CN216158006U - Oil temperature cooling control system of injection molding machine - Google Patents
Oil temperature cooling control system of injection molding machine Download PDFInfo
- Publication number
- CN216158006U CN216158006U CN202122085050.2U CN202122085050U CN216158006U CN 216158006 U CN216158006 U CN 216158006U CN 202122085050 U CN202122085050 U CN 202122085050U CN 216158006 U CN216158006 U CN 216158006U
- Authority
- CN
- China
- Prior art keywords
- oil
- water
- temperature
- water valve
- injection molding
- 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.)
- Active
Links
Images
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application discloses injection moulding machine's oil temperature cooling control system includes: the oil tank is internally provided with a temperature probe for detecting the oil temperature; the water valve is provided with a water valve inlet and a water valve outlet which are connected with the cooling water outlet pipe; the water-cooled heat exchanger is provided with a water inlet connected with the water valve inlet, a water outlet communicated with the water inlet, an oil inlet connected with a system oil return pipe of the injection molding machine, and an oil outlet connected with the oil tank and communicated with the oil inlet; the electric actuator is connected with the water valve to control the on-off of the water valve; and the PLC is electrically connected with the temperature probe and the electric actuator respectively. The oil temperature cooling control system of the injection molding machine solves the problem that the existing oil temperature cooling control system of the injection molding machine is not stable enough, and has the characteristics of energy conservation, stability and reliability.
Description
Technical Field
The utility model relates to the technical field of injection molding machines, in particular to an oil temperature cooling control system of an injection molding machine.
Background
The injection molding machine can be divided into a hydraulic machine, a pure motor and an oil-electric mixer according to a power system, and for the hydraulic machine, the power is mainly converted through hydraulic oil, so that the temperature of the hydraulic oil is inevitably increased. In order to ensure the stability of a power system, a water-cooled heat exchanger is mainly used in the industry at present, the control is carried out by combining an electromagnetic water valve, water in a cooling water tower passes through the electromagnetic water valve through a water conveying pipe and then enters the water-cooled heat exchanger to return to the cooling water tower, the heat of hydraulic oil is taken away by utilizing the cooling water with the temperature lower than that of the hydraulic oil by controlling the opening time of an electromagnetic valve, so that the control of the oil temperature is realized, the control of the cooling time by combining the electromagnetic valve is carried out, and the energy conservation is realized while the cooling effect is ensured.
However, when some products with large gram weight are produced or rubber materials with high viscosity are used, higher rubber melting pressure and longer rubber melting time are often needed, and the problem that the temperature of the hydraulic oil of the system is greatly increased is caused. Therefore, the water-cooled cooling needs the electromagnetic valve to be electrified for a long time, and the water valve is opened for cooling, so that the effect of cooling the hydraulic oil can be achieved. Because the solenoid valve is electrified for a long time, the coil generates heat seriously, the insulation grade of the coil is damaged, and finally the solenoid valve is burnt to cause the oil temperature of the injection molding machine to be overhigh, thereby influencing the continuous production of the injection molding machine.
SUMMERY OF THE UTILITY MODEL
Objects of the utility model
The utility model aims to provide an oil temperature cooling control system of an injection molding machine, which solves the problem that the existing oil temperature cooling control system of the injection molding machine is not stable enough and has the characteristics of energy conservation, stability and reliability.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions:
an oil temperature cooling control system of an injection molding machine, comprising:
the oil tank is internally provided with a temperature probe for detecting the oil temperature; the water valve is provided with a water valve inlet and a water valve outlet which are connected with the cooling water outlet pipe; the injection molding machine is provided with a water inlet connected with the water valve inlet, a water outlet communicated with the water inlet, an oil inlet connected with a system oil return pipe of the injection molding machine, and an oil outlet connected with the oil tank and communicated with the oil inlet; the electric actuator is connected with the water valve to control the on-off of the water valve; and the PLC is electrically connected with the temperature probe and the electric actuator respectively.
In some embodiments, the water outlet is connected to a cooling water tower by a cooling water return pipe, the cooling water tower being connected to the water valve inlet by the cooling water outlet pipe.
In some embodiments, when the temperature probe detects that the oil temperature is greater than or equal to a set temperature value, the electric actuator controls the water valve to open; and when the temperature detected by the temperature probe is lower than a set temperature value, the electric actuator controls the water valve to close.
In some embodiments, the upper limit value of the temperature interval of the oil temperature control in the oil tank is set to be 50 ℃, and the lower limit value is set to be 35 ℃.
In some embodiments, the temperature probe is disposed at a bottom of the fuel tank.
In some embodiments, the electric actuator employs a power supply of DC 240V.
Compared with the prior art, the oil temperature cooling control system of the injection molding machine provided by the utility model has the following beneficial effects:
1. through the PLC, the electric actuator and the temperature probe, the water valve can be opened for cooling only under the overtemperature condition, and the water valve is closed when the temperature is lower than the lower limit of the oil temperature, so that the energy conservation can be realized;
2. use electric actuator control water valve, the ooff valve is steady, reduces the phenomenon that the water hammer appears in the water route, has the function of auto-power-off, has avoided the coil to get the electricity for a long time and has generated heat and lead to the condition of damage to realize the reliable and stable of system.
Drawings
FIG. 1 is a schematic diagram of an oil temperature cooling control system according to an embodiment of the present invention;
fig. 2 is an electrical schematic diagram of the control of the electric actuator according to an embodiment of the present invention.
Reference numerals:
1. an oil tank; 2. a temperature probe; 3. a water valve; 31. a water valve inlet; 32. a water valve outlet; 4. a water-cooled heat exchanger; 41. a water inlet; 42. a water outlet; 43. an oil inlet; 44. an oil outlet; 5. an electric actuator; 6. a PLC controller.
Detailed Description
The technical scheme and the beneficial effects of the utility model are clearer and clearer by further describing the specific embodiment of the utility model with the accompanying drawings of the specification.
Referring to fig. 1-2, an oil temperature cooling control system of an injection molding machine of the present embodiment includes: the device comprises an oil tank 1, a temperature probe 2, a water valve 3, a water-cooled heat exchanger 4, an electric actuator 5 and a PLC (programmable logic controller) 6. The oil tank 1 is internally provided with a temperature probe 2 for detecting the oil temperature, the water valve 3 is provided with a water valve inlet 31 and a water valve outlet 32, and the water valve inlet 31 is connected with a cooling water outlet pipe. The water-cooled heat exchanger 4 is provided with a water inlet 41, a water outlet 42, an oil inlet 43 and an oil outlet 44, wherein the water valve inlet 31 is connected with the water inlet 41, the water inlet 41 is connected with the water outlet 42, and the water outlet 42 outputs water with temperature after heat exchange to the outside, so that the cooling water circulation step is completed. Furthermore, a system oil return pipe of the injection molding machine is connected with the oil inlet 43, the oil inlet 43 is connected with the oil outlet 44, and the oil outlet 44 is connected with the oil tank 1, so that the oil inlet 43 receives hot oil which needs to be cooled in the injection molding machine, the hot oil enters the water-cooled heat exchanger 4 to be cooled through heat exchange, the cooled oil enters the oil tank 1 again from the oil outlet 44, and the oil tank 1 is circularly supplied to the injection molding machine for use, so that the oil temperature is cooled. Furthermore, the electric actuator 5 is connected with the water valve 3 to control the opening and closing of the water valve 3, the PLC 6 is electrically connected with the temperature probe 2 and the electric actuator 5 respectively, the temperature probe 2 detects the temperature of the hydraulic oil in the mailbox to form a feedback signal to the PLC 6, and the PLC 6 processes the feedback signal and then controls the electric actuator 5 to execute a corresponding instruction, so that the electric actuator 5 controls the opening and closing of the water valve 3.
In this embodiment, the water outlet 42 is connected to a cooling water tower through a cooling water return pipe, and the cooling water tower is connected to the water valve inlet 31 through a cooling water outlet pipe. The water outlet 42 of the water-cooled heat exchanger 4 outputs the water with temperature after heat exchange to the outside, and the water enters the cooling water tower through the cooling water return pipe, and the cooling water tower is connected with the water valve inlet 31 through the cooling water outlet pipe, and provides cooling water again to perform the cooling water circulation step.
In this embodiment, when the temperature probe 2 detects that the oil temperature is greater than or equal to a set temperature value (an upper limit value of the oil temperature), the valve opening signal of the electric actuator 5 is powered on, the water valve 3 is controlled to be opened, when the water valve 3 is opened to the maximum position, the valve opening signal of the electric actuator 5 is automatically powered off, the water valve 3 stops rotating and is kept at the opened position, cooling water enters the water-cooled heat exchanger 4 through the water valve 3 and finally returns to the cooling water tower, and the cooling water circulates in this way, so that the cooling of the oil temperature is realized. When the temperature probe 2 detects that the oil temperature is less than a set temperature value (oil temperature limit value), the valve closing signal of the electric actuator 5 is electrified to control the water valve 3 to be closed, and after the water valve 3 is closed to the maximum position, the valve closing signal of the electric actuator 5 is automatically powered off, the water valve 3 stops rotating and is kept at the closed position, so that the flow of cooling water is saved, and the purposes of temperature control and energy saving are achieved.
In the present embodiment, the upper limit value of the temperature range for oil temperature control in the oil tank 1 is set to 50 ℃ and the lower limit value is set to 35 ℃. Specifically, the method comprises the following steps: after the injection molding machine is started, the injection molding machine enters a temperature setting interface, the upper limit value of a temperature interval for setting oil temperature control is 50 ℃, the lower limit value is 35 ℃, when the temperature probe 2 detects that the oil temperature in the oil tank 1 is greater than or equal to 50 ℃, the output point of a cooling water valve of the PLC 6 is closed, the electric actuator 5 is controlled to open the water valve 3, after the water valve 3 is opened in place, a valve opening signal on the electric actuator 5 is automatically disconnected, the water valve 3 keeps an open state, cooling water enters the water-cooled heat exchanger 4 through the water inlet 41, then returns to the cooling water tower from the water outlet 42, and the cooling water tower and the water inlet 41 are cooled in a circulating manner. After cooling for a period of time, when the temperature probe 2 detects that the temperature is less than or equal to 35 ℃, the output point of the cooling water valve of the PLC 6 is disconnected, the electric actuator 5 is controlled to close the water valve 3, after the water valve 3 is closed in place, the valve closing signal on the electric actuator 5 is automatically disconnected, the water valve 3 keeps a closed state, and the system stops the cooling function.
In the embodiment, the temperature probe 2 is arranged at the bottom of the oil tank 1, and can accurately detect the temperature of the hydraulic oil in the oil tank 1.
As shown in fig. 2, in the present embodiment, the electric actuator 5 and the temperature probe 2 are connected in parallel to the control circuit of the PLC controller 6, the control circuit adopts a power supply of DC240V, and the circuit has a simple structure and is convenient for power utilization. Therefore, the water valve 3 can be opened and cooled only under the overtemperature condition through the PLC 6, the electric actuator 5 and the temperature probe 2, the water valve 3 is closed after the temperature is lower than the lower limit of the oil temperature, and energy conservation can be realized.
In summary, the present invention is directed to protecting an oil temperature cooling control system of an injection molding machine based on the above disclosed technical features, and solves the problem that the electromagnetic water valve is easily damaged due to heating caused by long-time energization and affects the continuous production stability of the machine by using the water valve in cooperation with the electric actuator.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (6)
1. An oil temperature cooling control system of an injection molding machine, comprising:
the oil tank is internally provided with a temperature probe for detecting the oil temperature;
the water valve is provided with a water valve inlet and a water valve outlet which are connected with the cooling water outlet pipe;
the water-cooled heat exchanger is provided with a water inlet connected with the water valve inlet, a water outlet communicated with the water inlet, an oil inlet connected with a system oil return pipe of the injection molding machine, and an oil outlet connected with the oil tank and communicated with the oil inlet;
the electric actuator is connected with the water valve to control the on-off of the water valve;
and the PLC is electrically connected with the temperature probe and the electric actuator respectively.
2. The oil temperature cooling control system of an injection molding machine according to claim 1, characterized in that: the delivery port is connected to a cooling water tower through a cooling water return pipe, and the cooling water tower is connected with the water valve inlet through a cooling water outlet pipe.
3. The oil temperature cooling control system of an injection molding machine according to claim 1, characterized in that: when the temperature detected by the temperature probe is greater than or equal to a set temperature value, the electric actuator controls the water valve to open; and when the temperature detected by the temperature probe is lower than a set temperature value, the electric actuator controls the water valve to close.
4. The oil temperature cooling control system of an injection molding machine according to claim 1, characterized in that: the upper limit value of the temperature interval of the oil temperature in the oil tank is set to be 50 ℃, and the lower limit value is set to be 35 ℃.
5. The oil temperature cooling control system of an injection molding machine according to claim 1, characterized in that: the temperature probe is arranged at the bottom of the oil tank.
6. The oil temperature cooling control system of an injection molding machine according to claim 1, characterized in that: the electric actuator uses a DC240V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085050.2U CN216158006U (en) | 2021-08-31 | 2021-08-31 | Oil temperature cooling control system of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085050.2U CN216158006U (en) | 2021-08-31 | 2021-08-31 | Oil temperature cooling control system of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216158006U true CN216158006U (en) | 2022-04-01 |
Family
ID=80840744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122085050.2U Active CN216158006U (en) | 2021-08-31 | 2021-08-31 | Oil temperature cooling control system of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216158006U (en) |
-
2021
- 2021-08-31 CN CN202122085050.2U patent/CN216158006U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106527555A (en) | Heating dehumidification circuit of converter and control method thereof | |
| CN216158006U (en) | Oil temperature cooling control system of injection molding machine | |
| CN208839436U (en) | A kind of temperature-adjustable energy conservation and environmental protection mixing plant | |
| CN203992395U (en) | Vacuum sintering furnace cooling system | |
| CN203997596U (en) | The automatic temp controller of storage tank | |
| CN204943855U (en) | Waste heat recovering water heater of air compressor | |
| CN218100006U (en) | Wire drawing machine circulating water forced air cooling control circuit | |
| CN201893657U (en) | Circulation cooling device for wind power double-fed generator | |
| CN201764669U (en) | Split type electromagnetic water heater | |
| CN211307286U (en) | Cooling system control device of injection mold | |
| CN109765947A (en) | Mining high-voltage explosion-proof frequency converter condensation-proof protective device and control method | |
| CN201547930U (en) | Solar electromagnetic boiler | |
| CN204202179U (en) | Electromagnetic heating system | |
| CN201250370Y (en) | Heat-conducting oil heating device for paper pulp molding die | |
| CN210380636U (en) | Automatic accuse temperature converter switch board | |
| CN207634800U (en) | A kind of electromagnetic valve energy-saving cooling power supply | |
| CN208857391U (en) | A kind of sapphire single-crystal furnace cooling device | |
| CN208571619U (en) | A kind of energy micro-grid system based on distributed power generation and energy storage charging | |
| CN208996136U (en) | A kind of battery emergency circulating water device | |
| CN206330302U (en) | A kind of solar energy and heat pump automatic switching control equipment | |
| CN214371768U (en) | Industrial kiln cooling and waste heat utilization system | |
| CN202943847U (en) | Water cycle energy-saving system of injection molding machine | |
| CN207471660U (en) | A kind of automatic electric heating furnace | |
| CN202151902U (en) | Direct cooling high-temperature water circulating type die temperature machine | |
| CN211668015U (en) | Small boiler heating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |