CN213874816U

CN213874816U - Airtightness detection jig

Info

Publication number: CN213874816U
Application number: CN202023335911.XU
Authority: CN
Inventors: 山田洋; 邹妮; 颜建国; 孙锦锋
Original assignee: Wuxi Limei Technology Co ltd
Current assignee: Wuxi Limei Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-03
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to an air tightness detection jig, which comprises a bottom plate, wherein supports are arranged on the bottom plate at intervals, a transfer cylinder is arranged on the two supports, and a transfer plate is fixedly arranged at the output end of the transfer cylinder; a sliding rail is arranged between the bottom surface of the transfer plate and the bottom plate; a jig assembly is arranged on the moving support plate, an inverted U-shaped support is arranged across the slide rail, a pressing air cylinder is fixedly arranged on the top surface of the support, and the output end of the pressing air cylinder faces downwards and faces the top end of the jig assembly; the jig assembly comprises a base fixedly mounted with the transfer board, a vertical air column is mounted on the base, an expansion ring and a gasket are sequentially sleeved on the air column, an end cap is sleeved at the top end of the air column above the gasket, and a workpiece is sleeved on the air column from top to bottom; during the use, the downward force of exerting of pressing the cylinder transmits to the expansion ring behind work piece, end cap, packing ring in proper order for the expansion ring is pasted tightly with work piece internal face after the axial deformation compression, realizes the inside airtight sealing before detecting of work piece, and is simple reliable, convenient to use, the practicality is good.

Description

Airtightness detection jig

Technical Field

The utility model belongs to the technical field of airtight check out test set technique and specifically relates to an airtight detection tool.

Background

The airtightness detection is used as a conventional detection means for equipment parts such as airplanes, automobiles, ships and the like, and is mainly used for detecting whether leakage occurs at the connection part of a workpiece; for a part to be subjected to air tightness detection, a connecting part to be detected is usually accommodated in a certain relatively closed space, air and pressure are supplied to the space, and then whether air leakage exists at the connecting part is checked; in the process, the relatively closed space is obtained to be crucial, and the smoothness and effectiveness of the air tightness detection are directly determined.

SUMMERY OF THE UTILITY MODEL

The air tightness detection jig is reasonable in structure, and aims at overcoming the defects in the prior art, so that a relatively closed space in a workpiece is obtained through deformation of the expansion ring, air tightness detection is performed on the workpiece, and the air tightness detection jig is simple, convenient, reliable and good in practicability.

The utility model discloses the technical scheme who adopts as follows:

an air tightness detection jig comprises a bottom plate, wherein supports are arranged on the bottom plate at intervals, a transfer cylinder is horizontally arranged on the two supports together, and a transfer plate is fixedly arranged at the output end of the transfer cylinder; a sliding rail is arranged on the bottom plate positioned on the bottom surface of the transfer plate, the sliding rail is arranged along the telescopic direction of the transfer cylinder, and the bottom surface of the transfer plate is connected with the sliding rail in a sliding manner; the jig assembly is arranged on the moving support plate, the bracket with an inverted U-shaped structure is arranged across the slide rail, the top surface of the bracket is fixedly provided with the pressing air cylinder, and the output end of the pressing air cylinder faces downwards and faces the top end of the jig assembly;

the structure of the jig component is as follows: the device comprises a base fixedly mounted with a transfer board, wherein a vertical air column is mounted on the base, an expansion ring and a gasket are sequentially sleeved on the air column, an end cap is sleeved at the top end of the air column above the gasket, and a workpiece is sleeved on the air column from top to bottom.

As a further improvement of the above technical solution:

the inner circumferential wall surface of the workpiece and the outer wall surface of the air column are spaced, the pressing air cylinder applies force to the outer top surface of the workpiece from top to bottom, and the workpiece transmits the force to the expansion ring through the end cap and the gasket, so that the expansion ring deforms axially and is attached to the inner wall surface of the workpiece.

The side surface of the base is provided with an air connector in a through locking mode, and an external air source is communicated to the inner bottom surface of the workpiece through the air connector, the base, the air column and the end cap.

And a through hole which is communicated up and down is formed in the gas column along the central axial direction, the bottom end of the gas column is inserted into the base, and a sealing ring is further arranged between the outer wall surface of the gas column and the inner wall surface of the base.

The lower edge of the end cap sleeved on the top end of the air column is provided with openings at intervals along the circumferential direction.

The side surface of the bottom plate is fixedly provided with an end block, the end block faces the output end of the transfer cylinder, and when the transfer cylinder pushes the transfer plate to move to the maximum stroke, the inner side surface of the end block is attached to the transfer plate.

The device also comprises a sensor arranged outside the bottom plate through an installation frame, and when the transfer plate is pushed to the maximum displacement position by the transfer cylinder, the sensing end of the sensor is just opposite to the workpiece on the top of the jig component on the transfer plate.

Still install the tow chain subassembly on the outside bottom plate in slide rail side, tow chain subassembly and slide rail parallel arrangement, arrange in the tow chain subassembly with the trachea of gas connector intercommunication.

The expansion ring is made of silica gel.

The utility model has the advantages as follows:

the utility model has compact and reasonable structure and convenient operation, the downward force applied by the pressing cylinder is transmitted to the expansion ring after sequentially passing through the workpiece, the end cap and the gasket, so that the expansion ring is tightly attached to the inner wall surface of the workpiece after axial deformation and compression, the relative sealing before the air tightness detection in the workpiece is realized, the smooth air tightness detection is effectively assisted, and the device is simple and reliable and has good practicability;

the utility model discloses still include following advantage:

the clamping of work piece is simple and convenient on the tool subassembly, makes expansion ring deformation obtain airtight space relatively through pressing down the cylinder application of force, and the reliability is high, and is efficient, effectual to effective helping hand is in the whole efficiency that promotes airtight detection.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the jig assembly of the present invention.

Fig. 3 is a schematic view of the present invention in an operating state.

Wherein: 1. a base plate; 2. a support; 3. a transferring cylinder; 4. a support; 5. a pressing cylinder; 6. an end-block; 7. a jig component; 8. moving the carrier plate; 9. a slide rail; 10. a mounting frame; 11. a sensor; 12. a tow chain assembly; 13. a workpiece; 71. a base; 72. a gas column; 73. an expansion ring; 74. a gasket; 75. an end cap; 76. an air joint.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1, the air-tightness detection fixture of the present embodiment includes a bottom plate 1, supports 2 are installed on the bottom plate 1 at intervals, a transfer cylinder 3 is installed horizontally on the two supports 2, and a transfer plate 8 is fixedly installed at an output end of the transfer cylinder 3; a sliding rail 9 is arranged on the bottom plate 1 positioned on the bottom surface of the transfer plate 8, the sliding rail 9 is arranged along the extension direction of the transfer cylinder 3, and the bottom surface of the transfer plate 8 is connected with the sliding rail 9 in a sliding manner; a jig component 7 is arranged on the movable support plate 8, a support 4 with an inverted U-shaped structure is arranged across the slide rail 9, a pressing cylinder 5 is fixedly arranged on the top surface of the support 4, and the output end of the pressing cylinder 5 faces downwards and faces the top end of the jig component 7;

as shown in fig. 2, the jig assembly 7 has the following structure: the device comprises a base 71 fixedly mounted with a transfer plate 8, wherein a vertical air column 72 is mounted on the base 71, an expansion ring 73 and a gasket 74 are sequentially sleeved on the air column 72, an end cap 75 is sleeved at the top end of the air column 72 above the gasket 74, and a workpiece 13 is sleeved on the air column 72 from top to bottom.

The downward force applied by the pressing cylinder 5 is transmitted to the expansion ring 73 after sequentially passing through the workpiece 13, the end cap 75 and the gasket 74, so that the expansion ring 73 is axially deformed and compressed and then is tightly attached to the inner wall surface of the workpiece 13, relative sealing before airtight detection in the workpiece 13 is realized, and the smooth proceeding of the airtight detection is effectively assisted.

The inner circumferential wall surface of the workpiece 13 and the outer wall surface of the air column 72 are spaced, the pressing cylinder 5 applies force to the outer top surface of the workpiece 13 from top to bottom, the workpiece 13 transmits the force to the expansion ring 73 through the end cap 75 and the gasket 74, and the expansion ring 73 deforms axially and is attached to the inner wall surface of the workpiece 13.

An air connector 76 is locked on the side surface of the base 71 in a penetrating way, and an external air source is communicated to the inner bottom surface of the workpiece 13 through the air connector 76, the base 71, the air column 72 and the end cap 75.

A through hole which is vertically communicated is formed in the air column 72 along the central axial direction, the bottom end of the air column 72 is inserted into the base 71, and a sealing ring is further installed between the outer wall surface of the air column 72 and the inner wall surface of the base 71.

The lower edge of the end cap 75 fitted over the top end of the air column 72 is opened with openings at intervals along the circumferential direction, so that the end cap 75 moves smoothly up and down relative to the air column 72.

An end block 6 is fixedly arranged on the side surface of the bottom plate 1, the end block 6 faces the output end of the transfer cylinder 3, when the transfer cylinder 3 pushes the transfer plate 8 to move to the maximum stroke, the inner side surface of the end block 6 is attached to the transfer plate 8, and the end block 6 plays a limiting role when the transfer plate 8 moves to the maximum stroke, so that the transfer plate 8 is prevented from sliding out of the slide rail 9.

The device also comprises a sensor 11 arranged outside the bottom plate 1 through an installation frame 10, when the transfer cylinder 3 pushes the transfer plate 8 to the maximum displacement position, the sensing end of the sensor 11 is just opposite to a workpiece 13 on the top of the jig component 7 on the transfer plate 8, and the sensor 11 is used for detecting whether the workpiece 13 on the jig component 7 exists or not.

And a drag chain assembly 12 is further installed on the bottom plate 1 positioned outside the side surface of the sliding rail 9, the drag chain assembly 12 is arranged in parallel with the sliding rail 9, and an air pipe communicated with the air connector 76 is arranged in the drag chain assembly 12.

The expansion ring 73 is made of silica gel; the expansion ring 73 is axially limited on the outer circumferential surface of the air column 72 through a step structure.

In the embodiment, the workpiece 13 is sleeved on the end cap 75 at the top of the air column 72, so that the workpiece 13 is loaded, and the workpiece 13 is simply and conveniently clamped on the jig assembly 7; the expansion ring 73 is deformed to obtain a relatively closed space by applying force through the pressing cylinder 5, so that the reliability is high, the efficiency is high, and the effect is good, so that the overall efficiency of airtight detection is improved by effectively assisting;

in this embodiment, the downward pressing force of the pressing cylinder 5 is converted into a downward force applied to the circumferential direction of the expansion ring 73 through the end cap 75, so that the axial shrinkage deformation of the expansion ring 73 is stable, reliable and consistent; the existence of packing ring 74 between end cap 75 and the expansion ring 73 for end cap 75 exerts to expansion ring 73 with power transmission behind packing ring 74 on, plays the guard action to the expansion ring 73 of silica gel material, also makes expansion ring 73 atress more even, has effectively extended the holistic life of tool, has ensured the reliability that the tool used.

The utility model discloses a theory of operation does:

the shifting cylinder 3 works, the output end of the shifting cylinder drives the shifting plate 8 to move to the maximum stroke, the workpiece 13 to be detected is sleeved on the jig assembly 7 downwards, and the sensor 11 senses the feeding of the workpiece 13;

the transferring cylinder 3 works reversely, and pulls the transferring plate 8 to move to the lower part of the pressing cylinder 5 along the slide rail 9, as shown in fig. 3;

the pressing cylinder 5 works, and the output end of the pressing cylinder extends downwards to be close to and apply force to the workpiece 13; the workpiece 13 is stressed and then transmits the force downwards to the end cap 75, the end cap 75 transmits the force downwards to the expansion ring 73 through the gasket 74, the expansion ring 73 is stressed and axially contracted to deform, and the deformed part of the expansion ring 73 protrudes outwards in the circumferential direction and is tightly attached to the inner wall surface of the workpiece 13, so that a relatively closed space is formed inside the workpiece 13;

an external air source inflates air into the closed space inside the workpiece 13 through the air joint 76, the base 71 and the air column 72 to carry out air tightness detection;

after the detection is finished, the pressing cylinder 5 reversely works and retracts upwards, the deformed expansion ring 73 resets itself, and the gasket 74 and the end cap 75 are pushed upwards to reset; the detected workpiece 13 is moved out from the lower part of the pressing cylinder 5 together with the jig assembly 7 by the transfer cylinder 3, and is discharged.

The utility model is simple in operation, convenient to use is reliable, has realized the airtight of 13 inner spaces of work pieces, and the helping hand goes on smoothly in airtight detection, and the practicality is good.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims

1. The utility model provides an airtight detection tool which characterized in that: the device comprises a bottom plate (1), wherein supports (2) are arranged on the bottom plate (1) at intervals, a transfer cylinder (3) is jointly and horizontally arranged on the two supports (2), and a transfer plate (8) is fixedly arranged at the output end of the transfer cylinder (3); a sliding rail (9) is arranged on the bottom plate (1) positioned on the bottom surface of the transfer plate (8), the sliding rail (9) is arranged along the extension direction of the transfer cylinder (3), and the bottom surface of the transfer plate (8) is in sliding connection with the sliding rail (9); a jig assembly (7) is mounted on the moving support plate (8), a support (4) with an inverted U-shaped structure is mounted across the sliding rail (9), a pressing cylinder (5) is fixedly mounted on the top surface of the support (4), and the output end of the pressing cylinder (5) faces downwards and is opposite to the top end of the jig assembly (7);

the structure of the jig component (7) is as follows: the device comprises a base (71) fixedly mounted with a transfer plate (8), wherein a vertical air column (72) is mounted on the base (71), an expansion ring (73) and a gasket (74) are sequentially sleeved on the air column (72), an end cap (75) is sleeved at the top end of the air column (72) above the gasket (74), and a workpiece (13) is sleeved on the air column (72) from top to bottom.

2. The air-tightness detecting jig of claim 1, wherein: the inner circumferential wall surface of the workpiece (13) and the outer wall surface of the air column (72) are spaced, the pressing air cylinder (5) applies force to the outer top surface of the workpiece (13) from top to bottom, and the workpiece (13) transmits the force to the expansion ring (73) through the end cap (75) and the gasket (74), so that the expansion ring (73) deforms axially and is attached to the inner wall surface of the workpiece (13).

3. The air-tightness detecting jig of claim 1, wherein: an air connector (76) is arranged on the side surface of the base (71) in a penetrating and locking mode, and an external air source is communicated to the inner bottom surface of the workpiece (13) through the air connector (76), the base (71), the air column (72) and the end cap (75).

4. The air-tightness detecting jig according to claim 3, wherein: a through hole which is communicated up and down is formed in the air column (72) along the central axial direction, the bottom end of the air column (72) is inserted into the base (71), and a sealing ring is further installed between the outer wall surface of the air column (72) and the inner wall surface of the base (71).

5. The air-tightness detecting jig of claim 1, wherein: the lower edge of an end cap (75) sleeved at the top end of the air column (72) is provided with openings at intervals along the circumferential direction.

6. The air-tightness detecting jig of claim 1, wherein: an end block (6) is fixedly arranged on the side face of the bottom plate (1), the end block (6) faces the output end of the transfer cylinder (3), and when the transfer cylinder (3) pushes the transfer plate (8) to move to the maximum stroke, the inner side face of the end block (6) is attached to the transfer plate (8).

7. The air-tightness detecting jig of claim 1, wherein: the device is characterized by further comprising a sensor (11) arranged outside the bottom plate (1) through an installation frame (10), and when the transfer cylinder (3) pushes the transfer plate (8) to the maximum displacement, the sensing end of the sensor (11) is rightly opposite to a workpiece (13) on the top of the jig assembly (7) on the transfer plate (8).

8. The air-tightness detecting jig of claim 1, wherein: the bottom plate (1) positioned outside the side face of the sliding rail (9) is further provided with a drag chain assembly (12), the drag chain assembly (12) is arranged in parallel with the sliding rail (9), and an air pipe communicated with the air connector (76) is arranged in the drag chain assembly (12).

9. The air-tightness detecting jig of claim 1, wherein: the expansion ring (73) is made of silica gel.