A flat mask production line

Abstract

The present invention discloses a flat mask production line, comprising a cloth roll feeding module, a pleat forming module, a nose line feeding module, a welding module, a slicing module and a power source; the cloth roll feeding module comprises a plurality of cloth rolls, which are rotatably connected to a frame; the pleat forming module comprises a mounting frame and a plurality of groups of pleat components arranged on the mounting frame; the welding module comprises a welding roller, a welding table and an ultrasonic device; the slicing module comprises a slicing roller and a feeding roller, the slicing roller is provided with a slicing knife extending in the axial direction, the blade of the slicing knife is tangent to the circumferential surface of the feeding roller; the welding roller and the slicing roller are connected to the power source through a first transmission mechanism. The present invention realizes the fully automated production of flat masks, and the nose line feeding precision is high, which is conducive to improving the processing quality of flat masks.

Description

Technical Field

[0001] The invention relates to a medical protective equipment production device, in particular to a flat mask production line. Background Art

[0002] Masks are important health protection materials, and wearing masks plays an important role in preventing virus infection. In the production process of flat masks, the specific processes include feeding and welding of the nose bridge line, mask edge welding, mask edge cutting, and mask slicing.

[0003] In the prior art, during the feeding and welding process of the bridge of the nose line, the bridge of the nose line generally starts from a material roll, is driven by a conveying device, and moves to the welding position of the bridge of the nose line on the mask fabric. Then, a cutter on the conveying device cuts off the bridge of the nose line, allowing the bridge of the nose line to fall at the position to be welded on the mask fabric. Then, under the pull of the mask fabric, the separate bridge of the nose line is driven to move forward at the same time. After processing at the welding station, the bridge of the nose line and the mask fabric are welded and fixed, thereby completing the feeding and welding process of the entire bridge of the nose line.

[0004] During the above-mentioned transportation process of the nose bridge line, when the nose bridge line is cut off, the active transportation power is completely lost, and the nose bridge line can only be driven to move synchronously during the movement of the mask fabric, which makes it easy for the nose bridge line and the mask fabric to move relative to each other; when the mask fabric moves to the welding station, the nose bridge line has shifted backwards a certain distance and cannot be aligned with the middle part of the welding position of the mask fabric, thereby reducing the final yield of the mask; when the user uses the mask, the nose bridge line of the mask cannot match the user's nose bridge or there is a certain offset, affecting the use effect.

[0005] In addition, during the production process, the power transmission mechanism of the equipment has certain transmission errors and is affected by other factors. After a period of continuous production and processing, the delivery progress of the nose bridge line will lag behind the delivery progress of the mask fabric, thereby affecting the position of the nose bridge line on the mask fabric. To solve the above problems, the traditional approach is to manually disassemble the power source and related transmission mechanisms, and then adjust the nose bridge line delivery mechanism and the corresponding transmission mechanism to achieve the consistency of the nose bridge line delivery progress with the mask fabric delivery progress. However, such an adjustment requires the power source and the related transmission mechanisms to be disassembled, which is cumbersome to operate and has low adjustment efficiency, which seriously affects the production progress. At the same time, frequent disassembly and assembly of related parts will have a certain impact on the service life of the production equipment. Summary of the invention

[0006] The invention aims to overcome the shortcomings of the prior art and provide a flat mask production line, which realizes the fully automated production of the flat masks and has high feeding accuracy of the nose bridge line, which is beneficial to improving the processing quality of the flat masks.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A flat mask production line, characterized in that it comprises a cloth roll feeding module, a pleat forming module, a nose line feeding module, a welding module, a slicing module and a power source, wherein the cloth roll feeding module, the pleat forming module, the nose line feeding module, the welding module and the slicing module are sequentially arranged on a frame along the moving direction of the mask fabric; the cloth roll feeding module comprises a plurality of cloth rolls, which are rotatably connected to the frame; the pleat forming module comprises a mounting frame and a plurality of groups of pleat assemblies arranged on the mounting frame, and the mask fabric is wound on the pleat assemblies along the width direction; the welding module comprises a welding roller, a welding table and an ultrasonic device, wherein the welding table is connected to the ultrasonic device, and a welding block corresponding to a welding point on a flat mask body is arranged on the circumferential surface of the welding roller; the slicing module comprises a slicing roller and a feeding roller, wherein a slicing knife extending in the axial direction is arranged on the slicing roller, and the blade of the slicing knife is arranged tangentially to the circumferential surface of the feeding roller; the welding roller and the slicing roller are connected to the power source through a first transmission mechanism; wherein,

[0009] The nose wire feeding module includes a nose wire reel, a plurality of conveying group wheels, a feeding wheel and a tangent group wheel; the plurality of conveying group wheels are arranged along the moving direction of the nose bridge line, and each conveying group wheel includes a supporting wheel and a wire feeding wheel arranged above the supporting wheel; along the moving direction of the nose bridge line, the tangent group wheel is arranged in front of the plurality of conveying group wheels, the tangent group wheel includes a receiving wheel and a cutting wheel, the cutting wheel is arranged above the receiving wheel, and a wire cutting knife is provided on the cutting wheel, the blade of the wire cutting knife extends along the radial direction of the cutting wheel, and the blade of the wire cutting knife is tangent to the outer cylindrical surface of the receiving wheel; the feeding wheel is arranged in front of the tangent group wheel, and the feeding wheel is located at the corresponding position of the supporting platform where the nose bridge line and the mask fabric are joined, and the feeding wheel is tangent to the supporting platform; the wire feeding wheel, the cutting wheel and the feeding wheel are connected to each other through a second transmission mechanism;

[0010] The nose wire feeding module also includes an adjustment component, which includes a first transmission member and a second transmission member, the first transmission member is passed through a rotating shaft connected to the cutting wheel and is separated from the rotating shaft, the second transmission member is sleeved on the rotating shaft and is locked with the rotating shaft, the second transmission member is fixedly connected to the first transmission member via a detachable connecting structure; the first transmission member is connected to the first transmission mechanism via a third transmission mechanism.

[0011] The working principle of the above-mentioned flat mask production line is:

[0012] During operation, driven by the power source, the welding roller, the slicing roller and the first transmission member are driven to rotate, so that the cloth roll and the nose wire roll rotate, and the mask cloth and the nose bridge wire are gradually released; wherein, after the mask cloth is released, it is processed by the pleat forming module to form a multi-layer pleated posture, and continues to be transported forward to the support table; after the nose bridge wire is released, it passes through multiple groups of conveying wheels and cutting wheels, and the continuous nose bridge wire is cut into a separate nose bridge wire under the action of the cutting wheel; at this time, during the rotation of the cutting wheel, the rear part of the separate nose bridge wire continues to be transported, so that the separate nose bridge wire continues to move forward a short distance, so that the front part of the separate nose bridge wire moves to the mask cloth on the support table, To achieve docking with the mask fabric; then, driven by the feeding wheel, the separate bridge of the nose line that is joined with the mask fabric is driven to move forward synchronously with the mask fabric to ensure that the separate bridge of the nose line can continue to move forward smoothly after being cut off, to avoid the lack of power of the bridge of the nose line and the deviation from the mask fabric; the mask fabric continues to move forward after being joined with the separate bridge of the nose line, and after being processed by the welding module, the front and back sides and the left and right sides of the mask fabric are welded and pressed together to complete the welding of the multi-layer mask fabric and the fixation of the position of the bridge of the nose line; finally, the welded mask fabric continues to move forward to the slicing module, and after being cut by the slicing roller, a separate flat mask body is formed to complete the entire processing process. When there is a difference in the delivery progress between the nose bridge line and the mask fabric, first suspend the operation of the equipment, loosen the detachable connection structure, remove the second transmission member from the first transmission member and the rotating shaft, and rotate the rotating shaft forward or backward to achieve manual adjustment of the wire feeding wheel, so as to achieve the purpose of moving the nose bridge line forward or backward, and then adjust the nose bridge line to a position corresponding to the mask fabric; then, reinstall the second transmission member, let the second transmission member be re-fixed and connected with the first transmission member and the rotating shaft, and continue normal nose bridge line delivery. Since the first transmission member and the rotating shaft are separated from each other, when the second transmission member is removed to adjust the rotating shaft, it will not affect the first transmission member, each transmission mechanism and the power source, thereby reducing the difficulty of adjustment, facilitating operation, and helping to improve the adjustment accuracy of the nose bridge line delivery progress.

[0013] In a preferred embodiment of the present invention, an intermediate guide is provided between the tangent group wheel and the feeding wheel; wherein, a threading groove is provided on the intermediate guide, one end of the threading groove corresponds to the cutting position between the cutting wheel and the receiving wheel, and the other end corresponds to the joining position of the mask fabric and the nose bridge line on the supporting platform; the front and rear sides of the intermediate guide are both arranged in an arc shape.

[0014] Preferably, the intermediate guide member includes a guide block and a protective block, and the front and rear sides of the guide block and the protective block are both arranged in an arc shape; wherein, the guide block is provided with an open groove, the bottom of the open groove is extended outward, and a notch is provided at the rear end of the open groove; the bottom of the protective block is connected with the outward extension of the bottom of the open groove, and the side of the protective block and the open groove constitute the threading groove.

[0015] According to a preferred embodiment of the present invention, a correction mechanism is provided behind the multiple conveying group wheels, and the correction mechanism includes multiple upper pressure wheels and multiple lower top wheels, the multiple upper pressure wheels and the multiple lower top wheels are arranged in a straight line, and the multiple upper pressure wheels and the multiple lower top wheels are staggered with each other; a correction channel is formed between the multiple upper pressure wheels and the multiple lower pressure wheels.

[0016] In a preferred embodiment of the present invention, the second transmission member is composed of an expansion sleeve assembly, which includes a connecting member and a collar; the collar is arranged on the inner wall of the first transmission member, and the conical sleeve of the connecting member is matched with the rotating shaft.

[0017] According to a preferred embodiment of the present invention, a flanging guide plate is provided on the support platform, and the flanging guide plate includes a main plate and two flanging plates respectively arranged on both sides of the main plate; wherein, the flanging plate includes a limiting portion and a guiding portion, the limiting portion is connected to the outer side of the guiding portion and extends downward, and the limiting portion is arranged in a circular arc shape; along the moving direction of the mask fabric, the inner edge of the guiding portion is gradually arranged close to the center line of the main plate, and the inner side surface of the limiting portion is gradually arranged close to the center line of the main plate; a pressing portion is provided at the front end of the guide portion, one end of the pressing portion is connected to the guiding portion, and the other end is extended in the direction of the center line.

[0018] Preferably, the rear end of the limiting portion is extended backward; along the moving direction of the mask fabric, the top surface of the limiting portion located behind the guide portion is inclined upward.

[0019] In a preferred embodiment of the present invention, the cloth roll loading module also includes a material discharge control mechanism, which includes a pressing plate arranged above the cloth roll for pressing the surface of the cloth roll and a hammer arranged at the lower end of the pressing plate; the upper end of the pressing plate is connected to the frame, and the lower end is connected to the hammer; under the action of the hammer's own gravity, the pressing plate is pressed against the surface of the cloth roll.

[0020] In a preferred embodiment of the present invention, the cloth roll feeding module also includes a feeding guide mechanism, which includes a limiting conveying member, on which is provided an arc-shaped conveying surface for supporting the mask cloth; positioning portions are provided on both sides of the arc-shaped conveying surface along the conveying direction; and a limiting channel for conveying the mask cloth is formed between the two positioning portions.

[0021] In a preferred embodiment of the present invention, the pleat assembly of the pleat forming module comprises a first pleat piece and a second pleat piece; wherein, along the conveying direction of the mask fabric, an open feed end for avoiding the fabric from being conveyed downward is formed between the head ends of the first pleat piece and the second pleat piece, a molding end for extruding the fabric into shape is formed between the ends of the first pleat piece and the second pleat piece, and a folding end for guiding the fabric to be folded during the forward conveying of the fabric is between the open feed end and the molding end; in the molding end, the end parts of the first pleat piece and the second pleat piece are arranged relatively to each other.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention realizes the fully automated production of flat masks, and the feeding accuracy of the nose bridge line is high, which is beneficial to improving the processing quality of flat masks.

[0024] 2. By setting the feeding wheel, the separate bridge of the nose line can obtain sufficient power to move forward after being cut off, avoiding relative movement with the mask fabric, which is beneficial to improve the position accuracy of the bridge of the nose line on the mask fabric, thereby improving the production quality of the mask.

[0025] 3. The present invention facilitates the adjustment of the delivery progress of the nose bridge line, thereby ensuring the synchronous movement of the nose bridge line and the mask fabric, and further improving the position accuracy of the nose bridge line and the mask fabric; since the first transmission member and the rotating shaft in the present invention are separated from each other, when the second transmission member is disassembled to adjust the rotating shaft, it will not affect the first transmission member, the transmission mechanism and the power source, and there is no need to disassemble other parts, thereby reducing the difficulty of adjustment, facilitating operation, and helping to improve the adjustment accuracy of the nose bridge line delivery progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1-Figure 4 It is a structural schematic diagram of one specific embodiment of the flat mask production line of the present invention, wherein FIG1 is a main view, Figure 2 is a side view, Figure 3 is a top view, Figure 4 It is a three-dimensional diagram (the cloth roll loading module is not shown).

[0027] Figure 5-Figure 10 This is a schematic diagram of the nose wire feeding module, where: Figure 5 For the main view, Figure 6 is the rear view, Figure 7 For a stereogram, Figure 8 A stereogram from the second perspective. Fig. 9 This is the exploded view of the intermediate guide. Fig.10 It is a stereoscopic image from a third perspective.

[0028] Fig.11 It is the rear view of multiple sets of conveyor wheels.

[0029] Fig.12 A three-dimensional view of the cutting wheel assembly and adjustment components.

[0030] Fig.13 Exploded view of the cutting wheel assembly and adjustment components.

[0031] Figure 14-18 It is a schematic diagram of the structure of the flanging guide plate, where: Fig.14 For the main view, Fig.15 is a side view, Fig.16 is a top view, Fig.17 For bottom view, Fig.18 It is a three-dimensional picture.

[0032] Figure 19-20 It is a structural diagram of the material discharge control mechanism, in which: Fig.19 For a stereogram, Fig. 20 A stereogram from another viewing direction.

[0033] Fig.21 It is a three-dimensional structural schematic diagram of the material discharge control mechanism when it is in working state.

[0034] Fig. 22 for Fig.21 A partial enlarged view of point I in the middle.

[0035] Fig.23 It is a schematic diagram of the three-dimensional structure of the fixing block and the clamping mechanism.

[0036] Fig.24 The hammer body is a schematic diagram of a cylindrical hammer body.

[0037] Fig.25 It is a schematic diagram of the three-dimensional structure of the feeding guide mechanism.

[0038] Fig.26 This is a top view of the feeding guide mechanism when it is working, where a represents the mask fabric.

[0039] Figure 27-Figure 28 It is a side view of the application of the feeding guide mechanism in two different feeding situations, wherein a represents the mask fabric.

[0040] Figure 29-Figure 30 Schematic diagram of the three-dimensional structure of the pleat forming module from two different perspectives.

[0041] Fig.31 A top view of the pleat forming module.

[0042] Fig.32 It is a side view of the pleat assembly in the present invention.

[0043] Fig.33 It is a schematic diagram of the three-dimensional structure of the pleat assembly in the present invention.

[0044] Fig.34 for Fig.32 A cross-sectional view of the formed end of the pleat assembly in FIG. 1 , wherein a represents the mask fabric.

[0045] Fig.35 for Fig.29 Schematic diagram of the local structure in. DETAILED DESCRIPTION

[0046] The present invention is further described below in conjunction with examples and drawings, but the embodiments of the present invention are not limited thereto.

[0047] Example 1

[0048] The flat mask production line of the present embodiment comprises a cloth roll feeding module, a wrinkle forming module A, a nose line feeding module B, a welding module C, a slicing module D and a power source. Along the moving direction of the mask cloth, the cloth roll feeding module, the wrinkle forming module A, the nose line feeding module B, the welding module C and the slicing module D are sequentially arranged on a frame; the cloth roll feeding module comprises a plurality of cloth rolls, which are rotatably connected to the frame; the wrinkle forming module A comprises a mounting frame and a plurality of groups of wrinkle assemblies arranged on the mounting frame, and the mask cloth is wound on the wrinkle assemblies along the width direction; the welding module C comprises a welding roller, a welding table and an ultrasonic device, the welding table is connected to the ultrasonic device, and a welding block corresponding to a welding point on a flat mask body is arranged on the circumferential surface of the welding roller; the slicing module D comprises a slicing roller and a feeding roller, the slicing roller is provided with a slicing knife extending in the axial direction, and the blade of the slicing knife is arranged tangentially to the circumferential surface of the feeding roller; the welding roller and the slicing roller are connected to the power source through a first transmission mechanism. Among them, the cloth roll feeding module, welding module C, slicing module D and power source of this embodiment can all refer to the flat mask production equipment in the prior art.

[0049] The nose wire loading module B described in this embodiment includes a nose wire reel, a plurality of conveying wheel groups, a feeding wheel 1 and a tangent wheel group; the plurality of conveying wheel groups are arranged along the moving direction of the nose bridge line, and each conveying wheel group includes a supporting wheel 11 and a wire feeding wheel 9 arranged above the supporting wheel 11; along the moving direction of the nose bridge line, the tangent wheel group is arranged in front of the plurality of conveying wheel groups, the tangent wheel group includes a receiving wheel 10 and a cutting wheel 7, the cutting wheel 7 is arranged above the receiving wheel 10, and a wire cutting knife 8 is provided on the cutting wheel 7, the blade of the wire cutting knife 8 extends along the radial direction of the cutting wheel, and the blade of the wire cutting knife 8 is tangent to the outer cylindrical surface of the receiving wheel 10; the feeding wheel 1 is arranged in front of the tangent wheel group, and the feeding wheel is located at the corresponding position of the supporting platform 2 at the junction of the nose bridge line and the mask fabric, and the feeding wheel 1 is tangent to the supporting platform 2; the wire feeding wheel 9, the cutting wheel 7 and the feeding wheel 1 are connected to each other through a second transmission mechanism. The nose wire feeding module B also includes an adjustment component 7a, which includes a first transmission member 10a and a second transmission member 11a. The first transmission member 10a is passed through a rotating shaft 12a connected to the cutting wheel 7 and is separated from the rotating shaft 12a. The second transmission member 11a is sleeved on the rotating shaft 12a and is locked with the rotating shaft 12a. The second transmission member 11a is fixedly connected to the first transmission member 10a via a detachable connection structure; the first transmission member 10a is connected to the first transmission mechanism via a third transmission mechanism.

[0050] See also Figure 5 , Figure 7 and Figure 8 , an intermediate guide 30 is provided between the cutting group wheel and the feeding wheel; wherein, a threading groove is provided on the intermediate guide 30, one end of which corresponds to the cutting position between the cutting wheel 7 and the receiving wheel 10, and the other end corresponds to the joint position of the mask fabric and the bridge of the nose on the support platform 2; the front and rear sides of the intermediate guide 30 are both arranged in an arc shape. Through the arrangement of the intermediate guide 30, the individual bridge of the nose after cutting can be supported in the threading groove, which facilitates the transition of the individual bridge of the nose to the mask fabric on the support platform 2, and prevents the individual bridge of the nose from falling; in addition, since the front and rear sides of the intermediate guide 30 are both arranged in an arc shape, the cutting wheel 7 and the feeding wheel 1 on both sides of the intermediate guide 30 can be arranged closer, so that the bridge of the nose after cutting can fully obtain power to move forward, and the structure of the entire device is more compact.

[0051] See also Fig. 9, the intermediate guide 30 includes a guide block 23 and a protective block 24, the front and rear sides of the guide block 23 and the protective block 24 are both arranged in an arc shape; wherein, an opening slot 25 is provided on the guide block 23, the bottom of the opening slot 25 is extended outward, and a notch 26 is provided at the rear end of the opening slot 25; the bottom of the protective block 24 is butted against the outward extension of the bottom of the opening slot 25, and the side of the protective block 24 and the opening slot 25 constitute the threading slot. In this embodiment, the guide block 23 and the protective block 24 are locked and fixed together by a bolt connection structure 22. By setting such a split intermediate guide 30, the processing and manufacturing of the intermediate guide 30 is facilitated, the processing cost is reduced, and it is easy to install; in addition, a notch 26 is provided at the opening slot 25 to facilitate the nose bridge line that has just been cut to enter the threading slot.

