A walnut shelling device and a shelling method

Abstract

The application discloses a walnut shell breaking device and a shell breaking method, which comprise a rack, a clamping assembly, a drilling assembly, a positioning and detecting assembly and a controller, the telescopic end of an electric telescopic part one is fixed with a driving machine one; the detecting end of a pressure sensor is fixed with a mounting seat, a connecting shaft is arranged on the mounting seat; one clamping part is respectively fixed on the output rotating shaft of the driving machine one and the connecting shaft; the telescopic end of an electric telescopic part two is fixed with an electric telescopic part three, two driving machines two are respectively fixed with the two telescopic ends of the electric telescopic part three, and a drill bit is fixed on the output rotating shaft of the driving machine two; the telescopic end of an electric telescopic part four is fixed with an electric telescopic part five, a tray is fixed with the telescopic end of the electric telescopic part five; the detecting end of a proximity sensor and the detecting end of a distance measuring sensor can be aligned with the walnuts on the tray. The shell breaking device is simple and reliable in structure, the shell breaking method is reasonable, the walnuts on the tray can be reliably clamped, drilled and extruded and broken, and the walnut kernel damage rate is low.

Description

Technical Field

[0001] This invention relates to the field of walnut processing equipment, and more specifically to a walnut shell-breaking device and method. Background Technology

[0002] In recent years, the market demand for walnut kernels has been increasing, and the integrity of the kernels, i.e., the half-kernel rate, directly affects the selling price of walnut kernels. However, the current methods of shelling and kernel extraction, such as striking, squeezing, rolling, centrifuging, and shearing, have the drawbacks of insufficient shelling, low half-kernel yield, and the generation of a large number of broken kernels. The half-kernel rate of walnut kernels obtained by conventional shelling methods is generally between 30% and 40%. Even though some shelling devices that use rolling methods can improve the shelling rate, they employ strict size grading measures for walnuts, which is not conducive to practical production applications.

[0003] Therefore, how to provide a walnut shell-breaking device and method that can overcome the above-mentioned problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a walnut shell-cracking device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A walnut shell-cracking device, comprising:

[0007] frame;

[0008] A clamping assembly includes an electric telescopic component, a drive motor, a pressure sensor, a mounting base, a connecting shaft, and clamping members. The electric telescopic component is mounted on the frame. The drive motor is fixed to the horizontal telescopic end of the electric telescopic component, and the axial length direction of the output shaft of the drive motor is the same as the telescopic direction of the horizontal telescopic end of the electric telescopic component. The pressure sensor is fixed on the frame, and the mounting base is fixed to the detection end of the pressure sensor. The mounting base rotatably supports a connecting shaft, the axial length direction of which is the same as the detection direction of the pressure sensor. The connecting shaft is coaxially arranged with the output shaft of the drive motor. Two clamping members are provided, each fixed to the output shaft of the drive motor and the connecting shaft. The two clamping members can clamp a walnut, and the suture line of the walnut can be arranged along the axial length direction of the connecting shaft.

[0009] A drilling assembly includes a second electric telescopic component, a third electric telescopic component, a second drive motor, and a drill bit. The second electric telescopic component is mounted on the frame, and the telescopic direction of its horizontal telescopic end is the same as the axial length direction of the connecting shaft. The third electric telescopic component is fixed to the horizontal telescopic end of the second electric telescopic component. The third electric telescopic component has two opposing horizontal telescopic ends, and the telescopic direction of its horizontal telescopic end is perpendicular to the axial length direction of the connecting shaft. Two second drive motors are provided, each fixed to one of the two horizontal telescopic ends of the third electric telescopic component. The axis of the output shaft of the second drive motor is perpendicular to the axis of the connecting shaft. Each output shaft of the second drive motor has a drill bit coaxially fixed to it, and the two drill bits are coaxially arranged, with the walnut object positioned between the two drill bits.

[0010] The positioning and detection assembly includes an electric telescopic component four, an electric telescopic component five, a tray, a proximity sensor, and a distance sensor. The electric telescopic component four is mounted on the frame, and the electric telescopic component five is fixed to the vertical telescopic end of the electric telescopic component four. The telescopic direction of the horizontal telescopic end of the electric telescopic component five is perpendicular to the axial length direction of the connecting shaft. The tray is fixed to the horizontal telescopic end of the electric telescopic component five. The tray is horizontally arranged and its upper surface has a limiting groove adapted to the outer contour of the walnut, allowing the walnut to be embedded in the limiting groove. The proximity sensor is fixed on the frame, and its detection end can be aligned with the walnut located on the tray. The distance sensor is fixed to a drive motor two, and its detection end can be aligned with the walnut located on the tray. Two clamping components and two drill bits can simultaneously contact the outer wall of the walnut.

[0011] The controller, the first electric telescopic component, the first drive motor, the pressure sensor, the second electric telescopic component, the third electric telescopic component, the second drive motor, the fourth electric telescopic component, the fifth electric telescopic component, the proximity sensor, and the distance sensor are all electrically connected to the controller.

[0012] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a walnut cracking device. In the clamping assembly of the present invention, the first electric telescopic component can drive the first drive motor to move. The clamping components on the output shaft and the connecting shaft of the first drive motor can reliably clamp the walnut. Simultaneously, when the first drive motor rotates, it can also drive the walnut clamped by the two clamping components to rotate. The mounting base is fixedly connected to the detection end of the pressure sensor, and the pressure sensor can accurately measure the pressure on the walnut. The second electric telescopic component can drive the third electric telescopic component to move, and the third electric telescopic component can drive the two second drive motors equipped with drill bits to move, located on the two sides of the clamped walnut. The two drill bits on the side can drill holes in the walnuts simultaneously; drilling holes in the walnut shells helps with subsequent shell cracking; the electric telescopic component four drives the electric telescopic component five, which in turn drives the tray; through the combined actions of the electric telescopic components four and five, the walnuts on the tray can be positioned between the two clamping components; the proximity sensor can detect whether the walnuts are positioned correctly, i.e., whether they are positioned between the two clamping components; the distance sensor can measure both the outer diameter of the walnuts and the position of the suture line; this shell-cracking device has a simple and reliable structure and can effectively clamp, drill, and crush walnuts.

[0013] Preferably, the centerline of the output shaft of the first drive motor, the centerline of the connecting shaft, and the centerlines of the output shafts of the two second drive motors together define a horizontal plane. The two clamping members can reliably clamp the walnut, and the two drill bits can reliably drill holes in the walnut.

[0014] Preferably, both the first and second electric telescopic components are electric slides, with the support seats of both components fixed to the frame. The support seat of the first component is located above the support seat of the second component, and the first drive motor is fixed to the slider on the first electric telescopic component. The third electric telescopic component is an electric forward and reverse threaded bidirectional screw slide, with the support seat of the third electric telescopic component fixed to the slider on the second electric telescopic component. Each of the two second drive motors is fixed to one of the two sliders on the third electric telescopic component. The fourth and fifth electric telescopic components are telescopic cylinders. All electric telescopic components—first, second, third, fourth, and fifth—can operate reliably.

[0015] Preferably, the clamping member is cylindrical and has a limiting groove at one end. Each of the two clamping members is coaxially fixed to the output shaft and the connecting shaft of the drive motor, and both ends of the walnut can be fitted into the two limiting grooves. After the tray beneath the walnut is removed, the walnut will not come out from between the two clamping members.

[0016] Preferably, the positioning and detection assembly further includes a connecting frame, one end of which is fixed to the horizontal telescopic end of the electric telescopic component five, and the other end of which is fixed to the tray; the proximity sensor has a vertically arranged detection end, and the limiting groove can be located directly below the proximity sensor. The tray and the horizontal telescopic end of the electric telescopic component five can be reliably connected; the walnuts can be stably arranged laterally on the tray, and the proximity sensor can accurately determine whether there are walnuts on the tray.

[0017] Preferably, the device further includes a guide component, which is fixed to the support base of the electric telescopic component three. The guide component has a guide groove arranged at an angle relative to the horizontal plane, located below the clamping components and centrally positioned between the two clamping components. The lower end of the guide groove is located outside the frame, allowing the walnuts clamped by the two clamping components to fall into the guide groove. Crushed walnuts can also fall into the guide groove and be transferred outside the frame.

[0018] A method for cracking walnuts, the method is as follows:

[0019] ① Place the walnut into the limiting groove, ensuring that the length direction of the walnut is the same as the axial length direction of the connecting shaft; then the electric telescopic component four and the electric telescopic component five move in the forward direction, so that the tray containing the walnut moves between the two clamping components, and the two ends of the walnut can be aligned with the two clamping components; the proximity sensor detects whether the walnut is placed in place;

[0020] ② The electric telescopic component one drives the drive motor one to feed forward for the first time, so that the two clamping components together clamp the walnuts located on the tray. Subsequently, the electric telescopic component four and the electric telescopic component five move in opposite directions, so that the tray is moved away from under the walnuts.

[0021] ③ The electric telescopic component drives the drive motor to feed forward for the second time, and the two clamping components further clamp the walnut, and obtain the long axis data of the walnut; the long axis data of the walnut includes the pressure value of the walnut measured by the pressure sensor at this time and the length of the walnut;

[0022] ④ The drive motor drives the walnut to rotate multiple times and then stops. During the rotation of the walnut, the distance sensor can detect the position of the suture line of the walnut and the outer diameter of the walnut's cross section. When the drive motor stops, the plane defined by the suture line on the walnut is perpendicular to the axis of the drill bit.

[0023] ⑤ The operation of the second and third electric telescopic components, the first drive motor, and the two second drive motors causes the two drill bits to simultaneously drill multiple holes in the shell of the walnut. The multiple holes drilled by the same drill bit are arranged sequentially along the length of the walnut. The line connecting the centers of the multiple holes drilled by the same drill bit is inclined relative to the seam line of the walnut. During the drilling process, when the pressure value of the pressure sensor changes suddenly, the drill bit stops drilling the walnut, and the two drill bits move in opposite directions, disengaging from the walnut.

[0024] ⑥ The electric telescopic component drives the drive motor to feed forward for the third time. At the same time, the drive motor drives the walnut to rotate, that is, to rotate and squeeze the walnut.

[0025] ⑦ In step ⑥, when the pressure value of the pressure sensor reaches 50% of the theoretical shell-breaking force of the walnut, the first electric telescopic component drives the first drive motor to feed in segments multiple times. That is, the first drive motor feeds forward a certain distance in a single step and then stops. After the pressure sensor measures the pressure value, the first drive motor will feed again. When the pressure value of the pressure sensor is almost constant or the forward feed stroke of the first drive motor in this step reaches a certain value, it is determined that the walnut has been crushed and broken. Then the first drive motor stops rotating, the first electric telescopic component and the second electric telescopic component reset, and the broken walnut will fall between the two clamping components.

[0026] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a method for cracking walnuts. It can achieve the following technical effects:

[0027] This invention discloses a walnut shell-breaking device and method. The walnut can be effectively clamped, and the clamped walnut can be drilled with a drill bit. The center line of multiple holes drilled by the same drill bit is arranged at an angle relative to the suture line. This drilling method is beneficial for the subsequent shell-breaking of the walnut. This shell-breaking method can effectively crack the walnut, and the shell-breaking effect of the walnut is good. The drill bit will not damage the walnut kernel during the feeding process, and the walnut kernel damage rate is low. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1This is an overall isometric drawing of a walnut shell-cracking device and method.

[0030] Figure 2 This is a front view of a walnut shell-cracking device and method.

[0031] Figure 3 A partial isometric view of a walnut shell-cracking device and method. Figure 1 ;

[0032] Figure 4 A partial isometric view of a walnut shell-cracking device and method. Figure 2 .

[0033] In the diagram:

[0034] 1 is the frame, 2 is the electric telescopic component one, 3 is the drive motor one, 4 is the pressure sensor, 5 is the mounting base, 6 is the connecting shaft, 7 is the clamping component, 70 is the limiting groove, 8 is the electric telescopic component two, 9 is the electric telescopic component three, 10 is the drive motor two, 11 is the drill bit, 12 is the electric telescopic component four, 13 is the electric telescopic component five, 14 is the tray, 140 is the limiting groove, 15 is the proximity sensor, 16 is the distance sensor, 17 is the connecting frame, and 18 is the material guide. Detailed Implementation

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The electric telescopic component 2 in the clamping assembly of the present invention can drive the drive motor 3 to move. The clamping component 7 on the output shaft of the drive motor 3 and the clamping component 7 on the connecting shaft 6 can reliably clamp the walnut. At the same time, when the drive motor 3 rotates, it can also drive the walnut clamped by the two clamping components 7 to rotate. The mounting base 5 is fixedly connected to the detection end of the pressure sensor 4. The pressure sensor 4 can accurately measure the pressure on the walnut.

[0037] Electric telescopic component 2 8 can drive electric telescopic component 3 9 to move, and electric telescopic component 3 9 can drive two drive motors 2 10 equipped with drill bits 11 to move. The two drill bits 11 located on both sides of the clamped walnut can drill holes in the walnut simultaneously. Drilling holes in the walnut shell helps to break the walnut shell later.

[0038] Electric telescopic component 4 12 can drive electric telescopic component 5 13 to move, and electric telescopic component 5 13 can drive tray 14 to move. Through the combined action of electric telescopic component 4 12 and electric telescopic component 5 13, the walnuts on tray 14 can be arranged between the two clamping components 7.

[0039] The proximity sensor 15 can detect whether the walnut is placed in place, that is, whether the walnut is placed between the two clamping parts 7;

[0040] The ranging sensor 16 can measure the outer diameter of the walnut on the one hand, and the position of the suture line of the walnut on the other hand.

[0041] This application also discloses a method for cracking walnuts using the aforementioned shell-cracking device; the walnuts can be effectively clamped, and the clamped walnuts can be drilled by the drill bit 11. The center line connecting the multiple holes drilled by the same drill bit 11 is arranged at an angle relative to the suture line. This drilling method is beneficial for the subsequent cracking of the walnuts; this shell-cracking method can effectively crack the walnuts, the shell-cracking effect of the walnuts is good, the drill bit 11 will not damage the walnut kernel during the feeding process, and the walnut kernel damage rate is low.

[0042] Example

[0043] See appendix Figure 1-4 This is a schematic diagram of the overall and partial structure of one embodiment of the present invention. Specifically, the present invention discloses a walnut shell-cracking device, comprising:

[0044] Frame 1 is a rectangular frame, which is assembled from multiple aluminum profiles;

[0045] The clamping assembly includes an electric telescopic component 2, a drive motor 3, a pressure sensor 4, a mounting base 5, a connecting shaft 6, and a clamping component 7.

[0046] The electric telescopic component 2 is installed on the frame 1, and the electric telescopic component 2 is located at the inner top of the frame 1;

[0047] The drive motor 3 is fixed to the horizontal telescopic end of the electric telescopic component 2. The drive motor 3 is a servo motor. The electric telescopic component 2 can drive the drive motor 3 to move. The axial length direction of the output shaft of the drive motor 3 is the same as the telescopic direction of the horizontal telescopic end of the electric telescopic component 2.

[0048] Pressure sensor 4 is fixed on frame 1, and pressure sensor 4 is located inside frame 1;

[0049] Mounting base 5 is fixed to the detection end of pressure sensor 4. A connecting shaft 6 is rotatably supported on mounting base 5. The axial length direction of connecting shaft 6 is the same as the detection direction of pressure sensor 4. Connecting shaft 6 is coaxially arranged with the output shaft of drive motor 3.

[0050] Two clamping members 7 are provided, each fixed to the output shaft of the drive motor 3 and the connecting shaft 6. The two clamping members 7 can clamp the walnut, and the walnut's stitching can be arranged along the axial length of the connecting shaft 6. The electric telescopic member 2 drives the drive motor 3 to move. When the drive motor 3 moves, it drives one of the clamping members 7 connected to it to move. The moving clamping member 7 will press against the walnut, and the walnut will press against the clamping member 7 connected to the connecting shaft 6, thereby applying pressure to the mounting base 5. The pressure sensor 4 will display the pressure value of the walnut.

[0051] The drilling assembly includes an electric telescopic component 2 8, an electric telescopic component 3 9, a drive motor 2 10, and a drill bit 11;

[0052] The electric telescopic component 28 is installed on the frame 1. The electric telescopic component 28 is located at the inner bottom of the frame 1. The telescopic direction of the horizontal telescopic end of the electric telescopic component 28 is the same as the axial length direction of the connecting shaft 6.

[0053] Electric telescopic component 28 is fixed to the horizontal telescopic end of electric telescopic component 39. Electric telescopic component 39 has two horizontal telescopic ends arranged opposite to each other, that is, the two horizontal telescopic ends of electric telescopic component 39 can move synchronously towards or away from each other. The telescopic direction of the horizontal telescopic end of electric telescopic component 39 is perpendicular to the axial length direction of the connecting shaft 6.

[0054] Two drive motors 10 are provided, each fixed to the two horizontal telescopic ends of the electric telescopic component 3 9. The drive motors 10 are servo motors. The axis of the output shaft of the drive motors 10 is perpendicular to the axis of the connecting shaft 6. A drill bit 11 is coaxially fixed on the output shaft of each drive motor 10. The two drill bits 11 are arranged coaxially. The walnut can be limited between the two drill bits 11. When the two drive motors 10 are close to each other, the two drill bits 11 can drill holes in the walnut.

[0055] The positioning and detection components include an electric telescopic component four 12, an electric telescopic component five 13, a tray 14, a proximity sensor 15, and a distance sensor 16.

[0056] Electric telescopic component 4 12 is installed on the frame 1. Electric telescopic component 4 12 is located at the inner bottom of the frame 1. Electric telescopic component 5 13 is fixed to the vertical telescopic end of electric telescopic component 4 12. Electric telescopic component 5 13 is located inside the frame 1. The telescopic direction of the horizontal telescopic end of electric telescopic component 5 13 is perpendicular to the axial length direction of the connecting shaft 6.

[0057] The tray 14 is horizontally arranged and fixed to the horizontal telescopic end of the electric telescopic component 13. Walnuts can be placed on the tray 14. When the walnuts are placed on the tray 14, the electric telescopic component 13 can drive the walnuts to move along the axial length of the connecting shaft 6, so that the walnuts can be centered between the two clamping components 7. The electric telescopic component 12 can drive the electric telescopic component 13 and the walnuts to rise and fall, so that the two ends of the walnuts are aligned with the two clamping components 7 along the axial length of the connecting shaft 6.

[0058] The proximity sensor 15 is fixed to the inner top of the frame 1. The detection direction of the detection end of the proximity sensor 15 is arranged vertically. The detection end of the proximity sensor 15 can be directly opposite the vertical position of the tray 14, that is, the detection end of the proximity sensor 15 can be aligned with the walnuts on the tray 14. The proximity sensor 15 can detect whether there are walnuts on the tray 14.

[0059] The distance sensor 16 is fixed on a drive motor 10. The detection end of the distance sensor 16 can be aligned with the walnut on the tray 14. The detection direction of the detection end of the distance sensor 16 is perpendicular to the axial length direction of the connecting shaft 6. When the drive motor 3 drives the walnut to rotate, the distance sensor 16 can detect the suture line of the walnut. Because the cross-sectional radius of the suture line of the walnut is large, during the rotation of the walnut, the distance sensor 16 detects the relative position of the entire outer circumference of the walnut and selects the position where the distance change is the largest and continuously changes as the suture line.

[0060] The two clamping parts 7 and the two drill bits 11 can contact the outer wall of the walnut at the same time. After the two clamping parts 7 clamp the walnut, the two drill bits 11 can feed synchronously and drill holes in the walnut.

[0061] The controller is mounted on or outside the frame 1. The electric telescopic component 1 2, the drive motor 1 3, the pressure sensor 4, the electric telescopic component 2 8, the electric telescopic component 3 9, the drive motor 2 10, the electric telescopic component 4 12, the electric telescopic component 5 13, the proximity sensor 15, and the distance sensor 16 are all electrically connected to the controller.

[0062] The axis of the output shaft of drive motor 13, the axis of the connecting shaft 6, and the axis of the output shafts of the two drive motors 20 together define a horizontal plane. The two clamping parts 7 can reliably clamp the walnut, and the two drill bits 11 can reliably drill holes in the walnut.

[0063] Both the electric telescopic component 12 and the electric telescopic component 28 are electric slides. Electric slides are existing technology. The electric slide has a support base and a slider that reciprocates along the length of the support base. The support bases of the electric telescopic component 12 and the electric telescopic component 28 are both fixed to the frame 1. The support base of the electric telescopic component 12 is located above the support base of the electric telescopic component 28. The drive motor 13 is fixed to the slider on the electric telescopic component 12.

[0064] Electric telescopic component 39 is an electric forward and reverse thread bidirectional screw slide. Electric forward and reverse thread bidirectional screw slide is existing technology. Electric forward and reverse thread bidirectional screw slide has a support base and two sliders that can move on the support base. The two sliders can move synchronously towards each other or away from each other. The support base of electric telescopic component 39 is fixed to the slider on electric telescopic component 28. The two drive motors 210 are each fixed to the two sliders on electric telescopic component 39.

[0065] Both the electric telescopic component 4.12 and the electric telescopic component 5.13 are telescopic cylinders, which can be electrically driven or pneumatically driven.

[0066] The clamping member 7 is cylindrical and has a limiting groove 70 at one end. The two clamping members 7 are coaxially fixed with the output shaft and connecting shaft 6 of the drive motor 3. The two ends of the walnut can be respectively embedded in the two limiting grooves 70. The end of the walnut can be arranged in the limiting groove 70. When the tray 14 under the walnut is removed, the walnut will not fall between the two clamping members 7.

[0067] More specifically, the positioning and detection components also include a connecting frame 17. One end of the connecting frame 17 is fixed to the horizontal telescopic end of the electric telescopic component 13, and the other end of the connecting frame 17 is fixed to the tray 14. The purpose of the connecting frame 17 is to ensure that the tray 14 is reliably connected to the horizontal telescopic end of the electric telescopic component 13, and that the tray 14 will not interfere with the frame 1, the drive motor 3, and the electric telescopic component 9 when it moves.

[0068] The tray 14 is horizontally arranged and its upper surface is provided with a limiting groove 140 that matches the outer contour of the walnut. The walnut can be embedded in the limiting groove 140. During the movement of the tray 14, the walnut will not fall off the tray 14. At the same time, it ensures that the stitching line of the walnut on the tray 14 is arranged along the axial length of the connecting shaft 6. The limiting groove 140 can be located directly below the proximity sensor 15 to ensure that the walnut in the limiting groove 140 can be aligned with the proximity sensor 15.

[0069] More specifically, it also includes a guide component 18, which is fixed to the support base of the electric telescopic component 9. The guide component 18 is provided with a guide groove that is inclined relative to the horizontal plane. The guide groove is located below the clamping component 7 and is centrally located between the two clamping components 7. The lower end of the guide groove is located outside the frame 1. The walnuts clamped by the two clamping components 7 can fall into the guide groove. The tray 14 can be located above the guide component 18. When the walnuts are clamped, the tray 14 can be moved away from above the guide component 18. After the clamped walnuts are crushed, they can fall vertically into the guide groove. The tray 14 will not obstruct the crushed and falling walnuts.

[0070] A method for cracking walnuts, the method is as follows:

[0071] ① Place the walnuts into the limiting groove 140, ensuring that the length direction of the walnuts is the same as the length direction of the connecting shaft 6; then the electric telescopic component 4 12 and the electric telescopic component 5 13 move in the forward direction, so that the tray 14 containing the walnuts moves between the two clamping components 7, and the two ends of the walnuts can be aligned with the two clamping components 7; the proximity sensor 15 detects whether the walnuts are placed in place.

[0072] ② The electric telescopic component 12 drives the drive motor 13 to feed forward for the first time, so that the two clamping components 7 clamp the walnuts on the tray 14 together. Then, the electric telescopic component 4 12 and the electric telescopic component 5 13 move in opposite directions, so that the tray 14 is moved away from under the walnuts.

[0073] ③ The electric telescopic component 2 drives the drive motor 3 to feed forward for the second time, and the two clamping components 7 further clamp the walnut and obtain the long axis data of the walnut; the long axis data of the walnut here includes the pressure value of the walnut measured by the pressure sensor 4 at this time and the length of the walnut obtained according to the total stroke of the first and second forward feeds of the electric telescopic component 2.

[0074] In this step, the purpose of the electric telescopic component 2 driving the drive motor 3 for the second forward feed is to determine whether the walnut is clamped by the two clamping components 7.

[0075] If the pressure value measured by the pressure sensor 4 gradually increases during the second forward feed of the drive motor 3, it is determined that the walnut is reliably clamped.

[0076] If the pressure value measured by pressure sensor 4 during the second forward feed of drive motor 3 is the same as or similar to the pressure value measured by pressure sensor 4 in step ②, or if the pressure value measured by pressure sensor 4 decreases, it is determined that the walnut may fall, break, or be pinched.

[0077] ④ The drive motor 3 drives the walnut to rotate multiple times and then stops. In this embodiment, the walnut rotates three times and then stops. During the rotation of the walnut, the distance sensor 16 can detect the position of the suture line of the walnut and the outer diameter of the walnut's cross section. When the drive motor 3 stops, the plane defined by the suture line on the walnut is perpendicular to the axis of the drill bit 11.

[0078] ⑤ The operation of electric telescopic component 2 8, electric telescopic component 3 9, drive motor 1 3, and two drive motors 2 10 causes the two drill bits 11 to simultaneously drill multiple holes in the shell of the walnut. The multiple holes drilled by the same drill bit 11 are arranged sequentially along the length of the walnut. The center line connecting the centers of the multiple holes drilled by the same drill bit 11 is arranged at an angle relative to the suture line, or in other words, the center lines of the multiple holes drilled by the same drill bit 11 can jointly define a plane, which has an angle with the plane defined by a suture line on the walnut. During the process of the drill bit 11 drilling the walnut, when the pressure value of the pressure sensor 4 changes suddenly, the drill bit 11 stops drilling the walnut, and the two drill bits 11 move in opposite directions, and the drill bit 11 disengages from the walnut.

[0079] For drilling holes, the shell thickness of walnuts of the same variety is within a certain range. At the same time, there is a nearly constant gap between the inner wall of the walnut shell and the kernel. In addition, the distance sensor 16 is always working during the drilling process. Therefore, the drilling depth of the drill bit 11 is controllable and the drill bit 11 will not damage the kernel.

[0080] The hole in this application can be a blind hole or a through hole, that is, the drill bit 11 can drill through the shell of the walnut or not. When the hole is a blind hole, the depth of the hole in this embodiment is about 80% of the thickness of the shell of the walnut. In this way, when the walnut is under pressure, the position of the hole can concentrate stress to facilitate the shell breaking, and can also prevent the drill bit 11 from accidentally damaging the walnut kernel.

[0081] ⑥ The electric telescopic component 2 drives the drive motor 3 to feed forward for the third time. At the same time, the drive motor 3 drives the walnut to rotate, that is, to rotate and squeeze the walnut.

[0082] ⑦ In step ⑥, when the pressure value of the pressure sensor 4 reaches 50% of the theoretical shell-breaking force of the walnut, the electric telescopic component 2 drives the drive motor 3 to start segmented multiple feedings. That is, the drive motor 3 stops after feeding a certain distance in a single forward motion. After the pressure sensor 4 measures the pressure value, the drive motor 3 will feed again. In this embodiment, the stroke of the drive motor 3 in a single feeding is 0.5mm. The speed of the drive motor 3 in the forward feeding in this step is less than the speed of the drive motor 3 in the forward feeding in step ⑥.

[0083] The theoretical shell-breaking force of a walnut is the average value of the shell-breaking pressure obtained by the testers when they manually squeezed and cracked multiple walnuts of the same variety as the one to be cracked. In this embodiment, the theoretical shell-breaking force is the average value of the shell-breaking pressure obtained by the testers when they manually squeezed and cracked 20 walnuts of the same variety as the one to be cracked.

[0084] When the pressure value of pressure sensor 4 remains almost constant or the forward feed stroke of drive motor 3 in step ⑦ reaches a certain value, it is determined that the walnut has been crushed and cracked. Then drive motor 3 stops rotating, electric telescopic component 2 and electric telescopic component 8 reset, and the broken walnut will fall between the two clamping components 7.

[0085] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0086] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A walnut shell-cracking device, characterized in that, include: Rack (1); The clamping assembly includes an electric telescopic component (2), a drive motor (3), a pressure sensor (4), a mounting base (5), a connecting shaft (6), and a clamping component (7). The electric telescopic component (2) is mounted on the frame (1). The drive motor (3) is fixed to the horizontal telescopic end of the electric telescopic component (2), and the axial length direction of the output shaft of the drive motor (3) is the same as the telescopic direction of the horizontal telescopic end of the electric telescopic component (2). The pressure sensor (4) is fixed on the frame (1), and the mounting base (5)... The mounting base (5) is rotatably supported by a connecting shaft (6) fixed to the detection end of the pressure sensor (4). The axial length direction of the connecting shaft (6) is the same as the detection direction of the pressure sensor (4). The connecting shaft (6) is coaxially arranged with the output shaft of the drive motor (3). Two clamping members (7) are provided, each fixed to the output shaft of the drive motor (3) and the connecting shaft (6). The two clamping members (7) can clamp the walnut. The suture line of the walnut can be arranged along the axial length direction of the connecting shaft (6). A drilling assembly, comprising an electric telescopic component two (8), an electric telescopic component three (9), a drive motor two (10), and a drill bit (11), wherein the electric telescopic component two (8) is mounted on the frame (1), and the telescopic direction of the horizontal telescopic end of the electric telescopic component two (8) is the same as the axial length direction of the connecting shaft (6); the electric telescopic component three (9) is fixed to the horizontal telescopic end of the electric telescopic component two (8), and the electric telescopic component three (9) has two horizontally telescopic ends arranged opposite to each other. The telescopic direction of the horizontal telescopic end of the third (9) is perpendicular to the axial length direction of the connecting shaft (6); the second drive motor (10) is provided in two parts and each is fixed to the two horizontal telescopic ends of the electric telescopic component three (9); the axis of the output shaft of the second drive motor (10) is perpendicular to the axis of the connecting shaft (6); each output shaft of the second drive motor (10) is coaxially fixed with a drill bit (11); the two drill bits (11) are coaxially arranged; the walnut can be limited between the two drill bits (11); The positioning and detection components include an electric telescopic component four (12), an electric telescopic component five (13), a tray (14), a proximity sensor (15), and a distance sensor (16). The electric telescopic component four (12) is mounted on the frame (1). The electric telescopic component five (13) is fixed to the vertical telescopic end of the electric telescopic component four (12). The telescopic direction of the horizontal telescopic end of the electric telescopic component five (13) is perpendicular to the axial length direction of the connecting shaft (6). The tray (14) is fixed to the horizontal telescopic end of the electric telescopic component five (13). A horizontally arranged plate with a limiting groove (140) on its upper surface adapted to the outer contour of the walnut, the walnut being able to be embedded in the limiting groove (140); a proximity sensor (15) is fixed on the frame (1), the detection end of the proximity sensor (15) being able to be aligned with the walnut located on the tray (14); a distance sensor (16) is fixed on a second drive motor (10), the detection end of the distance sensor (16) being able to be aligned with the walnut located on the tray (14); two clamping members (7) and two drill bits (11) can simultaneously contact the outer wall of the walnut; The controller is electrically connected to the electric telescopic component one (2), the drive motor one (3), the pressure sensor (4), the electric telescopic component two (8), the electric telescopic component three (9), the drive motor two (10), the electric telescopic component four (12), the electric telescopic component five (13), the proximity sensor (15), and the distance sensor (16).

2. The walnut shell-cracking device according to claim 1, characterized in that, The centerline of the output shaft of the first drive (3), the centerline of the connecting shaft (6), and the centerlines of the output shafts of the two second drive (10) together define a horizontal plane.

3. The walnut shell-cracking device according to claim 1, characterized in that, Both the electric telescopic component one (2) and the electric telescopic component two (8) are electric slides. The support bases of the electric telescopic component one (2) and the electric telescopic component two (8) are fixed to the frame (1). The support base of the electric telescopic component one (2) is located above the support base of the electric telescopic component two (8). The drive motor one (3) is fixed to the slider on the electric telescopic component one (2). The electric telescopic component three (9) is an electric forward and reverse thread bidirectional screw slide. The support base of the electric telescopic component three (9) is fixed to the slider on the electric telescopic component two (8). The two drive motors two (10) are each fixed to the two sliders on the electric telescopic component three (9). The electric telescopic component four (12) and the electric telescopic component five (13) are telescopic cylinders.

4. The walnut shell-cracking device according to claim 1, characterized in that, The clamping member (7) is cylindrical and has a limiting groove (70) at one end. The two clamping members (7) are coaxially fixed with the output shaft of the drive motor (3) and the connecting shaft (6). The two ends of the walnut can be respectively embedded in the two limiting grooves (70).

5. A walnut shell-cracking device according to claim 1, characterized in that, The positioning and detection components also include a connecting frame (17), one end of which is fixed to the horizontal telescopic end of the electric telescopic component five (13), and the other end of which is fixed to the tray (14); the proximity sensor (15) is arranged vertically at the detection end, and the limiting groove (140) can be located directly below the proximity sensor (15).

6. A walnut shell-cracking device according to claim 2, characterized in that, It also includes a guide component (18), which is fixed to the support seat of the electric telescopic component three (9). The guide component (18) is provided with a guide groove that is inclined relative to the horizontal plane. The guide groove is located below the clamping component (7). The guide groove is centrally arranged between the two clamping components (7). The lower end of the guide groove is located outside the frame (1). The walnuts clamped by the two clamping components (7) can fall into the guide groove.

7. A method for cracking walnut shells, characterized in that, The walnut shell-cracking device according to any one of claims 1-6 is used in the following method: ① Place the walnut into the limiting groove 140, ensuring that the length direction of the walnut is the same as the axial length direction of the connecting shaft 6; then the electric telescopic component four 12 and the electric telescopic component five 13 move in the forward direction, causing the tray 14 containing the walnut to move between the two clamping components 7, and the two ends of the walnut can be aligned with the two clamping components 7; the proximity sensor 15 detects whether the walnut is placed in place; ② The electric telescopic component 2 drives the drive motor 3 to feed forward for the first time, so that the two clamping components 7 clamp the walnut located on the tray 14 together. Then, the electric telescopic component 4 12 and the electric telescopic component 5 13 move in opposite directions, so that the tray 14 is moved away from under the walnut. ③ The electric telescopic component 2 drives the drive motor 3 to feed forward for the second time, and the two clamping components 7 further clamp the walnut and obtain the long axis data of the walnut; the long axis data of the walnut includes the pressure value of the walnut at this time measured by the pressure sensor 4 and the length of the walnut; ④ The drive motor 3 drives the walnut to rotate multiple times and then stops. During the rotation of the walnut, the distance sensor 16 can detect the position of the suture line of the walnut and the outer diameter of the walnut's cross section. When the drive motor 3 stops, the plane defined by the suture line on the walnut is perpendicular to the axis of the drill bit 11. ⑤ The electric telescopic component 2 8, the electric telescopic component 3 9, the drive motor 1 3, and the two drive motors 2 10 operate to cause the two drill bits 11 to simultaneously drill multiple holes in the shell of the walnut. The multiple holes drilled by the same drill bit 11 are arranged sequentially along the length of the walnut. The line connecting the centers of the multiple holes drilled by the same drill bit 11 is inclined relative to the seam line of the walnut. During the process of the drill bit 11 drilling the walnut, when the pressure value of the pressure sensor 4 changes suddenly, the drill bit 11 stops drilling the walnut, and the two drill bits 11 move in opposite directions, and the drill bit 11 disengages from the walnut. ⑥ The electric telescopic component 2 drives the drive motor 3 to feed forward for the third time. At the same time, the drive motor 3 drives the walnut to rotate, that is, to rotate and squeeze the walnut. ⑦ In step ⑥, when the pressure value of the pressure sensor 4 reaches 50% of the theoretical shell-breaking force of the walnut, the electric telescopic component 2 drives the drive motor 3 to start segmented multiple feeds. That is, the drive motor 3 stops after feeding a certain distance in a single forward motion. After the pressure sensor 4 measures the pressure value, the drive motor 3 will start the next feed. When the pressure value of the pressure sensor 4 is almost constant or the forward feed stroke of the drive motor 3 in this step reaches a certain value, it is determined that the walnut has been crushed and broken. Then the drive motor 3 stops rotating, the electric telescopic component 2 and the electric telescopic component 8 reset, and the broken walnut will fall between the two clamping components 7.

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