A method and device for forming an absorbent core

Abstract

The present invention discloses a molding method and equipment for an absorbent core, wherein a molding area and a demolding area are arranged on the outer peripheral surface of a molding drum, and each molding assembly installed on the molding drum rotates independently relative to the core shaft of the molding drum; after the molding assembly enters the molding area, adjacent molding assemblies are closely connected to mold the absorbent core; after the molding assembly exits the molding area, the molding assembly accelerates rotation, adjacent molding assemblies are separated, and demolding and transfer of the absorbent core are performed. The equipment comprises a molding drum and a plurality of molding assemblies installed on the molding drum, and each molding assembly rotates independently relative to the core shaft of the molding drum; a molding area and a demolding area are arranged on the outer peripheral surface of the molding drum, and the rotation speed of each molding assembly in the molding area is less than the rotation speed in the demolding area. The present invention can effectively improve the uniformity of the molding density and the content of polymer materials of the absorbent core, thereby improving the molding quality of the product.

Description

Technical Field

[0001] The invention relates to the technical field of disposable sanitary product manufacturing, and in particular to a molding method and equipment for an absorbent core. Background Art

[0002] As known disposable absorbent products, such as adult diapers, baby diapers, etc., they have been widely used in society. With the increasing aging of the population structure, the demand for adult diapers (adult incontinence) products will further increase. In such disposable sanitary products, the core structure is the absorbent core, that is, the molding quality of the absorbent core has the greatest impact on the performance of the product. For the absorbent core, the commonly used molding method is basically implemented in the following way:

[0003] Taking adult diapers as an example, in order to improve their absorption performance, such as Figure 1 or Figure 2 As shown, the absorbent core is generally composed of an upper and lower core layer. During the equipment production process, the lower core layer 1 is formed by continuous cavity molding, while the upper core layer 2 is formed by intermittent cavity molding. After the upper and lower core layers are formed separately, they are stacked together at the same pitch to form the absorbent core as a whole.

[0004] During the molding process of the absorbent core, the mold cavity 3 of the molding mold is continuous (eg Figure 3 As shown in the figure, the fibers and polymer materials are fed in a continuous conveying manner, and the circumferential surface of the forming area of ​​the forming drum is connected with negative pressure. The entire continuous area can be adsorbed at the same time, and the fibers and polymer materials can be aggregated and formed relatively evenly.

[0005] For the molding of the lower core body, the fibers and polymer materials are also fed in a continuous conveying manner, but the mold cavities 3 for molding in two adjacent molding molds on the molding drum are not continuous (e.g. Figure 4 As shown in the figure, during the molding process, as the drum rotates, the negative pressure adsorption area on the circumferential surface of the molding area is constantly changing. In this case, the fibers and polymer materials cannot be uniformly aggregated and molded, but will be excessively aggregated at the two ends of each mold cavity, which ultimately affects the molding effect. Figure 5 As shown in FIG. 1 , when the mold cavity of the tire mold is discontinuous, the mixture of fibers and polymer materials in the discontinuous area will gather toward the ends of the two adjacent mold cavities (such as Figure 5 As shown by the arrow in the figure, taking adult diapers as an example, during the molding process, the distance between the mold cavities in the adjacent molding molds of the upper core is not less than 200 mm, so a more serious end aggregation phenomenon will occur during molding, such as Figure 5As shown by the arrows in the figure, the fibers and polymer materials in the interval area will be pulled by the airflow of the two adjacent mold cavities and gathered along the nearest area (i.e., the end of the mold cavity), causing the molding density and polymer material content at the end of the mold cavity to be higher than other areas. The absorbent core after molding will affect the use effect of the product. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for forming an absorbent core. The method is suitable for forming an absorbent core of a non-continuously formed fetal membrane, which can effectively improve the uniformity of the absorbent core forming density and the polymer material content, thereby improving the molding quality of the product.

[0007] Another object of the present invention is to provide a forming device for an absorbent core applied to the above-mentioned forming method.

[0008] The technical solution of the present invention is: a method for forming an absorbent core, specifically: a forming area and a demolding area are set on the outer peripheral surface of the forming drum, and each forming component installed on the forming drum rotates independently relative to the core axis of the forming drum; after the forming component enters the forming area, the adjacent forming components are closely connected to form the absorbent core; after the forming component exits the forming area, the forming component accelerates rotation, the adjacent forming components are separated, and the absorbent core is demolded and transferred.

