Automatic temperature control equipment for die-casting die

Abstract

The utility model discloses automatic temperature control equipment for a die-casting die, which is characterized in that a water inlet mechanism is arranged inside a box body and comprises a water inlet main pipeline and a plurality of water inlet branch pipelines communicated with the water inlet main pipeline, and the water inlet branch pipelines are respectively communicated with a plurality of water inlet pipes of a cooling channel in a fixed die or a movable die; the water return mechanism is arranged in the box body and located on one side of the water inlet mechanism, and comprises a plurality of water return branch pipelines and a water return main pipeline communicated with the water return branch pipelines, and the water return branch pipelines are respectively communicated with the plurality of water outlet pipes of the cooling channel in the fixed mold or the movable mold; the temperature adjusting mechanism comprises a flow servo valve, a temperature sensor, a touch screen and a PLC and is used for adjusting the flow of cooling water entering the mold according to temperature information fed back by the temperature sensor. According to the automatic temperature control equipment for the die-casting die, the temperature can be reduced according to the condition of each position of a part, and the solidification time difference of each part of the die-casting part is shortened, so that the shrinkage porosity of a casting is avoided or reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature control of die casting moulds, in particular to automatic temperature control equipment for die casting moulds. Background Art

[0002] Temperature is an extremely important parameter in the die-casting process, including the temperature of the aluminum liquid and the temperature of the mold. The existing technology has relatively stable control over the temperature of the aluminum liquid, while the mold temperature is often affected by the processability of the parts and is more difficult to control; a good temperature balance of the mold is an important guarantee for the quality of die-castings, and is also one of the important conditions for reducing die-casting defects such as shrinkage; the current mold cooling system or mold heating system is open-loop control, with a single function, poor adaptability, and is too mechanical. It cannot adjust the cooling water or heating oil flux in time according to the change of the mold temperature, so there are high requirements for the control accuracy and timeliness of the mold temperature; more importantly, the current mold temperature adjustment requires on-site manual operation, which occupies a lot of human resources. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a device that can automatically control the temperature of a die-casting mold.

[0004] The utility model provides a die-casting mold temperature automatic control device, which is characterized by comprising a box body, a water inlet mechanism, a water return mechanism and a temperature adjustment mechanism; wherein,

[0005] The water inlet mechanism is arranged inside the box body, and includes a water inlet main pipe and a plurality of water inlet branch pipes connected thereto in a communicative manner, wherein the water inlet branch pipes are connected to a plurality of water inlet pipes of the cooling channel in the fixed mold or the movable mold respectively;

[0006] The water return mechanism is arranged inside the box body and located on one side of the water inlet mechanism, and includes a plurality of water return branch pipes and a water return main pipe connected thereto in a communicative manner, and the water return branch pipes are respectively connected to a plurality of water outlet pipes of the cooling channel in the fixed mold or the movable mold;

[0007] The temperature regulating mechanism includes a flow servo valve, a temperature sensor, a touch screen and a PLC controller; wherein,

[0008] The flow servo valve is provided in plurality corresponding to the water inlet branch pipes and is respectively fixedly provided on the corresponding water inlet branch pipes to control the amount of water entering the cooling channel in the fixed mold or the movable mold;

[0009] The temperature sensor is provided in plurality and is respectively provided on the water return mechanism or in the mold to monitor the temperature of the return cooling water or the temperature of the fixed mold or the movable mold itself;

[0010] The touch screen is fixedly arranged on the wall of the box body and is used for displaying and setting parameters;

[0011] The PLC controller is fixedly arranged on the wall surface of the box body, and the flow servo valve, temperature sensor and touch screen are all electrically connected to the PLC controller.

[0012] Preferably, one end of the water inlet main pipe is connected to the external water source pipeline through a water inlet main pipe interface fixed on the side wall of the box body; a plurality of fixed mold water inlet interfaces and a plurality of movable mold water inlet interfaces are fixedly arranged on the back plate of the box body corresponding to the water inlet branch pipes, and one end of the water inlet branch pipe away from the water inlet main pipe is respectively connected to the fixed mold water inlet interface and the movable mold water inlet interface one by one; the fixed mold water inlet interface is connected to the water inlet pipe of the cooling channel on the fixed mold, and the movable mold water inlet interface is connected to the water inlet pipe of the cooling channel on the movable mold.

[0013] Preferably, two groups of return water branch pipes are symmetrically arranged inside the box body; a group of fixed mold return water interfaces and a group of movable mold return water interfaces are respectively fixedly arranged on two symmetrical side panels of the box body; one end of one group of return water branch pipes away from the return water main pipe is connected one by one with the fixed mold return water interface, and the other group of return water branch pipes is connected one by one with the movable mold return water interface at one end away from the return water main pipe; the fixed mold return water interface is connected one by one with the outlet pipe of the cooling channel on the fixed mold, and the movable mold return water interface is connected one by one with the outlet pipe of the cooling channel on the movable mold; one end of the return water main pipe is connected to the external return water pipeline through the return water main pipe interface fixed on the side wall of the box body.

[0014] Preferably, a temperature sensor is fixedly provided on each of the water return branch pipes located inside the box body, for monitoring the temperature of the cooling water inside each of the water return branch pipes.

[0015] Preferably, a group of fixed mold sensor interfaces and a group of dynamic mold sensor interfaces electrically connected to the PLC controller are respectively fixedly disposed on two symmetrical side panels of the box body; the fixed mold sensor interface is connected one by one with the multiple temperature sensors in the fixed mold through a wiring harness, and the dynamic mold sensor interface is connected one by one with the multiple temperature sensors in the dynamic mold through a wiring harness.

[0016] Preferably, a stop valve, a filter, a diaphragm valve, a pressure sensor, a thermometer and an electric contact pressure gauge are fixedly arranged in sequence on the water inlet main pipeline.

[0017] Preferably, a drainage pipe connected to the interior of the box is fixedly provided at the bottom of the box.

[0018] Preferably, movable casters distributed in a rectangular shape are fixedly provided on the bottom surface of the box.

[0019] Preferably, the medium flowing in the water inlet mechanism and the water return mechanism includes but is not limited to cooling water.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The die-casting mold temperature automatic control device of the utility model is connected with multiple water inlet pipes of the cooling channel in the mold through multiple water inlet branch pipelines, and the flow rate of cooling water entering the cooling channel branches in the mold is controlled by respective flow servos on the water inlet branch pipelines, so as to realize multi-circuit water circuit control of the mold temperature, and can reduce the temperature according to the conditions of various positions of the parts, shorten the time difference of solidification of various parts of the die-cast parts, so as to avoid or reduce the shrinkage of the casting; in addition, the temperature sensor, PLC controller and flow servo valve arranged in the equipment cooperate to realize automatic temperature control, get rid of the dependence on manual labor, and reduce work intensity and labor cost.

[0022] The automatic temperature control equipment for die-casting molds only needs to do process verification when trying out the mold in the product development stage to find the most suitable temperature control conditions, store them through the equipment, and enter the mass production stage. There is no need to adjust the cooling water again. Each time the mold is changed, only the corresponding program needs to be called through the touch screen.

[0023] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0024] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 It is a structural schematic diagram of the automatic temperature control equipment for die casting molds from the left side;

[0027] Figure 2 It is a structural schematic diagram of the automatic temperature control equipment for die casting molds from the right side;

[0028] Figure 3 This is a schematic diagram of the structure of the automatic temperature control equipment for die-casting molds from a rear view angle;

[0029] Figure 4 This is a schematic diagram of the internal structure of the die-casting mold temperature automatic control equipment;

[0030] Figure 5 It is a schematic diagram of the relevant structure of the return branch pipeline;

[0031] Numbers in the figure: 1. Box; 2. Water inlet main pipe; 3. Water inlet branch pipe; 4. Water return main pipe; 5. Water return branch pipe; 6. Flow servo valve; 7. Temperature sensor; 8. Touch screen; 9. Water inlet main pipe interface; 10. Fixed mold water inlet interface; 11. Moving mold water inlet interface; 12. Fixed mold water return interface; 13. Moving mold water return interface; 14. Water return main pipe interface; 15. Fixed mold sensor interface; 16. Moving mold sensor interface; 17. Stop valve; 18. Filter; 19. Diaphragm valve; 20. Pressure sensor; 21. Thermometer; 22. Electric contact pressure gauge; 23. Mobile casters. DETAILED DESCRIPTION

[0032] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] Please refer to Figures 1 to 5 The embodiment of the utility model provides a die-casting mold temperature automatic control device, including a box, a water inlet mechanism, a water return mechanism and a temperature adjustment mechanism; wherein,

[0035] The box body 1 has a box door on one side, and the box body is used as a carrier for installing a water inlet mechanism, a water return mechanism and a temperature adjustment mechanism; the bottom surface of the box body 1 is fixedly provided with movable casters 23 distributed in a rectangular shape;

[0036] In addition, the inner bottom surface of the box body 1 is set to a miniature funnel shape, and a drain outlet is set at its lowest point. A drain pipe is fixedly set on the bottom surface of the box body 1. The drain pipe is sealed and connected to the drain outlet to drain the water inside the box body 1.

[0037] The water inlet mechanism is arranged inside the box body 1, and includes a water inlet main pipe 2 and a plurality of water inlet branch pipes 3 connected thereto in a communicating manner, and the water inlet branch pipes 3 are connected to a plurality of water inlet pipes of the cooling channel in the fixed mold or the movable mold respectively;

[0038] In a preferred embodiment, one end of the water inlet main pipe 2 is connected to the external water source pipeline through a water inlet main pipe interface 9 fixed on the side wall of the box body 1; a plurality of fixed mold water inlet interfaces 10 and a plurality of movable mold water inlet interfaces 11 are fixedly arranged on the back plate of the box body 1 corresponding to the water inlet branch pipe 3, and one end of the water inlet branch pipe 3 away from the water inlet main pipe 2 is respectively connected to the fixed mold water inlet interface 10 and the movable mold water inlet interface 11 one by one; the fixed mold water inlet interface 10 is connected to the water inlet pipe of the cooling channel on the fixed mold, and the movable mold water inlet interface 11 is connected to the water inlet pipe of the cooling channel on the movable mold.

[0039] Among them, the water inlet branch pipe 3 is sealed and fixed to the inner port of the fixed mold water inlet interface 10 or the movable mold water inlet interface 11, and the outer port of the fixed mold water inlet interface 10 or the movable mold water inlet interface 11 is sealed and fixedly connected to the water inlet pipe of the cooling channel in the corresponding fixed mold or movable mold. The fixed mold water inlet interface 10 or the movable mold water inlet interface 11 is used as a connection interface between the water inlet pipe of the cooling channel in the fixed mold or the movable mold and the water inlet branch pipe 3, and secondly, one end of the water inlet branch pipe 3 can be fixed to the box body 1 by passing through the fixed mold water inlet interface 10 or the movable mold water inlet interface 11 fixed on the box body 1, thereby improving the stability of the entire water inlet structure after installation;

[0040] Here, the multiple water inlet branch pipe interfaces 3 are divided into two groups according to the cooling channels on the fixed mold and the movable mold in the mold, that is, the multiple water inlet branch pipes 3 are connected to the water inlet pipes of the cooling channels on the corresponding fixed mold or movable mold through the fixed mold water inlet interface 10 and the movable mold water inlet interface 11 respectively;

[0041] That is, cooling water is introduced into the interior of the water inlet main pipe 2, and then enters into each cooling branch of the cooling channel in the mold through multiple water inlet branch pipes 3, and the temperature of different positions on the mold is individually controlled by water return. The mold temperature is controlled by multi-circuit water circuits, and the temperature can be reduced according to the conditions of each position of the part, shortening the time difference of solidification of each part of the die-cast part, so as to avoid or reduce shrinkage of the casting.

[0042] The water return mechanism is arranged inside the box 1 and located on one side of the water inlet mechanism, and includes a plurality of water return branch pipes 5 and a water return main pipe 4 connected thereto in a communicating manner, and the water return branch pipes 5 are respectively connected to a plurality of water outlet pipes of the cooling channel in the fixed mold or the movable mold;

[0043] In a preferred embodiment, two groups of return water branch pipes 5 are symmetrically arranged inside the box body 1; a group of fixed mold return water interfaces 12 and a group of movable mold return water interfaces 13 are respectively fixedly arranged on the two symmetrical side panels of the box body 1; one end of one group of return water branch pipes 5 away from the return water main pipe 4 is connected one-to-one with the fixed mold return water interface 12, and the other end of the other group of return water branch pipes 5 away from the return water main pipe 4 is connected one-to-one with the movable mold return water interface 13; the fixed mold return water interface 12 is connected one-to-one with the outlet pipe of the cooling channel on the fixed mold, and the movable mold return water interface 13 is connected one-to-one with the outlet pipe of the cooling channel on the movable mold; one end of the return water main pipe 4 is connected to the external return water pipeline through the return water main pipe interface 14 fixed on the side wall of the box body 1.

[0044] That is, the two groups of return water branch pipes 5 are respectively sealed and connected to the outlet pipes of the cooling channel on the movable mold and the outlet pipes of the cooling channel on the fixed mold; one end of the return water main pipe 4 is connected to the external return water pipeline through the return water main pipe interface 14 fixed on the side wall of the box body 1, so as to discharge the return water.

[0045] Among them, the medium flowing in the water inlet mechanism and the water return mechanism includes but is not limited to cooling water. When the medium is cooling water, an external chiller device can be used, that is, the water inlet port of the water inlet main pipe 2 is connected to the cooling water outlet pipe of the chiller device, and the water outlet port of the return water main pipe 4 is connected to the water inlet pipe or the return pipe of the chiller device, so as to realize the repeated cooling and utilization of cooling water;

[0046] The medium may also be set as heating oil, which is not limited to cooling the mold only, but may also be a heating system of the mold.

[0047] The temperature regulating mechanism includes a flow servo valve 6, a temperature sensor 7, a touch screen 8 and a PLC controller; wherein,

[0048] A plurality of flow servo valves 6 are provided corresponding to the water inlet branch pipes 3 and are respectively fixedly provided on the corresponding water inlet branch pipes 3 to control the amount of water entering the cooling channel in the mold;

[0049] There are multiple temperature sensors 7, and the installation positions are divided into two types;

[0050] One method is to set them respectively on the return water mechanism. This method is suitable for molds without temperature sensors installed in the molds. The return water temperature of the mold can be monitored by an external temperature sensor 7, thereby adjusting the cooling water flow entering the cooling channel in the mold; this method is that each return water branch pipe 5 located inside the box body 1 is fixedly provided with a temperature sensor 7, which is used to monitor the temperature of the cooling water inside each return water branch pipe.

[0051] The other is that the temperature sensor is set on the lower surface of the cavity in the fixed mold and the movable mold to monitor the temperature of the mold itself (that is, to monitor the temperature of the parts in the mold); in this way, multiple temperature sensors in the mold are electrically connected to the PLC controller through the temperature sensor interface and wiring harness fixed on the side wall of the box body 1, wherein the temperature sensor interface is divided into a fixed mold sensor interface 15 and a movable mold sensor interface 16, which are respectively set on both sides of the box body 1, and are used to connect one by one with the corresponding multiple temperature sensors in the fixed mold and the multiple temperature sensors in the movable mold.

[0052] A touch screen 8 is fixedly arranged on the outer wall of the box body 1 and is used for displaying and setting parameters and performing various operations;

[0053] The PLC controller is fixedly arranged on the outer wall of the box body 1, and the flow servo valve 6, the temperature sensor 7 and the touch screen 8 are all electrically connected to the PLC controller.

[0054] In a preferred embodiment, a stop valve 17, a filter 18, a diaphragm valve 19, a pressure sensor 20, a thermometer 21 and an electric contact pressure gauge 22 are fixedly arranged in sequence on the water inlet main pipeline.

[0055] The working principle of this utility model:

[0056] The principle of the automatic temperature control equipment for die-casting molds is that first, multiple water inlet pipes on the fixed mold and the movable mold are connected one by one with the fixed mold water inlet interface 10 and the movable mold water inlet interface 11 on the box body 1, and multiple water outlet pipes on the fixed mold and the movable mold are connected one by one with the fixed mold return water interface 12 and the movable mold return water interface 13, thereby forming multiple water circuits that pass through the fixed mold and the movable mold separately. The cooling water flow rate of each circuit is realized by controlling the flow servo valve 6 on the corresponding water inlet branch pipe 3 through the PLC controller, thereby achieving the effect of automatically adjusting the mold temperature.

[0057] There are two situations regarding the installation position of the temperature sensor. One is that the temperature sensor is installed in the fixed mold and the movable mold to monitor the temperature of the fixed mold and the movable mold (this situation is not shown in the figure); the other situation is that the temperature sensor 7 is installed on the return branch pipe 5 to monitor the temperature of the return cooling water.

[0058] When the temperature sensors are installed in the fixed mold and the movable mold, the multiple temperature sensors in the fixed mold and the movable mold are respectively connected to the corresponding fixed mold sensor interface 15 and the movable mold sensor interface 16 on the two side panels of the box body 1 through the wiring harness, so that all temperature sensors are electrically connected to the PLC controller; during the operation of the equipment, the mold temperature is detected by the temperature sensor installed in the mold, and the temperature data is fed back to the PLC controller. The PLC controller outputs analog data to the flow servo valve 6 in proportion by comparing the set temperature range. The flow servo valve 6 will open the corresponding amplitude according to the output voltage value of the analog quantity, and provide the mold with a suitable cooling water flow, which can be completely closed at the minimum and 100% open at the maximum, thereby realizing the separate control of the temperature of multiple water circuits;

[0059] When the temperature sensor 7 is set on the return water branch pipe 5, the PLC controller is electrically connected to the temperature sensor 7 on each return water branch pipe 5, and the temperature sensor 7 detects the return water temperature of the corresponding return water branch, and the temperature data is fed back to the PLC controller. The PLC controller compares the set return water temperature range and proportionally outputs analog data to the flow servo valve 6 on the corresponding branch water circuit. The flow servo valve 6 will open the corresponding amplitude according to the output voltage value of the analog quantity to provide the mold with a suitable cooling water flow rate, which can be completely closed at the minimum and 100% open at the maximum, thereby realizing the individual control of the temperature of multiple circuits.

[0060] The use process of the automatic temperature control equipment for die casting molds: After installing the fixed mold and the movable mold, move the equipment to a suitable position; connect the water inlet pipe and the water outlet pipe on the fixed mold and the movable mold to the corresponding fixed mold water inlet interface 10, the movable mold water inlet interface 11 and the fixed mold water return interface 12, the movable mold water return interface 13 on the box body 1 in a one-to-one correspondence. The number of mold water channels can be less than the number of branch pipes of the equipment;

[0061] The equipment is powered on, and during mold preheating, instructions are sent to the PLC controller through the touch screen 8 to control the switch state of each water circuit and the switch state of the flow servo valve 6 corresponding to each circuit.

[0062] When the temperature sensor is installed in the fixed mold and the movable mold, the temperature sensor in the mold can provide real-time feedback of the temperature information of the mold. The equipment is started after the mold is preheated. During production, the PLC controller controls the opening amplitude of the flow servo valve 6 according to the temperature information transmitted by the temperature sensor in the mold, provides the mold with a suitable amount of cooling water, realizes automatic circulation control, and the equipment continues to work while production continues.

[0063] When the temperature sensor 7 is set on the return branch pipe 5, the temperature sensor 7 on the return branch pipe 5 will feed back the return cooling water temperature information inside the return branch pipe 5 in real time; the equipment is started after the mold is preheated, and the cooling water flows quantitatively during production. After the return water is led out of the equipment, the automatic adjustment function of the servo valve corresponding to each circuit is turned on and switched to automatic mode. After receiving the information, the PLC controller controls the opening amplitude of the flow servo valve 6 to provide the mold with a suitable amount of cooling water, thereby realizing automatic circulation control. The equipment continues to work while production continues.

[0064] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0065] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A die casting mold temperature automatic control device, characterized in that: It includes a box body, a water inlet mechanism, a water return mechanism and a temperature adjustment mechanism; wherein, The water inlet mechanism is arranged inside the box body, and includes a water inlet main pipe and a plurality of water inlet branch pipes connected thereto in a communicative manner, wherein the water inlet branch pipes are connected to a plurality of water inlet pipes of the cooling channel in the fixed mold or the movable mold respectively; The water return mechanism is arranged inside the box body and located on one side of the water inlet mechanism, and includes a plurality of water return branch pipes and a water return main pipe connected thereto in a communicative manner, and the water return branch pipes are respectively connected to a plurality of water outlet pipes of the cooling channel in the fixed mold or the movable mold; The temperature regulating mechanism includes a flow servo valve, a temperature sensor, a touch screen and a PLC controller; wherein, The flow servo valve is provided in plurality corresponding to the water inlet branch pipes and is respectively fixedly provided on the corresponding water inlet branch pipes to control the amount of water entering the cooling channel in the fixed mold or the movable mold; The temperature sensor is provided in plurality and is respectively provided on the water return mechanism or in the mold to monitor the temperature of the return cooling water or the temperature of the fixed mold or the movable mold itself; The touch screen is fixedly arranged on the wall of the box body and is used for displaying and setting parameters; The PLC controller is fixedly arranged on the wall surface of the box body, and the flow servo valve, temperature sensor and touch screen are all electrically connected to the PLC controller.

2. The die-casting mold temperature automatic control device according to claim 1, characterized in that: One end of the water inlet main pipe is connected to the external water source pipeline through a water inlet main pipe interface fixed on the side wall of the box body; a plurality of fixed mold water inlet interfaces and a plurality of movable mold water inlet interfaces are fixedly arranged on the back plate of the box body corresponding to the water inlet branch pipes, and one end of the water inlet branch pipe away from the water inlet main pipe is respectively connected to the fixed mold water inlet interface and the movable mold water inlet interface one by one; the fixed mold water inlet interface is connected to the water inlet pipe of the cooling channel on the fixed mold, and the movable mold water inlet interface is connected to the water inlet pipe of the cooling channel on the movable mold.

3. The die-casting mold temperature automatic control device according to claim 1, characterized in that: Two groups of the return water branch pipes are symmetrically arranged inside the box body; a group of fixed mold return water interfaces and a group of movable mold return water interfaces are respectively fixedly arranged on the two symmetrical side panels of the box body; one end of one group of the return water branch pipes away from the return water main pipe is connected one by one with the fixed mold return water interface, and the other group of the return water branch pipes is connected one by one with the movable mold return water interface at one end away from the return water main pipe; the fixed mold return water interface is connected one by one with the outlet pipe of the cooling channel on the fixed mold, and the movable mold return water interface is connected one by one with the outlet pipe of the cooling channel on the movable mold; one end of the return water main pipe is connected to the external return water pipeline through the return water main pipe interface fixed on the side wall of the box body.

4. The die-casting mold temperature automatic control device according to claim 1, characterized in that: A temperature sensor is fixedly provided on each of the water return branch pipes located inside the box body, and is used to monitor the temperature of the cooling water inside each of the water return branch pipes.

5. The die-casting mold temperature automatic control device according to claim 1, characterized in that: A group of fixed mold sensor interfaces and a group of dynamic mold sensor interfaces electrically connected to the PLC controller are respectively fixedly arranged on the two symmetrical side panels of the box body; the fixed mold sensor interface is connected one by one with the multiple temperature sensors in the fixed mold through a wiring harness, and the dynamic mold sensor interface is connected one by one with the multiple temperature sensors in the dynamic mold through a wiring harness.

6. The die-casting mold temperature automatic control device according to claim 1, characterized in that: The water inlet main pipeline is fixedly provided with a stop valve, a filter, a diaphragm valve, a pressure sensor, a thermometer and an electric contact pressure gauge in sequence.

7. The automatic temperature control device for die casting mold according to claim 1, characterized in that: A drainage pipe connected to the interior of the box is fixedly arranged at the bottom of the box.

8. The die-casting mold temperature automatic control device according to claim 1, characterized in that: The bottom surface of the box is fixedly provided with movable casters distributed in a rectangular shape.

9. The die-casting mold temperature automatic control device according to claim 1, characterized in that: The medium flowing in the water inlet mechanism and the water return mechanism includes but is not limited to cooling water.

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