阅读说明：本技术 口罩自动化生产线 (Automatic production line for masks ) 是由 宁青春 卢娜 周付鑫 于 2020-07-18 设计创作，主要内容包括：本申请涉及一种口罩自动化生产线,其包括机架和固定连接于机架一端的底座,底座靠近机架一端转动连接有上辊,底座对应上辊下方位置处连接有传输带,传输带包括皮带,皮带内侧固定连接有多根条形吸铁石；底座靠近传输带位置处固定连接有支架,支架转动连接有上料盘,支架连接有切断组件,支架另一端固定连接有送料滑道；底座连接有熔接组件,本发明具有通过条形吸铁石对鼻梁条起到定位效果,熔接组件先对鼻梁条进行熔接,减少在加工过程中鼻梁条出现歪斜移动的情况的效果。(The application relates to an automatic production line of a mask, which comprises a rack and a base fixedly connected to one end of the rack, wherein one end of the base close to the rack is rotatably connected with an upper roller, a transmission belt is connected to the position, corresponding to the lower part of the upper roller, of the base, the transmission belt comprises a belt, and a plurality of strip-shaped magnets are fixedly connected to the inner side of the belt; the base is fixedly connected with a support at a position close to the transmission belt, the support is rotatably connected with a feeding disc, the support is connected with a cutting assembly, and the other end of the support is fixedly connected with a feeding slideway; the base is connected with the welding component, the nose bridge strip is positioned by the strip-shaped magnet, the welding component firstly welds the nose bridge strip, and the effect of reducing the situation that the nose bridge strip moves slantwise in the machining process is achieved.)

1. The utility model provides a gauze mask automation line, including frame (1) and base (2) of fixed connection in frame (1) one end, it is connected with many material loading rollers (11) to rotate on frame (1), frame (1) position department is kept away from in base (2) rotates and is connected with die-cutting roller (26), base (2) correspond die-cutting roller (26) top position department fixedly connected with folded sheet (25), be connected with butt fusion banding mechanism (24) between base (2) correspond die-cutting roller (26) and frame (1), its characterized in that: one end of the base (2) close to the rack (1) is rotatably connected with an upper roller (21), a transmission belt (22) is connected to the position, below the upper roller (21), of the base (2), the transmission belt (22) comprises a driving roller (221) rotatably connected to the base (2), a driven roller (222) rotatably connected to the base (2) and a belt (223) sleeved outside the driving roller (221) and the driven roller (222), a plurality of strip-shaped magnet stones (2231) are fixedly connected to the inner side of the belt (223), the strip-shaped magnet stones (2231) are arranged along the width direction of the belt (223), and the strip-shaped magnet stones (2231) are arrayed along the length direction of the belt (223);

The position, close to the conveying belt (22), of the base (2) is fixedly connected with a support (3), one end, far away from the base (2), of the support (3) is rotatably connected with an upper material tray (31), the support (3) is connected with a cutting assembly (36) used for cutting a nose bridge strip, the other end of the support (3) is fixedly connected with a feeding slide way (38), and one end, far away from the support (3), of the feeding slide way (38) is located above the belt (223);

a welding component (23) for welding the cloth around the nose bridge strip is connected to the position, close to the belt (223) and far away from the rack (1), of the base (2);

the support (3) is close to and cuts off subassembly (36) position department and rotates and be connected with initiative carry over pinch rolls (39) and driven carry over pinch rolls (392), and support (3) are close to initiative carry over pinch rolls (39) position department fixedly connected with traction motor (391), and the output shaft fixed connection of traction motor (391) is on initiative carry over pinch rolls (39), and the distance between initiative carry over pinch rolls (39) and the driven carry over pinch rolls (392) equals the thickness of bridge of the nose strip raw materials.

2. The mask automatic production line according to claim 1, characterized in that: butt fusion subassembly (23) are including support frame (231) of fixed connection on base (2), and support frame (231) correspond the cylinder body of position department fixedly connected with punching press cylinder (232) directly over belt (223), and the vertical downward setting of piston rod of punching press cylinder (232), piston rod fixedly connected with connecting plate (233) of punching press cylinder (232), and connecting plate (233) fixedly connected with have butt fusion frame (234) of butt fusion ability, and butt fusion frame (234) can surround the bridge of the nose strip.

3. The mask automatic production line according to claim 2, characterized in that: the inner side of the welding frame (234) is connected with a positioning frame (235) with elasticity, the cross-sectional area of the inner side of the positioning frame (235) is equal to that of the nose bridge strip, a plurality of springs (2351) are fixedly connected to the top of the positioning frame (235), the other ends of the springs (2351) are fixedly connected to the connecting plate (233), and the lower surface of the welding frame (234) and the lower surface of the positioning frame (235) are located on the same horizontal plane in a natural state of the springs (2351).

4. The mask automatic production line according to claim 3, wherein: an inclined plane (2352) is arranged on one side, away from the spring (2351), of the positioning frame (235), and the inclined plane (2352) is inclined upwards from the outer side of the positioning frame (235) to the inner side of the positioning block.

5. The mask automatic production line according to claim 1, characterized in that: the cutting assembly (36) comprises a fixed knife (361) fixedly connected to the support (3), a cylinder body of a punching cylinder (362) is fixedly connected to the position, close to the fixed knife (361), of the support (3), a movable knife (363) is fixedly connected to a piston rod of the punching cylinder (362), and the movable knife (363) can abut against the side face of the fixed knife (361).

6. The mask automatic production line according to claim 5, wherein: the nose bridge protection device is characterized in that a rotating shaft (35) is rotatably connected to the support (3), a roller (351) and a cam (352) are fixedly connected to the rotating shaft (35), the circumference of the roller (351) is equal to the length of the nose bridge strip, the roller (351) can be abutted against the nose bridge strip, a travel switch (3711) is fixedly connected to the position, corresponding to the cam (352), of the support (3), the cam (352) can be abutted against the travel switch (3711), the travel switch (3711) is connected with a control circuit (37), and the control circuit (37) comprises a response module (371) and a control module (372);

The response module (371) is connected with a travel switch (3711), and when the cam (352) abuts against the travel switch (3711), the response module (371) outputs a driving signal to the control module (372);

the control module (372) receives the driving signal and then controls the piston rod of the breaking cylinder (362) to extend and retract.

7. The mask automatic production line according to claim 1, characterized in that: the support (3) is close to the position of the upper tray (31) and is fixedly connected with a flattening block (32), a through groove (321) is formed in the flattening block (32), and the area of the longitudinal section of the through groove (321) is equal to the area of the longitudinal section of the nose bridge strip.

8. The mask automatic production line according to claim 1, characterized in that: the support (3) is rotatably connected with a plurality of lower tensioning wheels (33), the support (3) is slidably connected with a sliding plate (34) at a position close to the lower tensioning wheels (33), the sliding plate (34) vertically slides on the support (3), the sliding plate (34) is rotatably connected with a plurality of upper tensioning wheels (341), the sliding plate (34) is connected with a fastening bolt (342) in a threaded manner, and the fastening bolt (342) can abut against the support (3).

9. The mask automatic production line according to claim 1, characterized in that: the base (2) is close to the die-cutting roller (26) and is fixedly connected with a driving motor (271), an output shaft of the driving motor (271) is fixedly connected with a waste roller (27), the base (2) is close to the waste roller (27) and is rotatably connected with a material supporting roller (28), and the distance between the waste roller (27) and the material supporting roller (28) is equal to the thickness of a mask.

10. The mask automatic production line according to claim 1, characterized in that: the base (2) is fixedly connected with a transmission motor (224) at a position close to the driving roller (221), and an output shaft of the transmission motor (224) is fixedly connected to the driving roller (221).

Technical Field

The invention relates to the technical field of mask production and processing equipment, in particular to an automatic mask production line.

Background

At present, the epidemic prevention mask is of a multilayer structure, an elastic nose bridge strip is embedded on the epidemic prevention mask, and the nose bridge strip is generally made of an iron material and has good toughness. When the mask is produced, multiple layers of cloth need to be overlapped together, the nose bridge strip is placed to the outermost part to be the cloth, all the cloth is welded together by using a welding edge sealing mechanism, and the outline of the mask is hot pressed. Finally, the mask is cut off according to the contour, and the mask is hot-pressed and then hung on ears.

The above prior art solutions have the following drawbacks: in the gauze mask course of working, need inlay multilayer cloth assigned position department with the bridge of the nose strip, but this moment the bridge of the nose strip not with cloth snap-on, in the course of working of production line formula, the bridge of the nose strip can appear unavoidably and take place to remove in transmission course, lead to follow-up butt fusion in-process problem appearing, produce the substandard product.

Disclosure of Invention

In order to reduce the crooked condition of removing of nose bridge strip appearance in the course of working, this application provides a gauze mask automation line.

The application provides a gauze mask automation line adopts following technical scheme:

an automatic production line for a mask comprises a rack and a base fixedly connected to one end of the rack, wherein a plurality of feeding rollers are rotatably connected to the rack, a die-cutting roller is rotatably connected to the position, away from the rack, of the base, a folding plate is fixedly connected to the position, corresponding to the upper part of the die-cutting roller, of the base, a welding and edge-sealing mechanism is connected between the die-cutting roller and the rack, an upper roller is rotatably connected to one end, close to the rack, of the base, a transmission belt is connected to the position, corresponding to the lower part of the upper roller, of the base, the transmission belt comprises a driving roller rotatably connected to the base, a driven roller rotatably connected to the base and a belt sleeved outside the driving roller and the driven roller, a plurality of strip-shaped magnets are fixedly connected to;

A support is fixedly connected to the position, close to the transmission belt, of the base, one end, far away from the base, of the support is rotatably connected with a feeding disc, the support is connected with a cutting assembly used for cutting a nose bridge strip, a feeding slide way is fixedly connected to the other end of the support, and one end, far away from the support, of the feeding slide way is located above the belt;

the base is connected with a welding component for welding the cloth around the nose bridge strip at the position close to the belt and far away from the rack;

the support is close to and cuts off subassembly position department and rotates and be connected with initiative carry over pinch rolls and driven carry over pinch rolls, and the support is close to initiative carry over pinch rolls position department fixedly connected with traction motor, and traction motor's output shaft fixed connection is on the initiative carry over pinch rolls, and the distance between initiative carry over pinch rolls and the driven carry over pinch rolls equals the thickness of bridge of the nose strip raw materials.

Through adopting above-mentioned scheme, the user overlaps the cloth of bundling on the material loading roller, overlap the bridge of the nose strip raw materials of bundling on the charging tray, the cloth arrives on the conveyer belt through the material loading roller, outmost cloth is walked around and is gone up the roller and stretch on the conveyer belt, bridge of the nose strip removes to cut off subassembly department from last charging tray and cuts off, bridge of the nose strip after cutting off slides on the cloth that is located the conveyer belt along the pay-off slide, receive the attraction of bar magnet, then outmost cloth covers on the bridge of the nose strip, bar magnet moves along with bridge of the nose strip together, guarantee that bridge of the nose strip can not remove at will, then the butt fusion subassembly is with the cloth butt fusion around the bridge of the nose strip, thoroughly prevent bridge of the nose strip. The condition that the nose bridge strip is inclined to move in the machining process can be effectively reduced, and the defective rate of products is reduced.

Preferably, the butt fusion subassembly includes the support frame of fixed connection on the base, and the support frame corresponds the cylinder body of position department fixedly connected with punching press cylinder directly over the belt, and the piston rod of punching press cylinder sets up vertically downwards, and the piston rod fixedly connected with connecting plate of punching press cylinder, connecting plate fixedly connected with have the butt fusion frame of butt fusion ability, and the butt fusion frame can surround the bridge of the nose strip.

Through adopting above-mentioned scheme, punching press cylinder drives the butt fusion frame and reciprocates, just can be in the same place the cloth butt fusion around the bridge of the nose strip on the butt fusion frame butt is to the cloth, prevents the bridge of the nose strip and removes at will in the cloth.

Preferably, the butt fusion frame inboard is connected with and has elastic locating frame, and the inboard cross-sectional area of locating frame equals the cross-sectional area of bridge of the nose strip, many springs of locating frame top fixedly connected with, the equal fixed connection of the spring other end on the connecting plate, and butt fusion frame lower surface and locating frame lower surface are located same horizontal plane under the spring natural state.

Through adopting above-mentioned scheme, when the butt joint frame during on the cloth, the locating frame can surround bridge of the nose earlier strip, fixes bridge of the nose strip, and bridge of the nose strip is unmovable when guaranteeing the butt joint, can also correct bridge of the nose strip's position when bridge of the nose strip is crooked a little simultaneously, further reduces the defective percentage.

Preferably, an inclined plane is arranged on one side, away from the spring, of the positioning frame, and the inclined plane is obliquely arranged from the outer side of the positioning frame to the inner side of the positioning block.

Through adopting above-mentioned scheme, the inclined plane can increase the degree that the locating frame was corrected nose bridge strip, further reduces the defective percentage.

Preferably, the cutting assembly comprises a fixed knife fixedly connected to the support, the support is fixedly connected with a cylinder body of a punching cylinder at a position close to the fixed knife, a piston rod of the punching cylinder is fixedly connected with a movable knife, and the movable knife can abut against the side face of the fixed knife.

By adopting the scheme, when the punching cylinder pushes the movable cutter to move towards the fixed cutter, the nose bridge strip raw material between the fixed cutter and the movable cutter can be cut off.

Preferably, the support is rotatably connected with a rotating shaft, the rotating shaft is fixedly connected with a roller and a cam, the circumference of the roller is equal to the length of the nose bridge strip, the roller can abut against the nose bridge strip, a travel switch is fixedly connected to the position, corresponding to the cam, of the support, the cam can abut against the travel switch, the travel switch is connected with a control circuit, and the control circuit comprises a response module and a control module;

the response module is connected with the travel switch, and when the cam abuts against the travel switch, the response module outputs a driving signal to the control module;

The control module receives the driving signal and then controls the piston rod of the breaking cylinder to extend out and then retract.

Through adopting above-mentioned scheme, the bridge of the nose strip raw materials can drive the gyro wheel when the gyro wheel rotates, when the gyro wheel has rotated the round, the bridge of the nose strip raw materials just removes the length that equals a bridge of the nose strip, the cam is driven by the gyro wheel and also rotates the round this moment, the cam passes through travel switch control break cylinder action, break cylinder drive and move the sword and cut off bridge of the nose strip raw materials, it will be more reliable than through electric component control break cylinder such as meter rice ware, be difficult to the problem.

Preferably, the support is fixedly connected with a flattening block at a position close to the feeding disc, the flattening block is provided with a through groove, and the area of the longitudinal section of the through groove is equal to the area of the longitudinal section of the nose bridge strip.

By adopting the scheme, the flattening block is used for flattening the nose bridge strip raw material, and the subsequent processing precision is ensured.

Preferably, the support is rotatably connected with a plurality of lower tensioning wheels, the support is slidably connected with a sliding plate at a position close to the lower tensioning wheels, the sliding plate vertically slides on the support, the sliding plate is rotatably connected with a plurality of upper tensioning wheels, the sliding plate is in threaded connection with fastening bolts, and the fastening bolts can abut against the support.

Through adopting above-mentioned scheme, bridge of the nose strip raw materials passes through between last take-up pulley and the lower take-up pulley, goes up the take-up pulley and moves down, and follow-up machining precision is guaranteed to tensioning bridge of the nose strip raw materials.

Preferably, the base is close to die-cutting roller position department fixedly connected with driving motor, and driving motor's output shaft fixedly connected with waste material roller, and the base is close to waste material roller position department and rotates and is connected with the support material roller, and the interval between waste material roller and the support material roller equals the thickness of a gauze mask.

Through adopting above-mentioned scheme, driving motor drive waste material roller rotates, and the waste material after having been cut by the die-cutting roller is through between waste material roller and the support material roller, is driven away by the waste material roller, and the user of being convenient for collects the waste material.

Preferably, the base is fixedly connected with a transmission motor at a position close to the driving roller, and an output shaft of the transmission motor is fixedly connected to the driving roller.

Through adopting above-mentioned scheme, transmission motor drives the drive roll and rotates, and the drive roll drives the belt and rotates.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of a conveyor belt and an upper roller according to an embodiment of the present application;

FIG. 3 is a schematic view of a stent section of an embodiment of the present application;

FIG. 4 is a schematic view of a driving pull roll, a driven pull roll, and a pull motor of an embodiment of the present application;

FIG. 5 is a block diagram of a control circuit of an embodiment of the present application;

FIG. 6 is a cross-sectional view of a fused assembly of an embodiment of the present application;

FIG. 7 is a schematic view of a scrap roller and a stripper roller according to an embodiment of the present application.

In the figure, 1, a frame; 11. a feeding roller; 2. a base; 21. upper roll; 22. a conveyor belt; 221. a drive roll; 222. a driven roller; 223. a belt; 2231. a bar-shaped magnet; 224. a transmission motor; 23. a welding assembly; 231. a support frame; 232. punching a cylinder; 233. a connecting plate; 234. welding the frame; 235. a positioning frame; 2351. a spring; 2352. a bevel; 24. a welding edge sealing mechanism; 25. folding the board; 26. a die-cutting roller; 27. a scrap roll; 271. a drive motor; 28. a material supporting roller; 3. a support; 31. feeding a material plate; 32. flattening the block; 321. a through groove; 33. a lower tension wheel; 34. a sliding plate; 341. an upper tension wheel; 342. fastening a bolt; 35. a rotating shaft; 351. a roller; 352. a cam; 36. cutting off the assembly; 361. fixing a knife; 362. breaking the cylinder; 363. moving the knife; 37. a control circuit; 371. a response module; 3711. a travel switch; 372. a control module; 38. a feeding chute; 39. a driving traction roller; 391. a traction motor; 392. a driven traction roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses gauze mask automation line, as shown in fig. 1, including frame 1 and fixed connection in the base 2 of frame 1 one end, rotate on the frame 1 and be connected with many material loading rollers 11. The user can put the bundle of cloth on the loading roller 11. The base 2 is far away from the position of the frame 1 and is connected with a die-cutting roller 26 in a rotating way, the base 2 corresponds to a triangular folding plate 25 fixedly connected with the position above the die-cutting roller 26, and the base 2 corresponds to a welding edge sealing mechanism 24 between the die-cutting roller 26 and the frame 1. The cloth passes through the welding banding mechanism 24 from the material loading roller 11 and accomplishes the butt fusion banding, and the folding plate 25 carries out the fifty percent discount with the cloth after the butt fusion, and the cloth after the fifty percent discount is cut along the welded border by die-cutting roller 26, can obtain the gauze mask that does not have the ear area.

As shown in fig. 1 and 2, an upper roller 21 is rotatably connected to one end of the base 2 close to the frame 1, and a conveyor belt 22 is connected to the base 2 at a position corresponding to a lower position of the upper roller 21. The transmission belt 22 includes a driving roller 221 rotatably connected to the base 2, a driven roller 222 rotatably connected to the base 2, and a belt 223 sleeved outside the driving roller 221 and the driven roller 222. The base 2 is fixedly connected with a transmission motor 224 near the driving roller 221, and an output shaft of the transmission motor 224 is fixedly connected to the driving roller 221. The cloth passes through material loading roller 11 and reaches on the transmission band 22, and outmost cloth is walked around last roller 21 and is stretched on transmission band 22, and transmission motor 224 drives drive roll 221 and rotates, and drive roll 221 drives the belt 223 and rotates, and the belt 223 can drive the cloth and remove. A plurality of bar-shaped magnet 2231 are fixedly connected to the inner side of the belt 223, the bar-shaped magnet 2231 is arranged along the width direction of the belt 223, and the bar-shaped magnet 2231 is arrayed along the length direction of the belt 223. The nose bridge bar is attracted by the bar-shaped magnet 2231 when on the belt 223, then the outmost cloth covers the nose bridge bar, and the bar-shaped magnet 2231 moves along with the nose bridge bar, and the nose bridge bar is guaranteed not to move at will.

As shown in fig. 1 and 3, a support 3 is fixedly connected to a position of the base 2 close to the conveyor belt 22, an upper tray 31 is rotatably connected to one end of the support 3 far from the base 2, and a user can sleeve a bundle of nose bridge strip raw materials on the upper tray 31. The support 3 is connected with and cuts off subassembly 36, cuts off subassembly 36 including fixed sword 361 on fixed connection support 3, and support 3 is close to fixed sword 361 position fixedly connected with the cylinder body of breaking cylinder 362, and the piston rod fixedly connected with of breaking cylinder 362 moves sword 363, moves sword 363 and can butt in fixed sword 361 side. The other end of the bracket 3 is fixedly connected with a feeding slideway 38, and one end of the feeding slideway 38, which is far away from the bracket 3, is positioned above the belt 223. When the breaking cylinder 362 pushes the movable knife 363 to move towards the fixed knife 361, the nose bridge strip raw material between the fixed knife 361 and the movable knife 363 can be cut off. The cut nose bridge strip can be slid along the feeder slide 38 onto the cloth on the conveyor belt 22.

As shown in fig. 3 and 4, a driving traction roller 39 and a driven traction roller 392 are rotatably connected to the support 3 near the cutting assembly 36, a traction motor 391 is fixedly connected to the support 3 near the driving traction roller 39, and an output shaft of the traction motor 391 is fixedly connected to the driving traction roller 39. The distance between the driving pull roll 39 and the driven pull roll 392 is equal to the thickness of the nose bridge strip stock. The traction motor 391 drives the driving traction roller 39 to rotate, the nose bridge strip raw material passes through the driving traction roller 39 and the driven traction roller 392, and the driving traction roller 39 drives the nose bridge strip raw material to move, so that the effect of traction of the nose bridge strip raw material is achieved.

As shown in fig. 3 and 5, the support 3 is rotatably connected with a rotating shaft 35, the rotating shaft 35 is fixedly connected with a roller 351 and a cam 352, and the circumference of the roller 351 is equal to the length of the nose bridge. The roller 351 can abut against the nose bridge strip. A stroke switch 3711 is fixedly connected to the bracket 3 at a position corresponding to the cam 352, and the cam 352 can abut against the stroke switch 3711. The control circuit 37 is connected to the travel switch 3711, and the control circuit 37 includes a response module 371 and a control module 372. The response module 371 is connected to the travel switch 3711, and when the cam 352 abuts against the travel switch 3711, the response module 371 outputs a driving signal to the control module 372. The control module 372 receives the driving signal and controls the piston rod of the blow cylinder 362 to extend and then retract. Nose bridge strip raw materials can drive gyro wheel 351 and rotate when gyro wheel 351, when gyro wheel 351 has rotated the round, nose bridge strip raw materials just removed the length that equals a nose bridge strip, cam 352 was driven by gyro wheel 351 and also rotated the round this moment, cam 352 passes through travel switch 3711 control break cylinder 362 action, break cylinder 362 drives and moves sword 363 and cuts off nose bridge strip raw materials, it is more reliable than through electric component control break cylinder 362 such as meter rice ware, be difficult to the problem.

As shown in fig. 3, a flattening block 32 is fixedly connected to the position of the bracket 3 close to the feeding tray 31, a through groove 321 is formed in the flattening block 32, the area of the longitudinal section of the through groove 321 is equal to the area of the longitudinal section of the nose bridge strip, and the shape of the longitudinal section of the through groove 321 is the same as the shape of the longitudinal section of the nose bridge strip. The flattening block 32 is used for flattening the nose bridge strip raw material, so that the subsequent processing precision is ensured.

As shown in fig. 3, a plurality of lower tension pulleys 33 are rotatably connected to the bracket 3, a sliding plate 34 is slidably connected to the position of the bracket 3 close to the lower tension pulleys 33, the sliding plate 34 vertically slides on the bracket 3, a plurality of upper tension pulleys 341 are rotatably connected to the sliding plate 34, a fastening bolt 342 is threadedly connected to the sliding plate 34, and the fastening bolt 342 can abut against the bracket 3. The nose bridge strip raw material passes through between upper tensioning wheel 341 and lower tensioning wheel 33, and upper tensioning wheel 341 moves down, and tensioning nose bridge strip raw material guarantees follow-up machining precision.

As shown in fig. 1 and 6, the base 2 is close to the belt 223 and is far away from the frame 1, and the welding assembly 23 is connected to the base 2, and the welding assembly 23 includes a support frame 231 fixedly connected to the base 2, and the support frame 231 corresponds to the cylinder body of the punching cylinder 232 fixedly connected to the position right above the belt 223, and the piston rod of the punching cylinder 232 is vertically arranged downwards. The piston rod of the stamping cylinder 232 is fixedly connected with a connecting plate 233, the connecting plate 233 is fixedly connected with a welding frame 234 with welding capacity, and the welding frame 234 can surround the nose bridge strip. The welding frame 234 can be externally connected with a heating device, and the welding frame 234 can weld the cloth after being heated. The inner side of the welding frame 234 is connected with an elastic positioning frame 235, the cross-sectional area of the inner side of the positioning frame 235 is equal to that of the nose bridge strip, the top of the positioning frame 235 is fixedly connected with a plurality of springs 2351, the other ends of the springs 2351 are fixedly connected to the connecting plate 233, and the lower surface of the welding frame 234 and the lower surface of the positioning frame 235 are located on the same horizontal plane in a natural state of the springs 2351. An inclined surface 2352 is arranged on one side of the positioning frame 235 far away from the spring 2351, and the inclined surface 2352 is arranged in a manner that the outer side of the positioning frame 235 inclines upwards into the positioning block. The stamping cylinder 232 drives the welding frame 234 to move up and down, and the welding frame 234 can weld the cloth around the nose bridge strip together after being abutted to the cloth, so that the nose bridge strip is prevented from moving randomly in the cloth. When welding frame 234 butt to the cloth on, the nose bridge strip can be encircleed earlier to locating frame 235, fixes the nose bridge strip, and the nose bridge strip is unmovable when guaranteeing the butt fusion, can also correct the position of nose bridge strip when nose bridge strip is crooked a little simultaneously, and inclined plane 2352 can increase the degree that locating frame 235 corrected nose bridge strip, further reduces the defective percentage.

As shown in fig. 1 and 7, a driving motor 271 is fixedly connected to the base 2 near the die-cutting roller 26, a waste roller 27 is fixedly connected to an output shaft of the driving motor 271, a material supporting roller 28 is rotatably connected to the base 2 near the waste roller 27, and the distance between the waste roller 27 and the material supporting roller 28 is equal to the thickness of a mask. The driving motor 271 drives the waste roller 27 to rotate, and waste materials cut by the die-cutting roller 26 pass between the waste roller 27 and the material supporting roller 28 and are driven by the waste roller 27 to be conveyed away, so that a user can collect the waste materials conveniently.

The implementation principle of an automatic mask production line in the embodiment of the application is as follows: the user sleeves the bundle of cloth on the feeding roller 11 and sleeves the bundle of nose bridge strip raw material on the feeding tray 31. The cloth is drawn to the die-cutting roll 26 and the production line is started. The cloth passes the feeding roller 11 onto the conveyor belt 22, and the outermost cloth extends onto the conveyor belt 22 around the upper roller 21. The driving traction roller 39 drives the nose bridge strip raw material to move on the support 3, the nose bridge strip raw material is flattened and tensioned by the flattening block 32, the upper tensioning wheel 341 and the lower tensioning wheel 33, and is finally cut by the cutting assembly 36, and the cut nose bridge strip slides to the cloth on the conveying belt 22 along the feeding slide way 38. The bar-shaped magnet 2231 attracts the nose bridge strip, the outmost cloth covers the nose bridge strip through the upper roller 21, and the bar-shaped magnet 2231 moves together with the nose bridge strip to ensure that the nose bridge strip cannot move randomly. The punching cylinder 232 drives the welding frame 234 to move downwards, so that the cloth around the nose bridge strip is welded together, and the nose bridge strip is prevented from moving freely in the cloth. And then, carrying out fusion sealing by a fusion sealing mechanism 24, folding the sealed cloth by a folding plate 25, and finally cutting the mask without ear bands by a die cutting roller 26. The waste material is collected by the user passing between the waste roller 27 and the carrier roller 28.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.