Container preparation system and preparation method coupled with blow molding and plasma coating

Abstract

The invention relates to the technical field of food plastic packaging application, in particular to a blow molding and plasma coating coupled container preparation system and method.The blow molding and plasma coating coupled container preparation system comprises a coupling assembly, and the coupling assembly comprises a blow molding nozzle, a mold, an input pipe and an electrode; the preparation system can be switched between a blow molding state and a plasma coating state, and has the beneficial effects that the system ingeniously combines a blow molding technology and a plasma coating technology, switching of two different machining processes is achieved through one set of coupling assembly, and then the integrity of the container production process is ensured; according to the system, two technologies of blow molding and plasma coating are integrated in one set of coupling assembly, so that the production efficiency and the flexibility are greatly improved, and the cost is reduced. The system can be easily switched between the blow molding process and the plasma coating process according to requirements, and different production requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of food plastic packaging applications, and in particular to a container preparation system and method for coupled blow molding and plasma coating. Background Art

[0002] Throughout the world, plastics have been favored in food and beverage packaging materials due to their lightness, durability, and high cost-effectiveness. In my country, the amount of plastics used has exceeded 50% of the total amount of food packaging materials. Since plastic packaging materials are in direct contact with food, the migration of harmful chemicals in plastics into food and their safety have attracted widespread attention in recent years.

[0003] In the process of plastic production, in order to improve the performance of materials, various additives such as plasticizers, stabilizers, lubricants, antistatic agents and colorants are often used. Although the resin itself is non-toxic, these additives have different degrees of toxicity, and these additives are very easy to migrate into the food in contact with them due to the lack of chemical bonds, and enter the human body through the diet and gradually accumulate, thereby producing various toxic effects that damage health. At present, countries around the world attach great importance to the safety of food packaging materials and have formulated increasingly stringent health limit standards. The European Community (EEC) stipulates that the total amount of migration from plastic packaging materials to food should be less than 10mg / dm2 or ≤60mg / kg; the US FDA stipulates that when the cumulative dietary concentration caused by food contact substances (including food packaging materials and utensils) is less than 0.15μg / kg, it is considered safe.

[0004] Coating a layer of high-barrier inorganic material on the surface of plastic packaging materials is a very effective barrier method to improve the barrier performance without affecting the aesthetics of existing product packaging. Transparent SiO2 material can also be coated on the plastic surface. SiO2 material has no reflective effect on microwaves and is particularly suitable for packaging materials for microwave foods that need to be heated directly in a microwave oven.

[0005] However, it is relatively easy to coat the surface of a flat film with a high barrier property. Generally, the film is cooled by adjusting the tension through several rollers. When the evaporation material is completely deposited, it is rolled onto the lead-out shaft. However, it is relatively difficult to coat the inner wall of small-diameter packaging containers, such as beverage bottles and oil bottles.

[0006] Furthermore, in the prior art, the coating operation is often separated from the blow molding operation of the container, resulting in poor integrity of the container production process. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a container preparation system that couples blow molding and plasma coating, which solves the technical problems of the prior art in that small-caliber packaging containers are difficult to coat and the integrity of the container production process is poor.

[0009] (II) Technical solution

[0010] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0011] In the first aspect, the present invention provides a container preparation system for coupled blow molding and plasma coating, including a coupling component, the coupling component including a blow molding nozzle, a mold, an input pipe and an electrode; an annular cavity is formed in the blow molding nozzle, and a forming cavity is formed in the mold, the annular cavity has an annular opening facing the forming cavity, and the annular cavity is suitable for connecting to the output end of an injection molding device; the input pipe penetrates the blow molding nozzle from the middle of the annular cavity along the axial direction of the annular cavity, and extends toward the forming cavity to form an output section, and discharge holes are evenly distributed on the side wall of the output section; the electrode is arranged in the input pipe, and is gap-matched with the input pipe to form a coupling channel with a top end closed between the input pipe and the electrode; the preparation system can switch between a blow molding state and a plasma coating state, when the system is in a blow molding state, the annular cavity receives a forming medium from the injection molding device, and the coupling channel receives an inert gas; when the system is in a plasma coating state, the coupling channel receives a plasma coating medium.

[0012] In a second aspect, the present invention provides a method for preparing a container, which is applied to the preparation system in the above technical solution, and the preparation method comprises:

[0013] S1: The forming medium is input into the annular cavity so that the forming medium extends toward the bottom of the mold to form a cylinder under the action of gravity until the lower end of the cylindrical forming medium is closed under the truncation of the mold.

[0014] S2: Inert gas is input into the coupling channel until the container is formed;

[0015] S3: Inputting the plasma coating mixed medium into the coupling channel, and simultaneously energizing one of the input tube and the electrode, so that the coupling channel ionizes the plasma coating medium passing through the coupling channel.

[0016] (III) Beneficial effects

[0017] The beneficial effects of the present invention are: the coupled blow molding and plasma coating container preparation system of the present invention cleverly combines the blow molding technology and the plasma coating technology, realizes the switching of two different processing processes through a set of coupling components, and thus ensures the integrity of the container production process.

[0018] The system integrates blow molding and plasma coating into a set of coupled components, greatly improving production efficiency and flexibility and reducing costs. The system can easily switch between the blow molding process and the plasma coating process as needed to meet different production needs.

[0019] Since the coupling component integrates the blow molding and plasma coating functions, when the blow molding operation is performed, if the input tube is extended into the container, it is bound to match the small-diameter container; during the plasma coating process, the position of the input tube does not change, so the plasma coating operation can still match the small-diameter container, thereby improving the adaptability of the system to different containers.

[0020] The injection molding process is a high-temperature process. Plasma coating after injection molding can fully utilize the residual heat of the injection molding process, improve the effect of plasma coating, maximize the use of energy, and save the production cost of the container.

[0021] Injection molding is performed directly with inert gas, so that after the injection molding is completed, the inert gas remaining in the container forms a protective barrier for the plasma coating process, so that the inert gas not only plays the role of expanding the container, but also plays the role of improving the stability of the plasma coating operation. While ensuring the production quality, it realizes the maximum utilization of raw materials and further saves the production cost of the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a container preparation system of the present invention that couples blow molding and plasma coating.

[0023] [Description of Reference Numerals]

[0024] 10. Container; 100. Coupling assembly; 110. Blow molding nozzle; 120. Mold; 121. Heat dissipation channel; 130. Input pipe; 140. Electrode; 200. Inflating pipeline assembly; 210. Inert gas cylinder; 220. Inflating pump; 230. Inflating valve; 240. Inflating pipeline; 250. Inflating gas flow meter; 260. Inflating stop valve; 300. Oxygen supply coating pipeline assembly; 310. Oxygen cylinder; 320. Oxygen pump; 330. Pulse generator device; 340, molding device; 350, raw material tank; 360, oxygen supply gas flow meter; 370, oxygen supply regulating valve; 380, oxygen supply coating stop valve; 390, mixed medium flow meter; 395, discharge regulating valve; 400, pressure gauge; 500, pressure relief pipeline assembly; 510, pressure relief pipeline; 520, pressure relief valve; 600, cooling assembly; 610, cooling pipeline; 620, cooling water flow meter; 630, cooling water valve; 640, temperature detection device. DETAILED DESCRIPTION

[0025] In order to better explain the present invention, so as to facilitate understanding, the following Figure 1 , the present invention is described in detail through specific implementation methods.

[0026] Embodiment 1:

[0027] Reference Figure 1 The embodiment of the present invention provides a container preparation system for coupled blow molding and plasma coating, including a coupling component 100, the coupling component 100 includes a blow molding nozzle 110, a mold 120, an input pipe 130 and an electrode 140; an annular cavity is formed in the blow molding nozzle 110, and a forming cavity is formed in the mold 120, the annular cavity has an annular opening facing the forming cavity, and the annular cavity is suitable for connecting the output end of the injection molding device; the input pipe 130 penetrates the blow molding nozzle 110 along the axial direction of the annular cavity from the middle of the annular cavity and extends toward the forming cavity; the electrode 140 is arranged in the input pipe 130 and keeps a clearance fit with the input pipe 130, the top end of the input pipe 130 is closed, so that a coupling channel with a top end closed is formed between the input pipe 130 and the electrode 140; the preparation system can switch between a blow molding state and a plasma coating state, when the system is in the blow molding state, the annular cavity receives the forming medium from the injection molding device, and the coupling channel receives the inert gas; when the system is in the plasma coating state, the coupling channel receives the plasma coating medium.

[0028] In this embodiment, the system skillfully combines the blow molding technology and the plasma coating technology, and realizes the switching of two different processing processes through a set of coupling components 100, thereby ensuring the integrity of the production process of the container 10.

[0029] Since the coupling assembly 100 integrates the blow molding and plasma coating functions, when the blow molding operation is performed, if the input tube 130 is extended into the container 10, it is bound to match the small-diameter container 10; during the plasma coating process, the position of the input tube 130 does not change, so the plasma coating operation can still match the small-diameter container 10, thereby improving the adaptability of the system to different containers 10.

[0030] The blow molding nozzle 110 is designed with an annular cavity inside, and the main function of the annular cavity is to receive and temporarily store the forming medium, such as molten plastic, from the injection molding device. The annular opening of the annular cavity faces the forming cavity of the mold 120, ensuring that the forming medium can smoothly flow into the mold 120 for blow molding.

[0031] A forming cavity is formed inside the mold 120, which is the space where the container 10 is finally formed. During the blow molding process, the molten plastic enters the forming cavity of the mold 120 through the annular cavity of the blow molding nozzle 110, and expands and forms under the action of the inert gas.

[0032] The input pipe 130 passes through the middle of the annular cavity of the blow molding nozzle 110 along the axial direction, that is, the blow molding nozzle 110 is provided with a channel for passing through the input pipe 130, and the channel is independent and separated from the annular cavity. After passing through the blow molding nozzle 110, the input pipe 130 continues to extend toward the forming cavity of the mold 120. The input pipe 130 is both a channel for inert gas and a conveying path for the plasma coating medium.

[0033] The electrode 140 is installed inside the input tube 130 and maintains a certain gap with the input tube 130 to form a so-called coupling channel. This gap allows gas or coating medium to flow between the two without directly contacting the electrode 140, thereby ensuring the safety and stability of the system.

[0034] When the system is in the blow molding state, the injection molding device feeds the molten plastic into the annular cavity of the blow molding nozzle 110. Under the action of gravity, the molten plastic continues to fall and will eventually be closed by the bottom surface of the forming cavity. Subsequently, the inert gas enters the annular cavity through the coupling channel in the input pipe 130, and enters the forming cavity of the mold 120 through the annular opening of the annular cavity. Under the action of the inert gas, the molten plastic expands and forms in the mold 120, and finally forms the desired shape of the container 10.

[0035] When it is necessary to switch to the plasma coating process, the system stops the blow molding operation and adjusts the medium flow in the input pipe 130. At this time, the plasma coating medium enters the forming cavity of the mold 120 through the coupling channel in the input pipe 130. Under the action of the high-temperature plasma generated by the electrode 140, the coating medium is heated and coated on the surface of the container 10 to form a solid coating.

[0036] The system integrates the two technologies of blow molding and plasma coating into a set of coupling components 100, which greatly improves production efficiency and flexibility and reduces costs. The system can easily switch between the blow molding process and the plasma coating process as needed to meet different production needs.

[0037] Furthermore, the injection molding process is a relatively high temperature process. Plasma coating after the injection molding process can fully utilize the residual heat of the injection molding process, improve the effect of plasma coating, maximize the utilization of energy, and save the production cost of the container 10.

[0038] Injection molding is performed directly with inert gas, so that after the injection molding is completed, the inert gas retained in the container 10 forms a protective barrier for the plasma coating process, so that the inert gas not only expands the container 10, but also improves the stability of the plasma coating operation. While ensuring the production quality, it achieves the maximum utilization of raw materials and further saves the production cost of the container 10.

[0039] Embodiment 2:

[0040] Reference Figure 1 In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0041] It also includes an inflation pipeline assembly 200 and an oxygen supply and coating pipeline assembly 300. The inflation pipeline assembly 200 is suitable for inputting inert gas into the container 10 through the coupling channel; the oxygen supply and coating pipeline assembly 300 is suitable for inputting a mixed medium of oxygen and coating materials into the coupling channel.

[0042] In this embodiment, the main function of the inflation pipeline assembly 200 is to input inert gas such as nitrogen, argon, etc. into the container 10 during the blow molding process. At this time, the container 10 is in the molding stage. Under the expansion of the inert gas, the container 10 will gradually take shape in the molding cavity. At the same time, the inert gas forms a protective layer inside the container 10, which helps to prevent the container 10 from oxidation, deformation or collapse under high temperature or vacuum environment, ensuring the quality and stability of the container 10; and, the inert gas forms a protective layer in the plasma coating stage to prevent impurities in the air from being ionized to produce unnecessary coating substances, ensuring the stability of the coating operation and the coating effect.

[0043] The oxygen supply coating pipeline assembly 300 can input a mixed medium of oxygen and coating material into the coupling channel during the plasma coating process. This mixed medium is ionized under the action of the high-energy electric field generated by the electrode 140. When the coating material is silicon, silicon dioxide is generated by the oxygen under the action of the electric field and coated on the inner wall of the container 10.

[0044] The oxygen supply coating pipeline assembly 300 is connected to the coupling channel. In the plasma coating stage, it is responsible for accurately and stably conveying the mixed medium of oxygen and coating materials into the coupling channel to ensure the smooth progress of the plasma coating process.

[0045] The gas filling pipeline assembly 200 and the oxygen supply coating pipeline assembly 300 are closely coordinated with other parts of the system, such as the injection molding device, the electrode 140 control system, etc., to achieve coordination and optimization of the overall function. At the same time, the system can be equipped with advanced control software or PLC to achieve precise control and real-time monitoring of each component.

[0046] During the operation, the operator can flexibly switch the working states of the gas-filling pipeline assembly 200 and the oxygen-supply coating pipeline assembly 300 according to different production requirements and working modes. For example, in the blow molding stage, the oxygen-supply coating pipeline assembly 300 is closed and the gas-filling pipeline assembly 200 is opened; in the plasma coating stage, the gas-filling pipeline assembly 200 is closed and the oxygen-supply coating pipeline assembly 300 is opened. In addition, the production process and product quality can be further optimized by adjusting parameters such as gas flow, pressure, and temperature.

[0047] Embodiment 3:

[0048] Reference Figure 1 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0049] The device further comprises a pressure gauge 400 connected to the input pipe 130 and adapted to measure the pressure of the coupling channel.

[0050] In this embodiment, the pressure gauge 400 can reflect the pressure change in the coupling channel in real time, which is very important for controlling the gas pressure during the blow molding process, adjusting the medium flow during plasma coating, and ensuring the stable operation of the system. By monitoring the pressure, potential problems caused by excessively high or low pressure, such as rupture of the container 10, poor coating effect, or system damage, can be discovered and prevented in time. According to the reading of the pressure gauge 400, the operator can fine-tune the production parameters to achieve the best production effect and product quality.

[0051] Embodiment 4:

[0052] Reference Figure 1 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0053] The inflation pipeline assembly 200 includes an inert gas cylinder 210, an inflation pump 220, an inflation valve 230 and an inflation pipeline 240. The inert gas cylinder 210 is connected to the inflation pump 220. The inflation valve 230 is arranged on the inflation pipeline 240. The two ends of the inflation pipeline 240 are respectively connected to the inflation pump 220 and the input pipe 130.

[0054] In this embodiment, the inert gas cylinder 210 is a container 10 for storing inert gas, and commonly used inert gases include nitrogen, argon, etc. The gas charging pump 220 is the power source of the gas charging pipeline assembly 200, which can extract and pressurize the gas in the inert gas cylinder 210, and then transport it to the gas charging pipeline 240. The selection of the gas charging pump 220 should be determined according to the needs of the system, including parameters such as the flow rate and pressure of the gas. The gas charging valve 230 is arranged on the gas charging pipeline 240 to control the flow of the gas. By adjusting the opening of the gas charging valve 230, the amount of gas entering the interior of the container 10 can be accurately controlled, thereby realizing accurate control of the internal environment of the container 10. The gas charging pipeline 240 is a channel connecting the inert gas cylinder 210, the gas charging pump 220 and the input pipe 130, which is responsible for transporting the pressurized inert gas to the coupling channel of the coupling assembly 100, and then entering the interior of the container 10. The design of the inflation pipeline 240 should take into account factors such as gas flow resistance, leakage problems, and safety.

[0055] When the system needs to input inert gas into the container 10, the valve of the inert gas cylinder 210 is first opened to allow the gas to enter the inflation pump 220. The inflation pump 220 pressurizes the gas and then delivers it to the inflation valve 230 through the inflation pipeline 240. The operator adjusts the opening of the inflation valve 230 as needed to control the flow rate and pressure of the gas. Finally, the inert gas enters the coupling channel through the input pipe 130 and is input into the container 10 through the coupling channel.

[0056] The inflation pipeline assembly 200 also includes an inflation gas flow meter 250 disposed between the inflation pump 220 and the main pipeline for detecting the gas flow of the inflation pump 220 . The inflation pump 220 is communicatively connected to the inflation gas flow meter 250 to form an inflation feedback control loop of the inflation pump 220 .

[0057] In this embodiment, the inflation gas flow meter 250 is installed between the inflation pump 220 and the main pipeline, and its main function is to detect and measure the flow rate of the inert gas output from the inflation pump 220 in real time. By communicating with the inflation gas flow meter 250, an inflation feedback control loop can be formed. The working principle of this loop is as follows:

[0058] Flow detection: The inflation gas flow meter 250 detects the gas flow output by the inflation pump 220 in real time and feeds this data back to the control system.

[0059] Data analysis: After receiving the flow data, the control system will compare and analyze it with the preset process parameters. If there is a deviation between the actual flow and the preset value, the control system will calculate the corresponding adjustment amount.

[0060] Feedback control: Based on the calculated adjustment amount, the control system will send a control signal to the air pump 220 to adjust its working state, such as speed, pressure, etc., to achieve precise control of the gas flow.

[0061] Cycle adjustment: This process will be repeated until the actual flow rate is consistent with the preset value or meets the process requirements.

[0062] Through real-time detection and feedback control, the accuracy and stability of the inflation process can be significantly improved, ensuring the uniformity and consistency of the internal environment of the container 10. According to the flow data, the process parameters can be fine-tuned to achieve the best production effect and product quality. By accurately controlling the gas flow, unnecessary waste can be avoided and production costs can be reduced.

[0063] The inflation pipeline assembly 200 further includes an inflation stop valve 260 disposed on the inflation pipeline 240 to keep the inflation pipeline assembly 200 in a closed state during the non-inflation process of the container 10, thereby improving the reliability of the system.

[0064] Embodiment 5:

[0065] Reference Figure 1 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0066] The oxygen supply coating pipeline assembly 300 includes an oxygen cylinder 310, an oxygen pump 320, a pulse generator 330, a former 340 and a raw material tank 350; the oxygen cylinder 310 is connected to the inlet end of the oxygen pump 320; the outlet end of the former 340 is connected to the input pipe 130; the outlet end of the raw material tank 350 is connected to the material inlet end of the former 340, and silicon particles or silicon powder can be stored in the raw material tank 350; a first output end and a second output end extend from the oxygen pump 320, the first output end is connected to the inlet end of the pulse generator 330, and the outlet end of the pulse generator 330 is connected to the gas inlet end of the former 340; the second output end is connected to the downstream area of ​​the raw material tank 350 along which the raw material is output, so as to form a fluidized zone for the material in the downstream area of ​​the raw material tank 350.

[0067] In this embodiment, the oxygen cylinder 310 is used as an oxygen storage container 10 to provide the required oxygen for the entire oxygen supply coating process. The oxygen pump 320 is responsible for extracting and pressurizing the oxygen in the oxygen cylinder 310 and then delivering it to other parts of the system. The oxygen pump 320 has two output ends, which are used for different functions.

[0068] The pulse generator 330 is connected after the first output end of the oxygen pump 320, and is used to convert the continuous oxygen flow into a pulse flow. This pulse flow helps to form a more stable and uniform mixed medium flow during the plasma coating process, thereby improving the quality of the coating. The former 340 receives the pulse oxygen flow from the pulse generator 330 and the coating material from the raw material tank 350, mixes them and guides them to the input pipe 130 of the coupling channel. Inside the former 340, the oxygen and the coating material are fully mixed under the action of the high-speed airflow to form a mixed medium suitable for plasma coating. Specifically, the former 340 can be set as a plunger former 340.

[0069] The raw material tank 350 is used to store coating materials such as silicon particles or silicon powder. The outlet of the raw material tank 350 is connected to the material inlet of the former 340 to ensure that the coating materials can enter the former 340 smoothly.

[0070] The second output end of the oxygen pump 320 is connected to the downstream area of ​​the raw material tank 350 along which the raw material is output. Oxygen is used to form a fluidized zone in the downstream area of ​​the raw material tank 350, that is, the kinetic energy and shear force of the oxygen flow are used to loosen and disperse the coating material in the raw material tank 350, making it easier for it to enter the former 340 and mix with oxygen, and also improving the mixing effect of the coating material with oxygen.

[0071] During the plasma coating process, the oxygen supply coating pipeline assembly 300 first pressurizes the oxygen in the oxygen cylinder 310 through the oxygen pump 320 and delivers it to the downstream area of ​​the pulse generator 330 and the raw material tank 350 respectively. The pulse generator 330 converts the continuous oxygen flow into a pulse flow, and the downstream area of ​​the raw material tank 350 forms a fluidized zone, making it easier for the coating material to be inhaled and mixed. Then, the pulse oxygen flow and the coating material are mixed, accelerated and guided to the input pipe 130 of the coupling channel in the former 340, and finally enter the interior of the container 10 for plasma coating.

[0072] The oxygen supply coating pipeline assembly 300 also includes an oxygen supply gas flow meter 360 and an oxygen supply regulating valve 370, and the oxygen supply regulating valve 370 and the oxygen supply gas flow meter 360 are both arranged between the first output end and the pulse generator 330; the oxygen supply coating pipeline assembly 300 also includes an oxygen supply coating stop valve 380 arranged between the former 340 and the input pipe 130.

[0073] In this embodiment, the oxygen supply gas flowmeter 360 is used to accurately measure and control the oxygen flow through the pipeline. By monitoring and adjusting the flow, the coating effect can be optimized and problems caused by insufficient or excessive oxygen supply can be prevented. The oxygen supply control valve 370 is also arranged between the first output end and the pulse generator 330, adjacent to the oxygen supply gas flowmeter 360. The oxygen supply control valve 370 is used to control the flow and cutoff of oxygen. When it is necessary to adjust the oxygen flow or to stop the oxygen supply urgently, it can be achieved by operating the control valve. It is arranged between the former 340 and the input pipe 130. The oxygen supply coating stop valve 380 can cut off the oxygen supply in the pipeline when necessary, and can close the oxygen supply coating pipeline assembly 300 during the process of filling with inert gas.

[0074] In summary, under the joint action of the oxygen supply gas flow meter 360, the oxygen supply regulating valve 370 and the stop valve, the working reliability of the oxygen supply coating pipeline assembly 300 is well guaranteed.

[0075] The oxygen supply coating pipeline assembly 300 also includes a mixed medium flow meter 390 arranged on the connecting pipe, and a discharge regulating valve 395 arranged on the outlet end of the raw material tank 350. The mixed medium flow meter 390 and the discharge regulating valve 395 are communicatively connected to form a discharge feedback control loop of the discharge regulating valve 395, thereby adjusting the gas-solid ratio of the mixed medium in the former 340440. The discharge feedback control loop can improve the overall automation level of the system, thereby improving the reliability and flexibility of the system.

[0076] Embodiment 6:

[0077] Reference Figure 1In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0078] It also includes a pressure relief pipeline 510 assembly 500, the pressure relief pipeline 510 assembly 500 includes a pressure relief pipeline 510 communicating with the input pipe 130, and a pressure relief valve 520 disposed on the pressure relief pipeline 510;

[0079] The oxygen supply gas flow meter 360 , the pressure gauge 400 , the pressure relief valve 520 , and the oxygen supply regulating valve 370 are communicatively connected to form a coupled feedback control loop of the oxygen supply regulating valve 370 and the pressure relief valve 520 .

[0080] In this embodiment, the pressure relief pipeline 510 realizes the pressure relief of the input pipe 130, and the pressure relief valve 520 is a valve provided on the pressure relief pipeline 510, which is used to control the opening and closing of the pressure relief process. When the internal pressure of the system reaches a preset safety threshold, the pressure relief valve 520 will open automatically or manually to release excess gas.

[0081] The oxygen supply gas flow meter 360, the pressure gauge 400, the pressure relief valve 520 and the oxygen supply regulating valve 370 are connected by communication to form a coupled feedback control loop to achieve precise control and safety protection of the internal pressure of the oxygen supply coating system.

[0082] The pressure gauge 400 monitors the pressure value inside the oxygen supply coating system in real time and transmits this value to the control system. After receiving the pressure data, the control system will compare it with the preset safety threshold. If the pressure value is within the safety range, the system continues to operate normally; if the pressure value exceeds the safety threshold, the control system will trigger the corresponding safety protection measures. When the pressure value is close to but has not exceeded the safety threshold, the control system can reduce the supply of oxygen by adjusting the opening of the oxygen supply control valve 370, thereby reducing the pressure inside the system. This is a preventive measure aimed at avoiding a sudden increase in pressure to a dangerous level. If the pressure value continues to rise and exceeds the safety threshold, or when the conditions for emergency pressure relief are reached, the control system will send a signal to the pressure relief valve 520 to open it quickly and release excess gas. This process is automatic and aims to quickly reduce the pressure inside the system to a safe level.

[0083] During the pressure relief process, the pressure gauge 400 continues to monitor the pressure changes inside the system and feeds back the real-time data to the control system. The control system adjusts the opening or closing time of the pressure relief valve 520 according to the feedback data to ensure that the pressure inside the system can be stably reduced to a safe range.

[0084] When the internal pressure of the system drops to a safe level, the control system will send a signal to close the pressure relief valve 520 and readjust the opening of the oxygen supply regulating valve 370 to restore the normal oxygen supply coating process.

[0085] Through this coupled feedback control loop, the oxygen supply coating system can achieve precise control and safety protection of internal pressure, ensuring the safety of equipment and operators. At the same time, this also improves the stability and reliability of the system and reduces the risk of failure and shutdown caused by excessive pressure.

[0086] Embodiment 7:

[0087] Reference Figure 1 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:

[0088] The mold 120 includes at least two main body units that can be interlocked, and a heat dissipation channel 121 is provided on the main body units; the preparation system also includes a cooling component 600, the cooling component 600 includes a cooling pipeline 610 connected to the heat dissipation channel 121, and a cooling water flow meter 620 and a cooling water valve 630 are provided on the cooling pipeline 610. The cooling component 600 also includes a temperature detection device 640 arranged on the mold 120. The temperature detection device 640, the cooling water flow meter 620 and the cooling water valve 630 are communicatively connected to form a feedback control loop of the cooling water valve 630.

[0089] In this embodiment, the mold 120 is composed of at least two body units that can be interlocked. This modular design facilitates the assembly, disassembly and maintenance of the mold 120, and also improves the flexibility and adaptability of the mold 120. Different body units can be customized according to specific product shapes and sizes to meet different production requirements.

[0090] Each body unit is provided with heat dissipation channels 121. These channels allow cooling media, such as cooling water, to flow through the inside of the mold 120, effectively absorbing and removing the heat generated by the mold 120 during the coating process. The design of the heat dissipation channels 121 should ensure that the cooling media can be evenly distributed and fully contact the surface of the mold 120 to achieve the best heat dissipation effect.

[0091] The cooling assembly 600 includes a cooling pipeline 610 connected to the heat dissipation channel 121 of the mold 120. The cooling pipeline 610 is responsible for transporting cooling water from an external water source to the inside of the mold 120 and circulating it through the heat dissipation channel 121. During the circulation process, the cooling water absorbs the heat of the mold 120 and takes it away, and then returns to the outside through the pipeline for cooling.

[0092] A cooling water flow meter 620 is provided on the cooling pipeline 610 for accurately measuring the flow of the cooling water. By monitoring the flow, it can be ensured that the cooling water flows through the mold 120 at an appropriate speed, thereby maintaining a stable heat dissipation effect.

[0093] A cooling water valve 630 is also provided on the cooling pipeline 610 to control the flow of cooling water. The valve can be adjusted in opening as required to adjust the flow rate and flow velocity of the cooling water.

[0094] The mold 120 is provided with a temperature detection device 640, such as a thermocouple or an infrared sensor, for real-time monitoring of the temperature of the mold 120. These devices can accurately transmit temperature data to the control system.

[0095] The temperature detection device 640, the cooling water flow meter 620 and the cooling water valve 630 form a feedback control loop through communication connection. In this loop, the control system will determine whether the current temperature of the mold 120 is within a safe or optimal working range based on the data provided by the temperature detection device 640. If the temperature is too high, the control system will send a signal to the cooling water valve 630 to increase the flow of cooling water to reduce the temperature of the mold 120; if the temperature is too low, the flow of cooling water will be reduced to maintain an appropriate temperature. In this way, the cooling assembly 600 can achieve precise control and regulation of the temperature of the mold 120.

[0096] Embodiment 8:

[0097] Figure 1 The embodiment of the present invention provides a method for preparing a container 10, which is applied to the container 10 preparation system in any of the above technical solutions, and the preparation method includes:

[0098] S1: The forming medium is input into the annular cavity so that the forming medium extends toward the bottom of the mold 120 under the action of gravity until the lower end of the cylindrical forming medium is closed by the cutoff of the mold 120 .

[0099] S2: Inert gas is introduced into the coupling channel until the container 10 is formed;

[0100] S3: Inputting the plasma coating mixed medium into the coupling channel, and energizing one of the input pipe 130 and the electrode 140 at the same time, so that the coupling channel ionizes the plasma coating medium passing through the coupling channel.

[0101] In this embodiment, the preparation method of the container 10 is as follows

[0102] S1: Input shaping medium into the annular cavity

[0103] Preparation stage: First, ensure that the various parts of the mold 120, including the body units that can be interlocked, have been properly assembled and fixed. The inside of the mold 120 should be clean and free of impurities to ensure the uniform distribution of the forming medium and the quality of the container 10.

[0104] Inputting forming medium: The forming medium is input into the annular cavity through the feeding system. The forming medium can be a plastic material. During the input process, the flow rate and speed of the forming medium should be controlled to ensure that it can fill the annular cavity evenly and stably.

[0105] Gravity extension: The forming medium will naturally extend to the bottom of the mold 120 under the action of gravity. At this time, the flow of the forming medium should be closely monitored and its distribution can be optimized by adjusting the input flow rate or the tilt angle of the mold 120 when necessary. When the forming medium completely covers the bottom of the mold 120 and reaches a predetermined height, the input is stopped.

[0106] Closing the mold 120: The snapping action of the mold 120 unit closes the bottom of the container 10. A closed space is formed inside the closed mold 120, which provides necessary conditions for the subsequent molding process of the container 10.

[0107] S2: Input inert gas into the coupling channel

[0108] Gas selection: Choose appropriate inert gas, such as argon, nitrogen, etc. as the molding gas. Inert gas has the characteristics of stable chemical properties and is not easy to react with other substances, which helps to protect the molding medium from external interference during the molding process.

[0109] Input gas: Inert gas is input into the coupling channel through the gas supply system. During the input process, the flow rate and pressure of the gas should be controlled to ensure that it can evenly fill the coupling channel and act on the forming medium. With the continuous input of gas, the forming medium is gradually formed into the preliminary shape of the container 10 under the pressure of the gas.

[0110] Molding monitoring: During the molding process, the shape and size changes of the container 10 should be closely monitored. If necessary, the molding effect can be optimized by adjusting parameters such as the gas flow rate, pressure, or temperature of the mold 120. When the container 10 reaches the predetermined shape and size, the inert gas input is stopped.

[0111] S3: Plasma coating media and ionization

[0112] Prepare plasma coating medium: Select the appropriate plasma coating medium, such as silicon powder, and prepare it for coating.

[0113] Input plasma coating medium: Input plasma coating mixed medium into the coupling channel.

[0114] Ionization by energization: While inputting the plasma coating medium, one of the input tube 130 or the electrode 140 is energized to ionize the plasma coating mixed medium in the coupling channel. The plasma generated during the ionization process heats and accelerates the coating medium, causing it to collide with and adhere to the surface of the container 10 at high speed. By controlling parameters such as current, voltage, and the flow rate of the coating medium, precise control of the coating thickness, uniformity, and adhesion can be achieved.

[0115] Finish coating: Plasma coating is continued until the required coating thickness and quality requirements are achieved. During the coating process, the formation of the coating and the temperature change of the container 10 should be closely monitored. If necessary, the coating parameters can be adjusted or cooling measures can be taken to ensure the smooth progress of the coating process.

[0116] Subsequent treatment: After the coating is completed, the container 10 is subjected to necessary subsequent treatment, such as cooling, cleaning, drying, etc., to remove residues and improve its surface quality. Finally, the container 10 is subjected to quality inspection and performance testing to ensure that it meets relevant standards and requirements.

[0117] It can be understood that, except for any conflicting parts, the above-mentioned embodiments 1-8 can be freely combined to form other implementation modes of the present invention.

[0118] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0119] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0120] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0121] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0122] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A container preparation system for coupled blow molding and plasma coating, characterized in that: It comprises a coupling assembly (100), wherein the coupling assembly (100) comprises a blow molding nozzle (110), a mold (120), an input pipe (130) and an electrode (140); An annular cavity is formed in the blow molding nozzle (110), and a forming cavity is formed in the mold (120), wherein the annular cavity has an annular opening facing the forming cavity, and the annular cavity is suitable for connecting to an output end of an injection molding device; The input pipe (130) penetrates the blow molding nozzle (110) from the middle of the annular cavity along the axial direction of the annular cavity and extends toward the forming cavity to form an output section, and the side wall of the output section is evenly distributed with discharge holes; the electrode (140) is arranged in the input pipe (130) and is gap-matched with the input pipe (130) so that a coupling channel with a top end closed is formed between the input pipe (130) and the electrode (140); The preparation system can switch between a blow molding state and a plasma coating state. When the preparation system is in the blow molding state, the annular cavity receives the forming medium from the injection molding device, and the coupling channel receives the inert gas; when the preparation system is in the plasma coating state, the coupling channel receives the plasma coating medium.

2. The container preparation system of coupled blow molding and plasma coating as claimed in claim 1, characterized in that: It also includes an air filling pipeline assembly (200) and an oxygen supply coating pipeline assembly (300), wherein the air filling pipeline assembly (200) is suitable for inputting an inert gas into the container (10) through the coupling channel; and the oxygen supply coating pipeline assembly (300) is suitable for inputting a mixed medium of oxygen and coating materials into the coupling channel.

3. The container preparation system of coupled blow molding and plasma coating as claimed in claim 2, characterized in that: It also includes a pressure gauge (400) connected to the input pipe (130) and suitable for measuring the pressure of the coupling channel.

4. The container preparation system of coupled blow molding and plasma coating as claimed in claim 3, characterized in that: The inflation pipeline assembly (200) comprises an inert gas cylinder (210), an inflation pump (220), an inflation valve (230) and an inflation pipeline (240); the inert gas cylinder (210) is in communication with the inflation pump (220); the inflation valve (230) is arranged on the inflation pipeline (240); and two ends of the inflation pipeline (240) are respectively in communication with the inflation pump (220) and the input pipe (130); The inflation pipeline assembly (200) further comprises an inflation stop valve (260) arranged on the inflation pipeline (240).

5. The container preparation system of coupled blow molding and plasma coating as claimed in claim 4, characterized in that: The inflation pipeline assembly (200) further comprises an inflation gas flow meter (250) disposed between the inflation pump (220) and the main pipeline and used for detecting the gas flow of the inflation pump (220); the inflation pump (220) is communicatively connected to the inflation gas flow meter (250) to form an inflation feedback control loop of the inflation pump (220).

6. The container preparation system of coupled blow molding and plasma coating as claimed in claim 5, characterized in that: The oxygen supply coating pipeline assembly (300) comprises an oxygen cylinder (310), an oxygen pump (320), a pulse generator (330), a former (340) and a raw material tank (350); The oxygen cylinder (310) is in communication with an inlet end of the oxygen pump (320); The outlet end of the former (340) is in communication with the input pipe (130); The outlet end of the raw material tank (350) is connected to the material inlet end of the former (340), and the raw material tank (350) can store silicon particles or silicon powder; A first output end and a second output end extend from the oxygen pump (320), wherein the first output end is connected to the inlet end of the pulse generator (330), and the outlet end of the pulse generator (330) is connected to the gas inlet end of the former (340); the second output end is connected to the downstream area of ​​the raw material tank (350) along which the raw material is output, so as to form a fluidized zone for forming the formed material in the downstream area of ​​the raw material tank (350).

7. The container preparation system of coupled blow molding and plasma coating as claimed in claim 6, characterized in that: The oxygen supply coating pipeline assembly (300) further comprises an oxygen supply gas flow meter (360) and an oxygen supply regulating valve (370), wherein the oxygen supply regulating valve (370) and the oxygen supply gas flow meter (360) are both arranged between the first output end and the pulse generator (330); The oxygen supply coating pipeline assembly (300) further comprises an oxygen supply coating stop valve (380) arranged between the former (340) and the input pipe (130); The oxygen supply coating pipeline assembly (300) also includes a mixed medium flow meter (390) arranged on the connecting pipe, and a discharge regulating valve (395) arranged on the outlet end of the raw material tank (350). The mixed medium flow meter (390) and the discharge regulating valve (395) are communicatively connected to form a discharge feedback control loop for adjusting the discharge regulating valve (395).

8. The container preparation system of coupled blow molding and plasma coating as claimed in claim 7, characterized in that: It also includes a pressure relief pipeline (510) assembly (500), wherein the pressure relief pipeline (510) assembly (500) includes a pressure relief pipeline (510) in communication with the input pipe (130), and a pressure relief valve (520) disposed on the pressure relief pipeline (510); The oxygen supply gas flow meter (360), the pressure gauge (400), the pressure relief valve (520) and the oxygen supply regulating valve (370) are communicatively connected to form a coupled feedback control loop of the oxygen supply regulating valve (370) and the pressure relief valve (520).

9. The container preparation system of coupled blow molding and plasma coating as claimed in claim 1, characterized in that: The mold (120) comprises at least two body units that can be interlocked, and a heat dissipation channel (121) is provided on the body units; The preparation system further comprises a cooling component (600), wherein the cooling component (600) comprises a cooling pipeline (610) connected to the heat dissipation channel (121), and a cooling water flow meter (620) and a cooling water valve (630) are provided on the cooling pipeline (610). The cooling component (600) further comprises a temperature detection device (640) arranged on the mold (120), and the temperature detection device (640), the cooling water flow meter (620) and the cooling water valve (630) are communicatively connected to form a feedback control loop of the cooling water valve (630).

10. A method for preparing a container, characterized in that: Applied to the container preparation system according to any one of claims 1 to 9, the preparation method comprises: S1: inputting a forming medium into the annular cavity so that the forming medium extends toward the bottom of the mold (120) to form a cylindrical shape under the action of gravity, until the lower end of the cylindrical forming medium is closed by being cut off by the mold (120). S2: introducing an inert gas into the coupling channel until the container (10) is formed; S3: inputting a plasma coating mixed medium into the coupling channel, and simultaneously energizing one of the input pipe (130) and the electrode (140) so that the coupling channel ionizes the plasma coating medium passing through the coupling channel.

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