Appearance defect continuous detection equipment for fruit quality sampling inspection

Abstract

The invention relates to the technical field of appearance defect continuous detection equipment for fruit quality sampling inspection, in particular to appearance defect continuous detection equipment for fruit quality sampling inspection, which comprises a detection table, a support frame is arranged in the middle of the top of the detection table, a first screw rod is arranged in the middle of the top of the support frame, and a first sliding block is slidably connected to the first screw rod; an electric push rod is arranged at the bottom of the first sliding block, a connecting plate is connected to the bottom of the electric push rod, a stepping motor is arranged on the outer side of the connecting plate, and a rotating shaft is inserted into the end of the stepping motor; the appearance defect continuous detection equipment for fruit quality sampling inspection has the beneficial effects that firstly, fruits needing to be detected are placed in a limiting clamping groove formed in the surface of a conveying belt one by one, clamping plates on the two sides of the limiting clamping groove start to clamp the fruits through the tension of springs, the fruits are prevented from rolling in the limiting clamping groove, and the detection accuracy is improved; and collision with the inner wall of the limiting clamping groove occurs.

Description

Technical Field

[0001] The invention relates to the technical field of continuous appearance defect detection equipment for random inspection of fruit quality, in particular to continuous appearance defect detection equipment for random inspection of fruit quality. Background Art

[0002] The appearance of fruit is crucial during harvesting, processing, and sales, influencing its market value and consumer purchasing intent. Traditional inspection for fruit appearance defects relies heavily on manual visual inspection, which is inefficient, subjective, and prone to missed detections, making it difficult to meet the demands of large-scale production and automated processing lines.

[0003] With the development of the times, in the field of fruit quality sampling, detection equipment based on optical imaging and image processing technology has emerged, providing a more advanced means for detecting fruit appearance defects. These devices can analyze the appearance of the fruit to a certain extent, obtain fruit surface images through imaging technology, and use image processing algorithms to process and analyze the images to identify defects on the fruit surface, such as spots, scars, uneven color, etc.

[0004] However, existing inspection equipment of this type has a prominent problem, that is, they cannot flip the fruit. Since the fruit cannot be flipped, the equipment can only obtain image information of the fruit from a single angle during inspection. This leads to incomplete inspection. The fruit may have appearance defects on the undetected side, which cannot be detected by existing equipment, thus affecting the accuracy and completeness of the inspection results. It is impossible to provide comprehensive and reliable appearance defect detection data for fruit quality inspections, and it is difficult to meet people's demand for strict control of fruit quality. Summary of the Invention

[0005] The object of the present invention is to provide a continuous appearance defect detection device for random inspection of fruit quality, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a testing platform, a support frame is provided in the top middle part of the testing platform, a first screw rod is provided in the top middle part of the support frame, a first sliding block is slidably connected to the first screw rod, an electric push rod is provided at the bottom of the first sliding block, the bottom of the electric push rod is connected to a connecting plate, a stepper motor is provided on the outside of the connecting plate, a rotating shaft is plugged into the end of the stepper motor, the rotating shaft is connected to the connecting block at the inner bottom end of the connecting plate, a slide groove is provided in the middle of the connecting block, a thumb cylinder is provided in the middle of the slide groove, push rods are plugged into both ends of the thumb cylinder, and the outer end of the push rod is connected to the splint.

[0007] Preferably, multiple groups of rollers are provided in the middle of the detection platform, and the roller sleeves are provided with conveyor belts. The outermost roller ends are inserted into the drive motor provided on one side of the detection platform. The drive motor can drive the rollers to rotate and transmit the conveyor belts.

[0008] Preferably, a screw motor is provided in the middle of the top of one side of the support frame, one end of the first screw is plugged into the top of the screw motor, and the screw motor can drive the first screw to rotate, so that the first sliding block on the first screw slides on the first screw.

[0009] Preferably, the first screw rod is connected to the first gear between the screw rod motor and the support frame, and the support frame is respectively provided with a second screw rod and a third screw rod on both sides of the first screw rod, the thread of the second screw rod is opposite to the thread of the first screw rod, and the thread of the third screw rod is the same as the thread of the first screw rod.

[0010] Preferably, one end of the second screw rod and the third screw rod extends from one side of the support frame, and the extended ends are respectively connected to a group of second gears. The second gears are parallel to the first gear on the first screw rod, located on both sides of the first gear, and tightly attached to the first gear. When the screw motor drives the first screw rod to rotate, it can drive the first gear to rotate and engage with the second gears on both sides, so that the two groups of second gears rotate in the opposite direction to the first gear.

[0011] Preferably, the second screw rod is slidably connected to the second sliding block, and the third screw rod is slidably connected to the third sliding block. Industrial cameras are provided at the bottom of the second sliding block and the third sliding block. The second sliding block and the third sliding block can slide on the second screw rod and the third screw rod to change the lateral position of the industrial camera connected to the bottom of the second sliding block and the third sliding block.

[0012] Preferably, the surface of the conveyor belt is provided with multiple groups of limit slots, and springs are provided on both sides of the limit slots, one end of the spring is connected to the inner wall of the limit slot, and the other end of the spring is connected to the clamping plate, and a first sponge pad is provided on the inner side of the clamping plate. The clamping plate can clamp the fruit through the elastic force of the spring, and limit plates are provided on the other two sides of the limit slot, which can prevent the clamping plate from detaching from the limit slot.

[0013] Preferably, the bottom of the first sliding block is fixedly connected to an electric push rod, which can drive the connecting plate to rise and fall, so that the clamping plates on both sides of the connecting block at the bottom of the connecting plate are inserted into the two sides of the limit slot where no clamping plates are set, and the push rod is driven to retract by the thumb cylinder to make the clamping plates clamp the fruit.

[0014] Preferably, a second sponge pad is provided on the inner surface of the clamping plate, and the second sponge pad can protect the clamped fruit and prevent the fruit from being injured.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention proposes a continuous appearance defect detection device for random inspection of fruit quality. First, the fruits to be inspected are placed one by one in the limit card slots set on the surface of the conveyor belt. The clamping plates on both sides of the limit card slot begin to clamp the fruits through the tension of the spring to prevent the fruits from rolling in the limit card slot and colliding with the inner wall of the limit card slot. A first sponge pad is set on the inner side of the clamping plate. The first sponge pad can protect the fruits and prevent the fruits from being pinched by the clamping plate. Then the driving motor drives the roller to drive the conveyor belt to start rotating. When the fruits reach the position where the industrial camera is set horizontally and parallel to the second sliding block, the industrial camera starts to take pictures of the fruits in the limit card slot perpendicular to the industrial camera and transmits the picture information to the terminal. The defect analysis of the fruit in the photo begins. At the same time, the electric push rod set at the bottom of the first sliding block starts to start the extension and retraction of the connecting plate, and inserts the clamping plate set on the inner side of the connecting plate into the two sides of the clamping plate where the limit slot is not set. The thumb cylinder drives the push rod to retract to clamp the fruit. The second sponge pad on the inside of the clamping plate prevents the fruit from being clamped. After that, the electric push rod drives the connecting plate to retract, and the stepper motor drives the connecting block to rotate through the rotating shaft to flip the fruit clamped by the clamping plate, replace the inspection surface of the fruit, and put the fruit into the limit slot again. The industrial camera at the bottom of the third sliding block starts to take pictures of the flipped fruit in the vertical limit slot at the bottom, and transmits the shooting information to the terminal for comprehensive inspection of the fruit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure at center A;

[0020] Figure 4 This is a schematic diagram of the top view of the support frame of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the first sliding block of the present invention.

