of a parallelogram with, on one of its sides, in the middle, a plate 4, perpendicular to the longitudinal axis of the table. A guide rail 2 is arranged along the entire length of the table, on the other side. This guide rail 2 receives the prepared edge of the panel 3 to be treated. The table 1 is provided at its end which forms the supply plate 5 of a means of traction 6 of the panel 3 on the table I. A set of saws 7, 8, mobile, retractable, serves to reduce the width and the length of panel 3 to the desired dimensions. A saw 8 with transverse movement has its axis of rotation parallel to the guide rail 2. The other saw 7 with longitudinal section has its axis of rotation perpendicular to the guide rail 2. The latter saw 7 is mounted on a movable carriage 9 transversely machine. Said saws 7 and 8 are provided with a double device 10 which makes it possible to vacuum the cutting dust.

 A set of drills 11, mounted on a movable arm, provides vertical drilling. Another set of drills 12, mounted on another mobile arm, provides horizontal drilling. The traction means 6 of the panel 3 on the table 1 of the machine is composed of claws 16, articulated on a towing rule 6, mobile, actuated forward or backward by a motor and a set of belts 17 and pulleys 18. Said towing rule 6 is arranged transversely on the table 1.

 The saw 7 with longitudinal section has its axis of rotation perpendicular to the guide rail 2; it is mounted on a mobile carriage 9 which slides on the slides 21 and 22 of a window 19 provided for this purpose in the plate perpendicular 4 to the longitudinal axis of the table 1. Each sawing assembly is placed on a mobile carriage 9; each carriage has a hinge pin 20 which allows the saw / motor assembly to pivot by about 30, so as to retract and release the table 1, after the sawing phase. The lifting of the whole, the cutting time, is carried out by cams and rollers. The retraction of the saws 7, 8, under the table 1, makes it possible to reduce the total length of said table.

 Stops 13, 14, 15 position the panel 3 in the longitudinal direction if necessary.

 REFERENCES 1. Table 2. Guide rail 3. Panels 4. Tray 5. Supply tray 6. Traction means 7. 8. Saws 9. Movable carriage 10. Double suction device 11. Drill set ensuring drilling vertical 12. Drill unit ensuring horizontal drilling 12. Drill unit 13.14.15. Stops 16. Claws 17. Set of belts 18. Set of pulleys 19. Window 20. Axis of articulation 21. 22. Slides

Claims (5)

 1. Process intended for the production of all types of furniture made from wood panels, or particles of wood, sold under. various dimensions and presentations, by a non-specialist operator characterized by the fact  that it comprises three phases, all necessary for the final realization.  - C / - The re-cutting and the complete preparation of the treated panel on a machine.  - B / - Computer processing of the dimensions of furniture to be executed with immediate preparation of the estimate and transmission (automatic or assisted) of information concerning the final dimensioning and assembly drilling,  - A / - the pre-cutting of industrial panels to convenient dimensions to ensure storage, handling by a single person, passage through the manufacturing machine, all taking into account construction requirements,  2. Machine for implementing the method according to claim 1 described for the treatment of panels (3) of wood or wood particles or the like for the manufacture of furniture, of the type composed of a table (1) which forms the work surface on which is mounted a guide rail (2) which guides the advancement of the panel (3) during its treatment, characterized by the fact  that the table (1) has a shape of parallelogram, with on one of the sides, in the middle, a plate (4) perpendicular to the longitudinal axis, a guide rail (2) is disposed along its entire length on the on the other hand, this guide rail (2) receives the prepared edge of the panel (3) to be treated, the table (1) is provided at its end which forms the supply plate (5) with a traction means (6 ) of the panel (3) which ensures its displacement, along the longitudinal axis on the table (1), along the table (1) retractable rollers mounted on a deformable parallelogram facilitates the sliding of the panel (3) on the table (1), a set of movable retractable saws (7, 8) is used to reduce the width and length of the panel (3) to the desired dimensions, a saw (8) with transverse movement has its axis of rotation parallel to the guide rail (2), another saw (7) with longitudinal section has its axis of rotation perpendicular to the guide rail (2), the latter 1st saw (7) is mounted on a mobile carriage (9) transversely to the machine, said saws (7, 8) are provided with a double device (10) which makes it possible to suck up the cutting dust; a set of drills (11, 12) mounted on a movable arm provides vertical drilling, another set of drills (11, 12) mounted on another movable arm provides horizontal drilling, stops position the panel (3) if necessary in the longitudinal direction.  3. Machine for implementing the method according to claim 1 characterized in that  that the traction means (6) of the panel (3) on the table (1) of the machine is composed of claws (16) articulated on a movable towing rule (6) actuated forwards or backwards by a motor, said rule tractor (6) is arranged transversely on the table (1).  4. Machine for implementing the method according to claim 1 characterized in that  that the saw (8) with longitudinal section has its axis of rotation perpendicular to the guide rail (2), it is mounted on a mobile carriage (9) which slides on the guides of a window (19) provided for this purpose in the plate (4) perpendicular to the longitudinal axis of the table (1).  5. Machine for implementing the method according to claim 1 characterized in that  that each sawing assembly is disposed on a mobile carriage (9), each carriage (9) has a hinge pin (20) which allows the saw / motor assembly to pivot by approximately 30, so as to be retract and release the table (1) after the sawing phase, the lifting of the assembly, the time of cutting, is carried out by cams and rollers.