Automobile rearview mirror multi-dimension test method and device

Abstract

The application relates to a multi-dimensional testing method and device for an automobile rearview mirror, and relates to the technical field of rearview mirror detection. The device comprises the following steps: in response to a rearview mirror detection signal, a rearview mirror falling position number is acquired; a lens detection scheme is determined based on the rearview mirror falling position number, and a detection mechanism is controlled to perform a detection pressing-down operation according to the lens detection scheme; a pressing-down pressure is collected in real time during the detection pressing-down operation; when the pressing-down pressure reaches a preset effective pressure threshold value, a current pressing-down depth is determined; if the current pressing-down depth is a preset reference pressing-down depth, a lens assembly angle detection operation is performed to determine a lens angle detection result; when the lens angle detection result is a qualified angle result, a lifting gap detection operation is performed; a lifting distance is acquired in real time during the lifting gap detection operation; and when the lifting distance is 0, a rearview mirror assembly qualified signal is output. The application has the effects of improving the detection accuracy of the rearview mirror and reducing the missed detection rate.

Description

Technical Field

[0001] This invention relates to the field of rearview mirror testing technology, and in particular to a multi-dimensional testing method and apparatus for automotive rearview mirrors. Background Technology

[0002] Rearview mirrors are crucial components for assisting vehicle visibility, and the assembly precision of the mirror lenses directly affects the driver's and passengers' field of vision. Lens assembly height, tilt angle, and the assembly gap between the lens and the housing are all key quality control indicators. Assembly deviations and abnormal gaps can cause problems such as rearview mirror field of vision shift and lens wobbling. Therefore, standardized testing of rearview mirror lenses is necessary during the production stage.

[0003] Conventional automotive rearview mirror lens inspection mainly uses a downward pressure test to check the mirror height. This method can determine whether the lens is pressed down in place, thereby confirming the basic state of the mirror height.

[0004] Regarding the aforementioned technologies, existing automotive rearview mirror lens inspection relies solely on pressing down to detect the mirror's height. This pressing down method cannot simultaneously check for vertical floating gaps and lens assembly angles, making it prone to missed detections. Summary of the Invention

[0005] To reduce the occurrence of missed parameters during rearview mirror testing, this invention provides a multi-dimensional testing method and device for automotive rearview mirrors.

[0006] Firstly, the present invention provides a multi-dimensional testing method for automotive rearview mirrors, employing the following technical solution: A multi-dimensional testing method for automotive rearview mirrors includes: S1: In response to the rearview mirror detection signal, obtain the rearview mirror landing station number; S2: Determine the lens inspection plan based on the rearview mirror's position number, and control the inspection mechanism to perform the inspection pressing operation according to the lens inspection plan; S3: Real-time acquisition of the contact pressure during the pressure-down detection operation; S4: When the contact pressure reaches the preset effective pressure threshold, determine the current pressure depth; S5: If the current pressing depth is the preset reference pressing depth, perform the lens assembly angle detection operation to determine the lens angle detection result; S6: When the lens angle test result is a qualified angle result, perform the lifting gap test operation; S7: Real-time acquisition of lifting distance during the lifting gap detection operation; S8: When the lifting distance is 0, output a signal indicating that the rearview mirror is assembled correctly.

[0007] By adopting the above technical solution, the corresponding inspection plan is matched with the workstation number. First, the lens assembly height is checked by pressing down the depth to see if it meets the standard. Then, the lens assembly angle is inspected for rearview mirrors with qualified height. Finally, the assembly gap is inspected for products with qualified angle. This realizes the sequential inspection of three quality control dimensions: lens height, assembly angle, and assembly gap. This makes up for the lack of a single height inspection dimension, effectively reduces the occurrence of missed inspections, and improves the quality control accuracy of rearview mirror factory inspection.

[0008] Optionally, methods for performing lens assembly angle detection to determine the lens angle detection results include: S50: Determine the angle detection position of the testing mechanism based on the rearview mirror falling into the workstation number; S51: Control the detection mechanism to perform vertical movement operation based on the angle detection position of the detection mechanism; S52: Obtain the preset negative pressure nozzle number, control the nozzle corresponding to the negative pressure nozzle number to perform the extension and retraction operation, and obtain the extension and retraction resistance in real time; S53: When the extension resistance reaches the preset effective resistance threshold, control the nozzle corresponding to the negative pressure nozzle number to stop performing the extension operation, and determine the current effective contact nozzle number to obtain the extension stroke of the current effective contact nozzle corresponding to the current effective contact nozzle number. S54: If the current effective contact nozzle extension stroke is consistent with the preset reference nozzle extension stroke, determine the effective negative pressure nozzle number and the number of effective negative pressure nozzle numbers; S55: If the number of effective negative pressure nozzles reaches the preset number of nozzles of the specified specifications, determine the qualified angle result; S56: If the number of effective negative pressure nozzles does not reach the number of nozzles specified, the angle result is determined to be unqualified.

[0009] By adopting the above technical solution, multiple negative pressure nozzles distributed at different detection points are used to contact the lens surface. By comparing the actual extension stroke of each nozzle with the extension stroke of the reference nozzle, it can be determined whether the lens position at the corresponding point meets the assembly requirements. By counting the number of effective contact nozzles, it is possible to quickly determine whether the lens assembly angle is qualified, thus improving the detection efficiency.

[0010] Optionally, if the number of effective negative pressure nozzles does not reach the specified number of nozzles, the methods for determining the unqualified angle results include: S560: If the number of valid negative pressure nozzle numbers does not reach the number of nozzles specified, identify invalid negative pressure nozzle numbers; S561: Obtain the verification extension stroke corresponding to the invalid negative pressure nozzle number; S562: When the verification extension stroke is less than the reference nozzle extension stroke, control the nozzle corresponding to the invalid negative pressure nozzle number to perform negative pressure suction operation; S563: Control the detection mechanism to perform a lifting operation and obtain the lifting resistance; S564: Determine the rate of change of lifting resistance based on lifting resistance; S565: When the rate of change of lifting resistance shows a preset decreasing trend within the preset lifting detection cycle, output a manual impurity removal signal; S566: When the rate of change of lifting resistance shows a preset increasing trend during the lifting detection cycle, the result of the unqualified angle is determined; S567: When the verification extension stroke is greater than the reference nozzle extension stroke, determine the unqualified angle result.

[0011] By adopting the above technical solution, further differentiation and judgment can be made on the test results that do not meet the standards. This can distinguish between two different situations: misjudgment caused by foreign object obstruction and actual angle not meeting the standards. This avoids directly judging rearview mirrors that only have impurities as unqualified, reduces unnecessary misjudgments, and further improves the accuracy of test results.

[0012] Optional, also includes: S568: Obtain the lifting height when the rate of change of lifting resistance is a preset constant trend; S5680: When the lifting height is greater than the preset effective lifting height threshold, perform the impurity blowing operation; S5681: After performing the impurity blowing operation, repeat steps S51 to S56.

[0013] By adopting the above technical solution, the impurities that can be adsorbed under constant resistance conditions can be identified, and after the adsorbable impurities are automatically blown away, they can be re-tested. Interference can be eliminated without human intervention, which further improves the automation level of the test.

[0014] Optionally, when the rate of change of lifting resistance shows an increasing trend during the lifting detection cycle, specific methods for determining the unqualified angle result include: S5660: When the rate of change of lifting resistance shows an increasing trend, determine the number of the invalid negative pressure nozzle to be corrected; S5661: Determine the number of corrected invalid negative pressure nozzles based on the corrected invalid negative pressure nozzle numbers, and obtain the current rearview mirror specification information when the number of corrected invalid negative pressure nozzle numbers reaches the specified number of nozzles; S5662: If the current rearview mirror specification information is the preset plane mirror specification, obtain the coordinates of the invalid negative pressure nozzle corresponding to the invalid negative pressure nozzle number; S5663: Determine the first and second invalid negative pressure nozzle vectors based on the coordinates of the invalid negative pressure nozzle; S5664: Obtain the current mirror normal vector based on the first invalid negative pressure nozzle vector and the second invalid negative pressure nozzle vector; S5665: Obtain the reference mirror normal vector when the rearview mirror falls into the preset workstation number; S5666: Determine the mirror angle deviation value based on the current mirror normal vector and the reference mirror normal vector; S5667: When the mirror angle deviation value falls within the preset qualified mirror angle deviation value range, determine the qualified angle result and output the detection mechanism height offset signal.

[0015] S5668: When the number of invalid negative pressure nozzles does not reach the specified number of nozzles or the mirror angle deviation value does not fall within the acceptable range of mirror angle deviation value, the unacceptable angle result is determined.

[0016] By adopting the above technical solution Further deviation calculations are performed on the increasing rate of change of lifting resistance to distinguish between two situations: the deviation of the testing mechanism itself and the actual lens assembly angle not meeting the standard. If it is only the deviation of the testing mechanism and the lens angle deviation is within the qualified range, the lens angle can still be judged as qualified and the height deviation signal of the testing mechanism will be output to prompt manual calibration, which further reduces the probability of misjudgment and makes full use of effective testing data to optimize the testing judgment logic.

[0017] Optionally, methods for controlling the nozzle corresponding to the negative pressure nozzle number to stop performing the extension and retraction operation and determining the currently valid contact nozzle number include: S530: Controls the suction nozzle corresponding to the negative pressure nozzle number to perform suction operation and obtains the suction negative pressure value corresponding to the negative pressure nozzle number; S531: When the inhalation negative pressure value falls within the preset contact negative pressure value range, determine the currently valid contact nozzle number; Step S532: When the inhalation negative pressure value does not fall within the range of the contact negative pressure value, output a manual verification signal.

[0018] By adopting the above technical solution, the contact state between the nozzle and the lens surface is determined by the suction negative pressure value. Compared with relying solely on the extension resistance, this method can identify whether the nozzle is effectively in contact with the lens surface, further improving the accuracy of determining whether the nozzle is effectively in contact with the lens surface.

[0019] Optional, also includes: S70: Acquires drive load value in real time during the lifting gap detection operation; S71: Stop performing the lifting gap detection operation when the drive load value exceeds the preset maximum drive load threshold.

[0020] By adopting the above technical solution, an overload protection mechanism is added during the lifting gap detection process. When the detection mechanism jams and the drive load exceeds the limit, the detection action is stopped in time to avoid continuous drive under jammed conditions, which could damage the mirror surface.

[0021] Secondly, the present invention provides a multi-dimensional testing device for automotive rearview mirrors, employing the following technical solution: A multi-dimensional testing device for automotive rearview mirrors, applied to the multi-dimensional testing method for automotive rearview mirrors as described above, includes a workbench, a support base for placing the rearview mirror, and a testing mechanism for testing the rearview mirror. The testing mechanism includes a testing body, a testing sliding assembly, a pressing testing assembly, and a testing nozzle assembly; The support base is located at one end of the workbench, the detection body is located at one end of the workbench near the support base, the detection sliding assembly is slidably connected to one side of the detection body, the pressing detection assembly is located at one end of the detection sliding assembly near the workbench, and the detection suction nozzle assembly is located at one end of the detection sliding assembly near the workbench.

[0022] By adopting the above technical solution, the bearing base can position and fix the rearview mirror according to the specifications of the rearview mirror to be tested. The testing sliding component can drive the pressing testing component and the testing suction nozzle component to complete the height adjustment along the testing body, and sequentially match the action requirements of lens height testing, assembly angle testing, and assembly gap testing.

[0023] Optionally, the pressure detection component includes a pressure drive and a pressure block; The detection sliding assembly has a downward sliding groove at one end near the worktable. The downward driving component is located in the downward sliding groove. The driving end of the downward driving component is fixedly connected to one end of the downward pressing block to drive the downward pressing block to abut against the rearview mirror on the bearing base.

[0024] By adopting the above technical solution, the pressing drive can drive the pressing block to make vertical feed along the pressing sliding groove. By collecting the pressing force and pressing depth, it can be determined whether the lens assembly height meets the requirements. The action of the pressing block abutting against the lens can also initially limit the lens position, providing a stable detection basis for subsequent angle detection.

[0025] Optionally, the detection nozzle assembly includes a nozzle drive and a nozzle assembly; The detection sliding component has several detection slots at one end near the worktable. The number of detection nozzle assemblies corresponds one-to-one with the number of detection slots. The nozzle drive is located in the detection slot. The drive end of the nozzle drive is fixedly connected to one end of the nozzle assembly. The nozzle assembly has a nozzle at the end away from the nozzle drive. The nozzle assembly obtains the suction negative pressure value of the nozzle to determine whether the nozzle is in contact with the rearview mirror.

[0026] By adopting the above technical solution, multiple detection slots are arranged with multiple independently driven suction nozzle assemblies. Each suction nozzle can independently complete the feeding and extension action, which can adapt to the mirror detection point requirements of different specifications of rearview mirrors. At the same time, the suction negative pressure value is combined to judge the contact state between the suction nozzle and the mirror surface, which can effectively reduce the probability of misjudgment of the contact state, improve the overall accuracy of the angle detection process, and ensure the reliability of the final detection results.

[0027] In summary, the present invention has at least one of the following beneficial technical effects: 1. Complete the quality control inspection of lens assembly height, assembly tilt angle, and upper and lower lens assembly gap in sequence. This changes the limitation of traditional methods that can only verify height, and comprehensively avoids missing defects such as angle misalignment and lens looseness, thereby improving the integrity of factory quality control. 2. Based on the negative pressure value of the suction and the rate of change of lifting resistance, foreign objects on the mirror surface and defects in the lens body are distinguished. For plane mirrors with the full suction nozzle stuck, the lens angle error and equipment height deviation are distinguished by normal vector calculation. It can automatically identify cleanable impurities and equipment deviation. 3. For absorbable impurities with constant resistance, perform automatic air blowing cleaning and retesting to reduce the frequency of manual re-inspection. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a multi-dimensional testing device for a car rearview mirror according to an embodiment of this application; Figure 2 This is an exploded view of the pressure detection component and the detection nozzle component in the embodiments of this application; Figure 3 This is a flowchart of a multi-dimensional testing method for a car rearview mirror according to an embodiment of this application.

[0029] The parts referred to by the numbers in the above attached figures are as follows: 1. Workbench; 2. Support base; 21. Support groove; 3. Detection mechanism; 31. Detection base; 32. Detection bracket; 321. Lifting sliding groove; 33. Detection sliding assembly; 331. Sliding plate; 332. Sliding seat; 3321. Pressing sliding groove; 3322. Detection groove; 34. Pressing detection assembly; 341. Pressing drive component; 342. Pressing block; 35. Detection nozzle assembly; 351. Nozzle drive component; 352. Nozzle assembly; 3521. Connecting block; 3522. Nozzle. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0031] This invention discloses a multi-dimensional testing device for automotive rearview mirrors. (Refer to...) Figure 1 A multi-dimensional testing device for automotive rearview mirrors includes a workbench 1, a support base 2, and a testing mechanism 3.

[0032] Reference Figure 1 The support base 2 has a support groove 21, which limits the rearview mirror and allows it to be placed. One end of the support base 2 is fixedly connected to one end of the worktable 1. A station photoelectric diffuser sensor is installed on the wall of the support groove 21. When the worker puts the rearview mirror into the support groove 21, the station photoelectric diffuser sensor cannot receive normal light, thus confirming that the rearview mirror has fallen into the support groove 21.

[0033] Reference Figure 1 The testing mechanism 3 includes a testing body, a testing sliding assembly 33, a pressing testing assembly 34, and a testing nozzle assembly 35. The testing body includes a testing base 31 and a testing bracket 32. One end of the testing base 31 is fixedly connected to the end of the worktable 1 near the support base 2, and the other end of the testing base 31 is fixedly connected to one end of the testing bracket 32. A lifting sliding groove 321 is provided on the side of the testing bracket 32 ​​near the support base 2. (Refer to...) Figure 2 The detection sliding assembly 33 includes a sliding plate 331 and a sliding seat 332. One end of the sliding plate 331 is embedded in the lifting sliding groove 321 and slides along the length of the lifting sliding groove 321. The end of the sliding plate 331 away from the lifting sliding groove 321 is fixedly connected to one side of the sliding seat 332. During the sliding process of the sliding plate 331 along the lifting sliding groove 321, it drives the sliding seat 332 to move.

[0034] Reference Figure 2 The pressure detection assembly 34 includes a pressure drive 341 and a pressure block 342. A pressure sliding groove 3321 is formed at one end of the sliding base 332 near the worktable 1. One end of the pressure drive 341 is fixedly installed at the bottom of the pressure sliding groove 3321. The drive end of the pressure drive 341 is fixedly connected to one end of the pressure block 342. A pressure sensor is installed at the end of the pressure block 342 away from the pressure drive 341 to detect the contact pressure.

[0035] Reference Figure 2The detection nozzle assembly 35 includes a nozzle drive 351 and a nozzle assembly 352. A plurality of detection slots 3322 are provided at one end of the sliding base 332 near the worktable 1; in this embodiment, the number of detection slots 3322 is three. The number of detection nozzle assemblies 35 is the same as the number of detection slots 3322. The nozzle drive 351 is fixedly installed at the bottom of the detection slots 3322. The nozzle assembly 352 includes a connecting block 3521 and a nozzle 3522. The end of the nozzle drive 351 away from the detection slots 3322 is fixedly connected to the connecting block 3521. The nozzle drive 351 can obtain the extension and retraction resistance when driving the connecting block 3521 towards the rearview mirror lens on the support base 2 and the lifting resistance when driving the connecting block 3521 away from the rearview mirror lens on the support base 2 through its own load. A negative pressure air passage is provided at the end of the connecting block 3521 away from the nozzle drive 351. The nozzle 3522 is fixedly installed at the end of the connecting block 3521 and is in sealed communication with the negative pressure air passage. A pressure tap is provided on the side wall of each connecting block 3521. A negative pressure transmitter is independently installed at the pressure tap position. The detection end of the negative pressure transmitter is directly connected to the inner cavity of the negative pressure air passage and is used to detect the suction negative pressure value.

[0036] Based on the same inventive concept, embodiments of the present invention provide a multi-dimensional testing method for automotive rearview mirrors.

[0037] Reference Figure 3 A multi-dimensional testing method for automotive rearview mirrors, comprising: Step S1: In response to the rearview mirror detection signal, obtain the rearview mirror landing station number.

[0038] The rearview mirror detection signal is an electrical signal that informs the control system that the rearview mirror has been placed in position when the worker places it into the support base 2. The signal is triggered by the workstation photoelectric diffuse sensor installed in the support groove 21, which detects that the light has been blocked.

[0039] The rearview mirror landing station number is a numerical designation used to distinguish different inspection stations on the production line. This number corresponds to different car models and different lens types, including plane mirrors and curved mirrors. Each rearview mirror landing station number is uniquely linked to a pre-set access channel of the station's photoelectric diffuse sensor. In multi-station scenarios, each station is equipped with an independent photoelectric diffuse sensor. Different sensors connect to different input channels of the control system. The control system matches the trigger signal to the corresponding access channel to obtain the rearview mirror landing station number. Upon receiving the photoelectric trigger signal, the control system directly reads the rearview mirror landing station number. Based on this number, the control system matches the rearview mirror's car model and lens type, and then calls the corresponding lens inspection plan for subsequent rearview mirror lens inspections.

[0040] Step S2: Determine the lens inspection plan based on the rearview mirror's landing station number, and control the inspection mechanism 3 to perform the inspection pressing operation according to the lens inspection plan.

[0041] The lens inspection plan refers to a set of inspection parameters pre-stored in the system and bound to the rearview mirror's landing station number. This set of parameters includes the reference downward pressure depth and the reference suction nozzle extension / retraction stroke corresponding to the suction nozzle drive component 351. Operators pre-enter the corresponding vehicle model and lens type inspection parameters into the equipment's human-machine interface according to the different rearview mirror landing station numbers and save them to the system's storage unit. After the control system reads the rearview mirror landing station number, it automatically retrieves the matching inspection parameters to form the lens inspection plan.

[0042] The detection pressing operation refers to the feeding action performed by the detection mechanism 3 according to the pressing stroke of the pressing drive 341 and the sliding stroke of the sliding seat 332 in the lens detection scheme. Specifically, the sliding seat 332 moves to the corresponding detection position according to the sliding stroke, and then controls the pressing drive 341 to drive the pressing block 342 to gradually approach the rearview mirror lens on the bearing base 2 according to the pressing stroke.

[0043] The sliding stroke refers to the preset displacement distance by which the sliding seat 332 moves vertically along the lifting sliding groove 321 following the sliding plate 331. The lifting drive of the sliding plate 331 is equipped with a displacement encoder, and the control system retrieves the sliding stroke to control the sliding seat 332 to rise and fall to the end of the sliding stroke. The sliding stroke completes the positioning of the detection mechanism 3, shortening the movement distance of the lower pressure block 342 when it is fed alone.

[0044] The downward stroke refers to the preset linear length by which the downward driving component 341 drives the downward block 342 to extend from the initial position toward the rearview mirror lens. The downward driving component 341 is equipped with an encoder to collect the real-time displacement distance.

[0045] Step S3: During the execution of the pressure detection operation, the pressure at the point of contact is collected in real time.

[0046] The downward pressure refers to the reverse supporting and squeezing force generated by the lens on the downward pressure block 342 when the downward pressure block 342 is fed downward and contacts the lens. This force is collected by the pressure sensor mounted on the downward pressure block 342.

[0047] Step S4: When the downward pressure reaches the preset effective pressure threshold, determine the current downward pressure depth.

[0048] The effective pressure threshold refers to the pressure critical value that is pre-calibrated and written into the lens inspection scheme. It represents the minimum pressure required for the pressure block 342 to reliably press the lens. This threshold is obtained by repeatedly pressing the rearview mirror with the pressure block 342. Here, there is no distinction between flat rearview mirrors and curved rearview mirrors. The pressure thresholds corresponding to both are the same to ensure that the pressure block 342 does not damage the mirror surface.

[0049] The current pressing depth refers to the total length of the pressing block 342 that extends from its initial zero point until it reaches the effective pressure threshold when the pressing drive 341 drives the pressing block 342. This length is collected in real time by the encoder mounted on the pressing drive 341.

[0050] When the downward pressure reaches the effective pressure threshold, it indicates that the downward pressure block 342 has abutted against the surface of the rearview mirror lens, and the downward pressure drive 341 stops continuing to feed downward.

[0051] Step S5: If the current pressing depth is the preset reference pressing depth, perform the lens assembly angle detection operation to determine the lens angle detection result.

[0052] The reference pressing depth refers to the theoretical extension length of the pressing block 342 when it comes into contact with the lens in the standard assembly state of the rearview mirror corresponding to the workstation number. It is a standard reference value that is pre-calibrated and written into the lens inspection plan. It is obtained by repeatedly pressing down on a qualified rearview mirror with no assembly deviation.

[0053] The lens angle test result refers to the judgment conclusion on whether there is any assembly tilt deviation in the pitch and lateral directions of the rearview mirror lens. It is divided into two categories: qualified angle result and unqualified angle result. The method of obtaining the result relies on the extension and retraction stroke of the 3522 suction nozzle with 3 independent detection channels, which will be described in detail later.

[0054] If the current downward pressure depth is the reference downward pressure depth, it means that there is no downward pressure gap for the rearview mirror lens and the initial judgment of the rearview mirror lens assembly height is acceptable. Further inspection of the lens installation tightness is still needed to confirm whether there is an assembly gap that allows the lens to be lifted and moved.

[0055] Step S6: If the lens angle detection result is a qualified angle result, perform the lifting gap detection operation.

[0056] The lifting gap detection operation refers to the process where, after the lens angle is within acceptable limits, the control system drives the suction nozzle drive 351 to pick up the rearview mirror lens and then drives the suction nozzle 3522 to retract and lift it upwards. The lifting displacement is collected in real time throughout the process to detect whether the lens is loose or if there is any upward lifting gap. The retraction displacement data is collected by an encoder mounted on the suction nozzle drive 351.

[0057] When the lens angle test result is a qualified angle result, it means that there is no problem with the assembly misalignment or deflection of the rearview mirror lens. However, since the previous test process was carried out by pressing down on the rearview mirror, the problem of the lifting movement gap of the rearview mirror lens may be missed. At this time, it is necessary to check whether there is a gap for the rearview mirror lens to be lifted through the lifting gap test operation.

[0058] Step S7: Acquire the lifting distance in real time during the lifting gap detection operation.

[0059] The lifting distance refers to the actual upward linear displacement of the suction nozzle 3522 during its upward retraction and lifting action, determined by the retraction stroke of the suction nozzle drive component 351. If the lens is firmly fixed without any looseness, the suction nozzle 3522 will be blocked by the lens and cannot move upward, so the lifting distance will always be 0. If the lens is loose and there is a gap, the suction nozzle 3522 will move upward freely, and the lifting distance will be greater than 0.

[0060] Step S8: When the lifting distance is 0, output a signal indicating that the rearview mirror is assembled successfully.

[0061] The rearview mirror assembly qualification signal is a signal output by the control system after determining that all inspection items have met the standards. It is used to prompt the operator that the corresponding rearview mirror has passed the inspection and fallen into the workstation number.

[0062] When the lifting distance is 0, it means that the suction nozzle 3522 is completely blocked by the lens during the lifting process and cannot move upward. The lens has no room for vertical movement and is firmly secured in place, thus meeting the qualification requirements.

[0063] The methods for performing lens assembly angle detection to determine the lens angle detection results include: Step S50: Determine the angle detection position of the testing mechanism based on the rearview mirror falling into the workstation number.

[0064] The angle detection position of the testing agency refers to the vertical standard height position at which the sliding seat 332 needs to stop after the control system retrieves the lens testing plan based on the rearview mirror's position number. This height position is the reference overall position height for the three-way suction nozzle 3522 to carry out telescopic testing.

[0065] Step S51: Based on the angle detection position of the detection mechanism, control the detection mechanism 3 to perform a vertical movement operation.

[0066] Vertical movement operation refers to the linear feed action in which the control system drives the sliding plate 331 to move vertically along the lifting sliding groove 321, thereby raising and lowering the sliding seat 332 and the entire suction nozzle assembly 352 to the angle detection position of the detection mechanism.

[0067] Step S52: Obtain the preset negative pressure nozzle number, control the nozzle 3522 corresponding to the negative pressure nozzle number to perform the extension and retraction operation, and obtain the extension and retraction resistance in real time.

[0068] The negative pressure nozzle number refers to the numerical number of the three independent nozzles 3522 corresponding to the number of the rearview mirror falling into the work station. Each number corresponds to a nozzle assembly 352 in a detection slot 3322. The control system uses the number to distinguish each nozzle 3522 and independently control and collect the extension resistance and extension stroke of each nozzle 3522.

[0069] The telescopic operation refers to the action of the corresponding numbered suction nozzle drive component 351 driving the connecting block 3521 to feed linearly downward toward the rearview mirror lens.

[0070] The telescopic resistance refers to the reaction force generated when the suction nozzle 3522 extends downward to press against the rearview mirror lens, causing the lens to push against the suction nozzle 3522 and altering the operating load of the suction nozzle drive component 351. The telescopic resistance is calculated based on the operating load of the suction nozzle drive component 351 itself. The load can be selected as either the drive output torque or the operating current value, determined according to the specific power type of the suction nozzle drive component 351.

[0071] Step S53: When the extension resistance reaches the preset effective resistance threshold, control the suction nozzle 3522 corresponding to the negative pressure suction nozzle number to stop performing the extension operation, and determine the current effective contact suction nozzle number to obtain the extension stroke of the current effective contact suction nozzle corresponding to the current effective contact suction nozzle number.

[0072] The effective resistance threshold refers to the critical resistance value pre-entered into the system, which is the minimum resistance required to determine stable contact between the nozzle 3522 and the mirror surface.

[0073] The currently valid contact nozzle number refers to the negative pressure nozzle number corresponding to nozzle 3522, which achieved the required resistance during the contact process with the rearview mirror lens.

[0074] The current effective contact nozzle extension stroke refers to the total extension stroke of the nozzle drive 351 when the nozzle 3522 corresponding to the current effective contact nozzle number moves down from its zero extension point to the effective resistance threshold. This stroke is collected in real time by the encoder mounted on the nozzle drive 351.

[0075] When the telescopic resistance reaches the effective resistance threshold, it indicates that the end of the suction nozzle 3522 corresponding to the negative pressure suction nozzle number has been firmly pressed against the rearview mirror surface. It is marked as an effective contact suction nozzle number to execute the subsequent testing process.

[0076] Step S54: If the current effective contact nozzle extension stroke is consistent with the preset reference nozzle extension stroke, determine the effective negative pressure nozzle number and the number of effective negative pressure nozzles.

[0077] The reference nozzle extension stroke refers to the standard extension stroke of the corresponding nozzle number in the workstation number of the rearview mirror. This is to distinguish between plane mirrors and curved mirrors, which are calibrated separately. Because the horizontal height of different areas of the lens surface in a curved mirror is different, this embodiment manually sets three sampling points in the curved mirror in advance, corresponding to three independent nozzle numbers. The height of the three sampling points corresponds to the reference nozzle extension stroke of the nozzle number.

[0078] The effective negative pressure nozzle number refers to the nozzle number that perfectly matches the extension and retraction stroke of the current effective contact nozzle.

[0079] The number of effective negative pressure nozzles refers to the total number of all effective nozzles (3522) that correspond to the rearview mirror and fall into the workstation number.

[0080] If the current effective contact nozzle extension stroke is consistent with the reference nozzle extension stroke, it indicates that the height of the 3522 contact point of the nozzle meets the design standard, and there is no depth deviation caused by the tilt of the mirror surface.

[0081] Step S55: If the number of effective negative pressure nozzles reaches the preset number of nozzles of the specified specifications, determine the qualified angle result.

[0082] The number of standard nozzles refers to the total number of nozzles 3522 that are standardly provided with this device; in this embodiment, it is fixed at 3.

[0083] The qualified angle result refers to the judgment conclusion that the rearview mirror lens tilt and lateral tilt do not meet the preset lens installation angle requirements.

[0084] If the number of effective negative pressure suction nozzles reaches the number of standard suction nozzles, it means that the extension length of the contact points of the three-way suction nozzles 3522 all match the standard, and there is no deflection or tilt of the lens angle.

[0085] Step S56: If the number of effective negative pressure nozzles does not reach the number of nozzles specified, determine the unqualified angle result.

[0086] An unqualified angle result refers to a judgment that the rearview mirror lens has pitch tilt, lateral deflection, or assembly posture does not meet the standard.

[0087] If the number of effective negative pressure suction nozzles does not reach the number of nozzles specified, it indicates that the depth of at least one suction nozzle at point 3522 is abnormal. In this case, there may be a situation where the lens is tilted or deflected, or impurities cause the lens to bulge, making it impossible for the suction nozzle to reach the correct lens point. This directly determines that the lens space assembly angle is unqualified.

[0088] If the number of effective negative pressure nozzles does not reach the specified number of nozzles, the methods for determining the unqualified angle result include: Step S560: If the number of valid negative pressure nozzle numbers does not reach the number of specified nozzles, identify invalid negative pressure nozzle numbers.

[0089] An invalid negative pressure nozzle number refers to a nozzle number that has completed the contact test but whose extension stroke is inconsistent with the corresponding reference nozzle extension stroke.

[0090] If the number of effective negative pressure nozzles does not reach the number of nozzles specified, it means that the current effective contact nozzle extension stroke of at least one nozzle 3522 is different from the reference nozzle extension stroke. At this time, it is impossible to directly determine whether it is caused by lens assembly tilt, lens surface concavity or unevenness, or foreign matter attached to the lens surface. It is necessary to perform layered verification and investigation on the abnormal nozzle 3522.

[0091] Step S561: Obtain the calibration extension stroke corresponding to the invalid negative pressure nozzle number.

[0092] The calibration extension stroke refers to the actual total extension length locked at the moment when the resistance reaches the effective resistance threshold when the nozzle 3522 corresponding to the current invalid negative pressure nozzle number is pressed down and contacted.

[0093] Step S562: When the verification extension stroke is less than the reference nozzle extension stroke, control the nozzle 3522 corresponding to the invalid negative pressure nozzle number to perform negative pressure suction operation; Negative pressure suction operation refers to the operation in which the control system turns on the negative pressure air source connected to the suction nozzle 3522, the negative pressure gas flows through the negative pressure air path inside the connecting block 3521 and is sucked from the end face of the suction nozzle 3522, and the negative pressure pressure value of the negative pressure air path is collected synchronously through the negative pressure pressure transmitter.

[0094] When the extension stroke of the calibration nozzle is less than the extension stroke of the reference nozzle, it indicates that the extension stroke of the nozzle 3522 does not meet the standard. According to the standard, the nozzle 3522 cannot reach the rearview mirror surface. At this time, the extension resistance of the nozzle 3522 reaches the effective resistance threshold, which means that there is a protrusion on the rearview mirror surface. At this time, it is impossible to determine whether the protrusion is caused by abnormal mirror surface processing or by foreign objects. It is necessary to perform a negative pressure suction operation to remove the point causing the protrusion in order to advance the subsequent inspection process.

[0095] Step S563: Control the detection mechanism 3 to perform the lifting operation and obtain the lifting resistance.

[0096] The lifting operation refers to maintaining negative pressure suction at the nozzle 3522, and the control system switches the nozzle drive 351 to speed control mode, which is to set a fixed low speed. The nozzle 3522 corresponding to the invalid negative pressure nozzle number is driven by the nozzle drive 351 to move slowly upward at a constant low speed. The actual output torque or working current of the nozzle drive 351 is collected in real time throughout the process.

[0097] Lifting resistance refers to the resistance value calculated by the control system during the process of the suction nozzle 352 retracting upward at a constant speed, which is controlled by the suction nozzle drive 351. The control system collects the operating load of the suction nozzle drive 351 in real time and converts it into the corresponding relationship between the pre-set operating load and lifting resistance.

[0098] Step S564: Determine the rate of change of lifting resistance based on the lifting resistance.

[0099] The rate of change of lifting resistance refers to the change in lifting resistance per unit time calculated by the control system continuously collecting lifting resistance data at fixed sampling intervals and dividing the difference in lifting resistance between two adjacent samples by the sampling duration.

[0100] Step S565: When the rate of change of lifting resistance shows a preset decreasing trend within the preset lifting detection cycle, output a manual impurity removal signal.

[0101] The lifting inspection cycle refers to the longest resistance observation time pre-entered in the lens inspection plan, to prevent lens cracking and glue detachment caused by long-term continuous inspection.

[0102] The manual cleaning signal is a prompt signal issued by the control system to notify the operator that the current detection abnormality is caused by foreign objects adhering to the rearview mirror surface, prompting the operator to clean the foreign objects and reload the material for detection.

[0103] The decreasing trend refers to the fact that the rate of change of lifting resistance remains negative throughout the entire lifting detection cycle. The lifting resistance steadily and continuously decreases as the nozzle 3522 retracts. This phenomenon indicates that the protrusion is a deformable foreign object such as glue, dust, or debris that can be adsorbed and lifted off by negative pressure. As the foreign object is gradually adsorbed and lifted, it falls off, and the lifting resistance continues to decrease. This is determined to be foreign object interference and not a defect in the lens itself. In this case, in order to ensure that the lens surface is not damaged during the suction process, a manual impurity removal signal needs to be output.

[0104] Step S566: When the rate of change of lifting resistance shows a preset increasing trend during the lifting detection cycle, determine the unqualified angle result.

[0105] The increasing trend refers to the fact that the rate of change of lifting resistance remains positive throughout the entire lifting detection cycle, and the lifting resistance steadily increases as the nozzle 3522 retracts.

[0106] When the rate of change of lifting resistance shows an increasing trend during the lifting detection cycle, it indicates that the resistance of the suction nozzle 3522 continuously increases throughout the retraction process, and there are no soft, removable attachments. The suction nozzle 3522 is continuously constrained by the rigid structure, and the suction nozzle drive 351 continuously increases its output torque and current to maintain a constant retraction speed, resulting in a continuous increase in load. This anomaly is caused by lens assembly tilt, permanent protrusion processing defects in the lens body, or stubborn, hard impurities that cannot be removed. It is a defect in the lens itself. In this case, it is necessary to combine the subsequent calculation of the lens deviation angle to determine the unacceptable angle result. Specific details will be explained in steps S5660 to S5668.

[0107] Step S567: When the verification extension stroke is greater than the reference nozzle extension stroke, determine the unqualified angle result.

[0108] When the verification extension stroke is greater than the reference nozzle extension stroke, it indicates that the mirror surface has a depression rather than a convexity. Therefore, external foreign object interference can be ruled out, and it can be directly determined that the mirror surface is abnormally processed, resulting in a depression or a deviation in the mirror surface angle. Therefore, the unqualified angle result is directly output.

[0109] This also includes: Step S568: When the rate of change of lifting resistance is a preset constant trend, obtain the lifting height.

[0110] A constant trend refers to the overall stable change in the rate of change of lifting resistance without continuous increase or decrease throughout the entire lifting detection period.

[0111] The lifting height refers to the actual vertical retraction stroke of the nozzle 3522 during its upward retraction process in speed control mode, which is collected by the encoder mounted on the nozzle drive 351.

[0112] When the rate of change of lifting resistance is constant, it indicates that the foreign object falls off quickly during the retraction process and is not a stubborn foreign object. The resistance remains stable over a long period of time. Further differentiation and treatment are needed based on the actual retraction stroke of the 3522 suction nozzle.

[0113] Step S5680: When the lifting height is greater than the preset effective lifting height threshold, perform the impurity blowing operation.

[0114] The effective lifting height threshold refers to the stroke determination critical value pre-stored in the control system. This critical value is used for different vehicle models and lens types.

[0115] The impurity blowing operation refers to the operation of blowing impurities off the mirror surface through the suction nozzle 3522. Specifically, the suction nozzle 3522 stops sucking air, allowing the impurities that were originally sucked by the suction nozzle 3522 to fall normally. Since the effective lifting height threshold is small, the fallen impurities are easy to fall back onto the lens. At this time, the negative pressure air path is switched to positive air blowing to blow the impurities that have been detached off the mirror surface.

[0116] When the lifting height is greater than the effective lifting height threshold, it means that the suction nozzle 3522 can retract smoothly with sufficient stroke, the foreign object only slightly obstructs it and does not lock the suction nozzle 3522, and the foreign object has the conditions to be blown off the mirror surface by the impurity blowing operation, so the impurity blowing operation is executed.

[0117] Step S5681: After performing the impurity blowing operation, repeat steps S51 to S56.

[0118] After the impurity blowing operation is performed, it indicates that the automated impurity cleaning has been completed and the mirror surface condition has changed. Therefore, the entire inspection process needs to be re-executed. Thus, steps S51 to S56 are re-executed.

[0119] Among them, when the rate of change of lifting resistance shows an increasing trend during the lifting detection cycle, the specific methods for determining the unqualified angle result include: Step S5660: When the rate of change of lifting resistance shows an increasing trend, determine the number of the invalid negative pressure nozzle to be corrected.

[0120] The "corrected invalid negative pressure nozzle number" refers to the unique number 3522 of the nozzle, which indicates that the rate of change of lifting resistance is continuously positive and the load is constantly increasing during the lifting and retraction process, and that the nozzle has an abnormality in hard limiting.

[0121] When the rate of change of lifting resistance shows an increasing trend, it indicates that the corresponding suction nozzle 3522 is blocked by a hard object during retraction. In order to maintain a constant retraction speed, the suction nozzle drive 351 continuously increases the torque and current. This point may have problems such as lens tilt, hard protrusion, stubborn hard impurities, or overall height deviation.

[0122] Step S5661: Determine the number of corrected invalid negative pressure nozzles based on the corrected invalid negative pressure nozzle numbers. When the number of corrected invalid negative pressure nozzle numbers reaches the number of standard nozzles, obtain the current rearview mirror specification information.

[0123] The number of corrected invalid negative pressure nozzles refers to the total number of nozzles (3522) that meet the abnormal resistance increase criteria in this test.

[0124] The current rearview mirror specification information refers to the rearview mirror category parameters stored in the system and bound to the workstation number where the rearview mirror is located, including attributes such as plane mirror, curved mirror classification, and lens model.

[0125] When the number of invalid negative pressure nozzles corrected reaches the number of standard nozzles, it indicates that all nozzles 3522 have reached a rigid limit. The fault may be that the entire mirror surface has a height offset relative to the nozzle 3522 module, causing the current effective contact nozzle extension stroke of all nozzles 3522 to be inconsistent with the reference nozzle extension stroke. It may also be due to an excessive offset of the lens installation angle. In this case, subsequent testing procedures need to be performed to make a judgment.

[0126] Step S5662: If the current rearview mirror specification information is the preset plane mirror specification, obtain the coordinates of the invalid negative pressure nozzle corresponding to the invalid negative pressure nozzle number.

[0127] The specifications of a plane mirror refer to a rearview mirror whose mirror surface has a planar structure and whose normal vector remains consistent at any position. The model of a rearview mirror can be calculated by using multi-point coordinates to determine the orientation of the mirror surface.

[0128] The coordinates of the invalid negative pressure nozzles refer to the three-dimensional spatial coordinates of the contact mirror point corresponding to each invalid negative pressure nozzle number (3522).

[0129] If the current rearview mirror specifications are for a plane mirror, then the mirror normal vector can be calculated by constructing a vector using multi-point coordinates to determine the mirror tilt angle.

[0130] Step S5663: Determine the first and second invalid negative pressure nozzle vectors based on the coordinates of the invalid negative pressure nozzle.

[0131] The first invalid negative pressure nozzle vector refers to the spatial vector obtained by performing a difference operation on the coordinates of any two invalid negative pressure nozzles.

[0132] The second invalid negative pressure nozzle vector refers to another set of spatial vectors obtained by performing a difference operation on the coordinates of two other different invalid negative pressure nozzles. The two sets of vectors are taken from different points on the mirror and are not collinear. Since the number of nozzles 3522 is 3 and they are set to be arranged in a non-collinear manner, two sets of vectors that are not collinear can be selected.

[0133] Step S5664: Obtain the current mirror normal vector based on the first invalid negative pressure nozzle vector and the second invalid negative pressure nozzle vector.

[0134] The current mirror normal vector refers to the spatial normal vector perpendicular to the surface of the plane mirror being measured, obtained by performing a cross product operation on two sets of spatial vectors. It represents the actual tilt direction of the plane mirror. An example calculation process is as follows: This embodiment uses three suction nozzles 3522. The three suction nozzles 3522 contact the plane mirror in three-dimensional coordinates (unit: mm), with the three axes being X / Y / Z. Z represents the direction of movement of the suction nozzles 3522 driven by the suction nozzle drive unit 351, which is the vertical direction. X / Y represent the horizontal plane direction. The real-time coordinates of the three suction nozzles 3522 are obtained by combining the stroke driven by each drive unit in the device with a pre-set mapping relationship. Since the horizontal direction of the suction nozzles 3522 is restricted in this embodiment, and the only movable direction is the vertical direction, it is only necessary to establish a mapping relationship between the Z coordinate and the corresponding drive stroke of each drive unit. The coordinates of the three invalid negative pressure nozzles are as follows: No. 1's invalid negative pressure nozzle coordinates are P_1: (10,0,5), No. 2's invalid negative pressure nozzle coordinates are P_2: (0,10,5), and No. 3's invalid negative pressure nozzle coordinates are P_3: (10,10,5). The vector of the first invalid negative pressure nozzle is denoted as... : (P_2-P_1) = (0-10, 10-0, 5-5) = (-10, 10, 0). The second ineffective negative pressure nozzle vector is denoted as (P_3-P_1) = (10-10, 10-0, 5-5) = (0, 10, 0). At this point, the current mirror normal vector is the first invalid negative pressure suction nozzle vector. With the second invalid negative pressure suction nozzle vector It is obtained through the cross product of space vectors, and here the current mirror normal vector is denoted as... , The value is (0, 0, -100).

[0135] Step S5665: Obtain the reference mirror normal vector of the station number where the rearview mirror falls.

[0136] The reference mirror normal vector refers to the theoretically correct standard normal vector of the standard qualified plane mirror at the workstation corresponding to the workstation number. It represents the standard allowable tilt orientation of the lens. Here, the reference mirror normal vector is denoted as... , set to (0, 0, -100).

[0137] Step S5666: Determine the mirror angle deviation value based on the current mirror normal vector and the reference mirror normal vector.

[0138] The mirror angle deviation value refers to the difference in angle between the current mirror normal vector and the reference normal vector. The formula for calculating the difference in vector angle is: Substituting the previously obtained... The value is (0, 0, -100). The value is (0, 0, -100), and the calculated included angle is 0°. Here's an example. The calculation is performed for (8, 0, -99.68), and the result is... The value is 9968 / 10000 = 0.9968. According to the inverse trigonometric function theorem, we can obtain... The value is equal to arccos(0.9968), which is approximately 4.6°. This is a case of a large deviation in the included angle during the assembly of the rearview mirror. It will not fall within the acceptable mirror angle deviation range in this embodiment, thus determining the unacceptable angle result.

[0139] Step S5667: When the mirror angle deviation value falls within the preset qualified mirror angle deviation value range, determine the qualified angle result and output the detection mechanism height offset signal.

[0140] The acceptable range of mirror angle deviation values ​​refers to the allowable range of lens tilt angle tolerances that are pre-entered into the system.

[0141] The height deviation signal of the testing mechanism refers to the alarm signal issued by the control system, which informs the staff that the lens tilt angle is qualified and there is no assembly angle problem. The root cause of the abnormality is that the overall height of the entire testing mechanism 3, including the sliding seat 332 and the suction nozzle 3522 module, has deviated, and the height of the testing equipment needs to be calibrated.

[0142] When the mirror angle deviation value falls within the acceptable mirror angle deviation value range, combined with the previous judgment result of the current pressing depth as the reference pressing depth, it can be directly determined on the plane mirror that the lens itself has no deviation in assembly height. If the synchronous limit of all nozzles 3522 is not caused by the mirror angle deviation, it can only be caused by the overall height drift of the detection mechanism 3. Therefore, the detection mechanism height offset signal is output.

[0143] Step S5668: When the number of invalid negative pressure nozzles does not reach the specified number of nozzles or the mirror angle deviation value does not fall within the qualified mirror angle deviation value range, determine the unqualified angle result.

[0144] When the number of invalid negative pressure suction nozzles is not corrected to the number of nozzles specified, it indicates that only some nozzles 3522 have hard limiters. This is caused by local hard protrusions on the lens, misalignment on one side, or local hard impurities that cannot be peeled off. Therefore, the lens is judged to be defective.

[0145] When the mirror angle deviation value does not fall within the acceptable range, it indicates that the tilt angle of the plane mirror itself exceeds the tolerance, which is considered an unacceptable lens assembly angle, and the result is directly judged as an unacceptable angle.

[0146] The method for controlling the suction nozzle 3522 corresponding to the negative pressure suction nozzle number to stop performing the extension and retraction operation and determining the currently valid contact suction nozzle number includes: Step S530: Control the suction nozzle 3522 corresponding to the negative pressure nozzle number to perform the suction operation and obtain the suction negative pressure value corresponding to the negative pressure nozzle number.

[0147] The suction negative pressure value refers to the negative pressure value inside the air passage of the suction nozzle 3522, which is collected in real time by the negative pressure transmitter after the suction nozzle 3522 is turned on to suck air. It indicates the degree of sealing and fit of the end face of the suction nozzle 3522.

[0148] Step S531: When the inhalation negative pressure value falls within the preset contact negative pressure value range, determine the number of the currently valid contact nozzle.

[0149] The negative pressure range refers to the negative pressure threshold range stored in the control system for determining whether the suction nozzle 3522 and the rearview mirror surface are completely sealed and fitted.

[0150] When the suction negative pressure value falls within the contact negative pressure value range, it indicates that the end face of the nozzle 3522 is completely blocked by the rearview mirror surface, there is no obvious air leakage in the air passage, the nozzle 3522 and the contact object are fully in contact, and the negative pressure nozzle number is marked as the valid contact nozzle number.

[0151] Step S532: When the inhalation negative pressure value does not fall within the range of the contact negative pressure value, output a manual verification signal.

[0152] The manual verification signal refers to the upper computer pop-up reminder signal output by the control system, which is used to inform the staff that there is an abnormality in the adhesion of nozzle 3522 and that manual re-inspection is required.

[0153] When the suction negative pressure value does not fall within the contact negative pressure value range, it indicates that the object contacted by the suction nozzle 3522 is not fully in contact with the end of the suction nozzle 3522, and there is air leakage. It can be determined that the suction nozzle 3522 is not fully in contact with the mirror surface and is affected by the protrusion of the mirror surface. At this time, a manual verification signal is directly output to quickly determine the abnormal mirror surface or the situation of impurities attached to the mirror surface.

[0154] This also includes: S70: Acquires drive load value in real time during the lifting gap detection operation.

[0155] The drive load value refers to the output torque or working current value collected in real time when the nozzle drive 351 is running. When the nozzle drive 351 is a servo motor or stepper motor type rotary drive structure, the output torque is collected and the resistance is converted. If it is a conventional DC motor or electric push rod structure, the working current is collected and converted according to the pre-calibrated mapping relationship to obtain the mirror blocking force borne by the nozzle 3522 during the retraction process.

[0156] S71: Stop performing the lifting gap detection operation when the drive load value exceeds the preset maximum drive load threshold.

[0157] The maximum drive load threshold refers to the safe load limit of the detection system that is pre-entered to protect the rearview mirror from damage.

[0158] When the drive load value exceeds the preset maximum drive load threshold, it indicates that the suction nozzle 3522 is rigidly stuck by the mirror surface, the retraction resistance is too large, and continuous movement will cause damage to the rearview mirror lens. Therefore, the lifting gap detection operation is stopped.

[0159] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A multi-dimensional testing method for automotive rearview mirrors, characterized in that, include: S1: In response to the rearview mirror detection signal, obtain the rearview mirror landing station number; S2: Determine the lens inspection plan based on the number of the workstation where the rearview mirror falls, and control the inspection mechanism (3) to perform the inspection pressing operation according to the lens inspection plan; S3: Real-time acquisition of the contact pressure during the pressure-down detection operation; S4: When the contact pressure reaches the preset effective pressure threshold, determine the current pressure depth; S5: If the current pressing depth is the preset reference pressing depth, perform the lens assembly angle detection operation to determine the lens angle detection result; S6: When the lens angle test result is a qualified angle result, perform the lifting gap test operation; S7: Real-time acquisition of lifting distance during the lifting gap detection operation; S8: When the lifting distance is 0, output a signal indicating that the rearview mirror is assembled correctly.

2. The multi-dimensional testing method for automotive rearview mirrors according to claim 1, characterized in that, Methods for performing lens assembly angle testing to determine the lens angle test results include: S50: Determine the angle detection position of the testing mechanism based on the rearview mirror falling into the workstation number; S51: Based on the angle detection position of the detection mechanism, control the detection mechanism (3) to perform vertical movement operation; S52: Obtain the preset negative pressure nozzle number, control the nozzle (3522) corresponding to the negative pressure nozzle number to perform the extension and retraction operation, and obtain the extension and retraction resistance in real time; S53: When the extension resistance reaches the preset effective resistance threshold, control the nozzle (3522) corresponding to the negative pressure nozzle number to stop performing the extension operation, and determine the current effective contact nozzle number to obtain the extension stroke of the current effective contact nozzle corresponding to the current effective contact nozzle number. S54: If the current effective contact nozzle extension stroke is consistent with the preset reference nozzle extension stroke, determine the effective negative pressure nozzle number and the number of effective negative pressure nozzle numbers; S55: If the number of effective negative pressure nozzles reaches the preset number of nozzles of the specified specifications, determine the qualified angle result; S56: If the number of effective negative pressure nozzles does not reach the number of nozzles specified, the angle result is determined to be unqualified.

3. The multi-dimensional testing method for automotive rearview mirrors according to claim 2, characterized in that, If the number of effective negative pressure nozzles does not reach the specified number of nozzles, the methods for determining the unqualified angle results include: S560: If the number of valid negative pressure nozzle numbers does not reach the number of nozzles specified, identify invalid negative pressure nozzle numbers; S561: Obtain the verification extension stroke corresponding to the invalid negative pressure nozzle number; S562: When the verification extension stroke is less than the reference nozzle extension stroke, control the nozzle (3522) corresponding to the invalid negative pressure nozzle number to perform negative pressure suction operation; S563: Control the detection mechanism (3) to perform the lifting operation and obtain the lifting resistance; S564: Determine the rate of change of lifting resistance based on lifting resistance; S565: When the rate of change of lifting resistance shows a preset decreasing trend within the preset lifting detection cycle, output a manual impurity removal signal; S566: When the rate of change of lifting resistance shows a preset increasing trend during the lifting detection cycle, the result of the unqualified angle is determined; S567: When the verification extension stroke is greater than the reference nozzle extension stroke, determine the unqualified angle result.

4. The multi-dimensional testing method for automotive rearview mirrors according to claim 3, characterized in that, Also includes: S568: Obtain the lifting height when the rate of change of lifting resistance is a preset constant trend; S5680: When the lifting height is greater than the preset effective lifting height threshold, perform the impurity blowing operation; S5681: After performing the impurity blowing operation, repeat steps S51 to S56.

5. The multi-dimensional testing method for automotive rearview mirrors according to claim 3, characterized in that, When the rate of change of lifting resistance shows an increasing trend during the lifting detection cycle, the specific methods for determining the unqualified angle result include: S5660: When the rate of change of lifting resistance shows an increasing trend, determine the number of the invalid negative pressure nozzle to be corrected; S5661: Determine the number of corrected invalid negative pressure nozzles based on the corrected invalid negative pressure nozzle numbers, and obtain the current rearview mirror specification information when the number of corrected invalid negative pressure nozzle numbers reaches the specified number of nozzles; S5662: If the current rearview mirror specification information is the preset plane mirror specification, obtain the coordinates of the invalid negative pressure nozzle corresponding to the invalid negative pressure nozzle number; S5663: Determine the first and second invalid negative pressure nozzle vectors based on the coordinates of the invalid negative pressure nozzle; S5664: Obtain the current mirror normal vector based on the first invalid negative pressure nozzle vector and the second invalid negative pressure nozzle vector; S5665: Obtain the reference mirror normal vector when the rearview mirror falls into the preset workstation number; S5666: Determine the mirror angle deviation value based on the current mirror normal vector and the reference mirror normal vector; S5667: When the mirror angle deviation value falls within the preset qualified mirror angle deviation value range, determine the qualified angle result and output the detection mechanism height offset signal; S5668: When the number of invalid negative pressure nozzles does not reach the specified number of nozzles or the mirror angle deviation value does not fall within the acceptable range of mirror angle deviation value, the unacceptable angle result is determined.

6. The multi-dimensional testing method for automotive rearview mirrors according to claim 2, characterized in that, The methods for controlling the suction nozzle (3522) corresponding to the negative pressure suction nozzle number to stop performing the extension and retraction operation and determining the currently valid contact suction nozzle number include: S530: Control the suction nozzle (3522) corresponding to the negative pressure suction nozzle number to perform suction operation and obtain the suction negative pressure value corresponding to the negative pressure suction nozzle number; S531: When the inhalation negative pressure value falls within the preset contact negative pressure value range, determine the currently valid contact nozzle number; S532: When the inhalation negative pressure value does not fall within the range of the contact negative pressure value, output a manual verification signal.

7. The multi-dimensional testing method for automotive rearview mirrors according to claim 1, characterized in that, Also includes: S70: Acquires drive load value in real time during the lifting gap detection operation; S71: Stop performing the lifting gap detection operation when the drive load value exceeds the preset maximum drive load threshold.

8. A multi-dimensional testing device for automotive rearview mirrors, applied to the multi-dimensional testing method for automotive rearview mirrors as described in any one of claims 1 to 7, characterized in that: It includes a workbench (1), a support base for placing the rearview mirror (2), and a testing mechanism for testing the rearview mirror (3). The detection mechanism (3) includes a detection body, a detection sliding assembly (33), a pressure detection assembly (34), and a detection nozzle assembly (35); The support base (2) is located at one end of the workbench (1), the detection body is located at one end of the workbench (1) near the support base (2), the detection sliding assembly (33) is slidably connected to one side of the detection body, the pressure detection assembly (34) is located at one end of the detection sliding assembly (33) near the workbench (1), and the detection nozzle assembly (35) is located at one end of the detection sliding assembly (33) near the workbench (1).

9. A multi-dimensional testing device for automotive rearview mirrors according to claim 8, characterized in that, The pressure detection component (34) includes a pressure drive (341) and a pressure block (342). The detection sliding assembly (33) has a downward sliding groove (3321) at one end near the worktable (1). The downward driving member (341) is located in the downward sliding groove (3321). The driving end of the downward driving member (341) is fixedly connected to one end of the downward block (342) to drive the downward block (342) to abut against the rearview mirror on the bearing base (2).

10. A multi-dimensional testing device for automotive rearview mirrors according to claim 9, characterized in that, The detection nozzle assembly (35) includes a nozzle drive (351) and a nozzle assembly (352). The detection sliding component (33) has a plurality of detection slots (3322) at one end near the worktable (1). The number of detection nozzle components (35) corresponds one-to-one with the number of detection slots (3322). The nozzle drive component (351) is located in the detection slot (3322). The drive end of the nozzle drive component (351) is fixedly connected to one end of the nozzle assembly (352). The nozzle assembly (352) has a nozzle (3522) at one end away from the nozzle drive component (351). The nozzle assembly (352) obtains the suction negative pressure value of the nozzle (3522) to determine whether the nozzle (3522) is in contact with the rearview mirror.

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