BR112019013395A2 - CLEANING MECHANISM FOR OPTICAL CLASSIFIER - Google Patents

Abstract

a cleaning mechanism is provided for an optical classifier that can clean a transparent plate from an optical section without staining a reciprocating drive mechanism for a dust cleaner or the like. the cleaning mechanism for the optical section in the optical classifier has a drop space where the materials to be classified fall, and a hermetically sealed space where optical detection means that detect the materials to be classified are placed. the optical section of the optical classifier has a transparent plate that allows the detection of the materials to be classified by means of optical detection, in a dividing wall of both spaces. the cleaner that rests on the transparent plate and cleans the transparent plate is placed in the drop space of the optical section, and the reciprocal drive mechanism that slides the cleaner along the transparent plate is placed in the hermetically sealed space. the cleaner and a movable section of the reciprocal drive mechanism are connected to be integrally movable by a magnetic force through the dividing wall of both spaces.

Description

“CLEANING MECHANISM FOR OPTICAL CLASSIFIER”

Technical Field [0001] The present invention relates to an optical classifier that classifies granular materials, such as grains and pellets of resin or sheet materials, such as sheets of nori algae or edible algae based on colors or the like, and refers particularly a wiper mechanism to clean a transparent plate from an optical section in the optical sorter.

Technical Background [0002] An optical classifier that classifies materials formed by grains such as rice, wheat, beans and nuts, pieces of resin such as pellets and microspheres, fine products such as medical and pharmaceutical products, ores or white sand has been conventionally well known. , other granular materials, laminated products or the like in good products and defective products based on colors or the like, or exclude foreign or similar materials that are included in the material.

[0003] The optical classifier mentioned above detects granular or similar materials that fall from the lower end of the chute by the optical detection device in the optical section, determines the granular materials as good or defective based on the detection signals, classifies the materials by excluding the drop location based on the result of determining good and defective, and ejects granular materials according to good and defective.

[0004] Incidentally, in the optical classifier mentioned above, a hermetically sealed space is provided in the optical section, a light source, a background and a light receiving sensor that configure the optical detection device are placed in the hermetically sealed space and a transparent glass plate or similar is fitted on a partition wall on one side where granular or similar materials are detected in the hermetically sealed space.

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2/21 [0005] In this way, the optical classifier can prevent the optical detection device from being stained by dust or something similar that is spread as granular or similar materials are falling, and can enable the detection of granular materials by optical detection device.

[0006] However, the optical classifier mentioned above has a problem of reduced classification accuracy, due to the fact that dust or the like adheres to the surface on the side of the space where granular or similar matter falls, from the transparent plate in the section optics.

[0007] Therefore, cleaning mechanisms are proposed that clean the surface on the side of the space where granular or similar particles fall, from the transparent plate, by a cleaner (see Patent Literature 1 to 3).

[0008] A cleaning mechanism described in Patent Literature 1 has a screw shaft placed in the space where granular or similar materials fall, and, reciprocally, it drives a cleaner through the use of the screw shaft movement.

[0009] In addition, a cleaning mechanism described in Patent Literature 2 has an endless thread placed in the space where granular or similar materials fall, and, conversely, a cleaner through the use of the endless thread movement.

[0010] In addition, a cleaning mechanism described in Patent Literature 3 has a rodless cylinder placed in the space where granular or similar materials fall, and reciprocally activates a cleaner by using the rodless cylinder movement.

[0011] According to each of the cleaning mechanisms described in the Patent Literature 1 to 3 mentioned above, the surface on the side of the space where the granular or similar particles fall, from the transparent plate in the optical section can be cleaned by the cleaner, so that the reduction in the classification accuracy of the optical classifier can be

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3/21 avoided.

[0012] However, the cleaning mechanisms described in the Patent Literature 1 to 3 mentioned above have the reciprocal drive mechanism for the cleaner placed in the space where granular or similar materials fall, and it has the problem that the reciprocal drive mechanism is stained by dust or the like.

[0013] [Citation List] [0014] [Patent Literature] [0015] [Patent Literature 1] Microfilm of Utility Model Application No. JP 55-33089 (Utility Model Open to Public Inspection No. JP 56 -137782) [0016] [Patent Literature 2] Patent Open to

Public Inspection No. JP 58-17341 [0017] [Patent Literature 3] Patent Open to

Public Inspection No. JP 2-21980

Summary of the Invention

Technical Problem [0018] Thus, an objective of the present invention is to provide a wiper mechanism for an optical section in an optical classifier, in which a reciprocal drive mechanism for a wiper that wipes a transparent plate of an optical section is not stained by dust or similar.

Solution To The Problem [0019] In order to achieve the objective described above, a cleaning mechanism for an optical section in an optical classifier according to an embodiment of the present invention, [0020] in which the optical section of an optical classifier includes a drop space where the materials to be classified fall and a hermetically sealed space where the optical detection means that detects the materials to be classified is placed, and includes a transparent plate

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4/21 that allows the detection of the materials to be classified by means of optical detection, on a dividing wall of both spaces, and [0021] a cleaner that rests on the transparent plate and cleans the transparent plate is placed in the drop space from the optical section, a reciprocal drive mechanism that slides the wiper along the transparent plate is placed in the hermetically sealed space, and the wiper and a mobile section of the reciprocal drive mechanism are connected to be integrally movable by a magnetic force through the wall dividing both spaces.

[0022] In the wiper mechanism for an optical section in an optical classifier of the mode according to the present invention, the wiper that rests on the transparent plate and cleans the transparent plate is placed in the drop space of the optical section, the drive mechanism reciprocal that slides the wiper along the transparent plate is placed in the hermetically sealed space, and the wiper and the movable section of the reciprocal drive mechanism are connected to be integrally movable by the magnetic force through the dividing wall of both spaces, so that the reciprocal drive mechanism of the cleaner is not stained by dust or the like.

[0023] The cleaning mechanism for an optical section in an optical classifier according to the modality of the present invention is preferably such that [0024] magnets are connected to the respective cleaner and movable section of the reciprocating drive mechanism, and both magnets attract each other through the transparent plate, where the cleaner and the mobile section of the reciprocal drive mechanism are connected to be fully mobile.

[0025] In the cleaning mechanism for an optical section in an optical classifier according to the modality of the present invention, in a case where the cleaner that moves reciprocally is interrupted

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5/21 by a human hand, an obstacle or the like and a force is applied to the cleaner, the magnets included in the cleaner and the movable section of the drive mechanism separate from each other, and only the movable section of the drive mechanism moves, where an individual can be prevented from being hurt by the wiper, and the obstacle and wiper can be prevented from being damaged. In addition, the movable section of the drive mechanism moves again in a reciprocal manner in a state where nothing interrupts the movement of the cleaner, where the magnet connected to the cleaner and the magnet connected to the mobile section of the drive mechanism attract each other. , and wiper separation can be self-restored.

[0026] The cleaning mechanism for an optical section in an optical classifier according to the modality of the present invention is preferably such that [0027] a coupling section with a C-shaped section is provided in an upper part of the wiper, a guide shaft that guides the wiper to move reciprocally is placed in the drop space and the hitch section of the wiper is detachably attached to the guide shaft.

[0028] In the wiper mechanism for an optical section in an optical classifier according to the modality of the present invention, the coupling section that is C-shaped in the section is provided in the upper portion of the wiper, the guide axis that guides the wiper to move reciprocally is placed in the drop space, and the wiper section of the wiper is detachably engaged with the guide shaft, where the wiper replacement work becomes easy.

[0029] The cleaning mechanism for an optical section in an optical classifier according to the mode of the present invention is preferably such that, [0030] a support section on the partition wall is provided at one end of the section wiper coupling.

[0031] On the cleaning mechanism for an optical section

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6/21 in an optical classifier according to the modality of the present invention, if the support section on the partition wall is provided at the tip end of the wiper hitch section, even when the optical section is inclined, the section The support plate rests on the dividing wall, where the cleaner does not rotate with the guide axis like the geometric axis, and the cleaner can maintain the support state on the transparent plate. In addition, even if the force to separate the transparent plate acts on the cleaner, the cleaner can be prevented from separating from the transparent plate, since the cleaner and the movable section of the reciprocating drive mechanism are connected to be fully movable by a magnetic force through the dividing wall of both spaces, so that the cleaner can be prevented from separating from the transparent plate.

[0032] The cleaning mechanism for an optical section in an optical classifier according to the modality of the present invention is preferably such that, [0033] while the reciprocal drive mechanism includes a lead screw, a reflection plate and a second wiper that rests on the reflector plate are placed on a lateral part of the drop space and the rotation of the lead screw is transmitted to an articulated axis of the second wiper through a power transmission mechanism, where the wiper and the second wipers are made fully actionable.

[0034] The cleaning mechanism for an optical section in an optical classifier according to the modality of the present invention can clean the reflection plate without providing a new drive source, while while the reciprocal drive mechanism includes the lead screw, the reflection plate and the second wiper that rests on the reflection plate are placed on the lateral portion of the drop space, the rotation of the lead screw is transmitted to the articulated axis of the second wiper through the power transmission mechanism and thus , the cleaner

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7/21 and the second cleaner are made fully actionable.

[0035] In addition, the cleaning mechanism for an optical section in an optical classifier according to the modality of the present invention can maintain the effect of the reflection plate by cleaning the upper side and the lower side of the reflection plate by the second cleaner, if the optical section includes the light source / background module that emits light for the materials to be classified that flow in the detection position from above and below.

Advantageous Effect of the Invention [0036] According to the present invention, the wiper mechanism for an optical section in an optical classifier, wherein the reciprocal drive mechanism of the wiper that cleans the transparent plate of the optical section is not stained by dust or the like can be provided.

Brief Description Of Drawings [0037] Figure 1 is a perspective view of an optical classifier.

[0038] Figure 2 is a perspective view of an optical drive.

[0039] Figure 3 is a plan view of the optical drive.

[0040] Figure 4 is a perspective view in section of the optical unit and is an explanatory view of the interior of a fall space.

[0041] Figure 5 is a sectional view taken along line B-B in Figure 3.

[0042] Figure 6 is a perspective view of a cleaning mechanism.

[0043] Figure 7 is an explanatory view of a lead screw.

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8/21 [0044] Figure 8 is an explanatory view of a fixing state of a cleaner.

[0045] Figure 9 is a right side view of the cleaning mechanism.

[0046] Figure 10 is a plan view of a side wiper module.

[0047] Figure 11 is an internal structural view of the side wiper module.

Description of the Modalities [0048] An embodiment of the present invention will be described with reference to the drawings.

[0049] Optical classifier [0050] Figure 1 shows a perspective view of an example of an optical classifier.

[0051] The optical classifier 1 includes a granular matter supply section 2 that supplies granular matter, an optical section 3 that classifies granular materials and a discharge section 4 that discharges granular materials after being classified.

[0052] The granular material supply section 2 includes a raw material tank not shown and a chute 21 that supplies granular materials in the raw material tank for optical section 3.

[0053] The optical section 3 includes an optical unit 30 which is installed in a predetermined position of the optical classifier 1 and classifies the granular materials that are supplied from the granular matter supply section 2.

[0054] The discharge section 4 includes a non-illustrated discharge hopper that discharges granular materials that are classified by optical section 3 according to good and defective.

[0055] The optical unit 30 is obtained through the unification of the optical section 3 through the integration of a

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9/21 optical detection that detects granular materials, an ejector device that excludes granular materials, a signal processing circuit board that processes a detection signal from the optical detection device and performs the determination of good or defective granular materials, and an ejector drive circuit board that drives the ejector device based on a good or defective determination result of the signal processing circuit board, with an enclosure 31.

[0056] Furthermore, the determination of good or defective granular material in optical section 3 is not limited to the determination of a good product or a defective product of a material that is granular material, but also includes the determination of a material and foreign materials that are included in the material, determining the type of material and the like.

[0057] In the granular material supply section 2, the granular materials that are fed from the raw material tank flow downwards on a surface of the chute 21 and fall freely along a predetermined path from a lower end of the chute 21.

[0058] The free falling granular materials are detected by the optical detection device in optical section 3, and the detection signals from the optical detection device are processed on the signal processing circuit board and are determined to be good or defective. Subsequently, based on the result of the determination of good or defective, the ejector device is driven by the ejector drive circuit board, and granular materials are excluded from the fall path by the ejector device to be classified as a good product and a defective product.

[0059] Granular materials that are classified as good and defective products are discharged from the discharge hopper according to good and defective in the discharge section 4.

[0060] Optical Section

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10/21 [0061] Figure 2 shows a perspective view of the optical drive. Figure 3 shows a plan view of the optical drive.

[0062] Optical unit 30 includes housing 31 which has a drop space S1 for granular materials in a center.

[0063] The housing 31 is configured mainly by side frames 32a and 32b, cylindrical covers 34a and 34b, upper plates 37a and 37b, and side covers 50 and 50.

[0064] In housing 31, a pair of optical detection devices not shown is placed at the front and at the rear rear of the drop space S1, the ejector device is placed at a rear in the drop space S1 and the plate signal processing circuit and ejector drive circuit board not shown are placed on the sides of the drop space S1, respectively, and the pair of optical detection devices, the ejector device and the signal processing circuit board and the ejector drive circuit board are integrated.

[0065] Figure 4 is a perspective view in section of the optical unit and shows an explanatory view of an interior of the fall space S1. Figure 5 is a side sectional view of the optical drive and shows a sectional view taken along line B-B in Figure 3.

[0066] The enclosure 31 has the pair of side frames 32a and 32b on both sides of the drop space S1, and both side frames 32a and 32b are connected with a plurality of axes 33 to configure a structure.

[0067] At the front and at the rear fall space S1, between both side frames 32a and 32b, a pair of cylindrical covers 34a and 34b are placed which are formed by a plate composed of a resin and a metal and are formed for being folded.

[0068] Within the respective cylindrical covers 34a and 34b, the respective components of the optical detection device,

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11/21 as camera modules 35a and 35b, light source / background modules 36a and 36 are placed respectively. In the upper portions of the respective cylindrical covers 34a and 34b, openings are provided for placing the camera modules 35a and 35b and the like in the respective cylindrical covers 34a and 34b, and the respective openings are closed with the top plates 37a and 37b. Both side frames 32a and 32b are provided with openings for the arrangement of the light source / background modules 36a and 36b and the like in the respective cylindrical covers 34a and 34b, and the respective openings are closed by the side covers 50 and 50.

[0069] Here, camera modules 35a and 35b have functions such as light receiving sensors that detect granular matter.

[0070] The respective cylindrical covers 34a and 34b have packaging applied to connecting portions with other members, which are opening portions, and have interiors like hermetically sealed spaces S2.

[0071] The openings are provided on the sides of the fall space S1 of the respective cylindrical covers 34a and 34b and transparent glass plates 38a and 38b that configure a front wall and a rear wall of the fall space S1 are mounted in the respective openings. In addition, the front wipers 61 and 61 which will be described later are provided on surfaces on the sides of the drop space S1 of the respective glass plates 38a and 38b.

[0072] To the openings that are provided on the sides of the fall space S1 of the respective cylindrical covers 34a and 34b, transparent plates formed by another material can be attached, instead of the glass plates 38a and 38b.

[0073] The respective side frames 32a and 32b have integrally end plates 41 and 41 that configure both side walls of the fall space S1, and a pair of mirrors 42 and 42 for

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12/21 ensure that small quantities on both side portions of the drop space S1 are mounted on the internal surfaces on the sides of the drop space S1 which are in the upper portions of the respective end plates 41 and 41. The side cleaners 81 and 81 that later described are provided on the front surfaces of the respective mirrors 42 and 42, and the side wiper modules that will be described later and operate the respective side wipers 81 and 81 are placed outside the respective end plates 41 and 41.

[0074] To the internal surfaces on the sides of the fall space S1 that are in the upper portions of the respective end plates 41 and 41, reflection plates formed of another material can be fitted, in place of mirrors 42 and 42.

[0075] At the rear of the S1 drop space, a valve module 45 is placed that includes a nozzle, a valve and a manifold. In addition, a dispersion prevention plate 46 is placed to face valve module 45 on a front side in the drop space S1.

[0076] The valve module 45 configures the ejector device and is connected to an air tube 47 which is placed in the cylindrical cover 34b at the rear of the drop space S1.

[0077] Under the respective side wiper modules, outside the respective end plates 41 and 41, a signal processing circuit board 48 is placed which processes detection signals from the optical detection device and performs determination of good or granular materials defective, and an ejector drive circuit board 49 that drives the ejector device based on the result of the good or defective determination of the signal processing circuit board 48, respectively.

[0078] The side covers 50 and 50 are fitted to the outer end portions of the respective frames 32a and 32b outside the signal processing circuit board 48 and the circuit board of

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13/21 ejector drive 49.

[0079] Wiper mechanism [0080] Figure 6 shows a perspective view of a right side on the front which is an explanatory view of the wiper mechanism in the embodiment of the present invention. Figure 7 shows an explanatory view of a lead screw and a movable section of the lead screw. Figure 8 shows an explanatory view of a fixing state for a cleaner. Figure 9 shows a right side view of the wiper mechanism. Figure 10 shows a plan view of a side wiper module. Figure 11 shows an internal structural view of the side wiper module.

[0081] In the embodiment of the present invention, optical section 3 includes a pair of cleaning mechanisms 60 which are placed on a front side and a rear side of the drop space S1 and clean the respective glass plates 38a and 38b.

[0082] The pair of wiper mechanisms 60 has substantially the same configurations, so that in that case, the wiper mechanism 60 that is placed on the rear side of the drop space S1 will be described as an example.

[0083] The wiper mechanism 60 includes a front wiper 61 that is placed on one side S1 of the drop space of the optical section 3 and rests on the glass plate 38b, and a front wiper module 71 that is placed in the hermetically sealed space S2 inside the cylindrical cover 34b of the optical section 3 and reciprocally drives the front cleaner 61.

[0084] The front wiper 61 has a wiper frame 62, a wiper blade 63 of a rubber, for example, is firmly attached to wiper frame 62, and wiper blade 63 rests on glass plate 38b. In addition, on the wiper frame 62, a magnet engaging section 64 is formed above a position where the wiper blade 63 is fixedly fixed, and a magnet 65 is engaged in the wiping section.

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14/21 magnet mount 64.

[0085] In an upper portion of the wiper frame 62, an engagement section 66 is provided which is a C-shaped section, and a support section 67 is additionally provided at an end end of the engagement section 66.

[0086] On a top front surface of the glass plate 38b in the drop space S1, a guide shaft 68 is placed that guides the movement of the front wiper 61. In the front wiper 61, the hitch section 66 is detachably engaged to the guide shaft 68.

[0087] In addition, in the front cleaner 61, a tip end of the support section 67 rests on the cylindrical cover 34b which is located above the glass plate 38b.

[0088] The front wiper module 71 includes a lead screw 72, a motor 73 that rotates drive lead 72, a nut 74 that is attached to lead screw 72 and moves reciprocally with rotation lead screw 72 and a guide shaft 75 that guides the movement of nut 74.

[0089] In nut 74, a magnet retainer 76 that rests on the glass plate 38b is integrally formed, and a magnet 77 is attached to the magnet retainer 76.

[0090] In the wiper mechanism 60, the magnet 65 which is engaged in the magnet engaging section 64 of the front wiper 61, and the magnet 77 which is engaged in the magnet retainer 76 which is integrally formed in the nut 74 are attracted through the glass plate 38b and thus the front wiper 61 and nut 74 are integrally connected in a movable manner.

[0091] In the wiper mechanism 60 in the mode of the present invention, the front wiper 61 that rests on the glass plate 38b is placed on the side of the drop space S1 of the optical section 3, and the front wiper module 71 that activates in a way the front cleaner 61 is placed in the hermetically sealed space S2, and the magnet 65 on the side of the

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15/21 front wiper 61, and magnet 77 on the side of the front wiper module 71 attract each other through the glass plate 38b, where the front wiper 61 and the nut 74 of the front wiper module 71 are integrally connected so that the reciprocating drive mechanism of the front wiper 61 is not stained by dust or the like.

[0092] In addition, on the wiper mechanism 60 in the embodiment of the present invention, the engagement section 66 which has a C-shaped section is provided on the upper portion of the wiper frame 62, the guide shaft 68 that guides the wiper movement front plate 61 is placed on the front surface of the upper portion of the glass plate 38b in the descending space S1 and in the front cleaner 61, the engaging section 66 is detachably engaged with the guide axis 68, so that the work of replacing the front wiper 61 becomes easy.

[0093] Furthermore, in the cleaning mechanism 60 in the embodiment of the present invention, the support section 67 which rests on the cylindrical cover 34b which is located above the glass plate 38b is provided at the tip end of the engagement section 66 of the frame wiper 62, so that even when the optical drive 30 is inclined, the front wiper 61 does not rotate with the guide shaft 68 (engagement section 66) by a geometry axis due to the fact that the support section 67 it rests on the cylindrical cover 34b, and a state of support on the glass plate 38b is maintained. Even though a force to separate from the glass plate 38b acts on the front wiper 61, the magnet 65 on the side of the front wiper 61, and the magnet 77 on the side of the front wiper module 71 are attracted through the glass plate 38b, the front wiper 61 can be prevented from separating from the glass plate 38b.

[0094] In the wiper mechanism 60 in the mode of the present invention, in the event that the front wiper 61 moving in reciprocal movement is interrupted by a human hand, an obstacle or the like and an unexpected force is applied to the front wiper 61, the 65 magnet

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16/21 the front wiper side 61 and the magnet 77 on the front wiper module 71 are separated from each other, and only the movable section, such as nut 74 of the front wiper module 71 moves, where the front wiper 61 can prevented from injuring a person, and the obstacle and the front wiper 61 can be prevented from being damaged. In addition, the movable section, like nut 74, is moved back and forth in the state where nothing stops the movement of the front wiper 61, where magnet 65 on the front wiper side 61 and magnet 77 on the module side front wiper 71 attract each other, and the separation of front wiper 61 can be self-restored.

[0095] In the embodiment of the present invention described above, magnet 65 on the front side of the wiper 61 and magnet 77 on the side of the front wiper module 71 are attracted through the glass plate 38b, but the magnet 65 and the magnet 77 they can also attract each other through other parts of the dividing wall that separate the fall space S1 and the hermetically sealed space S2, such as the cylindrical cover 34b, for example.

[0096] In the embodiment of the present invention, the wiper mechanism 60 further includes a side wiper 81 which rests on the mirror 42 which is fitted on both sides on the inner surface of the drop space S1 and a side wiper module 91 which is placed outside the fall space S1.

[0097] In side wiper 81, a rubber side wiper blade 83, for example, is firmly attached to a side wiper frame 82, and the side wiper blade 83 rests on mirror 42.

[0098] The side wiper module 91 has a power transmission mechanism, such as a gear train, as illustrated in Figure 11, transmits the rotation of the lead screw 72 to the wiper axles 104a and 104b of the side wiper 81 via of the power transmission mechanism and articulates and drives the side cleaner 81.

[0099] On a path ahead of the mobile section of the front wiper module 71 (a path in which the mobile section as the

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17/21 nut 74 of the front wiper module 71 moves to the left in Figure 8), the lead screw 72 and a pinion gear 78 shown in Figure 11 rotate counterclockwise, and a turning gear 98 rotates through a two-stage pulley gear 94, a pulley 95 and a pulley 96. At that time, the turning gear 98 is engaged with a link drive gear 99, the link drive gear 99 rotates clockwise, and a lever gear 102 repeats forward and reverse rotations through a link 100 and a link arm 101. In addition, by rotating the lever gear 102, a wiper gear 103a and a wiper gear 103b perform rotations forward and reverse and side wipers 81 and 81 that are attached to wiper gear 103a and wiper gear 103b swing up and down.

[0100] On a return path of the mobile section of the front wiper module 71, the lead screw 72 and pinion gear 78 shown in Figure 11 rotate clockwise and the swing gear 98 rotates through the two-stage gear pulley 94, pulley 95 and pulley 96. At this time, swing gear 98 is not intertwined with link drive gear 99, drive gear 99 stops and, when side cleaners 81 and 81 are not in in a horizontal state shown in Figure 11, the side cleaners 81 and 81 are returned to the horizontal position by a spring force 108.

[0101] If the side cleaners 81 and 81 are on an upper side, a projection that is provided in the center of a fixing plate 109 serves as a stop for the spring arm 107b, a projection that is provided in a lower portion of a centering gear 105 is in a state of pressing a spring arm 107a to the left, and when oscillating gear 98 and link drive gear 99 are disengaged from each other, spring arm 107a returns the portion projection of the centering gear 105 with the spring force 108 and returns

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18/21 the side cleaners 81 and 81 for the horizontal state.

[0102] When the side cleaners 81 and 81 are on the underside, the projection that is provided in the center of the fixing plate 109 serves as a stop for the spring arm 107a, the projection that is provided in the lower portion of the locking mechanism centering 105 is in a state of pushing the spring arm 107b to the right, and when the swing gear 98 and the link drive gear 99 are disengaged from each other, the spring arm 107b returns the projection portion of the gear centering 105 with the force of the spring 108, and returns the side cleaners 81 and 81 to the horizontal state.

[0103] Consequently, in the wiper mechanism 60 in the mode of the present invention, in the advance path of movable section of the front wiper module 71, the side wipers 81 and 81 perform an oscillating movement to clean an upper and a lower portion of the mirror 42 and on the return path of the mobile section of the front wiper module 71, the side wipers 81 and 81 stop in the horizontal position, when little light goes to the mirror 42.

[0104] According to the cleaning mechanism 60 in the embodiment of the present invention, optical section 3 includes the light source / bottom modules 36a and 36b which emit light for the granular matter flowing in the top and bottom detection position , so that the effect of the mirror 42 can be maintained by cleaning the upper side and the lower side of the mirror 42 by the side cleaners 81 and 81.

[0105] In the wiper mechanism 60 in the mode of the present invention, while the front wiper module 71 includes the lead screw 72, the mirror 42 and the side wiper 81 that rest on the mirror 42 are placed on the side portion in the drop space S1 and the rotation of the lead screw 72 is transmitted to the oscillating axis 84 of the side wiper 81 through the power transmission mechanism, where the front wiper 61 and the side wiper 81 are made integrally so that the

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19/21 mirror 42 can be cleaned without providing a new drive source.

[0106] In the embodiment of the present invention, the example in which the cleaning mechanism 60 is placed in the unitized optical section 3 is cited, but the cleaning mechanism 60 can also be applied to the optical section 3 which is not unitized.

[0107] Furthermore, in the embodiment of the present invention described above, the case in which the cleaning mechanism 60 is placed in the optical section of the optical classifier having granular materials that fall on the trough surface as objects to be classified is cited as an example, but the wiping mechanism 60 can also be placed in an optical section of an optical classifier that has granular materials, leaf-shaped materials, film-shaped materials or the like that are transported on a conveyor, for example, as the objects to be classified .

[0108] The cleaning mechanism of the present invention is not limited to the embodiment described above, but it is clear that a configuration of the cleaning mechanism can be arbitrarily changed within a range without departing from the scope of the present invention.

Industrial Applicability [0109] The cleaning mechanism of the present invention can clean the transparent plate of the optical section without staining a reciprocating drive mechanism for a dust cleaner or the like and is therefore extremely useful.

[0110] List of Reference Signs

Optical classifier

Granular matter supply section

Optical section

Discharge section

Trough

Optical drive

Casing

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20/21

32a, 32b Side frame

Axis

34a, 34b Cylindrical cover

35a, 35b Camera module

36a, 36b Light source / background module

37a, 37b Top plate

38a, 38b Glass plate (transparent plate)

End plate

Mirror (reflection plate)

Valve module

Dispersion prevention plate

Air tube

Signal processing circuit board

Ejector drive circuit board

Side cover

Wiper mechanism

Front wiper

Wiper frame

Wiper blade

Magnet fitting section magnet

Hitch section

Support section

Guide shaft

Front wiper module

Lead screw

Motor

Nut

Guide shaft

Magnet retainer

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21/21 magnet

Pinion gear

Side cleaner

Side wiper frame

Side wiper blade

Side wiper module

Casing

Roof

Pulley two-stage gear

Pulley gear

Pulley gear

Oscillation plate

Swing gear

Link transmission gear

100 Link

101 Link Arm

102 Lever gear

103a, 103b Wiper gear

104a, 104b Wiper shaft

105 Centering gear

106 Support plate

107a, 107b Spring arm

108 spring

109 Fixing plate

Falling space

Hermetically sealed space

Claims (5)

1. Cleaner mechanism for an optical section in an optical classifier, characterized by the fact that the optical section of an optical classifier includes a drop space where the materials to be classified fall, and a hermetically sealed space where an optical detection unit that detects the materials to be classified is placed and includes a transparent plate that allows the detection of the materials to be classified by the optical detection unit, in a partition wall of both spaces, and a cleaner that rests on the transparent plate and cleans the plate transparent is placed in the drop space of the optical section, a reciprocal drive mechanism that slides the wiper along the transparent plate is placed in the hermetically sealed space, and the wiper and a mobile section of the reciprocal drive mechanism are connected to be integrally mobile by a magnetic force through the dividing wall of both spaces s. 2. Cleaner mechanism for an optical section in an optical classifier, according to claim 1, characterized by the fact that the magnets are fixed to the respective cleaner and to the mobile section of the reciprocal drive mechanism, and both magnets are attracted through the transparent plate, where the wiper and the movable section of the reciprocal drive mechanism are connected to be integrally movable. 3. Cleaner mechanism of an optical section in an optical classifier, according to claim 1 or 2, characterized by the fact that a coupling section that has a C-shaped section is provided in an upper part of the cleaner, an axis of guide that guides the wiper to move reciprocally is placed in the drop space, and the wiper section of the wiper is engaged Petition 870190059926, of 06/27/2019, p. 53/96 2/2 detachable to the guide shaft. 4. Wiper mechanism for an optical section in an optical classifier, according to claim 3, characterized by the fact that a support section in the partition wall is provided at one end of the wiper section. 5. Wiper mechanism for an optical section in an optical classifier, according to any one of claims 1 to 4, characterized in that, while the reciprocal drive mechanism includes a lead screw, a reflection plate and a second wiper that rests on the reflection plate are placed on a lateral portion of the drop space and the rotation of the lead screw is transmitted to an oscillation axis of the second wiper through a power transmission mechanism, in which the wiper and the second wipers are made fully actionable.