Screw thread detection equipment for nut

Abstract

The utility model discloses nut thread detection equipment, which belongs to the field of nut detection setting and comprises a base, a mounting seat is fixedly mounted on one side of the base, columns are arranged at four corners of the bottom end of the base and four corners of the bottom end of the mounting seat, a groove is formed in the top end of the mounting seat, and a conveying belt is arranged in the groove. A plurality of barrier strips distributed in a linear array are arranged on the side wall of the conveying belt, a second supporting plate is fixedly mounted at the top end of the mounting base, the section of the second supporting plate is in an inverted L shape, a scanning assembly is arranged at the bottom of the horizontal section of the second supporting plate, and a second mounting plate is fixedly mounted on one side of the mounting base. According to the utility model, through the arrangement of the scanning assembly, the nuts can be placed in order, when the infrared scanner is matched with the receiving end, whether the nuts are in a vertical state or not is detected, and when the nuts in the vertical state are detected, the corresponding warning lamp flickers to achieve an alarm effect, so that a worker can adjust the nuts in time conveniently, and subsequent scanning detection is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of nut detection devices, and more specifically, to a nut thread detection device. Background Technology

[0002] A nut is a fastener that is screwed onto a bolt or threaded rod to secure the machine. It is an essential component in all manufacturing machinery. Depending on the material, nuts are classified into several types, such as carbon steel, stainless steel, and non-ferrous metals. Nuts are used to tightly connect mechanical equipment. Only nuts and bolts of the same specifications can be connected together through their internal threads. After the nuts are manufactured, the threads of the nuts need to be inspected to ensure proper selection.

[0003] Existing nut thread testing equipment places the nuts on a platform and then performs thread inspection using a testing device. However, manual loading may cause some nuts to stand upright or be placed upside down on the platform, potentially affecting the subsequent thread inspection and reducing the equipment's efficiency. Therefore, to address these issues, we propose a new nut thread testing device. Utility Model Content

[0004] To solve the above problems, this utility model provides a nut thread detection device, which adopts the following technical solution:

[0005] A thread inspection device for nuts includes a base, a mounting seat fixedly installed on one side of the base, columns at the four corners of the bottom of the base and the mounting seat, a groove at the top of the mounting seat, a conveyor belt inside the groove, a plurality of baffles arranged in a linear array on the side wall of the conveyor belt, a second support plate fixedly installed at the top of the mounting seat, the second support plate having an inverted "L" shaped cross section, a scanning component at the bottom of the horizontal section of the second support plate, and a second mounting plate fixedly installed on one side of the mounting seat, the second mounting plate having a second robotic arm.

[0006] The base has an installation slot, and a rotating disk is rotatably mounted on the top of the base. Multiple placement cylinders arranged in a circular array are rotatably mounted on the top of the rotating disk. A first support plate is fixedly mounted on one side of the base. An image measuring instrument is mounted on the side of the first support plate near the rotating disk. A driving assembly is provided between the rotating disk and the base. A rotating assembly is provided between the multiple placement cylinders and the base. A first mounting plate is fixedly mounted on the side of the base away from the mounting base. A first robotic arm is mounted on the top of the first mounting plate. Connecting posts are provided at the ends of both the first and second robotic arms. Magnetic rings are provided on the sides of both connecting posts away from the first and second robotic arms. Storage slots are provided on the sides of both connecting posts near the magnetic rings on the same side. Ejection assemblies are provided in both storage slots.

[0007] By adopting the above technical solution, when the equipment is in use, multiple baffles are set on the conveyor belt in multiple placement areas, making it convenient for workers to neatly place the nuts on the conveyor belt. After the nuts are placed, they are then transported towards the base by the conveyor belt. A scanning component is installed on the second support plate to scan and detect whether any nuts are placed vertically on the conveyor belt. When a vertical nut is found on the conveyor belt, the conveyor belt stops transporting, and the scanning component issues an alarm, thus reminding the workers to make adjustments and helping to maintain the detection efficiency of the equipment. After the nut is transported by the conveyor belt to the mounting base near the base, the second robotic arm drives the magnetic ring to move onto the nut, and the magnetic ring attracts the nut, thus achieving adsorption. The material handling mechanism works by using a second robotic arm to move the nut above the placement cylinder, where an ejector assembly pushes the nut out of the magnetic ring, thus unloading it. The drive assembly then drives a rotating disk to rotate the placement cylinder synchronously, moving the nut below the image measuring instrument. The image measuring instrument inspects the nut's threads. The second robotic arm, drive assembly, and conveyor belt work together to continuously feed the nut. The first robotic arm drives the magnetic ring and ejector assembly to remove the nut from the placement cylinder. The nut's height is greater than the cylinder's depth. Two existing storage frames can be placed on the side of the base away from the mounting seat, facilitating the separate placement of qualified and unqualified products.

[0008] Furthermore, the scanning component includes multiple infrared sensors disposed at the bottom of the horizontal section of the second support plate. The multiple infrared sensors are arranged in a linear array at the bottom of the horizontal section of the second support plate. Multiple warning lights matching the infrared sensors are provided at the top of the horizontal section of the second support plate. A receiving end matching the infrared sensors is provided at the top of the conveyor belt.

[0009] By adopting the above technical solution, the staff places the nuts on the conveyor belt one by one, and the conveyor belt transports the nuts to the area below the second support plate. With the cooperation of the infrared sensor and the receiver, the system can scan and detect whether the nuts are placed upside down or upright. When the nuts are detected to be upside down or upright, the conveyor belt stops transporting the nuts, and the corresponding warning light flashes to sound an alarm, thus reminding the staff to make adjustments. After the nuts are adjusted, the conveyor belt transports the nuts again, which helps to maintain the detection effect of the equipment.

[0010] Furthermore, the drive assembly includes a rotating column rotatably mounted on the inner wall of the bottom end of the mounting groove. A driven gear is fixedly sleeved on the lower side wall of the rotating column. A reduction motor is fixedly mounted on the inner wall of the bottom end of the mounting groove. A drive gear is fixedly sleeved on the side wall of the output shaft of the reduction motor. The drive gear and the driven gear mesh. The top end of the rotating column passes through the base and is fixedly connected to the bottom end of the rotating disk.

[0011] By adopting the above technical solution, the drive gear is driven by the geared motor to rotate, the drive gear drives the driven gear to rotate, the driven gear drives the rotating column to rotate, the rotating column drives the rotating disk to rotate, and the rotating disk drives the placement cylinder and nut to rotate synchronously. This can adjust the position of the nut, making it easier for the image measuring instrument to perform surface inspection on the nut, and enabling the equipment to continuously inspect the nut, thereby improving the inspection efficiency of the equipment.

[0012] Furthermore, an annular groove is provided at the top of the base, and multiple sliders arranged in a circular array are rotatably installed in the annular groove, with the tops of the multiple sliders being fixedly connected to the bottom of the rotating disk.

[0013] By adopting the above technical solution, when the rotating disk rotates above the base, the rotating disk, along with the slider, slides within the annular groove at the top of the base. The arrangement of multiple sliders serves to support and stabilize the rotating disk, which helps to maintain the stability of the rotating disk's rotation.

[0014] Furthermore, the rotating assembly includes a transmission gear fixedly sleeved on the lower side wall of the placement cylinder, a rubber ring fixedly installed on the inner wall of the bottom end of the placement cylinder, a gear ring provided above the rotating disk, and multiple stabilizing plates arranged in a ring array fixedly installed between the bottom of the gear ring and the top of the base, and the multiple transmission gears mesh with the gear ring.

[0015] By adopting the above technical solution, when the rotating disk rotates, the rotating disk drives the placement cylinder to rotate synchronously. Through the cooperation of the transmission gear and gear ring, when the rotating disk rotates, the placement cylinder located at the top of the rotating disk rotates on its own, and the placement cylinder drives the internal nut to rotate synchronously, which facilitates the equipment to scan and detect the nut.

[0016] Furthermore, the ejection assembly includes a telescopic rod fixedly installed on the inner wall of the receiving groove on the side away from the magnetic ring on the same side, and an ejection rod is fixedly installed at the ends of both telescopic rods.

[0017] By adopting the above technical solution, when the first and second robotic arms move to the corresponding positions with the nut, the telescopic rod drives the same group of ejector rods to slide, so that the ejector rods push the nut out, causing the nut to disengage from the magnetic rings in the same group, thus achieving the function of unloading.

[0018] Furthermore, a baffle is fixedly installed on the top of the mounting base near the base, and a movable groove matching the baffle is provided at the bottom end of the baffle.

[0019] By adopting the above technical solution, the baffle on the top of the mounting base serves to position the nut, which helps the nut to detach from the conveyor belt when the conveyor belt is conveying the nut.

[0020] In summary, this utility model has the following beneficial technical effects:

[0021] (1) In this utility model, by setting up the scanning component, the staff places the nut above the conveyor belt and the nut is transported by the conveyor belt. The conveyor belt is provided with multiple placement areas by the baffles to facilitate the neat placement of the nut. When the infrared scanner and the receiver work together, it can detect whether the nut is in an upright state. When an upright nut is detected, the corresponding warning light will flash to achieve the alarm effect, so that the staff can adjust it in time for subsequent scanning and detection.

[0022] (2) In this utility model, the first robotic arm and the second robotic arm work together to load and unload materials. The nut is scanned by the influence measuring instrument to perform the detection function. The rotating disk is driven to rotate by the drive component, and the rotating disk rotates synchronously with the placement cylinder, which facilitates the continuous detection of the nut by the equipment and helps to improve the detection efficiency of the equipment.

[0023] (3) In this utility model, when the drive assembly drives the rotating disk to rotate with the placement cylinder, through the cooperation of the transmission gear and the gear ring, when the rotating disk rotates, the transmission gear rotates with the same group of placement cylinders under the action of the gear ring, thereby causing the nut to rotate, which facilitates the equipment to scan the threads of the nut from multiple angles. Attached Figure Description

[0024] Figure 1 A first-view structural schematic diagram of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged view of A in the middle;

[0026] Figure 3 This utility model Figure 1 Enlarged view of B in the middle;

[0027] Figure 4 This is a structural schematic diagram from a second perspective of the present invention;

[0028] Figure 5 This is a cross-sectional view of the present invention;

[0029] Figure 6 This utility model Figure 5 Enlarged view of C;

[0030] Figure 7 This utility model Figure 5 Enlarged view of D;

[0031] Figure 8 This utility model Figure 5 A magnified view of E in the middle.

[0032] Explanation of the labels in the diagram:

[0033] 1. Base; 2. First mounting plate; 3. First robotic arm; 4. First support plate; 5. Image measuring instrument; 6. Second robotic arm; 7. Second support plate; 8. Warning light; 9. Infrared sensor; 10. Stop bar; 11. Mounting base; 12. Baffle; 13. Gear ring; 14. Stabilizing plate; 15. Rotating disk; 16. Placement cylinder; 17. Transmission gear; 18. Connecting column; 19. Magnetic ring; 20. Ejector rod; 21. Second mounting plate; 22. Groove; 23. Conveyor belt; 24. Mounting slot; 25. Gearbox; 26. Drive gear; 27. Driven gear; 28. Rotating column; 29. ​​Rubber ring; 30. Telescopic rod; 31. Storage slot. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following is in conjunction with the appendix Figure 1-8 The present invention will be described in further detail below.

[0038] Please see Figure 1-8A thread detection device for nuts includes a base 1, a mounting seat 11 fixedly installed on one side of the base 1, columns at the four corners of the bottom of the base 1 and the mounting seat 11, a groove 22 at the top of the mounting seat 11, a conveyor belt 23 inside the groove 22, and multiple baffles 10 arranged in a linear array on the side wall of the conveyor belt 23, a second support plate 7 fixedly installed at the top of the mounting seat 11, the second support plate 7 having an inverted "L" shaped cross section, a scanning component at the bottom of the horizontal section of the second support plate 7, the scanning component including multiple infrared sensors 9 arranged in a linear array at the bottom of the horizontal section of the second support plate 7, multiple warning lights 8 matching the infrared sensors 9 at the top of the horizontal section of the second support plate 7, a receiving end matching the infrared sensors 9 at the top of the conveyor belt 23, and a baffle 12 fixedly installed at the top of the section of the mounting seat 11 near the base 1, the bottom of the baffle 12 having a moving groove matching the baffles 10.

[0039] When the equipment is in use, multiple baffles 10 are set on the conveyor belt 23 in multiple placement areas, which makes it easy for the staff to place the nuts neatly on the conveyor belt 23. After the nuts are placed, they are then transported to the base 1 by the conveyor belt 23. The conveyor belt 23 transports the nuts to the area below the second support plate 7. With the cooperation of the infrared sensor 9 and the receiver, the device can scan and detect whether the nuts are placed upside down or upright. When the nuts are detected to be upside down or upright, the conveyor belt 23 stops transporting and the corresponding warning light 8 flashes to remind the staff to make adjustments. After the nuts are adjusted, the conveyor belt 23 transports the nuts again, which helps to maintain the detection effect of the equipment. The baffle 12 set on the top of the mounting base 11 plays the role of positioning the nuts, which helps the nuts to detach from the conveyor belt 23 when it transports the nuts, making it easier for the equipment to accurately pick up and transport them later.

[0040] A second mounting plate 21 is fixedly mounted on one side of the mounting base 11. The second mounting plate 21 is equipped with a second robotic arm 6. A first mounting plate 2 is fixedly mounted on the side of the base 1 away from the mounting base 11. A first robotic arm 3 is provided on the top of the first mounting plate 2. Both the first robotic arm 3 and the second robotic arm 6 are provided with connecting posts 18 at their ends. A magnetic ring 19 is provided on the side of each connecting post 18 away from the first robotic arm 3 and the second robotic arm 6. A storage groove 31 is opened on the side of each connecting post 18 near the magnetic ring 19 on the same side. An ejection assembly is provided in each of the two storage grooves 31. The ejection assembly includes components fixedly installed in the storage groove 31 away from the magnetic ring on the same side. The telescopic rods 30 on one side of the inner wall of 19 have two push-out rods 20 fixedly installed at their ends. The magnetic ring 19 is driven by the second robotic arm 6 to move onto the nut. The magnetic ring 19 attracts the nut, which can play the role of attracting and picking up the material. The second robotic arm 6 drives the nut to move above the placement cylinder 16. Then, the telescopic rods 30 drive the push-out rods 20 of the same group to slide, so that the push-out rods 20 push the nut out and place it in the placement cylinder 16, which can play the role of placing the nut. The placement cylinder 16 is equipped with a rubber ring 29, which can restrict and stabilize the nut, which helps to maintain the stability of the nut's rotation.

[0041] The base 1 has an installation groove 24. A rotating disk 15 is rotatably mounted on the top of the base 1. Multiple placement cylinders 16 arranged in a circular array are rotatably mounted on the top of the rotating disk 15. A first support plate 4 is fixedly mounted on one side of the base 1. An image measuring instrument 5 is provided on the side of the first support plate 4 near the rotating disk 15. A drive assembly is provided between the rotating disk 15 and the base 1. The drive assembly includes a rotating column 28 rotatably mounted on the inner wall of the bottom end of the installation groove 24. A driven gear 27 is fixedly sleeved on the lower side wall of the rotating column 28. A reduction motor 25 is fixedly mounted on the inner wall of the bottom end of the installation groove 24. A drive gear 26 is fixedly sleeved on the side wall of the output shaft of the reduction motor 25. The drive gear 26 and the driven gear 27 mesh. The top end of the rotating column 28 passes through the base 1 and is fixedly connected to the bottom end of the rotating disk 15.

[0042] After the nut is placed, the drive gear 26 is driven to rotate by the reduction motor 25, the drive gear 26 drives the driven gear 27 to rotate, the driven gear 27 drives the rotating column 28 to rotate, and the rotating column 28 drives the rotating disk 15 to rotate. The rotating disk 15, along with the placement cylinder 16 and the nut, rotates synchronously, which can adjust the position of the nut, making it easier for the image measuring instrument 5 to perform surface inspection on the nut. This allows for continuous inspection of the nut by the equipment, improving the inspection efficiency of the equipment. The top of the base 1 has an annular groove, in which multiple sliders arranged in a circular array are rotatably installed. The tops of the multiple sliders are fixedly connected to the bottom of the rotating disk 15. When the rotating disk 15 rotates above the base 1, the rotating disk 15 slides in the annular groove at the top of the base 1 with the sliders. The arrangement of multiple sliders supports and stabilizes the rotating disk 15, which helps to maintain the stability of the rotation of the rotating disk 15.

[0043] After the nut scanning is completed, the first robotic arm 3 drives the magnetic ring 19 of the same group to move, so that the magnetic ring 19 moves above the nut after detection. The magnetic ring 19 attracts the nut after detection, which can play the role of picking up the material. Two existing storage frames can be placed on the side of the base 1 away from the mounting seat 11, which is convenient for placing qualified and unqualified products separately.

[0044] A rotating assembly is provided between multiple placement cylinders 16 and the base 1. The rotating assembly includes a transmission gear 17 fixedly sleeved on the lower side wall of the placement cylinder 16. A rubber ring 29 is fixedly installed on the inner wall of the bottom end of the placement cylinder 16. A gear ring 13 is provided above the rotating disk 15. Multiple stabilizing plates 14 arranged in a circular array are fixedly installed between the bottom of the gear ring 13 and the top of the base 1. Multiple transmission gears 17 mesh with the gear ring 13. When the rotating disk 15 rotates, the rotating disk 15 drives the placement cylinders 16 to rotate synchronously. Through the cooperation of the transmission gear 17 and the gear ring 13, when the rotating disk 15 rotates, the placement cylinder 16 located on the top of the rotating disk 15 rotates on its own. The placement cylinder 16 drives the internal nut to rotate synchronously, which facilitates the equipment to scan and detect the nut.

[0045] The implementation principle of this utility model embodiment is as follows: When the equipment is in use, multiple baffles 10 are set in multiple placement areas on the conveyor belt 23, which facilitates the workers to neatly place the nuts on the conveyor belt 23. After the nuts are placed, they are then conveyed towards the base 1 by the conveyor belt 23. The second support plate 7 is equipped with a scanning component, which scans and detects whether there are any nuts placed vertically on the conveyor belt 23. When there are vertical nuts on the conveyor belt 23, the conveyor belt 23 stops conveying, and the scanning component issues an alarm, which reminds the workers to make adjustments and helps maintain the detection efficiency of the equipment. After the nuts are conveyed by the conveyor belt 23 to the end of the mounting base 11 near the base 1, the second robotic arm 6 drives the magnetic ring 19 to move onto the nuts. The magnetic ring 19 attracts the nuts, thus achieving the desired effect. To achieve the function of adsorption and material collection, the second robotic arm 6 drives the nut to move above the placement cylinder 16, and then the ejection component ejects the nut from the magnetic ring 19, thus achieving the function of unloading. Subsequently, the drive component drives the rotating disk 15 to rotate synchronously with the placement cylinder 16, so that the nut moves below the image measuring instrument 5. The image measuring instrument 5 detects the threads of the nut. Then, through the cooperation of the second robotic arm 6, the drive component and the conveyor belt 23, the function of continuous feeding is achieved. The first robotic arm 3 drives the magnetic ring 19 and the ejection component to operate, thus achieving the function of removing the nut from the placement cylinder 16. The height of the nut is higher than the internal depth of the placement cylinder 16. Two existing storage frames can be placed on the side of the base 1 away from the mounting seat 11, which is convenient for separating qualified and unqualified products.

[0046] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A thread testing device for nuts, comprising a base (1), characterized in that: A mounting base (11) is fixedly installed on one side of the base (1). The four corners of the bottom of the base (1) and the mounting base (11) are provided with columns. A groove (22) is opened at the top of the mounting base (11). A conveyor belt (23) is provided in the groove (22). A plurality of baffles (10) are arranged in a straight array on the side wall of the conveyor belt (23). A second support plate (7) is fixedly installed at the top of the mounting base (11). The cross section of the second support plate (7) is inverted "L". A scanning component is provided at the bottom of the horizontal section of the second support plate (7). A second mounting plate (21) is fixedly installed on one side of the mounting base (11). A second robotic arm (6) is provided on the second mounting plate (21). The base (1) has an installation groove (24) inside. A rotating disk (15) is rotatably mounted on the top of the base (1). Multiple placement cylinders (16) arranged in a circular array are rotatably mounted on the top of the rotating disk (15). A first support plate (4) is fixedly mounted on one side of the base (1). An image measuring instrument (5) is provided on the side of the first support plate (4) near the rotating disk (15). A driving assembly is provided between the rotating disk (15) and the base (1). A rotating assembly is provided between the multiple placement cylinders (16) and the base (1). A first mounting plate (2) is fixedly installed on the side of the base (1) away from the mounting base (11). A first mechanical arm (3) is provided on the top of the first mounting plate (2). A connecting post (18) is provided at the end of the first mechanical arm (3) and the second mechanical arm (6). A magnetic ring (19) is provided on the side of the two connecting posts (18) away from the first mechanical arm (3) and the second mechanical arm (6). A storage groove (31) is opened on the side of the two connecting posts (18) close to the magnetic ring (19) on the same side. An ejection component is provided in the two storage grooves (31).

2. The thread detection device for nuts according to claim 1, characterized in that: The scanning component includes multiple infrared sensors (9) located at the bottom of the horizontal section of the second support plate (7). The multiple infrared sensors (9) are arranged in a linear array at the bottom of the horizontal section of the second support plate (7). Multiple warning lights (8) matching the infrared sensors (9) are provided at the top of the horizontal section of the second support plate (7). A receiving end matching the infrared sensors (9) is provided at the top of the conveyor belt (23).

3. The thread detection device for nuts according to claim 1, characterized in that: The drive assembly includes a rotating column (28) rotatably mounted on the inner wall of the bottom end of the mounting groove (24). A driven gear (27) is fixedly sleeved on the lower side wall of the rotating column (28). A geared motor (25) is fixedly mounted on the inner wall of the bottom end of the mounting groove (24). A drive gear (26) is fixedly sleeved on the side wall of the output shaft of the geared motor (25). The drive gear (26) and the driven gear (27) mesh. The top end of the rotating column (28) passes through the base (1) and is fixedly connected to the bottom end of the rotating disk (15).

4. The thread detection device for nuts according to claim 1, characterized in that: The base (1) has an annular groove at its top, and multiple sliders arranged in a circular array are rotatably installed in the annular groove. The tops of the multiple sliders are fixedly connected to the bottom of the rotating disk (15).

5. The thread detection device for nuts according to claim 1, characterized in that: The rotating assembly includes a transmission gear (17) fixedly sleeved on the lower side wall of the placement cylinder (16), a rubber ring (29) fixedly installed on the inner wall of the bottom end of the placement cylinder (16), a gear ring (13) is provided above the rotating disk (15), and a plurality of stabilizing plates (14) arranged in a ring array are fixedly installed between the bottom of the gear ring (13) and the top of the base (1), and the plurality of transmission gears (17) mesh with the gear ring (13).

6. The thread detection device for nuts according to claim 1, characterized in that: The ejection assembly includes a telescopic rod (30) fixedly installed on the inner wall of the receiving groove (31) away from the magnetic ring (19) on the same side, and an ejection rod (20) is fixedly installed at the ends of both telescopic rods (30).

7. The thread detection device for nuts according to claim 1, characterized in that: A baffle (12) is fixedly installed on the top of the mounting base (1) near the base (1), and a movable groove matching the baffle (10) is opened at the bottom of the baffle (12).

Images