JPH0545455Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a forming device for a sanderch panel using a thin metal plate as the surface material, a synthetic resin foam as the core material, and a flexible sheet-like material as the back material.

[Conventional technology]

For example, a sandwich panel consisting of a thin metal plate as the surface material, polyurethane foam as the core material, and aluminum kraft paper as the back material has been manufactured using a device that forms a large number of mold pieces into an endless band. Furthermore, in an attempt to improve this problem, a device is known in which a belt is wound around a profile, for example, Japanese Patent Publication No. 52-26778.

[Problem that the invention attempts to solve]

When a sandwich panel made of thin metal sheets is manufactured using this type of equipment, the decorative surface has the angular shape of the mold piece,
Since the somewhat rounded edges were in contact, scratches were likely to occur, and the commercial value was significantly reduced. In particular, steel is used for the mold parts because they require strength and heat resistance over a long period of time.
There was a drawback that the paint film was damaged due to play between the mold pieces during movement and friction with the sandwich panel surface material at the exit of the molding device. Further, when a cloth belt or the like is wound around a shape material, there is a disadvantage that it is difficult to synchronize with the shape material and the belt may break.

[Means for solving problems]

In order to eliminate these drawbacks, the present invention has at least implanted a buffer layer on the surface of the mold piece that comes into contact with the surface material made of thin metal plate, finished it with dimensional accuracy during mold forming, and added wear-resistant This paper proposes a molding device for a sandwich panel using a mold member coated with a thin layer of synthetic resin.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the sandwich panel forming apparatus according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view showing a typical example of the above-mentioned apparatus, and 1 is a mold mechanism in which an upper mold member 2 and a lower mold member 3 are made to face each other on a horizontal plane, so as to form a mold as shown in FIGS. 2 a to c, for example. A mold 4 like this is formed.
To explain further, the upper and lower mold members 2 and 3 are formed into an endless band through link plates, rollers, chains, etc. (not shown), and at least, for example, as shown in FIG.
A buffer layer 5 with a thickness of about 1 to 3 mm is provided on the surface of a number of lower mold pieces 3a of the lower mold member 3, which is a mold member in contact with the thin metal plate A of the sanderch panel A as shown in b.
It has a structure in which a thin layer 6 made of a heat-resistant and wear-resistant synthetic resin is coated on top of the bonded material. To explain further, the buffer layer 5 is made of rubber, synthetic rubber, etc., which has cushioning properties and rigidity (rubber penetration hardness of 60 to 60).
It has heat resistance (about 100° C. or more) and can be fixed to the lower mold member 3 made of metal either directly or through an adhesive. In particular, in order to improve the dimensional accuracy of the mold 4, this buffer layer 5 is fixed to the lower mold member 3, and then an endless band is formed to match the dimensions of the mold 4 formed by the upper and lower mold members 2 and 3. It can be polished after construction. In addition, the synthetic resin thin layer 6 has good abrasion resistance, heat resistance, and slipperiness like a soft resin, and does not wear out even when it comes into contact with the metal thin plate A of the sandwich panel A, and has a synergistic effect with the buffer layer 5. Due to this effect, it is possible to form the thin metal plate without causing scratches or the like on the surface thereof. In addition,
The thickness of the synthetic resin thin layer 6 is about 100 microns or less, which hardly changes the dimensions of the mold 4. 7 and 8 are driving wheels, 9 and 10 are driven wheels, 11 and 12 are heating machines, 13 and 14 are auxiliary rollers, 15 is a guide roller, and 16 is a core material feeder that discharges the synthetic resin foam raw material P. The raw material P is one or more of polyurethane resins, polyisocyanurate foam resins, foamable resins, phenolic resins (novolac type, resol type), polyurethane foam resins, and the like.

Next, to explain the operation of the apparatus according to the present invention, it is assumed that the apparatus shown in FIG. 1 is used to manufacture a sandwich panel A shown in FIG. 3b.
First, the lower mold piece 3a of the lower mold member 3 is formed as shown in FIG. 2c. That is, the buffer layer 5 is laminated with synthetic rubber (needle penetration hardness 60°) to a thickness of about 3 mm,
After connecting as the lower mold member 3, it is polished to a size to form the mold 4, and then a thin synthetic resin layer 6 of 100 microns of fluorine resin is coated on the buffer layer 5 almost uniformly and hardened. The upper mold member 2 is a metal slat, the back surface material of the sandwich panel A is aluminum foil laminated asbestos paper, and the core material P' is polyurethane foam.
Therefore, a thin metal plate A (a colored steel plate with a thickness of 0.27 mm and embossed with a thickness of 0.8 mm on the entire surface) was formed into the cross-sectional shape shown in Figure 3b using a roll forming machine, and the gutter was Each component is mixed from the core material feeder 16 into the shaped part, and the unfoamed polyurethane foam raw material is discharged. Next, the back material is laminated on top of it via the guide roller 15, and the material is fed to the mold 4. A continuous band having the cross section shown in FIG. 3b is sent out from the outlet, and this is cut into an arbitrary length by a running cutter (not shown).

Next, when the decorative surface of the thin metal plate A of the sandwich panel A manufactured in this manner was observed with the naked eye, it was found that there were no scratches or black stains caused by rubber, and it was a beautiful decorative surface. Moreover, the dimensional accuracy was within the set range. Furthermore, the cosmetic surface has undergone a salt spray test of 1500 hours (JIS Z 2371).
As a result, no blistering, rust, or whitening phenomenon was observed. On the other hand, when the lower mold member 3 was made of metal as in the past, there were many scratches on the decorative surface of the metal thin plate A, and the corrosion resistance was poor even though a salt spray test was not performed. Furthermore, when rubber was simply used as the buffer layer 5, black stains adhered to the decorative surface and had to be wiped off. Furthermore, as a secondary effect, the pressure on the upper and lower mold members 2 and 3 due to the foaming pressure of the core material P' was somewhat reduced, and pitching of the upper and lower mold members 2 and 3 was eliminated.

What has been described above is only one embodiment of the sanderch panel forming apparatus according to the present invention, and the upper and lower mold members 2 and 3 can also be formed as shown in FIGS. 4a and 4b. Further, although not shown, the upper die member 2 may be constructed of a steel belt, a roller, or the like.

[Effect of idea]

As described above, according to the sanderch panel forming apparatus according to the present invention, there are no scratches or scratches caused by the mold member on the surface material of the sanderch panel made of a thin metal plate.
Can eliminate dirt. The dimensional accuracy of the mold can be improved. It is possible to suppress pitting of the device, prevent rattling, and extend the life of the device. The foaming pressure of the foam material serving as the core material can be reduced somewhat. It has the following characteristics.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of a forming device for a sanderch panel according to the present invention, Figs. 2 a to c are explanatory diagrams showing typical examples of molds, and Figs. Explanatory diagram showing an example, Figure 4 a, b
FIG. 3 is an explanatory diagram showing another embodiment. 1 ...Mold mechanism, 2...Upper mold member, 3...Lower mold member, 3a...Lower mold piece, 4...Mold, 5...Buffer layer, 6...Synthetic resin thin layer.

Claims (1)

[Scope of utility model registration request] Two endless band mold members are arranged above and below that face each other at the entrance and open at the exit, and these mold members face each other in order to form a mold that moves in one direction on a substantially horizontal plane. In an apparatus for forming a foam therein, a buffer layer with a thickness of about 1 to 3 mm is applied to the facing surfaces of the upper and lower mold members, and the surfaces are polished to form the mold dimensions with high precision. A forming device for a sanderch panel, characterized in that a thin layer of heat-resistant and abrasion-resistant synthetic resin is coated thereon.