Air tightness testing equipment for automobile parts

Abstract

The present invention relates to the field of automobile parts testing equipment, specifically an automobile parts air tightness testing equipment, comprising an arc-surface support mounting cover, a plurality of columnar support feet are arranged at equal angles on the outer side of the arc-surface support mounting cover, the outer ends of the columnar support feet are all arranged with support gaskets, a support mounting plate is arranged at the opening of the arc-surface support mounting cover, and a conical material retaining ring is arranged at the edge of the support mounting plate. The present invention also includes: an electrically driven material guiding gate is rotatably arranged at the bottom of the arc-surface support mounting cover; a support mounting column is vertically arranged at the center position of the support mounting plate, which can stably realize the air tightness testing operation of automobile parts and can adapt to air tightness testing of different intensities; it can realize two-stage amplification of air pressure, improve the sensitivity of air tightness testing, and improve the testing accuracy of automobile parts, and at the same time, without using a direct rejection mechanism, the testing time is greatly shortened, which significantly improves the testing quality and efficiency of the automobile parts air tightness testing equipment, and is suitable for large-scale use.

Description

Technical Field

[0001] The invention relates to the field of automobile parts testing equipment, in particular to automobile parts air tightness testing equipment. Background Art

[0002] The quality requirements of automobile manufacturing have been improved. With the rapid development of the automobile industry, the performance, safety and reliability of automobiles have received more and more attention. The quality of automobile parts directly affects the overall performance of the car, so the testing requirements for automobile parts are becoming more and more stringent. As one of the important links in the quality inspection of automobile parts, airtightness testing is crucial to ensure the safety and reliability of automobiles.

[0003] Traditional air tightness testing equipment for automotive parts still relies on manual cooperation for testing, mainly relying on manual operation, and judging the air tightness of accessories by observing bubbles, applying soapy water, etc. This method is not only inefficient, but also easily affected by human factors, resulting in inaccurate test results; because manual testing methods cannot accurately control the test pressure and test time, it is easy to miss or misdetect. Manual testing methods are difficult to detect some tiny leaks, resulting in the inability to discover quality risks of automotive parts in a timely manner.

[0004] Although the current air tightness testing equipment for automotive parts has greatly liberated manpower, the degree of manpower participation is still high. Therefore, the stability of repeated testing is poor, and multi-level amplification testing is not possible. In addition, the current air tightness testing equipment for automotive parts cannot adjust the intensity of stable testing, resulting in excessive pressure required for air tightness testing, which is easy to directly damage automotive parts and performs poorly in terms of testing accuracy and efficiency.

[0005] The present invention aims to solve the technical problems existing in the prior art, and for this purpose, proposes an automobile parts air tightness detection device. Summary of the invention

[0006] The purpose of the present invention is to provide an automobile parts air tightness detection device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An automobile parts air tightness detection device comprises an arc surface support and mounting cover, a plurality of columnar support feet are arranged at equal angles on the outer side of the arc surface support and mounting cover, the outer ends of the columnar support feet are arranged with support gaskets, a support and mounting plate is arranged at the opening of the arc surface support and mounting cover, and a conical material stopper ring is arranged at the edge of the support and mounting plate, and also comprises: an electrically driven material guide gate is rotatably arranged at the bottom of the arc surface support and mounting cover; a support and mounting column is vertically arranged at the center position of the support and mounting plate, a lifting and mounting plate is arranged directly above the support and mounting column, a driving lifting column is arranged at the center position of the upper end of the support and mounting column, the outer end of the driving lifting column is fixedly connected to the center position of one end of the lifting and mounting plate, and a plurality of directional telescopic rods are arranged at equal angles on the upper end of the support and mounting column to cooperate with the driving lifting column, and the outer ends of the directional telescopic rods are connected to one end of the lifting and mounting plate; transmission inner rings are symmetrically rotatably arranged at both ends of the lifting and mounting plate, and the outer part of the transmission inner ring is concentrically arranged The transmission outer ring, the transmission inner ring and the transmission outer ring are connected by transmission mounting rods set at equal angles; a limited rotation ring is set on the side of the transmission inner ring facing the lifting mounting plate, and limited rotation grooves are set at both ends of the lifting mounting plate to cooperate with the limited rotation ring; an airtight detection mechanism, the airtight detection mechanism includes three groups of periodic airtight detection modules and periodic cam modules set on the outer side of the lifting mounting plate, and the three groups of periodic airtight detection modules are set at equal angles on the two transmission outer rings; a rotating loading mechanism, the rotating loading mechanism includes a loading rotating ring set on the outer side of the supporting mounting column, an annular loading sleeve is provided to cooperate with the loading rotating ring rotating sleeve, and several groups of loading mounting columns are set at equal angles on the outside of the annular loading sleeve, an annular power supply rail is set on the inner wall of the annular loading sleeve, and an annular power supply groove is set on the loading rotating ring to cooperate with the annular power supply rail, and independent loading modules are set at the outer ends of the loading mounting columns, and the number of independent loading modules is an integer multiple of the number of periodic airtight detection modules.

