Plant fiber container wet embryo processing apparatus and process

Abstract

The application provides a plant fiber container wet embryo processing device and process, which comprises a pulp tank, a rack assembly, a transplanting mechanism, a pulp suction assembly and a cold pressing assembly; the pulp suction assembly is internally provided with a forming cavity, pulp enters the forming cavity through a cavity opening of the forming cavity to perform a pulp suction operation, the cavity opening of the forming cavity faces downward, the pulp suction assembly is away from a liquid surface of the first pulp tank, and the plant fiber container wet embryo preforming work is completed; the cold pressing assembly comprises an expansion body, the expansion body can enter the forming cavity along the cavity opening, the expansion body is internally filled with a recyclable object to make the expansion body expand, so as to extrude an inner wall of a preformed wet embryo in the forming cavity, and the plant fiber container wet embryo is formed. The plant fiber container wet embryo processing device and process realize the processing and forming of the plant fiber container wet embryo by adopting a vertical pulp suction operation and an expansion body inflation cold pressing operation mode, effectively improve the product quality and the product qualification rate of the plant fiber container processing, and greatly meet the market demand.

Description

Technical Field

[0001] This invention belongs to the field of wet processing of plant fiber container embryos, and in particular relates to a plant fiber container wet embryo processing equipment and process. Background Technology

[0002] Plant fiber molding is a wet preform manufacturing process that uses plant fibers as raw materials to create paper products with specific shapes using special molds on a molding machine. The manufacturing process includes pulping, pulp absorption, cold pressing, drying, and shaping. Plant fiber molding has advantages such as being green and environmentally friendly, and using renewable raw materials. It is mainly used for food containers, tableware, and product trays.

[0003] When manufacturing container products, traditional equipment mostly uses a horizontal suction method in the plant fiber molding and slurry absorption process. This means the container mold axis is placed horizontally, and the plant fiber slurry is drawn into the mold through adsorption. The filter structure within the mold removes water from the slurry, and the plant fibers adhere to the filter structure, thus forming the container's initial shape (i.e., a wet preform, generally referred to as a wet preform before the drying process). Because the horizontal suction method involves lifting the container horizontally from the slurry, the upper part of the container detaches from the liquid surface first, preventing further slurry absorption. Meanwhile, the area below the liquid level continues to absorb slurry, and the remaining slurry inside the paper-plastic container is discharged through the lower half due to gravity. Simultaneously, plant fibers accumulate in the lower half of the container, resulting in uneven wall thickness between the upper and lower halves—a phenomenon commonly known as slurry trapping.

[0004] For products with sealed containers, the flow rate of the slurry is relatively faster than the flow rate inside the container when it flows into the sealed area. This results in a relatively poor fiber adsorption effect at the sealed area, leading to unevenness and thinner wall thickness.

[0005] The dehydration process involves continuously applying vacuum after the mold is removed from the slurry to remove excess water from the wet blank.

[0006] In the cold pressing process of closed container products, it is necessary to squeeze the plant fiber container formed by suction slurry and further remove excess water to increase the structural strength of the wet preform. Usually, an expansion body is installed on the tooling that applies pressure inside the product. The expansion body is inflated and deflated to squeeze and shape the inner wall of the product. The expansion body is a consumable part with a short service life, high replacement frequency and high usage cost, which affects the production quality of the product.

[0007] The problems in the above two processes can easily lead to poor quality and pass rate of plant fiber container processing products, low production efficiency, and high costs, making it difficult to meet market demand. Summary of the Invention

[0008] In view of this, the present invention aims to provide a plant fiber container wet embryo processing equipment and process to solve at least one of the above-mentioned problems.

[0009] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0010] In a first aspect, the present invention provides a plant fiber container wet embryo processing device, the processing device comprising:

[0011] Slurry tank, frame assembly, transplanting mechanism, slurry suction assembly, and cold pressing assembly;

[0012] The transplanting mechanism is mounted on the frame assembly;

[0013] The suction assembly has a built-in forming cavity;

[0014] The transplanting mechanism causes the slurry suction component to move relative to the surface of the first slurry tank in the slurry pool. The slurry suction component penetrates deep into the surface of the first slurry tank, and the slurry in the first slurry tank enters the forming cavity through the cavity opening to perform the slurry suction operation. After the slurry suction operation is completed, the cavity opening of the forming cavity faces downward, and the slurry suction component moves away from the surface of the first slurry tank, thus completing the pre-forming of the wet preform of the plant fiber container.

[0015] The cold pressing assembly includes an expander that can enter the molding cavity through the opening. The expander is filled with a recyclable material to expand it, thereby squeezing the inner wall of the pre-formed wet embryo in the molding cavity to form a plant fiber container wet embryo.

[0016] Secondly, based on the same concept, the present invention also provides a process for processing wet preforms of plant fiber containers, including:

[0017] Including a molding cavity for forming a wet embryo of a plant fiber container;

[0018] The molding cavity enters the slurry;

[0019] The cavity opening faces downwards;

[0020] The slurry enters the molding cavity through the cavity opening. The air inside the molding cavity is discharged from the top of the molding cavity by connecting to the external atmospheric pressure or by vacuuming. By vacuuming, the liquid in the slurry is discharged through the filter structure in the molding cavity. The remaining plant fibers adhere to the filter structure, completing the slurry absorption.

[0021] The molding cavity is separated from the slurry surface, and excess water adhering to the plant fibers on the filter structure is discharged by vacuuming to dehydrate and form a pre-molded wet embryo.

[0022] An expandable expansion body enters the molding cavity through the cavity opening and squeezes the inner wall of the pre-formed wet blank to complete the cold pressing.

[0023] Compared with the prior art, the plant fiber container wet embryo processing equipment and process of the present invention have the following beneficial effects:

[0024] (1) The plant fiber container wet preform processing equipment and process of the present invention adopts a vertical suction operation, so that the cavity opening of the forming cavity is finally removed from the liquid surface of the slurry pool, which increases the suction time at the closing point of the container product, thereby increasing the fiber layer thickness at the closing point of the container product, effectively solving the problem of thin and uneven thickness at the closing point; at the same time, due to the vertical suction method, when the forming cavity is removed from the liquid surface, the excess slurry is discharged from the cavity opening of the forming cavity, solving the problem of horizontal suction in traditional equipment, ensuring the uniformity of the product wall thickness, and improving the product qualification rate of the container product;

[0025] By controlling the flow rate and pressure of the slurry in the cavity, the molding process of paper-plastic container products (forming wet blanks) can meet the requirements of wall thickness, strength, density and other aspects of the product. When it exists in multiple cavities, it can meet the requirements of wall thickness, strength, density and other aspects of the specified area, thereby ensuring the consistency of the product, improving the product qualification rate of paper-plastic containers, and greatly satisfying market demand.

[0026] By utilizing the inflation and deflation of the expander, and taking advantage of its contractile properties, the expander can smoothly enter or exit the product, reducing friction and extending its service life.

[0027] (2) The plant fiber container wet embryo processing equipment and process of the present invention utilizes the form of inflation and deflation of the expansion body and the shrinkable characteristics of the expansion body. The expansion body can be put into the guide column to ensure that the expansion body can smoothly enter or leave the product. Therefore, while increasing the diameter of the expansion body, the friction of the expansion body can be reduced. Because the expansion body with increased diameter is used for operation, the expansion ratio is reduced and the service life of the expansion body can be improved.

[0028] The one-way speed control valve is set as an explosion-proof structure for the expansion body. When an expansion body ruptures, the flow rate of the filler through the rupture point is much lower than the total flow rate of the filler when it enters the rectifier box. Therefore, it will not have too much impact on other expansion bodies, thus ensuring that the remaining products can be produced normally.

[0029] (3) The plant fiber container wet embryo processing equipment or process described in this invention not only meets the high quality requirements of wet embryo production, but also improves the product qualification rate and greatly increases the service life of the equipment's vulnerable parts.

[0030] (4) In this invention, the molding cavity enters the slurry pool and the inside of the molding cavity is in a closed state. The air inside the cavity cannot be discharged and the liquid cannot fill the entire cavity. As a result, when the vacuum is turned on to suck the slurry, the gas and liquid inside the cavity mix and cause serious disturbance, resulting in product damage. Connecting the external atmospheric pressure to the top of the cavity or adding a vacuum device can discharge the excess air inside the cavity and avoid product damage. At the same time, controlling the size of the opening of the pipe connected to the external atmospheric pressure can adjust the negative pressure inside the cavity and thus control the wall thickness of the product molding. Attached Figure Description

[0031] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0032] Figure 1 This is a schematic diagram of the first angle structure of the plant fiber container wet embryo processing equipment according to an embodiment of the present invention;

[0033] Figure 2 This is a second-angle structural schematic diagram of the plant fiber container wet embryo processing equipment according to an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the first angle structure of the suction assembly according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the second angle structure of the suction assembly according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the third angle structure of the suction assembly according to an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram showing the detailed structure of the suction assembly according to an embodiment of the present invention;

[0038] Figure 7 This is a planar sectional view of the suction assembly according to an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the mold base plate and mold pad structure according to an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the mold substrate structure according to an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the locking unit structure according to an embodiment of the present invention;

[0042] Figure 11 This is a schematic diagram of the cold-pressing assembly structure according to an embodiment of the present invention;

