JPH04296501A - Method and apparatus for forwarding lumber - Google Patents

Abstract

PURPOSE:To reduce the size of a lumber forwarding apparatus and effectively transfer wood materials by slidably providing a pair of lumber forwarding frames with respect to a foundation table, and also providing clamping devices on an endless belt-like support body in the lumber forwarding foundation table. CONSTITUTION:In a state wherein both ends of a wood material A are held by clamping device 15a, 15b, respective lumber forwarding frames 8, 9 at a feeding side and a discharging side become an integral state. In keeping this state, the rod 11a of a cylinder 11 expands and thereby the lumber forwarding frame 8 at the feeding side moves in the side of a circular saw disc 2. Following this, when the wood material A moves to a rotating circular saw blade 5, both left and right back plate parts of the wood material is started saw-splitting, and at the time when the rod 11a of the forwarding cylinder 11 fully expands, the wood material A is done saw-splitting in its midway. In the next place, the clamping devices 15a, 15b in the lumber forwarding frames 8, 9 advance together in the lumber forwarding direction while holding the wood material A, the remaining part of the wood material A is conducted saw-splitting.

Description

[Detailed description of the invention]

0001

[Purpose of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for feeding raw wood in a material feeding device applied to a saw machine for processing raw wood into square timbers and the like.

0002

[Background of the invention] When processing logs into square timbers, usually
The raw wood is held by a scraper on a transport frame in the form of a transport vehicle, and is advanced toward the sawing machine while cutting both the left and right back plates of the log with a saw blade to create a so-called drum sawing state. After repeating this several times, the remaining backboard portions of these accumulated drum-saw logs are similarly sawed off with a saw blade. This type of wood transport frame is preferable because it holds the logs using a scraper device and its movement trajectory is precisely set, allowing for accurate sawing. In the case of logs, the next log could not be loaded unless the lumber truck returned to the supply position of the log, and there was a certain limit to increasing work efficiency.

[0003]Recently, therefore, a device has been developed that improves work efficiency by reciprocally sawing logs while using a feed truck type device that can perform accurate sawing. In other words, on the outward journey, this device cuts off both the left and right backboard parts of the log to perform so-called drum-grinding, and when this process is completed, the log is rotated 90 degrees around its axis, and on the return journey, the remaining backboard parts of the log are ground. It is milled and processed into square timber.

By the way, when using such a method, in order to prevent so-called turning marks from being made on the log by manipulating the deflection angle in the case of a circular saw blade on the forward and return trips of the log, it is necessary to A mechanically complex mechanism such as a declination mechanism is required, and accordingly, the price becomes correspondingly high, and careful attention to maintenance is also required.

On the other hand, in the method of sawing and splitting logs with an endless body such as a chain conveyor, the next log can be supplied as long as the sawing of the log is completed and the space on the supply side is freed, so it is possible to supply the next log in almost no time. It is preferable in terms of improving work efficiency as it allows continuous sawing and splitting work.

However, when using a single chain conveyor from the supply position to the discharge position of logs, it is not possible to attach a scraper device, and accurate sawing cannot be expected. Of course, it is possible to attach a scraping device while using a chain conveyor by holding the front and back of log A with separate chain conveyors 8a' and 9a' as shown in Fig. The approaching end of each conveyor disposed in
The chain conveyors 8a' and 8a' must be provided on the same plane.
If 9a' is arranged, the ends thereof will interfere with each other.

[0007] For this reason, the casing devices 15a', 15b'
Chain conveyors 8a', 9 that can hold logs by
a' must necessarily be formed vertically shifted as shown in FIG. For this reason, it is not possible to press down the raw wood A evenly at the front and rear ends, and in particular, the chain conveyor 9a' located above must be equipped with a means to prevent the chain from sagging, or the working position must be adjusted. Since the chain conveyor 9a' is disposed above the chain conveyor 9a', problems arise such as restrictions on the arrangement of other related devices at the processing site.

[0008]

[Technical matters attempted to be developed] The present invention was developed in view of the above background, and firstly, the method of finishing the square timber by repeating one-way sawing as in the past, and the efficient input of logs. using an endless body such as a chain conveyor as a supporting body for material transport, and furthermore providing a scraper device to avoid the uncertainty in holding logs by a supporting body consisting of a chain conveyor etc.
Furthermore, in order to hold logs using a scraping device, it is a prerequisite that the material feeding frame, which is a supporting unit consisting of two chain conveyors, etc., is arranged on the same plane, so that the material feeding can be carried out efficiently and accurately. This is an attempt to develop a method and a material feeding device.

[0009]

[Structure of the invention]

[Means for achieving the object] That is, the material feeding method, which is the first invention according to the present application, slides a pair of material feeding frames connected in series in the longitudinal direction and capable of changing the distance between them relative to the base. In addition, a scraper device is provided on the endless belt-shaped supports of these material feeding frames, and the raw material is transferred to the scraper device on each support by the slide of these material feeding frames and the drive of each support in these material feeding frames. It is characterized by being transported while being held by the handle.

[0010] Also, the material feeding device, which is the second invention according to the present application, is provided with a pair of material feeding frames linked in series in the longitudinal direction so as to be slidable with respect to the base, and the pair of material feeding frames are connected in series in the longitudinal direction. A rod of a delivery cylinder attached to the base is connected to the material feeding frame on the raw material supply side, and a raw material fixing cylinder is provided between each of the pair of material feeding frames. It is something. These inventions aim to achieve the above object.

[0011]

[Operation of the invention] In the present invention, after the raw wood is supplied onto the material feeding frame on the supply side, the raw material feeding frame itself is moved in the material feeding direction by the extension of the delivery cylinder, whereby the raw wood is transferred to a certain extent, and then The logs are continuously transported by driving each winding body on each material transport frame.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically explained below based on the illustrated embodiments. Reference numeral 1 in the figure is a lumber sawmill to which the present invention is applied, which includes a circular saw machine 2 and a raw wood A on this circular saw machine 2.
It consists of a material feeding device 3 for feeding. A circular saw machine 2 has two circular saw blades 5 and a motor M that drives them, mounted on a base frame 4.
1. Incidentally, as shown in FIG. 4, such a circular saw machine 2 saws both back plate parts of log A when viewed from the cross-sectional direction, and then rotates this log A by 90 degrees and cuts both back plates in the same way. The back plate is finally processed into square timber by sawing and splitting. Of course, the material feeding device 3 of the present invention may be used in combination with a band saw.

Next, the material feeding device 3 has rails 7 attached to the bases 6 installed in series at the front and rear of the circular saw machine 2, and on the rails 7 are provided a supply side and a discharge side for raw wood. Material feeding frames 8 and 9 each having endless belt-shaped supports 8a and 9a are provided so as to be slidable in the longitudinal direction with respect to the rail 7 via wheels 10 attached to these frames 8b and 9b, respectively. It will be done. Also, the material feeding frame 9 on the discharge side
A log kicker 9c for discharging the processed log A from the material feed frame 9 is provided on the upper side of the log. Further, a delivery cylinder 11 is provided on the base 6 of the material feeding frame 8 on the supply side, and the end of the rod 11a is fixed to the frame portion 8b of the material feeding frame 8 on the supply side. Further, a raw material fixing cylinder 12 is provided on the frame portion 9b of the material feeding frame 9 on the discharge side, and the end of the rod 12a is fixed to the frame portion 8b of the material feeding frame 8 on the supply side.

Incidentally, the delivery cylinder 11 is for advancing the material feeding frame 8 on the supply side toward the circular saw machine 2, and in the initial state, the rod 11a is in a contracted state. Further, the raw material fixing cylinder 12 is provided to bring the material feeding frame 8 on the supply side and the material feeding frame 9 on the discharge side closer to each other, and in the initial state, the rod 12a is in an extended state.

Next, the structure of each material feeding frame 8, 9 will be specifically explained. Each of the material feeding frames 8 and 9 consists of endless belt-shaped support bodies 8a and 9a wound around two sprockets 13, and each of the support bodies 8a and 9a is equipped with, for example, two shearing devices 15a and 15b. Provided at intervals. Further, the output shaft of a drive motor M2 is connected to the sprocket 13 on the transfer direction side of each of the material feeding frames 8 and 9 via an appropriate gear head. In addition, in such a structure, the support bodies 8a and 9a are driven by the drive of the drive motor M2, and the support bodies 8a and 9a are driven by the drive of the drive motor M2.
a also stops, but in order to more reliably control the drive of the supports 8a, 9a, a brake mechanism may be provided that acts on the supports 8a, 9a.

As shown in FIG. 6, the supports 8a and 9a are made by combining a link block 18 in which a convex portion 16 and a concave portion 17 are formed at the front and rear in the direction of movement, and the convex portion 16 and the concave portion 17 are rotatably assembled. It is made up of continuous connections. Further, each link block 18 is formed with a support portion 19 on the side that supports the raw wood, while a guide groove 19a is formed on the opposite side.
and a receiving groove 19c are formed. Incidentally, as shown in FIG. 4, the support part 19 holds the log A above the upper surface of each link block 18 during the transportation of the log A to prevent the lower end of the circular saw blade 5 from coming into contact with the support 8a. It is for. The guide groove 19a is slidably fitted into a guide rail 19b provided inside the supports 8a, 9a to prevent the supports 8a, 9a from shaking vertically and horizontally. The groove 19c is a portion that engages with the sprocket 13. Note that a belt, chain, or other endless body may be applied to the supports 8a, 9a.

Furthermore, the scraper devices 15a and 15b in each of the material feeding frames 8 and 9 are used to hold the log A by acting on both end surfaces of the log A, and this device is designed to hold the log A by acting on both end surfaces of the log A, and this device is designed to hold the log A by acting on both end surfaces of the log A. , a plurality of holding protrusions 21 are provided on the surface of the log holding side. Note that the scraper device 15a in the material feeding frame 8 on the supply side and the material feeding frame 9 on the discharge side
The sludge device 15b is provided so that the respective holding protrusions 21 are opposed to each other. In addition, in this way, each of the material feeding frames 8 and 9 has a plurality of scraper devices 15a and 1, respectively.
5b can improve the efficiency of material feeding, and this point will be described later. Further, each of the material feeding frames 8 and 9 may be provided with three or more scraper devices 15a and 15b, respectively.

The sawmilling machine 1 equipped with the material feeding device according to the present invention has the structure as described above, and the operating state of this machine will be explained step by step below. i) Initial stage First, in the initial stage, as shown in FIG. 7(a), the rod 11a in the delivery cylinder 11 is contracted, so that both material feeding frames 8 and 9 are moved to the starting end side, and each material feeding material is One of the scraper devices 15a and 15b in the frames 8 and 9 is also closer to the start end side, respectively. Further, in this state, the rod 12a in the raw material fixing cylinder 12 is in an extended state, and as a result, the material feeding frame 8 on the supply side and the material feeding frame 9 on the discharge side are separated to some extent, so that both the material feeding frames 8,
The raw wood A can be supplied between the sludge device 15a and the sludge device 15b at 9 with plenty of room.

ii) Raw material holding process After supplying the raw wood A to the material feeding frame 8 on the supply side and setting the position of the raw wood A by the positioning device 22 as shown in FIG. Raw material fixing cylinder 12 as shown
By contracting the rod 12a in , the material feeding frame 9 on the discharge side approaches the material feeding frame 8 on the supply side. As a result, the raw wood A is held by the scraping device 15a on the material feeding frame 8 on the supply side and the scraping device 15b on the material feeding frame 9 on the discharge side. Incidentally, at this time, the drive motor M2
is in a stopped state, and the supports 8 on each material feeding frame 8, 9 are in a stopped state.
a, 9a are in a substantially braked state.

iii) Material feeding and processing process by moving the entire material feeding frame As shown in FIG.
5a, 15b, the material feed frames 8, 9 on the supply side and the discharge side appear as if they were integrated, and the rod 11a of the feed cylinder 11 remains in this state.
expands, and the material feed frame 8 on the supply side moves toward the circular saw machine 2. At the same time, when the log A advances to the rotating circular saw blade 5, sawing of both the left and right back plate parts of the log A starts, and when the rod 11a of the delivery cylinder 11 is fully extended, the log A is halfway through the rotation. Grinding is done until

iv) Material feeding and processing process by running the support When the rod 11a of the delivery cylinder 11 is fully extended, each support 8a of each material feeding frame 8, 9, as shown in FIG. 8(b), 9a are driven at the same speed, the scraper devices 15a and 15b in each of the material feeding frames 8 and 9 move in the material feeding direction while holding the raw wood A. As a result, the remaining portion of log A is sawn, and then Fig. 9
As shown in , when the log A is almost transferred to the material feeding frame 9 on the discharge side, the state in which the log A is held by both the scraper devices 15a and 15b is released, and the log A is discharged to the side by the log kicker 9c. By the way, the Kasugai device 15a, 1
5b may be released by extending the raw material fixing cylinder 12 described above to leave a space between them, or by moving only the support body 8a (9a) of the material feeding frame 8 (9) and removing the material from the scraper device. The process may be performed with an interval between 15a and 15b.

v) Return to the initial stage When the processing of one log A is completed, the rod 11a of the delivery cylinder 11 contracts, and the rod 1 of the raw material fixing cylinder 12 contracts.
As 2a expands, it returns to the initial stage. In addition, by slightly driving the supporting bodies 8a and 9a of the material feeding frames 8 and 9 from the position in which the raw wood A was discharged, the other sloughing devices 15a and 15b of each conveyor are moved.
As shown in FIG. 9, the log A' to be processed next is accepted. Incidentally, when returning to the initial stage in this way, the log A' to be processed next is already waiting beside the position of the material feeding frame 8 on the supply side in the initial stage, and each material feeding frame 8 , 9 return to the initial stage, this raw wood A' is fed onto the material feeding frame 8 on the supply side, and thereafter the material is fed and sawed in the same steps as described above.

[0023]

[Effects of the Invention] In the conventional method of finishing square lumber by repeating one-way sawing, the present invention allows two material feeding frames to be arranged on the same plane, and moreover, even in the longitudinal direction of the material feeding device. Since it does not require any length longer than necessary, it is possible to provide a relatively compact material transport device, and since it is possible to transport logs by linking the material transport stand and the scraper device, it is possible to transport logs efficiently. Therefore, it is possible to improve work efficiency.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a sawmill to which a material feeding device of the present invention is applied.

FIG. 2 is a side view of the same as above.

FIG. 3 is a plan view of the same as above.

FIG. 4 is a sectional view showing the support body broken at an appropriate point at the starting end.

FIG. 5 is a side view showing an enlarged end portion of the support body.

FIG. 6 is an enlarged perspective view of a link block that is a component of the support.

FIG. 7 is an explanatory diagram showing the process from the initial stage of waiting for the supply of logs to holding the logs.

FIG. 8 is an explanatory diagram showing a process of sawing and splitting raw wood by extending the delivery cylinder and a process of sawing and splitting the raw wood by moving the support body.

FIG. 9 is an explanatory diagram showing the steps from finishing sawing to returning to the initial stage.

FIG. 10 is a side view schematically showing a conventional material feeding device using a chain conveyor.

[Explanation of symbols]

1 Lumber equipment 2 Circular saw machine 3 Material feeding device 4 Base frame 5 Circular saw blade 6 Base 7 Rail 8 Material feeding frame 8a Support body 8b Frame portion 9 Material feeding frame 9a Support body 9b Frame portion 9c Log kicker 10 Wheel 11 Delivery Cylinder 11a Rod 12 Raw material fixing cylinder 12a
Rod 13 Sprocket 15a Scraping device 15b Scraping device 16 Convex portion 17 Recessed portion 18 Link block 19 Support portion 19a Guide groove 19b Guide rail 19c Receiving groove 20 Block 21 Holding protrusion 22 Positioning device A Log A' Log M1 Motor M2 Drive motor

Claims (2)

[Claims] Claim 1: A pair of material feed frames that are connected in series in the longitudinal direction and can change the distance from each other are provided so as to be slidable with respect to the base, and an endless belt-shaped support of the material feed frames is provided. is equipped with a cassette device,
A material feeding method characterized in that the raw material is transferred while being held by a scraper device on each supporting body by sliding these material feeding frames and driving each support body in these material feeding frames. 2. A pair of material feeding frames connected in series in the longitudinal direction are provided so as to be slidable with respect to the base,
A rod of a delivery cylinder attached to the base is connected to the material feeding cradle on the raw material supply side of the pair of material feeding pedestals, and a raw material fixing cylinder is provided between each of the pair of material feeding pedestals. A material feeding device characterized by comprising: