Paper-mold green-forming apparatus

Abstract

The utility model belongs to paper mould wet blank forming technical field, the paper mould wet blank forming equipment of the utility model passes through adopting the structure that drive motor is connected with the direct drive of pivot, and combines encoder real -time monitoring pivot rotation data, effectively eliminated the clearance virtual position and angle deviation problem existing in traditional belt drive, improved the position precision of each gas hole butt joint on the dynamic ring body and static ring body obviously, thereby ensured the accuracy and stability of airflow passage butt joint in the process of absorbing pulp, dehydration and blowing demoulding, made paper mould wet blank forming wall thickness even, weight consistent, greatly promoted product yield and quality stability, simultaneously equipment transmission rigidity is good, response is quick, is favorable to realization high -speed continuous production's precision control.

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 equipment. Background Technology

[0002] Pulp molding is a green and environmentally friendly product made from fully recyclable plant fiber pulp or waste paper as the base material. It is widely used in tableware, appliance packaging, seedling cultivation, craft bases, and fragile item lining packaging, and is currently the best alternative to foam plastic products. In the production process of pulp molding products, wet preform forming is one of the key steps, and its quality directly affects the weight, wall thickness consistency, and yield of the final molded product.

[0003] In existing technologies, such as the "Paper Mold Wet Blank Forming System and a Paper Mold Wet Blank Forming Equipment" disclosed in Chinese Patent CN108316059A, continuous forming of paper mold wet blanks is achieved by setting up a frame, a rotating shaft, a dynamic and static ring structure, and a mold fixing mechanism. The dynamic and static ring structure includes a static ring body and a dynamic ring body. The static ring body is provided with a slurry suction chamber, a dewatering chamber, and a blowing chamber. The dynamic ring body rotates with the rotating shaft, causing the airflow channel of the mold fixing mechanism to sequentially connect with the three chambers, completing the slurry suction, dewatering, and blowing demolding processes.

[0004] However, the existing dynamic and static ring structure has the following shortcomings. Since the drive motor is connected to the rotating shaft via a transmission belt, there is a certain gap between the transmission belt and the pulley of the rotating shaft, resulting in insufficient positional accuracy when the shaft rotates. For example, the drive motor drives the rotating shaft to rotate 180 degrees, but the actual rotation angle of the rotating shaft is only 179.8 degrees. This results in incomplete rotation between the dynamic and static ring structures. This slight angular deviation will cause the mold fixing mechanism on the dynamic ring to misalign when it rotates to align with the air cavities (slurry suction cavity, dehydration cavity, and blowing cavity) on the static ring. This leads to problems such as uneven slurry suction, insufficient dehydration, or incomplete blow-out demolding, which will affect the wall thickness consistency and product weight stability of the wet blank. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that the driving method of relative rotation between the moving ring and the stationary ring in the existing paper mold wet blank forming system is not accurate enough in terms of position during operation, which affects the quality of paper mold wet blank forming. The invention provides a paper mold wet blank forming device with accurate driving accuracy of relative rotation between the moving ring and the stationary ring.

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

[0007] The paper mold wet blank forming equipment includes a frame, a paper mold blank forming module, an air duct switching mechanism, an encoder, and a drive device.

[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 the frame and a moving ring body mounted on the rotating shaft. The stationary ring body has a rotating receiving cavity with a circular opening on the front side. The rotating receiving cavity has a suction hole, a dewatering hole and an air blowing hole. The moving ring body is mounted in the receiving cavity and can rotate relative to the stationary ring body when the rotating shaft rotates.

[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] An encoder has a rotating shaft equipped with an encoding gear. The encoder wheel is connected to the encoding gear via a transmission belt. The encoder is used to acquire rotational working data of the rotating shaft.

[0013] The drive unit includes a drive motor and a transmission, with the drive motor directly connected to the shaft via the transmission.

[0014] Compared with existing technologies, the paper mold wet blank forming equipment of this utility model adopts a structure in which the drive motor and the rotating shaft are directly connected, and combined with the encoder to monitor the rotation data of the rotating shaft in real time. This effectively eliminates the gap and angular deviation problems of traditional belt drives, and significantly improves the positional accuracy of the connection of each air hole on the moving ring and the stationary ring. This ensures the accuracy and stability of the airflow channel connection during the suction, dewatering and blowing demolding processes, making the paper mold wet blank form with uniform wall thickness and consistent weight, greatly improving the product yield and quality stability. At the same time, the equipment has good transmission rigidity and fast response, which is conducive to the precise control of high-speed continuous production.

[0015] Furthermore, the rotational working data includes the angular velocity and number of rotations of the shaft, and the transmission is a reducer. With this configuration, the encoder monitors the angular velocity and number of rotations of the shaft in real time, and the reducer is used for precise speed adjustment and torque amplification, achieving comprehensive and precise control of the shaft rotation process. This effectively avoids slurry disturbance or billet deformation caused by speed and position deviations, thereby improving the accuracy and consistency of wet billet forming while enhancing the stability and adaptability of equipment operation.

[0016] Furthermore, the suction hole, dewatering hole, and air blowing hole are disposed on the bottom wall of the rotating accommodating cavity and arranged axially. By integrating the suction hole, dewatering hole, and air blowing hole into the bottom wall of the rotating accommodating cavity and arranging them axially, the internal air passage structure of the stationary ring is more compact, effectively shortening the airflow path and reducing pressure loss. At the same time, it enhances the alignment, sealing, and reliability of the moving ring with each air hole during rotation switching, thereby improving the stability and efficiency of the suction, dewatering, and air blowing demolding processes.

[0017] Furthermore, the outer periphery of the moving ring body is provided with several first sealing structures arranged axially. The moving ring body is sealed to the circumferential inner wall of the rotating accommodating cavity through these first sealing structures. By setting up such a configuration, the first sealing structures arranged axially on the outer periphery of the moving ring body form a reliable seal with the circumferential inner wall of the rotating accommodating cavity, effectively preventing crosstalk between the air paths (slurry suction, dewatering, and air blowing) at each station during switching. This ensures the stability and concentration of airflow pressure, thereby significantly improving the efficiency of slurry suction molding, dewatering, and the reliability of air blowing demolding.

[0018] Furthermore, the outer periphery of the moving ring body 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; with this arrangement, the first sealing structure is simple to set and the airtightness between the moving ring body and the stationary ring body is good.

[0019] 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 connected to the moving ring and the paper mold blank forming module in sequence. 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 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 in sequence, this layout is compact and stable. It effectively ensures 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.

[0020] Furthermore, the first and second connecting holes are symmetrically arranged on both sides of the moving ring body, the suction hole and the air blowing hole are correspondingly arranged on both sides of the stationary ring body, and the dewatering hole is located between the suction hole and the air blowing hole. 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.

[0021] Furthermore, the dehydration hole is located in the waist-shaped arc 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 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.

[0022] 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.

[0023] Furthermore, the suction hole is connected to a suction vacuum device via a suction pipe, the dehydration hole is connected to a dehydration vacuum device via a dehydration pipe, and the air blowing hole is connected to an air blowing device via an air blowing pipe. With this configuration, the suction hole, dehydration hole, and air blowing hole are each independently equipped with a dedicated suction vacuum device, dehydration vacuum device, and air blowing device, respectively. This enables independent and precise control and rapid switching of the air paths 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, thereby reducing equipment costs and energy consumption. Attached Figure Description

[0024] Figure 1Schematic diagram of paper mold wet preform forming equipment Figure 1 .

[0025] Figure 2 Schematic diagram of paper mold wet preform forming equipment Figure 2 .

[0026] Figure 3 A schematic diagram showing the removal of the slurry tank from the paper mold wet blank forming equipment.

[0027] Figure 4 This is a schematic diagram of a stationary ring.

[0028] Figure 5 This is a schematic diagram of a moving ring.

[0029] 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 Reception Chamber 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

[0030] 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.

[0031] See Figures 1 to 5 The paper mold wet blank forming equipment of this utility model includes a frame 1, a paper mold blank forming module 2, an air channel switching mechanism 3, a slurry agitator 6, an encoder 7, and a drive device 8.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The slurry agitator 6 is used to stir the slurry chamber 12 inside the slurry chamber 12.

[0037] The encoder 7 has an encoder gear 71 on its rotating shaft 20. The rotating wheel of the encoder 7 is connected to the encoder gear 71 via a transmission belt 72. The encoder 7 is used to acquire the rotational working data of the rotating shaft 20.

[0038] The drive unit 8 includes a drive motor and a gearbox, with the drive motor directly connected to the rotating shaft 20 via the gearbox.

[0039] Compared with the prior art, the paper mold wet blank forming equipment of this utility model adopts a structure in which the drive motor is directly connected to the rotating shaft 20, and combines the encoder 7 to monitor the rotation data of the rotating shaft 20 in real time. This effectively eliminates the gap and angular deviation problems of traditional belt drive, and significantly improves the positional accuracy of the connection of each air hole on the moving ring 4 and the stationary ring 5. This ensures the accuracy and stability of the airflow channel connection during the suction, dewatering and blowing demolding processes, making the paper mold wet blank form with uniform wall thickness and consistent weight, greatly improving the product yield and quality stability. At the same time, the equipment has good transmission rigidity and fast response, which is conducive to the precise control of high-speed continuous production.

[0040] Furthermore, the paper mold wet blank forming equipment 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. This, combined with the first connecting hole 41 and the second connecting hole 42 axially connected on the moving ring 4, achieves air passage connection. This makes the entire air passage switching mechanism 3 more compact and thinner, facilitating equipment miniaturization and modular design. Simultaneously, the outer circumference of the moving ring 4 forms a multi-layered sealing fit with the circumferential inner wall of the rotating accommodating cavity 50 through several first sealing structures 43, significantly improving the sealing reliability and long-term operational stability during air passage switching. This effectively avoids the problem of decreased air tightness 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.

[0041] In one embodiment, the rotational working data includes the angular velocity and number of rotations of the rotating shaft 20, and the transmission is a reducer. With this configuration, the encoder 7 monitors the angular velocity and number of rotations of the rotating shaft 20 in real time, and the reducer is used for precise speed adjustment and torque amplification, thereby achieving comprehensive and precise control over the rotation process of the rotating shaft 20. This effectively avoids slurry disturbance or billet deformation caused by speed and position deviations, thereby improving the accuracy and consistency of wet billet forming while enhancing the stability and adaptability of equipment operation.

[0042] See Figures 1 to 5In 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] See Figures 1 to 5 In one embodiment, the outer periphery of the adapter 54 is provided with a plurality of sealing grooves (not shown in the figure) along the axial direction, and the second sealing structure 56 is a sealing ring provided 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.

[0048] See Figures 1 to 5In 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.

[0049] 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.

[0050] The encoder 7 is located on the side of the stationary ring 5 of the connecting seat 13.

[0051] In 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.

[0052] 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 equipment, 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 the frame and a rotating ring body mounted on the rotating shaft. The stationary ring body has a rotating receiving cavity with a circular opening on the front side. The rotating receiving cavity has a suction hole, a dewatering hole and an air blowing hole. The rotating ring body is mounted in the receiving cavity and can rotate relative to the stationary ring body when the rotating shaft rotates. 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. An encoder has a rotating shaft equipped with an encoding gear. The encoder wheel is connected to the encoding gear via a transmission belt. The encoder is used to acquire rotational working data of the rotating shaft. The drive unit includes a drive motor and a transmission, with the drive motor directly connected to the shaft via the transmission.

2. The paper mold wet blank forming equipment according to claim 1, characterized in that, The rotational operating data includes the angular velocity and number of rotations of the shaft, and the transmission is a speed reducer.

3. The paper mold wet blank forming equipment according to claim 2, characterized in that, The suction hole, dewatering hole and air blowing hole are disposed on the bottom wall of the rotating accommodating cavity and arranged along the axial direction; The moving ring body is provided with a plurality of first sealing structures arranged along the axial direction on its outer periphery, and the moving ring body is sealed to the circumferential inner wall of the rotating accommodating cavity through the plurality of first sealing structures.

4. The paper mold wet blank forming equipment according to claim 3, 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 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.

5. The paper mold wet blank forming equipment according to claim 4, 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, and the dewatering hole is located between the slurry suction hole and the air blowing hole.

6. The paper mold wet blank forming equipment according to claim 5, 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.

7. The paper mold wet blank forming equipment according to claim 4, 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.

8. The paper mold wet blank forming equipment according to claim 1, characterized in that, The suction hole is connected to a suction vacuum device via a suction pipe, the dewatering hole is connected to a dewatering vacuum device via a dewatering pipe, and the air blowing hole is connected to an air blowing device via an air blowing pipe.

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