CN109910254A - A kind of temperature control system of molding mold cavity high-temperature gas circulation - Google Patents
A kind of temperature control system of molding mold cavity high-temperature gas circulation Download PDFInfo
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- CN109910254A CN109910254A CN201910101901.2A CN201910101901A CN109910254A CN 109910254 A CN109910254 A CN 109910254A CN 201910101901 A CN201910101901 A CN 201910101901A CN 109910254 A CN109910254 A CN 109910254A
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Abstract
The invention discloses a kind of temperature control systems of molding mold cavity high-temperature gas circulation, extraneous gas including control mold cavity gas disengaging connects system, valve pipeline system, heat-exchange system and program control system, realize that high-temperature gas circulates in mold cavity by gas booster on the branch line and branch line that are equipped between intake valve and heater and valve, rapidly heating moulds surface, realize recycling for high-temperature gas, improve the efficiency on heating mould surface, reduce the cooling rate of plastic melt, the copying surface ability of material is provided, foaming skin layer thickness can be regulated and controled, improve product surface defect caused by independent gas back pressure, improve the surface quality of foaming product.
Description
Technical field
The invention belongs to injection molding fields, and in particular to the temperature control of molding mold cavity high-temperature gas circulation
System.
Background technique
Fretting map is the light-weighted important channel of plastic part, but fretting map products surface quality is poor, generally not
It can be directly used in appearance member, limit the large-scale application of fretting map technology.For surface quality problems, carry out both at home and abroad big
Quantifier elimination, most efficient method are exactly gas back pressure technology, dynamic analog temperature technique.
Currently, ZL201010278060.1 combines gas back pressure with dynamic analog temperature system, it include two sets of independent gas
Body back-pressure feed unit and high-temperature gas feed unit, high-temperature gas feed unit are mainly that cavity surface is heated, back-pressure
Gas feed unit makes injection moulded products have preferable surface quality and abscess appropriate to provide back-pressure when ejection formation
Size and uniformity.The gas of high temperature feed unit is excluded after entering die cavity by shooting road, does not consider Gas recovery, heating
Inefficiency, and there are security risks;The gas of back-pressure gas feed unit enters closed die cavity after heater heats,
It is only high-temperature counter pressure full of type chamber, to the extremely limited of die surface heating effect;Exhaust is only controlled by pressure relief valve,
It is not directed to accurate Quick air-discharge problem, product is easy to produce the single back-pressure gas bring product surface defect such as pit.Specially
Benefit number: ZL201210517381.1 provides a kind of injection mold control pressurer system and method, and gas discharge is dynamic in the technology
Power derives from type chamber and barometric pressure difference, and system is only simple to open exhaust valve, and gas expulsion efficiency is low, speed is slow, cannot
Constant speed controls gas discharge rate.The patent No.: it is let out in ZL201420217881.8 in pressure relief pipe end addition vacuum pump acceleration
Pressure, but the technology is still unable to constant speed control gas discharge rate, and completely cannot quickly arrange the part with complicated structure each section gas
Out.The patent No.: ZL201610270758.6 although improve gas discharge rate control precision and the blowing pressure distribution it is uniform
Property, but the technology is the vacuum pump discharges for using two different rates, is still not carried out constant speed control gas discharge rate,
Also without solving the injection techniques matching such as deflation rate and injection pressure and speed, product equally exists the back-pressures gas such as pit
Bring product surface defect.Above-mentioned patent is also not involved with the control problem and and mold of gas at high pressures temperature simultaneously
The matching problem of temperature, the stability problem of type intracavity gas pressure when also not solving mold cavity volume transient change.
Summary of the invention
It is an object of the invention to: solve the gas entrance of current plastic products injection molding system high temperature feed unit
It is excluded after die cavity by shooting road, does not consider Gas recovery, heating efficiency is low, and there are security risks, and back-pressure gas supplies
Enter closed die cavity after heater heats to the gas of unit, be only high-temperature counter pressure full of type chamber, to die surface plus
Thermal effect it is extremely limited, will cause the problem of product is easy to produce the back-pressures gas bring product surface defect such as pit, mention
A kind of temperature control system of molding mold cavity high-temperature gas circulation is gone out.
