Feature
- Adopt patent electrode welding head developed by our company and it can improve the life-time of the electrode to reduce customers’cost
- Using an oil tank with wave bending,and the wave crest interval is adjustable 190-210mm
- The main unit of truss adopts integrated structure and is suitable for different height truss(Height of truss is 70-350mm adjustable)
- The device power is provided by hydraulic station,which can provide it enough power to assure the welding quality.At the same time,it provides sufficient power for the feeding clamping system
- to ensure that the steel bars will not move during the feeding process,and the length of the truss is guaranteed
- Friendly Ul makes the operation easier and PLC is used as CPU having high degree of automation
| Name | Parameters |
|---|---|
| Rated Power | 3x250kVA |
| Power Supply | 380V 50HZ |
| Number of Phases | Three phase-four wire |
| Load Duration Rate | 20% |
| Air Source Pressure | 0.6-0.8MPa |
| Cooling Liquid Flow | >150L/min |
| Cooling Liquid Temperature | ≤30℃ |
| Device Dimension | 39.4mx4.4mx3.3m |
| Oil Pressure | 7-11MPa |
| Height of Truss | Straight pediform 70-350mm. bending pediform70-300mm |
| Wave Crest Spacing | 190-210mm adjustable (without blanking) |
| Wave Wire Diameter | Φ4-8mm(plain bar) |
| Upper Chord Wire Diameter | Φ6-14mm |
| Lower Chord Wire Diameter | Φ6-14mm |
| Lower Chord Diameter | 12m/min (changing with the height) |
1. Steel Truss Welding Machine XHJ-350 Structure
The XHJ-350 steel truss welding machine is mainly divided into six parts, as shown in Figure 1:
- Uncoiling rack
- Straightening mechanism
- Main machine
- Discharge rack
- Hydraulic system
- Electrical system
- Water cooling system
Figure 1: Truss Welding Machine
1. Uncoiling Rack
The uncoiling rack consists of a base, uncoiling disc, brake mechanism, guiding mechanism, material shortage detection, and tension detection. Bearings are installed between the base and the turntable to enable flexible rotation during operation. The brake mechanism adjusts the flexibility of the turntable when there is no material output, preventing the coiled steel from unwinding automatically. Material shortage and tension detection are used to stop the machine and trigger an alarm when there is a material shortage or blockage.
2. Straightening Mechanism
The straightening mechanism includes a base, frame, straightening wheels, and guiding mechanism. The straightening wheels include horizontal and vertical straightening wheels. Some wheels are installed on sliders, allowing them to be adjusted to the correct position for straightening the steel bars.
3. Main Machine
The main machine is the core functional part of the welding machine and includes the following components:
- Tensioning component: Adjusts the tension of the three rebar strands. It serves as an auxiliary regulator to balance the tension when the product is not straight.
- Clamping and feeding component: The main feeding part for continuous processing, clamping and feeding five rebars forward.
- Wave-forming component: Bends small round steel into a wave-shaped diagonal bar and also helps position the upper welding machine for welding the upper chord and diagonal bars.
- Upper welding component: Welds the upper chord and the upper ends of the two wave-shaped diagonal bars together. A fine-tuning knob adjusts the relative height of the upper chord to the diagonal bars.
- Lower welding component: Welds two lower chords to the lower ends of the diagonal bars. It can be adjusted up and down to meet different welding height requirements.
- Limiting component: Prevents the rebar from deviating during the welding process and corrects bending and twisting when the product is not straight. The limiting bar can be adjusted up and down, and the left and right stoppers can be adjusted freely.
- Auxiliary feeding component: Synchronizes with the clamping and feeding component via a linkage to prevent the rebar from bending during feeding.
- Foot bending component: Bends the lower ends of the diagonal bars into feet. The height can be adjusted to coordinate the front and rear processing heights. The guide wheel at the front end can adjust the width of the bent feet.
- Shaping component: Adjusts the width of the product, with the upper left and right limit blocks positioning the center of the upper part of the product.
- Shearing component: Cuts the product according to the set length. The number of joints can be set on the control panel. The cutting point must align with the upper chord weld to ensure the diagonal bars are cut simultaneously.
- Discharge component: After the product is processed to the set length and cut, it is sent to the discharge rack. The clamping head is driven by a cylinder and requires compressed air to function, while the pushing power comes from an electric motor and synchronous belt transmission.
Figure 2: Truss Main Machine
4. Discharge Rack
The discharge rack includes a frame, a flipping mechanism, and an extended frame. The frame height can be adjusted as needed, and the flipping mechanism is driven by a cylinder.
5. Hydraulic System
The hydraulic system consists of a hydraulic station, hydraulic valves, regulating valves, accumulators, cylinders, oil pipes, and a water cooling system. The rated hydraulic working pressure is 8-9MPa.
6. Electrical System
The electrical system includes a high and low voltage distribution cabinet and an operation control console. It also includes pneumatic circuits for material discharge and handling.
7. Water Cooling System
The water cooling system includes transformer group cooling, upper and lower electrode cooling, and copper block cooling. It uses a water distributor for flow control, and a water flow monitor ensures proper operation to prevent damage to the equipment.
8. Safety Mechanism
The machine has a push-button switch for starting, ensuring safety in case of improper operation by employees. The cooling water for the main machine is completely isolated from the high-voltage power source, ensuring operational safety. Warning labels are affixed in high-voltage or dangerous areas of the equipment.
9. Main Technical Parameters of the Truss Machine
| Parameter | Range |
|---|---|
| Foot bent truss height | 70mm-300mm |
| Straight truss height | 70mm-350mm |
| Truss length | 2000mm-12000mm |
| Straight truss width (Ф4.5 bent bar) | Maximum 80mm |
| Bent bar spacing | 190mm-210mm |
| Diameter of steel bars | Upper chord: 8mm-12mm, Lower chord: 6mm-12mm |
| Rated operating speed | 12m/min, varies with height |
| Installed capacity | 315KVA |
Equipment Composition and Advantages
Curved Straightening System
Compared to the traditional straight-line system, the curved straightening system effectively corrects axial deviations in the rebar, producing smoother and better-aligned products.
Imported Electrical Components
The machine uses an independent electrical cabinet to protect the components from dust and oil, reducing failure rates. It is equipped with Schneider electric components and high-performance servo motors and drives, ensuring stable performance.
Automatic Material Feeding Mechanism
The machine uses wireless remote technology for material feeding, allowing a single operator to manage the entire process easily.
Dual Servo with Dual Planetary Gear Motor
The machine utilizes high-performance servo motors with efficient planetary gear motors, resulting in low maintenance costs and minimal energy loss.
Two-Wheel Reverse Feeding Device
This device is used for stirrup production, allowing for precise and flexible reverse feeding over longer distances.
Independent Control Console
The control console includes knobs for adjusting feed speed, bending speed, and other parameters. It features a 10-inch display with a user-friendly interface for task scheduling, circuit monitoring, and graphic editing.
Centralized Oil Supply Device
A centralized oil supply system equipped with a pneumatic oil gun simplifies maintenance and reduces wear on key components.
Automatic Stirrup Collection Device
The machine can produce double-line 10mm stirrups and straight bars, with an automatic collection hand to replace manual labor. It also features a 6-meter automatic receiving rack for straight bars and stirrups.
Contact us to download our latest truss welding machine catalog.
