JPH08300071A - Panel detecting device - Google Patents

Abstract

PURPOSE: To deal with the production of a small panel and a large panel by holding a 1st light receiving unit and a 2nd light projecting unit or a 1st projecting unit and a 2nd light receiving unit arranged between right and left carrying- out conveyers so as to freely project from and retract in the carrying face. CONSTITUTION: In a panel detecting device 70 as to a left carrying-out conveyer 30L is composed of a 1st projector 72 installed on the left side and a 1st light receiving unit 73 installed through a lifting sensor holding mechanism 80 on the right side, as to a right carrying-out conveyer 30R is composed of a 2nd projector 74 installed through a lifting sensor holding mechanism 80 on the light axis of the 1st projector 72 on the left side, and a 2nd light receiving unit 76 installed on the right side. The 1st light receiving unit 73 and the 2nd projector 74 are made to project from and retract in the carrying surface with the lifting sensor holding mechanism 80. At the time of carrying small panels, it is detected with projectors and the light receiving units installed on the carrying conveyers 30R, 30L respectively, but in the time of carrying a large panel, it is detected with the 1st projector 72 and the 2nd light receiving unit 76. Therefore, the device can be deal with the production of the large panel and the small panels.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel detection device installed downstream of a transfer press.

[0002]

2. Description of the Related Art A transfer press having a plurality of metal molds and transferring processed products one after another to perform a predetermined molding is suitable for mass production and is used in the automobile industry and the like. An example of this type of transfer press is described in Japanese Patent Application Laid-Open No. 5-317998 “Panel automatic loading device” proposed by the present applicant. The transfer press in the publication can simultaneously form two small panels W, W on the left and right sides, so that the small panels W, W are unloaded by a pair of left and right unloading conveyors. The small panels W, W are described as being detected by a sensor (not shown).

[0003]

By the way, the progress of the transfer press is remarkable, and it becomes possible to form a large panel which is wide enough to extend over the left and right carry-out conveyors. In this case, the large panel is left and right. It is transported in the form of being hung on the carry-out conveyor. Since the left and right carry-out conveyors are equipped with sensors to detect small panels, they cannot detect large panels. Therefore, a technique is adopted in which a signal obtained by using a television camera or the like is subjected to image processing to detect the presence / absence, shape, and size of the panel. However, the image processing method is too expensive to detect the presence or absence of the panel, and the apparatus becomes large and expensive. Therefore, the present inventors have conducted researches to establish a technique for skillfully combining an inexpensive optical sensor to detect a small panel and a large panel, and succeeded in completing a simple and inexpensive detection device.

[0004]

In order to solve the above-mentioned problems, the present invention provides a first erected on both sides of a left carry-out conveyor.
A light emitter and a first light receiver, and a second light emitter arranged on the optical axis of the first light emitter and erected on both sides of the right carry-out conveyor.
The light emitter and the second light receiver, and the first light receiver and the second light emitter, or the first light emitter and the second light receiver, which are arranged between the left and right carry-out conveyors, can be projected and retracted with respect to the transport surface of the carry-out conveyor. A lifting / lowering type sensor holding mechanism for holding and a panel detection device are configured.

[0005]

When detecting a small panel, the elevating sensor holding mechanism is erected so that the first light projector and the first light receiver face each other and the second light projector and the second light receiver face each other. When detecting a large panel, the elevator type sensor holding mechanism is tilted down to hide the first light receiver and the second light emitter or the first light emitter and the second light receiver arranged between the left and right carry-out conveyors below the conveying surface. . The remaining first light projector and second light receiver or the second light projector and first light receiver are opposed to each other to detect a large panel.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a layout diagram (plan view) of a transfer press and a carry-out conveyor according to the present invention. The panel carried out via the final conveyors 2L and 2R and the inspection conveyors 3L and 3R of the transfer press 1 (small panel P1,
(P2 or large panel) is vertically distributed to the upper and lower distribution conveyors 10L and 10R, and this vertical distribution conveyor 1
Carry-out conveyors 20L and 20R and carry-out conveyors 30L and 30R that are vertically stacked at the exits of 0L and 10R
And the downstream conveyors 40L, 40R branched to the left and right, the pushing mechanism 50 for pushing the panels to the downstream conveyors 40L, 40R, and the panels on the downstream conveyors 40L, 40R are transferred to the baskets 60 ... (8 pieces in total). Robot 61 ...
(4 units in total) are arranged in the flow direction of the panel.

FIG. 2 is a diagram showing a layout of a conveyor group according to the present invention. The conveyor group is a final conveyor 2.
L, 2R, inspection conveyors 3L, 3R, upper and lower sorting conveyors 10L, 10R, carry-out conveyors 20L, 20R, carry-out conveyors 30L, 30R (downstream conveyor 40
L and 40R are omitted).

FIG. 3 is a side view of an upper / lower distributing conveyor for vertically distributing according to the present invention. The upper / lower distributing conveyors 10L and 10R stand a post 12 on a base 11 which is bolted to a foundation, and are placed on the post 12. On axis 1
The swing beam 13 is attached so as to be movable up and down around 3a, a rubber belt 14 is stretched over the swing beam 13, and the rubber belt 14 is rotated by a motor M1.
A swing motor M2, a gear set 15, and a crank 16 are arranged on the base 11, and the crank 16 is rotated about a shaft 16a.
Raise and lower 3. 18 is a balancer, which is a swing beam 13
Is urged upward to average the load of the swing motor M2. By operating the swinging motor M2 in accordance with a command from the control unit, which will be described later, the swinging beam 13 is moved up and down, and the outlets of the upper and lower conveyors 10L and 10R are selectively exposed to the upper and lower discharge conveyors 20L and 20R.

FIG. 4 is a layout view of the panel detecting device according to the present invention. The panel detecting device 70 is the left carry-out conveyor 3
The first light projector 72 erected on the left side of the 0L via the fixed post 71, and the first light receiver 73 erected on the right side of the left unloading conveyor 30L via the lifting sensor holding mechanism 80 described later. And a second light projector 74 disposed on the optical axis of the first light projector 72 and erected on the left side of the right carry-out conveyor 30R via an elevating type sensor holding mechanism 80 described later.
The second light receiver 76 erected via the fixed post 75 on the right side of the right carry-out conveyor 30R, and the left and right carry-out conveyors 3
The first photodetector 73 and the second photodetector 73 arranged between 0L and 30R
A lifting type sensor holding mechanism 80 for holding the light projector 74 so that it can be retracted from the transport surfaces of the carry-out conveyors 30L and 30R.
And consisting of

Here, the projectors 72 and 74 are preferably a plurality of light emitting diodes for emitting infrared rays or laser diodes for emitting laser light, which are preferably arranged vertically.
Reference numerals 3 and 76 denote a plurality of light receiving elements that receive the light and substitute electrical signals in accordance with the amount of light received, in the same manner. Although the panel has a certain level of height, the shape of conveyance is not constant, so if there is no light entering one or a certain number of the above-mentioned light receiving elements, an object is placed between the light projectors 72, 74 and the light receivers 73, 76. Recognize that there is a (panel).

FIG. 5 is a side view of the lifting type sensor holding mechanism (when standing up) according to the present invention.
Includes a base 81, a swing beam 84 supported by the base 81 via a bracket 82 and a pin 83 so as to swing in the vertical direction, and a cylinder unit 85 for swinging the swing beam 84. Become. The cylinder unit 85 has the cylinder side connected to the base 81 and the tip of the piston rod 85a connected to the swing beam 84. Reference numeral 86 is a protective plate, 87 is a standing side positioning bolt, and 88 is a retreat side positioning bolt. Rocking beam 8
A first light receiver 73 is attached to the front surface of FIG. 4 and a second light projector 74 (not shown) is attached to the rear surface.

FIG. 6 is a side view of the lifting type sensor holding mechanism (when retracted) according to the present invention. The cylinder unit 85 is operated and the piston rod 85a is retracted as necessary. The swing beam 84 rotates counterclockwise around the pin 83 to become substantially horizontal. This stop position is the retracting side positioning bolt 88.
It can be changed by adjusting. In this case, the oscillating beam 84 is substantially below the conveying surface of the conveyor, so that a large panel can pass therethrough. The protective plate 86 serves to cover the first light receiver 73 (and the second light projector 74).

The operation of the panel detection device having the above structure will be described below. 7 (a) and 7 (b) are a block diagram and a function explanatory diagram of a control unit for the panel detection device according to the present invention. In (a), the first light projector 72 and the first light receiver 73
Is connected to the first detection unit 93 by lines 91 and 92, and
The light emitter 74 and the second light receiver 76 are connected to the second detector 96 by lines 94 and 95, and these signals are connected to the lines 97 and 9.
8 to send to the control unit 99. The configuration up to this point is an ordinary circuit configuration.

In this embodiment, the lines 92, 95, 9 are further added.
It is characterized in that a simple switch means 100 that acts to turn on and off 8 is provided. That is, when detecting the left and right small panels respectively, the lines 92 and 98 are in the ON state and the line 9 is on.
5 is turned off.

In (b), when a large panel is detected, the control unit 99 operates the switch means 100 based on the detection signal to turn off the line 92, turn on the line 95 and turn off the line 98. . This forms a detection mechanism including the first light projector 72, the second light receiver 76, and the first detection unit 93.

FIGS. 8A and 8B are operation diagrams of the panel detection mechanism of the present invention. In (a), the left small panel P1 flowing through the left carry-out conveyor 30L is the first projector 72,
The right small panel P2 detected by the first light receiver 73 and flowing through the right carry-out conveyor 30R is the second light projector 74 and the second light receiver 7.
Detect at 6. In (b), left and right carry-out conveyors 3
The large panel P3 flowing through 0L and 30R may be detected by the remaining first light projector 72 and second light receiver 76.

In FIG. 8A, the light beam is run from left to right, but it may be run from right to left. At this time, the first light receiver 73, the first light projector 72, and the second light receiver 73 are arranged from left to right in the figure.
It is aligned with the light receiver 76 and the second light projector 74. That is, the first light projector 72, the second light receiver 76 or the first light receiver 73, and the second light projector 74 are arranged between the left and right carry-out conveyors 30L and 30R.

Further, the switch configuration (switch means 100) shown in FIG. 7 exhibits the same operation and effect as the soft switching by the ladder circuit of the sequencer. Therefore, it is optional whether the switch configuration is a hardware configuration or a software configuration.

[0019]

The present invention has the following effects due to the above configuration. The panel detection device according to claim 1, wherein the first light projector and the first light receiver are provided upright on both sides of the left carry-out conveyor, and both of the right carry-out conveyor are arranged on the optical axis of the first light projector. The second light projector and the second light receiver that are erected aside, and the first light receiver and the second light projector or the first light projector and the second light receiver that are arranged between the left and right carry-out conveyors Since it is composed of an up-and-down type sensor holding mechanism that holds it so that it can be retracted from the transport surface, it is possible to handle small panels and large panels simply by moving up and down. Therefore, according to the present invention, it is possible to detect a panel of a transfer press, which appropriately produces two small panels and one large panel, with an extremely inexpensive and simple device, which results in an increase in equipment cost and complexity. Can be suppressed.

[Brief description of drawings]

FIG. 1 is a layout diagram (plan view) of a transfer press and a carry-out conveyor according to the present invention.

FIG. 2 is a diagram showing a layout of a conveyor group according to the present invention.

FIG. 3 is a side view of a vertical sorting conveyor according to the present invention.

FIG. 4 is a layout view of a panel detection device according to the present invention.

FIG. 5 is a lifting type sensor holding mechanism according to the present invention (when standing up).
Side view of

FIG. 6 is a lifting sensor holding mechanism according to the present invention (when retracted).
Side view of

FIG. 7 is a block diagram of a control unit for the panel detection device according to the present invention and an explanatory view of its operation.

FIG. 8 is an operation diagram of the panel detection mechanism of the present invention.

[Explanation of symbols]

1 ... Transfer press, 10L, 10R ... Vertical sorting conveyor, 20L, 20R ... Unloading conveyor, 30
L, 30R ... Carry-out conveyor, 40L, 40R ... Downstream conveyor, 50 ... Extrusion mechanism, 70 ... Panel detection device, 71
... Fixed post, 72 ... First light projector, 73 ... First light receiver,
74 ... 2nd light projector, 75 ... Fixed post, 76 ... 2nd light receiver, 80 ... Elevating sensor holding mechanism, P1, P2 ... Panel (small panel), P3 ... Panel (large panel).

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B65H 29/58 B65H 29/58 C 43/08 43/08 (72) Inventor Ichiyoshi Takaya Saitama 1-10 Shinsayama, Sayama-shi 1 within Honda Engineering Co., Ltd. (72) Inventor Katsumi Yamada 1-10-1 Shinsayama, Sayama-shi, Saitama Inside Honda Engineering Co., Ltd.

Claims (1)

[Claims] 1. A pair of left and right carry-out conveyors are extended from a transfer press, and small panels are respectively carried by these carry-out conveyors, or a large panel is carried by a pair of left and right carry-out conveyors that are stretched over these carry-out conveyors. Occasionally, in the device for detecting the panel, the device is provided with the first device installed on both sides of the left carry-out conveyor.
A light emitter and a first light receiver, and a second light emitter arranged on the optical axis of the first light emitter and erected on both sides of the right carry-out conveyor.
The light emitter and the second light receiver, and the first light receiver and the second light emitter, or the first light emitter and the second light receiver, which are arranged between the left and right carry-out conveyors, can be projected and retracted with respect to the transport surface of the carry-out conveyor. A panel detection device comprising: a lifting sensor holding mechanism for holding the sensor.