The invention discloses a technological cover plate of a combined structure. The technological cover plate comprises a plurality of split shaped panels in
lap joint, and the split shaped panels comprise border parts provided with step surfaces and connecting parts connected with the ends, away from the step surfaces, of the border parts; the border parts and the connecting parts are molded throughone-time curing; and the split shaped panels are in
lap joint through the step surfaces. According to the technological cover plate, the border parts with the step surfaces are adopted,
motion coordination of internal structures of the technological cover plate is improved, the fitting degree of the technological cover plate and
skin green bodies is optimized, and
internal quality is guaranteed;
lap joint clearances are prevented from being generated, the possibility of the material overflow problem is reduced, even though the material overflow problem occurs, only resin overflows, and overflowed materials can be treated through simple
polishing; and the operation program is effectively simplified, the separated lap joint effect of the split shaped panels is improved, the possibility of material overflow at lap joint zones of the split panels is reduced, the structure is unique, the concept is novel, and the prepared technological cover plate of the combined structure has high structure
motion coordination of rubber technological cover plates.