Colorimetric screening device for pearls

Abstract

The invention discloses a colorimetric screening device for pearls. The colorimetric screening device comprises a rack, wherein the rack is provided with a mounting surface; the sorting disc is rotatably arranged on the mounting surface, and a plurality of accommodating grooves and a plurality of grooves which are formed in the circumferential direction of the sorting disc at intervals are formed in the sorting disc; the feeding module comprises a vibration disc, a feeding pipe, a control rod and a baffle, the feeding pipe is provided with a first end and a second end which are oppositely arranged, the vibration disc is used for conveying pearls to the first end, the second end is located above the sorting disc and is opposite to the containing groove, and the control rod is movably arranged outside the feeding pipe and is opposite to the groove; the baffle is rotatably arranged at the second end and is in transmission connection with the control rod; the control rod is separated from the groove to drive the baffle to close the second end and inserted into the groove to drive the baffle to open the second end; the detection module is used for detecting the pearls in the containing groove and outputting a color sorting signal according to a detection result, and the sorting module responds to the color sorting signal to sort the pearls in the containing groove.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of screening devices, in particular to a pearl color screening device. BACKGROUND

[0002] The pearl color screening device is an automatic equipment for efficiently sorting the color, luster, roundness and surface flaws of pearls by using optical sensing and intelligent image processing technology. It captures the image of pearls through a high-precision camera, analyzes parameters such as color difference, brightness and roundness in real time in combination with algorithms, and classifies and rejects unqualified products through a pneumatic device.

[0003] The existing pearl color screening device is prone to mis-screening and missing screening through batch feeding and screening of a vibrating hopper. SUMMARY

[0004] The present application provides a pearl color screening device to reduce the risk of mis-screening and missing screening of the pearl color screening device.

[0005] The present application provides a pearl color screening device, which includes a rack, a material selection disc, a feeding module, a detection module and a sorting module. The rack has a mounting surface. The material selection disc is rotatably arranged on the mounting surface, and a plurality of accommodating grooves and a plurality of recesses are arranged on the material selection disc. The plurality of accommodating grooves and the plurality of recesses are arranged in a one-to-one correspondence and are arranged in a circumferential direction of the material selection disc. The feeding module includes a vibrating disc, a feeding pipe, a control rod and a baffle. The feeding pipe has a first end and a second end arranged oppositely. The vibrating disc is used to feed pearls to the first end. The second end is located above the material selection disc and is arranged opposite to the accommodating grooves. The control rod is movably arranged outside the feeding pipe and is arranged opposite to the recesses. The baffle is rotatably arranged at the second end and is in transmission connection with the control rod. The control rod is separated from the recesses to drive the baffle to close the second end. The control rod is inserted into the recesses to drive the baffle to open the second end. The detection module and the sorting module are arranged in sequence along the rotation direction of the material selection disc. The detection module is used to detect the pearls in the accommodating grooves and output a color selection signal according to the detection result. The sorting module sorts the pearls in the accommodating grooves in response to the color selection signal.

[0006] Specifically, when the pearls are colorimetrically screened, the pearls are placed in the vibrating disc, the vibrating disc drives the pearls into the first end of the feeding pipe one by one, the selection disc rotates to make any containing groove be located directly below the second end, and the control rod slides into the groove corresponding to the containing groove under the action of its own gravity or the driving force of the feeding module, so that the control rod drives the baffle to open the second end, so that the pearls leave the feeding pipe from the second end and enter the containing groove, during which the selection disc continues to rotate to make the control rod leave the groove, and then drive the baffle to close the second end to limit the pearls from leaving the feeding pipe from the second end, so as to limit the number of pearls falling into the containing groove to one, and then facilitate the detection module to colorimetrically detect the pearls in the containing groove and facilitate the sorting module to sort the pearls in the containing groove.

[0007] In the above technical solution, by setting the control rod and the baffle, the risk of multiple pearls falling into the same containing groove is reduced, thereby reducing the risk of false screening and missing screening of the pearl colorimetric screening device.

[0008] In some embodiments, the baffle includes a baffle body and a first gear, the baffle body is rotatably arranged at the second end, and the first gear is installed at one end of the baffle body, and the outer periphery of the control rod is provided with teeth, and the first gear is engaged with the teeth.

[0009] In the above technical solution, the baffle body is connected with the control rod in transmission through the engagement of the first gear and the teeth, so as to improve the transmission accuracy of the control rod and the baffle compared with the case that the control rod and the baffle are connected in transmission through friction, and reduce the risk of relative sliding of the control rod and the baffle, thereby improving the reliability of the transmission connection of the control rod and the baffle. It is beneficial to further reduce the risk of multiple pearls falling into the same containing groove, thereby further reducing the risk of false screening and missing screening of the pearl colorimetric screening device.

[0010] In some embodiments, the feeding module further includes a spring, the spring is sleeved outside the control rod, and the two ends of the spring are respectively abutted against the feeding pipe and the control rod, and the spring is used to provide an elastic force to the control rod to guide the control rod to insert into the groove.

[0011] In the above technical solution, the spring provides an elastic force to the control rod, so that when the groove is located below the control rod, the control rod can more stably drive the control rod to insert into the groove, thereby reducing the risk that the control rod cannot normally insert into the groove due to the excessive friction force required for the baffle to rotate, so that the pearls cannot fall into the containing groove from the second end, thereby reducing the risk of false screening and missing screening of the pearl colorimetric screening device.

[0012] In some embodiments, the control rod comprises a control rod body and a pulley; the control rod body is movably arranged outside the feeding pipe; the pulley is rotatably arranged at one end of the control rod body facing the selected disc, and the selected disc rotates to drive the pulley to rotate relative to the control rod body.

[0013] In the above technical solution, by arranging the pulley at one end of the control rod body facing the selected disc, on the one hand, the sliding friction between the control rod and the selected disc is converted into the rolling friction between the pulley and the selected disc, thereby reducing the friction force from the control rod that needs to be overcome when the selected disc rotates relative to the rack, improving the stability of the rotation of the selected disc, while reducing the wear of the control rod and prolonging the service life of the control rod; on the other hand, the risk of the selected disc being stuck or the control rod being crushed due to the abutment of the control rod and the groove wall in the circumferential direction of the selected disc is reduced, thereby improving the reliability of the pearl color selection device.

[0014] In some embodiments, the feeding module further comprises a connecting groove, a screw rod, and a first driving motor; the connecting groove is installed on the mounting surface and is used to connect the outlet of the vibration disc and the first end; the screw rod is rotatably arranged at the bottom wall of the connecting groove, and the screw rod rotates to drive the pearls to move towards the first end; the first driving motor is used to drive the screw rod to rotate.

[0015] In the above technical solution, the first driving motor is used to drive the screw rod to rotate, and the pearls move under the drive of the helical blades of the screw rod, thereby facilitating the control of the number of pearls entering the first end through the connecting groove by controlling the opening or closing of the first driving motor, and / or by controlling the rotation speed of the output end of the first driving motor, which is conducive to further reducing the risk of multiple pearls falling into the same accommodating groove when the baffle opens the second end, thereby further reducing the risk of mis-screening and missing screening of the pearl color selection device.

[0016] In some embodiments, the feeding module further comprises a first sensor; the first sensor is installed on the feeding pipe and is electrically connected with the first driving motor; when the control rod switches from being inserted into the groove to being separated from the groove, the first sensor sends a first signal, and the first driving motor receives the first signal to drive the screw rod to rotate one revolution; wherein the lead of the helical blades of the screw rod is D, and the diameter of the pearls is d, and d≤D≤1.5d is satisfied.

[0017] In the above technical solution, by satisfying d≤D≤1.5d, only one pearl is accommodated between adjacent helical blades in the circumferential direction of the screw rod, thereby enabling the screw rod to drive only one pearl to enter the feeding pipe from the first end when the screw rod rotates one revolution, which is conducive to further reducing the risk of multiple pearls falling into the same accommodating groove when the baffle opens the second end, thereby further reducing the risk of mis-screening and missing screening of the pearl color selection device.

[0018] In some embodiments, the pearl color matching and screening device further includes a cleaning module, which includes a sponge roller, a first water pump, a nozzle, a second water pump, and a drying mechanism. The sponge roller is rotatably mounted on the frame, with at least a portion of the sponge roller located within the connecting groove and abutting against the pearl. The first water pump provides cleaning fluid to the sponge roller. The nozzle is disposed in the connecting groove and provides cleaning fluid into the connecting groove to clean the pearl. The second water pump provides the cleaning fluid to the nozzle. The drying mechanism provides gas into the connecting groove. The sponge roller, the nozzle, and the drying mechanism are arranged sequentially from the outlet of the vibrating plate towards the first end.

[0019] In the above technical solution, the sponge roller, nozzle and drying mechanism are arranged in sequence from the outlet of the vibrating plate to the first end, so that the cleaning module can brush, wash and dry the pearls in sequence, thereby reducing the risk of mis-screening caused by stains on the surface of the pearls.

[0020] In some embodiments, the nozzle and the drying mechanism are located above the screw; the cleaning module further includes a second water tank, which is installed on the mounting surface and located below the screw, and is used to collect the cleaning fluid flowing out of the connecting groove, and the second water pump is used to drive the cleaning fluid in the second water tank to move toward the nozzle.

[0021] In the above technical solution, during the rotation of the screw to move the pearl towards the first end, the pearl is partially flipped, positioning the nozzle and drying mechanism above the screw. This facilitates further removal of dirt from the pearl and allows for air drying. Simultaneously, the cleaning fluid flowing out of the connecting tank is collected in the second water tank, and a second water pump drives the cleaning fluid in the second water tank towards the nozzle. This allows for the reuse of the cleaning fluid and reduces the consumption of cleaning fluid by the pearl colorimetric screening device.

[0022] In some embodiments, the detection module includes a plurality of first cameras, wherein the optical axes of any two of the first cameras are not parallel.

[0023] In the above technical solution, the optical axes of any two cameras among the multiple first cameras are not parallel, thereby enabling the multiple first cameras to capture images of pearls from different angles, reducing the risk of misscreening in the pearl color matching and screening device.

[0024] In some embodiments, the detection module further includes a plurality of second cameras and a paddle; the optical axes of any two of the second cameras are not parallel; the paddle has a hinged end and a free end, the hinged end being rotatably mounted on the frame and located above the selection tray, and the free end being used to abut against the pearl in the receiving slot; the plurality of first cameras, the paddle, and the plurality of second cameras are arranged sequentially along the rotation direction of the selection tray.

[0025] In the above technical solution, by setting a lever between multiple first cameras and multiple second cameras, when the receiving groove drives the pearl through the free end of the lever, the free end of the lever can drive the pearl to rotate, thereby facilitating the multiple second cameras to acquire images of other areas of the pearl, further reducing the risk of misscreening in the pearl color matching and screening device.

[0026] In some embodiments, the selection tray is made of a transparent material, and the mounting surface is a pure white matte backlit surface.

[0027] In the above technical solution, by using a transparent material to make the selection tray and setting the mounting surface to a pure white matte backlight, the pearl is driven through multiple first cameras and multiple second cameras in the receiving tank. The pure white matte backlight can be lit up to improve the image acquisition of the edge contour of the pearl by the first and second cameras, further reducing the risk of mis-screening in the pearl color matching and screening device.

[0028] In some embodiments, the pearl color matching and screening device further includes a first air nozzle, which is mounted on the frame and located above the sorting tray along the rotation direction of the sorting tray. The first air nozzle is located between the sorting module and the feeding module and is used to supply gas to the receiving tank to clean the receiving tank.

[0029] In the above technical solution, the receiving tank that will be used to hold the pearl is cleaned by the first air nozzle, so as to reduce the risk of dirt in the receiving tank contaminating the pearl. The structure is simple and easy to implement.

[0030] In some embodiments, the sorting module includes a plurality of second air nozzles and a plurality of collection slots; the plurality of second air nozzles are arranged circumferentially at intervals along the sorting disc, and the second air nozzles respond to the color sorting signal to provide gas to the receiving slot to drive the pearl out of the receiving slot; the plurality of collection slots correspond one-to-one with the plurality of second air nozzles, and the collection slots are used to receive the pearls that have left the receiving slots.

[0031] In the above technical solution, multiple second air nozzles deliver color sorting signals to the receiving tank to provide gas, thereby driving the pearls to leave the receiving tank and be collected by multiple collection tanks. The structure is simple and easy to implement.

[0032] In some embodiments, the pearl color matching and screening device further includes a second drive motor, a second gear, and a third gear; the second drive motor is mounted on the mounting surface; the second gear is mounted on the output end of the second drive motor; and the third gear is mounted on the selection disc and meshes with the second gear.

[0033] In the above technical solution, the second drive motor drives the selection disc to move through the second gear and the third gear, thereby improving the transmission accuracy between the second drive motor and the selection disc. This makes it easier to adjust the rotation speed of the selection disc by controlling the rotation speed of the output end of the second drive motor. This helps to further reduce the risk of multiple pearls falling into the same receiving tank when the second end of the baffle is opened, thereby further reducing the risk of misscreening or missed screening in the pearl color matching and screening device. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A schematic diagram of the structure of a pearl colorimetric screening device provided in some embodiments of this application; Figure 2 A schematic diagram of another pearl colorimetric screening device provided in some embodiments of this application; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is an assembly diagram of the feed tube, control rod, and baffle provided for some embodiments of this application; Figure 5 This is a schematic diagram of the structure of a pearl colorimetric screening device after removing part of the cleaning module, provided in some embodiments of this application, in another direction. Figure 6 for Figure 5 Enlarged view of point D in the middle; Figure 7 for Figure 2 Enlarged view of point B in the middle; Figure 8 A schematic diagram of the structure of another pearl colorimetric screening device provided in some embodiments of this application in another direction; Figure 9 for Figure 8 Enlarged view at point E in the middle; Figure 10 for Figure 2 Enlarged view of point C in the middle; Figure 11 This is an assembly diagram of the material selection disc, the second gear, the third gear, and the second drive motor provided for some embodiments of this application.

[0036] Icons: 100-Pearl color matching and sorting device; 10-Frame; 11-Mounting platform; 111-Mounting surface; 12-Dust cover; 20-Selection tray; 21-Receiving groove; 22-Groove; 221-First guide surface; 23-Third gear; 30-Feeding module; 31-Vibrating plate; 32-Feeding pipe; 32A-First protrusion; 321-First end; 3211-Feed inlet; 322-Second end; 33-Control lever; 33A-Second protrusion; 331-Control lever body; 3311-Tooth; 332-Pulley; 34-Baffle; 341-Baffle body; 3411-Shielding part; 3412-Rotating shaft; 342-First gear; 35-Spring; 36-Limiting plate; 37-First sensor ; 38-Connecting groove; 381-Third infusion tube; 382-Guide groove; 39-Screw; 40-Detection module; 41-First camera; 42-Second camera; 43-Pulse; 44-Bracket; 45-Main unit; 50-Sorting module; 51-Second air nozzle; 52-Connecting tube; 53-Collection tank; 60-Cleaning module; 61-Sponge roller; 611-Rotating wheel; 612-Third drive motor; 613-First infusion tube; 614-First water tank; 62-Second water pump; 621-Second infusion tube; 622-First cover plate; 63-Drying mechanism; 631-Second cover plate; 64-Second water tank; 70-First air nozzle; 80-Second drive motor; 81-Second gear; 200-Pearl. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0039] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0042] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0043] In this application, "multiple" means two or more (including two).

[0044] The pearl color matching and screening device 100 will be described in detail below with reference to the accompanying drawings.

[0045] Please refer to Figure 1 and Figure 2 Please refer to Figure 3 and Figure 4, Figure 1 This is a schematic diagram of the structure of a pearl colorimetric screening device 100 provided in some embodiments of this application. Figure 2 This is a schematic diagram of the structure of another pearl colorimetric screening device 100 provided in some embodiments of this application. Figure 3 for Figure 2 Enlarged view at point A in the middle. Figure 4 This is a schematic diagram of the assembly of the feeding tube 32, control rod 33, and baffle 34 provided in some embodiments of this application. Embodiments of this application provide a pearl color matching and sorting device 100, including a frame 10, a selection tray 20, a feeding module 30, a detection module 40, and a sorting module 50. The frame 10 has a mounting surface 111; the selection tray 20 is rotatably disposed on the mounting surface 111, and the selection tray 20 is provided with a plurality of receiving slots 21 and a plurality of recesses 22, which are arranged at intervals along the circumference of the selection tray 20 in a one-to-one correspondence; the feeding module 30 includes a vibrating plate 31, a feeding tube 32, a control rod 33, and a baffle 34. The feeding tube 32 has a first end 321 and a second end 322 disposed opposite to each other. The vibrating plate 31 is used to feed pearls 200 to the first end 321, and the second end 322 is located above the selection tray 20 and is disposed opposite to the receiving slots 21. The control rod 33 is movably disposed outside the feeding tube 32. The baffle 34 is rotatably mounted on the second end 322 and is connected to the control rod 33 in a transmission manner, opposite to the groove 22. The control rod 33 disengages from the groove 22 to drive the baffle 34 to close the second end 322, and the control rod 33 is inserted into the groove 22 to drive the baffle 34 to open the second end 322. The detection module 40 and the sorting module 50 are arranged in sequence along the rotation direction of the material selection plate 20. The detection module 40 is used to detect the pearls 200 in the receiving tank 21 and outputs a color sorting signal according to the detection result. The sorting module 50 responds to the color sorting signal to sort the pearls 200 in the receiving tank 21.

[0046] The frame 10 is a structural component in the pearl color matching and sorting device 100 used to provide mounting positions for other structural components, in order to support, fix, accommodate and protect other modules.

[0047] Mounting surface 111 is a plane set on the rack 10 to provide a mounting reference for other modules.

[0048] In some embodiments, refer to Figure 1 and Figure 2 The frame 10 includes a mounting platform 11 and a dust cover 12. The mounting surface 111 is the plane of the mounting platform 11 facing away from the ground. The dust cover 12 is fitted over the mounting surface 111 to isolate the outside world and other modules. The dust cover 12 has a control panel. The control panel is electrically connected to the drive components and sensors in each module so that the operator can understand the working status of each module in the dust cover 12 through the control panel.

[0049] In some embodiments, the rack 10 includes only the mounting platform 11.

[0050] The material selection disc 20 is a structural component rotatably mounted on the mounting surface 111. Exemplarily, the material selection disc 20 may be annular or circular. It is understood that the axis of rotation of the material selection disc 20 should be perpendicular to the mounting surface 111. Exemplarily, the material selection disc 20 is rotatably mounted on the mounting surface 111 via bearings.

[0051] The receiving groove 21 is a groove-shaped structure disposed on the side of the material selection tray 20 away from the mounting surface 111. For example, the receiving groove 21 can be hemispherical, conical, or pyramidal, so that after the pearl 200 enters the receiving groove 21, it will move along the groove wall of the receiving groove 21 towards the center of the receiving groove 21, so that the relative positions of the pearls 200 in each receiving groove 21 are the same, thereby facilitating the detection module 40 to collect image information of the pearls 200.

[0052] Understandably, the distance from each receiving trough 21 to the rotation axis of the selection plate 20 should be the same, so that when the selection plate 20 rotates, it can drive the receiving trough 21 to pass under the second end 322 in sequence.

[0053] The vibratory feeder 31 is an automatic feeding device widely used in industrial automation, mainly for the automatic sorting, orientation, and conveying of pearls 200. It utilizes the principle of vibration to neatly arrange and transport the randomly arranged pearls 200 to a designated position.

[0054] The feeding tube 32 is a tubular structure used to guide the pearls 200 provided by the vibratory plate 31 to move upwards onto the selection plate 20.

[0055] The first end 321 is the end of the feed tube 32 used to receive the pearl 200, exemplarily referred to... Figure 4 The first end 321 has an inlet 3211 on its wall that communicates with the inside of the feeding pipe 32, and the pearl 200 enters the feeding pipe 32 through the inlet 3211.

[0056] The second end 322 is the end of the feeding pipe 32 located above the receiving tank 21.

[0057] In some embodiments, the second end 322 is located above the first end 321, the feeding tube 32 is inclined relative to the direction of gravity, and the vibrating plate 31 pushes the pearls 200 into the first end 321 in sequence, so as to push the previous pearl 200 closer to the second end 322 until the pearl 200 falls off the second end 322.

[0058] In some embodiments, the second end 322 is located below the first end 321, and the vibrating disk 31 pushes the pearls 200 into the first end 321 in sequence, and the pearls 200 move towards the second end 322 under their own gravity.

[0059] The groove 22 is a groove-shaped structure provided on the side of the material selection plate 20 away from the mounting surface 111. For example, the groove 22 can be a strip-shaped groove extending circumferentially along the material selection plate 20, so as to increase the time that the control rod 33 is located in the groove 22, thereby increasing the time that the baffle 34 opens the second end 322, thereby reducing the risk that the pearl 200 will not fall out of the feeding tube 32 due to the baffle 34 opening the second end 322 for too short a time.

[0060] Understandably, the distance from each groove 22 to the axis of rotation of the selection plate 20 should be the same, so that when the selection plate 20 rotates, it can drive the grooves 22 to pass under the control rod 33 in sequence.

[0061] In some embodiments, refer to Figure 3 The groove 22 has two groove sidewalls that are arranged opposite each other around the material selection tray 20. On the one hand, it is convenient for one end of the control rod 33 to be smoothly inserted into the groove 22; on the other hand, it is convenient for the control rod 33 to move along the first guide surface 221 to disengage from the groove 22.

[0062] In some embodiments, the control lever 33 is provided with a second guide surface on the side of the detection module 40 along the rotation direction of the material selection disk 20. The second guide surface abuts against the side wall of the groove 22 so that the control lever 33 can disengage from the groove 22.

[0063] The control lever 33 is a structural component in the feeding module 30 used to drive the movement of the baffle 34.

[0064] In some embodiments, the control lever 33 moves in a direction parallel to the rotation axis of the material selection disk 20 and parallel to the direction of gravity.

[0065] "The baffle 34 is connected to the control rod 33 in a transmission manner" means that part of the periphery of the baffle 34 abuts against the periphery of the control rod 33, so that when the control rod 33 moves along its axis, it can drive the baffle 34 to rotate, thereby driving the baffle 34 to open or close the second end 322.

[0066] In some embodiments, a portion of the periphery of the baffle 34 is frosted, and the periphery of the control lever 33 facing the baffle 34 is also frosted, in order to increase the friction between a portion of the periphery of the baffle 34 and the periphery of the control lever 33.

[0067] In some implementations, a portion of the periphery of the baffle 34 is provided with a male or female snap fastener surface of a Velcro clasp, and the side of the control lever 33 facing the periphery of the baffle 34 is provided with a female or male snap fastener surface of a Velcro clasp. This is so that when the control lever 33 switches between inserting into the groove 22 and disengaging from the groove 22, it drives the baffle 34 to close and open the second end 322.

[0068] In some embodiments, refer to Figure 4 The feeding module 30 also includes a limiting plate 36, which is disposed at the second end 322. The limiting plate 36 is in the shape of a "U". An opening is provided on one side of the limiting plate 36. When the baffle 34 opens the second end 322, the baffle 34 blocks the opening of the limiting plate 36, so as to guide the pearl 200 into the receiving groove 21 together with the limiting plate 36, thereby reducing the risk of the pearl 200 popping out of the receiving groove 21. When the baffle 34 closes the second end 322, the baffle 34 enters the limiting plate 36 through the opening to block the second end 322.

[0069] The detection module 40 is a module for collecting images of the pearl 200 within the receiving slot 21. For example, the detection module 40 may include a camera for collecting images of the pearl 200.

[0070] The sorting module 50 is a module that sorts the pearls 200 in accordance with the detection module 40. For example, the sorting module can be a robotic arm.

[0071] Specifically, during the colorimetric sieving of pearls 200, pearls 200 are placed in a vibrating plate 31. The vibrating plate 31 drives the pearls 200 one by one into the first end 321 of the feeding pipe 32. The selection plate 20 rotates so that any receiving slot 21 is directly below the second end 322, and the groove 22 is directly below the control rod 33. The control rod 33 slides into the groove 22 corresponding to the receiving slot 21 under its own weight or the driving force of the feeding module 30, thereby causing the control rod 33 to drive the baffle 34 to open the second end 322. This causes the pearl 200 to leave the feeding tube 32 from the second end 322 and enter the receiving groove 21. During this period, the sorting disc 20 continues to rotate, so that the control rod 33 disengages from the groove 22, thereby driving the baffle 34 to close the second end 322, so as to limit the pearl 200 to leave the feeding tube 32 from the second end 322, thereby limiting the number of pearls 200 falling into the receiving groove 21 to one. This facilitates the detection module 40 to perform color matching on the pearls 200 in the receiving groove 21, and facilitates the sorting module 50 to sort the pearls 200 in the receiving groove 21.

[0072] In this embodiment, by setting the control rod 33 and the baffle 34, the risk of multiple pearls 200 falling into the same receiving tank 21 is reduced, thereby reducing the risk of mis-screening or missed screening by the pearl color comparison and screening device 100.

[0073] Please refer to Figure 3 and Figure 4 According to some embodiments of this application, the baffle 34 includes a baffle body 341 and a first gear 342. The baffle body 341 is rotatably disposed at the second end 322. The first gear 342 is installed at one end of the baffle body 341. The outer periphery of the control rod 33 is provided with teeth 3311, and the first gear 342 meshes with the teeth 3311.

[0074] In some embodiments, please refer to Figure 4 The baffle body 341 includes a rotating shaft 3412 and a blocking part 3411. The rotating shaft 3412 is rotatably disposed at the second end 322. One end of the rotating shaft 3412 is located outside the side of the control lever 33 where the teeth 3311 are provided. The blocking part 3411 protrudes radially from the circumference of the rotating shaft 3412 and is located at the other end of the rotating shaft 3412. The first gear 342 is disposed at the end that rotates close to the control lever 33 and meshes with the teeth 3311.

[0075] Specifically, refer to Figure 4 One end of the control lever 33, under its own weight or the action of other structural components, inserts into the groove 22, thereby driving the first gear 342 to rotate counterclockwise via the teeth 3311, which in turn drives the baffle body 341 to open the second end 322. When one end of the control lever 33 disengages from the groove 22, it can drive the first gear 342 to rotate clockwise via the teeth 3311, which in turn drives the baffle body 341 to close the second end 322.

[0076] In this embodiment, the baffle body 341 achieves a transmission connection with the control rod 33 through the meshing of the first gear 342 and the teeth 3311. This improves the transmission accuracy between the control rod 33 and the baffle 34 compared to a transmission rod connected by friction, and reduces the risk of relative sliding between them, thereby enhancing the reliability of the transmission connection. This further reduces the risk of multiple pearls 200 falling into the same receiving tank 21, thus further reducing the risk of mis-screening or missed screening in the pearl color matching and screening device 100.

[0077] Please refer to Figure 3 and Figure 4 According to some embodiments of this application, the feeding module 30 further includes a spring 35, which is sleeved on the control rod 33. The two ends of the spring 35 abut against the feeding tube 32 and the control rod 33 respectively. The spring 35 is used to provide elastic force to the control rod 33 to guide the control rod 33 into the groove 22.

[0078] In some embodiments, the feed tube 32 includes a first protrusion 32A, which protrudes from the side of the feed tube 32 where the control rod 33 is provided. The side of the control rod 33 away from the feed tube 32 has a second protrusion 33A, which is located at the end of the control rod 33 near the first protrusion 32A. The two ends of the spring 35 abut against the first protrusion 32A and the second protrusion 33A, respectively.

[0079] In some embodiments, the feeding module 30 further includes a guide rod (not shown in the figure), one end of which is disposed on the second protrusion 33A, and the spring 35 is sleeved on the outside of the guide rod. A guide hole is provided on the side of the first protrusion 32A facing the second protrusion 33A, and the other end of the guide rod is inserted into the guide hole.

[0080] In this embodiment, the spring 35 provides elastic force to the control rod 33 so that when the groove 22 is below the control rod 33, the control rod 33 can be driven to insert into the groove 22 more stably. This reduces the risk that the excessive friction force that the baffle 34 needs to overcome during rotation will prevent the control rod 33 from properly inserting into the groove 22, thus preventing the pearl 200 from falling into the receiving groove 21 from the second end 322. This reduces the risk of misscreening or missing pearls in the pearl color matching and screening device 100.

[0081] Please refer to Figure 3 and Figure 4 According to some embodiments of this application, the control lever 33 includes a control lever body 331 and a pulley 332; the control lever body 331 is movably disposed outside the feeding tube 32; the pulley 332 is rotatably disposed at one end of the control lever body 331 facing the material selection plate 20, and the material selection plate 20 rotates to drive the pulley 332 to rotate relative to the control lever body 331.

[0082] For example, the axis of rotation of pulley 332 may be parallel to the radial direction of the turntable.

[0083] Understandably, the groove 22 has a certain width to accommodate the pulley 332.

[0084] In this embodiment, by providing a pulley 332 at the end of the control rod body 331 facing the selection tray 20, on the one hand, the sliding friction between the control rod 33 and the selection tray 20 is converted into rolling friction between the pulley 332 and the selection tray 20, thereby reducing the frictional force from the control rod 33 that the selection tray 20 needs to overcome when rotating relative to the frame 10, improving the stability of the rotation of the selection tray 20, and reducing the wear of the control rod 33, thus extending the service life of the control rod 33; on the other hand, it reduces the risk of the selection tray 20 getting stuck or the control rod 33 being crushed due to the control rod 33 abutting against the groove wall of the groove 22 in the circumferential direction of the selection tray 20, thus improving the reliability of the pearl color matching and screening device 100.

[0085] Please refer to Figure 3 Please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of a pearl colorimetric screening device 100 after removing part of the cleaning module 60, as provided in some embodiments of this application, from another direction. Figure 6 for Figure 5 Enlarged view at point D. According to some embodiments of this application, the feeding module 30 further includes a connecting groove 38, a screw 39, and a first drive motor (not shown in the figure); the connecting groove 38 is mounted on the mounting surface 111 and is used to connect the outlet of the vibratory feeder 31 and the first end 321; the screw 39 is rotatably disposed on the bottom wall of the connecting groove 38, and the screw 39 rotates to drive the pearl 200 to move toward the first end 321; the first drive motor is used to drive the screw 39 to rotate.

[0086] The connecting groove 38 is a groove-shaped structure used to guide the pearl 200 from the outlet of the vibrating plate 31 to the first end 321.

[0087] The screw 39 is a cylinder with a helical groove. For example, the outer periphery of the screw 39 is provided with helical blades extending helically, and a helical groove is formed between two adjacent helical blades in the axial direction of the screw 39.

[0088] The first drive motor can be a servo motor, which is a high-performance motor that can precisely control position, speed and acceleration. It can "follow" or "obey" the requirements of control signals and quickly and accurately reach and maintain the command state.

[0089] In some embodiments, refer to Figure 6 One end of the connecting groove 38 is connected to the outlet of the vibratory plate 31, and the other end of the connecting groove 38 is connected to the feed inlet 3211.

[0090] In some embodiments, the width of the connecting groove 38 is H and the diameter of the pearl 200 is d, satisfying d≤H≤1.5d, so that the connecting groove 38 allows only one pearl 200 to enter the first end 321 at a time.

[0091] In this embodiment, the first drive motor is used to drive the screw 39 to rotate. The pearls 200 move under the drive of the spiral blades of the screw 39. This makes it easy to control the number of pearls 200 entering the first end 321 through the connecting groove 38 by controlling the opening or closing of the first drive motor and / or by controlling the rotation speed of the output end of the first drive motor. This helps to further reduce the risk of multiple pearls 200 falling into the same receiving groove 21 when the baffle 34 opens the second end 322, thereby further reducing the risk of misscreening or missed screening in the pearl color matching and screening device 100.

[0092] Please refer toFigure 4 Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the feeding module 30 further includes a first sensor 37; the first sensor 37 is installed on the feeding pipe 32 and electrically connected to the first drive motor, and the control rod 33 switches from inserting into the groove 22 to disengaging from the groove 22 so that the first sensor 37 emits a first signal, and the first drive motor receives the first signal to drive the screw 39 to rotate one revolution; wherein, the lead of the spiral blade of the screw 39 is D, and the diameter of the pearl 200 is d, satisfying d≤D≤1.5d.

[0093] The first sensor 37 is a sensor that detects the movement of the control lever 33. For example, the first sensor 37 can be an infrared sensor, an ultrasonic sensor, or a microwave sensor, etc.

[0094] Lead refers to the distance between two adjacent parts of the helical blades along the axial direction of the screw 39. It can be understood that the lead is equal to the linear distance the helical blades move along the axial direction of the screw 39 during one revolution of the screw 39.

[0095] Specifically, after the control lever 33 switches from being inserted into the groove 22 to being disengaged from the groove 22, the baffle 34 blocks the second end 322. At this time, the first sensor 37 sends a first signal, and the first drive motor receives the first signal to drive the screw 39 to rotate one revolution, so as to bring a pearl 200 into the feeding tube 32. Thus, when the control lever 33 inserts into the next groove 22 to drive the baffle 34 to open the second end 322, there is only one pearl 200 in the feeding tube 32.

[0096] In this embodiment, by using d≤D≤1.5d, only one pearl 200 is accommodated between adjacent spiral blades in the circumferential direction of the screw 39. This ensures that only one pearl 200 is carried from the first end 321 into the feeding pipe 32 with one rotation of the screw 39. This further reduces the risk of multiple pearls 200 falling into the same receiving groove 21 when the baffle 34 opens the second end 322, thereby further reducing the risk of misscreening or missed screening in the pearl colorimetric screening device 100.

[0097] Please refer to Figure 2 Please refer to Figure 6 and Figure 7 , Figure 7 for Figure 2Enlarged view at point B. According to some embodiments of this application, the pearl colorimetric screening device 100 further includes a cleaning module 60, which includes a sponge roller 61, a first water pump (not shown), a nozzle (not shown), a second water pump 62, and a drying mechanism 63. The sponge roller 61 is rotatably mounted on the frame 10, and at least a portion of the sponge roller 61 is located in the connecting groove 38 and abuts against the pearl 200. The first water pump is used to provide cleaning fluid to the sponge roller 61. The nozzle is disposed in the connecting groove 38 and is used to provide cleaning fluid into the connecting groove 38 to clean the pearl 200. The second water pump 62 is used to provide cleaning fluid to the nozzle. The drying mechanism 63 is used to provide gas into the connecting groove 38. The sponge roller 61, the nozzle, and the drying mechanism 63 are arranged sequentially from the outlet of the vibrating plate 31 toward the first end 321.

[0098] The sponge roller 61 is designed to rub against the surface of the pearl 200 and apply a cleaning solution to the surface of the pearl 200 to clean it. The cleaning solution can, exemplarily, be water.

[0099] The first water pump is used to supply cleaning fluid to the sponge roller 61.

[0100] In some embodiments, the outlet of the first water pump is located above the sponge roller 61, and the cleaning fluid drips onto the sponge roller 61 under the action of gravity.

[0101] In some embodiments, the cleaning module 60 further includes a first water tank 614, a rotating wheel 611, a third drive motor 612, and a first infusion pipe 613. The rotating wheel 611 is mounted on the output end of the third drive motor 612. A cavity is provided inside the rotating wheel 611, and a flow channel communicating with the cavity is provided on the periphery of the rotating wheel 611. The sponge roller 61 is sleeved on the rotating wheel 611. One end of the first infusion pipe 613 is connected to the outlet end of the first water pump, and the other end is coaxially arranged with the rotating wheel 611 and can rotate relative to the rotating wheel 611. The other end of the first infusion pipe 613 communicates with the cavity. The first water tank 614 is disposed on the mounting surface 111 and is used to store cleaning fluid. The first water pump is used to drive the cleaning fluid in the first water tank 614 into the cavity through the first infusion pipe 613 and out of the cavity through the flow channel to wet the sponge roller 61.

[0102] In some implementations, the cleaning module 60 further includes a first cover plate 622 and a second infusion pipe 621. The first cover plate 622 covers part of the opening of the connecting groove 38, and the nozzle is disposed on the first cover plate 622 and located within the connecting groove 38. The second infusion pipe 621 connects the outlet of the second water pump 62 and the nozzle. The first water pump is used to allow the cleaning solution to enter the nozzle through the second infusion pipe 621 and then enter the connecting groove 38 through the nozzle to rinse the pearls 200.

[0103] In some implementations, the cleaning module 60 also includes a second cover plate 631 and a fan. The second cover plate 631 covers part of the opening of the connecting groove 38 and has air holes communicating with the inside of the connecting groove 38. The fan is used to supply gas to the air holes to dry the pearls 200.

[0104] In this embodiment, the sponge roller 61, the nozzle and the drying mechanism 63 are arranged sequentially from the outlet of the vibrating plate 31 toward the first end 321, so that the cleaning module 60 can brush, wash and air dry the pearls 200 in sequence, thereby reducing the risk of mis-screening caused by stains on the surface of the pearls 200.

[0105] Please refer to Figure 6 and Figure 7 According to some embodiments of this application, the nozzle and drying mechanism 63 are located above the screw 39; the cleaning module 60 also includes a second water tank 64, which is mounted on the mounting surface 111 and located below the screw 39, and is used to collect the cleaning fluid flowing out of the connecting groove 38. The second water pump 62 is used to drive the cleaning fluid in the second water tank 64 to move toward the nozzle.

[0106] In some embodiments, the first end 321 cover and the second end 322 cover the slot of the connecting groove 38 where the screw 39 is provided, so as to reduce the risk that the pearl 200 will detach from the slot of the connecting groove 38 when the screw 39 drives the pearl 200 to move.

[0107] Understandably, there is a gap between the bottom wall of the spiral groove on the screw 39 and the side wall of the connecting groove 38, so that the cleaning fluid can escape from the connecting groove 38 through the gap.

[0108] In some embodiments, the feeding module 30 further includes a guide groove 382 and a third infusion pipe 381. The guide groove 382 is disposed below the connecting groove 38. One end of the third infusion pipe 381 is located inside the guide groove 382, ​​and the other end of the third infusion pipe 381 is located above the second water tank 64. The bottom wall of the guide groove 382 is inclined to guide the cleaning fluid to move towards the third infusion pipe 381.

[0109] In this embodiment, during the rotation of the screw 39 to move the pearl 200 towards the first end 321, the pearl 200 is flipped to a certain extent, positioning the nozzle and drying mechanism 63 above the screw 39. This facilitates further removal of stains from the pearl 200 and allows for air drying. Simultaneously, the cleaning fluid flowing out of the connecting groove 38 is collected by the second water tank 64, and the cleaning fluid in the second water tank 64 is driven towards the nozzle by the second water pump 62. This facilitates the reuse of the cleaning fluid and reduces the consumption of cleaning fluid by the pearl colorimetric screening device 100.

[0110] Please refer to Figure 8 , Figure 8 This is a schematic diagram of another pearl colorimetric screening device 100 provided in some embodiments of this application in another direction. According to some embodiments of this application, the detection module 40 includes a plurality of first cameras 41, wherein the optical axes of any two of the first cameras 41 are not parallel.

[0111] The optical axes of any two cameras in the plurality of first cameras 41 are not parallel, which means that the optical axes of any two cameras in the plurality of first cameras 41 intersect or are parallel, that is, the shooting angles of any two cameras in the plurality of first cameras 41 are not the same.

[0112] In some embodiments, the number of first cameras 41 is three, wherein the optical axes of two first cameras 41 form an angle of 45° with the mounting surface 111, and the optical axes of two first cameras 41 form an angle of 90°, and the optical axis of the other first camera 41 is perpendicular to the mounting surface 111.

[0113] For example, each first camera 41 has 8 independently controlled LEDs, including 4 white LEDs, 4 infrared LEDs and 2 ultraviolet LEDs.

[0114] In this embodiment, the optical axes of any two cameras in the plurality of first cameras 41 are not parallel, thereby enabling the plurality of first cameras 41 to capture images of the pearl 200 from different angles, reducing the risk of misscreening by the pearl color matching and screening device 100.

[0115] Please refer to Figure 8 and Figure 9 , Figure 9 for Figure 8 Enlarged view at point E. According to some embodiments of this application, the detection module 40 further includes a plurality of second cameras 42 and a paddle 43; the optical axes of any two of the second cameras 42 are not parallel; the paddle 43 has a hinged end and a free end, the hinged end is rotatably mounted on the frame 10 and located above the selection tray 20, and the free end is used to abut against the pearls 200 in the receiving groove 21. Along the rotation direction of the selection tray 20, the plurality of first cameras 41, the paddle 43 and the plurality of second cameras 42 are arranged in sequence.

[0116] The paddle 43 is a structural component used to rotate the pearl 200 within the receiving groove 21 that passes through the paddle 43. Exemplarily, the paddle 43 can be made of rubber to reduce the risk of the paddle 43 scratching the pearl 200.

[0117] In some embodiments, the detection module 40 further includes a bracket 44, which is a bent structure. One end of the bracket 44 is mounted on the mounting surface 111, and the hinged end of the paddle 43 is hinged to the other end of the bracket 44. The free end of the paddle 43 extends along the direction of gravity and has a gap with the material selection disk 20.

[0118] Specifically, when the part of the pearl 200 protruding from the receiving groove 21 passes the free end of the paddle 43, it causes the free end to rotate away from the material selection plate 20, and the free end slides relative to the pearl 200. The friction between the free end and the pearl 200 drives the pearl 200 to rotate at a certain angle.

[0119] The optical axes of any two cameras in the plurality of second cameras 42 are not parallel, which means that the optical axes of any two cameras in the plurality of second cameras 42 intersect or are parallel, that is, the shooting angles of any two cameras in the plurality of second cameras 42 are not the same.

[0120] In some embodiments, the number of second cameras 42 is three, wherein the optical axes of two second cameras 42 form an angle of 45° with the mounting surface 111, and the optical axes of two second cameras 42 form an angle of 90°, and the optical axis of the other second camera 42 is perpendicular to the mounting surface 111.

[0121] For example, each second camera 42 has 8 independently controlled LEDs, including 4 white LEDs, 4 infrared LEDs and 2 ultraviolet LEDs.

[0122] In some embodiments, refer to Figure 8 The detection module 40 also includes a host 45, which is installed inside the mounting platform 11 and electrically connected to the first camera 41, the second camera 42 and the sorting module 50, so as to receive and process the image information of the first camera 41 and the second camera 42 and output color sorting signals to the sorting module 50.

[0123] In this embodiment, by setting a lever 43 between multiple first cameras 41 and multiple second cameras 42, when the receiving groove 21 drives the pearl 200 past the free end of the lever 43, the free end of the lever 43 can drive the pearl 200 to rotate, thereby facilitating the multiple second cameras 42 to capture images of other areas of the pearl 200, further reducing the risk of misscreening by the pearl color matching and screening device 100.

[0124] According to some embodiments of this application, the selection tray 20 is made of transparent material, and the mounting surface 111 is a pure white matte backlit surface.

[0125] In this embodiment, by using a transparent material for the selection tray 20 and setting the mounting surface 111 to a pure white matte backlight surface, the pearl 200 is driven through the receiving groove 21 to pass through multiple first cameras 41 and multiple second cameras 42. The pure white matte backlight surface can be lit up to improve the image acquisition of the edge contour of the pearl 200 by the first cameras 41 and the second cameras 42, thereby further reducing the risk of mis-screening by the pearl color matching and screening device 100.

[0126] Please refer to Figure 2 and Figure 10 , Figure 10 for Figure 2 Enlarged view at point C. According to some embodiments of this application, the pearl color matching and sorting device 100 further includes a first air nozzle 70, which is mounted on the frame 10 and located above the sorting tray 20. Along the rotation direction of the sorting tray 20, the first air nozzle 70 is located between the sorting module 50 and the feeding module 30. The first air nozzle 70 is used to supply gas to the receiving tank 21 to clean the receiving tank 21.

[0127] For example, the first gas nozzle 70 can be connected to a gas source, which supplies gas to the first gas nozzle 70. The gas source can be a blower or a high-pressure gas container (such as a gas tank).

[0128] In this embodiment, the receiving groove 21, which is to be used to hold the pearl 200, is cleaned by the first air nozzle 70 to reduce the risk of dirt in the receiving groove 21 contaminating the pearl 200. The structure is simple and easy to implement.

[0129] Please refer to Figure 5 and Figure 8 According to some embodiments of this application, the sorting module 50 includes a plurality of second air nozzles 51 and a plurality of collection tanks 53; the plurality of second air nozzles 51 are arranged at intervals along the circumference of the sorting disk 20, and the second air nozzles 51 respond to the color sorting signal to provide gas to the receiving tank 21 to drive the pearls 200 out of the receiving tank 21; the plurality of collection tanks 53 correspond one-to-one with the plurality of second air nozzles 51, and the collection tanks 53 are used to receive the pearls 200 that have left the receiving tank 21.

[0130] The collection trough 53 is a groove 22 used to collect the sorted pearls 200.

[0131] In some embodiments, the sorting module 50 further includes a plurality of connecting tubes 52, one end of which is correspondingly disposed with a plurality of second air nozzles 51, and the other end of which is respectively located in a plurality of collection slots 53. The connecting tubes 52 are used to receive pearls 200 that have left the collection slots and guide the pearls 200 into the corresponding collection slots 53.

[0132] In this embodiment, multiple second air nozzles 51 deliver color sorting signals to the receiving tank 21 to provide gas, thereby driving the pearls 200 to detach from the receiving tank 21 and be collected by multiple collection tanks 53. The structure is simple and easy to implement.

[0133] Please refer to Figure 11 , Figure 11 This is an assembly diagram of the selection disc 20, the second gear 81, the third gear 23, and the second drive motor 80 provided in some embodiments of this application. According to some embodiments of this application, the pearl color matching and sorting device 100 further includes a second drive motor 80, a second gear 81, and a third gear 23; the second drive motor 80 is mounted on the mounting surface 111; the second gear 81 is mounted on the output end of the second drive motor 80; and the third gear 23 is mounted on the selection disc 20 and meshes with the second gear 81.

[0134] In this embodiment, the second drive motor 80 drives the selection disk 20 to move through the second gear 81 and the third gear 23, thereby improving the transmission accuracy between the second drive motor 80 and the selection disk 20. This makes it easier to adjust the rotation speed of the selection disk 20 by controlling the rotation speed of the output end of the second drive motor 80. This helps to further reduce the risk of multiple pearls 200 falling into the same receiving tank 21 when the baffle 34 opens the second end 322, thereby further reducing the risk of misscreening or missed screening in the pearl color matching and screening device 100.

[0135] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0136] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pearl color matching and screening device, characterized in that, include: The frame has a mounting surface; A material selection tray is rotatably mounted on the mounting surface. The material selection tray is provided with a plurality of receiving slots and a plurality of grooves, and the plurality of receiving slots and the plurality of grooves are arranged at intervals along the circumference of the material selection tray in a one-to-one correspondence. The feeding module includes a vibratory feeder, a feeding tube, a control rod, and a baffle. The feeding tube has a first end and a second end that are arranged opposite to each other. The vibratory feeder is used to feed pearls to the first end. The second end is located above the selection plate and is arranged opposite to the receiving groove. The control rod is movably arranged outside the feeding tube and is arranged opposite to the groove. The baffle is rotatably arranged at the second end and is connected to the control rod in a transmission manner. The control rod disengages from the groove to drive the baffle to close the second end; the control rod is inserted into the groove to drive the baffle to open the second end. The detection module and the sorting module are arranged in sequence along the rotation direction of the sorting disc. The detection module is used to detect the pearls in the receiving tank and output a color sorting signal according to the detection result. The sorting module responds to the color sorting signal to sort the pearls in the receiving tank.

2. The pearl color matching and screening device as described in claim 1, characterized in that, The baffle includes: The baffle body is rotatably disposed at the second end; The first gear is installed at one end of the baffle body, and the control rod is provided with teeth on its outer periphery. The first gear meshes with the teeth.

3. The pearl color matching and screening device as described in claim 1, characterized in that, The feeding module also includes a spring, which is sleeved on the control rod. The two ends of the spring abut against the feeding tube and the control rod, respectively. The spring is used to provide elastic force to the control rod to guide the control rod into the groove.

4. The pearl color matching and screening device as described in claim 1, characterized in that, The control lever includes: The control lever body is movably disposed outside the feeding tube; A pulley is rotatably disposed at one end of the control lever body facing the material selection disk. The material selection disk rotates to drive the pulley to rotate relative to the control lever body.

5. The pearl color matching and screening device as described in claim 1, characterized in that, The feeding module also includes: A connecting groove is installed on the mounting surface and is used to connect the outlet of the vibratory feeder and the first end; A screw is rotatably disposed on the bottom wall of the connecting groove, and the screw rotates to drive the pearl to move toward the first end; A first drive motor is used to drive the screw to rotate.

6. The pearl color matching and screening device as described in claim 5, characterized in that, The feeding module also includes: A first sensor is installed on the feeding tube and electrically connected to the first drive motor. The control rod switches from being inserted into the groove to being disengaged from the groove, so that the first sensor emits a first signal. The first drive motor receives the first signal and drives the screw to rotate one revolution. Wherein, the lead of the spiral blade of the screw is D, and the diameter of the pearl is d, satisfying d≤D≤1.5d.

7. The pearl color matching and screening device as described in claim 5, characterized in that, The pearl color matching and screening device further includes a cleaning module, which comprises: A sponge roller is rotatably mounted on the frame, at least a portion of the sponge roller being located within the connecting groove and abutting against the pearl; A first water pump is used to provide cleaning fluid to the sponge roller; A nozzle is disposed in the connecting groove and is used to provide cleaning fluid into the connecting groove to clean the pearl; A second water pump is used to supply the cleaning fluid to the nozzle; A drying mechanism is used to supply gas into the connecting groove. The sponge roller, the nozzle, and the drying mechanism are arranged in sequence from the outlet of the vibratory plate toward the first end.

8. The pearl color matching and screening device as described in claim 7, characterized in that, The nozzle and the drying mechanism are located above the screw; The cleaning module also includes: The second water tank is installed on the mounting surface and located below the screw, and is used to collect the cleaning fluid flowing out of the connecting groove. The second water pump is used to drive the cleaning fluid in the second water tank to move towards the nozzle.

9. The pearl color matching and screening device as described in claim 1, characterized in that, The detection module includes multiple first cameras, and the optical axes of any two of the first cameras are not parallel.

10. The pearl color matching and screening device as described in claim 9, characterized in that, The detection module also includes: Multiple second cameras, wherein the optical axes of any two of the cameras in the multiple second cameras are not parallel; The paddle has a hinged end and a free end. The hinged end is rotatably mounted on the frame and located above the selection tray. The free end is used to abut against the pearl in the receiving slot. Along the rotation direction of the selection tray, a plurality of first cameras, the paddle, and a plurality of second cameras are arranged in sequence.

11. The pearl color matching and screening device as described in claim 1, characterized in that, The material selection tray is made of transparent material, and the mounting surface is a pure white matte backlit surface.

12. The pearl color matching and screening device as described in claim 1, characterized in that, The pearl color matching and screening device also includes: The first air nozzle is installed on the frame and located above the sorting plate along the rotation direction of the sorting plate. The first air nozzle is located between the sorting module and the feeding module. The first air nozzle is used to supply gas to the receiving tank to clean the receiving tank.

13. The pearl color matching and screening device as described in claim 1, characterized in that, The sorting module includes: Multiple second air nozzles are arranged at circumferential intervals along the sorting plate. The second air nozzles respond to the color sorting signal to supply gas to the receiving tank to drive the pearl out of the receiving tank. Multiple collection slots, each corresponding to a multiple second air nozzle, are used to receive the pearls that have exited the receiving slots.

14. The pearl color matching and sorting device according to any one of claims 1-13, characterized in that, The pearl color matching and screening device also includes: A second drive motor is mounted on the mounting surface; The second gear is installed at the output end of the second drive motor; The third gear is installed on the material selection plate and meshes with the second gear.

Images