| In recent years,the choice of tire brand and quality have become an important criterion for customers to buy a car.The configuration of go od car tires not only has obvious advantages in comfort,noise reduction and economy,but also guarantees the driving of the car.safety.Vulcanization is the last process in the manufacture of tires.Compared with the traditional tire vulcanization technology,the new direct pressure shaping vulcanization technology pushes the tire manufacturing industry to a new level by virtue of the use of metal inner molds and the application of electromagnetic induction heating technology.Higher level.In the actual tire production process,due to the molding defects of the blank tire(such as forming joints)and the molding defects of the vulcanization mold(active mold),the vulcanized finished tire will have a certain degree of unevenness,which affects normal use.In order to solve this kind of vulcanization defect,the tire manufacturer proposes a fixed-point vulcanization solution,which is to locate the circumferential position of the blank tire before sending it into the vulcanization mold,so that in the circumferential direction,the position of the blank tire shaping process defect position and the vulcanizing machine are active The mold defect compensation position is aligned,so as to reduce the influence of process defects on the unevenness of the final finished tire when the blank tire is shaped.The tire direct pressure shaping vulcanizing machine is the main equipment for realizing the tire direct pressure vulcanization technology.The mechanism for completing the tire loading and unloading process is the vulcanizing machine tire grasping manipulator,but the currently commonly used tire grasping manipulator can only realize simple tire blank handling Movement,functionality and automation are low.Based on the direct pressure vulcanizing machine,this paper proposes a rotary tire grabbing manipulator for fixed-point vulcanization of tire blanks.The newly designed manipulator increases the freedom of the front and rear circumferential rotation of the tire grabbing of the manipulator,which not only realizes the tire grabbing process.The automatic control of the circumferential position of the green tire completes the circumferential positioning,and the tire code recognition function is added to the manipulator,and the data collection and transmission of tire production information can be realized on the tire direct pressure shaping vulcanizer.The main research contents of this topic are as follows:(1)In order to achieve more effective fixed-point vulcanization of tire blanks,three sets of rotary tire grasping manipulators that can be used in tire direct pressure vulcanizing machines are designed,and the designed manipulator is subjected to motion feasibility analysis calculations and motor,cylinder and other driving devices.Model selection,using the designed rotary tire grabbing manipulator,realized fixed-point vulcanization on the vulcanizer for the first time,making the tire blank circumferential positioning more precise and controllable,and can realize tire data scanning and code collection and data transmission,which is convenient for informatization in the tire warehouse.management;(2)Establish a three-dimensional model of the designed rotary tire grabbing manipulator,use the UG NX 12.0 software motion simulation module to perform kinematics simulation of the rotary tire grabbing manipulator,analyze the movement feasibility of the rotary tire grabbing manipulator,and eliminate and solve possible problems.Interference issues,reliable analysis of the motion accuracy and stability of the manipulator;(3)According to the actual working conditions of the manipulator,use ABAQUS to establish a mechanical analysis model,reasonably analyze the force of the manipulator,and analyze the stress and displacement changes of the manipulator as a whole and key parts by finite element analysis to ensure that the manipulator can meet the strength and displacement of the manipulator under normal working conditions.Accuracy requirements;(4)Design the control system of the rotary tire grabbing manipulator,design the motion control flow chart of the manipulator,and use Siemens S7-300 PLC to design the lower computer of the control system,including the use of STEP 7 software for I/O port design and hardware configuration And compile the manipulator operation program,and use S7-PLCSIM to simulate the program logic;based on the Fameview configuration software to design the upper computer of the control system,design the manipulator movement monitoring system,so that the movement process of the tire grasping manipulator of the tire shaping vulcanizer can be Get real-time monitoring and control. |
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