CN212499005U - N95 gauze mask bridge of nose strip welding production line - Google Patents

Abstract

The utility model discloses a N95 gauze mask bridge of nose strip welding production line belongs to machinery, be used for from the front to the back with hanging fixed tongs subassembly that the long filament one end of bridge of nose strip is fixed, with the disconnected silk subassembly of long filament cutting, will hang on the long filament bridge of nose strip welding at last gauze mask cloth, the ultrasonic welding subassembly in the middle of the gauze mask cloth down and draw the wire drawing tongs subassembly of opposite side from one side of gauze mask cloth with the long filament. The utility model has the advantages that: the long filaments are adopted to pull and fix the nose bridge strip and simultaneously weld the nose bridge strip, so that the nose bridge strip is still in a fixed state during welding, the relative movement between the nose bridge strip and the mask cloth is not needed to be worried, and the lateral feeding reduces the requirement on the use space between the upper mask cloth and the lower mask cloth due to the fact that the long filaments are adopted to be fixed and the pollution problem is avoided.

Description

N95 gauze mask bridge of nose strip welding production line

Technical Field

The utility model relates to the field of machinary, particularly, relate to a N95 gauze mask bridge of nose strip welding production line.

Background

The unavoidable meeting of N95 gauze mask can involve the line of sending and the weldment work of bridge of the nose line in process of production, there are three kinds of situations that weld in the gauze mask inboard, cloth intermediate level or outside in the current N95 gauze mask bridge of the nose line, when the welding was in the cloth intermediate level, the line of sending of bridge of the nose line generally adopted and send the line with the same direction of gauze mask cloth direction of delivery, need form the horn mouth between two gauze masks cloth, just so have enough space to hold and send the line equipment.

And welding position often is not synchronous with bridge of the nose strip fixed position, fixes bridge of the nose strip under on the gauze mask cloth promptly, welds again, appears the displacement between bridge of the nose strip and the gauze mask cloth easily at this in-process, can appear the problem that bridge of the nose strip dropped sometimes even. Generally, the adhesive is added between a nose bridge strip and lower mask cloth in the prior art, so that the problem of relative displacement between the nose bridge strip and the mask cloth is solved to a certain extent, but the adhesive still has the moving condition due to the fact that the adhesive needs a certain time for curing, and the adhesive has certain pollution, particularly, when the adhesive is used on products such as masks and the like with higher requirements on sanitation and safety, the use requirements of the adhesive are very high, very precise equipment and process design are needed, so that the production of N95 masks is greatly increased, and the effect is not good.

The utility model discloses a utility model patent that bulletin number is CN208318346U discloses a full-automatic gauze mask machine nose line group mechanism, including decollator, push plate, wire feeding wheel, nose line cutter, press from both sides tight blade holder, the decollator front side is connected with the wire feeding wheel, and the wire feeding wheel comprises cam decollator, wire feeding friction pulley, wire feeding cam, driven gear, driving gear, wire feeding drive sprocket, extension spring, chain drive route, take-up pulley and main drive chain, and the side of wire feeding wheel is connected with the nose line cutter, and the below of nose line cutter is provided with presss from both sides tight blade holder, and the rear that presss from both sides tight blade holder is provided with push plate. The feeding is carried out from the direction of a cloth bell mouth, the equipment is complex, and the problems of low feeding position precision, low efficiency, easy sliding after feeding and the like exist.

SUMMERY OF THE UTILITY MODEL

To the nose bridge strip that exists among the prior art send line and welding set equipment complicated, and there is pay-off position precision low, inefficiency, appear sliding after the pay-off easily, still can produce the pollution scheduling problem, the utility model discloses a N95 gauze mask nose bridge strip welding production line and production method thereof, adopt the long filament to pull fixedly to the nose bridge strip, and weld simultaneously, make the nose bridge strip still be in the stationary state when welding, do not worry the relative movement between nose bridge strip and the gauze mask, and owing to the adoption be that the long filament is fixed, the pollution-free problem, the side direction pay-off has reduced the requirement to usage space between last gauze mask and the lower gauze mask. The specific technical scheme is as follows:

a welding production line for N95 mask nose bridge strips comprises a fixed gripper assembly, a filament cutting assembly, an ultrasonic welding assembly and a wire drawing gripper assembly, wherein the fixed gripper assembly is fixedly arranged on a rack from front to back and used for fixing one end of a filament for hanging the nose bridge strips, the filament cutting assembly is used for cutting the filament, the ultrasonic welding assembly is used for welding the filament hanging on the upper nose bridge strips in the middle of upper mask cloth and lower mask cloth, the filament drawing gripper assembly is used for drawing the filament from one side of the mask cloth to the other side of the mask cloth, the wire drawing gripper assembly comprises a wire drawing cylinder, a wire drawing rod and a first gripper assembly, one end of the filament is gripped and loosened, and the wire; one end of the wire drawing rod is fixedly arranged at the movable end of the wire drawing cylinder, and the other end of the wire drawing rod is fixedly arranged with the first gripper assembly.

Furthermore, the first gripper assembly comprises a gripper cylinder, a gripper and two gripper fixing seats which are oppositely arranged up and down, the gripper cylinder is fixedly installed on the pull screw rod, one end of each gripper fixing seat is rotatably connected with the movable end of the gripper cylinder, and the gripper is fixedly installed on the inner side of each gripper fixing seat.

Further, the tongs fixing base is including being used for the installation the tongs installation department of tongs with be used for installing the mount pad connecting portion on the tongs cylinder expansion end, the tongs installation department with mount pad connecting portion tip links to each other and forms the contained angle, the tongs installation department with mount pad connecting portion contained angle department with tongs cylinder swivelling joint, the mount pad connecting portion are kept away from tongs installation department one end with tongs cylinder expansion end swivelling joint.

Further, the included angle formed by connecting the hand grip mounting part and the end part of the connecting part of the mounting seat is 70-100 degrees.

Further, a mounting beam is mounted right above the rack, the fixed gripper assembly is fixedly mounted below the mounting beam, the fixed gripper assembly comprises a fixed gripper cylinder, a fixed gripper rod and a second gripper assembly, and the fixed gripper cylinder is fixedly mounted on the rack; one end of the fixed gripper rod is fixedly arranged at the movable end of the fixed gripper cylinder, and the other end of the fixed gripper rod is fixedly provided with the second gripper assembly.

Further, the second gripper assembly structure is the same as the first gripper assembly structure.

Further, the wire breaking assembly comprises a wire breaking cylinder, a wire breaking cylinder fixing plate, a wire breaking scissors and a wire breaking scissors mounting frame, the wire breaking cylinder is fixedly mounted on the fixed gripper rod, a scissors push block used for pushing the wire breaking scissors to move up and down is formed at the movable end of the wire breaking cylinder, the scissors push block is used right above the wire breaking scissors, and a wire breaking scissors rotating shaft is mounted on the wire breaking scissors mounting frame.

Furthermore, 4 scissors stop levers vertical to the cutting surface of the wire cutting scissors are further installed on the wire cutting scissors installing frame, and the 4 scissors stop levers are respectively located at the upper position and the lower position of two knife backs of the wire cutting scissors.

Furthermore, a strip-shaped mounting opening used for mounting the scissors stop lever and enabling the scissors stop lever to be adjusted up and down is formed in the position, corresponding to each scissors stop lever, on the wire-breaking scissors mounting frame.

Further, the ultrasonic welding subassembly includes ultrasonic wave air cylinder, ultrasonic vibrator and ultrasonic bonding grinding apparatus down, ultrasonic wave air cylinder fixed mounting is in down on the installation roof beam, ultrasonic vibrator with ultrasonic bonding grinding apparatus fixed mounting is in ultrasonic wave air cylinder expansion end down.

Furthermore, a plurality of convex pressing blocks are uniformly distributed on the lower surface of the ultrasonic welding grinding tool.

The utility model also provides a welding production method of N95 gauze mask bridge of the nose strip, including following step:

the method comprises the following steps that firstly, one end of a filament is clamped and then pulled leftwards, the filament stops moving after reaching a designated position on the left side of mask cloth, a nose bridge strip is located at a designated position between upper mask cloth and lower mask cloth, and the filament is clamped and fixed by a fixed gripper assembly;

step two, starting the ultrasonic welding assembly, and pressing the upper mask cloth, the nose bridge strip and the lower mask cloth downwards;

and step three, cutting the filaments on the left side of the fixed gripper assembly by the filament cutting assembly, and simultaneously starting the step one.

Has the advantages that:

adopt the utility model discloses technical scheme produces beneficial effect as follows:

(1) the nose bridge strip is pulled and fixed by the filament, so that the nose bridge strip is still in a fixed state during welding, relative movement between the nose bridge strip and the lower mask cloth is prevented, and the product yield and the nose bridge strip feeding precision are improved; compared with an adhesive, the long filament is adopted for fixing, so that the pollution of the adhesive to the mask cloth before curing can be effectively prevented, and the mask cloth is safe and environment-friendly;

(2) the nose bridge line is generally fed in the same direction as the conveying direction of the mask cloth, and a horn mouth needs to be formed between two pieces of mask cloth, so that enough space is provided for accommodating line feeding equipment; the lateral feeding mode is adopted, feeding can be realized without a horn mouth, dependence of nose bridge strip feeding on upstream and downstream processes in mask production is greatly reduced, and occupation of space is reduced;

(3) the nose bridge strip is fed and welded at the same position, and the nose bridge strip can be welded after being fixed, so that the time from fixing to welding of the nose bridge strip is shortened, and the production process is shortened;

(4) the mode that the welding adopted ultrasonic wave grinding apparatus board to press compares in a roll-in production line can only use a compression roller, and this patent can set up multiunit board pressure equipment simultaneous working simultaneously around the gauze mask machine, has not only improved work efficiency, because of accomplishing same regional gauze mask cloth welding at the same time moreover, the welding effect is better more even.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a first schematic view of a welding line for manufacturing a nose bridge of an N95 mask according to a preferred embodiment of the present invention;

FIG. 2 is a second schematic view of a welding line for manufacturing a nose bridge of an N95 mask according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a preferred nose bridge feeding assembly of the present invention;

FIG. 4 is a schematic view of a feeding structure of a feeding plate according to a preferred embodiment of the present invention;

FIG. 5 is a structural view of the present invention showing a preferred filament covering the arc-shaped groove of the nose bridge;

FIG. 6 is a schematic diagram of a preferred wire drawing gripper assembly of the present invention;

FIG. 7 is a schematic view of a first gripper assembly according to the preferred embodiment of the present invention;

FIG. 8 is a schematic view of a preferred wire-breaking assembly of the present invention;

fig. 9 is a layout diagram of the ultrasonic welding abrasive tool pressing blocks of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 3-5, the N95 mask nose bridge welding production line comprises a fixed gripper assembly 5 fixedly mounted on a frame from front to back and used for fixing one end of a filament 11 for hanging a nose bridge 12, a filament cutting assembly 6 for cutting the filament, an ultrasonic welding assembly 7 for welding the nose bridge hung on the filament in the middle of an upper mask cloth 15 and a lower mask cloth 16, and a wire drawing gripper assembly 8 for drawing the filament from one side of the mask cloth to the other side. The nose bridge strip is pulled and fixed by the filament, so that the nose bridge strip is still in a fixed state during welding, relative movement between the nose bridge strip and the lower mask cloth is prevented, and the product yield and the nose bridge strip feeding precision are improved; and compared with the adhesive, the long filament fixing method can effectively prevent the adhesive from polluting the mask cloth before curing, and is safe and environment-friendly.

Because the embodiment focuses on that the nose bridge strip is fixed on the filament and then welded, the embodiment focuses on how the filament suspended with the nose bridge strip is from one side of the mask cloth to the other side of the mask cloth, how the filaments on the two sides of the nose bridge strip are fixed, and in the process of fixing and completing welding, in order to meet the requirement of feeding the next nose bridge strip, how the filament on the feeding side is cut off and then used as the end part of the next pulled nose bridge strip.

In actual production, the combination of the nose bridge strip and the filament is also a very critical technical point and is a technical problem to be further solved, wherein an arc-shaped groove for the filament through hole is arranged on the nose bridge strip, and the filament is pushed into the arc-shaped groove through a push rod. Specifically referring to fig. 2-5, the N95 mask nose bridge welding production line comprises a wire feeding roller 2, a wire guiding roller 3, a nose bridge feeding assembly 4, a fixed gripper assembly 5, a wire breaking assembly 6, an ultrasonic welding assembly 7 and a wire drawing gripper assembly 8 which are fixedly mounted on a frame 1 from front to back, wherein the nose bridge feeding assembly 4 comprises a nose bridge feeding groove 41, an inclined feeding plate 42 and a wire pushing assembly 43 for pushing a filament 11 into an arc-shaped groove 13 of a nose bridge 12, the upper end of the inclined feeding plate 42 is fixedly mounted at the outlet of the nose bridge feeding groove 41, an arc-shaped mounting plate 44 is formed at the lower end of the inclined feeding plate 42, and the wire pushing assembly 43 is fixedly mounted at a position corresponding to the arc-shaped mounting plate 44. The nose bridge strip is pulled and fixed by the filament, so that the nose bridge strip is still in a fixed state during welding, relative movement between the nose bridge strip and the lower mask cloth is prevented, and the product yield and the nose bridge strip feeding precision are improved; compared with an adhesive, the long filament is adopted for fixing, so that the pollution of the adhesive to the mask cloth before curing can be effectively prevented, and the mask cloth is safe and environment-friendly;

the upper surface of the arc mounting plate 44 is a concave arc groove, and the lowest end of the arc mounting plate is provided with a nose bridge baffle 45.

A clamping groove 46 for clamping one side of the nose bridge strip 12 is formed on one side of the nose bridge strip baffle 45 close to the arc-shaped mounting plate 44.

Referring to fig. 3, the nose bridge feeding groove 41 comprises a feeding groove body 411 and an inclined groove plate 412 arranged in the feeding groove body 411, the inclined groove plate 412 is inclined downwards towards the outlet 413 of the nose bridge feeding groove, a feeding plate 414 for feeding the feeding groove body to the inclined feeding plate 42 is formed at the outlet 413 of the nose bridge feeding groove, and a feeding plate control cylinder 415 for controlling the feeding plate 414 to move up and down is arranged on the lower surface of the feeding plate 414.

Referring to fig. 4, the wire pushing assembly 43 includes a wire pushing cylinder 431 and a fixed pushing handle 432 for pushing the filament 11 into the arc-shaped groove 13 of the nose bridge strip 12, the wire pushing cylinder 431 is fixedly mounted on the frame 1, the fixed pushing handle 432 is fixedly mounted at the movable end of the wire pushing cylinder 431, a through hole (not shown in the figure) for the filament to pass through is formed in the fixed pushing handle 432, and the wire pushing direction of the wire pushing cylinder 431 may be horizontal, may be the same as the inclination angle of the inlet of the arc-shaped groove 13, or may be slightly larger than the inclination angle of the inlet of the arc-shaped groove 13.

Referring to fig. 1 and 6, the wire drawing gripper assembly 8 comprises a wire drawing cylinder 81, a wire drawing rod 82 and a first gripper assembly 83, wherein the wire drawing cylinder 81 is fixedly mounted on the frame 1; one end of the wire drawing rod 82 is fixedly arranged at the movable end of the wire drawing cylinder 81, and the other end of the wire drawing rod is fixedly arranged with the first gripper assembly 83.

Referring to fig. 7, the first gripper assembly 83 includes a gripper cylinder 831, a gripper 832 and two gripper fixing seats 833 arranged oppositely up and down, the gripper cylinder 831 is fixedly installed on the pull screw 82, one end of each of the two gripper fixing seats 833 is rotatably connected to the movable end of the gripper cylinder 831, and the gripper 832 is fixedly installed on the inner side of the gripper fixing seat 833.

Tongs fixing base 833 is including being used for the installation tongs installing part 834 of tongs 832 and being used for installing mount pad connecting portion 835 on tongs cylinder 831 expansion end, tongs installing part 834 with mount pad connecting portion 835 tip links to each other and forms the contained angle, tongs installing part 834 with mount pad connecting portion 835 contained angle department with tongs cylinder 831 swivelling joint, mount pad connecting portion 835 is kept away from tongs installing part 834 one end with tongs cylinder 831 expansion end swivelling joint.

The included angle formed by the connection of the gripper mounting part 834 and the end part of the mounting seat connecting part 835 is 70-100 degrees.

Referring to fig. 1, a mounting beam 14 is mounted right above a frame 1, the fixed gripper assembly 5 is fixedly mounted below the mounting beam 14, the fixed gripper assembly 5 comprises a fixed gripper cylinder 51, a fixed gripper rod 52 and a second gripper assembly 53, and the fixed gripper cylinder 51 is fixedly mounted on the frame 1; one end of the fixed gripper rod 52 is fixedly arranged at the movable end of the fixed gripper cylinder 51, and the other end of the fixed gripper rod is fixedly provided with the second gripper assembly 53.

The second hand grip assemblies 53 are identical in construction to the first hand grip assemblies 83.

Referring to fig. 8, the wire breaking assembly 6 includes a wire breaking cylinder 61, a wire breaking cylinder fixing plate 62, a wire breaking scissors 63 and a wire breaking scissors mounting frame 64, the wire breaking cylinder 61 is fixedly mounted on the fixed gripper rod 52, a scissors push block 65 for pushing the wire breaking scissors 63 to move up and down is formed at the movable end of the wire breaking cylinder 61, the scissors push block 65 is used right above the wire breaking scissors 63, and the rotating shaft of the wire breaking scissors 63 is mounted on the wire breaking scissors mounting frame 64.

The wire cutting scissors mounting frame 64 is further provided with 4 scissors stop levers 66 perpendicular to the cutting surface of the wire cutting scissors 63, and the 4 scissors stop levers 66 are respectively positioned at the upper position and the lower position of two knife backs of the wire cutting scissors 63.

Strip-shaped mounting openings 67 used for mounting the scissors blocking rods 66 and enabling the scissors blocking rods 66 to be adjusted up and down are formed in the positions, corresponding to the scissors blocking rods 66, of the wire breaking scissors mounting frame 64.

Referring to fig. 1, the ultrasonic welding assembly 7 includes an ultrasonic down-pressure cylinder 71, an ultrasonic vibrator 72, and an ultrasonic welding grinder 73, wherein the ultrasonic down-pressure cylinder 71 is fixedly mounted on the mounting beam 14, and the ultrasonic vibrator 72 and the ultrasonic welding grinder 73 are fixedly mounted at a movable end of the ultrasonic down-pressure cylinder 71.

Referring to fig. 9, a plurality of convex pressing blocks 74 are uniformly distributed on the lower surface of the ultrasonic welding grinding tool 73.

In order to further position the position of the nose bridge strip on the filament, a node can be arranged on the filament to prevent the nose bridge strip from sliding back and forth. The nose bridge strip feeding and welding device is placed at the same position, the nose bridge strip can be welded after being fixed, the time from fixing to welding of the nose bridge strip is shortened, and the production process is shortened. The mode that the welding adopted ultrasonic wave grinding apparatus board to press compares in a roll-in production line can only use a compression roller, and this patent can set up multiunit board pressure equipment simultaneous working simultaneously around the gauze mask machine, has not only improved work efficiency, because of accomplishing same regional gauze mask cloth welding at the same time moreover, the welding effect is better more even.

In addition, when pushing down, can also set up automatic fine setting subassembly on ultrasonic welding subassembly 7, automatic fine setting subassembly is including the position sensor who is used for monitoring bridge of the nose strip position and the grinding apparatus position control subassembly that is used for controlling the ultrasonic welding grinding apparatus to carry out the fine setting, according to the actual position of bridge of the nose strip, carries out fine adjustment to the ultrasonic welding grinding apparatus.

Of course, a monitoring device can be arranged on one side of the nose bridge strip, which enters the inlet cover cloth, so that the nose bridge strip entering the inlet cover cloth is monitored and matched with the ultrasonic welding assembly to complete welding.

The embodiment also provides a welding production method of the N95 mask nose bridge strip, which comprises the following steps:

step one, after being drawn out from a yarn feeding roller, a filament enters a nose bridge strip feeding assembly through a yarn guide roller;

secondly, the nose bridge strip is arranged in a nose bridge strip feeding groove, under the pushing of a feeding plate control cylinder, the position of the arc-shaped mounting plate is reached through an inclined feeding plate, a section of arc-shaped groove is formed in the upper surface of the nose bridge strip, and the filament is pushed into the arc-shaped groove of the nose bridge strip by starting a filament pushing assembly;

step three, clamping one end of the filament by the wire drawing gripper assembly, then pulling the filament to the left, stopping moving after reaching a specified position on the left side of the mask cloth, positioning the nose bridge strip at a specified position between the upper mask cloth 15 and the lower mask cloth 16, and clamping and fixing the filament by the fixed gripper assembly;

step four, starting the ultrasonic welding assembly, and pressing the upper mask cloth 15, the nose bridge strip and the lower mask cloth 16 downwards; simultaneously starting the step two;

and step five, cutting the filaments on the left side of the fixed gripper assembly by the filament cutting assembly, and simultaneously starting the step three.

The nose bridge line is generally fed in the same direction as the conveying direction of the mask cloth, and a horn mouth needs to be formed between two pieces of mask cloth, so that enough space is provided for accommodating line feeding equipment; this patent adopts the mode of side direction feeding, does not need the horn mouth can realize the pay-off, greatly reduced bridge of the nose strip pay-off to the dependence of gauze mask production upper and lower reaches process, reduced the occupation to the space.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. The utility model provides a N95 gauze mask bridge of nose strip welding production line, its characterized in that, includes from the front to back fixed mounting be used for in the frame hang the fixed tongs subassembly of the long filament one end of bridge of nose strip fixed, with the disconnected silk subassembly of long filament cutting, will hang on the long filament ultrasonic welding subassembly of bridge of nose strip welding in the middle of last gauze mask cloth, lower gauze mask cloth and draw the filament from gauze mask cloth one side to the wire drawing tongs subassembly of opposite side, ultrasonic welding subassembly includes ultrasonic wave pushes down cylinder, ultrasonic vibrator and ultrasonic bonding grinding apparatus, ultrasonic wave pushes down cylinder fixed mounting on the installation roof beam, ultrasonic vibrator with ultrasonic bonding grinding apparatus fixed mounting is in ultrasonic wave pushes down the cylinder expansion end.

2. The production line for welding the nose bridge of an N95 mask according to claim 1, wherein a plurality of convex pressing blocks are uniformly distributed on the lower surface of the ultrasonic welding grinding tool.

3. The welding production line of the nose bridge of the N95 mask according to claim 1, wherein the wire drawing gripper assembly comprises a wire drawing cylinder, a wire drawing rod and a first gripper assembly for gripping and releasing one end of a filament, and the wire drawing cylinder is fixedly mounted on the frame; one end of the wire drawing rod is fixedly arranged at the movable end of the wire drawing cylinder, and the other end of the wire drawing rod is fixedly arranged with the first gripper assembly.

4. The welding production line of N95 mask nose bridge strips as claimed in claim 3, wherein the first gripper assembly comprises a gripper cylinder, a gripper and two gripper fixing seats oppositely arranged up and down, the gripper cylinder is fixedly mounted on the pull rod, one end of each of the two gripper fixing seats is rotatably connected with the movable end of the gripper cylinder, and the gripper is fixedly mounted on the inner side of the gripper fixing seat.

5. The N95 mask nose bridge strip welding production line of claim 4, wherein the hand grip fixing seat comprises a hand grip mounting portion for mounting the hand grip and a mounting seat connecting portion for mounting on the movable end of the hand grip cylinder, the end portions of the hand grip mounting portion and the mounting seat connecting portion are connected to form an included angle, the included angle between the hand grip mounting portion and the mounting seat connecting portion is rotatably connected with the hand grip cylinder, and one end, far away from the hand grip mounting portion, of the mounting seat connecting portion is rotatably connected with the movable end of the hand grip cylinder.

6. The welding production line of N95 mask nose bridge strips as claimed in claim 5, wherein the angle formed by the connection of the finger grip mounting portion and the end of the mounting seat connecting portion is 70-100 °.

7. The welding production line of the nose bridge bars of the N95 mask according to claim 6, wherein a mounting beam is mounted directly above the frame, the fixed gripper assembly is fixedly mounted below the mounting beam, the fixed gripper assembly comprises a fixed gripper cylinder, a fixed gripper rod and a second gripper assembly, and the fixed gripper cylinder is fixedly mounted on the frame; one end of the fixed gripper rod is fixedly arranged at the movable end of the fixed gripper cylinder, and the other end of the fixed gripper rod is fixedly provided with the second gripper assembly.

8. The welding line of nose bridge bars of N95 masks according to claim 7, wherein the second hand grip assembly structure is the same as the first hand grip assembly structure.

9. The welding production line of the nose bridge bar of the N95 mask according to claim 7, wherein the wire breaking assembly comprises a wire breaking cylinder, a wire breaking cylinder fixing plate, a wire breaking scissors and a wire breaking scissors mounting bracket, the wire breaking cylinder is fixedly mounted on the fixed grab bar, a scissors pushing block for pushing the wire breaking scissors to move up and down is formed at a movable end of the wire breaking cylinder, the scissors pushing block is used right above the wire breaking scissors, and a wire breaking scissors rotating shaft is mounted on the wire breaking scissors mounting bracket.

10. The welding production line of the bridge of the nose of the N95 mask according to claim 9, wherein the wire cutter mounting bracket is further provided with 4 scissors blocking rods perpendicular to the cutting surface of the wire cutter, and the 4 scissors blocking rods are respectively located at the upper and lower positions of the two backs of the wire cutter.

11. The production line of welding a nose bridge of an N95 mask according to claim 10, wherein a strip-shaped mounting opening for mounting the scissors stop bar and adjusting the scissors stop bar up and down is formed on the scissors mounting rack at a position corresponding to each scissors stop bar.

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