The technical solution adopted by the invention is as follows:
A kind of temperature control system of molding mold cavity high-temperature gas circulation, including control mold cavity gas disengaging
Extraneous gas connects system and valve pipeline system, and the heat-exchange system of control mold cavity gas temperature,
Extraneous gas connects system: being vented including air feed interface, exhaust port, mold cavity intake interface and mold cavity
Interface;
Valve pipeline system: the first intake valve being connect including one end with air feed interface, one end and mold cavity air inlet connecting
Second intake valve of mouth connection, the first intake valve other end are connect with the second intake valve other end;It further include one end and mould type
The first valve, one end and the mold cavity exhaust port that the connection of chamber exhaust port and the other end are connect with mold cavity intake interface
The second valve, one end and the connection of mold cavity exhaust port and the other end and row that connection and the other end are connect with the first intake valve
The exhaust valve of gas interface connection, each interface and valve pass through piping connection;
Heat-exchange system includes: the heater being arranged between the second intake valve and the first intake valve, heater connection the
One end of one intake valve connects the second valve simultaneously, further includes carrying out cooling cooling to mold cavity exhaust port discharge gas
Device;
System further include:
Program control system: including the controller being connect with valve pipeline system and heat-exchange system;
Gas booster is equipped between heater and the second valve.
Further, the heater uses heat-conducting oil heating.
Further, the first temperature-measuring module, mold are equipped between the mold cavity intake interface and the second intake valve
Second temperature measurement module is equipped between type chamber exhaust port and exhaust valve, the first temperature-measuring module and second temperature measure mould
Block is connected with controller to be communicated.
Further, described program control system further includes man-machine interface.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, in the present invention, in injection moulding process, the gas being heated or cooled is directly inputted by injection molding by heat change method
Mold cavity adjusts mold cavity internal surface temperature and enters the surface temperature of mold cavity resin, so as to improve Shooting Technique
It is designed with the technique and device of quality, by mutually independent mold intake and exhaust interface, controls gas and pass in and out mold cavity,
A branch line is equipped between intake valve V311 and heater E21, branch line is equipped with valve V351, realizes mold cavity
Interior high-temperature gas circulates, rapidly heating moulds surface, realizes recycling for high-temperature gas, heater E21 and valve
Gas booster Z1 between V351 realizes gas circulating flow in mold cavity for recyclegas from being pressurized.Circulation
High-temperature counter pressure gas can be with rapidly heating moulds mold cavity surface, and plays the role of back-pressure, the heat exchange of die surface and gas
Mode is heat transfer, and the effect of circulation is to improve the efficiency on heating mould surface, reduces the cooling rate of plastic melt, provides material
The copying surface ability of material, can regulate and control foaming skin layer thickness, improve product surface defect caused by independent gas back pressure, mention
The surface quality of high-incidence brewage.
2, in the present invention, heater uses heat-conducting oil heating, and heat-conducting oil heating is precisely controlled conducive to temperature.
3, in the present invention, the first temperature-measuring module 431 and second temperature measurement module 432 are connected progress with controller 41
Communication, it is further accurate to help 41 real-time monitoring system temperature of controller.
4, in the present invention, program control system further includes man-machine interface, realizes artificial adjustment and the state prison of running parameter
Control, application range more convenient to use are wider.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is present system structural schematic diagram;
Fig. 2 is system structure diagram in the embodiment of the present invention 1;
Fig. 3 is the system structure diagram that the second mold cavity exhaust port 14 ' is added in the embodiment of the present invention 1;
Marked in the figure: 11- air feed interface, 12- exhaust port, 13- mold cavity intake interface, the exhaust of 14- mold cavity
Interface, 14 '-the second mold cavity exhaust ports, E21- heater, E22- cooler, the first intake valve of V311-, V312- second
Intake valve, V321- constant pressure valve, V331- first row air valve, V332- second row air valve, 41- controller, 42- man-machine interface, 431-
First temperature-measuring module, 432- second temperature measurement module, 44- communication interface, the first intelligent regulating device of D1-, D2- second
Intelligent regulating device, D3- third intelligent regulating device.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
A kind of temperature control system of molding mold cavity high-temperature gas circulation, as shown in Figure 1, including control mold cavity
The extraneous gas connection system 1 and valve pipeline system 3 of gas disengaging, and the heat exchange series of control mold cavity gas temperature
System 2.
Extraneous gas connects system 1: including air feed interface 11, exhaust port 12, mold cavity intake interface 13 and mold
Type chamber exhaust port 14.Interface form can be one of threaded connection, flanged joint, fast insert-pull or combination.
Valve pipeline system 3: the first intake valve V311 being connect including one end with air feed interface 11, one end and mold cavity
The second intake valve V312 that intake interface 13 connects, the first intake valve V311 other end and the second intake valve V312 other end connect
It connects;It further include the first valve that one end is connect with mold cavity exhaust port 14 and the other end is connect with mold cavity intake interface 13
The second valve that door V341, one end and the connection of mold cavity exhaust port 14 and the other end are connect with the first intake valve V311
V351, one end and the connection of mold cavity exhaust port 14 and the exhaust valve V33 that is connect with exhaust port 12 of the other end, each interface with
Valve passes through piping connection.
Heat-exchange system 2 includes: the heater E21 being arranged between the second intake valve V312 and the first intake valve V311,
One end of heater E21 the first intake valve of connection V311 connects the second valve V351 simultaneously, further includes connecing to mold cavity exhaust
Mouth 14 is discharged gases and carries out cooling cooler E22.Cooler E22 may be provided at mold cavity exhaust port 14 and exhaust valve
Between V33.
System further include:
Program control system 4: including the controller 41 being connect with valve pipeline system and heat-exchange system.Controller 41 with
Valve V311, V312, V341, V33, V351, which are respectively connected with, to be communicated, control valve opening and closing.Controller 41 is equipped with and injection molding
The communication interface 44 of machine communication, communication signal can be switching value, one kind of analog quantity or combination, and wherein analog quantity can be electricity
One kind or combination of stream, voltage.Controller 41 can be PLC, single-chip microcontroller or industrial personal computer, preferably PLC.
Gas booster Z1 is equipped between heater E21 and the second valve V351.
High-temperature gas circulation loop is V351 → Z1 → E21 → V312 → 13 → 14 → V351.
In the present invention, in injection moulding process, the gas being heated or cooled is directly inputted by injection mould by heat change method
Tool type chamber adjusts mold cavity internal surface temperature and enters the surface temperature of mold cavity resin, so as to improve Shooting Technique and
The technique and device of quality design, and by mutually independent mold intake and exhaust interface, control gas and pass in and out mold cavity, into
A branch line is equipped between air valve V311 and heater E21, branch line is equipped with valve V351, realizes in mold cavity
High-temperature gas circulates, rapidly heating moulds surface, realizes recycling for high-temperature gas, heater E21 and valve V351
Between gas booster Z1 realize gas circulating flow in mold cavity for recyclegas from being pressurized.The high temperature of circulation
Back-pressure gas can be with rapidly heating moulds mold cavity surface, and plays the role of back-pressure, reduces the cooling rate of plastic melt, provides
The copying surface ability of material, can regulate and control foaming skin layer thickness, improve product surface defect caused by independent gas back pressure,
Improve the surface quality of foaming product.
Further, the heater E21 heating method is electric heating or heat-conducting oil heating, preferably heat-conducting oil heating, benefit
It is precisely controlled in temperature.
Further, the first temperature-measuring module is equipped between the mold cavity intake interface 13 and the second intake valve V312
431 (can also use pressure temperature measuring module) are equipped with second temperature between mold cavity exhaust port 14 and exhaust valve V33
Measurement module 432 (can also use pressure temperature measuring module), the first temperature-measuring module 431 and second temperature measurement module
432 are connected with controller 41 is communicated, and 41 real-time monitoring system temperature of controller is further helped.Temperature-measuring module is preferred
Temperature sensor and/or transmitter.
