CN105437483A - Leakage-free hydraulic self-locking loop for injection machine mold locking - Google Patents
Leakage-free hydraulic self-locking loop for injection machine mold locking Download PDFInfo
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- CN105437483A CN105437483A CN201410512460.2A CN201410512460A CN105437483A CN 105437483 A CN105437483 A CN 105437483A CN 201410512460 A CN201410512460 A CN 201410512460A CN 105437483 A CN105437483 A CN 105437483A
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- valve
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- locking
- opening
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- Check Valves (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention discloses a leakage-free hydraulic self-locking loop for injection machine mold locking. The leakage-free hydraulic self-locking loop comprises an opening/closing mold oil cylinder, a cartridge inserted valve and a fuel tank. A first main oil opening of the cartridge inserted valve is communicated with a rod chamber of the opening/closing mold oil cylinder. The leakage-free hydraulic self-locking loop also comprises an electromagnetic one-way valve and a shuttle valve. A work oil opening of the electromagnetic one-way valve is communicated with a control port of the cartridge inserted valve. An oil inlet of the electromagnetic one-way valve is communicated with an oil outlet of the shuttle valve. An oil outlet of the electromagnetic one-way valve is communicated with the fuel tank. A first oil inlet of the shuttle valve is communicated with the rod chamber of the opening/closing mold oil cylinder. A second oil inlet of the shuttle valve is communicated with a second main oil opening of the cartridge inserted valve. Through cooperation of the shuttle valve and the electromagnetic one-way valve, a leakage-free self-locking process is finished whether if large pressure difference between the first main oil opening and the second main oil opening of the cartridge inserted valve exists. The leakage-free hydraulic self-locking loop has the advantages of fast switching speed and fast response speed. The leakage-free hydraulic self-locking loop is free of a booster pump used in the traditional hydraulic self-locking loop, does not need other extraneous energy and has energy saving effects.
Description
Technical field
The present invention relates to a kind of hydraulic pressure locked loop of injection machine, especially a kind of No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking.
Background technology
Injection machine thermoplastic or thermosetting plastics is utilized mould for plastics to make the main former of the plastic products of various shape.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.Existing hydraulic injection molding machine locked loop easily produces oil pressure and leaks, and can cause the locked mode pressure instability of injection machine, affect injection moulding machine mode-locking effect; Traditional solution adds booster pump in hydraulic pressure self-locking circuit, with the system liquid pressure in supplementary hydraulic pressure self-locking circuit.But in use, booster pump itself needs the external world to provide energy to work, cause power consumption large.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of switch speed fast, without internal leakage and the energy-conservation No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking, comprise folding mould oil cylinder, inserted valve and fuel tank, first main hydraulic fluid port of described inserted valve is connected with the rod chamber of described folding mould oil cylinder, also comprise electromagnetism check valve and shuttle valve, the actuator port of described electromagnetism check valve is connected with the control mouth of described inserted valve, the oil-in of described electromagnetism check valve is connected with the oil-out of described shuttle valve, the oil-out of described electromagnetism check valve is connected with described fuel tank, first oil-in of described shuttle valve is connected with the rod chamber of described folding mould oil cylinder, second oil-in of described shuttle valve is connected with the second main hydraulic fluid port of described inserted valve.
Also comprise overflow valve, the oil-in of described overflow valve is connected with the actuator port of described electromagnetism check valve, the control mouth of described inserted valve respectively, and the oil-out of described overflow valve is connected with described fuel tank.Overflow valve is for controlling the upper pressure limit position of inserted valve, and the piston rod not splitting die cylinder during to guarantee that external force is larger causes damage.
Compared with prior art, the invention has the advantages that to be obtained by electromagnetism check valve and electricly make inserted valve self-locking, ensure that the piston position of folding mould oil cylinder is constant, and shuttle valve and electromagnetism check valve with the use of, can No leakage self-locking to guarantee whether first of inserted valve the main hydraulic fluid port and the second main hydraulic fluid port exist larger pressure reduction; And this hydraulic pressure self-locking circuit have switch speed fast, respond fast advantage; In addition, this No leakage hydraulic pressure self-locking circuit eliminates the booster pump in traditional hydraulic pressure self-locking circuit, provides other energy, have energy-conservation advantage without the need to the external world.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
A kind of No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking as shown in Figure 1, comprise folding mould oil cylinder 1, inserted valve 2, fuel tank 3, electromagnetism check valve 4, shuttle valve 5 and overflow valve 6, first main hydraulic fluid port B1 of inserted valve 2 is connected with the rod chamber 7 of folding mould oil cylinder 1, the actuator port A of electromagnetism check valve 4 is connected with the control mouth C of inserted valve 2, the oil inlet P 1 of electromagnetism check valve 4 is connected with the oil-out T2 of shuttle valve 5, the oil-out T1 of electromagnetism check valve 4 is connected with fuel tank 3, first oil inlet P 2 of shuttle valve 5 is connected with the rod chamber 7 of folding mould oil cylinder 1, second oil inlet P 3 of shuttle valve 5 is connected with the second main hydraulic fluid port B2 of inserted valve 2, the oil inlet P 4 of overflow valve 6 respectively with the actuator port A of electromagnetism check valve 4, the control mouth C of inserted valve 2 is connected, the oil-out T3 of overflow valve 6 is connected with fuel tank 3.
In above-described embodiment, the course of work of this No leakage hydraulic pressure self-locking circuit is: after the piston movement in folding mould oil cylinder 1 puts in place, and electromagnetism check valve 4 electricly must make inserted valve 2 self-locking, guarantees that the piston position in folding mould oil cylinder 1 is constant.Shuttle valve 5 and electromagnetism check valve 4 with the use of, can No leakage self-locking to guarantee whether the main hydraulic fluid port B1 of inserted valve 2 first and the second main hydraulic fluid port B2 exists larger pressure reduction.Overflow valve 6 controls the upper pressure limit position of inserted valve 2, when guaranteeing that the external force of promotion piston rod is larger, does not cause damage to piston rod.
Claims (2)
1. the No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking, comprise folding mould oil cylinder, inserted valve and fuel tank, first main hydraulic fluid port of described inserted valve is connected with the rod chamber of described folding mould oil cylinder, characterized by further comprising electromagnetism check valve and shuttle valve, the actuator port of described electromagnetism check valve is connected with the control mouth of described inserted valve, the oil-in of described electromagnetism check valve is connected with the oil-out of described shuttle valve, the oil-out of described electromagnetism check valve is connected with described fuel tank, first oil-in of described shuttle valve is connected with the rod chamber of described folding mould oil cylinder, second oil-in of described shuttle valve is connected with the second main hydraulic fluid port of described inserted valve.
2. a kind of No leakage hydraulic pressure self-locking circuit for injection moulding machine mode-locking according to claim 1, characterized by further comprising overflow valve, the oil-in of described overflow valve is connected with the actuator port of described electromagnetism check valve, the control mouth of described inserted valve respectively, and the oil-out of described overflow valve is connected with described fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512460.2A CN105437483A (en) | 2014-09-29 | 2014-09-29 | Leakage-free hydraulic self-locking loop for injection machine mold locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410512460.2A CN105437483A (en) | 2014-09-29 | 2014-09-29 | Leakage-free hydraulic self-locking loop for injection machine mold locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105437483A true CN105437483A (en) | 2016-03-30 |
Family
ID=55548337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410512460.2A Pending CN105437483A (en) | 2014-09-29 | 2014-09-29 | Leakage-free hydraulic self-locking loop for injection machine mold locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105437483A (en) |
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2014
- 2014-09-29 CN CN201410512460.2A patent/CN105437483A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |
|
| WD01 | Invention patent application deemed withdrawn after publication |