[0009] As a further solution of the present invention: a plurality of driving parts are embedded in the other end of the lifting installation plate, one end of the driving parts is provided with a driving gear through a rotating shaft, and a driving gear ring is provided on the inner wall of the transmission inner ring on the same side as the driving gear, and the driving gear and the transmission gear ring are meshed and matched.

[0010] As a further solution of the present invention: the periodic cam module includes three groups of distal rest convex portions arranged at equal intervals on the outside of the lifting mounting plate, proximal rest concave portions are arranged between adjacent distal rest convex portions, and a smooth transition is provided between adjacent distal rest convex portions and proximal rest concave portions.

[0011] As a further solution of the present invention: the periodic airtight detection module includes a horizontally arranged mounting cylinder, one end of the mounting cylinder is connected to a fixed mounting frame in cooperation with two transmission outer rings, a reset mounting tube is arranged at the middle position of the end of the mounting cylinder on one side of the fixed mounting frame, a transmission guide column is arranged through the reset mounting tube, one end of the transmission guide column extends into the mounting cylinder and is cooperated with the mounting cylinder to be provided with a transmission piston, a reset spring is arranged inside the reset mounting tube, one end of the reset spring is connected to the inner wall of the reset mounting tube, and the other end of the reset spring is connected to the transmission piston; the other end of the transmission guide column extends out of the reset mounting tube and is rotatably provided with a deflection driving member, a deflection wheel frame is connected to the deflection driving member, and the end of the deflection wheel frame is rotatably provided with a rotating guide wheel in cooperation with the far rest convex portion and the near rest concave portion.

[0012] As a further solution of the present invention: a connecting mounting cylinder is provided at the other end of the mounting cylinder, a changing connecting cylinder is vertically arranged downward on the wall of the connecting mounting cylinder, a top sealing mounting cylinder is arranged at the end of the changing connecting cylinder, and an annular sealing extrusion groove is arranged on the bottom wall of the top sealing mounting cylinder.

[0013] As a further solution of the present invention: the independent loading module includes a bottom sealing mounting cylinder, an L-shaped mounting frame is arranged on the outer side of the bottom sealing mounting cylinder, a reinforcement ring is arranged at the bottom of the bottom sealing mounting cylinder to cooperate with the L-shaped mounting frame to connect, a damping drive column is arranged on the L-shaped mounting frame, a support connecting frame is arranged for the rotation of the damping drive column, and the support connecting frame is connected to the outer end of the loading mounting column.

[0014] As a further solution of the present invention: an extrusion sealing ring is arranged on the top cylinder wall of the bottom sealing mounting cylinder in cooperation with the annular sealing extrusion groove, a limiting mounting ring is arranged on the inner wall of the bottom sealing mounting cylinder, a plurality of positioning mounting holes are arranged on the limiting mounting ring, a limiting annular loading cylinder is arranged inside the bottom sealing mounting cylinder in cooperation with the limiting mounting ring, a hanging ring is symmetrically arranged on the top of the limiting annular loading cylinder, and a plurality of positioning mounting columns are arranged on the bottom of the limiting annular loading cylinder in cooperation with the positioning mounting holes.

[0015] As a further solution of the present invention: a microporous guide tube is arranged at the bottom of the bottom sealing mounting tube, one end of the microporous guide tube is connected with the bottom sealing mounting tube, a spherical mounting cover is arranged at the other end of the microporous guide tube, an air bag is arranged inside the spherical mounting cover at the connection between the spherical mounting cover and the microporous guide tube, an air pressure sensor is arranged on the inner wall of the spherical mounting cover, and the air pressure sensor is wirelessly connected with the damping drive column.

[0016] As a further solution of the present invention: a plurality of protective ducts are connected and arranged on the wall of the microporous guide tube, an overflow valve is arranged in the protective duct, the triggering air pressure of the overflow valve is greater than the maximum detection air pressure of the air pressure sensor, and a spherical mesh cover is arranged on the inner wall of the bottom sealing installation tube in conjunction with the microporous guide tube cover.

[0017] As a further solution of the present invention: three groups of waste collecting holes are arranged at equal angles on the support mounting plate, and a discharge port is arranged on the support mounting plate between the waste collecting holes. The discharge port extends out of the arc support mounting cover, and an inclined guide plate is arranged in conjunction with the discharge port. The waste collecting holes correspond to the far rest convex portion, and the discharge port corresponds to the near rest concave portion.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] It can stably realize the airtightness detection operation of automobile parts and can adapt to airtightness detection of different intensities; it can realize two-stage amplification of air pressure, improve the sensitivity of airtightness detection, and improve the detection accuracy of automobile parts. At the same time, it does not use a direct rejection mechanism, which greatly shortens the detection time, significantly improves the detection quality and efficiency of automobile parts airtightness detection equipment, and is suitable for large-scale use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a side top view of an automobile parts air tightness testing device.

[0021] Figure 2 It is a stereoscopic schematic diagram of an automobile parts air tightness testing device viewed from the side and upward.

[0022] Figure 3 The present invention is a partial cross-sectional schematic diagram of a periodic cam module in an automobile parts air tightness testing device.

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of point a in the middle.

[0024] Figure 5 It is a three-dimensional schematic diagram of a periodic air tightness detection module in an automobile parts air tightness detection device.

[0025] Figure 6 The present invention is a partial cross-sectional schematic diagram of a periodic air tightness detection module in an automobile parts air tightness detection device.

[0026] Figure 7 The present invention is a partial cross-sectional schematic diagram of a rotary loading mechanism in an automobile parts air tightness testing device.

[0027] Figure 8 It is a side top perspective schematic diagram of an independent loading module in an automobile parts air tightness testing device.

[0028] Fig. 9 It is a side and upward stereoscopic schematic diagram of an independent loading module in an automobile parts air tightness testing device.

[0029] Fig.10The present invention is a partial cross-sectional schematic diagram of an independent loading module in an automobile parts air tightness testing device.

[0030] Fig.11 for Fig.10 Enlarged schematic diagram of point b in the middle.

[0031] Fig.12 It is a three-dimensional schematic diagram of a limiting annular loading cylinder in an automobile parts air tightness testing device.

