JPH01197336A - Carrier device for plate glass - Google Patents

Abstract

PURPOSE:To prevent the rear surface of a plate glass from being in contact with an air table by combining the air table for floating the plate glass and a carrier part for carrying the plate glass so that each has its respective specified function. CONSTITUTION:The carrier device of a plate glass is provided with a carry-in zone, a carrier pitch presetting zone, a penetration zone and a carrier zone in order from the upstream side and the plate glass G is floated and carried via these respective zones by an air table 1. Further in the carrier pitch presetting zone, a gate-type frame 10 is provided on the floor and supporting frames 11 are provided to this gate-type frame 10 and both a carrier member 12 and an alignment device 13 facing to the upper part of the air table 1 are movably fitted to the supporting frames 11. The carrier member 12 is constituted so that the position of a ring-roll conveyor 18 fitted to a sliding member 16 is regulated to the direction orthogonal to the carrier direction by driving a motor 14 according to change in kind of the plate glass G.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air float type conveying device used for conveying plate glass to a heating furnace or the like.

(Prior art) Plate glass is generally transported using a belt conveyor, rollers, etc., but in order to transport plate glass coated with ceramic paste with the coated side facing down, it is necessary to transport it in a non-contact manner. Since this is necessary, the material is transported while floating on an air table.

A device disclosed in Japanese Patent Publication No. 47-211.0 is known as such a device for conveying by an air table.

This device levitates a glass plate while holding it between bending members over an air table that has many holes for ejecting hot gas (cooling gas), and moves the glass plate onto the air table by moving the bending members using a conveyor. The device is designed to transport objects without contacting them.

(Problems to be Solved by the Invention) In the conventional device described above, when the air pressure ejected from the air table is reduced, the plate glass and the table come into contact with each other.
If the air pressure is too high, the glass plate will blow up, so the air pressure must be constantly adjusted within an appropriate range, and this adjustment is troublesome.

Furthermore, in the conventional apparatus, there is a problem in that the glass plates tend to come into contact with each other at the seams and stepped portions of the air table.

(Means for Solving the Problems) In order to solve the above problems, the present invention disposes a conveying member such as a conveying roller above the air table that comes into contact with the upper surface of the glass plate levitated by the air jetted from the air table. Established.

(Function) Since the glass plate is conveyed by being pressed against the conveying member from below by air pressure, the lower surface of the glass plate does not come into contact with the air table.

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

FIG. 1 is a plan view of a plate glass conveying device according to the present invention, FIG. 2 is a front view of the same device, FIG. 3 is an enlarged plan view of a conveying pitch setting section, and FIG. 4 is A-A in FIG. 3. 5 is an enlarged view of the main part of Fig. 4, Fig. 6 is a view taken along the line B-B in Fig. 3, Fig. 7 is an enlarged view of the main part of Fig. 6, and Fig. 8 is an enlarged view of the main part of Fig. 4. 7 is an enlarged sectional view taken along the line CC in FIG. 7, and FIGS. 9 and 10 are plan views showing the guide rails in the crowded area.

As shown in FIG. 1, the conveyance device is provided with a carry-in zone, a conveyance pitch setting zone, a crowd zone, and a conveyance zone in order from the upstream side. I have to. Here, the air table 1 is provided on the pressure equalization chamber 2, and the air table 1 and the pressure equalization chamber 2 are divided into a plurality of parts along the conveyance direction of the plate glass G, and each of the divided pressure equalization rooms 2 has a fourth
As shown in Figures and Figure 6, the wind pressure adjustment damper 3
A blower 4 is connected through the air table 1, so that the air pressure ejected from the upper surface of each divided air table 1 can be arbitrarily adjusted. Specifically, in the carry-in zone and the latter half of the transfer zone, the ejection pressure from the air table l is reduced, and in the transfer pitch setting zone, crowd zone, and the first half of the transfer zone, the ejection pressure is increased, and the air It is pressed from below against a conveying member such as a ring roll conveyor above the table l.

Further, the air table 1 is inclined at about 5° toward one side, and the main chain 5 is stretched along the lowered side. This main chain 5 reverses its running direction at the position of a sprocket 5a provided approximately at the boundary between the carry-in zone and the conveyance pitch setting zone, and the running of this main chain 5 moves the plate glass G further downstream from the conveyance zone to a heating furnace or the like. The material is continuously transported to a molding device, etc. That is, the main chain is assumed to run at a speed of 5 to 20+/sin, and the stoppers 6,
A foot 7 and a bushing 8 are attached. Here, the stopper 6 is used to prevent the glass plate from advancing too far and to synchronize the movement of the main chain 5 with the crowding of the glass plate G, and the foot 7 is in contact with one side of the glass plate G to control the direction of the glass plate G. The stopper 6, the foot 7, and the button 8 are used to control the glass plate G and convey the glass plate G by contact pressure.
The spacing and shape of are selected according to the type of plate glass G.

Next, the structure of each zone will be explained. First, an air table 1 that blows out air at low pressure is provided in the carry-in zone, and a belt conveyor 9 is provided along the sloped downward side of this air table 1 to supply the plate glass G onto the air table 1 in the carry-in zone. do.

In addition, in the conveyance pitch setting zone, as shown in FIGS. 3 to 5, a circular frame 10 is set up on the floor, a support frame 11 is provided on this circular frame 10, and a support frame 11 is attached to the upper part of the air table 1. A conveying member 12 and an alignment device 13 facing the front are movably attached.

The conveyance member 12 is attached to the support frame 11 as shown in FIG.
A ball screw 15 rotated by a motor 14 is supported on the lower surface, a nut portion 17 of a slide member 16 is screwed onto this pole screw 15, and the plate glass G is attached to the slide member 16 by driving the motor 14 according to the change in type. The ring roll conveyor 18 can be adjusted in position in a direction perpendicular to the conveying direction. Here, the ring roll conveyor 18 has a shaft 20 rotated by a motor 19.
A ring roll 21 is fixed to the ring roll 21, and a rubber ring 22 for contacting and conveying the plate glass G is fitted on the outer periphery of the ring roll 21.

By the way, the ring roll conveyor 18... is divided into an upstream ring roll conveyor group, an intermediate ring roll conveyor group, and a downstream ring roll conveyor group, as shown in FIG. Ring roll conveyors 18a..., 1 constituting the conveyor group
8c... are each rotated by one motor 19a, 19c, and the ring roll conveyors 18b... constituting the intermediate ring roll conveyor group are each independently rotated by a motor 19b... I have to. The motors 19b... are turned on and off by signals from the corresponding sensors 23.... in particular,
When the leading edge of the preceding glass plate G is conveyed to the position of the sensor 24, the sensor 24 is turned on, the remoter 19c is stopped, and the preceding glass plate G is stopped. On the other hand, when the tip of the glass plate G following the preceding glass plate G is conveyed to the position of one sensor 23n among the sensors 23..., the sensor 23n is turned on, and the motor 19b corresponding to this sensor 23n is turned on. and this motor 1
All the motors on the upstream side of 9b stop, and the subsequent plate glass G also stops. Then, by changing the position of the sensor 23n that stops the conveyance of the plate glass G, an arbitrary conveyance pitch pattern is set. Thereafter, as will be described later, the stopper 6 of the main chain 5 turns on the sensor 50 (see FIG. 1), thereby starting the conveyance of all the glass plates G. Note that as the sensor 23, for example, an optical sensor consisting of a light projecting element and a light receiving element is used.

Further, as shown in FIG. 5, the alignment device 13 rotatably supports a ball screw 25 parallel to the conveying direction of the sheet glass G on the support frame 11, and by rotating the ball screw 25 by a motor, the entire alignment device 3 can be moved around the sheet glass. It is arranged to move in the conveyance direction of G (direction perpendicular to the plane of the paper in FIG. 5). Further, the entire alignment device is moved by the motor 26 in a direction perpendicular to the conveying direction of the glass plate G. The alignment device 13 is equipped with an alignment piece 28 whose position can be adjusted in a direction perpendicular to the transport direction by the operation of a cylinder unit 27, so that even complex-shaped sheet glass can be easily aligned.

Furthermore, in a crowded zone, a gate-shaped frame 30 is erected on the floor as shown in FIG. 6, and a support frame 31 is provided on this gate-shaped frame 30. The zero crowding device 32 to which the crowding device 32 is attached is moved by a motor (not shown) in a direction perpendicular to the conveyance direction of the glass in response to changes in the type of sheet glass G.
Lower brackets 34 and 34 are suspended from both ends of the adjustable slide member 33, and these brackets) 34
．． A rotary shaft 36 is rotatably inserted between bearings 35, 35 provided at the lower end of the rotary shaft 34.

Here, the rotating shafts 36 are provided separately on the upstream side and the downstream side as shown in FIGS. 1 and 2, and these rotating shafts 36
6 is inclined so as to be parallel to the air table 1.

And sprockets 37, 37 are attached to the rotating shaft 36, 36.
two endless chains 38.38 spaced apart in the width direction are stretched between these sprockets 37, and these chains 38.38 are supported on a rotating shaft 36.36 via bearings. It passes inside. This chain 38 is connected to a motor 40 provided on the slide member 33.
(see FIG. 6), the rotating shaft 36 is rotated to run, and the running speed is made equal to the running speed of the main chain 5.

In addition, a large number of plates 41 are installed spaced apart in the conveying direction between the pair of chains 38, 38.
A slide bearing 42 is attached to the outer surface of the slide bearing 42, a slide par 43 is slidably engaged with the slide bearing 42, and a pad 44 is attached to the slide par 43.

Furthermore, as shown in FIG. 9 and FIG. are provided with guide rollers 47 and 48 that engage with these guide rails 45 and 46, and the guide rollers 48 are attracted to electromagnets 49 arranged on one side (upward side) of the air table l.

The operation of the conveying device constructed as described above will be described below.

First, a plate glass G, which is supplied to a carry-in zone with the side coated with ceramic paste facing downward, is floated onto an air table l on which air is blown out at low pressure. Since the air table 1 is inclined, the plate glass G moves downward along the inclination, and one side of the plate glass G is placed on the belt conveyor 9.
Due to the contact pressure with the belt conveyor 9, the plate glass G is sent to the conveyance pitch setting zone in a suspended state from the air table l.

Since high-pressure air is blown out from the air table l provided in the conveyance pitch setting zone, the plate glass G sent to the conveyance pitch setting zone is further levitated upward.
The upper surface is the ring roll 2 of the ring roll conveyor 18.
1. Here, since the axis of the ring roll conveyor 18 is inclined so as to be parallel to the air table l,
The plate glass G conveyed by the rotation of the ring roll conveyor 18 is transferred to an intermediate ring roll conveyor group on the upstream side, and is transferred to a predetermined ring roll conveyor of this intermediate ring roll conveyor group as described above. is stopped by turning on a preset feed pitch setting sensor 23n. Further, the glass plate G that is being conveyed in advance of the glass plate G concerned is stopped by turning on the sensor 24 provided at the tip of the conveyance pitch setting zone. The preceding glass plate G is aligned by the alignment piece 28 by operating the cylinder unit 27 at this position.

Next, as the main chain 5 runs, the stopper 6 attached to the main chain 5 turns on the sensor 50 (see Fig. 1) provided at the upstream end of the crowd zone, thereby turning on the sensor 24 and the sensor 23n. The conveyance of each plate glass G that had been stopped is started. In other words, at this point, the two sheets of glass are being transported at a fixed pitch.

Since the air table 1 installed in the crowd zone blows out high-pressure air, the plate glass G that has entered the crowd zone is levitated upward in the same manner as the conveyance pitch setting zone, and its upper surface is exposed to the crowd device 32. It comes into contact with a pad 44 attached to the slide par 43, and is conveyed downstream as the slide par 43 moves.

Here, since the chain 38 that makes the slide par 43 run is running at the same speed as the main chain 5, the plate glass G and the stopper 6 and foot 7 attached to the main chain 5
And, the positional relationship in the conveying direction with the busher 8 is not disturbed, that is, the plate glass G is always conveyed in a relationship located between the stopper 6 and the busher 8.

Furthermore, since the slide par 43 of the crowding device 32 is inclined so as to be parallel to the air table 1, it is moved downward by the slide bearing 42, but at the beginning of conveyance, the electromagnet 49 moves parallel to the conveying direction while adsorbing the return guide roller 48, the slide par 43 moves parallel to the main chain 5 and at a constant speed, but does not move close to the main chain 5.

After moving a predetermined distance, the electromagnet 49 is demagnetized.

Then, the slide par 43 slides due to its own weight, and after further sliding to some extent due to its own weight, the guide roller 47 comes into contact with the guide rail 45, and thereafter is guided by the guide rail 45 and moves in the width direction. Here electromagnet 49
are divided into slide pars 43 at equal intervals, and can be turned on or off (excitation, demagnetization) depending on the length of the glass. Further, the plate glass G pressed from below against the pad 44 attached to the slide par 43 gradually enters between the stopper 6 of the main chain 5 and the button 8 as the slide par 43 moves in the width direction, and one side of the plate glass G is pressed against the foot 7. comes into contact with.

Since the air table 1 on the downstream side of the position where the plate glass G comes into contact with the foot 7 blows out low-pressure air, the plate glass G is thereafter conveyed by the contact pressure with the foot 7, and the slide part 43 and leaves the pad 44.

On the other hand, the slider 43 moves together with the chain 38, and when the glass plate G is conveyed to a predetermined position, the guide roller 48 engages with the guide rail 46 as shown in FIG. 1θ and returns in an inverted state.

In the example, an example in which the air table is inclined is shown, but a horizontal air table may be used, a conveyor roll or a belt conveyor may be used instead of a ring roll conveyor, and a slide The bar may be slid by mechanical means instead of relying on its own weight.

(Effects of the Invention) As explained above, according to the present invention, a conveying member such as a ring roll conveyor is provided above the air table, and the air jet pressure from the air table is increased to press the plate glass against the conveying member from below. Because it was transported in a
The lower surface of the glass plate does not come into contact with the air table during alignment or at the joint between the air tables.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a plate glass conveying device according to the present invention, FIG. 2 is a front view of the same device, FIG. 3 is an enlarged plan view of a conveying pitch setting section, and FIG. 4 is an A-input of FIG. Direction arrow view, MS5
The figure is an enlarged view of the main part of Fig. 4, Fig. 6 is a view taken along the arrow B-B in Fig. 3, Fig. 7 is an enlarged view of the main part of Fig. 6, and Fig. 8 is an enlarged view of the main part of Fig. 7. The enlarged sectional view in the C direction, FIG. 9, and FIG. 1O are plan views showing the guide rails in the crowded area. In addition, in 1 drawing, l is the air table, 5 is the main chain,
12 is a conveying member, 13 is an alignment device, 18 is a ring roll conveyor, 23, 24° 50 is a sensor, 32
is a crowding device, 43 is a slide bar, 44 is a pad, G
is plate glass.

Claims (1)

[Claims] A conveying device for plate glass comprising an air table that levitates the plate glass, and a conveyance member that is disposed above the air table and conveys the plate glass while being in contact with the upper surface of the levitated plate glass.