CN113715459A - Elastic sheet manufacturing device - Google Patents
Elastic sheet manufacturing device Download PDFInfo
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- CN113715459A CN113715459A CN202110980934.6A CN202110980934A CN113715459A CN 113715459 A CN113715459 A CN 113715459A CN 202110980934 A CN202110980934 A CN 202110980934A CN 113715459 A CN113715459 A CN 113715459A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
- B32B37/0084—Point bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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Abstract
The invention relates to the field of disposable sanitary products, in particular to an elastic sheet manufacturing device which comprises a rack, an elastic film unreeling mechanism, a slow driving roller, a fast driving roller, a composite station, an ultrasonic 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 composite station, the ultrasonic 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 base material conveying mechanism and a lower base material conveying mechanism are arranged on the rack at the composite station, a plurality of welding point positions are arranged on the ultrasonic device, each welding point position forms a separation line, the projection of each separation line on the horizontal plane forms an included angle of 25-35 degrees with the advancing direction of the production line, and the cutting device is provided with a plurality of cutting parts for forming cutting units on sheets. The technical problem that an elastic sheet manufacturing device which can realize good ventilation and is comfortable to wear does not exist in the field of the existing disposable sanitary products is solved.
Description
Technical Field
The invention relates to the field of disposable sanitary products, in particular to an elastic sheet 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 prior art, there is no manufacturing device that allows for an elastic sheet that is effectively breathable and comfortable to wear.
Disclosure of Invention
Therefore, in order to solve the above problems, the present invention provides an elastic sheet manufacturing apparatus, which solves the technical problem that there is no elastic sheet manufacturing apparatus that can achieve good ventilation and comfortable wearing in the field of disposable hygienic products.
In order to achieve the purpose, the invention adopts the following technical scheme: an elastic sheet manufacturing device comprises a rack, an elastic film unreeling mechanism, a slow driving roller, a fast driving roller, a composite station, an ultrasonic device, a middle driving roller, a cutting device, a tension caching mechanism and an output driving roller, wherein the elastic film unreeling mechanism, the slow driving roller, the fast driving roller, the composite station, the ultrasonic device, the middle driving roller, the cutting device, the tension caching mechanism and the output driving roller are arranged on the rack according to a production line, an upper substrate conveying mechanism and a lower substrate conveying mechanism are arranged on the composite station on the rack, the upper substrate conveying mechanism comprises an upper substrate unreeling mechanism, an upper substrate caching mechanism, an upper substrate driving roller and an upper substrate deviation rectifying mechanism, the lower substrate conveying mechanism comprises a lower substrate unreeling mechanism, a lower substrate caching mechanism, a lower substrate driving roller and a lower substrate deviation rectifying mechanism, a plurality of welding point positions are arranged on the ultrasonic device, each welding point position forms a separation line, the projection of the separation lines on a horizontal plane and the advancing direction of the production line form an included angle of 25-35 degrees, a plurality of cutting parts used for forming a cutting unit on a sheet, the cutting part comprises an upper cutting part which is long-strip-shaped and is arranged along the vertical cutting, a lower cutting part which is long-strip-shaped and is arranged along the vertical cutting, a left cutting part which is positioned on the left side of the upper cutting part and is arranged along the vertical cutting, and a right cutting part which is positioned on the right side of the lower cutting part and is arranged along the vertical cutting, wherein the left cutting part and the right cutting part are arranged along the vertical cutting to form a long 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, and 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.
Further, the cutting device and the ultrasonic device run synchronously, when the ultrasonic device forms continuous partition lines with intervals on the sheet material, the cutting device forms a plurality of cutting units between two adjacent partition lines in a uniformly 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 an ultrasonic welding mechanism.
Further, cutting device is including cutting last roller and cutting bottom roll, go up cutting portion, lower cutting portion, left cutting portion, right cutting portion are respectively for locating the cutting sword on the roller is gone up in the cutting.
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, a cooling rolling mechanism is arranged at the front end of the cutting device on the rack, and a heating rolling mechanism is arranged at the rear end of the cutting device on the rack.
Furthermore, the heating and pressing 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 cooling and pressing mechanism run synchronously, and the variable speed roller set changes by 50% -150% of the running speed of the fixed speed roller set.
By adopting the technical scheme, the invention has the beneficial effects that: the elastic sheet can be formed by compounding the upper substrate, the elastic film and the lower substrate, the compounding is carried out by adopting an ultrasonic device, a point-bonding state is formed on the elastic sheet, welding points are formed, each welding point forms a plurality of spaced partition lines, and a plurality of cutting parts are arranged to form a plurality of cutting units between two adjacent partition lines. The cutting part comprises an upper cutting part, a left cutting part, a lower cutting part and a right cutting part, so that corresponding structures can be correspondingly formed on the elastic sheet. 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 make upper non-woven fabrics, lower floor's non-woven fabrics can form the bonding, also form the welding hole in the position department of last cutting part, lower cutting part, left cutting part, right cutting part, 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 because the cutting is carried out under the stretching state, the stretching after the cutting is basically in a more limited state, namely the holding state after the cutting is basically equal to the state when the elastic membrane is worn. So set up, can more conveniently in the setting of parameter to make the shaping rate of accuracy of elastic sheet 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. The upper base material and the lower base material are made of non-woven fabrics and matched with the elastic membrane, so that a better ventilation effect can be realized, and the elastic membrane has good elastic expansion performance. 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 chill roll mechanism, heating press mechanism, its aim at makes the elastic membrane cooling before the cutting, makes its hardness increase to be convenient for cut, and make cutting effect better, the cutting portion of formation is more accurate. And then heating the elastic film to make the elastic film return to the original flexible state basically, thereby reducing the influence on the elastic film. And through the setting of cooling roll-in mechanism, heating roll-in mechanism, can form effectual centre gripping stable, avoid because the cutting back leads to the sudden stretching of elastic membrane. When the cooling rolling mechanism and the heating rolling mechanism are arranged, the cooling rolling mechanism and the heating rolling mechanism are close to the cutting device as much as possible, so that the elastic film is free from great elastic change after undergoing cutting, the cutting is more stable, and the cutting part is more accurate.
In addition, the heating and pressing 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 cooling roller pressing mechanism run synchronously, and the variable speed roller set changes by 50% -150% of the running speed of the fixed speed roller set. The purpose that sets up like this can effectively reduce the cutting incomplete when cutting, through the transport of differential, can make the elastic membrane can produce tensile to make the bleeder vent stretched again, thereby reduce the incomplete state of cutting. 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 structural view of an elastic sheet produced by 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 cooling and heating press mechanisms in cooperation with the cutting device.
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 sheet, which includes an upper substrate 1, a lower substrate 2 and an elastic film 3 sandwiched between the upper substrate 1 and the lower substrate 2, wherein the upper substrate 1 and the lower substrate 2 are breathable sheets, and a nonwoven material is selected in the present embodiment. The upper substrate 1, the elastic membrane 3 and the lower substrate 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 elongated upper cutting part 61 arranged along the vertical direction in a cutting mode, an elongated lower cutting part 62 arranged along the vertical direction in a cutting mode, a left cutting part 63 arranged along the vertical direction on the left side of the upper cutting part 61 and a right cutting part 64 arranged along the vertical direction 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 long strip state, 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, and the upper cutting part 61, the lower cutting part 62 and the upper cutting part 61 and the lower cutting part 64, The left cutting part 63 and the right cutting part 64 respectively cut the upper layer non-woven fabric 1, the lower layer non-woven fabric 2 and the elastic film 3, and when the upper layer non-woven fabric 1 and the lower layer non-woven fabric 2 are in a flat state, the elastic film 3 is in a transverse stretching 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 cutting part 61, the lower cutting part 62, the left cutting part 63, and the right cutting part 64 are formed by ultrasonic welding, and the vent holes are formed at the elastic film, and the upper layer nonwoven fabric and the lower layer nonwoven fabric are bonded, and a vent through 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.
A manufacturing method of elastic sheets based on the same inventive concept 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;
compounding an upper substrate and a lower substrate on the upper surface and the lower surface of the elastic membrane to form a sheet, and fixing the sheet by an ultrasonic device to ensure that the upper substrate, the elastic membrane and the lower substrate are connected to form fastening points, wherein 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 along the vertical cutting and positioned at the left side of the upper cutting part and a right cutting part arranged along the vertical cutting and positioned at the right side of the lower cutting part, the left cutting part and the right cutting part are arranged along the vertical cutting to form a strip-shaped 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 an upper base material, a lower base material and an elastic membrane, and vent 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 membrane is 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 embodiment further provides an elastic sheet manufacturing apparatus, including a frame 1, and an elastic film unwinding mechanism 91, a slow driving roller 92, a fast driving roller 93, a composite station 94, an ultrasonic device 95, a middle driving roller 96, a cutting device 97, a tension buffer mechanism 98, and an output driving roller 99, which are disposed on the frame according to a production line, where the frame is located at the composite station 94 and is connected to an upper substrate conveying mechanism and a lower substrate conveying mechanism, so that the composition of an upper substrate, an elastic film, and a lower substrate can be realized, the upper substrate conveying mechanism includes an upper substrate unwinding mechanism 910, an upper substrate buffer mechanism 911, an upper substrate driving roller 912, and an upper substrate deviation-correcting mechanism 913, and the lower substrate conveying mechanism includes a lower substrate unwinding mechanism 914, a lower substrate buffer mechanism 915, a lower substrate driving roller 916, and a lower substrate deviation-correcting mechanism 917.
The above mechanisms are all conventional in the art, and specific structures are disclosed, and reference may be made to related patents of the applicant, and only the ultrasonic device 95 and the cutting device 97 need to have a specific point location arrangement. The cutting device 97 may adopt an ultrasonic mechanism, and when the ultrasonic mechanism is adopted, it may form a plurality of cutting units on the sheet at one time, and as shown in fig. 3, a plurality of cutting units in a cutting area between two adjacent dividing lines form the most basic welding unit. In addition, an upper cutting roller can be matched with a lower bottom roller. The arrangement of the cutting edge on the upper cutting roll, as also shown in fig. 3, forms a standard cutting unit with a plurality of cutting units in the cutting area between two adjacent dividing lines, and the standard cutting units are uniformly distributed on the roll surface of the upper cutting roll. 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 cutting device is better shown in fig. 3.
Referring to fig. 6 again, a cooling roller mechanism 971 is provided at the front end of the cutting device 97 on the frame, and a heating roller mechanism is provided at the rear end of the cutting device 97 on the frame. The heating and pressing 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 cooling and pressing 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 cooling roll-pressing mechanism 971, the fixed speed roll set 972 and the variable speed roll set 973 in the scheme are both conventional two upper and lower roll matched structures, and are conventional technical means, and the difference lies in the change of rotating speed, heating and cooling and the purpose to be achieved.
The elastic sheet can be formed by compounding the upper substrate, the elastic film and the lower substrate, the compounding is carried out by adopting an ultrasonic device, a point-bonding state is formed on the elastic sheet, welding points are formed, each welding point forms a plurality of spaced partition lines, and a plurality of cutting parts are arranged to form a plurality of cutting units between two adjacent partition lines. The cutting part comprises an upper cutting part, a left cutting part, a lower cutting part and a right cutting part, so that corresponding structures can be correspondingly formed on the elastic sheet. 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 make upper non-woven fabrics, lower floor's non-woven fabrics can form the bonding, also form the welding hole in the position department of last cutting part, lower cutting part, left cutting part, right cutting part, 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 because the cutting is carried out under the stretching state, the stretching after the cutting is basically in a more limited state, namely the holding state after the cutting is basically equal to the state when the elastic membrane is worn. So set up, can more conveniently in the setting of parameter to make the shaping rate of accuracy of elastic sheet 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. The upper base material and the lower base material are made of non-woven fabrics and matched with the elastic membrane, so that a better ventilation effect can be realized, and the elastic membrane has good elastic expansion performance. 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 chill roll mechanism, heating press mechanism, its aim at makes the elastic membrane cooling before the cutting, makes its hardness increase to be convenient for cut, and make cutting effect better, the cutting portion of formation is more accurate. And then heating the elastic film to make the elastic film return to the original flexible state basically, thereby reducing the influence on the elastic film. And through the setting of cooling roll-in mechanism, heating roll-in mechanism, can form effectual centre gripping stable, avoid because the cutting back leads to the sudden stretching of elastic membrane. When the cooling rolling mechanism and the heating rolling mechanism are arranged, the cooling rolling mechanism and the heating rolling mechanism are close to the cutting device as much as possible, so that the elastic film is free from great elastic change after undergoing cutting, the cutting is more stable, and the cutting part is more accurate.
In addition, the heating and pressing 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 cooling roller pressing mechanism run synchronously, and the variable speed roller set changes by 50% -150% of the running speed of the fixed speed roller set. The purpose that sets up like this can effectively reduce the cutting incomplete when cutting, through the transport of differential, can make the elastic membrane can produce tensile to make the bleeder vent stretched again, thereby reduce the incomplete state of cutting. 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.
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 (10)
1. An elastic sheet manufacturing apparatus characterized in that: the device comprises a rack, an elastic film unwinding mechanism, a slow driving roller, a fast driving roller, a composite station, an ultrasonic 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 ultrasonic 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 substrate conveying mechanism and a lower substrate conveying mechanism are arranged on the composite station on the rack, the upper substrate conveying mechanism comprises an upper substrate unwinding mechanism, an upper substrate buffer mechanism, an upper substrate driving roller and an upper substrate deviation correcting mechanism, the lower substrate conveying mechanism comprises a lower substrate unwinding mechanism, a lower substrate buffer mechanism, a lower substrate driving roller and a lower substrate deviation correcting mechanism, a plurality of welding point positions are arranged on the ultrasonic device, each welding point position forms a partition line, an included angle between the projection of the partition line on the horizontal plane and the advancing direction of the production line is 25-35 degrees, a plurality of cutting portions used for forming a cutting unit on a sheet are arranged on the cutting device, the cutting part comprises an upper cutting part which is long-strip-shaped and is arranged along the vertical cutting, a lower cutting part which is long-strip-shaped and is arranged along the vertical cutting, a left cutting part which is positioned on the left side of the upper cutting part and is arranged along the vertical cutting, and a right cutting part which is positioned on the right side of the lower cutting part and is arranged along the vertical cutting, wherein the left cutting part and the right cutting part are arranged along the vertical cutting to form a long 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, and 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.
2. An elastic sheet manufacturing apparatus according to claim 1, wherein: the cutting device and the ultrasonic device run synchronously, and when the ultrasonic device forms continuous partition lines with intervals on the sheet material, the cutting device forms a plurality of cutting units between two adjacent partition lines in an evenly distributed mode.
3. An elastic sheet 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 sheet 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 sheet manufacturing apparatus according to any one of claims 1 to 4, wherein: the cutting device is an ultrasonic welding mechanism.
6. An elastic sheet manufacturing apparatus according to any one of claims 1 to 4, wherein: the cutting device comprises an upper cutting roller and a bottom cutting roller, and the upper cutting portion, the lower cutting portion, the left cutting portion and the right cutting portion are cutting edges arranged on the upper cutting roller respectively.
7. An elastic sheet manufacturing apparatus according to any one of claims 1 to 4, 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.
8. An elastic sheet manufacturing apparatus according to any one of claims 1 to 4, 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.
9. An elastic sheet manufacturing apparatus according to any one of claims 1 to 4, wherein: the cooling rolling mechanism is arranged at the front end of the cutting device on the rack, and the heating rolling mechanism is arranged at the rear end of the cutting device on the rack.
10. An elastic sheet manufacturing apparatus according to claim 9, wherein: the heating and pressing 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 cooling roller pressing mechanism run synchronously, and the variable speed roller set changes by 50% -150% of the running speed of the fixed speed roller set.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980934.6A CN113715459B (en) | 2021-08-25 | 2021-08-25 | Elastic sheet manufacturing device |
| PCT/CN2021/118106 WO2023024180A1 (en) | 2021-08-25 | 2021-09-14 | Elastic sheet manufacturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110980934.6A CN113715459B (en) | 2021-08-25 | 2021-08-25 | Elastic sheet manufacturing device |
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| CN113715459A true CN113715459A (en) | 2021-11-30 |
| CN113715459B CN113715459B (en) | 2022-08-16 |
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| WO (1) | WO2023024180A1 (en) |
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| CN113715459B (en) | 2022-08-16 |
| WO2023024180A1 (en) | 2023-03-02 |
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