[0032] 1-arc support mounting cover, 2-support mounting plate, 3-electrically driven material guide gate, 4-columnar support foot, 5-waste collection hole, 6-inclined material guide plate, 7-discharge port, 8-conical material stop ring, 9-bottom sealing mounting cylinder, 10-top sealing mounting cylinder, 11-direction changing connecting cylinder, 12-connecting mounting cylinder, 13-mounting cylinder, 14-fixed mounting frame, 15-transmission outer ring, 16-transmission mounting rod, 17-transmission inner ring, 18-driving gear, 19-driving part, 20-lifting mounting plate, 21-near rest concave portion, 22-periodic cam module, 23-far rest convex portion, 24-driving lifting column, 25-directional telescopic rod, 26-annular loading sleeve, 27-reset mounting cylinder, 28-support mounting column, 29-L-type mounting frame, 30-transmission Gear ring, 31-annular power supply groove, 32-loading rotating ring, 33-annular power supply rail, 34-loading mounting column, 35-support connecting frame, 36-damping drive column, 37-limit rotating ring, 38-limit rotating groove, 39-extrusion sealing ring, 40-microporous guide tube, 41-reinforcement ring, 42-support gasket, 43-limit mounting ring, 44-positioning mounting hole, 45-spherical mesh cover, 46-protective conduit, 47-overflow valve, 48-spherical mounting cover, 49-airbag, 50-air pressure sensor, 51-limiting annular loading tube, 52-positioning mounting column, 53-hanging ring, 54-annular sealing extrusion groove, 55-transmission piston, 56-reset spring, 57-deflection drive member, 58-deflection wheel frame, 59-rotating guide wheel, 60-transmission guide column. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0035] For example, see Figure 1 to Figure 4In an embodiment of the present invention, an automobile parts air tightness detection device includes a curved support and installation cover 1, a plurality of columnar support feet 4 are arranged at equal angles on the outer side of the curved support and installation cover 1, and the outer ends of the columnar support feet 4 are all provided with support gaskets 42, a support and installation plate 2 is arranged at the opening of the curved support and installation cover 1, and a conical surface retaining ring 8 is arranged on the edge of the support and installation plate 2, and further includes: a support and installation column 28 is vertically arranged at the center position of the support and installation plate 2, a lifting installation plate 20 is arranged directly above the support and installation column 28, a driving lifting column 24 is arranged at the center position of the upper end of the support and installation column 28, and the outer end of the driving lifting column 24 is connected to the lifting and installation plate 20. One end of the mounting plate 20 is fixedly connected at the center position, and the upper end of the support mounting column 28 is matched with the driving lifting column 24 to be provided with a plurality of directional telescopic rods 25 at equal angles, and the outer ends of the directional telescopic rods 25 are connected to one end of the lifting mounting plate 20; the bottom of the arc surface support mounting cover 1 is rotatably provided with an electrically driven material guide gate 3; the two ends of the lifting mounting plate 20 are symmetrically rotatably provided with a transmission inner ring 17, and the outside of the transmission inner ring 17 is concentrically provided with a transmission outer ring 15, and the transmission inner ring 17 and the transmission outer ring 15 are connected by a transmission mounting rod 16 arranged at equal angles; a limited position rotating ring 37 is provided on the side of the transmission inner ring 17 facing the lifting mounting plate 20, and the lifting mounting The two ends of the disk 20 are equipped with limited rotation grooves 38 in cooperation with the limited rotation ring 37; the other end of the lifting installation disk 20 is embedded with a plurality of driving members 19, one end of the driving member 19 is provided with a driving gear 18 through a rotating shaft, and the inner wall of the transmission inner ring 17 on the same side as the driving gear 18 is provided with a transmission gear ring 30, and the driving gear 18 and the transmission gear ring 30 are meshed and matched; an airtight detection mechanism, the airtight detection mechanism includes three groups of periodic airtight detection modules and a periodic cam module 22 arranged on the outer side of the lifting installation disk 20, and the three groups of periodic airtight detection modules are arranged at equal angles on the two transmission outer rings 15; a rotating loading mechanism, the rotating loading mechanism includes a support A loading rotating ring 32 is arranged outside the mounting column 28, and an annular loading sleeve 26 is arranged to cooperate with the loading rotating ring 32 rotating sleeve. Several groups of loading mounting columns 34 are arranged at equal angles on the outside of the annular loading sleeve 26. An annular power supply rail 33 is arranged on the inner wall of the annular loading sleeve 26. The loading rotating ring 32 is arranged to cooperate with the annular power supply rail 33 to provide an annular power supply groove 31. The annular power supply rail 33 and the annular power supply groove 31 realize rotation coupling power supply with the rotation of the loading rotating ring 32 and the annular loading sleeve 26, and power supply for independent loading modules. Independent loading modules are arranged at the outer ends of the loading mounting columns 34, and the number of independent loading modules is an integer multiple of the number of periodic airtight detection modules.

[0036] Three groups of waste collecting holes 5 are arranged at equal angles on the support mounting plate 2, and a discharge port 7 is arranged on the support mounting plate 2 between the waste collecting holes 5. The discharge port 7 extends out of the arc support mounting cover 1, and an inclined guide plate 6 is arranged to match the discharge port 7. The waste collecting holes 5 correspond to the far rest convex portion 23, and the discharge port 7 corresponds to the near rest concave portion 21.

[0037] The automobile parts are installed in conjunction with each independent loading module. Initially, the periodic airtightness detection module faces the independent loading module, and the driving lifting column 24 is shortened, so that the periodic airtightness detection module and the independent loading module are sealed and fitted. The driving member 19 drives the gear 18 to rotate a certain angle at a time, and the transmission gear ring 30 rotates 120 degrees in conjunction with the meshing transmission of the driving gear 18. Since the transmission gear ring 30 rotates synchronously with the transmission inner ring 17 and the transmission outer ring 15, the periodic airtightness detection module installed on the transmission outer ring 15 also rotates 120 degrees. In this process, the airtightness detection is completed, and then the driving lifting column 24 is shortened to make the periodic airtightness detection module and the independent loading module seal and fit. Under the lifting action of the column 24, the periodic airtightness detection module is separated from the independent loading module, and the automobile parts that have passed the airtightness detection are still retained in the independent loading module. The automobile parts that have not passed the airtightness detection are separated from the airtightness detection state as the independent loading module rotates during the rotation process, and fall into the waste collection hole 5, enter the bottom of the arc support installation cover 1, and are discharged through the electrically driven material guide gate 3. The automobile parts that have passed the airtightness detection and remain in the independent loading module are rotated at a certain angle and fall on the inclined material guide plate 6 and are discharged to the externally arranged conveying mechanism in conjunction with the discharge port 7, and enter the next processing step;

[0038] After completing one airtightness test, the annular loading sleeve 26 is rotated by a certain angle in cooperation with the loading rotating ring 32 so that the next independent loading module in the rotation sequence is aligned with the periodic airtightness test module, and the above steps are repeated to complete the airtightness test operation of this group. Alternatively, the rotation sequence may not be performed, and only the auto parts may be supplemented and the airtightness test may be performed again;

[0039] It can also be rotated in multiples of 120 degrees at a time to achieve multiple airtightness tests, which is suitable for automotive parts testing operations with high airtightness requirements.

[0040] Example 2, based on Example 1, please refer to Figure 1 to Figure 6 In the embodiment of the present invention, the periodic cam module 22 includes three groups of distal resting convex portions 23 arranged at equal intervals on the outer side of the lifting mounting plate 20, and a proximal resting concave portion 21 is arranged between adjacent distal resting convex portions 23, and a smooth transition is performed between adjacent distal resting convex portions 23 and proximal resting concave portions 21;

[0041] The periodic airtight detection module includes a horizontally arranged mounting cylinder 13, one end of which cooperates with two transmission outer rings 15 to be connected to a fixed mounting frame 14, a reset mounting cylinder 27 is arranged at the middle position of the end of the mounting cylinder 13 on one side of the fixed mounting frame 14, a transmission guide column 60 is arranged through the reset mounting cylinder 27, one end of the transmission guide column 60 extends into the mounting cylinder 13 and cooperates with the mounting cylinder 13 to be provided with a transmission piston 55, a reset spring 56 is arranged inside the reset mounting cylinder 27, one end of the reset spring 56 is connected to the inner wall of the reset mounting cylinder 27, and the other end of the reset spring 56 is connected to the transmission outer ring 15. The other end of the transmission guide column 60 extends out of the reset mounting cylinder 27 and is rotatably provided with a deflection driving member 57, and a deflection wheel frame 58 is connected to the deflection driving member 57, and the end of the deflection wheel frame 58 cooperates with the far rest convex portion 23 and the near rest concave portion 21 to rotatably provide a rotating guide wheel 59; the other end of the mounting cylinder 13 is provided with a connecting mounting cylinder 12, and a change-of-direction connecting cylinder 11 is vertically downwardly provided on the wall of the connecting mounting cylinder 12, and a top sealing mounting cylinder 10 is provided at the end of the change-of-direction connecting cylinder 11, and an annular sealing extrusion groove 54 is provided on the bottom wall of the top sealing mounting cylinder 10;

[0042] The rotating guide wheel 59 at one end of the transmission guide column 60 is always in contact with the surface of the far rest convex portion 23 and the near rest concave portion 21 under the action of the return spring 56. When the transmission inner ring 17 and the transmission outer ring 15 rotate with the transmission gear ring 30, the periodic airtightness detection module fixed on the transmission outer ring 15 also rotates accordingly. During the rotation process, the far rest convex portion 23 and the near rest concave portion 21 periodically squeeze and release the transmission guide column 60, so that the position of the transmission piston 55 fixed at one end thereof in the mounting cylinder 13 changes periodically, thereby changing the side of the transmission piston 55. When the transmission guide column 60 and the rotating guide wheel 59 thereon move on the far rest convex portion 23, the air pressure is the maximum, and the process of moving on the far rest convex portion 23 is the pressure holding process, which ensures that the airtightness detection of automobile parts has a sufficient pressure holding time. The mechanical structure ensures the stability of the airtightness detection. When the rotating guide wheel 59 moves from one near rest concave portion 21 to another adjacent near rest convex portion, a cycle of airtightness detection is completed and stops on the near rest concave portion 21. At this time, the transmission guide column 60 and the transmission piston 55 are reset;

[0043] The pressure on one side of the transmission piston 55 is communicated through the connecting installation cylinder 12 and the direction-changing connecting cylinder 11, and acts on the automobile parts in the bottom sealing installation cylinder 9 through the top sealing installation cylinder 10;

[0044] By adjusting the deflection angle of the deflection wheel frame 58 through the deflection driving member 57, the reset position of the transmission guide column 60 and the transmission piston 55 is changed, so as to achieve different airtightness detection pressures in the same rotation process, which is suitable for airtightness detection of different automobile accessories.

[0045] Example 3, based on Example 1, please refer to Figure 7 to Figure 12 In the embodiment of the present invention, the independent loading module includes a bottom sealing installation cylinder 9, an L-shaped installation frame 29 is arranged on the outer side of the bottom sealing installation cylinder 9, a reinforcing ring 41 is arranged at the bottom of the bottom sealing installation cylinder 9 in cooperation with the L-shaped installation frame 29, a damping driving column 36 is arranged on the L-shaped installation frame 29, a supporting connecting frame 35 is arranged for the damping driving column 36 to rotate, and the supporting connecting frame 35 is connected to the outer end of the loading installation column 34; an extrusion sealing ring 39 is arranged on the top cylinder wall of the bottom sealing installation cylinder 9 in cooperation with the annular sealing extrusion groove 54, a limiting installation ring 43 is arranged on the inner wall of the bottom sealing installation cylinder 9, a plurality of positioning installation holes 44 are arranged on the limiting installation ring 43, a limiting annular loading cylinder 51 is arranged in cooperation with the limiting installation ring 43 inside the bottom sealing installation cylinder 9, a hanging ring 53 is symmetrically arranged on the top of the limiting annular loading cylinder 51, and the limiting annular loading cylinder 51 is The bottom of the tube 51 is provided with a plurality of positioning and mounting columns 52 in cooperation with the positioning and mounting holes 44; a microporous flow guide tube 40 is provided at the bottom of the bottom sealing and mounting tube 9, one end of the microporous flow guide tube 40 is connected with the bottom sealing and mounting tube 9, a spherical mounting cover 48 is provided at the other end of the microporous flow guide tube 40, an air bag 49 is provided in the spherical mounting cover 48 at the connection between the spherical mounting cover 48 and the microporous flow guide tube 40, an air pressure sensor 50 is provided on the inner wall of the spherical mounting cover 48, the air pressure sensor 50 is wirelessly connected with the damping drive column 36, or is electrically connected through internal wiring; a plurality of protective conduits 46 are provided on the tube wall of the microporous flow guide tube 40, an overflow valve 47 is provided in the protective conduit 46, the triggering air pressure of the overflow valve 47 is greater than the maximum detection air pressure of the air pressure sensor 50, and a spherical mesh cover 45 is provided on the inner wall of the bottom sealing and mounting tube 9 in cooperation with the microporous flow guide tube 40 cover.

[0046] Specifically, the limiting annular loading cylinder 51 is installed in conjunction with different types of automobile accessories, which can be installed by buckle, rubber extrusion, adhesion, etc. Then, with the cooperation of the positioning installation hole 44 and the positioning installation column 52, the limiting annular loading cylinder 51 is installed on the limiting installation ring 43 in the bottom sealing installation cylinder 9;

[0047] The top sealing installation cylinder 10 cooperates with the lifting and lowering of the driving lifting column 24 to be extruded and installed with the bottom sealing installation cylinder 9. At this time, the extrusion sealing ring 39 is inserted into the annular sealing extrusion groove 54 to complete the positioning and extrusion sealing installation. With the rotation of the periodic cam module 22, the pressure on one side of the automobile accessory is increased and maintained, thereby realizing the airtightness detection;

[0048] When the air tightness of the automobile parts fails, that is, there is a leak, the air pressure on one side of the automobile parts increases, and through the enlargement of the microporous guide tube 40, the guide radius of the microporous guide tube 40 is much smaller than the bottom sealing installation tube 9, the airbag 49 can be expanded under a very small pressure change, and the air pressure between the airbag 49 and the spherical installation cover 48 increases sharply, realizing secondary amplification, which can shorten the time for air tightness detection. At this time, the internal air pressure sensor 50 controls the damping drive column 36 through wireless communication, so that the damping drive column 36 weakens the electromagnetic damping, and under the high pressure in the top sealing installation tube 10, the bottom sealing installation tube 9 is driven to rotate, and the limiting annular loading tube 51 and the automobile parts that have not passed the air tightness test are thrown out and fall into the waste collection hole 5;

[0049] When the automobile parts leak seriously, the high-pressure gas is discharged from the protection conduit 46 through the relief valve 47 to complete the pressure relief.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automotive parts air tightness testing device, comprising a curved support mounting cover, a plurality of columnar support feet are arranged at equal angles on the outer side of the curved support mounting cover, the outer ends of the columnar support feet are all provided with support gaskets, a support mounting plate is arranged at the opening of the curved support mounting cover, and a conical retaining ring is arranged on the edge of the support mounting plate, characterized in that: Also includes: A vertical support mounting column is arranged at the center position of the support mounting plate, a lifting mounting plate is arranged directly above the support mounting column, a driving lifting column is arranged at the center position of the upper end of the support mounting column, the outer end of the driving lifting column is fixedly connected to the center position of one end of the lifting mounting plate, and a plurality of directional telescopic rods are arranged at equal angles on the upper end of the support mounting column to cooperate with the driving lifting column, and the outer ends of the directional telescopic rods are connected to one end of the lifting mounting plate; Transmission inner rings are symmetrically arranged at both ends of the lifting installation plate, and transmission outer rings are concentrically arranged outside the transmission inner rings. The transmission inner rings and the transmission outer rings are connected by transmission installation rods arranged at equal angles. A limited rotation ring is arranged on one side of the transmission inner ring facing the lifting installation plate, and limited rotation grooves are arranged at both ends of the lifting installation plate to cooperate with the limited rotation ring; An airtight detection mechanism, the airtight detection mechanism comprising three sets of periodic airtight detection modules and a periodic cam module arranged outside the lifting installation plate, the three sets of periodic airtight detection modules being arranged at equal angles on two transmission outer rings; The periodic cam module comprises three groups of distal rest convex parts arranged at equal intervals on the outer side of the lifting installation plate, and proximal rest concave parts are arranged between adjacent distal rest convex parts, and smooth transition is performed between adjacent distal rest convex parts and proximal rest concave parts; The periodic airtight detection module comprises a horizontally arranged mounting cylinder, one end of which cooperates with two transmission outer rings and is connected to a fixed mounting frame, a reset mounting cylinder is arranged at the middle position of the end of the mounting cylinder on one side of the fixed mounting frame, a transmission guide column is arranged through the reset mounting cylinder, one end of the transmission guide column extends into the mounting cylinder and cooperates with the mounting cylinder to be provided with a transmission piston, a reset spring is arranged inside the reset mounting cylinder, one end of the reset spring is connected to the inner wall of the reset mounting cylinder, and the other end of the reset spring is connected to the transmission piston; The other end of the installation cylinder is provided with a connecting installation cylinder, a direction-changing connecting cylinder is vertically arranged downward on the wall of the connecting installation cylinder, a top sealing installation cylinder is arranged at the end of the direction-changing connecting cylinder, and an annular sealing extrusion groove is arranged on the bottom wall of the top sealing installation cylinder; A rotating loading mechanism, the rotating loading mechanism comprising a loading rotating ring arranged outside the supporting mounting column, an annular loading sleeve is provided in cooperation with the rotating sleeve of the loading rotating ring, a plurality of groups of loading mounting columns are arranged at equal angles on the outside of the annular loading sleeve, and independent loading modules are arranged at the outer ends of the loading mounting columns, and the number of independent loading modules is an integer multiple of the number of periodic airtight detection modules; The independent loading module comprises a bottom sealing installation cylinder, an L-shaped installation frame is arranged outside the bottom sealing installation cylinder, a damping driving column is arranged on the L-shaped installation frame, a supporting connection frame is rotatably arranged on the damping driving column, and the supporting connection frame is connected to the outer end of the loading installation column; An extrusion sealing ring is arranged on the top cylinder wall of the bottom sealing installation cylinder in cooperation with the annular sealing extrusion groove, a limited position installation ring is arranged on the inner wall of the bottom sealing installation cylinder, a plurality of positioning installation holes are arranged on the limited position installation ring, and a limited position annular loading cylinder is arranged inside the bottom sealing installation cylinder in cooperation with the limited position installation ring; A microporous guide tube is arranged at the bottom of the bottom sealing installation tube, one end of the microporous guide tube is connected with the bottom sealing installation tube, a spherical installation cover is arranged at the other end of the microporous guide tube, an air bag is arranged inside the spherical installation cover at the connection between the spherical installation cover and the microporous guide tube, an air pressure sensor is arranged on the inner wall of the spherical installation cover, and the air pressure sensor is wirelessly connected with the damping drive column; The microporous guide tube wall is connected with a plurality of protective ducts, in which an overflow valve is arranged, the triggering air pressure of the overflow valve is greater than the maximum detection air pressure of the air pressure sensor, and a spherical mesh cover is arranged on the inner wall of the bottom sealing installation tube in conjunction with the microporous guide tube cover.

2. The air tightness testing device for automobile parts according to claim 1, characterized in that: An electrically driven material guiding gate is rotatably arranged at the bottom of the arc surface support mounting cover.

3. The air tightness testing device for automobile parts according to claim 1, characterized in that: A plurality of driving members are embedded in the other end of the lifting installation plate, and a driving gear is arranged at one end of each driving member through a rotating shaft. A driving gear ring is arranged on the inner wall of the transmission inner ring on the same side as the driving gear, and the driving gear and the transmission gear ring are meshed and matched.

4. The air tightness testing device for automobile parts according to claim 1, characterized in that: The other end of the transmission guide column extends out of the reset mounting cylinder and is rotatably provided with a deflection driving member, a deflection wheel frame is connected to the deflection driving member, and a rotating guide wheel is rotatably provided at the end of the deflection wheel frame in cooperation with a far rest convex portion and a near rest concave portion.

5. The air tightness testing device for automobile parts according to claim 1, characterized in that: The inner wall of the annular loading sleeve is provided with an annular power supply rail, and the loading rotating ring is provided with an annular power supply groove in coordination with the annular power supply rail.

6. The air tightness testing device for automobile parts according to claim 1, characterized in that: The bottom of the bottom sealing mounting cylinder is connected with an L-shaped mounting frame and is provided with a reinforcement ring.

7. The air tightness testing equipment for automobile parts according to claim 1, characterized in that: The top of the position-limiting annular loading cylinder is symmetrically provided with hanging rings, and the bottom of the position-limiting annular loading cylinder is matched with the positioning installation holes and provided with a plurality of positioning installation columns.

8. The air tightness testing equipment for automobile parts according to claim 1, characterized in that: Three groups of waste collecting holes are arranged at equal angles on the support mounting plate, and a discharge port is arranged on the support mounting plate between the waste collecting holes. The discharge port extends out of the arc support mounting cover, and an inclined guide plate is arranged to match the discharge port. The waste collecting holes correspond to the far rest convex portion, and the discharge port corresponds to the near rest concave portion.

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