CN210802790U

CN210802790U - Air tightness detection device

Info

Publication number: CN210802790U
Application number: CN201922235218.6U
Authority: CN
Inventors: 周伟; 荣朝运; 魏杰; 汪伟
Original assignee: Shanghai Jingzhi Industry Co ltd
Current assignee: Shanghai Jingzhi Industry Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-06-19
Anticipated expiration: 2029-12-13

Abstract

The utility model belongs to the technical field of auto parts manufacturing, a gas tightness detection device is disclosed. The air tightness detection device comprises a clamping mechanism, a plugging mechanism and a detection mechanism, wherein the clamping mechanism can selectively clamp two ends of a workpiece; the plugging mechanisms are positioned at two sides of the clamping mechanism and can selectively seal and plug two ends of the workpiece; the detection mechanism is communicated with one end of the plugging mechanism and is filled with gas for detecting the air tightness of the workpiece. Through the mutual cooperation of the clamping mechanism, the plugging mechanism and the detection mechanism, the workpiece can be fixed through the clamping mechanism, the workpiece is prevented from moving when the plugging mechanism moves towards the direction close to the workpiece and plugs the workpiece, the sealing plugging effect of the plugging mechanism is influenced, the detection mechanism can be used for achieving air tightness detection on the workpiece in a sealing state, the detection structure is more accurate, and the detection precision is improved.

Description

Air tightness detection device

Technical Field

The utility model relates to an auto parts manufacturing technical field especially relates to an air tightness detection device.

Background

The oil return pipe of the automobile is used as a very important part of the automobile, has high requirement on air tightness and is not allowed to leak in the use process. Therefore, after the oil return pipe is produced, the air tightness detection is required to meet the quality requirement.

The existing oil return pipe air tightness detection equipment is generally used for plugging two ends of an oil return pipe by using plugs to form a sealed environment, then the oil return pipe is communicated with an external air source, and whether air leakage occurs or not is observed. Because the pipeline of the oil return pipe is not a straight pipeline but a bent pipeline in order to be matched with other automobile parts, the positioning of the oil return pipe is difficult to realize, the air tightness between the plug and the oil return pipe is poor, and the measurement precision and the accuracy are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air tightness detection device strengthens the leakproofness that the work piece detected to improve measurement accuracy and accuracy.

To achieve the purpose, the utility model adopts the following technical proposal:

an airtightness detection apparatus comprising:

the clamping mechanism can selectively clamp two ends of a workpiece;

the plugging mechanisms are positioned on two sides of the clamping mechanism and can selectively seal and plug two ends of the workpiece;

and the detection mechanism is communicated with one end of the plugging mechanism and is filled with gas for detecting the air tightness of the workpiece.

Preferably, the clamping mechanism comprises an air inlet clamping assembly and an air outlet clamping assembly, the air inlet clamping assembly is used for clamping the air inlet end of the workpiece, and the air outlet clamping assembly is used for clamping the air outlet end of the workpiece.

Preferably, the intake clamping assembly comprises a carrier for carrying a workpiece, an intake clamp and a support block for carrying the intake clamp.

Preferably, the air inlet clamp comprises a base arranged on the supporting block, a driving handle rotationally connected to the base, a connecting rod and a driven rod, two ends of the connecting rod are rotationally connected to the driving handle and the driven rod respectively, one end of the driven rod is rotationally connected to the base, and a pressing block used for pressing the workpiece is arranged at the other end of the driven rod.

Preferably, the plugging mechanism comprises an air inlet plugging component and an air outlet plugging component, the air inlet plugging component is used for plugging the air inlet end of the workpiece, and the air outlet plugging component is used for plugging the air outlet end of the workpiece.

Preferably, the air inlet plugging component comprises a supporting block, a driving part arranged on the supporting block and an air inlet plug connected to the output end of the driving part, the detection mechanism is communicated with the air inlet plug, and the driving part can drive the air inlet plug to selectively plug the air inlet end of the workpiece.

Preferably, the driving part comprises a base platform arranged on the supporting block, a driving rocker arm rotatably connected to the base platform, an intermediate rod and a guide post connected to the air inlet plug, and two ends of the intermediate rod are rotatably connected to the driving rocker arm and the guide post respectively.

Preferably, the driving part further comprises a guide sleeve arranged on the base platform, and the guide column penetrates through the guide sleeve and is in sliding fit with the guide sleeve.

