An objective of the present invention is to injection-mold an assemblable shovel manufactured by assembling a handle and a shovel blade using a synthetic resin, allow a metal reinforcement for reinforcing the handle to be stably positioned on the center of the handle, firmly couple the handle and the shovel blade, increase strength of a coupled portion, allow multiple shovels to be conveniently transported, and allow firm binding. To achieve the objective, the assemblable shovel is manufactured by assembling a handle injection-molded using a synthetic resin and a shovel blade. A fixing hole is formed on one side of an upper end of a metal reinforcement inserted into the handle to be hung on a fixing pin formed on an inner surface of a mold to be fixed. A pressing extension unit and a cutting unit are formed on the upper and lower ends to be stably positioned on the inner side of the center of a forming space of the mold. The cutting unit of the metal reinforcement positioned in the handle protrudes to a lower end of the handle to expose a hollow space to the outside. A binding hole is formed on both sides of a grip of the handle to overlap multiple handles and then firmly fix the handles by a binding string such as a steel wire. An inclination protruding part becoming higher towards the inner side is formed in a hollow space of the inner surface of a coupling pipe of the shovel blade firmly coupled to the handle. A key groove and a thick part are formed on the inner and outer sides of the coupling pipe of the shovel blade to allow a key of the handle to be inserted into the key groove and then coupled and allow a coupling screw to be coupled to the thick part.본 발명은 삽자루와 삽날을 조립하여 제조하는 조립용 삽을 합성수지로 사출성형하되, 특히 삽자루의 보강을 위한 금속보강대가 삽자루의 중심부에 안정적으로 위치되게 하고, 또한 삽자루와 삽날의 견고한 결합과, 결합부의 견고성을 높이고, 운반시 여러개의 삽을 간편하고, 견고한 결속이 이루어질 수 있게 한 것이다.상기 과제를 해결하기 위한 수단으로서, 본 발명은 합성수지로 사출성형된 삽자루와 삽날을 조립하여 제조하는 조립용 삽을 구성하되, 삽자루 내부에 끼워지는 금속보강대 상단 일측에 고정공을 구성하여, 금형 내면에 구성된 고정핀에 걸어 고정될 수 있게 하고
