Injection mold testing device and testing method
By introducing a sealing shell, a humidity sensor and an alarm into the injection mold testing device, water leakage problems at the mold water channel port can be automatically identified, solving the water leakage problem that is difficult for the human eye to observe in the existing technology, and achieving efficient and accurate water channel testing.
Patent Information
- Application Number
- CN202511022078.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-24
- Publication Date
- 2025-10-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In existing injection mold water channel testing, gaps are prone to appear at the connection between the connecting valve and the water channel port, causing water leakage, which increases the difficulty of observation and interferes with test results.
An injection mold testing device was designed, which includes a sealing shell, a humidity sensor, and an alarm. The sealing shell contacts and seals the outer wall of the mold. The humidity sensor detects humidity changes inside the sealing shell. The alarm sounds when the humidity exceeds a threshold, automatically identifying the leak point. A compression shell and a rotating block system are used to keep the sealing shell dry, thereby improving the sensitivity of the alarm.
The leak point can be identified without human observation, which reduces the difficulty of observation, improves the accuracy and efficiency of the test, and ensures the reliability of the test results.
Smart Images
Figure CN120760948A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of injection mold testing, and in particular to an injection mold testing device and a testing method. Background Art
[0002] In the current injection mold production process, in order to ensure that the injection mold has good heat dissipation, the injection mold needs to be tested for water channels before leaving the factory. Currently, mold water channel sealing testing equipment is usually connected to the water channel port on the mold with a connecting valve. Then, a booster pump is used to pressurize the test medium (water + dye) into the corresponding test water channel. Under the boosting effect of the booster pump, the water channel pressure is increased to the sealing test pressure. The booster valve is then closed to maintain the pressure in the test water channel. The rotation of the pressure gauge pointer is used to confirm whether the test water channel has pressure relief.
[0003] However, the existing injection mold water channel testing still has the following shortcomings. For example, during the test of the injection mold water channel, if there is a gap at the connection between the connecting valve and the water channel port, the injection mold water channel port is prone to leakage, thereby interfering with the test results. Therefore, during the test, it is necessary to observe with human eyes whether there is leakage at the connection. However, since the mold has multiple water channel ports and they are distributed on both sides of the mold, the observation difficulty is increased.
[0004] To this end, the present invention proposes an injection mold testing device and a testing method to solve the above problems. Summary of the Invention
[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection mold testing device, comprising: A connecting pipe, one end of which is sealed and rotatably connected to a sealing valve adapted to the mold water channel port, and the other end of the connecting pipe is connected to the water channel of an external water pump; A pressure gauge, used to detect the pressure in the waterway; A sealing shell, the sealing shell slides on the surface of the connecting pipe; a pushing and adjusting assembly, wherein the pushing and adjusting assembly is used to push the sealing shell so that the sealing shell approaches the outer wall of the mold and contacts the outer wall of the mold; A mounting shell, the mounting shell being fixedly connected to the outer wall of the top end of the sealing shell, wherein a humidity sensor is provided in the mounting shell, and the humidity sensor is used to detect humidity parameters in the sealing shell; The alarm is installed on the top of the outer wall of the installation shell and is electrically connected to the humidity sensor. When the humidity in the sealed shell exceeds the threshold, the alarm sounds an alarm. Preferably, the push adjustment component includes: A compression shell, wherein the compression shell is slidably sleeved on the surface of the connecting pipe, the end of the sealing shell is slidably connected in the compression shell, and a spring is fixedly connected between the sealing shell and the compression shell; The rotating block is threadedly connected to the surface of the connecting pipe and is rotatably connected to the outer side wall of the end portion of the compression shell.
[0006] Preferably, it also includes: An annular sealing ring, the annular sealing ring is fixedly connected to the end of the sealing shell, and the annular sealing ring is slidably sealed in the compression shell; an air intake branch, the air intake branch being used to inhale dry gas into the compression shell; an exhaust branch, the exhaust branch being used to discharge the dry gas into the sealed shell; An exhaust hole is provided on the outer wall of the mounting shell; A connecting rod is fixedly connected to the outer wall of the compression shell at a position corresponding to the exhaust hole, and a sealing block is fixedly connected to the end of the connecting rod.
