The concept of the bottom structure of the nugget

The bottom structure of the nugget is an important part of the mining method. It refers to the organic matching part of the mine roadway, the mining roadway and the mine roadway from the stage transportation level to the bottoming level. It can make the ore mined in the mine or the pillar through these roadways, use the ore's own weight, or the ore mining equipment to be transported into the transport level of the mine car.

Receiving part of the mine - from the roof of the electric roadway to the bottom of the roadway

The mining part - transporting the roof of the roadway from the stage → the roof of the electric road

The mining part - transporting the floor of the roadway from the stage → the roof of the transportation roadway



Needle Roll Punching Machine

Our company specializes in film punching needle rollers, packaging film punching needle rollers, aluminum foil punching machines, copper foil punching machines, product quality and processing technology reliability, stability is at the domestic advanced level, and can be produced according to customer requirements A special specification of needle roller and needle ring products. Welcome customers to come and inquire.

Needle roller, also known as needle cylinder. A metal cylinder with steel needles planted on the surface. It is installed in the drafting zone for controlling and carding fibers. It is used on spun silk and wool spinning roving frame, carded wool spinning frame, spun spinning and shaft spinning frame. The main body of the needle roller is a copper cylinder with small holes drilled on the surface and steel needles are planted in the holes. Both ends of the cylinder are equipped with a flange, the surface of which is slightly higher than the needle tip to protect the needle tip from damage. The main parameters of the needle roller are: bottom diameter, outer diameter, needle width, needle height, needle density, needle angle and needle number. In order to adapt to the processing of different types of fibers, the small carding roller on the rotor spinning machine has the saw teeth replaced with needles, also called needle rollers.

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