Pinch Roll & Laying Head for Wire Rod Production Line
1. Equipment Applications
The pinch roller and the laying head were set after the water-cooling system of the finishing mills. The pinch roll will grip the work piece and send it into the laying head to extend the wire rods into 1080mm spiral coils with rotation before they were sent to the cooling system.
2. Equipment parameters
2.1 Pinch Roll
- Input Dimension: Æ5.5~Æ16mm
- Input Speed: ~90m/s
- Pinch Roll Collar: Æ183/Æ87.32´72mm
- Maximum Grip Force: 3000N
- Maximum Line Speed: 115m/s
- Transmission Ratio: 0.1056
- Motor Type: Z4-250-12 DC
- Motor Power: DC160kW
- Motor Revolving Speed: 1500/2100 r/min
2.2 Laying Head
- Laying Head Model: Horizontal Laying Head, Slant Angle:15°
- Wire Rod Diameter: Æ5.5~Æ16mm
- Coil Diameter: Æ1080mm
- Maximum Laying Speed: 115m/s
- Transmission Ratio: 0.5820896
- Motor Model: Z4-280-42 DC
- Motor Power: DC250kW
- Motor Revolving Speed: 1000/1800r/min
2.3 Lubrication: Thin Oil Center Lubrication
Oil Pressure: 0.35MPa
Consumption: 200L/min
Oil Type: Mobil 525
Cleanness:10m
2.4 Pinch Roll Cooling Water: Water Pressure: 0.6MPa(Turbid Circulating Water)
Consumption: 10m3/h
2.5 Laying Head Cooling Water: Water Pressure: 0.2~0.4MPa(Clean Circulating Water)
Consumption: 10m3/h
3. The Structural Features of the Pinch Roll
Pinch roll and laying head are two separate parts which closed attached to each other. The pinch roll was set at the entrance of the laying head to grip the work piece and feed it into the laying head. The laying head then will extend the wire rods into 1080mm spiral coils and send them to the following cooling system.
The double roll pinch roll with a horizontal cantilever structure can clamp simultaneously by the power of the air cylinder. The pinch roll itself was powered by a DC motor and a 2-stage gear box. Two rolls were installed separately on two different swinging arms and driven by a cylinder-crank system to clamp. To make sure that the rolling piece would not be over-rolled, the clamp force can be preset and adjusted. The adjustable restrainer can guarantee two rolls stay untouched from each other with a minimum center distance between two rolls and a maximum opening degree. The body box of the pinch roll was welded and the gears and high speed filmatic bearings within were center lubricated by thin oil. The pinch roll will stay running during daily works and its speed was determined by the actual proceeding processes while the rolling piece it carries could be clamped by the head, the rare or the whole process.
The laying head is horizontal and tilted 15° downward. The main laying mechanism was one laying tube installed on the center shaft and the transmission system. The center rotating shaft was powered by a pair of bevel gears and one DC motor. The laying tube can rotate at a certain speed as preset to lay coils with regular diameter.
The center rotating shaft of the laying head contains two parts, the spinning head and the hollow shaft with a tube was inserted in. The cooling jacket was installed between the tube and the hollow shaft to avoid the heat transmission to the bearings attached to the hollow shaft.
The body box of the laying head was welded and the gears and bearings within were center lubricated by thin oil.
The spinning head was covered by the drum shell of the laying head for protection which also tilting downward. There are a 2-3mm space between the inner diameter of the protection shell and the external diameter of the spinning head to make sure that the spinning head can work. The top of the shell could be opened by two are cylinders to replace the laying tube. But the shell must stay closed while working.
For all other parts on the center shaft that rotate along with the shaft, they should all run a static balance test before installation and adjust the weight according to the circumstances. Then a 700r/min dynamic balance test with the accuracy above G2.5 degree. After the installation of the whole system, a test run is required to make sure the vibration on two different spots stay less that 4.5mm/s. The test spots are located on the two bearing caps at each side of the center shaft.
Because of the tilt, a block should be welded on the base foundation to immobilize the gear box of the laying head.
Before sale: design the suitable machine based on the specific demands
Medium sale:
1.Based on customer's demand to offer moderate quotation project 2.Accept customers to visit our factory
3.Help customer work out the schedule in china
After-sale:
1.On-site training personnel 2.Appoint special aftersale service staff, arrived at the scene guide clients installation and commission
Xi'an Weikeduo Electrical & Mechanical Equiment Co., Ltd.
With more than 20 years experience in metallurgical industry, The main business scope for the metallurgical machinery, high-speed gear box, hardened gear reducer. High-speed wire rod, bar, special steel rolling mill production line design, production, sales and installation; As well as for the aviation, steel, oil, electricity, coal mining machinery to provide intelligent re-manufacturing laser quenching, welding, cladding supporting processing, surface corrosion and wear-resistant alloy protective processor full set of technology development, services and applications. Crack detection of the equipment and spare parts, CMM measure and Gear detection. Products through the ISO9001 certification, the use of "Hangji" registered trademark of Shaanxi famous brand, with more than 10 patented technology, the establishment of a complete research and development, production and quality assurance system for high-tech enterprises.
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