CN206426423U - A kind of the injection moulding machine preforms organization hydraulic pressure controls oil circuit - Google Patents
A kind of the injection moulding machine preforms organization hydraulic pressure controls oil circuit Download PDFInfo
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- CN206426423U CN206426423U CN201621361111.6U CN201621361111U CN206426423U CN 206426423 U CN206426423 U CN 206426423U CN 201621361111 U CN201621361111 U CN 201621361111U CN 206426423 U CN206426423 U CN 206426423U
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- branch road
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- oil circuit
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- Injection Moulding Of Plastics Or The Like (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of the injection moulding machine preforms organization hydraulic pressure control oil circuit, the tie point extended including working connection and by working connection and the second branch road, the working connection provides hydraulic pressure by hydraulic power system, the tie point is connected to the rodless cavity oil inlet of hydraulic cylinder by being directed to working connection to the second check valve of tie point, hydraulic energy-accumulating module is provided with second branch road, the hydraulic energy-accumulating module includes being directed to working connection to the first check valve of the second branch road and the accumulator positioned at second branch terminal, the 3rd branch road is additionally provided with the oil circuit, one end of 3rd branch road is connected between the hydraulic cylinder of tie point and the second check valve, the other end is arranged between the first check valve of the second branch road and accumulator, damping is additionally provided with 3rd branch road, the setting can both avoid the second branch road from causing decompression to cause the unstable of hydraulic system because the transition of fluid is lost in, it may insure the pressure oil of hydraulic cylinder in whole oil circuit in addition to from hydraulic power system again simultaneously, also come from hydraulic energy-accumulating module all the way, the rodless cavity of hydraulic cylinder can be ensured pressure holding all the time, avoid material leakage.
Description
Technical field
The utility model is related to injection machine field, more specifically, it relates to which a kind of the injection moulding machine preforms organization hydraulic pressure is controlled
Oil circuit.
Background technology
Existing injection machine generally comprises and preformed screw rod is provided with preformed mechanism and injection mechanism, preformed mechanism, charging
Afterwards, at preformed screw spiral pusher to the melting of front end, by plastic melting into injection mechanism is entered after liquid, by injection mechanism
Hydraulic stem is pushed into pressing mold at mould.The pressure oil of the hydraulic cylinder of existing injecting mechanism comes from hydraulic power system.When preformed, liquid
The pressure oil driving pressure motor for pressing Force system carries out preformed action, while the rodless cavity that partial pressure oil enters hydraulic cylinder enters
Hydraulic fluid port, and preformed mechanism uses servomotor due to preformed, hydraulic power system is exported without pressure oil sometimes during preformed, is caused
Material leakage.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is：There is provided one kind can guarantee that machine in preformed
The oil inlet of hydraulic cylinder is always maintained at enough oil pressure, it is to avoid the novel hydraulic control for the injection moulding machine preforms mechanism that material leakage situation occurs
Oil circuit.
To achieve the above object, the utility model proposes new technical scheme：A kind of the injection moulding machine preforms organization hydraulic pressure control
Oil circuit, including working connection and the tie point extended by working connection and the second branch road, the working connection is by hydraulic power system
There is provided hydraulic pressure, the tie point by be directed to working connection to the second check valve of tie point be connected to hydraulic cylinder without bar
Hydraulic energy-accumulating module is provided with chamber oil inlet, second branch road, the hydraulic energy-accumulating module includes being directed to working connection extremely
The 3rd is additionally provided with first check valve of the second branch road and the accumulator positioned at second branch terminal, the oil circuit
Road, one end of the 3rd branch road is connected between the hydraulic cylinder of tie point and the second check valve, and the other end is arranged on second
Between first check valve and accumulator on road, damping is additionally provided with the 3rd branch road.
According to above-mentioned technical proposal：The 3rd branch road and damping are set up on original oil circuit, the effect of damping is to ensure note
When penetrating beginning, the pressure oil in hydraulic cylinder is essentially from hydraulic power system, it is to avoid the second branch road is led because the transition of fluid is lost in
Decompression is caused to cause the unstable of hydraulic system, while may insure the pressure oil of hydraulic cylinder in whole oil circuit except dynamic from hydraulic pressure
Outside Force system, also have and come from hydraulic energy-accumulating module all the way, when hydraulic power system voltage supply is not enough, be stored in hydraulic accumulator
In pressure oil can slowly release pressure oil be entered after tie point by the 3rd branch road and enters hydraulic pressure by damping
The rodless cavity of cylinder, can ensure the rodless cavity of hydraulic cylinder has pressure holding all the time, it is ensured that rodless cavity is effectively closed, and is prevented in screw rod
Raw material spill.
It is of the present utility model to be further arranged to：Also set between the tie point and the 3rd branch road intersection and hydraulic cylinder
It is equipped with pressure-reducing valve.
According to above-mentioned technical proposal：Pressure-reducing valve primarily serves the adjustment effect of gracefulness, when in tie point and the 3rd branch road
Oil pressure it is too high when, by the regulation of pressure-reducing valve itself, make to reduce by the oil pressure of pressure-reducing valve and ensure that reaching hydraulic cylinder enters
The oil pressure of hydraulic fluid port is stable.
It is of the present utility model to be further arranged to：Two-position four-way commutation is provided between the pressure-reducing valve and the hydraulic cylinder
Valve.
According to above-mentioned technical proposal：Two-position four way change valve is used for the action for controlling hydraulic cylinder, two-position four way change valve electricity
Magnet must not electricity when, P mouths of two-position four way change valve is logical A mouthfuls, when have pressure oil by when, pressure oil is into hydraulic cylinder without bar
Chamber oil inlet；When the electromagnet of two-position four way change valve obtains electric, two-position four way change valve commutation, pressure oil enters hydraulic cylinder
Rod chamber.
It is of the present utility model to be further arranged to：Pressure gauge is provided between first check valve and the accumulator.
According to above-mentioned technical proposal：Pressure gauge can be used to determine the oil pressure of the second branch road, convenient when there is voltage supply deficiency
Staff makes timely treatment measures.
It is of the present utility model to be further arranged to：Promising hydraulic pressure system is set between first check valve and the accumulator
The accumulation of energy oil circuit branch road that each pilot control opening of uniting is energized.
According to above-mentioned technical proposal：Preformed mechanism is due to using servomotor, sometimes there is not hydraulic power system during preformed
Pressure oil is exported, and causes each pilot control opening of hydraulic system to lack oil pressure, because savings have stable oil always in accumulator
Pressure, sets accumulation of energy oil circuit branch road to provide oil pressure for each pilot control opening.
The utility model is compared to the advantage of prior art：In the second check valve and pressurizing valve of original tie point
Between, between the first check valve of the second branch road and accumulator one article of the 3rd branch road is set up, due to whole oil circuit modules work
Pressure oil is different when making, sometimes also certain time interval, causes in whole pre-plastic process, the rodless cavity of hydraulic cylinder
There is fluctuation even without pressure feed in pressure, the 3rd branch road can provide pressure oil to each of accumulation of energy oil circuit branch road in accumulator
The rodless cavity that pressure oil all the way is supplied to hydraulic cylinder is separated while the pilot control opening of road, it is maintained pressure always, it is ensured that
Rodless cavity is effectively closed, and prevents the raw material in screw rod from spilling.
Brief description of the drawings
Fig. 1 is the injection moulding machine preforms mechanism controls asphalt principle figure in the prior art；
Fig. 2 is the injection moulding machine preforms mechanism controls asphalt principle figure in the present embodiment.
In figure：1st, hydraulic power system；2nd, pressure motor；3rd, hydraulic energy-accumulating module；301st, the first check valve；302nd, pressure
Table；303rd, accumulator；304th, accumulation of energy oil circuit branch road；4th, hydraulic cylinder；401st, rodless cavity；402nd, rod chamber；5th, preformed motor；6th,
Two check valves；7th, pressure-reducing valve；8th, two-position four way change valve；9th, working connection；10th, tie point；11st, the second branch road；12nd, the 3rd
Road；13rd, damp.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, so that the utility model skill
Art scheme is more readily understood and grasped.
Embodiment
The injection moulding machine preforms mechanism controls oil circuit in the prior art, including working connection 9 and extended by working connection 9 first
The branch road 11 of road 10 and second, the terminal of working connection 9 is provided with the hydraulic power system 1 to whole oil circuit discharge pressure, tie point 10
On be provided with hydraulic cylinder 4, the hydraulic cylinder 4 is provided with rodless cavity 401 and rod chamber 402, working connection 9 between hydraulic cylinder 4 according to
Secondary be provided with is directed to working connection 9 to the second check valve 6, pressure-reducing valve 7 and the two-position four way change valve 8 of hydraulic cylinder 4；Second branch road 11
On be provided with hydraulic energy-accumulating module 3, the hydraulic energy-accumulating module 3 includes the guiding that is set gradually along the branch road of working connection 9 to the second 11
For the first check valve 301 of the branch road of working connection 9 to the second 11, pressure gauge 302 and the accumulation of energy positioned at the terminal of the second branch road 11
Device 303, is provided with accumulation of energy oil circuit branch road 304 between first check valve 301 and accumulator 303.
Two-position four way change valve 8 is used for the action for controlling hydraulic cylinder 4, when the electromagnet of two-position four way change valve 8 must not be electric, two
The P mouths of position and four-way reversing valve 8 are logical A mouthful, when have pressure oil by when, rodless cavity 401 oil inlet of the pressure oil into hydraulic cylinder 4；
When the electromagnet of two-position four way change valve 8 obtains electric, two-position four way change valve 8 commutates, and pressure oil enters the rod chamber of hydraulic cylinder 4
402 oil inlets.When hydraulic power system 1 has pressure oil output, a part of pressure oil can go supply by the first check valve 301
Each road pilot control opening of accumulation of energy oil circuit branch road 304 in hydraulic energy-accumulating module 3, while a part of pressure oil enters accumulator 303
Middle storage.When 1 not pressure oil output of hydraulic power system, the pressure oil stored in accumulator 303 can be for safeguards system
The oil pressure of Zhong Ge roads pilot control opening.
During preformed, as the raw material in screw rod gets over Chu Yueduo, material pressure is constantly raised, and the rodless cavity 401 of hydraulic cylinder 4 must
There is oil pressure holding, just can guarantee that the effectively closing of rodless cavity 401, prevent the raw material in screw rod from spilling.Hydraulic cylinder 4 in the prior art
Driving oil pressure hydraulic power system 1 both is from as the driving oil pressure of preformed motor 5.Hydraulic power system 1 is defeated during preformed
Go out pressure and flow, pressure oil carries out preformed by driving pressure motor 2 from working connection 9 and moved；A part of pressure oil is autonomous simultaneously
Oil circuit 9 is along tie point 10 by the second check valve 6, and then pressure-reducing valve 7 enters hydraulic cylinder 4 by two-position four way change valve 8
The oil inlet of rodless cavity 401.Because the pressure oil of hydraulic cylinder 4 comes from hydraulic power system 1, during preformed, the drive screw of preformed motor 5
Rotate and carry out preformed, and now hydraulic system power unit need to export different pressure and the whole oil circuit modules of traffic driven
Work, pressure oil is different when work due to whole oil circuit modules, sometimes also certain time interval, causes entirely
In pre-plastic process, there is fluctuation even without pressure feed in the pressure of the rodless cavity 401 of hydraulic cylinder 4, such case may result in
Rodless cavity 401 can not effectively close and cause the generation of material leakage.
The problem of being proposed with reference to Fig. 1, the utility model controls oil circuit using a kind of novel hydraulic of the injection moulding machine preforms mechanism.
