A paper mold green body forming mechanism

Abstract

The utility model belongs to paper mould wet blank forming technical field, the utility model discloses paper mould wet blank forming mechanism, through the gas path channel on static ring body is arranged in the axial arrangement of the sap suction hole, dehydration hole and blow -hole in the rotation containing cavity bottom wall from the traditional radial periphery optimization, and cooperate the first interface hole and second interface hole of the axial through of dynamic ring body and realize the gas path butt joint, make the whole gas passage switching mechanism structure more compact, thickness is thinner, is favorable to equipment miniaturization and modular design, simultaneously, dynamic ring body is formed multiple sealing cooperation with the rotation containing cavity circumferential inner wall through the first sealing structure of setting up several on the outer periphery, has improved the sealing reliability and long -term operation stability in the gas path switching process significantly, effectively avoided the problem of the air tightness decline because of sealing wear.

Description

Technical Field

[0001] This utility model belongs to the field of paper mold wet blank forming technology, specifically relating to paper mold wet blank forming mechanism. Background Technology

[0002] Pulp molding is a green and environmentally friendly product made from plant fiber pulp or waste paper that can be fully recycled and reused. It is widely used in tableware, appliance packaging, planting and seedling cultivation, handicraft blanks and fragile item padding packaging, etc. It is currently the best alternative to foam plastic products.

[0003] In the production process of pulp molded products, wet preform forming is a core step, and its process effect directly affects the weight control, wall thickness uniformity, and overall yield of the final product. Taking the "Paper Mold Wet Preform Forming System and a Paper Mold Wet Preform Forming Equipment" disclosed in Chinese Patent CN108316059A as an example, the existing technology usually adopts a system layout including a frame, a rotating shaft, a dynamic and static ring assembly, and a mold fixing mechanism to achieve continuous forming of wet preforms. In this structure, the dynamic and static ring assembly consists of a static ring body and a dynamic ring body. The static ring body is circumferentially equipped with a pulp suction air chamber, a dehydration air chamber, and a blow-out air chamber, while the dynamic ring body rotates with the rotating shaft, causing the airflow channel of the mold fixing mechanism to sequentially connect with the above three air chambers, thereby sequentially completing key operations such as pulp suction forming, vacuum dehydration, and blow-out demolding.

[0004] Nevertheless, this dynamic-static ring structure still has certain limitations in practical applications: On the one hand, since the multiple functional air chambers on the static ring are arranged radially around the periphery, and their air inlets and outlets are respectively located on the outer periphery and end face of the static ring, the overall structure is relatively complex, and the radial and axial space occupies a large amount, which is not conducive to achieving miniaturization and compact design of the equipment; on the other hand, the air chambers rely on a single layer of sealing rings for sealing, and during long-term high-speed operation, the sealing elements are prone to wear, resulting in a gradual decrease in airtightness, which in turn affects the vacuum degree and air pressure stability during the slurry suction and blow-off process, ultimately adversely affecting the consistency of the forming quality of the wet paper mold blank. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of existing paper mold wet blank forming mechanisms, where the airflow docking position of the moving ring and the stationary ring is set in the outer circumferential direction, resulting in large radial and axial dimensions of the stationary and moving rings and poor air tightness. The invention provides a paper mold wet blank forming mechanism that sets the airflow docking position between the axial end faces of the moving ring and the stationary ring, making the thickness between the moving ring and the stationary ring thinner and providing air tightness.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A paper mold wet blank forming mechanism is characterized by comprising a frame, a paper mold blank forming module, and an air passage switching mechanism.

[0008] The frame has a slurry tank located on the side, and the slurry tank is equipped with a slurry cavity.

[0009] The paper mold blank forming module has an outer opening and a first suction mold cavity and a second suction mold cavity arranged opposite to each other. The first suction mold cavity is equipped with a first air hole located on the inner side and a first air flow pipe connected to the first air hole. The second suction mold cavity is equipped with a second air hole located on the inner side and a second air flow pipe connected to the second air hole. When the paper mold blank forming module is rotatably connected to the frame via a rotating shaft and can rotate relative to each other, the first suction mold cavity and the second suction mold cavity sequentially enter the slurry cavity and sequentially leave the slurry cavity.

