JPH0464846B2 - Sawing device for board material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for sawing boards, in particular of the type made of natural stone, such as marble, with a honeycomb-like reinforcing layer. The planks are generally made by starting from a relatively thick natural material with the above-mentioned reinforcing layer, and by sawing this natural material, the plastic viscosity of the natural stone is It is possible to obtain finished products that are large and yet very thin.

[Conventional technology]

Such a product is described in particular in Canadian Patent No. 995918.

In order to produce said products, a device is known, for example from French patent application no. is moved relative to the device and the circular saw so that sawing is carried out through the center over its entire height and length.

Based on known techniques used for sawing through natural stone products, what is suggested for sawing through a board is to first saw the board over its entire length and half of its height, then saw the board 180 Rotate 0.2° and make a second saw cut to saw completely through the material. Such a device is known, for example, from EP 19419.

The main disadvantage of the first device described above lies primarily in the fact that a relatively large diameter saw must be used, which results in a relatively large thickness saw and the waste of material is relatively large. The second device aimed at alleviating the disadvantages of the first device relies on the use of two carriers, namely a sawn carrier and a rotating carrier, but this not only makes the device more expensive but also reduces the need for sawing. Placing the material alternately on one carrier and on the other has the disadvantage that it is very time consuming and the production costs are also relatively high.

Another serious drawback of this known second device is that it uses two saws at the same time, placed at a well-defined distance from each other, to ensure the efficiency of such a device, the cutting of two parts of the board One cut is made with simultaneous sawing and sawing halves, and the same material is cut with two different saws, but there is a misalignment between the saw cuts on both halves of the board due to uneven wear on each saw. The result is that

This not only entails additional machining and expense, as these deviations must subsequently be planed out with another machine, but in such a device, the gap between the two saw cuts is The gap quickly increases,
One or both of the saws must be renewed even if they are not yet completely worn out.

[Problem that the invention seeks to solve]

The object of the invention is to eliminate the above and other disadvantages of previously known devices and to provide a device which has the following main advantages:

1. No misalignment between saw cuts, eliminating additional machining of the saw cuts; 2. Relatively low tooling costs, as the saw can be used completely; 3. Time for installing and turning the plates. 4. The sawing and turning of the board is carried out on one and the same carrier with a relatively small sawing device.

[Means for solving problems]

The device according to the invention comprises a carrier comprising at least one rotary bed plate with one or several suction cups on a first side for holding the workpiece to be sawn in place; a workpiece on a second side; pressing means for holding the plate in place; fixing means for said board; an insert that can be placed during sawing of the saw cut of the upper half into the saw cut of the already sawn lower half; It consists of a means and a principal.

〔Example〕

In order to better explain the features of the invention, preferred embodiments will be described below, by way of non-limiting example and with reference to the accompanying drawings, in which: FIG.

The sawing device shown in FIGS. 1 to 6 essentially consists of a carrier 1 which can be moved on rails 3, 4 by means of a moving wheel 2, the carrier 1 having two recesses 5 and 6.
It consists mainly of flat rectangular frames each containing a

On the central part 7 of the carrier 1 there is provided a support 8 in which a shaft 9 is mounted and rotates about an axis A-A, each end of which carries a plate 10 and 11 respectively. However, each plate is provided with one or several suction cups 12 and 13 and a gear wheel (not shown) is mounted on the shaft 9, which work in conjunction with a gear wheel mounted on a common drive motor 14. , whose purpose is to move the plates 10, 11 around the axis A-A at the appropriate time.
It is to turn the .

Each of the small vertical sides of said plates 10 and 11 is provided with a triangular groove 15, 16 and 17, 18, respectively, as partially shown in FIG. and 22. These pins 19 to 22
are mounted on the free ends of the piston rods of pressure cylinders 23, 24, 25 and 26, each suitably mounted on the frame of carrier 1.

On the outside of the carrier 1 there is a suitable pressure cylinder 27,
28, 29 and 30 are mounted, and their piston rods are provided with pressing pieces 31, 32, 33 and 34, respectively, the purpose of which is to press the suction cups 12 and 13.
The sheet blanks 35 and 36 to be sawed, which are held in place against the plates 10 and 11 by means of the press elements 31 to 34, respectively, are to be additionally supported by these pressing elements 31 to 34.

Insert pieces 37 on both vertical edges of each plate material 35, 36,
38, 39 and 40 respectively, which are L-shaped as shown in FIG.
Piston rods 5, 46, 47 and 48 can each act in conjunction with the free ends of these L-shaped inserts.

Plates 35, 36 are suitably machined by saws 49 and 50, respectively, and stopped and driven in any suitable manner.

As shown in FIGS. 5 and 6, water injectors 51, the purpose of which will be explained below, are provided on each side of the saws 49 and 50, respectively.

FIGS. 7-9 show an embodiment similar to that of FIGS. 1-3, except that the outer surface of each blank 35, 36 has a support beam 52,
53, for example, a threaded rod 5
4, 55 against the blanks 35, 36, each of which cooperates with a nut 56 secured to a support 57.

11 to 13 show an embodiment in which the frame 1 is stationary, in which case only one plate is to be sawn and the saw is moved.

In fact, this device is comparable to half the device according to FIGS. 1 to 6 and therefore need not be described again.

According to FIGS. 1 to 3 or 7 to 9, two boards can be sawed with the carrier 1. In FIGS. But the first
According to FIGS. 1 to 13, the carrier 1 can also be used for sawing a single board.

However, in this case, the frame 1 includes the guide portion 59,
It can be moved exactly at right angles with respect to 60, with which guides 61, 62 mounted under the frame can cooperate. This additional possibility allows precise adjustment to the position of the board with respect to the saw.

Finally, FIG. 14 shows a variant of FIG. 4, in which the insert piece 39 is swung under the lower end 58 of the plates 35, 36 so as not to impede the lateral feeding of the plates relative to the carrier 1. position (awung−aside)
position).

[Effect]

The operation of this device is very simple.

Before the sawing operation begins, a layer of planks 35, 36 is attached to each plank 10, 11 by suction cups 12, 13, so that the planks 10, 11 and thus the planks 35, 36 are attached to the planks 10, 11. , 11 are held in position by keeping them immovable with respect to the frame or carrier 1 by fixing elements 19 through 22.

The plates 35, 36 are additionally pressed against the plates 10, 11 by the element 31 through 34.

At this time, the carrier 1 is displaced along the rails 3, 4 at an appropriate speed, and the plates 35, 36 are moved by the saws 49 and 50.
The saw is mounted so that the plates 35, 36 are sawed over more than half of their height.

After said sawing is completed, the carrier 1 is returned to its initial position, the pressing means 31 to 34 and the fixing means or pins 19 to 22 are retracted,
Next, the motor 14 moves the plates 10 and 11 together with the plates 35 and 36 by 180° in the recesses 5 and 6 on the axis A.
- rotation around A and then fixing means 19 to 2;
2 is first stretched again by pressure cylinders 45 to 48 to hold the plate in the correct position, and then the insert pieces 37 to 40 are stretched again, as can be seen in detail in FIG.
slides into the saw cut 52 already obtained, after which the pressing means 31 to 34 again press the plates 35, 3
6.

This means that the saw cutting part 63 is engaged by the insert pieces 37 to 40 in the area of the pressing means 31 to 34 and exerts an appropriate fixing force on the plate, so that the plate can be completely sawed in the next operating step. This is particularly useful when

In this case, for the second saw cut to be carried out, it is sufficient to displace the carrier 1 again with respect to the saws 49 and 50, so that it coincides smoothly with the first saw cut 63, so that the plate material 35, 36 is sawn through over its entire length and height, and the outer plates will be held in place by pressing means 31 and 34.

Especially during the second half saw cut machining,
As shown in Figures 5 and 6, one or several (in this case, two
Water injectors 51 are provided on both sides of the saw blades 49 and 50, respectively, to inject water at a constant pressure onto the saw blades, the water riding on the saw cutting section during sawing and thus causing pressure A thin frame is created between the saw and the saw cut to ensure a proper distance between the saw cut and the saw.

〔effect〕

It is clear that this provides a device that completely avoids misalignment between the two halves of the saw cut. The tool outlay is considerably lower, since one and the same saw cut is always made by the same saw, and no equalization operations due to saw differences are necessary and the saw is completely usable. Also, the efficiency of the machine is relatively high because it takes less time to turn the plate to be sawed. Furthermore, the entire device requires only a small installation space, since the two sawings and turning of the plate to be sawn can be carried out in a small space and with only one carrier.

It is clear that the invention is in no way limited to the embodiments described by way of example and shown in the accompanying drawings, and that such a device can be made in any shape and size without going beyond the scope of the invention. It is.

[Brief explanation of the drawing]

FIG. 1 shows a top view of the device according to the invention. FIG. 2a shows a side view of FIG. 1, and FIG. 2b shows a BB cross section of FIG. 2a. FIG. 3 shows a front view of FIG. FIG. 4 is a perspective view of the portion indicated by F4 in FIG. FIG. 5 is a schematic side view of a circular saw according to the invention working in conjunction with a water sprayer. FIG. 6 shows a schematic cross-sectional view along the line - of FIG. 5, taken on an enlarged scale. 7 and 11 show top views of the variant of FIG. 1. 8 and 12 show side views of FIGS. 7 and 11, respectively. 9 and 13 show front views of FIGS. 7 and 11, respectively. Figure 10 is arrow F in Figures 8 and 12.
10 shows a perspective view according to FIG. FIG. 13 shows a perspective view of the portion indicated by F13 in FIGS. 8 and 11. FIG. FIG. 14 shows a variant of FIG. 4. 1... carrier, 2... moving wheel, 5, 6... recess,
9... Axis, 10, 11... Rotating base plate, 12, 13
...Sucker, 14...Motor, 15, 16, 17,
18...Slot, 19,20,21,22...Fixing means (pin), 23,24,25,26...Pressure cylinder, 27,28,29,30...Pressure cylinder, 31,32,33, 34... Pressing disk, 35, 36... Plate material, 37, 38, 39, 4
0... Insertion means (piece), 49, 50... Saw blade, 6
1,62...Slider.

Claims (1)

Claims: 1. At least one plate with one or several suction cups 12, 13 on its first side for holding in place at least one of the plates 35, 36 to be sawn. a carrier 1 comprising a rotating bed plate 10, 11; pressing means 31, 32, 33, 34 for holding the plates 35, 36 in position on a second side; said bed plate 10, 1;
1 with fixing means 19, 20, 21, 22;
A saw for plate material, characterized in that it mainly consists of insertion means 37, 38, 39, 40, which can be slid into the saw cut of the already sawn lower half of the plate during sawing of the upper half of the plate. Biking device. 2. According to claim 1, the carrier 1 essentially consists of a horizontal flat rectangular frame containing a passage through which each plate to be sawn can be rotated. equipment. 3. The carrier 1 is provided with sliders 61, 62 or a moving wheel 2, and is movable in a plane parallel to the planes of the saw blades 49, 50. Device. 4. The carrier 1 is provided with sliders 61, 62 or a moving wheel 2, and is capable of moving in a plane perpendicular to the planes of the saw blades 49, 50. 3. The device according to item 3. 5 A support 8 is provided in the center of the carrier 1, and a shaft 9 is mounted therein and rotates, and this shaft is connected to the motor 1.
4, and at least one of the free ends of said shaft 9 is provided with said base plate 10, 11 having a suction cup 12, 13. Apparatus according to any of paragraph 4. 6. The pressing means for holding the plates 35, 36 are the pressing disks 3 mounted on the free ends of the piston rods of the pressure cylinders 27, 28, 29, 30.
1, 32, 33, and 34. The device according to any one of claims 1 to 5. 7. Claims characterized in that the pressing means 31, 32, 33, 34 are provided at both ends of the layered material or plate material 35, 36 at a height slightly lower than half the height of the plate material. Apparatus according to paragraph 6. 8 Said fastening means 19, 20, 21, 22 are arranged in grooves 15, 16 and 17, 18 in the vertical sides of said plates 10, 11 with suction cups 12, 13 and in the free ends of pressure cylinders 23, 24, 25, 26. Device according to claim 1, characterized in that it consists in combination with pins (19, 20, 21, 22) mounted thereon. 9 Said grooves 15, 16 and 17, 18 are made vertically in the opposite vertical edges of said plates 10, 11, the horizontal cross section of said grooves 15, 16, 17, 18 being triangular in shape, said pins 19, 9. Device according to claim 8, characterized in that it mates with the triangular ends of 20, 21, 22. 10 The insertion means 37, 38, 39, 40 are made of elongated steel pieces, the thickness of which is equal to or slightly smaller than the width of the saw cut.
9, 40 are hingedly attached to the frame of a support fixed to the carrier 1 and can be suitably moved in and out of the saw cut by means of a pressure cylinder The device described in. 11. Each of the saws 49, 50 for sawing through the half-height of said plates 35, 36 is provided with at least one water injector 51 on each side, between the saw and the adjoining saw cut. Claims 1 to 10, all ensuring that a suitable spacing is maintained between the saws and that the saw cut remains continuously open during sawing. equipment.