CN106079335A - The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method - Google Patents
The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method Download PDFInfo
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- CN106079335A CN106079335A CN201610633267.3A CN201610633267A CN106079335A CN 106079335 A CN106079335 A CN 106079335A CN 201610633267 A CN201610633267 A CN 201610633267A CN 106079335 A CN106079335 A CN 106079335A
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- Prior art keywords
- electromagnetic valve
- oil
- cold
- valve
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76732—Mould
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76822—Phase or stage of control
- B29C2945/76859—Injection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of temperature varied cyclical system and the temperature varied cyclical method of injection mold, can be in the different time sections of injection moulding process, it is thus achieved that different mold temperatures.In the blood circulation of the present invention, with high temperature high-termal conductivity oil as heat transfer medium, the hot oil pump of identical flow velocity and cold oil pump, by switching into the cold and hot oil circuit in heating equipment, the different oil temperatures controlling injection heating equipment injection mold realize the different temperatures requirement of injection molding process.
Description
Technical field
The present invention relates to a kind of injection mold temperature varying system and Temp change method.
Background technology
Injection molding goods are sent out in the national economy every profession and trades such as agricultural, national defense construction, transportation, instrument and meter
Waving highly important effect, but by traditional injection moulding technological forming goods, there is inborn deficiency, the goods of molding can not be kept away
That exempts from also exists many defects, common are goods low precision, to lack material (die cavity underfill), shrink, surface indentation, weld mark bright
Show, goods internal stress is big, during the demoulding or use, the serious problems such as cracking occur.In drawbacks described above, major part is due to note
Moulding what technique itself was brought, the most most of high polymer molten viscosity are big, and mold filling by force in low temperature die cavity, in the highest shearing
Under stress, cooling causes the most eliminable internal stress rapidly.Current Normal practice is exactly, and during mold injection, uses mould temperature
Machine, makes mould be increased to uniform temperature, so can improve the mobile performance of plastic melt, reduces the internal stress of goods, but because of
For the factor of injection cycle to be considered, so the temperature of mould can not rise so high, thus constrain fluidity of molten and subtract
The further improvement of few goods internal stress.
Summary of the invention
It is an object of the invention to provide the temperature varied cyclical system of a kind of injection mold and corresponding temperature varied cyclical method, can
With the different time sections at injection moulding process, it is thus achieved that different mold temperatures.
Present invention provide the technical scheme that
The temperature varied cyclical system of a kind of injection mold, including Circulation and Hot Oil Spray module, cold oil loop module, Circulation and Hot Oil Spray module includes
The deep fat groove that is sequentially connected with by oil pipe, hot oil pump, electric heater, the first thermometer, deep fat flow control valve, the first electromagnetism
Valve, heating equipment, the 3rd electromagnetic valve, the 3rd electromagnetic valve is connected to deep fat groove by oil pipe again, parallel connection first on the 3rd electromagnetic valve
Hand control valve；
Cold oil groove that cold oil loop module includes being sequentially connected with by oil pipe, cold oil pump, cold oil flow control valve, the second electromagnetism
Valve, heating equipment, the second thermometer, the 4th electromagnetic valve, the 4th electromagnetic valve is connected to cold oil groove by oil pipe again, the 4th electromagnetic valve
Upper second-hand's brake control valve in parallel, is provided with cooling system in cold oil groove.
Connecting in described Circulation and Hot Oil Spray module and have the first pressure-regulating valve, described cold oil loop module connects the
Two pressure-regulating valves.
A kind of temperature varied cyclical method of injection mold, uses Circulation and Hot Oil Spray module, cold oil loop module, Circulation and Hot Oil Spray module
Including the deep fat groove being sequentially connected with by oil pipe, hot oil pump, electric heater, the first thermometer, deep fat flow control valve, the first electricity
Magnet valve, heating equipment, the 3rd electromagnetic valve, the 3rd electromagnetic valve is connected to deep fat groove by oil pipe again, on the 3rd electromagnetic valve in parallel the
One hand control valve；
Cold oil groove that cold oil loop module includes being sequentially connected with by oil pipe, cold oil pump, cold oil flow control valve, the second electromagnetism
Valve, heating equipment, the second thermometer, the 4th electromagnetic valve, the 4th electromagnetic valve is connected to cold oil groove by oil pipe again, the 4th electromagnetic valve
Upper second-hand's brake control valve in parallel, is provided with cooling system in cold oil groove；
First the first electromagnetic valve and the first electromagnetic valve are closed, start hot oil pump and cold oil pump, and make electrical heating
Cooling system in device and cold oil groove is all in normal operating conditions, when the oil temperature of deep fat groove reaches design temperature, opens
One electromagnetic valve and first manual control valve, deep fat heats mould by heating equipment, when heating equipment reaches design temperature, the
One closed electromagnetic valve, first manual control valve closes, and records heating mould to the time t1 used by design temperature, opens the
Two electromagnetic valves, second-hand's brake control valve, start logical cold oil cooling mould, when heating equipment is cooled to design temperature, the second electricity
Magnet valve close, second-hand's brake control valve close, and record cooling mould to the time t2 used by design temperature,
Then set service time of the first electromagnetic valve as t1, set service time of the second electromagnetic valve as t2, close first-hand
Brake control valve, second-hand's brake control valve, in calculating exhausts heating equipment simultaneously, the time of oil is t3, as foundation time delay；
Then opening the first electromagnetic valve, service time is t1, sets the 4th electromagnetic valve and delays the shut-in time as t3, makes the cold of system
Oil flows back to cold oil groove, when the 4th electromagnetic valve delays the cut out t3 time then, and the 3rd electromagnetic valve is opened, it is ensured that deep fat backheat oil groove,
When logical deep fat time t1 then after, the second electromagnetic valve is opened, and service time is t2, in like manner set the 3rd electromagnetic valve delay pass
The time of closing is t3, it is ensured that deep fat returns complete backheat oil groove, so circulates.
In the blood circulation of the present invention, with high temperature high-termal conductivity oil as heat transfer medium, the hot oil pump of identical flow velocity and cold
Oil pump, by switching into the cold and hot oil circuit in heating equipment, the different oil temperatures controlling to inject heating equipment injection mold are come real
The different temperatures requirement of existing injection molding process.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings.
Seeing Fig. 1, the temperature varied cyclical system of a kind of injection mold, including Circulation and Hot Oil Spray module, cold oil loop module, deep fat
Deep fat groove 3 that loop module includes being sequentially connected with by oil pipe, hot oil pump 2, electric heater the 6, first thermometer T1, deep fat flow
Regulation valve 8-1, the first electromagnetic valve 9-1, heating equipment the 1, the 3rd electromagnetic valve 9-3, the 3rd electromagnetic valve 9-3 are connected to by oil pipe again
Deep fat groove 3, first manual control valve 10-1 in parallel on the 3rd electromagnetic valve 9-3；Cold oil loop module includes being connected successively by oil pipe
The cold oil groove 5 that connects, cold oil pump 4, cold oil flow control valve 8-2, the second electromagnetic valve 9-2, heating equipment the 1, second thermometer T2,
Four electromagnetic valve 9-4, the 4th electromagnetic valve 9-4 are connected to cold oil groove 5 by oil pipe again, and on the 4th electromagnetic valve 9-4, parallel connection second is manual
Control valve 10-2, is provided with cooling system in cold oil groove 5.Connect in Circulation and Hot Oil Spray module and have the first pressure-regulating valve 11-1, institute
Connect in the cold oil loop module stated and have the second pressure-regulating valve 11-2.
First the first electromagnetic valve 9-1 and the first electromagnetic valve 9-2 is closed, starts hot oil pump 2 and cold oil pump 4,
And make the cooling system in electric heater 6 and cold oil groove 5 all in normal operating conditions, due to the first electromagnetic valve 9-1 and
One electromagnetic valve 9-2 is closed, when the oil pressure of oil pump reaches the setting pressure 0.2MPa of pressure-regulating valve, and deep fat and cold
Oil flows back to deep fat groove 3 and cold oil groove 5 automatically by pressure-regulating valve, makes deep fat and cold oil be in turbulence state and accelerates the biography of heat
Pass；When the oil temperature of deep fat groove 3 reaches design temperature 200 DEG C, open the first electromagnetic valve 9-1 and first manual control valve 10-1,
Deep fat heats mould by heating equipment 1, when heating equipment 1 reaches design temperature (more than the melt temperature of plastics), and first
Electromagnetic valve 9-1 close, first manual control valve 10-1 close, and record heating mould to the time t1 used by design temperature,
Open the second electromagnetic valve 9-2, second-hand brake control valve 10-2, start logical cold oil cooling mould, when heating equipment 1 is cooled to set
During temperature (the ejecting temperature of plastics), the second electromagnetic valve 9-2 closes, and second-hand brake control valve 10-2 closes, and records cooling
Mould to the time t2 used by design temperature,
Then set service time of the first electromagnetic valve 9-1 as t1, set service time of the second electromagnetic valve 9-2 as t2, close
First manual control valve 10-1, second-hand brake control valve 10-2, in calculating exhausts heating equipment 1 simultaneously, the time of oil is T3, makees
For foundation time delay；
Then opening the first electromagnetic valve 9-1, service time is t1, sets the 4th electromagnetic valve 9-4 and delays the shut-in time as t3, make be
The cold oil of system flows back to cold oil groove, when the 4th electromagnetic valve 9-4 delays the closedown t3 time then, and the 3rd electromagnetic valve 9-3 opens, it is ensured that heat
Oil backheat oil groove, when logical deep fat time t1 then after, the second electromagnetic valve 9-2 opens, and service time is t2, in like manner sets the
It is t3 that three electromagnetic valve 9-3 delay the shut-in time, it is ensured that deep fat returns complete backheat oil groove, so circulates.Make mold temperature in difference
Injection cycle in, have different variations in temperature, meet injection molding process, produce the requirement of high-quality goods.
Utilizing high temperature high-termal conductivity oil as heat transfer medium, the turnover flowing at a high speed in a mold of heating fluid oil, Reynolds refers to
Number (Re) reaches 60000, promotes heat transfer coefficient, the hot oil pump 2 of identical flow velocity and cold oil pump 4 so that it is the heating to heating equipment 1
With cooling balance.Deep fat electric heater 6 laser heating, cold oil is carried out continuously cooling by the cooling recirculation system in cold oil groove 5.
Owing to the mold injection cycle is shorter, in order to improve the service life of oil pump, so using oil pump to work continuously, rely on the first pressure
Regulation valve 11-1, the second pressure-regulating valve 11-2 change the flow path of oil.High temperature oil controls at 190 DEG C, and low-temperature oil is 30
DEG C, the target temperature of die surface is high temperature 150 DEG C, low temperature 45 DEG C.In order to improve the work efficiency of heating and save the energy, mould
During tool heating, logical deep fat and deep fat backheat oil groove 3；During mould cooling, logical cold oil, cold oil returns cold oil groove 5, it is ensured that deep fat and cold
Oil will not be mutually mixed.Although cold and hot oil will not mix mutually when normal circulation, but the short time switched at hot and cold oil
The most still have a small amount of deep fat in Die Oil passage and enter cold oil system, otherwise the cold oil in runner also can enter heat when switching
Oil system.The mixing of cold and hot oil during in order to reduce switching as far as possible, uses oil return delay switching technology, when the deep fat entered switches to
During cold oil, oil return line wouldn't be switched to cold oil road, and after the deep fat in Die Oil passage is replaced soon by cold oil, oil return is cut again
Change cold oil road into, finally complete being fully disconnected of cold and hot oil system.
Claims (3)
1. the temperature varied cyclical system of an injection mold, it is characterised in that include Circulation and Hot Oil Spray module, cold oil loop module, heat
Deep fat groove (3) that oil circulation module includes being sequentially connected with by oil pipe, hot oil pump (2), electric heater (6), the first thermometer
(T1), deep fat flow control valve (8-1), the first electromagnetic valve (9-1), heating equipment (1), the 3rd electromagnetic valve (9-3), the 3rd electromagnetism
Valve (9-3) is connected to deep fat groove (3) by oil pipe again, the upper first manual control valve (10-1) in parallel of the 3rd electromagnetic valve (9-3)；Cold
Cold oil groove (5) that oil circulation module includes being sequentially connected with by oil pipe, cold oil pump (4), cold oil flow control valve (8-2), second
Electromagnetic valve (9-2), heating equipment (1), the second thermometer (T2), the 4th electromagnetic valve (9-4), the 4th electromagnetic valve (9-4) passes through again
Oil pipe is connected to cold oil groove (5), the upper second-hand's brake control valve (10-2) in parallel of the 4th electromagnetic valve (9-4), arranges in cold oil groove (5)
There is cooling system.
The temperature varied cyclical system of a kind of injection mold the most according to claim 1, it is characterised in that described Circulation and Hot Oil Spray
Connecting in module and have the first pressure-regulating valve (11-1), described cold oil loop module connects the second pressure-regulating valve (11-
2).
3. the temperature varied cyclical method of an injection mold, it is characterised in that use Circulation and Hot Oil Spray module, cold oil loop module, heat
Deep fat groove (3) that oil circulation module includes being sequentially connected with by oil pipe, hot oil pump (2), electric heater (6), the first thermometer
(T1), deep fat flow control valve (8-1), the first electromagnetic valve (9-1), heating equipment (1), the 3rd electromagnetic valve (9-3), the 3rd electromagnetism
Valve (9-3) is connected to deep fat groove (3) by oil pipe again, the upper first manual control valve (10-1) in parallel of the 3rd electromagnetic valve (9-3)；Cold
Cold oil groove (5) that oil circulation module includes being sequentially connected with by oil pipe, cold oil pump (4), cold oil flow control valve (8-2), second
Electromagnetic valve (9-2), heating equipment (1), the second thermometer (T2), the 4th electromagnetic valve (9-4), the 4th electromagnetic valve (9-4) passes through again
Oil pipe is connected to cold oil groove (5), the upper second-hand's brake control valve (10-2) in parallel of the 4th electromagnetic valve (9-4), arranges in cold oil groove (5)
There is cooling system；
First the first electromagnetic valve (9-1) and the first electromagnetic valve (9-2) are closed, start hot oil pump (2) and cold oil pump
(4), and make the cooling system in electric heater (6) and cold oil groove (5) all in normal operating conditions, when deep fat groove (3)
When oil temperature reaches design temperature, opening the first electromagnetic valve (9-1) and first manual control valve (10-1), deep fat passes through heating equipment
(1) heating mould, when heating equipment (1) reaches design temperature, the first electromagnetic valve (9-1) cuts out, first manual control valve
(10-1) close, and record heating mould to the time t1 used by design temperature, open the second electromagnetic valve (9-2), second-hand
Brake control valve (10-2), starts logical cold oil cooling mould, when heating equipment (1) is cooled to design temperature, the second electromagnetic valve (9-
2) close, second-hand's brake control valve (10-2) close, and record cooling mould to the time t2 used by design temperature,
Then set service time of the first electromagnetic valve (9-1) as t1, set service time of the second electromagnetic valve (9-2) as t2,
Close first manual control valve (10-1), second-hand's brake control valve (10-2), calculate simultaneously exhaust oil in heating equipment (1) time
Between be t3, as foundation time delay；
Then opening the first electromagnetic valve (9-1), service time is t1, sets the 4th electromagnetic valve (9-4) and delays the shut-in time as t3,
The cold oil making system flows back to cold oil groove, when the 4th electromagnetic valve (9-4) delays the cut out t3 time then, and the 3rd electromagnetic valve (9-3) is beaten
Open, it is ensured that deep fat backheat oil groove, when logical deep fat time t1 then after, the second electromagnetic valve (9-2) is opened, and service time is
T2, in like manner sets the 3rd electromagnetic valve (9-3) and delays the shut-in time as t3, it is ensured that deep fat returns complete backheat oil groove, so circulates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610633267.3A CN106079335A (en) | 2016-08-04 | 2016-08-04 | The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610633267.3A CN106079335A (en) | 2016-08-04 | 2016-08-04 | The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method |
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| Publication Number | Publication Date |
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| CN106079335A true CN106079335A (en) | 2016-11-09 |
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|---|---|---|---|
| CN201610633267.3A Pending CN106079335A (en) | 2016-08-04 | 2016-08-04 | The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435193A (en) * | 2018-12-07 | 2019-03-08 | 深圳市飞荣达科技股份有限公司 | A kind of PCB production mould |
| CN111537854A (en) * | 2020-05-14 | 2020-08-14 | 哈尔滨理工大学 | Temperature-variable multifunctional sample chamber |
| CN115122544A (en) * | 2021-03-26 | 2022-09-30 | 汉达精密电子(昆山)有限公司 | Cold and hot switched systems of mould |
| CN115594818A (en) * | 2022-10-29 | 2023-01-13 | 贵州航天天马机电科技有限公司（Cn） | Square frame type fragile cover and preparation method thereof |
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| CN202293114U (en) * | 2011-10-14 | 2012-07-04 | 苏州纬吉精机有限公司 | Hot oil circulating system of oil heater |
| CN202895646U (en) * | 2012-11-19 | 2013-04-24 | 东莞信易电热机械有限公司 | Flow type oil mould temperature controller |
| CN205997302U (en) * | 2016-08-04 | 2017-03-08 | 江苏文光模具技术有限公司 | A kind of temperature varied cyclical system of injection mold |
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| JP2006334932A (en) * | 2005-06-02 | 2006-12-14 | Canon Inc | Injection molding method and production system using the method |
| CN101890791A (en) * | 2010-07-20 | 2010-11-24 | 江苏文光车辆附件有限公司 | Variable-temperature injection mould circulating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435193A (en) * | 2018-12-07 | 2019-03-08 | 深圳市飞荣达科技股份有限公司 | A kind of PCB production mould |
| CN111537854A (en) * | 2020-05-14 | 2020-08-14 | 哈尔滨理工大学 | Temperature-variable multifunctional sample chamber |
| CN115122544A (en) * | 2021-03-26 | 2022-09-30 | 汉达精密电子(昆山)有限公司 | Cold and hot switched systems of mould |
| CN115594818A (en) * | 2022-10-29 | 2023-01-13 | 贵州航天天马机电科技有限公司（Cn） | Square frame type fragile cover and preparation method thereof |
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Application publication date: 20161109 |
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