Z15~Z20 Automatic H Beam Assembly Machine with Tack Welding

Background: The Automatic H Beam Assembly and Tack Weld Machine in the first photo was taken on an automatic Wuxi JACK HB series H Beam Production Line exported to East Europe.

1. Application of Z15~ Z18 Automatic H Beam Assembly Machine:

1) Scope: Z15~ Z20 is a product group covering Z15, Z18, and Z20 models;

2) Purpose: For producing semi-finished workpiece of welded H Beam: Assembled and tack welded. The next equipment following the machine in the automatic H Beam Production Line is LHC H Beam Submerged Arc Welding Machine, as you can find from the first photo:

Welding H Beam fabricated: (Fig.1) 

3) Product Group: Here Z15 ~ Z20 refers to product group of automatic machine with self alignment (Automatic assembly) and automatic CO₂ tack welding, realized in the fashion of two sets of CO₂ gas shielded welding power source, controlled with PLC and inverter in the electric control system of the H Beam Assembly Machine: 

SAW power supply equipped with machine: (Fig.2) 

GMAW CO₂ welding power supply equipped with machine: (Fig.3)

2. Advantages of Automatic I Beam Assembly Machine:

As discussed in the previous section of Z15/ Z18/ Z20 manual operating mode machine, some of advantages with automatic machine are listed below but not limited to:

1) Labor Cost Saving: Operation of the automatic machine involves only one operator instead of two operators in manual machine;

2) Quality Assurance: Stable and consistent assembly and welding quality delivered compared with manual operation in the machine;

3) Requirement on Operator:  Less requirement on skill and experience of operator than manual mode machine, so it is more easy to find eligible operators;

This is the reason nowadays automatic machine with tack welding takes more and more share in the field of H Beam production in Steel Structure industry.

3. Electric Control System of Automatic H Beam Assembly Machine:

Electric system controls machine operation, and achieves automatic working mode. Below is brief on electric system of the Z15/ Z18/ Z20 models automatic machine:

1) PLC in Electric Control System of H Beam Assembly Machine:

a) PLC is the core element of control system in the machine: 

PLC in electric control system: (Fig.4) 

b) PLC program controlling on H Beam fitting up is compiled on the basis of process technology of the H machine:

Process technology flow of H Beam assembly: (Fig.5) 

c) PLC program is compiled on the basis of the above mentioned process flow in the automatic H Beam Assembly Machine;

d) Control Logic: During work period, PLC sends out command in the form of digital signal, controlling function elements acts accordingly, fulfilling tasks of positioning H Beam web and flange, FOR/ RVR of input and output drive conveyor, welding start, etc.;

e) Upgrade Conveniently: Change on machine control logic involves only compiling PLC program, instead of reworking or replacing hard wired relay circuit. This is the most conspicuous merit with PLC;

2) A.C. Inverter for Controlling Working Speed on H Beam assembly and tack welding: (Fig.6)

a) Working Way: Main drive motor, input and output drive conveyor of the automatic machine are all controlled with A.C. inverter, in unified adjustable speed;

b) Working Velocity Adjustment: There are eight sets of frequency are set in the A.C. inverter ahead of time (preset), corresponding with eight segments of required motor revolve velocity for the automatic machine;

c) Single Cycle Working Mode: When this Automatic H Beam Assembly Machine works under Single Cycle or Auto Cycle, output frequency of A.C. inverter is controlled with PLC;

d) Manual Working Mode: When this automatic machine works under Manual mode, output frequency of the inverter is controlled with a DIP switch on the machine operating panel;

e) Process Parameters: A.C. inverter used in these Z15/ Z18/ Z20 models Automatic H I Beam Assembly Machine has 0 ~ 400Hz output frequency range, 0.01Hz resolution, and consummate protection function;

f) Advantages: This makes sure that speed control of main drive and conveyor features in extensive range, smooth running and reliable work in the machine.

4. Technical Parameters of Z15 ~ Z20 Automatic H Beam Assembly Machine: