CN210940528U

CN210940528U - Intelligence gauze mask machine and bridge of the nose strip cutting device

Info

Publication number: CN210940528U
Application number: CN202021002664.9U
Authority: CN
Inventors: 林小博; 刘璐
Original assignee: Guangzhou Pulisi Technology Co, Ltd
Current assignee: Guangzhou Pulisi Technology Co, Ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-07-07
Anticipated expiration: 2030-06-04

Abstract

The utility model relates to a bridge of nose strip cutting device, it includes the frame and locates the shearing mechanism in the frame, power unit and direction mould, the frame includes bottom plate and clamp plate, form defeated material clearance between bottom plate and the clamp plate, shearing mechanism includes support frame and base, form the hem clearance between base and the support piece, the top of base sets up traction wheel and main break bar, form between traction wheel and the base and send the line clearance, be equipped with the cutter piece on the main break bar, still be equipped with in the frame and be used for driving the power unit that traction wheel and main break bar rotated, the downstream side of main break bar is equipped with the direction mould, the direction mould is equipped with the biography line pore, a bridge of nose strip that is sheared is used for carrying. Compared with the prior art, the nose bridge strip cutting device provided by the utility model has the advantages of high production efficiency and good compatibility. The utility model also provides an intelligence gauze mask machine, it has adopted foretell bridge of the nose strip cutting device, consequently, this intelligence gauze mask machine has advantages such as production efficiency height, compatibility are good equally.

Description

Intelligence gauze mask machine and bridge of the nose strip cutting device

Technical Field

The utility model relates to a protective articles technical field especially relates to an intelligence gauze mask machine and bridge of the nose strip cutting device.

Background

The production process of the mask comprises the steps of creasing, edge covering, nose bridge strip assembling, pressure welding, die cutting, ear strip welding, packaging and the like, wherein the nose bridge strip assembling refers to that a long nose bridge strip is cut into a plurality of short strips and then respectively sent to mask piece manufacturing materials with formed edge covering, and preparation is made for the subsequent steps of pressure welding and the like. The existing nose bridge strip cutting device and the edge covering device are arranged separately, so that the whole mask production line is lengthened, the operation space for assembling the nose bridge strip is increased, and the production efficiency of the mask production line is low; in addition, the nose bridge strip cutting device in the existing disposable mask production line and the KN95 mask production line cannot be compatible with each other, two sets of different nose bridge strip cutting devices need to be prepared during actual production, the use and the maintenance are very inconvenient, and the cost control is not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a bridge of nose strip cutting device can realize the shearing and the transport of the bridge of nose strip in the gauze mask production process, has promoted production efficiency, has good compatibility moreover.

Based on the structure, the utility model provides a nose bridge strip cutting device, which comprises a frame and a shearing unit arranged on the frame;

the frame comprises a bottom plate and a pressing plate arranged above the bottom plate, and a conveying gap for conveying mask melt-blown cloth and non-woven fabric is formed between the bottom plate and the pressing plate;

the shearing unit includes:

the cutting mechanism is arranged on the rack and comprises a base and a support frame, the support frame is provided with a traction wheel and a main cutter wheel, the traction wheel is arranged above the base, a wire passing gap for conveying a nose bridge strip is formed between the traction wheel and the base, the main cutter wheel is arranged above the base and positioned on the downstream side of the traction wheel, and the main cutter wheel is provided with a cutter blade for cutting the nose bridge strip;

the power mechanism is arranged on the rack and used for driving the traction wheel and the main cutter wheel to rotate;

the guide die is arranged on the rack and located on the downstream side of the main cutter wheel, and the guide die is provided with a wire conveying pore channel for conveying the sheared nose bridge strip.

As the preferred scheme, the base pass through connecting piece fixed connection in the side of support frame, the connecting piece is including the gleitbretter that is equipped with a word hole and locating fastening bolt in the word hole, the gleitbretter with base fixed connection, fastening bolt passes a word hole and with support frame fixed connection.

Preferably, the connecting pieces are provided with two groups, and the two groups of connecting pieces are arranged in the front and back direction along the conveying direction of the nose bridge strip.

Preferably, a gland is arranged at the top of the base, a line passing pore passage through which the nose bridge strip can pass is formed in the gland, and an opening through which the traction wheel extends into the line passing pore passage is formed in the gland.

Preferably, the top of the base is provided with an installation groove, a movable wheel is arranged in the installation groove, the movable wheel is located below the traction wheel, and the gap is formed between the traction wheel and the movable wheel.

Preferably, the number of the traction wheels is more than two, the movable wheels are arranged below each traction wheel, and the traction wheels correspond to the movable wheels one by one.

According to the preferable scheme, a first limiting nut is arranged at the top of the supporting frame, a first screw rod arranged in the height direction of the supporting frame penetrates through the first limiting nut, a first sliding block is connected to the bottom of the first screw rod, and a traction wheel shaft used for arranging the traction wheel penetrates through the first sliding block.

According to the preferable scheme, a second limiting nut is further arranged at the top of the supporting frame, a second screw rod arranged in the height direction of the supporting frame penetrates through the second limiting nut, a second sliding block is connected to the bottom of the second screw rod, and a main cutter wheel shaft used for arranging the main cutter wheel penetrates through the second sliding block.

As a preferred scheme, the power mechanism comprises a servo motor and a transmission assembly, the transmission assembly comprises a first synchronizing wheel arranged on the traction wheel shaft, a second synchronizing wheel arranged on the main cutter wheel shaft and a third synchronizing wheel arranged on the output shaft of the servo motor, the first synchronizing wheel, the second synchronizing wheel and the third synchronizing wheel are all positioned on one side, back to the traction wheel and the main cutter wheel, of the support frame, and the first synchronizing wheel, the second synchronizing wheel and the third synchronizing wheel are connected through synchronous belt transmission.

Preferably, the transmission assembly further comprises a correction wheel, a wheel shaft of the correction wheel is arranged on the support frame and can slide along the height direction of the support frame, and the correction wheel is arranged between the first synchronous wheel and the second synchronous wheel and used for adjusting and tensioning the synchronous belt.

Preferably, the guide die is arranged obliquely downwards relative to a horizontal plane, the wire duct is a hollow duct, and the aperture of the hollow duct is gradually reduced along the conveying direction of the nose bridge strip.

Preferably, the number of the shearing units is two, and the two shearing units are symmetrically arranged on the frame.

Another object of the utility model is to provide an intelligence gauze mask machine, it has adopted the aforesaid bridge of the nose strip cutting device.

The embodiment of the utility model provides a pair of nose bridge strip cutting device compares with prior art, and its beneficial effect lies in:

when the nose bridge strip cutting device is used for producing disposable masks, mask melt-blown cloth and non-woven fabric which come out from the creasing mechanism pass through the conveying gap, one side edge of the mask melt-blown cloth and the non-woven fabric passes through the hem gap and reaches the forming gap, in the process, the edge of the mask melt-blown cloth and the non-woven fabric is quickly folded to be in place due to the gradual reduction of the bending radius of the first cambered surface, meanwhile, the long-strip nose bridge strip penetrates through the wire passing gap under the driving of the traction wheel to reach the main cutter wheel, then is cut by the cutter blade on the main cutter wheel to form a plurality of short strips with equal length, the cut short nose bridge strips enter the wire conveying channel of the guide die under the pushing of the cutter blade along with the rotation of the main cutter wheel and fall into the hems of the mask melt-blown cloth and the non-woven fabric through the wire conveying channel, and finally the mask melt-blown cloth and the non-woven fabric enter the welding position of a subsequent welding mechanism, and obtaining the mask sheet formed by welding. Based on the nose bridge strip cutting device, when the nose bridge strip cutting device is used for a disposable mask production line, the cutting of the nose bridge strip and the edge covering of mask melt-blown cloth and non-woven fabrics can be completed simultaneously, so that the operation space of a nose bridge strip assembling process is reduced, the production line is shortened, and the production efficiency of masks is improved; when the nose bridge strip cutting device is used for producing the KN95 mask, the nose bridge strip is sent into the wire feeding gap, and the cut nose bridge strip is sent into other mechanisms through the wire conveying pore passage of the guide die after being cut by the cutter wheel. In the process, the material conveying gap, the folding gap, the forming gap of the guide die and the like of the nose bridge strip cutting device do not play a role any more, but other parts such as the shearing mechanism and the wire feeding duct of the guide die and the like still can play a role in shearing and conveying the nose bridge strip. Therefore, this bridge of the nose strip cutting device can adapt to disposable gauze mask production line and KN95 gauze mask production line simultaneously, and its compatibility is good, and the practicality is high.

The utility model also provides an intelligence gauze mask machine, because it has adopted foretell bridge of the nose strip cutting device, consequently have advantages such as production efficiency is high, compatible good equally.

Drawings

Fig. 1 is a schematic structural view of a nose bridge strip cutting device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a shearing mechanism according to an embodiment of the present invention;

fig. 3 is a second schematic structural diagram of a shearing mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view of a feeding gap and a folding gap according to an embodiment of the present invention;

FIG. 5 is a second schematic view of the feeding gap and the folding gap according to the embodiment of the present invention;

fig. 6 is a schematic connection diagram of the shearing mechanism and the power mechanism according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of a shearing mechanism according to an embodiment of the present invention;

fig. 8 is one of the schematic structural diagrams of the guiding mold according to the embodiment of the present invention;

fig. 9 is a second schematic structural view of a guiding mold according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a nose bridge strip cutting device according to another embodiment of the present invention.

In the figure: 1. a frame; 11. a base plate; 12. pressing a plate; 13. a feeding gap; 100. a shearing unit; 2. a shearing mechanism; 21. a support frame; 22. a base; 221. sliding blades; 222. a gland; 223. an opening; 23. a hem gap; 24. a traction wheel; 241. a traction axle; 242. a movable wheel; 25. a main cutter wheel; 251. a main cutter wheel shaft; 252. cutting a blade; 26. a wire passing gap; 27. a first screw; 271. a first slider; 28. a second screw; 281. a second slider; 3. a power mechanism; 31. a servo motor; 32. a first synchronizing wheel; 33. a second synchronizing wheel; 34. a third synchronizing wheel; 35. a synchronous belt; 36. a correction wheel; 4. guiding the die; 41. a first molding section; 42. a second molding section; 43. a forming gap; 44. a wire duct.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and "second" information may also be referred to as "first" information without departing from the scope of the present invention.

As shown in fig. 1 to 9, the utility model provides a nose bridge cutting device, which comprises a frame 1 and a shearing unit 100 arranged on the frame 1, specifically, the frame 1 comprises a bottom plate 11 and a pressing plate 12 arranged above the bottom plate 11, and a feeding gap 13 for conveying mask melt-blown cloth and non-woven cloth is formed between the bottom plate 11 and the pressing plate 12;

the shearing unit 100 comprises a shearing mechanism 2, a power mechanism 3 and a guide die 4, the shearing mechanism 2 is arranged on the bottom plate 11 and comprises a support frame 21 and a base 22 arranged beside the support frame 21, a flanging gap 23 communicated with the material conveying gap 13 is formed between the support frame 21 and the base 22, a traction wheel 24 and a main cutter wheel 25 are arranged on the support frame 21, the traction wheel 24 is arranged above the base 22, a wire passing gap 26 for conveying nose bridge strips is formed between the traction wheel 24 and the base 22, the main cutter wheel 25 is arranged above the base 22 and is positioned at the downstream side of the traction wheel 24, and a cutter blade 252 for shearing the nose bridge strips is arranged on the main cutter wheel 25;

the power mechanism 3 is arranged on the bottom plate 11 and used for driving the traction wheel 24 and the main cutter wheel 25 to rotate;

the guide die 4 is disposed above the pressing plate 12 and on the downstream side of the main cutter wheel 25, and specifically, the guide die 4 includes a first forming portion 41 and a second forming portion 42 disposed above the first forming portion 41, the first forming portion 41 has a first arc surface connecting a top surface and a side surface thereof, the first arc surface is a tapered arc surface having a radius of curvature gradually decreasing from front to back, and the orthographic projection of the first cambered surface on the bottom surface of the first forming part 41 is located in the range of the bottom surface of the first forming part 41, the second forming part 42 is provided with a groove matched with the first forming part 41, the groove extends from the front end face of the second forming part 42 to the rear end face of the second forming part 42, the groove wall of the groove comprises a second cambered surface matched with the first cambered surface, a forming gap 43 is formed between the second cambered surface and the first cambered surface, the forming gap 43 is communicated with the folding gap 23, and the first forming part 41 is also provided with a wire transfer pore passage 44 for conveying the sheared nose bridge.

Based on the structure, when the nose bridge cutting device is used for producing disposable masks, the mask meltblown and non-woven fabrics coming out of the creasing mechanism pass through the feeding gap 13, one side edge of the mask meltblown and non-woven fabrics passes through the hemming gap 23 and reaches the forming gap 43, in the process, the edges of the mask meltblown and non-woven fabrics are quickly folded to the right position due to the gradual reduction of the bending radius of the first cambered surface, meanwhile, the long-strip nose bridge passes through the wire passing gap 26 under the driving of the traction wheel 24 to reach the main cutter wheel 25, and is then cut by the cutter blade 252 on the main cutter wheel 25 to form a plurality of short strips with equal length, the cut short nose bridge strips enter the wire conveying duct 44 of the guide die 4 under the pushing of the cutter blade 252 along with the rotation of the main cutter wheel 25 and fall in the hems of the mask meltblown and non-woven fabrics through the wire conveying duct 44, finally, the mask meltblown cloth and the non-woven fabric wrap the nose bridge strip, and the nose bridge strip enters the welding position of a subsequent welding mechanism to be welded, so that a mask sheet formed by welding is obtained. Based on the nose bridge strip cutting device, when the nose bridge strip cutting device is used for a disposable mask production line, the cutting of the nose bridge strip and the edge covering of mask melt-blown cloth and non-woven fabrics can be completed simultaneously, so that the operation space of a nose bridge strip assembling process is reduced, the production line is shortened, and the production efficiency of masks is improved; when the nose bridge strip cutting device is used for producing the KN95 mask, the nose bridge strip is fed into the wire passing gap 26, and the cut nose bridge strip is fed into other mechanisms through the wire passing pore passage 44 of the guide die 4 after being cut by the cutting blade 252. In this process, the feed gap 13, the folding gap 23, and the forming gap 43 of the guide mold 4 of the nose bridge cutting device do not work, but other parts such as the wire feeding hole of the cutting mechanism 2 and the guide mold 4 can still work to cut and convey the nose bridge. Therefore, this bridge of the nose strip cutting device can adapt to disposable gauze mask production line and KN95 gauze mask production line simultaneously, and its compatibility is good, and the practicality is high.

Optionally, as shown in fig. 2 and fig. 3, as a specific implementation of the nose bridge strip cutting device provided by the present invention, the base 22 is fixedly connected to the side of the supporting frame 21 through a connecting member, the connecting member includes a sliding piece 221 having a straight hole and a fastening bolt (not shown) disposed in the straight hole, the sliding piece 221 is fixedly connected to the base 22, and the fastening bolt passes through the straight hole and is fixedly connected to the supporting frame 21.

Based on above-mentioned structure, during the use, through unscrewing fastening bolt slip sheet 221 that slides, can drive base 22 and produce the displacement and then change base 22's inclination, so, base 22's position and inclination are controllable, and operating personnel can in time adjust base 22's height and inclination according to particular case, use very swiftly and convenient.

It should be noted that there is not only one connecting piece on the base 22, and the connecting piece can be provided with a plurality of, on this basis, through finely tuning different connecting pieces respectively during the use, can furthest increase the regulation precision, ensure to obtain better result of use. Particularly, in the embodiment of the utility model provides an in, the connecting piece is equipped with two sets ofly, and two sets of connecting pieces set up around the direction of delivery of nose bridge strip respectively to fix base 22 at the side of support frame 21.

Optionally, as shown in fig. 2 and fig. 3, as a specific implementation manner of the nose bridge strip cutting device provided by the present invention, a pressing cover 222 is disposed on the top of the base 22, the pressing cover 222 is disposed with a line passing hole through which the nose bridge strip can pass, and the pressing cover 222 is further disposed with an opening 223 through which the traction wheel 24 extends into the line passing hole. The traction wheel 24 extends into the wire passing duct through the opening 223 and contacts with the nose bridge strip to complete the conveying of the nose bridge strip.

Further, as the utility model provides a bridge of the nose strip cutting device's a concrete implementation way, the top of base 22 is equipped with the mounting groove, is equipped with the loose wheel 242 in the mounting groove, and the loose wheel 242 is located the below of traction wheel 24, promptly, forms the clearance that is used for carrying the bridge of the nose strip between traction wheel 24 and the loose wheel 242.

Based on the structure, the movable wheel 242 rotates under the driving of the traction wheel 24, and together with the traction wheel 24, the nose bridge strip is extruded and sent to the main cutter wheel 25 to be cut.

It should be noted that, a plurality of traction wheels 24 may be provided, and when a plurality of traction wheels 24 are provided on the support frame 21, a movable wheel 242 is correspondingly provided below each of the traction wheels 24, that is, the traction wheels 24 correspond to the movable wheels 242 one by one. Specifically, in the embodiment of the present invention, two traction wheels 24 are disposed on the supporting frame 21, and one movable wheel 242 is disposed below each of the two traction wheels 24, that is, two movable wheels 242 are also disposed, and the two movable wheels 242 correspond to the two traction wheels 24 above one to one.

Optionally, as shown in fig. 3 and 4, as a specific implementation manner of the nose bridge strip cutting device provided by the present invention, the top of the support frame 21 is provided with a first limit nut (not shown), a first screw 27 disposed along the height direction of the support frame 21 is disposed in the first limit nut, the bottom of the first screw 27 is connected with a first slider 271, and a traction axle 241 for setting the traction wheel 24 is disposed in the first slider 271.

Based on the above structure, the operator rotates the first screw 27 to make the first slider 271 slide up and down along the height direction of the support frame 21, so as to change the height of the traction wheel 24, and further change the distance between the traction wheel 24 and the base 22, so as to adapt to nose bridge strips with different thicknesses.

Further, as shown in fig. 3 and 4, a second limit nut (not shown) is further disposed at the top of the supporting frame 21, a second screw 28 disposed along the height direction of the supporting frame 21 penetrates through the second limit nut, a second slider 281 is connected to the bottom of the second screw 28, and a main arbor shaft 251 for disposing the main arbor wheel 25 penetrates through the second slider 281.

Similarly, based on the above structure, the operator rotates the second screw 28 to make the second slider 281 slide up and down along the height direction of the supporting frame 21, so as to change the height of the main cutter wheel 25, and further change the distance between the cutting blade 252 of the main cutter wheel 25 and the base 22, so as to adapt to nose bridge strips with different thicknesses.

Optionally, as shown in fig. 4 and fig. 5, as a specific implementation manner of the nose bridge strip cutting device provided by the present invention, the power mechanism 3 includes a servo motor 31 and a transmission assembly, the transmission assembly includes a first synchronizing wheel 32 disposed on the traction wheel shaft 241, a second synchronizing wheel 33 disposed on the main wheel shaft 251, and a third synchronizing wheel 34 disposed on an output shaft of the servo motor 31, the first synchronizing wheel 32, the second synchronizing wheel 33, and the third synchronizing wheel 34 are all disposed on the other side of the support frame 21, that is, on the side away from the traction wheel 24 and the main wheel 25, and meanwhile, the first synchronizing wheel 32, the second synchronizing wheel 33, and the third synchronizing wheel 34 are connected through a synchronous belt 35 in a transmission manner.

Based on the structure, when the tool is used, the servo motor 31 is started, the servo motor 31 drives the third synchronous wheel 34 to rotate, the third synchronous wheel 34 drives the first synchronous wheel 32 and the second synchronous wheel 33 to complete rotation through the synchronous belt 35, and then the traction wheel 24 and the main cutter wheel 25 rotate.

Further, the transmission assembly further comprises a correction wheel 36 arranged on the same side with the first synchronizing wheel 32 and the like, a wheel shaft of the correction wheel 36 is arranged on the support frame 21 and can slide along the height direction of the support frame 21, the correction wheel 36 is arranged between the first synchronizing wheel 32 and the second synchronizing wheel 33, the synchronous belt 35 also passes through the synchronous belt 35 during winding, and therefore when the positions of the traction wheel 24 and the main knife wheel 25 change due to work requirements, the synchronous belt 35 can be tensioned again by changing the height of the correction wheel 36, and therefore the synchronous belt 35 can be guaranteed to smoothly complete driving work.

It should be noted that, since there may be a plurality of traction wheels 24, in order to ensure the normal use of the whole cutting device, there may also be a plurality of first synchronizing wheels 32, and in this case, in order to ensure the synchronous tensioning effect, there may also be a plurality of correction wheels 36, and the plurality of correction wheels 36 are respectively disposed between the first synchronizing wheel 32 and the second synchronizing wheel 33 or between the two first synchronizing wheels 32, and tension the synchronous belt 35 to ensure the normal use of the cutting device. Specifically, as shown in fig. 4 and 5, in the embodiment of the present invention, there are two correction wheels 36, one correction wheel 36 is disposed between the first synchronous wheel 32 and the second synchronous wheel 33, and the other correction wheel 36 is disposed between the two first synchronous wheels 32.

Optionally, as a concrete implementation mode of the nose bridge strip cutting device that this practicality provided, direction mould 4 sets up for the horizontal plane downward sloping, so, the nose bridge strip that gets into in biography line pore 44 can be by oneself the landing under the effect of self gravity, and the design is very ingenious. Further, the wire duct 44 is provided as a hollow duct having an inlet and an outlet, and the aperture of the hollow duct is gradually reduced in the conveying direction of the nose bridge. Therefore, the nose bridge strip can smoothly enter the pore channel, and the nose bridge strip can accurately fall on the corresponding position. Of course, the wire passage 44 may be designed in other forms, such as a groove, a wire frame, etc., and in actual use, an operator may design and replace the wire passage according to specific situations in order to obtain better use effect.

Further, as shown in fig. 10, in another embodiment of the present invention, two shearing units 100 are provided on the frame 1, and the two shearing units 100 are symmetrically disposed on the frame 1. Based on this, the nose bridge strip cutting device that this embodiment provided can cooperate two gauze mask production lines simultaneously, accomplishes the work that needs two cycles to accomplish in the past in a duty cycle, is showing and has promoted work efficiency. Of course, in order to improve the production efficiency, more than two shearing units 100 may be disposed on the frame 1, and the arrangement is performed according to specific situations in actual production.

Finally, the embodiment of the utility model provides a still provide an intelligent gauze mask machine, it has adopted foretell bridge of the nose strip cutting device, consequently, this intelligent gauze mask machine has advantages such as production efficiency height, compatibility are good equally.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The nose bridge strip cutting device is characterized by comprising a rack and a shearing unit arranged on the rack;

the shearing unit includes:

the cutting mechanism is arranged on the bottom plate and comprises a support frame and a base arranged beside the support frame, a flanging gap communicated with the material conveying gap is formed between the support frame and the base, a traction wheel and a main cutter wheel are arranged on the support frame, the traction wheel is arranged above the base, a wire passing gap for conveying a nose bridge strip is formed between the traction wheel and the base, the main cutter wheel is arranged above the base and positioned on the downstream side of the traction wheel, and a cutting blade for cutting the nose bridge strip is arranged on the main cutter wheel;

the power mechanism is arranged on the bottom plate and used for driving the traction wheel and the main cutter wheel to rotate;

the guide die is arranged above the pressing plate and positioned on the downstream side of the main cutter wheel, the guide die comprises a first forming part and a second forming part arranged above the first forming part, the first forming part is provided with a first cambered surface connecting the top surface of the first forming part with one side surface, the first cambered surface is a conical cambered surface with the bending radius gradually reduced from front to back, the orthographic projection of the first cambered surface on the bottom surface of the first forming part is positioned in the range of the bottom surface of the first forming part, the second forming part is provided with a groove matched with the first forming part, the groove extends from the front end surface of the second forming part to the rear end surface of the second forming part, the groove wall of the groove comprises a second cambered surface matched with the first cambered surface, and a forming gap is formed between the second cambered surface and the first cambered surface, the forming gap is communicated with the flanging gap, and the first forming part is provided with a wire transferring pore canal used for conveying the sheared nose bridge strip.

2. The nose bridge strip cutting device according to claim 1, wherein the base is fixedly connected to the support frame through a connector, the connector includes a sliding piece having a slotted hole and a fastening bolt disposed in the slotted hole, the sliding piece is fixedly connected to the base, and the fastening bolt passes through the slotted hole and is fixedly connected to the support frame.

3. Nose bridge strip cutting device according to claim 2, wherein there are two sets of said connecting members, arranged one behind the other in the direction of transport of the nose bridge strip.

4. The nose bridge strip cutting device according to claim 1, wherein a gland is provided at the top of the base, the gland is provided with a wire passing duct through which the nose bridge strip can pass, and the gland is further provided with an opening through which the traction wheel can extend into the wire passing duct.

5. The nose bridge strip cutting device according to claim 1, wherein a mounting groove is formed in the top of the base, a movable wheel is arranged in the mounting groove, the movable wheel is located below the traction wheel, and the wire passing gap is formed between the traction wheel and the movable wheel.

6. The nose bridge strip cutting device according to claim 5, wherein there are more than two pulling wheels, and one movable wheel is provided below each pulling wheel, and the pulling wheels correspond to the movable wheels one by one.

7. The nose bridge strip cutting device according to claim 1, wherein a first limit nut is arranged at the top of the support frame, a first screw rod arranged along the height direction of the support frame penetrates through the first limit nut, a first sliding block is connected to the bottom of the first screw rod, and a traction wheel shaft for arranging the traction wheel penetrates through the first sliding block.

8. The nose bridge strip cutting device according to claim 7, wherein a second limit nut is further disposed on the top of the support frame, a second screw rod disposed along the height direction of the support frame penetrates through the second limit nut, a second slider is connected to the bottom of the second screw rod, and a main cutter wheel shaft for disposing the main cutter wheel penetrates through the second slider.

9. The nose bridge strip cutting device according to claim 8, wherein the power mechanism comprises a servo motor and a transmission assembly, the transmission assembly comprises a first synchronizing wheel arranged on the traction wheel shaft, a second synchronizing wheel arranged on the main cutter wheel shaft, and a third synchronizing wheel arranged on an output shaft of the servo motor, the first synchronizing wheel, the second synchronizing wheel, and the third synchronizing wheel are all located on one side of the support frame, which faces away from the traction wheel and the main cutter wheel, and the first synchronizing wheel, the second synchronizing wheel, and the third synchronizing wheel are connected through synchronous belt transmission.

10. The nose bridge strip cutting device according to claim 9, wherein the transmission assembly further comprises a correction wheel, an axle of the correction wheel is disposed on the support frame and can slide along a height direction of the support frame, and the correction wheel is disposed between the first synchronous wheel and the second synchronous wheel for adjusting and tensioning the synchronous belt.

11. Nose bridge strip cutting device according to claim 1, wherein the guide die is arranged inclined downwards with respect to a horizontal plane, the bore diameter of the string-passing duct gradually decreasing in the direction of transport of the nose bridge strip.

12. The bridge of nose strip cutting device of claim 1, wherein there are two of said shearing units, and two of said shearing units are symmetrically disposed on said frame.

13. An intelligent mask machine characterized by having a nose bridge strip cutting device according to any one of claims 1 to 12.