Device and method for heating and compounding multilayer materials for disposable sanitary products

Abstract

The present invention discloses a multi-layer material heating and compounding device and method for disposable sanitary products. In the device, a heating chamber is provided in a compound roller and rotates relative to the heating chamber. A compound roller is also provided in the compound roller. The compound roller rotates relative to the compound roller. The compound strip on the compound roller periodically extends from the side wall of the compound roller. The anvil roller provided on the outside of the compound roller cooperates with the compound roller to form a compound roller group. The method is that the multi-layer material is superimposed and enters the compound roller, and is transported forward with the rotation of the compound roller. It is first preheated through the area corresponding to the heating chamber, and then when it reaches the anvil roller, it is heated and compounded again through the cooperation of the anvil roller and the compound roller, and then sent out after forming a composite material. The present invention adopts the method of preheating first, then performing secondary heating and compounding at the same time, which can effectively shorten the sealing and pressing cycle of the product, improve the compounding effect, avoid the phenomenon of cracking of the product due to weak adhesion, and improve its processing and production efficiency and product quality.

Description

Technical Field

[0001] The invention relates to the manufacturing field of disposable sanitary products, and in particular to a multi-layer material heating and compounding device and method for disposable sanitary products. Background Art

[0002] In the production line of disposable sanitary products, the processing of elastic waist structure is an indispensable part of diaper production. With the continuous exploration and experimentation of product manufacturers to reduce the production cost of products, equipment for online production of elastic waist structure has also emerged. The elastic waist is generally formed by the composite of multiple layers of materials. There are two main commonly used composite methods: the first is to use the spraying composite method, which is to spray or apply glue between the layers of materials and then composite. This method is relatively simple, but the appearance of the elastic waist after composite molding is not ideal, and it is easy to have wrinkles on the surface of the material. In addition, in the subsequent processing, the glue is easy to produce loose adhesion and odor due to changes in control factors such as temperature and pressure; the second is to directly heat press through the pressing roller, and heat the multiple layers of materials while pressing them with power, but this method is prone to cracking due to loose adhesion, and the material pressing process requires a large composite power and a long composite time, which is not conducive to the control of production costs and the improvement of production efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a multi-layer material heating and compounding device for disposable sanitary products, which can effectively improve the compounding effect of elastic waist products and enhance their processing efficiency and product quality.

[0004] Another object of the present invention is to provide a method for heating and compounding multiple layers of materials for disposable sanitary products by means of the above-mentioned device.

[0005] The technical scheme of the present invention is: a multi-layer material heating and compounding device for disposable sanitary products, comprising a compounding roller, a heating chamber, a compounding roller, a fixed shaft and an anvil roller, the compounding roller is installed on the fixed shaft through a bearing seat, a heating chamber is arranged inside the compounding roller, and the heating chamber is fixedly installed on the fixed shaft, the compounding roller rotates relative to the heating chamber, a compounding roller is also arranged inside the compounding roller, the compounding roller rotates relative to the compounding roller, and the compounding strip on the compounding roller periodically extends from the side wall of the compounding roller, an anvil roller is arranged outside the compounding roller, and the anvil roller cooperates with the compounding roller to form a compounding roller group. Among them, the product is conveyed along the rotation of the compounding roller, and in the process of the product following the rotation of the compounding roller, the heating chamber is first used to preliminarily heat (i.e. preheat) the part of the product that needs to be compounded, and when the product follows the compounding roller to rotate to the anvil roller, the compounding roller and the anvil roller cooperate to perform secondary heating and compounding on the part of the product that needs to be compounded, thereby completing the heating and compounding process between the multi-layer materials.

[0006] The composite roller includes a first outer roller, a second outer roller, a heat insulation plate and a sealing plate. Along the axial direction of the composite roller, the first outer roller and the second outer roller are respectively located at the two ends of the composite roller. A plurality of heat insulation plates and a plurality of sealing plates are arranged between the first outer roller and the second outer roller. Along the circumferential direction of the composite roller, the heat insulation plates and the sealing plates are arranged alternately. A hot air groove is arranged on each sealing plate. Among them, the heat insulation plate corresponds to the part of the product that does not need to be heated and composited. The heat insulation plate has a heat insulation function for this part. The sealing plate corresponds to the heating and composite part of the product. The hot air groove arranged on the sealing plate, on the one hand, allows the hot air from the heating chamber to pass through the hot air groove to heat the product. On the other hand, in the process of secondary heating and composite of the composite roller and the anvil roller, the hot air groove can allow the composite strip on the composite roller to extend and directly act on the product.

[0007] The composite roller comprises a composite roller body and a composite fixing part, wherein the composite fixing part is arranged on the side wall of the composite roller body, a first heating tube is arranged in the composite fixing part, and a composite strip is arranged on the outer side of the composite fixing part. When the composite roller rotates to form a composite roller group with the anvil roller, the composite strip extends out from the hot air groove on the sealing plate.

[0008] In the composite roller, a first transmission gear is fixed on the inner wall of the first outer roller, and the first transmission gear rotates following the rotation of the composite roller (that is, the first transmission gear is also installed on the fixed shaft through the bearing seat); a second transmission gear is provided on the rotating shaft of the composite roller, and a transition gear is also provided between the first transmission gear and the second transmission gear. When the composite roller rotates, the first transmission gear follows the rotation, and drives the second transmission gear to rotate through the transition gear, and the second transmission gear drives the composite roller to rotate, so that the composite strip on the composite roller periodically extends from the hot air groove on the sealing plate, and cooperates with the anvil roller to complete the thermal composite action. During the composite action, the composite strip is also heated by the first heating pipe.

[0009] The heating chamber is fan-shaped as a whole, and includes a chamber, a heating net, a sealing felt and a second heating pipe. The chamber is mounted on a fixed shaft and located on the inner side of the composite drum. The heating net is arranged on the outer peripheral arc surface of the chamber. The outer periphery of the chamber is also provided with a sealing felt. The chamber is provided with a second heating pipe, and one side of the chamber is also provided with an air vent. Among them, a sealed air passage is arranged in the chamber, and the second heating pipe is installed on both sides of the air passage. The air vent on one side of the chamber is externally connected to the air compressor unit, and the external compressed air enters the chamber from the air vent, flows through the air passage, and is heated by the second heating pipe. There are dense small holes on the heating net, and the heated air flows out through the small holes on the heating net and flows to the inner surface of the composite drum. Since the chamber is sealed with sealing felt around it, the hot air is sealed between the outer side of the chamber and the inner side of the composite drum. Finally, the hot air flows to the heating part required by the product through the two hot air grooves on the sealing plate to heat the product.

[0010] The anvil roller includes a rubber-coated roller, an anvil roller shaft, a fixed seat, a driving motor, a rocker and a clamping cylinder. The anvil roller shaft is arranged at the center of the rubber-coated roller, the power output end of the driving motor is connected to one end of the anvil roller shaft, the anvil roller shaft is eccentrically installed in the fixed seat, one end of the rocker is arranged on the anvil roller shaft, and the other end of the rocker is connected to the clamping cylinder. Among them, the outer surface of the rubber-coated roller is coated with silica gel, and its surface is relatively soft, which can well cooperate with the composite roller to form an embossed shape and realize the composite function of the product; the driving motor independently generates power for the rubber-coated roller, so that the rotation speed of the anvil roller can be independently adjusted according to the actual situation of the product conveying speed, and rotate synchronously; the eccentric setting of the anvil roller shaft in the fixed seat drives the rocker through the clamping cylinder, and the rocker drives the anvil roller shaft to rotate, and its eccentricity can be adjusted and controlled. By using the change of its eccentricity, the clamping force between the anvil roller and the composite roller can be adjusted to adapt it to the composite process requirements of the product.

[0011] The multi-layer material heating composite device is also provided with a mounting bracket, and the fixed shaft and the fixing seat in the anvil roller are respectively arranged on the mounting bracket; the main body of the mounting bracket is a plate-shaped structure, and after installation, the composite roller and the rubber-coated roller in the anvil roller are located on one side of the mounting bracket. The mounting bracket serves as the mounting base of the entire multi-layer material heating composite device, and is used to stably install the various components of the heating composite device on the one hand, and to connect and install with other component equipment on the product production line on the other hand.

[0012] The composite roller is also connected to a transmission box, which is located on the other side of the mounting bracket; after the transmission shaft of the transmission box passes through the mounting bracket, a third transmission gear is provided at the end of the transmission shaft, an internal gear is installed on one end face of the composite roller, and the third transmission gear is meshed with the internal gear. The transmission box is externally connected to a power drive device (such as a motor, etc.) corresponding to the composite roller. After the power enters the transmission box and is decelerated, it is transmitted to the composite roller by the transmission shaft through the cooperation of the third transmission gear and the internal gear, driving the composite roller to rotate. During the rotation of the composite roller, it is transmitted to the composite roller through the first transmission gear, the transition gear and the second transmission gear, driving the composite roller to rotate synchronously with the running speed of the product.

[0013] The multi-layer material heating and compounding device is also provided with a material guide roller, which is arranged on the mounting bracket and parallel to one side of the rubber-coated roller. The material guide roller mainly includes a roller, a roller shaft and a roller seat, the roller is mounted on the roller shaft, and the roller shaft is mounted on the mounting bracket through the roller seat. After the product is thermally compounded under the cooperation of the anvil roller and the compounding roller, it can be sent from the material guide roller to the equipment corresponding to the next processing step.

[0014] The present invention realizes a multi-layer material heating and compounding method for disposable sanitary products through the above-mentioned heating and compounding device, specifically: the multi-layer materials constituting the product are stacked and enter the compounding roller, and are conveyed forward as the compounding roller rotates. They are first preheated in the area corresponding to the heating chamber, and then continue to be conveyed forward. When they reach the anvil roller, they are heated and compounded again through the cooperation of the anvil roller and the compounding roller, and are sent out after forming a composite material.

[0015] When the above-mentioned multi-layer material heating and compounding device and method for disposable sanitary products are used, the principle is: by setting a heating chamber in the compounding roller, cooperating with the sealing plate and the hot air groove on the compounding roller, the multi-layer material product (especially the waist products for disposable diapers) is preheated before being compounded, and then continued to be transported to the compounding roller group, and the anvil roller and the compounding roller cooperate to perform secondary heating and compounding. In this process, the compounding cycle of the product can be effectively shortened, and the compounding effect of the product can be improved, thereby improving its processing production efficiency and product quality. At the same time, by utilizing the structural design of the compounding roller, the heating chamber and the compounding roller are integrated into one, and the rotation of the compounding roller is used to drive the compounding roller to move synchronously, which can simplify the overall structure of the heating and compounding device and improve the accuracy of product compounding.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The multi-layer material heating and compounding device and method adopts a method of preheating first, then secondary heating and compounding at the same time, which can effectively shorten the sealing and pressing cycle of the product and improve the compounding effect of the product, avoiding the occurrence of cracking of the product due to weak adhesion, thereby improving its processing production efficiency and product quality.

[0018] In the multi-layer material heating and compounding device, the surface of the compounding roller is distributed with alternately arranged sealing plates and heat insulation plates. The heat insulation plates are used to insulate the parts of the product that do not need to be heated and compounded. The sealing plates and the hot air grooves provided therewith can, on the one hand, allow the hot air from the heating chamber to pass through the hot air grooves to preheat the parts of the product that need to be heated and compounded. On the other hand, during the secondary heating and compounding process of the compounding roller and the anvil roller, the hot air grooves can allow the compound strips on the compounding roller to extend and directly act on the product. The structure is flexible to use. The heating chamber and the compounding roller can be integrated into the compounding roller by using the structure, which can effectively simplify the overall structure of the heating and compounding device and further reduce the equipment cost.

[0019] In the multi-layer material heating and compounding device, the anvil roller shaft of the anvil roller is eccentrically arranged, and the anvil roller shaft can be driven to rotate by the arrangement of the clamping cylinder and the rocker rod. The clamping force between the anvil roller and the compounding roller can be adjusted by utilizing the change of the eccentricity, so that it can be adapted to the compounding process requirements of the product, and is flexible and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the multi-layer material heating composite device.

[0021] Figure 2 for Figure 1 A schematic diagram of the back structure of the multilayer material heating composite device shown.

[0022] Figure 3 for Figure 1 A longitudinal cross-sectional view of the multi-layer material heating composite device is shown.

[0023] Figure 4 To remove the mounting bracket, Figure 1 Schematic diagram of the connection structure between the middle composite roller and the transmission box.

[0024] Figure 5 Schematic diagram of the installation structure of the heating chamber and the composite roller after the composite roller is removed.

[0025] Figure 6 Schematic diagram of the structure of the heating chamber.

[0026] Figure 7 It is a schematic diagram of the structure of the composite roller.

[0027] Figure 8 It is a schematic diagram of the structure of the anvil roller.

[0028] Fig. 9 It is a schematic diagram of the structure of the guide roller.

[0029] Fig.10 This is a schematic diagram of the process principle when the multi-layer material heating composite device is used.

[0030] In the above figures, the components indicated by the reference numerals are as follows: 1 is a composite roller, 2 is a heating chamber, 3 is a composite roller, 4 is a fixed shaft, 5 is an anvil roller, 6 is a mounting bracket, 7 is a guide roller, 8 is a transmission box, and 9 is a bearing seat;

[0031] 10 is a first outer drum, 11 is a second outer drum, 12 is a heat insulation board, 13 is a sealing board, and 13-1 is a hot air tank;

[0032] 14 is a composite roller body, 15 is a composite fixing member, 16 is a first heating tube, 17 is a composite strip, 18 is a first transmission gear, 19 is a second transmission gear, 20 is a transition gear, and 37 is a mounting side plate;

[0033] 21 is a cavity, 22 is a heating net, 23 is a sealing felt, 24 is a second heating pipe, and 25 is a vent;

[0034] 26 is a rubber-coated roller, 27 is a fixed seat, 28 is a driving motor, 29 is a swing rod, and 30 is a pressing cylinder;

[0035] 31 is a transmission shaft of the transmission box, 32 is a third transmission gear, and 33 is an internal gear;

[0036] 34 is a roller, 35 is a roller shaft, and 36 is a roller seat;

[0037] A is the preheating area and B is the heat sealing area. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0039] Example

[0040] The present embodiment provides a multi-layer material heating and compounding device for disposable sanitary products, which can be applied to the processing of elastic waist products of disposable diapers.

[0041] like Figure 1 or Figure 2 As shown, the multi-layer material heating and compounding device mainly includes a compounding roller 1, a heating chamber 2, a compounding roller 3, a fixed shaft 4, an anvil roller 5, a mounting bracket 6, a material guide roller 7 and a transmission box 8. Figure 3As shown, the composite roller is installed on the fixed shaft through the bearing seat 9, a heating chamber is provided in the composite roller, and the heating chamber is fixedly installed on the fixed shaft, the composite roller rotates relative to the heating chamber, a composite roller is also provided in the composite roller, the composite roller rotates relative to the composite roller, and the composite strip on the composite roller periodically extends from the side wall of the composite roller, an anvil roller is provided on the outer side of the composite roller, and the anvil roller cooperates with the composite roller to form a composite roller group. Among them, the product is transported along the rotation of the composite roller. In the process of the product following the rotation of the composite roller, the heating chamber is first used to preliminarily heat (i.e. preheat) the part of the product that needs to be composited. When the product follows the composite roller to rotate to the anvil roller, the composite roller and the anvil roller cooperate to perform secondary heating and composite on the part of the product that needs to be composited, thereby completing the heating composite process between the multilayer materials. In this embodiment, the specific structure of each main mechanism is as follows:

[0042] like Figure 1 As shown, the composite roller includes a first outer roller 10, a second outer roller 11, a heat insulation board 12 and a sealing board 13. Along the axial direction of the composite roller, the first outer roller and the second outer roller are respectively located at the two ends of the composite roller. A plurality of heat insulation boards and a plurality of sealing boards are arranged between the first outer roller and the second outer roller. Along the circumferential direction of the composite roller, the heat insulation boards and the sealing boards are arranged alternately; each sealing board is provided with a hot air groove 13-1. Among them, the heat insulation board corresponds to the part of the product that does not need to be heated and composited, and the heat insulation board has a heat insulation function for this part. The sealing board corresponds to the heating and composite part of the product. The hot air groove provided on the sealing board can heat the product after the hot air from the heating chamber passes through the hot air groove. On the other hand, in the process of secondary heating and composite of the composite roller and the anvil roller, the hot air groove can allow the composite strip on the composite roller to extend and directly act on the product.

[0043] like Figure 7 As shown, the composite roller includes a composite roller body 14 and a composite fixing member 15. The composite fixing member is arranged on the side wall of the composite roller body. A first heating tube 16 is arranged in the composite fixing member. A composite strip 17 is arranged on the outer side of the composite fixing member. When the composite roller rotates to form a composite roller group with the anvil roller, the composite strip extends from the hot air groove on the sealing plate. When the composite roller is installed, both ends of the rotating shaft of the composite roller are respectively installed in the corresponding installation side plates 37 through bearings, and then each installation side plate is fixedly installed on the fixed shaft. Figure 3 or Figure 5As shown, in the composite roller, a first transmission gear 18 is fixed on the inner wall of the first outer roller, and the first transmission gear rotates following the rotation of the composite roller (that is, the first transmission gear is also installed on the fixed shaft through the bearing seat); a second transmission gear 19 is provided on the rotating shaft of the composite roller, and a transition gear 20 is also provided between the first transmission gear and the second transmission gear. When the composite roller rotates, the first transmission gear follows the rotation, and drives the second transmission gear to rotate through the transition gear, and the second transmission gear drives the composite roller to rotate, so that the composite strip on the composite roller periodically extends from the hot air groove on the sealing plate, and cooperates with the anvil roller to complete the thermal composite action. During the composite action, the composite strip is also heated by the first heating pipe.

[0044] like Figure 5 or Figure 6 As shown, the heating cavity is fan-shaped as a whole, and the heating cavity includes a cavity 21, a heating net 22, a sealing felt 23 and a second heating pipe 24. The cavity is installed on a fixed shaft and is located on the inner side of the composite drum. The heating net is arranged on the outer peripheral arc surface of the cavity. The outer periphery of the cavity is also provided with a sealing felt. The cavity is provided with a second heating pipe, and a vent 25 is also provided on one side of the cavity. Among them, a sealed air passage is arranged in the cavity, and the second heating pipe is installed on both sides of the air passage. The vent on one side of the cavity is externally connected to the air compressor unit, and the external compressed air enters the cavity from the vent, flows through the air passage, and is heated by the second heating pipe. There are dense small holes on the heating net, and the heated air flows out through the small holes on the heating net and flows to the inner surface of the composite drum. Since the cavity is sealed with sealing felts around it, the hot air is sealed between the outer side of the cavity and the inner side of the composite drum. Finally, the hot air flows to the heating part required by the product through the two hot air grooves on the sealing plate to heat the product.

[0045] like Figure 8 or Figure 2 As shown, the anvil roller includes a rubber-coated roller 26, an anvil roller shaft (located in the rubber-coated roller, not shown in the figure), a fixed seat 27, a driving motor 28, a swing rod 29 and a pressing cylinder 30. The anvil roller shaft is arranged at the center of the rubber-coated roller, the power output end of the driving motor is connected to one end of the anvil roller shaft, the anvil roller shaft is eccentrically installed in the fixed seat, one end of the swing rod is arranged on the anvil roller shaft, and the other end of the swing rod is connected to the pressing cylinder. Among them, the outer surface of the rubber-coated roller is coated with silica gel, and its surface is relatively soft, which can well cooperate with the composite roller to form an embossed shape and realize the composite function of the product; the driving motor independently generates power for the rubber-coated roller, so that the rotation speed of the anvil roller can be independently adjusted according to the actual situation of the product conveying speed, and rotate synchronously; the eccentric setting of the anvil roller shaft in the fixed seat drives the swing rod through the pressing cylinder, and the swing rod drives the anvil roller shaft to rotate, and its eccentricity can be adjusted and controlled. By using the change of its eccentricity, the pressing force between the anvil roller and the composite roller can be adjusted to adapt to the composite process requirements of the product.

[0046] In the above-mentioned multi-layer material heating composite device, the mounting base of each component is a mounting bracket 6, and the fixing seats in the fixed shaft and the anvil roller are respectively arranged on the mounting bracket; the main body of the mounting bracket is a plate-like structure. After installation, Figure 1 As shown, the composite roller, the rubber-coated roller in the anvil roller and the roller of the guide roller are located on one side of the mounting bracket. The mounting bracket serves as the mounting base of the entire multi-layer material heating and compounding device. On the one hand, it is used to stably install the various components of the heating and compounding device, and on the other hand, it is used for connection and installation with other components on the product production line.

[0047] like Figure 2 or Figure 4 As shown, the transmission box connected to the composite roller is located on the other side of the mounting bracket; after the transmission shaft 31 of the transmission box passes through the mounting bracket, a third transmission gear 32 is provided at the end of the transmission shaft, and an internal gear 33 is installed on one end face of the composite roller, and the third transmission gear is meshed with the internal gear. Among them, the transmission box is externally connected to a power drive device (such as a motor, etc.) corresponding to the composite roller. After the power enters the transmission box and is decelerated, it is transmitted to the composite roller by the transmission shaft through the cooperation of the third transmission gear and the internal gear, driving the composite roller to rotate. During the rotation of the composite roller, it is transmitted to the composite roller through the above-mentioned first transmission gear, transition gear and second transmission gear, driving the composite roller to rotate synchronously with the running speed of the product.

[0048] like Figure 1 As shown in FIG. 1 , the guide roller is arranged on the mounting bracket and parallel to one side of the rubber-coated roller. Fig. 9 As shown, the guide roller mainly includes a roller 34, a roller shaft 35 and a roller seat 36. The roller is mounted on the roller shaft, and the roller shaft is mounted on the mounting bracket through the roller seat. After the product is thermally laminated under the cooperation of the anvil roller and the composite roller, it can be sent from the guide roller to the equipment corresponding to the next processing step.

[0049] This embodiment uses the above-mentioned heating and compounding device to implement a multi-layer material heating and compounding method for disposable sanitary products, specifically:

[0050] like Fig.10 As shown, along the direction of the arrow, the multiple layers of materials constituting the product are stacked and enter the composite roller. As the composite roller rotates, they are transported forward, first passing through the area corresponding to the heating chamber (i.e., preheating area A) for preheating, and then continue to be transported forward. When they reach the anvil roller (i.e., enter the heat sealing and pressing area B), they are heated and compounded again through the cooperation of the anvil roller and the composite roller. After forming a composite material, they are sent out from the material guide roller.

[0051] When the above-mentioned multi-layer material heating and compounding device and method for disposable sanitary products are used, the principle is: by setting a heating chamber in the compounding roller, cooperating with the sealing plate and the hot air groove on the compounding roller, the multi-layer material product (especially the waist products for disposable diapers) is preheated before being compounded, and then continued to be transported to the compounding roller group, and the anvil roller and the compounding roller cooperate to perform secondary heating and compounding. In this process, the compounding cycle of the product can be effectively shortened, and the compounding effect of the product can be improved, thereby improving its processing production efficiency and product quality. At the same time, by utilizing the structural design of the compounding roller, the heating chamber and the compounding roller are integrated into one, and the rotation of the compounding roller is used to drive the compounding roller to move synchronously, which can simplify the overall structure of the heating and compounding device and improve the accuracy of product compounding.

[0052] As described above, the present invention can be better implemented. The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention; that is, all equivalent changes and modifications made according to the content of the present invention are covered by the scope of protection required by the claims of the present invention.

Claims

1. A multi-layer material heating and compounding device for disposable sanitary products, characterized in that: It includes a composite roller, a heating chamber, a composite roller, a fixed shaft and an anvil roller. The composite roller is installed on the fixed shaft through a bearing seat. The composite roller is provided with a heating chamber, and the heating chamber is fixedly installed on the fixed shaft. The composite roller rotates relative to the heating chamber. A composite roller is also provided in the composite roller. The composite roller rotates relative to the composite roller, and the composite strip on the composite roller periodically extends from the side wall of the composite roller. An anvil roller is provided on the outer side of the composite roller. The anvil roller cooperates with the composite roller to form a composite roller group. The composite drum comprises a first outer drum, a second outer drum, a heat insulation plate and a sealing plate. Along the axial direction of the composite drum, the first outer drum and the second outer drum are respectively located at two ends of the composite drum. A plurality of heat insulation plates and a plurality of sealing plates are arranged between the first outer drum and the second outer drum. Along the circumferential direction of the composite drum, the heat insulation plates and the sealing plates are arranged alternately. Each sealing plate is respectively provided with a hot air groove. The composite roller comprises a composite roller body and a composite fixing part, the composite fixing part is arranged on the side wall of the composite roller body, a first heating pipe is arranged in the composite fixing part, and a composite strip is arranged on the outer side of the composite fixing part, when the composite roller rotates to form a composite roller group with the anvil roller, the composite strip extends out from the hot air groove on the sealing plate; The heating chamber is fan-shaped as a whole, and includes a cavity, a heating net, a sealing felt and a second heating tube. The cavity is installed on a fixed shaft and located on the inner side of the composite drum. The heating net is arranged on the outer peripheral arc surface of the cavity. A sealing felt is also arranged on the outer periphery of the cavity. A second heating tube is arranged in the cavity, and a vent is also arranged on one side of the cavity.

2. The multi-layer material heating and compounding device for disposable sanitary products according to claim 1, characterized in that: In the composite roller, a first transmission gear is fixed on the inner wall of the first outer roller, and the first transmission gear rotates along with the rotation of the composite roller; a second transmission gear is arranged on the rotating shaft of the composite roller, and a transition gear is arranged between the first transmission gear and the second transmission gear.

3. The multi-layer material heating and compounding device for disposable sanitary products according to claim 1, characterized in that: The anvil roller includes a rubber-coated roller, an anvil roller shaft, a fixed seat, a driving motor, a rocker arm and a clamping cylinder. The anvil roller shaft is arranged at the center of the rubber-coated roller, the power output end of the driving motor is connected to one end of the anvil roller shaft, the anvil roller shaft is eccentrically installed in the fixed seat, one end of the rocker arm is arranged on the anvil roller shaft, and the other end of the rocker arm is connected to the clamping cylinder.

4. The multi-layer material heating and compounding device for disposable sanitary products according to claim 3, characterized in that: The multi-layer material heating and compounding device is also provided with a mounting bracket, and the fixing seats in the fixed shaft and the anvil roller are respectively arranged on the mounting bracket; the main body of the mounting bracket is a plate-like structure, and after installation, the rubber-coated roller in the compound roller and the anvil roller is located on one side of the mounting bracket.

5. The multi-layer material heating and compounding device for disposable sanitary products according to claim 4, characterized in that: The composite drum is also connected to a transmission box, which is located on the other side of the mounting bracket; after the transmission shaft of the transmission box passes through the mounting bracket, a third transmission gear is provided at the end of the transmission shaft, an internal gear is installed on one end surface of the composite drum, and the third transmission gear is meshedly connected with the internal gear.

6. The multi-layer material heating and compounding device for disposable sanitary products according to claim 4, characterized in that: The multi-layer material heating and compounding device is also provided with a material guide roller, which is arranged on the mounting bracket and parallel to one side of the rubber-coated roller.

7. A method for heating and compounding a multilayer material for a disposable sanitary product using the heating and compounding device according to any one of claims 1 to 6, characterized in that: The multiple layers of materials that make up the product are stacked and fed into the composite roller. As the composite roller rotates, they are transported forward. They are first preheated in the area corresponding to the heating chamber, and then continue to be transported forward. When they reach the anvil roller, they are heated and composited again through the cooperation of the anvil roller and the composite roller. After forming a composite material, they are sent out.

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