CN108556291A - A kind of cooling means of injection mold - Google Patents
A kind of cooling means of injection mold Download PDFInfo
- Publication number
- CN108556291A CN108556291A CN201810260651.2A CN201810260651A CN108556291A CN 108556291 A CN108556291 A CN 108556291A CN 201810260651 A CN201810260651 A CN 201810260651A CN 108556291 A CN108556291 A CN 108556291A
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- China
- Prior art keywords
- cooling
- outlet temperature
- branch
- average value
- injection mold
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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
- B29C45/72—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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of cooling means of injection mold, method includes：After high-temperature water in injection mold is introduced heat exchanger progress heat exchange, the main water pipeline that cooling water returns to injection mold is generated after inputting cooling tower cooler；Inlet temperature sensor and outlet temperature sensor acquire the inlet temperature numerical value for cooling down branch and outlet temperature numerical value and are sent to controller in real time respectively；Controller calculates separately entrance temperature averages, outlet temperature average value according to inlet temperature numerical value and outlet temperature numerical value, dynamic regulation is carried out to cooling water flow according to result of calculation, until the outlet temperature numerical value of each cooling branch is consistent, and the difference of outlet temperature average value and inlet temperature average value is less than or equal to preset value.The present invention can be identical by adjusting the outlet temperature numerical value of each branch, realizes uniformly cooling, improves the product yield of moulding, the cooling water circulation in injection mold is used, save production cost, improves production efficiency.
Description
Technical field
The present invention relates to injection mold technology more particularly to a kind of cooling means of injection mold.
Background technology
Injection mold is a kind of tool producing plasthetics, is also to confer to plasthetics complete structure and accurate dimension
Tool, injection molding are to produce a kind of processing method used when certain complex-shaped components in batches, refer specifically to heated thawing
Material injects die cavity by high pressure, after cooling and solidifying, obtains formed products.
Although the structure of mold is due to the performance of plastics variety, the type of the shape of plastic products and structure and injector
May be ever-changing Deng different, but basic structure is consistent, mold is mainly by running gate system, high-temperature systems, molding zero
Part and constitutional detail composition, wherein running gate system and forming part be in direct contact part with plastics, and with plastics and product and
Variation is most complicated in plastics, and variation is maximum, it is desirable that finish and the highest part of precision.Injection mold is by dynamic model and cover half
Two parts form, and dynamic model is mounted on the moving die plate of injection (mo(u)lding) machine, and cover half is mounted on the fixed form of injection (mo(u)lding) machine.
In injection moulding, dynamic model is closed with cover half constitutes running gate system and cavity, and on-mode dynamic model and cover half detach to take out plastics
Product.In order to reduce heavy mold design and manufacturing effort, injection mould mostly uses greatly standard die set.
Injection mold needs cooling down operation in injection moulding process, but in the prior art, the cooling of injection mold is often uneven
It is even, it is be easy to cause scrapping for mold, while causing occur a problem that bubble, shrink inside moulding, or even can cause to note
Fracture, the flexural deformation of plastic.
Therefore, the existing technology needs to be improved and developed.
Invention content
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of cooling means of injection mold, purports
It is often uneven in the cooling for solving injection mold in the prior art, while the technical issues of influence the product quality of moulding.
A kind of embodiment of the present invention provides a kind of cooling means of injection mold, wherein the injection mold includes
Heat exchanger, inlet temperature sensor, outlet temperature sensor, cooling water pipeline, master control valve and controller, cooling water pipeline
Including main water pipeline, at least one cooling branch, the cooling leg parallel is arranged, one end connects main water pipeline,
The other end connects the water outlet of primary flow pipe road, main water pipeline connection cooling tower, primary flow pipe road connection heat
The water inlet pipe of interchanger, method include：
After high-temperature water in injection mold is introduced heat exchanger progress heat exchange, cooling is generated after inputting cooling tower cooler
Water returns to the main water pipeline of injection mold；
Inlet temperature sensor acquires the corresponding inlet temperature numerical value of cooling water of cooling branch entrance and is sent in real time
Controller；
Outlet temperature sensor is concurrent by the corresponding outlet temperature numerical value of cooling water for collecting cooling branch way outlet in real time
It send to controller；
Controller calculates separately entrance temperature averages, outlet temperature according to inlet temperature numerical value and outlet temperature numerical value
Average value, and according to entrance temperature averages, outlet temperature average value to flowing through the cooling water flow of master control valve into action
State is adjusted, until the outlet temperature numerical value of each cooling branch is consistent, and the difference of outlet temperature average value and inlet temperature average value
Less than or equal to preset value.
Optionally, described according to calculating inlet temperature average value, outlet temperature average value to flowing through the cooling of master control valve
Water flow carries out dynamic regulation, including：
The difference of inlet temperature average value and outlet temperature average value is compared with preset value；
If the difference of inlet temperature average value and outlet temperature average value is more than preset value, improved according to the percentage exceeded
The supply of cooling water, while the opening degree of master control valve is adjusted to change cooling water flow.
Optionally, it is described according to entrance temperature averages, outlet temperature average value to flowing through the cooling water of master control valve
Flow carries out dynamic regulation：
According to entrance temperature averages, outlet temperature average value to flowing through the cooling water flow of each cooling branch into action
State is adjusted.
Optionally, the cooling water branch road is provided with branch road control valve, and the branch road control valve is located at cooling branch
Arrival end.
Optionally, it is described according to entrance temperature averages, outlet temperature average value to flowing through the cooling of each cooling branch
Water flow carries out dynamic regulation, including：
Outlet temperature average value is compared with the outlet temperature of each cooling branch；
It is automatic to adjust if outlet temperature average value and the difference of the outlet temperature of each cooling branch are more than outlet temperature limit value
The branch road control valve of corresponding cooling branch is saved, the corresponding aperture for increasing branch road control valve increases the cold of corresponding cooling branch
But water flow；
If outlet temperature average value and the difference of the outlet temperature of each cooling branch are less than outlet temperature limit value, accordingly
The aperture for reducing the branch road control valve of corresponding cooling branch, reduces the cooling water flow of corresponding cooling branch.
Optionally, the inlet temperature sensor is arranged between the branch road control valve and the injection mold, described
Outlet temperature sensor is arranged in the outlet end of the cooling branch.
Optionally, the water outlet of the water inlet connection injection mold of the heat exchanger, the water outlet connection of heat exchanger
The water inlet of cooling tower.
Optionally, the cooling branch is that cross-section is round.
A kind of cooling means of injection mold provided by the present invention can pass through the outlet temperature numerical value of each branch of adjusting
It is identical, it realizes uniformly cooling, improves the product yield of moulding, the cooling water circulation in injection mold is used, save life
Cost is produced, production efficiency is improved.
Description of the drawings
Fig. 1 is the structural representation of the preferred embodiment of the injection mold in the cooling means of injection mold of the present invention
Figure.
Fig. 2 is the flow chart of the cooling means preferred embodiment of injection mold of the present invention.
Specific implementation mode
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, below to the present invention further specifically
It is bright.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to FIG. 1, its hardware for the injection mold of the cooling means preferred embodiment of injection mold of the present invention
Structure chart.As shown in Figure 1, injection mold includes heat exchanger, inlet temperature sensor, outlet temperature sensor, cooling water pipe
Road, master control valve and controller, cooling water pipeline include main water pipeline, at least one cooling branch, each cooling leg parallel
It is arranged, the water outlet of one end connection main water pipeline, other end connection primary flow pipe road, main water pipeline connection cooling tower,
Primary flow pipe road connects the water inlet pipe of heat exchanger.Controller is connect with master control valve, the inflow for controlling cooling water.Also with
Inlet temperature sensor, outlet temperature sensor connection, inlet temperature sensor are used to obtain the entrance temperature of cooling branch entrance
Number of degrees value, outlet temperature sensor are used to obtain the outlet temperature numerical value of cooling branch way outlet.Controller is for obtaining entrance temperature
Number of degrees value and outlet temperature numerical value, and calculate.
Cooling water branch road is provided with branch road control valve, and branch road control valve is located at the arrival end of cooling branch.Branch controls
The cooling water flow of branch road can be adjusted in valve.Further, inlet temperature sensor setting is in branch road control valve and note
Between mould, outlet temperature sensor is arranged in the outlet end of cooling branch.
Optionally, the water outlet of the water inlet connection injection mold of heat exchanger, the water outlet connection cooling of heat exchanger
The water inlet of tower has saved production cost to which water resource can be recycled.
Optionally, cooling branch is that cross-section is round.To the flow velocity conducive to raising cooling water.
In conjunction with above structure, the present invention also provides the flow chart of the cooling means preferred embodiment of the injection mold,
As shown in Fig. 2, method includes：
Step S100, after the high-temperature water in injection mold being introduced heat exchanger progress heat exchange, cooling tower cooler is inputted
The main water pipeline that cooling water returns to injection mold is generated afterwards；
Step S200, inlet temperature sensor acquires the corresponding inlet temperature numerical value of cooling water of cooling branch entrance in real time
And it is sent to controller；
Step S300, outlet temperature sensor will collect the corresponding outlet temperature of cooling water of cooling branch way outlet in real time
Numerical value is simultaneously sent to controller；
Step S400, controller calculates separately entrance temperature-averaging according to inlet temperature numerical value and outlet temperature numerical value
Value, outlet temperature average value, and according to entrance temperature averages, outlet temperature average value to flowing through the cooling water of master control valve
Flow carries out dynamic regulation, until the outlet temperature numerical value of each cooling branch is consistent, and outlet temperature average value and inlet temperature
The difference of average value is less than or equal to preset value.
When it is implemented, the high-temperature water in the embodiment of the present invention refers to the water to heat up after supercooling branch.By high-temperature water
After introducing heat exchanger progress heat exchange by mainstream waterpipe, cooling tower is inputted, cooling tower is cold to being generated after high temperature water process
But water, cooling water flow through master control valve by main water pipeline, and for master control valve under controller action, cooling water enters cooling branch
Road.
Inlet temperature sensor and outlet temperature sensor acquire the inlet temperature numerical value and outlet temperature of cooling branch respectively
Number of degrees value, and it is sent to controller, controller goes out each cold according to the inlet temperature numerical computations of each cooling branch of acquisition
But the inlet temperature average value of branch goes out each cooling branch according to the outlet temperature numerical computations of each cooling branch of acquisition
Outlet temperature average value, according to entrance temperature averages, outlet temperature average value to flowing through the cooling flow of master control valve
Amount carries out dynamic regulation, and until the outlet temperature numerical value of each cooling branch is consistent, and outlet temperature average value and inlet temperature are flat
The difference of mean value is less than or equal to preset value.Wherein preset value refers to that moulding will be through the required temperature difference limit value of supercooling.
Optionally, according to calculating inlet temperature average value, outlet temperature average value to flowing through the cooling flow of master control valve
Amount carries out dynamic regulation, including：
The difference of inlet temperature average value and outlet temperature average value is compared with preset value；
If the difference of inlet temperature average value and outlet temperature average value is more than preset value, improved according to the percentage exceeded
The supply of cooling water, while the opening degree of master control valve is adjusted to change cooling water flow.
Specifically, when the difference of inlet temperature average value and outlet temperature average value is more than preset value, then specification is currently cold
But the supply of water is few, and cool down unobvious, therefore improves the supply of cooling water, real by adjusting the opening degree of master control valve
Now increase the supply of cooling water.
Optionally, according to entrance temperature averages, outlet temperature average value to flowing through the cooling water flow of master control valve
Dynamic regulation is carried out, further includes：
According to entrance temperature averages, outlet temperature average value to flowing through the cooling water flow of each cooling branch into action
State is adjusted.
Further, according to entrance temperature averages, outlet temperature average value to flowing through the cooling water of each cooling branch
Flow carries out dynamic regulation, including：
Outlet temperature average value is compared with the outlet temperature of each cooling branch；
It is automatic to adjust if outlet temperature average value and the difference of the outlet temperature of each cooling branch are more than outlet temperature limit value
The branch road control valve of corresponding cooling branch is saved, the corresponding aperture for increasing branch road control valve increases the cold of corresponding cooling branch
But water flow；
If outlet temperature average value and the difference of the outlet temperature of each cooling branch are less than outlet temperature limit value, accordingly
The aperture for reducing the branch road control valve of corresponding cooling branch, reduces the cooling water flow of corresponding cooling branch.
When it is implemented, according to the aperture for adjusting each branch road control valve, be adjusted enter each branch road control valve into
Water, the outlet temperature difference for adjusting cooling branch is identical, then can ensure uniformly to be cooled down in each branch.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect range.
Claims (8)
1. a kind of cooling means of injection mold, which is characterized in that the injection mold includes heat exchanger, inlet temperature sensing
Device, outlet temperature sensor, cooling water pipeline, master control valve and controller, cooling water pipeline include main water pipeline, at least one
Item cools down branch, cooling leg parallel setting, one end connect main water pipeline, the other end connects primary flow pipe road,
The water outlet of the main water pipeline connection cooling tower, the primary flow pipe road connects the water inlet pipe of heat exchanger, cooling side
Method includes:
After high-temperature water in injection mold is introduced heat exchanger progress heat exchange, generation cooling water returns after inputting cooling tower cooler
The main water pipeline of re-injection mould；
Inlet temperature sensor acquires the corresponding inlet temperature numerical value of cooling water of cooling branch entrance and is sent to control in real time
Device；
Outlet temperature sensor is by the corresponding outlet temperature numerical value of the cooling water for collecting cooling branch way outlet in real time and is sent to
Controller；
It is average that controller according to inlet temperature numerical value and outlet temperature numerical value calculates separately entrance temperature averages, outlet temperature
Value, and according to entrance temperature averages, outlet temperature average value to flowing through the cooling water flow of master control valve into Mobile state tune
Section, until the outlet temperature numerical value of each cooling branch is consistent, and the difference of outlet temperature average value and inlet temperature average value is less than
Equal to preset value.
2. the cooling means of injection mold according to claim 1, which is characterized in that described average according to inlet temperature is calculated
Value, outlet temperature average value carry out dynamic regulation to the cooling water flow for flowing through master control valve, including：
The difference of inlet temperature average value and outlet temperature average value is compared with preset value；
If the difference of inlet temperature average value and outlet temperature average value is more than preset value, cooling is improved according to the percentage exceeded
The supply of water, while the opening degree of master control valve is adjusted to change cooling water flow.
3. the cooling means of injection mold according to claim 1, which is characterized in that described according to entrance temperature-averaging
Value, outlet temperature average value carry out dynamic regulation to the cooling water flow for flowing through master control valve and further include：
According to entrance temperature averages, outlet temperature average value to flowing through the cooling water flow of each cooling branch into Mobile state tune
Section.
4. the cooling means of injection mold according to claim 3, which is characterized in that the cooling water branch road is provided with branch
Road control valve, the branch road control valve are located at the arrival end of cooling branch.
5. the cooling means of injection mold according to claim 4, which is characterized in that described according to entrance temperature-averaging
Value, outlet temperature average value carry out dynamic regulation to the cooling water flow for flowing through each cooling branch, including：
Outlet temperature average value is compared with the outlet temperature of each cooling branch；
If outlet temperature average value and the difference of the outlet temperature of each cooling branch are more than outlet temperature limit value, automatic adjustment pair
The branch road control valve for the cooling branch answered, the corresponding aperture for increasing branch road control valve, increases the cooling water of corresponding cooling branch
Flow；
It is corresponding to reduce if outlet temperature average value and the difference of the outlet temperature of each cooling branch are less than outlet temperature limit value
The aperture of the branch road control valve of corresponding cooling branch, reduces the cooling water flow of corresponding cooling branch.
6. the cooling means of injection mold according to claim 5, which is characterized in that the inlet temperature sensor setting exists
Between the branch road control valve and the injection mold, the outlet temperature sensor is arranged in the outlet of the cooling branch
End.
7. the cooling means of injection mold according to claim 6, which is characterized in that the water inlet of the heat exchanger connects
The water outlet of injection mold, the water inlet of the water outlet connection cooling tower of heat exchanger.
8. according to the cooling means of any one of the claim 1-7 injection molds, which is characterized in that the cooling branch be etc.
Section circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810260651.2A CN108556291A (en) | 2018-03-27 | 2018-03-27 | A kind of cooling means of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810260651.2A CN108556291A (en) | 2018-03-27 | 2018-03-27 | A kind of cooling means of injection mold |
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| Publication Number | Publication Date |
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| CN108556291A true CN108556291A (en) | 2018-09-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810260651.2A Pending CN108556291A (en) | 2018-03-27 | 2018-03-27 | A kind of cooling means of injection mold |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864977A (en) * | 2021-09-30 | 2021-12-31 | 珠海格力电器股份有限公司 | Cooling system, temperature control method and device thereof, equipment and air conditioning system |
| CN114211713A (en) * | 2021-12-27 | 2022-03-22 | 南京星德机械有限公司 | Water type mold temperature controller and water pressure control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302826A (en) * | 2012-03-15 | 2013-09-18 | 曼盛包装（上海）有限公司 | Cooling method of circulating water for injection mold |
| CN105172079A (en) * | 2015-09-28 | 2015-12-23 | 上海交通大学 | Cooling circulation system for injection mold and control method of cooling circulation system |
-
2018
- 2018-03-27 CN CN201810260651.2A patent/CN108556291A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302826A (en) * | 2012-03-15 | 2013-09-18 | 曼盛包装（上海）有限公司 | Cooling method of circulating water for injection mold |
| CN105172079A (en) * | 2015-09-28 | 2015-12-23 | 上海交通大学 | Cooling circulation system for injection mold and control method of cooling circulation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864977A (en) * | 2021-09-30 | 2021-12-31 | 珠海格力电器股份有限公司 | Cooling system, temperature control method and device thereof, equipment and air conditioning system |
| CN114211713A (en) * | 2021-12-27 | 2022-03-22 | 南京星德机械有限公司 | Water type mold temperature controller and water pressure control method thereof |
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Application publication date: 20180921 |
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| RJ01 | Rejection of invention patent application after publication |