An automobile camera test card automatic switching device

Abstract

This invention provides an automatic switching device for automotive camera test cards, comprising a frame with several card slots, several mounting frames containing test cards, a moving frame, a translation mechanism, a lifting frame, a lifting mechanism, a cleaning frame, and a lifting mechanism. The cleaning frame is equipped with an upper support with a dry wiping component and a lower support with a spray cleaning component and a drive mechanism, and is provided with an adjustment mechanism to adjust the positions of the two components. Through the cooperation of the moving frame, translation mechanism, lifting frame, and lifting mechanism, the lifting frame can be driven to move to any mounting frame and lift the mounting frame along with the test cards, realizing automatic switching of test cards and improving testing efficiency. Through the adjustment mechanism in conjunction with the lifting mechanism and drive mechanism, the dry wiping cleaning mode and the spray cleaning mode can be switched to maintain the cleanliness of the test card surface, improve the accuracy of testing, and reduce the labor consumption of manual cleaning.

Description

Technical Field

[0001] This invention relates to the field of automotive camera testing technology, and more specifically to an automatic switching device for automotive camera test cards. Background Technology

[0002] In-vehicle cameras are crucial devices for improving driving safety and convenience, primarily used for environmental perception, driver assistance, accident recording, and in-vehicle monitoring. To ensure the performance of in-vehicle cameras, they require numerous tests. During camera testing, test templates are often used, maintaining a set distance between the camera and the template. The images captured by the camera are then analyzed. Current test templates typically consist of a template body and an outer transparent acrylic panel, protecting the template while enhancing its durability. In conventional testing, positioning the calibration map is difficult. To address this issue, CN219287616U discloses a camera calibration map movement mechanism. This mechanism uses a profile frame to fix the map's position. After fixing the map, it connects to the calibration equipment via guide components, facilitating map replacement during calibration scene changes. When the protruding partitions on the guide rail surface engage with the gaps between guide shoes, the guide components can move along the guide rail direction, facilitating map movement control. The guide rail has graduations along its extension direction, allowing the map to move directionally and at a fixed distance, combining map positioning and map switching capabilities. However, replacing the map requires workers to use tools to tighten bolts, a time-consuming and labor-intensive process that reduces testing efficiency. Furthermore, after a period of use, dust easily accumulates on the transparent acrylic sheet outside the map, affecting test results and requiring frequent manual cleaning after shutdown, a time-consuming and inconvenient process. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing an automatic switching device for automotive camera test cards, thereby resolving the problems described above.

[0004] This invention provides an automatic switching device for automotive camera test cards, comprising: The frame has several slots spaced apart, and a mounting bracket is inserted into each slot. Each mounting bracket is equipped with a different type of drawing card, and each mounting bracket has protrusions on both sides. A movable frame is mounted on the frame in the front-to-back direction. The frame is provided with a translation mechanism that drives the movable frame to move. Lifting frames that move in the vertical direction are provided on both the left and right sides of the movable frame. The two lifting frames are used to lift two protrusions on both sides of the same mounting frame. The movable frame is provided with a lifting mechanism that drives the lifting frames to rise and fall. A cleaning rack is vertically movable on a frame. The frame is equipped with a lifting mechanism that drives the cleaning rack to move vertically. The cleaning rack has an upper support and a lower support that move in a front-back direction, and is equipped with an adjustment mechanism for adjusting the positions of the upper and lower supports. The upper support has a plurality of first crossbars, which are arranged alternately with a plurality of diagrams. Each first crossbar is equipped with a dry wiping component. The lower support has a plurality of second crossbars, each of which is equipped with a spray cleaning component. The lower support is equipped with a drive mechanism for adjusting the working state of the plurality of spray cleaning components.

[0005] In some embodiments, the frame is provided with a horizontal guide rail extending in the front-back direction, and the translation mechanism is a first electric slide table. The first electric slide table is movably disposed at the horizontal guide rail, and the first electric slide table is connected to the movable frame and drives the movable frame to move back and forth relative to the frame.

[0006] In some embodiments, the movable frame is provided with a vertical guide rail extending in a vertical direction, and the lifting mechanism is a second electric slide table. The second electric slide table is movably disposed at the vertical guide rail, and the second electric slide table is connected to the lifting frame and drives the lifting frame to move up and down relative to the frame.

