JPH01192539A - Continuous preparation of sandwich panel - 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] [Industrial Application Field] The present invention relates to a continuous manufacturing method for sandwich panels, and more specifically, the present invention relates to a method for continuously manufacturing sandwich panels, and more specifically, to
The present invention relates to a continuous manufacturing method for sandwich panels characterized by foam filling with a fireproof and/or noncombustible foam core material and attaching frame materials to the four sides of a surface plate.

[Prior Art] In general, as shown in FIG. 10, as shown in FIG. 10, this type of sandwich panel is manufactured by forming a sandwich panel with a frame material a disposed around the frame material a and a pair of facing surface plates b. The box body is restrained from the top and bottom and around the periphery with plywood or other holding means C, and the foam core material f is injected using a nozzle e inserted inward through an opening d received at a predetermined location of the frame material a. A batch manufacturing method in which panels are produced one by one by foaming, or as shown in FIG. Q
are brought close to each other from above and below, and a foamable core material f is injected and foamed between the two from a nozzle e, and the elongated laminate in which the core material f has solidified is cut with a saw 1 at a predetermined position to form a panel j.
A continuous foaming method for obtaining the following is known.

[Problems to be Solved by the Invention] However, in the former, that is, the batch-type manufacturing method, assembly and disassembly of mold means such as plywood and holding means C, surface plate, etc.
Since it is necessary to separately set B, frame material a, etc., there is a problem that a large number of man-hours are required and there is also a limit to automation. In addition, although productivity can be improved in the latter method, that is, the continuous foaming method, since the cut portion of panel j is left uncut, there is a risk that not only the dimensional accuracy will be uneven, but also damage may occur during transportation. For example, when a metal surface plate is used, there is an inconvenience in that a burr occurs on the cut surface, and a step to remove the burr is required. In addition, when constructing a structure, it also causes a decrease in fitting accuracy. Furthermore, in the latter manufacturing method, since it is difficult to assemble the frame material on the four sides of the surface plate during the manufacturing process, there is also the problem that a separate step of assembling the frame material is required.

This invention was made in view of the above circumstances, and its purpose is to continuously manufacture a product in which a heat insulating core material is filled between a pair of face plates and frame materials are attached to the four sides of the face plate. It is an object of the present invention to provide a continuous manufacturing method for sandwich panels.

[Means for Solving the Problems] In order to achieve the above object, the continuous manufacturing method of sandwich panels according to the present invention comprises connecting a plurality of face plates having right-angled bent edges on four sides to each other in the same plane. A group of face plates are arranged in a pair, upper and lower, and are continuously and synchronously supplied so that they face each other with their flat parts facing outward, and at this time, connecting parts are formed at the bent edges of the lower adjacent face plates. engaging one of the opposing connecting frame members having the upper surface plate group to feed the surface plate group on the line, and gradually bringing the upper surface plate group closer to each other so as to correspond to each surface plate of the lower surface plate group, The bent edge on the tip side of each upper surface plate is engaged with the above-mentioned connecting frame material located at the front of the line, and the other opposing side frame material is inserted from the side direction immediately in front of the adjacent part of the upper and lower surface plates. The core material is injected between both surface plates at a portion where the upper and lower surface plates are close to each other in parallel with the desired dimensions, and the upper side is injected into one of the connecting frame materials located at the rear of the line. This method is characterized in that the bent edges on the rear end side of the face plates of the face plate group are engaged, and after the core material is foamed and solidified by heating means, the connecting portion of the frame member is cut.

In the present invention, each surface plate of the upper surface plate group does not necessarily have to be connected as long as it is supplied in a connected state and close to the lower surface plate group, for example. They may be supplied while being regulated by a supply guide means, or they may be temporarily connected and supplied using a removable adhesive means such as an adhesive tape.

Further, one of the opposing connecting frame members preset on the lower surface plate group may be of any type as long as it can be cut at the connecting part, but it is easy to cut, and It is preferable that the cut portion be easily post-processed after cutting. In addition, if the other opposing side frame material is supplied immediately before the adjacent parts of the upper and lower surface board groups, it should be supplied to the side of the surface board for each tree, or the frame materials should be connected to each other. It may be connected by adhesive means and continuously supplied to the bent edges of the upper and lower surface plates.

[Effect] The above technical means works as follows.

As mentioned above, by synchronously supplying the upper and lower surface plate groups and bringing them close to each other, with one opposing connecting frame member being locked to the bent edges of the surface plates of the lower surface plate group, The above-mentioned frame material located at the front of the line is attached to the opposing bent edges on the tip side of the upper and lower surface plates, and the other opposing side frame material is attached to the side just before the area where the upper and lower surface plates are adjacent. By supplying the frame members to the other opposing bent edges of the upper and lower surface plates, the frame members are attached.

