CN211426147U - Durability testing arrangement suitable for mould assembly part - Google Patents
Durability testing arrangement suitable for mould assembly part Download PDFInfo
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- CN211426147U CN211426147U CN201921523286.6U CN201921523286U CN211426147U CN 211426147 U CN211426147 U CN 211426147U CN 201921523286 U CN201921523286 U CN 201921523286U CN 211426147 U CN211426147 U CN 211426147U
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Abstract
The durability testing device suitable for the die assembly part comprises a controller and a testing cavity used for placing the die assembly part, wherein a fluid channel is arranged on the die assembly part; the beneficial technical effects of the utility model reside in that, at first, because durability testing arrangement disposes the heater, control flap and pipeline, they can heat and cool off the mould assembly part respectively, thereby can simulate out the cold and hot alternate real operational environment of mould assembly part lifelikely, thereby can carry out the durability test to the mould assembly part conveniently, thereby the research and development personnel of being convenient for can learn the structure of the optimization mould assembly part that the ability that the mould assembly part resisted cold and hot impact can be timely before the online production, the life of extension mould assembly part.
Description
Technical Field
The present invention relates to a durability testing apparatus, and more particularly, to a durability testing apparatus suitable for a mold assembly.
Background
The cooler is increasingly widely applied to metal casting molds, and has the advantages of high-efficiency cooling, energy conservation and environmental protection, thereby bringing good comprehensive benefits to mold users. The coolers are all provided with a refrigerant channel. In order to form the coolant channel, a groove is directly machined on the cooler base body through a milling tool, and an upper cover plate is welded at the notch position of the groove to form a sealed coolant channel. In the application process of the metal casting mold, the cooler bears repeated and strong cold and heat impact, and the welded joint is cracked when the number of the mold is about 5000-15000 times, so that cooling water is leaked, and normal production work is seriously influenced. In order to solve the above problems, mold designers begin to study the influence of mold and process parameters on the service life of the refrigerant channel, but most of the design is verified through information fed back in mold production application, which is very low in efficiency and high in cost.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a durability testing apparatus, which can simulate a working environment in which a mold assembly, such as the cooler, is alternately changed in cold and hot in actual manufacturing applications, so as to test the durability of the mold assembly.
In view of the above, the present invention provides a durability testing apparatus for a mold assembly, including a controller and a testing chamber for placing the mold assembly, wherein a fluid channel is disposed on the mold assembly, and the apparatus is characterized in that a heater and a temperature sensor are further disposed in the testing chamber, the heater is used for preheating the mold assembly, and the temperature sensor is used for sensing the temperature of the mold assembly and sending a sensing signal to the controller; the device also comprises a conveying pipeline and a recovery pipeline, wherein the conveying pipeline is used for communicating a fluid inlet of the fluid channel and conveying a refrigerant to the fluid channel, the recovery pipeline is used for communicating a fluid outlet of the fluid channel and recovering the refrigerant discharged from the fluid channel, and a control valve is arranged on the conveying pipeline and is used for responding to an instruction sent by the controller to open or close; the controller is used for controlling the heating work of the heater to be started in the preheating stage so that the mold assembly is in a high-temperature state before cooling, controlling the heating work of the heater to be stopped in response to a sensing signal which is transmitted by the temperature sensor and is used for indicating that the mold assembly is in a target high-temperature state, and controlling the control valve to be opened in the cooling stage so that the conveying pipeline can convey a refrigerant to the fluid channel to cool the mold assembly, and controlling the control valve to be closed in response to a sensing signal which is transmitted by the temperature sensor and is used for indicating that the mold assembly is in a target cooling state.
The mold assembly is a component for assembling a mold, and may be a module for forming a cavity or a component provided on the module, such as a cooling device.
The refrigerant may be liquid, or may be a medium capable of absorbing heat, such as gas.
Wherein a test cycle of the mold assembly is configured with a preheating phase and a cooling phase arranged after the preheating phase, the above feature defines that, in a test cycle, the durability testing apparatus preheats the mold assembly first and then performs a cooling process.
