CN216594026U

CN216594026U - Leak hunting device

Info

Publication number: CN216594026U
Application number: CN202122828847.7U
Authority: CN
Inventors: 李港恩
Original assignee: Dongguan Hantao Metal Manufacturing Co ltd
Current assignee: Dongguan Hantao Metal Manufacturing Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-05-24
Anticipated expiration: 2031-11-17

Abstract

The utility model relates to the technical field of workpiece monitoring, in particular to a leakage detection device which comprises a machine body, a pressing mechanism and a plurality of plugging mechanisms, wherein the machine body is provided with a base for supporting a workpiece to be detected, the pressing mechanism is used for positioning the workpiece to be detected to the base, the base is provided with an air delivery hole, and the air delivery hole is used for being externally connected with an air source and delivering air input by the air source into the workpiece to be detected; the plugging mechanisms are located on the periphery of the base and used for plugging holes in the side wall of the piece to be tested, and the base is provided with a monitor used for monitoring the change of air pressure in the piece to be tested. The utility model compresses the piece to be detected to the base through the pressing and holding mechanism, then realizes the respective plugging of a plurality of holes of the piece to be detected by adopting the matching of all plugging mechanisms, then carries out gas transmission into the piece to be detected through the gas transmission holes, and monitors the change of the internal gas pressure of the piece to be detected in real time through the monitor, thereby achieving the effect of the leakage detection device for the piece to be detected.

Description

Leak hunting device

Technical Field

The utility model relates to the technical field of workpiece monitoring, in particular to a leakage detection device.

Background

The workpiece to be tested shown in the figure is a workpiece used in the interior of an automobile. Which has a plurality of holes for allowing gas to flow through. For the workpiece to be tested, after the manufacture, a leakage detection device is needed to monitor whether the workpiece has enough air tightness in a sealed state. However, in the prior art, no device for detecting leakage is specially used.

Disclosure of Invention

The utility model provides a leakage detection device aiming at the problems in the prior art, which can reliably realize the leakage detection function of the monitoring piece.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a leakage detection device which comprises a machine body, a pressing mechanism and a plurality of plugging mechanisms, wherein the machine body is provided with a base for supporting a piece to be detected, the pressing mechanism is used for positioning the piece to be detected to the base, the base is provided with a gas transmission hole, and the gas transmission hole is used for being externally connected with a gas source and transmitting gas input by the gas source into the piece to be detected; the plurality of plugging mechanisms are located on the periphery of the base and used for plugging holes in the side wall of the piece to be tested, and the base is provided with a monitor used for monitoring the change of air pressure in the piece to be tested.

Further, the pressing and holding mechanism comprises a pressing cylinder, a pressing and holding piece and a guide structure, the machine body is provided with a portal frame, the pressing cylinder is installed on the portal frame, the pressing and holding piece is installed on a piston rod of the pressing cylinder, and the guide structure is used for guiding the pressing and holding piece to lift along the vertical direction.

Furthermore, the bottom of the pressing and holding piece is provided with a plurality of abutting pieces, and the abutting pieces are used for abutting against the piece to be tested.

Further, shutoff mechanism includes shutoff cylinder, shutoff base plate, shutoff board and sealing member, and the shutoff cylinder is used for driving the shutoff base plate and is close to or keeps away from piece to be measured on the base, shutoff board and sealing member all set up in the one side that the shutoff base plate is close to the piece to be measured, and the shutoff board is located the sealing member, and the shutoff board is used for hiding the hole of the piece to be measured, and the sealing member is used for sealed the department of touching of the piece to be measured and shutoff board.

Furthermore, the machine body is provided with a plurality of plugging frames, and the plugging cylinders are correspondingly installed with the plugging frames one to one.

Preferably, the plugging mechanism further comprises a plurality of guide columns, the plugging frame is provided with a plurality of guide sleeves, the guide columns and the guide sleeves are arranged in a one-to-one corresponding sliding mode, and the guide columns are connected to the plugging base plate.

Further, the base is provided with a sealing structure, and the sealing structure is used for sealing the position where the piece to be detected is abutted to the base.

Further, the machine body is provided with a mounting hole, the mounting hole is communicated with the gas transmission hole, and the mounting hole is used for being communicated and fixed with an external gas source.

The utility model has the beneficial effects that: the utility model compresses the piece to be detected to the base through the pressing and holding mechanism, then realizes the respective plugging of a plurality of holes of the piece to be detected by adopting the matching of all plugging mechanisms, then carries out gas transmission into the piece to be detected through the gas transmission holes, and monitors the change of the internal gas pressure of the piece to be detected in real time through the monitor, thereby achieving the effect of the leakage detection device for the piece to be detected.

Drawings

Fig. 1 is a schematic view of the present invention in use.

FIG. 2 is a schematic diagram of the present invention.

Fig. 3 is another schematic view of the present invention.

FIG. 4 is a schematic view of a device under test being monitored according to the present invention.

Reference numerals: 1-machine body, 2-pressing and holding mechanism, 3-blocking mechanism, 4-base, 5-piece to be detected, 11-portal frame, 12-blocking frame, 13-guide sleeve, 14-mounting hole, 21-pressing cylinder, 22-pressing and holding piece, 23-guide structure, 24-interference piece, 31-blocking cylinder, 32-blocking base plate, 33-blocking plate, 34-sealing piece, 35-guide column, 41-air conveying hole, 42-sealing structure and 51-hole.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.

As shown in fig. 1 to 4, the plugging device provided by the present invention comprises a machine body 1, a pressing mechanism 2 and a plurality of plugging mechanisms 3, wherein the machine body 1 is provided with a base 4 for supporting a to-be-tested member 5, the pressing mechanism 2 is used for positioning the to-be-tested member 5 to the base 4, the base 4 is provided with a gas transmission hole 41, and the gas transmission hole 41 is used for externally connecting a gas source and transmitting gas input by the gas source into the to-be-tested member 5; the plurality of plugging mechanisms 3 are all located on the periphery of the base 4, the plugging mechanisms 3 are used for plugging holes 51 in the side wall of the piece to be tested 5, and the base 4 is provided with a monitor (not shown in the figure) for monitoring the change of air pressure in the piece to be tested 5.

In practical use, the monitor is an air pressure sensor or other monitors, that is, the piece to be measured 5 is placed on the base 4, the piece to be measured 5 is pressed down by the pressing mechanism 2 so that the piece to be measured 5 is tightly abutted against the base 4, and each hole 51 on the side of the piece to be measured 5 is respectively blocked by a plurality of blocking mechanisms 3 (for example, four sides of the piece to be measured 5 in the embodiment have the holes 51, so the number of the blocking mechanisms 3 is four), and then the air transmission hole 41 transmits air by an external air transmission device until the air pressure reaches a certain set value, and stops transmitting air; and then keeping the state for a certain time, and monitoring the air pressure change in the piece to be detected 5 through a monitor, thereby judging whether the piece to be detected 5 leaks air or not according to a monitoring result.

In this embodiment, the pressing mechanism 2 includes a pressing cylinder 21, a pressing member 22, and a guiding structure 23, the machine body 1 is provided with a gantry 11, the pressing cylinder 21 is mounted on the gantry 11, the pressing member 22 is mounted on a piston rod of the pressing cylinder 21, and the guiding structure 23 is used for guiding the pressing member 22 to move up and down along a vertical direction. After the piece 5 to be tested is put, the pressing and holding piece 22 is driven by the pressing cylinder 21 to descend along the guide structure 23 until the pressing and holding piece 22 contacts the piece 5 to be tested, at the moment, the pressing cylinder 21 continuously applies a pressure to the pressing and holding piece 22 so as to ensure that the pressing and holding piece 22 is tightly abutted against the base 4, and air leakage between the hole 51 at the bottom of the pressing and holding piece 22 and the base 4 is avoided.

Specifically, the bottom of the pressing member 22 is provided with a plurality of contact members 24, and the contact members 24 are used for contacting with the top side of the to-be-tested member 5. The plurality of contact pieces 24 are matched to realize the positioning effect on the piece to be detected 5, namely, the piece to be detected 5 is ensured not to deviate due to the change of air pressure in the inflation process, so that the monitoring reliability is ensured.

In this embodiment, the blocking mechanism 3 includes a blocking cylinder 31, a blocking substrate 32, a blocking plate 33 and a sealing member 34, the blocking cylinder 31 is used to drive the blocking substrate 32 to approach or keep away from the to-be-detected piece 5 on the base 4, the blocking plate 33 and the sealing member 34 are both disposed on one side of the blocking substrate 32 close to the to-be-detected piece 5, the sealing member 34 is preferably of a frame-shaped structure, the blocking plate 33 is located in the sealing member 34, the blocking plate 33 is used to cover the hole 51 of the to-be-detected piece 5, and the sealing member 34 is used to seal the contact position of the to-be-detected piece 5 and the blocking plate 33. The plugging cylinder 31 controls the plugging substrate 32 to move back and forth, so that the plugging substrate 32 is close to or far away from the piece 5 to be tested, after the plugging substrate 32 is close to the piece 5 to be tested, the plugging plate 33 just can cover the hole 51 of the side edge of the piece 5 to be tested, and the sealing element 34 seals a gap between the plugging plate 33 and the hole 51, so that air leakage is avoided, and the reliability of a monitoring result is ensured.

Specifically, the machine body 1 is provided with a plurality of plugging frames 12, and the plugging cylinders 31 are installed in one-to-one correspondence with the plugging frames 12, so that the plugging cylinders 31 are in a suspended state to reliably drive the plugging substrate 32.

Preferably, the plugging mechanism 3 further comprises a plurality of guide posts 35, the plugging frame 12 is provided with a plurality of guide sleeves 13, the guide posts 35 and the guide sleeves 13 are arranged in a one-to-one sliding manner, and the guide posts 35 are connected to the plugging substrate 32. This guide post 35 and uide bushing 13 cooperation guarantee that shutoff base plate 32 is close to or keeps away from the piece 5 that awaits measuring along the horizontal direction to guaranteed that shutoff board 33 can accurately cover the hole 51 position of the piece 5 that awaits measuring.

In the present embodiment, the base 4 is provided with a sealing structure 42, and the sealing structure 42 is used for sealing the abutting position of the piece to be tested 5 and the base 4. The sealing structure 42 is used to further ensure that the gap between the base 4 and the member to be tested 5 is not air-leaked after the base covers the hole 51 at the bottom of the member to be tested 5.

In this embodiment, the machine body 1 is provided with a mounting hole 14, the mounting hole 14 is communicated with the gas transmission hole 41, and the mounting hole 14 is used for communicating and fixing with an external gas source, so that the stability of gas transmission is ensured.

Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A leak hunting device, characterized in that: the device comprises a machine body, a pressing mechanism and a plurality of plugging mechanisms, wherein the machine body is provided with a base for supporting a piece to be tested, the pressing mechanism is used for positioning the piece to be tested to the base, the base is provided with a gas transmission hole, and the gas transmission hole is used for being externally connected with a gas source and transmitting gas input by the gas source into the piece to be tested; the plurality of plugging mechanisms are located on the periphery of the base and used for plugging holes in the side wall of the piece to be tested, and the base is provided with a monitor used for monitoring the change of air pressure in the piece to be tested.

2. The leak detection device according to claim 1, wherein: the pressing and holding mechanism comprises a pressing cylinder, a pressing and holding piece and a guide structure, the machine body is provided with a portal frame, the pressing cylinder is installed on the portal frame, the pressing and holding piece is installed on a piston rod of the pressing cylinder, and the guide structure is used for guiding the pressing and holding piece to lift along the vertical direction.

3. The leak detection device according to claim 2, wherein: the bottom of the pressing piece is provided with a plurality of abutting pieces, and the abutting pieces are used for abutting against the piece to be tested.

4. The leak detection device according to claim 1, wherein: the plugging mechanism comprises a plugging cylinder, a plugging base plate, a plugging plate and a sealing element, the plugging cylinder is used for driving the plugging base plate to be close to or far away from a piece to be tested on the base, the plugging plate and the sealing element are both arranged on one side, close to the piece to be tested, of the plugging base plate, the plugging plate is located in the sealing element and used for covering a hole of the piece to be tested, and the sealing element is used for sealing a contact part of the piece to be tested and the plugging plate.

5. The leak detection device according to claim 4, wherein: the machine body is provided with a plurality of plugging frames, and the plugging air cylinders are installed in one-to-one correspondence with the plugging frames.

6. The leak detection device according to claim 5, wherein: the plugging mechanism further comprises a plurality of guide columns, the plugging frame is provided with a plurality of guide sleeves, the guide columns and the guide sleeves are arranged in a one-to-one corresponding sliding mode, and the guide columns are connected to the plugging base plate.

7. The leak detection device according to claim 1, wherein: the base is provided with seal structure, seal structure be used for sealed await measuring with the conflict department of base.

8. The leak detection device according to claim 1, wherein: the machine body is provided with a mounting hole, the mounting hole is communicated with the gas transmission hole, and the mounting hole is used for being communicated and fixed with an external gas source.