JPS61284402A - Movement mechanism method and device in manufacturing process of veneer laminated material - 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 (-r) Industrial Application Field The present invention is a veneer veneer whose front and rear edges have been cut into symmetrical bevels in advance and an adhesive has been applied to one side of the board surface. , LVL (laminated veneer lumber) or LVB (laminated veneer lumber), which overlaps each other and shifts the overlapped parts in a step-like manner to create an intermediate product with a predetermined number of laminated layers. The present invention relates to a moving mechanism method and apparatus used in the manufacturing process of laminated veneer materials commonly known as veneer boards.

(2) Prior art A method and device for assembling this type of laminated veneer material according to the prior art is disclosed, for example, in Japanese Patent No. 982535 (Japanese Patent Publication No. 54-146).
No. 41) "A device that sequentially abuts the tip of a veneer veneer being conveyed by a multi-row roller to stop its conveyance step by step," as disclosed in the continuous manufacturing apparatus for laminated veneer materials, etc. A large number of stopper groups that can be raised and lowered freely, and the veneer veneers that are stopped in stages by the stopper groups are dropped directly below each time by a lifting mechanism attached to the multi-row roller, thereby joining the veneer veneers during the stacking process. Using the so-called butt joint method, the intermediate product with a predetermined number of layers is placed at a fixed location using a large number of fixed stoppers. A device designed to assemble one load at a time, or a wood veneer conveyed by a conveyor, as disclosed in Patent Application Publication No. 59-500126, Method and Apparatus for Manufacturing Laminated Wood, etc. A single stop device that moves sequentially and comes into contact with the tip of the slit to stop the conveyance step by step; By pressing the wood veneers and moving them directly below each time using a gripping device, we manufactured laminated wood in a shape in which the joints of the wood veneers were staggered in a step-like manner during the lamination process.''This is the so-called scarf joint type. There was a device that used a single movable stopping device to move the stopping points of each wood veneer from point to point while continuously forming a predetermined number of layers of intermediate products.

V\) Problems to be Solved by the Invention As mentioned above, the prior art method and device for assembling this type of laminated veneer material is limited to the former ``fixed large group of stoppers that are placed at a predetermined assembling location.'' In the case of a device that assembles a number of laminated intermediate products one batch at a time, the length of the assembled intermediate product is limited to the length of a single plywood veneer, making it difficult to carry out the subsequent heat-pressing process. As a result of the transfer cycle of intermediate products being reduced to once every several tens of seconds, the proportion of ineffective time occupied by pressurization and depressurization of heat press equipment such as a high frequency press in the heat press process has increased. This poses serious difficulties in process operation, such as making it difficult to secure the desired heat-pressing time during assembly time. In the case of a device that moves the wood veneers from one stop to another to continuously form intermediate products with a predetermined number of layers, each wood veneer has a number of layers of at least 10 or more plies. Since the stop device is moved point by point by following the ever-changing stop location of the stop device, the ineffective time for movement increases, which not only reduces the efficiency of the system, but also requires constant position stop control over multiple points of the stop device. The present invention eliminates this problem, as the individual stopping errors may act synergistically to cause large overlapping deviations in places where the bevel cut is overlapped. In order to achieve this, "a large number of movable stopper groups or a stopper group that also serves as a knock-off device are carried in multiple times for each load of the mechanism that has reached a predetermined number of stacks, the number of times equal to the slotted interval of the plywood veneer. The system was moved to the side and multiple sets of intermediate products were sequentially assembled on a structured conveyor.

Means for Solving the Problems The present invention is a means for eliminating the difficulties in process operation or function of the method and apparatus for assembling this type of veneer laminated material according to the above-mentioned prior art. B) A large number of stopper groups are arranged in series on the side of the stopper, and b) The group of small flanges is arranged so as to be movable toward the loading side by the width of the cut interval of the plywood veneer. ) A moving system method and device in the manufacturing process of veneer laminated materials, the main feature of which is to sequentially arrange multiple sets of intermediate products on a system conveyor using the stopper group and the moving device or transfer device. .

(E) Function The moving mechanism method of the present invention is such that, as shown in FIG.
Contrasting bevel cut point 2a with a slope S about 5 times larger,
2b is processed using a tenoner or the like, and an adhesive is applied to the lower surface of the board using a spreader or the like, except for those that are installed in the bottom layer, and an upper surface conveyance mechanism, such as an adsorption type, is applied.
The material is transported directly above the assembly location or directly above the transfer device installed on the side of the assembly location using various types of top surface transportation mechanisms such as stick-on type and open/close type. The veneer veneers 1a and 1b are placed one after the other on the conveyor 3.
The overlapped parts 2a and 2b of the upper and lower layers are overlapped, and the overlapped parts 4 of the adjacent upper and lower layers are shifted in a step-like manner, for example, with a shift distance R of about 30 times the plate thickness t separated. In the manufacturing process of laminated veneer material, which is configured to be assembled into a predetermined number of intermediate products 5 by shifting the number of layers, a large number of stopper groups 6 are arranged in series in multiple stages on the structured conveyor 3 at a shifting distance R. For each load of the structure that reaches a predetermined number of laminations, the number of slots is cut by the slot cutting interval of the veneer veneer 1, that is, the slot cutting point 2 on one side from the total length 1 of the veneer veneer 1.
The cutting interval before and after subtracting the slope S of a and 2b (i
-3> to the carry-in side multiple times, and a plurality of sets of intermediate products 5 are successively assembled on the assembly conveyor 3.

Incidentally, the intermediate products 5 that have been continuously assembled on the assembly conveyor 3 are handed over to the subsequent heat-pressing process or temporary attachment process, and the last part thereof is returned to its original position. Of course, it can be operated to stop directly under the stopper group 6 and prepare for the next mechanism.

〜Embodiment As shown in FIG. 2, an example of the implementation of the moving mechanism device of the present invention is as shown in FIG.
Contrasting bevel cut point 2a with a slope S about 5 times larger,
2b is processed with a tenoner or the like, and the lower surface of the board is coated with adhesive using a spreader, etc., except for the one installed in the bottom layer, and the upper surface is equipped with a suction fan 7 and a suction fan 8. A transfer device installed directly above or on the side of the structured conveyor 3 is attached to the lower surface of the roller conveyor 9 and driven at an appropriate speed by a belt conveyor 10 or the like that drives the roller conveyor 9 from the outer periphery. The structure is such that it is conveyed directly above. Further, between the rows of the roller conveyor 9, a plurality of stopper groups 6, which also serve as knock-off devices, are integrally installed so that the overlapping portions 4, which are about 30 times the thickness of the board thickness chamber, can be formed at a distance R apart from each other. . Furthermore, the stopper group 6, which also serves as the knock-off device, is configured to be able to reciprocate toward the carry-in side by a movable chain mechanism 11 suspended horizontally with the roller conveyor 9. The one in the intermediate position becomes the 7-stopper-dedicated mechanism 6a, and from the first stopping position, the veneer veneer 1 is cut apart by the cutting interval.
In other words, the front and rear bevel cutting intervals (
j! -3) The entire product is moved to the carry-in side several times at a time, and the intermediate products 5 are placed on the structured conveyor 3.
It is configured to operate continuously.

Note that a belt conveyor 1 is added to the multi-row roller conveyor 9.
The driving speed applied from the outer periphery via the veneer veneer 1 is controlled to reduce the impact reaction force when the bevel cut point 2a at the tip of the veneer veneer 1 collides with the stopper mechanism 68 during the conveyance process. In addition to being equipped with an automatic transmission device using a DC motor or the like, which can freely reduce the speed to about one-tenth of the normal conveyance speed immediately before the transfer, the suction type 7. Suction fan8.
Instead of the adsorption-type top-side conveyance mechanism consisting of the roller conveyor 9, a stick-on type, opening/closing type, or other top-side conveyance mechanism may be used.
It goes without saying that in some cases, instead of these upper surface conveyance mechanisms, a lower surface conveyance mechanism using a normal conveyor may be used.

(G) Effects of the Invention As described above, the present invention provides the following advantages: [a large number of movable stopper groups or a stopper group that also serves as a knock-off device is installed in a single veneer for each loading amount of the mechanism that has reached a predetermined number of stacked layers. This system moves multiple sets of intermediate products to the delivery side several times by the width of the slit interval on the board, so that multiple sets of intermediate products can be stacked consecutively on the system conveyor. There is a device that assembles a predetermined number of layers of intermediate products one by one at a fixed location in groups, and a device that has a movable single stop position that allows each wood veneer to stop at various locations. However, the problem with the former method was that the length of the assembled intermediate product was limited to the length of a single plywood veneer. As a result, the delivery cycle of intermediate products to the subsequent heat-pressing process has been shortened to once every several tens of seconds. There are serious difficulties in process operation, such as an increase in the proportion of dead time, making it difficult to secure the desired heat-pressing time during assembly time, and in the latter case, the number of laminated layers of at least 10-odd plies. Since the stopping device is moved point by point to follow the ever-changing stopping location of each wood veneer, the ineffective time for movement not only increases and the efficiency of the system decreases, but also the stopping device is Fixed-position stopping control over multiple points has serious functional drawbacks, such as the possibility that individual stopping errors may act synergistically, resulting in large overlapping deviations in places where the helical cut is overlapped. The present invention has been able to eliminate all of these problems, and when using the present invention, intermediate products of, for example, 9-ply veneer veneer with a length of 171'L are continuously assembled into four piles on a conveyor system. The total length is about 4m,
The assembly time is approximately 2 minutes, and the same time can be set as the heat pressure time of a 4m process length heat press machine such as a high frequency press in the subsequent heat pressure process, so the time required for pressurization and depressurization of the same machine is The time ratio has also become smaller, making it possible to safely secure the desired 2-minute heat-pressing time for a 9-ply intermediate product.
For the first time, it became possible to efficiently produce at a rate of m.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, with FIG. 1 being an explanatory view of the mechanism and operation, and FIG. 2 being a side view of the device. 1.1a, 1b-...Plywood veneer, 2a, 2b...
Lotus cutting point, 3... Structured conveyor, 4... Overlapping part, 5... Intermediate product, 6... Stopper group, l
...Full length of plywood veneer, S...Slope of slotted area, 1-8...Slotted space.

Claims (2)

[Claims] (1) The overlapped portions of veneer veneers whose front and rear edges have been processed into symmetrical bevel cuts in advance and adhesive has been applied to one side of the board surface, with the bevel cut points overlapping each other. In the manufacturing process of laminated veneer materials, which are arranged in steps to produce an intermediate product with a predetermined number of laminated layers, a large number of stopper groups arranged in series on a conveyor are used to make intermediate products with a predetermined number of laminated layers. A veneer laminate characterized in that each load of veneer veneer is moved to the carry-in side multiple times by the width of the slotted veneer, and a plurality of sets of intermediate products are successively stacked on the structured conveyor. A moving mechanism method in the manufacturing process of materials. (2) A roller conveyor that conveys the top surface of a plywood veneer while adsorbing it, a group of stoppers installed between rows of the roller conveyor that can be moved vertically and which also serves as a knock-off device, and the roller conveyor and the knock-off device. It is characterized by a moving chain mechanism in which a stopper group that also serves as A moving mechanism device used in the manufacturing process of laminated veneer materials.