CN113662751A

CN113662751A - Elastic waistline manufacturing device

Info

Publication number: CN113662751A
Application number: CN202110980779.8A
Authority: CN
Inventors: 林笛; 黄雨昕
Original assignee: Quanzhou Hanwei Machinery Manufacturing Co Ltd
Current assignee: Quanzhou Hanwei Machinery Manufacturing Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-11-19
Anticipated expiration: 2041-08-25
Also published as: CN113662751B; WO2023024182A1

Abstract

The invention relates to the field of disposable sanitary products, in particular to an elastic waistline manufacturing device which comprises a rack, an elastic film unreeling mechanism, a slow driving roller, a fast driving roller, a compound station, a fastening device, a middle driving roller, a cutting device, a tension buffer mechanism and an output driving roller, wherein the elastic film unreeling mechanism, the slow driving roller, the fast driving roller, the compound station, the fastening device, the middle driving roller, the cutting device, the tension buffer mechanism and the output driving roller are arranged on the rack along a production line, an upper non-woven fabric conveying mechanism and a lower non-woven fabric conveying mechanism are arranged on the rack at the compound station, a plurality of welding point positions are arranged on the fastening device, each welding point position forms a partition line, the projection of each partition line on the horizontal plane and the advancing direction of the production line form an included angle of 25-35 degrees, and a plurality of cutting parts used for forming cutting units on a sheet are arranged on the cutting device. It has solved the technical problem that does not have a elasticity waistline manufacturing installation that can realize better ventilative, comfortable and easy to wear in current disposable hygienic products field.

Description

Elastic waistline manufacturing device

Technical Field

The invention relates to the field of disposable sanitary products, in particular to an elastic waistline manufacturing device.

Background

At present, elastic non-woven fabrics have more applications, particularly in the field of disposable sanitary products, and the structure of the elastic non-woven fabrics is as follows: CN201210380277.2 discloses a composite elastic nonwoven fabric structure and a method for manufacturing the same, wherein the composite elastic nonwoven fabric structure comprises an elastic fabric layer and a nonwoven fabric layer. The non-woven fabric layer is integrated with the elastic fabric layer. And the manufacturing method of the composite elastic non-woven fabric comprises the following steps: providing an elastic fabric layer; combining a non-woven fabric layer and the elastic fabric layer into a whole; hot-pressing the non-woven fabric layer and the elastic fabric layer to make them flat; and cooling the non-woven fabric layer and the elastic fabric layer. By using the composite elastic non-woven fabric structure and the manufacturing method thereof of the invention, the properties of non-woven fabric such as tension, elastic force, tearing strength and elongation can be effectively increased.

In the field of existing disposable sanitary products, the application of the elastic material combined with the non-woven fabric is mainly applied to the waistline area of the paper diaper, in order to ventilate, the paper diaper is generally perforated, and holes of the elastic material are generally uniformly distributed, so that the balance between strength and ventilation is realized. However, for strength, the holes are usually not too dense, so that good ventilation is not achieved, and the comfort of wearing is slightly poor. In the existing application, a manufacturing device for elastic waistline which can realize effective ventilation and comfortable wearing is not provided.

Disclosure of Invention

Therefore, in order to solve the above problems, the present invention provides an elastic waistline manufacturing device, which solves the technical problem that no elastic waistline manufacturing device capable of achieving good ventilation and comfortable wearing exists in the field of the existing disposable sanitary products.

In order to achieve the purpose, the invention adopts the following technical scheme: an elastic waistline manufacturing device comprises a rack, an elastic film unwinding mechanism, a slow driving roller, a fast driving roller, a composite station, a fastening device, a middle driving roller, a cutting device, a tension caching mechanism and an output driving roller, wherein the elastic film unwinding mechanism, the slow driving roller, the fast driving roller, the composite station, the fastening device, the middle driving roller, the cutting device, the tension caching mechanism and the output driving roller are arranged on the rack, an upper non-woven fabric conveying mechanism and a lower non-woven fabric conveying mechanism are arranged on the rack at the composite station, the upper non-woven fabric conveying mechanism comprises an upper non-woven fabric unwinding mechanism, an upper non-woven fabric caching mechanism, an upper non-woven fabric driving roller and an upper non-woven fabric deviation rectifying mechanism, the lower non-woven fabric conveying mechanism comprises a lower non-woven fabric unwinding mechanism, a lower non-woven fabric caching mechanism, a lower non-woven fabric driving roller and a lower non-woven fabric deviation rectifying mechanism, a plurality of welding point positions are arranged on the fastening device, each welding point forms a separation line, the projection of the separation line on a horizontal plane and the advancing direction of the assembly line are 25-35 degrees, fastener, cutting device are ultrasonic welding device, cutting device includes the soldered connection, be equipped with the portion of penetrating on the middle part of soldered connection, be equipped with the bonding part on the week side that lies in the portion of penetrating on the soldered connection, the front end that lies in cutting device in the frame is equipped with heating roller mechanism, the rear end that lies in cutting device in the frame is equipped with cooling roller mechanism, cooling roller mechanism includes the constant speed roller set and the variable speed roller set that the interval set up, constant speed roller set and heating roller mechanism synchronous operation, the variable speed roller set is with the operating speed's of constant speed roller set 50% ~ 150% change.

Further, the cutting device and the fastening device run synchronously, and when the fastening device forms continuous partition lines with intervals on the sheet, the cutting device forms a plurality of cutting units between two adjacent partition lines in an evenly distributed mode.

Furthermore, a cutting area is formed between two adjacent partition lines, the connecting lines of the lower ends of the plurality of cutting units in the same cutting area are first connecting lines, and the first connecting lines are parallel to the partition lines.

Further, the spacing between the first connecting line and the nearest separation line is 2.2-2.7 mm.

Further, the cutting device is provided with a plurality of cutting parts for forming cutting units on the sheet, and the cutting parts comprise an upper cutting part in a long strip shape arranged along the vertical cutting, a lower cutting part in a long strip shape arranged along the vertical cutting, a left cutting part arranged on the left side of the upper cutting part and arranged along the vertical cutting, and a right cutting part arranged on the right side of the lower cutting part and arranged along the vertical cutting.

Further, the left cutting part and the right cutting part are arranged along the vertical direction to form a long strip state, and the length of the left cutting part and the length of the right cutting part are smaller than that of the upper cutting part or that of the lower cutting part.

Furthermore, the upper cutting part, the left cutting part, the lower cutting part and the right cutting part of the same cutting part form a rhombus.

Furthermore, the number of the left cutting parts is more than two, and the more than two left cutting parts and the upper cutting part form a first oblique line.

Furthermore, the number of the right cutting parts is more than two, and the more than two right cutting parts and the lower cutting part form a second oblique line.

Furthermore, the bonding part and the penetrating part are in smooth transition, a heat insulation coating layer is arranged on the bonding part and used for isolating the temperature of 30-60 ℃, and the free end of the penetrating part is sharp.

By adopting the technical scheme, the invention has the beneficial effects that: the setting of this scheme can form non-woven fabrics, elastic film, the compound elastic waistline of non-woven fabrics down, and its complex adopts fastener to go on, forms the state that the point is glued on the elastic waistline to form the welding point, each welding point forms many spaced separation lines, and through being provided with a plurality of cutting portions, a plurality of cutting portions form a plurality of cutting units between two adjacent separation lines. The cutting part comprises an upper cutting part, a left cutting part, a lower cutting part and a right cutting part, so that a corresponding structure can be correspondingly formed on the elastic waistline. And because the elastic membrane is in horizontal tensile state, can make the elastic membrane form the bleeder vent of platykurtic in last cutting portion, lower cutting portion, left cutting portion, right cutting portion department, this kind of bleeder vent can form the platykurtic because tensile state, and its size often is relevant with vertical cutting length. The vertical length of the upper cutting part and the lower cutting part is generally set to be 1.5-5 mm, the vertical length of the left cutting part and the right cutting part is generally set to be 0.5-2 mm, and the ratio of the upper cutting part or the lower cutting part to the left cutting part or the right cutting part is generally 2-3: 1. as for the widths of the upper cutting part, the lower cutting part, the left cutting part and the right cutting part, the smaller the width is, the better the width is, the forming mode can adopt cutting or other means, adopt an ultrasonic welding mode, realize penetration and form better forming. Adopt ultrasonic bonding back, also can be so that go up the non-woven fabrics, the non-woven fabrics can form the bonding down, also forms the welding hole in the position department of last cutting part, lower cutting part, left cutting part, right cutting part, and the bleeder vent can expand in this position like this to can make ventilative effect better.

