CN217586196U

CN217586196U - Air tightness detection device

Info

Publication number: CN217586196U
Application number: CN202221185566.2U
Authority: CN
Inventors: 孙成智; 罗同贵; 谢步志
Original assignee: Shenzhen Jvt Technology Co ltd
Current assignee: Shenzhen Jvt Technology Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-14
Anticipated expiration: 2032-05-17

Abstract

The application relates to an air tightness detection device, which comprises a main body frame, a fixed template, a movable template and a lifting cylinder, wherein the main body frame comprises a top plate, a bottom plate and a support column, the fixed template is fixed on the bottom plate, the lifting cylinder is fixed on the top plate, the movable template is fixed on a cylinder shaft of the lifting cylinder, an air tightness cavity for accommodating a product to be detected is arranged on the fixed template and/or the movable template, the air tightness cavity is sealed when the movable template is tightly pressed on the fixed template, an air vent is arranged on the fixed template or the movable template, and the air vent is communicated with the air tightness cavity; the air tightness test can be completed only by putting a product to be tested into the air-tight cavity, so the air-tight test device is very suitable for being applied to products which cannot be provided with an inflation hole, the lifting cylinder is arranged, the movable template can be driven to lift, semi-automatic operation is realized, the test efficiency is improved, the air-tight cavity is ensured to have good air tightness by reasonably setting the pressing force of the lifting cylinder, and the test accuracy is further ensured.

Description

Air tightness detection device

Technical Field

The application relates to the technical field of air tightness detection, in particular to an air tightness detection device.

Background

As is well known, many products of enterprise's production need carry out the gas tightness before leaving the factory and detect, general gas tightness detection scheme is set up one on the product and aerifys to product inside through aerifing the hole, wait for a period of time after aerifing the completion after, detect the inside atmospheric pressure change of product, if the pressure drop is great, it is serious to explain product gas leakage, if there is not the pressure drop or the pressure drop is very little, it is good to explain product gas tightness, this kind of detection mode detects the precision height, easy operation can adapt to current enterprise to assembly line production requirement. However, the test method is only suitable for products which are provided with the inflation holes or products which are allowed to be provided with the inflation holes, and the method cannot be adopted for products which are not allowed to be provided with the inflation holes. The inventor considers that a new air tightness detection scheme needs to be developed for products which are not allowed to be provided with air inflation holes so as to meet the production requirements of current enterprises on the production line.

SUMMERY OF THE UTILITY MODEL

To know the technical problem that the product that must not allow to set up the gas charging hole does not have good gas tightness detection scheme, the application provides a gas tightness detection device.

The following technical scheme is adopted:

the main body frame comprises a top plate, a bottom plate and a supporting column, the fixed die plate is fixed on the bottom plate, the lifting cylinder is fixed on the top plate, the movable die plate is fixed on a cylinder shaft of the lifting cylinder, an airtight cavity used for containing a product to be detected is arranged on the fixed die plate and/or the movable die plate, the airtight cavity is sealed when the movable die plate is tightly pressed on the fixed die plate, and an air vent is arranged on the fixed die plate or the movable die plate and communicated with the airtight cavity and used for being communicated with external inflation equipment and air pressure detection equipment.

Through adopting above-mentioned technical scheme, owing to just need put into the airtight die cavity to the product that awaits measuring and just can accomplish the gas tightness test, so be fit for very much being applied to the product that can't set up the gas charging hole, owing to set up the lift cylinder again, can drive the movable mould board and go up and down, realized semi-automatization operation, improved efficiency of software testing, through the pressfitting power of reasonable setting up the lift cylinder, guarantee that airtight die cavity has good gas tightness, and then guarantee the accuracy of test.

Preferably, the air tightness detection device further comprises an installation plate, the installation plate is fixed on a cylinder shaft of the lifting cylinder, and the movable template is fixed on the installation plate.

Through adopting above-mentioned technical scheme, the mounting panel is used for making things convenient for movable mould board's dismantlement and change, improves gas tightness detection device's the remodelling rate.

