JPH068204A - Method and apparatus for laminating mechanism for plywood employing upper face applicator - Google Patents

Abstract

PURPOSE:To enhance productivity, achieve labor-saving and improve adhesive properties irrespective of the number of plies to be stuck, by employing a plurality of applicators which apply an adhesive to the upper face of a core sheet, limiting the application of the adhesive to the upper and lower faces of a relatively flat-shaped core sheet and shortening the length of process. CONSTITUTION:An apparatus for a laminating mechanism for plywood, wherein two upper face applicators are employed, comprises: a first upper face applicator la for applying an adhesive to the upper face of a core sheet; a device 2 for reversing the upper and lower faces of the core sheet and crowning the same; a laminating mechanism conveyor 3; a second upper face applicator 1b; and a laminating and assembling device 4, and all of the above devices are constituted in a series process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises means for applying an adhesive to a core plate in the production of plywood, and means for polymerizing the core plate with a front plate, a back plate and an intermediate plate. The present invention relates to a plywood polymerization assembling method and apparatus using two top coaters as an adhesive coating means.

[0002]

2. Description of the Related Art Prior art relating to a plywood superposing method using a top coater such as an extruder and a sprayer and a device therefor is disclosed in, for example, Japanese Patent Laid-Open No. 1-125201. An apparatus for producing a 5-ply product using a top coater such as an extruder and a spray is disclosed. Usually, one roll spreader for double-sided coating is used to simultaneously apply the adhesive to both sides of the core plate.

[0003]

The apparatus of the conventional method for producing a 5-ply product by using the above-mentioned many top coaters is a backing plate and a first core on a polymerization structured conveyor which is serially connected in multiple stages. Four upper surface applicators for sequentially applying adhesive to the upper surfaces of the plate, the middle plate and the second core plate are arranged at intervals, and in the final step, the front plate to which no adhesive is applied is superposed integrally. This was done by a sticking method in which the intermediate products for 5 plies were assembled one after another by polymerization and deposition. Therefore, the conventional method of producing a 5-ply product using this type of top coater has a large number of at least four top coaters arranged on a long polymerization process which is connected in series in multiple stages. In addition to the core plate, a single-plate coating method was used in which the adhesive was applied to the upper faces of the back plate and the middle plate. Not only a great deal of labor is spent on adjustment, supply and recovery of the adhesive, and cleaning of the adhesive, but also a relatively flat core plate that is normally tendered with veneer veneer. In addition, when the adhesive is applied to the upper surface of the back plate or the middle plate, which has a relatively severe shape that is not usually tendered by veneer veneer, it is not There were some problems such as coating spots. There was a problem that the productivity was halved when the manufacturing equipment for the application was diverted to 3 plies. Furthermore, the equipment using the roll spreader for double-sided coating of the conventional method also adheres to the lower surface of the core plate. Since the agents are applied at the same time, it becomes difficult to transfer the single core plate by the conveyor, and the adhesive adheres to the conveyor, which requires a great deal of labor for cleaning.

Therefore, according to the present invention, in order to eliminate the above-mentioned drawbacks of the conventional method, the use of the top coater is limited to two, and the application of the adhesive is applied to both upper and lower surfaces of the core plate having a relatively flat shape. By limiting the application to repeated application, the process length is shortened, productivity is increased regardless of the number of applied plies, labor is saved, and adhesion is improved, and adhesive is applied to both upper and lower surfaces simultaneously. The purpose is to establish a new construction method that eliminates the need to transport individual core plates.

[0005]

To achieve the above object, the present invention provides a plywood superposing mechanism using two top coaters, which has the following constitutional requirements (a) to (c). This is a proposal for the method.

(A) A first upper surface coating step in which an adhesive is applied to the upper surface of the core plate carried in from the fiber direction by a first upper surface coating machine and carried out.

(B) Upside down erasing step in which the upper and lower portions of the core plate carried out from the first upper surface coating step are inverted by rotation to be knocked down directly below.

(C) A back plate or an intermediate plate or a back plate and a front plate in which two sheets are stacked is directly below the core plate which is to be knocked down with the adhesive coated surface facing down from the upside down flipping process. A superpositioning process in which the products are carried in alternately from the directions orthogonal to each other, and are carried out by superposing them on a 2-ply or 3-ply intermediate product.

(D) A second upper surface coating step in which the upper surface of the core plate, which is the uppermost surface of the intermediate product carried out from the polymerization assembling step, is again coated with an adhesive by a second upper surface coating machine and carried out.

(E) While sequentially stacking and stacking the intermediate products carried out from the second upper surface coating step, in the final step, a front plate is formed on the uppermost surface of the stacked stacks of the intermediate products in a direction orthogonal to the fiber direction. Polymerization and deposition process of bringing in and stacking them together.

Further, the present invention has the following constitutional requirements (f) to (j) for carrying out the plywood polymerization method, and uses the two top coaters to make a plywood polymerization method. This is a proposal for the device.

(F) A first upper surface coating machine comprising an extruder, a spray, etc., in which an adhesive is freely arranged on the upper surface of a core plate carried in by a conveyor.

(G) While vertically adsorbing or sticking the lower surface of the core plate carried out by the conveyor from the first upper surface coating machine, the upper and lower sides thereof are reversed by rotation and vertically arranged so as to be directly knocked down. A blowout machine.

(H) A back plate or a middle plate or a back plate and a front plate, which are a stack of two sheets, are carried directly under the upside-down crushing machine by a conveyor, and the intermediate product of 2 ply or 3 ply is appropriately used. Polymerization conveyors that can be stacked freely.

(I) A second upper surface coating consisting of an extruder, a spray, etc., in which an adhesive can be coated again on the upper surface of the core plate, which is the uppermost surface of the intermediate product carried out from the superposing conveyor. Machine.

(J) A polymerization deposition machine in which the intermediate product carried out from the second upper surface coating machine by a conveyor is sequentially polymerized and deposited, and a top plate is freely superposed on the uppermost surface thereof.

[0017]

A series of manufacturing steps of the plywood polymerization method using the two top coaters of the present invention are as illustrated in the process chart of FIG. 3, and (A) in the figure is a core plate supplying step. , (B) a first upper surface coating step of the core plate, (C) a step of vertically inverting the core plate, (D) a front plate supply step, (E) a back plate supply step, (F) is a step of supplying a middle plate, (G) is a step of polymerizing the front plate and the back plate, (H) is a step of polymerizing a core plate and the back plate, the middle plate and the front plate, (I). Is a second upper surface coating step of the core plate, (J) is a 2-ply intermediate plate made of the core plate, the back plate or the core plate, and an intermediate plate, or a 3-ply intermediate product made of the core plate, the back plate, and the front plate. And the step of polymerizing and depositing the floorboard, and (K) is the step of supplying and polymerizing the floorboard.

Further, the process diagram illustrated in FIG.
A process operation when a plywood polymerization method using a top coater of a table is applied to a sticking operation of a 3-ply product. First, in the start process operation, a core plate is started from step (A). The fiber is supplied in the fiber direction, the adhesive is applied to the upper surface of the core plate in the step (B), and the core plate is turned upside down in the step (C) to the step (H) from the step (E) to the fiber direction. It is blown down on the back plate supplied in the orthogonal direction to be polymerized into two plies, and then, in the step (I), the adhesive is applied again to the upper surface of the core plate which is the uppermost surface of the two plies ( J) is deposited as a two-ply intermediate product, and then the repeating process operation is performed to perform (A), (B), (C) in the same manner as in the above starting process operation.
After applying the adhesive to the core plate in the process and turning it upside down, the back plate and the front plate are supplied to the (H) process in two layers from the (D), (E) and (G) processes. Then, the adhesive is applied to the upper surface of the core plate, which is the uppermost surface of the three plies in the step (I), and is deposited in the step (J). Repeatedly producing the 3-ply intermediate product by repeating the steps of the number of times, and then shifting to the final step operation, free-passing the steps (G), (H), and (I) (J) Transferring from the direction orthogonal to the fiber direction to the step of integrally stacking on the uppermost surface of the polymerized deposit of the intermediate product to complete the sticking work of one unit of 3-ply product Is.
In the step (J), a floor board is optionally supplied from the step (K) illustrated in the process diagram of FIG. 3 and is inserted into the upper and lower layers of the intermediate product polymerization deposit and the intermediate layer. It is used for removing distortion of products.

Next, the process diagram illustrated in FIG.
A process operation when the plywood polymerization method using two top coaters of the present invention is applied to a sticking operation of a 5-ply product will be described. First, the start process operation and the final process operation will be described. It is exactly the same as in the case of the polymerization assembling work of the 3-ply product described above, and it is an intermediate product of 2 plies in the steps (A), (B), (C) and the steps (E), (H), (I). The surface plate produced and deposited in the (J) step and transferred from the (D) step through the (G), (H), and (I) steps is deposited in the (J) step. In addition to performing the process operation of integrally superimposing on the uppermost surface of the polymerized deposit, the first repeating process operation and the second repeating process operation are sequentially repeated a predetermined number of times in an intermediate stage, and It is attached to a 5-ply product. In the first repeated process operation, the adhesive is applied to the core plate in the steps (A), (B), and (C), and the core plate is turned upside down, and then the step (F) is performed. It was blown down on the middle plate supplied from and polymerized into 2 plies.
The adhesive is applied again to the upper surface of the core plate on the uppermost surface of the plies, and is deposited as an intermediate product of 2 plies in the step (J), and in the above second repeating step operation, (A), (B) ，
After applying the adhesive to the core plate in the step (C) and turning it upside down, proceed to the step (H) from the steps (D), (E), (G) to 2
It is piled up on the back plate and the front plate which are supplied, and is piled up to be polymerized into 3 plies. Then, in step (I), the adhesive is applied again to the upper surface of the core plate which is the uppermost surface of the 3 plies. (J) process. In the case of the 5-ply product, as in the case of the 3-ply product, a floor board is optionally supplied from the (K) step illustrated in the process chart of FIG. 3 to the (J) step (J). Of course, it is inserted into the upper and lower layers and the intermediate layer of the polymerized deposit during the process and used for strain relief of the product.

As described above in detail with respect to the process operation of the present invention, in the method of polymerizing plywood using the two upper surface coating machines of the present invention, the adhesive is applied to the upper and lower surfaces thereof by the two upper surface coating machines. Produced by polymerizing a total of 3 core plates, one that is repeatedly coated, the other that is not coated with an adhesive, and one for the front plate. A core that is always coated with an adhesive on the top surface. There is a board 3
An intermediate product of ply, one core plate on which adhesives are repeatedly applied by two top coaters on both upper and lower surfaces, and a middle plate on which no adhesive is applied Produced, there is always a core plate with adhesive applied on the top surface 2
It is configured so that the required 3 ply product and the required 5 ply product can be produced arbitrarily and highly efficiently in the same shortened manufacturing process by a mechanism that arbitrarily combines ply intermediate products. It is a thing.

[0021]

1 and 2 are a plan view and a side view showing an embodiment of a plywood superpositioning apparatus using two top coaters of the present invention. First and second upper surface coating machines consisting of a truder, etc., 2 is an upside down crushing machine equipped with a transfer, suction, and crushing mechanism and rotatably mounted on a shaft. 3 is an intermediate product with the required number of plies. Polymerization-structured conveyors that have the function of stacking plates, back plates, middle plates, and front plates, and free-passing the front plates in the final process.
Is used for sequentially stacking intermediate products with a required number of plies, and in the final step, superposing the front plate on the uppermost surface of the polymerized deposit 4a, and inserting a strain-removing base plate in the upper and lower layers and the intermediate layer as necessary. It is a polymerization deposition machine with functions. In the figure, reference numeral 5 is a core plate deposition, 6 is a middle plate deposition, 7 is a back plate deposition, 8 is a front plate deposition, and 9 is a floor plate deposition. Further, 10a, 10b, 10c and 10d are manual or automatic type feeders including pinch rolls or suction feeders for core plate, middle plate, back plate, front plate, and 11 for raising and lowering floor plate. A manual or automatic feeding polymerization machine 12a, 12b, 12c comprising a suction head of a mold and the like are conveyors.

The first and second upper surface coating machines 1 are supported.
a and 1b are collection boxes 14a and 1 directly below a large number of thin tube nozzles 13a and 13b in which an adhesive that is pressure-fed from a separate device such as a fluid pump is installed orthogonally to the transport direction.
The second upper surface coating machine 1b, which is configured to be capable of being ejected in a noodle-like shape toward 4b, and which is arranged particularly at an intermediate portion in a series of steps, does not apply an adhesive to the front plate in the final step. A bypass member for the injection adhesive, which includes an opening / closing gutter having a function of making a free pass, a lifting mechanism for the nozzle 13b, and the like are additionally provided. Further, the upside down crushing machine 2 is, for example, as shown in the figure, vertically symmetrical conveyors 15a and 15b, suction boxes 16a and 16b, and crushing mechanisms 17a and 17b.
And the like are rotatably mounted on the core plate, and are configured to have a device for transporting, adsorbing, reversing, and knocking down the core plate. Furthermore, the superposing mechanism conveyor 3 further superposes a front plate and a back plate on top of each other. The conveyor 18 is installed inside, and while continuing the transfer of the individual back plates, middle plates, two-layered front plates and back plates in sequence, they are transferred to just below the upside down crushing machine 2 and temporarily stopped there. , The intermittent rotation mechanism such as a servo motor is axially mounted so that the core plate that is knocked down by the upside-down flipping down machine 2 is superposed, and the fixed position stop control is intermittently and automatically performed. It is configured as follows. The polymerized deposit 4a, which is an intermediate product of 3 plies or 5 plies and is carried out from a conveyor 12c connected to the polymerization deposition machine 4, is carried into a cold press or a hot press to be a plywood product of 3 plies or 5 plies. Needless to say, it is attached to.

[0023]

As described above, according to the present invention, the use of the top coater is limited to two and the adhesive is repeatedly coated on the upper and lower surfaces of the core plate having a relatively flat shape. However, by limiting the number to the above, it is difficult to adjust the coating amount at the same time by installing a large number of top coaters, which is a difficulty of the conventional method, it is difficult to supply and recover the adhesive, and a lot of labor is required for the cleaning work. Not only was it possible to wipe away the uneconomical expense, but since no adhesive was applied to the back plate and middle plate with severe erosion, there was no occurrence of adhesive application spots due to erosion of veneer veneer. To improve the adhesiveness, and also eliminate the half of the productivity that occurs when the conventional manufacturing method for 5-ply is used for 3-ply, thereby reducing the required 3-ply product in the same manufacturing process. And required 5 ply products It is possible to produce with high efficiency, and further, it is possible to simplify the transfer of the core plate by the conveyor by eliminating the transfer of the single core plate coated with the adhesive on the upper and lower surfaces simultaneously by the conventional method. The implementation effect of rationalization is extremely remarkable.

[Brief description of drawings]

FIG. 1 is a plan view of a plywood superposing apparatus using two top coaters.

FIG. 2 is a side view of the same.

FIG. 3 is a process diagram showing a series of polymerization assembling processes.

FIG. 4 is a process diagram showing a process operation of a 3-ply product.

FIG. 5 is a process diagram showing a process operation of a 5-ply product.

[Explanation of symbols]

1a, 1b Top coater 2 Top-down flipping machine 3 Polymerization conveyor 4 Polymerization deposition machine A Core plate feeding process B Core plate first top coating process C Core plate vertical flipping process D Front plate feeding process Process E Back plate supply process F Middle plate supply process G Front plate and back plate polymerization process H Core plate and back plate, middle plate, front plate polymerization assembly process I Core plate second upper surface coating process J 2 Polymerization and deposition process of ply or 3-ply intermediate product and floor plate K Polymerization and deposition process of floor plate

Claims (4)

[Claims] 1. A first upper surface coating step of applying an adhesive by a first upper surface coating machine and carrying out the upper surface of a core plate carried in from the fiber direction, and carrying out from the first upper surface coating step. Upside down flipping down step of knocking down the core plate while rotating it upside down by turning it upside down, and a back plate directly underneath the core plate that is knocked down from the upside down flipping down step with the adhesive application surface facing down. The middle plate or the back plate and the front plate, which are two layers, are loaded one by one from the direction orthogonal to the fiber direction, and two are respectively loaded.
A superpositioning step of stacking and discharging the ply or 3-ply intermediate product, and an adhesive is again applied to the upper surface of the core plate on the uppermost surface of the intermediate product carried out from the superposing step by the second top coater. A second upper surface coating step of applying and carrying out, and a step of superimposing the intermediate product carried out from the second upper surface applying step on the top surface of the polymerized deposit of the intermediate product in the final step while sequentially polymerizing and depositing the intermediate product. And a polymerization and deposition step of carrying in the resin from a direction orthogonal to the fiber direction and superposing them integrally on each other, using a top coater. 2. A core plate supply step in the first top surface coating step, a back plate / middle plate / front plate supply step and a back plate / front plate polymerization step in the superpositioning step, and the superposition deposition step. The method for polymerizing plywood using an upper surface coating machine according to claim 1, wherein a step of supplying and polymerizing a floor plate is consecutively provided in each step. 3. A first upper surface coating machine comprising an extruder, a spray, etc. in which an adhesive is freely arranged on the upper surface of a core plate carried in by a conveyor, and a conveyor from the first upper surface coating machine. An upside down crushing machine that is arranged so that it can be flipped upside down by rotation while vertically adsorbing or sticking the lower surface of the core plate that is carried out, and can be knocked down directly below, and a back plate directly below the upside down crushing machine. Or middle plate or 2
A stacking backing plate and a front plate are alternately carried in by a conveyor, and a polymerization assembly conveyor in which a two-ply or three-ply intermediate product is arranged so as to be appropriately stackable, and the intermediate product carried out from the polymerization assembly conveyor. A second upper surface coating machine including an extruder, a spray, etc. in which an adhesive can be coated again on the upper surface of the core plate, which is the uppermost surface of the product, and a conveyor is carried out from the second upper surface coating machine. Polymerization of plywood using an upper surface coating machine, which comprises a polymerization deposition machine in which a surface plate is freely superposed on the uppermost surface of the polymerization deposit of the intermediate product while the intermediate products are sequentially polymerized and deposited. Structure device. 4. A core plate feeder for the first top coater, a back plate / middle plate / front plate feeder and a back plate / front plate polymerization conveyor for the superposition mechanism conveyor, and the superposition stacking. 4. A plywood polymerization skeleton apparatus using a top coater according to claim 3, wherein each of said machines is provided with a floor plate supply polymerization machine.