This scheme can be through the setting of slow drive roller, fast drive roller for the elastic membrane realizes effectual extension, and its tensile multiplying power can be through the speed ratio realization regulation of slow drive roller, fast drive roller. And then carry on the point through the fastening device after compounding, and cut after the point is glued, thus realize effectively forming the bleeder vent on the elastic membrane, its cut is carried on through the particular way, thus can make the bleeder vent on the elastic membrane stretch under the elastic action, form the platykurtic, thus make the ventilative effectual, and because of the cut carried on under the stretching state, the stretching after this kind of cut is in the state of comparatively limit basically, that is to say the holding state after cutting is basically equal to the state when wearing. So set up, can more make things convenient for in the setting of parameter to make elastic waistline's shaping rate of accuracy higher, the shaping effect is better.

Furthermore, the number of the left cutting part and the right cutting part of each cutting unit is two, and the vent holes in the upper cutting part, the lower cutting part, the left cutting part and the right cutting part form a good ventilation structure. Furthermore, the arrangement of the first oblique line and the second oblique line can form a better arrangement mode, and better arrangement of the cutting units is realized, so that effective ventilation is realized. Furthermore, the partition line is inclined, so that a better distribution effect can be formed, and better stability can be realized through the inclined limitation in the transverse stretching process. Through the parallelism of the first connecting line and the separating line, each air hole can present a better stretching state. By the arrangement, the stretching forming of each air hole can be effectively controlled. The included angle between the partition line and the horizontal plane is 25-35 degrees, the distance between the first connecting line and the nearest partition line is 2.2-2.7 mm, and the numerical setting is a better range and can form reasonable interval distribution. The upper cutting part, the left cutting part, the lower cutting part and the right cutting part of one cutting unit form a rhombus, and the effective distribution is also realized. Go up the non-woven fabrics, lower non-woven fabrics is the non-woven fabrics material, cooperates the elastic membrane to can realize better ventilation effect, have good elasticity stretching performance moreover. Since it is a disposable sanitary article, the life requirement is not high, and the destructive operation of cutting the elastic film does not create a bad condition.

Further, the setting of heating roller mechanism, chill roll mechanism, its aim at makes the elastic membrane preheat before the cutting to efficiency when can making ultrasonic bonding is higher, can make moreover pierce through better with adhesive effect, then cools off, makes the bonding portion of going up non-woven fabrics and lower non-woven fabrics formation realize better combination, is difficult for breaking away from, and ventilative through-hole also can keep better structure moreover. Moreover, the elastic film can be substantially restored to its original state, and the influence on the elastic film can be reduced. And through the setting of heating roller mechanism, chill roll mechanism, can form effectual centre gripping stable, avoid because the elastic membrane's that leads to after the cutting suddenly tensile. Heating roller mechanism, chill roll mechanism should be close to cutting device as far as possible when setting up to make the elastic film experience after the cutting, can not have great elasticity change, make the cutting more stable, the position of cutting is more accurate.

