A spring testing device

Abstract

This invention relates to the field of spring testing technology, specifically to a spring testing device. It includes an inspection frame, a rotary motor, a PLC controller, a multi-directional motion platform, a clamping frame, and a loading platform. A transfer frame is connected to the inspection frame via a first linear transmission module. A multi-degree-of-freedom vibration platform is mounted on the transfer frame, and a horizontally moving slide is connected to the multi-degree-of-freedom vibration platform. The reciprocating stroke of the horizontal slide changes periodically. Both the horizontal slide and the loading platform are connected to the multi-directional motion platform. Two electric actuators connect the clamping frame and the loading platform. The clamping frame is equipped with a clamping drive component, and two symmetrically arranged clamps are connected to the clamping drive component. A driven clamp is rotatably mounted on one clamp. This invention solves the problem of separate mechanical and visual inspection operations in existing spring testing devices through the coordinated design of the clamping frame, electric actuators, transfer frame, multi-directional motion platform, and PLC controller.

Description

Technical Field

[0001] This invention relates to the field of spring testing technology, specifically to a spring testing device. Background Technology

[0002] As a core elastic component in mechanical equipment, the mechanical properties and surface quality of springs directly determine the operational stability and service life of the equipment. Therefore, the testing process is a critical control point in the spring production process. Currently, the existing technologies in the field of spring testing mainly face the following technical problems:

[0003] In existing spring testing technology, mechanical performance testing and surface defect detection require two separate sets of equipment. First, the spring must be transferred to the mechanical testing equipment, where mechanical parameters are collected using probes and other components. After testing, the spring is manually moved to the fluorescent spraying station for surface treatment, and then transferred to the visual inspection equipment to identify defects using a vision system. If defective products are detected, they must be manually marked and classified. This multi-equipment, decentralized operation and manual transfer mode has the following fatal flaws:

[0004] First, the process continuity is poor. Manually transferring springs is not only time-consuming and labor-intensive, but also prone to damage due to operational errors, affecting the accuracy of the test results. Second, the equipment switching cost is high. Different testing equipment have different positioning benchmarks and clamping methods, requiring recalibration after each transfer. The testing cycle for a single spring is usually as long as 5-8 minutes, which is difficult to meet the high-efficiency testing needs of large-scale production. Third, data collaboration is insufficient. Mechanical testing and appearance testing data are stored in different equipment systems, requiring manual summarization and analysis, which can easily lead to data mismatch, omissions, and other problems, making it impossible to achieve intelligent control of the testing process.

[0005] Based on this, the present invention provides a spring detection device to solve the problems mentioned in the background art. Summary of the Invention

[0006] This invention addresses the technical problems existing in the prior art by providing a spring detection device.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a spring detection device, comprising an inspection frame, a rotary motor, a PLC controller, a multi-directional motion platform, a clamping frame, and a loading platform. A moving frame is connected to the inspection frame via a first linear transmission module. A multi-degree-of-freedom vibration platform is mounted on the moving frame. A horizontally moving slide is connected to the multi-degree-of-freedom vibration platform, and the reciprocating stroke of the horizontal slide changes periodically. Both the horizontal slide and the loading platform are connected to the multi-directional motion platform. Two electric actuators are connected between the clamping frame and the loading platform. A clamping drive is provided on the clamping frame. The upper part is connected to two symmetrically arranged clamps. One clamp is rotatably mounted with a driven clamp seat, and the other clamp is rotatably mounted with an active clamp seat driven by a rotary motor. The inspection frame has a side-opening spray chamber, in which a fluorescent spraying component, a heating rod, and an ultraviolet decomposition lamp are installed respectively. A second linear drive module is installed on the top of the inspection frame. A conversion frame is driven and connected to the second linear drive module. The conversion frame is slidably connected to the inspection frame. A probe, a marker pen, and a vision probe are installed on the conversion frame respectively. The data terminals of the probe and the vision probe are both connected to the PLC controller.

[0008] As a preferred technical solution of the present invention, a display is installed on the end face of the inspection frame, and the data terminals of the display, the vision probe and the probe are all connected to the PLC controller. The PLC controller is fixedly installed on the inspection frame, and corrugated protective plates are installed on both sides of the moving frame. The other side of the two corrugated protective plates is fixedly connected to the inspection frame.

[0009] As a preferred embodiment of the present invention, the multi-degree-of-freedom vibration platform includes a servo motor mounted on a moving frame, a transmission shaft rotatably connected to the moving frame, and a vertical slide slidably connected to the moving frame. The output shaft of the servo motor is fixedly connected to the transmission shaft. A vertical transmission wheel is mounted on the transmission shaft. In a clockwise direction, four first transmission teeth and four first empty teeth are alternately arranged on the vertical transmission wheel, and the central angles of the four first transmission teeth increase by 10° in a clockwise direction. A first rack plate is mounted on the vertical slide, and the four first transmission teeth alternately mesh with the first rack plate. A horizontal slide is slidably connected to the vertical slide. A return spring is provided between the horizontal slide and the vertical slide, and a return spring is also provided between the vertical slide and the moving frame. A horizontal drive component is installed between the vertical slide and the horizontal slide.

[0010] As a preferred embodiment of the present invention, the horizontal drive component includes a slide shaft rotatably connected to a vertical slide, a horizontal transmission wheel mounted on the slide shaft, a fixed shaft rotatably mounted on the sliding frame, synchronous bevel gears mounted on both the fixed shaft and the transmission shaft, two synchronous bevel gears meshing orthogonally, a synchronous slide groove with an open top and slidably connected to the slide shaft is fixedly opened inside the fixed shaft, the cross-section of the synchronous slide groove and the slide shaft are both regular hexagonal, along the clockwise direction, four second transmission teeth and four second hollow teeth are alternately arranged on the horizontal transmission wheel, a second rack plate is mounted on the horizontal slide, and the four second transmission teeth alternately mesh with the second rack plate.

[0011] As a preferred technical solution of the present invention, the sum of the central angles of the four first transmission teeth and the four first hollow teeth, and the sum of the central angles of the four second transmission teeth and the four second hollow teeth are all 360°. The first transmission teeth, the second transmission teeth, the first rack plate and the second rack plate are all provided with an impact-resistant ceramic protective coating.

[0012] As a preferred technical solution of the present invention, the multi-directional motion platform includes a lifting platform, two lifting push rods are assembled between the bottom surface of the lifting platform and the top surface of the horizontal slide, a corrugated telescopic cover is installed between the horizontal slide and the lifting platform, an electric rotator is installed on the lifting platform, a dual-axis motion platform is installed on the rotating surface of the electric rotator, and the dual-axis motion platform is connected to the loading platform by transmission.

[0013] As a preferred technical solution of the present invention, the fluorescent spraying assembly includes a fluorescent reagent storage tank installed on the inspection frame, a spray pipe installed in the spraying chamber, a pump body installed on the bottom surface of the fluorescent reagent storage tank, the outlet port of the pump body being connected to the spray pipe through a pipe, a set of regularly distributed spray heads installed on the bottom surface of the spray pipe, and an exhaust fan installed on the inspection frame and adjacent to the spraying chamber.

[0014] As a preferred technical solution of the present invention, a transparent glass part is provided at the center of the loading platform, and a light source is provided on the loading platform and at a position directly below the transparent glass part.

[0015] As a preferred technical solution of the present invention, the clamping drive includes a clamping screw rotatably connected to the clamping frame, a clamping motor is mounted on the side of the clamping frame, the output shaft end of the clamping motor is fixedly connected to the clamping screw, the clamping screw is symmetrically provided with a forward thread section and a reverse thread section, the forward thread section and the reverse thread section are respectively connected to two clamps for transmission, and both clamps are slidably connected to the clamping frame.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This invention solves the problem of fragmented mechanical and visual inspection operations in existing spring testing devices by integrating a clamping frame, electric actuator, conversion frame, multi-directional motion platform, and PLC controller. The electric actuator drives the clamping frame to automatically switch the spring between the spraying chamber and the testing station without manual transfer. Driven by the second linear transmission module, the conversion frame can quickly switch the working positions of the probe, vision probe, and marking pen, realizing continuous operation of mechanical parameter acquisition, fluorescent visual inspection, and non-conforming marking. At the same time, the PLC controller receives the detection data from the probe and vision probe in real time and displays the results synchronously on the display screen, eliminating the need for manual summarization and analysis. This integrated and collaborative operation shortens the detection cycle of a single spring, improves detection efficiency, and avoids spring damage and data mismatch caused by manual transfer, which is significantly different from the existing technology's fragmented multi-device and manual transfer mode.

[0018] 2. To address the problem of uneven coating thickness in existing fixed spraying methods, this invention utilizes the coordinated transmission of a multi-degree-of-freedom vibration platform and a horizontal drive component to construct a three-dimensional variable-amplitude spraying trajectory. When the servo motor drives the transmission shaft to rotate, on one hand, the first transmission tooth on the vertical transmission wheel, with its center angle increasing by 10°, alternately meshes with the first rack plate, cooperating with the return spring to drive the vertical slide to perform variable-amplitude vertical movement. On the other hand, the fixed shaft is driven to rotate through a synchronous bevel gear, and the cooperation between the regular hexagonal slide shaft and the synchronous slide groove transmits power to the horizontal transmission wheel, causing its second transmission tooth to mesh with the second rack plate, driving the horizontal slide to perform synchronous variable-amplitude horizontal movement. Simultaneously, the rotary motor drives the active clamp to rotate the spring, ensuring that there are no dead angles in the spraying. This linkage design of single-motor driven bidirectional variable-amplitude movement and spring rotation reduces the error in the uniformity of the fluorescent coating thickness, providing a clear imaging basis for subsequent spring problem identification.

[0019] 3. This invention utilizes the synergistic effect of organic fluorescent reagents, heating rods, and ultraviolet decomposition lamps to replace the chemical cleaning methods of existing technologies, achieving green and efficient removal of fluorescent residues. During spraying, organic decomposable fluorescent reagents are selected. After testing, the electric push rod sends the spring back to the spraying chamber, and the heating rod heats it to the set temperature. Combined with ultraviolet decomposition lamp irradiation, the fluorescent residue rate can be effectively reduced. This physical decomposition method does not require chemical cleaning agents, thus avoiding corrosion of the spring material by cleaning agents and reducing wastewater discharge, meeting environmental protection requirements. Compared with the complex process and high pollution problems of existing cleaning and drying technologies, it has significant environmental and economic advantages. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a spring detection device.

[0021] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0022] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0023] Figure 4 This is a structural schematic diagram of the loading platform and the clamping drive component;

[0024] Figure 5 A schematic diagram of the structure of an electric rotator;

[0025] Figure 6 This is a schematic diagram of the probe and marking pen.

[0026] Figure 7 A structural schematic diagram of the lifting platform and lifting push rod;

[0027] Figure 8 A schematic diagram of the horizontal slide and the lifting push rod;

[0028] Figure 9 for Figure 8 A magnified view of the structure at point B in the middle;

[0029] Figure 10 This is a schematic diagram of the vertical carriage and the return spring.

[0030] Figure 11 This is a schematic diagram of the vertical transmission wheel and the first hollow tooth section.

[0031] The components represented by each number in the attached diagram are listed below: 1. Inspection frame; 2. PLC controller; 3. Clamping frame; 4. Loading platform; 5. First linear drive module; 6. Shifting frame; 7. Horizontal slide; 8. Electric actuator; 9. Transparent glass section; 10. Clamping clamp; 11. Clamping drive component; 12. Driven clamp; 13. Rotary motor; 14. Active clamp; 15. Spray booth; 16. Heating rod; 17. Ultraviolet decomposition lamp; 18. Second linear drive module; 19. Conversion frame; 20. Probe; 21. Marking pen; 22. Vision probe; 23. Display; 24. Corrugated frame. 25. Guard plate; 26. Servo motor; 27. Drive shaft; 28. Vertical slide; 29. ​​Vertical drive wheel; 30. First drive gear; 31. First hollow gear; 32. First rack plate; 33. Return spring; 34. Sliding shaft; 35. Horizontal drive wheel; 36. Fixed shaft; 37. Second drive gear; 38. Second hollow gear; 39. Second rack plate; 40. Lifting platform; 41. Lifting push rod; 42. Corrugated telescopic cover; 43. Electric rotator; 44. Dual-axis motion platform; 45. Fluorescent reagent storage tank; 46. Spray pipe; 47. Exhaust fan; 48. Synchronous bevel gear. Detailed Implementation

[0032] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0033] The present invention provides the following preferred embodiments:

[0034] like Figure 1-11 As shown, a spring detection device includes an inspection frame 1, a rotary motor 13, a PLC controller 2, a multi-directional motion platform, a clamping frame 3, and a loading platform 4.

[0035] A moving frame 6 is connected to the inspection frame 1 via a first linear transmission module 5. Corrugated guard plates 24 are installed on both sides of the moving frame 6, and the other side of the two corrugated guard plates 24 is fixedly connected to the inspection frame 1.

[0036] A multi-degree-of-freedom vibration platform is installed on the frame 6, and a horizontal slide 7 that moves synchronously horizontally and vertically is connected to the multi-degree-of-freedom vibration platform;

[0037] The reciprocating stroke of the horizontal slide 7 changes periodically;

[0038] The multi-degree-of-freedom vibration platform includes a servo motor 25 mounted on the transfer frame 6, a drive shaft 26 rotatably connected to the transfer frame 6, and a vertical carriage 27 slidably connected to the transfer frame 6;

[0039] The output shaft end of the servo motor 25 is fixedly connected to the transmission shaft 26, and a vertical transmission wheel 28 is mounted on the transmission shaft 26.

[0040] When the fluorescent reagent is sprayed, the servo motor 25 is turned on. In other states, the servo motor 25 is turned off, and the horizontal slide 7 and the vertical slide 27 remain stationary.

[0041] Along the clockwise direction, four first transmission teeth 29 and four first empty teeth 30 are alternately arranged on the vertical transmission wheel 28, and the central angles corresponding to the four first transmission teeth 29 increase by 10° along the clockwise direction.

[0042] A first rack plate 31 is mounted on the vertical carriage 27, and four first transmission teeth 29 alternately mesh with the first rack plate 31.

[0043] The horizontal slide block 7 is slidably connected to the vertical slide 27. A return spring 32 is provided between the horizontal slide block 7 and the vertical slide 27. A return spring 32 is also provided between the vertical slide 27 and the moving frame 6. A horizontal drive component is installed between the vertical slide 27 and the horizontal slide block 7.

[0044] When the fluorescent reagent is sprayed, the servo motor 25 starts and drives the vertical transmission wheel 28 to rotate through the transmission shaft 26. The four first transmission teeth 29 with an increasing center angle of 10° alternately mesh with the first rack plate 31. With the elastic reset of the return spring 32, the vertical slide 27 can be driven to achieve a vertical reciprocating motion with a periodic and gradual change in stroke.

[0045] Meanwhile, the drive shaft 26 drives the horizontal drive component in conjunction with the synchronous bevel gear 47 to realize the synchronous variable amplitude horizontal movement of the horizontal slide block 7;

[0046] This design, which uses a single motor to drive bidirectional variable amplitude motion, not only reduces the number of driving components, lowers the size of the equipment and energy consumption, but also enables the spray head to perform all-round, no-dead-angle fluorescent spraying on the spring under test through variable amplitude motion, solving the problem of uneven coating that is easy to occur in traditional fixed spraying.

[0047] When not spraying, the servo motor 25 is turned off, and the horizontal slide 7 and the vertical slide 27 remain stationary, ensuring stability during inspection and balancing spraying efficiency and inspection accuracy.

[0048] The horizontal drive component includes a slide shaft 33 rotatably connected to the vertical slide 27, a horizontal transmission wheel 34 mounted on the slide shaft 33, a fixed shaft 35 rotatably mounted on the shift frame 6, and synchronous bevel gears 47 mounted on both the fixed shaft 35 and the transmission shaft 26, with the two synchronous bevel gears 47 meshing orthogonally.

[0049] The fixed shaft 35 has a synchronous slide groove with an open top and slidably connected to the slide shaft 33. Both the synchronous slide groove and the slide shaft 33 have a regular hexagonal cross section.

[0050] Along the clockwise direction, four second transmission teeth 36 and four second empty teeth 37 are alternately arranged on the horizontal transmission wheel 34, and a second rack plate 38 is installed on the horizontal slide 7. The four second transmission teeth 36 are alternately engaged with the second rack plate 38.

[0051] The sum of the central angles of the four first transmission teeth 29 and the four first empty teeth 30, and the sum of the central angles of the four second transmission teeth 36 and the four second empty teeth 37 are all 360°. The first transmission teeth 29, the second transmission teeth 36, the first rack plate 31 and the second rack plate 38 are all provided with an impact-resistant ceramic protective coating.

[0052] The cooperation between the regular hexagonal sliding shaft 33 and the synchronous sliding groove not only realizes the transmission of rotational power from the fixed shaft 35 to the sliding shaft 33, but also allows the sliding shaft 33 to move vertically synchronously with the horizontal sliding block 7, thus solving the problem of compatibility between rotational power and linear displacement.

[0053] The alternating meshing of the four second transmission teeth 36 and the second hollow teeth 37 on the horizontal transmission wheel 34, in conjunction with the return spring 32, can precisely realize the periodic amplitude reciprocating motion of the horizontal slide 7, which, together with the motion of the vertical slide 27, forms a three-dimensional spraying trajectory.

[0054] In addition, the impact-resistant ceramic protective coating on the first transmission gear 29, the second transmission gear 36, the first rack plate 31, and the second rack plate 38 can significantly improve the wear resistance and impact resistance of the components, reduce the impact of vibration on transmission accuracy during the spraying process, extend the service life of the equipment, and reduce maintenance frequency and cost.

[0055] Both the horizontal slide 7 and the loading platform 4 are connected to the multi-directional motion platform;

[0056] The multi-directional motion platform includes a lifting platform 39, with two lifting push rods 40 mounted between the bottom surface of the lifting platform 39 and the top surface of the horizontal slide 7. A corrugated telescopic cover 41 is installed between the horizontal slide 7 and the lifting platform 39. An electric rotator 42 is installed on the lifting platform 39, and a dual-axis motion platform 43 is installed on the rotating surface of the electric rotator 42. The dual-axis motion platform 43 is connected to the loading platform 4 via a transmission.

[0057] Two lifting push rods 40 can synchronously drive the lifting platform 39 to rise and fall smoothly, flexibly adjust the relative height between the loading platform 4 and the probe 20 and vision probe 22, and adapt to spring detection of different specifications;

[0058] The electric rotator 42 can drive the dual-axis motion platform 43 and the loading platform 4 to achieve 360° rotation. Combined with the X and Y axis fine adjustment functions of the dual-axis motion platform 43, it can achieve precise positioning of any detection point of the spring under test, avoiding the detection blind spots of traditional testing equipment.

[0059] The corrugated telescopic cover 41 can effectively block dust, oil and impurities, protect the lifting push rod 40 and internal transmission components from contamination, and ensure the stability and accuracy of multi-axis motion.

[0060] The overall modular design facilitates later maintenance and component replacement, improving the practicality and reliability of the equipment;

[0061] A transparent glass section 9 is provided at the center of the loading platform 4, and a light source is provided on the loading platform 4 and at the position directly below the transparent glass section 9.

[0062] Two electric actuators 8 are connected between the clamping frame 3 and the loading platform 4;

[0063] Before fluorescent spraying, the synchronous drive of the two electric push rods 8 makes the clamping frame 3 move away from the loading platform 4 and the transparent glass part 9 on the loading platform 4. After the clamping frame 3 is displaced, it drives the two clamps 10 and the spring to be tested to move into the spraying chamber 15 for fluorescent spraying before testing. The fluorescent reagent is an organic decomposable material.

[0064] The extension and retraction of the electric actuator 8 enables the automatic switching of the clamping frame 3 and the spring between the spraying chamber 15 and the testing station, eliminating the need for manual transfer of the spring to be tested and greatly improving the continuity and efficiency of the testing process.

[0065] During fluorescent spraying, the spring to be tested is moved to an independent spraying chamber 15 to avoid fluorescent reagent splashing and contaminating the probe 20 and vision probe 22, thus ensuring the cleanliness of the testing environment.

[0066] During spraying, a removable anti-stick plate is attached to the inner wall of the spraying chamber 15. The anti-stick plate can be quickly removed and cleaned.

[0067] The use of organically degradable fluorescent reagents provides a foundation for subsequent removal of fluorescent residues, avoiding the problems of traditional fluorescent reagents being difficult to clean and affecting spring performance, while also meeting environmental protection testing standards;

[0068] The clamping frame 3 is provided with a clamping drive unit 11, and two symmetrically arranged clamps 10 are connected to the clamping drive unit 11. A driven clamp seat 12 is rotatably mounted on one clamp 10, and an active clamp seat 14 driven by a rotary motor 13 is rotatably mounted on the other clamp 10.

[0069] The clamping drive component 11 includes a clamping screw rotatably connected to the clamping frame 3. A clamping motor is mounted on the side of the clamping frame 3. The output shaft end of the clamping motor is fixedly connected to the clamping screw. A forward thread section and a reverse thread section are symmetrically arranged on the clamping screw. The forward thread section and the reverse thread section are respectively connected to two clamps 10 for transmission. Both clamps 10 are slidably connected to the clamping frame 3.

[0070] When the clamping motor drives the clamping screw to rotate, the forward thread section and the reverse thread section can drive the two clamps 10 to move synchronously in opposite directions or in opposite directions, so as to realize the fast and symmetrical clamping of springs of different diameters and ensure the center positioning accuracy of the spring to be tested when clamping.

[0071] Driven by the rotary motor 13, the active clamp 14 drives the spring under test to rotate, and the driven clamp 12 rotates synchronously with the spring under test. This not only ensures that the surface coating of the spring under test is evenly covered during fluorescent spraying, but also enables comprehensive circumferential testing of the spring under test during the testing process, thus solving the problem of incomplete local testing caused by fixed clamping.

[0072] In addition, the sliding connection structure between the clamp 10 and the clamping frame 3 is stable and the clamping force is adjustable, which avoids the problem of damaging the spring under test due to excessive clamping or causing displacement during testing due to excessive looseness.

[0073] The inspection frame 1 has a side-opening spray chamber 15, and the spray chamber 15 is equipped with a fluorescent spraying assembly, an electric heating rod 16 and an ultraviolet decomposition lamp 17.

[0074] The fluorescent spraying assembly includes a fluorescent reagent storage tank 44 installed on the inspection frame 1, a spray pipe 45 installed in the spraying chamber 15, a pump body installed on the bottom surface of the fluorescent reagent storage tank 44, the outlet port of the pump body being connected to the spray pipe 45 through a pipe, a set of regularly distributed spray heads installed on the bottom surface of the spray pipe 45, and an exhaust fan 46 installed on the inspection frame 1 and adjacent to the spraying chamber 15.

[0075] The pump pressurizes the fluorescent reagent in the fluorescent reagent tank 44 and delivers it to the spray tube 45. The spray tube 45 forms a uniform mist spray through multiple regularly distributed spray heads, ensuring that the fluorescent coating thickness on the surface of the spring under test is consistent, providing a clear imaging basis for the visual probe 22 to identify defects.

[0076] The exhaust fan 46 can promptly remove excess fluorescent droplets from the spraying chamber 15, preventing droplet accumulation from affecting the spraying effect or corroding the inner wall of the equipment.

[0077] After the spring test is completed, the clamping frame 3 is moved away from the loading platform 4 and the transparent glass part 9 on the loading platform 4 by synchronously driving the two electric push rods 8. After the clamping frame 3 is moved, it drives the two clamps 10 and the spring to be tested to move into the spraying chamber 15 for accelerated decomposition of the sprayed fluorescent material. During accelerated decomposition, the heating rod 16 is heated to the set decomposition temperature, the ultraviolet decomposition lamp 17 is turned on, the decomposition temperature is set to 90℃-150℃, and the wavelength of the ultraviolet decomposition lamp 17 is 254nm.

[0078] Since the fluorescent reagent is made of organic decomposable material, under the action of the heating rod 16 and the ultraviolet decomposition lamp 17, the fluorescent reagent sprayed on the spring under test can be rapidly decomposed, thereby reducing the residual rate of the fluorescent reagent on the spring under test, avoiding the corrosion of the spring material by the fluorescent reagent, and ensuring that the original mechanical properties of the spring under test are not affected.

[0079] A second linear drive module 18 is installed on the top of the inspection frame 1. A conversion frame 19 is connected to the second linear drive module 18. The conversion frame 19 is slidably connected to the inspection frame 1. A probe 20, a marker pen 21 and a vision probe 22 are respectively installed on the conversion frame 19. The data terminals of the probe 20 and the vision probe 22 are both connected to the PLC controller 2.

[0080] Vision probe 22 is a CCD camera;

[0081] A display 23 is mounted on the end face of the inspection frame 1. The data terminals of the display 23, the vision probe 22 and the probe 20 are all connected to the PLC controller 2. The PLC controller 2 is fixedly mounted on the inspection frame 1.

[0082] The second linear drive module 18 drives the conversion frame 19 to slide, which can quickly switch the working positions of probe 20, marker pen 21 and vision probe 22.

[0083] Probe 20 is responsible for collecting mechanical parameters such as the spring constant and stiffness of the spring under test;

[0084] The visual probe 22, combined with the fluorescent coating, identifies surface cracks, dents, and other defects on the spring to be inspected.

[0085] Defective springs are instantly marked with marking pen 21, realizing the integration of mechanical testing, appearance inspection and defect marking. Multi-dimensional testing can be completed without changing equipment, improving testing efficiency.

[0086] The PLC controller 2 receives and processes the detection data, and displays the detection results and defect images in real time on the display 23, which facilitates intuitive judgment by operators, reduces errors from manual reading, and realizes automated and intelligent control of the detection process.

[0087] The above are merely preferred embodiments of the present invention and are 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 spring detection device, comprising a viewing frame (1), a PLC controller (2), a multi-directional motion platform, a clamping frame (3), and a loading platform (4), characterized in that: A moving frame (6) is connected to the inspection frame (1) via a first linear transmission module (5). A multi-degree-of-freedom vibration platform is mounted on the moving frame (6). A horizontal slide (7) that moves synchronously horizontally and vertically is connected to the multi-degree-of-freedom vibration platform. The reciprocating stroke of the horizontal slide (7) changes periodically. Both the horizontal slide (7) and the loading platform (4) are connected to the multi-directional motion platform. Two electric push rods (8) are connected between the clamping frame (3) and the loading platform (4). A clamping drive (11) is provided on the clamping frame (3). Two symmetrically arranged clamps (10) are connected to the clamping drive (11). A driven clamp (12) is rotatably mounted on one clamp (10), and a driven clamp (12) is mounted on the other clamp (10). An active clamp (14) driven by a rotary motor (13) is rotatably mounted. A spraying chamber (15) with a side opening is opened in the inspection frame (1). A fluorescent spraying assembly, an electric heating rod (16) and an ultraviolet decomposition lamp (17) are installed in the spraying chamber (15). A second linear drive module (18) is installed on the top of the inspection frame (1). A conversion frame (19) is connected to the second linear drive module (18). The conversion frame (19) is slidably connected to the inspection frame (1). A probe (20), a marker pen (21) and a vision probe (22) are installed on the conversion frame (19). The data terminals of the probe (20) and the vision probe (22) are connected to the PLC controller (2). The multi-degree-of-freedom vibration platform includes a servo motor (25) mounted on a moving frame (6), a transmission shaft (26) rotatably connected to the moving frame (6), and a vertical carriage (27) slidably connected to the moving frame (6). The output shaft end of the servo motor (25) is fixedly connected to the transmission shaft (26). A vertical transmission wheel (28) is mounted on the transmission shaft (26) in a clockwise direction. The vertical transmission wheel (28) is alternately provided with four first transmission teeth (29) and four first hollow teeth (30) in a clockwise direction. The center angles of the four first transmission teeth (29) increase by 10°. A first rack plate (31) is installed on the vertical slide (27). The four first transmission teeth (29) alternately mesh with the first rack plate (31). The horizontal slide (7) is slidably connected to the vertical slide (27). Return springs (32) are installed between the horizontal slide (7) and the vertical slide (27) and between the vertical slide (27) and the moving frame (6). A horizontal drive component is installed between the vertical slide (27) and the horizontal slide (7). The horizontal drive component includes a slide shaft (33) rotatably connected to a vertical slide (27), a horizontal transmission wheel (34) mounted on the slide shaft (33), a fixed shaft (35) rotatably mounted on the shift frame (6), a synchronous bevel gear mounted on both the fixed shaft (35) and the transmission shaft (26), the two synchronous bevel gears meshing orthogonally, a synchronous slide groove with a top opening fixedly opened inside the fixed shaft (35) and slidingly connected to the slide shaft (33), the cross-section of the synchronous slide groove and the slide shaft (33) are both regular hexagonal, along the clockwise direction, four second transmission teeth (36) and four second empty teeth (37) are alternately arranged on the horizontal transmission wheel (34), a second rack plate (38) is mounted on the horizontal slide (7), the four second transmission teeth (36) alternately mesh with the second rack plate (38); The sum of the central angles of the four first transmission teeth (29) and the four first empty teeth (30) and the sum of the central angles of the four second transmission teeth (36) and the four second empty teeth (37) are all 360°. The first transmission teeth (29), the second transmission teeth (36), the first rack plate (31) and the second rack plate (38) are all provided with an impact-resistant ceramic protective coating. The multi-directional motion platform includes a lifting platform (39), two lifting push rods (40) are installed between the lifting platform (39) and the horizontal slide (7), a corrugated telescopic cover (41) is installed between the horizontal slide (7) and the lifting platform (39), an electric rotator (42) is installed on the lifting platform (39), a dual-axis motion platform (43) is installed on the rotating surface of the electric rotator (42), and the dual-axis motion platform (43) is connected to the loading platform (4) by transmission.

2. The spring detection device according to claim 1, characterized in that: The end face of the inspection frame (1) is equipped with a display (23). The data terminals of the display (23), the vision probe (22) and the probe (20) are all connected to the PLC controller (2). The PLC controller (2) is fixedly installed on the inspection frame (1). Corrugated guard plates (24) are installed on both sides of the moving frame (6). The other side of the two corrugated guard plates (24) is fixedly connected to the inspection frame (1).

3. The spring detection device according to claim 1, characterized in that: The fluorescent spraying assembly includes a fluorescent reagent tank (44) installed on the inspection frame (1), a spray pipe (45) installed in the spraying chamber (15), a pump body installed on the bottom surface of the fluorescent reagent tank (44), the outlet port of the pump body is connected to the spray pipe (45) through a pipe, a set of regularly distributed spray heads are installed on the bottom surface of the spray pipe (45), and an exhaust fan (46) is installed on the inspection frame (1) and adjacent to the spraying chamber (15).

4. A spring detection device according to claim 1, characterized in that: The center of the loading platform (4) is provided with a transparent glass part (9), and a light source is provided on the loading platform (4) and directly below the transparent glass part (9).

5. A spring detection device according to claim 1, characterized in that: The clamping drive (11) includes a clamping screw rotatably connected to the clamping frame (3). A clamping motor is installed on the side of the clamping frame (3). The output shaft end of the clamping motor is fixedly connected to the clamping screw. A forward thread section and a reverse thread section are symmetrically arranged on the clamping screw. The forward thread section and the reverse thread section are respectively connected to two clamps (10) for transmission. Both clamps (10) are slidably connected to the clamping frame (3).

Images