Automatic air tightness detection device and method for automobile lamp

Abstract

The invention belongs to the technical field of automobile lamp detection, and particularly relates to an automatic air tightness detection device and method for an automobile lamp, and the device is mainly composed of a horizontal annular guide rail pair, a positioning base, a first air tightness detection assembly, a lampshade dismounting assembly and a second air tightness detection assembly. For an automobile lamp with a multi-sealing structure formed by a lamp holder and a lampshade, the device can perform integral extensive airtightness detection by using the first airtightness detection assembly, can also disassemble the lampshade by using the lampshade disassembly assembly, and performs zoned detection on a sealing part at the front end of the lamp holder by using the second airtightness detection assembly, so that the airtightness detection accuracy is improved. In this way, high-standard detection of the automobile lamp can be realized, and the probability of subsequent poor airtightness of the automobile lamp product is greatly reduced. Besides, automatic batch detection of the automobile lamps can be realized, the detection efficiency is relatively high, and the requirements of industrial production of the automobile lamps are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive lamp detection, and particularly relates to an automatic airtightness detection device and method for automotive lamps. Background Art

[0002] As an important tool in the modern automotive manufacturing industry, the airtightness detection device for automotive lamps plays an irreplaceable role. By detecting the airtight performance of automotive lamps, it ensures that the vehicle lamps can work properly in various harsh environments. It is widely used in all links of the automotive manufacturing industry, improving production efficiency and ensuring product quality. In the vehicle manufacturing link, automotive manufacturers use airtightness testers to conduct quality inspections on assembled automotive lamps to ensure that each vehicle has good airtightness and provides a reliable driving experience.

[0003] The airtightness detection device for automotive lamps can ensure that the lamps can effectively prevent external substances such as water vapor, dust, and moisture from entering the lamp interior during use by accurately detecting the sealing performance of the lamp cover. Most automotive lamps are composed of a lamp cover, a lamp base, and various vehicle lamps, and the sealing performance between the lamp base and the lamp cover is the object of quality inspection.

[0004] It is found that the existing airtightness detection devices for automotive lamps have deficiencies in use. First, for automotive lamps composed of a lamp cover, a lamp base, and various vehicle lamps, they can only conduct relatively rough airtightness detection as a whole, and cannot conduct zonal detection on the multiple sealing structures between the lamp base and the lamp cover. The detection standard is relatively low, resulting in the phenomenon that automotive lamp products passing the rough airtightness detection are still prone to poor airtightness in the follow-up. Second, they cannot achieve automatic continuous detection of automotive lamps, and the detection efficiency is low. Therefore, it is necessary to optimize and improve the existing airtightness detection devices for automotive lamps. Summary of the Invention

[0005] The purpose of the present invention is to overcome at least one of the above problems existing in the prior art, and provide an automatic airtightness detection device and method for automotive lamps.

[0006] To achieve the above technical purpose and reach the above technical effect, the present invention is realized through the following technical solutions: The present invention provides an automatic airtightness detection device for automotive lamps, including a horizontal annular guide pair, a positioning base, a first airtightness detection component, a lamp cover disassembly component, and a second airtightness detection component; The automotive lamp includes a lamp base, a lamp cover installed at the front end of the lamp base, and a plurality of functional lamps integrated on the lamp base, and a multiple sealing structure is formed between the lamp base and the lamp cover; A plurality of sliders are arranged in the horizontal annular guide pair, and a positioning base is installed on the upper side of each slider. The upper side of the positioning base is provided with a lamp holder adsorption surface that matches the shape of the lower side of the lamp holder, and a number of lamp holder adsorption holes are provided on the lamp holder adsorption surface. A lamp holder suction cup that can adsorb and lock the lamp holder through the lamp holder adsorption holes is embedded and installed inside the positioning base; The horizontal annular guide pair is provided with a feeding station, a first airtightness detection station, a second airtightness detection station, and a discharging station along its running direction; the first airtightness detection component and the lamp cover disassembly component are arranged near the first airtightness detection station, and the second airtightness detection component is arranged near the second airtightness detection station; the first airtightness detection component can perform airtightness detection on the automotive lamp. When the detection is unqualified, first use the lamp cover disassembly component to separate the lamp cover from the lamp holder, and then use the second airtightness detection component to perform sectional detection on the sealed part at the front end of the lamp holder.

[0007] Further, in the above-mentioned automatic airtightness detection device, the lamp holder includes a lamp holder body, a rear cover is installed on the rear side of the lamp holder body, an adjustment hole is opened on the rear cover, a turn signal installation hole, a lamp inlet hole, and a lamp outlet hole are opened on the rear side of the lamp holder body, and a wire harness through hole is opened on the upper side of the lamp holder body.

