Absorption article waistline composite production line

Abstract

The utility model relates to an absorption article waistline composite production line which comprises a pre-composite module and an online composite module. The pre-compounding module comprises a rubber band feeding frame, a tension controller, a first conveying roller set, a second conveying roller set, a first unwinding device, a first gluing device, a first compounding roller set and a first winding machine. The online composite module comprises a composite material unwinding device, a third conveying roller set, a slitting device, a second gluing device, a second unwinding device, a second composite roller set and a second winding machine. According to the elastic waistline composite production line, the influence of broken rubber bands on the whole waistline composite production line can be reduced, the production stability and production efficiency of the elastic waistline can be improved, and the productivity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of absorbent product processing, and in particular to a waist composite production line for absorbent products. Background Art

[0002] Disposable absorbent products, such as diapers, pull-up pants and other products, have elastic waistbands. The elastic waistband usually adopts a structure of multiple layers of non-woven fabrics and composite rubber bands. In the existing elastic waistband processing process, the multiple layers of non-woven fabrics and rubber bands are usually pulled and fed synchronously, and after gluing and scraping, they are composited online through a composite roller. For example, a Chinese patent [CN219021940U] discloses an elastic waistband production equipment, including a rubber band glue gun and a composite traction device for compositely pressing a first non-woven fabric, multiple rubber bands and a second non-woven fabric into a composite material.

[0003] Generally, the number of elastic bands in an elastic waist structure is large, reaching more than 40. Affected by factors such as the quality of the elastic bands and the process of equipment, the phenomenon of elastic band breakage during the compounding process is inevitable. In the actual production process, the phenomenon of elastic band breakage occurs once or more every few days, and the breakage is relatively frequent. When the material breaks, it is necessary to change the material. The specific operation is to stop the production line, and the workers will connect the broken elastic bands according to the direction of the rubber band conveying. Due to the long overall conveying stroke of the elastic band, it takes a long time to stop and connect when the material breaks, usually more than tens of minutes. The elastic waist production line produces at a high speed, and the output can generally reach 600 pieces / min. Calculated based on a single breakage and a 30-minute stop, each rubber band breakage will cause a production capacity lag of 18,000 pieces, seriously affecting the production rhythm and production efficiency of the elastic waist. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present invention aims to provide an absorbent product waist composite production line, which can reduce the impact of elastic band breakage on the overall waist composite production line, help improve the stability and production efficiency of elastic waist production, and increase production capacity.

[0005] The absorbent article waist compounding production line disclosed in the present invention comprises a pre-compounding module and an online compounding module;

[0006] The pre-compounding module includes a rubber unwinding rack, a tension controller, a first conveying roller group, a second conveying roller group, a first unwinding device, a first gluing device, a first compounding roller group and a first winding machine;

[0007] A pre-combination route is provided between the rubber band unwinding rack and the first winding machine;

[0008] The tension controller is arranged at the discharge end of the rubber band discharge rack and is used to adjust the tension of the rubber band;

[0009] The first conveying roller group is arranged along the pre-combination route for guiding the conveying of the rubber band, and at least one group of the second conveying roller group is arranged in parallel with the first conveying roller group for carrying the rubber band for connection;

[0010] The number of the first unwinding devices is at least two, which are arranged beside the pre-combination route and are used to unwind the non-woven fabric to the pre-combination route;

[0011] The first gluing device is provided on the side of the non-woven fabric unwinding line of at least one group of the first unwinding devices close to the pre-combination route, and the first gluing device is used to glue the elastic band and / or the non-woven fabric;

[0012] The first composite roller group is located at one end of the pre-combination route close to the first winder, and the first composite roller group includes two first composite rollers arranged opposite to each other on both sides of the pre-combination route, and the two first composite rollers cooperate to composite the non-woven fabric and the elastic band to form a composite material, and then roll it into a roll at the first winder;

[0013] The online composite module includes a composite material unwinding device, a third conveying roller group, a slitting device, a second gluing device, a second unwinding device, a second composite roller group and a second winder;

[0014] An online composite material unwinding device and the second winder are provided with an online composite line;

[0015] The third conveying roller group is arranged along the online composite line and is used for guiding the conveying of the composite material;

[0016] The slitting device is arranged on the online composite line and is used for slitting the composite material;

[0017] The second glue coating device is arranged on the online composite line and is located at the rear end of the slitting device, and is used for coating glue on the composite material after slitting;

[0018] The second unwinding device is arranged beside the online composite line and is used for unwinding the outer bottom nonwoven fabric to the online composite line;

[0019] The second composite roller group is located at one end of the online composite line close to the second winder, and the second composite roller group includes two second composite rollers arranged opposite to each other on both sides of the online composite line. The two second composite rollers cooperate to composite the composite material with the outer bottom layer non-woven fabric, and wind them into a roll at the second winder.

[0020] Preferably, the number of the first unwinding devices is two, which are respectively arranged on the upper and lower sides of the pre-combination route.

[0021] Preferably, the online compound module further includes:

[0022] An automatic material switching device, wherein the number of the composite material unwinding devices is two, and the automatic material switching device is arranged at the rear ends of the two composite material unwinding devices, and is used for switching the unwinding composite material.

[0023] Preferably, the online compounding module further comprises a first tension adjusting component and a second tension adjusting component, wherein the first tension adjusting component and the second tension adjusting component are respectively arranged at the front end and the rear end of the slitting device for adjusting the tension of the composite material.

[0024] Preferably, the online compound module further comprises a first deviation correcting device and a second deviation correcting device, wherein the first deviation correcting device is arranged at the rear end of the first tension adjusting assembly, and the second deviation correcting device is arranged at the rear end of the second tension adjusting assembly.

[0025] Preferably, the winding specification of the first winding machine is the same as the unwinding specification of the composite material unwinding device.

[0026] The absorbent product waist composite production line disclosed in the present invention has the advantages that, by setting a pre-composite module and an online composite module, the elastic band and the non-woven fabric are pre-composited in the pre-composite module to form a composite material, and the composite material is online composited with the outer bottom layer non-woven fabric through the online composite module to form a waist structure, and by reasonably configuring the production rhythm between the pre-composite module and the online composite module, the elastic band at the waist position is pre-composited in advance, thereby avoiding the risk of elastic band breakage during the online composite process, so that the elastic band breakage in the pre-composite module will not affect the production of the online composite module at the machine end, and effectively reducing the impact of the elastic band breakage on the overall waist composite production line.

[0027] The pre-compounding module can adjust the conveying tension of the rubber band by setting a tension controller at the discharge end of the rubber band unloading rack, which is conducive to the stable conveying of the rubber band, reduces the risk of breakage during the pre-compounding process of the rubber band, and further improves the stability of the waist compounding production line.

[0028] The present invention also provides a second conveying roller group carrying spare rubber bands for splicing. When the rubber band breaks, the spare rubber band can be immediately spliced. Compared with the entire waistband composite production line, the rubber band travel of the pre-compound module is shorter and does not need to pass through multiple workstations, which reduces the difficulty of splicing and reduces the time spent on splicing. This is conducive to rapid repair when the rubber band breaks, further improving the production efficiency of the elastic waistband and increasing production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the pre-compound module described in this embodiment;

[0030] Figure 2 Schematic diagram of the structure of the online compound module described in this embodiment.

[0031] Description of reference numerals:

[0032] 1-pre-compounding module, 11-elastic unwinding rack, 12-tension controller, 13-first conveying roller group, 14-second conveying roller group, 15-first unwinding device, 16-first gluing device, 17-first composite roller group, 18-first winder;

[0033] 2-online composite module, 201-composite material unwinding device, 202-third conveying roller group, 203-slitting device, 204-second gluing device, 205-second unwinding device, 206-second composite roller group, 207-second winder, 208-automatic material changing device, 209-first tension adjustment component, 210-second tension adjustment component, 211-first deviation correction device, 212-second deviation correction device. DETAILED DESCRIPTION

[0034] like Figure 1 , Figure 2 As shown, a waist compounding production line for absorbent products disclosed in the present invention comprises a pre-compounding module 1 and an online compounding module 2.

