The building block screw and barrel represent a revolutionary advancement in plastic processing technology, designed with modular components that can be easily assembled, disassembled, and reconfigured like building blocks. This innovative structure breaks away from the traditional integrated design, offering unprecedented flexibility and adaptability to meet the diverse and changing needs of modern plastic manufacturing. Widely applicable in industries such as packaging, automotive parts, household appliances, and medical devices, these components redefine efficiency and versatility in plastic processing.