Propellant disposal device for a propulsion system

1. A propellant disposal device for a propulsion system comprising:

a carry-in unit configured to supply propulsion systems;

a cutting unit arranged for a process subsequent to that of the carry-in unit, and configured to individually receive the propulsion systems that are on standby at the carry-in unit and cut two opposite ends of the received propulsion system;

a propellant extraction unit arranged for a process subsequent to that of the cutting unit, and configured to insert an extraction tool into the cut ends of the propulsion system and extract the propellants charged within the propulsion system;

a return unit configured to sequentially deliver the propulsion system to the corresponding process positions; and

a propellant delivery unit having its end portion located below the cut end of the propulsion system where the extraction tool is inserted, and configured to deliver the extracted propellants to a preset location for discharge.

2. The propellant disposal device according to claim 1 , wherein the cutting unit comprises:

a main frame forming an outward appearance of the cutting unit and having an upper wall and two side walls;

a seating part disposed below the main frame for seating the propulsion system received from the carry-in unit;

a pair of cutters reciprocally mounted on the main frame and driven by a driving force of a motor for cutting the opposite ends of the propulsion system seated on the seating part; and

a movement prevention part disposed directly above the seating part, the movement prevention part configured to be in contact with an upper surface of the propulsion system seated on the seating part to prevent movement of the propulsion system when the two opposite ends of the propulsion system are cut by the cutting unit.

3. The propellant disposal device according to claim 2 , wherein the seating part comprises:

a pair of rotary shafts configured to rotate by a driving force of a motor for rotation; and

rotational rollers coupled to the rotary shafts, and configured to have the propulsion system seated thereon and rotate the propulsion system in response to the rotation of the rotary shafts.

4. The propellant disposal device according to claim 2 , wherein the movement prevention part is mounted in such a way as to be elevated by an elevation cylinder of the main frame and comprises a contact roller disposed at an end of a lower portion thereof in such a way as to perform a rolling action in contact with the upper surface of the propulsion system.

5. The propellant disposal device according to claim 2 , further comprising a separation unit, wherein the separation unit comprises:

a pair of grasping chucks disposed adjacent the side walls of the main frame of the cutting unit in a horizontally movable manner along a longitudinal direction of the propulsion system; and

delivery clamps disposed adjacent the side walls of the main frame of the cutting unit in such a way as to be movable back and forth, to thereby grasp and deliver the cut ends of the propulsion system grasped by the grasping chucks.

6. The propellant disposal device according to claim 1 , wherein the propellant extraction unit comprises:

a main frame forming an outward appearance of the propellant extraction unit and having an upper wall and two side walls;

a seating base disposed below the main frame and having a seating recess formed on an upper surface thereof for seating the the propulsion system with the opposite ends cut by the cutting unit;

a fixing clamp reciprocally mounted on the main frame for preventing rotation of the propulsion system by pressurizing the circumferential surface of the propulsion system seated on the seating base;

tool assemblies located at both sides of the seating base and adapted to extract propellants charged within the propulsion system while moving into the cut ends of the propulsion system seated on the seating base;

a driving unit adapted for driving the tool assemblies; and

a moving unit adapted for horizontally moving the driving unit.

7. The propellant disposal device according to claim 6 , wherein each of the tool assemblies has the extraction tool formed in a conical shape whose diameter is gradually reduced toward a terminal end thereof.

8. The propellant disposal device according to claim 6 , wherein the driving unit comprises a driving motor and a driving shaft joined with the tool assembly while being driven by the driving force of the driving motor, wherein the driving shaft has an empty pipe form so that cooling water is supplied to the inside of the driving shaft.

9. The propellant disposal device according to claim 1 , wherein the return unit comprises:

a first return lever having a first end located at an inner area of the carry-in unit where the propulsion system is provided and a second end located at an inner area of the cutting unit where the propulsion system is seated, the first return lever being gradually downwardly inclined from the first end toward the second end;

a second return lever having a first end located at an inner area of the cutting unit where the propulsion system is seated and a second end located at an inner area of the propellant extraction unit where the propulsion system is seated, the second return lever being gradually downwardly inclined from the first end toward the second end;

a third return lever having a first end located at an inner area of the propellant extraction unit where the propulsion system is seated and a second end located toward a delivery place of the propulsion system, the third return lever being gradually downwardly inclined from the first end toward the second end; and

elevation cylinders for selectively elevating the return levers,

wherein the return levers are arranged in a manner such that said return levers do not interfere with one another in operation.

10. The propellant disposal device according to claim 1 , wherein the propellant delivery unit comprises:

a conveyer configured to take the propellants dropped from the cut ends of the propulsion system to the preset location for discharge; and

a hopper disposed adjacent the conveyer for gathering the propellants therein.

11. The propellant disposal device according to claim 10 , wherein the conveyer has a shape inclined gradually upwardly from a starting portion to an end portion thereof.