Preferably, the number of the lifting cylinders is multiple, the cylinder shafts of all the lifting cylinders are provided with fixing flanges, and the cylinder shafts are fixedly connected with the mounting plate through the fixing flanges.

Through adopting above-mentioned technical scheme, a plurality of lift cylinders can make the pressfitting power of movable mould board and fixed die plate on whole contact surface more even, make the gas tightness of airtight die cavity better, are particularly suitable for the great condition of movable mould board and fixed die plate size.

Preferably, the air tightness detection device further comprises a synchronous plate, and the fixing flanges of all the lifting cylinders are fixed on the synchronous plate.

Through adopting above-mentioned technical scheme, synchronous board is used for guaranteeing that the motion of all lift cylinders has high synchronism, makes the lift action of movable mould board more steady.

Preferably, the fixed die plate is further fixedly provided with an annular sealing ring, and the airtight cavity is kept airtight when the movable die plate is tightly pressed on the fixed die plate.

Through adopting above-mentioned technical scheme, the gas tightness of airtight die cavity can be guaranteed effectively to the ring type seal.

Preferably, a cable avoiding groove is formed in the fixed template and used for leading out a cable of a product to be tested from the airtight cavity.

Through adopting above-mentioned technical scheme, have the cable when the product that awaits measuring to when need drawing forth from airtight die cavity, the groove can hold the cable is dodged to the cable on the fixed die plate, still is used for compressing tightly the cable simultaneously, guarantees the gas tightness of cable pressfitting department.

Preferably, the side of the fixed die plate is also fixedly provided with a cable positioning clamp for positioning a cable of a product to be detected.

Through adopting above-mentioned technical scheme, the cable positioning clamp can carry out the position to the cable of dodging the groove and drawing forth from the cable spacing, and when the movable mould board moved down the pressfitting, the cable was by accurate ground pressing in the groove is dodged to the cable to avoided cable offset to produce pressfitting damage and gas tightness problem.

Preferably, a plurality of positioning parts are arranged in the airtight cavity and used for positioning a plurality of products to be tested.

By adopting the technical scheme, a plurality of products to be detected can be accommodated and positioned in the airtight cavity, the air tightness of the products to be detected can be detected at one time, and the detection efficiency is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the air tightness test can be completed only by putting a product to be tested into the air-tight cavity, so the air-tight test device is very suitable for being applied to products which cannot be provided with an inflation hole, the lifting cylinder is arranged, the movable template can be driven to lift, semi-automatic operation is realized, the test efficiency is improved, the air-tight cavity is ensured to have good air tightness by reasonably setting the pressing force of the lifting cylinder, and the test accuracy is further ensured.

2. When the product to be measured is provided with the cable and needs to be led out from the airtight cavity, the cable avoiding groove in the fixed die plate can accommodate the cable and is also used for compressing the cable, so that the air tightness of the cable pressing part is ensured.

3. The cable locating clip can carry out position spacing to dodging the cable that the groove was drawn forth from the cable, and when the movable mould board moved down the pressfitting, the cable was dodged the inslot at the cable by accurate pressfitting to cable offset has been avoided producing pressfitting damage and gas tightness problem.

Drawings

Fig. 1 is a front view of a first embodiment of the air-tightness detection device according to the present application.

Fig. 2 is a front view of an embodiment of the air tightness detecting device according to the present application in a pressed state.

Fig. 3 is a side view of a first embodiment of the air-tightness detection device according to the present application.

Fig. 4 is a perspective view of a first embodiment of the air-tightness detecting device according to the present application.

Fig. 5 is a schematic view illustrating taking and placing of a product to be tested according to an embodiment of the air tightness detecting device of the present application.

Fig. 6 is a perspective view of a second embodiment of the air-tightness detecting device according to the present application.

Fig. 7 is a schematic view of a second device for picking and placing a product to be tested according to an embodiment of the air tightness detecting device of the present application.

Description of reference numerals: 1. a main body frame; 11. a top plate; 12. a base plate; 13. a support pillar; 2. fixing a template; 21. an annular seal ring; 22. a cable avoidance slot; 23. a cable positioning clamp; 3. moving the template; 4. a lifting cylinder; 41. a cylinder shaft; 5. an airtight cavity; 6. a vent hole; 7. mounting a plate; 8. a fixed flange; 9. a product to be tested; 91. a cable; 10. a synchronization plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

As an embodiment one of the airtightness detection apparatus, please refer to fig. 1 and fig. 5, including main body frame 1, fixed die plate 2, movable die plate 3 and lift cylinder 4, main body frame 1 includes roof 11, bottom plate 12 and support column 13, fixed die plate 2 is fixed on bottom plate 12, lift cylinder 4 is fixed on roof 11, movable die plate 3 is fixed on cylinder shaft 41 of lift cylinder 4, be equipped with airtight die cavity 5 that is used for holding product 9 to be measured on fixed die plate 2 and/or the movable die plate 3, movable die plate 3 makes when compressing tightly on fixed die plate 2 airtight die cavity 5 is sealed, be equipped with air vent 6 on fixed die plate 2 or the movable die plate 3, air vent 6 communicates with airtight die cavity 5 for communicate with outside inflation apparatus and pneumatic pressure detection apparatus.

The detection principle of the air tightness detection device is as follows: the airtight cavity 5 is used for placing a product 9 to be detected, when the movable die plate 3 is tightly pressed on the fixed die plate 2, a certain amount of gas is filled into the airtight cavity 5 through the vent holes 6, if the airtightness of the product 9 to be detected is poor, part of the gas can enter the product 9 to be detected, so that the air pressure in the airtight cavity 5 can be reduced, when the external air pressure detection equipment detects that the pressure drop exceeds a threshold value, the airtight cavity is judged to be unqualified, if the airtightness of the product 9 to be detected is good, the gas entering the product 9 to be detected is little or even no, so that the pressure drop of the air pressure in the airtight cavity 5 is very small or zero, and when the external air pressure detection equipment detects that the pressure drop does not exceed the threshold value, the airtight cavity is judged to be qualified.

Because only need put into airtight die cavity 5 to the product 9 that awaits measuring and just can accomplish the gas tightness test, so be particularly suitable for being applied to the product that can't set up the hole of aerifing, owing to set up lift cylinder 4 again, can drive movable mould board 3 and go up and down, realized semi-automatization operation, improved efficiency of software testing, through the pressfitting power of reasonable setting lift cylinder 4, guarantee that airtight die cavity 5 has good gas tightness, and then guarantee the accuracy of test.

In this embodiment, referring to fig. 3, the air tightness detecting device further includes a mounting plate 7, the mounting plate 7 is fixed on the cylinder shaft 41 of the lifting cylinder 4, and the movable mold plate 3 is further fixed on the mounting plate 7. The mounting plate 7 is used for facilitating the disassembly and replacement of the movable template 3 and improving the model changing rate of the air tightness detection device.

In this embodiment, referring to fig. 3, the number of the lifting cylinders 4 is multiple, the cylinder shafts 41 of all the lifting cylinders 4 are provided with fixing flanges 8, and the cylinder shafts 41 are fixedly connected with the mounting plate 7 through the fixing flanges 8. The plurality of lifting cylinders 4 can enable the pressing force of the movable mould plate 3 and the fixed mould plate 2 on the whole contact surface to be more uniform, so that the air tightness of the airtight cavity 5 is better, and the movable mould plate is particularly suitable for the condition that the movable mould plate 3 and the fixed mould plate 2 are large in size.

In the present embodiment, referring to fig. 3, the air tightness detecting device further includes a synchronizing plate 10, and the fixing flanges 8 of all the lifting cylinders 4 are fixed on the synchronizing plate 10. The synchronous plate 10 is used for ensuring that the motion of all the lifting cylinders 4 has extremely high synchronism, so that the lifting action of the movable mould plate 3 is more stable.

As a second embodiment of the air tightness detecting device of the present invention, please refer to fig. 6 and 7, which is different from the first embodiment in that the fixed die plate 2 is provided with a cable avoiding groove 22 for leading out a cable 91 of a product 9 to be detected from the airtight cavity 5. When the product 9 to be tested has the cable 91 and needs to be led out from the airtight cavity 5, the cable avoiding groove 22 on the fixed die plate 2 can accommodate the cable 91 and is also used for compressing the cable 91, so that the air tightness of the stitching part of the cable 91 is ensured.

In the present embodiment, referring to fig. 6, the fixed die plate 2 is further provided with an annular seal ring 21, and the airtight cavity 5 is kept airtight when the movable die plate 3 is pressed against the fixed die plate 2. The annular sealing ring 21 can effectively ensure the air tightness of the airtight cavity 5.

In this embodiment, referring to fig. 6, a cable positioning clip 23 is further fixedly disposed on a side surface of the fixed die plate 2, and is used for positioning a cable of the product 9 to be tested. The cable positioning clamp 23 can position-limit the cable led out from the cable avoiding groove 22, and when the movable template 3 moves downwards and is pressed, the cable 91 is accurately pressed in the cable avoiding groove 22, so that the problems of pressing damage and air tightness caused by position deviation of the cable 91 are avoided.

In the first and second embodiments of the present application, a plurality of positioning portions may be disposed in the airtight cavity 5 for positioning a plurality of products to be tested 9; therefore, a plurality of products to be detected 9 can be accommodated and positioned in the airtight cavity 5, the air tightness of the products to be detected 9 can be detected at one time, and the detection efficiency is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The air tightness detection device is characterized by comprising a main body frame (1), a fixed die plate (2), a movable die plate (3) and a lifting cylinder (4), wherein the main body frame (1) comprises a top plate (11), a bottom plate (12) and a support column (13), the fixed die plate (2) is fixed on the bottom plate (12), the lifting cylinder (4) is fixed on the top plate (11), the movable die plate (3) is fixed on a cylinder shaft (41) of the lifting cylinder (4), an air tightness cavity (5) used for containing a product to be detected (9) is arranged on the fixed die plate (2) and/or the movable die plate (3), the air tightness cavity (5) is sealed when the movable die plate (3) is tightly pressed on the fixed die plate (2), an air vent (6) is arranged on the fixed die plate (2) or the movable die plate (3), and the air vent (6) is communicated with the air tightness cavity (5) and is used for being communicated with external inflation equipment and air pressure detection equipment.

2. The airtightness detection apparatus according to claim 1, further comprising a mounting plate (7), wherein the mounting plate (7) is fixed to a cylinder shaft (41) of the lifting cylinder (4), and the movable platen (3) is further fixed to the mounting plate (7).

3. The airtightness detection apparatus according to claim 1, wherein the number of the lifting cylinders (4) is plural, a fixing flange (8) is provided on a cylinder shaft (41) of all the lifting cylinders (4), and the cylinder shaft (41) is fixedly connected to the mounting plate (7) through the fixing flange (8).

4. The tightness detection device according to claim 3, characterized in that it further comprises a synchronization plate (10), the fixing flanges (8) of all the lifting cylinders (4) being fixed to the synchronization plate (10).

5. The airtightness detection apparatus according to claim 1, wherein an annular sealing ring (21) is further fixedly provided on the fixed mold plate (2), so that the airtight cavity (5) is kept airtight when the movable mold plate (3) is pressed against the fixed mold plate (2).

6. The airtightness detection apparatus according to claim 1, wherein the fixed mold plate (2) is provided with a cable-avoiding groove (22) for leading out a cable (91) of the product (9) to be detected from the airtight cavity (5).

7. The airtightness detection apparatus according to claim 6, wherein a cable positioning clip (23) is further fixedly provided on a side surface of the fixed die plate (2), for positioning a cable (91) of the product to be detected (9).

8. The airtightness detection apparatus according to claim 1, wherein a plurality of positioning portions are provided in the airtight cavity (5) for positioning a plurality of products to be detected (9).