CN218581924U - Pilot control oil way for injection flow valve of die casting machine - Google Patents
Pilot control oil way for injection flow valve of die casting machine Download PDFInfo
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- CN218581924U CN218581924U CN202222870065.4U CN202222870065U CN218581924U CN 218581924 U CN218581924 U CN 218581924U CN 202222870065 U CN202222870065 U CN 202222870065U CN 218581924 U CN218581924 U CN 218581924U
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Abstract
The utility model provides a die casting machine injection flow valve pilot control oil circuit, including quick energy storage, the pressure boost energy storage, the quick proportional valve, the pressure boost proportional valve, first check valve, the second check valve, first high pressure filter and second high pressure filter, first check valve entry and quick energy storage hydraulic fluid port are connected, the second check valve entry is connected with pressure boost energy storage hydraulic fluid port, first high pressure filter entry respectively with first check valve export, second check valve exit linkage, first high pressure filter export respectively with the quick proportional valve pilot valve, the pressure boost proportional valve pilot valve, second high pressure filter entry links to each other. The utility model discloses a press the pressure oil of jet flow valve pilot control oil circuit simultaneously from quick energy storage ware and booster energy storage ware, as long as the pressure oil of arbitrary energy storage ware has not been released, the homoenergetic guarantees to press to penetrate to be full of pressure oil in the flow valve pilot control oil circuit, presses to penetrate the flow valve and is in controlled state, can not cause the machine malfunction, and it has simple structure, dependable performance, characteristics that low in manufacturing cost.
Description
Technical Field
The utility model relates to a die casting machine, in particular to flow valve pilot control oil circuit is penetrated to pressure of die casting machine.
Background
Injection flow valves of large-scale machines or high-end machines of die casting machines are basically configured as proportional valves and servo valves (for example, a hydraulic system for a die casting machine disclosed in chinese patent document No. CN208057587U in 2018, 11 and 6). However, the cleanliness of the oil liquid of the valve is required to be high, so that a pilot oil way needs to be additionally arranged to control the valve, and the arrangement of the pilot oil way mainly adopts three schemes, namely, a hydraulic oil source is independently arranged to provide pressure oil for the pilot oil way; the second scheme is that each valve is independently provided with a filter, and pressure oil is led from respective energy accumulators to be supplied to pilot oil paths of the valves; the third scheme is to intensively lead pressure oil from a quick energy accumulator or a pressurization energy accumulator to supply to pilot oil paths of all injection flow valves, and the three schemes have defects: the scheme I and the scheme II have complex structures and high cost; in the third scheme, when the oil-leading energy storage device has no pressure oil or the pressure is lower, the flow control valve of the other energy storage device is opened because of no control of the pilot pressure oil, the pressure oil of the energy storage device is released, misoperation is generated, and even personal and property loss is caused.
Therefore, further improvements are necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flow valve pilot control oil circuit is penetrated to die casting machine pressure that simple structure is reasonable, dependable performance, low in manufacturing cost, debugging easy maintenance, practicality are strong to overcome the weak point among the prior art.
The pilot control oil path of the injection flow valve of the die casting machine designed according to the purpose comprises a quick energy accumulator, a pressurization energy accumulator, a quick proportional valve and a pressurization proportional valve, and is characterized in that: the hydraulic control system is characterized by further comprising a first one-way valve, a second one-way valve, a first high-pressure filter and a second high-pressure filter, wherein the inlet of the first one-way valve is connected with the oil port of the quick energy accumulator, the inlet of the second one-way valve is connected with the oil port of the booster energy accumulator, the inlet of the first high-pressure filter is connected with the outlet of the first one-way valve and the outlet of the second one-way valve respectively, and the outlet of the first high-pressure filter is connected with the pilot valve of the quick proportional valve, the pilot valve of the booster proportional valve and the inlet of the second high-pressure filter respectively.
Still include fast servo valve and the third check valve of arranging, the export of second high pressure filter links to each other with the third check valve entry, and the third check valve export links to each other with fast servo valve pilot valve of arranging.
And an energy accumulator is arranged on a pipeline connecting the outlet of the third one-way valve and the pilot valve of the quick-discharge servo valve.
And a pressure gauge is also arranged on a pipeline connecting the outlet of the third one-way valve and the pilot valve of the quick-discharge servo valve.
Still include the oil tank, still be provided with the stop valve that links to each other with the oil tank on the pipeline that the third check valve export links to each other with the quick-release servo valve pilot valve.
The filtration accuracy of the second high pressure filter is higher than that of the first high pressure filter.
The utility model discloses a die casting machine is penetrated flow valve pilot control oil circuit and is drawn pressure flow valve pilot control oil circuit's pressure oil through following quick energy storage ware and booster energy storage ware simultaneously, as long as the pressure oil of arbitrary energy storage ware has not been released, the homoenergetic guarantees to penetrate and is full of pressure oil in the flow valve pilot control oil circuit, penetrates the flow valve and is in controlled state, can not cause the machine malfunction, and it has simple structure reasonable, dependable performance, characteristics that manufacturing cost is low.
Drawings
Fig. 1 is an embodiment of the pilot control oil path diagram of the injection flow valve of the die casting machine.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1, this die casting machine injection flow valve pilot control oil circuit, including quick energy storage 1, pressure boost energy storage 2, quick proportional valve 3, pressure boost proportional valve 4, first check valve 6, second check valve 7, first high pressure filter 8 and second high pressure filter 9, 6 entrances of first check valve are connected with 1 hydraulic fluid port of quick energy storage, 7 entrances of second check valve are connected with 2 hydraulic fluid ports of pressure boost energy storage, 8 entrances of first high pressure filter respectively with 6 exports of first check valve, 7 exit linkage of second check valve, 8 exports of first high pressure filter respectively with 3 pilot valves of quick proportional valve, 4 pilot valves of pressure boost proportional valve, 9 entrances of second high pressure filter link to each other.
The high-pressure filter is characterized by further comprising a quick-discharge servo valve 5 and a third one-way valve 10, an outlet of the second high-pressure filter 9 is connected with an inlet of the third one-way valve 10, and an outlet of the third one-way valve 10 is connected with a pilot valve of the quick-discharge servo valve 5.
An energy accumulator 11 is arranged on a pipeline connecting an outlet of the third one-way valve 10 and a pilot valve of the quick-discharge servo valve 5.
A pressure gauge 12 is also arranged on a pipeline connecting the outlet of the third one-way valve 10 and the pilot valve of the quick-discharge servo valve 5.
The quick-release servo valve further comprises an oil tank 14, and a stop valve 13 connected with the oil tank 14 is further arranged on a pipeline connecting an outlet of the third one-way valve 10 and a pilot valve of the quick-release servo valve 5.
The filtering precision of the second high-pressure filter 9 is higher than that of the first high-pressure filter 8, and cleaner pressure oil is provided for the quick-discharge servo valve 5 after twice filtering.
The third check valve 10 is used for avoiding the impact of the frequent and rapid actions of the pilot valve of the quick-discharge servo valve 5 on the first high-pressure filter 8, the second high-pressure filter 9, the quick proportional valve 3 and the booster proportional valve 4.
The accumulator 11 is arranged for avoiding abnormal oil supply due to the long distance between the quick accumulator 1 and the boost accumulator 2 and the quick discharge servo valve 5, and is used for storing oil.
The pressure gauge 12 is convenient for observing whether the pressure oil of the pilot control oil path of the injection flow valve is normal or not.
The cut-off valve 13 is used for discharging pressure oil of a pilot control oil path of the injection flow valve during maintenance.
The working principle of the pilot control oil way of the injection flow valve of the die casting machine is as follows:
the first check valve 6 is arranged at the oil port of the quick energy accumulator 1, the second check valve 7 is arranged at the oil port of the pressure-increasing energy accumulator 2, pressure oil of two groups of energy accumulators is led into the first high-pressure filter 8, the pressure oil of any energy accumulator has high pressure, namely the pressure oil is led from the energy accumulator to be provided to a pilot control oil path of the pressure injection flow valve, the pressure injection flow valve is ensured to be in a controlled state before the pressure of any energy accumulator is released, and the situation that the pressure oil of the pressure injection flow valve is not controlled and is opened out of control to enable the pressure oil of the energy accumulator to enter the pressure injection cylinder or the pressure cylinder due to the fact that the pressure oil of the energy accumulator is not released completely is avoided, and the pressure injection piston rod is pushed to extend out to cause personal and property loss.
The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and the scope of the invention is to be protected. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a die casting machine injection flow valve pilot control oil circuit, includes quick energy storage ware (1), pressure boost energy storage ware (2), quick proportional valve (3), pressure boost proportional valve (4), its characterized in that: still include first check valve (6), second check valve (7), first high pressure filter (8) and second high pressure filter (9), first check valve (6) entry and quick energy storage ware (1) hydraulic fluid port are connected, second check valve (7) entry and pressure boost energy storage ware (2) hydraulic fluid port are connected, first high pressure filter (8) entry respectively with first check valve (6) export, second check valve (7) exit linkage, first high pressure filter (8) export respectively with quick proportional valve (3) pilot valve, pressure boost proportional valve (4) pilot valve, second high pressure filter (9) entry links to each other.
2. The die casting machine shot flow valve pilot control oil circuit as defined in claim 1, wherein: the high-pressure filter is characterized by further comprising a quick-discharge servo valve (5) and a third one-way valve (10), an outlet of the second high-pressure filter (9) is connected with an inlet of the third one-way valve (10), and an outlet of the third one-way valve (10) is connected with a pilot valve of the quick-discharge servo valve (5).
3. The die casting machine shot flow valve pilot control oil circuit of claim 2, characterized in that: an energy accumulator (11) is arranged on a pipeline connecting an outlet of the third one-way valve (10) and a pilot valve of the quick-discharge servo valve (5).
4. The die casting machine shot flow valve pilot control oil circuit of claim 2, wherein: a pressure gauge (12) is also arranged on a pipeline connecting the outlet of the third one-way valve (10) and the pilot valve of the quick-discharge servo valve (5).
5. The die casting machine shot flow valve pilot control oil circuit of claim 2, characterized in that: the hydraulic control system is characterized by further comprising an oil tank (14), and a stop valve (13) connected with the oil tank (14) is further arranged on a pipeline connected with an outlet of the third one-way valve (10) and a pilot valve of the quick-discharge servo valve (5).
6. The die casting machine shot flow valve pilot control oil circuit as defined in claim 1, wherein: the filtration accuracy of the second high-pressure filter (9) is higher than that of the first high-pressure filter (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222870065.4U CN218581924U (en) | 2022-10-28 | 2022-10-28 | Pilot control oil way for injection flow valve of die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222870065.4U CN218581924U (en) | 2022-10-28 | 2022-10-28 | Pilot control oil way for injection flow valve of die casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218581924U true CN218581924U (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222870065.4U Active CN218581924U (en) | 2022-10-28 | 2022-10-28 | Pilot control oil way for injection flow valve of die casting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218581924U (en) |
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2022
- 2022-10-28 CN CN202222870065.4U patent/CN218581924U/en active Active
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Address after: No.6, Wusha section, Shunfan Road, Wusha community, Daliang Street office, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong Liansheng Precision Intelligent Equipment Technology Co.,Ltd. Address before: No.6, Wusha section, Shunfan Road, Wusha community, Daliang Street office, Shunde District, Foshan City, Guangdong Province Patentee before: LANSON PRECISION MACHINERY CO.,LTD. |