[0043] Figure 12 This is a schematic diagram of the rectifier box and snap-fit ​​assembly according to an embodiment of the present invention;

[0044] Figure 13 This is a schematic diagram of the limiting structure described in an embodiment of the present invention;

[0045] Figure 14 This is a schematic diagram of the structure of the expansion body and guide post installed in the rectifier box according to an embodiment of the present invention;

[0046] Figure 15 This is a schematic cross-sectional view of the expansion body surrounding the guide post according to an embodiment of the present invention;

[0047] Figure 16 This is a schematic cross-sectional view of the expansion body contracting around the guide post according to an embodiment of the present invention;

[0048] Figure 17 This is a cross-sectional schematic diagram of the expansion body in its natural state around the guide post according to an embodiment of the present invention.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Slurry tank; 101. First slurry tank; 102. Second slurry tank; 2. Frame assembly; 3. Transfer mechanism; 31. Robotic arm; 4. Molding mold component; 41. Molding assembly; 411. Mold base plate; 412. Mold pad; 413. First flow through hole; 414. Second flow through hole; 415. Internal fixing hole; 416. Through hole; 417. Positioning hole; 418. Limiting plate; 419. Positioning block; 4110. Handle; 4111. Limiting block; 4112. Positioning locking component; 42. Front mold; 421. Molding cavity; 43. Mold back plate; 431. Cavity; 432. Through hole; 5. Locking mechanism; 51. Locking unit; 511. Mounting block 512. Connecting column; 513. Contact; 514. Elastic compression component; 515. Fixing block; 516. Locking block; 52. Pull rod; 53. Groove; 6. Air compressor pipeline; 7. Vacuum pipeline; 8. Switch valve; 9. Regulating valve; 10. Pressure regulating pipeline; 11. Pressure control valve; 12. Pressure detection unit; 13. Cold pressing assembly; 131. Guide column; 132. Airflow channel; 133. Flow guide hole; 134. Expansion body; 135. Rectifier box; 136. Limiting groove; 137. One-way speed regulating valve; 138. Base; 139. Limiting structure; 1310. Baffle; 1311. Stop block; 1312. Top pin; 1313. Spring; 1314. Buckle. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] Please see Figure 1 and Figure 2 As shown, in a first aspect, this embodiment provides a plant fiber container wet embryo processing device, the processing device comprising:

[0056] 1. Slurry tank; 2. Frame assembly; 3. Transplanting mechanism; 4. Slurry suction assembly and 5. Cold pressing assembly;

[0057] Transplanting mechanism 3 is mounted on frame assembly 2;

[0058] The suction assembly has a built-in forming cavity 421;

[0059] The transplanting mechanism 3 causes the slurry suction component to move relative to the liquid surface of the first slurry tank 101 of the slurry pool 1. The slurry suction component penetrates into the liquid surface of the first slurry tank 101, and the slurry in the first slurry tank 101 enters the forming cavity 421 through the cavity opening of the forming cavity to perform the slurry suction operation. After the slurry suction operation is completed, the cavity opening of the forming cavity 421 faces downward, and the slurry suction component moves away from the liquid surface of the first slurry tank 101, thus completing the pre-forming of the wet preform of the plant fiber container.

[0060] The cold pressing assembly 13 includes an expansion body 134 that can enter the molding cavity 421 through the cavity opening. The expansion body 134 is filled with a recyclable material to expand it. The recyclable material is preferably a gas, and the expansion body 134 is preferably an air bladder, to compress the inner wall of the pre-formed wet embryo in the molding cavity 421 to form a plant fiber container wet embryo.

[0061] Specifically, in this embodiment, the servo motor driving the transplanting mechanism 3 on the frame assembly 2 is controlled to work. The vertically arranged chain drive drives the robotic arm to move up and down and left and right. The robotic arm drives the slurry suction component to vertically penetrate into or away from the liquid surface of the first slurry tank 101 of the slurry pool 1. At the same time, with the cooperation of external control equipment, the slurry suction operation of the slurry suction component is carried out. The flow rate and pressure in the slurry suction component are controlled to complete the pre-forming work of the plant fiber container wet embryo. After the slurry suction operation is completed, the transplanting mechanism 3 drives the slurry suction component to enter the cold pressing station. The expansion body 134 set in the cold pressing component enters the forming cavity 421 along the cavity opening. The expansion body 134 is filled with recyclable material to expand it, so as to squeeze the inner wall of the pre-formed wet embryo in the forming cavity 421 and discharge excess water, and finally obtain the formed plant fiber container wet embryo.

[0062] In addition, the transplanting mechanism 3 can also be connected to the slurry tank 1 to drive the slurry tank 1 to move up and down, so that the slurry suction component can be deeper or farther away from the liquid surface of the first slurry tank 101.

[0063] The frame assembly 2 here can be a wall, frame, or other structure, as long as it is a device that can install the transplanting mechanism 3.

[0064] It should be noted that the transplanting mechanism 3 described in this embodiment is a conventional technical means well known to those skilled in the art, and will not be described in detail here. At the same time, the control system for driving and controlling the transplanting mechanism 3 shares a control system with the entire paper-plastic molding production line. The control system involved in this embodiment is a conventional technical means well known to those skilled in the art, and this invention has not improved it, so it will not be described in detail here.

[0065] like Figure 11 , Figure 16 and Figure 17 As shown, the inflator 134 in this embodiment is an airbag, as... Figure 11 As shown, guide post 131 serves as the support structure for the airbag. Guide post 131 is connected to an external inflation device and / or de-inflation device via an air tube to expand or contract the diameter of the airbag. The inflation device can fill the airbag with recyclable materials, such as gases, liquids, high-temperature gases, and high-temperature liquids, through guide post 131, thereby inflating the airbag. The inflated airbag is used to compress the inner wall of the preformed wet blank.

[0066] The selection of the outer diameter of the airbag can include: smaller than the diameter of the product opening in the natural state, or smaller than the diameter of the container opening in the vacuum contraction state, as well as matching the diameter of the airbag and the container opening in other states, as long as the airbag can enter the container.

[0067] The plant fiber container wet embryo processing equipment described in this embodiment controls the slurry suction component to vertically penetrate or move away from the liquid surface of the first slurry tank 101 through the transplanting mechanism 3. The cavity opening of the forming cavity 421 is set facing the liquid surface of the first slurry tank 101. When the slurry suction component detaches from the liquid surface of the first slurry tank 101, excess slurry will flow out through the cavity opening.

[0068] By controlling the flow rate and pressure inside the suction component, the vacuum level inside the forming cavity 421 can be controlled to adjust the state during suction or dehydration. By vacuuming, the plant fibers are attached to the forming cavity 421 of the suction component and dehydrated, thus achieving the pre-forming of the plant fiber container wet preform. Then, the suction component is transferred to the cold pressing station by the transplanting mechanism 3. The expansion body 134 set in the cold pressing component is used to squeeze the inner wall of the plant fiber container inside the forming cavity 421 to remove excess water and obtain the formed plant fiber container wet preform.

[0069] This embodiment employs a vertical suction operation, ensuring that the opening of the forming cavity 421 is finally removed from the liquid surface of the first slurry tank 101. This increases the suction time at the slurry outlet of the container product, thereby increasing the fiber layer thickness at the outlet and effectively solving the problem of thin and uneven thickness at the outlet. Simultaneously, due to the vertical suction method, excess slurry is discharged from the opening of the forming cavity 421 when it leaves the liquid surface, resolving the problem of uneven wall thickness in containers caused by horizontal suction in traditional equipment, and ensuring uniform wall thickness. This vertical suction operation is not limited to the opening being at a 90-degree angle to the liquid surface; other angles are also acceptable, as long as excess slurry is discharged from the opening when the container leaves the liquid surface.

[0070] In this embodiment, the airbag is inflated and deflated. The expansion of the airbag compresses the inner wall of the plant fiber container in the molding cavity 421, thereby expelling excess water and increasing the structural strength of the plant fiber container.

[0071] The plant fiber container wet preform processing equipment described in this embodiment achieves the processing and shaping of plant fiber container wet preforms by adopting a vertical suction operation and a cold pressing operation with air inflation of the expander 134. This effectively improves the product quality and product qualification rate of plant fiber container processing and greatly meets market demand.

[0072] In some implementations, such as Figures 3 to 7As shown, the slurry suction assembly includes several molding mold components 4, which cooperate to form a molding cavity 421. The molding mold components 4 are connected to the robotic arm 31 of the transfer mechanism 3. The robotic arm 31 controls the opening and closing actions of the molding mold components 4. When the product to be processed is a container with a closed opening, it is necessary to use several molding mold components 4 to cooperate to form a molding cavity 421. Also, due to the characteristics of the container with a closed opening, it is easier for slurry to accumulate.

[0073] Specifically, the pulp suction assembly described in this embodiment is provided with a plurality of forming mold components 4, which cooperate with each other to form a forming cavity 421. The forming mold components 4 are connected to the robotic arm 31 of the transplanting mechanism 3. By controlling the movement of the robotic arm 31, the opening and closing actions of the forming mold components 4 are completed, thereby realizing the pulp suction operation of plant fiber pulp.

[0074] It should be noted that this embodiment is explained using two molding mold components 4 as an example. In addition to this embodiment, it is also applicable to suction assemblies on the market that consist of three or more molding mold components 4, that is, several molding mold components 4 cooperate to form a molding cavity 421, which will not be described further here.

