JPS5827102A - Production of reflecting mirror - Google Patents

Abstract

PURPOSE:To obtain a reflecting mirror having high accuracy in flatness and curvature easily by mating the reflection surface of a thin glass sheet mirror and a surface plate of honeycomb construction having through-holes via an adhesive agent and adhering both to one body by the effect of forced suction. CONSTITUTION:The reflection surface 1a of a thin glass sheet mirror 1 (1.0mm. thickness) and a surface plate P having through-holes Pa of honeycomb cores 2a and a surfacing material 2b are disposed via an adhesive agent 3. The plate P is set in a suction chamber A and is sucked forcibly in the direction of arrows, by which the mirror 1 is adhered to one body. Even when the mirror having minor ruggedness is used, the mirror is tightly adhered to the plate P by the effect of forced suction, whereby the reflecting mirror having high accuracy in flatness is produced. The reflecting mirror having high accuracy in curvature is obtained by using a surface plate of a projecting or recessing surface and adhering the thin mirror 1 to one body by forced suction by the above-mentioned method.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is mainly applicable to flat or concave mirrors used to reflect sunlight toward solar collectors such as solar thermal power generation devices, or to be installed at road intersections with poor visibility. It is a mirror with a convex curved surface that is used to inform pedestrians and drivers of blind spots on the road.More specifically, it is a reflective mirror that is made by bonding a highly rigid back-up material to the back of a thin plate mirror. Regarding the manufacturing method.

By using only a thin plate mirror, the reflector described above has a better reflectance than, for example, an ordinary glass mirror with a thickness of about 5 mm.
In addition, compared to glass with a similar reflectance and low iron content, the glass material cost is lower and it has the advantage of being lightweight. There were the following problems:

That is, when bonding and integrating a thin plate mirror and a back-up material, conventionally the thin plate mirror was simply bonded to one surface (flat or curved surface) of the back-up material using an adhesive.

Therefore, in order to improve the flatness and curvature accuracy of the reflective surface, the flatness and curvature accuracy of the adhesive surface of the backup material to the thin mirror must be extremely high. If we consider a honeycomb sandwich panel, which is a typical example of ATP material, it is practically difficult to manufacture such a high-precision panel, and even if it could be manufactured with high precision, it would be difficult to make the entire thin mirror adhere uniformly. However, it is difficult to bond with the adhesive, and the manufacturing cost is high, and the drawback is that high precision cannot be obtained.

In view of these circumstances, the present invention uses a thin plate mirror that has high reflectance, is lightweight, and is inexpensive, while achieving flatness accuracy and
The purpose is to propose a force-determined method that can reliably and easily manufacture products with high curvature accuracy.

The method for producing a reflection according to the present invention is the method described in detail at the beginning, in which the thin plate mirror is applied to a perforated surface plate with its reflective surface positioned on the surface plate side, and the surface plate is The entire thin plate mirror is held in close contact with the surface plate by suction action through the holes formed in the plate, and the back up material is applied to the thin plate mirror with an adhesive applied to the back surface of the thin plate or the back up material. It is characterized by being integrated with adhesive.

In other words, since a thin plate mirror placed against a perforated surface plate is held in close contact with the surface plate by forced suction, and the backup material is integrated with this, the mirror may be slightly uneven or wrinkled. Even if a thin plate mirror is used, and even if the flatness and curvature accuracy of the adhesive surface of the back-up material to the thin plate mirror is somewhat poor, it can still be used as a highly rigid and lightweight back-up material at a relatively low cost. Even when using a honeycomb sandwich panel, the reflective hook f has very high flatness accuracy and curvature accuracy,
It has now become possible to manufacture reliably and efficiently.

The embodiments of the present invention will be described below in detail based on illustrative drawings. Figure @1 and Figure @2 are examples of manufacturing a flat reflecting mirror, and the wall thickness is 0.3 to 2.5 mm. Qgl, preferably 0.7 to 1.0 tone glass thin plate mirror Ill, with a smooth upper surface and a large number of through holes (Ptt)...groups, with a constant t, (p) on which its reflective surface ( 1a) are placed in contact with each other in a downward posture, and a downward suction force is applied to the through holes (Pa) through the suction element jumper IAI attached to the surface plate IP+ and a vacuum pump (not shown). By acting, the thin plate bell Il
+ Even if it has some unevenness or wrinkles, the surface plate fPl
Attach it to the top surface. Adhesive 131 is applied to the back surface of the thin plate mirror il+ while maintaining such suction and adhesion state, and a surface material (2b ), C2b)
The fly cam sandwich panel +21, which is manufactured by polymerizing and pasting , is not loaded and is allowed to stand in its natural state, thereby bonding and integrating both (1) and 121.
A flat reflecting mirror as shown in Figure 3 is manufactured.

4 and 5 show examples of manufacturing concave curved reflecting mirrors, which are manufactured through the same process as the above-mentioned flat reflecting mirror, with the difference being that the surface plate (Pi and the honeycomb sandwich panel 121 is configured in advance to be 1ll-fill.

Figure @6 shows the honeycomb sandwich panel (21 structure 1ft member) in which the surface material (2b), honeycomb core (2N), and surface material (2b) are sequentially placed on a surface plate + Pl. This is an application example of stacking and integrating the materials, and the seventh factor shows the manufacturing procedure of a convex curved reflecting mirror.

In addition, in the method of the present invention, the pack ara "7" used
As the material 121, a honeycomb sandwich panel is most suitable in terms of cost and -tm, but a synthetic resin board, especially fiber-reinforced fj! Any material and form may be used as long as it is highly rigid and lightweight, such as a grease plate.

In addition, as shown in FIG. 8, the present invention can be used to manufacture a large reflecting mirror by arranging a plurality of thin plate guns Ill in parallel and bonding them to a single common back-up material +21. Furthermore, as shown in Fig. 9, '4ITk pieces of relatively small area reflecting mirrors can be used all at once! ! l! Of course, it can also be applied to 2) cases of construction.

Further, the adhesive 13) may be applied to the back-up material (2) side, or may be applied as an initial step before setting on the surface plate.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the method for manufacturing a reflecting mirror according to "Starting from Zero", and FIGS. 1 and 2 are explanatory diagrams of the manufacturing procedure for a flat reflecting mirror, and FIG. 3 is a perspective view of a flat reflecting mirror product. FIGS. 4, 5, and 6 are explanatory diagrams of the manufacturing procedure of the concave curved reflecting mirror, and FIGS. 7 to 9 are explanatory diagrams of corresponding examples, respectively. 111... Thin plate mirror, f21... Backup material, 131... Adhesive, CP)...
...Surface plate. Agent Patent Attorney Osamu Kitamura

Claims (1)

[Claims] ■ Highly rigid back-up material 1 on the back of the thin plate mirror 11).
A method for manufacturing a reflecting mirror formed by bonding and integrating 21,
Place the thin plate @11) on the perforated surface plate IP) on its reflective surface (
llL) is placed on the surface plate fPl side, and a hole (Pal...
The entire thin plate mirror +11 is held in close contact with the surface plate fPl by the suction action through the thin plate mirror 11), and the back up material 121 is applied with adhesive (31) applied to the back surface of the thin plate mirror 11) or the back up material (2). A method for manufacturing a reflecting mirror characterized by applying it to a thin plate mirror Il+ and integrating it. ■ Claim 0 in which the object to be manufactured is a flat reflecting mirror.
2. Method for manufacturing a reflecting mirror described in Section 1. ■Claim No. 0 in which the manufactured object is a curved reflecting mirror
2. Method for manufacturing a reflecting mirror described in Section 1. ■gJ of the reflecting mirror according to any one of claims 0 to 0, wherein the front E backup material +21 is a honeycomb sun German hand panel! Legacy law. ■ The thickness of the thin plate mirror +11 is 0.3 to 2.
The method for manufacturing a reflecting mirror according to any one of claims 0 to 0, wherein the reflecting mirror has a temperature of 0°, preferably 0°7 to 1.0°.