JPH08281602A - Wood cutting device - Google Patents

Abstract

PURPOSE: To cut into the given length efficiently and safely a material wood to be formed into splittable chopsticks. CONSTITUTION: When a material wood 10 to be cut is placed on a table 11, a wood press cylinder 14 is driven, and the surface of the material wood 40 positioned between respective slits 11a of the table 11 is pressed. In the above- said state, respective rotary saw blades 21 provided below the table 11 are rotated respectively by a motor 28, and all the rotary saw blades 21 in the rotating state are lifted up by a saw blade lifting and lowering cylinder 25. The upper sections of respective rotary saw blades 21 are pressed through respective slits 11 a formed on the table 11 and protruded up on the table 11. The material wood 40 placed on the table 11 and pressed by the wood press cylinder 14 is cut by respective rotary saw blades 21, and the material wood 40 on the table is cut into a plurality of wood pieces of given length by the above arrangement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood cutting apparatus capable of cutting a long piece of wood into pieces having a predetermined length at a time.

[0002]

2. Description of the Related Art Split chopsticks, which are wood products, are usually manufactured by using flat plate materials such as wood grain and grain wood cut to the dimensions of the chopsticks to be manufactured. In order to cut a flat plate material that extends in a predetermined direction, a cutting device that normally has a table on which the flat plate material is placed and slides, and a rotary saw blade that is rotatably arranged vertically on a side of the table is provided. used. The upper end of the rotary saw blade projects upward from the table on which the flat plate material is placed, and the flat plate material is manually placed on the table so that the predetermined cutting position of the flat plate material is aligned with the rotating rotary saw blade. Slide.

[0003]

In such a cutting device, it is necessary to manually slide the flat plate material with respect to the rotating saw blade so that the cutting position of the flat plate material is along the rotating rotary saw blade. There is. Moreover, the flat plate material must be pressed with great care by hand so that a predetermined cutting position is cut by the rotary saw blade.
Very dangerous. Further, by sliding one flat plate material with respect to the rotary saw blade, normally, only one cut piece cut into a predetermined length can be obtained, and there is a problem that work efficiency is poor.

The present invention solves such a problem, and an object of the present invention is to provide a very safe wood cutting device capable of efficiently cutting wood such as flat plate material into a predetermined length. To provide.

[0005]

In the wood cutting device of the present invention, the wood to be cut is placed, and a plurality of pieces are placed at intervals corresponding to the cutting length of the placed wood. Tables having slits provided in parallel with each other, a plurality of rotary saw blades rotatably arranged below each slit so that the slits can pass through the respective slits, and each rotary saw blade is rotated. A rotation blade and a saw blade elevating means that integrally raises each rotary saw blade to project the upper portion of each rotary saw blade onto a table through a slit,
A wood pressing means which is arranged above the table so as to correspond between the slits provided on the table and which is driven to press the surface of the wood placed on the table. The above-mentioned object is achieved thereby.

[0006]

In the wood cutting device of the present invention, when the wood to be cut is placed on the table, the wood pressing means is driven so that the surface of the wood located between the slits of the table becomes
It is pressed by the wood pressing means. In this state,
Each rotary saw blade provided below the table is rotated by the rotation driving means, and all the rotary saw blades in the rotating state are integrally lifted by the saw blade lifting means.
Each of the rotary saw blades lifted by the saw blade lifting means is rotated by the rotation driving means, and an upper portion thereof projects through the slits provided on the table and projects onto the table. As a result, the wood placed on the table and pressed by the wood pressing means is cut into a predetermined length by each rotary saw blade. After that, each rotating saw blade in the rotating state
The saw blade ascending / descending means lowers the table, and the pressing of the wood by the wood pressing means is released.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an example of a wood cutting device according to the present invention. This wood cutting device corresponds to the length of the disposable chopsticks, for example, when manufacturing disposable chopsticks, the raw material such as the back plate with a crescent-shaped cross section, which is the remaining material after cutting the pillars and plates from the raw wood It is used for cutting into the above length and is entirely covered with the casing 10.
The casing 10 is provided with a table 11 in a horizontal state on which the raw material 40 is placed, and above the table 11, a support base portion supported by side columns 12 is provided. 13 are provided.

The table 11 has an elongated rectangular shape and has eight slits 1 extending linearly in the width direction.
1a are provided at equal intervals in the longitudinal direction. The interval between the slits 11a corresponds to the length of the cut piece obtained by cutting the raw material 40, that is, the length of the disposable chopsticks to be manufactured.

The front surface 13a of the support base 13 is the table 1
It is positioned vertically above the widthwise center of 1,
Seven pressing cylinders 14, which are wood pressing means, are vertically attached to the front surface 13a at equal intervals in the longitudinal direction. Each pressing cylinder 14 has a piston rod 14a that extends downwards,
A pressing tool 14b for pressing the upper surface of the raw material placed on the table 11 is attached to the lower end thereof. The pressing cylinders 14 are attached to the front surface 13a of the support base 13 at equal intervals so that the pressing tools 14b provided at the lower end face each slit 11a provided on the table 11. There is.

Below the table 11, eight rotary saw blades 21 in a vertical state are provided so as to pass through the slits 11a provided in the table 11, respectively.
Are arranged facing each other.

FIG. 2 is a cross-sectional view of the main part of the casing 10. Below the table 11 provided in the casing 10, a gantry frame 22 in the shape of a rectangular frame is provided, and on this gantry frame 22, a rocking in the shape of a rectangular frame similar to the gantry frame 22 is provided. The moving frame 23 is supported in a mounted state. The rear frame member 23a of the swing frame 23 is the rear frame member 22a of the gantry frame 22.
The front frame member 23b of the swing frame 23 is supported above by a hinge 24 so that it can swing vertically with respect to the front frame 22b of the gantry frame 22.

A plurality of pairs of support frame members 23c are provided between the rear frame member 23a and the front frame member 23b of the swing frame 23. The support frame member 23c forming a pair is the table 11
It is located on each side just below each slit 11a provided in the. A support 23d is provided on each support frame member 22c, and a bearing 26 is supported on the center of each support 23d. A single rotating shaft 27 is rotatably installed in a horizontal state between the two adjacent bearings 26.

Rotating saw blades 21 that rotate integrally with the rotary shaft 27 are attached below the slits 11a in the respective portions between the pair of bearings 26 of the single rotary shaft 27. ing.

The rotation of a motor 28, which is a rotation driving means provided on the rear frame member 23a of the swing frame 23, is transmitted to each rotation shaft 27 by a belt transmission mechanism 29. There is. Belt transmission mechanism 29
Is a drive pulley 29a attached to the output shaft 28a of the motor 28, a driven pulley 29b attached to the rotating shaft 27, a drive pulley 29a and a driven pulley 29b.
And a belt 29c wound between the two.

The front frame member 22b of the gantry frame 22
An elevating cylinder 25 as a saw blade elevating means for elevating the rotary saw blade 21 is attached to the central part of the. The elevating cylinder 25 is a front frame member 22 of the gantry frame 22.
b so that the piston rod 25a moves upward,
It is supported rotatably in the front-rear direction in a substantially vertical state. The upper end of the piston rod 25a of the elevating cylinder 25 is rotatably attached to a connecting shaft 26 provided between a pair of support frame members 23c at the center of the swing frame 23. Therefore, when the piston rod 25a of the elevating cylinder 25 moves upward, the front frame member 23b of the swing frame 23 is raised around the rear frame member 23a. As a result, the rotary saw blades 21 supported by the swing frame 23 are integrally lifted, and the upper ends of the rotary saw blades 21 are projected onto the table 11 through the slits 11a of the table 11. It becomes a state.

A roller conveyor 30 (see FIG. 1) is provided on one side of the table 11 in the longitudinal direction. A raw material 40 such as a back plate for manufacturing disposable chopsticks is placed on the roller conveyor 30 and is conveyed onto the table 11 manually or electrically.

The operation of the wood cutting device having such a configuration is as follows. When the raw material 40 placed on the roller conveyor 30 is conveyed onto the table 11, each motor 28 below the table 11 is rotationally driven to rotate all the rotary saw blades 21. In such a state, all the pressing cylinders 14 are simultaneously driven, and the piston rods 14a of the pressing cylinders 14 advance downward. Then, on the surface of the raw material 40 placed on the table 11,
The pressing tool 14b attached to the lower end of each piston rod 14a is pressed. As a result, the raw material 40 on the table 11 is fixed by the pressing tools 14b.

In this state, the lifting cylinder 25 is driven and the piston rod 25a advances upward. Thereby, as shown in FIG. 3, the front frame member 23b of the swing frame 23 supported on the gantry frame 22 is provided.
However, the upper ends of the rotary saw blades 21 which have been rotated upward by rotating around the rear frame member 23a as a center, integrally project through the slit 11a and above the table 11. . As a result, the raw material 40 placed on the table 11 is cut by each rotating saw blade 21 in the rotating state. When the raw material 40 is placed over substantially the entire area of the table 11 in the longitudinal direction, seven cut pieces having a predetermined length corresponding to the intervals between the slits 11a (the intervals between the rotary saw blades 21) are provided. Will be obtained. Since the raw material 40 is pressed and fixed by the pressing tool 14b of the pressing cylinder 14, it is smoothly cut by each rotary saw blade 21. Each cut piece is also fixed on the table 11 by being pressed by the pressing tool 14b of the pressing cylinder 14.

When the raw material 40 is cut in this way,
The piston rod 25a of the lifting cylinder 25 is lowered, and the front frame member 23b of the swing frame 23 is lowered.
As a result, all the rotary saw blades 21 are positioned below the table 11. After that, the piston rods 14a of the pressing cylinders 14 are moved upward, so that the pressing tools 14
The pressing of the cut piece by b is released. Then, when each cut piece is removed from the table 11, a new raw material 40 is obtained.
Are transported onto the table 11 and the same operation is repeated.

In each of the obtained cut pieces, the arcuate surface side portion is cut by a cut surface inclined with respect to the opposite flat surface, and cut at a constant interval in the direction orthogonal to the inclined direction. To be done. As a result, a large number of semi-finished disposable chopsticks whose widthwise dimension gradually decreases from one short portion to the other end portion can be obtained. Then, the disposable chopsticks are manufactured by forming an interrupt line at an end portion of each half-finished disposable chopstick product having a reduced width dimension.

In the above embodiment, the wood cutting device of the present invention cuts raw materials such as a back plate used for manufacturing semi-finished disposable chopsticks. However, the wood cutting device of the present invention Not only the raw material such as the back plate, but also the flat material can be used for cutting into a predetermined length.

[0023]

As described above, the wood cutting device of the present invention is
Since the wood placed on the table is cut into a predetermined length at a time by the rotary saw blade protruding from each slit of the table, the working efficiency is remarkably improved. Further, the rotary saw blade is in a state of protruding from the table only when cutting the wood on the table, and is normally located below the table, which is safe. Further, since it is not necessary to press the wood by hand when cutting the wood with the rotary saw blade, the safety is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a wood cutting device of the present invention.

FIG. 2 is a cross-sectional view showing the inside of the wood cutting device.

FIG. 3 is a cross-sectional view for explaining the operation of the wood cutting device.

[Explanation of symbols]

 10 Casing 11 Table 11a Slit 14 Pressing Cylinder 14b Pressing Tool 21 Rotating Saw Blade 22 Frame Frame 23 Swinging Frame 24 Hinge 25 Lifting Cylinder 27 Rotating Shaft 28 Motor 29 Transmission Mechanism 40 Raw Material

Claims (1)

[Claims] 1. A table on which wood to be cut is placed, and a plurality of slits provided in parallel with each other at intervals corresponding to the cutting length of the placed wood, A plurality of rotary saw blades rotatably arranged below each slit so that they can pass through each slit of this table, a rotary drive means for rotating each rotary saw blade, and each rotary saw blade as one unit. It is arranged above the table so as to correspond between the slits provided on the table and the saw blade ascending / descending means that raises the upper part of each rotary saw blade through the slits to project onto the table. A wood cutting device comprising: a wood pressing unit that is driven so as to press the surface of the wood placed on the table.