JP3404089B2 - Method and apparatus for treating excess adhesive in wood joints - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for treating an end portion of one piece of wood by connecting an end portion of another piece of wood with an adhesive so as not to adhere to the other adhesive. Regarding

[0002]

2. Description of the Related Art FIGS. 9 to 11 show various kinds of wood joints. FIG. 9 is a butt seam in which an adhesive is applied to the wood mouth 2 of the wood 1 and butt-pressed, and FIG. A scarf seam in which a wood mouth is cut diagonally and an adhesive is applied to the slope 4 for joining, and FIG. 11 shows a case where a plurality of cuts are made in the wood mouth to form a plurality of fingers 6, and an adhesive is applied to the fingers 6. Is a finger seam for applying, engaging and pressing.

In any of the above seams, if the amount of the adhesive is small, the adhesive will not spread to the joint surface, resulting in incomplete adhesion. Therefore, when pressure is applied to the joint surface, excess adhesive a
It is necessary to apply the adhesive to the extent that it sticks out.

[0004]

As described above, when the surplus adhesive is squeezed out from the seam of the wood, it is adjoined while the wood after the adhesion is piled up and conveyed to the next step. There is a risk that the wood will adhere due to the excess adhesive, and it will take a great deal of work to separate this wood for the next step and damage the wood surface.

The object of the present invention is to solve the above-mentioned problems of the conventional wood seams, and to promptly treat the surplus adhesive protruding from the joining so as not to hinder the subsequent steps. A method and apparatus are provided.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention proposes a method in which end portions are pressure-welded to each other via an adhesive.
Wood is pressure-bonded in the middle of the wood moving path to send the worn wood
When scraping, scrape off excess adhesive that sticks out of the joint.
Arrange the steps, and while feeding the wood in the above-mentioned transport path,
A structure that scrapes off the excess adhesive that has squeezed out by a scraping means.
Is adopted. Also, the ends should be glued together.
And move the wood that has been pressure-bonded to the middle of the wood moving path.
Rotate by touching the wood to
Scraping means for scraping off the surplus adhesive protruding from the joint
Can be arranged.

[0007] Further, in the middle of a wood moving path for feeding wood whose ends are pressure-bonded to each other via an adhesive, the wood is sandwiched between the upper and lower parts, and the side corresponding to the wood runs in the same direction as the endless wood. A belt is arranged, and a large number of heating members are attached to this endless belt to heat the surplus adhesive that comes in contact with the surface of the wood and sticks out of the joint, so that the surplus adhesive does not adhere to other parts. Can have a different structure
Wear. Furthermore, the wood is sandwiched in the middle of a wood moving path for sending the wood whose ends are pressure-bonded to each other through an adhesive, and the wood is contacted with the moving wood to rotate in the wood feeding direction. It is possible to employ a structure in which a heating roller is arranged to heat the excess adhesive protruding from the joint to prevent the excess adhesive from adhering to another.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 3 and 4, for example, a wooden piece 5 provided with fingers 6 on its ends is placed on a pedestal 12 of a wood joining machine 11, and a pedestal 12 is held by a holding frame 14 which is vertically moved by a hydraulic cylinder 13.
Hold down.

The next wood 5 is fed from the right side of FIG. 3, but since the finger 6 at the tip of the wood 5 is coated with the adhesive 7 as shown in FIG. When is engaged with the finger 6 at the rear end of the wooden piece 5 on the pedestal 12 and is pressurized, it is joined as shown in FIG.
Excessive adhesive 7 protrudes from the periphery of this joint as shown in FIG.

FIG. 1 and FIG. 2 show an example of the adhesive processing device 20 that protrudes as described above, and is provided in the vicinity of the wood joining machine 11 as shown in the drawings. This processing device 20 has upper and lower scraping rollers 19 such as a brush roller rotating in the direction of the arrow in FIG. 1 or a roller having a plurality of scraping blades at its inlet.

A heating means 22 in which a heating roller 21 as a heating member is arranged vertically is provided in front of the heating means, and wood 5 is passed between the heating means 22. A drive means 24 having a plurality of drive rollers 23 arranged vertically is provided at the inlet and the outlet of the heating means 22, and the bonded wood 5 is moved in the arrow direction by driving each roller 21 in the arrow direction. .

Further, the above-mentioned front and rear drive means 24
A plurality of guide rollers 25 are provided in front of and behind, and when the glued wood 5 is placed on the guide roller 25 and sent to the driving means 24, the surplus adhesive at the joint portion of the wood 5 sent to the heating means 22 by the driving roller 23. Is scraped off by the heating roller 21 and dried by heating.

Therefore, even if the treated timbers 5 that have been processed by the treating apparatus 20 are stacked, there is no possibility that adjacent timbers will adhere to each other.

The heating roller 21 may be of any type such as one that uses an electric heater and one that circulates and heats heating oil or steam. Further, since the adhesive adheres to the outer circumferences of the guide roller 25 and the heating roller 21 on the inlet side, the scraping knife 26 is brought into contact with the peripheral surface of the guide roller 25 and the heating roller 21 to scrape the adhered adhesive.

In FIG. 6, the upper and lower endless belts 31 are supported by pulleys 32 at both ends and run in the direction of the arrow, and a large number of heaters 33 utilizing electric heat or the like are arranged at regular intervals on each endless belt. Although the bonded timber 5 is passed between the woods 33 to heat and dry it, the heater 33 may or may not contact the wood 5.

Also in this case, a heating roller or the like may be provided at the entrance of the heating means 22.

In FIG. 7, infrared lamps 34 are arranged above and below the heating means 22, and the wood 5 passing between them is heated and dried to treat the excess adhesive. Also in this case, a heating roller or the like may be provided at the entrance of the heating means 22 as in the case of FIG.

In the apparatus shown in FIG. 8, high frequency or microwave electrodes 35 are arranged above and below the heating means 22, and the heating roller 21 is provided at the inlet and the outlet of the heating means 22. The heating by the heating roller 21 and the scraping action are performed. And high frequency electromagnetic field energy by high frequency or microwave.

In each of the above embodiments, scraping and heating are used together or only heating is used. However, heating is not used together and only the scraping roller 19 shown in FIG. 1 is used. In some cases. In addition, although the embodiment describes the finger joint, it is needless to say that it can be used for a butt joint and a scarf joint.

[0020]

[Effect] The present invention scrapes off excess adhesive that has run off from the seam as described above, or heats it to prevent it from adhering to other adhesives. There is no risk of sticking to wood.

Therefore, when entering the next step, the stacked wood can be sent out smoothly.

[Brief description of drawings]

FIG. 1 is a side view of the first embodiment.

FIG. 2 is a plan view of the above.

FIG. 3 is a side view showing an example of a wood joining machine.

FIG. 4 is a perspective view of a timber connection state.

[Fig. 5] Enlarged cross-sectional view of a wood joint

FIG. 6 is a side view of the second embodiment.

FIG. 7 is a side view of the third embodiment.

FIG. 8 is a side view of the fourth embodiment.

FIG. 9 is a perspective view of a butt joint.

FIG. 10 is a perspective view of a scarf seam.

FIG. 11 is a perspective view of a finger seam.

[Explanation of symbols]

5 wood 6 fingers 7 adhesive 11 wood joining machine 19 scraping roller 20 processing equipment 22 Heating means 24 Driving means 31 endless belt 33 heater 34 infrared lamp 35 electrodes

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tsuneo Nagata 1901, Baiji, Koryo-cho, Kitakatsuragi-gun, Nara (72) Inventor Itsuo Mutsuki 1-7-12 Hibarigaoka, Takarazuka-shi, Hyogo (56) References 2-231106 (JP, A) JP 59-209804 (JP, A) JP 60-38105 (JP, A) JP 57-84805 (JP, A) JP 57-105301 (JP, A) Actual development Sho 61-50406 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B27M 1/00-1/08 B27D 1/10

Claims (4)

(57) [Claims] 1. A scraping means for scraping off the excess adhesive that has run off from the joint portion when the wood is pressure-bonded is arranged in the middle of a wood moving path for feeding the wood whose ends are pressure-bonded to each other via an adhesive. Then, the surplus adhesive that has run off from the joint is scraped off by a scraping means while feeding the wood through the above-mentioned transport path. 2. A wood moving path for feeding wood whose ends are pressure-bonded to each other through an adhesive, rotates while contacting the moving wood, and sticks out from the joint when the wood is pressure-bonded. A surplus adhesive treatment device for wood joints, which is provided with a scraping means for scraping off the surplus adhesive. 3. An endless machine, which is arranged vertically in the middle of a wood moving path for feeding wood whose ends are pressure-bonded to each other via an adhesive, and the side corresponding to the wood runs in the same direction as the wood. A belt is arranged, and a large number of heating members are attached to this endless belt to heat the surplus adhesive that comes in contact with the surface of the wood and sticks out of the joint, so that the surplus adhesive does not adhere to other parts. A surplus adhesive treatment device for wood joints. 4. A wood moving path for feeding wood whose ends are pressure-bonded to each other via an adhesive is vertically arranged with the wood sandwiched therebetween, and contacts the moving wood to rotate in the wood feeding direction. By doing so, a heating roller for arranging a heating roller for heating the surplus adhesive protruding from the joint to prevent the surplus adhesive from adhering to other parts is disposed.