JPH0530771B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method and apparatus for simultaneously bending and forming two sheets of laminated blank glass for laminated glass in a heating furnace. The present invention relates to a method for bending and forming laminated blank glass for laminated glass that is optimal for deeply bending the side portions, and improvements to the device.

[Prior Art] Generally, laminated glass is made by laminating two pieces of laminated glass with a plastic interlayer film such as a polyvinyl butyral film, and is widely used for safety reasons, especially as a windshield for automobiles. It's being used.

By the way, this type of laminated glass is usually required to have a curved shape for reasons of automobile design, so for the two sheets of laminated raw glass for laminated glass, it is possible to suitably bend and form flat sheets. It becomes necessary. At this time, if both laminated glass sheets are molded separately, the curved surface shapes of both laminated glass sheets will be slightly different, and when laminating them with an interlayer interposed between both glasses, the two laminated glass sheets will be There are drawbacks such as failure to bond through an interlayer film, generation of bubbles on the bonded surface, or generation of bubbles on the bonded surface of the laminated glass during use, or peeling. For this reason, conventionally, when manufacturing laminated glass, a method has been adopted in which two sheets of laminated glass are stacked and bent at the same time.

The conventional method for bending and forming laminated blank glass for laminated glass is to construct a bending die that corresponds to the bending surface of the laminated glass, and to place two pieces of laminated blank glass for laminated glass on top of this bending die. The bending mold is carried into a heating furnace in the state where it is placed, and the double laminated blank glass is heated to its glass softening temperature, and as both glasses soften, the double laminated blank glass is moved along the bending surface of the bending mold. It is known that the product is bent under its own weight (Special Publication Act 1977
(See Publication No. 10332).

In such a method, if it is necessary to deep bend the side part of the laminated glass, a ring-shaped fixed split mold having a bending surface corresponding to the middle curved part of the laminated glass and the side part of the laminated glass are used. a ring-shaped movable split mold having a bending surface corresponding to the deep bending part of the part, and provided on both sides or one side of the fixed split mold so as to be movable under its own weight in a direction connected to the fixed split mold; After configuring a bending mold and placing two flat sheets of raw glass on top of each other on the bending mold with the movable split mold expanded, the raw glass is carried into a heating furnace and heated, A self-weight bending method has already been provided in which the movable split mold is moved in a direction continuous with the fixed split mold as the two glasses soften, and the sides of both glasses are deeply bent by the movable split mold.

[Problems to be Solved by the Invention] However, in such a conventional method of bending and forming blank glass for laminated glass, when deep bending the sides of double laminated blank glass for laminated glass, it is necessary to The side parts of both blank glass sheets are forcibly bent using a movable split mold that moves, but when increasing the degree of deep bending of the side parts of laminated glass, it is necessary to Although the peripheral edge shape can be formed into a shape that follows the movable split mold, the surface shape of the curved portion of both base glasses, excluding the periphery of the deep bending part, depends on the degree of deformation of the softened base glass to create the desired curvature surface. A situation that cannot be followed arises,
A problem arises in that the deeply bent portions of both base glasses become insufficiently formed. It is also possible to locally heat the part to be bent deeply to make it easier to bend, but even this is still insufficient.

In order to solve this problem, a press method in which a glass plate is sandwiched between a concave mold and a convex mold may be applied as a method to form the surface shape accurately, but it is difficult to form laminated glass. In some cases, two sheets of laminated blank glass must be molded at the same time, so it is necessary to accurately position and hold the two sheets of laminated blank glass during molding. However, even when attempting to hold two pieces of laminated blank glass using known methods such as hanging or suction, it was not possible to accurately position and hold both pieces of laminated blank glass, and in the end, the above pressing method was not used. The problem was that it could not be applied as is.

Or, to solve such problems,
In order to make it easier to bend the sides of the glass plates, prepare two pieces of laminated blank glass that are larger than the design dimensions of the laminated glass you are trying to obtain, and stack these two oversized pieces of laminated blank glass and bend them at the same time. There is also an oversize processing method in which the glass is processed to obtain the desired molded shape, and then the peripheral portion is cut to obtain two pieces of laminated blank glass with the desired design dimensions, but this requires a cutting process after bending. However, the drawback was that it was time-consuming and costly.

The present invention has been made in view of the above problems, and provides a method and an apparatus for bending a laminated blank glass for laminated glass, which can reliably deep bend the side portion of the laminated glass. This is the issue.

[Means for Solving the Problems] That is, the method of bending and forming laminated blank glass for laminated glass of the present invention that achieves the above-mentioned problems involves stacking two sheets of laminated blank glass for laminated glass and bending the sides of both laminated blank glasses. When simultaneously bending and forming a part to be deeply bent, two sheets of laminated raw glass are placed on a bending die equipped with a movable split die and a fixed split die having the desired forming surface, and placed on this bending die. The two sheets of laminated raw glass are heated to the bending temperature of the glass in the heating and bending processing stage in a heating furnace, and the two sheets of laminated raw glass are bent by their own weight into a shape that roughly follows the bending mold. The movable split mold is then fixed to the fixed split mold, and the deeply bent portion of the laminated blank glass is assisted from above the two stacked laminated blank glasses while it is placed on the bending die. The present invention relates to a method for bending and forming laminated blank glass for laminated glass, which is characterized in that two sheets of laminated blank glass are simultaneously press-molded by pressing with a press member.

Further, the apparatus for realizing the above-mentioned method for bending and forming raw glass for laminated glass is a laminated glass that simultaneously bends and forms two sheets of laminated glass for laminated glass so that the sides of both laminated glass sheets are deeply bent. A bending and forming device for laminated blank glass for use, which comprises a fixed split mold having a bending surface corresponding to the intermediate curved part to be formed of the laminated blank glass, and a movable split mold having a bending surface corresponding to the deep bending part to be formed. an auxiliary press member provided above the bending die and corresponding to a deep lateral bending portion of the laminated blank glass to be formed; A bending and forming apparatus for laminated blank glass for laminated glass, characterized by comprising a lifting mechanism and a fixing means for fixing the movable split die to the fixed split die when pressing the laminated blank glass.

In such technical means, at least the configuration of the heating and bending furnace when bending two sheets of laminated blank glass for laminated glass is as follows:
It includes a heating and bending processing stage in which the laminated blank glass to be formed is heated to the softening temperature of the glass, and a press processing stage in which the sides of the heated and softened laminated blank glass are deep bent and formed using an auxiliary press member. The design may be changed as appropriate if the In this case, from the viewpoint of maintaining good bending formability, in the heating bending processing stage, the sides of the laminated blank glass to be deep bent are locally heated to a higher temperature than other parts. It is preferable to do so. For such local heating, it is preferable to arrange a local heater close to the upper side, the lower side, or the upper and lower sides of the portion of the two laminated blank glass sheets to be deep bent.

In addition, as the means for transporting the two sheets of laminated blank glass, if the bending mold can be transported in the heating/bending furnace, the carriage may be moved along a predetermined circulation route or advance/retreat route. Alternatively, the design may be changed as appropriate, such as by using a continuous conveyor made of heat-resistant conveyor rolls, conveyor belts, etc. In this case, regarding the conveyance means, since the relative positional relationship between the bending mold on the press processing stage and the auxiliary press means equipped with the auxiliary press member must be accurate, mechanical positioning means may be attached or It is necessary to control the positioning of the conveying means using a control system.

Furthermore, the above-mentioned auxiliary press means does not interfere with the bending die when the bending die reaches the press processing stage, and presses the bending die set at the set position on the press processing stage to form the laminated blank glass. The design may be changed as appropriate as long as the side portion of the laminated blank glass is pressed by the auxiliary press member from a direction substantially perpendicular to the bending surface corresponding to the curved portion. The installation location of the auxiliary press member is determined from the viewpoint of making it easy to accurately determine the relative positional relationship with the bending die, and considering the thermal efficiency of the heat treatment stage and the durability of the auxiliary press member support mechanism. Preferably, it is placed at a suitable location on the press stage above the bending die. Furthermore, the shape of the auxiliary press member may be pipe-shaped or may be formed to correspond to the entire deep bending part of the laminated glass, but at least it can be formed only at the heating and bending processing stage. It is preferable to form it corresponding to a deep bend with a large curvature where forming is likely to be incomplete. Further, when bending the deeply bent portion into a shape with partially different curvatures, an auxiliary press member having a press surface having a different curvature according to the bent shape is used.

[Operation] According to the technical means as described above, two pieces of laminated blank glass for laminated glass placed on a split type bending mold having a movable split mold and a fixed split mold,
After being heated to the glass softening temperature in the heating and bending processing stage in the heating and bending furnace and temporarily formed into a shape that roughly follows the bending mold, incomplete forming of the two temporarily formed laminated blank glass sheets is performed. For deep bending of the laminated blank glass, the movable split mold is fixed to the fixed split mold in a press processing stage located after the heating and bending processing stage in the heating and bending furnace. After that, it is partially press-formed along the deep bending portion of the bending die.

[Example] Hereinafter, a method and an apparatus for bending a laminated blank glass for laminated glass according to the present invention will be described in detail based on an example shown in the accompanying drawings.

Embodiment 1 FIG. 1 shows an application of the present invention to a bending system for laminated blank glass for laminated glass, which deep bends both sides of the laminated blank glass for laminated glass.

In the same figure, a pair of laminated blank glasses for laminated glass are stacked on a bending die 10 and are moved by a trolley 26 via a chain conveyor (not shown).
After passing through a heating/bending processing stage ST1 in the heating/bending furnace 2 and a press processing stage ST2 together with the bending die 10 by a conveying means 25 consisting of
It is now being transported to ST3. and,
In the heating/bending processing stage ST1, the laminated blank glass 1 is heated to a glass softening temperature (550 to 650°C) by the heater 3 in the heating furnace 2, and is softened, and is then bent approximately along the forming surface of the bending mold 10. Temporarily formed,
In press processing stage ST2, auxiliary press means 3
0, the incompletely formed parts of the deeply bent parts of the laminated blank glass 1 are partially press-formed, and in the cooling treatment stage ST3, the press-formed laminated blank glass 1 is pressed to prevent undesirable distortion from occurring. The laminated blank glass 1 is gradually cooled while being moved on the bending die 10 at a controlled cooling rate for a predetermined period of time, and then the two formed laminated blank glasses 1 are taken out from the cooling treatment stage ST3 and left to cool. It's becoming like that.

The bending mold for self-weight bending on which two sheets of laminated blank glass are placed is made of a heat-resistant material that can withstand the forming temperature (580 to 700℃) of glass sheets in the heating and bending furnace. A type having a bending surface corresponding to the intermediate curved portion and a bending surface corresponding to the deep bending portion to be formed can be preferably used. The structure of such a bending mold may be either a planar shape that is compatible with the laminated raw glass or a ring-shaped shape that can support the periphery of the laminated raw glass, but in order to maintain the smooth surface of the laminated raw glass. A ring-shaped one is preferable in that it minimizes the contact area between the surface of the laminated blank glass and the bending die. In the present invention, the automatic processing bending die is of a split type that is divided into a fixed split mold and a movable split mold.

The split-type bending die illustrated in FIG. 2 is placed on a carriage 26 of the conveyance means, and the bending die corresponds to the central curved portion of the deep-bent laminated blank glass 1 excluding both sides. A ring-shaped fixed split mold 11 having a ring-shaped fixed split mold 11a, and a bending surface 12a that is movably provided on both sides of the fixed split mold 11 and corresponds to the deep bending part of the laminated blank glass 1, and this bending surface 12a A ring-shaped movable split mold 12 is connected to the bending surface 11a of the fixed split mold 11 at the set position.
It consists of The fixed split mold 11 is fixed on the cart 26 via the support 13, while the widthwise both sides of the movable split mold 12 are attached to the tip end of the support 15 erected on the fixed bracket 14 on the cart 26. is swingably supported via a pivot 16.
Furthermore, the movable split mold 1 is attached to the support portion of the movable split mold 12.
A balance weight 17 is attached via a moment arm 18 so that the balance weight 17 is biased toward the set position where the mold 2 is connected to the fixed split mold 11. In addition, the second
In the figure, a shows the flat laminated blank glass placed on the bending mold before heating the laminated blank glass, and b in Figure 2 shows the laminated blank glass after the bending process is completed. be. Further, FIG. 2c is a schematic plan view for explaining the split state of this bending die. Furthermore, as long as the above-mentioned movable split mold moves in the direction connected to the fixed split mold by its own weight and stops at the set position connected to the fixed split mold, the design may be changed as appropriate, and the movable split mold can be moved to the set position of the fixed mold. The return force can be adjusted by the components and weights of the movable split mold itself.

In addition, on the outside of the side edge of the laminated blank glass on the periphery of the movable split mold corresponding to the deep bending part to be formed of the laminated blank glass of the bending die, there is a part protruding from the end of the bending die as shown in Figures 2 and 12. A taper ring 4 having a taper angle corresponding to the curved shape of the periphery of the laminated blank glass.
It is preferable to add 0. Alternatively, a structure may be adopted in which the peripheral edge of the mold itself protrudes from the end. This taper ring 40 or the contact surface of the protrusion on the periphery of the mold with the lower surface of the end of the laminated blank glass has a forming surface that matches the design shape of the desired laminated glass, and during press molding, the end of the laminated blank glass The shape is such that it supports the part so that it can be molded into a desired shape. Therefore, when temporarily forming two pieces of laminated blank glass by bending them under their own weight on a bending die, only the ends 90 and 91 of the laminated blank glass come into contact with the support surface of the taper ring, as shown in FIG. The lower surface of the plate glass 91 and the molding surface 42 of the tapered ring 40
The forming surface 43 of the bending die 12 and the taper ring 4 during temporary forming are supported with a gap between them.
It is possible to prevent mold marks from forming inside the edge of the lower surface of the laminated blank glass due to contact with the molding surface 42 of 0. Thereafter, by pressing the peripheral part of the laminated blank glass by the auxiliary press member 52, a desired shape is obtained in which the peripheral part matches the molding surface 42 of the tapered ring 40 and the molding surface 43 of the end of the bending mold 12. The tapered ring 40 or the protruding portion on the periphery of the mold may be provided in the necessary deep bending portion of the bending mold, and does not necessarily need to be provided on the entire side of the bending mold.

When using such a split mold type bending die, one feature of the present invention is to attach a device to prevent the movable split mold from jumping up in the deep bending part during press forming. shall be.

As the bounce-up prevention device, the design may be changed as appropriate as long as it can fix the movable split die 12 of the bending die 10 at the set position on the press processing stage within a range that does not interfere with the pressing operation by the auxiliary press means 30. However, the location and number of clamps can be selected as appropriate.

The example shown in FIGS. 3 and 4 shows an example of a press forming apparatus after temporary forming of laminated blank glass, which is equipped with a device to prevent the movable split mold from jumping up. When the auxiliary press member 52 press-forms the laminated blank glass 53 on the peripheral part, the movable split die 51 presses the two laminated blank glass 53.
A movable split-type locking member 54 is provided to secure the desired bent shape at an optimal position and prevent it from jumping up. This locking member 5
4 is connected to a connecting arm 55. This connecting arm 55 is connected to a bracket 57 attached to a truck 56 by a hinge 58, and an engaging portion 59 is provided at the other end of this connecting arm 55. ing. Then, when the auxiliary press means 60 descends,
The push-down member 60 of the engagement portion 59 provided in the auxiliary press means 52 descends, and the push-down member 60 abuts the engagement portion 59 before the auxiliary press member 52 contacts the deeply bent portion of the laminated blank glass 53. pushes down the engaging portion 59 of the connecting arm 55, and the hinge 5
The locking member 54 of the connecting arm 55 rises around point 8, and the movable split die 51 is fixed, so that the movable split die 51 does not move when the auxiliary press member 52 presses the deep bent portion of the laminated blank glass. be made into After the auxiliary press member 52 finishes pressing the deep bending portion, as the auxiliary press means 60 rises, the engaging portion 59 of the connecting arm 55 and the push-down member 6
0 is released, the locking member 54 and the movable split mold 51 are disengaged, and the movable split mold is released from being fixed.

Further, as shown in FIG. 3, the auxiliary pressing means presses an auxiliary pressing member 52 at a desired position above the portion corresponding to the deep bending portion 62 of the laminated blank glass 53 of the bending die 50.
The auxiliary press member 52 is attached to a press base 63 via a support arm 64. This press base 63 is moved up and down by a press cylinder 65, and when the press cylinder 65 descends, the deeply bent portion of the laminated blank glass 53 is press-formed, and as the press cylinder 65 rises, the press is released. It's starting to look like this. When the auxiliary press member 52 presses the deep bent portion 62 of the laminated blank glass 53, the auxiliary press member 52 and the laminated blank glass 53 are brought into contact so that wrinkles, scratches, and press marks on the laminated blank glass due to pressing are reduced. It is more preferable to press in a direction normal to the part.

The above-mentioned auxiliary press member is made of glass fiber, silica fiber, or other ceramic fiber that covers the contact surface of the auxiliary press member with the glass to prevent press marks from forming on the laminated base glass when the laminated base glass is press-formed. , it is preferable to provide a heat insulating cloth 70 such as metal fiber.

In the example shown in FIGS. 6 to 8, two laminated blank glass sheets 80 are placed on a split-type bending mold 81, and when the laminated blank glass sheets 80 are bent by self-weight bending, the laminated blank glass sheets 80 are This is an example in which a local heating heater 83 is provided above the laminated blank glass 80 at a portion corresponding to the deep bending portion so that the bending process of the deep bending portion 82 becomes easier. Using this local heating heater, the deeply bent part of the laminated blank glass 80 is heated to a higher temperature than other parts, for example, 10°C to 100°C.
By increasing the temperature by approximately ℃, it becomes easier to bend the deep bent portion using its own weight. Such local heating heaters may be placed above or below the two stacked laminated glass sheets, or may be placed both above and below the laminated glass sheets. The shape of the local heating heater is appropriately determined depending on the desired shape of the deep bending part to be bent, and may be straight in the length direction, or the bending line of the deep bending part may be curved. It may be curved so as to form a shape, or it may be a more complicated shape. The examples shown in FIGS. 6 and 7 are examples of the latter.

In addition, when heating a laminated base glass locally using a local heating heater, if you want to prevent the local heating from reaching other parts, use a heat-insulating member such as a heat-resistant heat-insulating curtain or heat-insulating plate as shown in Figure 8. It is also possible to place the heater 84 at a desired location to cut off undesirable radiant heat from the local heater 83.

In the method of the present invention, a laminated blank glass is press-formed to be bent and formed as shown in FIG. 11, and a colored ceramic color ink is printed on the periphery including the part to be deeply bent (including the bending line 94),
It is also possible to form colored bands. In this way, colored ceramic color ink is printed on the press-molded area and baked onto the surface of the laminated base glass in the heating process before press-molding.
Even if press marks or scratches occur during pressing on the baked colored band of the colored ceramic color ink or on the periphery of the laminated base glass, the printed colored band of the colored ceramic color ink will make the press marks and scratches less noticeable, improving the appearance. optical defects can be hidden.

In addition, as shown in FIG.
When colored ceramic color ink is printed on the upper surface of the deep bent part of 0 to form a colored band 92, when the colored ceramic color ink is pressed,
It adheres to the heat-resistant cloth covering the press surface of the auxiliary press member, reducing the life of the heat-resistant cloth, or causing press marks on the surface of the colored band where the colored ceramic color ink is baked. In order to prevent this, a heat-resistant mold release agent is printed on the printed surface of the colored ceramic color ink to form a mold release agent layer 93.
It is possible to improve the mold releasability between the baked colored band of the colored ceramic color ink and the heat-resistant cloth of the auxiliary press member during press molding. Examples of such heat-resistant mold release agents include boron nitride and carbon.

Alternatively, as an improvement to extend the life of the heat-resistant cloth covered with the auxiliary press member as described above, or to improve the pressing surface of the colored band baked with colored ceramic color ink, two overlapping sheets may be used as shown in Figure 10. After preforming the laminated blank glass sheets 90 and 91 by bending under their own weight, the upper and lower laminated blank glass sheets 90 and 91 are reversed prior to press molding, and the laminated blank glass sheets on which colored bands 92 are baked with colored ceramic color ink are formed. 90 on the lower side, and the peripheral part of the laminated blank glass 91 on which the colored band is not applied can be press-molded to prevent the colored ceramic color ink from adhering to the heat-resistant cloth.

