CN213469537U

CN213469537U - Mold temperature controller

Info

Publication number: CN213469537U
Application number: CN202022285506.5U
Authority: CN
Inventors: 张加卫
Original assignee: Guangzhou Daochen Mold Accessory Co ltd
Current assignee: Guangzhou Daochen Mold Accessory Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-18
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses a mould temperature machine relates to mould temperature machine technical field. The utility model comprises a cabinet, a control module, an expansion oil tank, an oil supply pump, a heater, a mould loop pipeline and a heat exchanger, wherein the control module, the expansion oil tank, the oil supply pump, the heater, the mould loop pipeline and the heat exchanger are arranged on the cabinet; the heat exchanger comprises a heat conduction oil channel and a cooling water channel which exchange heat with each other; an oil outlet of the expansion oil tank is sequentially communicated with an oil supply pump, a heater, a mould loop pipeline and a heat conduction oil channel, and the heat conduction oil channel is communicated with an oil return port of the expansion oil tank to form a heat conduction oil circulation loop; the water inlet pipeline is provided with an electromagnetic valve; temperature sensors are arranged at two ends of the mould loop pipeline, the heater and an oil return opening of the expansion oil tank, the output end of each temperature sensor is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input ends of the heater and the electromagnetic valve respectively. The utility model discloses the inside temperature of control mould that can be accurate can effectively improve the quality of foundry goods, and degree of automation is high.

Description

Mold temperature controller

Technical Field

The utility model relates to a mould temperature machine technical field, concretely relates to mould temperature machine.

Background

The mold temperature controller is mainly applied to temperature control of the mold, the temperature control of the mold directly influences the quality of produced castings, the poor temperature control of the mold can cause the phenomena of surface depression, deformation, unstable size and the like of the produced castings, and the yield of the produced castings is influenced.

The existing mold temperature controller generally heats a heat-conducting medium through a heater, then leads the heat-conducting medium into a mold loop pipeline arranged in a mold, and the heat-conducting medium exchanges heat through the pipe wall of the mold loop pipeline so as to realize the temperature control of the mold. The existing mold temperature controller usually displays the heating temperature of a heater as the temperature inside a mold, and an operator controls the power of the heater according to the production requirement of a casting and the displayed temperature, so as to control the temperature of a heat-conducting medium heated by the heater, thereby regulating and controlling the temperature inside the mold. The above-mentioned mold temperature controller has the following disadvantages:

firstly, heat exchange is carried out between a heat-conducting medium and the side wall of a pipeline and the outside in the process of flowing from a heater to a pipeline of a mould loop, and a certain temperature difference exists between the heating temperature of the heater and the temperature of the heat-conducting medium actually entering a mould, so that the temperature difference exists between the temperature displayed by a mould temperature controller and the actual temperature in the mould, and the displayed temperature is not accurate, so that an operator can control the temperature in the mould inaccurately, and the quality of a casting can be influenced;

secondly, the heater needs manual control and is not intelligent enough in operation.

Disclosure of Invention

In order to solve the problems existing in the prior art, the utility model aims to provide a mold temperature controller. The utility model discloses the inside temperature of control mould that can be accurate can effectively improve the quality of foundry goods, and degree of automation is high.

The utility model relates to a mold temperature controller, which comprises a cabinet, and a control module, an expansion oil tank, an oil supply pump, a heater, a mold loop pipeline and a heat exchanger which are arranged on the cabinet; the mould loop pipeline is used for passing through the mould to regulate the internal temperature of the mould; the heat exchanger comprises a heat conduction oil channel and a cooling water channel which exchange heat with each other;

an oil outlet of the expansion oil tank is sequentially communicated with the oil supply pump, the heater, the mould loop pipeline and the heat conduction oil channel, and the other end of the heat conduction oil channel is communicated with an oil return port of the expansion oil tank to form a heat conduction oil circulation loop;

a water inlet pipeline and a water outlet pipeline are respectively communicated with two ends of the cooling water channel, and an electromagnetic valve is arranged on the water inlet pipeline;

temperature sensors are arranged at two ends of the mould loop pipeline, the heater and an oil return port of the expansion oil tank, the output end of each temperature sensor is electrically connected with the input end of the control module, and the output end of the control module is respectively electrically connected with the heater and the input end of the electromagnetic valve.

Preferably, the mold temperature controller further comprises an exhaust pipeline communicated with the expansion oil tank, an electric exhaust valve is arranged on the exhaust pipeline, and the output end of the control module is electrically connected with the input end of the electric exhaust valve.

Preferably, the mold temperature controller further comprises a funnel-shaped air outlet, and the air outlet is arranged on the side face of the cabinet and communicated with the air exhaust pipeline.

Preferably, the mold temperature controller further comprises a pressure relief pipeline, a pressure sensor and an electric pressure relief valve, wherein one end of the pressure relief pipeline is communicated with the expansion oil tank, and the other end of the pressure relief pipeline is communicated between the expansion oil tank and the oil supply pump; the pressure sensor is arranged between the heat exchanger and the expansion oil tank and used for detecting the oil return pressure of the expansion oil tank, and the electric pressure relief valve is arranged on the pressure relief pipeline; the output end of the pressure sensor is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input end of the electric pressure release valve.

Preferably, ball valves are arranged at two ends of the mould loop pipeline.

Preferably, the control module comprises an MCU.

Preferably, the side of the cabinet is covered with a thermal insulation layer.

Preferably, the cabinet comprises an electrical cabinet and a pipeline cabinet which are detachably connected, the control module is arranged in the electrical cabinet, and the expansion oil tank, the oil supply pump, the heater and the heat exchanger are all arranged in the pipeline cabinet.

A mould temperature machine, its advantage is in, the utility model discloses a set up a plurality of temperature sensor everywhere in conduction oil circulation loop, can effectively monitor everywhere temperature in the conduction oil circulation loop, control module is according to the temperature of temperature signal control heater and solenoid valve in order to regulate and control the conduction oil that gets into the mould, and then regulates and control the inside temperature of mould. The utility model discloses adjust and control the temperature that gets into the conduction oil in the mould according to the real-time temperature everywhere of conduction oil circulation circuit, enable the inside temperature of mould and maintain the default, can realize the accurate control of the inside temperature of mould, can effectively improve foundry goods quality and yield. Meanwhile, the control module realizes automatic feedback regulation and control of the temperature in the loop according to the temperature detection signal, manual operation is not needed in the regulation and control process, and the automatic control system is high in automation degree and more intelligent.

Drawings

Fig. 1 is one of the schematic structural diagrams of a mold temperature controller according to the present invention;

fig. 2 is a second schematic structural diagram of a mold temperature controller according to the present invention;

fig. 3 is a block diagram of a mold temperature controller according to the present invention.

Description of reference numerals: 1-cabinet, 1A-electrical cabinet, 1B-pipeline cabinet, 2-expansion oil tank, 3-oil supply pump, 4-heater, 5-mould loop pipeline, 6-heat exchanger, 7-temperature sensor, 8-water inlet pipeline, 9-water outlet pipeline, 10-electromagnetic valve, 11-exhaust pipeline, 12-electric exhaust valve, 13-exhaust port, 14-pressure relief pipeline, 15-electric pressure relief valve, 16-pressure sensor, 17-ball valve, 18-oil outlet, 19-oil return port, 20-cooling water inlet, 21-cooling water outlet, 22-oil discharge port and 23-mould.

Detailed Description

As shown in fig. 1-3, a mold temperature controller of the present invention comprises a cabinet 1, and a control module, an expansion oil tank 2, an oil supply pump 3, a heater 4, a mold loop pipeline 5 and a heat exchanger 6 which are arranged on the cabinet 1. Specifically, the cabinet 1 is approximately rectangular, and the interior of the cabinet is hollow for arranging various components.

Referring to fig. 3 in detail, the expansion tank 2 is used for storing heat transfer oil. The mold loop conduit 5 passes through the interior of the mold 23 and exchanges heat with the interior of the mold 23 through the side wall of the conduit, thereby regulating the temperature of the interior of the mold 23. The heat exchanger 6 comprises a heat conduction oil channel and a cooling water channel which exchange heat with each other, heat conduction oil in the heat conduction oil channel exchanges heat with cooling water in the cooling water channel through the side wall of the channel during heat exchange, and the cooling water carries away heat of the heat conduction oil, so that the heat conduction oil is cooled.

An oil outlet 18 of the expansion oil tank 2 is sequentially communicated with the oil supply pump 3, the heater 4, the mold loop pipeline 5 and a heat conduction oil channel, and the other end of the heat conduction oil channel is communicated with an oil return port 19 of the expansion oil tank 2 to form a heat conduction oil circulation loop. When the oil supply pump 3 is started, the heat conduction oil flows out from the oil outlet 18 of the expansion oil tank 2, then enters the heater 4 to be heated and heated, exchanges heat with the inside of the die 23 through the die loop pipeline 5, regulates and controls the temperature inside the die 23, then flows into the heat exchanger 6 to exchange heat with cooling water to be cooled, and finally flows back to the expansion oil tank 2 to finish the flow circulation of the heat conduction oil.

The two ends of the cooling water channel are respectively communicated with a water inlet pipeline 8 and a water outlet pipeline 9, cooling water flows into the heat exchanger 6 from the water inlet pipeline 8 to exchange heat with heat conduction oil, then flows out from the water outlet pipeline 9, the electromagnetic valve 10 is arranged on the water inlet pipeline 8, the liquid flow in the water inlet pipeline 8 can be controlled by controlling the electromagnetic valve 10, the water inflow of the cooling water is controlled, the heat exchange quantity of the cooling water and the heat conduction oil is further controlled, and the oil return temperature of the heat conduction oil is indirectly regulated and controlled.

Temperature sensors 7 are respectively arranged at two ends of the mould loop pipeline 5, the heater 4 and the oil return opening 19 of the expansion oil tank 2, as shown in fig. 3, four temperature sensors 7 are arranged in the heat conduction oil circulation loop, output ends of the four temperature sensors 7 are electrically connected with an input end of the control module, and output ends of the control module are respectively electrically connected with the heater 4 and an input end of the electromagnetic valve 10. The four temperature sensors 7 convert the detected temperature into a digital signal which can be identified by the control module and then sent to the control module, and the control module receives the digital signal and controls the operation of the heater 4 and the electromagnetic valve 10 according to the digital signal.

Specifically, the temperatures detected at the two ends of the mold loop pipeline 5 are respectively the temperature before the mold and the temperature after the mold, the temperature detected at the heater 4 is the heating temperature, and the signal detected at the oil return port 19 of the expansion oil tank 2 is the oil return temperature. In actual production, if the temperature index of the die casting is 250 ℃, the temperature before the die should be about 252 ℃ and the temperature after the die should be about 248 ℃ under an ideal state. When both the pre-mold temperature and the post-mold temperature are higher than the above values, it means that the in-mold temperature may be higher than 250 ℃, and at this time, the temperature reduction control is required. The control module controls the heating power of the heater 4 to be reduced, so that the heating temperature is properly reduced, and meanwhile, the flux of the electromagnetic valve 10 can be controlled to be properly increased, so that the flow of cooling water is properly increased, the temperature of heat-conducting oil in a heat-conducting oil circulation loop is reduced, and the temperature in the die is close to the temperature index of a die casting. When the pre-mold temperature and the post-mold temperature are lower than the above values, it means that the in-mold temperature may be lower than 250 c, and temperature rise control is required. The control module controls the heating power of the heater 4 to rise, so that the heating temperature is properly raised, and meanwhile, the flux of the electromagnetic valve 10 can be controlled to be properly reduced, so that the flow of cooling water is properly reduced, the temperature of heat-conducting oil in a heat-conducting oil circulation loop can be raised, and the temperature in the die is close to the temperature index of a die casting. The temperature sensor 7 at the heater 4 can detect the heating temperature of the heater 4 in real time so as to accurately control the heating power of the heater 4. The temperature sensor 7 at the oil return port 19 can detect the oil return temperature in real time so as to accurately control the electromagnetic valve 10 on the water inlet pipeline 8. Through the regulation and control process, the temperature at each position of the heat conduction oil circulation loop can be obtained in real time through the detection of the temperature sensor 7 and fed back to the control module, and the control module controls the operation of the heater 4 and the electromagnetic valve 10 according to the temperature feedback, so that the internal temperature of the mold 23 is maintained at about a temperature index, and the quality of castings can be effectively improved.

The utility model discloses a set up a plurality of temperature sensor 7 everywhere in conduction oil circulation circuit, can effectively monitor everywhere temperature in the conduction oil circulation circuit, control module gets into the temperature of the conduction oil in the mould 23 according to temperature signal control heater 4 and solenoid valve 10 in order to regulate and control, and then regulates and control the inside temperature of mould 23. The utility model discloses adjust and control the temperature that gets into the conduction oil in the mould 23 according to the real-time temperature everywhere of conduction oil circulation circuit, enable the inside temperature of mould 23 and maintain the default, can realize the accurate control of the inside temperature of mould 23, can effectively improve foundry goods quality and yield. Meanwhile, the control module realizes automatic feedback regulation and control of the temperature in the loop according to the temperature detection signal, manual operation is not needed in the regulation and control process, and the automatic control system is high in automation degree and more intelligent.

Further, in this embodiment, the mold temperature controller further includes an exhaust pipe 11 communicated with the expansion oil tank 2, the exhaust pipe 11 is provided with an electric exhaust valve 12, and an output end of the control module is electrically connected with an input end of the electric exhaust valve 12. The exhaust pipeline 11 is used for exhausting air in the expansion oil tank 2 outwards, and the electric exhaust valve 12 can be controlled by the control module to realize automatic exhaust.

Further, in this embodiment, the mold temperature controller further includes a funnel-shaped exhaust port 13, the exhaust port 13 is disposed on the side surface of the cabinet 1, and vertically upward, the funnel-shaped structure can facilitate upward discharge of air. In addition, taking the direction shown in fig. 1 as an example, the exhaust port 13 is arranged on the left side surface of the cabinet 1, and an oil outlet 18 and an oil return port 19 of the expansion oil tank 2, a cooling water inlet 20 of the water inlet pipe 8 and a cooling water outlet 21 of the water outlet pipe 9 are also arranged on the left side surface of the cabinet 1, and an oil drain port 22 of the expansion oil tank 2 is also arranged. All the communication ports are arranged on one side surface in a concentrated mode, and the connecting pipe can be conveniently connected.

Further, in this embodiment, the mold temperature controller further includes a pressure relief pipeline 14, a pressure sensor 16 and an electric pressure relief valve 15, wherein one end of the pressure relief pipeline 14 is communicated with the expansion oil tank 2, the other end of the pressure relief pipeline is communicated between the expansion oil tank 2 and the oil supply pump 3, the pressure sensor 16 is arranged between the heat exchanger 6 and the expansion oil tank 2 and used for detecting the oil return pressure of the expansion oil tank 2, the electric pressure relief valve 15 is arranged on the pressure relief pipeline 14, and the output end of the pressure sensor 16 is electrically connected with the input end of the electric pressure relief valve 15. The pressure sensor 16 detects the oil return pressure of the expansion oil tank 2, converts the oil return pressure into a digital signal and sends the digital signal to the control module, the control module compares the oil return pressure with a preset value, and when the oil return pressure reaches the preset value, the electric pressure release valve 15 is controlled to be opened to release the pressure. Above-mentioned structure can realize automatic pressure release, can effectively protect expansion tank 2, prevents expansion tank 2 excessive pressure.

Further, in this embodiment, ball valves 17 are disposed at two ends of the mold loop pipe 5, and the ball valves 17 can facilitate the control of the on-off of the mold loop pipe 5.

Further, in this embodiment, the control module includes an MCU (micro controller Unit), the MCU has a plurality of input points and output points, is programmable and has a logic operation capability, and when the MCU is applied to this embodiment, the operation of the heater 4 and each of the electric valves can be controlled according to the detection signal of the temperature sensor 7. It should be noted that, the MCU controls the operation of the common actuators such as the electric valve and the heater 4 according to the signal input of the common sensors such as the temperature sensor 7 and the pressure sensor 16, which belongs to the common industrial control method and the conventional technical means of those skilled in the art, and those skilled in the art can select an MCU chip with an appropriate model according to the actual situation and perform wiring according to the chip specification to realize the common control process, and details thereof are not repeated herein.

Furthermore, in this embodiment, the side of the cabinet 1 is covered with a heat insulating layer, and the heat insulating layer is made of heat insulating materials such as glass fiber, rock wool, asbestos, and the like, so that heat dissipation in the cabinet 1 can be effectively prevented, and energy consumption is reduced.

Further, in this embodiment, the cabinet 1 includes an electrical cabinet 1A and a pipeline cabinet 1B that are detachably connected, the control module is disposed in the electrical cabinet 1A, and the expansion oil tank 2, the oil supply pump 3, the heater 4, and the heat exchanger 6 are disposed in the pipeline cabinet 1B. Specifically, the cabinet 1 adopts a split structure, and includes two independent electrical cabinets 1A and a pipeline cabinet 1B. In some preferred embodiments, heat insulation treatment is performed between the electrical cabinet 1A and the pipeline cabinet 1B, and the split structure can effectively protect the circuit structure of the control module in the electrical cabinet 1A, and can prolong the service life of the equipment.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse explanation, these directional terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present application.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures, and it is to be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A mold temperature controller is characterized by comprising a cabinet, and a control module, an expansion oil tank, an oil supply pump, a heater, a mold loop pipeline and a heat exchanger which are arranged on the cabinet; the mould loop pipeline is used for passing through the mould to regulate the internal temperature of the mould; the heat exchanger comprises a heat conduction oil channel and a cooling water channel which exchange heat with each other;

2. The mold temperature controller according to claim 1, further comprising an exhaust pipe communicated with the expansion oil tank, wherein the exhaust pipe is provided with an electric exhaust valve, and an output end of the control module is electrically connected with an input end of the electric exhaust valve.

3. The mold temperature controller of claim 2, further comprising a funnel-shaped exhaust port disposed on a side of the cabinet and communicating with the exhaust duct.

4. The mold temperature controller according to claim 1, further comprising a pressure relief pipeline, a pressure sensor and an electric pressure relief valve, wherein one end of the pressure relief pipeline is communicated with the expansion oil tank, and the other end of the pressure relief pipeline is communicated between the expansion oil tank and the oil supply pump; the pressure sensor is arranged between the heat exchanger and the expansion oil tank and used for detecting the oil return pressure of the expansion oil tank, and the electric pressure relief valve is arranged on the pressure relief pipeline; the output end of the pressure sensor is electrically connected with the input end of the control module, and the output end of the control module is electrically connected with the input end of the electric pressure release valve.

5. The mold temperature machine of claim 1, wherein ball valves are provided at both ends of the mold loop conduit.

6. The mold temperature machine of claim 1, wherein the control module comprises an MCU.

7. The mold temperature machine of claim 1, wherein the sides of the cabinet are covered with a thermally insulating layer.

8. The mold temperature controller according to claim 1, wherein the cabinet comprises an electrical cabinet and a pipeline cabinet which are detachably connected, the control module is arranged in the electrical cabinet, and the expansion oil tank, the oil supply pump, the heater and the heat exchanger are all arranged in the pipeline cabinet.