CN204054563U - A kind of use two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit - Google Patents
A kind of use two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit Download PDFInfo
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- CN204054563U CN204054563U CN201420379391.8U CN201420379391U CN204054563U CN 204054563 U CN204054563 U CN 204054563U CN 201420379391 U CN201420379391 U CN 201420379391U CN 204054563 U CN204054563 U CN 204054563U
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Abstract
The utility model discloses the hydraulic circuit that a kind of use two cartridge valve controlled liquefaction cylinders are differential and cushion, plug-in pressure valve and plug-in direction valve are installed above valve block, plug-in pressure valve comprises the first plug-in mounting spool and the first plug-in mounting valve gap that are wholely set, first plug-in mounting spool is positioned at valve block, first plug-in mounting valve gap is positioned on valve block, overflow valve is fixedly mounted in the first plug-in mounting valve gap, plug-in direction valve comprises the second plug-in mounting spool and the second plug-in mounting valve gap that are wholely set, second plug-in mounting spool is positioned at valve block, second plug-in mounting valve gap is positioned on valve block, first solenoid directional control valve is fixedly mounted on the first inserted valve and covers, second solenoid directional control valve is fixedly mounted on the second inserted valve and covers, its advantage be due to plug-in pressure valve and plug-in direction valve compared to electromagnetic relief valve and electro-hydraulic reversing valve volume little, the valve block of these hydraulic valves of installation is amassed greatly reduce, the cost of inserted valve own is lower, and valve block is long-pending to be reduced greatly, reduces production cost.
Description
Technical field
The utility model relates to the hydraulic circuit of the differential and buffering of a kind of control oil cylinder of injection machine, the hydraulic circuit of the differential and buffering of especially a kind of use two cartridge valve controlled liquefaction cylinders.
Background technology
Injection machine is generally made up of parts such as injecting systems, Clamping System, Hydraulic Power Transmission Systems, the effect of Hydraulic Power Transmission System realizes injection machine to provide power by the various actions required by technical process, and meet the requirement of pressure, speed, temperature etc. needed for injection machine each several part.At present in hydraulic system, generally adopt an electro-hydraulic reversing valve and an electromagnetic relief valve to control the hydraulic circuit that oil cylinder is differential and cushion, as shown in Figure 1, V1 is the electro-hydraulic reversing valve controlling folding mould, V2 is the electromagnetic relief valve controlling buffering, and V3 controls the differential electro-hydraulic reversing valve of matched moulds.Electromagnetic relief valve V2 is connected with electro-hydraulic reversing valve V3 by electro-hydraulic reversing valve V1, and the hydraulic fluid port B3 of electro-hydraulic reversing valve V3 is communicated with cylinder rod chamber, and the oil inlet P 3 of electro-hydraulic reversing valve V3 is communicated with oil cylinder rodless cavity with the hydraulic fluid port A1 of electro-hydraulic reversing valve V1 simultaneously.Electro-hydraulic reversing valve V1, electromagnetic relief valve V2 and electro-hydraulic reversing valve V3 are arranged in a valve block, and connect into a hydraulic circuit by the oil line pipe in valve block, and valve block is made up of steel.There is following problem in the hydraulic circuit of this structure: 1. because electro-hydraulic reversing valve V1, electromagnetic relief valve V2 and the volume of electro-hydraulic reversing valve V3 own are large, makes the valve block of these three kinds of valves of installation long-pending large; 2. due to electro-hydraulic reversing valve V1, electromagnetic relief valve V2 and electro-hydraulic reversing valve V3 price comparison high, and the steel use amount manufacturing valve block is large, thus makes this hydraulic circuit production cost high.
Summary of the invention
Technical problem to be solved in the utility model is to provide that a kind of volume is little, compact conformation and lower-cost use two cartridge valve controlled liquefaction cylinders are differential and the hydraulic circuit of buffering.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of use two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit, comprise electro-hydraulic reversing valve and electromagnetic relief valve, described electro-hydraulic reversing valve is arranged in a valve block, described electromagnetic relief valve is made up of the first solenoid directional control valve and overflow valve, plug-in pressure valve and plug-in direction valve are installed above described valve block, described plug-in pressure valve comprises the first plug-in mounting spool and the first plug-in mounting valve gap that are wholely set, the first described plug-in mounting spool is positioned at described valve block, the first described plug-in mounting valve gap is positioned on described valve block, described overflow valve is fixedly mounted in the first described plug-in mounting valve gap, described plug-in direction valve comprises the second plug-in mounting spool and the second plug-in mounting valve gap that are wholely set, the second described plug-in mounting spool is positioned at described valve block, the second described plug-in mounting valve gap is positioned on described valve block, the first described solenoid directional control valve is fixedly mounted on the first described inserted valve and covers, second solenoid directional control valve is fixedly mounted on the second described inserted valve and covers.
Also comprise oil cylinder, many oil line pipes are provided with in described valve block, described electro-hydraulic reversing valve is connected with described oil cylinder with described plug-in pressure valve, described plug-in direction valve, the second solenoid directional control valve respectively by described oil line pipe, described plug-in direction valve is connected with the second described solenoid directional control valve with described oil cylinder by described oil line pipe, and the second described solenoid directional control valve is connected with described electromagnetic relief valve by oil line pipe.Electro-hydraulic reversing valve, plug-in pressure valve, plug-in direction valve, electromagnetic relief valve, the second solenoid directional control valve is made to be communicated with the complete hydraulic circuit of formation one with oil cylinder by oil line pipe.Wherein electromagnetic relief valve is the pilot reversing valve of plug-in pressure valve, electromagnetic relief valve controls pressure and the direction change of the first plug-in mounting spool, second solenoid directional control valve is the pilot reversing valve of plug-in direction valve, second solenoid directional control valve controls the second plug-in mounting spool direction change, plug-in pressure valve plays the effect of buffering, and plug-in direction valve plays differential effect.
The oil-out T1 of described electro-hydraulic reversing valve is communicated with by the hydraulic fluid port A2 of oil line pipe with described plug-in pressure valve, the hydraulic fluid port A1 of described electro-hydraulic reversing valve and the hydraulic fluid port A3 of described plug-in direction valve is parallel to the rod chamber of described oil cylinder by oil line pipe, the hydraulic fluid port B1 of described electro-hydraulic reversing valve and the hydraulic fluid port B3 of described plug-in direction valve is parallel to the rodless cavity of described oil cylinder by oil line pipe, the hydraulic fluid port C2 of described plug-in pressure valve is communicated with the main oil inlet P 5 of described electromagnetic relief valve by oil line pipe, the hydraulic fluid port C3 of described plug-in direction valve is communicated with the hydraulic fluid port A4 of the second solenoid directional control valve by oil line pipe, the oil-out T4 of the second described solenoid directional control valve, the control hydraulic fluid port K1 of described electro-hydraulic reversing valve and the hydraulic fluid port B2 of described plug-in pressure valve is parallel on oil-out T by oil line pipe, the oil inlet P 4 of the second described solenoid directional control valve and the oil inlet P 1 of described electro-hydraulic reversing valve are parallel in oil inlet P by oil line pipe, the hydraulic fluid port B4 of the second described solenoid directional control valve is communicated with the main oil-out T5 of described electromagnetic relief valve.
The oil-out T6 of the first described solenoid directional control valve and the oil-out T7 of described overflow valve is parallel on main oil-out T5, and the hydraulic fluid port B6 of the first described solenoid directional control valve and the oil inlet P 7 of described overflow valve are parallel in main oil inlet P 5.The hydraulic oil that first solenoid directional control valve controls plug-in pressure valve flows to, and overflow valve controls the internal pressure change of plug-in pressure valve.
Compared with prior art, the utility model has the advantage of that plug-in pressure valve substitutes traditional electromagnetic relief valve and realizes oil circuit buffering, plug-in direction valve substitutes traditional electro-hydraulic reversing valve, and to realize oil circuit differential, the volume of plug-in pressure valve and plug-in direction valve is less than the volume of electromagnetic relief valve and electro-hydraulic reversing valve, make installation electro-hydraulic reversing valve, plug-in direction valve and the valve block needed for plug-in pressure valve long-pending reduction, compact conformation greatly, and overflow valve is arranged in the first plug-in mounting valve gap, make rational use of resources, make hydraulic loop structure compacter; Plug-in pressure valve and the cost of plug-in direction valve own lower, and valve block is long-pending greatly reduces, and reduces production cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of prior art;
Fig. 2 is schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
Two the cartridge valve controlled liquefaction cylinders of a kind of use as shown in Figure 2 differential and buffering hydraulic circuit, comprise electro-hydraulic reversing valve 1 and electromagnetic relief valve 2, electro-hydraulic reversing valve 1 is arranged in a valve block 3, electromagnetic relief valve 2 is made up of the first solenoid directional control valve 21 and overflow valve 22, plug-in pressure valve 4 and plug-in direction valve 5 are installed above valve block 3, plug-in pressure valve 4 comprises the first plug-in mounting spool 41 and the first plug-in mounting valve gap 42 be wholely set, first plug-in mounting spool 41 is positioned at valve block 3, first plug-in mounting valve gap 42 is positioned on valve block 3, overflow valve 22 is fixedly mounted in the first plug-in mounting valve gap 42, plug-in direction valve 5 comprises the second plug-in mounting spool 51 and the second plug-in mounting valve gap 52 be wholely set, second plug-in mounting spool 51 is positioned at valve block 3, second plug-in mounting valve gap 52 is positioned on valve block 3, first solenoid directional control valve 21 is fixedly mounted on the first plug-in mounting valve gap 42, second solenoid directional control valve 6 is fixedly mounted on the second plug-in mounting valve gap 52.
In this particular embodiment, also comprise oil cylinder 7, many oil line pipes are provided with in valve block 3, electro-hydraulic reversing valve 1 is connected with oil cylinder 7 with plug-in pressure valve 4, plug-in direction valve 5, second solenoid directional control valve 6 respectively by oil line pipe, plug-in direction valve 5 is connected with the second solenoid directional control valve 6 with oil cylinder 7 by oil line pipe, and the second solenoid directional control valve 6 is connected with electromagnetic relief valve 2 by oil line pipe.
In this particular embodiment, the oil-out T1 of electro-hydraulic reversing valve 1 is communicated with the hydraulic fluid port A2 of plug-in pressure valve 4 by oil line pipe, the hydraulic fluid port A1 of the electro-hydraulic reversing valve 1 and hydraulic fluid port A3 of plug-in direction valve 5 is parallel to the rod chamber 71 of oil cylinder 7 by oil line pipe, the hydraulic fluid port B1 of the electro-hydraulic reversing valve 1 and hydraulic fluid port B3 of plug-in direction valve 5 is parallel to the rodless cavity 72 of oil cylinder 7 by oil line pipe, the hydraulic fluid port C2 of plug-in pressure valve 4 is communicated with the main oil inlet P 5 of electromagnetic relief valve 2 by oil line pipe, the hydraulic fluid port C3 of plug-in direction valve 5 is communicated with by the hydraulic fluid port A4 of oil line pipe with the second solenoid directional control valve 6, the oil-out T4 of the second solenoid directional control valve 6, the control hydraulic fluid port K1 of the electro-hydraulic reversing valve 1 and hydraulic fluid port B2 of plug-in pressure valve 4 is parallel on oil-out T by oil line pipe, the oil inlet P 4 of the second solenoid directional control valve 6 and the oil inlet P 1 of electro-hydraulic reversing valve 1 are parallel in oil inlet P by oil line pipe, the hydraulic fluid port B4 of the second solenoid directional control valve 6 is connected with the main oil-out T5 of electromagnetic relief valve 2.
The oil-out T6 of the first solenoid directional control valve 21 and oil-out T7 of overflow valve 22 is parallel on main oil-out T5, and the hydraulic fluid port B6 of the first solenoid directional control valve 21 and the oil inlet P 7 of overflow valve 22 are parallel in main oil inlet P 5.
Claims (4)
1. the hydraulic circuit of an and buffering differential with two cartridge valve controlled liquefaction cylinders, comprise electro-hydraulic reversing valve and electromagnetic relief valve, described electro-hydraulic reversing valve is arranged in a valve block, described electromagnetic relief valve is made up of the first solenoid directional control valve and overflow valve, it is characterized in that, above described valve block, plug-in pressure valve and plug-in direction valve are installed, described plug-in pressure valve comprises the first plug-in mounting spool and the first plug-in mounting valve gap that are wholely set, the first described plug-in mounting spool is positioned at described valve block, the first described plug-in mounting valve gap is positioned on described valve block, described overflow valve is fixedly mounted in the first described plug-in mounting valve gap, described plug-in direction valve comprises the second plug-in mounting spool and the second plug-in mounting valve gap that are wholely set, the second described plug-in mounting spool is positioned at described valve block, the second described plug-in mounting valve gap is positioned on described valve block, the first described solenoid directional control valve is fixedly mounted on the first described inserted valve and covers, second solenoid directional control valve is fixedly mounted on the second described inserted valve and covers.
2. a kind of use according to claim 1 two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit, characterized by further comprising oil cylinder, many oil line pipes are provided with in described valve block, described electro-hydraulic reversing valve by described oil line pipe respectively with described plug-in pressure valve, described plug-in direction valve, second solenoid directional control valve is connected with described oil cylinder, described plug-in direction valve is connected with the second described solenoid directional control valve with described oil cylinder by described oil line pipe, the second described solenoid directional control valve is connected with described electromagnetic relief valve by oil line pipe.
3. a kind of use according to claim 2 two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit, it is characterized in that the oil-out T1 of described electro-hydraulic reversing valve is communicated with by the hydraulic fluid port A2 of oil line pipe with described plug-in pressure valve, the hydraulic fluid port A1 of described electro-hydraulic reversing valve and the hydraulic fluid port A3 of described plug-in direction valve is parallel to the rod chamber of described oil cylinder by oil line pipe, the hydraulic fluid port B1 of described electro-hydraulic reversing valve and the hydraulic fluid port B3 of described plug-in direction valve is parallel to the rodless cavity of described oil cylinder by oil line pipe, the hydraulic fluid port C2 of described plug-in pressure valve is communicated with the main oil inlet P 5 of described electromagnetic relief valve by oil line pipe, the hydraulic fluid port C3 of described plug-in direction valve is communicated with the hydraulic fluid port A4 of the second solenoid directional control valve by oil line pipe, the oil-out T4 of the second described solenoid directional control valve, the control hydraulic fluid port K1 of described electro-hydraulic reversing valve and the hydraulic fluid port B2 of described plug-in pressure valve is parallel on oil-out T by oil line pipe, the oil inlet P 4 of the second described solenoid directional control valve and the oil inlet P 1 of described electro-hydraulic reversing valve are parallel in oil inlet P by oil line pipe, the hydraulic fluid port B4 of the second described solenoid directional control valve is communicated with the main oil-out T5 of described electromagnetic relief valve.
4. a kind of use according to claim 3 two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit, it is characterized in that the oil-out T6 of the first described solenoid directional control valve and the oil-out T7 of described overflow valve is parallel on main oil-out T5, the hydraulic fluid port B6 of the first described solenoid directional control valve and the oil inlet P 7 of described overflow valve are parallel in main oil inlet P 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379391.8U CN204054563U (en) | 2014-07-10 | 2014-07-10 | A kind of use two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379391.8U CN204054563U (en) | 2014-07-10 | 2014-07-10 | A kind of use two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204054563U true CN204054563U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420379391.8U Expired - Fee Related CN204054563U (en) | 2014-07-10 | 2014-07-10 | A kind of use two cartridge valve controlled liquefaction cylinders differential and buffering hydraulic circuit |
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| CN (1) | CN204054563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183426A (en) * | 2021-12-06 | 2022-03-15 | 徐州阿马凯液压技术有限公司 | Regenerative hydraulic valve with pressure selection function |
-
2014
- 2014-07-10 CN CN201420379391.8U patent/CN204054563U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183426A (en) * | 2021-12-06 | 2022-03-15 | 徐州阿马凯液压技术有限公司 | Regenerative hydraulic valve with pressure selection function |
| CN114183426B (en) * | 2021-12-06 | 2024-02-02 | 徐州阿马凯液压技术有限公司 | Regenerative hydraulic valve with pressure selection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO JINGQIONG MACHINERY MANUFACTURING CO. LTD. Free format text: FORMER NAME: NINGBO NEW HAITAI PLASTIC MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 315113 Zhejiang city of Ningbo province Yinzhou District east Wu Village Patentee after: NINGBO JINGQIONG MACHINERY MANUFACTURING CO., LTD. Address before: 315113 Zhejiang city of Ningbo province Yinzhou District east Wu Village Patentee before: Ningbo Xinhaitai Plastic Machinery Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20200710 |