LYGL-350D Automatic Stirrup Cage Welding Machine Supports High-Volume Rebar Fabrication in Construction Plants

When construction plants need to produce large volumes of reinforcement cages without sacrificing accuracy, the right equipment makes all the difference. The stirrup cage welding machine LYGL-350D from Zhongji Luyuan is a fully automatic, PLC-controlled system designed to meet exactly that demand. Built on a high-strength steel frame and operated by just one technician, it produces 24 sections per 10-hour shift at 6 meters per section, making it a practical answer for contractors who need speed, consistency, and lower labor overhead on every shift.

Understanding the LYGL-350D Stirrup Cage Welding Machine

The LYGL-350D is a machine that makes reinforcing bars automatically. Gas-shielded welding, PLC code, and a touch screen interface are all built into it. If the saddle bar is 6 mm in diameter, it can handle it. If the main bar is 10 mm in diameter, it can also handle it. Three to six main bars can fit in each cage. The cages can be up to 6 meters long and 150 mm to 350 mm wide. It can be made in different shapes and lengths to fit the project.

Core Technical Specifications

The machine gets its power from 380V, 50Hz, three-phase. It can put out a total of 14.5 KW of power and 100 KW of power for welding. It stays at or below 0.8 MPa for the pressure of the air supply. As is common for prefabrication plants, the size is 16 m × 3 m. This doesn't mean that the floor plan needs to be changed much.

Cage Shape Compatibility

The LYGL-350D can work with stirrups that are round, square, or any other shape. There must be at least 30 mm of space between the stirrups and 100 mm of space between the main bars. This range has column stirrup cages, beam hoops, and other building reinforcements that can be used for a wide range of structural engineering projects.

Control System and Interface

Users can quickly change parameters with the PLC and touch screen control system, even if they don't know much about programming. During each turn, the system automatically handles the welding processes, rotation speed, and pitch spacing. This means that every production run is the same.

Benefits of Using the LYGL-350D in High-Volume Rebar Fabrication

The cost of labour in the US building business has been slowly rising for some time now. The Bureau of Labor Statistics says that jobs in speciality trade contracting are getting better than they were last year. When cages are made automatically, each shift doesn't need as many skilled welders. This machine helps make things in these main ways:

• Single-operator efficiency: From the control center, one expert watches over the whole welding process, doing work that used to need three to four workers at each station.
• High output rate: In a 10-hour shift, the machine makes 24 finished cage parts, each 6 meters long. This means that project managers can reliably plan their daily output.
• Firm, uniform weld joints: gas-shielded welding makes ties that are tight and won't rust at every bar crossing. This makes it less likely that the structure will be rejected in the field or need to be fixed.
• One-pass forming: Each stirrup cage is made in a single, continuous pass. This makes sure that it has exact measurements, standard angles, and a square shape that won't change during shipping or installation.

Plants that handle rebar have had problems with poor hand welds and long cage turnaround times for a long time. The Stirrup cage welding machine LYGL-350D takes care of both of these problems right away. Bridge builders and metro builders usually have a set amount of time to do their work. If the machine does the same amount of work every shift, it takes away one of the most important things that go into making schedules.

Material Waste Reduction

No extra work is needed to cut or fix the cages because they all come out of the machine with the same shape and leg spacing. When fewer cages are turned down, it costs less per job to write off the materials.

Diagnostic and Uptime Features

The PLC has built-in troubleshooting tools that let you know when something is wrong with the system before it stops all work. People who work in repair won't have to miss whole days of work because of unplanned downtime. Instead, they can fix issues during breaks.

Comparison and Market Positioning of the LYGL-350D

When purchasing rebar cage welding tools, teams usually look at three things: the speed of output, the accuracy of the measurements, and the cost of running the machine in the long term. When conditions are right, manual welding stations can make four to six cage sections per shift, while semi-automatic systems can make an average of fifteen to twenty sections. With a recorded output of 24 parts per 10-hour shift, the LYGL-350D is clearly in the top tier of this type of equipment in terms of efficiency.

Accuracy vs. Manual Methods

When you put together a cage by hand, the stirrup spacing, weld penetration depth, and roundness of the cage can be different. With automated pitch control and gas-shielded welding, the LYGL-350D gets rid of these variables, making cages that are square, not deformed, and ready to install without any adjustments.

Long-Term Cost Analysis

A group of people working together to weld by hand is replaced by a single person running this machine. During a 12-month production cycle, the difference in the amount of labour used usually covers a big chunk of the cost of buying new equipment. The total cost of ownership is lower than maintaining a manual fabrication line at the same output level because less material is wasted and more work is done again.

Industry Trust and Track Record

The company Zhongji Luyuan was set up in 2016 with 50 million yuan in registered capital. It works with China Railway, China Railroad Construction, China State Construction, China Communications Construction, and China Nuclear Power Construction Corporation. The business has sent goods to almost 100 different countries and regions, such as South Korea, Malaysia, Thailand, Kazakhstan, Israel, and South Africa.

Practical Guidance for LYGL-350D Operation and Maintenance

Setting up the Stirrup cage welding machine LYGL-350D correctly is the first step to getting the best performance from it. Before each shift, operators should make sure that the air supply pressure is within the range of 0.8 MPa and that the settings for the rebar width on the touch screen interface match the batch that is being worked on.

Daily Operation Workflow

Place the main bars into the slots for their holders, use the touch screen to set the cage length and stirrup spacing, and then start the automated welding cycle. No more work needs to be done by hand during the run; the machine does the rotating, feeding, and welding. One person checks the quality of the product and reacts to any PLC problem alerts.

Routine Maintenance Schedule

Every 500 hours of use, the welding contact points and wire feed nozzles should be checked. The equipment manual should be used to figure out how often to grease the drive parts. Pitch precision is kept up over long production runs by regularly calibrating the spin encoder.

Common Troubleshooting Points

Check the shielding gas flow rate, the condition of the contact tip, and the wire feed tension as soon as the weld quality drops during the run. Most breaks in production are caused by worn-out parts rather than mechanical problems. This keeps repair times short and part costs low.

Procurement and Support for LYGL-350D Welding Machines

As well as taking straight orders for big amounts of goods, Zhongji Luyuan also works with wholesalers in the area to assist teams that are buying goods in other countries. If you need cages that are a certain width or longer than 6 meters, you can change how the equipment is set up to meet those needs.

Warranty and Certification

There is a warranty on the units and paperwork that shows they meet CE and ISO 9001 standards. Most state-owned building groups and EPC companies that follow strict quality control rules will be able to use this.

After-Sales Support

The business has a technical support team that can help with setup, training users, and fixing problems from afar using an Internet of Things-connected diagnostic module. Lead times for parts that affect output don't get too long because extra parts are kept in stock.

Delivery and Implementation

At the order stage, production and delivery dates for the Stirrup cage welding machine LYGL-350D are set based on the project schedule. The operations team at Zhongji Luyuan is in charge of export paperwork and shipping plans to make sure that equipment gets to its destination on time so that it can be put to use on the dates that were planned.

FAQ

What rebar diameters does the LYGL-350D support?

The machine accepts stirrup bar diameters from φ6 mm to φ12 mm and main bar diameters from 10 mm to 20 mm, supporting 3 to 6 main bars per cage in triangular, rectangular, or special-shaped configurations.

How many operators does the machine require?

One trained technician can run the entire production cycle from the PLC touch screen console. This single-operator setup is one of the primary factors that reduces labor overhead compared to manual cage assembly methods.

What is the typical production output per shift?

Under standard operating conditions, the machine produces 24 cage sections per 10-hour shift, with each section measuring 6 meters in length. Cage length is customizable based on project specifications.

Does the LYGL-350D support remote diagnostics?

Yes. The system includes an IoT module that allows the Zhongji Luyuan technical support team to assist with remote troubleshooting and software updates, which reduces the need for on-site service calls during minor operational issues.

What quality standards does the equipment meet?

The LYGL-350D is produced under ISO 9001 quality management standards and supports CE certification requirements, meeting international procurement standards for construction equipment used in infrastructure projects.

Request a Quote for the LYGL-350D — Contact Zhongji Luyuan Today

People who work at Zhongji Luyuan are ready to answer your technical questions, help you figure out how to set up your Stirrup cage welding machine LYGL-350D, and talk to you about prices for big orders for your project. The sales team can be reached at sales2@shandongluyuan.com or at shandongluyuan.com to get a full product sheet and price quote.

References

1. American Concrete Institute. ACI 318-19: Building Code Requirements for Structural Concrete. American Concrete Institute, 2019.

2. Bureau of Labor Statistics, U.S. Department of Labor. Occupational Employment and Wage Statistics: Construction and Extraction Occupations. U.S. Government Publishing Office, 2023.

3. Fédération Internationale du Béton (fib). fib Model Code for Concrete Structures 2010. Ernst & Sohn, 2013.

4. Concrete Reinforcing Steel Institute. CRSI Design Guide for Reinforced Concrete Structures. Concrete Reinforcing Steel Institute, 2021.

5. International Organization for Standardization. ISO 9001:2015 — Quality Management Systems: Requirements. ISO, 2015.

6. Precast/Prestressed Concrete Institute. PCI Design Handbook: Precast and Prestressed Concrete, 8th ed. Precast/Prestressed Concrete Institute, 2017.