Fruit detecting and grading device based on machine vision

Abstract

The utility model relates to the technical field of fruit detection, in particular to a fruit detecting and grading device based on machine vision, which comprises a support plate, the conveying belt is fixedly mounted at the top of the supporting plate and used for conveying to-be-detected fruits; the conveying belt is used for conveying fruits, the at least three sets of discharging mechanisms are arranged on the same side of the conveying belt and used for discharging the fruits on the conveying belt, each discharging mechanism comprises a sliding way which is obliquely arranged, and a material blocking plate which can move up and down is arranged on each sliding way. According to the fruit sorting device, fruits of all grades are pushed into different collecting frames through different slide ways, meanwhile, when the collecting frames are full, the material blocking plate can be lowered, the fruits are intercepted in the slide ways, fruit detection and grading do not need to be stopped, the fruit processing speed can be increased, and the situation that when the collecting frames are full and new collecting frames are replaced can be avoided. And the fruits continuously fall off from the conveyor belt.

Description

TECHNICAL FIELD

[0001] The utility model relates to fruit detection technical field, concretely is fruit detection and grading device based on machine vision. BACKGROUND

[0002] In order to meet different market demand, improve the sales price, ensure food safety and promote consumer satisfaction, before fruit picking and selling, need through the equipment to the fruit and carry out detection and grading.

[0003] In prior art, such as patent application number " CN201720538861.4 " the fruit grading detection equipment and fruit grading system of a kind of fruit are proposed, the fruit image is transmitted to computer by camera, computer receives image signal, and according to the color, shape, fruit diameter, scar, mildew spot and fruit rust of fruit, etc. Comprehensive factors, fruit is graded.

[0004] But the above patent application, after fruit completes grading and is removed to the fruit recovery frame outside, when recovery frame is full, need to stop the grading detection of fruit and replace new fruit recovery frame, cannot realize the continuous detection and grading of fruit, affect the grading speed of fruit. UTILITY MODEL CONTENT

[0005] The utility model aims at providing fruit detection and grading device based on machine vision to solve the problems in the above background.

[0006] The purpose of the utility model can be realized by the following technical scheme:

[0007] Fruit detection and grading device based on machine vision, the fruit detection and grading device based on machine vision includes support plate;

[0008] Conveyer belt, conveyer belt fixed installation is in the top of support plate, for conveying the fruit to be detected;

[0009] At least three groups of blanking mechanism, blanking mechanism sets up in the same side of conveyer belt, for the blanking of fruit on conveyer belt, blanking mechanism includes the chute of oblique arrangement, the chute is provided with the baffle that can be up and down active;

[0010] The chute is fixedly connected with support frame, the support frame is fixedly connected with connecting frame, the both sides of connecting frame inner wall are all fixedly connected with pressure spring, and one end of pressure spring is fixedly connected with positioning pressing plate, and the bottom of positioning pressing plate is obliquely arranged.

[0011] Preferably, one side of the positioning pressing plate is fixedly connected with a limiting shaft, one end of the limiting shaft penetrates through the connecting frame and extends to the outside of the connecting frame, the top of the material blocking plate is fixedly connected with a pull rod, and the top of the pull rod penetrates through the supporting frame and extends to the outside of the supporting frame.

[0012] Preferably, both sides of the material blocking plate are fixedly connected with guide rods, both sides of the supporting frame are provided with sliding grooves, and the guide rods and the sliding grooves are in sliding connection.

[0013] Preferably, one side of the conveying belt is provided with at least three groups of pushing mechanisms, the pushing mechanism comprises a supporting seat, a pushing cylinder is fixedly installed at the top of the supporting seat, a pushing plate is fixedly connected to the output end of the pushing cylinder, the pushing plate is used for pushing fruits on the conveying belt to the chute, and the both ends of the pushing plate are fixedly connected with inclined protection plates.

[0014] Preferably, an optical sensor is installed at the top of the supporting plate and above the conveying belt, and the optical sensor is used for detecting whether fruits pass on the conveying belt.

[0015] Preferably, an industrial camera is installed at the top of the supporting plate and above the conveying belt, and the industrial camera is used for taking pictures of the fruits and analyzing the pictures through machine vision.

