A device and method for detecting fracture of a point core of an ultra-large mold

Abstract

The present application relates to a kind of super large mold point cold core fracture detection device and method, the device includes point cooling machine, point cooling valve station and die casting mold, point cooling machine is connected with point cooling valve station by water supply line and gas supply line, water supply line and gas supply line are connected after being gathered in point cooling valve station, and the input end of same die water supply blow pipe line is jointly connected, water supply line and gas supply line are located between point cooling machine and point cooling valve station, die water supply blow pipe line is between point cooling valve station and die casting mold, and the input end of corresponding mold point cold shunt in die casting mold is connected with the output end of die water supply blow pipe line, die casting mold is installed with several mold point cold shunts, and each mold point cold shunt is connected with several point cooling pipes.The present application has low cost and is easy to promote and use, can be simply and quickly disassembled and connected with corresponding pipeline, and can detect general slight leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of mold spot cooling core detection, in particular to a device and method for detecting fracture of a super-large mold spot cooling core. Background Art

[0002] Existing molds are equipped with a corresponding return flow and pressure sensor for each spot cooling pipe. This return flow / pressure sensor can detect flow, pressure, or both. Many molds, especially large and extra-large ones, have numerous spot cooling pipes, potentially dozens. If a return flow and pressure sensor were required for each spot cooling pipe, a significant number of sensors would be required. These sensors are very expensive, with well-known brands costing thousands to tens of thousands of yuan each. This results in a prohibitively high cost for the large number of return flow and pressure sensors alone, significantly limiting the widespread adoption of spot cooling pipe break detection.

[0003] Furthermore, to detect spot cooling pipe breaks, existing molds require a separate water inlet and outlet line between the water source and the mold for each spot cooling core. This means each spot cooling core requires a corresponding water inlet and outlet line, which are connected to form a single spot cooling line. This connection method, when used in molds with a large number of spot cooling cores, requires the spot cooling line to be removed and installed when switching from the water source to the die-casting machine and then to the mold. This makes the removal and installation of the lines very tedious and time-consuming, increasing mold switching time and impacting production efficiency.

[0004] Finally, many current mold spot cooling pipe inspections use water flow detection, also known as flow-type detection. However, the inner diameter of the spot cooling pipe is often only a few millimeters. When the water supply pressure is 1Mpa, the water flow rate is only 1-2L / min, and the cooling time of the spot cooling pipe is usually limited to 10-30 seconds. This means that in actual applications, due to the very small water flow rate of the spot cooling pipe and the current detection accuracy of the return water flow pressure sensor, it is often only possible to detect the flow change when the water flow rate changes significantly in the case of a complete break or a very large break in the spot cooling pipe, and then determine that the spot cooling pipe is broken. However, it is difficult to detect general minor leaks such as cracks, minor damage, and interface leakage in the spot cooling pipe, resulting in the failure of the spot cooling pipe inspection. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, one of the objectives of the present invention is to provide a device for detecting fracture of a super-large mold spot cooling core, which can solve the problems of high cost, complex connection and difficulty in detecting minor leakage in many existing mold spot cooling pipe fracture detection systems.

[0006] A second object of the present invention is to provide a method for detecting fractures in spot-cooling cores of ultra-large molds, which can solve the problems of high cost, complex connections, and difficulty in detecting minor leakage in existing spot-cooling pipe fracture detection systems for molds.

[0007] The technical solution for achieving one of the purposes of the present invention is: a device for detecting fracture of a super large mold spot cooling core, comprising a spot cooling machine, a spot cooling valve station and a die casting mold,

[0008] The spot cooling machine is connected to the spot cooling valve station through the water supply pipeline and the air supply pipeline. The water supply pipeline and the air supply pipeline are connected together inside the spot cooling valve station and then connected to the input end of the same mold water supply and air blowing pipeline. The water supply pipeline and the air supply pipeline are both located between the spot cooling machine and the spot cooling valve station. The mold water supply and air blowing pipeline is between the spot cooling valve station and the die-casting mold.

[0009] The output end of the mold water supply and air blowing pipeline is connected to the input end of the corresponding mold spot cooling diverter in the die casting mold. Several mold spot cooling diverters are installed in the die casting mold. Each mold spot cooling diverter is connected to several spot cooling pipes. The spot cooling core is installed on the spot cooling pipe. The water flow after cooling the spot cooling core is discharged to the outside from the spot cooling valve station.

[0010] The pipelines connected in sequence, namely, the spot cooling valve station, the mold water supply and air blowing pipeline, the mold spot cooling diverter, the spot cooling pipe, the mold spot cooling diverter, the mold return water pipeline and the spot cooling valve station, are the spot cooling pipelines.

[0011] A return water pressure sensor is installed on the spot cooling pipeline. The return water pressure sensor is located in the spot cooling valve station.

[0012] The return water pressure sensor is used to measure the gas pressure of the spot cooling pipeline when the gas in the spot cooling pipeline is in a pressure-maintaining state. The gas pressure serves as the basis for detecting whether the spot cooling pipeline is broken.

[0013] Furthermore, the spot cooler is externally or internally provided with a water source and an air source, the water source is connected to the water supply pipeline, and the air source is connected to the air supply pipeline.

[0014] Furthermore, a spot cooler control system is installed in the spot cooler, and a water tank, a water pump and a water supply pressure sensor are installed on the pipeline between the water source and the water supply pipeline. The water tank, water pump and water supply pressure sensor are located in the spot cooler, and the water pump and the water supply pressure sensor are electrically connected to the spot cooler control system respectively. The spot cooler control system is used to control the water pump output power according to the water flow pressure measured by the water supply pressure sensor, so that water is supplied to the water supply pipeline at a constant pressure.

[0015] Furthermore, a two-position, two-way normally closed solenoid valve for water supply is installed on the pipeline between the water supply pressure sensor and the water supply pipeline, and the two-position, two-way normally closed solenoid valve for water supply is located in the spot cooler.

[0016] Furthermore, a gas supply pressure sensor and a two-position, two-way normally closed gas supply solenoid valve are installed on the pipeline between the gas source and the gas supply pipeline, and a two-position, two-way normally open gas return solenoid valve is also installed on the pipeline connected to the return water pressure sensor in the spot cooling valve station.

[0017] Furthermore, the spot cooling pipeline being in the pressure maintaining state means that the water supply two-position two-normally closed solenoid valve, the return water two-position two-normally open solenoid valve and the air supply two-position two-normally closed solenoid valve are all in a closed state.

[0018] Furthermore, a one-way valve is installed on each pipeline before the water supply pipeline and the air supply pipeline are connected together inside the spot cooling valve station to connect to the same mold water supply and air blowing pipeline. The one-way valve is used to allow water flow and air flow to flow to the mold water supply and air blowing pipeline in only one direction.

[0019] Furthermore, it also includes a return water collector, which is connected to the output end of the spot cooling valve station so that the water discharged from the spot cooling valve station flows into the recovery collector. A float valve is also installed in the water tank in the spot cooling machine. The float valve is connected to the water source, and the water source supplies water to the water tank through the float valve. The float valve is used to control the liquid level in the water tank to maintain the water volume in the water tank within a preset range.

[0020] The technical solution for achieving the second purpose of the present invention is: a method for detecting fracture of a spot-cooling core of an ultra-large mold, comprising the following steps:

[0021] Step 1: The water pump supplies water in the water tank to the water input end of the spot cooling valve station through the water supply pipeline. The output end of the spot cooling valve station supplies water through the mold water supply and air blowing pipeline. The output end of the mold water supply and air blowing pipeline discharges water to the spot cooling pipe and cools the spot cooling core in the spot cooling pipe. The cooled water flows from the spot cooling pipe return pipe connected to the output end of the spot cooling pipe to the return end of the mold spot cooling diverter. The water flows from the mold return pipe connected to the output end of the mold spot cooling diverter to the spot cooling valve station, and finally flows back to the return water collector through the return pipe.

[0022] Among them, the spot cooling machine adjusts the water flow output by the water pump according to the water flow pressure measured by the water supply pressure sensor to maintain constant pressure to supply water to the spot cooling pipe;

[0023] Step 2: After the return water flows to the return water collector for a period of time, close the two-position two-normally closed solenoid valve for water supply, and simultaneously open the two-position two-normally closed solenoid valve for air supply. The air source blows air to the spot cooling pipe through the mold water supply and air blowing pipeline. The gas completely drains the water flow on the spot cooling pipeline into the return water collector. The spot cooling pipeline includes a pipeline consisting of a one-way valve, a mold water supply and air blowing pipeline, a mold spot cooling diverter, a spot cooling pipe water inlet pipeline, a spot cooling pipe, a spot cooling pipe return pipeline, a mold spot cooling diverter, a mold return pipeline and a return water pressure sensor, which are connected in sequence.

[0024] Step 3: Before the air blowing to the spot cooling pipe is finished, close the return water two-position two-way normally open solenoid valve, so that the spot cooling pipeline between the one-way valve and the return water pressure sensor is in a closed and pressurized state;

[0025] Step 4: After the air blowing is completed, close the air supply two-position two-normally closed solenoid valve, and the spot cooling pipeline between the one-way valve and the return water pressure sensor is in a closed pressure-maintaining state. After the pressure is maintained for a period of time, the spot cooling pipeline rupture condition is judged based on the current pressure of the spot cooling pipeline measured by the return water pressure sensor.

[0026] Furthermore, if the current pressure of the spot cooling pipeline is lower than 0.1 MPa, it is determined that the spot cooling core is broken; if the current pressure is between 0.1-0.4 MPa, it is determined that the spot cooling pipeline is leaking or the spot cooling core is cracked.

[0027] The beneficial effects of the present invention are as follows: in the present invention, by setting a plurality of mold spot cooling diverters in the die-casting mold, the mold spot cooling diverter is only provided with one input end and one output end, and each mold spot cooling diverter can be connected to multiple spot cooling cores, thereby avoiding the need for each spot cooling core to be connected to an external water source or air source through a pipeline. When switching is required, it is only necessary to disconnect the pipeline connection between the spot cooling valve station and the mold spot cooling diverter. Compared with the existing connection method, disassembly and installation are simpler and faster. Accordingly, one mold spot cooling diverter corresponds to one spot cooling pipeline, and only one return water pressure sensor needs to be installed on each spot cooling pipeline, which greatly reduces the number of return water flow pressure sensors, saves costs, and is more conducive to the promotion and application of the fracture detection function of the super-large mold spot cooling core. In addition, the spot cooling pipeline is closed, pressurized and maintained, so that the gas in the spot cooling pipeline is kept in a non-flowing static state, making the pressure value of the spot cooling pipeline detected by the return water pressure sensor more stable and accurate. Even if the spot cooling pipeline or the interface of the spot cooling pipeline has a slight fracture or crack, or a slight air leakage, a slight change in pressure in the spot cooling pipeline can be detected, thereby realizing fracture detection under general leakage conditions, which is not possible with conventional molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] In the figure, 1. Spot cooling machine; 11. Water source; 12. Compressed air source; 13. Spot cooling machine control system; 14. Float valve; 15. Water tank; 16. Water pump; 171. Air supply pressure sensor; 172. Water supply pressure sensor; 181. Air supply 2-position 2-position normally closed solenoid valve; 182. Water supply 2-position 2-position normally closed solenoid valve; 2. Spot cooling machine-valve station connecting pipe and cable; 21. Water supply pipeline; 22. Air blowing pipeline; 23. Communication cable; 3. Spot cooling valve station; 31. Wiring Box; 32. Return water two-position two-way normally open solenoid valve; 33. Return water pressure sensor; 34. One-way valve; 4. Valve station-mold connecting pipeline; 41. Mold return water pipeline; 42. Mold water supply and air blowing pipeline; 5. Die-casting mold; 51. Mold slider; 52. Mold spot cooling core; 53. Mold spot cooling diverter; 541. Spot cooling pipe water inlet pipeline; 542. Spot cooling pipe return pipeline; 55. Spot cooling pipe; 6. Return water system; 61. Return water pipeline; 62. Return water collector. Specific implementation plan

[0030] Below, with reference to the accompanying drawings and specific embodiments, the present invention will be further described:

[0031] like Figure 1As shown, a device for detecting fractures in a super-large mold spot-cooling core comprises a spot-cooling machine 1, a spot-cooling valve station 3, and a mold spot-cooling core 5. The spot-cooling machine 1 and the mold spot-cooling core 5 are each connected to the spot-cooling valve station 3 via corresponding pipelines. The spot-cooling machine 1 has a built-in or external water source 11 and air source 12. The spot-cooling machine 1 inputs water and air into the spot-cooling valve station 3, which then circulates to the mold spot-cooling core 5. The water and air then pass through the spot-cooling core 52 within the mold spot-cooling core 5, then flow out of the mold spot-cooling core 5 and back into the spot-cooling valve station 3. The water and air flowing back out of the spot-cooling valve station 3 are finally input into a collector connected to the spot-cooling valve station 3, thus completing a complete water and air flow path.

[0032] The spot chiller 1 includes a spot chiller control system 13, a water tank 15 connected to a water source 11, a water pump 16, a water supply pressure sensor 172, an air supply pressure sensor 171, a two-position, two-way normally closed water supply solenoid valve 182, and a two-position, two-way normally closed air supply solenoid valve 181. The water pump 16 is connected directly or via a pipeline to the input of a water supply pipeline 21. The output of the water supply pipeline 21 is connected to the water input of the spot chiller valve station 3. The water supply pipeline 21 is located between the spot chiller 1 and the spot chiller valve station 3. A water supply pressure sensor 172 and a two-position, two-way normally closed water supply solenoid valve 182 are installed on the pipeline between the water pump 16 and the water supply pipeline 21. The water supply pressure sensor 172 is used to detect the current water pressure output from the water pump 16, and the two-position, two-way normally closed water supply solenoid valve 182 is used to start and stop the water pump 16 from supplying water to the water supply pipeline 21. The air source 12 is connected to the input end of the air blowing pipeline 22 through a pipeline, and the output end of the air blowing pipeline 22 is connected to the air flow input end of the spot cooling valve station 3. The air blowing pipeline 22 is between the spot cooling machine 1 and the spot cooling valve station 3. An air supply pressure sensor 171 and a two-position, two-normally closed air supply solenoid valve 181 are installed on the pipeline between the water source 11 and the air blowing pipeline 22. The air supply pressure sensor 171 is used to detect the gas pressure output by the current air source 12 to the air supply pipeline, and the two-position, two-normally closed air supply solenoid valve 181 is used to open and close the air supply from the air source 12 to the air supply pipeline.

[0033] Among them, the water pump 16 and the water supply pressure sensor 172 are both electrically connected to the spot chiller control system 13. The spot chiller control system 13 adjusts the water flow output by the water pump 16 according to the water supply pressure uploaded by the water supply pressure sensor 172, thereby ensuring constant pressure water supply to the water supply pipeline 21.

[0034] The water flow input end and the air flow input end are converged into the same pipeline inside the spot cooling valve station 3 and then connected to the mold water supply and air blowing pipeline 42, wherein the water flow input end and the air flow input end are each installed with a one-way valve 34 on their respective pipelines before being converged into the same pipeline, so that only water flow and air flow are allowed to flow in the direction of the mold water supply and air blowing pipeline 42, the mold water supply and air blowing pipeline 42 is connected to the input end of the mold spot cooling diverter 53 built into the mold spot cooling core 5, the mold spot cooling diverter 53 is provided with multiple output ends, each output end is connected to the input end of the spot cooling pipe 55 through a corresponding spot cooling pipe water inlet pipeline 541, a spot cooling core 52 is provided in the spot cooling pipe 55, and the spot cooling core 52 is fixedly installed in the die-casting mold through the mold slider 51. The mold spot-cooling diverter 53 is provided with multiple return ends, with the same number of return ends as output ends. Each return end is connected to the output end of the spot-cooling pipe 55 via a corresponding spot-cooling return water pipeline 61. The output of the mold spot-cooling diverter 53 is connected to the return input end of the spot-cooling valve station 3 via the mold return water pipeline 41. The return input end is connected to the return output end via the return water pipeline inside the spot-cooling valve station 3. A return water two-position two-way normally open solenoid valve 32 and a return water pressure sensor 33 are installed on the return water pipeline. The return water output end is connected to the return water collector 62 via the return water pipeline 61. The return water two-position two-way normally open solenoid valve 32 is used to open and close the return water output end to drain water to the return water collector 62. The return water pressure sensor 33 is used to measure the current water pressure flowing from the return water input end to the return water output end. The return water collector 62 is used to collect the discharged water.

[0035] The return water 2-position, 2-way normally open solenoid valve 32 and the return water pressure sensor 33 are connected via cables to a junction box 31 built into the spot cooling valve station 3, and then electrically connected to the spot cooling machine control system 13 via a communication cable 23. The current water pressure data measured by the return water pressure sensor 33 is uploaded to the spot cooling machine control system 13 in real time. The spot cooling machine control system 13 then controls the opening and closing of the return water 2-position, 2-way normally open solenoid valve 32 based on the water pressure.

[0036] At least two spot cooling tubes 55 are connected to the same mold spot cooling manifold 53. The maximum number of spot cooling tubes 55 that can be connected to a mold spot cooling manifold 53 is the number of output ports and return ports. For example, if there are two output ports and two corresponding return ports, then a maximum of two spot cooling tubes 55 can be connected. Figure 1In the example, a mold spot-cooling diverter 53 is connected to two spot-cooling pipes 55. Specifically, the input ends of two adjacent spot-cooling pipes 55 are connected to the output end of the mold spot-cooling diverter 53 via a spot-cooling pipe inlet line 541, and the output ends are connected to the return end of the mold spot-cooling diverter 53 via a spot-cooling pipe return line 542. All water and air returning from the spot-cooling pipes 55 are discharged from the mold return line 41 connected to the output end of the mold spot-cooling diverter 53. Multiple mold spot-cooling diverters 53 can be installed in the mold spot-cooling core 5. The number of mold spot-cooling diverters 53 is determined by the number of spot-cooling cores 52 in the mold spot-cooling core 5.

[0037] The water supply pipeline 21, air blowing pipeline 22, and communication cable 23 form the spot cooling machine-valve station connecting pipe 2, which establishes the electrical and piping connection between the spot cooling machine 1 and the spot cooling valve station 3. The mold return water pipeline 41 and the mold water supply and air blowing pipeline 42 form the valve station-mold connecting pipeline 4, establishing the piping connection between the spot cooling valve station 3 and the mold spot cooling core 5. The return water pipeline 61 and the return water collector 62 form the return water system 6.

[0038] In an optional embodiment, a float valve 14 is also installed in the water tank 15 in the spot cooler 1. The float valve 14 is connected to the water source 11. The water source 11 supplies water to the water tank 15 through the float valve 14. The float valve 14 is used to control the liquid level in the water tank 15 and maintain the water volume in the water tank 15 within an appropriate range.

[0039] Based on the above device, a method for detecting fracture of a spot-cooling core of an ultra-large mold is also provided, comprising the following steps:

[0040] Step 1: The water pump 16 supplies water in the water tank 15 to the water flow input end of the spot cooling valve station 3 through the water supply pipe 21. The output end of the spot cooling valve station 3 supplies water through the mold water supply and air blowing pipe 42. The output end of the mold water supply and air blowing pipe 42 discharges water to the spot cooling pipe 55 and cools the spot cooling core 52 in the spot cooling pipe 55. The cooled water is discharged from the spot cooling pipe return pipe 542 connected to the output end of the spot cooling pipe 55 to the reflux end of the mold spot cooling diverter 53. The water flows back to the spot cooling valve station 3 from the mold return pipe 41 connected to the output end of the mold spot cooling diverter 53, and finally flows back to the return water collector 62 through the return pipe 61.

[0041] The spot cooling machine 1 adjusts the water flow output by the water pump 16 according to the water flow pressure measured by the water supply pressure sensor 172 to maintain a constant pressure to supply water to the spot cooling pipe 55 .

[0042] In this step, the water supply two-position two-normally closed solenoid valve 182 is in the open state.

[0043] Step 2: After the return water flows to the return water collector 62 for a period of time, the water supply two-position two-normally closed solenoid valve 182 is closed, and the air supply two-position two-normally closed solenoid valve 181 is opened synchronously. The air source 12 blows air to the spot cooling pipe 55 through the mold water supply and air blowing pipeline 42. The gas completely drains the water flow on the spot cooling pipeline into the return water collector 62. The spot cooling pipeline includes a pipeline composed of a one-way valve 34, a mold water supply and air blowing pipeline 42, a mold spot cooling diverter 53, a spot cooling pipe water inlet pipeline 541, a spot cooling pipe 55, a spot cooling pipe return pipeline 542, a mold spot cooling diverter 53, a mold return water pipeline 41 and a return water pressure sensor 33, which are connected in sequence.

[0044] Step 3: Before the air blowing to the spot cooling pipe 55 is completed, for example, when the air blowing is about to end, close the return water two-position two-way normally open solenoid valve 32, so that the spot cooling pipeline between the one-way valve 34 and the return water pressure sensor 33 is in a closed and pressurized state;

[0045] Step 4: After the air blowing is completed, the air supply two-position two-normally closed solenoid valve 181 is closed, and the spot cooling line between the one-way valve 34 and the return water pressure sensor 33 is closed and pressure maintained. After the pressure is maintained for a period of time (e.g., 5 seconds), the spot cooling line rupture is determined based on the current pressure in the spot cooling line measured by the return water pressure sensor 33. If the current pressure in the spot cooling line is less than 0.1 MPa, it can be determined that the spot cooling core 52 is broken and an alarm is issued. If the current pressure is between 0.1-0.4 MPa, it is determined that the spot cooling line is leaking or the spot cooling core 52 is cracked. In this case, the spot cooling line leakage is a minor rupture, and only a small amount of gas can escape.

[0046] By performing the above steps, it is possible to complete the detection of whether the spot cooling core 52 is broken and whether the spot cooling pipeline is leaking.

[0047] In the present invention, a plurality of mold spot cooling diverters 53 are arranged in the mold spot cooling core 5, and the mold spot cooling diverter 53 is only provided with one input end and one output end. Each mold spot cooling diverter 53 can be connected to a plurality of spot cooling cores 52, thereby avoiding the need for each spot cooling core 52 to be connected to the external water source 11 or air source 12 through a pipeline. When switching is required, it is only necessary to disconnect the pipeline connection between the spot cooling valve station 3 and the mold spot cooling diverter 53. Compared with the existing connection method, disassembly and installation are simpler and faster.

[0048] Correspondingly, one mold spot cooling diverter 53 corresponds to one spot cooling pipeline, and only one return water pressure sensor 33 needs to be installed on each spot cooling pipeline, which greatly reduces the number of return water flow pressure sensors, saves costs, and is more conducive to the promotion and application of the mold spot cooling core 52 fracture detection function.

[0049] In addition, the spot cooling pipeline is closed, pressurized and maintained, so that the gas in the spot cooling pipeline remains in a non-flowing static state, so that the pressure value of the spot cooling pipeline detected by the return water pressure sensor 33 is more stable and accurate. Even if the spot cooling pipeline or the interface of the spot cooling pipeline has a slight fracture or crack, or a slight air leakage, a slight change in pressure in the spot cooling pipeline can be detected, thereby realizing fracture detection under general leakage conditions, which is not possible with conventional molds.

[0050] The embodiment disclosed in this specification is merely an illustration of one aspect of the present invention. The scope of protection of the present invention is not limited to this embodiment. Any other functionally equivalent embodiments fall within the scope of protection of the present invention. Those skilled in the art can make various other corresponding changes and modifications based on the technical solutions and concepts described above, and all such changes and modifications should fall within the scope of protection of the claims of the present invention.

Claims

1. A device for detecting fracture of a super large mold spot cooling core, characterized in that: Including spot cooling machine, spot cooling valve station and die casting mold, The spot cooling machine is connected to the spot cooling valve station through the water supply pipeline and the air supply pipeline. The water supply pipeline and the air supply pipeline are connected together inside the spot cooling valve station and then connected to the input end of the same mold water supply and air blowing pipeline. The water supply pipeline and the air supply pipeline are both located between the spot cooling machine and the spot cooling valve station. The mold water supply and air blowing pipeline is between the spot cooling valve station and the die-casting mold. The output end of the mold water supply and air blowing pipeline is connected to the input end of the corresponding mold spot cooling diverter in the die casting mold. Several mold spot cooling diverters are installed in the die casting mold. Each mold spot cooling diverter is connected to several spot cooling pipes. The spot cooling core is installed on the spot cooling pipe. The water flow after cooling the spot cooling core is discharged to the outside from the spot cooling valve station. The pipelines connected in sequence include the spot cooling valve station, the mold water supply and air blowing pipeline, the mold spot cooling diverter, the spot cooling pipe, the mold spot cooling diverter, the mold return water pipeline and the spot cooling valve station are the spot cooling pipelines. A return water pressure sensor is installed on the spot cooling pipeline. The return water pressure sensor is located on the return flow pipeline in the spot cooling valve station. The return water pressure sensor is used to measure the gas pressure of the spot cooling pipeline when the gas in the spot cooling pipeline is in a pressure-maintaining state. The gas pressure serves as the basis for detecting whether the spot cooling pipeline is broken.

2. The super large mold spot cooling core fracture detection device according to claim 1, characterized in that: The spot cooling machine is externally or internally provided with a water source and an air source, the water source is communicated with the water supply pipeline, and the air source is communicated with the air supply pipeline.

3. The super large mold spot cooling core fracture detection device according to claim 1, characterized in that: A spot cooler control system is installed in the spot cooler. A water tank, a water pump and a water supply pressure sensor are installed on the pipeline between the water source and the water supply pipeline. The water tank, water pump and water supply pressure sensor are located inside the spot cooler. The water pump and the water supply pressure sensor are electrically connected to the spot cooler control system respectively. The spot cooler control system is used to control the water pump output power according to the water flow pressure measured by the water supply pressure sensor, so that water is supplied to the water supply pipeline at a constant pressure.

4. The super large mold spot cooling core fracture detection device according to claim 3, characterized in that: A two-position, two-way normally closed solenoid valve for water supply is also installed on the pipeline between the water supply pressure sensor and the water supply pipeline. The two-position, two-way normally closed solenoid valve for water supply is located in the spot cooler.

5. The device for detecting fracture of a super large mold spot cooling core according to claim 4, characterized in that: A gas supply pressure sensor and a two-position, two-way normally closed gas supply solenoid valve are installed on the pipeline between the gas source and the gas supply pipeline. A two-position, two-way normally open gas return solenoid valve is also installed on the pipeline connected to the return water pressure sensor in the spot cooling valve station.

6. The device for detecting fracture of a super large mold spot cooling core according to claim 5, characterized in that: The point cooling pipeline being in the pressure maintaining state means that the water supply two-position two-normally closed solenoid valve, the return water two-position two-normally open solenoid valve and the air supply two-position two-normally closed solenoid valve are all in a closed state.

7. The device for detecting fracture of a super large mold spot cooling core according to claim 6, characterized in that: A one-way valve is installed on each pipeline before the water supply pipeline and the air supply pipeline are connected together inside the spot cooling valve station to connect to the same mold water supply and air blowing pipeline. The one-way valve is used to allow water flow and air flow to flow to the mold water supply and air blowing pipeline in only one direction.

8. The device for detecting fracture of a super large mold spot cooling core according to claim 7, characterized in that: It also includes a return water collector, which is connected to the output end of the spot cooling valve station so that the water discharged from the spot cooling valve station flows into the recovery collector. A float valve is also installed in the water tank in the spot cooling machine. The float valve is connected to the water source, and the water source supplies water to the water tank through the float valve. The float valve is used to control the liquid level in the water tank to maintain the water volume in the water tank within a preset range.

9. A method for detecting fracture of a super large mold spot cooling core, characterized in that: Applicable to the device for detecting fracture of a super-large mold spot-cooling core as claimed in any one of claims 5 to 8, the detection method comprises the following steps: Step 1: The water pump supplies water in the water tank to the water input end of the spot cooling valve station through the water supply pipeline. The output end of the spot cooling valve station supplies water through the mold water supply and air blowing pipeline. The output end of the mold water supply and air blowing pipeline discharges water to the spot cooling pipe and cools the spot cooling core in the spot cooling pipe. The cooled water flows from the spot cooling pipe return pipe connected to the output end of the spot cooling pipe to the return end of the mold spot cooling diverter. The water flows from the mold return pipe connected to the output end of the mold spot cooling diverter to the spot cooling valve station, and finally flows back to the return water collector through the return pipe. Among them, the spot cooling machine adjusts the water flow output by the water pump according to the water flow pressure measured by the water supply pressure sensor to maintain constant pressure to supply water to the spot cooling pipe; Step 2: After the return water flows to the return water collector for a period of time, close the two-position two-normally closed solenoid valve for water supply, and simultaneously open the two-position two-normally closed solenoid valve for air supply. The air source blows air to the spot cooling pipe through the mold water supply and air blowing pipeline. The gas completely drains the water flow on the spot cooling pipeline into the return water collector. The spot cooling pipeline includes a pipeline consisting of a one-way valve, a mold water supply and air blowing pipeline, a mold spot cooling diverter, a spot cooling pipe water inlet pipeline, a spot cooling pipe, a spot cooling pipe return pipeline, a mold spot cooling diverter, a mold return pipeline and a return water pressure sensor, which are connected in sequence. The return water pressure sensor is located on the return pipeline in the spot cooling valve station. Step 3: Before the air blowing to the spot cooling pipe is finished, close the return water two-position two-way normally open solenoid valve, so that the spot cooling pipeline between the one-way valve and the return water pressure sensor is in a closed and pressurized state; Step 4: After the air blowing is completed, close the air supply two-position two-normally closed solenoid valve, and the spot cooling pipeline between the one-way valve and the return water pressure sensor is in a closed pressure-maintaining state. After the pressure is maintained for a period of time, the spot cooling pipeline rupture condition is judged based on the current pressure of the spot cooling pipeline measured by the return water pressure sensor.

10. The method for detecting fracture of a super large mold spot cooling core according to claim 9, characterized in that: If the current pressure of the spot cooling pipeline is lower than 0.1Mpa, it is judged that the spot cooling core is broken. If the current pressure is between 0.1-0.4Mpa, it is judged that the spot cooling pipeline is leaking or the spot cooling core is cracked.

Images