CN109571893A - A kind of diversion mechanism, quick method for heating and controlling and mold heating system - Google Patents
A kind of diversion mechanism, quick method for heating and controlling and mold heating system Download PDFInfo
- Publication number
- CN109571893A CN109571893A CN201810918733.1A CN201810918733A CN109571893A CN 109571893 A CN109571893 A CN 109571893A CN 201810918733 A CN201810918733 A CN 201810918733A CN 109571893 A CN109571893 A CN 109571893A
- Authority
- CN
- China
- Prior art keywords
- heating
- mold
- flow
- fluid
- temperature
- Prior art date
- 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.)
- Pending
Links
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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- 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
- B29C45/7306—Control circuits therefor
-
- 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
- B29C2045/7343—Heating or cooling of the mould heating or cooling different mould parts at different temperatures
-
- 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
- B29C2945/76929—Controlling method
- B29C2945/76973—By counting
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of diversion mechanism, quick method for heating and controlling and mold heating systems.Diversion mechanism includes at least one fluid inlet, multiple fluid outlets, and multiple first flow regulating valves of control fluid outlet flow corresponding with fluid outlet.Mold heating system includes high temperature fluid source, diversion mechanism, mold and according to die size, modular construction and raw material thermal physical property parameter, and the controller of process matching is carried out to shunt conduit quantity, flow and the make-and-break time in diversion mechanism.Diversion mechanism flow resistance is small, each fluid outlet can be controlled separately.Mold partition heating, to meet the needs of modular construction, die size and property of raw material, different heating region is provided with different regional aim temperature, reach different regional aim temperature by the flow control of each hot flow path to heating region, keep computer heating control more accurate, improves the efficiency and product quality of mold heating.
Description
Technical field
The present invention relates to injection molding fields, more particularly to a kind of diversion mechanism, quick method for heating and controlling and mold
Heating system.
Background technique
For the heating process of injection mold, existing heating process and mold design are not able to satisfy increasing note
Molding product quality requirement, the injecting products of especially high light.Existing heating method heating speed is slower, and temperature controls
Inaccuracy.Each region heating of module is uneven, leads to unstable product quality.
In the prior art, the Chinese patent of Publication No. CN203854183U discloses steam pipework integrated form bloom note
Mould, including the steam pipework heated for being passed through high-temperature steam to mold, it is characterised in that: the steam pipework
Including be arranged in mold into vapour main line, go out vapour main line and a plurality of distribution pipeline, the import of a plurality of distribution pipeline
It holds described in being connected into vapour main line, outlet end is connected to the vapour main line out, described into vapour main line and the vapour master out
Pipeline is located at the diagonal position of the mold, it is described into vapour main line, go out the main vapour of steam outside vapour main line connecting mold
Source.The patent is incited somebody to action by being arranged in mould inside into vapour main line, going out vapour main line for being connected to each distribution pipeline in mold
Mould inside distribution pipeline is integrated, and easy to connect, high-efficient, connector is few, and connection reliability is high, and it is existing to be not likely to produce leakage vapour
As improving heating efficiency.But it the flow of single access in the distribution pipeline of the patent, is passed through steaming time and cannot adjust
Section can not select runner, and flow can not be accurate adjustable, be not able to satisfy the injection molding requirement of high-precision and high quality, can not achieve mould
Has partition heating, and distribution pipeline follows mold to process, and does not adapt to different injection raw material and module.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, a kind of shunting is especially innovatively proposed
Mechanism, quick method for heating and controlling and mold heating system.
In order to realize above-mentioned purpose of the invention, according to the first aspect of the invention, the present invention provides a kind of shuntings
Mechanism, including at least one fluid inlet, multiple fluid outlets, and control fluid outlet corresponding with the fluid outlet
Multiple first flow regulating valves of flow.
Above-mentioned technical proposal has the beneficial effect that the diversion mechanism is small with flow resistance, radiation loss is small and each branch
The uniform characteristic of flow velocity, and can close or open any fluid outlet according to use demand and adjust flow, have general
Property, it is not limited by mold and modular construction.
In the preferred embodiment of the present invention, further include magnetic part for fixing the diversion mechanism.
Above-mentioned technical proposal have the beneficial effect that diversion mechanism by magnetic part carry out it is magnetic-type installation, it can be achieved that and its
The complete fitting of his mechanism (such as mold), it is easy to operate without complicated bindiny mechanism.
It in the preferred embodiment of the present invention, further include wrapping up diversion mechanism all or part outer surface
Thermal insulation material.
Having the beneficial effect that for above-mentioned technical proposal can reduce air heat dissipation capacity by thermal insulation material, reduce diversion mechanism
The hot-fluid loss of internal fluid.
