Automatic production system for automobile LED high-mount stop lamp and manufacturing method of automobile LED high-mount stop lamp

Abstract

The invention relates to the technical field of automobile part manufacturing, in particular to an automobile LED high-mount stop lamp automatic production system and a manufacturing method thereof.The automobile LED high-mount stop lamp automatic production system comprises a conveying line; the friction welding unit is used for assembling a lamp shell and a lampshade of the high-mount stop lamp through vibration welding, the tempering heating unit is used for conducting heat treatment on the welded high-mount stop lamp, the detection unit is used for detecting the sealing performance and the light source brightness of the heat-treated high-mount stop lamp, and a plurality of assembly stations are arranged on the assembly unit; the friction welding unit is provided with a plurality of welding stations; the tempering heating unit is provided with a temperature control system, and the detection unit is provided with a plurality of detection stations. According to the invention, the problems of glue overflow, burr residue, long welding time and the like during gluing or ultrasonic welding in the prior art are solved, so that rapid assembly and high-quality production of the LED brake lamp are realized.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts manufacturing, in particular to an automatic production system for an automobile LED high-mounted brake light and a manufacturing method thereof. Background Art

[0002] LED high-mounted brake lights are generally composed of an outer shell and an internal LED lamp and some other electronic devices. Among them, the outer shell of the LED high-mounted brake light usually adopts a lampshade and a lamp shell that are separated in half and assembled together to form a well-sealed outer shell. Among them, the LED high-mounted brake light is an important auxiliary equipment for vehicle safe driving, and its quality is directly related to the life safety of the driver and other road users. In the production process of LED brake lights, how to ensure the precise assembly, welding firmness and airtightness of each component is the key factor that determines the final performance of the product. However, for a long time, subject to technical conditions and cost considerations, most manufacturers still use manual or semi-automatic methods for production, which have problems such as low work efficiency, high defective rate, and long production cycle, which seriously restricts the rapid development of the industry.

[0003] The existing brake lights are usually welded by gluing or ultrasonic welding. Although both methods have their own advantages and disadvantages, neither can perfectly solve the problem. Gluing can easily cause the colloid to overflow, affecting the appearance and reliability; ultrasonic welding may leave obvious marks, and the welding time is long, which is not conducive to mass production.

[0004] Therefore, developing an automated production line for LED high-mounted brake lights that integrates assembly, welding, heat treatment, and testing is of great significance for improving production efficiency, reducing costs, and improving product quality. Summary of the invention

[0005] In order to solve the technical defects raised in the above-mentioned background technology, the purpose of the present invention is to provide an automatic production system and a manufacturing method of an automotive LED high-mounted brake light, aiming to solve the problems of colloid overflow, burr residue, long welding time, etc. in the prior art during gluing or ultrasonic welding, thereby realizing the rapid assembly and high-quality production of LED brake lights.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: An automatic production system for an automotive LED high-mounted brake light comprises a conveyor line, wherein an assembly unit for assembling an LED light strip is sequentially arranged along the conveying direction of the conveyor line, a friction welding unit for assembling a lamp housing and a lampshade of a high-mounted brake light by vibration welding, a tempering and heating unit for heat-treating the welded high-mounted brake light, and a detection unit for detecting the sealing performance and light source brightness of the high-mounted brake light after the heat treatment, wherein the friction welding unit comprises a chassis, an upper mold part arranged in the chassis for clamping and fixing the lampshade of the high-mounted brake light, and a lower mold part for fixing and limiting the lamp housing of the high-mounted brake light, wherein a lifting mechanism is transmission-connected between the upper mold part and the lower mold part, and a guiding mechanism is cooperatively connected between the upper mold part and the lower mold part; a vibration transmission mechanism is also connected to the top of the upper mold part, and the vibration transmission mechanism is cooperatively connected to the lifting mechanism; the lifting mechanism drives the upper mold part and the lower mold part to close the mold, and the lampshade and the lamp housing of the high-mounted brake light are welded through the vibration transmission mechanism.

[0007] Preferably, the upper mold part includes an upper mold plate, an upper mold base and a lampshade positioning piece, both sides of the upper mold plate are respectively transmission connected to the lifting mechanism, and the top of the upper mold plate is transmission connected to the vibration transmission mechanism, one side of the upper mold base is fixedly connected to the upper mold plate, and the other side is connected to the lampshade positioning piece; the lampshade positioning piece encloses a first model cavity suitable for installing a high-mounted brake light lampshade.

[0008] Preferably, the lower mold part includes a lower template, a lower mold base and a lamp housing positioning piece, the lower template is fixed on the chassis, and the lower template is provided with an auxiliary positioning adjustment piece around the bottom edge of the lower mold base, the auxiliary positioning adjustment piece abuts against the lower mold base, one side of the lower mold base is movably connected to the lower template, and the other side is connected to the lamp housing positioning piece; the lamp housing positioning piece encloses a second model cavity suitable for installing a high-mounted brake light lamp housing.

[0009] Preferably, the guide mechanism includes a guide rod and a guide seat, and the guide rod and the guide seat are respectively arranged at the four corners of the lower template and the upper template. The guide seat is provided with a guide hole adapted for the guide rod, and the guide rod is inserted into the guide hole.

[0010] Preferably, the lifting mechanism includes a lifting rod, a lifting plate and a driving motor, the bottom end of the lifting rod is connected to the lower template, and the top end of the lifting rod is connected to the top end of the chassis; the lifting plate is sleeved on the lifting rod, and one side of the lifting plate is fixedly connected to the upper template; the output end of the driving motor is respectively connected to the lifting rod and the vibration transmission mechanism by setting a worm gear.

[0011] Preferably, the assembly unit includes a workbench, a positioning fixture arranged on the workbench for clamping and fixing the lamp housing, and an assembly mechanism for fixing the LED light strip, a clamping space for accommodating the lamp housing is arranged between the positioning fixtures, and a limit piece is also provided in the middle of the positioning fixture, and the limit piece is used to abut the bottom end of the lamp housing; the assembly mechanism includes a multi-axis transmission assembly and a screw fixer, the screw fixer is arranged directly above the tooling fixture, and the screw fixer is movably connected to the multi-axis transmission assembly; the multi-axis transmission assembly is installed on the workbench, and a visual detector is also provided on one side of the multi-axis transmission assembly at a position corresponding to the clamping space.

[0012] Preferably, the tempering and heating unit includes an annealing furnace and a track conveyor line. The annealing furnace is configured as a front and rear double-door structure. Both ends of the track conveyor line pass through the annealing furnace and are connected to the conveyor line. A tray for carrying a high-mounted brake light is provided on the track conveyor line.

[0013] Preferably, the detection unit includes an airtightness detector and a luminous flux detection device, the airtightness detector is arranged on one side of the luminous flux detection device, and the airtightness detector and the luminous flux detection device are externally connected with a controller; the luminous flux detection device includes a mounting bracket, a fixing seat arranged on the mounting bracket, and a lifting drive assembly connected to the top of the mounting bracket, the fixing seat is used to install and fix the brake light, and a power connector is arranged in the fixing seat; the power connector is connected to the brake light source; the mounting bracket is vertically arranged on both sides of the fixing seat, and the mounting bracket and the fixing seat are transmission connected through the lifting drive assembly.

[0014] A method for manufacturing an automotive LED high-mount brake light comprises the following steps: S1. Fixture positioning: Place the high-mounted brake light housing in the positioning fixture, and adjust the distance of the positioning fixture according to the size of the lamp housing to ensure that the lamp housing is installed in the correct position; S2, LED light strip assembly: Use the visual positioning system to automatically identify the position of the built-in circuit board of the lamp housing, and accurately install the LED light strip in the lamp housing through the screw fixer, and connect the LED light strip to the circuit board; S3, vibration friction welding: put the lampshade and lamp shell into the friction welding unit, start the equipment, generate heat through high-frequency vibration, so that the joint between the lampshade and the lamp shell is melted and connected; S4, tempering treatment: send the welded high-mounted brake light into the annealing furnace for heating, and perform heat treatment according to the preset heating time and holding time to improve the mechanical properties of the high-mounted brake light; S5. Performance test: Take out the high-mounted brake lights, use an airtightness tester and a luminous flux tester to check the sealing condition and light brightness of the high-mounted brake lights, and remove unqualified products; S6. Packaging and warehousing: After the high-mounted brake light inspection is completed, the surface is cleaned and the appearance is inspected. After passing the inspection, the product can be put into storage or shipped.

[0015] Preferably, in step S4, the heating temperature of the annealing furnace is 150° C., the holding time is 2 hours, and then the annealing furnace is placed in a room temperature environment for natural cooling.

[0016] In summary, the beneficial effects of the present invention are: 1. The automatic production system of the automotive LED high-mounted brake light of the present invention is provided with a friction welding unit, and uses the upper mold part and the lower mold part to fix the lampshade and the lamp shell respectively, and realizes vibration friction welding of the lamp shell and the wind cover through the cooperation of the vibration transmission mechanism and the lifting mechanism; and uses the guide mechanism to complete the precise mold closing of the upper mold part and the lower mold part, so that the lamp shell and the lampshade are welded to each other, effectively avoiding the disadvantages of colloid overflow, burr generation and long welding time, thereby significantly improving the production efficiency and quality level of the high-mounted brake light.

[0017] 2. In the manufacturing method of the automotive LED high-mounted brake light of the present invention, during the process of assembling the high-mounted brake light, the light strip and other components inside the high-mounted brake light are first fixedly assembled on the lamp housing, and then the lampshade and the lamp housing are welded by vibration friction, so that the lampshade and the lamp housing are fused to form an integrated structure, which effectively plays a role of dustproof and waterproof, and the high-mounted brake light after welding is heat treated. The high-temperature heat treatment enables the high-mounted brake light after vibration friction welding to further improve its sealing and stability, thereby extending the service life of the brake light. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the automatic production system of the automotive LED high-mounted brake light of the present invention; Figure 2 It is a top view of the automatic production system of the automotive LED high-mounted brake light of the present invention; Figure 3 It is a structural schematic diagram of the assembly unit in the present invention; Figure 4 It is a structural schematic diagram of the friction welding unit in the present invention; Figure 5 It is a schematic diagram of the structure of the tempering and heating unit in the present invention; Figure 6 It is a structural schematic diagram of the detection unit in the present invention; Figure 7 The present invention is a flow chart of a method for manufacturing an automotive LED high-mount brake light.

[0019] 1. Conveyor line; 2. Assembly unit; 21. Workbench; 22. Positioning fixture; 23. Assembly mechanism; 231. Multi-axis transmission assembly; 232. Screw fixer; 24. Stopper; 25. Visual detector; 3. Friction welding unit; 31. Chassis; 32. Upper die part; 321. Upper die plate; 322. Upper die seat; 323. Lamp cover positioning piece; 33. Lower die part; 331. Lower die plate; 332. Lower die seat; 333. Lamp housing positioning piece; 34. Lifting mechanism; 341. Lifting rod; 342. Lifting rod Drop plate; 343, drive motor; 35, guide mechanism; 351, guide rod; 352, guide seat; 36, vibration transmission mechanism; 37, auxiliary positioning adjustment member; 4, tempering and heating unit; 41, annealing furnace; 42, track conveyor line; 5, detection unit; 51, air tightness detector; 52, luminous flux detection device; 521, mounting bracket; 522, fixing seat; 523, lifting drive assembly; 5231, lifting cylinder; 5232, guide column; 6, assembly station; 7, welding station; 8, detection station. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0022] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the description of the present invention, if there are words such as "several", it means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there are descriptions of first, second, and third, they are only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0024] The following is combined with Figure 1-7 , an embodiment of an automatic production system and a manufacturing method of an automotive LED high-mount brake light of the present invention is further described in detail.

[0025] An automatic production system for automotive LED high-mounted brake lights, such as Figure 1 , 2 As shown, it includes a conveyor line 1, on which an assembly unit 2 for assembling LED light strips, a friction welding unit 3 for assembling a lamp housing and a lampshade by vibration welding, a tempering and heating unit 4 for heat treating the high-mounted brake light after welding, and a detection unit 5 for detecting the sealing performance and light source brightness of the high-mounted brake light after heat treatment are sequentially arranged along the conveying direction thereof, wherein the assembly unit 2 is provided with a plurality of assembly stations 6; the friction welding unit 3 is provided with a plurality of welding stations 7; the tempering and heating unit 4 is provided with a temperature control system, and the detection unit 5 is provided with a plurality of detection stations 8; the brake light is transmitted to the above-mentioned units through the conveyor line 1, so as to automatically control the high-mounted brake light to complete the assembly, welding, heat treatment and detection processes.

[0026] Specifically, in the process of assembling and producing automotive LED high-mounted brake lights, semi-finished lamp shells, lampshades, LED light strips, etc. are first assembled, and the required lamp shells, LED light strips, lampshades and other parts are conveyed to the assembly unit 2 by using the conveyor line 1, and the various parts are assembled in the lamp shell by equipping the assembly station 6 with corresponding operators, and then the assembled high-mounted brake lights are transmitted along the conveyor line 1 to the friction welding unit 3 for welding and suturing, and the heat energy generated by the relative friction movement between the lampshade and the lamp shell is generated by the principle of vibration friction, so that the lamp shell and the lampshade are melted into one under a certain pressure; the welded high-mounted brake lights are continuously conveyed along the conveyor line 1 to the tempering and heating unit 4, and the high-mounted brake lights after heat treatment can further improve their performance stability, and then the high-mounted brake lights will be put into actual use after passing the detection of various values ​​and being qualified.

[0027] In this embodiment, if Figure 3As shown, the assembly unit 2 includes a workbench 21, a positioning fixture 22 for clamping and fixing the lamp housing, and an assembly mechanism 23 for fixing the LED light strip. A clamping space for accommodating the lamp housing is provided between the positioning fixtures 22, and a stopper 24 is provided in the middle of the positioning fixture 22. The stopper 24 is used to abut the bottom end of the lamp housing. The assembly mechanism 23 includes a multi-axis transmission assembly 231 and a screw fixer 232. The screw fixer 232 is provided above the positioning fixture 22, and the screw fixer 232 is movably connected to the multi-axis transmission assembly 231. The multi-axis transmission assembly 231 is installed on the workbench 21, and a visual detector 25 is provided on one side of the multi-axis transmission assembly 231 at a position corresponding to the clamping space. Among them, the multi-axis transmission assembly 231 uses linear rails set in different directions for transmission, so that the screw fixer 232 can move in the up, down, left, right, front and back directions under the transmission of the multi-axis transmission assembly 231, and tighten and fix the screws on the light strip.

[0028] Specifically, when assembling the high-mounted brake light, the operator only needs to place the lamp housing of the high-mounted brake light in the clamping space, clamp and position it with the positioning fixture 22, and cooperate with the limiter 24 at the bottom to limit the position of the lamp housing, so as to accurately fix the housings of different sizes and ensure assembly accuracy. At the same time, the LED light strip is bonded to the specified position in the lamp housing, and the installation of the LED light strip is further reinforced with the screw fastener 232. When assembling internal parts, in order to further improve the accuracy of assembly, the visual detector 25 is used to perform visual inspection on the assembled parts and the assembly position, so that it can automatically identify the position of the built-in circuit board of the lamp housing, accurately install the LED light strip and connect it with it; thereby improving the assembly efficiency and accuracy of the high-mounted brake light.

[0029] In this embodiment, if Figure 4 As shown, the friction welding unit 3 includes a chassis 31, an upper mold part 32 arranged in the chassis 31 for clamping and fixing the high-mounted brake light shade, and a lower mold part 33 for fixing and limiting the high-mounted brake light housing, a lifting mechanism 34 is transmission-connected between the upper mold part 32 and the lower mold part 33, and a guide mechanism 35 is cooperatively connected between the upper mold part 32 and the lower mold part 33, and a vibration transmission mechanism 36 is also connected to the top of the upper mold part 32, and the vibration transmission mechanism 36 is cooperatively connected with the lifting mechanism 34, and the lifting mechanism 34 drives the upper mold part 32 and the lower mold part 33 to close the mold, and the lampshade and the lamp housing of the high-mounted brake light are welded through the vibration transmission mechanism 36.

[0030] The upper mold part 32 includes an upper mold plate 321, an upper mold base 322 and a lampshade positioning piece 323. The two sides of the upper mold plate 321 are respectively connected to the lifting mechanism 34, and the top of the upper mold plate 321 is connected to the vibration transmission mechanism 36. One side of the upper mold base 322 is fixedly connected to the upper mold plate 321, and the other side is connected to the lampshade positioning piece 323. The lampshade positioning piece 323 encloses a first mold cavity suitable for installing a high-mounted brake light lampshade. The lower mold part 33 includes a lower mold base 322, a lower mold base 322, and a lower mold base 323. The lower mold base 332 and the lamp housing positioning piece 333 are provided with a template 331, a lower mold base 332 and a lamp housing positioning piece 333. The lower mold base 331 is fixed on the chassis 31, and the lower mold base 331 is provided with an auxiliary positioning adjustment piece 37 around the bottom edge of the lower mold base 332, and the auxiliary positioning adjustment piece 37 is abutted against the lower mold base 332; one side of the lower mold base 332 is movably connected to the lower mold base 331, and the other side is connected to the lamp housing positioning piece 333; the lamp housing positioning piece 333 encloses a second model cavity suitable for installing the lamp housing of the high-mounted brake light.

[0031] Specifically, the principle of vibration friction welding is to make the two interface workpieces to be welded contact with each other under the action of friction force, and rely on the heat energy generated by the relative friction movement between the two parts to be welded to melt the parts to be welded and weld them into one under a certain pressure. The present invention uses the principle of high-speed vibration friction to tightly combine the lamp housing and the lamp shade to form a stable and reliable welding interface, avoiding the defects of traditional welding methods; in the process of vibration friction, the first model cavity and the second model cavity are used to assemble the lamp shade and the lamp housing respectively; and in order to adapt to the structure of the lamp shade and the lamp housing, the first model cavity and the second model cavity are limited and fixed by setting a lamp shade positioning member 323 and a lamp housing positioning member 333 to prevent them from shifting during the vibration friction welding process, resulting in poor welding effect. The upper mold part 32 is driven down by the lifting mechanism 34 until the upper mold part 32 and the lower mold part 33 are closed. At this time, the lampshade and the lamp housing are squeezed and rubbed. At the same time, the vibration force generated by the vibration transmission mechanism 36 acts on the upper mold part 32, so that the contact end of the lampshade and the lamp housing are melted together in the high-speed vibration friction, so that they can be perfectly connected, effectively avoiding glue leakage and unstable connection.

[0032] It is worth mentioning that, compared with the bottom mold in the traditional vibration friction welding professional mold, which is mostly fixed on the top of the lower mold plate 331, so that the mold can only be suitable for automobile parts of a single specification, the lower mold base 332 in the present invention is movably connected to the lower mold plate 331 through an auxiliary positioning adjustment member 37, so that the lower mold base 332 and the second model cavity can be replaced according to actual production needs, wherein the auxiliary positioning adjustment member 37 includes a threaded fixing block, a threaded adjustment rod and a mounting seat, and the mounting seat is provided with a positioning hole corresponding to the position of the threaded adjustment rod, one end of the threaded adjustment rod is inserted into the positioning hole, and the other end is threadedly connected to the threaded positioning block, and the threaded positioning block abuts against the side wall of the lower mold base 332, so that the lower mold base 332 does not need to be fixed to the lower mold plate 331, and is fixed by clamping the threaded positioning blocks in multiple different directions, so that the lower mold base 332 can be replaced with lower mold bases 332 of different sizes for automobile parts of different models, so that the lower mold base 332 can be disassembled and replaced with a matching lower mold part 33 according to the actual product specifications, which greatly improves the application range of the lower mold base 332.

[0033] In this embodiment, the guide mechanism 35 includes a guide rod 351 and a guide seat 352. The guide rod 351 and the guide seat 352 are respectively arranged at the four corners of the lower template 331 and the upper template 321. A guide hole adapted to the guide rod 351 is opened on the guide seat 352, and the guide rod 351 is inserted into the guide hole.

[0034] Specifically, the guide mechanism 35 is used to improve the positioning accuracy of the mold. The guide rod 351 and the guide seat 352 are provided to achieve a buffering effect when the mold is docked. When the lower mold part 33 and the upper mold part 32 are closed and docked, the upper mold plate 321 is often driven by hydraulic pressure to move in the direction of the lower mold plate 331. When the upper mold plate 321 is lowered to about to contact the lower mold plate 331, the buffer rubber pad provided on the guide seat 352 gradually contacts the top of the guide rod 351, so that the buffer rubber pad is gradually deformed by pressure and generates a reverse elastic force, so that the upper mold plate 321 moves open The upper mold part 321 is forced to move upward, and the guide rod 351 will slide inside the guide seat 352. During the sliding process of the guide rod 351, the guide rod 351 will drive the ball closely arranged inside the guide rod 351 to roll. During the rolling process of the ball, the friction between the sliding of the guide rod 351 and the ball is reduced, thereby reducing the wear caused by friction when the guide rod 351 slides inside the guide seat 352.

[0035] In this embodiment, the lifting mechanism 34 includes a lifting rod 341, a lifting plate 342 and a driving motor 343. The bottom end of the lifting rod 341 is connected to the lower template 331, and the top end of the lifting rod 341 is connected to the top of the chassis 31; the lifting plate 342 is sleeved on the lifting rod 341, and one side of the lifting plate 342 is fixedly connected to the upper template 321. The output end of the driving motor 343 is respectively connected to the lifting rod 341 and the vibration transmission mechanism 36 through the arrangement of a worm gear.

[0036] Specifically, when the lifting mechanism 34 drives the upper mold part 32 and the lower mold part 33 to close the mold, the lifting plate 342 is driven to slide up and down along the lifting rod 341 through the driving motor 343, and the vibration transmission mechanism 36 is driven to vibrate and rotate through the transmission of the worm gear, so that the upper mold part 32 and the lower mold part 33 are vibrated and rubbed synchronously when the mold is closed, so that the lamp shell and the lampshade begin to melt under high-speed vibration friction, thereby accelerating the welding efficiency and effectively improving the docking accuracy of the upper mold part 32 and the lower mold part 33.

[0037] In this embodiment, if Figure 5 As shown, the tempering and heating unit 4 includes an annealing furnace 41 and a track conveyor line 42. The annealing furnace 41 is configured as a front and rear double-door structure. Both ends of the track conveyor line 42 pass through the annealing furnace 41 and are connected to the conveyor line 1; and a tray for carrying a high-mounted brake light is provided on the track conveyor line 42.

[0038] Specifically, the tempering heating unit 4 is equipped with a temperature control system, which can accurately control the heating temperature and the holding time, ensure that the microstructure of the welding part is improved, and enhance the toughness of the material. At the same time, when the high-mounted brake lights after welding are heat treated, by placing the high-mounted brake lights uniformly on a tray and conveying them to the annealing furnace 41 by the track conveyor line 42, the welded parts of the high-mounted brake lights can be further softened and fused when they are heated, and the firmness of the welded parts can be improved after cooling.

[0039] In this embodiment, if Figure 6As shown, the detection unit 5 includes an airtightness detector 51 and a luminous flux detection device 52. The airtightness detector 51 is arranged on one side of the luminous flux detection device 52. The luminous flux detection device 52 includes a mounting bracket 521, a fixing seat 522 arranged on the mounting bracket 521, and a lifting drive assembly 523 connected to the top of the mounting bracket 521. The fixing seat 522 is used to install the fixed brake light, and a power connector is arranged in the fixing seat 522, and the power connector is connected to the light source of the high-mounted brake light; the mounting bracket 521 is vertically arranged on both sides of the fixing seat 522, and the mounting bracket 521 and the fixing seat 522 are connected by the lifting drive assembly 523. Among them, the airtightness detector 51 adopts the pressure decay method or the helium mass spectrometry leakage detection technology to comprehensively evaluate the overall sealing performance of the high-mounted brake light to ensure that the waterproof and dustproof level meets the standard.

[0040] Specifically, the lifting drive assembly 523 includes a lifting cylinder 5231 and a guide column 5232. The guide column 5232 extends through the mounting bracket 521 to the fixed seat 522. One end of the lifting cylinder 5231 is fixedly connected to the mounting bracket 521, and the output end of the lifting cylinder 5231 is connected to the fixed seat 522. Under the driving action of the lifting cylinder 5231, the guide column 5232 can drive the fixed seat 522 to rise and fall, and at the same time, the high-mounted brake light can be synchronously lifted and lowered, so as to detect whether there is light leakage in the high-mounted brake light in a circumferential direction, and observe the luminous flux and intensity of the high-mounted brake light, so as to detect whether the high-mounted brake light is qualified.

[0041] A method for manufacturing an automotive LED high-mount brake light, such as Figure 7 As shown, the following steps are included: S1. Fixture positioning: Place the high-mounted brake lamp housing in the positioning fixture 22, and adjust the clamping distance of the positioning fixture 22 according to the size of the lamp housing to ensure that the lamp housing is installed in an accurate position; S2, LED light strip assembly: Use the visual positioning system to automatically identify the position of the built-in circuit board of the lamp housing, and accurately install the LED light strip in the lamp housing through the screw fixer 232, and connect the LED light strip to the circuit board; S3, vibration friction welding: put the lampshade and the lamp housing into the friction welding unit 3, start the equipment, generate heat through high-frequency vibration, so that the joint between the lampshade and the lamp housing is melted and connected; S4, tempering treatment: sending the welded high-mounted brake lamp into the annealing furnace 41, and performing heat treatment according to the preset heating time and heat preservation time to improve the mechanical properties of the high-mounted brake lamp; S5, performance test: take out the high-mounted brake light, use the airtightness tester 51 and the light flux tester 52 to check the sealing condition and light brightness of the brake light, and remove unqualified products; S6. Packaging and warehousing: After the high-mounted brake lights are assembled, the surface is cleaned and the appearance is inspected. After passing the inspection, they are put into storage or shipped.

[0042] Specifically, the heating temperature of the annealing furnace 41 is 150° C., the heat preservation time is 2 hours, and then it is placed in a room temperature environment for natural cooling. At this temperature, the welded part of the high-mounted brake light can be further softened and fused, so that the splicing gap between them is filled, so that after cooling, the lampshade and the lamp body form an integrated structure, which effectively improves the waterproof and dustproof effect of the high-mounted brake light, while improving the firmness of the high-mounted brake light, and further improves the aesthetics of the high-mounted brake light.

[0043] The automatic production system of the automobile LED high-mounted brake light of the present invention is provided with a friction welding unit 3, and the upper mold base 322 and the lower mold base 332 are adapted to the lampshade and the lamp shell. During the welding process, the upper mold base 322 and the lower mold base 332 are vibrated and rubbed, so that the lamp shell and the lampshade are fused to each other, effectively avoiding the drawbacks of colloid overflow, burr generation and long welding time, thereby significantly improving the production efficiency and quality level of the high-mounted brake light; at the same time, in the manufacturing method of the automobile LED high-mounted brake light of the present invention, during the process of assembling the high-mounted brake light, the light strip and other components inside the high-mounted brake light are first fixedly assembled on the lamp shell, and then the lampshade and the lamp shell are welded by vibration and friction, so that the lampshade and the lamp shell are fused to form an integrated structure, which effectively plays a role of dustproof and waterproof, and the welded high-mounted brake light is heat treated. The high-temperature heat treatment enables the high-mounted brake light after vibration and friction welding to further improve its sealing and stability, thereby extending the service life of the brake light.

[0044] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic production system for automotive LED high-mounted brake lights, comprising a conveyor line, wherein the conveyor line is provided with an assembly unit for assembling LED light strips, a friction welding unit for assembling a high-mounted brake light housing and a lampshade by vibration welding, a tempering heating unit for heat-treating the welded high-mounted brake lights, and a detection unit for detecting the sealing performance and light source brightness of the high-mounted brake lights after heat treatment, characterized in that: The friction welding unit includes a chassis, an upper mold part arranged in the chassis for clamping and fixing the high-mounted brake light shade, and a lower mold part for fixing the limited high-mounted brake light housing, a lifting mechanism is transmission-connected between the upper mold part and the lower mold part, and a guiding mechanism is cooperatively connected between the upper mold part and the lower mold part; the top of the upper mold part is also connected to a vibration transmission mechanism, and the vibration transmission mechanism is cooperatively connected to the lifting mechanism; the lifting mechanism drives the upper mold part and the lower mold part to close the mold, and the lampshade and the lamp housing of the high-mounted brake light are welded through the vibration transmission mechanism.

2. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The upper mold part includes an upper mold plate, an upper mold base and a lampshade positioning piece. The two sides of the upper mold plate are respectively connected to the lifting mechanism, and the top of the upper mold plate is connected to the vibration transmission mechanism. One side of the upper mold base is fixedly connected to the upper mold plate, and the other side is connected to the lampshade positioning piece; the lampshade positioning piece encloses a first mold cavity suitable for installing a high-mounted brake light lampshade.

3. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The lower mold part includes a lower mold plate, a lower mold base and a lamp housing positioning piece. The lower mold plate is fixed on the chassis, and an auxiliary positioning adjustment piece is provided on the bottom edge of the lower mold base surrounding the lower mold base. The auxiliary positioning adjustment piece is abutted against the lower mold base. One side of the lower mold base is movably connected to the lower mold plate, and the other side is connected to the lamp housing positioning piece. The lamp housing positioning piece encloses a second model cavity suitable for installing a high-mounted brake light lamp housing.

4. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The guide mechanism includes a guide rod and a guide seat. The guide rod and the guide seat are respectively arranged at the four corners of the lower template and the upper template. The guide seat is provided with a guide hole adapted to the guide rod, and the guide rod is inserted into the guide hole.

5. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The lifting mechanism includes a lifting rod, a lifting plate and a driving motor. The bottom end of the lifting rod is connected to the lower template, and the top end of the lifting rod is connected to the top end of the chassis. The lifting plate is sleeved on the lifting rod, and one side of the lifting plate is fixedly connected to the upper template. The output end of the driving motor is respectively connected to the lifting rod and the vibration transmission mechanism through the arrangement of a worm gear.

6. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The assembly unit includes a workbench, a positioning fixture arranged on the workbench for clamping and fixing the lamp housing, and an assembly mechanism for fixing the LED light strip, a clamping space for accommodating the lamp housing is arranged between the positioning fixtures, and a limit piece is also arranged in the middle of the positioning fixture, and the limit piece is used to abut the bottom end of the lamp housing; the assembly mechanism includes a multi-axis transmission assembly and a screw fixer, the screw fixer is arranged directly above the tooling fixture, and the screw fixer is movably connected to the multi-axis transmission assembly; the multi-axis transmission assembly is installed on the workbench, and a visual detector is also arranged on one side of the multi-axis transmission assembly at a position corresponding to the clamping space.

7. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The tempering and heating unit includes an annealing furnace and a track conveyor line. The annealing furnace is configured as a front and rear double-door structure. Both ends of the track conveyor line pass through the annealing furnace and are connected to the conveyor line. A tray for carrying a high-mounted brake light is provided on the track conveyor line.

8. The automatic production system of automotive LED high-mounted brake lights according to claim 1 is characterized in that: The detection unit includes an airtightness detector and a luminous flux detection device, the airtightness detector is arranged on one side of the luminous flux detection device, and the airtightness detector and the luminous flux detection device are externally connected with a controller; the luminous flux detection device includes a mounting bracket, a fixing seat arranged on the mounting bracket, and a lifting drive assembly connected to the top of the mounting bracket, the fixing seat is used to install and fix the brake light, and a power connector is arranged in the fixing seat; the power connector is connected to the brake light source; the mounting bracket is vertically arranged on both sides of the fixing seat, and the mounting bracket and the fixing seat are transmission connected through the lifting drive assembly.

9. A manufacturing method based on the automatic production system of automotive LED high-mounted brake lights according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Fixture positioning: Place the high-mounted brake light housing in the positioning fixture, and adjust the distance of the positioning fixture according to the size of the lamp housing to ensure that the lamp housing is installed in the correct position; S2, LED light strip assembly: Use the visual positioning system to automatically identify the position of the built-in circuit board of the lamp housing, and accurately install the LED light strip in the lamp housing through the screw fixer, and connect the LED light strip to the circuit board; S3, vibration friction welding: put the lampshade and lamp shell into the friction welding unit, start the equipment, generate heat through high-frequency vibration, so that the joint between the lampshade and the lamp shell is melted and connected; S4, tempering treatment: send the welded high-mounted brake light into the annealing furnace for heating, and perform heat treatment according to the preset heating time and holding time to improve the mechanical properties of the high-mounted brake light; S5. Performance test: Take out the high-mounted brake lights, use an airtightness tester and a luminous flux tester to check the sealing condition and light brightness of the high-mounted brake lights, and remove unqualified products; S6. Packaging and warehousing: After the high-mounted brake light inspection is completed, the surface is cleaned and the appearance is inspected. After passing the inspection, the product can be put into storage or shipped.

10. The manufacturing method according to claim 9, characterized in that: In the step S4, the heating temperature of the annealing furnace is 150° C., the holding time is 2 hours, and then the furnace is placed in a room temperature environment for natural cooling.

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