[0035] For more details, please refer to Figure 1 The pre-compounding module 1 includes a rubber unwinding rack 11, a tension controller 12, a first conveying roller group 13, a second conveying roller group 14, a first unwinding device 15, a first gluing device 16, a first composite roller group 17 and a first winder 18.

[0036] The rubber band unwinding rack 11 and the first winder 18 are arranged horizontally opposite to each other, and a pre-combination route is provided between the rubber band unwinding rack 11 and the first winder 18 , and the pre-combination route points from the rubber band unwinding rack 11 to the first winder 18 .

[0037] The tension controller 12 is arranged at the discharge end of the rubber band discharge rack 11, and is used to adjust the tension of the rubber band. Specifically, the tension controller 12 is used to keep the discharge tension of the rubber band constant within an appropriate range. The tension controller 12 can use the Lijing WLT online tension controller produced by Tianjin Lijing Microelectronic Equipment Co., Ltd., or a constant tension rubber band unwinding device as described in the existing patent [CN217201381 U], both of which can keep the unwinding tension of the rubber band within an appropriate range and reduce the risk of the rubber band breaking due to excessive tension.

[0038] The first conveying roller group 13 includes a plurality of first conveying rollers, which are arranged along the pre-combination route and are used to guide the rubber band to be conveyed along the pre-combination route. The first conveying rollers can be powered rollers or unpowered rollers.

[0039] The number of the first unwinding devices 15 is at least two. In the present embodiment, the number of the first unwinding devices 15 is two, and a conventional fabric unwinding machine can be used. They are respectively arranged on the upper and lower sides of the pre-combination route, that is, on the upper and lower sides of the horizontally conveyed elastic band. The rolled non-woven fabric is placed on the first unwinding device 15, and is guided into the pre-combination route by a guide wheel or a guide roller, and is conveyed forward along the pre-combination route synchronously with the elastic band.

[0040] The first gluing device 16 is provided on one side of the non-woven fabric unwinding line of at least one group of first unwinding devices 15 close to the pre-combination route. The first gluing device 16 is used to glue the rubber band and / or the non-woven fabric. Specifically, in the present embodiment, there are two first gluing devices 16, which are respectively arranged on the inner sides of the non-woven fabric unwinding lines of the two first unwinding devices 15. The first gluing device 16 can be a conventional non-woven fabric gluing scraper, such as the 100L non-woven fabric gluing machine produced by Shenzhen Fengjun Machinery Equipment Co., Ltd. The unwound non-woven fabric and rubber band are coated with hot melt adhesive by the gluing roller on the gluing machine, and the hot melt adhesive is evenly scraped on the cloth through the gluing plate, so that the non-woven fabric and the rubber band are evenly coated with the hot melt adhesive.

[0041] The first composite roller group 17 is arranged at the end of the pre-composite route, that is, one end close to the first winder 18. The first composite roller group 17 includes two first composite rollers relatively arranged on the upper and lower sides of the pre-composite route. The first composite roller has a relatively close motion mechanism, such as a hydraulic mechanism, which drives the two first composite rollers to be relatively close to each other, so as to pressurize and composite the non-woven fabric and the rubber band passing between the two first composite rollers. The composite roller material can be a steel roller or a silicone roller, and the composite pressure can be set at 0.2 to 0.3MPa, so that the rubber band and the non-woven fabric are firmly bonded by hot melt adhesive to form a composite material.

[0042] The composite material is a structure in which two layers of non-woven fabrics sandwich a plurality of elastic bands, and the overall shape is a long sheet, which is rolled up by the first winder 18 at the end for subsequent online composite processing.

[0043] In order to achieve rapid connection when the rubber band is broken, the present embodiment is provided with at least one group of second conveying roller groups 14, which are arranged in parallel with the first conveying roller group 13 and are used to carry the rubber band for connection. When the rubber band conveyed on the first conveying roller group 13 is broken, the spare rubber band on the second conveying roller group 14 can be used for rapid connection to improve the efficiency of rubber band connection and repair.

[0044] like Figure 2 As shown, the online composite module 2 of this embodiment includes a composite material unwinding device 201, a third conveying roller group 202, a slitting device 203, a second gluing device 204, a second unwinding device 205, a second composite roller group 206 and a second winder 207.

[0045] An online composite line is provided between the composite material unwinding device 201 and the second winder 207 . The third conveying roller set 202 includes a plurality of third conveying rollers arranged along the online composite line for guiding the composite material to be conveyed along the online composite line.

[0046] The slitting device 203 is arranged on the online compounding line and is used for slitting the composite material. Usually, the slitting device 203 can select a conventional cloth slitting machine, and cut the composite material into two pieces by the slitting blade, which are subsequently compounded on both sides of the outer bottom layer non-woven fabric to form elastic areas at the front waist and the back waist.

[0047] The second gluing device 204 is arranged on the online composite line and is located at the rear end of the slitting device 203. It is used to glue the composite material after slitting. When the composite material after slitting passes through the second gluing device 204, hot melt adhesive is evenly coated on the side bonded to the outer bottom layer non-woven fabric. The structure of the second gluing device 204 is the same as that of the first gluing device 16, which can be understood by referring to the above description and will not be repeated here.

[0048] The second unwinding device 205 is arranged beside the online composite line, and is used for unwinding the outer bottom layer non-woven fabric to the online composite line. Usually, the outer bottom layer non-woven fabric is rolled and placed on the second unwinding device 205. The second unwinding device 205 can be a conventional unwinding machine. The outer bottom layer non-woven fabric is unrolled to the online composite line through the guidance of the second unwinding device 205 and a plurality of guide wheels or guide rollers, and after entering the online composite line, it is horizontally stacked with the composite material and transported forward.

[0049] The second composite roller group 206 is located at one end of the online composite line close to the second winder 207. The second composite roller group 206 includes two second composite rollers arranged opposite to each other on both sides of the online composite line. The structure of the second composite roller group 206 is the same as that of the first composite roller group 17, which can be understood by referring to the above description and will not be repeated here. The second composite roller group 206 is used to provide composite pressure so that the outer bottom layer non-woven fabric and the composite material are bonded under the action of hot melt adhesive to form an elastic waist structure, and are rolled into a roll under the winding action of the second winder 207.

[0050] Furthermore, the online compound module 2 of this embodiment also includes:

[0051] The automatic material changing device 208 and the composite material unwinding device 201 are two in number and are arranged side by side. The automatic material changing device 208 is arranged at the rear ends of the two composite material unwinding devices 201 and is used to switch the composite materials to be unwound. Specifically, the automatic material changing device 208 is a commonly used device in this field and is used to automatically change the unwound materials. The automatic material changing device 208 can be used as an automatic material changing device and a material changing method for a sanitary product roll material as described in the existing patent [CN102167237B], or other types of automatic material changing devices can be installed according to actual production needs to realize the automatic material changing function. The present embodiment does not limit this. Composite material rolls are loaded on both composite material unwinding devices 201. The two composite material rolls are pulled outwards to the two feed ends mounted on the automatic material changing device 208 respectively. When one of the composite material rolls is unwound to the tail material, the automatic material changing device 208 can automatically change the material to another roll of composite material, so that there is no need to stop the machine when changing materials, thereby further improving production efficiency.

[0052] Furthermore, in this embodiment, the online compound module 2 further includes a first tension adjustment component 209 and a second tension adjustment component 210, which are respectively arranged at the front end and the rear end of the slitting device 203, and are used to adjust the flatness of the material before and after slitting to reduce the wrinkling of the material. The tension adjustment component can specifically select an existing tension rod (or tension swing rod), which uses a plurality of long rods with adjustable angles to make the long rods press against the material being transported to adjust the tightness of the material, thereby adjusting the tension.

[0053] Furthermore, in this embodiment, the online compounding module 2 also includes a first deflection correcting device 211 and a second deflection correcting device 212. The first deflection correcting device 211 is arranged at the rear end of the first tension adjustment component 209, and the second deflection correcting device 212 is arranged at the rear end of the second tension adjustment component 210. Specifically, the first deflection correcting device 211 and the second deflection correcting device 212 can both use the PS-160B deflection correcting controller produced by Dongguan Huama Electromechanical Technology Co., Ltd., which can realize a variety of alignment methods such as following the edge, following the line, and aligning the fabric, which can effectively prevent skewing and affect the slitting and compounding effects.

[0054] More specifically, the winding specifications of the first winder 18 are the same as the unwinding specifications of the composite material unwinding device 201, that is, the inner diameter of the composite material roll formed after winding by the first winder 18 is adapted to the inner diameter of the unwinding place of the composite material unwinding device 201, so that the composite material roll formed by winding can be directly transferred to the composite material unwinding device 201 for unwinding, which is convenient for use.

[0055] The following will combine the above content to fully describe the working process of the absorbent product waist composite production line of this embodiment:

[0056] The rolled rubber band raw material is placed on the rubber band unwinding rack 11, and the non-woven fabric raw material is placed on the first unwinding device 15. The rubber band and the non-woven fabric are pulled outward, and are successively passed through the first conveying roller group 13, the first gluing device 16, and the first composite roller group 17, and then are loaded on the first winder 18. Each device is started. Under the pulling action of the first winder 18, the rubber band and the non-woven fabric are coated with hot melt adhesive through the first gluing device 16, and then enter the first composite roller group 17. Under the pressure and composite action of the two first composite rollers, the rubber band and the non-woven fabric are firmly bonded by the hot melt adhesive to form a structure in which two layers of non-woven fabrics sandwich the rubber band, and are wound up at the first winder 18 to form a composite material roll.

[0057] The composite material roll is transferred to the composite material unwinding device 201 of the online composite module 2, and the material roll of the outer bottom layer non-woven fabric is loaded on the second unwinding device 205, and the composite material is pulled outward, and is successively passed through the automatic material changing device 208, the first tension adjustment component 209, the first deviation correction device 211, the slitting device 203, the second tension adjustment component 210, the second deviation correction device 212, the second gluing device 204, and the second composite roller group 206, and then is loaded on the second winder 207. At the same time, the outer bottom layer non-woven fabric is pulled from the second unwinding device 205 into the online composite circuit, and is stacked with the composite material and transported forward to form a waist structure with front and rear waist elastic areas.

[0058] In a specific embodiment, the absorbent product waist composite production line of this embodiment can be used to produce a 5-layer structure of outer bottom layer non-woven fabric + composite non-woven fabric + elastic band + composite non-woven fabric + outer non-woven fabric, and can also be used to produce a 6-layer structure of outer bottom layer non-woven fabric + inner bottom layer non-woven fabric + composite non-woven fabric + elastic band + composite non-woven fabric + outer non-woven fabric. The above-mentioned elastic waist structure can effectively alleviate wearing marks due to the increase in the number of non-woven fabric layers.

[0059] The present invention provides a pre-compounding module 1 and an online compounding module 2, wherein the rubber band and the non-woven fabric are pre-compounded in the pre-compounding module 1 to form a composite material, and the composite material is online compounded with the outer bottom layer non-woven fabric through the online compounding module 2 to form a waist structure. By reasonably configuring the production rhythm between the pre-compounding module 1 and the online compounding module 2, the rubber band at the waist position is pre-compounded in advance, thereby avoiding the risk of rubber band breakage during the online compounding process, so that the rubber band breakage in the pre-compounding module 1 will not affect the production of the online compounding module 2 at the machine end, and effectively reducing the impact of the rubber band breakage on the overall waist compounding production line.

[0060] The pre-compounding module 1 is provided with a tension controller 12 at the discharge end of the rubber band unloading rack 11, so as to adjust the conveying tension of the rubber band, which is beneficial to the stable conveying of the rubber band, reduces the risk of breakage during the pre-compounding process of the rubber band, and further improves the stability of the waist compounding production line.

