Sharpening is an indispensable preparation procedure before drawing die. According to the introduction, the rotary forging machine has been used in the coarse wire rolling abroad. It is also useful for electric rolling, that is, the two ends of the wire are clamped with electric pliers, and then the wire is stretched into a point and broken. At present, all the domestic use of rolling rod tip, mainly the reciprocating rotary old rolling machine and eccentric rolling machine cycle rotation. Another lever manual reciprocating small tip rolling machine, specially for 1 mm below the use of fine steel wire.
Fold and edit the structure of this section sharpening machine
The reciprocating rotary tip rolling machine is used for decades of old equipment, simple structure, suitable for small factories and production of low carbon steel wire.
This equipment is composed of three parts: transmission, frame and rolling stick. It is reduced by belt wheel and gear, and the big gear rotates about 60 times per minute. A short eccentric shaft is attached to the side of the big gear, which makes the rolling stick rotate around 50° through the arm and connecting rod. If the position of the arm and the connecting rod is changed, the Angle of the rolling rod can be changed.
This old fashioned bar is 100~120 mm in diameter and has 8~16 slots. According to the diameter of the wire, slot from large to small in order. Slot compression rate is: coarse steel wire about 20%, medium and fine specification about 15%. The slot is concentric and symmetrical with the outer circle.
The working principle of the sharpening machine is shown in the figure below.
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RPV6's new generation of high-performance pneumatic control valve is a new type of straight-stroke control valve developed according to German advanced technology. It is the current international advanced level product. The biggest difference between it and the pneumatic diaphragm control valve is:
A: The double-acting cylinder type actuator with spring has large thrust and high rigidity, sensitive action, high positioning accuracy and fast response. The upper and lower parts of the piston receive pure compressed air at the same time. After hard anodizing, the surface hardness increases, the surface never fades, and the interior never corrodes. It accepts air pressures up to 1.0MPA and is able to switch freely and close tightly even in the face of very high fluid pressure differentials.
When the air source is faulty, the spring can be automatically opened or opened by using the valve to ensure the safety of the system. The cylinders are made of die-cast aluminum alloy and are rugged, powerful, compact, lightweight and easy to handle compared to film actuators. Equipped with a double-acting valve positioner, it provides more precise control and greater stability.
B: Modular design, assembly and on-site maintenance are extremely convenient. Automatic center-to-center unthreaded seat. The seat of the traditional regulating valve is threaded onto the valve body. The design is complicated and the maintenance and replacement is very difficult. The RPV6 regulating valve seat is screwless. The fixing force of the seat is passed. The pressure applied by the bonnet and the fixed cage can be self-centered during assembly, ensuring the concentricity of the valve seat, achieving minimal leakage without grinding, and the replacement of spare parts is easy and precise.
The valve seat fixing cage can guide the fluid, buffer the fluid pressure, protect the valve body from fluid erosion, flashing and cavitation, and at the same time reduce noise. It can make maintenance easy, quickly reduce cost and significantly improve service life. .
RPV6's new generation of pneumatic control valves are advanced in technology and superior in performance. Exquisite in terms of high quality, high performance, low weight and easy maintenance, but also the advantages of single seat and cage sleeve valves, single seat and cage sleeves only need to replace the valve plug and seat And can be achieved. It has the characteristics of large adjustment, cutting, cutting pressure difference and small leakage, and it is the latest generation of control valve.
Ropp developed a new type of regulating valve, two features distinguishing the membrane control valve
It is reported that Ropp's new generation of regulating valve RPV6 is available, which makes this fully-featured regulating valve stand out in the world of control valves. It not only has the characteristics of other classified valves, but also reduces the weight and height by 30%. Favor! Now introduce its uniqueness: