초록 ▼

A method and apparatus for cutting spiral pipe is disclosed. The pipe cutting apparatus includes a driving mechanism that imparts rotation to a knife located inside the spiral pipe via a drive element, such as a drive shaft. The method includes forming a spiral pipe from a strip of material received

A method and apparatus for cutting spiral pipe is disclosed. The pipe cutting apparatus includes a driving mechanism that imparts rotation to a knife located inside the spiral pipe via a drive element, such as a drive shaft. The method includes forming a spiral pipe from a strip of material received at a forming head of a spiral pipe former, engaging a driving mechanism attached to a first knife positioned substantially inside the inner circumference of the pipe forming head to impart rotation to the first knife, and cutting the spiral pipe with the first knife by bringing a second knife positioned substantially outside the outer circumference of the forming head into overlapping contact with the first knife.

대표청구항 ▼

[ I claim:] [1.]1. A pipe cutting apparatus for cutting spirally formed pipe, the pipe cutting apparatus comprising:a forming head for receiving a strip of material and coiling the material into a spiral pipe, said forming head having an inner and outer circumference;a first knife positioned substan

[ I claim:] [1.]1. A pipe cutting apparatus for cutting spirally formed pipe, the pipe cutting apparatus comprising:a forming head for receiving a strip of material and coiling the material into a spiral pipe, said forming head having an inner and outer circumference;a first knife positioned substantially inside the inner circumference of said forming head;a driving mechanism attached to said first knife, said driving mechanism comprising:a motor; anda drive element coupled to said motor, wherein said drive element is capable of imparting rotation to said first knife responsively to said motor; anda second knife positioned substantially outside the outer circumference of said forming head, wherein said second knife is configured for movement into overlapping contact with said first knife to cut the spiral pipe.