An automatic assembly production line for automotive interior parts

Abstract

The application discloses an automatic assembly production line for automobile interior parts, which comprises a multi-station rotary table, the multi-station rotary table is divided into three stations, which are a feeding station, a buckle installation station and a part assembly station, respectively, each station is respectively provided with a tool clamp, wherein the side of the buckle installation station and the part assembly station is respectively provided with a buckle installation six-axis manipulator and a part assembly six-axis manipulator, the buckle installation six-axis manipulator side is provided with a feeding device, and the part assembly six-axis manipulator side is provided with a conveying belt two. The buckle installation station and the part assembly station are combined with the feeding and discharging of the parts, so that the production efficiency and the automation degree are improved. Meanwhile, the multi-station variable position device can adjust parameters such as the number of stations, the rotation angle and the rotation speed, the workbench and the tool clamp can be quickly disassembled and replaced, the flexibility of the assembly production line is improved, and the production line can quickly meet new production requirements.

Description

Technical Field

[0001] This invention relates to the field of industrial automation technology, specifically an automated assembly line for automotive interior parts. Background Technology

[0002] Currently, most automotive interior component assembly lines rely on manual assembly, with workers responsible for each step. This results in low production efficiency, high labor intensity, and a low level of automation. Furthermore, some existing semi-automated assembly lines lack flexibility and struggle to meet rapidly changing market demands.

[0003] Automotive interior parts come in many types. To meet the functional and aesthetic requirements of interior parts, especially for car seats, they are often characterized by irregular shapes and combinations of various materials. Their production and assembly require high precision and to minimize damage to the surface appearance.

[0004] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an automated assembly line for automotive interior parts, aiming to improve production efficiency and quality, reduce manual labor intensity, and enhance the automation level and flexible production capacity of the assembly line, enabling it to adapt to current market needs.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automated assembly production line for automotive interior parts, comprising a multi-station rotary table, the multi-station rotary table being divided into three stations: a loading station, a buckle installation station, and a parts assembly station. Each station is equipped with a tooling fixture. The buckle installation station and the parts assembly station are respectively equipped with a six-axis robot for buckle installation and a six-axis robot for parts assembly. The buckle installation six-axis robot is equipped with a feeding device on its side, and the parts assembly six-axis robot is equipped with a conveyor belt. After the automotive seat workpiece and cover are placed at the loading station, the buckles are installed sequentially at the buckle installation station, and the assembled parts are then conveyed out sequentially by the conveyor belt.

[0009] As a preferred embodiment, the tooling fixture further includes a part contour positioning block for placing the cover plate, a part positioning support and a part clamping device for limiting the position of the car seat workpiece, wherein the part positioning support is inclined and serves as a bottom support, so that the top of the inclined car seat workpiece is laterally abutted and limited by the part clamping device; it also includes a first part detection device and a second part detection device, which respectively detect whether the cover plate and the car seat workpiece are loaded and whether they are damaged.

[0010] As a preferred embodiment, the part contour positioning block is further provided with four blocks arranged circumferentially on the four sides. The positioning blocks are made of POM material. The positioning blocks on the front and rear sides are designed with two positioning pins according to the characteristics of the part. The part positioning support is designed with two positioning pins on the bottom and side surfaces. The part clamping actuator adopts a sliding cylinder and a POM block is installed on it. When the cylinder extends, the POM block presses down on the top of the part.

[0011] As a preferred embodiment, the feeding device further includes a snap-fit ​​feeding bin, a vibrating feeding device, and a linear feeding guide rail connected in sequence. The vibrating feeding device arranges the snap-fits neatly by vibration and feeds them into the linear feeding guide rail. The linear feeding guide rail is provided with a discharge bin at intervals at its far end. The linear feeding guide rail feeds the neatly arranged snap-fits into the discharge bin, and the discharge bin stores one snap-fit ​​at a time.

[0012] As a preferred embodiment, the linear feeding guide rail is further provided with a guide rail groove, and a limiting plate is provided in the middle of the guide rail groove. The limiting plate is supported by a connecting plate connected to the side of the linear feeding guide rail. The gap between the limiting plate and the bottom of the guide rail groove is adapted to the width of the bottom of the buckle. The receiving end of the discharge bin is provided with a magnet. When the frontmost buckle is pushed out, it moves forward to receive the buckle and is attracted by the magnet.