[0007] In some embodiments, the frame is provided with a track for the cleaning rack to be moved and installed in a vertical direction, and the lifting mechanism is a third electric slide. The third electric slide is movably disposed at the track, and the third electric slide is connected to the cleaning rack and drives the cleaning rack to move up and down relative to the frame.

[0008] In some embodiments, the lifting frame is provided with a limiting groove for the protrusion to move into, the protrusion being a rectangular block structure and the limiting groove being a rectangular groove structure.

[0009] In some embodiments, the dry rubbing assembly is a tampon.

[0010] In some embodiments, the adjustment mechanism includes a drive cylinder, a first rack, a second rack, and a plurality of gears. The plurality of gears are rotatably mounted on the cleaning frame. The first rack is disposed on the upper support and extends along the front-rear direction of the upper support. The second rack is disposed on the lower support and extends along the front-rear direction of the lower support. The first rack and the second rack mesh with the plurality of gears from the upper and lower sides, respectively. The drive cylinder is disposed on the cleaning frame and is connected to the upper support, driving the upper support to move back and forth.

[0011] In some embodiments, the spray cleaning assembly includes a spray frame, a piston cylinder, and a reservoir containing cleaning fluid. The spray frame is movably mounted on the second crossbar in a left-right direction. The spray frame has a plurality of nozzles and a plurality of scrapers arranged in an alternating manner. One end of each piston cylinder is connected to a supply pipe and a connecting pipe, and the other end of each piston cylinder has a piston rod that extends out of its inner cavity. Both the connecting pipe and the supply pipe are equipped with one-way valves. The supply pipe is connected to a plurality of the nozzles, and the connecting pipe is connected to the reservoir. The piston cylinder is connected to the second crossbar, and the piston rod is connected to the spray frame. The drive mechanism is connected to a plurality of the spray frames and drives the spray frames to move.

[0012] In some embodiments, the driving mechanism is an electric telescopic rod, which is located on the lower support. The output end of the electric telescopic rod is provided with a connecting frame that is connected to a plurality of spray frames. The electric telescopic rod drives the connecting frame to move the plurality of spray frames left and right relative to a plurality of second crossbars.

[0013] In some embodiments, the scraper is a rubber strip.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The translation mechanism drives the moving frame to move the lifting frame to the designated mounting position. The lifting mechanism then raises the lifting frame, lifting the protrusions on both sides of the mounting frame to lift it up. Subsequently, the translation mechanism drives the moving frame to move the lifting frame and the image card to the front position for camera testing. When image card switching is required, the translation mechanism, in conjunction with the lifting mechanism, moves the current mounting frame back to its original position and lifts and moves the other mounting frame to the position for shooting, thus achieving automatic image card switching and improving testing efficiency.

[0015] 2. The adjustment mechanism allows for adjustment of the relative positions of the upper and lower supports to the cleaning frame, enabling switching between dry wiping and spray cleaning modes. When dry wiping is required to remove dust from the map card, the adjustment mechanism moves the upper support closer to the map card and the lower support further away. Several dry wiping components on the first crossbar of the upper support abut against each map card. Then, the lifting mechanism is activated, driving the cleaning frame to move the dry wiping components to perform dry wiping cleaning on the map card. When spray cleaning is required, the adjustment mechanism moves the lower support closer to the map card and the upper support further away. Then, the drive mechanism activates each spray cleaning component, coordinating with the lifting mechanism to move the cleaning frame up and down to perform spray cleaning on each map card. This helps maintain the cleanliness of the map card surface and improves the accuracy of camera testing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a structure according to one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the moving frame and the lifting frame in a certain embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the mounting frame, cleaning frame, upper support, and lower support in a certain embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the cleaning rack, upper support, lower support and spray cleaning component in a certain embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the adjustment mechanism in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the lower support in one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the nozzle and scraper at the lower support in one embodiment of the present invention; Figure 8 This is a schematic diagram of the upper support structure in one embodiment of the present invention.

[0018] In the diagram, 1-frame; 11-slot; 12-horizontal guide rail; 13-track; 2-mounting bracket; 21-graphics card; 22-protrusion; 3-moving frame; 31-translation mechanism; 4-lifting frame; 41-lifting mechanism; 42-limiting groove; 5-cleaning frame; 51-lifting mechanism; 6-upper support; 61-first crossbar; 62-dry wiping assembly; 7-lower support; 71-second crossbar; 8-adjustment mechanism; 81-drive cylinder; 82-first rack; 83-second rack; 84-gear; 9-spray cleaning assembly; 91-spray frame; 911-nozzle; 912-scraper; 92-piston cylinder; 921-liquid supply pipe; 922-connecting pipe; 93-piston rod; 94-liquid storage tank; 10-drive mechanism; 101-connecting frame. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. In the following description, the expression "some embodiments" describes a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0020] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0021] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0022] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0023] Example 1: Reference Figures 1 to 8 This invention provides an automatic switching device for automotive camera test cards, comprising: The frame 1 has several slots 11 arranged at intervals. Each slot 11 has a mounting bracket 2 inserted into it. Each mounting bracket 2 has a different type of drawing card 21 installed on it. Each mounting bracket 2 has protrusions 22 on both sides. The movable frame 3 is mounted on the frame 1 and moves in the front-to-back direction. The frame 1 is equipped with a translation mechanism 31 that drives the movable frame 3 to move. The movable frame 3 is equipped with lifting frames 4 that move in the vertical direction on both the left and right sides. The two lifting frames 4 are used to lift the two protrusions 22 on both sides of the same mounting frame 2. The movable frame 3 is equipped with a lifting mechanism 41 that drives the lifting frames 4 to rise and fall. The cleaning rack 5 is vertically mounted on the frame 1. The frame 1 is equipped with a lifting mechanism 51 that drives the cleaning rack 5 to move vertically. The cleaning rack 5 is equipped with an upper support 6 and a lower support 7 that move in the front-back direction, and is equipped with an adjustment mechanism 8 that adjusts the position of the upper support 6 and the lower support 7. The upper support 6 is equipped with several first crossbars 61, which are arranged alternately with several diagram cards 21. Each first crossbar 61 is equipped with a dry wiping component 62. The lower support 7 is equipped with several second crossbars 71, each second crossbar 71 is equipped with a spray cleaning component 9, and the lower support 7 is equipped with a drive mechanism 10 that adjusts the working state of the spray cleaning components 9.

[0024] The translation mechanism 31 drives the moving frame 3 to move the lifting frame 4 to the designated position of the mounting frame 2. The lifting mechanism 41 then drives the lifting frame 4 to lift. During the lifting process, the two lifting frames 4 raise the protrusions 22 on both sides of the mounting frame 2, thereby lifting the mounting frame 2. Subsequently, the translation mechanism 31 drives the moving frame 3 to move the lifting frame 4 and the image card 21 to the front position for camera testing. When it is necessary to switch the image card 21, the translation mechanism 31, in conjunction with the lifting mechanism 51, moves the current mounting frame 2 back to its original position and lifts and moves the other mounting frame 2 to the position for camera testing. This enables automatic switching of the image card 21 and improves testing efficiency.

[0025] The adjusting mechanism 8 allows for adjustment of the relative positions of the upper support 6 and the lower support 7 to the cleaning frame 5, enabling switching between dry wiping and spray cleaning modes. When dry wiping is required to remove dust from the card 21, the adjusting mechanism 8 moves the upper support 6 closer to the card 21 and the lower support 7 away from the card 21. Several dry wiping components 62 on the first crossbars 61 of the upper support 6 abut against each card 21. Then, the lifting mechanism 51 is activated, causing the cleaning frame 5 to move the several dry wiping components 62 to perform dry wiping cleaning on the card 21. The dry wiping components 62 can be adjusted... 2. Move to abut against the upper end of the card 21 and close the lifting structure. Each time the card 21 is raised for use, the dry wiping component 62 can wipe and clean the raised card 21 immediately. When the card 21 needs to be sprayed for cleaning, the adjusting mechanism 8 drives the lower support 7 closer to the card 21 and drives the upper support 6 away from the card 21. Then, the driving mechanism 10 starts each spray cleaning component 9 and, together with the lifting mechanism 51, drives the lifting process of the cleaning frame 5 to spray and clean each card 21, which helps to maintain the cleanliness of the card 21 surface and improve the accuracy of camera testing.

[0026] It should be noted that the graphic card 21 used in this application is mounted on a transparent acrylic sheet, and the aforementioned dry wiping and spray cleaning processes are mainly for cleaning the transparent acrylic sheet on the outside of the graphic card 21. In addition, the frame 1 of this application is equipped with a control panel for controlling various electrical devices. The control panel includes a touch screen, an STM32 microcontroller, and a PLC circuit board. The frame 1 is also equipped with a power module with a power cord plug for supplying power to each electrical device. Using a wired power module and control panel to supply power to and control the operating status of the electrical devices is a conventional technical method and will not be elaborated upon in this application.

[0027] Additionally, it should be noted that dry cleaning is primarily for temporary dust removal from the outer transparent acrylic panel of the graphic card 21. The dry cleaning component 62 can be moved to contact the upper part of the graphic card 21, and the lifting structure can be closed. Each time the graphic card 21 is raised for use, the dry cleaning component 62 can immediately wipe and clean the raised graphic card 21. It features short cleaning time and can be performed when the surface of the graphic card 21 is lightly contaminated and under normal use conditions. Spray cleaning, on the other hand, sprays a cleaning solution to soften stubborn substances on the transparent acrylic panel and scrapes them off. It features longer cleaning time and better cleaning effect and can be performed when the surface of the graphic card 21 is heavily contaminated and the equipment is in standby or off-peak use. The cleaning solution can be glass cleaner, a technology already in use.

[0028] Specifically, the frame 1 is provided with a horizontal guide rail 12 extending in the front-to-back direction, and the translation mechanism 31 is a first electric slide. The first electric slide is moved at the horizontal guide rail 12. The first electric slide is connected to the movable frame 3 and drives the movable frame 3 to move back and forth relative to the frame 1.

[0029] Specifically, the movable frame 3 is provided with a vertical guide rail extending in the vertical direction, and the lifting mechanism 41 is a second electric slide. The second electric slide is moved at the vertical guide rail. The second electric slide is connected to the lifting frame 4 and drives the lifting frame 4 to move up and down relative to the frame 1.

[0030] Specifically, the frame 1 is provided with a track 13 for the cleaning rack 5 to move and be installed in the vertical direction. The lifting mechanism 51 is a third electric slide. The third electric slide is located at the track 13. The third electric slide is connected to the cleaning rack 5 and drives the cleaning rack 5 to move up and down relative to the frame 1.

[0031] It should be noted that the electric slide table is a well-known technology in the prior art, in which a motor drives a lead screw to move the slide table along the slide rail. Using an electric slide table in combination with a slide rail structure to realize the electric drive movement of each frame is a conventional technical means, and will not be described in detail in this application.

[0032] Example 2: Reference Figures 1 to 8 In conjunction with the technical solution of Embodiment 1, in this embodiment, the lifting frame 4 is provided with a limiting groove 42 for the protrusion 22 to move into. The protrusion 22 is a rectangular block structure, and the limiting groove 42 is a rectangular groove structure. The protrusion 22 is inserted into and fits against the periphery of the rectangular groove, that is, the protrusion 22 is positioned by the limiting groove 42, which prevents the mounting frame 2 from shifting or rotating relative to the lifting frame 4 during the lifting process, thus facilitating the stable operation of the drawing card 21 switching.

[0033] Specifically, the dry wiping component 62 is a cotton swab. The cotton swabs at each of the first crossbars 61 can be used to wipe and clean the surface of each card 21.

[0034] It should be noted that in some embodiments, double-sided tape is attached to the back of the tampon, allowing the tampon to be detachably mounted on the first crossbar 61 via the double-sided tape, facilitating replacement as needed. Furthermore, when replacing the tampon, the corresponding pattern card 21 can be lifted and removed using the translation mechanism 31 and the lifting mechanism 41, facilitating the replacement operation. The pattern card 21 has several pre-drilled screw holes on its back, and the mounting bracket 2 has several mounting holes, allowing screws to pass through the mounting holes and connect via threads, thus detachably mounting the pattern card 21 onto the mounting bracket 2.

[0035] In other embodiments, the tampons are attached to the first crossbar 61 using Velcro, allowing the tampons to be replaced as needed.

[0036] Example 3: Reference Figures 1 to 8 In conjunction with the technical solutions of Embodiments 1 and 2, in this embodiment, the adjustment mechanism 8 includes a drive cylinder 81, a first rack 82, a second rack 83, and several gears 84. The several gears 84 are rotatably mounted on the cleaning frame 5. The first rack 82 is located on the upper support 6 and extends along the front-back direction of the upper support 6. The second rack 83 is located on the lower support 7 and extends along the front-back direction of the lower support 7. The first rack 82 and the second rack 83 mesh with the several gears 84 from the upper and lower sides, respectively. The drive cylinder 81 is located on the cleaning frame 5 and is connected to the upper support 6, driving the upper support 6 to move back and forth.

[0037] When dry wiping cleaning is required, the drive cylinder 81 drives the upper bracket 6 to move the first rack 82 to the rear of the frame 1, so that several dry wiping components 62 approach and abut against each card 21. During the rearward movement of the first rack 82, the transmission action of several gears 84 drives the second rack 83 to move forward of the frame 1. The second rack 83 drives the lower bracket 7 to move, so that several spray cleaning components 9 move away from each card 21. Then, in conjunction with the lifting mechanism 51, the cleaning frame 5 drives the dry wiping components 62 to move vertically to perform dry wiping cleaning of the cards 21; when spray cleaning is required... During operation, the drive cylinder 81 drives the upper bracket 6 to move the first rack 82 forward of the frame 1, thereby driving several dry wiping components 62 away from each card 21. As the first rack 82 moves forward, it drives the second rack 83 to move backward of the frame 1 through the transmission action of several gears 84. The second rack 83 drives the lower bracket 7 to move, thereby driving several spray cleaning components 9 to approach and abut against each card 21. Subsequently, it can cooperate with the lifting mechanism 51 to drive the cleaning frame 5 to move the spray cleaning components 9 up and down, and cooperate with the drive structure to start the spray cleaning components 9 to perform spray cleaning work. It should be noted that when cleaning the card 21 is not required, the drive cylinder 81 drives the upper bracket 6 to move the first rack 82 forward towards the frame 1. During the forward movement of the first rack 82, the transmission action of the several gears 84 drives the second rack 83 to move backward. When the second rack 83 moves the lower bracket 7 to a certain distance between the several spray cleaning components 9 and the card 21, the drive cylinder 81 stops working. At this time, there is a distance between the dry wiping component 62 and the spray cleaning component 9 and the card 21, and the equipment does not perform cleaning work on the card 21.

[0038] Example 4: Reference Figures 1 to 8 In conjunction with the technical solutions of embodiments 1-3, in this embodiment, the spray cleaning component 9 includes a spray frame 91, a piston cylinder 92, and a liquid storage tank 94 containing cleaning fluid. The spray frame 91 is movably mounted on the second crossbar 71 in the left-right direction. The spray frame 91 is provided with a plurality of nozzles 911 and a plurality of scrapers 912 arranged in an alternating manner. One end of each piston cylinder 92 is respectively connected to a liquid supply pipe 921 and a connecting pipe 922. The other end of each piston cylinder 92 is provided with a piston rod 93 that moves out of its inner cavity. Both the connecting pipe 922 and the liquid supply pipe 921 are provided with one-way valves. The liquid supply pipe 921 is respectively connected to a plurality of nozzles 911, and the connecting pipe 922 is connected to the liquid storage tank 94. The piston cylinder 92 is connected to the second crossbar 71, and the piston rod 93 is connected to the spray frame 91. The drive mechanism 10 is connected to a plurality of spray frames 91 and drives the spray frames 91 to move.

[0039] It should be noted that the one-way valve at the connecting pipe 922 is configured to allow liquid to flow only from the connecting pipe 922 to the inner cavity of the piston cylinder 92; the one-way valve at the supply pipe 921 is configured to allow liquid to flow only from the piston cylinder 92 to the supply pipe 921; both the supply pipe 921 and the connecting pipe 922 are flexible hoses.

[0040] During spray cleaning, the drive mechanism 10 drives several spray frames 91 to reciprocate in the left-right direction. When the spray frame 91 moves to one side to drive each piston rod 93 to retract into the corresponding piston cylinder 92, the piston disc at the end of the piston rod 93 squeezes the inner cavity of the piston cylinder 92 connected to the liquid supply pipe 921 and the connecting pipe 922. At this time, the one-way valve at the liquid supply pipe 921 opens and the one-way valve at the connecting pipe 922 closes. The cleaning fluid inside each piston cylinder 92 flows to each nozzle 911 through the corresponding liquid supply pipe 921. The system sprays out cleaning fluid. When the spray frame 91 moves to the other side, causing each piston rod 93 to extend out of the corresponding piston cylinder 92, the inner cavity of the piston cylinder 92 connected to the supply pipe 921 and the connecting pipe 922 expands. At this time, the one-way valve at the supply pipe 921 closes, while the one-way valve at the connecting pipe 922 opens. Under negative pressure, the cleaning fluid in the storage tank 94 flows to the piston cylinder 92 through the connecting pipe 922, replenishing the cleaning fluid for the next spray operation. The scraper 912 scrapes slag as the spray frame 91 moves back and forth. Based on the above spray operation, the lifting mechanism 51 drives the cleaning frame 5 to move the spray assembly up and down to perform spray cleaning at various height positions on the card 21.

[0041] In some embodiments, a plurality of scraper blades 912 are respectively installed on one side of a plurality of nozzles 911. The interval between any two scraper blades 912 on the same spray frame 91 and the interval between any two adjacent nozzles 911 are the same as the distance of a single stroke of the spray frame 91. The piston rod 93 is located on the right side of the piston cylinder 92, and the scraper blades 912 are located on the left side of the nozzles 911. With this structural design, when the piston rod 93 moves to the left to perform the squeezing spray operation, the nozzles 911 spray out cleaning fluid. Since the scraper blades 912 are located on the left side of the nozzles 911, the cleaning fluid is not scraped off temporarily, which is conducive to the cleaning fluid fully covering and softening the stains. When the piston rod 93 moves to the right to perform the extended replenishment operation, the scraper blades 912 move to the right and scrape off the cleaning fluid.

[0042] In some embodiments, the nozzle 911 has a flat opening structure in the vertical direction, and the length of the flat opening is the same as the length of the scraper 912.

[0043] In some embodiments, the liquid storage tank 94 is completely transparent and has an inlet for injecting cleaning fluid. The inlet is covered with a cap, allowing direct observation of the liquid level inside the liquid storage tank 94. The cap can be removed as needed to replenish the cleaning fluid.

[0044] Specifically, the drive mechanism 10 is an electric telescopic rod, which is located on the lower support 7. The output end of the electric telescopic rod is provided with a connecting frame 101 that is connected to several spray frames 91. The electric telescopic rod drives the connecting frame 101 to move several spray frames 91 left and right relative to several second crossbars 71.

[0045] It should be noted that in some embodiments, the number of electric telescopic rods may be set to two or more, and an installation plate for installing the electric telescopic rod is connected between two adjacent second crossbars 71.

[0046] During spray cleaning, the electric telescopic rod drives several spray frames 91 to move back and forth in the left and right direction. When the spray frame 91 moves to one side to drive each piston rod 93 to retract into the corresponding piston cylinder 92, the piston disc at the end of the piston rod 93 squeezes the inner cavity of the piston cylinder 92 connected to the liquid supply pipe 921 and the connecting pipe 922. At this time, the one-way valve at the liquid supply pipe 921 opens and the one-way valve at the connecting pipe 922 closes. The cleaning fluid inside each piston cylinder 92 flows to each nozzle 911 through the corresponding liquid supply pipe 921. The system sprays out cleaning fluid. When the spray frame 91 moves to the other side to drive each piston rod 93 to extend out of the corresponding piston cylinder 92, the inner cavity of the piston cylinder 92 connected to the supply pipe 921 and the connecting pipe 922 expands. At this time, the one-way valve at the supply pipe 921 closes, while the one-way valve at the connecting pipe 922 opens. Under negative pressure, the cleaning fluid in the storage tank 94 flows to the piston cylinder 92 through the connecting pipe 922 to replenish the cleaning fluid for the next spray operation. The scraper 912 scrapes slag as it moves back and forth with the spray frame 91. Using an electric telescopic rod to achieve the telescopic reciprocating motion is a conventional technical means and will not be described in detail in this application.

[0047] In some embodiments, the number of electrically operated telescopic poles can be multiple.

[0048] Specifically, the scraper 912 is a rubber strip. Using a rubber strip to remove water stains from glass or mirror surfaces is a conventional technique and will not be elaborated upon in this application.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. An automatic switching device for automotive camera test cards, characterized in that, include: The frame has several slots spaced apart, and a mounting bracket is inserted into each slot. Each mounting bracket is equipped with a different type of drawing card, and each mounting bracket has protrusions on both sides. A movable frame is mounted on the frame in the front-to-back direction. The frame is provided with a translation mechanism that drives the movable frame to move. Lifting frames that move in the vertical direction are provided on both the left and right sides of the movable frame. The two lifting frames are used to lift two protrusions on both sides of the same mounting frame. The movable frame is provided with a lifting mechanism that drives the lifting frames to rise and fall. A cleaning rack is vertically movable on a frame. The frame is equipped with a lifting mechanism that drives the cleaning rack to move vertically. The cleaning rack has an upper support and a lower support that move in a front-back direction, and is equipped with an adjustment mechanism for adjusting the positions of the upper and lower supports. The upper support has a plurality of first crossbars, which are arranged alternately with a plurality of diagrams. Each first crossbar is equipped with a dry wiping component. The lower support has a plurality of second crossbars, each of which is equipped with a spray cleaning component. The lower support is equipped with a drive mechanism for adjusting the working state of the plurality of spray cleaning components.

2. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The frame is provided with a horizontal guide rail extending in the front-to-back direction. The translation mechanism is a first electric slide table. The first electric slide table is movably disposed at the horizontal guide rail. The first electric slide table is connected to the movable frame and drives the movable frame to move back and forth relative to the frame.

3. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The movable frame is equipped with a vertical guide rail extending in the vertical direction. The lifting mechanism is a second electric slide table, which is movably mounted on the vertical guide rail. The second electric slide table is connected to the lifting frame and drives the lifting frame to move up and down relative to the machine frame.

4. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The frame is provided with a track for the cleaning rack to move and be installed in a vertical direction. The lifting mechanism is a third electric slide, which is movably mounted on the track. The third electric slide is connected to the cleaning rack and drives the cleaning rack to move up and down relative to the frame.

5. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The lifting frame is provided with a limiting groove for the protrusion to move into. The protrusion is a rectangular block structure, and the limiting groove is a rectangular groove structure.

6. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The dry rubbing component is a cotton swab.

7. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The adjustment mechanism includes a drive cylinder, a first rack, a second rack, and several gears. The several gears are rotatably mounted on the cleaning frame. The first rack is located on the upper support and extends along the front-rear direction of the upper support. The second rack is located on the lower support and extends along the front-rear direction of the lower support. The first rack and the second rack mesh with the several gears from the upper and lower sides, respectively. The drive cylinder is located on the cleaning frame and is connected to the upper support, driving the upper support to move back and forth.

8. The automatic switching device for automotive camera test cards according to claim 1, characterized in that, The spray cleaning assembly includes a spray frame, a piston cylinder, and a storage tank containing cleaning fluid. The spray frame is movable along the second crossbar in a left-right direction. The spray frame has several nozzles and several scrapers arranged in an alternating manner. One end of each piston cylinder is connected to a supply pipe and a connecting pipe, and the other end of each piston cylinder has a piston rod that extends out of its inner cavity. Both the connecting pipe and the supply pipe are equipped with one-way valves. The supply pipe is connected to several nozzles, and the connecting pipe is connected to the storage tank. The piston cylinder is connected to the second crossbar, and the piston rod is connected to the spray frame. The drive mechanism is connected to several spray frames and drives the spray frames to move.

9. An automatic switching device for automotive camera test cards according to claim 8, characterized in that, The driving mechanism is an electric telescopic rod, which is located on the lower support. The output end of the electric telescopic rod is provided with a connecting frame that is connected to several spray frames. The electric telescopic rod drives the connecting frame to move several spray frames left and right relative to several second crossbars.

10. An automatic switching device for automotive camera test cards according to claim 8, characterized in that, The scraper is a rubber strip.

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