JPS591206A - Width forming board and its manufacture - 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] Conventionally, narrow boards made from raft lumber or backboards have been used as roof boards, lath boards, floors, etc., but since the construction process requires a lot of labor, wide plywood boards have been used. As a result, demand for the above-mentioned narrow boards decreased significantly.

Therefore, as a way to make narrow boards into wide boards, it was proposed to cut the sides of the narrow boards with a planer and glue them together.
In addition to the process of cutting, the process of applying adhesive was extremely troublesome, and in addition, it required a curing period for the adhesive to harden, resulting in high costs and not being put into practical use.

In addition, the narrowed wide boards made with the above-mentioned adhesive had the disadvantage of poor air permeability because the mating surfaces of the boards were in close contact with each other.

The present invention is aimed at improving the above-mentioned drawbacks, and the present invention is aimed at improving the above-mentioned drawbacks, and the present invention is to drill a large number of holes on both sides of a plurality of sawn boards whose surfaces and side surfaces are sawn. The boards were arranged in parallel and connected by press-fitting dowels into the opposing holes, and a large number of holes were drilled in the sides of a plurality of sawn boards whose surfaces and sides were sawn. The feature is that adhesive is put into the hole, and then dowels are press-fitted into the opposite hole to connect and connect them in parallel.

To explain the embodiment shown in the drawings below, a is a narrow machine made from small-diameter wood such as raft lumber or a back board, and the upper and lower board surfaces, b, and side surfaces C and C are sawn. Both ends of the cage are cut with a saw to a certain length, and holes f...
is perforated.

Immediately after putting the water-soluble adhesive into the hole f on one side of the narrow board a, press-fit the dry compressed wooden glue.
Put the adhesive listed in -L into the holes f... on one side of the other narrow board 1, align these holes f... with the dowels g... and push them in, and then press this second narrow board 1. Adhesive is put into the hole d on the other side, and the dowel g is press-fitted.

By continuing to make such narrow strips one after another, a continuous strip of constant width is obtained, which is then cut horizontally (in the length direction of the narrow strip) to the desired length (cutting to a fixed length). A thin board with a width of

Note that the length of the narrow board a may be determined by cutting both ends after narrowing the width. @If you want to make it narrow, cut it to the specified length, and if you want to make a narrow board of a certain width thinner, use 2.
By omitting the process of narrowing the width using the dowels g every five sheets, a thin board with a predetermined width can be obtained by simply doing so.

The thin boards obtained in this way do not need to be finished by cutting the joint surfaces with a planer, and even if there is a selvage part on a part of the joint surface, it can be connected as is with dowels, etc. Further, after the connection, the dowels g absorb moisture in the narrow board 1 and expand to be firmly connected.

In addition, the thin boards mentioned above dry and shrink after being nailed as roofing boards, floorboards, or lath boards, and the joint surfaces are both sawn, which creates gaps, so proper ventilation is required. It is possible to ensure sex.

Furthermore, if adhesive is put into the entrance of the hole d and then the dowel g is press-fitted, as the dowel g is pushed in, the adhesive penetrates into the circumferential surface of the hole d, which is fluffed by the drill cutting, so that a strong bond can be achieved.

Next, we will explain the narrow plate connecting means which has the same effect as a dowel. In the example shown in Fig. 2, holes i, i are drilled in the portions of the narrow narrow plates a, which face each other in close proximity to the joint surfaces of the narrow plates a, a. At the same time, a part of the hole is scraped off to make it communicate as shown in (a), and such communication holes are provided at 4 to 6 locations along the joint, and a gourd-shaped piece slightly larger than the above communication hole is inserted into the communication hole. These are each typed and connected.

In the example shown in Fig. 3, grooves j, j are formed using a router or the like on the upper surfaces of the narrow narrow plates a, which are close to the joint and face each other, and adhesive is put into several grooves j, j. Then dowel g
This is what was typed in and connected.

In the example shown in FIG. 4, grooves m, m perpendicular to the fiber direction are cut at multiple locations at the joint of narrow narrow plates a, a, and
The opposing grooves m and m are connected by driving plastic acid corrugated plates n and -.

The example shown in Fig. 5 is a connecting device in which a plurality of semi-elliptical notches 0.0 are provided on both the upper and lower surfaces of the connecting portion, and the central portions of a pair of upper and lower elliptical plates p, p are connected to form an H-shaped cross section. q, push the connection Aq, q into the notch 0°0 of one narrow plate a, and insert the notch 0.0 of the next narrow plate a into the elliptical plate p of the connector q.
, p, and are connected together by pressing between them, and in this case as well, an adhesive is used as necessary.

Next, the apparatus for manufacturing the narrow plate will be explained with reference to FIG.

(a) Edge cutting supply device The narrow plate l supplied from the supply port 2 has two protrusions 3.
One protrusion of the pair of left and right feeding chees 74 having 3.
A circular saw 5a driven by a motor M, which is engaged with and transferred to the narrow plate 3 and is at a fixed position between them, and a circular saw 5b driven by a motor M2 that can be adjusted forward and backward in the length direction of the narrow plate 1. A protrusion 3 that is sawn to a certain length and locks the narrow board 1
When the motor presses the limit switch S, the clutch 6 that cuts off the power of the other motor M3 is disengaged, the feed check 74 stops, and the other protrusion 3 waits at the supply port 2.

(b) Drilling device Five drill holders 7 are supported by left and right support shafts at the lower end of the conveyor cheno rods 4 and 4 and on the lower side thereof, and are slid back and forth by cylinders 9a and 9b. There are sliding stands 10a and 10b that are fixed to the upper ends of the pair of left and right lifting shafts 11 and 11, and protrusions that protrude toward both sides of each drill 23 are located at the lower part between those 10a and 10b. The lifting shaft 11.11 is raised and lowered by rotating a rack 13 carved in the lower part and a pinion 14 meshing with the rack 14 by a cylinder 15. The hexagonal shaft stopper 17 attached to the lifting shaft 11 comes into contact with the bolt 16 attached to the machine frame and can be adjusted according to the plate thickness, and the entrance surface of the stopper 17 has a different distance from the center. , the upper limit of the rise can also be adjusted by rotationally adjusting this. Also, is the lower limit of descent 1? It can be adjusted by inserting and removing a.

Then, when the narrow board 1 is placed on the pedestal 12 and the limit switch Sl is turned on to stop the conveyor chain 4, the cylinders 18 and 18 are actuated to push the narrow board 1 toward the upper side. The side edge of the holder is stopped by the stopper of the pedestal 12, so that the front and rear positioning is done, and at the same time, the cylinder provided on one side is also operated to move the narrow plate l.
Since one end is pushed, the other end is received by the stopper and positioned horizontally, and at the same time, multiple cylinders 22, etc. are lowered from above and pushed, so even if there is twisting, the narrow plate l can be held. Set it in a certain position.

When the limit switch S2 detects that such positioning is completed, the cylinder 88 on the lower side is activated and rapidly pushes out the slide table 10a, which is supported by the slide table so that it can move forward and backward, and is urged to push out. The detection rod is a narrow plate.
When it comes into contact with the side edge of and is pushed in, the limit switch S
3 is turned on, and at this time, the cylinder 8b is activated, and the cylinder 88 pushes out the slide tables 10a and 10b at the same slow speed as the cylinder 8b, and each drill 23... is all driven by the motor 24, 24 via the belt. Since it is rotationally driven, five dowel holes are drilled in each of the front and rear surfaces of the narrow plate l, and the limit switch S4
When the sensing rod comes into contact with and turns on, the slide tables 10a, 1
0b is retracted by cylinders 8a and 9b, and slide table 1
0a rapidly retreats when the limit switch is turned OFF.

Also, if limit switch S4 is turned OFF while reversing,
That is, when the drill 23φ drills a hole to a predetermined depth and comes out of the hole, the cylinders 18, 22, etc. that have been set in one position move back, the cylinder 15 operates, the pedestal 12 rises to the doweling device, and the limit switch is activated. Turn on.

(C) Dowel Driving Device When the limit switch S5 detects the rise of the narrow plate 1, the water injection arm 2B is tilted rearward (upper side) by the cylinder 27'' to instantaneously inject water into the dowel holes.

On the other hand, when the limit switch S5 is turned on, the cylinder 22 is moved downward to press the narrow plate 1 against the pedestal 12,
Water is injected into the dowel holes at high pressure from a rod 28 which is made of a tubular body and has a small hole at its tip. Five dowels 28, which are moved back and forth by cylinders 28, drive dowels 27 into each hole on the rear surface of the narrow board 1. However, since these driving rods 28 are supported by guide shafts 30, 30 and attached to a frame 31 that moves in parallel, they operate simultaneously.

When the limit switch S6 detects the completion of the driving work of the driving rod 28, the solenoid valve of the cylinder 28 is de-energized and stops, and the feeding arm 32, which has a bent portion at the tip, is activated by the detection of the limit switch S6. · locks the narrow plate l and is sent in by starting the cylinder 33, and in the process turns on the limit switch S7, which causes the plurality of cylinders 34 to descend and release the narrow plates that have already been connected. When the first receiver was pressed, the feed arm 32 further operated to feed in that state, and the dowel protruding rearward from the rearmost narrow plate of the connected narrow plates 1 was fed. It is pushed into the rad hole on the front side of the narrow board 1 and connected.

When the limit switch S8 detects the completion of this pushing, the cylinder 33 pushes back the feeding arm 32, and the cylinder ladder 34 rises.

When the limit switch S7 is turned on, the clutch 6 of the end cutting device is engaged and the next narrow plate 1 is fed.

Further, the above-mentioned water injection step may be omitted as appropriate for a narrow board with a high water content, and if it is performed on a narrow board with a low water content, the dowels will expand and the bonding force will increase.