In addition, core material is injected between both surface plates in the area where the upper and lower surface plates are close to each other in parallel, and a connecting frame material located at the rear of the line is engaged with the opposing bent edges on the rear end side of the upper and lower surface plates. After solidifying the core material using a heating means, the connecting portions of each connecting frame member are sequentially cut, thereby making it possible to continuously manufacture a sandwich panel having frame members on all four sides.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic side sectional view showing the steps of the sandwich panel manufacturing method of the present invention, FIG. 2 is an enlarged view of the main parts of the manufacturing apparatus, and FIGS. 3 and 4 are schematic perspective views of the main parts. has been done.

The sandwich panel manufacturing apparatus includes a surface plate input section 10, a core material injection section 20, a core material foaming and solidification section 30, a cutting section 40, and a panel removal section 50, which are arranged in accordance with the order of the sandwich panel manufacturing process. In this case, a conveying means 12 such as a conveyor is disposed in a portion from the top plate input section 10 to the cutting section 40, and a conveyance means 12 such as a conveyor is provided in the section from the top plate input section 10 to the cutting section 40.
In the portion extending from the core material injection section 20 to the core material injection section 20, there is a guiding conveyance means (
(not shown) is provided. The core material injection part 20 has a nozzle 22 for injecting the core material 6 between the upper and lower surface plates 1a and 1b so that it can swing left and right and can retreat in the opposite direction to the feeding direction of the surface plate groups 2 and 3 as necessary. It is located in In this case, the core material 6 is a foamed core material having heat insulation, fire resistance, and/or nonflammability, such as foamed polyurethane alone or a mixture of foamed polyurethane and aluminum hydroxide. In addition, the temperature of the core material injection part 20 is approximately 35°C.
It is arranged in a preheating furnace 32 with a temperature atmosphere of . on the other hand,
The core material foaming and solidifying section 30 has a structure in which a heater 36 is built into a pair of upper and lower belt conveyors 34 and 34 that are arranged parallel to each other. A rotatable saw 42 that can move up and down toward the surface plate is disposed in the cutting section 40 .

Next, a method for manufacturing a sandwich panel according to the present invention will be explained.

◎First step In the above-mentioned surface plate input section 10, an upper surface plate group 2 in which a plurality of surface plates 1a, 1a... are connected to each other, and a lower surface plate group 2 in which a plurality of surface plates 1b, 1b... are connected to each other When the side surface plate groups 3 are arranged with their flat parts facing outward, the adjacent surface plates 1b of the lower side surface plate group 3
, A connecting portion 5a is attached to the bent edge 1c of one of the opposing sides (the side perpendicular to the supply direction) of the Ib spacer.
The lower surface plate group 3 is fed onto the line of the conveying means 12 by engaging the connecting frame members 5, 5, .

In this case, the short side frame material 5 is made of a material such as vinyl chloride, and its form is, as shown in FIG. Fitting grooves 5 for fitting the bent edges 1c, 1c of the surface plates 1a, 1b into the upper and lower opposing parts of the bases 5b, 5b, respectively.
c, 5d, and the lower fitting grooves 5d, 5d are connected to each other by a connecting portion 5a. In this case, the short side frame material 5 does not necessarily have to have the above-mentioned form,
For example, as shown in FIG. 6, the upper and lower fitting grooves 5c and 5d are connected by connecting portions 5a and 5a, respectively, and as shown in FIG. 7, the connecting portion 5a and the frame base portion 5b.

Notches 5e and 5e are provided at the connecting portion with 5b so that it can be easily cut by a cutting means such as a push-off roller 44, or as shown in FIGS. A configuration in which one or both of the matching grooves 5C is omitted is used.

◎Second step The upper and lower surface plate groups 2゜3 fed into the face plate input section 10 are continuously synchronized and supplied to the core material injection section 20, and the bent edge 1C of the upper surface plate 1a on the leading end side in the feeding direction is the short side frame material 5
The surface plates 1a, lb are engaged with the fitting grooves 5C, etc. of
Side frame materials 7, 7... (hereinafter referred to as long side frame materials) are supplied to engage with the bent edges 1c, 1c of the other opposing sides (direction along the supply direction) of Ru. In this case, the long side frame material is made of vinyl chloride or the like similar to the short side frame material 5 described above.

Further, as shown in FIG. 3, the long side frame materials 7 may be supplied one by one from both sides, or as shown in FIG. Frame material 7, 7
They may be connected to each other and supplied by a guide means (not shown).

