168results about How to "Avoid reflections" patented technology

The invention discloses a high-stability optical fiber connecting device and a using method, and relates to the technical field of optical fiber communication accessories, the high-stability optical fiber connecting device comprises a connector, plug-in assemblies are installed on the two sides of the connector in a plug-in mode, locking heads are installed on the side edges of the plug-in assemblies in a threaded mode, and the two sides of the connector are connected with optical fibers to be connected. The plug-in assembly and the locking head are movably sleeved on the outer surface of the optical fiber to be connected, the outer surface of the connector is fixedly connected with a protective sleeve, and sealing sleeves are installed on two sides of the protective sleeve in a threaded mode. According to the high-stability optical fiber connecting device and the using method, the fiber cores of the to-be-connected optical fibers are extruded and fixed through the spring pieces, the auxiliary balls move on the two sides, and the two sides of the fiber cores of the to-be-connected optical fibers are fixed, so that the connecting stability of the two to-be-connected optical fibers is kept; the outer surface of the to-be-connected optical fiber is sealed, and the connection part of the to-be-connected optical fiber is kept clean, so that the optical fiber connector can adapt to multiple scenes, is flexible and convenient to disassemble and assemble, and is convenient to maintain and replace.

A portable range finder belongs to the technical field of range finders and comprises a portable range finder body, a rear seat is arranged on the rear side of the portable range finder body, rotating shafts are rotatably arranged on the left side wall and the right side wall of the rear seat, supporting frame bodies are mounted on the outer walls of the rotating shafts, the supporting frame bodies are rotatably attached to the side walls of the rear seat, and the supporting frame bodies are in a first state and a second state. According to the portable range finder, the screen of the portable range finder main body can be shielded by means of the unfolded folding shielding shed, so that the phenomenon of light reflection caused by direct irradiation of sunlight on the screen of the portable range finder main body is avoided, a worker can read the reading on the screen of the portable range finder main body more conveniently and clearly, the accuracy of a ranging result is ensured, and the working efficiency is improved. The supporting frame body can open and support towards the rear side relative to the rear seat, so that the supporting function of the portable range finder main body is realized, and the portable range finder main body can keep an angle for measurement for a long time without other tools.

The invention belongs to the technical field of optical module testing, and particularly relates to an optical module chip automatic testing method which comprises the following steps that S1, a conveying mechanism conveys a material disc to the position below a suction cup, an air cylinder clamping jaw acts to clamp the material disc and fix the material disc, and a three-axis moving platform drives the suction cup to descend and adsorb an optical module chip in the material disc; then the optical module chip is driven to ascend and move to the position above the camera; the position information of the optical module is identified by adopting multiple cameras, and the angle and the direction of the optical module are synchronously adjusted in real time, so that the accurate alignment of the position of the optical module in the test process can be ensured, errors caused by position deviation are eliminated, the butt joint of the optical module and the optical fiber connector is more accurate, the coupling efficiency of optical signals is improved, and the test accuracy is improved. And loss and reflection of optical signals are reduced. Therefore, the test precision of the optical power (TX / RX) can be obviously improved, the accurate and consistent position of the optical module in each test can be ensured, and the test fluctuation caused by position offset is reduced.

The utility model relates to the technical field of metallurgical cooling, in particular to a side spraying drainage device which comprises a body, a cavity is arranged in the body, a water tank for cooling water to enter and exit is arranged at the bottom of the cavity, a plurality of drainage openings are arranged on the water tank, a cross beam is arranged on the upper portion of the cavity, two ends of the cross beam are fixedly connected with the body, and a plurality of chains are hung on the cross beam. The chain is used for weakening kinetic energy of cooling water, a plurality of vertical plates which are arranged according to a certain rule are fixedly installed on the rear wall of the cavity, and the vertical plates are used for further consuming the kinetic energy of the cooling water. The side spraying drainage device is convenient for field operation personnel to install, the labor intensity is greatly reduced, and the operation efficiency is improved. Through the combined action on the chain and the vertical plate, the residual kinetic energy of the cooling water can be consumed to the greatest extent, the splashed cooling water can be prevented from being reflected to the strip steel again, and the edge of the strip steel is prevented from being twisted to influence the quality of the strip steel; and meanwhile, the splashing cooling water can be prevented from forming water mist and entering equipment such as a bearing and a motor of the cooling system to cause damage to the equipment and finally cause faults of the cooling system.

The invention discloses an unmanned aerial vehicle-based urban area air pollution monitoring method and system, and aims to solve the problems that the current unmanned aerial vehicle-based urban area air pollution monitoring method generally uses a sensor to monitor urban area air pollution, the time required by the monitoring method is relatively long, and the monitoring area is limited. The technical problem that the shooting effect is not clear enough due to the light reflection influence of a building glass curtain wall can be solved, and the method comprises the following monitoring steps that S1, an unmanned aerial vehicle is used for carrying an air quality sensor, a laser scanner, an infrared sensor, a large gas detection sensor, an infrared imaging camera and a high-definition camera to lift off; according to the method, the concentration of the particulate matters in the air is determined through an image recognition technology, a monitoring area can be quickly reached, the time required by a traditional monitoring method is shortened, wide areas and places difficult to approach can be covered, and high accuracy and reliability of monitoring data are guaranteed.

The invention discloses an image measuring instrument positioning device which comprises a fixed bottom plate, a light source adjusting assembly, a lens cleaning structure and a workpiece moving platform, and aims to solve the problem that when a common image measuring instrument measures a workpiece with a large surface concave-convex fluctuation, the surface of the workpiece is unsmooth when different positions are measured due to the surface fluctuation of the workpiece. In order to solve the problem that measurement errors are caused by the change of the distance between the measuring instrument and the workpiece, a distance control assembly is designed, and through the arrangement of the distance control assembly, the distance between a lens and the surface of the workpiece can be automatically controlled when different positions of the workpiece are measured, so that the distance between the lens and the surface of the workpiece can be automatically controlled when the surface of the workpiece fluctuates. The height of the image measuring instrument is automatically adjusted, so that the distance control function is realized, and through the arrangement of the light source adjusting assembly, the illumination intensity can be automatically adjusted when different distances are measured.

The invention relates to the technical field of elevator light curtains, in particular to a method for identifying transparent, semitransparent and small-size objects and an elevator light curtain. A plurality of first transmitting tubes and a plurality of first receiving tubes are arranged at the TX end of the light curtain, a plurality of second receiving tubes are arranged at the RX end of the light curtain, the first transmitting tubes and the first receiving tubes are installed on the same side, infrared rays of reflection and diffuse reflection are utilized, small-size, transparent and semitransparent objects which are not easy to detect are easy to detect, and the detection accuracy is improved. According to the elevator light curtain, through data collection and analysis of a laboratory, the characteristics of common interference information are analyzed, multiple judgment requirements such as the difference value of voltage values, the variation amplitude of the voltage values and the difference of voltage average values under the corresponding distance of detected voltage values are applied, interference signals are eliminated, and the accuracy of the elevator light curtain is improved. Transparent, semitransparent and small-size objects can be accurately judged, and the safety of elevator operation is improved.

The utility model discloses a display module, a display device and bonding layer die cutting equipment. The display module comprises a display panel which comprises a display area and a non-display area; the cover plate is arranged on the light emitting side of the display panel; the bonding layer is arranged between the display panel and the cover plate, and the bonding layer can be used for bonding the display panel and the cover plate; wherein the bonding layer covers a display area and a part of a non-display area of the display panel, and an ink layer is arranged on the side wall of the bonding layer. The side view white edge phenomenon of the display module can be improved.

The utility model relates to the technical field of medical instruments, in particular to a pair of special curved forceps for a haemorrhoids operation. The forceps comprise a first forceps body and a second forceps body, each of the first forceps body and the second forceps body comprises a first bent part, a second bent part, a forceps body and a forceps handle, the first bent parts, the second bent parts, the forceps bodies and the forceps handles are sequentially connected from front to back, the forceps bodies are straight, the first bent parts are bent upwards from back to front relative to the forceps bodies, and the second bent parts are bent upwards from back to front relative to the forceps bodies. The two ends of the second bending part are connected with the first bending part and the forceps body respectively, the second bending part is of an arch structure with the middle protruding upwards, and a receding part which is located between the first bending part and the forceps body and is opened downwards is formed on the lower side of the second bending part; and the plier body of the first plier body is hinged with the plier body of the second plier body through a pin shaft. The bent forceps special for the hemorrhoid operation solve the problem that the anal internal sphincter is prone to being clamped when the forceps clamp internal hemorrhoids in the operation, a doctor can conduct ligation and observation conveniently, and the operation time of the doctor is saved.

The utility model discloses a special student experiment table for teaching, which belongs to the technical field of special experiment tables for teaching and comprises four supporting columns, one side of each supporting column is fixedly connected with a fixing plate, the top side of each fixing plate is fixedly connected with first fixing blocks in a bilateral symmetry manner, and the middles of the two first fixing blocks are fixedly connected with first fixing shafts. The outer side of the middle section of the first fixing shaft is rotationally connected with a pedal plate, one side of the pedal plate is rotationally connected with a second fixing shaft, and the left end and the right end of the second fixing shaft are fixedly connected with second fixing blocks. In addition, reduction of class attending efficiency due to light reflection of the display is avoided, and certain practicability is achieved.

The utility model relates to the technical field of film detection, in particular to a film defect detection device. The device comprises a film viewing cavity arranged in a darkroom, the film viewing cavity comprises a main cavity defined by baffles and a middle platform layer arranged in the main cavity, a light through hole is formed in the middle platform layer, a xenon lamp is installed at the top of an upper cavity so that light can irradiate a to-be-detected film at the light through hole, and a defect imaging curtain is laid at the bottom of a lower cavity so that the to-be-detected film can be detected. The shadow left by the thin film at the light through hole is received; light penetrates through the thin film, shadow is projected on the defect imaging curtain laid at the bottom of the lower cavity, due to the fact that the xenon lamp with higher light penetrating power is selected, slight deformation type defects of the thin film can be seen on the defect imaging curtain, the defects of an existing thin film defect observation mode are overcome, and the tiny and slight deformation type defects of the thin film can be seen.

An optical element includes a substrate and a low reflective layer. The low-reflection layer is arranged on the surface of the base material, and the low-reflection layer comprises a plurality of nano-particles. The nanoparticles are stacked with each other, and the number of the nanoparticles decreases progressively in the direction away from the substrate, so that the effective refractive index of the low-reflection layer decreases progressively in the direction away from the substrate, thereby avoiding total reflection of light on the interface, and further reducing the reflectivity. When specific conditions are met, the nanoparticles can be stacked to form a gradient refractive index film layer, and the low-reflection layer can provide better anti-reflection capability. The invention further discloses an imaging lens with the optical element and an electronic device with the imaging lens.

The invention provides a display panel and a display device. The display panel comprises a substrate; the display function layer is arranged on one side of the substrate; the light extraction layer is located on the side, away from the substrate, of the display function layer, and the light extraction layer comprises a first light extraction layer, a second light extraction layer and a third light extraction layer which are sequentially arranged in a stacked mode in the direction away from the substrate; the refractive index of the second light extraction layer is larger than the refractive index of the first light extraction layer and the refractive index of the third light extraction layer. According to the display panel provided by the invention, the refractive index of the second light extraction layer is relatively high so as to improve the microcavity effect and improve the light extraction efficiency, and the refractive index of the first light extraction layer and the third light extraction layer is relatively low so as to reduce the refractive index difference with other film layers, so that the total reflection phenomenon caused by mismatching of the refractive indexes is avoided; the light extraction efficiency and the power consumption benefit can be improved, so that the performance of the display panel is improved.

The invention discloses a lamp structure and a vehicle, and the lamp structure comprises a lamp body which is provided with a containing cavity; the lens covers the opening of the accommodating cavity so as to block the accommodating cavity; the light distribution lens comprises a first light distribution component, a second light distribution component and a light source, the second light distribution component is connected with the light incident part, the second light distribution component comprises a lap joint surface, and the part, connected with the light incident part, of the lap joint surface is provided with a lap joint edge; wherein an included angle alpha is formed between the lap joint surface and the horizontal plane, and alpha is larger than or equal to 40 degrees and smaller than or equal to 75 degrees.

The utility model discloses a high-strength low-glossiness fiber automotive upholstery, which belongs to the technical field of automotive upholstery and comprises a U-shaped connecting rod, two ends of the top of the connecting rod are fixed on a roof, a sun shield is rotatably mounted at the bottom end of the connecting rod, and a through hole matched with the connecting rod is formed in the sun shield. The protective mechanism composed of the glass fiber layer, the leather surface layer and the matte surface layer is arranged on the outer side of the sun shield, the surface strength and comfort of the sun shield can be improved, light reflection can be effectively avoided due to the arrangement of the matte surface layer, the safety of meeting vehicles in the driving process is guaranteed, and the service life of the sun shield is prolonged. A positioning mechanism composed of a sliding groove, an inserting block, a spring, a pull rope, a pull block and an inserting groove in a connecting rod is arranged in the middle of the sun shield, it can be guaranteed that the position of the sun shield is stable after the sun shield is folded, and the sun shield is effectively prevented from falling.

The utility model belongs to the field of hospital electronic engineering, particularly relates to an information interaction machine convenient to move, and aims to solve the problems that an existing sliding groove is inconvenient to fix and poor in stability, so that in the moving process of a display, the sliding groove is prone to sliding and moving, and the display is prone to shaking and instability. According to the scheme, the device comprises a base, and two supporting plates are fixedly arranged at the top of the base; the clamping mechanism is arranged on the placing block and is used for clamping and fixing the placing block; and the moving mechanism is arranged on the base and used for driving the base to move. When the display rack is used, the effect of conveniently fixing the placing block is achieved, the stability is enhanced, the placing block does not slide even in the moving process of a display, the situation that the display shakes and is unstable is avoided, and the using effect is improved.

The present application provides a display panel, a display device and a vehicle, wherein the display panel comprises: a substrate; a light-emitting unit, which is arranged on one side of the substrate, and the light-emitting unit emits light toward a side away from the substrate to form a light-emitting area; a shading structure, which is arranged adjacent to the light-emitting unit along a specified direction, and is used to shield the light of the light-emitting area to reduce the light-emitting angle of the light-emitting area along the specified direction; wherein, along the specified direction, when the light-emitting angle is greater than 30°, the brightness of the display panel is less than or equal to 20%. The display panel, the display device and the vehicle provided by the present application have a simple structure and are easy to manufacture. They change the light-emitting angle of the display panel, improve the overall performance of the product, and avoid the reflection of the image of the display panel on the windshield or the windshield, which will not cause visual interference to the driver and improve the safety factor.

The utility model provides an integrated oil dipstick. The integrated oil dipstick comprises a handheld rod, a support, a dipstick belt roller, an oil dipstick crank, an oil dipstick belt, an oil dipstick hammer, a rotatable horizontal supporting frame structure and a rotatable lighting tube structure. The handheld rod, the support, the U-shaped frame, the rotating rod, the supporting pipe, the horizontal frame, the first horizontal bead and the second horizontal bead are arranged in a matched mode, the right end of the supporting pipe can make contact with a supporting position in the using process, and after the first horizontal bead and the second horizontal bead are matched, the corresponding supporting pipe is rotated, so that the supporting position can be supported. Horizontal measurement can be conveniently carried out in the oil measuring process; through arrangement of a support, an adsorption block, a metal hose, a fixing pipe, an LED lamp, a switch and a charging hole, the purpose of preventing light reflection in the illumination measurement process by adjusting the angle of the fixing pipe and the angle of the LED lamp in the process of rotating the metal hose in the use process is facilitated.

The laryngoscope blade comprises a laryngoscope blade body, the laryngoscope blade body comprises a handle body, a main blade, a transparent cover plate, a supporting rod and a camera, the supporting rod is arranged at the bottom end of the handle body, the camera is arranged on one side of the end portion of the supporting rod, and the transparent cover plate is arranged on the handle body. The main blade is clamped and mounted on the outer surface of the supporting rod; by designing the light reflection preventing mechanism, when the laryngoscope blade body is used for examination and under the illumination condition, light reflection is likely to be generated during camera shooting observation, light reflection treatment is avoided through a connecting hole formed in the end, light reflection operation is conveniently avoided during examination operation of the laryngoscope blade body, clear camera shooting is achieved, and observation is achieved through a display screen; the two protective cover plates are moved to be closed in the connecting hole for protection after inspection, dust is not prone to entering the interior through the connecting hole when the protective cover plate is not used, and dust prevention and protection are facilitated.

The invention relates to the technical field of metal product processing quality detection, in particular to a surface defect visual detection method and system for metal product processing, and the method comprises the following steps: step 1, arranging a plurality of linear light sources above the surface of a metal product; 2, acquiring a multispectral image from a position directly facing the surface of the metal product by using a color industrial camera; 3, performing weighted average fusion to generate a fused image; step 4, carrying out adaptive histogram equalization enhancement on the fusion image after reflection suppression and carrying out noise filtering by applying Gaussian filtering; 5, extracting texture features from the enhanced image; step 6, dividing the image into a defect area and a normal area by using an adaptive threshold segmentation method; and step 7, classifying the segmented defect areas. And the support vector machine classifier is adopted to accurately classify the defects, so that reliable output of defect types and position information is ensured, and metal surface defect detection is more accurate and real-time.

The invention relates to the technical field of sensor equipment, and particularly discloses a mining laser carbon monoxide sensor probe and a cooling and dehumidifying method thereof.The mining laser carbon monoxide sensor probe comprises a probe shell and a cover body, and an air inlet cavity and a main cavity are formed between the probe shell and the cover body; a filtering structure and an air tap with an opening facing the filtering structure are arranged in the vent hole in the bottom of the probe shell; a gas inlet cavity cover is arranged in the probe shell and is used for conveying one path of gas in the gas inlet cavity to the main cavity and conveying the other path of gas to the gas nozzle; and a controller, a temperature detection module, a humidity detection module and a laser detection module are arranged in the main cavity. According to the mining laser carbon monoxide sensor probe and the cooling and dehumidifying method thereof, when the temperature and / or humidity in the probe exceed the set threshold value, the probe can be automatically cooled and dehumidified, and a water film on a filtering structure can be automatically removed, so that the detection precision of a sensor is improved, and potential safety hazards are reduced.

The utility model relates to cleaning equipment technical field, concretely relates to a kind of positionable display screen support, including support column and display screen main body, adjustable inner support is slidably sleeved in the support column, the inner support top is fixed in display screen main body bottom surface by bolt, support column bottom rotatably sleeve joint is limit seat, the limit seat fixed sleeve is set on support cross bar, the support column of limit seat both sides rotatably sleeve is set on support cross bar, by positionable rotating support structure, after the operation of display screen main body is completed, by the way of pressing control button, after support column rotates to with two locking grooves alignment, control locking insertion rod is inserted into locking groove and is locked, and locking and canceling operation are more labor-saving and convenient, in the operation after meeting the display screen main body adjustable to backlight, avoid display screen main body reflection, also ensure the firmness of display screen locking when cleaning robot is cleaned.

The utility model relates to a door for a household appliance, which can comprise a door main body arranged in front of a storage space of the household appliance; and a door panel coupled to the door body. The door panel may include a plurality of panels. A camera assembly for acquiring an image of the storage space may be disposed in a door internal space surrounded by the door main body and the door panel. The plurality of panels may include: a front panel constituting the front of the door panel; and a rear surface panel disposed rearward at a distance from the front surface panel. The camera assembly may be disposed at a position other than a region where the front panel and the rear panel face each other. Since the camera device is located outside the path of light reflection between the panels, external light cannot reach the camera device. Accordingly, the camera device can accurately capture only an image of an object disposed inside the home appliance, and can obtain an effect of improving the quality of the captured image by the camera device.

The utility model discloses an LED chip structure which comprises a substrate and an epitaxial layer deposited on the substrate. The epitaxial layer comprises a GaN layer, an N-type electrode, a transparent conductive laminated layer and a P-type electrode which are sequentially deposited on the substrate, and the transparent conductive laminated layer comprises a first transparent conductive layer deposited by sputtering, a second transparent conductive layer deposited by sputtering and laminated on the first transparent conductive layer, and a third transparent conductive layer deposited on the second transparent conductive layer by electron beam evaporation; a plurality of patterned indium tin oxide bumps are formed on the first transparent conductive layer through wet etching, the second transparent conductive layer is used for forming an indium tin oxide layer, and the third transparent conductive layer grows on the surface of the second transparent conductive layer in a granular form. According to the utility model, through the guidance of the graphical first transparent conductive layer, a plurality of transparent interdigital electrodes are added to the existing LED chip, and the traditional electrode fingers are replaced, so that the current expansion capability is greatly improved, and the problem that the light emission of the LED chip is shielded is solved.

The application discloses a light guide assembly and an electronic device. The light guide assembly is used for the electronic device, and comprises a first light guide section, a second light guide section and a third light guide section. The first light guide section, the second light guide section and the third light guide section are sequentially connected. The first light guide section has an incident light side, and the third light guide section has an outgoing light side. In the thickness direction of the light guide assembly, the third light guide section has a height difference with the first light guide section. A reflective film is arranged on the opposite sides of the second light guide section in the thickness direction of the second light guide section. Or the reflective film covers at least the connection between the second light guide section and the first light guide section and the connection between the second light guide section and the third light guide section.

The invention relates to the technical field of code reading, in particular to code reading equipment. Comprising a conveying base, the conveying base is fixedly connected with a support, the support is fixedly connected with a code reader, the conveying base is fixedly connected with a fixing frame, the fixing frame is in ball joint with a swing frame, a first elastic element is arranged between the fixing frame and the swing frame, and the fixing frame is fixedly connected with a fixing ring. The fixed ring is rotatably connected with an inner ring in a sealing manner, the inner ring and the fixed ring are matched to form a first closed cavity, the inner ring is fixedly connected with a push cylinder, the push cylinder is communicated with the adjacent first closed cavity, the push cylinder is slidably connected with a first piston shaft in a sealing manner, and a second elastic element is arranged between the push cylinder and the adjacent first piston shaft. The two first piston shafts drive the swing frame to incline, so that the sliding frame and the sliding column drive the cigarette case to incline synchronously, and the code reading angle of a code reader on a bar code on the cigarette case is changed.

The invention discloses a resonator, a filter and an electronic device, and belongs to the technical field of semiconductors. The resonator comprises a substrate which comprises an electrode finger region, bus regions located on the two opposite sides of the electrode finger region in the first direction, and gap regions located between the electrode finger region and the bus regions; the piezoelectric layer is positioned in the electrode finger region and the gap region, and is positioned on one side of the substrate along the second direction; an opening is formed in the edge of the piezoelectric layer, the opening is at least located in the gap area, and at least part of an interface between the piezoelectric layer and the opening tends to incline towards the direction of the electrode finger area; the first direction is perpendicular to the second direction; and the electrode layer is positioned in the electrode finger region, the gap region and the bus region, and is positioned on one side, deviating from the substrate, of the piezoelectric layer. According to the invention, a spurious mode can be suppressed, and the performance of the resonator is improved.

The invention discloses a resonator, a filter and an electronic device, and belongs to the technical field of semiconductors. The resonator comprises a substrate, the substrate comprises an electrode finger area, and the electrode finger area comprises a main body area and edge areas located on the two opposite sides of the main body area in the first direction; the piezoelectric structure is located on one side, in the second direction, of the substrate, the piezoelectric structure comprises a first piezoelectric layer at least located in the main body area and a second piezoelectric layer at least located in the edge area, and the first piezoelectric layer and the second piezoelectric layer both comprise anisotropic dielectric materials; the crystal orientations of the first piezoelectric layer and the second piezoelectric layer are different; the electrode layer is located on the side, away from the substrate, of the piezoelectric structure. According to the invention, a spurious mode can be suppressed, and the performance of the resonator is improved.

The utility model discloses a display panel and a display device. The display panel includes: a substrate; the pixel definition layer is located on one side of the substrate, and the pixel definition layer comprises pixel definition structures and opening areas between the pixel definition structures; the light absorption layer is located on the side, away from the substrate, of the pixel definition layer, and the light absorption layer avoids the opening area. The display panel can prevent external light rays from being reflected when the external light rays are emitted to the display panel, meanwhile, the light rays in the opening area are not influenced to be emitted to the outside, the problem that in the prior art, the strong light resisting effect of the display panel is poor can be solved, reflection of the display panel to the external light is reduced through the light absorption layer, and therefore the contrast ratio of the display panel is improved.

The present invention relates to the field of code reading technology, and in particular to a code reading device. It comprises a conveying base, the conveying base is fixedly connected with a bracket, the bracket is fixedly connected with a code reader, the conveying base is fixedly connected with a fixed frame, the fixed frame is ball-connected with a swing frame, a first elastic element is arranged between the fixed frame and the swing frame, the fixed frame is fixedly connected with a fixed ring, the fixed ring is sealingly and rotatably connected with an inner ring, and the two cooperate to form a first closed cavity, the inner ring is fixedly connected with a push cylinder, the push cylinder is connected with an adjacent first closed cavity, the push cylinder is sealingly and slidably connected with a first piston shaft, and a second elastic element is arranged between the push cylinder and the adjacent first piston shaft. The present invention drives the swing frame to tilt through two first piston shafts, so that the sliding frame and the sliding column drive the cigarette box to tilt synchronously, thereby changing the code reader's reading angle of the barcode on the cigarette box.