(d) Dowel supply device The dowel supply device consists of a motor 35 and a crank arm 38a.
and a dowel container 39 that swings up and down about the shaft 37 by a rod 38b and has a plurality of parallel grooves 38 on the bottom plate, and a cylinder 40 that receives the tip of the dowel 27.
It consists of a presser rod 43 that presses down the next dowel 27 with a tightening rod 42, and a nozzle 44 that pumps out the dowel 27 with air, and the dowel container 3θ is configured to remove the dowels 27 that have accumulated while the dowel container 3θ is rocking. are aligned in each groove 38 in a fixed direction, and when the limit switch S5 is turned on, the stop rod 41 rises, and at the same time the presser rod 43 descends to hold the next dowel 27, and the valve opens and air flows into the nozzle. 44, each dowel 27 passes through each hose 45 and is supplied to the doweling device.

(e) Standard length cutting device The narrow plates L connected in a strip shape as described above are sequentially advanced while being pressed by a pair of left and right guide rails 47, 47 which are pressed by a spring 46, and the ends thereof are When the limit switch S9 attached to the stopper 54 of the fixed length plate accumulating device (to be described later) detects this, the plurality of cylinders 34, . . .
Simultaneously, the lift cylinder 48 is activated to lower the other end of the base plate 50, one end of which is pivotally supported by the support shaft 49, and the circular saw 5 waiting on one side of the movement path of the narrow plate l.
1 motor 52 is started, and then the travel motor 53 is started.
is started, the holding frame A on which the circular saw 51 and its motor 52 are hung is attached to the roll 58 on the rail 55 made of an H-shaped net.
The sprocket 57, guided by When the grinding is finished and the limit switch SIO provided on the other side is turned on, the lift cylinder 48 raises the underframe 50 and the motor 52
is stopped, the cylinders 34 .

(f) Standard length plate stacking device This device is supported to rotate up and down and left and right around the starting end, and is composed of a pair of left and right discharge frames E12.82 equipped with a large number of rollers 58... has been
Normally, when viewed from the side, it is pushed up by the cylinder 60 to become almost horizontal and pushed out by the cylinder 61, and receives the belt-shaped plate sent out in this state, but the limit switch SIO indicates when the circular saw 51 has finished cutting. When detected, the cylinder 60 tilts the discharge frame 82.82 downward, and the cylinders θ1 and 81 move backward, so that the length plate 63 moves to the pair of left and right cradle 84. It is deposited sequentially on e4-hi and carried out in appropriate amounts.

As described above, the present invention involves drilling a large number of holes on both sides of a plurality of narrow plates whose surfaces and side surfaces are sawn, aligning the narrow plates in parallel, and doweling each of the opposing holes. Since the narrow boards are connected by press-fitting, there is no need to finish the sides with a planer when narrowing the width of the narrow boards, and the width can be reduced at low cost. Although there are some cases where some ears remain,
These defects can be easily and reliably connected without causing any obstacles.

Furthermore, narrow boards can be used as roof boards, floorboards, or lath boards with the same ease as plywood boards, and after use, they dry and create gaps at the joints, ensuring appropriate ventilation for housing. can.

Furthermore, in the method of applying adhesive to the side of the narrow board and then press-fitting dowels to narrow the width, it is possible to bond firmly regardless of the moisture content of the narrow board, and the adhesive is used. However, since the narrow plates are joined together by dowels, there is no need for a curing period for the adhesive to harden, which is required in the conventional method of cutting and gluing the sides of the narrow plates, making it easy to assemble. It is possible to narrow the width with extremely high efficiency.

[Brief Description of the Drawings] The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view of a narrow board, and Fig. 2 (a) is a diagram of a board whose width is widened using a piece. A plan view of the main part, (b) is a sectional view taken along line A-A as above, (C)
3(a) is a perspective view showing another example of the width side, FIG. 3(b) is a plan view showing a groove for driving a dowel,
(c) is the same as above, a cross-sectional view of the connecting part, FIG.
Figure 5 is a front view of a part of the narrow plate cut out to use another connector, (b) is a plan view of the same as above, (C) is an enlarged view showing the notch, and (d) is a side view of the connector. , (e) is a plan view of the same, (f) is a plan view of the board width-side connected by the same connector, and FIG. 6 is a side view showing an example of a manufacturing apparatus for a narrow board. a...Narrow board dφ/hole g...Dowel Patent applicant Fuji Kogyo Co., Ltd. (1 other person) No. 11! I yrM tρ,) 29- Fig. 1, fll

Claims (2)

[Claims] (1) Drill a large number of holes on both sides of a plurality of narrow boards whose surfaces and sides are sawn, arrange the narrow boards in parallel, and press dowels into each of the opposing holes. A rectangular board characterized by being connected. (2) Drill a large number of holes in the side surfaces of a plurality of narrow boards whose surfaces and sides have sawn edges, leaving the sawn edges in place, fill the holes with adhesive, and then open the opposing holes. A method for manufacturing a rectangular board, characterized in that narrow boards are joined and connected in parallel by press-fitting dowels into the board.