JPH0215492B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a method for suspending a plate glass so that the plate glass is vertically carried into a heating furnace, taken out from the heating furnace in that state, and faced between the molds of a press machine. Regarding a lowering device.

(Prior art) Conventional methods for bending and forming plate glass include transporting the plate glass horizontally into a heating furnace, taking it out of the heating furnace horizontally, and press-forming the plate glass horizontally between upper and lower molds; There is a type of material that is carried into a heating furnace in a vertical state, taken out of the heating furnace in a vertical state, and press-formed in a vertical state between left and right molds.

When bending a glass plate in a vertical position, a hanging device is used to carry the glass plate into a heating furnace in a suspended state, and press-form it between molds in a suspended state.

As such a hanging device, the one shown in Japanese Patent Application Laid-Open No. 156924/1983 is known.

That is, a turnbuckle is locked to a rack bar of a wager rack that is movable between a heating furnace and a press bending device, a support plate is swingably attached to the lower end of this turnbuckle, and separate parts are attached to both ends of this support plate. The supporting plate is swingably attached, and hanging tools are attached to both ends of the lower supporting plate to form a tournament shape, and the upper edge of the plate glass is held between the lower ends of the hanging tools. In order to stably support the glass plate, usually a plurality of turnbuckles are engaged with a rack bar, and a hanging tool is suspended from each turnbuckle via a support plate.

(Problems to be Solved by the Invention) As described above, conventionally, in order to continuously press-form sheet glass in a vertical state, a plurality of wager racks are used, each of which suspends and supports the sheet glass. Dimensions vary from wagon rack to rack, and if the plate glass is suspended and supported so that it faces between the molds, the position of the mold and the glass sheet will be misaligned, making it impossible to obtain a product with excellent bending accuracy. The above-mentioned drawbacks are particularly noticeable in deeply bent products such as rear windows of automobiles.

Therefore, in the past, adjustment was made by changing the locking position of the turnbuckle to the rack bar in the left-right direction (the length direction of the rack bar), and by operating the turnbuckle itself in the vertical direction. The mold contact position is kept constant.

However, the above adjustment has to be done for each turnbuckle individually and is done manually, so there is a problem that the adjustment is troublesome and time consuming, and furthermore, it is impossible to make adjustments in the front and rear directions. .

(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention suspends a Harken on the rack bar of a wager rack that is movable between a heating furnace and a press bending device, The Harken is suspended via a flexible support plate, and the position of the Harken is adjusted by an alignment member placed near the press bending device.

(Example) Examples of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of a hanging device according to the present invention;
FIG. 2 is a plan view of the device. In the figure, reference numeral 1 denotes a wager rack, which is supported by rails (not shown) and is movable between the heating furnace and the press bending apparatus.

A large number of grooves 2a are formed on the upper surface of the rack bar 2 that constitutes the lower part of the wagen rack 1, and the Harken 4 is suspended in predetermined grooves 2a through hooks 3 as shown in FIG. An adjuster star 5 is provided at the lower end of this harness 4, and the center of a support plate 7 is swingably attached to the lower end of a rod 6 extending downward from this adjuster star 5.
A rod 8 or a wire is hung down from both ends of the rod 8 or wire, the center of another support plate 9 is swingably attached to the lower end of this rod 8 or wire, and a hanging tool 10 is hung from both ends of this support plate 9. The upper edge of the glass plate 11 is held between the lower end of the glass plate 11.

Here, as shown in FIG. 3 and FIG. 5, which is a plan view, the Harken 4 has a substantially T-shape from the front with a leg portion 4b hanging down from the center of the left and right arm portions 4a, 4a, and the left and right arm portions 4a, 4a are curved in the shape of an arc and tapered toward the tip, and the arm portions 4a, 4
The lower surface of a is an inclined surface 4c, 4 that slopes upward toward the tip.
c. The arms 4a, 4a are supported by chains 4d, 4d on the sides of the rack bar 2, so that the harness 4 is in a substantially horizontal state.

As shown in FIG. 4, the hanging tool 10 includes a rod 12 whose upper end is engaged with the end of the support plate 9, and a first rod whose upper end is pivotally connected to the lower end of the rod 12 so as to be openable and closable.
arms 13, 13 and these first arms 1
Second arms 15, 15 whose upper ends are pivotally connected to the lower ends of 3, 13, and which are rotatably connected to each other via a pin 14 at the intermediate part; and the lower ends of these second arms 15, 15. a chip 16 fixed to the part;
16, and one of the second arms 15, 15 is provided with a stopper piece 15a.

Then, by inserting a bar or the like below the stopper piece 15a and raising the bar or the like, the second arms 15, 15 are expanded. So chips 16,16
The upper edge of the glass plate 11 is exposed between them, and then the bar material or the like is pulled out. As shown in FIG.
1 is suspended and supported. Then, in this state, the wagon rack 1 is moved and the plate glass 11 is carried into the heating furnace, and once the plate glass 11 is heated to near its softening point, the wagon rack 1 is moved again and the glass plate 11 is loaded into the heating furnace.
The plate glass 11 is conveyed to the position shown in the figures and FIG. 2, that is, near the press bending device.

There is a frame 1 near the press bending device.
There are 7.

This frame 17 includes a vertical frame 19 erected on a base 18 or the floor, left and right front and rear frames 20 fixed to the upper end of this vertical frame 19, and a cylinder unit constructed between these left and right front and rear frames 20. 21 (see FIG. 2), the horizontal frame 22 is movable back and forth, and the horizontal frame 22 is provided with an alignment member 23.

As shown in FIG. 5 which is a plan view and FIG. 6 which is a side view, the alignment member 23 is attached to the horizontal frame 2.
A support body 25 is slidably engaged with a rail 24 fixed on the front surface of the support body 25, a support plate 26 that protrudes forward is attached to this support body 25, a motor 27 is provided on the top surface of the support body 25, and this A worm 28 rotated by a motor 27 and a worm gear 29 provided on the upper surface of the support plate 26 are engaged with each other, and a gear (not shown) is fitted to the lower end of a shaft 30 extending below the worm gear 29. By engaging with a rack formed on the front surface and driving a motor 27, the entire alignment member 23 is moved by a predetermined amount in the left and right direction.

Further, a gear box 31 is provided on the lower surface of the support plate 26.
A rotary actuator 32 is fixed to the front surface of the support body 25, and the shaft of this rotary actuator 32 is extended into the gear box 31, and a gear 33 is fitted to the end of this shaft. 33 is meshed with a gear 34 having the same number of teeth.

From the gears 33 and 34, there is a shaft 35,
36 protrudes, and the base end of an arm 37 is fitted onto the shaft 35, and the base end of an arm 38 is fitted onto the shaft 36, respectively. As shown in FIG. 6, the arms 37 and 38 are bent downward from the middle portion, and rollers 39 and 40 are rotatably attached to the front surface of the lower end.
The rollers 39, 40 have small diameter portions 39a, 40a at the center.
It has a bobbin shape with tapered portions 39b and 40b on both sides, and the width of the small diameter portions 39a and 40a is approximately equal to the width of the Harken 4. Further, a screw-in type stopper 41 whose position can be adjusted is attached to one arm 40.

By driving the rotary actuator 32, the gear 33 and the gear 34 meshing with this gear 33 rotate, and along with this rotation, the arm 3
7 and 38 rotate from the solid line position in FIG. 5 to the position shown by the imaginary line. Then, as the arms 37 and 38 rotate in the closing direction, the upper surfaces of the rollers 39 and 40 come into contact with the sloped surfaces 4c and 4c of the lower surfaces of the left and right arm parts 4a and 4a of the Harken 4, and the arm parts 4a and 4a
9 and 40, positioning is performed. That is, even if the Harken 4 is twisted in the front-back direction as shown by the imaginary line in FIG.
The tips of the tapered portions 39b, 4 of the rollers 39, 40
0b, and the arm portions 4a, 4a are guided by the tapered portions 39b, 40b to the small diameter portions 39a, 40.
a, and eventually always reaches the state shown by the solid line in FIG.
4a is the small diameter portion 39a, 40a of the rollers 39, 40;
In order to ride on the top, the Harken 4 is always fixed at a predetermined height position, and even if the Harken 4 is shifted in the left-right direction, the roller 39 remains at the end of rotation in the closing direction of the arms 37 and 38. , 40 come into contact with the side portions of the legs 4b of the harness 4, so the harness 4 is always fixed at a predetermined position in the left and right direction. Therefore, by closing the arms 37 and 38, the position of the Harken 4 can be adjusted in the front and back, left and right, and up and down directions at the same time.

On the other hand, near the left and right lower portions of the frame 17, devices 42, 42 for preventing shaking of the plate glass 11 are arranged.

As shown in FIG. 7, which is a side view, and FIG. 8, which is a plan view, this anti-sway device 42 has guides 44 fixedly installed on a support base 42, and rods 45, 45 are slid onto these guides 44. A limit switch 44b is attached to the guide 44a, and plates 46, 47 are installed between the front and rear ends of these rods 45, 45, and the plate 46 has a cylinder fixed to the lower surface of the support base 43. The rods 49 of the unit 48 are tied together, and an operating rod 50 whose length for operating the limit switch 44b can be adjusted is mounted between the rods 45, 45 so as to be parallel to these rods 45, 45. ing. Further, the plate body 46 has an arm 5 whose intermediate portion is bent.
1, and plate glass 1 is attached to the tip of this arm 51.
A receiving portion 52 that comes into contact with the side end of 1 is attached. The tip of this receiving portion 52 is recessed in an arc shape, and the plate glass 1
1 can be reliably stopped from swinging back and forth.

FIG. 9 is a diagram showing another embodiment of the Harken 4, in which the arms 4a, 4a of the Harken 4 are attached to the rack bar 2 by connecting rods 53, 53, and a hook 54 is provided at the lower end of the leg 4b for upper and lower ends. The hook 54 is screwed so that its position can be adjusted, and a rotation preventing member 55 is fitted around the hook 54 to prevent the hook 54 from rotating once the vertical position is adjusted.

The overall operation of the suspension device constructed as described above will be explained below.

First, while the wagen rack 1 is moved to the vicinity of the heating furnace, the lower end of the hanger 10 clamps the edge of the plate glass 11 and suspends it.

Next, the plate glass 11 is carried vertically into a heating furnace while suspended from the wager rack 1 and heated to near its softening point.Then, after the plate glass 11 is moved and the plate glass 11 is suspended, it is placed between the molds of the press bending machine. That is, the glass plate 11 is pulled out in the vertical position to the position shown in FIG. In this state, the horizontal frame 22 to which the alignment member 23 is attached is waiting at the rear as shown in FIG.

After this, the cylinder unit 21 is activated,
The horizontal frame 22 is moved in the direction of the arrow in the figure (forward). The stop position of this movement is the position where the rollers 39 and 40 come into contact with the tips of the arms 4a and 4a of the Harken 4 when the arms 37 and 38 of the alignment member 23 are rotated. Note that the left and right direction of the alignment member 23 is adjusted in advance by driving the motor 27.

When the forward movement of the horizontal frame 22 is stopped, the rotary actuator 32 is activated to close the arms 37 and 38. Then, as described above, the left and right arms 4a, 4a of the Harken 4 ride on the rollers 39, 40, and the forward/backward, left/right, and up/down positions of the Harken 4 are simultaneously adjusted, and the hanging tools 10 are all aligned in a line, and the plate glass is 11 faces a predetermined position between the dies of the press bending device.

In addition, the rotary actuator 32 is operated to align the hanging tools 10..., and the plate glass 1 is aligned.
1, the plate glass 11 swings back and forth, left and right, or up and down. Therefore, the shaking prevention device 42 is activated. That is, the cylinder unit 48 is activated and the rods 45, 45 are advanced until the operating rod 50 comes into contact with the limit switch 44b. Here, the length of the operating rod 50 is adjusted in advance to match the length of the glass plate 11.
Then, the operating rod 50 switches the limit switch 44.
At the time of contact with b, the receiving portion 52 comes into contact with the side end portion of the glass plate 11, and this contact stops the shaking of the glass plate 11.

After this state is established, the left and right molds are brought together from the front and back in the direction perpendicular to the plane of the paper in FIG. 1, and the plate glass 11 is press-bent formed between these molds.

(Effects of the Invention) As explained above, according to the hanging device according to the present invention, the hanging tool that clamps the upper edge of the plate glass is attached to the wagon rack via the handle, and the handle is simultaneously moved forward and backward by the alignment member.
Since the horizontal or vertical position can be adjusted, the position of the plate glass before press forming can be adjusted automatically and in a shorter time than before, and can be done more accurately, making it easier to adjust the position of the plate glass and the mold. This method does not differ from case to case, and allows deep bending products such as automobile rear windows to be press bent with extremely high precision.

[Brief explanation of drawings]

FIG. 1 is a front view of a hanging device according to the present invention;
Fig. 2 is a plan view of the hanging device, Fig. 3 is a front view of Harken, Fig. 4 is a side view of the hanging tool, Fig. 5 is a plan view of the alignment member, and Fig. 6 is a side view of the alignment member. , FIG. 7 is a side view of the anti-sway device, FIG. 8 is a plan view of the anti-sway member, and FIG. 9 is a front view showing another embodiment of the Harken. In the drawings, 1 is a wagon rack, 2 is a rack bar, 4 is a hardware rack, 7 and 9 are support plates, 10 is a hanger, 11 is a plate glass, 22 is a horizontal frame, 23 is an alignment member, 37 and 38 are arms, and 39 ，
40 is a roller, and 42 is a shaking prevention device.

Claims (1)

[Claims] 1. Suspend a Harken on a wagon rack, hang a support plate on the Harken so that it can swing freely, hang a hanging device or another support plate with hanging devices attached to both ends of this support plate, and use this hanging device. 1. A hanging device for a plate glass, characterized in that the upper edge of the glass plate is held and the position of the bending member is adjusted by an alignment member disposed near a press bending device.