Semi-automatic pulp molding shaping device and control method thereof

Abstract

The invention discloses a semi-automatic pulp molding shaping device and a control method thereof, and relates to the technical field of pulp molding. The invention overcomes the defect of uneven slurry concentration in a mold cavity of a molding machine by arranging four electromagnetic valves to switch a slurry spraying valve assembly, and simultaneously opening the electromagnetic valve switch slurry spraying valve assembly and a reverse water supply valve during a grouting process. After the grouting process is completed and a set time is waited, the invention opens a negative pressure vacuum butterfly valve and a drain valve, thereby eliminating foam on the surface of a pulp blank and ensuring the appearance quality of the product. After the pure water is completely absorbed, the invention does not immediately close the negative pressure vacuum butterfly valve and the drain valve, but moves the upper mold of the molding machine upward, and after the upper mold of the molding machine is separated from the mesh mold and the pulp blank, closes the negative pressure vacuum butterfly valve and the drain valve, thereby ensuring that when the upper mold of the molding machine moves upward, the pulp blank is firmly adsorbed on the mesh mold and is not adhered and pulled by the upper mold of the molding machine, thereby ensuring product quality.

Description

Technical Field

[0001] The invention relates to the technical field of pulp molding, in particular to a semi-automatic pulp molding shaping device and a control method thereof. Background Art

[0002] The existing automatic pulp molding and shaping device in the same industry is equipped with a forming cavity, an upper mold frame and an adjustable slurry doser. When working, open the slurry supply and air supply valve, start the button switch, and the PLC control system moves the piston of the booster cylinder downward according to the pre-set program, driving the upper mold frame to descend and match the positioning of the forming cavity. Then the slurry from the adjustable slurry doser is automatically and quantitatively injected into the forming cavity, and the slurry injection is completed. The vacuum automatic valve opens, and the vacuum system removes the water from the slurry in the forming cavity. At the same time, the pulp is evenly adsorbed on the forming cavity to form a product blank. After the product blank is formed, the vacuum valve will automatically close, and then the electromagnetic reversing valve will open immediately. After the forming cylinder drives the upper mold frame to rise and open, the operator takes out the formed tableware blank and directly transfers to the next process-hot pressing and shaping curing process. After the product is dried, the hot pressing and shaping curing process will automatically start, and then the operator takes out the tableware product.

[0003] The existing machine produces a lot of foam after grouting, which will make the product appearance quality poor after vacuuming immediately, and the upper mold frame will be pulled when lifting the product blank, which will cause the weight of the product to deviate and the wall thickness of the same product to be different. Therefore, the existing machine has a low yield rate, and the overall appearance quality, product hardness, and waterproof and oil-proof performance of the product are poor. Summary of the invention

[0004] The purpose of the present invention is to provide a semi-automatic pulp molding and shaping device and a control method thereof, which utilizes original ecological pulp to be hot-extruded and solidified into disposable environmentally friendly paper tableware in one time, thereby solving the technical defects existing in the above-mentioned plastic tableware production process.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A semi-automatic pulp molding shaping device comprises a shaping machine, a forming machine and a PLC controller; wherein:

[0007] The gas-liquid booster cylinder of the setting machine is fixed to the upper plate of the setting machine by bolts, and the moving plate of the setting machine is threadedly fastened with the piston rod of the gas-liquid booster cylinder of the setting machine through the connection shaft of the setting machine; the upper heating plate of the setting machine and the upper mold of the setting machine are fastened to the moving plate of the setting machine by a clamping fixture, so that the moving plate of the setting machine, the upper heating plate of the setting machine and the upper mold of the setting machine become an assembly; the lower mold of the setting machine and the lower heating plate of the setting machine are fastened to the lower bottom plate of the setting machine by a clamping fixture, and the lower bottom plate of the setting machine is fastened to the bottom frame of the setting machine; the upper plate of the setting machine is connected to the lower bottom plate of the setting machine by multiple guide shafts of the setting machine to form a fixed assembly, so that the assembly composed of the moving plate of the setting machine, the upper heating plate of the setting machine and the upper mold of the setting machine can perform up and down mold closing action along the guide shaft of the setting machine under the push of the gas-liquid booster cylinder of the setting machine;

[0008] The gas-liquid booster cylinder of the molding machine is fastened to the upper bracket of the molding machine by bolts, the basket lifting assembly is fastened with the piston rod of the gas-liquid booster cylinder of the molding machine by threading through the molding machine connecting shaft, the upper mold of the molding machine is fastened to the basket lifting assembly by bolts, the lower mold of the molding machine and the aluminum middle frame are fixed to the bottom frame of the molding machine, the mesh is placed in the lower mold of the molding machine, and the slurry funnel is arranged below the aluminum middle frame; under the action of the gas-liquid booster cylinder of the molding machine, the basket lifting plate of the basket lifting assembly, the aluminum middle frame and the slurry funnel form a slurry cavity; the upper bracket of the molding machine is connected to the bottom frame of the molding machine by multiple molding machine guide shafts to form a fixed combination, so that the basket lifting assembly can perform upper and lower mold clamping actions along the molding machine guide shafts under the push of the molding machine gas-liquid booster cylinder;

[0009] One end of the slurry inlet main pipeline is connected to the external main slurry pool, and the other end of the slurry inlet main pipeline is respectively connected to the first slurry metering cup and the second slurry metering cup fixed on the upper bracket of the molding machine through the slurry inlet port, the first slurry metering cup is connected to the two solenoid valve switch spraying valve assemblies, and the second slurry metering cup is connected to the two solenoid valve switch spraying valve assemblies; one end of the drain valve and one end of the reverse water supply valve are both connected to the slurry funnel, the other end of the reverse water supply valve is connected to the external pure water main pipeline, the other end of the drain valve is connected to the vacuum tank placed on one side of the molding machine chassis, one end of the drainage pneumatic butterfly valve and one end of the negative pressure vacuum butterfly valve are both connected to the vacuum tank, the other end of the negative pressure vacuum butterfly valve is connected to the external negative pressure main pipeline, and the other end of the drainage pneumatic butterfly valve is connected to the external underground return water main pipeline;

[0010] The PLC controller is installed on the upper bracket of the forming machine, and the PLC controller has built-in delayed vacuum suction program, timed quantitative grouting program and water-slurry simultaneous supply program; the PLC controller is electrically connected to the gas-liquid booster cylinder of the setting machine, the gas-liquid booster cylinder of the forming machine, the solenoid valve switch spraying valve assembly, the reverse water supply valve, the negative pressure vacuum suction butterfly valve, the drain valve, and the drainage pneumatic butterfly valve.

[0011] Optionally, the first slurry metering cup and the second slurry metering cup are both provided with an overflow port, and the overflow port is connected to an external main slurry pool through an overflow return slurry main pipeline; under the action of pump pressure, the slurry enters the first slurry metering cup and the second slurry metering cup respectively through the slurry inlet main pipeline, and when the slurry in the first slurry metering cup and / or the second slurry metering cup reaches the overflow port, the slurry circulates through the overflow return slurry main pipeline and merges into the main slurry pool.

[0012] Optionally, a balancing gas valve connected to the vacuum tank is installed on the vacuum tank, and the balancing gas valve is also electrically connected to the PLC controller.

[0013] Optionally, a sealing foam plate is installed in the upper mold of the molding machine.

[0014] Optionally, the semi-automatic pulp molding and shaping device is also provided with a distribution box; the distribution box supplies power to the PLC controller.

[0015] Optionally, the gas-liquid booster cylinder of the setting machine is a 30-ton gas-liquid booster cylinder; the gas-liquid booster cylinder of the molding machine is a 15-ton gas-liquid booster cylinder.

[0016] Optionally, an oil-water separator and an auxiliary cylinder are also provided on one side of the gas-liquid booster cylinder of the stentering machine.

[0017] Optionally, the molding machine further comprises an upper molding machine shield; the upper molding machine shield is fixedly connected to an upper plate of the molding machine via an upper molding machine shield bracket.

[0018] Optionally, the number of the guide shafts of the setting machine and the guide shaft of the forming machine are both 4, and the number of the drain valves is 2.

[0019] A control method for a semi-automatic pulp molding shaping device, comprising:

[0020] The PLC controller controls the air-liquid booster cylinder of the molding machine to drive the basket assembly downward along the guide shaft of the molding machine, so that the basket assembly, the aluminum middle frame, and the slurry funnel form a slurry cavity, and at the same time starts the water slurry simultaneous supply program and the timed quantitative grouting program, and opens the solenoid valve to switch the spraying valve assembly and the reverse water supply valve;

[0021] When the slurry in the slurry funnel reaches the set slurry volume, the solenoid valve switch spray valve assembly and the reverse water supply valve are closed; the delayed vacuum suction program is started, and after waiting for the set time, the negative pressure vacuum suction butterfly valve and the drain valve are opened at the same time, and the vacuum tank instantly forms a negative pressure, and the pure water in the slurry funnel is pumped into the vacuum tank, leaving the slurry blank in the mesh;

[0022] The PLC controller drives the basket assembly to move upward along the guide shaft of the molding machine by controlling the gas-liquid booster cylinder of the molding machine. When the basket assembly reaches the specified position, the mesh and the slurry are taken out, the negative pressure vacuum butterfly valve and the drain valve are closed, and then the balance air valve and the drainage pneumatic butterfly valve are opened to allow the pure water in the vacuum tank to flow into the underground water return main pipeline;

[0023] The removed mesh and the blank are placed into the lower die of the setting machine, and the PLC controller drives the moving plate of the setting machine downward along the guide shaft of the setting machine by controlling the gas-liquid booster cylinder of the setting machine to close the mold with the lower die of the setting machine;

[0024] The PLC controller controls the mold clamping pressure to complete hot extrusion drying and molding. After the time required for product molding, the PLC controller controls the gas-liquid booster cylinder of the molding machine to drive the moving plate of the molding machine to move upward along the guide axis of the molding machine to take out the molded product.

[0025] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0026] The present invention provides a semi-automatic pulp molding and shaping device and a control method thereof. The present invention utilizes original ecological pulp to be hot-extruded and solidified into disposable environmentally friendly paper tableware, which solves the technical defects existing in the above-mentioned plastic tableware production process, specifically:

[0027] Water-slurry co-supply process: Currently, the overall hardness of tableware products in the same industry is poor, especially at the edges, because the slurry concentration in the mold cavity of the molding machine is uneven. The water-slurry co-supply process provided by the present invention can make the slurry more uniform, thereby eliminating this shortcoming. That is, the PLC controller simultaneously turns on four solenoid valves to switch the spray valve assembly and a back-supply valve, and controls the spray flow rate in a timely and quantitative manner according to product requirements, so that the slurry concentration can be adjusted according to the required weight and mass of the product to ensure the quality of the product slurry blank.

[0028] Delayed vacuum suction after spraying: After spraying is completed, many bubbles are formed on the surface of the slurry. If the negative pressure vacuum suction butterfly valve is opened immediately to suck away the pure water, the bubbles will adhere to the slurry blank, and bubble stains will easily form on the surface of the product completed by extrusion, heating and curing in the setting machine. In order to overcome the above-mentioned defects, the present invention waits for 3-5 seconds after the slurry in the slurry funnel reaches the set volume, and then opens the negative pressure vacuum suction butterfly valve and the drain valve to suck away the pure water, which can eliminate foam and ensure the appearance quality of the product.

[0029] Vacuum delay after the pure water in the slurry funnel is sucked away: when the pure water in the slurry funnel is sucked away, the negative pressure vacuum butterfly valve and the drain valve are not closed immediately, but the upper mold of the molding machine is moved upward. After the upper mold of the molding machine is separated from the mesh and the slurry blank, the negative pressure vacuum butterfly valve and the drain valve are closed to ensure that the slurry blank is firmly adsorbed on the mesh when the upper mold of the molding machine is moved upward, and is not adhered to or damaged by the upper mold of the molding machine, thereby ensuring product quality.

[0030] Reuse to protect the environment: The disposable environmentally friendly paper tableware produced by the present invention can be completely degraded in 20-30 days under natural conditions, thus solving the pollution problem caused by disposal, and can also be recycled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 It is a front view of a semi-automatic pulp molding shaping device according to an embodiment of the present invention;

[0033] Figure 2 It is a rear view of the semi-automatic pulp molding shaping device according to an embodiment of the present invention;

[0034] Figure 3 It is an axonometric view of a semi-automatic pulp molding and shaping device according to an embodiment of the present invention;

[0035] Figure 4 It is a left view of the semi-automatic pulp molding shaping device according to an embodiment of the present invention.

