JP2003191201A - Material hold-down device in multi-blade sawing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a material hold-down device in a multi-blade sawing machine which easily changes a cutting space of each sawing blade, repeatedly uses a pressure plate, and reduces wasteful costs and resources needed for replacements. <P>SOLUTION: This multi-blade sawing machine exerts pressure on a wood material A to be cut moving on a conveyor passage 1 by means of a pressure plate 31 and simultaneously cuts the portions of the material A pressurized by the pressure plate 31 by a plurality of rotating saw blades 13, 15. The position of the axial direction of respective saw blades, 13, 15 is independently free to be adjusted by moving each of them, respectively so that the pressure plate 31 to pressurize the material A to be cut is made to be independently separated and is moved integrally with the corresponding saw blades 13, 15. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-blade saw for simultaneously cutting a plurality of narrow boards from a wide wood to be cut, by pressing the wood to be cut in the vicinity of the cutting position of the saw blade. The present invention relates to a material pressing device for stabilizing the cut wood so that it does not jump up.

[0002]

2. Description of the Related Art A multi-blade saw is for cutting a plurality of narrow boards simultaneously from a wide piece of wood to be cut, and its basic structure is to arrange a plurality of saw blades coaxially. While the wood to be cut is transferred in the length direction, the rotating saw blades cut at the same time, so that a plurality of narrow boards corresponding to the arrangement intervals of the saw blades can be obtained.

In some cases, it is necessary to change the width of the narrow plate to be cut. To meet this demand, a multi-blade saw machine has been proposed in which the arrangement intervals of a plurality of saw blades can be changed.

6 to 12 show the structure of the above-mentioned conventional multi-blade saw.

As shown in FIGS. 6 and 7, in the multi-blade saw, the conveying path 1 for horizontally supporting the wood A to be cut and feeding it in the lengthwise direction has a lower feed roller 2 and an upper feed roller arranged above it. Laura 3
The first half part 1a consisting of and the second half part 1b using the endless track 4
The saw blade devices 5 and 5 are symmetrically arranged at positions on both sides of the upper transport surface of the endless track 4 in the latter half portion 1b.

In the latter half portion 1b, as shown in FIG. 8, the upper traveling portion of the endless track 4 rotated by a motor is guided by horizontal rails 6 and 6, and the cut wood A placed on the upper traveling portion is cut.
Is supported horizontally and is transported along its length.

Since the saw blade devices 5 and 5 on both sides have the same structure, only one structure will be described and the other parts will be denoted by the same reference numerals and will not be described.

As shown in FIGS. 9 to 11, this saw blade device can be individually moved along a rail 8 in a direction orthogonal to the transfer direction of the wood A to be cut on a base 7 that can be moved up and down. The first movable table 9 and the second movable table 10 and the fixed bearing 11 placed on the outer end side, and the cylindrical shaft rotatably supported by the first movable table 9 so as to integrally move in the axial direction. The first saw blade 13 is fixed to the tip of the main shaft 12, and the main shaft 14 is rotatably supported by the second movable table 10 so as to integrally move in the axial direction.
And a second saw blade 15 is fixed to the tip of the main shaft 14.

The main shaft 14 and the cylinder shaft 12 are coupled to each other in the rotational direction to rotate integrally, and are free to move in the axial direction, and the rear end of the main shaft 14 is supported by a fixed bearing 11 at a fixed position on a drive shaft. 16 and the coupling 17 so as to rotate integrally and are coupled so as to be movable in the axial direction. By driving the drive shaft 16 with a motor (not shown) installed on the base 7, the main shaft 14 and The cylindrical shaft 12 and the saw blades 13 and 15 fixed to the cylindrical shaft 12 are simultaneously rotated.

As shown in FIG. 9, a position adjusting mechanism 18 for moving the first movable table 9 and a position adjusting mechanism 19 for moving the second movable table are provided on the base table 7. The position adjusting mechanisms 18 and 19 have the same structure, and a screw shaft 21 driven by a servomotor 20 fixed on the base 7 is screwed to a nut member 22 fixed to the movable bases 9 and 10. The movable bases 9 and 10 can be individually moved by rotating the screw shaft 21.

The saw blade devices 5 and 5 are symmetrical to each other on both sides of the transport path 1 so that the first and second saw blades 13 and 15 are located on the endless track 4 of the transport path 1. The saw blades 13 and 15 are arranged in a circular shape to cut the wood A to be cut on the conveying path at the same time.
The facing interval of 3 and 15 is the cutting interval of the narrow plate.

In such a multi-blade saw, when the cutting wood A is cut by the rotating saw blades 13 and 15, the cutting wood A is lifted by the rotating saw blades 13 and 15 and cut. It may cause the wood A to ramp up or vibrate,
As a result, a saw mark is generated on the cut surface to reduce the cut surface. Therefore, the cutting portion of the wood A to be cut by the saw blades 13 and 15 is pressed from above by the pressure plate 23, and the wood A to be cut is violent or vibrates. To prevent disconnection in a stable state.

Conventionally, as the pressure plate 23, one rectangular wooden board has been used.

FIG. 11 and FIG. 12 show a supporting structure of the above-mentioned conventional pressing plate 23, in which a support frame 24 is arranged at a rear upper position of the conveying path 1 so as to be parallel to the conveying path 1, and along a guide 25. The saw blade 1
3 and 15 are attached to face each other in the front and back, springs 27 are urged downwardly to the elevating plates 26, and support rails 28 are fixed to the lower ends of both elevating plates 26 in an opposed manner.
Both support rails 28 horizontally support both sides of the pressure plate 23. It should be noted that pressing rollers 29 and 30 are arranged at positions before and after sandwiching the saw blades 13 and 15.

The pressure plate 23 presses the portion of the wood A to be cut, which is transported on the conveying path 1, to be cut by the saw blades 13 and 15 from above, so that the wood A to be cut is violent and vibrates during cutting. In order to prevent the cut portion of the wood A to be cut by the saw blades 13 and 15, the pressing plate 23 is provided with the saw blades 13 and 15.
The saw blades 13 and 15 are arranged at the position of the cutting portion, and cut the wood to be cut with the pressing plate 23 cut.

In the multi-blade saw machine, the saw blades 13 and 15 are provided.
First, as shown in FIG. 12, with the saw blades 13 and 15 in the lowered position, the base table 7 is raised to lower the lower edges of the saw blades 13 and 15 more than the pressure plate 23. Then, the saw blades 13 and 15 are moved in the axial direction by the operation of the position adjusting mechanisms 18 and 19, and when the interval between the saw blades 13 and 15 is set, the base table 7 is lowered and the saw blades 13 are moved. ,
The pressure plate 23 is cut by the rotation of 15 so as to stand by at the lowered position.

[0017]

As described above, in the conventional multi-blade saw, in order to change the interval between the saw blades 13 and 15, the saw blades 13 and 15 are lifted and the saw blade 13 is moved. , 15 must be moved in the axial direction, the saw blades 13 and 15 must be lowered, and the pressure plates must be cut by the saw blades 13 and 15. Therefore, changing the interval between the saw blades 13 and 15 requires time and labor. There is a problem that it takes.

Further, since the pressing plate 23 is cut by the saw blades 13 and 15 each time the interval between the saw blades 13 and 15 is changed, the pressing plate 23 is cut every time the type of the interval change width changes, as shown in FIG. Since the indentation a is generated, and therefore the pressure plate 23 is changed in the interval of several kinds of widths, a large number of the incision a is generated in the pressure plate 23, and it becomes useless, so that the pressure plate 23 should be replaced with a new one. There is a problem that the cycle becomes frequent and waste of money and resources occurs.

Therefore, an object of the present invention is to change the interval between the saw blades easily and efficiently, to enable repeated use of the pressure plate, to eliminate the need for replacement, and to save waste of resources and resources. An object is to provide a material pressing device for a blade saw machine.

[0020]

In order to solve the above problems, the present invention presses a moving member to be cut by a pressure plate, and rotates a portion of the member to be cut pressed by the pressure plate. In a multi-blade saw that cuts with multiple saw blades at the same time, the position of each saw blade can be adjusted independently by moving the saw blade in the axial direction. Each pressurizing plate can be moved up and down, and the pressurizing plate can be moved integrally with the corresponding saw blade.

Here, the plurality of saw blades are individual movable bases arranged on the base base so as to move in a direction orthogonal to the transfer direction of the members to be cut, and are rotatable and integral with the corresponding movable bases. Each movable table can be individually moved by the connection with the position adjusting mechanism, and each pressure plate is attached to the movable table of the corresponding saw blade so as to move integrally through the attaching means. It is possible to adopt a structure in which a slit through which the lower portion of the saw blade corresponding to each pressure plate penetrates is provided.

As described above, the respective saw blades and the pressure plates corresponding to them are moved integrally by the operation of the position adjusting mechanism, and the intervals between the saw blades can be adjusted without raising and lowering the saw blades. There is no need to cut the pressure plate with a saw blade.

Both ends of each pressure plate are supported by support rails so as to be able to move up and down and the saw blade can move in the axial direction. In the support rails, there is a pushing down means for pushing down the pressure plates to the lowered position. The structure is provided.

The pushing-down means is formed by using a stretchable hose. During the cutting process with a saw blade, pressurized air is supplied to the inside of the hose and the hose is expanded in the support rail so that the pressing plate is opened. When the wood to be cut is pressed and the interval between the saw blades is adjusted, pressurized air is released to release the expansion of the hose, thereby enabling the pressure plate to move along the support rail.

As another example of the pushing-down means, pressurized air is constantly supplied to the inside of the elastic hose so that the hose is always expanded in the support rail and is supported in that state. It is possible to move the pressure plate along the rail, and when the wood to be cut passes under the pressure plate, the wood to be cut is pushed by pushing up the pressure plate and passing through. Good. Further, as another example of the pushing-down means, a spring may be provided on the support rail for constantly pushing down the pressure plate to a lower position while allowing the pressure plate to move upward, or a structure in which an air cylinder is mounted may be adopted. .

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the illustrated examples shown in FIGS. In the structure of the multi-blade saw, the same parts as those in FIGS. 6 to 12 described in the section of the prior art are denoted by the same reference numerals and will not be described.

As shown in the figure, the multi-blade saw according to the present invention sandwiches a rear half portion 1b using an endless track 4 of a conveying path 1 for horizontally supporting and cutting the wood to be cut and sandwiching the both sides thereof. The saw blade devices 5 and 5 are symmetrically arranged at the positions.

The saw blade devices 5 and 5 have a first movable table 9 and a second movable table 10 on a base table 7 which can be moved up and down.
The fixed bearings 11 are placed side by side on the outer end side, and the first movable table 9 is placed.
The main shaft 14, which rotatably supports the cylinder shaft 12 so as to integrally move in the axial direction and is rotatably supported so as to integrally move in the axial direction by the second movable table 10, penetrates through the cylinder shaft 12 and 14 and the cylinder shaft 12 are connected to each other by a key and a key groove in the rotation direction and rotate integrally, and the movement in the axial direction is free, and the first saw blade 13 and the tip of the main shaft 14 are attached to the tip of the cylinder shaft 12. The second saw blades 15 are fixed to the respective.

The rear end of the main shaft 14 rotates integrally with a drive shaft 16 supported in a fixed position by a fixed bearing 11 and a key groove through a coupling 17 and is free to move in the axial direction. By driving the drive shaft 16 with a motor (not shown) installed on the base table 7 in such a manner, the main shaft 14 and the cylindrical shaft 12 rotate integrally, and the first and second saw blades 1
3 and 15 are designed to rotate at the same time.

A position adjusting mechanism 18 for moving the first movable table 9 and a position adjusting mechanism 19 for moving the second movable table 10 are provided on the base table 7.

The saw blade devices 5 and 5 are symmetrical with respect to the first and second saw blades 13 and 15 so that the first and second saw blades 13 and 15 are located above the conveying path 1 with the rear half 1b of the conveying path 1 interposed therebetween. The saw blades 13 and 15 in total make it possible to convey the conveying path 1.
Since the upper wood to be cut A is cut at the same time, the facing interval between the saw blades 13 and 15 becomes the cutting interval of the narrow plate, and the position adjusting mechanisms 18 and 19 allow the first movable table 9 and the second movable table 9 to move. By moving the movable table 10 individually, the arrangement interval of the four saw blades 13 and 15 can be changed.

The pressing plate 31, which presses the cut portion of the wood A to be cut by the saw blades 13 and 15 from above, includes the saw blades 13 and 15.
Each of the saw blades 13 is separated and independent, and when the arrangement interval of the saw blades 13 and 15 is changed, the saw blades 13 and 15 move integrally with the corresponding saw blades 13 and 15.

The first pressure plate 31 for the first saw blade 13
Is fixed to the first movable table 9 via mounting means 32, and the second pressure plate 31 for the second saw blade 15 is attached.
Is fixed to the second movable table 10 via mounting means 33, and the first movable table 9, the first saw blade 13 and the first pressure plate 31 are arranged in the axial direction of the first saw blade 13. The second movable table 10, the second saw blade 15, and the second pressure plate 31 move integrally.
Will move integrally in the axial direction of the second saw blade 15.

Each of the pressure plates 31 is formed by using a square member made of metal, wood, or synthetic resin that is long along the transfer direction of the member A to be cut, and the lower surfaces of both ends thereof are inclined surfaces as shown in FIG. In addition, the slit 34 through which the lower part of the saw blade 13 or 15 penetrates is provided along the length direction.

FIG. 5 shows the structure of the mounting means 33 for fixing the second pressure plate 31 to the second movable table 10, and the horizontal plate 35 having the rear end fixed to the upper surface of the tip of the second movable table 10. A horizontal plate 36 fixed to the tip of the horizontal plate 35, downward guide shafts 37 fixed to both ends of the horizontal plate 36, a slide member 38 attached to the guide shaft 37 so as to be vertically movable, and a slide member 38. A horizontal long arm 39 having a rear end fixed to the long arm 39
And a downward mounting plate 40 fixed to the front end of the second pressing plate 31. The second pressing plate 31 is horizontally fixed to the lower ends of the mounting plates 40 on both sides.

Therefore, the second pressure plate 31 can be moved integrally with the second movable table 10 and the second saw blade 15 in the axial direction of the second saw blade 15, and the second saw blade 15 can be moved. It is possible to move up and down.

Further, the first pressure plate 31 is attached to the first movable table 9
The attachment means 32 fixed to the
The first pressurizing plate 31 can move integrally with the first movable table 9 and the first saw blade 13 in the axial direction of the first saw blade 13, The saw blade 13 can move up and down.

FIG. 4 shows the support structure of the pressure plate 31, which is opposed to the upper and lower positions of the endless track 4 before and after sandwiching the group of saw blades 13 and 15 in a state orthogonal to the transfer direction of the wood A to be cut. A pair of support rails 41 are arranged by being attached to the support frame 24, and both support rails 41 allow both side portions of each pressure plate 31 to move up and down with the range of up and down movement limited, and at the same time, the saw blade. It is supported so that 13 and 15 can be moved in the interval adjusting direction.

The support rails 41 supporting both ends of each pressure plate 31 are applied to the support rails 41 as a reaction force.
A pressing means 42 for pressing the wood A to be cut by 1 is provided.

In the illustrated case, the pushing-down means 42 incorporates a stretchable air hose 43 between the upper and lower opposing surfaces of the support rail 41 and the pressure plate 31, and when cutting the wood A to be cut by the saw blades 13 and 15, the air hose is used. By supplying pressurized air to 43 and inflating the air hose 43, the pressure plate 31 is pushed down to the support rail 41, and the pressure plate 31 moves against the wood A to be cut that has entered as shown in FIG. As shown, the air hose 43 is compressed and pushed up by the height t, and the moving wood A to be cut is pressed from above.

When adjusting the interval between the saw blades 13 and 15, the pressure plate 3 is removed by removing the pressure air from the air hose 43.
The pressure 1 is released, and the pressure plate 31 can be moved in the direction of adjusting the distance between the saw blades 13 and 15.

As another control method of the pushing-down means 42, a stretchable air hose 43 is installed between the upper and lower opposing surfaces of the support rail 41 and the pressure plate 31, and pressurized air is constantly supplied to the air hose 43. The air hose 43 is constantly inflated, and in this state, the pressure plate 31 moves the saw blade 13,
When the wood A to be cut passes through the pressure plate 31, the pressure plate 3 is pressed by a pressing margin t.
Air hose 4 which is expanding by pushing 1 up
3 will be compressed and the moving wood to be cut A will be pressed from above. Furthermore, the pushing-down means 4 described above
As another example of No. 2, it is possible to employ a structure in which a spring is provided on the support rail that constantly pushes down the pressure plate to a lower position while allowing the pressure plate to move upward, or a structure in which an air cylinder is mounted.

The material pressing device in the multi-blade saw according to the present invention has the above-mentioned structure, and the saw blades 13 and 15 of the saw blade devices 5 and 5 arranged on both sides are set at a predetermined cutting interval. Then, the saw blades 13 and 15 are lowered by lowering the base table 7.
Are arranged so that the lower edge of the cutting edge approaches the endless track 4. In addition, as shown in FIG. 4, the portion of the endless track 4 that supports and transports the wood A to be cut and passes directly below the saw blade is guided so that it travels slightly downward as shown in FIG. By being accommodated in this curved portion, it is positioned below the lower surface of the cut wood A supported by the endless track 4. In addition, the support structure of the pressure plates 31 is such that pressurized air is supplied to the air hoses 43 and the respective pressure plates 31 are pushed down.

In this state, rotate the saw blades 13 and 15,
A saw blade 1 for rotating the wood A to be cut supplied on the conveying path 1.
When fed toward Nos. 3 and 15, the wood A to be cut, which is supported and transferred by the endless track 4, is pushed into the pressing roller 29 on the entrance side.
After passing through, each pressure plate 31 enters below, each pressure plate 31 pushes down the wood A to be cut, and each saw blade 13 and 15 cuts the portion of the wood A to be cut pressed by the pressure plate 31. The wood A to be cut that has passed through the saw blades 13 and 15 is cut into a plurality of narrow boards, and then passes through the pressing roller 30 on the delivery side and is taken out.

Wood A to be cut by the above saw blades 13 and 15
At the time of cutting, the pressing plate 31 presses the upper surface of the portion to be cut by the saw blades 13 and 15 of the wood A to be cut, so that the wood A to be cut is prevented from being violent or vibrated, and the accuracy of the cut portion is improved. Can be improved.

Next, in order to change the cutting intervals of the saw blades 13 and 15, the pressing down of the pressure plate 31 by the pressing down means 42 in the support structure of the pressure plate 31 is released. In the case of the pushing-down means 42 of the illustrated example, the first movable table 9 and the second movable table 10 are moved by the position adjusting mechanisms 18 and 19 in a state where the pressurized air of the air hose 43 is released and the pressure plate 31 is movable. Are individually moved to adjust the arrangement interval of the four saw blades 13 and 15 to be a required interval.

At this time, since the first and second pressure plates 31 are attached to the first movable base 9 and the second movable base 10, respectively, the first movable base 9 and the second movable base 10 are attached. When 10 is moved individually, the first saw blade 13 and the first pressure plate 31 and the second saw blade 15 and the second pressure plate 31 move together, and therefore the first saw blade 13 The positions of the first and second pressure plates 31 are changed only by moving the second saw blade 15 and the second saw blade 15, and the cutting intervals of the saw blades 13 and 15 can be changed easily in a short time. You can do it well.

Further, the saw blades 13 or 15 penetrate the slits 34 of the first and second pressure plates 31, and the first and second pressure plates 31 move integrally with the saw blades 13 and 15. Therefore, even if the cutting interval between the saw blades 13 and 15 is changed, it is not necessary to cut the first and second pressure plates 31 with the saw blades 13 and 15, and the first and second pressure plates 31 are not damaged. No occurrence,
It can be used many times repeatedly.

[0049]

As described above, according to the present invention, since the construction is as described above, when the cutting interval of each saw blade is changed, the corresponding pressure plate moves integrally with the saw blade. The cutting interval can be changed only by moving each saw blade horizontally, and the cutting interval can be changed easily and quickly in a short time.

Further, by moving the pressure plate integrally with the saw blade, it is not necessary to cut the pressure plate each time the cutting interval is changed, and the pressure plate can be repeatedly used many times. It is possible to reduce the cost required for replacement and waste resources.

[Brief description of drawings]

FIG. 1 is a plan view of a multi-blade saw equipped with a material pressing device according to the present invention.

FIG. 2 is a front view showing the saw blade device of the above.

FIG. 3 is a plan view showing the saw blade device in the above.

FIG. 4 is an enlarged front view of the material pressing device of the above.

FIG. 5 is an exploded perspective view schematically showing the structure of the material pressing device in the above.

FIG. 6 is a front view showing a conventional multi-blade saw.

FIG. 7 is a plan view of the above.

FIG. 8 is a front view showing a conventional saw blade device.

FIG. 9 is a plan view showing a conventional saw blade device.

FIG. 10 is a partially cutaway front view showing an enlarged conventional saw blade device.

FIG. 11 is an enlarged plan view of a conventional material pressing device.

FIG. 12 is an enlarged front view of a conventional material pressing device.

[Explanation of symbols]

1 transport path 2 Lower feed roller 3 Upper feed roller 4 endless orbit 5 saw blade device 6 rails 7 base stand 8 rails 9 First movable platform 10 Second movable platform 11 Fixed bearing 12 cylinder axis 13 First saw blade 14 spindle 15 Second saw blade 16 drive shaft 17 Coupling 18 Position adjustment mechanism 19 Position adjustment mechanism 20 Servo motor 21 screw shaft 22 Nut member 23 Pressure plate 24 Support frame 25 guides 26 Lifting plate 27 springs 28 Support rail 29 Pressing roller 30 pressure roller 31 Pressure plate 32 mounting means 33 mounting means 34 slits 35 Horizontal plate 36 Horizontal plate 37 Guide shaft 38 Slide member 39 Long arm 40 mounting plate 41 Support rail 42 Depressing means 43 Air hose

Claims (3)

[Claims] 1. A pressing member presses a moving member to be cut,
In a multi-blade saw that simultaneously cuts the portion pressed by the pressure plate of the member to be cut with a plurality of rotating saw blades,
The position of each saw blade can be adjusted independently by moving it in the axial direction, and the pressure plate that presses the member to be cut is separated for each saw blade, and this pressure plate can move up and down. A material pressing device for a multi-blade saw, characterized in that it can be moved integrally with a saw blade. 2. The plurality of saw blades are individual movable bases arranged on the base base so as to move in a direction orthogonal to the transfer direction of the member to be cut, and the plurality of saw blades are rotatable with respect to the corresponding movable bases and integrally formed. Supported to move, each movable table can be individually moved by the connection with the position adjusting mechanism, and each pressure plate is attached to the movable table of the corresponding saw blade so as to move integrally through the attaching means. The material pressing device for a multi-blade saw machine according to claim 1, wherein a slit through which a lower part of the saw blade corresponding to each pressing plate penetrates is provided. 3. Both ends of each pressure plate are supported by support rails so as to be able to move up and down and the saw blade to move in the axial direction, and the pushing down means for pushing down the pressure plates to the lowered position in the support rails. 3. The method according to claim 1, wherein
Or the material pressing device in the multi-blade saw machine according to 2.