JP3717332B2 - Glulam production method and production apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for manufacturing a laminated material formed by adhering members made of a plurality of plate materials or the like with an adhesive.
[0002]
[Background]
In recent years, laminated wood is often used as a building material. This laminated material is constituted by applying an adhesive to the adherend surfaces of a plurality of members (plate materials) and superimposing them on each other.
Conventionally, in order to produce a laminated material, a plate material is cut into a predetermined size with a molder, an adhesive is applied to a surface to be bonded (plane) of the plate material, and an operator applies the plate material to which the adhesive is applied one by one. Overlay from bottom to top.
The stacked plate materials are first bonded and fixed by pressing a plurality of plate materials in the overlapping direction after the side surfaces thereof are aligned to eliminate a lateral shift by a pressing device.
[0003]
[Problems to be solved by the invention]
In the above-described conventional example, since the plate members are stacked up in order from the bottom by the worker, the plate members stacked in the vertical direction are displaced in the lateral direction of the side surfaces. For this reason, the lateral displacement of this side surface is eliminated by a press device. However, a single plate material constituting the laminated material is relatively long and heavy, and the operator must handle it carefully. When the plate materials are stacked, curing of the adhesive applied to the lower plate materials may start over time.
After the adhesive has hardened, forcibly correcting the lateral displacement of the stacked plates will adversely affect the bonding performance, so the amount of adhesive applied to the plates has been increased. ing.
[0004]
Therefore, there is a problem that a long clamping time and a curing time are required to sufficiently bond and fix the plate materials. The inconvenience that the production efficiency decreases due to the increase of the clamping time and the curing time.
Moreover, when the plate material is pressed by the press device in the overlapping direction, the adhesive protrudes from the side surface of the plate material. The protruding adhesive does not contribute to the adhesion of the plate material, and is useless. In addition, if the finishing process is performed immediately after the pressure is released, there arises a disadvantage that the adhesive adheres to the machine.
Here, the amount of the adhesive that bonds the plate members disposed below is increased, and the amount of the adhesive that bonds the plate members disposed above is decreased to reduce the amount of the entire adhesive. Is also possible. However, in this case, the amount of adhesive applied to the plate material must be changed depending on the plate material, and the operation of applying the adhesive becomes complicated.
[0005]
An object of the present invention is to provide a method and an apparatus for manufacturing a laminated material in which the adhesive does not protrude from the side surfaces of the stacked members, and the tightening time and curing time for bonding and fixing are short. is there.
[0006]
[Means for Solving the Problems]
Therefore, the present invention intends to achieve the object by applying an adhesive in advance to each of the surfaces to be bonded of a plurality of members and superimposing these members almost simultaneously. Specifically, the method for producing a laminated material of the present invention is a method for producing a laminated material 1 formed by bonding a plurality of members 2 with an adhesive, as described with reference to the accompanying drawings. Adhesive is applied in advance to the adherend surface of the member 2, and these members 2 are superposed at the same time, and then the plurality of members 2 are pressed in the superposition direction, and the adhesive is applied in advance to the adherend surface 2A. The plurality of members 2 arranged side by side are held by holding members 72, and by pulling out the holding members 72 from the upper holding member 72 to the lower holding member 72 in this order. The member 2 is instantaneously overlapped .
[0007]
Moreover, the manufacturing apparatus of the laminated material of this invention is an apparatus which manufactures the laminated material 1 formed by the some member 2 being adhere | attached with an adhesive agent, Comprising: The adhesive agent was previously apply | coated to the to-be-adhered surface 2A. And a pressing device 8 that presses the plurality of members 2 stacked by the loading device 7, and the loading device 7 has a linear alignment surface. A casing 70 in which 70A is formed, and a plurality of holding members 72 that are respectively provided so as to be able to protrude and retract with respect to the alignment surface 70A of the casing 70 and hold the member 2 to which the adhesive is previously applied to the bonded surface 2A. These holding members 72 each have an in / out mechanism 73 that moves in and out with respect to the alignment surface 70A, and the holding members 72 each holding the plurality of members 2 are immersed in the alignment surface 70A. Wherein said that the member 2 is superimposed Rukoto.
[0008]
In the present invention relating to the manufacturing method and the manufacturing apparatus having the above-described configuration, the member 2 whose adhesive surface is applied to the bonded surface 2A is formed on the holding member 72 that is protruded from the alignment surface 70A by the projecting mechanism 73 of the loading device 7. Hold. Similarly, the plurality of members 2 each having an adhesive applied to the adherend surface 2A are held by the holding members 72 protruding from the alignment surface. The member 2 in the present invention includes a plate material and a square material.
Thereafter, the retracting mechanism 73 is actuated so that all of the holding members 72 are retracted substantially simultaneously from the alignment surface 70A. Here, immersing at substantially the same time includes not only the case where all the holding members 72 are pulled out accurately at the same time, but also the case where the holding members 72 arranged on one side are sequentially pulled out toward the holding member 72 arranged on the other side. .
Then, the member 2 is instantaneously overlapped along the alignment surface 70A.
Furthermore, the pressing device 8 aligns the side surfaces of the superimposed members 2 and then presses the members 2 in the overlapping direction.
[0009]
Therefore, in the present invention, the plurality of members 2 each having the adhesive applied to the adherend surface 2A are instantaneously, in other words, substantially simultaneously overlapped, so that the members 2 constituting the laminated material 1 are overlapped with each other. Is shorter than before. For this reason, the adhesive at a predetermined portion of the member 2 to be overlaid does not harden. Therefore, in order to align the side surfaces of the member 2 performed in a later process, a large amount of adhesive is applied to the adherend surface 2A of the member 2. There is no need to apply.
That is, since the adhesive to be used can be minimized, it is possible to shorten the clamping time and the curing time for fixing the members 2 together.
In addition, even if the members 2 are pressed against each other in the overlapping direction in order to securely fix the adhesive, the adhesive does not protrude from the side surfaces of the members 2. Therefore, waste of the adhesive can be eliminated.
[0010]
Here , in the manufacturing apparatus of the present invention, the positioning surface 70A may be formed along the top and bottom, and the holding member 72 may be arranged side by side. In this configuration, the plurality of members 2 are instantaneously overlapped by the gravity, and the configuration for overlapping the members is simplified.
[0011]
In the present invention, the adhesive may be a honeymoon adhesive composed of two types of adhesive constituent materials A and B. In this case, the adhesive constituent materials A and B are respectively adjacent to the adjacent members 2. It is applied to the adherend surfaces 2A facing each other.
In this configuration, since the curing of the adhesive does not proceed until the members 2 to which the different adhesive component materials A and B are applied are superimposed, the above-described effects can be achieved more effectively.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a laminated material 1 manufactured in this embodiment. FIG. 1A is an exploded perspective view of the laminated material 1, and FIG. 1B is a perspective view of the laminated material 1.
In FIG. 1, the laminated material 1 is comprised by apply | coating an adhesive agent (not shown) to the to-be-adhered surface 2A which mutually opposes the some member 2 and overlapping. The member 2 is a plate material obtained by processing red pine, larch, fir, spruce, and other trees into a planar rectangular plate shape, and has a structure defined by JAS. In the present embodiment, the member 2 may be a square member instead of the plate member.
[0013]
Examples of the adhesive include urea resin-based adhesives, phenol-based adhesives, honeymoon adhesives, and other adhesives used for bonding wood materials.
The honeymoon adhesive is composed of two types of adhesive constituent materials A and B applied to the bonded surfaces 2A of the adjacent members 2 facing each other. For example, imide resin is used as the adhesive component A, glyoxal is used as the adhesive component B, or a polymer compound having an acetoacetyl group is used as the adhesive component A, and aldehyde is used as the adhesive component B A compound, a polyethyleneimine, or a hydrazine compound as a main component may be used. In short, the specific type of the adhesive is not particularly limited as long as it is an adhesive that rapidly gels or hardens when superposed on each other. Further, a curing agent that reacts with the adhesive constituent material A for improving water resistance and heat resistance may be mixed in advance and used.
[0014]
FIG. 2 shows an apparatus for manufacturing a laminated material according to this embodiment.
In FIG. 2, the manufacturing apparatus applies a adhesive to the member 2, a molder 4 that processes the rough material stored in the rough material storage 3 into the member 2, a sorting device 5 that sorts the member 2 by grade, and the member 2. The coating device 6, the stacking device 7 for stacking the members 2 as many as the number of the laminated materials, the press device 8 for pressing the laminated members 2 to press the laminated material 1, and the laminated material 1 are finished. It is comprised from the line provided with the molder 9.
[0015]
The molder 4 has a general structure in which the member 2 is formed by cutting the flat surface, bottom surface, and left and right side surfaces of the coarse material stored in the coarse material storage 3. The flat surface and bottom surface of the member 2 are the bonded surface 2A.
The member 2 formed by the molder 4 is sent to the sorting device 5 through the conveyor 10.
The sorting device 5 has a general structure for classifying the members 2 according to bending rigidity or the like. The members 2 sorted by the sorting device 5 are sorted and accumulated in a plurality of stockers 11.
[0016]
The coating device 6 applies an adhesive to the adherend surface 2A of the member 2 sent by the conveyor 12, and as a specific configuration thereof, for example, a liquid adhesive is accommodated in a hopper (not shown). There is a type that sprays from the hopper onto the adherend surface 2A of the member 2 or a case where an adhesive is placed on a roll (not shown) and the adhesive is transferred to the adherend surface 2A through the member 2 on this roll.
The member 2 to which the adhesive is applied by the coating device 6 is sent to the loading device 7 by the conveyor 13.
[0017]
Here, when a general adhesive such as a urea resin is used as the adhesive, the adhesive is applied only to the plane of the member 2 arranged at the middle part and the lower part of the laminated material 1. By overlapping the adjacent members 2, the adhesive is evenly spread on the bonded surfaces 2 </ b> A facing each other.
On the other hand, when a honeymoon adhesive is used as the adhesive, the adhesive constituent material A is applied to the plane of the member 2 disposed in the middle and lower parts of the laminated material 1, and the upper part of the laminated material 1 and The adhesive constituent material B is applied to the bottom surface of the member 2 disposed in the intermediate portion.
[0018]
A schematic configuration of the loading device 7 is shown in FIG.
In FIG. 3, the loading device 7 includes a casing 70 in which a linear alignment surface 70A is formed vertically, a moving mechanism 71 that moves the casing 70 back and forth as indicated by an arrow P, and an alignment surface 70A. And a plurality of rod-shaped holding members 72 provided so as to be able to move in and out, and a protruding and retracting mechanism 73 for moving these holding members 72 in and out of the alignment surface 70A.
[0019]
The casing 70 is formed in a substantially box shape, and a cradle 74 for receiving the member 2 is provided at a lower portion along the alignment surface 70A.
In order to horizontally hold the member 2 at a plurality of positions in the longitudinal direction, the holding member 72 is a plurality of pairs arranged in the horizontal direction, and the paired holding members 72 are lined up and down. A plurality (six pairs in FIG. 3) are provided.
The retracting mechanism 73 is composed of a cylinder device that drives the holding member 72 forward and backward. The holding member 72 protrudes from the alignment surface 70A in the advanced state to hold the member 2 (see the imaginary line), and is stored in the casing 70 in the retracted state (see the solid line).
[0020]
A schematic configuration of the pressing device 8 is shown in FIG.
In FIG. 4, the pressing device 8 includes a pressure-resistant wall 80 disposed in the center, two rows of conveyors 81 provided on both sides of the pressure-resistant wall 80 and respectively conveying two sets of laminated material 1, and these conveyors Two rows of elevating and pressing portions 82 disposed so as to be movable up and down above 81, a horizontal pressing portion 83 disposed so as to face and separate from the pressure-resistant wall 80, and a plurality of guide rollers 84 for guiding the laminated material 1, It is composed of
[0021]
The conveyer 81 conveys the laminated material 1 formed by stacking a plurality of members 2, and also serves as an elevating press unit that presses the plurality of members 2 in the overlapping direction with the elevating and pressing unit 82.
The conveyance conveyor 81 is provided with a pressure-resistant member (not shown) so that the conveyance conveyor 81 does not bend when the plurality of members 2 are pressed by the elevation pressing unit 82.
[0022]
The raising / lowering pressing part 82 is formed in a substantially block shape, and is driven forward / backward with respect to the transport conveyor 81 by a cylinder device (not shown).
A total of four ascending / descending pressing portions 82 are provided in two rows, two for each row. Each elevation pressing portion 82 is formed such that the widthwise dimension thereof is shorter than the distance between the pressure resistant wall 80 and the guide roller 84 in order to prevent interference between the pressure resistant wall 80 and the guide roller 84.
[0023]
The pressure wall 80 and the horizontal pressing portion 83 constitute a horizontal pressing means for aligning the side surfaces of the plurality of members 2.
The horizontal pressing portion 83 is formed in a substantially block shape, and is driven forward and backward with respect to the pressure-resistant wall 80 by a cylinder device (not shown).
A total of four horizontal pressing portions 83 are provided, two on each side. In order to prevent interference with the guide roller 84, each horizontal pressing portion 83 is formed so that the dimension in the width direction is shorter than the interval between the adjacent guide rollers 84.
