JPS6158828A - Oscillation device in forming apparatus for tempered bent glass - Google Patents

Abstract

PURPOSE:A device generating almost no see-through strain in a device for quenching a plate glass by blowing air while moving a formed plate glass to and fro between a cope and a drag wherein said to and fro motion of the plate glass is regulated to draw a nonlinear locus and the air-blow is made uniform. CONSTITUTION:A ring mold 13 is held by a base plate 12 for oscillation and the base plate 12 is supported movably in the X and Y direction to a frame 3 through a rail guide (for example, 16 and 20). Further, revolutional bodies 32, 33 attached to the frame 3 and long holes 37, 38 with its longitudinal direction arranged in the X, Y direction being provided to the plate 12 are engaged with eccentric pins 34, 35 provided to the revolutional bodies. By this constitution, the mold 13 is made movable to and fro so as to draw a nonlinear focus such as circular or elliptic focus, etc. In the first stage, heated plate glass G is press-formed between a cope 4 and a drag 5 surrounded by the frame 3. In this stage, a frame body 14 is lifted together with the mold 5 and a periphery of the plate glass G is placed on the upper end edge of the mold 13. Then, the frame body 14 is engaged with the plate 12, the mold 4, 5 are opened, and air is ejected to the plate glass G, and the mold 13 is moved simultaneously so as to draw a circular locus, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for bending and forming a plate glass heated to near its softening point between upper and lower molds, and for rapidly cooling and strengthening the plate glass while oscillating it at the forming position. .

(Conventional technology) A plate glass heated in a heating furnace to near its softening point is conveyed horizontally to between a lower mold and an upper mold by conveying rollers, and after press-forming the glass plate between the upper mold and lower mold, the molding is performed. An apparatus for rapidly cooling and strengthening the glass plate surface by blowing air on it is known, for example, in US Pat. No. 3,573.022.

Such a device press-forms the sheet glass between upper and lower molds while holding the edge of the glass plate with fingers, and then moves the upper mold upward.
The lower mold is moved downward to form a gap between the upper and lower molds and the formed sheet glass, and in this state, air is blown onto the surface of the sheet glass from the air jet holes formed in the upper and lower molds to form the sheet glass. In addition to rapidly cooling the glass, the fingers holding the edge of the glass plate are moved back and forth linearly during this air blowing process, thereby making the air blown onto the glass plate uniform and suppressing distortion caused by the rapid cooling.

(Problems to be Solved by the Invention) As mentioned above, when glass sheets are rapidly cooled and strengthened by blowing air from the mold at the press-molding position, air can be evenly blown onto the surface of the glass sheet to some extent by reciprocating the glass sheet. However, all conventional oscillation devices, including those of the preceding example, perform linear motion, and cannot completely equalize air blowing, resulting in perspective distortion.

Means for Solving Problem C) In order to solve the above problems, the present invention is designed to cause the ring mold on which the peripheral edge of the plate glass is placed to reciprocate so as to draw a non-linear trajectory such as a circular trajectory or an elliptical trajectory. The ring mold is held on a base plate for an oscillation seal,
This base plate is supported movably in the X direction and Y direction with respect to the frame of the molding device via rails and rail guides, and furthermore, the X direction and Y direction formed on the base plate are defined as longitudinal directions by a rotating body attached to the frame side. The long holes are engaged with each other by an eccentric pin provided on the rotating body.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a front view of a reinforced bent glass forming apparatus to which an oscillation device according to the present invention is applied, and FIG. 2 is a side view of the same forming apparatus. Molding 9fi! 1 (1) is a heating furnace (2
), and is surrounded by a frame (3) erected on the floor of the molding device (1), in which an upper mold (4) and a lower mold (5) are placed e1! , is placed. The upper mold (4) is supported on the upper part of the frame (3) via a cylinder unit (not shown) so as to be able to move up and down. A large number of nozzle holes (4a) for air blowing are formed on the lower surface, which is an L-shaped surface. The nozzle hole (4a) may be a simple hole, or a pipe-shaped nozzle may be inserted into the hole.
When a pipe-shaped nozzle is inserted, the tip of the nozzle should not protrude beyond the molding surface of the mold or the pad attached to the molding surface, and the nozzle should not come into contact with the glass surface during press molding. In addition, the lower mold (5) can be moved up and down on the base (7) via the cylinder unit (6), and the upper molding surface has a large number of air blowers, similar to the upper mold (4). A nozzle hole (5a) is formed, and this nozzle hole (5a)
t1% in the vertical direction that opens upward in a place that does not interfere with a)
1 part (8) is formed. This groove (8) is located in the lower mold (
5) acts as a portion into which the conveyance roller (9) enters when it rises during press molding. In addition, a conveying roller (lO
) is provided, and the plate glass CG) heated to near the softening point in the heating furnace (2) is transferred to the molding section between the upper mold (4) and the lower mold (5) by conveying rollers (to) and (9). We are trying to transport it to The feed roller (3) is rotated by a motor (11) (see Fig. 2) fixedly mounted on the frame (3).

On the other hand, the molding device (1) is provided with an oscillation device. Oscillation v ta) and a drive mechanism that simultaneously moves the base plate (12) in the X direction and the Y direction.

That is, the ring mold (13) is provided at the upper end of a frame (14) disposed so as to surround the lower mold (4), and the ring mold (13) does not have a complete ring shape.
As shown in the figure, open the front and rear parts and mold the ring mold (1
3) rises together with the lower mold (4), the transport roller (3)
) to avoid interference.

On the other hand, details of the mechanism for moving the base play) (12) and this base play) (12) are shown in Figures 3 to 5.
Shown in the figure. Here, Fig. 3 is a partially enlarged sectional view of Fig. i2, Fig. 4 is a plan view of the left half seen from position A in Fig. 3 and the right half from position B, and Fig. 5 is a plan view of the left half of Fig. ff54. It is a front view of the right half seen from position D from position C.

First, a structure for supporting the base plate (12) relative to the frame (3) so as to be movable in the X and Y directions will be described. A support plate (15) is fixed to the frame (3) extending in the left-right direction of the molding device (1), and a rail (16) extending in the Y direction is attached to the lower surface of the support plate (15). A rail guide (17) extending in the X direction is attached to the top surface. These rails (16) and rail guides (17) are connected to the support plate (15).
and the base plate (12).
8) is slidably fitted. That is, the intermediate member (1B
) is equipped with a rail (18) extending in the X direction and a rail guide (20) in which a guide groove is formed in the Y direction.
9) is slidably fitted into the rail guide (17);
The rail (16) is slidably fitted into the guide groove of the rail guide (20), and the shapes of the rails (I8), (19) and the guide groove are constricted at the middle.

With this structure, the base plate (12)
is supported by the frame (3), and is
Therefore, the base plate (12) can move in a combination of movements in the X direction and the Y direction, for example, move in a circular trajectory or an elliptical trajectory.

Further, a cylinder unit (21) is fixed to the lower surface of the base plate (12), and this cylinder unit (21)
The rod (22) is moved back and forth in the lateral direction by the operation of the rod (22). This rod (22) is as shown in FIG.
When protruding, it engages with an engaging portion (23) formed on the frame (14) of the ring mold, and serves to hold the frame (10) on the base plate (12).

On the other hand, a support plate (20) other than the support plate (15) is fixed to the frame (3), and a bearing (
25) is attached, and the W1 drive #I (2B), which is arranged parallel to the frame (3), is inserted and held in this bearing (25). This drive shaft (2B) is rotated by a motor (27) fixed at the bottom of the molding device (1) as shown in Figure f7s1. And multiple (4 on each side in the example) helical gears (2 days) are installed at required locations on the drive shaft (2B)...
is fitted.

Further, a bearing (28) is fixed to the lower surface of the support plate (24), and a shaft (30) is inserted and held in the vertical direction through this bearing (28). Here, in the embodiment, four shafts (30) are provided on one side, and a helical gear (31) is fitted to the upper end of each shaft (30).
31)... and the helical gear (28)... are meshed to transmit the rotation of the drive shaft (26) to the shaft (30)...

Furthermore, a rotating body is fitted to the lower end of each of the shafts (30). Here, in FIG. 4, the rotating plates are arranged in pairs of left and right 2 (11 each), and in each pair, one is the first rotating body (32) and the other is the second rotating body (33), and
Pins (34) and (35) are passed through each of the rotating bodies (32) and (33) at positions eccentric to the shaft (30).

On the other hand, guide plates (3B) and (38) are attached to the upper surface of the base plate (12). Each guide plate) (3B) has a long hole (3B) whose longitudinal direction is the X direction.
7) and a long hole (38) whose longitudinal direction is the Y direction, and the pin (37) of the first rotating body (32) is inserted into the long hole (37).
34), and the second rotating plate (33) is located in the elongated hole (38).
) are engaged with each other.

The operation of the oscillation device having the above configuration will be explained with reference to FIG. 7. In addition, Fig. 7 shows one guide play (3B) and the first and second guide plays to make the explanation easier to understand.
Only the rotating bodies (32) and (33) are shown.

First, assume that the state shown in FIG. 7(A) is the reference state. From this state, the motor (27) is driven to rotate the drive shaft (26). Then, the rotational movement of the drive shaft (26) is transmitted through the helical gears (28) and (31) to #IC30), the tjSl fitted thereto, and the second rotating body (32).
(33), and the rotating bodies (32) and (33) rotate. Pins (34) and (35) are eccentrically attached to the rotating bodies (32) and (33), respectively, and the pins (30) are inserted into elongated holes (37) whose longitudinal direction is in the X direction of the guide plate (36). Also, since the pins (35) are engaged with the elongated holes (38) whose longitudinal direction is in the Y direction, the guide plate (36) is rotated by the rotation of the first rotating body (32), for example, in the clockwise direction. 7 Move from the reference position in Figure (A) to the right in the figure, and press the pin (35) by the amount of movement.
is relatively close to the left end of the elongated hole (3 days), and the guide play is caused by the clockwise rotation of the second rotating body (33).
B) moves downward in the figure from the reference position in Figure 7 (A),
The pin (34) approaches the upper end of the elongated hole (37) by the amount of this movement, and since this movement is combined, the guide plate (38) moves to the lower right in the figure, resulting in the state shown in Figure 7 (B). Become. By further rotating the rotating bodies (32) and (33), the guide plate (38) is rotated as shown in FIG.
).

After this state, the state returns to the state shown in FIG. 7(A).

Therefore, if the eccentricity of the pins (34) and (35) from the axis (3o) is set equal, the guide plate C38)
moves in a circular trajectory, and if the amount of eccentricity is made different, the guide plate (3B) moves in an elliptical trajectory.
The size of the one-circular locus and the elliptical locus can also be arbitrarily selected by changing the amount of eccentricity. In addition, this amount of eccentricity is the upper mold (4
) and nozzle holes (4a) and (5a) formed in the lower mold (5).
) is preferably such that the trajectories drawn relative to the surface of the plate glass (G) overlap during rapid cooling.

Next, the operation of the entire molding apparatus (1) to which the above-described oscillation device is applied will be described.

First of all, in the first case before molding, the lower mold (5) is as shown in Figure 1,
Below the position shown in Figure 2, specifically the transport roller (
8) is lowered to a position where its upper surface is downward.

In addition, in this state, the rod (22) of the cylinder unit (21) is not engaged with the engaging portion (23) formed on the frame (14) of the ring mold (13), and the rod (22) of the cylinder unit (21) is not engaged with the engaging portion (23) formed on the frame (
4) is supported by the lower ffi (5) with its lower end resting on the lower part of the lower mold (5). And the frame (14)
When the ring mold (13) is supported by the lower mold (5), the ring mold (13) is lower than the position shown in Figure ft51 and Figure 2, specifically, the upper edge of the ring mold (13) and the lower mold. (
5) It has descended to a position where the upper surface of the road surface is -.

In this pre-forming state, the plate glass (G) heated to near its softening point in the heating furnace (2) is transferred to the conveyor roller (1).
0) and (9), it is carried into the molding section between the upper mold (4) and the lower mold (5).

After that, lower the upper mold (0) and raise the lower mold (5),
A plate glass (G
) is bent and formed. At this time, as the lower mold (5) rises, the frame (14) also rises, and the peripheral edge of the plate glass (G) is tUed to the upper edge of the ring mold (13). At this position, the peripheral portion is placed so that the height of the retaining portion (23) of the frame (14) and the height of the cylinder unit (21) match.

After the plate glass (C) is bent and formed between the upper and lower molds (4) and (5), the cylinder unit (21) is first activated to cause the rod (22) to protrude, and the rod (22) and the frame are (14) and the frame (10) is supported by the oscillation base plate (12).
Next, place the plate glass CG) on the ring mold (13)!
While still in place, raise the upper mold (0) and lower the lower mold (5) to create a space between the molding surface (lower surface) of the upper mold (4) and the molding surface (upper surface) of the lower mold (5) and the surface of the sheet glass. form a gap.

From this state, open the nozzle holes (4) of the upper mold (4) and lower mold (5).
a) Air is ejected from G5a) toward the surface of the plate glass, and the motor (27) is driven to operate the oscillation device, and the ring mold (13) and the ring mold (13) placed on the ring mold (13) are Plate glass (
G) is moved so as to draw a circular or elliptical trajectory on a plane.

In this way, by blowing air while moving the glass plate (G) in a circular or elliptical trajectory, the glass plate (G
) The surface is uniformly quenched and strengthened. Thereafter, the plate glass (G) is transferred from the ring mold (13) onto the conveying roller (8) and transported to the primary process.

(Effects of the Invention) As explained above, according to the present invention, rapid cooling is performed in addition to forming in the bending forming section, so the temperature of the sheet glass does not decrease until quenching, and therefore the thin sheet glass Even if there is, it can be strengthened sufficiently.

In addition, when rapidly cooling the plate glass, the ring mold that holds the plate glass traces a circular or elliptical trajectory, so compared to the case where the ring mold moves back and forth in a straight line,
Cooling air can be evenly blown onto the surface of the glass plate, and almost no nozzle distortion or perspective distortion occurs on the glass plate after quenching.

Furthermore, the structure of the device itself for oscillating the ring mold is simple, and has the advantage of being compact.

[Brief explanation of the drawing]

Fig. 1 is a front view of a reinforced bent glass forming apparatus to which the oscillation device according to the present invention is applied, Fig. 2 is a side view of the forming apparatus, Fig. 3 is a partially enlarged sectional view of Fig. NS2, and Fig. 84. is a plan view of the left half viewed from position A in Figure 3 and the right half viewed from position B, Figure 5 is a front view of the left half viewed from direction C in Figure 4 and the right half viewed from position D, Figure 6 7 is a perspective view showing the engagement mechanism between the frame of the ring mold and the rod, and FIGS. 7(A) to 7(C) are schematic plan views illustrating the operation of the oscillation device. In the drawings, (1) is a molding device, and (2) is a heating furnace. (3) is the frame, (4) is the upper mold, and (5) is the lower mold. (4a), (5a) are nozzle holes, (8) are grooves, (
9), (10) are the 119 feed roller, (12) is the base plate for oscillation, (13) is the ring mold, (14) is the frame, (113), (summer 8) is the rail, (17) , (2'O) is the rail guide, (+8
) is the intermediate member, (2B) is the drive shaft, (32), (33
) is a rotating body, (34), (35) are pins, (37), (
38) is a long hole.

Claims (1)

[Claims] An upper mold and a lower mold are placed in a space surrounded by a frame, and a plate glass is bent and formed between these molds.The formed glass plate is held by a ring mold arranged so as to surround the mold, and is ejected from the mold. In the molding apparatus, the ring mold is held by an oscillation base plate, and the base plate is supported so as to be movable in the X and Y directions perpendicular to each other via a rail and a rail guide. Further, the base plate is formed with a long hole whose longitudinal direction is in the X direction and a long hole whose longitudinal direction is in the Y direction, and the frame is provided with the same number of rotating bodies as the long holes, which are rotated by a drive shaft, and these rotation bodies are provided with the same number of rotary bodies as the long holes. 1. An oscillation device for a molding machine for tempered bent glass, characterized in that an engaging pin is eccentrically attached to the body, and the engaging pin is engaged with each of the elongated holes.