A folding system for elastic left and right waist patches of diapers and a manufacturing method thereof

Abstract

The present invention provides a wrapping and folding system for elastic left and right waist patches of diapers and a manufacturing method thereof, comprising: a first transmission path and a second transmission path, wherein a transmission unit, a folding and adsorption unit and a wrapping and folding unit are arranged on the first transmission path; a conveying unit and a cutting unit are arranged along the process direction on the second transmission path; the transmission unit adsorbs the composite semi-finished diaper along the first transmission path by means of negative pressure adsorption; the wrapping and folding unit and the folding and adsorption unit are arranged up and down and connected with the downstream side of the transmission unit; the folding and adsorption unit gradually adsorbs and folds the elastic left and right waist patches on the skin side of the diaper body semi-finished product continuum by means of negative pressure adsorption through the folding and adsorption holes to form a semi-finished diaper. The present invention ensures that after the cutting unit cuts, the thin elastic left and right waist patches will not produce wrinkles or CD direction position shifts, and during the wrapping and folding process, the elastic left and right waist patches will not fluctuate, so that the wrapping and folding performance is stable and the wrapping and folding quality and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of disposable sanitary product manufacturing equipment, in particular to baby diapers, adult diapers, etc., and more particularly to a wrapping and folding system of elastic left and right waist patches of diapers and a manufacturing method thereof. Background Art

[0002] like Figure 1 As shown, a plan view schematic diagram of a disposable diaper in the prior art is shown, wherein the disposable diaper S has a diaper body S1 and a pair of left and right waist stickers S2 arranged at both ends of the rear side of the diaper body S1. When worn, the left and right waist stickers S2 are fixed to the front waist sticker S3 at the front end of the diaper body S1, so that the disposable diaper S is in a closed state, thereby forming a trouser-like shape with a waist opening and two leg openings. Normally, the left and right waist stickers S2 are usually composed of a spunbond non-woven fabric S21' (or SMS composite non-woven fabric) and a magic hook S22, and the magic hook S22 is a fabric with a hook on one side. The front waist sticker S3 is a non-woven fabric or PP film used to match the magic hook S22. The two are attached together to generate natural adhesion, and they will naturally separate when pulled by hand, meeting the requirements of wearing and taking off the disposable diaper.

[0003] In the process of preparing disposable diapers, in order to put the products into bags later, it is necessary to fold a pair of left and right waist stickers S2 on both sides toward the diaper body S1. When the left and right waist stickers S2 are a structure of spunbond non-woven fabric S21' (or SMS composite non-woven fabric) and magic hook S22, due to the hardness of the material itself, after the cutter unit cuts the left and right waist stickers on both sides into a predetermined length, a hammer roller will be set under the cutter unit to transfer the left and right waist stickers S2 on both sides after cutting (transfer) to the diaper body S1, and then they can smoothly enter the folding device, and the left and right waist stickers S2 on both sides are folded toward the diaper body S1 using the folding plates in the folding device.

[0004] Nowadays, there are some methods on the market that use offline elastic materials to replace spunbond non-woven fabrics (or SMS composite non-woven fabrics) as a substrate for the left and right waist stickers S2 to form elastic composite materials, wherein the elastic materials include structures such as elastic films and elastic rubber bands. Due to the elastic composite materials' stretching characteristics, they have poor stiffness (rigidity) compared to the left and right waist stickers S2 without elasticity. The materials are often thinner, and the elastic materials are prone to deformation, unstable tension, and other problems during transportation. Therefore, when the left and right waist stickers S2 are cut and folded using the original process technology, due to the insufficient stiffness of the elastic material (half the stiffness of the traditional spunbond non-woven fabric material), after being cut by the cutting unit, its tension is destroyed, it is easy to wrinkle, and the position is displaced in the CD direction (the CD direction is the direction perpendicular to the main process direction), resulting in poor transcription. When entering the folding device for folding, due to the insufficient stiffness of the material, the left and right waist stickers S2 produce irregular fluctuations during the operation of the equipment, resulting in poor folding performance, which greatly affects the folding quality and accuracy. Summary of the invention

[0005] In order to solve the technical problem that in the folding process of disposable diapers with elastic left and right waist tapes in the prior art, the tension of the elastic left and right waist tapes is damaged due to poor stiffness (rigidity), and is easy to wrinkle and shift in the CD direction, an embodiment of the present invention provides a folding system for elastic left and right waist tapes of diapers, the folding system comprising: a first conveying path as a main path and a second conveying path as a secondary path, the second conveying path is arranged above the first conveying path, and the second conveying path is used to process a pair of elastic left and right waist tape continuums with magic hooks on one side and convey them to the first conveying path;

[0006] A conveying unit, a folding and adsorption unit, and a folding unit are arranged on the first conveying path, and a conveying unit and a cutting unit are arranged along the process direction on the second conveying path;

[0007] The cutter unit is arranged at the upstream side of the conveying unit, and is used to cut the pair of left and right waist tape continuum into a pair of elastic left and right waist tapes of predetermined length, and convey and attach the cut pair of elastic left and right waist tapes to both sides of the diaper body semi-finished product continuum conveyed by the conveying unit in the first conveying path to form a composite semi-finished diaper, wherein a portion of the pair of elastic left and right waist tapes is located outside the outer edge line of the diaper body semi-finished product continuum; the diaper body semi-finished product continuum has a skin side in contact with the skin when worn and a non-skin side away from the skin side;

[0008] The conveying unit absorbs the composite semi-finished diaper and conveys it along the first conveying path in a negative pressure adsorption manner, with the skin side of the composite semi-finished diaper facing downward;

[0009] The wrapping and folding unit and the folding and adsorption unit are arranged up and down and connected with the downstream side of the conveying unit, and a conveying channel is formed between the folding and adsorption unit and the wrapping and folding unit, and the composite semi-finished diaper is conveyed in the conveying channel;

[0010] The folding and adsorption unit comprises a folding box with a cavity structure, and a plurality of folding and adsorption holes are provided on two sides of the folding box perpendicular to the first conveying path, and a pair of elastic left and right waist patches located outside the outer edge line of the diaper body semi-finished product continuum are gradually adsorbed and flipped 180° by negative pressure adsorption through the folding and adsorption holes, and folded on the skin side of the diaper body semi-finished product continuum to form a diaper semi-finished product;

[0011] The wrapping and folding unit includes a pair of vacuum box groups arranged along a first conveying path, the vacuum box groups have a group of conveying surfaces, one group of conveying surfaces is arranged downward, and the vacuum box groups absorb the diaper composite semi-finished product / the diaper semi-finished product and convey it along the first conveying path.

[0012] In a preferred embodiment, the folding unit also includes a folding plate group arranged below the vacuum box group; the folding plate group includes a first folding plate and a second folding plate, the first folding plate and the second folding plate have a contoured curved surface along the direction of the first conveying path, and a pair of elastic left and right waist stickers are arranged in the contoured curved surfaces of the first folding plate and the second folding plate, and are used to fold and shape a pair of folded elastic left and right waist stickers.

