Automatic green plum pedicel removing mechanism

Abstract

The utility model discloses an automatic green plum pedicel removing mechanism which comprises a base, a machine frame, a support, a material distributing mechanism, a material clamping mechanism, a pedicel taking device, a material receiving pipe and a control device. The material distributing mechanism capable of distributing green plums into the material clamping mechanism is installed above the material clamping mechanism through a support on the base, the base taking device is installed on the right side of the material clamping mechanism, the material receiving pipe is installed on the right side of the base and located behind the base taking device, and the control device is installed on the front side of the base taking device. The green plum pedicel removing mechanism has the function of automatically removing the pedicels of green plums after the green plums are inserted into the clamping grooves, so that the pedicel removing efficiency is improved.

Description

An automatic plum stem removal mechanism Technical Field

[0001] This utility model patent belongs to the field of green plum processing technology, specifically relating to an automatic green plum stem removal mechanism. Background Technology

[0002] Green plums, as an important fruit resource, are widely used in the food processing industry, such as in the production of dried plums, plum wine, and plum jam. Removing the stem is a crucial step in the processing of green plums. The presence of the stem not only affects the appearance and taste of the plums but may also cause equipment damage or affect product quality during subsequent processing. Therefore, developing an efficient and reliable plum stem removal device is of great significance for improving plum processing efficiency and product quality.

[0003] Existing technologies, such as the Chinese patent (CN110946202B) disclosing a process for candied plums and a handheld plum stem-removing device used in this process, include the following steps: S1, raw material acceptance; S2, ingredient preparation; S3, mixing; S4, drying; S5, cooling; S6, inner packaging; S7, outer packaging; S8, inspection; and S9, warehousing. The handheld plum stem-removing device used in this process includes a hollow shell. A clamping part is located below a notch within the shell. The clamping part is rotatably mounted to one end of a handheld part via a connecting ring. A guide sleeve, one end of which inserts into the handheld part, is located within the connecting ring. An operating part, one end of which inserts into the shell, is located on the surface of the handheld part. A first transmission component is provided between the operating part and the clamping part, and a second transmission component is provided between the operating part and the guide sleeve. Although this device can remove the plum stems, the inventors have found the following drawbacks in practical use:

[0004] 1. Low efficiency of manual stem removal: Currently, most plum stem removal relies on manual operation, usually using a knife or fingers to directly remove the stem. This method is not only labor-intensive and inefficient, but also prone to damaging the plum flesh due to improper operation, affecting product quality. In addition, manual stem removal makes it difficult to ensure consistent removal results, and some stems may remain, affecting subsequent processing;

[0005] 2. Lack of Automation and Intelligence: Most existing stem removal equipment lacks automation capabilities, making continuous operation and precise control impossible. This not only increases the workload of operators but also makes it difficult to guarantee the stability and consistency of stem removal results. In large-scale production, such non-automated equipment struggles to meet the demands of high-efficiency production.

[0006] To solve the above problems, this utility model proposes an automatic plum stem removal mechanism. Summary of the Invention

[0007] To address the aforementioned problems, this utility model proposes an automatic plum stem removal mechanism, which automatically removes the plum stem after the plum is inserted into the clamping groove, thereby improving the stem removal efficiency.

[0008] To achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: an automatic plum stem removal mechanism, including a base, a frame, a support, a dispensing mechanism, a clamping mechanism, a stem removal device, a receiving pipe, and a control device. The base is equipped with a clamping mechanism that can clamp plums without damage, and the dispensing mechanism that can separate plums into the clamping mechanism is installed above the clamping mechanism via a support on the base. The stem removal device is installed on the right side of the clamping mechanism, the receiving pipe is installed on the right side of the base and located behind the stem removal device, and the control device is installed in front of the stem removal device.

[0009] Preferably, the material distribution mechanism further includes a tray, material distribution holes, and a conical feeding ramp. The tray is mounted on a support and has several material distribution holes arranged from the outside to the inside. The conical feeding ramp is located at the center of the upper surface of the tray.

[0010] Preferably, the right side of the tray is provided with a pressing groove and a discharging groove corresponding to the stem-removing device and the receiving tube, respectively. The pressing groove is provided with a spring A and a pressing column. The pressing column is slidably installed in the pressing groove and is connected to the bottom surface of the pressing groove through the spring A.

