Paper pulp molding structure

Abstract

The utility model discloses a paper pulp molding forming structure which comprises a forming container, a mold assembly and a pulp homogenizing assembly, and the mold assembly used for paper pulp molding forming and the pulp homogenizing assembly used for promoting uniform forming of paper fibers are arranged in the forming container. The mold assembly comprises a mold bottom plate and a forming mold arranged at the upper part of the mold bottom plate, the slurry homogenizing assembly comprises a vibration device for promoting slurry homogenization and a porous plate, the porous plate is arranged on the inner side of the vibration device, and a reserved space for the slurry to freely flow is formed between the porous plate and the vibration device. According to the pulp homogenizing device, the pulp homogenizing assembly composed of the vibrating device and the perforated plate is arranged, after paper pulp enters the forming container, the ultrasonic vibrator generates vibration, the vibration is amplified through the perforated plate, paper fibers in the pulp are refined and uniform, meanwhile, the distribution uniformity of the paper fibers on a mold in the forming process is improved, and the forming quality of the pulp is improved. And the thickness uniformity and the product quality of a formed product are improved.

Description

Technical Field

[0001] This utility model belongs to the field of molding technology, specifically, it relates to a pulp molding structure. Background Technology

[0002] There are generally two existing methods for pulp molding: vacuum molding and extrusion molding. Extrusion molding involves pulp preparation, dilution and screening, extrusion molding, dewatering and drying. Controlling the moisture content in pulp extrusion molding is difficult, leading to product deformation due to high moisture content and a long production cycle, especially in the drying stage, which limits its efficiency for large-scale production. Vacuum molding, on the other hand, uses vacuum adsorption to form pulp fibers on a mold, followed by drying and shaping. Because of its speed, vacuum adsorption molding is suitable for mass production and is widely used in pulp molding. However, during use, uneven pulp composition can lead to uneven thickness of the molded wet blank.

[0003] In view of this, the present invention proposes a pulp molding structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, improve the homogenization effect of the pulp system, enhance the uniformity of pulp distribution in the mold, and improve the forming effect of wet pulp blanks, this utility model provides a pulp molding structure.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A pulp molding structure includes: a molding container, a mold assembly, and a homogenizing assembly. The molding container is provided with a mold assembly for pulp molding and a homogenizing assembly for promoting uniform molding of paper fibers. The mold assembly includes a mold base plate and a molding mold disposed on the upper part of the mold base plate. The homogenizing assembly includes a vibration device for promoting homogenization of the pulp, a perforated plate, and a guide plate. The perforated plate is disposed inside the vibration device and is arranged parallel to the vibration device.

[0007] Multiple guide plates are provided, which are evenly distributed on the side of the vibration device and are also provided on the inner wall of the forming container.

[0008] Furthermore, the perforated plate is positioned between the vibration device and the mold assembly, and the perforated plate is connected to the bottom wall of the forming container via a fastener.

[0009] Furthermore, the number of perforated plates is the same as the number of vibrating devices, and the perforated plates are provided with several through holes for the enlarged flow of slurry.

[0010] Furthermore, the vibration device is connected and fixed to the side wall of the molding container, and the vibration device is set on the side wall of the molding container in the same direction as the slurry feeding.

[0011] Furthermore, the guide plate has an overall arc-shaped plate structure and is a porous guide plate.

[0012] Furthermore, four guide vanes are provided, each located at one of the corners of the forming container, and the guide vanes are detachably connected to the inner wall of the forming container.

[0013] Furthermore, the molding container is equipped with a slurry pipe, one end of which has a feed inlet, and the other end is connected to the inner cavity of the molding container.

[0014] Furthermore, a return pipe is provided at the bottom of the slurry pipe, and a return port is provided at the end of the return pipe, and the return pipe is connected to the slurry pipe.

[0015] Furthermore, the bottom of the forming container is provided with an exhaust port, which is connected to a vacuum system to promote uniform adsorption and forming of the pulp liquid.

[0016] Furthermore, the forming mold is detachably connected to the mold base plate, and there is a preset distance between the forming mold and the side wall of the forming container; the forming mold is provided with a number of mold holes, and the mold holes are evenly distributed on the forming mold.

[0017] Based on the above technical solution, the technical solution proposed by this utility model has the following beneficial technical effects compared with the prior art:

[0018] 1. The pulp molding structure proposed in this utility model has multiple guide plates in the molding container, which can prevent the pulp from rushing into the molding container during the feeding process, causing uneven pulp composition or sedimentation. Under the guiding effect of the guide plates at each corner, the pulp is promoted to enter the vibrating device of the molding container evenly and gently, thereby improving the uniformity of pulp composition.