[0010] The airway switching mechanism includes a stationary ring body mounted on a frame and a rotating ring body mounted on a rotating shaft. The stationary ring body has a rotating accommodating cavity with a circular opening at the front. The bottom wall of the rotating accommodating cavity is provided with suction holes, dewatering holes, and air blowing holes arranged axially. The rotating ring body is disposed in the accommodating cavity and can rotate relative to the stationary ring body when the rotating shaft rotates. The outer periphery of the rotating ring body is provided with several first sealing structures arranged axially. The rotating ring body is sealed to the circumferential inner wall of the rotating accommodating cavity through the several first sealing structures.

[0011] The moving ring body is provided with a first connection hole and a second connection hole that extend through both sides along the axial direction. The outer end of the first airflow pipe is connected to the first connection hole, and the outer end of the second airflow pipe is connected to the second connection hole. The first airflow pipe and the second airflow pipe can be connected to the suction hole, the dewatering hole and the blowing hole in sequence as the moving ring body rotates relative to each other, so that the first suction mold cavity and the second suction mold cavity can complete the paper mold suction molding in the slurry cavity and the paper mold blank can be separated from the slurry cavity to complete dewatering and drying and blowing demolding.

[0012] Compared with existing technologies, the paper mold wet blank forming mechanism of this utility model optimizes the air passage arrangement on the stationary ring body from the traditional radial circumferential arrangement to an axial arrangement of suction holes, dewatering holes, and air blowing holes on the bottom wall of the rotating accommodating cavity. This, combined with the first and second connecting holes axially connected on the moving ring body, achieves air passage connection. This makes the entire air passage switching mechanism more compact and thinner, which is beneficial for equipment miniaturization and modular design. Simultaneously, the moving ring body, through several first sealing structures on its outer periphery, forms a multi-layered sealing fit with the circumferential inner wall of the rotating accommodating cavity, significantly improving the sealing reliability and long-term operational stability during air passage switching. This effectively avoids the problem of decreased airtightness due to seal wear, thereby ensuring stable and precise control of air pressure at each stage of suction, dewatering, and air blowing demolding. Ultimately, this results in better consistency in the forming quality of the paper mold wet blank, a higher yield, and reduced energy consumption and maintenance costs.

[0013] Furthermore, the outer periphery of the moving ring is provided with several sealing grooves arranged along the axial direction, and the first sealing structure is a sealing ring provided in the sealing groove; the first sealing structure is provided with two, three, four or five; with this arrangement, the first sealing structure is simple to set and the airtightness between the moving ring and the stationary ring is good.

[0014] Furthermore, the frame is provided with a connecting seat on the front side of the paper mold blank forming module. The stationary ring is disposed on the connecting seat, and the moving ring is disposed between the paper mold blank forming module and the stationary ring. The stationary ring has a clearance hole in the middle. The rotating shaft passes through the clearance hole and is sequentially connected to the moving ring and the paper mold blank forming module. The outer end of the rotating shaft is equipped with a drive device, which includes a drive motor directly connected to the rotating shaft through a gearbox. With this arrangement, by fixing the stationary ring to the connecting seat on the front side of the frame and placing the moving ring between the paper mold blank forming module and the stationary ring, while the rotating shaft sequentially passes through the clearance hole of the stationary ring to form a transmission connection with the moving ring and the paper mold blank forming module, this layout is compact and stable, effectively ensuring the coaxiality and relative position accuracy between the moving and stationary ring components during the rotating shaft transmission process. This not only reduces the difficulty of equipment assembly and operating vibration, but also significantly improves the accuracy of airway switching and long-term working reliability, which is conducive to extending the service life of the equipment.

[0015] Furthermore, the first and second connecting holes are symmetrically arranged on both sides of the moving ring body, and the suction hole and air blowing hole are correspondingly arranged on both sides of the stationary ring body. The dewatering hole is located between the suction hole and the air blowing hole. The suction hole and the air blowing hole have the same inner diameter. By symmetrically arranging the first and second connecting holes on the moving ring body on the same diameter line, and symmetrically arranging the suction hole and the air blowing hole on both sides of the same diameter line on the stationary ring body, the air path layout is more balanced and reasonable. This not only optimizes the force distribution of the moving ring body during the rotation switching process and improves the stability of operation, but also effectively shortens the switching path between each process stage, improves the production cycle and work efficiency, and ensures the synchronization and consistency of the mold forming and dewatering actions on both sides.

