JPH0446201B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for vertically sawing wood using a multi-shaft molder, and more specifically, a saw blade is attached as a rotary cutting means to the multi-shaft molder, Using the saw blade, the wood is vertically sawed leaving only a required thickness uncut, and the remaining uncut portion of the wood is removed by a rotary cutting means such as a plane barrel disposed downstream of the saw blade. This invention relates to a novel vertical sawing method for wood that produces a plurality of sawn pieces.

BACKGROUND ART Conventionally, woodworking machines such as circular saws and bandsaws have been used as means for sawing wood vertically. This circular saw is a chip saw that cuts wood into two vertically sawn pieces with one saw blade, and a plurality of saw blades arranged parallel to each other at required intervals in the axial direction of the rotating shaft to cut a large number of pieces of wood. It is divided into a gigantic saw, which is used to cut vertically sawed books. Vertical sawing of wood can also be carried out using a multi-spindle molder, and in this case, the planer barrel and other various cutters are arranged horizontally and at right angles to the wood feeding direction of the multi-spindle molder. Instead, a saw blade of the required diameter is attached, and this saw blade is used to saw the wood vertically. However, in either case, the cutting amount of the saw blade is set to be larger than the thickness of the wood.

Problems to be Solved by the Invention In order to vertically saw wood as described above using a multi-shaft molder, for example, in the multi-shaft molder 10 shown in FIG. Instead of the lower planer 14 provided, a saw blade 26 is attached to the rotary shaft 15 as shown in FIG. 6, and the protruding height l ₂ of the saw blade from the table is:
It is set to protrude above the thickness l ₁ of the wood 16 to be processed. Then, the saw blade 26 is rotated by a motor (not shown) to cut the wood 16 to be processed.
vertically sawn into two or more vertically sawn materials. However, in this case, since the effective cutting height l ₂ of the saw blade 26 is set to be larger than the thickness l ₁ of the wood 16 to be processed, the saw dust 22 discharged when cutting the wood 16 to be processed is directed above the wood. In addition, when the workpiece wood 16 is cut, the wood that has been cut into a plurality of pieces is scattered by the saw blade 2.
6 and bounced up, making it extremely dangerous to work with. Furthermore, it has been pointed out that the sawn wood vibrates or bounces, causing it to come into contact with the rotating saw blade 26 irregularly, damaging the end of the wood and making the cut surface defective. .

Purpose of the Invention The present invention has been proposed in order to suitably solve the above-mentioned drawbacks that are pointed out when performing vertical sawing using a multi-shaft molder. It is an object of the present invention to provide a novel vertical sawing method in which good recovery is achieved, there is no repulsion during cutting, and a good cutting surface is obtained.

Means for Solving the Problems In order to achieve the above object, the vertical sawing method using a multi-spindle molder according to the present invention provides a multi-spindle sawing method in which rotary cutting means are respectively disposed on the upstream side and the downstream side with respect to the feeding direction of wood. In the molder, a saw blade is attached as a rotary cutting means on the upstream side, and the saw blade performs vertical sawing by leaving a predetermined thickness of the wood uncut, and then another rotary cutting means disposed downstream of the saw blade The method is characterized in that the wood is vertically sawn into two or more boards by cutting and removing the uncut portion of the wood.

Embodiments Next, a method of vertical grinding using a multi-screw molder according to the present invention will be described in detail below with reference to preferred embodiments and the accompanying drawings. Fig. 1 is a side view of a multi-spindle molder that can carry out the method of the present invention, and Fig. 2 shows a case in which the method of the present invention is carried out by installing a gearing saw consisting of a plurality of saw blades in place of a rotary cutting body such as a lower planer. The explanatory longitudinal sectional views of FIGS. 3a to 3c are respectively the second
FIG. 3 is a cross-sectional view of the processed wood at positions corresponding to a to c in the figure. FIG. 4 is an explanatory longitudinal cross-sectional view when the method of the present invention is carried out by attaching the above-mentioned gearing saw in place of the top planer, and FIGS. 5 d to f correspond to the workpieces d to f in FIG. 4, respectively. It is a cross-sectional view of wood.

The multi-shaft molder 10 shown in FIG.
A lower planer 14 is disposed at a predetermined distance on the downstream side and upstream side with respect to the feeding direction of the wood 16 to be processed. This upper plane 12 and lower plane 1
4 is rotatably driven by a motor (not shown) and is connected to a lifting mechanism (not shown) so that it can be vertically moved up and down within a predetermined range. Further, reference numeral 18 indicates a side cutter for cutting both vertical side surfaces of the wood to be processed 16 that is transferred on the table 20 of the multi-axis molder 10.

