Screw quality detection equipment based on visual detection

Abstract

The invention discloses screw quality detection equipment based on visual inspection, relates to the field of screw quality detection, and solves the problem that the existing detection equipment is difficult to comprehensively detect screws, the screw quality detection equipment comprises an equipment shell and two mounting belts arranged on the inner side of the equipment shell, and a plurality of magnet blocks are arranged on the outer sides of the mounting belts; two detection hosts are fixedly mounted on the inner side of the equipment shell, and a plurality of detection probes are mounted on the corresponding sides of the two detection hosts; the feeding mechanism enables the detection probe to comprehensively detect the screw, the feeding mechanism is installed on the inner side of the equipment shell, and the feeding mechanism comprises a rotating rod fixedly installed on the outer side of the magnet block; by means of the feeding mechanism, the two horizontally-corresponding magnet blocks on the two mounting belts can attract the two ends of screws correspondingly, separated conveying of the multiple screws is achieved, the screws are in a rotating state in the screw moving process, and therefore the comprehensive detection effect is achieved.

Description

Technical Field

[0001] The present invention relates to the field of screw quality detection, and in particular to a screw quality detection device based on visual detection. Background Art

[0002] Screws are a common mechanical fastener, primarily used to connect or secure two or more objects. They have a top portion for applying force and come in a variety of shapes. To ensure screw production quality, screw defects must be detected in advance to avoid assembly line downtime or after-sales repair costs. High-quality screws reduce the overall equipment failure rate and save maintenance costs.

[0003] When inspecting screws, it is usually necessary to use a visual inspection probe to capture the threads of the screws to promptly detect defects on the screw surface and ensure the production quality of the screws. Existing inspection equipment uses two vertically symmetrical conveyor belts to clamp and convey the screws, and uses two electromagnets to adsorb the two ends of the screws, allowing the visual inspection probe to perform visual inspection on the moving screws. However, the two electromagnets will exert a certain adsorption force on the screws, and the surface of the screws is relatively smooth. The conveyor belt requires greater friction to push the screws downward, which will increase the contact area between the conveyor belt and the screw surface, easily causing the visual inspection probe to miss images, and unable to guarantee the comprehensiveness of the screw quality inspection. Summary of the Invention

[0004] The purpose of the present invention is to provide a screw quality inspection device based on visual inspection to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: The screw quality inspection device based on visual inspection comprises: a device housing and two mounting belts symmetrically arranged on the inner side of the device housing, a plurality of equally spaced magnet blocks are arranged on the outer side of the mounting belts, two symmetrically distributed inspection hosts are fixedly installed on the inner side of the device housing, and a plurality of inspection probes are fixedly installed on the corresponding sides of the two inspection hosts; and further comprises: a feeding mechanism, so that the inspection probes can fully inspect the screws, the feeding mechanism is installed on the inner side of the device housing, the feeding mechanism comprises a rotating rod fixedly installed on the outer side of the magnet block, and the rotating rod can make the magnet The iron block moves in a rotating state; a material receiving mechanism is used to pre-position the screws entering the device housing, and the material receiving mechanism is installed on the inner side of the device housing. The material receiving mechanism includes two material guide inclined plates symmetrically arranged on the inner side of the device housing, and the two material guide inclined plates can pre-position the screws; a discharge mechanism is used to remove the screws from the two magnet blocks, and the discharge mechanism is installed on the inner side of the device housing. The discharge mechanism includes two impellers symmetrically arranged under the two mounting belts, and the two impellers can remove the detected screws from the two magnet blocks.

[0006] Preferably, the feeding mechanism also includes two driving rods symmetrically arranged on the inner side of the mounting belt, and conveyor belts are fixedly installed on both sides of the mounting belt. Two transmission wheels respectively matched with the two conveyor belts are fixedly installed on the outer side of the driving rod, and the rotational movement directions of the two mounting belts are opposite. Two mounting plates respectively located on the inner sides of the two mounting belts are fixedly installed on the inner side of the equipment housing, and the driving rod is rotatably installed on the outer side of the mounting plate. The end of the rotating rod away from the magnet block extends to the inner side of the mounting belt, and the end of the rotating rod away from the magnet block is fixedly installed with a first gear, and the outer side of the mounting plate is fixedly installed with a rack plate.

