Apparatus and method for efficiently preparing multi-directional continuous fiber-reinforced composite material

An apparatus for preparing a multi-directional continuous fiber-reinforced composite material, comprising:

• an electrostatic fiber bundle-splitting device;
• a powder spreading device;
• and
• a pre-press molding device;
• wherein the electrostatic fiber bundle-splitting device is configured to controllably split a fiber;
• the powder spreading device is configured to spread a powder;
• and the pre-press molding device is configured to cut the fiber and compact the powder;
• the electrostatic fiber bundle-splitting device comprises a hollow shaft, a fiber-splitting table and a rotating table;
• the hollow shaft, the fiber-splitting table and the rotating table are arranged coaxially;
• the rotating table is fixedly arranged on the hollow shaft;
• the fiber-splitting table is fixedly provided on a first support plate;
• an upper end of the hollow shaft is connected to the first support plate through a first mounted bearing;
• and a lower end of the hollow shaft is connected to a second supporting plate through a second mounted bearing;
• the rotating table is provided with a pre-pressing hole;
• and two sides of the pre-pressing hole are respectively provided with a pressing device configured to press a fiber bundle;
• the fiber-splitting table is fixedly provided with a first rack and a second rack;
• a first pressing plate is arranged on the first rack through a first spring;
• and a second pressing plate is arranged on the second rack through a second spring;
• a first conductive block is arranged below the first rack;
• a second conductive block is arranged below the second rack;
• two sides of the first conductive block are respectively provided with a first electromagnet;
• and two sides of the second conductive block are respectively provided with a second electromagnet;
• the pre-press molding device comprises an eccentric wheel, an eccentric wheel shaft, a push rod and a quick-change forming mold;
• the eccentric wheel is sleeved on the eccentric wheel shaft;
• the eccentric wheel shaft is configured to be driven by a power device;
• and the push rod is connected to a quick-change male die of the quick-change forming mold through a pin;
• the quick-change forming mold comprises the quick-change male die, a first sleeve barrel, a backing plate and a female die cavity;
• the first sleeve barrel, the backing plate and the female die cavity are all arranged in the hollow shaft;
• the female die cavity is a hollow cylinder;
• the backing plate is in a shape of boss, and comprises a cylinder at an upper portion and a base plate at a lower portion;
• an outer diameter of the base plate is smaller than an inner diameter of the hollow shaft;
• an outer diameter of the cylinder of the backing plate is the same as an inner diameter of the female die cavity;
• an inner cavity formed between the cylinder of the backing plate and the female die cavity is configured to accommodate a preform of the multi-directional continuous fiber-reinforced composite material;
• the backing plate is arranged in a groove on an upper end of the first sleeve barrel through transition fit;
• the female die cavity is arranged on a boss located in an inner cavity of the hollow shaft;
• and the inner cavity of the hollow shaft is in clearance fit with an outer wall of the first sleeve barrel;
• and
• the powder spreading device comprises a powder storage box and a ball screw module;
• the powder storage box is arranged on the ball screw module;
• a lower end of the powder storage box is provided with a powder outlet;
• a gear is arranged at the powder outlet;
• a gear shaft is arranged in the powder storage box;
• the gear is provided on the gear shaft;
• an addendum circle of the gear is in transition fit with an inner wall of the powder storage box;
• two sides of the gear closely fit the inner wall of the powder storage box;
• and a scraper is fixedly arranged on a rear side of the powder storage box.