LH50 Balloon External Longitudinal And Annular Seam Welding Machine

A. Usage and Main Action of LH50 Cylinder Longitudinal Annular Seam Welding Machine:

1. Main Function: This welding equipment fulfils welding on both annular seam and longitudinal seam on balloon workpieces, or cylindrical working parts;

2. Welding mode is by means of SAW welding (Submerged arc welding):

Test on annular welding on flange in LH50 model machine, at Wuxi JACK workshop: (Fig.1)

3. Work Motions of LH50 Longitudinal Annular Seam Cylinder Welding Machine:

Referring to photo as below:

Wuxi JACK exported to Russia LH50 model machine at exhibition: (Fig.2)

1)  Adjustment according to Cylinder Length: The mechanical moving side can move forward and backward, catering on different lengths of balloon working parts;

2)  Annular Welding: Revolve the secured pipes under required and adjustable welding linear speed, for welding the annular seam;

3)  Longitudinal Welding: The welding torch moves in adjustable welding speed, along length direction of barrel body, for welding the longitude seam;

4)  Secure Workpieces: The mechanical moving side can press end of the balloon by means of hand wheel, along axis direction of the balloon workpieces:

The 3 jaw chuck, firmly clamp flange/ ballon/ pipe workpiece, into welding mechanism of LH50 model Cylinder Welding Equipment: (Fig.3)

5)   Workpiece Revolve: The fixed side can drive the balloon workpiece into speed adjustable rotation, by means of one piece of three jaw chuck to clamp the balloon, which is installed at operating side.

B. Structure of LH50 Cylinder Annular Longitudinal Seam Welding Machine:

Mechanical structure design drawing of Wuxi JACK LH50 model machine: (Fig.4)

As shown in the above sketch, this machine has something in common with CNC Pipe Cutting Machine:

1. Mechanical Frame of LH50 Cylinder Longitudinal Annular Seam Welding Machine:

1) This unit is mechanical base bed, for fixing workpiece rotating and driving unit; Welding system;

2) The other side of mechanical frame is motor drive moving unit, for adjustment based on length of balloon;

3) Workpiece Laying: There are two sets of supporting rackets fixed with mechanical frame, for holding on and rotating workpiece during annular welding. It is similar to welding turning roll:

Two pieces of turning rolls for supporting balloon, in LH50 model machine: (Fig.5)

This mechanical frame is welding structure assembly, which is machined precisely after welding and annealing. It has high strength and anti-impact performance, guaranteeing on long term stable running of this welding fixture machinery;

2. Welding Torch Adjusting Unit of Cylinder Annular Longitudinal Seam Welding Machine:

1) Purpose: This unit is for driving welding torch movement, along longitudinal workpieces balloon body direction;

2)  Horizontal Movement: Drive on longitudinal movement of this unit is adopted with gear reducer and motor. Moving speed is adjusted with A.C. inverter. In case of longitudinal welding, this speed is also longitudinal welding velocity;

3)  Vertical Movement: Welding torch can be lifted up and descended down, driven under reducer and motor, depending on varied diameters of workpieces cylinder/ balloon;

4) Precise Position Control: This machine in installed with one set of 3 dimensional adjusting unit, for precisely managing on welding torch position, to make sure welding torch aiming on the welding seam all the while, guaranteeing proper and excellent welding quality;

5)  The welding torch manipulating unit, in Wuxi JACK LH50 model machine: (Fig.6)

3. Pipe Flange Revolve Mechanism:

1)  Revolving linear velocity of workpiece is controlled with A.C. inverter, making sure annular speed controllable continuously and stepless;

2)  Workpiece Revolve Transmission Chain Mechanism: Revolve driving motor → gear reducer → rotary support → three jaws chuck → Workpiece revolve;

4. Longitudinal Moving Unit in LH50 Cylinder Annular Longitudinal Seam Welding Machine:

1)  Function: According to different length of workpieces balloon, this unit moves to suit on end position of workpiece, and firmly fix the workpieces with bolts;

2)  Working Style: After the balloon is clamped, turn the hand wheel, to make the T type screw to clamp the balloon firmly into the machine;

3)  There is one piece of disk, and fixed with jack catch, to clamp workpiece balloon.

C. Technical Performance of LH50 Longitudinal Annular Seam Cylinder Welding Equipment:

1.  Conductive Device:

1) There is conductive device installed on revolving worktable, thus forming the conductive circuit for carrying out welding operation;

2) The conductive current capacity of this device is 1000A;

2.  SAW Welding System of LH50 Longitudinal Annular Seam Cylinder Welding Machine:

1) This machine is equipped with Chinese HUAYUAN made ZD7-1000IGBT welding power source and control panel;

2) The SAW welding system is equipped with one set of SAW welding wire feeder;

3) Location: Because of compact structure and dimension of the LH50 machine, the SAW welding source is placed on the ground, instead of on mechanical main of the machine;

4)  Control panel of SAW welding power supply is installed onto horizontal beam of the machine: (Fig.7)

5)  Welding wire feeder unit is installed onto motor drive moving carriage, and moves along with SAW welding torch;

SAW welding trial run on flange, during production and commissioning on Wuxi JACK LH50 model machine: (Fig.8)

3. Welding Flux Recovery Unit:

1)  SAW welding system of the machine is equipped with one set of welding flux recovery system;

2)  The motor power of welding flux recovery machine is 3.0kW;

3)   Welding flux loading capacity is 100kg.

D. Supply Range of LH50 Longitudinal Annular Seam Cylinder Welding Machine:

1. Mechanical Main Body:

This includes:

1) Stationary mechanical base bed, 1 set;

2) Horizontal beam and working table, 1 set;

3) Workpiece rotating driving unit, 1 set;

4) Moving and idle rotate unit, 1 set each;

5) 2 set of supporting rackets;

6) Welding torch move beam and drive unit, 1 set each;

7) Welding torch 3 dimensional adjusting unit, 1 set;

2. Welding System of LH50 Cylinder Longitudinal Annular Seam Welding Machine:

This includes one set respectively of:

1) Chinese HUAYUAN brand ZD7-1000IGBT model welding source;

2) SAW welding wire feeder unit, and control panel;

3) SAW welding flux feeding and recovery unit;

3. Electric Control System, control board, operating panel;

4. Technical Documents:

1) Quality Certificate;

2) Packing List;

3) Manual Book;

4) Electric Diagram;

5) Foundation Drawing.

E. Technical Parameters of LH50 Cylinder Longitudinal Annular Seam Welding Machine: