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**Folding Machine for Staggered Type Fin Evaporator**
**Product Composition and Structure**
The folding machine is designed for the production of staggered type fin evaporators. It consists of several key components, including a workbench, tension device, folding mechanism, length adjustment system, and an electrical control unit. All operations are driven by hydraulic cylinders, while the electrical system is controlled via relays.
I. The **workbench** is constructed from square tubing and welded steel plates. It is equipped with two pneumatic connectors and an air valve group to manage the compressed air supply.
II. The **tension device** includes a tension cylinder, a fixed plate, guide components, and tension dropheads. This system ensures that the pipes are properly stretched during the folding process.
III. The **folding device** comprises a folding cylinder, mounting plate, two reverse head racks, and diagonal forming heads. The diagonal forming cylinder drives the axles in the forming heads using a rack and pinion system. As the axles rotate in opposite directions, the pipes are bent at an angle, allowing for precise shaping.
IV. The **length adjustment device** is made up of a lead screw, feeding box or sliding box, base, bearing pedestal, locknut, and hand wheel. The bearing pedestal is integrated with the guide component, while the tension cylinder is mounted on the base of the feeding box. By turning the hand wheel, operators can adjust the distance between the tension dropheads and the folding heads to match the required product size.
V. The **electrical control system** uses Schneider brand low-voltage components, ensuring reliable and safe operation.
**Equipment Operating Instructions**
Before operating the machine, ensure that you have a thorough understanding of its structure, function, and safety procedures. Follow these steps carefully:
1. Adjust the distance between the tension dropheads and the folding heads using the lead screw according to the desired product length.
2. Place the pre-cut single chips into the 3R module.
3. Step on the foot pedal to activate the tension cylinder, which will lift the tension dropheads and stretch the pipes.
4. The folding cylinder then engages, driving the folding axles through the gear rack. This causes the ends of the single chips to rotate 60° and 120° in a 1:2 ratio, creating the necessary bend.
5. Once the folding is complete, the tension cylinder retracts, releasing the pressure on the pipes.
6. The folding cylinder also returns to its original position.
7. At this point, the finished workpiece can be manually removed.
**Equipment Maintenance**
To ensure the longevity and efficiency of the machine, regular maintenance is essential. Operators must be trained and familiar with the equipment before use.
1. Maintain the compressed air pressure within the range of 0.5–0.8 MPa.
2. Apply lubricating oil to the friction surfaces of the rack and guide box once per shift.
3. Similarly, lubricate the linear bearings and guide rods of the tension dropheads once per shift.
By following these guidelines, operators can maintain optimal performance and extend the service life of the folding machine. Regular checks and proper care are crucial for consistent quality and safe operation.