In addition, the cooling roller mechanism comprises a fixed speed roller set and a variable speed roller set which are arranged at intervals, the fixed speed roller set and the heating roller mechanism run synchronously, and the variable speed roller set changes by 50-150% of the running speed of the fixed speed roller set. The aim at that sets up like this, the cutting when can effectively reducing the cutting is incomplete, through the transport of differential, can be so that the elastic membrane can produce tensile to make the bleeder vent can be stretched once more, thereby reduce the elastic membrane and go up the non-woven fabrics or the condition that the non-woven fabrics glues glutinous down. The speed change of the variable speed roller group is periodical, so that the frequency of conveying materials by the variable speed roller group is basically consistent with that of the fixed speed roller group. The deviation generated here is eliminated by the tension buffer mechanism and the output drive roller mechanism.

Drawings

FIG. 1 is a schematic view of the construction of an elastic waist band produced in accordance with the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is a display state diagram of FIG. 1;

FIG. 4 is a reference diagram of the process of the present invention;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is a schematic view of the heating roller mechanism and the cooling roller mechanism cooperating with the cutting device;

fig. 7 is a schematic view of the structure of the welding head.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 4, the present embodiment provides an elastic waist band, which includes an upper non-woven fabric 1, a lower non-woven fabric 2, and an elastic film 3 sandwiched between the upper non-woven fabric 1 and the lower non-woven fabric 2, wherein the upper non-woven fabric 1 and the lower non-woven fabric 2 are breathable sheets, and a non-woven fabric material is selected in the present embodiment. The upper non-woven fabric 1, the elastic film 3 and the lower non-woven fabric 2 are fixedly connected through a plurality of connecting parts to form fastening points 4, each fastening point 4 is distributed to form a plurality of partition lines F, each partition line F is arranged along the transverse direction at intervals, two adjacent partition lines F form a partition area 5, at least one cutting unit 6 is arranged in each two adjacent partition lines, each cutting unit 6 comprises an upper cutting part 61 which is long in strip shape and is arranged along the vertical direction, a lower cutting part 62 which is long in strip shape and is arranged along the vertical direction, a left cutting part 63 which is arranged along the vertical direction and is arranged on the left side of the upper cutting part 61, and a right cutting part 64 which is arranged along the vertical direction and is arranged on the right side of the lower cutting part 62, the left cutting part 63 and the right cutting part 64 are arranged along the vertical direction to form a strip shape, the lengths of the left cutting part 63 and the right cutting part 64 are smaller than that of the upper cutting part 61 or the lower cutting part 62, the upper cutting part 61, the lower cutting part 62, The lower cutting part 62, the left cutting part 63, and the right cutting part 64 cut the upper nonwoven fabric 1, the lower nonwoven fabric 2, and the elastic film 3, respectively, and the elastic film 3 is in a laterally stretched state when the upper nonwoven fabric 1 and the lower nonwoven fabric 2 are in a flat state.

The elastic film 3 is positioned at the upper cutting part 61, the lower cutting part 62, the left cutting part 63 and the right cutting part 64 in a stretching state to form flat air holes 7.

In the vertical direction, the ventilation holes formed by the left and

right cutting portions

63 and 64 are respectively located between the ventilation holes formed by the upper and

lower cutting portions

61 and 62. The number of the left cutting portions 63 is two or more, and the two left cutting portions 63 and the upper cutting portion 61 form a first oblique line D. The number of the right cutting portions 64 is two or more, and the two right cutting portions 64 and the lower cutting portion 62 form a second oblique line E. The first oblique line D is parallel to the second oblique line E, which can form a better and more uniform shape. The connecting line of the lower ends of the lower cutting portions 62 of two adjacent cutting units 6 is a first connecting line G, and the first connecting line G is parallel to each partition line F. And the included angle C between the separation line F and the horizontal plane is 25-35 degrees. The distance between the first connecting line G and the nearest separation line F is 2.2-2.7 mm. The upper cutting portion 61, the left cutting portion 63, the lower cutting portion 62, and the right cutting portion 64 of one cutting unit 6 form a rhombus H. The length of fastening point 4 along longitudinal direction is greater than along transverse direction's length, and the ratio is 2 ~ 3: 1.

in this embodiment, the upper cut portion 61, the lower cut portion 62, the left cut portion 63, and the right cut portion 64 are formed by ultrasonic welding, the vent holes are formed at the elastic film, the upper nonwoven fabric and the lower nonwoven fabric are bonded, and a vent hole 8 is formed at the bonded portion. In this embodiment, the upper cutting portion 61, the lower cutting portion 62, the left cutting portion 63, and the right cutting portion 64 may be formed by cutting with a blade. The stretch ratio of the elastic film is usually 1.5 to 4, but it may be larger or smaller, and the thickness of the elastic film is selected from 0.2 to 1 mm.

The invention relates to a method for manufacturing elastic waistline based on the same invention concept, which comprises the following steps:

firstly, unwinding an elastic film, passing through a slow driving roller and then passing through a fast driving roller to form differential conveying, so that the elastic film is stretched;

secondly, compounding an upper non-woven fabric and a lower non-woven fabric on the upper surface and the lower surface of the elastic film to form a sheet, and fixing the sheet through a fastening device, so that the upper non-woven fabric, the elastic film and the lower non-woven fabric are connected to form fastening points, each fastening point is distributed to form a plurality of partition lines, and each partition line is arranged at intervals along the transverse direction;

thirdly, rolling by an intermediate driving roller to realize leveling;

fourthly, cutting the sheet by using a cutting device to ensure that at least one cutting unit is arranged in two partition lines on the adjacent sheet, each cutting unit comprises a strip-shaped upper cutting part arranged along the vertical cutting, a strip-shaped lower cutting part arranged along the vertical cutting, a left cutting part arranged on the left side of the upper cutting part along the vertical cutting and a right cutting part arranged on the right side of the lower cutting part along the vertical cutting, the left cutting part and the right cutting part are arranged along the vertical cutting to form a strip state, the lengths of the left cutting part and the right cutting part are smaller than that of the upper cutting part or the lower cutting part, the upper cutting part, the lower cutting part, the left cutting part and the right cutting part respectively cut upper non-woven fabrics, lower non-woven fabrics and elastic membranes, and air holes are formed at the upper cutting part, the lower cutting part, the left cutting part and the right cutting part under the action of transverse pulling force after the elastic membranes are cut, the width of each air hole in the transverse direction is greater than the length of each air hole in the vertical direction, so that the air holes are flat;

and fifthly, the sheet passes through the tension buffer mechanism and then is driven to be output through the output driving roller.

Referring to fig. 5, the present embodiment further provides an elastic waistline manufacturing apparatus, which includes a frame 1, an elastic film unwinding mechanism 91, a slow driving roller 92, a fast driving roller 93, a combining station 94, a fastening device 95, a middle driving roller 96, a cutting device 97, a tension buffering mechanism 98, and an output driving roller 99, an upper non-woven fabric conveying mechanism and a lower non-woven fabric conveying mechanism are connected to the machine frame at a compound station 94, thereby can realize the compounding of last non-woven fabrics, elastic membrane, lower non-woven fabrics, go up non-woven fabrics conveying mechanism and include non-woven fabrics unwinding mechanism 910, go up non-woven fabrics buffer memory mechanism 911, go up non-woven fabrics drive roller 912, go up non-woven fabrics mechanism 913 of rectifying, non-woven fabrics conveying mechanism includes down non-woven fabrics unwinding mechanism 914, lower non-woven fabrics buffer memory mechanism 915, lower non-woven fabrics drive roller 916, lower non-woven fabrics mechanism 917 of rectifying down.

The above mechanisms are all conventional in the art, and specific structures are disclosed, and reference is made to the related patent of the applicant, and only the fastening device 95 and the cutting device 97 need to have a specific point location arrangement. The fastening device 95 and the cutting device 97 are both ultrasonic welding devices, wherein the cutting device 97 can form a plurality of cutting units on the sheet material at one time, as shown in fig. 3, the plurality of cutting units in the cutting area between two adjacent dividing lines form the most basic welding unit and the distribution of welding heads, and as shown in fig. 3, the plurality of cutting units in the cutting area between two adjacent dividing lines form a standard cutting unit, and the plurality of standard cutting units are uniformly distributed on the roller surface of the upper cutting roller. The upper cutting portion 61, the lower cutting portion 62, the left cutting portion 63, and the right cutting portion 64 of the cutting unit 6 are the upper cutting portion, the lower cutting portion, the left cutting portion, and the right cutting portion of the cutting device 97. The representation of the weld head distribution is better shown in figure 3.

Referring to fig. 7, the cutting device 97 includes a welding head 974, a penetrating portion 9741 is disposed on a middle portion of the welding head 974, an adhesive portion 9742 is disposed on a peripheral side of the penetrating portion 9741 of the welding head 974, the adhesive portion 9742 and the penetrating portion 9741 are in smooth transition, a heat insulating coating layer 9743 is disposed on the adhesive portion 9742, and the heat insulating coating layer 9743 is used for insulating a temperature of 30 to 60 ℃. And because adopt smooth transition, also be the arc transition in fact, just so can not produce the laminating that leans on the form, also can not form the penetration during ultrasonic bonding. The free end of the penetration portion 9741 is sharp.

Referring to fig. 6 again, a heating roller mechanism 971 is provided at the front end of the cutting device 97 on the frame, and a cooling roller mechanism is provided at the rear end of the cutting device 97 on the frame. The cooling roller mechanism comprises a fixed speed roller group 972 and a variable speed roller group 973 which are arranged at intervals, the fixed speed roller group 972 and the heating roller mechanism 971 run synchronously, and the variable speed roller group 973 changes by 50% -150% of the running speed of the fixed speed roller group 972. The heating roller mechanism 971, the fixed speed roller group 972 and the variable speed roller group 973 in the scheme are both conventional structures matched with two upper and lower rollers, and are conventional technical means, and the difference is rotation speed, heating and cooling change and the purpose to be achieved.

The setting of this scheme can form non-woven fabrics, elastic film, the compound elastic waistline of non-woven fabrics down, and its complex adopts fastener to go on, forms the state that the point is glued on the elastic waistline to form the welding point, each welding point forms many spaced separation lines, and through being provided with a plurality of cutting portions, a plurality of cutting portions form a plurality of cutting units between two adjacent separation lines. The cutting part comprises an upper cutting part, a left cutting part, a lower cutting part and a right cutting part, so that a corresponding structure can be correspondingly formed on the elastic waistline. And because the elastic membrane is in horizontal tensile state, can make the elastic membrane form the bleeder vent of platykurtic in last cutting portion, lower cutting portion, left cutting portion, right cutting portion department, this kind of bleeder vent can form the platykurtic because tensile state, and its size often is relevant with vertical cutting length. The vertical length of the upper cutting part and the lower cutting part is generally set to be 1.5-5 mm, the vertical length of the left cutting part and the right cutting part is generally set to be 0.5-2 mm, and the ratio of the upper cutting part or the lower cutting part to the left cutting part or the right cutting part is generally 2-3: 1. as for the widths of the upper cutting part, the lower cutting part, the left cutting part and the right cutting part, the smaller the width is, the better the width is, the forming mode can adopt cutting or other means, adopt an ultrasonic welding mode, realize penetration and form better forming. Adopt ultrasonic bonding back, also can be so that go up the non-woven fabrics, the non-woven fabrics can form the bonding down, also forms the welding hole in the position department of last cutting part, lower cutting part, left cutting part, right cutting part, and the bleeder vent can expand in this position like this to can make ventilative effect better.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An elastic waist band manufacturing apparatus characterized in that: the automatic correction device comprises a rack, an elastic film unwinding mechanism, a slow driving roller, a fast driving roller, a composite station, a fastening device, a middle driving roller, a cutting device, a tension buffer mechanism and an output driving roller, wherein the elastic film unwinding mechanism, the slow driving roller, the fast driving roller, the composite station, the fastening device, the middle driving roller, the cutting device, the tension buffer mechanism and the output driving roller are arranged on the rack according to a production line, an upper non-woven fabric conveying mechanism and a lower non-woven fabric conveying mechanism are arranged at the composite station on the rack, the upper non-woven fabric conveying mechanism comprises an upper non-woven fabric unwinding mechanism, an upper non-woven fabric buffer mechanism, an upper non-woven fabric driving roller and an upper non-woven fabric correction mechanism, the lower non-woven fabric conveying mechanism comprises a lower non-woven fabric unwinding mechanism, a lower non-woven fabric buffer mechanism, a lower non-woven fabric driving roller and a lower non-woven fabric correction mechanism, a plurality of welding point positions are arranged on the fastening device, each welding point forms a separation line, the projection of the separation lines on a horizontal plane is 25-35 degrees with the moving direction of the assembly line, and the fastening device, The cutting device is ultrasonic welding device, cutting device includes the soldered connection, be equipped with the portion of penetrating on the middle part of soldered connection, be equipped with the bonding part on the week side that lies in the portion of penetrating on the soldered connection, the front end that lies in cutting device in the frame is equipped with heating roller mechanism, the rear end that lies in cutting device in the frame is equipped with cooling roller mechanism, cooling roller mechanism includes constant speed roller set and the variable speed roller set that the interval set up, constant speed roller set and heating roller mechanism synchronous operation, the variable speed roller set is with the operating speed's of constant speed roller set 50% -150% change.

2. An elastic waist band manufacturing apparatus according to claim 1, wherein: the cutting device and the fastening device run synchronously, and when the fastening device forms continuous partition lines with intervals on the sheet, the cutting device forms a plurality of cutting units between two adjacent partition lines in an evenly distributed mode.

3. An elastic waist band manufacturing apparatus according to claim 2, wherein: a cutting area is formed between two adjacent partition lines, the connecting lines of the lower ends of a plurality of cutting units in the same cutting area are first connecting lines, and the first connecting lines are parallel to the partition lines.

4. An elastic waist band manufacturing apparatus according to claim 3, wherein: the spacing between the first connecting line and the nearest separating line is 2.2-2.7 mm.

5. An elastic waist band manufacturing apparatus according to any one of claims 1 to 4, wherein: the cutting device is provided with a plurality of cutting parts for forming cutting units on the sheet, and the cutting parts comprise an upper cutting part which is long in strip shape and is arranged along vertical cutting, a lower cutting part which is long in strip shape and is arranged along vertical cutting, a left cutting part which is positioned on the left side of the upper cutting part and is arranged along vertical cutting, and a right cutting part which is positioned on the right side of the lower cutting part and is arranged along vertical cutting.

6. An elastic waist band manufacturing apparatus according to claim 5, wherein: the left cutting part and the right cutting part are arranged along vertical cutting to form a long strip state, and the length of the left cutting part and the length of the right cutting part are smaller than that of the upper cutting part or that of the lower cutting part.

7. An elastic waist band manufacturing apparatus according to claim 5, wherein: the upper cutting part, the left cutting part, the lower cutting part and the right cutting part of the same cutting part form a rhombus.

8. An elastic waist band manufacturing apparatus according to claim 5, wherein: the left cutting part is more than two, and the left cutting part and the upper cutting part form an oblique first oblique line.

9. An elastic waist band manufacturing apparatus according to claim 5, wherein: the right cutting parts are more than two, and the more than two right cutting parts and the lower cutting part form a second oblique line.

10. An elastic waist band manufacturing apparatus according to any one of claims 1 to 4, wherein: the bonding portion and the penetrating portion are in smooth transition, a heat insulation coating layer is arranged on the bonding portion and used for isolating the temperature of 30-60 ℃, and the end portion of the penetrating portion is sharp.