200 results about "Nose bridge" patented technology

An optical device can include a first securement arm, a second securement arm, and a lens frame defining a lens aperture and including a nose bridge, the lens frame connected to the first and second securement arms. The optical device can also include an eye-tracking camera mounted to a platform extending from the lens frame, the platform disposed proximate the nose bridge. An electronic component is disposed in the lens frame, the electronic component electronically connected to the camera.

The utility model relates to the technical field of warm keeping equipment, in particular to an anti-fogging headgear which comprises a headgear body with a head containing cavity, the headgear body extends to the neck, the front side of the headgear body is provided with an observation opening and an installation opening which are communicated with each other, the edge of the observation opening is bonded with an elastic covered edge, and the installation opening is connected with the installation opening. Protective covers are sewn at the two ends of the elastic covered edge respectively, the sides, sewn with the elastic covered edge, of the two protective covers are further secondarily sewn with the edge of the mounting opening, the opposite sides of the two protective covers are sewn and connected to form a face mask with protrusions, and a ventilation opening is formed between the lower portion of the face mask and the interior of the headgear body. The ventilation opening is used for discharging mist to reduce formation of moisture, and a sealing mechanism playing a sealing role with a nose bridge is arranged above one side, close to the interior of the head cover body, of the mask; and by arranging the ventilation opening and the sealing mechanism, the problems of fogging and moisture accumulation in the headgear are effectively solved.

Decoupled waveguide eyeglass frame assemblies include an outer frame and an inner “floating” frame mounted to the outer frame at a central location proximal to a nose bridge of the outer frame. Waveguides and / or displays are mounted to the floating frame with upper and lower floating arms that act to ensure proper alignment of the one or more waveguides relative to another waveguide (e.g., in a binocular AR display) and / or to a user's eye.

The invention relates to the technology of intelligent glasses, and discloses an eye movement state recognition method based on intelligent glasses, the intelligent glasses and a storage medium, and the method comprises the steps: collecting ambient light data based on an ambient light camera of the intelligent glasses; according to the ambient light data, adjusting exposure parameters and gains of a plurality of infrared cameras of the intelligent glasses; based on the adjusted infrared camera, continuously collecting human eye images; the human eye images collected by the infrared cameras on the left side and the right side are corrected and fused through the human eye images collected by the infrared cameras above the nose bridge; identifying key feature points of the eyes; calculating the movement speed and direction of the eyes according to the position change of the feature points in the continuous frame images; generating eye movement data; and classifying the eye movement data by using a pre-trained eye movement state classification model, and outputting a current eye movement state. The invention further discloses a control device. The objective of the invention is to improve the accuracy of the intelligent glasses in recognizing the eye movement state of the user.

The invention discloses a laser welding device for spectacle frame production, and relates to the technical field of laser welding. The controller is mounted on one side of the operation table through bolts and used for controlling the device to work; the conveying mechanism is mounted at the top of the operation table and is used for positioning and conveying the spectacle frame assembly; the movable platform is located on one side of the conveying mechanism, and the bottom of the movable platform is connected with the operation table; according to the device, automatic fixing and positioning of the glasses frame and the nose bridge frame before welding are achieved through the deflector rod and the sliding rod on the die holder, after welding is completed, the sliding rod pops up from one end of the deflector rod and drives the buckle to reset, the buckle is made to break away from fixing of the glasses frame and the nose bridge frame, and under the action of the torsional spring, the torsional spring drives the sliding rod and the deflector rod to pop up; the spectacle frame then falls into the collecting box; by means of the automatic discharging process, the requirement for manual discharging is avoided, the labor intensity is reduced, and therefore the continuity of the production process is achieved.

The invention provides a wearing detection assembly, intelligent glasses and a wearing detection method, the inner wall of the stipule of the wearing detection assembly can be provided with an internal contact, and the stipule is internally provided with a sensing device. Under the condition that a user wears the intelligent glasses, the extrusion effect on the stipules can cause displacement and / or deformation of the internal contacts so as to abut against the sensing device, the sensing device can generate corresponding extrusion signals, and the extrusion signals can reflect the contact state of different positions of the stipules and the nose bridge of the user, or the extrusion signals can reflect the contact state of different positions of the stipules and the nose bridge of the user. The extrusion signals can reflect the wearing state of the intelligent glasses. According to the wearing detection assembly and the intelligent glasses provided by the invention, the wearing state detection efficiency is higher, the reliability is better, the energy utilization efficiency of the intelligent glasses is improved to a certain extent, and the use experience of a user is improved.

A powered fastener driver includes a driver blade, a lifter, a nose piece, a magazine, and a light. The driver blade is configured to be movable between a top-dead center position and a bottom-dead center position. The lifter is operable to move the driver blade from the bottom-dead center position toward the top-dead center position. The drier blade is extendable through the nose piece when moving from the top-dead center position to the bottom-dead center position. The magazine is configured to transfer individual fasteners into the nose piece. The magazine has a front side configured to face the workpiece during driving of the fastener, an opposite rear side, and a lateral side extending between the front side and the rear side. The light is positioned adjacent the lateral side of the magazine closer to the front side than the rear side.

An example augmented-reality headset comprises a lens frame and a nose pad coupled to the lens frame. The nose pad is rotatably coupled to the frame along an axis, and the nose pad is configured to rotate between a first position and a second position, and the first position has a first angle along the axis relative to a surface of the lens frame and the second position has a second angle along the axis relative to the surface of the lens frame, wherein the first angle is different from the second angle.

This utility model discloses a nose bridge strip processing technology, specifically a curved nose bridge strip cutting assembly, including a connecting frame. A mounting frame and a fixing frame are respectively connected to the top and bottom of the connecting frame. A connecting plate is provided on the top of the connecting frame, and multiple sets of wire guide wheels are rotatably connected to the connecting plate. A conveying wheel is rotatably connected inside the fixing frame, and the conveying wheel and the wire guide wheel are correspondingly arranged. A conveying component is connected to the connecting frame to convey the nose bridge strip. A cutting component is connected to the top of the connecting frame to cut the nose bridge strip conveyed by the conveying component. A motor drives a drive gear to rotate, which in turn drives a driven gear that is in transmission with the drive gear to rotate, causing the pulling wheel to work synchronously. This pull wheel, in conjunction with the wire guide wheel and the conveying wheel, assists in conveying the nose bridge strip. After the strip is conveyed to the correct position, the cutting motor drives a swing arm to deflect, causing the slide to slide along the outside of the guide seat, thus changing the position of the cutting blade and performing the nose bridge strip cutting operation.

The glasses with the positioning function comprise a glasses frame, a nose bridge bracket and lenses, the two lenses are movably embedded in the inner side of the glasses frame, a glass preheating anti-fogging structure is arranged on the inner side of the glasses frame, and charging port waterproof structures are arranged on the outer sides of glasses legs in two glasses leg assemblies. A bracket replaceable structure is arranged at the other end of each glasses leg in the two glasses leg components; the glass preheating anti-fogging structure comprises a storage battery and an electric heating wire, the electric heating wire is fixedly mounted in the glasses frame, and the storage battery is electrically connected with the electric heating wire. The storage battery supplies power to the electric heating wire, and the electric heating wire can be heated to a preset temperature or above within a short time after being electrified, so that the lens in contact with the electric heating wire can be slowly heated to facilitate demisting in winter, and the heating and demisting effects of the glass lens can be realized within a short time when a user enters a warm room from a low-temperature environment; therefore, the use effect of the glasses with the positioning function is improved.

The utility model discloses a pair of glasses with a detachable decorative frame, and relates to the technical field of glasses. The glasses with the detachable decorative frame comprise a glasses frame, the decorative frame, an installation column and a positioning structure, an annular frame is fixedly installed on the front side of the glasses frame, lenses are arranged on the glasses frame, an installation base is fixedly installed on the outer wall of the glasses frame, a glasses frame is installed on the installation base in a hinged mode, and two sets of rubber nose pads which are distributed left and right are arranged on the glasses frame. A square column is fixedly mounted on the outer wall of the rubber nose pad, the decorative frame is arranged on the annular frame, the mounting column is arranged on the rear side of the glasses frame, and the positioning structure is arranged on the mounting column and the square column. According to the glasses with the detachable decorative frames, the decorative frames of different types and colors can be conveniently replaced, the rubber nose pads are convenient to rotate, automatic adaptation and adjustment can be performed according to nose contours of different users, discomfort caused by pressing of the nose bridge due to angle deviation is prevented, and the use comfort of the glasses is improved.

The pair of sunscreen glasses comprises a sunscreen cap body, goggles and a damping rotating shaft device, and the goggles are rotationally connected with the damping rotating shaft device at the central position of the lower end of the brim of the sunscreen cap body, so that the goggles and the damping rotating shaft device can be structurally integrated; the positioning buckle is arranged on the damping rotating shaft device in the center of the lower end of the brim of the sunscreen cap body in a matched mode and used for being stably connected with the buckle of the goggles, the goggles are matched with the positioning buckle on the damping rotating shaft device through the buckle of the goggles, and detachable or lockable rotating connection is achieved. The pair of sunscreen glasses overcomes the defects that the nose bridge and the ears can be pressed when ordinary sunscreen glasses are worn for a long time, and an existing sunscreen mask cannot protect the makeup of a makeup user while keeping sunscreen.

A head-mounted device (HMD) 10 includes a front cover defining an external, forward facing surface and a nasal bridge 26NB positioned between first 66 and second 78 forward facing cameras. First 36 an

1. Name of the designed product: nose bridge of magnetic glasses accessory. 2. Use of the designed product: the magnetic glasses accessory is used to be fixed on the front side of glasses by magnetism, and the designed product is used for the nose bridge of the magnetic glasses accessory. 3. Design points of the designed product: in shape. 4. Pictures or photos best indicating the design points: perspective view. 5. Other conditions to be explained: the reference diagram in use state is used to show the folding storage state of the magnetic glasses accessory. 6. Other conditions to be explained: the part coated with red semi-transparent in the diagram represents the part not claimed to be protected, and the enlarged view of A is the partial enlarged view of A in the perspective view.

The invention discloses a pair of functional glasses with myopia prevention and astigmatism training functions, which comprises a main frame, telescopic locking adjusting assemblies are sleeved in two sides of the main frame, and the tail ends of the adjusting assemblies are hinged to glasses leg assemblies (comprising side frames and telescopic legs); a nose support and an n-shaped lens guide frame are arranged on the lower surface of the main frame, and two sets of lockable lens assemblies are connected to the lower surface of the lens guide frame in a sliding mode. A lens main body of the lens assembly is provided with a central optical area (correcting retinal center defocus), a vertical upper concave lens area (a fan-shaped annular concave lens, and the area ratio of the concave lens to a blank area is 2: 3-3: 2), a nasal side / bitamporal diffraction area (a high-filling-density convex lens) and a vertical lower edge comfortable area (a low-filling-density convex lens). The myopia prevention and astigmatism training device can adapt to different facial forms, myopia prevention and astigmatism training are flexibly achieved, abnormal extension of the ocular axis is restrained through a dynamic defocus signal, the prevention and control effect can still be maintained when the glasses slide down or the degree rises, and the use stability and comfort are improved.

The utility model relates to the technical field of glasses, and discloses a novel metal rubber-sleeved glasses structure, which comprises two rubber glasses frames, two metal glasses frames, receding grooves, clamping grooves, a rubber nose bridge and a metal nose bridge, the rubber glasses frames are two in number, the metal glasses frames are two in number, the rubber nose bridge is arranged between the two rubber glasses frames, and the metal nose bridge is arranged between the two metal glasses frames. The rubber glasses frames are symmetrically arranged about the center line of the rubber nose bridge, the metal nose bridge is installed between the two metal glasses frames, the metal glasses frames are symmetrically arranged about the center line of the metal nose bridge, the rubber glasses frames are provided with the clamping grooves and the receding grooves, the clamping grooves are used for installing the metal glasses frames, and the receding grooves are used for receding the metal glasses frames. And the abdicating groove is used for abdicating the metal mirror frame. The glasses technology is reasonably designed, and the rubber glasses frame, the metal glasses frame, the receding grooves, the clamping grooves, the rubber nose bridge and the metal nose bridge are adopted, so that the glasses can be fixed without screws, the manufacturing process of the glasses frames is simplified, time and labor are saved, the cost is reduced, and the glasses are not easy to loosen.

The utility model belongs to the technical field of mask production, and particularly relates to a mask nose bridge strip conveying device which comprises a support, a guide seat connected to the outer side of a connecting frame, a guide frame connected to the top of the support, a cutter component connected to the connecting frame and used for cutting off an input nose bridge strip, and a push plate component arranged on the support and corresponding to the tail end of the cutter component. The guide wheel component is installed on the support and conveys the nose bridge strip, a linkage gear set composed of a driving wheel and a driven wheel is driven by a motor to rotate, feeding rollers which are correspondingly arranged up and down are made to rotate, the input nose bridge strip is conveyed to the cutter component, and the driving motor drives a first eccentric shaft to rotate and is matched with a first eccentric rod, so that the nose bridge strip is cut off. According to the nose bridge strip cutting device, the sliding frame drives the cutter to move up and down, the input nose bridge strip is cut off, feeding, cutting and discharging are integrated, the working efficiency is guaranteed, and meanwhile the overall occupied area of the device is reduced.

The utility model provides a double-girder ascending type movable formwork. The double-girder ascending type movable formwork comprises girders, a nose bridge, a suspension system, a rear longitudinal moving system, a walking mechanism, a front supporting leg, a middle supporting leg and a formwork system. The two groups of main beams are connected through the transverse connecting piece, and the two groups of nose bridges are connected with the main beams respectively; each group of suspension system comprises a cross beam, a suspended beam and a suspender, and the cross beam penetrates through the two groups of main beams; suspended beams are arranged on the two sides of the cross beam on the outer sides of the two main beams respectively and movably fixed to the cross beam, and the suspender penetrates through and is fixed to the cross beam and connected with the two ends of the suspended beams; the rear longitudinal moving system is located at the tail parts of the main beams, the two groups of walking mechanisms are respectively connected with one group of main beams, the two groups of middle supporting legs are respectively connected with one group of main beams, and the two groups of front supporting legs are respectively connected with one group of nose bridges. According to the utility model, the walking mode of the ascending type movable formwork and the formwork opening mode of the descending type movable formwork are combined, so that the continuous operation of bridge construction can be efficiently carried out in a smaller clearance space.

The utility model discloses an outward turning type optical spectacle frame which comprises a spectacle frame body and pile heads welded and fixed at two ends of the inner side of the spectacle frame body, and one end of each pile head is rotatably connected with a spectacle leg through a vertically arranged hinge piece; silica gel sleeves with a protection effect are embedded into the outer sides of the glasses legs, an eversion mechanism is arranged at the front side position of the glasses frame body, the eversion mechanism works to drive the glasses frame to rotate at the front end position of the glasses frame body, and a nose support block is arranged at the nose bridge position of the glasses frame body. The nose pad block is mounted on one side of the spectacle frame body through an adjusting mechanism. According to the everted optical spectacle frame, the everted mechanism is arranged, the angle of the spectacle frame can be adjusted on the outer side of the rotating block through the half tooth block by arranging the everted mechanism, sunglasses in the spectacle frame can be located in front of the spectacle frame body, and the phenomenon that the spectacle frame shakes can be avoided by arranging the rotating block; therefore, the use is convenient.

This invention provides a smart glasses for myopia prevention and control in teenagers, relating to the field of smart glasses technology. It includes a nose bridge and a frame. The nose bridge houses a main control module, and an auxiliary camera module is mounted on the top of the nose bridge to capture the wearer's facial expressions. Ambient light sensors are mounted on the top of the front sides of both sides of the frame, and temple mounting heads are mounted on both sides of the frame. Ultraviolet sensors are mounted on the outer sides of the temple mounting heads. Composite lenses are snapped into the inside of the frame. A main control system is embedded within the main control module. This invention utilizes the auxiliary camera module, ambient light sensor, ultraviolet sensor, biosensor, and non-contact eye posture sensor to comprehensively collect multi-dimensional data such as facial expressions, ambient light, ultraviolet intensity, physiological indicators, and eye posture, providing rich and accurate information for subsequent analysis and decision-making.

In adhesive crossings used in railway switches, the aim is to obtain a structure that strengthens the joint between the long and short nose rail sections constituting the nose rail, thereby improving durability. [Solution] In an adhesive crossing equipped with a nose rail formed by joining a long nose rail section 11 and a short nose rail section 12, the long nose rail section 11 and the short nose rail section 12 use special rails having a thickness that does not create a recess on the stomach side of the contact surface, the joining surface F of the long nose rail section 11 and the short nose rail section 12 is made into a continuous surface from the bottom to the top, and adhesive is applied to the joining surface F to bond them together. Furthermore, if necessary, bolt holes 70 are drilled between the long nose rail section 11 or the short nose rail section 12 and a splice material 50 placed on the outside, and bolts 81 are inserted through the bolt holes 70 and tightened with nuts 91 to apply pressure to the adhesive-coated joining surface F and firmly bond them together.

The utility model relates to a pair of glasses convenient to replace lenses in different shapes, which comprises pile heads, a nose bridge frame and glasses legs rotatably connected with the pile heads, a placing frame is fixedly connected below the pile heads, two ends of the placing frame are respectively and fixedly connected with the pile heads and the nose bridge frame, the placing frame is provided with a glasses frame, and the glasses frame is provided with a lens. The glasses frame is detachably connected with the placing frame, magnets are fixed on the glasses frame, magnets corresponding to the magnets of the glasses frame are arranged on the pile heads and the nose bridge frame respectively, when the lenses need to be replaced, the glasses frame is separated from the placing frame, the glasses frame is taken down, and then the lenses in other shapes and the glasses frame are placed on the placing frame. And the magnets are fixedly connected with the magnets in an adsorption manner, so that the effect of replacing different lenses is achieved.

The utility model provides a pair of glasses capable of quickly arranging or disassembling an expansion device, which comprises a pair of end pieces, the end pieces are respectively arranged on two outer sides of a front frame, a concave seat is arranged on a first surface, facing a wearer, of each end piece, the concave seats extend to the end surfaces to form end surface openings, the concave seats are provided with layer plates, mounting seats and through holes are arranged on the layer plates, and magnetic parts are embedded in the mounting seats; each hinge is provided with a head end and a tail end, the head end is provided with a cover plate and a sealing plate, and the tail end is provided with a hinging part hinged to the glasses legs; the cover plate of the hinge corresponds to and is embedded in the concave base to shield the magnetic piece, and the sealing plate seals the opening of the end face and is screwed and fixed to the through hole of the laminate through a screw. According to the utility model, a magnetic bearing and positioning structure is formed on the nose bridge, the left ear and the right ear through stable three-point positioning of the glasses, so that the expansion device capable of being magnetically attracted can be quickly erected or folded.

The utility model discloses a pair of telescopic nose pad bluetooth sunglasses, which relates to the technical field of sunglasses and comprises a glasses frame, a nose pad mechanism is movably mounted at the nose bridge part of the glasses frame, the nose pad mechanism comprises a connecting rod, a pad and a control block, the control block is rotatably mounted inside the glasses frame, convex threads are arranged on the outer wall of the connecting rod, and the convex threads are matched with the nose pad mechanism. By rotating the control block, due to threaded connection, the connecting rod can move in the mirror frame in the sliding direction so as to drive the supporting pad to move, the limiting protruding strips can determine the moving route of the connecting rod, the position of the supporting pad can be accurately adjusted, and the supporting pad can be conveniently moved. The control block is arranged on the outer side of the glasses frame, namely the front face of the glasses frame, operation is convenient, the adjusting process is stable, the individual requirements of different users for the positions of the nose pads can be met, when the connecting rod needs to be retracted, only the control block needs to be rotated reversely, and the maximum retracting limit can be determined through the limiting block during retracting.

This invention relates to the field of optical components and provides a pair of far-infrared nanomaterial functional glasses for biophoton-targeted cell activation. The glasses include a frame, lenses, nose pads, and temples. The nose pads are connected to the frame and threaded into the inner wall of a threaded groove. The temples are rotatably connected to the screw, and a gear is fixed to the upper end of the screw. A slider is slidably connected to the inner wall of a transmission cavity, and the slider is connected to the inner wall of the transmission cavity via a second spring. A pusher is connected to the slider, and a first permanent magnet is slidably connected to the pusher. A rack is fixed to the first permanent magnet. A third and fourth permanent magnet are fixed to the inner wall of the transmission cavity. The two frames are fixed together via a nose bridge. The frame, nose pads, and temples are made of far-infrared nanomaterials. The lenses consist of a lens substrate and a tourmaline powder film connected sequentially. The lens substrate is made of polycarbonate. This invention can target and activate cells, promote cell metabolism, and repair eye fatigue.

The utility model discloses a ring-diameter-adjustable try-on spectacle frame, belongs to the technical field of try-on spectacle frames, and solves the problems that an existing device cannot fix lenses of different specifications and is inconvenient for a patient to experience wearing feelings of lenses of different sizes, the ring-diameter-adjustable try-on spectacle frame comprises a nose frame, symmetrically distributed spectacle frames are fixedly mounted on two sides of the nose frame, and the ring-diameter-adjustable try-on spectacle frame is arranged on the nose frame. The mirror frame is square outside and round inside, a rectangular groove is formed in the middle of the side wall of an inner ring of the mirror frame, three mirror matching grooves distributed in a linear array mode are formed in the top face of the mirror frame, the three mirror matching grooves are communicated with the rectangular groove, and a fixing assembly is arranged in the rectangular groove. Then the threaded rod is driven to rotate through the rotary knob, the clamping blocks can be driven to move towards the two sides of the lenses, the purpose of clamping and fixing the lenses is achieved, the purpose of conveniently clamping and fixing the lenses of different specifications is achieved, and a patient can conveniently replace the lenses of different specifications for wearing experience.

The utility model provides foldable glasses which comprise a glasses frame, a pair of connecting pieces and a pair of glasses legs, one fixed end of each connecting piece is assembled with the glasses frame through a fixing assembly, and the other end of each connecting piece is in pivot connection with a spring hinge of the corresponding glasses leg through a second pivot piece; the spectacle rings of the spectacle frame are pivoted with the nose bridge, and the spectacle leg rods of the spectacle legs are pivoted with the spectacle legs, so that when a user needs to store the spectacles, the spectacle frame and the spectacle legs can be folded to achieve the minimum storage volume, and the spectacles are convenient to carry by the user; moreover, the spring hinges of the glasses legs can provide a larger-angle opening and closing stroke for the glasses legs, so that the head of the user can be prevented from being continuously pressed by the glasses legs when the user wears the glasses, and the wearing comfort is further improved.

An example collapsible charging case for a pair of smart glasses comprises a foldable component that is configured to operate in two states, including: a folded state that defines a first internal volume, and an unfolded state that defines a second internal volume that is greater than the first interior volume, and the second interior volume being configured to house a pair of smart glasses. The collapsible charging case also includes a deployable mechanism configured to contact a nose bridge portion of a pair of smart glasses, and the deployable mechanism is configured to operate in two states, including: an undeployed state that occurs when the foldable component of the collapsible charging case is in the first foldable state, and a deployed state that occurs when the foldable component of the collapsible charging case is in the second foldable state.

The utility model relates to the technical field of respirators, in particular to a fireman air respirator mask communication sound amplifying device, which comprises a mask main body, a communication sound amplifying device and a communication sound amplifying device, the dual-mode noise reduction microphone is embedded in the nose bridge of the mask main body; the flexible circuit board is mounted on the inner wall of the mask main body and is in signal connection with the dual-mode noise reduction microphone; the sound amplification loudspeaker is mounted at the lower jaw position of the mask main body, and the sound amplification loudspeaker directionally conducts sound through an acoustic flow guide cavity in the sound amplification loudspeaker; the connecting mechanisms are installed on the mask body and used for enabling the mask body to be stably worn on the head, and the number of the connecting mechanisms is at least one set; the alarm mechanism is mounted on the mask body and used for detecting stable fit between the mask body and the face; the magnetic control power supply mechanism is mounted on the mask main body, and the magnetic control power supply mechanism is electrically connected with the flexible circuit board; the noise reduction effect is high, and sound transmission is stable.

The present invention provides a nose bridge hopper. The hopper body of the nose bridge hopper includes a left part of the hopper body and a right part of the hopper body, and the two are of a split structure. The left part of the hopper body includes a U-shaped hole and a left cavity of the hopper body. The side surface of the left part of the hopper body is an inclined surface, and the U-shaped hole is connected to the inclined surface. The other side of the left part of the hopper body is the left cavity of the hopper body. The side surface of the right part of the hopper body is a smooth arc surface, and the other side is the right cavity of the hopper body. The left cavity of the hopper body and the right cavity of the hopper body form the hopper cavity of the nose bridge hopper, and the cavity of the hopper is inclined downward with respect to the bottom surface. The hopper cavity includes a through hole at the front end and a U-shaped groove at the rear end. The overall size of the hopper cavity of the nose bridge hopper gradually decreases from the front end to the rear end of the hopper cavity. By designing the nose bridge hopper into a split structure, the present invention can effectively alleviate the instability of the pendulum line and the coiling line before the nose bridge hopper, improve the bending problem of the nose bridge strip at the nose bridge hopper, thereby solving the blockage problem of the nose bridge hopper, reducing the material loss of the mask machine, and improving the production efficiency of the flat mask machine.