Molded pulp lifting structure and molded pulp product production equipment

Abstract

The utility model relates to the technical field of paper pulp molding, and discloses a paper pulp molding lifting structure and paper pulp molding product production equipment, and the paper pulp molding lifting structure comprises a fixed end, a hose and a movable end, the fixed end and the movable end are hollow; an inlet of the movable end is connected to an air chamber, an outlet of the movable end is connected to an inlet of the hose, an outlet end of the hose is connected to a first inlet end of the fixed end, and a first outlet end of the fixed end is connected to a drain pipe; the outlet of the movable end can enable the vertical direction position of the inlet end of the hose to be higher than the vertical direction position of the outlet end of the hose through lifting. In paper pulp molded product production equipment, a hose moves up and down along with an air chamber of a hot-pressing lower die to form a swing structure. When the hot-pressing lower die ascends to the highest point, the fixed end is lower than the movable end, condensate water can flow to the fixed end along the hose and is discharged, and the influence of accumulation on product quality is avoided. The hose connecting structure is simple, the production technology cost is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pulp molding technology, and in particular to a pulp molding lifting structure and pulp molding product production equipment. Background Technology

[0002] Pulp molded products are widely used in the electronics and food industries due to their advantages such as environmental friendliness and good cushioning performance. In their production process, hot pressing is a key step. The upper mold moves horizontally and the lower mold moves up and down during hot pressing. A large amount of water vapor is generated when the wet blank is closed and hot pressed, which needs to be discharged through a specific pipeline.

[0003] Currently, there are two main solutions to address the issues of pipeline adaptation and condensate drainage during the raising and lowering of the hot press mold. One is the U-shaped flexible hose solution. In this solution, one end of the U-shaped flexible hose is fixed, while the other end moves with the hot press mold, relying on the hose's deformation to adapt to the mold's raising and lowering. While this solution is simple and easy to implement, the bottom of the U-bend is the lowest point, making it prone to condensate accumulation. When transferring the dried product with airflow, the condensate is carried out, leading to an increase in the moisture content of the dried product and affecting product quality.

[0004] The second option is a telescopic sleeve solution, which achieves lifting and lowering movements through a telescopic sleeve. The telescopic sleeve consists of an inner tube and an outer tube, with the inner tube sliding within the outer tube to coordinate with the lower mold's lifting and lowering. However, this solution has a complex structure, requires advanced manufacturing processes, and significantly increases equipment production costs. Furthermore, during use, due to the high temperature of the hot-pressing mold, the seals between the sleeves are prone to wear and aging, requiring frequent replacement, resulting in high maintenance costs and a complex process. Utility Model Content

[0005] The purpose of this invention is to solve the problem of condensate drainage while reducing manufacturing and maintenance costs.

[0006] To achieve the above objectives, this utility model provides a pulp molding lifting structure comprising: a fixed end, a flexible hose, and a movable end;

[0007] Both the fixed end and the moving end are hollow;

[0008] The inlet of the mobile end is used to connect to the air chamber, the outlet of the mobile end is connected to the inlet of the hose, the outlet end of the hose is connected to the first inlet end of the fixed end, and the first outlet end of the fixed end is used to connect to the drain pipe.

[0009] The mobile terminal's outlet can be raised or lowered so that the vertical position of the hose's inlet end is higher than the vertical position of the hose's outlet end.

[0010] Preferably, the fixed end includes a first outlet end and a second outlet end, the first outlet end being used to connect to a drain pipe to discharge condensate, and the second outlet end being used to connect to a vacuum tube to discharge water vapor.

[0011] Preferably, the pulp molding lifting structure further includes a control component, with a first switch valve connected to the first outlet end and a second switch valve provided at the second outlet end, and the first and second switch valves being electrically connected to the control component.

[0012] Preferably, the fixed end includes a first inlet end and a second inlet end, the second inlet end being used to connect to a pressure source.

[0013] Preferably, a third switching valve is connected to the second inlet end, and the third switching valve is electrically connected to the control component.

[0014] Preferably, the pulp molding lifting structure further includes a fixing frame, with the fixing end fixedly connected to the fixing frame, which is used to fix the connection to the machine frame.

[0015] Preferably, the hose is made of rubber or plastic.

[0016] A pulp molding product manufacturing equipment includes: a pulp molding lifting structure, an air chamber, a hot pressing upper mold, a hot pressing lower mold, and a moving part, as described in any of the above claims;

[0017] The movable part is fixedly connected to the lower end of the hot pressing mold and can drive the hot pressing mold to move in the vertical direction. The hot pressing upper mold covers the hot pressing lower mold. The air chamber is fixedly connected to the hot pressing lower mold and is located between the hot pressing upper mold and the hot pressing lower mold.

[0018] Compared with the prior art, the beneficial effects of this utility model embodiment of a pulp molding lifting structure and pulp molding product production equipment are as follows:

[0019] (1) The hose moves up and down with the air chamber of the hot-pressing mold, forming a swing structure. When the hot-pressing mold rises to its highest point, the fixed end is lower than the moving end. Based on gravity, the condensate can naturally flow along the hose to the fixed end and then be discharged through the corresponding drainage system. This avoids the problem of condensate accumulating in the pipeline and being carried out, which affects the product quality. This effectively ensures that the moisture content of the dried product meets the production standards and improves the overall quality of the product.

[0020] (2) Compared with the telescopic sleeve solution, the hose connection structure of this solution is simpler. The hose connection method of this solution does not require a complex inner and outer tube telescopic structure, which greatly simplifies the design and manufacturing process of the pipeline system, reduces the technical difficulty and process requirements in the production process, thereby reducing the production cost of the equipment and making the production process more economical and efficient.

[0021] (3) The hose structure does not have a complex sealing design, which reduces the maintenance workload and cost caused by sealing problems. At the same time, the simple structure of the hose makes it easier to repair and replace when a failure occurs, enabling quick resumption of production, improving production efficiency, and ensuring the continuity and stability of production.

[0022] (4) In the production process of pulp molded products, the lifting and lowering of the hot-pressing die is frequent and necessary. The flexible hose can adapt well to this dynamic change. One end of the hose is fixed to the fixed end, and the other end is connected to the moving end and moves up and down with the hot-pressing die. Its swing structure can naturally adjust its angle and position with the lifting and lowering of the die, always maintaining good connection and drainage functions. This adaptive characteristic allows the pipeline system to operate stably under different production conditions without frequent adjustments or replacements of parts, meeting the requirements of flexibility and reliability of the pipeline system in the production process of pulp molded products, and ensuring smooth production. Attached Figure Description

[0023] Figure 1 This is the first state from the first perspective of the embodiment of the pulp molding lifting structure of this utility model;

[0024] Figure 2 This is the second state from the first perspective of the embodiment of the pulp molding lifting structure of this utility model;

[0025] Figure 3 This is the first state from the second perspective of the embodiment of the pulp molding lifting structure of this utility model;

[0026] Figure 4 This is the second state from the second perspective of the embodiment of the pulp molding lifting structure of this utility model;

[0027] Figure 5 This is the first state of the embodiment of the pulp molding product production equipment of this utility model;

[0028] Figure 6 This is the second state of the embodiment of the pulp molding product production equipment of this utility model.

[0029] In the diagram, 1 is the fixed end; 11 is the first inlet end; 12 is the second inlet end; 13 is the first outlet end; and 14 is the second outlet end.

[0030] 2. Hose; 3. Moving end; 4. Third switch valve; 5. Mounting bracket;

[0031] 200, air chamber; 300, hot press lower mold; 400, moving parts. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "provided with," and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] like Figures 1-4 As shown, a preferred embodiment of the pulp molding lifting structure of this utility model includes: a fixed end 1, a flexible hose 2, and a movable end 3;

[0036] Both the fixed end 1 and the movable end 3 are hollow;

[0037] The inlet of the mobile end 3 is used to connect to the air chamber 200, the outlet of the mobile end 3 is connected to the inlet of the hose 2, the outlet end of the hose 2 is connected to the first inlet end 11 of the fixed end 1, and the first outlet end 13 of the fixed end 1 is used to connect to the drain pipe.

[0038] The outlet of the mobile terminal 3 can be raised and lowered so that the vertical position of the inlet end of the hose 2 is higher than the vertical position of the outlet end of the hose 2.

[0039] Based on the above scheme, the hose 2 moves up and down with the air chamber 200 of the hot-pressing mold 300, forming a swing structure. When the hot-pressing mold 300 rises to its highest point, the fixed end 1 is lower than the moving end 3. Due to gravity, the condensate can naturally flow along the hose 2 to the fixed end 1 and then be discharged through the corresponding drainage system. This avoids the problem of condensate accumulating in the pipeline and being carried out, affecting product quality. This effectively ensures that the moisture content of the dried product meets production standards and improves the overall quality of the product. The hose 2 connection structure in this scheme is simple. The hose 2 connection method in this scheme does not require a complex inner and outer tube telescopic structure, greatly simplifying the design and manufacturing process of the pipeline system, reducing the technical difficulty and process requirements in the production process, thereby reducing the production cost of the equipment and making the production process more economical and efficient. The hose 2 structure does not have a complex sealing design, reducing the maintenance workload and cost caused by sealing problems. At the same time, the simple structure of the hose 2 makes it easier to repair and replace in case of failure, enabling rapid resumption of production, improving production efficiency, and ensuring the continuity and stability of production. In the production process of molded pulp products, the lifting and lowering of the hot-pressing die 300 is frequent and necessary. The flexible hose 2 adapts well to this dynamic change. One end of the hose 2 is fixed to the fixed end 1, and the other end is connected to the moving end 3, moving up and down with the hot-pressing die 300. Its oscillating structure can naturally adjust its angle and position with the lifting and lowering of the die, always maintaining good connection and drainage functions. This self-adaptive characteristic allows the piping system to operate stably under different production conditions without frequent adjustments or replacements of parts, meeting the flexibility and reliability requirements of the piping system in the production of molded pulp products and ensuring smooth production.

[0040] Furthermore, the fixed end 1 includes a first outlet end 13 and a second outlet end 14. The first outlet end 13 is used to connect to a drain pipe to discharge condensate, and the second outlet end 14 is used to connect to a vacuum tube to discharge water vapor.

[0041] Based on the above scheme, during the production of molded pulp products, the hot pressing stage generates a large amount of mixed gas containing water vapor and condensate. In this embodiment, the fixed end 1 is equipped with a first outlet end 13 and a second outlet end 14, which are connected to a drain pipe and a vacuum pipe, respectively. Utilizing the different physical properties of the two, water vapor can be drawn out of the system more quickly under the negative pressure environment formed by the vacuum pipe, avoiding the accumulation of condensate in the pipeline; while the condensate, under the action of gravity, flows through the hose 2 to the first outlet end 13 of the fixed end 1, and is then discharged through the drain pipe. This design achieves efficient separation and timely discharge of water vapor and condensate, preventing condensate residue in the equipment or product from affecting quality, and avoiding potential damage to the equipment caused by water vapor accumulation, ensuring the continuity of production and the stability of product quality, and improving production efficiency. The vacuum pipe connected to the second outlet end 14 can effectively suction the water vapor generated during the hot pressing process. By reasonably setting the negative pressure and pumping rate of the vacuum pipe, the flow direction and speed of water vapor in the hot pressing area can be precisely controlled, allowing the water vapor to be discharged quickly along a predetermined path. This not only helps improve the separation effect of condensate, but also prevents water vapor from spreading around the equipment, improves the environmental humidity of the production workshop, reduces the adverse effects of excessive humidity on operators and equipment, and creates a more stable and suitable environment for production.

[0042] Furthermore, the pulp molding lifting structure also includes a control component. A first switch valve is connected to the first outlet end 13, and a second switch valve is provided at the second outlet end 14. The first switch valve and the second switch valve are electrically connected to the control component.

[0043] Based on the above scheme, the requirements for condensate and water vapor discharge vary at different production stages in the pulp molding process. Through the electrical connection between the control component and the first and second switching valves, the opening and closing states of the first outlet 13 and the second outlet 14 can be precisely controlled. In some abnormal situations, such as a sudden increase in water vapor pressure or an abnormal increase in condensate production, the control component can adjust the states of the first and second switching valves in a timely manner according to preset safety thresholds. For example, when the water vapor pressure is too high, the control component can quickly close the second switching valve to prevent excessive pressure from damaging the vacuum tube and other components of the equipment; when excessive condensate production may cause drainage problems, the control component can appropriately adjust the opening of the first switching valve or take other emergency measures. This automatic safety protection mechanism enhances the safety of the entire system, reduces the risk of equipment damage due to abnormal conditions, and extends the service life of the equipment.

[0044] Furthermore, the fixed end 1 includes a first inlet end 11 and a second inlet end 12. The second inlet end 12 is used to connect to a pneumatic source. The second inlet end 12 is connected to a third switching valve 4, which is electrically connected to the control component.

[0045] Based on the above scheme, during the pulp drying process, the control component closes the third switch valve 4 and shuts off the air pressure source. The control component also opens the first and second switch valves, opening the first and second outlets. Since the water vapor and condensate generated during the hot pressing process have discharge channels, the condensate can be discharged through the drain pipe connected to the first outlet 13 under gravity, while the water vapor is quickly discharged through the vacuum pipe connected to the second outlet 14 under the negative pressure created by the vacuum tube. This precise control ensures timely discharge of water vapor from the equipment during the drying process, preventing residual water vapor from adversely affecting the quality of the molded pulp products, such as excessive moisture content or uneven surfaces, thus guaranteeing production quality. During demolding, the control component opens the third switch valve 4 and starts the air pressure source. The control component then closes the first and second switch valves, shutting off the first and second outlets. The control component controls the third switch valve 4 to open, and the air pressure source provides air pressure to the equipment through the second inlet 12. This air pressure assists in the separation of the pulp product from the mold, achieving smooth demolding. Closing the first and second outlets prevents external air or impurities from entering the equipment under air pressure, avoiding contamination or damage to the products being demolded and further ensuring product quality.

[0046] Furthermore, the pulp molding lifting structure also includes a fixed frame 5, with the fixed end 1 fixedly connected to the fixed frame 5, and the fixed frame 5 is used to fixally connect to the machine frame.

[0047] Based on the above scheme, during the production of pulp molded products, the lifting and lowering of the hot-pressing die 300, as well as the connection of pipelines and the flow of media, will exert certain forces on the entire structure. The fixed end 1 is connected to the frame via the fixing bracket 5, providing a stable support foundation for the entire connecting pipeline structure. This stable connection method effectively reduces the impact of vibration and shock during equipment operation, as well as the stress caused by the frequent lifting and lowering of the hot-pressing die 300. It prevents loosening, displacement, or damage at the connection between the hose 2 and the fixed end 1, ensuring the stability and reliability of the pipeline system, guaranteeing the normal operation of the equipment, and reducing the risk of equipment failure and production interruption due to structural instability.

[0048] Furthermore, the hose 2 is made of rubber or plastic. During the production of pulp molded products, the hot press die 300 needs to frequently rise and fall, requiring the connecting pipeline to adapt to these dynamic changes. The hose 2, made of rubber or plastic, possesses good flexibility, allowing it to bend and stretch flexibly with the up-and-down movement of the hot press die 300, ensuring good connection and media transmission performance in different positions and orientations. This flexibility effectively avoids problems such as damage to connection points and media leakage caused by pipeline stiffness, ensuring the continuity and stability of the production process.

[0049] like Figure 5 , 6 As shown, a pulp molding product manufacturing equipment includes: a pulp molding lifting structure as described above, an air chamber 200, a hot pressing upper mold, a hot pressing lower mold 300, and a moving part 400.

[0050] The movable component 400 is fixedly connected to the lower end of the hot press lower mold 300 and can drive the hot press lower mold 300 to move in the vertical direction. The hot press upper mold covers the hot press lower mold 300. The air chamber 200 is fixedly connected to the hot press lower mold 300 and is located between the hot press upper mold and the hot press lower mold 300.

