CN213500670U - Mold temperature controller - Google Patents
Mold temperature controller Download PDFInfo
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- CN213500670U CN213500670U CN202022144535.XU CN202022144535U CN213500670U CN 213500670 U CN213500670 U CN 213500670U CN 202022144535 U CN202022144535 U CN 202022144535U CN 213500670 U CN213500670 U CN 213500670U
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Abstract
The utility model relates to a mould temperature machine relates to the field of mould processing, and it includes the oil tank, the oil tank is connected with out oil pipe, the other end that goes out oil pipe is connected with the heater, heater connection has the notes oil pipe that is used for oiling in the mould, the oil tank still is connected with the blast pipe, the blast pipe is connected with the aiutage, the aiutage is connected with the recovery tube that is used for retrieving mould oil, the aiutage is connected with and adds oil pipe, the other end that adds oil pipe is connected in the heater, it adds oil pipe and aiutage to switch on in order to realize carminative solenoid valve to add to be connected with control. The present application has the effect of reducing the air contained in the pipeline.
Description
Technical Field
The application relates to the field of die machining, in particular to a die temperature controller.
Background
However, in the process of injection molding, the plastic part is deformed due to thermal residual stress, so that the mold can be opened only by cooling the molded product to a certain temperature in the injection molding process, and therefore, a mold temperature machine is produced. At present, the mold temperature controller mainly comprises a hot mold temperature controller and a cold mold temperature controller.
The prior patent with the publication number of CN 105799100B discloses a cold-hot integrated mold temperature controller, which comprises a first condenser, a second condenser, a compressor, a first evaporator, a second evaporator, a first three-way reversing valve with two inlets and one outlet, a second three-way reversing valve with one inlet and two outlets, a first throttling device, a second throttling device, a hot side solution tank, a hot side circulating pump, a cold side solution tank and a cold side circulating pump.
With respect to the related art in the above, the inventors found that: air originally exists in the mould, and the air in the mould is discharged into the pipeline together when the liquid enters the mould and then is discharged into the pipeline from the hot side liquid return port, so that more air exists in the pipeline, and the mould is not convenient to process.
SUMMERY OF THE UTILITY MODEL
In order to reduce the air contained in the pipeline, the application provides a mold temperature controller.
The application provides a mould temperature machine adopts following technical scheme:
the utility model provides a mould temperature machine, includes the oil tank, the oil tank is connected with out oil pipe, the other end that goes out oil pipe is connected with the heater, heater connection has the notes oil pipe that is used for oiling in the mould, the oil tank still is connected with the blast pipe, the blast pipe is connected with the aiutage, the aiutage is connected with the recovery tube that is used for retrieving mould oil, the aiutage is connected with and adds oil pipe, the other end that adds oil pipe is connected in the heater, it adds oil pipe and aiutage to switch on in order to realize carminative solenoid valve to add to be connected with control.
Through adopting above-mentioned technical scheme, the mould oil that has the air closes the solenoid valve before letting in the aiutage, and mould oil gets into the aiutage together with the air, and the volume of mould oil increases gradually in the aiutage, because the density of mould oil is greater than the density of air, and the air is located the top of mould oil, and when discharging mould oil from the aiutage, only need the liquid level of mould oil to be higher than the height that oil adding pipe and aiutage link to each other, the air that oil adding pipe contained when can reducing mould oil and discharging into oil adding pipe.
Optionally, the solenoid valve is connected with its oil mass control mechanism of opening and close according to mould oil liquid level control in the aiutage, oil mass control mechanism includes:
the first liquid level sensor is arranged in the exhaust funnel and used for detecting the liquid level height of the die oil in the exhaust funnel and outputting a low liquid level detection signal;
the low liquid level adjusting module is preset with a low liquid level preset value, the input end of the low liquid level adjusting module is connected with the output end of the first liquid level sensor, receives a low liquid level detection signal, compares the low liquid level detection signal with the low liquid level preset value and outputs a first control signal for controlling the opening and closing of the electromagnetic valve;
the second liquid level sensor is arranged in the exhaust funnel, is higher than the first liquid level sensor in the vertical direction, and is used for detecting the liquid level height of the mold oil in the exhaust funnel and outputting a high liquid level detection signal;
and the high liquid level adjusting module is preset with a high liquid level preset value, the input end of the high liquid level adjusting module is connected with the output end of the second liquid level sensor, receives a high liquid level detection signal, compares the high liquid level detection signal with the high liquid level preset value, and outputs a second control signal for controlling the opening and closing of the electromagnetic valve.
By adopting the technical scheme, the automatic control of the liquid level can be realized through the first liquid level sensor, the low liquid level regulating module, the second liquid level sensor and the high liquid level regulating module, and the practical simplicity is improved.
Optionally, the low liquid level adjusting module includes a low liquid level comparison circuit connected to the output end of the first liquid level sensor, the low liquid level comparison circuit is preset with a low liquid level preset value, receives a low liquid level detection signal output by the first liquid level sensor and compares the low liquid level detection signal with the low liquid level preset value, the low liquid level comparison circuit is connected with a low liquid level control unit, and the low liquid level control unit outputs a low liquid level control signal for controlling the closing of the electromagnetic valve.
By adopting the technical scheme, the low liquid level comparison circuit compares the liquid level with the low liquid level preset value and outputs the low liquid level control signal to control the opening and closing of the electromagnetic valve through the low liquid level control unit.
Optionally, the exhaust pipe is connected with a check valve for discharging gas in the exhaust cylinder into the oil tank.
Through adopting above-mentioned technical scheme, the check valve can avoid the aiutage to reduce the possibility that leads to mould oil in the oil tank to get into the aiutage through the blast pipe when the aiutage is arranged oil.
Optionally, the recovery pipe is connected with a filter screen for filtering mold residues in the mold oil.
By adopting the technical scheme, the impurities of the die oil discharged from the die are removed, and the purity of the die oil is improved.
Optionally, the oil outlet pipe is connected with a circulation pump for overcoming pressure drop.
Through adopting above-mentioned technical scheme, the circulating pump is used for overcoming the pressure drop that mould oil gets into the heater via oil pipe and oil filling pipe.
Optionally, the recovery pipe is connected with an oil return valve, the oil outlet pipe is connected with an oil outlet valve, and a bypass valve convenient for opening the oil return valve and the oil outlet valve is connected between the oil return valve and the oil outlet valve.
Through adopting above-mentioned technical scheme, the bypass valve can balance the pressure between oil return valve and the delivery valve, is convenient for open of oil return valve and delivery valve.
Optionally, a liquid level perspective window convenient for observing the internal oil quantity is arranged on the oil tank.
By adopting the technical scheme, the mold oil can be conveniently added into the oil tank in time.
In summary, the present application includes at least one of the following beneficial technical effects:
the exhaust funnel and the electromagnetic valve are arranged to exhaust air in the die oil exhausted from the die;
the oil level control mechanism can adjust the liquid level height in the exhaust funnel, and the operation simplicity is improved.
Drawings
Fig. 1 is a system diagram of a mold temperature controller according to an embodiment of the present disclosure.
Fig. 2 is a sectional view mainly showing an exhaust funnel according to an embodiment of the present application.
Fig. 3 is a circuit diagram of an oil amount control mechanism according to an embodiment of the present application.
Description of reference numerals: 1. an oil tank; 2. an oil outlet pipe; 3. a heater; 4. an exhaust funnel; 5. an exhaust pipe; 6. a recovery pipe; 7. adding an oil pipe; 8. an electromagnetic valve; 9. a first liquid level sensor; 10. a low liquid level adjustment module; 11. a second liquid level sensor; 12. a high liquid level adjustment module; 13. a low level comparison circuit; 14. a low liquid level control unit; 15. a one-way valve; 16. a filter screen; 17. a circulation pump; 18. an oil return valve; 19. an oil outlet valve; 20. a bypass valve; 21. a liquid level perspective window; 22. a high level comparison circuit; 23. a high liquid level control unit; 24. connecting sleeves; 25. and an oil filling pipe.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a mold temperature controller. Referring to fig. 1, the mold temperature controller comprises an oil tank 1, wherein the oil tank 1 is used for placing mold oil, the bottom of the oil tank 1 is hermetically connected with an oil outlet pipe 2, and the oil outlet pipe 2 is communicated with the inside of the oil tank 1; the other end of the oil outlet pipe 2 is connected with a heater 3, the heater 3 is used for heating mould oil, the heater 3 is connected with an oil injection pipe 25 used for injecting oil into the mould, and the other end of the oil injection pipe 25 is connected with an oil inlet of the mould.
Referring to fig. 1 and 2, in order to facilitate recycling of the mold oil, an oil outlet of the mold is connected with a recycling pipe 6, and since air originally exists in the mold, the mold oil is discharged into the recycling pipe 6 after passing through the mold, a large amount of air exists in the recycling pipe 6, which is not favorable for recycling of the mold oil; in order to solve the problems, a recovery pipe 6 is hermetically communicated with an exhaust funnel 4, the recovery pipe 6 is close to the top of the exhaust funnel 4, the top of the exhaust funnel 4 is hermetically communicated with an exhaust pipe 5, the other end of the exhaust pipe 5 is hermetically communicated with an oil tank 1, and the exhaust pipe 5 is close to the top of the oil tank 1; the exhaust cylinder 4 is also hermetically communicated with an oil adding pipe 7, the oil adding pipe 7 is close to the bottom of the oil tank 1, and the other end of the oil adding pipe 7 is connected to the heater 3; an electromagnetic valve 8 for controlling the oil adding pipe 7 to be communicated with the exhaust funnel 4 to exhaust is connected between the oil adding pipe 7 and the exhaust funnel 4, and in the application, the electromagnetic valve 8 is a normally open electromagnetic valve; the electromagnetic valve 8 is closed before the mold oil with the air is introduced into the exhaust funnel 4, the mold oil and the air enter the exhaust funnel 4 together, the amount of the mold oil in the exhaust funnel 4 is gradually increased, the air is positioned above the mold oil, and when the mold oil is discharged from the exhaust funnel 4, the liquid level of the mold oil is only required to be higher than the height of the connection part of the oil adding pipe 7 and the exhaust funnel 4, so that the air contained in the oil adding pipe 7 when the mold oil is discharged into the oil adding pipe 7 can be reduced.
Referring to fig. 2 and 3, solenoid valve 8 is connected with its oil mass control mechanism who opens and close according to mould oil liquid level control in the aiutage 4, and oil mass control mechanism includes: the liquid level control system comprises a first liquid level sensor 9, a low liquid level adjusting module 10, a second liquid level sensor 11 and a high liquid level adjusting module 12; the first liquid level sensor 9 is a static pressure type liquid level sensor, the first liquid level sensor 9 is fixedly connected inside the exhaust funnel 4 and close to the bottom of the exhaust funnel 4, the height of the first liquid level sensor 9 in the vertical direction is larger than the height of the joint of the oil adding pipe 7 and the exhaust funnel 4, and the first liquid level sensor 9 is used for detecting the liquid level height of the mold oil in the exhaust funnel 4 and outputting a low liquid level detection signal; the low liquid level adjusting module 10 is preset with a low liquid level preset value, the input end of the low liquid level adjusting module is connected with the output end of the first liquid level sensor 9, receives a low liquid level detection signal, compares the low liquid level detection signal with the low liquid level preset value, and outputs a low liquid level control signal for controlling the opening and closing of the electromagnetic valve 8.
Referring to fig. 3, the second liquid level sensor 11 is also a static pressure type liquid level sensor and is fixedly connected inside the exhaust funnel 4, the height of the second liquid level sensor 11 in the vertical direction is greater than the height of the first liquid level sensor 9, and the second liquid level sensor 11 is used for detecting the liquid level height of the mold oil in the exhaust funnel 4 and outputting a high liquid level detection signal; the high liquid level adjusting module 12 is preset with a high liquid level preset value, the input end of the high liquid level adjusting module is connected with the output end of the second liquid level sensor 11, receives a high liquid level detection signal, compares the high liquid level detection signal with the high liquid level preset value, and outputs a second control signal for controlling the opening and closing of the electromagnetic valve 8.
Referring to fig. 3, the low liquid level adjusting module 10 includes a low liquid level comparison circuit 13 connected to the output end of the first liquid level sensor 9, a low liquid level preset value is preset in the low liquid level comparison circuit 13, a low liquid level detection signal output by the first liquid level sensor 9 is received and compared with the low liquid level preset value, the low liquid level comparison circuit 13 is connected with a low liquid level control unit 14, and the low liquid level control unit 14 outputs a low liquid level control signal for controlling the opening and closing of the solenoid valve 8.
Referring to fig. 3, the low liquid level comparison circuit 13 includes a first reference circuit for generating a low liquid level preset value, an output end of the first reference circuit is connected with a comparator a, and the first reference circuit includes a resistor R1 and a slide rheostat R2; the positive phase input end of the comparator A is connected with the output end of the first liquid level sensor 9, the negative phase input end of the comparator A is respectively connected with the resistor R1 and the slide rheostat R2, the other end of the resistor R1 is connected with a power supply VCC, and the other end of the slide rheostat R2 is grounded; when the first liquid level sensor 9 detects that the liquid level in the exhaust funnel 4 exceeds a low liquid level preset value, the comparator A outputs a high level signal; when the liquid level sensor detects that the liquid level in the exhaust funnel 4 is lower than a low liquid level preset value, the comparator A outputs a low level signal.
Referring to fig. 3, the low liquid level control unit 14 includes a triode Q1, a relay KM1, and a freewheeling diode D1, the triode Q1 is an NPN-type triode, the relay KM1 has a coil, a normally closed contact KM1-1, a normally open contact KM1-2, a normally closed contact KM1-1, and a normally open contact KM1-2 for receiving and responding to the low liquid level control signal, the coil of the relay KM1 is connected in series between the collector of the triode Q1 and the power supply VCC, the normally closed contact KM1-1 and the normally open contact KM1-2 of the relay KM1 are connected in parallel in the power supply loop of the solenoid valve 8, the base of the triode Q1 is connected to the output terminal of the comparator a, the emitter of the triode Q1 is grounded, the anode of the freewheeling diode D1 is connected between the collector of the triode Q1 and the coil of the relay; when the comparator A outputs a high-level signal, the triode Q1 is conducted, and the coil of the relay KM1 is electrified, so that the normally closed contact KM1-1 is opened, and the normally open contact KM1-2 is closed; when the comparator A outputs a low-level signal, the triode Q1 is cut off, the relay KM1 is not electrified, so that the normally closed contact KM1-1 is kept closed, and the normally open contact KM1-2 is kept open.
Referring to fig. 3, high liquid level regulation module 12 is including connecting in the high liquid level comparison circuit 22 of 11 outputs of second liquid level sensor, and high liquid level comparison circuit 22 has preset high liquid level default, receives the high liquid level detection signal of 11 outputs of second liquid level sensor and compares with high liquid level default, and high liquid level comparison circuit 22 is connected with high liquid level control unit 23, and high liquid level control unit 23 output is used for controlling the high liquid level control signal that solenoid valve 8 opened and close.
Referring to fig. 3, the high liquid level comparison circuit 22 includes a second reference circuit for generating a high liquid level preset value, an output end of the second reference circuit is connected with a comparator B, and the second reference circuit includes a resistor R3 and a slide rheostat R4; the positive phase input end of the comparator B is connected with the output end of the second liquid level sensor 11, the negative phase input end of the comparator B is respectively connected with the second resistor R3 and the slide rheostat R4, the other end of the second resistor R3 is connected with a power supply VCC, and the other end of the slide rheostat R4 is grounded; when the second liquid level sensor 11 detects that the liquid level in the exhaust cylinder 4 exceeds a high liquid level preset value, the comparator B outputs a high level signal; when the second liquid level sensor 11 detects that the liquid level in the exhaust cylinder 4 is lower than the high liquid level preset value, the comparator B outputs a low level signal.
Referring to fig. 3, the high liquid level control unit 23 includes a triode Q2, a relay KM2, and a second freewheeling diode D2, where the triode Q2 is an NPN-type triode, the relay KM2 has a coil and a normally closed contact KM-2, the normally closed contact KM-2 is used to receive and respond to a high liquid level control signal, the coil of the relay KM2 is connected in series between the collector of the triode Q2 and the power supply VCC, the normally closed contact KM-2 and the normally open contact KM1-1 of the relay KM2 are connected in series and then connected in parallel in the power supply loop of the solenoid valve 8, the base of the triode Q2 is connected to the output end of the comparator B, the emitter of the triode Q2 is grounded, the anode of the freewheeling diode D2 is connected between the collector of the triode Q2 and the coil of the relay; when the comparator B outputs a high-level signal, the triode Q2 is conducted, and the coil of the relay KM2 is electrified, so that the normally closed contact KM-2 is closed; when the comparator B outputs a high-level signal, the triode Q2 is cut off, the relay KM2 is not electrified, and the normally closed contact KM-2 is kept open.
Referring to fig. 1, the oil outlet pipe 2 and the oil filling pipe 7 are in sealed communication with a circulating pump 17, and the circulating pump 17 is used for overcoming the pressure drop of the mold oil entering the heater 3 through the oil outlet pipe 2 and the oil filling pipe 7, so that the mold oil can enter the heater 3 conveniently.
Referring to fig. 1, the recovery pipe 6 is connected with an oil return valve 18 for controlling the opening and closing of the recovery pipe, the oil outlet pipe 2 is connected with an oil outlet valve 19 for controlling the opening and closing of the oil outlet pipe, a bypass valve 20 for facilitating the opening of the oil return valve 18 and the oil outlet valve 19 is connected between the oil return valve 18 and the oil outlet valve 19, and the bypass valve 20 can balance the pressure between the oil return valve 18 and the oil outlet valve 19 and facilitate the opening of the oil return valve 18 and the oil outlet valve 19.
Referring to fig. 1, a liquid level perspective window 21 convenient for observing the internal oil amount is formed in the oil tank 1, and the liquid level height of the mold oil in the oil tank 1 can be found in time through the liquid level perspective window 21, so that the mold oil can be added into the oil tank 1 in time.
Referring to fig. 1 and 2, the vent pipe 5 is connected with a check valve 15 for discharging gas in the vent pipe 4 into the oil tank 1, air discharged from the vent pipe 4 can enter the oil tank 1, the pressure in the oil tank 1 is increased, so that oil in the oil tank 1 is discharged into the oil outlet pipe 2, and meanwhile, the check valve 15 can avoid the possibility that mold oil in the oil tank 1 enters the vent pipe 4 through the vent pipe 5 due to the reduction of the internal pressure of the vent pipe 4 during oil discharge.
Referring to fig. 2, the recovery pipe 6 is connected with a filter screen 16 for filtering mold residues in the mold oil; the periphery of the filter screen 16 is provided with an arc-shaped connecting sleeve in a surrounding manner, the recovery pipe 6 is provided with an opening for splicing the connecting sleeve, the recovery pipe 6 is arranged in an inclined manner, and the height of one end, close to the exhaust funnel 4, of the recovery pipe 6 is lower than that of one end, far away from the exhaust funnel 4, of the recovery pipe 6.
The implementation principle of the mold temperature controller in the embodiment of the application is as follows: before recovering the mould oil, a power supply loop of the electromagnetic valve 8 is not connected into a power system, and the mould oil is added into the exhaust funnel 4; when the liquid level height of the added mold oil is greater than the height of the joint of the oil adding pipe 7 and the exhaust funnel 4, the recovery pipe 6 is connected with an oil outlet of the mold, the mold oil enters the exhaust funnel 4 through the recovery pipe 6, the liquid level height of the mold oil in the exhaust funnel 4 is higher and higher, when the second liquid level sensor 11 detects that the liquid level exceeds a preset liquid level value, the comparator B outputs a high level signal, at the moment, the triode Q2 is conducted, the coil of the relay KM2 is electrified, and the normally closed contact KM-2 is opened; comparator A is high level signal equally output, triode Q1 switches on, relay KM1 is electrified, make normally closed contact KM1-1 open, normally open contact KM1-2 is closed, and then make solenoid valve 8's power supply loop not switch on, because solenoid valve 8 is normally open type solenoid valve, mould oil in the aiutage 4 is via adding oil pipe 7 discharge aiutage 4, lead to the interior liquid level of aiutage 4 to descend, when discharging mould oil from aiutage 4, only need mould oil's liquid level to be higher than the height of the department that oil pipe 7 and aiutage 4 link, the air that oil pipe 7 contains when can reducing mould oil and discharge into adding oil pipe 7.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A mould temperature machine which is characterized in that: including oil tank (1), oil tank (1) is connected with out oil pipe (2), the other end that goes out oil pipe (2) is connected with heater (3), heater (3) are connected with and are used for oiling in the mould oiling annotate oil pipe (25), oil tank (1) still is connected with blast pipe (5), blast pipe (5) are connected with aiutage (4), aiutage (4) are connected with recovery tube (6) that are used for retrieving mould oil, aiutage (4) are connected with and add oil pipe (7), the other end that adds oil pipe (7) is connected in heater (3), it adds oil pipe (7) and aiutage (4) and switches on in order to realize carminative solenoid valve (8) to be connected with control between oil pipe (7) and aiutage (4).
2. The mold temperature machine of claim 1, wherein: solenoid valve (8) are connected with its oil mass control mechanism who opens and close of mould oil liquid level control in according to aiutage (4), oil mass control mechanism includes:
the first liquid level sensor (9) is arranged inside the exhaust funnel (4) and used for detecting the liquid level height of the mold oil in the exhaust funnel (4) and outputting a low liquid level detection signal;
the low liquid level adjusting module (10) is preset with a low liquid level preset value, the input end of the low liquid level adjusting module is connected with the output end of the first liquid level sensor (9), receives a low liquid level detection signal, compares the low liquid level detection signal with the low liquid level preset value, and outputs a first control signal for controlling the opening and closing of the electromagnetic valve (8);
the second liquid level sensor (11) is arranged in the exhaust funnel (4), is higher than the first liquid level sensor (9) in the vertical direction, and is used for detecting the liquid level height of the mold oil in the exhaust funnel (4) and outputting a high liquid level detection signal;
and the high liquid level adjusting module (12) is preset with a high liquid level preset value, the input end of the high liquid level adjusting module is connected with the output end of the second liquid level sensor (11), receives a high liquid level detection signal, compares the high liquid level detection signal with the high liquid level preset value, and outputs a second control signal for controlling the opening and closing of the electromagnetic valve (8).
3. The mold temperature machine of claim 2, wherein: the low liquid level adjusting module (10) comprises a low liquid level comparison circuit (13) connected to the output end of the first liquid level sensor (9), a low liquid level preset value is preset in the low liquid level comparison circuit (13), a low liquid level detection signal output by the first liquid level sensor (9) is received and compared with the low liquid level preset value, the low liquid level comparison circuit (13) is connected with a low liquid level control unit (14), and the low liquid level control unit (14) outputs a low liquid level control signal used for controlling the electromagnetic valve (8) to be closed.
4. The mold temperature machine of claim 1, wherein: the exhaust pipe (5) is connected with a one-way valve (15) which is used for discharging the gas in the exhaust cylinder (4) into the oil tank (1).
5. The mold temperature machine of claim 1, wherein: the recycling pipe (6) is connected with a filter screen (16) used for filtering mold residues in the mold oil.
6. The mold temperature machine of claim 1, wherein: the oil outlet pipe (2) is connected with a circulating pump (17) for overcoming pressure drop.
7. The mold temperature machine of claim 1, wherein: the recycling pipe (6) is connected with an oil return valve (18), the oil outlet pipe (2) is connected with an oil outlet valve (19), and a bypass valve (20) which is convenient for the oil return valve (18) and the oil outlet valve (19) to open is connected between the oil return valve (18) and the oil outlet valve (19).
8. The mold temperature machine of claim 1, wherein: a liquid level perspective window (21) convenient for observing the internal oil quantity is formed in the oil tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022144535.XU CN213500670U (en) | 2020-09-24 | 2020-09-24 | Mold temperature controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022144535.XU CN213500670U (en) | 2020-09-24 | 2020-09-24 | Mold temperature controller |
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| CN213500670U true CN213500670U (en) | 2021-06-22 |
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