Machine vision-based food material color grade positioning mechanism

Abstract

The utility model discloses food material color grade positioning mechanism based on machine vision relates to food processing technical field. The utility model discloses a conveyor, is provided with the guide mechanism and height adjusting mechanism on the conveyor, the guide mechanism includes a plurality of rectangular supports fixedly connected at the top of conveyor, is rotatably connected with the bidirectional screw rod between two rectangular supports of left side, the front side of bidirectional screw rod is penetrated to the rectangular support of left side front side and extends to outside, the height adjusting mechanism includes a plurality of fixed links fixedly connected at the top of conveyor, and the outer wall slidingly connected with rectangular plate of a plurality of fixed links. The utility model discloses through setting up the guide mechanism, has solved the food material color grade positioning mechanism based on machine vision in the use process of existing, and the position of food material is easy to appear the deviation, thereby influences the position when detecting, leads to the result of detection and actual inconsistency, the problem of influence processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of food processing technology, and in particular relates to a machine vision-based food color grading and positioning mechanism. Background Technology

[0002] In today's rapidly developing food industry, consumers have reached unprecedented levels of demand for food quality. As the source of food production, the quality control of ingredients is of paramount importance. Color, as a core element for judging the quality, freshness, and maturity of ingredients, is a key link in ensuring food quality and enhancing the competitiveness of the food industry.

[0003] However, in the use of existing machine vision-based food color grading and positioning mechanisms, the position of the food is prone to shift, which affects the position during detection, resulting in the detection results not matching the actual situation and affecting processing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a machine vision-based food color grading and positioning mechanism. By setting a guiding mechanism, it solves the problem that the position of food is easily offset during use in existing machine vision-based food color grading and positioning mechanisms, which affects the position during detection, resulting in the detection results not matching the actual situation and affecting processing efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a machine vision-based food color grading and positioning mechanism, including a conveyor, on which a guiding mechanism and a height adjustment mechanism are provided;

[0007] The guiding mechanism includes several rectangular supports fixedly connected to the top of the conveyor. A bidirectional threaded rod is rotatably connected between two rectangular supports on the left side. The front side of the bidirectional threaded rod passes through the rectangular support on the left front side and extends outward. Two movable plates are threadedly connected to the outer wall of the bidirectional threaded rod. The height adjustment mechanism includes several fixed rods fixedly connected to the top of the conveyor. Rectangular plates are slidably connected to the outer walls of the several fixed rods.

[0008] Furthermore, a sliding rod is fixedly connected between the two rectangular supports on the right side. The sliding rod passes through the two movable plates and is slidably connected to the two movable plates. Two spring telescopic rods are fixedly connected to the sides of the two movable plates that are close to each other. Two guide plates are fixedly connected to the sides of several spring telescopic rods that are close to each other.

[0009] Furthermore, a ratchet gear is fixedly connected to the outer wall of the bidirectional threaded rod, a bracket is fixedly connected to the outer wall of the rectangular bracket located on the left front side, a spring telescopic rod II is fixedly connected to the left side of the bracket, a limit block is fixedly connected to the left side of the spring telescopic rod II, and a handle is fixedly connected to the outer wall of the bidirectional threaded rod.

[0010] Furthermore, the top of the conveyor and the bottom of the rectangular plate are both fixedly connected to a fixing block, and two hinge rods are hinged to each of the two fixing blocks.

[0011] Furthermore, two bidirectional hinge blocks are hinged between several of the hinge rods, and an electric telescopic rod is fixedly connected between the two bidirectional hinge blocks. An image sensor is fixedly connected to the bottom of the rectangular plate.

[0012] This utility model has the following beneficial effects:

[0013] 1. By setting a guiding mechanism, according to the size of the ingredients, turning the handle clockwise drives the double-threaded rod to rotate. This causes the double-threaded rod to rotate the ratchet clockwise, thus the arc surface of the ratchet presses against the arc surface of the limiting block to the right, causing the limiting block to move to the right. At this time, the limiting block deforms and generates elastic force by pressing against the second spring telescopic rod, causing the limiting block to move away from the ratchet's restraint, allowing the double-threaded rod to rotate clockwise. When the ratchet rotates to another groove, the elastic force of the second spring telescopic rod pushes the limiting block into the ratchet. Repeatedly rotating the double-threaded rod clockwise causes the two moving plates to slide on the slide bar and move closer to each other. The parallel design of the double-threaded rod and the slide bar ensures smooth movement of the two moving plates. Each movable plate is driven by two spring telescopic rods to bring the guide plates closer together. When it is necessary to rotate the bidirectional threaded rod counterclockwise to move the two movable plates away from each other, the limit block is pulled to the right to release the restriction between the right-angled surface of the limit block and the right-angled surface of the ratchet gear. This allows the bidirectional threaded rod to rotate counterclockwise and move the two movable plates away from each other. After the size is adjusted, the conveyor is started to move the food to the image sensor. Under the action of several spring telescopic rods, the food is prevented from being too large and affecting the conveying of the food. This avoids the image acquisition effect being affected by the shaking or displacement of the food, thus providing a reliable data foundation for subsequent color grading and positioning. It also prevents the equipment from being damaged by the food due to its large size, and at the same time, it avoids the food being damaged by excessive compression during the conveying process, ensuring the integrity and quality of the food.

