JPS6235974B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for transporting a glass plate while it is placed into a heating furnace for molding.

As shown in FIG. 1, a conventional bending glass forming apparatus has a glass sheet conveying line 3 consisting of a conveyor belt 1 and a forming line 5 consisting of conveyor rollers 4 arranged in parallel. 3
The glass plate 2 flowing above is transferred to a mold 6 flowing on a forming line 5, and while being placed in this mold 6, it is carried into a heating furnace 7 in the forward direction of movement, and the glass plate 2 is heated to near its softening point. , the glass plate 2 is bent by its own weight to follow the shape of the mold.

When transferring the glass plate 2 from the conveyance line 3 to the molding line 5 here, it is necessary to place the glass plate 2 so that the peripheral edge of the glass plate 2 does not shift on the frame 8 of the mold 6. For this reason, conventionally, the glass plate 2 has been aligned by the following means.

In other words, for alignment, the conveyance line 3
Based on the transfer line 9 from to the molding line 5,
The mold 6 is aligned so that the center line 10 in the direction perpendicular to the conveyance direction of the frame body 8 coincides with the transfer line 9.
is stopped, and in this state the glass plate 2 is transferred from the conveyance line 3. For this reason, the distance L between the tips of the stoppers 11, 11 fixed to the mold 6 and the center line 10 is set to a constant value in all molds. By doing this, the mold 6 is always aligned with its center line 10.
The transport line 3 of the glass plate 2 is aligned as follows.

That is, a pair of stoppers 12, 12 are provided ahead of the transfer line 9 of the transfer line 3 in the direction of movement, and a pair of left and right positioning cylinder units 13,
13, and a pair of positioning cylinder units 14, 14 are respectively disposed behind the transfer line 9 of the conveyance line 3 in the traveling direction, so that the glass plate 2 flowing on the conveyance line 3 has its front edge at the stopper 12. , 12 and the transport line 3 stops driving, and then each cylinder unit 13, 14 is made to protrude a predetermined amount according to the size of the glass plate 2, thereby aligning the glass plate 2. In this case, the positions of the stoppers 12, 12 are adjusted so that the center line 15 of the glass plate 2 after alignment coincides with the transfer line 9.

By doing this, the center line 15 of the glass plate 2 and the center line 10 of the frame 8 will match, and when the glass plate 2 is transferred from the conveyance line 3 to the mold 6 on the molding line 5. When heated, the periphery of the glass plate 2 is placed exactly on the frame 8 of the mold.

Conventionally, the alignment and transfer of the glass plate 2 have been carried out by the above-mentioned means, but there are the following disadvantages.

In other words, as shown in FIG. 1, when glass plates 2 of different sizes are conveyed continuously, the glass plate 2 on which the mold 6 conveyed on the molding line 5 is also placed.
The size will vary depending on the size of. As described above, since the distance L between the center line 10 of the mold 6 and the stopper 11 is set to a constant value for all molds, the mold 6 always stops at the point where its center line 10 coincides with the transfer line 9.

However, if the sizes of the glass plates 2 are different, the glass plates 2 will stop at a point in the conveyance line 3 where the center line 15 of the glass plate 2 and the transfer line 9 do not match. Therefore, it is necessary to adjust the position of the stopper 12 so that the stopper 12 stops at the point where the center line 15 of the glass plate 2 coincides with the transfer line 9. In order to adjust the position of the stopper 12, the conveyance line 3 must be stopped, and the adjustment takes time and effort. Therefore, it is actually difficult to continuously bend and shape glass sheets of different sizes.

The present invention has been made in view of the above-mentioned conventional problems and to improve them, and allows glass sheets of different sizes or shapes to be continuously transferred from a conveyance line to a mold on a molding line. It is an object of the present invention to provide a mold for bending glass molding.

In order to achieve such an object, the present invention does not consider the transfer line as a reference when transferring glass sheets as in the past, but instead changes the distance between a predetermined position of the frame of the mold and the stopper of the mold. The outline of the mold is that the mold that is transported on the molding line is composed of a frame body on which the glass plate is placed and stoppers, and the stoppers are arranged on the left and right sides from the center line of the frame body in the conveyance direction. A pair is fixedly installed approximately equidistant apart,
In addition, the distance between a predetermined point on the front frame that is a predetermined distance left and right from the center line in the conveyance direction and the tips of the left and right stoppers is constant for all molds.

An example of the implementation of the present invention will be described in detail below with reference to FIGS. 2 to 5.

FIG. 2 is a plan view of the conveying and forming apparatus according to the present invention, and this forming apparatus includes a conveyor line 2 consisting of a conveyor belt 21 that conveys a flat glass plate 20.
2, and a forming line 23 arranged parallel to this conveyance line 22, the forming line 23 is constituted by conveyor rollers 24, and the forming line 23 penetrates the inside of a heating furnace 25.

A mold 26 is conveyed onto the molding line 23. This mold 26 is a frame body 27
Stopper 2 fixed below the frame 27
It consists of 8,28. The shape of the frame 27 is made equal to the shape of the peripheral edge of the glass plate 20 that moves on the conveyance line 22 in parallel with the mold 26, and the frame 27 has a front frame 27a, a left and right side frame 27
b, 27b and the rear frame 27c, and the third
As shown in the figure, the left and right side frames 27b, 27b are swingably mounted on the base 29 of the mold, and have a shape that is curved outward and upward. Further, the front frame 27a and the rear frame 27c have a shape in which the center is curved downward, and both ends are pivotally connected to the inner ends of the side frames 27b via hinges 30. Then, the front frame 27a and the rear frame 2
The stopper 28 is fixed in the front-rear direction to a support 31 extending downward from 7c.

Therefore, in the state before entering the heating furnace 25, the mold 2
6 is the side frame body 27b, 27b as shown in FIG.
is in an open state, the flat glass plate 20 is installed between the side frames 27b, 27b, and then the glass plate 20 is heated in the heating furnace 25 to near its softening point. , the side frames 27b, 27b rotate, and the fourth
As shown in the figure, the side frame 27b and the front and rear frames 27a, 27c form a continuous curved surface, and the glass plate 20 is bent and formed to follow this curved surface.

The mounting positions of the stoppers 28, 28 and the relationship between the stoppers 28 and the front frame 27a are as follows.

That is, in all the molds 26, the stopper 2
8 and 28 are attached at equal distances D ₁ from the center line l of the frame 27 in the transport direction, and points P _{1 and 28} are equidistant from the center line l of the front frame 27a in the transport direction left and right. Assuming P ₂ , this point
The distance D ₃ in the front-rear direction between P ₁ , P ₂ and the tips of the left and right stoppers 28 , 28 is made equal for all the molds 26 .

On the other hand, a pair of stoppers 3 are provided on the conveyance line 22.
2,32 are fixed. These stoppers 32,
The interval between the stoppers 32 and 32 is equal to the interval 2D ₂ between _{the points P 1 and} P ₂ , and _the stoppers 32 and
The end faces of 32 are in contact with each other. Further, positioning rods 33, 33 are arranged behind the stoppers 32, 32 in the transport direction, and move forward and backward by rotating. A positioning device 34 is provided to perform the positioning.

This positioning device 34 has a right-hand threaded portion 35a and a left-hand threaded portion 35b carved on the left and right sides of one rod 35,
A moving member 3 with a limit switch 36 for glass edge detection attached to each threaded portion 35a, 35b.
7 and rotate the rod 35,
The movable members 37, 37 are moved in a direction toward each other or in a direction away from each other.

Further, FIG. 5 shows that the glass plate 20 aligned on the conveying line 22 is transferred to the mold 2 on the molding line 23.
This transfer device 40 has a cylinder unit 42 on the lower surface of a support 41 that runs along a rail constructed above the conveyance line 22 and the forming line 23. A base 44 is fixed to the lower end of the rod 43 of this cylinder unit 42.
A motor 45 is placed on top of the rod 46, and a rod 46 having a right-hand threaded portion and a left-hand threaded portion is passed through the base 44. A pair of rods 46 are arranged in a direction perpendicular to the plane of the drawing. Then, a movable member 48 provided with a locking portion 47 is screwed between the right-hand threaded portion and the left-hand threaded portion of the pair of rods 46, and the rod 46 is screwed together by the drive of the motor 45.
By rotating the moving member 48, the rod 46
I'm trying to move along.

As the movable members 48, 48 move closer, the roller 49 of the locking portion 47 touches the top surface of the glass plate 20 and the hook portion 50 of the locking portion 47.
holds the lower surface of the glass plate 20, and in this state, the entire transfer device 40 moves in the direction of the arrow, thereby transferring the glass plate 20 from the conveyance line 22 onto the mold 26. Then, by rotating the motor 45 in the opposite direction, the movable members 48, 48 are moved in directions away from each other, the holding state of the glass plate 20 is released, and the glass plate 20 is placed on the frame 27 of the mold.

Next, the positional relationship between the frame 27 of the mold 26 and the glass plate 20 when transferring the glass plate 20 will be explained.

First, the conveyor roller 24 is moved on the molding line 23.
The tip of the stopper 28 of the mold 26, which is moving due to the rotation of..., comes into contact with a limit switch (not shown), and the rotation of the conveyor roller 24 is stopped and the mold 26 is moved.
6 stops at that position. In this case, the front frame 2
Since the predetermined points P ₁ and P ₂ of 7a are always located at a constant distance from the tip of the stopper 28 in all the molds 26, the points P ₁ and P ₂ of all the molds 26 must be stopped at the same position. becomes.

Further, the glass plate 20 flowing on the conveyance line 22 comes into contact with the stoppers 32, 32. Then, the conveyor belt 21 stops running due to the operation of the limit switch, and the glass plate 20 stops at that position. Next, the glass plate 20 is aligned in the longitudinal and lateral directions by the positioning rod 33 and the positioning device 34. In this case, stopper 3
The distance between the points P ₁ and P ₂ is equal to the distance 2D ₂ between the points P 1 and P 2, and the extension of the line connecting the contact points P ₁ ′ and P ₂ ′ of the glass plate 20 with respect to the stoppers 32 and 32 is the point
Since it is made to coincide with the line connecting P ₁ and P ₂ , if the glass plate 20 is transferred onto the mold 26 by the transfer device 40 in that state, the glass will be placed on the frame 27 of the mold. The plate 20 is placed without shifting. This transfer is carried out with the glass plates 20 always aligned on the conveyance line, regardless of the shape of the glass plate or the glass plates of different sizes.
corresponds to the mold frame 27, so
Even when glass plates of different sizes are conveyed continuously, there is no need to adjust the position of the stopper 32 each time.

As explained above, according to the present invention, a glass plate moving on a conveying line is transferred onto a mold moving on a forming line, and in this state, the glass plate is carried into a heating furnace and bent. The molds are always stopped at the same predetermined position of the mold frame for all molds, so when aligning the glass plate on the conveyance line, it is possible to stop at the same predetermined position of the frame. Since the dot can be stopped at a predetermined position, there is no need to adjust the position of the stopper when transferring glass plates of different sizes. Therefore, even if glass plates of different sizes are mixed together, the glass plates can be continuously bent and formed, and there are many effects such as greatly improving workability compared to the conventional method.

[Brief explanation of the drawing]

The drawings show a conventional example and an example of implementation of the present invention, in which Fig. 1 is a plan view of a conventional bending forming apparatus, Fig. 2 is a plan view of a forming apparatus to which a mold according to the present invention is applied, Figures 3 and 4 are front views of the mold;
FIG. 5 is a side view of the transfer device. In the drawing, 20 is a glass plate, 22 is a conveyance line, 23 is a molding line, 25 is a heating furnace, 26 is a mold, 27 is a frame, 27a is a front frame, 40 is a transfer device, and l is a frame. Center line in the transport direction of the body, P ₁ ,
_P2 is a point a predetermined distance away from the center line in the conveyance direction.

Claims (1)

[Claims] 1 From the glass plate conveyance line 22 to the molding line 23
In a conveying and forming apparatus in which a glass plate 20 is transferred to an upper mold 26 and the glass plate is continuously carried into a heating furnace 25, the mold includes a frame body 27 on which a glass plate is placed, and this frame. The front frame body 2 of all the molds conveyed on the molding line consists of a pair of stoppers 28 fixed at positions approximately equal distances away from the center line l in the conveyance direction of the mold body on the left and right, respectively.
Points P ₁ and P ₂ which are a predetermined distance left and right from the center line in the conveying direction of 7a are arranged at a constant distance D ₃ from the tip of each stopper, and furthermore, the points P 1 and P 2 are spaced a certain distance from the center line in the conveying direction of the conveyor line 22 to the glass plates of the pair of stoppers 32 provided on the conveying line 22. contact point of
The distance between P ₁ ′ and P ₂ ′ is made equal to the distance between the points P ₁ and P ₂ of the mold, and when the mold is transported to the transfer position, the points P ₁ , P ₂ , P 1. A bending glass conveying and forming apparatus characterized in that ₁ ' and _P2 ' are on the same line.