JP2691636B2 - Sawmill - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lumbering apparatus capable of cutting curved wood along an axis.

(Prior Art) Since wood is generally heavy, a lumbering machine is provided with a stand roller or the like so that wood can be relatively easily fed to and returned from a saw blade. In addition, not only straight timber but also curved timber. Conventionally, an apparatus for processing such a curved wood into a thin plate, a square timber and the like like a straight wood has been proposed.

Examples of such an apparatus include those described in the microfilms of JP-B-55-20482, JP-B-45-32120, and JP-A-53-111893 (JP-A-55-29256).

The material feeding device described in Japanese Utility Model Publication No. Sho 55-20482 is provided with table rollers that can be inclined in any direction in the horizontal direction before and after the band saw, and an endless conveyor is arranged between them. It is a thing.

The sawmill disclosed in Japanese Examined Patent Publication No. 45-32120 is equipped with table rollers that can be tilted in the horizontal direction in the front and rear of the band saw as in the above-mentioned material feeder.

The declination table roller device described in the microfilm of Japanese Utility Model Application No. 53-111893 (Japanese Utility Model Publication No. 55-29256) is equipped with a base roller that can be tilted in the horizontal direction by advancing and retracting the rod of the air cylinder. It is a thing.

(Problems of the prior art) By the way, sawn wood generally has a considerable length and a weight of several hundreds of kilograms, and the lumbering equipment is a heavy product that the wood wins long. The structure must take into consideration This also applies to the case of a sawmill that supports sawing of curved wood.

However, it cannot be said that the devices described in the above-mentioned publications and the microfilm are sufficiently considered in this respect.

That is, although the device described in the above publication guides the wood with the base roller inclined in the horizontal direction, in reality, the curved wood is sent out from one of the base rollers that sandwich the band saw in the front-back direction toward the ruler. , Using the reflection of a ruler, send it to the other base roller, and send it in a curved shape as a whole. In this method, it is inevitable that human intervention is required to prevent the orbit of the timber from deviating, but as mentioned above, it is actually difficult to control the movement of long and heavy timber by human hands. It's difficult.

In the device described in the microfilm, a plurality of table rollers arranged in parallel are interlocked with each other through a machine frame that moves forward and backward by an air cylinder, and the table rollers are inclined at the same angle in the horizontal direction. become. With this,
When a curved piece of wood is placed on the base roller, the angle between the axis of the wood and the axis of the base roller greatly differs in the front-back direction near the band saw and at a place far from it, so it is long and heavy. It is difficult to smoothly guide wood.

(Object of the present invention) The present invention enables even a long and heavy curved wood to be cut along the axis to minimize the occurrence of edges during lumbering so that the wood can be effectively utilized without waste. The purpose is to

(Structure of the present invention) The structure of the present invention taken to solve the above problems and achieve the object is as follows. That is, the present invention is a sawmilling device, which is provided with a band saw device, a feed device that feeds wood while sandwiching it, and the band saw device that is sandwiched in the front and back. The front roller device and the rear roller device are provided, and the front roller device and the rear roller device are installed on the base and in parallel in the front-rear direction on the base, and one end side of the shaft is The required number of base rollers, which are pivotally supported and the other end of which is axially supported by a slide bearing that is movable in the front-rear direction within a certain range, and the slide bearing, are arranged so that the slide length increases as the distance from the band saw device increases. A roller shaft declination device having an operating means for interlocking so as to lengthen proportionally, and a horizontal opening angle centered on the pivot side of the table roller becomes farther from the band saw device. Grows proportionally Characterized in that it is a possible urchin adjustment, a lumber device.

The structure of the feeding device is not particularly limited as long as the timber can be sandwiched and reliably fed to the cutting side. For example, a device having a required number of nipping rollers on one side of the upper and lower sides and a drive roller in the form of a pinion gear that bites wood on the other side is provided. It should be noted that it is optional to be able to adjust the sandwiching thickness within a certain range so that it can cope with woods of various diameters.

The front roller device and the rear roller device serve as a platform for feeding the curved wood along the axial direction, and are arranged front and back with the band saw device interposed therebetween.

The base is attached to the floor, and a required number of base rollers are installed side by side in the front-rear direction. One end of the shaft of each base roller is pivotally supported, and the structure is such that the other end can move in the front-back direction. The other end is axially supported by a slide bearing that is movable in the front-rear direction within a certain range.

The structure of the roller shaft declination device is not particularly limited as long as it has an operating means for interlocking the slide bearing so that the slide length becomes proportionally longer as the distance from the band saw device increases.

Then, by the operation means, the opening angle in the horizontal direction centering on the pivot side of each table roller may be proportionally increased as the distance from the band saw device increases, before the lumbering or during the lumbering operation. It is possible to make the angle between the axis of the wood and the axis of the stand roller substantially right angle in each stand roller including the part near the band saw and the part far from the band saw in the front-rear direction.

Therefore, simply by placing a long and heavy curved wood on the base roller and sending it to rotate the base roller,
It can be naturally fed with a certain curvature along the axial direction of the timber, and cutting of the curved timber along the axial line can be performed easily and surely.

It should be noted that it is optional to provide the front roller device and the rear roller device with a returning device for returning wood.

(Example) The present invention will be described in more detail based on an example shown in the drawings.

FIG. 1 is an explanatory view showing the structure of one embodiment, and FIG. 2 is an explanatory view showing the structure of a slide bearing portion.

Reference numeral A is a lumbering apparatus, which includes a band saw device 1. The saw blade 10 of the band saw device 1 is located substantially at the center of the sawing machine A.

A feeding device 2 is provided in the vicinity of the band saw device 1 to feed wood while sandwiching it. The feeding device 2 comprises a driving roller device 21 and a holding table roller device 22. The drive roller device 21 includes swing arms 211 and 212 that are swingably provided on a fixed shaft 210.
It has.

A bar 213 is installed at a substantially middle portion between the swing arms 211 and 212. Further, a rod head of an oil cylinder S1 arranged above is rotatably attached to the bar 213.

A wide pinion gear-shaped drive roller 214 is rotatably supported at the tip ends of the swing arms 211 and 212. A gear 215 is coaxially provided on the drive roller 214, and the chain C
Is driven by a motor (not shown).

A nipping table roller device 22 is disposed below the drive roller device 21. The nipping table roller device 22 is provided with roller tables 221 and 222. Two nipping rollers 223 are installed between the roller tables 221 and 222 on the front side of the saw blade 10 of the band saw apparatus 1 and on the back side thereof. There is.

According to this structure, the drive roller 214 is moved up and down by the operation of the oil cylinder S1, the wood is sandwiched between the drive roller 214 and each of the sandwiching rollers 223, and the drive roller 214 is driven to feed the wood to the cutting side. it can.

Reference numeral 29 is a ruler for setting the cutting size of wood.

A front roller device 3 and a rear roller device 3a are provided on the front and rear sides of the band saw device 1. The front roller device 3 and the rear roller device 3a are structurally substantially the same although they are symmetrical in the front-rear direction, so only the structure of the front roller device 3 will be described. In the drawings, the rear roller device 3a is designated by the same reference numeral as that corresponding to the front roller device 3.

The front roller device 3 has a base 30. The base 30 is provided with leg portions 301 and 302 that are erected at a required interval.
Frames 303 and 304 are provided above the 301 and 302.

Five rollers 31 are installed on each of the mounts 303 and 304. The shaft 310 of each roller 31 is pivotally supported on one end side (attachment side to the pedestal 303) so that the roller shaft eccentricity device 5, which will be described later, can cope with the axial eccentric motion of each roller 31. On the other hand, five slide bearings 32 are attached to the pedestal 304 at substantially equal intervals and slidable in the front-back direction within a certain range.

 Please refer to FIG.

On the frame 304, elongated guide holes 309 are formed at five locations at substantially equal intervals. The slide bearing 32 is slidably attached to the elongated guide hole 309 without being removed. The slide bearing 32 is composed of a bearing part 320 on the upper side of the guide elongated hole 309 and an engaging base piece 321 on the lower side, and the bearing part 320 is arranged so that the end of the shaft 310 of the base roller 31 can be slightly adjusted. It is worn. The base roller 31 is a roller body 312.
It has a structure in which a shaft is rotatably attached to a shaft 310.

Further, a tip of a swing arm 51 of a roller shaft eccentric device 5 described later is attached to each engaging base piece 321 via an engaging pin 322. A long hole 510 is provided at the tip of the swing arm 51, and the engaging pin 322 penetrates the long hole 510 and is attached to the engaging piece 321 side.

Each swing arm 51 is formed to have the same length, and the lower end portion is connected by a connecting bar 52 via a hooking pin 512.

Further, the middle portion of each swing arm 51 is a leg portion 302 of the base 30.
It is rotatably attached to a bearing bar 53, which is inclined and fixed, through a hooking pin 513. The inclination of the bearing bar 53 is set to be higher toward the band saw device 1 side. When the connecting bar 52 is moved as shown by the arrow, the deflection angle of the swing arm 51 is relatively increased as the distance from the band saw device 1 increases. It is a structure that becomes large.

An oil cylinder S2 rod head is attached to the front end of the connecting bar 52, and the slide bearings 32 slide by the operation of the oil cylinder S2, so that the rollers 31 are axially declined.

As described above, the rear roller device 3a is the band saw device 1
It has a front-rear symmetric structure with respect to the front roller device 3.

Further, in the present embodiment, the oil cylinder is used as the driving means for the both roller devices 3 and 3a, but the invention is not limited to this, and other driving means such as driving the screw jack with a geared motor may be used. You can also do it.

A return roller device 4 is attached to the front roller device 3 and the rear roller device 3a.

The return roller device 4 is a base 30 of the front roller device 3.
It has a supporting leg 401 arranged in parallel with the supporting leg 301 and a supporting leg 401a arranged in parallel with the rear roller device 3a.

Five base rollers 42 are installed between the base 403 of the support leg 401 and the base 303 of the support leg 301. Also, mount 303 and mount 403
Notches 400 are provided at two positions before and after.

A vertical traverse device 6 is provided corresponding to the notch 400. The elevation traverse device 6 has traverse chains C6 and C7 arranged substantially at right angles to the feeding direction of wood. One ends of the transverse feed chains C6, C7 are hooked on sprockets 61, 63 of the motors M2, M3, and the other ends are hooked on sprockets 62, 64 positioned close to the mount 304. The traverse chains C6 and C7 can be raised and lowered by an elevating mechanism (not shown), and are normally below the base roller 42, and when the wood is transversely fed, they rise above the base roller 42. In addition,
The traverse chains C6 and C7 can be independently driven in the forward and reverse directions, which allows fine adjustment of the direction of the wood.

Two base rollers 40 and three drive rollers 41 are installed between the base 403a of the support leg 401a and the base 303a of the rear roller device 3a. The base rollers 40 are provided at both ends of the pedestal 403a, and the drive rollers 41 are provided between them.
Further, cutouts 400a are provided at two positions before and after the mount 303 and the mount 403a.

A vertical traverse device 6a is provided corresponding to the notch 400a. The elevating and traversing device 6a includes a motor M1, and the motor shaft 60 has sprockets 65, 67 corresponding to the notches 400a.
Is provided. Further, sprockets 66 and 68 are provided near the base 304, and transverse feed chains C5 and C4 are hung on the sprockets 65 and 66 and the sprockets 67 and 68 at right angles to the feeding direction of the wood.

The transverse feed chains C4 and C5 can be raised and lowered by an elevating mechanism (not shown), and are usually below the base roller 40 and the drive roller 41, and when the wooden piece is transversely fed, they rise above the rollers.

The shaft 410 of each drive roller 41 has sprockets 43, 44, 45
Is installed. Sprocket 43, 44, 45 is a stand
It is provided on the outside of 403a, and a chain C3 is hung on each sprocket. Further, a sprocket (not visible in the figure) is coaxially attached to the outside of the sprocket 43, and the sprocket 69 of the motor M4 disposed below is mounted.
A chain C2 is hung between and. According to this structure, by driving the motor M4, each drive roller 41 rotates in the direction of the arrow and returns the wood to the front side.

Two table rollers are provided in the middle of the return roller device 4.
46 are arranged.

(Operation) FIG. 3 is an explanatory view showing a state in which the rollers of the front roller device are axially deviated, and FIG. 4 is a schematic plan view showing a use state. The operation of this embodiment will be described with reference to FIGS. 1 to 4.

First, the wood W to be lumbered is subjected to an axial declination of each base roller 31 of the front roller device 3 and the rear roller device 3a according to the degree of bending. When the oil cylinders S2 and S3 are operated to push out the rods, the slide bearings 32 on the pedestals 304 of the respective bases 30 slide proportionally larger as the roller shaft declination device 5 moves away from the band saw device 1. As a result, each base roller 31 is also proportionally axially deviated with the outermost (front end portion in the front roller device 3 and rear end portion in the rear roller device 3a) horizontal opening of the base roller 31 being the maximum. To do.

In addition, when the curvature of the wood is large, the angle of the shaft deviation angle is adjusted to be large, and conversely, when the curvature of the wood is small, the angle of the shaft deviation angle is adjusted to be small appropriately.

Then, as shown in FIG. 4, when the cutting position is determined by the contact plate 29 and the wood W is fed in the cutting direction by the feeding device 2, since each base roller 31 is substantially at right angles to the axis of the wood W, it is natural. It is sent smoothly.

After cutting the wood W, the traverse feed device 6a is raised, the wood W is lifted by the traverse feed chains C4 and C5 and sent to the return rod device 4 side, and the traverse feed device 6a is lowered to move the base rod.
The wood W is placed on the 40 and the drive roller 41. Next, the motor M4 is operated to drive the drive roller 41, and the worker returns the wood W to the front side of the return roller device 4 with his / her hand. Then, the traverse device 6 is lifted and the traverse chain is
The wood W is lifted by C6 and C7, the motors M2 and M3 are operated to feed it to the front roller device 3 side, and the lateral feed device 6 is lowered to place the wood W on the base roller 31. Since the lateral feed chains C6 and C7 can be independently driven in the forward and reverse directions, adjustments such as when the orientation of the wood is deviated are possible.

The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims.

(Effects of the Invention) The present invention has the above-mentioned configuration and has the following effects.

That is, before the lumbering or during the lumbering work, the slide bearings are interlocked so that the slide length becomes proportionally longer as the distance from the band saw device increases. If the opening angle is adjusted so as to increase proportionally as the distance from the band saw device increases, the angle formed by the axis of the wood and the axis of the table roller in each table roller including the part far from the band saw in the front-back direction Can be almost right angle.

Therefore, simply by placing a long and heavy curved wood on the base roller and sending it to rotate the base roller,
It can be naturally fed with a certain curvature along the axial direction of the timber, and cutting of the curved timber along the axial line can be performed easily and surely.

[Brief description of the drawings]

The drawings show an embodiment of the present invention, FIG. 1 is an explanatory view showing the structure of one embodiment, FIG. 2 is an explanatory view showing the structure of a slide bearing portion, and FIG. 3 is a roller of a front roller device. FIG. 4 is an explanatory view showing a declined state, and FIG. 4 is a schematic plan view showing a use state. A: Sawmill device 1: Band saw device 2: Feed device 3: Front roller device 3a: Rear roller device 30: Base 31: Stand roller 310: Shaft 32: Slide bearing 5: Roller shaft declination device

Claims (1)

(57) [Claims] 1. A lumbering apparatus, which comprises a band saw device (1), a feeding device (2) which is arranged in the vicinity of the band saw device (1) for feeding wood while sandwiching it, and the band saw device (1). 1) a front roller device (3) and a rear roller device (3a), which are arranged so as to sandwich the front and rear, and the front roller device (3) and the rear roller device (3a).
Is installed in parallel with the base (30) in the front-rear direction on the base (30),
One end side of the shaft (310) is pivotally supported, and the other end side is pivotally supported by a slide bearing (32) movable in a certain range in the front-rear direction, and a required number of base rollers (31), and the base rollers. A roller shaft declination device (5) having an operating means for interlocking the slide bearing (32) of (31) so that the slide length becomes proportionally longer as the distance from the band saw device (1) increases. The horizontal opening angle of the base roller (31) about the pivot side can be adjusted so as to be proportionally increased as the distance from the band saw device (1) increases. , Sawmill equipment.