[0013] In a preferred embodiment, the folding adsorption unit further includes an air distribution pipe, one end of which is connected to the interior of the folding box and communicates with a plurality of folding adsorption holes, and the other end of the air distribution pipe is connected to the adsorption device.

[0014] In a preferred embodiment, the conveying unit comprises a first vacuum box, a first driving roller, a first driven roller and a first conveyor belt, and the first vacuum box is a cavity structure;

[0015] The first conveyor belt is arranged around the circumference of the first driving roller and the first driven roller, and the first vacuum box is located on the inner side of the first conveyor belt;

[0016] The first vacuum box has a first conveying surface, the first conveying surface is provided with a plurality of first holes, and the first conveying belt is provided with holes corresponding to the first holes.

[0017] In a preferred embodiment, the second conveying path also includes a first free roller located on the upstream side of the conveying unit and a gluing unit arranged on the upstream side of the cutting unit, the first free roller is used to guide the conveying path of a pair of elastic left and right waist tape continuums, and the gluing unit is used to apply hot melt adhesive on the composite surface of a pair of elastic left and right waist tape continuums.

[0018] In a preferred embodiment, the cutting unit includes a knife roller and a bottom roller, the knife roller includes a blade, and the bottom roller includes an anvil. When the blade of the knife roller abuts against the anvil of the bottom roller, a pair of elastic left and right waist patch continua are cut into a pair of elastic left and right waist patches of a predetermined length.

[0019] In a preferred embodiment, a plurality of adsorption holes are provided on the circumferential outer side surface of the bottom roller; a center line of the bottom roller is perpendicular to the first conveying surface of the first vacuum box of the conveying unit, and the bottom roller adsorbs the pair of cut elastic left and right waist stickers through the adsorption holes, and conveys and attaches the pair of elastic left and right waist stickers to both sides of the semi-finished diaper body continuum conveyed on the first vacuum box of the conveying unit.

[0020] In a preferred embodiment, the vacuum box group includes a second vacuum box and a third vacuum box arranged in parallel, the first packing folding plate is arranged below the second vacuum box, and the second packing folding plate is arranged below the third vacuum box;

[0021] The interiors of the second vacuum box and the third vacuum box are hollow structures, the lower surface of the second vacuum box forms a second conveying surface, the lower surface of the third vacuum box forms a third conveying surface, a second hole is provided on the second conveying surface, and a fourth hole is provided on the third conveying surface, wherein the second hole corresponds to the position of an outer edge line area of ​​the semi-finished diaper body continuum, and the fourth hole corresponds to the position of another outer edge line area of ​​the semi-finished diaper body continuum.

[0022] In a preferred embodiment, the second conveying surface is further provided with a third hole, the third conveying surface is further provided with a fifth hole, the third hole is located at the downstream side of the second vacuum box, and the fifth hole is located at the downstream side of the third vacuum box;

[0023] The third hole and the fifth hole respectively correspond to the positions of the left and right elastic waist patches of the folded semi-finished diaper.

[0024] In a preferred embodiment, the wrapping and folding unit further comprises a driving roller group, a driven roller group and a conveyor belt group;

[0025] The driven roller group includes a second driven roller arranged at both ends of the second vacuum box along the first conveying path, and a third driven roller arranged at both ends of the third vacuum box along the first conveying path;

[0026] The conveyor belt group includes a second conveyor belt and a third conveyor belt, wherein the second conveyor belt is arranged around the circumference of the driving roller group and the second driven roller, and the third conveyor belt is arranged around the circumference of the driving roller group and the third driven roller;

[0027] The second vacuum box is located on the inner side of the second conveyor belt, and the third vacuum box is located on the inner side of the third conveyor belt;

[0028] The second conveyor belt is provided with holes corresponding to the second hole and the third hole, and the third conveyor belt is provided with holes corresponding to the fourth hole and the fifth hole.

[0029] In a preferred embodiment, the wrapping and folding unit further comprises a roller group arranged on the first conveying path and located on the downstream side of the wrapping and folding plate group, and a pressing roller group corresponding to the roller group;

[0030] The roller group includes a first roller and a second roller, and the pressure roller group includes a first pressure roller and a second pressure roller; a first opening is formed at a downstream side of a second conveying surface of the second vacuum box, and a second opening is formed at a downstream side of a third conveying surface of the third vacuum box;

[0031] The first roller is installed in the second vacuum box and embedded in the first opening; the second roller is installed in the third vacuum box and embedded in the second opening;

[0032] The outer circumferential side of the first roller passes through the first opening and abuts against the first pressing roller, and the outer circumferential side of the second roller passes through the second opening and abuts against the second pressing roller.

[0033] In a preferred embodiment, the wrapping and folding unit further includes an adjusting component, and the adjusting component includes a connecting piece, a pair of adjusting rods and a pair of handles;

[0034] The second vacuum box and the third vacuum box are adjustably connected to the connecting member, and the connecting member is connected to the mounting base surface; one end of a pair of adjusting rods is adjustably connected to the second vacuum box and the third vacuum box respectively, and the other end of the pair of adjusting rods is connected to a pair of handles respectively;

[0035] When the handle is rotated, the adjusting rod drives the second vacuum box and / or the third vacuum box to move in a direction perpendicular to the first conveying path.

[0036] In a preferred embodiment, the first conveying path further comprises a second free roller for guiding the conveying path of the diaper body semi-finished product continuous body / the diaper semi-finished product;

[0037] The second free roller located at the downstream side of the wrapping and folding unit flips the semi-finished diaper with the skin side facing downward to a semi-finished diaper with the skin side facing upward and conveys it to the downstream side;

[0038] An embodiment of the present invention further provides a method for manufacturing elastic left and right waist tapes for diapers, comprising an elastic left and right waist tape processing step: processing a pair of elastic left and right waist tape continuums with magic hooks on one side on a second conveying path, and conveying them to the first conveying path; a diaper semi-finished product processing step: processing the diaper body semi-finished product continuum conveyed on the upstream side on the first conveying path to form a diaper semi-finished product;

[0039] In a preferred embodiment, on the second conveying path, a pair of elastic left and right waist tapes with magic hooks on one side are cut into a pair of elastic left and right waist tapes of predetermined length, and conveyed and attached to both sides of the diaper body semi-finished product continuum on the first conveying path to form a composite semi-finished diaper, wherein a portion of the pair of elastic left and right waist tapes is located outside the outer edge line of the diaper body semi-finished product continuum, and the skin side of the composite semi-finished diaper faces downward; on the first conveying path, the pair of elastic left and right waist tapes located outside the outer edge line of the diaper body semi-finished product continuum are gradually adsorbed and turned 180 degrees, and folded on the skin side of the diaper body semi-finished product continuum to form a semi-finished diaper;

[0040] In a preferred embodiment, on the first conveying path, a pair of the elastic left and right waist patches located outside the outer edge line of the diaper body semi-finished product continuous body are gradually adsorbed and turned 180 degrees by negative pressure adsorption, and folded on the skin side of the diaper body semi-finished product continuous body to form a diaper semi-finished product;

[0041] In a preferred embodiment, the process further includes a flipping step: flipping the semi-finished diaper with the skin side facing downward to a semi-finished diaper with the skin side facing upward and conveying the semi-finished diaper to the downstream side.

[0042] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least:

[0043] The present invention provides a folding system for elastic left and right waist stickers of diapers and a manufacturing method thereof, wherein a conveying unit for adsorbing the diaper body and the elastic left and right waist stickers is arranged below a cutting unit, thereby ensuring the stable conveyance of the diaper body and the elastic left and right waist stickers before folding. A folding adsorption unit is arranged on the downstream side of the conveying unit, and a pair of elastic left and right waist stickers are adsorbed toward the diaper body under the action of negative pressure air by using folding adsorption holes opened on both sides of the folding adsorption unit, thereby achieving the purpose of folding.

[0044] The present invention provides a wrapping and folding system for elastic left and right waist stickers of diapers and a manufacturing method thereof, which aims at wrapping and folding left and right waist stickers made of elastic materials with poor stiffness (rigidity) and thinner, and ensures that after being cut by a cutting unit, the elastic left and right waist stickers will not produce wrinkles, CD direction position shift and other poor transcription phenomena. The present invention has a simple structure, and during the wrapping and folding process, the elastic left and right waist stickers will not produce fluctuations, etc., so that the wrapping and folding performance is stable, and the wrapping and folding quality and precision are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 The diagram is a plan view of an unfolded disposable diaper in the prior art.

[0047] Figure 2 It is a plan view schematically showing the unfolded disposable diaper of the present invention.

[0048] Figure 3 It is a plan view of the disposable diaper of the present invention after the elastic left and right waist strips are folded.

[0049] Figure 4 It is a schematic diagram of a wrapping and folding system of elastic left and right waist patches of a diaper according to the present invention.

[0050] Figure 5 It is a top view of the transmission unit of the present invention.

[0051] Figure 6 It is a step diagram of the product processed by the packaging and folding system of the present invention.

[0052] Figure 7 It is a schematic diagram of the folding adsorption unit of the present invention gradually folding the left and right elastic waist patches.

[0053] Figure 8 It is a bottom view of the wrapping and folding unit of the present invention. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0056] The present invention provides a folding system for elastic left and right waist tapes of diapers, which is used in the production equipment of disposable diapers. After a pair of elastic left and right waist tapes on both sides of the disposable diaper are cut into predetermined lengths, they are conveyed and attached to the main body of the disposable diaper, and then the pair of elastic left and right waist tapes are folded toward the side of the diaper main body, so that the disposable diaper is convenient for subsequent product bagging.

[0057] In order to explain the present invention more clearly, it is necessary to explain the structure of the left and right waist patches made of elastic material. Figure 2 FIG. 1 is a plan view of the unfolded disposable diaper of the present invention. Figure 3 The figure shows a plan view of the folded elastic left and right waist patches of the disposable diaper of the present invention. The disposable diaper S (final formed product) has a mutually perpendicular length direction and width direction, and includes a diaper body S1 and a pair of elastic left and right waist patches S2 arranged on the rear side, wherein the elastic left and right waist patches S2 are compositely composed of an elastic material S21 and a magic hook S22, and the elastic material S21 can be an elastic film and elastic elastic band under the line, and is characterized in that it is thinner and less rigid than the spunbond non-woven fabric used as the substrate of the general left and right waist patches. The disposable diaper S has a skin side that contacts the skin when worn and a non-skin side away from the skin side. From the skin side (the side in contact with the skin), the magic hook S22 is composited on the top of the elastic material S21, and the magic hook S22 is a material with a hook-shaped fabric on one side, which has the characteristics of generating natural adhesion when attached to a fluffy fabric on the other side, and will naturally separate when pulled by hand. The disposable diaper S also includes a front waist tape S3 arranged on the non-skin side (the side not in contact with the skin) of the diaper body S1. The front waist tape S3 is a non-woven fabric or PP film-coil used to match the magic hook S22. When worn, the elastic left and right waist tapes S2 are fixed to the front waist tape S3 on the front side of the diaper body S1, so that the disposable diaper S is in a closed state, thereby forming a trouser shape with a waist opening and two leg openings.

[0058] In order to facilitate the subsequent product packing of the disposable diaper S, during the manufacturing process of the disposable diaper S, a pair of elastic waist tapes S2 on both sides need to be folded toward the diaper body S1 along the outer edge line S0 of the diaper body S1 in the width direction, such as Figure 3 shown.

[0059] The present invention provides a wrapping and folding system for elastic left and right waist patches of diapers, wherein the elastic left and right waist patches are made of elastic materials, and the wrapping and folding system is located in a process station in the middle of a disposable diaper manufacturing device. Therefore, the formed disposable diaper S is still in the process, and the diaper body S1 at this time is a diaper body semi-finished product continuum S1', that is, the diaper body S1 is still in a continuous and uncut state. A pair of elastic left and right waist patches S2 is also a pair of elastic left and right waist patch continuum S2' at this time, that is, a pair of elastic left and right waist patches S2 is still in a continuous and uncut state, but the elastic material S21 and the magic hook S22 have been compounded, that is, the compound surface of the elastic left and right waist patches S2 has been compounded with the magic hook S22.

[0060] The present invention provides a folding system for elastic left and right waist tapes of diapers, which cuts a pair of elastic left and right waist tape continuum S2' into a pair of elastic left and right waist tapes S2 of a predetermined length, and transfers and attaches the cut pair of elastic left and right waist tapes S2 to both sides of a diaper body semi-finished product continuum S1' to form a composite semi-finished diaper, and folds the pair of elastic left and right waist tapes S2 along the outer edge line S0 toward the diaper body S1 side in the width direction, thereby forming a diaper semi-finished product S'. The width direction is a direction perpendicular to the process direction, and the width direction is also called the CD direction.

[0061] like Figure 4 The schematic diagram of the wrapping and folding system of the elastic left and right waist patches of a diaper of the present invention is shown. Figure 5 A top view of the conveying unit of the present invention is shown, Figure 6 The step diagram of the product processed by the folding system of the present invention is shown. Figure 7 The schematic diagram of the folding adsorption unit of the present invention gradually folding the left and right elastic waist patches is shown. Figure 8 A bottom view of the folding unit of the present invention is shown.

[0062] Combination Figures 4 to 8 According to an embodiment of the present invention, a folding system for elastic left and right waist tapes of diapers is provided, comprising: a first conveying path L1 as a main path and a second conveying path L2 as a secondary path, wherein the second conveying path L2 is arranged above the first conveying path L1, and the second conveying path L2 is used to process a pair of elastic left and right waist tape continuum S2' having magic hooks on one side into a pair of elastic left and right waist tapes S2, and convey them to the first conveying path L1.

[0063] The first conveying path L1 is a main process path, the direction of which is the conveying direction of the device, and is used to form a conveying path for the main process of disposable diapers S. In the present invention, it is used to compound a pair of cut elastic left and right waist tapes S2 on the diaper body semi-finished product continuum S1' according to the distance of a disposable diaper S, and fold the elastic left and right waist tapes S2 along the outer edge line S0 of the diaper body semi-finished product continuum S1' toward the diaper body semi-finished product continuum S1'. In the embodiment of the present invention, the direction perpendicular to the conveying direction is the width direction or CD direction.

[0064] According to an embodiment of the present invention, a first free roller 1, a gluing device H, a conveying unit 2 and a cutting unit 3 are arranged on the second conveying path L2, and a conveying unit 4, a folding and adsorption unit 5, a wrapping unit 6, a transfer unit 7 and a second free roller 8 are arranged on the first conveying path L1.

[0065] In the second transmission path L2, the conveying unit 2 is arranged on the upstream side of the cutter unit 3, and the first free roller 1 is arranged on the upstream side of the conveying unit 2. The first free roller 1 is used to guide the conveying path of a pair of elastic left and right waist tape continuum S2'. The gluing unit H is arranged on the upstream side of the cutter unit 3. The gluing unit H is used to apply hot melt adhesive on the composite surface of a pair of elastic left and right waist tape continuum S2'. In this embodiment, two first free rollers 1 are arranged, and the gluing unit H is located above the path formed by the two first free rollers 1, and then the left and right waist tape continuum S2' enters the conveying unit 2. Of course, the gluing unit H can also be arranged above the conveying unit 2, as long as it is arranged before the pair of left and right waist tape continuum S2' enters the cutter unit 3, which can be determined according to actual conditions.

[0066] The conveying unit 2 is used to convey a pair of elastic left and right waist patch continuum S2' to the cutter unit 3 along the second conveying path L2. The conveying unit 2 can use negative pressure adsorption (such as setting a vacuum box structure) to ensure the stability and position accuracy of the conveying of the elastic left and right waist patch continuum S2' before cutting.

[0067] According to an embodiment of the present invention, the cutter unit 3 is arranged on the upstream side of the conveying unit 4, and is used to cut a pair of elastic left and right waist tape continuum S2' into a pair of elastic left and right waist tapes S2 of a predetermined length, and convey and attach the cut pair of elastic left and right waist tapes S2 to both sides of the diaper body semi-finished product continuum S1' conveyed by the conveying unit 4 in the first conveying path L1, so as to form a composite semi-finished diaper. Part of the pair of elastic left and right waist tapes S2 is located outside the outer edge line S0 of the diaper body semi-finished product continuum S1', and the diaper body semi-finished product continuum S1' has a skin side that contacts the skin when worn and a non-skin side away from the skin side.

[0068] The cutter unit 3 includes a knife roller 31 and a bottom roller 32. The knife roller 31 is located above the bottom roller 32. The knife roller 31 includes a blade (not shown in the figure), and the bottom roller 32 includes an anvil (not shown in the figure). When the blade of the knife roller 31 abuts against the anvil of the bottom roller 32, a pair of elastic left and right waist patch continuum S2' is cut into a pair of elastic left and right waist patches S2 of a predetermined length.

[0069] The bottom roller 32 is a hollow structure, and is externally connected to an adsorption device (such as a fan, etc.). A plurality of adsorption holes (not shown in the figure) are provided on the outer circumferential side of the bottom roller 32. A center line of the bottom roller 32 is perpendicular to the first conveying surface M1 (described below) of the first vacuum box 41 of the conveying unit 4. The bottom roller 32 adsorbs the cut pair of left and right waist stickers S2 through the adsorption holes, and conveys and attaches the pair of elastic left and right waist stickers S2 to both sides of the diaper body semi-finished product continuum S1' conveyed on the first vacuum box 41 of the conveying unit 4, forming a composite semi-finished diaper. That is, the bottom roller 32 uses the negative pressure generated by the adsorption device to adsorb the pair of elastic left and right waist stickers S2 on the adsorption holes on the surface of the bottom roller 32, and turns and conveys them to the first conveying path L1 to be composited with the diaper body semi-finished product continuum S1'.

[0070] Specifically, the bottom roller 32 is arranged above the conveying unit 4 on the first conveying path L1 and connected to the conveying unit 4 to composite a pair of elastic left and right waist tapes S2 on the set two side positions of the diaper body semi-finished product continuum S1' delivered by the first conveying path L1 to form a composite semi-finished diaper.

[0071] According to an embodiment of the present invention, the conveying unit 4 absorbs the composite semi-finished diaper (a pair of elastic left and right waist patches S2 are composited on the two sides of the diaper body semi-finished continuous body S1') by negative pressure adsorption and conveys it along the first conveying path L1, with the skin side of the composite semi-finished diaper facing downward. In a specific embodiment, the first conveying path L1 includes a second free roller 8 for guiding the conveying path of the diaper body semi-finished continuous body S1' and the conveying path of the diaper semi-finished S', the second free roller 8 for guiding the conveying path of the diaper body semi-finished continuous body S1' is located on the upstream side of the conveying unit 4, and the second free roller 8 for guiding the conveying path of the diaper semi-finished S' is located on the downstream side of the transfer unit 7.

[0072] The diaper body semi-finished product continuous body S1' is transferred to the transfer unit 4 via the second free roller 8 located on the upstream side of the transfer unit 4. That is, the second free roller 8 located on the upstream side of the transfer unit 4 guides the transfer path of the diaper body semi-finished product continuous body S1' and transfers the diaper body semi-finished product continuous body S1' to the transfer unit 4.

[0073] The conveying unit 4 includes a first vacuum box 41, a first driving roller 42, a first driven roller 43 and a first conveyor belt 44. The first conveyor belt 44 is arranged around the outside of the circumference of the first driving roller 42 and the first driven roller 43, and the first vacuum box 41 is located on the inside of the first conveyor belt 44. The first vacuum box 41 has a cavity structure inside, and is externally connected to an adsorption device (fan, etc.). The first vacuum box 41 is arranged along the first conveying path L1.

[0074] like Figure 5 As shown, the first vacuum box 41 has a first conveying surface M1, the first conveying surface is provided with a plurality of first holes 411, and the first conveying belt 44 is provided with holes corresponding to the first holes 411. The first conveying belt 44 is conveyed above the first conveying surface M1.

[0075] The first vacuum box 41 utilizes the negative pressure generated by the adsorption device to adsorb the diaper body semi-finished product continuous body S1 ′ and the pair of elastic left and right waist patches S2 onto the first conveyor belt 44 for conveyance.

[0076] When the cut elastic left and right waist tapes S2 adsorbed by the bottom roller 32 are compounded on the semi-finished diaper body continuum S1' adsorbed by the first conveyor belt 44 according to the distance of a disposable diaper S, the first conveyor belt 44 uses the negative pressure generated by the adsorption device to adsorb the semi-finished diaper body continuum S1' and the pair of elastic left and right waist tapes S2 on the first conveyor belt 44 as a whole, and convey them to the downstream side under the drive of the first driving roller 42. At this time, on the conveying unit 4, the pair of elastic left and right waist tapes S2 have been compounded on the two sides of the semi-finished diaper body continuum S1', forming a composite semi-finished diaper.

[0077] The vacuum adsorption structure of the conveying unit 4 of the present invention ensures that there will be no folds, wrinkles, or CD-direction position shifts during the conveying and attaching of the pair of elastic left and right waist stickers S2 to the semi-finished diaper body continuum S1', and that the semi-finished diaper body continuum S1' and the pair of elastic left and right waist stickers S2 are stably conveyed before being wrapped and folded.

[0078] According to the embodiment of the present invention, the wrapping and folding unit 6 and the folding and adsorption unit 5 are arranged up and down and connected with the downstream side of the conveying unit 4. A conveying channel is formed between the folding and adsorption unit 5 and the wrapping and folding unit 6, and the composite diaper semi-finished product (a pair of elastic left and right waist tapes S2 composited at the two side positions set by the diaper body semi-finished product continuum S1') is conveyed in the conveying channel.

[0079] According to an embodiment of the present invention, the folding adsorption unit 5 includes a folding box body 51 with a cavity structure, and a plurality of folding adsorption holes 511 are provided on two side surfaces C of the folding box body 51 perpendicular to the first conveying path. Through the folding adsorption holes 511, a pair of elastic left and right waist stickers S2 located outside the outer edge line S0 of the diaper body semi-finished product continuum S1' are gradually adsorbed and turned 180° by negative pressure adsorption, and folded on the skin side of the diaper body semi-finished product continuum S1', so as to form a diaper semi-finished product S'. Figure 6 and Figure 7 shown.

[0080] That is, the multiple folding adsorption holes 511 opened on the two side surfaces C of the folding box 51 along the CD direction gradually adsorb a pair of elastic left and right waist tapes S2 located outside the outer edge line S0 of the semi-finished diaper body continuum S1' by negative pressure adsorption 180°, and fold them on the skin side of the semi-finished diaper body continuum S1'. In this embodiment, the skin side of the semi-finished diaper body continuum S1' is set downward.

[0081] In a specific embodiment, the folding adsorption unit 5 also includes an air distribution pipe 52, one end of which is connected to the inside of the folding box 51 and communicates with multiple folding adsorption holes 511, and the other end of the air distribution pipe 52 is connected to the adsorption device (fan, etc.).

[0082] The folding box 51 uses the negative pressure air generated by the adsorption device (fan, etc.) to be introduced into the folding adsorption holes 511 on the two side surfaces C through the air distribution pipe 52, so that a pair of elastic left and right waist stickers S2 on both sides of the composite semi-finished product are adsorbed toward the position of the semi-finished continuous body S1' of the diaper body, thereby achieving a pair of elastic left and right waist stickers S2 gradually adsorbed and flipped 180°, and folded on the skin side of the semi-finished continuous body S1' of the diaper body.

[0083] The present invention uses a folding adsorption unit 5 and utilizes the property that a pair of elastic left and right waist stickers S2 adopts a thin elastic material S21 (thin material has a significant adsorption effect), and gradually adsorbs the pair of elastic left and right waist stickers S2 under the action of negative pressure air, so that the pair of elastic left and right waist stickers S2 are finally effectively folded to the position of the semi-finished product continuum S1' of the diaper body, ensuring that the elastic left and right waist stickers will not fluctuate during the subsequent folding process, so that the folding performance is stable, and the folding quality and accuracy are improved.

[0084] According to the embodiment of the present invention, the wrapping and folding unit 6 absorbs the composite semi-finished diaper / the semi-finished diaper S' by negative pressure absorption and conveys it along the first conveying path L1.

[0085] According to an embodiment of the present invention, the folding unit 6 includes a pair of vacuum box groups 61, a driving roller group 62, a driven roller group 63 and a conveyor belt group 64 arranged along the first conveying path L1 (conveying direction), the vacuum box group 61 has a group of conveying surfaces, one group of conveying surfaces is arranged downward, and the vacuum box group 61 adsorbs the diaper composite semi-finished product / diaper semi-finished product and conveys it along the first conveying path L1.

[0086] Specifically, the vacuum box group 61 includes a second vacuum box 611 and a third vacuum box 612 arranged in parallel. The lower surface of the second vacuum box 611 forms a second conveying surface M2, and the lower surface of the third vacuum box 612 forms a third conveying surface M3. The most upstream side of the folding adsorption unit 5 is approximately at the same position as the most upstream sides of the second conveying surface M2 and the third conveying surface M3, respectively, thereby ensuring that the conveying and folding of the composite semi-finished product can be carried out simultaneously, and ensuring the position accuracy and quality of the folding.

[0087] The second vacuum box 611 and the third vacuum box 612 have a cavity structure inside. The second conveying surface M2 of the second vacuum box 611 is provided with a second hole 6111 and a third hole 6112. The third conveying surface M3 of the third vacuum box 612 is provided with a fourth hole 6121 and a fifth hole 6122. The second hole 6111 corresponds to the position of one outer edge line area of ​​the semi-finished diaper body continuum S1', and the fourth hole 6121 corresponds to the position of another outer edge line area of ​​the semi-finished diaper body continuum S1'. The third hole 6112 is located at the downstream side of the second vacuum box 611, and the fifth hole 6122 is located at the downstream side of the third vacuum box 612. The third hole 6112 and the fifth hole 6122 respectively correspond to the positions of the elastic left and right waist patches S2 after the semi-finished diaper S' is folded.

[0088] The driven roller group 63 includes second driven rollers 631 disposed at both ends of the second vacuum box 611 along the first conveying path L1 (conveying direction), and third driven rollers 632 disposed at both ends of the third vacuum box 612 along the first conveying path L1 (conveying direction).

[0089] The conveyor belt set 64 includes a second conveyor belt 641 and a third conveyor belt 642. The second conveyor belt 641 is arranged around the outer circumference of the driving roller set 62 and the second driven roller 631, and the third conveyor belt 642 is arranged around the outer circumference of the driving roller set 62 and the third driven roller 632. The second vacuum box 611 is located on the inner side of the second conveyor belt 641, and the third vacuum box 612 is located on the inner side of the third conveyor belt 642. The second conveyor belt 641 and the third conveyor belt 642 are respectively conveyed below the second conveying surface M2 and the third conveying surface M3.

[0090] The second conveyor belt 641 has holes corresponding to the second hole 6111 and the third hole 6112 , and the third conveyor belt 642 has holes corresponding to the fourth hole 6121 and the fifth hole 6122 .

[0091] According to the embodiment of the present invention, the second hole 6111 corresponds to an outer edge line S0 region of the semi-finished diaper body continuum S1 ′, and the fourth hole 6121 corresponds to another outer edge line S0 region of the semi-finished diaper body continuum S1 ′.

[0092] The second vacuum box 611 and the third vacuum box 612 are respectively connected to external adsorption devices (fans, etc.), and negative pressure air is generated by the adsorption devices. Under the action of the adsorption devices, the composite semi-finished diaper is respectively adsorbed on the surfaces of the second conveyor belt 641 and the third conveyor belt 642 through the second hole 6111 of the second vacuum box 611 and the fourth hole 6121 of the third vacuum box 612 for transportation. At the same time, a pair of elastic left and right waist stickers S2 are gradually adsorbed and flipped 180° through the folding adsorption unit 5, and folded on the skin side of the diaper body semi-finished product continuum S1' to form a diaper semi-finished product S'.

[0093] During the folding process, the second hole 6111 and the fourth hole 6121 respectively absorb and fix the root of the outer edge line S0 (folding position) of the composite semi-finished diaper through the second conveyor belt 641 and the third conveyor belt 642, so that a pair of elastic left and right waist stickers S2 can be folded along the outer edge line S0.

[0094] In this embodiment, the second hole 6111 and the fourth hole 6121 are long holes arranged in an oblique line. Of course, other forms of holes can also be provided as long as the position of the outer edge line S0 area can be ensured to be adsorbed.

[0095] According to the embodiment of the present invention, the third hole 6112 is located at the downstream side of the second vacuum box 611, and the fifth hole 6122 is located at the downstream side of the third vacuum box 612. The third hole 6112 and the fifth hole 6122 respectively correspond to the positions of the elastic left and right waist stickers S2 after the folding of the semi-finished diaper S', and the negative pressure air generated by the adsorption device is used to adsorb the folded pair of elastic left and right waist stickers S2 through the third hole 6112 and the fifth hole 6122, fix the folded elastic left and right waist stickers S2 and transmit them to the downstream side, thereby ensuring the stability and folding accuracy of the folding process.

[0096] Specifically, the second vacuum box 611 and the third vacuum box 612 are respectively connected to external adsorption devices (fans, etc.), and the adsorption devices are used to produce negative pressure air. Under the action of the adsorption devices, the semi-finished diaper S' is adsorbed on the surfaces of the second conveyor belt 641 and the third conveyor belt 642 through the third hole 6112 of the second vacuum box 611 and the fifth hole 6122 of the third vacuum box 612 for conveyance.

[0097] It should be noted that in the present invention, a pair of elastic left and right waist tapes S2 are folded on the skin side of the semi-finished diaper body continuum S1' to form a semi-finished diaper S', and negative pressure air passes through the third hole 6112 and the fifth hole 6122, and penetrates the semi-finished diaper body continuum S1' (using the air permeability of the semi-finished diaper body continuum S1'), and the folded pair of elastic left and right waist tapes S2 are adsorbed on the skin side of the semi-finished diaper body continuum S1', and the semi-finished diaper S' is adsorbed on the surface of the second conveyor belt 641 and the third conveyor belt 642 for transmission.

[0098] In the conveying unit 4 of the present invention, the composite semi-finished diaper in which the elastic left and right waist patches S2 are composited to the diaper body semi-finished product continuum S1' is processed with the skin side facing downward. Therefore, the second conveying surface M2 of the second vacuum box 611 and the third conveying surface M3 of the third vacuum box 612 in the downstream folding unit 6 are arranged downward, and the non-skin side of the composite semi-finished diaper faces the second conveying surface M2 and the third conveying surface M3 respectively.

[0099] According to an embodiment of the present invention, the folding unit 6 further includes a roller group 65 arranged on the first transport path L1 at a downstream side of a folding plate group 68 (described below), and a pressing roller group 66 corresponding to the roller group 65 .

[0100] The roller group 65 includes a first roller 651 and a second roller 652, and the pressure roller group 66 includes a first pressure roller 661 and a second pressure roller 662. A first opening K1 is provided at a downstream side of the second conveying surface M2 of the second vacuum box 611, and a second opening K2 is provided at a downstream side of the third conveying surface M3 of the third vacuum box 612. The first roller 651 is installed in the second vacuum box 311 and is embedded in the first opening K1, and the second roller 652 is installed in the third vacuum box 612 and is embedded in the second opening K2.

[0101] The outer circumference of the first roller 651 passes through the first opening K1 and abuts against the first pressing roller 661 , and the outer circumference of the second roller 652 passes through the second opening K2 and abuts against the second pressing roller 662 .

[0102] The first roller 651 abuts against the first pressing roller 661, and the second roller 652 abuts against the second pressing roller 662, so that the pair of elastic left and right waist patches S2 after folding of the semi-finished diaper S' are clamped and pressed. The roller group 65 and the pressing roller group 66 are arranged to press the pair of elastic left and right waist patches S2 after folding, so that the folding of the elastic left and right waist patches S2 is fixed, and the folded elastic left and right waist patches S2 are better shaped.

[0103] In a preferred embodiment, in order to ensure that the elastic left and right waist patches S2 are better folded and better shaped after being adsorbed and folded by the folding and adsorption unit 5 , a folding plate group 68 is further provided under the vacuum box 61 .

[0104] The packing and folding plate group 68 includes a first packing and folding plate 681 and a second packing and folding plate 682 . The first packing and folding plate 681 is arranged below the second vacuum box 611 , and the second packing and folding plate 682 is arranged below the third vacuum box 612 .

[0105] The first packing folding plate 681 and the second packing folding plate 682 have contoured curved surfaces along the first conveying path L1. A pair of elastic left and right waist patches S2 are arranged in the contoured curved surfaces of the first packing folding plate 681 and the second packing folding plate 682 for folding and shaping a pair of folded elastic left and right waist patches S2.

[0106] The contoured curved surfaces of the first packing folding plate 681 and the second packing folding plate 682 are used to fold and shape the pair of elastic left and right waist tapes S2 that have been adsorbed and folded by the folding and adsorption unit 5 on the skin side of the diaper body semi-finished continuous body S1' to form the diaper semi-finished product S', so as to assist in consolidating the folding of the folding and adsorption unit 5. The contoured curved surfaces are appropriately selected by those skilled in the art, as long as the pair of elastic left and right waist tapes S2 attached to both sides of the diaper body semi-finished continuous body S1' can be folded on the skin side of the diaper body semi-finished continuous body S1', and the present invention does not make any specific restrictions.

[0107] In some embodiments, the folding plate group 68 may not be provided, and the folding and adsorption unit 5 can directly gradually adsorb and fold a pair of elastic left and right waist stickers S2 onto the skin side of the semi-finished diaper body continuum S1' to form a semi-finished diaper S'. The details have been explained in detail above and will not be repeated here.

[0108] According to an embodiment of the present invention, the wrapping and folding unit 6 further includes an adjusting component 67, and the adjusting component 67 is used to adjust the positions of the second vacuum box 611 and the third vacuum box 612 in the CD direction respectively.

[0109] Specifically, the adjustment component 67 includes a connecting member 671, a pair of adjustment rods 672 and a pair of handles 673. The second vacuum box 611 and the third vacuum box 612 are adjustably connected to the connecting member 671, and the connecting member 671 is connected to the installation base surface, that is, the second vacuum box 611 and the third vacuum box 612 can move on the connecting member 671 along the CD direction.

[0110] One end of the pair of adjustment rods 672 is adjustably connected to the second vacuum box 611 and the third vacuum box 612 , respectively, and the other end of the pair of adjustment rods 672 is connected to a pair of handles 673 , respectively.

[0111] When the handle 673 is rotated, the adjusting rod 672 drives the second vacuum box 611 and / or the third vacuum box 612 to move in a direction perpendicular to the first conveying path L1 (CD direction), so that the second vacuum box 611 and / or the third vacuum box 612 are adjusted respectively along the CD direction to adapt the second vacuum box 611 and the third vacuum box 612 to reach the ideal position during the folding process and the different positions of the second vacuum box 611 and the third vacuum box 612 in the folding of diapers of different sizes. The operation is simple and convenient, and the positioning accuracy is high.

[0112] According to an embodiment of the present invention, a folding system for disposable diapers with elastic left and right waist tapes further includes a transfer unit 7 arranged on the first conveying path L1, and the transfer unit 7 is arranged on the downstream side of the folding unit 6. After a pair of elastic left and right waist tapes S2 are folded along the outer edge line S0 of the diaper body semi-finished product continuous body S1' by the folding adsorption unit 5 and the folding unit 6, a diaper semi-finished product S' is formed and conveyed by the transfer unit 7. The first conveying path L1 further includes a second free roller 8 for guiding the conveying path of the diaper semi-finished product S'; wherein, a second free roller 8 located on the downstream side of the folding unit 6 turns the diaper semi-finished product S' with the skin side facing downward into the diaper semi-finished product S' with the skin side facing upward and conveys it to the downstream side for processing in the next step.

[0113] This embodiment also provides a method for manufacturing elastic left and right waist tapes for diapers, including a process for processing the elastic left and right waist tapes, a process for processing semi-finished products for diapers, and a process for turning over.

[0114] Elastic left and right waist patch processing step: On the second conveying path L2, a pair of elastic left and right waist patch continuum S2' with magic hooks on one side is processed and conveyed to the first conveying path L1.

[0115] Diaper semi-finished product processing step: On the first conveying path L1, the diaper body semi-finished product continuous body S1' conveyed on the upstream side is processed to form a diaper semi-finished product S'.

[0116] Turning process: the semi-finished diaper S' with the skin side facing downward is turned over to be the semi-finished diaper S' with the skin side facing upward and conveyed to the downstream side.

[0117] On the second transmission path L2, a pair of elastic left and right waist tape continuum S2' with magic hooks on one side is cut into a pair of elastic left and right waist tapes S2 of predetermined length, and is transmitted and attached to both sides of the diaper body semi-finished product continuum S1' on the first transmission path L1 to form a composite semi-finished diaper. Part of the pair of elastic left and right waist tapes S2 is located outside the outer edge line S0 of the diaper body semi-finished product continuum S1', and the skin side of the composite semi-finished diaper faces downward. On the first transmission path L1, a pair of elastic left and right waist tapes S2 located outside the outer edge line S0 of the diaper body semi-finished product continuum S1' is gradually adsorbed and flipped 180° by negative pressure adsorption, and folded on the skin side of the diaper body semi-finished product continuum S1' to form a semi-finished diaper S'.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A folding system for elastic left and right waist patches of a diaper, characterized in that: The wrapping and folding system comprises: a first conveying path as a main path and a second conveying path as a secondary path, wherein the second conveying path is arranged above the first conveying path, and the second conveying path is used to process a pair of elastic left and right waist patch continuums with magic hooks on one side and convey them to the first conveying path; A conveying unit, a folding and adsorption unit, and a folding unit are arranged on the first conveying path, and a conveying unit and a cutting unit are arranged along the process direction on the second conveying path; The cutter unit is arranged at the upstream side of the conveying unit, and is used to cut the pair of elastic left and right waist tape continuum into a pair of elastic left and right waist tapes of predetermined length, and convey and attach the cut pair of elastic left and right waist tapes to both sides of the diaper body semi-finished product continuum conveyed by the conveying unit in the first conveying path to form a composite semi-finished diaper, wherein a portion of the pair of elastic left and right waist tapes is located outside the outer edge line of the diaper body semi-finished product continuum; the diaper body semi-finished product continuum has a skin side in contact with the skin when worn and a non-skin side away from the skin side; The conveying unit absorbs the composite semi-finished diaper and conveys it along the first conveying path in a negative pressure adsorption manner, with the skin side of the composite semi-finished diaper facing downward; The wrapping and folding unit and the folding and adsorption unit are arranged up and down and connected with the downstream side of the conveying unit, and a conveying channel is formed between the folding and adsorption unit and the wrapping and folding unit, and the composite semi-finished diaper is conveyed in the conveying channel; The folding and adsorption unit comprises a folding box with a cavity structure, and a plurality of folding and adsorption holes are provided on two sides of the folding box perpendicular to the first conveying path, and a pair of elastic left and right waist patches located outside the outer edge line of the diaper body semi-finished product continuum are gradually adsorbed and flipped 180° by negative pressure adsorption through the folding and adsorption holes, and folded on the skin side of the diaper body semi-finished product continuum to form a diaper semi-finished product; The wrapping and folding unit includes a pair of vacuum box groups arranged along a first conveying path, the vacuum box groups have a group of conveying surfaces, one group of conveying surfaces is arranged downward, and the vacuum box groups absorb the diaper composite semi-finished product / the diaper semi-finished product and convey it along the first conveying path.

2. The folding system according to claim 1, characterized in that: The wrapping and folding unit further comprises a wrapping and folding plate group arranged below the vacuum box group; The wrapping and folding plate group includes a first wrapping and folding plate and a second wrapping and folding plate, wherein the first wrapping and folding plates have contoured curved surfaces along the direction of the first conveying path, and a pair of the elastic left and right waist patches are arranged in the contoured curved surfaces of the first wrapping and folding plates and the second wrapping and folding plates, and are used to fold and shape a pair of the folded elastic left and right waist patches.

3. The folding system according to claim 1, characterized in that: The folding adsorption unit further comprises an air distribution pipe, one end of which is connected to the interior of the folding box and communicates with a plurality of folding adsorption holes, and the other end of which is connected to an adsorption device.

4. The folding system according to claim 1, characterized in that: The conveying unit comprises a first vacuum box, a first driving roller, a first driven roller and a first conveyor belt, wherein the first vacuum box is a cavity structure; The first conveyor belt is arranged around the circumference of the first driving roller and the first driven roller, and the first vacuum box is located on the inner side of the first conveyor belt; The first vacuum box has a first conveying surface, the first conveying surface is provided with a plurality of first holes, and the first conveying belt is provided with holes corresponding to the first holes.

5. The folding system according to claim 1, characterized in that: The second conveying path also includes a first free roller located on the upstream side of the conveying unit and a gluing unit arranged on the upstream side of the cutting unit, wherein the first free roller is used to guide the conveying path of a pair of elastic left and right waist tape continuums, and the gluing unit is used to apply hot melt adhesive on the composite surface of the pair of elastic left and right waist tape continuums.

6. The folding system according to claim 4, characterized in that: The cutting unit includes a knife roller and a bottom roller, the knife roller includes a blade, and the bottom roller includes an anvil. When the blade of the knife roller abuts against the anvil of the bottom roller, a pair of elastic left and right waist patch continua are cut into a pair of elastic left and right waist patches of a predetermined length.

7. The folding system according to claim 6, characterized in that: A plurality of adsorption holes are provided on the circumferential outer side surface of the bottom roller; a center line of the bottom roller is perpendicular to the first conveying surface of the first vacuum box of the conveying unit, and the bottom roller adsorbs the pair of cut elastic left and right waist stickers through the adsorption holes, and conveys and attaches the pair of elastic left and right waist stickers to both sides of the semi-finished diaper body continuum conveyed on the first vacuum box of the conveying unit.

8. The folding system according to claim 2, characterized in that: The vacuum box group comprises a second vacuum box and a third vacuum box arranged in parallel, the first packing folding plate is arranged below the second vacuum box, and the second packing folding plate is arranged below the third vacuum box; The second vacuum box and the third vacuum box have a cavity structure inside, the lower surface of the second vacuum box forms a second conveying surface, the lower surface of the third vacuum box forms a third conveying surface, the second conveying surface is provided with a second hole, and the third conveying surface is provided with a fourth hole. The second hole corresponds to an outer edge line area of ​​the semi-finished diaper body continuum, and the fourth hole corresponds to another outer edge line area of ​​the semi-finished diaper body continuum.

9. The folding system according to claim 8, characterized in that: A third hole is also provided on the second conveying surface, and a fifth hole is also provided on the third conveying surface, wherein the third hole is located at a downstream side of the second vacuum box, and the fifth hole is located at a downstream side of the third vacuum box; The third hole and the fifth hole respectively correspond to the positions of the left and right elastic waist patches of the folded semi-finished diaper.

10. The folding system according to claim 9, characterized in that: The wrapping and folding unit also includes a driving roller group, a driven roller group and a conveyor belt group; The driven roller group includes a second driven roller arranged at both ends of the second vacuum box along the first conveying path, and a third driven roller arranged at both ends of the third vacuum box along the first conveying path; The conveyor belt group includes a second conveyor belt and a third conveyor belt, wherein the second conveyor belt is arranged around the circumference of the driving roller group and the second driven roller, and the third conveyor belt is arranged around the circumference of the driving roller group and the third driven roller; The second vacuum box is located on the inner side of the second conveyor belt, and the third vacuum box is located on the inner side of the third conveyor belt; The second conveyor belt is provided with holes corresponding to the second hole and the third hole, and the third conveyor belt is provided with holes corresponding to the fourth hole and the fifth hole.

11. The folding system according to claim 10, characterized in that: The folding unit further comprises a roller group arranged on the first conveying path and located at the downstream side of the folding plate group, and a pressing roller group corresponding to the roller group; The roller group includes a first roller and a second roller, and the pressure roller group includes a first pressure roller and a second pressure roller; a first opening is formed at a downstream side of a second conveying surface of the second vacuum box, and a second opening is formed at a downstream side of a third conveying surface of the third vacuum box; The first roller is installed in the second vacuum box and embedded in the first opening; the second roller is installed in the third vacuum box and embedded in the second opening; The outer circumferential side of the first roller passes through the first opening and abuts against the first pressing roller, and the outer circumferential side of the second roller passes through the second opening and abuts against the second pressing roller.

12. The folding system according to claim 11, characterized in that: The wrapping and folding unit further comprises an adjusting component, which comprises a connecting piece, a pair of adjusting rods and a pair of handles; The second vacuum box and the third vacuum box are adjustably connected to the connecting member, and the connecting member is connected to the mounting base surface; One end of a pair of the adjusting rods is adjustably connected to the second vacuum box and the third vacuum box respectively, and the other end of the pair of the adjusting rods is connected to a pair of the handles respectively; When the handle is rotated, the adjusting rod drives the second vacuum box and / or the third vacuum box to move in a direction perpendicular to the first conveying path.

13. The folding system according to claim 1, characterized in that: The first conveying path further comprises a second free roller for guiding the conveying path of the diaper body semi-finished product continuum / the diaper semi-finished product; The second free roller located at the downstream side of the wrapping and folding unit flips the semi-finished diaper with the skin side facing downward to a semi-finished diaper with the skin side facing upward and conveys it to the downstream side.

14. A method for manufacturing diaper elastic left and right waist tapes using a wrapping and folding system for diaper elastic left and right waist tapes according to any one of claims 1 to 13, characterized in that: include: Elastic left and right waist patch processing step: on the second conveying path, a pair of elastic left and right waist patch continuum with magic hooks on one side is processed and conveyed to the first conveying path; Diaper semi-finished product processing step: On the first conveying path, the diaper body semi-finished product continuous body conveyed on the upstream side is processed to form a diaper semi-finished product.

15. The method for manufacturing elastic left and right waist tapes for diapers according to claim 14, characterized in that : On the second conveying path, a pair of elastic left and right waist tape continuum with magic hooks on one side is cut into a pair of elastic left and right waist tapes of predetermined length, and the pair of elastic left and right waist tapes are conveyed and attached to both sides of the diaper body semi-finished product continuum on the first conveying path to form a diaper composite semi-finished product, wherein a portion of the pair of elastic left and right waist tapes is located outside the outer edge line of the diaper body semi-finished product continuum, and the skin side of the diaper composite semi-finished product faces downward; On the first conveying path, a pair of elastic left and right waist patches located outside the outer edge line of the diaper body semi-finished continuous body are gradually adsorbed and flipped 180 degrees, and folded on the skin side of the diaper body semi-finished continuous body to form a diaper semi-finished product.

16. The method for manufacturing the elastic left and right waist tapes of diapers according to claim 15, characterized in that : On the first conveying path, a pair of elastic left and right waist patches located outside the outer edge line of the diaper body semi-finished continuous body are gradually adsorbed and flipped 180° by negative pressure adsorption, and folded on the skin side of the diaper body semi-finished continuous body to form a diaper semi-finished product.

17. The method for manufacturing elastic left and right waist tapes for diapers according to claim 16, characterized in that : The method also includes a flipping step of flipping the semi-finished diaper with the skin side facing downward to a semi-finished diaper with the skin side facing upward and conveying the semi-finished diaper to the downstream side.

Images