Automated detection equipment and detection method

Abstract

The present invention discloses an automated testing device and a testing method, which includes a machine body and a protective frame: the protective frame is fixedly mounted above the machine body, the interior of the protective frame is an operating space, and the operating space is provided with a conveying mechanism 1, a conveying mechanism 2, a conveying mechanism 3, three clamping devices, a placement platform, and five testing devices. Through the arrangement of the conveying mechanism 1, the arch height detection device, the appearance detection device 1, the spring height detection device, the appearance detection device 2, the spacing detection device, and the tilting detection device, compared with the prior art, the present device can realize continuous loading and transmission of multiple spring workpieces through the conveying mechanism 1, and transmit the spring workpieces to the five testing devices in turn for testing of various parameters, thereby achieving the purpose of automatically detecting whether the spring workpieces meet the requirements, thereby effectively improving the detection efficiency of the spring workpieces, and improving the practicality and convenience of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of spring detection equipment, and in particular to an automated detection device and a detection method. Background Art

[0002] Springs provide elastic support and cushioning in mechanical equipment. Substandard spring performance can cause equipment malfunctions and even lead to safety accidents. For example, insufficient spring strength in a car's suspension system can easily break, threatening the safety of passengers.

[0003] At present, the detection of various spring parameters mainly relies on manual visual inspection or manual operation of equipment. This process is not only time-consuming, but also has a significant negative impact on production efficiency. It is especially not suitable for the needs of large-scale spring production. In addition, after long-term continuous work, inspectors are prone to visual fatigue, lack of concentration, and emotional fluctuations. These factors increase the possibility of missed detection or misjudgment. Therefore, it is extremely urgent to design an automated detection equipment and corresponding detection method that can automatically detect various spring parameters. Summary of the Invention

[0004] The purpose of the present invention is to provide an automated detection device and detection method, aiming to solve the problem that the detection of various spring parameters in the prior art mainly relies on manual visual inspection or manual operation of equipment. This process is not only time-consuming but also not suitable for large-scale spring production needs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automated inspection device, characterized in that it includes a body and a protective frame: the protective frame is fixedly mounted above the body, the interior of the protective frame is an operating space, and the operating space is equipped with a conveyor mechanism 1, a conveyor mechanism 2, a conveyor mechanism 3, three clamping devices, a placement platform, and five inspection devices; the three clamping devices are respectively a qualified product unloading clamping device, a unqualified product unloading clamping device, and a loading clamping device; the five inspection devices are respectively an arch height detection device, an appearance inspection device 1, a spring height detection device, an appearance inspection device 2, a spacing detection device, and a tilt detection device; the five inspection devices are sequentially mounted on the outer side of the conveyor mechanism 1; a PLC controller is provided on the front surface of one side of the protective frame; a workpiece loading port is provided on the side of the protective frame near the PLC controller; and a conveyor port is provided on the side of the protective frame near the workpiece loading port. The integrated design effectively reduces the turnover process of the spring workpiece, and the use of automated inspection effectively improves the inspection efficiency of the spring workpiece.

[0006] This automated testing equipment, as a preferred embodiment of the present invention, comprises a conveying mechanism comprising a stepper motor mounted in the middle of the bottom wall of the operating space, a rotating shaft mounted at the output end of the stepper motor, a turntable mounted on the outer wall of the rotating shaft, a position limiting tray mounted in a circular array below the turntable, and a transparent plate located on the inner wall of the position limiting tray. This facilitates continuous testing of multiple spring workpieces, improving testing efficiency. Furthermore, the use of a turntable-type conveying method effectively reduces the conveying device's footprint and improves space utilization compared to a conveyor belt-based conveying method.

[0007] This kind of automated inspection equipment, as a preferred embodiment of the present invention, the conveying mechanism 2 includes a frame fixed on one side of the bottom wall of the operating space, a second shaft and a third shaft symmetrically connected to the inner wall of the frame, a conveyor belt rotatably connected to the outer wall of the second shaft and the third shaft, a stepper motor 2 fixed on one side of the frame, a fourth shaft fixed at the output end of the second stepper motor, and a synchronous belt rotatably connected to the outer wall of the fourth shaft, the synchronous belt being installed on the outer wall of the fourth shaft and the second shaft, the working principle and structure of the conveying mechanism 3 are consistent with those of the conveying mechanism 2, and the structure of the conveying mechanism 3 is different from that of the conveying mechanism 2 in that the width of the conveyor belt of the conveying mechanism 3 is wider than that of the conveyor belt of the conveying mechanism 2. The conveying mechanism 2 and the conveying mechanism 3 can respectively convey spring workpieces that pass the inspection and spring workpieces that fail the inspection, thereby realizing automatic sorting and unloading, which is convenient to use.

[0008] This automated inspection equipment, as a preferred embodiment of the present invention, comprises a loading and clamping device located directly above the placement platform, a qualified product unloading and clamping device located on one side of the second conveyor mechanism, and a unqualified product unloading and clamping device located between the second conveyor mechanism and the third conveyor mechanism. The loading and clamping device, the qualified product unloading and clamping device, and the unqualified product unloading and clamping device are all truss manipulator bodies. The truss manipulator body is used to clamp and load or unload materials, and the height and position of the clamping can be adjusted, effectively improving the ease of use of the equipment.

[0009] This automated testing equipment, as a preferred embodiment of the present invention, comprises a dome height detection device comprising an electric guide rail, a lifting cylinder slidably connected above the electric guide rail, a fixing bracket disposed at the output end of the lifting cylinder, and a dial indicator body mounted on one side of the fixing bracket. The dial indicator bodies are four in number and are symmetrically arranged in pairs. The dome height detection device facilitates detection of the dome heights of the inner and outer limbs of a spring workpiece.

[0010] This automated inspection equipment, as a preferred embodiment of the present invention, comprises a first appearance inspection device comprising a second electric guide rail, a third electric guide rail slidably connected to the second electric guide rail, and a fill light panel and a first visual inspection camera slidably connected to the third electric guide rail. The structure and operating principle of the second appearance inspection device are consistent with those of the first appearance inspection device. The second appearance inspection device is located to the right of the first appearance inspection device and is mounted within the body. The first and second appearance inspection devices facilitate inspection of the top and bottom surfaces of the spring workpiece.

[0011] This automated inspection equipment, as a preferred embodiment of the present invention, comprises a spring height detection device comprising a detection assembly 1 and a pressing assembly 1. The pressing assembly 1 comprises a support frame 1 fixed to the bottom wall of the operating space, a backlight panel mounted at one end of the support frame 1, a lifting cylinder 2 mounted on one side of the support frame 1, and a spring pressing block 1 disposed below the lifting cylinder 2. The detection assembly 1 comprises a motorized guide rail 4, a motorized guide rail 5 slidably connected to the motorized guide rail 4, and a visual inspection camera 2 slidably connected to the motorized guide rail 5. The spring height detection device facilitates detection of the spring height of the spring workpiece.

[0012] This automated testing device, as a preferred embodiment of the present invention, has a spacing detection device whose structure and operating principle are consistent with those of the spring height detection device. The spacing detection device differs from the spring height detection device in that the pressing assembly of the spacing detection device is not provided with a backlight. The spacing detection device facilitates the detection of the straight section, the spacing between the two limbs, and the buckling limb of the spring workpiece.

[0013] This kind of automated detection equipment, as a preferred embodiment of the present invention, comprises a tilting detection device including a second detection component and a second pressing component. The second detection component is composed of two symmetrically arranged first detection components. The second pressing component is composed of a second support frame fixed to the bottom wall of the operating space, a third lifting cylinder installed above the second support frame, a second spring pressing block installed at the output end of the third lifting cylinder, a fourth lifting cylinder installed on one side of the second support frame, and a third spring pressing block symmetrically arranged at the output end of the fourth lifting cylinder. The tilting detection device facilitates the detection of the tilting parameters of the spring workpiece.

[0014] A detection method specifically comprises the following steps:

[0015] S1. The equipment is powered by an external power supply, and the PLC controller sets the program to control the operation of the equipment. The staff places the spring workpiece to be tested on the placement platform. After the loading and clamping device detects the loading of the spring workpiece, the spring workpiece is loaded onto the limit tray, and the limit tray is driven by the conveying mechanism for conveying;

[0016] S2. The stepper motor is driven to start by the PLC controller. The stepper motor drives the turntable to rotate in a circle through the rotating shaft. The turntable rotates in a circle and drives the multiple limit trays to rotate. When the spring workpiece is transferred to the arch height detection device and detected by it, the arch height detection device moves the dial indicator body to the spring workpiece through the electric guide rail and the lifting cylinder. The four dial indicator bodies are respectively in contact with the outer two limbs and the inner two limbs of the spring workpiece. The arch height of the spring workpiece is detected by the dial indicator body.

[0017] S3. After the arch height test is completed, the conveying mechanism 1 continues to drive the spring workpiece to be conveyed. The spring workpiece is conveyed to the appearance inspection device 1 and is inspected by the visual inspection camera 1 to see if the appearance of its upper surface is qualified. The fill light board can increase the illumination so as to clearly capture the appearance of the upper surface of the spring workpiece for inspection.

[0018] S4. After the upper surface shape inspection is completed, the conveying mechanism 1 continues to drive the spring workpiece to the spring height detection device for inspection. The height and position of the visual inspection camera 2 can be adjusted by the electric guide rails 4 and 5, so that it can completely capture the entire spring workpiece. The lifting cylinder 2 is started to drive the spring pressing block 1 to abut against the upper end of the spring workpiece, which can apply a certain pressure to the spring workpiece, thereby making the inspection result more accurate. The function of the backlight panel is to prevent the visual inspection camera from capturing some devices behind it to avoid interference with the inspection result.

[0019] S5. After the spring stroke test is completed, the conveying mechanism 1 continues to drive the spring workpiece to be conveyed. The spring workpiece is conveyed to the appearance inspection device 2 and is inspected by the visual inspection camera 1 to see if the appearance of its lower surface is qualified. The fill light board can improve the illumination so as to clearly capture the appearance of the lower surface of the spring workpiece for inspection.

[0020] S6. After the lower surface shape inspection is completed, the conveying mechanism 1 continues to drive the spring workpiece to be conveyed. When the spring workpiece is conveyed to the spacing detection device, the straight section, the spacing between the two limbs and the buckling limb are inspected. The inspection principle is the same as the spring stroke inspection principle. The straight section, the spacing between the two limbs and the buckling limb of the spring workpiece are inspected by pressing down the tail of the spring and cooperating with visual inspection.

[0021] S7. After the spacing detection is completed, the conveying mechanism 1 continues to drive the spring workpiece to be conveyed, and the spring workpiece is conveyed to the tilting detection device for detection. The detection principle is also through visual detection combined with downward pressure. The spring pressing block 2 presses down the tail of the spring workpiece, and the two spring pressing blocks 3 press down the front of the spring workpiece. The two limbs of the spring workpiece are tested for tilting by the detection component 2.

[0022] S8. After the tilting test is completed, the conveying mechanism 1 continues to drive the spring workpiece for conveying. When the spring workpiece is conveyed to the qualified product unloading and clamping device, the spring workpiece that has passed the arch height test, upper surface shape test, spring stroke test, lower surface shape test, spacing test and tilting test is conveyed by the qualified product unloading and clamping device to the conveying mechanism 2 for conveying and unloading. The spring workpiece that has not passed all the tests continues to be conveyed by the conveying mechanism 1. The spring workpiece that has failed the test is clamped by the unqualified product unloading and clamping device and placed on the conveying mechanism 3 for conveying and unloading, thereby completing the test of various parameters of the spring workpiece and realizing continuous testing.

[0023] The above scheme has the following beneficial effects:

[0024] 1. Compared with the prior art, this device can realize continuous loading and transmission of multiple spring workpieces through the arrangement of the first conveying mechanism, the first arch height detection device, the first appearance detection device, the spring height detection device, the second appearance detection device, the spacing detection device and the warping detection device. The spring workpieces are sequentially transmitted to the five detection devices for detection of various parameters, thereby achieving the purpose of automatically detecting whether the spring workpieces meet the requirements, thereby effectively improving the detection efficiency of the spring workpieces and improving the practicality and convenience of the equipment.

[0025] 2. The present invention integrates conveying mechanism 1, conveying mechanism 2, conveying mechanism 3, three clamping devices and five detection devices to realize the one-stop detection requirements of spring workpieces, and adopts a turntable type to realize the transfer and transportation of spring workpieces between various processes. Compared with the traditional method of using a long conveyor belt to transport the turnover or manually transferring the spring workpieces for inspection, it not only reduces the labor intensity of manual labor, but also saves turnover time, thereby greatly improving work efficiency.

[0026] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0028] Figure 1 This is a schematic diagram of the overall structure of an automated detection device and detection method of the present invention;

[0029] Figure 2 This is a schematic structural diagram of an overall front view of an automated detection device and a detection method of the present invention;

[0030] Figure 3 This is a schematic diagram of the overall top view of an automated detection device and detection method of the present invention;

[0031] Figure 4 This is a structural schematic diagram of a second transmission mechanism of an automated detection device and detection method of the present invention;

[0032] Figure 5 A schematic structural diagram of a turntable of an automated detection device and detection method of the present invention;

[0033] Figure 6 This is a structural schematic diagram of a projectile height detection device of an automated detection device and detection method of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a tilting detection device of an automated detection device and detection method of the present invention;

[0035] Figure 8 The present invention provides a flow chart of an automated detection device and a detection method.

[0036] Legend:

[0037] 1. Machine body; 2. Protective frame; 3. Operating space; 4. Conveyor mechanism 1; 41. Stepper motor 1; 42. Rotating shaft 1; 43. Turntable; 44. Positioning tray; 45. Transparent plate; 5. Conveyor mechanism 2; 51. Frame; 52. Rotating shaft 2; 53. Rotating shaft 3; 54. Conveyor belt; 55. Stepper motor 2; 56. Rotating shaft 4; 57. Synchronous belt; 6. Conveyor mechanism 3; 7. Placing platform; 8. Unloading and clamping device for qualified products; 9. Unloading and clamping device for unqualified products; 10. Loading and clamping device; 11. Arch height detection device; 111. Electric guide rail 1; 112. Lifting cylinder 1; 113. Fixed frame; 114. Micrometer body; 12. Appearance detection device 1; 121. Electric guide rail 2; 122. Electric guide rail 3; 123. Fill light 1. Visual inspection camera 1; 124. Visual inspection camera 1; 13. Spring height detection device; 131. Inspection component 1; 1311. Electric guide rail 4; 1312. Electric guide rail 5; 1313. Visual inspection camera 2; 132. Pressing component 1; 1321. Support frame 1; 1322. Backlight panel; 1323. Lifting cylinder 2; 1324. Spring pressing block 1; 14. Appearance inspection device 2; 15. Spacing detection device; 16. Warping detection device; 161. Inspection component 2; 162. Pressing component 2; 1621. Support frame 2; 1622. Lifting cylinder 3; 1623. Spring pressing block 2; 1624. Lifting cylinder 4; 1625. Spring pressing block 3; 17. PLC controller; 18. Workpiece loading port; 19. Conveying port. DETAILED DESCRIPTION

[0038] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0039] Reference Figures 1-8The present invention provides the following technical solutions: an automated inspection device, comprising a machine body 1 and a protective frame 2: the protective frame 2 is fixedly mounted above the machine body 1, the interior of the protective frame 2 is an operating space 3, the operating space 3 is provided with a conveying mechanism 1 4, a conveying mechanism 2 5, a conveying mechanism 3 6, three clamping devices, a placement platform 7 and five inspection devices, the three clamping devices are respectively a qualified product unloading clamping device 8, an unqualified product unloading clamping device 9 and a loading clamping device 10, the five inspection devices are respectively an arch height inspection device 11, an appearance inspection device 1 12, a spring height inspection device 13, an appearance inspection device 2 14, a spacing inspection device 15 and a tilting inspection device 16, the five inspection devices are sequentially installed on the outside of the conveying mechanism 1 4, a PLC controller 17 is provided on the front surface of one side of the protective frame 2, a workpiece loading port 18 is provided on the side of the protective frame 2 close to the PLC controller 17, and a conveying port 19 is provided on the side of the protective frame 2 close to the workpiece loading port 18.

[0040] In this embodiment, with the cooperation of conveying mechanism 1 4, conveying mechanism 2 5, conveying mechanism 3 6, qualified product blanking and clamping device 8, unqualified product blanking and clamping device 9, loading and clamping device 10, arch height detection device 11, appearance detection device 12, spring height detection device 13, appearance detection device 2 14, spacing detection device 15 and warping detection device 16, automatic detection and classified blanking operations of spring workpieces can be realized, and multiple detection devices are integrated, which effectively reduces the footprint of the equipment and improves the practicality and convenience of the device.

[0041] Specifically, the conveying mechanism 4 includes a stepper motor 41 fixed in the middle of the bottom wall of the operating space 3, a rotating shaft 42 fixed at the output end of the stepper motor 41, a turntable 43 fixed on the outer wall of the rotating shaft 42, a limiting tray 44 installed in a circular array below the turntable 43, and a transparent plate 45 located on the inner wall of the limiting tray 44.

[0042] In this embodiment, the conveying mechanism 14 is communicatively connected to a PLC controller 17 (Programmable Logic Controller). The PLC controller 17 can control the start and stop of the conveying mechanism 14. The PLC controller 17 drives the stepper motor 141 to start. The start of the stepper motor 141 drives the rotating shaft 142 to rotate. The rotation of the rotating shaft 142 drives the turntable 43 to rotate. The rotation of the turntable 43 drives the multiple limit trays 44 to rotate, thereby achieving the purpose of conveying the spring workpiece placed on the limit tray 44 and realizing the automatic conveyance of the spring workpiece. The purpose of providing the transparent plate 45 is to enable the detection head to photograph and detect the spring workpiece during visual inspection.

[0043] Specifically, the transmission mechanism 2 5 includes a frame 51 fixed on one side of the bottom wall of the operating space 3, a rotating shaft 2 52 and a rotating shaft 3 53 symmetrically connected to the inner wall of the frame 51, a conveyor belt 54 rotatably connected to the outer wall of the rotating shaft 2 52 and the rotating shaft 3 53, a stepper motor 2 55 fixed on one side of the frame 51, a rotating shaft 4 56 fixed at the output end of the stepper motor 2 55, and a synchronous belt 57 rotatably connected to the outer wall of the rotating shaft 4 56. The synchronous belt 57 is installed on the outer wall of the rotating shaft 4 56 and the rotating shaft 2 52. The working principle and structure of the transmission mechanism 3 6 are consistent with the working principle and structure of the transmission mechanism 2 5. The structure of the transmission mechanism 3 6 is different from that of the transmission mechanism 2 5 in that the width of the conveyor belt 54 of the transmission mechanism 3 6 is wider than the width of the conveyor belt 54 of the transmission mechanism 2 5.

[0044] In this embodiment, the second conveying mechanism 5 and the third conveying mechanism 6 are both communicatively connected to the PLC controller 17 (Programmable Logic Controller). The PLC controller 17 can control the start and stop of the second conveying mechanism 5 and the third conveying mechanism 6. The PLC controller 17 drives the second stepper motor 55 to start, and the second stepper motor 55 drives the fourth rotating shaft 56 to rotate. The rotation of the fourth rotating shaft 56 drives the second rotating shaft 52 to rotate through the synchronous belt 57. The rotation of the second rotating shaft 52 drives the conveyor belt 54 to rotate, and at the same time drives the third rotating shaft 53 to rotate through the conveyor belt 54. Therefore, the second conveying mechanism 5 and the third conveying mechanism 6 can distinguish and unload qualified spring workpieces from unqualified spring workpieces, which is convenient to use and easy to classify.

[0045] Specifically, the loading and clamping device 10 is located directly above the placement platform 7, the qualified product unloading and clamping device 8 is located on one side of the conveying mechanism 2 5, and the unqualified product unloading and clamping device 9 is located between the conveying mechanism 2 5 and the conveying mechanism 3 6. The loading and clamping device 10, the qualified product unloading and clamping device 8 and the unqualified product unloading and clamping device 9 are all truss manipulator bodies.

[0046] In this embodiment, the loading and clamping device 10 can clamp and load the spring workpiece to be inspected on the placement platform 7 onto the limit tray 44 for transportation. The qualified product unloading and clamping device 8 can clamp and unload all the spring workpieces that have passed the inspection onto the conveyor belt 54 of the conveying mechanism 2 5 for unloading. The unqualified product unloading and clamping device 9 can clamp and unload all the spring workpieces that have not passed the inspection onto the conveyor belt 54 of the conveying mechanism 3 6 for unloading. The loading and clamping device 10, the qualified product unloading and clamping device 8 and the unqualified product unloading and clamping device 9 are all truss manipulator bodies. The truss manipulator body can adjust the clamping height and position, and is easy to use.

