Paper mold wet blank forming mechanism with pressurizing function
By setting up a pressurized structure in the linear drive of the paper mold wet embryo forming mechanism, the problem of insufficient density and hardness of pulp crushing and forming in the prior art is solved, and better molding effect and product quality are achieved.
Patent Information
- Application Number
- CN202421267146.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing linear drivers of paper mold wet embryo forming mechanism lack the pressurization function, resulting in the density and hardness of pulp crushing and pressing forming not high enough, affecting the molding quality.
A paper mold wet embryo forming mechanism with boosting function was designed. By setting up a boosting structure in a linear drive, including a pressurized cylinder, a middle seal solenoid valve and a single solenoid valve, the gas source system is used to provide boosting gas , increase the pressure force on paper mold wet embryos.
Through the use of the pressurized structure, the density and hardness of the pulp wet embryo during compression molding is improved, and the molding effect and product quality are improved.
Smart Images
Figure CN222434956U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hot pressing processing of paper molds, and in particular relates to a paper mold wet embryo forming mechanism with a pressurizing function. Background Art
[0002] Pulp molding is a three-dimensional papermaking technology. It uses waste paper as raw material and uses special molds on a molding machine to shape paper products of a certain shape. Its production process is completed by pulping, adsorption molding, drying and shaping, etc. It is harmless to the environment and can be recycled. In addition to making lunch boxes and tableware, pulp molding is also used for industrial cushioning packaging to improve the recycling rate of waste paper resources.
[0003] The process of making pulp molding generally requires wet blank forming, drying, hot pressing and trimming. After the forming process, the wet blank of the paper mold will be slightly deformed after drying, and needs to be dehumidified by water spraying, and then hot pressing and shaping to make the surface of the paper mold smooth and beautiful, and finally cut off the burrs. For the existing wet blank forming mechanism of paper molds, the two linear actuators that drive the lifting and lowering movement of the movable mold assembly are generally pneumatic push rods. During the process of closing the movable mold assembly with the fixed mold assembly, the pulp shreds in the inner cavity of the movable mold are pressed and formed. However, the linear actuator using pneumatic push rods is prone to insufficient pressing force, resulting in insufficient density and hardness of the pressed pulp shreds, which affects the quality of wet blank forming. Utility Model Content
[0004] The utility model aims to overcome the problem that the linear drive of the existing paper mold wet embryo forming mechanism lacks a pressurizing function, which easily leads to insufficient density and hardness of the pulp shreds when compacted and formed, and provides a paper mold wet embryo forming mechanism with a pressurizing function.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A paper mold wet blank forming mechanism with a pressurizing function comprises a frame, a movable mold assembly, a fixed mold assembly and at least two linear actuators arranged on the frame, wherein the movable mold assembly can be slidably connected to the frame through a vertical guiding mechanism, and the linear actuator is used to drive the movable mold assembly to move in a vertical direction and to close or separate the mold relative to the fixed mold assembly, and the linear actuator comprises a movable rod and a cylinder body, and one side of the movable rod is circumferentially matched with the inner wall of the inner cavity of the cylinder body through a piston seal so that the inner cavity of the cylinder body is divided into a rod cavity and a rodless cavity, and the cylinder body is provided with a rod cavity interface connected to the rod cavity and a rodless cavity connected to the rodless cavity Rod cavity interface; also includes a boosting structure, the boosting structure includes a pressurizing cylinder, a center-sealed solenoid valve connected to an air source system and a single-electrically controlled solenoid valve connected to an air source system, the air delivery port of the pressurizing cylinder is connected to the rodless cavity interface of each linear drive, the single-electrically controlled solenoid valve is connected to the pressurizing cylinder and is used to control the pressurizing cylinder to pressurize or relieve the linear drive when it is in an extended state, the center-sealed solenoid valve is respectively connected to the rodless cavity interface and the rod cavity interface to perform a combined operation of ventilation or exhaust on the rod cavity and the rodless cavity, thereby controlling the movable rod of the linear drive to extend or reset.
[0007] Compared with the prior art, the paper mold wet embryo forming mechanism with a pressurizing function of the utility model further applies pressure when the linear drive is in an extended state by arranging a pressurizing structure, so that when the linear drive drives the movable mold assembly and the fixed mold assembly to close the mold, the pressurizing structure increases the pressing force on the paper mold wet embryo, thereby improving the density and hardness of the pulp wet embryo during compression molding, the pulp wet embryo molding effect is better, and the product quality reliability is good.
[0008] Furthermore, the linear drive is a hydraulic push rod or a pneumatic push rod, and the center-sealed solenoid valve is a five-port, three-position center-sealed solenoid valve. The center-sealed solenoid valve is provided with a first valve core and a second valve core located inside. When the first valve core is activated, the movable rod of the linear drive is extended by fluid transmission. When the second valve core is activated, the movable rod of the linear drive is reset by fluid transmission. Through such an arrangement, the center-sealed solenoid valve is simply arranged and the transmission linear drive has a good working effect.
[0009] Furthermore, when the first valve core of the center-sealed solenoid valve is started, the rodless chamber is ventilated and the rod chamber is exhausted at the same time, so that the movable rod of the linear drive is extended, or, when the second valve core is started, the rod chamber is ventilated and the rodless chamber is exhausted at the same time, so that the movable rod of the linear drive is reset; through such an arrangement, the linear drive is linked to work by the effect of gas transmission, and the transmission effect is good.
[0010] Furthermore, the single solenoid valve and the center-sealed solenoid valve are respectively connected to the two-piece connection; through such an arrangement, the single solenoid valve and the center-sealed solenoid valve can effectively filter the moisture in the air in the recovered transmission gas to prevent impurities such as water vapor from entering the pneumatic system.
[0011] Furthermore, a pressure reducing valve is connected between the single electrically controlled solenoid valve and the two-piece connection; by such an arrangement, the pressure reducing valve can effectively control the pressure of the gas transported by the pipeline, thereby ensuring the safety and reliability of gas transportation and use.
[0012] Furthermore, it also includes a synchronization structure, which includes a synchronization rod and two groups of mutually meshing gears and racks at least located on both sides of the frame, the racks are arranged along the direction of the vertical guide mechanism, the gears are respectively arranged on the synchronization rod, and the two ends of the synchronization rod are rotatably connected to the movable mold assembly. When the linear drive drives the movable mold assembly to move back and forth, each gear respectively meshes along the length direction of the corresponding rack; through such an arrangement, the movable mold assembly can be slidably connected to the frame through the vertical guide mechanism, and a synchronization mechanism is configured for the movable mold assembly, the synchronization mechanism includes two groups of racks respectively connected to the frame and gears connected to the movable mold assembly, while the movable mold assembly is lifting and lowering, the gears move along the racks in a meshing motion, and the movable mold assembly is limited to maintain vertical movement by the meshing of two groups of gear teeth, so as to avoid the phenomenon of lateral slight deflection of the movable mold assembly, and ensure that the thickness of the wet paper mold formed when the movable mold assembly is closed is consistent as a whole, thereby improving the reliability of product production. .
[0013] Furthermore, key grooves are respectively provided on the outer sides of both sides of the synchronization rod, and the two key grooves are respectively arranged in the same radial direction of the synchronization rod and are located on the same straight line along the length direction; through such an arrangement, the teeth of the two gears are consistent along each radial direction, ensuring the synchronization of the two gears when rotating.
[0014] Furthermore, it also includes a slide arranged at the output end of the linear drive, the vertical guiding mechanism includes a guide sleeve arranged on the frame and a guide column of the sliding sleeve arranged on the guide sleeve, and the guide column is respectively connected to the slide and the movable mold assembly; the movable mold assembly is located on the lower side of the fixed mold assembly. Through such an arrangement, the linear drive indirectly drives the movable mold assembly to perform lifting movement on the lower side of the fixed mold assembly by arranging the slide, and the structure is compact.
[0015] Furthermore, both ends of the synchronization rod are rotatably connected to the slide through bearing seats, the slide is provided with an elongated hole arranged along the direction of the rack, the bearing seat is provided with a connecting hole matched with the elongated hole, and the bearing seat is adjustably connected to the slide along the direction of the elongated hole; through such an arrangement, the synchronization rod can be fine-tuned when installed through the bearing seat, ensuring that the gear and the rack are better meshed through fine-tuning.
[0016] Furthermore, the linear drive is provided with two groups, and the gears and racks are provided with two groups correspondingly, and the gears are arranged on a side close to the corresponding linear drive; through such an arrangement, the gears are arranged close to the corresponding linear drive, so that the meshing operation effect of the gears and racks is better.
[0017] Furthermore, a movable mold cavity is provided on the top of the movable mold assembly, and the movable mold assembly is equipped with a liquid adsorption mechanism connected to the movable mold cavity; through such an arrangement, after the movable mold assembly extracts slurry from the slurry pool, the liquid therein can be absorbed by the liquid adsorption mechanism to form a wet paper mold embryo.
[0018] Furthermore, a fixed mold cavity is provided at the bottom of the fixed mold assembly, and the fixed mold assembly is equipped with a vacuum adsorption mechanism and a paper mold blowing mechanism connected to the fixed mold cavity; through such an arrangement, the fixed mold assembly has the functions of vacuum adsorption and blowing to release the paper mold, which facilitates the fixed mold assembly to adsorb and release the paper mold.
[0019] Furthermore, it also includes a transverse slide device and a transverse driver arranged on the frame, the fixed mold assembly is slidably arranged on the frame through the transverse slide device, and the transverse driver is used to drive the fixed mold assembly to extend relatively to the outside or reset to the upper side of the movable mold assembly; through such an arrangement, the fixed mold assembly has the function of vacuum adsorption and blowing to release the paper mold, and cooperates with the transverse driver to drive the fixed mold assembly to move, so that the fixed mold assembly has the function of transferring the position of the paper mold, which is convenient for the unloading work after the wet mold of the paper mold is formed. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the paper mold wet embryo forming mechanism with pressurization function Figure 1 .
[0021] Figure 2 Schematic diagram of the paper mold wet embryo forming mechanism with pressurization function Figure 2 .
[0022] Figure 3 Schematic diagram of the paper mold wet embryo forming mechanism with pressurization function Figure 3 .
[0023] Figure 4 for Figure 3 A partial enlarged view of area A.
[0024] Figure 5 Schematic diagram of the paper mold wet embryo forming mechanism with pressurization function Figure 4 .
[0025] Figure 6 for Figure 5 The partial view of area B in the middle is the larger picture.
