JPH0243684Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for cutting wood into a flat shape, and particularly to a device that can cut a narrow or small piece-shaped wood surface smoothly.

[Prior art and its problems] A conventional planar cutting device for woodworking is shown in FIG. In this device, a rotating cutter roll 82 is disposed in the middle of a horizontal substrate 81. The cutting blade provided on the outer periphery of the rotating cutter roll 82 protrudes somewhat from the upper surface of the substrate 81, and is transferred along the substrate 81 only to a thickness corresponding to the amount of protrusion. wood 8
This device for cutting the lower surface of the wood 83 can cut the lower surface of the wood 83, which is sufficiently wide compared to the gap d of the substrate 81 provided with the rotating cutter roll 82, into a completely flat surface. However, if the wood 83 is narrower than or close to the gap d of the board 81,
The lower surface cannot be cut flat and cannot be used for cutting small pieces or narrow pieces of wood. That is, as shown in FIG. 8, almost all of the narrow wood is located in the gap between the substrates 81, and the area pressed against the top surface of the substrate 81 is narrow, so that the wood 83 is not pressed against the top surface of the substrate 81. It cannot be held horizontally. sloping wood 8
In No. 3, the cutting blade cuts deeply into the wood, and as shown in FIG. 8, the front edge hits the corner of the gap, making it impossible to transfer the material smoothly. Therefore, the conventional device is limited by the minimum width of the wood that can be plane-cut by the distance of the gap d, and cannot cut small pieces of wood. Gap d
By narrowing d, thin wood can be cut, but in order to narrow the gap, it is necessary to reduce the diameter of the rotating cutter roll, and in reality, the gap d between the substrates cannot be narrower than about 15 mm, so it is possible to cut wood narrower than 25 mm. It was not possible to cut a flat surface.

For this reason, the small pieces of cut ends that occur in large numbers in woodworking factories cannot be used effectively, resulting in a disadvantage that the yield of wood is poor.

[Purpose of the invention] This invention was developed with the aim of eliminating these drawbacks of conventional plane cutting equipment.The important purpose of this invention is to cut even narrow pieces of wood along the substrate. To provide a planar cutting device for woodworking which can be conveyed in parallel, can cut narrow or small pieces of wood into a flat surface, and can efficiently cut the wood by transferring the wood smoothly.

[Means for Solving Conventional Problems] The planar cutting device for woodworking of this invention consists of a planar substrate onto which wood is transferred, and a rotating cutter roll from which a cutting blade protrudes from the upper surface of the substrate. The cutting blade of the rotating cutter roll also cuts the surface of the wood that is being transported along the surface of the substrate. A plurality of rotating cutter rolls are provided, and the plurality of rotating cutter rolls are arranged so as to be spaced apart from each other in the direction in which the wood is transported, and their rotational axes are perpendicular to the direction in which the wood is transported. Furthermore, each rotating cutter roll has a cutting blade on its outer periphery that is divided into a plurality of parts in the axial direction so as to cut the lower surface of the wood into multiple rows of grooves, and has a non-cutting part between each of the divided cutting blades. death,
The diameter of the non-cut portion is such that it is disposed within the substrate.
The diameter is narrower than the diameter of the cutting blade.
In addition, so that the entire lower surface of the wood can be cut by the front and rear rotating cutter rolls, the cutting blade of the rotating cutter roll located at the rear in the direction of movement of the wood is located behind the non-cutting part of the rotating cutter roll located at the front, Furthermore, the cutting width or the total cutting width of the cutting blades located at the rear is adjusted to be greater than the width of the non-cutting portion of the rotating cutter roll located at the front. Furthermore, a board is provided extending horizontally between the cutting blades so that the wood to be cut by the cutting blades is held and transferred horizontally. located behind the
This rotary cutter roll has a guide protrusion with a height equal to the protrusion of the cutting blade, and the cutting blade of the rear rotary cutter roll is adjusted to the same height as this guide protrusion, so that the cutting depth of the front and rear rotary cutter rolls is adjusted to be equal to the height of the guide protrusion. are adjusted to be the same or almost the same,
The cutting blades of all rotating cutter rolls cut the bottom surface of the wood into a flat surface.

[Operation and Effect] The plane cutting device of this invention does not cut the plane of wood all at once, but cuts the plane of the wood in multiple steps. To explain with a specific example, as shown in the cross-sectional view of FIG. 5, the lower surface of the wood 1 is first cut into parallel grooves with the cutting blade 10 of the front rotating cutter roll, and then, as shown in FIG. The remaining portion is cut by the cutting blade 10 of the rotating cutter roll, and the remaining part is cut into a flat shape by the front and rear rotating cutter rolls 3. The rotating cutter roll 3 cuts the lower surface of the wood 1 into a plurality of grooves.
As shown in FIG. 1, the cutting blades 10 are divided in the axial direction, and the space between each cutting blade 10 is narrow.
The board extends horizontally into this part. Therefore, the lower surface of the wood is cut into a large number of grooves while moving along the upper surface of the substrate between the cutting blades 10. That is, the substrate has a portion that connects in the transport direction of the wood, and also has a flat surface that supports the lower surface of the wood in the portion where the rotating cutter roll is provided. Therefore, no matter how narrow the width of the wood, it can be horizontally transferred along the top surface of the substrate and cut into a flat bottom surface without falling into the gap between the rotating cutter rolls as in conventional devices. Therefore, it is possible to effectively reuse wood that could not be flat-cut using conventional equipment and would otherwise have been discarded.

Furthermore, it has the advantage of being able to smoothly and efficiently cut the plane of narrow wood without hitting the gaps in the board.

[Preferred Embodiment] Hereinafter, an embodiment of this invention will be described based on the drawings.

The planar cutting device for woodworking shown in FIGS. 1 to 3 consists of a planar substrate 2 to which wood 1 is transferred, a rotating cutter roll 3 with a cutting blade protruding from the top surface of the substrate 2, and an upper part of the substrate 2. and a transfer belt means 4 arranged at the.

The board 2 is horizontally fixed to the upper surface of the main body, and the front board 2A on the side where the lumber 1 is fed is attached to the main body via a lifting means. The elevating means includes any mechanism that can hold the front board 2A horizontally and move it up and down, for example, as shown in FIG.
A plurality of threaded rods 5 extend vertically downward from the bottom surface of A.
are fixed, screw a nut 6 into each threaded rod 5, support this nut so that it can rotate freely but not move up and down, and connect the chain 7 with the outer periphery of all the nuts as a chain sprocket. Alternatively, a mechanism can be used in which the threaded rod 5 is moved up and down by connecting it to the rotating handle shaft 8 via a worm gear 9 and rotating all the nuts 6 together with the chain 7.

The device that adjusts the relative vertical movement position between the substrate 2 and the rotating cutter roll can adjust the cutting depth of the lower surface of the wood while the rotating cutter roll is stopped.

As shown in FIG. 1, the substrate 2 has a plurality of through holes 1 from which a plurality of divided cutting blades 10 protrude from the upper surface.
1 is drilled. The through-holes 11 are opened so as to be separated in the wood transport direction into those for the rotary cutter roll located at the front and those for the rotary cutter roll located at the rear. The front and rear through holes 11 have cutting blades 10 protruding from them.
The rear through-holes 11 are arranged between the front through-holes 11, that is, behind the non-cutting part of the front rotating cutter roll, so that the entire lower surface of the transported wood is uniformly cut. Moreover, the width of the rear through-holes 11 is wider than the interval between the front through-holes 11.

Further, as shown in FIGS. 1 and 2, the substrate is placed behind the cutting blade 10 of the front row of rotating cutter rolls so that the lower surface of the wood 1 is cut to the same depth by the front and rear rotating cutter rolls 3. The cutting blade 10 of the rear rotating cutter roll has a guide protrusion 17 with a height equal to the protrusion amount of the cutting blade 10 of this rotating cutter roll.
is adjusted to be equal to the height of

There are two rotating cutter rolls 3, and both ends are supported by the main body via bearings (not shown) so that they are horizontally spaced apart from each other in the direction of transporting the wood, and their rotational axes are perpendicular to the direction of transporting the wood. ing.

The front and rear rotating cutter rolls 3 have a cutting blade 10 on the outer periphery divided into a plurality of parts in the axial direction, and have a non-cutting part between each of the divided cutting blades 10. In FIG. 1, the front rotating cutter roll 3 is 6
two cutting blades 10, a rear rotating cutter roll 3
is divided into five cutting blades 10. The cutting blade 10 protrudes from the through hole 11 of the substrate 2 onto the substrate and cuts the lower surface of the wood. The non-cutting portion located between the cutting blades 10 is located within the substrate 2 and has a diameter smaller than the outer circumference of the cutting blade 10 so as not to protrude from the substrate 2.

The number of divisions of the cutting blade of the rotary cutter roll 3 is determined by taking into consideration the overall width of the rotary cutter roll and the size of the wood to be flat-cut, particularly the total length (L) of the wood. As the number of divisions increases, a shorter piece of wood can be cut flat, but the shape of the cutting blade 10 becomes more complex. Normally, the number of divisions of the cutting blade 10 is 50 to 20 cm in width of the wood cutting surface.
It is divided into 3 to 15 parts. Also, cutting blade 10
The width W of the cutting blade 10 and the interval S of each non-cutting part are
Considering the number of divisions and the total length of the wood to be cut, the former is usually determined to be 10 to 100 mm, and the latter to be approximately 8 to 90 mm.

The front and rear rotary cutter rolls 3 shown in FIGS. 1 to 3 cut the lower surface of the wood twice, as shown in FIGS. 5 and 6, to flatten the entire lower surface. That is, the cutting blade 10 of the front rotating cutter roll cuts the lower surface of the wood 1 in parallel grooves as shown in FIG. , the remaining part is cut off, and the entire lower surface of the wood 1 is uniformly cut into a flat surface using the cutting blades 10 of the front and rear rotating cutter rolls.
Therefore, the cutting blade 10 of the rear rotating cutter roll
The cutting position is located behind the non-cutting part of the front rotating cutter roll, and the cutting blade 10 at the rear
The width W is set to be greater than the interval S between the non-cutting parts of the front rotating cutter roll, and preferably, as shown in FIG.

The front and rear cutting blades 10 cut the lower surface of the wood to the same or almost the same depth. Therefore, the heights of the front and rear cutting blades 10 relative to the substrate 2 are adjusted to be the same or almost the same. The height of the cutting blade 10 relative to the substrate 2 can be determined by supporting the rotary cutter roll 3 on a vertically movable up-and-down table (not shown) or by supporting the substrate 3
It can be adjusted by supporting it so that it can move up and down. In order to support the rotating cutter roll 3 in a vertically movable manner, for example, a vertical stand to which the rotating cutter roll 3 is attached via a bearing is supported by a vertical mechanism shown in FIG. 4. The front and rear rotating cutter rolls 3 are
If the height of each roll can be adjusted separately, rotating cutter rolls with different diameters can be used.

The cutting blade of the rotating cutter roll can have a structure similar to conventional ones, such as being integrated with the rotating cutter roll and processing a part of the outer periphery of the rotating cutter roll into a cutting blade shape, or fixing another blade.

The front and rear rotating cutter rolls are connected to a motor 12, and are rotated by this motor 12 in a direction opposite to the wood transport direction, that is, to the left in FIG.

Although the plane cutting apparatus shown in FIGS. 1 and 2 cuts the lower surface of the wood 1 using two rotating cutter rolls 3, the number of rotating cutter rolls 3 may also be three or more. In this case, each of the plurality of rotating cutter rolls cuts the lower surface of the wood into a groove shape of a required width, and all of the rotating cutter rolls cut the entire lower surface of the wood to a uniform depth to perform plane cutting. Therefore, in this case, the cutting position of the rear rotating cutter roll is located behind the non-cutting part of the front rotating cutter roll, and the total cutting width of the rear rotating cutter roll is the same as the cutting position of the rear rotating cutter roll. Adjusted to the width of the cutting part or more, all rotating cutter rolls cut the entire underside of the wood into a flat surface.

For example, the wood 1 can be transferred while being pressed by hand along the guide protrusion 17 provided on the upper surface of the substrate 2, but as shown in FIG. It is easy and safe to transport wood. This transfer belt means 4
are two rolls 13 disposed above the substrate 2.
And the endless belt 14 hung on this roll 13
and a press roll 15 that presses the endless belt 14 against the wood 1. The two rolls 13 are disposed above the substrate 2 so as to be vertically movable via an elevating means (not shown), and one of the rolls 13 is connected to a deceleration motor 16 . The deceleration motor 16 drives the roll 13, the roll 13 moves the belt 14, and the pressure roll 15 moves the belt 14 to the substrate 2.
Transfer the wood by pressing on the wood above.

The plane cutting device for woodworking configured in this way is
The substrate 2 is also transferred by the transfer belt means 4 . The lower surface of the wood 1 is cut into parallel grooves by a rotating cutter roll 3 at the front. After that, the bottom of the cut groove of the wood 1 is further transferred along the guide protrusion 17, and the cutter roll 3 at the rear rotates the wood 1.
The uncut portion is cut to a depth equal to the depth of the cut groove, and the entire lower surface is cut into a flat surface. That is, the wood 1 cut by the front rotary cutter roll 3 is transferred along the guide protrusion 17 with the bottom of the cut groove serving as a reference surface, and is transferred to the rear rotary cutter roll whose height is equal to the guide protrusion 17. 3, the lower surface of the wood is cut to the same depth as the rotating cutter roll 3 in front. Therefore, the heights of the front and rear rotating cutter rolls 3 are adjusted to be completely or approximately equal to the height of the guide protrusion 17.

[Brief explanation of the drawing]

1 to 3 are a plan view, a side view, and a front view of a planar cutting device for woodworking showing an embodiment of this invention, FIG. 4 is a sectional view showing a vertical movement mechanism of the board, and FIGS. FIG. 6 is a cross-sectional view showing the state in which two rotating cutter rolls cut the lower surface of wood, and FIGS. 7 and 8 are a perspective view and a side view of a conventional planar cutting device for woodworking. 1...Wood, 2...Substrate, 2A...Front board, 3
... Rotating cutter roll, 4 ... Transfer belt means, 5 ... Threaded rod, 6 ... Nut, 7 ... Chain, 8 ... Rotating handle shaft, 9 ... Worm gear, 10 ... Cutting blade, 11 ... Penetration Hole, 12...
Motor, 13...Roll, 14...Endless belt, 15...Press roll, 16...Deceleration motor, 17...Guide protrusion, 81...Substrate, 82...
...Rotating cutter roll, 83...Wood.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a planar substrate on which wood is transferred and a rotating cutter roll with a cutting blade protruding from the top surface of the substrate, the cutting blade of the rotating cutter roll can also be used to cut along the surface of the substrate. In a device that cuts the surface of wood that is being transported by a machine, there are multiple rotating cutter rolls that are spaced apart from each other in the direction in which the wood is being transported, and the rotating shafts are arranged perpendicular to the direction that the wood is being transported. Furthermore, each rotating cutter roll has a cutting edge on its outer periphery divided into multiple parts in the axial direction, and has a non-cutting part between each of the divided cutting blades, and the diameter of the non-cutting part is equal to the diameter of the cutting blade. Furthermore, the cutting blade of the rotating cutter roll located at the rear in the direction of wood travel is located in the non-cutting part of the rotating cutter roll located at the front, and the cutting blade located at the rear The cutting width or the total cutting width of the cutting blades is greater than or equal to the width of the non-cutting part of the rotating cutter roll located in front, and furthermore, a substrate is provided extending horizontally between the cutting blades, and the substrate is , having a guide protrusion located behind the cutting blade of the rotating cutter roll in the front row and having a height equal to the protrusion amount of the cutting blade of the rotating cutter roll,
The cutting blades of the rear rotating cutter roll are adjusted to be equal to the height of this guide protrusion, and the cutting depths of the front and rear rotating cutter rolls are adjusted to be the same or almost the same. A planar cutting device for woodworking, characterized in that it is configured to cut the lower surface of wood into a planar shape. (2) The plane cutting device for woodworking according to claim 1, wherein one rotating cutter roll is divided into 3 to 15 cutting outer circumferences. (3) Scope of utility model registration claim 1, where the width of the cutting periphery is 10 to 100 mm and the interval between cutting blades is 8 to 90 mm.
A plane cutting device for woodworking as described in Section 1. (4) Utility model registration claim No. 1, in which the board is divided into front and rear parts, and the front board can be adjusted up and down.
A plane cutting device for woodworking as described in Section 1.