CN210847268U - Position adjusting mechanism in navel orange LIBS on-line measuring process - Google Patents
Position adjusting mechanism in navel orange LIBS on-line measuring process Download PDFInfo
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- CN210847268U CN210847268U CN201921932547.XU CN201921932547U CN210847268U CN 210847268 U CN210847268 U CN 210847268U CN 201921932547 U CN201921932547 U CN 201921932547U CN 210847268 U CN210847268 U CN 210847268U
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Abstract
The utility model provides a position adjusting mechanism in the LIBS online detection process of navel oranges, which comprises a frame, a feed inlet, a feeding mechanism, a position adjusting part, a detection positioning port and a discharge port; the feeding mechanism takes a wheel blank as a base body, a plurality of elastic sheet groups are mounted on the wheel blank, and the wheel blank can rotate relative to the rack; the position adjusting component is positioned in the rack, and is arranged above the feeding mechanism and consists of a plurality of beam waist type rollers distributed in an arc shape. The utility model discloses the method of carrying out position adjustment to the navel orange does: through wheel embryo, shell fragment group and the cooperation of wheel train, adjust the position of navel orange at the in-process that the navel orange transported, both guaranteed work efficiency, the uniformity in navel orange position when having guaranteed to detect again improves the detection accuracy. The utility model discloses a position adjustment mechanism and method are used for navel orange quality safety LIBS on-line measuring, can make the navel orange carry out diversified adjustment position in the space, and reducible detection time produces error because of the navel orange is not of uniform size.
Description
Technical Field
The utility model relates to a fruit vegetables element detection technical field especially relates to a position adjustment mechanism in navel orange LIBS on-line measuring process.
Background
The navel orange is delicious in taste, rich in various nutrient components necessary for human bodies and popular with consumers in the market. Before navel oranges enter the market, manufacturers often identify navel oranges in a grading way according to the color, the appearance and the like of the navel oranges and classify the navel oranges according to the priority. The method only grades the appearance quality of the navel oranges, does not relate to the classification of people for the nutritional value quality requirements at present, and cannot finish the content grading of nutritional elements or harmful elements.
Laser Induced Breakdown Spectroscopy (LIBS) is a novel spectrum detection technology, pulse laser is mainly focused on the surface of a sample to generate plasma, spectral line information of various elements in the sample is obtained by collecting spectrum signals, and qualitative and quantitative analysis is further carried out on the elements in the sample. In LIBS static detection, the position of the navel orange can be manually adjusted to obtain a better and stable detection environment, so that a relatively accurate detection result is obtained. However, a great amount of time and energy are consumed for manually controlling the detection position each time, and the large-batch navel orange detection cannot be completed. LIBS dynamic detection can be used for sequentially carrying out experiments on a large number of navel oranges on a production line. However, the sizes and the placing positions of the navel oranges during detection are random, so that the intensities of the navel oranges during laser striking on the surfaces of the navel oranges are different, the stability is poor, and the signal to noise ratio is low, so that the obtained element spectral line information is influenced, and part of the navel oranges are wrongly classified.
Therefore, there is a need for a dynamic position adjustment mechanism that can accurately and efficiently perform the tasks in LIBS online detection. At the position with the maximum laser focusing intensity, the surface of the navel orange can generate better spectral signals, so that the surface of the navel orange is required to be positioned near a laser focusing point during detection. However, the laser focusing point is determined by the optical lens group and cannot be automatically focused according to the surface positions of different navel oranges, so that one point on the surface of each navel orange is approximately coincided with the laser focusing point when detection is required, namely, the position of the navel orange can be automatically adjusted in the feeding process, the working requirement is met during detection, the navel orange cannot be damaged when the position is adjusted, and the navel orange can be automatically returned and conveyed forwards after detection is finished, so that the online detection work of a large number of navel oranges is finished.