[0016] Furthermore, the dehydration hole is located in the arc-shaped waist-shaped hole of the stationary ring body, and a vertically arranged reinforcing rib is provided in the middle of the waist-shaped hole. By setting the dehydration hole on the stationary ring body as an arc-shaped waist-shaped hole and providing a reinforcing rib in the middle, the effective adsorption area and airflow permeability during dehydration are effectively increased, and the local structural rigidity and deformation resistance of the stationary ring body in this key area are significantly enhanced. Thus, while ensuring dehydration efficiency, the dimensional stability and service life of the airway switching mechanism under long-term high-speed operation are improved.

[0017] Furthermore, the stationary ring body has a transition seat protruding towards the rotating accommodating cavity in the middle, and the clearance hole is provided on the transition seat. The rotating ring body has a movable hole that fits onto the transition seat, and the movable hole and the transition seat are sealed together by a second sealing structure. With this arrangement, by setting the transition seat and fitting the movable hole of the rotating ring body with it, and by using the second sealing structure to ensure dynamic sealing between the two, the structural concentricity and radial sealing reliability of the shaft transmission area are effectively enhanced, preventing the intrusion of external impurities and internal airflow leakage. This ensures the long-term stability of the rotating and stationary ring assembly and the sealing integrity of the process air path under complex working conditions.

[0018] Furthermore, the outer periphery of the adapter is provided with several sealing grooves along the axial direction, and the second sealing structure is a sealing ring disposed in the sealing groove; with this arrangement, the second sealing structure is simple to set, and the airtightness between the moving ring and the stationary ring is good.

[0019] Furthermore, the suction hole is connected to a suction vacuum device via a suction pipe, and the suction pipe is equipped with a suction control valve to control its working flow. The dehydration hole is connected to a dehydration vacuum device via a dehydration pipe, and the dehydration pipe is equipped with a dehydration control valve to control its working flow. The air blowing hole is connected to an air blowing device via an air blowing pipe, and the air blowing pipe is equipped with an air blowing control valve to control its working flow. The air blowing device enables the air blowing hole to perform air blowing demolding or dehydration and drying processes by controlling its forward and reverse operation. With this configuration, the suction hole, dehydration hole, and air blowing hole are each independently equipped with a dedicated suction vacuum device, a dehydration vacuum device, and a forward and reverse working air blowing device, realizing independent and precise control and rapid switching of the air path for each molding process. This not only significantly improves the process efficiency and quality stability of suction molding, dehydration and drying, and air blowing demolding, but also optimizes the system structure by reusing the forward and reverse functions of the air blowing device, reducing equipment costs and energy consumption.

[0020] Furthermore, it also includes a pulp agitator, which is used to stir the pulp in the pulp chamber; the pulp agitator includes a stirring driver and a stirring paddle disposed in the pulp chamber, the stirring driver and the stirring paddle being drivenly connected; with this configuration, by setting the stirring paddle driven by the stirring driver, the uniform suspension state of the pulp fibers in the pulp chamber can be effectively maintained, preventing sedimentation and clumping, thereby ensuring that the wet paper mold blank can obtain uniform thickness during the pulp suction forming stage, significantly improving the quality consistency and forming qualification rate of the final product. Attached Figure Description

[0021] Figure 1 Schematic diagram of the paper mold wet blank forming mechanism Figure 1 .

[0022] Figure 2Schematic diagram of the paper mold wet blank forming mechanism Figure 2 .

[0023] Figure 3 A schematic diagram showing the removal of the slurry tank from the paper mold wet blank forming mechanism.

[0024] Figure 4 This is a schematic diagram of a stationary ring.

[0025] Figure 5 This is a schematic diagram of a moving ring.

[0026] Labeling Explanation: Frame 1, Paper Mold Blank Forming Module 2, Air Channel Switching Mechanism 3, Slurry Agitator 6, Slurry Tank 11, Slurry Chamber 12, First Slurry Suction Mold Chamber 21, Second Slurry Suction Mold Chamber 22, First Airflow Pipe 211, Second Airflow Pipe 212, Moving Ring 4, Stationary Ring 5, Rotating Receptacle 50, Slurry Suction Hole 51, Dewatering Hole 52, Air Blowing Hole 53, First Connecting Hole 41, Second Connecting Hole 42, First Sealing Structure 43, Connecting Seat 13, Adapter Seat 54, Clearance Hole 55, Movable Hole 44, Second Sealing Structure 56, Slurry Suction Pipe 510, Dewatering Pipe 520, Air Blowing Pipe 530, Agitator Driver 61, Agitator Paddle 62, Encoder 7, Encoding Gear 71, Transmission Belt 72, Rotating Shaft 20, Reinforcing Rib 521, Drive Device 8. Detailed Implementation

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model.

[0028] See Figures 1 to 5 The paper mold wet blank forming mechanism of this utility model includes a frame 1, a paper mold blank forming module 2, an air channel switching mechanism 3, and a slurry agitator 6.

[0029] The frame 1 has a slurry tank 11 located at the rear, and the slurry tank 11 has a slurry cavity 12 with an upper opening.

[0030] The paper mold blank forming module 2 has an outer opening and a first suction mold cavity 21 and a second suction mold cavity 22 located on the lower side. The first suction mold cavity 21 is provided with a first air hole (not shown) and a first air flow pipe 211 connected to the first air hole. The second suction mold cavity 22 is provided with a second air hole (not shown) and a second air flow pipe 212 connected to the second air hole. When the paper mold blank forming module 2 is rotatably connected to the frame 1 via a rotating shaft 20 and can rotate relative to each other, the first suction mold cavity 21 and the second suction mold cavity 22 sequentially enter into the slurry cavity 12 and sequentially leave the slurry cavity 12.

[0031] The airway switching mechanism 3 includes a stationary ring 5 mounted on the frame 1 and a rotating ring 4 mounted on the rotating shaft 20. The stationary ring 5 has a rotating accommodating cavity 50 with a circular opening on the front side. The bottom wall of the rotating accommodating cavity 50 is provided with suction holes 51, dewatering holes 52 and air blowing holes 53 arranged along the axial direction. The rotating ring 4 is disposed in the accommodating cavity and can rotate relative to the stationary ring 5 when the rotating shaft 20 rotates. At least two circumferential positions of the rotating ring 4 are respectively provided with first sealing structures 43. The rotating ring 4 is sealed with the circumferential inner wall of the rotating accommodating cavity 50 through a plurality of first sealing structures 43.

[0032] The moving ring body 4 is provided with a first connecting hole 41 and a second connecting hole 42 that extend through both sides along the axial direction. The outer end of the first airflow pipe 211 is connected to the first connecting hole 41, and the outer end of the second airflow pipe 212 is connected to the second connecting hole 42. When the moving ring body 4 rotates relative to each other, the first airflow pipe 211 and the second airflow pipe 212 can sequentially connect with the slurry suction hole 51, the dewatering hole 52 and the air blowing hole 53, so that the first slurry suction mold cavity 21 and the second slurry suction mold cavity 22 can respectively complete the paper mold slurry suction forming in the slurry cavity 12 and remove the paper mold blank from the slurry cavity 12 to complete dewatering, drying and air blowing demolding.

[0033] The slurry agitator 6 is used to stir the slurry chamber 12 inside the slurry chamber 12.

[0034] Compared with the prior art, the paper mold wet blank forming mechanism of this utility model optimizes the air passage on the stationary ring 5 from the traditional radial circumferential arrangement to an axial arrangement of suction holes 51, dewatering holes 52 and air blowing holes 53 on the bottom wall of the rotating accommodating cavity 50. The air passage is connected with the first connecting hole 41 and the second connecting hole 42 that are axially connected on the moving ring 4. This makes the entire air passage switching mechanism 3 more compact and thinner, which is conducive to the miniaturization and modular design of the equipment. At the same time, the moving ring 4 sets a first sealing structure 43 at at least two circumferential positions and forms a multi-seal cooperation with the circumferential inner wall of the rotating accommodating cavity 50. This significantly improves the sealing reliability and long-term operational stability during the air passage switching process, effectively avoids the problem of reduced air tightness caused by seal wear, and thus ensures the stability and precise control of air pressure in each stage of suction, dewatering and air blowing demolding. Ultimately, this results in better consistency of the forming quality of the paper mold wet blank, higher yield, and reduced energy consumption and maintenance costs.

[0035] See Figures 1 to 5 In one embodiment, a sealing groove (not shown) is provided at each of the two circumferential positions of the moving ring body 4. The first sealing structure 43 is a sealing ring disposed within the sealing groove, and the sealing ring has a circular, elliptical, or rectangular cross-section. This arrangement simplifies the arrangement of the first sealing structure 43 and ensures good airtightness between the moving ring body 4 and the stationary ring body 5. Alternatively, in one embodiment, a plurality of first sealing structures 43 arranged axially are provided on the outer periphery of the moving ring body 4, and a plurality of sealing grooves arranged axially are provided on the outer periphery of the moving ring body 4. The first sealing structure 43 is a sealing ring disposed within the sealing groove; for example, there may be two, three, four, or five first sealing structures 43.

[0036] See Figures 1 to 5 In one embodiment, the frame 1 is provided with a connecting seat 13 located in front of the paper mold blank forming module 2. The stationary ring 5 is disposed on the connecting seat 13, and the moving ring 4 is disposed between the paper mold blank forming module 2 and the stationary ring 5. The stationary ring 5 has a clearance hole 55 in the middle. The rotating shaft 20 passes through the clearance hole 55 and is sequentially connected to the moving ring 4 and the paper mold blank forming module 2. A driving device 8 is disposed at the outer end of the rotating shaft 20. With this arrangement, by fixing the stationary ring 5 to the front of the frame 1... The connecting seat 13 on the side is used to place the moving ring 4 between the paper mold blank forming module 2 and the stationary ring 5. At the same time, the rotating shaft 20 passes through the clearance hole 55 of the stationary ring 5 to form a transmission connection with the moving ring 4 and the paper mold blank forming module 2. This layout is compact and stable, effectively ensuring the coaxiality and relative position accuracy between the moving ring 4 and the stationary ring 5 during the transmission process of the rotating shaft 20. This not only reduces the difficulty of equipment assembly and operating vibration, but also significantly improves the accuracy of airway switching and long-term working reliability, which is conducive to extending the service life of the equipment.

[0037] See Figures 1 to 5 In one embodiment, the first connecting hole 41 and the second connecting hole 42 are symmetrically arranged on both sides of the same diameter line of the moving ring body 4, and the suction hole 51 and the air blowing hole 53 are correspondingly symmetrically arranged on both sides of the same diameter line of the stationary ring body 5. The dewatering hole 52 is located between the suction hole 51 and the air blowing hole 53, and the inner diameter of the suction hole and the air blowing hole are the same. Preferably, the dewatering hole 52 is located at the lower part of the stationary ring body 5. By symmetrically arranging the first connecting hole 41 and the second connecting hole 42 on the moving ring body 4 on the same diameter line, and symmetrically arranging the suction hole 51 and the air blowing hole 53 on the stationary ring body 5 on the same diameter line, with the dewatering hole 52 located at the lower part, the air path layout is more balanced and reasonable. This not only optimizes the force distribution of the moving ring body 4 during the rotation switching process and improves the stability of operation, but also effectively shortens the switching path between each process stage, improves the production cycle and work efficiency, and ensures the synchronization and consistency of the mold forming and dewatering actions on both sides.

[0038] See Figures 1 to 5 In one embodiment, the dehydration hole 52 is located in the waist-shaped arc-shaped hole of the stationary ring body 5, and a vertically arranged reinforcing rib 521 is provided in the middle of the waist-shaped hole. By setting the dehydration hole 52 on the stationary ring body 5 as an arc-shaped waist-shaped hole and providing a reinforcing rib 521 in the middle, the effective adsorption area and airflow permeability during dehydration are effectively increased, and the local structural rigidity and deformation resistance of the stationary ring body 5 in this key area are significantly enhanced. Thus, while ensuring dehydration efficiency, the dimensional stability and service life of the airway switching mechanism 3 under long-term high-speed operation are improved. Preferably, the thickness of the reinforcing rib 521 is less than the thickness of the waist-shaped hole.

[0039] See Figures 1 to 5 In one embodiment, the stationary ring 5 has a transition seat 54 protruding towards the rotating accommodating cavity 50 in the middle. The clearance hole 55 is provided on the transition seat 54. The moving ring 4 has a movable hole 44 that fits onto the transition seat 54. The movable hole 44 and the transition seat 54 are sealed together by a second sealing structure 56. With this arrangement, by setting the transition seat 54 and fitting the movable hole 44 of the moving ring 4 onto it, and by using the second sealing structure 56 to ensure dynamic sealing between the two, the structural concentricity and radial sealing reliability of the transmission area of ​​the rotating shaft 20 are effectively enhanced, preventing the intrusion of external impurities and internal airflow leakage. This ensures the long-term stability of the moving and stationary ring assemblies and the sealing integrity of the process air path under complex working conditions.

[0040] See Figures 1 to 5In one embodiment, the adapter 54 has a plurality of sealing grooves (not shown) along the axial direction on its outer periphery, and the second sealing structure 56 is a sealing ring disposed in the sealing groove; with this arrangement, the second sealing structure 56 is simple to set and the airtightness between the moving ring 4 and the stationary ring 5 is good.

[0041] See Figures 1 to 5 In one embodiment, the suction hole 51 is externally connected to a suction vacuum device (not shown) via a suction pipe 510, and the suction pipe is equipped with a suction control valve (not shown) to control its working flow rate. The dewatering hole 52 is externally connected to a dewatering vacuum device (not shown) via a dewatering pipe 520, and the dewatering pipe is equipped with a dewatering control valve (not shown) to control its working flow rate. The air blowing hole 53 is externally connected to an air blowing device (not shown) via an air blowing pipe 530, and the air blowing pipe is equipped with an air blowing control valve (not shown) to control its working flow rate. The air blowing device enables the air blowing hole 53 to perform air blowing demolding or dehydration and drying processes by controlling its forward and reverse operation. With this configuration, the slurry suction hole 51, dehydration hole 52 and air blowing hole 53 are each independently equipped with a dedicated slurry suction vacuum device, a dehydration vacuum device and an air blowing device that can operate in both forward and reverse directions. This realizes independent and precise control and rapid switching of the air path for each molding process, which not only significantly improves the process efficiency and quality stability of slurry suction molding, dehydration and drying and air blowing demolding, but also optimizes the system structure by reusing the forward and reverse functions of the air blowing device, thereby reducing equipment costs and energy consumption.

[0042] See Figures 1 to 5 In one embodiment, the slurry agitator 6 includes a stirring driver 61 and a stirring paddle 62 disposed in the slurry chamber 12, wherein the stirring driver 61 is convexly connected to the stirring paddle 62. With this configuration, by setting the stirring paddle 62 driven by the stirring driver 61, the uniform suspension state of the pulp fibers in the slurry chamber 12 can be effectively maintained, preventing sedimentation and clumping, thereby ensuring that the wet paper mold blank can obtain uniform thickness during the slurry suction forming stage, significantly improving the quality consistency and forming qualification rate of the final product.

[0043] See Figures 1 to 5 In one embodiment, the device further includes an encoder 7 disposed on the side of the stationary ring 5 of the connecting seat 13. The rotating shaft 20 is equipped with an encoding gear 71. The rotating wheel of the encoder 7 is connected to the encoding gear 71 via a transmission belt 72. The encoder 7 is used to acquire the rotational working data of the rotating shaft 20. The rotational working data includes the angular velocity and the number of rotations of the rotating shaft 20.

[0044] See Figures 1 to 5In one embodiment, the drive device 8 includes a drive motor and a transmission, the drive motor being directly connected to the rotating shaft 20 via the transmission; or, the drive device 8 includes only a drive motor, the drive device 8 being directly connected to the rotating shaft 20.

[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A paper mold wet blank forming mechanism, characterized in that, include: The frame has a slurry tank located on the side, and the slurry tank is equipped with a slurry cavity; The paper mold blank forming module has an outer opening and a first suction mold cavity and a second suction mold cavity arranged opposite to each other. The first suction mold cavity is equipped with a first air hole located on the inner side and a first air flow pipe connected to the first air hole. The second suction mold cavity is equipped with a second air hole located on the inner side and a second air flow pipe connected to the second air hole. When the paper mold blank forming module is rotatably connected to the frame via a rotating shaft and can rotate relative to each other, the first suction mold cavity and the second suction mold cavity sequentially enter the slurry cavity and sequentially leave the slurry cavity. The airway switching mechanism includes a stationary ring body mounted on a frame and a rotating ring body mounted on a rotating shaft. The stationary ring body has a rotating accommodating cavity with a circular opening at the front. The bottom wall of the rotating accommodating cavity is provided with suction holes, dewatering holes and air blowing holes arranged along the axial direction. The rotating ring body is disposed in the accommodating cavity and can rotate relative to the stationary ring body when the rotating shaft rotates. The outer periphery of the rotating ring body is provided with several first sealing structures arranged along the axial direction. The rotating ring body is sealed with the circumferential inner wall of the rotating accommodating cavity through several first sealing structures. The moving ring body is provided with a first connection hole and a second connection hole that extend through both sides along the axial direction. The outer end of the first airflow pipe is connected to the first connection hole, and the outer end of the second airflow pipe is connected to the second connection hole. The first airflow pipe and the second airflow pipe can be connected to the suction hole, the dewatering hole and the blowing hole in sequence as the moving ring body rotates relative to each other, so that the first suction mold cavity and the second suction mold cavity can complete the paper mold suction molding in the slurry cavity and the paper mold blank can be separated from the slurry cavity to complete dewatering and drying and blowing demolding.

2. The paper mold wet blank forming mechanism according to claim 1, characterized in that, The outer periphery of the moving ring is provided with a plurality of sealing grooves arranged along the axial direction, and the first sealing structure is a sealing ring disposed in the sealing groove. The first sealing structure may have two, three, four, or five components.

3. The paper mold wet blank forming mechanism according to claim 1, characterized in that, The frame is provided with a connecting seat on the front side of the paper mold blank forming module. The stationary ring is set on the connecting seat, and the moving ring is set between the paper mold blank forming module and the stationary ring. The stationary ring is provided with a clearance hole in the middle. The rotating shaft passes through the clearance hole and is connected to the moving ring and the paper mold blank forming module in sequence. The outer end of the rotating shaft is provided with a drive device, which includes a drive motor that is directly connected to the rotating shaft through a gearbox.

4. The paper mold wet blank forming mechanism according to claim 3, characterized in that, The first and second connecting holes are symmetrically arranged on both sides of the moving ring body, the slurry suction hole and the air blowing hole are correspondingly arranged on both sides of the stationary ring body, the dewatering hole is located between the slurry suction hole and the air blowing hole, and the inner diameter of the slurry suction hole and the air blowing hole is the same.

5. The paper mold wet blank forming mechanism according to claim 4, characterized in that, The dehydration hole is located in the waist-shaped hole of the stationary ring body, and the waist-shaped hole is provided with vertically arranged reinforcing ribs in the middle.

6. The paper mold wet blank forming mechanism according to claim 3, characterized in that, The stationary ring body has a transition seat protruding towards the rotating accommodating cavity in the middle. The clearance hole is provided on the transition seat. The moving ring body has a movable hole that fits onto the transition seat. The movable hole and the transition seat are sealed together by a second sealing structure.

7. The paper mold wet blank forming mechanism according to claim 6, characterized in that, The adapter seat has several sealing grooves along the axial direction on its outer periphery, and the second sealing structure is a sealing ring disposed in the sealing groove.

8. The paper mold wet blank forming mechanism according to claim 1, characterized in that, The suction hole is connected to a suction vacuum device via a suction pipe. The suction pipe is equipped with a suction control valve to control its working flow. The dewatering hole is connected to a dewatering vacuum device via a dewatering pipe. The dewatering pipe is equipped with a dewatering control valve to control its working flow. The air blowing hole is connected to an air blowing device via an air blowing pipe. The air blowing pipe is equipped with an air blowing control valve to control its working flow. The air blowing device controls its forward and reverse operation to enable the air blowing hole to perform air blowing demolding or dewatering and drying processes.

9. The paper mold wet blank forming mechanism according to claim 8, characterized in that, It also includes a slurry agitator, which is used to stir the slurry in the slurry chamber; the slurry agitator includes a stirring driver and a stirring paddle disposed in the slurry chamber, and the stirring driver is kinetically connected to the stirring paddle.

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