Flattening-realizable file rack and assembling method thereof

A flattening-realizable file rack obtained by the following steps:

• (S1) gluing:
• coating a glue on a first one side coated board body, a second one side coated board body, a third one side coated board body, a fourth one side coated board body, a fifth one side coated board body, a sixth one side coated board body, a seventh one side coated board body and an eighth one side coated board body respectively;
• (S2) grey board pasting:
• pasting grey boards on surfaces of the first one side coated board body, the second one side coated board body, the third one side coated board body and the eighth one side coated board body coated with the glue;
• (S3) folding:
• respectively folding a third connecting strip, a fourth connecting strip, the fourth one side coated board body, the fifth one side coated board body and the sixth one side coated board body to form folded edges;
• (S4) folding:
• folding a first connecting strip, a second connecting strip, a fifth connecting strip and the eighth one side coated board body respectively;
• and
• (S5) forming:
• folding, pasting and assembling a second connecting diaphragm, a first connecting paper lug, a second connecting paper lug, a first connecting diaphragm and a ninth one side coated board body respectively, thereby forming the flattening-realizable file rack,
• wherein the flattening-realizable file rack comprises the first one side coated board body, wherein the second one side coated board body is formed at a left side of the first one side coated board body, and a fold is formed at a joint between the first one side coated board body and the second one side coated board body;
• the third one side coated board body is formed at a right side of the first one side coated board body, and a fold is formed at a joint between the first one side coated board body and the third one side coated board body;
• the fifth one side coated board body is vertically formed at a top end of the first one side coated board body, and a fold is formed at a joint between the fifth one side coated board body and the first one side coated board body;
• the fourth one side coated board body is formed at a left side of the fifth one side coated board body, a bottom end of the fourth one side coated board body is connected with a top end of the second one side coated board body for forming, and a fold is respectively formed at a joint between the fourth one side coated board body and the second one side coated board body as well as a joint between the fourth one side coated board body and the fifth one side coated board body;
• and the sixth one side coated board body is formed at a right side of the fifth one side coated board body, a bottom end of the sixth one side coated board body is connected with a top end of the third one side coated board body for forming, and a fold is respectively formed at a joint between the sixth one side coated board body and the third one side coated board body as well as a joint between the sixth one side coated board body and the fifth one side coated board body;
• wherein the seventh one side coated board body is formed at left side of the second one side coated board body, and a fold is formed at a joint between the seventh one side coated board body and the second one side coated board body, and a first connecting paper lug is vertically formed at a bottom end of the seventh one side coated board body;
• the eighth one side coated board body is vertically formed at a top end of the seventh one side coated board body, and a fold is formed at a joint between the seventh one side coated board body and the eighth one side coated board body;
• a ninth one side coated board body is vertically formed at a top end of the eighth one side coated board body, and a fold is formed at a joint between the eighth one side coated board body and the ninth one side coated board body;
• and the third connecting strip is obliquely formed at a left side of a top end of the second one side coated board body, and a fold is formed at a joint between the third connecting strip and the second one side coated board body.