CN102049391A - Screening device for foreign bodies in tea - Google Patents
Screening device for foreign bodies in tea Download PDFInfo
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- CN102049391A CN102049391A CN2010105307376A CN201010530737A CN102049391A CN 102049391 A CN102049391 A CN 102049391A CN 2010105307376 A CN2010105307376 A CN 2010105307376A CN 201010530737 A CN201010530737 A CN 201010530737A CN 102049391 A CN102049391 A CN 102049391A
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Abstract
The invention provides a screening device for foreign bodies, wherein transparent foreign bodies with photo polymerization property can be reliably removed. The device comprises chutes (1a, 1b), an imaging unit (3), a first light emitting unit (15), a second light emitting unit (16), a judgment unit (10) and an air nozzle (4). Tea goes from top to bottom through the chutes (1a, 1b). The first light emitting unit irradiates light to obtain the reflected light of the imaged body. The second light emitting unit irradiates light from the background of the imaged body. The judgment unit determines whether the imaged body is a foreign body or not according to the reflected light of the first light emitting unit (15) and the background light of the second light emitting unit (16) of the image obtained by the imaging unit (3). The air nozzle (4) blows off the foreign body to perform the screening operation. The screening device for foreign bodies removes the foreign bodies in tea when the tea goes through the chutes (1a, 1b). The imaging range of the imaging unit (3) and the region between the second light emitting unit (16) and the imaged body are equipped with slits (19c).
Description
Technical field
Thereby the present invention relates to be used for by make tealeaves at chute successively by screening and remove the foreign matter screening plant of the tealeaves of the foreign matter of in tealeaves, sneaking into.
Background technology
In the past, the foreign matter screening plant of following tealeaves has been proposed: to tealeaves irradiation blue light, utilize line-scan camera image units such as (1ine scan camera) that the image that obtains by its reverberation is made a video recording simultaneously, can screen the foreign matter (for example with reference to patent documentation 1) of in tealeaves, sneaking into.The foreign matter screening plant of this tealeaves constitutes to have: image units such as line-scan camera; Can shine the 1st luminescence unit of blue light to tealeaves; And irradiation is as the 2nd luminescence unit of the bias light of the background of the image that utilizes image unit to obtain.
And then, also possess the identifying unit that can judge by grade (level) difference of the reverberation of shooting thing and bias light, judge whether the captured thing of being made a video recording is foreign matter.Like this, in the foreign matter screening plant of above-mentioned existing tealeaves, the chlorophyll reaction that contains in utilization during, this blue light and the tealeaves and the character of generation red fluorescence to tealeaves irradiation blue light, under the situation that photographs this red fluorescence by image unit, be judged to be tealeaves, on the other hand, under the situation of this red fluorescence not, be judged to be foreign matter, so, can utilize this to select and screen tealeaves and foreign matter.
[patent documentation 1] TOHKEMY 2005-66434 communique
But in the foreign matter screening plant of above-mentioned existing tealeaves, there are the following problems.
For example, in tealeaves, sneaked under the situation of the transparent foreign matter that constitutes by transparent resin etc., when utilizing image unit that this transparent foreign matter is made a video recording, seen through, had whether be difficult to differentiate be the unfavorable condition of foreign matter from the bias light of the 2nd luminescence unit.Especially, in transparent foreign matter with optically focused effect (based on optically focused of lens effect), light from background is carried out optically focused, so, under the situation of utilizing image unit to make a video recording, reduce from the made a video recording reverberation of thing and the grade difference of bias light, whether existence is difficult to differentiate more is the unfavorable condition of foreign matter.
Summary of the invention
The present invention finishes in light of this situation, provides the foreign matter screening plant of following tealeaves: can screen and remove the transparent foreign matter with optically focused effect of sneaking into reliably in tealeaves.
The present invention the 1st aspect relates to a kind of foreign matter screening plant of tealeaves, and the foreign matter screening plant of this tealeaves has: chute, and its predetermined oblique angle sets, and can make tealeaves lead to the bottom from top; Image unit, its tealeaves that bottom from described chute is fallen is made a video recording to obtain image; The 1st luminescence unit, it is from this image unit side irradiates light, to obtain the reverberation from the thing of being made a video recording; The 2nd luminescence unit, it is from the background side irradiates light of the image that utilizes described image unit and take; Identifying unit, its according in the image that obtains by described image unit, from the reverberation of described the 1st luminescence unit with from the bias light of described the 2nd luminescence unit, judge whether by the shooting thing be foreign matter; And air nozzle, it blows away to be judged to be by this identifying unit and is the part of foreign matter or blows away and be judged to be the part that is not foreign matter, thus, make this part to fall with the different track of track that falls that forms based on described chute, thereby can screen, the foreign matter screening plant of this tealeaves is used for making tealeaves to pass through at described chute, thereby screening is also removed the foreign matter of sneaking in tealeaves, it is characterized in that, be provided with slit at the image pickup scope of described image unit and at described the 2nd luminescence unit with between by the shooting thing.
The present invention the 2nd aspect forms, and in the foreign matter screening plant of described tealeaves, it is characterized in that aspect the 1st, and described image unit comprises that image pickup scope constitutes the line-scan camera of wire, is formed with described slit along the image pickup scope of this wire.
The present invention the 3rd aspect forms, aspect the 1st or the 2nd in the foreign matter screening plant of described tealeaves, it is characterized in that, described slit forms and makes a pair of light-blocking member separation preliminary dimension that can cover the light of described the 2nd luminescence unit with respect to described image unit, and, can change the size of separation of this light-blocking member and adjust slit width arbitrarily.
The present invention the 4th aspect forms, in the foreign matter screening plant of the described tealeaves of either side in aspect the 1st～the 3rd, it is characterized in that, described the 1st luminescence unit irradiation blue light, and the blue light from the 1st luminescence unit exposes to tealeaves, obtains red fluorescence from this tealeaves thus, and, described identifying unit judges according to this red fluorescence that has the described image unit of having no way of to take whether by the shooting thing be foreign matter.
The present invention the 5th aspect forms, in the foreign matter screening plant of the described tealeaves of either side in aspect the 1st～the 4th, it is characterized in that, from the be reflected plate reflection and of the bias light of described the 2nd luminescence unit by described image unit shooting, and, can change the angle of this reflecting plate and adjust background levels of light arbitrarily.
According to the 1st aspect of the present invention, be provided with slit at the image pickup scope of image unit and at the 2nd luminescence unit with between by the shooting thing, so, bias light from the 2nd luminescence unit optically focused and arrive the situation of image unit on transparent foreign matter can be suppressed, the transparent foreign matter with optically focused effect of in tealeaves, sneaking into can be judged, screen and remove reliably.
According to the 2nd aspect of the present invention, image unit comprises that image pickup scope constitutes the line-scan camera of wire, is formed with slit along the image pickup scope of this wire, so, can make a video recording reliably and foreign matter is judged, and can not hinder the shooting of image unit.
According to the 3rd aspect of the present invention, slit forms and makes a pair of light-blocking member separation preliminary dimension that can cover the light of the 2nd luminescence unit with respect to image unit, and, can change the size of separation of this light-blocking member and adjust slit width arbitrarily, so, can be according to the accuracy of detection of image unit or the luminous power of the 1st luminescence unit and the 2nd luminescence unit etc., adjust the slit width of slit arbitrarily, can screen and remove the transparent foreign matter with optically focused effect of in tealeaves, sneaking into more reliably.
According to the 4th aspect of the present invention, the 1st luminescence unit irradiation blue light, and the blue light from the 1st luminescence unit exposes to tealeaves, obtain red fluorescence from this tealeaves thus, and identifying unit judges according to this red fluorescence that has the image unit of having no way of to take whether by the shooting thing be foreign matter, so, can carry out the differentiation of the foreign matter of in tealeaves, sneaking into more accurately.
According to the 5th aspect of the present invention, from the be reflected plate reflection and making a video recording of the bias light of the 2nd luminescence unit by image unit, and, can change the angle of this reflecting plate and adjust background levels of light arbitrarily, so, can adjust background levels of light arbitrarily according to the accuracy of detection of image unit or the luminous power of the 1st luminescence unit and the 2nd luminescence unit etc., can screen and remove the transparent foreign matter with optically focused effect of in tealeaves, sneaking into more reliably.
Description of drawings
Fig. 1 is the front view of foreign matter screening plant that the tealeaves of embodiments of the present invention is shown.
Fig. 2 is the schematic diagram that the internal structure of the foreign matter screening plant of observing this tealeaves from the side is shown.
Fig. 3 is the vertical view that the foreign matter screening plant of this tealeaves is shown.
Fig. 4 is the side view that is illustrated in the vertical hopper of using in the foreign matter screening plant of this tealeaves.
Fig. 5 is the block diagram that the annexation of line-scan camera (image unit), identifying unit and air nozzle in the foreign matter screening plant of this tealeaves is shown.
Fig. 6 is the key diagram of screening action that is used for illustrating the foreign matter screening plant of this tealeaves.
Fig. 7 is the front view that is illustrated in the service tank of using in the foreign matter screening plant of this tealeaves.
Fig. 8 is the side view that this service tank is shown.
Fig. 9 is the schematic diagram that the position relation of feed unit (input feed appliance) in the foreign matter screening plant of this tealeaves and longitudinal wall face is shown.
Figure 10 is the enlarged diagram that the position relation of the 1st luminescence unit, the 2nd luminescence unit and slit etc. in the foreign matter screening plant of this tealeaves is shown.
Figure 11 is the schematic diagram that the curtain-shaped cover member of the formation slit in the foreign matter screening plant of this tealeaves is shown.
(a) of Figure 12 is the curve map that the image pickup result (grade) of the image unit in the foreign matter screening plant of tealeaves of present embodiment is shown, and (b) is the curve map of image pickup result (grade) that the image unit under the situation that does not form slit is shown.
Label declaration
1: chute; 1a: the 1st chute; 1b: the 2nd chute; 2: detect detection unit; 3: line-scan camera (image unit); 4: air nozzle; 5a, 5b: accept parts; 6: vertical hopper (supply unit); 6a: the 1st transport path; 6b: the 2nd transport path; 7: loose tea feed appliance (supply unit); 7a: the 1st transport path; 7b: the 2nd transport path; 8: throw in feed appliance (feed unit); 8a: the 1st feed path; 8b: the 2nd feed path; 9: service tank; 10: identifying unit; 11: driving mechanism; 12: cylinder; 13: framework; 14: sheet of vinyl (longitudinal wall face); 15: the 1 luminescence units; 16: the 2 luminescence units; 17: reflecting plate; 18: angle change unit; 19a: light-blocking member; 19b: light-blocking member; 19c: slit; 20: storage member; 21: glass plate.
The specific embodiment
Below, specify embodiments of the present invention with reference to accompanying drawing.
Thereby the foreign matter screening plant of the tealeaves of present embodiment be used for making tealeaves at a plurality of chutes successively by screening and remove the foreign matter of in tealeaves, sneaking into, as depicted in figs. 1 and 2, this foreign matter screening plant mainly is made of the 1st chute 1a and the 2nd chute 1b, the line-scan camera 3 as image unit, air nozzle 4, identifying unit 10 (with reference to Fig. 5), the 1st luminescence unit the 15, the 2nd luminescence unit 16.In addition, the detection detection unit of the case shape of label 2 expression receipt of wire smear cameras 3 and air nozzle 4.And, in the present embodiment, near the foreign matter screening plant of tealeaves, be respectively arranged with vertical hopper 6, loose tea feed appliance 7, throw in feed appliance 8, can take in the service tank 9 of the tealeaves that will screen of scheduled volume.
The 1st chute 1a and the 2nd chute 1b predetermined oblique angle respectively set, and can make tealeaves lead to the bottom from top separately, are set up in parallel 2 with respect to the width (left and right directions of Fig. 1) that installs.As shown in Figure 6, be equipped with respectively in the bottom of these the 1st chute 1a and the 2nd chute 1b and accept parts 5a, 5b, the tealeaves by (promptly sliding through from the teeth outwards) in the 1st chute 1a and the 2nd chute 1b can drop to respectively accepts parts 5a, 5b.
Line-scan camera 3 (image unit) thus the tealeaves that falls from the 1st chute 1a and the 2nd chute 1b made a video recording obtain digital picture, image pickup scope is set near the width delegation the bottom of the 1st chute 1a or the 2nd chute 1b.That is, in the image that will obtain by line-scan camera 3 as the sensing scope of the wire of screening object (about extend linearity) as image pickup scope.
And line-scan camera 3 remains pixel data with captured image, so near the pixel of the wire of the width delegation the bottom of the 1st chute 1a and the 2nd chute 1b constitutes above-mentioned image pickup scope.In addition, suitably decision is at which height setting image pickup scope, preferably the equipping position by air nozzle the 4, the 1st luminescence unit 15 and the 2nd luminescence unit 16 and towards etc., be adjusted into and be suitable for the height that foreign matter is judged most.
The 1st luminescence unit 15 by from line-scan camera 3 (image unit) thus the side irradiates light obtain from by the shooting thing catoptrical parts (for example constitute by light emitting diode, in the present embodiment, the 1st luminescence unit 15 sets a pair of up and down) constitute, the 2nd luminescence unit 16 is made of the parts (for example fluorescent lamp) from the background side irradiates light that utilizes the image that line-scan camera 3 (image unit) takes.In the present embodiment, shown in Fig. 6,10, from be reflected plate 17 reflections and of the bias light of the 2nd luminescence unit 16 by line-scan camera 3 shootings, and, possesses the angle change unit 18 that the angle to reflecting plate 17 changes, utilize the angle of these angle change unit 18 these reflecting plates 17 of change, thus, can adjust background levels of light arbitrarily.In addition, among Figure 10, label 21 expression glass plates, reverberation and bias light are via these glass plate 21 receiving track smear cameras 3.
And then as shown in Figure 5, line-scan camera 3 is electrically connected with identifying unit 10.This identifying unit 10 for example is made of microcomputer, according to the shooting grade (catoptrical power) of the image that is obtained by line-scan camera 3 (being the pixel of image pickup scope), judges that by the shooting thing be tealeaves or foreign matter.That is, according in the image that obtains by line-scan camera 3 from the reverberation of the 1st luminescence unit 15 with from the bias light of the 2nd luminescence unit 16, judge whether by the shooting thing be foreign matter.More specifically, the catoptrical input rank (difference of bias light and catoptrical input rank) of the image that will be taken by line-scan camera 3 is as the longitudinal axis, when curve map is made as transverse axis in the position of the width of image pickup scope, shown in Figure 12 (a), the waveform that obtains being scheduled to, but, input rank in this waveform is lower than the position of predetermined threshold value as foreign matter.
Here, in the present embodiment, the 1st luminescence unit 15 is made of the blue LED (LED) of irradiation blue light (wavelength is the light about 460nm).Promptly, when the blue light from the 1st luminescence unit 15 exposes to tealeaves, the chlorophyll that contains in the tealeaves reacts, (wavelength is the light about 645～660nm: red fluorescence) to send red fluorescence, so, can utilize identifying unit 10 to judge whether by the shooting thing be foreign matter according to this red fluorescence that has the line-scan camera 3 of having no way of to take.
Especially, in the present embodiment, from the 2nd luminescence unit 16 irradiation red light (light that wavelength and red fluorescence are roughly the same), and, be equipped with the filter (not shown) that red light is seen through at line-scan camera 3 with between by the shooting thing.And, under the situation that tealeaves is made a video recording, becoming from the reduction of the input rank of background level does not have or minimum state fully, on the other hand, and under the situation that foreign matters such as metal (can't obtain the foreign matter of red fluorescence as chlorophyll etc. with the blue light reaction) are made a video recording, can't obtain red fluorescence, so, enlarge markedly from the reduction of the input rank of background level, surpass predetermined threshold value, so can be judged to be by the shooting thing is foreign matter.
On the other hand, identifying unit 10 also is electrically connected with air nozzle 4, constitutes according to judging based on the foreign matter of identifying unit 10 and controls air nozzle 4.Thus, being judged to be at identifying unit 10 is under the situation of foreign matter, drives air nozzle 4, blows away action and makes and fall the track difference, can screen thus.Promptly, not that foreign matter (promptly being judged to be by identifying unit 10, be tealeaves) situation under, do not drive air nozzle 4, as shown in Figure 6, keep the track that tealeaves falls from the 1st chute 1a or the 2nd chute 1b, on the other hand, being judged to be is under the situation of foreign matter, and air nozzle 4 drives, and makes it fall the track difference.
As mentioned above, air nozzle 4 blows away and is judged to be by identifying unit 10 is the part of foreign matter, make its with based on the 1st chute 1a or the 2nd chute 1b and the different track of track that falls that forms fall.This air nozzle 4 sets a plurality of in the bottom broad ways of the 1st chute 1a and the 2nd chute 1b side by side, utilizing identifying unit 10 to be judged to be under the situation of having sneaked into foreign matter in the tealeaves that is falling, air nozzle 4 is driven, can blow away this foreign matter towards reclaiming unit B 1.
Here, in the present embodiment, shown in Fig. 6,10, slit 19c is set at the image pickup scope of line-scan camera 3 (image unit) and at the 2nd luminescence unit 16 with between by the shooting thing.This slit 19c is made of the following gap that forms: this gap makes up and down a pair of light-blocking member 19a, the 19b that can cover the light of the 2nd luminescence unit 16 with respect to line-scan camera 3 (image unit) separate preliminary dimension, as shown in figure 11, tealeaves and foreign matter are made a video recording by line-scan camera 3 via slit 19c.
Especially, in the present embodiment, the 2nd luminescence unit 16, reflecting plate 17 and light-blocking member 19a, 19b fix and are accommodated in the storage member 20 that is fixed in the foreign matter screening plant.Light-blocking member 19a, 19b are formed with slotted hole (not shown) respectively, in this slotted hole, run through to insert screw (not shown) and fix by screwing togather, and by the insertion position of running through of change screw, thus the installation site that can change light-blocking member 19a, 19b.That is,, thus, the size of separation of these light-blocking members 19a, 19b can be changed, the slit width of slit 19c can be adjusted arbitrarily by changing the installation site of light-blocking member 19a, 19b.In addition, label 20a represents the window portion in the storage member 20, and the light of the 2nd luminescence unit 16 (bias light) is via this 20a of window portion receiving track smear camera 3.
According to above-mentioned embodiment, be provided with slit 19c at the image pickup scope of line-scan camera 3 (image unit) and at the 2nd luminescence unit 16 with between by the shooting thing, so, can suppress bias light from the 2nd luminescence unit 16 optically focused and the transparent foreign matter with optically focused effect of sneaking into can be judged, screens and be removed to the situation of receiving track smear camera 3 (image unit) reliably in tealeaves on transparent foreign matter.
Promptly, as present embodiment, form slit 19c, thus, shown in Figure 12 (a), can reduce input rank to Transparent color nylon wire (thin nylon wire and thick nylon wire) (transparent foreign matter) significantly when making a video recording with optically focused effect, compare as can be known with the curve map under the situation that as this Figure 12 (b), does not form slit,, can be judged to be foreign matter reliably at transparent foreign matter with optically focused effect.
And image unit comprises that image pickup scope constitutes the line-scan camera 3 of wire, is formed with slit 19c along the image pickup scope of this wire, so, can make a video recording reliably and foreign matter is judged, and can not hinder the shooting of line-scan camera 3.Replacing line-scan camera 3, also can be to have the more video camera of the image pickup scope of wide region (ccd video camera etc.).
And, slit 19c forms and makes a pair of light-blocking member 19a, the 19b that can cover the light of the 2nd luminescence unit 16 with respect to line-scan camera 3 separate preliminary dimension, and, can change the size of separation of this light-blocking member 19a, 19b and adjust slit width arbitrarily, so, can be according to the accuracy of detection of line-scan camera 3 (image unit) or the luminous power of the 1st luminescence unit 15 and the 2nd luminescence unit 16 etc., adjust the slit width of slit 19c arbitrarily, can screen and remove the transparent foreign matter with optically focused effect of in tealeaves, sneaking into more reliably.
And then, in the present embodiment, the 1st luminescence unit 15 irradiation blue lights, and the blue light from the 1st luminescence unit 15 exposes to tealeaves, obtains red fluorescence from this tealeaves thus, and, identifying unit 10 is according to this red fluorescence that has the line-scan camera 3 of having no way of to take, judge whether by the shooting thing be foreign matter, so, can carry out the differentiation of the foreign matter of in tealeaves, sneaking into more accurately.
And then, from be reflected plate 17 reflections and of the bias light of the 2nd luminescence unit 16 by line-scan camera 3 shootings, and, can change the angle of this reflecting plate 17 and adjust background levels of light arbitrarily, so, can adjust background levels of light arbitrarily according to the accuracy of detection of line-scan camera 3 (image unit) or the luminous power of the 1st luminescence unit 15 and the 2nd luminescence unit 16 etc., can screen and remove the transparent foreign matter with optically focused effect of in tealeaves, sneaking into more reliably.
In the present embodiment, near the foreign matter screening plant, be equipped with the supply unit that comprises vertical hopper 6 and loose tea feed appliance 7, comprise the feed unit of throwing in feed appliance 8 and the service tank 9 that can take in the tealeaves that will screen of scheduled volume.Below, describe applied these unit in detail.
Throwing in feed appliance 8 falls the consistent vibration feeder on the top that tealeaves drops to each chute (the 1st chute 1a and the 2nd chute 1b) that can make simultaneously of condition approximate equality and constitutes by making, so that supply with tealeaves to the 1st chute 1a and the 2nd chute 1b successively respectively, as shown in Figure 3, throw in feed appliance 8 and be formed with 2 tealeaves feed path 8a, the 8bs corresponding with each chute.That is, throw in feed appliance 8 and constitute by single vibration feeder, and, at throughput direction the conveyor surface (upper surface) of this vibration feeder is divided into 2, form 2 feed path 8a, 8b.
And as shown in Figure 9, the top of the division of the conveyor surface in throwing in feed appliance 8 (vibration feeder) part and edge portion is formed with the longitudinal wall face 14 that is made of predetermined separate parts such as sheet of vinyl.Particularly, as shown in the drawing, in the periphery sidepiece setting of throwing in feed appliance 8 cylinder 12 is set, and, suspension connects this cylinder 12 framework 13 each other, corresponding position, the top with division part of throwing in feed appliance 8 and edge portion from this framework 13 sheet of vinyl that hangs down forms longitudinal wall face 14 thus.
By this longitudinal wall face 14, the tealeaves flyer that can avoid reliably passing through in a feed path (8a or 8b) arrives other feed paths (8a or 8b) of adjacency or the situation outside the input feed appliance 8.In addition, the sheet of vinyl that preferably constitutes longitudinal wall face 14 has been added and has been prevented charged function, perhaps, also can utilize the parts (metal etc.) of other materials of electric conductivity to form the longitudinal wall face.
