Research And Optimization On Copper Packaging Line Feeder's Mechanical Properties

The cathode copper automatic packaging line project, aiming at the cathode copper packing technology and equipment backward situation, with comprehensive application of hydraulic, mechanical, electronic, computer control precision measurement,was developt by our univeristy. The feeder line of discharging device, is one of key equipment which compose the whole line. Under field use, disadvantages of it appears, such as:low stiffness, the deformation of the beam and dynamic instability phenomena. Therefore, by analyse the static and dynamic mechnisms of the discharg-ing device under working conditions, its weaknesses, optimized improvement is found out and optimization is then carried out. The following is discussed in this paper:(1) According to the feeder structure and working principle, the feeder group is classified to the source containing plane linkage mechanism. The feeder body movement diagram, as well as the equivalent mechanical model is established and analyzed;, a three-dimensional solid model of feeder is established; with aid of 3D CAD software-PRO/E.(2) The 3-D model established in PRO/E is imported into ANSYS, with the rigid connection over ignored. then, the discharge device statics finite element analysis is carried out for the displacement and stresses under different work conditions, corresponding to the value of tilt angle. By comparison, it is found that when the tilt angleφ1 is 90°under work status two, the displacement and the equivalent stress of the walkng beam,shows the maximum level, so, the displacement, and the equivalent stress contours is given.(3) Using PRO/E, based on the 3-d model, kinematics analysis is carried out, which shows, in the vertical direction, the maximum acceleration is 0.325 mm/s2, while in the horizontal direction, 0.14 mm/s2. Compared to the gravity, the vertical inertia force is negligible, horizontal inertia force only affects the walking beam slightly. So, all inertia forces are ignored in dynamic analysis.(4) Dynamic analysis of the discharge device is done, thorough which, the top 10 order natural frequency and vibration model are both obtained, through the analysis of harmonic response, harmonic response curves of X, Y, Z direction are all received. The working frequency of the machine is far less than that of the first order natural frequency and vibration amplitude is small, so the desigh meets the job requirements, (5) Through static analyses and dynamic analyses, it's found out that the stepping beam system is the weak part of the discharge device under working. The parametric model of the walking beam is built in finite element analysis software ANSYS, with the wall thickness as the optimation object, aimed to control the vertical disaplacement within the maximum value allowed. in of to After the optimization, the maximum equivalent displacement of beam is reduced 5.899 mm, and the Maxim-um effectiveness,42.971MPa. After the optimization, the working performance will be improved.The looking into the work performance characteristics of discharge device of the the cathode copper plate automatic packaging line, as the main task of this thesis, provi des some theoretical reference for the design and development of subsequent similar equipment.