The dual station hydraulic expansion and contraction unwinding machine is an important component for feeding the entire welded pipe production line. Its main function is to lift and tighten the steel coil, so that it can be safely and stably fixed on the turntable during high-speed feeding and storage, greatly improving the safety factor, effectively reducing production noise and labor intensity of workers. The equipment is equipped with two stations, making it convenient for one station to clamp the original components in advance while the other station is running, saving the traditional single station "one material, one loading" process, saving working time and relaxing the tense working atmosphere of workers, making the originally tense and tiring work easy and semi-automatic mechanical operation.
This unwinding machine is in the form of hydraulic expansion and contraction, which prepares for feeding while working. There is a hydraulic advance and retreat blocking device on the working side to prevent the material roll from loosening. The rotation is driven by a hydraulic motor, and the feeding is driven by a hydraulic cylinder pressing motor to rotate the material disc, so that the material head is led out, thus saving feeding time and labor intensity. Compared with other forms of unwinding machines, it also improves the success rate of the product, and has the characteristics of simple operation, low failure rate, and durability. The range of expansion and contraction for uncoiling is 430-530mm, and the range of expansion and contraction is 100mm. Large aperture raw materials can be adjusted by adding shims. Strip width 60-250, center height 1150.
Uncoiling shaft diameter: ￠ 150, inner hole ￠ 65, material 42CrMO. This material belongs to the spring steel category, with good strength, hardenability, and toughness. The expansion and contraction are completed by the sliding block driving the sliding sleeve. Bearing model: front self-aligning roller bearing 23130, rear 352026 bearing, expansion and contraction cylinder model: 140/60 * 105 long cylinder rod cylinder.
Material blocking form: The rotary table is driven by an oil cylinder to block the material as a whole.
Rotation form: The hydraulic motor drives the slewing support bearing to rotate 180 degrees
Positioning pin axis: hydraulic
Braking form: electric hydraulic
Material feeding form: hydraulic motor
Hydraulic motor: 1 BM3-500 J shaft (reversing, speed regulation)
Cylinder diameter 140, rod diameter 60, stroke 95 2 for expansion and contraction (direction change, pressure holding)
Cylinder diameter 63, rod diameter 35, stroke 100, for 1 positioning pin (reversing, pressure holding)
Cylinder diameter 80, rod diameter 55, stroke 950, 1 piece for moving material blocking (reversing, pressure holding, speed regulation)
Motor 7.5kw, oil pump displacement 25, vane pump
