Multi-station adjustable recyclable blow valve

Abstract

The utility model relates to a blowing valve technical field especially, more multi -position adjustable recyclable blowing valve, include: bottle blowing machine and bottle blowing assembly, the body of bottle blowing machine is provided with the blowing integrated assembly for installing at least one bottle blowing assembly, the blowing integrated assembly is provided with at least one gas path channel, and the gas path channel is communicated with the gas pressure of outside, the blowing integrated assembly still is provided with the air diffuser piece consistent with the number of bottle blowing assembly, and each air diffuser piece corresponds the bottle blowing assembly of corresponding, the blowing integrated assembly still is provided with the piston assembly for the plugging of gas path channel and the control device for controlling piston assembly, the blowing integrated assembly still is provided with throttle gear assembly, and throttle gear assembly can control the flow of gas in the gas path channel, and the gas path channel includes preblowing gas path channel, middle blowing gas path channel, high blowing gas path channel.

Description

Technical Field

[0001] This utility model relates to the field of air blowing valve technology, and in particular to a multi-position adjustable and recyclable air blowing valve. Background Technology

[0002] In the entire blow molding process, high-pressure air is needed to inflate the heated preform. The mold itself has internal space for the preform to expand and form. The current blow molding process uses a single independent blow molding unit. The high-pressure air in the pressure tank inflates the heated preform through the blow molding equipment. After inflation, the air pressure inside the bottle is released into the air through the blow molding machinery, thus completing the entire blow molding process. Generally, blow molding machines use either one-step or two-step blow molding processes. Both one-step and two-step blow molding processes use single-cavity blow molding. The design of single-cavity blow molding presents some new challenges, such as the volume, pressure, and time of blow molding. Single-cavity blow molding has many and complex connectors, making installation cumbersome, prone to air leakage, and space-consuming. Therefore, it can only achieve single-cavity blow molding.

[0003] Current single-cavity blow molding machines face new challenges in their blowing components, such as:

[0004] 1. Traditional single-cavity blow molding involves each cavity being an independent unit, which takes up a lot of space for the entire machine;

[0005] 2. Because we sometimes blow different types of bottles, we need to adjust the blowing flow rate. The original blowing flow rate adjustment relied on the experience of the staff.

[0006] 3. The blowing gases in the original blow molding process are all non-recyclable, resulting in excessive gas waste and insufficient energy efficiency. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a multi-position adjustable and recyclable air blowing valve.

[0008] This utility model provides a multi-station adjustable and recyclable blowing valve, comprising: a blow molding machine and blow molding components. The blow molding machine body is provided with an integrated blowing assembly for mounting at least one blow molding component. The integrated blowing assembly is provided with at least one air passage, which is connected to external air pressure. The integrated blowing assembly is also provided with air diffusers, the number of which is the same as the number of blow molding components, each air diffuser corresponding to a corresponding blow molding component. The integrated blowing assembly is also provided with a piston assembly for blocking the air passage and a control device for controlling the piston assembly. The integrated blowing assembly is also provided with a throttling gear assembly, which can control the flow of gas inside the air passage.

[0009] Preferably, the air passage includes a pre-blowing air passage, a mid-blowing air passage, and a high-blowing air passage. The pre-blowing air passage is connected to a 0-5 bar pressure tank, the mid-blowing air passage is connected to a 5-15 bar pressure tank, and the high-blowing air passage is connected to a 15-40 bar pressure tank.

[0010] Preferably, the gas dispersing component includes an exhaust port disposed on the blowing integrated assembly, with each blowing assembly corresponding to one exhaust port.

[0011] Preferably, the gas dissipation component is further provided with a muffler, which is used to reduce the noise of the exhaust port when releasing gas.

[0012] Preferably, the air-blowing integrated assembly is equipped with an air-blowing integrated cover plate for mounting the piston assembly and the control assembly, and the air-blowing integrated cover plate is mounted on the air-blowing integrated assembly via at least one quick-connect fitting.

[0013] Preferably, the piston assembly includes a piston retaining sleeve mounted on the air blowing integrated assembly and a piston mounted on the air blowing integrated cover plate, with the other end of the piston mounted on the piston retaining sleeve.

[0014] Preferably, the control component is a low-pressure solenoid valve mounted on the air-blowing integrated cover plate, the low-pressure solenoid valve can control the movement of the piston, and the number of the piston assembly and the control component is at least one.

[0015] Preferably, the throttling gear assembly includes a pre-blowing throttling seat installed on the blowing integrated assembly, and a throttling valve is installed on the pre-blowing throttling seat. The throttling valve can control the flow rate of the pre-blowing air passage. The throttling valve has at least one hole, and the diameter of each hole is different.

[0016] Preferably, the blowing assembly is a blowing block installed inside the blow molding machine, and the blow molding component is mounted on the blowing block.

[0017] Compared with related technologies, the multi-position adjustable and recyclable air blowing valve provided by this utility model has the following beneficial effects:

[0018] 1. Compared to the original design of individual valves, the original design integrates multiple independent valves onto the blow molding manifold. This unified design allows for standardized wiring of these valves, effectively saving installation space and reducing the number of gas line connectors. Installation is convenient and quick, while also reducing costs. Integrating individual valves enables multi-cavity blow molding, saves space, and simplifies and speeds up bottle adjustment, reducing setup time.

[0019] 2. The flow rate of the pre-blown air passage can be effectively controlled by the throttling device, which can improve the work efficiency and reduce the blowing time in the entire blow molding process. The original pre-blown air passage also has a throttling device, but the flow rate is adjusted by the operator's feeling. Therefore, a device with a throttling device has been designed to effectively control the flow rate of the pre-blown air passage, so that the flow rate is large, the molding speed is fast, and the work efficiency is improved.

[0020] 3. This device is designed with multiple gas passages, which can effectively recover gas by using the pre-blowing gas passage, the middle-blowing gas passage, the high-blowing gas passage, and the piston assembly and control device design, as well as the gas pressure in the bottle can be returned through gas pressure reflux, thus making it more energy-efficient.

[0021] 4. By designing multiple air channels, the same bottle can be blow-molded multiple times. The original blow molding method blow-molded the bottle with a single air pressure, which resulted in a uniform blowing time. Now, pre-blowing, medium blowing, and high blowing are performed. The pressure of high blowing can directly blow the preform into shape quickly, so the blowing time is shorter than the original blowing time. The reduction in blowing time and the increase in the yield of blow-molded products can improve the efficiency of blow molding. Attached Figure Description

[0022] Figure 1 This is a partial exploded view of the present invention;

[0023] Figure 2 This is a front view of the present invention;

[0024] Figure 3 This is a side view of the present invention.

[0025] Numbering on the map:

[0026] 1. Air blowing integrated assembly; 2. Piston retaining sleeve; 3. Piston; 4. Silencer; 5. Low-pressure solenoid valve; 6. Exhaust port;

[0027] 7. Integrated air-blowing cover; 8. Pre-blowing air passage; 9. Intermediate-blowing air passage; 10. High-blowing air passage;

[0028] 11. Throttling valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0031] Please see Figures 1 to 3 This utility model provides a multi-station adjustable and recyclable blowing valve, comprising: a blow molding machine and blow molding components. The blow molding machine body is provided with a blowing integrated component 1 for installing at least one blow molding component; the blowing integrated component 1 is provided with at least one air passage, the air passage being connected to external air pressure; the blowing integrated component 1 is also provided with air diffusers in the same number as the blow molding components, each air diffuser corresponding to a corresponding blow molding component; the blowing integrated component 1 is also provided with a piston assembly for blocking the air passage and a control device for controlling the piston assembly; the blowing integrated component 1 is also provided with a throttling gear assembly, which can control the flow of gas inside the air passage.

[0032] The air passage includes a pre-blowing air passage 8, a mid-blowing air passage 9, and a high-blowing air passage 10. The pre-blowing air passage 8 is connected to a pressure tank with a pressure of 0-5 bar, the mid-blowing air passage 9 is connected to a pressure tank with a pressure of 5-15 bar, and the high-blowing air passage 10 is connected to a pressure tank with a pressure of 15-40 bar.

[0033] The gas dissipation component includes an exhaust port 6 disposed on the blowing integrated assembly 1, with each blowing assembly corresponding to one exhaust port 6.

[0034] The exhaust component is also equipped with a muffler 4, which is used to reduce the noise of the exhaust port 6 when releasing gas.

[0035] In this embodiment, the original single-cavity blow molding process involves a separate circuit connected to an external pressure tank. The bottle is blow-molded by a switch valve. After molding, the switch valve is closed. Generally, for bottles blow-molded by a pressure tank, the internal air pressure is greater than the air pressure. The air inside the bottle after molding is usually directly discharged into the air. The above describes the original single-cavity blow molding process.

[0036] By designing pre-blown air passage 8, intermediate-blown air passage 9, and high-blown air passage 10, all connected to different pressure tanks, the process involves blow molding the heated preform. First, the preform is blown through pre-blown air passage 8, which is connected to a pressure tank with an internal pressure of 0-5 bar. Then, pre-blown air passage 8 is closed, and intermediate-blown air passage 9 is opened, connected to a pressure tank with a pressure of 5-15 bar. This completes the blow molding process. Finally, high-blown air passage 10 is closed.

[0037] At the same time, the high-pressure air passage 10 can also be connected to a pressure tank with a pressure of 15-25 bar.

[0038] It's also important to explain that designing multiple air channels for multiple blow molding processes offers advantages that differ from single-cavity blow molding. For example, when blowing up a balloon, applying excessive force might cause it to burst. However, by blowing gently first, then forcefully, and finally blowing again, the balloon is less likely to burst. This principle is applied to the blow molding process: pre-blowing, then intermediate blowing, and finally high-pressure blowing, with each blow having a higher flow rate. This is because the initial pre-blowing during preform heating causes the molecular structure within the preform to expand evenly. Close the pre-blowing air passage 8, then open the middle-blowing air passage 9 for a second middle-blowing process. The preform will expand evenly again. Then close the middle-blowing air passage 9 and open the high-blowing air passage 10 for a third high-blowing process. This results in a third expansion of the preform. The molecular structure inside the preform will expand evenly three times in succession. The advantage of this process over the original single-cavity blow molding process is that it is not a one-time molding process. Through three expansion molding processes, the molecular structure inside the preform will expand evenly, avoiding unevenness of the preform after molding and improving the quality of preform molding.

[0039] Next, the most important reflux process of this device will take place. At this time, the gas pressure inside the bottle is 15-40 bar. Close the high-blowing gas passage 10 and open the middle-blowing gas passage 9. The gas pressure in the middle-blowing gas passage 9 is 5-15 bar. The gas pressure inside the bottle is higher than the pressure in the middle-blowing gas passage 9, so the gas inside the bottle will flow back into the middle-blowing gas passage 9. At this time, the gas pressure inside the bottle is 5-15 bar. Close the middle-blowing gas passage 9 and open the pre-blowing gas passage 8. The gas pressure in the pre-blowing gas passage 8 is 0-5 bar. The gas pressure inside the bottle is higher than the pressure in the pre-blowing gas passage 8, so the gas inside the bottle will flow back into the pre-blowing gas passage 8. Then, the gas pressure inside the bottle is 0-5 bar. Close the pre-blowing gas passage 8 and then open the valve on the exhaust port 6. The 0-5 bar gas pressure inside the bottle will be released into the air.

[0040] In this embodiment, through the above process, the gas inside the bottle is 0-5 bar. Compared with the original blow molding process, when the external blow molding ends and the pressure inside the bottle is released, it will be higher than 0-5 bar, resulting in excessive noise when venting the gas. This device uses the design of exhaust port 6 and silencer 4. Exhaust port 6 can vent the gas inside the bottle, and the gas inside the bottle is released into the air through silencer 4. Because the gas inside the bottle is 0-5 bar, the sound is relatively low when venting the gas.

[0041] The air-blowing integrated assembly 1 is equipped with an air-blowing integrated cover 7 for mounting the piston assembly and control assembly. The air-blowing integrated cover 7 is mounted on the air-blowing integrated assembly 1 via at least one quick-connect fitting.

[0042] The piston assembly includes a piston retaining sleeve 2 mounted on the air blowing integrated assembly 1 and a piston 3 mounted on the air blowing integrated cover plate 7. The other end of the piston 3 is mounted on the piston retaining sleeve 2. The air blowing integrated cover plate 7 can be used to accommodate the installation of the piston assembly and control components.

[0043] The control component is a low-pressure solenoid valve 5 installed on the air-blowing integrated cover plate 7. The low-pressure solenoid valve 5 can control the movement of the piston 3. There is at least one piston assembly and control component.

[0044] In this embodiment, because the air passages are pre-blowing air passage 8, mid-blowing air passage 9, and high-blowing air passage 10, to avoid uneven airflow, the entire piston assembly and control assembly are installed near the air outlet. Figure 1As shown, the air pressure of the pre-blowing air passage 8, the intermediate-blowing air passage 9, and the high-blowing air passage 10 is consistent with the air pressure of the pressure tank. The control component is the low-pressure solenoid valve 5, which is connected to an external control system. For example, a computer can remotely control the low-pressure solenoid valve 5 via signals or other means. When the low-pressure solenoid valve 5 is open, it pulls the piston 3 backward, thus opening the piston 3 and allowing airflow to be unobstructed. When the low-pressure solenoid valve 5 is closed, it pushes the piston 3 forward, thus sealing the piston 3. By sealing or releasing the piston 3 according to different situations, multiple preforms can be blown simultaneously and efficiently, thus completing the aforementioned new process flow.

[0045] The throttling gear assembly includes a pre-blowing throttling seat installed on the blowing integrated assembly 1. A throttling valve 11 is installed on the pre-blowing throttling seat. The throttling valve 11 can control the flow rate of the pre-blowing air passage 8. The throttling valve 11 has at least one hole, and the diameter of each hole is different.

[0046] In this embodiment, the flow rate of the pre-blown air passage 8 can be effectively adjusted according to different situations through four small holes on the throttle valve 11, each with a different diameter. This improves work efficiency and reduces blowing time in the entire blow molding process. The original pre-blown air passage 8 also has a throttle device, but the flow rate adjustment was based on the operator's feel. Therefore, a device with speed settings was designed to effectively control the flow rate of the pre-blown air passage 8, resulting in a larger flow rate, faster molding speed, and improved work efficiency. This avoids relying on manual judgment, as the pre-blown size can be adjusted according to the size and material of the blown bottle, making it more compatible with the entire equipment.

[0047] The blowing assembly 1 is a blowing block installed inside the blow molding machine. The blow molding component is installed on the blowing block and is basically the same as an external ordinary single-cavity blow molding equipment.

[0048] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0049] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-position adjustable and recyclable air blowing valve, comprising: A blow molding machine and a blow molding assembly, characterized in that the body of the blow molding machine is provided with a blow molding integrated assembly (1) for mounting at least one blow molding assembly; The air blowing integrated assembly (1) is provided with at least one air passage, which is connected to the external air pressure. The air blowing integrated assembly (1) is also provided with an air diffuser in the same number as the blown bottle assembly, and each air diffuser corresponds to a corresponding blown bottle assembly. The air blowing integrated assembly (1) is also provided with a piston assembly for blocking the air passage and a control device for controlling the piston assembly. The air blowing integrated assembly (1) is also provided with a throttling gear assembly, which can control the flow of gas inside the air passage.

2. The multi-position adjustable and recyclable air blowing valve according to claim 1, characterized in that, The air passage includes a pre-blowing air passage (8), a middle-blowing air passage (9), and a high-blowing air passage (10). The pre-blowing air passage (8) is connected to a pressure tank of 0-5 bar, the middle-blowing air passage (9) is connected to a pressure tank of 5-15 bar, and the high-blowing air passage (10) is connected to a pressure tank of 15-40 bar.

3. The multi-position adjustable and recyclable air blowing valve according to claim 2, characterized in that, The gas dispersing component includes an exhaust port (6) disposed on the blowing integrated assembly (1), with each blowing assembly corresponding to one exhaust port (6).

4. The multi-position adjustable and recyclable air blowing valve according to claim 3, characterized in that, The gas dissipation component is also provided with a muffler (4), which is used to reduce the noise of the exhaust port (6) when releasing gas.

5. The multi-position adjustable and recyclable air blowing valve according to claim 1, characterized in that, The air-blowing integrated assembly (1) is equipped with an air-blowing integrated cover plate (7) for mounting the piston assembly and the control assembly. The air-blowing integrated cover plate (7) is mounted on the air-blowing integrated assembly (1) via at least one quick-connect fitting.

6. The multi-position adjustable and recyclable air blowing valve according to claim 5, characterized in that, The piston assembly includes a piston retaining sleeve (2) mounted on the air blowing integrated assembly (1) and a piston (3) mounted on the air blowing integrated cover plate (7), with the other end of the piston (3) mounted on the piston retaining sleeve (2).

7. A multi-position adjustable and recyclable air blowing valve according to claim 6, characterized in that, The control component is a low-pressure solenoid valve (5) installed on the air-blowing integrated cover plate (7). The low-pressure solenoid valve (5) can control the movement of the piston (3). The number of the piston assembly and the control component is at least one.

8. A multi-position adjustable and recyclable air blowing valve according to claim 2, characterized in that, The throttling gear assembly includes a pre-blowing throttling seat installed on the blowing integrated assembly (1), and a throttling valve (11) is installed on the pre-blowing throttling seat. The throttling valve (11) can control the flow rate of the pre-blowing air passage (8).

9. A multi-position adjustable and recyclable air blowing valve according to claim 8, characterized in that, The throttle valve (11) has at least one hole, and the diameter of each hole is different.

10. A multi-position adjustable and recyclable air blowing valve according to any one of claims 1-9, characterized in that, The blowing assembly (1) is a blowing block installed inside the blow molding machine, and the blow molding component is installed on the blowing block.

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