[0024]
Next, the manufacturing method of the laminated material 1 of this embodiment is demonstrated with reference to FIG.
First, a rough material is processed into a member 2 by a molder 4, and the member 2 is sorted by grade by a sorting device 5.
Thereafter, as shown in FIG. 5A, an adhesive is applied to the adherend surface 2 </ b> A of the member 2 by the coating device 6.
Further, as shown in FIG. 5 (B), the member 2 having the adhesive applied to the adherend surface 2A is stacked by the stacking device 7.
[0025]
For this reason, the member 2 is arranged with the adherend surface, on which the adhesive is applied, on the cradle 74 of the loading device 7 facing upward. Thereafter, the retracting mechanism 73 is operated to cause the lowermost holding member 72 to protrude from the alignment surface 70 </ b> A, and the member 2 to which the adhesive is applied is disposed on the holding member 72. In this state, the upper holding member 72 remains immersed from the alignment surface 70 </ b> A, and does not interfere with the operation of disposing the member 2 on the lowermost holding member 72.
Similarly, the second-stage holding member 72 from the bottom is projected from the alignment surface 70 </ b> A by the retracting mechanism 73, and the member 2 to which the adhesive is applied is disposed on the holding member 72. This operation is repeated until the member 2 is held by the uppermost holding member 72.
[0026]
If the member 2 is held up to the uppermost holding member 72, the retracting mechanism 73 is operated, and all the holding members 72 are pulled out almost simultaneously as shown in FIG. ). Here, pulling substantially simultaneously includes not only the case where each holding member 72 is pulled out accurately in synchronization, but also the case where there is a slight shift in the drawing time of each holding member 72. For example, a case where the holding member 72 is pulled out in order from the uppermost holding member 72 to the lowermost holding member 72 is included. In this case, the uppermost holding member 72 is pulled out to form the uppermost member 2 in two stages. Immediately after being dropped onto the member 2 held by the eye holding member 72, the second stage holding member 72 may be pulled out and this may be repeated up to the lowermost holding member 72.
Then, since the movement of the plurality of members 2 in the horizontal direction is restricted by the alignment surface 70 </ b> A, the plurality of members 2 fall downward along the alignment surface 70 </ b> A and are superimposed on the cradle 74 instantaneously (substantially simultaneously). In the case where the holding member 72 is pulled out in order from the top, the distance that each member 2 moves is shortened, and the displacement of the member 2 in the left-right direction is reduced.
[0027]
The plurality of members 2 stacked by the stacking device 7 are conveyed to the pressing device 8 for each unit constituting the laminated material 1 and are pressed in the horizontal direction and the vertical direction here.
First, as shown in FIG. 5D, the horizontal pressing portion 83 is advanced toward the pressure-resistant wall 80 to press the plurality of members 2 in the horizontal direction. Thereby, the some member 2 piled up by the conveyance conveyor 81 loses the shift | offset | difference, and a side surface is arrange | equalized.
Thereafter, as shown in FIG. 5 (E), the elevating / pressing portion 82 is lowered toward the conveyor 81, and the plurality of members 2 are pressed in the vertical direction, that is, in the overlapping direction, as shown in FIG. 5 (F). The illustrated laminate 1 is produced.
The laminated material 1 is finished with a molder 9.
[0028]
Therefore, according to the manufacturing method of the laminated material according to the present embodiment, a plurality of members 2 previously coated with an adhesive are arranged on the adherend surface 2A, and these members 2 are overlapped instantaneously (substantially simultaneously), and then Since the plurality of members 2 are pressed in the overlapping direction, the time in which the members 2 constituting the laminated material 1 are overlapped with each other is shorter than before, and the adhesive at a predetermined portion of the overlapped member 2 is cured. There is nothing.
Therefore, it is not necessary to apply a large amount of adhesive to the adherend surface of the member 2 in order to align the side surfaces of the member 2 performed in the pressing process, and the clamping time and curing time for the members to be bonded and fixed. Can be shortened. In addition, even if the members 2 are pressed together in the overlapping direction in order to securely fix the adhesive, the adhesive does not protrude from the side surfaces of the members 2, and the waste of the adhesive can be eliminated.
