A water channel sealing detection device of an injection mold

Abstract

The application relates to the technical field of mold water tightness detection, and discloses a water route tightness detection device for an injection mold, which comprises a water tightness detection module, an oil stain filtering module and a particle filtering module. The water tightness detection module comprises a water tank, a water inlet pipe and a water outlet pipe. The water inlet pipe is connected between the water tightness detection module and the cooling liquid inlet of the mold to be detected. The water outlet pipe is connected between the water tightness detection module and the cooling liquid outlet of the mold to be detected. A water pump is installed on the water inlet pipe, a water pressure gauge is installed on the water outlet pipe, and valves are installed on the water inlet pipe and the water outlet pipe. The water pump is used to make the water circulate between the water tank and the mold to be detected. The oil stain filtering module is used to purify the oil stains in the circulating water. The oil stain removal function is effectively separated from the water circulation function during detection without increasing the interference with the water tightness detection index. The interference caused by the foam generated during the removal of the oil stains is eliminated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mold water tightness detection, and particularly relates to a water channel tightness detection device for injection mold. BACKGROUND

[0002] In the production process of thermoforming (injection) products, the mold needs to be cooled by water continuously to ensure that the mechanical properties of the parts meet the requirements in the continuous production process. The pressure, flow rate and flow of the cooling water in the mold have a direct impact on the production efficiency and quality. In order to ensure the quality of the produced products, the water tightness of the mold must be effectively guaranteed, and the flow rate and flow in the water circulation system need to be monitored. Therefore, the water channel of the mold needs to be detected for tightness during the mold assembly process.

[0003] A common way to detect the tightness of the mold water channel is the "pressure difference method". The so-called "pressure difference method" is that a water supply device is connected with the mold water channel, the water supply device supplies cooling water into the mold and applies pressure, a corresponding detection device is installed on the water flow channel to detect the water pressure, and after maintaining the water seal for a period of time, the change of the water pressure is observed. If the change exceeds a certain value, it means that the mold has a water leakage phenomenon and the water channel is not tight enough.

[0004] During the manufacture of the cooling water channel of the injection mold and during use, impurities such as waste and oil stains may be mixed in. If they are not treated, they may affect the change of the water pressure during the water tightness detection process and interfere with the detection results. Therefore, the water channel tightness detection device for the injection mold often sets a certain filtering means to ensure the cleanliness of the circulating water. However, the traditional filtering means (setting a filter screen, a filter membrane, etc. in the water tank) can only handle particulate impurities such as iron filings and plastic particles, and there is still a lack of effective removal means for oil stains mixed in the circulating water. Therefore, certain improvements are needed. SUMMARY

[0005] The present application provides a water channel tightness detection device for an injection mold, which solves the problem that the traditional filtering means of the traditional water channel tightness detection device for the injection mold can only handle particulate impurities such as iron filings and plastic particles and cannot remove oil stains mixed in the water used during detection.

[0006] In order to achieve the above object, the application provides a water route sealing detection device of an injection mold, which detects the water tightness of a to-be-tested mold, comprising a water tightness detection module, an oil stain filtering module and a particle filtering module, the water tightness detection module comprises a water tank, a water inlet pipe and a water outlet pipe, the water inlet pipe is connected between the water tightness detection module and the cooling liquid inlet of the to-be-tested mold, the water outlet pipe is connected between the water tightness detection module and the cooling liquid outlet of the to-be-tested mold, a water pump is installed on the water inlet pipe, a water pressure sensing element is installed on the water outlet pipe, and valves are installed on the water inlet pipe and the water outlet pipe; the water liquid is circulated between the water tank and the to-be-tested mold by the water pump, and the water tightness of the to-be-tested mold is detected by the reading change of the water pressure sensing element during the circulation of the water liquid.

[0007] The oil stain filtering module and the particle filtering module are matched with the inner cavity of the water tank to purify the impurities in the circulating water liquid.

[0008] The oil stain filtering module comprises a first roller, a filter membrane, a washing tank, a winding shaft, a second roller, a liquid storage tank, a spray head and a motor, the first roller and the second roller are rotatably installed on the left and right sides of the water tank respectively, the filter membrane is wound between the first roller and the second roller, the second roller is covered in the washing tank, the winding shaft is rotatably installed in the washing tank, the second roller is fixedly sleeved on the winding shaft, the motor is arranged on one side of the washing tank, the output end of the motor is fixedly connected with the winding shaft, the filter membrane is driven to penetrate in the water tank by the rotation of the winding shaft, the liquid storage tank is covered on the top of the washing tank, the liquid storage tank stores a detergent capable of removing oil stains, and the bottom of the liquid storage tank is matched with a plurality of spray heads opposite to the second roller.

[0009] As a further scheme of the application, the oil stain filtering module further comprises a stirring shaft and a transmission member, the stirring shaft is rotatably installed in the water tank, blades are fixedly installed on one end of the stirring shaft extending into the water tank, and the transmission member is arranged between the stirring shaft and the winding shaft to realize synchronous action.

[0010] As a further scheme of the application, the transmission member comprises a first bevel gear, a transmission shaft, a second bevel gear, a driving wheel, a driven wheel and a belt, the first bevel gear is fixedly sleeved in the winding shaft, the transmission shaft is rotatably installed on one side of the washing tank, the second bevel gear meshing with the first bevel gear is fixedly sleeved on one end of the transmission shaft, the driving wheel is fixedly installed on the other end of the transmission shaft, the driven wheel is fixedly arranged on the top end of the stirring shaft, and the driving wheel and the driven wheel are transmission matched through the belt.

[0011] As a further scheme of the present application: a support is arranged outside the water tank, the first roller is rotatably arranged in the support, an installation clamping plate is fixedly arranged on the outer wall of the washing tank, and the transmission shaft is rotatably arranged in the installation clamping plate.

[0012] As a further scheme of the present application: the filter membrane, the filter screen and the magnet are arranged in the water tank in sequence from top to bottom, a first through hole communicating with the water outlet pipe and a second through hole communicating with the water inlet pipe are formed in the water tank, the first through hole is located above the filter membrane, and the second through hole is flush with the horizontal plane of the magnet.

[0013] Compared with the prior art, the water route sealing detection device of the injection mold has the following beneficial effects:

[0014] In the oil removal module, the water in the water tank is stratified by the filter membrane, the water flowing back to the water tank from the water outlet pipe passes through the filter membrane first, and the oil in the water is removed under the adsorption and blocking of the filter membrane before entering the circulation, but the adsorption effect of the single-layer filter membrane on the oil is limited and needs to be replaced, at this time, the starting motor is used to rotate the winding shaft, so that the second roller rotates, the filter membrane is wound from the first roller to the second roller, the new filter membrane surface is filled into the water tank, and the oil removal effect is continued, and when the filter membrane is concentrated on the second roller after being used for a period of time, the detergent stored in the liquid storage tank is used to flush the filter membrane in the winding state through the nozzle, the oil adsorbed on the filter membrane is removed, the filter membrane is restored to a clean state, the first roller is manually rotated, the filter membrane is reversely wound back to the first roller for continuous use, and the filter membrane does not need to be replaced frequently, so that the use time of the filter membrane is effectively prolonged.

[0015] It should be clear that the oil removal module is used to purify the oil in the circulating water, and the oil removal effect is effectively separated from the water circulation detection without increasing the interference with the water tightness detection index.

[0016] In addition, the replacement of the filter membrane surface also produces a stirring effect in the water tank, the transmission shaft is synchronously rotated by the meshing of the first bevel gear and the second bevel gear when the motor drives the winding shaft to rotate, and the torque is transmitted to the stirring shaft side by the cooperation of the driving wheel, the driven wheel and the belt, so that the stirring shaft and the blades produce a stirring action in the water tank, the water in the water tank is more evenly distributed under the stirring action, and the impurity removal efficiency and effect are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a whole structure schematic view of a water route sealing detection device of an injection mold provided by the present application;

[0018] Figure 2 is a water tightness detection module structure schematic view of a water route sealing detection device of an injection mold provided by the present application;

[0019] Figure 3 is a water liquid circulation flow structure schematic view of a water tightness detection module of a water route sealing detection device of an injection mold provided by the present application;

[0020] Figure 4 is an oil stain filtering module structure schematic view of a water route sealing detection device of an injection mold provided by the present application;

[0021] Figure 5 is a transmission member structure schematic view of a water route sealing detection device of an injection mold provided by the present application;

[0022] Figure 6 Figure 2 is a detail structure schematic view of A in the middle;

[0023] Figure 7 is an expanded structure schematic view of a particle filtering module of a water route sealing detection device of an injection mold provided by the present application.

[0024] In the figure: 1, mold to be detected; 2, water tightness detection module; 21, water tank; 211, first through hole; 212, second through hole; 22, water inlet pipe; 23, water outlet pipe; 24, water pump; 25, water pressure sensing element; 26, valve; 3, oil stain filtering module; 31, support; 32, first roller; 33, filter membrane; 34, washing box; 340, mounting clamp plate; 35, winding shaft; 36, second roller; 37, stirring shaft; 370, blade; 38, transmission member; 381, first bevel gear; 382, transmission shaft; 383, second bevel gear; 384, driving wheel; 385, driven wheel; 386, belt; 39, liquid storage tank; 390, spray head; 4, particle filtering module; 41, filter screen; 410, handle; 42, magnet; 420, electrified element; 5, motor. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Reference Figures 1-7The utility model provides a kind of water route leakproofness detection device of injection mold, in order to carry out water tightness detection to the mold 1 to be measured, here is provided including water tightness detection module 2, oil stain filter module 3 and particle filter module 4, water tightness detection module 2 includes water tank 21, inlet pipe 22 and outlet pipe 23, inlet pipe 22 is connected between water tightness detection module 2 and the cooling liquid inlet of the mold 1 to be measured, outlet pipe 23 is connected between water tightness detection module 2 and the cooling liquid outlet of the mold 1 to be measured, water pump 24 is installed on inlet pipe 22, water pressure sensing element 25 is installed on outlet pipe 23, water pressure sensing element 25 is the instrument equipment based on water pressure sensor, can detect water pressure when water circulation and carry out numerical display by instrument, valve 26 is installed on inlet pipe 22 and outlet pipe 23, make water liquid circulate between water tank 21 and the mold 1 to be measured by the action of water pump 24, detect the water tightness of the mold 1 to be measured by the reading change of water pressure sensing element 25 during water circulation.

[0027] Oil stain filter module 3 and particle filter module 4 are matched with the inner cavity of water tank 21, and impurities in the circulating water are purified.

[0028] Oil stain filter module 3 includes first roller 32, filter membrane 33, washing tank 34, winding shaft 35, second roller 36, liquid storage tank 39, spray head 390 and motor 5, first roller 32 and second roller 36 are rotatably installed on the left and right sides of water tank 21 respectively, filter membrane 33 is wound between first roller 32 and second roller 36, and filter membrane 33 is sealed at the tank wall of water tank 21, second roller 36 is covered in washing tank 34, winding shaft 35 is rotatably installed in washing tank 34, second roller 36 is fixedly sleeved on winding shaft 35, motor 5 is arranged on one side of washing tank 34, the output end of motor 5 is fixedly connected with winding shaft 35, filter membrane 33 is driven to move in water tank 21 by the rotation of winding shaft 35, liquid storage tank 39 is covered on the top of washing tank 34, and washing agent capable of removing oil stains is stored in liquid storage tank 39, a plurality of spray heads 390 opposite to second roller 36 are matched at the bottom of liquid storage tank 39.

[0029] The specific implementation of the water tightness detection of the mold 1 to be measured is realized by the water tightness detection module 2, specifically, after the water tank 21 is connected with the cooling circulation water route of the mold through the inlet pipe 22 and the outlet pipe 23, the cooperation of the pumping action of the water pump 24 and the flow limiting action of the valve 26 makes the water liquid circulating between the water tank 21 and the mold maintain a certain pressure, the pressure drop is detected after a period of time, if the reading reflected by the water pressure sensing element 25 shows that the pressure drop is slight, the mold has no water leakage phenomenon, if the pressure drop is obvious, it proves that the water tightness of the mold does not meet the process design requirements, and the specific pressure drop change range refers to the commonly used detection execution standard in the industry, which will not be described here.

[0030] In order to eliminate the interference of impurities such as debris and oil stains on the water tightness detection, the oil stain removal module 3 and the particle removal module 4 are further provided, wherein the oil stain removal module 3 removes the oil stains, the particle removal module 4 removes the particle impurities such as iron filings and plastic particles, and the specific implementation of the oil stain removal module 3 is as follows:

[0031] In the oil stain removal module 3, referring to Figure 4 , the filter membrane 33 stratifies the water liquid in the water tank 21, and the water liquid flowing back into the water tank 21 from the water outlet pipe 23 will first pass through the filter membrane 33. Under the adsorption and blocking effect of the filter membrane 33, the oil stains in the water liquid are removed before entering the circulation, and the adsorption effect of the single-layer filter membrane 33 on the oil stains is limited and needs to be replaced. At this time, the starting motor 5 is used to rotate the winding shaft 35, so that the second roller 36 rotates, and the filter membrane 33 is wound from the first roller 32 to the second roller 36 (the effect after complete winding is shown in Figure 4 ). The new filter membrane 33 is filled into the water tank 21, and continues to play a role in removing oil stains. When the filter membrane 33 is used for a period of time and is concentrated on the second roller 36, the detergent stored in the liquid storage tank 39 can be used to flush the filter membrane 33 in the winding state through the nozzle 390 (the related flushing control structure is a prior art implementation). The oil stains adsorbed on the filter membrane 33 are removed, so that the filter membrane 33 is restored to a clean state. Then, the first roller 32 is manually rotated to reversely wind the filter membrane 33 back to the first roller 32 for continuous use, so that the filter membrane 33 does not need to be replaced frequently, effectively prolonging the service life of the filter membrane 33.

[0032] In addition, the way of relying on the oil stain removal module 3 to purify the oil stains in the circulating water liquid is based on the consideration of not increasing the interference with the water tightness detection index (water pressure change). The traditional way of directly adding detergent to the circulating water liquid will produce a large amount of foam when the detergent reacts with the oil stains (similar to washing dishes with dishwashing liquid in real life). These foams mixed into the circulating water path will significantly affect the change of water pressure, resulting in that it is impossible to accurately determine whether the change of water pressure is caused by the mixing of foams or the leakage of the cooling water path of the mold. The specific implementation of the oil stain removal module 3 provided by the present application effectively separates the oil stain removal function from the water liquid circulation function for detection, and eliminates the interference of the foams produced when the oil stains are removed.

[0033] The oil stain removal module 3 further comprises a stirring shaft 37 and a transmission member 38. The stirring shaft 37 is rotatably installed in the water tank 21, and a blade 370 is fixedly installed on one end of the stirring shaft 37 extending into the water tank 21. The transmission member 38 is arranged between the stirring shaft 37 and the winding shaft 35 to realize synchronous action.

[0034] The transmission member 38 comprises a first bevel gear 381, a transmission shaft 382, a second bevel gear 383, a driving wheel 384, a driven wheel 385 and a belt 386. The first bevel gear 381 is fixedly sleeved on the winding shaft 35. The transmission shaft 382 is rotatably installed on one side of the washing box 34. The second bevel gear 383 is fixedly sleeved on one end of the transmission shaft 382 and is engaged with the first bevel gear 381. The driving wheel 384 is fixedly installed on the other end of the transmission shaft 382. The driven wheel 385 is fixedly arranged on the top end of the stirring shaft 37. The driving wheel 384 and the driven wheel 385 are transmissionally matched through the belt 386.

[0035] The replacement of the filter membrane 33 also generates a stirring effect in the water tank 21. Specifically, when the motor 5 drives the winding shaft 35 to rotate, the transmission shaft 382 is synchronously rotated by the engagement of the first bevel gear 381 and the second bevel gear 383. Then, the torque is transmitted to the stirring shaft 37 side by the cooperation of the driving wheel 384, the driven wheel 385 and the belt 386, so that the stirring shaft 37 and the blades 370 generate a stirring action in the water tank 21. The water in the water tank 21 is more uniformly distributed under the stirring action, and the filtering efficiency and effect of impurities are effectively improved. In addition, as shown in the drawings, when the water is above the filter membrane 33, the gravity of the water acts on the filter membrane 33, so that the filter membrane 33 has a tendency to be concave inside the water tank 21. At this time, the blades 370 on the stirring shaft 37 rotate and generate a downward guiding force, which helps to guide the water to flow downward, thereby further increasing the filtering efficiency. Figure 5

[0036] The bracket 31 is arranged outside the water tank 21. The first roller 32 is rotatably installed in the bracket 31, and the bracket 31 provides a rotating installation basis for the first roller 32.

[0037] The mounting clamping plate 340 is fixedly installed on the outer wall of the washing box 34. The transmission shaft 382 is rotatably installed in the mounting clamping plate 340, and the mounting clamping plate 340 provides a rotating installation basis for the transmission shaft 382.

[0038] The particle filtering module 4 comprises a filter screen 41 and a magnet 42. The filter screen 41 is slidably inserted into the water tank 21. The handle 410 is fixedly installed on the end of the filter screen 41 extending out of the water tank 21. After the filter screen 41 collects impurities for a period of time, the filter screen 41 is pulled out through the handle 410, so that the collected impurities can be conveniently cleaned. The magnet 42 is fixedly installed in the bottom inner cavity of the water tank 21. The non-metallic particle impurities are collected by the filter screen 41, and the metallic particle impurities are collected by the adsorption of the magnet 42.

[0039] ​The filter membrane 33, the filter screen 41 and the magnet 42 are arranged in the water tank 21 in sequence from top to bottom, corresponding to the feature that oil stains are distributed in the upper layer of water, oil stain impurities are removed first, and then particle impurities are removed, the filter membrane 33 is designed to allow particle impurities to pass through, the first through hole 211 in communication with the water outlet pipe 23 and the second through hole 212 in communication with the water inlet pipe 22 are formed in the water tank 21, the first through hole 211 is located above the filter membrane 33, and the second through hole 212 is flush with the horizontal plane of the magnet 42, the positions of the first through hole 211 and the second through hole 212 are arranged so that the circulating water can be completely filtered.

[0040] The water tank 21 is provided with an energized element 420 matched with the magnet 42, when the magnet 42 is selected as an electromagnet, the energized element 420 can be used to add and remove magnetism of the magnet 42, so that the removal of impurities collected on the magnet 42 is more flexible.

[0041] Working principle: after the water tank 21 is connected with the cooling circulating water path of the mold through the water inlet pipe 22 and the water outlet pipe 23, the water pump 24 and the valve 26 are used in cooperation to maintain a certain pressure of the water circulating between the water tank 21 and the mold, the pressure drop is detected after a period of time, if the reading reflected by the water pressure sensing element 25 shows that the pressure drop is slight, the mold has no water leakage phenomenon, if the pressure drop is obvious, it proves that the water tightness of the mold does not meet the process design requirements, in the oil stain removal module 3, the filter membrane 33 separates the water in the water tank 21 into layers, the water flowing back to the water tank 21 from the water outlet pipe 23 passes through the filter membrane 33 first, under the adsorption and blocking action of the filter membrane 33, the oil stains in the water are removed before entering the circulation, the adsorption effect of the single-layer filter membrane 33 on oil stains is limited and needs to be replaced, at this time, the motor 5 is started to rotate the winding shaft 35, so that the second roller 36 rotates, the filter membrane 33 is wound from the first roller 32 to the second roller 36, the new filter membrane 33 is filled into the water tank 21 to continue to play a role in removing oil stains, when the filter membrane 33 is concentrated on the second roller 36 after a period of use, the detergent stored in the liquid storage tank 39 is used to flush the filter membrane 33 in the winding state through the nozzle 390, so that the oil stains adsorbed on the filter membrane 33 are removed, the filter membrane 33 is restored to a clean state, then the first roller 32 is manually rotated to reversely wind the filter membrane 33 back to the first roller 32 for continuous use, the particle removal module 4 includes the filter screen 41 and the magnet 42, the filter screen 41 is slidingly inserted into the water tank 21, and the magnet 42 is fixedly installed in the inner cavity of the bottom of the water tank 21, non-metallic particle impurities are collected by the filter screen 41, and metallic particle impurities are collected by the adsorption action of the magnet 42.

[0042] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A water tightness testing device for injection molds, used to test the water tightness of the mold (1) under test, characterized in that, The system includes a water tightness testing module (2), an oil filtration module (3), and a particle filtration module (4). The water tightness testing module (2) includes a water tank (21), an inlet pipe (22), and an outlet pipe (23). The inlet pipe (22) is connected between the water tightness testing module (2) and the coolant inlet of the mold (1) to be tested. The outlet pipe (23) is connected between the water tightness testing module (2) and the coolant outlet of the mold (1) to be tested. A water pump (24) is installed on the inlet pipe (22), and a water pressure sensing element (25) is installed on the outlet pipe (23). Valves (26) are installed on both the inlet pipe (22) and the outlet pipe (23). The water is circulated between the water tank (21) and the mold (1) to be tested by the action of the water pump (24). During the water circulation process, the water tightness of the mold (1) to be tested is detected by the change in the reading of the water pressure sensing element (25). The oil filtration module (3) and the particulate filtration module (4) are both fitted into the inner cavity of the water tank (21) to purify the impurities in the circulating water. The oil filtration module (3) includes a first roller (32), a filter membrane (33), a washing tank (34), a winding shaft (35), a second roller (36), a storage tank (39), a nozzle (390), and a motor (5). The first roller (32) and the second roller (36) are rotatably mounted on the left and right sides of the water tank (21), respectively. The filter membrane (33) is wound between the first roller (32) and the second roller (36). The second roller (36) is covered in the washing tank (34). The winding shaft (35) is rotatably mounted in the washing tank (34). 35), the second roller (36) is fixedly sleeved on the winding shaft (35), a motor (5) is provided on one side of the washing tank (34), the output end of the motor (5) is fixedly connected to the winding shaft (35), and the filter membrane (33) is driven to move through the water tank (21) by the rotation of the winding shaft (35). The top of the washing tank (34) is covered with a liquid storage tank (39), which stores detergent that can remove oil stains. The bottom of the liquid storage tank (39) is fitted with several nozzles (390) facing the second roller (36). The oil filtration module (3) also includes a stirring shaft (37) and a transmission component (38). The stirring shaft (37) is rotatably installed in the water tank (21). A blade (370) is fixedly installed on one end of the stirring shaft (37) that extends into the water tank (21). A transmission component (38) is provided between the stirring shaft (37) and the winding shaft (35) to achieve synchronous operation. The transmission component (38) includes a first bevel gear (381), a transmission shaft (382), a second bevel gear (383), a drive wheel (384), a driven wheel (385), and a belt (386). The first bevel gear (381) is fixedly sleeved in the winding shaft (35). The transmission shaft (382) is rotatably mounted on one side of the washing tank (34). The second bevel gear (383) that meshes with the first bevel gear (381) is fixedly sleeved at one end of the transmission shaft (382), and the drive wheel (384) is fixedly mounted on the other end. The driven wheel (385) is fixedly provided at the top end of the stirring shaft (37). The drive wheel (384) and the driven wheel (385) are driven and engaged by the belt (386).

2. The water channel sealing test device for injection molds according to claim 1, characterized in that, A bracket (31) is provided on the outside of the water tank (21), and the first roller (32) is rotatably installed in the bracket (31).

3. The water channel sealing test device for injection molds according to claim 1, characterized in that, An installation clamp (340) is fixedly installed on the outer wall of the washing tank (34), and the drive shaft (382) is rotatably installed in the installation clamp (340).

4. The water channel sealing test device for injection molds according to claim 1, characterized in that, The particle filtration module (4) includes a filter screen (41) and a magnet (42). The filter screen (41) is slidably inserted into the water tank (21), and the magnet (42) is fixedly installed in the inner cavity at the bottom of the water tank (21).

5. The water channel sealing test device for injection molds according to claim 4, characterized in that, The filter membrane (33), filter screen (41) and magnet (42) are arranged in the water tank (21) in a top-to-bottom order.

6. The water channel sealing test device for injection molds according to claim 4, characterized in that, A handle (410) is fixedly installed on one end of the filter screen (41) that extends out of the water tank (21).

7. The water channel sealing test device for injection molds according to claim 4, characterized in that, The water tank (21) has a first through hole (211) connected to the water outlet pipe (23) and a second through hole (212) connected to the water inlet pipe (22). The first through hole (211) is located above the filter membrane (33), and the second through hole (212) is flush with the horizontal plane of the magnet (42).

8. The water channel sealing test device for injection molds according to claim 4, characterized in that, The water tank (21) is provided with an energizing element (420) that works with the magnet (42) on one side.

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