48 results about "Security printing" patented technology

The invention discloses an anti-counterfeit printing detection device for a wine packaging box, and relates to the field of anti-counterfeit printing detection devices.The anti-counterfeit printing detection device comprises a detection rack, a conveying belt and two mounting frames are mounted on the detection rack, and a detection scanner is movably mounted on one mounting frame; the system further comprises a bearing positioning mechanism and a scanner automatic cleaning device. It needs to be explained that the position of the packaging box is corrected through the two arc-shaped positioning clamping plates, the weight of the packaging box is detected through the bearing rotating plate, and the problem that wine in the packaging box is lost due to evaporation or breakage is solved; dust collection and cleaning are performed on the surface of the packaging box through a plurality of dust collection heads, so that the cleanliness of the packaging box is ensured, and the detection accuracy is further ensured; besides, the detection scanner moves to drive the protection sliding plate to move, and the protection sliding plate continuously moves, so that the extrusion sliding strip scrapes and cleans the detection scanner through the cleaning scraping strip, the cleanliness of the detection scanner is ensured, and the accuracy of the detection effect is further ensured.

The invention relates to a finishing method and a finishing device for an intaglio printing roller for anti-counterfeit printing. The trimming method comprises the following steps that (1) wax filler is arranged on one side or two sides of the ink cell position needing anti-counterfeiting, the wax filler is used for blocking the ink cell on the corresponding side, and the ink cell section on one side of the wax filler or the ink cell section between two pieces of wax filler forms a trimming section; and (2) spraying an anti-corrosion wax layer into the finishing section in the step (1). And (3) a wax suction pipe with a heating wire at the end extends into the finishing section in the step (2), the heating wire melts the wax layer on the bottom wall of the finishing section, and the melted wax liquid is sucked away through the wax suction pipe. And (4) corrosive liquid is injected into the finishing section in the step (3) so as to corrode the bottom wall of the finishing section. And (5) after corrosion is conducted for a set time, hot water with the temperature being 50 DEG C or above is adopted for flushing the intaglio printing roller so as to clean wax filler and a wax layer on the intaglio printing roller. Ink cells of patterns on the printing roller can be trimmed, and a better anti-fake effect is achieved.

The invention discloses an anti-counterfeiting printed matter preparation and identification method and system based on halftone frequency compensation, and the method comprises the steps: determining the compensation frequency of an embedded texture needed to be embedded into an original digital image according to the frequency of macroscopic moire patterns induced when an input anti-counterfeiting printed matter is copied; designing an embedded texture based on halftone frequency compensation according to the compensation frequency, and generating a digital image hidden with the embedded texture; and outputting the digital image hidden with the embedded texture to a printing material through printing equipment to obtain an anti-counterfeiting printed matter. The invention aims to utilize the active induction mechanism of the moire to actively induce the moire characteristics excited in the frequency domain and the micro texture at the moment of imaging of the copy, the discrimination of the copy is converted from searching a weak signal to detecting significant interference, and the stability of anti-counterfeiting printed matter discrimination in the application scene of complex media and cross-brand equipment is improved.

The invention relates to the technical field of anti-counterfeit printing, in particular to a multi-parameter variable-sequence three-dimensional encrypted binary anti-counterfeit printing method, which comprises the following steps of: analyzing pixel information of an original printing image, and decomposing the pixel information into three independent dimensional components of space, brightness and texture; each component is mapped with an encryption parameter library formed by associated dynamically adjustable encryption elements, and differential processing of position disorder, brightness migration and texture weaving is performed on each component; and synchronizing each component and calculating a global synchronization factor, updating the encryption parameter library by using the factor in a collaborative variable sequence manner, and carrying out secondary encryption on each component based on the updated parameter library to generate a final anti-counterfeiting coding sequence. According to the method, encryption pertinence, diversity and concealment are enhanced, reverse cracking is avoided, uniqueness and non-replicability of anti-counterfeiting codes are improved, anti-counterfeiting capability is enhanced, and the method is adaptive to anti-counterfeiting printing of high-end products.

The invention discloses an invisible anti-counterfeiting method based on a printing dot structure, electronic equipment and a storage medium. The method comprises the following steps: acquiring a first image of an anti-counterfeiting mark of a to-be-verified product; performing identification processing on the first image, and confirming a first verification area and a second verification area of the anti-counterfeiting mark; obtaining a first grid structure of the first verification area and a second grid structure of the second verification area according to the first image; and determining an authenticity identification result of the to-be-verified product according to the first grid structure and the second grid structure. The printing steps of the anti-counterfeiting mark are as follows: acquiring a preset standard image; based on a preset partitioning strategy, determining a first printing area and a second printing area in the standard image; and controlling a spot color printing module in the invisible anti-counterfeit printing equipment to print based on the first printing area of the standard image, and controlling a color-colliding printing module in the invisible anti-counterfeit printing equipment to print based on the second printing area of the standard image to obtain the anti-counterfeit mark.

This utility model relates to the field of woven bag technology and discloses a double-sided printed anti-counterfeiting woven bag structure, including a bag body, a sealing rope, an anti-counterfeiting code, and elastic support strips. The bag body, from the outside to the inside, includes an outer waterproof layer, a woven fabric layer, an inner waterproof layer, and an inner lining layer, and both sides of the bag body are covered with an anti-counterfeiting printed coating. A rope hole is provided at the top of the bag body, through which the sealing rope passes. The anti-counterfeiting code is printed on the outer surface of the bag. The elastic support strips are symmetrically arranged and located on the bottom of the bag body opposite the inner wall. The anti-counterfeiting printed coating and anti-counterfeiting code effectively improve the anti-counterfeiting performance of the woven bag, enhancing product security and brand trust. Simultaneously, the design of the outer and inner waterproof layers gives the woven bag excellent waterproof performance, better protecting the packaged goods from moisture.

The utility model discloses ink anti-counterfeiting printing equipment which comprises a bottom plate and a printing equipment body, the top of the bottom plate is fixedly connected with a fixing frame, the inner wall of the top of the fixing frame is fixedly connected with two springs, a supporting frame is fixedly connected between the two springs, and the inner wall of the top of the supporting frame is fixedly connected with a fixing plate. A connecting roller is movably connected into the fixing plate, an adhesive roller is arranged on the outer side of the connecting roller, detachable clamping assemblies are arranged at the two ends of the adhesive roller, a connecting pipe is movably connected to the inner wall of one side of the supporting frame, and a plurality of nozzles are fixedly communicated to one side of the connecting pipe; a power assembly for driving the connecting roller to rotate and driving the connecting pipe to swing is arranged on one side of the supporting frame, and a supporting roller is movably connected to the inner wall of one side of the fixing frame. According to the lottery ticket sticking roller cleaning device, lottery tickets can be subjected to double cleaning, meanwhile, a worker can conveniently clean and replace the sticking roller, and the lottery ticket sticking roller cleaning device can adapt to lottery ticket paper with different thicknesses.

The utility model discloses an anti-counterfeiting adhesive sticker, and relates to the technical field of adhesive stickers. The adhesive sticker comprises an adhesive sticker body, the adhesive sticker body comprises two substrates, an accommodating gap is formed between the two substrates, and an anti-counterfeiting printing plate for printing anti-counterfeiting authentication is arranged in the accommodating gap; the telescopic assembly is arranged in the accommodating gap and is used for sending the anti-counterfeiting printing plate out of the non-setting adhesive body for anti-counterfeiting detection; the tearing assembly is used in cooperation with the telescopic assembly, and the tearing assembly is used for crushing the whole structure of the adhesive sticker body when the anti-counterfeiting printing plate is sent out; the tearing assembly ensures that the anti-fake sticker is structurally damaged after being used and cannot be recovered, and secondary utilization is effectively prevented.

This invention discloses a method for selecting channels for embedding and extracting anti-counterfeiting watermarks in printed images, belonging to the field of anti-counterfeiting printing technology. The method of this invention breaks with the default approach of extracting watermarks from the same channel in which they are embedded. The watermark extraction position and embedding position proposed in this invention can be the same or different. Instead, regardless of whether the watermark is embedded in RGB or CMYK color mode, it is extracted in RGB color mode, resulting in better extraction performance.

The application discloses a kind of cloud security printing systems and methods, system includes: printing terminal, for after identifying the U-KEY device inserted PIN code input by user is sent to cloud server platform and carries out identity authentication;And after receiving the information of identity authentication pass, initiate printing task application and upload the file needing printing;Printer resource pool, for after identifying the U-KEY device inserted PIN code input by user is sent to cloud server platform and carries out identity authentication;And after receiving the information of identity authentication pass, request corresponding print list and print after receiving print file queue;Cloud server platform, for according to PIN code uploaded by printing terminal and printer resource pool, the identity of user is authenticated;And when the printer identity authentication passes after U-KEY device is inserted, corresponding print file queue is issued to printer.The application can improve the security of cloud printing identity authentication process and the utilization of printing equipment.

The application relates to an anti-fake printing equipment and belongs to the technical field of printing equipment, which comprises an anti-fake printing machine, a feeding table is arranged at the feeding end of the anti-fake printing machine body, a cavity is arranged in the feeding table, a plurality of placing holes are arranged in the upper part of the cavity, a plurality of pulleys are arranged in the upper part of the cavity, the placing holes and the pulleys are in one-to-one correspondence, the upper part of the sidewall of the pulley is arranged outside the placing hole, a driving motor for driving the pulley to rotate is arranged at the upper end of the feeding table, a wind collecting cover is arranged in the cavity, one end of the wind collecting cover is fixedly connected to the inner wall at the upper end in the cavity, an air draught fan is arranged at the other end of the wind collecting cover, a supporting frame is arranged above the feeding table, and a pressing assembly for pressing a product on the pulley is arranged on the supporting frame. The application has the effect of reducing the occurrence of paper jam of the anti-fake printing equipment.

To provide a technology that can properly execute printing processes in a security printing function that performs print jobs associated with passwords and a storage printing function that performs print jobs associated with user identification information. [Solution] The MFP1 has a security printing function that prints print jobs 75 that include a password 83, and a storage printing function that prints print jobs 75 that include a username 85. In response to receiving a setting to execute the storage printing function (S77:YES), the MFP1 saves the received print job 75 to memory 15 without determining whether a password 83 is set for the print job 75 (S87). The CPU 12 also prints the print job 75 stored in memory 15 without receiving the password 83 via the touch panel 21.

The utility model relates to environment-friendly anti-counterfeit printing equipment, and relates to the field of printing equipment. The device comprises a rack, a static electricity removing part, a brush roller, a dust removing part and printing equipment, a plurality of conveying rollers are horizontally and rotationally connected to the rack in the transverse direction, the brush roller and the printing equipment are arranged on the top face of the rack in the conveying direction, and the brush roller and the printing equipment are fixed to the top face of the rack; a plasma air bar is horizontally fixed to the vertical end face of the side, close to the printing equipment, of the brush roller, an air inlet pipe is vertically communicated and fixed to the outer circumferential face of the plasma air bar, an ion fan is assembled on the air inlet pipe of the plasma air bar in a communicated mode, and a static electricity removing part is arranged on the side, away from the printing equipment, of the brush roller on the top face of the rack. When paper enters, the static electricity removing part is used for removing static electricity on the surface, then dust on the paper is removed through the brush roller, then the plasma wind bar is used for removing static electricity generated due to friction between bristles and the surface of the paper, and the paper dust removing effect is guaranteed.

The invention relates to the technical field of anti-counterfeit printing, in particular to a microstructure holographic anti-counterfeit UV plate making method and system.The method comprises the steps that the focusing depth and the installation position of a target layout image are collected through a target CCD camera, a light path positioning model is constructed, and accurate mapping of image pixel microstructure coordinates and physical positions in a three-dimensional plate making coordinate system is achieved; the layout range and the micro-unit size of the UV printing plate are determined by combining the depth characteristics of the microstructure in the target range and the light path positioning model; and based on a light path positioning model with aberration correction, each micro-unit is accurately projected to a target layout image, and a corresponding holographic anti-counterfeiting UV printing plate is generated. According to the method, through combination of depth perception, coordinate mapping and aberration correction, automatic positioning and self-adaptive division of microstructure plate making are realized, projection definition and curing consistency are improved, the problems of positioning deviation, pattern distortion and edge blurring in traditional plate making are solved, and the precision, identification degree and anti-counterfeiting performance of holographic anti-counterfeiting patterns are improved.

The present invention relates to a pigment mixture based on spherical particles having a defined particle-size distribution, and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, in cosmetic formulations, as tracer, as filler and for the preparation of pigment preparations and dry preparations.

The application discloses a kind of anti-fake printing detection device for wine packaging box, it is related to anti-fake printing detection device field, it includes detection rack, the detection rack is equipped with conveying belt and two mounting brackets, one the detection scanner of swing installation is installed on the mounting bracket;And still including bearing positioning mechanism and scanner automatic cleaning device.It needs to be explained, the position of packaging box is corrected by two arc-shaped positioning clamps, and the weight of packaging box is detected by bearing rotating plate, to avoid the problem that the wine in packaging box is lost due to evaporation or breakage;Multiple dust suction heads are used to clean the surface of packaging box, to ensure the cleanliness of packaging box, and thus ensure the accuracy of detection.In addition, the detection scanner moves to drive the protective slide to move, the protective slide continuously moves, so that the extrusion slide bar is cleaned by the cleaning scraper to clean the detection scanner, so as to ensure the cleanliness of the detection scanner, and thus further ensure the accuracy of detection effect.

The present invention relates to the field of improved opacified polymeric transparent substrates (x00) for use in making security documents such as banknotes, said substrates (x00) combining good mechanical performance and that can be easily handled for subsequent multi-step security printing processes. In particular, the present invention provides kits for manufacturing an opacifying system (x10) either on one side or on both sides of a polymeric transparent substrate (xx0), said kit comprising a) a first composition for manufacturing an opacifying layer (x11), b) a second composition for manufacturing a conductive layer (x12), and c) a third layer composition for manufacturing an acceptance layer (x13), wherein the first, second and third compositions comprise i) water, ii) a water-soluble or water-dispersible resin, iii) a white pigment, iv) a wax, wherein at least one of the first, second and third compositions comprises an anti-static agent, and wherein at least two of said first, second and third compositions comprise a mica compound.

The utility model discloses an adhesive tape structure with various anti-counterfeiting and anti-uncovering functions. The adhesive tape structure comprises an isolating layer, an anti-counterfeiting printing layer, an aluminum plating layer, a base material layer, an anti-counterfeiting characteristic layer and an adhesive layer which are sequentially stacked from bottom to top, after the adhesive tape is torn off finally, part of the adhesive layer is adhered to the surface of an object to be adhered, and an anti-counterfeiting mark is left through the anti-counterfeiting feature layer, so that the purposes of counterfeiting prevention and secondary adhesion prevention are achieved; the aluminized layer is provided with photoetching fine patterns or characters through a laser engraving technology, and different illumination colors and different three-dimensional effects are shown when observed from different angles; the anti-counterfeiting printing layer is transparent ink which is printed on the base material layer or the aluminum plating layer through a printing machine and is anti-counterfeiting based on illumination identification; according to the utility model, the photoetching fine patterns or characters are arranged on the aluminized layer through the laser engraving technology, and the transparent ink based on illumination identification anti-counterfeiting and temperature change identification anti-counterfeiting is arranged on the base material layer or the aluminized layer, so that the purpose of increasing the anti-counterfeiting identification degree in double or multiple ways is achieved.

The present invention relates to compounds of the formula (I′), especially compounds of formula (I), a process for their preparation and their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications, or for brand protection; or as marker for liquid. Compounds of formula (I′), especially compounds of formula (I), represent almost colourless IR absorbers, which exhibit high resistance against chemicals and solvents as well as good light stability and good thermal stability. Due to their unique application properties they can be advantageously employed as IR absorbers for laser writing, heat shielding, security printing, the laser-welding of plastics and as marker for liquids.

This invention discloses a colorful anti-counterfeiting QR code manufacturing process and secure identification algorithm, relating to the fields of anti-counterfeiting printing and QR code recognition technology. The process primarily involves sequentially printing three types of metameristic inks onto a substrate to form a dataset identification code, a data verification code, and a time-series verification code. The three inks exhibit minimal color difference (ΔE < 1.0) under natural light to conceal the pattern, while displaying a 4-5 times brightness contrast under red, green, and blue monochromatic light, respectively, enabling multimodal information storage. During identification, a mobile application controls the screen to sequentially emit multiple monochromatic lights to illuminate the QR code, and a camera captures reflected images under different light conditions. By comparing the reflection characteristic model and time sequence consistency, the authenticity of the physical entity is determined, and decoding is performed. This technical solution combines the principles of static QR codes, offering a cost advantage while providing both concealed anti-counterfeiting and dynamic verification capabilities, making it suitable for high-end anti-counterfeiting labels.

The present invention discloses an intelligent anti-counterfeiting color box printing positioning control method, which relates to the field of printing positioning control technology. The method includes dividing the color box layout into multiple detection areas, setting a combination of cross and circular positioning marks in each area, and using a high-resolution image sensor to collect positioning information in real time to establish a feature database; using a multi-layer convolutional neural network to extract regional deformation and position features, combining a residual network to calculate actual deviations, constructing a mapping model between process parameters and position deviations, and using a deep reinforcement learning algorithm to establish a differentiated compensation model; allocating compensation parameters to a servo control unit, generating motion control instructions, using compensation effect evaluation indicators to evaluate position deviations in real time, establishing a decision model to achieve adaptive optimization of compensation parameters, and realizing adaptive adjustment of compensation by region. This method realizes intelligent monitoring and optimization of the anti-counterfeiting printing process, significantly improving the printing quality stability and production efficiency of anti-counterfeiting color boxes in mass production.

The application discloses a three-dimensional dynamic pattern anti-fake label and a printing method thereof, and relates to the technical field of anti-fake printing. The anti-fake printing method comprises the following steps: printing a layer of light-color UV ink on paper by offset printing, and printing a layer of UV high-light transparent oil on the light-color UV ink to obtain a UV high-light transparent oil layer; printing a dynamic target base pattern on the UV high-light transparent oil layer by UV offset printing to obtain a three-dimensional dynamic pattern base layer; printing mark graphics on the three-dimensional dynamic pattern base layer to form a first anti-fake pattern; spraying high-temperature transparent hot-melt resin on the first anti-fake pattern to form a transparent interval layer; and printing a silk screen microlens array on the transparent interval layer by using transparent UV expansion ink to obtain a second anti-fake pattern with the three-dimensional dynamic pattern.

The application discloses a kind of magnetic field response type photocuring magnetic anti-fake printing products and preparation method thereof, it is related to anti-fake printing technical field, including cotton fiber security paper, reactive interface layer P and magnetic top layer I;When preparing, paper base is pre-adjusted wet, interface layer P is coated and pre-cured to acrylic double bond conversion rate 46 to 58%, then print the magnetic top layer I containing surface bifunctionalization sheet magnetic photochromic pigment, make wet film be oriented after magnetic field, and first pass UV pre-pinning is carried out 10 to 14 milliseconds after magnetic field peak position, and is carried out UV final curing and dark post-curing after Interface layer P and magnetic top layer I share isobornyl acrylate and tetrahydrofurfuryl alcohol acrylate, form controlled P / I interdiffusion depth and functional layer-substrate transition zone depth.The method can inhibit paper base capillary liquid extraction and edge outer climb, improve bright strip edge sharpness, rolling bright strip continuity, wear resistance, folding durability and continuous printing stability, and reduce waste strip rate and volatility.

The utility model discloses laser coding anti-counterfeiting printing equipment, which relates to the technical field of anti-counterfeiting printing equipment and comprises a first conveying table, a second conveying table is mounted at the upper end of the first conveying table, the length of the first conveying table is larger than that of the second conveying table, a first side plate is mounted on each of two sides of the first conveying table, and a second side plate is mounted on each of two sides of the first conveying table. Two sides of the second conveying table are each provided with a second side plate, the inner side of the first side plate and the inner side of the second side plate are each provided with a telescopic plate, laser heads are installed at the lower ends of the telescopic plates, and a lifting plate is installed at the position, located on the outer side of the first conveying table, between the first side plate and the second side plate; and a rotating shaft is rotationally connected between the two lifting plates, one end of the rotating shaft is connected with a driving device, and an electromagnet is installed in the center of the surface of the rotating shaft. According to the utility model, a series of structures are arranged, automatic operation is realized in the whole process, manual intervention is not needed, and time cost can be saved to a greater extent.

The utility model belongs to the technical field of anti-counterfeit printing, and particularly relates to an anti-counterfeit printing gluing mechanism which comprises a base, a gluing and pressing mechanism is arranged above the base, and a heating mechanism is arranged on one side of the gluing and pressing mechanism. Through the arranged gluing press-fit mechanism, a first power assembly is started to drive a feeding roller to conduct rotary feeding, a lifting tensioning assembly installed on one side of the feeding roller conducts tensioning, and a longitudinal moving assembly longitudinally installed on a frame body adjusts an electric lifting rod, a liquid glue box and a gluing head to conduct longitudinal movement; the hydraulic telescopic cylinder is started to push the movable pressing roller to push materials on the outer surface of the anti-fake film roller, the liquid glue box is matched with the gluing head to conduct gluing, the uniform gluing effect is guaranteed, meanwhile, the pressing force is increased, the gluing distribution uniformity is improved, use is convenient, and practicability is high.

The present application relates to anti-fake label packaging and printing process technical field, especially an environment-friendly anti-fake label packaging and printing process, comprising the following steps, according to the printing requirement of anti-fake label packaging, selecting the appropriate printing unit on the lithographic press, the label web to be printed and the packaging web are adopted intermittent unwinding mode, start two groups of unwinding mechanism to the label web and the packaging web are unwound, and in the unwinding process, the adhesive film is coated on the label web unwound adhesive surface by using the film laminating mechanism, the label packaging is transmitted to the lithographic press, and the printing surface of the label is printed by using water-based ink. The device is reasonable in design, which can avoid the problem of environmental pollution caused by the difficulty of degradation of anti-fake label in non-use condition, and is conducive to avoiding the problem of blurred discoloration of printing ink on the label caused by traditional process materials, and is conducive to improving the service life of anti-fake label packaging.

The invention relates to the technical field of anti-counterfeit packaging, in particular to an anti-counterfeit printing process for cigarette packaging paper and the cigarette packaging paper.The anti-counterfeit printing process comprises the following steps that S1, according to a preset pattern, multi-color ink is offset-printed on a printing stock, and drying and curing are conducted to form a basic ink layer; s2, blending microcapsule color-changing ink as gloss oil, and coating the gloss oil on a specified area on the surface of the basic ink layer by a glazing unit of the offset press to form a gloss oil layer; the glazing unit comprises an anilox roller used for transferring glazing oil to the surface of the basic ink layer, the range of the line number of the anilox roller is 80-120 lpi, and the range of the ink loading amount is 11-13 cm < 3 > / m < 2 >; and S3, drying and curing the gloss oil layer. According to the anti-counterfeit printing technology, the technological process can be shortened, the technology cost is saved, and the cigarette packaging paper obtained through the anti-counterfeit printing technology has the good color changing effect.

The invention relates to the technical field of label anti-counterfeit printing, and discloses a holographic laser label anti-counterfeit printing method and system. The method comprises the following steps: carrying out image acquisition and feature processing on a holographic laser label and a printing carrier to obtain a label feature information matrix and a carrier feature information matrix; the holographic laser label is grabbed, and grabbing state data of the holographic laser label on a robot end effector are obtained; carrying out attachment path evaluation, and determining an attachment path parameter set containing a plurality of middle attachment position points and attachment parameters; and according to the attachment path parameter set, continuous printing tracking path planning is carried out on the holographic laser label, image processing is carried out at the middle attachment position point, and a motion control instruction sequence of the printing robot is generated. According to the method, multi-dimensional attachment path optimization is realized, the problem of insufficient single-step attachment precision in the traditional technology is solved, accurate attachment path planning in a complex environment is realized, and the attachment success rate is remarkably improved.

The invention provides an anti-counterfeit printing detection device for a packaging box, relates to the field of sensor detection, comprises a base and a conveying mechanism arranged on the base, and aims to solve the problems that in the prior art, when the surface temperature of a lens of a visual sensor is lower than the dew point of ambient air, the surface of the lens of the visual sensor fogs, and the surface temperature of the lens is too high. In order to solve the problem of low detection efficiency caused by blurring of images detected by a visual sensor due to the fact that the temperature of the surface of the sensor lens is higher than the dew point of ambient air by arranging a synchronous adjusting mechanism and heating the sensor lens through hot air discharged by the synchronous adjusting mechanism, the detection efficiency is improved. The condition that the sensor is fuzzy during detection is reduced, and the detection efficiency is improved; through the arrangement of the synchronous adjusting mechanism, the problem that in the prior art, dust adheres to a sensor lens and influences detection is solved; through arrangement of the synchronous adjusting mechanism, the problem of sensor damage caused by physical collision in the prior art is solved.