A fruit and vegetable appearance detection device

Abstract

The present invention relates to the field of fruit and vegetable detection technology, and specifically to a fruit and vegetable appearance detection device, including a frame, a fruit pressing mechanism, a leaf scooping mechanism, a water absorbing mechanism and a fruit screening mechanism, wherein the top outer wall of the frame is fixedly connected to a fruit stacking box, the inner wall of the frame on the side away from the fruit stacking box is fixedly connected to a detection box, and the outer wall of a conveyor belt is fixedly connected to a water leakage limit plate. The present invention arranges a fruit pressing mechanism in the water leakage limit plate, and when a slide bar slides to two protrusions of a limit slide rail, the limit bar moves up several times and then falls, so that the surface of the fruit and vegetable impacts the water flow, better promotes the shedding of impurities, and at the same time cooperates with the leaf scooping mechanism to synchronously scoop out impurities such as leaves floating on the water surface, and when the slide bar moves to the wave of the limit slide rail, the fruit and vegetable are inverted to control the water and shake the fruit and vegetable, so that only a small amount of water remains on the surface of the fruit and vegetable, so as to solve the problem that impurities such as leaves adhering to the surface of the fruit and vegetable affect the judgment of the image processing system, and the number of detections is greatly increased.

Description

Technical Field

[0001] The present invention relates to the technical field of fruit and vegetable detection, and in particular to a fruit and vegetable appearance detection device. Background Art

[0002] Fruit and vegetable surface defect detection equipment is a device that uses computer vision technology to detect and classify the surface of fruits and vegetables. The equipment is usually composed of an image acquisition system, an image processing system, a classification system, etc. Through the image acquisition system, the image of the fruit and vegetable surface is transmitted to the computer. After being processed by the image processing system, the defects on the fruit and vegetable surface are analyzed and classified, and judged and screened through the classification system.

[0003] The patent with authorization announcement number CN116893137B discloses an automatic detection equipment for apple surface defects, including a supporting frame, a rotating column and a transmission belt. The rotating column is rotatably connected to the inner wall of the supporting frame, the transmission belt is sleeved on the outer wall of the rotating column, one end of the rotating column is rotatably connected to a rotating motor, the top of the supporting frame is fixedly connected to a detection box, the inner wall of the detection box is fixedly connected to an industrial color camera, the outer wall of the rotating column is fixedly connected to an external rotating column, the outer wall of the external rotating column is fixedly connected to a semicircular gear, and the outer wall of the semicircular gear is meshed with a movable gear ring.

[0004] However, the above-mentioned automatic detection equipment for apple surface defects still has some shortcomings in actual use: 1. The piston push plate is squeezed by the rotating motor to squeeze the water in the water tank, and the water flows to the drain pipe to spray the apples to rinse the apples, so as to solve the problem that impurities such as leaves adhering to the surface of apples affect the judgment of the image processing system. However, the movement of the piston push plate is reciprocating, that is, the cleaning of the apples is intermittent, and the leaves are not processed, so that the leaves and impurities still remain on the transmission belt, affecting subsequent detection; 2. The rinsed apples are dried in a dryer. Due to the nature of apples, drying will cause the apples to lose a certain amount of moisture; 3. The setting of the above-mentioned automatic detection equipment for apple surface defects can only detect single-row apples, the detection efficiency is extremely low, and the cleaning effect is not good, so a fruit and vegetable appearance detection equipment is proposed to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose a fruit and vegetable appearance detection device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A fruit and vegetable appearance detection device comprises a frame, wherein the top outer wall of the frame is fixedly connected to a fruit stacking box, the inner wall of the frame is fixedly connected to a water tank, the outer wall of the frame is fixedly connected to a spray assembly, both inner walls of the frame are provided with limit slide rails, the inner wall of the frame away from the fruit stacking box is fixedly connected to a detection box, the outer wall of the frame is fixedly connected to a conveying motor, the inner wall of the frame is rotatably connected to two conveying shafts, one of which is fixedly connected to an output shaft of the conveying motor, the outer walls of the two conveying shafts are sleeved with the same conveying belt, the outer wall of the conveying belt is fixedly connected to a water leakage limit plate, and further comprises:

[0008] The fruit pressing mechanism is used to prevent the fruits and vegetables from floating on the water surface and falling off the conveyor belt when the fruits and vegetables enter the water tank. At the same time, the fruit pressing mechanism cooperates with the limiting slide rail to allow the fruits and vegetables to impact up and down multiple times in the water tank, so as to better remove impurities on the surface of the fruits and vegetables. When the fruit pressing mechanism moves downward with the conveyor belt, it controls the water of the fruits and vegetables while preventing the fruits and vegetables from falling. The fruit pressing mechanism is installed on the water leakage limiting plate;

[0009] The leaf scooping mechanism is used to cooperate with the sliding of the fruit pressing mechanism to scoop out large impurities such as leaves to avoid adhesion to the surface of fruits and vegetables and affecting subsequent detection and imaging. The leaf scooping mechanism is installed on the frame;

[0010] A water absorption mechanism, used to absorb water from the surface of the fruits and vegetables after washing, and the water absorption mechanism is installed in the frame;

[0011] And a fruit screening mechanism, which is used to cooperate with the detection box to screen out unqualified fruits and vegetables, and the fruit screening mechanism is installed on the detection box.

[0012] Preferably, an inclined water guide plate is provided below the other conveying shaft rod, the inclined water guide plate is fixedly connected to the inner wall of the frame, a drain outlet is provided on the outer wall of the frame, the drain outlet is communicated with the end of the inclined water guide plate, a detection motor is provided below the inclined water guide plate, the detection motor is fixedly connected to the outer wall of the frame, the inner wall of the frame is rotatably connected to two first shaft rods, the outer walls of the two first shaft rods are sleeved with the same detection belt, and the outer wall of the water tank is fixedly connected to a water outlet.

[0013] Preferably, the leaf scooping mechanism includes a mounting frame, a transmission shaft, a first gear, a third rack, a fixed plate, a connecting rod, three springs and five leaf scooping nets, the five leaf scooping nets are all rotatably connected to the mounting frame, the mounting frame is fixedly connected to the transmission shaft, the transmission shaft is rotatably connected to the frame body, the first gear is fixedly connected to the transmission shaft, the third rack is slidably connected to the frame body through a sliding groove and a sliding block, the connecting rod is fixedly connected to the third rack, the fixed plate is fixedly connected to the frame body, and the three springs are fixedly connected between the connecting rod and the fixed plate.

[0014] Preferably, the leaf-lifting mechanism also includes a chain 1, an arcuate rack, a fixed plate 2, a rotating gear 2, a first bevel gear and five transmission gears 1. The five transmission gears 1 are fixedly connected to the five leaf-lifting nets through arranged shaft rods. The outer walls of the five transmission gears 1 are sleeved with the same chain 1. The outer wall of one transmission gear 1 is fixedly connected to the first bevel gear, the outer wall of the first bevel gear is meshed with the second bevel gear, the outer wall of the second bevel gear is fixedly connected to the rotating gear 2, the outer wall of the rotating gear 2 is fixedly connected to the fixed plate 2, the outer wall of the fixed plate 2 is fixedly connected to the mounting frame 1, and the outer wall of the arcuate rack is fixedly connected to the frame body.

[0015] Preferably, two leaf-catching mechanisms are provided, and the two leaf-catching mechanisms are symmetrically distributed. The fruit-picking mechanism comprises a second chain, a second connecting rod, two first slide rods, a plurality of second slide rods, a plurality of limit rods, a plurality of second chains and a plurality of first springs. The two first slide rods are slidably connected to the frame body through the limit slide rails on both sides, the second connecting rod is fixedly connected to the two first slide rods, the outer wall of the second connecting rod is slidably connected to the water leakage limit plate, the plurality of second slide rods are rotatably connected to the second connecting rod, the plurality of limit rods are respectively fixedly connected to the plurality of second slide rods, the plurality of second slide rods are respectively slidably connected to the plurality of second transmission gears through the arranged slide grooves and sliders, the plurality of second chains are respectively rotatably connected to the water leakage limit plate, and the outer walls of the plurality of second transmission gears are movably connected to the second chain.

[0016] Preferably, the water leakage limiting plates are provided with several, the water absorption mechanism comprises a water absorption belt, a water absorption sponge sleeve, an extrusion shaft rod, a third shaft rod and two second shaft rods, the two second shaft rods are rotatably connected to the inner wall of the frame, the water absorption belt sleeve is arranged on the outer walls of the two second shaft rods, the water absorption sponge sleeve is fixedly connected to the water absorption belt, the third shaft rod is fixedly connected to one of the second shaft rods, the extrusion shaft rod is fixedly connected to the frame, the water absorption sponge sleeve is located between the water absorption belt and the extrusion shaft rod, the outer wall of the third shaft rod is fixedly connected to a mounting plate, the inner wall of the mounting plate is rotatably connected to a support rod, a torsion spring is fixedly connected between the support rod and the mounting plate, and the mounting plate is provided with several.

[0017] Preferably, a first rack is fixedly connected to the inner wall of the frame, and the first rack is located obliquely above the leaf scooping net. A second rack is fixedly connected to the inner wall of the frame, and the second rack is located above the water-absorbing sponge cover. A limit frame is arranged above the detection belt, and the limit frame is fixedly connected to the frame. An inclined slide groove is fixedly connected to the inner wall of one end of the frame close to the detection motor.

[0018] Preferably, the fruit screening mechanism comprises a rejecting motor and a screening plate, the rejecting motor is fixedly connected to the outer wall of the detection box, and the screening plate is fixedly connected to the output shaft of the rejecting motor.

[0019] Compared with the existing technology, the advantages of this fruit and vegetable appearance detection equipment are:

[0020] When the conveyor belt and the water leakage limit plate carry rows of fruits and vegetables into the water tank, impurities such as leaves will float on the water surface due to the buoyancy of the water. Since the fruits and vegetables are limited by the limit rods, they will be completely immersed in the water. When the slide bar 1 slides to the two protrusions of the limit rail, the slide bar 1 drives all the limit rods to move up and then fall down through the connecting rod 2 and the slide bar 2, so that the fruits and vegetables float up and are pressed down by the limit rods, so that the surface of the fruits and vegetables impacts the water flow, which better promotes the shedding of impurities.

[0021] At the same time, when the slide bar 1 moves up, the slide bar 1 will squeeze the connecting rod 1, so that the connecting rod 1 drives the third rack to move up, thereby driving the first gear to rotate 180 degrees. Since the spray assembly is arranged on one side of the water tank, the water will flow from the spray assembly to the leaf scooping net, so that the impurities floating on the water surface will accumulate on the side of the water tank away from the spray assembly. In the default state, the leaf scooping net is submerged in the water in a vertical state. When the first gear drives the transmission shaft and the mounting frame 1 to flip, the fixing plate 2 is meshed with the arc-shaped rack, and the transmission gear 1 and the leaf scooping net are driven to flip 90 degrees through the second bevel gear and the first bevel gear, so that the five leaf scooping nets form a plane to scoop out the impurities, leaves, etc. floating on the water surface;

[0022] When the slide bar moves to the wave position of the limit slide rail, the fruits and vegetables are in an inverted state, and the water control step is performed on the fruits and vegetables. When passing through the wave range, the water is shaken out, so that only a small amount of water remains on the surface of the fruits and vegetables;

[0023] When fruits and vegetables fall on the water-absorbing sponge cover, the water leakage limit plate will collide with the support rod. The part of the corner of the mounting plate connected to the support rod is complete on one side to provide support for the support rod to collide with the water leakage limit plate, and missing on one side. When the support rod contacts the water-absorbing sponge cover and the water-absorbing belt, it can rotate, and the second shaft rod is driven to rotate through the mounting plate and the third shaft rod, thereby driving the water-absorbing sponge cover to move. When fruits and vegetables roll down along the inclined surface of the water-absorbing sponge cover, the contact time between fruits and vegetables and the water-absorbing sponge cover can be extended.

[0024] In summary, the present invention arranges a fruit pressing mechanism in the leakage limit plate. When the slide rod slides to the two protrusions of the limit slide rail, the limit rod moves up several times and then falls down, so that the surface of the fruits and vegetables impacts the water flow, which better promotes the shedding of impurities. At the same time, the leaf scooping mechanism is cooperated to synchronously scoop out impurities such as leaves floating on the water surface. When the slide rod moves to the wave position of the limit slide rail, the fruits and vegetables are inverted and the water is controlled and shaken, so that only a small amount of water remains on the surface of the fruits and vegetables, thereby solving the problem that impurities such as leaves adhering to the surface of fruits and vegetables affect the judgment of the image processing system, and the number of detections is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention after removing part of the frame;

[0027] Figure 3 The present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0028] Figure 4 The present invention Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0029] Figure 5 It is a schematic diagram of the planar structure of the present invention after removing part of the frame;

[0030] Figure 6 The present invention Figure 5 A schematic diagram of the partially enlarged structure at C in the middle;

[0031] Figure 7 The present invention Figure 5 The schematic diagram of the local enlarged structure at D in the middle;

[0032] Figure 8 It is a schematic diagram of the structure inside the water leakage limiting plate of the present invention;

[0033] Fig. 9 The present invention Figure 8 The schematic diagram of the local enlarged structure at E in the middle;

[0034] Fig.10 The present invention Fig. 9 The schematic diagram of the partial enlarged structure at F in the middle;

[0035] Fig.11 It is a structural schematic diagram of the water absorption mechanism of the present invention;

[0036] Fig.12 The present invention Fig.11 A schematic diagram of the local enlarged structure at G in the middle;

[0037] Fig.13 The present invention Fig.12 A schematic diagram of the partially enlarged structure at J in the middle;

[0038] Fig.14 The present invention Fig.11 Schematic diagram of the local enlarged structure at H in the middle.

[0039] In the figure: 1, frame; 2, fruit stacking box; 3, leaf scooping net; 4, spray assembly; 5, detection box; 6, inclined slide; 7, detection motor; 8, drain outlet; 9, water outlet; 10, conveying motor; 11, conveying belt; 12, inclined water guide plate; 13, first shaft rod; 14, water absorption belt; 15, water absorption sponge sleeve; 16, extrusion shaft rod; 17, limit frame; 18, detection belt; 19, first rack; 20, mounting frame 1; 21, transmission shaft rod; 22, first gear; 23, third rack; 24, fixing plate 1; 25, spring 1; 26, connecting rod 1; 27, limit slide rail; 28, screening plate; 29 , water tank; 30, second shaft rod; 31, second rack; 32, water leakage limit plate; 33, chain one; 34, transmission gear one; 35, transmission gear two; 36, slide bar one; 37, connecting rod two; 38, slide bar two; 39, limit rod; 40, first bevel gear; 41, second bevel gear; 42, rotating gear two; 43, arc rack; 44, fixing plate two; 45, mounting plate; 46, support rod; 47, third shaft rod; 48, torsion spring; 49, conveying shaft rod; 50, chain two; 51, rejection motor; 101, leaf scooping mechanism; 202, fruit pressing mechanism; 303, water absorption mechanism; 404, fruit screening mechanism. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0042] Reference Figure 1 - Fig.14A fruit and vegetable appearance detection device comprises a frame 1, a fruit stacking box 2 is fixedly connected to the top outer wall of the frame 1, a water tank 29 is fixedly connected to the inner wall of the frame 1, a spray assembly 4 is fixedly connected to the outer wall of the frame 1, and limiting slide rails 27 are provided on both inner walls of the frame 1, and a detection box 5 is fixedly connected to the inner wall of the frame 1 on the side away from the fruit stacking box 2, and the outer wall of the frame 1 is fixedly connected to a conveying motor 10, and the inner wall of the frame 1 is rotatably connected to two conveying shafts 49, one of which is fixedly connected to the output shaft of the conveying motor 10, and the outer walls of the two conveying shafts 49 are sleeved with the same conveying belt 11, and the outer wall of the conveying belt 11 is fixedly connected to a water leakage limit plate 32, and also includes: a fruit pressing mechanism 202, which is used to prevent fruits and vegetables from floating on the water surface and detaching from the conveying belt when fruits and vegetables enter the water tank 29. 11, and the fruit pressing mechanism 202 cooperates with the limiting slide rail 27 to make the fruits and vegetables impact up and down multiple times in the water tank 29, so as to better remove impurities on the surface of the fruits and vegetables. When the fruit pressing mechanism 202 moves downward with the conveyor belt 11, it controls the water of the fruits and vegetables while preventing the fruits and vegetables from falling. The fruit pressing mechanism 202 is installed on the water leakage limiting plate 32; the leaf scooping mechanism 101 is used to cooperate with the sliding of the fruit pressing mechanism 202 to scoop out large impurities such as leaves to avoid adhesion on the surface of fruits and vegetables to affect subsequent detection and imaging. The leaf scooping mechanism 101 is installed on the frame 1; the water absorption mechanism 303 is used to absorb the moisture on the surface of the fruits and vegetables after washing, and the water absorption mechanism 303 is installed in the frame 1; and the fruit screening mechanism 404 is used to cooperate with the detection box 5 to screen out unqualified fruits and vegetables, and the fruit screening mechanism 404 is installed on the detection box 5.

[0043] Among them, an inclined water guide plate 12 is arranged below the other conveying shaft rod 49, and the inclined water guide plate 12 is fixedly connected to the inner wall of the frame 1. A drain outlet 8 is opened on the outer wall of the frame 1, and the drain outlet 8 is connected to the end of the inclined water guide plate 12. A detection motor 7 is arranged below the inclined water guide plate 12, and the detection motor 7 is fixedly connected to the outer wall of the frame 1. The inner wall of the frame 1 is rotatably connected to two first shaft rods 13, and the outer walls of the two first shaft rods 13 are provided with the same detection belt 18, and the outer wall of the water tank 29 is fixedly connected to the water outlet 9.

[0044] In this embodiment, the conveying motor 10 and the detection motor 7 are started, driving the conveying belt 11 and the detection belt 18 to convey fruits and vegetables. Taking spherical fruits and vegetables of similar size such as apples and pears as an example, the water level in the water tank 29 is higher than the leaf scooping net 3, and the spray component 4 continuously sprays to clean the fruits and vegetables, and the water is discharged through the valve on the water outlet 9 to maintain a constant amount of water in the water tank 29.

[0045] Among them, the leaf scooping mechanism 101 includes a mounting frame 20, a transmission shaft 21, a first gear 22, a third rack 23, a fixed plate 24, a connecting rod 26, three springs 25 and five leaf scooping nets 3. The five leaf scooping nets 3 are all rotatably connected to the mounting frame 20, the mounting frame 20 is fixedly connected to the transmission shaft 21, the transmission shaft 21 is rotatably connected to the frame body 1, the first gear 22 is fixedly connected to the transmission shaft 21, the third rack 23 is slidably connected to the frame body 1 through a set slide groove and a slider, the connecting rod 26 is fixedly connected to the third rack 23, the fixed plate 24 is fixedly connected to the frame body 1, and the three springs 25 are fixedly connected between the connecting rod 26 and the fixed plate 24.

[0046] Among them, the leaf scooping mechanism 101 also includes a chain 33, an arcuate rack 43, a fixed plate 2 44, a rotating gear 2 42, a first bevel gear 40 and five transmission gears 34. The five transmission gears 34 are fixedly connected to the five leaf scooping nets 3 through the set shaft rods. The outer walls of the five transmission gears 34 are sleeved with the same chain 33. The outer wall of one transmission gear 34 is fixedly connected to the first bevel gear 40, the outer wall of the first bevel gear 40 is meshed with the second bevel gear 41, the outer wall of the second bevel gear 41 is fixedly connected to the rotating gear 2 42, the outer wall of the rotating gear 2 42 is fixedly connected to the fixed plate 2 44, the outer wall of the fixed plate 2 44 is fixedly connected to the mounting frame 20, and the outer wall of the arcuate rack 43 is fixedly connected to the frame body 1.

