Forming device of polyurethane solid tire and solid tire preparation method

Abstract

The invention discloses a forming device of a polyurethane solid tire and a solid tire preparation method. The forming device comprises a mold (1) and a heavy load bearing rotary table (2) for drivingthe mold (1) to rotate; the mold (1) comprises an upper mold (11) and a lower mold (12) which are opened and closed in a hinged mode on the side edge, the upper mold (11) and the lower mold (12) arefastened through a locking mechanism (126) after being assembled, and a solid tire forming mold cavity (13) is formed in the mold (1); a casting cavity (112) is formed in the center of the upper mold(11); the inner side wall of the lower mold (12) is a tire forming arc-shaped surface, and a circular truncated cone (122) is buckled with the pouring cavity (112) after the mold is closed; and a positioning groove connected with the heavy load bearing rotary table (2) is arranged at the bottom of a body B (121). According to the forming device, the process formula and the process parameters are optimized, the polyurethane solid tire is produced by using the forming device of the polyurethane solid tire, the solid tire with stable quality performance can be quickly and efficiently obtained, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a polyurethane solid tire molding device and a solid tire preparation method. Background technique [0002] Solid tires are often used in industrial vehicles and are widely used in mines, factories, quarries and other occasions with harsh road conditions. The carcass of solid tires is generally made of rubber or polyurethane. Rubber is the material of choice for making tires, but it has disadvantages such as short service life, poor wear resistance and tear resistance. Polyurethane solid tires overcome the shortcomings of rubber solid tires, greatly improving oil and acid resistance, abrasion resistance, tear resistance and tire life. The carcass of polyurethane solid tires is generally molded by polyurethane casting. The polyurethane foam material has good fluidity. The polyurethane foam material is injected into the mold through a polyurethane foam machine and foamed in the mol...

AI Technical Summary

Problems solved by technology

During the production process, due to the rapid foaming of polyurethane, the mold must be closed before polyurethane foaming. Time is tight, and workers often close the mold too slowly during the operation, resulting in a large amount of foam material overflowing the mold, which affects production efficiency and product yield

[0004] The problem of overflow caused by too slow mold closing can be avoided by opening injection holes on the upper surface of the mold, but the injection holes need to be opened in the inner cavity of the mold, usually close to the side wall of the mold, and it is a single opening, and the foaming material passes through the injection hole After injection, due to the fast foaming speed, the foaming material is not easy to flow evenly in the mold, resulting in uneven quality of the final product and affecting the quality of the final product

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