[0016] The beneficial effects of the present application are as follows:

[0017] The present application cooperates the optical sensor, the industrial camera and the pushing cylinder, pushes the fruits of different grades through different chutes into different collecting frames, and when the collecting frame is full, the material blocking plate can be lowered to intercept the fruits in the chute, so that the fruit detection and grading can be realized without stopping, the fruit processing speed is improved, and the fruits can be prevented from continuously falling from the conveying belt when the collecting frame is full and a new collecting frame is replaced. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor;

[0019] Figure 1 is a schematic view of the whole structure of the present application;

[0020] Figure 2 is a schematic view of the structure of the chute part in the present application; Figure 1

[0021] Figure 3 is a sectional view of the connecting frame part in the present application; Figure 2 ​​

[0022] Figure 4 The utility model Figure 1 Structure diagram of the rear view part of the conveying belt.

[0023] The reference signs in the drawings are as follows:

[0024] 1, support plate; 2, conveying belt; 301, chute; 302, material blocking plate; 4, support frame; 501, connecting frame; 502, pressure spring; 503, positioning pressing plate; 6, limiting shaft; 7, pull rod; 8, guide rod; 9, sliding groove; 10, support seat; 11, pushing cylinder; 12, material pushing plate; 121, protective plate; 13, photoelectric sensor; 14, industrial camera. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] As Figure 1 , the fruit detection and grading device based on machine vision comprises a support plate 1, which is horizontally arranged and can be fixed on an external processing table;

[0027] A conveying belt 2 is fixedly installed on the top of the support plate 1 and is used for conveying the fruits to be detected.

[0028] At least three groups of discharging mechanisms are arranged on the same side of the conveying belt 2 and are used for discharging the fruits on the conveying belt 2. The discharging mechanism comprises an inclined chute 301 fixed on the support plate 1, one end of the chute 301 is communicated with the top of the conveying belt 2, and a fruit collecting frame is arranged at the bottom of the low end of the chute 301 to collect the fruits falling through the chute 301. A material blocking plate 302 movably arranged on the chute 301 can be lowered into the interior of the chute 301.

[0029] As Figure 1 , Figure 2 and Figure 3The support frame 4 is fixedly connected on the slide 301, the two sides of the support frame 4 are fixed on the outer surface of the slide 301, the support frame 4 is fixedly connected with the connecting frame 501, the two sides of the inner wall of the connecting frame 501 are fixedly connected with the pressure spring 502, the pressure spring 502 applies pressure to the positioning pressing plate 503 in the direction away from the pressure spring 502, one end of the pressure spring 502 is fixedly connected with the positioning pressing plate 503, and the bottom of the positioning pressing plate 503 is inclinedly arranged.

[0030] As Figure 1 , Figure 2 and Figure 3 , one side of the positioning pressing plate 503 is fixedly connected with the limiting shaft 6, one end of the limiting shaft 6 penetrates through the connecting frame 501 and extends to the outside of the connecting frame 501, the limiting shaft 6 enables the positioning pressing plate 503 to be horizontally movable, and the top of the material blocking plate 302 is fixedly connected with the pull rod 7.

[0031] As Figure 1 and Figure 2 , the two sides of the material blocking plate 302 are fixedly connected with the guide rod 8, the two sides of the support frame 4 are provided with the sliding groove 9, and the guide rod 8 and the sliding groove 9 are in sliding connection, so that the guide rod 8 and the material blocking plate 302 fixed with the guide rod 8 can only move up and down in the vertical direction.

[0032] As Figure 1 , Figure 2 and Figure 4 , one side of the conveying belt 2 is provided with at least three groups of pushing mechanisms, the number of the pushing mechanisms is consistent with that of the discharging mechanisms, the pushing mechanism comprises the support seat 10, the support seat 10 is fixed on the support plate 1, the top of the support seat 10 is fixedly provided with the pushing cylinder 11, the output end of the pushing cylinder 11 is fixedly connected with the pushing plate 12, the pushing plate 12 is aligned with the slide 301, the pushing plate 12 is used for pushing the fruits on the conveying belt 2 to the slide 301, and the two ends of the pushing plate 12 are fixedly connected with the inclined protection plate 121.

[0033] As Figure 1 and Figure 4 , the top of the support plate 1 and located at one side of the conveying belt 2 is provided with the photoelectric sensor 13, the photoelectric sensor 13 is prior art, and the photoelectric sensor 13 is used for detecting whether the fruits pass on the conveying belt 2.

[0034] As Figure 1 and Figure 4The top of the support plate 1 and above the conveying belt 2 are provided with an industrial camera 14, which is a prior art, used for taking pictures of the fruits and analyzing the pictures through machine vision, the photoelectric sensor 13, the industrial camera 14 and the push cylinder 11 are sequentially arranged along the conveying direction of the conveying belt 2, and the automatic control between the photoelectric sensor 13, the industrial camera 14 and the push cylinder 11 is realized through a PLC circuit in the prior art.