[0007] Preferably, the material receiving mechanism also includes two baffles symmetrically fixedly mounted on the top of the equipment housing, the two baffles are respectively located directly above the two mounting belts, and the baffles are in a U-shaped structure, the material guide inclined plate is fixedly mounted between the two baffles, and a material receiving plate is provided on the side of the material guide inclined plate away from the equipment housing, and a groove for limiting the insertion of the material receiving plate is provided on the outer side of the material guide inclined plate, and positioning rods are fixedly mounted on both sides of the material receiving plate, the positioning rods are rotatably mounted in the grooves of the material guide inclined plate, and a coil spring is fixedly mounted between the outer side of the positioning rod and the inner side of the material guide inclined plate, and two symmetrically distributed contact frames are fixedly mounted on the outer side of the material receiving plate, and a plurality of equidistantly distributed pressure rods are fixedly mounted on the outer side of the conveyor belt, and the number of the pressure rods on the conveyor belt is the same as the number of the magnet blocks on the mounting belt.

[0008] Preferably, the discharging mechanism also includes two U-shaped frames symmetrically fixedly installed on the inner side of the equipment casing, the U-shaped frame is located below the mounting belt, a driven rod is rotatably installed on the inner side of the U-shaped frame, the two impeller wheels are respectively fixedly installed on the outer sides of the two driven rods, a transmission rod is rotatably installed on the outer side of the U-shaped frame, the transmission rod and the outer side of the driven rod are fixedly installed with a second gear that meshes with each other, the transmission rod and the outer side of the adjacent driving rod are fixedly installed with matching conical wheels, a partition is fixedly installed on the inner side of the equipment casing, an adjusting rod is rotatably installed on the top of the partition, a dividing plate is fixedly installed on the outer side of the adjusting rod, a driving motor is fixedly installed on the outer side of the equipment casing, and the output end of the driving motor is fixedly connected to one end of the adjusting rod.

[0009] Preferably, two symmetrically distributed inner support plates are fixedly mounted on the outer side of the mounting plate, and the outer sides of the inner support plates are in contact with the inner sides of the mounting belts.

[0010] Preferably, a positioning sleeve is rotatably mounted on the outer side of the rotating rod, and the positioning sleeve is fixedly mounted on the outer side of the mounting belt.

[0011] Preferably, a limiting plate is fixedly mounted on one side of the material receiving plate close to the material guiding inclined plate, and a limiting groove for the limiting plate to be inserted into the top of the material guiding inclined plate is provided.

[0012] Preferably, a rubber sleeve is fixedly mounted on the outer side of the pressure rod, and an anti-slip groove is provided on the outer side of the rubber sleeve.

[0013] Preferably, a support plate is fixedly mounted on the outer side of the U-shaped frame, and the transmission rod is rotatably mounted on the outer side of the support plate.

[0014] Preferably, two symmetrically distributed blocking bars are fixedly mounted on the top of the dividing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a feeding mechanism to enable the two horizontal corresponding magnet blocks on the two mounting belts to respectively adsorb the two ends of the screw, and the mounting belts can transport the screw downward, and the other two horizontal corresponding screws adsorb and position the next screw, thereby realizing the separate transportation of multiple screws, and in the process of the screw moving, the screw is in a rotating state, which is convenient for the detection probe to perform comprehensive shooting and detection of the screw, thereby achieving the effect of comprehensive detection.

[0016] The present invention uses a material receiving mechanism so that the screws entering the equipment housing can fall between the two inclined material receiving plates, so that the screws are temporarily retained between the two material receiving plates in a horizontal state, which makes it easier for the two magnet blocks to adsorb the two ends of the screws. In addition, the pressure rod on the conveyor belt can drive the material receiving plates to swing downward through the contact frame, so that the magnet block can smoothly drive the screws to move downward, thereby achieving the effect of smooth material feeding and preventing the screws from being skewed.

[0017] The present invention uses a discharge mechanism to enable the two impellers to rotate in opposite directions, push the inspected screws out from between the two magnet blocks, and send them downward onto a dividing plate, where the screws are screened to ensure normal discharge of the screws, thereby achieving the effects of smooth discharge and rapid screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the magnet block and the driving rod in the present invention; Figure 3 It is a schematic diagram of the conveyor belt and the installation belt structure of the present invention; Figure 4 Schematic diagram of the structure of the mounting plate and the inner support plate in the present invention; Figure 5 for Figure 4 Schematic diagram of the enlarged structure of area A; Figure 6 Schematic diagram of the structure of the guide plate and the baffle in the present invention; Figure 7 Schematic diagram of the structure of the material receiving plate and the contact frame in the present invention; Figure 8 It is a schematic diagram of the structure of the impeller and the distributor plate in the present invention.

[0019] In the figure: 1. Equipment housing; 2. Mounting belt; 3. Magnet block; 4. Detection host; 5. Detection probe; 6. Rotating rod; 7. Material guide inclined plate; 8. Impeller; 9. Driving rod; 10. Conveyor belt; 11. Transmission wheel; 12. Mounting plate; 13. First gear; 14. Rack plate; 15. Baffle; 16. Receiving plate; 17. Positioning rod; 18. Contact frame; 19. Pressure rod; 20. U-shaped frame; 21. Follower rod; 22. Transmission rod; 23. Second gear; 24. Conical wheel; 25. Partition; 26. Adjusting rod; 27. Material dividing plate; 28. Driving motor; 29. ​​Inner support plate; 30. Positioning sleeve; 31. Limit plate; 32. Rubber sleeve; 33. Support plate; 34. Baffle; 35. Coil spring. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1-8 The screw quality inspection device based on visual inspection shown in the figure includes a device housing 1 and two mounting belts 2 symmetrically arranged on the inner side of the device housing 1. A plurality of equally distributed magnet blocks 3 are arranged on the outer side of the mounting belt 2, so that the magnet blocks 3 on the two mounting belts 2 can adsorb, locate and transport the screws. Two symmetrically distributed detection hosts 4 are fixedly installed on the inner side of the device housing 1, and a plurality of detection probes 5 are fixedly installed on the corresponding sides of the two detection hosts 4. The detection probes 5 are used to photograph and detect the screws in a moving state; it also includes: a feeding mechanism, which enables the detection probe 5 to fully detect the screws, and the feeding mechanism is installed on the inner side of the device housing 1.

