Abstract: An injection molding machine includes supporting plates, molds coupled to the supporting plates, and a coupling guide device to guide the coupling of the molds and the supporting plates. The coupling guide device includes a first coupling guide recess and a first coupling guide protrusion provided at center portions of the molds and the supporting plates so as to be coupled to each other, and a second coupling guide recess and a second coupling guide protrusion provided at the molds and the supporting plates, spaced apart from the first coupling guide recess and the first coupling guide protrusion, so as to be coupled to each other. The second coupling guide recess is formed lengthwise in a direction toward a periphery from the center portions of the molds and the supporting plates.

Abstract: A mold for injection molding and a molding method using the same, in which multiple gates are provided to a curved runner, thereby easily molding a product having a complicated shape and a large width, and in which a plurality of curved runners are provided, thereby easily ejecting forms that are filled in the runners. The mold includes first and second molds defining a mold cavity, a first gate disposed at a first position of the mold cavity, a second gate disposed at a second position of the mold cavity spaced apart from the first position, a first curved runner provided to the second mold so as to be connected to the first gate, and a second curved runner provided to the second mold so as to be connected to the second gate. The first and second curved runners have inlets that are connected with each other, and cross-sectional areas that are gradually reduced from the inlets to the first and second gates.

Abstract: An injection molding machine includes supporting plates, molds coupled to the supporting plates, and a coupling guide device to guide the coupling of the molds and the supporting plates. The coupling guide device includes a first coupling guide recess and a first coupling guide protrusion provided at center portions of the molds and the supporting plates so as to be coupled to each other, and a second coupling guide recess and a second coupling guide protrusion provided at the molds and the supporting plates, spaced apart from the first coupling guide recess and the first coupling guide protrusion, so as to be coupled to each other. The second coupling guide recess is formed lengthwise in a direction toward a periphery from the center portions of the molds and the supporting plates.

Abstract: A mold for injection molding and a molding method using the same, in which multiple gates are provided to a curved runner, thereby easily molding a product having a complicated shape and a large width, and in which a plurality of curved runners are provided, thereby easily ejecting forms that are filled in the runners. The mold includes first and second molds defining a mold cavity, a first gate disposed at a first position of the mold cavity, a second gate disposed at a second position of the mold cavity spaced apart from the first position, a first curved runner provided to the second mold so as to be connected to the first gate, and a second curved runner provided to the second mold so as to be connected to the second gate. The first and second curved runners have inlets that are connected with each other, and cross-sectional areas that are gradually reduced from the inlets to the first and second gates.