A flat mask machine

Abstract

The invention relates to the technical field of mask machines, and in particular to a flat mask machine, comprising a feeding rack, a mask body sheet making machine and an ear band welding machine, wherein one end of the mask body sheet making machine is connected to the feeding rack, and the other end of the mask body sheet making machine is connected to the ear band welding machine; the feeding rack comprises a main frame and a cloth rod group for hanging a coil, a nose bridge strip reel, a cloth adjusting device, a coil brake device, a material guide rod and a guide rod group for guiding raw material feeding, which are arranged on the main frame; the feeding rack can be used to place mask cloth, the mask body sheet making machine can realize the manufacture of the mask body, and the ear band welding machine can weld the mask body and the ear band together to form a complete mask, and the overall automatic production has a high degree of automation, does not require manual operation, saves time and labor costs, and improves production efficiency, and also reduces the production process of the mask, and optimizes the production process of the mask.

Description

Technical Field

[0001] The present invention relates to the technical field of mask machines, and in particular to a flat mask machine. Background Art

[0002] Existing mask production lines have many processes, low efficiency, low degree of automation, and occupy a large area. Therefore, the production capacity is not high and cannot cope with the huge demand for masks in emergency situations, such as a sudden outbreak of an infectious disease. Summary of the invention

[0003] The purpose of the present invention is to provide a flat mask machine with high efficiency, high degree of automation, large production capacity and small footprint in view of the shortcomings of the prior art.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] Provided is a flat mask machine, comprising a feed rack, a mask body sheet making machine and an ear strap welding machine, wherein one end of the mask body sheet making machine is connected to the feed rack, and the other end of the mask body sheet making machine is connected to the ear strap welding machine;

[0006] The unloading rack includes a main frame and a cloth rod group for hanging the coil, a nose bridge reel, a cloth adjustment device, a coil brake device, a material guide rod and a guide rod group for guiding the raw material feeding. The guide rod group is provided with a plurality of guide rods and is stacked on one side of the main frame and close to the mask body sheet making machine;

[0007] The mask sheet making machine includes a frame, a pre-folding device installed on the frame and arranged in sequence, a cloth folding device, a nose bridge strip conveying device, a mask forming and welding device and a transition conveying device; the pre-folding device includes two pre-folding forming rollers correspondingly arranged up and down for performing preliminary folding on the mask, each pre-folding forming roller is provided with a plurality of parallel convex teeth, the convex teeth of the two pre-folding forming rollers are in meshing shape, and the rotation directions of the two pre-folding forming rollers are opposite; the cloth folding device includes at least three cloth folding plates stacked up and down, namely a first cloth folding plate, a second cloth folding plate and a third cloth folding plate, the first cloth folding plate, the second cloth folding plate and the third cloth folding plate are all divided into two, and the dividing lines of the three cloth folding plates are staggered; the nose bridge strip conveying device includes an The invention relates to a bottom plate, and a folding assembly installed on the bottom plate for folding the two sides of the mask, and a cutting frame group for cutting the bridge of the nose; the mask forming and welding device comprises two side plates, and the two side plates are parallel and fixed on the upper surface of the workbench on the frame at intervals; the mask forming and welding device comprises an edge banding flower roller group, a flower roller group, a cutting knife roller group, a discharge roller group for discharging the mask fabric, and a first edge banding ultrasonic welding mechanism and a second edge banding ultrasonic welding mechanism installed on the frame, the first edge banding ultrasonic welding mechanism is located below the edge banding flower roller group, and the second edge banding ultrasonic welding mechanism is located below the flower roller group; the edge banding flower roller group comprises a flower roller core shaft hinged with the two side plates and a flower roller core shaft sleeved on the frame. Two first edge-sealing flower rollers are arranged at intervals outside the flower roller core shaft, each of which is provided with a first edge-sealing convex tooth annularly distributed on the outside of the first edge-sealing flower roller, and the first edge-sealing ultrasonic welding mechanism includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer connected to the first ultrasonic generator, and a first welding head connected to the top of the first transducer and converting electrical energy into high-frequency vibration mechanical energy through the first transducer, and the first welding head is arranged corresponding to the first edge-sealing convex tooth; the flower roller group includes a flower roller core shaft hinged to two side plates, and a second edge-sealing flower roller sleeved outside the flower roller core shaft, the second edge-sealing flower roller is provided with a second edge-sealing convex tooth extending along its length direction, and the second edge-sealing ultrasonic welding mechanism includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer connected to the first ultrasonic generator, and a first welding head connected to the top of the first transducer and converting electrical energy into high-frequency vibration mechanical energy through the first transducer, and the first welding head is arranged corresponding to the first edge-sealing convex tooth. The acoustic welding mechanism includes a second ultrasonic generator connected in sequence from bottom to top, a second transducer connected to the second ultrasonic generator, and a second welding head connected to the top of the second transducer and converting electrical energy into high-frequency vibration mechanical energy through the second transducer. The second welding head is arranged corresponding to the second edge-sealing convex teeth. The cutting roller group includes a cutting roller and a knife pad roller which are distributed up and down and hinged to two side plates at both ends. The mask fabric can pass through the gap between the cutting roller and the knife pad roller, and the cutting roller is provided with a cutting knife for cutting the mask fabric; the transition conveying device is located at the outlet of the mask forming welding device, and the transition conveying device includes a round belt for conveying the mask and a reduction motor capable of driving the round belt transmission;

[0008] The ear band welding machine includes a base frame and a tray conveying device, an ear band welding device, an ear band wire passing device, an ear band material guiding device, a scissor mechanism, an ear band pulling device, a finished product discharging and unloading device and a finished product receiving and conveying device installed on the upper surface of the base frame. The tray conveying device is used to convey the mask fabric. The ear band welding device is located above the tray conveying device. The ear band wire passing device, the ear band material guiding device and the ear band pulling device are all installed on both sides of the tray conveying device; the ear band welding device includes a tooth pressing welding head mechanism, an ear band descending mechanism, an ear band rotating mechanism, a first ear band ultrasonic welding mechanism and a second ear band ultrasonic welding mechanism which are arranged in sequence from top to bottom. The tooth pressing welding head mechanism includes a cylinder and a first tooth pressing welding head and a second tooth pressing welding head connected to the cylinder. The first ear band ultrasonic welding mechanism is located at the first tooth pressing welding head. Below the welding head, the second ear band ultrasonic welding mechanism is located below the second tooth-pressing welding head, the ear band rotating mechanism is provided with two, the two ear band rotating mechanisms are respectively located on the outside of the first tooth-pressing welding head and the outside of the second tooth-pressing welding head, and the lower end of the ear band rotating mechanism is connected with an ear band grabbing mechanism for grabbing the ear band; the wire-passing side plate of the ear band passing device is fixed on the long side of the large top plate of the tooth-pressing welding head mechanism, and the ear band passing device includes a wire pulling wheel group and a shaking coil; the ear band material guiding device includes a material guiding bracket, a material guiding wheel and a wire-passing elastic strip, and the material guiding wheel and the wire-passing elastic strip are fixed to the material guiding bracket by bolts; the ear band pulling device includes an ear band fixing block, an ear band pressing block and a cylinder clamp; the scissors mechanism is installed above and behind the ear band fixing block of the ear band pulling device, and the scissors mechanism includes scissors for cutting the ear band.

[0009] Among them, the pre-folding device also includes a pre-folding mounting frame fixedly connected to the upper surface of the frame, the pre-folding mounting frame is provided with a plurality of cloth guide wheels arranged in sequence for guiding the cloth to move forward, the pre-folding forming roller is located on one side of the cloth guide wheel and the pre-folding forming roller is installed on the pre-folding mounting frame; a pad is provided between the first cloth folding plate, the second cloth folding plate and the third cloth folding plate, and the distance between the cloth folding plates corresponding to the other set of insert mechanisms is adjusted by a cloth folding adjustment seat installed in the cloth folding fixed seat groove; the folding assembly includes two cloth folding pieces arranged in parallel and a cloth pressing plate located between the two cloth folding pieces, the bottom of the cloth folding piece is fixedly connected to the mounting base plate, the upper end of the cloth folding piece is at a certain angle to the mounting base plate, and a gap is provided between the cloth pressing plate and the mounting base plate to facilitate the passage of mask cloth; the angle between the upper end of the cloth folding piece and the mounting base plate is less than or equal to ninety degrees.

[0010] Wherein, the cutting knife frame group includes a cutting knife frame and a slider adjustment seat fixedly connected to the upper surface of the mounting base plate, the slider adjustment seat is arranged at the right position on the mounting base plate, the cutting knife frame is fixed to the inner position of the slider adjustment seat through a connecting plate and the cutting knife frame is located on the upper surface of the cloth pressing plate, the nose bridge strip conveying device also includes a nose bridge guide sleeve, and the nose bridge guide sleeve is fixed to the discharge end of the upper side of the cutting knife frame through a fixing rod; the slider adjustment seat includes a slider seat and an adjustment plate connected to the top of the slider seat, two slide grooves are arranged between the slider adjustment plate and the slider seat, and each slide groove is provided with a An adjusting screw for adjusting the height in the section slide, a nose bridge feeding wheel group and a nose bridge cutting wheel group are arranged on the slider adjusting seat, the nose bridge feeding wheel group and the nose bridge cutting wheel group are connected by gear transmission, the nose bridge cutting wheel group and the nose bridge feeding wheel group are respectively installed in two slides, a positioning sleeve is arranged on the slide seat of the nose bridge cutting wheel group, a mold compression spring and a movable sleeve are arranged on the slide seat of the nose bridge feeding wheel group, the positioning sleeve is supported by the adjusting screw to adjust the cutting gap of the nose bridge cutting wheel group, the compression amount of the mold compression spring is adjusted by supporting the movable sleeve with the adjusting screw, and the nose bridge feeding wheel and the bearing mounted on the cutting knife frame are adjusted. The size of the gap can be adjusted to adjust the size of its dynamic friction; the nose bridge feeding wheel group includes a slide seat, a bearing, a feeding shaft, a nose bridge feeding wheel, a spacer and a feeding gear. The feeding shaft is fixed in the inner holes on both sides of the slide seat by means of matching bearings. The inner end of the feeding shaft close to the slider seat is equipped with a nose bridge feeding wheel, and the outer end of the feeding shaft close to the slider seat is installed with a feeding gear through a spacer; the nose bridge cutting wheel group includes a slide seat, a bearing, a cutting shaft, a nose bridge cutting wheel, a nose bridge strip cutting knife, a spacer, a cutting gear and a sprocket. The cutting shaft is fixed in the inner holes on both sides of the slide seat by means of matching bearings. The cutting shaft is close to the slider seat A nose bridge cutting wheel is installed at the inner end, and the nose bridge strip cutter is fixed in the groove of the nose bridge cutting wheel by a fixing screw. The cutter gear is installed at the outer end of the cutter shaft close to the slider seat through a spacer. The cutter gear is aligned with the side of the transition gear and the feeding gear, and a sprocket is installed at the tail of the outer end of the cutter shaft close to the slider seat; the nose bridge strip conveying device also includes a transition gear group, which includes an adjusting seat, a bearing and a transition gear. The transition gear is fixed on the shaft of the adjusting seat through a bearing, and the transition gear group is installed in the middle position of the transition between the nose bridge feeding wheel group and the nose bridge cutting wheel group, and is fixed on the outer side of the slider seat.

[0011] Among them, the mask forming and welding device also includes a first pulling roller group, a second pulling roller group and a discharging roller group, the first pulling roller group is located between the edge banding flower roller group and the flower roller group, the second pulling roller group is located between the flower roller group and the cutting knife roller group, the first pulling roller group and the second pulling roller group both include a first pulling roller and a second pulling roller distributed up and down, and the gap between the first pulling roller and the second pulling roller is adjusted by an adjusting screw; the discharging roller group is located at the outlet end of the cutting knife roller group, and the discharging roller group includes an adjusting screw The adjusting screw has a first discharge roller and a second discharge roller which are arranged vertically and horizontally. The lower end of the adjusting screw is provided with a spring compression sleeve, a mold compression spring and a spring positioning sleeve. The gap between the first discharge roller and the second discharge roller is adjusted by compressing the mold compression spring through the adjusting screw. The transition conveying device comprises a main frame which is composed of a left side plate, a right side plate, a cushion sleeve, a feeding wheel shaft and a discharge plate. The reduction motor is fixed to the outer side of the left side plate through a motor connecting plate. The left side plate is provided with a speed regulator mounting plate for installing the speed regulator. The output shaft of the reduction motor is provided with a main synchronous The step wheel, the main synchronous wheel transmits torque and speed to the small synchronous wheel through the synchronous belt, the small synchronous wheel is coaxially installed with the second feeding wheel and the first pulley, the second feeding wheel is connected to the driven pulley through a flat belt, the driven pulley is installed at the lower right of the second feeding wheel, leaving a small movement gap with the discharge plate, a first pulley and a second pulley are installed at the upper right of the first pulley, and the first pulley and the second pulley coaxial with the second feeding wheel are installed on the same straight line of the right side plate, the first pulley is connected to the second pulley through the round belt, and another first pulley is installed on the second belt The lower left side of the wheel and the outer tight edge of the round belt make the rotation direction of the first pulley coaxial with the second feeding wheel opposite; the counter-rotating first pulley is coaxially installed with the third feeding wheel, and the fourth feeding wheel is installed at the lower right of the third feeding wheel and above the discharge plate, leaving a gap between the discharge plate and the discharge plate, and close to the output end; the discharge plate is installed at the lower right of the driven pulley, below the fourth feeding wheel, and on the right end side of the output end. The first feeding wheel is connected to the second discharge roller of the forming section of the mask body machine with a round belt, and a tensioning wheel is arranged on the inner side of the loose edge of the round belt connected to the second discharge roller end.

[0012] Among them, the first earband ultrasonic welding mechanism includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer connected to the first ultrasonic generator, and a first welding head connected to the top of the first transducer and converting electrical energy into high-frequency vibration mechanical energy through the first transducer, and the first tooth-pressing welding head is arranged correspondingly to the first welding head up and down; the second earband ultrasonic welding mechanism includes a second ultrasonic generator connected in sequence from bottom to top, a second transducer connected to the second ultrasonic generator, and a second welding head connected to the top of the second transducer and converting electrical energy into high-frequency vibration mechanical energy through the second transducer, and the second tooth-pressing welding head is arranged correspondingly to the second welding head up and down; the tray conveying device is provided with a servo motor, a reducer, a synchronous belt transmission mechanism, four double-row sprocket assemblies fixed on the frame and arranged in a trapezoidal space, a conveying chain with a bent plate, and a plurality of trays arranged side by side fixed on the conveying chain with a bent plate by screws.

[0013] The ear band welding device is fixed to the working table of the frame through a pillar, a large top plate is provided on the top of the pillar, an upper fixed plate is provided above the large top plate, the upper fixed plate is fixedly connected to the large top plate through four connecting rods, and the pressure gear welding head mechanism is provided with a cylinder drive fixed to the upper fixed plate, and the cylinder drives the sliding rods of the four linear bearing groups to move through the connecting screw, the connecting sleeve, the connecting block and the movable connecting plate, and the four sliding rods are respectively connected to the first welding head fixing block and the second welding head fixing block, and the first welding head fixing block and the second welding head fixing block are respectively connected to the first A tooth pressing welding head and a second tooth pressing welding head; two buffer columns are installed on the lower bottom surface of the upper fixed plate; the ear band descending mechanism is driven by a cylinder fixed in the middle of the large top plate, and two groups of linear bearing groups spaced and symmetrically arranged are fixed on the upper side of the large top plate, and the ear band descending mechanism also includes a fixed block, a cushioning block and a long movable plate, the cylinder connects the fixed block and the cushioning block through a connecting rod and a cylinder connecting piece, and the long movable plate is fixedly connected to the cushioning block and the sliding rod of the two groups of linear bearing groups by bolts; the ear band rotating mechanism is fixed on the long movable plate of the ear band descending mechanism.

[0014] The pull-ear belt device includes a connecting base plate, a motor seat, a servo motor, a synchronous belt, a main synchronous wheel, a driven synchronous wheel, a linear guide, a bearing support, a cylinder bracket, an adjustment base plate, a cylinder pull-ear belt mechanism and a code block. The cylinder pull-ear belt mechanism includes a synchronous belt pressure plate, a connecting block, a pneumatic finger and the cylinder clamp. The lower bottom surface of the synchronous belt pressure plate is fixed on the slider of the linear guide. The upper side of the synchronous belt pressure plate clamps the synchronous belt through the connecting block. One end of the connecting block is connected to the pneumatic finger. Two symmetrical cylinder clamps are installed on the clamping jaws of the pneumatic finger. The servo motor equipped with the main synchronous wheel is connected to the pneumatic finger through the The motor seat is fixed at the tail end of the connecting base plate, and the driven synchronous wheel at the other end is connected through the clamped synchronous belt and the cylinder ear belt pulling mechanism. The driven synchronous wheel is fixed to the bearing supports at both ends through the rotating shaft and the bearings at both ends. The two bearing supports are fixed to the connecting base plate by screws. The ear belt fixing block is fixed to the output end of the cylinder. The ear belt pressure block is pushed by the cylinder piston rod to move in the groove of the ear belt fixing block. The cylinder is fixed to the end of the connecting base plate through the cylinder bracket and the adjusting base plate. The cylinder ear belt pulling mechanism is equipped with an induction sheet, and an induction switch is installed on the front and back of the inner side of the connecting base plate.

[0015] Wherein, the scissors mechanism is fixed on the ear strap welding device through two connection and fixing blocks set at a distance. The scissors mechanism includes a connection and fixing block, a support rod, a cylinder seat, a cylinder, a scissors seat, a connection block, a scissors center axis, a sliding shaft, a spring sleeve, a scissors, a cushion sleeve and a bearing. The inner sides of the two connection and fixing blocks installed on the pillars of the ear strap welding device are provided with inner holes, and the support rod is fixed to the inner holes. The inner holes of the two cylinder seats pass through the support rod and are locked on the support rod with screw clamps. The two ends of the cylinder are fixedly connected to the cylinder seat and the scissors seat respectively, the cylinder seat is fixedly connected to the support rod, and the end of the cylinder piston rod is fixed to one end of the connection block. The connection block installed at the end of the cylinder piston rod forms a hinge connection with the scissors through the scissors middle axis and a sliding shaft. The scissors middle axis is a hollow shaft structure. The sliding shaft passes through the scissors and the scissors middle axis. The scissors are fastened by the step of the sliding shaft and the end face of the scissors middle axis. The other end of the sliding shaft is equipped with the bearing so that the sliding shaft can slide guidedly in the waist-shaped groove of the scissors seat. The sliding shaft is equipped with a spring sleeve, a spring, a gasket and a locking nut to tightly fasten the bearing. Four sleeves are fixed in the waist-shaped groove of the scissors seat with screws. Two bearings are installed at the other end of the sleeve. The bearings provide guide limit for the scissors movement and control the opening and closing size of the scissors.

[0016] The gear train is a gear unit that is mounted on the drive shaft and the transmission gear is mounted on the drive shaft to move the gear train to a desired location. The transmission gear is meshed with a driven gear, and the driven gear is fixed to the driven shaft of the gear transmission end side plate by a set screw, and four flat belts are respectively connected to four driven pulleys installed on the inner sides of the motor end side plate and the gear transmission end side plate through four flat belts to form a belt clamping transmission group; the tail end sides of the motor end side plate and the gear transmission end side plate are fixedly connected by a cylinder connecting plate, and a cylinder is installed in the middle upper inner hole on the cylinder connecting plate, and two guide members and two cylinder top plate guide pillars are symmetrically installed in the lower inner hole of the cylinder connecting plate, and the two cylinder top plate guide pillars pass through the inner holes of the two guide members, and the two cylinder top plate guide pillars are connected through the two inner holes of the push block, and are fixed to the piston rod output end of the cylinder to form an isosceles triangle space arrangement;The finished product receiving and conveying device comprises a transmission profile frame, a first conveying wheel group, a second conveying wheel group, a wide flat belt, a reduction motor and a mounting plate, a speed regulator, a first V-type pulley, a second V-type pulley, a V-belt and a material baffle plate. The first conveying wheel group and the second conveying wheel group are respectively fixed to the head end and the tail end of the transmission profile frame through their respective mounting plates and bearings. The reduction motor is fixed to the profile column at the head end of the transmission profile frame through the mounting plate. The inner hole of the first V-type pulley is fixed to the output shaft of the reduction motor through a fastening screw. The second V-type pulley is connected to the conveying shaft of the first conveying wheel group of the transmission profile frame and is connected to the first V-belt pulley through a V-belt. The speed regulator is mounted on the profile column at the head end of the transmission profile frame through the mounting plate, the first conveying wheel group is connected to the second conveying wheel group through the wide flat belt, the baffle plate is mounted on the inner side of the horizontal aluminum profile at the head end of the transmission profile frame, the head end of the finished product receiving and conveying device is mounted at the discharge position just below the finished product discharging and unloading device, the baffle plate is directly opposite to the lower right of the driven shaft of the finished product discharging and unloading device, and the baffle plate is spaced from the driven shaft, the molded masks after the finished product discharging and unloading device is unloaded are thrown to the head of the finished product receiving and conveying device, and the baffle plate blocks the thrown masks and accurately falls on the wide flat belt of the finished product receiving and conveying device. ;

[0017] Among them, it also includes a limit device and a pressure mask device, the limit device is fixed to the workbench by bolts, the limit device is provided with a limit plate, an outer limit side plate, a second outer limit side plate, an inner limit plate and a protective cover; the pressure mask device includes a connecting column, a transverse connecting plate and a clamping plate, the limit device is fixedly installed on the two outer sides of the pressure mask device, one end of the clamping plate is fixed to the middle position of the transverse connecting plate by screws, and the other end of the clamping plate falls freely on the tray of the tray conveying device.

[0018] Beneficial effects of the present invention:

[0019] 1. The material discharging rack can be used to place the mask fabric. The mask body sheet making machine can realize the production of the mask body. The ear strap welding machine can weld the mask body and the ear strap together to form a complete mask. The overall automated production has a high degree of automation and does not require manual operation, saving time and labor costs, and improving production efficiency. At the same time, it also reduces the production process of masks and optimizes the production process of masks. In addition, each structure adopts a modular design with high openness. By replacing the corresponding operating mechanism, it can switch between the mask production equipment and the traditional coil inspection equipment or produce masks of different specifications. It is not only highly flexible and convenient for responding to sudden infectious diseases, but also has high economic benefits and low costs. It can realize fully automated production, significantly improving the production efficiency and capacity of masks.

[0020] 2. The operating mechanisms are distributed in an orderly manner and arranged compactly, which greatly reduces the footprint of the mask machine and is conducive to large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a flat mask machine of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the unloading rack of the flat mask machine of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the mask body sheet making machine of the flat mask machine of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the cloth folding device of the mask body sheet making machine of the flat mask machine of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the ejecting device of the mask body sheet making machine of the flat mask machine of the present invention.

[0027] Figure 6 This is a structural schematic diagram of an angle of the nose strip conveying device of the mask body sheet making machine of the flat mask machine of the present invention.

[0028] Figure 7 This is a structural schematic diagram from another angle of the nose bridge strip conveying device of the mask body sheet making machine of the flat mask machine of the present invention.

[0029] Figure 8 It is a structural schematic diagram of the nose bridge cutting wheel group of the mask body sheet making machine of the flat mask machine of the present invention.

[0030] Fig. 9 It is a structural schematic diagram of the transition gear set of the mask body sheet making machine of the flat mask machine of the present invention.

[0031] Fig.10 It is a structural schematic diagram of the nose bridge feeding wheel group of the mask body sheet making machine of the flat mask machine of the present invention.

[0032] Fig.11 It is a structural schematic diagram of the mask forming and welding device of the mask body sheet making machine of the flat mask machine of the present invention.

[0033] Fig.12 It is a structural schematic diagram of the edge sealing roller group of the mask body sheet making machine of the flat mask machine of the present invention.

[0034] Fig.13 It is a structural schematic diagram of the pattern roller group of the mask body sheet making machine of the flat mask machine of the present invention.

[0035] Fig.14 It is a structural schematic diagram of the cutting roller group of the mask body sheet making machine of the flat mask machine of the present invention.

[0036] Fig.15 It is a structural schematic diagram of the first edge-sealing ultrasonic welding mechanism of the mask body sheet-making machine of the flat mask machine of the present invention.

[0037] Fig.16 It is a structural schematic diagram of the transition conveying device of the mask body sheet making machine of the flat mask machine of the present invention.

[0038] Fig.17 It is a structural schematic diagram of the ear strap welding machine of the flat mask machine of the present invention.

[0039] Fig.18 It is a structural schematic diagram of the tray conveying device of the ear strap welding machine of the flat mask machine of the present invention.

[0040] Fig.19 It is a structural schematic diagram of the ear strap welding device of the ear strap welding machine of the flat mask machine of the present invention.

[0041] Fig. 20 It is a structural schematic diagram of the tooth pressing welding head mechanism of the ear strap welding machine of the flat mask machine of the present invention.

[0042] Fig.21 It is a structural schematic diagram of the ear strap lowering mechanism of the ear strap welding machine of the flat mask machine of the present invention.

[0043] Fig. 22 It is a structural schematic diagram of the ear strap rotating mechanism of the ear strap welding machine of the flat mask machine of the present invention.

[0044] Fig.23 It is a structural schematic diagram of the limiting device of the ear strap welding machine of the flat mask machine of the present invention.

[0045] Fig.24 It is a structural schematic diagram of the mask pressing device of the ear strap welding machine of the flat mask machine of the present invention.

[0046] Fig.25 It is a structural schematic diagram of the ear strap wire passing device of the ear strap welding machine of the flat mask machine of the present invention.

[0047] Fig.26 It is a structural schematic diagram of the ear band material guiding device of the ear band welding machine of the flat mask machine of the present invention.

[0048] Fig. 27It is a structural schematic diagram of the ear strap pulling device of the ear strap welding machine of the flat mask machine of the present invention.

[0049] Fig.28 It is a structural schematic diagram of the scissors mechanism of the ear strap welding machine of the flat mask machine of the present invention.

[0050] Fig.29 This is a structural schematic diagram of the scissors mechanism of the ear strap welding machine of the flat mask machine of the present invention from another angle.

[0051] Fig.30 It is a structural schematic diagram of the finished product discharging and unloading device of the ear strap welding machine of the flat mask machine of the present invention.

[0052] Fig.31 It is a structural schematic diagram of the finished product receiving and conveying device of the ear strap welding machine of the flat mask machine of the present invention.

[0053] Figures 1 to 31 Included:

[0054] Unwinding rack 1, main frame 1-1, fabric rod group 1-2, nose bar reel 1-3, fabric adjustment device 1-4, coil brake device 1-5, material guide rod 1-6, guide rod group 1-7;

[0055] Mask body making machine 2, frame 2-1, frame body 2-11, work table 2-12, pre-folding device 2-2, pre-folding forming roller 2-21, convex teeth 2-22, cloth guide wheel 2-23, pre-folding mounting frame 2-24, cloth folding device 2-3, first cloth folding plate 2-31, second cloth folding plate 2-32, third cloth folding plate 2-33, cloth folding fixing seat 2-34, pad 2-35, folding step adjustment seat 2-36, nose bridge conveying device 2-4, installation base plate 2-41, folding assembly 2-42, cloth folding piece 2-421, cloth pressing plate 2-422, cutting knife frame 2-431, Slider seat 2-433, adjustment plate 2-434, slide 2-435, nose guide sleeve 2-436, fixing rod 2-437, nose feed wheel set 2-44, mold compression spring 2-441, movable sleeve 2-442, slide seat 2-443, bearing 2-444, feed shaft 2-445, nose feed wheel 2-446, spacer 2-447, feed gear 2-448, nose cutter wheel set 2-45, positioning sleeve 2-451, slide seat 2-452, bearing 2-453, cutter shaft 2-454, nose cutter wheel 2-455, nose strip cutter 2-456, spacer 2 -457, cutter gear 2-458, sprocket 2-459, transition gear set 2-46, adjustment seat 2-461, bearing 2-462, transition gear 2-463, mask forming welding device 2-5, side plate 2-51, edge banding flower roller set 2-52, flower roller core shaft 2-521, first edge banding flower roller 2-522, first edge banding convex tooth 2-523, flower roller set 2-53, flower roller core shaft 2-531, second edge banding flower roller 2-532, second edge banding convex tooth 2-533, cutter roller set 2-54, cutter roller 2-541, knife pad roller 2-542, cutter 2-543, fixed Position sleeve 2-544, discharge roller group 2-55, first edge sealing ultrasonic welding mechanism 2-56, first ultrasonic generator 2-561, first transducer 2-562, first welding head 2-563, first pulling roller group 2-58, second pulling roller group 2-59, transition conveying device 2-6, main frame 2-61, discharge plate 2-62, reduction motor 2-63, main synchronous wheel 2-64, small synchronous wheel 2-65, synchronous belt 2-66, flat belt 2-67, speed regulator 2-68, top material device 2-7, support adjustment rod 2-71, top cloth shaft 2-72, top cloth roller 2-73;

[0056] Ear strap welding machine 3, base frame 3-1, work table 3-11, limit device 3-12, limit plate 3-121, first outer limit side plate 3-122, inner limit plate 3-123, shield 3-124, second outer limit side plate 3-125, pressure mask device 3-13, connecting column 3-131, horizontal connecting plate 3-132, pressing plate 3-133, tray conveying device 3-2, servo motor 3-21, reducer 3-22, synchronous belt transmission mechanism 3-23, conveying chain with bent plate 3-24, drag tray 3-25, ear strap welding device 3-3, tooth pressing welding head mechanism 3-31, ear strap descending mechanism 3-32, fixed block 3-321, pad block 3-322, long movable plate 3-323, ear strap rotating mechanism 3-3 3. Ear strap grabbing mechanism 3-331, ear strap clip 3-3311, rotating cylinder 3-332, rotating base 3-333, first ear strap ultrasonic welding mechanism 3-34, cylinder 3-341, first pressure tooth welding head 3-342, second pressure tooth welding head 3-343, first transducer 3-344, first welding head 3-345, first welding head fixing block 3-346, second welding head fixing block 3-347, buffer column 3-348, second ear strap ultrasonic welding mechanism 3-35, second transducer 3-351, second welding head 3-352, pillar 3-36, large top plate 3-361, upper fixing plate 3-362, connecting rod 3-363, connecting screw 3-365, connecting sleeve 3-366, connecting block 3-367, movable connection Plate 3-368, slide bar 3-369, ear band wire-passing device 3-4, wire-pulling wheel group 3-41, shaking coil 3-42, wire-passing side plate 3-43, wire-passing top plate 3-44, shaking wire group 3-45, wire-passing group 3-46, wire-pressing wheel group 3-47, expected wheel group 3-48, wire-conducting wheel group 3-49, ear band material guide device 3-5, material guide bracket 3-51, material guide wheel 3-52, wire-passing spring bar 3-53, scissor mechanism 3-6, scissors 3-61, connecting fixed block 3-62, support rod 3-63, cylinder seat 3-64, cylinder 3-65, scissors seat 3-66, connecting block 3-67, scissors center axis 3-68, sliding shaft 3-681, bearing 3-682, spring sleeve 3-683, cushion sleeve 3-69, bearing 3-69 1, ear belt pulling device 3-7, ear belt fixing block 3-71, ear belt pressure block 3-72, cylinder clamp 3-73, connecting base plate 3-74, motor seat 3-741, servo motor 3-742, synchronous belt 3-743, main synchronous wheel 3-744, driven synchronous wheel 3-745, linear guide 3-746, bearing support 3-747, cylinder bracket 3-748, adjustment base plate 3-749, connecting block 3-752, pneumatic finger 3-753, code block 3-76, finished product discharging and unloading device 3-8, cushion sleeve 3-81, motor end side plate 3-82, gear transmission end side plate 3-83, reduction motor 3-84, transmission shaft 3-841, driven shaft 3-842, transmission gear 3-843, driven gear 3-844,Active pulley 3-851, flat belt 3-852, driven pulley 3-853, driven pulley support rod 3-854, cylinder connecting plate 3-86, guide 3-861, cylinder top plate guide column 3-862, push block 3-863, finished product receiving and conveying device 3-9, transmission profile frame 3-91, first conveying wheel group 3-92, second conveying wheel group 3-93, wide flat belt 3-94, speed regulator 3-95, first V-type pulley 3-96, second V-type pulley 3-97, V-type belt 3-98, baffle plate 3-99. DETAILED DESCRIPTION

[0057] The present invention is further described in conjunction with the following examples.

[0058] A specific implementation of a flat mask machine of the present invention is as follows Figure 1-Figure 30 As shown, it includes a material unwinding rack 1, a mask body film making machine 2 and an ear band welding machine 3, one end of the mask body film making machine 2 is connected to the material unwinding rack 1, and the other end of the mask body film making machine 2 is connected to the ear band welding machine 3. The material unwinding rack 1 includes a main frame 1-1 and a cloth rod group 1-2 for hanging the coil, a nose bridge strip reel 1-3, a cloth adjustment device 1-4, a coil brake device 1-5, a material guide rod 1-6 and a guide rod group 1-7 for guiding the raw material feeding, and the guide rod group 1-7 is provided with a plurality of layers and is stacked on one side of the main frame 1-1 and close to the mask body film making machine 2.

[0059] The mask body sheet making machine 2 includes a frame 2-1, a pre-folding device 2-2, a folding device 2-3, a feeding device 2-7, a nose bridge strip conveying device 2-4, a mask forming and welding device 2-5, and a transition conveying device 2-6 installed on the frame 2-1 and arranged in sequence. The frame 2-1 includes a frame body 2-11 and a work table 2-12 fixedly connected to the top of the frame body 2-11, and the pre-folding device 2-2, the folding device 2-3, the feeding device 2-7, the nose bridge strip conveying device 2-4, the mask forming and welding device 2-5, and the transition conveying device 2-6 are all installed on the work table 2-12.

[0060] The pre-folding device 2-2 includes two pre-folding forming rollers 2-21 correspondingly arranged in the upper and lower parts for making preliminary folds on the mask, and each pre-folding forming roller 2-21 is provided with a plurality of parallel convex teeth 2-22, and the convex teeth 2-22 of the two pre-folding forming rollers 2-21 are in meshing state, and the rotation directions of the two pre-folding forming rollers 2-21 are opposite. The pre-folding device 2-2 also includes a pre-folding mounting frame 2-24 fixedly connected to the upper surface of the frame 2-1, and the pre-folding mounting frame 2-24 is provided with a plurality of cloth guide wheels 2-23 arranged in sequence for guiding the cloth to move forward, and the pre-folding forming roller 2-21 is located on one side of the cloth guide wheel 2-23 and the pre-folding forming roller 2-21 is installed on the pre-folding mounting frame 2-24.

[0061] A cloth folding device 2-3 and a material pushing device 2-7 are arranged on one side of the pre-folding device 2-2, and the cloth folding device 2-3 and the material pushing device 2-7 are arranged at a distance. The cloth folding device 2-3 includes at least three cloth folding plates stacked up and down, namely a first cloth folding plate 2-31, a second cloth folding plate 2-32 and a third cloth folding plate 2-33. The first cloth folding plate 2-31, the second cloth folding plate 2-32 and the third cloth folding plate 2-33 are all divided into two sets of plug-in mechanisms, and the dividing lines of the three cloth folding plates are staggered. The first cloth folding plate 2-31, the second cloth folding plate 2-32 and the third cloth folding plate 2-33 are all installed in the groove of the cloth folding fixing seat 2-34 through the cloth folding adjusting seat 2-36, and the cloth folding fixing seat 2-34 is fixed on the workbench 2-12. A pad 2-35 is provided between the first folding plate 2-31, the second folding plate 2-32 and the third folding plate 2-33, and the distance between the folding plates corresponding to the other set of insert mechanisms is adjusted by a folding adjustment seat 2-36 installed in the folding fixing seat groove.

[0062] The material pushing device 2-7 is located between the cloth folding device 2-3 and the nose bridge strip conveying device 2-4, and the material pushing device 2-7 includes a supporting adjusting rod 2-71 and a cloth pushing shaft 2-72. The bottom of the supporting adjusting rod 2-71 is fixedly connected to the frame 2-1, and the top of the supporting adjusting rod 2-71 is connected to the cloth pushing shaft 2-72. There are two supporting adjusting rods 2-71, and the cloth pushing shaft 2-72 connects the two supporting adjusting rods 2-71. The outer jacket of the cloth pushing shaft 2-72 is provided with a cloth pushing roller 2-73 in contact with the mask cloth, and the cloth pushing roller 2-73 is fixedly connected to the cloth pushing shaft 2-72 by means of bearing matching.

[0063] The nose bridge strip conveying device 2-4 and the lifting device 2-7 are arranged at a distance, and the nose bridge strip conveying device 2-4 includes a mounting base plate 2-41, and a folding assembly 2-42 installed on the mounting base plate 2-41 for folding the two sides of the mask, and a cutting frame group for cutting the nose bridge strip. The folding assembly 2-42 includes two parallel cloth folding pieces 2-421 and a cloth pressing plate 2-422 located between the two cloth folding pieces 2-421, the bottom of the cloth folding piece 2-421 is fixedly connected to the mounting base plate 2-41, the upper end of the cloth folding piece 2-421 forms a certain angle with the mounting base plate 2-41, the angle between the upper end of the cloth folding piece 2-421 and the mounting base plate 2-41 is less than or equal to ninety degrees, which is convenient for folding the side edge of the mask cloth, and a gap is provided between the cloth pressing plate 2-422 and the mounting base plate 2-41 to facilitate the passage of the mask cloth.

[0064] The cutting frame group includes a cutting frame 2-431 and a slider adjustment seat fixedly connected to the upper surface of the mounting base 2-41, the slider adjustment seat is arranged at the right position on the mounting base 2-41, the cutting frame 2-431 is fixed to the inner position of the slider adjustment seat by a connecting plate and the cutting frame 2-431 is located on the upper surface of the cloth pressing plate 2-422, the nose bridge strip conveying device 2-4 also includes a nose bridge guide sleeve 2-436, and the nose bridge guide sleeve 2-436 is fixed to the discharge end of the upper side of the cutting frame 2-431 by a fixing rod 2-437; the slider adjustment seat includes a slider seat 2-433 and an adjustment plate 2-434 connected to the top of the slider seat 2-433, two slide grooves 2-435 are arranged between the slider adjustment plate 2-434 and the slider seat 2-433, and each slide groove 2-435 is provided with a top for adjusting the slide groove 2-43 5, a nose bridge feeding wheel group 2-44 and a nose bridge cutting wheel group 2-45 are arranged on the slider adjustment seat, the nose bridge feeding wheel group 2-44 and the nose bridge cutting wheel group 2-45 are connected by gear transmission, the nose bridge cutting wheel group 2-45 and the nose bridge feeding wheel group 2-44 are respectively installed in two slide grooves 2-435, a positioning sleeve 2-451 is arranged on the slide seat of the nose bridge cutting wheel group 2-45, a mold compression spring 2-441 and a movable sleeve 2-442 are arranged on the slide seat of the nose bridge feeding wheel group 2-44, the positioning sleeve 2-451 is supported by the adjusting screw to adjust the cutting gap of the nose bridge cutting wheel group 2-45, the compression amount of the mold compression spring 2-441 is adjusted by supporting the movable sleeve 2-442 with the adjusting screw, and the gap between the nose bridge feeding wheel and the bearing mounted on the cutting frame 2-431 is adjusted, thereby adjusting the size of its dynamic friction. The cloth pressing plate 2-422 is located in the middle of the nose bridge feeding wheel group 2-44 and the nose bridge cutting wheel group 2-45.

[0065] The nose bridge feeding wheel assembly 2-44 includes a slide 2-443, a bearing 2-444, a feeding shaft 2-445, a nose bridge feeding wheel 2-446, a spacer 2-447 and a feeding gear 2-448. The feeding shaft 2-445 is fixed in the inner holes on both sides of the slide 2-443 by means of matching bearings. The inner end of the feeding shaft 2-445 close to the slider seat 2-433 is equipped with the nose bridge feeding wheel 2-446. The outer end of the feeding shaft 2-445 close to the slider seat 2-433 is fixed by means of matching bearings. The feed gear 2-448 is installed at intervals by the spacer 2-447; the nose bridge cutting wheel group 2-45 includes a slide 2-452, a bearing 2-453, a cutting shaft 2-454, a nose bridge cutting wheel 2-455, a nose bridge strip cutting knife 2-456, a spacer 2-457, a cutting gear 2-458 and a sprocket 2-459, and the cutting shaft 2-454 is fixed in the inner holes on both sides of the slide 2-443 by matching the bearing 2-453, and the cutting shaft 2-454 is close to the slider seat 2 -433 is provided with a nose bridge cutting wheel 2-455 at the inner end, a nose bridge strip cutting knife 2-456 is fixed in the groove of the nose bridge cutting wheel 2-455 by means of a set screw, a cutting shaft 2-454 is close to the outer end of the slider seat 2-452 and a cutting gear 2-458 is installed at intervals through a spacer 2-457, the cutting gear 2-458 is aligned with the side of the transition gear 2-463 and the feeding gear 2-448, and a chain is provided at the tail of the cutting shaft 2-454 close to the outer end of the slider seat 2-452. Wheel 2-459; the nose bridge strip conveying device 2-4 also includes a transition gear set 2-46, and the transition gear set 2-46 includes an adjustment seat 2-461, a bearing 2-462 and a transition gear 2-463. The transition gear 2-463 is fixed on the shaft of the adjustment seat 2-461 through the bearing 2-462. The transition gear set 2-46 is installed in the transition middle position of the nose bridge feeding wheel set 2-44 and the nose bridge cutting wheel set 2-45, and is fixed on the outer side of the slider seat 2-433.

[0066] The mask forming welding device 2-5 includes two side panels 2-51, and the two side panels 2-51 are parallel and fixed at intervals on the upper surface of the workbench 2-12 on the frame 2-1. The mask forming welding device 2-5 includes an edge-sealing flower roller group 2-52, a flower roller group 2-53, a cutting roller group 2-54, a discharge roller group 2-55 for facilitating the discharge of mask fabric, and a first edge-sealing ultrasonic welding mechanism 2-56 and a second edge-sealing ultrasonic welding mechanism 2-57 installed on the workbench 2-12 on the frame 2-1. The first edge-sealing ultrasonic welding mechanism 2-56 is located below the edge-sealing flower roller group 2-52, and the second edge-sealing ultrasonic welding mechanism 2-57 is located below the edge-sealing flower roller group 2-52. The structure 2-57 is located below the flower roller group 2-53, and the edge-sealing flower roller group 2-52 includes a flower roller core shaft 2-521 hinged with two side plates 2-51 and two first edge-sealing flower rollers 2-522 arranged at intervals outside the flower roller core shaft 2-521, and each of the first edge-sealing flower rollers 2-522 is provided with a first edge-sealing convex tooth 2-523 annularly distributed on the outer side of the first edge-sealing flower roller 2-522, and the first edge-sealing ultrasonic welding mechanism 2-56 includes a first ultrasonic generator 2-561 connected in sequence from bottom to top, a first transducer 2-562 connected to the first ultrasonic generator 2-561, and a first transducer 2-562 connected to the top of the first transducer 2-562 and passing through the first transducer 2-562. The first transducer 2-562 converts electrical energy into a first welding head 2-563 of high-frequency vibration mechanical energy (only the first edge-sealing ultrasonic welding mechanism is taken as an example in the figure), the first welding head 2-563 is arranged corresponding to the first edge-sealing convex tooth 2-523, the first transducer 2-562 is fixed to the lower bottom surface of the working table 2-12 of the mask body film making machine through the vibrator mounting plate and the adjusting screw, and the first ultrasonic generator 2-561 is installed at the bottom of the inner side of the frame 2-1 of the mask body film making machine through the bracket; the flower roller group 2-53 includes a flower roller core shaft 2-531 hinged with two side plates, and a second edge-sealing flower roller 2-532 sleeved outside the flower roller core shaft 2-531, The second edge-sealing flower roller 2-532 is provided with a second edge-sealing convex tooth 2-533 extending along its length direction, and the second edge-sealing ultrasonic welding mechanism includes a second ultrasonic generator connected in sequence from bottom to top, a second transducer connected to the second ultrasonic generator, and a second welding head connected to the top of the second transducer and converting electrical energy into high-frequency vibration mechanical energy through the second transducer. The second welding head is arranged corresponding to the second edge-sealing convex tooth 2-533, the second transducer is fixed to the lower bottom surface of the working table 2-12 of the mask body film making machine through a vibrator mounting plate and an adjusting screw, and the second ultrasonic generator is installed at the inner bottom of the frame 2-1 of the mask body film making machine through a bracket.The cutting roller group 2-54 includes a cutting roller 2-541 and a knife pad roller 2-542 which are distributed up and down and hinged to two side plates 2-51 at both ends. The mask fabric can pass through the gap between the cutting roller 2-541 and the knife pad roller 2-542, and the cutting roller 2-541 is provided with a cutting knife 2-543 for cutting the mask fabric. The cutting knife 2-543 extends along the length direction of the cutting roller 2-541. The cutting roller group 2-54 adjusts the gap size between the cutting roller 2-541 and the knife pad roller 2-542 by a screw and a positioning sleeve 2-544.

[0067] The mask forming and welding device 2-5 also includes a first pulling roller group 2-58 and a second pulling roller group 2-59. The first pulling roller group 2-58 is located between the edge banding flower roller group 2-52 and the flower roller group 2-53, and the second pulling roller group 2-59 is located between the flower roller group 2-53 and the cutting roller group 2-54. The first pulling roller group 2-58 and the second pulling roller group 2-59 both include a first pulling roller and a second pulling roller distributed up and down, and the gap between the first pulling roller and the second pulling roller is adjusted by an adjusting screw; the discharge roller group 2-55 is located at the outlet end of the cutting roller group 2-54, and the discharge roller group 2-55 includes an adjusting screw, a first discharging roller and a second discharging roller distributed up and down, and the lower end of the adjusting screw is provided with a spring compression sleeve, a mold compression spring and a spring positioning sleeve, and the gap between the first discharging roller and the second discharging roller is adjusted by compressing the mold compression spring by the adjusting screw.

[0068] The transition conveying device 2-6 is arranged at the exit position of the forming welding device. The transition conveying device 2-6 is fixed to the two inner sides of the two side plates of the forming welding device through a gasket and bolts, close to the side of the discharge roller group 2-55. The first feeding wheel of the transition conveying device 2-6 is connected to the second discharge roller of the forming welding device through a circular belt. The transition conveying device 2-6 includes a main frame 2-61, and the main frame 2-61 is composed of a left side plate, a right side plate, a gasket, a feeding wheel shaft and a discharge plate 2-62. The reduction motor 2-63 is fixed to the outer side of the left side plate through a motor connecting plate, and the left side plate is provided with a speed regulator mounting plate to install the speed regulator 2-68. The output shaft of the reduction motor 2-63 is installed with a main synchronous wheel 2-64, and the main synchronous wheel 2-64 transmits torque and speed to a small synchronous wheel 2-65 through a synchronous belt 2-66; the small synchronous wheel 2-65 is installed coaxially with the second feeding wheel and the first pulley, and the second feeding wheel is connected to the driven pulley through a flat belt 2-67, and the driven pulley is installed at the lower right of the second feeding wheel, leaving a small movement gap with the discharge plate 2-62; a first pulley and a second pulley are installed at the upper right of the first pulley, and the first pulley and the second pulley coaxial with the second feeding wheel are installed on the same side of the right side plate. On a straight line, the first pulley is connected to the second pulley through a Φ3 round belt, and another first pulley is installed at the lower left of the second pulley and the tight outer side of the Φ3 round belt, so that the rotation direction of this first pulley is opposite to the first pulley coaxial with the second feeding wheel; the reverse rotating first pulley is coaxially installed with the third feeding wheel, and the fourth feeding wheel is installed at the lower right of the third feeding wheel and above the discharge plate 2-62, leaving a gap between the discharge mask and the discharge plate 2-62, and close to the output end; the discharge plate 2-62 is installed at the lower right of the driven pulley, below the fourth feeding wheel, and on the right side of the output end. The first feeding wheel is connected to the second discharge roller of the mask body machine forming section with a Φ6 round belt, and a tensioning wheel is set on the inner side of the loose edge of the Φ6 round belt connected to the second discharge roller end.

[0069] The ear band welding machine includes a base frame 3-1 and a tray conveying device 3-2, an ear band welding device 3-3, an ear band wire passing device 3-4, an ear band material guiding device 3-5, a scissor mechanism 3-6, an ear band pulling device 3-7, a finished product discharging and unloading device 3-8 and a finished product receiving and conveying device 3-9 installed on the upper surface of the base frame 3-1. The tray conveying device 3-2 is used to convey mask fabrics, the ear band welding device 3-3 is located above the tray conveying device 3-2, and the ear band wire passing device 3-4, the ear band material guiding device 3-5, the scissor mechanism 3-6, the ear band pulling device 3-7 are installed on both sides of the tray conveying device 3-2; the ear band welding device 3-3 includes a tooth pressing welding head mechanism 3-31, an ear band descending mechanism 3-32, an ear band rotating mechanism 3-33, a first ear band ultrasonic welding mechanism 3-34 and a second ear band ultrasonic welding mechanism 3-35 which are arranged in sequence from top to bottom, the tooth pressing welding head mechanism 3-31 includes a cylinder 3-341 and a first tooth pressing welding head 3-342 and a second tooth pressing welding head 3-343 connected to the cylinder, the first ear band ultrasonic welding mechanism 3-34 is located below the first tooth pressing welding head 3-342 The second earband ultrasonic welding mechanism 3-35 is located below the second tooth-pressing welding head 3-343. The earband rotating mechanism 3-33 is provided with two, and the two earband rotating mechanisms 3-33 are respectively located on the outside of the first tooth-pressing welding head 3-342 and the outside of the second tooth-pressing welding head 3-343. The lower end of the earband rotating mechanism 3-33 is connected with an earband grabbing mechanism 3-331 for grabbing the earband; the wire-passing side plate of the earband wire-passing device 3-4 is fixed on the long side of the large top plate 3-361 of the tooth-pressing welding head mechanism 3-31. The earband wire-passing device 3-4 is fixed on the long side of the large top plate 3-361 of the tooth-pressing welding head mechanism 3-31. 4 includes a wire pulling wheel group 3-41 and a shaking wire coil 3-42; the ear strap guide device 3-5 includes a guide bracket 3-51, a guide wheel 3-52 and a wire passing spring bar 3-53, and the guide wheel 3-52 and the wire passing spring bar 3-53 are fixed to the guide bracket 3-51 by bolts; the ear strap pulling device 3-7 includes an ear strap fixing block 3-71, an ear strap pressing block 3-72 and a cylinder clamp 3-73; the scissor mechanism 3-6 is installed above and behind the ear strap fixing block 3-71 of the ear strap pulling device 3-7, and the scissor mechanism 3-6 includes a scissors 3-61 for cutting the ear strap.

[0070] The first ear band ultrasonic welding mechanism 3-34 includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer 3-344 connected to the first ultrasonic generator, and a first welding head 3-345 connected to the top of the first transducer 3-344 and converting electrical energy into high-frequency vibration mechanical energy through the first transducer 3-344, and the first tooth-pressing welding head 3-342 and the first welding head 3-345 are arranged correspondingly up and down; the second ear band ultrasonic welding mechanism 3-35 includes a second ultrasonic generator connected in sequence from bottom to top, a second transducer 3-351 connected to the second ultrasonic generator, and a second welding head 3-352 connected to the top of the second transducer 3-351 and converting electrical energy into high-frequency vibration mechanical energy through the second transducer 3-351, and the second tooth-pressing welding head 3-343 and the second welding head 3-352 are arranged correspondingly up and down.

[0071] The tray conveying device 3-2 is provided with a servo motor 3-21, a reducer 3-22, a synchronous belt transmission mechanism 3-23, four double-row sprocket assemblies fixed on the base frame 3-1 and arranged in a trapezoidal space, a conveying chain with a bent plate 3-24, and a plurality of trays 3-25 arranged side by side and fixed on the conveying chain with a bent plate by screws.

[0072] The ear band welding device 3-3 is fixed on the workbench 3-11 of the base frame 3-1 through a pillar 3-36, a large top plate 3-361 is provided on the top of the pillar 3-36, an upper fixed plate 3-362 is provided above the large top plate 3-361, the upper fixed plate 3-362 is fixedly connected to the large top plate 3-361 through four connecting rods 3-363, the pressing tooth welding head mechanism 3-31 is provided with a cylinder 3-341 fixed on the upper fixed plate 3-362 to drive, the cylinder drives the sliding rod 3-369 of the four linear bearing groups to move through the connecting screw 3-365, the connecting sleeve 3-366, the connecting block 3-367 and the movable connecting plate 3-368, the four sliding rods 3-369 are respectively connected to the first welding head fixing block 3-346 and the second welding head fixing block 3-347, the first welding head fixing block 3-346 and the second welding head fixing block 3 -347 are respectively connected to the first pressing tooth welding head 3-342 and the second pressing tooth welding head 3-343; two buffer columns 3-348 are installed on the lower bottom surface of the upper fixed plate 3-362; the ear band lowering mechanism 3-32 is driven by a cylinder fixed to the middle of the large top plate 3-361, and two groups of linear bearing groups spaced and symmetrically arranged are fixed on the upper side surface of the large top plate 3-361, and the ear band lowering mechanism 3-32 also includes a fixed block 3-321, a cushioning block 3-322 and a long movable plate 3-323, and the cylinder connects the fixed block 3-321 and the cushioning block 3-322 through a connecting rod and a cylinder connector, and the long movable plate 3-323 is fixedly connected to the cushioning block 3-322 and the sliding rod of the two groups of linear bearing groups by bolts; the ear band rotating mechanism 3-33 is fixed on the long movable plate 3-323 of the ear band lowering mechanism 3-32. The ear band rotating mechanism 3-33 includes a rotating cylinder 3-332 and a rotating base 3-333. The ear band grabbing mechanism 3-331 is connected to the bottom of the rotating base 3-333. The ear band grabbing mechanism 3-331 includes an ear band clip 3-3311 and a grabbing cylinder capable of driving the ear band clip 3-3311 to move. The ear band clip 3-3311 is two pairs of clips that cooperate with each other.

[0073] The pull-ear belt device 3-7 includes a connecting base plate 3-74, a motor seat 3-741, a servo motor 3-742, a synchronous belt 3-743, a main synchronous wheel 3-744, a driven synchronous wheel 3-745, a linear guide 3-746, a bearing support 3-747, a cylinder bracket 3-748, an adjustment base plate 3-749, a code block 3-76 and a cylinder pull-ear belt mechanism, and the cylinder pull-ear belt mechanism includes a synchronous belt pressure plate, a connecting block 3-75 2. Pneumatic finger 3-753 and the cylinder clamp 3-73. The lower bottom surface of the synchronous belt pressure plate is fixed on the slider of the linear guide 3-746. The upper side of the synchronous belt pressure plate clamps the synchronous belt 3-743 through the connecting block 3-752. One end of the connecting block 3-752 is connected to the pneumatic finger 3-753. Two symmetrical cylinder clamps 3-73 are installed on the clamping jaws of the pneumatic finger 3-753, and a main synchronous wheel is installed. The servo motor 3-742 of 3-744 is fixed to the tail end of the connecting base plate 3-74 through the motor seat 3-741, and the driven synchronous wheel 3-745 at the other end is connected through the clamped synchronous belt 3-743 and the cylinder ear belt pulling mechanism. The driven synchronous wheel 3-745 is fixed to the bearing supports 3-747 at both ends through the rotating shaft and the bearings at both ends. The two bearing supports 3-747 are fixed to the connecting base plate 3-74 by screws. The ear belt fixing block 3-71 is fixed to the output end of the cylinder. The ear belt pressure block 3-72 is pushed by the cylinder piston rod to move in the groove of the ear belt fixing block 3-71. The cylinder is fixed to the end of the connecting base plate 3-74 through the cylinder bracket 3-748 and the adjusting base plate 3-749. The cylinder ear belt pulling mechanism is equipped with an induction sheet, and an induction switch is installed on the front and back of the inner side of the connecting base plate 3-74.

[0074] The earband wire-passing device 3-4 is provided with a wire-passing side plate 3-43, a wire-passing top plate 3-44, a wire-shaking group 3-45, a wire-passing group 3-46, a wire-pulling wheel group 3-41, a wire-pressing wheel group 3-47, an anticipating wheel group 3-48 and a wire-conducting wheel group 3-49 in sequence. The wire-pulling wheel group 3-41 is driven by a reduction motor. The wire-shaking group 3-45 and the wire-passing group 3-46 are fixed on the wire-passing top plate 3-44, and the wire-pulling wheel group 3-41, the wire-pressing wheel group 3-47, the anticipating wheel group 3-48 and the wire-conducting wheel group 3-49 are fixed on the wire-passing side plate 3-43. The wire-shaking group 3-45 is provided with a dual-axis cylinder and a shaking coil 3-42, and the shaking coil 3-42 is fixed to the output fixture of the dual-axis cylinder by screws.

[0075] The scissor mechanism 3-6 is fixed on the ear strap welding device 3-3 by two connecting and fixing blocks 3-62 set at a distance. The scissor mechanism 3-6 includes a connecting and fixing block 3-62, a support rod 3-63, a cylinder seat 3-64, a cylinder 3-65, a scissor seat 3-66, a connecting block 3-67, a scissor center axis 3-68, a sliding shaft 3-681, a bearing 3-682, a spring sleeve 3-683, a scissors 3-61, a cushion sleeve 3-69 and a bearing 3-691. An inner hole is provided on the inner side of the connecting and fixing block 3-62 installed on the pillar 3-36 of the ear band welding device 3-3, and the support rod 3-63 is fixed to the inner hole. The inner holes of the two cylinder seats 3-64 pass through the support rod 3-63 and are locked on the support rod 3-63 with screw clamps. The two ends of the cylinder 3-65 are fixedly connected to the cylinder seat 3-64 and the scissor seat 3-66 respectively. The cylinder seat 3-64 is fixedly connected to the support rod 3-63, and the end of the cylinder piston rod is fixedly connected to the One end of the connecting block 3-67 is fixedly connected, and the connecting block 3-67 installed at the end of the cylinder piston rod forms a hinge connection with the scissors 3-61 through the scissors center axis 3-68 and a sliding shaft 3-681. The scissors center axis 3-68 is a hollow shaft structure, and the sliding shaft 3-681 passes through the scissors 3-61 and the scissors center axis 3-68. The scissors 3-61 are fastened by the step of the sliding shaft 3-681 and the end face of the scissors center axis 3-68. A bearing 3-682 is installed at the other end of 3-681 to guide the sliding shaft 3-681 to slide in the waist-shaped groove of the scissors seat 3-66. The sliding shaft 3-681 is equipped with a spring sleeve 3-683, a spring, a gasket and a locking nut to tighten the bearing. Four sleeves 3-69 are fixed in the waist-shaped groove of the scissors seat 3-66 with screws. Two bearings 3-691 are installed at the other end of the sleeve 3-69. The bearings provide guide limits for the scissors movement and control the opening and closing size of the scissors blades.

[0076] The finished product discharging and unloading device 3-8 is provided with a cushion sleeve 3-81, a motor end side plate 3-82, a gear transmission end side plate 3-83, a reduction motor 3-84 and a belt clamping transmission group. The finished product discharging and unloading device 3-8 is fixed on the workbench 3-11 through the cushion sleeve 3-81, and the reduction motor 3-84 is installed on the upper tail end of the outer side of the motor end side plate 3-82. The output shaft of the reduction motor 3-84 is directly connected to the transmission shaft 3-841. The transmission shaft 3-841 and the driven shaft 3-842 are respectively installed on the motor end side plate 3-82 and the gear transmission end side plate 3-83 through bearings at both ends. The upper inner hole and the lower inner hole of the transmission shaft 3-841 and the driven shaft 3-842 are respectively installed with two driving pulleys 3-851 and two lower driving pulleys at a distance. The driving pulley 3-851 is connected to the driven pulley 3-853 through a flat belt 3-852. The driven pulley 3-853 is fixed to four driven pulley support rods 3-854 through bearings and screws. The four driven pulley support rods 3-854 are respectively fixed to the upper and lower inner sides of the motor end side plate 3-82 and the upper and lower inner sides of the gear transmission end side plate 3-83 through screws. The two driven pulley support rods at the bottom are The support rod is installed at the lower right of the two upper driven pulley support rods, and the two lower driven pulley support rods are installed horizontally at a distance from the lower driven shaft. The other end of the transmission shaft 3-841 is equipped with a transmission gear 3-843, and the transmission gear 3-843 is meshed with a driven gear 3-844. The driven gear 3-844 is fixed to the driven shaft 3-842 of the gear transmission end side plate 3-83 by a set screw, and is respectively connected to the four driven pulleys installed on the inner side of the motor end side plate 3-82 and the inner side of the gear transmission end side plate 3-83 through four flat belts to form a belt clamping transmission group; The tail end sides of the motor end side plate 3-82 and the gear transmission end side plate 3-83 are fixedly connected by a cylinder connecting plate 3-86, and a cylinder is installed in the middle upper inner hole of the cylinder connecting plate 3-86, and two guide pieces 3-861 and two cylinder top plate guide pillars 3-862 are symmetrically installed in the lower inner hole of the cylinder connecting plate 3-86, and the two cylinder top plate guide pillars 3-862 pass through the inner holes of the two guide pieces 3-861, and the two cylinder top plate guide pillars 3-862 are connected through the two inner holes of the push block 3-863, and are fixed at the piston rod output end of the cylinder to form an isosceles triangle space arrangement.

[0077] The finished product receiving and conveying device 3-9 includes a transmission profile frame 3-91, a first conveying wheel group 3-92, a second conveying wheel group 3-93, a wide flat belt 3-94, a reduction motor, a mounting plate, a speed regulator 3-95, a first V-type pulley 3-96, a second V-type pulley 3-97, a V-belt 3-98 and a material baffle 3-99. The first conveying wheel group 3-92 and the second conveying wheel group 3-93 are respectively fixed to the head and tail ends of the transmission profile frame 3-91 through their respective mounting plates and bearings. The reduction motor is fixed to the profile column at the head end of the transmission profile frame 3-91 through the mounting plate. The inner hole of the first V-type pulley 3-96 is fixed to the output shaft of the reduction motor through a fastening screw. The second V-type pulley 3-97 is connected to the conveying shaft of the first conveying wheel group 3-92 of the transmission profile frame 3-91 and is connected to the first V-belt 3-98 through the V-belt 3-98. The profile pulley 3-96, the speed regulator 3-95 is installed on the profile column at the head end of the transmission profile frame 3-91 through the mounting plate, the first conveying wheel group 3-92 is connected to the second conveying wheel group 3-93 through the wide flat belt 3-94, the baffle plate 3-99 is installed on the inner side horizontal aluminum profile of the head end of the transmission profile frame 3-91, the head end of the finished product receiving and conveying device 3-9 is installed at the discharge position just below the finished product discharging and unloading device 3-8, the baffle plate 3-99 is directly opposite to the lower right side of the driven shaft of the finished product discharging and unloading device 3-8, and the baffle plate 3-99 is spaced apart from the driven shaft, the molded masks after unloading by the finished product discharging and unloading device 3-8 are thrown to the head of the finished product receiving and conveying device 3-9, and the baffle plate 3-99 blocks the thrown masks and accurately falls on the wide flat belt 3-94 of the finished product receiving and conveying device 3-9.

[0078] It also includes a limit device 3-12 and a pressure mask device 3-13, the limit device 3-12 is fixed on the workbench 3-11 by bolts, the limit device 3-12 is provided with a limit plate 3-121, a first outer limit side plate 3-122, an inner limit plate 3-123, a protective cover 3-124 and a second outer limit side plate 3-125; the pressure mask device 3-13 includes a connecting column 3-131, a transverse connecting plate 3-132 and a clamping plate 3-133, the limit device 3-12 is fixedly mounted on the two outer sides of the pressure mask device 3-13, one end of the clamping plate 3-133 is fixed to the middle position of the transverse connecting plate 3-132 by screws, and the other end of the clamping plate 3-133 falls freely on the tray 3-25 of the tray conveying device 3-2.

[0079] The above structure works as follows:

[0080] S1. The three mask fabric rolls placed on the fabric rod group 1-2 are unwound. The fabrics are layered and bypass the guide rod 1-6 to enter the guide rod group 1-7. The nose bridge strips are placed on the nose bridge strip reel 1-3 to unwind the nose bridge strips. The left and right offsets of the fabric rolls and the nose bridge strip rolls are adjusted by adjusting the headless screws on the conical locking barrel, so that the fabric can smoothly enter the guide rod group 1-7, and the coil brake device 1-5 is adjusted so that the fabric and the nose bridge strip do not rotate too fast to ensure that the fabric and the nose bridge strip are always in a tensioned state. Through the left and right adjustment of the guide rod group 1-7, the fabric is transferred from the unwinding rack 1 to the fabric guide wheel 2-23 of the pre-folding device 2-2 of the mask body sheet making machine 2. By adjusting the guide rod group 1-7, the fabric can enter the edge-sealing flower roller pressing part without deviation to ensure the edge size of the mask.

[0081] S2, the cloth passes through the guide rod group 1-7 of the unwinding rack 1, bypasses the cloth guide wheel 2-23 on the pre-folding device 2-2 and the two upper and lower pre-folding forming rollers 2-21 installed positively and negatively, realizes the pre-folding of the middle layer of the cloth, and passes through the two sets of inserting mechanisms of the cloth folding device 2-3 to obtain the required folding size of the mask.

[0082] S3. After the cloth (the mask cloth mentioned above) passes over the top of the top cloth roller 2-73 to form tension, it enters the nose bridge strip conveying device 2-4 to realize folding and hemming. The nose bridge strip cutter 2-456 of the nose bridge cutting wheel group 2-45 cuts the nose bridge strip to a fixed length and then introduces it into the hemming cloth; the nose bridge strip is unwound and pulled by the rotation of the nose bridge feeding wheel 2-446 of the nose bridge feeding wheel group 2-44 of the nose bridge strip conveying device 2-4; the movement of the nose bridge feeding wheel group 2-44 on the nose bridge strip conveying device 2-4 is driven by the gear and transition gear group 2-46 on the nose bridge cutting wheel group 2-45, and the movement of the nose bridge cutting wheel group 2-45 is driven by the sprocket on the edge banding flower roller group 2-52 and the sprocket chain on the nose bridge cutting wheel group 2-45.

[0083] S4, the cloth is unwound and pulled by the rotation of the first pulling roller group 2-58 and the second pulling roller group 2-59, and the cloth enters the edge banding roller group 2-52 and the flower roller group 2-53 of the mask forming welding device 2-5, and is turned on by the ultrasonic generator directly below each of them. The edge banding flower roller group 2-52 and the flower roller group 2-53 rotate and pull the cloth forward to achieve cloth welding, complete the upper and lower pattern pressing and forming of the cloth and the left and right pattern pressing and forming of the cloth, and the cloth passes through the second pulling roller group 2-59 and enters the cutter roller group 2-54, and is cut into mask sheets by the blade of the cutter roller group 2-54. Mechanical automatic cutting is adopted, so that the cutting efficiency is higher, the precision is more accurate and the labor cost is saved. The mask sheet is discharged by the friction transmission of the first discharge roller and the second discharge roller of the discharge roller group 2-55, and is transported to the transition conveying device 2-6 by the second discharge roller through a round belt.

[0084] S5. The power transmission system of the mask making machine is driven by a variable frequency reduction motor to output torque and speed, and respectively drives the first drawing roller group 2-58 and the second drawing roller group 2-59 to move through a chain transmission mechanism; the first drawing roller group 2-58 drives the edge banding flower roller group 2-52 to move through a gear transmission mechanism and a transition gear group 2-46; the movement of the flower roller group 2-53 and the cutting roller group 2-54 is driven by the gear transmission mechanism and the transition gear group 2-46 of the second drawing roller group 2-59; the movement of the discharging roller group 2-55 is driven by the sprocket chain transmission mechanism of the second drawing roller group 2-59.

[0085] S6, the second discharging roller conveys the mask sheet to the flat belt 2-67 of the transition conveying device 2-6 through the round belt. The mask sheet forms a belt-type clamping and conveying mask sheet under the power transmission of the flat belt conveyor belt and the round belt, the synchronous pulley transmission group, and the reverse pulley. The mask sheet is thrown onto the tray 3-25 of the tray conveying device 3-2 of the ear band welding machine 3 by inertia under high-speed motion at the discharging plate 2-62, and the next process starts.

[0086] S7, the tray conveying device 3-2 is driven by a servo motor to make a stepping motion of the tray 3-25 on the conveying chain 3-24 with a curved plate, and the mask cloth is conveyed by the tray conveying device 3-2 through the tray 3-25 on the conveying chain 3-24 with a curved plate to the first welding head 3-345 and the second welding head 3-352, completing the feeding of the mask cloth. The position where the tray stays can be controlled by adjusting the position of the origin sensing disk.

[0087] S8, the ear band wire is unwound from the circular ear band reel, and the cylinder of the wire shaking group 3-45 shakes the wire coil 3-42 to obtain a continuous non-sticky ear band wire, which bypasses the ear band wire passing device 3-4. Under the drive of the reduction motor, the wire pulling wheel group 3-41 and the wire pressing wheel group 3-47 form a dynamic friction wheel transmission, and the traction and unwinding power is obtained under the action of the dynamic friction force of the wire pulling wheel group 3-41 and the wire pressing wheel group 3-47; the ear band wire bypasses the groove of the upward and downward floating prediction wheel of the prediction wheel group 3-48, enters the wire groove of the wire wheel group 3-49, and then goes down into the ear band guide device 3-5, goes around the guide groove of the guide wheel 3-52 for half a circle, and then goes upward into the wire passing spring bar 3-53, and the wire passing spring bar 3-53 provides high-speed flexible buffering and wire passing support for the ear band wire.

[0088] S9, after the ear strap line passes through the wire spring strip 3-53, it enters the ear strap pulling device 3-7, and the ear strap line passes through the ear strap fixing block 3-71 for a distance. The servo motor drives the synchronous belt 3-743 mounted on the linear guide rail 3-746 to move to the position of clamping the ear strap, and the pneumatic finger 3-753 of the cylinder ear strap pulling mechanism closes the cylinder clamp 3-73, clamps the ear strap line and moves it to the position of the set ear strap line length and stops moving. The ear strap line is driven by the cylinder to move the ear strap pressing block 3-72 to the extreme position of the ear strap fixing block 3-71 and clamped.

[0089] S10, the ear strap rotating mechanism 3-33 is driven by the ear strap descending mechanism 3-32 to descend to the position of clamping the ear strap line, the two ear strap grabbing mechanisms 3-331 of the ear strap rotating mechanism 3-33 are driven by the cylinder to close the ear strap clamps 3-3311 to clamp the two ends of the ear strap line, the cylinder 3-65 of the scissor mechanism 3-6 drives the piston rod and the connecting block 3-67 to push out, drive the scissor center axis 3-68 and the sliding axis 3-681 to extend and retract, and complete the loosening and closing action of the scissors 3-61 through the bearing cam mechanism, the scissors 3-61 closes and cuts the ear strap line, after the ear strap grabbing mechanism 3-331 clamps a certain length of ear strap, the ear strap descending mechanism 3-32 drives the ear strap rotating mechanism 3-33 to rise, the ear strap rotating mechanism 3-33 rotates the ear strap to above the welding position, and then the ear strap descending mechanism 3-32 drives the ear strap rotating mechanism 3-33 to descend to the mask fabric ear strap welding position, the first pressing tooth welding head 3-31 of the pressing tooth welding head mechanism 3-31 -342 and the second tooth-pressing welding head 3-343 are driven by the cylinder 3-341 to descend to the non-woven fabric and ear strap line of the mask fabric, the first ultrasonic generator and the second ultrasonic generator are turned on, the mask fabric is located between the first welding head 3-345, the second welding head 3-352 and the first tooth-pressing welding head 3-342, the second tooth-pressing welding head 3-343, and the first welding head 3-345 is in contact with the first tooth-pressing welding head 3-342, and the second welding head 3-35 is in contact with the first tooth-pressing welding head 3-343. 2 contacts with the second pressing tooth welding head 3-343, and after the pressure is continued, the two ends of the ear strap line are welded with the mask fabric, and the two ear strap grasping mechanisms 3-331 of the ear strap rotating mechanism 3-33 are driven by the cylinder to loosen the two ends of the ear strap line. The ear strap descending mechanism 3-32 drives the ear strap rotating mechanism 3-33 to rise and the rotating cylinder 3-332 drives the ear strap grasping mechanism 3-331 to reset, preparing for the next round of clamping the ear strap line.

[0090] S11. After the ear straps of the flat mask are welded and formed, they are transported by the tray 3-25 on the tray conveying device 3-2 to the finished product discharging and unloading device 3-8, and transported by the belt clamping transmission assembly to the mask unloading place for counting and stacking. After the mask count is full, the cylinder pushes out the push block 3-863 under the guidance of the cylinder top plate guide column 3-862 to push out the mask, completing the unloading, and the cylinder resets. The molded mask after unloading is thrown onto the finished product receiving and conveying device 3-9.

[0091] S12, the finished product receiving and conveying device 3-9 outputs torque and speed through the speed regulating motor, so that the V-belt 3-98 transmission mechanism drives the first conveying wheel group 3-92, the second conveying wheel group 3-93 and the wide flat belt 3-94 to transmit and convey the masks to the other end of the finished product receiving and conveying device 3-9, and collects the masks for packaging.

[0092] In the above structure:

[0093] 1. A material discharging rack 1 is provided to place mask fabrics, a mask body sheet-making machine 2 can realize the manufacture of the mask body, and an ear strap welding machine 3 can weld the mask body and the ear straps together to form a complete mask. The overall production is automated, with a high degree of automation, no manual operation is required, time and labor costs are saved, and production efficiency is improved. At the same time, the production process of masks is also reduced, and the production process of masks is optimized. In addition, each structure adopts a modular design with high openness. By replacing the corresponding operating mechanism, it is possible to switch between the mask production equipment and the traditional coil inspection equipment or produce masks of different specifications. It is not only highly flexible and convenient for responding to sudden outbreaks of infectious diseases, but also has high economic benefits and low costs. It can also achieve fully automated production, significantly improving the production efficiency and capacity of masks.

[0094] 2. The operating mechanisms are distributed in an orderly manner and arranged compactly, which greatly reduces the footprint of the mask machine and is conducive to large-scale promotion and application.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A flat mask machine, characterized in that: It includes a material unloading rack, a mask body sheet making machine and an ear strap welding machine, one end of the mask body sheet making machine is connected to the material unloading rack, and the other end of the mask body sheet making machine is connected to the ear strap welding machine; The unloading rack includes a main frame and a cloth rod group for hanging the coil, a nose bridge reel, a cloth adjustment device, a coil brake device, a material guide rod and a guide rod group for guiding the raw material feeding. The guide rod group is provided with a plurality of guide rods and is stacked on one side of the main frame and close to the mask body sheet making machine; The mask sheet making machine includes a frame, a pre-folding device installed on the frame and arranged in sequence, a cloth folding device, a nose bridge strip conveying device, a mask forming and welding device and a transition conveying device; the pre-folding device includes two pre-folding forming rollers correspondingly arranged up and down for performing preliminary folding on the mask, each pre-folding forming roller is provided with a plurality of parallel convex teeth, the convex teeth of the two pre-folding forming rollers are in meshing shape, and the rotation directions of the two pre-folding forming rollers are opposite; the cloth folding device includes at least three cloth folding plates stacked up and down, namely a first cloth folding plate, a second cloth folding plate and a third cloth folding plate, the first cloth folding plate, the second cloth folding plate and the third cloth folding plate are all divided into two, and the dividing lines of the three cloth folding plates are staggered; the nose bridge strip conveying device includes an The invention relates to a bottom plate, and a folding assembly installed on the bottom plate for folding the two sides of the mask, and a cutting frame group for cutting the bridge of the nose; the mask forming and welding device comprises two side plates, and the two side plates are parallel and fixed on the upper surface of the workbench on the frame at intervals; the mask forming and welding device comprises an edge banding flower roller group, a flower roller group, a cutting knife roller group, a discharge roller group for discharging the mask fabric, and a first edge banding ultrasonic welding mechanism and a second edge banding ultrasonic welding mechanism installed on the frame, the first edge banding ultrasonic welding mechanism is located below the edge banding flower roller group, and the second edge banding ultrasonic welding mechanism is located below the flower roller group; the edge banding flower roller group comprises a flower roller core shaft hinged with the two side plates and a flower roller core shaft sleeved on the frame. Two first edge-sealing flower rollers are arranged at intervals outside the flower roller core shaft, each of which is provided with a first edge-sealing convex tooth annularly distributed on the outside of the first edge-sealing flower roller, and the first edge-sealing ultrasonic welding mechanism includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer connected to the first ultrasonic generator, and a first welding head connected to the top of the first transducer and converting electrical energy into high-frequency vibration mechanical energy through the first transducer, and the first welding head is arranged corresponding to the first edge-sealing convex tooth; the flower roller group includes a flower roller core shaft hinged to two side plates, and a second edge-sealing flower roller sleeved outside the flower roller core shaft, the second edge-sealing flower roller is provided with a second edge-sealing convex tooth extending along its length direction, and the second edge-sealing ultrasonic welding mechanism includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer connected to the first ultrasonic generator, and a first welding head connected to the top of the first transducer and converting electrical energy into high-frequency vibration mechanical energy through the first transducer, and the first welding head is arranged corresponding to the first edge-sealing convex tooth. The acoustic welding mechanism includes a second ultrasonic generator connected in sequence from bottom to top, a second transducer connected to the second ultrasonic generator, and a second welding head connected to the top of the second transducer and converting electrical energy into high-frequency vibration mechanical energy through the second transducer. The second welding head is arranged corresponding to the second edge-sealing convex teeth. The cutting roller group includes a cutting roller and a knife pad roller which are distributed up and down and hinged to two side plates at both ends. The mask fabric can pass through the gap between the cutting roller and the knife pad roller, and the cutting roller is provided with a cutting knife for cutting the mask fabric; the transition conveying device is located at the outlet of the mask forming welding device, and the transition conveying device includes a round belt for conveying the mask and a reduction motor capable of driving the round belt transmission; The ear band welding machine includes a base frame and a tray conveying device, an ear band welding device, an ear band wire passing device, an ear band material guiding device, a scissor mechanism, an ear band pulling device, a finished product discharging and unloading device and a finished product receiving and conveying device installed on the upper surface of the base frame. The tray conveying device is used to convey the mask fabric. The ear band welding device is located above the tray conveying device. The ear band wire passing device, the ear band material guiding device and the ear band pulling device are all installed on both sides of the tray conveying device; the ear band welding device includes a tooth pressing welding head mechanism, an ear band descending mechanism, an ear band rotating mechanism, a first ear band ultrasonic welding mechanism and a second ear band ultrasonic welding mechanism which are arranged in sequence from top to bottom. The tooth pressing welding head mechanism includes a cylinder and a first tooth pressing welding head and a second tooth pressing welding head connected to the cylinder. The first ear band ultrasonic welding mechanism is located at the first tooth pressing welding head. Below the welding head, the second ear band ultrasonic welding mechanism is located below the second tooth-pressing welding head, the ear band rotating mechanism is provided with two, the two ear band rotating mechanisms are respectively located on the outside of the first tooth-pressing welding head and the outside of the second tooth-pressing welding head, and the lower end of the ear band rotating mechanism is connected with an ear band grabbing mechanism for grabbing the ear band; the wire-passing side plate of the ear band passing device is fixed on the long side of the large top plate of the tooth-pressing welding head mechanism, and the ear band passing device includes a wire pulling wheel group and a shaking coil; the ear band material guiding device includes a material guiding bracket, a material guiding wheel and a wire-passing elastic strip, and the material guiding wheel and the wire-passing elastic strip are fixed to the material guiding bracket by bolts; the ear band pulling device includes an ear band fixing block, an ear band pressing block and a cylinder clamp; the scissors mechanism is installed above and behind the ear band fixing block of the ear band pulling device, and the scissors mechanism includes scissors for cutting the ear band.

2. A flat mask machine according to claim 1, characterized in that: The pre-folding device also includes a pre-folding mounting frame fixedly connected to the upper surface of the frame, the pre-folding mounting frame is provided with a plurality of cloth guide wheels arranged in sequence for guiding the cloth to move forward, the pre-folding forming roller is located on one side of the cloth guide wheel and the pre-folding forming roller is installed on the pre-folding mounting frame; a pad is provided between the first cloth folding plate, the second cloth folding plate and the third cloth folding plate, and the distance between the cloth folding plates corresponding to the other set of insert mechanisms is adjusted by a cloth folding adjustment seat installed in the cloth folding fixed seat groove; the folding assembly includes two cloth folding pieces arranged in parallel and a cloth pressing plate located between the two cloth folding pieces, the bottom of the cloth folding piece is fixedly connected to the mounting base plate, the upper end of the cloth folding piece is at a certain angle to the mounting base plate, and a gap is provided between the cloth pressing plate and the mounting base plate for facilitating the passage of mask cloth; the angle between the upper end of the cloth folding piece and the mounting base plate is less than or equal to ninety degrees.

3. A flat mask machine according to claim 1, characterized in that: The cutting knife frame group includes a cutting knife frame and a slider adjustment seat fixedly connected to the upper surface of the mounting base plate, the slider adjustment seat is arranged at the right position on the mounting base plate, the cutting knife frame is fixed to the inner position of the slider adjustment seat by a connecting plate and the cutting knife frame is located on the upper surface of the cloth pressing plate, the nose bridge strip conveying device also includes a nose bridge guide sleeve, and the nose bridge guide sleeve is fixed to the discharge end of the upper side of the cutting knife frame by a fixing rod; the slider adjustment seat includes a slider seat and an adjustment plate connected to the top of the slider seat, two slide grooves are arranged between the slider adjustment plate and the slider seat, and each slide groove is provided with a The adjusting screw for adjusting the height in the groove, the slider adjusting seat is provided with a nose bridge feeding wheel group and a nose bridge cutting wheel group, the nose bridge feeding wheel group and the nose bridge cutting wheel group are connected by gear transmission, the nose bridge cutting wheel group and the nose bridge feeding wheel group are respectively installed in two slide grooves, the slide seat of the nose bridge cutting wheel group is provided with a positioning sleeve, the slide seat of the nose bridge feeding wheel group is provided with a mold compression spring and a movable sleeve, the positioning sleeve is supported by the adjusting screw to adjust the cutting gap of the nose bridge cutting wheel group, the compression amount of the mold compression spring is adjusted by supporting the movable sleeve with the adjusting screw, and the nose bridge feeding wheel and the bearing clearance installed on the cutting frame are adjusted. The size of the nose bridge feed wheel group includes a slide seat, a bearing, a feed shaft, a nose bridge feed wheel, a spacer and a feed gear. The feed shaft is fixed in the inner holes on both sides of the slide seat by means of matching bearings. The inner end of the feed shaft close to the slider seat is equipped with a nose bridge feed wheel, and the outer end of the feed shaft close to the slider seat is installed with a feed gear through a spacer. The nose bridge cutting wheel group includes a slide seat, a bearing, a cutting shaft, a nose bridge cutting wheel, a nose bridge strip cutting knife, a spacer, a cutting gear and a sprocket. The cutting shaft is fixed in the inner holes on both sides of the slide seat by means of matching bearings. The cutting shaft is close to the slider seat. A nose bridge cutting wheel is installed at the inner end, and the nose bridge strip cutter is fixed in the groove of the nose bridge cutting wheel by a fixing screw. The cutting gear is installed at the outer end of the cutting shaft close to the slider seat through a spacer. The cutting gear is aligned with the side of the transition gear and the feeding gear, and a sprocket is installed at the tail of the outer end of the cutting shaft close to the slider seat; the nose bridge strip conveying device also includes a transition gear group, which includes an adjusting seat, a bearing and a transition gear. The transition gear is fixed on the shaft of the adjusting seat through a bearing, and the transition gear group is installed in the middle position of the transition between the nose bridge feeding wheel group and the nose bridge cutting wheel group, and is fixed on the outer side of the slider seat.

4. A flat mask machine according to claim 1, characterized in that: The mask forming and welding device also includes a first pulling roller group, a second pulling roller group and a discharging roller group, the first pulling roller group is located between the edge banding roller group and the flower roller group, the second pulling roller group is located between the flower roller group and the cutting knife roller group, the first pulling roller group and the second pulling roller group each include a first pulling roller and a second pulling roller distributed up and down, the gap between the first pulling roller and the second pulling roller is adjusted by an adjusting screw; the discharging roller group is located at the outlet end of the cutting knife roller group, the discharging roller group includes an adjusting screw, an upper The first discharging roller and the second discharging roller are distributed at the bottom, and the lower end sleeve of the adjusting screw is provided with a spring compression sleeve, a mold compression spring and a spring positioning sleeve. The gap between the first discharging roller and the second discharging roller is adjusted by adjusting the screw compression mold compression spring; the transition conveying device includes a main frame, and the main frame is composed of a left side plate, a right side plate, a cushion sleeve, a feeding wheel shaft and a discharging plate. The reduction motor is fixed to the outer side of the left side plate through a motor connecting plate. The left side plate is provided with a speed regulator mounting plate for installing the speed regulator. The output shaft of the reduction motor is installed with a main synchronous wheel The main synchronous wheel transmits torque and speed to the small synchronous wheel through a synchronous belt. The small synchronous wheel is coaxially installed with the second feeding wheel and the first pulley. The second feeding wheel is connected to the driven pulley through a flat belt. The driven pulley is installed at the lower right of the second feeding wheel, leaving a small movement gap with the discharge plate. A first pulley and a second pulley are installed at the upper right of the first pulley, and the first pulley and the second pulley coaxial with the second feeding wheel are installed on the same straight line of the right side plate. The first pulley is connected to the second pulley through the round belt, and another first pulley is installed on the second pulley The lower left side and the outer tight edge of the round belt make the rotation direction of the first pulley coaxial with the second feeding wheel opposite; the counter-rotating first pulley is coaxially installed with the third feeding wheel, and the fourth feeding wheel is installed at the lower right of the third feeding wheel and above the discharge plate, leaving a gap between the discharge plate and the discharge plate, and close to the output end; the discharge plate is installed at the lower right of the driven pulley, below the fourth feeding wheel, and on the right end side of the output end. The first feeding wheel is connected to the second discharge roller of the forming section of the mask body machine with a round belt, and a tensioning wheel is arranged on the inner side of the loose edge of the round belt connected to the second discharge roller end.

5. A flat mask machine according to claim 1, characterized in that: The first earband ultrasonic welding mechanism includes a first ultrasonic generator connected in sequence from bottom to top, a first transducer connected to the first ultrasonic generator, and a first welding head connected to the top of the first transducer and converting electrical energy into high-frequency vibration mechanical energy through the first transducer, and the first tooth-pressing welding head is arranged correspondingly to the first welding head up and down; the second earband ultrasonic welding mechanism includes a second ultrasonic generator connected in sequence from bottom to top, a second transducer connected to the second ultrasonic generator, and a second welding head connected to the top of the second transducer and converting electrical energy into high-frequency vibration mechanical energy through the second transducer, and the second tooth-pressing welding head is arranged correspondingly to the second welding head up and down; the tray conveying device is provided with a servo motor, a reducer, a synchronous belt transmission mechanism, four double-row sprocket assemblies fixed on the frame and arranged in a trapezoidal space, a conveying chain with a bent plate, and a plurality of trays arranged side by side fixed on the conveying chain with a bent plate by screws.

6. A flat mask machine according to claim 1, characterized in that: The ear band welding device is fixed to the workbench of the base frame through a pillar, a large top plate is provided on the top of the pillar, an upper fixed plate is provided above the large top plate, the upper fixed plate is fixedly connected to the large top plate through four connecting rods, and the pressure gear welding head mechanism is provided with a cylinder drive fixed to the upper fixed plate, the cylinder drives the sliding rods of the four linear bearing groups to move through the connecting screw, the connecting sleeve, the connecting block and the movable connecting plate, the four sliding rods are respectively connected to the first welding head fixing block and the second welding head fixing block, the first welding head fixing block and the second welding head fixing block are respectively connected to the first pressure A tooth welding head and a second tooth pressing welding head; two buffer columns are installed on the lower bottom surface of the upper fixed plate; the ear band descending mechanism is driven by a cylinder fixed in the middle of the large top plate, and two groups of linear bearing groups spaced and symmetrically arranged are fixed on the upper side of the large top plate. The ear band descending mechanism also includes a fixed block, a cushion block and a long movable plate. The cylinder connects the fixed block and the cushion block through a connecting rod and a cylinder connector, and the long movable plate is fixedly connected to the cushion block and the sliding rod of the two groups of linear bearing groups by bolts; the ear band rotating mechanism is fixed on the long movable plate of the ear band descending mechanism.

7. A flat mask machine according to claim 1, characterized in that: The ear belt pulling device includes a connecting base plate, a motor seat, a servo motor, a synchronous belt, a main synchronous wheel, a driven synchronous wheel, a linear guide, a bearing support, a cylinder bracket, an adjustment base plate, a cylinder ear belt pulling mechanism and a code block. The cylinder ear belt pulling mechanism includes a synchronous belt pressure plate, a connecting block, a pneumatic finger and the cylinder clamp. The lower bottom surface of the synchronous belt pressure plate is fixed on the slider of the linear guide. The upper side of the synchronous belt pressure plate clamps the synchronous belt through the connecting block. One end of the connecting block is connected to the pneumatic finger. Two symmetrical cylinder clamps are installed on the clamping claws of the pneumatic finger. The servo motor equipped with the main synchronous wheel is connected to the motor through the motor. The seat is fixed at the tail end of the connecting base plate, and the driven synchronous wheel at the other end is connected through the clamped synchronous belt and the cylinder ear belt pulling mechanism. The driven synchronous wheel is fixed to the bearing supports at both ends through the rotating shaft and the bearings at both ends. The two bearing supports are fixed to the connecting base plate by screws. The ear belt fixing block is fixed to the output end of the cylinder. The ear belt pressure block is pushed by the cylinder piston rod to move in the groove of the ear belt fixing block. The cylinder is fixed to the end of the connecting base plate through the cylinder bracket and the adjusting base plate. The cylinder ear belt pulling mechanism is equipped with an induction sheet, and an induction switch is installed on the front and back of the inner side of the connecting base plate.

8. A flat mask machine according to claim 1, characterized in that: The scissors mechanism is fixed to the ear strap welding device through two connection and fixing blocks set at a distance. The scissors mechanism includes a connection and fixing block, a support rod, a cylinder seat, a cylinder, a scissors seat, a connection block, a scissors center axis, a sliding shaft, a spring sleeve, a scissors, a cushion sleeve and a bearing. The inner sides of the two connection and fixing blocks installed on the columns of the ear strap welding device are provided with inner holes, and the support rod is fixed to the inner holes. The inner holes of the two cylinder seats pass through the support rod and are locked on the support rod with screw clamps. The two ends of the cylinder are fixedly connected to the cylinder seat and the scissors seat respectively, the cylinder seat is fixedly connected to the support rod, and the end of the cylinder piston rod is fixedly connected to one end of the connection block The connecting block installed at the end of the cylinder piston rod forms a hinge connection with the scissors through the scissors middle axis and a sliding shaft. The scissors middle axis is a hollow shaft structure. The sliding shaft passes through the scissors and the scissors middle axis. The scissors are fastened by the step of the sliding shaft and the end face of the scissors middle axis. The other end of the sliding shaft is equipped with the bearing so that the sliding shaft can slide guided in the waist-shaped groove of the scissors seat. The sliding shaft is equipped with a spring sleeve, a spring, a gasket and a locking nut to tighten the bearing. Four sleeves are fixed in the waist-shaped groove of the scissors seat with screws. The other end of the sleeve is equipped with two bearings, which provide guide limit for the scissors movement and control the opening and closing size of the scissors.

9. A flat mask machine according to claim 1, characterized in that: The finished product discharging and unloading device is provided with a cushion sleeve, a motor end side plate, a gear transmission end side plate, a reduction motor and a belt clamping transmission group. The finished product discharging and unloading device is fixed to the workbench through the cushion sleeve, and the reduction motor is installed at the upper tail end of the outer side of the motor end side plate, and the reduction motor output shaft is directly connected to the transmission shaft, and the transmission shaft and the driven shaft are respectively installed in the upper inner hole and the lower inner hole of the motor end side plate and the gear transmission end side plate through bearings at both ends, and two driving pulleys and two lower driving pulleys are respectively installed on the transmission shaft and the driven shaft at a distance, and the driving pulley is connected to the driven pulley through a flat belt, and the driven pulley is fixed to four driven pulley support rods through bearings and screws, and the four driven pulley support rods are respectively fixed on the upper and lower inner sides of the motor end side plate and the upper and lower inner sides of the gear transmission end side plate by screws, and the two lower driven pulley support rods are installed on the two upper driven pulleys The transmission gear is meshed with a driven gear, and the driven gear is fixed to the driven shaft of the gear transmission end side plate by a set screw, and four flat belts are respectively connected to four driven pulleys installed on the inner sides of the motor end side plate and the gear transmission end side plate through four flat belts to form a belt clamping transmission group; the tail end sides of the motor end side plate and the gear transmission end side plate are fixedly connected by a cylinder connecting plate, and a cylinder is installed in the middle upper inner hole on the cylinder connecting plate, and two guide members and two cylinder top plate guide pillars are symmetrically installed in the lower inner hole of the cylinder connecting plate, and the two cylinder top plate guide pillars pass through the inner holes of the two guide members, and the two cylinder top plate guide pillars are connected through the two inner holes of the push block, and are fixed to the piston rod output end of the cylinder to form an isosceles triangle space arrangement;The finished product receiving and conveying device comprises a transmission profile frame, a first conveying wheel group, a second conveying wheel group, a wide flat belt, a reduction motor and a mounting plate, a speed regulator, a first V-type pulley, a second V-type pulley, a V-belt and a material baffle plate. The first conveying wheel group and the second conveying wheel group are respectively fixed to the head end and the tail end of the transmission profile frame through their respective mounting plates and bearings. The reduction motor is fixed to the profile column at the head end of the transmission profile frame through the mounting plate. The inner hole of the first V-type pulley is fixed to the output shaft of the reduction motor through a fastening screw. The second V-type pulley is connected to the conveying shaft of the first conveying wheel group of the transmission profile frame and is connected to the first V-belt pulley through a V-belt. The speed regulator is mounted on the profile column at the head end of the transmission profile frame through the mounting plate, the first conveying wheel group is connected to the second conveying wheel group through the wide flat belt, the baffle plate is mounted on the inner side of the horizontal aluminum profile at the head end of the transmission profile frame, the head end of the finished product receiving and conveying device is mounted at the discharge position just below the finished product discharging and unloading device, the baffle plate is directly opposite to the lower right of the driven shaft of the finished product discharging and unloading device, and the baffle plate is spaced from the driven shaft, the molded masks after the finished product discharging and unloading device is unloaded are thrown to the head of the finished product receiving and conveying device, and the baffle plate blocks the thrown masks and accurately falls on the wide flat belt of the finished product receiving and conveying device. ; 10. A flat mask machine according to claim 1, characterized in that: It also includes a limit device and a pressure mask device, the limit device is fixed to the workbench by bolts, the limit device is provided with a limit plate, a first outer limit side plate, a second outer limit side plate, an inner limit plate and a protective cover; the pressure mask device includes a connecting column, a transverse connecting plate and a clamping plate, the limit device is fixedly installed on the two outer sides of the pressure mask device, one end of the clamping plate is fixed to the middle position of the transverse connecting plate by screws, and the other end of the clamping plate falls freely on the tray of the tray conveying device.

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