Further, described program control system 4 further includes man-machine interface 42.Realize the artificial adjustment and state of running parameter
Monitoring.Man-machine interface 42 is equipped with mold cavity pressure, mold cavity temperature, screw in injection molding machine diameter, heter temperature, die cavity
The input of the processing parameter settings values such as gas circulation time, D3 vacuum degree.It is warm in real time equipped with mold cavity real-time pressure, mold cavity
The real-time displays such as degree.Equipped with soft button such as total start and stop, manual debugging mode, automatic running patterns.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of temperature control system for molding mold cavity high-temperature gas circulation that present pre-ferred embodiments provide, this control
Device processed is applied in plastic products injection molding system, and the control pressurer system of adapted to injection system is cooperated to carry out using completion system
The control of system temperature and pressure, as shown in Fig. 2, system includes:
Extraneous gas connects system 1: including air feed interface 11, exhaust port 12, mold cavity intake interface 13 and mold
Type chamber exhaust port 14.
Valve pipeline system 3: the first intake valve V311 being connect including one end with air feed interface 11, one end and mold cavity
The second intake valve V312 that intake interface 13 connects, the first intake valve V311 other end and the second intake valve V312 other end connect
It connects;It further include the first valve that one end is connect with mold cavity exhaust port 14 and the other end is connect with mold cavity intake interface 13
The second valve that door V341, one end and the connection of mold cavity exhaust port 14 and the other end are connect with the first intake valve V311
V351, one end and the connection of mold cavity exhaust port 14 and the exhaust valve V33 that is connect with exhaust port 12 of the other end, each interface with
Valve passes through piping connection.Exhaust valve V33 may include first row air valve V331 and second row air valve V332, further include one end and mould
The first row air valve that constant pressure valve V321, one end and the mold cavity exhaust port 14 that tool type chamber exhaust port 14 connects connect
V331, the second row air valve V332 that one end is connect with exhaust port 12.
Heat-exchange system 2 includes: the heater E21 heated to the gas of mold cavity intake interface 13 to be inputted,
Cooling cooler E22 is carried out with gas is discharged to mold cavity exhaust port 14.Heater E21 is located at the first intake valve V311
Between intelligent regulating device D1, cooler E22 be located at mold cavity exhaust port 14 and pressure release first row air valve V331 it
Between.
Gas booster Z1 is equipped between heater E21 and the second valve V351.
Program control system 4: including the controller 41 being connect with valve pipeline system and heat-exchange system.Controller 41 with
Valve V311, V312, V321, V331, V332, V341, V351, which are respectively connected with, to be communicated, control valve opening and closing, controller 41
Control the heater of heat-exchange system or the working condition of cooler.Controller 41 is equipped with the communication interface communicated with injection molding machine
44, controller 41 is PLC.
The first intelligent regulating device D1 is equipped between first intake valve V311 and the second intake valve V312, constant pressure valve V321 is another
One end is connected with the second intelligent regulating device D2, and third is equipped between first row air valve V331 and second row air valve V332 and is intelligently adjusted
Regulating device D3, it includes screw in injection molding machine diameter, injection moulding speed, injection displacement, injection time and die cavity that intelligent regulating device, which is read,
(purpose for reading data is to obtain the volume that melt in mold is molded into the unit time to the parameter of pressure, i.e. mould type cavity
Long-pending knots modification, and then adjust the knots modification of intelligent regulating device volume), controller 41 is led to all intelligent regulating devices
News change intelligent regulating device internal volume, protect according to the relevant parameter control valve pipe-line system that intelligent regulating device is read
It is constant to demonstrate,prove mold cavity residual volume and the total measurement (volume) inside intelligent regulating device in injection process.
