A device for detecting the air tightness of a membrane sealing sheet

Abstract

This utility model discloses a device for testing the airtightness of a diaphragm sealing sheet, belonging to the field of airtightness testing of sealing sheets. It includes a workbench with two side plates connected to its top. Each side plate has an inclined groove on its adjacent side. A movable plate is positioned between the two side plates, with its sides positioned within the two inclined grooves. The movable plate can move along the inclined grooves. Multiple lower blocks are arranged side-by-side on the top of the movable plate. An upper pressure plate is positioned above the lower blocks, and an upper block is mounted on the upper pressure plate. The upper pressure plate is mounted on a lifting mechanism. Through the movable mechanism, in conjunction with the inclined grooves on the side plates and the movable plate with sliding rods, the movable plate can be driven to move the lower blocks away from or closer to the area directly below the upper blocks. When picking up or placing workpieces, the lower blocks move to the area directly below the upper blocks, providing unobstructed space for manual operation, completely avoiding obstruction and the risk of injury from the upper pressure plate, and improving operational safety and convenience.

Description

Technical Field

[0001] This utility model belongs to the field of airtightness testing technology for sealing sheets, and specifically relates to an airtightness testing device for membrane sealing sheets. Background Technology

[0002] Diaphragm seals use their flexible diaphragms to isolate different media or spaces, preventing leakage of liquids, gases, etc., while allowing pressure transmission. Their working principle utilizes the elastic deformation of the diaphragm to adapt to different operating conditions and maintain good sealing performance.

[0003] After the diaphragm sealing sheet is produced, its sealing performance must be verified through specialized testing. The testing process begins with precise positioning of the diaphragm sealing sheet. A rubber seal airtightness testing device uses the coordinated pressing of an upper and lower pressure plate and a pressure cap to achieve fixation. The testing system uses compressed air as a medium to apply positive or negative pressure to the inner cavity or outer surface of the sealing sheet. Simultaneously, air pressure sensors and pressure sensors capture pressure change data in real time to determine whether the sealing performance is qualified. However, the current testing process has significant shortcomings: the handling of the workpiece relies on manual operation. Workers must remove or place the sealing sheet from the lower pressure cap. The upper pressure plate of the device not only obstructs space during operation, affecting handling efficiency, but also poses a safety hazard of accidental contact or operational errors leading to injury to operators. Therefore, a diaphragm sealing sheet airtightness testing device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the airtightness of a membrane sealing sheet, so as to solve the problems of inconvenient operation and safety hazards in handling and placing membrane sealing sheets.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a membrane sealing sheet airtightness testing device, comprising a workbench, the top of which is connected to two side plates, each of which has an inclined groove on one side close to the other, a movable plate between the two side plates, the two sides of which are disposed in the two inclined grooves, the movable plate being movable along the inclined grooves, a plurality of lower blocks arranged side by side on the top of the movable plate, an upper pressure plate above the lower blocks, an upper block mounted on the upper pressure plate, and the upper pressure plate being mounted on a lifting mechanism.

[0006] Furthermore, each of the lower blocks is connected to an air pipe, and an air pump and a pressure detector are provided at the end of the air pipe away from the lower block.

[0007] Furthermore, both sides of the movable plate are connected to sliding rods, and the two sliding rods are respectively slidably arranged in two inclined grooves.

[0008] Furthermore, a protrusion is provided on one side of the movable plate, and a circular through groove is formed on the protrusion.

[0009] Furthermore, a moving mechanism is provided on the top of the workbench. The moving mechanism includes a threaded rod, a motor, and a moving block. The motor is installed on one side of the workbench, the threaded rod is installed on the output shaft of the motor, the moving block is threaded onto the threaded rod, and a vertical rod is connected to the top of the moving block. The protrusion is movably sleeved on the vertical rod through a circular through groove.

[0010] Furthermore, the two inclined grooves are symmetrically arranged with the axis of the threaded rod as the axis.

[0011] Furthermore, the lifting mechanism includes an electric push rod, the push shaft of which is arranged downwards, and an upper pressure plate is installed on the push shaft of the electric push rod.

[0012] Furthermore, a horizontal plate is connected to the top of the two side plates, and the electric push rod is mounted on the horizontal plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This membrane sealing sheet airtightness testing device, through a moving mechanism combined with a side plate inclined groove and a moving plate with a sliding rod, can drive the moving plate to move the lower block away from or closer to the area directly below the upper block. When picking up or placing workpieces, the lower block moves to the area directly below the upper block, providing unobstructed space for manual operation, completely avoiding the obstruction and crushing risk of the upper pressure plate, and improving the safety and convenience of operation. Attached Figure Description

[0015] Figure 1 A perspective view of the membrane sealing sheet airtightness testing device;

[0016] Figure 2 for Figure 1 Schematic diagram after removing the horizontal plate;

[0017] Figure 3 for Figure 1 Schematic diagram of the connection of the horizontal plate;

[0018] Figure 4 for Figure 3 Exploded view;

[0019] Figure 5 This is a schematic diagram of a membrane sealing sheet.

[0020] In the diagram: 10, workbench; 110, side plate; 1101, inclined groove; 120, horizontal plate; 130, electric push rod; 20, moving plate; 201, slide rod; 202, protrusion; 2021, circular through groove; 210, lower assembly block; 211, air pipe; 220, upper pressure plate; 230, upper assembly block; 310, threaded rod; 320, motor; 330, moving block; 331, vertical rod. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-5 This utility model provides a device for testing the air tightness of a membrane sealing sheet, including a workbench 10. The top of the workbench 10 is connected to two side plates 110. Each of the two side plates 110 has a groove 1101 on one side that is close to each other. The two grooves 1101 are symmetrically arranged on the threaded rod 310. A movable plate 20 is arranged between the two side plates 110. Multiple lower blocks 210 are arranged side by side on the top of the movable plate 20. The multiple lower blocks 210 are connected to an air pipe 211. An air pump and a pressure detector are arranged at the end of the air pipe 211 away from the lower blocks 210.

[0024] Both sides of the movable plate 20 are connected to slide rods 201. The two slide rods 201 are slidably arranged in two inclined grooves 1101 respectively. A protrusion 202 is provided on one side of the movable plate 20, and a circular through groove 2021 is opened on the protrusion 202.

[0025] A horizontal plate 120 is connected to the top of the two side plates 110. An electric push rod 130 is installed on the horizontal plate 120. The push shaft of the electric push rod 130 is set downward, and an upper pressure plate 220 is installed on the push shaft of the electric push rod 130. An upper clamping block 230 is installed on the upper pressure plate 220. The bottom of the upper clamping block 230 is adapted to the top of the lower clamping block 210. The upper clamping block 230 is located directly below the lower clamping block 210. The diaphragm sealing sheet is placed on the lower clamping block 210, and then pressed down by the upper clamping block 230 to make the lower clamping block 210 and the upper clamping block 230 a sealed state.

[0026] The top of the workbench 10 is equipped with a moving mechanism, which includes a threaded rod 310, a motor 320, and a moving block 330. The motor 320 is installed on one side of the workbench 10, the threaded rod 310 is installed on the output shaft of the motor 320, and the moving block 330 is threadedly sleeved on the threaded rod 310. A vertical rod 331 is connected to the top of the moving block 330, and a protrusion 202 is movably sleeved on the vertical rod 331 through a circular through slot 2021. When the motor 320 is started, the motor 320 drives the threaded rod 310 to rotate. The moving block 330 moves under the action of the threaded rod 310 and the vertical rod 331. The vertical rod 331 drives the moving plate 20, so that the moving plate 20 moves along the inclined groove 1101 away from or close to the bottom of the upper block 230.

[0027] The working principle and usage process of this utility model are as follows: Start the motor 320, which drives the threaded rod 310 to rotate. Under the action of the threaded rod 310, the moving block 330 moves away from the direction directly below the upper block 230. The vertical rod 331 at the top of the moving block 330 moves synchronously. Since the protrusion 202 is movably sleeved on the vertical rod 331 through the circular through groove 2021, the vertical rod 331 drives the moving plate 20 to move along the inclined groove 1101, so that the lower block 210 on the moving plate 20 moves away from the area directly below the upper block 230. Then, the diaphragm sealing sheet is placed stably on the lower block 210.

[0028] The motor 320 is started in reverse. The motor 320 drives the threaded rod 310 to rotate in the opposite direction. The moving block 330 moves towards the direction directly below the upper block 230. The vertical rod 331 drives the moving plate 20 to move in the opposite direction along the inclined groove 1101 until the lower block 210 moves directly below the upper block 230. At this time, the motor 320 is turned off.

[0029] Start the electric push rod 130. The push shaft of the electric push rod 130 extends downward, driving the upper pressure plate 220 and the upper connecting block 230 to move downward together. When the upper connecting block 230 contacts the lower connecting block 210 and continuously applies pressure, a sealed state is formed between the lower connecting block 210 and the upper connecting block 230. Then the electric push rod 130 is closed.

[0030] Turn on the air pump. The air pump draws air into the sealed space formed by the lower block 210 and the upper block 230 through the air pipe 211, so that a negative pressure environment is formed in the sealed space. At the same time, turn on the pressure detector to monitor the pressure change in the sealed space in real time. Set the detection time and observe whether the value of the pressure detector remains stable within the detection time.

[0031] If the pressure value displayed by the pressure detector remains within the set acceptable range and shows no obvious downward trend during the testing period, the diaphragm seal is deemed to be airtight. If the pressure value drops significantly and exceeds the acceptable range, the diaphragm seal is deemed to be airtight and leaking.

[0032] After the test is completed, first turn off the air pump and pressure detector, then start the electric push rod 130 to retract the pushing axis of the electric push rod 130 upward, driving the upper pressure plate 220 and the upper assembly block 230 to move upward away from the lower assembly block 210. Then start the motor 320 to move the moving plate 20 away, and finally take out the tested diaphragm sealing sheet.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the airtightness of a diaphragm sealing sheet, comprising a worktable (10), characterized in that: The top of the workbench (10) is connected to two side plates (110). The two side plates (110) are provided with inclined grooves (1101) on the side that is close to each other. A movable plate (20) is provided between the two side plates (110). The two sides of the movable plate (20) are provided in the two inclined grooves (1101). The movable plate (20) is provided on the moving mechanism so that the movable plate (20) can move along the inclined grooves (1101). Multiple lower blocks (210) are arranged side by side on the top of the movable plate (20). An upper pressure plate (220) is provided above the lower blocks (210). An upper block (230) is installed on the upper pressure plate (220). The upper pressure plate (220) is installed on the lifting mechanism.

2. The airtightness testing device for a membrane sealing sheet according to claim 1, characterized in that: Each of the lower blocks (210) is connected to an air pipe (211), and an air pump and a pressure detector are provided at the end of the air pipe (211) away from the lower block (210).

3. The airtightness testing device for a membrane sealing sheet according to claim 1, characterized in that: The movable plate (20) is connected to slide rods (201) on both sides, and the two slide rods (201) are respectively slidably arranged in two inclined grooves (1101).

4. The airtightness testing device for a membrane sealing sheet according to claim 1, characterized in that: A protrusion (202) is provided on one side of the movable plate (20), and a circular through groove (2021) is provided on the protrusion (202).

5. The airtightness testing device for a membrane sealing sheet according to claim 4, characterized in that: The moving mechanism includes a threaded rod (310), a motor (320), and a moving block (330). The motor (320) is mounted on one side of the workbench (10). The threaded rod (310) is mounted on the output shaft of the motor (320). The moving block (330) is threaded onto the threaded rod (310). A vertical rod (331) is connected to the top of the moving block (330). The protrusion (202) is movably sleeved on the vertical rod (331) through a circular through slot (2021).

6. The airtightness testing device for a membrane sealing sheet according to claim 5, characterized in that: The two inclined slots (1101) are arranged symmetrically about the axis of the threaded rod (310).

7. The airtightness testing device for a membrane sealing sheet according to claim 1, characterized in that: The lifting mechanism includes an electric push rod (130), the push shaft of the electric push rod (130) is arranged downward, and an upper pressure plate (220) is installed on the push shaft of the electric push rod (130).

8. The airtightness testing device for a membrane sealing sheet according to claim 7, characterized in that: A horizontal plate (120) is connected to the top of the two side plates (110), and the electric push rod (130) is mounted on the horizontal plate (120).

Images