Preferably, the detection mechanism comprises an airflow shunting block and an airtight detector communicated with the airflow shunting block, and an air inlet connector communicated with the airflow shunting block is arranged on the air inlet plug.

Preferably, the workpiece positioning device further comprises a positioning block, and a positioning groove for accommodating the workpiece is formed in the top surface of the positioning block.

The utility model has the advantages that:

the utility model provides a gas tightness detection device, when the work piece needs the gas tightness to examine time measuring, earlier press from both sides the both ends of tight work piece with clamping mechanism, play fixed spacing purpose, then the both ends of shutoff work piece can the selectivity be sealed to shutoff mechanism for the work piece is in encapsulated situation, and detection mechanism lets in gas to the work piece through shutoff mechanism this moment for detect the gas tightness of work piece. Through the mutual cooperation of the clamping mechanism, the plugging mechanism and the detection mechanism, the workpiece can be fixed through the clamping mechanism, the workpiece is prevented from moving when the plugging mechanism moves towards the direction close to the workpiece and plugs the workpiece, the sealing plugging effect of the plugging mechanism is influenced, the detection mechanism can be used for achieving air tightness detection on the workpiece in a sealing state, the detection structure is more accurate, and the detection precision is improved.

Drawings

Fig. 1 is a schematic structural view of the air tightness detecting device of the present invention;

FIG. 2 is a schematic structural view of the air tightness detecting device of the present invention with a workpiece hidden for detection;

FIG. 3 is a schematic structural view of the air inlet clamp of the air tightness detecting device of the present invention;

fig. 4 is a schematic structural diagram of a driving part in the air tightness detecting device of the present invention.

In the figure:

1. a clamping mechanism; 2. a plugging mechanism; 3. a detection mechanism; 4. positioning blocks; 5. a test platform; 600. a workpiece;

11. an intake clamping assembly; 12. an exhaust clamping assembly;

111. a carrier; 112. an air inlet clamp; 113. a support block;

1121. a base; 1122. a drive handle; 1123. a connecting rod; 1124. a driven lever; 1125. briquetting; 1126. a screw;

21. an air inlet plugging component; 22. an exhaust plugging component;

211. a fixed block; 212. a drive member; 213. an air inlet plug;

2121. a base station; 2122. a driving rocker arm; 2123. an intermediate lever; 2124. a guide post; 2125. a guide sleeve;

31. an airflow diverter block; 32. an air-tightness detector;

51. a handle.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment provides an air tightness detection device, which is used for detecting the air tightness of a pipeline workpiece 600, wherein the workpiece 600 specifically refers to an automobile oil return pipe, as shown in fig. 1, the air tightness detection device comprises a test platform 5, and a clamping mechanism 1, a plugging mechanism 2 and a detection mechanism 3 which are all arranged on the test platform 5, the test platform 5 is of a cuboid structure, and the test platform 5 can simultaneously detect two workpieces 600, so that the test efficiency is improved; for ease of operation, handles 51 are provided at both ends of the test platform 5. Clamping mechanism 1 can the selective both ends of pressing from both sides tight work piece 600, realizes the clamp of work piece 600 and fixes, and shutoff mechanism 2 is located clamping mechanism 1's both sides, and shutoff mechanism 2 can the selective both ends of shutoff work piece 600, forms confined sealed environment, and detection mechanism 3 is linked together and lets in gas to it with the one end of shutoff mechanism 2, and after letting in gas a period, can judge whether leak gas to work piece 600 according to the last atmospheric pressure change condition of detection mechanism 3 to realize the gas tightness detection to work piece 600.

When the workpiece 600 needs to be subjected to air tightness detection, the clamping mechanism 1 clamps two ends of the workpiece 600 to achieve the purpose of fixing and limiting, then the plugging mechanism 2 seals and plugs two ends of the workpiece 600, so that the workpiece 600 is in a sealed state, and at the moment, the detection mechanism 3 introduces air into the workpiece 600 through the plugging mechanism 2 and is used for detecting the air tightness of the workpiece 600. Through the mutual cooperation of the clamping mechanism 1, the plugging mechanism 2 and the detection mechanism 3, the workpiece 600 can be fixed through the clamping mechanism 1, the situation that the plugging mechanism 2 moves towards the direction close to the workpiece 600 and plugs the workpiece 600 is avoided, the workpiece 600 moves, the sealing plugging effect of the plugging mechanism 2 is influenced, the detection mechanism 3 can be used for detecting the air tightness of the workpiece 600 in a sealing state, the detection structure is more accurate, and the detection precision is improved.

