Micro-vibration walnut shell breaking and shelling device and use method thereof

Abstract

The invention discloses a micro-vibration walnut shell breaking and husking device and a using method thereof.The micro-vibration walnut shell breaking and husking device comprises a conveying mechanism, a vibration husking device and a screening and collecting mechanism, the conveying mechanism comprises a conveying belt support, and the conveying belt support is provided with a plurality of conveying belts used for conveying walnuts in parallel; the vibration shelling device comprises a micro-vibration platform and a fixed pressure head located above the micro-vibration platform, the micro-vibration platform is provided with a lower channel in butt joint with the conveying belt, the position, corresponding to the lower channel, of the fixed pressure head is provided with an upper channel, and the corresponding lower channel and upper channel form a walnut shelling channel; according to the deep-grain walnut shell breaking and husking device, actions such as shell breaking and husking of deep-grain walnuts are achieved through stamping and micro-vibration, the problem that the difficulty of manual shell breaking and husking of the deep-grain walnuts is large is solved, the shell breaking and husking efficiency of the walnuts and the completeness of kernels are improved, and the working efficiency of the walnut shell breaking and husking device is improved. The purposes of reducing the labor cost for obtaining nuts, effectively increasing the economic benefits of crops such as walnuts and promoting the development of the walnut processing industry are achieved.

Description

Technical Field

[0001] The invention relates to the field of walnut shelling equipment, in particular to a micro-vibration walnut shelling device and a use method thereof. Background Art

[0002] Walnut is an important economic tree species, planted all over the world. Walnut kernels are rich in nutrients such as protein, unsaturated fatty acids, phospholipids and vitamins, and have important medicinal value and health functions in preventing and treating cardiovascular diseases, diabetes and obesity. The most critical link in the primary processing of walnuts is the shelling and separation of the shell and the kernel. The walnuts are shelled without damaging the kernels, and the kernels are taken out intact to provide raw materials for subsequent deep processing and ensure the high quality of walnuts. At present, the walnut shelling and shell kernel separation technology and equipment are backward and the labor cost is high, resulting in a walnut processing rate of less than 20%, which limits the effective growth of the economic benefits of walnuts.

[0003] According to different loading methods, domestic and foreign scholars have designed various types of walnut shelling machines, mainly including extrusion, kneading, impact, shearing and other methods. Among them, the extrusion walnut shelling machine has become a more widely used shelling method due to its simple structure, high shelling efficiency and strong adaptability. The contact type between the walnut and the shelling element is mostly single-point or line load, but due to the single-point or line load contact mode, the shell is unevenly stressed and the crack propagation is poor, which can easily damage the kernel. Surface load and multi-point extrusion load are not only conducive to the generation and propagation of cracks, but also can reduce the stress value and deformation when the shell breaks while the kernel remains intact. According to the physical properties of walnut shell kernels, domestic and foreign scholars have proposed separation methods such as intelligent visual recognition technology, electrostatic and magnetic separation. These methods have the defects of high application cost, time-consuming and contamination of kernels, which limits their promotion and application. The sheller and separator are connected in series. The sheller adopts stamping method to form various contact methods such as surface load and multi-point extrusion load, so that the cracks of the walnut shells are uniform. The separator adopts micro-vibration separation method and the auxiliary effect of external fans to reduce the complexity of the mixture of kernels and shells and improve the accuracy and reliability of separation.

[0004] Based on the above problems, a micro-vibration walnut shelling and peeling machine device is designed to solve the problems of incomplete shelling, kernel damage, and incomplete separation in the primary processing links such as deep-grained walnut shelling and shell-kernel separation, improve the quality of walnut shelling and peeling, reduce labor costs, increase economic benefits, and promote the development of the walnut processing industry. Summary of the invention

[0005] In view of the above problems, the present invention provides a micro-vibration walnut shelling and peeling device and a use method thereof, which utilizes stamping and micro-vibration to achieve shelling and kernel separation of deep-grained walnuts, improve the shelling and shelling efficiency of walnuts and the integrity of kernels, reduce the labor cost of obtaining kernels, and promote the development of the walnut processing industry.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a micro-vibration walnut shelling and peeling device, comprising a conveying mechanism, a vibrating shelling device and a screening and collecting mechanism, the conveying mechanism comprising a conveyor belt bracket, the conveyor belt bracket is provided with a plurality of conveyor belts for transporting walnuts in parallel, the vibrating shelling device comprises a micro-vibration platform and a fixed pressure head located above the micro-vibration platform, the micro-vibration platform is provided with a lower groove docking with the conveyor belt, the fixed pressure head is provided with an upper groove at a position corresponding to the lower groove, the corresponding lower groove and the upper groove constitute a walnut shelling channel, and the other side of the shelling channel is docked with the screening and collecting mechanism.

[0007] Furthermore, a vibration driving mechanism is provided under the micro-vibration platform, and the vibration driving mechanism includes a base, a longitudinal screw rod and a servo motor A driving the longitudinal screw rod are provided on the base, a mounting platform is horizontally installed on the slider of the longitudinal screw rod, one side of the mounting platform is connected to the bracket sliding guide vertically installed on the base, a horizontal screw rod and a servo motor B driving the horizontal screw rod are provided on the mounting platform, and the micro-vibration platform is installed on the slider on the horizontal screw rod.

[0008] Furthermore, a box body is provided on one side of the base, and the upper part of the box body is connected to the fixed pressure head through a connecting rod, and the fixed pressure head is arranged directly above the micro-vibration platform.

[0009] Furthermore, the screening and collecting mechanism includes a screen connected to the lower channel, a rack is provided on the other side of the screen, and a collection box connected to the screen is provided above the rack.

[0010] Furthermore, an upward arc groove is provided at the entrance of the upper groove, and diamonds at fixed pressure heads are provided on both side edges of the arc groove. Diamonds at micro-vibration platforms are also provided at the positions of the diamonds at fixed pressure heads corresponding to the lower groove.

[0011] Furthermore, a buffer point is provided on the lower groove, and the buffer point includes a protrusion and a hole for placing the protrusion. The bottom of the protrusion is limited by the notch of the hole, and a spring is provided between the bottom of the protrusion and the bottom of the hole for pushing the upper part of the protrusion out of the hole.

[0012] Furthermore, the buffer point is arranged at 5-10 cm from the entrance of the lower channel.

[0013] Furthermore, the micro-vibration platform is arranged to be water-inclined, with a side close to the conveying mechanism being higher than a side close to the vibration shelling device.

[0014] Furthermore, the conveyor belt support is provided with three conveyor belts, which are respectively used to transport walnuts of different sizes.

[0015] A method for using a micro-vibration walnut shelling and peeling device specifically comprises the following steps: Step a, the walnuts pass through the sorting mechanism and enter the first conveyor belt, the second conveyor belt and the third conveyor belt of the corresponding size on the conveying mechanism, and are transported to the entrance of each groove of the micro-vibration platform, and stay at the entrance for a short time under the action of the convex points; Step b, servo motor A receives the PLC instruction to drive the screw to rotate, so that the micro-vibration platform rises. At this time, the grooves under the micro-vibration platform, the walnut and the grooves on the fixed pressure head are in contact. Diamond particles are welded on the edges of each groove of the micro-vibration platform to increase the local stress of the walnut during shock and pressure. At the same time, servo motor B receives the PLC instruction to drive the horizontal screw to realize the horizontal movement of the micro-vibration platform for a certain distance. When the walnut is squeezed, there is a horizontal force that adds a torsion to the walnut shell, thereby generating internal stress that destroys the shell, and the walnut shock and shell breaking action is completed; Step c, the servo motor A receives the PLC instruction to drive the longitudinal screw rod to realize the micro-vibration platform to descend a certain distance. The servo motor A periodically rotates forward and reversely according to the PLC instruction to realize the up and down vibration of the micro-vibration platform. The amplitude of the vibration can be controlled by adjusting the period of the signal. In this way, the micro-vibration platform forms continuous vibration and small-amplitude extrusion and other actions. The convex points of each groove are pressed down, and the walnut passes the convex point position and continues to descend along the slope. During the descent of the walnut, the micro-vibration platform continues to vibrate and squeeze, which can not only realize shell breaking but also gradually separate the walnut shell from the walnut kernel, and the walnut kernel and the walnut shell roll down to the exit of each groove of the micro-vibration platform; Step d, walnut shells and walnut kernels slide to the outlet screen, the screen is connected to the micro-vibration platform, further vibrates synchronously and sieves off the walnut shells, and finally the walnut kernels are recycled into the collection box. Then, servo motor A receives the PLC instruction, stops forward and reverse rotation, and the micro-vibration platform stops vibrating. Servo motor A and servo motor B receive the PLC instruction to drive the longitudinal screw and horizontal screw respectively to control the micro-vibration platform to return to the original position, and the working process ends.

[0016] The beneficial effects of the present invention are as follows: 1. The beneficial effects of the present invention are that a servo motor and a screw rod are combined to form a punching and micro-vibration action. The walnut is shelled under the combined action of the surface load of the fixed pressure head groove and the micro-vibration groove and the diamond point load at the groove chamfer. The shelling force is uniform and the efficiency is improved. Under the frequent micro-vibration and small-amplitude extrusion drive of the micro-vibration platform, local shelling and shell-kernel separation are achieved economically and efficiently. The micro-vibration walnut shelling and shelling machine device can prevent the walnut from being contaminated. The overall device is small in size, saves space and is easy to install.

[0017] 2. Through the micro-vibration of the micro-vibration platform and the action of gravity, the mixture of walnut shells and walnut kernels slides to the outlet screen. The screen is connected to the micro-vibration platform. With the assistance of an external fan, the walnut shells are further shaken off and screened to achieve shell separation and recovery and storage of walnut kernels, which reduces the complexity of the mixture and improves the accuracy and reliability of separation.

[0018] 3. The micro-vibration walnut shelling and peeling machine adopts a spring buffer point to keep the walnuts at the entrance of the micro-vibration platform for fixed-point shelling. The spring is deformed after the shelling is crushed. The shelled walnuts pass the buffer point under the action of the micro-vibration platform, and are further squeezed to break the shell, which can ensure the effectiveness of the shelling by crushing and realize the separation of the shell and the kernel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention from the left side perspective; Figure 3 It is a structural schematic diagram of the present invention from the right side viewing angle; Figure 4 This is a schematic diagram of the buffer point structure of the present invention; Figure 5 It is a schematic diagram of the pressing between the walnut, the micro-vibration channel and the diamond in the present invention; The accompanying drawings are marked as follows: first conveyor belt 1, second conveyor belt 2, third conveyor belt 3, conveyor belt bracket 4, servo motor A 5, longitudinal screw rod 6, micro-vibration platform 7, box body 8, fixed pressure head 9, diamond 10 at micro-vibration platform, connecting rod 11, screen 12, collection box 13, storage rack 14, spring 15, horizontal screw rod 16, servo motor B 17, base 18, bracket 19, first convex point 20, second convex point 21, third convex point 22, diamond 23 at fixed pressure head, first groove 24 of micro-vibration platform, second groove 25 of micro-vibration platform, third groove 26 of micro-vibration platform, first groove 27 of fixed pressure head, second groove 28 of fixed pressure head, third groove 29 of fixed pressure head, and mounting platform 30. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0021] See also Figure 1-Figure 5 As shown, it includes a conveying mechanism, a vibrating shelling device and a screening and collecting mechanism. The conveying mechanism includes a conveyor belt bracket. The conveyor belt bracket is provided with a first conveyor belt 1, a second conveyor belt 2, and a third conveyor belt 3 in parallel. The widths of the three conveyor belts are different and are used to transport walnuts of different sizes. The vibrating shelling device includes a micro-vibration platform 7 and a fixed pressure head 9 located above the micro-vibration platform 7. The micro-vibration platform 7 is provided with a first micro-vibration platform groove 24, a second micro-vibration platform groove 25, and a third micro-vibration platform groove 26 that are connected to the first conveyor belt 1, the second conveyor belt 2, and the third conveyor belt 3. The fixed pressure head 9 is correspondingly provided with a first fixed pressure head groove 27, a second fixed pressure head groove 28, and a third fixed pressure head groove 29. The other side of the shelling channel is connected to the screening and collecting mechanism. A vibration driving mechanism is provided below the micro-vibration platform 7, and the vibration driving mechanism includes a base 18, on which a longitudinal screw rod 6 and a servo motor A5 for driving the longitudinal screw rod 6 are provided, and a mounting platform 30 is horizontally mounted on the slider of the longitudinal screw rod 6, and one side of the mounting platform 30 is slidably connected to a bracket 19 vertically mounted on the base 18, and a horizontal screw rod 16 and a servo motor B5 for driving the horizontal screw rod 16 are provided on the mounting platform 30. 17, the micro-vibration platform 7 is installed on the slider on the horizontal screw rod 16, and a box body 8 is also provided on one side of the base 18. The upper part of the box body 8 is connected to the fixed pressure head 9 through a connecting rod 11. The fixed pressure head 9 is arranged directly above the micro-vibration platform 7. The screening and collecting mechanism includes a screen 12 connected to the first groove 24, the second groove 25 and the third groove 26 of the micro-vibration platform. A rack 14 is provided on the other side of the screen 12. A collection box 13 connected to the screen 12 is provided above the rack 14. The first groove 27, the second groove 28 and the third groove 29 of the fixed pressure head are all provided with upward arc grooves at the entrances. The edges of both sides of the arc groove are provided with diamonds 23 at the fixed pressure head, the first groove 24 of the micro-vibration platform, the second groove 25 of the micro-vibration platform, and the third groove 26 of the micro-vibration platform. The positions of the corresponding diamonds 23 at the fixed pressure head are also provided with diamonds 10 at the micro-vibration platform, and the first groove 24 of the micro-vibration platform, the second groove 25 of the micro-vibration platform, and the third groove 26 of the micro-vibration platform are provided with buffer points, the buffer points include convex points and holes for placing the convex points, the bottom of the convex points and the notch of the hole are limited, and a spring 15 is provided between the bottom of the convex points and the bottom of the hole, which is used to push the upper part of the convex points out of the outside of the hole, and the buffer point is set at 5cm at the entrance of the lower groove. The micro-vibration platform 7 is tilted, and the side close to the conveying mechanism is higher than the side close to the vibration shelling device.

[0022] When the present invention is used in a specific manner, the servo motor B 17 is connected to the horizontal screw rod 16 through a coupling to form a horizontal moving platform, and the servo motor A 5 is driven by gears and chains to cooperate with the longitudinal screw rod 6 to form a longitudinal moving platform. The longitudinal moving platform is fixed on the base 18 through a bracket 19, the horizontal moving platform cooperates with the longitudinal moving platform through the horizontal screw rod 16 and the slider, and the micro-vibration platform 7 is fixedly connected to the horizontal moving platform. The screen 12 is fixedly connected to the micro-vibration platform 7, and the screen 12 is in contact with the collection box 13. Walnuts are placed on the first conveyor belt 1 of corresponding sizes according to different sizes, and are transmitted to the entrance of the first groove 24 of the micro-vibration platform, the second groove 25 of the micro-vibration platform, and the third groove 26 of the micro-vibration platform on the second conveyor belt 2 and the third conveyor belt 3, and the preparation action is completed. Through the programming interface of the plc programmable logic controller, the position instruction is set, and the circular motion of the servo motor 5 is converted into the linear motion of the working platform by the rotation of the longitudinal screw rod 6, so as to realize the rise of the micro-vibration platform 7. The walnut is blocked by the buffer point composed of the first convex point 20, the second convex point 21, the third convex point 22 and the spring 15 in the first groove 24, the second groove 25 and the third groove 26 of the micro-vibration platform, and the walnut stays at 5 cm from the entrance of the first groove 24, the second groove 25 and the third groove 26 of the micro-vibration platform. As the micro-vibration platform 7 rises, the micro-vibration platform groove, the walnut and the fixed pressure head groove form contact. The edges of each groove of the micro-vibration platform 7 are welded with diamonds 10 at the micro-vibration platform and diamonds 23 at the fixed pressure head of each groove edge of the fixed pressure head 9 to increase the local stress of the walnut during shock pressure. At the same time, the servo motor B 17 receives the PLC instruction to drive the horizontal screw 16 to realize the horizontal movement of the micro-vibration platform 7 for a certain distance. When the walnut is squeezed, there is a horizontal force to increase a torsion force on the walnut shell, thereby generating internal stress that destroys the shell. During the movement of the micro-vibration platform 7, the first convex point 20, the second convex point 21 and the third convex point 22 are assembled with the spring 15 to form a buffer point, which is pressed down by the walnut after the shock and pressure shelling, and the walnut shock and pressure shelling action is completed. The servo motor 5 receives the PLC instruction to drive the longitudinal screw rod 6 to realize the micro-vibration platform 7 to descend a certain distance. The servo motor 5 is periodically reversed according to the PLC instruction to realize the up and down vibration of the micro-vibration platform 7, and the cycle of the adjustment signal can control the amplitude of the vibration. The continuous vibration and small amplitude extrusion of the micro-vibration platform 7 can not only realize the local shelling but also make the walnut shell and the walnut kernel gradually separate, roll down to the first groove 24 of the micro-vibration platform, the second groove 25 of the micro-vibration platform and the third groove 26 of the micro-vibration platform, and the micro-vibration shelling action is completed. Finally, repeat the micro-vibration shelling step, under the action of gravity and vibration, the walnut shell and the walnut kernel slide to the outlet screen 12, the screen 12 is connected to the micro-vibration platform 7, and the walnut shell is further shaken off and screened, and the final walnut kernel is recycled to the collection box 13.Then, the servo motor A5 receives the PLC instruction, stops forward and reverse rotation, and the micro-vibration platform 7 stops vibrating. The servo motor A5 and the servo motor B17 receive the PLC instruction to drive the longitudinal screw rod 6 and the horizontal screw rod 16 to control the micro-vibration platform 7 to return to the original position, and the working process ends.

[0023] In the embodiment, the fixed pressure head 9 has a certain slope. In order to facilitate the walnuts to roll to the outlet, a plurality of arc grooves are provided on the fixed pressure head 9 to play a guiding role. When the micro-vibration platform 7 is punching, each groove is chamfered and welded with diamonds 23 at the fixed pressure head to increase the local pressure of the deep-grained walnuts and improve the shelling efficiency.

[0024] In the embodiment, the micro-vibration platform 7 has the same slope as the fixed pressure head 9, and diamonds 10 are welded at the chamfers of multiple arc grooves thereon to increase the local pressure of the micro-vibration platform during operation. A buffer point consisting of a first convex point 20, a second convex point 21, a third convex point 22 and a spring 15 is provided about 5 cm from the entrance of each groove. In order to make the walnut stay at the entrance stage for fixed-point shell breaking, after the shell is broken by shock pressure, the walnut rolls downward over the compressed buffer point under the action of the platform micro-vibration.

[0025] In the embodiment, the outlet of the micro-vibration platform 7 is fixedly connected to the screen 12. When the walnuts are broken and roll onto the screen, the micro-vibration platform 7 drives the screen 12 to perform micro-vibration reciprocating motion to further shake off the walnut shells, so that the walnut shells are separated from the walnut kernels. Under the action of gravity and micro-vibration, the walnut kernels roll into the collection box 13.

[0026] In the embodiment, the servo motor B 17 is connected to the horizontal screw 16 through a coupling to form a horizontal moving platform, and the servo motor A 5 is driven by a gear and a chain to cooperate with the longitudinal screw 6 to form a longitudinal moving platform. The longitudinal moving platform is fixed to the base 18 through a bracket 19, the horizontal moving platform cooperates with the longitudinal moving platform through the horizontal screw 16 and the slider, and the micro-vibration platform 7 is fixedly connected to the horizontal moving platform.

[0027] The present invention utilizes punching and micro-vibration to achieve shelling and peeling of deep-grained walnuts, thereby solving the problem of difficulty in artificial shelling and shelling of deep-grained walnuts, improving the shelling and shelling efficiency of walnuts and the integrity of kernels, so as to achieve the purpose of reducing the labor cost of obtaining kernels, effectively increasing the economic benefits of crops such as walnuts, and promoting the development of the walnut processing industry.

[0028] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A micro-vibration walnut shelling and peeling device, characterized in that: The invention comprises a conveying mechanism, a vibrating shelling device and a screening and collecting mechanism, wherein the conveying mechanism comprises a conveyor belt support, wherein the conveyor belt support is provided with a plurality of conveyor belts for transporting walnuts in parallel, and the vibrating shelling device comprises a micro-vibration platform (7) and a fixed pressure head (9) located above the micro-vibration platform (7), wherein the micro-vibration platform (7) is provided with a lower groove connected to the conveyor belt, and the fixed pressure head (9) is provided with an upper groove at a position corresponding to the lower groove, wherein the corresponding lower groove and the upper groove constitute a walnut shelling channel, and the other side of the shelling channel is connected to the screening and collecting mechanism.

2. A micro-vibration walnut shelling and peeling device according to claim 1, characterized in that: A vibration drive mechanism is provided below the micro-vibration platform (7), the vibration drive mechanism comprising a base (18), a longitudinal screw rod (6) and a servo motor A (5) for driving the longitudinal screw rod (6) are provided on the base (18), a mounting platform (30) is horizontally mounted on the slider of the longitudinal screw rod (6), one side of the mounting platform (30) is slidably connected to a bracket (19) vertically mounted on the base (18), a horizontal screw rod (16) and a servo motor B (17) for driving the horizontal screw rod (16) are provided on the mounting platform (30), and the micro-vibration platform (7) is mounted on the slider on the horizontal screw rod (16).

3. A micro-vibration walnut shelling and peeling device according to claim 2, characterized in that: A box body (8) is also provided on one side of the base (18), and the top of the box body (8) is connected to the fixed pressure head (9) via a connecting rod (11), and the fixed pressure head (9) is arranged directly above the micro-vibration platform (7).

4. A micro-vibration walnut shelling and peeling device according to claim 1, characterized in that: The screening and collecting mechanism comprises a screen (12) connected to the lower channel, a storage rack (14) is provided on the other side of the screen (12), and a collection box (13) connected to the screen (12) is provided above the storage rack (14).

5. A micro-vibration walnut shelling and peeling device according to claim 1, characterized in that: An upward arc groove is provided at the entrance of the upper groove, and fixed pressure head diamonds (23) are provided on both side edges of the arc groove. Micro-vibration platform diamonds (10) are also provided at the position of the fixed pressure head diamonds (23) corresponding to the lower groove.

6. A micro-vibration walnut shelling and peeling device according to claim 1, characterized in that: A buffer point is provided on the lower groove, the buffer point comprising a protrusion and a hole for placing the protrusion, the bottom of the protrusion is limited by the notch of the hole, and a spring (15) is provided between the bottom of the protrusion and the bottom of the hole for pushing the upper part of the protrusion out of the hole.

7. A micro-vibration walnut shelling and peeling device according to claim 6, characterized in that: The buffer point is arranged at 5-10 cm from the entrance of the lower channel.

8. The micro-vibration walnut shelling and peeling device according to claim 1, characterized in that: The micro-vibration platform (7) is arranged to be inclined in water, with the side close to the conveying mechanism being higher than the side close to the vibration shelling device.

9. A micro-vibration walnut shelling and peeling device according to claim 1, characterized in that: The conveyor belt support is provided with three conveyor belts, which are respectively used for conveying walnuts of different sizes.

10. A method for using a micro-vibration walnut shelling and peeling device, characterized in that: The specific steps include: Step a, the walnuts pass through the sorting mechanism and enter the first conveyor belt, the second conveyor belt and the third conveyor belt of the corresponding size, and are transported to the entrance of each groove of the micro-vibration platform, and stay at the entrance for a short time under the action of the convex points; Step b, servo motor A receives the PLC instruction to drive the screw to rotate, so that the micro-vibration platform rises. At this time, the grooves under the micro-vibration platform, the walnut and the grooves on the fixed pressure head are in contact. Diamond particles are welded on the edges of each groove of the micro-vibration platform to increase the local stress of the walnut during shock and pressure. At the same time, servo motor B receives the PLC instruction to drive the horizontal screw to realize the horizontal movement of the micro-vibration platform for a certain distance. When the walnut is squeezed, there is a horizontal force that adds a torsion to the walnut shell, thereby generating internal stress that destroys the shell, and the walnut shock and shell breaking action is completed; Step c, the servo motor A receives the PLC instruction to drive the longitudinal screw rod to realize the micro-vibration platform to descend a certain distance. The servo motor A periodically rotates forward and reversely according to the PLC instruction to realize the up and down vibration of the micro-vibration platform. The amplitude of the vibration can be controlled by adjusting the period of the signal. In this way, the micro-vibration platform forms continuous vibration and small-amplitude extrusion and other actions. The convex points of each groove are pressed down, and the walnut passes the convex point position and continues to descend along the slope. During the descent of the walnut, the micro-vibration platform continues to vibrate and squeeze, which can not only realize shell breaking but also gradually separate the walnut shell from the walnut kernel, and the walnut kernel and the walnut shell roll down to the exit of each groove of the micro-vibration platform; Step d, walnut shells and walnut kernels slide to the outlet screen, the screen is connected to the micro-vibration platform, further vibrates synchronously and sieves off the walnut shells, and finally the walnut kernels are recycled into the collection box. Then, servo motor A receives the PLC command, stops forward and reverse rotation, and the micro-vibration platform stops vibrating. Servo motor A and servo motor B receive the PLC command to drive the longitudinal screw and horizontal screw respectively to control the micro-vibration platform to return to the original position, and the working process ends.

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