[0036] Among them, the gas-liquid booster cylinder 1 of the setting machine, the upper plate 2 of the setting machine, the moving plate 3 of the setting machine, the upper heating plate 4 of the setting machine, the upper mold 5 of the setting machine, the lower mold 6 of the setting machine, the lower heating plate 7 of the setting machine, the lower bottom plate 8 of the setting machine, the PLC controller 9, the slurry quantitative cup 10, the gas-liquid booster cylinder 11 of the molding machine, the main slurry inlet pipeline 12, the basket assembly 13, the upper mold 14 of the molding machine, the mesh 15, the lower mold 16 of the molding machine, the vacuum tank 17, the distribution box 18, the overflow port 19, the slurry inlet DN65 pipe 20, Drainage pneumatic butterfly valve 21, balancing air valve 22, reverse water supply valve 23, negative pressure vacuum butterfly valve 24, overflow return slurry main pipeline 25, oil-water separator 26, auxiliary cylinder 27, forming machine connecting shaft 28, forming machine guide shaft 29, forming machine base frame 30, forming machine upper guard 31, forming machine upper guard bracket 32, solenoid valve switch spraying valve assembly 33, molding machine guide shaft 34, slurry funnel 35, drain valve 36, aluminum middle frame 37, sealing foam board 38, molding machine base frame 39. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] In order to better demonstrate the semi-automatic pulp molding forming device, in this embodiment, two forming machines and one forming machine are sequentially demonstrated. Figure 1-4 As shown, from left to right are the setting machine, the forming machine, and the setting machine.

[0041] The semi-automatic pulp molding and shaping device provided in this embodiment mainly includes a shaping machine, a forming machine and a PLC controller 9.

[0042] The gas-liquid booster cylinder 1 of the setting machine is fixed to the upper plate 2 of the setting machine through M33 12.9 grade bolts, and the moving plate 3 of the setting machine is fastened to the piston rod M48 thread of the gas-liquid booster cylinder 1 of the setting machine through the setting machine connecting shaft 28, thereby realizing the connection between the moving plate 3 of the setting machine and the gas-liquid booster cylinder 1 of the setting machine.

[0043] The upper heating plate 4 and the upper mold 5 of the setting machine are fastened to the movable plate 3 of the setting machine by means of clamping fixtures, so that the movable plate 3 of the setting machine, the upper heating plate 4 and the upper mold 5 of the setting machine become an assembly; the lower mold 6 and the lower heating plate 7 of the setting machine are also fastened to the lower bottom plate 8 of the setting machine by means of clamping fixtures, and the lower bottom plate 8 of the setting machine is fastened to the bottom frame 30 of the setting machine.

[0044] The upper plate 2 of the molding machine is connected to the lower base plate 8 of the molding machine through multiple molding machine guide shafts 29 to form a fixed assembly, so that the assembly composed of the molding machine moving plate 3, the molding machine upper heating plate 4, and the molding machine upper mold 5 can perform the upper and lower mold closing action along the molding machine guide shaft 29 under the push of the molding machine gas-liquid booster cylinder 1.

[0045] The gas-liquid booster cylinder 11 of the molding machine is fastened to the upper bracket of the molding machine by bolts, just like the molding machine. The basket assembly 13 is threadedly fastened to the piston rod of the gas-liquid booster cylinder 11 of the molding machine through the molding machine connecting shaft, thereby realizing the connection between the basket assembly 13 and the gas-liquid booster cylinder 11 of the molding machine.

[0046] The upper mold 14 of the molding machine is fastened to the basket lifting assembly 13 by bolts, the lower mold 16 of the molding machine and the aluminum middle frame 37 are fixed on the molding machine bottom frame 39, the sealing foam plate 38 is installed in the upper mold 14 of the molding machine, the mesh 15 is placed in the lower mold 16 of the molding machine, and the slurry funnel 35 is arranged below the aluminum middle frame 37. Under the action of the molding machine gas-liquid booster cylinder 11, the basket lifting plate of the basket lifting assembly 13, the aluminum middle frame 37 and the slurry funnel 35 form a slurry cavity.

[0047] The upper bracket of the molding machine is connected to the molding machine bottom frame 39 through multiple molding machine guide shafts 34 to form a fixed assembly, so that the basket assembly 13 can perform the upper and lower mold clamping action along the molding machine guide shaft 34 under the push of the molding machine gas-liquid booster cylinder 11.

[0048] One end of the slurry inlet main pipeline 12 is connected to the external main slurry pool, and the other end of the slurry inlet main pipeline 12 is connected to the first slurry metering cup and the second slurry metering cup fixed on the upper bracket of the forming machine through the slurry inlet DN65 pipe 20 (the first slurry metering cup and the second slurry metering cup are the same, both represented by serial number 10 in the accompanying drawings), the first slurry metering cup is connected to two solenoid valve switch spraying valve assemblies 33, and the second slurry metering cup is connected to two solenoid valve switch spraying valve assemblies 33. The PLC controller 9 completes the timed and quantitative spraying process by controlling the solenoid valve switch spraying valve assembly 33.

[0049] The first slurry metering cup and the second slurry metering cup are both provided with an overflow port 19, which is connected to the external main slurry pool through the overflow return slurry main pipe 25; under the action of the pump pressure, the slurry circulates, specifically, the slurry enters the first slurry metering cup and the second slurry metering cup respectively through the slurry inlet main pipe 12, and when the slurry in the first slurry metering cup and / or the second slurry metering cup reaches the overflow port 19, the slurry circulates through the overflow return slurry main pipe 25 and merges into the main slurry pool.

[0050] One end of the drain valve 36 and one end of the reverse water supply valve 23 are connected to the slurry funnel 35 or the slurry cavity, the other end of the reverse water supply valve 23 is connected to the external pure water main pipeline, the other end of the drain valve 36 is connected to the vacuum tank 17 placed on one side of the molding machine chassis 39, one end of the water discharge pneumatic butterfly valve 21, one end of the negative pressure vacuum butterfly valve 24, and one end of the balancing air valve 22 are all connected to the vacuum tank 17, the other end of the negative pressure vacuum butterfly valve 24 is connected to the external negative pressure main pipeline, and the other end of the water discharge pneumatic butterfly valve 21 is connected to the return water main tank through the external underground return water main pipeline.

[0051] The PLC controller 9 is installed on the upper bracket of the molding machine, and the PLC controller 9 has built-in delayed vacuum suction program, timed quantitative grouting program and water slurry simultaneous supply program.

[0052] The PLC controller 9 is electrically connected to the setting machine gas-liquid booster cylinder 1, the molding machine gas-liquid booster cylinder 11, the solenoid valve switch spray valve assembly 33, the reverse water supply valve 23, the negative pressure vacuum butterfly valve 24, the drain valve 36, the drainage pneumatic butterfly valve 21, and the balancing air valve 22 respectively.

[0053] Preferably, the semi-automatic pulp molding and shaping device is further provided with a distribution box 18 ; the distribution box 18 supplies power to the semi-automatic pulp molding and shaping device, and the distribution box 18 is electrically connected to the PLC controller 9 .

[0054] Preferably, the gas-liquid booster cylinder 1 of the setting machine is a 30-ton gas-liquid booster cylinder, the gas-liquid booster cylinder 11 of the molding machine is a 15-ton gas-liquid booster cylinder, the number of the guide shafts 29 of the setting machine and the guide shafts 34 of the molding machine are both 4, and the number of the drain valves 36 is 2.

[0055] Preferably, an oil-water separator 26 and an auxiliary cylinder 27 are also provided on one side of the gas-liquid booster cylinder 1 of the setting machine, and the connection relationship thereof is conventional in the art. The setting machine is also provided with a setting machine upper shield 31, which is fixedly connected to the setting machine upper plate 2 through a setting machine upper shield bracket 32.

[0056] The present invention utilizes original ecological paper pulp to be hot-extruded and solidified into disposable environmentally friendly paper tableware; the present invention is equipped with upper and lower shaping molds, pulp scooping net membranes and a controllable pulp dosing device according to different size requirements of products.

[0057] During operation, the slurry flowing under normal pressure flows into the first slurry metering cup and the second slurry metering cup through the slurry inlet main pipeline 12 and the slurry inlet DN65 pipe 20. Here, the slurry inlet main pipeline 12 is in a normally open state, and the overflow port 19 is also in a normally open state. When the slurry height in the first slurry metering cup and / or the second slurry metering cup is flush with the overflow port 19, it flows back to the main slurry pool through the overflow return slurry main pipeline 25.

