Processing production line special for finishing unit of nodular cast iron pipes

Abstract

The invention relates to a processing production line special for a finishing unit of nodular cast iron pipes, and belongs to the field of pipe fitting production equipment. In the prior art, chamfering, inner grinding and coating rolling need to be independently operated, so that the working period is long and the efficiency is low. The processing production line comprises a chamfering device, aninner grinding device, a coating rolling device and three constant-torque bearing devices, wherein the three constant-torque bearing devices are a No.1 constant-torque bearing device, a No.2 constant-torque bearing device and a No.3 constant-torque bearing device; the chamfering device, the inner grinding device and the coating rolling device are separately mounted on the three constant-torque bearing devices; the chamfering device is in driving cooperation with the inner grinding device; and the inner grinding device is in driving cooperation with the coating rolling device. According to theprocessing production line disclosed by the invention, the working efficiency is improved, and investment of labor cost is reduced, so that after pipe fittings are assembled, the sealing performanceof the pipe fittings is high, the rolled coating on the outer wall of the pipe fittings is more uniform, the service life of the pipe fittings is prolonged, and the inner walls of the pipe fittings are ground to be more smooth and flat.

Description

Technical field [0001] The invention relates to a processing production line dedicated to a finishing unit for ductile iron pipes, belonging to the field of pipe fitting production equipment. Background technique [0002] Ball-milled cast iron pipes undergo a series of treatments, such as chamfering, internal grinding and paint rolling, in order to extend their service life and improve sealing performance. Currently, there is no equipment that can chamfer, Internal grinding and paint rolling realize integrated operation. In the prior art, chamfering, internal grinding and paint rolling need to be operated independently, with a long working cycle and low efficiency, and it is difficult to achieve continuous production in the process of independent operation. Independent operation of each process can not achieve the desired effect, such as irregular chamfering, uneven internal grinding, uneven paint rolling, etc. [0003] In view of this, a pipe chamfering machine is disclosed in th...

AI Technical Summary

Problems solved by technology

The above comparison file can only realize the function of chamfering, not the simultaneous realization of functions such as internal grinding and rolling paint, and the functional efficiency is low

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