CN116105950B - Automatic detection device and detection method for air tightness of automobile lampshade - Google Patents
Automatic detection device and detection method for air tightness of automobile lampshade Download PDFInfo
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- CN116105950B CN116105950B CN202310351980.9A CN202310351980A CN116105950B CN 116105950 B CN116105950 B CN 116105950B CN 202310351980 A CN202310351980 A CN 202310351980A CN 116105950 B CN116105950 B CN 116105950B
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- light
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- lamp shade
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/38—Investigating fluid-tightness of structures by using light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to the technical field of automobile lampshade detection, in particular to an automatic detection device and a detection method for the air tightness of an automobile lampshade.
Description
Technical Field
The invention relates to the technical field of automobile lampshade detection, in particular to an automatic detection device and method for automobile lampshade air tightness.
Background
When manufacturing the car light, there is strict requirement to the sealing performance of car light, because the poor car light of sealing performance can get into steam, dust etc. in the use, not only influence the pleasing to the eye of car light, can also cause adverse effect to car light performance, life-span etc. therefore, every car light must all carry out the gas tightness and detect after production assembly is accomplished.
At present, a plurality of car lamp enterprises can use an air tightness detector to detect car lamps, the air tightness detector transmits air to the car lamps, and whether the car lamps leak air is detected to judge the tightness of the car lamps. When the car light detects, the air inlet gun and the pressure measuring device of the air tightness detector need be connected with the air inlet and the pressure measuring port reserved on the car light respectively, after the test is finished, the air inlet and the pressure measuring port reserved on the car light need to be plugged, the production procedure is increased, when the plugging is not in place, micropores possibly exist at the air inlet and the pressure measuring port after plugging, the problem of new air tightness is generated, normal use of the car light is affected, in the car light assembling process, cracks possibly occur when the lamp shade is severely impacted, and the cracks possibly do not leak air, but in the subsequent use process, the crack positions leak air easily to form air leakage hidden danger, the traditional air tightness detector cannot detect the cracks on the car light, and the quality of car light products can be affected.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an automatic detection device and a detection method for the air tightness of an automobile lampshade.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an automatic detection device of car lamp shade gas tightness, includes bottom plate, the cover body and light detection mechanism, sealing connection between the lower extreme of the cover body and the bottom plate, the fixed lamp shade fixture that is provided with in upper end of bottom plate and light detection mechanism, light detection mechanism includes camera, light receiving plate and the light attenuation mechanism of setting in light receiving plate the place ahead, and the light that the lamp shade sent shines on the light receiving plate behind light attenuation mechanism, acquires the formation of image of light on the light receiving plate through the camera, be provided with the air cock on the cover body, the attenuation degree of light attenuation mechanism diminishes and grow along with the inside gas pressure of cover.
Preferably, the light attenuation mechanism comprises a barrel and a liquid storage tank, a first light-transmitting plate is fixedly arranged at the front end of the inner wall of the barrel, a first movable ring is arranged in the barrel, a rubber ring is fixedly arranged on the outer wall of the first movable ring, the rubber ring is in sealing connection with the inner wall of the barrel, a second light-transmitting plate parallel to the first light-transmitting plate is arranged on the inner wall of the first movable ring in a sealing manner, light absorption liquid is filled in the area between the first light-transmitting plate, the second light-transmitting plate and the barrel, the area between the first light-transmitting plate, the second light-transmitting plate and the barrel is communicated with the liquid storage tank through a connecting pipe, a second movable ring is arranged in the barrel, a telescopic rod is arranged between the second movable ring and the second light-transmitting plate, the telescopic rod comprises a telescopic rod fixing part and a telescopic rod moving part, and a spring is arranged between the telescopic rod moving part and the telescopic rod fixing part.
Preferably, the cylinder is further provided with a second electric push rod perpendicular to the second light-transmitting plate, and the output end of the second electric push rod is fixedly connected with the second movable ring.
Preferably, the end face of the cylinder is provided with a sealing plate, one end of the cylinder, which is close to the sealing plate, is provided with a through hole, the light receiving plate is embedded and arranged on one side of the sealing plate, which is close to the cylinder, and the camera is arranged on one side of the first movable ring, which is close to the light receiving plate.
Preferably, the lamp shade clamping mechanism comprises a plurality of mutually independent first electric push rods, the first electric push rods are horizontally arranged, the output ends of the first electric push rods are provided with pressing plates, and the lamp shade is clamped by the pressing plates driven by the first electric push rods.
Preferably, the cover body is provided with a feed inlet, and the feed inlet is provided with a cover plate in a sealing manner.
Preferably, the automatic detection method for the air tightness of the automobile lampshade comprises the following steps:
and 4, maintaining the pressure for a period of time, observing whether the brightness of an image formed by the light on the light receiving plate changes, if not, ensuring that the air tightness of the lampshade is good, and if so, ensuring that the air tightness of the lampshade is unqualified.
Preferably, in the step, the image obtained by the camera is compared with the standard image, and whether an obvious bright spot or a dark area exists on the image is detected.
Preferably, in said step, the dwell time is 10-30min.
The beneficial effects of the invention are as follows:
1. when the detection device is used, the air inlet and the pressure measuring port are not required to be reserved on the lamp shade of the car lamp, the problem of new air tightness is avoided when the air inlet and the pressure measuring port are plugged subsequently, the working efficiency is effectively improved, when the air tightness of the car lamp is detected, the lamp shade is fixed through the lamp shade clamping mechanism, the lamp shade is connected with the power line, the cylinder is vacuumized through the air tap, the lamp shade is powered on, light emitted by the lamp shade is projected onto the light receiving plate after passing through the light attenuating mechanism, an image formed by light on the light receiving plate is acquired through the camera, the pressure is maintained for a period of time, whether the brightness of the image formed by the light on the light receiving plate changes or not is observed, if the air in the lamp shade leaks, the air in the lamp shade can enter the cylinder, the air pressure in the cylinder becomes high, the telescopic rod contracts, the distance between the second light transmitting plate and the first light transmitting plate becomes smaller, the distance of the light passing through the light absorbing liquid becomes shorter, the attenuation capacity of the light attenuating mechanism becomes lighter, the image formed by the light receiving plate on the light receiving plate, the light emitting device becomes light, the image formed by the light receiving plate, the light and the image formed by the light receiving plate, and the light receiving plate and the image and formed in the light.
2. When the detection device is used, an image acquired by the camera is compared with a standard image, if an airtight crack exists on the lampshade, light can deflect after passing through the crack on the lampshade, the refraction direction of the light is changed, whether an obvious bright spot or a dark area exists on the image is detected, and if the obvious bright spot or the dark area exists, the crack exists on the lampshade, and the hidden danger of air leakage exists.
Drawings
Fig. 1 is a schematic diagram of a front view structure of an automatic detection device for the tightness of an automobile lampshade;
fig. 2 is a schematic top view of an automatic detection device for the tightness of an automobile lampshade according to the present invention;
FIG. 3 is a schematic cross-sectional view of FIG. 2 of an automatic detection device for the air tightness of an automobile lampshade according to the present invention;
fig. 4 is a schematic diagram of a front view structure of a base of an automatic detection device for tightness of a lampshade of an automobile according to the present invention;
fig. 5 is a schematic cross-sectional structural view of a cylinder of an automatic detection device for the tightness of an automobile lampshade according to the present invention;
fig. 6 is an enlarged schematic view of the structure of the automatic detecting device for tightness of the automobile lampshade in fig. 5;
fig. 7 is a schematic side view of a first movable ring of the automatic detection device for tightness of a lampshade of an automobile.
In the figure: 1 bottom plate, 2 cover bodies, 3 first electric putter, 4 clamp plates, 5 barrel, 6 shrouding, 7 first printing opacity boards, 8 second printing opacity boards, 9 first expansion ring, 10 rubber circle, 11 telescopic link, 12 second expansion ring, 13 cameras, 14 second electric putter, 15 connecting pipes, 16 liquid storage tanks, 17 scavenge ports, 18 filter screens, 19 air cock, 20 feed inlet, 21 apron, 22 through-holes, 23 sealing washer, 24 light receiving boards, 25 first bracing piece, 26 second bracing piece, 111 telescopic link fixed part, 112 telescopic link movable part, 113 springs.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-7, an automatic detection device for the air tightness of an automobile lampshade comprises a bottom plate 1, a cover body 2 and a light detection mechanism, wherein the lower end of the cover body 2 is in sealing connection with the bottom plate 1, the upper end of the bottom plate 1 is fixedly provided with a lampshade clamping mechanism and the light detection mechanism, the light detection mechanism comprises a camera 13, a light receiving plate 24 and a light attenuation mechanism arranged in front of the light receiving plate 24, light emitted by a lampshade irradiates the light receiving plate 24 after passing through the light attenuation mechanism, imaging of the light on the light receiving plate 24 is obtained through the camera 13, an air tap 19 is arranged on the cover body 2, and the attenuation degree of the light attenuation mechanism is increased along with the decrease of the internal gas pressure of the cover body 2.
The light attenuation mechanism comprises a barrel 5 and a liquid storage tank 16, a first light-transmitting plate 7 is fixedly arranged at the front end of the inner wall of the barrel 5, a first movable ring 9 is arranged in the barrel 5, a rubber ring 10 is fixedly arranged on the outer wall of the first movable ring 9, the rubber ring 10 is in sealing connection with the inner wall of the barrel 5, a second light-transmitting plate 8 parallel to the first light-transmitting plate 7 is arranged on the inner wall of the first movable ring 9 in a sealing manner, light absorption liquid is filled in the area between the first light-transmitting plate 7, the second light-transmitting plate 8 and the barrel 5, the area between the first light-transmitting plate 7, the second light-transmitting plate 8 and the barrel 5 is communicated with the liquid storage tank 16 through a connecting pipe 15, a second movable ring 12 is arranged in the barrel 5, a telescopic rod 11 is arranged between the second movable ring 12 and the second light-transmitting plate 8, the telescopic rod 11 comprises a telescopic rod fixing part 111 and a telescopic rod movable part 112, the telescopic rod movable part 112 is inserted into the telescopic rod fixing part 111, and a spring 113 is arranged between the telescopic rod movable part 112 and the telescopic rod fixing part 111.
The barrel 5 is also provided with a second electric push rod 14 perpendicular to the second light-transmitting plate 8, the output end of the second electric push rod 14 is fixedly connected with the second movable ring 12, the fixed part of the second electric push rod 14 is fixedly connected with the bottom plate 1 through a second support rod 26, and a sealing ring 23 is arranged on the inner wall of the barrel 5 at the contact position with the output end of the second electric push rod 14.
The upper end of the liquid storage tank 16 is provided with a liquid storage tank cover body, the liquid storage tank cover body is provided with a ventilation opening 17, the ventilation opening 17 is provided with a filter screen 18, external dust is prevented from entering the liquid storage tank 16 through the filter screen 18, the arrangement of the ventilation opening 17 enables the internal pressure of the liquid storage tank 16 to be balanced with the external atmospheric pressure, light absorption liquid in the liquid storage tank 16 is a mixture of purified water and water-based black pigment, and the addition amount of the water-based black pigment is 0.05-0.3g/L.
The end face of the cylinder body 5 is provided with a sealing plate 6, one end of the cylinder body 5, which is close to the sealing plate 6, is provided with a through hole 22, the light receiving plate 24 is embedded and arranged on one side of the sealing plate 6, which is close to the cylinder body 5, and the camera 13 is arranged on one side of the first movable ring 9, which is close to the light receiving plate 24.
The lamp shade fixture includes a plurality of mutually independent first electric putter 3, first electric putter 3 is the level setting, and clamp plate 4 is installed to the output of first electric putter 3, and it is cliied the lamp shade to drive clamp plate 4 through first electric putter 3, and first electric putter 3 passes through first bracing piece 25 and bottom plate 1 fixed connection, and in this embodiment, the quantity of first electric putter 3 is 3, and the both sides of lamp shade are cliied through two sets of first electric putter 3, and another first electric putter 3 supports the back of lamp shade.
The cover body 2 is provided with a feed inlet 20, the feed inlet 20 is provided with a cover plate 21 in a sealing manner, the cover plate 21 and the feed inlet 20 can be connected through screws, and a sealing gasket is arranged between the cover plate 21 and the feed inlet 20.
An automatic detection method for the air tightness of an automobile lampshade comprises the following steps:
and 4, maintaining the pressure for a period of time, observing whether the brightness of the image formed by the light on the light receiving plate 24 changes, if not, ensuring that the air tightness of the lampshade is good, and if so, ensuring that the air tightness of the lampshade is unqualified.
In the step 3, the image obtained by the camera 13 is compared with the standard image, and whether an obvious bright spot or a dark area exists on the image is detected.
In the step 4, the dwell time is 10-30min.
When the detection device is used, the air inlet and the pressure measuring port are not required to be reserved on the lamp shade of the car lamp, the problem that whether the brightness of the image formed by the light on the light receiving plate 24 changes is avoided when the follow-up plugging of the air inlet and the pressure measuring port occurs is solved, the working efficiency is effectively improved, when the air tightness of the car lamp is detected, the lamp shade is fixed through the lamp shade clamping mechanism, and is connected with a power line, the vacuum pump is connected with the air tap 19, the cylinder 5 is vacuumized through the air tap 19, the lamp shade is connected with a power supply, the light emitted by the lamp shade passes through the light attenuating mechanism and then projects onto the light receiving plate 24, the image formed by the light on the light receiving plate 24 is acquired through the camera 13, the pressure is maintained for a period of time, the air in the lamp shade can enter the cylinder 5, the air pressure in the cylinder 5 is increased, the telescopic rod 11 is contracted, the distance between the second light transmitting plate 8 and the first light transmitting plate 7 is reduced, the distance between the light passes through the distance of the light absorbing liquid, the light attenuating mechanism attenuates the image formed by the light on the light receiving plate 24, the image formed by the light receiving plate 24 is unqualified, if the light in the lamp shade is unqualified, the light tightness of the light receiving plate is not changed, and the light tightness between the light receiving plate is good, and the light tightness is not changed, and the light tightness between the light receiving plate is not changed, and the light tightness is not is formed, and the light tightness is not is the light tight, and the light tightness.
When the detection device is used, an image acquired by the camera 13 is compared with a standard image, if an airtight crack exists on the lampshade, light can deflect after passing through the crack on the lampshade, the refraction direction of the light is changed, whether an obvious bright spot or a dark area exists on the image is detected, and if the obvious bright spot or the dark area exists, the crack exists on the lampshade, and the hidden danger of air leakage exists.
The device is also provided with a second electric push rod 14, the output end of the second electric push rod 14 is fixedly connected with the second movable ring 12, and the second movable ring 12 is driven to move through the second electric push rod 14, so that the initial position of the second movable ring 12 is changed, the initial distance between the second light-transmitting plate 8 and the first light-transmitting plate 7 is changed, the light attenuation capacity of the light attenuation mechanism is timely adjusted according to lampshades with different powers, the light is ensured not to be too bright when being emitted to the light receiving plate 24, and whether obvious bright spots or dark areas exist or not is conveniently distinguished.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The utility model provides an automatic detection device of car lamp shade gas tightness, includes bottom plate (1), cover body (2) and light detection mechanism, its characterized in that, sealing connection between the lower extreme of cover body (2) and bottom plate (1), the upper end of bottom plate (1) is fixedly provided with lamp shade fixture and light detection mechanism, light detection mechanism includes camera (13), light receiving plate (24) and sets up the light attenuation mechanism in light receiving plate (24) the place ahead, and the light that the lamp shade sent shines on light receiving plate (24) after light attenuation mechanism, acquires the formation of image of light on light receiving plate (24) through camera (13), be provided with air cock (19) on cover body (2), the attenuation degree of light attenuation mechanism is along with the reduction of the inside gas pressure of cover body (2) and is grow;
the light attenuation mechanism comprises a barrel body (5) and a liquid storage tank (16), a first light-transmitting plate (7) is fixedly arranged at the front end of the inner wall of the barrel body (5), a first movable ring (9) is arranged in the barrel body (5), a rubber ring (10) is fixedly arranged on the outer wall of the first movable ring (9), the rubber ring (10) is in sealing connection with the inner wall of the barrel body (5), a second light-transmitting plate (8) parallel to the first light-transmitting plate (7) is arranged on the inner wall of the first movable ring (9) in a sealing manner, light-absorbing liquid is filled in the area between the first light-transmitting plate (7), the second light-transmitting plate (8) and the barrel body (5), the area between the first light-transmitting plate (7), the second light-transmitting plate (8) and the barrel body (5) is communicated with the liquid storage tank (16) through a connecting pipe (15), a second movable ring (12) is arranged in the interior of the barrel body (5), a telescopic rod (11) is arranged between the second movable ring (12) and the second light-transmitting plate (8), the telescopic rod (11) comprises a telescopic rod (111) and a telescopic rod (112) which is arranged in the telescopic rod (112) and a telescopic rod (112) which is arranged in the fixed part, a spring (113) is arranged between the telescopic rod movable part (112) and the telescopic rod fixed part (111).
2. The automatic detection device for the air tightness of the automobile lampshade according to claim 1, wherein the cylinder (5) is further provided with a second electric push rod (14) perpendicular to the second light-transmitting plate (8), and the output end of the second electric push rod (14) is fixedly connected with the second movable ring (12).
3. The automatic detection device for the air tightness of the automobile lampshade according to claim 2, wherein a sealing plate (6) is arranged on the end face of the cylinder body (5), a through hole (22) is formed in one end, close to the sealing plate (6), of the cylinder body (5), the light receiving plate (24) is embedded and installed on one side, close to the cylinder body (5), of the sealing plate (6), and the camera (13) is installed on one side, close to the light receiving plate (24), of the first movable ring (9).
4. The automatic detection device for the air tightness of the automobile lampshade according to claim 1, wherein the lampshade clamping mechanism comprises a plurality of mutually independent first electric push rods (3), the first electric push rods (3) are horizontally arranged, a pressing plate (4) is arranged at the output end of each first electric push rod (3), and the first electric push rods (3) drive the pressing plate (4) to clamp the lampshade.
5. The automatic detection device for the air tightness of the automobile lampshade according to claim 1, wherein the lampshade body (2) is provided with a feed port (20), and a cover plate (21) is arranged on the feed port (20) in a sealing mode.
6. An automatic detection method for the air tightness of an automobile lampshade is characterized by adopting the automatic detection device for the air tightness of the automobile lampshade according to any one of claims 1-5, and comprising the following steps:
step 1, fixing a lamp shade through a lamp shade clamping mechanism, connecting the lamp shade with a power line, and covering a cover plate (21) on a feed inlet (20);
step 2, vacuumizing the cylinder (5) through the air tap, switching on a lamp shade, and projecting light rays emitted by the lamp shade onto a light ray receiving plate (24) after passing through a light ray attenuation mechanism;
step 3, acquiring an image formed by light on a light receiving plate (24) through a camera (13);
and 4, maintaining the pressure for a period of time, observing whether the brightness of an image formed by the light on the light receiving plate (24) changes, if not, ensuring that the air tightness of the lampshade is good, and if so, ensuring that the air tightness of the lampshade is unqualified.
7. The automatic detection method for the air tightness of the automobile lampshade according to claim 6, wherein in the step 3, an image obtained by a camera (13) is compared with a standard image, and whether obvious bright spots or dark areas exist on the image is detected.
8. The automated inspection method of the tightness of the automotive lamp shade according to claim 6, wherein in the step 4, the dwell time is 10-30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310351980.9A CN116105950B (en) | 2023-04-04 | 2023-04-04 | Automatic detection device and detection method for air tightness of automobile lampshade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310351980.9A CN116105950B (en) | 2023-04-04 | 2023-04-04 | Automatic detection device and detection method for air tightness of automobile lampshade |
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| CN116105950B true CN116105950B (en) | 2023-07-14 |
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