[0047] Among them, two leaf catching mechanisms 101 are provided, and the two leaf catching mechanisms 101 are symmetrically distributed. The fruit mechanism 202 includes a chain 250, a connecting rod 237, two sliding rods 36, a plurality of sliding rods 38, a plurality of limiting rods 39, a plurality of chains 250 and a plurality of springs 25. The two sliding rods 36 are slidably connected to the frame 1 through the limiting slide rails 27 on both sides. The connecting rod 237 is fixedly connected to the two sliding rods 36. The outer wall of the connecting rod 237 is slidably connected to the water leakage limiting plate 32. The plurality of sliding rods 38 are rotatably connected to the connecting rod 237. The plurality of limiting rods 39 are respectively fixedly connected to the plurality of sliding rods 38. The plurality of sliding rods 38 are respectively slidably connected to the plurality of transmission gears 235 through the provided sliding grooves and sliding blocks. The plurality of chains 250 are respectively rotatably connected to the water leakage limiting plate 32. The outer walls of the plurality of transmission gears 235 are movably connected to the chain 250.

[0048] In the present embodiment, fruits and vegetables are piled up in the fruit stacking box 2, and the gap between the fruit stacking box 2 and the conveyor belt 11 is set to convey only one row of fruits and vegetables. There is one row of fruits and vegetables between the two water leakage limit plates 32. When the transmission gear 2 35 on the outermost side of the water leakage limit plate 32 is meshed with the first rack 19, it is set that the first rack 19 can drive the transmission gear 2 35 to rotate ninety degrees, so that the transmission gear 2 35 drives the limit rod 39 to rotate ninety degrees. The limit rod 39 is just located between the two water leakage limit plates 32, and the gap between two adjacent limit rods 39 will not exceed the diameter of the fruits and vegetables. When the conveyor belt 11 and the water leakage limit plate 32 carry rows of fruits and vegetables into the water tank 29, impurities such as leaves will float on the water surface due to the buoyancy of the water. Since the fruits and vegetables are limited by the limit rod 39, the fruits and vegetables will be completely immersed in the water. When the slide bar 1 36 slides to the position as shown in the figure, the fruit and vegetables will be completely immersed in the water. Figure 6 When the two protrusions of the limit rail 27 are shown, the slide bar 1 36 drives all the limit bars 39 to move up and then fall down through the connecting rod 2 37 and the slide bar 38, so that the fruits and vegetables float up and are then pressed down by the limit bars 39, so that the surface of the fruits and vegetables impacts the water flow, which better promotes the shedding of impurities. The limit bars 39 are set to move up to a height that will not cause the fruits and vegetables to fall out of the water leakage limit plate 32;

[0049] At the same time, when the slide bar 36 moves up, the slide bar 36 will squeeze the connecting rod 26, so that the connecting rod 26 drives the third rack 23 to move up, thereby driving the first gear 22 to rotate 180 degrees. Since the spray assembly 4 is arranged above one side of the water tank 29, the water flow will flow from the spray assembly 4 to the leaf scooping net 3, so that the impurities floating on the water surface will accumulate on the side of the water tank 29 away from the spray assembly 4. In the default state, the leaf scooping net 3 is submerged in the water in a vertical state. When the first gear 22 drives the transmission shaft 21 and the mounting frame 20 to flip, the fixing plate 24 engages with the arc-shaped rack 43, and drives the transmission gear 34 and the leaf scooping net 3 to flip 90 degrees through the second bevel gear 41 and the first bevel gear 40, so that the five leaf scooping nets 3 form a plane to scoop out the impurities, leaves, etc. floating on the water surface. The gap between the two water leakage limit plates 32 is set to be larger than Figure 6 The lengths of both ends of the two protrusions of the limiting slide rail 27 are shown.

[0050] Among them, there are several water leakage limiting plates 32, and the water absorption mechanism 303 includes a water absorption belt 14, a water absorption sponge cover 15, an extrusion shaft rod 16, a third shaft rod 47 and two second shaft rods 30, the two second shaft rods 30 are rotatably connected to the inner wall of the frame 1, the water absorption belt 14 is sleeved on the outer walls of the two second shaft rods 30, the water absorption sponge cover 15 is fixedly connected to the water absorption belt 14, the third shaft rod 47 is fixedly connected to one of the second shaft rods 30, the extrusion shaft rod 16 is fixedly connected to the frame 1, the water absorption sponge cover 15 is located between the water absorption belt 14 and the extrusion shaft rod 16, the outer wall of the third shaft rod 47 is fixedly connected to the mounting plate 45, the inner wall of the mounting plate 45 is rotatably connected to the support rod 46, a torsion spring 48 is fixedly connected between the support rod 46 and the mounting plate 45, and several mounting plates 45 are provided.

