JPH0449148Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for regulating the position of a glass plate transported from a heating furnace to a mold.

(Prior Art) As an apparatus for forming curved glass such as automobile window glass, a plate glass is carried into a heating furnace in a horizontal state, and while passing through the heating furnace, the plate glass is heated to near its softening point. Japanese Patent Publication No. 46-13272 discloses a method in which the sheet glass is transported in a horizontal state onto a mold by means of conveyor rolls, and the plate glass is formed by its own weight or by press molding using the mold.

(Problems to be solved by the invention) According to the above-mentioned conventional apparatus, the plate glass is heated by passing it through the heating furnace, and the plate glass may warp in the heating furnace or the plate glass may not be placed in the heating furnace. Due to misalignment of the axes or unevenness of the level of the conveyor rolls installed, the position of the sheet glass carried out from the heating furnace varies in the direction perpendicular to the conveyance direction. When molded, a curved glass with poor bending precision will be produced.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a guide rail along the conveying direction of the plate glass, engages a moving member with this guide rail, and engages the moving member with the plate glass. A position regulating member is provided to regulate the position in a direction perpendicular to the conveyance direction.

(Function) When the plate glass is carried out from the heating furnace by the conveyor roll and is placed on the mold, it is positioned from the left and right by the position regulating members when it comes out of the heating furnace, and then it is left in this state or positioned by the position regulating members. is released and transported to the top of the mold.

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

FIG. 1 is a plan view of a molding device to which a position regulating device according to the present invention is applied, FIG. 2 is a front view of the same molding device, and FIG. 3 is a side view of the position regulating device. A frame body 2 is provided adjacent to the frame body 2, and an upper die 3 and a lower die 4 are supported on the frame body 2 via a cylinder unit so as to be movable up and down.

Furthermore, a conveyor roll 5 for horizontally passing the plate glass G is disposed in the heating furnace 1, and left and right frames 6 (only one frame is shown in FIG. 2) installed on the frame body 2. In between, a conveyor roll 7 is supported which receives the glass plate G from the conveyor roll 5 and transports the glass plate G in the direction of the lower die 4. Furthermore, the lower die 4 is formed with a recess 8 opening on the upper surface, and is housed in the recess 8. A press roll 9 is provided so as to be able to move up and down independently of the lower die 4.
With the press roll 9 raised, the plate glass G transported by the conveyance roll 7 is delivered onto the press roll 9.

On the other hand, left and right integral guide rails 10, 10 are installed on the frame 2 along the conveyance direction of the plate glass G,
A ball screw 11 parallel to the guide rail 10 is installed below each guide rail 10, and this ball screw 11 is rotated by a motor 12. A pair of movable bodies 13 (four in total) are rotatably screwed onto the ball screw 11, and the movable bodies 13 are engaged with the guide rail 10, and the movable bodies 13 are driven by the motor 12 to transport the sheet glass G. I am trying to move along the direction.

Further, a position regulating member 14 is attached to the movable body 13. This position regulating member 14 includes an air cylinder unit 15 provided in a direction perpendicular to the conveying direction of the plate glass G, and
A regulating piece 16 is fixed to the tip of the rod, and a pad made of non-woven fabric or the like may be attached to the contact surface of the regulating piece 16 with the plate glass G.

The operation of the position regulating device having the above structure will be explained below along with the forming of the glass plate.

The plate glass G carried into the heating furnace 1 is heated to near its softening point while passing through the heating furnace 1 by the conveyor rolls 5. The heated plate glass G is then carried out from the heating furnace 1 and transferred onto the conveyor roll 7 in a horizontal state. At this time, the moving body 13
is waiting near the exit of the heating furnace 1.

Once the plate glass G has been transferred onto the conveyor roll 7, the cylinder unit 15 of the position regulating member 14 is operated to move the regulating piece 16 forward by a predetermined amount in the direction of the plate glass G, and the regulating piece 16 is moved to four positions on the peripheral edge of the plate glass G. Position the plate glass G by pressing it against it. At the same time as this positioning, the motor 12 is driven to move the movable body 13 along the conveying direction of the glass plate G. The glass plate G is conveyed to the top of the press roll 9 of the lower mold 4 while being positioned, and is then transferred to the press roll 9. Hand over plate glass G.

After this, the press roll 9 is lowered or the lower mold 4 is
By raising the lower die 4 from the press roll 9
The plate glass G is transferred to the upper die, the plate glass G is bent by its own weight or inertia force to follow the upper surface of the lower die 4, and the upper die 3 is further lowered to press-form the plate glass G between the upper die 3 and the lower die 4.

In addition, in the embodiment, an example was shown in which positioning is performed by the position regulating member 14 while the plate glass G is being transported, but if the plate glass is positioned immediately after being carried out from the heating furnace 1, then It is also possible to release the positional restriction and to feed the paper freely on the transport roll 7. In other words, variations in the position of the sheet glass G are most likely to occur while being conveyed in the heating furnace 1, so once the position is regulated, even if it is released, no large positional deviation will occur, so the position is always maintained. There is no need to transport it under regulations.

(Effects of the invention) As explained above, according to the invention, the positional deviation in the direction perpendicular to the conveying direction of the sheet glass carried out from the heating furnace is corrected by the position regulating member while being conveyed to the top of the mold. Therefore, it is possible to produce curved glass with excellent molding accuracy without causing poor mold contact during molding.

In addition, since the position regulating member is attached to a moving member that moves along the conveyance direction of the plate glass,
When performing position regulation, the glass plate is not stopped, and the position regulating member can be moved in synchronization with the transportation of the glass plate to perform alignment, which is efficient and less likely to cause distortion in the glass plate.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a molding device to which a position regulating device according to the present invention is applied, FIG. 2 is a plan view of the same molding device, and FIG. 3 is a side view of the position regulating device. In addition, in the drawing, 1 is a heating furnace, 3 is an upper mold, 4 is a lower mold,
5 and 7 are transport rolls, 9 is a press roll, 10 is a guide rail, 11 is a ball screw, 13 is a moving body, 14 is a position regulating member, 15 is a cylinder unit, 16 is a regular piece, and G is a plate glass.

Claims (1)

[Scope of utility model registration request] A guide rail is provided along the line in which the plate glass heated to near its softening point in the heating furnace is conveyed to the top of the mold, and a moving member that moves in the conveying direction of the plate glass is engaged with this guide rail. A position regulating device for plate glass, characterized in that a position regulating member that moves forward and backward in a direction perpendicular to the conveying direction of the plate glass is attached.