Mattress packaging device and packaging method

A mattress packaging device, comprising:

• a first packaging device comprising a first folding and vertical sealing mechanism and two corner sealing mechanisms, the first packaging device being provided with a first station for accommodating a mattress, the first folding and vertical sealing mechanism being arranged on a rear side of the first station and configured for folding and vertically sealing a packaging material opening at rear end of the mattress, and the two corner sealing mechanisms being arranged respectively on a left side and a right side of the first station and configured for folding and transversely sealing a front corner and/or a rear corner of packaging material on two sides of the mattress;
• a second packaging device comprising two second folding and vertical sealing mechanisms and two first transverse sealing mechanisms, arranged downstream of the first packaging device, and provided with a second station for accommodating the mattress, the two second folding and vertical sealing mechanisms being arranged on a left side and a right side of the second station and configured for folding and vertically sealing the packaging material on two sides of the mattress, and the two first transverse sealing mechanisms being arranged on the left side and the right side of the second station and configured for transversely sealing the packaging material on two sides of the mattress, and
• a feeding device arranged upstream of the first packaging device, the feeding device being configured for pulling a roll of the packaging material to place the packaging material in front of the mattress, the feeding device comprising a pre-pulling assembly, the pre-pulling assembly comprising a first push-pull member and a second push-pull member, wherein the first push-pull member comprises a roller shaft, the roller shaft is arranged above the second push-push member and moves backward to pull the packaging material;
• the second push-pull member is arranged at an inlet of the mattress and comprises two push rods arranged on the left side and the right side, and the two push rods move forward to push the packaging material, the first push-pull member cooperates with the second push-pull member to enable the packaging material which is vertically arranged to form a concave shape and a length which are matched with those of the mattress, and the mattress is conveyed to pass through the feeding device to be wrapped with the packaging material, and enters the first packaging device and is placed at the first station;
• wherein the first folding and vertical sealing mechanism and the second folding and vertical sealing mechanism both comprise a vertical sealing assembly and a folding assembly which are oppositely arranged up and down, the folding assembly is movable up and down to push a lower edge or an upper edge of the packaging material to be attached to the mattress, and the vertical sealing assembly comprises a plurality of second sealing machines, and is movable up and down to push the upper edge or the lower edge of the packaging material to be attached to the mattress and vertically seal the packaging material;
• wherein the folding assembly comprises a pushing plate and a pressing plate, a plurality of first gaps are formed in the pressing plate at intervals, a plurality of second gaps are formed in the pushing plate at intervals, the first gaps and the second gaps are arranged in a staggered manner to form a structure in which the pushing plate and the pressing plate are able to be embedded into each other, the pushing plate and the pressing plate are movable up and down relative to each other, the pushing plate is configured for pushing the upper edge or the lower edge of the packaging material to be attached to the mattress and then being separated from the mattress, the pressing plate is configured for fixing positions of the upper edge or the lower edge after the upper edge or the lower edge of the packaging material is attached to the mattress, and the second sealing machines are arranged in a vertical direction of the first gaps;
• wherein a direction front refers to a direction of a conveyance of the mattress, a direction rear is an opposite direction to the direction of the conveyance of the mattress, directions left, right, up and down are based on the direction of the conveyance of the mattress, a direction transverse refers to a direction parallel to the direction of the conveyance of the mattress, and a direction vertical refers to a direction vertical in the direction of the conveyance of the mattress.