Rice falling plate for cutting rice on outer side of rice passing hole, brown rice processing machine comprising rice falling plate and capable of identifying embryo ends of brown rice grains one by one, and control method of brown rice processing machine

Abstract

The invention discloses a rice falling plate for cutting rice on the outer side of a rice passing hole, a brown rice processing machine comprising the rice falling plate and capable of recognizing embryo ends of brown rice grains one by one and a control method of the brown rice processing machine, and relates to the field of germ-remaining rice processing. The problems that a cutter groove is prone to breakage, and the embryo containing integrity rate of a cut tip section cannot meet the requirement are solved. Rice passing holes communicated with the rice containing groove are formed in the left side wall and the right side wall, in the length direction of the rice containing groove, of the rice falling plate respectively, rice dividing holes are formed in the left side and the right side, penetrating through the rice falling plate in the thickness direction, of the outer sides of the rice passing holes respectively, the rice passing holes are columnar holes, and the diameter of the cross section of each rice passing hole is larger than the maximum diameter of the cross section of brown rice grains; the knife rest assembly is located on the portion, above the outer side of the rice passing hole, of the upper plate body, the upper plate body is fixedly installed on the rack and is in sliding fit with the rotating rice falling plate, rice grains are pushed by power to move and penetrate through the rice passing hole, then the rice grains are limited by the knife rest assembly to abut against the groove, and the rice grains are cut off at the edge of the outer side of the rice passing hole in an equal-length mode. The method is used for processing the germ-remaining rice.

Description

Technical Field

[0001] The present invention relates to the field of processing embryo-retained rice, and in particular to a rice dropping plate for cutting rice outside a rice through hole, a brown rice processing machine comprising the rice dropping plate and capable of identifying the embryo end of brown rice grains one by one, and a control method of the brown rice processing machine. The brown rice processing machine is used for identifying the embryo end of brown rice grains one by one, cutting off the embryo end of the brown rice outside a rice loading trough and collecting the two ends respectively. Background Art

[0002] The publication number is CN119205676A, and the patent name is an invention patent for a method for identifying the embryo end of brown rice grains and a method and a separation device for separating the embryo end of brown rice grains from whole brown rice grains. It specifically discloses a separation device for brown rice grains with an embryo end. A plurality of rice loading troughs are processed on a rice falling plate. The rice falling bin is installed above the rice falling plate. The rice falling plate is slidably installed on the rice-supporting plate. A light-transmitting sheet is embedded in the rice-supporting plate. The light source and the image recognition system are respectively located above and below the light-transmitting sheet, or the light source and the image recognition system are respectively located below and above the light-transmitting sheet; when the brown rice grains loaded in the rice loading trough pass through the light-transmitting sheet during the sliding process of the rice dropping plate, the image recognition system takes pictures and identifies whether the brown rice grain embryo is at the left end or the right end of the brown rice. The image recognition system determines which end the embryo is located at, and controls the pneumatic unit to blow / suck the tip of the brown rice grain with the embryo end into the ventilation groove at one end of the rice loading trough in the length direction. The cutter assembly located above the rice dropping plate cuts off the tip of the brown rice grain with the embryo, and the embryo tip segment and the non-embryo segment fall into the separation port of the rice-dropping plate and are collected separately.

[0003] Although the above patent solves the problem of identifying the embryo end of brown rice, cutting off the embryo end and collecting the embryo segment and the non-embryo segment separately, a cutting groove needs to be opened in the rice loading groove of the rice falling plate, and the cutting knife needs to be inserted into the cutting groove, as shown in the patent. Figure 1 As shown in , a rice-dropping board of this structure needs to reserve a groove bottom plate with a thickness of 0.4-1mm at the bottom of the cutting groove. The reason is: if the rice groove of the rice-dropping board is deep, two grains of brown rice can be placed in the rice groove in the vertical direction, which will make it impossible to cut both grains of brown rice at the same time. This is determined by the natural growth of brown rice. If the rice-dropping board can only hold one grain of brown rice and can cut the brown rice, the cutting groove bottom plate will be the thinnest part of the rice-dropping board. This will lead to a big problem that the rice-dropping board is easy to break at the knife groove after long-term use.

[0004] In addition, because the length of each grain of rice within the same batch of rice varies by approximately 2 mm, there are still variations in the thickness of the rice within the same batch. Ignoring this variation can also lead to adverse consequences. The existing rice cutting method involves cutting rice within a cutting groove on a rice drop plate, located within the rice trough. However, extensive long-term testing has revealed that the length and thickness of unpolished rice within the same batch vary. Therefore, the lengths of the rice tips inserted into the vents within the rice trough will also vary, resulting in uneven lengths of the cut tips. This can result in the tip segments containing the embryo not being completely intact, and the cut tip segments not meeting the required integrity. The patent's proposed separation device, which does not allow the cutter assembly to move up and down to accommodate the design of the vents at both ends of the rice trough along its length, is the fundamental reason for not being able to evenly cut off the intact embryo tips.

[0005] In addition, in order to ensure the recognition effect, the recognition algorithm developed by this patent is also relatively complex, which reduces the recognition efficiency to a certain extent. Moreover, since the recognition algorithm is relatively complex, it requires hardware with relatively high computing power to support it, which increases the hardware requirements and increases the equipment cost.

[0006] In summary, the existing separation device for the embryo end of brown rice grains has the problems that the cutting groove is prone to breakage and the embryo integrity rate of the cutting tip after cutting does not meet the requirements. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems that the existing separation device for the embryo end of brown rice grains is prone to breakage at the cutting groove and the embryo integrity rate of the cutting tip section after cutting does not meet the requirements, and further provide a rice falling plate for cutting rice outside the rice through hole, a brown rice processing machine including the rice falling plate and capable of identifying the embryo end of brown rice grains one by one, and a control method for the brown rice processing machine.

[0008] The technical solution of the present invention is: The present invention provides a rice dropping plate for cutting rice outside a rice through hole. The rice dropping plate is provided with a plurality of rice filling grooves, which are all through holes in a direction perpendicular to the thickness of the plate body. The extension line of each rice filling groove in the length direction passes through the center of the circle of the plate body. The rice dropping plate is provided with a rice through hole connected to the rice filling groove on the left and right side walls along the length direction of the rice filling groove, respectively. The rice through hole is a columnar hole and the diameter of the cross section of the rice through hole is larger than the maximum diameter of the cross section of the brown rice grain. A decimeter hole is provided on the left side of the left end and the right side of the right end of the rice through hole, respectively, penetrating through the thickness direction of the rice dropping plate.

[0009] Furthermore, the upper end surface of the decimeter hole is lower than the lowest point of the through-meter hole.

[0010] Furthermore, a downwardly concave arc bottom surface is processed on the bottom of the rice trough and transitions to a rice hole.

[0011] The present invention also provides a brown rice processing machine which includes a rice dropping plate for cutting rice outside a rice through hole and can identify the embryo end of brown rice grains one by one. The machine comprises a rice dropping plate and a frame, wherein the rice dropping plate is rotatably mounted on the frame; the machine also comprises an upper plate body, a brown rice grain embryo end identification unit, a lower plate body and a knife holder assembly; the upper plate body and the lower plate body are fixedly mounted on the frame and are respectively located on the upper and lower end surfaces of the rotating rice dropping plate; the knife holder assembly is mounted on the upper plate body in an upward and downward floating manner, and the blades of the knife holder assembly are respectively abutted against the positions of the circular motion tangents of the left side outside the left end and the right side outside the right end of the rice through hole; the brown rice grain embryo end identification unit is embedded in the mounting hole of the upper plate body to detect whether the upper embryo of the rice grain in the rice loading trough is located on the left or right side, and sends a corresponding command to move the rice grains in the rice loading trough under the push of power and pass through the rice through hole, and the tip of the brown rice embryo that passes through the rice through hole is in the rotating rice dropping plate and touches the blade on the knife holder assembly and is cut off.

[0012] Furthermore, it also includes a lifting device, the telescopic section of the lifting device telescopically moves along the thickness direction of the upper plate body and passes through the knife holder mounting hole on the upper plate body and is connected to the knife holder assembly. The initial position of the knife holder assembly is in a retracted state and is embedded in the groove at the bottom of the upper plate body. When cutting rice, the lifting device extends and falls to the outside of the rice hole on the rice falling plate.

[0013] Furthermore, an arc-shaped boss bar is processed on the lower plate body, and the boss bar is located directly below the rice drop bin area in the upper plate body; a light strip mounting groove is processed on the lower plate body, and the light strip is installed in the light strip mounting groove.

[0014] Furthermore, it also includes a turntable, the outer ring of the turntable is connected to the lower plate body, the inner ring of the turntable is connected to the rice falling plate, and the outer ring and the inner ring of the turntable are connected through rolling bodies.

[0015] Preferably, there are two knife holder assemblies, which are arranged in a mirror image on the left and right sides relative to the rice trough, and each knife holder assembly is driven by a lifting device respectively; wherein, the knife holder assembly is an arc-shaped knife holder plate body, and a groove is provided at the lower part of the arc-shaped knife holder plate body, and the blade is installed on one side of the groove in the width direction, and the blade is opened to face the direction of the movement of rice grains; a gap is left between the blade and the side wall of the groove in the width direction.

[0016] Furthermore, the process of identifying the embryo end recognition unit of the brown rice grain includes the following steps: Step 1: Convert the collected transmission image of the brown rice grain into a binary image; Step 2: Use the threshold segmentation algorithm to segment the image and obtain the brown rice grain area; Step 3: Divide the brown rice grain area into two parts along the length direction of the brown rice grain, record them as the left and right parts, and count the pixel values ​​and distribution of the pixel points in the left and right parts to determine whether the brown rice grain has a germ end.

[0017] The present invention also provides a control method for a brown rice processing machine, which comprises the following steps: 1. Control the driving device to drive the rice dropping plate to rotate. When the rice loading trough of the rice dropping plate rotates to the rice dropping area on the upper plate body, rice is loaded into the rice loading trough of the rice dropping plate through the rice dropping area of ​​the upper plate body. The rice dropping area on the upper plate body is an area corresponding to the rice loading through hole on the upper plate body that is connected to the rice dropping bin; Second, when the rice loading trough loaded with brown rice grains on the rice falling plate rotates to the mounting hole position of the brown rice grain embryo end identification unit, under the illumination environment of the light strip on the light strip installation slot, the brown rice grain embryo end identification unit takes a picture of the brown rice grain and identifies the embryo end; and according to the identified embryo end, a command is sent to the lifting device to control the knife holder assembly close to the embryo end side to move downward, and the side knife holder assembly blocks the air outlet of the side fan; 3. The fan on the non-germ end side blows the rice grains toward the knife holder assembly blocking the air outlet side, and presses against the groove of the knife holder assembly; when the rice falling plate continues to rotate to the blade, the germ end of the brown rice grains is cut off by the blade and falls directly into the rice separation hole for separation and collection; 4. While the germ end of the brown rice grain is being cut off by the blade, the rice falling plate continues to rotate, and the brown rice grain germ end identification unit identifies the next brown rice grain. If the germ end of the next brown rice grain is on the same side as the germ end of the previously cut brown rice grain, both knife holder assemblies do not move, that is, the current state is maintained, and the germ end of the next brown rice grain is cut off; if the germ end of the next brown rice grain is not on the same side as the germ end of the previously cut brown rice grain, after the non-germ end of the previous brown rice grain passes through the air outlet that was not blocked when cutting the brown rice grains, the knife holder assembly that was previously cutting is controlled to lift up, and at the same time, the knife holder assembly on the other side is controlled to move downward, and the germ end of the next brown rice grain is cut off.

[0018] Compared with the prior art, the present invention has the following effects: The present invention is provided with a knife holder assembly 6 on the upper plate body 3. The knife holder assembly 6 is controlled by a lifting device to achieve floating lifting of the curved knife holder plate body in the vertical direction. After the floating lifting knife holder assembly 6 identifies the embryo end of the brown rice grain according to the embryo end identification unit 9, the knife holder assembly 6 corresponding to the end falls to the outside of the rice hole 4, acting as a windbreak. At this time, the brown rice grain slides in the rice loading trough 2 under the impetus of pneumatic power until the embryo end of the brown rice grain abuts the side wall of the groove 6-1 of the curved knife holder plate body, ensuring that the cut embryo end is of equal length. The length of the cut embryo end is determined by the length between the blade and the groove 6-1, thereby ensuring the embryo integrity rate of the cut embryo end. As the rice dropping plate 1 continues to rotate, the brown rice grain is cut off when passing through the blade 6-3 and separated by the decimeter hole 5.

[0019] The present invention has an installation hole 11 on the upper plate body 3, which can be used to install the brown rice grain embryo end identification unit 9, so that the rice falling plate 1 can load the rice grains into the rice loading trough 2 through the rice falling bin, and then identify the embryo end through the brown rice grain embryo end identification unit 9, which saves space and can quickly cut rice.

[0020] The driving force for the rice grains of the present invention is pneumatic power, specifically, two oppositely arranged fans installed on the upper plate 3 blow against each other and keep blowing continuously, and no control device is added to the fans.

[0021] The arc-shaped knife holder plate of the present invention integrates the functions of rice blocking and knife holder, and can ensure that the rice is cut into equal lengths and quickly.

[0022] The present invention has a light strip mounting groove 13 processed on the lower plate 12, and the brown rice is illuminated by the light strip, and then the camera on the brown rice grain embryo end identification unit 9 takes a picture and the embryo end is identified by algorithm, thereby improving the identification efficiency.

[0023] 6. The present invention features a raised platform 14 on the lower plate 12. When the rice drop plate 1 rotates to the rice drop bin area on the upper plate 3, the raised platform 14 lies below the rice troughs within the rice loading holes, ensuring that only a single grain of rice is placed in each trough. A rice cleaning hole 17 is also provided on the lower plate 12 to remove any remaining rice grains from the troughs, thereby minimizing the efficiency of secondary rice loading.

[0024] 7. The present invention is provided with a turntable 16, which can reduce the hard friction between the lower plate body 12 and the rice falling plate 1.

[0025] 8. The rice cutting action of the present invention occurs outside the rice loading trough 2, which solves the problem that the crossbeam between the two knife grooves in the rice loading trough on the existing rice dropping board is easy to break.

[0026] 9. The fan of the original machine needs to be controlled to start and stop, while the fan of the existing machine can ventilate throughout the whole process. By controlling the up and down movement of the arc-shaped tool holder plate, the ventilation of the corresponding vent in the rice hole can be blocked or released, eliminating the airflow control device.

[0027] 10. The rice hole 4 of the present invention is a cylindrical hole with a cross-sectional diameter larger than the maximum diameter of the cross-sectional diameter of the brown rice grain. It can clamp the thickest part of the cross-sectional area of ​​the rice grain. Compared with the technology of clamping the rice tip, it not only ensures the stability of the rice, but also ensures that the rice is cut into equal lengths, thus ensuring the integrity of the embryo contained in the tip of the rice.

[0028] 11. The present invention also adopts a simpler recognition algorithm to realize the recognition of the embryo end of the brown rice grain, and can also meet the recognition effect; it also greatly simplifies the complexity of the algorithm, improves the recognition efficiency, and then reduces the time delay caused by the recognition efficiency, thereby improving the accuracy of the control; in addition, it can also greatly reduce the demand for hardware computing power accuracy, thereby reducing hardware costs.

[0029] 12. In addition to being able to achieve equal-length cutting of the embryo end, the present invention can also minimize the number of movements of the tool holder assembly, which not only reduces energy consumption but also extends the service life of the components. In addition, this control method can reduce the impact of the baffle resetting action time, thereby ensuring control efficiency and control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the assembly of the present invention after removing the upper plate 3; Figure 2 yes Figure 1 Bottom view of Figure 3 yes Figure 2 Cross-sectional view along AA; Figure 4 yes Figure 1 The main view; Figure 5 It is a longitudinal sectional view of the rice falling plate 1; Figure 6 is a top view of the upper plate 3; Figure 7 3D structural diagram of the lower plate 12; Figure 8 It is a schematic diagram of the three-dimensional structure of the present invention as a whole after removing the upper plate and the lifting device; Figure 9 It is a schematic structural diagram of two tool holder assemblies 6; Figure 10 It is a schematic diagram of the external structure of the present invention; Figure 11 This is a top view of the turntable; Figure 12 It is the main view of the curved tool holder plate.

[0031] Among them: 1. Rice falling plate, 2. Rice loading trough, 3. Upper plate, 4. Rice hole, 5. Meter hole, 6. Knife holder assembly, 8. Arc-shaped bottom surface, 9. Brown rice grain embryo end identification unit, 10. Knife holder mounting hole, 11. Mounting hole, 12. Lower plate, 13. Light strip mounting slot, 14. Boss bar, 15. Rice falling bin area, 16. Turntable, 17. Rice cleaning hole, 18. First fan mounting hole, 19. Second fan mounting hole, 20. Third fan mounting hole, 21. Fourth fan mounting hole, 22. Frame, 23. Outer ring, 24. Inner ring, 25. Rolling element. DETAILED DESCRIPTION

[0032] Specific implementation method 1: Combination Figures 1 to 12The present embodiment is described. In the present embodiment, a rice dropping plate for cutting rice outside a rice hole is provided with a plurality of rice loading grooves 2 on the rice dropping plate 1. The plurality of rice loading grooves 2 are through holes perpendicular to the thickness direction of the plate body. The extension line of the length direction of each rice loading groove 2 passes through the center of the circle of the plate body 1. A rice hole 4 communicating with the rice trough 2 is respectively opened on the left and right side walls of the rice falling plate 1 along the length direction of the rice loading trough 2. The rice hole 4 is a cylindrical hole and the diameter of its cross section is larger than the maximum diameter of the cross section of the brown rice grains; a decimeter hole 5 is respectively opened on the left side of the left end and the right side of the right end of the rice hole 4 through the thickness direction of the rice falling plate 1.

[0033] In actual use, the plurality of rice troughs 2 can be blind holes perpendicular to the thickness of the plate. A separation hole is provided downwardly at the bottom of the rice hole 4. The distance from the center point of the cross section of the decimeter hole 5 and the separation hole to the edge of the hole is greater than half the maximum side length or half the diagonal length of the brown rice falling section.

[0034] Specific implementation method 2: Combination Figure 5 To illustrate this embodiment, the upper end surface of the decimeter hole 5 of this embodiment is lower than the lowest point of the meter hole 4.

[0035] This arrangement facilitates the collection of the embryo end of the rice grains after the embryo end is cut off and the rice grains fall directly from the rice separation hole 5. The other components and connection relationships are the same as those in the first embodiment.

[0036] Specific implementation method three: Combination Figure 5 To illustrate this embodiment, the bottom of the rice trough 2 of this embodiment is processed with a downwardly concave arc bottom surface 8 and transitions to the rice hole 4.

[0037] Such arrangement facilitates the accurate blowing of rice grains into the rice hole 4 under the impetus of power, thus avoiding the rice stuck problem. Other components and connection relationships are the same as those of the first or second embodiment.

[0038] Specific implementation method four: Combination Figure 1 This embodiment is described. This embodiment includes a rice dropping plate 1 and a frame 22. The rice dropping plate 1 is provided with a plurality of rice loading grooves 2, and the plurality of rice loading grooves 2 are through holes perpendicular to the thickness direction of the plate body. The rice dropping plate 1 is rotatably mounted on the frame 22, and the extension line of the length direction of each rice loading groove 2 passes through the center of the circle of the plate body 1. It also includes an upper plate body 3, a brown rice grain embryo end identification unit 9, a lower plate body 12, a lifting device and a knife holder assembly 6; a rice hole 4 connected to the rice loading trough 2 is respectively opened on the left and right side walls of the rice falling plate 1 along the length direction of the rice loading trough 2, and the rice hole 4 is a cylindrical hole and the diameter of its cross section is larger than the maximum diameter of the cross section of the brown rice grain; a decimeter hole 5 is respectively opened on the left side and the right side of the left end of the rice hole 4 through the thickness direction of the rice falling plate 1; the upper plate body 3 and the lower plate body 12 are fixedly mounted on the frame 22 and are respectively located on the upper and lower end surfaces of the rotating rice falling plate 1; the knife holder assembly 6 is floatingly mounted on the upper plate body 3, and the blade 6-2 of the knife holder assembly 6 is respectively abutted against the ring outside the left end and the right end of the rice hole 4. The brown rice grain embryo end identification unit 9 is embedded in the mounting hole 11 of the upper plate 3 to detect whether the upper embryo of the rice grain in the rice trough 2 is on the left or right side. The unit then sends a corresponding command to move the rice grain in the rice trough 2 under power and pass through the rice hole 4. The tip of the brown rice embryo that passes through the rice hole 4 is placed in the rotating rice dropping plate 1 and touches the blade 6-2 on the knife holder assembly 6, thereby being cut off. The telescopic section of the lifting device telescopes along the thickness direction of the upper plate 3 and passes through the knife holder mounting hole 10 in the upper plate 3 before connecting to the knife holder assembly 6. The knife holder assembly 6 is initially retracted and embedded in the groove at the bottom of the upper plate 3. During rice cutting, the lifting device extends and falls outside the rice hole 4 on the rice dropping plate 1. This facilitates the selection of which knife holder assembly 6 to float according to actual needs.

[0039] In this embodiment, a total of four fan mounting holes are provided on the upper plate body 3, namely the first fan mounting hole 18, the second fan mounting hole 19, the third fan mounting hole 20 and the fourth fan mounting hole 21. A fan is installed in each of the first fan mounting hole 18, the second fan mounting hole 19, the third fan mounting hole 20 and the fourth fan mounting hole 21, and the four fans blow air continuously and uninterruptedly; the first fan mounting hole 18 and the second fan mounting hole 19 are arranged opposite to each other, and the air outlets of the fans on the first fan mounting hole 18 and the second fan mounting hole 19 are arranged opposite to each other, forming counter-blowing; the third fan mounting hole 20 and the fourth fan mounting hole 21 are opened in sequence in a clockwise direction, and the air outlets of the fans on the third fan mounting hole 20 and the fourth fan mounting hole 21 are arranged opposite to each other.

[0040] In this embodiment, the knife holder assembly 6 can play a role similar to that of a baffle. The baffle can be installed on the rice falling plate 1 through a lifting device after identifying the embryo end according to whether rice cutting is required. The knife holder assembly 6 serves to limit the brown rice after it extends out of the rice hole 4.

[0041] In this embodiment, any distance from the center point of the hole cross section of the decimeter hole 5 to the hole edge is greater than half of the maximum side length or half of the diagonal length of the brown rice grain falling section entity.

[0042] The brown rice grain embryo end identification unit 9 of this embodiment determines whether the brown rice grain has an embryo end by photographing and image recognition. The specific recognition process of the brown rice grain embryo end identification unit 9 for identifying the brown rice grain image can be performed using a recognition method based on deep learning technology or a recognition method based on morphological features, such as that described in patent document CN119205676A. To further reduce hardware costs, in some embodiments, a simpler recognition algorithm can be used to identify the transmission image of the brown rice grain. The specific process is as follows: S101. Convert the collected brown rice grain transmission image into a binary image. This process helps to highlight the rice embryo region. By selecting an appropriate threshold, the brown rice grain region is clearly distinguished from the background.

[0043] S102: Using a histogram equalization method to perform light correction on the image, balance the image brightness, and make the features of the rice germ area more prominent.

[0044] S103. Segment the image after light correction using a segmentation algorithm. In this embodiment, the threshold segmentation function in OpenMV is used to segment the image to obtain the brown rice grain area.

[0045] S104, dividing the brown rice grain region into two parts along the length direction of the brown rice grain, recorded as the left and right parts, and counting the pixel values ​​and distribution of the pixel points of the left and right parts of the embryo to determine whether the brown rice grain has an embryo end.

[0046] Since the lower plate of this embodiment is located on the lower end surface of the rotating rice falling plate, and the lower plate is processed with an arc-shaped boss bar, the rice falling plate and the lower plate are matched through the boss bar, and the lower plate is processed with a light strip mounting groove, and the light strip is installed in the light strip mounting groove, this is conducive to the image details being displayed more clearly when collecting the transmission image, which makes the image information easier to capture, so this embodiment can adopt a simpler recognition algorithm and still achieve the required recognition effect, and the recognition accuracy of the embryo end can reach more than 90%. Compared with CN119205676A, the recognition algorithm of this embodiment has been greatly simplified, thereby improving the recognition efficiency, and can effectively reduce the time delay caused by the recognition efficiency, thereby improving the accuracy of the control; in addition, this can also greatly reduce the demand for hardware computing power, thereby reducing hardware costs.

[0047] As a preferred embodiment, the lifting device in this embodiment comprises a cylinder assembly and an air pump assembly, the air passage of the air pump assembly communicating with the air passage of the cylinder assembly; the lower ends of the piston rods of the two cylinder assemblies are respectively fixedly connected to the tool holder assembly 6. This structure is simple and easy to implement. The identification unit 9, upon recognition of the germinated end of the unpolished rice grain, can promptly control the floating of the tool holder assembly 6, facilitating coordination with the rice cutting operation.

[0048] Specific implementation method five: Combination Figure 7 To illustrate this embodiment, an arc-shaped boss strip 14 is processed on the lower plate body 12 of this embodiment, and the boss strip 14 is located directly below the rice drop bin area 15 in the upper plate body 3.

[0049] Thus, the boss strip 14 plays a role in fine-tuning the depth of the rice trough during the rice filling process, ensuring that only one grain of rice is loaded into the rice trough at a time. The other components and connection relationships are the same as any one of the specific embodiments 1 to 4.

[0050] As a preferred implementation, the height of the boss strip 14 is 1-3 mm, and the optimal height is 2 mm, which not only ensures that the rice trough can hold one grain of rice, but also ensures that the upper part of the rice trough does not interfere with the lower end surface of the upper plate.

[0051] Specific implementation method six: combination Figure 7 To explain this embodiment, the lower plate 12 of this embodiment is machined with a light strip mounting groove 13, into which the light strip is installed. This arrangement provides light from below to the rice grains, facilitating the imaging and identification of the rice grains. This ensures clearer images of the rice grains after imaging, making it easier to identify the end with the embryo. The remaining components and connections are the same as those in any of the first through fifth embodiments.

[0052] Specific implementation method seven: combination Figure 1 、 Figure 3 and Figure 4 This embodiment further includes a turntable 16, an outer ring 23 of the turntable 16 being connected to the lower plate 12, an inner ring 24 of the turntable 16 being connected to the rice dropping plate 1, and the outer ring 23 and the inner ring 24 of the turntable 16 being connected via rolling elements 25. The remaining components and connection relationships are the same as those of any one of the first to sixth embodiments.

[0053] The turntable 16 of this embodiment mainly serves to reduce the hard friction between the rice falling plate and other matching components during the rotation process.

[0054] Specific implementation method eight: combination Figures 8 and 9 To illustrate this embodiment, there are two knife holder assemblies 6 in this embodiment, which are arranged in a mirror image with respect to the rice trough 2, and each knife holder assembly 6 is driven by a lifting device; Among them, the tool holder assembly 6 is an arc-shaped tool holder plate, and a groove 6-1 is provided at the lower part of the arc-shaped tool holder plate. The blade 6-2 is installed on one side of the width direction of the groove 6-1, and the blade 6-3 is opened in the direction facing the movement of the rice grains; there is a gap between the blade 6-3 and the side wall of the groove 6-1 in the width direction.

[0055] In this configuration, the arc-shaped blade holder plate is actually a special-shaped part that integrates the function of a rice grain baffle and also integrates a blade 6-2 to achieve uniform length cutting of rice grains. The other components and connection relationships are the same as any one of the specific embodiments 1 to 7.

[0056] " blade 6-3 leaves a gap from the width direction of groove 6-1 sidewall " in the present embodiment is used to determine the embryo end length that is cut off. If there is not this gap, embryo may be cut into.

[0057] Specific implementation method nine: combination Figures 1 to 12 The control process of the present invention and the working principle of the embryo rice processing machine are described as follows: Rice loading process: Control the driving device to drive the rice dropping plate to rotate. When the rice loading groove of the rice dropping plate 1 rotates to the rice dropping area on the upper plate 3, rice is loaded into the rice loading groove of the rice dropping plate through the rice dropping area of ​​the upper plate. At this time, the boss bar on the lower plate is located in the rice dropping bin area, pushing the rice grains upward to ensure that only one grain of rice is loaded at a time. The rice dropping area on the upper plate body 3 is an area on the upper plate body corresponding to the rice loading through hole communicated with the rice dropping bin.

[0058] Identification process: When the rice loading trough on the rice falling plate is loaded with brown rice grains, it rotates to the mounting hole position of the brown rice grain embryo end identification unit 9, and under the illumination of the light strip on the light strip mounting groove, the brown rice grain embryo end identification unit takes pictures of the brown rice grains and identifies the embryo end.

[0059] The baffle is in place: after the brown rice grain germ end recognition unit identifies which side the germ end is on, it sends a command to the lifting device to move the knife holder assembly close to the germ end downward. At this time, the side knife holder assembly blocks the air outlet of the side fan.

[0060] Rice grains are in place: The fan on the non-germ side blows the rice grains toward the knife holder assembly that blocks the air outlet and presses against the groove of the knife holder assembly.

[0061] Rice cutting is complete: When the rice drop plate continues to rotate to blade 6-2, the embryo ends are cut by blade 6-3 and fall directly into the rice separation hole for separation and collection. After passing through the knife holder assembly, the non-embryo ends may fall into the rice separation hole on the other side. If the non-embryo ends do not fall from the rice separation hole on the other side, when they move to the rice cleaning hole, they fall directly under the action of the wind from the third or fourth fan, achieving rice cleaning.

[0062] Baffle reset: in the process of the embryo end being cut off by the blade 6-3, the rice falling plate continues to rotate and the identification process continues, that is, the embryo end identification unit of the brown rice grain identifies the embryo end of the next brown rice grain. If the embryo end of the next brown rice grain is on the same side as the embryo end of the previously cut brown rice grain, the two tool holder assemblies do not move, that is, the current state is maintained, and the embryo end of the next brown rice grain is cut off; if the embryo end of the next brown rice grain is not on the same side as the embryo end of the previously cut brown rice grain, after the non-germ end of the previous brown rice grain passes through the air outlet that was not blocked when cutting the brown rice grain, the tool holder assembly that was previously cutting is controlled to lift up, and the tool holder assembly on the other side is controlled to move downward at the same time.

[0063] Compared to CN119205676A, the present invention utilizes a single-sided motion of the tool holder assembly to control the wind at both ends of the brown rice grain, achieving movement control of the brown rice grain. Furthermore, the tool holder assembly's motion and structure enable the present invention to achieve equal length cutting of the embryo end. Furthermore, this embodiment minimizes the number of tool holder assembly movements, reducing energy consumption and extending component life. Furthermore, this control method reduces the impact of the baffle's resetting motion time, thereby ensuring efficient and minimal control difficulty.

[0064] Of course, in other embodiments, after the embryo end of the current brown rice grain is cut off, the knife holder assembly corresponding to that side can be directly reset; after waiting for the embryo end recognition unit to recognize the next brown rice grain, the knife holder assembly on the side corresponding to the embryo end of the next brown rice grain can be driven to move according to the recognition result, that is, the baffle is put into place, and the next brown rice grain is cut to achieve the cutting of the embryo end of the next brown rice grain.

[0065] A control method for a brown rice processing machine of the present invention comprises the following steps: 1. Control the driving device to drive the rice dropping plate to rotate. When the rice loading groove of the rice dropping plate 1 rotates to the rice dropping area on the upper plate body 3, rice is loaded into the rice loading groove of the rice dropping plate through the rice dropping area of ​​the upper plate body; the rice dropping area on the upper plate body 3 is the area corresponding to the rice loading through hole on the upper plate body that is connected to the rice dropping bin; Second, when the rice loading trough filled with brown rice grains on the rice falling plate rotates to the mounting hole position of the brown rice grain embryo end identification unit 9, under the illumination environment of the light strip on the light strip installation groove, the brown rice grain embryo end identification unit takes a picture of the brown rice grain and identifies the embryo end; and sends a command to the lifting device according to the identified embryo end, controlling the knife holder assembly close to the embryo end side to move downward, and the side knife holder assembly blocks the air outlet of the side fan; 3. The fan on the non-germ end side blows the rice grains toward the knife holder assembly blocking the air outlet side and against the groove of the knife holder assembly; when the rice falling plate 1 continues to rotate to the blade 6-2, the germ end of the brown rice grains is cut off by the blade 6-3 and falls directly into the meter separation hole for separation and collection; 4. While the embryo end of the next brown rice grain is being cut off by the blade 6-3, the rice falling plate continues to rotate, and the brown rice grain embryo end identification unit identifies the next brown rice grain. If the embryo end of the next brown rice grain is on the same side as the embryo end of the previously cut brown rice grain, both knife holder assemblies do not move, i.e., they maintain the current state, and the embryo end of the next brown rice grain is cut off; if the embryo end of the next brown rice grain is not on the same side as the embryo end of the previously cut brown rice grain, after the non-germ end of the previous brown rice grain passes through the air outlet that was not blocked when cutting the brown rice grains, the knife holder assembly that was previously cutting is controlled to lift, and at the same time, the knife holder assembly on the other side is controlled to move downward, and the embryo end of the next brown rice grain is cut off.

Claims

1. A rice cutting plate for cutting rice outside a rice hole, wherein a plurality of rice loading grooves (2) are provided on the rice cutting plate (1), characterized in that: The plurality of rice troughs (2) are all through holes in a direction perpendicular to the thickness of the plate body, and the extension line of the length direction of each rice trough (2) passes through the center of the plate body (1); A rice hole (4) communicating with the rice loading trough (2) is respectively provided on the left and right side walls of the rice dropping plate (1) along the length direction of the rice loading trough (2). The rice hole (4) is a columnar hole and the diameter of its cross section is larger than the maximum diameter of the cross section of the brown rice grain. A decimeter hole (5) is respectively provided on the left side of the left end and the right side of the right end of the rice hole (4) and penetrating through the thickness direction of the rice dropping plate (1).

2. The rice cutting plate for cutting rice outside the rice hole according to claim 1, characterized in that: The upper end surface of the decimeter hole (5) is lower than the lowest point of the meter hole (4).

3. The rice cutting plate for cutting rice outside the rice hole according to claim 1, characterized in that: The bottom of the rice trough (2) is processed with a downwardly concave arc bottom surface (8) and transitions to the rice hole (4).

4. A brown rice processing machine for identifying the embryo end of brown rice grains one by one, comprising a rice dropping plate (1) and a frame (22), wherein the rice dropping plate (1) is rotatably mounted on the frame (22); Its characteristics are: It also includes an upper plate (3), a brown rice grain embryo end identification unit (9), a lower plate (12), a knife holder assembly (6) and a lifting device; The upper plate body (3) and the lower plate body (12) are fixedly mounted on the frame (22) and are respectively located on the upper and lower end surfaces of the rotating rice dropping plate (1); the blade (6-2) of the knife holder assembly (6) is respectively abutted against the positions of the circular motion tangents of the left outer side of the left end and the right outer side of the right end of the rice through hole (4); the brown rice grain embryo end identification unit (9) is embedded in the mounting hole (11) of the upper plate body (3) to detect whether the upper embryo of the rice grain in the rice loading trough (2) is located on the left or right side, and sends a corresponding command to move the rice grain in the rice loading trough (2) under the driving force and pass through the rice through hole (4); the tip of the brown rice embryo that passes through the rice through hole (4) is in the rotating rice dropping plate (1) and touches the blade (6-2) on the knife holder assembly (6) to be cut off; The telescopic section of the lifting device telescopically moves along the thickness direction of the upper plate body (3) and passes through the knife holder mounting hole (10) on the upper plate body (3) and is connected to the knife holder assembly (6). The initial position of the knife holder assembly (6) is a retracted state and is embedded in the bottom groove of the upper plate body (3). When cutting rice, the lifting device extends and falls to the outside of the rice hole (4) on the rice falling plate (1).

5. The machine for processing brown rice with germ-retained grains according to claim 4, which is characterized in that: The lower plate body (12) is processed with an arc-shaped boss strip (14), and the boss strip (14) is located directly below the rice storage area (15) in the upper plate body (3).

6. The machine for processing brown rice with germ-retained grains according to claim 5, which is characterized in that: A light strip mounting groove (13) is processed on the lower plate body (12), and the light strip is mounted in the light strip mounting groove (13).

7. The brown rice processing machine for identifying the embryo end of each brown rice grain according to claim 6, characterized in that: It also includes a turntable (16), an outer ring (23) of the turntable (16) is connected to the lower plate body (12), an inner ring (24) of the turntable (16) is connected to the rice falling plate (1), and the outer ring (23) and the inner ring (24) of the turntable (16) are connected via a rolling body (25).

8. The brown rice processing machine for identifying the embryo end of each brown rice grain according to claim 7, characterized in that: There are two tool holder assemblies (6), which are arranged in mirror image with respect to the rice trough (2), and each tool holder assembly (6) is driven by a lifting device; The knife holder assembly (6) is an arc-shaped knife holder plate body, a groove (6-1) is provided at the lower portion of the arc-shaped knife holder plate body, a blade (6-2) is mounted on one side of the groove (6-1) in the width direction, and the blade (6-3) is opened in the direction facing the moving direction of the rice grains; a gap is left between the blade (6-3) and the side wall of the groove (6-1) in the width direction.

9. The brown rice processing machine for identifying the embryo end of each brown rice grain according to claim 4, characterized in that: The process of identifying the embryo end recognition unit (9) of brown rice grains includes the following steps: Step 1: Convert the collected transmission image of the brown rice grain into a binary image; Step 2: Use the threshold segmentation algorithm to segment the image and obtain the brown rice grain area; Step 3: Divide the brown rice grain area into two parts along the length direction of the brown rice grain, record them as the left and right parts, and count the pixel values ​​and distribution of the pixel points in the left and right parts to determine whether the brown rice grain has a germ end.

10. A control method for a brown rice processing machine, characterized in that: It includes the following steps:

1. The control driving device drives the rice dropping plate to rotate. When the rice loading groove of the rice dropping plate (1) rotates to the rice dropping area on the upper plate body (3), rice is loaded into the rice loading groove of the rice dropping plate through the rice dropping area of ​​the upper plate body; the rice dropping area on the upper plate body (3) is an area corresponding to the rice loading through hole opened on the upper plate body and communicating with the rice dropping bin; 2. When the rice loading trough on the rice falling plate is rotated to the mounting hole position of the brown rice grain embryo end identification unit (9), the brown rice grain embryo end identification unit takes a picture of the brown rice grain and identifies the embryo end under the illumination of the light strip on the light strip installation slot; and sends a command to the lifting device according to the identified embryo end, controlling the knife holder assembly on the side of the embryo end to move downward, and the side knife holder assembly blocks the air outlet of the side fan; 3. The fan on the non-germ end side blows the rice grains toward the knife holder assembly blocking the air outlet side and against the groove of the knife holder assembly; when the rice falling plate (1) continues to rotate to the blade (6-2), the germ end of the brown rice grains is cut off by the blade (6-3) and falls directly into the rice separation hole to achieve separation and collection; 4. During the process of the embryo end being cut off by the blade (6-3), the rice falling plate continues to rotate, and the embryo end identification unit of the brown rice grain identifies the next brown rice grain. If the embryo end of the next brown rice grain is on the same side as the embryo end of the previously cut brown rice grain, both knife holder assemblies do not move, that is, maintain the current state, and the embryo end of the next brown rice grain is cut off; if the embryo end of the next brown rice grain is not on the same side as the embryo end of the previously cut brown rice grain, after the non-germ end of the previous brown rice grain passes through the air outlet that was not blocked when the brown rice grain was cut, the knife holder assembly that was previously cutting is controlled to be lifted, and at the same time, the knife holder assembly on the other side is controlled to move downward, and the embryo end of the next brown rice grain is cut off.

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