[0029]
Furthermore, the manufacturing apparatus of the laminated material concerning this embodiment is provided with the loading apparatus 7 which piles up the some member 2 by which the adhesive agent was apply | coated previously to 2A of to-be-adhered surfaces, and the loading apparatus 7 is a linear position. A casing 70 on which a mating surface 70A is formed, a plurality of holding members 72 that are respectively provided so as to be able to protrude and retract with respect to the positioning surface 70A and hold the member 2 to which the adhesive is applied in advance on the adherend surface 2A; These holding members 72 each have an in / out mechanism 73 that moves in and out with respect to the alignment surface 70A, and the members 2 are inserted into the alignment surface 70A by immersing the holding members 72 holding the plurality of members 2 respectively. Since it is set as the structure superimposed, the effect of the above-mentioned manufacturing method can be achieved with a simple structure.
[0030]
Further, in the present embodiment, the plurality of members 2 that have been previously coated with an adhesive on the adherend surface 2A are arranged side by side and held by holding members 72, and these holding members 72 are pulled out simultaneously. Therefore, since the members 2 are instantaneously overlapped, the plurality of members 2 are instantaneously overlapped by the gravity, and the configuration of the apparatus becomes simpler.
[0031]
Moreover, if the adhesive is a honeymoon adhesive made of adhesive constituent materials A and B, the curing of the adhesive does not proceed until the members 2 to which the different adhesive constituent materials A and B are applied are overlapped. Therefore, the above-described effect can be achieved more effectively. In other words, the working time for holding the member 2 by the holding member 72 can be increased.
[0032]
Further, since the pressing device 8 realizes a horizontal press for aligning the side surfaces of the plurality of members 2 and a vertical press for pressing the overlapping direction with a single device, the pressing device 8 performs the stacking while aligning the side surfaces of the plurality of members 2. Since the direction can be pressed, when pressing a plurality of members in the overlapping direction, the side surface is not mistakenly shifted.
[0033]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the alignment surface 70A of the loading device 7 is formed up and down, and the plurality of members 2 are instantaneously overlapped by the gravity. However, in the present invention, the bonded surface 2A is in the vertical plane. The structure which arrange | positions the several member 2 so that it may become, and gives the force of a horizontal direction to these members 2 and may overlap may be sufficient.
Further, a press device that aligns the side surfaces of the plurality of members 2 and a press device that presses the plurality of members 2 in the overlapping direction may be provided separately.
[0034]
【The invention's effect】
According to the present invention, since the amount of the adhesive applied to the adherend surfaces of the plurality of members constituting the laminated material can be reduced, the adhesive does not protrude from the side surfaces of the stacked members, and the adhesive is fixed. This has the effect of shortening the clamping time and curing time required.
[Brief description of the drawings]
FIG. 1A is an exploded perspective view of a laminated material, and FIG. 1B is a perspective view of a laminated material.
FIG. 2 is a schematic configuration diagram showing a laminated wood manufacturing apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic configuration diagram of a loading device.
FIG. 4 is a schematic perspective view of a press device.
5A to 5F are schematic configuration diagrams for explaining a method of manufacturing a laminated material according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Glued material 2 Member 2A To-be-bonded surface 7 Stacking apparatus 70 Casing 70A Positioning surface 72 Holding member 73 Extruding mechanism 8 Press apparatus

Claims (4)

A method of manufacturing a laminated member formed by bonding a plurality of members with an adhesive, wherein an adhesive is applied in advance to the adherend surface of the members, and these members are superposed at the same time, and then the plurality Press the member in the overlapping direction,
A plurality of the members, to which the adhesive is applied in advance, are arranged side by side and held by holding members, and the members are instantaneously overlapped by pulling out these holding members substantially simultaneously. A method for producing laminated timber characterized by the above. In the manufacturing method of the laminated material described in Claim 1 , the said adhesive agent is a honeymoon adhesive which consists of two types of adhesive constituent materials, and these adhesive constituent materials oppose each other of the said adjacent member, respectively. A method for producing a laminated material, which is applied to an adherend surface.   An apparatus for manufacturing a laminated material formed by bonding a plurality of members with an adhesive, and a stacking device for stacking a plurality of members, to which an adhesive is applied in advance, and a stacking device A press device that presses the plurality of stacked members, and the stacking device is provided with a casing on which a linear alignment surface is formed, and is capable of protruding and retracting with respect to the alignment surface of the casing. A plurality of holding members that respectively hold the members, and a retracting mechanism that causes the holding members to protrude and retract with respect to the alignment surface. The laminated member manufacturing apparatus, wherein the member is overlapped by immersing from an alignment surface. 4. The laminated timber manufacturing apparatus according to claim 3 , wherein the alignment surface is formed along the top and bottom, and the holding members are arranged side by side.

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