[0022] In the figure: testing platform 1, drive motor 2, conveyor belt 3, limit slot 4, support frame 5, screw motor 6, first screw 7, second screw 8, third screw 9, first gear 10, second gear 11, first sliding block 12, second sliding block 13, third sliding block 14, spring 15, clamping plate 16, first sponge pad 17, limit plate 18, industrial camera 19, electric push rod 20, connecting plate 21, connecting block 22, slide 23, thumb cylinder 24, push rod 25, splint 26, second sponge pad 27, stepping motor 28. DETAILED DESCRIPTION

[0023] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 5The present invention provides a technical solution: a testing platform 1, a support frame 5 is provided in the middle of the top of the testing platform 1, a first screw rod 7 is provided in the middle of the top of the support frame 5, a first sliding block 12 is slidably connected to the first screw rod 7, an electric push rod 20 is provided at the bottom of the first sliding block 12, the bottom of the electric push rod 20 is connected to the connecting plate 21, a stepping motor 28 is provided on the outside of the connecting plate 21, a rotating shaft is plugged into the end of the stepping motor 28, and the rotating shaft is connected to the connecting block 22 at the inner bottom end of the connecting plate 21, a slide groove 23 is provided in the middle of the connecting block 22, a thumb cylinder 24 is provided in the middle of the slide groove 23, push rods 25 are plugged into both ends of the thumb cylinder 24, and the outer end of the push rod 25 is connected to the splint 26; testing A plurality of rollers are provided in the middle of the platform 1, and the roller sleeves are provided with conveyor belts 3. The outermost roller ends are inserted into the drive motor 2 provided on one side of the detection platform 1, and the drive motor 2 can drive the rollers to rotate, so that the conveyor belt 3 is transmitted; a screw motor 6 is provided in the middle of the top of one side of the support frame 5, and one end of the first screw rod 7 is inserted into the top of the screw motor 6. The screw motor 6 can drive the first screw rod 7 to rotate, so that the first sliding block 12 on the first screw rod 7 slides on the first screw rod 7; the first screw rod 7 is connected to the first gear 10 between the screw motor 6 and the support frame 5, and the support frame 5 is respectively provided with a second screw rod 8 and a third screw rod 9 on both sides of the first screw rod 7, and the thread of the second screw rod 8 is aligned with the thread of the first screw rod 7 On the contrary, the thread of the third screw rod 9 is the same as the thread of the first screw rod 7; one end of the second screw rod 8 and the third screw rod 9 extends from one side of the support frame 5, and the extended end is respectively connected to a group of second gears 11, and the second gear 11 is parallel to the first gear 10 on the first screw rod 7, is located on both sides of the first gear 10, and is close to the first gear 10. When the screw motor 6 drives the first screw rod 7 to rotate, it can drive the first gear 10 to rotate and engage with the second gears 11 on both sides, so that the two groups of second gears 11 and the first gear 10 rotate in the opposite direction; the second screw rod 8 is slidably connected to the second sliding block 13, and the third screw rod 9 is slidably connected to the third sliding block 14, and the bottoms of the second sliding block 13 and the third sliding block 14 are the same An industrial camera 19 is provided, and the second sliding block 13 and the third sliding block 14 can slide on the second screw rod 8 and the third screw rod 9 to change the lateral position of the industrial camera 19 connected to the bottom of the second sliding block 13 and the third sliding block 14; the surface of the conveyor belt 3 is provided with multiple groups of limit slots 4, and springs 15 are provided on both sides of the limit slots 4. One end of the spring 15 is connected to the inner wall of the limit slot 4, and the other end of the spring 15 is connected to the clamping plate 16. A first sponge pad 17 is provided on the inner side of the clamping plate 16. The clamping plate 16 can clamp the fruit by the elastic force of the spring 15. Limiting plates 18 are provided on the other two sides of the limit slot 4. The limiting plates 18 can prevent the clamping plate 16 from detaching from the limit slot 4;The bottom of the first sliding block 12 is fixedly connected to an electric push rod 20, which drives the connecting plate 21 up and down, causing the clamping plates 26 on both sides of the connecting block 22 at the bottom of the connecting plate 21 to be inserted into the sides of the limit slot 4 where the clamping plates 16 are not located. The thumb cylinder 24 then drives the push rod 25 to retract, causing the clamping plates 26 to clamp the fruit. The inner surface of the clamping plates 26 is provided with a second sponge pad 27, which protects the clamped fruit and prevents it from being injured.

[0025] During actual use, the fruits to be inspected are first placed one by one in the limit slots 4 set on the surface of the conveyor belt 3. The clamping plates 16 on both sides of the limit slots 4 begin to clamp the fruits through the tension of the springs 15 to prevent the fruits from rolling in the limit slots 4 and colliding with the inner wall of the limit slots 4. A first sponge pad 17 is provided on the inner side of the clamping plate 16. The first sponge pad 17 can protect the fruits and prevent the fruits from being pinched by the clamping plate 16. Then the driving motor 2 drives the roller to drive the conveyor belt 3 to start rotating. When the fruits reach the position where the industrial camera 19 is set horizontally and parallel to the second sliding block 13, the industrial camera 19 starts to inspect the fruits in the limit slots 4 perpendicular to the industrial camera 19. Take a picture and transmit the picture information to the terminal. The terminal starts to analyze the defects of the fruit in the picture. At the same time, the electric push rod 20 provided at the bottom of the first sliding block 12 starts to start the extension and contraction of the connecting plate 21, and the clamping plate 16 provided on the inner side of the connecting plate 21 is plugged into the two sides of the clamping plate 16 not provided in the limit card slot 4. The thumb cylinder 24 drives the push rod 25 to contract to clamp the fruit. The second sponge pad 27 on the inner side of the clamping plate 26 prevents the fruit from being pinched. After that, the electric push rod 20 drives the connecting plate 21 to contract, and the stepper motor 28 drives the connecting block 22 to rotate through the rotating shaft, flips the fruit clamped by the clamping plate 26, replaces the detection surface of the fruit, and then puts the fruit into the limit card slot 4 again. , and the industrial camera 19 at the bottom of the third sliding block 14 starts to take pictures of the fruit flipped in the vertical limit slot 4 at the bottom, and transmits the shooting information to the terminal to conduct a comprehensive inspection of the fruit; then the screw motor 6 drives the first screw rod 7 to rotate, so that the first sliding block 12 on the first screw rod 7 starts to slide on the first screw rod 7, and the first screw rod 7 drives the first gear 10 connected to the outside of the first screw rod 7 to rotate synchronously while rotating, so that the first gear 10 is engaged with the second gears 11 on both sides, driving the second gear 11 to rotate in the opposite direction of the first gear 10, and the second gear 11 drives the second screw rod 8 and the third screw rod 9 to rotate synchronously by rotating. Because the thread of the second screw rod 8 is connected to the first screw rod 8, the screw rod 8 is connected to the first screw rod 8. The threads of the rod 7 are opposite. At this time, the second sliding block 13 on the second screw rod 8 slides synchronously with the first sliding block 12, and the third screw rod 9 has the same thread as the first screw rod 7. The third screw rod 9 drives the third sliding block 14 to slide in the opposite direction of the first sliding block 12. At this time, the second sliding block 13 drives the industrial camera 19 at the bottom to detect the fruits in another set of horizontally parallel limit slots 4, and the electric push rod 20 at the bottom of the third sliding block 14 drives the splint 26 on the inner side of the connecting block 22 at the bottom of the electric push rod 20 to flip the fruits in the other set of horizontally parallel limit slots 4. The industrial camera 19 at the bottom of the second sliding block 13 slides to synchronously change the fruits to be irradiated and inspected.

[0026] Although the above describes the illustrative specific implementation methods of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific implementation methods. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. A continuous appearance defect detection device for fruit quality sampling, characterized by: include: The testing platform (1) is provided with a support frame (5) at the top middle part of the testing platform (1), a first screw rod (7) is provided at the top middle part of the support frame (5), a first sliding block (12) is slidably connected to the first screw rod (7), an electric push rod (20) is provided at the bottom of the first sliding block (12), the bottom of the electric push rod (20) is connected to the connecting plate (21), a stepping motor (28) is provided on the outside of the connecting plate (21), a rotating shaft is plugged into the end of the stepping motor (28), and the rotating shaft is connected to the connecting block (22) at the inner bottom end of the connecting plate (21), a sliding groove (23) is provided in the middle part of the connecting block (22), a thumb cylinder (24) is provided in the middle part of the sliding groove (23), push rods (25) are plugged into the two ends of the thumb cylinder (24), and the outer end of the push rod (25) is connected to the splint (26).

2. The continuous appearance defect detection device for fruit quality sampling according to claim 1, characterized in that: A plurality of rollers are provided in the middle of the detection platform (1), and the roller sleeves are provided with a conveyor belt (3). The outermost roller ends are plugged into a drive motor (2) provided on one side of the detection platform (1). The drive motor (2) can drive the rollers to rotate, thereby transmitting the conveyor belt (3).

3. The continuous detection device for appearance defects of fruits for random inspection according to claim 2, characterized in that: A screw motor (6) is provided at the middle of the top of one side of the support frame (5), and one end of the first screw rod (7) is plugged into the top of the screw motor (6). The screw motor (6) can drive the first screw rod (7) to rotate, so that the first sliding block (12) on the first screw rod (7) slides on the first screw rod (7).

4. The continuous detection device for appearance defects of fruits for random inspection according to claim 3, characterized in that: The first screw rod (7) is connected to the first gear (10) between the screw motor (6) and the support frame (5); the support frame (5) is provided with a second screw rod (8) and a third screw rod (9) on both sides of the first screw rod (7), respectively; the thread of the second screw rod (8) is opposite to the thread of the first screw rod (7), and the thread of the third screw rod (9) is the same as the thread of the first screw rod (7).

5. The continuous detection device for appearance defects of fruits for random inspection according to claim 4, characterized in that: One end of the second screw rod (8) and the third screw rod (9) extends from one side of the support frame (5), and the extended ends are respectively connected to a group of second gears (11). The second gears (11) are parallel to the first gear (10) on the first screw rod (7), are located on both sides of the first gear (10), and are tightly attached to the first gear (10). When the screw motor (6) drives the first screw rod (7) to rotate, it can drive the first gear (10) to rotate and engage with the second gears (11) on both sides, so that the two groups of second gears (11) rotate in the opposite direction to the first gear (10).

6. The continuous detection device for appearance defects of fruits for random inspection according to claim 5, characterized in that: The second screw rod (8) is slidably connected to the second sliding block (13), and the third screw rod (9) is slidably connected to the third sliding block (14). An industrial camera (19) is provided at the bottom of the second sliding block (13) and the third sliding block (14). The second sliding block (13) and the third sliding block (14) can slide on the second screw rod (8) and the third screw rod (9) to change the lateral position of the industrial camera (19) connected to the bottom of the second sliding block (13) and the third sliding block (14).

7. The continuous detection device for appearance defects of fruits for random inspection according to claim 6, characterized in that: The surface of the conveyor belt (3) is provided with a plurality of groups of limiting slots (4), and springs (15) are provided on both sides of the limiting slots (4). One end of the spring (15) is connected to the inner wall of the limiting slot (4), and the other end of the spring (15) is connected to the clamping plate (16). A first sponge pad (17) is provided on the inner side of the clamping plate (16). The clamping plate (16) can clamp the fruit by the elastic force of the spring (15). The other two sides of the limiting slot (4) are provided with limiting plates (18), and the limiting plates (18) can prevent the clamping plate (16) from detaching from the limiting slot (4).

8. The continuous appearance defect detection device for random inspection of fruit quality according to claim 7, characterized in that: The bottom of the first sliding block (12) is fixedly connected to an electric push rod (20), which can drive the connecting plate (21) to rise and fall, so that the clamping plates (26) on both sides of the connecting block (22) at the bottom of the connecting plate (21) are plugged into the two sides of the limiting slot (4) where the clamping plates (16) are not provided, and the push rod (25) is driven to retract through the thumb cylinder (24), so that the clamping plates (26) clamp the fruit.

9. The continuous detection device for appearance defects of fruits for random inspection according to claim 8, characterized in that: The inner surface of the clamping plate (26) is provided with a second sponge pad (27), and the second sponge pad (27) can protect the clamped fruit and prevent the fruit from being injured.

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