[0058] Start the setting machine, the PLC controller 9 controls the molding machine gas-liquid booster cylinder 11 by controlling the molding and clamping solenoid valve, thereby pushing the basket assembly 13 down along the guide of the molding machine guide shaft 34 to the aluminum middle frame 37, and forms a slurry cavity with the aluminum middle frame 37 and the slurry funnel 35. At the same time, the water-slurry simultaneous supply program and the timed quantitative grouting program are started, the reverse water supply valve 23 and the four solenoid valve switch spray valve assembly 33 are opened, and water and slurry are injected into the slurry funnel 35; when the slurry in the slurry funnel 35 reaches the set slurry volume, the reverse water supply valve 23 and the four solenoid valve switch spray valve assembly 33 are closed, the delayed vacuum suction program is started, and after waiting for the set time, the vacuum pump 20 is opened at the same time. Open the negative pressure vacuum butterfly valve 24 and the drain valve 36, the vacuum tank 17 instantly forms a negative pressure, and the pure water in the slurry funnel 35 is pumped into the vacuum tank 17. The remaining slurry is evenly adsorbed in the mesh 15. The PLC controller 9 controls the molding machine gas-liquid booster cylinder 11 by controlling the power-off reset of the molding and clamping solenoid valve, thereby driving the basket assembly 13 to move upward along the molding machine guide shaft 34. When the basket assembly 13 reaches the specified position, the operator takes out the mesh 15 and the slurry, closes the negative pressure vacuum butterfly valve 24 and the drain valve 36, and then opens the balance air valve 22 and the drainage pneumatic butterfly valve 21 to allow the pure water in the vacuum tank 17 to flow into the underground return water main pipeline, and the molding is completed.

[0059] The operator puts the taken out 15 mesh and blank into the lower mold 6 of the setting machine and starts the setting machine. The PLC controller 9 controls the gas-liquid booster cylinder 1 of the setting machine by controlling the setting mold clamping solenoid valve, thereby driving the moving plate 3 of the setting machine to move downward along the guide shaft 29 of the setting machine and close the mold with the lower mold 6 of the setting machine; the PLC controller 9 controls the mold clamping pressure by controlling the setting booster solenoid valve to complete the hot extrusion drying molding. After the time required for product molding, the PLC controller 9 controls the gas-liquid booster cylinder 1 of the setting machine by simultaneously resetting the setting mold clamping solenoid valve and the molding booster solenoid valve, thereby driving the moving plate 3 of the setting machine to move upward along the guide shaft 29 of the setting machine and open the mold with the setting lower mold 6 on the lower plate 8 of the setting machine. The operator takes out the molded product, and the equipment completes an operation cycle.

[0060] Example 2

[0061] This embodiment also provides a control method for a semi-automatic pulp molding and shaping device, which specifically includes the following steps:

[0062] Step 101: The PLC controller controls the air-liquid booster cylinder of the molding machine to drive the basket assembly downward along the guide shaft of the molding machine, so that the basket assembly, the aluminum middle frame, and the slurry funnel form a slurry cavity, and at the same time starts the water slurry simultaneous supply program and the timed quantitative grouting program, and opens the solenoid valve to switch the spray valve assembly and the reverse water supply valve.

[0063] Step 102: When the slurry in the slurry funnel reaches the set slurry volume, close the solenoid valve switch spray valve assembly and the reverse water supply valve; start the delayed vacuum suction program, wait for the set time, and then open the negative pressure vacuum suction butterfly valve and the drain valve at the same time, and the vacuum tank instantly forms a negative pressure, and the pure water in the slurry funnel is pumped into the vacuum tank, leaving the slurry blank in the mesh.

[0064] Step 103: The PLC controller drives the basket assembly upward along the guide shaft of the molding machine by controlling the gas-liquid booster cylinder of the molding machine. When the basket assembly reaches the specified position, the mesh and the pulp are taken out, the negative pressure vacuum butterfly valve and the drain valve are closed, and then the balance air valve and the drainage pneumatic butterfly valve are opened to allow the pure water in the vacuum tank to flow into the underground return water main pipeline.

[0065] Step 104: the removed mesh and the blank are placed into the lower die of the molding machine, and the PLC controller drives the movable plate of the molding machine downward along the guide shaft of the molding machine by controlling the gas-liquid booster cylinder of the molding machine to close the mold with the lower die of the molding machine.

[0066] Step 105: The PLC controller controls the mold clamping pressure to complete hot extrusion drying molding. After the time required for product molding, the PLC controller controls the gas-liquid booster cylinder of the molding machine to drive the moving plate of the molding machine to move upward along the guide axis of the molding machine to take out the molded product.

