JP6862824B2 - Wiper mechanism of optical sorter - Google Patents

Description

The present invention relates to an optical sorter that sorts granules such as grains and resin pellets or sheet-like substances such as seaweed based on color and the like, and particularly for cleaning a transparent plate of an optical portion in the optical sorter. Regarding the wiper mechanism.

Conventionally, raw materials consisting of grains such as rice, wheat, beans, nuts, resin pieces such as pellets and beads, fine articles such as pharmaceuticals, ores, and shirasu, and other granules and sheets are used for coloring. There are well-known optical sorters that sort out non-defective products and defective products based on the above, and eliminate foreign substances and the like mixed in the raw materials.

The optical sorter detects particles and the like falling from the lower end of the chute by an optical detection device in the optical unit, determines the quality based on the detection signal, and excludes the particles from the drop trajectory based on the result of the quality determination. It is sorted and discharged according to quality.

By the way, in the optical sorter, a closed space is provided in the optical portion, a light source, a background and a light receiving sensor constituting the optical detection device are arranged in the closed space, and the granules in the closed space are arranged. A transparent plate such as glass is attached to the partition wall on the side where the above is detected.
As a result, the optical sorter prevents the optical detection device from being polluted by dust or the like scattered when the particles or the like fall, and enables the optical detection device to detect the particles. Can be done.

However, the optical sorter has a problem that the sorting accuracy is lowered because the dust or the like adheres to the surface of the transparent plate on the space side where the granules or the like fall in the optical portion.

Therefore, a wiper mechanism has been proposed in which the surface of the transparent plate on the space side where the granules and the like fall is cleaned by a wiper (see Patent Documents 1 to 3).

The wiper mechanism described in Patent Document 1 arranges a screw shaft in a space where particles and the like fall, and reciprocates the wiper by utilizing the operation of the screw shaft.
Further, the wiper mechanism described in Patent Document 2 disposes an endless wire in a space where particles and the like fall, and reciprocates the wiper by utilizing the operation of the endless wire.
Further, the wiper mechanism described in Patent Document 3 disposes a rodless cylinder in a space where particles and the like fall, and reciprocates the wiper by utilizing the operation of the rodless cylinder.

According to the wiper mechanism described in Patent Documents 1 to 3, the surface of the transparent plate on the space side where the granules and the like fall can be cleaned by the wiper in the optical unit. It is possible to prevent a decrease in sorting accuracy.
However, in each of the wiper mechanisms described in Patent Documents 1 to 3, the reciprocating drive mechanism of the wiper is arranged in the space where the particles or the like fall, and the reciprocating drive mechanism is contaminated by the dust or the like. There's a problem.

Microfilm of Jitsugyo No. 55-33089 (Jitsukai Sho No. 56-137782) Japanese Unexamined Patent Publication No. 58-17341 Japanese Unexamined Patent Publication No. 2-21980

Therefore, an object of the present invention is to provide a wiper mechanism for an optical unit in an optical sorter in which the reciprocating drive mechanism of the wiper for cleaning the transparent plate of the optical unit is not contaminated by dust or the like.

In order to achieve the above object, the wiper mechanism of the optical unit in the optical sorter of the present invention is used.
It has a falling space where the object to be sorted falls and a closed space in which the optical detection means for detecting the object to be sorted is arranged, and the partition wall of both spaces is used to detect the object to be sorted by the optical detection means. It is an optical part of an optical sorter having a transparent plate that enables it.
A wiper that comes into contact with the transparent plate to clean the transparent plate is provided in the falling space of the optical unit, and a reciprocating drive mechanism that slides the wiper along the transparent plate is provided in the closed space. It is characterized in that the reciprocating drive mechanism and the movable portion of the reciprocating drive mechanism are integrally movably connected by magnetic force via the partition walls of both spaces.

The wiper mechanism of the optical unit in the optical sorter of the present invention
Magnets are attached to each of the wiper and the movable portion of the reciprocating drive mechanism, and the wiper and the movable portion of the reciprocating drive mechanism are integrally movablely connected by attracting the two magnets via the transparent plate .