As shown in Fig. 2 setting up one article of the 3rd branch road 12, the one end of the 3rd branch road 12 is arranged on first check valve 301 and accumulator
Between 303, the other end is arranged between second check valve 6 and pressure-reducing valve 7, and damping is additionally provided with the 3rd branch road 12
13.During injection, the pressure oil of hydraulic cylinder 4 also has in addition to from hydraulic power system 1 and comes from hydraulic energy-accumulating module 3 all the way,
Accumulator 303 in the hydraulic energy-accumulating module 3 stores the fluid of high pressure always, for each guide in accumulation of energy oil circuit branch road 304
The holding of control mouth oil pressure.When preformed, the pressure oil of hydraulic cylinder 4 is in addition to the pressure oil of main system, the pressure of the 3rd branch road 12
Then power oil enter the oil inlet of rodless cavity 401 of nozzle oil cylinder through overdamp 13 and pressure-reducing valve 7 by two-position four way change valve 8.
Due to the presence of accumulator 303, can ensure the rodless cavity 401 of hydraulic cylinder 4 has pressure holding all the time, it is ensured that rodless cavity 401 has
Effect is closed, and prevents the raw material in screw rod from spilling.The effect of damping 13 is to ensure hydraulic cylinder 4 when injection starts to open, its
Pressure oil is essentially from system dynamic unit, it is to avoid guide's oil circuit causes decompression to cause hydraulic system because the transition of fluid is lost in
It is unstable.
Certainly, it is representative instance of the present utility model above, in addition, the utility model can also have other a variety of
The technical scheme of embodiment, all use equivalent substitutions or equivalent transformation formation, all falls within the utility model and is claimed
Within the scope of.
Claims (5)
1. a kind of the injection moulding machine preforms organization hydraulic pressure controls oil circuit, it is characterised in that prolong including working connection (9) and by working connection (9)
The tie point (10) and the second branch road (11) of stretching, the working connection (9) provide hydraulic pressure by hydraulic power system (1), described
Tie point (10) is connected to hydraulic cylinder (4) by being directed to working connection (9) to the second check valve (6) of tie point (10)
Hydraulic energy-accumulating module (3), the hydraulic energy-accumulating module (3) are provided with rodless cavity (401) oil inlet, second branch road (11)
Including being directed to working connection (9) to the first check valve (301) of the second branch road (11) and positioned at the second branch road (11) terminal
Accumulator (303), be additionally provided with the 3rd branch road (12) on the oil circuit, one end of the 3rd branch road (12) is connected in first
Between the hydraulic cylinder (4) and the second check valve (6) on road (10), the other end is arranged on the first check valve of the second branch road (11)
(301) between accumulator (303), damping (13) is additionally provided with the 3rd branch road (12).
2. a kind of the injection moulding machine preforms organization hydraulic pressure control oil circuit according to claim 1, it is characterised in that described first
Pressure-reducing valve (7) is additionally provided between road (10) and the 3rd branch road (12) intersection and hydraulic cylinder (4).
3. a kind of the injection moulding machine preforms organization hydraulic pressure control oil circuit according to claim 2, it is characterised in that the pressure-reducing valve
(7) two-position four way change valve (8) is provided between the hydraulic cylinder (4).
4. a kind of the injection moulding machine preforms organization hydraulic pressure control oil circuit according to claim 1, it is characterised in that described first is single
To being provided with pressure gauge (302) between valve (301) and the accumulator (303).
5. a kind of the injection moulding machine preforms organization hydraulic pressure control oil circuit according to claim 4, it is characterised in that described first is single
To the accumulation of energy oil circuit branch road that each pilot control opening energy supply of promising hydraulic system is set between valve (301) and the accumulator (303)
(304)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361111.6U CN206426423U (en) | 2016-12-08 | 2016-12-08 | A kind of the injection moulding machine preforms organization hydraulic pressure controls oil circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361111.6U CN206426423U (en) | 2016-12-08 | 2016-12-08 | A kind of the injection moulding machine preforms organization hydraulic pressure controls oil circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206426423U true CN206426423U (en) | 2017-08-22 |
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ID=59587565
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621361111.6U Active CN206426423U (en) | 2016-12-08 | 2016-12-08 | A kind of the injection moulding machine preforms organization hydraulic pressure controls oil circuit |
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| CN (1) | CN206426423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2016
- 2016-12-08 CN CN201621361111.6U patent/CN206426423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113650252B (en) * | 2021-07-05 | 2023-05-12 | 海天塑机集团有限公司 | Hydraulic control loop for accelerating PET raw material molding |
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