In order to realize above-mentioned purpose of the invention, according to the second aspect of the invention, the present invention provides a kind of molds
Quick method for heating and controlling, comprising:
S1 obtains a plurality of heating of mold in conjunction with die size, modular construction, raw material thermal physical property parameter and Shooting Technique
Curve obtains multiple target heating durations and its corresponding multiple target temperatures；
S2, according to die size, two or more are arranged on mold and adds for modular construction or raw material thermal physical property parameter
Thermal region is that the heating flow channel in heating region distributes fluid outlet；
S3, the hot physical property ginseng of cavity structure, the raw material that position, heating region in conjunction with where heating region on mold include
Number matching heating curves, and regional aim temperature is obtained based on the heating curves；
S4, flow of the controller based on high temperature fluid in heating flow channel in regional aim temperature control heating region；
S5, unlatching and/or shutdown of the controller based on the time parameter control first flow regulating valve on heating curves.
Above-mentioned technical proposal has the beneficial effect that meet the needs of modular construction, die size and property of raw material,
By mold partition heating, different heating region is provided with different regional aim temperature, to each hot flow path stream of heating region
Amount individually control, keeps computer heating control more accurate, quickly heats, and improves the efficiency and product quality of mold heating, and entire mould
Tool can be rapidly achieved target temperature.Avoiding flow in conventional flow field heating method can not change, and be unable to the heating of specific aim region
And the problem that heating speed is slower.
In the preferred embodiment of the present invention, in the S2, two or more heating are set on mold
The method in region are as follows:
According to the distance away from mold pouring slot, it is divided into different heating regions；
And/or the wall thickness grade according to modular construction, it is divided into different heating regions；
And/or according to flow resistance different in mold cavity, it is divided into different heating regions.
Having the beneficial effect that for above-mentioned technical proposal discloses the method and regional aim temperature setting of heating region division
Method, method is reasonable, have versatility.
In the preferred embodiment of the present invention, the calculating of the high temperature fluid flow q of heating flow channel is public in the S4
Formula are as follows:
Wherein, Ga is grashof number；D is the diameter of section of heating flow channel；Q is high temperature fluid flow；ρ is that fluid is close
Degree；λ is flow thermal conductivity coefficient；A1For heating flow channel area of section；η is the thickness of liquid film of fluid；A is heating flow channel inner wall table
Area；ToFor heating flow channel outlet temperature；TiFor heating flow channel inlet temperature；Prs is tube fluid Prandtl number；Prw is heating stream
The wall surface Prandtl number in road；ρ ' is mold materials density；V is Effective heating volume of the heating flow channel on mold；CpFor mold
Material specific heat capacity；T1The regional aim temperature of heating region where heating flow channel；T0The heating region where heating flow channel
Initial temperature.
Having the beneficial effect that for above-mentioned technical proposal is disclosed according to regional aim temperature setting acquisition heating flow channel high temperature
The calculation formula of fluid flow.
It in the preferred embodiment of the present invention, further include controller according to the temperature sensing being arranged on mold
The temperature information of device feedback is adjusted in each heating region in heating flow channel the step of the flow of high temperature fluid.
Above-mentioned technical proposal has the beneficial effect that the real time temperature fed back according to each heating region, adjusts each heating flow channel
Flow, realize quick, the uniform and accurate heating process of high bright injecting products.
In order to realize above-mentioned purpose of the invention, according to the third aspect of the present invention, the present invention provides a kind of molds
Heating system, including high temperature fluid source, by the high temperature fluid source export high temperature fluid be divided at least all the way as right is wanted
It seeks diversion mechanism described in one of 1-3, offer the mold of at least one heating flow channel and according to one of claim 4-7
The quick method for heating and controlling is according to die size, modular construction and raw material thermal physical property parameter, to the diversion mechanism
The on-off and flow of fluid outlet carry out the controller of process matching；
One heating flow channel and a fluid outlet pass through piping connection；
The high temperature fluid control terminal of controller is electrically connected with the switch terminals in high temperature fluid source, the first valve control of controller
End processed is electrically connected with the control terminal of first flow regulating valve.
The architectural characteristic and difference of above-mentioned technical proposal having the beneficial effect that for different molds, different injection molding modules
Raw material, give heating flow channel to distribute fluid outlet, in conjunction with the on-off and flow of each fluid outlet of control process,
It realizes the process optimization that different molds quickly heat, improve heating efficiency and shortens the process-cycle, pass through reasonable disposition stream
Quantity, throughput time and the flow of body outlet adapt to the demand for heat of different injection raw materials, module and mold, have logical
The property used.
It in the preferred embodiment of the present invention, further include that at least one temperature being arranged on the mold passes
Sensor, the output end of the temperature sensor are electrically connected with the temperature input of controller.
Above-mentioned technical proposal has the beneficial effect that using mold temperature as heating feedback signal, each stream easy to adjustment in time
On-off, the flow of body outlet, and cutting high temperature fluid source, can accurately control heating process, improve the accurate of heating
Property, promote the quality of moulding.
It in the preferred embodiment of the present invention, further include the second flow tune being arranged at the fluid inlet
Valve is saved, the second valve control terminal of controller is electrically connected with the control terminal of second flow regulating valve.
The having the beneficial effect that of above-mentioned technical proposal can be opened or closed diversion mechanism work, can also further to point
The fluid total volume that is passed through of stream mechanism is regulated and controled.
Detailed description of the invention
Fig. 1 is the front view of diversion mechanism in the embodiment of the invention；
Fig. 2 is the rearview of diversion mechanism in the embodiment of the invention；
Fig. 3 is the system block diagram of mold heating system in the embodiment of the invention；
Fig. 4 is die heating zone distribution schematic diagram in the embodiment of the invention；
Fig. 5 is that heating curves corrects flow chart in the embodiment of the invention.
Appended drawing reference:
1 fluid inlet；2 fluid outlets；3 first flow regulating valves；4 magnetic parts；5 second flow regulating valves；6 temperature pass
Sensor；7 high temperature fluid sources；8 controllers；9 molds；91 heating regions one；92 heating regions two；93 heating regions three；10 heating
Runner；11 module type chambers；12 pouring slots.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to
The embodiment of attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, Ke Yigen
The concrete meaning of above-mentioned term is understood according to concrete condition.The invention discloses a kind of diversion mechanism, which includes at least
One fluid inlet 1, multiple fluid outlets 2, and it is corresponding with fluid outlet 2 control 2 flow of fluid outlet multiple first
Flow control valve 3.
In the present embodiment, Fig. 1 discloses a kind of structure type of the diversion mechanism.Fluid outlet 2 can uniformly or not
It is laid in the surrounding of fluid inlet 1.For the Fluid pressure for increasing fluid outlet 2, fluid inlet 1 can be set greater than 1
It is a, such as two.First flow regulating valve 3 can be manual switch valve or electromagnetism than column control valve.Diversion mechanism is preferably heat-resisting
The good material of performance is made, such as rigid.
In the preferred embodiment of the present invention, as shown in Fig. 2, further including the magnetism for fixing diversion mechanism
Part 4.
In the present embodiment, magnetic part 4 can be one or more thin slice magnet or cylinder with strong magnetic force property
Shape magnet, can open up on diversion mechanism either end facet can pass through bonding with the matched groove of the shape of magnetic part 4, magnetic part 4
Or the modes such as interference fit are fixedly connected with groove.
It in the preferred embodiment of the present invention, further include the guarantor for wrapping up diversion mechanism all or part outer surface
Adiabator.
In the present embodiment, the low material of thermal insulation material selection heat transfer property, such as foamed material.
The invention also discloses a kind of quick method for heating and controlling based on above-mentioned 9 heating system of mold, comprising:
S1 obtains a plurality of of mold 9 in conjunction with 9 size of mold, modular construction, raw material thermal physical property parameter and Shooting Technique and adds
Heating curve obtains multiple target heating durations and its corresponding multiple target temperatures；
S2, according to 9 size of mold, two or more are arranged on mold 9 in modular construction or raw material thermal physical property parameter
Heating region is that the heating flow channel 10 in heating region distributes fluid outlet；
S3, the hot physical property ginseng of cavity structure, the raw material that position, heating region in conjunction with where heating region on mold 9 include
Number matching heating curves, and regional aim temperature is obtained based on the heating curves；
S4, controller control in corresponding heating region high temperature fluid in heating flow channel 10 based on regional aim temperature
Flow；
S5, unlatching and/or shutdown of the controller based on the time parameter control first flow regulating valve on heating curves.
In the present embodiment, injection molding process is broadly divided into molding, injection, pressure maintaining, cooling, die sinking, product take
Six stages out before material injecting mould 9 in the molten state, need to heat on mold 9, and raw material injection is finished in mold 9
It is middle need to cured or sulfidation, then demoulding while hot.In technique, there are a heating curves, the heating to the heating of mold 9
The horizontal axis of curve is time (unit can be the second), and ordinate represents the temperature of mold 9, there is a target temperature on heating curves,
After mold 9 reaches target temperature, heating system allows mold 9 to keep target temperature for a period of time (unit can be the second), Zhi Houzai
It is cooled down, which can be molded steam heating method in production according to this field and obtain, for theoretical heating
Curve.
In the present embodiment, different 9 sizes of mold, modular construction, raw material thermal physical property parameter have shadow to heating process
It rings, theoretical heating curves is not able to satisfy actual needs, needs according to corresponding amendment is done on theoretical heating curves, therefore, can base
In theoretical heating curves obtain a plurality of 9 size of combination mold, modular construction, raw material thermal physical property parameter heating curves.
The size of mold 9 has an impact to heating process, and such as large scale mold 9, distal line is longer, fluid resistance and
Radiation loss all significantly increases, and heating effect is deteriorated, therefore the distance on mold 9 apart from pouring slot 12 is different, the mesh needed
It is just different to mark temperature, sets the mesh on theoretical curve for the target temperature of 12 place mold of pouring slot, 9 part and heating duration
Mark temperature and heating duration, by away from being calculated at a distance from pouring slot 12, the target temperature that needs and heat duration to apart from related
Property (preferred, linearly increasing convenient for being calculated as) increase.
Modular construction difference needs target temperature different, such as bending, ladder labyrinth are than simple structures such as cuboids
Higher target temperature and heating duration are needed, when needing higher target temperature and heating than wall thickness place such as the thin place of Modular wall
Long, to avoid because raw material molten mass and wall surface temperature are there are the larger temperature difference, heat is quickly transmitted in 9 body of mold, is melted herein
The problem of body viscosity increases sharply, is unfavorable for subsequent flowing, the generally target temperature by modular construction simply and at module wall thickness
It is set as target temperature on theoretical heating curves and heating duration with heating duration, the target at structure is complicated place and the thin place of wall
Temperature and heating duration increase on theoretical heating curves according to test of many times result.
The thermal physical property parameter of different material is different, and thermal physical property parameter is material viscosity-temperature relation, when the viscosity-of raw material
When temperature is weak related, the target temperature and heating duration of mold can be set to the target temperature in theoretical heating curves and add
Hot duration needs to increase target temperature and heating on the basis of theoretical heating curves when the viscosity versus temperature strong correlation of raw material
Duration, the specific numerical value that increases can be obtained according to test of many times result.
9 size of mold, modular construction, any one in raw material thermal physical property parameter or both or three exist simultaneously needs
When revised theory heating curves, the correction amount (i.e. target temperature incrementss and heating duration incrementss) of each should be folded
Add, it is preferred that be linear superposition, a plurality of heating curves available in this way.
In the present embodiment, according to different 9 size ranges of mold, modular construction, raw material thermal physical property parameter, by mould
9 points of tool are different heating regions, include at least one heating flow channel 10 inside each heating region, and by each heating zone
The heating flow channel 10 in domain corresponds pipeline with the fluid outlet 2 in diversion mechanism and connect, and the quantity of fluid outlet 2 is preferably big
In be equal to 10 quantity of heating flow channel, pipeline periphery can covering insulation material, to reduce radiation loss.
Preferably, the method for two or more heating regions is set on mold 9 are as follows:
According to the distance away from 9 pouring slot 12 of mold, it is divided into different heating regions；
And/or the wall thickness grade according to modular construction, it is divided into different heating regions；
And/or according to the intracavitary different flow resistance of 9 type of mold, it is divided into different heating regions.
In the present embodiment, for the mold 9 of large scale module or thin wall module, subregion setting is even more important.
For large scale module, it can be divided into different heating regions according to the distance away from 9 pouring slot 12 of mold, such as be divided into three
Heating region, respectively proximal end heating region, middle-end heating region and distal end heating region.The region mesh of each heating region
It is different with target heating duration to mark temperature, it, can be by it if distal end heating region is to resist scattering losses and fluid impedance loss
Regional aim temperature setting is higher than target temperature, and the flow for being passed through fluid increases.
In the present embodiment, heating region division, module wall thickness regions and Modular wall are carried out according to module wall thickness grade
Thin region is separately heated, to avoid in the quickly easily caused injection molding quality decline of solidification of the thin region raw material solution of Modular wall.
In the present embodiment, raw material solution is in the intracavitary flow passage resistance force of waterproof of 9 type of mold by raw material itself, module wall thickness, mould
The structure features such as part shape influence, as the flow resistance of modular construction complex region is greater than modular construction region, module wall thickness area
The flow resistance in domain is less than the thin region of Modular wall；For flow resistance large area compared to flow resistance smaller area, heating
Target temperature higher should answer longer with heating duration.
In the present embodiment, after having divided heating region, according on mold 9 where the region position, included
Partly molding cavity structure, raw material thermal physical property parameter match heating curves, and different heating regions possesses different heating curves, and
Regional aim temperature and heating time parameter are obtained based on the heating curves, controller is passed through heating flow channel 10 by control
Flow (i.e. the aperture of first flow regulating valve 3) adjusts the temperature of 10 place heating region of heating flow channel, and controller passes through control
First flow regulating valve 3 processed opens or closes to match the time parameter on heating curves.
In a kind of application scenarios for dividing heating region in quick method for heating and controlling provided by the invention, such as Fig. 4 institute
Show, is divided into mold 9 in conjunction with the distance apart from pouring slot 12, the wall thickness of module type chamber 11, the flow passage resistance force of waterproof of raw material molten mass
Three heating regions, respectively heating region 1, heating region 2 92 and heating region 3 93 wrap in each heating region
Contain a heating flow channel 10.On the one hand, heating region 2 92 is nearest apart from pouring slot 12, followed by one 91 He of heating region
Heating region 3 93 does not consider that the regional aim temperature T2 of other factors heating region 2 92 should be lower than heating region 3 93
The target temperature T1 of target temperature T3 and heating region 1；On the other hand, it can be seen that and add from the structure of module type chamber 11
Modular wall is most thick in thermal region 2 92 and flow resistance is minimum, and Modular wall is most in heating region 1 and heating region 3 93
Thin and flow passage resistance force of waterproof is maximum, does not consider that the target temperature T2 of other factors heating region 2 92 should be lower than heating region 1
Target temperature T1 and heating region 3 93 target temperature T3；In conjunction with above-mentioned two aspect, by the target of heating region 2 92
Temperature T2 is set as 110 DEG C of the target temperature in theoretical heating curves, and heating duration is set as the heating in theoretical heating curves
The target temperature T3 of the target temperature T1 of heating region 1 and heating region 3 93 are disposed as 120 DEG C, are higher than by duration
The heating duration of the target temperature T2 of heating region 2 92, heating region 1 and heating region 3 93 is set greater than theory
Heating duration in heating curves.
In the present embodiment, different molds 9 and raw material, the diversion mechanism and method for heating and controlling can be fitted
With with versatility, the efficiency of raising injection molding production enables mold 9 to be quickly increased to target temperature from initial temperature.
In the preferred embodiment of the present invention, in S4 the high temperature fluid flow q of heating flow channel 10 calculation formula
Are as follows:
Wherein, Ga is grashof number, dimensionless group；D is the diameter of section of heating flow channel 10, unit m；Q is high temperature
Fluid flow；ρ is fluid density；λ is flow thermal conductivity coefficient, unit W/m2K；A1For 10 area of section of heating flow channel, unit m2；
ToFor 10 outlet temperature of heating flow channel, unit K；TiFor 10 inlet temperature of heating flow channel, unit K；Prs is tube fluid Prandtl number,
Dimensionless group；Prw is wall surface Prandtl number, dimensionless group；A is 10 inner wall surface area of heating flow channel, unit m2；η is stream
The thickness of liquid film of body, unit m；ρ ' is 9 density of material of mold, units/kg/m3；V is that heating flow channel 10 is effective on mold 9
Heat volume, unit m3；CpFor 9 material specific heat capacity of mold, unit kJ/kg.K；T1For the region of 10 region of heating flow channel
Target temperature, unit K；T0For the initial temperature of 10 region of heating flow channel, unit K.
In present embodiment, according to heat balance principle, the heat Q that the heating region of mold 9 obtains has with steam bring
Imitate heat QSteam heatingIt is equal, have:
QSteam heating=Q；
According to thermal convection principle, above-mentioned formula is derived, obtains following formula:
According to above formula, the flow ρ of runner can be acquired, further according to flow and valve opening relationship and valve opening with
The relationship (the product manual setting that can refer to the first flow regulating valve 3 of selection) of signal magnitude is controlled, the output of controller 8 is closed
Control terminal of the suitable control voltage to first flow regulating valve 3, controlling opening of valve, to adjust the height in heating flow channel 10
The flow of warm fluid.Preferably, a flow sensor can be set on each 2 place pipeline of fluid outlet, for detect with
The flow of high temperature fluid in the heating flow channel 10 of 2 piping connection of fluid outlet, controller 8 are fed back based on flow sensor
Flow information, to adjust the valve opening of first flow regulating valve 3, such flow control is more accurate.
In the present embodiment, V is Effective heating volume of the heating flow channel 10 on mold 9, is preferably but not limited to, should
10 place heating region of heating flow channel occupies the volume of mold 9 divided by the quantity of heating flow channel 10 in the heating region.
It in the preferred embodiment of the present invention, further include controller 8 according to the temperature sensing being arranged on mold
The temperature information that device 6 is fed back is adjusted in each heating region in heating flow channel 10 the step of the flow of high temperature fluid.
In the present embodiment, since the flow for obtaining heating flow channel 10 based on regional aim temperature is calculated value,
In practical heating process, because the various factors such as external environment heat dissipation, control error influence, actual flow or the heating region
Temperature be deviated with regional aim temperature, accordingly, it is preferred that being provided with temperature sensor 6 in each heating region, pass through
Temperature sensor 6 feeds back the actual temperature of heating region, and 3 valve opening of first flow regulating valve is adjusted in controller 8,
To make the temperature of heating region reach regional aim temperature.Preferably, controller can be by pid control algorithm, to first-class
The outflow flow of adjustable valve 3 is controlled.
The invention also discloses a kind of 9 heating systems of mold, as shown in figure 3, including high temperature fluid source 7, by high temperature fluid
The high temperature fluid that source 7 exports is divided into above-mentioned diversion mechanism at least all the way, offers at least one heating flow channel 10 mold 9,
And according to above-mentioned quick method for heating and controlling according to 9 size of mold, modular construction and raw material thermal physical property parameter, to the machine of shunting
The on-off and flow of fluid outlet 2 in structure carry out the controller 8 of process matching；
One heating flow channel 10 and a fluid outlet 2 pass through piping connection；
The high temperature fluid control terminal of controller 8 is electrically connected with the switch terminals in high temperature fluid source 7, the first valve of controller 8
Control terminal is electrically connected with the control terminal of first flow regulating valve 3.
In the present embodiment, high temperature fluid source 7 is preferably but not limited to as steam generator, and high temperature fluid is high-temperature water
Steam.Controller 8 is the single-chip microcontroller or MCU acquired with data operation ability and A/D.Preferably, controller 8 passes through certainly
The control terminal de-regulation first flow that oneself I/O interface or D/A pin exports electric signal to first flow regulating valve 3 is adjusted
The valve opening of valve 3, and then adjust the 10 high temperature stream of heating flow channel of the 3 place fluid outlet 2 of first flow regulating valve connection
Flow, the on-off of body.
In the present embodiment, for larger-size mold 9, apart from the farther away distal end of pouring slot 12 and distance compared with
Close proximal end, high temperature fluid reach temperature difference when distal end or proximal end；And temperature is heated for the different piece of thin wall moldings
Degree and heating duration have difference, as turning or thinner thickness means suitable heating time are longer；According to the hot physical property of raw material
Parameter, such as freezing point, fusing point, controller control distal end heating flow channel 10 on first flow regulating valve 3 valve opening compared with
Greatly, enlargement discharge is influenced, the turning of control module or first-class on thinner thickness part heating flow channel 10 with reducing heat dissipation
3 opening time of adjustable valve is required with meeting injection molding.
It in the preferred embodiment of the present invention, further include at least one temperature sensor being arranged on mold 9
6, the output end of temperature sensor 6 is electrically connected with the temperature input of controller 8.
In the present embodiment, it is preferred that temperature sensor 6 can be multiple, the different zones being distributed on mold 9.It can
Thermocouple temperature sensor is selected, the A/D pin on controller 7 is electrically connected with the output end of temperature sensor 6, to acquire temperature
Degree signal is simultaneously converted to digital signal, so as to the processing of controller 8.
It in the preferred embodiment of the present invention, further include the second flow regulating valve being arranged at fluid inlet 1
5, the second valve control terminal of controller 7 is electrically connected with the control terminal of second flow regulating valve 5.
In the present embodiment, second flow regulating valve 5 is preferably but not limited to as electromagnetism than column control valve, controller 7 from
Its I/O interface or D/A pin export the control terminal de-regulation second flow regulating valve 5 of electric signal to second flow regulating valve 5
Valve opening, and then adjust diversion mechanism fluid inlet 1 flow.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective,
The scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of diversion mechanism, which is characterized in that including at least one fluid inlet, selectable multiple fluid outlets, and
Multiple first flow regulating valves of control fluid outlet flow corresponding with the fluid outlet.
2. diversion mechanism as described in claim 1, which is characterized in that further include the magnetism for fixing the diversion mechanism
Part.
3. diversion mechanism as described in claim 1, which is characterized in that further include wrapping up outside the diversion mechanism all or part
The thermal insulation material on surface.
4. a kind of quick method for heating and controlling of mold characterized by comprising
S1 obtains a plurality of heating curves of mold in conjunction with die size, modular construction, raw material thermal physical property parameter and Shooting Technique,
Obtain multiple target heating durations and its corresponding multiple target temperatures；
S2, according to die size, two or more heating zones are arranged in modular construction or raw material thermal physical property parameter on mold
Domain is that the heating flow channel in heating region distributes fluid outlet；
S3, the cavity structure for including in conjunction with the position on the mold of heating region place, heating region, the matching of raw material thermal physical property parameter
Heating curves, and regional aim temperature is obtained based on the heating curves；
S4, flow of the controller based on high temperature fluid in heating flow channel in regional aim temperature control heating region；
S5, unlatching and/or shutdown of the controller based on the time parameter control first flow regulating valve on heating curves.
5. quick method for heating and controlling as claimed in claim 4, which is characterized in that in the S2, two are arranged on mold
Or the method for more than two heating regions are as follows:
According to the distance away from mold pouring slot, it is divided into different heating regions；
And/or the wall thickness grade according to modular construction, it is divided into different heating regions；
And/or according to flow resistance different in mold cavity, it is divided into different heating regions.
6. quick method for heating and controlling as claimed in claim 4, which is characterized in that the high temperature fluid of heating flow channel in the S4
The calculation formula of flow q are as follows:
Wherein, Ga is grashof number；D is the diameter of section of heating flow channel；Q is high temperature fluid flow；ρ is fluid density；λ is
Flow thermal conductivity coefficient；A1For heating flow channel area of section；η is the thickness of liquid film of fluid；A is heating flow channel inner wall surface area；ToFor
Heating flow channel outlet temperature；TiFor heating flow channel inlet temperature；Prs is tube fluid Prandtl number；Prw is that the wall surface of heating flow channel is general
Lang Te number；ρ ' is mold materials density；V is Effective heating volume of the heating flow channel on mold；CpFor mold materials specific heat capacity；
T1The regional aim temperature of heating region where heating flow channel；T0The initial temperature of heating region where heating flow channel.
7. quick method for heating and controlling as claimed in claim 4, which is characterized in that further include controller according to being arranged in mold
On the temperature information of temperature sensor feedback adjust in each heating region in heating flow channel the step of the flow of high temperature fluid.
8. a kind of mold heating system, which is characterized in that including high temperature fluid source, the high-temperature stream for exporting the high temperature fluid source
Body is divided into the diversion mechanism as described in one of claim 1-3 at least all the way, offers at least one heating flow channel mold,
And according to quick method for heating and controlling described in one of claim 4-7 according to die size, modular construction and the hot object of raw material
Property parameter, on-off to the fluid outlet of the diversion mechanism and flow carry out the controller of process matching；
One heating flow channel and a fluid outlet pass through piping connection；
The high temperature fluid control terminal of controller is electrically connected with the switch terminals in high temperature fluid source, the first valve control terminal of controller with
The control terminal of first flow regulating valve is electrically connected.
9. mold heating system as claimed in claim 8, which is characterized in that further include at least one be arranged on the mold
A temperature sensor, the output end of the temperature sensor are electrically connected with the temperature input of controller.
10. mold heating system as claimed in claim 8, which is characterized in that further include being arranged at the fluid inlet
Second valve control terminal of second flow regulating valve, controller is electrically connected with the control terminal of second flow regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810918733.1A CN109571893A (en) | 2018-08-13 | 2018-08-13 | A kind of diversion mechanism, quick method for heating and controlling and mold heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810918733.1A CN109571893A (en) | 2018-08-13 | 2018-08-13 | A kind of diversion mechanism, quick method for heating and controlling and mold heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109571893A true CN109571893A (en) | 2019-04-05 |
Family
ID=65919695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810918733.1A Pending CN109571893A (en) | 2018-08-13 | 2018-08-13 | A kind of diversion mechanism, quick method for heating and controlling and mold heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109571893A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524640A (en) * | 2021-07-12 | 2021-10-22 | 广东华中科技大学工业技术研究院 | Multi-heat-source hot bending forming die and control method thereof |
| CN114489186A (en) * | 2021-09-06 | 2022-05-13 | 长沙卓牧乳业有限公司 | Sheep set yogurt discharging temperature control method, system and device |
| CN115266025A (en) * | 2022-06-29 | 2022-11-01 | 新菲光通信技术有限公司 | Temperature testing device and temperature testing system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103552223A (en) * | 2013-11-08 | 2014-02-05 | 山东大学 | Rapid heating and cooling method and system of injection mould |
| CN103608161A (en) * | 2012-02-27 | 2014-02-26 | Lg化学株式会社 | Apparatus for manufacturing injection-molded articles, and method for manufacturing injection-molded articles using same |
| CN104802379A (en) * | 2014-01-28 | 2015-07-29 | 汉达精密电子(昆山)有限公司 | Rapid heat cycle molding system and molding die thereof |
| US20160185021A1 (en) * | 2014-12-11 | 2016-06-30 | Otto Männer Innovation GmbH | Injection molding apparatus with heated mold cavities |
| DE102016003686A1 (en) * | 2015-04-01 | 2016-10-06 | Fanuc Corporation | Control device of an injection molding machine with cast resin emptying function |
| CN207449036U (en) * | 2017-11-23 | 2018-06-05 | 东莞市凯誉塑胶模具有限公司 | A kind of high gloss mold with heating and temperature-control structure |
-
2018
- 2018-08-13 CN CN201810918733.1A patent/CN109571893A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103608161A (en) * | 2012-02-27 | 2014-02-26 | Lg化学株式会社 | Apparatus for manufacturing injection-molded articles, and method for manufacturing injection-molded articles using same |
| 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 |
| CN103552223A (en) * | 2013-11-08 | 2014-02-05 | 山东大学 | Rapid heating and cooling method and system of injection mould |
| CN104802379A (en) * | 2014-01-28 | 2015-07-29 | 汉达精密电子(昆山)有限公司 | Rapid heat cycle molding system and molding die thereof |
| US20160185021A1 (en) * | 2014-12-11 | 2016-06-30 | Otto Männer Innovation GmbH | Injection molding apparatus with heated mold cavities |
| DE102016003686A1 (en) * | 2015-04-01 | 2016-10-06 | Fanuc Corporation | Control device of an injection molding machine with cast resin emptying function |
| CN207449036U (en) * | 2017-11-23 | 2018-06-05 | 东莞市凯誉塑胶模具有限公司 | A kind of high gloss mold with heating and temperature-control structure |
Non-Patent Citations (1)
| Title |
|---|
| 徐志毅: "《机电一体化实用技术》", 30 April 1995, 上海科学技术文献出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524640A (en) * | 2021-07-12 | 2021-10-22 | 广东华中科技大学工业技术研究院 | Multi-heat-source hot bending forming die and control method thereof |
| CN113524640B (en) * | 2021-07-12 | 2023-01-13 | 广东华中科技大学工业技术研究院 | Multi-heat-source hot bending forming die and control method thereof |
| CN114489186A (en) * | 2021-09-06 | 2022-05-13 | 长沙卓牧乳业有限公司 | Sheep set yogurt discharging temperature control method, system and device |
| CN115266025A (en) * | 2022-06-29 | 2022-11-01 | 新菲光通信技术有限公司 | Temperature testing device and temperature testing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110027139A (en) | A kind of mould preparation method, mold, mold heating system and method for heating and controlling | |
| CN109571893A (en) | A kind of diversion mechanism, quick method for heating and controlling and mold heating system | |
| CN105172080B (en) | Cooling controller and method for injection mold | |
| CA2215801C (en) | On-demand fast cycle mold | |
| CN109049591A (en) | A kind of injection mold temperature controller and its control method | |
| JP2005515084A5 (en) | ||
| Chen et al. | Gas-assisted mold temperature control for improving the quality of injection molded parts with fiber additives | |
| JP2005132079A (en) | Heating runner coextrusion nozzle | |
| CN201313376Y (en) | Adjustment mechanism of cooling device of tubular thin layer production equipment | |
| JP6844938B1 (en) | Mold temperature control system | |
| CN105172079A (en) | Cooling circulation system for injection mold and control method of cooling circulation system | |
| CN107956679B (en) | Method for detecting rated power delivery of pump system | |
| US20080290542A1 (en) | Hot Runner Having Temperature Sensor for Controlling Nozzle Heater | |
| CN109366918A (en) | A kind of moulding material constant-temperature cooling system being used cooperatively with the cold embryo machine of EVA | |
| CN108556295A (en) | A kind of injection mold multi-point temperature control system | |
| CN109177103A (en) | Fast change mould temperature device and alternating temperature control method based on supercritical fluid | |
| CN203427294U (en) | Water temperature control device of plastic mold | |
| EP0920969B1 (en) | Injection molding means | |
| CN103707477A (en) | Injection mold | |
| CN105764666B (en) | Method for controlling the filling of at least one chamber | |
| CN107471573A (en) | A kind of equipment of technology injection moulding plastic product using control die cavity surface temperature | |
| CN205853286U (en) | A kind of structure of controlling temperature of hot runner mould | |
| CN207682807U (en) | A kind of precision die with warning module | |
| JP3787614B2 (en) | Gate heating control method in multi-cavity mold | |
| CN207190171U (en) | Based on multi-cavity multiple spot precision TOP-TIP mould |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
|
| RJ01 | Rejection of invention patent application after publication |