[Effects of the Invention] As explained above, according to the laminated glass bending method and apparatus of the present invention, a glass plate for laminated glass is heated to the glass softening temperature and fixed to a movable split mold by the self-weight bending method. After temporarily forming into a shape that roughly follows the bending mold of the split mold type having a split mold, the movable split mold is fixed to the fixed split mold and incompletely formed parts of the laminated blank glass are partially pressed by pressing. Since the side part of the laminated glass is straightened, even if the side part of the laminated glass is deeply bent, the movable split mold does not spring up during press forming, and the side part of the laminated glass can be reliably bent deeply. It can be molded, increasing the degree of freedom in shaping the laminated base glass.

Further, in one aspect of the present invention, the end portions on both sides of the two stacked laminated glass sheets placed on the bending die are further received by a tapered ring die provided adjacent to the outside of the bending die. In this case, the deeply bent part of two stacked laminated glass sheets is heated more locally than other parts by a local heating heater, bent under its own weight, and then the locally heated part is pressed from above with an auxiliary press member. By doing so, the side edges of the two laminated glass sheets can be bent to have a desired radius of curvature. For example, after self-weight bending,
If press forming is not used, it is almost the limit to bend the side edges of two laminated glass sheets with a radius of curvature of 600 to 10,000 mmR, but as described above, press forming the rear side edges is possible. 80~
It has become possible to perform bending processes with a radius of curvature of approximately 200mmR. In addition, in order to support the side terminals of two pieces of laminated blank glass with the taper ring die, if the two pieces of laminated blank glass are made to protrude from the edge of the bending die by about 4 mm to 10 mm as in the conventional case. It is possible to eliminate bending die marks that occur at the contact portion of the lower end of the laminated blank glass with the molding surface of the ring of the bending die.

Further, according to the present invention, when deep bending laminated blank glass for laminated glass to have a desired curvature,
Conventionally, there was a problem in that a complicated process called an oversize processing method had to be performed, but according to the present invention, laminated blank glass that is cut into dimensions that match the shape of the laminated glass to be obtained is used. By doing so, it is possible to obtain a deep-bent laminated glass having a desired peripheral edge curvature, making it easy to manufacture laminated glass having such a shape, and reducing costs.

Further, in one embodiment of the present invention, if colored ceramic color ink is printed on the deep bent portion of the laminated blank glass to be press-formed by the auxiliary press member, the auxiliary press member prints the surface of the laminated blank glass or the colored ceramic color ink. Even if press marks are left on the surface of the baked colored band of the ceramic color ink, they will not be noticeable due to the baked colored band of the colored ceramic color ink, so there is an advantage that they will not become an optical defect when viewed through fluoroscopy.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram showing a bending and forming system for laminated blank glass incorporating an embodiment of the bending and forming apparatus for laminated blank glass for laminated glass according to the present invention, and FIGS. FIGS. 6 to 8 are schematic explanatory views showing a local heating method for laminated blank glass, and FIGS. 9 to FIG. 11 shows an explanatory diagram for showing one embodiment of the method of the present invention. 1, 53, 80, 90, 91... Laminated blank glass, 2... Heating/bending section, 10, 42, 5
0,81...bending mold, 12,51...movable split mold,
11...Fixed split mold, 30...Auxiliary press means, 4
0... Taper ring, 52... Auxiliary press member, 70... Heat resistant cloth, 92... Colored band of colored ceramic color ink.

Claims (1)

[Scope of Claims] 1. When two sheets of laminated blank glass for laminated glass are overlapped and simultaneously bent and formed so that the sides of both laminated blank glasses are deeply bent, the two sheets of laminated blank glass are placed on the desired forming surface. The two pieces of laminated blank glass placed on this bending die are placed on a bending die that has a movable split die and a fixed split die, and the two pieces of laminated blank glass placed on this bending die are heated and bent in a heating furnace. The two sheets of laminated blank glass are heated to the bending temperature and temporarily formed by self-weight bending into a shape that roughly follows the bending mold.Then, the movable split mold is fixed to the fixed split mold, and the two sheets are overlapped. For laminated glass, the deep bent portion of the laminated glass is pressed from above by an auxiliary press member while it is placed on a bending die to simultaneously press-form the two sheets of laminated glass. A method of bending and forming laminated glass. 2. It is equipped with a movable split mold and a fixed split mold each having a desired molding surface, and has a molding surface corresponding to the desired molding shape of the side of the blank glass on the upper surface, which is aligned with the side edge of the deep bending compatible part. Two pieces of laminated blank glass are placed on a bending die provided with a taper ring, and the two pieces of laminated blank glass placed on this bending die are heated and bent at a heating and bending processing stage in a heating furnace. The two sheets of laminated blank glass are temporarily formed by self-weight bending into a shape that roughly follows the bending mold, and then the movable split mold is fixed to the fixed split mold, and the two laminated blank glasses are heated to the bending temperature of A laminated glass characterized in that the deeply bent portion of the laminated blank glass is pressed from above by an auxiliary press member while it is placed on a bending die, thereby press-forming two laminated blank glasses at the same time. A method for bending and forming laminated glass. 3 When two pieces of laminated blank glass for laminated glass are overlapped and simultaneously bent and formed so that the sides of both laminated blank glasses are deeply bent, one of the two laminated blank glasses is bent at least deeply on the side. Using laminated blank glass with colored ceramic color frits printed on the parts, this laminated blank glass is stacked on another laminated blank glass to form a movable split mold and a fixed split mold each having a desired molding surface. The two pieces of laminated raw glass placed on the bending die are heated to the bending temperature of the glass in the heating and bending processing stage in the heating furnace, and the two sheets are laminated. Temporarily forming the base glass into a shape that roughly follows the bending die by bending under its own weight, and baking a printed layer of colored ceramic color frit onto the glass plate surface, then fixing the movable split mold to the fixed split mold, A state in which the two laminated raw glasses are placed on a bending mold from above the printed layer of colored ceramic color frit on the deeply bent part of the upper laminated raw glass. A method for bending and forming laminated blank glass for laminated glass, characterized in that two sheets of laminated blank glass are press-formed at the same time by pressing with an auxiliary press member. 4 When two pieces of laminated raw glass for laminated glass are overlapped and simultaneously bent and formed so that the sides of both laminated raw glasses are deeply bent, one of the two laminated raw glasses is bent at least deeply on the side. Using laminated blank glass with colored ceramic color frits printed on the parts, this laminated blank glass is stacked on another laminated blank glass to form a movable split mold and a fixed split mold each having a desired molding surface. The two pieces of laminated raw glass placed on this bending die are heated to the bending temperature of the glass plate in the heating and bending processing stage in the heating furnace, and the two sheets are laminated. The raw glass is temporarily formed into a shape that roughly follows the bending mold by bending under its own weight, and a printed layer of colored ceramic color frit is baked onto the glass plate surface.Then, the two stacked laminated raw glass sheets are then swapped upside down. The laminated blank glass that was on the top side becomes the bottom side, and the printed layer of colored ceramic color frit on this glass is placed on the surface where it overlaps with the other laminated blank glass, and the movable split mold is replaced. It is fixed to the above-mentioned fixed split mold, and then the deep bent part of the upper laminated blank glass is pressed from above by an auxiliary press member while it is placed on the bending mold to bond the two sheets together. A method for bending and forming laminated blank glass for laminated glass, which is characterized in that blank glass is press-formed at the same time. 5. A bending and forming device for laminated blank glass for laminated glass, which overlaps two laminated blank glasses for laminated glass and simultaneously bends and forms the sides of both laminated blank glasses so that the side portions of the laminated blank glasses are deeply bent. A split-type bending mold comprising a fixed split mold having a bending surface corresponding to the intermediate curved part to be formed and a movable split mold having a bending surface corresponding to the deep bending part to be formed, and the bending mold. an auxiliary press member provided above at a portion corresponding to the deep lateral bending portion of the laminated blank glass to be formed; an elevating mechanism for the auxiliary press member; and a movable split die when pressing the laminated blank glass. and a fixing means for fixing the fixed mold to the fixed split mold.