[0047] Specifically, the arch height detection device 11 includes an electric guide rail 111, a lifting cylinder 112 slidingly connected above the electric guide rail 111, a fixing frame 113 arranged at the output end of the lifting cylinder 112, and a micrometer body 114 installed on one side of the fixing frame 113. There are four micrometer bodies 114, and the four micrometer bodies 114 are symmetrically arranged in pairs.

[0048] In this embodiment, the arch height detection device 11 can detect whether the height of the inner two limbs and the height of the outer two limbs of the spring workpiece meet the requirements, and the electric guide rail 111 and the lifting cylinder 112 can adjust the position and height of the four micrometer bodies 114 so that they can abut against the height of the inner two limbs and the outer two limbs of the spring workpiece. It is easy to use and the detection is accurate.

[0049] Specifically, the appearance detection device 12 includes an electric guide rail 2 121, an electric guide rail 3 122 slidably connected to the electric guide rail 2 121, and a fill light plate 123 and a visual detection camera 124 slidably connected to the electric guide rail 3 122. The structure and working principle of the appearance detection device 2 14 are consistent with the structure and working principle of the appearance detection device 12. The appearance detection device 2 14 is located on the right side of the appearance detection device 12, and the appearance detection device 2 14 is installed in the body 1.

[0050] In this embodiment, the appearance inspection device 12 can be used to detect whether the upper surface shape of the spring workpiece meets the requirements, the electric guide rail 2 121 and the electric guide rail 3 122 can be used to adjust the height and position of the fill light plate 123 and the visual inspection camera 1 124, the visual inspection camera 124 is used to photograph and detect the upper surface shape of the spring workpiece, and the appearance inspection device 2 14 can detect whether the lower surface shape of the spring workpiece meets the requirements. The visual inspection method is more convenient.

[0051] Specifically, the range height detection device 13 includes a detection component 131 and a pressing component 132. The pressing component 132 consists of a support frame 1321 fixed on the bottom wall of the operating space 3, a backlight panel 1322 installed at one end of the support frame 1321, a lifting cylinder 1323 installed on one side of the support frame 1321, and a spring pressing block 1324 arranged below the lifting cylinder 1323. The detection component 131 consists of an electric guide rail 4 1311, an electric guide rail 5 1312 slidably connected to the electric guide rail 4 1311, and a visual detection camera 2 1313 slidably connected to the electric guide rail 5 1312.

[0052] In this embodiment, the spring stroke height detection device 13 can detect whether the spring stroke height of the spring workpiece meets the requirements. The detection principle is also to shoot and detect through vision. The purpose of setting the backlight panel 1322 is to prevent the visual detection camera 2 1313 from shooting other detection devices and interfering with the accuracy of the detection.

[0053] Specifically, the structure and working principle of the spacing detection device 15 are consistent with the structure and working principle of the spring range height detection device 13. The structure of the spacing detection device 15 is different from that of the spring range height detection device 13 in that the downward pressing component 132 of the spacing detection device 15 is not provided with a backlight panel 1322.

[0054] In this embodiment, the spacing detection device 15 can detect whether the straight section, the spacing between the two limbs and the buckling limb of the spring workpiece meet the requirements. The detection principle is also to shoot and detect through vision.

[0055] Specifically, the tilting detection device 16 includes a detection component 2 161 and a downward pressure component 2 162. The detection component 2 161 is composed of two symmetrically arranged detection components 1 131. The downward pressure component 2 162 is composed of a support frame 2 1621 fixed on the bottom wall of the operating space 3, a lifting cylinder 3 1622 installed above the support frame 2 1621, a spring downward pressure block 2 1623 arranged at the output end of the lifting cylinder 3 1622, a lifting cylinder 4 1624 installed on one side of the support frame 2 1621, and a spring downward pressure block 3 1625 symmetrically arranged at the output end of the lifting cylinder 4 1624.

[0056] In this embodiment, the tilting detection device 16 can detect whether the tilting height of the spring workpiece meets the requirements, and the lifting cylinder three 1622 and the lifting cylinder four 1624 can drive the spring pressing block two 1623 and the two spring pressing blocks three 1625 to descend and abut against the tail end and the front end of the spring workpiece, and apply pressure to the spring workpiece and cooperate with visual detection to perform precise detection, which effectively improves the convenience of detection.

[0057] A detection method specifically comprises the following steps:

[0058] S1. The equipment is powered by an external power supply, and the PLC controller 17 sets a program to control the operation of the equipment. The staff places the spring workpiece to be tested on the placement platform 7. After the loading and clamping device 10 detects the loading of the spring workpiece, the spring workpiece is loaded onto the limit tray 44, and the limit tray 44 is driven by the conveying mechanism 4 for conveying;

[0059] S2. The stepper motor 41 is driven to start by the PLC controller 17. The stepper motor 41 drives the turntable 43 to rotate in a circle via the rotating shaft 42. The rotation of the turntable 43 drives the multiple limit trays 44 to rotate. When the spring workpiece is transferred to the arch height detection device 11 and detected by it, the arch height detection device 11 moves the dial indicator body 114 to the spring workpiece via the electric guide rail 111 and the lifting cylinder 112. The four dial indicator bodies 114 respectively abut against the surfaces of the outer two limbs and the inner two limbs of the spring workpiece, and the dial indicator bodies 114 detect whether the arch height of the spring workpiece is qualified or not;

[0060] S3. After the arch height test is completed, the conveying mechanism 4 continues to drive the spring workpiece to be conveyed. The spring workpiece is conveyed to the appearance inspection device 12 and is inspected by the visual inspection camera 124 to determine whether the appearance of the upper surface of the spring workpiece is qualified. The fill light plate 123 can increase the illumination so as to clearly capture the appearance of the upper surface of the spring workpiece.

[0061] S4. After the upper surface shape inspection is completed, the conveying mechanism 14 continues to drive the spring workpiece to be conveyed to the spring height detection device 13 for inspection. The height and position of the visual inspection camera 2 1313 can be adjusted by the electric guide rail 4 1311 and the electric guide rail 5 1312 so that it can completely capture the entire spring workpiece. The lifting cylinder 2 1323 is started to drive the spring pressing block 1 1324 to abut against the upper end of the spring workpiece, which can apply a certain pressure to the spring workpiece, thereby making the inspection result more accurate. The function of the backlight plate 1322 is to prevent the visual inspection camera from capturing some devices behind it to avoid interference with the inspection result.

[0062] S5. After the spring stroke test is completed, the conveying mechanism 1 4 continues to drive the spring workpiece to be conveyed. The spring workpiece is conveyed to the appearance inspection device 2 14 and is inspected by the visual inspection camera 1 124 to determine whether the appearance of the lower surface of the spring workpiece is qualified. The fill light plate 123 can increase the illumination so as to clearly capture the appearance of the lower surface of the spring workpiece for inspection.

[0063] S6. After the lower surface shape inspection is completed, the conveying mechanism 4 continues to drive the spring workpiece to be conveyed. When the spring workpiece is conveyed to the spacing detection device 15, the straight section, the spacing between the two limbs and the buckling limb are inspected. The inspection principle is the same as the spring stroke inspection principle. The straight section, the spacing between the two limbs and the buckling limb of the spring workpiece are inspected by pressing down the tail of the spring and cooperating with visual inspection.

[0064] S7. After the spacing detection is completed, the conveying mechanism 1 4 continues to drive the spring workpiece to be conveyed, and the spring workpiece is conveyed to the tilting detection device 16 for detection. The detection principle is also through visual detection combined with downward pressure. The spring pressing block 2 1623 presses down the tail of the spring workpiece, and the two spring pressing blocks 3 1625 press down the front of the spring workpiece. The two limbs of the spring workpiece are tested for tilting by the detection component 2 161.

[0065] S8. After the tilting test is completed, the conveying mechanism 1 4 continues to drive the spring workpiece for conveying. When the spring workpiece is conveyed to the qualified product unloading and clamping device 8, the spring workpiece that has passed the arch height test, the upper surface shape test, the spring stroke test, the lower surface shape test, the spacing test and the tilting test is conveyed by the qualified product unloading and clamping device 8 to the conveying mechanism 2 5 for conveying and unloading. The spring workpiece that has not passed all the tests continues to be conveyed by the conveying mechanism 1 4. The unqualified spring workpiece is clamped by the unqualified product unloading and clamping device 9 and placed on the conveying mechanism 3 6 for conveying and unloading, thereby completing the detection of various parameters of the spring workpiece and realizing continuous detection.

[0066] The working principle and use process of the present invention are as follows: the staff places the spring workpiece to be tested on the placement platform 7 through the workpiece loading port 18, the loading and clamping device 10 detects the spring workpiece on the placement platform 7 and clamps it and transfers it to the limit tray 44 of the conveying mechanism 14 (the limit tray 44 is provided with four limit blocks, so that the spring workpiece will not fall from the limit tray 44 when being conveyed by the conveying mechanism 14), and the spring workpiece is conveyed by the conveying mechanism 14. The spring workpiece is first conveyed to the arch height detection device 11 for arch height detection, and the detection results are synchronously recorded in the PLC controller 17 (Programmable Logic Controller). Controller, programmable logic controller), after the arch height detection is completed, the spring workpiece is continuously conveyed through the conveying mechanism 14 and is conveyed to the appearance detection device 12 for upper surface appearance detection. After the detection is completed, the spring workpiece is continuously conveyed and is conveyed to the spring range height detection device 13 for spring range height detection. After the spring range height detection is completed, the spring workpiece is continuously conveyed and is conveyed to the appearance detection device 14 for lower surface appearance detection. After the lower surface appearance detection is completed, the spring workpiece is continuously conveyed to the spacing detection device 15 for straight section, two-limb spacing and buckled limb detection. After that, the spring workpiece is continuously conveyed through the conveying mechanism 4 to the tilting detection device 16 for tilting detection. The detection results of all spring workpieces are recorded in the PLC controller 17. When the spring workpiece is conveyed to the qualified product blanking and clamping device 8, all the inspections are qualified (arch height detection, upper surface appearance detection, spring range height detection, lower surface appearance detection) under the drive of the PLC controller 17. The spring workpieces that have passed all the tests, namely the shape detection, spacing detection and warping detection, are qualified) are clamped and unloaded by the qualified product unloading clamping device 8 to the conveying mechanism 2 5 for conveying and unloading, while the spring workpieces that have not passed all the tests will be conveyed to the unqualified product clamping and unloading device 9 through the conveying mechanism 1 4. Under the drive of the PLC controller 17, the unqualified product clamping and unloading device 9 will clamp and unload the spring workpieces that have failed the inspection (the spring workpieces that do not meet the requirements in any of the arch height inspection, upper surface shape inspection, spring stroke height inspection, lower surface shape inspection, spacing inspection and warping inspection are unqualified) to the conveying mechanism 3 6 for conveying and unloading, thereby realizing the automatic inspection of various parameters of the spring workpieces and the automatic sorting of qualified and unqualified spring workpieces, thereby effectively improving the inspection efficiency. The integrated design effectively reduces the footprint of the equipment, reduces the turnover process of the spring workpieces, and improves the practicality and convenience of the equipment.

[0067] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. An automated testing device, characterized in that: The invention comprises a machine body (1) and a protective frame (2): the protective frame (2) is fixedly mounted above the machine body (1); the interior of the protective frame (2) is an operating space (3); the operating space (3) is provided with a first conveying mechanism (4), a second conveying mechanism (5), a third conveying mechanism (6), three clamping devices, a placement platform (7) and five detection devices; The three clamping devices are respectively a qualified product unloading clamping device (8), an unqualified product unloading clamping device (9) and a loading clamping device (10); the five detection devices are respectively an arch height detection device (11), an appearance detection device 1 (12), a spring height detection device (13), an appearance detection device 2 (14), a spacing detection device (15) and a tilting detection device (16); the five detection devices are sequentially installed on the outside of the conveying mechanism 1 (4); a PLC controller (17) is provided on the front surface of one side of the protective frame (2); a workpiece loading port (18) is provided on the side of the protective frame (2) close to the PLC controller (17); and a conveying port (19) is provided on the side of the protective frame (2) close to the workpiece loading port (18); The arch height detection device (11) includes an electric guide rail (111), a lifting cylinder (112) slidably connected above the electric guide rail (111), a fixing frame (113) arranged at the output end of the lifting cylinder (112), and a dial gauge body (114) installed on one side of the fixing frame (113), wherein the number of the dial gauge bodies (114) is four, and the four dial gauge bodies (114) are symmetrically arranged in pairs. The appearance detection device 1 (12) includes an electric guide rail 2 (121), an electric guide rail 3 (122) slidably connected to the electric guide rail 2 (121), and a fill light plate (123) and a visual detection camera 1 (124) slidably connected to the electric guide rail 3 (122). The structure and working principle of the appearance detection device 2 (14) are consistent with the structure and working principle of the appearance detection device 1 (12). The appearance detection device 2 (14) is located on the right side of the appearance detection device 1 (12). The appearance detection device 2 (14) is installed in the body (1); The spring height detection device (13) includes a detection component (131) and a pressing component (132), wherein the pressing component (132) is composed of a support frame (1321) fixed on the inner bottom wall of the operation space (3), a backlight panel (1322) installed at one end of the support frame (1321), a lifting cylinder (1323) installed on one side of the support frame (1321), and a spring pressing block (1324) arranged below the lifting cylinder (1323). The detection component (131) is composed of an electric guide rail (1311), an electric guide rail (1312) slidably connected to the electric guide rail (1311), and a visual detection camera (1313) slidably connected to the electric guide rail (1312). The structure and working principle of the spacing detection device (15) are consistent with the structure and working principle of the spring range height detection device (13). The spacing detection device (15) is different from the spring range height detection device (13) in that the downward pressing component (132) of the spacing detection device (15) is not provided with a backlight plate (1322); The tilting detection device (16) includes a detection component 2 (161) and a pressing component 2 (162), wherein the detection component 2 (161) is composed of two symmetrically arranged detection components 1 (131), and the pressing component 2 (162) is composed of a support frame 2 (1621) fixed on the inner bottom wall of the operating space (3), a lifting cylinder 3 (1622) installed above the support frame 2 (1621), a spring pressing block 2 (1623) arranged at the output end of the lifting cylinder 3 (1622), a lifting cylinder 4 (1624) installed on one side of the support frame 2 (1621), and a spring pressing block 3 (1625) symmetrically arranged at the output end of the lifting cylinder 4 (1624).

2. The automated testing equipment according to claim 1, characterized in that: The conveying mechanism (4) comprises a stepping motor (41) fixedly mounted in the middle of the inner bottom wall of the operating space (3), a rotating shaft (42) fixedly mounted at the output end of the stepping motor (41), a turntable (43) fixedly mounted on the outer wall of the rotating shaft (42), a limiting tray (44) mounted in a circular array below the turntable (43), and a transparent plate (45) located on the inner wall of the limiting tray (44).

3. The automated testing equipment according to claim 2, characterized in that: The second transmission mechanism (5) includes a frame (51) fixed on one side of the inner bottom wall of the operating space (3), a second rotating shaft (52) and a third rotating shaft (53) symmetrically connected to the inner wall of the frame (51), a conveyor belt (54) rotatably connected to the outer wall of the second rotating shaft (52) and the third rotating shaft (53), a second stepper motor (55) fixed on one side of the frame (51), a fourth rotating shaft (56) fixed on the output end of the second stepper motor (55), a second rotating shaft (57) rotatably connected to the outer wall of the fourth rotating shaft (57), and a second rotating shaft (58) rotatably connected to the outer wall of the third rotating shaft (58). 56) is a synchronous belt (57) on the outer wall of the rotating shaft (56), and the synchronous belt (57) is installed on the outer wall of the rotating shaft (56) and the rotating shaft (52). The working principle and structure of the transmission mechanism (3) (6) are consistent with the working principle and structure of the transmission mechanism (5). The structure of the transmission mechanism (3) (6) is different from that of the transmission mechanism (5) in that the width of the transmission belt (54) of the transmission mechanism (3) (6) is wider than the width of the transmission belt (54) of the transmission mechanism (5).

4. The automated testing equipment according to claim 3, characterized in that: The loading and clamping device (10) is located directly above the placement platform (7), the qualified product unloading and clamping device (8) is located on one side of the second conveying mechanism (5), and the unqualified product unloading and clamping device (9) is located between the second conveying mechanism (5) and the third conveying mechanism (6). The loading and clamping device (10), the qualified product unloading and clamping device (8) and the unqualified product unloading and clamping device (9) are all truss manipulator bodies.

5. A detection method, using the automated detection equipment according to claim 4, comprising the following steps: S1. The equipment is powered by an external power supply, and the PLC controller (17) sets a program to control the operation of the equipment. The staff places the spring workpiece to be tested on the placement platform (7). After the loading and clamping device (10) detects the loading of the spring workpiece, the spring workpiece is loaded onto the limit tray (44), and the limit tray (44) is driven by the conveying mechanism (4) for conveying; S2, the stepper motor 1 (41) is driven to start by the PLC controller (17), the stepper motor 1 (41) drives the turntable (43) to rotate in a circle through the rotating shaft 1 (42), and the turntable (43) rotates in a circle to drive the plurality of limit trays (44) to rotate. When the spring workpiece is transferred to the arch height detection device (11) and detected by it, the arch height detection device (11) moves the dial gauge body (114) to the spring workpiece through the electric guide rail 1 (111) and the lifting cylinder 1 (112). The four dial gauge bodies (114) are respectively in contact with the outer two limbs and the inner two limbs of the spring workpiece, and the arch height of the spring workpiece is detected by the dial gauge body (114). S3. After the arch height detection is completed, the conveying mechanism 1 (4) continues to drive the spring workpiece to be conveyed, and the spring workpiece is conveyed to the appearance detection device 1 (12) and is inspected by the visual inspection camera 1 (124) to determine whether the appearance of the upper surface is qualified. The fill light plate (123) can improve the illumination, so as to clearly capture the appearance of the upper surface of the spring workpiece; S4. After the upper surface shape inspection is completed, the conveying mechanism 1 (4) continues to drive the spring workpiece to be transported to the spring height detection device (13) for inspection. The height and position of the visual inspection camera 2 (1313) can be adjusted by the electric guide rail 4 (1311) and the electric guide rail 5 (1312) so that it can completely capture the entire spring workpiece. The lifting cylinder 2 (1323) is started to drive the spring pressing block 1 (1324) to abut against the upper end of the spring workpiece, which can apply a certain pressure to the spring workpiece, thereby making the inspection result more accurate. The function of the backlight plate (1322) is to prevent the visual inspection camera from capturing some devices behind it, thereby avoiding interference with the inspection result. S5. After the spring stroke test is completed, the conveying mechanism 1 (4) continues to drive the spring workpiece to be conveyed, and the spring workpiece is conveyed to the appearance inspection device 2 (14) and inspected by the visual inspection camera 1 (124) to see if the appearance of the lower surface is qualified. The fill light plate (123) can improve the illumination, so as to clearly capture the appearance of the lower surface of the spring workpiece; S6. After the lower surface shape inspection is completed, the conveying mechanism 1 (4) continues to drive the spring workpiece to be transported. When the spring workpiece is transported to the spacing inspection device (15), the straight section, the spacing between the two limbs and the buckled limb are inspected. The inspection principle is the same as the spring stroke inspection principle. The straight section, the spacing between the two limbs and the buckled limb of the spring workpiece are inspected by pressing down the tail of the spring and cooperating with visual inspection. S7. After the spacing detection is completed, the conveying mechanism 1 (4) continues to drive the spring workpiece to be conveyed, and the spring workpiece is conveyed to the tilting detection device (16) for detection. The detection principle is also through visual detection combined with downward pressure. The spring pressing block 2 (1623) presses down the tail of the spring workpiece, and the two spring pressing blocks 3 (1625) press down the front of the spring workpiece. The two limbs of the spring workpiece are tested for tilting through the detection component 2 (161); S8. After the tilting test is completed, the conveying mechanism 1 (4) continues to drive the spring workpiece for conveying. When the spring workpiece is conveyed to the qualified product unloading and clamping device (8), the spring workpiece that has passed the arch height test, upper surface shape test, spring stroke test, lower surface shape test, spacing test and tilting test is conveyed by the qualified product unloading and clamping device (8) to the conveying mechanism 2 (5) for unloading. The spring workpiece that has not passed the test continues to be conveyed by the conveying mechanism 1 (4). The unqualified spring workpiece is clamped by the unqualified product unloading and clamping device (9) and placed on the conveying mechanism 3 (6) for unloading, thereby completing the detection of various parameters of the spring workpiece and realizing continuous detection.

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