An ion exchange membrane airtightness testing device

Abstract

This invention discloses an ion-exchange membrane airtightness testing device, comprising a worktable and airtight pressurization components respectively arranged on both sides of its top. Each airtight pressurization component includes an upper airtight mold and a lower airtight mold, each corresponding to the upper mold and having an internal airtight flow channel, and a pushing mechanism connected to the upper airtight mold and driving it downwards to engage with the lower airtight mold. The top of the worktable is equipped with multiple linear modules for driving the lower airtight mold to move left and right. This ion-exchange membrane airtightness testing device can simultaneously or alternately perform testing tasks through the airtight pressurization components on both sides. Combined with the left and right movement control of the lower airtight mold by the linear modules, it achieves dynamic connection between multi-station parallel testing and material flow. When one station is performing a pressurization and pressure holding test, the other station can quickly switch the position of the lower airtight mold through the linear modules, simultaneously completing the unloading of the tested workpiece and the positioning and clamping of the new workpiece, significantly improving the testing throughput per unit time.

Description

Technical Field

[0001] This utility model relates to the field of ion membrane airtightness testing technology, specifically to an ion membrane airtightness testing device. Background Technology

[0002] Current ion exchange membrane airtightness testing equipment mostly adopts an independent airtightness testing station design, lacking a collaborative mechanism between the stations. Traditional equipment typically uses fixed airtight molds to clamp, position, pressurize, and unload ion exchange membranes one by one, resulting in a long testing time per cycle and making it difficult to achieve multi-station parallel operation. Especially when processing large batches of ion exchange membranes, frequent mold opening and closing and repeated positioning are required, and the dynamic adjustment function of the linear module is not fully utilized, failing to adapt to the rapid changeover requirements of different ion exchange membrane specifications, significantly limiting the overall testing efficiency. Utility Model Content

[0003] This invention proposes an ion membrane airtightness testing device, which solves the problem that in the prior art, ion membranes are clamped, positioned, pressurized, and unloaded one by one using a fixed airtight mold, resulting in a long time consumption for a single testing process and making it difficult to achieve multi-station parallel operation.

[0004] The technical solution of this utility model is implemented as follows:

[0005] An ion membrane airtightness testing device includes a workbench and airtight pressurization components respectively arranged on both sides of its top; the airtight pressurization components include an upper airtight mold and a lower airtight mold that are corresponding to each other and have airtight flow channels inside, and a pushing mechanism connected to the upper airtight mold and driving it to move downward to engage with the lower airtight mold; the top of the workbench is provided with multiple linear modules for driving the lower airtight mold to move left and right.

[0006] Furthermore, the pushing mechanism includes multiple columns and a top plate fixed above the columns, with a telescopic cylinder at the top of the top plate; a pressure plate is slidably arranged on the outside of the multiple columns through a sleeve, and the output end of the telescopic cylinder extends to the bottom of the top plate and is fixed above the pressure plate; wherein the top of the upper airtight mold is fixed to the bottom of the pressure plate.

[0007] Furthermore, the linear module is a linear slide.

[0008] Furthermore, at least two anti-detachment components are provided on both sides of the top of the workbench corresponding to the two ends of the linear module to prevent the lower airtight mold from displacing and detaching.

[0009] Furthermore, the workbench is equipped with multiple sensors on the front and rear sides of the top to sense the displacement position of the airtight mold.

[0010] Furthermore, a multi-axis linear module support is provided on one side of the top of the workbench, and a coding / scanning machine corresponding to the ion membrane in the lower airtight mold is provided on the multi-axis linear module support.

[0011] Furthermore, the upper and lower airtight molds are provided with multiple gas filling pipe heads on their sides, the gas filling pipe heads are connected to the airtight flow channel, and the other end of the gas filling pipe head is connected to a gas filling pipe.

[0012] Furthermore, it also includes a vision system, which includes a support frame mounted above the worktable and at least two vision detectors fixed on the support frame for visual positioning and size detection of the ion membrane.

[0013] The beneficial effects of the technical solution provided in this application are as follows:

[0014] 1. This ion-exchange membrane airtightness testing equipment significantly improves testing efficiency by symmetrically arranging airtight pressurization components on both sides of the top of the worktable and combining them with the coordinated drive of multiple linear modules. Firstly, the airtight pressurization components on both sides can perform testing tasks simultaneously or alternately. Combined with the left-right movement control of the lower airtight mold by the linear modules, dynamic integration of multi-station parallel testing and material flow is achieved. When one station is performing pressurization and pressure holding tests, the other station can quickly switch the position of the lower airtight mold through the linear modules, simultaneously completing the unloading of the tested workpiece and the positioning and clamping of the new workpiece, effectively reducing equipment idle waiting time and significantly increasing the testing throughput per unit time.

[0015] 2. This ion membrane airtightness testing equipment features a linear module-driven design for lateral movement of the airtight mold, enabling flexible mold adaptation. By programmably controlling the movement trajectory and stopping position of the airtight mold under different conditions, it can quickly match the testing requirements of different ion membrane specifications without requiring manual mold replacement or mechanical structure adjustments. This dynamic adjustment mechanism, combined with the vertical docking action of the upper and lower molds, ensures precise alignment of the airtight flow channel and uniform pressing of the sealing ring, while also enabling rapid switching between multi-size testing fixtures, significantly shortening changeover and debugging time and adapting to small-batch, multi-variety production scenarios.

[0016] 3. This ion membrane airtightness testing equipment optimizes the testing sequence through the coordinated action of the derivation mechanism and the linear module. The downward pressing action of the upper airtight mold and the horizontal movement of the lower airtight mold are matched by the control system, forming a continuous operation cycle for mold opening and closing, workpiece transfer, and pressure testing. This design transforms the traditional discrete testing process of independent workstations into a continuous flow operation. Especially for long-sized ion membranes, multi-point continuous testing can be achieved by moving the lower mold in segments, avoiding repeated clamping, reducing ineffective strokes, and improving overall testing efficiency by more than 30%, meeting the rigid requirements of high-precision and high-efficiency airtightness testing in large-scale production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the ion membrane airtightness testing device of this utility model;

[0019] Figure 2 This is a schematic diagram of the airtight pressurization component of this utility model;

[0020] Figure 3 This is a schematic diagram of the workbench of this utility model;

[0021] Figure 4 This is a schematic diagram of the workbench and vision system of this utility model.

[0022] In the diagram: 10 Workbench, 11 Inkjet / Scanning Machine, 12 Linear Module, 13 Anti-detachment Component, 14 Sensor Component, 15 Multi-axis Linear Module Support, 20 Airtight Pressurization Assembly, 21 Column, 22 Top Plate, 23 Telescopic Cylinder, 24 Pressure Plate, 25 Upper Airtight Mold, 26 Lower Airtight Mold, 27 Air Filling Pipe Head, 30 Vision System, 31 Support Frame, 32 Vision Detector. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. 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.

[0024] Reference Figure 1-4This embodiment provides an ion membrane airtightness testing device, including a workbench 10 and airtight pressurization components 20 respectively arranged on both sides of its top. The airtight pressurization component 20 includes an upper airtight mold 25 and a lower airtight mold 26, which are correspondingly positioned and have airtight flow channels inside, and a pushing mechanism connected to the upper airtight mold 25 and driving it to move downward to engage with the lower airtight mold 26. The top of the workbench 10 is provided with multiple linear modules 12 for driving the lower airtight mold 26 to move left and right. When the test is started, the linear modules 12 drive the lower airtight mold 26 to move laterally along the workbench 10 to a preset station. The pushing mechanism then pushes the upper airtight mold 25 down, so that the airtight flow channels of the upper airtight mold 25 and the lower airtight mold 26 form a closed testing cavity. After the test at the current station is completed, the linear modules 12 quickly move the lower airtight mold 26 to the next station, while the airtight pressurization component 20 on the other side performs the testing action simultaneously, realizing dual-station alternating operation. This dynamic collaborative mechanism, through time-series optimization, seamlessly connects mold positioning, sealing and pressing, and testing processes, significantly improving the efficiency of continuous equipment operation.

[0025] like Figure 2 As shown, the guiding mechanism includes multiple columns 21 and a top plate 22 fixed above the columns 21. A telescopic cylinder 23 is mounted on the top of the top plate 22. Pressure plates 24 are slidably mounted on the outside of the multiple columns 21 via sleeves. The output end of the telescopic cylinder 23 extends below the top plate 22 and is fixed above the pressure plate 24. The top of the upper airtight mold 25 is fixed to the bottom of the pressure plate 24. When the telescopic cylinder 23 is activated, the pressure plate 24 moves vertically downwards along the columns 21, causing the upper airtight mold 25, fixed to its bottom, to descend synchronously until it is tightly fitted with the lower airtight mold 26 after being positioned by the linear module 12, forming a closed airtight flow channel. After the test is completed, the telescopic cylinder 23 retracts and lifts the pressure plate 24, and the upper airtight mold 25 resets. At this time, the linear module 12 can drive the lower airtight mold 26 to move laterally to switch positions. The guiding function of the column 21 and the rigid connection design of the pressure plate 24 ensure the stability of movement and the reliability of sealing when the upper airtight mold 25 and the lower airtight mold 26 are repeatedly docked.

[0026] In some embodiments, the linear module 12 is a linear slide. The linear slide 12 is driven by a built-in servo motor via a ball screw or synchronous belt drive, moving the lower airtight mold 26 laterally along the slide guide rail to a preset coordinate position. The control system adjusts the moving speed and stroke of the slide 12 in real time according to the requirements of the inspection station, ensuring that the lower airtight mold 26 and the upper airtight mold 25 driven by the pushing mechanism are completely aligned on the axis when vertically docked. The high rigidity of the slide 12's guide rail suppresses vibration and deformation during movement, stabilizing the positioning accuracy of the lower mold 26 at the micrometer level, thereby achieving rapid closure of the airtight flow channel and efficient sealing detection.

[0027] exist Figure 3In this structure, at least two anti-detachment components 13 are respectively provided on both sides of the top of the workbench 10 at the ends of the linear module 12 to prevent the lower airtight mold 26 from displacing. The anti-detachment components 13 are located at both ends of the linear module 12 and mechanically limit the movement of the lower airtight mold 26, preventing it from detaching from the guide rail due to inertia or overtravel when moving left and right along the slide table 12. This structure, through rigid blocking or elastic buffering design, provides a physical stop when the lower airtight mold 26 reaches the preset work station limit position, ensuring both movement safety and stability, and preventing misalignment of the upper airtight mold 25 and lower airtight mold 26 due to accidental displacement of the lower airtight mold 26, ensuring the reliability of the detection cavity closure. Specifically, the anti-detachment component 13 can be an L-shaped stop with an elastic pad on the side of the stop near the lower airtight mold 26, or... Figure 3 The T-shaped stop shown has a push post inside. The stop can be used with a spring in conjunction with the push post to achieve elastic buffering. The use of spring and push post is common knowledge and will not be elaborated on here.

[0028] In some embodiments, multiple sensors 14 are provided on the front and rear sides of the top of the workbench 10 to sense the displacement position of the lower airtight mold 26. These sensors 14 monitor the displacement position of the lower airtight mold 26 in real time, providing closed-loop feedback signals for the movement control of the linear module 12. This design utilizes the photoelectric or magnetic induction characteristics of the sensors 14 to accurately capture the actual coordinates of the lower airtight mold 26 during lateral movement, dynamically correcting the drive commands of the linear module 12. This ensures that the mold 26 stops at the preset position, avoiding misalignment between the upper and lower airtight molds 25 and 26 due to mechanical transmission errors. Simultaneously, it provides accurate trigger signals for alternating multi-station detection, optimizing the timing of equipment actions.

[0029] In some embodiments, a multi-axis linear module support 15 is also provided on one side of the top of the workbench 10. The multi-axis linear module support 15 controls the position of the inkjet / scanning machine 11 through multi-degree-of-freedom motion, so that it is accurately aligned with the ion membrane surface in the lower airtight mold 26. This design, through the lateral, longitudinal, and height adjustment capabilities of the multi-axis linear module support 15, adapts to the inkjet or scanning requirements of ion membranes of different specifications, realizes the automated binding of detection results with workpiece markings, and avoids positioning errors introduced by manual operation, ensuring the synchronization and traceability of information recording and detection processes. Specifically, the multi-axis linear module support 15 can be a three-axis slide table. The multi-axis linear module support 15 is equipped with an inkjet / scanning machine 11 corresponding to the ion membrane in the lower airtight mold 26. The inkjet / scan machine 11 consists of an inkjet printer, a barcode scanner, a telescopic cylinder, etc. It is mainly used to print codes on the ion membrane after airtightness testing, and to check whether the QR code is blurry and whether the information is correct. The real-time adjustment capability of the multi-axis linear module bracket 15 enables the inkjet / scan machine 11 to maintain high-precision operation under complex spatial trajectories, avoids motion interference with the upper airtight mold 25 and the lower airtight mold 26, and improves the level of automation of the whole process.

[0030] In some embodiments, the upper airtight mold 25 and the lower airtight mold 26 are provided with multiple gas filling pipe heads 27 on their sides. Each gas filling pipe head 27 is connected to an airtight flow channel, and the other end of each gas filling pipe head 27 is connected to an external gas filling pipe. The multiple gas filling pipe heads 27 on the sides of the upper and lower airtight molds 25 and 26 are connected to the airtight flow channel via external gas filling pipes, forming a distributed gas injection and discharge channel. This design, through the symmetrical layout of the multiple gas filling pipe heads 27, achieves rapid pressure equalization and stable pressure control of the gas within the detection chamber.

[0031] In some embodiments, a vision system 30 is also included. The vision system 30 includes a support frame 31 mounted above the worktable 10 and at least two vision detectors 32 fixed on the support frame 31 for visual positioning and size detection of the ion exchange membrane. The vision detectors 32 consist of a vision detector, a light source, etc. When the ion exchange membrane is placed in the lower airtight mold 26, the light source component of the vision detector 32 provides uniform illumination, and the vision camera captures an image of the membrane surface to detect the actual size and position information. The detection data is transmitted to the control system in real time. On the one hand, it drives the linear module 12 to fine-tune the lateral coordinates of the lower mold 26 so that the airtight flow channel is perfectly aligned with the upper mold 25. On the other hand, it provides the material picking coordinates for the subsequent robotic arm to ensure that the ion exchange membrane after detection is accurately grasped and classified for transfer. The timing coordination between the vision system 30, the derivation mechanism, and the linear module 12 achieves seamless connection of the "detection-positioning-picking" action, avoiding the risk of cycle delay or secondary damage caused by manual intervention.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An ion-exchange membrane airtightness testing device, characterized in that, It includes a workbench (10) and airtight pressurization components (20) respectively provided on both sides of its top; the airtight pressurization components (20) include an upper airtight mold (25) and a lower airtight mold (26) that are corresponding to each other and have airtight flow channels inside, and a push mechanism that is connected to the upper airtight mold (25) and drives it to move downward to engage with the lower airtight mold (26); the top of the workbench (10) is provided with multiple linear modules (12) for driving the lower airtight mold (26) to move left and right.

2. The ion-exchange membrane airtightness testing device as described in claim 1, characterized in that, The pushing mechanism includes multiple columns (21) and a top plate (22) fixed above the columns (21). A telescopic cylinder (23) is provided on the top of the top plate (22). A pressure plate (24) is slidably provided on the outside of the multiple columns (21) through a sleeve. The output end of the telescopic cylinder (23) extends to the bottom of the top plate (22) and is fixed above the pressure plate (24). The top of the upper airtight mold (25) is fixed to the bottom of the pressure plate (24).

3. The ion-exchange membrane airtightness detection device as described in claim 1, characterized in that, The linear module (12) is a linear slide.

4. The ion-exchange membrane airtightness testing device as described in claim 1, characterized in that, At least two anti-detachment parts (13) are provided on both sides of the top of the workbench (10) at the ends of the linear module (12) to prevent the lower airtight mold (26) from displacing and detaching.

5. The ion-exchange membrane airtightness testing device as described in claim 1, characterized in that, The workbench (10) is provided with multiple sensors (14) on the front and rear sides of the top to sense the displacement position of the airtight mold (26).

6. The ion-exchange membrane airtightness testing device as described in claim 1, characterized in that, The workbench (10) is also provided with a multi-axis linear module support (15) on one side of the top, and the multi-axis linear module support (15) is provided with a coding machine (11) corresponding to the ion membrane in the lower airtight mold (26).

7. The ion-exchange membrane airtightness testing device as described in claim 1, characterized in that, The upper airtight mold (25) and the lower airtight mold (26) are provided with multiple gas filling pipe heads (27) on their sides. The gas filling pipe heads (27) are connected to the airtight flow channel, and the other end of the gas filling pipe head (27) is connected to a gas filling pipe.

8. The ion-exchange membrane airtightness testing device as described in claim 1, characterized in that, It also includes a vision system (30), which includes a support frame (31) mounted above the worktable (10) and at least two vision detectors (32) fixed on the support frame (31) for visual positioning and size detection of the ion membrane.

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