Silicone rubber diaphragm air tightness testing machine

Abstract

The utility model relates to the technical field of diaphragm air tightness testing, in particular to a silicone rubber diaphragm air tightness testing machine which comprises a base, a detection disc is arranged at the top of the base, four detection grooves are formed in the top of the detection disc and distributed in an annular array mode, a water tank is formed in the center of the detection disc, and the water tank is arranged in the water tank. A detection air cylinder is arranged at the position, above one of the detection grooves, of the base, an intermittent mechanism is arranged at the bottom of the detection disc and used for switching the detection grooves, and a pressurization mechanism is arranged at the top of the base and used for controlling lifting of a piston column. According to the utility model, through the arrangement of the detection grooves, when the membranes in one of the detection grooves are detected, the membranes in the detection grooves in other areas can be taken, so that the membranes are replaced while uninterrupted detection is carried out, and the detection efficiency is greatly improved by intermittently switching the detection grooves under the cooperation of the intermittent mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of diaphragm air tightness test, concretely to a silicon rubber diaphragm air tightness test machine. BACKGROUND

[0002] In order to ensure product quality, in the production process of silicon rubber diaphragm, the silicon rubber diaphragm product needs to be tested for air tightness, and one of the common working principles of the silicon rubber diaphragm air tightness test machine. The tester first installs the silicon rubber diaphragm in a sealed test cavity, and then fills a certain pressure gas (usually air) into the test cavity. If the diaphragm is air-tight, the pressure in the test cavity will remain stable for a period of time; if the diaphragm leaks, the gas in the test cavity will leak out through the leakage point, causing the pressure to drop. The pressure change is detected by a high-precision pressure sensor to determine the air tightness of the diaphragm.

[0003] The prior art such as publication number CN203275029U provides a diaphragm leak detector. It includes a base frame, a cylinder, an instrument box, a mold closing mechanism, an electromagnetic valve assembly and a control button assembly, the base frame includes a fixed plate, a support column, a bottom plate and a support foot, the support foot supports the four corners of the bottom plate, the support column is between the fixed plate and the bottom plate, and the fixed plate is supported; the cylinder and the instrument box are arranged side by side on the fixed plate, the mold closing mechanism is connected to the cylinder at the upper end and to the bottom plate at the lower end, and is arranged on one side of the support column, the electromagnetic valve assembly is connected to the bottom plate and the fixed plate, and is arranged on the other side of the support column, the control button assembly is arranged below the base frame, and the electrical control device in the instrument box controls the cylinder and the electromagnetic valve assembly. The utility model has the advantages of simple and compact design, can set the test time, does not need to be observed by the human eye, tests the diaphragm fast, has high accuracy, saves manpower and improves work efficiency.

[0004] At present, during the detection process, the operator first puts a plurality of silicon rubber diaphragms in a batch into each detection cavity of the pressure tank, then positions each silicon rubber diaphragm, closes the tank cover for pressure testing, and then takes out the silicon rubber diaphragms in the batch after the test is completed, and then puts the silicon rubber diaphragms in the next batch into each detection cavity of the pressure tank, and then continues to work in the above manner. The intermittent operation mode has low detection efficiency and cannot meet the industrial requirements. In view of this, we propose a silicon rubber diaphragm air tightness test machine. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a silicon rubber diaphragm air tightness test machine, which solves the problem of low detection efficiency of the intermittent operation mode and far cannot meet the industrial requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A kind of silicone rubber diaphragm air tightness testing machine, including base, the top of the base is provided with detection disc, the top of the detection disc is provided with four detection grooves, and four detection grooves are distributed in ring array, water tank is set in the center of the detection disc, detection gas cylinder is set in the top of the base above one of detection grooves;

[0008] The bottom of the detection disc is provided with intermittent mechanism, for switching detection groove;

[0009] The top of the base is provided with pressurizing mechanism, for controlling the lifting of piston column.

[0010] Preferably, the intermittent mechanism includes a turntable, the turntable is fixedly connected to the bottom of the detection disc, four guide grooves are formed in the turntable, a lever is rotatably connected to the top of the base, and a servo motor is arranged inside the base to drive the lever to rotate, and the lever moves in cooperation with the guide grooves.

[0011] Preferably, the bottom of the turntable is fixedly connected to a limiting disc, and the bottom of the lever is rotatably connected to a limiting arc, and the limiting arc moves in cooperation with the limiting disc.

[0012] Preferably, the water tank is communicated with the detection groove, and a one-way valve is arranged in the pipeline for preventing liquid from flowing into the detection groove, and the bottom of the detection groove is in a mesh structure.

[0013] Preferably, the pressurizing mechanism includes a rotating rod, the rotating rod is fixedly connected to the top of the turntable, and a pressure ring is radially slidably connected to the outer wall of the rotating rod through a key groove.

[0014] Preferably, a guide ring is fixedly connected to the top of the base outside the pressure ring, a slide buckle is fixedly connected to the outer wall of the pressure ring, and the slide buckle is slidably connected to the outer wall of the guide ring.

[0015] Preferably, the detection gas cylinder is attached to the top of the detection disc, a piston column is slidably connected to the detection gas cylinder, a spring for resetting is arranged between the detection gas cylinder and the inner wall of the piston column, and an automatic pressure relief valve is arranged in the piston column.

[0016] By the above technical scheme, the silicone rubber diaphragm air tightness testing machine provided by the present application has at least the following beneficial effects:

[0017] Firstly, when the present application is actually operated, multiple detection grooves are arranged, so that when the diaphragm in one of the detection grooves is being detected, the diaphragm in other detection grooves can be taken out, thereby enabling uninterrupted detection and replacement of the diaphragm, and the intermittent switching of the detection grooves under the cooperation of the intermittent mechanism greatly improves the detection efficiency.

[0018] The utility model discloses a kind of silicon rubber membrane air-tightness testing machines, as shown in figure BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are used to provide further understanding of the utility model, and constitute part of the present application:

[0020] Figure 1 It is the overall structure schematic diagram of the utility model;

[0021] Figure 2 It is the structure schematic diagram of intermittent mechanism in the utility model;

[0022] Figure 3 It is the structure schematic diagram of pressurizing mechanism in the utility model;

[0023] Figure 4 It is the structure schematic diagram of detection air cylinder and piston column in the utility model.

[0024] In the drawing: 1, base; 2, detection disc; 21, detection groove; 22, water tank; 3, detection air cylinder; 4, piston column; 5, pressurizing mechanism; 51, rotating rod; 52, guide ring; 53, compression ring; 54, slide buckle; 6, intermittent mechanism; 61, rotating disc; 62, guide groove; 63, dial lever; 64, limit disc; 65, limit arc. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.

[0026] A kind of silicon rubber membrane air-tightness testing machine, as shown in figure Figure 1 Figure 4 ​As shown, including the base 1, the top of the base 1 is provided with detection disc 2, the top of the detection disc 2 is provided with four detection groove 21, and the four detection groove 21 is arranged in an annular array, the center of the detection disc 2 is provided with a water tank 22, the base 1 is located in one of the detection groove 21 is provided with detection cylinder 3, the bottom of the detection disc 2 is provided with intermittent mechanism 6, for switching detection groove 21, the top of the base 1 is provided with pressurizing mechanism 5, for controlling the piston column 4 lifting, intermittent mechanism 6 includes a rotating disc 61, rotating disc 61 is fixedly connected to the bottom of the detection disc 2, rotating disc 61 is provided with four guide groove 62, the top of the base 1 is rotatably connected with the lever 63, and the inside of the base 1 is provided with a servo motor for driving the rotation of the lever 63, and the lever 63 is matched with the guide groove 62, the bottom of the rotating disc 61 is fixedly connected with the limiting disc 64, the bottom of the lever 63 is rotatably connected with the limiting arc 65, and the limiting arc 65 is matched with the limiting disc 64.

[0027] In this embodiment, by setting multiple detection groove 21, when one of the detection groove 21 in the diaphragm is detected, the diaphragm in the other area of the detection groove 21 can be taken out, so as to replace the diaphragm without interruption, and the intermittent switching of the detection groove 21 under the cooperation of the intermittent mechanism 6 greatly improves the detection efficiency. In actual operation, the servo motor drives the rotation of the lever 63, and the lever 63 rotates one circle and slides into the guide groove 62. Under the cooperation of the sliding of the lever 63 in the inner wall of the guide groove 62, the detection disc 2 is rotated by 90 degrees, the different detection grooves 21 are switched for detection, and under the cooperation of the limiting arc 65 and the limiting disc 64, the gap of the limiting arc 65 is matched with the limiting disc 64 to release the detection disc 2, so that the detection disc 2 can rotate, and when the lever 63 is separated from the guide groove 62, the limiting arc 65 is released from the limiting disc 64 to facilitate the positioning of the detection disc 2, avoid the rotation of the detection disc 2 due to inertia, and avoid the deviation of the guide groove 62.

[0028] As shown in Figure 1 , Figure 3 , Figure 4 , preferably, the pressurizing mechanism 5 includes a rotating rod 51, the rotating rod 51 is fixedly connected to the top of the rotating disc 61, the outer wall of the rotating rod 51 is slidably connected with the pressure ring 53 through the key groove, the top of the base 1 is fixedly connected with the guide ring 52 outside the pressure ring 53, the outer wall of the pressure ring 53 is fixedly connected with the slide buckle 54, and the slide buckle 54 is slidably connected with the outer wall of the guide ring 52, the detection cylinder 3 is matched with the top of the detection disc 2, the detection cylinder 3 is slidably connected with the piston column 4, the position between the detection cylinder 3 and the inner wall of the piston column 4 is provided with a spring for resetting, the inside of the piston column 4 is provided with an automatic pressure relief valve, the water tank 22 is communicated with the detection groove 21, and a one-way valve is arranged in the communication pipeline for preventing liquid from flowing into the detection groove 21, and the bottom of the detection groove 21 is a mesh structure.

[0029] In this embodiment, when the dial lever 63 rotates, the rotating lever 51 is also driven to rotate, and the pressing ring 53 is also driven to rotate through the rotating lever 51. When the sliding buckle 54 on the outer wall of the pressing ring 53 slides to the recessed portion of the guide ring 52, the pressing ring 53 will sink together with the sliding buckle 54, so that the pressing ring 53 extrudes the piston column 4. The sinking piston column 4 will extrude the air in the detection cylinder 3 to press the diaphragm in the detection groove 21. If the diaphragm is not airtight, the extruded air will pass through the diaphragm and enter the channel below the diaphragm in the detection groove 21, so that bubbles appear in the liquid in the water tank 22. In this way, whether the diaphragm is leaking or not can be determined. When the diaphragm is intact, the air will be discharged through the automatic pressure relief valve arranged in the piston column 4.

[0030] The silicon rubber diaphragm airtightness testing machine of the utility model in use, through servo motor drive dial lever 63 rotation, dial lever 63 every rotation a circle will slip into guide groove 62, and in the cooperation of dial lever 63 in guide groove 62 inner wall sliding, push detection disc 2 rotates ninety degrees, switch different detection groove 21 and detect, and in the cooperation of limiting arc 65 and limiting disc 64, make every time switch guide groove 62, the notch of limiting arc 65 and limiting disc 64 fit and remove to detection disc 2, make detection disc 2 can rotate, and in dial lever 63 disengagement guide groove 62, limiting arc 65 will limiting disc 64 remove, to facilitate the positioning of detection disc 2, avoid detection disc 2 because of inertia and rotate, make guide groove 62 appear the situation of deviation, when dial lever 63 rotates, the rotating lever 51 is also driven to rotate, and the pressing ring 53 is also driven to rotate through the rotating lever 51. When the sliding buckle 54 on the outer wall of the pressing ring 53 slides to the recessed portion of the guide ring 52, the pressing ring 53 will sink together with the sliding buckle 54, so that the pressing ring 53 extrudes the piston column 4. The sinking piston column 4 will extrude the air in the detection cylinder 3 to press the diaphragm in the detection groove 21. If the diaphragm is not airtight, the extruded air will pass through the diaphragm and enter the channel below the diaphragm in the detection groove 21, so that bubbles appear in the liquid in the water tank 22. In this way, whether the diaphragm is leaking or not can be determined. When the diaphragm is intact, the air will be discharged through the automatic pressure relief valve arranged in the piston column 4.

[0031] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silicone rubber diaphragm air tightness testing machine comprising a base (1) characterised in that: The top of the base (1) is provided with a detection disc (2), the top of the detection disc (2) is provided with four detection grooves (21), and the four detection grooves (21) are arranged in an annular array, a water groove (22) is arranged at the center of the detection disc (2), and the base (1) is provided with a detection air cylinder (3) above one of the detection grooves (21); The bottom of the detection disc (2) is provided with an intermittent mechanism (6) for switching the detection grooves (21); The top of the base (1) is provided with a pressurizing mechanism (5) for controlling the lifting of the piston column (4).

2. A silicone rubber diaphragm air tightness testing machine according to claim 1, characterized in that: The intermittent mechanism (6) comprises a rotating disc (61) fixedly connected to the bottom of the detection disc (2), four guide grooves (62) are formed in the rotating disc (61), a push rod (63) is rotatably connected to the top of the base (1), a servo motor is arranged in the base (1) to drive the rotation of the push rod (63), and the push rod (63) moves in cooperation with the guide grooves (62).

3. A machine for testing the air tightness of a silicone rubber diaphragm according to claim 2, characterised in that: The bottom of the rotating disc (61) is fixedly connected with a limiting disc (64), the bottom of the push rod (63) is rotatably connected with a limiting arc (65), and the limiting arc (65) moves in cooperation with the limiting disc (64).

4. The silicone rubber diaphragm air tightness testing machine according to claim 1, characterized in that: The water groove (22) is communicated with the detection groove (21), and a one-way valve is arranged in the communicated pipeline to prevent liquid from flowing into the detection groove (21), and the bottom of the detection groove (21) is in a mesh structure.

5. A machine for testing the air tightness of a silicone rubber diaphragm according to claim 3, characterised in that: The pressurizing mechanism (5) comprises a rotating rod (51) fixedly connected to the top of the rotating disc (61), and a pressure ring (53) is radially and slidably connected to the outer wall of the rotating rod (51) through a key groove.

6. A silicone rubber diaphragm air tightness testing machine according to claim 5, characterized in that: The top of the base (1) is fixedly connected with a guide ring (52) outside the pressure ring (53), the outer wall of the pressure ring (53) is fixedly connected with a sliding buckle (54), and the sliding buckle (54) is slidably connected with the outer wall of the guide ring (52).

7. A silicone rubber diaphragm air tightness testing machine according to claim 1, characterized in that: The detection air cylinder (3) is attached to the top of the detection disc (2), the detection air cylinder (3) is slidably connected with a piston column (4), a spring for resetting is arranged between the detection air cylinder (3) and the inner wall of the piston column (4), and the inner portion of the piston column (4) is provided with an automatic pressure relief valve.

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