JPS5924686B2 - Glass plate positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for accurately positioning a glass plate, which is being transported horizontally on a roller conveyor, in the front, rear, left and right directions for processing such as cutting.

Conventionally, a device for positioning a glass plate transported by a roller conveyor or the like detects the advancing front end of the glass plate using a detector such as a limit switch or a phototube, stops the conveyor, It has been common practice to position the conveyor in the front and back direction, and then to position it in the left and right directions by pressing the glass plate against a stopper provided on the side of the conveyor.

However, with this type of device, when moving the glass plate for positioning in the direction perpendicular to the direction of transport, that is, in the left-right direction, the position may shift in the front-back direction, and when stopping the conveyor, the rotational inertia of the conveyor drive motor When the positioning of the glass plate in the front-back direction becomes inaccurate due to slack in the drive chain or the like, it is impossible to ensure accurate positioning of the glass plate.

In view of the above-mentioned conventional situation, the present invention provides a device that can easily and quickly perform accurate positioning of a glass plate in the front, rear, left, and right directions on a moving device using a series of related mechanisms.

One embodiment of the apparatus of the present invention will be described below.

FIG. 1 shows a plan view of the device of the present invention, FIG. 2 is a side view (partial sectional view) of the main parts of the positioning device of the present invention, and FIG. 3 shows a part of FIG. FIG.

In FIG. 1, 1 indicates a glass plate transferred by a roller conveyor 2 onto the positioning device for cutting the glass plate, 3 indicates the entire positioning device, and 4 indicates the positioning device.
A conveyor belt is installed in the gap between the air flotation tables 5, which are parallel to each other in the transport direction of the glass plate. is roller conveyor 2,2
The glass plate 1 conveyed from, for example, the conveyor 2 is transferred to the conveyor 2/ by a roller conveyor in alignment with the glass plate conveying surface of '.

The air flotation table 5, which has a large number of blowholes 5' on its upper surface, is supported on a suitable pedestal and is movable up and down relative to the glass plate conveying surface on the upper surface of the roller conveyor or conveyor belt 4. There is.

6 and 7 are stoppers that protrude from the top surface of the air levitation table 5 and are rotatably supported, 6 is a front end stopper that is arranged in a straight line at right angles to the direction of movement of the glass plate, and 7 is a stopper that This is a side stopper placed on the side edge of the floating table in a straight line parallel to the direction of movement of the glass plate.

8 is supported above the air flotation table 5 and the conveyor belt 4 perpendicularly to the conveying direction of the glasses, and includes a bridge 10 having an H-shaped cross section, and a bridge 10 at the rear of the bridge (as shown in FIG. 1). This is a glass plate position adjusting device which has various devices described below on the right side.The devices described above are as follows.

(See Figures 1 to 3) A guide member 11 having guide grooves facing each other in the upper and lower directions is fixed to the side surface of the bridge 10, and a sliding plate 12 has wheels 13 on the upper and lower sides that fit into the guide grooves and roll. is provided between the upper and lower guide members 11, and a support arm 14 is pivotally supported by a shaft 15 at one end of the sliding plate 12 (lower end in FIG. 1). A rotating rod 17 is pivotally supported by a shaft 18.

An air cylinder 21 having a suction plate 16 at its lower end is attached to the tip of the rotating rod 17.

The air cylinder 21 is connected to the tube shaft portion 1 at the tip of the rotating rod 17.
7/ Supported by a metal fitting 23 on top of the air cylinder 21
As a result of the operation, the suction plate 16 is raised and lowered by the rod 22 in a direction perpendicular to the upper surface of the air floating table 5, and the suction plate 16 is attracted to and removed from the glass plate by sending and removing air to and from the cylinder. 19 (Fig. 1) shows that when the rotating rod 17 is rotated in the clockwise direction about the shaft 18 with a stopper attached to the tip of the supporting arm 14, the supporting arm 14 and the rotating rod 17 are rotated. This is to form a right angle, and a spring 20 is stretched between the support arm 14 and the rotating rod 17 to maintain the right angle between them at all times.

A stopper rod 24 is provided on the side of the support arm 14, and the rod comes into contact with the slide plate 12, thereby restricting the rotation of the support arm 14 about the axis 15.

Further, as shown in FIG. 1-A, the support arm 14 is elastically supported from both sides by leaf springs 12/, 12/ near the shaft support portion at its end.

Reference numeral 26 denotes an air cylinder attached to the side surface of the bridge 10 by a bracket 25, and the tip of the piston rod of the cylinder is fixed to a metal fitting 27 attached to the tip of an L-shaped fitting 28 fixed to the top surface of the end of the slide plate 12. There is.

Next, the operation of the present invention will be explained.

The glass plate is conveyed one by one by the roller conveyor 2, transferred onto the conveyor belt 4, and is transferred by the belt to the right (FIG. 1) to the phototube or the like provided just before the stopper 6 at the front end of the positioning device 3. When the front edge of the glass plate 1 is detected by a non-contact type glass plate front edge detector (not shown), the conveyor belt 4
is stopped, and at the same time, the glass plate 1 is stopped immediately before the stopper 6.

At the same time as the stop, the air levitation table 5 moves to the stopper 6.
, 7, the air levitation table 5 lifts the glass plate 1 to a position higher than the upper surface of the conveyor belt, and supports the glass plate 1 in a floating state by the ejected air. In this state, if the air cylinder 21 is operated to lower the suction cup 16 to attract the glass plate 1, and then the air cylinder 26 is operated to slide the slide plate 12 along the guide member 11, the above-mentioned suction The glass plate 1 moved toward the side stopper 7 and the lower side of the glass plate 1 abuts against the stopper 7.

If the slide plate 12 is pushed forward even after contact, the glass plate 1 is blocked by the stopper 7, so the supporting arm 14
begins to rotate about the shaft 15 until the stopper rod 24 comes into contact with the slide plate 12. In this state, the angle between the supporting arm 14 and the rotating rod 17 is larger than the above-mentioned right angle, so the tension of the spring 20 causes the glass plate 1 to move (
(Fig. 1) The glass plate 1 receives a force that is pulled toward the lower right, but the glass plate 1 is in contact with the stopper 7 on the lower side.
The moving direction is only to the right, and it comes into contact with the stopper 6, and the stoppers 6 and 7 maintain simultaneous contact. During this positioning operation, the movement of the glass plate 1, the movement of the slide plate 12, and the rotation of the supporting arm 14 and the rotation rod 17 are correlated and simultaneous movements. In this way, the glass plate 1 is accurately positioned by coming into contact with the stoppers 6 and 7, so that when the glass plate 1 is removed from the suction cup 16 after the positioning, the support arm 14 is rotated by the rotation rod due to the elasticity of the leaf spring 12'. 17 is spring 20
It returns to its initial position (Fig. 1) due to the tension. After that, processing such as cutting the glass plate is performed. As described above, the present invention is capable of automatically and accurately positioning a glass plate mainly by driving an air cylinder using the series of positioning devices including an air floating table while the glass plate is being conveyed by the conveying device. It is a tool that allows processing such as cutting glass plates to be performed quickly and accurately.

If the air cylinder and the like are driven by an appropriate sequence circuit in connection with the detection of the position of the glass plate, the positioning of the glass plate can be automatically performed. Although the above description has specifically been made regarding a glass plate, the apparatus of the present invention can be similarly applied if the article to be cut or processed is a similar plate-like body.

Note that the glass plate is not limited to a rectangular shape, and even if it has a specific angle, the arrangement of the stoppers, etc. can be adapted to suit this shape. The mutual relationship between the vertical movement and the roller conveyor can be changed as appropriate to achieve the same effect.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the device of the present invention, FIG. 1-A is a partial view of FIG. FIG. 2 is a side view (partial sectional view) showing a part of FIG. 2; 1...Glass plate, 2,2'...Roller conveyor, 3...Positioning device, 4...
・Transport belt, 5... Air flotation table, 6.
...Front end stopper, 7 ... Side edge stopper, 10 ... Bridge, 11 ... Guide member, 12 ... Slide plate, 14. ... Support arm, 16 ... Adsorption plate, 17 ... Rotating rod, 21 ... Air cylinder, 26 ... Air cylinder.

Claims (1)

[Claims] 1 A support and transfer section for the glass plate 1 is provided, which is composed of a conveyor belt 4 that is connected to a horizontal conveyance device 2 for the glass plate 1 such as a roller conveyor, and that supports and transfers the glass plate 1, and an air flotation table 5. Stopper 6 along the front edge
are arranged and protruded in a straight line, and stoppers 7 are arranged and protruded in a straight line along the outermost edge of the air flotation table 5 at a certain angle to the line of arrangement of the stoppers 6. A bridge 10 is installed above the front edge in a direction perpendicular to the traveling direction of the glass plate 1, and a slide plate 12 is provided that slides along a guide member 11 fixed to the rear side of the bridge 10. A supporting arm 14 is rotatably supported on the slide plate 12, a rotating rod 17 forming a fixed angle with the supporting arm 14 is pivotally supported at the tip of the supporting arm 14, and the above-mentioned A suction plate 16 for suctioning the glass plate 1 is provided, and as the slide plate 12 slides along the guide member 11, the glass plate 1 suctioned by the suction plate 16 is displaced and the adjacent sides of the glass plate 1 are displaced. the edge with the stopper 6
and 7, a positioning device for the glass plate that can be brought into contact with the glass plate.