Please select the most similar patent number from A, B, C and D. Which number is?
A multi-process high-efficiency intelligent coating assembly line, which solves the problems in the existing technology in which a coating assembly line has a single process route, device repeat purchase rate is high and the assembly line occupies a relatively large area and so on. By configuring the structure of a connection between a conveying track (51) and a driving system (6), process routes (L1, L2 and L3) may be diversified, a variety of different coating processes may be automatically completed on one assembly line, a device is simplified and a reasonable area is occupied. By configuring a control system and a code reader (71) thereof, workpiece information carried by a small carrying car (54) may be automatically identified, corresponding processes for different workpieces may be completed, and the degree of intelligence is higher.
A: Disclosed is a flexible and automatic production line for punching, welding, or bonding an automobile exterior decorative member. The production line comprises a two-layer conveying platform for conveying a workpiece mounting seat, and a material loading device and a material discharging device provided at two ends of the two-layer conveying platform. A robot punching system and/or a robot welding/bonding system is further provided at a side surface of the two-layer conveying platform. The production line further comprises a control system. Each of the two-layer conveying platform, the material loading device, the material discharging device, the robot punching system, and the robot welding/bonding system are connected to the control system, and receive instructions so as to achieve precise machining. In the present invention, an entire production process is divided so as to be completed at multiple stations, and conveying between stations is performed by means of an assembly line. An overall production process on the automatic production line comprises: positioning a die having a workpiece, a robot performing punching, conveying the die, the robot performing welding/bonding, and conveying the die or discharging a member. An action performed at each station is automatically controlled by the robot, and a three-dimensional integrated structure of the production line for punching and welding the automobile exterior decorative member is established.
B: A thermal spraying apparatus and thermal spraying system, and a thermal spraying technique thereof. The thermal spraying apparatus comprises: an electric arc spraying device (06), a rotating work platform (01), a spraying fixture (02), a wire rack (07), and a main controller (08). The electric arc spraying device (06) is provided at an external periphery of the rotating work platform (01). The spraying fixture (02) is circumferentially disposed on the rotating work platform (01). Every spraying fixture (02) rotates by means of a driving force provided by a motor. The wire rack (07) is disposed at the periphery of the rotating work platform (01). Each of the wire rack (07) corresponds to an electric arc spraying device (06). The main controller (08) is controllably connected to a rotating work platform (01). The thermal spraying system further comprises a sand blasting and surface roughening equipment. The thermal spraying technique performs electric arc spraying on a silicon aluminum wire. By rotating the rotating work platform and moving the spraying fixture to different work positions, the thermal spraying apparatus can perform, by means of the electric arc spraying device, a thermal spraying operation in a sequence to realize a production line for a spraying process. The invention improves spraying efficiency and spraying quality when compared to a manual hand-held electric arc sprayer.
C: System integration for car bumper injection molding processing; at a gripper placement rack (5), automatically selecting a retrieving gripper (3) which is used for a corresponding product by means of a retrieving robot (2); by means of the retrieving robot (2) and the retrieving gripper (3) joining, retrieving a product from an injection molding machine (13); automatically cutting a material head on the product by means of a material head cutting device (4); automatically completing subsequent sintering processing of the product by means of a flame processing device (8); by means of a product turn over mechanism (6), the product may be received from the retrieving gripper (3) and then turned over, the product automatically being placed on a weighing mechanism (7) for automatic weighing, wherein whether or not the product is up to standard is tested by means of a method of weighing; the weighed product automatically entering a discharge production line (10), the product being sent out in an orderly manner by means of the discharge production line (10); a guardrail (12) may play the role of a safeguard. The entire equipment may automatically complete the procedures of material retrieving, material head cutting, sintering processing, product testing, product discharge and the like, manpower being greatly reduced, while processing efficiency is increased, and production costs are reduced.
D: A turnover type automatic assembly line, comprising: a turnover type conveying line (1); a feeding and suction mechanism (3) mounted on the turnover type conveying line (1); and a cartridge type part feeding mechanism (4) disposed at a side of the feeding and suction mechanism (3). The turnover type conveying line (1) comprises: a positioning line (11) and an assembly line (12) arranged side by side and in parallel; multiple positioning fixtures (14), the positioning fixtures (14) performing turnover type conveying between the positioning line (11) and the assembly line (12); and a lifting unlocking mechanism (13), the lifting unlocking mechanism (13) being disposed on the positioning line (11), the positioning line (11) and the assembly line (12) performing reverse conveying, and a fixture feeding station (114), a fixture positioning waiting station (115), and a fixture positioning station (116) being provided in sequence along the conveying direction on the positioning line (11), and the lifting unlocking mechanism (13) being located at the fixture positioning station (116) and located under the positioning line (11). The turnover type assembly line has high automation level and integration level, thereby greatly improving assembly efficiency, and has high position precision, thereby satisfying design assembly requirements.
Answer: D