[0014] 2. By setting up a height adjustment mechanism, the electric telescopic rod is activated to push the two bidirectional hinge blocks away from each other. At this time, the two bidirectional hinge blocks drive the corresponding two hinge rods to move, causing several fixed blocks to rotate. The angle between the hinge rods increases, thereby driving the rectangular plate to move downward on the fixed rods. With the parallel design of the fixed rods, the rectangular plate moves downward smoothly. The rectangular plate then drives the image sensor to move downward, thereby adjusting the position of the image sensor to the optimal acquisition height, obtaining a high-resolution image with accurate color reproduction, providing a high-quality data foundation for subsequent color analysis and grading.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the guiding mechanism of this utility model;

[0019] Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0020] Figure 4 This is a partial cross-sectional view of the height adjustment mechanism of this utility model;

[0021] Figure 5 This utility model Figure 4 A magnified structural diagram of B in the diagram.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Conveyor; 2. Guiding mechanism; 211. Rectangular bracket; 212. Bidirectional threaded rod; 213. Moving plate; 214. Slide rod; 215. Spring telescopic rod one; 216. Guide plate; 217. Ratchet; 218. Bracket; 219. Spring telescopic rod two; 2110. Limiting block; 2111. Handle; 3. Height adjustment mechanism; 311. Fixed rod; 312. Rectangular plate; 313. Fixed block; 314. Hinge rod; 315. Bidirectional hinge block; 316. Electric telescopic rod; 317. Image sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 As shown, this utility model is a machine vision-based food color grading and positioning mechanism, including a conveyor 1. The conveyor 1 is equipped with a guide mechanism 2 and a height adjustment mechanism 3. The guide mechanism 2 includes several rectangular supports 211 fixedly connected to the top of the conveyor 1. A bidirectional threaded rod 212 is rotatably connected between two rectangular supports 211 on the left side. The front side of the bidirectional threaded rod 212 passes through the rectangular support 211 on the left front side and extends outward. Two movable plates 213 are threadedly connected to the outer wall of the bidirectional threaded rod 212. A sliding rod 214 is fixedly connected between two rectangular supports 211 on the right side. The sliding rod 214 passes through the two movable plates 213 and is slidably connected to the two movable plates 213. Two spring telescopic rods are fixedly connected to the sides of the two movable plates 213 that are close to each other. 215, several spring telescopic rods 215 are fixedly connected to two guide plates 216 on their adjacent sides, a ratchet gear 217 is fixedly connected to the outer wall of a bidirectional threaded rod 212, a bracket 218 is fixedly connected to the outer wall of a rectangular bracket 211 located on the left front side, a spring telescopic rod 219 is fixedly connected to the left side of the bracket 218, a limit block 2110 is fixedly connected to the left side of the spring telescopic rod 219, and a handle 2111 is fixedly connected to the outer wall of the bidirectional threaded rod 212. By setting the guide mechanism 2, the image acquisition effect is avoided due to the shaking or displacement of the food, thus providing a reliable data basis for subsequent color grading and positioning, preventing damage to the equipment due to excessive food size, and also preventing the food from being damaged by excessive compression during transportation, ensuring the integrity and quality of the food.

[0026] The height adjustment mechanism 3 includes several fixed rods 311 fixedly connected to the top of the conveyor 1. A rectangular plate 312 is slidably connected to the outer wall of the fixed rods 311. Fixed blocks 313 are fixedly connected to the top of the conveyor 1 and the bottom of the rectangular plate 312. Two hinge rods 314 are hinged on each of the two fixed blocks 313. Two bidirectional hinge blocks 315 are hinged between the several hinge rods 314. An electric telescopic rod 316 is fixedly connected between the two bidirectional hinge blocks 315. An image sensor 317 is fixedly connected to the bottom of the rectangular plate 312. By setting the height adjustment mechanism 3, the sensor is positioned at the optimal acquisition height to obtain images with high resolution and accurate color reproduction, providing a high-quality data foundation for subsequent color analysis and grading.

[0027] A specific application of this embodiment is as follows: In use, depending on the size of the food, by rotating the handle 2111 clockwise, the handle 2111 drives the bidirectional threaded rod 212 to rotate. At this time, the bidirectional threaded rod 212 drives the ratchet 217 to rotate clockwise, thereby pressing the limit block 2110 to the right through the arc surface of the ratchet 217 against the arc surface of the limit block 2110, causing the limit block 2110 to move to the right. At this time, the limit block 2110 presses against the spring telescopic rod 219, causing deformation and generating elastic force, thereby causing the limit block 2110 to leave the restriction of the ratchet 217. The outer circumference of the ratchet (217) has multiple tooth grooves evenly distributed. The limit block (2110) is embedded in the tooth grooves by the elastic force of the spring telescopic rod 219, so that the bidirectional threaded rod 2110 moves to the right. The threaded rod 212 can rotate clockwise. When the ratchet 217 rotates to another groove, the spring force of the second spring telescopic rod 219 pushes the limiting block 2110 into the ratchet 217. The double-threaded rod 212 is rotated clockwise repeatedly, thereby driving the two moving plates 213 to slide on the slide rod 214 and move closer to each other. The parallel design of the double-threaded rod 212 and the slide rod 214 ensures that the two moving plates 213 move smoothly. At this time, the two moving plates 213 drive the guide plate 216 to move closer to each other through the two spring telescopic rods 215. When it is necessary to rotate the double-threaded rod 212 counterclockwise to drive the two moving plates 213 away from each other, the limiting block 2110 is pulled to the right to release the right angle of the limiting block 2110. Faced with the constraint of the right-angled surface of the ratchet 217, the double-sided threaded rod 212 is rotated counterclockwise to drive the two moving plates 213 away from each other. After the size is adjusted, the conveyor 1 is started, which moves the food to the image sensor 317. Under the action of several spring telescopic rods 215, the food is prevented from being too large and affecting the conveying of the food. The electric telescopic rod 316 is started to push the two double-sided hinge blocks 315 away from each other. At this time, the two double-sided hinge blocks 315 drive the corresponding two hinge rods 314 to move, so that several fixed blocks 313 rotate. At this time, the angle between the several hinge rods 314 increases, which drives the rectangular plate 312 to move downward along several fixed rods 311. In a parallel design, the rectangular plate 312 moves smoothly downwards. The rectangular plate 312 then moves the image sensor 317 downwards, adjusting its position. The image sensor 317 in this device is an AlliedVision Alvium G1 series sensor. Its working principle is as follows: photons are absorbed by a photodiode to generate a proportional charge, achieving light-to-electricity conversion. This is followed by analog-to-digital conversion to form a digital image. Its color correction matrix precisely adjusts the RGB values ​​of each pixel according to lighting conditions and preset parameters to ensure color reproduction. A custom bandpass filter, set via software to a specific wavelength range, enhances color information related to food color and suppresses interference. The "Region of Interest" function allows users to select a specific area.This allows the camera to focus its images on a specific area, thus enabling the inspection of the food ingredients.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A machine vision-based food material color grade positioning mechanism, characterized in that: Includes a conveyor (1), on which a guiding mechanism (2) and a height adjustment mechanism (3) are provided; The guiding mechanism (2) includes several rectangular supports (211) fixedly connected to the top of the conveyor (1). A bidirectional threaded rod (212) is rotatably connected between two rectangular supports (211) on the left side. The front side of the bidirectional threaded rod (212) passes through the rectangular support (211) on the left front side and extends outward. Two movable plates (213) are threadedly connected to the outer wall of the bidirectional threaded rod (212). The height adjustment mechanism (3) includes several fixed rods (311) fixedly connected to the top of the conveyor (1). A rectangular plate (312) is slidably connected to the outer wall of the several fixed rods (311).

2. The food color grading and positioning mechanism based on machine vision according to claim 1, characterized in that, A slide rod (214) is fixedly connected between the two rectangular supports (211) on the right side. The slide rod (214) passes through the two movable plates (213) and is slidably connected to the two movable plates (213).

3. The food color grading and positioning mechanism based on machine vision according to claim 2, characterized in that, Two spring telescopic rods (215) are fixedly connected to each other on the side of the two movable plates (213) that are close to each other, and two guide plates (216) are fixedly connected to the side of the several spring telescopic rods (215) that are close to each other.

4. The food color grading and positioning mechanism based on machine vision according to claim 3, characterized in that, The outer wall of the bidirectional threaded rod (212) is fixedly connected to a ratchet (217), and the outer wall of the rectangular bracket (211) located on the left front side is fixedly connected to a bracket (218).

5. The food color grading and positioning mechanism based on machine vision according to claim 4, characterized in that, A spring telescopic rod two (219) is fixedly connected to the left side of the bracket (218), and a limit block (2110) is fixedly connected to the left side of the spring telescopic rod two (219). A handle (2111) is fixedly connected to the outer wall of the bidirectional threaded rod (212).

6. The food color grading and positioning mechanism based on machine vision according to claim 5, characterized in that, The top of the conveyor (1) and the bottom of the rectangular plate (312) are both fixedly connected to a fixing block (313), and two hinge rods (314) are hinged on the two fixing blocks (313).

7. The food color grading and positioning mechanism based on machine vision according to claim 6, characterized in that, Two bidirectional hinge blocks (315) are hinged between several of the hinge rods (314), and an electric telescopic rod (316) is fixedly connected between the two bidirectional hinge blocks (315). An image sensor (317) is fixedly connected to the bottom of the rectangular plate (312).

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