CN102049391B - Screening device for foreign bodies in tea - Google Patents
Screening device for foreign bodies in tea Download PDFInfo
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- CN102049391B CN102049391B CN201010530737.6A CN201010530737A CN102049391B CN 102049391 B CN102049391 B CN 102049391B CN 201010530737 A CN201010530737 A CN 201010530737A CN 102049391 B CN102049391 B CN 102049391B
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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
The present invention relates to for by make tealeaves in chute successively by thus screen and remove the foreign matter screening plant of the tealeaves of the foreign matter be mixed in tealeaves.
Background technology
In the past, propose the foreign matter screening plant of following tealeaves: blue light is irradiated to tealeaves, utilize the image units such as line-scan camera (1ine scan camera) to make a video recording to the image obtained by its reverberation simultaneously, the foreign matter (such as with reference to patent document 1) be mixed in tealeaves can be screened.The foreign matter screening plant of this tealeaves is configured to be had: the image units such as line-scan camera; The 1st luminescence unit of blue light can be irradiated to tealeaves; And the 2nd luminescence unit irradiated as the bias light of the background of the image utilizing image unit to obtain.
And then also possess the identifying unit of grade (level) difference that can judge reverberation and the bias light being caught on camera thing, whether the thing that is caught on camera captured by judgement is foreign matter.Like this, in the foreign matter screening plant of above-mentioned existing tealeaves, the chlorophyll utilize when irradiating blue light to tealeaves, containing in this blue light and tealeaves reacts and produces the character of red fluorescence, tealeaves is judged to be when being photographed this red fluorescence by image unit, on the other hand, foreign matter is judged to be when not this red fluorescence, so, this can be utilized to select to screen tealeaves and foreign matter.
[patent document 1] Japanese Unexamined Patent Publication 2005-66434 publication
But in the foreign matter screening plant of above-mentioned existing tealeaves, there are the following problems.
Such as, when being mixed into the transparent foreign matter be made up of transparent resin etc. in tealeaves, when utilizing image unit to make a video recording to this transparent foreign matter, from the 2nd luminescence unit bias light through, exist and be difficult to differentiate to be whether the unfavorable condition of foreign matter.Especially, in the transparent foreign matter with optically focused effect (optically focused based on lens effect), optically focused is carried out to the light from background, so, when utilizing image unit to make a video recording, reduce from the grade difference being caught on camera the reverberation of thing and bias light, exist and be more difficult to differentiate to be whether the unfavorable condition of foreign matter.
Summary of the invention
The present invention completes in light of this situation, provides the foreign matter screening plant of following tealeaves: reliably can screen and remove the transparent foreign matter with optically focused effect be mixed 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 arranges, and tealeaves can be made to lead to bottom from top; Image unit, it makes a video recording to obtain image to the tealeaves that the bottom from described chute falls; 1st luminescence unit, it irradiates light from this image unit side, to obtain the reverberation from being caught on camera thing; 2nd luminescence unit, its background side from the image utilizing described image unit to take irradiates light; Identifying unit, its according in the image that obtained by described image unit, from the reverberation of described 1st luminescence unit and the bias light from described 2nd luminescence unit, judge whether be caught on camera thing is foreign matter; And air nozzle, it blows away to be judged to be it is that the part or blow away of foreign matter is judged to be it is not the part of foreign matter by this identifying unit, thus, make this part to fall from the track falling track different formed based on described chute, thus can screen, the foreign matter screening plant of this tealeaves is used for tealeaves is passed through in described chute, thus screen and remove the foreign matter be mixed in tealeaves, it is characterized in that, described image unit image pickup scope and at described 2nd luminescence unit be caught on camera between thing and be provided with slit.
The present invention the 2nd aspect is formed as, and in the foreign matter screening plant of the tealeaves described in the 1st, it is characterized in that, described image unit comprises the line-scan camera that image pickup scope is configured to wire, and the image pickup scope along this wire is formed with described slit.
The present invention the 3rd aspect is formed as, in the foreign matter screening plant of the tealeaves described in the 1st or the 2nd, it is characterized in that, a pair light-blocking member that described slit is formed as enabling to cover relative to described image unit the light of described 2nd luminescence unit is separated preliminary dimension, further, the size of separation of this light-blocking member can be changed and adjust slit width arbitrarily.
The present invention the 4th aspect is formed as, in the foreign matter screening plant of the tealeaves described in the either side in the 1st ~ 3rd, it is characterized in that, described 1st luminescence unit irradiates blue light, and expose to tealeaves from the blue light of the 1st luminescence unit, obtain red fluorescence from this tealeaves thus, and, described identifying unit, according to this red fluorescence having described image unit shooting of having no way of, judges whether be caught on camera thing is foreign matter.
The present invention the 5th aspect is formed as, in the foreign matter screening plant of the tealeaves described in the either side in the 1st ~ 4th, it is characterized in that, bias light from described 2nd luminescence unit is made a video recording by described image unit by baffle reflection, further, the angle of this reflecting plate can be changed and adjust background levels of light arbitrarily.
According to the 1st aspect of the present invention, image unit image pickup scope and at the 2nd luminescence unit be caught on camera between thing and be provided with slit, so, the optically focused and arrive the situation of image unit on transparent foreign matter of the bias light from the 2nd luminescence unit can be suppressed, reliably can judge, screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves.
According to the 2nd aspect of the present invention, image unit comprises the line-scan camera that image pickup scope is configured to wire, and the image pickup scope along this wire is formed with slit, so, shooting reliably and foreign matter judgement can be carried out, and the shooting of image unit can not be hindered.
According to the 3rd aspect of the present invention, a pair light-blocking member that slit is formed as enabling to cover relative to image unit the light of the 2nd luminescence unit is separated preliminary dimension, and, the size of separation of this light-blocking member can be changed and adjust arbitrarily slit width, so, can according to the luminous power etc. of the accuracy of detection of image unit or the 1st luminescence unit and the 2nd luminescence unit, the slit width of any adjustment slit, more reliably can screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves.
According to the 4th aspect of the present invention, 1st luminescence unit irradiates blue light, and expose to tealeaves from the blue light of the 1st luminescence unit, red fluorescence is obtained thus from this tealeaves, further, identifying unit, according to this red fluorescence having image unit shooting of having no way of, judges whether be caught on camera thing is foreign matter, so, more precisely can carry out the differentiation of the foreign matter be mixed in tealeaves.
According to the 5th aspect of the present invention, bias light from the 2nd luminescence unit is made a video recording by image unit by baffle reflection, and, the angle of this reflecting plate can be changed and adjust arbitrarily background levels of light, so, according to the luminous power etc. of the accuracy of detection of image unit or the 1st luminescence unit and the 2nd luminescence unit, background levels of light can be adjusted arbitrarily, more reliably can screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves.
Accompanying drawing explanation
Fig. 1 is the front view of the foreign matter screening plant of the tealeaves that embodiments of the present invention are shown.
Fig. 2 is the schematic diagram of the internal structure that the foreign matter screening plant observing this tealeaves is from the side shown.
Fig. 3 is the top view of the foreign matter screening plant that this tealeaves is shown.
Fig. 4 is the side view that the vertical hopper applied in the foreign matter screening plant of this tealeaves is shown.
Fig. 5 is the block diagram of the annexation of line-scan camera (image unit), identifying unit and the air nozzle illustrated in the foreign matter screening plant of this tealeaves.
Fig. 6 is the key diagram for illustrating the screening action in the foreign matter screening plant of this tealeaves.
Fig. 7 is the front view that the service tank applied in the foreign matter screening plant of this tealeaves is shown.
Fig. 8 is the side view that this service tank is shown.
Fig. 9 is the schematic diagram of the position relationship that feed unit (input feed appliance) in the foreign matter screening plant of this tealeaves and longitudinal wall face are shown.
Figure 10 is the enlarged diagram of position relationship of the 1st luminescence unit illustrated in the foreign matter screening plant of this tealeaves, the 2nd luminescence unit and slit etc.
Figure 11 is the schematic diagram of the curtain-shaped cover member of the formation slit illustrated in the foreign matter screening plant of this tealeaves.
(a) of Figure 12 is the curve map of the image pickup result (grade) of image unit in the foreign matter screening plant of the tealeaves that present embodiment is shown, and (b) is the curve map of the image pickup result (grade) of the image unit illustrated when not forming slit.
Label declaration
1: chute; 1a: the 1 chute; 1b: the 2 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 1 transport path; 6b: the 2 transport path; 7: loose tea feed appliance (supply unit); 7a: the 1 transport path; 7b: the 2 transport path; 8: throw in feed appliance (feed unit); 8a: the 1 feed path; 8b: the 2 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 changing unit; 19a: light-blocking member; 19b: light-blocking member; 19c: slit; 20: storage member; 21: glass plate.
Detailed description of the invention
Below, embodiments of the present invention are illustrated with reference to accompanying drawing.
The foreign matter screening plant of the tealeaves of present embodiment passes through successively for making tealeaves thus screens and remove the foreign matter be mixed in tealeaves in multiple chute, as depicted in figs. 1 and 2, this foreign matter screening plant is formed primarily 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 15, the 2nd luminescence unit 16.In addition, label 2 represents the detection detection unit of the box like of receipt of wire smear camera 3 and air nozzle 4.Further, 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, the service tank 9 of the tealeaves that will screen of scheduled volume can be received.
1st chute 1a and the 2nd chute 1b respectively predetermined oblique angle arranges, and tealeaves can be made to lead to bottom from respective top, is set up in parallel 2 relative to the width (left and right directions of Fig. 1) of device.As shown in Figure 6, be equipped respectively in the bottom of these the 1st chute 1a and the 2nd chute 1b and accept parts 5a, 5b, can be dropped to respectively by the tealeaves of (namely sliding through from the teeth outwards) in the 1st chute 1a and the 2nd chute 1b and accept parts 5a, 5b.
Line-scan camera 3 (image unit) is made a video recording to the tealeaves fallen from the 1st chute 1a and the 2nd chute 1b thus obtains digital picture, image pickup scope is set in width a line of the adjacent bottom portions of the 1st chute 1a or the 2nd chute 1b.That is, using the sensing scope of the wire (linearity that left and right extends) as screening object in the image that obtained by line-scan camera 3 as image pickup scope.
Further, captured image is remained pixel data by line-scan camera 3, so the pixel of the wire of width a line of the adjacent bottom portions of the 1st chute 1a and the 2nd chute 1b forms above-mentioned image pickup scope.In addition, suitably determine which highly sets image pickup scope at, preferably by air nozzle 4, the 1st luminescence unit 15 and the 2nd luminescence unit 16 equipping position and towards etc., be adjusted to the height being most suitable for foreign matter and judging.
1st luminescence unit 15 (is such as made up of light emitting diode by irradiating light thus the parts obtained from the reverberation being caught on camera thing from line-scan camera 3 (image unit) side, in the present embodiment, 1st luminescence unit about 15 arranges a pair) form, the parts (such as fluorescent lamp) that the 2nd luminescence unit 16 irradiates light by the background side from the image utilizing line-scan camera 3 (image unit) to take are formed.In the present embodiment, as shown in Fig. 6,10, bias light from the 2nd luminescence unit 16 is reflected by reflecting plate 17 and is made a video recording by line-scan camera 3, and, possesses the angle changing unit 18 that the angle of reflecting plate 17 is changed, this angle changing unit 18 is utilized to change the angle of this reflecting plate 17, thereby, it is possible to adjust background levels of light arbitrarily.In addition, Tu10Zhong, label 21 represents glass plate, and reverberation and bias light arrive line-scan camera 3 via this glass plate 21.
And then as shown in Figure 5, line-scan camera 3 is electrically connected with identifying unit 10.This identifying unit 10 is such as made up of microcomputer, according to the shooting grade (power of reverberation) of the image obtained by line-scan camera 3 (i.e. the pixel of image pickup scope), judges that being caught on camera thing is tealeaves or foreign matter.That is, according to the reverberation from the 1st luminescence unit 15 in the image obtained by line-scan camera 3 and the bias light from the 2nd luminescence unit 16, judge whether be caught on camera thing is foreign matter.More specifically, using the input rank (difference of the input rank of bias light and reverberation) of the reverberation of the image taken by line-scan camera 3 as the longitudinal axis, curve map is made as transverse axis in the position of the width of image pickup scope time, as shown in (a) of Figure 12, obtain predetermined waveform, but, using input rank in this waveform lower than the position of predetermined threshold value as foreign matter.
Here, in the present embodiment, the 1st luminescence unit 15 is made up of the blue LED (LED) irradiating blue light (wavelength is the light of about 460nm).Namely, when the blue light from the 1st luminescence unit 15 exposes to tealeaves, the chlorophyll contained in tealeaves reacts, send red fluorescence (wavelength is the light of about 645 ~ 660nm: red fluorescence), so, can according to this red fluorescence having line-scan camera 3 of having no way of to take, whether utilizing identifying unit 10 to judge, being caught on camera thing is foreign matter.
Especially, in the present embodiment, irradiate red light (light that wavelength is roughly the same with red fluorescence) from the 2nd luminescence unit 16, and, line-scan camera 3 and being caught on camera to be equipped between thing only make red light through filter (not shown).And, when making a video recording to tealeaves, the reduction becoming the input rank from background level does not have or minimum state completely, on the other hand, when making a video recording to the foreign matters such as metal (cannot react with blue light as chlorophyll etc. and obtain the foreign matter of red fluorescence), red fluorescence cannot be obtained, so the reduction of the input rank from background level enlarges markedly, exceed predetermined threshold value, so, can be judged to be that being caught on camera thing is foreign matter.
On the other hand, identifying unit 10 is also electrically connected with air nozzle 4, is configured to judge to control air nozzle 4 according to the foreign matter based on identifying unit 10.Thus, when identifying unit 10 is judged to be foreign matter, drives air nozzle 4, carry out blowing away action and making to fall track difference, can screen thus.Namely, be judged to be by identifying unit 10 be not foreign matter (namely, tealeaves) when, do not drive air nozzle 4, as shown in Figure 6, maintain the track that tealeaves falls from the 1st chute 1a or the 2nd chute 1b, on the other hand, when being judged to be foreign matter, air nozzle 4 drives, and makes it fall track difference.
As mentioned above, air nozzle 4 blows away to be judged to be it is the part of foreign matter by identifying unit 10, makes it to fall from the track falling track different formed based on the 1st chute 1a or the 2nd chute 1b.This air nozzle 4 arranges multiple in the bottom of the 1st chute 1a and the 2nd chute 1b in the width direction side by side, when being judged to when utilizing identifying unit 10 to be mixed into foreign matter in the tealeaves fallen, air nozzle 4 is driven, this foreign matter can be blown away towards recovery unit B1.
Here, in the present embodiment, as shown in Fig. 6,10, line-scan camera 3 (image unit) image pickup scope and at the 2nd luminescence unit 16 be caught on camera between thing and arrange slit 19c.This slit 19c is made up of the gap formed as follows: this gap makes a pair light-blocking member 19a, the 19b up and down that can cover the light of the 2nd luminescence unit 16 relative to line-scan camera 3 (image unit) be separated 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 and be fixed in the storage member 20 of foreign matter screening plant.Light-blocking member 19a, 19b are formed with elongated hole (not shown) respectively, run through in this elongated hole and insert screw (not shown) and be fixed by screwing togather, run through insertion position by what change screw, thus the installation site of light-blocking member 19a, 19b can be changed.That is, by changing the installation site of light-blocking member 19a, 19b, thereby, it is possible to change the size of separation of these light-blocking members 19a, 19b, the slit width of slit 19c can be adjusted arbitrarily.In addition, label 20a represents the window portion in storage member 20, and the light (bias light) of the 2nd luminescence unit 16 arrives line-scan camera 3 via this window portion 20a.
According to above-mentioned embodiment, line-scan camera 3 (image unit) image pickup scope and at the 2nd luminescence unit 16 be caught on camera between thing and be provided with slit 19c, so, the optically focused and arrive the situation of line-scan camera 3 (image unit) on transparent foreign matter of the bias light from the 2nd luminescence unit 16 can be suppressed, reliably can judge, screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves.
Namely, form slit 19c as in the present embodiment, thus, as shown in (a) of Figure 12, input rank can be reduced significantly when making a video recording to Transparent color nylon wire (thin nylon wire and thick nylon wire) (there is the transparent foreign matter of optically focused effect), known compared with curve map when not forming slit with (b) as this Figure 12, for the transparent foreign matter with optically focused effect, reliably foreign matter can be judged to be.
Further, image unit comprises the line-scan camera 3 that image pickup scope is configured to wire, and the image pickup scope along this wire is formed with slit 19c, so, shooting reliably and foreign matter judgement can be carried out, and the shooting of line-scan camera 3 can not be hindered.Replacing line-scan camera 3, also can be the video camera (ccd video camera etc.) of the image pickup scope with more wide region.
And, a pair light-blocking member 19a, 19b that slit 19c is formed as making can cover relative to line-scan camera 3 light of the 2nd luminescence unit 16 are separated preliminary dimension, and, the size of separation of this light-blocking member 19a, 19b can be changed and adjust arbitrarily slit width, so, can according to the luminous power etc. of the accuracy of detection of line-scan camera 3 (image unit) or the 1st luminescence unit 15 and the 2nd luminescence unit 16, the slit width of any adjustment slit 19c, more reliably can screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves.
And then, in the present embodiment, 1st luminescence unit 15 irradiates blue light, and expose to tealeaves from the blue light of the 1st luminescence unit 15, obtain red fluorescence from this tealeaves thus, and, identifying unit 10 is according to this red fluorescence having line-scan camera 3 of having no way of to take, judge whether be caught on camera thing is foreign matter, so, more precisely can carry out the differentiation of the foreign matter be mixed in tealeaves.
And then, bias light from the 2nd luminescence unit 16 is reflected by reflecting plate 17 and is made a video recording by line-scan camera 3, and, the angle of this reflecting plate 17 can be changed and adjust arbitrarily background levels of light, so, according to the luminous power etc. of the accuracy of detection of line-scan camera 3 (image unit) or the 1st luminescence unit 15 and the 2nd luminescence unit 16, background levels of light can be adjusted arbitrarily, more reliably can screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves.
In the present embodiment, near foreign matter screening plant, be equipped with the supply unit comprising vertical hopper 6 and loose tea feed appliance 7, the service tank 9 comprising the feed unit throwing in feed appliance 8 and the tealeaves that will screen that scheduled volume can be received.Below, these unit applied are described in detail.
Throw in feed appliance 8 to form by making to fall the consistent vibration feeder that tealeaves can be made to drop to the top of each chute (the 1st chute 1a and the 2nd chute 1b) of condition approximate equality simultaneously, to supply 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 to be made up of single vibration feeder, and, for throughput direction, the conveyor surface (upper surface) of this vibration feeder is divided into 2, forms 2 feed paths 8a, 8b.
Further, as shown in Figure 9, on the division part of conveyor surface of throwing in feed appliance 8 (vibration feeder) and the top of edge, the longitudinal wall face 14 be made up of predetermined separate parts such as sheet of vinyl is formed with.Specifically, as shown in the drawing, erect at the periphery sidepiece throwing in feed appliance 8 and cylinder 12 is set, and, suspension connects this cylinder 12 framework 13 each other, hang down from the position corresponding with the top of the division part and edge of throwing in feed appliance 8 this framework 13 sheet of vinyl, forms longitudinal wall face 14 thus.
By this longitudinal wall face 14, the tealeaves flyer passed through in a feed path (8a or 8b) reliably can be avoided and the situation that arrives adjacent other feed paths (8a or 8b) or throw in outside feed appliance 8.In addition, the sheet of vinyl preferably forming longitudinal wall face 14 addition of and prevents from being with Electricity Functional, or, the parts (metal etc.) of other materials of electric conductivity also can be utilized to form longitudinal wall face.
Vertical hopper 6 can carry the tealeaves carried by service tank 9 and the tealeaves guided by guide portion 6c above device, is formed with these 2 transport paths of the 1st transport path 6a and the 2nd transport path 6b relative to throughput direction.That is, carry by the 1st transport path 6a the tealeaves transported from service tank 9 upward, on the other hand, carried upward by guide portion 6c from the tealeaves accepting parts 5a guiding by the 2nd transport path 6b.
In addition, as shown in Figure 4, vertical hopper 6 has can multiple incorporating section 6f of loopy moving upward from below, carry the tealeaves received by this incorporating section 6f successively upward.And, as shown in Figure 2, be formed with 2 outlets 6d, 6e on the top of vertical hopper 6, discharge the tealeaves transported by the incorporating section 6f of the 1st transport path 6a from an outlet 6d, further, the tealeaves transported by the incorporating section 6f of the 2nd transport path 6b is discharged from another outlet 6e.
Loose tea feed appliance 7 is made up of vibratory conveyer, the conveyor surface of this loose tea feed appliance 7 is divided accordingly with feed path 8a, 8b of throwing in feed appliance 8, as shown in Figure 3, this loose tea feed appliance 7 has the 1st transport path 7a tea leaf conveying of discharging from outlet 6d being delivered to the 1st feed path 8a throwing in feed appliance 8 and the 2nd transport path 7b tea leaf conveying of discharging from outlet 6e being delivered to the 2nd feed path 8b throwing in feed appliance 8.Namely, the tealeaves of discharging from outlet 6d, 6e passes through loose tea feed appliance 7, carried by the 1st transport path 7a, the 2nd transport path 7b respectively, fall from end 7aa, 7ba of these transport paths, arrive the 1st feed path 8a, the 2nd feed path 8b that throw in feed appliance 8 respectively.
As shown in the drawing, end 7aa, the 7ba of transport path in loose tea feed appliance 7 are formed relative to the throughput direction predetermined oblique angle of throwing in feed appliance 8, thus, be configured to tealeaves fall substantially uniformly relative to the width of the 1st feed path 8a and the 2nd feed path 8b.Like this, the tealeaves falling 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 falling to the 2nd feed path 8b drops to the top of the 2nd chute 1b, and passes through on the 2nd chute 1b.
Service tank 9 is for receiving the tealeaves that will screen of scheduled volume, and, the 1st transport path 6a successively to vertical hopper 6 supplies the tealeaves received, as shown in Figure 7 and Figure 8, primarily of can receive scheduled volume the tealeaves that will screen incorporating section 9a, the screw rod 9b be disposed in the 9a of this incorporating section, form for the leaf spring S that makes incorporating section 9a vibrate and driving mechanism 11.The supply port 9c be communicated with the 1st transport path 6a of vertical hopper 6 is formed in a side of incorporating section 9a.
Screw rod 9b is configured at the length direction of incorporating section 9a extended, and its 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 being supplied to vertical hopper 6 here.Further, incorporating section 9a is vibrated relative to framework F by driving mechanism 11 and leaf spring S, utilizes this vibration that the tea leaf conveying of inside is delivered to supply port 9c.
So, usually screw rod 9b rotary actuation is made, thus, supply tealeaves to vertical hopper 6 successively, and, tealeaves in the 9a of incorporating section reduces and is difficult to by after screw rod 9b conveying, driving mechanism 11 is driven, by the effect of this driving force and leaf spring S, this incorporating section 9a is vibrated, thereby, it is possible to supply remaining tealeaves to vertical hopper 6.Thereby, it is possible to do not supply to vertical hopper 6 tealeaves received in the 9a of incorporating section with remaining.
Then, the foreign matter screening plant of above-mentioned tealeaves and the effect of ancillary equipment are described.
In the incorporating section 9a of service tank 9, throw in tealeaves, when making screw rod 9b rotary actuation under the state of receiving scheduled volume, the tealeaves in the 9a of this incorporating section arrives supply port 9c successively, from being supplied to the 1st transport path 6a of vertical hopper 6 here to carry upward.This tealeaves transported is discharged from outlet 6d, arrives the 1st transport path 7a of loose tea feed appliance 7.
The tealeaves arriving the 1st transport path 7a is transferred successively by the effect of vibration of loose tea feed appliance 7, fall from end 7aa, after arriving the 1st feed path 8a throwing in feed appliance 8, be transferred successively by the effect of vibration of this input feed appliance 8, fall from its end, be supplied to the top of the 1st chute 1a.So, tealeaves passes through on the 1st chute 1a, in the process fallen from the bottom of the 1st chute 1a, carry out the shooting based on line-scan camera 3, the judgement based on identifying unit 10 and the screening based on air nozzle 4, utilize air nozzle 4 that foreign matter is blown away recovery unit B1, meanwhile, the tealeaves arrival undertaking parts 5a not changing because of air nozzle 4 and fall track is only had.Above, the screening end of job of the 1st time.
Then, the 2nd transport path 6b that the tealeaves arriving undertaking parts 5a is directed to vertical hopper 6 by guide portion 6c, is carried again upward.This tealeaves transported is discharged from outlet 6e, arrives the 2nd transport path 7b of loose tea feed appliance 7.The tealeaves arriving the 2nd transport path 7b is transferred successively by the effect of vibration of loose tea feed appliance 7, fall from end 7ba, after arriving the 2nd feed path 8b throwing in feed appliance 8, be transferred successively by the effect of vibration of this input feed appliance 8, fall from the end throwing in feed appliance 8, be supplied to the top of the 2nd chute 1b.
So, tealeaves passes through on the 2nd chute 1b, in the process fallen from the bottom of the 2nd chute 1b, carry out the shooting based on line-scan camera 3, the judgement based on identifying unit 10 and the screening based on air nozzle 4, only have the tealeaves arrival undertaking parts 5b not changing because of air nozzle 4 and fall track.In addition, arrive the tealeaves accepting parts 5b and directly fall, be accommodated in recovery unit B2.Above, the screening end of job of the 2nd time.
Like this, tealeaves circulation in 2 chutes (the 1st chute 1a and the 2nd chute 1b) is made also to pass through 2 chutes successively, thereby, it is possible to carry out 2 times to screen the foreign matter removed in tealeaves, so, more reliably can carry out the screening of the foreign matter be mixed in tealeaves.In addition, in the present embodiment, 2 chutes are set up in parallel, but, also can be configured to be set up in parallel the chute of more than 3 and carry out the screening of the tealeaves of more than 3 times.
According to the foreign matter screening plant of above-mentioned tealeaves, multiple (2) chute is set up in parallel relative to the width of device, and, possess that to make to fall condition approximate equality consistent and tealeaves can be made to drop to the input feed appliance 8 on the top of each chute, to supply tealeaves successively on the plurality of chute (the 1st chute 1a and the 2nd chute 1b), so, can the height dimension of device be suppressed less, further, screening precision can be improved.That is, tealeaves is made to drop to the 1st chute 1a and the 2nd chute 1b that are set up in parallel respectively from same input feed appliance 8, so it is consistent that it falls condition approximate equality.
The multiple 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) are formed in input feed appliance 8, so, can more reliably make the condition that the falls approximate equality in each chute consistent.And, supply the input feed appliance 8 of unit is made up of single vibration feeder, and, the conveyor surface of this vibration feeder is divided into multiple, form multiple feed path (the 1st feed path 8a and the 2nd feed path 8b), so, can dual-purpose one feed unit that makes tealeaves drop to multiple chute, can the simplification of implement device structure, manufacturing cost and the reduction of operating cost, the facilitation of maintenance.
In the present embodiment, also be made up of single vibration feeder respectively as the vertical hopper 6 of supply unit and loose tea feed appliance 7, its conveyor surface and delivery site are divided into multiple (2), form multiple transport path, so, a supply unit can be made to have 2 transport paths concurrently, same with input feed appliance 8, can the simplification of implement device structure, manufacturing cost and by the reduction of cost, the facilitation of maintenance.
And then, correspond respectively to the multiple tealeaves feed paths (the 1st feed path 8a and the 2nd feed path 8b) thrown in feed appliance 8, possesses the supply unit (vertical hopper 6 and loose tea feed appliance 7) be formed with for the multiple transport paths (the 1st transport path 7a in the 1st transport path 6a in vertical hopper 6, the 2nd transport path 6b and loose tea feed appliance 7, the 2nd transport path 7b) to each feed path conveying tealeaves, so, can be more prone to and reliably carry out when repeatedly screening for the tealeaves conveying of throwing in feed appliance 8.
Be explained above present embodiment, but, the present invention is not limited thereto, such as, also can irradiate the light of the color beyond blueness from the 1st luminescence unit, detect its reverberation and the difference based on the bias light of the 2nd luminescence unit, utilize identifying unit to judge whether be caught on camera thing be foreign matter.That is, in the present embodiment, the characteristic of the tealeaves producing red fluorescence when irradiating blue light is utilized, but, even if do not utilize this characteristic, as long as according to the reverberation from the 1st luminescence unit with judge foreign matter based on the bias light of the 2nd luminescence unit, then can be any-mode.
In addition, in the present embodiment, the foreign matter screening of (2 times) is carried out repeatedly, but, also can only carry out once or carry out the foreign matter screening of 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 (i.e. tealeaves) that air nozzle also can be utilized to blow away be not judged as foreign matter, make it to fall from the track falling track different formed based on chute, thereby, it is possible to screening tealeaves and foreign matter.
And then in the present embodiment, about the supply unit applied in foreign matter screening plant, input feed appliance 8 and loose tea feed appliance 7 are made up of vibration feeder, but replacing, 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 can carrying 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, but, also can be feed unit (there is the vibration feeder of the 1st feed path and there is the vibration feeder etc. of the 2nd feed path) individually.
[utilizability in industry]
As long as image unit image pickup scope and at the 2nd luminescence unit and the foreign matter screening plant being caught on camera the tealeaves being provided with slit between thing, even if the device that then face shaping is different or addition of the device etc. of other functions, also can apply.
Claims (5)
1. a foreign matter screening plant for tealeaves, the foreign matter screening plant of this tealeaves has:
Chute, its predetermined oblique angle arranges, and tealeaves can be made to lead to bottom from top;
Image unit, it makes a video recording to obtain image to the tealeaves that the bottom from described chute falls;
1st luminescence unit, it irradiates light from this image unit side, to obtain the reverberation from being caught on camera thing;
2nd luminescence unit, its background side from the image utilizing described image unit to take irradiates light;
Identifying unit, its according in the image that obtained by described image unit, from the reverberation of described 1st luminescence unit and the bias light from described 2nd luminescence unit, judge whether be caught on camera thing is foreign matter; And
Air nozzle, it blows away to be judged to be to be that the part or blow away of foreign matter is judged to be it is not the part of foreign matter, thus, make this part to fall from the track falling track different formed based on described chute, thus can screen by this identifying unit,
The foreign matter screening plant of this tealeaves is used for tealeaves is passed through in described chute, thus screens and remove the foreign matter be mixed in tealeaves,
The feature of the foreign matter screening plant of this tealeaves is,
By described image unit image pickup scope and at described 2nd luminescence unit be caught on camera the slit being provided with between thing and suppressing optically focused effect, judge, screen and remove the transparent foreign matter with optically focused effect be mixed in tealeaves, described slit is arranged between described chute and described 2nd luminescence unit.
2. the foreign matter screening plant of tealeaves according to claim 1, is characterized in that,
Described image unit comprises the line-scan camera that image pickup scope is configured to wire, and the image pickup scope along this wire is formed with described slit.
3. the foreign matter screening plant of tealeaves according to claim 1 and 2, is characterized in that,
A pair light-blocking member that described slit is formed as enabling to cover relative to described image unit the light of described 2nd luminescence unit is separated preliminary dimension, and, the size of separation of this light-blocking member can be changed and adjust slit width arbitrarily.
4. the foreign matter screening plant of tealeaves according to claim 1 and 2, is characterized in that,
Described 1st luminescence unit irradiates blue light, and expose to tealeaves from the blue light of the 1st luminescence unit, obtain red fluorescence from this tealeaves thus, and, described identifying unit, according to this red fluorescence having described image unit shooting of having no way of, judges whether be caught on camera thing is foreign matter.
5. the foreign matter screening plant of tealeaves according to claim 1 and 2, is characterized in that,
Bias light from described 2nd luminescence unit is made a video recording by described image unit by baffle reflection, and, the angle of this reflecting plate can be changed 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 CN102049391A (en) | 2011-05-11 |
| CN102049391B true CN102049391B (en) | 2015-04-22 |
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| 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) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE102012216163B4 (en) * | 2012-01-11 | 2017-03-09 | Robert Bosch Gmbh | Device for feeding caps with monitoring system |
| KR101194776B1 (en) * | 2012-01-19 | 2012-10-25 | 주식회사 아이디알시스템 | Color sorting device of three step |
| 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 |
| 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 |
| 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 |
| CN110918480B (en) * | 2019-12-17 | 2024-06-14 | 安徽农业大学 | Tea fresh leaf grading treatment equipment and grading treatment method |
| JP7404883B2 (en) * | 2020-01-17 | 2023-12-26 | 株式会社サタケ | optical sorter |
| CN113680692B (en) * | 2021-07-28 | 2023-03-24 | 三江侗族自治县仙池茶业有限公司 | Method and device for intelligently screening green tea |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135114A (en) * | 1988-08-11 | 1992-08-04 | Satake Engineering Co., Ltd. | Apparatus for evaluating the grade of rice grains |
| CN1129615A (en) * | 1995-02-24 | 1996-08-28 | 株式会社佐竹制作所 | Cereal grain color sorting apparatus |
| US5555984A (en) * | 1993-07-23 | 1996-09-17 | National Recovery Technologies, Inc. | Automated glass and plastic refuse sorter |
| CN1428602A (en) * | 2001-08-23 | 2003-07-09 | 株式会社安西总合研究所 | Grain discriminating device and method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4697709A (en) * | 1985-09-03 | 1987-10-06 | Delta Technology Corporation | Sorter for agricultural products |
| JPS6466550A (en) * | 1987-09-07 | 1989-03-13 | Toshiba Corp | Foreign matter selector |
| JP3505027B2 (en) * | 1996-02-28 | 2004-03-08 | 株式会社クボタ | Defective device |
| JP2000107703A (en) * | 1998-09-30 | 2000-04-18 | Kazuhiko Moriyama | Method and machine for separating defective rice mixed in mixed rice |
| JP3058196U (en) * | 1998-10-02 | 1999-06-08 | 株式会社安西総合研究所 | Sorting device |
| JP2002039952A (en) * | 2000-07-24 | 2002-02-06 | Mitsubishi Rayon Co Ltd | Apparatus and method for inspecting defect |
| JP2005066434A (en) * | 2003-08-22 | 2005-03-17 | Anzai Sogo Kenkyusho:Kk | Apparatus for sorting foreign matter in tea leaf |
| JP2006158998A (en) * | 2004-12-02 | 2006-06-22 | Nippon Sheet Glass Co Ltd | Warping sorting apparatus for rod |
| JP5016293B2 (en) * | 2006-11-08 | 2012-09-05 | カワサキ機工株式会社 | Tea leaf color sorter |
-
2009
- 2009-11-04 JP JP2009252833A patent/JP5630986B2/en not_active Expired - Fee Related
-
2010
- 2010-11-02 CN CN201010530737.6A patent/CN102049391B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135114A (en) * | 1988-08-11 | 1992-08-04 | Satake Engineering Co., Ltd. | Apparatus for evaluating the grade of rice grains |
| US5555984A (en) * | 1993-07-23 | 1996-09-17 | National Recovery Technologies, Inc. | Automated glass and plastic refuse sorter |
| CN1129615A (en) * | 1995-02-24 | 1996-08-28 | 株式会社佐竹制作所 | Cereal grain color sorting apparatus |
| CN1428602A (en) * | 2001-08-23 | 2003-07-09 | 株式会社安西总合研究所 | Grain discriminating device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011098255A (en) | 2011-05-19 |
| JP5630986B2 (en) | 2014-11-26 |
| CN102049391A (en) | 2011-05-11 |
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