Specifically, as shown in fig. 1, the detection mechanism 3 specifically includes an airflow splitting block 31 and a gas tightness detector 32, the gas tightness detector 32 is used as a detection device, and the gas tightness detector 32 is communicated with the airflow splitting block 31, so that the gas tightness detector 32 introduces gas into the workpiece 600 through the airflow splitting block 31, and after the gas is introduced for a period of time, the change of the gas pressure on the gas tightness detector 32 is observed, and whether the workpiece 600 leaks gas is determined. The airflow shunting block 31 serves as a transfer component, and the airflow shunting block 31 can shunt gas and is respectively communicated with the two workpieces 600, so that the two workpieces 600 can be detected simultaneously, the detection time is saved, and the detection efficiency is improved.

In order to clamp and seal the air inlet end and the air outlet end of the workpiece 600, as shown in fig. 1, the clamping mechanism 1 includes an air inlet clamping assembly 11 and an air outlet clamping assembly 12, wherein the air inlet clamping assembly 11 is used for clamping the air inlet end of the workpiece 600, and the air outlet clamping assembly 12 is used for clamping the air outlet end of the workpiece 600. Because the workpiece 600 is a bent pipe, when the length of the workpiece 600 is long, in order to further enhance the fixing effect, the testing platform 5 is further provided with a positioning block 4, the positioning block 4 is located between the air intake clamping assembly 11 and the air exhaust clamping assembly 12, and the top surface of the positioning block 4 is provided with a positioning groove for accommodating the workpiece 600, so as to limit the workpiece 600. Through mutually supporting of the air inlet clamping component 11, the air outlet clamping component 12 and the positioning block 4, the workpieces 600 are respectively fixed at two ends and the middle part, so that the workpieces 600 are prevented from being displaced greatly, and the air inlet end and the air outlet end of the workpieces 600 are accurately plugged by the plugging mechanism 2.

Further, the plugging mechanism 2 includes an air inlet plugging component 21 and an air outlet plugging component 22, the air inlet plugging component 21 is used for plugging an air inlet end of the workpiece 600, and the air outlet plugging component 22 is used for plugging an air outlet end of the workpiece 600. The clamping and the plugging of the air inlet end of the workpiece 600 are realized by arranging the air inlet clamping component 11 and the air inlet plugging component 21, and the clamping and the plugging of the air outlet end of the workpiece 600 are realized by arranging the air outlet clamping component 12 and the air outlet plugging component 22.

For convenience of description, taking the detection of one of the workpieces 600 as an example, as shown in fig. 2, the intake clamping assembly 11 includes a carrier 111, an intake clamp 112 and a support block 113. The carrier 111 is of a cuboid structure, a groove for placing the workpiece 600 is formed in the top surface of the carrier 111, the carrier 111 is used for bearing the workpiece 600, and the supporting block 113 is of a cuboid structure and used for bearing the air inlet clamp 112. The air inlet clamp 112 is used as a clamping component of the workpiece 600, and is matched with the carrier 111 to clamp the air inlet end of the workpiece 600.

Further, as shown in fig. 3, the intake clamp 112 specifically includes a base 1121, a driving handle 1122, a connecting rod 1123, and a driven rod 1124 disposed on the supporting block 113, one end of the driving handle 1122 is a force application end, the other end of the driving handle 1122 is a connecting end, the connecting end is rotatably connected to the base 1121, the connecting rod 1123 is a driving rod, and two ends of the connecting rod 1123 are rotatably connected to a middle portion of the driving handle 1122 and a middle portion of the driven rod 1124, respectively. Meanwhile, one end of the driven rod 1124 is rotatably connected to the base 1121, the other end is provided with a pressing block 1125 for abutting against the workpiece 600, and the pressing block 1125 is in threaded connection with the driven rod 1124 through a stud 1126 and is screwed and fixed through a nut.

When the air inlet end of the workpiece 600 needs to be installed and clamped, the driving handle 1122 is rotated towards the direction close to the workpiece 600, and under the action of the driving handle 1122, the connecting rod 1123 drives the driven rod 1124 to also rotate towards the direction close to the workpiece 600, so that the pressing block 1125 is pressed against the top surface of the workpiece 600, and the workpiece 600 is limited and fixed on the carrier 111. When the air inlet end of the workpiece 600 needs to be detached, the driving handle 1122 is rotated in the opposite direction, and under the action of the driving handle 1122, the connecting rod 1123 drives the driven rod 1124 to rotate in the direction away from the workpiece 600, so that the pressing block 1125 is separated from the top surface of the workpiece 600, and the workpiece 600 is conveniently taken out of the carrier 111. By adopting the mode, the installation and the disassembly are convenient, so that the aim of facilitating the maintenance is fulfilled.