[0075] like Figure 6 and Figure 7 As shown, the molding die component 4 includes a molding assembly 41, a front mold 42, and a mold back plate 43;

[0076] The front mold 42 is mounted on the molding component 41. The molding component 41 is detachably connected to the mold back plate 43. The mold back plate 43 is provided with a locking mechanism 5 to lock and fix the molding component 41 and the mold back plate 43.

[0077] Specifically, in this embodiment, a locking mechanism 5 is provided on the mold back plate 43. By operating the locking mechanism 5, the operator can quickly assemble and disassemble the molding component 41 and the mold back plate 43.

[0078] The front mold 42 has a forming cavity 421, and the mold back plate 43 has one or more cavities 431. The cavity 431 is connected to the forming cavity 421. Each cavity 431 has one or more through holes 432, and the through holes 432 are connected to external equipment through connecting pipes.

[0079] Specifically, the front-end mold 42 described in this embodiment is provided with a forming cavity 421, which is connected to the cavity 431 provided on the mold back plate 43. The cavity 431 is connected to external equipment through a connecting pipe. By controlling the external equipment, the plant fibers in the plant fiber pulp sucked into the forming cavity 421 are attached to the filter structure in the forming cavity 421. The remaining liquid enters the cavity 431 through the filter structure and is discharged through the connecting pipe, thus realizing the pulp suction operation.

[0080] The front mold 42 is connected to the mold back plate 43 through the molding component 41, and the molding component 41 adopts a structure that can quickly adapt to different front mold 42 forms, thereby improving flexibility.

[0081] In some implementations, such as Figure 8 and Figure 9 As shown, the molding component 41 includes a mold base plate 411 and a mold pad 412;

[0082] The mold substrate 411 is provided with at least one flow area, and a first flow passage hole 413 is provided in the flow area;

[0083] The mold pad 412 is detachably connected to the mold base plate 411, and the mold pad 412 is arranged corresponding to the flow area. The mold pad 412 is provided with a second flow through hole 414 that can communicate with the first flow through hole 413.

[0084] Specifically, in this embodiment, the mold plate is configured as a detachable mold base plate 411 and a mold pad plate 412. At least one flow area is divided on the mold base plate 411, and the mold pad plate 412 is arranged corresponding to the flow area. A first flow passage hole 413 is provided in each flow area, and a second flow passage hole 414 that can communicate with the first flow passage hole 413 is provided on the mold pad plate 412, so that the plant fiber slurry can pass through the first flow passage hole 413 and the second flow passage hole 414.

[0085] Furthermore, such as Figure 8 and Figure 9 As shown, this embodiment is explained using two flow areas and two mold pads 412 as an example. In this embodiment, the first flow passage hole 413 and the second flow passage hole 414 both include a plurality of third flow passage holes arranged along the first direction, and a first gap is reserved between adjacent third flow passage holes; and;

[0086] Multiple fourth flow through holes are provided along the second direction, and a second gap is reserved between adjacent fourth flow through holes;

[0087] The fourth flow through hole is located below the third flow through hole.

[0088] It should be noted that the first direction described in this embodiment is the vertical direction, and multiple third flow through holes are vertically arranged on the mold base plate 411 and the mold pad 412. The third flow through holes are arranged at intervals. The second direction described in this embodiment is the horizontal direction, and multiple fourth flow through holes are correspondingly arranged below the third flow through holes.

[0089] In this embodiment, taking a bottle-shaped paper-plastic container as an example, the concept can be extended to closed containers with openings. The third flow passage corresponds to the upper half of the bottle-shaped paper-plastic container, while the fourth flow passage corresponds to the lower half. The third and fourth flow passages ensure the flow of slurry between the upper and lower parts of the bottle-shaped paper-plastic container. The two types of flow passages are mainly designed to correspond to the shape of the processed product. In this embodiment, the bottle-shaped paper-plastic container consists of a bottle body and a bottle mouth, with different required flow rates or volumes.

[0090] It should be noted that this embodiment does not specifically limit the specific circulation area or the number of mold pads 412. The number and size of the mold pads 412 described in this embodiment can be flexibly selected according to the actual site conditions to meet the needs of container products with different structures, and the adaptability is strong.

[0091] Compared to traditional operations that require replacing the mold base plate 411, this embodiment allows for the replacement of the mold pad 412 according to different types of container products. The quantity and size of the mold pad 412 can be flexibly selected based on the actual site conditions (mainly the shape of the product to be processed), resulting in low replacement costs and effective savings in production costs. Furthermore, each replacement only requires replacing the mold pad 412, making the replacement simple and easy to operate, minimizing space utilization, and effectively saving storage space.

[0092] In some implementations, such as Figure 9 As shown, the mold base plate 411 is provided with a plurality of internal fixing holes 415;

[0093] The mold base plate 412 is provided with a through hole 416 that can communicate with the inner fixing hole 415.

[0094] Specifically, in this embodiment, to install the mold pad 412 on the mold base plate 411, several internal fixing holes 415 are provided at the periphery or center of the mold base plate 411, and through holes 416 communicating with the internal fixing holes 415 are provided on the mold pad 412. The front mold 42 is provided with mounting holes corresponding to the internal fixing holes 415. The front mold 42 and the mold pad 412 are fixed together on the mold base plate 411 by fasteners. It should be noted that the fasteners described in this embodiment can be fastening screws or fastening bolts, as long as they can fix the front mold 42 and the mold pad 412 on the mold base plate 411.

[0095] It should be noted that in the prior art, the common technical means for setting the position of the internal fixing hole 415 is to open the internal fixing hole 415 at the corresponding position according to the installation position of the mold. However, in this embodiment, all the internal fixing holes 415 at all positions are reserved on the mold base plate 411. The fixing position is selected based on the actual site conditions. In order to adapt to container products with different structural types and to facilitate the disassembly and replacement of mold pads 412 of different sizes, the reservation of all internal fixing holes 415 is also related to the detachable connection between the mold pad 412 and the mold base plate 411 for easy replacement. If the mold plate structure is not of this type, the function of reserving all the internal fixing holes 415 cannot be achieved.

[0096] In some implementations, such as Figure 9 As shown, the mold base plate 411 is provided with a positioning hole 417, and a positioning pin is provided in the positioning hole 417 for positioning the front mold 42 provided at the front end of the mold plate.

[0097] Specifically, in order to facilitate the positioning and fixing of the front mold 42, mold pad 412 and mold base plate 411, the positioning hole 417 provided on the mold base plate 411 is used, and the positioning pin is inserted into the positioning hole 417 to realize the positioning and fixing of the front mold 42, mold pad 412 and mold base plate 411. The positioning pin described in this embodiment is not shown in the figure.

[0098] In some implementations, such as Figure 6 As shown, both sides of the mold back plate 43 are provided with limiting plates 418, and the limiting plates 418 on both sides are provided with corresponding inner grooves to form guide slides for pulling out the forming component 41.

[0099] The mold base plate 411 is provided with a positioning block 419 for positioning it;

[0100] The number of positioning blocks 419 must be at least two;

[0101] A handle 4110 is also provided at one end of the mold base plate 411;

[0102] Specifically, in this embodiment, positioning blocks 419 are provided at both ends of the mold base plate 411. The positioning blocks 419 can be used to position the mold base plate 411, ensuring the positioning requirements for repeated installation. Simultaneously, a handle 4110 is provided at one end of the mold base plate 411, allowing operators to easily pull and remove the mold base plate 411 for assembly and disassembly. It should be noted that this embodiment does not specifically limit the number of positioning blocks 419; as long as they are sufficient to position the mold base plate 411, that is sufficient.

[0103] like Figure 6 and Figure 7As shown, one end of the mold back plate 43 is provided with a limiting block 4111 corresponding to the positioning block 419 at the end away from the handle 4110;

[0104] The other end of the mold back plate 43 is provided with a positioning locking element 4112 corresponding to the positioning block 419 near the handle 4110;

[0105] Specifically, guide grooves are provided on both sides of the mold back plate 43 to provide a pulling channel for the mold plate, which can improve the efficiency of changing the mold plate. A limiting block 4111 is provided at one end of the mold back plate 43. The limiting block 4111 has a slot corresponding to the positioning block 419. After the mold base plate 411 is positioned, the positioning block 419 and the limiting block 4111 are exactly matched and locked. At the same time, the positioning locking member 4112 provided on the mold back plate 43 is used to lock the positioning block 419 located near the handle 4110 end to ensure the positioning requirements of repeated installation.

[0106] It should be noted that the positioning locking component 4112 described in this embodiment adopts a cam-type locking structure. The position of the cam is adjusted by rotating the handshake, and the cam presses against the positioning block 419 to limit the position of one side of the mold base plate 411. At the same time, it cooperates with the limiting block 4111 set at the other end to realize the positioning and locking installation of the mold base plate 411.

[0107] In some implementations, such as Figures 3 to 7 As shown, the locking mechanism 5 includes a locking unit 51 and a pull rod 52;

[0108] The locking unit 51 is installed on the mold back plate 43. The drive rod 52 releases or compresses the elastic element in the locking unit 51, causing the locking block 516 in the locking unit 51 to move, thereby locking or disengaging the molding assembly 41 and the mold back plate 43.

