CN104476741A - Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine - Google Patents
Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine Download PDFInfo
- Publication number
- CN104476741A CN104476741A CN201410754968.3A CN201410754968A CN104476741A CN 104476741 A CN104476741 A CN 104476741A CN 201410754968 A CN201410754968 A CN 201410754968A CN 104476741 A CN104476741 A CN 104476741A
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- Prior art keywords
- oil
- valve
- oil cylinder
- hydraulic
- electro
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
Abstract
The invention discloses an oil hydraulic circuit for synchronously controlling a mould locking oil cylinder and a mould transferring oil cylinder of an injection molding machine. The oil hydraulic circuit comprises the mould locking oil cylinder C, an electro-hydraulic directional control valve V6, the mould transferring oil cylinder D, a stacked unidirectional throttle valve V20, an electromagnetic directional valve V8, a logic one-way valve V3, a reversing valve V2, a direct-acting overflow valve V4 and a pilot type electric-hydraulic proportional overflow valve V5, wherein the oil inlet P of the electro-hydraulic directional control valve V6 is connected with the oil inlet end of a hydraulic oil path, an oil return opening T of the electro-hydraulic directional control valve V6 is connected with the oil inlet P of the electromagnetic directional valve V8, the oil return opening T of the electromagnetic directional valve V8 is connected with an oil tank, two main oil path interfaces of the logic one-way valve V3 are respectively connected with the oil return opening T of the electro-hydraulic directional control valve V6 and the oil tank, the control oil path interface of the logic one-way valve V3 is connected with the reversing valve V2, and the oil return opening T of the reversing valve V2 is connected with the oil tank; and the oil inlets of the direct-acting overflow valve V4 and the pilot type electric-hydraulic proportional overflow valve V5 are connected with a working oil opening of the reversing valve V2, and the oil outlets thereof are connected with the oil tank. The oil hydraulic circuit disclosed by the invention can be used for achieving synchronization action of the mould locking oil cylinder and the mould transferring oil cylinder.
Description
Technical field
The present invention relates to injection machine technical field, being specifically related to a kind of hydraulic circuit for controlling injection moulding machine mode-locking oil cylinder and mould shifting oil cylinder synchronization action.
Background technology
Its Mode-locking oil cylinder oil-in of current existing injection machine and mould shifting oil cylinder oil-in are connected with two oil pumps of a duplex pump respectively by a reversal valve, and the independently action of Mode-locking oil cylinder and mould shifting oil cylinder, cannot realize synchronization action.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind of injection moulding machine mode-locking oil cylinder and the mould shifting oil cylinder Synchronization Control hydraulic circuit that can realize controlling Mode-locking oil cylinder and mould shifting oil cylinder synchronization action.
For achieving the above object, the present invention adopts following technical scheme:
Injection moulding machine mode-locking oil cylinder and mould shifting oil cylinder Synchronization Control hydraulic circuit, comprise Mode-locking oil cylinder C, electro-hydraulic reversing valve V6, mould shifting oil cylinder D, stacked unidirectional throttle valve V20 and solenoid directional control valve V8, described its oil-in of Mode-locking oil cylinder C C1 is connected with the first actuator port A of electro-hydraulic reversing valve V6, its oil return opening C2 is connected with the second actuator port B of electro-hydraulic reversing valve V6, and the oil inlet P of electro-hydraulic reversing valve V6 connects hydraulic circuit oil inlet end, described its oil-in of mould shifting oil cylinder D D1 is connected with the first actuator port A of solenoid directional control valve V8 through stacked unidirectional throttle valve V20, its oil return opening D2 is connected with the second actuator port B of solenoid directional control valve V8 through stacked unidirectional throttle valve V20, the oil return inlet T of solenoid directional control valve V8 connects fuel tank, the oil inlet P of described solenoid directional control valve V8 is connected with the oil return inlet T of described electro-hydraulic reversing valve V6, a logic check valve V3 is connected in parallel between the oil return inlet T of described electro-hydraulic reversing valve V6 and fuel tank pipeline, two working connection interfaces of this logic check valve V3 are connected with the oil return inlet T of electro-hydraulic reversing valve V6 and fuel tank respectively, the oil circuit control interface of logic check valve V3 connects the oil inlet P of reversal valve V2, the first actuator port A of reversal valve V2 is connected with the oil-in of electric-hydraulic proportion pilot operated compound relief valve V5, the oil return opening of electric-hydraulic proportion pilot operated compound relief valve V5 is connected with fuel tank, the second actuator port B of reversal valve V2 is connected with the oil-in of direct-acting overflow valve V4, the oil return opening of direct-acting overflow valve V4 is connected with fuel tank, the oil return inlet T of above-mentioned reversal valve V2 is connected with fuel tank.
The present invention has following beneficial effect:
The present invention can realize Mode-locking oil cylinder and mould shifting oil cylinder synchronization action, solving its Mode-locking oil cylinder oil-in of current injection machine with mould shifting oil cylinder oil-in is be connected with two oil pumps of a duplex pump respectively by a reversal valve, the independently action of Mode-locking oil cylinder and mould shifting oil cylinder, cannot realize the problem of synchronization action.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of injection moulding machine mode-locking oil cylinder of the present invention and mould shifting oil cylinder Synchronization Control hydraulic circuit.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the invention will be further described, understands the technological thought of application claims protection so that clearer.
Injection moulding machine mode-locking oil cylinder of the present invention and mould shifting oil cylinder Synchronization Control hydraulic circuit as shown in Figure 1, comprise Mode-locking oil cylinder C, electro-hydraulic reversing valve V6, mould shifting oil cylinder D, stacked unidirectional throttle valve V20, solenoid directional control valve V8, logic check valve V3, reversal valve V2, direct-acting overflow valve V4 and electric-hydraulic proportion pilot operated compound relief valve V5, the oil-in C1 of wherein said Mode-locking oil cylinder C is connected with the first actuator port A of electro-hydraulic reversing valve V6, its oil return opening C2 is connected with the second actuator port B of electro-hydraulic reversing valve V6, the oil inlet P of electro-hydraulic reversing valve V6 connects hydraulic circuit oil inlet end, the oil return inlet T of electro-hydraulic reversing valve V6 is connected with the oil inlet P of solenoid directional control valve V8, the first actuator port A of solenoid directional control valve V8 is connected with the oil-in D1 of mould shifting oil cylinder D through stacked unidirectional throttle valve V20, the second actuator port B of solenoid directional control valve V8 is connected with the oil return opening D2 of mould shifting oil cylinder D through stacked unidirectional throttle valve V20, the oil return inlet T of solenoid directional control valve V8 is connected with fuel tank.Described logic check valve V3 parallel connection access is between the oil return inlet T and fuel tank pipeline of electro-hydraulic reversing valve V6, and two working connection interfaces of this logic check valve V3 are connected with the oil return inlet T of electro-hydraulic reversing valve V6 and fuel tank respectively; The oil inlet P of reversal valve V2 is connected with the oil circuit control interface of above-mentioned logic check valve V3, the first actuator port A of reversal valve V2 is connected with the oil-in of electric-hydraulic proportion pilot operated compound relief valve V5, the oil return opening of electric-hydraulic proportion pilot operated compound relief valve V5 is connected with fuel tank, the second actuator port B of reversal valve V2 is connected with the oil-in of direct-acting overflow valve V4, the oil return opening of direct-acting overflow valve V4 is connected with fuel tank, and the oil return inlet T of reversal valve V2 is connected with fuel tank.
Operation principle of the present invention is: during locked mode, on electro-hydraulic reversing valve V6, electromagnet YA6 end receives signal, the oil inlet P of electro-hydraulic reversing valve V6 and the first actuator port A conducting of electro-hydraulic reversing valve V6, the second actuator port B of electro-hydraulic reversing valve V6 and the oil return inlet T conducting of electro-hydraulic reversing valve V6, hydraulic energy transfer is mechanical energy, Mode-locking oil cylinder C piston moves right, and promotes template and moves right; Meanwhile, electric-hydraulic proportion pilot operated compound relief valve V5 receives variable signal and regulates the opening pressure of logic check valve V3, thus controls the oil return inlet T back pressure of electro-hydraulic reversing valve V6; Utilize this oil return inlet T back pressure, on solenoid directional control valve V8, electromagnet YA10 end receives signal, the oil inlet P of solenoid directional control valve V8 and the first actuator port A conducting of solenoid directional control valve V8, the second actuator port B of solenoid directional control valve V8 and the oil return inlet T conducting of solenoid directional control valve V8, regulate stacked unidirectional throttle valve V20, mould shifting oil cylinder D piston moves right, and completes Mode-locking oil cylinder C and mould shifting oil cylinder D and synchronously moves right action.
During die sinking, on electro-hydraulic reversing valve V6, electromagnet YA5 end receives signal, the oil inlet P of electro-hydraulic reversing valve V6 and the second actuator port B conducting of electro-hydraulic reversing valve V6, the first actuator port A of electro-hydraulic reversing valve V6 and the oil return inlet T conducting of electro-hydraulic reversing valve V6, hydraulic energy transfer is mechanical energy, Mode-locking oil cylinder C piston, to left movement, pulls template to left movement, meanwhile, on reversal valve V2, electromagnet YA3 end receives signal, the oil inlet P of reversal valve V2 and the second actuator port B conducting of reversal valve V2, the first actuator port A of reversal valve V2 and the oil return inlet T conducting of reversal valve V2, regulated the opening pressure of logic check valve V3 again by direct-acting overflow valve V4, complete die sinking one section of action, after die sinking to be done one section of action, cancel the electromagnet YA3 end signal on reversal valve V2, electric-hydraulic proportion pilot operated compound relief valve V5 receives variable signal simultaneously, regulate the opening pressure of logic check valve V3, and then control the oil return inlet T back pressure of electro-hydraulic reversing valve V6, utilize this back pressure, on solenoid directional control valve V8, electromagnet YA9 end receives signal, the oil inlet P of solenoid directional control valve V8 and the second actuator port B conducting of solenoid directional control valve V8, the first actuator port A of solenoid directional control valve V8 and the oil return inlet T conducting of solenoid directional control valve V8, regulate stacked unidirectional throttle valve V20, mould shifting oil cylinder D piston is to left movement, complete Mode-locking oil cylinder C left athletic performance synchronous with mould shifting oil cylinder D.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the claims in the present invention.
Claims (1)
1. injection moulding machine mode-locking oil cylinder and mould shifting oil cylinder Synchronization Control hydraulic circuit, comprise Mode-locking oil cylinder C, electro-hydraulic reversing valve V6, mould shifting oil cylinder D, stacked unidirectional throttle valve V20 and solenoid directional control valve V8, described its oil-in of Mode-locking oil cylinder C C1 is connected with the first actuator port A of electro-hydraulic reversing valve V6, its oil return opening C2 is connected with the second actuator port B of electro-hydraulic reversing valve V6, and the oil inlet P of electro-hydraulic reversing valve V6 connects hydraulic circuit oil inlet end, described its oil-in of mould shifting oil cylinder D D1 is connected with the first actuator port A of solenoid directional control valve V8 through stacked unidirectional throttle valve V20, its oil return opening D2 is connected with the second actuator port B of solenoid directional control valve V8 through stacked unidirectional throttle valve V20, the oil return inlet T of solenoid directional control valve V8 connects fuel tank, it is characterized in that: the oil inlet P of described solenoid directional control valve V8 is connected with the oil return inlet T of described electro-hydraulic reversing valve V6, a logic check valve V3 is connected in parallel between the oil return inlet T of described electro-hydraulic reversing valve V6 and fuel tank pipeline, two working connection interfaces of this logic check valve V3 are connected with the oil return inlet T of electro-hydraulic reversing valve V6 and fuel tank respectively, the oil circuit control interface of logic check valve V3 connects the oil inlet P of reversal valve V2, the first actuator port A of reversal valve V2 is connected with the oil-in of electric-hydraulic proportion pilot operated compound relief valve V5, the oil return opening of electric-hydraulic proportion pilot operated compound relief valve V5 is connected with fuel tank, the second actuator port B of reversal valve V2 is connected with the oil-in of direct-acting overflow valve V4, the oil return opening of direct-acting overflow valve V4 is connected with fuel tank, the oil return inlet T of above-mentioned reversal valve V2 is connected with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754968.3A CN104476741B (en) | 2014-12-11 | 2014-12-11 | Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410754968.3A CN104476741B (en) | 2014-12-11 | 2014-12-11 | Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine |
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| Publication Number | Publication Date |
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| CN104476741A true CN104476741A (en) | 2015-04-01 |
| CN104476741B CN104476741B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410754968.3A Active CN104476741B (en) | 2014-12-11 | 2014-12-11 | Oil hydraulic circuit for synchronously controlling mould locking oil cylinder and mould transferring oil cylinder of injection molding machine |
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| CN (1) | CN104476741B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366648A (en) * | 2017-09-11 | 2017-11-21 | 徐工集团工程机械股份有限公司 | A kind of hydraulic control system of paver screed |
| CN109779988A (en) * | 2019-01-25 | 2019-05-21 | 张家港市意久机械有限公司 | Novel hydraulic system |
| CN110499798A (en) * | 2019-07-29 | 2019-11-26 | 青岛雷沃工程机械有限公司 | A kind of explosion-proof valve, hydraulic control system, hydraulic control method and excavator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0562181A1 (en) * | 1992-03-23 | 1993-09-29 | Krauss-Maffei Aktiengesellschaft | Clamping device for an injection moulding machine |
| WO1995032856A1 (en) * | 1994-06-01 | 1995-12-07 | Sodick Co., Ltd. | Straight hydraulic mold clamping system |
| CN2623439Y (en) * | 2003-02-26 | 2004-07-07 | 上海银杏实业有限公司 | Mode locking mechanism of four-jar two-board differential fast moving mode full hydraulic pressure plastic jetting machine |
| CN101927539A (en) * | 2009-06-26 | 2010-12-29 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN202357398U (en) * | 2011-11-28 | 2012-08-01 | 浙江大学 | Double-valve parallel mould adjusting and mould locking system of two-plate injection molding machine |
-
2014
- 2014-12-11 CN CN201410754968.3A patent/CN104476741B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0562181A1 (en) * | 1992-03-23 | 1993-09-29 | Krauss-Maffei Aktiengesellschaft | Clamping device for an injection moulding machine |
| WO1995032856A1 (en) * | 1994-06-01 | 1995-12-07 | Sodick Co., Ltd. | Straight hydraulic mold clamping system |
| CN2623439Y (en) * | 2003-02-26 | 2004-07-07 | 上海银杏实业有限公司 | Mode locking mechanism of four-jar two-board differential fast moving mode full hydraulic pressure plastic jetting machine |
| CN101927539A (en) * | 2009-06-26 | 2010-12-29 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN202357398U (en) * | 2011-11-28 | 2012-08-01 | 浙江大学 | Double-valve parallel mould adjusting and mould locking system of two-plate injection molding machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366648A (en) * | 2017-09-11 | 2017-11-21 | 徐工集团工程机械股份有限公司 | A kind of hydraulic control system of paver screed |
| CN107366648B (en) * | 2017-09-11 | 2023-08-29 | 徐工集团工程机械股份有限公司 | Hydraulic control system of paver screed |
| CN109779988A (en) * | 2019-01-25 | 2019-05-21 | 张家港市意久机械有限公司 | Novel hydraulic system |
| CN110499798A (en) * | 2019-07-29 | 2019-11-26 | 青岛雷沃工程机械有限公司 | A kind of explosion-proof valve, hydraulic control system, hydraulic control method and excavator |
| CN110499798B (en) * | 2019-07-29 | 2021-12-28 | 雷沃工程机械集团有限公司 | Explosion-proof valve, hydraulic control system, hydraulic control method and excavator |
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| Publication number | Publication date |
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| CN104476741B (en) | 2017-02-22 |
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Address after: 528100 office building, complex building, workshop I and Workshop II, No.5, West innovation Avenue, Leping Town, Sanshui District, Foshan City, Guangdong Province Patentee after: Foshan Baojie Precision Machinery Co.,Ltd. Address before: Fraternity in Nanhai District of Shishan Industrial Park B District 528225 Road, Guangdong city of Foshan province No. 12 Foshan Baojie Pml Precision Mechanism Ltd Patentee before: Foshan Baojie Precision Machinery Co.,Ltd. |