High-precision sorting and defective product rejection equipment for brake pad thickness

Abstract

This invention relates to a high-precision brake pad thickness sorting and defective product rejection device, belonging to the field of brake pad inspection and sorting technology. It includes a horizontal support platform on which a feeding and conveying assembly, a high-precision inspection assembly, and a sorting and rejection assembly are sequentially mounted. The feeding and conveying assembly achieves stable and continuous conveying of brake pads via sprocket drive. The high-precision inspection assembly combines laser bidirectional comparative measurement and hyperspectral visual inspection technology with multi-directional re-measurement functions to simultaneously complete the inspection of thickness and appearance defects. A workpiece conveying and concentrating mechanism can automatically correct the position of the brake pads. The sorting and rejection assembly automatically classifies and unloads qualified and unqualified products based on the inspection results. This invention solves the problems of unstable feeding and conveying, low inspection accuracy and high missed detection rate, workpiece position deviation, insufficient sorting automation, loose equipment layout and inconvenient maintenance in the existing brake pad inspection and sorting process, which affect production efficiency and product quality.

Description

Technical Field

[0001] This invention relates to the field of brake pad testing and sorting technology, specifically to a high-precision brake pad thickness sorting and defective product rejection equipment. Background Technology

[0002] As a core component of the automotive braking system, brake pads' thickness and surface quality directly determine braking performance and driving safety. Therefore, extremely high requirements are placed on the inspection and sorting of brake pads before they leave the factory.

[0003] In the industrial production of automotive parts, brake pad production typically employs an assembly line operation model. Traditional manual inspection and sorting methods suffer from low efficiency, high subjectivity, and a high rate of missed inspections, making them unsuitable for large-scale production. With the development of automation technology, various semi-automatic inspection and sorting equipment have gradually been put into use, but several technical shortcomings still exist.

[0004] 1. In the conveying process, the existing equipment has poor transmission consistency in the conveying mechanism, and the brake pads are prone to jamming and misalignment, which makes it impossible to operate continuously in the subsequent inspection and sorting processes;

[0005] 2. In the inspection process, a single inspection technology is difficult to simultaneously detect both thickness and appearance defects, and the measurement error is relatively large, making it impossible to accurately identify defective products.

[0006] 3. The positional deviation of workpieces after multiple conveying stages is a prominent problem, and there is a lack of effective automated correction mechanisms, which makes it easy for misjudgment and rejection to occur in the sorting stage;

[0007] 4. Most sorting mechanisms are designed with a single channel, which cannot achieve multi-category classification and feeding, and the connection between the detection and sorting links is not smooth, resulting in a low degree of automation.

[0008] In addition, the existing equipment has a loose overall layout, with each functional component arranged independently, occupying a large area and the electrical control system is scattered. This not only increases the cost of equipment investment, but also brings many inconveniences to later maintenance, making it difficult to adapt to the compact and integrated requirements of modern production lines.

[0009] Based on the aforementioned industry pain points, there is an urgent need to develop an integrated device that combines stable feeding, high-precision multi-dimensional detection, automated correction, and precise sorting and rejection. This device would automate the entire process of brake pad detection and sorting, improve detection accuracy and operational efficiency, ensure product quality, and meet the high-quality production needs of the automotive parts industry. Summary of the Invention

[0010] To address the shortcomings of existing technologies, this invention provides a high-precision sorting and defective product rejection device for brake pad thickness, which solves the problems in existing technologies when inspecting and sorting brake pads, such as unstable feeding and conveying, low inspection accuracy and high missed detection rate, workpiece position deviation, insufficient sorting automation, loose equipment layout and inconvenient maintenance, which affect production efficiency and product quality.

[0011] To achieve the above objectives, the present invention provides the following technical solution:

[0012] A high-precision sorting and defective product rejection device for brake pad thickness includes a horizontal support platform, on which a feeding and conveying assembly, a high-precision detection assembly, and a sorting and rejection assembly are sequentially arranged.

[0013] As an optimized solution, the feeding and conveying assembly includes a feeding and conveying platform, which is a square platform with a concave upper surface. The feeding and conveying platform is equipped with a number of transversely spaced and longitudinally extended conveying rollers.

[0014] As an optimized solution, an integrated electrical control box is provided at the lower center of the feeding conveyor, and the integrated electrical control box is fixed on the upper surface of the horizontal support base.

[0015] As an optimized solution, the high-precision detection component includes a support mounting plate, which is a U-shaped plate with the opening facing downwards. The lower two ends of the support mounting plate respectively cross the feeding conveyor and are fixed to the upper surface of the integrated electrical control box.

[0016] As an optimized solution, a rotary drive motor is fixed in the middle of the upper surface of the support mounting plate, and the output shaft of the rotary drive motor passes downward through the support mounting plate and is fixed with a top turntable. A square lifting seat is provided below the top turntable.

[0017] As an optimized solution, an industrial vision camera, which is a hyperspectral camera, is fixed in the middle of the inner top surface of the square lifting seat.

[0018] As an optimized solution, a signal transmission processor is fixed in the middle of the upper surface of the square lifting seat.

[0019] As an optimized solution, the lower surface of the square lifting seat is also fixed with four centrally symmetrical guide vertical plates. Each guide vertical plate is provided with a vertically extending guide groove, and a drive slider is slidably fitted in the guide groove.

[0020] As an optimized solution, a detection base is fixed on the inner end face of the driving slider, and a laser emitter and a laser receiver are fixed sequentially from top to bottom on the outer end face of the detection base.

[0021] As an optimized solution, the sorting and rejection component is located on one side of the feeding and conveying component. The sorting and rejection component includes an integrated housing, which is a vertically arranged square box. The lower end of the integrated housing is fixed to one side of the upper surface of the horizontal support platform by bolts.

[0022] As an optimized solution, a steering drive motor is fixed on the inner top surface of the integrated chassis. The output shaft of the steering drive motor passes upward through the integrated chassis and is fixed with a transfer connecting plate. Four centrally symmetrical hydraulic telescopic cylinders are fixed at the upper surface side edge of the transfer connecting plate. A horizontal sorting turntable is fixed at the upper telescopic end of the four hydraulic telescopic cylinders. The sorting turntable is located below the last conveying roller and maintains a certain vertical working distance from the conveying roller.

[0023] As an optimized solution, the upper surface of the sorting turntable is provided with a transverse flipping groove, and a flipping guide plate is provided in the flipping groove. The root of the flipping guide plate is rotatably installed on the longitudinal inner wall of the flipping groove near the opening.

[0024] As an optimized solution, the horizontal support platform is a laterally extending square base, and two laterally symmetrical conveying support frames are welded to the upper surface of the horizontal support platform.

[0025] As an optimized solution, the lower end of the feeding conveyor is fixed to the upper surface of the horizontal portion of the two conveying support frames.

[0026] As an optimized solution, a conveying transmission box is fixed on each longitudinal outer wall of the feeding conveyor platform. A sprocket transmission mechanism is provided inside the conveying transmission box. A transmission shaft is fixed at the center of the longitudinal end face of each conveying roller. The end of the transmission shaft passes through the feeding conveyor platform and is connected to the sprocket transmission mechanism inside the conveying transmission box for transmission.

[0027] As an optimized solution, a drive motor is fixed on the longitudinal outer wall of one of the conveyor transmission boxes, and the end of the output shaft of the drive motor is connected to the sprocket transmission mechanism inside the conveyor transmission box for transmission.

[0028] As an optimized solution, four centrally symmetrical lifting and telescopic cylinders are fixed to the lower surface of the top turntable, and the lower telescopic ends of the four lifting and telescopic cylinders are fixed to the upper surface of the square lifting seat.

[0029] As an optimized solution, a support plate is fixed on the longitudinal inner wall of the middle part of the support mounting plate, a top support telescopic cylinder is fixed on the middle of the upper surface of the support plate, a horizontal lifting plate is fixed on the upper telescopic end of the top support telescopic cylinder, and three horizontally equally spaced top support plates are fixed on the upper surface of the lifting plate. The top support plates are transparent acrylic plates. The top support plates are used to push the brake pads away from the conveyor roller and keep the brake pads in a horizontal state. The transparent acrylic material does not block the laser detection optical path.

[0030] As an optimized solution, the inner bottom surface of the feeding conveyor is provided with three lifting clearance openings corresponding to the three top support plates, and the lifting clearance openings are located between two adjacent conveying rollers.

[0031] As an optimized solution, the lower surface of the square lifting seat is also fixed with four centrally symmetrical rotation drive modules. The lower end of each rotation drive module is rotatably connected to a threaded drive rod, which passes through and is threadedly connected to the drive slider.

[0032] As an optimized solution, an observation window is provided on the longitudinal side wall of the upper half of the support mounting plate, and a main control panel is fixed on the longitudinal side wall of the lower half of the support mounting plate.

[0033] As an optimized solution, the high-precision detection component is provided with a workpiece conveying and concentrating mechanism on one side of its lateral direction. The workpiece conveying and concentrating mechanism includes two longitudinally symmetrical support side plates, which are respectively disposed on the longitudinal sides of the feeding conveyor table. The upper end of the support side plate is higher than the upper surface of the feeding conveyor table, and the lower end of the support side plate is welded to the upper surface of the horizontal support base.

[0034] As an optimized solution, two transversely symmetrical side-push telescopic cylinders are fixed on the longitudinal inner wall near the upper end of each of the support side plates. A conveyor mounting frame is fixed to the telescopic end of the two side-push telescopic cylinders. The conveyor mounting frame is a U-shaped frame with a longitudinal opening. Support rollers are rotatably installed at both ends of the conveyor mounting frame. A conveyor belt is sleeved between the two transversely opposite support rollers. The lower end of the conveyor belt is slightly higher than the upper end of the conveyor roller.

[0035] As an optimized solution, a conveying motor is fixed to one end of the upper surface of each of the conveying mounting frames, and the output shaft end of the conveying motor passes downward through the conveying mounting frame and is fixed to the center of the upper end face of the supporting roller.

[0036] As an optimized solution, a dual-output shaft motor is fixed to one side of the lower surface of the sorting turntable. Each output shaft of the dual-output shaft motor is fixed to a drive wheel. Two mounting notches are provided on the sorting turntable, and the mounting notches are positioned opposite the drive wheels. A driven wheel is rotatably mounted in the mounting notches. The driven wheel is fixed to the tilting guide plate by a connecting shaft. A transmission belt is sleeved between the drive wheel and the driven wheel.

[0037] As an optimized solution, the integrated chassis is provided with a material unloading guide mechanism on the two longitudinal end faces and the transverse end face away from the material feeding and conveying component. The material unloading guide mechanism includes a hinge seat, which is fixed on the outer side wall of the integrated chassis near the upper end. A material unloading slide is hinged inside the hinge seat.

[0038] As an optimized solution, a swing connecting seat is fixed on the lower surface of the feeding slide, and two symmetrical side-swing telescopic cylinders are respectively provided below the feeding slide. One end of the side-swing telescopic cylinder is hinged to the outer side wall of the integrated housing near the lower end, and the other end is hinged to the swing connecting seat.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. The material feeding and conveying process is stable and efficient, ensuring continuous operation.

[0041] The conveyor rollers, evenly spaced in the feeding and conveying assembly, rotate synchronously via a sprocket transmission mechanism. A unified drive motor ensures consistent conveying speed and enables continuous and stable conveying of brake pads, providing a stable supply of workpieces for subsequent inspection and sorting processes. Meanwhile, an integrated electrical control box is located below the center of the feeding and conveying platform, allowing for centralized arrangement of electrical control components, saving equipment space and facilitating future maintenance.

[0042] 2. Multi-dimensional high-precision detection significantly improves detection accuracy and comprehensiveness.

[0043] The high-precision inspection component innovatively combines laser thickness measurement with hyperspectral industrial vision inspection technology, enabling simultaneous inspection of brake pad thickness and appearance defects. During inspection, a top support telescopic cylinder drives an acrylic top support plate to lift the brake pad off the conveyor roller. This avoids interference from the conveyor components and ensures inspection accuracy by preventing the transparent top support plate from obstructing the laser inspection path. The laser inspection employs a bidirectional comparative measurement mode. By adjusting the drive slider to switch the matching combination of the laser transceiver, the laser emission direction is reversed for secondary measurement, effectively eliminating the systematic error of single-sided measurement. Combined with the rotation drive motor driving the inspection mechanism to rotate periodically, it enables multi-directional thickness re-measurement of the brake pad, further improving the accuracy of thickness data. The hyperspectral industrial vision camera can simultaneously identify dimensional deviations and surface defects such as cracks and flaws in the brake pad. The inspection data is analyzed and processed in real time by the signal transmission processor and then summarized to the main control panel, forming an inspection system of "precise thickness measurement + comprehensive appearance inspection + multi-directional re-measurement." This overcomes the limitations of traditional single inspection methods and significantly reduces the missed inspection rate of defective products.

[0044] 3. Workpiece alignment design ensures stability in the sorting process.

[0045] The workpiece conveying and centralizing mechanism is located after the inspection stage and before the sorting stage. Side-push telescopic cylinders on both sides push the conveyor mounting frame towards the center, ensuring the conveyor belt fits against the sidewall of the brake pads. The conveyor motor then drives the conveyor belt to center and align the brake pads. This design corrects for positional deviations in the brake pads during conveying, ensuring they enter the sorting and rejection components in a standard posture. This avoids sorting errors caused by workpiece misalignment and provides a reliable guarantee for the stable operation of subsequent sorting stages.

[0046] 4. Automated sorting and rejection enables efficient classification and unloading.

[0047] The sorting and rejection assembly employs a steering drive motor combined with a hydraulic telescopic cylinder. Based on the judgment results from the main control panel, it precisely rotates the sorting turntable to a specified angle, achieving the classification and guidance of qualified and unqualified products. The tilting guide plate is driven by a dual-output shaft motor and sprocket transmission mechanism, allowing for flexible adjustment of the guide angle. Combined with a swingable unloading slide, it ensures the brake pads smoothly slide into the corresponding material frame. The equipment is equipped with multiple unloading guide mechanisms, each capable of handling different types of unqualified or qualified products, meeting diverse sorting needs. The entire sorting and rejection process requires no manual intervention, achieving fully automated integration of detection, sorting, and unloading, significantly improving the overall operating efficiency of the equipment and reducing the labor intensity and cost of manual sorting.

