JPS58116103A - Ripping device for veneer - 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 The present invention relates to a veneer veneer [hereinafter referred to as an intermediate board]. ] relates to a vertical combing device.

For medium boards whose fiber direction is short (hereinafter referred to as veneers), such as medium boards that are cut from logs until they reach a perfect circle, or veneers that are cut from logs that have short lengths in the fiber direction, The uneven parts of the front and rear edges in the fiber direction are removed by cutting, and the #
After forming a scarf cut consisting of an appropriate number of scarf cut lengths of the veneer thickness on the i and t4 parts, each veneer is scarf jointed in the direction of the fibers to form a long vertically serrated veneer. We are working to improve the log yield.

Conventionally, in the above-mentioned type of vertical graining device, a cutting blade is conveyed in the direction of the fibers of the veneer based on detection signals from a number of thickness detectors arranged at predetermined intervals in the direction perpendicular to the fibers of the veneer. The front tI & edge saw is operated in an inclined manner corresponding to the desired scarf cut length, and the uneven parts of the front and rear edges are removed by cutting, and the rear end side of the veneer with the desired scarf cut is lifted using a lifting member. Move the scarf upward with the adhesive application roll and apply the adhesive to the scarf cut surface, and then apply the adhesive to the front of the following veneer! After waiting until a scarf cut is formed on the edge, the lifting member is returned to its original position, the respective scarf cut surfaces are aligned, and the veneers are scarf jointed in the fiber direction. Since the scarf cut is formed and the scarf joint is performed in the illumination process, the veneer spends a lot of time at rest, which has the drawback that high-speed processing of the scarf joint cannot be achieved.

In view of the above-mentioned drawbacks of the conventional art, the object of the present invention is to provide a veneer vertical pongee machine that can continuously carry in veneers with scarf cuts formed thereon and serialize the vertical pongeeing process of the middle plate phase W. Our goal is to provide the following.

Hereinafter, the present invention will be explained in detail according to examples.

Fig. 1 is an IF plane view showing an outline of the vertical ratcheting device according to the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is an explanation showing the fixing position of the rear end of the veneer by the joining roll. In the figure, the main conveyance roll l is rotatably driven by the main body frame 2.
The support, which is pivotably supported and swingably attached to the main body frame 2 via an arm 3 and is biased in the direction shown in the figure by an elastic member 4, has a single plate thickness at the rear end in the fiber direction by a roll 5. Single plate S1 formed with scars 1 to 10 times the size.
S2 is pinched and conveyed in the MAII# direction.

The main transport roll 1 is equipped with a transport amount detector 6 such as a transducer that detects the transport amount by outputting a predetermined number of detection signals corresponding to the transport amount of the veneers S1 and S2.

The presser roll 7 is rotatably supported on the main body frame 2 on the hand side in the conveying direction by the main conveying roll 1.
A support roll 10, which is swingably attached via an arm 8 and is urged upward in the drawing by an elastic member 9, pinches the veneers S1 and S2 being conveyed, and the middle plate S1 during conveyance.・Restricts the deflection of S2.

The adhesive application roll 11 is supplied from an adhesive tank (not shown) and coated with adhesive 12 (indicated by broken lines in the figure) attached to its outer circumferential surface, and is formed on the front end as the veneer 5l-52 is conveyed. After applying the adhesive to the surface of the scarf cut 53 and changing the middle plate detector 13, which is disposed on the upper side of the adhesive application roll 11 in the conveyance direction and detects the half plates s1 and s2, to the single plate detection state, the conveyance amount is determined. When the number of signals output from the detector 6 reaches a predetermined number corresponding to the transport amount JIIIJLI from the intermediate plate detector 13 to the adhesive application roll 11, an elevating member such as an air cylinder fixed to the main body frame 2 14 and moves out of the conveyance path, and after the intermediate plate detector 13 changes to the state of not detecting veneers, the number of signals output from the conveyance amount detector 6 reaches the predetermined number. When it reaches the point, it is moved F by the elevating member 14 and returns to its original position.

Generally, a thermoplastic adhesive such as a hot-melt adhesive is suitable for the adhesive 12 in order to shorten its curing time, but the present invention is not limited to this adhesive at all.

The joining roll 15 is rotatably driven to be stopped by braking via a clutch/brake mechanism (not shown) on the downstream side of the adhesive application roll 11 in the conveying direction.
A welding roll 1 is pivotally supported by the main body frame 2 via an arm 16 in a downward position, and has the ability to be pressurized upward in the drawing by an operating member 17 such as an air cylinder.
8, the base end a of the scarf cut sb of the rear width part of the veneer Sl is moved upward or downward in the conveying direction from the axis of the pair of joining rolls 15.
The scarf cut Sa at the rear end of the veneer S2 is applied with the adhesive 12, which follows the scarf cut sb which is fixed and pressed so that it is located within the double range.
The veneers S1 and S2 are scarf jointed by pressing them together.

The carry-out roll 19 is rotatably supported by the main body frame 2 on the downstream side of the joining rolls 15 and 18 in the conveyance direction in synchronization with the joining roll 15, and is supported by the main body frame arm 2.
The fibers are scarf jointed in the fiber direction by the joining roll 15 by the support roll 22, which is pivotably supported through the support roll 22 and urged upward in the drawing by the elastic member 21.
This is to hold the molten veneer 23 under pressure and discharge it out of the apparatus.

Next, the operation will be explained according to FIGS. 4 to 6.

The front end of the veneer S1 is sandwiched between the transport roll 1 and the roll 5, and the front end of the veneer S1, which is transported in the fiber direction, passes through the veneer detector 13 and is further transported, as shown in FIG. An adhesive application roll 11 comes into contact with the cut surface of the scarf cut 5a formed at the front end as it is conveyed, and seeds the adhesive 12 over the entire cut surface.

After the detection signal of the veneer detector 13 is output, the adhesive application roll 11 is delayed by a time corresponding to the transport distance 1111JLI of the veneer S1 from the position of the veneer detector 13 to the adhesive application roll 11. Lifting member 1 operated by
After the adhesive 12 is applied to the cut surface by step 4, the adhesive 12 is moved upward and out of the conveyance path, and the adhesive 12 is applied to the surface of the intermediate plate 51L.
2 adhesion is regulated.

Then, as the veneer S1 is transported in the L direction, the veneer S1 is transferred to a pair of bonding rolls 15 and 18, a transport/output roll 19, and a support roll 22.
After the rear end passes the veneer detector 13 as shown in FIG.
The welding roll 15 is stopped and braked at a delayed timing corresponding to 11JL2, and the actuating member 17 is activated to fix the base end of the rear end portion by the welding roll 15 and the joining roll 18.

In addition, along with the above operation, after the rear end of the adhesive application roll 11 passes the veneer detector 13, the elevating member 14 is operated at a delayed timing for a time corresponding to the transport distance sL1.
, and returns to the original position so that the adhesive 12 can be stored on the scarf cut Sa surface at the end of the following middle plate 5211J.

The subsequent veneer S2 is coated with adhesive 12 on the cut surface of the scarf cut Sa in the front i4 portion by the adhesive application roll 11 in the same manner as described above, and then further conveyed.
As shown in FIG. 6, the scarf cut Sa is made to coincide with the scarf cut sb in the preceding fist plate SlIJItm portion which is pressurized and fixed by a pair of joining rolls 15 and 18, and the respective veneers 51 and 52 are cut in the fiber direction. Make a hescaphe joint.

In addition, when the respective scarf cuts Sa and Sb are joined,
The end portion of the intermediate plate 52...1 that is being conveyed is slightly bent downward due to gravity, but the tip i portion of the intermediate plate 52 is fixed under pressure along the outer peripheral surface of the joining roll 18. It is guided so as to coincide with end a, and is scarf jointed so that the upper and lower surfaces of G4 & S1 and S2 form a substantially continuous plane V.

In addition, when matching the scarf cut Sa that follows with the scarf cut sb that has been fixed under pressure, the scarf cut s
It is desirable that the base (ia) of b (ia) and the axes of the joining rolls 15 and 18 approximately coincide with each other, but as shown in FIG. Even in the case where the scarf cut Sa at the front end of the succeeding veneer 52 is located within a range approximately twice the middle plate thickness t toward the lower side, the tip j11 of the scarf cut Sa at the front end of the following veneer 52 is cut on the outer circumferential surface of the joining roll 18. Since the intermediate plates S1 and S2 are guided to the base HA@m along the direction and pressed together according to the conveying force, the respective intermediate plates S1 and S2 are joined so that their upper and lower surfaces form substantially continuous planes.

After the front tja portion of the intermediate plate S2 passes the veneer detector 13, the welding roll 15 is re-driven at a delayed timing for a time corresponding to the conveying distance I2, and the splicing roll 15 is driven again at a delayed timing for a time corresponding to the conveying distance I2, and the vertical serpentine unit that has been scarf jointed is re-driven. The board 23 is transported to the unloading side.

The veneer S1 to be re-transported by the joining roll 15 is transported from a stopped state and requires a longer time to rise compared to the following veneer S2. It is possible to align and join the respective scarf cuts Ss and Sb without stopping the conveyance of S2.

In addition to the above control method, when the front end of the following veneer 52 is located on the joining roll 15, the rotational drive of the main transport roll 1 is controlled to stop, and the load inertia of the drive member (not shown) is used to control the rotation of the main transport roll 1. After matching the cut surfaces of the scarf cuts Sa and Sb, the main conveying roll 11 and the joining roll 15 are re-driven after an appropriate period of time to carry out the vertically carved veneer 23. .

Further, in this embodiment, the adhesive application roll 11 is
The drive timing of the welding roll 15 as well as the driving/braking timing of the welding roll 15 are determined. However, when implementing the present invention, the welding roll is also equipped with a similar transport compartment detector, and the front iJa portion of the veneer is After passing through the veneer detector, the L movement timing of the adhesive application roll and the driving timing of the joining roll are determined based on the number of signals from the conveyor detector attached to the main conveyor roll. The rear end is #1
After passing through the #Ii detector, the downward movement timing of the adhesive application roll and the braking stop timing of the joining roll are determined based on the number of signals from the carrier acid detector attached to the joining roll. Position accuracy is achieved by the configuration. can be significantly improved.

Therefore, the present invention applies to a veneer veneer in which a scarf cut having a scarf cut length of about 1 to 10 times the veneer thickness is formed in the wA part after the Ml fiber direction 1IfJ, and in the mII & direction of the veneer veneer. An adhesive application roll movable to the scarf cut surface in the i1] t4 part and an adhesive provision roll arranged on the lower side in the conveyance direction without interrupting the conveyance to the mI veneer veneer. After continuing, the veneer on which the scarf cut has been formed is continuously carried in by a pair of joining rolls that sandwich and stop the scarf cut base end of the rear end of the veneer veneer. This is a veneer vertical graining device that speeds up the vertical graining process between medium boards.

[Brief explanation of the drawing]

Fig. 1 is a front view schematically showing the vertical ratcheting device according to the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is an explanatory diagram showing the fixing position of the rear end of the veneer by the joining roll. , FIGS. 4 to 6 are explanatory diagrams showing the operating states, respectively. In the figures, 11 is an adhesive application roll, 15 is a bonding roll, and 18 is an adhesive application roll.
is the other joining roll, Sl and S2 are veneers, Sa and Sb are scarf cuts, a is the base end, and b is the axis position.

Claims (1)

[Claims] 1.1M fiber direction #1 rear end of veneer veneer thickness approximately 1-10
For a veneer veneer formed by forming scarf cuts each having twice the scarf cut length, apply adhesive as appropriate to the scarf cut surface at the #1 bite part without stopping the conveyance of the veneer veneer in the fiber direction. an adhesive seeding roll that can be moved out of the veneer veneer conveyance path after damaging the veneer;
After continuing to transport the veneer veneer, the veneer #li
A veneer medium board vertical pongee machine comprising a pair of joining rolls that clamp and stop the scarf cut base end at the rear end of the board.