| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic oil storage device capable of stably returning the hydraulic oil from a return pipe to a main tank via a sub tank while reducing a burden of a worker related with assembly and a load to a fixing member for fixing the return pipe, and an injection molding device equipped with the hydraulic oil storage device.SOLUTION: A hydraulic oil storage device includes a connection box 30 for dividing a storage region 22a of a sub tank 22 into a first region 22b including a flow passage opening 23a of a connecting pipe 23, and a second region 22c other than the first region 22b, wherein the connection box 30 is equipped with an internal region communicating part 32 having the first region 22b and the second region 22c communicated therebetween and generating pressure loss equivalent to the pressure loss of the connecting pipe 23 or larger than the pressure loss, and second return pipes 28a, 28b are connected to the sub tank 22 so that flow passage exits 38a, 38b face the inside of the first region 22b. |
