EP1574276B1 - Saw table for plates or something similar - Google Patents

Abstract

The table has a base (10) defining a work plane, and two supports (13, 14) with wooden rods having constant transversal section. Two grooves (16, 17) are formed on a side of the base for receiving the supports. The grooves are made in different side rails (21, 22) of a frame (20) that delimits an empty space (23). A spacer integrates a bar, including a handle, with a side of the side rail (21).

Description

The present invention relates to tables for sawing, cutting, etc. panels or the like, and more particularly tables easily transportable anywhere and can be used for many other functions.

It is known that when realizing buildings or furniture, it is often necessary to saw and / or cut wood panels. Most of the time, these panels are cut and prepared in the factory on tables specially designed to meet any demand. However, it is obvious that these tables can in no way be transported for use on construction sites.

Also, the workers have mini-workbenches, trestles, etc. at their disposal. they carry with them to support the panels or the like that they must cut, because there are currently no tables specifically designed for sawing, including cutting, these panels, which are easily transportable, foldable stable and adaptable especially to many other functions than sawing. Such a table is for example described in US 5 144 994.

Also, the present invention is intended to provide a panel sawing table or the like, which overcomes the disadvantages of similar tables known from the prior art and which meets the above mentioned goals.

More specifically, the present invention relates to a table for sawing panels or the like in accordance with the appended claim 1.

• La figure 1 représente, sous forme schématique, dans une vue en perspective cavalière, un mode de réalisation de la table de sciage selon l'invention,
• La figure 2 représente, dans une vue en coupe transversale, une partie d'un autre mode de réalisation de la table de sciage selon l'invention,
• La figure 3 représente une vue en coupe schématique transversale de la table de sciage selon l'invention en accord avec le mode de réalisation illustré sur la figure 1, permettant d'expliciter des avantages de cette table de sciage,
• La figure 4 représente un schéma permettant d'expliciter certaines caractéristiques structurelles de la table de sciage selon l'invention, et
• La figure 5 représente, en vue de dessus, un autre mode de réalisation de la table de sciage selon l'invention, perfectionné par rapport aux modes de réalisation illustrés sur les figures 1 à 4.

Other characteristics and advantages of the invention will appear in the course of the following description given with reference to the accompanying drawings for illustrative but not limiting purposes, in which:

• FIG. 1 represents, in schematic form, in a cavalier perspective view, an embodiment of the sawing table according to the invention,
• FIG. 2 represents, in a cross-sectional view, a part of another embodiment of the sawing table according to the invention,
• FIG. 3 represents a cross-sectional schematic sectional view of the sawing table according to the invention in accordance with the embodiment illustrated in FIG. 1, making it possible to explain the advantages of this sawing table,
• FIG. 4 represents a diagram making it possible to explain certain structural characteristics of the sawing table according to the invention, and
• FIG. 5 represents, in a view from above, another embodiment of the sawing table according to the invention, improved with respect to the embodiments illustrated in FIGS. 1 to 4.

It is first of all specified that, in the figures, the same references designate the same elements, whatever the figure on which they appear and whatever the form of representation of these elements. Similarly, if elements are not specifically referenced in one of the figures, their references can be easily found by referring to another figure.

The table according to the invention for sawing panels 1 or the like comprises a base 10 defining a working plane Pt, feet means 11 and means 12 for mounting these feet means in cooperation with the base 10.

According to a feature of the invention, the table further comprises at least two martyrs 13, 14, ... not located on the same axis, each martyr 13, 14 being constituted by a rod made of a material that can easily be cut by a saw blade 50 without damaging it, for example wood or the like, the rod having a substantially constant cross-section and substantially rectangular shape throughout its length, the sections of the two rods being further substantially identical. The table thus further comprises two grooves 16, 17 made on the same face 18 of the base 10 to respectively receive the two martyrs 13, 14, the width of these grooves being at least equal to the width of the cross section of the rods , and their depth less than the length of this cross section.

It is mentioned above that the two martyrs must not be located on the same axis, that is, they can not be collinear. They may be parallel, as shown in Figure 1, or between them a non-zero angle, so that they can define a support for a panel or the like and determine a lift polygon of a non-zero area. This is how are described below other embodiments in which, for safety, the levitation polygon has a maximum area.

According to a preferred embodiment, the base 10 defined above is formed, Figures 1 and 3, a frame 20 consisting of longitudinal members 21, 22, ..., the two grooves 16, 17 being respectively formed in two different longitudinal members. 21, 22.

Advantageously, as illustrated, the frame 20 comprises four longitudinal members substantially forming a rectangular figure or the like and delimiting an empty through space 23 whose function and advantages will be underlined hereinafter.

As mentioned above, the table comprises feet means 11. These feet means are constituted, as illustrated in Figures 1 and 3, by two feet 31, 32 formed of rods, plates or the like and the means 12 to mount these two feet 31, 32 in cooperation with the base 10 are constituted, for each foot, for example, by a hinge 33, 34 mounted in cooperation respectively with a spar 21, 22, ... and the upper end 35 of foot. The hinge and the foot associated therewith are arranged so that the foot is able to assume two positions, a first so-called "output" position, shown in broken lines in FIG. 3 and in continuous lines in FIG. 1, in which it is substantially perpendicular to the working plane Pt and a second so-called "retracted" position, shown in continuous lines in FIG. 3, in which it is substantially housed at least partially in the empty space 23 delimited by the frame 20.

Of course, in a manner known per se, each foot is associated with at least one linear or knee-type compass, for example, the ends of which are pivotally mounted respectively on the foot and on a frame spar, advantageously in the space 23 defined above. These compasses, of which only one has been schematically represented at 39 in FIG. 3, are well known in themselves and can be made in different ways. They will not be more fully described here, for the sole purpose of simplifying the present description.

In another advantageous embodiment possible, as shown in Figure 2, the table comprises at least one bar 40 and at least one spacer 41 for securing the bar on a side 42 of one 21 of the longitudinal members 21, 22,. .., from so that the bar is parallel to this side of the spar, at a non-zero distance from it and below the work plane Pt.

The table could have several of these bars distributed on the sides of the frame 20, but only one is generally sufficient.

This bar 40 has two main advantages: it is a handle for transporting the table, it has a single frame 20 or two foldable frames on one another as described below, and it also allows obtain an enlargement of the support of the panel to be sawn.

Indeed, the table then further comprises at least one cam 43 adapted to be positioned in the space 44 between the bar 40 and the beam 21 with which it is associated, so that the cam 43 rests with its lower end 45 below the spar 21 and its middle portion 46 on the bar 40, and the face 48 of its upper end 47 is located substantially in the work plane Pt.

In this way, as illustrated in FIG. 2, the sawing panel 1 rests on the tops of the two mats 13, 14, with an offset portion resting on the face 48 of the upper end 47 of the cam 43.

The means described above make it possible to keep the panel substantially in a horizontal plane, even if it is flexible like a wooden panel or the like and of dimensions greater than those defined by all the martyrs 13, 14 on a frame 20 .

According to an advantageous embodiment, in order to use all the martyrs to the maximum of their possibility, the depth of the grooves 16, 17 is substantially equal to half the length of the cross section of the rods defined above. . In this way, when martyrs are too slashed by the saw blades, it is possible to turn them by pushing in the grooves the notched parts, the parts of the martyrs emerging from the grooves being intact and can be used for a new series of cuts, sawn timber, etc.

As mentioned previously, the base 10 consists of a frame 20 like that illustrated in FIG. 1. In the embodiment illustrated in this figure, the table has only two martyrs 13, 14. However, it is advantageous for to be able to safely carry out many cuts of all shapes, that the table includes four martyrs mounted in cooperation in four grooves made respectively in the four longitudinal members. The four martyrs define a support defined along a closed line that is continuous or substantially continuous, preventing a flexible panel from undergoing a curvature, as with the embodiment according to FIG. 1 between the two martyrs 13 and 14, when one proceeds at his cut.

In the embodiments described above, the table comprises a single frame 20. It is however advantageous, for the application to the cutting of large panels, that the table comprises at least two frames 20 advantageously identical, each formed four spars, and means for mounting the two frames pivoting relative to each other so that they can fold over one another, and unfold to form a single workplan. The means for pivoting the two frames relative to each other will be mounted, for example, in cooperation with the spar opposite to that on which is fixed the bar 40 described above.

With a table as described above, to proceed to the cutting of a panel, simply unfold the feet 31, 32 so that the base is located at height of man relative to the ground, then to put the panel on the martyrs 13, 14, ... and hold it relative to the base by means of pliers, clamps, etc. The saw blade 50 is then prepared, for example a circular saw, FIG. 4, to give it a given cutting height H, for example in a manner known per se, by means of a friction pad 51. This height section H is determined so that when the pad 51 rubs on the upper face of the panel 1, it is greater than the thickness E of the panel and that, when the saw blade is moved to perform the cutting, the part 52 the blade emerging below the panel does not enter the beams 21, 22, ..., but only the upper part 53 of the martyrs 13, 14, ... which can be changed when they are too nicked.

Under these conditions, for a cutting height H by means of a saw 50, a thickness E of the cutting board less than H, and a groove depth P, the rods forming the martyrs are determined so that the length L of their cross section defined above satisfies the following relationship: H <E + L - P. In the advantageous case described above where L = 2P, the rods forming the martyrs are determined so that the length L of their cross section check the following relation: 2H - E <L.

The table according to the invention also has the following advantage: the empty space 23 delimited by the frame 20 can constitute a storage space for all the tools necessary for cutting the panels, for example clamps, clamps , saw blades, etc.

According to an improved embodiment such as that illustrated in FIG. 5, the table according to the invention furthermore comprises at least two crosspieces 101, 102 mounted integral with the frame 20 between two longitudinal members 21, 22, ... opposite thereof. so that they are substantially parallel to each other. It is even advantageous that other sleepers are provided, such as those shown between these two cross members 101, 102.

The table also comprises at least two measuring rulers 103, 104, each having graduations G, for example lines defining millimeters or the like, and means 110 for mounting a first end 111, 112 of each of the two measurement rules 103, 104 in cooperation with respectively the frame 20 and the two cross members 101, 102.

These means 110 may be of different types, for example a hook integral with the rule which is plugged into a crossbar and one or more pawls secured to the frame that block the rule on and / or relative thereto.

The table also comprises a reference rule 120 which serves as a guide, for example to a circular saw or the like, for cutting for example a panel P shown in broken bold lines in FIG.

Also provided are means 130 for setting this reference rule 120 above the first ends 111, 112 of the two measurement rules 103, 104 so that it is substantially perpendicular to these measurement rules. These fixing means 130 may also be of any type, but may advantageously consist of pins integral with these first ends and projecting above the two measurement rules and orifices made in the reference rule 120 in which can plunge the pins.

Finally, there is provided a support rule 140, means 150 for slidingly mounting above the two measurement rules 103, 104 so that it further comprises a projecting portion in the space 105 defined between these two measurement rules 103, 104, and means 160 for blocking this support rule 140 on the two measurement rules in a determined position between their ends.

These means 150, 160 respectively of sliding mounting and blocking of the support rule 140 may be constituted by means of any type. Advantageously, they will consist of a dovetail groove or the like made in each measuring rule 103, 104 and a key whose head is slidably mounted in the groove and whose rod passes through the support rule 140, with means for blocking together, the key, the support rule that it passes through and the measuring ruler in which it slides in translation, for example a wing nut mounted screwed on the stem of the key by being supported on the support rule 140.

A table according to the invention in the embodiment described above with reference to FIG. 5 is used in the following manner. The user can start by placing the two measurement rules 103, 104 by fixing them on the two crosspieces 101, 102. It is clearly specified that the length of these two measurement rules is determined to be able to meet the usual needs in this area. . In FIG. 5, these rules are of sufficient length to extend well beyond the frame 20.

To cut the panel P to a determined length, the user slides the support rule 140 to bring it to a position corresponding to the determined length, the latter being identified by the graduations G carried by the two measurement rules 103, 104, so that the distance separating the section line L of the support rule 140 is equal to this determined length.

The user can position one or more martyrs M on the auxiliary crosspieces such as the two crosspieces 101, 102. He then positions the panel P to cut so that it bears against the support rule 140, as shown in FIG. FIG. 5. It should be noted that the panel is disposed in the space 105 delimited by the measurement rules 103, 104 whose height is determined so that it is always greater than the thickness of the panels to be cut and that these panels come to bear on the part of the supporting ruler projecting into the space 105.

The user then positions the reference rule 120 by means of the orifices and pins, as described above. Of course it can also place this rule 120 before placing the panel P. It can then, with a circular saw that slides along the reference ruler 120, cut the following P panel the cut line L, the martyr M avoiding that the saw blade cuts the auxiliary crosspieces.

The method of use of the table according to the invention described above has been given only as an example. It is obvious that the order of implementation of the various elements is only indicative and that, particularly depending on the size of the panels to be cut and / or the various tools that it has at its disposal, the a person skilled in the art will know how to modify this order for the best possible use of the table.

It is also obvious that, with one or other of the embodiments described above of the table according to the invention, it is possible to safely cut panels of any size.

Claims (11)

1. A bench for sawing panels (1) or the like, the bench comprising a base (10) defining a work plane (Pt), leg means (11), and means (12) for mounting said leg means in co-operation with said base (10), at least two sacrificial pieces (13, 14, ...) not situated on a common axis, each sacrificial piece (13, 14) being constituted by a strip of material suitable for being easily cut into by a saw blade (50) without damaging it, said strip having a cross-section that is substantially constant and of substantially rectangular shape over its entire length, the sections of the two strips also being substantially identical, and two grooves (16, 17) made in the same face (18) of said base (10) to receive the two sacrificial pieces (13, 14) respectively, the width of said grooves being not less than the width of the cross-section of said strips, and the depth of the grooves being less than the length of said cross-section, the bench being characterized by the fact that said base (10) is formed by a frame (20) made up of rails (21, 22, ...), said two grooves (16, 17) being made respectively in two different rails (21, 22).
2. A bench according to claim 1, characterized by the fact that said frame (20) has four rails substantially constituting a rectangular figure defining an empty through space (23).
3. A bench according to claim 2, characterized by the fact that the leg means (11) are constituted by two legs (31, 32), and the means (12) for mounting said two legs (31, 32) in co-operation with said base (10) are constituted, for each leg, by:

   a hinge (33, 34) mounted to co-operate respectively with a rail (21, 22, ...) and the top end (35) of said leg, said hinge and said leg associated with said hinge being arranged so that said leg is suitable for taking up two positions, an "extended" first position in which the leg is substantially perpendicular to the work plane (Pt), and a "retracted" second position in which said leg is substantially received, at least in part, in said empty space (23) defined by said frame (20).
4. A bench according to any one of claims 1 to 3, characterized by the fact that it includes at least one bar (40) and at least one spacer (41) for securing said bar to one side (42) of one (21) of the rails (21, 22, ...), in such a manner that said bar is parallel to said rail side, at a non-zero distance therefrom and below the work plane (Pt).
5. A bench according to claim 4, characterized by the fact that it includes at least one cam .(43) suitable for being positioned in the space (44) lying between said bar (40) and the rail (21) with which it is associated, such that said cam (43) rests via its bottom end (45) beneath said rail (21) and via its middle portion (46) on said bar (40), and the face (48) of its top end (47) is situated substantially in the plane of the work plane (Pt).
6. A bench according to any one of claims 1 to 5, characterized by the fact that the depth of said grooves (16, 17) is substantially equal to half the length of said cross-section.
7. A bench according to any one of claims 2 to 6, characterized by the fact that it has four sacrificial pieces mounted to co-operate in four grooves formed respectively in the four rails.
8. A bench according to any one of claims 2 to 7, characterized by the fact that it comprises at least two frames (20) each formed by four rails, and means for mounting the two said frames to pivot relative to each other in such a manner as to enable them to be folded one on the other, and to be unfolded so as to form a single work plane.
9. A bench according to any one of claims 1 to 8, characterized by the fact that for a depth of cut H using a saw blade (50), a thickness E of the panel for cutting that is less than H, and a groove depth P, the strips forming the sacrificial pieces are designed in such a manner that the length L of their cross-section satisfies the following relationship: $$\mathrm{H}\mathrm{<}\mathrm{E}\mathrm{+}\mathrm{L}\mathrm{-}\mathrm{P}$$

   
10. A bench according to claims 6 and 9, characterized by the fact that when L = 2P, the strips forming the sacrificial pieces are designed so that the length L of their cross-section satisfies the following relationship: $$\mathrm{2}\left(\mathrm{H}\mathrm{-}\mathrm{E}\right)\mathrm{<}\mathrm{L}$$

    
11. A bench according to any preceding claim, characterized by the fact that it further comprises:

    at least two cross-members (101, 102) mounted secured to the frame (20) between two opposite rails (21, 22, ...) thereof so as to be substantially mutually parallel;

    at least two measuring rulers (103, 104);

    ·means (110) for mounting a first end (111, 112) of each of the two measuring rulers (103, 104) to co-operate with said frame (20) and said cross-members (101, 102), respectively;

    · a reference ruler (120);

    · means (130) for securing said reference ruler (120) above the first ends (111, 112) of said two measuring rulers (103, 104) in such a manner that said reference ruler is substantially perpendicular to said measuring rulers;

    · a bearing ruler (140);

    · means (150) for mounting said bearing ruler (140) slidably over said two measuring rulers (103, 104) so that it includes a portion projecting into the base (105) defined between said two measuring rulers (103, 104); and

    · means (160) for blocking said bearing ruler (140) on the two measuring rules in a determined position between their ends.

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