Further, the intelligent regulating device includes: the drive module Q1 communicated with controller 41, displacement monitoring mould
(PT1 can monitor mould for pressure and temp by block W1, speed monitoring module S1, time supervision module T1 and pressure monitoring module PT1
Block).Drive module is exactly power source, can be motor, hydraulic cylinder, cylinder etc. and (pushes its piston rod forward by power source
It moves backward, reaches the space size for changing inside intelligent regulating device and being connected thereto pipeline, and then change gas volume
With the size of air pressure);Displacement monitoring module measures distance, may generally be electronic ruler;Time supervision module is exactly timing
Device, speed monitoring module are exactly the assembly of displacement and time supervision module, and pressure monitoring module is exactly pressure transmitter/sensing
Device.
System work step is as follows:
Step 1, controller 41 communication interface 44 connect and communicated with control system for shot machine by data line;Gas supply
Interface 11 is attached with outside gas supply gas source;Exhaust port 12 is attached with vacuum pump;Mold cavity intake interface 13 with
The connection of mold cavity air inlet port;Mold cavity exhaust port 14 is connect with mold cavity exhaust port.
Step 2 is required according to mold cavity volume and the control of product, and mold cavity pressure, mold is arranged to controller 41
The technological parameters such as cavity temperature, screw in injection molding machine diameter, heter temperature, die cavity gas circulation time, D3 vacuum degree (can also be with
It is configured by man-machine interface), controller 41 controls intelligent regulating device D1, and D2, D3 initialization are that is, reserved suitable internal
Volume;Heater E21 is controlled to open.Under original state, valve is all in off state, i.e., valve is normally closed.
Step 3, controller 41 receive injection molding machine molding and complete signal, and control valve V311, V312, V321, V351 are opened,
Gas carries out circulating-heating to cavity surface;41 control valve V332 of controller is opened, while starting external vacuum pump, shape in D3
At vacuum.
When step 4, cavity pressure reach setting value, 41 control valve V311 of controller is closed, and control D1 movement makes die cavity
Pressure is constant;Mold cavity temperature (can allow on mold cavity the temperature sensor installed and connect with controller 41) reaches setting
Second pressure temperature-measuring module 432, temperature are equipped with when value or between mold cavity exhaust port 14 and constant pressure valve V321
After reaching setting value and delay time T1, controller 41 controls heater E21 constant temperature;
Step 5, controller 41 issue permission injection signal to injection molding machine, and injection molding machine starts to inject, and controller controls simultaneously
D1, D2 synchronization action keep mold cavity melt front gas volume constant, and mold cavity pressure is kept constant.
After step 6, injection trigger time T2,41 control valve V331 of controller is opened, V321 is closed, and control D3 is dynamic
Make, keep the vacuum constant, realizes that the part having been filled in injection process starts constant speed exhaust, avoid back-pressure bring pit
The defects of, while can also realize injection process high temperature gas self-loopa, keep melt temperature (to need to connect the second mold cavity
Exhaust port 14 ', as shown in Figure 3).
Step 7, controller 41 receive injection molding machine injection and complete signal, and control valve V312, V351 is closed,;Injection finishes
After delay time T3, control valve V331 is closed.
Step 8, controller 41 allow to be opened signal to injection molding machine sending, start next cycle period.
Embodiment 2
On the basis of example 1, system work step is as follows for present pre-ferred embodiments:
Step 1, controller 41 communication interface 44 connect and communicated with control system for shot machine by data line;Gas supply
Interface 11 is attached with outside gas supply gas source;Exhaust port 12 is attached with vacuum pump;Mold cavity intake interface 13 with
The connection of mold cavity air inlet port;Mold cavity exhaust port 14 is connect with mold cavity exhaust port.
Step 2 is required according to mold cavity volume and the control of product, and mold cavity pressure, mold is arranged to controller 41
The technological parameters such as cavity temperature, screw in injection molding machine diameter, heter temperature, die cavity gas circulation time, D3 vacuum degree (can also be with
It is configured by man-machine interface), controller 41 controls intelligent regulating device D1, D2, D3 initialization, i.e., reserved suitable appearance
Product;Heater E21 is controlled to open.
Step 3, controller 41 receive injection molding machine molding and complete signal, and control valve V311, V312, V341 are opened, gas
Enter mold cavity simultaneously by mold intake and exhaust interface;41 control valve V332 of controller is opened, while starting external vacuum
Pump, D3 is interior to form vacuum.
When step 4, cavity pressure reach setting value, 41 control valve V311, V341 of controller is closed, valve V321,
V351 is opened;Gas booster self-starting, gas carry out circulating-heating to cavity surface;
Step 5, controller 41, which control D1, D2 movement, keeps cavity pressure constant;Mold cavity temperature (can allow on mold cavity
The temperature sensor of installation is simultaneously connect with controller 41) when reaching setting value or mold cavity exhaust port 14 and constant pressure valve
Second pressure temperature-measuring module 432 is equipped between V321, after temperature reaches setting value and delay time T1, controller 41 is controlled
Valve V351 processed is closed, while heater E21 is closed;
Step 6, controller 41 issue permission injection signal to injection molding machine, and injection molding machine starts to inject, and controller controls simultaneously
D1, D2 synchronization action keep mold cavity melt front gas volume constant, and mold cavity pressure is kept constant.
Step 7, controller 41 receive injection molding machine injection and complete signal, and 41 control valve V331 of controller is opened, V312,
V321 is closed, control D3 movement, the defects of keeping the vacuum constant, start constant speed exhaust, avoid back-pressure bring pit.
After step 8, exhaust delay time T4, control valve V331 is closed.Controller 41 allows to be opened to injection molding machine sending
Signal starts next cycle period.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of temperature control system of molding mold cavity high-temperature gas circulation, including the outer of control mold cavity gas disengaging
Portion's gas connection system (1) and valve pipeline system (3), it is characterised in that:
Extraneous gas connect system (1): including air feed interface (11), exhaust port (12), mold cavity intake interface (13) and
Mold cavity exhaust port (14);
Valve pipeline system (3): the first intake valve (V311) being connect including one end with air feed interface (11), one end and mould type
The second intake valve (V312) of chamber intake interface (13) connection, the first intake valve (V311) other end and the second intake valve (V312)
Other end connection;It further include that one end is connect and the other end and mold cavity intake interface (13) with mold cavity exhaust port (14)
The first valve (V341), one end and mold cavity exhaust port (14) connection that connect and the other end and the first intake valve (V311)
The second valve (V351), one end and the mold cavity exhaust port (14) of connection connect and the other end is connect with exhaust port (12)
Exhaust valve (V33), each interface and valve pass through piping connection;System further include:
Heat-exchange system (2) includes: the heater being arranged between the second intake valve (V312) and the first intake valve (V311)
(E21), one end of heater (E21) connection the first intake valve (V311) connects the second valve (V351) simultaneously, further includes to mould
Tool type chamber exhaust port (14) discharge gas carries out cooling cooler (E22);
Program control system (4): including the controller (41) being connect with valve pipeline system and heat-exchange system;
Gas booster (Z1) is equipped between heater (E21) and the second valve (V351).
2. a kind of temperature control system of molding mold cavity high-temperature gas circulation according to claim 1, feature exist
In: the heater (E21) uses heat-conducting oil heating.
3. a kind of temperature control system of molding mold cavity high-temperature gas circulation according to claim 1, feature exist
In: the first temperature-measuring module (431) are equipped between the mold cavity intake interface (13) and the second intake valve (V312), mould
Second temperature measurement module (432) are equipped between tool type chamber exhaust port (14) and exhaust valve (V33), the first temperature-measuring module
(431) it is connected with controller (41) and is communicated with second temperature measurement module (432).
4. a kind of temperature control system of molding mold cavity high-temperature gas circulation according to claim 1, feature exist
In: described program control system (4) further includes man-machine interface (42).
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CN114714566A (en) * | 2022-04-20 | 2022-07-08 | 天津银宝山新科技有限公司 | Plastic tail gate injection mold with large metal insert |
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