CN201579968U - Pre-plasticizing mould-clearing hydraulic loop of injection machine - Google Patents
Pre-plasticizing mould-clearing hydraulic loop of injection machine Download PDFInfo
- Publication number
- CN201579968U CN201579968U CN200920294967XU CN200920294967U CN201579968U CN 201579968 U CN201579968 U CN 201579968U CN 200920294967X U CN200920294967X U CN 200920294967XU CN 200920294967 U CN200920294967 U CN 200920294967U CN 201579968 U CN201579968 U CN 201579968U
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- oil
- valve
- clearing
- plasticizing
- pump
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Abstract
The utility model discloses a hydraulic loop, which simultaneously controls the pre-plasticizing and module-clearing of an injection machine, in particular to a pre-plasticizing mould-clearing hydraulic loop of the injection machine, which comprises a duplex pump driven by an oil pump motor, an electromagnetic change-over valve, a proportion flow pressure valve, an overflow valve, a plugging valve, a module-clearing cylinder, an injection cylinder and a pre-plasticizing oil motor. The pre-plasticizing mould-clearing hydraulic loop is characterized in that a first oil pump in the duplex pump is connected with the proportion flow pressure valve - through the change-over valve and is connected with an oil inlet of the module-clearing cylinder through an electro-hydraulic change-over valve, an oil return hole of the module-clearing cylinder is connected with an oil tank through the change-over valve and the plugging valve, the second oil pump of the duplex pump is connected to an oil inlet of a pre-plasticizing motor through the proportion flow pressure valve and the electro-hydraulic change-over valve, and an oil return hole of the pre-plasticizing motor is further connected to the oil tank through an oil cooler. The pre-plasticizing mould-clearing hydraulic loop can achieve the simultaneous action of pre-plasticizing and mould-clearing, and greatly shortens the overall work time.
Description
Technical field
The utility model relates to a kind of hydraulic circuit of injection machine, particularly a kind of hydraulic circuit of controlling The injection moulding machine preforms and die sinking simultaneously.
Background technology
Present existing injection machine mainly contains three kinds of methods when realizing preformed, die sinking action: hydraulic-driven injection machine, complete machine have only a cover hydraulic system, successively control preformed, die sinking action with two reversal valves, are difficult to realize that preformed and die sinking are moved carries out synchronously.
Electricity liquid combination drive injection machine, complete machine also has only a cover hydraulic system, and the preformed action through synchronous cog belt (also can use reduction box) deceleration rear drive, is controlled die sinking with an electro-hydraulic reversing valve with servomotor, realization preformed and die sinking are moved simultaneously, but servomotor and servo controller cost height.
All-electric injection moulding machine, be that preformed uses servomotor through synchronous cog belt (also can use reduction box) deceleration rear drive, die sinking is also controlled through the ball screw transmission with servomotor, realization preformed and die sinking are moved simultaneously, but ball screw is paid easy to wear, cause the complete machine precise decreasing, and cost is very high.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art and a kind of injector preformed, the die sinking hydraulic circuit that can realize that preformed and die sinking are moved simultaneously is provided.
The technical scheme in the invention for solving the above technical problem is: this injector preformed, the die sinking hydraulic circuit, comprise the duplex pump that drives by Oil pump electrical machinery, solenoid directional control valve, ratio flow pressure valve, overflow valve, inserted valve, the die sinking oil cylinder, injection cylinder, pre-plastic oil motor, be characterized in: first oil pump in the duplex pump connects ratio flow pressure valve behind reversal valve, then through the oil-in of electro-hydraulic reversing valve to the die sinking oil cylinder, the oil return opening of die sinking oil cylinder is through reversal valve, connected tank behind the inserted valve, second oil pump of duplex pump is through ratio flow pressure valve, electro-hydraulic reversing valve is connected to the oil-in of preformed motor, the oil return opening of preformed motor is connected to fuel tank through oil cooler.
The utility model advantage is to realize The injection moulding machine preforms and the compound action simultaneously of die sinking, and it is the longest that the The injection moulding machine preforms time accounts for the complete machine cycle, carries out the die sinking action simultaneously at preformed, shortens the complete machine working time greatly.
Description of drawings
Fig. 1 is the utility model hydraulic circuit diagram.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, a kind of The injection moulding machine preforms, die sinking hydraulic circuit, comprise the duplex pump P1-P2 that drives by Oil pump electrical machinery M, die sinking oil cylinder C, injection cylinder B and pre-plastic oil motor A, the first oil pump P1 of duplex pump connects ratio flow pressure valve VPQ1 behind solenoid directional control valve V72, through the oil-in C1 of solenoid directional control valve V1 to die sinking oil cylinder C, the oil return opening C2 of die sinking oil cylinder C is connected tank behind solenoid directional control valve V1, inserted valve V8, has connected inserted valve V8 on the oil return line of die sinking oil cylinder C then.The second oil pump P2 of duplex pump is connected to the oil-in A1 of pre-plastic oil motor A, the oil return opening A2 of oil motor A oil sump tank behind oil cooler V27 through ratio flow pressure valve VPQ2, electro-hydraulic reversing valve V6; And in first oil pump P1 outlet and connected a safety overflow valve V73, the oil return opening of electro-hydraulic reversing valve V6 has connected overflow valve V23.
Operation principle of the present utility model is as follows:
When preformed, Oil pump electrical machinery M rotates, drive duplex pump P1-P2, the hydraulic fluid port of duplex pump P2 is connected to the oil-in A1 of pre-plastic oil motor A through ratio flow pressure valve VPQ2, electro-hydraulic reversing valve V6, the oil return opening A2 of oil motor A oil sump tank behind oil cooler V27, realized the preformed action, the hydraulic fluid port of duplex pump P1 connects ratio flow pressure valve VPQ1 behind reversal valve V72 simultaneously, then through the oil-in C1 of reversal valve V1 to die sinking oil cylinder C, the oil return opening C2 of die sinking oil cylinder C is connected tank behind solenoid directional control valve V1, inserted valve V8, has realized the composite move of preformed and die sinking.Overflow valve V73 is as the safety valve of oil pump P1; inserted valve V8 realizes the die sinking buffering; solenoid directional control valve V5 is used to control injection cylinder; overflow valve V23 is used to control the preformed back pressure; solenoid directional control valve V72 electromagnetism lacks getting of S29; oil pump P1 and P2 join through ratio flow pressure valve VPQ2, the electro-hydraulic reversing valve V5 oil-in B1 to injection cylinder B, and the oil return opening B2 of injection cylinder B has realized action of injection through reversal valve V5 oil sump tank behind oil cooler V27.
Claims (1)
1. injector preformed, the die sinking hydraulic circuit, comprise the duplex pump that drives by Oil pump electrical machinery, solenoid directional control valve, ratio flow pressure valve, overflow valve, inserted valve, the die sinking oil cylinder, injection cylinder, pre-plastic oil motor, it is characterized in that: first oil pump in the duplex pump connects ratio flow pressure valve behind reversal valve, then through the oil-in of electro-hydraulic reversing valve to the die sinking oil cylinder, the oil return opening of die sinking oil cylinder is through reversal valve, connected tank behind the inserted valve, second oil pump of duplex pump is through ratio flow pressure valve, electro-hydraulic reversing valve is connected to the oil-in of preformed motor, the oil return opening of preformed motor is connected to fuel tank through oil cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920294967XU CN201579968U (en) | 2009-12-24 | 2009-12-24 | Pre-plasticizing mould-clearing hydraulic loop of injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920294967XU CN201579968U (en) | 2009-12-24 | 2009-12-24 | Pre-plasticizing mould-clearing hydraulic loop of injection machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201579968U true CN201579968U (en) | 2010-09-15 |
Family
ID=42721961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920294967XU Expired - Lifetime CN201579968U (en) | 2009-12-24 | 2009-12-24 | Pre-plasticizing mould-clearing hydraulic loop of injection machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201579968U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727093A (en) * | 2013-12-31 | 2014-04-16 | 宁波腾隆户外用品有限公司 | Integrated hydraulic drive system |
| CN107263835A (en) * | 2017-07-13 | 2017-10-20 | 江苏联宇医疗器械有限公司 | A kind of pharmaceutical injection machine |
| CN112936739A (en) * | 2021-01-26 | 2021-06-11 | 宁波瑞玛节能科技有限公司 | Injection molding machine |
-
2009
- 2009-12-24 CN CN200920294967XU patent/CN201579968U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727093A (en) * | 2013-12-31 | 2014-04-16 | 宁波腾隆户外用品有限公司 | Integrated hydraulic drive system |
| CN107263835A (en) * | 2017-07-13 | 2017-10-20 | 江苏联宇医疗器械有限公司 | A kind of pharmaceutical injection machine |
| CN112936739A (en) * | 2021-01-26 | 2021-06-11 | 宁波瑞玛节能科技有限公司 | Injection molding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100915 Effective date of abandoning: 20121127 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |