What Is a Screw Feeder?

Feeder, also known as feeder, refers to the machine used to convey material. Commonly used in the automation, numerical control and precise conveying of granules, powders, flakes, belts and other materials. It is an indispensable transmission equipment for both light industry and heavy industry.

The traditional concept is that the feeder is a machine that moves and transports the material by means of the force of the movement of the machine. Modern feeders have undergone some changes, and advanced technologies such as high-pressure air and ultrasonic have been used in the feeding technology, but people still summarize these devices in feeder-type equipment. Feeding equipment with high automation include: moving head feeder controlled by computer, laser feeder, high pressure and computer feeder, etc. In addition, the foreign company produces a projection feeder, which is equipped with sensors and visual inspection devices on the feeding platform for scanning the outline of the material or projecting on the material line to guide the feeding arrangement. ^[1]

Feeders are generally classified into: high-speed roller feeder, new type feeder, NC roller feeder, NC feeder, punch feeder, NC punch feeder, NC roller feeder, NC automatic feeder. Air automatic feeder, cam-driven feeder Air automatic feeder (left and right offset shift type) Air automatic feeder (special floor type). ^[1]

Belt feeder

Belt feeder is a kind of conveying equipment with mature production technology and widely used. It has the characteristics of the most typical continuous feeder and has developed rapidly in recent years. Its main advantages: ^[3]

Belt feeder

The main disadvantages of the belt feeder are that the conveyor belt is easy to wear and its cost is large (accounting for about 40% of the cost of the feeder); a large number of rolling bearings are required; a discharge device must be installed during intermediate discharge; the ordinary tape type is not suitable for When the conveying inclination is too large. ^[3]

The belt feeder has been standardized, serialized, and constantly improved in performance, and new models have been introduced. ^[3]

Buried scraper feeder

Roller feeder

The disadvantages of the buried scraper feeder are: there are certain restrictions on the conveying distance and lifting height; the wear of the scraper chain and the machine slot is large, and the wear parts are mainly the joints of the chain, the bottom plate of the machine slot and the guide rail, especially the conveying precision The dust-like materials are more severely worn; the power consumption is large; it is not suitable for conveying materials with large viscosity, large suspension, large block size and large wear. ^[3]