[0067] The existing models of the same industry do not have a water-slurry co-supply process device, and the four solenoid valve switch spraying valve assemblies cannot automatically control the spraying according to their respective timed quantitative slurry supply programs, resulting in uneven slurry concentration, uneven billet weight, and large differences in product weight. After the present invention adds a water-slurry co-supply process device, the four solenoid valve switch spraying valve assemblies automatically control the spraying according to their respective timed quantitative slurry supply programs, thereby achieving uniform slurry concentration and balanced product weight. Among them, the timed quantitative slurry supply program is set according to actual needs.

[0068] After the existing machines of the same industry are grouting, many bubbles will be generated on the slurry surface. If the negative pressure vacuum butterfly valve is immediately opened to extract the pure water in the slurry, bubbles will be printed on the surface of the molded product, affecting the appearance quality of the product. In order to overcome the above defects, the present invention waits for 3-5 seconds after the slurry in the slurry funnel reaches the set volume, and then opens the negative pressure vacuum butterfly valve and the drain valve to absorb the pure water, which can eliminate bubbles and ensure the appearance quality of the product.

[0069] In addition, after the pure water in the slurry funnel is sucked away, the negative pressure vacuum butterfly valve and the drain valve are not closed immediately. Instead, the upper mold of the molding machine is moved upward. After the upper mold of the molding machine is separated from the mesh and the slurry blank, the negative pressure vacuum butterfly valve and the drain valve are closed. This ensures that the slurry blank is firmly adsorbed on the mesh when the upper mold of the molding machine is moved upward, and is not damaged by adhesion and stretching by the upper mold of the molding machine, thereby ensuring product quality.

[0070] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0071] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A semi-automatic pulp molding shaping device, characterized in that: It includes a setting machine, a forming machine, a PLC controller and a distribution box; among which, The gas-liquid booster cylinder of the setting machine is fixed to the upper plate of the setting machine by bolts, and the moving plate of the setting machine is threadedly fastened with the piston rod of the gas-liquid booster cylinder of the setting machine through the connection shaft of the setting machine; the upper heating plate of the setting machine and the upper mold of the setting machine are fastened to the moving plate of the setting machine by a clamping fixture, so that the moving plate of the setting machine, the upper heating plate of the setting machine and the upper mold of the setting machine become an assembly; the lower mold of the setting machine and the lower heating plate of the setting machine are fastened to the lower bottom plate of the setting machine by a clamping fixture, and the lower bottom plate of the setting machine is fastened to the bottom frame of the setting machine; the upper plate of the setting machine is connected to the lower bottom plate of the setting machine by multiple guide shafts of the setting machine to form a fixed assembly, so that the assembly composed of the moving plate of the setting machine, the upper heating plate of the setting machine and the upper mold of the setting machine can perform up and down mold closing action along the guide shaft of the setting machine under the push of the gas-liquid booster cylinder of the setting machine; The gas-liquid booster cylinder of the molding machine is fastened to the upper bracket of the molding machine by bolts, the basket lifting assembly is fastened with the piston rod of the gas-liquid booster cylinder of the molding machine by threading through the molding machine connecting shaft, the upper mold of the molding machine is fastened to the basket lifting assembly by bolts, the lower mold of the molding machine and the aluminum middle frame are fixed to the bottom frame of the molding machine, the sealing foam plate is installed in the upper mold of the molding machine, the mesh is placed in the lower mold of the molding machine, and the slurry funnel is arranged below the aluminum middle frame; under the action of the gas-liquid booster cylinder of the molding machine, the basket lifting plate of the basket lifting assembly, the aluminum middle frame and the slurry funnel form a slurry cavity; the upper bracket of the molding machine is connected to the bottom frame of the molding machine through multiple molding machine guide shafts to form a fixed combination, so that the basket lifting assembly can perform upper and lower mold clamping actions along the molding machine guide shafts under the push of the molding machine gas-liquid booster cylinder; One end of the slurry inlet main pipeline is connected to the external main slurry pool, and the other end of the slurry inlet main pipeline is respectively connected to the first slurry metering cup and the second slurry metering cup fixed on the upper bracket of the molding machine through the slurry inlet port, the first slurry metering cup is connected to the two solenoid valve switch spraying valve assemblies, and the second slurry metering cup is connected to the two solenoid valve switch spraying valve assemblies; one end of the drain valve and one end of the reverse water supply valve are both connected to the slurry funnel, the other end of the reverse water supply valve is connected to the external pure water main pipeline, the other end of the drain valve is connected to the vacuum tank placed on one side of the molding machine chassis, one end of the drainage pneumatic butterfly valve and one end of the negative pressure vacuum butterfly valve are both connected to the vacuum tank, the other end of the negative pressure vacuum butterfly valve is connected to the external negative pressure main pipeline, and the other end of the drainage pneumatic butterfly valve is connected to the external underground return water main pipeline; The PLC controller is installed on the upper bracket of the molding machine, and the PLC controller has built-in delayed vacuum suction program, timed quantitative grouting program and water slurry simultaneous supply program; the PLC controller is electrically connected to the gas-liquid booster cylinder of the molding machine, the gas-liquid booster cylinder of the molding machine, the solenoid valve switch spraying valve assembly, the reverse water supply valve, the negative pressure vacuum suction butterfly valve, the drain valve, and the drainage pneumatic butterfly valve respectively; A balancing gas valve in communication with the vacuum tank is installed on the vacuum tank, and the balancing gas valve is also electrically connected to the PLC controller; The power distribution box supplies power to the PLC controller.

2. The semi-automatic pulp molding shaping device according to claim 1, characterized in that: The first slurry metering cup and the second slurry metering cup are both provided with an overflow port, and the overflow port is connected to the external main slurry pool through an overflow return slurry main pipeline; under the action of pump pressure, the slurry enters the first slurry metering cup and the second slurry metering cup respectively through the slurry inlet main pipeline, and when the slurry in the first slurry metering cup and / or the second slurry metering cup reaches the overflow port, the slurry circulates through the overflow return slurry main pipeline and merges into the main slurry pool.

3. The semi-automatic pulp molding shaping device according to claim 1, characterized in that: The gas-liquid booster cylinder of the setting machine is a 30-ton gas-liquid booster cylinder; the gas-liquid booster cylinder of the molding machine is a 15-ton gas-liquid booster cylinder.

4. The semi-automatic pulp molding shaping device according to claim 1, characterized in that: An oil-water separator and an auxiliary cylinder are also arranged on one side of the gas-liquid booster cylinder of the setting machine.

5. The semi-automatic pulp molding shaping device according to claim 1, characterized in that: The molding machine further comprises an upper molding machine shield; the upper molding machine shield is fixedly connected to the upper molding machine plate via an upper molding machine shield bracket.

6. The semi-automatic pulp molding shaping device according to claim 1, characterized in that: The number of the guide shafts of the setting machine and the guide shaft of the forming machine are both 4, and the number of the drain valves is 2.

7. A control method for a semi-automatic pulp molding and shaping device according to any one of claims 1 to 6, characterized in that: The control method comprises: The PLC controller has built-in delayed vacuum suction program, timed quantitative grouting program and water slurry simultaneous supply program; the PLC controller drives the basket assembly downward along the guide shaft of the molding machine by controlling the gas-liquid booster cylinder of the molding machine, so that the basket assembly, the aluminum middle frame and the slurry funnel form a slurry cavity, and at the same time starts the water slurry simultaneous supply program and the timed quantitative grouting program, and opens the solenoid valve to switch the spraying valve assembly and the reverse water supply valve; When the slurry in the slurry funnel reaches the set slurry volume, the solenoid valve switch spray valve assembly and the reverse water supply valve are closed; the delayed vacuum suction program is started, and after waiting for the set time, the negative pressure vacuum suction butterfly valve and the drain valve are opened at the same time, and the vacuum tank instantly forms a negative pressure, and the pure water in the slurry funnel is pumped into the vacuum tank, leaving the slurry blank in the mesh; The PLC controller drives the basket assembly to move upward along the guide shaft of the molding machine by controlling the gas-liquid booster cylinder of the molding machine. When the basket assembly reaches the specified position, the mesh and the slurry are taken out, the negative pressure vacuum butterfly valve and the drain valve are closed, a balancing air valve connected to the vacuum tank is installed on the vacuum tank, and then the balancing air valve and the drain pneumatic butterfly valve are opened to allow the pure water in the vacuum tank to flow into the underground return water main pipeline; The removed mesh and blank are placed into the lower die of the setting machine, and the PLC controller drives the moving plate of the setting machine downward along the guide shaft of the setting machine by controlling the gas-liquid booster cylinder of the setting machine to close the mold with the lower die of the setting machine; The PLC controller controls the mold clamping pressure to complete hot extrusion drying and molding. After the time required for product molding, the PLC controller controls the gas-liquid booster cylinder of the molding machine to drive the moving plate of the molding machine to move upward along the guide axis of the molding machine to take out the molded product.

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