[0022] The feeding mechanism includes a rotating rod 6 fixedly mounted on the outside of the magnet block 3, and the rotating rod 6 can move the magnet block 3 in a rotating state. The feeding mechanism also includes two driving rods 9 symmetrically arranged on the inner side of the mounting belt 2. Conveyor belts 10 are fixedly mounted on both sides of the mounting belt 2. Two transmission wheels 11 that respectively cooperate with the two conveyor belts 10 are fixedly mounted on the outside of the driving rod 9, so that when the two driving rods 9 rotate, the two conveyor belts 10 can be driven to rotate synchronously through the transmission wheels 11. The two conveyor belts 10 can drive the mounting belts 2 to rotate synchronously, and the rotation directions of the two mounting belts 2 are opposite, which is convenient for the two mounting belts 2 to be transported downward through the magnet block 3 pair of screws. Two mounting plates 12 are fixedly mounted on the inner side of the equipment housing 1, which are respectively located on the inner sides of the two mounting belts 2. The driving rod 9 is rotatably mounted on the outer side of the mounting plate 12, so that the mounting plate 12 provides support for the driving rod 9, and the end of the rotating rod 6 away from the magnet block 3 extends to the inner side of the mounting belt 2, and the rotating The first gear 13 is fixedly installed on the end of the rod 6 away from the magnet block 3, and the rack plate 14 is fixedly installed on the outer side of the mounting plate 12, so that when the mounting belt 2 drives the magnet block 3 to move, the first gear 13 on the rotating rod 6 can contact the rack plate 14, so that the rack plate 14 drives the first gear 13 to rotate, and the first gear 13 drives the magnet block 3 to rotate through the rotating rod 6, so that the magnet block 3 drives the screw to rotate, which is convenient for the detection probe 5 to fully detect the screw. Two symmetrically distributed inner support plates 29 are fixedly installed on the outer side of the mounting plate 12, and the outer side of the inner support plate 29 contacts the inner side of the mounting belt 2, so that the inner support plate 29 provides support for the inner side of the mounting belt 2, and the outer side of the rotating rod 6 is rotatably installed with a positioning sleeve 30, which is fixedly installed on the outer side of the rotating rod 6. The positioning sleeve 30 is fixedly installed on the outer side of the mounting belt 2, so that the mounting belt 2 can drive the rotating rod 6 to move through the positioning sleeve 30, and the rotating rod 6 can drive the magnet block 3 to move. The positioning sleeve 30 provides support for the rotating rod 6, thereby improving the stability of the movement of the magnet block 3.

[0023] Example 2: Please refer to Figure 2-Figure 7, this embodiment further explains the first embodiment. The material receiving mechanism in the figure includes two material guide inclined plates 7 symmetrically arranged on the inner side of the device housing 1. The two material guide inclined plates 7 can pre-position the screws. The material receiving mechanism also includes two baffles 15 symmetrically fixedly installed on the top of the device housing 1. The two baffles 15 are respectively located directly above the two mounting belts 2, and the baffles 15 are U-shaped, which is convenient for guiding the screws between the two mounting belts 2 and preventing the screws from accidentally touching the magnet block 3 moved above the mounting belt 2. The material guide inclined plate 7 is fixedly installed between the two baffles 15. A material receiving plate 16 is provided on the side away from the equipment housing 1, and a groove for limiting the insertion of the material receiving plate 16 is opened on the outer side of the guide inclined plate 7. Positioning rods 17 are fixedly installed on both sides of the material receiving plate 16. The positioning rods 17 are rotatably installed in the groove of the guide inclined plate 7, and a coil spring 35 is fixedly installed between the outer side of the positioning rod 17 and the inner side of the guide inclined plate 7, so that the screws entering the equipment housing 1 can fall between the two material receiving plates 16. Two symmetrically distributed contact frames 18 are fixedly installed on the outer side of the material receiving plate 16, and a plurality of equidistantly distributed pressure rods 19 are fixedly installed on the outer side of the conveyor belt 10. The number of pressure rods 19 on the conveyor belt 10 is the same as the number of magnet blocks 3 on the mounting belt 2, so that when the magnet block 3 contacts the end of the screw, the pressure rod 19 can contact the contact frame 18 on the receiving plate 16. As the magnet block 3 moves, the pressure rod 19 can drive the receiving plate 16 to swing downward through the contact frame 18, and compress the coil spring 35 through the positioning rod 17. The receiving plate 16 can then move away from the screw, making it easier for the magnet block 3 to drive the screw downward smoothly, and when the pressure rod 19 is away from the contact frame 18, the rebound force of the coil spring 35 can be used to swing the receiving plate 16 back to its original position. In order to catch the next screw in time, a limit plate 31 is fixedly installed on the side of the material receiving plate 16 close to the material guide inclined plate 7. A limit groove is provided on the top of the material guide inclined plate 7 for the limit plate 31 to be limited and inserted, so that when the material receiving plate 16 is reset upward, the limit plate 31 on the material receiving plate 16 can be inserted into the limit groove of the material guide inclined plate 7, keeping the two material receiving plates 16 in a V-shaped state to catch the next screw. A rubber sleeve 32 is fixedly installed on the outer side of the pressure rod 19, and an anti-slip groove is provided on the outer side of the rubber sleeve 32, so that the pressure rod 19 can push the contact frame 18 downward through the rubber sleeve 32 to prevent slipping.

