JPH09150423A - Manufacture of laminated panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive to improve the formability and quality and its yield by uniformizing the foaming of a core material. SOLUTION: This manufacturing method is composed of an assembling part 1 for piling up a plurality of flat platens and face sheets so as to simultaneously formably assemble a laminated panel, a temperature regulating part 2 for regulating the temperature of the assembled flat platens and face sheets to the predetermined temperature such as 30±5 deg.C, a pouring part 3 for pouring core material between a pair of temperature-regulated face sheets, a curing part 4 for expanding and solidifying the core material by keeping the panel, in which the core material is poured, at the predetermined temperature such as 30±3 deg.C and a disjointing part 5 for disjointing a formed panel and the flat platens for regulating the temperature of the assembled flat platens and face sheets to the predetermined temperature at the temperature regulating part 2 and then pouring the core material between the face sheets at the pouring part 3 and expanding and solidifying the core material at the curing part 4 so as to form a laminated panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a laminated panel, and more specifically, to filling a foamable core material between a pair of face plates incorporated between flat plates stacked at appropriate intervals. The present invention relates to a method for manufacturing a laminated panel in which a laminated panel is formed by molding.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing a laminated panel of this type, flat plates formed of, for example, an aluminum alloy extruded profile are stacked at appropriate intervals, and a pair of surface plates are provided between adjacent flat plates. A method for manufacturing a laminated panel is known, in which a foamable core material is injected between the surface plates, and then the core material is foamed and solidified at a predetermined temperature to form a laminated panel in which the core material is filled between the surface plates. ing. According to this manufacturing method, there is an advantage that a plurality of laminated panels can be manufactured simultaneously and the laminated panels can be mass-produced.

In general, in this type of laminated panel manufacturing method, a polyol-based stock solution containing a foaming agent and a polyisocyanate-based stock solution are mixed, and the mixed composition is injected between a pair of surface plates to foam. -A method of filling is known, and in this manufacturing method, CC1 ₃ F CFC is used as a foaming agent for a mixed composition. However, this CC1 ₃ F Freon, has become a major cause of the current "ozone hole", there is a tendency that the future use is prohibited in order to prevent environmental pollution.

Therefore, as means for solving the above problem,
C ₂ H as an alternative CFC that replaces the CC 1 ₃ F CFC
₃ FCl ₂ (CCl ₂ F—CH ₃ ) freon has been used.

[0005]

However, the above alternative CFCs have the following drawbacks as compared with conventional CFCs, so that the surface plate is significantly deformed irregularly. That is, the CFC substitute has a high solubility in urethane. Conventional CFCs have a boiling point of 23.8 ° C, whereas alternative CFCs have a high boiling point of 32 ° C. The foaming of alternative CFCs is slower than that of conventional CFCs. Since the undiluted solution expands (expands) after hardening, there are drawbacks such as the possibility of cracks and cracks. Due to these drawbacks, even if the same amount of conventional CFC is injected, there will be a space in the panel. However, there are problems such as occurrence of voids (voids) in the vicinity of the surface plate of the core material and a wavy shape or uneven pattern on the surface plate.

The present invention has been made in view of the above circumstances, and improves the moldability and quality by making the foaming of the core material uniform.
Provided is a method for manufacturing a laminated panel, which can improve the yield.

[0007]

In order to achieve the above object, a method of manufacturing a laminated panel according to a first aspect of the present invention comprises an assembly step of incorporating a pair of surface plates between flat plates which are stacked at appropriate intervals. A temperature control step of adjusting the temperature of the assembled flat plate and surface plate to a predetermined temperature, an injection step of injecting a foamable core material between the temperature-controlled surface plates, and foaming and solidification of the core material at a predetermined temperature And a curing step of molding the laminated panel, and a disassembling step of disassembling the flat plate and the molded laminated panel.

A method for manufacturing a laminated panel according to a second aspect is
An assembly process of incorporating a pair of surface plates between flat plates that are stacked at appropriate intervals, a temperature control process of adjusting the temperature of the assembled flat plates and surface plates to a predetermined temperature, and a temperature-controlled surface plate An injection step of injecting a foamable core material into the
A curing process of foaming and solidifying the core material at a predetermined temperature to form a laminated panel, a disassembling process of disassembling the flat plate and the formed laminated panel, and adjusting the temperature of the disassembled flat plate to a predetermined temperature. And a preliminary temperature control step for preparing for assembly.

In the present invention, the predetermined temperature for adjusting the temperature of the flat plate and the surface plate is somewhat different depending on the temperature when the core material is foamed and solidified, the environmental temperature of the climate, etc., but for example, room temperature is preferably set to 30 ± 5 ° C. It is better to do.

According to the present invention, a pair of surface plates are assembled between flat plates which are stacked at appropriate intervals, and then the flat plates and the surface plates are temperature-controlled to a predetermined temperature, before the core material is injected. By making the temperature of the surface plate constant, it is possible to promote the foaming of the core material and to make the foaming uniform (claim 1).

Further, by controlling the temperature of the flat plate disassembled from the laminated panel formed as described above to a predetermined temperature to prepare for assembly, temperature control of the flat plate before and during assembly is performed. In addition, the temperature control after assembling can be performed more quickly and accurately, and the foaming and homogenization of the core material can be further promoted (claim 2).

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. First Embodiment FIG. 1 is a schematic configuration diagram of laminated panel manufacturing equipment according to the method for manufacturing a laminated panel of the present invention.

The above-mentioned manufacturing equipment includes an assembling section 1 for stacking a plurality of flat plates and a surface plate so that a laminated panel (hereinafter referred to as a panel) can be simultaneously molded, and the assembled flat plate and the surface plate at a predetermined temperature, for example. The temperature control part 2 for temperature control (hereinafter referred to as temperature control) to room temperature (30 ± 5 ° C.), the injection part 3 for injecting a core material such as foamed polyurethane between a pair of temperature-controlled surface plates, and the core material are A main part is composed of a curing part 4 for keeping the injected panel at a predetermined temperature, for example, 30 ± 3 ° C. to foam / solidify the core material, and a dismantling part 5 for disassembling the molded panel and the flat plate. .

In the assembly unit 1, as shown in FIG. 2, the lowermost flat plate 8 is placed on the lower base plate 6, and the flat plate 8 is placed on the flat plate 8 via the spacer 9. Are stacked, and a pair of surface plates 10 are set at appropriate intervals via a frame material (not shown) to form a set of panel molding parts 1
1 is formed, and the panel molding portions 11 are sequentially stacked in the same manner to form a plurality of sets (7 cases are shown in the drawing) of the panel molding portions 11. Then, the upper base plate 12 is placed on the uppermost flat plate 8, and the upper base plate 12 and the lower base plate 6 are connected to each other by fastening the connecting rods 13 to press and fix the panel forming unit 11. It is supposed to be done. The panel molding unit 11 fixed in this way is placed on a dolly (not shown) and is sequentially transported to the temperature control unit 2, the injection unit 3, the curing unit 4, and the disassembly unit 5.

It is preferable that the flat plate 8 is a member that is lightweight, has excellent corrosion resistance, and has good thermal conductivity. For example, as shown in FIG. 7, it is made of an aluminum alloy having a plurality of parallel hollow portions 8a. It is made of extruded profile.
Further, in the above description, the lowermost flat plate 8 is placed on the lower base plate 6, but the spacer 9 is placed without placing the lowermost flat plate 8 and the panel forming part. 11 may be formed. Further, in the above description, the case where the upper base board 12 and the lower base board 6 are fastened and fixed by connecting the connecting rods 13 has been described, but instead of the connecting rods 13, for example, the upper base board 12 is used.
Alternatively, the chain that is hung on the lower base board 6 may be tightened and fixed by pressing.

As shown in FIGS. 3 and 4, the temperature control unit 2 is provided with a temperature control device 18 having an air supply duct 16 having a turbo fan 14 and a duct heater 15 interposed therebetween. A dust collector 25 connected to the intake duct 17 is installed adjacent to the temperature control device 18 to purify the temperature control air taken in.

In this case, the air supply duct 16 of the temperature controller 18
An inlet header 21 for air supply, which is connected via a valve 20 to an air supply pipe 19 connected to a plurality of air supply ports, is provided in a central hollow portion 8a on one end side of the flat plate 8 as shown in FIG. They are connected so as to communicate with each other and fixed by, for example, welding or rivets. An outlet header 22 having a bypass passage 22a is communicated with the hollow portion 8a on the other end side of the flat plate 8 and fixed by welding or rivets. With this structure, the air whose temperature is adjusted to a predetermined temperature, for example, 30 ± 5 ° C. by the duct heater 15 or the cooling unit (not shown) passes through the air supply duct 16 and the inlet header 21 and is provided in the inlet header 21. From the formed long hole-shaped communication hole 21a to the hollow portion 8 of the flat plate 8
The temperature-controlled air flowing into the inside a (see FIG. 6) and flowing inside the hollow portion 8a flows through the bypass passage 22a of the outlet header 22 inside the outside hollow portion 8a and is discharged to the outside. Therefore, the flat plate 8 is adjusted to a predetermined temperature, for example, 30 ± 5 ° C. by the temperature-controlled air, and the surface plate 10 adjacent to the flat plate 8 is also adjusted to the substantially same temperature.

In the injection part 3, a core material (specifically, a mixed composition obtained by mixing a polyol-based stock solution containing a foaming agent and a polyisocyanate-based stock solution) is provided between a pair of assembled surface plates 10. An injection device (not shown) having a nozzle for injecting is installed, and the core material is injected between the pair of surface plates 10 of the plurality of panel molding portions 11 sent to the injection portion 3. .

The curing section 4 has a predetermined temperature, for example, 30 ± 3.
It is installed in a greenhouse (not shown) set at ℃. In this curing part, the temperature of the panel in which the core material is injected in the injection part 3 is lowered by, for example, 30 ± 3 ° C., whereby the core material is foamed and solidified to form the panel. Then, in the disassembling section 5, the panel and the flat plate 8 are disassembled, the panel is transferred, and the flat plate is prepared for the next panel molding. In addition, in the curing section 4, a plurality of panel molding sections 11 assembled as needed are placed (in the drawing, the case of two units is shown).
The dolly is housed.

Next, the operation mode of the method for manufacturing a laminated panel according to the first embodiment will be described. First, a pair of surface plates 10 and a frame material (not shown) are assembled between flat plates 8 that are stacked at appropriate intervals to assemble a set of panel molding parts 11, and the assembled panel molding parts 11 are hoisted. Then, as shown in FIG. 2, a plurality of sets of panel molding portions 11 are assembled (assembly process).

Next, the hollow portion 8a of the assembled flat plate 8
The temperature control air sent from the temperature control device is flown thereinto to adjust the temperature of the flat plate 8 and the surface plate 10 to a predetermined temperature, for example, 30 ± 5 ° C. (temperature control step).

After the temperature of the flat plate 8 and the surface plate 10 is adjusted, the panel molding part 11 is sent to the injection part 3, and in the injection part 3,
The core material is injected between the temperature-controlled surface plates 10 (injection step). After the core material is injected, it is sent to the curing section 4, and in the curing section 4, the core material is foamed and solidified under an atmosphere of a predetermined temperature, for example, 30 ± 3 ° C. to form a panel (curing step).

Then, the panel and the flat plate 8 are sent to the disassembly unit 5 to be disassembled, the panel is transferred to a predetermined place, and the flat plate 8 is prepared for the next assembly of panel molding.

As described above, by incorporating a pair of surface plates 10 between the flat plates 8 that are stacked at appropriate intervals and then adjusting the temperature of the flat plates 8 and 10 to a predetermined temperature,
The temperature of the surface plate 10 before the core material is injected can be kept constant to promote the foaming of the core material and make the foaming uniform.

Second Embodiment The second embodiment is a case where the temperature control of the flat plate 8 is further enhanced, and in addition to the manufacturing method of the first embodiment, the flat plate 8 before being assembled is This is the case where the temperature is controlled.

That is, as shown in FIG. 8, a flat plate standby portion 23 for waiting the flat plate 8 disassembled from the panel after molding.
A temperature controller (not shown) similar to the temperature controller 2 of the first embodiment is installed in the flat plate 8 before being assembled, and temperature control air or a heater plate (Fig. (Not shown)
Temperature control to a predetermined temperature, for example 30 ± 5 ℃ (primary temperature control)
This is the case.

In the manufacturing equipment of the embodiment shown in FIG. 8, the curing unit 4 houses four carriages and the molded carriage is moved between the temperature adjusting unit 2 and the assembling unit 1 by the hoist 24. Since the second embodiment is the same as the first embodiment except that it is transported, the same reference numerals are given to the same portions, and the description thereof will be omitted.

Next, the manufacturing procedure of the panel manufacturing method of the second embodiment will be described with reference to FIG. First, in the flat plate standby unit 23, the flat plate 8 is temperature-controlled to a predetermined temperature, for example, 30 ± 5 ° C. by temperature-adjusting air sent from a temperature adjusting device (not shown) or a heater plate (not shown) (preliminary temperature adjusting step). .

Next, the temperature-controlled flat plates 8 are stacked at appropriate intervals, and a pair of surface plates 10 and a frame member (not shown) are incorporated between the flat plates 8 to form a set of panel forming parts 11. Then, the assembled panel molding portions 11 are stacked on a trolley by a hoist to assemble a plurality of sets of panel molding portions 11 (assembly step).

Next, the hollow portion 8a of the assembled flat plate 8
The temperature control air sent from the temperature control device is flown into the temperature control device to adjust the temperature of the flat plate 8 and the surface plate 10 to a predetermined temperature, for example, 30 ± 5 ° C. (secondary temperature control step).

After the temperature of the flat plate 8 and the surface plate 10 is adjusted, the panel molding part 11 is sent to the injection part 3, and in the injection part 3,
The core material is injected between the temperature-controlled surface plates 10 (injection step). After the core material is injected, it is sent to the curing section 4, and in the curing section 4, the core material is foamed and solidified under an atmosphere of a predetermined temperature, for example, 30 ± 3 ° C. to form a panel (curing step). After the panel molding, the trolley is provided for mounting the panel molding section 11 conveyed by the hoist 24 between the assembly section 1 and the secondary temperature control section 2 and stacked.

On the other hand, the molded panel and the flat plate 8 are sent to the dismantling section 5, the panel and the flat plate 8 are disassembled, the panel is transferred to a predetermined place, and the flat plate 8 is placed in the flat plate standby portion 23. Then, the temperature is adjusted in the same manner as above to prepare for the assembly of the next panel molding.

By controlling the temperature of the flat plate 8 disassembled from the panel molded as described above to a predetermined temperature and preparing for assembly, the temperature of the flat plate 8 before and during assembly can be controlled. In addition to being able to achieve the temperature control, the temperature control after assembly can be made even more quickly and accurately, and the foaming of the core material can be promoted and made uniform.

[0034]

【The invention's effect】

1) According to the method for producing a laminated panel according to claim 1, since the flat plates and the surface plates are temperature-controlled to a predetermined temperature after the pair of surface plates are assembled between the flat plates stacked at appropriate intervals, the core material The temperature of the surface plate before being injected can be kept constant to promote the foaming of the core material and to make the foaming uniform, so that the moldability and the quality can be improved and the yield can be improved.

2) According to the method for manufacturing a laminated panel of claim 2, in addition to the above 1), the flat plate before assembly is temperature-controlled to a predetermined temperature to prepare for assembly. The temperature of the flat plate can be controlled at the same time, and the temperature control after assembly can be made even faster and more accurately.
In addition, the moldability and quality can be further improved, and the yield can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of laminated panel manufacturing equipment according to a method for manufacturing a laminated panel of the present invention.

FIG. 2 is a side view showing a state in which a flat plate and a surface plate according to the present invention are assembled.

FIG. 3 is a schematic plan view showing a temperature control device according to the present invention.

FIG. 4 is a schematic side view of the temperature control device.

FIG. 5 is a plan view (a) and a side view (b) of the flat plate in a state where the temperature is controlled.

FIG. 6 is a cross-sectional perspective view of essential parts showing a state in which the flat plate is temperature-controlled.

FIG. 7 is a side view showing a main part of a flat board.

FIG. 8 is a schematic configuration diagram showing a second embodiment of a laminated panel manufacturing facility according to the laminated panel manufacturing method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Assembly part 2 Temperature control part 3 Injection part 4 Curing part 5 Dismantling part 8 Flat plate 10 Surface plate 11 Panel forming part 18 Temperature control device 23 Flat plate standby part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location B29L 9:00 (72) Inventor Matsui Hikichi 500 Vinegar, Torahime Town, Higashiasai District, Shiga Prefecture Nippon Light Metal Shiga Factory Co., Ltd. (72) Inventor Tokuyasu Murofushi 500 Vinegar, Torahime-cho, Higashiasai-gun, Shiga Nippon Light Metal Co., Ltd. Shiga Factory

Claims (2)

[Claims] 1. A step of assembling a pair of surface plates between flat plates that are stacked at appropriate intervals, a temperature adjusting process of adjusting the temperature of the assembled flat plates and surface plates to a predetermined temperature, and a temperature adjusting process. An injecting step of injecting a foamable core material between the formed surface plates, a curing step of foaming and solidifying the core material at a predetermined temperature to form a laminated panel, and disassembling the flat plate and the formed laminated panel A method for manufacturing a laminated panel, comprising: a disassembling step. 2. An assembling step of incorporating a pair of surface plates between flat plates stacked at appropriate intervals, a temperature adjusting process of adjusting the temperature of the assembled flat plates and surface plates to a predetermined temperature, and a temperature adjusting process. An injecting step of injecting a foamable core material between the formed surface plates, a curing step of foaming and solidifying the core material at a predetermined temperature to form a laminated panel, and disassembling the flat plate and the formed laminated panel A method of manufacturing a laminated panel, comprising: a dismantling step; and a preliminary temperature adjusting step in which the dismantled flat plate is temperature-adjusted to a predetermined temperature to prepare for assembly.