In addition, as shown in Figure 4, vertical hopper 6 has the mobile a plurality of incorporating section 6f that can circulate upward from the below, carries the tealeaves of being taken in by this incorporating section 6f successively upward.And, as shown in Figure 2, be formed with 2 outlet 6d, 6e on the top of vertical hopper 6, discharge the tealeaves that the incorporating section 6f by the 1st transport path 6a transports from outlet 6d, and, discharge the tealeaves that the incorporating section 6f by the 2nd transport path 6b transports from another outlet 6e.
Loose tea feed appliance 7 is made of vibratory conveyer, divide the conveyor surface of this loose tea feed appliance 7 accordingly with the feed path 8a, the 8b that throw in feed appliance 8, as shown in Figure 3, this loose tea feed appliance 7 has the 1st transport path 7a that will be transported to the 1st feed path 8a that throws in feed appliance 8 from the tealeaves that outlet 6d discharges and the 2nd transport path 7b that will be transported to the 2nd feed path 8b of input feed appliance 8 from the tealeaves that outlet 6e discharges.Promptly, the tealeaves of discharging from outlet 6d, 6e passes through loose tea feed appliance 7, carry by the 1st transport path 7a, the 2nd transport path 7b respectively, fall, arrive the 1st feed path 8a, the 2nd feed path 8b that throws in feed appliance 8 respectively from terminal 7aa, the 7ba of these transport paths.
As shown in the drawing, terminal 7aa, the 7ba of the transport path in the loose tea feed appliance 7 forms with respect to the throughput direction predetermined oblique angle of throwing in feed appliance 8, thus, constitute tealeaves with respect to the width approximate equality of the 1st feed path 8a and the 2nd feed path 8b fall.Like this, the tealeaves that falls to the 1st feed path 8a drops to the top of the 1st chute 1a, and passes through on the 1st chute 1a, and the tealeaves that falls to the 2nd feed path 8b drops to the top of the 2nd chute 1b, and passes through on the 2nd chute 1b.
The length direction that screw rod 9b constitutes at incorporating section 9a extends setting, and the one end is positioned at supply port 9c and can rotates, and by the spinning movement of this screw rod 9b, the tealeaves in the 9a of incorporating section is transported to supply port 9c successively, from supplying to vertical hopper 6 here.And incorporating section 9a with respect to framework F vibration, utilizes this vibration that the tealeaves of inside is transported to supply port 9c by driving mechanism 11 and leaf spring S.
So, screw rod 9b rotation is driven, thus, supply with tealeaves to vertical hopper 6 successively, and, tealeaves in the 9a of incorporating section reduces and is difficult to by after the screw rod 9b conveying, driving mechanism 11 is driven,, make this incorporating section 9a vibration by the effect of this driving force and leaf spring S, thus, can supply with remaining tealeaves to vertical hopper 6.Thus, can supply with the tealeaves of in the 9a of incorporating section, taking in to vertical hopper 6 with not remaining.
Then, the foreign matter screening plant of above-mentioned tealeaves and the effect of ancillary equipment are described.
Throw in tealeaves in the 9a of the incorporating section of service tank 9, when screw rod 9b rotation was driven, the tealeaves in the 9a of this incorporating section arrived supply port 9c successively, from the 1st transport path 6a that supplies to vertical hopper 6 here to carry upward.This tealeaves that transports is discharged from outlet 6d, arrives the 1st transport path 7a of loose tea feed appliance 7.
The tealeaves that arrives the 1st transport path 7a is transferred successively by the vibration effect of loose tea feed appliance 7, fall from terminal 7aa, after arriving the 1st feed path 8a that throws in feed appliance 8, be transferred successively by the vibration effect of this input feed appliance 8, fall from its end, supply to the top of the 1st chute 1a.So, tealeaves passes through on the 1st chute 1a, the process that the bottom from the 1st chute 1a falls, carry out based on line-scan camera 3 shooting, based on the judgement of identifying unit 10 and based on the screening of air nozzle 4, utilize air nozzle 4 that foreign matter is blown away and reclaim unit B 1, simultaneously, do not have only because of air nozzle 4 changes the tealeaves that falls track and arrive and accept parts 5a.More than, the 1st time the screening end of job.
Then, the tealeaves that parts 5a is accepted in arrival is carried once more upward by the 2nd transport path 6b that guide portion 6c is directed to vertical hopper 6.This tealeaves that transports is discharged from outlet 6e, arrives the 2nd transport path 7b of loose tea feed appliance 7.The tealeaves that arrives the 2nd transport path 7b is transferred successively by the vibration effect of loose tea feed appliance 7, fall from terminal 7ba, after arriving the 2nd feed path 8b that throws in feed appliance 8, be transferred successively by the vibration effect of this input feed appliance 8, fall from the end of throwing in feed appliance 8, supply to the top of the 2nd chute 1b.
So, tealeaves passes through on the 2nd chute 1b, the process that the bottom from the 2nd chute 1b falls, carry out based on line-scan camera 3 shooting, based on the judgement of identifying unit 10 and based on the screening of air nozzle 4, do not have only because of air nozzle 4 changes the tealeaves that falls track to arrive and accept parts 5b.In addition, arrive the tealeaves of accepting parts 5b and directly fall, be accommodated in and reclaim in the unit B 2.More than, the 2nd time the screening end of job.
Like this, tealeaves is circulated and in 2 chutes (the 1st chute 1a and the 2nd chute 1b), thus, can carry out 2 screenings and remove foreign matter in the tealeaves successively by 2 chutes, so, can carry out the screening of the foreign matter of in tealeaves, sneaking into more reliably.In addition, in the present embodiment, be set up in parallel 2 chutes, still, also can constitute and be set up in parallel the chute more than 3 and carry out the screening of the tealeaves more than 3 times.
Foreign matter screening plant according to above-mentioned tealeaves, width with respect to device is set up in parallel a plurality of (2) chute, and, possess to make and fall condition approximate equality unanimity and can make tealeaves drop to the input feed appliance 8 on the top of each chute, so that go up to these a plurality of chutes (the 1st chute 1a and the 2nd chute 1b) successively and supply with tealeaves, so, can suppress the height of devices size less, and, can improve the screening precision.That is, make tealeaves drop to the 1st chute 1a and the 2nd chute 1b that is set up in parallel respectively, so it falls condition approximate equality unanimity from same input feed appliance 8.
In throwing in feed appliance 8, be formed with a plurality of tealeaves feed paths (1st feed path 8a and 2nd feed path 8b) corresponding with each chute (the 1st chute 1a and the 2nd chute 1b), so, can make the condition that the falls approximate equality unanimity in each chute more reliably.And, input feed appliance 8 as feed unit is made of single vibration feeder, and, be divided into the conveyor surface of this vibration feeder a plurality of, form a plurality of feed paths (the 1st feed path 8a and the 2nd feed path 8b), so, can feed unit that makes tealeaves drop to a plurality of chutes of dual-purpose, the reduction of simplification, manufacturing cost and operating cost that can the implement device structure, the facilitation of maintenance.
In the present embodiment, vertical hopper 6 and loose tea feed appliance 7 as supply unit also are made of single vibration feeder respectively, its conveyor surface and delivery site are divided into a plurality of (2), form a plurality of transport paths, so, can make a supply unit have 2 transport paths concurrently, feed appliance 8 is same with throwing in, simplification that can the implement device structure, manufacturing cost and by the reduction of cost, the facilitation of maintenance.
And then, correspond respectively to a plurality of tealeaves feed paths (the 1st feed path 8a and the 2nd feed path 8b) of throwing in the feed appliance 8, possess and be formed with the supply unit (vertical hopper 6 and loose tea feed appliance 7) that is used for carrying a plurality of transport paths (the 1st transport path 7a in the 1st transport path 6a of vertical hopper 6, the 2nd transport path 6b and the loose tea feed appliance 7, the 2nd transport path 7b) of tealeaves to each feed path, so, can be more prone to and carry out reliably when repeatedly screening carrying at the tealeaves of throwing in feed appliance 8.
Present embodiment more than has been described, still, has the invention is not restricted to this, for example, the light of the color beyond also can be from the 1st luminescence unit irradiation blue detects its reverberation and difference based on the bias light of the 2nd luminescence unit, utilizes identifying unit to judge whether by the shooting thing be foreign matter.That is, in the present embodiment, produce the characteristic of the tealeaves of red fluorescence when utilizing the irradiation blue light, but, even do not utilize this characteristic, as long as, then can be any-mode according to judging foreign matter from the reverberation of the 1st luminescence unit with based on the bias light of the 2nd luminescence unit.
In addition, in the present embodiment, carry out repeatedly the foreign matter screening of (2 times), still, also can only carry out once or carry out the foreign matter screening more than 3 times.And, in the present embodiment, utilize air nozzle to blow away to be judged to be the part of foreign matter, but, the part (being tealeaves) that also can utilize air nozzle to blow away not to be judged as foreign matter, make it to fall, thus, can screen tealeaves and foreign matter with the different track of track that falls that forms based on chute.
And then, in the present embodiment,, throw in feed appliance 8 and loose tea feed appliance 7 and constitute by vibration feeder about the supply unit of in the foreign matter screening plant, using, still, replace, also can be other supply units (band conveyors etc.).Equally, replacing the vertical hopper 6 of present embodiment, also can be other the general supply units that can carry tealeaves upward.And then, in the present embodiment, feed unit is the single input feed appliance 8 with the 1st feed path 8a and the 2nd feed path 8b, still, also can be respectively independent feed unit (have the vibration feeder of the 1st feed path and have the vibration feeder etc. of the 2nd feed path).
[utilizability on the industry]
So long as at the image pickup scope of shooting unit and at the 2nd luminescence unit be provided with the foreign matter screening device of the tealeaves of slit between the thing by shooting, even the device that then the outward appearance shape is different or added the device etc. of other functions also can be used.
Claims (5)
1. the foreign matter screening plant of a tealeaves, the foreign matter screening plant of this tealeaves has:
Chute, its predetermined oblique angle sets, and can make tealeaves lead to the bottom from top;
Image unit, its tealeaves that bottom from described chute is fallen is made a video recording to obtain image;
The 1st luminescence unit, it is from this image unit side irradiates light, to obtain the reverberation from the thing of being made a video recording;
The 2nd luminescence unit, it is from the background side irradiates light of the image that utilizes described image unit and take;
Identifying unit, its according in the image that obtains by described image unit, from the reverberation of described the 1st luminescence unit with from the bias light of described the 2nd luminescence unit, judge whether by the shooting thing be foreign matter; And
Air nozzle, it blows away to be judged to be by this identifying unit and is the part of foreign matter or blows away and be judged to be the part that is not foreign matter, and thus, make this part falling, thereby can screen with the different track of track that falls that forms based on described chute,
The foreign matter screening plant of this tealeaves is used for making tealeaves to pass through at described chute, thus the foreign matter that screening and removal are sneaked in tealeaves,
The foreign matter screening plant of this tealeaves is characterised in that,
Be provided with slit at the image pickup scope of described image unit and at described the 2nd luminescence unit with between by the shooting thing.
2. the foreign matter screening plant of tealeaves according to claim 1 is characterized in that,
Described image unit comprises that image pickup scope constitutes the line-scan camera of wire, is formed with described slit along the image pickup scope of this wire.
3. the foreign matter screening plant of tealeaves according to claim 1 and 2 is characterized in that,
Described slit forms and makes a pair of light-blocking member that can cover the light of described the 2nd luminescence unit with respect to described image unit separate preliminary dimension, and, can change the size of separation of this light-blocking member and adjust slit width arbitrarily.
4. according to the foreign matter screening plant of each the described tealeaves in the claim 1～3, it is characterized in that,
Described the 1st luminescence unit irradiation blue light, and the blue light from the 1st luminescence unit exposes to tealeaves, obtains red fluorescence from this tealeaves thus, and, described identifying unit judges according to this red fluorescence that has the described image unit of having no way of to take whether by the shooting thing be foreign matter.
5. according to the foreign matter screening plant of each the described tealeaves in the claim 1～4, it is characterized in that,
From the be reflected plate reflection and of the bias light of described the 2nd luminescence unit by described image unit shooting, and, can change the angle of this reflecting plate and adjust background levels of light arbitrarily.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009252833A JP5630986B2 (en) | 2009-11-04 | 2009-11-04 | Foreign matter sorting device for tea leaves |
| JP2009-252833 | 2009-11-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102049391A true CN102049391A (en) | 2011-05-11 |
| CN102049391B CN102049391B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010530737.6A Active CN102049391B (en) | 2009-11-04 | 2010-11-02 | Screening device for foreign bodies in tea |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5630986B2 (en) |
| CN (1) | CN102049391B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102284433A (en) * | 2011-08-08 | 2011-12-21 | 合肥泰禾光电科技有限公司 | Sorting method and sorting machine for tea leaves |
| CN103203324A (en) * | 2012-01-11 | 2013-07-17 | 罗伯特·博世有限公司 | Device equipped with monitoring system used for conveying cap |
| CN103561876A (en) * | 2012-01-19 | 2014-02-05 | (株)艾迪尔自动化 | Three-stage color selection system |
| CN104174598A (en) * | 2014-09-01 | 2014-12-03 | 安徽唯嵩光电科技有限公司 | Sorting machine for sorting hard materials and sorting method thereof |
| CN113680692A (en) * | 2021-07-28 | 2021-11-23 | 三江侗族自治县仙池茶业有限公司 | Method and device for intelligently screening green tea |
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| CN103658059A (en) * | 2013-11-29 | 2014-03-26 | 安徽捷迅光电技术有限公司 | Discharge chute of color sorter |
| JP2017142118A (en) * | 2016-02-09 | 2017-08-17 | 株式会社イシダ | Optical inspection device |
| JP7018848B2 (en) * | 2018-08-08 | 2022-02-14 | 株式会社クボタ | Granular inspection device and granular inspection method |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2011098255A (en) | 2011-05-19 |
| JP5630986B2 (en) | 2014-11-26 |
| CN102049391B (en) | 2015-04-22 |
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