It should be noted that the intake clamping assembly 11 and the exhaust clamping assembly 12 have similar structures, and the difference is only that the intake clamping assembly 11 clamps the intake end of the workpiece 600, and the exhaust clamping assembly 12 clamps the exhaust end of the workpiece 600, and the rest of the structures are not described again.

After the air inlet end of the workpiece 600 is clamped, the air inlet end of the workpiece 600 needs to be plugged, as shown in fig. 2, the air inlet plugging assembly 21 specifically includes a fixed block 211, a driving component 212, and an air inlet plug 213. The fixing block 211 is a rectangular parallelepiped structure, and the fixing block 211 is disposed on the testing platform 5 and used for bearing and supporting the driving component 212. The driving component 212 is used as a power source, and the air inlet plug 213 is connected to the output end of the driving component 212, so that the air inlet plug 213 moves towards the direction close to or away from the workpiece 600 under the action of the driving component 212, and the selective plugging of the air inlet end of the workpiece 600 is realized.

Further, as shown in fig. 4, the driving part 212 includes a base 2121, a driving rocker arm 2122, an intermediate rod 2123, and a guide post 2124 provided on the fixed block 211. One end of the driving rocker arm 2122 is a force applying end, the other end of the driving rocker arm 2122 is a connecting end, the connecting end is rotatably connected to the base 2121, two ends of the intermediate rod 2123 are rotatably connected to the middle portions of the guide post 2124 and the driving rocker arm 2122, respectively, one end of the guide post 2124 is rotatably connected to the intermediate rod 2123, and the other end is connected to the air inlet plug 213.

In order to provide a guiding effect for the guiding post 2124, a guiding sleeve 2125 is further disposed on the base 2121, and the guiding post 2124 is inserted into the guiding sleeve 2125, so that the guiding post 2124 can slide relative to the guiding sleeve 2125, and the air inlet end of the workpiece 600 is conveniently plugged by the air inlet plug 213. Furthermore, a positioning hole is formed in the side of the air inlet plug 213 away from the guide post 2124, and the air inlet end of the workpiece 600 can extend into the positioning hole to plug the air inlet end.

In order to enhance the sealing effect of the workpiece 600, a sealing rubber ring is disposed on the outer circumference of the air inlet end of the workpiece 600 to enhance the air tightness between the air inlet end and the air inlet plug 213. Meanwhile, an air inlet joint communicated with the airflow splitting block 31 is arranged on the periphery of the air inlet plug 213, so that the air inlet plug 213 is conveniently communicated with the airflow splitting block 31.

When the air inlet end of the workpiece 600 needs to be plugged, the driving rocker arm 2122 is rotated towards the direction close to the workpiece 600, and under the action of the driving rocker arm 2122, the middle rod 2123 drives the guide post 2124 to move towards the direction close to the workpiece 600, so that the air inlet plug 213 is plugged at the air inlet end of the workpiece 600; when the air inlet end of the workpiece 600 needs to be removed, the driving rocker arm 2122 rotates in the opposite direction, and under the action of the driving rocker arm 2122, the middle rod 2123 drives the guide post 2124 to move away from the workpiece 600, so as to separate the air inlet plug 213 from the air inlet end of the workpiece 600. By adopting the mode, the installation and the disassembly are convenient, so that the aim of facilitating the maintenance is fulfilled.

It should be particularly noted that the air intake plugging component 21 and the air exhaust plugging component 22 have similar structures, and the difference is that the air intake plugging component 21 plugs the air intake end of the workpiece 600, the air exhaust plugging component 22 plugs the air exhaust end of the workpiece 600, and only the outer wall of the air intake plug 213 is provided with an air intake joint, and the rest structures are not described again.

The working process of the air tightness detection device provided by the embodiment is as follows:

1) when the workpiece 600 needs to be subjected to air tightness detection, the driving handle 1122 is rotated towards the direction close to the workpiece 600, the driven rod 1124 is driven by the connecting rod 1123 to rotate towards the direction close to the workpiece 600 under the action of the driving handle 1122, so that the pressing block 1125 is pressed against the top surface of the workpiece 600, the workpiece 600 is limited and fixed on the carrier 111, and after the air inlet clamping assembly 11 clamps the air inlet end of the workpiece 600, the air outlet end of the workpiece 600 is clamped by the air outlet clamping assembly 12 in the same manner;

2) the driving rocker arm 2122 rotates towards the direction close to the workpiece 600, under the action of the driving rocker arm 2122, the guide post 2124 is driven by the intermediate rod 2123 to move towards the direction close to the workpiece 600, so that the air inlet end of the workpiece 600 is plugged by the air inlet plug 213, and after the air inlet end of the workpiece 600 is plugged by the air inlet plugging component 21, the air outlet end of the workpiece 600 is plugged by the air outlet plugging component 22 in the same way;

3) and (3) introducing gas into the gas inlet joint through the gas flow splitter block 31 by the gas tightness detector 32, observing the change of the gas pressure on the gas tightness detector 32 after the gas is introduced for a period of time, and judging whether the workpiece 600 leaks gas.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An airtightness detection apparatus, comprising:

the clamping mechanism (1), the said clamping mechanism (1) can clamp the both ends of the work piece (600) selectively;

the plugging mechanisms (2) are positioned on two sides of the clamping mechanism (1), and the plugging mechanisms (2) can selectively seal and plug two ends of the workpiece (600);

and the detection mechanism (3) is communicated with one end of the plugging mechanism (2), and is used for introducing gas into the plugging mechanism for detecting the air tightness of the workpiece (600).

2. The airtightness detection apparatus according to claim 1, wherein the clamping mechanism (1) includes an air intake clamping assembly (11) and an air exhaust clamping assembly (12), the air intake clamping assembly (11) being configured to clamp an air intake end of the workpiece (600), and the air exhaust clamping assembly (12) being configured to clamp an air exhaust end of the workpiece (600).

3. The airtightness detection apparatus according to claim 2, wherein the intake clamping assembly (11) includes a carrier (111) for carrying the workpiece (600), an intake clamp (112) for clamping an intake end of the workpiece, and a support block (113) for carrying the intake clamp (112).

4. The airtightness detection apparatus according to claim 3, wherein the air inlet clamp (112) includes a base (1121) disposed on the support block (113), a driving handle (1122) rotatably connected to the base (1121), a connecting rod (1123), and a driven rod (1124), two ends of the connecting rod (1123) are rotatably connected to the driving handle (1122) and the driven rod (1124), respectively, one end of the driven rod (1124) is rotatably connected to the base (1121), and the other end is provided with a pressing block (1125) for pressing the workpiece (600).

5. The airtightness detection apparatus according to any one of claims 1 to 4, wherein the plugging mechanism (2) includes an air inlet plugging member (21) and an air outlet plugging member (22), the air inlet plugging member (21) being configured to plug an air inlet end of the workpiece (600), and the air outlet plugging member (22) being configured to plug an air outlet end of the workpiece (600).

6. The airtightness detection apparatus according to claim 5, wherein the air inlet blocking assembly (21) includes a fixed block (211), a driving member (212) disposed on the fixed block (211), and an air inlet blocking head (213) connected to an output end of the driving member (212), the detection mechanism (3) is communicated with the air inlet blocking head (213), and the driving member (212) can drive the air inlet blocking head (213) to selectively block an air inlet end of the workpiece (600).

7. The airtightness detection apparatus according to claim 6, wherein the driving member (212) includes a base (2121) provided on the fixed block (211), a driving rocker (2122) rotatably coupled to the base (2121), an intermediate rod (2123), and a guide post (2124) coupled to the air intake plug (213), and both ends of the intermediate rod (2123) are rotatably coupled to the driving rocker (2122) and the guide post (2124), respectively.

8. The airtightness detection apparatus according to claim 7, wherein the driving member (212) further comprises a guide sleeve (2125) provided on the base (2121), and the guide post (2124) is inserted into the guide sleeve (2125) and slidably fitted thereto.

9. The airtightness detection apparatus according to claim 7, wherein the detection mechanism (3) includes an airflow splitting block (31) and an airtightness detector (32) communicated with the airflow splitting block (31), and an air inlet connector communicated with the airflow splitting block (31) is provided on the air inlet plug (213).

10. The airtightness detection apparatus according to claim 1, further comprising a positioning block (4), wherein a positioning groove for accommodating the workpiece (600) is formed in a top surface of the positioning block (4).