CN200963900Y - Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine - Google Patents
Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine Download PDFInfo
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- CN200963900Y CN200963900Y CN 200620067140 CN200620067140U CN200963900Y CN 200963900 Y CN200963900 Y CN 200963900Y CN 200620067140 CN200620067140 CN 200620067140 CN 200620067140 U CN200620067140 U CN 200620067140U CN 200963900 Y CN200963900 Y CN 200963900Y
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Abstract
The utility model provides a hydraulic circuit for the synchronous actions of the mould opening, the preplastizing, the lifting-out of the injection machine. The main structure is as follow( referring to the illustration ): an oil pump (P3), an oil motor (M1) and the corresponding control valve form a preplastizing circuit of the system; the oil outlet of an auxiliary pump for a duplex pump (P2) is firstly connected with a check valve (G1) and then is connected with an energy calculator (A1) , all of which form a liquid storage circuit of the system; the oil outlet of the auxiliary pump of the duplex pump (P2) is in parallel connection with a relief circuit , which is formed by an overflow valve (B3) and a solenoid directional control valve (D3); the oil outlet of the overflow valve (B3) is firstly connected with a cooler (F1) and then is connected with an oil tank; the oil mouth of the energy accumulator (A1) is connected with a pressure relay (R1). Compared with the prior art, the utility model has advantages that the synchronous actions of the mould opening, the preplastizing, and the lifting-out can be realized, which can shorten the working time of the whole machine greatly, favorable to the stability of the system oil temperature and thus prolongs the service life of the elements, such as the oil seal and the oil pipe of the whole machine.
Description
Technical field:
The utility model relates to a kind ofly can control injection moulding machine mould open, preformed, eject the hydraulic circuit that three actions are carried out simultaneously.
Background technology:
From the injection machine birth, how under the prerequisite that guarantees the machine reliable operation, to shorten its work period as far as possible, just be the problem that each injection machine manufacturer all need consider always.Simultaneously, along with the continuous development of science and technology, the fierceness day by day of market competition, this demand becomes more and more important.Even to this day, whether an injection moulding function is accepted by market, to a certain extent even be decided by the length of its work period.
Yet, general single system injection machine, because its design feature, have to straight arrowly move its complete machine work period so just be subjected to certain limitation in the course of work according to " locked mode-move platform-injection-pressurize-cooling (preformed)-die sinking-eject-locked mode " this working cycles.
In order to overcome above-mentioned deficiency, some injection machines that top some step is carried out have simultaneously just appearred on the market, and its principal mode is die sinking and preformed, die sinking and the synchronization action that ejects.
Realizing that die sinking ejects aspect the synchronization action, present most of injection machine has developed comparatively ripely, and aspect die sinking preformed synchronization action, though have electric-hydraulic combined driving injection machine and complete electric driving injection moulding function to accomplish, these two kinds of methods exist following shortcoming:
Electricity liquid combination drive injection machine, complete machine has only a cover hydraulic system, with variable-frequency motor through gear reduction box deceleration rear drive screw rod preformed, hydraulic system then is responsible for other actions of machine, but this system has relatively high expectations to oil cleanliness, and preformed need be realized through variable-frequency motor and speed-changing gear box, so cost is higher.
Complete electric driving injection machine, be with deceleration rear drive screw rod preformed through synchronously with servomotor, with servomotor through synchronous band slow down after ball-screw transmission control injection, penetrate move back, back pressure, realize preformed and open and close the compound action simultaneously of mould, but there is the shortcoming that ball-screw is easy to wear, cause accuracy of machines to descend, and cost is higher, is difficult to realize high speed injection.
Summary of the invention:
Technical problem to be solved in the utility model is to overcome present realization injection moulding machine mould open, preformed, eject the compound above-mentioned shortcoming that exists when moving simultaneously, and a kind of injection moulding machine mould open, the preformed that provide, the hydraulic circuit that ejects synchronization action.
The technical scheme that the utility model adopts addressing the above problem is (referring to implementing illustration): oil pump (P3), the preformed loop of oil motor (M1) and control corresponding valve construction system, oil pump (P3) inlet port connects fuel tank, oil-out connects solenoid directional control valve (D4) back and is connected with oil motor (M1) oil-in, oil motor (M1) oil-out connects reversal valve (D4) back and is connected with counterbalance valve (B1) oil-in, counterbalance valve (B1) oil-out is connected with fuel tank, while oil pump (P1) oil-out and overflow valve (B2), the relief circuit parallel connection that solenoid directional control valve (D2) is formed, overflow valve (B2) oil-out connect cooler (F1) back and are connected with fuel tank; What duplex pump assisted that pump (P2) oil-out is connected with check valve (G1) that back and accumulator (A1) connect and compose system holds the liquid loop, duplex pump is assisted pump (P2) oil-out and overflow valve (B3), the relief circuit parallel connection that solenoid directional control valve (D3) is formed, overflow valve (B3) oil-out connects cooler (F1) back and is connected with fuel tank, accumulator (A1) hydraulic fluid port connects pressure switch (R1), the accumulator hydraulic fluid port also links to each other with following three loops: a: be connected the back with flow speed control valve (T1) and be connected with one of them oil-in of solenoid directional control valve (D1), solenoid directional control valve (D1) another one oil-in is connected with proportional velocity regulating valve (E2) oil-out, solenoid directional control valve (D1) oil-out is connected with solenoid directional control valve (D6) pressure hydraulic fluid port, two work of solenoid directional control valve (D6) oil-out is connected with two working chambers of thimble oil cylinder (C2) respectively, and oil return opening then is connected the back and is connected with fuel tank with cooler (F1); B: be connected the back with flow speed control valve (T2) and be connected with solenoid directional control valve (D5) pressure hydraulic fluid port, two work of solenoid directional control valve (D5) oil-out is connected with two working chambers of hydraulic selector nozzle (C1) respectively, and its oil return opening then is connected with fuel tank; C: with by inserted valve (V1), (V2) and after the quick injection loop connection of corresponding control valve composition be connected with injection oil cylinder (C3) rod chamber, duplex pump main pump (P1) oil-out is through proportional pressure control valve (E1), and proportional velocity regulating valve (E2) links to each other with other work loops of machine.
Described oil pump (P1), oil pump (P2), oil pump (P3) is constant displacement pump, and oil pump (P1) is the duplex pump combination with oil pump (P2).
Described solenoid directional control valve (D1) is a two-position four-way formula solenoid directional control valve.
The utility model is with the preformed of independent Constant Pump System control machine, and the operating pressure of constant displacement pump is set up by overflow valve, and controls its work and off-load by solenoid directional control valve.Use accumulator, with another independent constant displacement pump accumulator is carried out topping up, supercharging pressure is set up by overflow valve, and with the oil liquid pressure of pressure switch induction accumulator, with the control solenoid directional control valve to realize the topping up/off-load of pump.The function that accumulator can be realized comprises: ejects, the switch of hydraulic pressure nozzle, and injection fast.Since the pressure stability that accumulator provides, and a large amount of fluid can be provided at short notice, so can well be competent at above-mentioned functions.Use the hydraulic pressure nozzle, this nozzle can be sealed discharging opening in die sinking, so die sinking, preformed two actions can be carried out smoothly.As for other actions of machine, then by discharge capacity suitable constant displacement pump and proportional velocity regulating valve, the system that proportional pressure control valve is formed finishes.
Compared with prior art, advantage of the present utility model is can realize injection moulding machine mould open, preformed, eject synchronization action, shortens the complete machine working time greatly.Element that whole system adopts and structure are all comparatively ripe technically, so the stability of system works and reliability are all guaranteed.In addition, oil return can be by oil sump tank again behind the cooler during not off-load of oil pump P3, and in fact being equivalent to provides an independent cooling circuit, helps the stable of system oil temperature like this, thereby prolongs the entire machine oil sealing, element such as oil pipe service life.
Description of drawings:
Fig. 1 is a hydraulic schematic diagram of the present utility model.
Label among the figure is:
P1, P2, P3-constant displacement pump; The A1-accumulator; B1, B2, B3-overflow valve; C1-hydraulic selector nozzle, C2-thimble oil cylinder, C3-injection oil cylinder; D1, D2, D3, D4, D5, D6-solenoid directional control valve: E1, E2-proportional pressure control valve; The F1-cooler; The G1-check valve; The M1-oil motor; R1: pressure switch; V1, V2-direction control inserted valve.
The specific embodiment:
Referring to Fig. 1, the preformed loop of present embodiment oil pump P3, oil motor M1 and control corresponding valve construction system, oil pump P3 inlet port connects fuel tank, oil-out is connected with oil motor M1 oil-in after connecting solenoid directional control valve D4, oil motor M1 oil-out is connected with counterbalance valve B1 oil-in after connecting reversal valve D4, counterbalance valve B1 oil-out is connected with fuel tank, oil pump P1 oil-out is in parallel with the relief circuit that overflow valve B2, solenoid directional control valve D2 form simultaneously, and overflow valve B2 oil-out connects cooler (F1) back and is connected with fuel tank; What the auxilliary pump P2 oil-out of duplex pump was connected with check valve G1 afterwards and accumulator A1 connects and composes system holds the liquid loop, auxilliary pump P2 oil-out of duplex pump and overflow valve B3, the relief circuit parallel connection that solenoid directional control valve D3 forms, overflow valve B3 oil-out is connected with fuel tank after connecting cooler F1, accumulator A1 hydraulic fluid port connects pressure switch R1, the accumulator hydraulic fluid port also links to each other with following three loops: a: be connected the back with flow speed control valve T1 and be connected with one of them oil-in of solenoid directional control valve D1, solenoid directional control valve D1 another one oil-in is connected with proportional velocity regulating valve E2 oil-out, solenoid directional control valve D1 oil-out is connected with solenoid directional control valve D6 pressure hydraulic fluid port, two work of solenoid directional control valve D6 oil-out is connected with two working chambers of thimble oil cylinder C2 respectively, and oil return opening then is connected the back and is connected with fuel tank with cooler F1; B: be connected the back with flow speed control valve T2 and be connected with solenoid directional control valve D5 pressure hydraulic fluid port, two work of solenoid directional control valve D5 oil-out is connected with two working chambers of hydraulic selector nozzle C1 respectively, and its oil return opening then is connected with fuel tank; C: with by inserted valve V1, the quick injection loop that V2 and corresponding control valve are formed connects the back and is connected with injection oil cylinder C3 rod chamber, duplex pump main pump P1 oil-out is through proportional pressure control valve E1, proportional velocity regulating valve E2 links to each other with other work loops of machine.Described oil pump P1, oil pump P2, oil pump P3 is constant displacement pump, and oil pump P1 and oil pump P2 are the duplex pump combination.Described solenoid directional control valve D1 is a two-position four-way formula solenoid directional control valve.
Because this system unblanks mould, mode transfer, actions such as injection there is no too big difference with general quick injection molding machine fast, so only to system's die sinking, preformed, eject synchronization action and be described.
As shown in Figure 1, system carries out die sinking, preformed, when ejecting synchronization action, and solenoid directional control valve D5 switches right position, and after hydraulic pressure nozzle piston rod promoted thimble and bars up the nozzle discharging opening, solenoid directional control valve D5 switched back meta.The right position of solenoid directional control valve D2 is inserted simultaneously, oil pump B3 transfers duty to from off-load, solenoid directional control valve D4 also inserts right position simultaneously, oil motor M1 starts, and overflow valve B1 forms back pressure, carries out the preformed action, after preformed finishes, solenoid directional control valve D5 switches position, a left side, and hydraulic pressure nozzle discharging opening is opened, and reversal valve D5 returns meta; The fluid of oil pump P1 output enters the rod chamber of the mould oil cylinder of unblanking by relevant control valve, carries out the die sinking action; Solenoid directional control valve D1 switches upper, and accumulator provides liftout tank C2 work required pressure oil, ejects action.
Claims (3)
1. injection moulding machine mould open, preformed, eject the synchronization action loop, it is characterized in that: oil pump (P3), the preformed loop of oil motor (M1) and control corresponding valve construction system, oil pump (P3) inlet port connects fuel tank, oil-out connects solenoid directional control valve (D4) back and is connected with oil motor (M1) oil-in, oil motor (M1) oil-out connects reversal valve (D4) back and is connected with counterbalance valve (B1) oil-in, counterbalance valve (B1) oil-out is connected with fuel tank, while oil pump (P1) oil-out and overflow valve (B2), the relief circuit parallel connection that solenoid directional control valve (D2) is formed, overflow valve (B2) oil-out connect cooler (F1) back and are connected with fuel tank; What duplex pump assisted that pump (P2) oil-out is connected with check valve (G1) that back and accumulator (A1) connect and compose system holds the liquid loop, duplex pump is assisted pump (P2) oil-out and overflow valve (B3), the relief circuit parallel connection that solenoid directional control valve (D3) is formed, overflow valve (B3) oil-out connects cooler (F1) back and is connected with fuel tank, accumulator (A1) hydraulic fluid port connects pressure switch (R1), the accumulator hydraulic fluid port also links to each other with following three loops: a: be connected the back with flow speed control valve (T1) and be connected with one of them oil-in of solenoid directional control valve (D1), solenoid directional control valve (D1) another one oil-in is connected with proportional velocity regulating valve (E2) oil-out, solenoid directional control valve (D1) oil-out is connected with solenoid directional control valve (D6) pressure hydraulic fluid port, two work of solenoid directional control valve (D6) oil-out is connected with two working chambers of thimble oil cylinder (C2) respectively, and oil return opening then is connected the back and is connected with fuel tank with cooler (F1); B: be connected the back with flow speed control valve (T2) and be connected with solenoid directional control valve (D5) pressure hydraulic fluid port, two work of solenoid directional control valve (D5) oil-out is connected with two working chambers of hydraulic selector nozzle (C1) respectively, and its oil return opening then is connected with fuel tank; C: with by inserted valve (V1), (V2) and after the quick injection loop connection of corresponding control valve composition be connected with injection oil cylinder (C3) rod chamber, duplex pump main pump (P1) oil-out is through proportional pressure control valve (E1), and proportional velocity regulating valve (E2) links to each other with other work loops of machine.
2. injection moulding machine mould open according to claim 1, preformed, eject the synchronization action loop, it is characterized in that: oil pump (P1), oil pump (P2), oil pump (P3) is constant displacement pump, and oil pump (P1) makes up for duplex pump with oil pump (P2).
3. injection moulding machine mould open according to claim 1, preformed, eject the synchronization action loop, it is characterized in that: solenoid directional control valve (D1) is a two-position four-way formula solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620067140 CN200963900Y (en) | 2006-11-03 | 2006-11-03 | Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620067140 CN200963900Y (en) | 2006-11-03 | 2006-11-03 | Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine |
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| Publication Number | Publication Date |
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| CN200963900Y true CN200963900Y (en) | 2007-10-24 |
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| CN 200620067140 Expired - Fee Related CN200963900Y (en) | 2006-11-03 | 2006-11-03 | Die sinking, preplasticizing and pushing out synchronization movement circuit for injection molding machine |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410283A (en) * | 2011-10-19 | 2012-04-11 | 无锡市海航电液伺服***有限公司 | Hydraulic protection modular structure of servo actuator |
| CN104454714A (en) * | 2014-09-29 | 2015-03-25 | 武汉船用机械有限责任公司 | Hydraulic power control system for hydraulic plug type lifting system |
| CN104708787A (en) * | 2014-12-30 | 2015-06-17 | 湖南鑫高自动化设备有限公司 | Oil-way control method of injection-stretch-blow molding device |
| CN104819184A (en) * | 2015-03-27 | 2015-08-05 | 深圳大学 | Action separation or linkage control switching method of die sinking and pin ejecting technology |
| CN106321567A (en) * | 2015-06-29 | 2017-01-11 | 苏州盛恒兴自动化设备有限公司 | Method and implementation device for storing extra energy of hydraulic transmission system on line |
| CN109203400A (en) * | 2017-07-07 | 2019-01-15 | 云南科威液态金属谷研发有限公司 | A kind of hydraulic system of injection molding machine |
| CN113650252A (en) * | 2021-07-05 | 2021-11-16 | 海天塑机集团有限公司 | Hydraulic control loop for accelerating forming of PET raw material |
| CN114311580A (en) * | 2021-12-31 | 2022-04-12 | 宁波市海达塑料机械有限公司 | Injection molding machine pre-molding backpressure switching valve block |
| CN118082134A (en) * | 2024-04-18 | 2024-05-28 | 宁波力劲塑机智造有限公司 | Hydraulic system and special logistics machine for injection molding machine |
-
2006
- 2006-11-03 CN CN 200620067140 patent/CN200963900Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410283A (en) * | 2011-10-19 | 2012-04-11 | 无锡市海航电液伺服***有限公司 | Hydraulic protection modular structure of servo actuator |
| CN104454714A (en) * | 2014-09-29 | 2015-03-25 | 武汉船用机械有限责任公司 | Hydraulic power control system for hydraulic plug type lifting system |
| CN104708787A (en) * | 2014-12-30 | 2015-06-17 | 湖南鑫高自动化设备有限公司 | Oil-way control method of injection-stretch-blow molding device |
| CN104708787B (en) * | 2014-12-30 | 2017-02-22 | 湖南昊兴机械科技有限公司 | Oil-way control method of injection-stretch-blow molding device |
| CN104819184A (en) * | 2015-03-27 | 2015-08-05 | 深圳大学 | Action separation or linkage control switching method of die sinking and pin ejecting technology |
| CN106321567A (en) * | 2015-06-29 | 2017-01-11 | 苏州盛恒兴自动化设备有限公司 | Method and implementation device for storing extra energy of hydraulic transmission system on line |
| CN109203400A (en) * | 2017-07-07 | 2019-01-15 | 云南科威液态金属谷研发有限公司 | A kind of hydraulic system of injection molding machine |
| CN113650252A (en) * | 2021-07-05 | 2021-11-16 | 海天塑机集团有限公司 | Hydraulic control loop for accelerating forming of PET raw material |
| CN114311580A (en) * | 2021-12-31 | 2022-04-12 | 宁波市海达塑料机械有限公司 | Injection molding machine pre-molding backpressure switching valve block |
| CN114311580B (en) * | 2021-12-31 | 2024-02-02 | 宁波市海达塑料机械有限公司 | Injection molding machine pre-molding back pressure conversion valve block |
| CN118082134A (en) * | 2024-04-18 | 2024-05-28 | 宁波力劲塑机智造有限公司 | Hydraulic system and special logistics machine for injection molding machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |