A mask with ear straps and hemming and its preparation system

Abstract

The present invention discloses a mask with ear straps and hemming and a preparation system thereof, belonging to the technical field of masks. The system includes a frame, a mask body production device, a compounding device, an hemming slitting device, a front conveying structure, a middle conveying structure, an elastic band supplying device, an ear strap forming device, a front composite negative pressure transfer wheel, a transverse speed-changing device, a rear composite negative pressure transfer wheel and an ear strap negative pressure transfer wheel. The system changes the mask body from longitudinal to transverse through the transverse speed-changing device, and then simultaneously compounds with the transverse ear straps and two hemmings at the compounding device, and finally cuts off the hemmings between two adjacent masks to obtain the product. This patent draws on the transverse speed-changing device in the sanitary napkin production process, realizes the compounding of the ear straps and the mask body along a specific direction, and has the advantages of fast production speed and high yield rate.

Description

Technical Field

[0001] The invention belongs to the technical field of masks, and in particular relates to a mask with ear straps and hemming and a preparation system thereof. Background Art

[0002] With the rapid spread of the coronavirus in the world, the demand for masks is increasing day by day, resulting in more types and varieties of masks, such as masks with elastic ear straps.

[0003] The prior art discloses a variety of elastic ear strap production systems, such as the patent with application number CN202020251497.5 discloses an elastic ear strap mask production line, which is characterized in that: it includes a main body forming device, a nose bridge line composite device, an active clamping device, an ear strap composite device, a belt conveyor device, a finished product cutting device and a storage table in sequence from front to back, the main body forming device includes an inner layer non-woven fabric unwinding device, an outer layer non-woven fabric unwinding device, a filter layer unwinding device, a three-layer material composite device, a folding device and a flattening device, and the folding device is located between the three-layer material composite device and the flattening device; The nose bridge line composite device includes, from front to back, a nose bridge line unwinding device, a nose bridge line conveying device, a phase clamping device, a nose bridge line cutting device and an edge embossing box, and the edge embossing box is located between the flattening device and the active clamping device; the ear band composite device includes, from front to back, an ear band unwinding device, a tension adjusting device, a conveying wind bucket, an ear band cutting device and an ear band embossing box, and the ear band embossing box is located between the active clamping device and the belt conveying device; the inner layer non-woven fabric unwinding device, the outer layer non-woven fabric unwinding device, the filter layer unwinding device, the nose bridge line unwinding device and the ear band unwinding device are all constant tension automatic unwinding devices.

[0004] For example, the patent with application number CN202020579024.8 discloses a manufacturing equipment for ultra-high-speed disposable elastic ear-loop three-dimensional masks, including a raw material part and an equipment function part, both of which are installed on the equipment frame, the raw material part is used to provide raw materials for mask production, and the equipment function part is used to produce masks; the raw material part includes an inner layer supply system A, an intermediate filter layer supply system B, an outer layer supply system C and an elastic ear loop supply system D, wherein the inner layer supply system A is used to provide raw materials for the inner layer of the mask, the intermediate filter layer supply system B is used to provide raw materials for the intermediate filter layer of the mask, the outer layer supply system C is used to provide outer layer materials for mask production, and the The elastic ear band supply system D is used to provide elastic ear band materials for mask production; the functional parts of the equipment include an ultrasonic embossing system E on both sides, a traction system F, a folding system G, a traction system H, a folding edge ultrasonic embossing system I, a molding cutter system J, a waste recovery system K and a finished product output system L, wherein the ultrasonic embossing system E on both sides is used for ultrasonic embossing processing of masks, the traction system F and the traction system H are used for traction of mask production materials, the folding system G is used for folding processing of mask production, the folding edge ultrasonic embossing system I is used for ultrasonic embossing processing of folding edge of masks, the molding cutter system J is used for cutting masks, and the waste recovery system K is used for waste masks. Recycling, the finished product output system L is used for the transportation of finished masks; the inner layer supply system A includes an inner layer non-woven fabric left roll, an inner layer non-woven fabric right roll and an inner layer non-woven fabric automatic cutting and splicing device, an inner layer non-woven fabric tension swing rod, an inner layer non-woven fabric traction wheel, a secondary tension swing rod one and an inner layer non-woven fabric deviation corrector; the middle filter layer supply system B includes a middle filter layer right roll, a middle filter layer left roll, an middle filter layer automatic cutting and splicing device, a middle filter layer tension swing rod, a middle filter layer traction wheel, a secondary tension swing rod two and an middle filter layer deviation corrector; the outer layer supply system C includes an outer layer non-woven fabric right roll, an outer layer non-woven fabric left roll, an outer layer non-woven fabric automatic cutting and splicing device, an outer layer non-woven fabric tension swing rod, an outer layer non-woven fabric traction wheel, a secondary tension swing rod two and an inner layer non-woven fabric deviation corrector. Tension swing rod 3, outer non-woven fabric deviation corrector and composite traction wheel; the elastic ear band supply system D includes elastic ear band non-woven fabric left roll, elastic ear band non-woven fabric right roll, elastic ear band non-woven fabric automatic cutting and splicing device, 26-elastic ear band non-woven fabric tension swing rod, elastic ear band non-woven fabric traction wheel, secondary tension swing rod 4, elastic ear band non-woven fabric deviation corrector and elastic ear band composite traction wheel; the traction system 1 F includes traction roller 1, and the traction system 2 H includes traction roller 2; the elastic ear band non-woven fabric deviation corrector includes elastic ear band inner side deviation corrector and elastic ear band outer side deviation corrector; the folding system G includes a folding device and a folding deviation corrector; the folding edge sealing ultrasonic embossing system I includes a folding edge sealing ultrasonic embossing device;The two-side ultrasonic embossing system E includes two-side ultrasonic embossing devices, the forming cutter system J includes a forming cutter device and a central slitting cutter device, the waste recycling system K includes a waste recycling device, and the finished product output system L includes a finished product conveying device, and the conveying device includes a first negative pressure conveying trough, a third negative pressure conveying trough and a fourth negative pressure conveying trough sequentially arranged along the feeding direction of the cloth. ;

[0005] For example, the patent with application number CN202021768222.5 discloses a full-servo high-speed production line for elastic ear-band flat masks, including a skin-friendly layer feeding mechanism, a meltblown cloth feeding mechanism, an outer layer feeding mechanism, a nose bridge strip feeding mechanism, a lining material feeding mechanism, an embossing mechanism on both sides of the mask, an embossing mechanism at both ends of the mask, an ear strap pressure point mechanism, a mask forming and cutting mechanism, a bellows transmission combination and a frame. The nose bridge strip feeding mechanism is composed of a nose bridge strip material roll, a nose bridge strip clamping and straightening mechanism and a nose bridge strip cutter. The nose bridge strip material roll is formed by winding the nose bridge strip. The nose bridge cutter includes a supporting wheel, a feeding pipe, a cutter, and a cutter fixing seat. A cutter pad is installed on the cutter fixing seat. A cutter pressing plate is provided on the cutter pad. The cutter is fixed between the cutter pad and the cutter pressing plate. There are multiple cutters, and the multiple cutters are distributed in a triangle. An adjusting bolt is connected to one end of the cutter pad. The nose bridge strip passes through the feeding pipe. The lining material feeding mechanism includes a lining material roll, an ear strap folding and dotting mechanism, an ear strap slitting mechanism, an ear strap folding plate and a leveling mechanism. The lining material roll is an elastic non-woven fabric and is used to make ear straps.

[0006] When preparing masks with elastic ear straps, the applicant found that some elastic straps have elasticity in only one direction, but not in the other direction. Therefore, when the ear straps are combined with the mask body, the ear straps or the mask need to be reversed. Summary of the invention

[0007] One of the purposes of the present invention is: the embodiment of the present invention provides a system for preparing a mask with ear straps and hemming. The system changes the mask body from longitudinal to transverse through a transverse speed-changing device, and then simultaneously composites it with the transverse ear straps and two hemmings at a composite device, and finally cuts off the hemmings between two adjacent masks to obtain the product. This patent draws on the transverse speed-changing device in the sanitary napkin production process, realizes the composite of the ear straps and the mask body along a specific direction, and has the advantages of fast production speed and high yield rate. The second purpose of the present invention is: to provide a mask produced by the aforementioned preparation system. The technical scheme is as follows:

[0008] On the one hand, an embodiment of the present invention provides a mask with ear straps and edging, comprising a rectangular mask body 1, two edgings 2 on two wide sides of the mask body 1, and 8-shaped ear straps 3; the ear straps 3 are arranged along the long side direction of the mask body 1, and their two ends are fixed on the edging 2 on the corresponding side, and a separation line 4 is provided in the middle along the wide side direction of the mask body 1, and two hanging holes 5 are provided on the two sides of the separation line 4, which are elastic only along the long side direction of the mask body 1; the two ends of the edging 2 extend outward relative to the corresponding long sides of the mask body 1.

[0009] Specifically, the ear straps 3 and the edging 2 in the embodiment of the present invention are fixed to the mask body 1 by ultrasound, the separation line 4 is an ant line, and the end of the edging 2 extends outward from the mask body 1 by a distance of 0.5-1.0 cm.

[0010] On the other hand, an embodiment of the present invention further provides a system for preparing a mask with ear straps and hemming, the preparation system comprising a frame, a mask body production device at the front of the frame, a composite device in the middle of the frame, and an hemming slitting device 21 at the rear of the frame, the mask body production structure outputs the mask body 1 backward along the front-to-back direction, the composite device comprises a composite conveyor belt 6 arranged along the front-to-back direction, a composite roller 7 adjacent to and above the composite conveyor belt 6, an hemming supply structure 8 above the composite conveyor belt 6 and located in front of the composite roller 7, two ultrasonic welding structures on the left and right sides of the composite conveyor belt 6 and located adjacent to and below the composite roller 7, and two hemming structures on the left and right sides of the composite conveyor belt 6 and located in front of the ultrasonic welding structure, the hemming supply structure 8 outputs respectively Two hemming edges 2 to two hemming structures, the rear end of the composite conveyor belt 6 is connected to the hemming slitting device 21 through the front-to-back rear conveying structure 11; the preparation system also includes a front conveying structure 9, a middle conveying structure 10, an elastic band supply device, an ear band forming device, a front composite negative pressure transfer wheel 12, a horizontal speed change device 13, a rear composite negative pressure transfer wheel 14 and an ear band negative pressure transfer wheel 15 on the frame, the front conveying structure 9 is arranged along the front-to-back direction and is output backward by the mask body production device, the front composite negative pressure transfer wheel 12 is located adjacent to the upper rear end of the front conveying structure 9, the horizontal speed change device 13 is located on the rear side of the front composite negative pressure transfer wheel 12 and is tangent to the front composite negative pressure transfer wheel 12, and the rear composite negative pressure transfer wheel 14 Located at the rear side of the transverse speed change device 13 and tangent to the transverse speed change device 13, a middle conveying structure 10 is provided between the lower side of the rear composite negative pressure transfer wheel 14 and the front end of the composite conveyor belt 6 along the front-to-back direction, the ear band forming device includes a forming pressure roller 16 and a negative pressure knife roller 17 arranged side by side up and down, the elastic band 18 output by the elastic band supply device is input forward between the negative pressure knife roller 17 and the forming pressure roller 16, the ear band negative pressure transfer wheel 15 is located between the negative pressure knife roller 17 and the composite roller 7 and its front and rear sides are tangent to the composite roller 7 and the negative pressure knife roller 17 respectively, the negative pressure knife roller 17 is provided with a plurality of left and right cutting units that match the shape of the ear band 3, and the ear band negative pressure transfer wheel 15 is provided with a plurality of left and right adsorption units 19; The composite roller 7 is a negative pressure roller, on which a plurality of left-right adsorption units 19 are arranged, and two welding convex patterns 20 cooperating with the ultrasonic welding structure are arranged on the circumferential surface and at the ends of the adsorption units 19; the adsorption units 19 are a plurality of adsorption holes arranged in the shape of the ear band 3, and the welding convex patterns 20 are circular ring structures coaxially arranged with the composite roller 7; the cutting units on the negative pressure knife roller 17 cooperate with the adsorption units 19 on the ear band negative pressure transfer wheel 15, and the adsorption units 19 on the ear band negative pressure transfer wheel 15 cooperate with the adsorption units 19 on the composite roller 7; the adsorption plate 29 of the transverse speed change device 13 is arranged vertically when it rotates to the front composite negative pressure transfer wheel 12, and is arranged horizontally when it rotates to the rear composite negative pressure transfer wheel 14;The adsorption unit 19 on the composite roller 7 matches the mask body 1 on the composite conveyor belt 6 one by one. ;

[0011] Specifically, the rear composite negative pressure transfer wheel 14 in the embodiment of the present invention is located in front of the edging structure, the ear band negative pressure transfer wheel 15 is located behind the composite roller 7, the negative pressure knife roller 17 is located behind the ear band negative pressure transfer wheel 15, the ear band negative pressure transfer wheel 15 and the ear band forming device are both located above the rear conveying structure 11 and in front of the edging slitting device 21, and the elastic band supply device is located in front of and above the ear band forming device and a traction roller is provided therebetween.

[0012] Among them, the front composite negative pressure transfer wheel 12 in the embodiment of the present invention rotates forward, the transverse speed change device 13 rotates backward, the rear composite negative pressure transfer wheel 14 rotates forward, the composite roller 7 rotates forward, the ear band negative pressure transfer wheel 15 rotates backward, the forming pressure roller 16 rotates backward, and the negative pressure knife roller 17 rotates forward. The speeds of the front composite negative pressure transfer wheel 12, the transverse speed change device 13, the rear composite negative pressure transfer wheel 14, the composite roller 7, the ear band negative pressure transfer wheel 15, the forming pressure roller 16, the negative pressure knife roller 17, the front conveying structure 9, the middle conveying structure 10 and the rear conveying structure 11 are coordinated, and the front conveying structure 9 outputs the mask body 1 backward at equal intervals.

[0013] Preferably, a front auxiliary separation plate 27 is provided adjacent to and below the tangent point between the front compound negative pressure transfer wheel 12 and the transverse speed change device 13 in the embodiment of the present invention, and the lower portion of the front auxiliary separation plate 27 is fixed on the frame and is arranged vertically; a rear auxiliary separation plate 28 is provided adjacent to and above the tangent point between the rear compound negative pressure transfer wheel 14 and the transverse speed change device 13, and the upper portion of the rear auxiliary separation plate 28 is fixed on the frame and is arranged vertically.

[0014] Among them, the elastic band supply device in the embodiment of the present invention includes an unwinding structure, a tension adjustment structure and a correction structure arranged in sequence from front to back, and the correction structure is located above the front of the ear band forming device and a traction roller is provided therebetween.

[0015] Among them, the mask body production device in the embodiment of the present invention includes a surface layer supply structure, a filter layer supply structure, an inner layer supply structure, a multi-layer composite structure, a pleated structure, a hot pressing roller flattening structure, an ultrasonic embossing structure and a slitting structure. The surface layer supply structure, the filter layer supply structure and the inner layer supply structure are all located in front of the multi-layer composite structure and output the surface layer, the filter layer and the inner layer to the multi-layer composite structure respectively. The multi-layer composite structure, the pleated structure, the hot pressing roller flattening structure, the ultrasonic embossing structure and the slitting structure are arranged in sequence from front to back, and the front conveying structure 9 is output from the slitting structure to the rear.

[0016] Among them, the edge slitting device 21 in the embodiment of the present invention includes a front slitting negative pressure transfer wheel 22, a slitting negative pressure wheel 23, a slitting roller 24, a rear slitting negative pressure transfer wheel 25 and a discharge conveying structure 26, wherein the front slitting negative pressure transfer wheel 22 is located adjacent to the upper side of the rear end of the rear conveying structure 11, the slitting negative pressure wheel 23 is located on the rear side of the front slitting negative pressure transfer wheel 22 and is tangent to the front slitting negative pressure transfer wheel 22, the slitting roller 24 is located directly above the slitting negative pressure wheel 23 and forms a pair of roller structures with the slitting negative pressure wheel 23, the rear slitting negative pressure transfer wheel 25 is located on the rear side of the slitting negative pressure wheel 23 and is tangent to the slitting negative pressure wheel 23, the discharge conveying structure 26 is arranged in the front-to-back direction and its front end is located adjacent to the lower side of the rear slitting negative pressure transfer wheel 25, the slitting negative pressure wheel 23 is a negative pressure roller and is provided with a cutting unit for cutting the edge 2 between two adjacent masks.

[0017] Specifically, a plurality of adsorption holes are evenly distributed on the circumference of the front composite negative pressure transfer wheel 12 in the embodiment of the present invention, and a plurality of rectangular adsorption areas 30 are evenly spaced on the circumference of the rear composite negative pressure transfer wheel 14; the adsorption areas 30 are arranged in the left and right directions, and their sizes are matched with the mask body 1, and their positions are matched with the adsorption plate 29 of the transverse speed change device 13; the four sides of the adsorption plate 29 are provided with adsorption holes that match the mask body 1.

[0018] The beneficial effects of the technical solution provided by the embodiment of the present invention are as follows: the embodiment of the present invention provides a mask with ear straps and hemming and a preparation system thereof. The system changes the mask body from longitudinal to transverse through a transverse speed-changing device, and then simultaneously composites it with the transverse ear straps and two hemmings at the composite device, and finally cuts off the hemming between two adjacent masks to obtain the product. This patent draws on the transverse speed-changing device in the sanitary napkin production process, realizes the composite of the ear straps and the mask body in a specific direction, and has the advantages of fast production speed (greater than 200 pieces / minute) and high yield (greater than 99.9%). BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a schematic structural diagram of a mask with ear straps and hemming provided by an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Usage status diagram;

[0021] Figure 3 It is a partial structural schematic diagram of a system for preparing a mask with ear straps and hemming provided by an embodiment of the present invention;

[0022] Figure 4 It is a partial unfolded view of the composite roller;

[0023] Figure 5 It is a partial expanded view of the rear composite negative pressure transfer wheel.

[0024] In the figure: 1 mask body, 2 hemming, 3 ear straps, 4 separation line, 5 hanging hole, 6 composite conveyor belt, 7 composite roller, 8 hemming supply structure, 9 front conveying structure, 10 middle conveying structure, 11 rear conveying structure, 12 front composite negative pressure transfer wheel, 13 transverse speed change device, 14 rear composite negative pressure transfer wheel, 15 ear strap negative pressure transfer wheel, 16 forming roller, 17 negative pressure knife roller, 18 elastic belt, 19 adsorption unit, 20 welding convex pattern, 21 hemming slitting device, 22 front slitting negative pressure transfer wheel, 23 slitting negative pressure wheel, 24 slitting roller, 25 front slitting negative pressure transfer wheel, 26 discharge conveying structure, 27 front slitting negative pressure transfer wheel, 28 discharge conveying structure, 29 adsorption plate, 30 adsorption area. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] See also Figure 1 The embodiment of the present invention provides a mask with ear straps and hemming, including a rectangular mask body 1, two hemmings 2 on two wide sides of the mask body 1 (covering the wide sides of the mask body 1, specifically non-woven fabric), and 8-shaped ear straps 3. The ear straps 3 are arranged along the long side direction of the mask body 1, and both ends thereof are fixed on the hemmings 2 on the corresponding sides. A separation line 4 is arranged in the middle along the wide side direction of the mask body 1 to facilitate tearing the ear straps 3 into two ear straps, and two hanging holes 5 (specifically elliptical holes arranged along the long side direction of the mask body 1) are arranged on both sides of the separation line 4, which are elastic only along the long side direction of the mask body 1 (no elasticity along the wide side direction of the mask body 1). The two ends of the hemming 2 extend outward relative to the corresponding long sides of the mask body 1 (during processing, in order to ensure cutting, the mask body enters the hemming slitting device 21 at intervals to make the ends of the hemming 2 protrude).

[0028] Specifically, the ear strap 3 and the edging 2 in the embodiment of the present invention are both fixed to the mask body 1 by ultrasound. In this embodiment, the ear strap 3 and the edging 2 are ultrasonically welded at the same time. The separation line 4 is an ant line, which is obtained at the same time when the ear strap 3 is formed. The end of the edging 2 extends outward from the mask body 1 by a distance of 0.5-1.0 cm.

[0029] Example 2

[0030] See also Figure 2-5Embodiment 2 provides a system for preparing a mask with ear straps and hemming, which comprises a frame, a mask body production device at the front of the frame (used to prepare the mask body 1), a compounding device in the middle of the frame (used to realize the compounding of the mask body 1 and the hemming 2 in the prior art, and used to realize the compounding of the mask body 1, the hemming 2 and the ear strap 3 in this embodiment), and an hemming slitting device 21 at the rear of the frame (used to cut off the hemming 2 to obtain the product), etc. The mask body production structure outputs the mask body 1 in the front-to-back direction. Among them, the composite device includes a composite conveyor belt 6 arranged in the front-to-back direction, a composite roller 7 adjacent to and above the composite conveyor belt 6, an edge supply structure 8 above the composite conveyor belt 6 and located in front of the composite roller 7 (same as providing edge, including unwinding mechanism, tension adjustment mechanism and deviation correction mechanism, etc.), two ultrasonic welding structures on the left and right sides of the composite conveyor belt 6 and located adjacent to and below the composite roller 7 (corresponding to two edges 2 respectively) and two edge structures on the left and right sides of the composite conveyor belt 6 and located in front of the ultrasonic welding structure (used to guide the edge 2 and fold and wrap the corresponding sides of the mask body 1, etc., which are conventional structures), etc. The edge supply structure 8 outputs two edges 2 to the two edge structures respectively, and the rear end of the composite conveyor belt 6 is connected to the edge slitting device 21 through the rear conveying structure 11 in the front-to-back direction. The above structure is basically the same as the structure of the existing mask preparation system, except that: the preparation system in this embodiment also includes a front conveying structure 9 (specifically a double-layer belt conveying structure) on the frame, a middle conveying structure 10 (specifically a single-layer belt conveying structure), an elastic band supply device (for supplying an elastic band 18), an ear band forming device (for roller cutting to obtain an ear band 3), a front composite negative pressure transfer wheel 12 (for transferring the mask body 1), a horizontal speed change device 13 (for adjusting the vertical mask body 1 to a horizontal direction), a rear composite negative pressure transfer wheel 14 (for transferring the mask body 1) and an ear band negative pressure transfer wheel 15 (for transferring the ear band 3), etc. The front conveying structure 9 is arranged along the front-to-back direction and is outputted backward by the mask body production device. The front composite negative pressure transfer wheel 12 is located adjacent to and above the rear end of the front conveying structure 9, and is used to transfer the mask body 1 from the front conveying structure 9 to the transverse speed change device 13. The transverse speed change device 13 is located on the rear side of the front composite negative pressure transfer wheel 12 and is tangent to the front composite negative pressure transfer wheel 12 (the tangent in this embodiment means no contact but can realize the transfer of items, the same below). The rear composite negative pressure transfer wheel 14 is located on the rear side of the transverse speed change device 13 and is tangent to the transverse speed change device 13. A middle conveying structure 10 is provided between the lower side of the rear composite negative pressure transfer wheel 14 and the front end of the composite conveyor belt 6 along the front-to-back direction, and is used to realize the transfer of masks on the transverse speed change device 13 to the composite device.The arrangement of the front composite negative pressure transfer wheel 12, the variable speed device 13 and the rear composite negative pressure transfer wheel 14 can refer to the production of sanitary napkins, and the structure of the variable speed device 13 can refer to the descriptions of CN200610009328.5, CN2016106887499, CN201910373639.7, CN201920886441.4 and CN201920645058.X, etc. Among them, the ear band forming device includes a forming roller 16 (which can be driven up and down by a cylinder) and a negative pressure knife roller 17 arranged side by side, and the elastic band 18 output by the elastic band supply device is input forward between the negative pressure knife roller 17 and the forming roller 16. The ear band negative pressure transfer wheel 15 is located between the negative pressure knife roller 17 and the composite roller 7, and its front and rear sides are tangent to the composite roller 7 and the negative pressure knife roller 17 respectively. The negative pressure knife roller 17 is provided with a plurality of left and right cutting units that match the shape of the ear band 3 (a plurality of cutting units are arranged on the circumference of the negative pressure knife roller 17 at equal intervals, which is a conventional structure to obtain the ear band 3 of the corresponding shape), and the ear band negative pressure transfer wheel 15 is provided with a plurality of left and right adsorption units 19. The composite roller 7 is a negative pressure roller, on which a plurality of left and right adsorption units 19 are arranged (a plurality of adsorption units 19 are arranged on the circumference of the composite roller 7 at equal intervals), and two welding convex patterns 20 that match the ultrasonic welding structure are arranged on its circumference and at the ends of the adsorption units 19 (corresponding to the ultrasonic welding structure, which is a conventional structure for easy welding). The adsorption unit 19 is a plurality of adsorption holes arranged in the shape of the ear band 3 (such as arranged in an 8-shaped arrangement), and the welding convex pattern 20 is a circular ring structure coaxially arranged with the composite roller 7. The cutting unit on the negative pressure knife roller 17 cooperates with the adsorption unit 19 on the ear band negative pressure transfer wheel 15 to ensure that the ear band 3 on the negative pressure knife roller 17 can be transferred to the adsorption unit 19, and the adsorption unit 19 on the ear band negative pressure transfer wheel 15 cooperates with the adsorption unit 19 on the composite roller 7 to ensure that the ear band 3 on the ear band negative pressure transfer wheel 15 can be transferred to the adsorption unit 19 on the composite roller 7. When the adsorption plate 29 of the transverse speed change device 13 rotates to the front composite negative pressure transfer wheel 12, it is arranged vertically (arranged in the front and back direction) to achieve the handover of the mask body 1, and when it rotates to the rear composite negative pressure transfer wheel 14, it is arranged horizontally (arranged in the left and right direction) to achieve the handover of the mask body 1. The adsorption unit 19 on the composite roller 7 cooperates one by one with the mask body 1 on the composite conveyor belt 6 to achieve the welding of one ear band 3 for each mask body 1.

[0031] Specifically, see Figure 3 In the embodiment of the present invention, the rear composite negative pressure transfer wheel 14 is located in front of the edge wrapping structure, the ear band negative pressure transfer wheel 15 is located behind the composite roller 7, the negative pressure knife roller 17 is located behind the ear band negative pressure transfer wheel 15, the ear band negative pressure transfer wheel 15 and the ear band forming device are both located above the rear conveying structure 11 and in front of the edge wrapping and slitting device 21, and the elastic band supply device is located in front of the ear band forming device and a traction roller is provided therebetween.

[0032] Among them, see Figure 3 In the embodiment of the present invention, the front composite negative pressure transfer wheel 12 rotates forward, the transverse speed change device 13 rotates backward, the rear composite negative pressure transfer wheel 14 rotates forward, the composite roller 7 rotates forward, the ear band negative pressure transfer wheel 15 rotates backward, the forming pressure roller 16 rotates backward, and the negative pressure knife roller 17 rotates forward. The speeds of the front composite negative pressure transfer wheel 12, the transverse speed change device 13, the rear composite negative pressure transfer wheel 14, the composite roller 7, the ear band negative pressure transfer wheel 15, the forming pressure roller 16, the negative pressure knife roller 17, the front conveying structure 9, the middle conveying structure 10 and the rear conveying structure 11 are coordinated, and the front conveying structure 9 outputs the mask body 1 backward at equal intervals.

[0033] Preferably, see Figure 3 In the embodiment of the present invention, a front auxiliary separation plate 27 is provided adjacent to the lower part where the front composite negative pressure transfer wheel 12 and the transverse speed change device 13 are tangent to ensure that the mask body 1 can be well transferred to the transverse speed change device 13. The lower part of the front auxiliary separation plate 27 is fixed on the frame and is arranged vertically (and is located adjacent to the rear of the front composite negative pressure transfer wheel 12). A rear auxiliary separation plate 28 is provided adjacent to the upper part where the rear composite negative pressure transfer wheel 14 and the transverse speed change device 13 are tangent to ensure that the mask body 1 can be well transferred to the rear composite negative pressure transfer wheel 14. The upper part of the rear auxiliary separation plate 28 is fixed on the frame and is arranged vertically (and is located adjacent to the front of the rear composite negative pressure transfer wheel 14).

[0034] Among them, the elastic band supply device in the embodiment of the present invention includes an unwinding structure, a tension adjustment structure and a correction structure, which are arranged in sequence from front to back. The correction structure is located at the upper front of the ear band forming device and a traction roller is provided therebetween, which is consistent with conventional technology.

[0035] Among them, the mask body production device in the embodiment of the present invention includes a surface layer supply structure (for supplying the surface layer), a filter layer supply structure (for supplying the filter layer), an inner layer supply structure (for supplying the inner layer), a multi-layer composite structure (for achieving composite), a pleated structure (for pleating), a hot pressing roller flattening structure (for hot pressing and rolling the wrinkled mask body 1), an ultrasonic embossing structure (for ultrasonically embossing the front and rear ends of the mask body 1 for subsequent slitting) and a slitting structure (for cutting the front and rear intervals to obtain the mask body 1), etc. Among them, the surface layer supply structure, the filter layer supply structure and the inner layer supply structure are all located in front of the multi-layer composite structure and output the surface layer, the filter layer and the inner layer to the multi-layer composite structure respectively. The multi-layer composite structure, the pleated structure, the hot pressing roller flattening structure, the ultrasonic embossing structure and the slitting structure are arranged in sequence from front to back, and the front conveying structure 9 is output from the slitting structure to the back. Of course, this patent can also include other structures, such as a nose bridge strip supply structure, etc., which are conventional structures and are omitted in detail in this embodiment.

[0036] Among them, see Figure 3 The edge-cutting device 21 in the embodiment of the present invention includes a front slitting negative pressure transfer wheel 22 (rotating forward for transferring uncut products), a slitting negative pressure wheel 23 (rotating backward for cutting the edge 2, which is a conventional structure, and the left and right sides of its circumference are provided with cutters that match the cutting position), a slitting pressure roller 24 (cooperating with the slitting negative pressure wheel 23, and can be driven up and down by a gas cylinder), a rear slitting negative pressure transfer wheel 25 (rotating forward for transferring the cut products) and a discharging conveying structure 26 (for outputting products), etc. The front slitting negative pressure transfer wheel 22 is located at the rear end of the rear conveying structure 11. Adjacently above, the slitting negative pressure wheel 23 is located on the rear side of the front slitting negative pressure transfer wheel 22 and is tangent to the front slitting negative pressure transfer wheel 22, the slitting pressure roller 24 is located directly above the slitting negative pressure wheel 23 and forms a roller structure with the slitting negative pressure wheel 23, the rear slitting negative pressure transfer wheel 25 is located on the rear side of the slitting negative pressure wheel 23 and is tangent to the slitting negative pressure wheel 23, the discharging conveying structure 26 is arranged in the front-to-back direction and its front end is located adjacent to and below the rear slitting negative pressure transfer wheel 25, the slitting negative pressure wheel 23 is a negative pressure roller and is provided with a cutting unit (multiple cutters arranged at intervals) for cutting off the edge 2 between two adjacent masks.

[0037] Specifically, see Figure 4 and 5 In the embodiment of the present invention, a plurality of adsorption holes are evenly distributed on the circumference of the front composite negative pressure transfer wheel 12, and a plurality of rectangular adsorption areas 30 are evenly spaced on the circumference of the rear composite negative pressure transfer wheel 14 to ensure that the mask body 1 is spaced to the composite roller 7 to improve the yield rate. The adsorption area 30 is arranged in the left and right directions, and its size matches the mask body 1, and its position matches the adsorption plate 29 of the transverse speed change device 13. Adsorption holes that match the mask body 1 are provided on the four sides of the adsorption plate 29 to facilitate the rapid separation of the mask body 1 (all four sides are ultrasonically welded). A plurality of adsorption holes are evenly distributed on the circumference of the front slitting negative pressure transfer wheel 22, the slitting negative pressure wheel 23 and the rear slitting negative pressure transfer wheel 25.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for preparing a mask with ear straps and hemming, comprising a frame, a mask body production device at the front of the frame, a composite device in the middle of the frame, and an hemming slitting device (21) at the rear of the frame, wherein the mask body production structure outputs the mask body (1) backward along the front-back direction, the composite device comprises a composite conveyor belt (6) arranged along the front-back direction, a composite roller (7) adjacent to and above the composite conveyor belt (6), an hemming supply structure (8) above the composite conveyor belt (6) and located in front of the composite roller (7), two ultrasonic welding structures on the left and right sides of the composite conveyor belt (6) and located adjacent to and below the composite roller (7), and two hemming structures on the left and right sides of the composite conveyor belt (6) and located in front of the ultrasonic welding structure, the hemming supply structure (8) outputs two hemmings (2) to the two hemming structures respectively, and the rear end of the composite conveyor belt (6) is connected to the hemming slitting device (21) through a rear conveying structure (11) in the front-back direction; characterized in that The preparation system further comprises a front conveying structure (9), a middle conveying structure (10), an elastic band supply device, an ear band forming device, a front composite negative pressure transfer wheel (12), a horizontal speed change device (13), a rear composite negative pressure transfer wheel (14) and an ear band negative pressure transfer wheel (15) on a frame, wherein the front conveying structure (9) is arranged in a front-to-back direction and is outputted backward from a mask body production device, the front composite negative pressure transfer wheel (12) is located adjacent to and above the rear end of the front conveying structure (9), and the horizontal speed change device (13) is located at the rear side of the front composite negative pressure transfer wheel (12) and is tangent to the front composite negative pressure transfer wheel (12). The rear composite negative pressure transfer wheel (14) is located at the rear side of the transverse speed change device (13) and is tangent to the transverse speed change device (13); a middle conveying structure (10) is provided between the lower side of the rear composite negative pressure transfer wheel (14) and the front end of the composite conveyor belt (6) in the front-to-back direction; the ear band forming device comprises a forming pressure roller (16) and a negative pressure knife roller (17) arranged side by side in the upper and lower directions; the elastic band (18) output by the elastic band supply device is input forward from between the negative pressure knife roller (17) and the forming pressure roller (16); the ear band negative pressure transfer wheel (15) is located between the negative pressure knife roller (17) and the composite roller (7) and its front side is The rear two sides are tangent to the composite roller (7) and the negative pressure knife roller (17) respectively; the negative pressure knife roller (17) is provided with a plurality of left-right cutting units that match the shape of the ear strap (3); the ear strap negative pressure transfer wheel (15) is provided with a plurality of left-right adsorption units (19); the composite roller (7) is a negative pressure roller, on which a plurality of left-right adsorption units (19) are provided, and two welding convex patterns (20) that match the ultrasonic welding structure are provided on the circumferential surface and at the ends of the adsorption units (19); the adsorption units (19) are a plurality of adsorption holes arranged in the shape of the ear strap (3), and the welding convex patterns (20) are provided in the shape of the composite roller (7). The composite roller (7) is coaxially arranged with a circular ring structure; the cutting unit on the negative pressure knife roller (17) cooperates with the adsorption unit (19) on the ear band negative pressure transfer wheel (15), and the adsorption unit (19) on the ear band negative pressure transfer wheel (15) cooperates with the adsorption unit (19) on the composite roller (7); when the adsorption plate (29) of the transverse speed change device (13) rotates to the front composite negative pressure transfer wheel (12), it is arranged vertically, and when it rotates to the rear composite negative pressure transfer wheel (14), it is arranged horizontally; the adsorption unit (19) on the composite roller (7) cooperates one by one with the mask body (1) on the composite conveyor belt (6); The front composite negative pressure transfer wheel (12) rotates forward, the transverse speed change device (13) rotates backward, the rear composite negative pressure transfer wheel (14) rotates forward, the composite roller (7) rotates forward, the ear band negative pressure transfer wheel (15) rotates backward, the forming pressure roller (16) rotates backward, and the negative pressure knife roller (17) rotates forward. The speeds of the front composite negative pressure transfer wheel (12), the transverse speed change device (13), the rear composite negative pressure transfer wheel (14), the composite roller (7), the ear band negative pressure transfer wheel (15), the forming pressure roller (16), the negative pressure knife roller (17), the front conveying structure (9), the middle conveying structure (10) and the rear conveying structure (11) are coordinated, and the front conveying structure (9) outputs the mask body (1) backward at equal intervals. The rear composite negative pressure transfer wheel (14) is located in front of the edge wrapping structure, the ear band negative pressure transfer wheel (15) is located behind the composite roller (7), the negative pressure knife roller (17) is located behind the ear band negative pressure transfer wheel (15), the ear band negative pressure transfer wheel (15) and the ear band forming device are both located above the rear conveying structure (11) and in front of the edge wrapping and slitting device (21), and the elastic band supply device is located in front of and above the ear band forming device, and a traction roller is provided therebetween.

2. The system for preparing a mask with ear straps and hemming according to claim 1, characterized in that: A front auxiliary separation plate (27) is provided adjacent to and below the tangent point between the front compound negative pressure transfer wheel (12) and the transverse speed change device (13), and the lower part of the front auxiliary separation plate (27) is fixed on the frame and is arranged vertically; a rear auxiliary separation plate (28) is provided adjacent to and above the tangent point between the rear compound negative pressure transfer wheel (14) and the transverse speed change device (13), and the upper part of the rear auxiliary separation plate (28) is fixed on the frame and is arranged vertically.

3. The system for preparing a mask with ear straps and hemming according to claim 1, characterized in that: The elastic band supply device comprises an unwinding structure, a tension adjustment structure and a deviation correction structure which are arranged in sequence from front to back. The deviation correction structure is located above and in front of the ear band forming device and a traction roller is arranged therebetween.

4. The system for preparing a mask with ear straps and hemming according to claim 1, characterized in that: The mask body production device comprises a surface layer supply structure, a filter layer supply structure, an inner layer supply structure, a multi-layer composite structure, a pleated structure, a hot pressing roller flattening structure, an ultrasonic embossing structure and a slitting structure. The surface layer supply structure, the filter layer supply structure and the inner layer supply structure are all located in front of the multi-layer composite structure and output the surface layer, the filter layer and the inner layer to the multi-layer composite structure respectively. The multi-layer composite structure, the pleated structure, the hot pressing roller flattening structure, the ultrasonic embossing structure and the slitting structure are arranged in sequence from front to back, and the front conveying structure (9) outputs from the slitting structure to the rear.

5. The system for preparing a mask with ear straps and hemming according to claim 1, characterized in that: The hemming and slitting device (21) comprises a front slitting negative pressure transfer wheel (22), a slitting negative pressure wheel (23), a slitting pressure roller (24), a rear slitting negative pressure transfer wheel (25) and a discharge conveying structure (26), wherein the front slitting negative pressure transfer wheel (22) is located adjacent to and above the rear end of the rear conveying structure (11), the slitting negative pressure wheel (23) is located at the rear side of the front slitting negative pressure transfer wheel (22) and is tangent to the front slitting negative pressure transfer wheel (22), and the slitting pressure roller (24) is located adjacent to and above the rear end of the rear conveying structure (11). The negative pressure wheel (23) is located directly above the negative pressure wheel (23) and forms a roller structure with the negative pressure wheel (23); the rear negative pressure transfer wheel (25) is located on the rear side of the negative pressure wheel (23) and is tangent to the negative pressure wheel (23); the discharge conveying structure (26) is arranged in the front-to-back direction and its front end is located adjacent to and below the negative pressure transfer wheel (25); the negative pressure wheel (23) is a negative pressure roller and is provided with a cutting unit for cutting the hemming (2) between two adjacent masks.

6. The system for preparing a mask with ear straps and hemming according to claim 1, characterized in that: A plurality of adsorption holes are evenly distributed on the circumference of the front composite negative pressure transfer wheel (12), and a plurality of rectangular adsorption areas (30) are evenly spaced on the circumference of the rear composite negative pressure transfer wheel (14); the adsorption areas (30) are arranged in the left and right directions, and their sizes match the mask body (1), and their positions match the adsorption plates (29) of the transverse speed change device (13); and adsorption holes matching the mask body (1) are provided on the four sides of the adsorption plate (29).

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