Adsorption and transmission mechanism for online composite polymer particles and intelligent manufacturing system

Abstract

The invention relates to the technical field of automatic production, and particularly provides an adsorption conveying mechanism for online composite polymer particles and an intelligent manufacturing system. The adsorption conveying mechanism comprises a rotating support and a plurality of arc-shaped adsorption pieces arranged on the rotating support. A negative pressure cavity is formed in the rotating support and connected with the arc-shaped adsorption piece. A plurality of fixed channels and a plurality of material suction channels are arranged on the arc-shaped adsorption sheet; the fixed channel and the material suction channel are communicated with the negative pressure cavity; the fixed channel forms a fixed area on the arc-shaped adsorption sheet; and the material suction channel forms a material suction area on the arc-shaped suction sheet. The scheme has the advantages that (1) the on-line compounding of the absorption layer is realized, and the quantitative and fixed-point scattering of polymer particles in the absorption layer is realized; the production efficiency of the absorption layer is greatly improved, the water absorption effect of the absorption layer can be optimized, and the utilization rate of polymer particles is improved. And (2) by increasing and optimizing negative pressure action channels, the deformation of the fabric is reduced, and the overall combination effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of automated production technology, and more specifically, to an adsorption and transmission mechanism for online composite polymer particles and an intelligent manufacturing system. Background Art

[0002] Sanitary napkins and diapers, as widely applicable disposable hygiene products, are crucial for improving quality of life and safeguarding the health and hygiene of the elderly, young children, and women. The absorbent layer (also known as the absorbent core) of sanitary napkins and diapers is their core structure. Total absorption capacity and absorption rate are key quality indicators for evaluating the absorbent layer. The simplest absorbent layer typically has a three-layer structure, consisting of a top fabric, a bottom fabric, and polymer particles (also known as water-absorbing polymer particles) sandwiched between them. While a variety of absorbent layer designs exist, the basic design remains one with polymer particles as the central layer, with additional layers above and below. Existing absorbent layers are constructed by randomly spreading polymer particles onto the bottom fabric, then covering the top fabric with the particles, enclosing them within the fabric using a folded edge. This design leaves the polymer particles active between the two layers, which can lead to accumulation, slowing absorption and reducing the efficiency of the particles. Furthermore, production requires a separate production line, making it difficult to integrate with diaper or sanitary napkin production lines.

[0003] To achieve the production of an absorbent layer online and ensure an orderly and quantitative distribution of polymer particles within the interlayer, existing technologies use a combination of negative pressure and adhesive bonding to simultaneously adsorb the base fabric and polymer particles when compounding the base fabric, enabling connection to existing production lines. However, while this method secures the polymer particles through the base fabric, allowing them sufficient time to bond with the adhesive layer of the base fabric, it can easily lead to severe deformation in the middle of the base fabric. Due to structural differences in the deformed base fabric, negative pressure cavities of varying depths will form. These different cavities make it difficult for the polymer particles to be evenly distributed, preventing quantitative and point-specific distribution and reducing the utilization rate and absorption effect of the polymer particles. Summary of the Invention

[0004] The present invention aims to overcome at least one defect (shortcoming) of the above-mentioned prior art and provide an adsorption and transmission mechanism and an intelligent manufacturing system for online composite polymer particles, so as to improve the distribution uniformity of the polymer particles.

[0005] The solution provided by the present invention is an adsorption and transmission mechanism for online composite polymer particles, comprising: a rotating bracket, a driving device for driving the rotating bracket to rotate, and a plurality of arc-shaped adsorption sheets arranged on the rotating bracket; a negative pressure chamber is provided in the rotating bracket, and the negative pressure chamber is connected to the arc-shaped adsorption sheet; two adjacent arc-shaped adsorption sheets are connected end to end to form a continuous adsorption surface on the rotating bracket; a plurality of fixed channels and a plurality of suction channels are provided on the arc-shaped adsorption sheet; the fixed channels and the suction channels are connected to the negative pressure chamber; the fixed channels form a fixed area on the arc-shaped adsorption sheet; the suction channels form a suction area on the arc-shaped adsorption sheet.

[0006] In this technical solution, the adsorption and transmission mechanism adsorbs the polymer particles onto the base fabric to achieve the combination of the two. The base fabric is adsorbed on the arc-shaped adsorption sheet by negative pressure, and the polymer particles are adsorbed on the base fabric by negative pressure. The base fabric is, for example, a non-woven fabric.

[0007] The fixed channel is connected to the negative pressure chamber, and the negative pressure generated by the negative pressure chamber adsorbs and fixes the bottom fabric to the arc-shaped adsorption sheet through the fixed channel and the suction channel. In the process of polymer particles dropping onto the adsorbed object, since the fixed channel is outside the suction area, the bottom fabric is tightened and fully fixed from the outside, so that the bottom fabric is prevented from being displaced toward it due to the negative pressure generated by the suction area, and the excessive deformation of the bottom fabric caused by the suction channel in the suction area is suppressed, thereby preventing the polymer particles from accumulating in a small amount of suction channels, achieving uniformity, and avoiding the waste of polymer particles caused by excessive accumulation and incomplete compounding; if the fixed area is missing, the bottom fabric is easy to loosen during the polymer particle dropping process, causing the bottom fabric to collapse or wrinkle, causing the polymer particles to even accumulate in collapsed or wrinkled areas that are not in the preset position. In this solution, the adsorbed object is fixed to prevent it from loosening, thereby avoiding excessive concentration of particles, thereby improving the uniformity of particle distribution.

[0008] The suction channel is connected to the negative pressure chamber, so that the negative pressure generated by the negative pressure chamber adsorbs the polymer particles onto the bottom fabric through the suction channel. If there is only one large suction channel in the suction area, the polymer particles will be concentrated together and connected into one piece. During use, after the polymer particles absorb liquid, the part in contact with the liquid is full, and the liquid gradually diffuses to the surrounding polymer particles, thus limiting the liquid absorption speed. In this solution, multiple suction channels are set in the suction area. It can be understood that the multiple suction channels are spaced apart, that is, multiple intervals are formed in the suction area on the bottom fabric. During use, after the liquid contacts the polymer particles, it can not only extend to the surrounding areas through the particles themselves, but also be diverted to the surrounding areas through the intervals. The liquid is absorbed by the particles on the surrounding areas, which increases the diversion speed and liquid absorption speed, and improves the comfort of product use. In addition, manufacturers can arrange the positions of the suction channels to form different patterns, and design patterns according to the liquid absorption requirements of specific products, thereby further improving the liquid absorption efficiency of the product.

[0009] Furthermore, the arc-shaped adsorption sheet further comprises: a separation area; the fixing areas are respectively arranged on both sides of the material absorption area; the fixing areas on the same side of two adjacent arc-shaped adsorption sheets are connected; and the separation area is arranged around the material absorption area.

[0010] In the present technical solution, the fixing areas are respectively arranged on both sides of the suction area, which can fix the two sides of the bottom fabric, thereby flattening the middle part and preventing it from sinking, facilitating the control of the particle dropping position and improving the uniformity of particle dropping. The setting of the fixing areas on both sides also avoids the fixation of the bottom fabric from affecting the dropping of polymer particles, and also avoids the dropping of particles from falling into the fixing area and affecting the fixation of the bottom fabric.

[0011] The separation area separates the suction area and the fixed area to avoid mutual influence between the two. On two adjacent arc-shaped adsorption sheets, the fixed areas located on the same side are connected, and the same side is understood to be a side close to each other. If the fixed area is not connected, the underlying fabric is not fixed at the connection between the two adjacent arc-shaped adsorption sheets. When one of the adsorption sheets fails and becomes loose, the underlying fabric located in the suction area is easily tilted under the pulling, resulting in inaccurate placement of the polymer particles. Therefore, in this solution, the fixed area is set to be connected, so that the underlying fabric is still fixed at the edge of the arc-shaped adsorption sheet. Even if the adsorption sheet becomes loose, it will not pull the underlying fabric located in the suction area to tilt, thereby ensuring that the polymer particles can be accurately dropped in the target area, avoiding waste, and preventing the efficiency of absorbing liquid from being affected by the reduction in the amount of particles dropped in the suction area.

[0012] Furthermore, the cross-section of the fixing channels is circular and / or elliptical, and is arranged in at least two rows in the fixing area; the fixing channels in the same row are distributed at intervals; and the fixing channels in two adjacent rows are distributed in a staggered manner.

[0013] In this technical solution, the fixing channels can be arranged in two, three or four rows, etc. The fixing channels in two adjacent rows are staggered so that the positions of the fixing channels exactly correspond to the channel intervals in adjacent rows, further improving the fixation of the bottom fabric.

[0014] Furthermore, the suction area includes: a suction opening and a plurality of separation sheets; the separation sheets separate the suction opening into a plurality of closely arranged suction channels; and the cross-section of the suction channel is polygonal.

[0015] In this technical solution, the suction opening corresponds to the location where the particles are dropped, and the separator corresponds to the area where the particles are not dropped, forming a diversion channel. The cross-section can be triangular or quadrilateral, etc. The close arrangement of the suction channels ensures that the diversion channels can immediately contact new polymer particles after diverting the liquid to the surrounding area, ensuring both diversion efficiency and liquid absorption efficiency after diversion.

[0016] Furthermore, the separator includes: a first separator and a second separator; the first separators are parallel to each other and spaced apart in the suction opening; the second separators are parallel to each other and spaced apart in the suction opening; the first separator and the second separator intersect to form a closely arranged suction channel.

[0017] Furthermore, the suction opening is rectangular; the first separator is perpendicular to an edge of one side of the suction opening; the second separator is perpendicular to the first separator; the distance between two adjacent first separators is equal, the distance between two adjacent second separators is equal, and the width of the suction channel is 4 to 12 times the thickness of the first separator or the second separator;

[0018] In this technical solution, if the cross-sections of the suction channels in each part are of different sizes, the negative pressure effect will be greatly different, and the thickness of the polymer particles adsorbed by each suction channel will be different. Different thicknesses can easily cause local expansion of the water-absorbing layer, affecting comfort and fit. In addition, if there are too many local polymer particles, it will hinder the overall water absorption uniformity, reduce the utilization rate of the polymer particles, and cause problems such as side leakage. In this solution, the distance between two adjacent separators is equal, so that each suction opening is not only consistent in shape, but also in size. This ensures that the negative pressure effect of the suction channel is uniform and improves the consistency of the suction height of each suction channel, so that the water absorption speed of each part of the absorption layer is the same during use, preventing the above-mentioned situation from occurring and improving the comfort of the product.

[0019] The width of the suction channel may be 4 times, 5 times or 6 times the thickness of the first separator; or the width of the suction channel may be 4 times, 5 times or 6 times the thickness of the second separator.

[0020] Furthermore, the length of the second separator is greater than that of the first separator; the upper surface of the first separator is coplanar with the surface of the arc-shaped adsorption sheet; a gap is provided between the upper surface of the second separator and the surface of the arc-shaped adsorption sheet to form a recess between two adjacent first separators.

[0021] In this technical solution, the second separator is disposed below the first separator. The upper surface of the first separator is coplanar with the upper surface of the arc-shaped adsorption sheet. When the bottom fabric is adsorbed onto the arc-shaped adsorption sheet, the depression allows the bottom fabric to form a corresponding recess at the material suction port, allowing this recess to accommodate more polymer materials, further increasing the capacity of each material suction channel for polymer particles and improving liquid absorption performance. In addition, if polymer particles happen to fall into the corresponding position of the separator, since both sides of the separator are recessed, the particles will more easily fall into the recess under the action of adsorption force and gravity, thereby preventing the particles from falling into the corresponding position of the separator and concentrating in the recess, thus ensuring the good diversion function of the separation diversion channel.

[0022] Furthermore, a closed structure is provided in the material absorption area; the upper surface of the closed structure is coplanar with the surface of the arc-shaped adsorption sheet; the closed structure is connected to the separator and at least one side is spaced apart from the edge of the material absorption area.

[0023] In this technical solution, the bottom fabric's corresponding closed structure is bonded to the top layer's material, sandwiching the polymer particles to form a water-absorbing structure. The upper surface of the closed structure is coplanar with the surface of the curved adsorption sheet, preventing any depressions in the bottom fabric corresponding to the closed structure. When particles land on the closed structure, they are easily absorbed by the adjacent suction port, preventing waste caused by particles landing in the closed structure.

[0024] The closed structure is connected to the separator and has a gap between at least one side and the edge of the absorption area, so that the space separated by the closed structure can be connected, and the liquid can be diverted to different positions for absorption, ensuring good liquid absorption capacity and efficiency.

[0025] Another object of the present invention is to provide an intelligent manufacturing system for a water-absorbing layer, comprising: a feeding assembly for conveying fabric; a blanking assembly for adding polymer particles; a gluing assembly for applying glue to the fabric; an adsorption and transmission mechanism for compounding the polymer particles with the fabric; and a pressing assembly for compounding multiple layers of fabric; a control assembly and any of the above-mentioned adsorption and transmission mechanisms for online compounding of polymer particles. The control assembly connects the feeding assembly, blanking assembly, gluing assembly, pressing assembly, and adsorption and transmission mechanism. The feeding assembly continuously conveys the flat fabric, which is then fixed and transported by the adsorption and transmission mechanism after being coated with glue by the gluing assembly. During the process, polymer particles are added several times by the blanking assembly to form a semi-finished bottom layer, which is then covered with fabric. Finally, the water-absorbing layer is output after being pressed by the pressing assembly.

[0026] The intelligent manufacturing system applies the adsorption and transmission mechanism to the preparation of the water-absorbing layer. Through the intelligent manufacturing system, the preparation of the water-absorbing layer can be orderly combined with the production line of diapers or sanitary napkins to form a continuous production line, realize online integrated compounding, and realize intelligent production through the control of the control assembly.

[0027] Furthermore, the negative pressure chamber is divided into a plurality of independent adsorption units within the rotating bracket; the number of the adsorption units matches the arc-shaped adsorption sheet; the fixed channel and the suction channel on each arc-shaped adsorption sheet are connected to the corresponding adsorption unit.

[0028] Independent adsorption units can rationally adjust the negative pressure distribution, not only facilitating precise control of the negative pressure adsorption force of each arc-shaped adsorption sheet, but also avoiding mutual interference. Through independent adjustment, the negative pressure chamber can have sufficient adsorption force to penetrate the bottom layer of fabric and act on the upper surface during the blanking process, thereby guiding the uniform distribution of polymer particles in advance. This also significantly reduces the power and energy consumption of the negative pressure providing equipment.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The online compounding of the absorption layer is realized, and the polymer particles are spread quantitatively and at fixed points in the absorption layer. This not only greatly improves the production efficiency of the absorption layer, but also optimizes the water absorption effect of the absorption layer and improves the utilization rate of the polymer particles.

[0031] (2) By increasing and optimizing the channels for negative pressure, the deformation, offset and wrinkles caused to the underlying fabric are effectively reduced; the excessive deformation and local deformation of the underlying fabric caused by the suction channel are suppressed, thereby improving the uniformity of the distribution of polymer particles and improving the overall bonding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of the adsorption and transmission mechanism of Example 1.

[0033] Figure 2 This is a partial exploded view of the adsorption and transmission mechanism of Example 1.

[0034] Figure 3 This is a side view of the curved adsorption sheet of Example 1.

[0035] Figure 4 Schematic diagram of the structure of the arc-shaped adsorption sheet of Example 1.

[0036] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0037] Figure 6 Schematic diagram of the structure of the arc-shaped adsorption sheet of Example 1.

[0038] Figure 7 Schematic diagram of the structure of the arc-shaped adsorption sheet of Example 1.

[0039] Figure 8 Schematic diagram of the structure of the arc-shaped adsorption sheet of Example 1.

[0040] Figure 9 Schematic diagram of the structure of the composite system of Example 2.

[0041] Figure markings: rotating bracket 100, negative pressure chamber 200, arc-shaped adsorption sheet 300, fixed channel 310, fixed area 311, suction channel 320, suction area 321, separation area 330, first separation sheet 340, second separation sheet 350, closing structure 400, feeding assembly 500, blanking assembly 600, glue coating assembly 700. DETAILED DESCRIPTION

[0042] The accompanying drawings are for illustrative purposes only and are not to be construed as limiting the present invention. To better illustrate the following embodiments, some components in the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will appreciate that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0043] Example 1

[0044] refer to Figures 1 to 5, this embodiment provides an adsorption and transmission mechanism for online composite polymer particles, comprising: a rotating bracket 100, a driving device for driving the rotating bracket 100 to rotate, and a plurality of arc-shaped adsorption sheets 300 arranged on the rotating bracket 100; a negative pressure chamber 200 is provided in the rotating bracket 100, and the negative pressure chamber 200 is connected to the arc-shaped adsorption sheets 300; two adjacent arc-shaped adsorption sheets 300 are connected end to end to form a continuous adsorption surface on the rotating bracket 100; a plurality of fixed channels 310 and a plurality of suction channels 320 are provided on the arc-shaped adsorption sheet 300; the fixed channels 310 and the suction channels 320 are connected to the negative pressure chamber 200; the fixed channels 310 form a fixed area 311 on the arc-shaped adsorption sheet 300; the suction channels 320 form a suction area 321 on the arc-shaped adsorption sheet 300.

[0045] The rotating bracket 100 is used to provide overall support, and is specifically a cylindrical hollow frame. The driving device is connected to the center of the rotating bracket. Specifically, the driving device can be a rotating motor with adjustable speed. The rotating shaft of the rotating motor is connected to the center of the rotating bracket 100, driving the rotating bracket 100 to rotate. The arc-shaped side of the rotating bracket 100 is hollow, and an arc-shaped adsorption sheet 300 is installed on it. The arc-shaped adsorption sheet 300 forms a closed ring after splicing. The arc-shaped adsorption sheet 300 is in direct contact with the bottom fabric. The negative pressure generated by the negative pressure chamber 200 not only fixes the bottom fabric on the surface of the arc-shaped adsorption sheet, but also extends the negative pressure to the outside of the arc-shaped adsorption sheet 300, so that the polymer particles are subjected to negative pressure before contacting the bottom fabric. The continuous adsorption surface facilitates continuous production and meets the combination of the production section of the absorbent layer and the production section of the diaper. Fixing channel 310 is used to maintain the continuous expansion of the base fabric under negative pressure, effectively preventing deformation of the base fabric. This suppresses the transitional changes in the depth of suction channel 320 and eliminates transitional depressions caused by variations in the base fabric itself. This ensures a uniform distribution of polymer particles, improving the composite effect and the quality of the absorbent layer. Fixing channel 310 is located outside suction area 321. This reduces interference with suction channel 320 and, during the blanking process, gradually closes suction channel 320, further strengthening the fixing effect of fixing channel 310 during the composite process of the polymer particles, thereby improving the effectiveness of securing the base fabric and preventing stretching.

[0046] Preferably, the arc-shaped adsorption sheet 300 further includes: a separation area 330; the fixing areas 311 are respectively arranged on both sides of the suction area 321; on two adjacent arc-shaped adsorption sheets 300, the fixing areas 311 located on the same side are connected; the separation area 330 is arranged around the suction area 321.

[0047] Separator 330 serves to narrow the area affected by negative pressure, ensuring its effectiveness and reducing the demand and power consumption of negative pressure equipment. It also separates different areas, reducing or even eliminating interference between them. The surrounding arrangement also facilitates cutting and segmenting. The continuous arrangement of the fixing zone ensures that both the unlaminated and laminated base fabrics are securely fixed during continuous production, thus meeting the requirements of long-distance continuous transmission and playing a crucial role in the online lamination process.

[0048] Preferably, the cross-section of the fixing channels 310 is circular and / or elliptical, and is arranged in at least two rows in the fixing area 311; the fixing channels 310 in the same row are distributed at intervals; and the fixing channels 310 in two adjacent rows are distributed in a staggered manner.

[0049] The fixed channel 310 can specifically be a through hole on the arc-shaped adsorption sheet. The circular or elliptical design can avoid sharp edges, so as to avoid damage to the edge of the underlying fabric under long-term negative pressure. Combined with the interval design, it can further protect the edge of the underlying fabric and avoid tearing. The staggered design makes up for the fixed gaps caused by the interval setting, and also avoids excessive pulling of the underlying fabric by the fixed channel.

[0050] Preferably, the suction area 321 includes: a suction opening and a plurality of partitions; the partitions partition the suction opening into a plurality of closely arranged suction channels 320; and the cross-section of the suction channels 320 is polygonal.

[0051] Different from the fixed area, the suction area 321 needs to ensure sufficient adhesion of polymer particles, and in order to ensure the accumulation of polymer particles, it is necessary to meet the needs of rapid diversion, uniform distribution and high utilization through a separated and tightly arranged design. By separating through a separator, on the one hand, the separator can extend the separated channel and reduce the interference between adjacent suction channels 320, and on the other hand, it can meet the need for tight arrangement. The polygon can specifically be a square. The square design can further provide a stable and reliable suction channel 320, so that the polymer particles are closer to each other due to the suction force of each suction channel 320, thereby improving uniformity. Furthermore, it can also be a regular hexagon.

[0052] Preferably, the separator includes: a first separator 340 and a second separator 350; the first separators 340 are parallel to each other and spaced apart in the suction opening; the second separators 350 are parallel to each other and spaced apart in the suction opening; the first separator and the second separator intersect to form a closely arranged suction channel 320.

[0053] In this embodiment, the interval between two adjacent first separators 340 is consistent with the interval between two adjacent second separators 350. The shape and size of the suction channel 320 can be flexibly adjusted by the interval between the separators.

[0054] Preferably, the length of the second separator 350 is greater than that of the first separator 340; the upper surface of the first separator 340 is coplanar with the surface of the arc-shaped adsorption sheet 300; and a gap is provided between the upper surface of the second separator 350 and the surface of the arc-shaped adsorption sheet 300 to form a recess between two adjacent first separators 340.

[0055] Preferably, the suction opening is rectangular; the first separator 340 is perpendicular to the edge of one side of the suction opening; the second separator 350 is perpendicular to the first separator 340; the distance between two adjacent first separators 340 is equal, the distance between two adjacent second separators 350 is equal, and the width of the suction channel 320 is 4 to 12 times the thickness of the first separator 340 or the second separator 350.

[0056] Specifically, the suction opening is preferably square.

[0057] Preferably, a closed structure 400 is further provided in the suction area 321; the upper surface of the closed structure 400 is coplanar with the surface of the arc-shaped adsorption sheet 300; the closed structure 400 is connected to the separator and at least one side is spaced apart from the edge of the suction area 321.

[0058] The closed structure 400 can form a blank area without polymer particles in the material absorption area 321. On the one hand, the closed structure is used to form an exposed area with glue, thereby forming a bonding area in the material absorption area 321 for the bottom fabric and the top fabric to be combined, thereby improving the resistance of the absorption layer to separation. On the other hand, the closed structure is mostly arranged in the middle of the material absorption area 321 to realize the diversion area in the middle of the absorption layer and improve the diversion speed. The closed structure 400 is connected to the separator so that the liquid in the diversion area can be quickly transferred through the diversion network formed by the separator. Specifically, the closed structure 400 is arranged in the middle of the material absorption area 321. The separation setting helps the closed structure 400 to be connected to more separators, thereby expanding the diversion effect.

[0059] refer to Figure 4 In some embodiments of the present invention, the closed structure 400 is in a cross shape, the suction area 321 is rectangular, the closed structure 400 is connected to the long side of the suction area 321, and is spaced apart from the short side of the suction area 321.

[0060] refer to Figure 6In some embodiments of the present invention, the enclosed structure 400 includes a sealing strip located in the middle of the suction zone. The suction zone 321 is rectangular, and the sealing strip extends along the long sides of the suction zone 321. The central sealing strip is rectangular in shape. In this curved suction sheet, the separator has a thickness of 0.8 mm to 1.2 mm, the suction channel has a square cross-section, and the width of the suction channel is 8 mm to 11 mm. The width of the enclosed structure 400 is twice the width of the suction channel, and its length is 12 times the width of the suction channel.

[0061] refer to Figure 7 In some embodiments of the present invention, the closed structure 400 includes an array of circular plates and three closed strips. The suction area 321 is rectangular. The closed strips are all extended along the long sides of the suction area 321, and the middle closed strip is longer than the closed strips on both sides.

[0062] refer to Figure 8 In some embodiments of the present invention, the closed structure 400 includes a plurality of closed strips, the suction area 321 is rectangular, a closed strip extending along its long side is provided in the middle of the suction area 321, and closed strips are provided on both sides of the closed strip at intervals.

[0063] Example 2

[0064] refer to Figure 9 This embodiment provides a composite system for a water-absorbing layer, including: a feeding component 500 for conveying fabrics; a blanking component 600 for adding polymer particles; a gluing component 700 for applying glue on the fabrics; an adsorption and transmission mechanism for compounding polymer particles with fabrics; a pressing component for compounding several layers of fabrics; and also includes a control assembly and an adsorption and transmission mechanism for online compounding of polymer particles provided in Example 1; the control assembly connects the feeding component 500, the blanking component 600, the gluing component 700, the pressing component and the adsorption and transmission mechanism.

[0065] The feeding component 500 continuously transports the flat fabric, and the fabric is fixed and transported by the adsorption transmission mechanism after being coated with glue by the coating component 700. In the process, the polymer particles are added several times by the blanking component 600 to form a bottom semi-finished product, and the fabric is covered. Finally, the water-absorbing layer is output after being pressed by the pressing component.

[0066] The suction and transmission mechanism includes: a rotating bracket 100, a driving device for driving the rotating bracket 100, and a plurality of arcuate suction plates 300 disposed on the rotating bracket 100. A negative pressure chamber 200 is provided within the rotating bracket 100, and the negative pressure chamber 200 is connected to the arcuate suction plates 300. Two adjacent arcuate suction plates 300 are connected end-to-end to form a continuous suction surface on the rotating bracket 100. The arcuate suction plates 300 are provided with a plurality of fixed channels 310 and a plurality of suction channels 320. The fixed channels 310 and the suction channels 320 are connected to the negative pressure chamber 200. The fixed channels 310 form a fixed area 311 on the arcuate suction plates 300, and the suction channels 320 form a suction area 321 on the arcuate suction plates 300. The driving device is connected to a control assembly.

[0067] The arc-shaped adsorption sheet 300 also includes a separation zone 330. The fixing zones 311 are located on either side of the material absorption zone 321. The fixing zones 311 on the same side of two adjacent arc-shaped adsorption sheets 300 are connected. The separation zone 330 surrounds the material absorption zone 321. The fixing channels 310 have a circular and / or elliptical cross-section and are arranged in at least two rows within the fixing zone 311. The fixing channels 310 within a row are spaced apart, and the fixing channels 310 in two adjacent rows are staggered.

[0068] The suction area 321 includes: a suction opening and multiple separators; the separators divide the suction opening into multiple closely spaced suction channels 320; the suction channels 320 have a polygonal cross-section. The separators include: a first separator 340 and a second separator 350; the first separators 340 are parallel to each other and spaced apart within the suction opening; the second separators 350 are parallel to each other and spaced apart within the suction opening; the first separators and the second separators intersect to form closely spaced suction channels 320. The length of the second separator 350 is greater than that of the first separator 340; the upper surface of the first separator 340 is coplanar with the surface of the arc-shaped suction sheet 300; a gap is provided between the upper surface of the second separator 350 and the surface of the arc-shaped suction sheet 300 to form a recess between two adjacent first separators 340. The suction opening is rectangular; the first separator 340 is perpendicular to the edge of one side of the suction opening; the second separator 350 is perpendicular to the first separator 340; the distance between two adjacent first separators 340 is equal, the distance between two adjacent second separators 350 is equal, and the width of the suction channel 320 is 4 to 12 times the thickness of the first separator 340 or the second separator 350.

[0069] A closed structure 400 is further provided in the suction area 321 ; the upper surface of the closed structure 400 is coplanar with the surface of the arc-shaped suction sheet 300 ; the closed structure 400 is connected to the separator and at least one side is spaced apart from the edge of the suction area 321 .

[0070] Furthermore, the negative pressure chamber 200 is divided into multiple independent adsorption units within the rotating bracket 100; the number of these adsorption units matches the number of the arcuate adsorption sheets 300; the fixed channel 310 and the material suction channel 320 on each arcuate adsorption sheet 300 communicate with the corresponding adsorption unit. In this embodiment, there are seven arcuate adsorption sheets, each of the same size.

[0071] The blanking assembly is arranged above one side of the adsorption and transmission mechanism, which is helpful for the design of layer blanking, and not being arranged directly above can make the entire blanking process in an inclined state, helping to timely detach excess polymer particles. The blanking port of the blanking assembly is an arc-shaped opening, and the distance between the arc-shaped opening and the continuous adsorption surface is equal; the arc-shaped opening matches the size of the suction area and leaves a gap with the continuous adsorption surface, and the gap is less than 1 cm. The arc-shaped opening forms a tight and close state, which can confine the polymer particles to the specified position without hindering the movement of the rotating bracket, on the one hand reducing the scattering and contamination of the polymer particles, and on the other hand improving the efficiency of compounding. Flexible scrapers are also provided on both sides of the blanking port, and a gap is provided between the lower surface of the flexible scraper and the continuous adsorption surface.

[0072] Example 3

[0073] This embodiment provides a composite system of a water-absorbing layer, which differs from embodiment 2 in that:

[0074] It also includes a connected detection component and an alarm device. After the polymer particles are added to the fabric, a bottom semi-finished product is formed. The detection component is used to detect the distribution uniformity of the polymer particles on the bottom semi-finished product. If the distribution uniformity is unqualified, the detection component triggers the alarm device. The detection component and the alarm device are both connected to the control assembly.

[0075] Furthermore, the detection component includes:

[0076] A light source is used to illuminate the bottom semi-finished product; preferably, the light source is a bar light source.

[0077] An image acquisition device is configured to capture an image of the semi-finished bottom layer. The control assembly analyzes the distribution uniformity of the polymer particles using the image. If the distribution uniformity is unsatisfactory, an alarm device is triggered. Once the alarm device is triggered, staff can promptly remove the unqualified product from the production line. Preferably, the image acquisition device is an industrial camera.

[0078] Furthermore, the detection component also includes a trigger device connected to the control assembly, which is used to detect the real-time movement speed of the fabric and trigger the image acquisition device every time the fabric moves a specific distance. Preferably, the trigger device is an encoder, and more preferably, the encoder is a rotary encoder installed on the production line, which detects the fabric's movement speed in real time and triggers the industrial camera to take a picture every time the fabric moves a specific distance. The specific distance can be set as needed, and when only sampling inspection is required, the specific distance can be set longer.

[0079] In a preferred embodiment of the present invention, the unqualified distribution uniformity is specifically characterized by the presence of continuous blank areas or clustered areas. The blank areas are regions without polymer particles, and their size can be set as needed, for example, 5×5 mm. The clustered areas are regions with excessive polymer particle density, for example, where the polymer particle density exceeds twice the average value, and their size can be set as needed, for example, 5×5 mm.

[0080] As a preferred embodiment of the present invention, the distribution uniformity is unqualified specifically as follows: the bottom semi-finished product photographed by the industrial camera is evenly divided into multiple areas by the control assembly, and the polymer particles are identified, the coefficient of variation (CV value) of the number of polymer particles in each area is calculated, and compared with a pre-set threshold value. If it is greater than the threshold value, the uniformity is unqualified.

[0081] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An adsorption and transmission mechanism for online composite polymer particles, include: A rotating bracket, a driving device for driving the rotating bracket to rotate, and a plurality of arc-shaped adsorption sheets arranged on the rotating bracket; A negative pressure chamber is provided in the rotating bracket, and the negative pressure chamber is connected to the arc-shaped adsorption sheet; Two adjacent arc-shaped adsorption sheets are connected end to end to form a continuous adsorption surface on the rotating bracket; It is characterized in that The arc-shaped adsorption sheet is provided with a plurality of fixed channels and a plurality of material suction channels; The fixed channel and the material suction channel are in communication with the negative pressure chamber; The fixed channel forms a fixed area on the arc-shaped adsorption sheet; The material suction channel forms a material suction area on the arc-shaped adsorption sheet.

2. The adsorption and transmission mechanism for online composite polymer particles according to claim 1, characterized in that: The arc-shaped adsorption sheet further includes: a separation area; The fixing areas are respectively arranged on both sides of the material suction area; On two adjacent arc-shaped adsorption sheets, the fixed areas on the same side are connected; The separation zone is arranged around the material suction zone.

3. The adsorption and transmission mechanism for online composite polymer particles according to claim 1, characterized in that: The fixing channels have a circular and / or elliptical cross-section and are arranged in at least two rows within the fixing area; Fixed channels in the same row are distributed at intervals; The fixed channels in two adjacent rows are staggered.

4. The adsorption and transmission mechanism for online composite polymer particles according to any one of claims 1 to 3, characterized in that: The suction area includes: a suction opening and a plurality of partitions; The separation sheet divides the suction opening into a plurality of closely arranged suction channels.

5. The adsorption and transmission mechanism for online composite polymer particles according to claim 4, characterized in that: The cross section of the material suction channel is polygonal.

6. The adsorption and transmission mechanism for online composite polymer particles according to claim 4, characterized in that: The separator includes: a first separator and a second separator; The first separation sheets are arranged parallel to each other and at intervals in the material suction opening; The second separators are arranged parallel to each other and at intervals in the suction opening; The first spacer and the second spacer intersect to form closely arranged material suction channels.

7. The adsorption and transmission mechanism for online composite polymer particles according to claim 6, characterized in that: The suction opening is rectangular; The first separator is perpendicular to an edge of one side of the suction opening; The second separator is perpendicular to the first separator; The distance between two adjacent first separators is equal, and the distance between two adjacent second separators is equal.

8. The adsorption and transmission mechanism for online composite polymer particles according to claim 7, characterized in that: The width of the material suction channel is 4 to 12 times the thickness of the first separator or the second separator.

9. The adsorption and transmission mechanism for online composite polymer particles according to claim 6, characterized in that: The second separator is longer than the first separator; The upper surface of the first separator is coplanar with the surface of the arc-shaped adsorption sheet; A gap is provided between the upper surface of the second separator and the surface of the arc-shaped adsorption sheet to form a recess between two adjacent first separators.

10. The adsorption and transmission mechanism for online composite polymer particles according to any one of claims 4 to 9, characterized in that: A closed structure is also provided in the material suction area; The upper surface of the closed structure is coplanar with the surface of the arc-shaped adsorption sheet; The closed structure is connected to the separation sheet and a gap is left between at least one side of the closed structure and the edge of the suction area.

11. An intelligent manufacturing system for a water-absorbing layer, comprising: Feeding component, used for conveying fabrics; Blanking assembly, used to add polymer particles; Gluing component, used for applying glue on fabric; Lamination components, used to combine several layers of fabric; It is characterized in that it also includes a control assembly and an adsorption and transmission mechanism for online composite polymer particles as described in any one of claims 1 to 10, and the control assembly connects the feeding assembly, blanking assembly, gluing assembly, pressing assembly and adsorption and transmission mechanism.

12. The intelligent manufacturing system for a water absorbing layer according to claim 11, characterized in that: The negative pressure chamber is divided into a plurality of independent adsorption units within the rotating bracket; The number of the adsorption units matches the arc-shaped adsorption sheet; The fixed channel and the material suction channel on each arc-shaped adsorption sheet are communicated with the corresponding adsorption unit.

13. The intelligent manufacturing system for a water absorbing layer according to claim 11, characterized in that: It also includes a connected detection component and an alarm device. After the polymer particles are added to the fabric, a bottom semi-finished product is formed. The detection component is used to detect the distribution uniformity of the polymer particles on the bottom semi-finished product. If the distribution uniformity is unqualified, the detection component triggers the alarm device. The detection component and the alarm device are both connected to the control assembly.

14. The intelligent manufacturing system for a water absorbing layer according to claim 13, characterized in that: The detection assembly includes: a light source for illuminating the bottom semi-finished product; The image acquisition device is used to acquire the image of the bottom semi-finished product. The control assembly analyzes the distribution uniformity of the polymer particles through the image. When the distribution uniformity is unqualified, the alarm device is triggered.

15. The intelligent manufacturing system of the water absorbing layer according to claim 14, characterized in that: The detection component also includes a trigger device connected to the control assembly, and the trigger device is used to detect the real-time movement speed of the fabric. Every time the fabric moves a specific distance, the image acquisition device is triggered.

16. The intelligent manufacturing system for a water absorbing layer according to claim 14, characterized in that: The image acquisition device is an industrial camera, and the light source is a bar light source.

17. The intelligent manufacturing system for a water absorbing layer according to claim 13, characterized in that: The unqualified distribution uniformity specifically refers to the presence of continuous blank areas or clustered areas.

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