JP2861222B2 - Method and apparatus for forming plate material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a deep bending reinforced glass forming method used for forming a glass sheet for an automobile rear window, front window, side window and the like, and an apparatus therefor.

[Conventional technology]

The forming procedure of the deep bending strengthened glass is as follows. First, the glass plate heated in the previous step is transported by a transport roller into a horizontal bending furnace. When the glass sheet is conveyed to a position below the forming die in the horizontal bending furnace, air is blown out from a lift jet provided below the conveying rollers, and at the same time, small holes formed on the entire suction surface of the forming die. Air is sucked into the molding die from. The glass plate is attracted to the molding die by the blowing force and the suction force, and the central portion of the glass plate is molded on the suction surface of the molding die.

Next, the press ring is raised and both edges of the glass plate are bent along the forming die. Next, retract the press ring, move the quench ring below the glass plate, place the periphery of the glass plate on the quench ring, separate the glass plate from the mold, carry it to the cooling station, cool it, and strengthen it I do. At this time, the glass plate falls down due to gravity before the glass plate is separated from the mold and cooled. for that reason,
The molding surface of the mold is formed in consideration of the amount of the sag.

In other words, when bending a glass plate, the bending of the glass plate using a mold is bent to a shallower shape than the shape to be actually formed in consideration of the amount of sag of the glass plate. It is necessary to obtain a desired bending shape.

[Problems to be solved by the invention]

However, for example, the shape of a glass plate used for a rear window of a recent automobile or the like is required to be formed into a more complicated shape than before, or to be bent into a substantially S-shape. In a glass plate having such a complicated shape, sufficient accuracy cannot be obtained by a method of forming in consideration of sagging. Further, when forming into an S-shape, it is necessary to form the bending curved surface of the forming die deeper than the desired forming surface in a portion that is concave downward, but the blowout force of the lift jet and the suction force of the forming die require the glass plate to be formed. In many cases, it is not possible to adsorb and mold along the deep bending curved surface of the mold. Therefore, the glass plate cannot be deeply bent as required,
Also, there is a problem that it is difficult to form a substantially S-shaped curved surface.

The present invention has been made in view of such circumstances, and it is possible to accurately form a glass plate into a complicated shape, and to form a plate-like material that can be bent into a substantially S-shaped shape or the like. It is an object to provide a method and an apparatus thereof.

[Means for solving the problem]

The present invention, in order to achieve the above object, to position the plate-like material below a molding die having a molding surface corresponding to the molding shape of a desired plate-like material in a molding furnace below, While blowing air from below, the plate material is adsorbed on the molding surface of the mold, and the plate material is bent along the molding surface of the mold, and the molding surface corresponding to the peripheral shape of the desired plate material is formed. In a method of forming a plate-like material, which supports the periphery of the bent-formed plate-like material by a quench ring and separates the plate-like material from the molding die, and conveys the plate-like material to a cooling station for cooling, A pad ring having a molding surface corresponding to the molding shape of the material is provided movably up and down inside the quench ring, from when the plate material is separated from the molding die until cooling is started at the cooling station, The plate-shaped material does not hang under its own weight As described above, the pad ring is positioned at an ascending position where the molding surface thereof is flush with the molding surface of the quench ring, receives the plate-like material, and cools the plate-like material at the cooling station. It is characterized in that it is lowered to release contact with the plate-shaped material.

[Action]

According to the present invention, a pad ring is provided in the quench ring so as to be movable up and down, and the pad ring is positioned flush with a surface on which the quench ring places the plate-shaped material. As a result, the plate-like material separated from the mold is placed on the quench ring at the periphery thereof, and the plate-like material is supported by a pad ring having a molding surface corresponding to the molding shape almost identical to the final lattice shape. Is done. In that state, transport to the cooling station,
As soon as the pad ring is separated from the plate, the plate is cooled. Therefore, the sagging of the plate-like material due to its own weight can be prevented by the pad ring, and the molding surface of the mold can be made substantially the same shape as the final shape curved surface of the plate-like material. For this reason, the forming accuracy is improved, and even when the plate-shaped body is formed into an S-shape, it is not necessary to make the forming surface of the formed shape a curved surface deeper than the desired bending of the plate-shaped material in consideration of the amount of sag. In addition, a plate-shaped material can be bent into a complicated shape with higher precision than before.

〔Example〕

Hereinafter, a method and an apparatus for forming a plate-like material according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a quench ring 10 and a pad ring 12. The quench ring 10 is a support member on the cart 11
The plates 14, 14 are provided via plates 16, 16, 16, 16. The quench ring 10 is a frame having substantially the same shape as the periphery of a glass plate 17 used for, for example, a rear window of an automobile, and is formed so that the periphery of the glass plate 17 rides on the quench ring 10. The cart 11 is a linear motion guide 11A, 11A
The rails 19 intersect with rollers (not shown) for transporting the glass plate 17 provided in the horizontal bending furnace 18 through.
It is slidably provided above.

The pad ring 12 is a bow-shaped plate material 20, 22, which curves downward.
24, and the plate members 20, 22, and 24 form a lattice with the connecting plates 26A to 26E in the transverse direction for connecting them. The upper surface of the lattice of the pad ring 12 thus formed is a glass plate.
It is formed so as to have a molding curved surface corresponding to a molding shape almost the same as the final shape of the seventeen.

Rods 30, 30 are attached to one side end 28A of the pad ring 12.
Is pivotally supported at one end, and the other end is pivotally supported by the connecting rod 32. The connecting rod 32 is connected to a cylinder 36. The cylinders 36 are mounted on the cart 11.
One end of the rods 34, 34 is pivotally supported by the connecting rod 32, and the other side end is pivotally supported by the carriage 11. still,
The other link 28B of the pad ring 12 is provided with the same link mechanism as the link mechanism provided on the above-mentioned one end 28A. Therefore, when the cylinders 36, 36 are operated, the cylinder rods 32, 32 move in the directions of arrows AB in FIG. 1 and the pad ring 12 moves in the vertical direction.

Also, as shown in FIG.
Positioning pins 40 and positioning blocks 42 are provided at the ends A and B of the pads A and 38B and the pad ring 12, respectively.
As shown in FIG. 3, the positioning pin has a conical shape, and a hole 42A is formed in the positioning block 42. Accordingly, when the cylinders 36, 36 are operated and the cylinder locks 32, 32 move in the directions of arrows AB in FIG. 1, the positioning block 42 moves up together with the pad ring 12, and the holes 42 of the positioning block 42 are raised.
A fits into the positioning pin 40, and the upper edge of the hole 42A contacts the conical portion of the positioning pin 40. This allows the pad ring 12
Is stopped, and the pad ring 12 is positioned in the horizontal direction.

In FIG. 1, reference numeral 52 denotes a molding die. The lower surface of the mold has a large number of holes for sucking air, so that almost the entire surface of the glass plate can be sucked and bent.

The operation of the plate-shaped material forming apparatus according to the present invention having the above-described structure will be described with reference to FIG.

First, the heated glass plate 17 is transported by a transport roller (not shown).
Is conveyed to below the mold 52. Glass plate 17 is mold 52
When the glass plate 17 is conveyed to below, the glass plate 17 is blown up by a lift jet, and a suction force by air acts on the molding surface of the molding die 52, and is attracted to the molding die 52 to bend almost the entire surface of the glass plate. Next, both ends 17A and 17B of the glass plate 17 are pushed up by a press ring, and the both ends 17A and 17B are brought into close contact with the mold 52. Thus, the entire surface of the glass plate 17 is brought into close contact with the molding die 52.

Next, evacuate the press ring, then quench ring
10 is moved below the glass plate 17 via the trolley 11, and the periphery of the glass plate 17 is placed on the frame of the quench ring 10. At this time, the operation of the cylinders 36, 36 causes the cylinder rods 32, 32 to move in the direction of arrow B in FIG.
Has risen, and the upper surface of the lattice portion is flush with the upper surface of the quench ring 10. Since the upper surface of this lattice portion is formed in advance in the same shape as the molding surface of the glass plate 17, the glass plate
17 is placed on the quench ring 10 and the pad ring 12. Therefore, the glass plate 17 is supported on substantially the entire surface by the quench ring 10 and the pad ring 12, so that the glass plate 17 does not sag due to its own weight.

Next, the quench ring 10 and the pad ring 12 are retracted from below the molding die 52 to the blow port via the carriage 11, and air is blown out from the blow port to blow the air onto the glass plate 17 to strengthen the cooling. Before blowing air from the outlet, the cylinders 36, 36
To move the cylinder rods 32, 32 in the direction of arrow A in FIG. Thereby, the contact between the pad ring 12 and the glass plate 50 is released, and the cooling is sufficiently enhanced without being affected by the pad ring 12.

In the above embodiment, the bending of the glass plate was described.
The plate material forming method and apparatus of the present invention can be applied to other plate materials such as plastic.

〔The invention's effect〕

As described above, according to the method and the apparatus for forming a plate-shaped material according to the present invention, the plate-shaped material is received by the grid-shaped pad ring while receiving the peripheral edge of the plate-shaped material separated from the forming die by quench ring. Since the plate-like material can be cooled almost at the same time when the pad ring is separated from the plate-like material, it is possible to reduce or prevent sagging of the plate-like material due to its own weight.

Therefore, the molding surface of the molding die can be made substantially the same shape as the final shape curved surface of the plate-like material, and the molding surface of the molding die can be formed with a smaller sagging amount than in the past. For this reason, the plate-shaped material can be easily adhered to the molding die, can be processed with high precision even in a complicated shape, and can be bent into a complicated shape such as a substantially S-shaped shape.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a positional relationship between a pad ring and a quench ring according to the present invention, FIG. 2 is a perspective view showing a stopper provided on the pad ring and a quench ring according to the present invention, FIG. 3 is an enlarged view of the stopper. 10 …… Quench ring, 12… Pad ring, 17… Glass plate, 30, 34 …… Rod, 32 …… Cylinder rod, 36…
…Cylinder.

Claims (2)

(57) [Claims] 1. A plate-like material is positioned below a forming die having a forming surface corresponding to a desired shape of a plate-like material in a forming furnace, and air is blown up from below the plate-like material. The plate-shaped material is adsorbed on the molding surface of the molding die, and the plate-shaped material is bent along the molding surface of the molding die, and is bent by a quench ring having a molding surface corresponding to a peripheral molding shape of a desired plate-shaped material. After supporting the peripheral edge of the formed plate-like material and separating it from the molding die, the plate-like material is conveyed to a cooling station and cooled. A pad ring having a molding surface is provided movably up and down inside the quench ring, and the plate-like material is under its own weight during a period from separating the plate-like material from the molding die to starting cooling at the cooling station. The pad ring so that it does not hang The molding surface is positioned at an ascending position which is flush with the molding surface of the quench ring, and receives the plate-like material. When the plate-like material is cooled at the cooling station, the pad ring is lowered to remove the plate-like material. A method for forming a plate-like material, comprising releasing contact with the shape-like material. 2. A molding die having a molding surface corresponding to a molding shape of a desired plate-like material in a molding furnace below, conveying means for conveying said plate-like material below said molding die, and said plate-like material. Air blow-up means for raising the plate-shaped material when the material is located below the forming die, air suction means for adsorbing the plate-shaped material on the forming surface of the forming die, and a peripheral edge of the bent-formed plate-shaped material. A bending forming apparatus comprising: a quench ring that supports and has a forming surface corresponding to a peripheral forming shape of a desired plate-like material; and cooling means that cools the plate-like material supported by the quench ring. On the inside of the ring, a pad ring having a molding surface corresponding to the molding shape of the desired plate-like material is provided, and the pad ring is formed such that the molding surface of the pad ring and the molding surface of the quench ring are moved by vertical movement means. Same Between a raised position and a lowered position below the raised position, and the plate-shaped material is separated from the molding die until cooling is started at the cooling station. The pad ring is located at the raised position to receive the plate-shaped material so that the plate-shaped material is not dropped by its own weight, and when cooling the plate-shaped material at the cooling station, the pad ring is lowered to the lowered position and the plate-shaped material is lowered. A plate-like material forming apparatus, wherein contact with the sheet material is released.