[0052] See also Figure 5-Figure 8 The feeding wheel 1 also includes a first height adjustment mechanism 21, which includes a mounting frame 4 and an adaption assembly. The mounting frame 4 is provided with an adjustment cavity 5, and the feeding wheel 1 is rotatably connected to the bottom of the adjustment cavity 5 through a connecting shaft 20; wherein the adaption assembly includes an adjustment block 3 and an elastic element 16, the adjustment block 3 is arranged in the adjustment cavity 5, one end of the elastic element 16 abuts against the bottom of the adjustment block 3, and the other end abuts against the connecting shaft 20, and the top of the adjustment block 3 is connected to the top of the adjustment cavity 5 through a screw nut assembly 6. In this way, the height of the adjustment block 3 can be adjusted by rotating the screw nut assembly 6, thereby changing the compression degree of the elastic element 16, thereby changing the height and pressing force of the connecting shaft 20 and the feeding wheel 1 connected to the connecting shaft 20, so as to adapt to the transportation of the nose bridge line, and the pressing degree of the nose bridge line during the transportation process can be changed according to the actual production situation, and the transportation of the nose bridge line can be completed with the best pressing force. The elastic element 16 in this embodiment is composed of a spring.

[0053] See also Figure 7 and Figure 8 , a gear groove is provided on the circumferential surface of the feeding wheel 1. In this way, the friction of the feeding wheel 1 on the nose bridge line can be strengthened, thereby effectively providing power to the nose bridge line, ensuring that the nose bridge line can be smoothly transported forward.

[0054] See also Figure 7 and Figure 8 The circumferential surface of the cutting wheel 7 is provided with an avoidance groove 27, and the radial position of the avoidance groove 27 is matched with the conveying path of the nose bridge line. The setting of the avoidance groove 27 is conducive to conveying the continuous nose bridge line forward before cutting, and smoothly passes through the cutting wheel 7 to the support platform 2 to dock with the mask fabric.

[0055] See also Figure 5 , Figure 7and Figure 8 The cutting wheel 7 is provided with a knife mounting groove, which extends in the radial direction and passes through the center of the cutting wheel 7; the cutting wheel 7 is provided with a plurality of knife mounting holes 26, which are connected to the knife mounting groove. The thread cutter 8 is installed in the knife mounting groove, and a screw or other locking member is provided in the knife mounting hole 26 to lock the thread cutter 8 in the knife mounting groove, thereby realizing the installation and fixation of the thread cutter 8; and the radial extension length of the thread cutter 8 can be adjusted according to the production situation to ensure that the continuous nose bridge line is smoothly cut.

[0056] See also Figure 5 , Figure 7 and Figure 8 The supporting wheel 11 of the conveying wheel group is provided with a limiting groove 28 on its circumferential surface, the thickness of the action circumferential surface of the wire feeding wheel 9 is matched with the limiting groove 28, and a gear groove is provided on the action circumferential surface of the wire feeding wheel 9. By providing such a supporting wheel 11, the nose bridge wire is always limited in the limiting groove 28 during the conveying process, avoiding the continuous nose bridge wire from deviating during the long-distance conveying process, thereby ensuring that the wire feeding wheel 9 can always press the nose bridge wire in the limiting groove 28 of the supporting wheel 11, thereby realizing the driving and conveying of the nose bridge wire.

[0057] See also Figure 6-Figure 8 The wire feeding wheels 9 of the plurality of conveying wheel groups are all rotatably connected to the frame through a power shaft, each of the power shafts is provided with a transmission gear 18, and the transmission gears 18 on each power shaft are matched and connected through an intermediate gear 19; the intermediate gear 19 and the transmission gear 18 constitute the second transmission mechanism. In this embodiment, the rotation shaft 12a of the cutting wheel 7 is also provided with a transmission gear 18, and is also connected to other transmission gears 18 through the intermediate gear 19.

[0058] See also Figure 5 , Figure 7 and Figure 8 A wire hanging member 29 is provided between the plurality of conveying wheels, between the conveying wheels and the tangent wheels, and behind the conveying wheels. The lower end of the wire hanging member is provided with a threading hole, and the threading hole is matched with the conveying path of the nose bridge wire. The setting of the wire hanging member 29 realizes the suspension support of the nose bridge wire, prevents the nose bridge wire from falling between the supporting points, and facilitates the conveying of the nose bridge wire in a straight posture, thereby improving the conveying accuracy of the nose bridge wire.

[0059] See also Figure 5-Figure 8A correction mechanism 12 is arranged behind the plurality of conveying wheels, and the correction mechanism 12 includes a plurality of upper pressing wheels 14 and a plurality of lower top wheels 13. The plurality of upper pressing wheels 14 and the plurality of lower top wheels 13 are arranged in a straight line, and the plurality of upper pressing wheels 14 and the plurality of lower top wheels 13 are arranged staggered with each other; a correction channel is formed between the plurality of upper pressing wheels 14 and the plurality of lower pressing wheels. Through the setting of the correction mechanism 12, the nose bridge line coming out of the roll passes through the correction channel and enters the plurality of conveying wheels for conveying in a straight manner. Specifically, the upper pressing wheel 14 can press down the nose bridge line that is arched upward, and the lower top wheel 13 can push up the nose bridge line that is bent downward, thereby correcting the continuous nose bridge line so that the conveying wheels can convey it better. In this embodiment, protective rings 28 are provided on both end surfaces of the upper pressure wheel 14 at the front and rear ends. The diameter of the protective ring 28 is larger than that of the upper pressure wheel 14, thereby limiting the nose bridge line and ensuring that the nose bridge line can move between the two protective rings 28 to avoid deviation and falling off.

[0060] See also Figure 5-Figure 8 The correction mechanism 12 also includes a plurality of second height adjustment mechanisms 15, and the plurality of second height adjustment mechanisms 15 are arranged one-to-one corresponding to the upper pressing wheel 14 located in the middle. The second height adjustment mechanism 15 in this embodiment can refer to the first height adjustment mechanism 21.

[0061] See also Figure 10-13 , the second transmission member 11a is composed of an expansion sleeve assembly, which includes a connecting member 16a and a collar; the collar is arranged on the inner wall of the first transmission member 10a, and the conical sleeve 17a of the connecting member 16a is matched with the rotating shaft 12a. The connection between the first transmission member 10a and the rotating shaft 12a is achieved through the expansion sleeve assembly, and the purpose of power transmission is achieved; the expansion sleeve assembly is a standard part, which is easy to purchase, install and disassemble, and has good connection stability. The expansion sleeve assembly in this embodiment can refer to the expansion sleeve standard parts in the prior art. The detachable connection structure in this embodiment is composed of a locking screw on the expansion sleeve assembly.

[0062] See also Figure 12-13 A washer 18a is provided between the connecting member 16a of the expansion sleeve assembly and the first transmission member 10a, so as to further improve the tightness between the connecting member 16a and the first transmission member 10a, and to improve the connection stability between the two.

[0063] See also Fig.12 and Fig.13, the first transmission member 10a is provided with a connecting ring 15a extending in the axial direction, and the collar of the expansion sleeve assembly is arranged in the connecting ring 15a. The setting of the connecting ring 15a facilitates the collar to be arranged on the first transmission member 10a, so as to fix the collar in position; in addition, the setting of the connecting ring 15a also makes the first transmission member 10a and the second transmission member 11a separated by a certain distance, so as to prevent the second transmission member 11a from being too close to the first transmission member 10a and the transmission mechanism connected to the first transmission member 10a, thereby ensuring that there is enough space when disassembling and installing the second transmission member 11a, which is convenient for operation and adjustment. In addition, the connecting sleeve of the expansion sleeve assembly can be directly composed of the connecting ring 15a. In this embodiment, one side of the rotating shaft 12a is plane-processed, and the plane position of the rotating shaft 12a corresponds to the deformation groove 19a on the connecting member 16a, so that when the connecting member 16a is installed, the conical sleeve 17a on the connecting member 16a is convenient for deformation, which is conducive to locking on the rotating shaft 12a to achieve connection.

[0064] See also Figure 14-18 , the support platform 2 is provided with a flanging guide plate, which includes a main plate 1b and two flanging plates 5b respectively arranged on both sides of the main plate 1b; wherein the flanging plate 5b includes a limiting portion 3b and a guide portion 2b, the limiting portion 3b is connected to the outer side of the guide portion 2b and extends downward, and the limiting portion 3b is arranged in a concave arc shape. Along the moving direction of the mask fabric, the inner edge of the guide portion 2b gradually approaches the center line of the main plate 1b (the width of the guide portion 2b gradually increases); the inner side surface of the limiting portion 3b gradually approaches the center line of the main plate, and the front end distance of the limiting portion 3b of the two flanging plates 5b is set corresponding to the width of the mask fabric after flanging. The front end of the guide portion 2b is provided with a pressing portion 7b, one end of which is connected to the guide portion 2b, and the other end extends in the direction of the center line. In this embodiment, the guide portion 2b and the pressing portion 7b are both arranged horizontally, and the distance between the guide portion 2b and the pressing portion 7b remains unchanged. In addition, the distance between the guide portion 2b and the pressing portion 7b can be arranged to gradually decrease along the moving direction of the mask fabric, so that the pressing force on the mask fabric gradually increases, thereby improving the quality of the flanging.

[0065] See also Fig.14 , Fig.15 , Fig.16 and Fig.18, the rear end of the limiter 3b is extended backward; along the moving direction of the mask fabric, the top surface of the limiter 3 located behind the guide 2b is tilted upward, and in this embodiment, the rear end of the limiter 3b is rounded. In this way, the inlet position of the entire guide plate becomes smoother, and the rear end of the tilted limiter 3b can smoothly transition with the mask fabric and smoothly enter between the two flange plates 5b; in addition, the rear end of the limiter 3b is set in this way, so that the inlet width constraint of the entire guide plate becomes smaller, and the mask fabric can be offset left and right and up and down within a certain range, so that the adaptability of the entire guide plate is better.

[0066] See also Fig.16 and Fig.18 A fillet is provided between the pressing portion 7b and the inner edge of the guide portion 2b; the front and rear ends of the pressing portion 7b are both arranged in an arc shape. By providing such a pressing portion 7b, the mask fabric passes more smoothly, avoiding scratching or damaging the mask fabric, which is conducive to improving the smoothness of the mask fabric movement.

[0067] See also Figure 14-18 , and further includes a guide plate 6b, one end of which is connected to the rear end of the main plate 1b, and the other end is arranged in an arc shape and tilted downward. The setting of the guide plate 6b facilitates the feeding of the mask cloth, especially when the height of the mask cloth is low during feeding, so that the mask cloth can smoothly enter the main plate 1b for flanging.

[0068] See also Figure 14-18 The bottom of the main plate 1b is provided with a mounting connector, which includes two mounting plates 4b arranged in opposite directions; the mounting plates 4b are arranged in a U-shape, and the opening position of the mounting plates 4b extends to the outside of the main plate 1b. The installation connector is arranged to facilitate the installation and fixation of the entire guide plate, and the locking position of the opening groove on the mounting plate 4b can be adjusted, thereby realizing the position adjustment of the main plate 1.

[0069] See also Fig.18 The mounting connector also includes a support pad 8b, which is arranged between the two mounting plates 4b, and the thickness of the support pad 8b is the same as that of the mounting plates 4b. By setting the support pad 8b, the bottom area of ​​the entire mounting connector is increased, so that the main plate 1b after installation is more stable. The mounting connector of this embodiment is fixedly connected to the main plate 1b by welding.

[0070] See also Figure 19-21The cloth roll feeding module also includes a discharge control mechanism, which includes an arc-shaped pressing sheet 2c arranged above the cloth roll 1c for pressing the surface of the cloth roll 1c and a hammer 3c arranged at the lower end of the pressing sheet 2c; the upper end of the pressing sheet 2c is connected to the frame of the mask machine, and the lower end is connected to the hammer 3c; under the action of the self-gravity of the hammer 3c, the pressing sheet 2c is pressed against the surface of the cloth roll 1c. The pressing sheet 2c is set to an arc shape, which has the advantage that it can increase the contact area between the pressing sheet 2c and the cloth roll 1c, thereby increasing the friction between the pressing sheet 2c and the cloth roll 1c, thereby improving the damping effect, and more effectively suppressing the force generated by the inertia of the cloth roll 1c.

[0071] See also Figure 19-21 A connecting structure is provided between the pressing sheet 2c and the frame of the mask machine, and the connecting structure includes a bracket 4c arranged on the frame, and a mounting rod 5c arranged between the bracket 4c and the pressing sheet 2c; wherein one end of the mounting rod 5c is fixedly connected to the bracket 4c, and the other end is connected to the upper end of the pressing sheet 2c. By providing the connecting structure, the pressing sheet 2c can be better installed on the frame of the mask machine.

[0072] See also Figure 19-Figure 23 The connection structure further includes a fixing block 6c disposed between the mounting rod 5c and the bracket 4c, the fixing block 6c is fixedly connected to the bracket 4c, and a clamping mechanism 7c for clamping the mounting rod 5c is disposed on the fixing block 6c, wherein the clamping mechanism 7c includes a mounting hole 7-1c disposed on the fixing block 6c and cooperating with the mounting rod 5c, a clamping groove 7-2c disposed on one side of the mounting hole 7-1c and opening outward, and a clamping bolt 7-3c for adjusting the distance of the clamping groove 7-2c. With the above structure, the distance adjustment of the clamping groove 7-2c is achieved by the clamping bolt 7-3c. When the distance of the clamping groove 7-2c is reduced, the mounting hole 7-1c will clamp the mounting rod 5c to achieve the purpose of fixing the mounting rod 5c. When the distance of the clamping groove 7-2c is increased, the mounting hole 7-1c will loosen the mounting rod 5c to achieve the purpose of adjusting or removing the mounting rod 5c.

[0073] In this embodiment, the pressing sheet 2c and the hammer body 3c are connected by a rope (not shown in the figure).

[0074] Furthermore, the lower end of the pressing plate 2c and the lower end of the hammer body 3c are both provided with a through hole 8c for fixing the rope. By providing the through hole 8c, one end of the rope is tied to the through hole 8c at the lower end of the pressing plate 2c, and the other end is tied to the through hole 8c at the lower end of the hammer body 3c. Under the action of the self-weight of the hammer body 3c, the rope is straightened to press the pressing plate 2c against the surface of the fabric roll 1c.

[0075] See also Figure 19-22 A bending portion 2-1c is provided at the upper end of the pressing sheet 2c. The bending portion 2-1c is bent along the mounting rod 5c and sleeved on the mounting rod 5c.

[0076] See also Figure 19-22 At the end of the bending portion 2-1c, two clamping blocks 9c for clamping the bending portion 2-1c and the pressing sheet 2c and a clamping bolt 10c for driving the two clamping blocks 9c for clamping are provided. The above structure can effectively prevent the bending portion 2-1c from being deformed, thereby preventing the bending portion 2-1c from being separated and loosened from the mounting rod 5c.

[0077] See also Figure 19-21 The bracket 4c is fixedly connected to the frame by two oppositely arranged "L"-shaped pieces 11c. The "L"-shaped piece 11c connection can effectively ensure the stability between the bracket 4c and the frame of the mask machine.

[0078] See also Fig.24 The hammer body 3c can also be set as a cylindrical hammer body 3c, and the cylindrical hammer body 3c is fixedly connected to the lower end of the pressing sheet 2c. With the above structure, the pressing sheet 2c can also be deformed and pressed against the surface of the cloth roll 1c.

[0079] During operation, under the action of the self-gravity of the hammer body 3c, the pressing plate 2c is deformed and pressed against the surface of the cloth roll 1c. When the traction mechanism conveys the cloth forward, the cloth roll 1c will speed up the material discharge speed under the action of its own inertia. Since the pressing plate 2c is pressed against the surface of the cloth roll 1c, the cloth roll 1c needs to overcome the friction of the pressing plate 2c to rotate. The friction can offset the force generated by the inertia of the cloth roll 1c, so that the cloth roll 1c can be conveyed smoothly. When the traction mechanism stops the cloth roll 1c from conveying, the friction also offsets the force generated by the inertia of the cloth roll 1c, so that the cloth roll 1c stops moving, preventing excess cloth from being conveyed forward, causing the cloth to wrinkle and affecting the production quality. Since the pressing plate 2c is always pressed against the surface of the cloth roll 1 during the conveying of the cloth, the pressing plate 2c can scrape the surface of the cloth to be smoother and smoother, which can effectively improve the production quality of the mask.

[0080] See also Figure 25-26 The feeding guide mechanism in the mask production equipment in this embodiment includes a limiting conveying member 1d, on which is provided an arc-shaped conveying surface 1-1d for holding mask fabrics; along the conveying direction, positioning parts 1-2d are provided on both sides of the arc-shaped conveying surface 1-1d; and a limiting channel for conveying mask fabrics is formed between the two positioning parts 1-2d.

[0081] See also Figure 25-26The position-limiting conveying member 1d is connected to the mounting frame 2d through a transverse adjustment mechanism, and the mounting frame 2d is fixedly arranged on the frame of the mask production equipment; the transverse adjustment mechanism includes an adjustment frame and a transverse locking member 3d for locking the adjustment frame, and the position-limiting conveying member 1 is fixedly arranged on the adjustment frame, and the adjustment frame is connected to the mounting frame 2d through a linear sliding structure. In the above structure, the adjustment frame moves transversely relative to the mounting frame 2d, so as to adjust the position of the position-limiting conveying member 1d, thereby adapting to different application occasions.

[0082] See also Figure 25-28 The adjustment frame includes a translation rod 4d and a rotating mounting member 5d. The translation rod 4d is connected to the mounting frame 2d through the linear sliding structure; the rotating mounting member 5d is rotatably connected to the translation rod 4d, and a rotating locking member 6d is provided on the rotating mounting member 5d. Through the above structure, the rotating mounting member 5d can rotate relative to the translation rod 4d to adjust the posture of the limit conveying member 1d, so that the arc-shaped conveying surface 1-1d supports the mask fabric in the best posture, ensures the smoothness of the mask fabric conveying, reduces the conveying resistance, and is suitable for different application occasions, such as Figure 26-Figure 27 In particular, when the feeding guide mechanism is equipped in different types of mask production equipment, the limit conveying member 1d can be rotated according to actual needs to obtain the desired assembly effect, and the interchangeability is good.

[0083] Furthermore, the transverse locking member 3d and the rotating locking member 6d are both manual locking bolts, and the two manual locking bolts pass through the mounting frame 2d and the rotating mounting member 5d respectively and are pressed against the translation rod 4d. Of course, the transverse locking member 3d can also be other locking structures such as a plug-in structure.

[0084] See also Figure 25-26 , the two positioning parts 1-2d first extend upward from the arc-shaped conveying surface 1-1d, and then extend in the direction close to each other. In this way, the two positioning parts 1-2d on the arc-shaped conveying surface 1-1d can not only limit the mask fabric on a fixed conveying path, but also limit the contact area between the mask fabric and the arc-shaped conveying surface 1-1d, so that the fitting surface between the limiting conveying member 1d and the mask fabric in each posture remains unchanged.

[0085] See also Fig.25 A detection port 1-3d is provided on the arc-shaped conveying surface 1-1d, and a detection module for detecting the conveying condition of the mask fabric is provided below the detection port 1-3d. For the specific detection module, reference can be made to the detector involved in the corresponding mask feeding in the prior art.

[0086] See also Figure 25-26The working principle of the feeding guide mechanism in this embodiment is: when working, driven by the traction power, the mask fabric is conveyed from the feeding roller and conveyed in the direction of the first processing station. When the mask fabric moves to the limiting conveying member 1d, the arc-shaped conveying surface 1-1d on the limiting conveying member 1d supports the mask fabric. Among them, since positioning parts 1-2d are provided on both sides of the arc-shaped conveying surface 1-1d, a limiting channel for conveying the mask fabric is formed between the two positioning parts 1-2d, so the mask fabric is conveyed forward in the limiting channel, thereby realizing the limitation of the conveying path of the mask fabric. Furthermore, by pre-adjusting the position of the limiting conveying member 1, the mask fabric can be accurately conveyed to the corresponding processing station.

[0087] See also Figure 29-Figure 33 The pleat assembly of the pleat forming module A in this embodiment includes a first pleat member 1e and a second pleat member 2e, wherein the head end of the first pleat member 1e is located above the head end of the second pleat member 2e, and the tail end of the first pleat member 1e is located below the tail end of the second pleat member 2e. In the conveying direction of the mask fabric, an open feed end 3e for avoiding the downward conveying of the mask fabric is formed between the head ends of the first pleat member 1e and the second pleat member 2e, and a forming end 4e for extruding the mask fabric is formed between the tail ends of the first pleat member 1e and the second pleat member 2e. A folding end 5e for guiding and folding the mask fabric during the forward conveying of the mask fabric is located between the open feed end 3e and the forming end 4e; in the forming end 4e, the tail ends of the first pleat member 1e and the second pleat member 2e are arranged relative to each other.

[0088] Specifically, the pleat components in this embodiment are provided with three groups, and are evenly arranged along the direction perpendicular to the conveying direction of the mask fabric. Of course, the pleat components can be two groups, four groups, or even more.

[0089] See also Figure 29-Figure 33 The mounting frame includes a first mounting frame 6e and a second mounting frame 7e; the head end of the first pleated member 1e is connected to the first mounting frame 6e through an upper fixing structure, and the head end of the second pleated member 2e is connected to the first mounting frame 6e through a lower fixing structure. Specifically, the upper fixing structure and the lower fixing structure can be bolted or other structures capable of achieving fixed connection.

[0090] See also Fig.35 The end of the first pleated member 1e is connected to the second mounting frame 7e through an upper adjusting structure, and the end of the second pleated member 2e is connected to the second mounting frame 7e through a lower adjusting structure.

[0091] Further, the upper adjustment structure and the lower adjustment structure both include a transverse adjustment structure and a vertical adjustment structure, and the adjustment direction of the transverse adjustment structure is perpendicular to the conveying direction of the mask fabric; the transverse adjustment structure includes a transverse fixing rod 8e and a transverse adjustment block 9e, and the transverse adjustment block 9e is arranged on the transverse fixing rod 8e through a transverse sliding structure, and the end of the first pleated member 1e is connected to the transverse adjustment block 9e; one end of the transverse fixing rod 8e is fixed on the second mounting frame 7e, and the other end is provided with a transverse adjustment thread, and the transverse adjustment thread is provided with a transverse adjustment nut 10e, and the transverse adjustment block 9e is located between the transverse adjustment nut 10e and the second mounting frame 7e; the transverse fixing rod 8e is also sleeved with a transverse adjustment spring 11e, one end of which is pressed against the second mounting frame 7e, and the other end is pressed against the transverse adjustment nut 10e. Through the above structure, the horizontal position of the end of the first pleated member 1e can be adjusted according to actual needs, so as to obtain a mask with different pleated effects.

[0092] See also Fig.35 The vertical adjustment structure includes a vertical fixing rod 12e, which is connected to the horizontal adjustment block 9e through a vertical sliding structure. One end of the vertical fixing rod 12e is fixedly connected to the end of the first pleated member 1e, and the other end is provided with a vertical adjustment thread, which is provided with a vertical adjustment nut 13e. The horizontal adjustment block 9e is located between the vertical adjustment nut 13e and the end of the first pleated member 1e. The vertical fixing rod 12e is also sleeved with a vertical adjustment spring 14e, one end of which is pressed against the end of the first pleated member 1e, and the other end is pressed against the horizontal adjustment block 9e. Through the above structure, the vertical position of the end of the first pleated member 1e can be adjusted according to actual needs, so as to obtain a mask with different pleated effects.

[0093] See also Figure 29-Figure 31 An arc-shaped conveying support 15e is provided on the outer side of the head end of the pleat assembly, and the end of the conveying support 15e is fixed on the first mounting frame 6e; when the mask cloth bypasses the conveying support 15e, the cross-section of the mask cloth is an arc-shaped cross-section.

[0094] See also Figure 29-Figure 35 The working principle of the pleat forming module of this embodiment is as follows: when working, under the action of the conveying mechanism, the mask fabric enters between the first pleat member 1e and the second pleat member 2e from the open feeding end 3e. In the process of conveying downward, the first pleat member 1e and the second pleat member 2e are respectively misplaced and relatively guide the mask fabric, and gradually complete the folding work of the mask fabric; then the mask fabric passes through the forming end 4e in a folded posture, thereby completing the pleating work, such as Fig.34In the above process, since the mask fabric can be directly conveyed downward from the open feed end 3e, and the folding work is completed in the process of conveying downward, there is no need for manual participation, and the degree of automation is high.

[0095] See also Figure 1-Figure 35 The working principle of the flat mask production line of this embodiment is:

[0096] During operation, driven by the power source, the welding roller, the slicing roller and the first transmission member 10a are driven to rotate, so that the cloth roll and the nose wire roll rotate, and the mask cloth and the nose bridge wire are gradually released; wherein, after the mask cloth is released, it is processed by the pleat forming module A to form a multi-layer pleated posture, and continues to be conveyed forward to the support platform 2; after the nose bridge wire is released, it passes through multiple groups of conveying wheels and cutting wheels, and the continuous nose bridge wire is cut into a separate nose bridge wire under the action of the cutting wheel 7; at this time, during the rotation of the cutting wheel 7, the rear part of the separate nose bridge wire continues to be conveyed, so that the separate nose bridge wire continues to move forward a short distance, so that the front part of the separate nose bridge wire moves to the mask cloth of the support platform 2 The mask fabric is connected to the material to achieve docking with the mask fabric; subsequently, driven by the feeding wheel 1, the separate bridge of the nose line connected with the mask fabric is driven to move forward synchronously with the mask fabric to ensure that the separate bridge of the nose line can continue to move forward smoothly after being cut off, and to avoid the bridge of the nose line lacking power and deviating from the mask fabric; the mask fabric continues to move forward after being connected to the separate bridge of the nose line, and after being processed by the welding module C, the front and back sides and the left and right sides of the mask fabric are welded and pressed together to complete the welding of the multi-layer mask fabric and the fixation of the position of the bridge of the nose line; finally, the mask fabric that has been welded continues to move forward to the slicing module D, and after being cut by the slicing roller, a separate planar mask body is formed to complete the entire processing process. When there is a difference in the delivery progress between the nose bridge line and the mask fabric, first suspend the operation of the equipment, loosen the detachable connection structure, remove the second transmission member 11a from the first transmission member 10a and the rotating shaft 12a, and rotate the rotating shaft 12a forward or backward, so as to realize the manual adjustment of the wire feeding wheel 9, so as to achieve the purpose of moving the nose bridge line forward or backward, and then adjust the nose bridge line to the position corresponding to the mask fabric; then, reinstall the second transmission member 11a, let the second transmission member 11a be re-fixed and connected with the first transmission member 10a and the rotating shaft 12a, and continue the normal nose bridge line delivery. Since the first transmission member 10a and the rotating shaft 12a are separated from each other, when the second transmission member 11a is removed to adjust the rotating shaft 12a, it will not affect the first transmission member 10a, each transmission mechanism and the power source, thereby reducing the difficulty of adjustment, facilitating operation, and helping to improve the adjustment accuracy of the nose bridge line delivery progress.

[0097] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A flat mask production line, characterized in that: It includes a cloth roll feeding module, a wrinkle forming module, a nose line feeding module, a welding module, a slicing module and a power source. Along the moving direction of the mask cloth, the cloth roll feeding module, the wrinkle forming module, the nose line feeding module, the welding module and the slicing module are arranged on the frame in sequence; the cloth roll feeding module includes a plurality of cloth rolls, and the plurality of cloth rolls are rotatably connected to the frame; the wrinkle forming module includes a mounting frame and a plurality of groups of wrinkle assemblies arranged on the mounting frame, and the mask cloth is wound on the wrinkle assemblies along the width direction; the welding module includes a welding roller, a welding table and an ultrasonic device, the welding table is connected to the ultrasonic device, and a welding block corresponding to the welding point on the flat mask body is arranged on the circumferential surface of the welding roller; the slicing module includes a slicing roller and a feeding roller, and the slicing roller is provided with a slicing knife extending in the axial direction, and the blade of the slicing knife is arranged tangent to the circumferential surface of the feeding roller; the welding roller and the slicing roller are connected to the power source through a first transmission mechanism; wherein, The nose wire feeding module includes a nose wire reel, a plurality of conveying group wheels, a feeding wheel and a tangent group wheel; the plurality of conveying group wheels are arranged along the moving direction of the nose bridge line, and each conveying group wheel includes a supporting wheel and a wire feeding wheel arranged above the supporting wheel; along the moving direction of the nose bridge line, the tangent group wheel is arranged in front of the plurality of conveying group wheels, the tangent group wheel includes a receiving wheel and a cutting wheel, the cutting wheel is arranged above the receiving wheel, and a wire cutting knife is provided on the cutting wheel, the blade of the wire cutting knife extends along the radial direction of the cutting wheel, and the blade of the wire cutting knife is tangent to the outer cylindrical surface of the receiving wheel; the feeding wheel is arranged in front of the tangent group wheel, and the feeding wheel is located at the corresponding position of the supporting platform where the nose bridge line and the mask fabric are joined, and the feeding wheel is tangent to the supporting platform; the wire feeding wheel, the cutting wheel and the feeding wheel are connected to each other through a second transmission mechanism; The nose wire feeding module also includes an adjustment component, which includes a first transmission member and a second transmission member, the first transmission member is passed through a rotating shaft connected to the cutting wheel and is separated from the rotating shaft, the second transmission member is sleeved on the rotating shaft and is locked with the rotating shaft, the second transmission member is fixedly connected to the first transmission member via a detachable connecting structure; the first transmission member is connected to the first transmission mechanism via a third transmission mechanism.

2. The flat mask production line according to claim 1, characterized in that: An intermediate guide is provided between the tangent group wheel and the feeding wheel; wherein, a threading groove is provided on the intermediate guide, one end of the threading groove corresponds to the cutting position between the cutting wheel and the receiving wheel, and the other end corresponds to the joining position of the mask fabric and the nose bridge line on the supporting platform; the front and rear sides of the intermediate guide are both arranged in an arc shape.

3. The flat mask production line according to claim 2, characterized in that: The intermediate guide member includes a guide block and a protective block, and the front and rear sides of the guide block and the protective block are both arranged in an arc shape; wherein, the guide block is provided with an open groove, the bottom of the open groove is extended outward, and a notch is provided at the rear end of the open groove; the bottom of the protective block is connected to the outward extension of the bottom of the open groove, and the side of the protective block and the open groove constitute the threading groove.

4. The flat mask production line according to claim 1, characterized in that: A correction mechanism is provided behind the multiple conveying group wheels, and the correction mechanism includes multiple upper pressing wheels and multiple lower top wheels. The multiple upper pressing wheels and the multiple lower top wheels are arranged in a straight line, and the multiple upper pressing wheels and the multiple lower top wheels are staggered with each other; a correction channel is formed between the multiple upper pressing wheels and the multiple lower pressing wheels.

5. The flat mask production line according to claim 1, characterized in that: The second transmission member is composed of an expansion sleeve assembly, which includes a connecting member and a sleeve ring; the sleeve ring is arranged on the inner wall of the first transmission member, and the conical sleeve of the connecting member is matched with the rotating shaft.

6. The flat mask production line according to claim 1, characterized in that: A flanging guide plate is provided on the support platform, and the flanging guide plate includes a main plate and two flanging plates respectively arranged on both sides of the main plate; wherein, the flanging plate includes a limiting portion and a guiding portion, the limiting portion is connected to the outer side of the guiding portion and extends downward, and the limiting portion is arranged in a circular arc shape; along the moving direction of the mask fabric, the inner edge of the guiding portion is gradually arranged close to the center line of the main plate, and the inner side surface of the limiting portion is gradually arranged close to the center line of the main plate; a pressing portion is provided at the front end of the guide portion, one end of the pressing portion is connected to the guiding portion, and the other end is extended in the direction of the center line.

7. The flat mask production line according to claim 6, characterized in that: The rear end of the limiting part is extended backward; along the moving direction of the mask fabric, the top surface of the limiting part located behind the guide part is inclined upward.

8. The flat mask production line according to claim 1, characterized in that: The cloth roll loading module also includes a material discharge control mechanism, which includes a pressing plate arranged above the cloth roll for pressing the surface of the cloth roll and a hammer arranged at the lower end of the pressing plate; the upper end of the pressing plate is connected to the frame, and the lower end is connected to the hammer; under the action of the hammer's own gravity, the pressing plate is pressed against the surface of the cloth roll.

9. The flat mask production line according to claim 1, characterized in that: The cloth roll feeding module also includes a feeding guide mechanism, which includes a limiting conveying member, on which is provided an arc-shaped conveying surface for supporting the mask cloth; positioning parts are provided on both sides of the arc-shaped conveying surface along the conveying direction; and a limiting channel for conveying the mask cloth is formed between the two positioning parts.

10. The flat mask production line according to claim 1, characterized in that: The pleat assembly of the pleat forming module includes a first pleat piece and a second pleat piece; wherein, along the conveying direction of the mask fabric, an open feed end for avoiding the fabric from being conveyed downward is formed between the head ends of the first pleat piece and the second pleat piece, a molding end for extruding the fabric is formed between the ends of the first pleat piece and the second pleat piece, and a folding end for guiding and folding the fabric during the forward conveying of the fabric is between the open feed end and the molding end; in the molding end, the end parts of the first pleat piece and the second pleat piece are arranged relatively to each other.

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