Automatic pick-up and grading machine for eggs

Abstract

The application discloses an automatic picking and grading machine for eggs, and relates to the technical field of egg grading machines, which comprises a base, a fixed frame fixedly connected to the top of the base, and a mounting frame fixedly connected to the fixed frame, and further comprises a distributing mechanism located on the fixed frame. When the sliding rod moves into contact with the extrusion plate, the extrusion plate drives the sliding rod, the rotating piece and the material supporting plate to rotate, the material supporting plate rotates to put the eggs onto the material receiving plate, different sizes of eggs can be classified according to the weight of the eggs, the sliding rod drives the arc-shaped sliding piston rod II to enter the arc-shaped cylinder II, the arc-shaped sliding piston rod II extrudes the air in the arc-shaped cylinder II into the fixed shell through the fixed pipe and the hose, then the gas sprayed from the fixed shell blows the eggs, the eggs can be blown when the material supporting plate rotates to discharge the eggs, and the discharging effect of the eggs is improved.

Description

Technical Field

[0001] This invention relates to the field of egg grading machine technology, and in particular to an automatic egg picking and grading machine. Background Technology

[0002] The poultry and egg industry is large-scale, and as an important source of protein, the degree of automation in the production process of eggs directly affects production efficiency and economic benefits. Automated egg collection and grading equipment is one of the core pieces of equipment in modern large-scale egg farms. Its main functions are to automatically collect, clean, test, and accurately grade eggs according to preset standards from the chicken house.

[0003] Chinese patent CN110329754A discloses an automatic egg grading machine, comprising: a conveying mechanism including a conveying device and a transmission device; a grading mechanism including a grading frame, a bracket, a swing arm, a swing arm shaft, a pulley, and a sub-motor; a weighing mechanism including a weighing frame and a weighing rod; and a receiving mechanism including a receiving plate and a receiving box.

[0004] Based on the above research and existing technology, it was found that in the grading process, weight grading has become the mainstream commercial grading method due to its objectivity, accuracy, and ease of automation. Eggs are not perfect spheres or ellipsoids; their size ratio and surface curvature have natural differences. Within the feeding tray, the placement of eggs is random. When the tray flips, this diversity of shape and posture may cause eggs to fail to roll out smoothly, instead getting stuck on the edges or corners of the tray. If the eggs are not completely cleaned, a certain degree of adhesion occurs between the eggs and the tray surface, preventing the eggs from being discharged within the predetermined time. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic egg-collecting and grading machine to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: an automatic egg picking and grading machine, comprising a base, a fixed frame fixedly connected to the top of the base, and a mounting bracket fixedly connected to the fixed frame, and further comprising: The material distribution mechanism is located on a fixed frame; The material distribution mechanism includes a rotary air blowing unit, an auxiliary air blowing unit, and a feeding unit. The rotary air blowing unit includes a conveying assembly fixedly connected to a fixed frame. Multiple fixed rods are uniformly fixedly connected to the conveying assembly. A rotating component is rotatably connected to one end of each fixed rod. A sliding rod is slidably connected to the rotating component. A material support plate is fixedly connected to the top of the sliding rod. A return spring is sleeved on the sliding rod. The two ends of the return spring are fixedly connected to the material support plate and the rotating component, respectively. An arc-shaped cylinder II is provided on one side of the rotating component. An arc-shaped sliding piston rod II is slidably connected to the arc-shaped cylinder II. One end of the arc-shaped sliding piston rod II is slidably sleeved on the sliding rod. A fixed pipe is fixedly connected to the arc-shaped cylinder II. A fixed shell is fixedly connected to the material support plate. A flexible hose is fixedly connected to both the fixed shell and the fixed pipe. Multiple extrusion plates are fixedly connected to the fixed frame.

[0007] Preferably, the height of the plurality of extrusion plates gradually increases along the conveying direction, and a plurality of receiving plates are fixedly connected to the fixing frame.

[0008] Preferably, a torsion spring is sleeved on each of the plurality of rotating parts, and the two ends of the torsion spring are respectively fixedly connected to the rotating part and the fixed rod.

[0009] Preferably, each of the plurality of rotating parts is fixedly connected to an L-shaped rod, and one end of each of the plurality of L-shaped rods is fixedly connected to a perforated plate. The plurality of perforated plates are slidably connected to a plurality of fixed shells, and the diameter of the perforations in the plurality of perforated plates gradually decreases from top to bottom.

[0010] Preferably, the auxiliary air blowing unit includes an L-shaped frame fixedly connected to multiple fixed rods, one end of each L-shaped frame being fixedly connected to an arc-shaped cylinder, multiple arc-shaped cylinders being fixedly connected to multiple arc-shaped cylinders, an arc-shaped sliding piston rod being slidably connected to each arc-shaped cylinder, a compression spring being sleeved on the arc-shaped sliding piston rod, both ends of the compression spring being fixedly connected to the arc-shaped sliding piston rod and the arc-shaped cylinder, and a compression block being fixedly connected to the sliding rod.

[0011] Preferably, a plurality of one-way air outlet pipes are fixedly connected to the plurality of arc-shaped cylinders, and one end of each of the plurality of one-way air outlet pipes is fixedly connected to a plurality of fixed pipes.

[0012] Preferably, one end of each of the plurality of arc-shaped cylinders is fixedly connected to a one-way air inlet pipe.

[0013] Preferably, the feeding unit includes a feeding track fixedly connected to one end of the mounting frame, a bracket fixedly connected to the feeding track, a plurality of movable rods slidably connected to the bracket, the bottom ends of the plurality of movable rods being fixedly connected to a connecting frame, an upper baffle fixedly connected to one end of the connecting frame, and a lower baffle fixedly connected to the other end of the connecting frame.

[0014] Preferably, each of the plurality of movable rods is fitted with a connecting spring, and the two ends of the connecting spring are fixedly connected to the movable rod and the bracket, respectively.

[0015] This invention provides an automatic egg-collecting and grading machine, which, compared with the prior art, has the following improvements and advantages: Firstly, this invention, through the configuration of the rotating air blowing unit, allows the sliding rod to contact the extrusion plate, which in turn drives the sliding rod, rotating component, and material support plate to rotate. The rotating material support plate places the eggs onto the receiving plate, enabling the classification of eggs of different sizes based on their weight. The rotation of the sliding rod drives the arc-shaped sliding piston rod II into the arc-shaped cylinder II, which then forces the air inside the arc-shaped cylinder II into the fixed shell through the fixed pipe and flexible hose. The gas ejected from the fixed shell then blows air onto the eggs. This design allows for air blowing on the eggs while the material support plate rotates to discharge them, improving the egg discharge efficiency.

[0016] Secondly, this invention, through the setting of an auxiliary air blowing unit, when the sliding rod contacts the extrusion plate near the feeding track, the sliding rod rotates and extrudes the arc-shaped sliding piston rod 1 through the extrusion block. The movement of the arc-shaped sliding piston rod 1 forces the air in the arc-shaped cylinder 1 into the fixed tube through the one-way air outlet pipe, so that the gas in the arc-shaped cylinder 1 and the arc-shaped cylinder 2 enter the fixed shell together. This achieves the goal of combining two air streams into one for blowing when sorting the largest eggs, thereby increasing the airflow and improving the blowing effect on large eggs.

[0017] Thirdly, this invention, through the setting of the feeding unit, conveys eggs to the feeding track, allowing the eggs to slide to the bottom of the feeding track. The conveying component drives the fixed rod to move, and the movement of the fixed rod drives the rotating part, sliding rod, and material support plate to move. When the material support plate contacts the lower baffle, the material support plate drives the lower baffle to move upward. The movement of the lower baffle drives the connecting frame and the upper baffle to move. The movement of the connecting frame drives the movable rod to move, and the movement of the movable rod drives the connecting spring to move and undergo elastic deformation. When the upper baffle and the lower baffle move upward, the egg in contact with the upper baffle slides out, while the lower baffle blocks the eggs behind it. When the material support plate moves away from the lower baffle, the connecting spring drives the movable rod, connecting frame, upper baffle, and lower baffle to move downward, causing the eggs on the feeding track to slide downward until the bottom egg contacts the upper baffle, thus realizing that only one egg is released at a time. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure from a first-view perspective in this invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure from a second perspective in this invention; Figure 3 This is a three-dimensional structural diagram of the material distribution mechanism in this invention; Figure 4 This is a three-dimensional structural diagram of the rotating air blowing unit in this invention; Figure 5 This is a three-dimensional structural diagram of the auxiliary air blowing unit in this invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the fixed shell and the perforated plate in this invention; Figure 7 This is a schematic diagram of the internal cross-sectional structure of the fixed shell in this invention; Figure 8 This is a three-dimensional structural diagram of the feeding unit in this invention.

[0020] Figure label: 1. Base; 11. Fixing frame; 12. Conveying assembly; 13. Fixing rod; 14. Rotating component; 15. Torsion spring; 16. Sliding rod; 17. Material support plate; 18. Return spring; 19. Extrusion plate; 2. L-shaped frame; 21. Arc-shaped cylinder one; 22. Arc-shaped cylinder two; 23. Arc-shaped sliding piston rod two; 24. Fixing pipe; 25. Hose; 26. Fixing shell; 27. Mesh plate; 28. L-shaped rod; 3. Arc-shaped sliding piston rod one; 31. Extrusion spring; 32. Extrusion block; 33. One-way air inlet pipe; 34. One-way air outlet pipe; 4. Receiving plate; 5. Mounting frame; 51. Feeding track; 52. Support; 53. Movable rod; 54. Connecting frame; 55. Upper baffle; 56. Lower baffle; 57. Connecting spring. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention provides an automatic egg-collecting and grading machine through improvements. The technical solution of this invention is as follows: like Figures 1 to 8 As shown, this embodiment of the invention provides an automatic egg picking and grading machine, including a base 1, a fixed frame 11 fixedly connected to the top of the base 1, a mounting bracket 5 fixedly connected to the fixed frame 11, and further including: The material distribution mechanism is located on the fixed frame 11; The material distribution mechanism includes a rotary air blowing unit, an auxiliary air blowing unit, and a feeding unit. The rotary air blowing unit includes a conveying assembly 12 fixedly connected to a fixed frame 11. Multiple fixed rods 13 are evenly fixedly connected to the conveying assembly 12. A rotating component 14 is rotatably connected to one end of each fixed rod 13. A sliding rod 16 is slidably connected to the rotating component 14. A material support plate 17 is fixedly connected to the top of the sliding rod 16. A return spring 18 is sleeved on the sliding rod 16. Both ends of the return spring 18 are fixedly connected to the material support plate 17 and the rotating component 14, respectively. An arc-shaped cylinder 22 is provided on one side of the rotating component 14. An arc-shaped sliding piston rod 23 is slidably connected to the arc-shaped cylinder 22. One end of the arc-shaped sliding piston rod 23 is slidably sleeved on the sliding rod 16. A fixed pipe 24 is fixedly connected to the arc-shaped cylinder 22. A fixed shell 26 is fixedly connected to the material support plate 17. A flexible hose 25 is fixedly connected to the fixed pipe 24 and the fixed frame 11. Multiple extrusion plates 19 are fixedly connected to the fixed frame 11. The height of the multiple extrusion plates 19 gradually increases along the conveying direction. Multiple receiving plates 4 are fixedly connected to the fixed frame 11. By rotating the air blowing unit, when the sliding rod 16 moves and contacts the extrusion plate 19, the extrusion plate 19 drives the sliding rod 16, the rotating part 14 and the material support plate 17 to rotate. The rotating material support plate 17 puts the eggs into the receiving plate 4, realizing the classification of eggs of different sizes according to their weight. The rotation of the sliding rod 16 drives the arc-shaped sliding piston rod 23 to enter the arc-shaped cylinder 22. The arc-shaped sliding piston rod 23 squeezes the air in the arc-shaped cylinder 22 into the fixed shell 26 through the fixed pipe 24 and the flexible hose 25. Then the gas sprayed from the fixed shell 26 blows air onto the eggs, thereby assisting the eggs to be discharged.

[0023] Furthermore, multiple rotating parts 14 are fitted with torsion springs 15, and the two ends of the torsion springs 15 are fixedly connected to the rotating parts 14 and the fixed rod 13 respectively. With the setting of the torsion springs 15, the rotation of the rotating parts 14 drives the torsion springs 15 to rotate and undergo elastic deformation. When the sliding rod 16 moves away from the extrusion plate 19, the torsion springs 15 drive the rotating parts 14 and the sliding rod 16 to reset.

[0024] Furthermore, each of the multiple rotating parts 14 is fixedly connected with an L-shaped rod 28, and one end of each of the multiple L-shaped rods 28 is fixedly connected with a perforated plate 27. The multiple perforated plates 27 are slidably connected to multiple fixed shells 26, and the mesh diameter of the multiple perforated plates 27 gradually decreases from top to bottom. With the setting of the perforated plates 27, the heavier the egg, the longer the material support plate 17 drives the fixed shell 26 to move downward, so that the fixed shell 26 moves downward on the perforated plates 27. The further down, the smaller the mesh becomes, and the stronger the wind force is. Thus, the wind force can be adjusted according to the size of the egg, improving the egg discharge effect.

[0025] Furthermore, the auxiliary air blowing unit includes L-shaped frames 2 fixedly connected to multiple fixed rods 13, one end of each L-shaped frame 2 being fixedly connected to an arc-shaped cylinder 21, multiple arc-shaped cylinders 22 being fixedly connected to the arc-shaped cylinders 21, an arc-shaped sliding piston rod 3 being slidably connected to each arc-shaped cylinder 21, a compression spring 31 being sleeved on the arc-shaped sliding piston rod 3, the two ends of the compression spring 31 being fixedly connected to the arc-shaped sliding piston rod 3 and the arc-shaped cylinder 21 respectively, a compression block 32 being fixedly connected to a sliding rod 16, and multiple one-way air outlet pipes 34 being fixedly connected to the multiple arc-shaped cylinders 21, providing multiple one-way air outlets. One end of tube 34 is fixedly connected to multiple fixed tubes 24. With the setting of auxiliary air blowing unit, when sliding rod 16 contacts extrusion plate 19 near feed track 51, sliding rod 16 rotates and extrudes arc-shaped sliding piston rod 3 through extrusion block 32. The movement of arc-shaped sliding piston rod 3 causes the air in arc-shaped cylinder 21 to be extruded into fixed tube 24 through one-way air outlet pipe 34, so that the gas in arc-shaped cylinder 21 and arc-shaped cylinder 22 enter the fixed shell 26 together. This realizes that when sorting the largest eggs, two air paths are combined into one for blowing, which improves the air force and thus improves the blowing effect of large eggs.

[0026] Furthermore, one end of each of the multiple arc-shaped cylinders 21 is fixedly connected to a one-way air inlet pipe 33; through the setting of the one-way air inlet pipe 33, when the sliding rod 16 moves away from the extrusion plate 19, the extrusion spring 31 can drive the arc-shaped sliding piston rod 3 to reset, and then air can be drawn in through the one-way air inlet pipe 33, thus realizing the intake of air into the arc-shaped cylinder 21.

[0027] Furthermore, the feeding unit includes a feeding track 51 fixedly connected to one end of the mounting frame 5. A bracket 52 is fixedly connected to the feeding track 51, and multiple movable rods 53 are slidably connected to the bracket 52. The bottom ends of the multiple movable rods 53 are all fixedly connected to a connecting frame 54. One end of the connecting frame 54 is fixedly connected to an upper baffle 55, and the other end of the connecting frame 54 is fixedly connected to a lower baffle 56. Each of the multiple movable rods 53 is fitted with a connecting spring 57, and the two ends of the connecting spring 57 are fixedly connected to the movable rod 53 and the bracket 52, respectively. Through the setting of the feeding unit, eggs are conveyed onto the feeding track 51, causing the eggs to slide to the bottom end of the feeding track 51. The conveying component 12 drives the fixed rod 13 to move, and the movement of the fixed rod 13 drives the rotating component 14, the sliding rod 16, and... The feeding plate 17 moves. When the feeding plate 17 contacts the lower baffle 56, the feeding plate 17 drives the lower baffle 56 to move upward. The movement of the lower baffle 56 drives the connecting frame 54 and the upper baffle 55 to move. The movement of the connecting frame 54 drives the movable rod 53 to move. The movement of the movable rod 53 drives the connecting spring 57 to move and undergo elastic deformation. When the upper baffle 55 and the lower baffle 56 move upward, the egg in contact with the upper baffle 55 slides out. At the same time, the lower baffle 56 blocks the eggs behind. When the feeding plate 17 moves away from the lower baffle 56, the connecting spring 57 drives the movable rod 53, the connecting frame 54, the upper baffle 55 and the lower baffle 56 to move downward, so that the eggs on the feeding track 51 slide down until the lowest egg contacts the upper baffle 55, thus realizing that only one egg is released at a time.

[0028] Specific implementation steps: Eggs are conveyed onto the feeding track 51, causing them to slide to the bottom of the track. The conveying assembly 12 moves the fixed rod 13, which in turn moves the rotating component 14, the sliding rod 16, and the support plate 17. Simultaneously, the fixed rod 13 moves the L-shaped frame 2, the arc-shaped cylinder 1 21, and the arc-shaped cylinder 2 22. When the support plate 17 contacts the lower baffle 56, it moves the lower baffle 56 upwards. This movement of the lower baffle 56 moves the connecting frame 54 and the upper baffle 55. The movement of the connecting frame 54 moves the movable rod 53, which in turn moves the connecting spring 57, causing it to deform elastically. As the upper baffle 55 and the lower baffle 56 move upwards, the egg in contact with the upper baffle 55 slides out. Simultaneously, the lower baffle 56 blocks the eggs behind. When the support plate 17 moves away from the lower baffle 56, the connecting spring 57 drives the movable rod 53, connecting frame 54, upper baffle 55, and lower baffle 56 to move downwards, causing the eggs on the feeding track 51 to slide downwards until the lowest egg contacts the upper baffle 55, thus releasing only one egg at a time. The support plate 17 continues to move, causing the released eggs to move away from the feeding track 51 and then fall into the support plate 17. The weight of the egg causes the support plate 17 and sliding rod 16 to move downwards. The downward movement of the support plate 17 causes the return spring 18 to compress and undergo elastic deformation. The heavier the egg, the longer the sliding rod 16 and support plate 17 move downwards. Through the setting of multiple extrusion plates 19 at different heights, the sliding rod 16 and support plate 17 move downwards. The sliding rod 16 can contact the extrusion plates 19 at different heights. When the sliding rod 16 moves and contacts the extrusion plate 19, the extrusion plate 19 drives the sliding rod 16, the rotating part 14, and the material support plate 17 to rotate. The rotation of the rotating part 14 drives the torsion spring 15 to rotate and undergo elastic deformation. The rotation of the material support plate 17 places the eggs onto the receiving plate 4, realizing the classification of eggs of different sizes according to their weight. The rotation of the sliding rod 16 drives the arc-shaped sliding piston rod 23 into the arc-shaped cylinder 22. The arc-shaped sliding piston rod 23 forces the air in the arc-shaped cylinder 22 into the fixed shell 26 through the fixed pipe 24 and the flexible hose 25, so that the air is ejected through the mesh plate 27. The ejected gas blows air onto the eggs, thereby assisting in the discharge of the eggs. The heavier the egg, the more air is discharged. The longer the plate 17 moves the fixed shell 26 downwards, the more the fixed shell 26 moves downwards on the mesh plate 27. The further down it goes, the smaller the mesh becomes, and the stronger the airflow. This allows the airflow to be adjusted according to the size of the eggs, improving the egg discharge efficiency. When the sliding rod 16 contacts the extrusion plate 19 near the feed track 51, the sliding rod 16 rotates and extrudes the arc-shaped sliding piston rod 3 through the extrusion block 32. The movement of the arc-shaped sliding piston rod 3 compresses the extrusion spring 31 and causes it to deform elastically. The movement of the arc-shaped sliding piston rod 3 forces the air in the arc-shaped cylinder 21 through the one-way air outlet pipe 34 into the fixed pipe 24, so that the gas from the arc-shaped cylinder 21 and the arc-shaped cylinder 22 enter the fixed shell 26 together, enabling the sorting of the largest eggs.Two streams of air are combined into one to create a stronger airflow, thus improving the blowing effect on the large egg.

[0029] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic egg-collecting and grading machine, comprising a base (1), characterized in that: The base (1) is fixedly connected to a fixing frame (11) at its top, and a mounting frame (5) is fixedly connected to the fixing frame (11). The base also includes: The material distribution mechanism is located on the fixed frame (11); The material distribution mechanism includes a rotary air blowing unit, an auxiliary air blowing unit, and a feeding unit. The rotary air blowing unit includes a conveying assembly (12) fixedly connected to a fixed frame (11). Multiple fixed rods (13) are evenly fixedly connected to the conveying assembly (12). One end of each fixed rod (13) is rotatably connected to a rotating part (14). A sliding rod (16) is slidably connected to the rotating part (14). A material support plate (17) is fixedly connected to the top end of the sliding rod (16). A return spring (18) is sleeved on the sliding rod (16). The two ends of the return spring (18) are respectively connected to the material support plate. The plate (17) and the rotating part (14) are fixedly connected. An arc-shaped cylinder (22) is provided on one side of the rotating part (14). An arc-shaped sliding piston rod (23) is slidably connected on the arc-shaped cylinder (22). One end of the arc-shaped sliding piston rod (23) is slidably sleeved on the sliding rod (16). A fixed pipe (24) is fixedly connected on the arc-shaped cylinder (22). A fixed shell (26) is fixedly connected on the material support plate (17). A hose (25) is fixedly connected on both the fixed shell (26) and the fixed pipe (24). Multiple extrusion plates (19) are fixedly connected on the fixed frame (11). The height of the multiple extrusion plates (19) gradually increases along the conveying direction, and multiple receiving plates (4) are fixedly connected to the fixed frame (11). Torsion springs (15) are sleeved on multiple rotating parts (14), and the two ends of the torsion springs (15) are fixedly connected to the rotating parts (14) and the fixed rod (13) respectively.

2. The automatic egg-collecting and grading machine according to claim 1, characterized in that: Each of the rotating parts (14) is fixedly connected with an L-shaped rod (28), and one end of each of the L-shaped rods (28) is fixedly connected with a perforated plate (27). The perforated plates (27) are slidably connected to the multiple fixed shells (26), and the diameter of the perforated holes of the multiple perforated plates (27) gradually decreases from top to bottom.

3. The automatic egg-collecting and grading machine according to claim 2, characterized in that: The auxiliary blowing unit includes an L-shaped frame (2) fixedly connected to multiple fixed rods (13). One end of each L-shaped frame (2) is fixedly connected to an arc-shaped cylinder (21). Multiple arc-shaped cylinders (22) are fixedly connected to multiple arc-shaped cylinders (21). Arc-shaped sliding piston rods (3) are slidably connected to each arc-shaped cylinder (21). A compression spring (31) is sleeved on the arc-shaped sliding piston rod (3). The two ends of the compression spring (31) are fixedly connected to the arc-shaped sliding piston rod (3) and the arc-shaped cylinder (21) respectively. A compression block (32) is fixedly connected to the sliding rod (16).

4. The automatic egg-collecting and grading machine according to claim 3, characterized in that: Multiple one-way air outlet pipes (34) are fixedly connected to multiple arc-shaped cylinders (21), and one end of each of the multiple one-way air outlet pipes (34) is fixedly connected to multiple fixed pipes (24).

5. An automatic egg-collecting and grading machine according to claim 3, characterized in that: One end of each of the multiple arc-shaped cylinders (21) is fixedly connected to a one-way air inlet pipe (33).

6. An automatic egg-collecting and grading machine according to claim 3, characterized in that: The feeding unit includes a feeding track (51) fixedly connected to one end of the mounting frame (5), a bracket (52) fixedly connected to the feeding track (51), a plurality of movable rods (53) slidably connected to the bracket (52), a connecting frame (54) fixedly connected to the bottom ends of the plurality of movable rods (53), an upper baffle (55) fixedly connected to one end of the connecting frame (54), and a lower baffle (56) fixedly connected to the other end of the connecting frame (54).

7. An automatic egg-collecting and grading machine according to claim 6, characterized in that: Each of the movable rods (53) is fitted with a connecting spring (57), and the two ends of the connecting spring (57) are fixedly connected to the movable rod (53) and the bracket (52) respectively.

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