[0109] like Figure 10 As shown, the locking unit 51 includes a mounting block 511 disposed on the mold back plate 43. The mounting block 511 has a receiving cavity, and the elastic element is disposed in the receiving cavity through the fixing block 515. The pull rod 52 is disposed through the mounting block 511.

[0110] The elastic element includes a connecting post 512, one end of which is provided with an arc-shaped contact 513. An elastic compression member 514 is sleeved on the connecting post 512. One end of the elastic compression member 514 abuts against the contact 513, and the other end abuts against the fixing block 515. The connecting post 512 extends to the outside of the fixing block 515 and is fixedly connected to the locking block 516.

[0111] The pull rod 52 is provided with several grooves 53, the bottom end face of the grooves 53 is an inclined surface, the contact 513 abuts against the inclined surface, and drives the pull rod 52 to squeeze or release the contact 513.

[0112] Specifically, when the pull rod 52 is in the initial position and the contact 513 is at the deepest part of the groove 53, the pull rod 52 does not exert any pressure on the contact 513. At this time, the locking block 516 is in the retracted state, causing the molding assembly 41 and the mold back plate 43 to separate. When the pull rod 52 is pulled or rotated, the contact 513 moves along the direction of the groove 53 on the pull rod 52. Since the bottom end face of the groove 53 is an inclined surface, the outer surface of the pull rod 52 will continuously exert pressure on the contact 513 to make the contact 513 move. At the same time, under the action of the elastic compression member 514, the locking block 516 is lifted, causing the molding assembly 41 and the mold back plate 43 to lock together.

[0113] It should be noted that the elastic compression member 514 described in this embodiment is in the form of a spring 1313. The spring 1313 is sleeved on the connecting post 512, and the spring force of the spring 1313 itself is used to realize the action of the locking block 516.

[0114] This embodiment uses a locking mechanism 5 on the mold back plate 43. The locking unit 51 and the pull rod 52 on the locking mechanism 5 work together to quickly position the molding component 41. The locking mechanism 5 achieves the purpose of quickly locking the molding component 41. The estimated time is 1 minute. This solves the problem that traditional mold installation and locking requires multiple pressure plates and screws, and each adjustment requires removing screws and making multiple manual adjustments and re-locking, which is time-consuming and labor-intensive, with an estimated time of 45-90 minutes. Compared with traditional mold installation and locking, this embodiment greatly shortens the locking time and effectively improves the work efficiency of the staff.

[0115] In some implementations, such as Figures 1 to 7 As shown, the through hole 432 is connected to the air compressor equipment via the air compressor pipe 6 and to the vacuum equipment via the vacuum pipe 7; and / or, the through hole 432 is connected to the external atmospheric pressure;

[0116] The suction assembly is also equipped with a detection unit and an adjustment unit. The detection unit and the adjustment unit work together to control the flow rate and / or pressure inside the cavity 431 in order to complete the suction process and form a wet embryo.

[0117] Specifically, in this embodiment, the cavity 431 is connected to an external vacuum device via a vacuum pipe 7 and to an external air compressor via an air compressor pipe 6. Simultaneously, by utilizing a detection unit and an adjustment unit, the flow rate and / or pressure inside the cavity 431 are controlled. During the molding process of paper-plastic containers, this application can meet the requirements for wall thickness, strength, density, etc., of the product. When multiple cavities exist, it can meet the requirements for wall thickness, strength, density, etc., of a specified area. Compared to traditional paper-plastic equipment, when the pressure and flow rate fluctuate during the molding process, the flow rate and pressure can be detected and adjusted in real time, thereby ensuring product consistency, improving the product qualification rate of paper-plastic containers, and greatly satisfying market demand.

[0118] In some embodiments, vacuum line 7 and compressed air line 6 are provided with switching valves 8 for controlling the switching of the respective lines;

[0119] Vacuum pipeline 7 and / or compressed air pipeline 6 are equipped with regulating valves 9 for controlling the flow rate of the pipeline.

[0120] A switching valve 8 and a regulating valve 9 are installed on the same pipeline, and the switching valve 8 and the regulating valve 9 are connected in series.

[0121] The switching valve 8 and the regulating valve 9 are installed on the same pipeline. The switching valve 8 and the regulating valve 9 are connected in series, and the opening degree of the regulating valve 9 can be adjusted before or during the wet preform forming process.

[0122] In some embodiments, a pressure control valve 11 is provided on the cavity 431, the vacuum pipe 7, or the compressed air pipe 6 to regulate the pressure inside the cavity 431.

[0123] The cavity 431 is equipped with a pressure detection unit 12 for detecting the pressure inside the cavity.

[0124] Specifically, pressure control valves 11 are installed on the cavity 431, vacuum pipe 7, and compressed air pipe 6 to control the valve body opening and closing and the magnitude of the opening and closing, thereby controlling the internal pressure of the cavity 431. Alternatively, a pressure regulating pipe 10 can be connected to the cavity 431, vacuum pipe 7, or compressed air pipe 6, and a pressure control valve 11 can be installed on the pressure regulating pipe 10, which can also achieve control of the internal pressure of the cavity 431.

[0125] In this embodiment, the pressure regulating pipe 10 is integrated with the rotating shaft of the robotic arm, and the inside of the rotating shaft is hollow to serve as the pressure regulating pipe 10.

[0126] In this embodiment, a pressure detection unit 12 is provided on each cavity 431 to enable real-time monitoring of the internal pressure. The pressure detection value of the pressure detection unit 12 reflects the internal pressure of the cavity, so that the flow rate or pressure of each pipe can be adjusted according to the pressure detection value.

[0127] It should be noted that the pressure detection unit 12 described in this embodiment uses a pressure detection sensor, which utilizes the sensitivity of the pressure detection sensor to detect the pressure inside the cavity 431.

[0128] In some embodiments, in response to the suction assembly having multiple cavities 431, the gas or liquid inside the multiple cavities 431 is not interconnected.

[0129] Specifically, in order to ensure the molding of plant fibers, the gas or liquid inside the multiple cavities 431 is kept separate from each other. Each cavity 431 corresponds to a different part of the plant fiber molding. Each cavity 431 is independently controlled to better meet the requirements of wall thickness, strength and density of different areas of plant fiber molding.

[0130] This embodiment uses the upper cavity 431 and the lower cavity 431 as examples for explanation. The upper cavity 431 corresponds to the body and bottom of the paper-plastic container, and the lower cavity 431 corresponds to the neck and mouth of the paper-plastic container. The upper cavity 431 and the lower cavity 431 are respectively connected to external vacuum equipment through their own independent vacuum pipes 7 sets, so that a negative pressure environment is formed between the upper cavity 431 and the lower cavity 431 to realize the suction operation of the slurry. The upper cavity 431 and the lower cavity 431 are connected to external air pressure equipment through independent air pressure pipes 6 sets, so that a positive pressure environment is formed between the upper cavity 431 and the lower cavity 431 to realize the peeling operation of the molded product.

[0131] It should be noted that this embodiment adopts a method of independently controlling and detecting the upper and lower cavities 431. The lower cavity 431 is responsible for controlling the flow rate and pressure of peeling and slurry suction at the container opening (bottle mouth), while the upper cavity 431 is responsible for controlling the flow rate and pressure of peeling and slurry suction at the rest of the container (bottle body and bottle bottom).

[0132] In some implementations, such as Figure 14 and Figure 15As shown, the cold pressing assembly 13 is disposed in the second slurry tank of the slurry pool 1; the cold pressing assembly also includes a guide post 131, and an expansion body 134 is sleeved on the periphery of the guide post 131, and the guide post 131 is a supporting structure for the expansion body 134. The guide post is used to support the expansion body, so that the expansion body 134 has a certain stiffness, thereby ensuring that the expansion body 134 can smoothly enter or leave the product. Therefore, while increasing the diameter of the expansion body 134, the scraping of the expansion body 134 can be reduced. Because the expansion body 134 with an increased diameter is used for operation, the expansion ratio is reduced, which can improve the service life of the expansion body 134. The guide post 131 is provided with an airflow channel 132. The equipment for filling recyclable objects fills the expansion body 134 with recyclable objects through the airflow channel 132; the equipment for extracting recyclable objects extracts the recyclable objects from the expansion body 134 through the airflow channel 132, so that a negative pressure is formed in the airflow channel 132, and the expansion body 134 is stored in the airflow channel 132. The working process of the airbag: The air extraction device draws air into the airbag through the guide column 131. The diameter of the airbag is reduced to be smaller than the inner diameter of the container's opening. After the airbag is inserted into the container, the air extraction device is turned off, and the inflation device injects air into the airbag through the guide. The outer wall of the inflated airbag abuts against the inner wall of the preformed wet blank. The airbag can adapt to and fit the inner wall of the preformed wet blank, preventing the product's sidewalls from collapsing and wrinkling, and expelling excess moisture from the preformed wet blank, thereby increasing the density and strength of the wet blank and reducing the heating energy consumption of the next process.

[0133] The guide post 131 is provided with a guide hole 133 (optional), and the side wall of the guide post 131 is provided with an airflow channel 132 (the guide hole 133 and the airflow channel 132 can also be the same component). The airflow channel 132 can be a through groove. The inflation device and the de-inflation device are connected to the inside of the airbag in sequence through the air pipe, the guide hole 133 and the airflow channel 132 (the inflation device and the de-inflation device can be directly connected to the inside of the airbag through the air pipe and the airflow channel 132). The inner edge of the airbag's port is fixedly connected to the outer periphery of the guide post 131. Any connection method between the airbag and the guide post 131 is acceptable, as long as the airbag is fitted over the outside of the guide post 131.

[0134] The airflow channel 132 is used to house the airbag. The airbag is made of an inflatable material. When the air extraction device draws air into the airbag, the airbag contracts into the airflow channel 132, which can reduce the diameter of the airbag surrounding the guide post 131. This allows for the selection of the largest diameter airbag in its natural state, given a fixed inner diameter of the product opening, thereby reducing the airbag expansion ratio and improving the service life of the airbag.

[0135] In some implementations, such as Figures 11 to 13 As shown, a rectifier box 135 and a base 138 disposed at the bottom of the rectifier box 135;

[0136] The interior of the rectifier box 135 is a hollow cavity 431. The filling end of each expansion body 134 is connected to the hollow cavity 431 of the rectifier box 135. An air inlet and an air outlet are respectively provided on the hollow cavity 431. The air inlet is connected to a device for filling recyclable objects, and the air outlet is connected to a vacuum device or air vent. The device for filling recyclable objects causes the expansion body 134 to expand, thereby compressing the inner wall of the preformed wet blank.

[0137] A limiting structure 139 is installed on the upper end of the base 138, and the rectifier box 135 is detachably connected to the base 138 via a quick-locking structure. The limiting structure 139 is used to limit the left and right relative positions of the base 138 and the rectifier box 135 (here, left and right direction refers to...). Figure 13 (shown in the front-to-back direction), several expansion bodies 134 are evenly distributed on the rectifier box 135, and the expansion bodies 134 are used to squeeze the inner wall of the product to be processed.

[0138] The recyclable material is preferably a gas, and the expander 134 is preferably an airbag.

[0139] Specifically, a number of guide pillars 131 are evenly distributed on the rectifier box 135. The inlet end of each guide pillar 131 is located inside the rectifier box 135 (or the airbag can be directly connected to the rectifier box 135 without a guide pillar 131). The rectifier box 135 is provided with an air inlet and an air outlet. The air inlet is connected to an inflation device, and the air outlet is connected to a vacuum device or to the air (external atmospheric pressure). The multiple sets of guide pillars 131 on the rectifier box 135 are used to improve production efficiency. The rectifier box 135 is a flow-dividing structure of multiple guide pillars 131 (or multiple airbags). The air inlet on the rectifier box 135 is connected to an inflation device, and the air outlet on the rectifier box 135 is connected to a vacuum device or to the air (external atmospheric pressure) to ensure that multiple airbags can simultaneously inhale or exhale.

[0140] In some implementations, such as Figure 14 and Figure 15 As shown, a one-way speed control valve 137 is installed at the filling end of the expansion body 134. The one-way speed control valve 137 is used to control the filling speed of the recyclable object into the expansion body 134.

[0141] Specifically, a one-way speed control valve 137 is installed at the feed end of each guide post 131. The one-way speed control valve 137 is used to control the airflow rate of each guide post 131. If an airbag ruptures and leaks air during production, and there is no explosion-proof structure, it will cause insufficient air pressure in the remaining intact airbags, resulting in problems with the quality of the extruded products. By setting the one-way speed control valve 137 as an explosion-proof structure for the airbags, when an airbag ruptures, the airflow through the ruptured point is much lower than the total airflow, thus not causing excessive impact on other airbags, thereby ensuring that the remaining products can be produced normally.

[0142] The one-way speed control valve 137 is used to adjust the airflow rate of a single airbag, so that the pressurized gas medium in the rectifier box 135 can flow evenly into each airbag, while the one-way speed control valve 137 does not affect the airflow of the airbag.

[0143] The cold pressing device for paper-plastic container products also includes a base 138. A limiting structure 139 and a quick-locking structure are respectively provided on the upper end of the base 138. The limiting structure 139 is used to limit the relative position of the rectifier box 135 and the base 138. The quick-locking structure is used to fix the relative position of the base 138 and the rectifier box 135, so as to facilitate the quick installation and removal of the rectifier box 135 by the staff, facilitate the positioning of the rectifier box 135, have high installation accuracy, and facilitate maintenance.

[0144] The limiting structure 139 includes two baffles 1310, which are arranged parallel to each other. The rectifier box 135 is located between the two baffles 1310. Each baffle 1310 is detachably connected to the upper end of the base 138, and one side of each baffle 1310 abuts against the outer wall of the rectifier box 135. The gap between the two baffles 1310 is used to limit the relative position of the rectifier box 135 on the base 138. When the rectifier box 135 is inserted, the two baffles 1310 can act as a guide, allowing it to smoothly enter the preset position. The gap between the two baffles 1310 can be adjusted to accommodate different rectifier box 135 specifications.

[0145] The outer wall of the rectifier box 135 is provided with a limiting groove 136. One end of the stop block 1311 is located in the limiting groove 136, and the other end of the stop block 1311 is provided with a threaded hole. An adjusting bolt is installed in the threaded hole. One end of the adjusting bolt abuts against the base 138 to adjust the front and rear relative position of the rectifier box 135 with respect to the base 138. The stop block 1311 and the baffle 1310 are set perpendicular to each other. The middle part of the stop block 1311 is provided with a through hole 416. One end of the fixing bolt passes through the through hole 416 and is fixedly connected to the base 138. The two stop blocks 1311 and the baffle 1310 respectively define the four sides of the rectifier box 135, which facilitates the positioning of the rectifier box 135.

[0146] Compared to the positioning structure of the rectifier box 135 when using the limiting structure 139, the quick-lock structure is used to quickly lock the relative position of the rectifier box 135 and the base 138. The quick-lock structure includes a front top and a rear top. The front top includes a top pin 1312 and a spring 1313 disposed around it. The two ends of the spring 1313 are respectively fixedly connected to the periphery of the top pin 1312 and the upper end of the base 138. One end of the top pin 1312 abuts against the front side of the rectifier box 135. The rear top includes a buckle 1314, and the upper end of the base 138 is provided with a buckle. One end of 1314 is snapped into the slot, and the other end of 1314 is fixedly connected to the outer wall of the rectifier box 135. The spring 1313 and the top pin 1312 are the clamping structures of the rectifier box 135. The rectifier box 135 is always subjected to the lateral clamping force of the top pin 1312 due to the elasticity of the spring 1313, so that one end of the snap-fit ​​1314 is snapped into the slot. When it is necessary to disassemble the rectifier box 135, the operator presses the spring 1313 and pulls the rectifier box 135 at the end of the snap-fit ​​1314 upward, so that the rectifier box 135 can be removed as a whole.

[0147] In some embodiments, a cleaning unit and a drying unit are provided on the inner wall of the second slurry tank and / or on the outside of the slurry suction assembly;

[0148] The cleaning unit includes a spray nozzle, which is connected to a water source through a water supply pipeline. The spray nozzle sprays a mist to clean the periphery of the suction assembly and / or the inner wall of the molding cavity.

[0149] The air drying unit includes an air blowing nozzle, which is connected to compressed air through an air blowing pipe. The air blowing nozzle blows air to dry the periphery of the suction assembly and / or the inner wall of the molding cavity.

[0150] Specifically, in this embodiment, the slurry pool is divided into two slurry tanks, meaning the slurry suction process and the cold pressing process are operated in two separate stations, achieving dry and wet separation. Simultaneously, the molding cavity undergoes external cleaning and drying before entering the cold pressing process. (It should be noted that in this embodiment, to complete the cleaning and drying work, air compressor pipes and high-pressure water pipes are installed around the cold pressing station. Water mist is sprayed from these pipes to clean the slurry suction components and then dry them. The drying process uses existing, mature blower nozzles connected to compressed air to remove residual slurry from the outside of the cavity.) This prevents excess slurry from splashing and contaminating subsequent stations. Separating the slurry pool from the cold pressing process prevents liquid from mixing into the slurry pool when cleaning the mold or the cavity exterior, thus reducing the slurry concentration and affecting product quality. After cold pressing, the airbags will inevitably retain some fibers. When the cold pressing process is completed, the airbags are also cleaned to prevent them from affecting product quality in subsequent operations.

[0151] After all processes are completed, the inner mold can be cleaned after each or multiple cycles. Since some pulp fibers remain in the inner mold during the pulp suction process, failure to clean it can lead to quality problems in subsequent products. After completing a specified cycle, the forming cavity is transferred to the cold pressing station, opened to a specified angle, and then lowered. In this embodiment, spray heads installed on one of the two side walls of the pulp tank can be driven to a specified position by a transmission mechanism (it should be noted that the transmission mechanism described in this embodiment is a hydraulic rod driving a transmission rod, thereby moving the spray head; this transmission method is a conventional technique well-known to those skilled in the art, and this transmission mechanism is not considered an inventive point of this embodiment, therefore, it will not be described in detail) to begin spraying water mist for cleaning. The pulp suction component moves up and down to ensure cleaning of all areas. After cleaning is completed, the forming cavity rises and returns to its initial position, and the mold closes.

[0152] Meanwhile, due to the characteristics of slurry, a large amount of fiber remains on the surface or bottom of the slurry tank after product processing is completed and the slurry is discharged, requiring manual cleaning. This invention utilizes a cleaning unit installed on the inner wall of the slurry tank. When the slurry is discharged, depending on the actual liquid level, when the liquid level is below a certain height (assuming 1 / 3 of the slurry tank height), liquid will flow from the top of the slurry tank along the side wall, assisting in cleaning the inner wall of the slurry tank. Simultaneously, it dilutes the density of the slurry in the tank, allowing for better fiber discharge, reducing labor intensity, and improving work efficiency.

[0153] Secondly, based on the same concept, embodiments of this application also provide a process for processing wet-mold plant fiber container preforms, including:

[0154] Forming cavity 421 for forming wet preform of plant fiber container;

[0155] Molding cavity 421 enters the slurry;

[0156] The opening of the molding cavity 421 faces downwards;

[0157] The slurry enters the molding chamber through the opening of the molding chamber 421. The air in the molding chamber is discharged from the top of the molding chamber by connecting to the external atmospheric pressure or by vacuuming. By vacuuming, the liquid in the slurry is discharged through the filter structure in the molding chamber 421. The remaining plant fibers are attached to the filter structure, thus completing the slurry absorption.

[0158] Preferably, when the molding cavity 421 enters the slurry pool, because the liquid density is greater than the air density, the air moves to the upper part of the cavity and is discharged through the outlet connected to the external atmospheric pressure. This method can fill the cavity with slurry, and then the vacuum method is used to start sucking the slurry, and the plant fibers are attached to the filter structure.

[0159] Alternatively, when the forming cavity 421 enters the slurry pool, because the liquid density is greater than the air density, the air moves to the upper part of the cavity and is discharged through the connected vacuum device. This method can fill the cavity with slurry, and then the vacuum method is used to start sucking the slurry, and the plant fibers are attached to the filter structure.

[0160] The forming cavity 421 is separated from the slurry surface, and the excess water of the plant fibers attached to the filter structure is discharged by vacuuming to dehydrate and form a pre-formed wet embryo.

[0161] The expander 134 enters the molding cavity 421 through the cavity opening and squeezes the inner wall of the pre-formed wet blank to complete the cold pressing.

[0162] Specifically, in this embodiment, the wet embryo processing technology for plant fiber containers includes a pulp suction process and a cold pressing process.

[0163] In the slurry suction process, a vertical slurry suction method is adopted to help the wet preform be formed evenly and avoid slurry pooling. Since the opening of the forming cavity 421 in this embodiment is set downward, the opening of the forming cavity 421 is finally separated from the liquid surface of the slurry pool, which increases the slurry suction time at the closing point of the container product, thereby increasing the fiber layer thickness at the closing point of the container product. This effectively solves the problem of thin and uneven thickness at the closing point and ensures that the wall thickness of the plant fiber container product is uniform. In the cold pressing process, the expansion body 134 expands and squeezes the inner wall of the preformed wet preform in the forming cavity 421 to expel free water and obtain the formed wet preform. This increases the structural strength of the formed wet preform, improves the production quality and product qualification rate of the plant fiber container wet preform, and greatly meets market demand.

[0164] In this embodiment, to ensure that the opening of the molding cavity 421 is finally removed from the surface of the slurry pool, the opening of the molding cavity 421 is set downwards. The following explanation is provided:

[0165] First, the opening of the forming cavity 421 can be set downwards before entering the slurry pool.

[0166] Secondly, after the suction action is completed and the slurry is removed from the slurry pool, the suction assembly can be flipped by a robotic arm so that the cavity opening is facing downwards in the current state.

[0167] Third, during the slurry suction operation, that is, after entering the slurry pool, the robotic arm can be controlled to flip the slurry suction assembly so that the cavity opening is set downwards in the current state.

[0168] The purpose of the methods described above is to ensure that the opening of the molding cavity faces downwards, so that when the molding cavity is removed from the liquid surface, excess slurry is discharged from the opening of the molding cavity, thereby ensuring that the wall thickness of the container product is uniform.

[0169] In some embodiments, the suction assembly includes a plurality of molding mold components 4, which cooperate to form a molding cavity 421. The molding mold components 4 are connected to the robotic arm 31 of the transfer mechanism 3, and the robotic arm 31 controls the opening and closing actions of the molding mold components 4.

[0170] The molding die component 4 includes a molding assembly 41, a front mold 42, and a mold back plate 43;

[0171] The front mold 42 is mounted on the molding component 41, and the molding component 41 is detachably connected to the mold back plate 43.

[0172] The front mold 42 is provided with a molding cavity 421, and the mold back plate 43 is provided with one or more cavities 431. The cavity 431 is connected to the molding cavity 421. Each cavity 431 is provided with one or more through holes 432. The through holes 432 are connected to external equipment through connecting pipes.

[0173] The suction assembly has multiple cavities 431, and the gas or liquid inside the multiple cavities 431 is not interconnected.

[0174] The through hole 432 is connected to the air compressor equipment via the air compressor pipe 6 and to the vacuum equipment via the vacuum pipe 7; and / or, the through hole 432 is connected to the external atmospheric pressure.

[0175] Specifically, to ensure the complete molding of the paper-plastic product, if the molding cavity 421 is not connected to the external atmospheric pressure, there will be gas inside the cavity. The gas cannot be discharged, and the liquid cannot fill the entire cavity, so the paper-plastic product cannot be completely molded. In this embodiment, the molding cavity 421 or cavity 431 needs to be connected to the external atmospheric pressure in order to discharge the gas inside the molding cavity and control the negative pressure inside the cavity; or by opening a vacuum at the top of the molding cavity 421 or cavity 431, the slurry can be sucked in and / or the air can be vented, which can also realize the molding of the paper-plastic product.

[0176] Vacuum pipeline 7 and compressed air pipeline 6 are equipped with switch valves 8 for controlling the switching of the pipelines.

[0177] Vacuum pipeline 7 and / or compressed air pipeline 6 are equipped with regulating valves 9 for controlling the flow rate of the pipeline.

[0178] In response, a switching valve 8 and a regulating valve 9 are installed on the same pipeline, and the switching valve 8 and the regulating valve 9 are connected in series.

[0179] The transplanting mechanism 3 drives the slurry suction assembly to move to the slurry suction station and vertically penetrates below the slurry surface. The slurry enters the forming cavity 421 through the cavity opening.

[0180] The transplanting mechanism 3 drives the slurry suction component to move to the slurry suction station and vertically penetrates below the slurry surface in the first slurry tank 101; the slurry suction component is controlled to execute a preset slurry suction control strategy so that the slurry suction component completes vacuum suction of the slurry and the plant fibers are adsorbed onto the filter structure of the front mold.

[0181] After the slurry is sucked up, the slurry suction component is driven to rise above the slurry surface in the first slurry tank 101. The slurry suction component is controlled to execute a preset slurry suction control strategy to suck up and absorb excess water from the plant fibers on the filter structure, so as to dehydrate and form a pre-formed wet embryo. The slurry suction control strategy is used to control the slurry suction component to complete the slurry suction and dehydration operations.

[0182] The transplanting mechanism 3 drives the suction assembly to move laterally to the cold pressing station. After reaching the predetermined position, the suction assembly descends, and the expansion body 134 extends into the molding cavity 421 along the cavity opening. The expansion body 134 expands to squeeze the inner wall of the pre-formed wet blank in the molding cavity 421, expelling free water to form a wet blank.

[0183] During the slurry suction process, the slurry suction assembly is moved to the slurry suction station by controlling the transplanting mechanism 3. In this embodiment, the slurry suction station is located directly above the first slurry tank 101, extending vertically below the slurry surface in the first slurry tank 101. The slurry suction assembly is controlled to execute the slurry suction control strategy to vacuum-suction the slurry. The slurry is drawn along the cavity opening into the molding cavity 421, thereby completing the slurry suction work. After the slurry vacuum suction operation is completed so that the plant fibers are adsorbed onto the filter structure of the molding cavity 421, the transplanting mechanism 3 drives the slurry suction assembly to rise vertically above the slurry surface in the first slurry tank 101. The slurry suction assembly is controlled to execute the slurry suction control strategy to suction the water in the slurry suction assembly, forming a molded wet embryo, which then enters the cold pressing process.

[0184] During the cold pressing process, the slurry suction assembly is driven to move laterally to the cold pressing station by the transfer mechanism 3. In this embodiment, the cold pressing station is located directly above the second slurry tank 102. The slurry suction assembly is controlled to descend and vertically penetrate into the second slurry tank 102. The expansion body 134 set in the second slurry tank 102 extends into the molding cavity 421 along the cavity opening. After the expansion body 134 accurately enters the molding cavity 421 and is in place, the external inflation and deflation equipment controls the expansion body 134 to expand, squeezing the inner wall of the pre-formed wet blank in the molding cavity 421, expelling free water, and obtaining the wet blank.

[0185] The plant fiber container wet preform processing technology described in this embodiment controls the flow rate and pressure of the slurry within cavity 431 by implementing a slurry control strategy during the slurry suction process, thereby achieving the molding operation of the plant fiber container. This embodiment can meet the requirements for wall thickness, strength, and density of the product. When multiple cavities exist, it can meet the requirements for wall thickness, strength, and density of a specified area. Compared with traditional paper-plastic equipment, when the pressure and flow rate fluctuate during the molding process, the flow rate and pressure can be detected and adjusted in real time to ensure product consistency. By using the expander 134 to expand and squeeze the inner wall of the plant fiber container in the molding cavity 421 during the cold pressing process, free water is discharged, resulting in a plant fiber container wet preform. This increases the structural strength of the molded wet preform, improves the production quality and product qualification rate of the plant fiber container wet preform, and greatly meets market demand.

[0186] In some embodiments, the pulp suction control strategy includes:

[0187] In response to the slurry absorption state of the plant fiber, the control switch valve 8 is opened, and the control regulating valve 9 is opened to the first valve opening degree to vacuum draw the slurry and complete the slurry absorption operation.

[0188] In response to the dehydration or transfer state of the pre-formed wet embryo, the switch valve 8 is kept open and the regulating valve 9 is adjusted from the first valve opening to the second valve opening to draw and adsorb excess water from the plant fibers on the filter structure to dehydrate and form a pre-formed wet embryo. The second valve opening is not less than the first valve opening.

[0189] In response to the stripping of wet blanks or the non-working state, the control switch valve 8 is closed and the regulating valve 9 is restored to the first valve opening, waiting for the next suction command; wherein, the transition state and the stripping of wet blanks state are the states of the next process after the completion of the cold pressing process.

[0190] It should be noted that the switching valve 8 used in this application is used to control the on / off state of the flow path, and the regulating valve 9 is used to control the flow rate of the flow path. Valves that can realize the function of the switching valve 8 include, but are not limited to, angle valves, ball valves, butterfly valves, etc. The preferred solution in this embodiment is to use angle valve control. The regulating valve 9 used in this embodiment is a stop valve, throttle valve, etc. The preferred solution in this embodiment is to use stop valve control. The stop valve slowly controls the flow rate adjustment, while the angle valve quickly responds to the flow switching. A small flow rate is required when sucking slurry, and a large flow rate is required when dewatering. The change in flow rate is a requirement for molding. Therefore, this embodiment uses angle valve and stop valve to achieve this.

[0191] The angle valve and the shut-off valve can be automatically adjusted in real time by means of electric control or pneumatic control. This embodiment does not specifically limit the use of electric control or pneumatic control, that is, it is sufficient to complete the slurry suction, dewatering and stripping process of the container product. Those skilled in the art can select the specific control method according to the actual site conditions. For the specific control means of each valve, please refer to the control method below, which will not be repeated here.

[0192] Furthermore, since the flow rates required for the slurry suction and dewatering processes are different, the flow rates need to be adjusted in real time. This application adopts a method of setting up a switch valve 8 and a regulating valve 9 together. By controlling the switch valve 8 and the regulating valve 9, the slurry suction flow rate and the dewatering flow rate are controlled to meet the molding requirements of paper-plastic containers in the slurry suction and dewatering processes.

[0193] This application uses a shut-off valve and an angle valve for control. The shut-off valve is used to control the switching quantity. Since the shut-off valve or other flow control valves have a slow adjustment speed and cannot meet the instantaneous switching requirements, an angle valve is added for control. That is, when the shut-off valve is adjusted to the suction state, the angle valve opens when suction begins. When entering the dewatering state, the shut-off valve normally adjusts to control the flow rate. When entering the stripping state or non-working state, the angle valve closes and the shut-off valve is adjusted to the suction state.

[0194] In some implementations, it also includes:

[0195] In response to the stripping of the wet preform, control valve 8 is opened;

[0196] In response to a non-operating state, control switch valve 8 is closed;

[0197] or;

[0198] The compressed air pipeline 6 is equipped with a switch valve 8 and a regulating valve 9;

[0199] In response to the stripping of the wet preform, the control switch valve 8 is opened and the regulating valve 9 is in the regulating control state;

[0200] In response to a non-operating state, control switch valve 8 is closed.

[0201] Specifically, in response to the stripped wet embryo state and the non-working state, this embodiment controls the entry and exit of external gas into the cavity 431 by controlling the opening or closing of the switch valve 8 provided on the air compressor pipeline 6.

[0202] or;

[0203] The compressed air pipeline 6 is equipped with a switch valve 8 and a regulating valve 9;

[0204] In response to the stripping of the wet preform, the control switch valve 8 is opened, and the regulating valve 9 is in the regulating control state to regulate the flow rate and / or pressure.

[0205] In response to a non-operating state, control switch valve 8 is closed.

[0206] Specifically, in response to the stripping of the wet preform, this embodiment controls the opening or closing of the switch valve 8 provided on the air compressor pipeline 6, and at the same time adjusts the opening of the regulating valve 9 to regulate the flow rate and / or pressure.

[0207] By controlling the opening and closing of the switching valve 8 and regulating valve 9 through a control method, the flow rate and pressure of the slurry in the cavity 431 are controlled. When molding paper-plastic container products, this application can meet the requirements of wall thickness, strength, density, etc. of the product. When it exists in multiple cavities, it can meet the requirements of wall thickness, strength, density, etc. of a specified area. Compared with traditional paper-plastic equipment, when the pressure and flow rate fluctuate during the molding process, the flow rate and pressure during the molding process can be detected and adjusted in real time, thereby ensuring the consistency of the product, improving the product qualification rate of paper-plastic containers, and greatly meeting market demand.

[0208] In some embodiments, the expansion body 134 is sleeved around the guide post, and the guide post is a supporting structure for the expansion body 134. The guide post is provided with an airflow channel. The device for filling recyclable objects fills the expansion body 134 with recyclable objects through the airflow channel, and the device for extracting recyclable objects extracts the recyclable objects from the expansion body 134 through the airflow channel, so that a negative pressure is formed in the airflow channel, and the expansion body 134 is housed in the airflow channel.

[0209] In response to the cold pressing state of the preformed wet blank, the expansion body 134 enters the molding cavity, the vacuum equipment (equipment for extracting recyclable objects) is turned off, and the external inflation equipment (equipment for extracting recyclable objects) inflates (fills) the expansion body 134, causing the expansion body 134 to expand so that the outer wall of the expansion body 134 abuts against the inner wall of the preformed wet blank and squeezes it.

[0210] After the expansion body 134 completes the extrusion process, the equipment for filling recyclable objects is turned off, and the vacuum equipment is turned on. The expansion body 134 shrinks into the airflow channel and detaches from the wet blank. The vacuum equipment is then turned off, and the transfer mechanism 3 drives the suction component to rise.

[0211] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plant fiber container wet embryo processing device, characterized in that, The processing equipment includes: Slurry tank (1), frame assembly (2), transplanting mechanism (3), slurry suction assembly and cold pressing assembly (13); The transplanting mechanism (3) is mounted on the frame assembly (2); The suction assembly has a built-in forming cavity (421); The slurry suction component moves relative to the liquid surface of the first slurry tank (101) of the slurry pool (1) through the transplanting mechanism (3). The slurry suction component penetrates into the liquid surface of the first slurry tank (101). The slurry in the first slurry tank (101) enters the molding cavity (421) through the cavity opening to perform slurry suction. After the slurry suction is completed, the cavity opening of the molding cavity (421) faces downward and the slurry suction component moves away from the liquid surface of the first slurry tank (101), thus completing the wet preforming work of the plant fiber container. The cold pressing assembly (13) includes an expansion body (134) that can enter the molding cavity (421) through the cavity opening. The expansion body (134) is filled with recyclable material to expand and squeeze the inner wall of the preformed wet embryo in the molding cavity (421) to form a plant fiber container wet embryo. An external atmospheric pressure or vacuum device is connected to the top of the cavity to remove excess air from inside the cavity; at the same time, the size of the opening of the pipe connected to the external atmospheric pressure is controlled to adjust the negative pressure inside the cavity and control the wall thickness of the product molding. The suction assembly includes several molding mold components (4), which cooperate to form a molding cavity (421). The molding mold components (4) are connected to the robotic arm (31) of the transfer mechanism (3), and the robotic arm (31) controls the opening and closing actions of the molding mold components (4). The molding die component (4) includes a molding assembly (41), a front mold (42), and a mold back plate (43); The front mold (42) is mounted on the molding assembly (41). The molding assembly (41) is detachably connected to the mold back plate (43). The mold back plate (43) is provided with a locking mechanism (5) to lock and fix the molding assembly (41) and the mold back plate (43). The molding assembly (41) includes a mold base plate (411) and a mold pad plate (412). The mold base plate (411) is provided with at least one flow area, and a first flow through hole (413) is provided in the flow area. The mold pad plate (412) is detachably connected to the mold base plate (411) and is arranged corresponding to the flow area. The mold pad plate (412) is provided with a second flow through hole (414) that can communicate with the first flow through hole (413). Both the first flow passage (413) and the second flow passage (414) include a plurality of third flow passages arranged along the first direction, with a first gap reserved between adjacent third flow passages; and; Multiple fourth flow through holes are provided along the second direction, and a second gap is reserved between adjacent fourth flow through holes; The fourth flow through hole is located below the third flow through hole; The front mold (42) is provided with a molding cavity (421), and the mold back plate (43) is provided with one or more cavities (431). The cavity (431) is connected to the molding cavity (421). Each cavity (431) is provided with one or more through holes (432). The through holes (432) are connected to external equipment through connecting pipes. The suction assembly has multiple cavities (431) inside, and the gas or liquid inside the multiple cavities (431) is not interconnected.

2. The plant fiber container wet embryo processing equipment according to claim 1, characterized in that: The through hole (432) is connected to the air compressor equipment via the air compressor pipe (6) and to the vacuum equipment via the vacuum pipe (7); and / or, the through hole (432) is connected to the external atmospheric pressure; The suction assembly is also equipped with a detection unit and an adjustment unit. The detection unit and the adjustment unit work together to control the flow rate and / or pressure inside the cavity (431) in order to complete the suction process and form a preformed wet blank.

3. The plant fiber container wet embryo processing equipment according to claim 2, characterized in that: Vacuum pipe (7) and compressed air pipe (6) are equipped with switch valves (8) for controlling the switching of the pipes. Vacuum pipes (7) and / or compressed air pipes (6) are equipped with regulating valves (9) for controlling the flow rate of the pipes. In response to the fact that a switch valve (8) and a regulating valve (9) are installed on the same pipeline, the switch valve (8) and the regulating valve (9) are connected in series; A pressure control valve (11) is provided on the cavity (431), vacuum pipe (7) or compressed air pipe (6) to regulate the pressure inside the cavity (431); The cavity (431) is provided with a pressure detection unit (12) for detecting the pressure inside the cavity.

4. The plant fiber container wet embryo processing equipment according to claim 1, characterized in that: The cold pressing assembly (13) is installed in the second slurry tank of the slurry pool (1); The cold pressing assembly also includes a guide post (131), an expansion body (134) is sleeved on the periphery of the guide post (131), and the guide post (131) is a supporting structure for the expansion body (134). An airflow channel (132) is provided on the guide post (131). The device for filling recyclable objects fills the expansion body (134) with recyclable objects through the airflow channel (132), and the device for extracting recyclable objects extracts the recyclable objects from the expansion body (134) through the airflow channel (132), so that a negative pressure is formed in the airflow channel (132), and the expansion body (134) is housed in the airflow channel (132).

5. The plant fiber container wet embryo processing equipment according to claim 4, characterized in that, Also includes: The rectifier box (135) and the base (138) disposed at the bottom of the rectifier box (135); The interior of the rectifier box (135) is a hollow chamber. The filling end of each expansion body (134) is connected to the hollow chamber of the rectifier box (135). An air inlet and an air outlet are respectively provided on the hollow chamber. The air inlet is connected to the device for filling recyclable objects, and the air outlet is connected to the vacuum device or the air outlet. The device for filling recyclable objects causes the expansion body (134) to expand, thereby squeezing the inner wall of the preformed wet blank. A limiting structure (139) is installed on the upper end of the base (138), and the rectifier box (135) is detachably connected to the base (138) through a quick-locking structure. The limiting structure (139) is used to limit the left and right relative positions of the base (138) and the rectifier box (135). Several expansion bodies (134) are evenly distributed on the rectifier box (135). The expansion bodies (134) are used to extrude the inner wall of the preformed wet blank. The recyclable object is a gas, and the inflatable body (134) is an airbag; One-way speed control valves (137) are installed at the filling end of the expansion body (134). The one-way speed control valves (137) are used to control the filling speed of the recyclable object into the expansion body (134).

6. The plant fiber container wet embryo processing equipment according to claim 1, characterized in that: The inner wall of the second slurry tank and / or the exterior of the slurry suction assembly are equipped with a cleaning unit and a drying unit; The cleaning unit includes a spray nozzle, which is connected to a water source through a water supply pipeline. The spray nozzle sprays a mist to clean the periphery of the suction assembly and / or the inner wall of the molding cavity. The air drying unit includes an air blowing nozzle, which is connected to compressed air through an air blowing pipe. The air blowing nozzle blows air to dry the periphery of the suction assembly and / or the inner wall of the molding cavity.

7. A process for processing wet preforms of plant fiber containers, based on the plant fiber container wet preform processing equipment as described in any one of claims 1-6, characterized in that: Including a molding cavity for forming a wet embryo of a plant fiber container; The molding cavity enters the slurry; The cavity opening faces downwards; The slurry enters the molding cavity through the cavity opening. The air inside the molding cavity is discharged from the top of the molding cavity by connecting to the external atmospheric pressure or by vacuuming. By vacuuming, the liquid in the slurry is discharged through the filter structure in the molding cavity. The remaining plant fibers adhere to the filter structure, completing the slurry absorption. The molding cavity is separated from the slurry surface, and excess water adhering to the plant fibers on the filter structure is discharged by vacuuming to dehydrate and form a pre-molded wet embryo. An expandable expansion body enters the molding cavity through the cavity opening and squeezes the inner wall of the pre-formed wet blank to complete the cold pressing; An external atmospheric pressure or vacuum device is connected to the top of the cavity to remove excess air from inside the cavity; at the same time, the size of the opening of the pipe connected to the external atmospheric pressure is controlled to adjust the negative pressure inside the cavity and control the wall thickness of the product molding. When the molding cavity enters the slurry pool, because the density of the liquid is greater than that of the air, the air moves to the upper part of the cavity and is discharged through the outlet connected to the external atmospheric pressure. This method can fill the cavity with slurry. Then, the vacuum method is used to start sucking the slurry, and the plant fibers are attached to the filter structure.

8. The wet pre-processing technology for plant fiber container according to claim 7, characterized in that, include: The suction assembly includes several molding mold components, which cooperate to form a molding cavity. The molding mold components are connected to the transfer mechanism, and the transfer mechanism controls the opening and closing actions of the molding mold components. The molding die components include molding components, front die, and die back plate; The front mold is mounted on the molding assembly, and the molding assembly is detachably connected to the mold back plate; The front mold has a forming cavity, and the mold back plate has one or more cavities that are connected to the forming cavity. Each cavity has one or more through holes that are connected to external equipment through connecting pipes. The suction assembly has multiple cavities, and the gas or liquid inside the multiple cavities is not interconnected. The through-hole is connected to an air compressor through an air compressor pipe and to a vacuum pipe through a vacuum pipe; and / or, the through-hole is connected to external atmospheric pressure. Vacuum pipelines and compressed air pipelines are equipped with switch valves for controlling the switching of the pipelines. Vacuum pipelines and / or compressed air pipelines are equipped with regulating valves to control the flow rate in the pipeline. In response to the presence of a switch valve and a regulating valve on the same pipeline, the switch valve and the regulating valve are connected in series; The transplanting mechanism drives the slurry suction assembly to move to the slurry suction station, and the forming cavity extends below the slurry surface. The slurry enters the forming cavity through the cavity opening. The suction component is controlled to execute a preset suction control strategy so that the suction component completes vacuum suction of the slurry and the plant fibers are adsorbed onto the filter structure of the front mold. After the slurry is absorbed, the slurry absorption component is driven to rise above the slurry surface and controlled to execute a preset slurry absorption control strategy to absorb excess water from the plant fibers on the filter structure, thereby completing dehydration and forming a pre-formed wet embryo. The slurry absorption control strategy is used to control the slurry absorption component to complete the slurry absorption and dehydration operations. The transplanting mechanism drives the suction assembly to move laterally to the cold pressing station. After reaching the predetermined position, the suction assembly descends, and the expander extends into the molding cavity along the cavity opening. The expander expands to squeeze the inner wall of the pre-formed wet blank in the molding cavity, expelling free water to form a wet blank.

9. The wet embryo processing technology for plant fiber containers according to claim 8, characterized in that, The pulp suction control strategy includes: In response to the slurry absorption state of the plant fiber, the control switch valve is opened, and the regulating valve is opened to the first valve opening degree to vacuum draw up the slurry and complete the slurry absorption operation. In response to the dehydration or transfer state of the pre-formed wet embryo, the switch valve continues to be opened, and the regulating valve is adjusted from the opening of the first valve port to the opening of the second valve port to draw and adsorb the excess water of the plant fiber on the filter structure, complete the dehydration and form the pre-formed wet embryo, wherein the opening of the second valve port is not less than the opening of the first valve port. In response to the stripping of wet blanks or the non-working state, the control switch valve is closed and the regulating valve is restored to the first valve opening, waiting for the next suction command; wherein, the transition state and the stripping of wet blanks state are the states of the next process after the completion of the cold pressing process.

10. The wet embryo processing technology for plant fiber containers according to claim 9, characterized in that, Also includes: In response to the state of the stripped wet preform, the control valve opens; In response to a non-operating state, the control valve is closed; or; The compressed air pipeline is equipped with on / off valves and regulating valves; In response to the stripping of the wet preform, the control switch valve opens, and the regulating valve is in the regulating control state; In response to a non-operating state, the control valve is closed.

11. The wet embryo processing technology for plant fiber containers according to claim 8, characterized in that: The expansion body is sleeved around the guide post, and the guide post is the supporting structure of the expansion body. The guide post is provided with an airflow channel. The device for filling recyclable objects fills the expansion body with recyclable objects through the airflow channel, and the device for extracting recyclable objects extracts the recyclable objects through the airflow channel, so that a negative pressure is formed in the airflow channel, and the expansion body is stored in the airflow channel. In response to the cold pressing state of the preformed wet blank, the expanded body enters the molding cavity, the device for extracting recyclable objects is turned off, and the device for filling recyclable objects externally fills the interior of the expanded body. The expanded body expands so that the outer wall of the expanded body abuts against the inner wall of the preformed wet blank and squeezes it. After the expansion body completes the extrusion process, the equipment for filling recyclable objects is turned off, and the equipment for extracting recyclable objects is turned on. The expansion body shrinks into the airflow channel and detaches from the wet embryo. The equipment for extracting recyclable objects is turned off, and the transfer mechanism drives the suction component to rise.

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