CN219021939U - Rubber band fixing equipment for disposable sanitary products - Google Patents

Abstract

The utility model relates to the technical field of disposable sanitary articles, in particular to an elastic band fixing device for disposable sanitary articles, which is characterized in that: including outer non-woven fabrics unreels the device, outer non-woven fabrics feed arrangement, inlayer non-woven fabrics unreels the device, inlayer non-woven fabrics feed arrangement, rubber band unreels the device, rubber band feed arrangement, S rubber band applys the device, S rubber band spouts the device, compound draw gear and ultrasonic welding device, rubber band feed arrangement includes waistline rubber band traction wheel and S rubber band traction wheel, rubber band unreels the device and divides two ways to unreel, wherein regard S rubber band and another way as waistline rubber band one way, S rubber band applys the device and be two and symmetry setting. The utility model has good overall practicability, and can fix the S-shaped rubber band while realizing the fixation of the waistline rubber band.

Description

Rubber band fixing equipment for disposable sanitary products

Technical Field

The utility model relates to the technical field of disposable sanitary products, in particular to rubber band fixing equipment for disposable sanitary products.

Background

At present, in disposable sanitary products such as menstrual trousers, pull-up trousers and the like, in order to ensure elasticity and use stability, a plurality of elastic telescopic parts are arranged, such as elastic waistlines for fixing, and in order to make the manufactured elastic waistlines soft to a little so as to improve hand feeling and reduce peculiar smell of rubber, an inner layer non-woven fabric and an outer layer non-woven fabric are welded together in an ultrasonic welding mode, and a plurality of elastic band channels capable of clamping waistlines are formed between the inner layer non-woven fabric and the outer layer non-woven fabric, so that the waistlines are fixed, such as a paper diaper waistline rubber molding device with an authorized publication number of CN110623794B, and a method for fixing a non-rubber band is provided, such as an authorized publication number of CN109157333B, so that tight wrapping of leg circumferences is realized to better play a leakage-proof effect, an S-shaped rubber band is usually arranged at leg circumferences in the existing disposable sanitary products, however, the existing equipment for fixing the waistlines through ultrasonic welding cannot meet the fixing requirement of the S-shaped rubber band at the same time, and needs of further improvement are needed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the elastic fixing equipment for the disposable sanitary article, which has good overall practicability, can fix the waistline elastic and can meet the requirement of fixing the S-shaped elastic.

In order to solve the technical problems, the utility model adopts the following technical scheme: an elastic fixing device for disposable sanitary products comprises an outer layer non-woven fabric unreeling device, an outer layer non-woven fabric feeding device, an inner layer non-woven fabric unreeling device, an inner layer non-woven fabric feeding device, an elastic unreeling device, an elastic feeding device, an S elastic applying device, an S elastic spraying device, a composite traction device and an ultrasonic welding device, wherein the outer layer non-woven fabric feeding device is used for conveying the outer layer non-woven fabric unreeled on the outer layer non-woven fabric unreeling device to the composite traction device, the inner layer non-woven fabric feeding device is used for conveying the inner layer non-woven fabric unreeled on the inner layer non-woven fabric unreeling device to the composite traction device, the elastic feeding device comprises a waistline elastic traction wheel and an S elastic traction wheel, the elastic unreeling device is unreeled in two ways, one of them is as S rubber band and another way is as waistline rubber band, waistline rubber band traction wheel is used for carrying waistline rubber band to compound draw gear department, S rubber band traction wheel is used for carrying S rubber band to compound draw gear department through S rubber band applying device, S rubber band applying device is two and symmetry setting, S rubber band spouts the mucilage binding and locates the direction of delivery of outer non-woven fabrics and is located outer non-woven fabrics feed arrangement rear and be used for spouting the gum to outer non-woven fabrics in order to fix S rubber band, compound draw gear is used for carrying out the compound and carrying out ultrasonic welding device department with outer non-woven fabrics, waistline rubber band, S rubber band and inlayer non-woven fabrics, ultrasonic welding device is used for carrying out welded bond in order to fix waistline rubber band between outer non-woven fabrics and the inlayer non-woven fabrics.

Further, the outer non-woven fabric feeding device comprises an outer non-woven fabric tension controller, a first outer non-woven fabric traction wheel, an outer non-woven fabric deviation corrector and a second outer non-woven fabric traction wheel which are sequentially arranged along the conveying direction of the outer non-woven fabric.

Further, inlayer non-woven fabrics feed arrangement includes inlayer non-woven fabrics tension controller, first inlayer non-woven fabrics traction wheel, first inlayer non-woven fabrics deviation rectifier and the inlayer non-woven fabrics traction wheel that sets gradually along inlayer non-woven fabrics direction of delivery.

Further, the inner layer non-woven fabric feeding device further comprises a second inner layer non-woven fabric deviation rectifying device and a third inner layer non-woven fabric traction wheel which are sequentially arranged along the conveying direction of the inner layer non-woven fabric and positioned behind the second inner layer non-woven fabric traction wheel.

Further, still include waistline rubber band and spout the mucilage binding and put, waistline rubber band spouts the mucilage binding and put and locate the direction of delivery of inlayer non-woven fabrics and be located inlayer non-woven fabrics feed arrangement rear and be used for spouting the mucilage binding in succession to the inlayer non-woven fabrics in order to advance the location to waistline rubber band.

Furthermore, the S-rubber band glue spraying device is used for intermittently spraying glue to the outer layer non-woven fabric.

Further, ultrasonic welding device includes supersonic generator and welding backing roll, is equipped with on the supersonic generator with welding backing roll matched with ultrasonic bonding head, and the rotatable installation of welding backing roll is on the mount pad, and mount pad one side is equipped with and is used for driving welding backing roll to carry out pivoted welding actuating mechanism, and supersonic generator and mount pad all locate in the frame.

Further, the welding backing roll includes the welding axle, and the epaxial fixed first traction roll that is equipped with in proper order of welding, preceding waistline roller, second traction roll, back waistline roller and first traction roll, supersonic generator be two and respectively with preceding waistline roller and back waistline roller corresponding, the surface of preceding waistline roller and back waistline roller all is equipped with the multirow welded zone along the fixed axial that is equipped with of welding backing roll, is equipped with the solder joint that a plurality of intervals set up along the circumferencial direction of welding backing roll on the welded zone, is equipped with the notch that is used for holding waistline rubber band in the middle of the solder joint.

Further, the welding driving mechanism comprises a welding driving motor, a speed reducer and a coupler, the welding driving motor is arranged on the speed reducer, a motor shaft of the welding driving motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with one end of the welding bottom roller through the coupler, and the speed reducer is fixedly arranged on the mounting seat through a connecting flange.

Further, S rubber band applying device includes the mounting bracket, apply driving motor, synchronizing wheel, the drive belt, the slide rail, slider and wire guide, apply driving motor and be two and interval fixed mounting on the mounting bracket and make and apply driving motor' S motor shaft setting down, equal fixed mounting has the synchronizing wheel on two motor shafts of applying driving motor, connect through the drive belt transmission between two synchronizing wheels, slider fixed connection is on the drive belt, slide rail fixed mounting is on the mounting bracket, slider and slide rail sliding fit, wire guide fixed mounting is on the slider.

According to the elastic fixing device for the disposable sanitary article, disclosed by the utility model, the elastic unreeling device is used for unreeling two paths, one path is used as the S elastic and driven by the S elastic applying device, and is simultaneously matched with the forward conveying of the outer layer non-woven fabric, so that the S elastic can go out of an S curve effect on the outer layer non-woven fabric, and the S elastic is sprayed to the outer layer non-woven fabric through the S elastic spraying device, so that the corresponding adhesive fixing effect can be achieved on the S elastic, and the other path is used as the waistline elastic, after the elastic is conveyed to the composite traction device, the composite traction device can be used for compositing the outer layer non-woven fabric, the waistline elastic, the S elastic and the inner layer non-woven fabric, and then the outer layer non-woven fabric and the inner layer non-woven fabric can be welded and bonded through the arrangement of the ultrasonic welding device, so that the waistline elastic can be fixed, and the adhesive fixing of the S elastic can be met at the same time, so that the elastic fixing device is better in flexibility and practicability.

Drawings

Fig. 1 is a schematic structural view of an elastic fixing device for disposable hygienic products according to the present utility model.

Fig. 2 is an enlarged partial schematic view at a in fig. 1.

Fig. 3 is a schematic structural view of an ultrasonic welding apparatus.

Fig. 4 is a schematic view of the structure of the welding bottom roller when it is mounted on the mounting base.

FIG. 5 is a schematic view of the structure of the welding spot and the notch.

Fig. 6 is a schematic structural view of the S-rubber band applying device.

Fig. 7 is a schematic view of the position fixing of waist elastic and S-elastic on a disposable sanitary article.

In the figure: 11-an outer layer non-woven fabric unreeling device; 111-outer layer non-woven fabrics; 12-an inner layer non-woven fabric unreeling device; 121-an inner layer non-woven fabric; 13-an elastic band unreeling device; 131-waistline rubber band; 132-S rubber band; 21-an outer layer non-woven fabric tension controller; 22-a first outer layer non-woven traction wheel; 23-an outer layer non-woven fabric deviation corrector; 24-a second outer layer non-woven fabric traction wheel; 31-an inner layer non-woven fabric tension controller; 32-a first inner layer non-woven traction wheel; 33-a first inner layer non-woven fabric deviation corrector; 34-a second inner layer non-woven traction wheel; 35-a second inner layer non-woven fabric deviation corrector; 36-a third inner layer non-woven fabric traction wheel; 41-waistline rubber traction wheels; 42-S rubber band traction wheels; 5-S rubber band applying device; 51-mounting rack; 52-applying a drive motor; 53-synchronizing wheel; 54-a transmission belt; 55-sliding rails; 56-a slider; 57-wire guide plates; 61-S rubber band spraying device; 62-waistline rubber band spraying device; 7-a compound traction device; 8-an ultrasonic welding device; 81-an ultrasonic generator; 811-an ultrasonic horn; 82-welding a bottom roller; 821-welding a shaft; 822-a first pull roll; 823-front waistline roller; 824-a second pull roll; 825-rear waistline roller; 826-welding spot; 827-slots; 83-mount; 84-welding a driving mechanism; 841-welding drive motor; 842-a speed reducer; 843-coupling; 844-connecting flanges; 85-frame.

Detailed Description

The utility model is further described below by means of specific embodiments.

As shown in fig. 1 to 7, the elastic fixing device for disposable sanitary products according to the present utility model comprises an outer non-woven fabric unreeling device 11, an outer non-woven fabric 111 feeding device, an inner non-woven fabric unreeling device 12, an inner non-woven fabric 121 feeding device, an elastic unreeling device 13, an elastic feeding device, an S elastic applying device 5, an S elastic spraying device 61, a composite traction device 7 and an ultrasonic welding device 8, wherein the outer non-woven fabric 111 feeding device is used for conveying the outer non-woven fabric 111 unreeled on the outer non-woven fabric unreeling device 11 to the composite traction device 7, the inner non-woven fabric 121 feeding device is used for conveying the inner non-woven fabric 121 unreeled on the inner non-woven fabric unreeled 12 to the composite traction device 7, the elastic feeding device comprises a waistline elastic traction wheel 41 and an S elastic traction wheel 42, the elastic unreeling device 13 is unreeled in two ways, one way is used as an S elastic 132 and the other way is used as a waistline elastic 131, the waistline elastic traction wheel 41 is used for conveying the waistline elastic 131 to the position of the composite traction device 7, the S elastic traction wheel 42 is used for conveying the S elastic 132 to the position of the composite traction device 7 through the S elastic applying device 5, the two S elastic applying devices 5 are symmetrically arranged, the S elastic spraying device 61 is arranged in the conveying direction of the outer non-woven fabric 111 and is positioned behind the feeding device of the outer non-woven fabric 111 and is used for spraying rubber to the outer non-woven fabric 111 so as to fix the S elastic 132, and the composite traction device 7 is used for conveying the outer non-woven fabric 111, the waistline elastic 131, the S elastic applying device 5 is symmetrically arranged The S-elastic band 132 and the inner-layer non-woven fabric 121 are combined and conveyed to the ultrasonic welding device 8, and the ultrasonic welding device 8 is used for welding and bonding the outer-layer non-woven fabric 111 and the inner-layer non-woven fabric 121 to fix the waistline elastic band 131.

By enabling the elastic unreeling device 13 to unreel in two ways, one way is used as an S elastic 132 and is driven by the S elastic applying device 5, and meanwhile, the S elastic 132 is matched with the forward conveying of the outer non-woven fabric 111, so that the S elastic 132 is enabled to go out of an S curve effect on the outer non-woven fabric 111, and the S elastic is used for spraying glue on the outer non-woven fabric 111 through the S elastic spraying device 61, so that the S elastic 132 can be correspondingly adhered and fixed, and the other way is used as a waistline elastic 131 and is conveyed to the position of the composite traction device 7, the composite traction device 7 can be used for compounding the outer non-woven fabric 111 with the waistline elastic 131, and then, through the arrangement of the ultrasonic welding device 8, the outer non-woven fabric 111 and the inner non-woven fabric 121 can be welded and bonded, thereby realizing the non-glue fixing of the waistline elastic 131, and enabling the practical fixing device to realize the non-glue fixing of the S elastic 131 while realizing the non-glue fixing of the elastic 131.

In addition, the outer layer nonwoven fabric unreeling device 11, the inner layer nonwoven fabric unreeling device 12, the elastic ribbon unreeling device 13, the waistline elastic ribbon traction wheel 41, the S elastic ribbon traction wheel 42, the S elastic ribbon glue spraying device 61 and the composite traction device 7 can all adopt the structures in the prior art, so that the structure and principle thereof are not repeated here.

As shown in fig. 1 and fig. 2, specifically, the feeding device for the outer nonwoven fabric 111 includes an outer nonwoven fabric tension controller 21, a first outer nonwoven fabric traction wheel 22, an outer nonwoven fabric deviation corrector 23 and a second outer nonwoven fabric traction wheel 24, which are sequentially arranged along the conveying direction of the outer nonwoven fabric 111, where the outer nonwoven fabric tension controller 21 is used for playing a corresponding tension control role for the outer nonwoven fabric 111, the outer nonwoven fabric deviation corrector 23 is used for playing a corresponding deviation correcting role for the outer nonwoven fabric 111, the first outer nonwoven fabric traction wheel 22 and the second outer nonwoven fabric traction wheel 24 are used for playing a corresponding traction role for the outer nonwoven fabric 111, and in addition, the outer nonwoven fabric tension controller 21, the first outer nonwoven fabric traction wheel 22, the outer nonwoven fabric deviation corrector 23 and the second outer nonwoven fabric traction wheel 24 can all adopt structures in the prior art, so that the structures and principles thereof will not be repeated herein.

As shown in fig. 1 and fig. 2, specifically, the feeding device for the inner-layer non-woven fabric 121 includes an inner-layer non-woven fabric tension controller 31, a first inner-layer non-woven fabric traction wheel 32, a first inner-layer non-woven fabric deviation corrector 33 and a second inner-layer non-woven fabric traction wheel 34 which are sequentially arranged along the conveying direction of the inner-layer non-woven fabric 121, and a second inner-layer non-woven fabric deviation corrector 35 and a third inner-layer non-woven fabric traction wheel 36 which are sequentially arranged along the conveying direction of the inner-layer non-woven fabric 121 and are positioned behind the second inner-layer non-woven fabric traction wheel 34, the inner-layer non-woven fabric tension controller 31 is used for playing a corresponding tension control role on the inner-layer non-woven fabric 121, the first inner-layer non-woven fabric deviation corrector 33 and the second inner-layer non-woven fabric deviation corrector 35 are all used for playing a corresponding deviation correcting role on the inner-layer non-woven fabric 121, the first inner-woven fabric traction wheel 32, the second inner-layer non-woven fabric traction wheel 34 and the third inner-layer non-woven fabric traction wheel 36 are all used for playing a corresponding deviation correcting role on the inner-layer non-woven fabric 121, and the other than the first inner-woven fabric non-woven fabric traction wheel 31, the second non-woven fabric traction wheel 33 and the second non-woven fabric traction wheel 35 can be in the existing structure.

As shown in fig. 2, in addition, this elastic fixing device further includes a waistline elastic spraying device 62, the waistline elastic spraying device 62 is disposed in the conveying direction of the inner layer non-woven fabric 121 and is located behind the feeding device of the inner layer non-woven fabric 121 and is used for continuously spraying the rubber to the inner layer non-woven fabric 121 so as to pre-locate the waistline elastic 131, by adopting this structure, the waistline elastic spraying device 62 can spray a little rubber to the inner layer non-woven fabric 121, and on the premise that the subsequent waistline hardness and the peculiar smell are not affected as much as possible, the waistline elastic 131 can be slightly adhered first, so that the waistline elastic 131 is effectively prevented from deviating, and the subsequent welding and bonding between the outer layer non-woven fabric 111 and the inner layer non-woven fabric 121 by the ultrasonic welding device 8 are facilitated, so that the waistline elastic 131 can be smoothly fixed.

In addition, the S-rubber-band spraying device 61 is configured to intermittently spray the rubber on the outer-layer non-woven fabric 111, and the plurality of rubber-outlet modules on the S-rubber-band spraying device 61 are respectively controlled and intermittently spray the rubber, and simultaneously, the S-rubber-band spraying device 61 is matched with forward conveying of the outer-layer non-woven fabric 111, so that the rubber sprayed on the outer-layer non-woven fabric 111 has an S-curve effect, and thus, on the premise of stably adhering and fixing the S-rubber band 132, the overall rubber-spraying amount can be reduced.

As shown in fig. 2 and 3, specifically, the ultrasonic welding device 8 includes an ultrasonic generator 81 and a welding bottom roller 82, an ultrasonic welding head 811 matched with the welding bottom roller 82 is disposed on the ultrasonic generator 81, the welding bottom roller 82 is rotatably mounted on an installation seat 83, a welding driving mechanism 84 for driving the welding bottom roller 82 to rotate is disposed on one side of the installation seat 83, and both the ultrasonic generator 81 and the installation seat 83 are disposed on a frame 85.

As shown in fig. 4, 5 and 7, specifically, the welding bottom roller 82 includes a welding shaft 821, a first traction roller 822, a front waistline roller 823, a second traction roller 824, a rear waistline roller 825 and the first traction roller 822 are sequentially fixed on the welding shaft 821, two ultrasonic generators 81 respectively correspond to the front waistline roller 823 and the rear waistline roller 825, multiple rows of welding areas are fixedly arranged on the outer surfaces of the front waistline roller 823 and the rear waistline roller 825 along the axial direction of the welding bottom roller 82, a plurality of welding spots 826 are arranged on the welding areas along the circumferential direction of the welding bottom roller 82 at intervals, a notch 827 for accommodating the waistline rubber 131 is arranged in the middle of the welding spots 826, and when the composite material of the inner layer non-woven fabric 121, the waistline rubber 131, the S rubber 132 and the outer layer non-woven fabric 111 is conveyed between the ultrasonic welding head 811 and the welding bottom roller 82, the waist elastic 131 is stretched during laying, the waist elastic 131 can be clamped in the notch 827 during ultrasonic welding, when the ultrasonic welding head 811 is contacted with the welding points 826 on the welding bottom roller 82, the ultrasonic welding head 811 can weld the inner non-woven fabric 121 and the outer non-woven fabric 111 which are positioned at two sides of the notch 827 together, thereby a plurality of elastic channels which can clamp the waist elastic 131 can be formed between the inner non-woven fabric 121 and the outer non-woven fabric 111, the diameter of the elastic channels is slightly smaller than the original diameter of the waist elastic 131, after the waist elastic 131 is cut into waistlines with corresponding lengths, the waist elastic 131 can retract under the action of the elastic force and gradually returns to the original thickness, the waist elastic 131 can be firmly clamped in the elastic channels after the waist elastic 131 is retracted, and the waist elastic 131 can be conveniently fixed, in addition, through the arrangement of the front waistline roller 823 and the back waistline roller 825, the welding of the front waistline and the back waistline of the disposable sanitary article can be realized simultaneously by matching the two ultrasonic generators 81, thereby realizing the fixation of the waistline rubber 131 in the front waistline and the back waistline, in addition, as the S rubber 132 is arranged in the area between the front waistline and the back waistline, the two ends of the S rubber 132 extend into the front waistline or the back waistline, thereby the fixation of the two ends of the S rubber 132 is more stable, meanwhile, as the two ends of the S rubber 132 can be overlapped with the waistline rubber 131, the outer diameter of the welding spots 826 in the corresponding areas on the front waistline roller 823 and the back waistline roller 825 can be set larger than the outer diameter of the welding spots 826 in the other areas, so that the corresponding areas overlapping the two ends of the S rubber 132 in the front waistline and the back waistline of the disposable sanitary article are welded more firmly, thereby the S rubber 132 is easy to reduce, and the lateral tension of the S rubber 131 is not influenced by the waistline 131.

As shown in fig. 3, specifically, the welding driving mechanism 84 includes a welding driving motor 841, a speed reducer 842 and a coupling 843, the welding driving motor 841 is mounted on the speed reducer 842, and a motor shaft of the welding driving motor 841 is in transmission connection with an input end of the speed reducer 842, an output end of the speed reducer 842 is in transmission connection with one end of the welding bottom roller 82 through the coupling 843, the speed reducer 842 is fixedly mounted on the mounting seat 83 through a connecting flange 844, preferably, the welding driving motor 841 can adopt a servo motor, and by adopting this structure, the welding bottom roller 82 is conveniently driven to rotate.

As shown in fig. 2 and 6, specifically, the S-rubber band applying device 5 includes a mounting frame 51, an applying driving motor 52, a synchronizing wheel 53, a driving belt 54, a sliding rail 55, a sliding block 56 and a wire guide plate 57, where the applying driving motor 52 is two and fixed on the mounting frame 51 at intervals and the motor shaft of the applying driving motor 52 is disposed downward, the synchronizing wheel 53 is fixed on the motor shaft of the two applying driving motors 52, the two synchronizing wheels 53 are in transmission connection with each other through the driving belt 54, the sliding block 56 is fixedly connected to the driving belt 54, the sliding rail 55 is fixedly mounted on the mounting frame 51, the sliding block 56 is in sliding fit with the sliding rail 55, and the wire guide plate 57 is fixedly mounted on the sliding block 56, so that the sliding block 56 can be driven by the driving belt 54 to move back and forth, the wire guide plate 57 can be driven to move back and forth, and the S-rubber band 132 passes through the wire guide plate 57, the wire guide plate 57 can be driven by the driving motor to move back and forth, and the outer layer 111 can be smoothly moved by the sliding block 55, and the outer layer of the non-woven fabric can be driven by the sliding block 56 is further, and the outer layer 111 can be driven by the sliding motion of the sliding plate 55, and the outer layer can be driven by the sliding plate 111 when the sliding plate is more smoothly, and the outer layer is driven by the sliding plate 111.

The foregoing is merely a few specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the concept should be construed as infringement of the protection scope of the present utility model.

Claims (10)

1. An elastic fixing device for disposable sanitary products, characterized in that: including outer non-woven fabrics unreels device, outer non-woven fabrics feed arrangement, inlayer non-woven fabrics unreels device, inlayer non-woven fabrics feed arrangement, rubber band unreels device, rubber band feed arrangement, S rubber band applying device, S rubber band spouts the device, compound draw gear and ultrasonic welding device, outer non-woven fabrics feed arrangement be used for with the outer non-woven fabrics of unreeling on the outer non-woven fabrics unreels device carry to compound draw gear department, inlayer non-woven fabrics feed arrangement be used for with the inlayer non-woven fabrics is unreeled on the device and is carried to compound draw gear department, rubber band feed arrangement includes waistline rubber band traction wheel and S rubber band traction wheel, rubber band unreels device divide two ways to unreels, and one of them is regarded as waistline rubber band and another way, waistline rubber band traction wheel is used for with waistline rubber band carries to compound draw gear department, S rubber band traction wheel is used for with S rubber band applying device carries to compound draw gear department, S rubber band applying device is for S rubber band is located, S rubber band applying device is for two and is symmetrical to carry out S rubber band is put to carry out the outer non-woven fabrics of being used for carrying out the non-woven fabrics of outer non-woven fabrics of being welded to the outer non-woven fabrics of being used for carrying out the outer side welding device.

2. An elastic fastening device for disposable sanitary products according to claim 1, wherein: the outer non-woven fabric feeding device comprises an outer non-woven fabric tension controller, a first outer non-woven fabric traction wheel, an outer non-woven fabric deviation corrector and a second outer non-woven fabric traction wheel which are sequentially arranged along the conveying direction of the outer non-woven fabric.

3. An elastic fastening device for disposable sanitary products according to claim 1, wherein: the inner layer non-woven fabric feeding device comprises an inner layer non-woven fabric tension controller, a first inner layer non-woven fabric traction wheel, a first inner layer non-woven fabric deviation corrector and a second inner layer non-woven fabric traction wheel which are sequentially arranged along the conveying direction of the inner layer non-woven fabric.

4. A rubber band fastening device for disposable sanitary products according to claim 3, characterized in that: the inner layer non-woven fabric feeding device further comprises a second inner layer non-woven fabric deviation rectifying device and a third inner layer non-woven fabric traction wheel which are sequentially arranged along the conveying direction of the inner layer non-woven fabric and positioned behind the second inner layer non-woven fabric traction wheel.

5. An elastic fastening device for disposable sanitary products according to claim 1, wherein: still include waistline rubber band and spout the mucilage binding and put, waistline rubber band spouts mucilage binding and put and locates on the direction of delivery of inlayer non-woven fabrics and be located inlayer non-woven fabrics feed arrangement rear just is used for right the inlayer non-woven fabrics carries out continuous spouting and glues in order to advance the location to waistline rubber band.

6. An elastic fastening device for disposable sanitary products according to claim 1, wherein: the S rubber band glue spraying device is used for intermittently spraying glue to the outer layer non-woven fabric.

7. An elastic fastening device for disposable sanitary products according to claim 1, wherein: the ultrasonic welding device comprises an ultrasonic generator and a welding bottom roller, an ultrasonic welding head matched with the welding bottom roller is arranged on the ultrasonic generator, the welding bottom roller is rotatably arranged on an installation seat, a welding driving mechanism used for driving the welding bottom roller to rotate is arranged on one side of the installation seat, and the ultrasonic generator and the installation seat are all arranged on a frame.

8. An elastic fastening device for disposable sanitary products according to claim 7, wherein: the welding bottom roller comprises a welding shaft, a first traction roller, a front waistline roller, a second traction roller, a rear waistline roller and the first traction roller are sequentially and fixedly arranged on the welding shaft, the number of the ultrasonic generators is two and respectively corresponds to the number of the front waistline roller and the number of the rear waistline roller, the outer surfaces of the front waistline roller and the rear waistline roller are all along the axial fixation of the welding bottom roller, a plurality of rows of welding areas are fixedly arranged on the outer surfaces of the welding bottom roller, welding spots which are arranged at intervals are arranged in the circumferential direction of the welding bottom roller, and notches for accommodating waistline rubber bands are formed in the middle of the welding spots.

9. An elastic fastening device for disposable sanitary products according to claim 7, wherein: the welding driving mechanism comprises a welding driving motor, a speed reducer and a coupler, wherein the welding driving motor is arranged on the speed reducer, a motor shaft of the welding driving motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with one end of the welding bottom roller through the coupler, and the speed reducer is fixedly arranged on the mounting seat through a connecting flange.

10. An elastic fastening device for disposable sanitary products according to claim 1, wherein: s rubber band applying device includes the mounting bracket, applys driving motor, synchronizing wheel, drive belt, slide rail, slider and wire guide, applys driving motor be two and interval fixed mounting in on the mounting bracket and make applys driving motor 'S motor shaft sets up down, two equal fixed mounting has on applys driving motor' S the motor shaft synchronizing wheel, two pass through between the synchronizing wheel the drive belt transmission is connected, slider fixed connection in on the drive belt, slide rail fixed mounting in on the mounting bracket, the slider with slide rail sliding fit, wire guide fixed mounting in on the slider.

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