[0011] Preferably, the clamping mechanism further includes a clamping groove, an annular toothed airbag, an air valve, an air passage, a turntable, and a drive motor C. The clamping groove is set on the turntable and the inner diameter of the clamping groove is equal to the inner diameter of the distributing hole. The annular toothed airbag is divided into upper and lower groups and is respectively set on the upper and lower sides of the clamping groove. The air valve is set on the outside of the turntable and is connected to the annular toothed airbag through the air passage. The turntable is mounted on the drive end of the drive motor C and the drive motor C is mounted on the frame.

[0012] Preferably, the stem-removing device further includes a bidirectional lifting mechanism, a stem-removing mechanism, a pressing mechanism, and a feeding rod. The stem-removing mechanism and the pressing mechanism are respectively installed on the upper and lower sides of the bidirectional lifting mechanism, and the feeding rod is disposed on the lower surface of the turntable.

[0013] Preferably, the bidirectional lifting mechanism further includes a base, a main shaft, a stalk-retrieving screw, a pressure screw, a bevel gear a, a bevel gear b, and a drive motor A. The base is mounted on a pedestal, and the main shaft is rotatably mounted vertically in the base. The upper and lower ends of the main shaft are respectively provided with a pressure screw and a stalk-retrieving screw with opposite directions of rotation, and the pitch of the pressure screw is greater than the pitch of the stalk-retrieving screw. A bevel gear a is mounted in the middle of the main shaft, and the drive motor A is mounted in the middle of the base, with the bevel gear b on the drive end meshing with the bevel gear a.

[0014] Preferably, the stem-removing mechanism further includes a stem-removing slide, a drive motor B, a rotating shaft, a limiting groove, a conical stem-removing nozzle, a material-ejecting groove, a stem-removing hook, a spring B, a reset plate, a synchronous pulley, and a synchronous belt. The stem-removing slide is mounted on the stem-removing screw. The drive motor B is mounted below the stem-removing slide, and the drive end of the drive motor B is connected to the rotating shaft on the left side of the stem-removing slide. The rotating shaft is located below the clamping groove, and a limiting groove is provided on the upper side of the rotating shaft. A conical stem-removing nozzle is slidably mounted on the limiting groove, and a material-ejecting groove is provided at the top of the conical stem-removing nozzle. The stem-removing hook is located at the top of the rotating shaft and can extend from the conical stem-removing nozzle. A reset plate is slidably mounted on the rotating shaft below the conical stem-removing nozzle, and the lower part of the reset plate is connected to the stem-removing slide via spring B. The synchronous pulley is mounted on the rotating shaft below the stem-removing slide, and the synchronous belt connects to the synchronous pulleys on adjacent rotating shafts.

[0015] Preferably, the pressing mechanism further includes a pressing slide, a pressing rod, and a discharging rod. The pressing slide is mounted on the pressing screw, and the pressing rod and the discharging rod are mounted on the lower surface of the pressing slide and correspond to the pressing groove and the discharging groove, respectively, with the pressing rod being shorter than the discharging rod.

[0016] Preferably, the control device further includes a control panel, a processor, control buttons, and a power interface. The control panel is installed on the front side of the base, and the processor, control buttons, and power interface are installed on the control panel. The processor, control buttons, power interface, drive motor A, and drive motor B are connected to a power source to provide power to the processor, control buttons, power interface, drive motor A, and drive motor B.

[0017] The beneficial effects of this utility model are:

[0018] 1. Highly Efficient and Automated Stem Removal: The device uses a motor to drive a turntable, enabling continuous conveying and precise positioning of the plums. Only manual adjustment of the plum clamping position is required, significantly improving stem removal efficiency. The combined use of the stem removal mechanism and the pressing mechanism allows for quick and accurate insertion and removal of the stem from the plum. Compared to traditional manual stem removal methods, this method is significantly more efficient and suitable for large-scale production.

[0019] 2. Ensure the quality of stem removal: Ensure that the stem of each plum can be effectively removed, and the stem removal effect is uniform and consistent, avoiding omissions or incomplete removal that may occur when removing stems manually, thus significantly improving the processing quality of plums.

[0020] 3. Preventing stem residue: The device is designed with a material-removing rod, which promptly removes the stem from the conical stem-removing nozzle after each stem removal operation, effectively preventing stem residue from affecting the next stem removal operation. This design reduces the risk of equipment failure caused by stem residue, extends the service life of the equipment, and ensures the continuity and stability of the stem removal process.

[0021] 4. Simplified Operation: The entire stem removal process is automated. Operators only need to place the plums in the clamping trough, and the device will automatically complete a series of actions such as stem removal, stem cleaning, and pulp collection. This simplifies the operation, reduces the skill requirements for operators, minimizes manual intervention, and improves the stability and reliability of production.

[0022] 5. Integrated Collection System: After stem removal, the pulp is discharged through a discharge chute and smoothly collected through a receiving pipe, effectively separating the pulp from the stem. This integrated collection system not only facilitates subsequent processing but also reduces damage to the pulp during stem removal, improving product integrity and quality.

[0023] 6. Simple structure and low cost: This device has a simple structural design, low manufacturing cost, and is easy to maintain and repair. It is suitable for small and medium-sized plum processing enterprises, and can be quickly promoted and applied, reducing the enterprise's equipment investment costs;

[0024] 7. Improve production safety: Automated operation reduces direct contact between operators and equipment, lowers the risk of accidental injury caused by improper manual operation, and improves the safety of the production process. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0026] Figure 1 is a structural diagram of this utility model;

[0027] Figure 2 is a structural diagram of this utility model;

[0028] Figure 3 is a left view of this utility model;

[0029] Figure 4 is a cross-sectional view of A in Figure 3 of this utility model;

[0030] Figure 5 is a partial schematic diagram of B in Figure 4 of this utility model;

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Base; 2. Frame; 3. Support; 4. Material receiving pipe; 5. Tray; 6. Material distribution hole; 7. Conical feeding slope; 8. Pressure groove; 9. Discharge groove; 10. Spring A; 11. Pressure column; 12. Clamping groove; 13. Annular toothed airbag; 14. Air valve; 15. Ventilation duct; 16. Feeding rod; 17. Base; 18. Main shaft; 19. Picking screw; 20. Pressure screw; 21. Bevel gear a; 22. Bevel gear b; 23. Drive motor A; 24. Stem-removing slide; 25. Drive motor B; 26. Rotary shaft; 27. Limiting slide; 28. Conical stem-removing nozzle; 29. ​​Feeding groove; 30. Stem-removing hook; 31. Spring B; 32. Reset carrier; 33. Synchronous pulley; 34. Synchronous belt; 35. Pressing slide; 36. Pressing rod; 37. Discharge rod; 38. Control panel; 39. Processor; 40. Control button; 41. Power interface; 42. Turntable; 43. Drive motor C. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Embodiment 1

[0034] As shown in Figures 1 to 5, the prior art in this embodiment has the following problems: Based on the prior art, the inventors have found that the prior art, such as the sugar-preserved plum process disclosed in Chinese Patent (CN110946202B) and the handheld plum stem removal device applied to the process, still has the following drawbacks in actual use: manual stem removal is inefficient; lack of automation makes it difficult to meet the needs of high-efficiency production.

[0035] Therefore, the inventor provides an automatic plum stem removal mechanism, including a base 1, a frame 2, a support 3, a dispensing mechanism, a clamping mechanism, a stem removal device, a receiving pipe 4, and a control device. The base 1 is equipped with a clamping mechanism that can clamp plums without damage, which is mounted on the frame 2. The dispensing mechanism that can separate plums into the clamping mechanism is mounted above the clamping mechanism via the support 3 on the base 1. The stem removal device is mounted on the right side of the clamping mechanism. The receiving pipe 4 is mounted on the right side of the base 1 and is located behind the stem removal device. The control device is mounted in front of the stem removal device.

[0036] Its advantages are as follows: This invention enables highly efficient and automated stem removal, ensuring quality and preventing stem residue. It also simplifies the operation process, reduces the skill requirements for operators, minimizes manual intervention, and improves production stability and reliability. The integrated collection system facilitates subsequent processing, reduces damage to the fruit pulp during stem removal, and improves product integrity and quality. The device has a simple structure, low manufacturing cost, and is easy to maintain and repair. It is suitable for small and medium-sized plum processing enterprises, allowing for rapid adoption and reducing equipment investment costs. Its automated operation reduces direct contact between operators and equipment, lowering the risk of accidental injury due to improper manual operation and improving production safety.

[0037] Furthermore, the material distribution mechanism also includes a tray 5, a material distribution hole 6, and a conical feeding slope 7. The tray 5 is mounted on the support 3, and a plurality of material distribution holes 6 are provided on the tray 5 from the outside to the inside. The conical feeding slope 7 is located at the center of the upper surface of the tray 5.

[0038] The tray 5 in this structure can hold a large number of green plums to be processed. When green plums to be processed are put into the tray 5, the conical feeding slope 7 will cause the green plums to slide onto the outer ring of the tray 5, thus making it easier for them to fall into the dispensing hole 6.

[0039] Furthermore, on the right side of the tray 5, there are a pressing groove 8 and a discharging groove 9 corresponding to the stem-removing device and the receiving tube 4, respectively. The pressing groove 8 is provided with a spring A10 and a pressing column 11. The pressing column 11 is slidably installed in the pressing groove 8 and is connected to the bottom surface of the pressing groove 8 through the spring A10.

[0040] This structure facilitates the stem-removing device in removing and pressing materials, and allows for the reset of the pressing column 11 after pressing, thus avoiding obstruction of the turntable 42 rotation. It also facilitates the material discharge of the pressing mechanism.

[0041] Furthermore, the clamping mechanism also includes a clamping groove 12, an annular toothed airbag 13, an air valve 14, an air passage 15, a turntable 42, and a drive motor C43. The clamping groove 12 is disposed on the turntable 42 and the inner diameter of the clamping groove 12 is equal to the inner diameter of the material distribution hole 6. The annular toothed airbag 13 is divided into upper and lower groups and disposed on the upper and lower sides of the clamping groove 12 respectively. The air valve 14 is disposed on the outside of the turntable 42 and is connected to the annular toothed airbag 13 through the air passage 15. The turntable 42 is mounted on the drive end of the drive motor C43 and the drive motor C43 is mounted on the frame.

[0042] During operation, the direction of the plums to be processed can be adjusted manually as they fall into the clamping groove 12, so that the stems are facing downwards. The plums are then pressed into the clamping groove 12 and held stably by the annular toothed airbag 13, so that the top of the plums is lower than the clamping groove 12. This structure can adjust the clamping force of the plums by controlling the inflation of the annular toothed airbag 13, so as to stabilize the plums while avoiding damage.

[0043] Furthermore, the stem-removing device also includes a bidirectional lifting mechanism, a stem-removing mechanism, a pressing mechanism, and a material-pushing rod 16. The stem-removing mechanism and the pressing mechanism are respectively installed on the upper and lower sides of the bidirectional lifting mechanism, and the material-pushing rod 16 is disposed on the lower surface of the turntable 42.

[0044] The bidirectional lifting mechanism in this structure can control the stem-removing mechanism to grab the fruit stem from bottom to top, while simultaneously controlling the pressing mechanism to press down on the plum to be processed from top to bottom. After the stem-removing mechanism rotates to remove the stem, the two mechanisms reset, thus quickly removing the fruit stem. During the pressing process, the pushing rod on the pressing mechanism can press the stem-removed plum out of the clamping groove 12, thereby achieving material discharge. After stem removal, when the turntable 42 rotates, the pushing rod 16 will sweep across the pushing groove 29 of the conical stem-removing nozzle 28 in the stem-removing mechanism, thereby removing the fruit stem.

[0045] Furthermore, the bidirectional lifting mechanism also includes a base 17, a main shaft 18, a twig-retrieving screw 19, a pressing screw 20, a bevel gear a21, a bevel gear b22, and a drive motor A23. The base 17 is mounted on the base 1, and the main shaft 18 is rotatably mounted vertically in the base 17. The upper and lower ends of the main shaft 18 are respectively provided with a pressing screw 20 and a twig-retrieving screw 19 with opposite directions of rotation, and the pitch of the pressing screw 20 is greater than the pitch of the twig-retrieving screw 19. A bevel gear a21 is mounted in the middle of the main shaft 18, and the drive motor A23 is mounted in the middle of the base 17, and the bevel gear b22 on the drive end is meshed with the bevel gear a21.

[0046] When the structure is in operation, the drive motor A23 and the bevel gear b22 drive the bevel gear a21 to rotate the main shaft 18. This causes the pressing screw 20 and the stem-removing screw 19 on the main shaft 18 to move in opposite directions, thus achieving stem removal, pressing, and discharge. At the same time, because the length of the discharge rod 37 in the pressing mechanism is about twice the depth of the clamping groove 12, and to ensure that the pressing column 11 in the pressing groove 8 can be reset and cooperate with the stem-removing mechanism to remove the stem, the pitch of the pressing screw 20 is greater than the pitch of the stem-removing screw 19. In application, if the user finds the screw adjustment and material selection troublesome, two sets of independently controllable screw lifting mechanisms can be used to drive the stem-removing mechanism and the pressing mechanism.

[0047] Furthermore, the stem-removing mechanism also includes a stem-removing slide 24, a drive motor B25, a rotating shaft 26, a limiting slide groove 27, a conical stem-removing nozzle 28, a material-ejecting groove 29, a stem-removing hook 30, a spring B31, a reset carrier 32, a synchronous pulley 33, and a synchronous belt 34. The stem-removing slide 24 is mounted on the stem-removing lead screw 19. The drive motor B25 is mounted below the stem-removing slide 24, and the drive end of the drive motor B25 is connected to the rotating shaft 26 on the left side of the stem-removing slide 24. The rotating shaft 26 is located below the clamping groove 12, and a limiting slide is provided on the upper side of the rotating shaft 26. The limiting slide groove 27 has a conical pedicle extraction nozzle 28 slidably mounted on it, and the top of the conical pedicle extraction nozzle 28 is provided with a material feeding groove 29. The pedicle extraction hook 30 is located on the top of the rotating shaft 26 and can extend out of the conical pedicle extraction nozzle 28. The rotating shaft 26 below the conical pedicle extraction nozzle 28 has a reset carrier 32 slidably mounted on it, and the bottom of the reset carrier 32 is connected to the pedicle extraction slide 24 through a spring B31. The synchronous pulley 33 is mounted on the rotating shaft 26 below the pedicle extraction slide 24. The synchronous belt 34 connects the synchronous pulley 33 on the adjacent rotating shaft 26.

[0048] When the structure is working, the stem-removing screw 19 rotating in the bidirectional lifting mechanism drives the stem-removing slide 24 to rise. At the same time as the pressing mechanism presses down on the plum fruit, the conical stem-removing nozzle 28 is inserted into the outer ring of the fruit stem. Under the buffer of the spring B31, the conical stem-removing nozzle 28 will not insert into the fruit flesh, while the stem-removing hook 30 protruding from the center of the conical stem-removing nozzle 28 can be inserted into the fruit stem. Because the limiting slide 27 limits the conical stem-removing nozzle 28, the drive motor B25 then drives the conical stem-removing nozzle 28 and the stem-removing hook 30 to rotate, thus loosening the fruit stem. Then the conical stem-removing nozzle 28 is reset, and the stem-removing mechanism is lowered. During the descent, the conical stem-removing nozzle 28, which is lifted by the spring B31, pulls the fruit stem on the stem-removing hook 30 upward, thus realizing the stem removal. Finally, the material-pushing rod 16 sweeps away the fruit stem to facilitate the next stem removal.

[0049] Furthermore, the pressing mechanism also includes a pressing slide 35, a pressing rod 36, and a discharge rod 37. The pressing slide 35 is mounted on the pressing screw 20. The pressing rod 36 and the discharge rod 37 are mounted on the lower surface of the pressing slide 35 and correspond to the pressing groove 8 and the discharge groove 9, respectively. The length of the pressing rod 36 is shorter than that of the discharge rod 37. This structure can cooperate with the stem-removing mechanism to perform pressing, stem-removing, and discharge of materials under the drive of the bidirectional lifting mechanism.

[0050] Furthermore, the control device also includes a control panel 38, a processor 39, a control button 40, and a power interface 41. The control panel 38 is mounted on the front side of the base 17, and the processor 39, control button 40, and power interface 41 are mounted on the control panel 38. The processor 39, control button 40, power interface 41, drive motor A23, and drive motor B25 are all connected to the control panel 38. The power interface 41 can be connected to a power source to provide power to the processor 39, control button 40, power interface 41, drive motor A23, and drive motor B25.

[0051] The working principle of this utility model:

[0052] The tray 5 in this invention can hold a large number of green plums to be processed. When green plums to be processed are put into the tray 5, the conical feeding slope 7 will cause the green plums to slide onto the outer ring of the tray 5, thus making it easier for them to fall into the dispensing hole 6.

[0053] During operation, the direction of the plums to be processed can be adjusted manually as they fall into the clamping groove 12, so that the stems are facing downwards. The plums are then pressed into the clamping groove 12 and held stably by the annular toothed airbag 13, so that the top of the plums is lower than the clamping groove 12. This structure can adjust the clamping force of the plums by controlling the inflation of the annular toothed airbag 13, so as to stabilize the plums while avoiding damage.

[0054] The bidirectional lifting mechanism can control the stem-removing mechanism to grab the fruit stem from bottom to top, while simultaneously controlling the pressing mechanism to press down on the plum to be processed from top to bottom. After the stem-removing mechanism rotates to remove the stem, the two mechanisms reset, thus quickly removing the fruit stem. During the pressing process, the pushing rod on the pressing mechanism can press the plum with the stem removed out of the clamping groove 12, thereby achieving material discharge. After the stem is removed, when the turntable 42 rotates, the pushing rod 16 will sweep across the pushing groove 29 of the conical stem-removing nozzle 28 in the stem-removing mechanism, thereby removing the fruit stem.

[0055] When the bidirectional lifting mechanism is running, the drive motor A23 and bevel gear b22 drive bevel gear a21 to rotate the main shaft 18. This causes the pressing screw 20 and the stem-retrieving screw 19 on the main shaft 18 to move in opposite directions, thus achieving stem retrieval, pressing, and discharge. At the same time, because the length of the discharge rod 37 in the pressing mechanism is about twice the depth of the clamping groove 12, and to ensure that the pressing column 11 in the pressing groove 8 can be reset and cooperate with the stem-retrieval mechanism, the pitch of the pressing screw 20 is greater than the pitch of the stem-retrieval screw 19. In application, if the user finds the screw adjustment and material selection troublesome, two sets of independently controllable screw lifting mechanisms can be used to drive the stem-retrieval mechanism and the pressing mechanism.

[0056] When the stem-removing mechanism is working, the stem-removing screw 19 rotating in the bidirectional lifting mechanism drives the stem-removing slide 24 to rise. At the same time as the pressing mechanism presses down on the plum fruit, the conical stem-removing nozzle 28 is inserted into the outer ring of the fruit stem. Under the buffer of the spring B31, the conical stem-removing nozzle 28 will not insert into the fruit flesh, but the stem-removing hook 30 protruding from the center of the conical stem-removing nozzle 28 can be inserted into the fruit stem. Because the limiting slide 27 limits the conical stem-removing nozzle 28, the drive motor B25 then drives the conical stem-removing nozzle 28 and the stem-removing hook 30 to rotate, thus loosening the fruit stem. Then the conical stem-removing nozzle 28 is reset, and the stem-removing mechanism is lowered. During the descent, the conical stem-removing nozzle 28, which is lifted by the spring B31, pulls the fruit stem on the stem-removing hook 30 upward, thus realizing the stem removal. Finally, the material-pushing rod 16 sweeps away the fruit stem to facilitate the next stem removal.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic plum stem removal mechanism, comprising a base, a frame, a support, a material dispensing mechanism, a material clamping mechanism, a stem removal device, a material receiving pipe, and a control device, characterized in that: The base is equipped with a clamping mechanism that can clamp the plums without damage. The distributing mechanism that can separate the plums into the clamping mechanism is mounted above the clamping mechanism via a support on the base. The stem-removing device is installed on the right side of the clamping mechanism. The receiving pipe is installed on the right side of the base and behind the stem-removing device. The control device is installed in front of the stem-removing device.

2. The automatic plum stem removal mechanism according to claim 1, characterized in that: The material distribution mechanism also includes a tray, material distribution holes, and a conical feeding ramp. The tray is mounted on a support and has several material distribution holes arranged from the outside to the inside. The conical feeding ramp is located at the center of the upper surface of the tray.

3. The automatic plum stem removal mechanism according to claim 2, characterized in that: The tray has a pressing groove and a discharging groove on the right side, which correspond to the stem-removing device and the receiving tube, respectively. The pressing groove is equipped with a spring A and a pressing column. The pressing column is slidably installed in the pressing groove and is connected to the bottom surface of the pressing groove through the spring A.

4. The automatic plum stem removal mechanism according to claim 1, characterized in that: The clamping mechanism further includes a clamping groove, an annular toothed airbag, an air valve, an air passage, a turntable, and a drive motor C. The clamping groove is set on the turntable and the inner diameter of the clamping groove is equal to the inner diameter of the distributing hole. The annular toothed airbag is divided into upper and lower groups and is set on the upper and lower sides of the clamping groove respectively. The air valve is set on the outside of the turntable and is connected to the annular toothed airbag through the air passage. The turntable is mounted on the drive end of the drive motor C and the drive motor C is mounted on the frame.

5. The automatic plum stem removal mechanism according to claim 1, characterized in that: The stem-removing device further includes a bidirectional lifting mechanism, a stem-removing mechanism, a pressing mechanism, and a feeding rod. The stem-removing mechanism and the pressing mechanism are respectively installed on the upper and lower sides of the bidirectional lifting mechanism, and the feeding rod is set on the lower surface of the turntable.

6. The automatic plum stem removal mechanism according to claim 5, characterized in that: The bidirectional lifting mechanism further includes a base, a main shaft, a stalk-taking screw, a pressure screw, a bevel gear a, a bevel gear b, and a drive motor A. The base is mounted on a pedestal, and the main shaft is rotatably mounted vertically in the base. The upper and lower ends of the main shaft are respectively provided with a pressure screw and a stalk-taking screw with opposite directions of rotation, and the pitch of the pressure screw is greater than the pitch of the stalk-taking screw. A bevel gear a is mounted in the middle of the main shaft, and the drive motor A is mounted in the middle of the base, with the bevel gear b on the drive end meshing with the bevel gear a.

7. The automatic plum stem removal mechanism according to claim 5, characterized in that: The stem-removing mechanism further includes a stem-removing slide, a drive motor B, a rotating shaft, a limiting slide groove, a conical stem-removing nozzle, a material-ejecting groove, a stem-removing hook, a spring B, a reset plate, a synchronous pulley, and a synchronous belt. The stem-removing slide is mounted on the stem-removing screw. The drive motor B is mounted below the stem-removing slide, and the drive end of the drive motor B is connected to the rotating shaft on the left side of the stem-removing slide. The rotating shaft is located below the material-clamping groove, and a limiting slide groove is provided on the upper side of the rotating shaft. The conical stem-removing nozzle is slidably mounted on the limiting slide groove, and a material-ejecting groove is provided at the top of the conical stem-removing nozzle. The stem-removing hook is located at the top of the rotating shaft and can extend from the conical stem-removing nozzle. A reset plate is slidably mounted on the rotating shaft below the conical stem-removing nozzle, and the lower part of the reset plate is connected to the stem-removing slide via spring B. The synchronous pulley is mounted on the rotating shaft below the stem-removing slide, and the synchronous belt connects to the synchronous pulleys on adjacent rotating shafts.

8. The automatic plum stem removal mechanism according to claim 5, characterized in that: The pressing mechanism further includes a pressing slide, a pressing rod, and a discharging rod. The pressing slide is mounted on the pressing screw, and the pressing rod and the discharging rod are mounted on the lower surface of the pressing slide and correspond to the pressing groove and the discharging groove, respectively, with the pressing rod being shorter than the discharging rod.

9. The automatic plum stem removal mechanism according to claim 1, characterized in that: The control device further includes a control panel, a processor, control buttons, and a power interface. The control panel is installed on the front side of the base, and the processor, control buttons, and power interface are installed on the control panel. The processor, control buttons, power interface, drive motor A, and drive motor B are connected to a power source to provide power to the processor, control buttons, power interface, drive motor A, and drive motor B.

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