[0009] The absorbent core is a discontinuous absorbent core, which is used as a single-layer absorbent core or an upper core of a double-layer absorbent core. That is, the absorbent core formed by the above-mentioned forming method can be used as a single-layer absorbent core independently in subsequent product processing according to the actual needs of different types of disposable sanitary products, or can be used as an upper core of a double-layer absorbent core, which is combined with the lower core to form an absorbent core as a whole and then used in subsequent product processing.

[0010] In the molding area, the rotation speed of the molding components is equal to the rotation speed of the molding drum mandrel; in the demoulding area, the rotation speed of each molding component is greater than the rotation speed of the molding drum mandrel.

[0011] A transition zone is also provided on the outer circumferential surface of the forming drum. Along the rotation direction of the forming drum, the forming zone, the demoulding zone and the transition zone are arranged in sequence. In the transition zone, the rotation speed of the forming component gradually decreases to be consistent with the rotation speed of the forming component in the forming zone.

[0012] The present invention provides a forming device for an absorbent core, which can be used to implement the above-mentioned forming method, and includes a forming drum and a plurality of forming components, each forming component is distributed along the circumferential direction of the forming drum and installed on the forming drum, and each forming component rotates independently relative to the core shaft of the forming drum; a forming area and a demolding area are provided on the outer circumferential surface of the forming drum, and the rotation speed of each forming component in the forming area is lower than the rotation speed in the demolding area, each forming component located in the forming area is in a tightly connected state, and each forming component located in the demolding area is in a separated state. Among them, each forming component performs absorbent core forming in the forming area, and performs demolding and transfer of the absorbent core in the demolding area.

[0013] Furthermore, a transition area can be provided on the outer circumference of the forming drum. Along the rotation direction of the forming drum, the forming area, the demoulding area and the transition area are provided in sequence. In the transition area, the rotation speed of the forming assembly gradually decreases from the same rotation speed of the forming assembly in the demoulding area to the same rotation speed of the forming assembly in the forming area; at the same time, the distance between adjacent forming assemblies also gradually decreases. The provision of the transition area can avoid the phenomenon of collision between the components caused by the rapid change of the rotation speed of the forming assembly, and further improve the stability of the forming equipment.

[0014] In the molding drum, a down collecting bin is provided outside the molding area, and a fiber disintegrator for feeding fibers and a feeding mechanism for feeding polymer materials are connected to the down collecting bin, and the outlet of the down collecting bin covers the molding area. The fiber disintegrator is mainly used to feed fiber materials, and the feeding mechanism is mainly used to feed polymer materials. After the fiber materials and polymer materials are mixed in the down collecting bin, they gradually fall into the fetal membranes of each molding component in the molding area under the negative pressure in the molding area of ​​the molding drum, and are formed into an absorbent core.

[0015] In the molding drum, a transfer drum is arranged outside the demoulding area, and the outer peripheral surface of the transfer drum is connected with the outer peripheral surface of the molding drum to form a transfer channel for the absorbent core. When the molding assembly brings the molded absorbent core into the demoulding area, under the action of the transfer drum, the absorbent core gradually escapes from the fetal membrane of the molding assembly and is transferred by the transfer drum to the subsequent process; wherein, the principle of demoulding and transferring by the transfer drum is the same as the transfer mechanism commonly used in traditional absorbent core molding equipment.

[0016] The molding assembly includes a fetal membrane, an adsorption chamber and a supporting component. The fetal membrane covers the adsorption chamber. The supporting component is provided at the bottom of the adsorption chamber. A transition shaft seat is provided at the lower end of the supporting component. The transition shaft seat is coaxially arranged on the outer periphery of the core shaft of the molding drum. The transition shaft seat is externally connected to a driving motor, and the fetal membrane is embedded in the outer peripheral surface of the molding drum. In this structure, each molding assembly is individually connected to a driving motor, and each driving motor controls the rotation speed of the corresponding molding assembly through the corresponding transition shaft seat, ensuring that the rotation speed of each molding assembly can be independently controlled or adjusted, and does not interfere with the rotation speed of the molding drum.

[0017] Among the multiple molding components, the transition shaft seats in each molding component are installed layer by layer on the outer periphery of the molding drum core shaft, and the transition shaft seat and the core shaft or two adjacent transition shaft seats are connected through bearings. Each transition shaft seat is connected to a drive motor through a group of power transmission components.

[0018] The forming drum is provided with an air distribution device, and the adsorption chamber in the forming assembly entering the forming area is connected with the air distribution device to form a negative pressure.

[0019] When the above-mentioned absorbent core forming method and forming equipment are used, the principle is as follows: by utilizing the rotation speed change of each forming component on the forming drum relative to the core shaft of the forming drum, each forming component can form a continuous state of being close to each other, or a discontinuous state of being separated from each other; in the forming area of ​​the forming drum, each forming component is close to each other and closely connected, so that the distance between the fetal membranes of two adjacent forming components reaches a preset minimum value, and the forming effect of the absorbent core is close to the forming effect in the continuous state of the mold cavity; after forming, the forming component gradually enters the demoulding area, and before reaching the junction of the transfer drum and the forming drum, the adjacent forming components are gradually separated. When reaching the junction of the transfer drum and the forming drum, the distance between the adjacent forming components reaches a preset maximum value, and the absorbent core is demoulded and transferred under the action of the transfer drum. If the formed absorbent core is used as the upper core of a double-layer absorbent core, it is also combined with the lower core of the absorbent core to form the whole absorbent core. In this way, the phenomenon of fiber and polymer material gathering at the end of the mold cavity caused by uneven airflow during the forming process of the absorbent core is improved. The minimum and maximum values ​​of the distance between the fetal membranes of two adjacent molding components can be set or adjusted according to the actual needs of different disposable sanitary products and the specific distribution of the components of the molding components.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The absorbent core molding method and equipment are suitable for the absorbent core molding of non-continuously molded fetal membranes, that is, intermittent absorbent core molding, which can effectively improve the uniformity of the absorbent core molding density and the polymer material content, avoid the phenomenon of fiber and polymer material aggregation at the end of the absorbent core, and thus improve the molding quality of the product; at the same time, the molded absorbent core can be used as a single-layer absorbent core independently in subsequent product processing, and can also be used as the upper core of a double-layer absorbent core, and then combined with the lower core to form an absorbent core as a whole and then used in subsequent product processing, and has a wide range of applications.

[0022] In the forming equipment of the absorbent core, by dividing the surface of the forming drum into different functional areas, the speed change of each forming component in different areas on the forming drum relative to the core shaft of the forming drum is utilized, so that each forming component forms a continuous state of being close to each other when the absorbent core is formed, so that the forming effect is as close as possible to the forming effect in the continuous state of the mold cavity, thereby improving the uniformity of the forming of the absorbent core; when the absorbent is demolded, a discontinuous state of being separated from each other is formed, so as to achieve flexible demolding. For the production line of disposable sanitary products, the transformation cost of the forming equipment of the absorbent core is low, and the difficulty of equipment maintenance is also low, but it can better solve the problem of uneven density and polymer material content of the absorbent core in the prior art, effectively improve the quality of the product and the user experience, and enhance the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the absorbent core of adult diapers.

[0024] Figure 2 for Figure 1 A-direction cross-sectional view.

[0025] Figure 3 It is a schematic diagram of the principle of continuous absorption core molding in the prior art.

[0026] Figure 4 It is a schematic diagram of the principle of forming an intermittent absorbent core in the prior art.

[0027] Figure 5 for Figure 4 Schematic diagram of the principle of fibers and polymer materials gathering at both ends of the mold cavity.

[0028] Figure 6 Schematic diagram of the principle of the forming method of the absorbent core.

[0029] Figure 7 This is a schematic diagram of the structure of a single molding component in the molding equipment of the absorbent core.

[0030] In the above figures, the components indicated by the respective reference numerals are as follows: 1 is the lower core body, 2 is the upper core body, 3 is the mold cavity, 4 is the molding drum, 5 is the molding assembly, 5-1 is the fetal membrane, 5-2 is the adsorption chamber, 5-3 is the supporting component, 6 is the core shaft, F is the molding area, G is the demolding area, H is the transition area, 7 is the down collection bin, 8 is the defibrillator, 9 is the feeding mechanism, and 10 is the transfer drum. DETAILED DESCRIPTION

[0031] 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.

[0032] Example 1

[0033] This embodiment provides a forming device for an absorbent core, such as Figure 6 or Figure 7 As shown, it includes a forming drum 4 and a plurality of forming components 5, each forming component is distributed along the circumferential direction of the forming drum and installed on the forming drum, and each forming component rotates independently relative to the core shaft 6 of the forming drum; a forming area F and a demoulding area G are provided on the outer peripheral surface of the forming drum, and the rotation speed of each forming component in the forming area is less than the rotation speed in the demoulding area, each forming component located in the forming area is in a closely connected state, and each forming component located in the demoulding area is in a separated state. Among them, each forming component performs absorption core molding in the forming area, and performs demoulding and transfer of the absorption core in the demoulding area. In addition, in this embodiment, a transition area H is also provided on the outer peripheral surface of the forming drum, and the forming area, the demoulding area and the transition area are arranged in sequence along the rotation direction of the forming drum. In the transition area, the rotation speed of the forming component gradually decreases from the same rotation speed as the forming component in the demoulding area to the same rotation speed as the forming component in the forming area; at the same time, the distance between adjacent forming components also gradually decreases. The setting of the transition area can avoid the phenomenon of collision between components caused by the rapid change of the rotation speed of the forming component, and further improve the stability of the forming equipment.

[0034] In the forming drum, a down collecting bin 7 is provided on the outside of the forming area, and a fiber disintegrator 8 for feeding fibers and a feeding mechanism 9 for feeding polymer materials are also connected to the down collecting bin, and the outlet of the down collecting bin covers the forming area. Among them, the fiber disintegrator is mainly used to feed fiber materials, and the feeding mechanism is mainly used to feed polymer materials. After the fiber materials and polymer materials are mixed in the down collecting bin, they gradually fall into the fetal membranes of each forming component in the forming area under the negative pressure in the forming area of ​​the forming drum, and are formed into an absorbent core. A transfer drum 10 is provided on the outside of the demoulding area, and the outer peripheral surface of the transfer drum is connected to the outer peripheral surface of the forming drum to form a transfer channel for the absorbent core. When the forming component enters the demoulding area with the formed absorbent core, under the action of the transfer drum, the absorbent core gradually comes out of the fetal membrane of the forming component and is transferred by the transfer drum to the subsequent process; among them, the principle of demoulding and transferring by the transfer drum is the same as the transfer mechanism commonly used in traditional absorbent core forming equipment. When in use, the pulp board is defibrated by a defibrator, and the formed fibers enter the down collecting bin. The feeding mechanism selectively feeds polymer materials into the down collecting bin according to product requirements. After the fibers and polymer materials are mixed in the down collecting bin, under the action of the negative pressure in the molding area of ​​the molding drum, the mixed materials move in the down collecting bin toward the molding drum and gather and form on the surface of the molding drum along the mold cavity of the fetal membrane in the molding component to form the required absorbent core, and then transferred to the demolding area, demolded under the action of the transfer drum and transferred to the next production process.

[0035] like Figure 7As shown, the forming assembly includes a fetal membrane 5-1, an adsorption chamber 5-2 and a supporting component 5-3, the fetal membrane covers the adsorption chamber, a supporting component is provided at the bottom of the adsorption chamber, a transition shaft seat (not shown) is provided at the lower end of the supporting component, the transition shaft seat is coaxially arranged on the outer periphery of the core shaft of the forming drum, and the transition shaft seat is externally connected to a driving motor, and the fetal membrane is embedded in the outer peripheral surface of the forming drum. In this structure, each forming assembly is individually connected to a driving motor, and each driving motor controls the rotation speed of the corresponding forming assembly through the corresponding transition shaft seat, ensuring that the rotation speed of each forming assembly can be independently controlled or adjusted, and does not interfere with the rotation speed of the forming drum. Among the multiple forming assemblies, the transition shaft seat in each forming assembly is installed layer by layer on the outer periphery of the core shaft of the forming drum, and the transition shaft seat and the core shaft or two adjacent transition shaft seats are connected by bearings, and each transition shaft seat is externally connected to a driving motor through a set of power transmission components. In fact, the main structure of a single molding component in this structure (i.e., including the fetal membrane, adsorption and supporting parts) is the same as the traditional molding component. The difference is that in this molding equipment, each molding component is provided with an independent transition shaft seat and a driving motor, so that the molding component not only rotates with the molding drum, but also can rotate independently relative to the molding drum. Through the change of the rotation speed of each molding component, the adjacent molding components are formed into a closely connected state or a separated state. This power drive method is the same as similar power mechanisms in similar fields.

[0036] The forming drum is provided with a gas distribution device, and the adsorption chamber in the forming assembly entering the forming area is connected with the gas distribution device to form a negative pressure. The structure is the same as that of a conventional forming drum.

[0037] The above-mentioned molding equipment can realize a molding method of an absorbent core, which is specifically as follows: a molding area and a demoulding area are set on the outer peripheral surface of the molding drum, and each molding component installed on the molding drum rotates independently relative to the core shaft of the molding drum; after the molding component enters the molding area, the adjacent molding components are closely connected to mold the absorbent core; after the molding component exits the molding area, the molding component accelerates the rotation, the adjacent molding components are separated, and the demoulding and transfer of the absorbent core are performed. In the molding area, each molding component rotates synchronously with the core shaft of the molding drum; in the demoulding area, the rotation speed of each molding component is greater than the rotation speed of the core shaft of the molding drum. A transition area is also provided on the outer peripheral surface of the molding drum. Along the rotation direction of the molding drum, the molding area, the demoulding area and the transition area are sequentially arranged. In the transition area, the rotation speed of the molding component gradually decreases to be consistent with the rotation speed of the molding component in the molding area. Among them, the absorbent core is an intermittent absorbent core, which serves as the upper core of a single-layer absorbent core or a double-layer absorbent core. That is, the absorbent core formed by the above-mentioned molding method can be used as a single-layer absorbent core independently in subsequent product processing according to the actual needs of different types of disposable sanitary products, or can be used as the upper core of a double-layer absorbent core, which can be combined with the lower core to form an absorbent core as a whole and then used in subsequent product processing.

[0038] When the above-mentioned absorbent core forming method and forming equipment are used, the principle is as follows: by utilizing the rotation speed change of each forming component on the forming drum relative to the core shaft of the forming drum, each forming component can form a continuous state of being close to each other, or a discontinuous state of being separated from each other; in the forming area of ​​the forming drum, each forming component is close to each other and closely connected, so that the distance between the fetal membranes of two adjacent forming components reaches a preset minimum value, and the forming effect of the absorbent core is close to the forming effect in the continuous state of the mold cavity; after forming, the forming component gradually enters the demoulding area, and before reaching the junction of the transfer drum and the forming drum, the adjacent forming components are gradually separated. When reaching the junction of the transfer drum and the forming drum, the distance between the adjacent forming components reaches a preset maximum value, and the absorbent core is demoulded and transferred under the action of the transfer drum. If the formed absorbent core is used as the upper core of a double-layer absorbent core, it is also combined with the lower core of the absorbent core to form the whole absorbent core. In this way, the phenomenon of fiber and polymer material gathering at the end of the mold cavity caused by uneven airflow during the forming process of the absorbent core is improved. The minimum and maximum values ​​of the distance between the fetal membranes of two adjacent molding components can be set or adjusted according to the actual needs of different disposable sanitary products and the specific distribution of the components of the molding components.

[0039] Example 2

[0040] This embodiment provides a method for forming an absorbent core. The forming method and forming equipment described in Embodiment 1 are applied to the forming of adult diaper products, mainly used to form the upper core of the absorbent core. The specific process is as follows:

[0041] The main components of the upper core are a mixture of water-absorbing fibers and polymer materials. The two ends of the velvet collection bin are connected to the fiber disintegrator and the forming drum respectively, and the fibers are continuously transported to the forming drum. During the transportation process, the feeding mechanism will quantitatively supply polymer materials to the velvet collection bin as needed. After the fibers and polymer materials are mixed in the velvet collection bin, they are gathered in the tire mold on the surface of the forming drum under the traction of the airflow. This is the same as the existing technology.

[0042] However, in this embodiment, the flock collecting bin is connected to the forming drum only within the range of the forming area, and is not connected in other areas. The range of the forming area can be adjusted as needed. This embodiment is for illustration only, and no specific area restriction requirements are made. Among them, when the forming components installed on the forming drum pass through the forming area, the adjacent forming components are in a tightly closed state with each other. At this time, the mold cavities of the tire molds on the surfaces of the adjacent forming components in the forming area are also close to each other, showing a minimum gap state, and the mold cavities can be approximately considered to be continuous. The forming drum is provided with a corresponding air distribution device (not shown in the figure, the structure is the same as the existing forming drum). The forming components passing through the forming area are connected to the air distribution device and form a negative pressure on the surface of its mold cavity. The fibers and polymer materials are gathered and formed on the surface of the mold cavity in the forming area under the traction of the negative pressure. After the upper core is formed, a demolding area is provided on the other side of the forming drum away from the forming area. After the forming components are gathered and formed in the mold cavity on the surface of the forming component, they will continue to rotate along the core axis of the forming drum to the demolding area. At this time, the forming component will increase its rotation speed to increase the distance between it and the adjacent forming components and match the spacing size in the lower core. The transfer drum rotates at the same speed as the forming component, demolds the formed upper core along the tangential direction and composites it with the lower core to form a whole absorbent core and transfer it to the subsequent production process.

[0043] 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 method for forming an absorbent core, characterized in that: A forming area and a demoulding area are arranged on the outer circumference of the forming drum, and each forming assembly installed on the forming drum rotates independently relative to the core shaft of the forming drum; after the forming assembly enters the forming area, the adjacent forming assemblies are closely connected to form the absorbent core; after the forming assembly exits the forming area, the forming assembly accelerates the rotation, the adjacent forming assemblies are separated, and the demoulding and transfer of the absorbent core are carried out; The molding component includes a fetal membrane, an adsorption chamber and a supporting component. The fetal membrane covers the adsorption chamber. A supporting component is provided at the bottom of the adsorption chamber. A transition shaft seat is provided at the lower end of the supporting component. The transition shaft seat is coaxially arranged on the outer periphery of the molding drum core shaft, and the transition shaft seat is externally connected to a driving motor. The fetal membrane is embedded in the outer peripheral surface of the molding drum.

2. A method for forming an absorbent core according to claim 1, characterized in that: The absorbent core is a discontinuous absorbent core, serving as a single-layer absorbent core or an upper-layer core of a double-layer absorbent core.

3. A method for forming an absorbent core according to claim 1, characterized in that: In the molding area, the rotation speed of the molding assembly is equal to the rotation speed of the molding drum mandrel; in the demoulding area, the rotation speed of the molding assembly is greater than the rotation speed of the molding drum mandrel.

4. A method for forming an absorbent core according to claim 1, characterized in that: A transition zone is also provided on the outer circumferential surface of the forming drum. Along the rotation direction of the forming drum, the forming zone, the demoulding zone and the transition zone are arranged in sequence. In the transition zone, the rotation speed of the forming component gradually decreases to be consistent with the rotation speed of the forming component in the forming zone.

5. A forming device for an absorbent core, characterized in that: The invention comprises a forming drum and a plurality of forming components, wherein the forming components are distributed along the circumferential direction of the forming drum and are installed on the forming drum, and each forming component rotates independently relative to the core shaft of the forming drum; a forming area and a demoulding area are arranged on the outer circumferential surface of the forming drum, and the rotation speed of each forming component in the forming area is lower than that in the demoulding area, and each forming component in the forming area is in a tightly connected state, and each forming component in the demoulding area is in a separated state; The molding assembly includes a fetal membrane, an adsorption chamber and a supporting component. The fetal membrane covers the adsorption chamber. The bottom of the adsorption chamber is provided with a supporting component. The lower end of the supporting component is provided with a transition shaft seat. The transition shaft seat is coaxially arranged on the outer periphery of the core shaft of the molding drum. The transition shaft seat is externally connected to a driving motor. The fetal membrane is embedded in the outer peripheral surface of the molding drum. In the forming drum, a transfer drum is arranged outside the demoulding area, and the outer peripheral surface of the transfer drum is connected with the outer peripheral surface of the forming drum to form a transfer channel for the absorbent core.

6. The absorbent core forming device according to claim 5, characterized in that: In the forming drum, a down collecting bin is provided outside the forming area, a fiber disintegrator for feeding fibers and a feeding mechanism for feeding polymer materials are connected to the down collecting bin, and an outlet of the down collecting bin covers the forming area.

7. The absorbent core forming device according to claim 5, characterized in that: Among the multiple molding components, the transition shaft seats in each molding component are installed layer by layer on the outer periphery of the molding drum core shaft, and the transition shaft seat and the core shaft or two adjacent transition shaft seats are connected through bearings. Each transition shaft seat is connected to a drive motor through a group of power transmission components.

8. The absorbent core forming device according to claim 5, characterized in that: The forming drum is provided with an air distribution device, and the adsorption chamber in the forming assembly entering the forming area is connected with the air distribution device to form a negative pressure.

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