[0061] The present disclosure also provides a second conveying roller group 14 to carry spare rubber bands for splicing. When the rubber band breaks, the spare rubber band can be immediately spliced. Compared with the entire waistband composite production line, the rubber band travel of the pre-composite module 1 is shorter and does not need to pass through multiple workstations, which reduces the difficulty of splicing and reduces the time spent on splicing. This is conducive to rapid repair when the rubber band breaks, further improving the production efficiency of the elastic waistband and increasing production capacity.

[0062] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0063] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present disclosure.

Claims

1. A waist compounding production line for absorbent products, characterized in that: Includes pre-compound modules and online compound modules; The pre-compounding module includes a rubber unwinding rack, a tension controller, a first conveying roller group, a second conveying roller group, a first unwinding device, a first gluing device, a first compounding roller group and a first winding machine; A pre-combination route is provided between the rubber band unwinding rack and the first winding machine; The tension controller is arranged at the discharge end of the rubber band discharge rack and is used to adjust the tension of the rubber band; The first conveying roller group is arranged along the pre-combination route for guiding the conveying of the rubber band, and at least one group of the second conveying roller group is arranged in parallel with the first conveying roller group for carrying the rubber band for connection; The number of the first unwinding devices is at least two, which are arranged beside the pre-combination route and are used to unwind the non-woven fabric to the pre-combination route; The first gluing device is provided on the side of the non-woven fabric unwinding line of at least one group of the first unwinding devices close to the pre-combination route, and the first gluing device is used to glue the elastic band and / or the non-woven fabric; The first composite roller group is located at one end of the pre-combination route close to the first winder, and the first composite roller group includes two first composite rollers arranged opposite to each other on both sides of the pre-combination route, and the two first composite rollers cooperate to composite the non-woven fabric and the elastic band to form a composite material, and then roll it into a roll at the first winder; The online composite module includes a composite material unwinding device, a third conveying roller group, a slitting device, a second gluing device, a second unwinding device, a second composite roller group and a second winder; An online composite material unwinding device and the second winder are provided with an online composite line; The third conveying roller group is arranged along the online composite line and is used for guiding the conveying of the composite material; The slitting device is arranged on the online composite line and is used for slitting the composite material; The second glue coating device is arranged on the online composite line and is located at the rear end of the slitting device, and is used for coating glue on the composite material after slitting; The second unwinding device is arranged beside the online composite line and is used for unwinding the outer bottom nonwoven fabric to the online composite line; The second composite roller group is located at one end of the online composite line close to the second winder, and the second composite roller group includes two second composite rollers arranged opposite to each other on both sides of the online composite line. The two second composite rollers cooperate to composite the composite material with the outer bottom layer non-woven fabric, and wind them into a roll at the second winder.

2. The absorbent product waist compounding production line according to claim 1, characterized in that: The number of the first unwinding devices is two, which are respectively arranged on the upper and lower sides of the pre-combination route.

3. The absorbent product waist compounding production line according to claim 1, characterized in that: The online composite module also includes: An automatic material switching device, wherein the number of the composite material unwinding devices is two, and the automatic material switching device is arranged at the rear ends of the two composite material unwinding devices, and is used for switching the unwinding composite material.

4. The absorbent product waist compounding production line according to claim 3, characterized in that: The online compounding module further comprises a first tension adjusting component and a second tension adjusting component, wherein the first tension adjusting component and the second tension adjusting component are respectively arranged at the front end and the rear end of the slitting device for adjusting the tension of the composite material.

5. The absorbent product waist compounding production line according to claim 4, characterized in that: The online compound module further includes a first deviation correcting device and a second deviation correcting device, wherein the first deviation correcting device is arranged at the rear end of the first tension adjusting assembly, and the second deviation correcting device is arranged at the rear end of the second tension adjusting assembly.

6. The absorbent product waist compounding production line according to any one of claims 1 to 5, characterized in that: The winding specification of the first winding machine is the same as the unwinding specification of the composite material unwinding device.

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