An absorbent article forming apparatus

Abstract

The application relates to an absorbent body forming device, which comprises a crushing unit with an input port and an output port, a polymer feeding unit comprising a feeding pipeline, the feeding pipeline having a vertical part extending in the longitudinal direction, one end of the vertical part being provided with a discharging port, a forming bin comprising a first forming bin, a second forming bin and a third forming bin which are independent of each other, the first forming bin comprising a first feeding port and a first discharging port, the second forming bin comprising a second feeding port and a second discharging port, and the third forming bin comprising a third feeding port and a third discharging port, and a fiber depositing unit for depositing fluff pulp fibers and a mixture of fluff pulp fibers and polymers to form an absorbent core, the output port of the crushing unit being communicated with the first feeding port, the second feeding port and the third feeding port, the discharging port of the feeding pipeline extending to the output port of the crushing unit, and the discharging port of the feeding pipeline being located above the second feeding port of the second forming bin. The application improves the uniformity of material mixing.

Description

Technical Field

[0001] This invention relates to the field of disposable hygiene product manufacturing equipment technology, particularly to the fields of sanitary napkins, incontinence napkins, diapers, pull-up pants, and sanitary pants, and specifically to an absorbent body forming device. Background Technology

[0002] The core performance of disposable hygiene products such as diapers, sanitary napkins, and incontinence pads depends on the absorbency rate, water-locking ability, and anti-backflow properties of the internal absorbent core. The absorbent core is usually made of fluff pulp fibers and superabsorbent polymer (hereinafter referred to as superabsorbent polymer or SAP).

[0003] like Figure 1 As shown, existing absorbent forming equipment generally includes a crushing unit 1, a fiber accumulation unit (not shown), and a forming chamber 2 connecting the crushing unit 1 and the fiber accumulation unit. The crushing unit 1 is generally located above the forming chamber 2 and is used to crush pulp sheets into fluff pulp fibers; the forming chamber 2 provides a mixing and conveying channel for fluff pulp fibers and polymers; the fiber accumulation unit is used for forming the absorbent and conveying the formed absorbent to downstream processes.

[0004] In existing manufacturing equipment structures, a polymer feeding channel 3 is also provided on the side wall of the molding chamber 2. The polymer feeding channel 3 has a discharge port, through which polymers are fed into the molding chamber 2, where they mix with fluff pulp fibers and are finally formed into an absorbent in the fiber accumulation unit. However, in this structure, the discharge port of the polymer feeding channel 3 is usually located on the side wall of the molding chamber 2, separated from the output port of the fluff pulp fibers formed after crushing by the crushing unit 1, and the distance between them is relatively large. This results in a short mixing stroke between the fluff pulp fibers and polymers, and insufficient effective mixing time. Consequently, the ratio of fluff pulp fibers to polymers in the absorbent is uneven, easily forming local weak absorption areas and local strong absorption areas, resulting in inconsistent water absorption rates in the product.

[0005] Meanwhile, traditional molding chamber 2 is generally an integrated single-cavity structure, which cannot achieve independent material feeding in different areas. During the fiber accumulation molding process, fluff pulp fibers and polymers are freely mixed inside molding chamber 2. The material source is the same in each area, and it is impossible to independently control the material supply to different target areas of the absorbent. Therefore, it is difficult to make differentiated basis weight and differentiated ratio designs for different areas of the absorbent. It cannot adapt to the gradient structure requirements of the absorbent surface which is dry and soft, the middle which is reinforced with water-locking and high absorption performance, and the bottom which focuses on fluffy and elasticity. The resulting absorbent has a simple structure, with small differences in material composition and basis weight in each area. It lacks ergonomic adaptability, and the molded absorbent is prone to liquid accumulation and unreasonable diffusion, which further affects the overall performance of the sanitary products, such as absorption and backflow prevention.

[0006] In addition, the size of the feed opening of the existing molding chamber 2 is mostly fixed, which makes it impossible to adjust the feed throughput of the molding chamber 2 in real time according to production specifications and material flow. The material feeding stability is poor and the adaptability is low. This further leads to uneven ratio of fluff pulp fiber and polymer in the absorbent, which easily forms local weak absorption areas and local strong absorption areas, resulting in inconsistent water absorption rate of the product. Summary of the Invention

[0007] This invention provides an absorbent forming device to solve the technical problems of short mixing stroke and insufficient mixing time of existing fluff pulp fibers and polymers, resulting in uneven ratio of fluff pulp fibers and polymers in the absorbent, as well as the poor forming effect of absorbents with simple structure and poor ergonomic fit.

[0008] The technical solution provided by this invention is as follows: One object of the present invention is to provide an absorbent forming apparatus having mutually orthogonal transverse, longitudinal, and CD directions, the absorbent forming apparatus comprising: A pulverizing unit has an input port and an output port arranged along the CD direction. The pulverizing unit is used to pulverize sheet-like fluff pulp into flocculent fluff pulp fibers. The axial direction of the pulverizing unit is consistent with the transverse direction, and the input port and the output port extend transversely. A polymer feeding unit is located on one side of the crushing unit along the CD direction; the polymer feeding unit includes a feeding pipe with a vertical section extending longitudinally, and one end of the vertical section has a discharge port; the polymer feeding unit is used to transport polymers. A forming chamber is located downstream of the crushing unit; the width of the forming chamber is consistent with the transverse direction, and includes a first forming chamber, a second forming chamber, and a third forming chamber that are independent of each other; in the transverse direction, the second forming chamber is located between the first forming chamber and the third forming chamber; The first forming chamber includes a first inlet and a first outlet, the second forming chamber includes a second inlet and a second outlet, and the third forming chamber includes a third inlet and a third outlet; The first forming chamber and the third forming chamber are used to transport fluff pulp fibers, and the second forming chamber is used to transport fluff pulp fibers after they are evenly mixed with polymers. A fiber deposition unit is located downstream of the first molding chamber, the second molding chamber, and the third molding chamber; the fiber deposition unit is used to deposit fluff pulp fibers and a mixture of fluff pulp fibers and polymers to form an absorbent core. The output port of the crushing unit is connected to the first feed port, the second feed port and the third feed port; the discharge port of the feeding pipe extends to the output port of the crushing unit and is located above the second feed port of the second forming chamber.

[0009] In a preferred embodiment, the molding chamber is rotatably mounted with the first and second adjusting members; The first adjusting component is used to adjust the size of the first feed inlet and the second feed inlet; The second adjusting member is used to adjust the size of the second feed port and the third feed port.

[0010] In a preferred embodiment, a first fixing member is provided between the first feed port and the second feed port, and a second fixing member is provided between the second feed port and the third feed port; The first adjusting member is installed above the first fixing member, and the second adjusting member is installed above the second fixing member.

