JPH01114401A - Production unit for flitch - Google Patents

Abstract

PURPOSE: To dispense with pressure-lamination processing by giving adhesive force to some extent through polymerization of veneer solid boards for medium plate painted with thermo-setting resin adhesives on their upper and lower faces with adhesive painting unit in the direction normal to the end line of vertical transport conveyer. CONSTITUTION: Veneer solid boards 5 and 10 for front and rear boards, respectively, fed to each vertical transport conveyer 4 are attitude-controlled and carried forward at the same speed in near synchronism, and when they come to adhesive ejection unit 14 on the way of transport, thermosetting resin adhesives ejected by a fixed amount through its jet nozzle 15 is painted in dots or belts with an arbitrary interval. On the other hand, veneer solid board 18 for medium plate is painted with adhesive of thermosetting resin on its upper and lower faces with the adhesive painting unit 17, inserted between veneer solid boards 5 and 6 at the polymerizing position 16, and then compressed to create prescribed adhesive strength.

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a veneer veneer coated with a thermosetting resin adhesive and a veneer veneer coated with a thermoplastic resin adhesive sprayed in dots or strips. The present invention relates to a plywood manufacturing device that quickly temporarily fixes plywood materials made of plywood and shortens the process of supplying it to a multi-stage ho...I door brace.

``Conventional technology'' Conventionally, in the plywood manufacturing process, thermosetting resin adhesive is applied to the top and bottom of a veneer veneer that serves as the middle board, and then the el! A plywood material is obtained by overlapping veneer veneers with fibers orthogonal to each other, and this plywood material is used to form a vertical type with multiple heating plates arranged vertically, or a heating plate with multiple roles in the horizontal direction. Horizontal multi-stage ho...I
Plywood products were obtained by supplying it between the various heating plates of Dobres and heating and pressurizing it.

Normally, when supplying this plywood material to between the heating plates of each stage of a multi-stage hot press, processes such as inserting it into the loader shelf and transferring it from the loader shelf to each stage of heating plates are essential, so the plywood material is If the veneer veneers do not have a certain level of adhesive strength, problems such as misalignment and peeling of the veneer veneers will occur during each process. In particular, when supplying plywood material to a horizontal multi-stage hot press with a vertical heating plate, compared to a vertical multi-stage hot press with a horizontal heating plate, the loading rack The plywood material itself is placed in a substantially vertical state with the hot plates spaced apart, and the inconvenience when transferring the plywood material from between the loader shelves to between the hot plates is doubled.

Therefore, at the time when the plywood materials are constructed, tens to hundreds of sets of plywood materials are inserted between the surface plates of a cold press and pressurized as they are at room temperature for several tens of minutes to several hours, or The pressurized state is maintained by a turnbuckle, and a temporary adhesive strength is created that does not cause the above-mentioned problems while the plywood material is inserted and transferred to each stage of the hot plate of the multi-stage hot press. 9 ``Problems to be Solved by the Invention'' However, according to this conventional method, the plywood material is coated with a thermosetting resin adhesive side until it is heated and pressurized by the ridges, multi-tiered wood, etc. When the number of sheets reached an arbitrary number of sheets, it was necessary to pressurize and deposit them for a certain period of time, making the work form discontinuous and making the entire work process inefficient.

"Means for Solving the Problems" In view of stacking problems, the present invention provides an adhesive spraying device that has a plurality of spray nozzles and sprays hot melted thermoplastic resin. The veneer veneer and the veneer veneer for the back plate are arranged between each conveyance path of a pair of upright conveyors that convey the veneer veneer almost upright, and in the direction perpendicular to the end of this upright conveyor, there is a A device transports the middle veneer veneer, whose upper and lower surfaces are coated with thermosetting resin adhesive, between the top veneer veneer and back veneer veneer, which are supported almost upright. A polymerization apparatus is provided, in which a conveyor is disposed, a conveyance body for placing a veneer veneer for an intermediate plate below the terminal end, and a moving body disposed on at least one side perpendicular to the conveyance direction. Furthermore, a clamping mechanism is installed in the transport direction to temporarily fasten each veneer veneer that has been joined together to generate a certain degree of adhesive force between each veneer veneer, and the above-mentioned thermosetting tM@contact is applied. This eliminates the disadvantage of having to pressurize the autopsy at room temperature for a certain period of time.

``Embodiment'' Hereinafter, an embodiment of the present invention will be described based on the attached drawings 1 and 1. However, a pair of upright transport conveyors 4, each consisting of a plurality of vertically suspended conveyors 4, are arranged at arbitrary intervals so that their transport surfaces face each other.
An elevating device 6 for stacking a plurality of veneer veneers 5 for the top panel among the materials constituting plywood is installed adjacent to the base end of one of the upright conveyors 4. This elevation 'jA position 6
A swing shaft 8 with a needle-like protrusion, a suction bar, an I-door, etc. attached to the tip is supported by the machine frame, and this swing shaft 8 is connected to the upper surface of the plywood board 5 at the top of the class. A feeding mechanism 9 is installed which can move up and down freely relative to the upright conveyor 4 and can reciprocate up to the base end conveying surface of the upright conveyor 4.

Further, at the base end of the other upright conveyor 4, an elevating device 6 for depositing the veneer veneer 10 for the back plate is provided, and
A feeding mechanism 9 similar to that described above is installed.

At the base end portion of the upright conveyor 4, as shown in FIGS. 3 and 4, a belt 11 constituting the upright conveyor 4 or a belt 12 with a claw 1-inch set at a faster speed than a chain, etc. An alignment mechanism 13 is installed to suspend the attached chino and track the rear ends of the unwound veneer veneers 5 and 10 to align their positions, or an upright conveyor 4 is configured, although not shown. An alignment mechanism 13 is disposed that corrects the vertical and longitudinal positions of the unrolled plywood boards 5 and 10 by means of a suction device that can freely appear and retract from the upright conveyance surface from between a belt or a chino, etc. There is.

An adhesive spraying device 14 for spraying heated and molten thermoplastic resin adhesive is arranged on the surfaces of the pair of upright conveyors 4 where the conveyance paths face each other. A plurality of injection nozzles 15 are installed at arbitrary intervals in the vertical direction of the veneer veneer 5 for the front plate and the veneer 10 for the back plate.

ing.

A polymerizing device 16 for plates 5.10 is disposed in each veneer near the end of the pair of upright conveyors 4, and an adhesive applicator 17 is installed at a position extending in one direction perpendicular to the polymerizing device 16. The middle board veneer war W, 18f, which has been installed and has thermosetting resin adhesive applied to its top and bottom surfaces! A take-out conveyor 19 is disposed between the veneer veneer plate 5 for the front plate and the veneer spout plate 10 for the back plate, which are supported in an almost upright manner.

As shown in detail in FIG. 5, this polymerization device 16 has a conveyor 20 such as a roller conveyor or roller conveyor that supports the veneer veneer 18 for the middle plate at its lower end, and an upright conveyor 4. The actuating body 21 whose recess is the retracted position is movable back and forth by a pressing device 22 such as a screw or fluid pressure disposed in one direction perpendicular to the conveyance direction, and the surface plate 2 is moved in the other direction.
It is constructed by arranging 3.

Incidentally, as shown in FIG. 6, a structure may be adopted in which a suction force is applied to the actuating body 21 to suction and hold the veneer veneer plates 5.10 for the top and back plates during operation.

Furthermore, the surface plate 23 disposed in the other direction may have the same configuration as the ft'' moving body 21.Furthermore, one
A pressing mechanism 24 consisting of a pair of large-diameter drum pulleys, a caterpillar press, a movable surface plate, etc., is arranged in the conveying direction to temporarily hold each of the stacked veneer veneers 5, 10.18.

Next, the effect will be explained.

First, among the materials constituting the plywood, a veneer veneer 5 for the front panel and a veneer QL[10 for the back panel] were deposited on each lifting device 6. One sheet is fed from the top of the pile to the conveying surface of each upright conveyor 4 by hand or by a known feeding mechanism 9. According to the illustrated example, by lowering the machine frame from the standby position, each of the uppermost veneer veneers 5, 10 is From, - while sticking or sucking @holding,
The swing shaft 8 is rotated approximately 90 degrees, and the suction belt, pricking belt, or claw is fed to the chain F.2. Each veneer veneer is fed onto each upright conveyor 45.
11) are aligned on the conveyance path by an alignment mechanism 13, but in the case illustrated in FIGS. A fast-set claw belt 12 tracks the rear end of each unreeled veneer veneer 5.10 and corrects its position.9 On the conveyance path surface of each upright conveyor 4, Each of the veneer veneers 5° and 10 for the board and the back board are transported forward at the same speed almost synchronously, and when they reach the adhesive spraying device 14 during transport, they are stopped or decelerated, and the spraying is performed. A fixed amount of thermoplastic resin adhesive is sprayed from the nozzle 15 and is applied in dots or bands at arbitrary intervals.

The veneer veneers 5.10 for the front and back panels, on which thermoplastic resin adhesive is applied in dots or strips on opposite sides, are conveyed in an upright state to the polymerization device 16, and the front end thereof is When the part is detected by a phototube, limit switch, etc., it is stopped.

Meanwhile, at the same time, the intermediate veneer veneer 18 is coated with a thermosetting resin adhesive on its upper and lower surfaces by the adhesive applicator 17, and transferred from a horizontal state to an almost upright state via a take-out conveyor 19. While being conveyed and converted to the polymerization position 1
It is inserted between the veneer veneers 5.10 for the front plate and the back plate which face each other and are in a stopped state at 6, and its lower end is supported by the conveyor 20.

Next, the actuating body 21 that had been retracted in the recess of one of the upright conveyors 4 is pushed out by the action of the pressing device 22.
Adsorption and holding of 5°10 veneer veneer for front or back board,
Or release the attachment hold.

At this time, the fiber direction of the veneer veneer 5.10 for the top plate or the back plate is parallel to the conveyance direction, and it is easy to bend when releasing the sheet, and this tendency becomes more pronounced especially if the thickness is thin. It is preferable that a suction mechanism is attached to the actuating body 21 so that the actuating body 21 is pushed against the surface plate 23 while being held by suction, and is integrally polymerized. In addition, when the actuating body 21 is disposed not only in one direction but in both directions instead of the surface plate 23, the veneer veneer 5 for the top plate and the veneer tonne plate 10 for the back plate are replaced by the middle plate, respectively. Therefore, the veneer veneer 18 for the intermediate plate is substantially transported toward the conveyor 20.
He was placed in a state of static deafness.

Each veneer veneer 5, 10.18 ha, integrally polymerized,
By being conveyed to the clamping mechanism 24 and further clamped, adhesive strength is generated in the thermoplastic resin adhesive portion applied in dots or bands between each veneer veneer 5, 10.18. .

"Effects" As described above, according to the present invention, an adhesive spraying device having several spray nozzles and spraying a heated molten thermoplastic resin adhesive is used to connect a veneer veneer for a front panel and a back panel. A pair of upright conveyors that transport veneer veneers for boards in an almost upright manner are installed between each conveyance path, and in a direction perpendicular to the end of the upright conveyors, an adhesive applicator is used to coat the upper and lower surfaces of the upright conveyors. A veneer veneer for the middle plate coated with thermosetting resin @ adhesive,
A take-out conveyor is installed between the top plywood board and the back plywood board, which are supported almost upright.
In addition, a polymerization device is configured in which a transport body for placing a veneer veneer for an intermediate plate below the terminal end, and a tr-moving body disposed on at least one side perpendicular to the transport direction, and each A clamping mechanism that temporarily holds the veneer veneers together is installed in the transport direction, and a certain amount of adhesive force is temporarily generated between each veneer spout plate, so thermosetting resin adhesive is not applied as in the Shorai method. There is no need to stack the sheets under pressure for a certain amount of time each time the number of sheets reaches an arbitrary lot until they are heated and pressed by a multi-stage hot press, which simplifies the work and allows for continuous production in one job. This is something that can be expected.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing an embodiment of the present invention, Fig. 2 is a view taken along the line A-A in Fig. 1, Figs. The figure is an explanatory diagram of the operation of the overlapping position, and FIG. 6 is an explanatory diagram of the operation of the overlapping position according to another embodiment. 4... Vertical conveyor, 5... Single plywood for top plate, 9... Feeding 1 mechanism, 13... Aligning mechanism, 14...
... Adhesive injection device, 16... Polymerization device, 17... Adhesive 1iFII coating device. 18...Plywood veneer for middle plate, 19...Take-out conveyor, 20...Transportation body, 21...Operation body, 24...
- Clamping mechanism. Patent applicant: Ohira Seisakusho Co., Ltd.

Claims (1)

[Claims] A pair of adhesive spraying devices that have multiple spray nozzles and spray heat-molten thermoplastic resin adhesive are used to transport the veneer veneer for the front panel and the veneer veneer for the back panel in an almost upright shape. Intermediate plywood sheets are installed between each conveyance path of the upright conveyor, and in the direction orthogonal to the end of the upright conveyor, the upper and lower surfaces of the upright conveyor are coated with thermosetting resin adhesive using an adhesive coating device. A take-out conveyor is installed to transport the veneer between the veneer veneer for the top plate and the veneer veneer for the back plate, which are supported in an almost upright manner. A polymerization device is constructed by arranging a transport body on which the polymer is placed, and an actuating body disposed on at least one side perpendicular to the transport direction,
A plywood manufacturing device further comprising a clamping mechanism installed in the conveying direction to temporarily secure each polymerized veneer veneer.