[0013] As a preferred embodiment, the discharge bin further includes a clip storage platform with a groove for positioning and storing individual clips. A photoelectric sensor is provided on the side of the groove, and the opening of the groove faces the outlet of the linear feeding guide. When the receiving cylinder extends, the groove connects with the linear feeding guide. A small magnet is installed on the back of the groove opening. The bin also includes a receiving cylinder, which is a linear motion slide cylinder. When the slide cylinder extends, it performs the receiving operation, and when it retracts, the clip storage platform moves away from the linear feeding guide to a preset distance.

[0014] As a preferred embodiment, the feeding device further includes a buckle residue detection device, which consists of four through-beam photoelectric sensors and their customized brackets. The customized brackets allow the sensors to be installed according to the relative positions of the buckles in the buckle grippers. Buckles are inserted into the vibrating feeding device.

[0015] As a preferred embodiment, the production line further includes a residual waste removal device located on one side of the loading station, which includes a parallel opening and closing pneumatic gripper, a connecting assembly, and a pair of copper brushes. The pair of copper brushes are installed at the output end of the parallel opening and closing pneumatic gripper via the connecting assembly, thereby enabling the two copper brushes to separate or come together. A waste channel is provided below the copper brushes, and the detached clips roll down through the waste channel to the waste collection device.

[0016] As a preferred embodiment, the end effector of the six-axis robot for assembling parts further includes a connecting mounting plate, on which multiple vacuum suction cups with rubber heads are staggered and mounted. Pneumatic grippers are provided on both sides of the mounting plate, wherein the pneumatic grippers are composed of a cylinder, a connecting plate and a rubber pad.

[0017] (III) Beneficial Effects

[0018] By adopting the above technical solution, the automated assembly line for automotive interior parts provided by the present invention has the following advantages compared with the prior art:

[0019] 1. By combining parts assembly, snap-fit ​​installation, and parts loading / unloading, production efficiency and automation are improved. The multi-station positioning device allows adjustment of parameters such as the number of stations, rotation angle, and rotation speed. Worktables and tooling fixtures can be quickly disassembled and replaced, enhancing the flexibility of the assembly line and enabling it to quickly meet new production demands. The production line is equipped with multiple sets of detection sensors, allowing for preliminary quality checks during production, screening for defective products, and improving overall product quality on the assembly line.

[0020] 2. The special structure of the buckle means that defective / non-standard products need to be peeled off and replaced in time before assembly. A residual waste removal device is set up to uniformly bind, detach and collect buckles of different non-standard sizes or different placement angles. The structure is simple and highly adaptable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the multi-station rotary table structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the tooling fixture structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the buckle feeding device of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection at the discharge point of the feeding device structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the buckle structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the end effector and the snap-fit ​​assembly of the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of a local structure at point A;

[0029] Figure 9 This is a schematic diagram of the snap-on discharge bin and the residual snap-on waste removal device of the present invention;

[0030] Figure 10 This is a schematic diagram of the waste removal process of the present invention;

[0031] Figure 11 This is a schematic diagram of the structure of the end effector of the robotic arm assembled with the parts of this invention.

[0032] In the diagram, the six-axis manipulator for snap-fit ​​installation is shown as follows: 1. Six-axis manipulator 1-1; 1-2. End effector 1-2; 2. Feeding device 2; 2-1. Snap-fit ​​material feeding bin 2-1; 2-2. Vibrating feeding device 2-2; 2-3. Linear feeding guide rail 2-3; 2-3-1. 2-4. Snap-fit ​​residue detection device 2-4; 2-5. Discharge bin 2-5; 2-5-1. 2-5-2. Discharge bin support 2-5-3; 2-6. Residual waste removal device 2-6; 2-6-1. Parallel opening and closing pneumatic gripper 2-6-1; 2-6-2. Connecting assembly 2-6-2; 2-6-3. Copper brush 2-6-3; 2-6-4. Waste channel 2-6-4; 3. Multi-station rotary worktable 3; 3-1. Rotatable tooling platform 3-1; 3-1. Tooling installation platform 3-1-1. ; Non-following bracket 3-1-2; Turntable bearing 3-1-3; Drive device 3-1-4; Platform frame 3-1-5; Tooling fixture 3-2; Part contour positioning block 3-2-1; Part No. 1 inspection device 3-2-2; Part positioning support 3-2-3; Part No. 2 inspection device 3-2-4; Part clamping device 3-2-5; Status indicator device 3-2-6; Part assembly six-axis robot 4; Connecting mounting plate 4-2-1; Vacuum suction cup assembly 4-2-2; Pneumatic gripper 4-2-3; Sensor 4-2-4; Limit block 4-2-5; Conveyor belt one 5; Conveyor belt two 6; Electrical box 7; Buckle 8; Magnet 9; Limit plate 10. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0034] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] See attached document Figure 1An automated assembly line for automotive interior parts includes a multi-station rotary table 3, which consists of two parts. The first part is a rotatable tooling platform 3-1, including a platform frame 3-1-5, a drive device 3-1-4, a turntable bearing 3-1-3, a non-following bracket 3-1-2, and a tooling installation platform 3-1-1. The second part is the tooling fixture 3-2, which includes a part contour positioning block 3-2-1, a first part detection device 3-2-2, a part positioning support 3-2-3, a second part detection device 3-2-4, a part clamping device 3-2-5, and a status indicator device 3-2-6; a feeding device 2 for providing buckles, which includes a buckle material feeding bin 2-1, a vibrating feeding device 2-2, a linear feeding guide rail 2-3, a discharge bin 2-5, a residual waste removal device 2-6, and a buckle residue detection device 2-4; a conveyor belt 2-6 for conveying finished and scrap parts; a six-axis robot 4-1 for assembling workpieces to be assembled and its end effector 4-2; and a six-axis robot 1 for assembling buckles onto workpieces and its end effector 1-2.

[0036] In practice, station 1 of the multi-station rotary table 3 is the loading station. After the tooling completes the loading of parts at station 1, the rotatable tooling platform 3-1 will initiate a station change, and the multi-station rotary table 3 will rotate to the next state. At this time, the tooling that has completed loading will move to station 2. Station 2 is the buckle installation station. Buckle installation is automatically performed by the six-axis buckle installation robot 1. The six-axis buckle installation robot 1 first runs to the buckle feeding device 2, and uses its end effector 1-2 to pick up four buckles 8 in sequence at the buckle feeding device's discharge table 2-5. Then, it automatically installs the buckles into the designated positions on the parts to be assembled. After the buckle installation is completed, the six-axis buckle installation robot 1 will send its end effector 1-2 into the buckle residue detection device 2-4. The sensor will detect the current... Regarding the residual clips in the end effector 1-2, when residual clips are detected, the system will determine that the currently assembled part is a problematic part and mark it. Subsequently, the six-axis clip installation robot 1 will move the end effector 1-2 to the clip waste removal device 2-6 and remove the residual clips. After the work at station two is completed, the multi-station rotary table 3 will rotate to the next state. At this time, the tooling with completed clip installation will move to station three. Station three is the part assembly station. The six-axis part assembly robot 4 uses the part assembly end effector 4-2 to assemble the parts on the tooling (closing the cover plate). Afterwards, the robot will use the same end effector to grab the assembled part and place it on conveyor belt 2-6. Conveyor belt 2-6 will deliver the finished product, completing the assembly of the part. Furthermore, the above three-station process can be performed simultaneously on the multi-station rotary table.

[0037] like Figure 2As shown, the multi-station rotary table 3 uses a servo motor for its rotation drive device 3-1-4. The end shaft of the servo motor is connected to the input end of the right-angle planetary reducer via a key connection, and the end of the servo motor is connected to the flange of the right-angle planetary reducer via a flange. The output flange of the right-angle planetary reducer is mounted on a connecting block and fixed to the rotary table platform frame 3-1-5. An adjustment block is provided on the side, and the linear adjustment of the connecting block is achieved by adjusting screws, thereby ensuring the correct meshing of the gears. The outer ring of the rotary table bearing 3-1-3 is the fixed end, mounted on the rotary table platform frame 3-1-5, and the inner ring of the rotary table bearing is the rotating end, mounted on the tooling mounting platform 3-1-1. The inner ring of the rotary table bearing is designed with internal teeth. The output shaft of the right-angle planetary reducer is connected to a gear, which meshes with the internal teeth of the rotary table bearing. Holes are provided between the tooling platform 3-1-1 and the turntable bearing 3-1-3. A non-rotating bracket 3-1-2 is installed in the middle of the upper surface of the platform frame 3-1-5. This bracket is directly mounted on the platform frame 3-1-5 via a connecting block, and therefore will not rotate with the tooling platform 3-1-1. The bracket is equipped with a barcode scanner, which can scan and record the workpiece's QR code and record the workpiece processing process. In summary, the rotatable tooling platform 3-1 drives the gears to rotate via a servo motor and a right-angle planetary reducer, which in turn drives the inner ring of the turntable bearing and the tooling mounting platform 3-1-1 mounted on it to rotate, realizing an adjustable multi-station switching function.

[0038] like Figure 3 As shown, tooling fixtures 3-2 (each loaded in...) Figure 2 Each tooling mounting platform 3-1-1 includes a part contour positioning block 3-2-1, a first part detection device 3-2-2, a part positioning support 3-2-3, a second part detection device 3-2-4, a part clamping device 3-2-5, and a status indicator device 3-2-6. The parts produced by this invention are divided into two parts, which need to be assembled together, followed by the installation of additional stainless steel clips. Since the production line of this invention contains various similar parts, the tooling fixture is designed with a part detection device equipped with multiple sensors to detect part type, part integrity, and whether the part is properly positioned.

[0039] The part contouring positioning block 3-2-1 consists of four specially designed positioning blocks responsible for positioning and placing part number one. After the part is placed, sensors detect it and provide data to the control system. The system then controls the robot to grasp the part in a manner corresponding to its characteristics. Part number one is made of plastic and contains small, fragile structures. The positioning blocks are made of POM material to reduce the possibility of scratches on the part. The outer positioning block has two special positioning pins designed according to the characteristics of the parts, corresponding to two types of parts (hereinafter referred to as type A and type B). When a type A part is placed in positioning block 3-2-1, the corresponding positioning pin on the outer positioning block will engage with its positioning hole. At this time, the other positioning pin is exactly in the cavity of this type of part, so it will not affect its positioning. Conversely, when a type B part is placed, the other positioning pin will perform the positioning function. Similarly, the left and right positioning blocks correspond to the sides of the two types of parts. When a type A part is placed in positioning block 3-2-1, the side of the left positioning block will fit against the side of the part; when a type B part is placed, the right side will fit against it. In addition, the bottom surfaces of the two types of parts have the same shape, so the same scheme can be used for the bottom surface regardless of the type of part being placed. In this way, the parts can be accurately positioned by the bottom surface, the side surface, and the locating pins.

[0040] The No. 1 part detection device 3-2-2 contains multiple photoelectric sensors, which are arranged at specific positions within the contour positioning block 3-2-1. Each sensor's detection position corresponds to a critical structural feature of the part; these features differ for different types of parts. Therefore, based on the sensor information, the control system can infer the part's type or whether it meets any part category criteria. If it fails to meet any part category criteria, the system will determine that a critical structural feature of the part is damaged or that the part has not been successfully placed. In summary, the specially arranged sensors provide crucial information to the control system, enabling automated production assembly and further reducing part error rates.

[0041] The part positioning support 3-2-3 also has two positioning pins on its bottom surface, similar to the design concept of the part contour positioning block 3-2-1. The part positioning support 3-2-3 uses positioning pins on the bottom and sides for positioning, and can simultaneously meet the positioning and installation needs of two types of parts. The second part detection device 3-2-4 consists of two proximity sensors and two photoelectric sensors. Since the second part is made of metal, no joint structure detection sensors were added. The sensors mainly detect the part type and whether the part is placed in the correct position. The part positioning support 3-2-3 is designed with a part clamping device 3-2-5. The part clamping actuator uses a sliding cylinder with a POM block mounted on it. When the cylinder extends, the POM block presses down on the top of the part, fixing it in place.

[0042] like Figure 4-5As shown, the clip feeding device 2 provides materials for clip installation. Clips are added from the feeding bin 2-1, which automatically adds clips based on the remaining number of clips in the vibrating feeding device 2-2. A clip detection probe inserted into the vibrating feeding device provides information on the remaining clip quantity. When the remaining clip quantity is insufficient, the clip feeding bin 2-1 opens a baffle to release clips and automatically stops feeding when the remaining clip quantity is sufficient. The vibrating feeding device 2-2 arranges the clips neatly through vibration and feeds them into the linear feeding guide 2-3. The linear feeding guide 2-3 feeds the neatly arranged clips into the discharge bin 2-5. The discharge bin 2-5 can store one clip at a time. After the discharge bin 2-5 receives a clip, the sensor sends a signal, and the vibrating feeding device 2-2 and the linear feeding guide 2-3 temporarily stop until the clip installation robot removes the clip.

[0043] A guide groove 2-3-1 is provided on the linear feeding guide rail 2-3. The latches 8 are stacked within the guide groove 2-3-1, with adjacent latches 8 fitting together. The subsequent entry of a latch 8 ultimately pushes the foremost latch 8 to exit through the guide groove 2-3-1. A magnet is provided at the receiving end of the discharge hopper 2-5. As the foremost latch 8 is pushed out, it moves forward to receive the latch and is attracted by the magnet. It should be noted that the magnetic attraction force at this location is less than the attraction force of the magnet on the end effector 1-2, thus allowing the latches 8 to be easily removed.

[0044] A limiting plate 10 is also provided in the middle of the guide rail groove 2-3-1. The limiting plate is supported by a connecting plate connected to the side of the linear feeding guide rail 2-3. The gap between the limiting plate 10 and the bottom of the guide rail groove 2-3-1 is adapted to the width of the bottom of the buckle, so that the limiting groove can move accurately and avoid the two outer expansion edges of the buckle 8 from getting stuck in the guide rail groove 2-3-1 due to size difference or force deviation, causing blockage.

[0045] The feeding device 2 also includes a residual waste removal device 2-6 and a clip residue detection device 2-4. The clip residue detection device consists of four through-beam photoelectric sensors and their custom-designed brackets. The custom-designed brackets allow the sensors to be installed according to the relative positions of the clips in the clip grippers. Therefore, after the clip-clamping robot moves the clip grippers to the designated points, the sensors can detect the residual clip status. If a clip is detected that is not fully installed in the clip grippers, the robot will move the clip grippers to the residual clip removal device 2-6 for clip removal.

[0046] Further details are attached. Figure 6-8As shown, due to the special shape of the buckle 8, the end effector 1-2 needs to limit its extraction while also applying flexible assembly. This means that while opening the fitting slot to accommodate the buckle 8, it cannot be fixed in place, preventing it from falling off. Therefore, in this embodiment, a magnet 9 is provided on the outer wall of the V-shaped groove of the end effector 1-2 that fits the buckle 8. Thus, the end effector 1-2 can both attract the buckle and move it, and insert it without affecting the insertion and assembly angle. In other words, the fastening force between the buckle and the seat workpiece after insertion is greater than the attraction force of the magnet.

[0047] like Figure 9-10 As shown, in the clip feeding device 2, the discharge bin 2-5 consists of three parts: the first part is the clip storage platform 2-5-1, which is designed with a groove for positioning and storing a single clip. A photoelectric sensor is installed on the side of the groove to detect whether a clip is present in the storage platform. The opening of the groove faces the outlet of the linear feeding guide 2-3. When the receiving cylinder 2-5-2 extends, the groove connects with the linear feeding guide 2-3. A small magnet is installed on the back of the groove opening. When a clip approaches the groove opening at a certain distance, the magnet attracts the clip into the groove, thus realizing... The first part is the receiving of the clips; the second part is the receiving cylinder 2-5-2. The cylinder is a sliding cylinder, which can achieve relatively precise linear movement and can bear a certain lateral force. When the cylinder extends, it performs the above-mentioned receiving work. When the cylinder retracts, the clip storage platform 2-5-1 will move away from the linear feeding guide 2-3 by a certain distance to ensure that it will not interfere with the subsequent clips; the third part is the discharge bin bracket 2-5-3. The bracket is made of multiple aluminum alloy plates and is designed with longitudinal and transverse slots to achieve small-distance position adjustment to ensure that it can be aligned with the linear feeding guide 2-3.

[0048] Due to the special structure of the snap fastener 8, defective / non-standard products are easily produced. The main problems with non-standard snap fasteners 8 are that they may be too tightly fitted into the end effector 1-2, making assembly onto the seat workpiece impossible; or they may be too large, resulting in a loose fit into the end effector 1-2, leading to detachment and difficulty in assembly. Therefore, defective products need to be removed and replaced. Thus, a suitable residual waste removal device 2-6 is installed on one side to quickly remove defective snap fasteners.

[0049] The residual waste removal device 2-6 includes a parallel opening and closing pneumatic gripper 2-6-1, a connecting assembly 2-6-2, copper brushes 2-6-3, and a waste channel 2-6-4. A pair of copper brushes 2-6-3 are mounted on the fingers of the parallel opening and closing pneumatic gripper 2-6-1 via the connecting assembly 2-6-2. The cylinder can thus drive the two copper brushes to separate or come together. When the copper brushes separate, the gripper can insert the fingers with the retaining clips into the middle of the copper brushes. Then, the copper brushes come into contact with the gripper and the gripper moves away. At this time, the clips are caught by the copper brush bristles and peel off. The peeled clips roll down through the waste channel 2-6-4 to the waste collection device.

[0050] The advantage of using copper brush bristles for removal lies in its simple structure and high adaptability. Because the copper brush bristles have a certain degree of hardness, the bristles on both sides move towards each other and intertwine, creating a binding force that effectively and quickly disengages the non-standard magnetic clips 8 on the end effector 1-2 without interfering with its normal operation. The disengaged clips 8 fall normally under gravity after the copper brush bristles have shifted. See the appendix for details. Figure 7 In this process, due to the special nature of the assembly position of the seat workpiece, the terminal positions of the end effector 1-2 are in groups of two, with a 90° angular deviation between adjacent groups. The setting of the copper brush bristles can be completely ignored, and multi-angle disengagement can be achieved without subdividing the structure. At the same time, there is no need to subdivide the size of the buckle 8, so its adaptability is high.

[0051] like Figure 11 As shown, the end effector of the six-axis robot for assembling parts includes a connecting mounting plate 4-2-1, used to correctly connect and install the various components of the end effector in appropriate positions; a vacuum suction cup assembly 4-2-2, which, by setting vacuum suction cups in appropriate positions according to the characteristics of the parts to be gripped and assembled, can adapt to the gripping needs of different types of parts, and the use of rubber-headed vacuum suction cups effectively avoids damage to the surface of the parts during the handling and assembly process; a pneumatic gripper 4-2-3, which is composed of a cylinder, a connecting plate, and a rubber pad, used to grip the finished parts that have been assembled, with the gripping position located at the metal structure of the finished parts to achieve automatic unloading, and the gripper opening does not affect the use of the suction cups; a sensor 4-2-4, used to detect whether there are parts on the actuator to provide information to the control system; and a limit block 4-2-5, which, when the actuator grips a part, will respectively abut against multiple positions of the part to restrict the position of the part and ensure that the gripper accurately grips the part. Therefore, the end-effector 4-2 can perform part assembly and part unloading simultaneously, reducing the overall size of the assembly mechanism and improving the production efficiency of the assembly line.

[0052] This invention combines a multi-station rotary table, a vibratory feeding device, a six-axis robot, and specialized positioning and clamping fixtures, integrating multiple processes and balancing the working time of each process to achieve automated assembly. This replaces existing manual assembly line operations, improving assembly production quality and efficiency while reducing the overall size of the production line. Simultaneously, the product positioning and clamping fixture employs specially designed positioning and sensor components, simultaneously meeting the positioning, clamping, and structural detection needs of various workpieces, achieving automatic workpiece type identification and recording, effectively enhancing the automation level of the production line. Furthermore, the use of two six-axis robots, an adjustable rotary table, and a multi-functional end effector effectively improves the flexibility of the assembly line, enabling it to meet rapidly changing market demands.

[0053] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated assembly line for automotive interior parts, used to install clips on automotive seat parts and assemble them with cover plates, characterized in that: The system includes a multi-station rotary worktable, which is divided into three stations: a loading station, a snap-fit ​​installation station, and a parts assembly station. Each station is equipped with tooling fixtures. The snap-fit ​​installation station and the parts assembly station are respectively equipped with a six-axis snap-fit ​​installation robot and a six-axis parts assembly robot on their sides. The snap-fit ​​installation robot has a feeding device on its side, and the parts assembly robot has a conveyor belt on its side. After the automotive seat workpiece and cover are placed at the loading station... The components are sequentially installed at the snap-on installation station and assembled with the cover plate, and the assembled parts are sequentially conveyed out by the second conveyor belt; it also includes a residual waste removal device located on one side of the loading station, which includes a parallel opening and closing pneumatic gripper, a connecting assembly and a pair of copper brushes. The pair of copper brushes are installed at the output end of the parallel opening and closing pneumatic gripper through the connecting assembly, so as to drive the two copper brushes to separate or stick together. A waste channel is provided below the copper brushes, and the snap-on parts roll down to the waste collection device through the waste channel.

2. The automated assembly line for automotive interior parts according to claim 1, characterized in that: The tooling fixture includes a part contour positioning block for placing the cover plate, a part positioning support and a part clamping device for limiting the position of the car seat workpiece. The part positioning support is inclined and serves as a bottom support, so that the top of the inclined car seat workpiece is laterally abutted and limited by the part clamping device. It also includes a first part detection device and a second part detection device, which respectively detect whether the cover plate and the car seat workpiece are loaded and whether they are damaged.

3. The automated assembly line for automotive interior parts according to claim 2, characterized in that: The part contour positioning block has four blocks arranged circumferentially on the four sides. The positioning blocks are made of POM material. The positioning blocks on the front and rear sides are designed with two positioning pins according to the characteristics of the part. The part positioning support is designed with two positioning pins on the bottom and side. The part clamping actuator adopts a slide cylinder and a POM block is installed on it. When the cylinder extends, the POM block presses down on the top of the part.

4. The automated assembly line for automotive interior parts according to claim 1, characterized in that: The feeding device includes a snap-on feeding bin, a vibrating feeding device, and a linear feeding guide rail connected in sequence. The vibrating feeding device arranges the snaps neatly by vibration and feeds them into the linear feeding guide rail. The linear feeding guide rail is provided with a discharge bin at intervals at its far end. The linear feeding guide rail feeds the neatly arranged snaps into the discharge bin, and the discharge bin stores one snap at a time.

5. The automated assembly line for automotive interior parts according to claim 4, characterized in that: The linear feeding guide rail has a guide rail groove, and a limiting plate is provided in the middle of the guide rail groove. The limiting plate is supported by a connecting plate connected to the side of the linear feeding guide rail. The gap between the limiting plate and the bottom of the guide rail groove is adapted to the width of the bottom of the buckle. The receiving end of the discharge bin is provided with a magnet. When the frontmost buckle is pushed out, it moves forward to receive the buckle and is attracted by the magnet.

6. The automated assembly line for automotive interior parts according to claim 4, characterized in that: The discharge bin includes a clip storage platform with a groove for positioning and storing individual clips. A photoelectric sensor is provided on the side of the groove. The opening of the groove faces the outlet of the linear feeding guide. When the receiving cylinder extends, the groove connects with the linear feeding guide. A small magnet is installed on the back of the groove opening. The bin also includes a receiving cylinder, which is a linear motion slide cylinder. When the slide cylinder extends, it performs the receiving operation. When it retracts, the clip storage platform moves away from the linear feeding guide to a preset distance.

7. The automated assembly line for automotive interior parts according to claim 4, characterized in that: The feeding device also includes a buckle residue detection device, which consists of four through-beam photoelectric sensors and their custom brackets. The custom brackets allow the sensors to be installed according to the relative positions of the buckles in the buckle grippers. A buckle detection probe is inserted into the vibrating feeding device.

8. The automated assembly line for automotive interior parts according to claim 1, characterized in that: The end effector of the six-axis robot for assembling the parts includes a connecting mounting plate. Multiple vacuum suction cups with rubber heads are staggered on the mounting plate. Pneumatic grippers are provided on both sides of the mounting plate. The pneumatic grippers are composed of cylinders, connecting plates and rubber pads.

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