Continuous furnace is continuous production of welded pipe unit, therefore, welded pipe must be cut to length and times', with general to shear shearing machine can make the pipe end have crushed phenomenon, so most units are used to cut through.Figure 5-5 for the continuous rotary slide fly according to the machine.Its working principle is: motor drive installation is 3 turn on the saw blade guide 2 4, guide and crank pin 1 and 2 constitute a four bar linkage, two crank 1 after the constant speed rotation gear, the steel tube 5 in eccentric 6 above.As the rotation of eccentric steel pipe 5 6 lift can be eccentric, so make the saw blade in the lowest position 4, cutting can be realized.

     In order to change the specified length, should change the revolution of the crank 1.In order to make the movement of the steel tube and the level of the guide frame speed synchronized, crank radius should be adjustable.After the crank radius of gyration adjustment, to make the location of the center line of the sawing remains the same.

     the fly according to the frame through the screw to adjust the height.Eccentric 6 besides have the effect of checked steel pipes with circular saw blades, at the same time according to cut institutions.When the crank rotation 1 week, eccentric 6 is 1 and 1/ 2, 1/3, 1/4 turn four number to choose from.As a result, the fly according to the scale range: 2.75 ~ 4.12 m, 5.5 ~ 8.25 m;8.25 ~ 12.37 m;11.0 ~ 16.5 m.When the speed is not more than 300 m/min, can use this structure to fly, according to the cutting precision is + / - 6 mm.