[0051] In this embodiment, when the slide bar 36 moves to Figure 7 When the limiting slide rail 27 is at the wave position as shown, the fruits and vegetables are in an inverted state, and the water control step is performed on the fruits and vegetables. When passing through the wave range, the water will be shaken out, so that only a small amount of water remains on the surface of the fruits and vegetables. The water is discharged through the inclined water guide plate 12. When the transmission gear 2 35 is meshed with the second rack 31 again, the second rack 31 drives the transmission gear 2 35 to reset and be parallel to the water leakage limiting plate 32, so that the fruits and vegetables fall on the water-absorbing sponge cover 15, and the water leakage limiting plate 32 will conflict with the support rod 46. Fig.12 As shown, the part of the corner of the mounting plate 45 connected to the support rod 46 is complete on one side, which can provide support for the support rod 46 to contact the water leakage limit plate 32, and is missing on one side. When the support rod 46 contacts the water-absorbing sponge cover 15 and the water-absorbing belt 14, it can rotate, and the second shaft rod 30 is driven to rotate through the mounting plate 45 and the third shaft rod 47, thereby driving the water-absorbing sponge cover 15 to move. When fruits and vegetables roll down the inclined surface of the water-absorbing sponge cover 15, the contact time between the fruits and vegetables and the water-absorbing sponge cover 15 can be extended. When the water-absorbing sponge cover 15 passes through the extrusion shaft rod 16, the extrusion shaft rod 16 squeezes out the moisture in the water-absorbing sponge cover 15, so that the water-absorbing sponge cover 15 can better absorb the moisture on the outer wall of the fruits and vegetables.

[0052] Among them, the inner wall of the frame 1 is fixedly connected with a first rack 19, and the first rack 19 is located obliquely above the leaf scooping net 3. The inner wall of the frame 1 is fixedly connected with a second rack 31, and the second rack 31 is located above the water-absorbing sponge cover 15. A limit frame 17 is arranged above the detection belt 18, and the limit frame 17 is fixedly connected to the frame 1. The inner wall of one end of the frame 1 close to the detection motor 7 is fixedly connected with an inclined slide groove 6.

[0053] The fruit screening mechanism 404 includes a rejecting motor 51 and a screening plate 28 . The rejecting motor 51 is fixedly connected to the outer wall of the detection box 5 , and the screening plate 28 is fixedly connected to the output shaft of the rejecting motor 51 .

[0054] In this embodiment, the rotation speed of the detection motor 7 is set faster than that of the conveying motor 10. When the fruits and vegetables reach the detection belt 18, they are guided by the limit frame 17 so that they can move forward in rows along the limit frame 17 to avoid accumulation of fruits and vegetables. When the visual inspection equipment in the detection box 5 detects unqualified products, the corresponding rejection motor 51 is controlled to rotate through an electrical signal to move the unqualified fruits and vegetables to the side. Qualified fruits and vegetables will be passed down through the inclined chute 6, and unqualified fruits and vegetables will be passed down through the end of the detection belt 18 to complete the classification of fruits and vegetables.

[0055] The specific working principle and use method of the present invention are explained in detail below: When in use, the conveying motor 10 and the detection motor 7 are started, driving the conveying belt 11 and the detection belt 18 to convey fruits and vegetables. Taking spherical fruits and vegetables of similar size such as apples and pears as an example, the water level in the water tank 29 is higher than the leaf scooping net 3, and the spray component 4 continuously sprays to clean the fruits and vegetables, and the water is discharged through the valve on the water outlet 9 to maintain the constant water volume in the water tank 29.

[0056] The fruits and vegetables are piled up in the fruit stacking box 2, and the gap between the fruit stacking box 2 and the conveyor belt 11 is set to be able to convey only one row of fruits and vegetables. There is one row of fruits and vegetables between the two water leakage limit plates 32. When the transmission gear 2 35 on the outermost side of the water leakage limit plate 32 is meshed with the first rack 19, it is set that the first rack 19 can drive the transmission gear 2 35 to rotate ninety degrees, so that the transmission gear 2 35 drives the limit rod 39 to rotate ninety degrees. The limit rod 39 is just located between the two water leakage limit plates 32, and the gap between two adjacent limit rods 39 will not exceed the diameter of the fruits and vegetables. When the conveyor belt 11 and the water leakage limit plate 32 carry rows of fruits and vegetables into the water tank 29, impurities such as leaves will float on the water surface due to the buoyancy of the water. Since the fruits and vegetables are limited by the limit rod 39, the fruits and vegetables will be completely immersed in the water. When the slide bar 1 36 slides to the position as shown in the figure, the fruit and vegetables will be completely immersed in the water. Figure 6 When the limiting slide rail 27 is at the two protrusions shown, the slide bar 1 36 drives all the limiting rods 39 to move up and then fall down through the connecting rod 2 37 and the slide bar 38, so that the fruits and vegetables float up and are then pressed down by the limiting rods 39, so that the surface of the fruits and vegetables impacts the water flow, which better promotes the shedding of impurities. The setting height of the limiting rod 39 will not cause the fruits and vegetables to fall out of the water leakage limiting plate 32.

[0057] At the same time, when the slide bar 36 moves up, the slide bar 36 will squeeze the connecting rod 26, so that the connecting rod 26 drives the third rack 23 to move up, thereby driving the first gear 22 to rotate 180 degrees. Since the spray assembly 4 is arranged above one side of the water tank 29, the water flow will flow from the spray assembly 4 to the leaf scooping net 3, so that the impurities floating on the water surface will accumulate on the side of the water tank 29 away from the spray assembly 4. In the default state, the leaf scooping net 3 is submerged in the water in a vertical state. When the first gear 22 drives the transmission shaft 21 and the mounting frame 20 to flip, the fixing plate 24 engages with the arc-shaped rack 43, and drives the transmission gear 34 and the leaf scooping net 3 to flip 90 degrees through the second bevel gear 41 and the first bevel gear 40, so that the five leaf scooping nets 3 form a plane to scoop out the impurities, leaves, etc. floating on the water surface. The gap between the two water leakage limit plates 32 is set to be larger than Figure 6 The lengths of both ends of the two protrusions of the limiting slide rail 27 are shown.

[0058] When the slide bar 36 moves to Figure 7 When the limiting slide rail 27 is at the wave position as shown, the fruits and vegetables are in an inverted state, and the water control step is performed on the fruits and vegetables. When passing through the wave range, the water will be shaken out, so that only a small amount of water remains on the surface of the fruits and vegetables. The water is discharged through the inclined water guide plate 12. When the transmission gear 2 35 is meshed with the second rack 31 again, the second rack 31 drives the transmission gear 2 35 to reset and be parallel to the water leakage limiting plate 32, so that the fruits and vegetables fall on the water-absorbing sponge cover 15, and the water leakage limiting plate 32 will conflict with the support rod 46. Fig.12 As shown, the part of the corner of the mounting plate 45 connected to the support rod 46 is complete on one side, which can provide support for the support rod 46 to contact the water leakage limit plate 32, and is missing on one side. When the support rod 46 contacts the water-absorbing sponge cover 15 and the water-absorbing belt 14, it can rotate, and the second shaft rod 30 is driven to rotate through the mounting plate 45 and the third shaft rod 47, thereby driving the water-absorbing sponge cover 15 to move. When fruits and vegetables roll down along the inclined surface of the water-absorbing sponge cover 15, the contact time between the fruits and vegetables and the water-absorbing sponge cover 15 can be extended.

[0059] When the water-absorbing sponge sleeve 15 passes through the extrusion shaft 16, the extrusion shaft 16 squeezes out the moisture in the water-absorbing sponge sleeve 15, so that the water-absorbing sponge sleeve 15 can better absorb the moisture on the outer wall of the fruit and vegetable. The rotation speed of the detection motor 7 is set to be faster than the conveying motor 10. When the fruits and vegetables reach the detection belt 18, they are guided by the limit frame 17 so that they can move forward one by one along the limit frame 17, thereby avoiding the accumulation of fruits and vegetables and increasing the number of inspections. When the visual inspection equipment in the inspection box 5 detects unqualified products, the corresponding rejection motor 51 is controlled to rotate through an electrical signal to move the unqualified fruits and vegetables to the side. Qualified fruits and vegetables will be passed down through the inclined chute 6, and unqualified fruits and vegetables will be passed down through the end of the detection belt 18 to complete the classification of fruits and vegetables.

[0060] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fruit and vegetable appearance inspection device, comprising a frame (1), wherein the top outer wall of the frame (1) is fixedly connected to a fruit stacking box (2), the inner wall of the frame (1) is fixedly connected to a water tank (29), the outer wall of the frame (1) is fixedly connected to a spray assembly (4), both inner walls of the frame (1) are provided with limit slide rails (27), the inner wall of the frame (1) on a side away from the fruit stacking box (2) is fixedly connected to a detection box (5), the outer wall of the frame (1) is fixedly connected to a conveying motor (10), the inner wall of the frame (1) is rotatably connected to two conveying shafts (49), one of the conveying shafts (49) is fixedly connected to an output shaft of the conveying motor (10), the outer walls of the two conveying shafts (49) are sleeved with a same conveying belt (11), and the outer wall of the conveying belt (11) is fixedly connected to a water leakage limit plate (32), characterized in that: Also includes: The fruit pressing mechanism (202) is used to prevent the fruits and vegetables from floating on the water surface and falling off the conveying belt (11) when the fruits and vegetables enter the water tank (29); the fruit pressing mechanism (202) cooperates with the limiting slide rail (27) to allow the fruits and vegetables to impact up and down multiple times in the water tank (29), thereby better removing impurities on the surface of the fruits and vegetables; when the fruit pressing mechanism (202) moves downward along with the conveying belt (11), the fruits and vegetables are controlled to prevent falling; the fruit pressing mechanism (202) is installed on the water leakage limiting plate (32); The leaf scooping mechanism (101) is used to cooperate with the sliding of the fruit pressing mechanism (202) to scoop out large impurities such as leaves to prevent them from sticking to the surface of fruits and vegetables and affecting subsequent detection and imaging. The leaf scooping mechanism (101) is installed on the frame (1); A water absorption mechanism (303) is used to absorb water from the surface of the fruits and vegetables after washing, and the water absorption mechanism (303) is installed in the frame (1); and a fruit screening mechanism (404) for cooperating with the detection box (5) to screen out unqualified fruits and vegetables, the fruit screening mechanism (404) being installed on the detection box (5); The leaf scooping mechanism (101) comprises a mounting frame (20), a transmission shaft (21), a first gear (22), a third rack (23), a fixed plate (24), a connecting rod (26), three springs (25) and five leaf scooping nets (3), wherein the five leaf scooping nets (3) are all rotatably connected to the mounting frame (20), the mounting frame (20) is fixedly connected to the transmission shaft (21), the transmission shaft (21) is rotatably connected to the frame body (1), the first gear (22) is fixedly connected to the transmission shaft (21), the third rack (23) is slidably connected to the frame body (1) via a sliding groove and a sliding block, the connecting rod (26) is fixedly connected to the third rack (23), the fixed plate (24) is fixedly connected to the frame body (1), and the three springs (25) are fixedly connected between the connecting rod (26) and the fixed plate (24); The leaf scooping mechanism (101) further comprises a chain 1 (33), an arc-shaped rack (43), a fixed plate 2 (44), a rotating gear 2 (42), a first bevel gear (40) and five transmission gears 1 (34); the five transmission gears 1 (34) are fixedly connected to the five leaf scooping nets (3) respectively through a shaft rod; the outer walls of the five transmission gears 1 (34) are sleeved with the same chain 1 (33); the outer wall of one transmission gear 1 (34) is fixedly connected to the first bevel gear (40); the outer wall of the first bevel gear (40) is meshed with the second bevel gear (41); the outer wall of the second bevel gear (41) is fixedly connected to the rotating gear 2 (42); the outer wall of the rotating gear 2 (42) is fixedly connected to the fixed plate 2 (44); the outer wall of the fixed plate 2 (44) is fixedly connected to the mounting frame 1 (20); and the outer wall of the arc-shaped rack (43) is fixedly connected to the frame body (1); The leaf catching mechanism (101) is provided with two, and the two leaf catching mechanisms (101) are symmetrically distributed. The fruit pressing mechanism (202) comprises a chain (50), a connecting rod (37), two sliding rods (36), a plurality of sliding rods (38), a plurality of limiting rods (39), a plurality of chain (50) and a plurality of springs (25). The two sliding rods (36) are slidably connected to the frame (1) through limiting slide rails (27) on both sides. The connecting rod (37) is fixedly connected to the two sliding rods (36). The outer wall of the second connecting rod (37) is slidably connected to the water leakage limit plate (32), a plurality of second sliding rods (38) are rotatably connected to the second connecting rod (37), a plurality of limit rods (39) are respectively fixedly connected to the second sliding rods (38), a plurality of second sliding rods (38) are respectively slidably connected to the second transmission gears (35) through the provided sliding grooves and sliding blocks, a plurality of second chains (50) are respectively rotatably connected to the water leakage limit plate (32), and the outer walls of the second transmission gears (35) are movably connected to the second chains (50).