Disclosure of Invention
The utility model aims at solving the above problem, provide a but automatic adjustment navel orange position satisfies the device that detects the requirement simultaneously. The following technical scheme is adopted:
a position adjustment mechanism in navel orange LIBS on-line measuring process includes: the device comprises a frame, a feed inlet, a feeding mechanism, a detection positioning port and a discharge port;
the feeding hole is used for conveying a single navel orange to the feeding mechanism;
the feeding mechanism is positioned in the rack and used for conveying navel oranges to the detection positioning port for detection and conveying to the discharge port; the feeding mechanism takes a wheel blank as a base body, a plurality of elastic sheet groups are mounted on the wheel blank, and the wheel blank can rotate relative to the rack;
the position adjusting component is positioned in the rack, is arranged above the feeding mechanism and consists of a plurality of beam waist type rollers distributed in an arc shape;
the detection positioning port is positioned above the rack, and the center of the position adjusting component, the center of the detection positioning port and the center of the feeding mechanism are collinear;
the feed inlet and the discharge port are positioned on the opposite sides of the rack, and the discharge port is used for sending out the navel oranges out of the rack.
The utility model discloses a wheel embryo, shell fragment group and roller train cooperation, the wheel embryo transports the navel orange, and the shell fragment group is used for placing the navel orange that awaits measuring, plays the effect of buffering to the navel orange that gets into simultaneously, produces the displacement in the horizontal plane when preventing to detect, uses the gyro wheel can reduce the friction power between the pay-off in-process and the navel orange, fixes the surface position of navel orange when detecting simultaneously, prevents that the surface height is inconsistent when detecting; the position of the navel orange is adjusted in the conveying process of the navel orange, so that the working efficiency is guaranteed, the consistency of the position of the navel orange during detection is guaranteed, and the detection accuracy is improved. The utility model discloses a position adjustment mechanism is used for navel orange quality safety LIBS on-line measuring, can make the navel orange carry out diversified adjustment position in the space, reducible detection time measuring because of the produced error of navel orange not of uniform size.
Furthermore, the spring plate group consists of four spring plates which are diagonally distributed, and the navel orange can stay at the center of the spring plate group without displacement so as to influence detection.
Furthermore, the spring plate is of an L-shaped structure, preferably, stainless steel materials with the thickness of 0.2-0.5 mm are adopted, the spring plate has high elasticity, and the navel orange can roll under the action of the position adjusting component.
Furthermore, the feed inlet is connected with a V-shaped track inclined towards the rack, navel oranges enter the feeding mechanism in the same transverse oval posture after being buffered by the track, and the surfaces of the navel oranges are detected at the same spatial position.
Furthermore, the detection positioning port comprises a signal acquisition positioning port and a laser positioning port, so that LIBS detection is facilitated, and the working efficiency is improved.
Furthermore, a push plate is arranged between every two adjacent elastic sheet groups, so that feeding detection of the navel oranges is guaranteed, thrust is provided for feeding of the former sample, and a track is provided for discharging of the latter sample.
Furthermore, the rollers are distributed along an arc with the curvature radius rho of 80-120 mm, and the distance between the highest point of the arc and the center of the elastic sheet group is 50-80 mm. And after the navel oranges reach the position adjusting component, the navel oranges immediately make continuous position adjusting movement under the rolling action of the rollers, and the position of the highest point of the circular arc is detected.
Further, the roller is connected with the frame through a bearing.
Further, the wheel blank is connected with a motor, the motor drives the wheel blank to intermittently rotate, and the intermittent fixed-shaft rotation in a preset period is completed.
Further, the motor is a stepping motor.
Further, the utility model discloses position adjustment mechanism's in navel orange LIBS on-line measuring process adjusting method, including following step:
(1) the navel oranges enter the rack through the feed inlet;
(2) a single navel orange enters the center of the shrapnel group;
(3) the wheel blank is intermittently pivoted to drive the navel oranges to move towards the discharge port, and meanwhile, the navel oranges are subjected to position adjustment movement between the position adjustment component and the elastic sheet set;
(4) when the spring piece group where the navel orange is located is rotated to be collinear with the center of the wheel blank, the center of the position adjusting component, the center of the collected signal positioning port and the center of the laser positioning port, the wheel blank stops rotating, and LIBS (laser induced breakdown spectroscopy) element analysis and detection are carried out on the navel orange;
(5) at the moment, the other navel orange on the elastic sheet group at the discharge port rolls towards the discharge port under the action of gravity to finish discharging;
(6) after the detection is finished, the wheel embryo drives the navel orange to continue to rotate, the acting force applied to the elastic sheet group where the navel orange is located is reduced along with the increase of the spatial position of the navel orange, the navel orange returns along with the resetting of the elastic sheet group, and the navel orange is discharged when the navel orange is transferred to a discharge hole;
(7) and (4) continuing rotating the wheel embryo, and repeating the actions of the steps (1) to (6) to finish the LIBS detection work of all the navel oranges.
Further, the utility model discloses position adjustment mechanism's in navel orange LIBS on-line measuring process adjusting method specifically includes following step:
(1) the navel oranges reach the feeding hole through an inclined V-shaped track and enter the feeding mechanism;
(2) under the action of the push plate, the navel oranges are separated into single navel oranges, the single navel oranges enter the feeding mechanism and enter the center of the elastic piece group;
(3) under the action of the stepping motor, the wheel blank is intermittently pivoted to drive the navel oranges to move towards the discharge hole, and meanwhile, the navel oranges are adjusted to move between the roller and the elastic sheet set;
(4) when the spring piece group where the navel orange is located is rotated to be collinear with the center of the wheel blank, the center of the position adjusting component, the center of the collected signal positioning port and the center of the laser positioning port, the wheel blank stops rotating, laser is focused and hits the surface of the navel orange to generate plasma, the spectrometer finishes spectrum signal collection, and element analysis is carried out by spectrum signal analysis software;
(5) at the moment, the other navel orange on the elastic sheet group at the discharge port rolls towards the discharge port under the action of gravity, and the discharge is finished through one side of the previous push plate;
(6) after the spectrum signal is collected, the wheel embryo drives the navel orange to continue rotating, the acting force exerted on the first elastic sheet, the second elastic sheet, the third elastic sheet and the fourth elastic sheet of the elastic sheet group where the navel orange is located is reduced along with the increase of the spatial position of the sample, the navel orange returns along with the resetting of the first elastic sheet, the second elastic sheet, the third elastic sheet and the fourth elastic sheet, and when the navel orange rotates to a discharge hole, the discharging is completed through one side of the previous push plate;
(7) and (4) continuing rotating the wheel embryo, and repeating the actions of the steps (1) to (6) to finish the LIBS detection work of all the navel oranges.
Further, the blank rotates by 360 degrees/n every time, stops for 0.5s, wherein n is the number of the elastic sheet groups.
Compared with the prior art, the utility model discloses following beneficial effect can be obtained:
1. the utility model discloses a position adjustment mechanism is used for navel orange quality safety LIBS on-line measuring, can make the navel orange carry out diversified adjustment position in the space, reducible detection time measuring because of the produced error of navel orange not of uniform size.
2. The utility model discloses a shell fragment group is periodic intermittent type nature fixed shaft along with the wheel embryo and rotates, can strengthen the stability of sample detection time measuring, improves the SNR.
3. The utility model discloses a wheel embryo, shell fragment group and wheel train cooperation, the in-process that transports at the navel orange adjusts the position of navel orange, has both guaranteed work efficiency, and the uniformity in navel orange position when having guaranteed to detect again improves the detection accuracy.
4. The utility model discloses the biggest reaction force of shell fragment that adopts is 8N, can not produce the navel orange and destroy, but detect self return simultaneously, can accomplish the quick nondestructive test of navel orange quality safety LIBS.
5. The device of the utility model is simple in structure, degree of automation is high, and the method is convenient fast, and detection efficiency is high, is fit for popularizing and applying.
Drawings
Fig. 1 is a schematic structural diagram of a position adjusting mechanism of a navel orange element composition LIBS all-optical rapid detection device according to an embodiment of the present invention;
fig. 2 is a half sectional view of a mechanism for adjusting a position of a full-optical fast detection device for navel orange element composition LIBS according to an embodiment of the present invention;
fig. 3 is a spring plate distribution diagram in a spring plate group according to an embodiment of the present invention;
fig. 4 is a schematic view of a position adjusting mechanism of a full-optical fast detection apparatus for navel orange element composition LIBS according to an embodiment of the present invention;
description of reference numerals: the device comprises a motor 1, a position adjusting component 2, a feeding mechanism 3, a feeding hole 4, a discharging hole 5, a laser positioning hole 6, a signal acquisition positioning hole 7, a roller 8, a push plate 9, a first elastic sheet group 10, an inclined V-shaped track 11, a seventh elastic sheet group 12, a frame 13, a wheel blank 14, a sixth elastic sheet group 15, a bearing 16, a second elastic sheet group 17, a third elastic sheet group 18, a fourth elastic sheet group 19, a fifth elastic sheet group 20, a first elastic sheet 21, a second elastic sheet 22, a third elastic sheet 23, a fourth elastic sheet 24, a fruit feeding mechanism 25 and a grading mechanism 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Take the number n of spring plate groups to be 7 as an example, describe the position adjustment mechanism in the navel orange LIBS on-line measuring process of the present invention.
Example 1:
a position adjusting mechanism in the online detection process of navel orange LIBS is used for adjusting and controlling the position of a sample when the LIBS works online, and the accuracy of detection classification is improved. As shown in fig. 1 and 2, the position adjusting mechanism includes a frame 13, a feed port 4, a feeding mechanism 3, a position adjusting component 2, a detection positioning port, and a discharge port 5.
The feeding port 4 is located on the right side of the frame 13, and the discharging port 5 is of a downward inclined structure and located on the left side of the frame 13. A detection positioning port is arranged above the frame 13 and comprises a signal acquisition positioning port 7 and a laser positioning port 6, and the center of the signal acquisition positioning port 7 and the center of the laser positioning port 6 are collinear with the centers of the position adjusting mechanism 2 and the feeding mechanism 3.
A single navel orange gets into feeding mechanism 3 from feed inlet 4, and feeding mechanism 3 transports the navel orange to acquisition signal location mouth 7 and laser location mouth 6 below and detects to the navel orange that will detect transports discharge gate 5. The feeding mechanism 3 takes a wheel blank 14 as a base body, and is provided with seven groups of first elastic sheet groups 10, second elastic sheet groups 17, third elastic sheet groups 18, fourth elastic sheet groups 19, fifth elastic sheet groups 20 and sixth elastic sheet groups 15 which are distributed at intervals, wherein the elastic sheet groups are used for placing navel oranges to be detected, playing a role in buffering the entering navel oranges and preventing the navel oranges from displacing in a horizontal plane during detection.
The position adjusting part 2 is 6 solid beam waist type rollers 8 which are distributed in an arc shape and connected with the frame 13 through a bearing 16, friction force between the rollers and navel oranges in the feeding process can be reduced, the surface positions of the navel oranges in detection are fixed, and errors caused by inconsistent surface heights in detection are prevented.
In the state shown in fig. 2, when the wheel blank 14 is stationary, the first elastic sheet group 10 corresponds to the feed port 4, the third elastic sheet group 18 corresponds to the discharge port 5, and the center of the second elastic sheet group 17 is collinear with the center of the wheel blank 14, the center of the roller 8 in arc distribution, the center of the acquisition signal positioning port 7 and the center of the laser positioning port 6.
When the spring piece is pressed, the maximum reaction force of the single spring piece is 8N, and the navel orange cannot be damaged. The wheel blank 14 rotates 360/7 degrees every second, and stays for 0.5 second every time of rotation for LIBS detection.
Example 2:
in the position adjusting mechanism of this embodiment, on the basis of embodiment 1, each elastic sheet set is composed of four first elastic sheets 21, second elastic sheets 22, third elastic sheets 23, and fourth elastic sheets 24 which are distributed in a rectangular diagonal manner; the spring plate is of an L-shaped structure, preferably made of stainless steel material with the thickness of 0.2mm, has high elasticity and is beneficial to the navel orange to roll under the action of the position adjusting component. The position adjusting component 2 is composed of 6 solid waist-shaped rollers 8 which are connected with the frame 13 through a bearing 16 and distributed in an arc shape, the 6 rollers 8 are distributed along an arc with the curvature radius rho equal to 90mm, and the distance between the highest point of the arc and the center of the elastic sheet group is 60 mm.
Example 3:
in the position adjusting mechanism of this embodiment, on the basis of embodiment 2, the elastic pieces are made of a high-elasticity stainless steel material with a thickness of 0.4mm, a push plate 9 is arranged between two adjacent elastic piece groups, and a part formed by one elastic piece group and one push plate is called a conveying position. The push plate 9 not only ensures that the navel oranges are fed singly for detection, but also provides thrust for feeding of the former sample and provides a track for discharging of the latter sample. The position adjusting component 2 is composed of 8 solid beam waist-shaped rollers 8 which are connected with the frame 13 through a bearing 16 and distributed in an arc shape, the 8 rollers 8 are distributed along an arc with the curvature radius rho being 120mm, and the distance between the highest point of the arc and the center of the elastic sheet group is 75 mm.
Example 4:
in the position adjusting mechanism of this embodiment, on the basis of embodiment 3, the elastic piece is made of a high-elasticity stainless steel material with a thickness of 0.3mm, the feed port 4 is connected with a V-shaped track inclined toward the frame 13, and after being buffered by the track, the navel oranges enter the feeding mechanism 3 in the same transverse elliptical posture, and the surfaces of the navel oranges are detected at the same spatial position. The position adjusting component 2 is composed of 6 solid waist-shaped rollers 8 which are connected with the frame 13 through a bearing 16 and distributed in an arc shape, the 6 rollers 8 are distributed along an arc with the curvature radius rho being 100mm, and the distance between the highest point of the arc and the center of the elastic sheet group is 60 mm. The wheel blank 14 is driven by a motor 1, and the motor 1 adopts a stepping motor (model 57BYG 250B) to complete intermittent fixed-axis rotation in a preset period.
Example 5:
as shown in fig. 4, the working process of the present invention is as follows:
(1) the navel oranges reach the inclined V-shaped track 11 through the fruit feeding mechanism 25, and after being buffered by the track, the navel oranges enter the feeding mechanism 3 through the feeding hole 4 in a transverse oval posture;
(2) under the action of the push plate 9, the navel oranges are separated into single oranges to enter the feeding mechanism 3, namely the center of the first elastic sheet group 10 in the state shown in the figure 4;
(3) under the action of the stepping motor 1, the wheel blank 14 intermittently performs counterclockwise fixed-axis rotation to drive the navel orange to perform position adjustment movement between the roller 8 and the first spring plate group 10, namely after the navel orange is subjected to the action of the roller, the position of the navel orange can be adjusted in multiple directions on the spring plates which are distributed diagonally in a rectangular shape;
(4) when the first elastic piece group 10 rotates to be collinear with the center of the wheel blank 14, the center of the position adjusting component 8, the center of the collected signal positioning port 7 and the center of the laser positioning port 6, the wheel blank 14 stops rotating, laser is focused and hits the surface of the navel orange to generate plasma, a spectrometer finishes spectrum signal collection, and spectrum signal analysis software performs element analysis;
(5) at the moment, the other navel orange on the second elastic sheet group 17 at the discharge port 5 rolls towards the discharge port 5 under the action of gravity, the discharging is finished through one side of the previous push plate 9, and the navel oranges reach the grading mechanism 26 to grade the navel oranges with different sizes;
(6) after the spectrum signal is collected, the wheel blank 14 continues to rotate anticlockwise, the acting force exerted on the first elastic sheet 21, the second elastic sheet 22, the third elastic sheet 23 and the fourth elastic sheet 24 of the first elastic sheet group 10 is reduced along with the increase of the spatial position of the sample, and the navel orange returns along with the resetting of the first elastic sheet 21, the second elastic sheet 22, the third elastic sheet 23 and the fourth elastic sheet 24; when the navel oranges are conveyed to the discharge port 5, the wheel blank stops rotating, the navel oranges on the seventh elastic sheet group 12 are detected, the navel oranges on the first elastic sheet group 10 roll towards the discharge port due to the gravity effect, the discharging is completed through one side of the previous push plate 9, and the navel oranges reach the grading mechanism to grade the navel oranges with different sizes;
(7) and (4) continuing anticlockwise rotating the wheel blank 14, repeating the actions in the steps (1) to (6) and finishing the LIBS detection work of all the navel oranges.
Through the utility model discloses position adjustment mechanism's repetitive operation can realize the LIBS on-line measuring to the operational requirement of navel orange surface position, and the navel orange can be according to the diversified adjustment position of operational environment promptly, but the self return after having detected simultaneously, and does not produce the destruction to the navel orange, accomplishes the high-efficient nondestructive test work of LIBS.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (10)
1. The utility model provides a position adjustment mechanism in navel orange LIBS on-line measuring process which characterized in that includes: the device comprises a frame, a feed inlet, a feeding mechanism, a position adjusting part, a detection positioning port and a discharge port;
the feeding hole is used for conveying a single navel orange to the feeding mechanism;
the feeding mechanism is positioned in the rack and used for conveying navel oranges to the detection positioning port for detection and conveying to the discharge port; the feeding mechanism takes a wheel blank as a base body, a plurality of elastic sheet groups are mounted on the wheel blank, and the wheel blank rotates relative to the rack;
the position adjusting component is positioned in the rack, is arranged above the feeding mechanism and consists of beam waist type rollers distributed in an arc shape;
the detection positioning port is positioned above the rack, and the center of the position adjusting component, the center of the detection positioning port and the center of the feeding mechanism are collinear;
the feed inlet and the discharge port are positioned on the opposite sides of the rack, and the discharge port is used for sending out the navel oranges out of the rack.
2. The mechanism of claim 1, wherein the spring plate set comprises four spring plates arranged diagonally.
3. The mechanism of claim 2, wherein the spring plate is of an L-shaped structure.
4. The position adjusting mechanism for the navel orange LIBS in the on-line detection process of claim 3, wherein the spring plate is made of a stainless steel material with a thickness of 0.2-0.5 mm.
5. The position adjusting mechanism for the navel orange LIBS in the on-line detection process of claim 1, wherein the rollers are distributed along an arc with a curvature radius rho of 80-120 mm, and the highest point of the arc is 50-80 mm away from the center of the elastic sheet group.
6. The mechanism of claim 1, wherein the feed inlet is connected to a V-shaped track that is inclined toward the frame.
7. The position adjusting mechanism for the navel orange LIBS on-line detection process according to claim 1, wherein the detection positioning port comprises a signal acquisition positioning port and a laser positioning port.
8. The position adjusting mechanism for the navel orange LIBS on-line detection process according to claim 1, wherein a push plate is arranged between two adjacent spring plate sets, and the spring plate set at the front part of the wheel blank in the rotation direction and the push plate at the rear side of the spring plate set form a conveying position.
9. The position adjusting mechanism for the navel orange LIBS in the on-line detection process as claimed in claim 1, wherein the roller is connected with the frame through a bearing.
10. The position adjusting mechanism for the navel orange LIBS on-line detection process as claimed in claim 1, wherein the wheel blank is connected to a motor, and the motor is used for driving the wheel blank to intermittently rotate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921932547.XU CN210847268U (en) | 2019-11-11 | 2019-11-11 | Position adjusting mechanism in navel orange LIBS on-line measuring process |
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| CN201921932547.XU CN210847268U (en) | 2019-11-11 | 2019-11-11 | Position adjusting mechanism in navel orange LIBS on-line measuring process |
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| CN210847268U true CN210847268U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694943A (en) * | 2019-11-11 | 2020-01-17 | 江西农业大学 | Position adjusting mechanism and method for navel orange LIBS (laser-induced breakdown Spectroscopy) in online detection process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694943A (en) * | 2019-11-11 | 2020-01-17 | 江西农业大学 | Position adjusting mechanism and method for navel orange LIBS (laser-induced breakdown Spectroscopy) in online detection process |
| CN110694943B (en) * | 2019-11-11 | 2024-02-09 | 江西农业大学 | Position adjusting mechanism and method in navel orange LIBS (LIBS) online detection process |
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