Patent ID: 9375869
Filing Date: 2016-06-28
CPC Classification: B29C,B29K,B29L,E04C

Claim Text:
1. A manufacturing apparatus for a rod-shaped fiber reinforced polymer (FRP) bar composed of a fiber and resin, the manufacturing apparatus comprising a fiber winding reel, a resin supplier, a nozzle and a drawer, wherein the nozzle includes an outer nozzle, a first middle nozzle and a second middle nozzle; wherein the first middle nozzle is disposed inside the outer nozzle with an interval, and then the second middle nozzle is disposed inside inlet of the first middle nozzle with an interval; wherein the inlet of the outer nozzle through which a fiber enters has a greater sectional area than the outlet of the outer nozzle through which a fiber is drawn out; wherein the inlet of the first middle nozzle through which a fiber enters has a greater sectional area than the outlet of the first middle nozzle through which a fiber is drawn out; wherein the inlet of the second middle nozzle through which a fiber enters has a greater sectional area than the outlet of the second middle nozzle through which a fiber is drawn out; wherein dividing members are disposed at an interval between the outer nozzle and the first middle nozzle and an interval between the first middle nozzle and the second middle nozzle; wherein the dividing members are made of a plate member with a predetermined thickness; wherein a concave insert groove is formed in the inner surface of the outer nozzle; wherein an elastic member made of a spring is provided in the insert groove of the outer nozzle; wherein one side of the dividing member provided between the first middle nozzle and the outer nozzle is coupled to the elastic member and inserted into the insert groove of the outer nozzle; wherein the other end of the dividing member provided between the first middle nozzle and the outer nozzle is oriented toward the outer surface of the first middle nozzle; wherein a concave hooking groove is formed in the outer surface of the first middle nozzle which contacts the other end of the dividing member so that the other end of the dividing member coupled to the outer nozzle is located in the concave hooking groove; wherein a plurality of concave hooking grooves are formed in the outer surface of the first middle nozzle along a circumference of the first middle nozzle at intervals, and the hooking groove formed in the outer surface of the first middle nozzle have a curved inner surface; wherein a concave insert groove is formed in the inner surface of the first middle nozzle; wherein an elastic member made of a spring is provided in the insert groove of the first middle nozzle; wherein one side of the dividing member provided between the first middle nozzle and the second middle nozzle is coupled to the elastic member and inserted into the insert groove of the first middle nozzle; wherein a concave hooking groove is formed in the outer surface of the second middle nozzle which contacts the other end of the dividing member so that the other end of the dividing member coupled to the first middle nozzle is located in the concave hooking groove; wherein a plurality of concave hooking grooves are formed in the outer surface of the second middle nozzle along a circumference of the second middle nozzle at intervals, and the hooking groove formed in the outer surface of the second middle nozzle have a curved inner surface; wherein a fiber is supplied through a central hole of the second middle nozzle located at an innermost side, a fiber is supplied through regions divided in a circumferential direction by the dividing member in the interval of the first and second middle nozzles, and a fiber is supplied through a region divided in a circumferential direction by the dividing member in the interval between the first middle nozzle and the outer nozzle and in the interval between the first middle nozzle and the second middle nozzle, thereby manufacturing a hybrid FRP bar having a section in which the fibers form a greater number of fiber distribution layers from a center of the FRP bar to the outside and are also distinguishably distributed in each fiber distribution layer in a circumferential direction; and wherein if the location of the dividing member is changed by a rotation of the middle nozzle, a hybrid FRP bar is manufactured so that locations of a plurality of regions divided in a circumferential direction in each fiber distribution layer are changed.