[0026] Figure 7 Schematic diagram of the supercharger structure DETAILED DESCRIPTION
[0027] The specific implementation of the present invention is described below in conjunction with the accompanying drawings. In the description of the present invention, 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 the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0028] See also Figures 1 to 7 The paper mold wet embryo forming mechanism with a pressurizing function of the utility model comprises a frame 1, a movable mold assembly 2, a fixed mold assembly 3 and at least two linear drivers 4 arranged on the frame 1, the movable mold assembly 2 can be slidably connected to the frame 1 through a vertical guiding mechanism, the linear driver 4 is used to drive the movable mold assembly 2 to move in the vertical direction and to close or separate the mold with the fixed mold assembly 3, the linear driver 4 comprises a movable rod and a cylinder body, one side of the movable rod is circumferentially matched with the inner wall of the inner cavity of the cylinder body through a piston seal so that the inner cavity of the cylinder body is divided into a rod cavity (not shown in the figure) and a rodless cavity (not shown in the figure), the cylinder body is provided with a rod cavity interface 42 connected to the rod cavity and a rodless cavity connected to the rodless cavity cavity interface 41; it also includes a boosting structure 6, the boosting structure 6 includes a pressurizing cylinder 61, a center-sealed solenoid valve 62 connected to an air source system and a single-electrically controlled solenoid valve 63 connected to an air source system, the air delivery port 611 of the pressurizing cylinder 61 is connected to the rodless cavity interface 41 of each linear drive 4, the single-electrically controlled solenoid valve 63 is connected to the pressurizing cylinder 61 and is used to control the pressurizing cylinder 61 to pressurize or relieve the linear drive 4 when it is in the extended state, the center-sealed solenoid valve 62 is respectively connected to the rodless cavity interface 41 and the rod cavity interface 42, so as to perform a combined operation of ventilation or exhaust on the rod cavity and the rodless cavity, thereby controlling the movable rod of the linear drive 4 to extend or reset.
[0029] Compared with the prior art, the paper mold wet embryo forming mechanism with a pressurizing function of the utility model further pressurizes the linear drive 4 when it is in the extended state by setting a pressurizing structure 6, so that when the linear drive 4 drives the movable mold assembly 2 and the fixed mold assembly 3 to close the mold, the pressurizing structure 6 increases the pressing force on the paper mold wet embryo, thereby improving the density and hardness of the pulp wet embryo during compression molding, the pulp wet embryo molding effect is better, and the product quality reliability is good.
[0030] The above-mentioned "the center-sealed solenoid valve 62 is respectively connected with the rodless chamber interface 41 and the rod chamber interface 42 to perform a combined operation of ventilation or exhaust of the rod chamber and the rodless chamber, thereby controlling the movable rod of the linear actuator 4 to extend or reset". The specific implementation method is: the center-sealed solenoid valve 62 exhausts the rod chamber while ventilating the corresponding rodless chamber, and the movable rod of the linear actuator 4 is extended; and the center-sealed solenoid valve 62 ventilates the rod chamber while exhausting the corresponding rodless chamber, and the movable rod of the linear actuator 4 is reset.
[0031] See also Figure 7 In one embodiment, the linear drive 4 is a hydraulic push rod or a pneumatic push rod, and the center-sealed solenoid valve 62 is a five-port three-position center-sealed solenoid valve 62. The center-sealed solenoid valve 62 is provided with a first valve core (not shown) and a second valve core (not shown) located inside. When the first valve core is activated, the movable rod of the linear drive 4 is extended by the fluid transmission. When the second valve core is activated, the movable rod of the linear drive 4 is reset by the fluid transmission. Through such a setting, the center-sealed solenoid valve 62 is simply set and the working effect of the transmission linear drive 4 is good.
[0032] See also Figure 7 In one embodiment, when the first valve core of the center-sealed solenoid valve 62 is started, the rodless chamber is ventilated while the rod chamber is exhausted, so that the movable rod of the linear drive 4 is extended, or, when the second valve core is started, the rod chamber is ventilated while the rodless chamber is exhausted, so that the movable rod of the linear drive 4 is reset; through such a setting, the linear drive 4 is linked to work by the effect of gas transmission, and the transmission effect is good.
[0033] See also Figure 7 In one embodiment, the single solenoid valve 63 and the center-sealed solenoid valve 62 are respectively connected to the two-piece connection; through such a configuration, the single solenoid valve 63 and the center-sealed solenoid valve 62 can effectively filter the moisture in the air in the recovered transmission gas to prevent impurities such as water vapor from entering the pneumatic system.
[0034] See also Figure 7 In one embodiment, a pressure reducing valve 64 is connected between the single electrically controlled solenoid valve 63 and the two-piece connection; by setting up the pressure reducing valve 64, the pressure of the gas transported by the pipeline can be effectively controlled to ensure the safety and reliability of gas transportation and use.
[0035] In one embodiment, the single solenoid valve 63 and the pressurizing cylinder 61 can be selected from the single solenoid valve 63 in the prior art. Figure 7, and the pressurizing cylinder 61, the single-electrically controlled solenoid valve 63, when energized, drives the valve core to move and delivers the fluid to one side of the pressurizing cylinder 61, thereby driving the fluid in the pressurizing cylinder 61 to flow into the linear drive 4 to achieve the pressurization effect. The specific principle of the single-electrically controlled solenoid valve 63 is: the working principle of the single-electrically controlled solenoid valve 63 mainly involves the interaction between the electromagnetic coil and the valve body. When the electromagnetic coil is energized, the electromagnetic force generated will push the valve core to move and realize the driving of the fluid. When the single-electrically controlled solenoid valve 63 is powered off, due to the action of the spring, the valve core will remain in the initial position to achieve the reset and reflux of the fluid, and when powered on, the electromagnetic force will overcome the spring force and move the valve core to a new position, thereby changing the flow of the fluid in the forward and reverse directions to achieve the control function.
[0036] See also Figure 7 In one embodiment, the center-sealed solenoid valve 62 can use a five-port three-position center-sealed solenoid valve 62 in the prior art. The specific setting of the center-sealed solenoid valve 62 can be connected to an air inlet and two exhaust ports of the air source system and to the rodless cavity interface 41 and the rod cavity interface 42 of the linear actuator 4. The center-sealed solenoid valve 62 can control the inner fluid to ventilate the rodless cavity and exhaust the rod cavity through the first valve core and the second valve core inside, so as to extend the movable rod of the linear actuator 4. Alternatively, when the second valve core is started, the rodless cavity is ventilated and the movable rod of the linear actuator 4 is reset. The work of the center-sealed solenoid valve 62 controlling the linear actuator 4 to extend or reset belongs to the conventional technical means in the field and is not the innovative technical point of the present invention. The innovative technical point of the present invention is to apply the existing pressurization technical means of the linear actuator 4 to the paper mold wet embryo forming mechanism to solve the technical problem of improving the quality of the paper mold wet embryo.
[0037] See also Figure 1As shown in the figure, in one embodiment, a synchronization structure is further included, the synchronization structure includes a horizontally arranged synchronization rod 53 and two sets of mutually meshing gears 51 and racks 52 located at least on both sides of the frame 1, the racks 52 are arranged along the direction of the vertical guide mechanism, the gears 51 are respectively arranged on the synchronization rod 53, and the two ends of the synchronization rod 53 are rotatably connected to the movable mold assembly 2. When the linear drive 4 drives the movable mold assembly 2 to move back and forth, each gear 51 respectively performs a meshing movement along the length direction of the corresponding rack 52. By such arrangement, the movable mold assembly 2 can be slidably connected to the frame 1 through the vertical guiding mechanism, and a synchronization mechanism is configured for the movable mold assembly 2, the synchronization mechanism comprising two groups of racks 52 respectively connected to the frame 1 and a gear 51 connected to the movable mold assembly 2. When the movable mold assembly 2 is lifted and lowered, the gear 51 moves along the rack 52 in a meshing motion. The two groups of gear teeth are meshed to limit the movable mold assembly 2 to maintain vertical movement, thereby avoiding the phenomenon of slight lateral deflection of the movable mold assembly 2, ensuring that the thickness of the wet paper mold formed when the movable mold assembly 2 is closed is consistent as a whole, thereby improving the reliability of product production.
[0038] In one embodiment, key grooves (not shown) are respectively provided on the outer sides of the synchronization rod 53, and the two key grooves are respectively arranged in the same radial direction of the synchronization rod 53 and the two are located on the same straight line along the length direction; through such an arrangement, the teeth of the two gears 51 are consistent along each radial direction, ensuring the synchronization of the two gears 51 when rotating.
[0039] join Figures 1 to 5 In one embodiment, it also includes a slide 11 arranged at the output end of the linear drive 4, the vertical guiding mechanism includes a guide sleeve 12 arranged on the frame 1 and a guide column 13 whose sliding sleeve is arranged on the guide sleeve 12, and the guide column 13 is respectively connected to the slide 11 and the movable mold assembly 2; the movable mold assembly 2 is located at the lower side of the fixed mold assembly 3, the slide 11 is connected to the upper end of the guide column 13, and the movable mold assembly 2 is connected to the lower end of the guide column 13. Through such an arrangement, the linear drive 4 is indirectly driven by the slide 11 to perform lifting and lowering movements on the lower side of the fixed mold assembly 3, and the structure is compact.
[0040] join Figures 2 to 5In one embodiment, both ends of the synchronization rod 53 are rotatably connected to the slide 11 through bearing seats 54 respectively. The slide 11 is provided with an elongated hole (not shown) arranged along the direction of the rack 52. The bearing seat 54 is provided with a connecting hole (not shown) matched with the elongated hole. The connecting hole is connected to the elongated hole through a connecting member such as a screw, and the bearing seat 54 is adjustably connected to the slide 11 along the direction of the elongated hole. Through such an arrangement, the synchronization rod 53 can be fine-tuned when installed through the bearing seat 54, ensuring that the gear 51 and the rack 52 are better meshed through fine-tuning.
[0041] join Figures 1 to 5 In one embodiment, the linear drive 4 is provided with two groups, and the linear drive 4 is preferably a pneumatic cylinder or an oil cylinder. The gear 51 and the rack 52 are provided with two groups respectively, and the gear 51 is arranged on a side close to the corresponding linear drive 4; through such an arrangement, the gear 51 is arranged close to the corresponding linear drive 4, so that the meshing operation effect of the gear 51 and the rack 52 is better.
[0042] join Figures 1 to 6 In one embodiment, a movable mold cavity 21 is provided on the top of the movable mold assembly 2, and the movable mold assembly 2 is equipped with a liquid adsorption mechanism 22 connected to the movable mold cavity 21; through such a configuration, the movable mold assembly 2 can absorb the liquid in the slurry through the liquid adsorption mechanism 22 after extracting the slurry from the slurry pool to form a wet paper mold embryo.
[0043] join Figures 1 to 6 In one embodiment, a fixed mold cavity 31 is provided at the bottom of the fixed mold assembly 3, and the fixed mold assembly 3 is equipped with a vacuum adsorption mechanism (not shown) and a paper mold blowing mechanism (not shown) connected to the fixed mold cavity 31; through such an arrangement, the fixed mold assembly 3 has the functions of vacuum adsorption and blowing to release the paper mold, which facilitates the fixed mold assembly 3 to adsorb and release the paper mold.
[0044] join Figures 1 to 6 In one embodiment, it also includes a transverse slide device 14 and a transverse driver 25 provided on the frame 1, wherein the transverse driver 25 is, for example, a push rod, and the fixed mold assembly 3 is slidably provided on the frame 1 through the transverse slide device 14, and the transverse driver 25 is used to drive the fixed mold assembly 3 to extend relatively to the outside or reset to the upper side of the movable mold assembly 2; through such a setting, the fixed mold assembly 3 has the function of vacuum adsorption and blowing to release the paper mold, and cooperates with the transverse driver 25 to drive the fixed mold assembly 3 to move, so that the fixed mold assembly 3 has the function of transferring the position of the paper mold, which is convenient for the unloading work after the wet mold of the paper mold is formed.
[0045] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.
Claims
1. A paper mold wet blank forming mechanism with a pressurizing function, comprising a frame, a movable mold assembly, a fixed mold assembly and at least two linear actuators arranged on the frame, wherein the movable mold assembly is slidably connected to the frame through a vertical guide mechanism, and the linear actuator is used to drive the movable mold assembly to move in a vertical direction and to close or separate the mold relative to the fixed mold assembly, characterized in that ； The linear drive comprises a movable rod and a cylinder body, wherein one side of the movable rod is circumferentially matched with the inner wall of the inner cavity of the cylinder body through a piston seal so that the inner cavity of the cylinder body is divided into a rod cavity and a rodless cavity, and the cylinder body is provided with a rod cavity interface connected to the rod cavity and a rodless cavity interface connected to the rodless cavity; It also includes a boosting structure, which includes a pressurizing cylinder, a center-sealed solenoid valve connected to an air source system, and a single-electrically controlled solenoid valve connected to the air source system. The air delivery port of the pressurizing cylinder is connected to the rodless cavity interface of each linear actuator. The single-electrically controlled solenoid valve is connected to the pressurizing cylinder and is used to control the pressurizing cylinder to boost or relieve pressure on the linear actuator when it is in an extended state. The center-sealed solenoid valve is respectively connected to the rodless cavity interface and the rod cavity interface to perform a combined operation of ventilation or exhaust on the rod cavity and the rodless cavity, thereby controlling the movable rod of the linear actuator to extend or reset.
2. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 1 is characterized in that: The linear drive is a hydraulic push rod or a pneumatic push rod, and the center-sealed solenoid valve is a five-port, three-position center-sealed solenoid valve. The center-sealed solenoid valve is provided with a first valve core and a second valve core located inside. When the first valve core is activated, the movable rod of the linear drive is extended through the fluid transmission. When the second valve core is activated, the movable rod of the linear drive is reset through the fluid transmission.
3. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 2 is characterized in that: When the first valve core of the center-sealed solenoid valve is started, the rodless chamber is ventilated and the rod chamber is exhausted at the same time, so that the movable rod of the linear drive is extended. Alternatively, when the second valve core is started, the rod chamber is ventilated and the rodless chamber is exhausted at the same time, so that the movable rod of the linear drive is reset.
4. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 1, characterized in that: The single electric control solenoid valve and the center sealing solenoid valve are respectively connected to the two-connection piece.
5. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 3 is characterized in that: A pressure reducing valve is connected between the single electric control solenoid valve and the second connecting piece.
6. The paper mold wet embryo forming mechanism with a pressurizing function according to any one of claims 1 to 5, characterized in that: It also includes a synchronization structure, which includes a synchronization rod and two groups of mutually meshing gears and racks located at least on both sides of the frame, the racks are arranged along the direction of the vertical guide mechanism, the gears are respectively arranged on the synchronization rod, and the two ends of the synchronization rod are rotatably connected to the movable mold assembly. When the linear drive drives the movable mold assembly to reciprocate, each gear performs meshing movement along the length direction of the corresponding rack.
7. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 6, characterized in that: Key grooves are respectively arranged on the outer sides of both sides of the synchronization rod. The two key grooves are respectively arranged in the same radial direction of the synchronization rod and are located on the same straight line along the length direction.
8. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 6, characterized in that: It also includes a slide arranged at the output end of the linear drive, and the vertical guiding mechanism includes a guide sleeve arranged on the frame and a guide column of the sliding sleeve arranged on the guide sleeve, and the guide column is respectively connected to the slide and the movable mold assembly.
9. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 8, characterized in that: The two ends of the synchronization rod are rotatably connected to the slide through bearing seats. The slide is provided with an elongated hole arranged along the direction of the rack. The bearing seat is provided with a connecting hole that cooperates with the elongated hole. The bearing seat is adjustably connected to the slide along the direction of the elongated hole.
10. The paper mold wet embryo forming mechanism with a pressurizing function according to claim 6, characterized in that: The linear drive is provided with two groups, and the gears and racks are provided with two groups correspondingly, and the gears are arranged on a side close to the corresponding linear drive; The movable mold assembly is located at the lower side of the fixed mold assembly.