JPH0441149Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The device disclosed in Japanese Patent Publication No. 46-13272 or Japanese Patent Publication No. 53-12931 is known as a device for forming curved glass used as automobile window glass, etc. There is.

This device, as shown in FIG.
The sheet glass heated to near its softening point and conveyed in a horizontal state was received on the press roll 102 with the plate glass raised above the upper surface of the mold 100, and then placed in the mold 100 and around the mold 100. The ring mold 103 is raised, the plate glass G on the press roll 102 is received by the ring mold 103, and the plate glass G is removed by the own weight of the plate glass G and the inertial force accompanying the rise of the mold 100.
is bent and formed by following the mold 100 and ring mold 103.

(Problems to be solved by the invention) In the conventional mold described above, the plate glass G conveyed by the conveyor roll is delivered onto the press roll 102, and then transferred to the ring mold 103 or the mold. 100, the plate glass G may break during this time. Then, the fragments of the broken plate glass G will fall into the recess 101, and these fragments must be removed. However, the bottom surface 1 of the conventional recess 101
01a is flat, and the bottom surface 101
Since the distance between a and the press roll 102 is narrow, it is extremely troublesome to remove the glass fragments, and the molding apparatus must be stopped during this time, which is disadvantageous in terms of molding efficiency.

(Means for Solving the Problems) In order to solve the above problems, the present invention makes the bottom surface of the press roll storage recess formed in the mold a sloped surface.

(Function) If the sheet glass breaks during transfer from the transport roll to the press roll, transfer from the press roll to the mold, or during molding, and the fragments fall into the recess, the fragments will slide along the bottom of the recess, and the molding will be interrupted. It is carried out through the opening on the side of the mold.

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

FIG. 1 is a schematic perspective view of a molding device to which a mold according to the present invention is applied, and FIG. 2 is a longitudinal cross-sectional view of the same device. As an example, the mold is explained as a lower mold paired with an upper mold. do.

The molding apparatus is composed of an upper mold 1 and a lower mold 2, which is a mold. The upper mold 1 is hollow as shown in FIG. It is formed.

Further, the lower mold 2 is similarly hollow, and has cooling air blowing holes 4 formed in its upper surface, and furthermore, a recess 6 in which the press roll 5 is accommodated is formed in the lower mold 2. This recess 6 is formed in a direction perpendicular to the conveyance direction of the plate glass G, and opens on the upper surface and side surfaces of the lower mold 2, and furthermore, the bottom surface 7 of the recess 6 is formed in the central portion 7a.
It forms a roof shape with downwardly sloping surfaces 7b, 7b on both sides.

On the other hand, the press roll 5 is supported by a frame 8, as shown in FIG. 2, and this frame 8 is moved up and down by a cylinder unit (not shown). Further, a ring mold 9 is disposed around the lower mold 2, and this ring mold 9 is engaged with an oscillation device.

A method of forming plate glass G using the forming apparatus configured as above will be described below.

First, the plate glass G, which has passed through a heating furnace and has been heated to near its softening point, is conveyed by conveyance rollers 10 in a horizontal state onto the press roll 5 which is elevated above the lower mold 2.

Next, when the press roll 5 receives the plate glass G, the press roll 5 descends or the lower die 2 and the ring mold 9 rise, and the plate glass G is removed.
is supported by the ring mold 9 at its peripheral edge.
In other words, the plate glass G is delivered to the ring mold 9. Further, at this time, the press roll 5 is housed in the recess 6 of the lower mold 2 so as not to interfere with the lower mold 2, as shown in FIG.

When the peripheral edge of the glass plate G is placed on the ring mold 9, the peripheral edge of the glass plate G conforms to the ring mold 9 due to its own weight or due to inertia when the lower die 2 and the ring mold 9 rise. Then, the central part curves to follow the upper surface of the lower mold 2, and in parallel with this, the upper mold 1 descends, and the plate glass G is press-molded between the upper mold 1, the ring mold 9, and the lower mold 2.

If the plate glass G is damaged during delivery or molding, the broken pieces will fall into the recess 6.
The mold falls into the mold, slides along the bottom surface 7 of the recess 6, and is automatically discharged to the outside through the opening on the side surface of the lower mold 2. Here, if the angle of the inclined surface 7b of the bottom surface 7 of the recess 6 is small, the glass fragments may not be automatically ejected out of the lower mold 2, but even in this case, they can be easily ejected because they are inclined. be able to.

In the embodiment, the mold is shown as a lower mold paired with an upper mold, but the mold may not use an upper mold. Further, in the illustrated example, the bottom surface 7 of the recess 6 has a roof-like shape with a high central portion, but the entire bottom surface 7 may be a surface sloped in one direction.

(Effects of the invention) As explained above, according to the invention, in a mold equipped with a press roll, the bottom surface of the recess provided in the mold that accommodates the press roll is an inclined surface, so that sheet glass is Even if the piece breaks and falls into the recess, it is automatically ejected from the recess or can be easily ejected from the recess,
Therefore, there is no need to stop the molding line, and the production efficiency of curved glass can be increased.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a molding device using a mold according to the present invention, and FIG. 2 is a longitudinal sectional view of the same molding device.
FIG. 3 is a longitudinal sectional view of a conventional mold. In the drawings, 1 is an upper mold, 2 is a lower mold, 5 is a press roll, 6 is a recess, 7 is a bottom surface of the recess, 7b is an inclined surface, and G is a plate glass.

Claims (1)

[Scope of utility model registration request] 1. A mold for sheet glass, characterized in that the mold is provided with a recess for storing press rolls, wherein the recess is open at the top and side surfaces of the mold, and the bottom of the recess is an inclined surface.