A sorting device for bolt inspection

Abstract

The application discloses a sorting device for bolt detection, which comprises a workbench, a limiting mechanism, a sliding mechanism and a detection mechanism. The limiting mechanism comprises a first back baffle and a first front baffle arranged on the upper surface of the workbench, a second left baffle and a second right baffle arranged on the middle part of the outer side of the first front baffle, and a third left baffle and a third right baffle arranged on the right end of the outer side of the first front baffle. The sliding mechanism comprises a first slide rail group arranged below the workbench, a second slide rail group and a third slide rail group arranged in front of the first slide rail group, and a plurality of sliding assemblies. The detection mechanism comprises a first detection camera, a first detection clamping assembly, a second detection camera and a second detection clamping assembly arranged on the upper surface of the workbench. The application can detect the two ends and the surface of the bolt in all directions, and place the unqualified bolts in different discharge frames. The application has high detection accuracy, high automation degree and convenient operation, and improves work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of bolt processing technology, and specifically relates to a sorting device for bolt inspection. Background Technology

[0002] In modern industrial production, bolts, as common fasteners, are used to connect and secure various mechanical equipment. Because bolts may develop defects such as wear and cracks during use, regular inspection and maintenance are crucial to ensure the safe operation of equipment. Traditional manual visual inspection methods are both time-consuming and error-prone; with the increasing number of bolts, manual inspection becomes almost impossible. Therefore, improving the efficiency and accuracy of bolt inspection has become an urgent problem to be solved. Currently, researchers both domestically and internationally have conducted a series of studies on bolt inspection, mainly including optical inspection, electrochemical inspection, magnetic particle inspection, and ultrasonic inspection. However, these methods still face many challenges in practical applications, such as high equipment costs, complex operation, and strict requirements for the inspection environment. Furthermore, existing technologies are mostly limited to specific types of bolts or specific inspection scenarios, failing to meet the needs of fully automated inspection of all types of bolts. Therefore, developing an automated, high-efficiency sorting device for inspection to solve this problem is of great significance. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a sorting device for bolt inspection, which can perform all-round inspection of both ends and the surface of bolts, and classify unqualified bolts into different unloading frames. It has high inspection accuracy, high degree of automation, and convenient operation, thereby improving work efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A bolt sorting device for inspection includes: a worktable; The limiting mechanism includes a first rear baffle and a first front baffle disposed on both sides of the middle of the upper surface of the worktable, a second left baffle and a second right baffle disposed on the middle of the outer side of the first front baffle, and a third left baffle and a third right baffle disposed on the right side of the outer side of the first front baffle. A first limiting channel is formed between the first rear baffle and the first front baffle, a second limiting channel connected to the first limiting channel is formed between the second left baffle and the second right baffle, and a third limiting channel connected to the first limiting channel is formed between the third left baffle and the third right baffle. The sliding mechanism includes a first slide rail group disposed below the worktable, a second slide rail group and a third slide rail group disposed in front of the first slide rail group, and multiple sliding components. The first slide rail group, the second slide rail group and the third slide rail group each include a pair of parallel first straight rails, a pair of second straight rails perpendicular to the first straight rails, and four curved rails connecting the first straight rails and the second straight rails together. The sliding components include a moving rod correspondingly slidably connected to the first slide rail group, the second slide rail group and the third slide rail group, and a first magnetic connecting rod for driving the bolt to move. The testing mechanism includes a first testing camera, a first testing clamping assembly, a second testing camera, and a second testing clamping assembly, all disposed on the upper surface of the workbench.

[0005] Preferably, the worktables of the aforementioned first limiting channel, second limiting channel and third limiting channel are each provided with a long strip opening that passes through both ends of the first limiting channel, second limiting channel and third limiting channel respectively. The top of the long strip opening is provided with a thin plate that is flush with the upper surface of the worktable. The thin plate is made of transparent plastic plate. The first magnetic connecting rod extends into the long strip opening, contacts the bottom of the thin plate, and magnetically attracts the bolt to drive the bolt to move.

[0006] Preferably, in the aforementioned first slide rail group, the first straight rail on the front side is located below and behind the first limiting channel, so as to drive the first magnetic connecting rod of the first slide rail group to move in the long strip opening of the first limiting channel; in the second slide rail group, the first straight rail on the rear side and the curved rail on the right side are respectively located below and in front of the first limiting channel and below the second limiting channel, so as to drive the first magnetic connecting rod of the second slide rail group to move in the long strip opening of the first limiting channel and the long strip opening of the second limiting channel; in the third slide rail group, the first straight rail on the rear side and the curved rail on the right side are respectively located below and in front of the first limiting channel and below the third limiting channel, so as to drive the first magnetic connecting rod of the third slide rail group to move in the long strip opening of the first limiting channel and the long strip opening of the third limiting channel.

[0007] Preferably, it further includes a feeding mechanism, including feeding frames respectively disposed below the tail ends of the first limiting channel, the second limiting channel and the third limiting channel, wherein the thin plates located at the tail ends of the first limiting channel, the second limiting channel and the third limiting channel are all inclined downwards to the outward ends so that the bolts slide down into the feeding frames.

[0008] Preferably, a fixed rod is vertically fixed to the lower inner side of the aforementioned movable rod, and a first cylinder for driving the first magnetic connecting rod is fixed to the top of the outer end of the fixed rod.

[0009] Preferably, the aforementioned first detection clamping assembly is disposed on the right side of the first detection camera, including a first support plate, a first top plate vertically fixed to the front side of the top of the first support plate, a first rotating motor and a second magnetic connecting rod slidably disposed at the bottom of the first top plate, the top end of the second magnetic connecting rod being connected to a second cylinder via a telescopic rod, the top of the second cylinder being fixedly connected to the output end of the first rotating motor, the first rotating motor driving the second magnetic connecting rod to rotate, and the second cylinder driving the second magnetic connecting rod to move up and down, so as to realize the up and down movement and rotation of the bolt.

[0010] Preferably, the aforementioned second detection clamping assembly includes a second support plate, a second top plate vertically fixed to the front side of the top of the second support plate, a third cylinder fixed to the bottom of the second top plate, a first lifting plate fixed to the output end of the third cylinder, and a first clamping plate and a second clamping plate located above the first limiting channel. The second connecting plate and the third connecting plate are respectively vertically fixed to the two sides of the bottom of the first lifting plate. The left side of the first clamping plate is rotatably connected to the lower part of the inner side of the second connecting plate through a rotating shaft. The right side of the second clamping plate is connected to a fourth cylinder through a telescopic rod. The fourth cylinder is connected to a second rotating motor fixed to the lower part of the third connecting plate through a rotating shaft. The second clamping plate is moved left and right by the fourth cylinder to realize the fixing and loosening of the bolts on the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate are rotated by the second rotating motor. The second detection camera is fixed to the lower part of the front side of the second support plate.

[0011] Preferably, the aforementioned first rear baffle is provided with an opening at the position corresponding to the second magnetic connecting rod, the size of which is smaller than the length of the bolt and larger than the width of the second magnetic connecting rod.

[0012] Preferably, a vibrating feed plate is also provided on the outer side of the aforementioned workbench, and the discharge port of the vibrating feed plate is connected to the left end of the first limiting channel.

[0013] The advantages of this invention are: (1) The present invention can perform all-round inspection of the two ends and the surface of the bolt, and classify the bolts that fail the inspection into different blanking boxes. The inspection accuracy is high, the degree of automation is high and the operation is convenient, which improves the work efficiency. (2) The first magnetic connecting rod of the first slide rail group can drive the bolt to move in the first limiting channel, the first magnetic connecting rod of the second slide rail group can drive the unqualified bolt to move to the unloading frame below the second limiting channel, and the first magnetic connecting rod of the third slide rail group can drive the unqualified bolt to move to the unloading frame below the third limiting channel. (3) The first detection clamping component can magnetically hold the outer surface of the bolt and drive the bolt to rotate, so that the first detection camera can take pictures of the two ends of the bolt for detection; the second detection clamping component can fix the two ends of the bolt and drive the bolt to rotate, so that the first detection camera can take pictures of the surface of the bolt for detection, thereby completing the all-round detection of the bolt. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention; Figure 2 This is a top view of the sliding mechanism in this invention; Figure 3 This is a cross-sectional view of the first limiting channel in this invention; Figure 4 This is a schematic diagram of the structure of the first magnetic connecting rod in this invention; Figure 5 This is a schematic diagram of the structure of the first detection clamping component in this invention; Figure 6 This is a schematic diagram of the structure of the second detection clamping component in this invention.

[0015] The meanings of the reference numerals in the attached diagram are as follows: 1. Workbench; 1.1. Long slot; 2. First rear baffle; 2.1. Opening; 3. First front baffle; 4. Third left baffle; 5. Third right baffle; 6. First limiting channel; 7. Second limiting channel; 8. Third limiting channel; 9. First slide rail assembly; 9.1. First straight rail; 9.2. Second straight rail; 9.3. Curved rail; 10. Second slide rail assembly; 11. Third slide rail assembly; 12. First magnetic connecting rod; 13. First detection camera; 14. Second detection camera; 15. 16. Fixed rod; 17. First cylinder; 18. First support plate; 19. First top plate; 20. First rotating motor; 21. Second magnetic connecting rod; 22. Second cylinder; 23. Second support plate; 24. Second top plate; 25. Third cylinder; 26. First lifting plate; 27. First clamping plate; 28. Second clamping plate; 29. ​​Second connecting plate; 30. Third connecting plate; 31. Fourth cylinder; 32. Second rotating motor; 33. Vibrating feed plate; 34. Bolt; 35. Second left baffle; 36. Second right baffle; 37. Moving rod; 38. Thin plate. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] See Figure 1 A sorting device for bolt inspection includes: a worktable 1, a limiting mechanism, a sliding mechanism, an inspection mechanism, a feeding mechanism, and a control unit.

[0018] The limiting mechanism includes a first rear baffle 2 and a first front baffle 3 located on both sides of the middle of the upper surface of the workbench 1; a second left baffle 35 and a second right baffle 36 located on the middle of the outer side of the first front baffle 3; and a third left baffle 4 and a third right baffle 5 located on the right side of the outer side of the first front baffle 3. A first limiting channel 6 is formed between the first rear baffle 2 and the first front baffle 3; a second limiting channel 7 connected to the first limiting channel 6 is formed between the second left baffle 35 and the second right baffle 36; and a third limiting channel 8 connected to the first limiting channel 6 is formed between the third left baffle 4 and the third right baffle 5. The bolt 34 can move within the three limiting channels to ensure the accuracy of the bolt 34's movement position and to better cooperate with the detection mechanism.

[0019] See Figure 2 and Figure 3 The sliding mechanism comprises a first slide rail group 9 located below the worktable 1, a second slide rail group 10 and a third slide rail group 11 located in front of the first slide rail group 9, and multiple sliding components. Each of the first, second, and third slide rail groups includes a pair of parallel first straight rails 9.1, a pair of second straight rails 9.2 perpendicular to the first straight rails 9.1, and four curved rails 9.3 connecting the first and second straight rails 9.1 and 9.2. The sliding components include a moving rod 37 correspondingly slidably connected to the first, second, and third slide rail groups 9, and a first magnetic connecting rod 12 for moving the bolt 34. The sliding connection method here uses a slider and a slider-driven motor, a common technique in the prior art, and will not be elaborated further. A fixed rod 16 is vertically fixed to the lower inner side of the moving rod 37, and a first cylinder 17 for driving the first magnetic connecting rod 12 is fixed to the top outer end of the fixed rod 16, for driving the first magnetic connecting rod 12 to move up and down. The sliding components on the first slide rail group 9, the second slide rail group 10, and the third slide rail group 11 are all provided in multiple ways, which can be set according to actual needs.

[0020] See Figure 4 Each worktable 1, including the first limiting channel 6, the second limiting channel 7, and the third limiting channel 8, is equipped with a long, narrow opening 1.1 corresponding to both ends of the first limiting channel 6, the second limiting channel 7, and the third limiting channel 8. The first magnetic connecting rod 12 extends into the long opening 1.1 and moves to provide positioning, ensuring the accuracy of the top position of the first magnetic connecting rod 12. The top of the long opening 1.1 is equipped with a thin plate 38 that is flush with the upper surface of the worktable 1. The thin plate 38 is made of transparent plastic. The first magnetic connecting rod 12 extends into the long opening 1.1, contacts the bottom of the thin plate 38, and magnetically attracts the bolt 34, thereby moving the bolt 34.

[0021] The unloading mechanism includes unloading frames 15 respectively located below the tail ends of the first limiting channel 6, the second limiting channel 7 and the third limiting channel 8. The thin plates 38 located at the tail ends of the first limiting channel 6, the second limiting channel 7 and the third limiting channel 8 are all inclined downwards to the outward end so that after the first magnetic connecting rod 12 loosens the bolt 34, the bolt 34 can slide down into the unloading frame 15.

[0022] In the first slide rail group 9, the first straight rail 9.1 on the front side is located below and behind the first limiting channel 6, so as to drive the first magnetic connecting rod 12 of the first slide rail group 9 to move in the long strip opening 1.1 of the first limiting channel 6; in the second slide rail group 10, the first straight rail 9.1 on the rear side and the curved rail 9.3 on the right side are located below and in front of the first limiting channel 6 and below the second limiting channel 7, respectively, so as to drive the first magnetic connecting rod 12 of the second slide rail group 10 to move in the long strip opening 1.1 of the first limiting channel 6 and the long strip opening 1.1 of the second limiting channel 7; in the third slide rail group 11, the first straight rail 9.1 on the rear side and the curved rail 9.3 on the right side are located below and in front of the first limiting channel 6 and below the third limiting channel 8, respectively, so as to drive the first magnetic connecting rod 12 of the third slide rail group 11 to move in the long strip opening 1.1 of the first limiting channel 6 and the long strip opening 1.1 of the third limiting channel 8.

[0023] See Figure 5 The inspection mechanism includes a first inspection camera 13, a first inspection clamping assembly, a second inspection camera 14, and a second inspection clamping assembly, all mounted on the upper surface of the workbench 1. See also... Figure 6 The first detection clamping assembly is located on the right side of the first detection camera 13, including a first support plate 18, a first top plate 19 vertically fixed to the front top of the first support plate 18, a first rotating motor 20 slidably disposed at the bottom of the first top plate 19, and a second magnetic connecting rod 21. The sliding connection between the bottom of the first top plate 19 and the first rotating motor 20 is a slide rail, a slider, and a slider drive motor, which is a commonly used technical means in the prior art and will not be described in detail. This is used to drive the second magnetic connecting rod 21 to move back and forth. The top of the second magnetic connecting rod 21 is connected to a second cylinder 22 via a telescopic rod. The top of the second cylinder 22 is fixedly connected to the output end of the first rotating motor 20. The first rotating motor 20 drives the second magnetic connecting rod 21 to rotate, and the second cylinder 22 drives the second magnetic connecting rod 21 to move up and down, so as to realize the up and down movement and rotation of the bolt 34.

[0024] The first rear baffle 2 has an opening 2.1 at the position corresponding to the second magnetic connecting rod 21. The size of the opening 2.1 is smaller than the length of the bolt 34 but larger than the width of the second magnetic connecting rod 21. The second magnetic connecting rod 21 moves downward until its bottom contacts the top of the worktable 1, then moves forward to the opening 2.1, magnetically attracting the side of the bolt 34. It then moves upward to the designated position, where the first detection camera 13 takes a picture and detects both ends of the bolt 34. After the detection is completed, the bolt 34 is returned to the first limiting channel 6, and the second magnetic connecting rod 21 moves backward. The bolt 34 is blocked by the first rear baffles 2 on both sides of the opening 2.1, thus separating it from the second magnetic connecting rod 21.

[0025] See Figure 6 The second detection clamping assembly includes a second support plate 23, a second top plate 24 vertically fixed to the front side of the top of the second support plate 23, a third cylinder 25 fixed to the bottom of the second top plate 24, a first lifting plate 26 fixed to the output end of the third cylinder 25, and a first clamping plate 27 and a second clamping plate 28 located above the first limiting channel 6. The second connecting plate 29 and the third connecting plate 30 are vertically fixed to the two sides of the bottom of the first lifting plate 26, respectively. The left side of the first clamping plate 27 is rotatably connected to the lower part of the inner side of the second connecting plate 29 through a rotating shaft. The right side of the second clamping plate 28 is connected to a fourth cylinder 31 through a telescopic rod. The fourth cylinder 31 is connected to a second rotating motor 32 fixed to the lower part of the third connecting plate 30 through a rotating shaft. The second clamping plate 28 is moved left and right by the fourth cylinder 31 to realize the fixing and loosening of the bolt 34 by the first clamping plate 27 and the second clamping plate 28. The first clamping plate 27 and the second clamping plate 28 are rotated by the second rotating motor 32. The second detection camera 14 is fixed to the lower part of the front side of the second support plate 23. The third cylinder 25 drives the first clamping plate 27 and the second clamping plate 28 to move downward to the designated position. The first clamping plate 27 and the second clamping plate 28 move towards each other to clamp the bolt 34, and then move upward to the designated position. The second detection camera 14 takes a picture to inspect the surface of the bolt 34.

[0026] A vibrating feeder 33 is also provided on the outer side of the workbench 1. The discharge port of the vibrating feeder 33 is connected to the left end of the first limiting channel 6, which is used to feed the bolts 34 into the first limiting channel 6 in sequence.

[0027] The control unit channel wires are connected to each drive mechanism to facilitate the control of each mechanism's operation.

[0028] To better illustrate the present invention, its working process is described in detail below: The vibrating feeder feeds the bolt 34 into the first limiting channel 6. The first magnetic connecting rod 12 of the first slide rail assembly 9 moves to the long opening 1.1 of the first limiting channel 6, magnetically attracts the bottom of the bolt 34, and moves the bolt 34 to the designated detection position. The bolt 34 is then released and continues to slide along the first slide rail assembly 9. The second magnetic connecting rod 21 of the first detection clamping assembly moves to the opening 2.1, magnetically attracts the side of the bolt 34, and then moves upward to the designated position. The first detection camera 13 takes a picture and detects both ends of the bolt 34. After the detection, the bolt 34 is sent back to the first limiting channel 6. The detection result is judged by the control unit. If the detection is unqualified, the first magnetic connecting rod 12 of the second slide rail assembly 10 drives the bolt 34 to move sequentially in the first limiting channel 6 and the second limiting channel 7 until it falls into the first feed frame 15. If the inspection is qualified, the first magnetic connecting rod 12 of the next first slide rail group 9 drives the bolt 34 to continue moving in the first limiting channel 6 to below the second detection clamping assembly. The bolt 34 is released and continues to slide along the first slide rail group 9. The second detection clamping assembly fixes the bolt 34 and moves it upward to the designated position. The second detection camera 14 takes a picture and inspects the surface of the bolt 34. The inspection result is judged by the control unit. If the inspection is unqualified, the first magnetic connecting rod 12 of the third slide rail group 11 drives the bolt 34 to move in the first limiting channel 6 and the third limiting channel 8 in sequence until it falls into the second unloading frame 15. If the inspection is qualified, the first magnetic connecting rod 12 of the next first slide rail group 9 drives the bolt 34 to continue moving in the first limiting channel 6 to the third unloading frame 15.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A sorting device for bolt inspection, comprising: Workbench (1); The limiting mechanism includes a first rear baffle (2) and a first front baffle (3) disposed on both sides of the middle of the upper surface of the workbench (1), a second left baffle (35) and a second right baffle (36) disposed on the middle of the outer side of the first front baffle (3), and a third left baffle (4) and a third right baffle (5) disposed on the right side of the outer side of the first front baffle (3). A first limiting channel (6) is formed between the first rear baffle (2) and the first front baffle (3), a second limiting channel (7) connected to the first limiting channel (6) is formed between the second left baffle (35) and the second right baffle (36), and a third limiting channel (8) connected to the first limiting channel (6) is formed between the third left baffle (4) and the third right baffle (5). The sliding mechanism includes a first slide rail group (9) disposed below the worktable (1), a second slide rail group (10) and a third slide rail group (11) disposed in front of the first slide rail group (9), and a plurality of sliding components. The first slide rail group (9), the second slide rail group (10) and the third slide rail group (11) each include a pair of parallel first straight rails (9.1), a pair of second straight rails (9.2) perpendicular to the first straight rails (9.1) and four curved rails (9.3) connecting the first straight rails (9.1) and the second straight rails (9.2). The sliding components include a moving rod (37) correspondingly slidably connected to the first slide rail group (9), the second slide rail group (10) and the third slide rail group (11) and a first magnetic connecting rod (12) for driving the bolt (34) to move. The testing mechanism includes a first testing camera (13), a first testing clamping assembly, a second testing camera (14), and a second testing clamping assembly, all disposed on the upper surface of the workbench (1). The worktables (1) of the first limiting channel (6), the second limiting channel (7) and the third limiting channel (8) are all provided with long strip openings (1.1) that pass through both ends of the first limiting channel (6), the second limiting channel (7) and the third limiting channel (8). The top of the long strip opening (1.1) is provided with a thin plate (38) that is flush with the height of the upper surface of the worktable (1). The thin plate (38) is made of transparent plastic plate. The first magnetic connecting rod (12) extends into the long strip opening (1.1) and contacts the bottom of the thin plate (38) and magnetically attracts the bolt (34) to drive the bolt (34) to move. In the first slide rail group (9), the first straight rail (9.1) on the front side is located below and behind the first limiting channel (6) to drive the first magnetic connecting rod (12) of the first slide rail group (9) to move in the long strip opening (1.1) of the first limiting channel (6); in the second slide rail group (10), the first straight rail (9.1) on the rear side and the curved rail (9.3) on the right side are located below and in front of the first limiting channel (6) and below the second limiting channel (7), respectively, to drive the first magnetic connecting rod (12) of the second slide rail group (10) to move in the long strip opening (1.1) of the first limiting channel (6). The first straight rail (9.1) on the rear side and the curved rail (9.3) on the right side of the third slide rail group (11) are respectively located below the front side of the first limit channel (6) and below the third limit channel (8) to drive the first magnetic connecting rod (12) of the third slide rail group (11) to move in the first limit channel (6) long strip opening (1.1) and the third limit channel (8) long strip opening (1.1).

2. The bolt sorting device according to claim 1, characterized in that, It also includes a feeding mechanism, including a feeding frame (15) respectively set below the tail ends of the first limiting channel (6), the second limiting channel (7) and the third limiting channel (8). The thin plates (38) located at the tail ends of the first limiting channel (6), the second limiting channel (7) and the third limiting channel (8) are all inclined downwards to the outward end so that the bolt (34) slides down into the feeding frame (15).

3. The bolt sorting device according to claim 1, characterized in that, A fixed rod (16) is vertically fixed to the lower inner side of the movable rod (37), and a first cylinder (17) for driving the first magnetic connecting rod (12) is fixed to the top of the outer end of the fixed rod (16).

4. A sorting device for bolt inspection according to claim 1, characterized in that, The first detection clamping assembly is located on the right side of the first detection camera (13), including a first support plate (18), a first top plate (19) vertically fixed to the front side of the top of the first support plate (18), a first rotating motor (20) slidably disposed at the bottom of the first top plate (19), and a second magnetic connecting rod (21). The top end of the second magnetic connecting rod (21) is connected to a second cylinder (22) through a telescopic rod. The top of the second cylinder (22) is fixedly connected to the output end of the first rotating motor (20). The first rotating motor (20) drives the second magnetic connecting rod (21) to rotate, and the second cylinder (22) drives the second magnetic connecting rod (21) to move up and down, so as to realize the up and down movement and rotation of the bolt (34).

5. A sorting device for bolt inspection according to claim 1, characterized in that, The second detection clamping assembly includes a second support plate (23), a second top plate (24) vertically fixed to the front side of the top of the second support plate (23), a third cylinder (25) fixed to the bottom of the second top plate (24), a first lifting plate (26) fixed to the output end of the third cylinder (25), and a first clamping plate (27) and a second clamping plate (28) located above the first limiting channel (6). The second connecting plate (29) and the third connecting plate (30) are vertically fixed to the two sides of the bottom of the first lifting plate (26), respectively. The left side of the first clamping plate (27) is rotatably connected to the second connecting plate (29) via a rotating shaft. The lower part of the inner side of the second clamping plate (28) is connected to the fourth cylinder (31) via a telescopic rod on the right side. The fourth cylinder (31) is connected to the second rotating motor (32) fixed to the lower part of the third connecting plate (30) via a rotating shaft. The second clamping plate (28) is driven to move left and right by the fourth cylinder (31) so as to realize the fixing and loosening of the bolt (34) by the first clamping plate (27) and the second clamping plate (28). The first clamping plate (27) and the second clamping plate (28) are rotated by the second rotating motor (32). The second detection camera (14) is fixed to the lower part of the front side of the second support plate (23).

6. A sorting device for bolt inspection according to claim 4, characterized in that, The first rear baffle (2) has an opening (2.1) at the position corresponding to the second magnetic connecting rod (21). The size of the opening (2.1) is smaller than the length of the bolt (34) and larger than the width of the second magnetic connecting rod (21).

7. A sorting device for bolt inspection according to claim 1, characterized in that, A vibrating feeder (33) is also provided on the outside of the workbench (1), and the discharge port of the vibrating feeder (33) is connected to the left end of the first limiting channel (6).

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