GB2570615A - Wiper mechanism for optical sorting machine - Google Patents

Wiper mechanism for optical sorting machine Download PDF

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Publication number
GB2570615A
GB2570615A GB1907774.2A GB201907774A GB2570615A GB 2570615 A GB2570615 A GB 2570615A GB 201907774 A GB201907774 A GB 201907774A GB 2570615 A GB2570615 A GB 2570615A
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United Kingdom
Prior art keywords
wiper
optical
section
transparent plate
drive mechanism
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1907774.2A
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GB2570615B (en
GB201907774D0 (en
Inventor
Kawamura Yoichi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Satake Engineering Co Ltd
Satake Corp
Original Assignee
Satake Engineering Co Ltd
Satake Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of GB201907774D0 publication Critical patent/GB201907774D0/en
Publication of GB2570615A publication Critical patent/GB2570615A/en
Application granted granted Critical
Publication of GB2570615B publication Critical patent/GB2570615B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3425—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
    • B08B1/143—Wipes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0018—Sorting the articles during free fall
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
    • G01N2021/152—Scraping; Brushing; Moving band
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/85—Investigating moving fluids or granular solids
    • G01N2021/8592—Grain or other flowing solid samples

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sorting Of Articles (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

Provided is a wiper mechanism for an optical sorting machine, whereby a wiper reciprocating drive mechanism is not fouled by dust or the like, and a transparent plate of an optical part can be cleaned. The wiper mechanism for the optical part in the optical sorting machine has a falling space in which a sorted object falls, and a sealed space in which an optical detection means for detecting the sorted object is disposed. The optical part of the optical sorting machine has a transparent plate for enabling detection of the sorted object by the optical detection means in a partition wall between the spaces. A wiper for coming in contact with the transparent plate and cleaning the transparent plate is disposed in the falling space of the optical part, and a reciprocating drive mechanism for causing the wiper to slide along the transparent plate is disposed in the sealed space. Movable parts of the wiper and the reciprocating drive mechanism are connected so as to be integrally movable by a magnetic force via the partition wall between the spaces.

Description

[Document Name] Description [Title of Invention] WIPER MECHANISM FOR OPTICAL SORTER [Technical Field]
The present invention relates to an optical sorter that sorts granular matters such as grains and resin pellets or sheet materials such as sheets of dried nori or edible seaweed based on colors or the like, and particularly relates to a wiper mechanism for cleaning a transparent plate of an optical section in the optical sorter .
[Background Art]
There has been conventionally well-known an optical sorter that sorts materials formed of grains such as rice, wheat, beans and nuts, resin pieces such as pellets and beads, fine products such as medical and pharmaceutical products, ores, or white sand, other granular matters, sheet products or the like into good products and defective products based on colors or the like, or excludes foreign matters or the like that are included in the material.
The aforementioned optical sorter detects granular matters or the like that fall from the lower end of the chute by the optical detection device in the optical section, determines the granular matters as good or defective based on the detection signals, sorts the matters by exclusion from the falling locus based on the determination result of good and defective, and ejects the granular matters according to good and defective.
Incidentally, in the aforementioned optical sorter, 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 plate of glass or the like is fitted to a partition wall at a side where the granular matters or the like are detected in the hermetically sealed space.
Thereby, the optical sorter can prevent the optical detection device from being stained by dust or the like that is scattered as the granular matters or the like are falling, and can enable detection of the granular matters by the optical detection device.
However, the aforementioned optical sorter has a problem of reduction in sorting precision, because the dust or the like adheres to the surface at the side of the space where the granular matters or the like fall, of the transparent plate in the optical section.
Therefore, there are proposed wiper mechanisms that clean the surface at the side of the space where the granular matters or the like fall, of the transparent plate, by a wiper (refer to Patent Literatures 1 to 3).
A wiper mechanism described in Patent Literature 1 has a screw shaft placed in the space where granular matters or the like fall, and reciprocally drives a wiper by using the motion of the screw shaft.
Further, a wiper mechanism described in Patent Literature 2 has an endless wire placed in the space where granular matters or the like fall, and reciprocally drives a wiper by using the motion of the endless wire.
Furthermore, a wiper mechanism described in Patent Literature 3 has a rodless cylinder placed in the space where the granular matters or the like fall, and reciprocally drives a wiper by using the motion of the rodless cylinder.
According to each of the wiper mechanisms described in the aforementioned Patent Literatures 1 to 3, the surface at the side of the space where the granular matters or the like fall, of the transparent plate in the optical section can be cleaned by the wiper, so that reduction in sorting precision of the optical sorter can be prevented.
However, the wiper mechanisms described in the aforementioned Patent Literatures 1 to 3 each has the reciprocal drive mechanism for the wiper placed in the space where the granular matters or the like fall, and has the problem of the reciprocal drive mechanism being stained by the dust or the like.
[Citation List] [Patent Literature] [Patent Literature 1] Microfilm of Japanese Utility Model
Application No. 55-33089 (Japanese Utility Model LaidOpen No. 56-137782) [Patent Literature 2] Japanese Patent Laid-Open No. 5817341 [Patent Literature 3] Japanese Patent Laid-Open No. 221980 [Summary of Invention] [Technical Problem]
Thus, an object of the present invention is to provide a wiper mechanism for an optical section in an optical sorter, in which a reciprocal drive mechanism of a wiper that cleans a transparent plate of an optical section is not stained by dust or the like.
[Solution to Problem]
In order to attain the above described object, a wiper mechanism for an optical section in an optical sorter according to an embodiment of the present invention, wherein the optical section of an optical sorter includes a falling space where matters to be sorted fall, and a hermetically sealed space where optical detection means that detects the matters to be sorted is placed, and includes a transparent plate that enables detection of the matters to be sorted by the optical detection means, in a partition wall of both the spaces, and a wiper that abuts on the transparent plate and cleans the transparent plate is placed in the falling 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 movable section of the reciprocal drive mechanism are connected to be integrally movable by a magnetic force through the partition wall of both the spaces .
In the wiper mechanism for an optical section in an optical sorter of the embodiment according to the present invention, the wiper that abuts on the transparent plate and cleans the transparent plate is placed in the falling space of the optical section, the reciprocal drive mechanism 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 partition wall of both the spaces, so that the reciprocal drive mechanism of the wiper is not stained by dust or the like.
The wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention is preferably such that magnets are attached to the respective wiper and movable section of the reciprocal drive mechanism, and both the magnets attract each other through the transparent plate, whereby the wiper and the movable section of the reciprocal drive mechanism are connected to be integrally movable.
In the wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention, in a case where the wiper which is reciprocally moving is interrupted by a human hand, an obstacle or the like and an unexpected force is applied to the wiper, the magnets included in the wiper and the movable section of the drive mechanism separate from each other, and only the movable section of the drive mechanism moves, whereby a person can be prevented from being injured by the wiper, and the obstacle and the wiper can be prevented from being damaged. Further, the movable section of the drive mechanism reciprocally moves again in a state where nothing interrupts movement of the wiper, whereby the magnet attached to the wiper and the magnet attached to the movable section of the drive mechanism attract each other, and separation of the wiper can be self-restored.
The wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention is preferably such that an engaging section that is C-shaped in section is provided at an upper portion of the wiper, a guide shaft that guides the wiper to move reciprocally is placed in the falling space, and the engaging section of the wiper is detachably engaged with the guide shaft.
In the wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention, the engaging section that is C-shaped in section is provided at the upper portion of the wiper, the guide shaft that guides the wiper to move reciprocally is placed in the falling space, and the engaging section of the wiper is detachably engaged with the guide shaft, whereby replacement work of the wiper becomes easy.
The wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention is preferably such that, an abutment section on the partition wall is provided at a tip end of the engaging section of the wiper .
In the wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention, if the abutment section on the partition wall is provided at the tip end of the engaging section of the wiper, even when the optical section is inclinedly disposed, the abutment section abuts on the partition wall, whereby the wiper does not rotate with the guide shaft as the axis, and the wiper can keep the state of abutting on the transparent plate. Further, even if the force to separate from the transparent plate acts on the wiper, the wiper can be prevented from separating from the transparent plate, since the wiper and the movable section of the reciprocal drive mechanism are connected to be integrally movable by a magnetic force through the partition wall of both the spaces, so that the wiper can be prevented from separating from the transparent plate.
The wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention is preferably such that, while the reciprocal drive mechanism includes a lead screw, a reflection plate and a second wiper that abuts on the reflection plate are placed at a side portion of the falling space, and rotation of the lead screw is transmitted to a swing shaft of the second wiper via a power transmission mechanism, whereby the wiper and the second wiper are made integrally drivable.
The wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention can clean the reflection plate without providing a new drive source, if while the reciprocal drive mechanism includes the lead screw, the reflection plate and the second wiper that abuts on the reflection plate are placed at the side portion of the falling space, rotation of the lead screw is transmitted to the swing shaft of the second wiper via the power transmission mechanism, and thereby the wiper and the second wiper are made integrally drivable.
Further, the wiper mechanism for an optical section in an optical sorter according to the embodiment of the present invention can keep the effect of the reflection plate by cleaning an upper side and a lower side of the reflection plate by the second wiper, if the optical section includes the light source/background module that emits light toward the matters to be sorted that flow in the detection position from above and below.
[Advantageous Effect of Invention]
According to the present invention, the wiper mechanism for an optical section in an optical sorter, in which 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] [Figure 1]
Figure 1 is a perspective view of an optical sorter.
[Figure 2]
Figure 2 is a perspective view of an optical unit.
[Figure 3]
Figure 3 is a plan view of the optical unit.
[Figure 4]
Figure 4 is a sectional perspective view of the optical unit and is an explanatory view of an inside of a falling space.
[Figure 5]
Figure 5 is a sectional view taken along B-B in Figure 3.
[Figure 6]
Figure 6 is a perspective view of a wiper mechanism.
[Figure 7]
Figure 7 is an explanatory view of a lead screw.
[Figure 8]
Figure 8 is an explanatory view of a state of attaching a wiper.
[Figure 9]
Figure 9 is a right side view of the wiper mechanism.
[Figure 10]
Figure 10 is a plan view of a side wiper module.
[Figure 11]
Figure 11 is an internal structural view of the side wiper module.
[Description of Embodiments]
An embodiment of the present invention will be described with reference to the drawings.
<Optical sorter>
Figure 1 shows a perspective view of an example of an optical sorter.
The optical sorter 1 includes a granular matter supply section 2 that supplies granular matters, an optical section 3 that sorts granular matters, and a discharge section 4 that discharges the granular matters after sorted.
The granular matter supply section 2 includes a raw material tank not illustrated, and a chute 21 that supplies granular matters in the raw material tank to the optical section 3.
The optical section 3 includes an optical unit 30 that is installed in a predetermined position of the optical sorter 1, and sorts the granular matters which are supplied from the granular matter supply section 2.
The discharge section 4 includes a discharge hopper not illustrated that discharges the granular matters that are sorted by the optical section 3 according to good and defective .
The optical unit 30 is obtained by unitizing the optical section 3 by integrating an optical detection device that detects granular matters, an ejector device that excludes granular matters, a signal processing circuit board that processes a detection signal of the optical detection device and performs determination of good or defect of the granular matters, and an ejector drive circuit board that drives the ejector device based on a result of determination of good or defect of the signal processing circuit board, with a casing 31.
Further, the determination of good or defective of granular matters in the optical section 3 is not limited to determination of a good product or a defective product of a material that is granular matters, but also includes determination of a material and foreign matters that are included in the material, determination of the kind of material and the like.
In the granular matter supply section 2, the granular matters that are fed out from the raw material tank flows down on a surface of the chute 21, and freely falls along a predetermined trajectory from a lower end of the chute 21.
The granular matters that freely fall are detected by the optical detection device in the optical section 3, and detection signals of the optical detection device are processed in the signal processing circuit board and are determined as good or defective. Subsequently, based on the good or defective determination result, the ejector device is driven by the ejector drive circuit board, and the granular matters are excluded from the falling trajectory by the ejector device to be sorted into the good product and defective product.
The granular matters that are sorted into good and defective products are discharged from the discharge hopper according to good and defective in the discharge section 4.
<Optical section>
Figure 2 shows a perspective view of the optical unit. Figure 3 shows a plan view of the optical unit.
The optical unit 30 includes the casing 31 having a falling space SI for granular matters in a center.
The casing 31 is configured mainly by side frames 32a and 32b, cylindrical covers 34a and 34b, top plates 37a and 37b, and a side covers 50 and 50.
In the casing 31, a pair of optical detection devices not illustrated are placed in front and rear of the falling space SI, the ejector device is placed in a rear side in the falling space SI, and the signal processing circuit board and the ejector drive circuit board not illustrated are placed in side parts of the falling space SI 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.
Figure 4 is a sectional perspective view of the optical unit, and shows an explanatory view of an inside of the falling space S. Figure 5 is a side sectional view of the optical unit and shows a sectional view taken along B-B in Figure 3.
The casing 31 has the pair of side frames 32a and 32b on both sides of the falling space SI, and both the side frames 32a and 32b are connected with a plurality of shafts 33 to configure a framework.
In front and rear of the falling space SI, between both the side frames 32a and 32b, a pair of cylindrical covers 34a and 34b that are formed of a composite plate of a resin and a metal and are formed by being folded are placed.
Inside the respective cylindrical covers 34a and 34b, respective components of the optical detection device such as camera modules 35a and 35b, light source/background modules 36a and 36 are respectively placed. In upper portions of the respective cylindrical covers 34a and 34b, openings for placing the camera modules 35a and 35b and the like into the respective cylindrical covers 34a and 34b are provided, and the respective openings are closed with the top plates 37a and 37b. Both the side frames 32a and 32b are provided with openings for disposing 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 side covers 50 and 50.
Here, the camera modules 35a and 35b have functions as light receiving sensors that detect granular matters.
The respective cylindrical covers 34a and 34b have packings applied to connection portions with other members, which are opening portions, and have insides as hermetically sealed spaces S2.
Openings are provided at the falling space SI sides 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 falling space SI are fitted to the respective openings. Further, front wipers 61 and 61 that will be described later are provided on surfaces at the falling space SI sides of the respective glass plates 38a and 38b.
To the openings that are provided at the falling space SI sides of the respective cylindrical covers 34a and 34b, transparent plates formed of another material can be fitted, in place of the glass plates 38a and 38b.
The respective side frames 32a and 32b integrally have end plates 41 and 41 that configure both side walls of the falling space SI, and a pair of mirrors 42 and 42 for ensuring light amounts in both side portions of the falling space SI are fitted onto inner surfaces at falling space SI sides that are at upper portions of the respective end plates 41 and 41. Side wipers 81 and 81 that will be described later are provided on front surfaces of the respective mirrors 42 and 42, and side wiper modules that will be described later and operate the respective side wipers 81 and 81 are placed outside of the respective end plates 41 and 41.
To the inner surfaces at the falling space SI sides that are at the upper portions of the respective end plates 41 and 41, reflection plates formed of another material can be fitted, in place of the mirrors 42 and 42.
At a rear side in the falling space SI, a valve module 45 including a nozzle, a valve and a manifold is placed. Further, a scattering prevention plate 46 is placed to face the valve module 45 at a front side in the falling space SI.