[0011] In a preferred embodiment, the angle between the first adjusting member and the second adjusting member and the lateral direction is β, and the angle range of β is 30°≤β≤150°.

[0012] In a preferred embodiment, a first support post is installed above the first fastener, and a second support post is installed above the second fastener. The first adjusting member is rotatably mounted on the first support column, and the second adjusting member is rotatably mounted on the second support column; A first hole is provided on the upper part of the molding chamber along the rotation trajectory of the first adjusting member, and a second hole is provided on the upper part of the molding chamber along the rotation trajectory of the second adjusting member; When the first adjusting member is rotated to the predetermined position, the first adjusting member is fixed by the locking member passing through the first hole; When the second adjusting member is rotated to the predetermined position, the second adjusting member is fixed by the locking member passing through the second hole.

[0013] In a preferred embodiment, a first cover is rotatably mounted on the first support; a second cover is rotatably mounted on the second support. When the first cover rotates to cover the first hole, the first cover is fixed by a locking member passing through the first hole; When the second cover rotates to cover the second hole, the second cover is secured by a locking member passing through the second hole.

[0014] In a preferred embodiment, the feeding conduit is configured to be adjustable laterally or longitudinally, such that the discharge port of the feeding conduit moves laterally or longitudinally above the second inlet of the second forming chamber.

[0015] In a preferred embodiment, the feeding pipe is made of stainless steel, and the inner wall of the feeding pipe is treated with pickling passivation or electrolytic polishing.

[0016] In a preferred embodiment, the output port of the pulverizing unit has a first end and a second end on both sides along the longitudinal direction; Along the longitudinal direction, the vertical distance between the discharge port of the feeding pipe and the first end does not exceed one-half of the vertical distance between the first end and the second end.

[0017] In a preferred embodiment, there is a predetermined first gap between the first discharge port and the second discharge port, the size of which ranges from 20mm to 60mm; and there is a predetermined second gap between the second discharge port and the third discharge port, the size of which ranges from 20mm to 60mm.

[0018] In a preferred embodiment, a first sealing element is provided between the first discharge port and the second discharge port; a second sealing element is provided between the second discharge port and the third discharge port. The first seal is disposed in the first interval, and the second seal is disposed in the second interval.

[0019] In a preferred embodiment, the fiber-bonding unit includes: Accumulated fiber drum; A molding unit located on the outer periphery of the fiber accumulation drum; And a partitioning mechanism located inside the fiber drum; The fiber accumulation drum has a cylindrical structure, and the molding unit is connected to the fiber accumulation drum; the partitioning mechanism includes a first negative pressure zone and a demolding zone; The fiber drum is configured to rotate the molding unit around its own rotation center at a predetermined speed along a first rotation direction, so that the molding unit circulates between the first negative pressure zone and the demolding zone. A negative pressure is formed inside the first negative pressure zone to adsorb the fluff pulp fibers and the mixture of fluff pulp fibers and polymers into the molding unit to form an absorbent core. The demolding area is equipped with a first air blowing device for blowing air onto the bottom of the molding unit to demold the molded absorbent core.

[0020] In a preferred embodiment, the outer side of the molding unit in the circumferential direction is provided with a plurality of recesses for depositing fluff pulp fibers and a mixture of fluff pulp fibers and polymers to form an absorbent core.

[0021] In a preferred embodiment, the first negative pressure zone is divided into a first adsorption zone, a second adsorption zone, and a third adsorption zone; The first adsorption zone is set to correspond to the first discharge port, the second adsorption zone is set to correspond to the second discharge port, and the third adsorption zone is set to correspond to the third discharge port. The negative pressure value of the second adsorption zone is greater than the negative pressure value of the first adsorption zone, and the negative pressure value of the first adsorption zone is greater than the negative pressure value of the third adsorption zone.

[0022] In a preferred embodiment, the absorbent forming apparatus further includes: The first conveying unit is located on the outer periphery of the fiber accumulation unit and is used to receive the absorbent core after demolding and transfer the absorbent core to the second conveying unit. The second conveying unit is located downstream of the first conveying unit and is used to composite the absorbent core onto the coating layer and convey it downstream.

[0023] In a preferred embodiment, a flow control component is provided at least below the second feed inlet of the second forming chamber; The flow control assembly includes a first flow control element and a second flow control element arranged at intervals along the CD direction. The first flow control element and the second flow control element penetrate from the outside of the second molding chamber and extend into the inside of the second molding chamber.

[0024] In a preferred embodiment, the first flow control element located inside the second forming chamber has a first inclined portion, and the second flow control element has a second inclined portion; The tilt angles of the first and second inclined portions are adjustable to adjust the feed rate of the mixture of fluff pulp fibers and polymers.

[0025] In a preferred embodiment, the first forming chamber, the second forming chamber, and the third forming chamber are arranged sequentially along the axial direction of the crushing unit.

[0026] In a preferred embodiment, the polymer feeding unit is equipped with a jetting assembly for providing jetting power to the polymer so as to jet the polymer outward through the discharge port.

[0027] The above-described technical solution of the present invention has at least the following beneficial effects compared with the prior art: This invention provides an absorbent forming device. The output port of the crushing unit is connected to a first feed port, a second feed port, and a third feed port. The discharge port of the feeding pipe extends to the output port of the crushing unit and is located above the second feed port of the second forming chamber. The polymer and fluff pulp fiber begin to contact and mix synchronously at the second feed port of the second forming chamber, greatly extending the effective mixing time of the two materials and improving the uniformity of material mixing.

[0028] This invention provides an absorbent forming device. The crushing blade of the crushing unit rotates at high speed to cut the fluff pulp sheet. The resulting flocculent fluff pulp fibers generate a high-speed airflow when discharged through the output port. The feed pipe extends to the output port of the crushing unit. The high-speed airflow impacts and disperses the polymer, thereby mixing it with the fluff pulp fibers. This prevents the polymer from agglomerating and clumping due to its own electrostatic effect during feeding, improves the mixing uniformity of the fluff pulp fibers and polymers, solves the defects of local fluff pulp fiber agglomeration and local polymer accumulation, and ensures a uniform and stable ratio of the two materials.

[0029] The present invention provides an absorbent forming apparatus in which the feeding pipe is configured to be adjustable in the transverse or longitudinal direction, so that the discharge port of the feeding pipe moves in the transverse or longitudinal direction above the second inlet of the second forming chamber, thereby improving the mixing uniformity of fluff pulp fibers and polymers, so that the polymers and fluff pulp fibers can be evenly distributed and achieve the optimal ratio.

[0030] This invention provides an absorbent forming device. The size of the first and second feed inlets is adjusted by a first adjusting component, and the size of the second and third feed inlets is adjusted by a second adjusting component. The amount of the mixture of fluff pulp fiber and polymer in the second forming chamber is adjusted by a flow control component, thereby improving feeding stability, improving the mixing uniformity of fluff pulp fiber and polymer, and ensuring that the polymer and fluff pulp fiber are evenly distributed and achieve the optimal ratio. At the same time, the thickness of each layer of the absorbent structure can be flexibly adjusted.

[0031] This invention provides an absorbent forming device, employing three independent forming chambers: a first forming chamber, a second forming chamber, and a third forming chamber. The first and third forming chambers are used to transport fluff pulp fibers, while the second forming chamber is used to transport fluff pulp fibers mixed uniformly with polymers. The fluff pulp fibers in the first, second, and third forming chambers do not fly into each other, and the polymers in the second forming chamber do not fly into the first and third forming chambers. The three forming chambers have good barrier properties, resulting in an absorbent core with a "sandwich" structure. The interfaces between the layers of the "sandwich" structure are relatively clear, enabling the prepared absorbent to have a gradient structure that meets the requirements of a dry and soft surface, a strong water-locking and high-absorption middle layer, and a fluffy and resilient bottom layer, thus achieving an ergonomic absorbent forming effect.

[0032] In addition to the above-mentioned effective effects, other beneficial effects that can be achieved by the technical solution of the absorbent forming device of the present invention will be described in detail in the following specific embodiments. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a partial structural diagram of an existing absorber manufacturing device.

[0035] Figure 2 This is a schematic diagram of the structure of an absorber manufactured in one embodiment of the present invention.

[0036] Figure 3 yes Figure 2 Cross-sectional view of the middle TT.

[0037] Figure 4 This is a cross-sectional view of the absorbent core of an absorber manufactured in one embodiment of the present invention.

[0038] Figure 5 This is a front view of an absorbent forming device according to the present invention.

[0039] Figure 6 This is a schematic diagram of part of the structure of the polymer feeding unit, crushing unit and molding chamber of the present invention.

[0040] Figure 7 yes Figure 6 A magnified view of the U-region.

[0041] Figure 8 This is a side view of an absorbent forming device according to the present invention.

[0042] Figure 9 This is a schematic diagram of the feed inlet of the feeding pipe and the output port of the crushing unit of the present invention.

[0043] Figure 10 yes Figure 8 A magnified view of region E in the middle. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” or “including,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or “connected,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0046] It should be noted that the terms "up", "down", "left", "right", "front", and "back" used in this invention are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] Combination Figures 2 to 4 An absorbent WO is mainly used to absorb bodily fluids and excretions, such as menstrual blood and urine.

[0048] like Figure 2 and Figure 3 As shown, the absorbent body W0 includes a covering layer W10 and an absorbent core W. The covering layer W10 is used to wrap the absorbent core W to prevent the absorbent material from leaking from both sides. Its folding shape can be G-fold, C-fold, etc. In this embodiment, a G-fold structure is adopted. The covering layer W10 can be made of materials such as toilet paper, dust-free paper, and non-woven fabric.

[0049] like Figure 4As shown, the absorbent core W includes three absorbent layers from top to bottom along the thickness direction: a first absorbent layer W1, a second absorbent layer W2, and a third absorbent layer W3. The first absorbent layer W1 and the third absorbent layer W3 each contain only fluff pulp fibers S. The second absorbent layer W2 contains a mixture of fluff pulp fibers S and polymer P (i.e., superabsorbent polymer, SAP, or simply polymer). In other words, the absorbent core W in this embodiment is a mixture of fluff pulp fibers S and polymer P sandwiched between two layers of fluff pulp fiber S, which can be called the "sandwich" structure of the absorbent core W.

[0050] In other embodiments, if the absorbent core W has only one absorbent layer, then the absorbent layer comprises a mixture of fluff pulp fibers S and polymer P. If the absorbent core W comprises two absorbent layers (a first absorbent layer W1 and a second absorbent layer W2, or a second absorbent layer W2 and a third absorbent layer W3), then at least one absorbent layer comprises a mixture of fluff pulp fibers S and polymer P.

[0051] like Figure 5 As shown, in order to prepare the above-mentioned absorbent WO, an absorbent forming apparatus 100 is provided according to an embodiment of the present invention. The absorbent forming apparatus 100 is provided in a disposable hygiene product manufacturing equipment.

[0052] Combination Figures 5 to 10 According to an embodiment of the present invention, an absorbent forming device 100 includes a polymer feeding unit 10, a crushing unit 20, a forming chamber 30, a fiber accumulation unit 40, a first conveying unit 50, and a second conveying unit 60.

[0053] The absorber forming device 100 has an MD direction and a CD direction. The MD direction refers to the main flow direction during normal operation of the equipment, that is, the direction in which the absorber W0 on the production line flows from upstream to downstream, while the CD direction is perpendicular to the flow direction. The absorber forming device 100 has mutually orthogonal transverse, longitudinal, and CD directions, and the CD direction is also perpendicular to the transverse and longitudinal directions.

[0054] like Figure 5 and Figure 8 As shown, the polymer feeding unit 10 is located on one side of the crushing unit 20 along the CD direction. The polymer feeding unit 10 includes a feeding pipe 11, which has a vertical portion 11a that extends longitudinally. One end of the vertical portion 11a has a discharge port 12. The polymer feeding unit 10 is used to transport polymer P.

[0055] Specifically, the feeding pipe 11 transports a certain amount of polymer P, and the polymer P enters the molding chamber 30 through the discharge port 12.

[0056] Furthermore, the long side of the discharge port 12 of the feeding pipe 11 extends laterally, and the cross-section of the discharge port 12 of the feeding pipe 11 is a flat rectangular structure.

[0057] The discharge port 12 of the feeding pipe 11 has a flat rectangular cross-section, which makes the polymer P form a flat ribbon-shaped material flow after being sprayed out. The discharge flow rate is evenly distributed along the CD direction, the material flow is stable, and the dispersion effect of polymer P is better.

[0058] During long-term transportation of polymer P, it may occasionally become damp, creating a humid environment that can cause corrosion to the feeding pipe 11. To extend the service life of the feeding pipe 11, it is made of stainless steel, and the inner wall of the feeding pipe 11 is treated with pickling passivation or electrolytic polishing to improve its corrosion resistance and reduce dust adhesion.

[0059] The polymer feeding unit 10 is equipped with a spraying assembly 13, which provides spraying power to polymer P so as to spray polymer P outward through the discharge port 12.

[0060] Generally, the spraying component 13 is a spray gun. The spraying component 13 imparts a certain initial velocity to the polymer P, which is beneficial for the dispersion of the polymer P and prevents material accumulation and clogging. The polymer P is driven by the spraying power, resulting in smooth feeding and reducing the adhesion and clumping of polymer P at the discharge port 12 of the polymer feeding unit 10.

[0061] Combination Figure 5 and Figure 8 The pulverizing unit 20 has an input port 21 and an output port 22 arranged along the CD direction. The pulverizing unit 20 is used to pulverize sheet-like fluff pulp into flocculent fluff pulp fibers S. The axial direction of the pulverizing unit 20 is consistent with the transverse direction, and the input port 21 and the output port 22 extend transversely.

[0062] The crushing unit 20 includes a crushing blade 23 and a housing 24. The crushing unit 20 is used to crush sheet-like fluff pulp into flocculent fluff pulp fibers S. The feeding pipe 11 of the polymer feeding unit 10 is fixedly mounted on the housing 24 of the crushing unit 20 by a mounting bracket 10a.

[0063] Combination Figure 5 and Figure 8 The housing 24 contains an assembly that rotates at a predetermined speed around its own center of rotation. Figure 8 The shaft assembly rotates in the direction indicated by the arrow r1. The crushing blade 23 is mounted on the outer periphery of the shaft assembly, and the cover 24 is located on the outside of the crushing blade 23 to isolate and protect it.

[0064] The fluff pulp sheet S0 is conveyed to the crushing unit 20 through the inlet 21. The shaft assembly drives the crushing blade 23 to rotate at high speed, crushing the sheet-like fluff pulp sheet S0 into flocculent fluff pulp fibers S, which are then discharged through the outlet 22.

[0065] like Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the forming chamber 30 is located downstream of the crushing unit 20. The width direction of the forming chamber 30 is consistent with the transverse direction, the length direction of the forming chamber 30 is consistent with the longitudinal direction, and the thickness direction of the forming chamber 30 is consistent with the CD direction.

[0066] The molding chamber 30 includes a first molding chamber 31, a second molding chamber 32, and a third molding chamber 33, which are independent of each other.

[0067] The first forming chamber 31, the second forming chamber 32, and the third forming chamber 33 (i.e., forming chamber 30) are located downstream of the crushing unit 20. Laterally, the second forming chamber 32 is located between the first forming chamber 31 and the third forming chamber 33.

[0068] The first forming chamber 31, the second forming chamber 32, and the third forming chamber 33 are arranged sequentially along the axial direction of the crushing unit 20. In this invention, the axial direction of the crushing unit 20 is aligned with the transverse direction. The first forming chamber 31, the second forming chamber 32, and the third forming chamber 33 are arranged sequentially along the axial direction of the crushing unit 20, and the width direction of the forming chamber 30 is aligned with the transverse direction. This structure provides a larger forming chamber space, resulting in a higher flow rate and volume of negative pressure within the forming chamber 30 (compared to the existing crushing unit where the circumferential direction is at 90° to the width direction of the forming chamber). This makes it easier to adjust the uniformity of the absorbent core W (in this embodiment, a "sandwich" structure consisting of two layers of fluff pulp fiber S sandwiched between a mixture of fluff pulp fiber S and polymer P) in the CD direction.

[0069] like Figure 5 As shown, the first forming chamber 31 includes a first inlet 311 and a first outlet 312. The second forming chamber 32 includes a second inlet 321 and a second outlet 322. The third forming chamber 33 includes a third inlet 331 and a third outlet 332.

[0070] The first forming chamber 31 and the third forming chamber 33 are used to transport fluff pulp fibers, and the second forming chamber 32 is used to transport fluff pulp fibers after they are mixed evenly with polymer P.

[0071] According to an embodiment of the invention, the output port 22 of the crushing unit 20 is connected to the first feed port 311 of the first forming chamber 31, the second feed port 321 of the second forming chamber 32, and the third feed port 331 of the third forming chamber 33. The discharge port 12 of the feeding pipe 11 of the polymer feeding unit 10 extends to the output port 22 of the crushing unit 20, and the discharge port 12 of the feeding pipe 11 is located above the second feed port 321 of the second forming chamber 32.

[0072] The fluff pulp fibers S, after being crushed by the crushing unit 20, are discharged through the output port 22 and then enter the first forming chamber 31 through the first feed port 311, the second forming chamber 32 through the second feed port 321, and the third forming chamber 33 through the third feed port 331 for forming.

[0073] The discharge port 12 of the feeding pipe 11 of the polymer feeding unit 10 of the present invention is located above the second inlet 321 of the second molding chamber 32 to convey polymer P into the second molding chamber 32.

[0074] The first forming chamber 31, the second forming chamber 32, and the third forming chamber 33 have negative pressure airflow due to their connection to the fiber accumulation unit 40 (described in detail below). Fluff pulp fibers S and polymer P enter the second forming chamber 32 through the second inlet 321 and mix together there. The mixture then enters the fiber accumulation unit 40 through the second outlet 322 and is formed there (the forming process is described in detail below). Fluff pulp fibers S enter the first forming chamber 31 and the third forming chamber 33 through the first inlet 311 and the third inlet 331 respectively, mix, and then enter the fiber accumulation unit 40 through the first outlet 312 and the third outlet 332 respectively, where they are formed (the forming process is described in detail below).

[0075] In this invention, the discharge port 12 of the feeding pipe 11 of the polymer feeding unit 10 extends vertically through the vertical portion 11a to the output port 22 of the crushing unit 20, and the discharge port 12 of the feeding pipe 11 is located above the second inlet 321 of the second forming chamber 32. The polymer P and the fluff pulp fiber S begin to contact and mix synchronously at the second inlet 321 of the second forming chamber 32, greatly extending the effective mixing time of the two materials and improving the uniformity of material mixing.

[0076] In this invention, the crushing blade 23 of the crushing unit 20 rotates at high speed to de-fiber the fluff pulp sheet. The flocculent fluff pulp fibers S formed after defibering are discharged through the output port 22, generating a high-speed airflow. The feed port 12 of the feeding pipe 11 extends to the output port 22 of the crushing unit 20. The high-speed airflow impacts and disperses the polymer P, thereby mixing it with the fluff pulp fibers S. This avoids the polymer P from agglomerating and clumping due to its own electrostatic effect during feeding. It solves the defects of local fluff pulp fiber S agglomeration and local polymer P accumulation when polymer P and fluff pulp fibers S are formed in the fiber accumulation unit 40, ensuring a uniform and stable ratio of the two materials.

[0077] like Figure 5 and Figure 6 As shown, according to an embodiment of the present invention, the feeding pipe 11 is configured to be adjustable in the lateral or longitudinal direction, so that the discharge port 12 of the feeding pipe 11 can move in the lateral or longitudinal direction above the second inlet 321 of the second forming chamber 32.

[0078] In this invention, the feeding pipe 11 is configured to be adjustable in either the transverse or longitudinal direction, allowing the discharge port 12 of the feeding pipe 11 to be moved above the first inlet 311 of the first molding chamber 31 to deliver polymer P into the first molding chamber 31, or to be moved above the third inlet 331 of the third molding chamber 33 to deliver polymer P into the third molding chamber 33. This invention adjusts the position of the discharge port 12 by adjusting the feeding pipe 11 laterally, thereby preparing absorbers W with different structures and absorption effects.

[0079] In this invention, the feeding pipe 11 of the polymer feeding unit 10 is configured to be adjustable in the horizontal or vertical direction, so that polymer P can be selectively supplied to different molding chambers. This eliminates the need to configure an independent polymer feeding pipe for each molding chamber 30, greatly simplifying the equipment structure and reducing the overall manufacturing and maintenance costs.

[0080] In this invention, the feeding pipe 11 is configured to be adjustable in the horizontal or vertical direction, so that the discharge port 12 of the feeding pipe 11 can move horizontally or vertically above the second inlet 321 of the second molding chamber 32, thereby improving the mixing uniformity of fluff pulp fiber S and polymer P, so that polymer P and fluff pulp fiber S can be evenly distributed, improving the mixing uniformity of materials and achieving the optimal ratio.

[0081] This invention employs three independent molding chambers: a first molding chamber 31, a second molding chamber 32, and a third molding chamber 33. The fluff pulp fibers S in the first molding chamber 31, the second molding chamber 32, and the third molding chamber 33 will not migrate to each other, and the polymer P in the second molding chamber 32 will not migrate to the first molding chamber 31 and the third molding chamber 33. Compared with the prior art where the molding chamber uses a partition method to form a layered absorbent, the three molding chambers 30 in this application have better barrier properties. The resulting absorbent core W has a "sandwich" structure, and the interfaces between the layers of the "sandwich" structure are relatively obvious. This results in an absorbent with a gradient structure that is dry and soft on the surface, strong water retention and high absorption in the middle, and fluffy and resilient at the bottom, achieving an ergonomic absorbent molding effect.

[0082] Combination Figure 8 and Figure 9 According to an embodiment of the present invention, the output port 22 of the crushing unit 20 has a first end 22a and a second end 22b on both sides along the longitudinal direction. Along the longitudinal direction, the vertical distance L2 between the discharge port 12 of the feeding pipe 11 and the first end 22a does not exceed half of the vertical distance L1 between the first end 22a and the second end 22b.

[0083] That is, along the longitudinal direction, the vertical distance between the first end 22a and the second end 22b is L1, and the vertical distance between the discharge port 12 of the feeding pipe 11 and the first end 22a is L2. Then L2≤(1 / 2)×L1.

[0084] In this invention, the vertical distance L2 between the discharge port 12 of the feeding pipe 11 and the first end 22a along the longitudinal direction does not exceed half of the vertical distance L1 between the first end 22a and the second end 22b. On the one hand, this allows the polymer P and the fluff pulp fiber S to begin synchronous contact and mixing at the second inlet 321 of the second molding chamber 32. On the other hand, it avoids interference from the feeding pipe 11 when the fluff pulp fiber is discharged through the outlet 22, and avoids insufficient fluff pulp fiber S, thereby ensuring the uniformity of mixing of the two materials, fluff pulp fiber S and polymer P.

[0085] like Figure 5 and Figure 6 As shown, the molding chamber 30 is rotatably equipped with the first adjusting member 36 and the second adjusting member 37.

[0086] The first adjusting member 36 is used to adjust the size of the first feed inlet 311 and the second feed inlet 321. The second adjusting member 37 is used to adjust the size of the second feed inlet 321 and the third feed inlet 331.

[0087] Specifically, a first fixing member 34 is provided between the first feed inlet 311 and the second feed inlet 321 in the transverse direction, and a second fixing member 35 is provided between the second feed inlet 321 and the third feed inlet 331 in the transverse direction. In the longitudinal direction, the first fixing member 34 and the second fixing member 35 are located at the upper part of the forming chamber 30.

[0088] The first adjusting member 36 is installed above the first fixing member 34 (above the end near the first feed port 311 and the second feed port 321).

[0089] The second adjusting member 37 is installed above the second fixing member 35 (above one end near the second feed port 321 and the third feed port 331).

[0090] Combination Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 A first support column 30a is installed above the first fixing member 34 (above one end near the first feed port 311 and the second feed port 321), and a second support column 30b is installed above the second fixing member 35 (above one end near the second feed port 321 and the third feed port 331).

[0091] The first support column 30a and the second support column 30b are arranged along the CD direction, and the two ends of the first support column 30a and the second support column 30b along the CD direction are fixed to the molding chamber 30.

[0092] The first adjusting member 36 is rotatably mounted on the first support column 30a, and the second adjusting member 37 is rotatably mounted on the second support column 30b.

[0093] A first hole 30c is provided on the molding chamber 30 along the rotation trajectory of the first adjusting member 36, and a second hole 30d is provided on the molding chamber 30 along the rotation trajectory of the second adjusting member 37. The first hole 30c and the second hole 30d are located on the same side of the molding chamber 30 along the CD direction.

[0094] When the first adjusting member 36 is rotated to the predetermined position, the first adjusting member 36 is fixed by a locking member (e.g., a bolt) passing through the first hole 30c.

[0095] When the second adjusting member 37 is rotated to the predetermined position, the second adjusting member 37 is fixed by a locking member (e.g., a bolt) passing through the second hole 30d.

[0096] In this embodiment, the first hole 30c and the second hole 30d are oblong holes. In other embodiments, the first hole 30c and the second hole 30d may also be holes of other shapes.

[0097] like Figure 5 , Figure 6 and Figure 7 As shown, the angle between the first adjusting member 36 and the second adjusting member 37 and the lateral direction is β, and the angle range of β is 30°≤β≤150°.

[0098] This invention allows for flexible adjustment of the size of the inlets of the first feed port 311, the second feed port 321, and the third feed port 331 by rotating the first adjusting member 36 and the second adjusting member 37. This enables precise control of the feed amount of fluff pulp fiber S entering the first forming chamber 31 and the third forming chamber 33, as well as the feed amount of the mixture of fluff pulp fiber S and polymer P entering the second forming chamber 32. This allows for flexible adjustment of the basis weight of each absorber layer and the ratio of fluff pulp fiber S to polymer P, thus meeting the fine-ratio design requirements of absorbers with different layered structures.

[0099] Combination Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10 The first cover 30e is rotatably mounted on the first support 30a, and the second cover 30f is rotatably mounted on the second support 30b.

[0100] When the first cover 30e rotates to cover the first hole 30c, the first cover 30e is secured by a locking element (e.g., a bolt) passing through the first hole 30c.

[0101] When the second cover 30f rotates to cover the second hole 30d, the second cover 30f is secured by a locking element (e.g., a bolt) passing through the second hole 30d.

[0102] In this invention, the rotation direction of the first cover 30e is consistent with the rotation direction of the first adjusting member 36. After the first adjusting member 36 rotates to a predetermined position, it covers the first hole 30c through the first cover 30e. The rotation direction of the second cover 30f is consistent with the rotation direction of the second adjusting member 37. After the second adjusting member 37 rotates to a predetermined position, it covers the second hole 30d through the second cover 30f.

[0103] The present invention ensures stable airflow inside the molding chamber 30 by covering the first hole 30c with a first cover 30e and the second hole 30d with a second cover 30f, and prevents fluff pulp fibers S and polymer P from flying from the first hole 30c and the second hole 30d to the outside of the molding chamber 30.

[0104] In this embodiment, the first cover 30e and the second cover 30f are approximately "T" shaped structures to match the waist-shaped hole structure of the first hole 30c and the second hole 30d, thereby covering the first hole 30c and the second hole 30d.

[0105] Combination Figure 5 and Figure 8 According to an embodiment of the present invention, a flow control assembly 38 is provided at least below the second inlet 321 of the second molding chamber 32. The flow control assembly 38 includes a first flow control element 381 and a second flow control element 382 arranged at intervals along the CD direction. The first flow control element 381 and the second flow control element 382 respectively enter from the outside of the second molding chamber 32 and extend into the interior of the second molding chamber 32.

[0106] The first flow control element 381, located inside the second forming chamber 32, has a first inclined portion 381a, and the second flow control element 382, ​​also located inside the second forming chamber 32, has a second inclined portion 382a. The inclination angles of the first inclined portion 381a and the second inclined portion 382a are adjustable to regulate the feed rate of the mixture of fluff pulp fiber S and polymer P.

[0107] The present invention adjusts the feed rate of the mixture of fluff pulp fiber S and polymer P by changing the flow area of ​​the mixture at the second outlet 322 through the flow control component 38.

[0108] The present invention adjusts the size of the first feed inlet 311 and the second feed inlet 321 by the first adjusting member 36, adjusts the size of the second feed inlet 321 and the third feed inlet 331 by the second adjusting member 37, and adjusts the feeding amount of the mixture of fluff pulp fiber S and polymer P in the second forming chamber 32 by the flow control component 38, thereby improving feeding stability, improving the mixing uniformity of fluff pulp fiber S and polymer P, and ensuring that polymer P and fluff pulp fiber S are evenly distributed and achieve the optimal ratio. At the same time, it can also flexibly adjust the thickness of each layer of the absorbent structure.

[0109] like Figure 5 and Figure 8 As shown, the fiber deposition unit 40 is located downstream of the first molding chamber 31, the second molding chamber 32, and the third molding chamber 33 (i.e., molding chamber 30). The fiber deposition unit 40 is used to deposit fluff pulp fibers S and a mixture of fluff pulp fibers S and polymer P to form an absorbent core W.

[0110] The fiber accumulation unit 40 includes: a fiber accumulation drum 41, a forming unit 43 disposed on the outer periphery of the fiber accumulation drum 41; and a partitioning mechanism 42 disposed inside the fiber accumulation drum 41.

[0111] The fiber accumulation drum 41 has a cylindrical structure, the molding unit 43 is connected to the fiber accumulation drum 41, and the partitioning mechanism 42 includes a first negative pressure zone 421 and a demolding zone 422.

[0112] like Figure 8 As shown, the outer side of the molding unit 43 in the circumferential direction is provided with a plurality of recesses 431 for depositing fluff pulp fibers S and a mixture of fluff pulp fibers S and polymer P to form an absorbent core W.

[0113] The fiber drum 41 is configured to carry the molding unit 43 and rotate it around its own rotation center at a predetermined speed along the first rotation direction a1, so that the molding unit 43 rotates cyclically in the first negative pressure zone 421 and the demolding zone 422.

[0114] Specifically, the fiber drum 41 is connected to the drive mechanism. The drive mechanism drives the fiber drum 41 to rotate around its own rotation center O1, thereby driving the molding unit 43 to rotate at a predetermined speed along the first rotation direction a1, so that the molding unit 43 rotates cyclically in the first negative pressure zone 421 and the demolding zone 422.

[0115] The first rotation direction a1 of the fiber accumulation drum 41 and the forming unit 43 can be clockwise or counterclockwise, depending on the flow direction.

[0116] like Figure 5 As shown, in this embodiment, the first rotation direction a1 of the fiber accumulation drum 41 and the forming unit 43 is counterclockwise. Looking along the first rotation direction a1 of the fiber accumulation drum 41 and the forming unit 43, the first discharge port 312 of the first forming chamber 31 is located upstream of the second discharge port 322 of the second forming chamber 32, and the second discharge port 322 of the second forming chamber 32 is located upstream of the third discharge port 332 of the third forming chamber 33.

[0117] There is a predetermined first interval d1 between the first discharge port 312 and the second discharge port 322, the size of which is 20mm to 60mm; there is a predetermined second interval d2 between the second discharge port 322 and the third discharge port 332, the size of which is 20mm to 60mm.

[0118] A first sealing element 44 is provided between the first discharge port 312 and the second discharge port 322, and a second sealing element 45 is provided between the second discharge port 322 and the third discharge port 332. The first sealing element 44 is correspondingly provided in the first interval d1, and the second sealing element 45 is correspondingly provided in the second interval d2.

[0119] The first seal 44 and the second seal 45 are used to prevent air leakage from the fiber drum 41. For example, the first seal 44 and the second seal 45 are felt wool.

[0120] A negative pressure is formed inside the first negative pressure zone 421 to adsorb the fluff pulp fiber S and the mixture of fluff pulp fiber S and polymer P into the molding unit 43 to form the absorbent core W.

[0121] A first air blowing device 422e is provided inside the demolding area 422 to blow air to the bottom of the molding unit 43 so as to demold the molded absorbent core W.

[0122] Specifically, the first negative pressure zone 421 is connected to an external negative pressure mechanism (such as a fan, negative pressure generator, etc.), thereby generating negative pressure inside the first negative pressure zone 421.

[0123] The fiber accumulation drum 41 and the forming unit 43 have interconnected vent holes. The discharge ports of the forming chamber 30 (the first discharge port 312 of the first forming chamber 31, the second discharge port 322 of the second forming chamber 32, and the third discharge port 332 of the third forming chamber 33) correspond to the first negative pressure zone 421 of the fiber accumulation unit 40, thereby forming a negative pressure airflow in the first forming chamber 31, the second forming chamber 32, and the third forming chamber 33.

[0124] Under the action of negative pressure airflow, fluff pulp fibers S enter the first forming chamber 31 through the first feed port 311 for dispersion and conveying, and are then output through the first discharge port 312 to the recess 431 of the forming unit 43 of the fiber accumulation unit 40 to form the third absorbent layer W3 of the absorbent core W.

[0125] Under the action of negative pressure airflow, fluff pulp fibers S and polymer P enter the second molding chamber 32 through the second feed port 321 and mix with each other in the second molding chamber 32. The molding unit 43 rotates to the second discharge port 322, and the mixture of fluff pulp fibers S and polymer P is output through the second discharge port 322 to the third absorbent layer W3 in the recess 431 of the molding unit 43, forming the second absorbent layer W2 of the absorbent core W.

[0126] Under the action of negative pressure airflow, fluff pulp fibers S enter the third forming chamber 33 through the third feed port 331 for dispersion and conveying. The forming unit 43 rotates to the third discharge port 332, and the fluff pulp fibers S are output from the third discharge port 332 to the second absorbent layer W2 in the recess 431 of the forming unit 43 of the fiber accumulation unit 40, forming the first absorbent layer W1 of the absorbent core W, thereby forming a "sandwich" structure.

[0127] like Figure 5 As shown, according to an embodiment of the present invention, the first negative pressure zone 421 is divided into a first adsorption zone 421a, a second adsorption zone 421b and a third adsorption zone 421c.

[0128] The first adsorption zone 421a is set to correspond to the first discharge port 312, the second adsorption zone 421b is set to correspond to the second discharge port 322, and the third adsorption zone 421c is set to correspond to the third discharge port 332. The negative pressure value of the second adsorption zone 421b is greater than the negative pressure value of the first adsorption zone 421a, and the negative pressure value of the first adsorption zone 421a is greater than the negative pressure value of the third adsorption zone 421c.

[0129] After the three absorbent layers of the absorbent core W are formed (i.e., downstream of the third discharge port 332), the fiber drum 41 carries the forming unit 43 away from the first negative pressure zone 421 and then enters the demolding zone 422. The demolding zone 422 is equipped with a first air blowing device 422e, which is connected to an external air blowing source. The first air blowing device 422e blows air to the bottom of the forming unit 43, thereby demolding the absorbent core W inside the recess 431. The demolded absorbent core W is received by the first conveying unit 50 on the downstream side.

[0130] like Figure 5 As shown, according to an embodiment of the present invention, the absorbent core forming apparatus 100 further includes: a first conveying unit 50, disposed on the outer periphery of the fiber accumulation unit 40 and corresponding to the demolding area 422, for receiving the demolded absorbent core W and transferring the absorbent core W to the second conveying unit 60.

[0131] The second conveying unit 60 is located downstream of the first conveying unit 50 and is used to composite the absorbent core W onto the coating layer W10 and convey it downstream.

[0132] Specifically, the first conveying unit 50 includes a transfer drum 51, a plurality of first driven rollers 52, and a first conveyor belt 53 surrounding the transfer drum 51 and the plurality of first driven rollers 52.

[0133] The outer periphery of the transfer drum 51 has a conveying surface 51s, and the interior has a second negative pressure zone 511 and a second air blowing device 50e. The conveying surface 51s and the first conveyor belt 53 have communicating vent holes (not shown).

[0134] The transfer drum 51 is configured to drive the transfer surface 51s to rotate about axis O2 in a second rotation direction a2. The transfer drum 51 has a receiving position N1 for receiving the absorbent core W and a transferring position N2 for transferring the absorbent core W. The transferring position N2 is located downstream of the receiving position N1, and the area between the receiving position N1 and the transferring position N2 defines a second negative pressure area 511.

[0135] After demolding, the absorbent core W is received at receiving position N1 by the first conveyor belt 53 of the first conveying unit 50, and is transported to the downstream transfer position N2 as the transfer drum 51 rotates. A second air blowing device 50e is provided at the transfer position N2. The second air blowing device 50e is located outside the second negative pressure zone 511 and blows air onto the absorbent core W, causing the absorbent core W to be blown to the second conveying unit 60.

[0136] The second conveying unit 60 includes a drive roller 61, a plurality of second driven rollers 62, and a second conveyor belt 63 surrounding the drive roller 61 and the plurality of second driven rollers 62.

[0137] A vacuum box 64 is also provided inside the second conveyor belt 63. The vacuum box 64 is a hollow structure and is connected to an external negative pressure mechanism, so that there is negative pressure inside the vacuum box 64. There are multiple holes (not shown) on the top of the vacuum box 64. The second conveyor belt 63 also has multiple through holes (not shown). The holes in the vacuum box 64 are connected to the through holes.

[0138] The continuous coating layer W10 is conveyed to the second conveying unit 60, where it is adsorbed and held. An adhesive (not shown) is applied to the inner surface of the coating layer W10. The absorbent core W is conveyed above the continuous coating layer W10 via the first conveying unit 50 and fixed with an adhesive.

[0139] The coating layer W10 and the absorbent core W undergo a folding process (not shown) and a cutting process (not shown) on the downstream side to finally form a single absorber W0.

[0140] The following points need to be explained: (1) The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0141] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the invention, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being “above” or “below” another element, the element may be “directly” located “above” or “below” the other element or there may be intermediate elements.

[0142] (3) Where there is no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0143] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An absorbent forming apparatus having mutually orthogonal transverse, longitudinal, and CD directions, characterized in that, The absorber forming apparatus includes: A pulverizing unit has an input port and an output port arranged along the CD direction. The pulverizing unit is used to pulverize sheet-like fluff pulp into flocculent fluff pulp fibers. The axial direction of the pulverizing unit is consistent with the transverse direction, and the input port and the output port extend transversely. A polymer feeding unit is located on one side of the crushing unit along the CD direction; the polymer feeding unit includes a feeding pipe with a vertical section extending longitudinally, and one end of the vertical section has a discharge port; the polymer feeding unit is used to transport polymers. A forming chamber is located downstream of the crushing unit; the width of the forming chamber is consistent with the transverse direction, and includes a first forming chamber, a second forming chamber, and a third forming chamber that are independent of each other; in the transverse direction, the second forming chamber is located between the first forming chamber and the third forming chamber; The first forming chamber includes a first inlet and a first outlet, the second forming chamber includes a second inlet and a second outlet, and the third forming chamber includes a third inlet and a third outlet; The first forming chamber and the third forming chamber are used to transport fluff pulp fibers, and the second forming chamber is used to transport fluff pulp fibers after they are evenly mixed with polymers. A fiber deposition unit is located downstream of the first molding chamber, the second molding chamber, and the third molding chamber; the fiber deposition unit is used to deposit fluff pulp fibers and a mixture of fluff pulp fibers and polymers to form an absorbent core. The output port of the crushing unit is connected to the first feed port, the second feed port and the third feed port; the discharge port of the feeding pipe extends to the output port of the crushing unit and is located above the second feed port of the second forming chamber.

2. The absorbent forming apparatus according to claim 1, characterized in that, The molding chamber is rotatably equipped with a first adjusting member and a second adjusting member; The first adjusting component is used to adjust the size of the first feed inlet and the second feed inlet; The second adjusting member is used to adjust the size of the second feed port and the third feed port.

3. The absorbent forming apparatus according to claim 2, characterized in that, A first fixing member is provided between the first feed port and the second feed port, and a second fixing member is provided between the second feed port and the third feed port; The first adjusting member is installed above the first fixing member, and the second adjusting member is installed above the second fixing member.

4. The absorbent forming apparatus according to claim 2, characterized in that, The angle between the first adjusting member and the second adjusting member and the lateral direction is β, and the angle range of β is 30°≤β≤150°.

5. The absorbent forming apparatus according to claim 3, characterized in that, A first support column is installed above the first fixing member, and a second support column is installed above the second fixing member; The first adjusting member is rotatably mounted on the first support column, and the second adjusting member is rotatably mounted on the second support column; A first hole is provided on the upper part of the molding chamber along the rotation trajectory of the first adjusting member, and a second hole is provided on the upper part of the molding chamber along the rotation trajectory of the second adjusting member; When the first adjusting member is rotated to the predetermined position, the first adjusting member is fixed by the locking member passing through the first hole; When the second adjusting member is rotated to the predetermined position, the second adjusting member is fixed by the locking member passing through the second hole.

6. The absorbent forming apparatus according to claim 5, characterized in that, A first cover is rotatably mounted on the first support column; a second cover is rotatably mounted on the second support column. When the first cover rotates to cover the first hole, the first cover is fixed by a locking member passing through the first hole; When the second cover rotates to cover the second hole, the second cover is secured by a locking member passing through the second hole.

7. The absorbent forming apparatus according to claim 1, characterized in that, The feeding pipe is configured to be adjustable in either the lateral or longitudinal direction, so that the discharge port of the feeding pipe can move laterally or longitudinally above the second inlet of the second forming chamber.

8. The absorbent forming apparatus according to claim 1, characterized in that, The feeding pipe is made of stainless steel, and the inner wall of the feeding pipe is treated with pickling and passivation or electrolytic polishing.

9. The absorbent forming apparatus according to claim 1, characterized in that, The output port of the pulverizing unit has a first end and a second end on both sides along the longitudinal direction; Along the longitudinal direction, the vertical distance between the discharge port of the feeding pipe and the first end does not exceed one-half of the vertical distance between the first end and the second end.

10. The absorbent forming apparatus according to claim 1, characterized in that, There is a predetermined first gap between the first discharge port and the second discharge port, and the size of the first gap is in the range of 20mm to 60mm; There is a predetermined second gap between the second discharge port and the third discharge port, and the size of the second gap ranges from 20mm to 60mm.

11. The absorbent forming apparatus according to claim 10, characterized in that, A first sealing element is provided between the first discharge port and the second discharge port; a second sealing element is provided between the second discharge port and the third discharge port; The first seal is disposed in the first interval, and the second seal is disposed in the second interval.

12. The absorbent forming apparatus according to claim 1, characterized in that, The fiber-bonding unit includes: Accumulated fiber drum; A molding unit located on the outer periphery of the fiber accumulation drum; And a partitioning mechanism located inside the fiber drum; The fiber accumulation drum has a cylindrical structure, and the molding unit is connected to the fiber accumulation drum; the partitioning mechanism includes a first negative pressure zone and a demolding zone; The fiber drum is configured to rotate the molding unit around its own rotation center at a predetermined speed along a first rotation direction, so that the molding unit circulates between the first negative pressure zone and the demolding zone. A negative pressure is formed inside the first negative pressure zone to adsorb the fluff pulp fibers and the mixture of fluff pulp fibers and polymers into the molding unit to form an absorbent core. The demolding area is equipped with a first air blowing device for blowing air onto the bottom of the molding unit to demold the molded absorbent core.

13. The absorbent forming apparatus according to claim 12, characterized in that, The outer side of the molding unit in the circumferential direction is provided with multiple recesses for depositing fluff pulp fibers and a mixture of fluff pulp fibers and polymers to form an absorbent core.

14. The absorbent forming apparatus according to claim 12, characterized in that, The first negative pressure zone is divided into a first adsorption zone, a second adsorption zone, and a third adsorption zone; The first adsorption zone is set to correspond to the first discharge port, the second adsorption zone is set to correspond to the second discharge port, and the third adsorption zone is set to correspond to the third discharge port. The negative pressure value of the second adsorption zone is greater than the negative pressure value of the first adsorption zone, and the negative pressure value of the first adsorption zone is greater than the negative pressure value of the third adsorption zone.

15. The absorbent forming apparatus according to claim 1, characterized in that, The absorber forming apparatus further includes: The first conveying unit is located on the outer periphery of the fiber accumulation unit and is used to receive the absorbent core after demolding and transfer the absorbent core to the second conveying unit. The second conveying unit is located downstream of the first conveying unit and is used to composite the absorbent core onto the coating layer and convey it downstream.

16. The absorbent forming apparatus according to claim 1, characterized in that, A flow control component is provided at least below the second inlet of the second forming chamber; The flow control assembly includes a first flow control element and a second flow control element arranged at intervals along the CD direction. The first flow control element and the second flow control element penetrate from the outside of the second molding chamber and extend into the inside of the second molding chamber.

17. The absorbent forming apparatus according to claim 16, characterized in that, The first flow control element located inside the second forming chamber has a first inclined portion, and the second flow control element has a second inclined portion; The tilt angles of the first and second inclined portions are adjustable to adjust the feed rate of the mixture of fluff pulp fibers and polymers.

18. The absorbent forming apparatus according to claim 1, characterized in that, The first forming chamber, the second forming chamber, and the third forming chamber are arranged sequentially along the axial direction of the crushing unit.

19. The absorbent forming apparatus according to claim 1, characterized in that, The polymer feeding unit is equipped with a spraying assembly, which provides spraying power to the polymer so as to spray the polymer outward through the discharge port.

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