2. The fruit and vegetable appearance detection device according to claim 1, characterized in that: An inclined water guide plate (12) is arranged below the other conveying shaft rod (49), the inclined water guide plate (12) is fixedly connected to the inner wall of the frame (1), the outer wall of the frame (1) is provided with a drain port (8), the drain port (8) is communicated with the end of the inclined water guide plate (12), a detection motor (7) is arranged below the inclined water guide plate (12), the detection motor (7) is fixedly connected to the outer wall of the frame (1), the inner wall of the frame (1) is rotatably connected to two first shaft rods (13), the outer walls of the two first shaft rods (13) are provided with a same detection belt (18), and the outer wall of the water tank (29) is fixedly connected to a water outlet (9).

3. The fruit and vegetable appearance detection device according to claim 1, characterized in that: The water leakage limiting plates (32) are provided in plurality, and the water absorbing mechanism (303) comprises a water absorbing belt (14), a water absorbing sponge sleeve (15), an extrusion shaft rod (16), a third shaft rod (47) and two second shaft rods (30), the two second shaft rods (30) being rotatably connected to the inner wall of the frame body (1), the water absorbing belt (14) being sleeved on the outer walls of the two second shaft rods (30), the water absorbing sponge sleeve (15) being fixedly connected to the water absorbing belt (14), and the third shaft rod (47) being connected to the second shaft rods (30). A second shaft (30) is fixedly connected, the extrusion shaft (16) is fixedly connected to the frame (1), the water-absorbing sponge sleeve (15) is located between the water-absorbing belt (14) and the extrusion shaft (16), the outer wall of the third shaft (47) is fixedly connected to a mounting plate (45), the inner wall of the mounting plate (45) is rotatably connected to a support rod (46), a torsion spring (48) is fixedly connected between the support rod (46) and the mounting plate (45), and the mounting plate (45) is provided with a plurality of torsion springs.

4. The fruit and vegetable appearance detection device according to claim 2, characterized in that: The inner wall of the frame (1) is fixedly connected to a first rack (19), the first rack (19) is located obliquely above the leaf scooping net (3), the inner wall of the frame (1) is fixedly connected to a second rack (31), the second rack (31) is located above the water-absorbing sponge sleeve (15), a limit frame (17) is arranged above the detection belt (18), the limit frame (17) is fixedly connected to the frame (1), and an inclined slide groove (6) is fixedly connected to the inner wall of one end of the frame (1) close to the detection motor (7).

5. The fruit and vegetable appearance detection device according to claim 1, characterized in that: The fruit screening mechanism (404) comprises a rejection motor (51) and a screening plate (28); the rejection motor (51) is fixedly connected to the outer wall of the detection box (5); and the screening plate (28) is fixedly connected to the output shaft of the rejection motor (51).

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