[0035] The working principle of the fruit detection and grading device based on machine vision provided by the utility model is as follows:

[0036] When it is necessary to detect and grade the fruits, the fruits are firstly dropped onto the conveying belt 2 one by one through an external feeding mechanism and are conveyed along with the conveying belt 2;

[0037] During the conveying of the fruits on the conveying belt 2, the photoelectric sensor 13 detects the fruits and then transmits signals to the industrial camera 14, the industrial camera 14 takes pictures, and then analyzes the pictures through machine vision, the size of the fruit diameter, the color and whether there is a defect are graded, and the fruits of different grades are pushed into different collecting frames through the corresponding push cylinders 11 and the push plates 12.

[0038] When the external collecting frame is full, the pull rod 7 can be pressed downward to drive the blocking plate 302 to move downward, the blocking plate 302 is lowered into the slide 301, at this time, the fruits are intercepted in the slide 301 and cannot fall down, and vice versa, after the external collecting frame is replaced, the pull rod 7 is pulled upward to drive the blocking plate 302 to rise, the blocking plate 302 rises, presses the inclined surface at the bottom of the two positioning plates 503, and then is clamped between the two positioning plates 503, under the action of the pressure spring 502, the blocking plate 302 is clamped.

[0039] Compared with the related art, the fruit detection and grading device based on machine vision has the following beneficial effects:

[0040] The fruits of different grades are pushed into different collecting frames through different slides 301 by cooperation between the photoelectric sensor 13, the industrial camera 14 and the push cylinder 11, and when the collecting frame is full, the blocking plate 302 can be lowered to intercept the fruits in the slide 301, so that the detection and grading of the fruits can be realized without stopping, the fruit processing speed is improved, and the fruits can be prevented from continuously falling from the conveying belt 2 when the collecting frame is replaced with a new one.

[0041] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A machine vision based fruit detection and grading apparatus, characterized in that, The machine vision-based fruit detection and grading device comprises a support plate (1); A conveying belt (2) is fixedly installed on the top of the support plate (1) and used for conveying fruits to be detected; At least three groups of discharging mechanisms are arranged on the same side of the conveying belt (2) and used for discharging fruits on the conveying belt (2), wherein each discharging mechanism comprises an inclined chute (301) provided with a movable blocking plate (302). The chute (301) is fixedly connected with a support frame (4), the support frame (4) is fixedly connected with a connecting frame (501), the inner wall of the connecting frame (501) is fixedly connected with a pressure spring (502) on both sides, one end of the pressure spring (502) is fixedly connected with a positioning pressing plate (503), and the bottom of the positioning pressing plate (503) is inclined.

2. The machine vision based fruit inspection and grading apparatus as claimed in claim 1, wherein, One side of the positioning pressing plate (503) is fixedly connected with a limiting shaft (6), one end of the limiting shaft (6) penetrates through the connecting frame (501) and extends to the outside of the connecting frame (501), the top of the blocking plate (302) is fixedly connected with a pull rod (7), and the top of the pull rod (7) penetrates through the support frame (4) and extends to the outside of the support frame (4).

3. The machine vision based fruit inspection and grading apparatus as claimed in claim 2, wherein, Both sides of the blocking plate (302) are fixedly connected with guide rods (8), and both sides of the support frame (4) are provided with sliding grooves (9), and the guide rods (8) and the sliding grooves (9) are in sliding connection.

4. The machine vision based fruit inspection and grading apparatus as claimed in claim 1, wherein, One side of the conveying belt (2) is provided with at least three groups of pushing mechanisms, the pushing mechanism comprises a support seat (10), the top of the support seat (10) is fixedly installed with a pushing cylinder (11), the output end of the pushing cylinder (11) is fixedly connected with a pushing plate (12), the pushing plate (12) is used for pushing the fruits on the conveying belt (2) to the chute (301), and both ends of the pushing plate (12) are fixedly connected with inclined protection plates (121).

5. The machine vision based fruit inspection and grading apparatus as claimed in claim 1, wherein, The top of the support plate (1) and one side of the conveying belt (2) are provided with a photoelectric sensor (13), which is used for detecting whether the fruits on the conveying belt (2) pass.

6. The machine vision-based fruit inspection and grading apparatus according to claim 5, wherein, The top of the support plate (1) and above the conveying belt (2) are provided with an industrial camera (14), which is used for taking pictures of the fruits and analyzing the pictures through machine vision.

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