CN219076346U - Automatic control system for high-pressure gas injection - Google Patents
Automatic control system for high-pressure gas injection Download PDFInfo
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- CN219076346U CN219076346U CN202223537782.1U CN202223537782U CN219076346U CN 219076346 U CN219076346 U CN 219076346U CN 202223537782 U CN202223537782 U CN 202223537782U CN 219076346 U CN219076346 U CN 219076346U
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Abstract
The utility model relates to the technical field of gas control, in particular to an automatic control system for high-pressure gas injection. The technical scheme includes that the PLC control system comprises an inlet control end and an outlet control end, wherein the inlet control end comprises a filter, an air filter, a first pressure gauge, a pressure regulating valve, a speed regulating valve, a low-pressure pilot control valve, a high-pressure pilot control valve and a second pressure gauge, and output and input ends of the filter and the second pressure gauge are connected with each other; the PLC control system outlet control end comprises a buffer bottle, a proportional pressure regulating valve, a transmitter, a proportional flow valve, a high-pressure stop valve and a high-pressure relief valve, wherein the buffer bottle, the proportional pressure regulating valve, the transmitter, the proportional flow valve, the high-pressure stop valve and the high-pressure relief valve are sequentially connected. The utility model has the effect of realizing automatic control on the injection molding auxiliary gas, and can meet the technical requirement of flexible production in real time/automatically in the aspect of gas auxiliary injection molding.
Description
Technical Field
The utility model relates to the technical field of gas control, in particular to an automatic control system for high-pressure gas injection.
Background
The gas-assisted injection molding is to directly inject high-pressure gas into plastic in a mold cavity which is being plasticized through a main controller and an auxiliary controller (a sectional pressure control system), so that the inside of a plastic part is expanded to form a hollow part, and the product and the appearance are still kept intact. The high-pressure gas injection system commonly used in the gas auxiliary injection in the market at present generally works by manually adjusting pressure and flow, and cannot meet the technical requirements of flexible production in real time/automatically in the aspect of gas auxiliary injection. Aiming at the characteristic of gas auxiliary injection molding, the structure and the function of the high-pressure gas injection system are automatically controlled from the new design to the injection molding auxiliary gas, and the high-pressure gas injection automatic control system is provided.
Disclosure of Invention
The utility model aims at solving the problems in the background technology and provides an automatic control system for injecting high-pressure gas, wherein a front-end pressurizing switch, a rear-end superposition high-pressure proportional pressure valve and a high-pressure proportional flow valve are arranged at the front end.
The technical scheme of the utility model is as follows: the high-pressure gas injection automatic control system comprises a PLC control system, wherein the PLC control system comprises an inlet control end and an outlet control end, the inlet control end comprises a filter, an air filter, a first pressure gauge, a pressure regulating valve, a speed regulating valve, a low-pressure pilot control valve, a high-pressure pilot control valve and a second pressure gauge, and output and input ends of the filter and the second pressure gauge are connected with each other;
the outlet control end of the PLC control system comprises a buffer bottle, a proportional pressure regulating valve, a transmitter, a proportional flow valve, a high-pressure stop valve and a high-pressure relief valve, wherein the buffer bottle, the proportional pressure regulating valve, the transmitter, the proportional flow valve, the high-pressure stop valve and the high-pressure relief valve are sequentially connected;
the PLC control system further comprises an air drive pump, wherein the input end of the air drive pump is connected with the inlet control end, and the output end of the air drive pump is connected with the outlet control end.
Preferably, the PLC control system controls pressure and flow inputs to the inlet control end and the outlet control end.
Preferably, the transmitter, the proportional flow valve and the proportional pressure regulating valve form a self-feedback closed-loop control system.
Preferably, the filter and the pressure gauge are used for treating the inlet gas and conveying the treated gas to the gas drive pump to form high-pressure gas.
Preferably, the output end of the air-driven pump is connected with the input end of the buffer bottle.
Compared with the prior art, the utility model has the following beneficial technical effects:
1. the utility model adopts the inlet control end as the front end gas and adopts the gas drive pump to pressurize the pressure switch, and stops automatically after reaching the pressure, the outlet control end is controlled by the PLC control system, and the rear end is overlapped with the high pressure proportional pressure valve and the high pressure proportional flow valve, thus solving the problem of automatic control of the high pressure gas in the application aspect of gas auxiliary injection molding;
2. the pump/valve/meter/transmitter/controller of the present utility model is integrated together; the pressure transmitter and the proportional pressure valve form self-feedback closed-loop control; the flowmeter and the proportional flow valve form a self-feedback closed-loop system; the whole system is controlled by a PLC;
3. in conclusion, the utility model has the effect of automatically controlling the injection molding auxiliary gas, and can meet the technical requirement of flexible production in real time/automatically in the aspect of gas auxiliary injection molding.
Drawings
FIG. 1 is a schematic diagram of the control principle of the present utility model;
fig. 2 is a schematic diagram of a PLC control system.
Reference numerals: 1. a filter; 2. an air filter; 3. a first pressure gauge; 4. a pressure regulating valve; 5. a speed regulating valve; 6. a low pressure pilot control valve; 7. a high pressure pilot control valve; 8. a second pressure gauge; 9. a gas-driven pump; 10. a buffer bottle; 11. a proportional pressure regulating valve; 12. a transmitter; 13. a proportional flow valve; 14. a high pressure shut-off valve; 15. high pressure relief valve.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
Examples
As shown in fig. 1 and 2, the high-pressure gas injection automatic control system provided by the utility model comprises a PLC control system, wherein the PLC control system comprises an inlet control end and an outlet control end, and the PLC control system is used for controlling the pressure and flow input of the inlet control end and the outlet control end; the inlet control end comprises a filter 1, an air filter 2, a first pressure gauge 3, a pressure regulating valve 4, a speed regulating valve 5, a low-pressure pilot control valve 6, a high-pressure pilot control valve 7 and a second pressure gauge 8, wherein the output and input ends of the filter 1 and the second pressure gauge 8 are connected with each other; the filter 1 and the second pressure gauge 8 are used for treating the entering gas and delivering the treated gas to the gas drive pump 9 to form high-pressure gas.
The outlet control end of the PLC control system comprises a buffer bottle 10, a proportional pressure regulating valve 11, a transmitter 12, a proportional flow valve 13, a high-pressure stop valve 14 and a high-pressure relief valve 15, wherein the buffer bottle 10, the proportional pressure regulating valve 11, the transmitter 12, the proportional flow valve 13, the high-pressure stop valve 14 and the high-pressure relief valve 15 are connected in sequence; transmitter 12 and proportional flow valve 13 and proportional pressure regulating valve 11 form a self-feedback closed-loop control system.
The PLC control system further comprises an air drive pump 9, the input end of the air drive pump 9 is connected with the inlet control end, the output end of the air drive pump 9 is connected with the outlet control end, and the output end of the air drive pump 9 is connected with the input end of the buffer bottle 10.
In this embodiment, the PLC control system is configured to output the pressure and flow of the auxiliary gas, the inlet control end is connected to a gas and a driving gas with a certain pressure, the high-pressure gas injection automatic control system includes an air filter 2, a pressure gauge 3, a pressure regulating valve 4, a speed regulating valve 5, an inlet hydrogen filter 1, a gas driving pump 9, a low-pressure pilot control valve 6 and a high-pressure pilot control valve 7, and the outlet control end includes a buffer bottle 10, a proportional pressure regulating valve 11, a transmitter 12, a proportional flow valve 13, a high-pressure stop valve 14 and a high-pressure relief valve 15;
the automatic operation can be realized by connecting the driving gas and the inlet hydrogen system, the high-pressure gas is formed after passing through the gas driving pump 9 and enters the high-pressure buffer bottle 10, the system is provided with the transmitter 12 and the proportional flow valve 13, and the self-feedback closed-loop control system is formed by the high-pressure stop valve 14 and the high-pressure relief valve 15, and the automatic operation can be realized by setting the outlet pressure and the outlet flow system through the PLC.
The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.
Claims (5)
1. High-pressure gas injection automatic control system, including PLC control system, its characterized in that: the PLC control system comprises an inlet control end and an outlet control end, wherein the inlet control end comprises a filter (1), an air filter (2), a first pressure gauge (3), a pressure regulating valve (4), a speed regulating valve (5), a low-pressure pilot control valve (6), a high-pressure pilot control valve (7) and a second pressure gauge (8), and output and input ends of the filter (1) and the second pressure gauge (8) are connected with each other;
the outlet control end of the PLC control system comprises a buffer bottle (10), a proportional pressure regulating valve (11), a transmitter (12), a proportional flow valve (13), a high-pressure stop valve (14) and a high-pressure relief valve (15), wherein the buffer bottle (10), the proportional pressure regulating valve (11), the transmitter (12), the proportional flow valve (13), the high-pressure stop valve (14) and the high-pressure relief valve (15) are sequentially connected;
the PLC control system further comprises an air drive pump (9), wherein the input end of the air drive pump (9) is connected with the inlet control end, and the output end of the air drive pump (9) is connected with the outlet control end.
2. The automatic control system for high pressure gas injection of claim 1, wherein the PLC control system controls pressure and flow inputs to the inlet control side and the outlet control side.
3. The automatic control system for high-pressure gas injection according to claim 1, characterized in that said transmitter (12) and proportional flow valve (13) and proportional pressure regulating valve (11) constitute a self-feedback closed-loop control system.
4. The automatic control system for high-pressure gas injection according to claim 1, wherein the filter (1) and the pressure gauge two (8) are used for treating the inlet gas and delivering the treated gas to the gas-driven pump (9) to form high-pressure gas.
5. The automatic control system for high-pressure gas injection according to claim 1, characterized in that the output end of the gas-driven pump (9) is connected with the input end of a buffer bottle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223537782.1U CN219076346U (en) | 2022-12-29 | 2022-12-29 | Automatic control system for high-pressure gas injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223537782.1U CN219076346U (en) | 2022-12-29 | 2022-12-29 | Automatic control system for high-pressure gas injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219076346U true CN219076346U (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223537782.1U Active CN219076346U (en) | 2022-12-29 | 2022-12-29 | Automatic control system for high-pressure gas injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219076346U (en) |
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2022
- 2022-12-29 CN CN202223537782.1U patent/CN219076346U/en active Active
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