To carry out the method of the present invention, for example, as shown in FIG.
Install Giyang Saw 24. The gearing saw 24 has a plurality of saw blades mounted in parallel at a predetermined distance in the axial direction of the rotating shaft 15 via a required number of spacers. The gearing saw 24 has a protruding amount (cutting height) l ₃ from the table 20 in the multi-spindle molder 10 as shown in FIG.
is set smaller than the thickness l ₁ of the wood 16 to be processed. With this setting, as the vertical sawing by the gigang saw 24 progresses,
The workpiece wood 16 has (l ₁ - l ₃ ) in its longitudinal direction.
There will be an uncut portion. Further, an upper planer 12 disposed downstream of the gigantic saw 24
The amount of cutting by the thickness of the uncut portion, that is, the thickness l ₁ of the wood 16 to be processed
Set it so that it is larger than the difference between the protrusion amount l and ₃ .

The wood 16 to be processed is vertically sawed by the multi-axis molder 10 configured as described above, as shown in the cross sections of FIGS. 3a to 3c. That is, the third cross-sectional view at the position corresponding to FIG.
The wood 16 to be processed shown in FIG. The wood 16 to be processed is vertically sawn with a predetermined thickness (l ₁ -l ₃ ) left uncut at the upper end. Next, the uncut portion of the wood 16 to be processed is removed by a plane 12 disposed downstream of the gigantic saw 24 and above the table 20. As a result, as shown in the cross section of FIG.
divided into.

Further, FIG. 4 shows another embodiment of the method of the present invention, in which the gearing saw 24 is used as the multi-axis molder 1.
It is attached to the rotating shaft 15 for the upper planer 12 of 0. In _this case, as _shown in FIG. The cutting amount of the lower planer 14 horizontally arranged on the downstream side of the saw 24 is determined by the difference (l ₁
−l ₄ ). In other words, the amount of protrusion of the lower planer 14 from the table 20 is made greater than the difference between the amount of cutting by the gigantic saw 24 and the wood 16 to be processed. With this configuration, the positions d to d in FIG. 5 corresponding to the positions d to f in FIG.
As shown in f, the wood 16 to be processed is vertically sawed by the gearing saw 24 with a predetermined thickness (l ₁ -l ₄ ) remaining at the lower end. Next, the wood 16 to be processed, with the lower end left slightly uncut, is vertically sawed by cutting it to a predetermined thickness using the lower planer 14 disposed on the downstream side. In this case, the chip 2 cut by the upper planer 12
However, by providing an appropriate dust collector, the chips 22 can be prevented from scattering.

In this embodiment, a gearing saw having a plurality of saw blades has been described, but the above-mentioned lip saw can also be suitably implemented in the same manner.

Effects of the Invention As described above, according to the method of the present invention, when the workpiece wood is vertically sawed using a multi-axis molder, the workpiece wood is still being sawn vertically by the gigang saw. Since the processed wood is not completely cut, there is no rebound or splash caused by the gearing saw, which ensures the safety of the worker, and also prevents damage to the cutting end of the processed wood, resulting in a good cutting surface. That's what you get.
If you install a Giang saw instead of a lower planer, the saw chips that are cut by the Giang saw will hit the uncut portion of the wood to be processed and fall downward.
No scattering on the table surface of the multi-axis molder.

[Brief explanation of drawings]

FIG. 1 is a side view showing the schematic structure of a multi-spindle molder that can suitably carry out the method of the present invention, and FIG. Explanatory longitudinal cross-sectional views when carrying out the method of the invention, FIGS. 3 a to c are respectively a to a of FIG.
Fig. 4 is a cross-sectional view of the wood to be processed at the position corresponding to c, Fig. 4 is an explanatory longitudinal sectional view when the method of the present invention is carried out by installing the above-mentioned Giang saw in place of the upper planer, and Figs. 5 d to f, respectively. FIG. 4 is a cross-sectional view of the processed wood corresponding to d to f in FIG. 4, and FIG. 6 is a vertical cross-sectional view illustrating a vertical sawing method according to the prior art.

Claims (1)

[Claims] 1. In a multi-spindle molder in which rotary cutting means are arranged on the upstream and downstream sides with respect to the feeding direction of wood, a saw blade is attached as the rotary cutting means on the upstream side, and the saw blade cuts the wood to a predetermined thickness. Vertically sawing the wood into two or more boards by vertically sawing the wood, and then cutting off the uncut portion of the wood using another rotary cutting means disposed downstream of the saw blade. A method for vertically sawing wood using a multi-axis molder.