Efficient seedling raising tray grabbing and placing assembly line

Abstract

The application discloses a high-efficiency seedling tray grabbing and placing assembly line, which comprises a portal frame fixedly arranged on a supporting plate, a mounting plate detachably arranged on the portal frame, a clamping plate arranged on the mounting plate, a supporting frame arranged on one side of the portal frame, a pre-feeding belt arranged on the side of the supporting frame away from the portal frame, and a conveying belt arranged between the pre-feeding belt and the portal frame.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of seedling tray placing, and particularly relates to an efficient seedling tray grabbing and placing assembly line. BACKGROUND

[0002] The seedling tray is an indispensable component of a rice transplanter, and mainly functions to realize the seedling raising process of rice seedlings. The seedling tray is made of polyvinyl chloride as raw material and processed by special process formula, and has the characteristics of light weight, easy to carry, convenient to store and low use cost.

[0003] The seedling tray can be repeatedly used. In large-scale seedling raising bases, the seedling tray needs to be frequently transported, grabbed and placed. The grabbing and placing assembly line is prone to causing wear of the seedling tray, and the problems of substandard grabbing accuracy and further seedling tray loss are caused. The traditional seedling tray transportation mode is to set a horizontal conveying belt in contact with the bottom of the seedling tray. This transportation mode is affected by the weight of the seedling tray and the friction between the bottom of the seedling tray and the conveying belt, and has low accuracy. Moreover, a baffle is usually arranged at the terminal position of the conveying belt to force the seedling tray to stop at the desired position. The collision at the terminal position causes further wear of the seedling tray. SUMMARY

[0004] In order to solve the above problems in the prior art, the present application aims to provide an efficient seedling tray grabbing and placing assembly line.

[0005] The technical scheme adopted by the present application is as follows:

[0006] An efficient seedling tray grabbing and placing assembly line, comprising a portal frame, the portal frame is fixedly arranged on a support plate, a mounting plate is detachably arranged on the portal frame, a clamping plate is arranged on the mounting plate, a support frame is arranged on one side of the portal frame, a pre-conveying belt is arranged on the side of the support frame away from the portal frame, and a conveying belt is arranged between the pre-conveying belt and the portal frame; the conveying belt and the pre-conveying belt are perpendicular to each other, and the conveying belt and the pre-conveying belt are respectively used for conveying seedling trays.

[0007] As a preferred embodiment of the present application, the pre-conveying belt is controlled by a servo motor, the servo motor is detachably arranged on the support frame, and two pre-conveying belts are arranged on the two sides of the support frame, respectively. The distance between the two support frames is less than the width of the seedling tray.

[0008] As a preferred embodiment of the present application, one side of the pre-conveying belt is provided with a positioning frame, a group of positioning cylinders is arranged on the two sides of the positioning frame, respectively, two groups of the positioning cylinders are arranged on the two sides of the support frame, respectively, the cylinder barrel of the positioning cylinder is fixedly connected with the positioning frame, and a positioning plate is fixedly arranged on the piston rod of the positioning cylinder.

[0009] As the preferred form of the present application, a top plate is detachably mounted on the positioning frame, the top plate is located between the two pre-belts, and a feeding cylinder is further arranged between the top plate and the positioning frame, the cylinder barrel of the feeding cylinder is fixedly connected with the positioning frame, and the piston rod of the positioning frame is fixedly connected with the top plate.

[0010] As the preferred form of the present application, a plurality of extension plates are fixedly arranged on the support frame, a driving wheel and a positioning wheel are rotatably arranged on the extension plates, the conveying belt is driven by the driving wheel and the positioning wheel, one side of the driving wheel is provided with a driving motor, the driving motor is fixedly arranged on the extension plate, and the output shaft of the driving motor is fixedly connected with the rotating shaft of the driving wheel.

[0011] As the preferred form of the present application, a plurality of extension plates are fixedly arranged on the support frame, a driving wheel and a positioning wheel are rotatably arranged on the extension plates, the conveying belt is driven by the driving wheel and the positioning wheel, one side of the driving wheel is provided with a driving motor, the driving motor is fixedly arranged on the extension plate, and the output shaft of the driving motor is fixedly connected with the rotating shaft of the driving wheel.

[0012] As the preferred form of the present application, two conveying belts are arranged, the two conveying belts are respectively located on the two sides of the support frame, the two conveying belts are rotationally symmetrical, the center of symmetry is located in the middle of the support frame, and the distance between the two conveying belts is equal to the width of the seedling tray.

[0013] As the preferred form of the present application, a plurality of extension plates are fixedly arranged on the support frame, a driving wheel and a positioning wheel are rotatably arranged on the extension plates, the conveying belt is driven by the driving wheel and the positioning wheel, one side of the driving wheel is provided with a driving motor, the driving motor is fixedly arranged on the extension plate, and the output shaft of the driving motor is fixedly connected with the rotating shaft of the driving wheel.

[0014] As the preferred form of the present application, one end of the support beam is fixedly connected with the midpoint of the mounting plate, one group of air claws is arranged at each end of the mounting plate, and each group of air claws controls two clamping plates.

[0015] As the preferred form of the present application, a plurality of conveying rollers are rotatably arranged on the support frame, the support frame is provided with the conveying rollers except for the section where the pre-belt is located, and the distance between two adjacent conveying rollers is less than the length of the seedling tray.

[0016] The beneficial effects of this invention are as follows: As a high-efficiency seedling tray grasping and placement production line, this invention changes the traditional method of conveying seedling trays by relying on the bottom of the seedling trays contacting the surface of the conveyor belt. This avoids the problem of inaccurate conveying caused by the wear and tear of the seedling trays, which leads to the tipping of seedling trays during grasping and placement. By improving the conveying accuracy of the seedling trays and reducing unexpected situations during the conveying process, the grasping and placement accuracy is improved, thereby improving the efficiency of conveying and grasping and placement. By controlling the speed at which the seedling trays are placed at the top plate, the placement rate of the seedling trays can be controlled. The conveying error generated by the seedling trays at the pre-feeding belt is corrected by the conveyor belt. The seedling trays will pause briefly before contacting the conveyor belt after being conveyed by the pre-feeding belt. The deviation of the pre-feeding belt is covered by the gap between the start and stop of the conveyor belt. After leaving the conveyor belt, the seedling trays will stop on the conveyor rollers at the end of the support frame and have a fixed position. There is no need for baffle limiters, which can effectively improve the service life of the seedling trays, reduce the collision loss of the seedling trays during conveying, and also potentially improve the accuracy of seedling tray conveying. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is the present invention. Figure 1 A magnified structural diagram at point A;

[0020] Figure 3 This is the present invention. Figure 1 A top-view structural diagram;

[0021] Figure 4 This is the present invention. Figure 1 A schematic diagram of the gantry structure;

[0022] Figure 5 This is the present invention. Figure 4 Another perspective is the isometric structural schematic diagram;

[0023] Figure 6 This is the present invention. Figure 5 A magnified structural diagram at point B. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] The following is combined Figures 1-6 The following describes a specific embodiment of the present invention: a high-efficiency seedling tray handling and placement production line includes a gantry frame 12, which is fixedly mounted on a support plate 11. An mounting plate 13 is detachably mounted on the gantry frame 12, and a clamping plate 23 is provided on the mounting plate 13. A support frame 20 is provided on one side of the gantry frame 12, and a pre-feeding belt 22 is provided on the side of the support frame 20 away from the gantry frame 12. A conveyor belt 35 is provided between the pre-feeding belt 22 and the gantry frame 12. The conveyor belt 35 and the pre-feeding belt 22 are perpendicular to each other, and the conveyor belt 35 and the pre-feeding belt 22 are respectively used to transport seedling trays 24. The pre-feeding belt 22 is the traditional conveying method. A conveyor belt 35 is added between the gantry frame 12 and the pre-feeding belt 22. This changes the original method of conveying the seedling trays 24 by friction by contacting the bottom of the seedling trays 24 with the surface of the conveyor belt. This avoids the problem of inaccurate conveying caused by wear and tear of the seedling trays 24, which could lead to the trays being overturned during picking and placing. By improving the conveying accuracy of the seedling trays 24 and reducing unexpected situations during the conveying process, the accuracy of picking and placing is improved, thereby improving the efficiency of conveying and picking and placing.

[0027] Advantageously, the pre-feeding belt 22 is controlled by a servo motor, which is detachably mounted on the support frame 20. There are two pre-feeding belts 22, located on both sides of the support frame 20, and the distance between the two support frames 20 is less than the width of the seedling tray 24. This ensures that the seedling tray 24 is placed on the pre-feeding belt 22 and can contact the surface of the pre-feeding belt 22. During the pre-feeding stage, there may be conveying deviations, wear and deformation of the seedling tray 24 due to long-term use, and weight errors due to whether the seedling tray 24 is loaded with seedlings, all of which will lead to changes in friction.

[0028] Advantageously, a positioning frame 16 is provided on one side of the pre-feeding belt 22, and a set of positioning cylinders 17 are provided on both sides of the positioning frame 16. The two sets of positioning cylinders 17 are located on both sides of the support frame 20. The cylinder barrel of the positioning cylinder 17 is fixedly connected to the positioning frame 16, and a positioning plate 18 is fixedly provided on the piston rod of the positioning frame 16. When initially placing the seedling tray 24, the positioning plate 18 is used to center the seedling tray, avoiding errors in subsequent conveying caused by other factors.

[0029] Advantageously, a top plate 19 is detachably mounted on the positioning frame 16. The top plate 19 is located between the two pre-feeding belts 22. A feeding cylinder 21 is also provided between the top plate 19 and the positioning frame 16. The cylinder of the feeding cylinder 21 is fixedly connected to the positioning frame 16, and the piston rod of the positioning frame 16 is fixedly connected to the top plate 19. The feeding cylinder 21 controls the raising and lowering of the top plate 19. When a seedling tray 24 is placed on the top plate 19, its height is controlled to change, causing the seedling tray 24 to move together. When its moving distance is lower than the pre-feeding belt 22, the seedling tray is blocked by the pre-feeding belt 22 and moves along with it.

[0030] Advantageously, multiple extension plates 33 are fixedly mounted on the support frame 20. A drive wheel 32 and a positioning wheel 29 are rotatably mounted on each extension plate 33. The conveyor belt 35 is driven by the drive wheel 32 and the positioning wheel 29. A drive motor 34 is mounted on one side of the drive wheel 32 and is fixedly mounted on the extension plate 33. The output shaft of the drive motor 34 is fixedly connected to the rotating shaft of the drive wheel 32. The conveyor belt 35 is perpendicular to the pre-feeding belt 22 and does not bear the weight of the seedling tray 24, thus experiencing less wear. Simultaneously, the sides of the seedling tray 24 are not compressed during stacking, resulting in minimal deformation. Utilizing the sides of the seedling trays for conveying effectively improves conveying accuracy.

[0031] Advantageously, a groove 26 is fixedly provided on the extension plate 33, and a slider 25 is slidably arranged in the groove 26. A limiting wheel 27 is rotatably arranged on the slider 25. The conveyor belt 35 is driven by the limiting wheel 27, the drive wheel 32, and the alignment wheel 29. A hydraulic cylinder 28 is provided on one side of the slider 25. The cylinder barrel of the hydraulic cylinder 28 is fixedly connected to the extension plate 33, and the piston rod of the hydraulic cylinder 28 is fixedly connected to the slider 25. The conveyor belt 35 is greatly affected by seasons and temperature. In order to ensure that it remains taut in any working environment, a hydraulic cylinder 28 (hydraulic spring) and a limiting wheel 27 are used in combination.

[0032] Advantageously, there are two conveyor belts 35, located on opposite sides of the support frame 20. The two conveyor belts 35 are rotationally symmetrical, with their center of symmetry located in the middle of the support frame 20. The distance between the two conveyor belts 35 is equal to the width of the seedling tray 24. Two drive motors 34 are located on opposite sides of the support frame 20, but not opposite each other; instead, they are located at different ends of the support frame 20. This avoids excessive pressure on the same section of the support frame 20, distributes the load across the entire device, and improves its service life.

[0033] Advantageously, a load-bearing beam 14 is fixedly mounted on the gantry frame 12, a flat rack 40 is fixedly mounted on the load-bearing beam 14, a bearing plate 39 is slidably mounted on the load-bearing beam 14, a translation motor 41 is fixedly mounted on the bearing plate 39, and a gear is fixedly mounted on the output shaft of the translation motor 41 and meshes with the flat rack 40; a moving frame 36 is fixedly mounted on the bearing plate 39, a support beam 15 is slidably mounted on the moving frame 36, a vertical rack 37 is fixedly mounted on one side of the support beam 15, a lifting motor 38 is fixedly mounted on the moving frame 36, and a gear is fixedly mounted on the output shaft of the lifting motor 38 and meshes with the vertical rack 37. The translation motor 41 and the lifting motor 38 control the horizontal and vertical movement of the clamping plate 23, respectively.

[0034] Advantageously, one end of the support beam 15 is fixedly connected to the midpoint of the mounting plate 13, and each end of the mounting plate 13 is provided with a set of pneumatic grippers 30, each set of pneumatic grippers 30 controlling two clamping plates 23 respectively. This allows for the simultaneous gripping of two seedling trays 24. Since the width of a common square support plate (the plate on which the seedling trays 24 are placed) is equal to the length of two seedling trays, gripping two seedling trays 24 simultaneously is common sense and highly efficient.

[0035] Advantageously, the support frame 20 is rotatably equipped with multiple conveying rollers 31. Excluding the section of the support frame 20 containing the pre-feeding belt 22, the remaining portion of the support frame 20 is equipped with conveying rollers 31. The distance between two adjacent conveying rollers 31 is less than the length of the seedling tray 24. The conveying rollers 31 are not powered; they rotate upon contact with a moving seedling tray 24, remaining stationary when not in contact with it.

[0036] Working principle of this invention:

[0037] In the initial state, the height of the top plate 19 is higher than the height of the positioning plate 18;

[0038] The seedling tray 24 is placed on the top plate 19, and the feeding cylinder 21 is started to control the height of the top plate 19 to decrease until the bottom surface of the seedling tray 24 contacts the upper surface of the pre-feeding belt 22. During this process, the two sets of positioning cylinders 17 are started in coordination to control the two positioning plates 18 to move closer to each other. The two positioning plates 18 correct the posture of the seedling tray 24 and center it. After the two positioning plates 18 clamp the seedling tray 24, they immediately reset.

[0039] The pre-feeding belt 22 is always rotating. When the seedling tray 24 contacts the pre-feeding belt 22 and the positioning plate 18 is no longer in contact with the side of the seedling tray 24, the seedling tray 24 moves together with the pre-feeding belt 22 under the action of friction.

[0040] The pre-feeding belt 22 continues to move. When it passes the conveyor belt 35, the drive motor 34 starts and controls the drive wheel 32 to rotate. The drive wheel 32, in conjunction with the alignment wheel 29, makes the conveyor belt 35 rotate. The rotation of the conveyor belt 35 drives the seedling tray 24 to continue to move.

[0041] During this process, the movement of the seedling tray 24 relies on the friction between the conveyor belt 35 and the side of the seedling tray 24. Whether seedlings are planted in the seedling tray 24 or not, and the weight of the seedling tray 24, will not affect the conveying accuracy of the seedling tray 24. The weight of the seedling tray 24 is supported by the conveyor roller 31 at its bottom. During the movement of the seedling tray 24, the conveyor roller 31 that comes into contact with the seedling tray 24 is forced to rotate.

[0042] During the above process, the limit wheel 27 will always keep the conveyor belt 35 taut under the action of the hydraulic cylinder 28.

[0043] The drive motor 34 is programmable. By controlling the speed at which the seedling tray 24 is placed at the top plate 19, the placement rate of the seedling tray 24 can be controlled. The conveying error of the seedling tray 24 at the pre-feeding belt 22 will be corrected by the conveyor belt 35 (the seedling tray 24 will pause briefly before being conveyed by the pre-feeding belt 22 and contacting the conveyor belt 35, and the deviation of the pre-feeding belt 22 will be covered by the gap between the start and stop of the conveyor belt 35). After leaving the conveyor belt 35, the seedling tray 24 will stop on the conveyor roller 31 at the end of the support frame 20 and has a fixed position, without the need for baffle limit.

[0044] The pneumatic gripper 30 works in conjunction with the conveyor belt 35 to start intermittently. When two seedling trays 24 are placed at the end of the support frame 20, the translation motor 41 starts to move the bearing plate 39, and the lifting motor 38 starts to raise and lower the support beam 15. The control plate 13 approaches the seedling tray 24, and the pneumatic gripper 30 starts to control the clamping plate 23 to clamp the seedling tray 24. The translation motor 41 and the lifting motor 38 work together to move it to the designated position, and then the pneumatic gripper 30 controls the clamping plate 23 to release.

[0045] During the above process, when there is no seedling tray 24 at the end of the support frame 20, the newly arrived seedling tray 24 stops near the conveyor belt 35. After the second seedling tray 24 arrives, it will push the first seedling tray 24 to slide forward, thereby ensuring that the second seedling tray 24 can stop in the designated position.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A high-efficiency tray-grabbing and tray-arranging production line for seedling trays, characterized in that: The system includes a gantry frame, which is fixedly mounted on a support plate. An mounting plate is detachably installed on the gantry frame, and a clamp is provided on the mounting plate. A support frame is provided on one side of the gantry frame, and a pre-feeding belt is provided on the side of the support frame away from the gantry frame. A conveyor belt is provided between the pre-feeding belt and the gantry frame. The conveyor belt and the pre-feeding belt are perpendicular to each other, and the conveyor belt and the pre-feeding belt are used to transport seedling trays respectively. Multiple conveying rollers are rotatably mounted on the support frame. Except for the section of the support frame where the pre-feeding belt is located, the remaining part of the support frame is equipped with the conveying rollers. The distance between two adjacent conveying rollers is less than the length of the seedling tray. There are two conveyor belts, which are located on both sides of the support frame. The two conveyor belts are rotationally symmetrical, with the center of symmetry located in the middle of the support frame. The distance between the two conveyor belts is equal to the width of the seedling tray. When the seedling tray contacts the pre-feeding belt, the seedling tray moves along with the pre-feeding belt under the action of friction. The pre-feeding belt continues to move, and when it passes the conveyor belt, the movement of the seedling tray relies on the friction between the conveyor belt and the side of the seedling tray. The weight of the seedling tray is supported by the conveyor roller at its bottom. During the movement of the seedling tray, the conveyor roller that contacts the seedling tray is forced to rotate. After leaving the conveyor belt, the seedling tray will stop on the conveyor roller at the end of the support frame and has a fixed position, without the need for baffle limit.

2. The high-efficiency tray grabbing and tray placement production line according to claim 1, characterized in that: The pre-feeding belt is controlled by a servo motor, which is detachably mounted on the support frame. There are two pre-feeding belts, located on both sides of the support frame, and the distance between the two support frames is less than the width of the seedling tray.

3. The high-efficiency tray grabbing and tray placement production line according to claim 2, characterized in that: A positioning frame is provided on one side of the pre-feeding belt, and a set of positioning cylinders is provided on each side of the positioning frame. The two sets of positioning cylinders are located on both sides of the support frame. The cylinder barrel of the positioning cylinder is fixedly connected to the positioning frame, and a positioning plate is fixedly provided on the piston rod of the positioning frame.

4. The high-efficiency tray grabbing and tray placement production line for seedling trays according to claim 3, characterized in that: A top plate is detachably installed on the positioning frame. The top plate is located between the two pre-feeding belts. A feeding cylinder is also provided between the top plate and the positioning frame. The cylinder barrel of the feeding cylinder is fixedly connected to the positioning frame, and the piston rod of the positioning frame is fixedly connected to the top plate.

5. The high-efficiency tray-grabbing and tray-arranging production line for seedling trays according to claim 4, characterized in that: Multiple extension plates are fixedly mounted on the support frame. A drive wheel and a positioning wheel are rotatably mounted on the extension plates. The conveyor belt is driven by the drive wheel and the positioning wheel. A drive motor is mounted on one side of the drive wheel. The drive motor is fixedly mounted on the extension plate. The output shaft of the drive motor is fixedly connected to the rotating shaft of the drive wheel.

6. The high-efficiency tray grabbing and tray placement production line according to claim 5, characterized in that: A slide groove is fixedly provided on the extension plate, and a slider is slidably provided in the slide groove. A limit wheel is rotatably provided on the slider. The conveyor belt is driven by the limit wheel, the drive wheel and the alignment wheel. A hydraulic cylinder is provided on one side of the slider. The cylinder barrel of the hydraulic cylinder is fixedly connected to the extension plate, and the piston rod of the hydraulic cylinder is fixedly connected to the slider.

7. The high-efficiency tray grabbing and tray placement production line according to claim 1, characterized in that: A load-bearing beam is fixedly mounted on the gantry frame. A flat rack is fixedly mounted on the load-bearing beam. A bearing plate is slidably mounted on the load-bearing beam. A translation motor is fixedly mounted on the bearing plate. A gear is fixedly mounted on the output shaft of the translation motor and meshes with the flat rack. A moving frame is fixedly mounted on the bearing plate. A support beam is slidably mounted on the moving frame. A vertical rack is fixedly mounted on one side of the support beam. A lifting motor is fixedly mounted on the moving frame. A gear is fixedly mounted on the output shaft of the lifting motor and meshes with the vertical rack.

8. The high-efficiency tray grabbing and tray placement production line according to claim 7, characterized in that: One end of the support beam is fixedly connected to the midpoint of the mounting plate, and a set of pneumatic grippers is provided at each end of the mounting plate. Each set of pneumatic grippers controls two clamping plates respectively.

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