[0019] 2. By setting up a homogenizing assembly consisting of a vibration device and a perforated plate, after the pulp enters the forming container, the ultrasonic vibrator generates vibration. After being amplified by the perforated plate, the paper fibers in the pulp are refined and uniform. At the same time, the uniformity of the distribution of paper fibers on the mold during the forming process is improved, thereby improving the uniformity of the thickness of the formed product and the product quality.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the attached diagram:

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 3 This is a top view of the structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the left-side structure of this utility model.

[0027] In the figure: 1. Molding container; 11. Slurry pipe; 111. Feed inlet; 12. Return pipe; 121. Return outlet; 13. Vent; 2. Mold assembly; 21. Mold base plate; 22. Molding mold; 221. Mold hole; 3. Homogenizing assembly; 31. Vibration device; 32. Perforated plate; 33. Guide plate.

[0028] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] As attached Figure 1-4 As shown, this utility model provides a pulp molding structure, including: a molding container 1, a mold assembly 2, and a homogenizing assembly 3. The molding container 1 is provided with the mold assembly 2 for pulp molding and the homogenizing assembly 3 for promoting uniform molding of paper fibers. The mold assembly 2 includes a mold base plate 21 and a molding mold 22 disposed on the upper part of the mold base plate 21. The homogenizing assembly 3 includes a vibration device 31 for promoting pulp homogenization, a perforated plate 32, and a guide plate 33. The perforated plate 32 is disposed inside the vibration device 31 and is arranged parallel to the vibration device 31. Multiple guide plates 33 are provided, and the multiple guide plates are evenly distributed on the side of the vibration device 31 and are disposed on the inner wall of the molding container 1.

[0033] In the pulp molding process, the distribution of fibers in the pulp greatly affects the molding effect. Therefore, in this embodiment, a vibration device 31 is used to generate vibration, which helps to evenly distribute the paper fibers in the pulp and improve the quality of the finished product. A perforated plate 32 is provided inside the vibration device 31, and the through holes on the perforated plate 32 allow the pulp to flow freely, which helps to distribute the fibers in the pulp more evenly in the mold. Guided by the guide plate 33, the pulp first enters the vibration device 31 and the area around the perforated plate 32 for vibration and homogenization, and then flows to the molding die 22 for molding, which can promote the even distribution of paper fibers on the die and achieve good uniformity of the wet blank.

[0034] Furthermore, a reserved space is provided between the perforated plate 32 and the vibration device 31 to allow the pulp to flow freely, ensuring that the pulp has sufficient space for free flow and homogenization. It is evident that the structural design of the vibration device 31, the perforated plate 32, and the reserved space, by combining mechanical vibration and fluid mechanics principles, greatly improves the uniformity of pulp fiber distribution in the pulp, thereby enhancing the quality and production efficiency of pulp molding products.

[0035] As a further embodiment of this application, the molding container 1 is provided with a slurry pipe 11, one end of which is provided with a feed port 111, and the other end is connected to the inner cavity of the molding container 1.

[0036] It is easy to understand that the shape of the molding container 1 can be adapted to the shape of the product to be produced. It can be any one of the following: a cuboid, cube, cylinder, sphere, or polygonal shape with an internal cavity. Preferably, the molding container 1 is set as a cuboid with an internal cavity, which has a simple structure, regular internal space, high space utilization, and is convenient for large-scale production.

[0037] Furthermore, the molding container 1 can be configured as an open structure. Alternatively, a container lid can be provided on the top of the molding container, and the container lid can be detachably connected to the molding container, making it convenient for users to check the operation status inside the container and to carry out timely maintenance.

[0038] As attached Figure 1 As shown, the molding container 1 is equipped with a slurry pipe 11. Slurry is fed through the inlet 111 end of the slurry pipe 11, thereby conveying the slurry to the inner cavity of the molding container 1, so that the fiber suspension is conveyed from the slurry storage tank or the slurry supply system to the molding container 1. Optionally, the cross-section of the slurry pipe 11 can be any one of circular, square, elliptical, or polygonal. Preferably, in this embodiment, the cross-section of the slurry pipe 11 is set as a polygon.

[0039] As attached Figure 3 As shown, the connection between the pulp pipe 11 and the forming container 1 is flared. The flared structure provides more space for pulp flow, avoiding excessive or insufficient pulp in local areas, thus improving the consistency and quality of the finished product. At the same time, it facilitates the stable delivery of pulp into the forming container 1, avoiding uneven fiber distribution and bubble formation caused by turbulence, thereby improving the surface quality and internal structural stability of the product.

[0040] Furthermore, one or more inlets 111 may be provided at the end of the slurry pipe 11, and those skilled in the art can select and design them according to actual needs. Preferably, such as Figure 3-4 As shown, this embodiment has two discharge ports, which are symmetrically distributed about the pulp pipe 11 and spaced apart. This symmetrical design of the discharge ports promotes uniform distribution of the pulp within the forming container 1, ensuring consistent quality of the final product.

[0041] As a further embodiment of this application, a return pipe 12 is provided at the bottom of the slurry pipe 11, and a return port 121 is provided at the end of the return pipe 12, and the return pipe 12 is connected to the slurry pipe 11.

[0042] Specifically, the return pipe 12 is located at the bottom of the slurry pipe 11, and the return pipe 12 and the slurry pipe 11 are detachably connected or integrally formed. Alternatively, a return port 121 can be directly provided on the slurry pipe 11, which connects the drain pipe of the molding container 1 and the slurry pipe 11. This allows the remaining slurry in the molding container 1 after molding to be discharged sequentially through the drain pipe to the return pipeline, and then processed by the slurry system before being sent to the preparation tank through the main pipeline. From there, the slurry is output to the inlet 111 for recycling, thus avoiding waste of product raw materials.

[0043] As a further embodiment of this application, the bottom of the forming container 1 is provided with an exhaust port 13, which is connected to a vacuum system to promote uniform adsorption and forming of the pulp liquid. At the same time, the vacuum system helps to expel air from the pulp liquid by venting and pressurizing, thereby reducing the possibility of air bubbles appearing in the finished product.

[0044] Furthermore, regulating devices may be installed on the slurry pipe 11 and the return pipe 12. The regulating devices include, but are not limited to, control valves, flow meters, pressure gauges, etc., which can regulate the flow rate and pressure of the slurry in the pipe to meet the requirements of different products and processes.

[0045] As a further embodiment of this application, the mold base plate 21 and the molding mold 22 in the molding container 1 serve as basic components for pulp molding. The mold base plate 21 provides an installation position for the molding mold 22, which is located on the upper part of the mold base plate 21 and determines the final shape and size of the product.

[0046] As attached Figure 1 and attached Figure 3 As shown, the molding die 22 is provided with a plurality of die holes 221, and the die holes 221 are evenly distributed on the molding die 22.

[0047] Furthermore, the mold hole 221 is a concave hole with a certain shape provided on the forming mold 22. The shape of the mold hole 221 is specifically designed according to the shape of the required product. For example, the mold hole 221 can be any one or more of the following: circular, square, rectangular, elliptical, polygonal, or irregular shape. Preferably, as shown in the attached figure... Figure 3 As shown, the die hole 221 is a circular die hole with smooth edges and no sharp corners. The slurry flows smoothly in the die hole 221, which helps the fibers to be evenly distributed. Secondly, the circular die hole reduces stress concentration points, which can improve the durability of the product.

[0048] A filter screen is provided inside the forming mold 22 so that the paper fibers are evenly adsorbed on the filter screen, which is conducive to product forming. The pulp after being filtered by the filter screen flows out through the drain port and is returned to the pulp system for recycling.

[0049] Furthermore, the molding die 22 is detachably connected to the die base plate 21, and there is a preset distance between the molding die 22 and the side wall of the molding container 1.

[0050] Specifically, detachable connections include any one of the following: bolted connections, embedded connections, snap-fit ​​connections, magnetic connections, and hydraulic or pneumatic clamp connections.

[0051] As attached Figure 1 and attached Figure 3 As shown, the preset distance between the molding mold 22 and the molding container 1 is used to install the homogenizing assembly 3. The homogenizing assembly 3 allows the slurry to flow more smoothly within the mold, which helps to distribute the fibers evenly and prevents the slurry from settling prematurely. Specifically, the homogenizing assembly 3 includes a vibration device 31 and a perforated plate 32. The perforated plate 32 is disposed between the vibration device 31 and the mold assembly 2, and the perforated plate 32 is connected to the bottom wall of the molding container 1 by a fixing member.

[0052] Furthermore, the perforated plate 32 is a plate material parallel to the side wall of the molding container 1 and having a certain thickness. The bottom of the perforated plate 32 can be connected to the bottom wall of the molding container 1 by fixing screws.

[0053] The number of perforated plates 32 is the same as the number of vibrating devices 31, so that the perforated plates 32 and the vibrating devices 31 can be used together, and the perforated plates 32 are provided with a number of through holes for the flow of slurry.

[0054] Furthermore, the vibration device 31 is an ultrasonic vibration device 31. The ultrasonic vibration device 31 can work with the porous plate 32 to generate ultra-micro vibrations, which makes the slurry composition in the molding container 1 more uniform and promotes the uniform distribution of paper fibers on the mold during the molding process.

[0055] The vibration device 31 is connected and fixed to the side wall of the molding container 1. The vibration device 31 is set on the side wall of the molding container 1 in the same direction as the slurry feeding, which can maximize the uniformity of the slurry.

[0056] As a further embodiment of this application, the guide plate 33 has an overall arc-shaped plate structure, and the guide plate 33 is a porous guide plate. The porous guide plate can optimize the flow path of the material, reduce unnecessary flow resistance, prevent the slurry from entering the corners of the molding container 1 and causing turbulence in the feed, and guide the slurry to quickly reach the periphery of the vibration device 31 for homogenization.

[0057] Furthermore, four guide vanes are provided, each located at one of the corners of the forming container, and the guide vanes are detachably connected to the inner wall of the forming container.

[0058] The working process of the pulp molding structure in this utility model is as follows: The pulp slurry enters the molding container 1 through the feed port 111 of the slurry pipe 11. The ultrasonic vibration device 31 is activated, and the ultrasonic waves generate ultra-micro vibrations. The pulp slurry is guided by the guide plate 33, vibrated by the ultrasonic waves, and amplified by the perforated plate 32, so that the components in the pulp slurry are uniformly refined. The vacuum system draws a vacuum through the exhaust port 13, thereby uniformly adsorbing the fibers in the pulp slurry onto the filter screen of the molding mold 22. After the molding is completed, the slurry in the slurry tank is discharged through the drain pipe in sequence, and transported back to the slurry system through the return pipe 12. After being processed by the slurry system, it is stored in the preparation tank through the main pipeline. When needed, it is output to the feed port 111 through the preparation tank for recycling, avoiding the waste of product raw materials.

[0059] Compared with the prior art, the present invention, after adopting the above embodiments, has the following beneficial technical effects:

[0060] The pulp molding structure proposed in this utility model has multiple guide plates 33 inside the molding container 1, which can prevent the pulp from rushing into the molding container 1 during the feeding process, causing uneven pulp composition or sedimentation. Under the guiding effect of the guide plates 33 at each corner, the pulp is promoted to enter the vibrating device 31 around the molding container 1 evenly and gently, thereby improving the uniformity of pulp composition.

[0061] By setting up a homogenizing assembly 3 consisting of a vibration device 31 and a perforated plate 32, after the pulp enters the forming container 1, the ultrasonic vibrator generates vibration. After being amplified by the perforated plate 32, the paper fiber component in the pulp is refined and uniform. At the same time, the uniformity of the distribution of paper fibers on the mold during the forming process is improved, thereby improving the uniformity of the thickness of the formed product and the product quality.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pulp molding structure, characterized in that, include: A molding container, a mold assembly, and a homogenizing assembly, wherein the molding container is provided with the mold assembly and the homogenizing assembly; The mold assembly includes a mold base plate and a forming mold disposed on the upper part of the mold base plate. The homogenizing assembly includes a vibration device, a perforated plate and a guide plate. The perforated plate is disposed inside the vibration device and is arranged parallel to the vibration device. Multiple guide plates are provided, and the multiple guide plates are evenly distributed on the side of the vibration device, and the guide plates are provided on the inner wall of the forming container.

2. The pulp molding structure according to claim 1, characterized in that, The perforated plate is disposed between the vibration device and the mold assembly, and the perforated plate is connected to the bottom wall of the forming container by means of a fastener.

3. The pulp molding structure according to claim 2, characterized in that, The number of perforated plates is the same as the number of vibrating devices, and the perforated plates are provided with several through holes for the flow of slurry.

4. The pulp molding structure according to claim 1, characterized in that, The vibration device is connected and fixed to the side wall of the molding container, and the vibration device is set on the side wall of the molding container in the same direction as the slurry feeding.

5. The pulp molding structure according to any one of claims 1-4, characterized in that, The guide plate has an overall arc-shaped plate structure and is a porous guide plate.

6. The pulp molding structure according to claim 5, characterized in that, Four guide plates are provided, each located at one of the corners of the forming container, and the guide plates are detachably connected to the inner wall of the forming container.

7. The pulp molding structure according to claim 5, characterized in that, The molding container is equipped with a slurry pipe, one end of which is provided with a feed port, and the other end is connected to the inner cavity of the molding container.

8. The pulp molding structure according to claim 7, characterized in that, The bottom of the slurry pipe is provided with a return pipe, the end of the return pipe is provided with a return port, and the return pipe is connected to the slurry pipe.

9. The pulp molding structure according to claim 7, characterized in that, The bottom of the forming container is provided with an exhaust port, which is connected to a vacuum system to promote uniform adsorption and forming of the pulp liquid.

10. The pulp molding structure according to claim 5, characterized in that, The molding die is detachably connected to the die base plate, and there is a preset distance between the molding die and the side wall of the molding container; the molding die is provided with a plurality of die holes, and the die holes are evenly arranged on the molding die.

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