With the enhancing of single-line granulation production capacity and the range of melting index, the diameter of granulation die plate and granulation band width increase, as well as the number of holes. They will make materials run through the die plate faster, and lead to the increase in elastic deformation of the die plate. At the same time, the axis of the die plate is uneasy to completely coincide with the power cutter shaft axis. These will cause unequal contacts between the edges of cutters and the cutting surface of the die plate. This is prone to decrease granulation quality, such as increasing waste product. Furthermore, (e.g. for high melting index plastics) it will make pad knife, wrapped around a knife, and even wax irrigation.

 

DESIGN PERCEPTION OF THE FOLLOWING CUTTER HOLDER

 

The concept to design the following cutter holder is: Ensure driving shaft of cutter holder to have sufficient driving torque, enable the cutter holder to achieve axial swing under a certain external force by the choice of connection mode or joining materials.

Cutter holder designed and produced in our company with independent intellectual property rights is characterized by a special flexible rubber as the transmission of tensional and axial forces. A special design ensures normal work when driving force of axis goes beyond the capacit limit of the special rubber. So, it can not only meet the requirements of the scope of random moving, but increase the service life of cutter holder as well. At the same time, it can avoid degloving in case of overloading, and system wax irrigation etc.

 

 

FOLLOWING CUTTER HOLDER

 

 

New type of Following Cutter Holder can ensure the homogeneity of the contact distance between the cutter edge and the cutting surface of the die plate and significantly improve the pelletizing quality. This will make its service life and reliability superior to the similar products in France and Germany and can meet the demand of granulation for high melting index.

The company repaired or manufactured nearly 20 sets of cutter holder for Lanzhou Petrochemical Co., Ltd., Dushanzi Petrochemicals Co., Ltd., Zhongyuan Ethylene Co., Ltd., Tianjin ethylene Co., Ltd., Fujian Petrochemical Co., Ltd., Sinopec Qilu, Panjin Ethylene etc., and get good results.