[0051] Based on the above scheme, the rationally designed pipeline system in the pulp molding lifting structure can achieve efficient condensate drainage and water vapor discharge. During the pulp drying process, the air pressure source is turned off, and the first and second outlets are opened. Condensate can be smoothly discharged through the drain pipe connected to the first outlet 13, and water vapor can be quickly discharged through the vacuum pipe connected to the second outlet 14. During demolding, the air pressure source is turned on, and the first and second outlets are closed. The air pressure provided by the air pressure source assists in the separation of the pulp product from the mold. This drainage and venting method can effectively avoid the impact of residual moisture on product quality, ensuring that the moisture content, surface smoothness, and other indicators of the pulp molded products meet production standards, thereby improving product quality.

[0052] In summary, this utility model embodiment provides a pulp molding lifting structure and pulp molding product production equipment. The flexible hose 2 moves up and down with the air chamber 200 of the hot-pressing lower mold 300, forming a swing structure. When the hot-pressing lower mold 300 rises to its highest point, the fixed end 1 is lower than the moving end 3, allowing condensate to flow along the flexible hose 2 to the fixed end 1 and be discharged, preventing accumulation that could affect product quality. The flexible hose 2 has a simple connection structure, eliminating the need for complex telescopic structures, thus reducing production technical difficulty and costs. Furthermore, the absence of complex seals reduces maintenance workload and costs, and facilitates easy repair and replacement in case of malfunction. Simultaneously, the flexible hose 2 can adapt to the frequent dynamic changes of the hot-pressing lower mold 300's rise and fall, adjusting its angle and position accordingly to maintain good connection and drainage functions, ensuring smooth production.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A pulp molded lifting structure, characterized by The utility model relates to a paper pulp molding lifting structure, and relates to the technical field of paper pulp molding. It comprises a fixed end (1), a hose (2) and a mobile end (3). Both the fixed end (1) and the mobile end (3) are hollow. The inlet of the mobile end (3) is connected to an air chamber (200), the outlet of the mobile end (3) is connected to the inlet of the hose (2), the outlet end of the hose (2) is connected to the first inlet end (11) of the fixed end (1), and the first outlet end (13) of the fixed end (1) is used to connect a drain pipe. The outlet of the mobile end (3) can be lifted so that the vertical position of the inlet end of the hose (2) is higher than that of the outlet end of the hose (2).

2. The pulp molded lifting structure according to claim 1, characterized by The fixed end (1) comprises a first outlet end (13) and a second outlet end (14), the first outlet end (13) is used to connect a drain pipe to discharge condensed water, and the second outlet end (14) is used to connect a vacuum pipe to discharge water vapor.

3. The pulp molded lifting structure according to claim 2, characterized in that, It further comprises a control assembly, the first outlet end (13) is connected with a first on-off valve, the second outlet end (14) is provided with a second on-off valve, and the first on-off valve and the second on-off valve are electrically connected with the control assembly.

4. The pulp molded lifting structure according to claim 3, characterized in that, The fixed end (1) comprises a first inlet end (11) and a second inlet end (12), and the second inlet end (12) is used to connect to a gas pressure source.

5. The pulp molded lifting structure according to claim 4, characterized in that, The second inlet end (12) is connected with a third on-off valve (4), and the third on-off valve (4) is electrically connected with the control assembly.

6. The pulp molded lifting structure according to claim 1, characterized by It further comprises a fixed frame (5), the fixed end (1) is fixedly connected to the fixed frame (5), and the fixed frame (5) is used to be fixedly connected to a rack.

7. The pulp molded lifting structure according to claim 1, characterized by The hose (2) is made of rubber or plastic.

8. A pulp molded product production apparatus characterized by comprising: The utility model relates to a paper pulp molding lifting structure, and relates to the technical field of paper pulp molding. The mobile part (400) is fixedly connected to the lower end of the hot-pressing lower die (300) and can drive the hot-pressing lower die (300) to move in the vertical direction, the hot-pressing upper die covers the hot-pressing lower die (300), the air chamber (200) is fixedly connected to the hot-pressing lower die (300) and located between the hot-pressing upper die and the hot-pressing lower die (300). ​

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