Die water pressure testing mechanism

Abstract

The mold water pressure testing mechanism is provided with a circulating water pipe communicated with a mold, the circulating water pipe is communicated with a water flow channel of a fixed seat, one end of the water flow channel of the fixed seat is a water inlet end, and the other end is a water outlet end; the water inlet end is provided with a water inlet pipe; the water inlet pipe is sequentially provided with a pressurizing pump and a water inlet pressure gauge along the water flow direction; the water outlet pipe is sequentially provided with a water outlet pressure gauge, a pressure retaining valve and a pressure release valve in the water flow direction. According to the utility model, the pressure resistance of the mold cavity can be accurately reflected, air tightness and pressure resistance detection are realized, and the quality reliability of the mold is improved; the device is simple in structure, low in manufacturing cost, simple and quick to operate, high in testing precision, strong in adaptability, time-saving and labor-saving in operation, and capable of improving the detection efficiency and greatly saving the production cost and the later maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of physical measurement and testing technology, specifically relating to a mold water pressure testing mechanism. Background Technology

[0002] In the field of mold manufacturing and application, the quality and performance of molds directly determine the precision, quality, and production efficiency of the final product. Molds in molding processes such as injection molding, die casting, and blow molding must withstand high pressure from the internal liquid. This requires molds to have excellent sealing and pressure resistance. If the mold has defects, such as microcracks, pinholes, or poor sealing, under high pressure, it will not only lead to defects in the molded product, such as uneven surfaces, dimensional deviations, and internal porosity, but also result in significant economic losses. Therefore, hydrostatic testing of molds is a crucial step in ensuring mold quality and guaranteeing production safety and product quality. The following technical solution is proposed to address this issue. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a mold hydrostatic testing mechanism to solve the technical problem of testing the sealing and pressure resistance performance of mold cavities.

[0004] The technical solution adopted by this utility model is as follows: a mold water pressure testing mechanism, which has a circulating water pipe connected to the mold, and the circulating water pipe is connected to the water flow channel of the fixed base. One end of the water flow channel of the fixed base is the water inlet end and the other end is the water outlet end. The water inlet end is provided with an inlet pipe and the water outlet end is provided with an outlet pipe. A pressure pump and an inlet pressure gauge are successively provided along the water flow direction of the inlet pipe. An outlet pressure gauge, a pressure holding valve and a pressure relief valve are successively provided along the water flow direction of the outlet pipe.

[0005] In the above technical solution, the preferred embodiment is that the end of the circulating water pipe is connected to the mold and the fixed base by threads, and O-rings are provided at the threaded connections.

[0006] In the above technical solution, the inlet pipe and the outlet pipe are further connected to the fixing base through pipe thread joints.

[0007] In the above technical solution, the preferred option is a G1 / 8 pipe thread connector.

[0008] In the above technical solution, the preferred embodiment is that the water flow channel of the fixed base is an inverted T-shaped channel structure, wherein the vertical end of the T-shaped channel structure is connected to the circulating water pipe, and one end of the horizontal end of the T-shaped channel structure is the water inlet end and the other end is the water outlet end.

[0009] The above technical solution further includes a control system, which has a controller that presets the water pressure of the pressure pump, the pressure holding time of the pressure holding valve, and the pressure relief time of the pressure relief valve.

[0010] Advantages of this utility model compared to the prior art:

[0011] 1. This utility model can accurately reflect the pressure resistance performance of the mold cavity, realize airtightness and pressure resistance testing, and improve the reliability of mold quality.

[0012] 2. This utility model can monitor the pressure resistance of the mold cavity in real time, promptly detect problems in individual cavities, and avoid affecting product quality.

[0013] 3. This utility model can achieve efficient and accurate testing of the pressure resistance of mold channels, provide detailed testing results for complex mold flow channels, and achieve stable performance, thereby reducing testing costs and improving testing efficiency.

[0014] 4. The pressure pump of this utility model provides water power. After the pressure holding valve is closed, it continuously pressurizes the mold cavity until the pressure holding value is reached. Observe whether the pressure gauge drops to determine whether there are defects in the mold cavity. The pressure value of the pressure holding valve can be adjusted according to different mold tests to meet diverse testing needs.

[0015] 5. This utility model has a simple structure, low manufacturing cost, simple and quick operation, high testing accuracy, strong adaptability, saves time and effort in operation, improves testing efficiency, and greatly saves production costs and subsequent maintenance costs. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention in use;

[0017] In the diagram: 1-Mold, 2-Circulating water pipe, 3-Fixed base, 4-Inlet pipe, 5-Outlet pipe, 6-Pressure pump, 7-Inlet pressure gauge, 8-Outlet pressure gauge, 9-Pressure holding valve, 10-Pressure relief valve, 11-O-ring seal, 12-Pipe threaded connector. Detailed Implementation

[0018] The following will refer to the appendix in the embodiments of this utility model. Figure 1 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] A mold water pressure testing mechanism has a circulating water pipe 2 connected to a mold 1, and the circulating water pipe 2 is connected to the water flow channel of a fixed base 3.

[0020] It should be noted that the design of the circulating water pipe 2 allows for continuous water circulation between the mold 1 and the fixed base 3, facilitating continuous monitoring and control of water pressure during testing, thereby improving the accuracy and efficiency of the test. The circulating water flow can more effectively simulate the cooling conditions of the mold during actual production, thus more accurately evaluating the mold's cooling performance and water circuit sealing. The fixed base 3, as a support and connecting component for the water flow channel, simplifies the installation and disassembly process of the testing mechanism, making testing operations more convenient. The connection design between the circulating water pipe 2 and the fixed base 3 reduces additional connecting components and piping, lowers operational complexity, and improves testing efficiency. The use of the circulating water pipe 2, through optimized water flow channel design, can reduce energy consumption and improve energy utilization efficiency. The connection design between the circulating water pipe 2 and the fixed base 3 has a certain degree of versatility and adaptability, making it suitable for water pressure testing of molds of different specifications and types.

[0021] In the above embodiments, preferably, the end of the circulating water pipe 2 is connected to the mold 1 and the fixed base 3 by threads, and O-rings 11 are provided at the threaded connections.

[0022] It should be noted that threaded connections achieve their connection through the interlocking of internal and external threads, offering high reliability and preventing loosening. This connection method can withstand significant tensile and shear forces, ensuring stability and safety at the connection point during testing. Threaded connections can be connected and disassembled simply by rotation, requiring no complex tools or operations. This allows for rapid mold changes or test mechanism adjustments during testing, improving efficiency. The relatively fixed tightening method of threaded connections prevents loosening over long-term use. When repeated hydrostatic testing is required, simply retighten the threaded connection; no changes to the connection method or additional sealing material are needed. O-rings 11 are commonly used sealing elements. Their unique circular cross-section design provides excellent sealing performance, further ensuring the seal at the connection and preventing water leakage during testing. O-rings 11 are suitable for pipe connections of various materials and shapes, including metals and plastics. This allows the test mechanism to adapt to molds / 1 and mounting bases 3 of different materials and specifications, improving the versatility and flexibility of the test. The O-ring 11 is very easy to install; simply slip it onto the threaded connection. This reduces installation difficulty and cost, while also improving the reliability and stability of the testing mechanism. During testing, if wear or aging is observed in the O-ring 11, it can be quickly replaced without disassembling the entire testing mechanism, reducing maintenance costs and time, and extending the service life of the testing mechanism.

[0023] Based on this, one end of the water flow channel of the fixed base 3 is a water inlet end, and the other end is a water outlet end; the water inlet end is provided with a water inlet pipe 4, and the water outlet end is provided with a water outlet pipe 5. In the above embodiment, furthermore, the water inlet pipe 4 and the water outlet pipe 5 are respectively connected to the fixed base 3 through a pipe thread connector 12.

[0024] It should be noted that the pipe threaded connector 12, through the tight fit of its internal and external threads, achieves a secure and quick connection between the inlet pipe 4 and the outlet pipe 5 and the fixed base 3. This connection method is not prone to loosening, can withstand greater water flow pressure, and ensures safety and stability during the testing process. The pipe threaded connector 12 is usually equipped with sealing materials (such as O-rings) at the connection point to further enhance sealing performance, helping to prevent water leakage during testing and ensuring the accuracy and reliability of the test. The installation process of the pipe threaded connector 12 is relatively simple; simply align the threaded ends of the inlet pipe 4 and the outlet pipe 5 with the corresponding threaded holes of the fixed base 3 and tighten them by rotation. This reduces installation difficulty and cost, and improves the assembly efficiency of the testing mechanism. During the testing process, if wear, aging, or leakage is found in the pipe threaded connector 12 or related components, it can be quickly replaced or repaired, making maintenance more convenient and helping to extend the service life of the testing mechanism. The pipe threaded connector 12 is available in various specifications and sizes to accommodate inlet pipes 4 and outlet pipes 5 of different diameters and materials, allowing the testing mechanism to be flexibly applied to mold hydrostatic testing scenarios of different scales. As a standard connecting component, the pipe thread fitting 12 has good compatibility and can be used with different brands and models of piping systems, improving the versatility and flexibility of the testing agency.

[0025] In the above embodiments, preferably, the pipe thread connector 12 is a G1 / 8 pipe thread connector. G1 / 8 pipe thread connectors have a high degree of standardization and stronger compatibility, helping to reduce installation problems caused by specification mismatches and improving the assembly efficiency and accuracy of the testing mechanism. The installation and disassembly process of G1 / 8 pipe thread connectors becomes simple and quick, the connection is stable and reliable, the sealing performance is better, and it has wide applicability.

[0026] Based on this, the inlet pipe 4 is equipped with a pressure pump 6 and an inlet pressure gauge 7 in sequence along the water flow direction; the outlet pipe 5 is equipped with an outlet pressure gauge 8, a pressure holding valve 9 and a pressure relief valve 10 in sequence along the water flow direction.

[0027] It should be noted that: The pressure pump 6 provides the required water pressure for the test. By adjusting the output pressure of the pressure pump, the water pressure during the test can be precisely controlled, avoiding test errors caused by insufficient or excessive pressure. The inlet pressure gauge 7 monitors the water pressure in the inlet pipe 4 in real time. By reading the gauge value, the real-time pressure situation during the test can be understood, allowing for timely detection and adjustment of pressure deviations to ensure the test pressure remains within the preset range. The outlet pressure gauge 8 monitors the water pressure in the outlet pipe 5. By comparing the values ​​of the inlet and outlet pressure gauges 7 and 8, the pressure loss during the test can be understood, assessing the mold's sealing performance and pressure-bearing capacity, providing a basis for subsequent test analysis and improvement. The pressure holding valve 9 maintains a constant water pressure during the test. When the test pressure reaches the preset value, the pressure holding valve 9 automatically closes to prevent further pressure increases and avoid test errors caused by pressure fluctuations. The pressure relief valve 10 is used to quickly release the water pressure in the pipeline after the test or in case of abnormal conditions. By opening the pressure relief valve 10, the pressure in the pipeline can be reduced quickly, avoiding equipment damage or safety accidents caused by excessive pressure, improving the safety of the testing organization, and helping to protect the safety of testing personnel and equipment.

[0028] In the above embodiments, preferably, the water flow channel of the fixed base 3 is an inverted T-shaped channel structure, wherein the vertical end of the T-shaped channel structure is connected to the circulating water pipe 2, and one end of the horizontal end of the T-shaped channel structure is the water inlet end and the other end is the water outlet end.

[0029] It should be noted that the T-shaped channel structure of the fixed base 3 is compact and space-saving, with a clear water flow path that is easy to control. This facilitates precise control of water flow speed and pressure during the test, improving the accuracy and reliability of the test. The T-shaped channel structure of the fixed base 3 optimizes the water flow path, reducing water resistance and flow time within the fixed base 3. This contributes to improved test efficiency, shorter test cycles, and lower test costs. The T-shaped channel structure of the fixed base 3 is relatively simple, without excessive bends or branches, making maintenance and cleaning easier. After the test, residues and dirt inside the channel can be removed with simple rinsing and wiping, keeping the channel clear and clean. The T-shaped channel structure design offers flexibility, adapting to the hydrostatic testing needs of molds of different specifications and sizes.

[0030] In the above embodiments, it is further included as a control system, which has a controller that presets the water pressure of the pressure pump 6, the pressure holding time of the pressure holding valve 9, and the pressure relief time of the pressure relief valve 10.

[0031] It should be noted that the controller can precisely set the output water pressure of the pressure pump 6, ensuring stable water pressure during the test and meeting the test requirements. This helps to evaluate the sealing performance and pressure-bearing capacity of the mold under different pressure conditions. The controller can preset the holding time of the pressure holding valve 9, which is the period of time during the test to maintain a constant water pressure. By precisely controlling the holding time, the performance of the mold under continuous pressure in a real-world environment can be simulated, further evaluating its reliability and durability. The controller can also preset the pressure relief time of the pressure relief valve 10, which is the time to quickly release the water pressure in the pipeline after the test or in case of abnormal situations. Precise pressure relief time control helps protect the test equipment and mold from damage caused by excessive pressure, while ensuring the safety and stability of the test process. By preset test parameters, the control system can achieve automated testing without human intervention, reducing the possibility of human error. Automated testing improves testing efficiency, shortens the test cycle, and reduces testing costs. The control system is usually equipped with a data logging function, which can record key parameters such as water pressure, holding time, and pressure relief time in real time during the test. This data can be used for subsequent analysis and evaluation, providing strong support for mold improvement and optimization. The control system features multiple safety protection measures, such as overvoltage protection and leakage protection. When abnormal situations occur during testing, the control system can respond quickly and take measures to protect the safety of the testing equipment and mold. By precisely controlling test parameters and automating the testing process, the control system ensures the stability and consistency of the testing process, which helps reduce the volatility of test results and improve the accuracy and reliability of the tests.

[0032] The working principle of this utility model includes the following steps:

[0033] Step 1, Installation Preparation: Connect one end of the circulating water pipe 2 to the mold 1 through a thread, connect the other end of the circulating water pipe 2 to the fixed base 3 through a thread, connect the inlet pipe 4 to the inlet end of the fixed base 3 through the pipe thread connector 12, and connect the outlet pipe 5 to the outlet end of the fixed base 3 through the pipe thread connector 12.

[0034] Step 2: Set parameters: Set the test parameters in the controller of the control system. Preset the water pressure of the pressure pump 6, the pressure holding time of the pressure holding valve 9, and the pressure relief time of the pressure relief valve 10 through the controller.

[0035] Step 3, Water pressure test: Start the pressure pump 6 to send water from the water tank into the cavity of mold 1 through the water inlet pipe 4 until water flows out from the water outlet pipe 5. Then quickly close the pressure holding valve 9 and start the pressure pump 6 to continuously pressurize the cavity of mold 1 until the pressure values ​​of the water inlet pressure gauge 7 and the water outlet pressure gauge 8 reach the pressure holding set value, then turn off the pressure pump 6.

[0036] Step 4, Result Judgment: Observe the pressure values ​​of the inlet pressure gauge 7 and the outlet pressure gauge 8 during the pressure holding time to determine whether there is a problem with water leakage, seepage, or insufficient pressure resistance in the water circuit of mold 1 cavity. If there is an abnormality in the water circuit of mold 1 cavity, the pressure values ​​of the inlet pressure gauge 7 and the outlet pressure gauge 8 will inevitably drop when the pressure holding time reaches the set pressure value. At this time, it can be determined that there is a problem with the pipeline cavity of mold 1, which needs to be repaired or adjusted.

[0037] Step 5, pressure relief and dismantling: After the test is completed, the pressure relief valve 10 will automatically open in time at the set time to drain and relieve pressure; disconnect the connection between the circulating water pipe 2 and the mold 1 to complete the test.

[0038] It should be noted that when testing water pressure, the following protective measures should be selected: a pressure pump 6, an inlet pressure gauge 7, an outlet pressure gauge 8, a pressure holding valve 9, an inlet pipe 4, and an outlet pipe 5, all with a pressure value greater than that of the mold being tested 1. Personnel safety should be ensured, and necessary safe operating procedures and warning signs should be provided to prevent accidents.

[0039] As can be seen from the above description, because the internal water channels of mold 1 are intricate and intertwined, this utility model enables the individual inspection of the water channels in the cavity of mold 1, accurately reflects the pressure resistance performance of the cavity of mold 1, realizes airtightness and pressure resistance testing, and improves the reliability of mold quality.

[0040] This invention can monitor the pressure resistance of the cavity under test in mold 1 in real time, promptly detect problems in individual cavities, and avoid affecting product quality.

[0041] The high-precision inlet pressure gauge 7 and outlet pressure gauge 8 of this invention can monitor and display the pressure resistance value of the mold 1 channel, achieving efficient, accurate, and real-time detection of the pressure resistance value; the detection results of the complex flow channel of the mold 1 are detailed and the performance is stable, reducing detection costs, improving detection efficiency, and providing reliable and accurate data for testing.

[0042] The pressure pump 6 of this utility model provides water power. After the pressure holding valve 9 is closed, it continuously increases the pressure of the cavity of the mold 1 until the pressure holding value is reached. The pressure drop of the two pressure gauges is observed to determine whether there is a defect in the cavity of the mold 1. The pressure value of the pressure holding valve 9 can be adjusted according to different molds 1 to meet diverse testing needs.

[0043] This utility model has a simple structure, low manufacturing cost, simple and quick operation, high testing accuracy, strong adaptability, saves time and effort in operation, improves testing efficiency, and greatly saves production costs and subsequent maintenance costs.

[0044] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications and equivalent substitutions made within the spirit and principles of the present utility model are included within the scope of protection of the present utility model.

Claims

1. A mold hydrostatic testing mechanism, characterized in that: It has a circulating water pipe (2) connected to the mold (1), the circulating water pipe (2) is connected to the water flow channel of the fixed seat (3), one end of the water flow channel of the fixed seat (3) is the water inlet end and the other end is the water outlet end; the water inlet end is provided with a water inlet pipe (4), and the water outlet end is provided with a water outlet pipe (5); the water inlet pipe (4) is provided with a pressure pump (6) and a water inlet pressure gauge (7) in sequence along the water flow direction; the water outlet pipe (5) is provided with a water outlet pressure gauge (8), a pressure holding valve (9) and a pressure relief valve (10) in sequence along the water flow direction.

2. The mold hydrostatic testing mechanism according to claim 1, characterized in that: The end of the circulating water pipe (2) is connected to the mold (1) and the fixed seat (3) by threads, and O-rings (11) are provided at the threaded connection.

3. The mold hydrostatic testing mechanism according to claim 1 or 2, characterized in that: The inlet pipe (4) and outlet pipe (5) are respectively connected to the fixing base (3) through the pipe thread joint (12).

4. The mold hydrostatic testing mechanism according to claim 3, characterized in that: The pipe threaded connector (12) is a G1 / 8 pipe threaded connector.

5. The mold hydrostatic testing mechanism according to claim 3, characterized in that: The water flow channel of the fixed base (3) is an inverted T-shaped channel structure, wherein the vertical end of the T-shaped channel structure is connected to the circulating water pipe (2), and one end of the horizontal end of the T-shaped channel structure is the water inlet end and the other end is the water outlet end.

6. The mold hydrostatic testing mechanism according to claim 1, characterized in that: It also includes a control system, which has a controller that presets the water pressure of the pressurizing pump (6), the pressure holding time of the pressure holding valve (9), and the pressure relief time of the pressure relief valve (10).

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