◎1 Nozzle 2 is installed on both surface plates 1a and 1b at a location where the upper and lower surface plate groups 2 and 3 are close to each other in parallel with desired dimensions.
Both surface plates 1a are spewed out while swinging from side to side and retracting as necessary.

Core material 6 is injected into 1b, and when both surface plates 1a and Ib become parallel to each other on guide conveyor 14, core material 6 is completely injected between both surface plates 1a and Ib.

In this case, a part of the intermediate portion of the short side frame material 5 may be cut out in advance or this frame material 5 (only on the rear end side) may be divided into two so as not to interfere with the above-mentioned movement of the nozzle 22. You can also do it. Then, the bent edge 1C of the upper surface plate 1a on the rear end side in the supply direction is engaged with the fitting groove 5C of the short side frame material 5, etc., and the core material is supplied to the foam solidification section 30.

O Fourth Step The upper and lower surface plate groups 2.degree. 3 supplied to the core foaming and solidifying section 30 are heated at a temperature of about 60.degree. C. by the heater 36, which is a heating means, so that the core material 6 is foamed and solidified.

◎Fifth step The upper and lower surface plate groups 2.3 filled with the foamed and solidified core material 6 are lowered while rotating at the cutting section 40, and are cut into the connecting section 5a of the short side frame material 5 by the horizontally moving cutting saw 42. is cut to form a sandwich panel 9, which is taken out from the panel take-out section 50.

In this case, it is preferable to select the shape of the short side frame material 5 and the saw 42 in advance so that only the connecting portion 5a can be removed with the saw teeth of the saw 42.

In the above embodiments, the case where the flat portions of the surface plates 1a and 1b are flat has been described, but this is not necessarily limited to manufacturing a sandwich panel having a flat surface plate, and the flat portion may have a corrugated cross section. A sandwich panel can be similarly formed for the top plate.

[Effects of the Invention] As explained above, according to the method for continuously manufacturing sandwich panels of the present invention, core material is injected between the groups of upper and lower face plates that are continuously supplied, and frames are formed on the four sides of the face plates. After attaching the materials, by cutting the connecting portions of the connecting frame materials, a sandwich panel with frame materials attached on all four sides can be manufactured, so that the following effects can be obtained.

1) Since the frame material can be attached to all four sides at the same time as the core material is injected, there is no need to provide a separate process for attaching the frame material, which reduces the number of manufacturing steps and operations, and improves productivity.

2) Since there is no extension of the surface board or exposure of the core material on the cut surface, it is possible to improve the dimensional accuracy of the panel and also to improve the accuracy of fitting during erection.

[Brief explanation of the drawing]

FIG. 1 is a schematic side sectional view showing the manufacturing process of the sandwich panel manufacturing method of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIGS. 3 and 4 are different views of the main parts of the manufacturing process. FIG. 5 is a perspective view showing an example of the frame material of the present invention, FIGS. 6 to 9 are sectional views showing other forms of the frame material, and FIGS. 10 and 11 FIG. 2 is a cross-sectional view showing another method of manufacturing a conventional sandwich panel. Description of symbols (1a)...Upper surface plate (1b)...Lower surface plate (1C)...Folded edge (2)...Upper surface plate group (3)...Lower surface Face plate group (5)...Connection frame material (short side frame material) (5a>...
Connecting part (6)... Core material (7)... Side frame material (long side frame material) (10)...
Surface plate input section (20)... Core material injection section (30)... Core material foaming solidification section (40)... Cutting section (42)... Saw (44)... Push-cut roller patent patent issued. Applicant: Representative of Nippon Light Metal Co., Ltd.
Patent attorney Tomohiro Nakamura (3 others) Figure 6a Figure 8 Figure 7 Figure 9

Claims (1)

[Claims] A group of face plates in which a plurality of face plates with right-angled bent edges on the four sides are connected to each other on the same plane are arranged in pairs above and below, and are continuously synchronized so that they face each other with their flat parts on the outside. At this time, one opposing connecting frame member having a connecting portion at the bent edge of the lower adjacent surface plates is engaged to feed the surface plate group on the line, Gradually bring the upper surface plate group closer to each other so as to correspond to each surface plate of the lower surface plate group, and engage the bent edge on the tip side of each upper surface plate with the connecting frame material located in front of the line, The other opposing side frame material is supplied from the side direction immediately in front of the adjacent portions so as to engage with the bent edges of the upper and lower surface plates, and the upper and lower surface plates are both parallel to each other at desired dimensions and adjacent to each other. A core material is injected between the surface plates, and the bent edge on the rear end side of the surface plate of the upper surface plate group is engaged with one of the connecting frame members located at the rear of the line, and the core material is foamed by heating means. A continuous manufacturing method for sandwich panels, which comprises cutting the connecting portions of the frame material after solidification.