[0048] 5. The overall structure is compact and reasonable, adaptable to the needs of continuous industrial production.

[0049] The equipment's components are arranged horizontally along a support platform, forming an integrated workflow of "feeding-inspection-alignment-sorting." The layout is compact and orderly, occupying a small area and easily integrated into existing brake pad production lines. The transmission links between components are clear, and the control logic is coherent. The entire process, from workpiece feeding to final sorting and rejection, is automated, adaptable to the pace of large-scale continuous industrial production, effectively improving the overall processing efficiency and product qualification rate of brake pad production. Attached Figure Description

[0050] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0051] Figure 1 This is a schematic diagram of the overall external structure of the present invention in the main viewing direction;

[0052] Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective;

[0053] Figure 3 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction;

[0054] Figure 4 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction;

[0055] Figure 5 This is an isometric schematic diagram of the three-dimensional structure of the present invention;

[0056] Figure 6 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA.

[0057] Figure 7 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the middle BB line;

[0058] Figure 8 For the present invention along Figure 3 A half-section diagram of the three-dimensional structure cut along the CC line.

[0059] In the diagram: 1-Horizontal support platform, 2-Conveyor support frame, 3-Feeding conveyor platform, 4-Conveyor roller, 5-Conveyor transmission box, 6-Drive motor, 7-Integrated electrical control box, 8-Support mounting plate, 9-Support plate, 10-Top support telescopic cylinder, 11-Lifting pallet, 12-Top support plate, 13-Lifting clearance opening, 14-Rotation drive motor, 15-Top turntable, 16-Lifting telescopic cylinder, 17-Square lifting seat, 18-Industrial vision camera, 19-Signal transmission processor, 20-Guide vertical plate, 21-Guide chute, 22-Drive slider, 23-Detection base, 24-Laser emitter, 25-Laser receiver, 2 6-Rotation drive module, 27-Threaded drive rod, 28-Observation window, 29-Main control panel, 30-Support side plate, 31-Side push telescopic cylinder, 32-Conveyor mounting frame, 33-Support roller, 34-Conveyor belt, 35-Conveyor motor, 36-Integrated chassis, 37-Steering drive motor, 38-Transfer connecting plate, 39-Hydraulic telescopic cylinder, 40-Sorting turntable, 41-Tilting groove, 42-Tilting guide plate, 43-Dual output shaft motor, 44-Driven wheel, 45-Mounting notch, 46-Driven wheel, 47-Transmission belt, 48-Hinged seat, 49-Discharge slide, 50-Swing connecting seat, 51-Side swing telescopic cylinder. Detailed Implementation

[0060] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0061] like Figures 1 to 8 As shown, the high-precision sorting and defective product rejection equipment for brake pad thickness includes a horizontal support platform 1, which is a horizontally extending square base. The horizontal support platform 1 is provided with a feeding and conveying assembly, a high-precision detection assembly, and a sorting and rejection assembly in sequence.

[0062] The feeding and conveying assembly includes two transversely symmetrical conveying support frames 2, the lower ends of which are welded to the upper surface of the horizontal support base 1.

[0063] The upper surface of the horizontal part of the two conveyor support frames 2 is fixed with a feeding conveyor table 3, which is a square table with an inwardly concave upper surface.

[0064] The feeding conveyor platform 3 is equipped with several conveying rollers 4, which are arranged at equal intervals in the horizontal direction and extended in the vertical direction.

[0065] Each longitudinal outer wall of the feeding conveyor 3 is fixed with a conveyor transmission box 5. The conveyor transmission box 5 is equipped with a sprocket transmission mechanism. Each longitudinal end face center of the conveyor roller 4 is fixed with a transmission shaft. The end of the transmission shaft passes through the feeding conveyor 3 and is connected to the sprocket transmission mechanism in the conveyor transmission box 5 for transmission.

[0066] One of the conveyor transmission boxes 5 has a transmission drive motor 6 fixed on its longitudinal outer wall. The output shaft of the transmission drive motor 6 is connected to the sprocket transmission mechanism inside the conveyor transmission box 5.

[0067] An integrated electrical control box 7 is provided in the lower middle part of the feeding conveyor 3, and the integrated electrical control box 7 is fixed on the upper surface of the horizontal support base 1.

[0068] The high-precision detection component includes a support mounting plate 8, which is a U-shaped plate with the opening facing downwards. The lower ends of the support mounting plate 8 cross the feeding conveyor table 3 and are fixed to the upper surface of the integrated electrical control box 7.

[0069] A support plate 9 is fixed on the longitudinal inner wall of the middle part of the support mounting plate 8. A top support telescopic cylinder 10 is fixed in the middle of the upper surface of the support plate 9. A horizontal lifting support plate 11 is fixed at the upper telescopic end of the top support telescopic cylinder 10. Three horizontally spaced top support plates 12 are fixed on the upper surface of the lifting support plate 11. The top support plates 12 are transparent acrylic plates.

[0070] The inner bottom surface of the feeding conveyor 3 is provided with three lifting clearance openings 13 corresponding to the three top support plates 12. The lifting clearance openings 13 are located between two adjacent conveying rollers 4.

[0071] A rotary drive motor 14 is fixed in the middle of the upper surface of the support mounting plate 8. The output shaft of the rotary drive motor 14 passes downward through the support mounting plate 8 and is fixed to a top turntable 15. Four centrally symmetrical lifting and telescopic cylinders 16 are fixed on the lower surface of the top turntable 15. A horizontal square lifting seat 17 is fixed at the lower telescopic end of the four lifting and telescopic cylinders 16.

[0072] An industrial vision camera 18 is fixed in the middle of the inner top surface of the square lifting seat 17. The industrial vision camera 18 is a hyperspectral camera, which can measure the size and appearance defects of the brake pads.

[0073] A signal transmission processor 19 is fixed in the middle of the upper surface of the square lifting seat 17.

[0074] The lower surface of the square lifting seat 17 is also fixed with four centrally symmetrical guide vertical plates 20. Each guide vertical plate 20 is provided with a vertically extending guide groove 21, and a drive slider 22 is slidably installed in the guide groove 21.

[0075] A detection base 23 is fixed on the inner end face of the drive slider 22, and a laser emitter 24 and a laser receiver 25 are fixed on the outer end face of the detection base 23 from top to bottom.

[0076] Four centrally symmetrical rotation drive modules 26 are fixed on the lower surface of the square lifting seat 17. The lower end of the rotation drive module 26 is rotatably connected to a threaded drive rod 27. The threaded drive rod 27 passes through and is threadedly connected to the drive slider 22. By rotating the drive module 26 to drive the threaded drive rod 27 to rotate, the drive slider 22 can be controlled to move up and down along the guide groove 21, so that the laser emitter 24 and laser receiver 25 located on both sides can be matched. Then, by controlling the extension of the lifting telescopic cylinder 16, the square lifting seat 17 is driven to move down as a whole, so that the thickness of the brake pad pushed out by the top support plate 12 can be measured. By controlling the movement of the drive slider 22, the other laser receiver 25 and laser emitter 24 can be matched, so that the laser emission direction can be reversed, thereby performing a secondary comparison measurement. By starting the rotation drive motor 14, the square lifting seat 17 is driven to rotate periodically at a certain angle, so that multi-directional thickness measurement of the brake pad can be realized.

[0077] An observation window 28 is provided on the longitudinal side wall of the upper half of the support mounting plate 8, and a main control panel 29 is fixed on the longitudinal side wall of the lower half of the support mounting plate 8.

[0078] The high-precision detection component has a workpiece conveying and concentrating mechanism on one side of its horizontal direction. The workpiece conveying and concentrating mechanism includes two longitudinally symmetrical support side plates 30. The two support side plates 30 are respectively located on the longitudinal sides of the feeding conveying table 3. The upper end of the support side plate 30 is higher than the upper surface of the feeding conveying table 3, and the lower end of the support side plate 30 is welded to the upper surface of the horizontal support base 1.

[0079] Two transversely symmetrical side-push telescopic cylinders 31 are fixed on the longitudinal inner wall near the upper end of each support side plate 30. The telescopic ends of the two side-push telescopic cylinders 31 are fixed with a conveyor mounting frame 32. The conveyor mounting frame 32 is a U-shaped frame with a longitudinal opening. Support rollers 33 are rotatably installed at the transverse ends of the conveyor mounting frame 32. A conveyor belt 34 is sleeved between the two transversely opposite support rollers 33. The lower end of the conveyor belt 34 is slightly higher than the upper end of the conveyor roller 4. When the brake pad is placed on the conveyor roller 4, its side wall can be seamlessly fitted with the conveyor belt 34.

[0080] Each conveyor mounting frame 32 has a conveyor motor 35 fixed at one end of its upper surface. The output shaft of the conveyor motor 35 passes downward through the conveyor mounting frame 32 and is fixed to the center of the upper end face of the support roller 33.

[0081] The sorting and rejection assembly is located on one side of the feeding and conveying assembly. The sorting and rejection assembly includes an integrated housing 36, which is a vertically arranged square box. The lower end of the integrated housing 36 is fixed to one side of the upper surface of the horizontal support base 1 by bolts.

[0082] A steering drive motor 37 is fixed on the inner top surface of the integrated housing 36. The output shaft of the steering drive motor 37 passes upward through the integrated housing 36 and is fixed with a transfer connecting plate 38. Four centrally symmetrical hydraulic telescopic cylinders 39 are fixed at the side edge of the upper surface of the transfer connecting plate 38. A horizontal sorting turntable 40 is fixed at the upper telescopic end of the four hydraulic telescopic cylinders 39. The sorting turntable 40 is located below the last conveying roller 4.

[0083] The upper surface of the sorting turntable 40 is provided with a transverse flipping groove 41, and a flipping guide plate 42 is provided in the flipping groove 41. The root of the flipping guide plate 42 is rotatably installed on the longitudinal inner wall of the flipping groove 41 near the opening.

[0084] A dual-output shaft motor 43 is fixed to one side of the lower surface of the sorting turntable 40. Each output shaft of the dual-output shaft motor 43 is fixed to a drive wheel 44. Two mounting notches 45 are provided on the sorting turntable 40. The mounting notches 45 are set directly opposite the drive wheel 44. A driven wheel 46 is rotatably mounted in the mounting notch 45. The driven wheel 46 is fixed to the tilting guide plate 42 through a connecting shaft. A transmission belt 47 is sleeved between the drive wheel 44 and the driven wheel 46.

[0085] The integrated chassis 36 is provided with a material unloading guide mechanism on the two longitudinal end faces and the transverse end face away from the material feeding and conveying component. The material unloading guide mechanism includes a hinge seat 48, which is fixed on the outer side wall of the integrated chassis 36 near the upper end. A material unloading slide 49 is hinged inside the hinge seat 48.

[0086] A swing connecting seat 50 is fixed on the lower surface of the unloading slide 49. Two symmetrical side-swing telescopic cylinders 51 are respectively provided below the unloading slide 49. One end of the side-swing telescopic cylinder 51 is hinged to the outer side wall of the integrated housing 36 near the lower end, and the other end is hinged to the swing connecting seat 50.

[0087] The working process of this equipment can be divided into four continuous stages: material feeding and conveying, precise positioning and multi-dimensional detection, workpiece alignment, and sorting and rejection. The specific process is as follows:

[0088] 1. Feeding and conveying stage: After the equipment is started, the drive motor 6 runs and drives all the conveying rollers 4 to rotate synchronously through the sprocket transmission mechanism in the conveying transmission box 5.

[0089] The brake pads to be tested are placed on the concave platform of the feeding conveyor 3 and driven by the conveying rollers 4 arranged at equal intervals to be conveyed forward stably in the transverse direction.

[0090] 2. Precise positioning and multi-dimensional detection stage: When the brake pad is delivered to the underside of the high-precision detection component, the top support telescopic cylinder 10 is activated, pushing the lifting pallet 11 and the three top support plates 12 to rise. The top support plates 12 pass through the lifting clearance opening 13 in the loading conveyor table 3, lifting the brake pad from the conveying roller 4 and keeping it in a horizontal state, providing a stable support benchmark for subsequent detection. Subsequently, the top lifting telescopic cylinder 16 extends, driving the square lifting seat 17 to move down to the detection position.

[0091] Four rotation drive modules 26 operate separately, driving the threaded drive rod 27 to rotate, causing the drive slider 22 to move down along the guide groove 21 of the guide vertical plate 20, adjusting the height of the laser emitter 24 and the laser receiver 25, so that the laser transceivers on both sides are matched and aligned, and the initial thickness measurement of the brake pad is performed; then the rotation drive module 26 operates again, adjusting the position of the drive slider 22, switching to another set of laser transceivers (laser receiver 25 and laser emitter 24) to match, and reversing the laser emission direction to perform comparative measurement to ensure the accuracy of the thickness data;

[0092] At the same time, the hyperspectral industrial vision camera 18 inside the square lifting seat 17 is activated to simultaneously scan and detect the shape, size and surface defects of the brake pads. The detection data is transmitted to the signal transmission processor 19 in real time for analysis and processing.

[0093] To achieve multi-directional, blind-angle-free inspection, the rotary drive motor 14 drives the square lifting seat 17 to rotate periodically at a certain angle, completing the thickness re-measurement and appearance re-inspection of the brake pads in different directions. All inspection data are finally summarized to the main control panel 29 for judgment.

[0094] 3. Workpiece alignment stage: After inspection, the top support telescopic cylinder 10 retracts, and the brake pad falls back onto the conveyor roller 4 for continued conveying. When the brake pad passes the workpiece conveying and concentrating mechanism, the side push telescopic cylinders 31 on both side support plates 30 extend synchronously, pushing the conveyor mounting frame 32 towards the center, so that the conveyor belts 34 on both sides fit against the longitudinal sidewalls of the brake pad. Subsequently, the conveyor motor 35 starts, driving the conveyor belts 34 to rotate, centering and aligning the brake pad, ensuring that it maintains a stable posture and enters the subsequent sorting stage according to a specific path.

[0095] 4. Sorting and rejection stage: The brake pads that have completed inspection and correction are transported to the sorting and rejection component. The hydraulic telescopic cylinder 39 is extended to drive the sorting turntable 40 to move upward as a whole, reducing the distance between it and the feeding conveyor table 3 to prevent brake pad damage caused by excessive drop height. The steering drive motor 37 in the integrated housing 36 drives the transfer connecting plate 38 and the sorting turntable 40 to rotate to a specified angle according to the size data measured by the high-precision detection component and the judgment result of the main control panel 29, so as to sort and unload qualified and unqualified brake pads.

[0096] The hydraulic telescopic cylinder 39 is retracted, and the dual-output shaft motor 43 is started to run. Through the cooperation of the active rotating wheel 44, the transmission belt 47 and the driven rotating wheel 46, the tilting guide plate 42 is driven to rotate in the tilting groove 41, so that the brake pad slides down along the inclined guide plate into the unloading slide 49 for collecting qualified or unqualified products.

[0097] During this process, the side-swing telescopic cylinder 51 on the outside of the integrated chassis 36 can adjust the tilt angle of the unloading slide 49, so that the brake pads can slide smoothly into the material basket to complete the final sorting and rejection work.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A high-precision sorting and defective product rejection device for brake pad thickness, characterized in that: The system includes a horizontal support platform, on which a feeding and conveying assembly, a high-precision detection assembly, and a sorting and rejection assembly are sequentially arranged. The feeding and conveying assembly includes a feeding and conveying platform, which is a square platform with a concave upper surface. Several transversely spaced and longitudinally extended conveying rollers are rotatably arranged inside the feeding and conveying platform. An integrated electrical control box is provided at the lower center of the feeding conveyor platform, and the integrated electrical control box is fixed on the upper surface of the horizontal support base. The high-precision detection component includes a support mounting plate, which is a U-shaped plate with the opening facing downwards. The lower two ends of the support mounting plate cross over the feeding conveyor and are fixed to the upper surface of the integrated electrical control box. A rotary drive motor is fixed in the middle of the upper surface of the support mounting plate. The output shaft of the rotary drive motor passes downward through the support mounting plate and is fixed with a top turntable. A square lifting seat is provided below the top turntable. An industrial vision camera, which is a hyperspectral camera, is fixed in the middle of the inner top surface of the square lifting base. A signal transmission processor is fixed in the middle of the upper surface of the square lifting seat; The lower surface of the square lifting seat is also fixed with four centrally symmetrical guide vertical plates. Each guide vertical plate is provided with a vertically extending guide groove, and a drive slider is slidably installed in the guide groove. A detection base is fixed on the inner end face of the drive slider, and a laser emitter and a laser receiver are fixed sequentially from top to bottom on the outer end face of the detection base. Four centrally symmetrical lifting and telescopic cylinders are fixed on the lower surface of the top turntable, and the lower telescopic ends of the four lifting and telescopic cylinders are fixed to the upper surface of the square lifting seat. The lower surface of the square lifting seat is also fixed with four centrally symmetrical rotation drive modules. The lower end of the rotation drive module is rotatably connected to a threaded drive rod, which passes through and is threadedly connected to the drive slider. The drive module rotates the threaded drive rod, which in turn controls the drive slider to move up and down along the guide groove, aligning the laser emitters and receivers on both sides. Then, by controlling the extension of the lifting telescopic cylinder, the square lifting seat is moved down as a whole to measure the thickness of the brake pads. By controlling the movement of the drive slider, the other laser receiver and laser emitter are aligned, allowing the laser emission direction to be reversed for a secondary comparison measurement. By starting the drive motor, the square lifting seat is rotated periodically at a certain angle, enabling multi-directional thickness measurement of the brake pads.

2. The high-precision sorting and defective product rejection equipment for brake pad thickness according to claim 1, characterized in that: The sorting and rejection assembly is located on one side of the feeding and conveying assembly. The sorting and rejection assembly includes an integrated housing, which is a vertically arranged square box. The lower end of the integrated housing is fixed to one side of the upper surface of the horizontal support base by bolts. A steering drive motor is fixed on the inner top surface of the integrated housing. The output shaft of the steering drive motor passes upward through the integrated housing and is fixed with a transfer connecting plate. Four centrally symmetrical hydraulic telescopic cylinders are fixed at the upper surface side edge of the transfer connecting plate. A horizontal sorting turntable is fixed at the upper telescopic end of the four hydraulic telescopic cylinders. The sorting turntable is located below the last conveying roller and maintains a certain vertical working distance from the conveying roller. The upper surface of the sorting turntable is provided with a transverse flipping groove, and a flipping guide plate is provided in the flipping groove. The root of the flipping guide plate is rotatably installed on the longitudinal inner wall of the flipping groove near the opening.

3. The high-precision sorting and defective product rejection equipment for brake pad thickness according to claim 2, characterized in that: The horizontal support platform is a square platform that extends laterally, and two laterally symmetrical conveying support frames are welded to the upper surface of the horizontal support platform. The lower end of the feeding conveyor is fixed to the upper surface of the horizontal portion of the two conveying support frames; Each longitudinal outer wall of the feeding conveyor is fixed with a conveying transmission box, and a sprocket transmission mechanism is provided inside the conveying transmission box. A transmission shaft is fixed at the center of the longitudinal end face of each conveying roller, and the end of the transmission shaft passes through the feeding conveyor and is connected to the sprocket transmission mechanism inside the conveying transmission box for transmission. A drive motor is fixed on the longitudinal outer wall of one of the conveying transmission boxes, and the end of the output shaft of the drive motor is connected to the sprocket transmission mechanism inside the conveying transmission box for transmission.

4. The high-precision sorting and defective product rejection equipment for brake pad thickness dimensions according to claim 3, characterized in that: A support plate is fixed on the longitudinal inner wall of the middle part of the support mounting plate. A top support telescopic cylinder is fixed in the middle of the upper surface of the support plate. A horizontal lifting plate is fixed at the upper telescopic end of the top support telescopic cylinder. Three horizontally spaced top support plates are fixed on the upper surface of the lifting plate. The top support plates are transparent acrylic plates. The top support plates are used to push the brake pads away from the conveyor roller and keep the brake pads in a horizontal state. The transparent acrylic material does not block the laser detection optical path. The inner bottom surface of the feeding conveyor platform has three lifting clearance openings corresponding to the three top support plates, and the lifting clearance openings are located between two adjacent conveying rollers.

5. The high-precision sorting and defective product rejection equipment for brake pad thickness according to claim 4, characterized in that: An observation window is provided on the longitudinal side wall of the upper half of the support mounting plate, and a main control panel is fixed on the longitudinal side wall of the lower half of the support mounting plate.

6. The high-precision sorting and defective product rejection equipment for brake pad thickness dimensions according to claim 5, characterized in that: The high-precision detection component has a workpiece conveying and concentrating mechanism on one side of its lateral side. The workpiece conveying and concentrating mechanism includes two longitudinally symmetrical support side plates. The two support side plates are respectively arranged on the longitudinal sides of the feeding conveying table. The upper end of the support side plate is higher than the upper surface of the feeding conveying table, and the lower end of the support side plate is welded to the upper surface of the horizontal support base. Two transversely symmetrical side-push telescopic cylinders are fixed on the longitudinal inner wall near the upper end of each of the support side plates. A conveying mounting frame is fixed to the telescopic end of the two side-push telescopic cylinders. The conveying mounting frame is a U-shaped frame with a longitudinal opening. Support rollers are rotatably installed at both ends of the conveying mounting frame. A conveyor belt is sleeved between the two transversely opposite support rollers. The lower end of the conveyor belt is slightly higher than the upper end of the conveyor roller. Each of the conveying mounting frames has a conveying motor fixed at one end of its upper surface. The output shaft of the conveying motor passes downward through the conveying mounting frame and is fixed to the center of the upper end face of the support roller.

7. The high-precision sorting and defective product rejection equipment for brake pad thickness according to claim 6, characterized in that: A dual-output-shaft motor is fixed to one side of the lower surface of the sorting turntable. Each output shaft of the dual-output-shaft motor is fixed to a drive wheel. Two mounting notches are provided on the sorting turntable, and the mounting notches are positioned directly opposite the drive wheels. A driven wheel is rotatably mounted inside the mounting notches. The driven wheel is fixed to the tilting guide plate via a connecting shaft. A transmission belt is sleeved between the drive wheel and the driven wheel.

8. The high-precision sorting and defective product rejection equipment for brake pad thickness according to claim 7, characterized in that: The integrated chassis is provided with a material unloading guide mechanism on the two longitudinal end faces and the transverse end face away from the material feeding and conveying component. The material unloading guide mechanism includes a hinge seat, which is fixed on the outer side wall of the integrated chassis near the upper end. A material unloading slide is hinged in the hinge seat. The lower surface of the feeding slide is fixed with a swing connecting seat. Two symmetrical side-swing telescopic cylinders are respectively provided below the feeding slide. One end of the side-swing telescopic cylinder is hinged to the outer side wall of the integrated chassis near the lower end, and the other end is hinged to the swing connecting seat.

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