JP2002046115A - Method and apparatus for feeding wood strand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a sectional shape of a wood strand before being formed into a building material chageable. SOLUTION: In a method for manufacturing a building material wherein an aggregate of wood strands 11 fed on a belt conveyor 80 is formed to the building material via a specific process, the feed of the wood strand 11 is carried out in a reciprocative mode of crossing a conveyance direction of the belt conveyor 80 at right angles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for supplying a wood strand.

[0002]

2. Description of the Related Art There have been many proposals for manufacturing building materials using wood strands. Regardless of which method is adopted, the wood strands need to be conveyed as an aggregate on a belt conveyor to a predetermined process before being processed into building materials. JP-A-08-091542
Japanese Patent Application Laid-Open Publication No. H11-163873 discloses an example of an apparatus that conveys this wood strand as an aggregate to a belt conveyor.

That is, in the apparatus disclosed in this publication, the wood strands deposited on the belt conveyor are conveyed. However, the wood strands are flattened during the conveyance and supplied to the subsequent process. It has become. Therefore, building materials formed from such a wood strand are logically necessarily limited to those having a rectangular cross section.

[0004]

However, when a building material formed from a wood strand is used in a site where design is required, such as a bed headboard,
In many cases, it is required that the cross-sectional shape of the building material is rich in change, and a building material manufactured using a conventional apparatus requires many processing steps to meet this demand.

[0005] Therefore, an object of the present invention is to provide a method and an apparatus for supplying a wood strand, which makes it possible to easily make a sectional shape of a building material irregular.

[0006]

Means for Solving the Problems The first technical means taken to solve the above-mentioned technical problem is that, as set forth in claim 1, "the aggregate of the wood strands supplied on the conveyor is In the method of manufacturing a building material formed into a building material through a predetermined process, the method of supplying the wood strand is such that the supply of the wood strand is performed in a reciprocating manner crossing the conveying direction of the conveyor at right angles. " It is.

According to a second technical measure taken to solve the above technical problem, a second aspect of the present invention is to provide a method of producing a wood strand from wood of a predetermined shape and dropping the wood strand. A strand generating mechanism, a conveyor that is located below the wood strand generating mechanism, and that conveys the wood strand coming from the wood strand generating mechanism to a predetermined process in order to form the wood strand into a building material, and a conveying direction of the conveyor. A wood strand supply device including a drive mechanism for reciprocating the wood strand generation mechanism so as to traverse at right angles.

[0008]

In the above-described method for supplying a wood strand according to the first aspect and the apparatus for supplying a wood strand according to the second aspect, the wood strand is dropped and supplied onto the conveyer in such a manner as to reciprocate dynamically in the conveying direction of the conveyer. By adjusting the reciprocating speed, the cross-sectional shape of the wood strand on the conveyor (when viewed from the transport direction)
Can be changed. Thus, the above request can be met.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, the wood strand supply device includes a wood strand generating mechanism 100 for generating and dropping a wood strand 11. The dropped wood strand 11 is transferred to a receiving jig 9 placed on a belt conveyor 80.
The sheets are stacked on the zero in the width direction, that is, the direction perpendicular to the conveying direction of the belt conveyor 80. Thus, the wood strand generation mechanism 100 reciprocally crosses the transport direction of the belt conveyor 80 at right angles in a reciprocating manner by the drive mechanism having the motor 110 as a main component.
If the crossing speed is constant, the cross-sectional area of the wood strands 11 accumulated on the receiving jig 90 (when viewed from the transport direction, that is, in the direction perpendicular to the paper surface) is rectangular, but the crossing speed is Is changed periodically, the receiving jig 9
The cross-sectional area of the wood strands 11 accumulated on 0 is irregular.

The wood strand generating mechanism 100 includes a feed roller 20 and a pressing roller 30 for sandwiching the wound wood sheet 10. When the feed roller 20 rotates intermittently, the wood sheet 10 is fed out along the guide plate 50 by a predetermined length (approximately 3 to 15 mm) forward (to the right in FIG. 1). . The wood sheet 10 of a predetermined length thus fed is cut by the cooperation of the movable blade upper blade 61 and the fixed blade lower blade 62 which reciprocate up and down in synchronization with the feeding. The cut wood sheet 10 having a predetermined length is connected to a wood strand 11.
As a result, the belt conveyor 80
It falls on the receiving jig 90 mounted on it. In order to stably perform the above-described cutting, the wood sheet 10 is pressed by the sheet guide 40 between the pressing roller 30 and the upper blade 61. Further, the width direction of the wood sheet 10 matches the wood fiber direction, and the wood sheet 1
The width of 0 is set to 60 cm or more.

FIG. 2 is a perspective view of a wood strand formation mechanism 1
00 will be described in detail. A motor 120 is fixed inside the housing 101. A shaft of the motor 120 and a shaft 140 rotatably supported by the housing 101 are connected by a chain 130. When the motor 120 rotates, the shaft 140 rotates. Then
A disk 150 is integrally mounted on the shaft 140,
The pin 151 provided on the disk 150 rotates the shaft 160 through the Geneva 161 by 90 degrees as the disk 150 rotates. Thus, the rotation of the shaft 160 is performed by mounting the gear 162 on the shaft 160, the gear 171 meshing with the gear 162, the gear 171 and the housing 101.
A shaft 170 rotatably supported on the shaft 170, a gear 172 fixed to an end of the shaft 170 outside the housing 101, and one inner end meshed with the gear 172 and the other inner end fixed to the feed roller 20. It is transmitted to the feed roller 20 via the gear 21. However, as is well known, the shaft 160 rotates only while the pin 151 is in the groove of the Geneva 161, so that the rotation of the feed roller 20 is intermittent. That is, the feed roller 20 intermittently feeds the feed roller 20, and the amount thereof (the feed amount of the feed roller 20) is determined by the gear ratio between the gear 162 and the gear 171; the gear ratio between the gear 172 and the gear 21; Determined by the diameter.

The crank 140 is provided at both ends of the shaft 140.
1 and 142 are provided, and a crankshaft 143 hanging down from the crank 141 and a crankshaft 144 hanging down from the crank 142 hold the upper blade 61. Thus, the rotation of the shaft 140 due to the rotation of the motor 120 causes the upper blade 61 to move up and down. The lengths of the crankshaft 143 and the crankshaft 144 are different. This is because the upper blade 61 comes into contact with the lower blade 62 sequentially from the longer crankshaft side over the entire width, and the wood sheet 10
In order to complete the disconnection.

The operation timing of the feed roller 20 is determined while the upper blade 61 is separated from the lower blade 62.
Is in contact with the lower blade 62 (at the time of cutting the wood sheet 10), the feed roller 20 does not operate and is stationary.

The housing 10 of the wood strand generating mechanism 100
Each side of 1 is movable along a rail 112 via a linear motion bearing 111. Thus, the housing 102
The motor 110 makes a reciprocating motion that crosses the conveying direction of the belt conveyor 80 at right angles when the motor 110 rotates forward and backward. An iron piece 104 is fixed to the housing 101, and the iron piece 104 is attached to the proximity switch 113A (11
When 3B) is closed, the motor 110 is changed from normal rotation to reverse rotation (from reverse rotation to normal rotation). Each time the iron piece 104 closes the proximity switch 113C, the motor 1
The number of rotations of ten is changed in relation to the direction of rotation of the motor 110. And iron piece 1
The moving speed of the housing 101 can be precisely adjusted by appropriately changing the mounting position and the mounting number of the housings 04. The proximity switches 113A, 113B, and 113C are connected to a control circuit in the control box 114, and the number of rotations and the direction of rotation of the motor 110 are appropriately changed according to an instruction from the control circuit.

Note that a change in the installation position of the proximity switches 113A and 113B results in a change in the amount of movement of the housing 101 and a turning point of reciprocation.

As described above, the wood strand 91
Are cut and cut one by one and are dropped and supplied onto the belt conveyor 80 in such a manner as to reciprocate in a reciprocating manner in the conveying direction of the belt conveyor 80. By adjusting the reciprocating speed, the The cross-sectional shape (when viewed from the transport direction) of the aggregate of the wood strands 91 can be changed.

However, the following effects are further obtained.

Since the wood strands 91 are cut and supplied one by one, the wood strands 91 are not entangled with each other and can be accurately aligned. This allows
The surface of the molded article can have a regular appearance.

Conventionally, in order to prevent entanglement, the length of the wood strand could not exceed 30 cm. However, building materials could not be formed using the length of the strand. Since there is no entanglement between them, the length of the wood strand 91 can be set to be longer than in the past.

Furthermore, the compression ratio can be increased by dropping and supplying the wood strand 91 so as to increase the thickness of the portion requiring the strength, and a predetermined portion of the completed building material can be reinforced (partial reinforcement).

Although the embodiment of the present invention has been described above, the present invention is not intended to be limited to the above-described embodiment.
Any method / apparatus may be used as long as the method / apparatus conforms to the gist of the present invention (for example, another conveyor or transfer means may be employed instead of the belt conveyor).

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the concept of the present invention.

FIG. 2 is a perspective view showing details of a wood strand generating mechanism which is a main part of the present invention.

[Explanation of symbols]

 11: wood strand 80: belt conveyor (conveyor) 100: wood strand generation mechanism 110: motor (drive mechanism)

Claims (2)

[Claims] 1. A method for manufacturing a building material, wherein an aggregate of wood strands supplied on a conveyor is formed into a building material through a predetermined process, wherein the supply of the wood strands is a reciprocation transverse to a conveying direction of the belt conveyor at right angles. A method for supplying a wood strand in an embodiment. 2. A wood strand generating mechanism for generating a wood strand from wood of a predetermined shape and dropping the wood strand, wherein the wood strand generating mechanism is located below the wood strand generating mechanism and falls from the wood strand generating mechanism. A wood strand supply device, comprising: a conveyor for transporting a wood strand to a predetermined process to form a wood strand into a building material; and a drive mechanism for reciprocating the wood strand generation mechanism so as to cross a transport direction of the conveyor at right angles.