JPS63290702A - Wood cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (a) Field of the Invention The present invention is for cutting wood such as a regular length lumber or a lumber product having irregular lengths into predetermined dimensions. Regarding wood cutting equipment.

(b) Background of the Invention Conventionally, when cutting a plurality of pieces of wood at the same time as described above, for example, the plurality of pieces of wood to be cut are placed on a tool rest, and the ends of each piece of wood are aligned on the tool rest. It is then fed to a rotary blade and cut into a predetermined size.

However, even if the above-mentioned pieces of wood with irregular lengths are held down by hand and fed to the rotary blade, the vibrations during cutting gradually cause adjacent pieces of wood to shift from each other, resulting in the cutting positions of each piece of wood being staggered. The position must be corrected each time the wood is cut, which causes problems such as slow wood supply speed and poor work efficiency.Also, since the worker must visually measure the wood to align the wood, Another problem is that errors tend to occur in the dimensions of the wood to be cut, and it is difficult to cut the wood into predetermined dimensions.

Furthermore, as another means of supplying wood, there is a device that uses a mechanically moved pusher to feed the wood to the rotary blade, but this device feeds the wood by pushing the rear end of the wood with a pusher, so it is difficult to cut the wood. When the feed speed of the bushings is increased in order to speed up the cutting process, the recoil of the movement of the bushings causes the wood to move from the predetermined cutting position to the tU end on the conveying side, resulting in uneven cutting positions of the pieces of wood. Because of the misalignment, highly accurate cutting cannot be performed.Therefore, there is a limit to the speed at which the bushings are fed, making it impossible to improve work efficiency.

(C) Purpose of the Invention This invention has a unique structure in which the rear ends of the wood are fed to the cutting device with their rear ends aligned, so that the wood can be cut at a predetermined cutting position that makes the most of the entire length of the wood, and set. The purpose of the present invention is to provide a wood cutting device that can obtain wood with predetermined dimensions, perform cutting work with high dimensional accuracy, improve the efficiency of cutting work, and improve the cutting function of the device. shall be.

(D) Structure of the Invention This invention provides a wood cutting device that cuts the wood into predetermined dimensions by feeding the wood supplied onto a conveyance surface to a cutting device disposed at the rear end of the conveyance side of the conveyance surface. A wood clamping means is provided at the front end of the transport side of the transport surface to clamp the rear end of the wood and supply it to the cutting device, and on the transport surface, the rear end of the wood is held by the wood clamping means. The wood cutting device is characterized in that it is provided with a means for aligning the wood so that it can be held in an aligned state.

(E) Effect of the Invention This invention provides a state in which the rear ends of the timbers supplied on the conveying surface are aligned so that they can be clamped by the timber clamping means, and then the rear ends of the timbers are clamped by the timber clamping means. By supplying the wood to the cutting device, the cutting device can cut the wood at a predetermined cutting position, and furthermore, the wood clamping means that clamps the wood is intermittently cut in accordance with the predetermined cutting dimensions of the wood. Move and cut sequentially.

(f) Effects of the Invention According to this invention, since the rear ends of the timbers aligned by the timber alignment means are held by the timber clamping means, it is possible to cut, for example, a plurality of timbers of uneven length or warped. In such cases, it is possible to cut at a predetermined cutting position that makes full use of the entire length of the lumber to obtain lumber of the predetermined dimensions without causing the cutting positions of the lumber to shift due to vibration during cutting. can.

Moreover, since the above-mentioned wood is fed to the cutting device in a sandwiched state, it is possible to prevent the pieces of wood from being arranged unevenly due to the reaction when the wood holding means moves, and to place the wood at a predetermined cutting position. It can move quickly and accurately to cut wood with high dimensional viscosity, and it also increases the wood feeding speed of the wood clamping means to improve the efficiency of cutting work and improve the cutting performance of the device. can be done.

(g) Examples of the invention An embodiment of the present invention will be described in detail below based on the drawings.

The drawings show a wood cutting device that cuts wood into predetermined dimensions. In FIGS. After aligning the rear ends of the wood W so that they can be pinched by moving back and forth of the alignment device 3 disposed on the side or reversing the conveyance device 2, the rear ends of the wood W are aligned with the clamping device 4 disposed on the conveyance starting end side. The wood W is cut into a predetermined cutting size by a cutting device 5 at the end of the conveyance while holding the wood W in a predetermined size.

As shown in FIG. 1, the above-mentioned conveying device 2 has a plurality of rollers 7 and 7 mounted between the frames 6a and 6a for mounting the left and right sides of the upper part of the machine stand 6.
... are arranged at equal intervals in the conveying direction and pivoted in parallel, and the pivoting position on one side of each roller 7... is shifted, and one is fixed to the frame 6a by regulating plates 8. It is pivoted diagonally to align the wood W to the side.

Each roller 7... has a drive belt attached to each pulley 9... which is pivotally connected to the lower part of the transport surface on the transport end side and the transport start end side, and a pulley 11 of a drive motor 10 fixed to the lower part of the transport start end side. 12 is stretched in a state where it is pressed against the lower peripheral surface of each roller 7..., and the drive force of the drive motor 1o causes each roller 7... Rotate forward and reverse in the same period.

The above-mentioned alignment device 3, as shown in FIGS. 3 and 4,
Two guide shafts 13.13 are installed parallel to the transport direction on the side of the machine 6 at the end of transport, and the slider 14 is slidably mounted on the guide shafts 13.13 and fixed to the side of the device. An air cylinder 15 is connected to the slider 14 so as to be movable back and forth.

Furthermore, the middle part of the support arm 16 is pivotally connected to the upper part of the slider 14, and the air cylinder 17, which is pivotally connected to the slider 14, is connected to the base end of the support arm 16, and the free end of the support arm 16 is connected to the base end of the support arm 16. The side of the transport device 2 is placed in a lowered position (indicated by a solid line in the figure) above the conveyance surface of the conveyance device 2, and a raised position (indicated by an imaginary line in the figure) where the side is separated from the conveyance surface and allows the conveyance of the wood W. It is rotatable.

An alignment plate 18 is fixed to the above-mentioned support arm 16 on the side in contact with the transported wood W, and a rubber plate or the like is attached to the abutment surface of the alignment plate 18.

As shown in FIGS. 1 and 2, the above-mentioned clamping device 4 has the following features:
A slide stand 1 is installed on the side of the machine stand 6 opposite to the above-mentioned alignment device 3.
9 is provided so as to be movable between the position shown by the solid line on the transport start end side and the position shown by the imaginary line on the transport rear end side, and the rear end of the wood W is held between the upper part of this slide table 19. The holding arm 20 is rotatably pivoted.

As shown in FIG. 2, the above-mentioned slide stand 19 is
A stopper 6b is slidably attached to the upper guide rail 21 installed on the side in the conveyance direction, and fixed to the conveyance start end side and the conveyance end side of the machine platform 6 side.

6b regulates the sliding position, while the upper guide rail 2
Sliding is guided by a guide roller 23 pivotally attached to the lower part of the slide table 19 on a lower guide rail 22 installed parallel to the slide table 1.

Further, as shown in FIGS. 5 and 6, both ends of the chain 27 are stretched between a drive sprocket 25 pivotally connected to the drive unit 24 at the start end of the conveyance and a sprocket 26 pivotally connected to the end of the conveyance. are fixed with fixing means such as bolts 28 and nuts 29, and the slide table 19 is moved in synchronization with the transport of the above-mentioned transport device 2 by forward and reverse driving of the drive motor 30 of the drive section 24.

As shown in FIG. 7, the above-mentioned drive section 24 has a belt 33 stretched between a drive pulley 31 of a drive motor 30 fixed on the conveyance start end side and a pulley 32 pivotally attached to the lower part, and The driving force is transmitted to the drive sprocket 25 through the 32 sprockets 32a, each sprocket 34, 35, and the chain 36, and the entire clamping device 4 is reciprocated in the transport direction by forward and reverse driving of the drive motor 30.

Note that the moving position of the above-mentioned holding bag N4 is the slide table 19.
The gear 37a of the position detection motor 37 fixed at the bottom is engaged with the rack 38 installed in the transport direction at the bottom of the machine base 6.
By detecting the movement distance of the clamping device 4 by the rotation of the position detection motor 37, the movement of the clamping device 4 is made to correspond to the cutting dimension of the wood W, and the drive of the machine drive motor 30 is controlled at tIIJiI.
I do it.

As shown in FIGS. 5 and 6, the above-mentioned clamping arm 20 has a proximal end of a hollow support 40 formed at the end of a support @ 39 which is pivotally supported on the upper part of the above-mentioned slide table 19. Pivotally attached,
An air cylinder 41 is fixed to the upper surface of this support base 40, and the end of a sliding shaft 42 of the air cylinder 41 that slides on the conveying surface and a guide shaft 43 that is slidably housed within the support base 40. The end of the clamping head 44 is fixed to the base end of the L-shaped clamping head 44, and the clamping head 4 is fixed to the end of the support base 40 on the conveying surface side, facing the clamping head 44 described above.
Furthermore, an alignment plate 46 for aligning the rear ends of the timbers W in a state where they can be clamped is provided on the backs of the clamping heads 44 and 45 on the clamping sides.

A plurality of protrusions 44a are provided on the clamping surface of the aforementioned clamping head 44, and a rubber plate or the like is attached to the clamping surface of the other clamping head 45.

The above-mentioned clamping arm 20 connects the upper end of the air cylinder 47 pivoted to the lower part of the slide table 19 to the roadside side of the support base 40, and connects the clamping side end of the clamping arm 20 to the conveying surface of the conveying device 2. The lowered position (indicated by the solid line in the figure) and
It is provided so as to be rotatable to a raised position (indicated by an imaginary line in the figure) which is spaced apart from the transport surface and allows transport of the wood W.

As shown in FIGS. 1 and 5, a warp correcting device ¥48 for correcting the warp of the wood W is disposed at the lower part of the holding position of the above-mentioned holding bag vR4, and this warp correcting device 48 A warpage correction plate 49 having the same quality as the rollers 7 is installed between the rollers 7 and 7 at the lower part of the sandwiching position, and an air cylinder 50 fixed to a support plate at the lower part of the conveyance surface is connected to the back side of the warpage correction plate 49. Then, in the upper limit of the horizontal state of the warp correction plate 49 due to the operation of the air cylinder 500 and the guide shafts 51 and 51 on both sides, for example, the rear end of the warped wood W is lifted to absorb the warp, and the clamping arm 20 When not in use, the warpage correction plate 49 is lowered below the conveyance surface.

As shown in FIG. 8, the above-mentioned cutting device 5 has a guide rail 53 installed perpendicularly to the transport direction of the wood W on the back side of the tool rest 52 connected to the transport end.
A slider 54 is slidably attached to the turret 52, and an air cylinder 55 fixed to the side of the tool post 52 is connected to the slider 54 so as to be slidable back and forth. In addition, the rotary blade 56 and the drive motor 57 are mounted by pivoting the middle part of the stand 58, and
This installation is carried out by the air cylinder 5 which is pivotally mounted on the floating side of the stand 58.
9 is connected to the slider 54 and the rotary blade 56 is pivotally supported so that the free end side of the stand 58 moves up and down in synchronization with the sliding of the slider 54.

The rotation of the above-described rotary blade 56 is controlled by the driving force of the drive motor 57, with a drive belt 62 stretched between a pulley 60 fixed to the rotary blade 56 and a drive pulley 61 of the drive motor 57.

The above-mentioned tool rest 52 has protective covers 63 and 64 surrounding the parts where the rotary blades 56 on the top side and the back side move.
The presser cover 65 of the cut portion of the wood W on the upper surface side is fixed to the lifting platform 67 on the guide shaft 66, 66 set up on the side.
At the time of cutting, an air cylinder 68 connected to a lifting table 67 is operated, and the presser cover 65 is slid down onto the cut portion of the wood W.

In addition, each of the above-mentioned protective covers 63 and 64 is connected to a suction device (not shown) that sucks cutting chips during cutting.

The operation of the wood cutting device 1 configured in this way will be explained below.

First, in the case of lumber W having a constant length, such as a regular-sized piece of wood, the clamping arm 20 of the clamping device 4 is rotated to a position spaced apart from the transporting surface of the transporting device 2, and the alignment plate 18 of the aligning device 3 is aligned with the transporting surface. In the state of descending upward, the conveying device 2 is started and forwardly rotated in the conveying direction, and the wood W supplied onto the conveying surface is conveyed while being pressed against the regulation plate 8 on the side.

Then, when the tip of the wood W comes into contact with the alignment plate 18 of the alignment device 3, the clamping arm 20 of the clamping device 4 is lowered onto the conveyance surface, and the alignment plate 18 is moved twice and three times in the conveyance direction. It is rotated back and forth to abut against the tip of the wood W, and the rear end of the wood W is aligned so that it can be held by the clamping device 4.

In addition, in the case of lumber W having irregular lengths such as sawn timber products, the alignment plate 18 of the alignment device 3 is paused at a distance of +m from the conveyance surface of the conveyance device 2, and the wood W is fed onto the conveyance surface of the conveyance device 2. When the rear end of the wood W to be transported is supplied to the transport side beyond the clamping position of the clamping device 4, the clamping arm 20 of the clamping device 4 is lowered onto the transport surface, and then the transport Wa2 is reversed to remove the timber. The rear ends of the wood W are brought into contact with the alignment plate 46 of the clamping arm 20 two and three times to align the rear ends of the wood W so that they can be clamped.

Next, the clamping arm 20 that has descended onto the conveyance surface is slid in the direction of clamping the wood W, and the rear end of the timber W is clamped between the clamping heads 44 and 45 fixed to the clamping arm 20.

If the wood W is warped, the warp correction device 48 is activated to raise the warp correction plate 49 in parallel before the wood W is held in the clamp Vl position 4, and the rear end of the warped wood W is separated from the straight wood. After aligning the rear end of the wood W so that it can be held, the rear end of the wood W is held by the holding arm 20, and the warp correction plate 49 is lowered below the conveying surface.

Next, the alignment plate 18 of the alignment device 3 is rotated to a position away from the conveyance surface, and the conveyance device 2 is rotated forward in the conveyance direction.
The clamping device 4 that is clamping the wood W is moved in synchronization with the transportation of the transportation device 2.

Then, the wood W is supplied to the cutting device 5 from the tip thereof, and the presser cover 65 is lowered onto the supplied wood W. With the cut portion of the wood W fixed by the presser cover 65, the cutting device 5 is moved. After starting, the rotary blade 56 is moved in the width direction to cut the wood W. Furthermore, the clamping device 4 is moved intermittently in accordance with a predetermined cutting dimension of the wood, and a predetermined cut is made from the tip. Cut sequentially at the dimensions.

In addition, when cutting wood W such as a lumber product, after cutting and aligning the uneven tips of the wood W, the pieces are sequentially cut at predetermined dimensional positions set from the tips, and finally the uneven ends of the wood W are
To! Cut the ends to make the length the same.

After this cutting, the clamping device 4 is moved backward to the transport start end side, and the clamping arm 20 is rotated to a position separated from the transport surface and stands by.

After aligning the rear ends of the timbers W by moving the alignment device 3 back and forth or reversing the conveyance device 2, they are clamped by the clamping device 4, so that the timbers W with uneven lengths, such as sawn timber products, or warped When cutting wood W, the cutting positions of the pieces of wood W may shift due to vibration during cutting, and the length of the wood W should be cut to a predetermined cutting size that makes the most of the entire length of the wood W. It is possible to obtain a piece of wood W having the following dimensions.

Moreover, since the wood W is fed to the cutting device 5 in a state where the wood W is clamped, the wood W is
It is possible to prevent the mutual alignment from becoming irregular, and to quickly and accurately move the wood W to the position of the predetermined cutting dimension,
It is possible to cut the wood W with high dimensional accuracy, and at the same time, it is possible to increase the wood supply speed of the clamping device 4, thereby increasing the efficiency of cutting work and improving the cutting function of the device.

Note that although the wood alignment means constituting this invention corresponds to the conveying device 2 and the alignment device 3 of the above-described embodiment, the present invention is not limited to the configuration of the above-described embodiment.

For example, it may be used for cutting plate-shaped wood W such as veneer plywood, wood W made up of a plurality of pieces of wood W, etc.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a plan view of the wood cutting device, FIG. 2 is a side view of the wood cutting device, FIG. 3 is an enlarged side view showing the alignment device, and FIG. 4 is a top view of the wood cutting device. 3 is a rear view of the alignment device, FIG. 5 is an enlarged front view showing the clamping device, FIG. 6 is a side view of the clamping device shown in FIG. FIG. 8 is an enlarged front view showing the cutting device. W...Wood 1...Wood cutting device 2...
Conveying device 3... Aligning device 4... Clamping device
5... Cutting device 7... Roller 9, 11.
...1-ri 10... Drive motor 12... Drive belt 13... Guide shaft 14... Slider 15.1
7... Air cylinder 16... Support arm 18... Aligning plate 20... Clamping arm 44.45... Clamping head Fig. 3 3... Layering! ! Figure 6

Claims (1)

[Scope of Claims] 1. A wood cutting device that cuts the wood into predetermined dimensions by feeding the wood fed onto a conveyance surface to a cutting device disposed at the rear end of the conveyance side of the conveyance surface. A wood clamping means is provided at the front end of the transport side of the transport surface to clamp the rear end of the wood and supply it to the cutting device, and on the transport surface, the rear end of the wood can be clamped by the wood clamping means. A wood cutting device equipped with a means for aligning wood so that it is aligned in a perfect alignment.