A screw sorting device

By designing a screw sorting device, which utilizes a combination of a transmission belt and a stepped guide, the automated sorting of screws is achieved, solving the problems of low efficiency and low accuracy in existing technologies. This device is suitable for mass production in small and medium-sized enterprises.

CN122141957APending Publication Date: 2026-06-05SHENZHEN GRENTECH RF COMM LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-27
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing technologies suffer from low efficiency and accuracy in screw length sorting, high labor intensity in manual sorting, and complex and costly general-purpose material sorting equipment, making it difficult to meet the mass production needs of small and medium-sized enterprises.

Method used

A screw sorting device was designed, including a feeding assembly, a conveying assembly, and a sorting assembly. By utilizing the screw receiving groove on the transmission belt and the multi-stage stepped guide, combined with gravity and a robotic arm, the automated sorting of screws is achieved.

Benefits of technology

It achieves efficient and accurate classification of screws, has a simple structure, controllable cost, and is suitable for mass production in small and medium-sized enterprises.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of screw classification device, including feeding assembly, feeding assembly, classification component and classification frame;The feeding assembly is used to provide the mixing screw for the feeding assembly;The feeding assembly is used to provide the mixing screw for the classification component;The classification component includes classification bottom plate and transmission belt;The classification bottom plate is provided with multiple levels of stepped guide portThe stepped guide port is communicated with the classification frame;Screw storage groove is uniformly and spaced apart on the transmission belt;The feeding assembly is sent to the screw storage groove with different lengths of mixing screw;The transmission belt rotates to drive the mixing screw of the screw storage groove to rotate to the stepped guide port, and make the mixing screw gradually move from the smallest length of the guide port to the direction of the largest length of the guide port.The present application is simple in structure and can efficiently and accurately classify different lengths of screw.
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Description

Technical Field

[0001] This invention relates to the field of screw sorting technology, and in particular to a screw sorting device. Background Technology

[0002] Screws are commonly used fasteners in mechanical assembly and electronic equipment installation. After production and processing, they often need to be classified and screened according to their length specifications for subsequent use. Currently, the industry mainly uses two methods for classifying screw lengths: one is manual sorting, which involves operators visually observing or measuring with a ruler before classifying. This method suffers from problems such as extremely low efficiency, high labor intensity, and large classification errors (easily leading to mixed materials due to visual fatigue), and cannot meet the needs of large-scale production. The other method uses general-purpose material sorting equipment, but it has drawbacks such as feeding congestion, screw damage from clamping, and insufficient length detection accuracy. In addition, it has a complex structure and high cost, making it unsuitable for the batch production scenarios of small and medium-sized enterprises.

[0003] Therefore, there is a need for a length sorting device that can achieve high sorting efficiency, high screening accuracy, simple structure, and controllable cost to address the shortcomings of existing technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a screw sorting device that is accurate, efficient, and simple in structure.

[0005] This invention provides a screw sorting device, including a feeding assembly, a feeding component, a sorting assembly, and sorting frames; the feeding assembly provides a mixing screw to the feeding assembly; the feeding assembly provides the mixing screw to the sorting assembly; the number of sorting frames is the same as the number of different length categories of the mixing screw; The sorting component includes a sorting base plate and a conveyor belt; the sorting base plate is provided with multi-level stepped guides, the number of steps and the size of the guides corresponding to the number of different length categories of the mixing screws and the length of the different screws; the stepped guides are connected to the sorting frame; the conveyor belt is provided with screw receiving grooves evenly spaced; the feeding component feeds the mixing screws of different lengths to the screw receiving grooves; the conveyor belt rotates to drive the mixing screws in the screw receiving grooves to rotate to the stepped guides, and causes the mixing screws to gradually move from the guide with the shortest length to the guide with the longest length.

[0006] Preferably, the transmission belt is an annular transmission belt disposed above the sorting base plate; The screw receiving groove is located on the outside of the transmission belt with its opening facing the outside of the transmission belt, so that when the screw receiving groove is below the transmission belt, its opening faces the stepped guide; when the screw receiving groove rotates from above the transmission belt to below the transmission belt, the feeding assembly feeds the mixing screw to the inlet of the screw receiving groove. Each of the screw receiving slots receives one screw, and the opening of the screw receiving slot is larger than the outer diameter of the mixing screw, so that when the mixing screw is pushed to the corresponding guide port, it can fall out of the slot under the action of gravity and fall into the corresponding guide port.

[0007] Preferably, the screw receiving groove has an inlet and an outlet on both sides of the transmission belt; the sorting base plate has a raised baffle near the outlet; the screw receiving groove has a preset slope so that the inlet is higher than the outlet, so that the mixing screw inside slides from the inlet to the outlet under the action of gravity and is limited by the baffle; the multi-stage stepped guides are arranged along the baffle, and the opening edges of the multi-stage stepped guides are close to the baffle and parallel to the baffle.

[0008] Preferably, a plurality of material guiding channels are provided between the stepped guide and the sorting material frame; the number of material guiding channels is the same as the number of sorting material frames, and they correspond one-to-one with each other.

[0009] Preferably, the feeding assembly includes a hopper, a feeding cylinder, and a top plate; the hopper is used to store the mixing screw; the feeding cylinder provides lifting power to the top plate; the hopper includes a first enclosure and a second enclosure, the first enclosure and the second enclosure forming a V-shape, so that the mixing screw automatically collects at the bottom of the hopper under the action of gravity; the top plate is located at the junction of the first enclosure and the second enclosure and can move up and down reciprocally; the top plate rises and lifts several screws from the mixing screw, so that the feeding assembly can send them to the screw receiving slot.

[0010] Preferably, the top of the top material plate is provided with a sloping top material guide groove and a positioning part located at the lower end of the top material guide groove. The width of the top material guide groove matches the outer diameter of the mixing screw so that when the top material plate moves upward, one mixing screw can be located in the top material guide groove. The inclination of the top material guide groove causes the mixing screw inside to slide down to the lower end of the top material guide groove under the action of gravity and be limited by the positioning part.

[0011] Preferably, the top material guide groove has a notch near the positioning part, so that the mixing screw in the top material guide groove is clamped at the part corresponding to the notch, so that the robot can stably clamp the mixing screw.

[0012] Preferably, the feeding assembly includes a support, a first linear guide rail, a second linear guide rail disposed on the support, a finger cylinder, a lifting cylinder, and a lateral movement cylinder; the finger cylinder is used to drive the robot to pick up the mixing screw from the top material guide groove and release the mixing screw when the feeding is in place; the lateral movement cylinder is used to make the robot reciprocate left and right along the first linear guide rail, and the lifting cylinder is used to make the robot reciprocate up and down along the second linear guide rail.

[0013] Furthermore, the screw sorting device also includes a frame, with the sorting base plate and the transmission belt disposed on the platform of the frame; the sorting material frame disposed below the platform of the frame; the bracket embedded in the frame to support the linear guide rail, the finger cylinder, the lifting cylinder, and the lateral movement cylinder on the platform of the frame; the hopper, the feeding cylinder, and the top plate disposed on the platform of the frame; and the feeding assembly and the conveying assembly disposed on the same side of the frame and close to the conveyor belt.

[0014] Furthermore, the screw sorting device also includes a motor and a controller and a solenoid valve disposed under the table of the frame; the motor is used to drive the transmission belt; the controller is connected to the motor and the solenoid valve respectively; the controller controls the rotation direction and rotation speed of the transmission belt by controlling the motor; the controller controls the movement of the feeding cylinder, the finger cylinder, the lifting cylinder and the lateral movement cylinder by controlling the solenoid valve.

[0015] Preferably, the sorting component further includes a guide member fixed to the sorting base plate and located on one side of the transmission belt. The guide member has an opening-oriented guide groove for receiving the mixing screw released by the robot. The guide groove has a preset slope so that the mixing screw inside can slide down the transmission belt under gravity. The drive device of the transmission belt is used to rotate the unloaded screw receiving groove to below the transmission belt and temporarily stop it in a position facing the guide groove, so that the unloaded screw receiving groove can receive the mixing screw sliding from the guide groove. The guide groove and the top material guide groove are located on the same straight line, so that the robot can reciprocate between the guide groove and the top material guide groove directly above the first linear guide rail.

[0016] Furthermore, the screw sorting device also includes a sensor for detecting whether the unloaded screw receiving trough receives a mixing screw, and for driving the drive device to rotate the conveyor belt within a preset time period after the unloaded screw receiving trough receives a mixing screw.

[0017] Preferably, the mixing screw is made of metal, and the sorting base plate, the hopper, the top plate, and the sorting frame are all made of metal.

[0018] The present invention has a simple structure. By setting multi-level stepped guides on the sorting base plate of the sorting component, and evenly spaced screw receiving grooves for loading the mixing screws on the transmission belt, the mixing screws in the screw receiving grooves reach the stepped guides under the drive of the conveyor belt, and the conveyor belt gradually moves from the guide with the shortest length to the guide with the longest length, thereby ensuring the accuracy of length sorting and enabling efficient sorting. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a screw sorting device according to an embodiment of the present invention; Figure 2 yes Figure 1 The schematic diagram shown is of the screw sorting device after the conveyor belt has been removed, showing the feeding assembly, the material feeding assembly, and the sorting base plate, the material guide channel, and the sorting frame of the screw sorting device; Figure 3 This is a bottom-view schematic diagram of the conveyor belt of the sorting component of the screw sorting device provided by the present invention; Figure 4 This is a schematic diagram showing the connection of the sorting base plate and guide component of the sorting assembly of the screw sorting device provided by the present invention. Figure 5 This is a schematic diagram of the feeding component of the screw sorting device provided by the present invention; Figure 6 This is a schematic diagram of the feeding assembly of the screw sorting device provided by the present invention; Figure 7 This is a three-dimensional schematic diagram of a screw sorting device provided in the second embodiment of the present invention; Figure 8 yes Figure 7 A schematic diagram of the frame of the screw sorting device shown. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 This invention provides a screw sorting device 100, including a feeding assembly 1, a feeding component 2, a sorting component 3, and a sorting frame 5. The feeding assembly 1 provides mixing screws to the feeding component 2; the feeding component 2 provides mixing screws to the sorting component 3; and the sorting frame 5 collects screws of corresponding lengths sorted by the sorting component 3. Specifically, the number of sorting frames 5 is the same as the number of different length categories of the mixing screws, to accurately sort screws of different lengths and collect screws of the same length into the same frame.

[0022] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The sorting component 3 includes a sorting base plate 31 and a transmission belt 32. In this embodiment, the transmission belt 32 is an annular transmission belt disposed above the sorting base plate 31, such that the annular outer diameter of the transmission belt 32 is smaller than the outer diameter of the sorting base plate 31, thus making the overall structure of the screw sorting device 100 compact.

[0023] The sorting base plate 31 is provided with multi-level stepped guides 311. Along the moving direction of the conveyor belt 32, the width of each stepped guide 311 gradually increases. Preferably, the number of steps in the stepped guide 311 is the same as the number of different length categories of the mixing screw, and the size of the guide at each step corresponds one-to-one with the different lengths of the screw. Screw receiving grooves 321 are evenly spaced on the transmission belt 32. Specifically, the screw receiving grooves 321 are located on the outer side of the transmission belt 32 with their openings facing the outer side of the transmission belt 32, so that when the screw receiving grooves 321 are below the transmission belt 32, their openings face the stepped guides 311. When the screw receiving grooves 321 rotate from above the annular transmission belt 32 to below the transmission belt 32, the feeding assembly 2 delivers the mixing screw to the inlet of the screw receiving grooves 321. The stepped guides 311 connect to the sorting frame 5. The conveyor belt 32 rotates to drive the mixing screw in the screw receiving tank 321 to rotate to the stepped guide 311, and causes the mixing screw to gradually move from the guide with the shortest length to the guide with the longest length in the stepped guide 311. In this way, a screw sorting device 100 with a simple structure is formed as a whole; and the mixing screw in the screw receiving tank 321 can be efficiently and accurately sorted into the corresponding sorting frame 5.

[0024] Preferably, each screw receiving groove 321 receives one screw; this ensures that the first screw can be accurately guided into the corresponding sorting frame 5 from the guide opening of the stepped guide opening 311 of the corresponding length, while also preventing multiple screws from getting stuck in the guide opening. Specifically, the opening of a screw receiving groove 321 is larger than the outer diameter of a mixing screw, so that when the mixing screw is pushed to the corresponding guide opening, it can fall out of the opening of the screw receiving groove 321 under the action of gravity and fall into one of the guide openings of the corresponding stepped guide opening 311.

[0025] Furthermore, the sorting component 3 also includes a guide 36. The guide 36 is fixed to the sorting base plate 31 and communicates with the screw receiving groove 321 at the bottom of the transmission belt 32. The screw receiving groove 321 has an inlet and an outlet on both sides of the annular transmission belt 32. The sorting base plate 31 has a raised baffle 310 near the outlet of the screw receiving groove 321. The screw receiving groove 321 has a preset slope. Preferably, the inlet of the screw receiving groove 321 is higher than its outlet, so that the mixing screw in the screw receiving groove 321 slides from its inlet to its outlet under the action of gravity and is limited by the baffle 310. Multi-stage stepped guides 311 are arranged along the baffle 310. Specifically, the opening edges of the multi-stage stepped guides 311 are close to the baffle 310 and parallel to the baffle 310.

[0026] Specifically, the guide 36 is fixed to the sorting base plate 31 and located on one side of the annular transmission belt 32. The guide 36 has an opening-oriented guide groove 361 for receiving the mixing screw released by the robotic arm; and the guide groove 361 has a preset slope so that the mixing screw inside can slide down to the transmission belt 32 under the action of gravity. The drive device of the annular transmission belt 32 is used to rotate the unloaded screw receiving groove 321 to below the transmission belt 32 and temporarily stop it in a position facing the guide groove 361, so that the unloaded screw receiving groove 321 can receive the mixing screw that slides from the guide groove 361.

[0027] Please see Figure 2 To ensure accurate screw sorting, a plurality of guide channels 35 are provided between the stepped guide 311 and the sorting frame 5. That is, the stepped guide 311 is connected to the sorting frame through the guide channels 35. Preferably, the number of guide channels 35 is the same as the number of sorting frames 5, and they correspond one-to-one. That is, each guide channel 35 is connected to one sorting frame 5.

[0028] Please see Figure 2 and Figure 5 In this embodiment, the feeding assembly 1 includes a hopper 12, a feeding cylinder 13, and a top plate 14; the hopper 12 is used to store the mixing screw; the feeding cylinder 13 provides lifting power to the top plate 14; the top plate 14 rises and lifts several screws from the mixing screw, so that the feeding assembly 2 can send them to the screw receiving groove 321.

[0029] Specifically, the hopper 12 includes a first enclosure 121 and a second enclosure 122; the first enclosure 121 and the second enclosure 122 form a V-shape, allowing the mixing screw to automatically collect at the bottom of the hopper 12 under gravity. A top plate 14 is located at the junction of the first enclosure 121 and the second enclosure 122 and can move up and down reciprocally. The top of the top plate 14 is provided with a sloping top guide groove 141 and a positioning part 143 located at the lower end of the top guide groove 141. The width of the top guide groove 141 matches the outer diameter of a mixing screw, allowing a mixing screw to be positioned within the top guide groove 141 when the top plate 14 moves upward. The inclination of the top guide groove 141 causes the mixing screw inside to slide down to the lower end of the top guide groove 141 under gravity and be limited by the positioning part 143.

[0030] Please see Figure 6 The feeding assembly 2 includes a bracket 21, a first linear guide rail 22 and a second linear guide rail 23 disposed on the bracket 21, a finger cylinder 24, a lifting cylinder 25, and a lateral movement cylinder 26. The finger cylinder 24 has a robotic arm 241. The lateral movement cylinder 26 is used to make the robotic arm 241 reciprocate left and right along the first linear guide rail 22, and the lifting cylinder 24 is used to make the robotic arm 241 reciprocate up and down along the second linear guide rail 23. The lifting cylinder 25 and the lateral movement cylinder 26 drive the finger cylinder 24 to clamp the screw lifted by the top plate 14 into the screw receiving groove 321. The finger cylinder 24 is used to drive the robotic arm 241 to clamp the mixing screw from the top guide groove 141 and to release the mixing screw when the feeding is in place. Specifically, the clamping part of the finger cylinder 24 clamps a screw from the lowest point of the top guide groove 141 and puts the screw into the guide 36, guiding the screw into a screw receiving groove 321 at the bottom of the transmission belt 32 that is currently connected to the guide 36.

[0031] Preferably, the top material guide groove 141 has a notch 145 near the positioning part 143, so that the mixing screw in the top material guide groove 141 is used as a clamping position at the part corresponding to the notch 145, so that the robot arm 241 can stably clamp the mixing screw.

[0032] Please see Figure 1 , Figure 4 and Figure 6 Preferably, the guide groove 361 and the top material guide groove 141 are located on the same straight line, so that the robot arm 241 reciprocates between the guide groove 361 and the top material guide groove 141 directly above the first linear guide rail 22.

[0033] Please see Figure 7 and Figure 8Furthermore, the screw sorting device 100 also includes a frame 6, a sorting base plate 31 and a transmission belt 32 disposed on the platform of the frame 6; a sorting frame 5 disposed under the platform of the frame 6; a bracket 21 embedded in the frame 6 to support the linear guide rail 22, the finger cylinder 23, the lifting cylinder 24 and the lateral movement cylinder 25 on the platform of the frame 6; a hopper 12, a feeding cylinder 13 and a top plate 14 disposed on the platform of the frame 6; and the feeding assembly 1 and the feeding assembly 2 disposed on the same side of the frame 6 and close to the conveyor belt 32.

[0034] Please see Figure 7 Furthermore, the screw sorting device 100 also includes a motor and a controller 8 and a solenoid valve 9 disposed under the table of the frame 6; the motor is used to drive the transmission belt 32; the controller 8 is connected to the motor and the solenoid valve 9 respectively; the controller 8 controls the rotation direction and rotation speed of the transmission belt 32 by controlling the motor; the controller 8 controls the movement of the feeding cylinder 13, the finger cylinder 23, the lifting cylinder 24 and the lateral movement cylinder 25 by controlling the solenoid valve 8.

[0035] Furthermore, the screw sorting device 100 also includes a sensor for detecting whether the unloaded screw receiving groove 321 receives a mixing screw, and for driving the conveyor belt 32 to rotate within a preset time after the unloaded screw receiving groove 321 receives a mixing screw. Specifically, the sensor can be a photoelectric sensor or the like. The driving device is a motor.

[0036] In this embodiment, the mixing screw is made of metal. Preferably, the sorting base plate 31, the hopper 12, the top plate 14, and the sorting frame 5 are all made of metal to protect the integrity of the components in the screw sorting device 100 that are in direct contact with the screw, thereby maintaining a reliable sorting accuracy.

[0037] Based on the structure of the screw sorting device 100 described above, the specific working steps of each component of the present invention are described below: Pour the materials from the mixing screws of different lengths into the hopper 12 of the feeding assembly 1; The screw sorting device 100 is activated, causing the feeding cylinder 13 of the feeding assembly 1 to drive the top plate 14 to rise. The rising portion of the mixing screw is placed into the top guide groove 141 and lifted by the top plate 14. This continues until the ejected screw reaches the gripping position of the robotic arm 241 of the finger cylinder 24 of the feeding assembly 2. Specifically, this gripping position is a notch 145 in the top guide groove 141 near the positioning part 143 of the top plate 14. The notch 145 is located at the contact point between the top guide groove 141 and the positioning part 143, allowing the screw to remain stably in the notch 145.

[0038] The finger cylinder 24 of the feeding assembly 2 is lowered to the clamping position, and the manipulator 241 of the finger cylinder 24 clamps a screw; then the manipulator 241 of the finger cylinder 24 rises to the origin, and the transverse cylinder 26 drives the finger cylinder 24 to move to the left, so that the manipulator 241 of the finger cylinder 24 moves to the guide 36 of the dispensing assembly 3, and the screw is guided into a screw receiving groove 321 at the bottom of the transmission belt 32 through the guide 36.

[0039] Simultaneously, the transverse cylinder 26 resets, causing the finger cylinder 24 to reset; after the sensor identifies that the screw has been guided into the screw receiving groove 321, the signal is transmitted to the controller 8; the controller 8 instructs the motor to rotate, causing the conveyor belt 32 to move the screw receiving groove 321 from the minimum width of the stepped guide 311 to the maximum width of the stepped guide 311. The screw naturally falls from the screw receiving groove 321 onto the sorting base plate 31 and is driven to the stepped guide 311, and is sorted into the sorting frame 5 of the corresponding length after the guide of the corresponding width of the stepped guide 311.

[0040] Furthermore, if the operation of the feeding component 1 and the feeding component 2 fails, the controller 8 can also control the movement of the feeding cylinder 13, the finger cylinder 23, the lifting cylinder 24 and the lateral cylinder 25 by controlling the solenoid valve 8 until the operation of the feeding component 1 and the feeding component 2 is normal or successful; the controller 8 then controls the operation of the sorting component 3.

[0041] The above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, such as combining different features in various embodiments, and these all fall within the protection scope of the present invention.

Claims

1. A screw sorting device, characterized in that, It includes a feeding assembly (1), a feeding component (2), a sorting component (3), and sorting boxes (5); the feeding assembly (1) is used to provide a mixing screw to the feeding assembly (2); the feeding assembly (2) is used to provide the mixing screw to the sorting component (3); the number of sorting boxes (5) is the same as the number of different length categories of the mixing screw; The sorting component (3) includes a sorting base plate (31) and a transmission belt (32); the sorting base plate (31) is provided with multi-level stepped guides (311), the number of steps and the size of the stepped guides (311) correspond to the number of different length categories of the mixing screws and the length of different screws; the stepped guides (311) are connected to the sorting material frame (5); the transmission belt (32) is evenly spaced with screw receiving grooves (321); the feeding component (2) feeds the mixing screws of different lengths to the screw receiving grooves (321); the transmission belt (32) rotates to drive the mixing screws in the screw receiving grooves (321) to rotate to the stepped guides (311), and causes the mixing screws to gradually move from the minimum length guide of the stepped guide (311) to the maximum length guide.

2. The screw sorting device according to claim 1, characterized in that: The transmission belt (32) is an annular transmission belt disposed above the classification base plate (31); The screw receiving groove (321) is located on the outside of the transmission belt (32) with the groove opening facing the outside of the transmission belt (32), such that when the screw receiving groove (321) is below the transmission belt (32), its groove opening faces the stepped guide (311); when the screw receiving groove (321) rotates from above the transmission belt (32) to below the transmission belt (32), the feeding assembly (2) feeds the mixing screw to the inlet of the screw receiving groove (321); Each screw receiving groove (321) receives a screw, and the opening of the screw receiving groove (321) is larger than the outer diameter of the mixing screw, so that when the mixing screw is pushed to the corresponding guide port, it can fall out of the groove and into the corresponding guide port under the action of gravity.

3. The screw length sorting device according to claim 2, characterized in that, The screw receiving groove (321) has an inlet and an outlet on both sides of the transmission belt (32); the sorting base plate (31) has a raised baffle (310) near the outlet; the screw receiving groove (321) has a preset slope so that the inlet is higher than the outlet, so that the mixing screw inside slides from the inlet to the outlet under the action of gravity and is limited by the baffle (310); the multi-stage stepped guide (311) is arranged along the baffle (310), and the opening edge of the multi-stage stepped guide (311) is close to the baffle (310) and parallel to the baffle (310).

4. The screw sorting device according to claim 1, characterized in that, A plurality of material guiding channels (35) are provided between the stepped guide (311) and the sorting material frame (5); the number of material guiding channels (35) is the same as the number of sorting material frames (5), and they correspond one-to-one with each other.

5. The screw sorting device according to claim 3, characterized in that, The feeding assembly (1) includes a hopper (12), a feeding cylinder (13), and a top plate (14); the hopper (12) is used to store the mixing screw; the feeding cylinder (13) provides lifting power to the top plate (14); the hopper (12) includes a first enclosure plate (121) and a second enclosure plate (122), the first enclosure plate (121) and the second enclosure plate (122) form a V-shape, so that the mixing screw automatically collects to the bottom of the hopper (12) under the action of gravity; the top plate (14) is set at the junction of the first enclosure plate (121) and the second enclosure plate (122) and can move up and down; the top plate (14) rises and lifts several screws from the mixing screw, so that the feeding assembly (2) can send them to the screw receiving groove (321).

6. The screw sorting device according to claim 5, characterized in that, The top of the top plate (14) is provided with a sloping top guide groove (141) and a positioning part (143) located at the lower end of the top guide groove (141). The width of the top guide groove (141) matches the outer diameter of the mixing screw so that when the top plate (14) moves upward, a mixing screw can be located in the top guide groove (141). The inclination of the top guide groove (141) causes the mixing screw inside to slide down to the lower end of the top guide groove (141) under the action of gravity and be limited by the positioning part (143).

7. The screw sorting device according to claim 6, characterized in that, The feeding assembly (2) includes a bracket (21), a first linear guide rail (22) and a second linear guide rail (23) disposed on the bracket (21), a finger cylinder (24), a lifting cylinder (25) and a transverse cylinder (26); the finger cylinder (24) has a manipulator (241), the finger cylinder (24) is used to drive the manipulator (241) to pick up the mixing screw from the top material guide groove (141) and release the mixing screw when the feeding is in place; the transverse cylinder (26) is used to make the manipulator move left and right along the first linear guide rail (22), and the lifting cylinder (24) is used to make the manipulator (241) move up and down along the second linear guide rail (23).

8. The screw sorting device according to claim 7, characterized in that, The top material guide groove (141) has a notch (145) near the positioning part (143), so that the mixing screw in the top material guide groove (141) is in the clamping position corresponding to the notch, so that the robot (241) can stably clamp the mixing screw.

9. The screw sorting device according to claim 7, characterized in that, The sorting component (3) further includes a guide (36), which is fixed to the sorting base plate (31) and located on one side of the transmission belt (32). The guide (36) has an opening-oriented guide groove (361) for receiving the mixing screw released by the robotic arm; and the guide groove (361) has a preset slope so that the mixing screw inside can slide down to the transmission belt (32) under gravity; the drive device of the transmission belt (32) is used to move the unloaded... The screw receiving groove (321) rotates to the underside of the transmission belt (32) and temporarily stops at the position directly opposite the guide groove (361), so that the unloaded screw receiving groove (321) can receive the mixing screw that slides from the guide groove (361); the guide groove (361) and the top material guide groove (141) are located on the same straight line, so that the robot arm reciprocates along the first linear guide rail (22) between the guide groove (361) and the top material guide groove (141).

10. The screw sorting device according to claim 9, characterized in that, It also includes a sensor for detecting whether the unloaded screw receiving groove (321) receives the mixing screw, and for driving the drive device to drive the conveyor belt (32) to rotate within a preset time when the unloaded screw receiving groove (321) receives the mixing screw.