A bolt manufacturing apparatus and its manufacturing method

Abstract

This invention discloses a bolt preparation device and method, relating to the field of fastener production technology. The device includes a base and a control module. An assembly mechanism is rotatably connected to the upper surface of the base via bearings. The assembly mechanism is located on the left side of the base, and a detection mechanism is located on the right side of the assembly mechanism. A turntable is rotatably connected to the upper surface of the base via bearings. A first funnel and a second funnel are respectively located on the front side of the base. Several material conveying mechanisms are located on the upper side of the base. A transmission ring is fixedly connected to the upper inner wall of the turntable, and a first motor is fixedly connected to the inner wall of the base. This invention, by incorporating a rotating drum for further tightening of the nut and its corresponding processing module, can acquire the torque change curve during the tightening process in real time, thereby determining the fitting accuracy of the bolt pair. It features strong practicality and the ability to precisely screen bolt pairs.

Description

Technical Field

[0001] This invention relates to the field of fastener manufacturing technology, specifically to a bolt preparation device and its preparation method. Background Technology

[0002] Fasteners are a type of mechanical part used for fastening connections and are widely used. The most common fasteners are bolts and nuts. These fasteners achieve their fastening function through threads or interference fits during assembly.

[0003] Traditional bolt assembly mainly relies on manual operation or semi-automated equipment for nut installation and tightening, which has problems such as high labor intensity, low efficiency and poor consistency. In addition, the nut feeding, alignment, tightening and quality inspection often rely on multiple independent devices, resulting in complex equipment layout, difficulty in synchronization and high cost. Furthermore, some bolt assemblies are prone to thread damage or plating damage due to bumps during processing or handling, which traditional inspection methods cannot identify in time during assembly, thus affecting connection quality and service life.

[0004] Chinese patent CN117007229B discloses a torque-shear type high-strength bolt connection pair fastening axial force detection device. This device manually adjusts the tightening and support components, clamps the bolt connection pair to be tested using the connecting components, applies axial tension to the device body, and uses a tension sensor to detect and provide feedback on the preload force in real time. The device simulates the actual bolt installation state, making the test results closer to real-world working conditions.

[0005] Although this solution provides a compact and easy-to-operate testing method, considering its technical background and existing pain points, the following goals remain unfulfilled or need improvement: While force transmission and support components are designed to simulate the installation state, dynamic load or multi-directional force simulation is not introduced, which may lead to deviations in the test data and affect accuracy. Therefore, there is an urgent need for a bolt preparation device that is compact, functionally integrated, has high assembly efficiency, and possesses intelligent testing capabilities, in order to achieve efficient and automated assembly of bolt pairs and online quality monitoring, thereby improving the overall intelligence level of the production line and the product qualification rate. Summary of the Invention

[0006] The purpose of this invention is to provide a bolt manufacturing apparatus and method thereof to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a bolt preparation device, including a base and a control module, wherein an assembly mechanism is rotatably connected to the upper surface of the base via a bearing, an assembly mechanism is provided on the left side of the base, a detection mechanism is provided on the right side of the assembly mechanism, a turntable is rotatably connected to the upper surface of the base via a bearing, a first funnel and a second funnel are respectively provided on the front side of the base, a plurality of material conveying mechanisms are provided on the upper side of the base, a transmission ring is fixedly connected to the upper side of the inner wall of the turntable, a first motor is fixedly connected to the inner wall of the base, a gear is fixedly connected to the output end of the first motor, and the outer wall of the gear meshes with the inner wall of the transmission ring;

[0008] A rotating ring is fixedly connected to the inner wall of the turntable, a laser detection module is provided on the inner side of the base, a number of reflection points are provided on the rotating ring, and the rotation path of the reflection points passes through the detection end of the laser detection module. The laser detection module is electrically connected to the control module.

[0009] The assembly mechanism includes a fixing component and a rubber cylinder on the fixing component. The rubber cylinder can move horizontally relative to the base and can rotate. The rubber cylinder can install a nut onto the bolt surface.

[0010] The detection mechanism includes a detection component and a rotating cylinder on the detection component. The rotating cylinder can be translated relative to the assembly mechanism and can be rotated. The rotating cylinder can further rotate and tighten the nut on the bolt.

[0011] It enables efficient arrangement and linkage of various components, providing basic support for the overall automated process, improving structural coordination efficiency, and achieving precise installation and tightening of nuts through the translation and rotation of the structural rubber cylinder, thereby improving assembly efficiency and fit accuracy.

[0012] According to the above technical solution, the position of the reflection point on the rotating ring corresponds to the position of the material conveying mechanism on the turntable. The first motor is electrically connected to the control module. The first motor can drive the turntable to rotate through gears, and the rotating ring can rotate synchronously with the turntable. The laser detection module can locate the rotation position of the turntable through the reflection point on the rotating ring. By cooperating with the detection component through the reflection point, the position of the rotating station can be accurately determined, ensuring accurate alignment of the rotation and improving the synchronization of the action.

[0013] According to the above technical solution, a fixing plate is provided on the left side and the right side of the base. The two fixing plates are symmetrically arranged with the middle of the base as the axis of symmetry. An electric telescopic rod is provided on each fixing plate. A pressure block is fixedly connected to the lower end of the electric telescopic rod. The rotation path of the material conveying mechanism passes under the pressure block. The arrangement of the fixing plate, the electric telescopic rod and the pressure block realizes the auxiliary positioning and limitation of the spatial path of the rotating component, thereby improving the structural stability during the transmission process.

[0014] According to the above technical solution, the fixing component includes a bracket, the right end of which is fixedly connected to the lower side of the base, the upper left side of which is fixedly connected to a first slide rail, the upper surface of which is slidably connected to a first slider, the inner wall of which is fixedly connected to a second motor, the output end of which is fixedly connected to the left side of the rubber cylinder, and the upper middle part of the bracket is also fixedly connected to a guide trough, which is a hollow structure with an opening on the upper side. The lower side of the guide trough has a discharge port that runs through from left to right, and the inner diameter of the left side of the discharge port is smaller than the inner diameter of the right side of the discharge port.

[0015] According to the above technical solution, the first slider and the first slide rail are connected by a linear motor. Both the linear motor and the second motor are electrically connected to the control module. The middle part of the rubber cylinder and the middle part of the guide trough are located on the same central axis. The outer diameter of the rubber cylinder is consistent with the inner diameter of the left side of the discharge hole on the guide trough. The right end of the rubber cylinder can pass through the guide trough and move to the right side of the guide trough. The rubber cylinder can put the nuts filled inside the guide trough onto the bolts, realizing the orderly delivery and automatic putting of the nuts, ensuring that the assembly process is continuous and efficient, and avoiding misalignment and jamming.

[0016] According to the above technical solution, the material conveying mechanism includes an installation groove. Several installation grooves are provided on the upper side of the turntable. Two first conductive contact pieces are fixedly connected to the lower inner wall of the installation groove. A rotating pile is provided inside the installation groove. A placement groove is provided on the upper side of the rotating pile. A fourth motor is also fixedly connected to the rotating pile. One end of the fourth motor is fixedly connected to the inner wall of the installation groove near the middle of the base. An electromagnet is fixedly connected to the lower side of the rotating pile. Two second conductive contact pieces are provided on the outer wall of the rotating pile. The two second conductive contact pieces are electrically connected to the two electrodes of the electromagnet, and the two second conductive contact pieces are in contact with the two first conductive contact pieces. Magnetic adsorption is used to achieve stable positioning of the bolt pair, preventing slippage or displacement during rotation and movement.

[0017] According to the above technical solution, the fourth motor is electrically connected to the control module. The fourth motor can drive the rotating pile to rotate. The bolt can be placed inside the placement slot. The two first conductive contacts are electrically connected to the external power supply. The first conductive contacts and the second conductive contacts are both located on the lower side of the rotating pile. The electromagnet is located on the lower side of the rotating pile. When the electromagnet is energized, it can generate magnetic force to realize the dynamic clamping and release of the bolt pair during the transfer process, thereby improving the flexible control capability of the rotating loading station.

[0018] According to the above technical solution, the detection component includes a fixed base, a processing module is provided on the outer wall of the fixed base, the processing module is electrically connected to the control module, a second slider is slidably connected to the upper surface of the fixed base, the second slider is connected to the fixed base via a linear motor, and the linear motor at the connection between the second slider and the fixed base is electrically connected to the control module, a third slider is slidably connected to the upper side of the second slider, one side of the outer wall of the third slider is connected to the second slider via a first spring, a cylinder is rotatably connected to the side of the third slider near the base via a bearing, a torque detection module is fixedly connected to the side of the third slider away from the base, the torque detection module is electrically connected to the processing module, the output end of the torque detection module passes through the third slider and is fixedly connected to the outer wall of the cylinder, a third motor is provided at the input end of the torque detection module, the third motor is electrically connected to the control module, a second spring is fixedly connected to the inner wall of the cylinder away from the base, the other end of the second spring is fixedly connected to the end of the rotating cylinder away from the base, and the outer wall of the rotating cylinder is slidably connected to the inner wall of the cylinder, realizing automatic fixing and tightening of the nut and real-time torque detection during the tightening process, improving tightening accuracy and assembly consistency.

[0019] According to the above technical solution, the rotating drum has a through opening at both ends, and an insulating plate is slidably connected to the inner wall of the rotating drum. Two conductive blocks are arranged on the side of the insulating plate near the base, and both conductive blocks are electrically connected to the processing module. A third spring is fixedly connected to the side of the insulating plate away from the base, and the other end of the third spring is fixedly connected to the inner wall of the rotating drum. The conductivity and connection integrity of the bolt pair surface are monitored by a resistance detection structure to achieve defect screening and quality control.

[0020] A bolt manufacturing method includes the following steps:

[0021] S1: The control module drives multiple rotating piles to move sequentially to the loading position via the first motor. The robot places the bolts into the rotating piles, and the bolt heads are fixed by the pressure blocks. Then, the assembly mechanism assembles the nuts to be installed onto the bolts.

[0022] S2: The control module starts the linear motor to drive the rubber cylinder to move towards the rotating pile side, and at the same time controls the second motor to drive the rubber cylinder to rotate, so that the nut is fitted onto the bolt thread section under the action of friction, and the nut is initially screwed in to fit.

[0023] S3: The rotating pile moves to the position of the detection mechanism. The control module drives the third motor to rotate the drum and further tighten the nut. At the same time, the torque change curves fed back by the drum and the torque detection module are collected in real time and compared with the preset curve to determine whether the matching accuracy of the connection pair meets the standard.

[0024] S4: During the screwing-in process of the nut, the resistance of the bolt pair is detected by the conductive block set in the rotating drum. The change of resistance value at different contact points is analyzed to determine whether the plating of the bolt pair is damaged.

[0025] S5: The control module determines whether the current bolt pair is a qualified or unqualified product based on the matching torque and resistance detection results. When the rotating pile moves to the set position, it drives the fourth motor to flip the corresponding rotating pile to unload the bolt pair into the qualified or unqualified collection area, thus completing the automatic sorting and discharge.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are: by providing a rubber cylinder for assembling nuts and a guide groove for filling nuts, the present invention can realize the sequential falling and accurate fitting of nuts, improve the installation efficiency and positioning accuracy of nuts, and avoid nut installation deviation or omission.

[0027] By setting up a rotating drum for driving the nut to tighten further and its matching processing module, the torque change curve during the tightening process can be obtained in real time, thereby judging the fitting accuracy of the bolt pair and realizing the dynamic and precise screening of the connection pair.

[0028] By incorporating conductive blocks inside the rotating drum and using a control module to identify resistance changes at different locations, the system can determine whether the plating on the contact surface of the bolt pair is damaged during nut screwing in, achieving non-destructive electrical detection with integrated functionality and structure. Furthermore, by using a turntable and electromagnets within the rotating station, along with the control of the second and first conductive contacts, the system can maintain the stability of the bolt pair during movement and rotation, preventing misalignment or falling due to vibration or inertia during assembly, thus improving the reliability and continuity of the overall automated process. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0032] Figure 3 This is a partial structural schematic diagram of the present invention;

[0033] Figure 4 This is a schematic diagram of the assembly mechanism of the present invention;

[0034] Figure 5 This is a partial structural schematic diagram of the present invention;

[0035] Figure 6 This is a schematic diagram of the material conveying mechanism of the present invention;

[0036] Figure 7 This is a schematic diagram of the detection mechanism structure of the present invention;

[0037] Figure 8 This is a schematic diagram of the internal structure of the testing mechanism of the present invention; in the figure: 1. Base; 2. Assembly mechanism; 3. Testing mechanism; 4. Turntable; 5. First funnel; 6. Second funnel; 7. Material conveying mechanism; 8. Transmission ring; 9. First motor; 10. Gear; 11. Laser detection module; 12. Rotary ring; 13. Fixing plate; 14. Electric telescopic rod; 15. Pressure block; 201. Bracket; 202. First slide rail; 203. First slider; 204. Second motor; 205. Rubber cylinder; 206. Guide trough; 3 01. Fixed base; 302. Processing module; 303. Second slider; 304. Third slider; 305. First spring; 306. Insert cylinder; 307. Torque detection module; 308. Third motor; 309. Second spring; 310. Rotating cylinder; 311. Insulating plate; 312. Conductive block; 313. Third spring; 701. Mounting slot; 702. First conductive contact; 703. Rotating post; 704. Placement slot; 705. Fourth motor; 706. Electromagnet; 707. Second conductive contact. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1, please refer to Figure 1-6 The present invention provides a technical solution: a bolt preparation device, including a base 1 and a control module. An assembly mechanism 2 is rotatably connected to the upper surface of the base 1 via a bearing. An assembly mechanism 2 is arranged on the left side of the base 1, and a detection mechanism 3 is arranged on the right side of the assembly mechanism 2. A turntable 4 is rotatably connected to the upper surface of the base 1 via a bearing. A first funnel 5 and a second funnel 6 are respectively arranged on the front side of the base 1. A plurality of material conveying mechanisms 7 are arranged on the upper side of the base 1. A transmission ring 8 is fixedly connected to the upper side of the inner wall of the turntable 4. A first motor 9 is fixedly connected to the inner wall of the base 1. A gear 10 is fixedly connected to the output end of the first motor 9. The outer wall of the gear 10 meshes with the inner wall of the transmission ring 8.

[0040] A rotating ring 12 is fixedly connected to the inner wall of the turntable 4. A laser detection module 11 is provided on the inner side of the base 1. Several reflection points are provided on the rotating ring 12, and the rotation path of the reflection points passes through the detection end of the laser detection module 11. The laser detection module 11 is electrically connected to the control module. The position of the reflection point on the rotating ring 12 corresponds to the position of the material conveying mechanism 7 on the turntable 4. The first motor 9 is electrically connected to the control module. The first motor 9 can drive the turntable 4 to rotate through the gear 10, and the rotating ring 12 can rotate synchronously with the turntable 4. The laser detection module 11 can locate the rotation position of the turntable 4 through the reflection point on the rotating ring 12. Fixed plates 13 are provided on the left side and the right side of the base 1. The two fixed plates 13 are symmetrically arranged with the middle of the base 1 as the axis of symmetry. Electric telescopic rods 14 are provided on the fixed plates 13. A pressure block 15 is fixedly connected to the lower end of the electric telescopic rod 14. The rotation path of the material conveying mechanism 7 passes through the lower side of the pressure block 15.

[0041] Assembly mechanism 2 includes a fixing component and a rubber cylinder 205 on the fixing component. The rubber cylinder 205 can move horizontally relative to the base 1 and can rotate. The rubber cylinder 205 can install a nut onto the bolt surface. The fixing component includes a bracket 201. The right end of the bracket 201 is fixedly connected to the lower side of the base 1. A first slide rail 202 is fixedly connected to the upper side of the left end of the bracket 201. A first slider 203 is slidably connected to the upper surface of the first slide rail 202. A second motor 204 is fixedly connected to the inner wall of the first slider 203. The output end of the second motor 204 is fixedly connected to the left side of the rubber cylinder 205. A guide groove 20 is also fixedly connected to the upper middle part of the bracket 201. 6. The guide trough 206 is a hollow structure with an opening on the upper side. The guide trough 206 has a discharge port that runs through the left and right sides. The inner diameter of the left side of the discharge port is smaller than the inner diameter of the right side of the discharge port. The first slider 203 is connected to the first slide rail 202 through a linear motor. The linear motor and the second motor 204 are both electrically connected to the control module. The middle part of the rubber cylinder 205 is located on the same central axis as the middle part of the guide trough 206. The outer diameter of the rubber cylinder 205 is consistent with the inner diameter of the left side of the discharge hole on the guide trough 206. The right end of the rubber cylinder 205 can pass through the guide trough 206 and move to the right side of the guide trough 206. The rubber cylinder 205 can put the nut filled inside the guide trough 206 onto the bolt.

[0042] The material conveying mechanism 7 includes an installation slot 701. Several installation slots 701 are provided on the upper side of the turntable 4. A rotating pile 703 is provided inside the installation slot 701. A placement slot 704 is provided on the upper side of the rotating pile 703. A fourth motor 705 is also fixedly connected to the rotating pile 703. One end of the fourth motor 705 is fixedly connected to the inner wall of the installation slot 701 near the middle of the base 1. The fourth motor 705 is electrically connected to the control module. The fourth motor 705 can drive the rotating pile 703 to rotate. Bolts can be placed inside the placement slot 704.

[0043] During the application of this device, the control module starts the first motor 9 to rotate the gear 10, which in turn drives the transmission ring 8 and the turntable 4 to rotate. The laser detection module 11 detects the movement path of the rotating ring 12. When the rotating ring 12 moves to the detection end of the laser detection module 11, the control module briefly stops the first motor 9, and the robot in the production line places the bolt into the placement groove 704 before it moves to the assembly mechanism 2. At this time, the hexagonal head of the bolt is placed inside the placement groove 704, and the threaded screw of the bolt is located on the outer side of the rotating pile 703 away from the middle of the base 1. The nut is evenly filled into the guide material groove 206. The nuts inside the guide material groove 206 can fall down to the discharge port on the lower side of the guide material groove 206 by gravity bolts. After the first motor 9 stops, the control module starts the electric telescopic rod 14 to drive the pressure block 15 to press down and fix the bolt. At the same time, the control module starts the linear electric motor at the connection between the first slide rail 202 and the first slider 203. The machine drives the first slider 203 and the second motor 204 to move towards the guide trough 206, thereby causing the rubber cylinder 205 to push the nut out of the guide trough 206. At the same time, the second motor 204 is started to drive the rubber cylinder 205 to rotate, so that the rubber cylinder 205, through friction with the nut, puts the nut onto the bolt end, completing the matching assembly of the bolt and nut. Then, the linear motor at the connection between the first slide rail 202 and the first slider 203 drives the first slider 203 to reset. At this time, the control module records that the rotating pile 703 is in the loading state and counts the number of times the rotating pile 703 moves. Then, the control module continues to start the first motor 9 to drive the turntable 4 to rotate to complete continuous loading. When the rotating pile 703 moves to the first funnel 5, the control module detects that the number of times the rotating pile 703 has moved has reached the predetermined number, and starts the fourth motor 705 to drive the rotating pile 703 to rotate 180 degrees, so that the rotating pile 703 completes the up and down flip, thereby causing the bolt inside the placement trough 704 to fall into the first funnel 5 to complete the discharge.

[0044] Example 2, please refer to Figure 1-8The present invention provides a technical solution: the detection mechanism 3 includes a detection component and a rotating cylinder 310 on the detection component. The rotating cylinder 310 can translate relative to the assembly mechanism 2 and can rotate. The rotating cylinder 310 can further rotate and tighten the nut on the bolt. The detection component includes a fixed base 301. A processing module 302 is provided on the outer wall of the fixed base 301. The processing module 302 is electrically connected to a control module. A second slider 303 is slidably connected to the upper surface of the fixed base 301. The second slider 303 is connected to the fixed base 301 through a linear motor. The linear motor at the connection between the second slider 303 and the fixed base 301 is electrically connected to the control module. A third slider 304 is slidably connected to the upper side of the second slider 303. One side of the outer wall of the third slider 304 is connected by a first spring. Spring 305 is connected to the second slider 303. The third slider 304 is rotatably connected to the insert 306 via a bearing on the side near the base 1. Torque detection module 307 is fixedly connected to the side of the third slider 304 away from the base 1. Torque detection module 307 is electrically connected to processing module 302. The output end of torque detection module 307 passes through the third slider 304 and is fixedly connected to the outer wall of insert 306. The input end of torque detection module 307 is provided with a third motor 308. The third motor 308 is electrically connected to control module. The inner wall of insert 306 is fixedly connected to the side away from the base 1. The other end of the second spring 309 is fixedly connected to the end of rotating cylinder 310 away from the base 1. The outer wall of rotating cylinder 310 is slidably connected to the inner wall of insert 306.

[0045] After the rotating pile 703 completes the bolt loading, the control module counts the number of times the rotating pile 703 moves. When the rotating pile 703 moves to the detection mechanism 3, the electric telescopic rod 14 is activated to drive the pressure block 15 to press down the bolt for fixation. At this time, after the rotating pile 703 stops moving, the linear motor at the connection between the second slider 303 and the fixed seat 301 is activated to drive the third slider 304 to move towards one side of the rotating pile 703. At the same time, the control module activates the third motor 308, causing the torque detection module 307 to drive the insert cylinder 306 and the rotating cylinder 310 to rotate. As the rotating cylinder 310 moves towards the bolt, the nut on the bolt will eventually be inserted into the interior of the rotating cylinder 310. The connection between the rotating cylinder 310 and the insert 306 is via a second spring 309. When the angle between the inner wall of the rotating cylinder 310 and the outer wall of the nut differs, the movement of the rotating cylinder 310 can be temporarily slowed by the rotating cylinder 310 retracting into the insert 306 while rotating, compressing the second spring 309. As the displacement of the rotating cylinder 310 stops, it rotates itself, allowing the inner wall of the rotating cylinder 310 to rotate to an angle that matches the outer wall of the nut, thus inserting the nut into the rotating cylinder 310. Subsequently, the rotating cylinder 310 can drive the nut to rotate together, while the second slider 303 continues to move, causing the nut to be inserted into the rotating cylinder 310 to the side away from the base 1. At this point, the second slider 303 stops moving from the fixed base 301. The third motor 308, following the linear motor at the connection point, continuously drives the insert 306 to rotate. The first spring 305 buffers the lateral pulling force generated during the rotation of the nut by the rotating drum 310. The torque detection module 307 continuously outputs the rotational torque of the rotating drum 310 to the processing module 302. The processing module 302 outputs the changing trend of the feedback torque during the rotation of the rotating drum 310 to the control module. The control module compares this trend with a preset value. When the difference exceeds a threshold, it counts the number of movements of the rotating pile 703, then stops the third motor 308. The linear motor at the connection point between the second slider 303 and the fixed base 301 drives the third slider 306. 4. Reset, so that the rotating drum 310 is removed from the bolt pair. At this time, the tightness of the nut and bolt is higher. After the rotating pile 703 continues to move, the control module records the number of times the rotating pile 703 moves. After it reaches the upper side of the second funnel 6, the fourth motor 705 is started to drive the rotating pile 703 to flip, so that the nut loaded on the upper side of the rotating pile 703 falls into the second funnel 6 and is discharged into the unqualified product area. Then the rotating pile 703 is started to flip and reset. The rotating pile 703 does not flip after it moves to the upper side of the first funnel 5. If the torque of the bolt and nut is up to standard, the rotating pile 703 moves to the upper side of the first funnel 5 and then completes the flipping and unloading, so that the bolt pair is discharged into the qualified product area.

[0046] Example 3, please refer to Figure 1-8The present invention provides a technical solution: the rotating drum 310 has an opening that runs vertically through it, and an insulating plate 311 is slidably connected to the inner wall of the rotating drum 310. Two conductive blocks 312 are arranged on the side of the insulating plate 311 near the base 1. Both conductive blocks 312 are electrically connected to the processing module 302. A third spring 313 is fixedly connected to the side of the insulating plate 311 away from the base 1. The other end of the third spring 313 is fixedly connected to the inner wall of the rotating drum 310.

[0047] After the nut is inserted into the rotating cylinder 310, the outer wall of the nut contacts the two conductive blocks 312. At this time, the processing module 302 energizes one conductive block 312 and detects the current at the other conductive block 312. Since the current flows through the bolt and the nut, the resistance of the current can be detected. In this way, the resistance change of the nut and the bolt at different contact positions can be detected during the movement of the nut. Then, the resistance can be used to determine whether the coating on the surface of the nut and the bolt is damaged, so as to achieve the purpose of screening out bolt pairs with coating defects during the fit test of the bolt pair.

[0048] Example 4, please refer to Figure 1-8 The present invention provides a technical solution: an electromagnet 706 is fixedly connected to the lower side of a rotating pile 703, and two second conductive contacts 707 are provided on the outer wall of the rotating pile 703. The two second conductive contacts 707 are electrically connected to the two electrodes of the electromagnet 706 respectively, and the two second conductive contacts 707 are in contact with two first conductive contacts 702 respectively. Two first conductive contacts 702 are fixedly connected to the lower side of the inner wall of the mounting groove 701, and the two first conductive contacts 702 are electrically connected to an external power source. The first conductive contacts 702 and the second conductive contacts 707 are both located on the lower side of the rotating pile 703. The electromagnet 706 is located on the lower side of the rotating pile 703. The electromagnet 706 can generate magnetic force after being energized.

[0049] During the process of transporting the bolt assembly via the rotating pile 703, the electromagnet 706 is energized and generates magnetism because the second conductive contact 707 and the first conductive contact 702 remain in contact. This causes the bolt assembly on the upper side of the rotating pile 703 to be attracted downward and fixed, keeping it stable during movement and preventing it from shifting. When the rotating pile 703 is driven to rotate and unload by the fourth motor 705, the second conductive contact 707 and the first conductive contact 702 are misaligned, causing the electromagnet 706 to be de-energized, thus allowing the bolt assembly to be smoothly removed.

[0050] A bolt manufacturing method includes the following steps:

[0051] S1: The control module drives multiple rotating piles 703 to move sequentially to the loading position through the first motor 9. The mechanical arm places the bolt into the rotating pile 703, and after the bolt head is fixed by the pressure block 15, the assembly mechanism 2 assembles the nut to be installed onto the bolt.

[0052] S2: The control module starts the linear motor to drive the rubber cylinder 205 to move towards the rotating pile 703, and at the same time controls the second motor 204 to drive the rubber cylinder 205 to rotate, so that the nut is fitted onto the bolt thread section under the action of friction, and the nut is initially screwed in to fit.

[0053] S3: The rotating pile 703 moves to the position of the detection mechanism 3. The control module drives the third motor 308 to rotate the rotating drum 310 and further tighten the nut. At the same time, the torque change curves fed back by the rotating drum 310 and the torque detection module 307 are collected in real time and compared with the preset curve to determine whether the matching accuracy of the connection pair meets the standard.

[0054] S4: During the screwing-in process of the nut, the resistance of the bolt pair is detected by the conductive block 312 set in the rotating drum 310. The change of resistance value at different contact points is analyzed to determine whether the plating of the bolt pair is damaged.

[0055] S5: The control module determines whether the current bolt pair is a qualified or unqualified product based on the matching torque and resistance detection results. When the rotating pile 703 moves to the set position, it drives the fourth motor 705 to flip the corresponding rotating pile 703 to unload the bolt pair into the qualified or unqualified collection area, thus completing the automatic sorting and discharge.

[0056] This bolt preparation device uses a turntable 4 to achieve continuous transfer of bolt pairs between multiple stations. Combined with the coordinated actions of the rubber cylinder 205, pressure block 15, rotating drum 310, and conductive block 312, it achieves precise assembly and efficient testing of the bolt pairs. The device accurately installs the nut, filled in the guide groove 206, onto the bolt end via the rubber cylinder 205. Then, the torque detection module 307 drives the rotating drum 310 to further tighten the nut, and simultaneously transmits the feedback torque through the processing module 302 to the control module for comparison and judgment, achieving precision screening of the connection pair. At the same time, the conductive block 312 detects the resistance change trend during the nut screwing process to determine whether the plating at the bolt-nut contact area is intact. During the transfer process, the bolt pair is stably held by an electromagnet 706, ensuring accurate positioning during movement and flipping. Finally, based on the control results, the fourth motor 705 controls the unloading direction of the station, automatically classifying and discharging qualified and unqualified products, improving product consistency, screening accuracy, and the overall automation level of the production line.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A bolt manufacturing device comprising a base (1) and a control module, characterized in that: The upper surface of the base (1) is rotatably connected with the assembling mechanism (2) through a bearing, the left side of the base (1) is provided with the assembling mechanism (2), the right side of the assembling mechanism (2) is provided with the detection mechanism (3), the upper surface of the base (1) is rotatably connected with the rotating disc (4) through a bearing, the front side of the base (1) is respectively provided with the first funnel (5) and the second funnel (6), the upper side of the base (1) is provided with a plurality of material conveying mechanisms (7), the inner wall upper side of the rotating disc (4) is fixedly connected with the transmission ring (8), the inner wall of the base (1) is fixedly connected with the first motor (9), the output end of the first motor (9) is fixedly connected with the gear (10), and the outer wall of the gear (10) is engaged with the inner wall of the transmission ring (8); The inner wall of the rotating disc (4) is fixedly connected with the rotating ring (12), the inner side of the base (1) is provided with the laser detection module (11), a plurality of reflection points are arranged on the rotating ring (12), and the rotation path of the reflection points passes through the detection end of the laser detection module (11), the laser detection module (11) is electrically connected with the control module, and is used for positioning the rotation position of the rotating disc (4); The assembling mechanism (2) comprises a fixed assembly and a rubber cylinder (205) on the fixed assembly, the rubber cylinder (205) can translate in the left-right direction relative to the base (1), and the rubber cylinder (205) can rotate, the rubber cylinder (205) can install a nut on the surface of a bolt; The detection mechanism (3) comprises a detection assembly and a rotating drum (310) on the detection assembly, the rotating drum (310) can translate relative to the assembling mechanism (2), and the rotating drum (310) can rotate, the rotating drum (310) can further rotate and fasten the nut on the bolt; The detection assembly includes a fixed seat (301), an outer wall of the fixed seat (301) is provided with a processing module (302), the processing module (302) is electrically connected with a control module, a second sliding block (303) is slidably connected to the upper surface of the fixed seat (301), the second sliding block (303) is connected with the fixed seat (301) by a linear motor, and the linear motor at the connection between the second sliding block (303) and the fixed seat (301) is electrically connected with the control module, a third sliding block (304) is slidably connected to the upper side of the second sliding block (303), one side of the outer wall of the third sliding block (304) is connected with the second sliding block (303) by a first spring (305), a plug cylinder (306) is rotatably connected to one side of the third sliding block (304) close to the base (1) through a bearing, a torque detection module (307) is fixedly connected to one side of the third sliding block (304) away from the base (1), the torque detection module (307) is electrically connected with the processing module (302), the output end of the torque detection module (307) penetrates through the outer wall of the third sliding block (304) and the plug cylinder (306) and is fixedly connected, a third motor (308) is arranged at the input end of the torque detection module (307), the third motor (308) is electrically connected with the control module, a second spring (309) is fixedly connected to the inner wall of the plug cylinder (306) away from the base (1), one end of the second spring (309) is fixedly connected with one end of a rotating cylinder (310) away from the base (1), and the outer wall of the rotating cylinder (310) is slidably connected with the inner wall of the plug cylinder (306). An opening penetrating up and down is formed in the rotating cylinder (310), and an insulating plate (311) is slidably connected to the inner wall of the rotating cylinder (310), two conductive blocks (312) are arranged on one side of the insulating plate (311) close to the base (1), the two conductive blocks (312) are electrically connected with the processing module (302), and a third spring (313) is fixedly connected to one side of the insulating plate (311) away from the base (1).

2. A bolt making apparatus according to claim 1, wherein: The position of the reflection point on the rotating ring (12) corresponds to the position where the material conveying mechanism (7) is arranged on the rotating disc (4), the first motor (9) is electrically connected with the control module, the first motor (9) drives the rotating disc (4) to rotate through the gear (10), and the rotating ring (12) rotates synchronously with the rotating disc (4), and the laser detection module (11) positions the rotating position of the rotating disc (4) through the reflection point on the rotating ring (12).

3. A bolt making apparatus according to claim 2, wherein: The left side of the base (1) and the right side of the base (1) are provided with fixed plates (13), the two fixed plates (13) are symmetrically arranged with the middle part of the base (1) as the axis of symmetry, and the electric telescopic rods (14) are arranged on the fixed plates (13), the lower ends of the electric telescopic rods (14) are fixedly connected with the pressing blocks (15), and the rotating path of the material conveying mechanism (7) passes below the pressing blocks (15), and the pressing blocks (15) can be lowered to the upper side of the material conveying mechanism (7) to limit the bolt pair.

4. A bolt making apparatus according to claim 3, wherein: The fixed assembly includes a support (201), the right end of the support (201) is fixedly connected with the lower side of the base (1), the upper side of the left end of the support (201) is fixedly connected with a first sliding rail (202), the upper surface of the first sliding rail (202) is slidably connected with a first sliding block (203), the inner wall of the first sliding block (203) is fixedly connected with a second motor (204), the output end of the second motor (204) is fixedly connected with the left side of a rubber cylinder (205), and the upper side of the middle part of the support (201) is also fixedly connected with a guide chute (206), and the guide chute (206) is a hollow structure with an upper opening, and a left-right through discharge port is formed in the lower side of the guide chute (206), and the left inner diameter of the discharge port is smaller than the right inner diameter of the discharge port.

5. A bolt making apparatus according to claim 4, wherein: The first sliding block (203) and the first sliding rail (202) are connected through a linear motor, and the linear motor and the second motor (204) are electrically connected with the control module, the middle part of the rubber cylinder (205) and the middle part of the guide chute (206) are located on the same central axis, the outer diameter of the rubber cylinder (205) is consistent with the left inner diameter of the discharge port of the guide chute (206), and the right end of the rubber cylinder (205) can pass through the guide chute (206) and move to the right side of the guide chute (206), and the rubber cylinder (205) can set the nut filled in the guide chute (206) on the bolt.

6. A bolt making apparatus according to claim 5, wherein: The material conveying mechanism (7) includes a mounting groove (701), a plurality of mounting grooves (701) are formed in the upper side of the rotating disc (4), the inner wall of the mounting groove (701) is fixedly connected with two first conductive tabs (702) on the lower side, a rotating pile (703) is arranged in the mounting groove (701), a placing groove (704) is formed in the upper side of the rotating pile (703), a fourth motor (705) is further fixedly connected to the rotating pile (703), one end of the fourth motor (705) is fixedly connected with the inner wall of the mounting groove (701) near the middle part of the base (1), an electromagnet (706) is fixedly connected to the lower side of the rotating pile (703), two second conductive tabs (707) are arranged on the outer wall of the rotating pile (703), the two second conductive tabs (707) are electrically connected with the two electrodes of the electromagnet (706) respectively, and the two second conductive tabs (707) are in contact with the two first conductive tabs (702) respectively.

7. A bolt making apparatus according to claim 6, wherein: The fourth motor (705) is electrically connected with the control module, the fourth motor (705) can drive the rotating pile (703) to rotate, the bolt can be placed in the placing groove (704), and the two first conductive tabs (702) are electrically connected with an external power supply, the first conductive tabs (702) and the second conductive tabs (707) are arranged at the lower side of the rotating pile (703), the electromagnet (706) is arranged at the lower side of the rotating pile (703), and the electromagnet (706) generates a magnetic force to attract and fix the bolt pair after being electrified, so as to avoid the deviation of the bolt pair during movement.

8. A method of producing a bolt according to claim 7, characterized in that: The method comprises the following steps: S1: The control module drives the plurality of rotating piles (703) to move to the loading position in turn through the first motor (9), and places the bolt in the rotating pile (703) through the mechanical hand, so that the bolt head is fixed through the pressing block (15), and then the assembly mechanism (2) is used to assemble the nut to be assembled to the bolt; S2: The control module starts the linear motor to drive the rubber cylinder (205) to move to one side of the rotating pile (703), and controls the second motor (204) to drive the rubber cylinder (205) to rotate, so that the nut is sleeved to the threaded section of the bolt under the action of the friction force, and the nut is preliminarily screwed into cooperation; S3: The rotating pile (703) moves to the detection mechanism (3) position, the control module drives the third motor (308) to drive the rotating drum (310) to rotate and further tighten the nut, and simultaneously collects the torque change curve of the rotating drum (310) and the torque detection module (307) in real time, and compares the torque change curve with the preset curve to judge whether the matching precision of the connecting pair meets the standard; S4: In the process of screwing the nut, the conductive block (312) arranged in the rotating drum (310) is used for resistance detection of the bolt pair, and whether the plating layer of the bolt pair is damaged is judged according to the resistance value change of different contact points; S5: The control module judges whether the current bolt pair is a qualified or unqualified product according to the matching torque and the resistance detection result, drives the fourth motor (705) to overturn the corresponding rotating pile (703) when the rotating pile (703) moves to the set position, and discharges the bolt pair to the qualified or unqualified collection area, and completes the automatic classification and discharging.

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