[0007] Preferably, the air intake branch includes: Two drying cylinders, the drying cylinders are symmetrically fixedly connected to the outer wall of the compression shell, and the bottom ends of the drying cylinders pass through the inner wall of the compression shell; The sealing cover is threadedly connected to the top of the drying cylinder. The top of the sealing cover is fixedly connected to an air intake pipe. A first one-way valve is provided in the air intake pipe. The first one-way valve opens when the sealing shell is away from the compression shell to allow outside air to enter the compression shell.
[0008] Preferably, the exhaust branch includes an exhaust hose, one end of which is fixedly connected to the compression shell, and the other end is fixedly connected to the sealing shell. A second one-way valve is provided in the exhaust hose, and the second one-way valve opens when the sealing shell is close to the compression shell to allow the dry gas in the compression shell to enter the sealing shell.
[0009] Preferably, the sealing shell has a funnel section and an annular section, the bottom end of the annular section is fixedly connected to a drain pipe, and the bottom end of the drain pipe is provided with a drain valve.
[0010] Preferably, a hydrophobic layer is provided on the inner wall of the sealing shell.
[0011] Preferably, an annular sealing strip is fixedly connected to the end of the annular segment.
[0012] To solve the above problems, the present invention further proposes an injection mold testing method, comprising: S1: Wrap the sealing tape around the sealing valve, and then connect the sealing valve to the water outlet and water inlet of the mold water channel in sequence to form a circulating water channel; S2: Start the push adjustment component to move the sealing shell toward the outer wall of the mold and make contact with the outer wall of the mold; S3: Detect and record the current humidity parameters in the sealed shell through the humidity sensor as the initial humidity; S4: Start the external water pump to inject water into the mold water channel. Under the boosting effect of the external water pump, the water channel pressure is increased to the sealing test pressure, and then the boosting valve is closed to maintain the pressure in the test water channel; S5: If the alarm at the corresponding position sounds an alarm, drain the water in the corresponding waterway, then remove the sealing valve at the corresponding position, rewind the sealing tape, and then reconnect it to the waterway port until the alarm does not sound an alarm during the test: S6: After completing the water circuit test, drain the water in the mold water circuit through an external water pump. First, push the adjustment component to move the sealing shell away from the outer wall of the mold, and then remove the sealing valve.
[0013] It should be noted that the specific usage of the push adjustment components in S2 and S6 include: S201: rotating the rotating block, causing the compression shell to move under the action of the threaded connection, and causing the sealing shell to approach the mold and contact the outer wall of the mold under the connection action of the spring; S202: After the sealing shell contacts the mold, the compression shell continues to move, the spring is compressed, and the pressure inside the compression shell increases, causing the dry gas inside the compression shell to pass through the exhaust branch and be discharged into the sealing shell, thereby reducing the air humidity inside the sealing shell; S203: After the test is completed, the rotating block is rotated to move the compression shell away from the sealing shell, so that the pressure inside the compression shell is reduced, and the external gas is sucked into the compression chamber through the suction branch, and the sucked air is dried by the drying cylinder.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a sealing shell, a humidity sensor and an alarm, and seals the water channel port of the mold through the sealing shell. If the water channel port leaks, the leaked water will enter the sealing shell, thereby causing the humidity parameter in the sealed shell to increase. The humidity sensor detects that when the humidity exceeds the threshold, the alarm sounds an alarm, eliminating the need for human visual observation to determine whether the water channel port is leaking, thereby reducing measurement difficulty.
[0015] Secondly, the present application sets the compression shell and the rotating block, after the sealing shell contacts with the mold, the compression shell continues to move, the spring is compressed, the air in the compression shell is extruded through the annular sealing ring, the pressure in the compression shell is increased, the dry gas in the compression shell is discharged into the sealing shell through the discharge branch, and then is discharged through the exhaust hole, so that the initial parameter of the air humidity in the sealing shell is reduced, and the humidity in the sealing shell is quickly increased when the waterway port leaks, thereby improving the sensitivity of the alarm.
[0016] Thirdly, the present application sets the funnel section drain pipe, when the leaked water enters the sealing shell, the water is drained through the inclined surface of the funnel section, so that the leaked water enters the annular section and enters the drain pipe, after the test is completed or the sealing valve needs to be connected with the waterway again, the drain valve at the drain pipe is opened to direct the water in the sealing shell. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 for the overall structure of the present application Figure 1 ; Figure 2 for Figure 2 the enlarged view of A in FIG. 1; Figure 3 for the overall structure of the present application Figure 2 ; Figure 4 for Figure 3 the enlarged view of B in FIG. 2; Figure 5 for the overall structure of the present application Figure 6 for Figure 5 the enlarged view of C in FIG. 3; Figure 7 for the overall structure of the present application Figure 8 for the overall structure of the present application
[0018] In the figure: connecting pipe 1, sealing valve 2, sealing shell 3, mounting shell 4, exhaust hole 5, humidity sensor 6, alarm 7, compression shell 8, spring 9, rotating block 10, annular sealing ring 11, connecting rod 12, sealing block 13, drying cylinder 14, sealing cover 15, air suction pipe 16, first one-way valve 17, exhaust hose 18, second one-way valve 19, annular sealing strip 20, drain pipe 21, drain valve 22, pressure gauge 23. DETAILED DESCRIPTION
[0019] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only as examples, and those skilled in the art can think of other obvious modifications.
[0020] like Figures 1 to 6 An injection mold testing device is shown, comprising: Connecting pipe 1, one end of which is sealed and rotatably connected to a sealing valve 2 adapted to the water channel port of the mold, and the other end of the connecting pipe 1 is connected to the water channel of an external water pump; Pressure gauge 23, pressure gauge 23 is used to detect the pressure in the water channel; The sealing shell 3 slides on the surface of the connecting pipe 1; Pushing the adjustment component, the pushing adjustment component is used to push the sealing shell 3 so that the sealing shell 3 is close to the outer wall of the mold and contacts the outer wall of the mold; The mounting shell 4 is fixedly connected to the outer wall of the top of the sealing shell 3. A humidity sensor 6 is provided in the mounting shell 4. The humidity sensor 6 is used to detect the humidity parameters in the sealing shell 3; Alarm 7, which is arranged at the top of the outer wall of the mounting shell 4 and is electrically connected to the humidity sensor 6. When the humidity in the sealed shell 3 exceeds a threshold, the alarm 7 sounds an alarm; Specifically, in the prior art, during the test of the injection mold water channel, if there is a gap at the connection between the connecting valve and the water channel port, the injection mold water channel port is prone to leakage, thereby interfering with the test results. Therefore, during the test, it is necessary to observe whether there is leakage at the connection with the human eye. However, since the mold has multiple water channel ports and they are distributed on both sides of the mold, the observation is more difficult. The present technical solution can solve the above problem. The specific operation is as follows: First, wrap the sealing tape around the sealing valve 2, then connect the sealing valve 2 to the water outlet and water inlet of the mold water channel in sequence to form a circulating water channel. Then start the push adjustment component to move the sealing shell 3 toward the outer wall of the mold and make contact with the outer wall of the mold to seal the water channel port and reduce the impact of the external environment on the humidity inside the sealing shell 3. Then, the humidity sensor 6 detects and records the current humidity parameter in the sealed shell 3 as the initial humidity; Start the external water pump to inject water into the mold water channel. Under the boosting effect of the external water pump, increase the water channel pressure to the sealing test pressure, and then close the boost valve to maintain the pressure in the test water channel; During the test, if water leaks from the waterway port at one or more locations, the leaked water will enter the sealed shell 3, causing the humidity parameter in the sealed shell 3 to increase. When the humidity exceeds a threshold (for example, the humidity parameter increases by more than 15% of the initial value), the alarm 7 sounds an alarm. Then, the water in the water channel at the corresponding position is drained through an external water pump, and then the sealing valve 2 at the corresponding position is removed, the sealing tape is rewound, and then the sealing valve 2 is reconnected to the water channel port until the alarm 7 does not sound during the test process, thereby ensuring that the sealing valve 2 is sealed and connected to the mold port to avoid interference with the test results; After completing the above preparations, increase the water channel pressure to the sealing test pressure again, and then confirm whether the test water channel has pressure relief by observing the movement of the pointer of the pressure gauge 23, thereby detecting whether the mold water channel has leakage; After completing the water circuit test, drain the water in the mold water circuit through an external water pump, then push the adjustment component to move the sealing shell 3 away from the outer wall of the mold, and then remove the sealing valve 2.
[0021] As a further embodiment of the present invention, the push adjustment component includes: The compression shell 8 is slidably sleeved on the surface of the connecting pipe 1, and the end of the sealing shell 3 is slidably connected in the compression shell 8. A spring 9 is fixedly connected between the sealing shell 3 and the compression shell 8; The rotating block 10 is threadedly connected to the surface of the connecting pipe 1 and is rotatably connected to the outer side wall of the end of the compression shell 8; Also includes: An annular sealing ring 11 is fixedly connected to the end of the sealing shell 3 and is slidably sealed in the compression shell 8; The suction branch is used to suck dry gas into the compression shell 8; An exhaust branch, which is used to discharge the dry gas into the sealed shell 3; Exhaust hole 5, the exhaust hole 5 is opened on the outer wall of the mounting shell 4; A connecting rod 12 is fixedly connected to the outer wall of the compression shell 8 at a position corresponding to the exhaust hole 5, and a sealing block 13 is fixedly connected to the end of the connecting rod 12; Specifically, by providing the compression shell 8 and the rotating block 10, after the sealing valve 2 is connected to the water channel port, the rotating block 10 is rotated, and the compression shell 8 is moved under the action of the threaded connection, and the sealing shell 3 is brought close to the mold and in contact with the outer wall of the mold under the connection action of the spring 9. After the sealing shell 3 is in contact with the mold, the compression shell 8 continues to move, and the spring 9 is compressed, squeezing the air in the compression shell 8 through the annular sealing ring 11, so that the pressure in the compression shell 8 increases, so that the dry gas in the compression shell 8 passes through the exhaust branch, and the dry gas in the compression shell 8 is discharged into the sealing shell 3, and then discharged through the exhaust hole 5, so as to reduce the initial parameters of the air humidity in the sealing shell 3, which is conducive to the rapid increase of the humidity in the sealing shell 3 when a leak occurs at the water channel port, thereby improving the sensitivity of the alarm 7; Until the sealing block 13 seals the exhaust hole 5, stop rotating the rotating block, and seal the sealed shell 3 through the sealing block 13 to prevent outside air from entering and affecting the humidity inside the sealed shell 3; After the test is completed, the rotating block 10 is rotated to move the compression shell 8 away from the sealing shell 3, so that the pressure in the compression shell 8 is reduced, and the dry gas is sucked into the compression chamber through the suction branch to prepare for the next drying of the sealing shell 3.
[0022] As a further embodiment of the present invention, the inhalation branch comprises: Two drying cylinders 14, the drying cylinders 14 are symmetrically fixedly connected to the outer wall of the compression shell 8, and the bottom ends of the drying cylinders 14 pass through the inner wall of the compression shell 8; The sealing cover 15 is threadedly connected to the top of the drying cylinder 14. The top of the sealing cover 15 is fixedly connected to the suction pipe 16. The suction pipe 16 is provided with a first one-way valve 17. The first one-way valve 17 opens when the sealing shell 3 is away from the compression shell 8 to allow external air to enter the compression shell 8. The exhaust branch includes an exhaust hose 18, one end of which is fixedly connected to the compression shell 8, and the other end is fixedly connected to the sealed shell 3. A second one-way valve 19 is provided in the exhaust hose 18. The second one-way valve 19 opens when the sealed shell 3 approaches the compression shell 8 to allow the dry gas in the compression shell 8 to enter the sealed shell 3; Specifically, when the sealed shell 3 moves away from the compression shell 8, the air pressure in the compression shell 8 decreases, the first one-way valve 17 opens, and the second one-way valve 19 is closed, allowing the outside air to enter the drying cylinder 14. The desiccant stored in the drying cylinder 14 dries the outside air, so that the gas stored in the compression shell 8 is dry gas. When the sealed shell 3 approaches the compression shell 8, the gas in the compression shell 8 increases, the second one-way valve 19 opens, and the first one-way valve 17 is in a closed state, so that the dry gas in the compression shell 8 enters the sealed shell 3 through the exhaust hose 18 to reduce the initial parameters of the air humidity in the sealed shell 3, which is beneficial to the rapid increase of the humidity in the sealed shell 3 when a leak occurs at the water port, thereby improving the sensitivity of the alarm 7.
[0023] As a further embodiment of the present invention, the sealing shell 3 has a funnel section and an annular section, the bottom end of the annular section is fixedly connected to a drain pipe 21, and the bottom end of the drain pipe 21 is provided with a drain valve 22; Specifically, by setting up a drain pipe 21 after the funnel section, when the leaked water enters the sealing shell 3, it is drained through the inclined surface of the funnel section, so that the leaked water enters the annular section and enters the drain pipe 21. After the test is completed or when the sealing valve 2 needs to be reconnected to the water channel, the drain valve 22 at the drain pipe 21 is opened to discharge the water in the sealing shell 3 in a direction.
[0024] As a further embodiment of the present invention, a hydrophobic layer is provided on the inner wall of the sealed shell 3 to reduce the water remaining on the inner wall of the sealed shell 3 and avoid excessive initial humidity parameters in the sealed shell 3 .
[0025] As a further embodiment of the present invention, an annular sealing strip 20 is fixedly connected to the end of the annular segment to ensure the sealing performance of the sealing shell 3 in contact with the outer wall of the mold.
[0026] Reference Figure 7 and Figure 8 To solve the above problems, the present invention further proposes an injection mold testing method, comprising: S1: Wrap the sealing tape around the sealing valve 2, and then connect the sealing valve 2 to the water outlet and water inlet of the mold water channel in sequence to form a circulating water channel; S2: Start the push adjustment component to move the sealing shell 3 toward the outer wall of the mold and make contact with the outer wall of the mold; S3: Detecting and recording the current humidity parameter in the sealed shell 3 through the humidity sensor 6 as the initial humidity; S4: Start the external water pump to inject water into the mold water channel. Under the boosting effect of the external water pump, the water channel pressure is increased to the sealing test pressure, and then the boosting valve is closed to maintain the pressure in the test water channel; S5: If the alarm 7 at the corresponding position sounds an alarm, drain the water in the corresponding waterway, then remove the sealing valve 2 at the corresponding position, rewrap the sealing tape, and then reconnect it to the waterway port until the alarm 7 does not sound an alarm during the test: S6: After completing the water circuit test, the water in the mold water circuit is drained through an external water pump. First, the sealing shell 3 is moved away from the outer wall of the mold by pushing the adjustment component, and then the sealing valve 2 is removed.
[0027] It should be noted that the specific usage of the push adjustment components in S2 and S6 include: S201: Rotate the rotating block 10, and under the action of the threaded connection, the compression shell 8 moves, and under the connection action of the spring 9, the sealing shell 3 approaches the mold and contacts the outer wall of the mold; S202: After the sealed shell 3 contacts the mold, the compression shell 8 continues to move, the spring 9 is compressed, and the pressure inside the compression shell 8 increases, causing the dry gas inside the compression shell 8 to pass through the exhaust branch and be discharged into the sealed shell 3, thereby reducing the air humidity inside the sealed shell 3; S203: After the test is completed, the rotating block 10 is rotated to move the compression shell 8 away from the sealing shell 3, so that the pressure inside the compression shell 8 is reduced, and the external gas is sucked into the compression chamber through the suction branch, and the sucked air is dried by the drying cylinder 14.
[0028] The working principle of the present invention is as follows: first, the sealing tape is wrapped around the sealing valve 2, and then the sealing valve 2 is sequentially connected to the water outlet and water inlet of the mold water channel to form a circulating water channel. Then, the push adjustment component is activated to move the sealing shell 3 toward the outer wall of the mold and contact the outer wall of the mold to seal the water channel port and reduce the impact of the external environment on the humidity inside the sealing shell 3; Then, the humidity sensor 6 detects and records the current humidity parameter in the sealed shell 3 as the initial humidity; Start the external water pump to inject water into the mold water channel. Under the boosting effect of the external water pump, increase the water channel pressure to the sealing test pressure, and then close the boost valve to maintain the pressure in the test water channel; If water leaks from the waterway port at one or more locations during the test, the leaked water will enter the sealed shell 3, causing the humidity parameter in the sealed shell 3 to increase. When the humidity exceeds a threshold, for example, the humidity parameter increases by more than 15% of the initial value, the alarm 7 sounds an alarm. Then, the water in the water channel at the corresponding position is drained through an external water pump, and then the sealing valve 2 at the corresponding position is removed, the sealing tape is rewound, and then the sealing valve 2 is reconnected to the water channel port until the alarm 7 does not sound during the test process, thereby ensuring that the sealing valve 2 is sealed and connected to the mold port to avoid interference with the test results; After completing the above preparations, increase the water channel pressure to the sealing test pressure again, and then confirm whether the test water channel has pressure relief by observing the movement of the pointer of the pressure gauge 23, thereby detecting whether the mold water channel has leakage; After completing the water circuit test, drain the water in the mold water circuit through an external water pump, then push the adjustment component to move the sealing shell 3 away from the outer wall of the mold, and then remove the sealing valve 2.
[0029] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.
Claims
1. An injection mold testing device, characterized in that: include: A connecting pipe (1), one end of which is sealingly rotatably connected to a sealing valve (2) adapted to the mold water channel port, and the other end of the connecting pipe (1) is connected to the water channel of an external water pump; A pressure gauge (23), the pressure gauge (23) is used to detect the pressure in the waterway; A sealing shell (3), wherein the sealing shell (3) slides on the surface of the connecting pipe (1); A pushing and adjusting component, wherein the pushing and adjusting component is used to push the sealing shell (3) so that the sealing shell (3) approaches the outer wall of the mold and contacts the outer wall of the mold; a mounting shell (4), the mounting shell (4) being fixedly connected to the outer wall of the top end of the sealing shell (3); a humidity sensor (6) being provided in the mounting shell (4); the humidity sensor (6) being used to detect humidity parameters in the sealing shell (3); An alarm (7) is provided on the top of the outer wall of the mounting shell (4) and is electrically connected to the humidity sensor (6). When the humidity in the sealed shell (3) exceeds a threshold value, the alarm (7) sounds an alarm.
2. The injection mold testing device according to claim 1, characterized in that: The push adjustment component includes: A compression shell (8), wherein the compression shell (8) is slidably sleeved on the surface of the connecting pipe (1), the end of the sealing shell (3) is slidably connected in the compression shell (8), and a spring (9) is fixedly connected between the sealing shell (3) and the compression shell (8); A rotating block (10) is threadedly connected to the surface of the connecting pipe (1), and the rotating block (10) is rotatably connected to the outer side wall of the end of the compression shell (8).
3. The injection mold testing device according to claim 2, characterized in that: Also includes: An annular sealing ring (11), the annular sealing ring (11) is fixedly connected to the end of the sealing shell (3), and the annular sealing ring (11) is slidably sealed in the compression shell (8); An air intake branch, the air intake branch being used to inhale dry gas into the compression shell (8); An exhaust branch, the exhaust branch being used to discharge the dry gas into the sealed shell (3); An exhaust hole (5), the exhaust hole (5) being provided on the outer wall of the mounting shell (4); A connecting rod (12) is fixedly connected to the outer wall of the compression shell (8) at a position corresponding to the exhaust hole (5), and a sealing block (13) is fixedly connected to the end of the connecting rod (12).
4. The injection mold testing device according to claim 3, characterized in that: The inhalation branch comprises: Two drying cylinders (14), the drying cylinders (14) are symmetrically fixedly connected to the outer wall of the compression shell (8), and the bottom ends of the drying cylinders (14) pass through the inner wall of the compression shell (8); A sealing cover (15) is threadedly connected to the top of the drying cylinder (14). The top of the sealing cover (15) is fixedly connected to an air intake pipe (16). A first one-way valve (17) is provided in the air intake pipe (16). The first one-way valve (17) opens when the sealing shell (3) is away from the compression shell (8) to allow external air to enter the compression shell (8).
5. The injection mold testing device according to claim 3, characterized in that: The exhaust branch comprises an exhaust hose (18), one end of which is fixedly connected to the compression shell (8), and the other end of which is fixedly connected to the sealing shell (3). A second one-way valve (19) is provided in the exhaust hose (18), and the second one-way valve (19) opens when the sealing shell (3) approaches the compression shell (8), so that the dry gas in the compression shell (8) enters the sealing shell (3).
6. The injection mold testing device according to claim 1, characterized in that: The sealing shell (3) comprises a funnel section and an annular section, the bottom end of the annular section is fixedly connected to a drainage pipe (21), and the bottom end of the drainage pipe (21) is provided with a drainage valve (22).
7. The injection mold testing device according to claim 6, characterized in that: The inner wall of the sealing shell (3) is provided with a hydrophobic layer.
8. The injection mold testing device according to claim 6, characterized in that: An annular sealing strip (20) is fixedly connected to the end of the annular segment.
9. A method for testing an injection mold, applicable to the injection mold testing device according to claim 3, characterized in that: include: S1: Wrap the sealing tape around the sealing valve (2), and then connect the sealing valve (2) to the water outlet and water inlet of the mold water path in sequence to form a circulating water path; S2: starting the push adjustment component so that the sealing shell (3) moves toward the outer wall of the mold and contacts the outer wall of the mold; S3: Detecting and recording the current humidity parameter in the sealed shell (3) through the humidity sensor (6) as the initial humidity; S4: Start the external water pump to inject water into the mold water channel. Under the boosting effect of the external water pump, the water channel pressure is increased to the sealing test pressure, and then the boosting valve is closed to maintain the pressure in the test water channel; S5: If the alarm (7) at the corresponding position sounds an alarm, drain the water in the corresponding waterway, then remove the sealing valve (2) at the corresponding position, rewrap the sealing tape, and then connect it to the waterway port until the alarm (7) does not sound an alarm during the test: S6: After completing the water circuit test, the water in the mold water circuit is discharged through the external water pump. First, the sealing shell (3) is moved away from the outer wall of the mold by pushing the adjustment component, and then the sealing valve (2) is removed.
10. The injection mold testing method according to claim 9, characterized in that: The specific method of using the push adjustment component in S2 and S6 includes: S201: rotating the rotating block (10), so that the compression shell (8) moves under the action of the threaded connection, and the sealing shell (3) moves close to the mold and contacts the outer wall of the mold under the connection action of the spring (9); S202: After the sealing shell (3) contacts the mold, the compression shell (8) continues to move, the spring (9) is compressed, and the pressure in the compression shell (8) increases, so that the dry gas in the compression shell (8) passes through the exhaust branch and is discharged into the sealing shell (3), so that the air humidity in the sealing shell (3) is reduced; S203: After the test is completed, the rotating block (10) is rotated to move the compression shell (8) away from the sealing shell (3), so that the pressure in the compression shell (8) is reduced, and the external gas is sucked into the compression chamber through the suction branch, and the sucked air is dried through the drying cylinder (14).