The wiper mechanism of the optical unit in the optical sorter of the present invention
An engaging portion having a C-shaped cross section is provided on the upper portion of the wiper, a guide shaft for reciprocating and guiding the wiper is arranged in the falling space, and the engaging portion of the wiper is detachably engaged with the guide shaft. To do .

The wiper mechanism of the optical unit in the optical sorter of the present invention
It is preferable to provide a contact portion with the partition wall at the tip of the engaging portion of the wiper.
Further, the wiper mechanism of the optical unit in the optical sorter of the present invention is
While the reciprocating drive mechanism includes a lead screw, a reflector and a second wiper that abuts on the reflector are provided on the side of the drop space, and the rotation of the lead screw is transmitted via a power transmission mechanism. It is preferable that the wiper and the second wiper can be integrally driven by transmitting the wiper to the swing shaft of the second wiper.

The wiper mechanism of the optical unit in the optical sorter of the present invention
It has a falling space where the object to be sorted falls and a closed space in which the optical detection means for detecting the object to be sorted is arranged, and the partition wall of both spaces is used to detect the object to be sorted by the optical detection means. It is an optical part of an optical sorter having a transparent plate that enables it.
A wiper that comes into contact with the transparent plate to clean the transparent plate is provided in the falling space of the optical unit, and a reciprocating drive mechanism that slides the wiper along the transparent plate is provided in the closed space. And the movable part of the reciprocating drive mechanism are connected to each other via the partition walls of both spaces so as to be integrally movable by magnetic force.
While the reciprocating drive mechanism includes a lead screw, a reflector and a second wiper that abuts on the reflector are provided on the side of the drop space, and the rotation of the lead screw is transmitted via a power transmission mechanism. by transferring the pivot shaft of the second wiper, characterized in that an integral drivable said second wiper and the wiper.

The wiper mechanism of the optical unit in the optical sorter of the present invention is a wiper that abuts on the transparent plate to clean the transparent plate in the falling space of the optical unit, and slides the wiper along the transparent plate in the closed space. Since the reciprocating drive mechanism for causing the wiper is arranged and the wiper and the movable portion of the reciprocating drive mechanism are integrally movablely connected by magnetic force via the partition walls of both spaces, the reciprocating drive mechanism of the wiper is contaminated by dust or the like. Never.

In the wiper mechanism of the optical portion in the optical sorter of the present invention, an engaging portion having a C-shaped cross section is provided above the wiper, a guide shaft for reciprocating and guiding the wiper is arranged in the falling space, and the wiper is provided. because of the engagement portion engages detachably on the guide shaft, thereby facilitating replacement of the wiper.

If the wiper mechanism of the optical portion in the optical sorter of the present invention is provided with an abutting portion to the partition wall at the tip of the engaging portion of the wiper, even if the optical portion is tilted, the said When the contact portion abuts on the partition wall, the wiper does not rotate about the guide shaft, and the state in which the wiper abuts on the transparent plate can be maintained. Further, even if a force that separates the wiper from the transparent plate acts on the wiper, the wiper and the movable portion of the reciprocating drive mechanism are integrally movably connected by magnetic force via the partition walls of both spaces. It is possible to prevent the wiper from separating from the transparent plate.

The wiper mechanism of the optical unit in the optical sorter of the present invention is a movable portion of the wiper and the drive mechanism when the wiper in reciprocating movement is blocked by a human hand or an obstacle and an unexpected force is applied. By separating the magnets provided in the windshield wiper and moving only the movable portion of the drive mechanism, it is possible to prevent the wiper from injuring a person or damaging the obstacle and the wiper. Further, the movable portion of the drive mechanism reciprocates again in a state where there is nothing blocking the movement of the wiper, so that the magnet attached to the wiper and the magnet attached to the movable portion of the drive mechanism are attracted to each other. , The separation of the wiper can be self-recovered.

In the wiper mechanism of the optical unit in the optical sorter of the present invention, the reciprocating drive mechanism is provided with a lead screw, while a reflector and a second wiper in contact with the reflector are arranged on the side of the drop space. Then, if the rotation of the lead screw is transmitted to the swing shaft of the second wiper via the power transmission mechanism so that the wiper and the second wiper can be integrally driven, a new drive source can be obtained. The reflector can be cleaned without providing.

Further, the wiper mechanism of the optical unit in the optical sorter of the present invention includes a light source / background module in which the optical unit irradiates light from above and below toward an object to be sorted flowing through a detection position. If there is, the effect of the reflector can be maintained by cleaning the upper side and the lower side of the reflector with the second wiper.

Perspective view of the optical sorter. Perspective view of the optical unit. Top view of the optical unit. It is a cross-sectional perspective view of an optical unit and is an explanatory view in a falling space. BB sectional view of FIG. Perspective view of the wiper mechanism. Explanatory drawing of the lead screw. Explanatory drawing of how to install the wiper. Right side view of the wiper mechanism. Top view of the side wiper module. Internal structure diagram of the side wiper module.

Embodiments of the present invention will be described with reference to the drawings.
<Optical sorter>
FIG. 1 shows a perspective view of an example of an optical sorter.
The optical sorter 1 includes a granular material supply unit 2 for supplying granular materials, an optical unit 3 for sorting the granular materials, and a discharge unit 4 for discharging the sorted particles.

The granular material supply unit 2 includes a raw material tank (not shown) and a chute 21 that supplies the granular material in the raw material tank to the optical unit 3.
The optical unit 3 is installed at a predetermined position of the optical sorter 1 and includes an optical unit 30 that sorts particles supplied from the granular material supply unit 2.
The discharge unit 4 includes a discharge hopper (not shown) that discharges the granules selected by the optical unit 3 according to quality.

The optical unit 30 includes an optical detection device that detects particles, an ejector device that eliminates particles, a signal processing circuit board that processes the detection signal of the optical detection device and determines the quality of the particles, and the signal. Based on the quality determination result of the processing circuit board, the ejector drive circuit board that drives the ejector device is integrated with the housing 31 to unitize the optical unit 3.
Further, the quality determination of the granular material in the optical unit 3 is not limited to the determination of the good product and the defective product of the raw material which is the granular material, and also the determination of the raw material and the foreign matter mixed in the raw material, the determination of the type of the raw material, and the like. It includes.

In the granular material supply unit 2, the granular material delivered from the raw material tank flows down on the surface of the chute 21 and freely falls from the lower end of the chute 21 along a predetermined locus.
The free-falling granular material is detected by the optical detection device in the optical unit 3, and the detection signal of the optical detection device is processed by the signal processing circuit board to determine the quality. Then, the ejector device is driven by the ejector drive circuit board based on the quality determination result, and the particles are excluded from the drop locus by the ejector device to be selected for quality.
The quality-selected granules are discharged from the discharge hopper according to quality in the discharge unit 4.

<Optical part>
FIG. 2 shows a perspective view of the optical unit. FIG. 3 shows a plan view of the optical unit.
The optical unit 30 includes a housing 31 having a falling space S1 for granular objects in the center.
The housing 31 is mainly composed of side frames 32a and 32b, tubular covers 34a and 34b, top plates 37a and 37b, and side covers 50 and 50.
The housing 31 includes a pair of optical detection devices (not shown) in front of and behind the fall space S1, an ejector device in the fall space S1 on the rear side, and signal processing not shown on the side of the fall space S1. The circuit board and the ejector drive circuit board are arranged and integrated.

FIG. 4 is a cross-sectional perspective view of the optical unit and shows an explanatory view in the falling space S1. FIG. 5 is a side sectional view of the optical unit and shows a sectional view taken along the line BB of FIG.
The housing 31 has a pair of side surface frames 32a and 32b on both sides of the drop space S1, and the both side surface frames 32a and 32b are connected by a plurality of shafts 33 to form a frame.

A pair of tubular covers 34a and 34b made of a composite plate of resin and metal and formed by bending are arranged between the side frames 32a and 32b and in front of and behind the drop space S1.
Inside each of the tubular covers 34a and 34b, each component of the optical detection device such as a camera module 35a and 35b and a light source / background module 36a and 36b is arranged. An opening for arranging the camera modules 35a, 35b and the like in the tubular covers 34a, 34b is provided on the upper portion of the tubular covers 34a, 34b, and the openings are the top plates 37a, 37b. Is closed by. The side frames 32a and 32b are provided with openings for arranging the light source / background modules 36a and 36b in the tubular covers 34a and 34b, and the openings are the side covers 50 and 50. Is closed by.
Here, the camera modules 35a and 35b have a function as a light receiving sensor for detecting particles.
Each of the tubular covers 34a and 34b is an opening, and packing is applied to a connecting portion with another member, and the inside is a closed space S2.

An opening is provided on the drop space S1 side of each of the tubular covers 34a and 34b, and transparent glass plates 38a and 38b constituting the front wall and the rear wall of the fall space S1 are mounted on the respective openings. .. Further, front wipers 61 and 61, which will be described later, are provided on the surfaces of the glass plates 38a and 38b on the drop space S1 side.
Instead of the glass plates 38a and 38b, a transparent plate made of another material can be attached to the openings of the tubular covers 34a and 34b on the drop space S1 side.

The side surface frames 32a and 32b integrally have end plates 41 and 41 constituting both side walls of the fall space S1, and are on the upper portion of the end plates 41 and 41 and on the inner surface of the fall space S1 side. Is equipped with a pair of mirrors 42, 42 for securing the amount of light on both sides of the falling space S1. Side wipers 81, 81 described later are provided on the front surfaces of the mirrors 42, 42, and side wiper modules described later for operating the side wipers 81, 81 are arranged outside the end plates 41, 41. Will be done.
Instead of the mirrors 42 and 42, a reflector made of another material can be mounted on the upper part of each of the end plates 41, 41 and on the inner surface on the drop space S1 side.

A valve module 45 including a nozzle, a valve, and a manifold is arranged in the drop space S1 on the rear side. Further, a shatterproof plate 46 is arranged in the drop space S1 on the front side facing the valve module 45.
The valve module 45 constitutes the ejector device and is connected to an air pipe 47 arranged in a tubular cover 34b behind the drop space S1.

A signal processing circuit board 48, which is outside the end plates 41 and 41 and below each side wiper module, processes the detection signal of the optical detection device to determine the quality of the granular material, and the signal processing. An ejector drive circuit board 49 for driving the ejector device is arranged based on the quality determination result of the circuit board 48.
Side covers 50 and 50 are attached to the outer ends of the frames 32a and 32b on the outside of the signal processing circuit board 48 and the ejector drive circuit board 49, respectively.

<Wiper mechanism>
FIG. 6 is an explanatory view of the wiper mechanism according to the embodiment of the present invention and shows a perspective view from the front right side. FIG. 7 shows an explanatory view of the lead screw and its movable portion. FIG. 8 shows an explanatory view of how the wiper is attached. FIG. 9 shows a right side view of the wiper mechanism. FIG. 10 shows a plan view of the side wiper module. FIG. 11 shows an internal structure diagram of the side wiper module.
In the embodiment of the present invention, the optical unit 3 includes a pair of wiper mechanisms 60 arranged on the front side and the rear side of the drop space S1 to clean the glass plates 38a and 38b.
Since the pair of wiper mechanisms 60 have substantially the same configuration, the wiper mechanism 60 disposed on the rear side of the drop space S1 will be described here as an example.

The wiper mechanism 60 is inside the front wiper 61, which is arranged on the drop space S1 side of the optical unit 3 and abuts on the glass plate 38b, and the tubular cover 34b of the optical unit 3, and is inside the closed space S2. The front wiper module 71 is provided so as to reciprocate the front wiper 61.

The front wiper 61 has a wiper frame 62, and for example, a rubber wiper blade 63 is fixed to the wiper frame 62, and the wiper blade 63 comes into contact with the glass plate 38b. Further, a magnet mounting portion 64 is formed on the wiper frame 62 above the position where the wiper blade 63 is fixed, and the magnet 65 is mounted on the magnet mounting portion 64.
An engaging portion 66 having a C-shaped cross section is provided on the upper portion of the wiper frame 62, and a contact portion 67 is provided on the tip of the engaging portion 66.

