JPH03152016A - Method and device for detecting cargo collapse - Google Patents

Abstract

PURPOSE:To improve detecting capacity by a method wherein, in a cargo collapse detecting device for cloth on a carriage truck, an object presence detecting device is inserted such that a detecting part is positioned outside a laminating side, and a detecting direction is extended along a laminating edge. CONSTITUTION:A guide member 10 of a detecting device 2 is inserted between adjoining laminating cloths of cloths loaded on a carriage truck 1, and the detecting direction of a reflection type photoelectric switch 11 is extended along the edges of laminating cloths. When a light path from a projector 12 is shut off by cloths to which cargo collapse occurs, light is reflected and enters a light receiving part 13, a reflection type photoelectric switch 11 is turned ON, and cargo collapse is reported. This constitution properly selects an insertion position and properly detects even when cargo collapse already occurs, and improves performance.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention deals with the problems caused by shocks, vibrations, etc. when unmannedly transporting laminated materials such as fabrics, papers, or metal plates loaded on a transport vehicle. The present invention relates to a method and device for detecting cargo collapse.

(Prior art) First, #! Taking as an example a fabric whose lamination state is relatively unstable among i-layer products, the manner of lamination and conveyance thereof will be explained.

For example, in a finishing factory for delicate products, the fabric discharged from the processing machine table is continuously folded and stacked on a conveyor truck installed on the exit side of the processing machine table (hereinafter referred to as "folding"), and the fabric is stacked on top of the conveyor truck installed on the exit side of the processing machine table. A common method is to transport this to a processing machine table for the next process. Usually, the folding of the fabric is performed by a folding device installed on the processing machine stand,
The fabric is folded with a folding width of 80 to 100 cm.

However, it is difficult to control the folding position within 2 cm due to various factors such as the operational accuracy of the folding device or the entrainment of the sudden air that occurs when folding the fabric. A positional shift of about cm has occurred.

However, this positional shift is small compared to the folding width, and since there is friction between the stacked fabrics, it is possible to stack the fabrics to a height of 1 to 2 meters. However, when transporting the laminated sachets in this manner, the center of gravity of the laminated cloth may shift due to shocks, vibrations, etc. that occur during transport, causing stacking displacement or collapse of the load. The fabrics that fall onto the floor are contaminated by sewage, dust, etc. on the floor, and are also damaged by being dragged by the transport vehicle. This collapsing of cargo is a particular problem when transporting objects unmanned. Conventionally, as a device for detecting collapsing of transported objects during unmanned transport, an appropriate detection means is fixed to the transport vehicle or its peripheral equipment. There has been a detection device that detects a relative positional shift of a conveyed object with respect to a detection means, that is, detects an object that has deviated from a set area.

(Problem to be Solved by the Invention) However, as described above, the laminated fabric has some lamination deviation, and when the aforementioned detection device detects the collapse of the load, in order to detect the collapse of the load at an early stage, the above detection is performed. When the means approaches the laminated fabric, as shown in FIG. 6, even when the laminated fabric (1') is stable, the fabric/n (
If the protruding part (2) of the fabric (1') is on the detection area (arrow a) of the detecting means (2b), the detecting means (2b) detects this and detects the protruding part (4) of the fabric (g). There is a problem in that it is considered as a load collapse.

Meanwhile, in an attempt to solve this problem, the detection means (2b)
When the laminated fabric (k5) is separated from the laminated fabric (k5), as shown in FIG.
) There is a problem in that it cannot be detected until it is described in ().

The present invention is based on the above-mentioned circumstances, and the stacking misalignment has already occurred! The object of the present invention is to provide a cargo collapse detection method and device that can accurately predict cargo collapse even for R-layer objects.

(Means for Solving the Problems) The first invention of the present invention is a method for detecting the collapse of stacked objects, in which a detection device for detecting the presence or absence of stacked objects is installed so that its mowing section is located outside the surface of the stack. It is characterized in that it is inserted so as to cause the load to collapse, and its detection direction is along the side edge of the stack to detect the collapse of the load.

And, the second invention is a stack collapse detection device,
A guide member that can be inserted between laminates, a detection means for detecting the presence or absence of stacking misalignment of the laminates placed on the guide member, and a control device that is operated by inputting a detection signal from the detection means. It is characterized by being composed of:

(Operation) Next, the operation of the method and apparatus of the present invention having the above features will be explained.

In order to detect the collapse of stacked materials using the device of the present invention, first,
The guide member of the detection device is inserted into the inter-laminated material, and the detection portion of the detection device is positioned outside the side surface of the lamination with an appropriate distance therebetween, and the detection direction of the detection portion is aligned along the side edge of the 8i layer. After that, when a stack of stacked objects that is misaligned due to some external force enters the detection area of the detection section, the detection section detects this and outputs a detection signal to the control device. Then, the control device receives the detection signal t and operates the peripheral device. According to the method and apparatus of the present invention, it is possible to freely set the detection area for detecting load collapse according to the form of the stacked product.

(Example) Hereinafter, examples of the method of the present invention and the following will be explained with reference to the accompanying drawings.
A specific embodiment of the device of the present invention used for this will be explained.

First, the configuration of the protein ζ device will be explained. FIG. 1 is a schematic view showing the overall structure of one embodiment of the device of the present invention, and FIG. 2 is a perspective view showing the detection device. As shown in FIG. 1, the device of this embodiment includes a transport vehicle (1) on which a laminated fabric (2) is loaded, and an automatic guided vehicle (3) connected to and towed by the transport vehicle (1).
) and a detection device (2) attached to the laminated fabric (2).

The automatic guided vehicle (3) is appropriately equipped with a control device (4), and travels on the track as appropriate under the control of this control device (4). In addition, this control device (4) is connected to the cable (
14) is connected to the sensing device Q).

The conveyance cart (1) is composed of a suitably prepared table (1a) and a single wheel (1b) provided on one side thereof, and is a cart conveniently used for collection.

As shown in FIG. 2, the detection device (2) includes a flat guide member (10) that can be inserted into the light layer fabric, and a pair of light projecting section (12) and light receiving section (13). It consists of both a reflective photoelectric switch (11) provided as a cough light emitter (1
A reflective photoelectric switch (11) is fixed to one end of the guide member (10) so that the light receiving section (13) and the light receiving section (13) face upward. And as mentioned above, the cable (14)
The reflective photoelectric switch (11) is connected to the control device (4) shown in FIG.

Next, a mode of detecting the collapse of the laminated fabric (G) using the collapse of the load detection device having the above configuration will be described.

First, as shown in FIG. 3, the guide member (10) of the detection device (2) is inserted between the layers of the laminated fabric (Fi) loaded on the transport vehicle (1), and the guide member (10) of the reflective photoelectric switch (1
1) The detection direction is a! Line it along the side edge of f/A fabric ■. At this time, the detection device 1 (2) is not detecting the fabric [F]. The reflective photoelectric switch (11) shown in FIG.
), the reflective photoelectric switch (11) enters the ON state only when an object blocks the optical path of the light emitted from the light receiving section (13) and the reflected light enters the light receiving section (13).

In addition, when inserting the detection device (2) into the laminated fabric, the insertion position is determined by taking into consideration the 81-layer state of the fabric (2) or the detection area of the reflective optical t-switch (11). It is preferable. That is, it is desirable to provide a laminated fabric (in D, one detection bag W1 (support) below and near the part where the load is expected to collapse). Next, this transport trolley (2)
The automatic guided vehicle (5) shown in Fig. 1 transports the robot to an appropriate position, but when the transport platform (2) suddenly starts or stops, or when it passes through a curved route,
As shown in Figure 4 I, the unstable lamination of the fabric (Fl) may cause lamination misalignment. At this time, the lamination misalignment part [existence] of the fabric (F) is reflected in the reflective photoelectric switch ( 11)
The optical path of the light emitted from the light emitting part (12) of the fabric is blocked, and the reflected light enters the light receiving part (13) of the reflective photoelectric switch (11). The reflective photoelectric switch (11) is connected to the control device (4) (the first
A control device that outputs a detection signal to (Fig.) and receives this signal! 1 (4) immediately stops the automatic guided vehicle (3).

In addition, a reflective charging switch was used in this H1 example, but
The present invention is not limited to this, and a limit switch (21) equipped with a rod-shaped contactor (22) as shown in FIG. 6 may be used. As shown in the figure, the detection device (2)' has the contactor (22) facing upward and the limit switch (21) fixed to the end of the guide member (10). .

When the laminated fabric CF) comes into contact with the contactor (22), the limit switch (21) detects this.

It is also possible to attach an alarm sounding device to the device of this embodiment, and by receiving the detection signal and making the sound sound, the workers in the eight surroundings will be notified of the collapse of the fabric (3). becomes possible.

Furthermore, it goes without saying that the detection device (2) can be applied not only to fabrics but also to laminates such as paper boards.

(Effects of the Invention) As detailed above, according to the method and apparatus of the present invention, for a laminate such as a fabric whose state is stable despite displacement of the A-layer, the load collapses. Since the detection device can be installed at a location where cargo collapse is expected, it is possible to accurately detect cargo collapse. In addition, compared to conventional devices that have a fixed detection area, the detection area has the advantage that the size of the detection area can be freely set according to the laminated state, and the configuration is very simple. Another advantage is that equipment costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the overall configuration of one embodiment of the device of the present invention, FIG. 2 is a perspective view showing the detection device, and FIGS.
The figure is an explanatory diagram showing how the detection device is used, FIG. 5 is a perspective view showing a second embodiment of the detection device, and FIGS. 6 and 7 are explanatory diagrams showing a conventional example. (10) (11) (12) (14) (21) (22) ... Guide member, ... Reflective photoelectric switch, ... Light emitter, (13) ... Light receiver, ...・Cable, ...limit switch, ...contact. 3 Figure 6

Claims (2)

[Claims] (1) A method for detecting the collapse of a stacked object, in which a detection device that detects the presence or absence of an object is inserted so that its detection part is located outside the side of the stack, and the detection direction is set along the side edge of the stack. A load collapse detection method characterized by detecting load collapse. (2) A guide member that can be inserted between the laminates, a detection means that is placed on the guide member and detects the presence or absence of stacking deviation of the laminates, and a control device that operates by inputting the detection signal of the detection means. What is claimed is: 1. A load collapse detection device comprising: a load collapse detection device capable of detecting a load collapse stack;