[0024] Example 3: Please refer to Figure 1 、 Figure 2 and Figure 8, this embodiment is further explained for other embodiments. The discharge mechanism in the figure includes two impellers 8 symmetrically arranged below the two mounting belts 2. The two impellers 8 can remove the detected screws from the two magnet blocks 3. The discharge mechanism also includes two U-shaped frames 20 symmetrically fixedly mounted on the inner side of the device housing 1. The U-shaped frame 20 is located below the mounting belt 2. A driven rod 21 is rotatably mounted on the inner side of the U-shaped frame 20. The two impellers 8 are respectively fixedly mounted on the outer sides of the two driven rods 21, so that the driven rod 21 can drive the impeller 8 to rotate. The two impellers 8 are relatively The U-shaped frame 20 is rotated in the opposite direction to push the screw between the two magnet blocks 3 downward. The transmission rod 22 is rotatably installed on the outer side of the U-shaped frame 20. The transmission rod 22 and the outer side of the driven rod 21 are fixedly mounted with a meshing second gear 23. When the transmission rod 22 rotates, the driven rod 21 can be driven to rotate by the two second gears 23. The transmission rod 22 and the outer side of the adjacent driving rod 9 are fixedly mounted with a matching conical wheel 24, so that the driving rod 9 can drive the transmission rod 22 to rotate through the two conical wheels 24, thereby realizing the rotation of the transmission rod 22. As a result, the impeller 8 in the rotating state can smoothly move the screw toward The screw is pushed down to prevent it from staying on the magnet block 3 and ensure the normal discharge of the screw. A partition 25 is fixedly installed on the inner side of the equipment housing 1. An adjusting rod 26 is rotatably installed on the top of the partition 25. A dividing plate 27 is fixedly installed on the outer side of the adjusting rod 26. The impeller 8 can push the screw onto the dividing plate 27. The screw that passes the inspection can slide into one side of the partition 25 along the top of the dividing plate 27. A driving motor 28 is fixedly installed on the outer side of the equipment housing 1. The output end of the driving motor 28 is fixedly connected to one end of the adjusting rod 26, so that when the detection probe 5 detects that there is a quality defect in the screw, the detection main The machine 4 can start the driving motor 28, so that the driving motor 28 drives the adjusting rod 26 to rotate, and the adjusting rod 26 drives the dividing plate 27 to rotate, so that the dividing plate 27 is tilted to the other side of the partition 25, and the defective screws can enter the other side of the partition 25 along the top of the dividing plate 27 to achieve screening of the screws. A support plate 33 is fixedly installed on the outer side of the U-shaped frame 20, and the transmission rod 22 is rotatably installed on the outer side of the support plate 33, so that the support plate 33 provides auxiliary support for the transmission rod 22. Two symmetrically distributed baffles 34 are fixedly installed on the top of the dividing plate 27 to provide guidance for the movement of the screws.

[0025] Working principle: First, the staff puts the screw to be tested into the equipment housing 1 through the conveying equipment, so that the screw falls between the two receiving plates 16. At this time, the staff starts the two driving rods 9, so that the two driving rods 9 rotate in opposite directions, and the driving rods 9 drive the transmission wheel 11 to rotate, so that the transmission wheel 11 drives the two conveyor belts 10 to rotate synchronously, and the conveyor belt 10 drives the installation belt 2 to rotate synchronously. The installation belt 2 drives the rotating rod 6 to move through the positioning sleeve 30, and the rotating rod 6 drives the magnet block 3 to move. The installation belt 2 can drive multiple magnet blocks 3 to move synchronously. When the two magnet blocks 3 corresponding to the horizontal level of the two installation belts 2 come into contact with the screws on the receiving plate 16, the two The magnet blocks 3 adsorb the two ends of the screw respectively. At the same time, the pressure rod 19 on the conveyor belt 10 contacts the contact frame 18 on the receiving plate 16. As the magnet block 3 moves, the pressure rod 19 pushes the contact frame 18 to move downward, so that the contact frame 18 drives the receiving plate 16 to swing downward, and the receiving plate 16 drives the positioning rod 17 to rotate, so that the positioning rod 17 compresses the coil spring 35, and the two receiving plates 16 swing downward and away from the screw. The two magnet blocks 3 can smoothly drive the screw to move downward in a horizontal state, and when the pressure rod 19 is away from the contact frame 18, the rebound force of the coil spring 35 can be used to make the receiving plate 16 swing upward and reset, and the conveying equipment can then deliver the next screw between the two receiving plates 16. The screw is continuously connected to the main body 4. Subsequently, the two magnet blocks 3 drive the screw to move between the two detection hosts 4, so that the detection host 4 can shoot and detect the outside of the screw through the detection probe 5. At the same time, the first gear 13 on the rotating rod 6 contacts the rack plate 14, so that the rack plate 14 drives the first gear 13 to rotate. The first gear 13 drives the magnet block 3 to rotate through the rotating rod 6. The two magnet blocks 3 can drive the screw to rotate, so that the detection probe 5 can fully detect the screw in the rotating state. Finally, the magnet block 3 moves the screw to between the two impeller wheels 8, and the driving rod 9 drives the corresponding transmission rod 22 to rotate through the two conical wheels 24. The transmission rod 22 drives the second gears 23 The driven rod 21 rotates, causing the driven rod 21 to drive the impeller 8 to rotate, and the two impellers 8 can push the screws between the two magnet blocks 3 out and push them downward onto the dividing plate 27. The screws that pass the inspection can move along the inclined surface of the dividing plate 27 to one side of the partition 25. When the detection probe 5 detects that there is a quality defect in the screw, the detection host 4 starts the drive motor 28, so that the drive motor 28 drives the adjusting rod 26 to rotate, and the adjusting rod 26 drives the dividing plate 27 to rotate, so that the dividing plate 27 tilts toward the other side of the partition 25. The defective screws can enter the other side of the partition 25 along the top of the dividing plate 27, thereby achieving a comprehensive detection effect and ensuring the accuracy of the screw quality detection.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Screw quality inspection equipment based on visual inspection, characterized in that, include: A device housing (1) and two mounting belts (2) arranged on the inner side of the device housing (1), a plurality of magnet blocks (3) are arranged on the outer side of the mounting belts (2), two detection hosts (4) are fixedly installed on the inner side of the device housing (1), and a plurality of detection probes (5) are installed on the corresponding sides of the two detection hosts (4); Also includes: A feeding mechanism enables the detection probe (5) to fully detect the screws, the feeding mechanism being mounted on the inner side of the device housing (1), the feeding mechanism comprising a rotating rod (6) fixedly mounted on the outer side of the magnet block (3), the rotating rod (6) being capable of moving the magnet block (3) in a rotating state; A material receiving mechanism, used for pre-positioning screws entering the device housing (1), the material receiving mechanism being installed on the inner side of the device housing (1), the material receiving mechanism comprising two material guide inclined plates (7) arranged on the inner side of the device housing (1), the two material guide inclined plates (7) being capable of pre-positioning the screws; A discharge mechanism is used to remove the screws from the two magnet blocks (3). The discharge mechanism is installed on the inner side of the device housing (1). The discharge mechanism includes two impellers (8) arranged below the two mounting belts (2). The two impellers (8) can remove the screws that have been inspected from the two magnet blocks (3).

2. The visual inspection-based screw quality inspection device according to claim 1, characterized in that: The feeding mechanism further comprises two driving rods (9) arranged on the inner side of the mounting belt (2), a conveyor belt (10) is fixedly mounted on both sides of the mounting belt (2), two transmission wheels (11) respectively matched with the two conveyor belts (10) are fixedly mounted on the outer side of the driving rod (9), and the two mounting belts (2) rotate in opposite directions, two mounting plates (12) are fixedly mounted on the inner side of the device housing (1), the driving rod (9) is rotatably mounted on the outer side of the mounting plate (12), a first gear (13) is fixedly mounted on the end of the rotating rod (6) away from the magnet block (3), and a rack plate (14) is mounted on the outer side of the mounting plate (12).

3. The visual inspection-based screw quality inspection device according to claim 2, characterized in that: The material receiving mechanism further comprises two baffles (15) mounted on the top of the device housing (1), and the baffles (15) are U-shaped structures, the material guide inclined plate (7) is mounted between the two baffles (15), a material receiving plate (16) is provided on one side of the material guide inclined plate (7), a groove for limiting insertion of the material receiving plate (16) is provided on the outer side of the material guide inclined plate (7), and positioning rods (17) are fixedly mounted on both sides of the material receiving plate (16), and the positioning rods (17) are fixed on both sides of the material receiving plate (16). 7) is rotatably mounted in the groove of the guide inclined plate (7), and a coil spring (35) is fixedly mounted between the outer side of the positioning rod (17) and the inner side of the guide inclined plate (7), two contact frames (18) are fixedly mounted on the outer side of the receiving plate (16), and a plurality of pressure rods (19) are fixedly mounted on the outer side of the conveyor belt (10), and the number of the pressure rods (19) on the conveyor belt (10) is the same as the number of the magnet blocks (3) on the mounting belt (2).

4. The visual inspection-based screw quality inspection device according to claim 3, characterized in that: The discharging mechanism further comprises two U-shaped frames (20) mounted on the inner side of the device housing (1), a driven rod (21) being rotatably mounted on the inner side of the U-shaped frame (20), the two impellers (8) being fixedly mounted on the outer sides of the two driven rods (21), a transmission rod (22) being rotatably mounted on the outer side of the U-shaped frame (20), a meshing second gear (23) being fixedly mounted on the outer sides of the transmission rod (22) and the driven rod (21), a matching conical wheel (24) being fixedly mounted on the outer sides of the transmission rod (22) and the adjacent driving rod (9), a partition (25) being mounted on the inner side of the device housing (1), an adjusting rod (26) being rotatably mounted on the top of the partition (25), a material dividing plate (27) being fixedly mounted on the outer side of the adjusting rod (26), a driving motor (28) being mounted on the outer side of the device housing (1), an output end of the driving motor (28) being fixedly connected to one end of the adjusting rod (26).

5. The visual inspection-based screw quality inspection device according to claim 2, characterized in that: Two inner support plates (29) are fixedly mounted on the outer side of the mounting plate (12), and the outer sides of the inner support plates (29) are in contact with the inner sides of the mounting belt (2).

6. The visual inspection-based screw quality inspection device according to claim 2, characterized in that: A positioning sleeve (30) is rotatably mounted on the outer side of the rotating rod (6), and the positioning sleeve (30) is mounted on the outer side of the mounting belt (2).

7. The visual inspection-based screw quality inspection device according to claim 3, characterized in that: A limiting plate (31) is fixedly mounted on one side of the material receiving plate (16), and a limiting groove for the limiting plate (31) to be inserted into the top of the material guiding inclined plate (7) is provided.

8. The visual inspection-based screw quality inspection device according to claim 3, characterized in that: A rubber sleeve (32) is installed on the outer side of the pressure rod (19), and an anti-slip groove is provided on the outer side of the rubber sleeve (32).

9. The visual inspection-based screw quality inspection device according to claim 4, characterized in that: A support plate (33) is installed on the outside of the U-shaped frame (20), and the transmission rod (22) is rotatably installed on the outside of the support plate (33).

10. The visual inspection-based screw quality inspection device according to claim 4, characterized in that: Two baffles (34) are installed on the top of the distribution plate (27).

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