| The inner box of high-grade packing carton has many manufacturing processes.Now the production of inner box are more hand-made or use semi-automatic mechanical equipment to make the inner box.Automated production equipment is in prototype testing.The existing automatic inner box forming machine consists of 7units.In view of the low production efficiency of conveying molding machine.A kind of conveyor forming machine which can realize high efficiency and stable production is proposed.The main work of this paper is as follows:(1)The technological action of conveying molding machine is described,and the overall scheme of the whole high efficiency conveying molding machine is put forward.In this paper,the load-shifting device is compared,and the load-shifting device with the main structure of expanding the connecting rod mechanism of pendulum gear is selected,and the design of the other parts is introduced.(2)Through structural analysis,the load-shifting device is divided into two gear linkage mechanisms,in which the gear linkage mechanism 1 is the gear linkage mechanism that expands the pendulum angle.On the premise of forward gear linkage mechanism,this paper introduces the gear linkage mechanism which expands the swing angle of output gear,and calculates the relationship between angular velocity and angle of each component,which is used as the theoretical support for the design of gear linkage mechanism 1.Gear linkage mechanism 2 is simple and does not make reasoning.(3)The load-shifting device is still divided into two gear linkage mechanisms to design and tabulate the parameters :1 For the gear linkage mechanism 1: according to the derived theory,the rod length parameter d is optimized and searched by and the pendulum angle of the output gear in the gear linkage mechanism can reach 180°accurately.2 For gear linkage mechanism 2,the length of the rod can meet the requirements of working conditions.3 Combine the two institutions into a complete mechanism.(4)The model of the moving device is established according to the parameter table and imported into the Adams for kinematics simulation and dynamics simulation.By kinematics simulation,the pendulum angle of component 4 is 179.6°,the displacement trajectory and velocity of sucker point meet the design requirements,the acceleration curve has no sharp point and the mechanism has no flexible impact.Through the dynamic simulation of the bearing position of the moving device and the fixed connection point with the ground,the maximum force of the bearing position is10261 N,which is used as the theoretical support for bearing selection.And the force with the fixed connection point on the ground reflects the inertial force of the motion device.The maximum force of the x direction is 601 N,the maximum force of the y direction is 759 N,for the next transient analysis.(5)In order to analyze the influence of inertial force on the steady state of the conveying molding machine,the transient analysis of the frame of the conveying molding machine and the visual fixed frame of the manipulator is carried out,and the maximum displacement of the visual fixed frame is 0.02 mm.under the action of the changing inertial force of the moving device To analyze whether the conveyor can run stably under the excitation of various excitation sources,the modal analysis of the frame and fixed frame is carried out,and the natural frequency range is 33.4-190.4 HZ,while the maximum excitation source of conveyor molding machine is only 24 HZ.Therefore,it will not resonate and can run stably.Based on the derived theory of gear linkage mechanism with enlarged pendulum angle,one-dimensional optimization design of parameters is carried out by Matlab.The correctness and reliability of the design are verified by Adams and ANSYS,which provides theoretical and practical support for the actual production and debugging of the conveying molding machine. |
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