Bolt preparation device and preparation method thereof

Abstract

The invention discloses a bolt manufacturing device and method, and relates to the technical field of fastener production, the bolt manufacturing device comprises a base and a control module, the upper surface of the base is rotationally connected with an assembling mechanism through a bearing, the assembling mechanism is arranged on the left side of the base, and a detection mechanism is arranged on the right side of the assembling mechanism; the device comprises a base, the upper surface of the base is rotationally connected with a rotating disc through a bearing, the front side of the base is provided with a first funnel and a second funnel, the upper side of the base is provided with a plurality of material conveying mechanisms, the upper side of the inner wall of the rotating disc is fixedly connected with a transmission ring, and the inner wall of the base is fixedly connected with a first motor; through the arrangement of the rotary drum used for driving the nut to be further screwed and the processing module matched with the rotary drum, the torque change curve in the nut screwing-in process can be obtained in real time in the screwing process, then the matching precision of the bolt pair is judged, and the bolt pair screening device has the beneficial effects of being high in practicability and capable of screening the bolt pair at high precision.

Description

Technical Field

[0001] The present invention relates to the technical field of fastener production, in particular to a bolt preparation device and a preparation method thereof. Background Art

[0002] Fasteners are a type of mechanical parts used for fastening connections and are extremely widely used. The most common fasteners are bolts, nuts, etc. These fasteners achieve the fastening function through threads or interference fit during assembly.

[0003] Traditional bolt assembly relies primarily on manual operation or semi-automated equipment for nut installation and tightening, resulting in high labor intensity, low efficiency, and poor consistency. Nut loading, alignment, tightening, and quality inspection often rely on multiple independent devices, resulting in complex equipment layout, synchronization difficulties, and high costs. Furthermore, some bolt pairs are prone to thread damage or plating breakage due to collisions during processing or handling, making it difficult for traditional inspection methods to identify these issues in a timely manner during assembly, thus affecting connection quality and service life. Existing Chinese patent publication number CN117007229B discloses a torsional shear type high-strength bolt connection tightening axial force detection device. This device manually adjusts the tensioning and supporting components, uses the connection assembly to clamp the bolt connection to be tested, applies axial tension to the device body, and uses a tension sensor to detect and provide real-time feedback on the preload force. The device simulates the actual state of bolt installation, making the test results closer to real-world working conditions. Although this solution provides a compact and easy-to-use testing method, compared with its technical background and existing pain points, the following goals are still not fully achieved or have room for improvement. Although the force transmission component and support component 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 the accuracy: Therefore, there is an urgent need for a bolt preparation device with a compact structure, integrated functions, high assembly efficiency and intelligent detection capabilities 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

[0004] The object of the present invention is to provide a bolt preparation device and a preparation method thereof to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a bolt preparation device, comprising a base and a control module, wherein the upper surface of the base is rotatably connected to an assembly mechanism via a bearing, the left side of the base is provided with an assembly mechanism, the right side of the assembly mechanism is provided with a detection mechanism, the upper surface of the base is rotatably connected to a turntable via a bearing, a first funnel and a second funnel are respectively provided on the front side of the base, a plurality of material transport 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 is meshed with the inner wall of the transmission ring; 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 plurality 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, and the laser detection module is electrically connected to the control module; The assembly mechanism includes a fixing assembly and a rubber tube on the fixing assembly. The rubber tube can translate left and right relative to the base and can rotate on its own. The rubber tube can install the nut on the bolt surface. The detection mechanism includes a detection assembly and a rotating drum on the detection assembly, wherein the rotating drum can translate relative to the assembly mechanism and can rotate, and the rotating drum can further rotate and tighten the nut on the bolt; It realizes efficient arrangement and linkage of various components, provides basic support for the overall automation process, improves structural coordination efficiency, and realizes precise installation and tightening of nuts through the translation and rotation of the structural rubber cylinder, thereby improving assembly efficiency and matching accuracy.

[0006] According to the above technical solution, the position of the reflection point on the rotating ring is set to correspond to the position of the material transport 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, and the position of the rotating station can be accurately determined by cooperating with the detection component through the reflection point to ensure accurate positioning of the rotation and improve the synchronization of the movement.

[0007] According to the above technical solution, fixed plates are provided on the left side and the right side of the base, and the two fixed plates are symmetrically arranged with the middle part of the base as the symmetry axis, and electric telescopic rods are provided on the fixed plates. The lower end of the electric telescopic rod is fixedly connected to a pressure block, and the rotation path of the material transport mechanism passes through the lower side of the pressure block. The arrangement of the fixed plates, the electric telescopic rod and the pressure block realizes auxiliary positioning and limiting of the spatial path of the rotating part, thereby improving the structural stability during the transmission process.

[0008] According to the above technical solution, the fixing assembly includes a bracket, the right end of the bracket is fixedly connected to the lower side of the base, the upper side of the left end of the bracket is fixedly connected to a first slide rail, the upper surface of the first slide rail is slidably connected to a first slider, the inner wall of the first slider is fixedly connected to a second motor, the output end of the second motor is fixedly connected to the left side of the rubber tube, and the middle upper side of the bracket is also fixedly connected to a guide trough, and the guide trough is a hollow structure with an opening on the upper side, and a discharge port is provided on the lower side of the guide trough that passes through the left and right sides, 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.

[0009] According to the above technical solution, the first slider is connected to the first slide rail through a linear motor, and the linear motor and the second motor are electrically connected to the control module. The middle of the rubber tube and the middle of the guide trough are located on the same central axis, the outer diameter of the rubber tube is consistent with the inner diameter on the left side of the discharge hole on the guide trough, and the right end of the rubber tube can pass through the guide trough and move to the right side of the guide trough. The rubber tube can sleeve the nut loaded inside the guide trough onto the bolt, realizing orderly transportation and automatic sleeve of the nut, ensuring a continuous and efficient assembly process, and avoiding dislocation and jamming.

[0010] According to the above technical solution, the material transport mechanism includes a mounting groove, a plurality of mounting grooves are provided on the upper side of the turntable, two first conductive contacts are fixedly connected to the lower side of the inner wall of the mounting groove, a rotating pile is provided inside the mounting groove, a placement groove is provided on the upper side of the rotating pile, and 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 mounting groove close to the middle of the base, an electromagnet is fixedly connected to the lower side of the rotating pile, and two second conductive contacts are provided on the outer wall of the rotating pile, and the two second conductive contacts are respectively electrically connected to the two electrodes of the electromagnet, and the two second conductive contacts are respectively in contact with the two first conductive contacts, so that the bolt pair is firmly positioned by magnetic adsorption to prevent slippage or displacement during rotation and movement.

[0011] 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, and the two first conductive contacts are electrically connected to the external power supply, the first conductive contact and the second conductive contact are both arranged at the lower side of the rotating pile, and the electromagnet is arranged at the lower side of the rotating pile. When the electromagnet is energized, it can generate magnetic force to realize dynamic clamping and release of the bolt pair during the transportation process, thereby improving the flexible control capability of the rotary loading station.

[0012] According to the above technical solution, the detection component includes a fixed seat, the outer wall of the fixed seat is provided with a processing module, the processing module is electrically connected to the control module, the upper surface of the fixed seat is slidably connected to the second slider, the second slider is connected to the fixed seat through a linear motor, and the linear motor at the connection between the second slider and the fixed seat is electrically connected to the control module, the upper side of the second slider is slidably connected to the third slider, one side of the outer wall of the third slider is connected to the second slider through a first spring, the side of the third slider close to the base is rotatably connected to the insert cylinder through a bearing, and the side of the third slider away from the base is fixedly connected to the torque detection module. 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 insert, the input end of the torque detection module is provided with a third motor, the output end of the third motor is connected to the output end of the torque detection module, and the third motor is electrically connected to the control module. A second spring is fixedly connected to the side of the inner wall of the insert away from the base, and the other end of the second spring is fixedly connected to the end of the rotating cylinder away from the base. The outer wall of the rotating cylinder is slidably connected to the inner wall of the insert, thereby realizing automatic fixing and tightening of the nut and real-time detection of torque during the tightening process, thereby improving tightening accuracy and assembly consistency.

[0013] According to the above technical solution, an opening is provided on the rotating drum extending upward and downward, and an insulating plate is slidably connected to the inner wall of the rotating drum. Two conductive blocks are provided on the side of the insulating plate close to 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 surface conductivity and connection integrity of the bolt pair are monitored through the resistance detection structure to achieve defect screening and quality control.

[0014] A method for preparing a bolt comprises the following steps: S1: The control module drives the plurality of rotating piles to move to the loading position in sequence via the first motor, and the manipulator places the bolts into the rotating piles. After the bolt heads are fixed by the pressing blocks, the nut to be installed is assembled onto the bolts by the assembly mechanism; S2: The control module starts the linear motor to drive the rubber tube to move toward the rotating pile, and at the same time controls the second motor to drive the rubber tube to rotate, so that the nut is sleeved onto the bolt thread section under the action of friction force, achieving the initial screw-in fit of the nut; S3: The rotating pile moves to the detection mechanism position, and the control module drives the third motor to rotate the rotating drum and further tighten the nut. At the same time, the torque change curve fed back by the rotating drum and the torque detection module is collected in real time and compared with the preset curve to determine whether the matching accuracy of the connection pair meets the standard; S4: During the screwing process of the nut, the resistance of the bolt pair is tested by the conductive block set in the rotating drum. The change of resistance value at different contact points is analyzed to determine whether the bolt pair coating is damaged; 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 to the qualified or unqualified collection area, completing automatic classification and discharging.

[0015] Compared with the prior art, the present invention has the following beneficial effects: by providing a rubber tube for assembling nuts and a guide trough for loading nuts, the present invention can achieve sequential dropping and accurate installation of nuts, thereby improving nut installation efficiency and positioning accuracy, and avoiding skewed or missing installation of nuts; By providing a rotating drum for driving the nut to further tighten and its matching processing module, the torque change curve of the nut during the tightening process can be obtained in real time, and then the matching accuracy of the bolt pair can be judged, realizing dynamic and accurate screening of the connection pair; By providing a conductive block inside the rotating drum and combining it with a control module to identify the resistance value changes at different positions, it is possible to determine whether the plating on the contact surface of the bolt pair is damaged during the nut screwing process, thus achieving non-destructive electrical detection with integrated functional structure. By providing a turntable and an electromagnet set in the rotating workstation, and coordinating the control of the second conductive contact piece and the first conductive contact piece, the bolt pair can maintain a stable posture during movement and flipping, preventing dislocation or falling due to vibration or inertia during assembly, and improving the reliability and process continuity of the overall automation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the rear structure of the present invention; Figure 3 It is a partial structural schematic diagram of the present invention; Figure 4 It is a schematic structural diagram of the assembly mechanism of the present invention; Figure 5 It is a schematic diagram of the local structure of the present invention; Figure 6 It is a structural schematic diagram of the material transport mechanism of the present invention; Figure 7 It is a structural schematic diagram of the detection mechanism of the present invention; Figure 8 It is a schematic diagram of the internal structure of the detection mechanism of the present invention; In the figure: 1. Base; 2. Assembly mechanism; 3. Detection mechanism; 4. Turntable; 5. First funnel; 6. Second funnel; 7. Material transport mechanism; 8. Transmission ring; 9. First motor; 10. Gear; 11. Laser detection module; 12. Turntable; 13. Fixing plate; 14. Electric telescopic rod; 15. Pressing block; 201. Bracket; 202. First slide rail; 203. First slider; 204. Second motor; 205. Rubber cylinder; 206. Guide trough; 301. Fixing seat; 3 02. Processing module; 303. Second slider; 304. Third slider; 305. First spring; 306. Insertion 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 pile; 704. Placement slot; 705. Fourth motor; 706. Electromagnet; 707. Second conductive contact. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] For 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, the upper surface of the base 1 is rotatably connected to an assembly mechanism 2 through a bearing, the left side of the base 1 is provided with the assembly mechanism 2, the right side of the assembly mechanism 2 is provided with a detection mechanism 3, the upper surface of the base 1 is rotatably connected to a turntable 4 through a bearing, the front side of the base 1 is respectively provided with a first funnel 5 and a second funnel 6, a plurality of material transport mechanisms 7 are provided 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, and the outer wall of the gear 10 is meshed with the inner wall of the transmission ring 8; A swivel 12 is fixedly connected to the inner wall of the turntable 4, and a laser detection module 11 is provided on the inner side of the base 1. A number of reflection points are provided on the swivel 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 swivel 12 is corresponding to the position of the material transport mechanism 7 set 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 swivel 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 points on the swivel 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 part of the base 1 as the axis of symmetry, and an electric telescopic rod 14 is provided on the fixed plate 13. The lower end of the electric telescopic rod 14 is fixedly connected to a pressure block 15, and the rotation path of the material transport mechanism 7 passes through the lower side of the pressure block 15. The assembly mechanism 2 includes a fixing component and a rubber tube 205 on the fixing component. The rubber tube 205 can be translated left and right relative to the base 1, and the rubber tube 205 can rotate. The rubber tube 205 can install the nut to 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. The upper side of the left end of the bracket 201 is fixedly connected to the first slide rail 202. The upper surface of the first slide rail 202 is slidably connected to the first slider 203. The inner wall of the first slider 203 is fixedly connected to the second motor 204. The output end of the second motor 204 is fixedly connected to the left side of the rubber tube 205. The upper middle side of the bracket 201 is also fixedly connected to the guide trough 20 6, and the guide trough 206 is a hollow structure with an upper opening, and a discharge port is opened on the lower side of the guide trough 206 to pass 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, and the linear motor and the second motor 204 are electrically connected to the control module. The middle of the rubber tube 205 and the middle of the guide trough 206 are located on the same central axis. The outer diameter of the rubber tube 205 is consistent with the inner diameter of the left side of the discharge hole on the guide trough 206, and the right end of the rubber tube 205 can pass through the guide trough 206 and move to the right side of the guide trough 206. The rubber tube 205 can sleeve the nut filled in the guide trough 206 on the bolt; The material transport mechanism 7 includes a mounting slot 701. A plurality of mounting slots 701 are provided on the upper side of the turntable 4. A rotating pile 703 is provided inside the mounting slot 701. A placement slot 704 is provided on the upper side of the rotating pile 703. A fourth motor 705 is fixedly connected to the rotating pile 703. One end of the fourth motor 705 is fixedly connected to one side of the inner wall of the mounting 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, and a bolt can be placed inside the placement slot 704. During the application of this device, the control module starts the first motor 9 to rotate the gear 10, and then the gear 10 drives the transmission ring 8 and the turntable 4 to rotate, and the laser detection module 11 detects the moving path of the swivel 12. When the swivel 12 moves to the detection end of the laser detection module 11, the control module briefly stops the first motor 9, and the manipulator in the production line places the bolt inside the placement groove 704 before moving to the assembly mechanism 2. At this time, the hexagonal head of the bolt is placed inside the placement groove 704, and the screw with a thread groove on the bolt is located on the outside of the rotating pile 703 away from the middle of the base 1. The nuts are evenly loaded inside the guide trough 206. The nuts inside the guide trough 206 can fall down to the discharge port on the lower side of the guide trough 206 through the gravity bolt. After the first motor 9 stops, the control module starts the electric telescopic rod 14 to drive the pressure block 15 to press down to 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 toward the side of the guide trough 206, thereby causing the rubber tube 205 to push the nut out of the guide trough 206, and at the same time starting the second motor 204 to drive the rubber tube 205 to rotate, so that the rubber tube 205 puts the nut on the end of the bolt through friction with the nut, completing the matching assembly of the bolt and the nut, and 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 movements of the rotating pile 703. 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 movements of the rotating pile 703 reaches the predetermined number, and then starts the fourth motor 705 to drive the rotating pile 703 to rotate 180 degrees, so that the rotating pile 703 is turned upside down, thereby causing the bolts inside the placement slot 704 to fall into the first funnel 5 to complete the discharge.

[0019] For 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 drum 310 on the detection component, the rotating drum 310 can translate relative to the assembly mechanism 2, and the rotating drum 310 can rotate, and the rotating drum 310 can further rotate and tighten the nut on the bolt, the detection component includes a fixed seat 301, the outer wall of the fixed seat 301 is provided with a processing module 302, the processing module 302 is electrically connected to the control module, the upper surface of the fixed seat 301 is slidably connected to the second slider 303, the second slider 303 is connected to the fixed seat 301 through a linear motor, and the linear motor at the connection between the second slider 303 and the fixed seat 301 is electrically connected to the control module, the upper side of the second slider 303 is slidably connected to the third slider 304, and one side of the outer wall of the third slider 304 is connected to the second slider 303 through a first spring 305 , the side of the third slider 304 close to the base 1 is rotatably connected to the insert cylinder 306 through a bearing, and the side of the third slider 304 away from the base 1 is fixedly connected to the torque detection module 307, the torque detection module 307 is electrically connected to the processing module 302, the output end of the torque detection module 307 passes through the third slider 304 and is fixedly connected to the outer wall of the insert cylinder 306, the input end of the torque detection module 307 is provided with a third motor 308, the output end of the third motor 308 is connected to the output end of the torque detection module 307, the third motor 308 is electrically connected to the control module, and the inner wall of the insert cylinder 306 away from the base 1 is fixedly connected to the second spring 309, the other end of the second spring 309 is fixedly connected to the end of the rotating cylinder 310 away from the base 1, and the outer wall of the rotating cylinder 310 is slidably connected to the inner wall of the insert cylinder 306; 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 the number of times to the detection mechanism 3, the electric telescopic rod 14 is started to drive the pressure block 15 to press the bolt to fix it. 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 started to drive the third slider 304 to move toward one side of the rotating pile 703. At the same time, the control module starts the third motor 308, so that the torque detection module 307 drives the insert cylinder 306 and the rotating cylinder 310 to rotate. As the rotating cylinder 310 moves toward the bolt, the nut on the bolt will eventually be stuck in the interior of the rotating cylinder 310, and the rotating cylinder 310 will be rotated. The second spring 309 is connected to the insert cylinder 306 by the second spring 309, which makes the inner wall of the rotating cylinder 310 and the outer wall of the nut different in angle. The rotating cylinder 310 can be compressed into the insert cylinder 306 while rotating to compress the second spring 309 to deform and temporarily suspend the movement of the rotating cylinder 310. When the displacement of the rotating cylinder 310 stops, it rotates itself, so that the inner wall of the rotating cylinder 310 can be rotated to an angle that matches the outer wall of the nut, so that the nut can be inserted into the interior of the rotating cylinder 310. Then, the rotating cylinder 310 can drive the nut to rotate together. At the same time, the second slider 303 continues to move, so that the nut is inserted into the inside of the rotating cylinder 310 away from the base 1. At this time, the second slider 303 stops and the fixing seat 301 stops. The third motor 308 behind the linear motor at the connection continuously drives the insert cylinder 306 to rotate, and the first spring 305 can buffer the lateral pulling force generated during the rotation of the nut driven by the rotating cylinder 310, and the torque detection module 307 continuously outputs the rotation torque of the rotating cylinder 310 to the processing module 302. The processing module 302 outputs the feedback torque forming a change trend during the rotation of the rotating cylinder 310 to the control module, and the control module compares the trend with the preset value. When the value difference exceeds the threshold, the number of movements of the rotating pile 703 is counted, and then the third motor 308 is stopped. The linear motor at the connection between the second slider 303 and the fixed seat 301 drives the third slider 30 4 is reset, so that the rotating drum 310 is pulled out of the bolt pair. At this time, the tightness of the nut and the bolt is higher. After the rotating pile 703 continues to move, the control module records the number of times the rotating pile 703 moves to the upper side of the second funnel 6, and then starts the fourth motor 705 to drive the rotating pile 703 to flip, so that the nuts loaded on the upper side of the rotating pile 703 fall into the second funnel 6 and are discharged into the unqualified product area. Then, the rotating pile 703 is started to drive the rotating pile 703 to flip and reset, and the rotating pile 703 does not flip after moving to the upper side of the first funnel 5. If the matching torque of the bolt and nut meets the standard, the rotating pile 703 moves to the upper side of the first funnel 5 and completes the flip unloading, so that the bolt pair is discharged into the qualified product area.

[0020] For example three, please refer to Figure 1-8The present invention provides a technical solution: a rotating drum 310 is provided with an opening extending vertically therethrough; an insulating plate 311 is slidably connected to the inner wall of the rotating drum 310; two conductive blocks 312 are provided on the side of the insulating plate 311 close to 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; After the nut is stuck in the rotating drum 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 end of the conductive block 312 on the other side. Since the current flows through the bolt and the nut, the current resistance can be detected, and then the resistance change at different contact positions of the nut and the bolt can be detected during the movement of the nut. Then, the resistance can be used to determine whether the surface coating of the nut and the bolt is damaged, thereby achieving the purpose of screening out bolt pairs with coating defects during the fit detection of the bolt pairs.

[0021] For 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 the 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 respectively electrically connected to the two electrodes of the electromagnet 706, and the two second conductive contacts 707 are respectively in contact with the two first conductive contacts 702. 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 supply. The first conductive contacts 702 and the second conductive contacts 707 are both provided on the lower side of the rotating pile 703. The electromagnet 706 is provided on the lower side of the rotating pile 703. The electromagnet 706 can generate magnetic force when energized. During the process of transporting the bolt pair by the rotating pile 703 of this device, since the second conductive contact piece 707 maintains contact with the first conductive contact piece 702, the electromagnet 706 is energized to generate magnetism, thereby causing the bolt pair on the upper side of the rotating pile 703 to be attracted downward and fixed, so that it remains stable during movement and avoids deviation. When the rotating pile 703 is driven to rotate and unload by the fourth motor 705, the second conductive contact piece 707 and the first conductive contact piece 702 are staggered, causing the electromagnet 706 to be powered off, thereby allowing the bolt pair to be smoothly discharged.

[0022] A method for preparing a bolt comprises the following steps: S1: The control module drives the plurality of rotating piles 703 to move to the loading position in sequence via the first motor 9. The manipulator places the bolts into the rotating piles 703. The bolt heads are fixed by the pressing blocks 15. The assembling mechanism 2 then assembles the nuts to be mounted onto the bolts. S2: The control module starts the linear motor to drive the rubber tube 205 to move toward the rotating pile 703, and at the same time controls the second motor 204 to drive the rubber tube 205 to rotate, so that the nut is sleeved onto the bolt thread section under the action of friction force, and the nut is initially screwed into the bolt; S3: The rotating pile 703 moves to the position of the detection mechanism 3, and 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 curve fed back by the rotating drum 310 and the torque detection module 307 is collected in real time and compared with the preset curve to determine whether the matching accuracy of the connection pair meets the standard; S4: During the screwing process of the nut, the conductive block 312 disposed in the rotating drum 310 performs resistance detection on the bolt pair, and determines whether the bolt pair coating is damaged based on the change in resistance values ​​at different contact points; 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 to the qualified or unqualified collection area, completing automatic classification and discharging.

[0023] The present bolt preparation device realizes the continuous transfer of bolt pairs between multiple stations through the turntable 4, and completes the precise assembly and efficient detection of bolt pairs by combining the coordinated actions of the rubber cylinder 205, the pressure block 15, the rotating cylinder 310 and the conductive block 312. The device accurately installs the nut loaded in the guide trough 206 to the end of the bolt through the rubber cylinder 205, and then the torque detection module 307 drives the rotating cylinder 310 to further tighten the nut, and simultaneously transmits the feedback torque to the control module through the processing module 302 for comparison and judgment, so as to realize the 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 coating at the contact part between the bolt and the nut is complete. The bolt pair is stably maintained during the transfer process by the electromagnet 706 to ensure the positioning accuracy during the movement and flipping process. Finally, the fourth motor 705 controls the unloading direction of the station according to the control result, and automatically classifies and discharges qualified and unqualified products, thereby improving product consistency, screening accuracy and the automation level of the entire line.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bolt preparation device, comprising a base (1) and a control module, characterized in that: The upper surface of the base (1) is rotatably connected to an assembly mechanism (2) via a bearing, the left side of the base (1) is provided with an assembly mechanism (2), the right side of the assembly mechanism (2) is provided with a detection mechanism (3), the upper surface of the base (1) is rotatably connected to a turntable (4) via a bearing, the front side of the base (1) is provided with a first funnel (5) and a second funnel (6), a plurality of material transport mechanisms (7) are provided on the upper side of the base (1), the upper side of the inner wall of the turntable (4) is fixedly connected to a transmission ring (8), the inner wall of the base (1) is fixedly connected to a first motor (9), the output end of the first motor (9) is fixedly connected to a gear (10), and the outer wall of the gear (10) is meshed with the inner wall of the transmission ring (8); The inner wall of the turntable (4) is fixedly connected to a rotating ring (12), the inner side of the base (1) is provided with a laser detection module (11), a plurality of 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), and the laser detection module (11) is electrically connected to the control module for positioning the rotation position of the turntable (4); The assembly mechanism (2) includes a fixing assembly and a rubber tube (205) on the fixing assembly, wherein the rubber tube (205) can be translated in the left and right directions relative to the base (1), and the rubber tube (205) can rotate on its own, and the rubber tube (205) can install the nut on the surface of the 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 assembly mechanism (2), and the rotating drum (310) can rotate. The rotating drum (310) can further rotate and tighten the nut on the bolt.

2. A bolt preparation device according to claim 1, characterized in that: The position of the reflection point on the rotating ring (12) is arranged to correspond to the position of the material transport mechanism (7) on the turntable (4). The first motor (9) is electrically connected to the control module. The first motor (9) drives the turntable (4) to rotate through the gear (10). The rotating ring (12) and the turntable (4) rotate synchronously. The laser detection module (11) locates the rotation position of the turntable (4) through the reflection point on the rotating ring (12).

3. A bolt preparation device according to claim 2, characterized in that: A fixed plate (13) is provided on the left side and the right side of the base (1), and the two fixed plates (13) are symmetrically arranged with the middle part of the base (1) as the symmetry axis, and an electric telescopic rod (14) is provided on each of the fixed plates (13), and a pressure block (15) is fixedly connected to the lower end of the electric telescopic rod (14). The rotation path of the material transport mechanism (7) passes through the lower side of the pressure block (15), and the pressure block (15) can move downward to the upper side of the material transport mechanism (7) to limit the bolt pair.

4. A bolt preparation device according to claim 3, characterized in that: The fixing assembly comprises a bracket (201), the right end of the bracket (201) is fixedly connected to the lower side of the base (1), the upper side of the left end of the bracket (201) is fixedly connected to a first slide rail (202), the upper surface of the first slide rail (202) is slidably connected to a first slider (203), the inner wall of the first slider (203) is fixedly connected to a second motor (204), the output end of the second motor (204) is fixedly connected to the left side of the rubber tube (205), and the upper middle side of the bracket (201) is also fixedly connected to a guide trough (206), and the guide trough (206) is a hollow structure with an upper opening, and a discharge port is provided on the lower side of the guide trough (206) that passes through the left and right sides, 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.

5. A bolt preparation device according to claim 4, characterized in that: The first slider (203) is connected to the first slide rail (202) via a linear motor, and the linear motor and the second motor (204) are both electrically connected to a control module. The middle of the rubber tube (205) and the middle of the guide trough (206) are located on the same central axis. The outer diameter of the rubber tube (205) is consistent with the inner diameter of the left side of the discharge hole on the guide trough (206), and the right end of the rubber tube (205) can pass through the guide trough (206) and move to the right side of the guide trough (206). The rubber tube (205) can sleeve the nut filled in the guide trough (206) onto the bolt.

6. The bolt preparation device according to claim 5, characterized in that: The material transport mechanism (7) includes a mounting groove (701), a plurality of mounting grooves (701) are provided on the upper side of the turntable (4), two first conductive contact pieces (702) are fixedly connected to the lower side of the inner wall of the mounting groove (701), a rotating pile (703) is provided inside the mounting groove (701), a placement groove (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 one side of the inner wall of the mounting groove (701) close to the middle of the base (1), an electromagnet (706) is fixedly connected to the lower side of the rotating pile (703), and two second conductive contact pieces (707) are provided on the outer wall of the rotating pile (703), the two second conductive contact pieces (707) are respectively electrically connected to the two electrodes of the electromagnet (706), and the two second conductive contact pieces (707) are respectively in contact with the two first conductive contact pieces (702).

7. The bolt preparation device according to claim 6, characterized in that: The fourth motor (705) is electrically connected to the control module, and the fourth motor (705) can drive the rotating pile (703) to rotate. The bolt can be placed inside the placement slot (704), and the two first conductive contacts (702) are electrically connected to an external power supply. The first conductive contact (702) and the second conductive contact (707) are both arranged on the lower side of the rotating pile (703). The electromagnet (706) is arranged on the lower side of the rotating pile (703). After the electromagnet (706) is energized, it generates magnetic force to attract and fix the bolt pair, thereby preventing the bolt pair from deflecting during movement.

8. The bolt manufacturing device according to claim 7, characterized in that: The detection component 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 to the control module, the upper surface of the fixed seat (301) is slidably connected to a second slider (303), the second slider (303) is connected to the fixed seat (301) through a linear motor, and the linear motor at the connection between the second slider (303) and the fixed seat (301) is electrically connected to the control module, the upper side of the second slider (303) is slidably connected to a third slider (304), one side of the outer wall of the third slider (304) is connected to the second slider (303) through a first spring (305), the side of the third slider (304) close to the base (1) is rotatably connected to an insert (306) through a bearing, and the third slider (304) is away from the base ( 1) is fixedly connected to one side of the rotating cylinder (306), the torque detection module (307) is electrically connected to the processing module (302), the output end of the torque detection module (307) passes through the third slider (304) and is fixedly connected to the outer wall of the insert cylinder (306), the input end of the torque detection module (307) is provided with a third motor (308), the output end of the third motor (308) is connected to the output end of the torque detection module (307), the third motor (308) is electrically connected to the control module, the inner wall of the insert cylinder (306) away from the base (1) is fixedly connected to a second spring (309), the other end of the second spring (309) is fixedly connected to one end of the rotating cylinder (310) away from the base (1), and the outer wall of the rotating cylinder (310) is slidably connected to the inner wall of the insert cylinder (306).

9. The bolt preparation device according to claim 8, characterized in that: The rotating drum (310) is provided with an opening extending upward and downward, and an insulating plate (311) is slidably connected to the inner wall of the rotating drum (310). Two conductive blocks (312) are provided on the side of the insulating plate (311) close to the base (1), and 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), and the other end of the third spring (313) is fixedly connected to the inner wall of the rotating drum (310).

10. A method for preparing a bolt, characterized in that: The steps include: S1: The control module drives the plurality of rotating piles (703) to move to the loading position in sequence via the first motor (9), and the bolts are placed in the rotating piles (703) via the manipulator, and the bolt heads are fixed via the pressing blocks (15), and then the nuts to be installed are assembled onto the bolts by the assembly mechanism (2); S2: The control module starts the linear motor to drive the rubber tube (205) to move toward the side of the rotating pile (703), and at the same time controls the second motor (204) to drive the rubber tube (205) to rotate, so that the nut is sleeved onto the bolt thread section under the action of friction force, and the nut is initially screwed into the bolt; S3: The rotating pile (703) moves to the position of the detection mechanism (3), and the control module drives the third motor (308) to drive the rotating drum (310) to rotate and further tighten the nut. At the same time, the torque change curve fed back by the rotating drum (310) and the torque detection module (307) is collected in real time, and compared with the preset curve to determine whether the matching accuracy of the connection pair meets the standard; S4: During the screwing process of the nut, the resistance of the bolt pair is detected by the conductive block (312) disposed in the rotating drum (310), and the change of the resistance value at different contact points is analyzed to determine whether the plating layer of the bolt pair is damaged; 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, the fourth motor (705) is driven to flip the corresponding rotating pile (703) to unload the bolt pair to the qualified or unqualified collection area, completing automatic classification and discharge.

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