Hub press-fitting detection production line

Abstract

The invention provides a hub press-fitting detection production line, and relates to the technical field of hub production. Comprising a bearing press-fitting mechanism and a swing detection mechanism which are arranged front and back, and further comprises a good product conveying line and a defective product conveying line which are connected with one side of an outlet of the swing detection mechanism, the defective product conveying line is an annular conveying line, and the two ends of the defective product conveying line communicate with the swing detection mechanism. The defective product conveying line is composed of a plurality of defective product linear conveying sections and a plurality of defective product reversing conveying sections, and a polishing station and an automatic cleaning device are further arranged on the outer side of the defective product conveying line. The device further comprises an annular repair conveying line, the repair conveying line is connected with the inferior-quality product conveying line and the swing detection mechanism in series, and a reversing structure is connected between the repair conveying line and the inferior-quality product conveying line in series. According to the invention, hubs in different states are automatically conveyed to designated positions for maintenance, so that the efficiency of hub production detection is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of wheel hub manufacturing technology, and in particular to a wheel hub press-fitting and testing production line. Background Technology

[0002] The main structure of the wheel hub is formed by aluminum casting. Due to the limitations of the quality of the casting sand mold, the wheel hub is not an ideal circular structure, and the surface has some burrs and impurities. After the bearing is press-fitted into the wheel hub, the runout of the wheel hub needs to be tested. Wheel hubs with excessive runout need to be inspected and repaired.

[0003] The existing wheel hub press-fitting and inspection production line is a single-direction straight line. Some wheel hubs with quality problems need to be removed by workers for repair, and then the repaired wheel hubs need to be placed back at the front of the production line for re-inspection. Alternatively, bearings with abnormal press-fitting need to be replaced. Some wheel hubs need to undergo multiple repairs and bearing replacements before it can be determined whether their shape meets production requirements. The traditional press-fitting and inspection production line cannot automatically transport the above-mentioned abnormal wheel hubs for repair. Workers need to repair and replace them individually, which reduces the efficiency of wheel hub production. At the same time, manual transfer may cause injury to workers or damage to wheel hub products. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a wheel hub press-fitting and inspection production line. This invention automatically transports wheel hubs in different states to designated locations for inspection, greatly improving the efficiency of wheel hub production and inspection.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A wheel hub press-fitting and inspection production line includes a bearing press-fitting mechanism and a swing detection mechanism arranged front and rear. It also includes a good product conveyor line and a defective product conveyor line connected to the outlet side of the swing detection mechanism. The defective product conveyor line is a ring conveyor line, with both ends connected to the swing detection mechanism. The defective product conveyor line consists of multiple straight defective product conveying sections and multiple reversing defective product conveying sections. A grinding station and an automatic cleaning device are also provided on the outside of the defective product conveyor line. The line also includes a ring-shaped rework conveyor line, which is connected in series with the defective product conveyor line and the swing detection mechanism. A reversing structure is connected in series between the rework conveyor line and the defective product conveyor line. An image detection structure is provided on the outside of both the reversing structure and the defective product reversing conveyor section, and the image detection structure is electrically connected to the reversing structure.

[0007] Preferably, the automatic cleaning device includes a first cleaning chamber for cleaning the upper side of the wheel hub and a second cleaning chamber for cleaning the lower side of the wheel hub.

[0008] Preferably, the automatic cleaning device includes a cleaning cover with slidable closing components on both sides of the inner wall of the cleaning cover. The closing components are retractable and form a closed barrier on the outside of the hub after they are extended. The device also includes a gas cleaning component, which includes a gas cleaning plate, a rotary drive for controlling the directional rotation of the gas cleaning plate, and a telescopic drive for controlling the vertical lifting of the gas cleaning plate.

[0009] Preferably, the rotary drive component is fixed to the telescopic end of the telescopic drive component, and the rotary end of the rotary drive component is provided with a central sealing gasket.

[0010] Preferably, a high-pressure gas outlet is provided at the center of the gas cleaning plate, and negative pressure dust suction ports are provided on both sides of the high-pressure gas outlet.

[0011] Preferably, the enclosure assembly includes an enclosure plate with a semi-circular notch on the outside, a horizontal telescopic device for controlling the horizontal sliding of the enclosure plate, and an electric slide rail for controlling the lifting and lowering movement of the enclosure plate.

[0012] Preferably, a lifting device is also provided at the bottom of the second cleaning chamber, and the lifting device is located at the center of the two enclosed panels after they are joined together.

[0013] Preferably, the bearing pressing mechanism is located on the inlet side of the swing detection mechanism, and the rework conveyor line is connected to the bearing pressing mechanism.

[0014] Preferably, a laser marking point is also provided on the inlet side of the bearing press-fitting mechanism.

[0015] Preferably, one of the defective product reversing conveyor sections is also connected to a first conveyor line and a second conveyor line, and the image detection structure is electrically connected to the defective product reversing conveyor section.

[0016] The beneficial effects of this invention are as follows:

[0017] Compared with existing technologies, the circular defective product conveyor line can automatically circulate and transport defective wheel hubs to the grinding station to clean burrs on the surface, preventing burrs and other impurities from affecting the runout test. At the same time, the rework conveyor line can automatically transport the wheel hubs to the bearing pressing mechanism for bearing testing, preventing bearing problems from affecting the runout test of the wheel hub. By adopting a brand-new wheel hub pressing and testing production line, wheel hubs can be automatically transported and moved for inspection and reversal, automatically transporting wheel hubs in different states to designated locations for repair. The above processes are carried out automatically, greatly improving the efficiency of wheel hub production and inspection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the defective product conveyor line structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the rework conveyor structure of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the second cleaning chamber of the present invention.

[0022] Figure 5 This is a schematic diagram of the internal structure of the first cleaning chamber of the present invention.

[0023] In the diagram: 100, laser marking point; 200, bearing pressing mechanism; 300, rework conveyor line; 310, rework straight section one; 320, reversing structure; 330, rework straight section two; 340, rework reversing section one; 350, rework straight section three; 360, rework reversing section two; 370, rework straight section four; 400, swing detection mechanism; 500, defective product conveyor line; 510, defective product straight section one; 520, defective product reversing section one; 530, defective product straight section two; 540, defective product reversing section two; 550, defective product straight section three; 5 60. Defective Product Reversing Section Three; 570. First Conveyor Line; 580. Second Conveyor Line; 590. Defective Product Straight Section Four; 600. Good Product Conveyor Line; 610. Straight Conveyor Structure; 620. Reversing Conveyor Structure; 700. Automatic Cleaning Device; 710. Cleaning Cover; 720. Enclosure Assembly; 721. Enclosure Plate; 722. Horizontal Expansion Joint; 723. Electric Slide Rail; 730. Gas Cleaning Assembly; 731. Gas Cleaning Plate; 732. Central Sealing Gasket; 733. Rotary Drive Component; 734. Telescopic Drive Component; 740. Lifting Device. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] To address the problems mentioned in the background art, see Appendix Figure 1 -Appendix Figure 5 A wheel hub press-fitting and testing production line includes a bearing press-fitting mechanism 200 and a swing detection mechanism 400 arranged in front and behind. The bearing press-fitting mechanism 200 presses the bearing to a predetermined position on the surface of the wheel hub, and the swing detection mechanism 400 can perform runout detection on the wheel hub after the bearing is press-fitted to determine whether the wheel hub meets the production requirements.

[0026] The wheel hub press-fitting inspection production line also includes a good product conveyor line 600 and a defective product conveyor line 500 connected to the outlet side of the swing inspection mechanism 400. The good product conveyor line 600 can transport qualified wheel hubs, and the defective product conveyor line 500 can transport defective wheel hubs that fail the inspection. The good product conveyor line 600 includes a straight conveying structure 610 and a reversing conveying structure 620. The defective product conveyor line 500 is also equipped with a reversing conveying structure 620 adjacent to the good product conveyor line 600. By adjusting the conveying direction of the two reversing conveying structures 620, the wheel hubs on their surfaces can be controlled to be transported to the side of the straight conveying structure 610 or continue to circulate on the surface of the defective product conveyor line 500.

[0027] The aforementioned defective product conveyor line 500 is a circular conveyor line. Both ends of the defective product conveyor line 500 are connected to the swing detection mechanism 400. The defective product conveyor line 500 can perform shape inspection, burr grinding and repair on wheel hubs that fail the initial inspection, so as to avoid the aforementioned local defects from affecting the overall inspection.

[0028] Specifically, the defective product conveyor line 500 consists of multiple straight conveyor sections and multiple reversing conveyor sections for defective products. A grinding station and an automatic cleaning device 700 are also provided on the outside of the defective product conveyor line 500. The grinding station can carefully inspect and grind the shape of the wheel hub to completely eliminate the presence of burrs on the surface of the wheel hub. Depending on the amount of rework, manual inspection and grinding or automated equipment can be selected to complete the inspection and grinding. The automatic cleaning device 700 can deeply clean the burrs and related impurities that fall off the surface of the wheel hub during grinding, so as to avoid the presence of impurities on the surface of the wheel hub affecting the subsequent second vibration test.

[0029] As one of the optional methods, the defective product linear conveying section may include defective product linear section one 510, defective product linear section two 530, defective product linear section three 550, and defective product linear section four 590. The above four linear conveying sections form a rectangular ring conveying structure. Defective product reversing section one 520 is set between defective product linear section one 510 and defective product linear section two 530 to reverse the conveying of the wheel hub. Defective product reversing section two 540 is set between defective product linear section two 530 and defective product linear section three 550 to reverse the conveying of the wheel hub. Defective product reversing section three 560 is set between defective product linear section three 550 and defective product linear section four 590 to reverse the conveying of the wheel hub. This ensures that the defective wheel hub can automatically circulate to the side of the swing detection mechanism 400 for another bounce detection without manual transfer, meeting the requirements of automatic production conveying, improving the wheel hub production conveying efficiency, and also avoiding the occurrence of safety accidents.

[0030] It also includes a circular rework conveyor line 300, which is connected in series with the defective product conveyor line 500 and the oscillation detection mechanism 400. A reversing structure 320 is connected in series between the rework conveyor line 300 and the defective product conveyor line 500. An image detection structure is provided on the outside of the reversing structure 320 and the defective product reversing conveyor section. The image detection structure is electrically connected to the reversing structure 320. The image detection structure can judge the wheel hub to detect how many times the wheel hub has passed the reversing structure 320 side. For the wheel hub that has passed the reversing structure 320 side for the first time, the reversing structure 320 conveys it in a straight line. The wheel hub that has undergone burr grinding and repair is then conveyed back to the oscillation detection mechanism 400 side for oscillation detection.

[0031] After passing inspection, the wheel hubs are conveyed to the good product conveyor line 600 for subsequent production processes. Wheel hubs that fail inspection are re-entered to the defective product conveyor line 500. At this time, no burr grinding is performed on the wheel hub surface. When the reversing structure 320 detects that the wheel hub has been conveyed to this position for the second time, the reversing structure 320 is controlled to bend and convey the wheel hub to the rework conveyor line 300. The rework conveyor line 300 circulates the wheel hub to the bearing pressing mechanism 200 to judge the quality and installation status of the bearings inside the wheel hub. Abnormal bearings inside the wheel hub are repaired and replaced to avoid bearing problems affecting the wheel hub runout detection.

[0032] As an optional feature, the aforementioned rework conveyor line 300 also includes a second rework straight section 330, a third rework straight section 350, and a fourth rework straight section 370. The above structure enables the straight conveying of the wheel hub. The rework conveyor line 300 also includes a first rework reversing section 340 and a second rework reversing section 360, which enables the reversing conveying of the wheel hub at the bending position, thus meeting the requirements for automatic circular conveying of the wheel hub.

[0033] This production line is suitable for the integrated operation of bearing press-fitting, inspection and rework of automobile wheel hubs. The entire line adopts centralized PLC control to ensure the accuracy of conveying and positioning, realize the automation and continuous production of wheel hub processing, and greatly improve production efficiency and product qualification rate.

[0034] The bearing pressing mechanism 200 is a servo hydraulic pressing structure, which can realize precise interference pressing of bearings and wheel hubs and is suitable for different specifications of automotive wheel hubs; the swing detection mechanism 400 is a special equipment for wheel hub runout and runout detection, which can detect the radial runout, end face circular runout and swing amount of the wheel hub after pressing in real time and determine whether it meets the factory standards.

[0035] The good product conveyor line 600 is a belt-type linear conveyor line that directly transports qualified wheel hubs to the subsequent packaging process; the defective product conveyor line 500 is a ring chain plate conveyor line, which is spliced ​​together by multiple defective product linear conveyor sections and multiple defective product reversing conveyor sections (reversing angle 90°). Both ends of the line are connected to the outlet and inlet of the swing detection mechanism 400 to realize the cyclic conveying and processing of defective wheel hubs after preliminary inspection.

[0036] The grinding station located outside the defective product conveyor line 500 is equipped with a pneumatic grinder and tooling fixtures. It is used for manual or semi-automatic grinding and repair of defects such as burrs and dents on the wheel hub pressing surface. By inspecting the above-mentioned items, the impurities are prevented from affecting the wheel hub runout test. The automatic cleaning device 700 is an integrated cleaning equipment that uses high-pressure air blowing and negative pressure dust suction to clean the ground and repaired wheel hubs, removing iron filings and dust from the surface. The cleaning qualification rate is ≥99%. This is also to avoid residual impurities affecting the subsequent runout test and causing misjudgment.

[0037] The rework conveyor line 300 is a circular double-speed chain conveyor line, which is connected in series with the defective product conveyor line 500 and the oscillation detection mechanism 400 to form a closed-loop rework process. It can transport defective wheel hubs that need to be re-pressed with bearings back to the bearing pressing mechanism 200. The above-mentioned wheel hubs are wheel hubs that have undergone the previous inspection. It is determined that there are no burrs or impurities on the surface of the wheel hub. The rework conveyor line 300 transports wheel hubs that have been inspected and continue to be unqualified to the bearing pressing mechanism 200 for bearing replacement. This avoids the influence of inferior bearings on the runout detection of the wheel hub and ensures the accuracy of the final test results.

[0038] The reversing structure 320 is an electric rotary reversing device with an adjustable reversing angle of 0-180°, enabling precise reversing and conveying of the wheel hub between the defective product conveyor line 500 and the rework conveyor line 300. The image detection structure is an industrial CCD vision inspection system equipped with a ring light source and image recognition algorithm. It can acquire image information of the wheel hub surface and pressing surface in real time, determine the defect repair effect, and detect the number of times the wheel hub is conveyed on the surface of the defective product conveyor line 500 to determine whether the wheel hub has undergone one inspection. The image detection structure is electrically linked with the reversing structure 320. If it detects that the wheel hub has undergone one grinding and inspection and is being conveyed to the same position for the second time, it controls the reversing structure 320 to convey the wheel hub to the surface of the rework conveyor line 300. The rework conveyor line 300 automatically conveys the wheel hub to the bearing pressing mechanism 200 for bearing replacement.

[0039] Specifically, the automatic cleaning device 700 includes a first cleaning chamber for cleaning the upper side of the wheel hub and a second cleaning chamber for cleaning the lower side of the wheel hub.

[0040] The first and second cleaning chambers are sealed chambers arranged in series, both using stainless steel frames and transparent acrylic panels. This ensures a tight seal during the cleaning process, preventing dust and metal filings from splashing, while also allowing for easy observation of the internal cleaning status. The chamber dimensions are designed according to the largest wheel hub size compatible with the production line, and anti-static dust-removing pads are affixed to the inner walls of the chambers to prevent dust adsorption. The wheel hubs are conveyed sequentially into the first and second cleaning chambers, achieving zoned cleaning of the upper side (wheel hub end face, outer spokes) and the lower side (wheel hub mounting surface, inner spokes) of the hub, ensuring no blind spots. Both cleaning chambers are equipped with independent air sources and dust collection systems, and have dust collection troughs at the bottom for easy collection of metal filings and dust generated during cleaning, allowing for regular emptying.

[0041] Specifically, the automatic cleaning device 700 includes a cleaning cover 710, with sealing components 720 sliding on both sides of the inner wall of the cleaning cover 710. The sealing components 720 are retractable, and when extended, they form a closed barrier on the outside of the wheel hub. The closed barrier can seal and isolate the upper and lower sides of the wheel hub, preventing debris splashed from one side of the gas cleaning from affecting the other side. It also includes a gas cleaning component 730, which includes a gas cleaning plate 731, a rotary drive 733 for controlling the directional rotation of the gas cleaning plate 731, and a telescopic drive 734 for controlling the vertical lifting and lowering of the gas cleaning plate 731. The rotary drive 733 can control the gas cleaning plate 731 to rotate directionally around a predetermined vertical axis, and the telescopic drive 734 can control the gas cleaning plate 731 to move closer to or further away from the end face of the wheel hub, thereby achieving adaptive gas cleaning.

[0042] The cleaning hood 710 is located outside the conveyor line, forming a semi-sealed cleaning space with the conveyor line table. Its inner wall is polished to reduce dust adsorption. The sealing component 720 is symmetrically arranged on both sides of the inner wall of the cleaning hood 710. When extended, it can form a ring-shaped closed barrier around the hub, completely isolating the cleaning area from the outside, preventing high-pressure gas from carrying dust out of the cleaning hood 710, and ensuring the cleanliness of the cleaning environment.

[0043] The gas cleaning component 730 is the core component of the automatic cleaning system. The gas cleaning plate 731 is a circular stainless steel plate with a diameter adapted to the wheel hub cleaning surface, and its surface is equipped with air passages and dust suction channels. The rotary drive component 733 is a servo motor that can drive the gas cleaning plate 731 to rotate in a specific direction, achieving circumferential full-coverage cleaning of the wheel hub surface. The telescopic drive component 734 is a servo electric push rod that can control the vertical raising and lowering of the gas cleaning plate 731, adjusting the distance between the cleaning plate and the wheel hub surface to meet the cleaning needs of wheel hubs of different thicknesses. The rotary drive component 733 and the telescopic drive component 734 are linked for control, significantly improving cleaning efficiency and cleaning effect.

[0044] The positive and negative pressure generated on the surface of the gas cleaning plate 731 can be controlled by separate pipeline connections. In order to avoid tangling of the relevant pipelines, the gas cleaning plate 731 can be selected to reciprocate. The positive or negative pressure can also be generated by a separate air pump installed on the surface of the gas cleaning plate 731, which can rotate synchronously with the gas cleaning plate 731 to achieve directional and continuous rotational cleaning of the wheel hub surface.

[0045] The rotary drive 733 is fixed to the telescopic end of the telescopic drive 734. The rotary end of the rotary drive 733 is provided with a central sealing gasket 732, which can seal a predetermined area on the surface of the wheel hub at the center position.

[0046] The rotary drive component 733 is fixedly connected to the telescopic end of the telescopic drive component 734 via a flange. A sealing gasket is installed on the connection surface to prevent dust and gas from entering the drive component during the cleaning process, thus extending the service life of the equipment. The central sealing gasket 732 is made of wear-resistant rubber and is in the shape of a circular boss with a diameter that matches the central shaft hole of the hub. When the telescopic drive component 734 drives the gas cleaning plate 731 to the cleaning position, the central sealing gasket 732 can be embedded in the central shaft hole of the hub to achieve a central seal in the cleaning area, preventing high-pressure gas from leaking from the shaft hole, ensuring stable cleaning pressure, and preventing dust from entering the shaft hole and affecting subsequent assembly. The central sealing gasket 732 is coaxially connected to the rotating end of the rotary drive component 733 and can rotate synchronously with the gas cleaning plate 731 without jamming or friction.

[0047] A high-pressure gas nozzle is located at the center of the gas cleaning plate 731, and negative pressure dust suction ports are located on both sides of the high-pressure gas nozzle. High-pressure gas is continuously sprayed out through the high-pressure gas nozzle to clean the debris remaining on the surface of the wheel hub. The negative pressure dust suction ports on both sides can suck up the raised debris to achieve directional collection and prevent the spillage of dust and debris.

[0048] The high-pressure gas outlet is a circular main nozzle located at the center of the gas cleaning plate 731. It is connected to an external high-pressure gas source and can spray high-pressure airflow onto the surface of the wheel hub to impact and peel off iron filings and dust adhering to the surface. Around the high-pressure gas outlet, there are also multiple auxiliary oblique nozzles arranged circumferentially at equal intervals. The spray direction is at an angle of 30-45° to the plane of the gas cleaning plate 731 to achieve circumferential diffusion of high-pressure airflow and increase the airflow coverage area.

[0049] The negative pressure suction port is a long, narrow slot symmetrically arranged on both sides of the high-pressure gas nozzle. It connects to the external negative pressure suction system and can remove iron filings and dust propelled by the high-pressure airflow in real time, achieving simultaneous blowing and suction to prevent secondary dust dispersion within the clean area. The airflow direction of the high-pressure gas nozzle matches the suction direction of the negative pressure suction port, allowing the airflow to carry dust directly into the suction port, achieving a suction efficiency of ≥98%. The gas cleaning plate 731 integrates an air path and a suction channel, which are independent of each other, preventing cross-flow and ensuring the stability of both airflow and suction.

[0050] The aforementioned enclosure component 720 includes an enclosure plate 721 with a semi-circular notch on the outside, a horizontal telescopic device 722 for controlling the horizontal sliding of the enclosure plate 721, and an electric slide rail 723 for controlling the lifting and lowering movement of the enclosure plate 721.

[0051] The sealing plate 721 is made of stainless steel, 5-8mm thick. Its outer semi-circular notch matches the curvature of the wheel hub's outer wall. When two sealing plates 721 are horizontally closed, the semi-circular notches join to form a complete circular through-hole, which can fit snugly against the wheel hub's outer wall to form a ring-shaped sealed barrier. An anti-static rubber pad is attached to the inner side of the sealing plate 721 to ensure a good seal while preventing scratches on the wheel hub surface. The horizontal expansion joint 722 is a pneumatic slide that controls the two sealing plates 721 to simultaneously close or separate in the horizontal direction.

[0052] The electric slide rail 723 is a linear module arranged on both sides of the inner wall of the cleaning cover 710. It can drive the horizontal telescopic device 722 and the sealing plate 721 to rise and fall in the vertical direction, adapting to hubs of different diameters and heights, ensuring that the sealing plate 721 always fits the center of the hub to form the best sealing effect.

[0053] The horizontal telescopic device 722 is linked with the electric slide rail 723 for control. After the wheel hub enters the cleaning position, the electric slide rail 723 drives the sealing plate 721 to descend to the predetermined height. Then, the horizontal telescopic device 722 controls the sealing plate 721 to close and form a closed barrier. After cleaning is completed, the horizontal telescopic device 722 controls the sealing plate 721 to separate from the wheel hub. Finally, the wheel hub is transported out of the cleaning cover 710.

[0054] A lifting device 740 is also installed at the bottom of the second cleaning chamber. The lifting device 740 is located at the center of the two closed plates 721 after they are merged. The first cleaning chamber completes the deep cleaning of the upper surface of the wheel hub, and the second cleaning chamber completes the deep cleaning of the lower surface of the wheel hub. The lifting device 740 can lift the wheel hub and control the wheel hub to be staggered from the conveyor track, exposing the lower surface of the wheel hub to the environment, so as to ensure the normal progress of subsequent cleaning of the lower surface of the wheel hub.

[0055] The lifting device 740 is a servo-electric lifting platform, including a lifting base and a lifting support plate. It is located at the center of the combined two enclosed plates 721, coaxial with the central axis of the hub, ensuring the hub's levelness during lifting. The second cleaning chamber is used to clean the underside of the hub. After the hub is conveyed to the predetermined position in the second cleaning chamber, the lifting device 740 lifts the hub upwards, separating it from the conveyor platform by a predetermined distance. This prevents the conveyor platform from obstructing the cleaning area under the hub, ensuring thorough cleaning of the underside of the hub by the gas cleaning component 730, and preventing metal shavings and dust generated during cleaning from falling onto the conveyor platform, causing conveyor jamming or secondary contamination. After cleaning, the lifting device 740 smoothly lowers the hub back onto the conveyor platform for continued conveying.

[0056] The bearing pressing mechanism 200 is located on the inlet side of the swing detection mechanism 400. The rework conveyor line 300 is connected to the bearing pressing mechanism 200. The rework conveyor line 300 can transport the wheel hubs that need to be repaired or replaced to the bearing pressing mechanism 200. The bearing pressing mechanism 200 can repair the wheel hubs that still fail the test after grinding and repair, ensuring the accuracy of the bearing's quality and installation status, and avoiding the impact of bearing problems on the wheel hub's runout.

[0057] The bearing pressing mechanism 200 and the swing detection mechanism 400 are arranged in series along the conveying direction of the production line to form a continuous pressing-detection process. After the wheel hub is pressed by the bearing, it is directly conveyed to the swing detection mechanism 400 for detection. There is no need for manual transfer, which reduces the waiting time between processes and improves production efficiency.

[0058] The end of the rework conveyor line 300 is connected to the loading end of the bearing pressing mechanism 200, forming a closed-loop production process of pressing-inspection-rework-repressing-re-inspection. Wheel hubs that have been repaired once by the defective product conveyor line 500 and fail the second inspection are directly conveyed back to the loading station of the bearing pressing mechanism 200 via the rework conveyor line 300 for re-pressing. After pressing, they are conveyed again to the swing inspection mechanism 400 for inspection until they pass the inspection and then enter the good product conveyor line 600. This closed-loop process realizes the automated rework of defective wheel hubs, eliminating the need for manual handling and loading, significantly reducing labor costs, while ensuring the continuity and accuracy of the rework process.

[0059] A laser marking point 100 is also set on one side of the inlet of the bearing pressing mechanism 200. The surface of the wheel hub is marked by the laser marking point 100 to ensure that each wheel hub has a unique identifier, which can be matched with the subsequent image inspection structure. This ensures that the wheel hub can be accurately switched and moved within the rework conveyor line 300 and the defective product conveyor line 500, and ensures that the entire pressing and inspection production line can operate quickly and efficiently.

[0060] Laser marking point 100 is the laser marking machine's workstation, equipped with a fiber laser marking machine. It is located on one side of the entrance to the bearing pressing mechanism 200. Before entering the bearing pressing process, the wheel hub undergoes laser marking at laser marking point 100. The marking content includes information such as the wheel hub model, production batch, serial number, and production date. The marking location is on the non-assembly surface of the wheel hub, ensuring clear, wear-resistant, and durable markings. Laser marking point 100 is linked to the production line's conveyor mechanism; after the wheel hub arrives, it is automatically positioned and marked. After marking, it is automatically conveyed to the loading station of the bearing pressing mechanism 200. This design enables continuous operation of wheel hub marking and pressing, and the unique serial number allows for full lifecycle traceability of the wheel hub product, facilitating subsequent quality control and after-sales maintenance.

[0061] One of the defective product reversing conveyor sections is also connected to the first conveyor line 570 and the second conveyor line 580. The image detection structure is electrically connected to the defective product reversing conveyor section and controls the defective product reversing conveyor section to switch to different conveying directions. This can transport unrepairable wheel hubs away from the defective product conveyor line 500, avoiding any impact on the normal flow of subsequent wheel hubs. At the same time, it can also separate wheel hubs with defects of different degrees, making it easier for staff to carry out targeted repairs.

[0062] This defective product reversing conveyor section is the core reversing node on the defective product conveyor line 500. It is equipped with an electric reversing baffle and a positioning sensor. The first conveyor line 570 connected to it is a belt-type linear conveyor line, which is used to transport wheel hubs with minor defects (such as slight surface scratches that can be quickly repaired) to the nearest simple repair station for rapid processing. The second conveyor line 580 is a chain plate conveyor line, which is used to transport wheel hubs with severe defects (such as severely deformed pressing surfaces that cannot be repaired online) to the offline rework area outside the production line, so as to avoid severely defective wheel hubs circulating in the production line, occupying equipment resources and affecting production efficiency.

[0063] The image detection structure deployed on the outer side of the defective product reversing conveyor section is electrically linked to the reversing baffle. The image detection structure collects wheel hub defect information and, after determining the defect level using an algorithm, sends an electrical signal to the reversing baffle: if the defect is minor, the reversing baffle guides the wheel hub to the first conveyor line 570; if the defect is severe, the reversing baffle guides the wheel hub to the second conveyor line 580; if the defect is repairable through online grinding, the reversing baffle keeps the wheel hub on the defective product conveyor line 500 and transports it to the grinding station for processing. This design achieves graded processing of defective wheel hubs, rationally allocates production line resources, further improves overall production efficiency, and ensures rework quality. Wheel hub buffer platforms are installed at the ends of both the first and second conveyor lines 570 and 580 to temporarily store reworked wheel hubs and prevent congestion on the conveyor lines.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wheel hub press-fitting and testing production line, comprising a bearing press-fitting mechanism (200) and a swing detection mechanism (400) arranged front and rear, characterized in that: It also includes a good product conveyor line (600) and a defective product conveyor line (500) connected to the outlet side of the swing detection mechanism (400). The defective product conveyor line (500) is a circular conveyor line. Both ends of the defective product conveyor line (500) are connected to the swing detection mechanism (400). The defective product conveyor line (500) consists of multiple defective product straight conveyor sections and multiple defective product reversing conveyor sections. A grinding station and an automatic cleaning device (700) are also provided on the outside of the defective product conveyor line (500). It also includes a ring-shaped rework conveyor line (300), which is connected in series with the defective conveyor line (500) and the swing detection mechanism (400). A reversing structure (320) is connected in series between the rework conveyor line (300) and the defective conveyor line (500). An image detection structure is provided on the outside of the reversing structure (320) and the defective reversing conveyor section. The image detection structure is electrically connected to the reversing structure (320).

2. The wheel hub press-fitting and testing production line according to claim 1, characterized in that, The automatic cleaning device (700) includes a first cleaning chamber for cleaning the upper side of the wheel hub and a second cleaning chamber for cleaning the lower side of the wheel hub.

3. The wheel hub press-fitting and testing production line according to claim 2, characterized in that, The automatic cleaning device (700) includes a cleaning cover (710), and a sealing component (720) slides on both sides of the inner wall of the cleaning cover (710). The sealing component (720) is retractable and forms a closed barrier on the outside of the hub after it extends. It also includes a gas cleaning component (730), which includes a gas cleaning plate (731), a rotary drive component (733) for controlling the directional rotation of the gas cleaning plate (731), and a telescopic drive component (734) for controlling the vertical lifting of the gas cleaning plate (731).

4. The wheel hub press-fitting and testing production line according to claim 3, characterized in that, The rotary drive (733) is fixed to the telescopic end of the telescopic drive (734), and the rotary end of the rotary drive (733) is provided with a central sealing gasket (732).

5. The wheel hub press-fitting and testing production line according to claim 3, characterized in that, A high-pressure gas outlet is provided at the center of the gas cleaning plate (731), and negative pressure dust suction ports are provided on both sides of the high-pressure gas outlet.

6. The wheel hub press-fitting and testing production line according to claim 3, characterized in that, The enclosure assembly (720) includes an enclosure plate (721) with a semi-circular notch on the outside, a horizontal telescoping device (722) for controlling the horizontal sliding of the enclosure plate (721), and an electric slide rail (723) for controlling the lifting and lowering of the enclosure plate (721).

7. A wheel hub press-fitting and testing production line according to claim 6, characterized in that, The bottom of the second cleaning chamber is also provided with a lifting device (740), which is located at the center of the two enclosed panels (721) after they are combined.

8. The wheel hub press-fitting and testing production line according to claim 1, characterized in that, The bearing pressing mechanism (200) is located on the inlet side of the swing detection mechanism (400), and the rework conveyor line (300) is connected to the bearing pressing mechanism (200).

9. A wheel hub press-fitting and testing production line according to claim 8, characterized in that, The bearing press-fitting mechanism (200) also has a laser marking point (100) on one side of the inlet.

10. A wheel hub press-fitting and testing production line according to any one of claims 1-9, characterized in that, One of the defective product reversing conveyor sections is also connected to a first conveyor line (570) and a second conveyor line (580), and the image detection structure is electrically connected to the defective product reversing conveyor section.

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