Classification display device and sorting device

Abstract

To provide a classification display device that can display a classification of an object with three or more classifications, and to provide a sorting device.SOLUTION: A classification display device for displaying classification information of an object on the basis of types of objects includes a sorting lighting device for generating and emitting sorting light of which mode varies according to the type, as classification information, to an object.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a type display device and a sorting device.

Background Art

[0002] In Patent Document 1 below, a conveyor unit (belt conveyor) that conveys a group of objects to be discriminated including metal scraps and a specific substance different from the metal scraps, an imaging unit that acquires a captured image of the group of objects to be discriminated during conveyance, and a discrimination unit that discriminates a specific substance from the group of objects to be discriminated during conveyance using a discrimination model based on information regarding the color and shape of the captured image and the specific substance, and a projection unit (projector) that projects a preset projection image onto the discriminated specific substance are disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the above background art, the type of a specific substance and metal scraps is identified (displayed) by alternatively projecting a projection image from a projector provided above the belt conveyor only onto the specific substance. In such background art, it is impossible to display the types of three or more objects.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a type display device and a sorting device capable of displaying the types of three or more objects.

Means for Solving the Problems

[0006] To achieve the above objective, the present invention employs a first solution relating to a classification display device, which displays classification information of an object based on the type of the object, and includes a classification illumination device that generates classification light with different characteristics depending on the type as the classification information and irradiates the object with it.

[0007] In the present invention, as a second solution relating to a classification display device, the classification lighting device employs the means of simultaneously and individually irradiating a plurality of objects with the classification light, in the first solution described above.

[0008] In the present invention, as a third solution relating to the classification display device, in the first or second solution described above, the classification lighting device employs the means of irradiating the object being transported by the belt conveyor with the classification light from the back side of the belt conveyor.

[0009] In the present invention, as a fourth solution relating to the type display device, the means adopted is that in the first or second solution described above, the embodiment is the color of the classification light.

[0010] In the present invention, as a fourth solution relating to the type display device, the means adopted in the first or second solution described above is that the type is the material of the object.

[0011] In the present invention, as a solution related to the sorting device, a means is adopted that includes a type display device according to the fourth solution described above, and a type inspection device that detects the type and outputs it to the type display device. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a classification display device and a sorting device that can display the types of three or more objects. [Brief explanation of the drawing]

[0013] [Figure 1]A block diagram showing the functional configuration of a sorting device and a sorting device according to one embodiment of the present invention. [Figure 2] These are a side view (a) and a top view (b) showing the mechanical configuration of a classification display device and a sorting device according to one embodiment of the present invention. [Figure 3] This is a flowchart showing the operation of a sorting device and a sorting device according to one embodiment of the present invention. [Figure 4] This is a schematic diagram (a) showing the detection of waste plastic containers in one embodiment of the present invention, and a schematic diagram (b) showing the lighting configuration. [Modes for carrying out the invention]

[0014] One embodiment of the present invention will be described below with reference to the drawings. As shown in Figure 1, the type display device A according to this embodiment constitutes a sorting device C together with the type inspection device B.

[0015] This type display device A generates sorting light P, which varies in appearance depending on the material (type) of the waste plastic container X (object) based on the material inspection results of the waste plastic container X by the type inspection device B, and irradiates the waste plastic container X with it. In addition, the type inspection device B in this embodiment detects the material of the waste plastic container X by irradiating it with inspection light K of a predetermined wavelength, and outputs the material as the material inspection result to the type display device A.

[0016] In this embodiment, the waste plastic container X is made of a light-transmitting material (for example, transparent plastic) and is supplied to the sorting device C by being transported in a straight line by an input conveyor Y, as shown in Figure 2. The input conveyor Y is an input conveying device that has a mounting surface (conveying surface) of a predetermined height and width and feeds the waste plastic container X placed on the mounting surface (conveying surface) into the sorting device C.

[0017] The waste plastic container X is placed at a random position on the placement surface (transport surface) of the input conveyor Y and in a random orientation on the placement surface (transport surface) of the input conveyor Y. Such a waste plastic container X is transported toward the sorting device C by the operation of the input conveyor Y.

[0018] As shown in FIG. 1, the sorting device C provided with the type display device A and the type inspection device B includes an inspection lighting device 1, a line sensor 2, a pickup conveyor 3, a rotary encoder 4, an operation device 5, an arithmetic device 6, and a sorting lighting device 7.

[0019] Among the components of such a sorting device C, some functions of the inspection lighting device 1, the line sensor 2, and the arithmetic device 6 constitute the type inspection device B. Also, the pickup conveyor 3, the rotary encoder 4, the operation device 5, the remaining functions of the arithmetic device 6, and the sorting lighting device 7 constitute the type display device A. Further, the pickup conveyor 3 corresponds to the belt conveyor of the present invention.

[0020] The inspection lighting device 1 is a lighting device that irradiates the waste plastic container X with inspection light K for inspecting the material of the waste plastic container X. As shown in FIG. 2, this inspection lighting device 1 is a linear light emitter provided between the pickup conveyor 3 and the input conveyor Y, and is parallel and facing the line sensor 2 at a predetermined distance.

[0021] The inspection lighting device 1 emits the inspection light K toward the line sensor 2 from the long gap formed between the pickup conveyor 3 and the input conveyor Y. That is, this inspection lighting device 1 is parallel and facing the line sensor 2 in the vertical direction, and irradiates the waste plastic container X input from the input conveyor Y to the sorting device C with the inspection light K from below.

[0022] As shown in Fig. 2(b), the inspection light K is smaller than the gap between the pickup conveyor 3 and the input conveyor Y, and has an irradiation range equal to or slightly longer than the widths of the pickup conveyor 3 and the input conveyor Y. That is, this inspection light K is selectively irradiated only on the waste plastic container X that passes through the gap between the pickup conveyor 3 and the input conveyor Y in a substantially horizontal direction without irradiating the pickup conveyor 3 and the input conveyor Y.

[0023] Here, the waste plastic container X has different light absorption wavelength bands depending on the material (type). For example, when there are five types of materials of the waste plastic container X to be separated by the separation device C, the inspection light K is set in a wavelength band that includes the light absorption wavelength bands of the five types of materials. That is, the inspection light K in the present embodiment has a wavelength band that includes all the light absorption wavelength bands of a plurality of types of waste plastic containers X with different materials.

[0024] Note that the wavelength band of the inspection light K is sufficient if it can identify the material of the waste plastic container X as the object, and it is not necessarily required to include all of the light absorption wavelength bands of a plurality of types of waste plastic containers X. That is, it is sufficient if it includes a part of each of the light absorption wavelength bands of a plurality of types of waste plastic containers X (objects).

[0025] For example, five types of transparent plastic materials are known, such as acrylic resin (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polyvinyl chloride (PVC), and polystyrene (PS). These five types of waste plastic containers X all have different light absorption wavelengths. That is, the waste plastic container X1 made of acrylic resin has a first light absorption wavelength band E1.

[0026] Furthermore, the polycarbonate waste plastic container X2 has a second light absorption wavelength band E2, and the polyethylene terephthalate waste plastic container X3 has a third light absorption wavelength band E3. In addition, the polyvinyl chloride waste plastic container X4 has a fourth light absorption wavelength band E4, and the polystyrene waste plastic container X5 has a fifth light absorption wavelength band E5.

[0027] Line sensor 2 is a linear photodetector that receives inspection light K (transmitted light) that has passed through the waste plastic container X. By receiving inspection light K (transmitted light) whose light intensity has been attenuated according to the light absorption wavelength band of the waste plastic container X, line sensor 2 outputs a detection signal to the computing device 6 that corresponds to the light absorption wavelength band of the waste plastic container X, i.e., the light intensity corresponding to the material of the waste plastic container X.

[0028] As shown in Figure 2, the line sensor 2 is positioned parallel to the inspection lighting device 1 in the vertical direction. In other words, the line sensor 2 is positioned above the inspection lighting device 1 at a predetermined distance.

[0029] The pickup conveyor 3 is a conveying device that transports waste plastic containers X based on operation commands input from the computing device 6. By operating in accordance with the operation commands from the computing device 6, the pickup conveyor 3 transports the waste plastic containers X that have been fed in from the input conveyor Y in the same direction as the input conveyor Y.

[0030] As shown in Figure 2, the pickup conveyor 3 comprises a conveyor belt 3a, a drive roller 3b, and a driven roller 3c. The conveyor belt 3a is an endless belt that is light-transmitting and is supported in a substantially horizontal position by the drive roller 3b and the driven roller 3c, which are provided at a predetermined distance apart. This conveyor belt 3a is, for example, a white belt and is light-transmitting to visible light.

[0031] The drive roller 3b and the driven roller 3c are installed inside the conveyor belt 3a and at a predetermined distance apart so as to be parallel to each other in the horizontal direction. These drive roller 3b and driven roller 3c support the conveyor belt 3a in a position that extends horizontally. The drive roller 3b is a cylindrical roller installed on the leading end side of the conveyor belt 3a and adds conveying power to the conveyor belt 3a. The driven roller 3c is a cylindrical roller installed on the leading end side of the conveyor belt 3a.

[0032] As shown in Figure 2, such a pickup conveyor 3 is installed adjacent to the input conveyor Y with a predetermined gap between them. More specifically, the surface (conveying surface) of the conveyor belt 3a of the pickup conveyor 3 is set at the same height as the mounting surface of the input conveyor Y, and the width of the conveyor belt 3a is the same as the mounting surface of the input conveyor Y.

[0033] The rotary encoder 4 is a speed detector that detects the transport speed of the pickup conveyor 3. The rotary encoder 4 outputs a speed signal indicating the transport speed to the arithmetic unit 6. As shown in Figure 2, the rotary encoder 4 is installed, for example, on the drive roller 3b of the pickup conveyor 3.

[0034] In Figure 2, as an example, a rotary encoder 4 is shown installed on a drive roller 3b located at the front end of the pickup conveyor 3. However, the installation location of the rotary encoder 4 is not limited to the drive roller 3b; for example, it may be installed on a driven roller 3c located at the rear end of the pickup conveyor 3.

[0035] The operating device 5 is an input device for inputting the operator's operating instructions to the calculation device 6. This operating device 5 receives operating instructions for the sorting device C, that is, operating instructions for the type display device A and the type inspection device B, etc., and outputs them to the calculation device 6.

[0036] The calculation unit 6 is a software control device that uniformly controls the sorting device C, namely the type display device A and the type inspection device B. Specifically, the calculation unit 6 operates the inspection lighting device 1, the pickup conveyor 3 and the sorting lighting device 7 based on a predetermined control program, and uniformly controls the sorting device C by acquiring necessary information from the line sensor 2, the rotary encoder 4 and the operating device 5.

[0037] This calculation unit 6 identifies the individual material of multiple types of waste plastic containers X placed on the placement surface (conveying surface) of the pickup conveyor 3, based on the detection signal obtained from the line sensor 2 when the inspection lighting device 1 is activated. The material identification information for each type of waste plastic container X in the calculation unit 6 is the output information of the type inspection device B.

[0038] The arithmetic unit 6 generates a sorting signal based on the material identification information of each waste plastic container X and the speed signal from the rotary encoder 4, and outputs it to the sorting illumination device 7. This sorting signal is a two-dimensional color image signal, and its form differs depending on the material of each waste plastic container X. It also causes the sorting illumination device 7 to emit sorting light P, which moves in accordance with the transport of each waste plastic container X.

[0039] The sorting illumination device 7 is a two-dimensional color display device that displays sorting information for various types of waste plastic containers X as sorting light P based on sorting signals (color image signals) input from the image processing device 6. In other words, the sorting illumination device 7 generates sorting light P in different forms for each material (type) of waste plastic container X and irradiates multiple waste plastic containers X simultaneously and individually.

[0040] As shown in Figure 2, this sorting illumination device 7 is installed on the underside of the conveying surface of the conveying belt 3a, with its top surface serving as a display surface. In other words, this sorting illumination device 7 irradiates sorting light P onto the waste plastic containers X placed on the conveying belt 3a located above, from the underside (underside) of the conveying belt 3a.

[0041] Such sorting light P passes through the light-transmitting conveyor belt 3a and illuminates the waste plastic container X from below (back). Since the waste plastic container X is light-transmitting, the sorting light P also passes through the waste plastic container X, visually indicating the material (type) of the waste plastic container X to those around the pickup conveyor 3.

[0042] Furthermore, this sorting lighting device 7 irradiates each waste plastic container X with sorting light P, which has a different color (chromaticity) depending on the material of each waste plastic container X, as illumination light with different characteristics depending on the material of each waste plastic container X.

[0043] The sorting light device 7 illuminates, for example, an acrylic resin waste plastic container X1 with red sorting light P1. It also illuminates a polycarbonate waste plastic container X2 with green sorting light P2 and a polyethylene terephthalate waste plastic container X3 with blue sorting light P3. Furthermore, it illuminates a polyvinyl chloride polycarbonate waste plastic container X4 with pink sorting light P4 and a polystyrene waste plastic container X5 with orange sorting light P5.

[0044] Here, each waste plastic container X moves sequentially from the rear end to the front end on the pickup conveyor 3. The sorting lighting device 7 moves the irradiation area of ​​the sorting light P in synchronization with the movement of each waste plastic container X, so that sorting light P in a manner appropriate to the material continues to irradiate the corresponding waste plastic container X.

[0045] For example, an acrylic plastic waste container X1 is continuously illuminated with red sorting light P1 while being transported on the pickup conveyor 3. A polycarbonate plastic waste container X2 is continuously illuminated with green sorting light P2 while being transported on the pickup conveyor 3. A polyethylene terephthalate plastic waste container X3 is continuously illuminated with blue sorting light P3 while being transported on the pickup conveyor 3.

[0046] Furthermore, the polyvinyl chloride polycarbonate waste plastic container X4 is continuously illuminated with pink sorting light P4 while being transported on the pickup conveyor 3. The polystyrene waste plastic container X5 is continuously illuminated with orange sorting light P5 while being transported on the pickup conveyor 3.

[0047] In other words, the classification display device A according to this embodiment displays the material of multiple waste plastic containers X1 individually based on the color (chromaticity) of the classification light P. Furthermore, the sorting device C equipped with such a classification display device A sorts the multiple waste plastic containers X1 according to their material based on the color (chromaticity) of the classification light P.

[0048] Next, the operation of the sorting device C in this embodiment, that is, the operation of the type display device A and the type inspection device B, will be explained in accordance with the flowchart shown in Figure 3.

[0049] The sorting device C is activated when an operation instruction is input from the operating device 5 to the calculation device 6. Specifically, when the calculation device 6 receives an operation instruction from the operating device 5, it starts the operation of the inspection lighting device 1 and the pickup conveyor 3 based on the operation instruction, and sets the line sensor 2 from the idle state to the active state. Then, the sorting device C starts material inspection of the waste plastic containers X and displays the sorting status of the waste plastic containers X based on the results of the material inspection.

[0050] When sorting device C is activated, various types of waste plastic containers X are sequentially transferred from input conveyor Y to pickup conveyor 3. The pickup conveyor 3 then sequentially transports the various types of waste plastic containers X in the same direction as the input conveyor Y.

[0051] Here, inspection light K is shone from below upwards into the gap between the input conveyor Y and the pickup conveyor 3 by the inspection lighting device 1. Therefore, the various waste plastic containers X that are sequentially transferred from the input conveyor Y to the pickup conveyor 3 are shone with inspection light K from below, and the transmitted light of the inspection light K is sequentially detected by the line sensor 2.

[0052] The line sensor 2 then sequentially outputs a detection signal indicating the light intensity of the transmitted light to the computing device 6. The light intensity is the result of attenuation of the inspection light K according to the light absorption wavelength band of the various waste plastic containers X passing through the gap between the input conveyor Y and the pickup conveyor 3. In other words, the detection signal is a signal indicating the light absorption wavelength band of the various waste plastic containers X.

[0053] Furthermore, since the inspection light K is emitted from the inspection illumination device 1 continuously or in synchronization with the detection timing of the line sensor 2 for various waste plastic containers X moving in the transport direction, the light intensity exhibits a two-dimensional distribution of light absorption wavelength bands corresponding to the shape of the various waste plastic containers X. In other words, the detection signal is a time-series signal showing a two-dimensional distribution of light absorption wavelength bands corresponding to the shape of the various waste plastic containers X.

[0054] When the sorting device C is activated, the computing device 6 sequentially acquires these detection signals (step S1). Then, the computing device 6 detects individual waste plastic containers X based on the detection signals acquired sequentially in time series (step S2). That is, the computing device 6 sequentially compares the detection signals acquired sequentially in time series with multiple intensity thresholds to group the detection signals into multiple groups according to the light intensity, and detects each group as a waste plastic container X.

[0055] In step S2, the detection of waste plastic containers X determines the position and shape of the waste plastic containers X in the longitudinal direction of the line sensor 2 (the width direction of the pickup conveyor 3). At this stage, although the waste plastic containers X are individually detected (identified), the material of each individual waste plastic container X is not identified.

[0056] For example, as shown in Figure 4(a), the waste plastic container X1 made of acrylic resin is detected as a container having a first light absorption wavelength band E1. Similarly, the waste plastic container X2 made of polycarbonate is detected as a container having a second light absorption wavelength band E2, and the waste plastic container X3 made of polyethylene terephthalate is detected as a container having a third light absorption wavelength band E3. Furthermore, the waste plastic container X4 made of polyvinyl chloride polycarbonate is detected as a container having a fourth light absorption wavelength band E4, and the waste plastic container X5 made of polystyrene is detected as a container having a fifth light absorption wavelength band E5.

[0057] The computing unit 6 identifies the material of each individual waste plastic container X based on the multiple detection signals included in each group (waste plastic container X) (step S3). Specifically, the computing unit 6 determines a representative light intensity for each group from the detection signals of each group and identifies the material of each individual waste plastic container X by comparing the representative light intensity with material data stored in advance.

[0058] The above material data is a data table showing the relationship between the light intensity of the detected signal (i.e., the light absorption wavelength band of the waste plastic container X), the material of the waste plastic container X, and the sorting color. The computing unit 6 identifies the material and sorting color of each group, i.e., each individual waste plastic container X, by selecting the material corresponding to the representative light intensity of each group from the material data.

[0059] Then, the arithmetic unit 6 obtains the transport speed of the pickup conveyor 3, that is, the moving speed of the waste plastic container X, based on the speed signal input from the rotary encoder 4 (step S4). Then, the arithmetic unit 6 generates a sorting signal based on the sorting color identified in step S3 and the transport speed (moving speed) obtained in step S4 (step S5).

[0060] Then, the arithmetic unit 6 outputs the sorting signal to the sorting illumination device 7, causing multiple waste plastic containers X to be simultaneously and individually illuminated with sorting light of different types (colors) depending on the material (type) (step S6). For example, the sorting illumination device 7 illuminates an acrylic resin waste plastic container X1 with red sorting light P1 based on the sorting signal.

[0061] Furthermore, based on the sorting signal, the sorting lighting device 7 irradiates polycarbonate waste plastic containers X2 with green sorting light P2 and polyethylene terephthalate waste plastic containers X3 with blue sorting light P3. In addition, based on the sorting signal, the sorting lighting device 7 irradiates polyvinyl chloride polycarbonate waste plastic containers X4 with pink sorting light P4 and polystyrene waste plastic containers X5 with orange sorting light P5.

[0062] In reality, the sorting light displays the difference in material of the waste plastic container X by the difference in color, but in Figure 4(b), the different colors of the sorting light according to the material are represented by the difference in the fill pattern. In this embodiment, the sorting light is an illumination light whose color (appearance) differs according to the material (type) of the waste plastic container X.

[0063] Here, the detection of the waste plastic container X in step S2 above determines the position and shape of the waste plastic container X in the longitudinal direction of the line sensor 2 (width direction of the pickup conveyor 3) as the waste plastic container X moves in the transport direction, and as a result, the two-dimensional position and shape of the waste plastic container X are determined.

[0064] The arithmetic unit 6 generates a sorting signal using the positions and shapes of the various waste plastic containers X identified in step S2, as well as the various waste plastic containers X acquired in step S2. In other words, the sorting signal, which is a color image signal, causes the sorting illumination device 7 to display sorting light that moves in the direction of movement of the waste plastic containers X, following the movement of the various waste plastic containers X.

[0065] The sorting light moves in the direction of movement, following the movement of various waste plastic containers X, thereby illuminating the various waste plastic containers X on the pickup conveyor 3 with sorting light of a color (pattern) corresponding to their material. Personnel waiting around the pickup conveyor 3 can easily sort the waste plastic containers X according to their material by visually observing this sorting light.

[0066] According to this embodiment, it is possible to provide a type display device A and a sorting device C that can display the types of three or more waste plastic containers X (objects) by generating illumination light with different characteristics depending on the type and irradiating the object with it.Therefore, according to this embodiment, it is possible to facilitate the sorting of three or more waste plastic containers X (objects).

[0067] The present invention is not limited to the embodiments described above, and for example, the following modifications are possible. (1) In the above embodiment, different colored sorting lights P were used as sorting lights with different characteristics depending on the type, but the present invention is not limited thereto. The type of waste plastic container X (object) may be indicated using characteristics other than color. As characteristics other than color, for example, the sorting light may be a light pulse, and sorting lights with different emission periods of the light pulse depending on the type may be used. In this case, the characteristic that differs depending on the type is the emission period.

[0068] (2) In the above embodiment, the sortability of waste plastic containers X (objects) is improved by simultaneously and individually irradiating them with sorting light P of different colors according to the material (type). However, it is possible to suppress the decrease in the sortability of waste plastic containers X by devising the irradiation range of the sorting light P on the waste plastic containers X.

[0069] For example, the irradiation range of the sorting light P can be changed according to the size and shape of the waste plastic container X. That is, a narrow-range sorting light P can be used to irradiate relatively small waste plastic containers X, and conversely, a wide-range sorting light P can be used to irradiate relatively large waste plastic containers X. This makes it possible to suppress a decrease in the sortability of waste plastic containers X, even when, for example, the waste plastic containers X are placed in contact with or overlapping each other on the pickup conveyor 3.

[0070] (3) In the above embodiment, a light-transmitting white belt was used as the pickup conveyor 3, but the present invention is not limited thereto. When the target object is a transparent waste plastic container X, the visibility of the sorting light P is improved by using a light-transmitting white belt, but when the target object is a colored waste plastic container X that is light-transmitting, it is conceivable to use a conveyor belt other than a white belt, for example, a highly transparent conveyor belt.

[0071] (4) In the above embodiment, the rotary encoder 4 was used as a speed detector to detect the transport speed of the pickup conveyor 3, i.e., the moving speed of the waste plastic container X, but the present invention is not limited thereto. A speed detector other than the rotary encoder 4 may be used.

[0072] Furthermore, if the transport speed of the pickup conveyor 3 is known and constant, the speed detector can be omitted. In this case, the arithmetic unit 6 generates a sorting signal in step S5 based on the sorting color identified in step S3 and the transport speed data stored in advance.

[0073] (5) In the above embodiment, different types (colors) of sorting light were generated depending on the material of the waste plastic container X (object), but the present invention is not limited thereto. Instead of the material of the object, different types (colors) of sorting light may be generated depending on various inspection results related to the object, such as the appearance of the object (good product, defective parts, type of defect, etc.), internal condition, or weight.

[0074] (6) In the above embodiment, different colored light was used as a sorting light with different characteristics depending on the type, but the present invention is not limited thereto. For example, in addition to color, characters (marks, figures) may be displayed on the pickup conveyor 3.

[0075] (7) In the above embodiment, a pickup conveyor 3 is provided separately from the input conveyor Y, but the present invention is not limited thereto. The pickup conveyor 3 may be integrated with the input conveyor Y. That is, the sorting and lighting device 7 may be provided on a part of the transport conveyor in which the pickup conveyor 3 and the input conveyor Y are integrated.

[0076] In this case, since there is no gap between the input conveyor Y and the pickup conveyor 3, a transmissive photodetector consisting of the inspection lighting device 1 and line sensor 2 described above cannot be used. Therefore, in this case, a reflective photodetector will be used, in which the line sensor 2 detects the reflected light from the waste plastic container X (object) that is reflected by the inspection light K emitted from the inspection lighting device 1. [Explanation of Symbols]

[0077] Type A Display Device Type B Inspection Equipment C Separation device 1. Inspection lighting device 2-line sensor 3. Pickup conveyor 4 Rotary encoders 5 Operating device 6 Arithmetic unit 7 Separation lighting device

Claims

1. A classification display device that displays classification information of an object based on the type of object, The device includes a sorting illumination device that generates sorting light with different characteristics depending on the type, as sorting information, and irradiates the target object with it. The selective lighting device illuminates relatively small objects with the selective light having a narrow illumination range, and relatively large objects with the selective light having a wide illumination range. The aforementioned light separation is a light pulse, The above embodiment is a type display device characterized by being a light emission period.

2. The classification display device according to Claim 1, characterized in that the classification lighting device irradiates the object being transported by the belt conveyor with the classification light from the back side of the belt conveyor.

3. The type display device according to claim 1 or 2, characterized in that the type is the material of the object.

4. The type display device according to claim 3, A type inspection device that detects the type and outputs it to the type display device. A sorting device characterized by being equipped with the following features.

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