Automatic detection system and method for automobile projection lamp

Abstract

The invention provides an automatic detection system and method for an automobile projection lamp, and the system is provided with a testing machine table and an assembling machine table, and a feeding and discharging assembly, a tool carrier and airtightness detection assembly, a laser marking machine and a screw driving assembly are disposed around an annular assembling platform of the assembling machine table. The test platform comprises an imaging colorimeter detection assembly, an electrical performance test assembly and a mobile module, automatic assembly and functional test of the automobile projection lamp can be realized, and pattern detection and product traceability functions are effectively realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile projection lamps, in particular, to an automobile projection lamp automatic detection system and method thereof. BACKGROUND

[0002] The automobile projection lamp is a lighting device installed on a vehicle, which can project patterns, logos or information onto the ground or other surfaces, mainly for improving aesthetics, brand recognition or practical functions. With the increasing youthfulness of the automobile consumer group, the automobile projection lamp, as an important part of the automobile appearance, is given higher expectations. At the same time, since the automobile projection lamp not only has a signal indication function, but also assumes more roles such as information interaction, it is attracting more and more attention from lamp manufacturers, OEMs and terminal consumers.

[0003] The traditional assembly and detection methods of automobile projection lamps are all manual. First, the efficiency of manual assembly is very low, which is difficult to meet the needs of mass production. Second, the difficulty of human eye detection is great, and it is easy to cause false detection, missed detection, etc. due to fatigue.

[0004] Although there are some automatic detection devices for automobile projection lamps in the prior art, such as Chinese patent application publication CN117092128A, which discloses a defect detection device for automobile projection lamps, which includes a box body, a box door mounted on the box body, an image acquisition mechanism, a projection plate, an industrial computer and an alarm.

[0005] For example, Chinese patent application publication CN111665022A discloses an automatic device for detecting the performance of automobile welcome lights, which includes a code scanning gun, a power supply, a multimeter, a camera, a PLC and an upper computer industrial computer. The PLC controls the execution mechanism, when the detection starts, controls the cylinder to put the welcome light module into the darkroom, and controls the cylinder to connect the circuit to the welcome light module, and at the same time gives a signal to the upper computer industrial computer, and the detection is completed; the upper computer industrial computer receives the PLC preparation completion signal, the code scanning gun starts to scan the code, the upper computer industrial computer then controls the program-controlled power supply to provide power to the welcome light module, the upper computer industrial computer controls the multimeter to measure the current when the power is on, and controls the camera to take a photo, analyzes the photo, and calculates the LED luminous flux, color coordinate and lumen value through the algorithm; after the detection is completed, the upper computer industrial computer gives a signal to the PLC, the PLC removes the circuit from the welcome light module, and moves the module out of the darkroom, and the detection is completed.

[0006] The deficiency of the above prior art is the lack of automatic assembly and detection equipment specially used for automobile projection lamps, and the lack of special detection means for pattern integrity, clarity, local yellowing, local ghosting and whether the pattern is reversed. In addition, the prior art mainly detects the luminous flux, color coordinate and lumen value of the LED lamp bead, and lacks pattern detection and traceability function of the product.

[0007] Such as Chinese utility model patent CN 215636967U discloses a projection lamp device, by the projection lamp light machine is rotatably arranged on the fixed support, and the adjusting assembly is connected with the fixed support and the projection lamp light machine to drive the projection lamp light machine to rotate, the projection lamp light machine is realized through rotation Angle adjustment, eliminate the error produced due to the machining and assembly of parts, so as to ensure that the pattern and light type projected by the projection lamp device are not distorted, and the projection effect of the projection lamp device is improved. However, as for the pattern and light type projected without distortion, real-time online detection cannot be realized.

[0008] Also such as Chinese utility model patent CN209485660U discloses a car lamp detection equipment, including machine table, the machine table is provided with conveying device, positioning device, distance adjusting device and car lamp detection device; The assembly and detection of car lamp can be automatically realized, and the assembly efficiency and detection yield are greatly improved. However, this patent only introduces the detection of car lamp light and assembly, realizes the detection of car lamp quality through two cameras, mainly detects the color and gradient of light and other parameters, that is, the detection of the image of the camera on the image of the car lamp, not the detection of the pattern of the projection head. When the appearance is qualified, the color and brightness of the projected light are qualified, but such as the defective product that has already entered dust inside is helpless.

[0009] However, there is an urgent need in the prior art for a technical solution that can realize automatic assembly and automatic detection of projection pattern quality. SUMMARY

[0010] In order to solve the above problems, the present application provides an automatic detection system for automobile projection lamp and a method thereof, which can realize the automatic assembly and functional test of automobile projection lamp, and effectively realize pattern detection and traceability function of products.

[0011] According to one aspect of the present application, an automatic detection system for automobile projection lamp is provided, which comprises a test bench and an assembly bench connected side by side. The test bench is located on the left side of the automatic detection system, and the test bench comprises a darkroom, which has a test platform and a light projection module inside the darkroom. The assembly bench is located on the right side of the automatic detection system, and the assembly bench comprises a carrying assembly capable of moving in and out of the darkroom of the test bench and a ring-shaped assembly platform. The projection lamp carried by the carrier platform on the test platform is carried to the ring-shaped assembly platform by the carrying assembly through the lifting door located on the side of the test bench under the transmission of the moving module; the lifting door is closed in the detection state and opened in the non-detection state. The annular assembly platform is provided with tool carriers, feeding and discharging assemblies, screw driving assemblies, air tightness detection assemblies and laser marking machines around the periphery, the conveying assembly comprises an X module moving in the X direction, a Y module moving in the Y direction and a Z module moving in the Z direction, wherein the Z module moves up and down through a pneumatic cylinder; The test platform is provided in the test machine, and comprises a test module and a first moving module. The test module comprises an imaging colorimeter detection assembly installed on the first moving module, which can move forward and backward along the Y axis and move up and down along the Z axis through the Y direction moving module and the first Z direction moving module of the first moving module. The light projection module comprises an electrical performance test assembly and a rotatable carrier platform. The electrical performance test assembly is installed on one side of the rotatable carrier platform, and the carrier platform is used for placing the measured projection lamp for light projection and is installed on the second moving module, which can move left and right along the X axis and move up and down along the Z axis through the X direction moving module and the second Z direction moving module of the second moving module. It should be particularly emphasized here that since the second moving module and the conveying assembly can move in the XZ direction, different technical terms are used to represent them in order to avoid confusion. The second moving module is located in the test machine and can move left and right and up and down. The X module, the Y module and the Z module refer to the conveying modules in the conveying assembly. The X direction moving module and the Z direction moving module refer to the moving modules in the second moving module in different directions, which do not refer to the same component. The conveying module mainly functions to convey the products in the tool on the annular assembly platform to the carrier platform on the second moving module.

[0012] Alternatively, the second moving module comprises part of the test machine. The Y axis moving module, the first Z direction moving module, the second Z direction moving module and the X direction moving module are located in the test machine. The part outside the test machine, i.e. the X module, the Y module and the Z module, is located in the conveying assembly, which can provide movement support for each part of the assembly.

[0013] According to the above automatic detection system, the imaging colorimeter detection assembly as the test module is installed in parallel with the light projection module. The head of the test module faces the top of the machine to detect various parameters of the pattern projected by the measured projection lamp, including but not limited to brightness, color (color coordinates, color temperature, etc.), character brightness, threshold brightness, two-dimensional brightness distribution, three-dimensional brightness distribution, color, character color, color quality, Blactmura, residual image, viewing angle, contrast and the like.

[0014] According to the above automatic detection system, the electrical performance test assembly can detect various electrical performances of the measured projection lamp. Electrical performances such as voltage, current, power and their stability and the like.

[0015] According to the automatic detection system, the projection lamp carrier platform is placed downward as a light projection module. When detection is performed, the X-direction moving module and the second Z-direction moving module are used to move to a suitable position, and the rotating carrier platform is rotated by 180 degrees to project an image toward the top of the machine table. At this time, the test module detects the projected image.

[0016] According to the automatic detection system, the tool carrier includes a fixed seat and a placement groove. When the projection lamp is assembled and detected, it is firmly positioned in the placement groove of the fixed seat.

[0017] According to the automatic detection system, the screwing assembly is used for screwing the projection lamp.

[0018] According to the automatic detection system, the air tightness detection assembly is used for air tightness detection of the projection lamp.

[0019] According to the automatic detection system, the laser marking machine is used for marking the projection lamp that passes the detection.

[0020] According to the automatic detection system, the first moving module includes an X-direction moving module, a Y-direction moving module and a Z-direction moving module, and the second moving module includes an X-direction moving module and a Z-direction moving module. In the moving modules and the carrying assembly, at least an A-track module and a B-track module are installed to move the moving modules in a set direction.

[0021] According to the automatic detection system, the light projection module and the test module are both configured with a Z-direction moving module.

[0022] According to the automatic detection system, the carrier platform is used to receive the projection lamp to be detected that is conveyed to the test platform to perform optical performance test and electrical performance test.

[0023] According to the automatic detection system, the product sensor is installed on the carrier platform to sense the measured product; the carrier module is used to receive the measured projection lamp; the power supply module is used to provide power for the measured projection lamp; the 360° rotation module is used to realize the rotation of the carrier platform; the rotation sensor is used to sense the rotation of the carrier platform; the combined sensor is used to judge different carriers and identify different products, thereby realizing the compatibility of multiple products; and the compression cylinder is used to drive the compression of the measured projection lamp. The rotation module can nominally rotate 360 degrees around the rotation support, and in fact, it only needs to rotate the projection head of the projection lamp from downward to upward, that is, 180 degrees. As the combined sensor, at least three sensors are installed on the carrier, and different numbers are selected according to different types of projection lamps. At least three sensors in the combined sensor are marked as a, b, c, and so on. When the measured projection lamp is of the first type, the a, b, c, … sensors will sense according to the first type sensing logic, and the sensing results will be transmitted back to the control system through short-range communication to arrange the automatic control program of the automatic detection system. Similarly, when the measured projection lamp is of the second type, the a, b, c, … sensors will sense according to the second type sensing logic, and the sensing results will be transmitted back to the control system through short-range communication to arrange the automatic control program of the automatic detection system.

[0024] According to the automatic detection system, the test machine is installed in a dark room, and the assembly machine is installed in a cabinet. An all-in-one machine is also provided on the cabinet for automatic operation of the entire system; a display is used to display the running state; a touch screen and a mouse keyboard box are used to input operation instructions; a gas source processing element is used to manage the charging and discharging of the gas source; a safety grating is used to detect the emergency stop when the operator mistakenly enters during system operation; an alarm lamp is used for fault alarm; an ion fan is used to remove static electricity in the assembly machine; and a work platform support is used to assist the installation of the cabinet of the assembly machine.

[0025] According to the automatic detection system, the front of the automatic detection system is provided with a cabinet door.

[0026] According to the automatic detection system, a gas pump is further provided to provide a gas source.

[0027] According to another aspect of the present application, an automatic detection method of an automobile projection lamp is provided, comprising the following steps: S1, placing the automobile projection lamp cover on the annular assembly platform, and automatically feeding by the feeding assembly; S2, screwing the automobile projection lamp by the screwing assembly; S3, verifying the sealing performance of the tightened automobile projection lamp by the air tightness detection assembly; S4, the conveying assembly delivers the automobile projection lamp to the test platform, and sequentially performs electrical performance detection and optical pattern test; S5, after the test is completed, the test platform is reset, and the conveying assembly returns the automobile projection lamp to the annular assembly platform; S6, the qualified automobile projection lamp is automatically laser marked, and the unqualified automobile projection lamp is alarmed and the abnormal data is recorded.

[0028] According to the above method, the S3 step is omitted to detect the projection lamp without sealing performance verification.

[0029] According to the present application, although the detection is carried out for the automobile projection lamp, it is obvious that the system and method of the present application are suitable for any lamp which needs to be detected by testing the projection pattern.

[0030] According to the present application, although the movement of the projection lamp between the test platform and the assembly platform is realized by one track module, it is obvious that one more track module can be added to realize the shuttle without stopping, which can effectively shorten the CT time (i.e. the interval time between two workpiece processing).

[0031] Advantages

[0032] The present application has the following advantages: The automatic detection system and method for the automobile projection lamp according to the present application can realize one-stop automatic assembly and functional test of the projection lamp because the assembly detection is realized on the same assembly machine, can effectively realize the traceability function of the product because the pattern detection can be realized, and can improve the production efficiency and assembly precision because the full automation operation, and can be compatible with more products by the modularization and combination of the inductor, and support flexible manufacturing. One more track module can be added to realize the shuttle without stopping, which can effectively shorten the CT time. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a perspective view of the appearance of an automatic detection system for an automobile projection lamp according to an embodiment of the present application with a cabinet; Figure 2 is a schematic view of the internal structure of an assembly machine in an automatic detection system for an automobile projection lamp shown in Figure 1 Figure 3 is a schematic view of the internal structure of an overall machine in an automatic detection system for an automobile projection lamp shown in Figure 1 Figure 4 is a schematic view of the internal structure of an overall machine in an automatic detection system for an automobile projection lamp shown in Figure 3 is an enlarged schematic view of a second Z-direction movement module in an automatic detection system for an automobile projection lamp shown in​​ Figure 5 FIG. 1 is a flowchart showing a process of generating a detection report by an automatic detection system of a car projection lamp according to an embodiment of the present application.

[0034] Figure 6 FIG. 2 is a schematic view showing an appearance of a projection lamp detected in an automatic detection system of a car projection lamp according to an embodiment of the present application.

[0035] Figure 7 FIG. 3 is a schematic view showing a second detection platform when a machine table is opened in an automatic detection system of a car projection lamp according to an embodiment of the present application.

[0036] Figure 8 FIG. 4 is an enlarged schematic view of a carrier platform in an automatic detection system of a car projection lamp according to an embodiment of the present application.

[0037] FIG. 1 is a schematic view showing an automatic detection system of a car projection lamp according to an embodiment of the present application. 101 - machine table cabinet door; 102 - lifting door; DETAILED DESCRIPTION

[0038] Embodiments of the present application will be described below with reference to the accompanying drawings, which should be understood as merely illustrative, not restrictive.

[0039] Figure 1It is the appearance perspective schematic diagram of the automatic detection system of the automobile projection lamp with the cabinet in an embodiment; Figure 2 It is the structure schematic diagram of the assembly machine table in the automatic detection system; Figure 3 It is the structure schematic diagram of the whole machine table in the automatic detection system.

[0040] As Figures 1-3 shown, in an embodiment of the present application, the automatic detection system of the automobile projection lamp comprises a test machine table 1 and an assembly machine table 2 connected side by side; the test machine table 1 comprises a darkroom (i.e. left cabinet), which has a test platform 10 (marked in Figure 3 the darkroom) and a moving module, and the assembly machine table 2 comprises a carrying assembly 5 capable of moving in and out of the darkroom of the test machine table 1 and a ring-shaped assembly platform 6; The projection lamp 4 carried on the vehicle platform 37 completed on the test platform 10 is carried to the ring-shaped assembly platform 6 through the lifting door 102 located at the side of the test machine table 1 and the carrying assembly under the transmission of the moving module; the lifting door 102 is closed in the detection state and opened in the non-detection state; The ring-shaped assembly platform 6 is provided with an upper and lower assembly 7, a tool carrier 8, an airtight detection assembly 9, a laser marking machine 21 and a screw driving assembly 22 around the periphery, and the carrying assembly comprises an X module moving in the X direction, a Y module moving in the Y direction and a Z module moving in the Z direction, wherein the Z module moves up and down through a pneumatic cylinder (not shown); The test machine table 1 is provided with a test platform 10, which comprises a test module and a light projection module; the test module comprises an imaging colorimeter detection assembly 11 installed on the moving module and capable of moving forward and backward along the Y axis and moving up and down along the Z axis through the Y direction moving module and the first Z direction moving module of the moving module respectively; the light projection module comprises an electrical performance test assembly 12 installed on one side of a rotatable vehicle platform 37 and a rotating vehicle platform 37 used for placing the projection lamp 4 to be tested for light projection, and the vehicle platform 37 is installed on the moving module and capable of moving left and right along the X axis and moving up and down along the Z axis through the X direction moving module and the second Z direction moving module of the moving module (the vehicle platform 37 contains the electrical performance test assembly 12).

[0041] The test machine table 1 and the assembly machine table 2 of the automobile projection lamp automatic detection system are arranged side by side on the machine table surface of the automatic detection system 3; the test machine table 1 is provided with a test platform 10, and the assembly machine table 2 comprises a carrying assembly 5 outside the test machine table 1 and a ring-shaped assembly platform 6; the present application is described by taking the automobile projection lamp 4 as an example, and in fact, the present application can be suitable for electrical performance and light performance detection of all lamps. Figure 6The front and rear views of the two types of automobile projection lamps 4 are shown as examples. If other lamps need to be detected, corresponding changes or modifications can be made, such as modifying the corresponding sizes and shapes. As shown in the combination sensor 45, different types of projection lamps can be sensed according to different sensing logic. Figure 8

[0042] Referring to Figures 1-3 , the annular assembly platform 6 is provided with an upper and lower assembly component 7, a tool carrier 8, a gas tightness detection component 9, a laser marking machine 21, and a screw driving component 22 (the mechanical arm 26 of the screw driving component 22 is marked in Figure 3 ); the upper and lower assembly component 7 is used to fix and position the projection lamp 4 when it enters the assembly and detection process, and to flow out of the track module after the assembly and detection are completed; the tool carrier 8 includes a fixed seat and a placement groove (not shown), which is used to firmly position the measured projection lamp in the placement groove of the fixed seat during assembly and detection. In a preferred embodiment, the projection lamp 4 is locked in the upper and lower assembly component 7 or in the carrier module 41 (see Figure 8 ) that carries the projection lamp 4; the gas tightness detection component 9 is used for gas tightness detection of the projection lamp, which is usually performed after the screw driving component 22 for screwing the projection lamp 4 is completed. In some preferred embodiments, gas tightness detection is not required because the lamps such as automobile projection lamps have already completed gas tightness detection when they are fed. The laser marking machine 21 is used for marking the qualified products, such as specifications, production numbers, and production dates. Once the unqualified products are not marked, an alarm program is started, such as making the alarm light 20 flash, prompting the flow line to flow out the unqualified products without going through the marking process.

[0043] The test platform 10 is provided in the test machine 1, which includes an imaging colorimeter detection component 11, an electrical performance test component 12, and a moving module.

[0044] The moving module can provide movement support for each part of the component in the test machine 1. The moving module includes a first moving module and a second moving module, the first moving module includes a Y-direction moving module 27, a first Z-direction moving module 28, the second moving module includes a second Z-direction moving module 30, and an X-direction moving module. Here, XYZ direction refers to the horizontal direction of the automated detection system 3 as X direction, the vertical direction as Y direction, and the vertical direction as Z direction, which is only a right-angle coordinate system set for the sake of simplicity of description. Among them, the Y-direction moving module 27 is used for the longitudinal movement of the imaging colorimeter detection component 11 in the front and rear direction Figure 3 ​The first Z-direction moving module 28 is used for the up-and-down movement of the imaging colorimeter detection assembly 11, the second Z-direction moving module 30 is used for the up-and-down movement of the electrical performance testing assembly 12, and the X-direction moving module is used for the horizontal movement of the assemblies. Inside the testing machine 1, the X-direction moving module provides the horizontal movement of the carrier platform 37 in and out of the lifting door 102, and together with the moving module outside the machine 1, the streamlined movement of the projection lamp is completed. In the present application, as part of the moving module and the carrying module, at least the A-track module 25 and the B-track module 29 are installed, and the moving module and the carrying module move along the track module.

[0045] In the present application, the imaging colorimeter detection assembly 11 as a testing module projects detection light to the top of the machine 1. For the sake of understanding, Figure 8 The reference numeral 39 is a virtual detection field artificially drawn to simulate the detection range of the imaging colorimeter detection assembly, which is used to detect various parameters of the measured projection lamp 4, including but not limited to brightness, color (color coordinates, color temperature, etc.), character brightness, threshold brightness, two-dimensional brightness distribution, three-dimensional brightness distribution, color, character color, color quality, Blactmura, residual image, viewing angle, contrast, etc.

[0046] The electrical performance testing assembly 12 is installed in the projection module (the module where the carrier platform 37 is located), which can detect various electrical performances of the measured projection lamp 4. The electrical performances include voltage, current, power, and their stability, etc.

[0047] In another preferred embodiment, the carrying assembly 5 and the carrier platform 37 can be the same platform, that is, the carrier platform 37 is the carrying assembly 5 when it moves outside the machine 1. The carrier platform 37 is used to receive the measured projection lamp 4 conveyed to the testing platform 1 for optical performance testing and electrical performance testing.

[0048] In the present application, the assembling machine 2 and the testing machine 1 are installed in the cabinet of the automatic detection system 3 for dust prevention and safety consideration. The testing machine 1 is installed in the left cabinet which is set as a darkroom. The assembling machine 2 is installed in the right cabinet. An all-in-one machine 19 is installed on the top right of the cabinet for automatic operation of the whole system. A display 18 is installed beside the all-in-one machine 19 for displaying the running status of each component feedback. A touch screen 17 and a mouse keyboard box 15 are installed at a proper height of the right cabinet for inputting operation instructions. An air source processing element 13 is installed in the lower cabinet door of the assembling machine 3 for air charging and discharging management. An observation window is installed on the right cabinet for direct observation of the running status of the machine. The observation window can also be used as a simple maintenance port. A safety grating 14 is installed for emergency stop and alarm when a foreign object intrudes into the observation window during system operation, such as when a detection operator mistakenly puts his head or hand into the observation window. An alarm lamp 20 is installed for fault alarm, including alarm when a fault occurs in each component and / or when a substandard product is detected. An ion fan 16 is installed on the ring-shaped assembling platform 6 for removing static electricity in the assembling machine, more specifically, removing static electricity from the ring-shaped assembling platform 6 and the surrounding operating components. When the cabinet is installed on the automatic detection system 3, the positioning and limiting effect of the operating platform support 24 helps to firmly install the cabinet on the assembling machine 2.

[0049] According to the present application, the front of the automatic detection system 3 can also be provided with a cabinet door 101 for easy opening of the machine for replacement of consumables or maintenance. In a preferred embodiment, lifting door side walls 31 are provided on both sides of the lifting door 102 to limit the width of the lifting door 102 and facilitate installation of the lifting door. In a preferred embodiment, an air pump 32 is also included in the testing machine 1 as the air source for driving the air cylinder (not shown).

[0050] Figure 4 is a schematic view showing Figure 3 an automatic detection system for a car projection lamp. As shown in Figure 4 , the second Z-direction moving module 30 includes a tank chain 33, a base 34, a mounting seat 35, a rotating support side plate of the carrier platform 36, and a carrier platform 37. With this structure, the components located on the second Z-direction moving module 30, such as the electrical performance testing component 12 and the carrier platform for loading the projection lamp 4, can realize high-low position switching and movement in the up-down direction. The structure of the carrier platform 37 will be described in detail in the following Figure 8 . In a preferred embodiment of the present application, the electrical performance testing component 12 is installed on the rotating support side plate of the carrier platform 36.

[0051] Figure 5The flow chart of the image detection by the detection system of the present application and the generation of the detection report is illustrated. The skilled in the art understands that it is only for the convenience of illustration, because the detection parameters of the present application include many parameter indexes, such as brightness, color (color coordinate, color temperature, etc.), character brightness, threshold brightness, brightness two-dimensional distribution, brightness three-dimensional distribution, chroma, character chroma, color quality, Blactmura, residual image, viewing angle, contrast, etc. First, the image acquisition module is used to acquire the image, and the acquired image is preprocessed by the preprocessing module, such as contour construction, smoothing processing, etc. However, the preprocessed image data is compared, corrected, calculated, determined, etc. by the analysis engine (the pattern contour detection, distortion correction, brightness heat map analysis, uniformity evaluation, chroma coordinate calculation, color tolerance determination are illustrated in the figure), and finally the image defect classification is accurately obtained, so that the image defect product alarm is detected at the same time, and the detection report is generated to guide the subsequent production link.

[0052] Figure 6 The appearance schematic diagram of two different types of measured projection lamps 4 is shown. The skilled in the art understands that the present application can be applied to more types of automobile projection lamps and even other lamps.

[0053] Figure 7 The schematic diagram of the second detection platform when the machine table is opened in the automatic detection system of an automobile projection lamp related to an embodiment of the present application is shown.

[0054] As shown in Figure 7 , the test machine table 1 includes a light projection module and a test module to respectively perform the optical performance test and the electrical performance test of the automobile projection lamp and the movement of the carrier platform. The test module includes an imaging colorimeter detection assembly 11 and a first Z-direction movement module 28, and a support frame 281 for supporting the detection assembly 11. The head of the detection assembly 11 is directed to the top of the test machine table 1 to detect whether the light image projected by the projection lamp 4 (located on the carrier platform 37) to the top of the test machine table 1 meets the requirements, and once it does not meet the requirements, the alarm program is started. Among them, the Figure 7The upper part is a partial enlarged view of the first Z-direction moving module supporting the imaging colorimeter detection assembly 11 in a state. The support frame 281 can enable the detection assembly 11 to rotate around the support frame 281 at a certain angle. The light projection module includes an electrical performance test assembly 12 and a second Z-direction moving module 30, and an X-direction moving module. The second Z-direction moving module carries a carrier platform 37. The electrical performance test assembly is used to detect the electrical performance of the projection lamp 4. The second Z-direction moving module 30 provides the electrical performance test assembly 12 and the carrier platform 37 with movement in the up-down direction and height adjustment, so that the pattern projected by the projection lamp 4 can be completely projected onto the top of the test platform 1. The X-direction moving module provides the second Z-direction moving module with movement along the horizontal X-direction (the movement axis 38 of the X-direction moving module is shown in FIG. 8). Figure 7 The carrier platform 37 can be flipped by 180 degrees around the rotation support bearing 301 of the rotation support side plate 36 of the carrier platform on the second Z-direction moving module 30. This will be described in detail in Figure 8 , so that the light projected by the projection lamp 4 (with the assistance of the X-direction moving module and the second Z-direction moving module) can be almost or completely projected onto the light transmission plate (not shown) installed on the top of the darkroom of the test platform 1, that is, the detection assembly 11 can just capture the pattern projected by the projection lamp. By detecting the test on the test platform 1, the optical performance and electrical performance of the projection lamp 4 can be comprehensively evaluated. Once a defect is detected, a defect detection report is generated and an alarm is given, and the projection lamp 4 is discharged from the track module.

[0055] Figure 8 is an enlarged schematic view of a carrier platform in an automatic detection system of a car projection lamp according to an embodiment of the present application.

[0056] As shown in Figure 8 , the carrier platform 37 includes a rotation support bearing 301 for providing 360-degree rotation of the carrier platform 37 around the bearing 301, a product sensor 40 for sensing whether the projection lamp 4 is installed correctly, a carrier module 41 for carrying and fixing the projection lamp 4, a power supply module 42 for providing power to the projection lamp 4, a 360° rotation module 43 for driving the carrier platform 37 to rotate around the bearing 301 at a specified angle, and an installation platform 36 (see Figure 4A rotating inductor 44 on the mounting frame on the marking) is used to sense the rotation of the carrier platform 37; a combination inductor 45 is used to judge different carriers through different sensing logic to realize the compatibility of various products; a pressing cylinder 46 is used to clamp the projection lamp in the carrier module 41 to avoid loosening during rotation, so as to ensure the accuracy of the detection result. In an embodiment of the present application, the number of the combination inductors is 3, and the three inductors in the combination inductor are marked as a, b and c. When the measured projection lamp is of the first type, the a, b and c inductors will sense according to the first type sensing logic, and the sensing results will be transmitted back to the control system through short-range communication to compile the automatic control program of the automatic monitoring system. Similarly, when the measured projection lamp is of the second type, the a, b and c inductors will sense according to the second type sensing logic, and the sensing results will be transmitted back to the control system through short-range communication to compile the automatic control program of the automatic monitoring system.

[0057] In an embodiment of the present application, an automatic detection method for an automobile projection lamp is also provided, comprising the following steps: S1, placing the automobile projection lamp cover on the annular assembly platform, and automatically feeding by the feeding and discharging assembly; S2, screwing the automobile projection lamp by the screwing assembly; S3, verifying the sealing performance of the tightened automobile projection lamp by the air tightness detection assembly; S4, conveying the automobile projection lamp to the test platform by the conveying assembly, and sequentially performing the electrical performance detection and the optical pattern test; S5, resetting the test platform after the test is completed, and returning the automobile projection lamp to the annular assembly platform by the conveying assembly; S6, automatically laser marking the qualified automobile projection lamp, and alarming and recording the abnormal data of the unqualified automobile projection lamp.

[0058] In another embodiment, the S3 step is omitted to detect the projection lamp which does not need sealing performance verification.

[0059] According to the present application, although the detection is carried out for the automobile projection lamp, it is obvious that the system and method of the present application are suitable for any lamp which needs to be detected by testing a projection pattern. Since the assembly detection is realized on the same assembly machine, it can realize one-stop automatic assembly and functional test of the projection lamp. Since the pattern detection can be realized, the traceability function of the product can also be effectively realized. Since the operation is fully automated, the production efficiency and assembly precision are improved. And through the mode of modularization and combined sensor, more products can be compatible, supporting flexible manufacturing. In another embodiment, a track module can also be added to realize non-stop back and forth shuttling, which can effectively shorten the CT time (i.e. the interval time between two workpiece processing).

[0060] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An automatic detection system for a car projection lamp, characterized in that, The automatic detection system of the automobile projection lamp comprises a testing machine and an assembling machine connected side by side; The testing machine is provided with a testing platform, and the assembling machine comprises a ring-shaped assembling platform; The projection lamp loaded on the vehicle platform which completes testing on the testing platform is moved to the ring-shaped assembling platform under the conveying of a moving module; The ring-shaped assembling platform is provided with feeding and discharging assemblies, tool carriers, a laser marking machine and a screw tightening assembly around the periphery; The testing platform comprises an imaging colorimeter detection assembly, an electrical performance testing assembly and a moving module; the moving module provides moving support.

2. The automatic detection system of a car projection lamp according to claim 1, characterized in that, The imaging colorimeter detection assembly serves as a testing module to project detection light to the top of the machine to detect various parameters of the measured projection lamp, including but not limited to brightness, color, character brightness, threshold brightness, two-dimensional distribution of brightness, three-dimensional distribution of brightness, color, character color, color quality, Blactmura, residual image, viewing angle and contrast.

3. The automatic detection system of a car projection lamp according to claim 1 or 2, characterized in that, The electrical performance testing assembly is installed in the light projection module to detect various electrical performances of the measured projection lamp.

4. The automatic detection system of a car projection lamp according to claim 3, characterized in that, The tool carrier comprises a fixing seat and a placing groove for positioning the measured projection lamp in the placing groove of the fixing seat during assembly and detection.

5. The automatic detection system of a car projection lamp according to claim 3, characterized in that, The air tightness detection assembly is used for air tightness detection of the measured projection lamp.

6. The automatic detection system of a car projection lamp according to claim 3, characterized in that, The laser marking machine is used for marking on the projection lamp which passes the detection.

7. The automatic detection system of a car projection lamp according to claim 3, characterized in that, The screw tightening assembly is used for screw fastening of the projection lamp.

8. The automatic detection system of a car projection lamp according to claim 3, characterized in that, The light projection module comprises a vehicle platform for receiving the measured projection lamp conveyed to the testing platform to perform optical performance testing and electrical performance testing.

9. The automatic detection system of a car projection lamp according to claim 8, wherein, The vehicle platform is installed with a product inductor for inducting the measured product, a vehicle module for receiving the measured projection lamp in the vehicle module, a power supply module for providing power to the measured projection lamp, a 360° rotation module for providing rotation to the vehicle platform, and a rotation inductor for inducting the rotation of the vehicle platform.

10. An automatic detection method of an automobile projection lamp, comprising the following steps: S1, placing a cover of the automobile projection lamp on a ring-shaped assembling platform to automatically feed by a feeding and discharging assembly; S2, screw fastening of the automobile projection lamp by a screw tightening assembly; S3, sealing performance verification of the fastened automobile projection lamp by an air tightness detection assembly; S4, conveying of the automobile projection lamp to a testing platform by a conveying assembly to sequentially perform electrical performance detection and optical pattern testing; S5, resetting of the testing platform after testing, and returning of the automobile projection lamp to the ring-shaped assembling platform by the conveying assembly; S6, automatic laser marking of the qualified automobile projection lamp, and alarming of the unqualified automobile projection lamp and recording of abnormal data.

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