JPS62134252A - Method and device for forming laminate - 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 A. Field of Industrial Application The present invention relates to a method and apparatus for forming laminated glass or other laminates containing brittle or non-brittle materials or reinforced materials.

BACKGROUND OF THE INVENTION Prior Art and Problems In the manufacture of laminated glass, a curable resin is placed between two sheets of glass or other material.

One method for manufacturing such glass laminates is described in US Pat. No. 4,234,533 (Langlands). In this method, two sheets are held so that their two corresponding sides form an angle, the lower sheet is coated with resin, and the upper sheet is lowered to reduce the angle. This forces the resin towards the free edge. Thus, resin and air are then forced out during the lower stage.

In another method, described in European Patent Application No. 0.156.719 (Langlands), two sheets are spaced apart from each other and sealed around the edges with a breathable but liquid-impermeable seal. If the resin is then properly pressurized, the air between the sheets is forced through the seal and the resin fills the space between the sheets. Further pressure is applied to either side of the laminate thus formed to tighten the bond and to force out the last remaining air.
The laminate is compressed to a predetermined thickness.

The glass laminating apparatus and method described in Color Circle Patent No. 2,384,404 deposits resin on a flat bottom sheet and bends the top sheet outward and lowers it onto the bottom sheet to form the laminate. Form. The resin used in this lamination method is not flowable, so the resin remains in clumps on the flat bottom sheet.

Important to the quality of laminated glass is that the resin is applied evenly. Otherwise, there will be weak spots, which will not only result in defective products, but also lead to dangerous situations.

OBJECT OF THE INVENTION An object of the present invention is to provide a method for forming a laminate that makes the thickness of the resin uniform.

According to one feature of the invention, a method of laminating substantially rigid flat sheets comprises supporting a first sheet so as to create a concave bend in a central area of the first sheet, the concave bend Adhering a predetermined amount of a curable resin composite within the first sheet, installing a second sheet on top of the first sheet, and making the edges of both sheets impervious to liquid before or after installing the second sheet. (1) placing the first and second sheets in a flat position and applying sufficient pressure to cause the resin and air in the gap between the two sheets to flow outward; to both said sheets.

Preferably the method comprises placing the first and second sheets in a flat position in a vacuum chamber and at least partially evacuating the chamber while allowing the resin to flow within the gap between the sheets. Including the stages of things. It also includes the additional step of forming a concave bend in the first sheet by applying downward pressure to the central region of the first sheet until a dish shape is created.

The method also includes installing a liquid-impermeable and breathable tape on either of the first and second sheets, installing the second sheet on the first sheet, and applying pressure to a central area of the second sheet to bring the sheet into contact with the resin.

According to another feature of the invention, a method of forming a laminate comprises:
placing the first sheet across spaced apart ridges so as to form the first sheet into a dish shape; placing a resin bonded article within the dish shape; curving the second sheet; and applying a convex curved surface of the second sheet to the resin bonded article to cause the resin bonded article to flow outwardly due to the surface tension of the resin bonded article.

Preferably the method includes the step of applying the second sheet to the composite mass, forming a meniscus with the composite mass.

According to still further features of the invention, substantially f & +J
The device for laminating flat sheets of Fl is a mutually tmrv supported device 1ff for receiving the first sheet.
N a device for forming a concave bend in the central area of the first sheet; a device for placing a second sheet on top of the first sheet and moving the sheets; and a device for applying pressure to both sheets. Equipped with.

Preferably, the first sheet support device comprises a table top having raised sides on which the sheet rests. The concave portion of the first sheet is preferably formed by applying downward pressure to the sheet.

Preferably, the device d for installing the second sheet on the M1 sheet is composed of a gun L-ley having a lifting mechanism,
The device that applies pressure to both sheets is comprised of a press.

2. EXAMPLE As shown in the drawings, the apparatus 10 of the invention for laminating glass comprises a gantry 12 that moves over two working stations 14, 16. Also trolley 1
8 operates on the work station 16.

The gantry 12 has a rectangular frame having legs 20 spaced apart from each other, and casters 22 are attached to the ends of the legs so that the gantry 12 slides on rails 24 laid on the floor. The gantry 12 has a switch 26, from which a frame 28 is suspended, and this frame has a plurality of suction holes A.
The suction caps have seven suction caps 30 connected by hoses 32 to a vacuum source (not shown).

Work station 14 has a rectangular top 34 with raised sides l1fiλ. The suction 4 has a weight 38 from the tube 36 and is connected to a vacuum source (not shown).

When a device such as that described above is used, a sheet of glass 40 is picked up from the stack 42 by the gun 1-12. Before this pick-up, the glass surface is thoroughly cleaned with a suitable solvent. Frame 28 is lowered onto glass sheet 40 and a vacuum source is activated to attract the glass sheet to the frame. The gantry is then moved to the work station 14 where the glass sheet is placed onto the side of the frame 34. The suction key 36 is attached to the bottom of the glass sheet 40, and the vacuum source is turned on again. - A downward pressure is applied to the weights 38, which causes the central area of the glass sheet 40 to become dished as shown in FIG. A metered amount of a suitable resin 44 in liquid form is poured into this dish. A breathable and liquid-impermeable tee 146 is attached to the periphery of the glass sheet 40. Another sheet of glass 48
is placed on the abutment surface of the glass sheet 40 using the gantry 12. Qi 746 is those glass sheets 40.4
It acts as a subeza for 8 hours. way on sheet 48]
- The member 5o/fi is placed so that the sheet 48 is dished out and in contact with the resin 44.

When the convex lower surface of glass sheet 48 contacts resin 44, a meniscus is created. The surface tension of the resin 44 is broken and the resin spreads into the area between the sheets 40, 48.

The vacuum supply to the suction cap 36 is turned off, which causes the stack of sheets 40, 48 to flatten out as shown in FIG. This stack is transferred by gantry 12 to work station 16.

Work station 16 is neofrene sponge tape 5
4, on which a platen 56 is placed. The peripheral area between the top 52 and the platen 56 forms a vacuum chamber 58 that is connected to the conduit 6.
Connects to the vacuum source at o.

Between the top portion 52 and the platen 56, a subena 62 is placed between i and Q.
effectively determining the thickness of the laminate to be deposited and formed.

The platen 56 is connected to the gear 17 running on the rail 24.
6 is mounted on the frame 64 of the trolley 18. Brackets 68 are fixed to the platens 56, and these platens are connected to the cover plate 1-72 by bolts 70 passed through the frame 64. platen 56
Upper and lower air bags 74, 76 are fixed on both sides of the frame 64 between the cover plate 1-72 and the cover plate 1-72. These air bags 74, 76 are connected to a source of pressurized air (not shown).

A stack formed of sheets 40, 48 is placed on the bottom of work station 16 and trolley 18 is positioned in the soil of work station 16. bag 74
platen 56 is lowered by deflating the tape 54. and inflating the bag 76. sit on the seat. In that way, even pressure is applied to the laminate. At the same time, air from chamber 58 is exhausted through conduit 60. Therefore, the air between the sheets 40.48 is Q746
Because the resin 44 is discharged through the sheets, the resin 44
spreads quickly. After the resin 44 has been spread evenly over the area between the sheets 40, 48, the laminate is removed from the work station 16 and the resin is cured. It is known that laminates made in this manner are completely free of air bubbles in the resin between the glass sheets.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of an M4-layer device according to the invention, FIGS. The figure is a schematic cross-sectional view of the second work station and the process steps therein. 10...Glass laminating device, 12...Gan I. Lee,
14.16...Working station, 18...1-Rolly, 34.52...Working station top, 36.
...Adsorption 4 ni Tsubu, 38...Weight, 40.48
...Glass sheet, 44...Resin, 46...Breathable and liquid-impermeable tape, 50...Weight, 56...
・Platen, 58... Vacuum chamber, 62... Sube,
74.76...Air bag.

Claims (5)

[Claims] (1) A method of laminating substantially rigid flat sheets, comprising: supporting a first sheet so as to create a concave curve in a central region of the first sheet; attaching a resin composite, placing a second sheet on the first sheet, and sealing the edges of both sheets in a liquid-impermeable and breathable state before or after installing the second sheet; placing the first and second sheets in a flat position;
and applying sufficient pressure to both sheets to cause the resin and air in the gap between the sheets to flow outwardly. (2) In the method according to claim 1, a liquid-impermeable and breathable tape is installed on either the first sheet or the second sheet, and the first sheet and the tape superimposed thereon are provided. A method comprising the steps of placing a second sheet in a vacuum chamber and applying pressure to a central area of the second sheet to bring the second sheet into contact with the resin. (3) In the method of forming a laminate, the first sheet is placed over mutually spaced ridges so as to be dish-shaped, and the resin composite is placed in the dish-shaped part. placing a convex curved surface of the second sheet onto the resin composite article to cause the resin composite article to flow outwardly due to the surface tension of the resin composite article. A method involving the stages of donning. (4) In an apparatus for laminating flat sheets of substantially rigid material, spaced support means for receiving a first sheet, for forming a concave bend in the central area of the first sheet; A laminating apparatus comprising: an apparatus for placing a second sheet on the first sheet and moving the sheets; and an apparatus for applying pressure to both sheets. (5) The laminating apparatus according to claim 4, wherein the first sheet supporting device is constituted by a table top having a sealing element and a sheet placing device, and the second sheet is placed on the first sheet.
A laminating device, wherein the device for installing the sheets is constituted by a gantry having a lifting mechanism, and the device for applying pressure on both sheets is constituted by a press having an inflatable air bag.