The valve module 45 configures the ejector device, and is connected to an air pipe 47 that is placed in the cylindrical cover 34b in the rear of the falling space SI.
Under the respective side wiper modules, outside the respective end plates 41 and 41, a signal processing circuit board 48 that processes detection signals of the optical detection device and performs good or defective determination of granular matters, and an ejector drive circuit board 49 that drives the ejector device based on the good or defective determination result of the signal processing circuit board 48 are placed respectively.
The side covers 50 and 50 are fitted to outer end portions of the respective frames 32a and 32b outside the signal processing circuit board 48 and the ejector drive circuit board 49.
<Wiper mechanism!
Figure 6 shows a perspective view from a right side in 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 state of attaching a wiper. Figure shows a right side view of the wiper mechanism. Figure shows a plan view of a side wiper module. Figure 11 shows an internal structural view of the side wiper module .
In the embodiment of the present invention, the optical section 3 includes a pair of wiper mechanisms 60 that are placed in a front side and a rear side of the falling space SI and clean the respective glass plates 38a and 38b.
The pair of wiper mechanisms 60 have substantially same configurations, so that in this case, the wiper mechanism 60 that is placed at the rear side of the falling space SI will be described as an example.
The wiper mechanism 60 includes a front wiper 61 that is placed at a falling space SI side of the optical section 3 and abuts 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 wiper 61.
The front wiper 61 has a wiper frame 62, a wiper blade 63 of a rubber, for example, is fixedly attached to the wiper frame 62, and the wiper blade 63 abuts on the glass plate 38b. Further, in the wiper frame 62, a magnet fitting section 64 is formed above a position where the wiper blade 63 is fixedly attached, and a magnet 65 is fitted to the magnet fitting section 64.
At an upper portion of the wiper frame 62, an engaging section 66 that is C-shaped in section is provided, and an abutment section 67 is provided further at a tip end of the engaging section 66.
At an upper front surface of the glass plate 38b in the falling space SI, a guide shaft 68 that guides movement of the front wiper 61 is placed. In the front wiper 61, the engaging section 66 is detachably engaged with the guide shaft 68.
Further, in the front wiper 61, a tip end of the abutment section 67 abuts on the cylindrical cover 34b that is located above the glass plate 38b.
The front wiper module 71 includes a lead screw 72, a motor 73 that rotationally drives the lead screw 72, a nut 74 that is fitted to the lead screw 72 and reciprocally moves with rotation of the lead screw 72, and a guide shaft 75 that guides movement of the nut 74.
At the nut 74, a magnet holder 76 that abuts on the glass plate 38b is integrally formed, and a magnet 77 is fitted to the magnet holder 76.
In the wiper mechanism 60, the magnet 65 which is fitted to the magnet fitting section 64 of the front wiper 61, and the magnet 77 which is fitted to the magnet holder 76 which is integrally formed at the nut 74 attract each other through the glass plate 38b, and thereby, the front wiper 61 and the nut 74 are connected integrally movably.
In the wiper mechanism 60 in the embodiment of the present invention, the front wiper 61 which abuts on the glass plate 38b is placed at the falling space Si side of the optical section 3, and the front wiper module 71 that reciprocally drives the front wiper 61 is placed in the hermetically sealed space S2, and the magnet 65 at the front wiper 61 side, and the magnet 77 at the front wiper module 71 side attract each other through the glass plate 38b, whereby the front wiper 61 and the nut 74 of the front wiper module 71 are connected integrally movably, so that the reciprocal drive mechanism of the front wiper 61 is not stained by dust or the like.
Further, in the wiper mechanism 60 in the embodiment of the present invention, the engaging section 66 which is C-shaped in section is provided at the upper portion of the wiper frame 62, the guide shaft 68 which guides movement of the front wiper 61 is placed on the front surface of the upper portion of the glass plate 38b in the falling space SI, and in the front wiper 61, the engaging section 66 is detachably engaged with the guide shaft 68, so that replacement work of the front wiper 61 becomes easy.
Further, in the wiper mechanism 60 in the embodiment of the present invention, the abutment section 67 which abuts on the cylindrical cover 34b which is located above the glass plate 38b is provided at the tip end of the engaging section 66 of the wiper frame 62, so that even when the optical unit 30 is disposed inclinedly, the front wiper 61 does not rotate with the guide shaft 68 (engaging section 66) an axis because the abutment section 67 abuts on the cylindrical cover 34b, and a state of abutting on the glass plate 38b is kept. Even if a force to separate from the glass plate 38b acts on the front wiper 61, the magnet 65 at the front wiper 61 side, and the magnet 77 at the front wiper module 71 side attract each other through the glass plate 38b, so that the front wiper 61 can be prevented from separating from the glass plate 38b.
In the wiper mechanism 60 in the embodiment of the present invention, in the case where the front wiper 61 which is reciprocally moving is interrupted by a human hand, an obstacle or the like and an unexpected force is applied to the front wiper 61, the magnet 65 at the front wiper 61 side and the magnet 77 at the front wiper module 71 side separate from each other, and only the movable section such as the nut 74 of the front wiper module 71 moves, whereby the front wiper 61 can be prevented from injuring a person, and the obstacle and the front wiper 61 can be prevented from being damaged. Further, the movable section such as the nut 74 is reciprocally moved again in the state where nothing interrupts the movement of the front wiper 61, whereby the magnet 65 at the front wiper 61 side and the magnet 77 at the front wiper module side attract each other, and separation of the front wiper 61 can be self-restored.
In the embodiment of the present invention described above, the magnet 65 at the front wiper 61 side, and the magnet 77 at the front wiper module 71 side attract each other through the glass plate 38b, but the magnet 65 and the magnet 77 also can attract each other through other partition wall portions that separate the falling space SI and the hermetically sealed space S2, such as the cylindrical cover 34b, for example.
In the embodiment of the present invention, the wiper mechanism 60 further includes a side wiper 81 that abuts on the mirror 42 which is fitted to both side portions on the inner surface of the falling space SI, and a side wiper module 91 that is placed outside the falling space SI.
In the side wiper 81, a rubber side wiper blade 83, for example, is fixedly attached to a side wiper frame 82, and the side wiper blade 83 abuts on the mirror 42.
The side wiper module 91 has a power transmission mechanism such as a gear train as illustrated in Figure 11, transmits rotation of the lead screw 72 to wiper shafts 104a and 104b of the side wiper 81 via the power transmission mechanism, and swings and drives the side wiper 81.
In a movable section forward path of the front wiper module 71 (a path in which the movable section such as the nut 74 of the front wiper module 71 moves in a leftward direction in Figure 8), the lead screw 72 and a pinion gear 78 shown in Figure 11 rotate counterclockwise, and a swing gear 98 rotates via an idler two-stage gear 94, an idler 95, and an idler 96. At this time, the swing gear 98 is meshed with a link drive gear 99, the link drive gear 99 rotates clockwise, and a lever gear 102 repeats forward and reverse rotations via a link 100 and a link arm 101. Further, by rotation of the lever gear 102, a wiper gear 103a and a wiper gear 103b perform forward and reverse rotations, and the side wipers 81 and 81 which are attached to the wiper gear 103a and the wiper gear 103b swing up and down.
In a movable section return path of the front wiper module 71, the lead screw 72 and the pinion gear 78 shown in Figure 11 rotate clockwise, and the swing gear 98 rotates via the idler two-stage gear 94, the idler 95, and the idler 96. At this time, the swing gear 98 is not meshed with the link drive gear 99, the drive gear 99 stops, and when the side wipers 81 and 81 are not in a horizontal state shown in Figure 11, the side wipers 81 and 81 are returned to the horizontal position by a force of a spring 108.
If the side wipers 81 and 81 are on an upper side, a projection which is provided in a center of a fixing plate 109 serves as a stopper for the spring arm 107b, a projection which is provided at a lower portion of a centering gear 105 is in a state of pressing a spring arm 107a leftward, and when the swing gear 98 and the link drive gear 99 are disengaged from each other, the spring arm 107a returns the projection portion of the centering gear 105 with the force of the spring 108, and returns the side wipers 81 and 81 to the horizontal state.
When the side wipers 81 and 81 are on a lower side, the projection which is provided in the center of the fixing plate 109 serves as a stopper for the spring arm 107a, the projection which is provided in the lower portion of the centering gear 105 is in a state of pushing out the spring arm 107b rightward, 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 centering gear 105 with the force of the spring 108, and returns the side wipers 81 and 81 to the horizontal state.
Accordingly, in the wiper mechanism 60 in the embodiment of the present invention, in the movable section forward path of the front wiper module 71, the side wipers 81 and 81 perform swing motion to clean an upper portion and a lower portion of the mirror 42, and in the movable section return path of the front wiper module 71, the side wipers 81 and 81 stop in the horizontal position where little light goes to the mirror 42 .
According to the wiper mechanism 60 in the embodiment of the present invention, the optical section 3 includes the light source/background modules 36a and 36b which emit light toward the granular matters that flow in the detection position from above and below, so that the effect of the mirror 42 can be kept by cleaning the upper side and the lower side of the mirror 42 by the side wipers 81 and 81.
In the wiper mechanism 60 in the embodiment of the present invention, while the front wiper module 71 includes the lead screw 72, the mirror 42 and the side wiper 81 which abuts on the mirror 42 are placed on the side portion in the falling space SI, and the rotation of the lead screw 72 is transmitted to the swing shaft 84 of the side wiper 81 via the power transmission mechanism, whereby the front wiper 61 and the side wiper 81 are made integrally drivable, so that the mirror 42 can be cleaned without providing a new drive source.
In the embodiment of the present invention, the example in which the wiper mechanism 60 is placed in the unitized optical section 3 is cited, but the wiper mechanism 60 also can be applied to the optical section 3 which is not unitized.
Further, in the embodiment of the present invention described above, the case where the wiper mechanism 60 is placed in the optical section of the optical sorter having granular matters flowing down on the surface of the chute as objects to be sorted is cited as the example, but the wiper mechanism 60 also can be placed in an optical section of an optical sorter that has granular matters, sheet-shaped matters, film-shaped matters or the like that are conveyed on a conveyer, for example, as the objects to be sorted.
The wiper mechanism of the present invention is not limited to the above described embodiment, but it goes without saying that a configuration of the wiper mechanism can be arbitrarily changed within a range without departing from the scope of the present invention.
[Industrial Applicability]
The wiper mechanism of the present invention can clean the transparent plate of the optical section without staining a reciprocal drive mechanism of a wiper by dust or the like, and therefore is extremely useful.
[Reference Signs List]
Optical sorter
Granular matter supply section
Optical section
Discharge section
Chute
Optical unit
Casing
32a, 32b Side frame
- 26 Shaft
34b Cylindrical cover
35b Camera module
3 6b Light source/background module
37b Top plate
38b Glass plate (transparent plate
End plate
Mirror (reflection plate)
Valve module
Scattering prevention plate
Air pipe
Signal processing circuit board
Ejector drive circuit board
Side cover
Wiper mechanism
Front wiper
Wiper frame
Wiper blade
Magnet fitting section
Magnet
Engaging section
Abutment section
Guide shaft
Front wiper module
Lead screw
Motor
75 Guide shaft
76 Magnet holder
77 Magnet
78 Pinion gear
81 Side wiper
82 Side wiper frame
83 Side wiper blade
91 Side wiper module
92 Case
93 Cover
94 Idler two-stage gear
95 Idler gear
96 Idler gear
97 Swing plate
98 Swing gear
99 Link drive gear
100 Link
101 Link arm
102 Lever gear
103a , 103b Wiper gear
104a , 104b Wiper shaft
105 Centering gear
106 Bearing plate
107a, 107b Spring arm
108 Spring
109 Fixing plate
SI falling space
S2 Hermetically sealed space

Claims (3)

  1. [Document Name] Claims [Claim 1]
    A wiper mechanism for an optical section in an optical sorter, wherein the optical section of an optical sorter includes a falling space where matters to be sorted fall, and a hermetically sealed space where an optical detection unit that detects the matters to be sorted is placed, and includes a transparent plate that enables detection of the matters to be sorted by the optical detection unit, in a partition wall of both the spaces, and a wiper that abuts on the transparent plate and cleans the transparent plate is placed in the falling 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 movable section of the reciprocal drive mechanism are connected to be integrally movable by a magnetic force through the partition wall of both the spaces .
  2. [Claim 2]
    The wiper mechanism for an optical section in an optical sorter according to claim 1, wherein magnets are attached to the respective wiper and movable section of the reciprocal drive mechanism, and both the magnets attract each other through the transparent plate, whereby the wiper and the movable section of the reciprocal drive mechanism are connected to be integrally movable.
  3. [Claim 3]
    The wiper mechanism of an optical section in an optical sorter according to claim 1 or 2, wherein an engaging section that is C-shaped in section is provided at an upper portion of the wiper, a guide shaft that guides the wiper to move reciprocally is placed in the falling space, and the engaging section of the wiper is detachably engaged with the guide shaft. [Claim 4]
    The wiper mechanism for an optical section in an optical sorter according to claim 3, wherein an abutment section on the partition wall is provided at a tip end of the engaging section of the wiper .
    [Claim 5]
    The wiper mechanism for an optical section in an optical sorter according to any one of claims 1 to 4, wherein while the reciprocal drive mechanism includes a lead screw, a reflection plate and a second wiper that abuts on the reflection plate are placed at a side portion of the falling space, and rotation of the lead screw is transmitted to a swing shaft of the second
    - 31 wiper via a power transmission mechanism, whereby the wiper and the second wiper are made integrally drivable.
GB1907774.2A 2016-12-27 2017-12-25 Wiper mechanism for optical sorter Expired - Fee Related GB2570615B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016253712A JP6862824B2 (en) 2016-12-27 2016-12-27 Wiper mechanism of optical sorter
PCT/JP2017/046481 WO2018123990A1 (en) 2016-12-27 2017-12-25 Wiper mechanism for optical sorting machine

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GB201907774D0 GB201907774D0 (en) 2019-07-17
GB2570615A true GB2570615A (en) 2019-07-31
GB2570615B GB2570615B (en) 2022-03-02

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KR (1) KR102406359B1 (en)
CN (1) CN110099754B (en)
BR (1) BR112019013395A2 (en)
GB (1) GB2570615B (en)
WO (1) WO2018123990A1 (en)

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CN112170286A (en) * 2020-09-22 2021-01-05 山东省科学院海洋仪器仪表研究所 Be used for marine instrument probe to prevent biological adhesion device
CN113510109B (en) * 2021-04-23 2022-10-14 安徽捷泰智能科技有限公司 Channel surface repairing device for color sorter
CN113624091B (en) * 2021-08-18 2024-01-02 深圳市菁菁教育网络技术有限公司 Detection device capable of testing quality of graduated scale
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KR20190102020A (en) 2019-09-02
CN110099754B (en) 2021-06-29
JP6862824B2 (en) 2021-04-21
GB2570615B (en) 2022-03-02
CN110099754A (en) 2019-08-06
WO2018123990A1 (en) 2018-07-05
BR112019013395A2 (en) 2020-03-03
GB201907774D0 (en) 2019-07-17
KR102406359B1 (en) 2022-06-07
JP2018103126A (en) 2018-07-05

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