Abstract: An injection mold including a gate and a cavity, where a weld portion is formed inside the cavity by injecting molten resin containing reinforcing fibers from the gate into the cavity, the injection mold has a resin reservoir open to the cavity, and in a first cross section along an opening end surface 110S of the resin reservoir 110 to the cavity, a distance CLD between a width center line CL11 of the resin reservoir and a width center line of the cavity, which is measured along a perpendicular line n12 of the width center line CL12 of the cavity, changes at least in part along the width center line of the cavity.

Abstract: An injection mold including a gate and a cavity, where a weld portion is formed inside the cavity by injecting molten resin containing reinforcing fibers from the gate into the cavity; a cavity surface of the injection mold has a plurality of ridge portions 140 on a downstream side in a resin flow direction of the cavity, where the ridge portions extend in a direction intersecting a weld extending direction of the weld portion and protrude into the cavity; and the plurality of ridge portions are arranged at intervals from each other in a direction intersecting the weld extending direction and are arranged at intervals from each other in the weld extending direction.

Abstract: An injection mold including a gate and a cavity, where the injection mold is configured such that a weld portion is formed inside the cavity by injecting molten resin containing reinforcing fibers from the gate into the cavity; a cavity surface of the injection mold has a ridge portion 140, which protrudes into the cavity, in a vicinity of an end portion on a downstream side in a resin flow direction of the cavity; and the ridge portion is distanced from the weld portion in a direction intersecting a weld extending direction of the weld portion, and extends in a direction intersecting the weld extending direction.

Abstract: An injection mold including a gate and a cavity, where a weld portion is formed inside the cavity by injecting molten resin containing reinforcing fibers from the gate into the cavity, the injection mold has a resin reservoir open to the cavity, and in a first cross section along an opening end surface 110S of the resin reservoir 110 to the cavity, a distance CLD between a width center line CL11 of the resin reservoir and a width center line of the cavity, which is measured along a perpendicular line n12 of the width center line CL12 of the cavity, changes at least in part along the width center line of the cavity.