CN105538624B - A kind of injection moulding machine mode-locking system and its oil circuit control method - Google Patents
A kind of injection moulding machine mode-locking system and its oil circuit control method Download PDFInfo
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- CN105538624B CN105538624B CN201610049949.XA CN201610049949A CN105538624B CN 105538624 B CN105538624 B CN 105538624B CN 201610049949 A CN201610049949 A CN 201610049949A CN 105538624 B CN105538624 B CN 105538624B
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- mode
- locking
- oil
- unicom
- oil circuit
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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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
- B29C2045/826—Plurality of hydraulic actuators driven by one hydraulic pump
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a kind of injection moulding machine mode-locking system, belong to hydraulic transmission technology field.The problem of it solves the clamping system locked mode effect difference for being currently used for injection machine.This injection moulding machine mode-locking system includes：Fuel tank, for storing fluid；First oil circuit, with fuel tank UNICOM and for delivering oil；Second oil circuit, with fuel tank UNICOM and for delivering oil；Mode-locking oil cylinder, be set to multiple and each Mode-locking oil cylinder with the first oil circuit UNICOM；Cutting unit, is corresponded with Mode-locking oil cylinder, and cutting unit is with the second oil circuit UNICOM and for driving corresponding Mode-locking oil cylinder to carry out locked mode.The present invention has the advantages that individually adjust clamp force and locked mode effect is good.
Description
Technical field
The invention belongs to hydraulic transmission technology field, it is related to a kind of injection moulding machine mode-locking system and its oil circuit control method.
Background technology
Injection machine is generally by injecting systems, Clamping System, Hydraulic Power Transmission System, electric control system, lubricating system, heating
And the composition such as cooling system, safety monitoring system.Wherein, the effect of Clamping System is to ensure mould closure, open and ejection production
Product.Meanwhile, after the mold is closed, the enough clamp forces of injection machine supply mould, to resist molten plastic into die cavity generation
Cavity pressure, it is to avoid mould cracks and causes the underproof phenomenon of product to occur.
To ensure the quality of injecting products, locking force of injection machine must be greater than cavity pressure, the lock of same injection machine
Mould power scope is certain, it is impossible to meet the mould of a variety of different cavity pressures, and utilization rate of equipment and installations is low, and injection production when cost compared with
It is high.
In addition, mostly using each Mode-locking oil cylinder is uniformly controlled during existing injection moulding machine mode-locking, locked mode is rigidly relatively low,
Unavoidable to allow mould phenomenon (i.e. mould cracks), injecting products easily produce overlap, reduce product quality.
Particularly when carrying out locked mode to eccentric mould, the defect of each Mode-locking oil cylinder is uniformly controlled with regard to more obvious, nothing
Method pointedly adjusts clamp force, so as to cause the higher scrappage of product.
In summary, for the clamping system that solves to be currently used for injection machine deficiency, it is necessary to design it is a kind of it is reasonable in design, can
Individually adjust clamp force and the good injection moulding machine mode-locking system of locked mode effect.
The content of the invention
The purpose of the present invention is there is above mentioned problem for existing technology, it is proposed that one kind is reasonable in design, can individually adjust
Save clamp force and the good injection moulding machine mode-locking system of locked mode effect.
The purpose of the present invention can be realized by following technical proposal：A kind of injection moulding machine mode-locking system, including：
Fuel tank, for storing fluid；
First oil circuit, with fuel tank UNICOM and for delivering oil；
Second oil circuit, with fuel tank UNICOM and for delivering oil；
Mode-locking oil cylinder, be set to multiple and each Mode-locking oil cylinder with the first oil circuit UNICOM；
Cutting unit, is corresponded with Mode-locking oil cylinder, and the cutting unit is with the second oil circuit UNICOM and corresponding for driving
Mode-locking oil cylinder carry out locked mode.
In a kind of above-mentioned injection moulding machine mode-locking system, each cutting unit includes cutting with corresponding Mode-locking oil cylinder UNICOM
Disconnected valve, is provided with pilot valve on stop valve, and the pilot valve is joined by shuttle valve and the second oil circuit UNICOM and pilot valve with fuel tank
It is logical.
In a kind of above-mentioned injection moulding machine mode-locking system, the Mode-locking oil cylinder has a locking piston bar and locking piston bar
Mode-locking oil cylinder is divided into rod chamber and rodless cavity, the rod chamber and stop valve UNICOM, the rodless cavity and the first oil circuit join
It is logical.
In a kind of above-mentioned injection moulding machine mode-locking system, the rod chamber passes through overflow valve and fuel tank UNICOM.
In a kind of above-mentioned injection moulding machine mode-locking system, pressure sensor and each pressure are respectively connected with each Mode-locking oil cylinder
Sensor with corresponding rod chamber UNICOM.
A kind of oil circuit control method of injection moulding machine mode-locking system, is comprised the following steps that：
Pilot valve is closed so that stop valve is in opening, and fluid has through the second oil circuit, stop valve entrance
Rod cavity simultaneously promotes locking piston bar to move inward, and the fluid of rodless cavity is through the first oil circuit oil return；
Opening pilot valve causes stop valve to be closed, now Mode-locking oil cylinder formation closing chamber, and each oil circuit, which is in, to be protected
Pressure condition, locking piston bar position keeps constant；
Closing pilot valve causes stop valve to be again at opening, and fluid enters rodless cavity through the first oil circuit and promotes lock
Mould piston rod is displaced outwardly, and the fluid in rod chamber is successively through stop valve, the second oil circuit oil return.
Compared with prior art, the present invention being equipped with using stop valve and pilot valve, in locked mode by Mode-locking oil cylinder
Closing, locked mode rigidity when improving injection, it is to avoid allow the generation of mould phenomenon, so as to improve the quality of product；In addition, each lock
Mould oil cylinder uses the form of independent control, and internal oil pressure can be adjusted according to External infusion power, and regulation is reliable；And be particularly suitable for use in partially
Heart mould, using effect is good.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
In figure, 10, fuel tank；21st, the first oil circuit；22nd, the second oil circuit；30th, Mode-locking oil cylinder；31st, rod chamber；32nd, rodless cavity；
33rd, locking piston bar；40th, stop valve；50th, pilot valve；60th, shuttle valve；70th, overflow valve.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in figure 1, this injection moulding machine mode-locking system includes：
Fuel tank 10, for storing fluid；
First oil circuit 21, with the UNICOM of fuel tank 10 and for delivering oil；
Second oil circuit 22, with the UNICOM of fuel tank 10 and for delivering oil；
Mode-locking oil cylinder 30, be set to multiple and each Mode-locking oil cylinder 30 with the UNICOM of the first oil circuit 21；
Cutting unit, is corresponded with Mode-locking oil cylinder 30, and cutting unit is with the UNICOM of the second oil circuit 22 and corresponding for driving
Mode-locking oil cylinder 30 carry out locked mode.
Mould phenomenon is allowed to avoid mould from producing, it is ensured that the quality of injecting products, locking force of injection machine must be greater than die cavity
Pressure, but the clamp force scope of same injection machine is certain, it is impossible to meet the mould of a variety of different cavity pressures, equipment utilization
Rate is low, and cost is higher during injection production.
In addition, mostly using each Mode-locking oil cylinder 30 is uniformly controlled during existing injection moulding machine mode-locking, locked mode is rigidly relatively low, keeps away
Mould phenomenon can unavoidably be allowed, injecting products easily produce overlap, and product quality is low.Particularly locked to eccentric mould
During mould, the defect for being uniformly controlled each Mode-locking oil cylinder 30 is just more obvious, it is impossible to pointedly adjust clamp force, so as to cause production
The higher scrappage of product.
Therefore, the present invention devises a kind of injection moulding machine mode-locking system, using the Mode-locking oil cylinder 30 being independently arranged, while
Cutting unit is respectively mounted on each Mode-locking oil cylinder 30, to make the corresponding formation of Mode-locking oil cylinder 30 envelope when completing high-voltage lock mould
Closed chamber, so can autobalance external and internal pressure, improve locked mode rigidity, it is to avoid generation allows mould phenomenon, so as to improve product
Quality.
Preferably, each cutting unit includes the stop valve 40 with the corresponding UNICOM of Mode-locking oil cylinder 30, on stop valve 40
Pilot valve 50 is installed, pilot valve 50 passes through the UNICOM of 60 and second oil circuit of shuttle valve 22 and pilot valve 50 and the UNICOM of fuel tank 10.
Specifically, in the present embodiment, control stop valve 40 to close by pilot valve 50, and then control Mode-locking oil cylinder 30 to turn into
Closing chamber, so as to realize the function of automatically adjusting internal pressure.Wherein, the setting of shuttle valve 60 is that a part of fluid is made for convenience
For the open and close of control oil control stop valve 40.
Wherein, pilot valve 50 also with the UNICOM of fuel tank 10, when control oil by shuttle valve 60, pilot valve 50 enter stop valve 40 when
(i.e. pilot valve 50 is in opening), control oil, which produces pressure, closes stop valve 40；Conversely, when pilot valve 50 is closed,
Control oil can not enter stop valve 40 through shuttle valve 60, pilot valve 50, be now initially positioned at the control oil in stop valve 40 through guide
Valve 50 directly flows back to fuel tank 10, and stop valve 40 is in opening, and fluid can pass in and out stop valve 40.
It is further preferred that Mode-locking oil cylinder 30 has a locking piston bar 33 and locking piston bar 33 by 30 points of Mode-locking oil cylinder
Into rod chamber 31 and rodless cavity 32, rod chamber 31 and the UNICOM of stop valve 40, the UNICOM of 32 and first oil circuit of rodless cavity 21.
During high-voltage lock mould, fluid enters the rod chamber 31 of Mode-locking oil cylinder 30, rodless cavity 32 through the second oil circuit 22, stop valve 40
Interior fluid is through the first oily oil return.
Preferably, rod chamber 31 passes through overflow valve 70 and the UNICOM of fuel tank 10.The setting of overflow valve 70 can be to rod chamber 31
Protected, it is to avoid because stop valve 40 is damaged and the phenomenon of hypertonia occur, when the oil pressure of rod chamber 31 reaches overflow valve 70
Opening pressure when, the fluid in rod chamber 31 can flow back to fuel tank 10 through overflow valve 70；
It is further preferred that be respectively connected with pressure sensor on each Mode-locking oil cylinder 30 and each pressure sensor with it is corresponding
The UNICOM of rod chamber 31.
In the present embodiment, each Mode-locking oil cylinder 30 is is independently arranged, during high-voltage lock mould, after the formation closing chamber of Mode-locking oil cylinder 30
The different pressures that can be subject to according to present position automatically adjust internal oil pressure pressure (i.e. clamp force), to balance internal oil pressure pressure
Power and outside injection pressure, are conducive to the pressure balance of whole mould, it is to avoid generation allows mould phenomenon, contributes to production high-quality
Product.
Respective pressure sensor is respectively connected with each Mode-locking oil cylinder 30, pressure sensor can detect correspondence locked mode oil
The pressure of cylinder 30, is easy to operator to control related work process according to the size of pressure.
Present invention also offers a kind of oil circuit control method of injection moulding machine mode-locking system, one of them is cut in the present embodiment
Disconnected unit is illustrated, and is comprised the following steps that：
The first step：Pilot valve 50 be closed so that stop valve 40 be in opening, fluid through the second oil circuit 22,
Stop valve 40 enters rod chamber 31 and simultaneously promotes locking piston bar 33 to move inward, and the fluid of rodless cavity 32 is through the first oil circuit 21 times
Oil；
Now injection machine is in high-voltage lock mould state, and fluid sequentially enters stop valve 40, rod chamber 31 through the second oil circuit 22,
Promote locking piston bar 33 to move inward and by the fluid of rodless cavity 32 by the draining of the first oil circuit 21, complete high-voltage lock mould work.
The pressure value whether pressure that can be detected according to pressure sensor reaches locked mode herein needed for come judge high pressure lock
Whether mould has completed.
Second step：Opening pilot valve 50 causes stop valve 40 to be closed, the now formation of Mode-locking oil cylinder 30 closing chamber,
Each oil circuit is in packing state, and the position of locking piston bar 33 keeps constant；
After the completion of high-voltage lock mould, pilot valve 50 is opened, part controls oil to enter pilot valve 50 through shuttle valve 60 and control to cut
Disconnected valve 40 is closed, the formation closing chamber of Mode-locking oil cylinder 30, and now Mode-locking oil cylinder 30 can adjust itself according to External infusion pressure
Oil pressure pressure, it is ensured that pressure balance.
3rd step：Closing pilot valve 50 causes stop valve 40 to be again at opening, and fluid enters through the first oil circuit 21
Rodless cavity 32 simultaneously promotes locking piston bar 33 to be displaced outwardly, and the fluid in rod chamber 31 is successively through stop valve 40, the second oil circuit 22
Oil return.
After completion is injected, pilot valve 50 is closed, the control oil being initially positioned in stop valve 40 is direct through pilot valve 50
Fuel tank 10 is flowed back to, stop valve 40 is opened.Now, fluid promotes locking piston bar 33 outside through the first oil circuit 21 into rodless cavity 32
Fluid in rod chamber 31 is simultaneously carried out draining by movement by stop valve 40, the backtracking of the second oil circuit 22.
It is a folding mold process of injection machine above, after once completing, is recycled and carries out above-mentioned work.
The present invention is reasonable in design, using being equipped with for stop valve 40 and pilot valve 50, in locked mode by Mode-locking oil cylinder 30
Closing, while form of each Mode-locking oil cylinder 30 using independent control, can adjust internal oil pressure, it is to avoid allow according to External infusion power
The generation of mould phenomenon, so as to improve the quality of product, is worth widely using.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (5)
1. a kind of injection moulding machine mode-locking system, it is characterised in that including：
Fuel tank, for storing fluid；
First oil circuit, with fuel tank UNICOM and for delivering oil；
Second oil circuit, with fuel tank UNICOM and for delivering oil；
Mode-locking oil cylinder, be set to multiple and each Mode-locking oil cylinder with the first oil circuit UNICOM, each Mode-locking oil cylinder is independently arranged；
Cutting unit, is corresponded with Mode-locking oil cylinder, and the cutting unit is with the second oil circuit UNICOM and for driving corresponding lock
Mould oil cylinder carries out locked mode, and when high-voltage lock mould, Mode-locking oil cylinder formation closing chamber is simultaneously automatic according to the different pressures of present position
Adjust internal oil pressure pressure；
Each cutting unit includes the stop valve with corresponding Mode-locking oil cylinder UNICOM, and pilot valve is provided with stop valve, described
Pilot valve passes through shuttle valve and the second oil circuit UNICOM and pilot valve and fuel tank UNICOM.
2. a kind of injection moulding machine mode-locking system according to claim 1, it is characterised in that the Mode-locking oil cylinder has a locked mode
Mode-locking oil cylinder is divided into rod chamber and rodless cavity, the rod chamber and stop valve UNICOM by piston rod and locking piston bar, described
Rodless cavity and the first oil circuit UNICOM.
3. a kind of injection moulding machine mode-locking system according to claim 2, it is characterised in that the rod chamber by overflow valve with
Fuel tank UNICOM.
4. a kind of injection moulding machine mode-locking system according to Claims 2 or 3, it is characterised in that connect on each Mode-locking oil cylinder
Be connected to pressure sensor and each pressure sensor with corresponding rod chamber UNICOM.
5. the oil circuit control method of a kind of injection moulding machine mode-locking system according to claim 2-4, it is characterised in that including step
Suddenly：
Pilot valve is closed so that stop valve is in opening, and fluid enters rod chamber through the second oil circuit, stop valve
And promoting locking piston bar to move inward, the fluid of rodless cavity is through the first oil circuit oil return；
Opening pilot valve causes stop valve to be closed, and now Mode-locking oil cylinder formation closing chamber, each oil circuit is in pressurize shape
State, locking piston bar position keeps constant；
Closing pilot valve causes stop valve to be again at opening, and fluid enters rodless cavity through the first oil circuit and promotes locked mode to live
Stopper rod is displaced outwardly, and the fluid in rod chamber is successively through stop valve, the second oil circuit oil return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610049949.XA CN105538624B (en) | 2016-01-25 | 2016-01-25 | A kind of injection moulding machine mode-locking system and its oil circuit control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610049949.XA CN105538624B (en) | 2016-01-25 | 2016-01-25 | A kind of injection moulding machine mode-locking system and its oil circuit control method |
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| CN105538624A CN105538624A (en) | 2016-05-04 |
| CN105538624B true CN105538624B (en) | 2017-11-07 |
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| CN108058353A (en) * | 2018-01-19 | 2018-05-22 | 欧任伍 | A kind of two trigger locked mode control systems and its oil circuit control method |
| CN112045960B (en) * | 2020-08-25 | 2023-09-12 | 天津莫尼特精密机械有限公司 | Large plastic injection molding method |
| CN115338387B (en) * | 2022-10-18 | 2023-02-03 | 泰瑞机器股份有限公司 | Three-plate type direct-pressure mold locking device and die casting machine |
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| WO2013120194A1 (en) * | 2012-02-13 | 2013-08-22 | Husky Injection Molding Systems Ltd. | Flow of hydraulic fluid from accumulator assembly and from pump assembly to actuator where higher flow is required |
| CN202668939U (en) * | 2012-08-13 | 2013-01-16 | 宁波华美达机械制造有限公司 | Mold locking circuit for injection mold machine |
| CN203092979U (en) * | 2012-11-28 | 2013-07-31 | 中山力劲机械有限公司 | Injection molding machine hydraulic system for eliminating die sinking abnormal sounds |
| CN104085094A (en) * | 2014-05-22 | 2014-10-08 | 杭州硕博物资有限公司 | Die opening thimble synchronizing loop of single pump system injection molding machine |
| CN205522360U (en) * | 2016-01-25 | 2016-08-31 | 海天塑机集团有限公司 | Injection molding machine mode locking system |
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