The target high-temperature state is a preset temperature state which is preset before testing and is required to be reached by heating the die assembly in the preheating stage. The temperature of the mold assembly at the target elevated temperature state is determined based on the temperature of the mold assembly when in an actual elevated temperature working environment. For example, in a metal casting mold, the temperature of the mold assembly in the target elevated temperature state may be as high as 400-450 °. The target cooling state is preset before testing, and the set temperature state which the mold assembly needs to be cooled to reach in the cooling stage is obtained. The temperature of the mold assembly in the target cooling state is determined based on the temperature of the mold assembly when in the actual cooling operating environment. For example, when a metal casting mold cools a casting after completion of casting, the mold assembly temperature in the target cooling state may be lowered to 250 ° to 300 °.
According to the scheme, the invention has the beneficial technical effects that firstly, the durability testing device is provided with the heater, the control valve and the conveying pipeline, and the heater, the control valve and the conveying pipeline can respectively heat and cool the die assembly part, so that the cold and hot alternating real working environment of the die assembly part can be realistically simulated, the durability test can be conveniently carried out on the die assembly part, research and development personnel can know the cold and hot impact resistance of the die assembly part before online production, the structure of the die assembly part can be timely optimized, and the service life of the die assembly part is prolonged. In addition, the durability testing device is also provided with the temperature sensor, so that the operation of the heater and the control valve can be accurately controlled according to the temperature change condition of the die assembly.
The further technical scheme can also be that the heater is an electromagnetic heating wire group or a heating wire group. Wherein the electromagnetic heating wire group can be used for heating the die assembly relatively quickly, and the heating wire group can be used for heating the die assembly relatively slowly.
The further technical scheme can also be that the device further comprises a heat insulation layer, and the heat insulation layer is used for being placed in the test cavity to prevent heat in the test cavity from being dissipated outwards.
The technical scheme is that the device also comprises a water source providing device and a recovery container, wherein the water source providing device is communicated with the control valve, and the recovery container is communicated with the recovery pipeline.
The further technical scheme can also be that the device further comprises a cooling air source providing device, and the cooling air source providing device is communicated with the control valve.
The control valve comprises a water source connector and a gas source connector, the water source connector is connected with the water source providing device, and the gas source connector is connected with the high-pressure gas source providing device; a drying stage arranged after the cooling stage is further configured in one testing cycle of the mold assembly, the controller is used for controlling to open the water source connecting port of the control valve in the cooling stage, enabling the conveying pipeline to convey a refrigerant to the fluid channel so as to cool the mold assembly, and controlling to close the water source connecting port of the control valve in response to a sensing signal which is transmitted by the temperature sensor and is used for indicating that the mold assembly is in a target cooling state; the controller is also used for opening an air source connecting port of the control valve in the drying stage, so that the conveying pipeline can blow high-pressure air to the fluid channel to dry the fluid channel. According to the technical scheme, after the die assembly part is cooled, high-pressure gas is blown to the fluid channel for drying, so that the refrigerant staying in the fluid channel can be discharged, and the problem that in the process of heating the die assembly part in the next test period, the refrigerant staying in the fluid channel absorbs a large amount of heat to delay the temperature rise of the die assembly part, so that the heating of the die assembly part is uneven, and the simulated high-temperature environment is damaged is avoided.
The further technical scheme can also be that a water level gauge is arranged at the bottom of the test cavity and used for transmitting a water level sensing signal to the controller. Thus, when the fluid passage is broken to leak a specific volume of refrigerant, the water level gauge detects the rise of the water level and transmits a water level sensing signal to the controller.
The water level alarm is used for responding to the instruction of the controller and sending a water level prompt signal. Wherein the water level prompt signal can be a symbol presented by a display, a light signal emitted by a luminous body or a sound emitted by a buzzer. Through the water level prompt signal, a tester can know that the fluid channel is broken, and the test can be stopped.
Since the present invention has the above-described features and advantages, it can be applied to a durability testing apparatus suitable for a mold assembly.
Drawings
Fig. 1 is a schematic perspective view of a first durability testing apparatus 100 suitable for use in a mold assembly according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the first durability testing apparatus 100, and the test cabinet 2 is omitted;
fig. 3 is a schematic structural diagram of a control system of the first endurance testing apparatus 100;
FIG. 4 is a schematic diagram of the second set of endurance testing apparatus.
Detailed Description
The structure of the durability testing apparatus for the mold assembly to which the present invention is applied will be further described with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a first set of endurance testing apparatus 100 suitable for a mold assembly 3 includes a controller 1 and a test cabinet 2. The test cabinet 2 has a test chamber (not shown) for accommodating the mold assembly 3, in which a carrier 21 for carrying the mold assembly 3 is arranged. A fluid channel (not shown) is provided in the mould assembly 3. A heater 4 is arranged in the test chamber, the heater 4 being arranged above the carrier 21 and serving to preheat the mold assembly 3. The heater 4 is an electromagnetic heating wire set by means of which the mold assembly 3 can be warmed up relatively quickly. In other embodiments, the heater 4 may be a heating wire set, and the temperature of the mold assembly 3 may be relatively slowly increased by the heating wire set. A temperature sensor 5 is also arranged in the test cavity, and the temperature sensor 5 is used for sensing the temperature of the die assembly 3 and sending a sensing signal to the controller 1. The heat-insulating layer (not shown in the figure) is arranged in the test cavity and used for preventing heat in the test cavity from being dissipated outwards.
The durability testing device 100 further comprises a conveying pipeline 61 and a recycling pipeline 62, wherein the conveying pipeline 61 is used for communicating with the fluid inlet of the fluid channel and conveying the refrigerant to the fluid channel, and the recycling pipeline 62 is used for communicating with the fluid outlet of the fluid channel and recycling the refrigerant discharged from the fluid channel. A control valve 7 is provided on the delivery pipe 61, and the control valve 7 is configured to open or close in response to a command sent from the controller 1. A water supply device 9 and a recovery container (not shown in the figure) are also included, the water supply device 9 is communicated with the control valve 7, and the recovery container is communicated with the recovery pipeline 62. In other embodiments, the cooling medium may also be cooling gas, and the water source providing device 9 may be modified into a cooling gas source providing device, and the cooling gas source providing device is communicated with the control valve 7. One test cycle of the mould assembly 3 is provided with a preheating phase and a cooling phase arranged after the preheating phase, the controller 1 is used for controlling and starting the heating work of the heater 4 in the preheating stage so that the mold assembly 3 is in a high temperature state before cooling, and controls to stop the heating operation of the heater 4 in response to a sensing signal transmitted from the temperature sensor 5 indicating that the mold assembly 3 is in a target high temperature state, the controller 1 is further configured to control the control valve 7 to open during the cooling stage so that the delivery pipe 61 can deliver a coolant to the fluid channel to cool the mold assembly 3, and controls the control valve 7 to close in response to a sensing signal transmitted by the temperature sensor 5 indicating that the mold assembly 3 is in a target cooling state.
According to the above scheme, firstly, since the durability testing apparatus 100 is provided with the heater 4, the control valve 7 and the conveying pipe 61, which can respectively heat and cool the mold assembly 3, a real working environment of cold and hot alternation of the mold assembly 3 can be realistically simulated, so that a durability test can be conveniently performed on the mold assembly 3, and a research and development staff can know the capability of the mold assembly 3 to resist cold and hot impact before online production so as to timely optimize the structure of the mold assembly 3 and prolong the service life of the mold assembly 3. In addition, since the durability testing apparatus 100 is further provided with the temperature sensor 5, the operation of the heater 4 and the control valve 7 can be accurately controlled according to the temperature change of the mold assembly 3.
Further, a water level meter 8 is arranged at the bottom of the test cavity, and a water level alarm 81 is arranged outside the test cavity. The water level gauge 8 is used to transmit a water level sensing signal to the controller 1. The water level alarm 81 is used for responding to the instruction of the controller 1 and sending a water level prompt signal. Wherein the water level prompt signal can be a symbol presented by a display, a light signal emitted by a luminous body or a sound emitted by a buzzer. Thus, when the fluid passage is broken to leak a specific volume of refrigerant, the water level gauge 8 detects the rise of the water level and transmits a water level sensing signal to the controller 1. The controller 1 sends an instruction to the water level alarm 81 to enable the water level alarm 81 to send a water level prompt signal, and through the water level prompt signal, a tester can know that the fluid channel is broken and stop the test work according to the situation.
The test procedure of the durability test apparatus 100 is described below: before the test is started, the delivery pipe 61 and the recovery pipe 62 are connected to the mold assembly 3 in advance, the temperature sensor 5 is disposed on the mold assembly 3, and then the mold assembly 3 is placed in the rack 21 of the test chamber. Subsequently, the controller 1 controls the heater 4 to be activated for heating. The temperature of the mold assembly 3 is gradually increased while the temperature sensor 5 transmits the temperature of the mold assembly 3 detected by the temperature sensor to the controller 1, and when the temperature of the mold assembly 3 reaches 400 to 450 ℃, the controller 1 stops the heating operation of the heater 4 in response to a sensing signal transmitted from the temperature sensor 5 indicating that the mold assembly 3 is in a target high temperature state. After waiting for a period of time to make the temperature of the entire mold assembly 3 uniform, the controller 1 controls to open the control valve 7 so that the delivery pipe 61 can deliver the coolant to the fluid channel to cool the mold assembly 3. When the temperature of the die assembly 3 is gradually reduced to 250-300 ℃, the controller 1 responds to the sensing signal which is transmitted by the temperature sensor 5 and is used for indicating that the die assembly 3 is in the target cooling state, and controls to close the control valve 7. Thus completing a test cycle. The above work is then repeated for a number of test cycles. Meanwhile, if the water level alarm 81 sends a water level prompt signal, it indicates that the fluid channel is broken and the refrigerant leaks, and the test operation is stopped.
The present invention also proposes a second set of endurance testing devices, similar in structure to the first set of endurance testing devices 100 discussed above, with an emphasis on the main differences between them: as shown in fig. 4, the second durability testing apparatus further includes a water source providing device 9a and a high pressure air source providing device 91a, the control valve 7a includes a water source connection port 71a and an air source connection port 72a, the water source connection port 71a is connected to the water source providing device 9a, and the air source connection port 72a is connected to the high pressure air source providing device 91 a. One test cycle of the mold assembly 3a is configured with a preheating phase, a cooling phase arranged after the preheating phase and a drying phase arranged after the cooling phase. In the cooling stage, the controller 1a controls to open the water source connection port 71a of the control valve 7a, so that the delivery pipe 61a delivers the refrigerant to the fluid channel 30a of the mold assembly 3a to cool the mold assembly 3 a; the controller 1a then controls the water supply connection port 71a of the control valve 7a to be closed in response to a sensing signal transmitted from the temperature sensor 5a indicating that the mold assembly is in the target cooling state. In the drying stage, the controller 1a controls to open the air supply connection port 72a of the control valve 7a, so that the delivery pipe 61a can blow high-pressure air to the fluid channel 30a to dry the fluid channel 30 a. According to the above technical solution, after the mold assembly 3a is cooled, the high-pressure gas is blown to the fluid passage 30a to dry the fluid passage, so as to facilitate discharging the refrigerant staying in the fluid passage 30a, and thus, it is avoided that, in the process of heating the mold assembly 3a in the next test cycle, the refrigerant staying in the fluid passage 30a absorbs a large amount of heat to delay the temperature rise of the mold assembly 3a, and the mold assembly 3a is heated unevenly, so that the simulated high-temperature environment is damaged.
Claims (8)
1. The durability testing device suitable for the die assembly part comprises a controller and a testing cavity used for placing the die assembly part, wherein a fluid channel is arranged on the die assembly part, and the durability testing device is characterized in that a heater and a temperature sensor are also arranged in the testing cavity, the heater is used for preheating the die assembly part, and the temperature sensor is used for sensing the temperature of the die assembly part and sending a sensing signal to the controller; the device also comprises a conveying pipeline and a recovery pipeline, wherein the conveying pipeline is used for communicating a fluid inlet of the fluid channel and conveying a refrigerant to the fluid channel, the recovery pipeline is used for communicating a fluid outlet of the fluid channel and recovering the refrigerant discharged from the fluid channel, and a control valve is arranged on the conveying pipeline and is used for responding to an instruction sent by the controller to open or close; the controller is used for controlling the heating work of the heater to be started in the preheating stage so that the mold assembly is in a high-temperature state before cooling, controlling the heating work of the heater to be stopped in response to a sensing signal which is transmitted by the temperature sensor and is used for indicating that the mold assembly is in a target high-temperature state, and controlling the control valve to be opened in the cooling stage so that the conveying pipeline can convey a refrigerant to the fluid channel to cool the mold assembly, and controlling the control valve to be closed in response to a sensing signal which is transmitted by the temperature sensor and is used for indicating that the mold assembly is in a target cooling state.
2. The durability test apparatus for the mold assembly according to claim 1, wherein the heater is an electromagnetic heating wire group or a heating wire group.
3. The durability test apparatus for the mold assembly according to claim 1, further comprising an insulating layer, wherein the insulating layer is disposed in the test cavity to prevent heat in the test cavity from being dissipated outwards.
4. The durability testing device suitable for the mold assembly part according to any one of claims 1 to 3, further comprising a water source providing device and a recovery container, wherein the water source providing device is communicated with the control valve, and the recovery container is communicated with the recovery pipeline.
5. The durability test device for the mold assembly according to any one of claims 1 to 3, further comprising a cooling air supply device, wherein the cooling air supply device is communicated with the control valve.
6. The durability testing device suitable for the die assembly parts according to any one of claims 1 to 3, further comprising a water source providing device and a high-pressure air source providing device, wherein the control valve comprises a water source connecting port and an air source connecting port, the water source connecting port is connected with the water source providing device, and the air source connecting port is connected with the high-pressure air source providing device; a drying stage arranged after the cooling stage is further configured in one testing cycle of the mold assembly, the controller is used for controlling to open the water source connecting port of the control valve in the cooling stage, enabling the conveying pipeline to convey a refrigerant to the fluid channel so as to cool the mold assembly, and controlling to close the water source connecting port of the control valve in response to a sensing signal which is transmitted by the temperature sensor and is used for indicating that the mold assembly is in a target cooling state; the controller is also used for opening an air source connecting port of the control valve in the drying stage, so that the conveying pipeline can blow high-pressure air to the fluid channel to dry the fluid channel.
7. The durability test device for the mold assembly according to any one of claims 1 to 3, wherein a water level gauge is provided at a bottom position of the test cavity, and the water level gauge is used for transmitting a water level sensing signal to the controller.
8. The apparatus for testing the durability of a mold assembly according to claim 7, further comprising a water level alarm for sending a water level indication signal in response to a command from the controller.
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| CN201921523286.6U CN211426147U (en) | 2019-09-12 | 2019-09-12 | Durability testing arrangement suitable for mould assembly part |
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| CN201921523286.6U CN211426147U (en) | 2019-09-12 | 2019-09-12 | Durability testing arrangement suitable for mould assembly part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455663A (en) * | 2019-09-12 | 2019-11-15 | 佛山市南海奔达模具有限公司 | Device for testing endurance suitable for mold assembly parts |
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- 2019-09-12 CN CN201921523286.6U patent/CN211426147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455663A (en) * | 2019-09-12 | 2019-11-15 | 佛山市南海奔达模具有限公司 | Device for testing endurance suitable for mold assembly parts |
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