CN104476741B - 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
- CN104476741B CN104476741B CN201410754968.3A CN201410754968A CN104476741B CN 104476741 B CN104476741 B CN 104476741B CN 201410754968 A CN201410754968 A CN 201410754968A CN 104476741 B CN104476741 B CN 104476741B
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- oil
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- oil cylinder
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Fluid-Pressure Circuits (AREA)
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 is and in particular to one kind is used for controlling injection moulding machine mode-locking oil cylinder and mould shifting oil cylinder
The hydraulic circuit of synchronization action.
Background technology
Its Mode-locking oil cylinder oil-in of existing injection machine and mould shifting oil cylinder oil-in are to pass through a reversal valve respectively at present
Be connected with two oil pumps of a duplex pump, Mode-locking oil cylinder and mould shifting oil cylinder independently action it is impossible to realize synchronization action.
Content of the invention
For the deficiencies in the prior art, the present invention is intended to provide one kind enables to control Mode-locking oil cylinder synchronous with mould shifting oil cylinder
The injection moulding machine mode-locking oil cylinder of action and mould shifting oil cylinder Synchronization Control hydraulic circuit.
For achieving the above object, the present invention adopts the following technical scheme that：
Injection moulding machine mode-locking oil cylinder and mould shifting oil cylinder Synchronization Control hydraulic circuit, including 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 Mode-locking oil cylinder C its oil-in C1 and electro-hydraulic commutation
The first actuator port A of valve V6 connects, and its oil return opening C2 is connected with the second actuator port B of electro-hydraulic reversing valve V6, electro-hydraulic commutation
The oil inlet P of valve V6 connects hydraulic circuit oil inlet end；Described mould shifting oil cylinder D its oil-in D1 is through stacked unidirectional throttle valve
V20 is connected with the first actuator port A of solenoid directional control valve V8, and its oil return opening D2 is through stacked unidirectional throttle valve V20 and electromagnetism
The second actuator port B of reversal valve V8 connects, and the oil return inlet T of solenoid directional control valve V8 connects fuel tank, described solenoid directional control valve V8's
Oil inlet P is connected with the oil return inlet T of described electro-hydraulic reversing valve V6, the oil return inlet T of described electro-hydraulic reversing valve V6 and fuel tank pipeline it
Between be connected in parallel to a logic check valve V3, two working connection interfaces of this logic check valve V3 respectively with electro-hydraulic reversing valve V6
Oil return inlet T and fuel tank connect, the oil circuit control interface of logic check valve V3 connects the oil inlet P of reversal valve V2, reversal valve V2
The first actuator port A be connected with the oil-in of electric-hydraulic proportion pilot operated compound relief valve V5, electric-hydraulic proportion pilot operated compound relief valve V5's
Oil return opening is connected with fuel tank, and the second actuator port B of reversal valve V2 is connected with the oil-in of direct-acting overflow valve V4, and Direct Action Type is overflow
The oil return opening of stream valve V4 is connected with fuel tank, and the oil return inlet T of above-mentioned reversal valve V2 is connected with fuel tank.
The present invention has the advantages that：
The present invention enables Mode-locking oil cylinder and mould shifting oil cylinder synchronization action, solves its Mode-locking oil cylinder oil-feed of current injection machine
Mouthful and mould shifting oil cylinder oil-in be to be connected with two oil pumps of a duplex pump by a reversal valve respectively, Mode-locking oil cylinder and shifting
Mould oil cylinder independently action it is impossible to realize the problem of synchronization action.
Brief description
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.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the invention will be further described, understands this in order to clearer
The claimed technological thought of invention.
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, including 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 changed with electro-hydraulic
Connect to the first actuator port A of valve V6, its oil return opening C2 is connected with the second actuator port B of electro-hydraulic reversing valve V6, electro-hydraulic change
Connect hydraulic circuit oil inlet end, the oil-in of the oil return inlet T of electro-hydraulic reversing valve V6 and solenoid directional control valve V8 to the oil inlet P of valve V6
P connects, and the first actuator port A of solenoid directional control valve V8 is through the oil-in D1 of stacked unidirectional throttle valve V20 and mould shifting oil cylinder D
Connect, the second actuator port B of solenoid directional control valve V8 is through the oil return opening D2 of stacked unidirectional throttle valve V20 and mould shifting oil cylinder D
Connect, the oil return inlet T of solenoid directional control valve V8 is connected with fuel tank.Described logic check valve V3 is in parallel to be accessed electro-hydraulic reversing valve V6's
Between oil return inlet T and fuel tank pipeline, two working connection interfaces oil return with electro-hydraulic reversing valve V6 respectively of this logic check valve V3
Mouth T and fuel tank connect；The oil inlet P of reversal valve V2 is connected with the oil circuit control interface of above-mentioned logic check valve V3, reversal valve V2
The first actuator port A be connected with the oil-in of electric-hydraulic proportion pilot operated compound relief valve V5, electric-hydraulic proportion pilot operated compound relief valve V5's
Oil return opening is connected with fuel tank, and the second actuator port B of reversal valve V2 is connected with the oil-in of direct-acting overflow valve V4, and Direct Action Type is overflow
The oil return opening of stream valve V4 is connected with fuel tank, and the oil return inlet T of reversal valve V2 is connected with fuel tank.
The operation principle of the present invention is：During locked mode, on electro-hydraulic reversing valve V6, electric magnet YA6 end receives signal, electro-hydraulic commutation
The first actuator port A conducting of the oil inlet P of valve V6 and electro-hydraulic reversing valve V6, the second actuator port B of electro-hydraulic reversing valve V6 with
The oil return inlet T conducting of electro-hydraulic reversing valve V6, hydraulic energy transfer is mechanical energy, and Mode-locking oil cylinder C piston moves right, promote template to
Right motion；Meanwhile, electric-hydraulic proportion pilot operated compound relief valve V5 receives variable signal and adjusts the unlatching pressure of logic check valve V3
Power, thus control the oil return inlet T back pressure of electro-hydraulic reversing valve V6；Using this oil return inlet T back pressure, electromagnetism on solenoid directional control valve V8
Ferrum YA10 end receives signal, and the oil inlet P of solenoid directional control valve V8 is turned on the first actuator port A of solenoid directional control valve V8, electromagnetism
The oil return inlet T conducting of the second actuator port B and solenoid directional control valve V8 of reversal valve V8, adjusts stacked unidirectional throttle valve V20, moves
Mould 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, electric magnet YA5 end receives signal, the oil inlet P of electro-hydraulic reversing valve V6 with electro-hydraulic
The second actuator port B conducting of reversal valve V6, the oil return opening of the first actuator port A and electro-hydraulic reversing valve V6 of electro-hydraulic reversing valve V6
T turns on, and hydraulic energy transfer is mechanical energy, and Mode-locking oil cylinder C piston, to left movement, pulls template to left movement；Meanwhile, commutate
On valve V2, electric magnet YA3 end receives signal, the oil inlet P of reversal valve V2 and the second actuator port B conducting of reversal valve V2, commutates
The oil return inlet T conducting of the first actuator port A and reversal valve V2 of valve V2, then logic check valve is adjusted by direct-acting overflow valve V4
The Opening pressure of V3, completes to mold one section of action；Electric magnet YA3 after one section of action of die sinking to be done, on revocation reversal valve V2
End signal, simultaneously electric-hydraulic proportion pilot operated compound relief valve V5 receive variable signal, adjust the Opening pressure of logic check valve V3, and then
Control the oil return inlet T back pressure of electro-hydraulic reversing valve V6, using this back pressure, on solenoid directional control valve V8, electric magnet YA9 end receives letter
Number, the oil inlet P of solenoid directional control valve V8 is turned on the second actuator port B of solenoid directional control valve V8, and the first of solenoid directional control valve V8
The oil return inlet T conducting of actuator port A and solenoid directional control valve V8, adjusts stacked unidirectional throttle valve V20, mould shifting oil cylinder D piston to
Left movement, completes the synchronous athletic performance to the left of Mode-locking oil cylinder C and mould shifting oil cylinder D.
For a person skilled in the art, can technical scheme as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that all should belong to the claims in the present invention
Within enclosing.
Claims (1)
1. injection moulding machine mode-locking oil cylinder and mould shifting oil cylinder Synchronization Control hydraulic circuit, including 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 Mode-locking oil cylinder（C）Its oil-feed
Mouthful（C1）With electro-hydraulic reversing valve（V6）First actuator port connect, its oil return opening（C2）With electro-hydraulic reversing valve（V6）The second work
Make hydraulic fluid port to connect, electro-hydraulic reversing valve（V6）Oil-in connect hydraulic circuit oil inlet end；Described mould shifting oil cylinder（D）Its oil-in
（D1）Through stacked unidirectional throttle valve（V20）With solenoid directional control valve（V8）First actuator port connect, its oil return opening（D2）
Through stacked unidirectional throttle valve（V20）With solenoid directional control valve（V8）Second actuator port connect, solenoid directional control valve（V8）'s
Oil return opening connect fuel tank it is characterised in that：Described solenoid directional control valve（V8）Oil-in and described electro-hydraulic reversing valve（V6）Return
Hydraulic fluid port connects, described electro-hydraulic reversing valve（V6）Oil return opening and fuel tank pipeline between be connected in parallel to a logic check valve
（V3）, this logic check valve（V3）Two working connection interfaces respectively with electro-hydraulic reversing valve（V6）Oil return opening and fuel tank connect,
Logic check valve（V3）Oil circuit control interface connect reversal valve（V2）Oil-in, reversal valve（V2）The first actuator port with
Electric-hydraulic proportion pilot operated compound relief valve（V5）Oil-in connect, electric-hydraulic proportion pilot operated compound relief valve（V5）Oil return opening and fuel tank even
Connect, reversal valve（V2）The second actuator port and direct-acting overflow valve（V4）Oil-in connect, direct-acting overflow valve（V4）'s
Oil return opening is connected with fuel tank, above-mentioned reversal valve（V2）Oil return opening be 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104476741A CN104476741A (en) | 2015-04-01 |
| CN104476741B true CN104476741B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4209392C2 (en) * | 1992-03-23 | 1995-10-12 | Krauss Maffei Ag | Mold closing device for an injection molding 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 |
| CN101927539B (en) * | 2009-06-26 | 2014-05-14 | 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 |
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| CN104476741A (en) | 2015-04-01 |
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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. |
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