High-resilience pu spring sponge and preparing method thereof

A preparing method of a high-resilience PU spring sponge, comprising:

• S1:
• a mold preheating and mold pretreatment step:
• cleaning an interior of a mold to remove impurities on a surface of the mold;
• so that the impurities are prevented from attaching to a surface of the high-resilience PU spring sponge and affecting a quality of the high-resilience PU spring sponge after curing and forming;
• turning on a power supply to preheat the mold;
• stopping heating the mold and maintain a predetermined temperature for later use after the mold is preheated to the predetermined temperature;
• mounting high-strength springs one-to-one on mounting columns uniformly arranged on a top surface of the mold;
• magnetically fixing each of the high-strength springs by a magnetic mechanism arranged on a top end of a corresponding mounting column of the mounting columns;
• wherein the mold comprises a mold top cover and a lower mold;
• S2:
• a material mixing pretreatment step:
• adding raw materials into a mixer according to a predetermined proportion;
• fully mixing the raw materials in the mixer to obtain a material A for later use;
• adding a material B into the material A in the mixer;
• mixing the material B with the material A at high speed to obtain slurry for later use;
• S3:
• a slurry introducing step:
• introducing the slurry prepared in the step S into the mold pretreated in the step S through a pump machine and a guniting head;
• covering the mold top cove;
• enabling the mounting columns arranged on the mold top cover being one-to-one attached to perforated columns on a bottom frame of the lower mold;
• enabling the perforated columns being one-to-one embedded in the mounting columns;
• locking the mold top cover by a locking] workpiece to fix and close the mold;
• wherein an amount of the slurry introduced into the mold is matched with a volume of the high-resilience PU spring sponge;
• S4:
• a slurry foaming curing and demolding step:
• foaming the slurry introduced into the mixer in the step S;
• leaving foaming slurry stand still and waiting for curing;
• disassembling the locking workpiece after the curing is completed;
• staring a lower air cylinder to drive the lower mold to descend, so that the perforated columns are separated from a sponge main body;
• separating the sponge main body from the mounting columns arranged on the mold top cover, so that first grooves are formed on the sponge main body and second grooves are formed on a sponge bottom surface of the sponge main body;
• wherein positions of the first grooves are corresponding to positions of the mounting columns, and a size of each of the first grooves is same as a size of each of the mounting columns;
• the high-strength springs are one-to-one embedded into the first grooves to form an integrated structure with the sponge main body;
• since the mounting columns are one-to-one attached to the perforated columns after the mold is closed, each of the first grooves is communicated with a corresponding second groove of the second grooves;
• and
• S5:
• a natural curing and finished product processing step:
• taking out a cured sponge obtained in the step S, placing the cured sponge in a predetermined position for standing treatment;
• natural curing the cured sponge in a natural environment;
• obtaining the high-resilience PU spring sponge and packaging the high-resilience PU spring sponge.