[0008] Further, in the above-mentioned automatic airtightness detection device, the front end of the lamp holder is provided with a clamping portion, an annular clamping groove is formed by the outer end of the clamping portion being recessed inward, the inner end of the annular clamping groove is connected with an anti-disengagement head through an annular convex plate, and anti-disengagement protrusions are respectively formed by the two side walls of the annular clamping groove protruding inward.

[0009] Further, in the above-mentioned automatic airtightness detection device, a clamping convex plate is provided at the outer edge of the lamp cover, an arc-shaped clamping plate that can be clamped into the area between the anti-disengagement head and the anti-disengagement protrusion is provided at the outer end of the clamping convex plate, and a first limiting plate and a second limiting plate are respectively provided on both sides of the clamping convex plate.

[0010] Further, in the above-mentioned automatic airtightness detection device, the multi-layer sealing structure includes a first outer sealing area, a first inner sealing area, a second inner sealing area, and a second outer sealing area; the clamping convex plate, the first limiting plate, the arc-shaped clamping plate, and the clamping portion together enclose the first outer sealing area of the multi-layer sealing structure; the upper part of the arc-shaped clamping plate, the clamping portion, the annular convex plate, and the anti-disengagement head together enclose the first inner sealing area of the multi-layer sealing structure; the lower part of the arc-shaped clamping plate, the clamping portion, the annular convex plate, and the anti-disengagement head together enclose the second inner sealing area of the multi-layer sealing structure; the clamping convex plate, the second limiting plate, the arc-shaped clamping plate, and the clamping portion together enclose the second outer sealing area of the multi-layer sealing structure.

[0011] Further, in the above-mentioned automatic airtightness detection device, the first airtightness detection component includes a horizontal linear guide pair, a movable frame, a first horizontal push rod, a first plugging head, a second plugging head, a third plugging head, a second horizontal push rod, a fourth plugging head, a vertical push rod, a first air pump, a support plate, a blocking block, a detection air pipe and a first pressure sensor; the upper side of the slider of the horizontal linear guide pair is provided with a movable frame, one end of the movable frame is provided with a first horizontal push rod, and the movable end of the first horizontal push rod is provided with a first plugging head that cooperates with the adjustment hole, a second plugging head that cooperates with the turn signal mounting hole, and a third plugging head that cooperates with the lamp air inlet hole. The other end of the movable frame is provided with a second horizontal push rod, and the movable end of the second horizontal push rod is provided with a fourth plugging head that cooperates with the lamp air outlet hole; a vertical push rod and a first air pump are installed in the middle of the movable frame, and the movable end of the vertical push rod is connected with a blocking block that cooperates with the wire harness perforation through a support plate. A detection air pipe communicated with the output end of the first air pump and a first pressure sensor for detecting the internal pressure of the lamp are installed in the blocking block.

[0012] Further, in the above-mentioned automatic airtightness detection device, the lamp cover disassembly component includes a first base, a third horizontal push rod and a lamp cover suction cup. The third horizontal push rod is installed on the first base, and the movable end of the third horizontal push rod is provided with a lamp cover suction cup. The lamp cover suction cup is provided with a lamp cover adsorption surface that matches the shape of the outer side of the lamp cover, and a plurality of lamp cover adsorption holes are evenly distributed on the lamp cover adsorption surface.

[0013] Further, in the above-mentioned automatic airtightness detection device, the second airtightness detection component includes a second base, a fourth horizontal push rod, a mounting plate, a lamp cover imitation body, a second air pump and a one-in-four-out air distribution valve. The fourth horizontal push rod is installed on the second base, and the movable end of the fourth horizontal push rod is provided with a lamp cover imitation body, a second air pump and a one-in-four-out air distribution valve through the mounting plate; The lamp cover imitation body is provided with a clamping convex plate imitation body that matches the shape of the clamping convex plate. The outer end of the clamping convex plate imitation body is provided with an arc-shaped clamping plate imitation body that matches the shape of the arc-shaped clamping plate. On both sides of the clamping convex plate imitation body, there are respectively a first limiting plate imitation body that matches the shape of the first limiting plate and a second limiting plate imitation body that matches the shape of the second limiting plate; The lamp cover imitation body is installed with a first branch air pipe for detecting the air tightness of the first outer sealing area at the position of the first limiting plate imitation body. The lamp cover imitation body is jointly installed with a second branch air pipe for detecting the air tightness of the first inner sealing area in the upper parts of the clamping convex plate imitation body and the arc clamping plate imitation body. The lamp cover imitation body is jointly installed with a third branch air pipe for detecting the air tightness of the second inner sealing area in the lower parts of the clamping convex plate imitation body and the arc clamping plate imitation body. The lamp cover imitation body is installed with a fourth branch air pipe for detecting the air tightness of the second outer sealing area at the position of the second limiting plate imitation body. Second pressure sensors are installed on the pipelines of the first branch air pipe, the second branch air pipe, the third branch air pipe and the fourth branch air pipe respectively.

[0014] Further, in the above-mentioned automatic air tightness detection device, it further includes a controller, a loading manipulator arranged at the loading station, and an unloading manipulator arranged at the unloading station. The controller is respectively connected to the power components in the horizontal annular guide rail pair, the positioning base, the loading manipulator, the unloading manipulator, the first air tightness detection component, the lamp cover disassembly component and the second air tightness detection component.

[0015] The present invention also provides an automatic air tightness detection method for automotive lamps, which is realized based on the above-mentioned automatic air tightness detection device, and includes the following steps: S1. Use the loading manipulator to transfer the automotive lamp including the lamp base, the lamp cover installed at the front end of the lamp base and multiple functional lamps integrated on the lamp base to the positioning base at the loading station, and use the lamp base suction cup built in the positioning base to adsorb and lock the lamp base. S2. The horizontal annular guide rail pair operates to transfer the automotive lamp from the loading station to the first air tightness detection station. The first air tightness detection component can perform air tightness detection on the automotive lamp. When the air tightness detection result of the first air tightness detection component is unqualified, the automotive lamp is transferred to the unloading station, and the unloading manipulator is used to transfer the automotive lamp to the finished product unqualified area. S3. When the air tightness detection result of the first air tightness detection component is qualified, the automotive lamp is transferred to the second air tightness detection station, and the second air tightness detection component is used to perform partition detection on the sealed part at the front end of the lamp base. If air tightness defects are found in the partition detection, after the automotive lamp is transferred to the unloading station, the unloading manipulator is used to transfer the automotive lamp to the lamp base unqualified area corresponding to the partition, and the lamp cover is default determined to be a qualified product. If no air tightness defects are found in the partition detection, the lamp cover is determined to be unqualified, and subsequently the lamp base is transferred to the lamp base qualified area.

[0016] The beneficial effects of the present invention are: The present invention provides an automatic airtightness detection device for automotive lamps, which mainly consists of a horizontal annular guide pair, a positioning base, a first airtightness detection component, a lamp cover disassembly component, and a second airtightness detection component. For automotive lamps with multiple sealing structures formed between the lamp base and the lamp cover, in addition to using the first airtightness detection component to conduct overall and rough airtightness detection, this device can also use the lamp cover disassembly component to disassemble the lamp cover, and use the second airtightness detection component to conduct zonal detection on the sealing part at the front end of the lamp base. In this way, high-standard detection of automotive lamps can be achieved, and the probability of subsequent airtightness problems in automotive lamp products can be significantly reduced. In addition, the present invention can achieve automatic batch detection of automotive lamps, with relatively high detection efficiency, meeting the requirements of industrialized production of vehicle lamps.

[0017] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of the automatic airtightness detection device of the present invention; Figure 2 is a schematic structural diagram of the automotive lamp in the present invention; Figure 3 is a schematic cross-sectional view of the automotive lamp in the present invention; Figure 4 is a schematic diagram of the zonal position of the multiple sealing structure in the present invention; Figure 5 is a schematic structural diagram of the sealing part at the front end of the lamp base in the present invention; Figure 6 is a schematic structural diagram of the sealing part at the rear end of the lamp cover in the present invention; Figure 7 is a schematic structural diagram of the first airtightness detection component in the present invention; Figure 8 is a schematic structural diagram of the lamp cover disassembly component in the present invention; Figure 9 is a schematic structural diagram of the second airtightness detection component in the present invention; Figure 10 is a schematic structural diagram of the sealing part at the rear end of the lamp cover imitation in the present invention; Figure 11 is a schematic diagram of the sealing part after the lamp cover imitation is docked with the lamp base in the present invention; Figure 12 This is a schematic structural diagram of a one-in-four-out distribution air valve in the present invention; In the attached drawings, the components represented by each reference numeral are as follows: 1 - Lamp holder, 101 - Lamp holder body, 102 - Rear cover, 103 - Adjusting hole, 104 - Turn signal mounting hole, 105 - Lamp inlet hole, 106 - Lamp outlet hole, 107 - Wiring harness perforation, 108 - Clamping part, 109 - Annular clamping groove, 110 - Annular convex plate, 111 - Anti - detachment head, 112 - Anti - detachment protrusion; 2 - Lamp cover, 201 - Clamping convex plate, 202 - Arc clamping plate, 203 - First limiting plate, 204 - Second limiting plate; 3 - Multiple sealing structure, 301 - First outer sealing area, 302 - First inner sealing area, 303 - Second inner sealing area, 304 - Second outer sealing area; 4 - Horizontal annular guide pair; 5 - Positioning base; 6 - First airtightness detection component, 601 - Horizontal linear guide pair, 602 - Movable frame, 603 - First horizontal push rod, 604 - First plugging head, 605 - Second plugging head, 606 - Third plugging head, 607 - Second horizontal push rod, 608 - Fourth plugging head, 609 - Vertical push rod, 610 - First air pump, 611 - Support plate, 612 - Plug block, 613 - Detection air pipe, 614 - First pressure sensor; 7 - Lamp cover disassembly component, 701 - First base, 702 - Third horizontal push rod, 703 - Lamp cover suction cup; 8 - Second airtightness detection component, 801 - Second base, 802 - Fourth horizontal push rod, 803 - Mounting plate, 804 - Lamp cover imitation body, 805 - Second air pump, 806 - One - in - four - out distribution air valve, 807 - Clamping convex plate imitation body, 808 - Arc clamping plate imitation body, 809 - First limiting plate imitation body, 810 - Second limiting plate imitation body, 811 - First branch air pipe, 812 - Second branch air pipe, 813 - Third branch air pipe, 814 - Fourth branch air pipe. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] As Figure 1As shown in the figure, this embodiment provides an automatic airtightness detection device for automotive lamps, which is used to realize the automatic airtightness detection of automotive lamps. The automotive lamp includes a lamp base 1, a lamp cover 2 installed at the front end of the lamp base 1, and multiple functional lamps integrated on the lamp base. A multiple sealing structure 3 is formed between the lamp base 1 and the lamp cover 2. The automatic airtightness detection device includes a horizontal annular guide pair 4, a positioning base 5, a first airtightness detection component 6, a lamp cover disassembly component 7, and a second airtightness detection component 8.

[0022] In this embodiment, multiple sliders are provided in the horizontal annular guide pair 4, and a positioning base 5 is installed on the upper side of each slider. The upper side of the positioning base 5 is provided with a lamp base adsorption surface that matches the shape of the lower side of the lamp base 1, and several lamp base adsorption holes are provided on the lamp base adsorption surface. A lamp base suction cup that can adsorb and lock the lamp base 1 through the lamp base adsorption holes is embedded and installed inside the positioning base 5.

[0023] The working principle of the horizontal annular guide pair 4 is as follows: The circulating conveyor belt located in the inner circle serves as the power part, the guide rail and the slider located in the outer circle serve as the guiding part, and the positioning base 5 located on the slider serves as the loading tray. The adsorption and locking and unlocking of the lamp base 1 are realized by the on-off of the air in the lamp base suction cup.

[0024] In this embodiment, a loading station, a first airtightness detection station, a second airtightness detection station, and a unloading station are arranged along the direction of the horizontal annular guide pair 4. The first airtightness detection component 6 and the lamp cover disassembly component 7 are arranged near the first airtightness detection station, and the second airtightness detection component 8 is arranged near the second airtightness detection station; the first airtightness detection component 6 can perform airtightness detection on the automotive lamp. When the detection is unqualified, first use the lamp cover disassembly component 7 to separate the lamp cover 2 from the lamp base 1, and then use the second airtightness detection component to perform zonal detection on the sealed part at the front end of the lamp base 1.

[0025] As Figure 2 shown, the lamp base 1 includes a lamp base body 101. A rear cover 102 is installed at the rear side of the lamp base body 101. An adjustment hole 103 is opened on the rear cover 102. A turn signal installation hole 104, a lamp inlet hole 105, and a lamp outlet hole 106 are opened at the rear side of the lamp base body 101. A wire harness through hole 107 is opened on the upper side of the lamp base body 101. The designs of the lamp inlet hole 105 and the lamp outlet hole 106 can play a role in balancing the air temperature inside the lamp.

[0026] As Figure 5 shown, the front end of the lamp base 1 is provided with a clamping portion 108. The outer end of the clamping portion 108 is recessed inward to form an annular clamping groove 109. The inner end of the annular clamping groove 109 is connected with an anti-disconnection head 111 through an annular convex plate 110. Anti-disconnection protrusions 112 protrude inward from both side walls of the annular clamping groove 109.

[0027] As Figure 6 shown, a clamping convex plate 201 is provided at the outer edge of the lamp cover 2. An arc-shaped clamping plate 202 capable of being clamped into the area between the anti-disengagement head 111 and the anti-disengagement protrusion 112 is provided at the outer end of the clamping convex plate 201. The radian of the arc-shaped clamping plate 202 is 200-220 degrees. A first limiting plate 203 and a second limiting plate 204 are respectively provided on both sides of the clamping convex plate 201.

[0028] As Figure 4 shown, the multi-sealing structure 3 includes a first outer sealing area 301, a first inner sealing area 302, a second inner sealing area 303 and a second outer sealing area 304. The clamping convex plate 201, the first limiting plate 203, the arc-shaped clamping plate 202 and the clamping portion 108 together enclose the first outer sealing area 301 of the multi-sealing structure 3; the upper part of the arc-shaped clamping plate 202, the clamping portion 108, the annular convex plate 110 and the anti-disengagement head 111 together enclose the first inner sealing area 302 of the multi-sealing structure 3; the lower part of the arc-shaped clamping plate 202, the clamping portion 108, the annular convex plate 110 and the anti-disengagement head 111 together enclose the second inner sealing area 303 of the multi-sealing structure 3; the clamping convex plate 201, the second limiting plate 204, the arc-shaped clamping plate 202 and the clamping portion 108 together enclose the second outer sealing area 304 of the multi-sealing structure 3.

[0029] As Figure 7 shown, the first airtightness detection assembly 6 includes a horizontal linear guide pair 601, a movable frame 602, a first horizontal push rod 603, a first plugging head 604, a second plugging head 605, a third plugging head 606, a second horizontal push rod 607, a fourth plugging head 608, a vertical push rod 609, a first air pump 610, a support plate 611, a plug block 612, a detection air pipe 613 and a first pressure sensor 614. The upper side of the slider of the horizontal linear guide pair 601 is provided with a movable frame 602. One end of the movable frame 602 is provided with a first horizontal push rod 603. The movable end of the first horizontal push rod 603 is provided with a first plugging head 604 that cooperates with the adjustment hole 103, a second plugging head 605 that cooperates with the turn signal installation hole 104, and a third plugging head 606 that cooperates with the lamp inlet hole 105. The other end of the movable frame 602 is provided with a second horizontal push rod 607. The movable end of the second horizontal push rod 607 is provided with a fourth plugging head 608 that cooperates with the lamp outlet hole 106. The middle of the movable frame 602 is provided with a vertical push rod 609 and a first air pump 610. The movable end of the vertical push rod 609 is connected with a plug block 612 that cooperates with the wire harness through hole 107 through a support plate 611. A detection air pipe 613 communicated with the output end of the first air pump 610 and a first pressure sensor 614 for detecting the internal pressure of the lamp are installed in the plug block 612.

[0030] Working principle of the first airtightness detection component 6: When it is necessary to conduct a rough airtightness detection on an automotive lamp at the first airtightness detection station, the horizontal linear guide pair 601 is used to drive the movable frame 602 to perform a linear displacement. The first horizontal push rod 603 and the second horizontal push rod 607 are started, so that the first plugging head 604 enters the adjustment hole 103, the second plugging head 605 enters the turn signal mounting hole 104, the third plugging head 606 enters the lamp air inlet hole 105, and the fourth plugging head 608 enters the lamp air outlet hole 106. The vertical push rod 609 is started, so that the blocking block 612 enters the wire harness perforation 107. At this time, all holes are plugged. Then, the first air pump 610 is started, and in cooperation with the detection air pipe 613 and the first pressure sensor 614, a rough airtightness detection can be carried out on the automotive lamp.

[0031] As Figure 8 shown in the figure, the lamp cover disassembly component 7 includes a first base 701, a third horizontal push rod 702 and a lamp cover suction cup 703. The third horizontal push rod 702 is installed on the first base 701, and the movable end of the third horizontal push rod 702 is installed with the lamp cover suction cup 703. The lamp cover suction cup 703 is provided with a lamp cover adsorption surface that matches the shape of the outer side of the lamp cover 2, and a number of lamp cover adsorption holes are evenly distributed on the lamp cover adsorption surface.

[0032] Working principle of the lamp cover disassembly component 7: When it is necessary to disassemble the lamp cover 2 of an automotive lamp at the first airtightness detection station, the third horizontal push rod 702 is used to drive the lamp cover suction cup 703 to abut against the outside of the lamp cover 2. The lamp cover suction cup 703 is started to adsorb and lock with the lamp cover 2, and then the third horizontal push rod 702 is used to drive the lamp cover suction cup 703 to retract, so that the lamp cover 2 can be separated from the lamp base 1.

[0033] As Figure 9 shown in the figure, the second airtightness detection component 8 includes a second base 801, a fourth horizontal push rod 802, a mounting plate 803, a lamp cover imitation body 804, a second air pump 805 and a one-in-four-out air distribution valve 806. The fourth horizontal push rod 802 is installed on the second base 801, and the movable end of the fourth horizontal push rod 802 is installed with the lamp cover imitation body 804, the second air pump 805 and the one-in-four-out air distribution valve 806 through the mounting plate 803.

[0034] As Figure 10 shown in the figure, the lamp cover imitation body 804 is provided with a clamping convex plate imitation body 807 that matches the shape of the clamping convex plate 201. The outer end of the clamping convex plate imitation body 807 is provided with an arc-shaped clamping plate imitation body 808 that matches the shape of the arc-shaped clamping plate 202. On both sides of the clamping convex plate imitation body 807, there are respectively a first limit plate imitation body 809 that matches the shape of the first limit plate 203 and a second limit plate imitation body 810 that matches the shape of the second limit plate 204.

[0035] The lamp shade imitation body 804 is installed with a first branch air pipe 811 for detecting the air tightness of the first outer seal area 301 at the first limit plate imitation body 809. The lamp shade imitation body 804 is jointly installed with a second branch air pipe 812 for detecting the air tightness of the first inner seal area 302 in the upper parts of the clamping convex plate imitation body 807 and the arc-shaped clamping plate imitation body 808. The lamp shade imitation body 804 is jointly installed with a third branch air pipe 813 for detecting the air tightness of the second inner seal area 303 in the lower parts of the clamping convex plate imitation body 807 and the arc-shaped clamping plate imitation body 808. The lamp shade imitation body 804 is installed with a fourth branch air pipe 814 for detecting the air tightness of the second outer seal area 304 at the second limit plate imitation body 810. Second pressure sensors are installed on the pipelines of the first branch air pipe 811, the second branch air pipe 812, the third branch air pipe 813 and the fourth branch air pipe 814 respectively.

[0036] The working principle of the second air tightness detection component 8: When it is necessary to perform zonal detection on the front-end sealing part of the lamp holder 1 transferred to the second air tightness detection station, the fourth horizontal push rod 802 is used to drive the lamp shade imitation body 804 to be clamped with the front end of the lamp holder 1, the second air pump 805 is started, and the one-in-four-out air distribution valve 806 is adjusted so that the first branch air pipe 811 inflates the first outer seal area 301, and the air tightness of the first outer seal area 301 is detected in cooperation with the corresponding second pressure sensor; the one-in-four-out air distribution valve 806 is adjusted so that the second branch air pipe 812 inflates the first inner seal area 302, and the air tightness of the first inner seal area 302 is detected in cooperation with the corresponding second pressure sensor; the one-in-four-out air distribution valve 806 is adjusted so that the third branch air pipe 813 inflates the second inner seal area 303, and the air tightness of the second inner seal area 303 is detected in cooperation with the corresponding second pressure sensor; the one-in-four-out air distribution valve 806 is adjusted so that the fourth branch air pipe 814 inflates the second outer seal area 304, and the air tightness of the second outer seal area 304 is detected in cooperation with the corresponding second pressure sensor.

[0037] In this embodiment, it further includes a controller, a loading manipulator arranged at the loading station, and an unloading manipulator arranged at the unloading station. The controller is respectively connected to the power components in the horizontal annular guide rail pair 4, the positioning base 5, the loading manipulator, the unloading manipulator, the first air tightness detection component 6, the lamp shade disassembly component 7 and the second air tightness detection component 8.

[0038] This embodiment also provides an automatic air tightness detection method for automotive lamps, including the following steps: S1. Use the loading manipulator to transfer the automotive lamp including the lamp holder 1, the lamp shade 2 installed at the front end of the lamp holder 1, and multiple functional lamps integrated on the lamp holder to the positioning base at the loading station, and use the lamp holder suction cup built in the positioning base 5 to adsorb and lock the lamp holder 1; S2. The horizontal annular guide pair 4 operates to transfer the automotive lamp from the loading station to the first airtightness detection station; the first airtightness detection component 6 can be used to detect the airtightness of the automotive lamp; when the airtightness detection result of the first airtightness detection component is unqualified, the automotive lamp is transferred to the unloading station, and the unloading manipulator is used to transfer the automotive lamp to the finished product unqualified area; S3. When the airtightness detection result of the first airtightness detection component is qualified, the automotive lamp is transferred to the second airtightness detection station, and the second airtightness detection component 8 is used to perform a partition detection on the sealed part at the front end of the lamp base 1; If airtightness defects are found during the partition detection, after the automotive lamp is transferred to the unloading station, the unloading manipulator is used to transfer the automotive lamp to the lamp base unqualified area corresponding to the partition, and the lamp cover 2 is default determined to be a qualified product; If no airtightness defects are found during the partition detection, the lamp cover 2 is determined to be unqualified, and subsequently the lamp base 1 is transferred to the lamp base qualified area.

[0039] The present invention provides an automatic airtightness detection device for automotive lamps, which mainly consists of a horizontal annular guide pair 4, a positioning base 5, a first airtightness detection component 6, a lamp cover disassembly component 7 and a second airtightness detection component 8. For automotive lamps with a multi-layer sealing structure formed by the lamp base 1 and the lamp cover 2, in addition to using the first airtightness detection component 6 to perform overall rough airtightness detection, the lamp cover 2 can also be disassembled by using the lamp cover disassembly component 7, and the second airtightness detection component 8 is used to perform partition detection on the sealed part at the front end of the lamp base 1. In this way, high-standard detection of automotive lamps can be achieved, and the probability of subsequent airtightness defects in automotive lamp products can be greatly reduced. In addition, the present invention can realize automatic batch detection of automotive lamps, with high detection efficiency, meeting the requirements of industrial production of vehicle lamps.

[0040] The preferred embodiments of the present invention disclosed above are only helpful for explaining the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation manners. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An automatic air tightness detection device for automobile lamps, characterized in that: It includes a horizontal annular guide rail pair, a positioning base, a first air tightness detection component, a lampshade disassembly component and a second air tightness detection component; The automobile lamp comprises a lamp holder, a lamp shade installed at the front end of the lamp holder, and a plurality of functional lamps integrated on the lamp holder, wherein a multiple sealing structure is formed between the lamp holder and the lamp shade; A plurality of sliders are arranged in the horizontal annular guide rail pair, and a positioning base is installed on the upper side of each slider, a lamp holder adsorption surface matching the shape of the lower side of the lamp holder is arranged on the upper side of the positioning base, and a plurality of lamp holder adsorption holes are arranged on the lamp holder adsorption surface, and a lamp holder suction cup capable of adsorbing and locking the lamp holder through the lamp holder adsorption hole is embedded and installed inside the positioning base; The horizontal annular guide pair is provided with a loading station, a first air tightness detection station, a second air tightness detection station and an unloading station along its direction; the first air tightness detection component and the lampshade disassembly component are arranged near the first air tightness detection station, and the second air tightness detection component is arranged near the second air tightness detection station; the first air tightness detection component can perform air tightness detection on automobile lamps, and when the detection fails, the lampshade is first separated from the lamp holder by using the lampshade disassembly component, and then the second air tightness detection component is used to perform partition detection on the sealing part of the front end of the lamp holder.

2. The automatic air tightness detection device according to claim 1, characterized in that: The lamp holder comprises a lamp holder body, a rear cover is installed on the rear side of the lamp holder body, an adjustment hole is opened on the rear cover, a turn signal installation hole, a lamp air inlet hole and a lamp air outlet hole are opened on the rear side of the lamp holder body, and a wiring harness through hole is opened on the upper side of the lamp holder body.

3. The automatic air tightness detection device according to claim 2, characterized in that: A clamping portion is provided at the front end of the lamp holder, the outer end of the clamping portion is recessed inward to form an annular clamping groove, the inner end of the annular clamping groove is connected to an anti-slip head via an annular convex plate, and the two side walls of the annular clamping groove protrude inward to form anti-slip protrusions.

4. The automatic air tightness detection device according to claim 3, characterized in that: A snap-fitting convex plate is provided at the outer edge of the lampshade, and an arc-shaped clamping plate capable of being clamped into the area between the anti-slip head and the anti-slip protrusion is provided at the outer end of the snap-fitting convex plate, and a first limiting plate and a second limiting plate are respectively provided on both sides of the snap-fitting convex plate.

5. The automatic air tightness detection device according to claim 4, characterized in that: The multiple sealing structure includes a first outer sealing area, a first inner sealing area, a second inner sealing area and a second outer sealing area; the snap-fitting protrusion, the first limiting plate, the arc-shaped snap-fitting plate and the snap-fitting part together form the first outer sealing area of ​​the multiple sealing structure; the upper part of the arc-shaped snap-fitting plate, the snap-fitting part, the annular protrusion and the anti-slipping head together form the first inner sealing area of ​​the multiple sealing structure; the lower part of the arc-shaped snap-fitting plate, the snap-fitting part, the annular protrusion and the anti-slipping head together form the second inner sealing area of ​​the multiple sealing structure; the snap-fitting protrusion, the second limiting plate, the arc-shaped snap-fitting plate and the snap-fitting part together form the second outer sealing area of ​​the multiple sealing structure.

6. The automatic air tightness detection device according to claim 5, characterized in that: The first air tightness detection component includes a horizontal linear guide pair, a movable frame, a first horizontal push rod, a first plugging head, a second plugging head, a third plugging head, a second horizontal push rod, a fourth plugging head, a vertical push rod, a first air pump, a support plate, a block, a detection air pipe and a first pressure sensor; a movable frame is installed on the upper side of the slider of the horizontal linear guide pair, one end of the movable frame is installed with the first horizontal push rod, the movable end of the first horizontal push rod is installed with the first plugging head matching with the adjustment hole, the second plugging head matching with the turn signal installation hole and the third plugging head matching with the air inlet hole of the lamp, the other end of the movable frame is installed with the second horizontal push rod, and the movable end of the second horizontal push rod is installed with the fourth plugging head matching with the air outlet hole of the lamp; a vertical push rod and a first air pump are installed in the middle of the movable frame, the movable end of the vertical push rod is connected to a block matching with the wiring harness through the support plate, and the block is installed with a detection air pipe connected to the output end of the first air pump and a first pressure sensor for detecting the internal pressure of the lamp.

7. The automatic air tightness detection device according to claim 6, characterized in that: The lampshade disassembly assembly includes a first base, a third horizontal push rod and a lampshade suction cup. The first base is equipped with a third horizontal push rod, and a lampshade suction cup is installed at the movable end of the third horizontal push rod. The lampshade suction cup is provided with a lampshade adsorption surface that matches the shape of the outer side surface of the lampshade, and a plurality of lampshade adsorption holes are evenly distributed on the lampshade adsorption surface.

8. The automatic air tightness detection device according to claim 7, characterized in that: The second air tightness detection assembly comprises a second base, a fourth horizontal push rod, a mounting plate, a lampshade imitation body, a second air pump and a one-inlet and four-outlet distribution air valve, the second base is mounted with a fourth horizontal push rod, and the movable end of the fourth horizontal push rod is mounted with a lampshade imitation body, a second air pump and a one-inlet and four-outlet distribution air valve via the mounting plate; The lampshade imitation body is provided with a clamping convex plate imitation matching the shape of the clamping convex plate, the outer end of the clamping convex plate imitation is provided with an arc-shaped clamping plate imitation matching the shape of the arc-shaped clamping plate, and the two sides of the clamping convex plate imitation are respectively provided with a first limiting plate imitation matching the shape of the first limiting plate and a second limiting plate imitation matching the shape of the second limiting plate; The lampshade replica is located at the first limiting plate replica and is equipped with a first branch air pipe for detecting the air tightness of the first outer sealing area; the lampshade replica is located in the upper part of the clamping convex plate replica and the arc-shaped clamping plate replica and is jointly equipped with a second branch air pipe for detecting the air tightness of the first inner sealing area; the lampshade replica is located in the lower part of the clamping convex plate replica and the arc-shaped clamping plate replica and is jointly equipped with a third branch air pipe for detecting the air tightness of the second inner sealing area; the lampshade replica is located at the second limiting plate replica and is equipped with a fourth branch air pipe for detecting the air tightness of the second outer sealing area; second pressure sensors are installed on the pipelines of the first branch air pipe, the second branch air pipe, the third branch air pipe and the fourth branch air pipe respectively.

9. The automatic air tightness detection device according to claim 8, characterized in that: It also includes a controller, a loading robot arranged at the loading station and a unloading robot arranged at the unloading station. The controller is respectively connected to the horizontal annular guide rail pair, the positioning base, the loading robot, the unloading robot, the first air tightness detection component, the lampshade removal component and the electrical components in the second air tightness detection component.

10. An automatic air tightness detection method for automobile lamps, implemented based on the automatic air tightness detection device according to claim 9, characterized in that: The steps include: S1. Use a loading robot to transfer the automotive lamp including a lamp holder, a lampshade installed at the front end of the lamp holder, and multiple functional lamps integrated on the lamp holder to a positioning base at the loading station, and use a lamp holder suction cup built into the positioning base to absorb and lock the lamp holder; S2, the horizontal annular guide rail is operated to transfer the automobile lamp from the loading station to the first air tightness detection station; the automobile lamp can be tested for air tightness by using the first air tightness detection component; when the air tightness detection result of the first air tightness detection component is unqualified, the automobile lamp is transferred to the unloading station, and the unloading manipulator is used to transfer the automobile lamp to the unqualified finished product area; S3. When the airtightness test result of the first airtightness test component is qualified, the automobile lamp is transferred to the second airtightness test station, and the sealing part of the front end of the lamp holder is tested by the second airtightness test component in a partitioned manner; If poor airtightness is found in the partition test, after the automobile lamp is transferred to the unloading station, the unloading robot will be used to transfer the automobile lamp to the unqualified lamp holder area of ​​the corresponding partition, and the lampshade will be judged as qualified by default; If the partition test does not find poor airtightness, the lampshade is judged as unqualified and the lamp holder is subsequently transferred to the qualified lamp holder area.

Images