The chain drive and centralized heating mechanism of the plastic bottle blowing machine. The chain drive mechanism includes a chain and a number of transmission gears. A number of chain block components are fixed on the chain, which includes a chain block, and a fixed bottle is installed above each chain block. The heating seat of the blank, the chain transmission mechanism also includes several groups of reversing disc components. The angle of the chain reversing around the reversing disc component is 90° or 180°, in which the chain is reversed 180° to form two rows of parallel reversals. Chain.

A chain pliers includes a pliers body and a chain. One end of the chain is the connecting end connected to the pliers body, and the other end is a free end. At least one is provided between the pliers body and the chain or on the pliers body and the chain to fix or limit the chain. The magnetic adsorption member located on the clamp body is used to reduce or eliminate the invalid swing of the free end of the chain. The magnetic adsorption member can be arranged at the end of the free end of the chain. It is directly used to stabilize the excess part needed for binding.

The main structure of the separate chain cover of the setting machine is composed of a chain bearing seat, two chain bodies, a chain cover plate, a needle plate seat and a nut lock, which are embedded in the sprockets on both sides of the chain body. The column tip tube is sleeved on the branch posts on both sides of the chain bearing seat, and the upper end piece of the chain body is used to protrude the branch post to sleeve a separate horseshoe-shaped chain cover plate, which is sleeved on the needle plate seat that is perforated on both sides of the corresponding chain cover plate. On the pillars, a nut lock is integrated as a whole, so that the oil groove of the chain cover plate is used.