Air tightness testing device

Abstract

The utility model discloses an air tightness testing device which comprises a rack, and the rack is provided with a first driving mechanism, a second driving mechanism, a jig and a testing mechanism. The first driving mechanism comprises a first driving air cylinder and a check block, and the check block is connected with an output shaft of the first driving air cylinder. The second driving mechanism comprises a second driving cylinder and a transmission mechanism, the transmission mechanism is connected with an output shaft of the second driving cylinder, and the second driving cylinder can drive the transmission mechanism to slide horizontally; the jig is fixed on the rack; the testing mechanism is fixed on the transmission mechanism and can horizontally slide along with the transmission mechanism; the testing mechanism and the stop block are respectively arranged on two sides of the rack and are matched in height; the first driving air cylinder and the second driving air cylinder are arranged on the same side of the rack. According to the air tightness testing device, the clamping cylinders are arranged on the same side, the overall structure is small and compact, the occupied space is small, and the testing device can be conveniently installed in a place with a small space, so that the space utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness testing, in particular to an air tightness testing device. Background Art

[0002] Pressure vessels require air-tightness testing during production. This test uses gas as the pressurized medium to test the tightness of the pressure vessel to prevent leakage. Because currently used air-tightness testing equipment is relatively large, air-tightness testing on a horizontal surface typically requires clamping, fixing, and air-sealing the component under test from both sides of the horizontal surface. The clamping structure and the air-tightness test cylinders are located on either side of the equipment, requiring space for the cylinders to move. This occupies a large area and hinders full utilization of the site. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide an airtightness testing device with a small and compact structure and a small occupied space, so that the testing equipment can be easily installed in a small space and all or some of the above-mentioned defects can be avoided.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is as follows: providing an airtightness testing device, the airtightness testing device comprising a frame on which a first driving mechanism, a second driving mechanism, a jig and a testing mechanism are mounted;

[0005] The first driving mechanism includes a first driving cylinder and a stopper, wherein the stopper is connected to the output shaft of the first driving cylinder;

[0006] The second driving mechanism includes a second driving cylinder and a transmission mechanism, wherein the transmission mechanism is connected to the output shaft of the second driving cylinder, and the second driving cylinder can drive the transmission mechanism to slide horizontally;

[0007] The jig is fixed on the frame;

[0008] The testing mechanism is fixed on the transmission mechanism and can slide horizontally with the transmission mechanism; the testing mechanism and the stopper are respectively arranged on both sides of the frame, and the height of the testing mechanism and the stopper are adapted; the first driving cylinder and the second driving cylinder are arranged on the same side of the frame.

[0009] The frame includes a top plate, a bottom plate and a plurality of columns, two ends of the plurality of columns are respectively vertically connected to the top plate and the bottom plate, and the bottom plate is arranged on a horizontal plane.

[0010] In which, the transmission mechanism includes a linear guide rail, a guide rail slider, a joint and a connecting plate, the linear guide rail is fixed to the lower part of the top plate, and the guide rail slider is slidingly connected to the linear guide rail; the second driving cylinder is installed at one end of the linear guide rail and is adapted to the height of the joint; the joint is fixed to the guide rail slider through the connecting plate and is connected to the output shaft of the second driving cylinder.

[0011] Wherein, a support plate is also fixed on the connecting plate, and the support plate is vertically connected to the connecting plate;

[0012] The support plate is provided with a first through hole and a second through hole which penetrates the support plate in a front-to-back direction, and the testing mechanism is horizontally mounted on the support plate.

[0013] In which, the testing mechanism includes a plugging head and an air inlet pipe, the plugging head is installed in the first through hole, the interior of the plugging head is hollow and provided with a first air duct running through it, one end of the first air duct is used to insert into the test port of the component to be tested; the air inlet pipe is installed in the second through hole, the interior of the air inlet pipe is hollow and provided with a second air duct running through it, one end of the second air duct is used to connect with the gas delivery device.

[0014] Wherein, sealing rings are provided in both the first through hole and the second through hole.

[0015] Wherein, the transmission mechanism further includes a mounting plate, one end of which is fixed to the lower portion of the top plate, and the other end of which extends downward to form an extension portion, and the second driving cylinder is horizontally mounted on the extension portion.

[0016] Wherein, it also includes a mounting frame, which is fixed to the edge of the top plate, and the first driving mechanism is horizontally fixed on the mounting frame.

[0017] In which, the jig is fixed to the upper part of the top plate and is used to clamp the component to be tested; the jig includes at least one group of front jigs, at least one group of middle jigs and a rear boss, the front jig and the testing mechanism are located on the same side, and the front jig is provided with a trapezoidal clamping surface; the middle jig and the second driving cylinder are located on the same side, and the middle jig is provided with an arc-shaped clamping surface; the rear boss is provided on the edge of the top plate on the same side as the second driving cylinder, and the height of the rear boss is equal to the height of the trapezoidal clamping surface.

[0018] There are four columns, and the four columns are symmetrically arranged at the four corners of the frame.

[0019] Compared with the prior art, the air tightness testing device of the present invention achieves the following beneficial effects: the clamping cylinders of the air tightness testing equipment are arranged on the same side, the overall structure is small and compact, and occupies little space, making it easy to install the testing device in a small space to improve space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the air tightness testing device of the utility model;

[0022] Figure 2 This is a front structural diagram of the utility model air tightness testing device;

[0023] Figure 3 This is a schematic diagram of the side structure of the air tightness testing device of the utility model;

[0024] Figure 4 It is a schematic diagram of the top structure of the air tightness testing device of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the embodiment of the present utility model, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative position relationship, movement situation, etc. between each component under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "first", "second" and the like in this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units that are inherent to these processes, methods, products or devices.

[0027] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] See also Figures 1 to 4 , Figure 1 The figure is a schematic diagram of the three-dimensional structure of the airtightness testing device of the present invention. The airtightness testing device includes a frame 1, on which are mounted a first drive mechanism 2, a second drive mechanism 3, a jig 4, and a testing mechanism 5. The first drive mechanism 2 includes a first drive cylinder 21 and a stopper 22. The stopper 22 is connected to the output shaft of the first drive cylinder 21. The first drive cylinder 21 is horizontally arranged, and the output shaft drives the stopper 22 to move horizontally. For ease of understanding, the direction in which the first drive cylinder 21 extends is defined as the horizontal direction, and the direction perpendicular to the direction in which the first drive cylinder 21 extends is defined as the vertical direction. The second drive mechanism 3 includes a second drive cylinder 31 and a transmission mechanism. The transmission mechanism is connected to the output shaft of the second drive cylinder 31. The second drive cylinder 31 is also horizontally arranged and can drive the transmission mechanism to slide horizontally. The jig 4 is fixed to the frame 1 and is used to clamp and secure the component to be tested. The testing mechanism 5 is fixed to the transmission mechanism and can slide horizontally with the transmission mechanism. The test mechanism 5 and the stopper 22 are respectively disposed on either side of the frame 1, and the height of the test mechanism 5 and the stopper 22 are adapted to each other, thereby enabling the test component to be abutted and clamped from both sides of the frame 1. The first drive cylinder 21 and the second drive cylinder 31 are disposed on the same side of the frame 1. These arrangements, with space reserved for the cylinders' telescopic movement on the same side of the frame 1, occupy relatively little space. The overall structure of the airtightness test device is compact and sleek, requiring minimal space, making it easy to install in confined spaces and improving space utilization.

[0029] Please refer to Figure 2 In this application, the rack 1 includes a top plate 11, a bottom plate 12 and multiple columns 13. The two ends of the multiple columns 13 are vertically connected to the top plate 11 and the bottom plate 12 respectively. The bottom plate 12 is set on a horizontal plane. The top plate 11 and the bottom plate 12 are both set horizontally. The columns 13 are set in the vertical direction. The rack 1 is used to carry and install other components.

[0030] The transmission mechanism in the present application includes a linear guide 6, a guide slider 7, a joint 8 and a connecting plate 9. The linear guide 6 is fixed in reverse to the lower part of the top plate 11, and the guide slider 7 is slidably connected to the linear guide 6; the second driving cylinder 31 is installed at one end of the linear guide 6 and is adapted to the height of the joint 8; the joint 8 is fixed to the guide slider 7 through the connecting plate 9 and is connected to the output shaft of the second driving cylinder 31. The testing mechanism 5 is installed on the transmission mechanism, specifically, on the connecting plate 9. Through the above arrangement, the second driving cylinder 31 can push the joint 8, the connecting plate 9 and the guide slider 7 to slide horizontally along the linear guide 6, and at the same time drive the testing mechanism 5 fixed on the connecting plate 9 to slide horizontally, thereby adjusting the distance between the testing mechanism 5 and the stop block 22, so as to facilitate the abutment and clamping of the test components from both sides of the frame 1.

[0031] In the present application, a support plate 10 is also fixed to the connecting plate 9, and the support plate 10 is vertically connected to the connecting plate 9. The support plate 10 is provided with a first through hole 101 and a second through hole 102 that pass through the support plate 10 in the front-to-back direction. The test mechanism 5 is horizontally mounted on the support plate 10, opposite the stopper 22 located on the other side of the frame 1. Specifically, the test mechanism 5 is fixed within the first through hole 101 and the second through hole 102.

[0032] In this application, the testing mechanism 5 includes a plugging head 51 and an air inlet pipe 52. The plugging head 51 is installed in the first through hole 101. The internal hollow space of the plugging head 51 is provided with a first air channel running through it. One end of the first air channel is used to be inserted into the test port of the component to be tested, and is used to seal the component to be tested. The air inlet pipe 52 is installed in the second through hole 102. The internal hollow space of the air inlet pipe 52 is provided with a second air channel running through it. One end of the second air channel is used to connect to an external air supply device to inflate the component to be tested. After inflation, the test port of the component to be tested is fitted to the plugging head 51.

[0033] In this application, sealing rings are provided in the first through hole 101 and the second through hole 102. The sealing rings are arranged between the first through hole 101 and the second through hole 102 and the sealing head 51 and the air intake pipe 52 respectively installed in the first through hole 101 and the second through hole 102, and are used to ensure that the sealing head 51 and the air intake pipe 52 are firmly installed in the first through hole 101 and the second through hole 102 to avoid shaking and displacement during use, thereby causing loose sealing and air leakage, which has an adverse effect on the results of the air tightness test.

[0034] The transmission mechanism in this application also includes a mounting plate 14. One end of the mounting plate 14 is fixed to the lower portion of the top plate 11, and the other end extends downward to form an extension. The second drive cylinder 31 is horizontally mounted on the extension. One end of the mounting plate 14 is horizontally positioned to facilitate fixation to the lower portion of the top plate 11. The other end is bent 90 degrees to form an extension. The extension has a through hole extending horizontally through the extension. The second drive cylinder 31 is fixed to the extension through the through hole. After installation, the second drive cylinder 31 is in a horizontal position.

[0035] The airtightness testing device in the present application further includes a mounting frame 15, which is fixed to the edge of the top plate 11 of the frame 1, and the first driving mechanism 2 is horizontally fixed to the mounting frame 15. In one embodiment, the mounting frame 15 has a horizontally arranged first portion and a second portion vertically connected to the first portion, the second portion is fixed to the side of the top plate 11 of the frame 1, the first portion extends outward from the side of the frame 1, the first driving mechanism 2 is mounted on the first portion, the first driving cylinder 21 is located on the end of the first portion away from the frame 1, and the stopper 22 is located on the end of the first portion close to the frame 1 to facilitate the lateral movement of the stopper 22. The stopper 22 and the testing mechanism 5 located on the other side of the frame 1 jointly clamp the component to be tested.

[0036] See also Figure 4 In the present application, the jig 4 is fixed to the upper part of the top plate 11 and is used to clamp the component to be tested. Specifically, the jig 4 includes at least one group of front jigs 41, at least one group of middle jigs 42 and a rear boss 43. The front jig 41 and the testing mechanism 5 are located on the same side, and the front jig 41 is provided with a trapezoidal clamping surface. The middle jig 42 and the second driving cylinder 31 are located on the same side, and the middle jig 42 is provided with an arc-shaped clamping surface. The rear boss 43 is provided on the edge of the top plate 11 on the same side as the second driving cylinder 31, and the height of the rear boss 43 is equal to the height of the trapezoidal clamping surface. The component to be tested is placed on the jig 4 before the test and is in a horizontal state on the jig 4 to facilitate subsequent airtightness testing.

[0037] In this application, there are four columns 13, which are symmetrically arranged at the four corners of the rack 1 to form a stable structure of the rack 1. Of course, the number of columns 13 can also be more or less, as long as the structure is stable and does not shake during use and affect the airtightness test.

[0038] When using the air tightness test device of the utility model, the clamping cylinders of the air tightness test equipment are arranged on the same side. The overall structure is small and compact, and occupies little space, which makes it easy to install the test device in a small space to improve space utilization.

[0039] The above is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An airtightness testing device, characterized in that: The airtightness testing device comprises a frame on which a first driving mechanism, a second driving mechanism, a jig and a testing mechanism are mounted; The first driving mechanism includes a first driving cylinder and a stopper, wherein the stopper is connected to the output shaft of the first driving cylinder; The second driving mechanism includes a second driving cylinder and a transmission mechanism, wherein the transmission mechanism is connected to the output shaft of the second driving cylinder, and the second driving cylinder can drive the transmission mechanism to slide horizontally; The jig is fixed on the frame; The testing mechanism is fixed on the transmission mechanism and can slide horizontally with the transmission mechanism; the testing mechanism and the stopper are respectively arranged on both sides of the frame, and the height of the testing mechanism and the stopper are adapted; the first driving cylinder and the second driving cylinder are arranged on the same side of the frame.

2. The airtightness testing device according to claim 1, characterized in that: The frame includes a top plate, a bottom plate and a plurality of columns, two ends of the plurality of columns are respectively vertically connected to the top plate and the bottom plate, and the bottom plate is arranged on a horizontal plane.

3. The airtightness testing device according to claim 2, characterized in that: The transmission mechanism includes a linear guide rail, a guide rail slider, a joint and a connecting plate. The linear guide rail is fixed to the lower part of the top plate, and the guide rail slider is slidably connected to the linear guide rail; the second driving cylinder is installed at one end of the linear guide rail and is adapted to the height of the joint; the joint is fixed to the guide rail slider through the connecting plate and is connected to the output shaft of the second driving cylinder.

4. The airtightness testing device according to claim 3, characterized in that: A support plate is also fixed to the connecting plate, and the support plate is vertically connected to the connecting plate; The testing mechanism is horizontally mounted on the supporting plate.

5. The airtightness testing device according to claim 4, characterized in that: The support plate is provided with a first through hole and a second through hole which penetrates the support plate in the front-to-back direction. The testing mechanism includes a plugging head and an air inlet pipe. The plugging head is installed in the first through hole. The interior of the plugging head is hollow and provided with a first air duct which penetrates therethrough. One end of the first air duct is used to insert into the test port of the component to be tested; the air inlet pipe is installed in the second through hole. The interior of the air inlet pipe is hollow and provided with a second air duct which penetrates therethrough. One end of the second air duct is used to connect with the gas delivery device.

6. The airtightness testing device according to claim 5, characterized in that: Sealing rings are provided in both the first through hole and the second through hole.

7. The airtightness testing device according to claim 3, characterized in that: The transmission mechanism further includes a mounting plate, one end of which is fixed to the lower portion of the top plate, and the other end of which extends downward to form an extension portion, and the second driving cylinder is horizontally mounted on the extension portion.

8. The airtightness testing device according to claim 2, characterized in that: It also includes a mounting frame, which is fixed to the edge of the top plate, and the first driving mechanism is horizontally fixed on the mounting frame.

9. The airtightness testing device according to claim 2, characterized in that: The jig is fixed to the upper part of the top plate and is used to clamp the component to be tested; the jig includes at least one group of front jigs, at least one group of middle jigs and a rear boss, the front jig is located on the same side as the testing mechanism, and the front jig is provided with a trapezoidal clamping surface; the middle jig is located on the same side as the second driving cylinder, and the middle jig is provided with an arc-shaped clamping surface; the rear boss is provided on the edge of the top plate on the same side as the second driving cylinder, and the height of the rear boss is equal to the height of the trapezoidal clamping surface.

10. The airtightness testing device according to claim 2, characterized in that: The number of the columns is four, and the four columns are symmetrically arranged at the four corners of the frame.

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