Automobile working island assembling device

Abstract

The utility model relates to the technical field of automobile assembly, in particular to an automobile working island assembly device which comprises an automatic guide vehicle and at least two assembly manipulators symmetrically distributed on two sides of the automatic guide vehicle. The fastening mechanisms are uniformly distributed and are fixedly connected to the end part of the assembling manipulator; through cooperative use of the two-way air pump and the air spring, a worker can adjust the elastic force of the air spring according to the maximum fastening torsion of different fasteners, so that the electric clamp is timely separated from the servo motor when the torsion of the electric clamp reaches the maximum fastening torsion of the fasteners, the probability that the fasteners are excessively fastened is reduced, and the fastening efficiency is improved. And the purpose of expanding the overall application range of the assembling device is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automobile assembly technology, and in particular to an automobile work island assembly device. Background Technology

[0002] Automotive assembly islands typically consist of automated guided vehicles and multiple assembly robots, and are currently the most common devices used for automated automotive assembly.

[0003] Chinese patent discloses an automatic robotic assembly device for automotive fasteners (authorization announcement number CN213615188U). After the clamping plate tightens the bolt, it continues to rotate. Under these circumstances, the resistance encountered by the clamping plate during rotation increases, causing the turntable to push the limit ball out of the limit hole when it rotates. When the limit ball moves outward, it pushes the movable rod to move and compresses the longitudinal spring. At this time, the movable rod and the turntable no longer engage. Therefore, when the motor drives the turntable to rotate, the turntable will not drive the internal gear to rotate, thereby stopping the clamping plate from rotating and preventing over-tightening and damage to the bolt.

[0004] Since fasteners of different specifications have different tightening forces, and the above-mentioned device uses a fixed-specification longitudinal spring to move and position the limiting ball, when the robot arm tightens fasteners of different specifications, it is easy for the fasteners to be too tight, thus limiting its applicability.

[0005] Therefore, an automotive work island assembly device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an automotive work island assembly device to solve the above-mentioned problems, thereby improving the difficulty in adjusting the fastening force of existing automotive fastener assembly robots.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: an automotive work island assembly device, comprising: an automated guided vehicle and at least two assembly robots symmetrically distributed on both sides of the automated guided vehicle; and uniformly distributed fastening mechanisms fixedly connected to the ends of the assembly robots.

[0008] Preferably, the fastening mechanism includes a servo motor, an electric clamp, and a controller. The servo motor is fixedly connected to the end of the assembly robot, and the electric clamp is rotatably connected to the end of the assembly robot. The electric clamp has an internal mounting cavity. A circular block is fixedly connected to the surface of the servo motor, and an arc groove is formed on the surface of the circular block. A positioning block that inserts into the mounting cavity is engaged inside the arc groove. An air spring is provided between the positioning block and the mounting cavity. One end of the air spring is fixedly connected to and communicates with a bidirectional air pump. The controller is fixedly connected to the surface of the electric clamp. Through the combined use of the bidirectional air pump and the air spring, the operator can adjust the spring force of the air spring according to the maximum fastening torque of different fasteners, so that the electric clamp disengages from the servo motor in time when the torque of the electric clamp reaches the maximum fastening torque of the fastener, thereby reducing the probability of the fastener being over-tightened and thus expanding the overall applicability of the assembly device.

[0009] Preferably, the arc groove and the positioning block are both arc-shaped and matched with the vertical cross-sectional shape of the arc groove. The center point of the arc groove and the positioning block are both set inside the mounting cavity. This can reduce the probability of the positioning block getting stuck inside the arc groove, so as to ensure that the positioning block can slide out of the arc groove smoothly.

[0010] Preferably, there are no fewer than ten arc grooves, which are distributed in a ring around the center line of the circular block on the surface of the circular block. This can increase the success rate of connecting the arc grooves with the positioning block.

[0011] Preferably, the mounting cavity, positioning block, and air spring are used in combination, and the number of the mounting cavity, positioning block, and air spring is not less than four. This can increase the lower limit of the tightening torque and reduce the occurrence of excessively low tightening torque.

[0012] Preferably, one end of the bidirectional air pump is fixedly connected to and communicates with a diverter pipe, and one end of the air spring is fixedly connected to and communicates with the diverter pipe. This enables the bidirectional air pump to adjust all the air springs simultaneously, thereby reducing the cost of air pressure regulation.

[0013] Preferably, the diverter pipe is fixedly connected to the bidirectional air pump and is connected to a solenoid valve, which can prevent air from flowing into the bidirectional air pump during the compression of the air spring, thereby reducing the occurrence of gas leakage.

[0014] Preferably, a pressure sensor is fixedly connected to the surface of the electric clamp. One end of the pressure sensor passes through the electric clamp and is fixedly connected and communicates with the shunt pipe. This can detect the air pressure value inside the air spring in real time and feed the detection data back to the controller in real time. The controller can then control the bidirectional air pump to automatically perform air replenishment when the air pressure inside the air spring is lower than a specified value according to a preset program.

[0015] The beneficial effects of this utility model are:

[0016] 1. By using a two-way air pump and an air spring together, the operator can adjust the spring force of the air spring according to the maximum tightening torque of different fasteners, so that the electric clamp will disengage from the servo motor in time when the torque of the electric clamp reaches the maximum tightening torque of the fastener, thereby reducing the probability of the fastener being over-tightened and thus expanding the overall applicability of the assembly device.

[0017] 2. The design adopts real-time monitoring of the internal air pressure of the air spring. This can detect the internal air pressure value of the air spring in real time and feed the detection data back to the controller in real time. The controller can then control the bidirectional air pump to automatically replenish air when the internal air pressure of the air spring is lower than the specified value according to the preset program. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the connection between the partial cutting structure and the fastening mechanism of the assembly robot in this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the partial cutting structure and fastening mechanism of the assembly robot in this utility model;

[0021] Figure 4 This is a schematic diagram showing the arrangement of the mounting cavity, arc groove, positioning block, and air spring in this utility model;

[0022] Figure 5 This is a partial structural diagram of the fastening mechanism in this utility model.

[0023] In the diagram: 1. Automated Guided Vehicle; 2. Assembly Robot; 3. Fastening Mechanism; 301. Servo Motor; 302. Electric Clamp; 3021. Mounting Cavity; 303. Circular Block; 3031. Arc Groove; 304. Positioning Block; 305. Air Spring; 306. Two-Way Air Pump; 307. Controller; 308. Diverter Pipe; 309. Solenoid Valve; 310. Air Pressure Sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In practical implementation: such as Figure 1-5 As shown, an automotive work island assembly device includes: an automated guided vehicle 1 and at least two assembly robots 2, which are symmetrically distributed on both sides of the automated guided vehicle 1; and uniformly distributed fastening mechanisms 3, which are fixedly connected to the ends of the assembly robots 2.

[0026] Automated Guided Vehicles (AGVs), also known as AGVs, are core automated equipment in the modern automobile manufacturing industry. They rely on a variety of advanced guiding technologies such as electromagnetic induction and laser detection to travel precisely along a preset path. They are common carrying and transfer equipment in automated assembly lines.

[0027] Assembly robots are indispensable automated equipment in modern automobile manufacturing. They mimic the movements of a human arm, precisely executing complex assembly tasks such as handling, positioning, and installing automotive parts through pre-programmed procedures and paths. Assembly robots not only improve assembly efficiency and reduce labor costs but also ensure assembly accuracy and quality. They are widely used in chassis, engine, and transmission assembly lines, continuously driving the automation and intelligentization of the automotive manufacturing industry through the trends of intelligent, collaborative, flexible, and visualized technologies, contributing to the sustainable development of the automotive industry.

[0028] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the fastening mechanism 3 includes a servo motor 301, an electric clamp 302, and a controller 307. The servo motor 301 is fixedly connected to the end of the assembly robot 2, and the electric clamp 302 is rotatably connected to the end of the assembly robot 2. The electric clamp 302 has an installation cavity 3021 inside. A circular block 303 is fixedly connected to the surface of the servo motor 301. An arc groove 3031 is opened on the surface of the circular block 303. A positioning block 304 that is inserted into the installation cavity 3021 is snapped into the arc groove 3031. An air spring 305 is provided between the positioning block 304 and the installation cavity 3021. One end of the air spring 305 is fixedly connected to and communicates with a bidirectional air pump 306. The controller 307 is fixedly connected to the surface of the electric clamp 302.

[0029] The assembly robot 2 moves the electric clamp 302 to the corresponding position according to the preset program. The controller 307 controls the electric clamp 302 to clamp the fastener according to the preset program. After the clamping operation is completed, the controller 307 controls the servo motor 301 to rotate in the corresponding direction a specified number of times according to the preset program. The servo motor 301 drives the circular block 303 to rotate a specified number of times. The circular block 303 drives the electric clamp 302 to rotate a specified number of times through the arc groove 3031, the positioning block 304 and the mounting cavity 3021. The electric clamp 302 drives the fastener to rotate a specified number of times until the fastener is tightened.

[0030] If the fastener is tightened in advance, the fastener will prevent the electric clamp 302 from rotating. The electric clamp 302 will prevent the positioning block 304 from rotating through the mounting cavity 3021. The positioning block 304 will be forced to move into the mounting cavity 3021 along the arc groove 3031. At this time, the positioning block 304 will simultaneously compress the air spring 305. When the positioning block 304 is completely separated from the arc groove 3031, the servo motor 301 will not be able to rotate the electric clamp 302 normally, so as to avoid the fastener being over-tightened.

[0031] The arc groove 3031 and the positioning block 304 are both arc-shaped, matching the vertical cross-sectional shape of the arc groove 3031. The center points of the arc groove 3031 and the positioning block 304 are both located inside the mounting cavity 3021. There are no fewer than ten arc grooves 3031, which are distributed in a ring around the axis of the circular block 303 on the surface of the circular block 303. The mounting cavity 3021, the positioning block 304, and the air spring 305 are all used in combination, and there are no fewer than four mounting cavities 3021, the positioning block 304, and the air spring 305. One end of the bidirectional air pump 306 is fixedly connected to and connected to the diversion pipe 308. One end of the gas spring 305 is fixedly connected to and communicates with the diverter pipe 308; the diverter pipe 308 is fixedly connected to and communicates with the bidirectional air pump 306 via a solenoid valve 309; a pressure sensor 310 is fixedly connected to the surface of the electric clamp 302, one end of which passes through the electric clamp 302 and is fixedly connected to and communicates with the diverter pipe 308. This allows for real-time detection of the air pressure inside the air spring 305 and real-time feedback of the detection data to the controller 307. The controller 307 can then control the bidirectional air pump 306 to automatically replenish air when the air pressure inside the air spring 305 is lower than a specified value, according to a preset program.

[0032] When using this invention, if it is necessary to tighten fasteners of different specifications, the operator can pre-set the air pressure inside the air spring 305 to the controller 307. Then, the controller 307 controls the bidirectional air pump 306 to pump or supply air to all the air springs 305 through the diversion pipe 308 according to the preset program. This can adjust the air pressure inside the air spring 305 and effectively adjust the maximum torque of the electric clamp 302 disengaging from the servo motor 301 to meet the adjustment of the maximum torque of different fasteners.

[0033] It should be noted that the automated guided vehicle 1, assembly robot 2, servo motor 301, electric clamp 302, air spring 305, bidirectional air pump 306, controller 307, solenoid valve 309, and air pressure sensor 310 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the automated guided vehicle 1, assembly robot 2, servo motor 301, electric clamp 302, bidirectional air pump 306, controller 307, solenoid valve 309, and air pressure sensor 310 can be powered by built-in power supply or by mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automotive work island assembly, characterized by, Include: Automatic guided vehicle (1) and the number of assembly robot (2) is not less than two, the assembly robot (2) is symmetrically distributed on both sides of the automatic guided vehicle (1); The fastening mechanism (3) is uniformly distributed, and the fastening mechanism (3) is fixedly connected to the end of the assembly robot (2); Wherein, the fastening mechanism (3) includes a servo motor (301), an electric clamp (302) and a controller (307), the servo motor (301) is fixedly connected to the end of the assembly robot (2), the electric clamp (302) is rotatably connected to the end of the assembly robot (2), the electric clamp (302) is internally provided with a mounting cavity (3021), the surface of the servo motor (301) is fixedly connected with a circular block (303), the surface of the circular block (303) is provided with a circular groove (3031), the circular groove (3031) is internally clamped with a positioning block (304) inserted with the mounting cavity (3021), the air spring (305) is arranged between the positioning block (304) and the mounting cavity (3021), one end of the air spring (305) is fixedly connected and communicated with a bidirectional air pump (306), and the controller (307) is fixedly connected to the surface of the electric clamp (302).

2. An automotive work island assembly as defined in claim 1, wherein: The vertical section shape of the circular groove (3031) and the positioning block (304) and the circular groove (3031) is matched with the circular arc shape, and the center points of the circular groove (3031) and the positioning block (304) are arranged in the mounting cavity (3021).

3. An automotive work island assembly as defined in claim 1, wherein: The number of the circular groove (3031) is not less than ten, and the circular groove (3031) is annularly distributed on the surface of the circular block (303) around the axis of the circular block (303).

4. An automotive work island assembly as defined in claim 1, wherein: The mounting cavity (3021), the positioning block (304) and the air spring (305) are used together, and the number of the mounting cavity (3021), the positioning block (304) and the air spring (305) is not less than four.

5. An automotive work island assembly as defined in claim 1, wherein: One end of the bidirectional air pump (306) is fixedly connected and communicated with a shunt pipe (308), and one end of the air spring (305) is fixedly connected and communicated with the shunt pipe (308).

6. An automotive work island assembly as defined in claim 5, wherein: The electromagnetic valve (309) is fixedly connected and communicated between the shunt pipe (308) and the bidirectional air pump (306).

7. An automotive work island assembly as defined in claim 5, wherein: The surface of the electric clamp (302) is fixedly connected with an air pressure sensor (310), one end of the air pressure sensor (310) penetrates the electric clamp (302) and is fixedly connected and communicated with the shunt pipe (308).

Images