A guide shaft 68 for guiding the movement of the front wiper 61 is disposed in the drop space S1 and on the upper front surface of the glass plate 38b. The front wiper 61 is detachably engaged with the guide shaft 68 by the engaging portion 66.
Further, the front wiper 61 abuts the tip of the contact portion 67 on the tubular cover 34b located above the glass plate 38b.

The front wiper module 71 moves the lead screw 72, the motor 73 that rotationally drives the lead screw 72, the nut 74 that is mounted on the lead screw 72 and reciprocates with the rotation of the lead screw 72, and the nut 74. A guide shaft 75 for guiding is provided.
A magnet holder 76 that comes into contact with the glass plate 38b is integrally formed on the nut 74, and a magnet 77 is mounted on the magnet holder 76.

In the wiper mechanism 60, the magnet 65 mounted on the magnet mounting portion 64 of the front wiper 61 and the magnet 77 mounted on the magnet holder 76 integrally formed with the nut 74 are formed on the glass plate 38b. The front wiper 61 and the nut 74 are integrally and movably connected by being attracted to the front wiper 61.

The wiper mechanism 60 according to the embodiment of the present invention includes a front wiper 61 that abuts on the glass plate 38b on the drop space S1 side of the optical unit 3, and a front wiper module that reciprocates the front wiper 61 in the closed space S2. 71 is arranged, and the magnet 65 on the front wiper 61 side and the magnet 77 on the front wiper module 71 side are attracted to each other via the glass plate 38b to attract the nuts of the front wiper 61 and the front wiper module 71. Since the 74s are integrally movable, the reciprocating drive mechanism of the front wiper 61 will not be soiled by dust or the like.

Further, in the wiper mechanism 60 according to the embodiment of the present invention, an engaging portion 66 having a C-shaped cross section is provided on the upper portion of the wiper frame 62, and the front surface is provided on the upper front surface of the glass plate 38b in the drop space S1. A guide shaft 68 for guiding the movement of the wiper 61 is arranged, and the front wiper 61 is detachably engaged with the guide shaft 68 by the engaging portion 66, so that the front wiper 61 can be easily replaced. Become.

Further, the wiper mechanism 60 according to the embodiment of the present invention is provided with a contact portion 67 abutting on the tubular cover 34b located above the glass plate 38b at the tip of the engaging portion 66 of the wiper frame 62. Therefore, even when the optical unit 30 is tilted, the front wiper 61 rotates around the guide shaft 68 (engagement portion 66) when the contact portion 67 abuts on the tubular cover 34b. It does not move and is maintained in contact with the glass plate 38b. Even if a force that separates the front wiper 61 from the glass plate 38b acts on the front wiper 61, the magnet 65 on the front wiper 61 side and the magnet 77 on the front wiper module 71 side are attracted to the front wiper 61 via the glass plate 38b. Therefore, it is possible to prevent the front wiper 61 from being separated from the glass plate 38b.

The wiper mechanism 60 according to the embodiment of the present invention includes the magnet 65 on the front wiper 61 side and the magnet 65 on the front wiper 61 side when the front wiper 61 during reciprocating movement is blocked by a human hand or an obstacle and an unexpected force is applied. When the magnet 77 on the front wiper module 71 side is separated and only the movable part such as the nut 74 of the front wiper module 71 moves, the front wiper 61 may injure a person, or the obstacle and the front wiper may be injured. It is possible to prevent the 61 from being damaged. Further, by reciprocating the movable portion such as the nut 74 again in a state where there is nothing blocking the movement of the front wiper 61, the magnet 65 on the front wiper 61 side and the magnet 77 on the front wiper module 71 side are moved. It can be adsorbed and self-recovered from the front wiper 61.

In the embodiment of the present invention, the magnet 65 on the front wiper 61 side and the magnet 77 on the front wiper module 71 side are attracted to each other via the glass plate 38b. , It can also be adsorbed through another partition wall portion that separates the falling space S1 and the closed space S2.

In the embodiment of the present invention, the wiper mechanism 60 is further arranged on the inner surface of the fall space S1 and outside the side wiper 81 that abuts on the mirrors 42 mounted on both sides of the fall space S1 and the fall space S1. The side wiper module 91 is provided.
In the side wiper 81, for example, a rubber side wiper blade 83 is fixed to the side wiper frame 82, and the side wiper blade 83 comes into contact with the mirror 42.

As shown in FIG. 11, the side wiper module 91 has a power transmission mechanism such as a gear train, and the rotation of the lead screw 72 is transmitted to the wiper shafts 104a and 104b of the side wiper 81 via the power transmission mechanism. It transmits and swings the side wiper 81.

In the outward path of the movable portion of the front wiper module 71 (the path in which the movable portion such as the nut 74 of the front wiper module 71 moves to the left in FIG. 8), the lead screw 72 and the pinion gear 78 shown in FIG. 11 rotate counterclockwise. It rotates, 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 meshes with the ring drive gear 99, the ring drive gear 99 rotates clockwise, and the lever gear 102 repeats forward and reverse rotation via the link 100 and the link arm 101. Further, the rotation of the lever gear 102 causes the wiper gear 103a and the wiper gear 103b to rotate in the forward and reverse directions, and the wiper gear 103a and the side wipers 81 and 81 attached to the wiper gear 103b swing up and down.

In the return path of the movable portion of the front wiper module 71, the lead screw 72 and the pinion gear 78 shown in FIG. 11 rotate clockwise, and the swing gear 98 is passed through the idler two-stage gear 94, the idler 95, and the idler 96. Rotates. At this time, when the swing gear 98 does not mesh with the ring drive gear 99 and the ring drive gear 99 stops, and the side wipers 81 and 81 are not in the horizontal state shown in FIG. 11, the side wiper is driven by the force of the spring 108. 81 and 81 are pulled back to the horizontal position.

If the side wipers 81 and 81 are on the upper side, the protrusion provided at the center of the fixing plate 109 serves as a stopper for the spring arm 107b, and the protrusion provided at the lower part of the centering gear 105 causes the spring arm 107a to move to the left. In the extruded state, when the swing gear 98 and the ring drive gear 99 are disengaged, the spring arm 107a pulls back the protrusion of the centering gear 105 by the force of the spring 108, and the side wipers 81 and 81 are horizontal. Return to the state.

When the side wipers 81 and 81 are on the lower side, the protrusion provided at the center of the fixing plate 109 serves as a stopper for the spring arm 107a, and the protrusion provided at the lower part of the centering gear 105 serves as the spring arm 107b. When the swing gear 98 and the link drive gear 99 are disengaged, the spring arm 107b pulls back the protrusion of the centering gear 105 by the force of the spring 108, and the side wiper 81, Return 81 to the horizontal state.

Therefore, in the wiper mechanism 60 according to the embodiment of the present invention, the side wipers 81 and 81 swing around the movable portion outward path of the front wiper module 71 to clean the upper and lower parts of the mirror 42, and the front is cleaned. In the return path of the movable portion of the wiper module 71, the side wipers 81 and 81 stop at a horizontal position where there is little light toward the mirror 42.

According to the wiper mechanism 60 according to the embodiment of the present invention, the optical unit 3 includes light sources / background modules 36a and 36b that irradiate light from above and below toward the particles flowing through the detection position. By cleaning the upper side and the lower side of the mirror 42 with the side wipers 81, 81, the effect of the mirror 42 can be maintained.

In the wiper mechanism 60 according to the embodiment of the present invention, the front wiper module 71 is provided with a lead screw 72, while the mirror 42 and the side wiper 81 in contact with the mirror 42 are arranged on the side portion in the drop space S1. By transmitting the rotation of the lead screw 72 to the swing shaft 84 of the side wiper 81 via the power transmission mechanism, the front wiper 61 and the side wiper 81 can be integrally driven. The mirror 42 can be cleaned without providing a drive source.

In the embodiment of the present invention, the wiper mechanism 60 is arranged in the unitized optical unit 3 as an example, but it can also be applied to the non-unitized optical unit 3.

Further, in the embodiment of the present invention, the case where the wiper mechanism 60 is arranged in the optical portion of the optical sorter for sorting the granules flowing down on the surface of the chute is taken as an example. For example, granules, sheet-like substances, film-like substances and the like conveyed on a conveyor can be arranged in the optical portion of an optical sorter for sorting.

Needless to say, the wiper mechanism of the present invention is not limited to the above-described embodiment, and its configuration can be appropriately changed as long as it does not deviate from the scope of the present invention.

The wiper mechanism of the present invention is extremely useful because the reciprocating drive mechanism of the wiper is not contaminated by dust or the like and the transparent plate of the optical portion can be cleaned.

1 Optical sorter 2 Granular material supply unit 3 Optical unit 4 Discharge unit 21 Shoot 30 Optical unit 31 Housing 32a, 32b Side frame 33 Shaft 34a, 34b Cylindrical cover 35a, 35b Camera module 36a. 36b Light source / background module 37a, 37b Top plate 38a, 38b Glass plate (transparent plate)
41 End plate 42 Mirror (reflector)
45 Valve module 46 Scatter prevention plate 47 Air piping 48 Signal processing circuit board 49 Ejector drive circuit board 50 Side cover 60 Wiper mechanism 61 Front wiper 62 Wiper frame 63 Wiper blade 64 Magnet mounting part 65 Magnet 66 Engaging part 67 Contact part 68 Guide shaft 71 Front wiper module 72 Lead screw 73 Motor 74 Nut 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 Fixed plate S1 Falling space S2 Sealed space

Claims (4)

It has a falling space where the object to be sorted falls and a closed space in which the optical detection means for detecting the object to be sorted is arranged, and the partition wall of both spaces is used to detect the object to be sorted by the optical detection means. It is an optical part of an optical sorter having a transparent plate that enables it.
Wipers on the falling space of the optical unit to clean contact said transparent plate to said transparent plate, the said enclosed space arranged a reciprocating drive mechanism for sliding the wiper along said transparent plate, said wiper A magnet is attached to each of the movable parts of the reciprocating drive mechanism, and the two magnets are attracted to each other via the transparent plate to integrally move the wiper and the movable part of the reciprocating drive mechanism.
An engaging portion having a C-shaped cross section is provided on the upper portion of the wiper, a guide shaft for reciprocating and guiding the wiper is provided in the falling space, and the engaging portion of the wiper can be attached to and detached from the guide shaft. A wiper mechanism for an optical unit in an optical sorter characterized by engaging. Wiper mechanism of the optical unit in the claim 1 of the optical sorting machine in the engaging tip of the wiper providing the abutment to the partition wall. While the reciprocating drive mechanism includes a lead screw, a reflector and a second wiper that abuts on the reflector are provided on the side of the drop space, and the rotation of the lead screw is transmitted via a power transmission mechanism. The wiper mechanism of an optical unit in the optical sorter according to claim 1 or 2 , wherein the wiper and the second wiper can be integrally driven by transmitting the wiper to the swing shaft of the second wiper. It has a falling space where the object to be sorted falls and a closed space in which the optical detection means for detecting the object to be sorted is arranged, and the partition wall of both spaces is used to detect the object to be sorted by the optical detection means. It is an optical part of an optical sorter having a transparent plate that enables it.
A wiper that comes into contact with the transparent plate to clean the transparent plate is provided in the falling space of the optical unit, and a reciprocating drive mechanism that slides the wiper along the transparent plate is provided in the closed space. And the movable part of the reciprocating drive mechanism are connected to each other via the partition walls of both spaces so as to be integrally movable by magnetic force.
While the reciprocating drive mechanism includes a lead screw, a reflector and a second wiper that abuts on the reflector are provided on the side of the drop space, and the rotation of the lead screw is transmitted via a power transmission mechanism. A wiper mechanism of an optical unit in an optical sorter, characterized in that the wiper and the second wiper can be integrally driven by transmitting the wiper to the swing shaft of the second wiper.

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