Medium To Large Size General Purpose PR40 Pipe Welding Positioner

1.       The Usage of PR40 Medium Large duty Pipe Welding Positioner:

1)      PR40 is larger size of Pipe Welding Rotator, for welding cylindrical parts with diameter 80mm ~1200mm;

2)      PR40 Pipe Rotator for welding has the similar structure, degree of freedom, and working principle as PR24;

3)      Related Equipment with PR series Pipe Welding Positioner:

a)       Same as “Circumferential Welding Machine for Pipe” and “Pipe Assembly and Welding Machine”, this PR series Pipe Welding Positioner is also used for circumferential welding on pipe, tube parts. The difference lies in size and specific welding technology of workpiece;

b)      The reverse process technology equipment is “CNC Pipe Cutting Machine”.

2.       Technical Specifications of PR40 Medium Large duty Pipe Welding Rotator:

In the previous product section of PR24 small medium duty Pipe Welding Positioner, we give specification of PR series Pipe Welding Positioner in terms of motion. Below are technical parameters of PR series Pipe Welding Positioner:

1)      Torque of motions in PR series Pipe Welding Positioner:

For PR40 Medium Large duty Pipe Rotator,

a)       Revolving torque of the Weld Turning Roll is 3750N.m;

b)      Tilting torque of the Welding Turning Table is 7000N.m;

2)      Motor Power of the Medium Large duty Welding Turning Table:

For PR40 Medium Large duty Pipe Welding Positioner,

a)       Power of the Weld Turning Roll revolving motor is 750W;

b)      Tilting motor power of the Welding Turning Table is 400W;

c)       And motor power of the Weld Turning Roll downward press is 200W;

3)      Conductive Device in the PR series Pipe Welding Rotator:

a)       For this PR series downward stroke Pipe Welding Positioner, conductive device is installed on revolving unit of the Pipe Rotator, forming up conductive circuit for welding ground wire;

b)      Max. conductive current in the Welding Turning Table can be up to 1000A;

4)      Tilting (or Swing) Range of the Weld Turning Roll in the Pipe Welding Rotator:

One point for emphasis is, for PR40 Medium Large duty Pipe Welding Positioner, because of its large diameter of pipe, tube, and elbow, the tilting range of Weld Turning Roll is -35°~+35°, compared with -45°~+45° in PR24 Small Medium duty Pipe Welding Positioner.

3.       Drive and Transmission in PR series Pipe Welding Positioner:

On the basis of main units in the PR series automatic Pipe Welding Positioner introduced in PR24, we go on the topic of its drive and transmission for Weld Turning Roll:

Structure of PR40 electric Welding Turning Table of Pipe Rotator sees below sketch (PR24 is the same, just in smaller size: (Fig.1)

1)      Revolve (or Rotation) of Pipe, Tube, Elbow in PR series Pipe Welding Positioner:

a)  Revolving speed of Weld Turning Roll is VFD (Variable frequency drive), and controlled by means of inverter;

b)     Transmission chain in the Welding Turning Table is: Motor→Worm Gear reducer→Chain and sprocket→The two sets of bottom supporting Weld Turning Roll→Workpiece revolve (or rotation);

2)      Tilt (or Swing) of Welding Turning Table in automatic Pipe Welding Positioner:

a)     It is adopted with gear reducer, and has braking function. Which means, Weld Turning Roll and workpiece can be tilted and or to be stopped at any point within its stroke;

b)     There are limit switches fit at extreme positions of tilting (or swing); 

Running of Wuxi JACK Pipe Welding Rotator: (Fig.2)

c)     Transmission chain is Motor→ Gear reducer→ Pinion → Sector gear→ Workpiece tilt (or swing);

3)      Downward Press stroke of Weld Turning Roll in PR series Table Top Pipe Welding Positioner:

a)     Downward movement of upper Weld Turning Roll is driven with motor and gear reducer, and transmitted by way of leadscrew and nut;

b)     During working of Pipe Welding Rotator, leadscrew and nut guide sliding shaft moving up and down; 

Working Unit in Pipe Welding Rotator: (Fig.3)

c)     The press Weld Turning Roll is fit at the front end of the sliding shaft. In this way, the press Weld Turning Roll descends down toward the workpiece, and ascends up to be away from the workpiece, in this Pipe Welding Rotator;

d)     The sliding shaft is encircled in the stationary sliding bush of the Welding Turning Table.

4.       Technical Parameters of PR40 Medium Large duty Pipe Welding Positioner:

1)      With understanding on structure of the PR series universal Pipe Welding Positioner, we will proceed on operation of Pipe Welding Rotator in the next product section;

2)      Below are technical specifications of PR40 Medium Large duty Pipe Rotator for welding: