Cardboard conveyor device, cardboard conveying method and plate body structure

A cardboard conveying method, comprising:

• providing a cardboard conveyor device, wherein the cardboard conveyor device comprises at least an aspirator, a conveyor belt having holes on a surface of the conveyor belt, at least a plate body structure having wind shield structures, conveying rollers, at least a frame body and a cavity having an interior communicative to the aspirator, when the aspirator is activated to evacuate, the interior of the cavity forms a main negative pressure region, the plate body structure forms sub negative pressure regions, and the sub negative pressure regions are communicative to the main negative pressure region, thus providing a negative pressure to at least a cardboard on the conveyor belt facing to a conveying side;
• and
• activating the aspirator and a motor connected to the conveying rollers, so as to drive the conveying rollers to rotate, and to drive the conveyor belt to convey the cardboard on the conveyor belt facing to the conveying side, such that the main negative pressure region provides the negative pressure the cardboard on the conveyor belt facing to the conveying side via the sub negative pressure regions,
• wherein the cardboard conveyor device further comprises:
• at least a plate body controller, configured to control at least a portion of the wind shield structures to displace, so as to make the portion of the plate body structures do not form the sub negative pressure regions.

A plate body structure used in a cardboard conveyor device, comprising:

• a first plate body, wherein the first plate body has two air holes which penetrate the first plate body, so as to form wind shield structures, and the two air holes are respectively on at least two sides of each of the wind shield structures, wherein the two air holes are configured to make sub negative pressure regions of a cardboard conveyor device communicative to the main negative pressure region of the cardboard conveyor device;
• a second plate body, wherein the second plate body is formed to have first interval spaces which penetrate the second plate body;
• and
• a third plate body, wherein the third plate body is formed to have second interval spaces which penetrate the third plate body;
• wherein the first plate body is disposed between the second plate body and the third plate body, each of the first interval spaces is communicative to the corresponding two air holes, the sub negative pressure regions are formed while the first interval spaces are communicative to a main negative pressure region, and the second interval spaces are located between the corresponding sub negative pressure regions and the main negative pressure region, and communicative to the main negative pressure region and selectively communicative to the sub negative pressure regions, wherein the plate body structure is divided to have a main operation region, wherein the first plate body within the main operation region is fixed, and wherein the plate body structure is further divided to have two extension operation regions respectively on two sides of the main operation region, and the first plate body within the two extension operation regions is controlled by at least a plate body controller of a cardboard conveyor device to displace, thus prohibiting the sub negative pressure regions to be formed within the extension operation regions.