Novel composite absorption core forming device

Abstract

The utility model relates to the field of disposable hygienic product equipment, in particular to a novel composite absorption core forming device which comprises a first forming device, a second forming device and a winding device for a composite absorption core, a fluffy cotton input mechanism used for conveying fluffy cotton, a first non-woven fabric input mechanism used for conveying first non-woven fabric and a second non-woven fabric input mechanism used for conveying second non-woven fabric are arranged on one side of the first forming device. A separating mechanism used for separating the first non-woven fabric from the fluffy cotton is arranged between the first forming die wheel and the second forming die wheel, and the separating mechanism separates the first non-woven fabric and the primary composite fabric. The technical problems that in the prior art, when macromolecules are added to the composite non-woven fabric, working efficiency is low, and stability is poor are solved.

Description

Technical Field

[0001] The utility model relates to the field of disposable sanitary product equipment, in particular to a novel composite absorbent core forming device. Background Art

[0002] At present, the most common way to form the absorbent core is to use a forming device, which usually includes a forming mold wheel and a spreading device. Reference can be made to Chinese patent application number: CN202210900619.2, which discloses a device for manufacturing an absorbent core, including a frame, a controller, a first material conveying mechanism, a second material conveying mechanism, a first gluing mechanism, a second gluing mechanism, a first nip roller, a second nip roller, a polymer material composite mechanism, a second polymer material composite mechanism and a composite roller. The polymer material composite mechanism and the second polymer material composite mechanism both include a first transfer roller, a second transfer roller, a polymer storage cylinder and a third gluing mechanism. A negative pressure adsorption mechanism is provided in the first transfer roller, and the first transfer roller body is provided with a corresponding surface arranged according to the distribution amount of the polymer in each prefabricated absorbent core unit, and has a polymer adsorption groove with multiple grids continuously connected to accommodate different amounts of polymers.

[0003] There is an absorbent core with a composite non-woven fabric, which can refer to the Chinese patent application number: CN202310469078.7, which discloses an absorbent core with a composite non-woven fabric, including a body, the body including an upper fiber layer, a lower fiber layer and an intermediate fiber layer sandwiched between the upper fiber layer and the lower fiber layer, the upper fiber layer, the lower fiber layer and the intermediate fiber layer are bonded to each other to form a bonding portion, the area of ​​the bonding portion accounts for 5-100% of the area of ​​the body, the fiber thickness of the upper fiber layer and / or the lower fiber layer is 4-12D, the fiber thickness of the intermediate fiber layer is 0.6-2D, the upper fiber layer and the lower fiber layer are embedded with polymer water-absorbing particles, the average pores of the upper fiber layer and the lower fiber layer are greater than the average diameter of the polymer water-absorbing particles, and the average pores of the intermediate fiber layer are less than the average diameter of the polymer water-absorbing particles. It is necessary to realize the addition of polymers on its composite non-woven fabric, and how to efficiently and stably complete this process has become the research of the applicant. Utility Model Content

[0004] Therefore, in view of the above problems, the utility model proposes a novel composite absorbent core forming device, which solves the technical problems of low working efficiency and poor stability when adding polymers to composite non-woven fabrics in the existing process.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a novel composite absorbent core forming device, comprising a first forming device, a second forming device and a winding device for the composite absorbent core arranged according to an assembly line, wherein one side of the first forming device is provided with a fluffy cotton input mechanism for conveying fluffy cotton, a first non-woven fabric input mechanism for conveying a first non-woven fabric, and a second non-woven fabric input mechanism for conveying a second non-woven fabric;

[0006] The first molding device includes a first molding die wheel and a first spreading device for spreading polymers;

[0007] The second molding device includes a second molding die wheel and a second spreading device for spreading the second polymer;

[0008] The first non-woven fabric input mechanism is used to input the first non-woven fabric to the surface of the first molding die wheel, the fluffy cotton input mechanism is used to input the fluffy cotton to the first molding die wheel and cover the outer surface of the first non-woven fabric, the second non-woven fabric input mechanism is used to input the second non-woven fabric to the surface of the first molding die wheel and cover the outer surface of the fluffy cotton, the first spreading device is located above the first molding die wheel and between the fluffy cotton input end and the second non-woven fabric input end, and is used to spread the polymer on the outer surface of the fluffy cotton;

[0009] A separation mechanism for separating the first non-woven fabric from the fluffy cotton is provided between the first molding die wheel and the second molding die wheel, and the separation mechanism separates the first non-woven fabric and the primary composite fabric;

[0010] The second molding die wheel is used to receive the primary composite fabric output by the first molding die wheel, and the second non-woven fabric in the primary composite fabric is attached to the outer surface of the second molding die wheel, and the fluffy cotton is located on the outer surface of the second non-woven fabric;

[0011] The first non-woven fabric separated by the separation mechanism is input into the second forming die wheel after winding and covers the outer surface of the primary composite fabric. The second spreading device is located above the second forming die wheel and between the input end of the primary composite fabric and the input end of the separated first non-woven fabric.

[0012] Furthermore, the fluffy cotton input mechanism, the first non-woven fabric input mechanism, the second non-woven fabric input mechanism and the winding device all include one or more of an unwinding mechanism, a deviation correction mechanism, a buffer mechanism, a tensioning mechanism, a conveying mechanism and a guiding mechanism.

[0013] Furthermore, the first molding die wheel and the second molding die wheel are both negative pressure adsorption die wheels.

[0014] Furthermore, a first glue spraying device is provided between the second non-woven fabric input mechanism and the first molding die wheel, for spraying glue on the input second non-woven fabric.

[0015] Furthermore, a second glue spraying device is provided between the input end of the separation mechanism and the second molding die wheel, for spraying glue on the separated first non-woven fabric.

[0016] Furthermore, an adsorption wheel is arranged between the first molding die wheel and the second molding die wheel for removing dust generated by the first molding die wheel and the second molding die wheel.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are:

[0018] 1. This scheme uses the first molding device and the second molding device, and uses the first non-woven fabric input mechanism and the fluffy cotton input mechanism to input the first non-woven fabric and the fluffy cotton into the first molding device, and the first non-woven fabric is attached to the first molding die wheel, and the fluffy cotton is located on the outer surface of the first non-woven fabric, so that the polymer is spread on the outer surface of the fluffy cotton by the first spreading device, and then the second non-woven fabric input mechanism is used to input the second non-woven fabric, so as to cover the outer surface of the fluffy cotton, so as to cover the polymer spread for the first time. Then, when outputting, the first non-woven fabric is separated by the separation mechanism, and then the separated first composite fabric is input to the second molding die wheel, so that the second non-woven fabric is attached to the second molding die wheel and the fluffy cotton faces outward, and then the second spreading device is used for secondary spreading, and finally the separated first non-woven fabric is re-compounded on the fluffy cotton to form a composite non-woven fabric that has completed two polymer spreading. Then it is output to the winding device for winding.

[0019] By utilizing such a structure, when spreading the polymer, the first non-woven fabric and the second non-woven fabric can be used as the bottom layer for support to prevent the polymer material from being absorbed through the fluffy cotton. Moreover, by utilizing the relatively uniform and dense pores of the non-woven fabric, the adsorption force can be more effectively controlled to achieve a more stable addition of the polymer. Moreover, the structure is highly compact and occupies a small area. There is no need to slow down or reduce the speed in the process, so a more efficient spreading and addition of the polymer can be achieved.

[0020] 2. In order to realize the conveying of wide-width materials by the fluffy cotton input mechanism, the first non-woven fabric input mechanism, the second non-woven fabric input mechanism, and the winding device, one or more of the unwinding mechanism, the deviation correction mechanism, the buffer mechanism, the tensioning mechanism, the conveying mechanism, and the guiding mechanism can be set according to actual needs. These mechanisms are all conventional technologies in this technical field.

[0021] 3. The first glue spraying device and the second glue spraying device can be used to spray glue on the first non-woven fabric and the second non-woven fabric, thereby bonding the first non-woven fabric, the second non-woven fabric and the fluffy cotton. Of course, other methods can also be used to achieve connection, such as hot pressing, ultrasonic welding, etc.

[0022] 4. Since it involves the addition of polymers, wood pulp, cotton or other materials, it is easy to generate dust. The adsorption wheel can better remove the dust. The adsorption force is set between the first molding die wheel and the second molding die wheel, which can better achieve the removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a structural schematic diagram with an adsorption wheel added.

[0025] Reference numerals:

[0026] 11. First molding die wheel; 12. First spreading device; 13. First glue spraying device; 21. Second molding die wheel; 22. Second spreading device; 23. Second glue spraying device; 3. Winding device; 4. Fluffy cotton input mechanism; 5. First non-woven fabric input mechanism; 6. Second non-woven fabric input mechanism; 7. Separation mechanism; 8. Adsorption wheel; 91. First non-woven fabric; 92. Second non-woven fabric; 93. Fluffy cotton; 94. Primary composite fabric. DETAILED DESCRIPTION

[0027] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0028] refer to Figure 1 This embodiment provides a novel composite absorbent core forming device, comprising a first forming device, a second forming device and a winding device 3 for the composite absorbent core arranged according to an assembly line, wherein one side of the first forming device is provided with a fluffy cotton input mechanism 4 for conveying fluffy cotton 93, a first non-woven fabric input mechanism 5 for conveying the first non-woven fabric 91, and a second non-woven fabric input mechanism 6 for conveying the second non-woven fabric 92;

[0029] The first molding device includes a first molding die wheel 11 and a first spreading device 12 for spreading polymers;

[0030] The second molding device includes a second molding die wheel 21 and a second spreading device 22 for spreading the second polymer;

[0031] The first non-woven fabric input mechanism 5 is used to input the first non-woven fabric 91 to the surface of the first molding die wheel 11, the fluffy cotton input mechanism 4 is used to input the fluffy cotton 93 to the first molding die wheel 11 and cover the outer surface of the first non-woven fabric, the second non-woven fabric input mechanism 6 is used to input the second non-woven fabric 92 to the surface of the first molding die wheel 11 and cover the outer surface of the fluffy cotton 93, the first spreading device 12 is located above the first molding die wheel 11 and between the input end of the fluffy cotton 93 and the input end of the second non-woven fabric 92, and is used to spread the polymer on the outer surface of the fluffy cotton 93;

[0032] A separation mechanism 7 for separating the first non-woven fabric 91 from the fluffy cotton 93 is provided between the first molding die wheel 11 and the second molding die wheel 21, and the separation mechanism 7 separates the first non-woven fabric 91 and the primary composite fabric 94;

[0033] The second molding die wheel 21 is used to receive the primary composite cloth 94 output by the first molding die wheel 11, and the second non-woven cloth 92 in the primary composite cloth 94 is attached to the outer surface of the second molding die wheel 21, and the fluffy cotton 93 is located on the outer surface of the second non-woven cloth 92;

[0034] The first nonwoven fabric separated by the separation mechanism 7 is input to the second forming die wheel 21 after winding and covers the outer surface of the primary composite fabric 94. The second spreading device 22 is located above the second forming die wheel 21 and between the input end of the primary composite fabric 94 and the input end of the separated first nonwoven fabric. The separation mechanism 7 can be a structure for winding composed of multiple guide rollers.

[0035] A first glue spraying device 13 is provided between the second non-woven fabric input mechanism 6 and the first molding die wheel 11, for spraying glue on the input second non-woven fabric 92. A second glue spraying device 23 is provided between the input end of the separation mechanism 7 and the second molding die wheel 21, for spraying glue on the separated first non-woven fabric 91. Both the first glue spraying device 13 and the second glue spraying device 23 are conventional glue spraying devices in the art, which can be purchased from the market.

[0036] The fluffy cotton input mechanism 4, the first non-woven fabric input mechanism 5, the second non-woven fabric input mechanism 6 and the winding device 3 all include one or more of an unwinding mechanism, a deviation correction mechanism, a buffer mechanism, a tensioning mechanism, a conveying mechanism and a guiding mechanism. The unwinding mechanism, the deviation correction mechanism, the buffer mechanism, the tensioning mechanism, the conveying mechanism and the guiding mechanism are all conventional technical means in the art, and can be referred to in the relevant patents of the applicant, such as the unwinding mechanism, referring to an off-line unwinding device disclosed in Chinese Patent Application No. CN201510264615.X, such as the deviation correction structure, referring to a paper web deviation correction mechanism disclosed in Chinese Patent Application No. CN201621469755.7, such as the buffer mechanism and the tensioning mechanism, referring to a material tension control device disclosed in Chinese Patent Application No. CN201420387213.X, such as the conveying mechanism and the guiding mechanism, referring to a material unwinding control method disclosed in Chinese Patent Application No. CN202011605786.1, etc. The above mechanisms can be added or subtracted as needed, and other conventional devices can also be added. Similarly, the separation mechanism 7 may also be a combination of one or more of an unwinding mechanism, a deviation correcting mechanism, a buffering mechanism, a tensioning mechanism, a conveying mechanism, and a guiding mechanism.

[0037] The first molding die wheel 11 and the second molding die wheel 21 are both negative pressure adsorption die wheels.

[0038] The fluffy cotton 93 is also called fluffy non-woven fabric, which can also be made of other materials as long as it can support the spreading of double-sided polymers. The winding device 3 is a conventional technical means in this field, and the relevant patents of the applicant can also be referred to, such as a coreless winding device disclosed in Chinese patent application number CN202222975300.4.

[0039] Refer to Figure 2 , and Figure 1 The difference is that an adsorption wheel 8 is arranged between the first molding die wheel 11 and the second molding die wheel 21 to remove the dust generated by the first molding die wheel 11 and the second molding die wheel 21. In fact, the adsorption wheel 8 can also be replaced with other structural forms, such as an adsorption conveyor belt, etc., and can also be replaced with other functional components, such as an oscillation mechanism, etc.

[0040] Above Figure 1 , Figure 2 In the figure, the blue dotted line is the input line of the fluffy cotton 93, the purple double-dotted line is the input line of the first non-woven fabric 91, the red dotted line is the input line of the second non-woven fabric 92, and the black solid line is the output line after the first non-woven fabric, fluffy cotton and second non-woven fabric are combined.

[0041] In practical applications, a first oscillation mechanism and a second oscillation mechanism can also be set to oscillate the composite cloth and the complete composite body, so that the distribution of the polymer in the fluffy cotton can be more stable and uniform. When oscillating, there are two options. One is to achieve the aggregation of the polymer in the middle of the fluffy cotton. This method can achieve the stability of the position of the polymer in the fluffy cotton, prevent the polymer from agglomerating, and achieve a better uniformity of the water absorption effect. The other is to achieve a uniform distribution of the polymer on the surface of the fluffy cotton. In this way, the pores of the fluffy cotton are used to position the polymer particles, so that the arrangement of the polymer particles is more uniform, and when absorbing water, the upper and lower surfaces of the fluffy cotton can absorb water, and the middle of the fluffy cotton is used as a water passage, so that the purpose of rapid water absorption can be achieved. The first oscillation mechanism and the second oscillation mechanism are both conventional technical means in this field, which can be obtained through market purchases, and will not be described here, and there is no relevant mark in the figure.

[0042] The beneficial effects of the utility model are:

[0043] 1. This scheme uses the first molding device and the second molding device, and uses the first non-woven fabric input mechanism and the fluffy cotton input mechanism to input the first non-woven fabric and the fluffy cotton into the first molding device, and the first non-woven fabric is attached to the first molding die wheel, and the fluffy cotton is located on the outer surface of the first non-woven fabric, so that the polymer is spread on the outer surface of the fluffy cotton by the first spreading device, and then the second non-woven fabric input mechanism is used to input the second non-woven fabric, so as to cover the outer surface of the fluffy cotton, so as to cover the polymer spread for the first time. Then, when outputting, the first non-woven fabric is separated by the separation mechanism, and then the separated first composite fabric is input to the second molding die wheel, so that the second non-woven fabric is attached to the second molding die wheel and the fluffy cotton faces outward, and then the second spreading device is used for secondary spreading, and finally the separated first non-woven fabric is re-compounded on the fluffy cotton to form a composite non-woven fabric that has completed two polymer spreading. Then it is output to the winding device for winding.

[0044] By utilizing such a structure, when spreading the polymer, the first non-woven fabric and the second non-woven fabric can be used as the bottom layer for support to prevent the polymer material from being absorbed through the fluffy cotton. Moreover, by utilizing the relatively uniform and dense pores of the non-woven fabric, the adsorption force can be more effectively controlled to achieve a more stable addition of the polymer. Moreover, the structure is highly compact and occupies a small area. There is no need to slow down or reduce the speed in the process, so a more efficient spreading and addition of the polymer can be achieved.

[0045] 2. In order to realize the transportation of wide-width materials by fluffy cotton, the first non-woven fabric, the second non-woven fabric, and the winding device, one or more of the unwinding mechanism, the deviation correction mechanism, the buffer mechanism, the tensioning mechanism, the conveying mechanism, and the guiding mechanism can be set according to actual needs. These mechanisms are conventional technologies in this technical field.

[0046] 3. The first glue spraying device and the second glue spraying device can be used to spray glue on the first non-woven fabric and the second non-woven fabric, thereby bonding the first non-woven fabric, the second non-woven fabric and the fluffy cotton. Of course, other methods can also be used to achieve connection, such as hot pressing, ultrasonic welding, etc.

[0047] 4. Since it involves the addition of polymers, wood pulp, cotton or other materials, it is easy to generate dust. The adsorption wheel can better remove the dust. The adsorption force is set between the first molding die wheel and the second molding die wheel, which can better achieve the removal effect.

[0048] A composite absorbent core forming method based on the same inventive concept comprises the following steps:

[0049] In the first step, the first non-woven fabric input mechanism 5 is used to input the first non-woven fabric 91 into the first molding die wheel 11, and the fluffy cotton input mechanism 4 is used to input the fluffy cotton 93 into the first molding die wheel 11, and the fluffy cotton 93 is covered on the outer surface of the first non-woven fabric 91, and then the first spreading device 12 is used to spread the polymer on the outer surface of the fluffy cotton 93;

[0050] In the second step, the second non-woven fabric input mechanism 6 is used to input the second non-woven fabric 92 into the first molding die wheel 11, and the second non-woven fabric 92 is covered on the outer surface of the fluffy cotton 93 to cover the fluffy cotton 93 after the polymer is spread;

[0051] The third step is to output the preliminary composite of the first non-woven fabric 91, the fluffy cotton 93, and the second non-woven fabric 92, and separate the first non-woven fabric 91 from the preliminary composite by the separation mechanism 7 to form a primary composite fabric 94;

[0052] Step 4: The primary composite fabric 94 is input into the second molding die wheel 21, so that the second non-woven fabric 92 is attached to the outer surface of the second molding die wheel 21, and the fluffy cotton 93 is covered on the outer surface of the second non-woven fabric 92, and then the polymer is spread on the outer surface of the fluffy cotton 92 by the second spreading device 22;

[0053] Step 5: Cover the separated first non-woven fabric 91 on the outer surface of the fluffy cotton 93 on the second molding die wheel 21;

[0054] In the sixth step, the complete composite body of the first non-woven fabric 91 , the fluffy cotton 93 , and the second non-woven fabric 92 is output and rolled up by the rolling device 3 .

[0055] In the second step, the second glue spraying device 23 is used to spray glue on the second non-woven fabric 92 to achieve bonding with the fluffy cotton 93.

[0056] In the fifth step, the first glue spraying device 13 is used to spray glue on the first non-woven fabric 91 to achieve bonding with the fluffy cotton 93.

[0057] In the third step, the adsorption wheel 8 disposed between the first molding die wheel 11 and the second molding die wheel 21 is used to remove the dust generated by the first molding die wheel 11 and the second molding die wheel 21 .

[0058] In the third step, the primary composite cloth 94 is oscillated by using an oscillating mechanism disposed between the first molding die wheel 11 and the second molding die wheel 21 to achieve a reasonable distribution of the polymer on the fluffy cotton 93 .

[0059] In the sixth step, the complete composite is vibrated by using a second oscillating mechanism disposed outside the second molding die wheel 21 to achieve a reasonable distribution of the polymer on the fluffy cotton 93 .

[0060] The outer surface of the fluffy cotton in the first step and the outer surface of the fluffy cotton in the fourth step are actually two opposite surfaces. After the fluffy cotton passes through the first molding die wheel and the second molding die wheel, the surface is turned over, thereby achieving the spreading of polymer on different surfaces of the fluffy cotton. This process can achieve higher work efficiency.

[0061] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A novel composite absorbent core forming device, characterized in that: It comprises a first forming device, a second forming device and a winding device for a composite absorbent core arranged according to an assembly line, wherein one side of the first forming device is provided with a fluffy cotton input mechanism for conveying fluffy cotton, a first non-woven fabric input mechanism for conveying a first non-woven fabric, and a second non-woven fabric input mechanism for conveying a second non-woven fabric; The first molding device includes a first molding die wheel and a first spreading device for spreading polymers; The second molding device includes a second molding die wheel and a second spreading device for spreading the second polymer; The first non-woven fabric input mechanism is used to input the first non-woven fabric to the surface of the first molding die wheel, the fluffy cotton input mechanism is used to input the fluffy cotton to the first molding die wheel and cover the outer surface of the first non-woven fabric, the second non-woven fabric input mechanism is used to input the second non-woven fabric to the surface of the first molding die wheel and cover the outer surface of the fluffy cotton, the first spreading device is located above the first molding die wheel and between the fluffy cotton input end and the second non-woven fabric input end, and is used to spread the polymer on the outer surface of the fluffy cotton; A separation mechanism for separating the first non-woven fabric from the fluffy cotton is provided between the first molding die wheel and the second molding die wheel, and the separation mechanism separates the first non-woven fabric and the primary composite fabric; The second molding die wheel is used to receive the primary composite fabric output by the first molding die wheel, and the second non-woven fabric in the primary composite fabric is attached to the outer surface of the second molding die wheel, and the fluffy cotton is located on the outer surface of the second non-woven fabric; The first non-woven fabric separated by the separation mechanism is input into the second forming die wheel after winding and covers the outer surface of the primary composite fabric. The second spreading device is located above the second forming die wheel and between the input end of the primary composite fabric and the input end of the separated first non-woven fabric.

2. A novel composite absorbent core forming device according to claim 1, characterized in that: The fluffy cotton input mechanism, the first non-woven fabric input mechanism, the second non-woven fabric input mechanism and the winding device all include one or more of an unwinding mechanism, a deviation correction mechanism, a buffer mechanism, a tensioning mechanism, a conveying mechanism and a guiding mechanism.

3. A novel composite absorbent core forming device according to claim 1, characterized in that: The first molding die wheel and the second molding die wheel are both negative pressure adsorption die wheels.

4. A novel composite absorbent core forming device according to claim 1, characterized in that: A first glue spraying device is provided between the second non-woven fabric input mechanism and the first molding die wheel, and is used for spraying glue on the input second non-woven fabric.

5. A novel composite absorbent core forming device according to claim 1, characterized in that: A second glue spraying device is provided between the input end of the separation mechanism and the second molding die wheel, and is used for spraying glue on the separated first non-woven fabric.

6. A novel composite absorbent core forming device according to claim 1, characterized in that: An adsorption wheel is arranged between the first molding die wheel and the second molding die wheel, and is used to remove dust generated by the first molding die wheel and the second molding die wheel.

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