The Design of the General and Sealing and Trimming Mechanism of the Pillow-style Candy Packing Machine
abstract：This topic is about the popular pillow--style candy packing machine .After analyzing the working theory , the features and the application of packing machine, on this base, it gives a corresponding calculation of the general and the cross sealing and trimming mechanism, completes a set of mechanical design process. In the general design, the emphasis is to decide the structure of the machine and the allocation of transmission ratio. The main theory of the transmission part is motors transmit the drive to the two gears which drives the main spindle and the spindle will transfer the movement and driving force. The cross sealing and trimming mechanism is composed of three parts, namely the sliding cross seal, the return spring and the cam which spins in work and causes the trimmer move intermittently. The cam uses flexible impact profile curve. With this kind of cam, it makes sealing device not only can reduce the impact but also ensure the sealing properties in the instant of sealing . According to the design described in this paper, the packing machine should be simple structure, steady operation and convenient maintenance.
Key words：packing machine；the main transmission；the cross sealing and trimming mechanism；spinning cam；return spring
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