Abstract:
The present invention relates to a novel type of propellant disposal device for a propulsion system, wherein disposal of the propulsion system is performed through an automated process, and the propellant charged within the propulsion system is collected simultaneously through the same process, to thereby enable the propulsion system to be re-utilized through disposal processes.

Description:
REFERENCE TO RELATED APPLICATIONS 
       [0001]    This is a continuation of pending International Patent Application PCT/KR2011/002139 filed on Mar. 29, 2011, which designates the United States and claims priority of Korean Patent Application No 10-2010-0030367 filed on Apr. 2, 2010, the entire contents of which are incorporated herein by reference. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention relates to a disposal device, and more particularly, to a propellant disposal device for a propulsion system which separates propellants from a solid propulsion system containing solid propellants therein, such as rockets or shells, to thereby reutilize the propulsion system. 
       BACKGROUND OF THE INVENTION 
       [0003]    In general, a rocket bomb is divided into a propulsion system, a warhead and a fuse, and in this instance, the propulsion system has a combustion tube made of aluminum, and the combustion tube is charged with solid propellants of a mixed type consisting of various compounds. In this instance, the solid propellants are propelling charges of a solid type. 
         [0004]    A disposal of the propulsion system of the rocket bomb is carried out through a discard process if the propulsion system becomes superannuated. That is, the propulsion system is discarded through the process of disassembling the propulsion system manually, extracting the solid propellants charged in the propulsion system, and incinerating the solid propellants. 
         [0005]    However, the above-mentioned discard process has several problems in that it needs a safety structure because it always has problems of explosion of the solid propellants or emission of noxious gases, and in that it is very difficult to relieve bolts to separate and disassemble the propulsion system in the case that the bolts are worn out. 
         [0006]    So, recently, Korean Patent No. 10-0531123 discloses a method of treating and emitting noxious gases generated after solid propellants are burnt out inside a propulsion system without the process of separating and disassembling the propulsion system, and various efforts for safe disposal of propellants have been made. 
         [0007]    However, the prior arts have a problem in that the propulsion system is not reutilized due to combustion or incineration of the solid propellants, and particularly, the combustion tube of the propulsion system is made of expensive aluminum but is not reutilized due to combustion of the solid propellants. 
       SUMMARY OF THE INVENTION 
       [0008]    Accordingly, the present invention has been made in an effort to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a propellant disposal device for a propulsion system which can simultaneously carry out disposal of the propulsion system and collection of propellants charged within the propulsion system through an automated process to thereby enable the propulsion system to be reutilized through the disposal process. 
         [0009]    To achieve the above objects, the present invention provides a propellant disposal device for a propulsion system including: a carry-in unit which provides a target propulsion system; a cutting unit which is arranged for the process subsequent to that of the carry-in unit, and which individually receives the propulsion systems that are on standby at the carry-in unit and cuts both ends of the received propulsion system; a propellant extraction unit which is arranged for the process subsequent to that of the cutting unit, and which moves into the cut ends of the propulsion system and extracts the propellants charged within the propulsion system; and delivery units arranged in between the said units to sequentially deliver the propulsion system to the corresponding process positions. 
         [0010]    Moreover, the cutting unit includes: a first main frame forming the outward appearance of the cutting unit and having an upper wall and both side walls; a seating part disposed at the bottom inside the first main frame for seating the propulsion system received by the return unit; a pair of cutters elevatably mounted on the first main frame by an operation of an elevation cylinder and driven by a driving force of a motor for cutting to respectively cut both ends of the propulsion system seated on the seating part; and a movement prevention part disposed directly above the seating part which is located at an upper part inside the first main frame, the movement prevention part getting in contact with the upper surface of the propulsion system seated on the seating part to prevent movement of the propulsion system during cutting work. 
         [0011]    Furthermore, the seating part includes: a pair of rotary shafts respectively mounted on front and rear sides of the bottom of the propulsion system and rotated by a driving force of a motor for rotation; and rotational rollers adapted for rotating in contact with the front and rear sides of the bottom of the propulsion system to thereby rotate the propulsion system. 
         [0012]    Additionally, the movement prevention part is mounted in such a way as to be elevated by the elevation cylinder of the first 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. 
         [0013]    In addition, the separation unit includes: a pair of grasping chucks respectively mounted on both side walls of the first main frame in a horizontally movable manner along a longitudinal direction of the propulsion system; and delivery clamps respectively elevatably mounted on both side walls of the first main frame 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. 
         [0014]    Moreover, the propellant extraction unit includes: a second main frame forming the outward appearance of the propellant extraction unit and having an upper wall and both side walls; a seating base disposed at the bottom inside the second main frame and having seating recess formed on the upper surface thereof for seating the circumferential surface of the lower end of the propulsion system, whose both ends are cut, received by the return unit; a fixing clamp elevatably mounted on the second main frame for preventing rotation of the propulsion system while pressurizing the circumferential surface of the upper end of the propulsion system seated on the seating base; tool assemblies respectively located at both sides of the seating base and adapted to grasp 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. 
         [0015]    Furthermore, each of the tool assemblies has a cutting tool formed in a conical shape whose diameter is gradually reduced toward an end thereof. 
         [0016]    Additionally, 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 is in an empty pipe form and the inside of the tool assembly is opened, so that cooling water is supplied to the inside of the driving shaft. 
         [0017]    In addition, the return unit includes: a first return lever having an end located at the side of the carry-in unit where the propulsion system is provided and the other end located at the bottom of the side of the cutting unit where the propulsion system is seated, the first return lever being gradually downwardly inclined from one end toward the other end; a second return lever having an end located at the bottom of the side of the cutting unit where the propulsion system is seated and the other end located at the bottom of the side of the propellant extraction unit where the propulsion system is seated, the second return lever being gradually downwardly inclined from one end toward the other end; a third return lever having an end located at the bottom of the side of the propellant extraction unit where the propulsion system is seated and the other end located toward a delivery place of the propulsion system, the third return lever being gradually downwardly inclined from one end toward the other end; and elevation cylinders respectively and selectively elevating the return levers, wherein the return levers are arranged to intercross one another, so that they do not interfere with one another in operation. 
         [0018]    Moreover, the propellant disposal device for the propulsion system according to the present invention further includes a propellant delivery unit that has an end located at the bottom of a portion of the propellant extraction unit where both ends of the propulsion system are located and that delivers the extracted propellants. 
         [0019]    Furthermore, the propellant delivery unit includes: a conveyer formed at a portion of an area ranging from the end which receives the propellants to the other end which delivers the propellants, the conveyer being inclined gradually upwards; and a hopper disposed at the side of the conveyer where the propellants are extracted for containing the propellants therein. 
         [0020]    The propellant disposal device for the propulsion system according to the present invention enables the propulsion system made of aluminum and the propellants to be reutilized because it can extract the propellants from the propulsion system. 
         [0021]    Moreover, the propellant disposal device for the propulsion system according to the present invention can continuously and rapidly dispose of the propulsion systems in quantity to reduce a disposal period of time and carry out the disposal work in safety because it carries out the disposal of the propulsion systems through the automated process. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0022]      FIG. 1  is a front view of a propellant disposal device for a propulsion system according to a preferred embodiment of the present invention. 
           [0023]      FIG. 2  is a plan view of the propellant disposal device for the propulsion system. 
           [0024]      FIG. 3  is a view showing essential parts of the propellant disposal device for the propulsion system for explaining a structure of a delivery unit of the propellant disposal device for the propulsion system. 
           [0025]      FIG. 4  is a sectional view showing an example of a structure of the propulsion system treated by the propellant disposal device for the propulsion system. 
           [0026]      FIG. 5  is a view showing essential parts for explaining an operation state of a first return lever of the delivery unit of the propellant disposal device for the propulsion system. 
           [0027]      FIGS. 6 to 10  are perspective views showing structures and operation states of a cutting unit and a separation unit of the propellant disposal device for the propulsion system. 
           [0028]      FIG. 11  is a view showing essential parts for explaining an operation state of a second return lever of the delivery unit of the propellant disposal device for the propulsion system. 
           [0029]      FIGS. 12 to 14  are perspective view showing structures and operation states of a propellant extraction unit and a propellant delivery unit of the propellant disposal device for the propulsion system. 
           [0030]      FIG. 15  is a view showing essential parts for explaining an operation state of a third return lever of the delivery unit of the propellant disposal device for the propulsion system. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0031]    Hereinafter, referring to  FIGS. 1 to 15 , a preferred embodiment of a propellant disposal device for the propulsion system according to the present invention will be described. 
         [0032]    In the present invention, the propulsion system is, as an example, a propulsion system for a rocket bomb, which is closed at both ends and is formed in a pipe filled with solid propellants. 
         [0033]    As shown in  FIGS. 1 to 3 , the propellant disposal device for the propulsion system according to the present invention (hereinafter, called a “disposal device”) includes a carry-in unit  100 , a cutting unit  200 , a separation unit  300 , a propellant extraction unit  400 , a delivery unit  500 , and a return unit  600 . 
         [0034]    The above parts will be described in more detail as follows. 
         [0035]    First, the carry-in unit  100  is a series of parts for temporarily standing by and storing before a target propulsion system  10  is carried into a processing position. In the present invention, the carry-in unit  100  is constructed of a plurality of rollers. 
         [0036]    That is, because the carry-in unit  100  has a plurality of the rollers, a plurality of propulsion systems  10  can be arranged and seated in order. 
         [0037]    Next, the cutting device  200  is a device for cutting both end portions of the propulsion system  10 . The cutting device  200  is arranged for the process subsequent to that of the carry-in unit  100 . 
         [0038]    As shown in  FIGS. 6 to 10 , the cutting unit  200  includes a first main frame  210 , a seating part  220 , a pair of cutters  230 , and a movement prevention part  240 . 
         [0039]    Here, the first main frame  210  includes an upper wall  211  and both side walls  212  and forms the outward appearance of the cutting unit  200 . Front and rear sides of the first main frame  210  are opened for allowing the propulsion system  10  to be carried in and delivered out. 
         [0040]    Moreover, the seating part  220  is a portion to which the propulsion system  10  is seated and is disposed at a lower part inside the first main frame  210 . 
         [0041]    The seating part  220  includes a pair of rotary shafts  221 , and a plurality of rotational rollers  222  mounted at the rotary shafts  221 . 
         [0042]    In this instance, the rotary shafts  221  are respectively located at front and rear sides of the bottom of the propulsion system  10  and the propulsion system  10  is seated between the rotary shafts  221 . Ends of the rotary shafts  221  are rotatably mounted penetrating a side wall  212  of the first main frame  210 . 
         [0043]    Furthermore, a roller rotating motor  223  axially joined with the rotary shafts  221  is mounted on the outer face of the side wall, so that the rotary shafts  221  are forcedly rotated by the roller rotating motor  223 . So, even though the cutter  230  cuts a part of both ends of the propulsion system  10 , because the propulsion system  10  is rotated, the entire circumferential surfaces of both ends of the propulsion system  10  are cut. 
         [0044]    Additionally, each of the rotational rollers  222  is constructed to wrap the circumferential surface of each of the rotary shafts  221  and is made of a material with a highly frictional force like rubber. 
         [0045]    So, when the rotary shafts  221  are rotated, the rotational rollers  222  are also rotated so that the propulsion system  10  seated on the rotational rollers  222  can be rotated. 
         [0046]    In addition, a pair of the cutters  230  has a circular saw for cutting both ends of the propulsion system  10  seated on the seating part  220 . 
         [0047]    The cutters  230  are elevatably mounted at both upper ends inside the first main frame  210  and receive a driving force from a cutter-driving motor  231 . 
         [0048]    The cutters  230  are elevated by operation of a cutter-elevating cylinder  232 , and the cylinder  232  is fixed on the outer surface of the upper wall  211  of the first main frame  210 , and a cylinder rod  233  of the cutter-elevating cylinder  232  penetrates the upper wall  211  and is joined to the cutter-driving motor  231 . 
         [0049]    Moreover, the cutters  230  are positioned at portions joined with closing caps  11  (See  FIG. 4 ) joined to be inserted into both ends of the propulsion system  10  seated on the seating part  220 , particularly, portions where O-rings  12  are mounted. Furthermore, the cutters  230  have a cutting depth set to be as deep as not to completely cut the O-rings  12 . The reason is to prevent a damage that may be caused when cutter blades of the cutters  230  get in contact with the closing caps  11  and to smoothly carry out a process of separating the cut ends of the propulsion system  10  cut by the separation unit  300  after completing the cutting work. 
         [0050]    Furthermore, the movement prevention part  240  is a series of parts to prevent the propulsion system  10  from being moved laterally during the cutting work of the propulsion system  10 . 
         [0051]    The movement prevention part  240  is located directly above the seating part  220  inside the first main frame  210 . 
         [0052]    Additionally, the movement prevention part  240  is elevatably mounted by the roller-elevating cylinder  241 , and a contact roller  242  is disposed at an end of a lower side of the movement prevention part  240  and carries out a rolling action while getting in contact with the upper face of the propulsion system  10 . 
         [0053]    Next, the separation unit  300  separates both ends  13  (hereinafter, called a “cut matters”) (See  FIG. 10 ) of the propulsion system  10  cut by the cutting unit  200  and delivers them from the propulsion system  10 . 
         [0054]    As shown in  FIGS. 6 to 10 , the separation unit  300  mounted on both side walls  212  of the first main frame  210  of the cutting unit  200  in a horizontally movable manner along a longitudinal direction of the propulsion system  10 . 
         [0055]    In addition, the separation unit  300  includes: a pair of grasping chucks  310  for grasping the cut matters  13  and separating them from the propulsion system  10 ; and a pair of delivery clamps  320  elevatably mounted on both side walls  212  of the first main frame  210  in such a way as to be movable back and forth to thereby deliver the cut matters  13  after grasping the cut matters  13  held by the grasping chucks  310 . 
         [0056]    In this instance, the grasping chucks  310  and the delivery clamps  320  respectively have a plurality of fingers  311  and  321  for grasping outer circumferential surfaces of the cut matters  13  while moving in a peripheral direction by compressed air pressure. 
         [0057]    Of course, such a structure of the delivery clamps  320  is not essential. In other words, another structure to deliver the cut matters  13  in free fall by removing the grasping force after a pair of the grasping chucks  310  are moved backwards is also possible. In this case, not shown in the drawings, but it is preferable that a conveyer for returning the cut matters  13  is mounted directly below the side that each of the grasping chucks  310  is moved backwards. 
         [0058]    In the meantime, the separation unit  300  is disposed on the cutting unit  200  in the present invention, but if necessary, may be mounted separately from the cutting unit  200 . 
         [0059]    Next, the propellant extraction unit  400  is a series of parts for extracting the propellants charged within the propulsion system  10  while moving into both ends of the propulsion system  10  opened by the cutting process, and is arranged for the process subsequent to that of the cutting unit  200 . 
         [0060]    As shown in  FIGS. 12 to 14 , the propellant extraction unit  400  includes a second main frame  410 , a seating base  420 , a fixing clamp  430 , a tool assembly  440 , a driving unit  450 , and a moving unit  460 . 
         [0061]    Here, the second main frame  410  forms the outward appearance of the propellant extraction unit  400  and includes an upper wall  411  and both side walls  412 . In this instance, front and rear sides of the second main frame  410  are opened for carrying in and delivering out the propulsion system  10 . 
         [0062]    Moreover, the seating base  420  is a part on which the propulsion system  10  cut at both ends is seated, is disposed on the bottom inside the second main frame  410 , and has a seating recess (not shown) formed on the upper surface in such a fashion that the circumferential surface of the lower end of the propulsion system  10  is seated. 
         [0063]    Furthermore, the fixing clamp  430  fixes the propulsion system  10  seated on the seating base  420  together with the seating base  420 , and is elevatably mounted on the second main frame  410 . 
         [0064]    In this instance, the fixing clamp  430  has a seating recess (not shown) formed on the bottom surface of the fixing clamp  430  in such a fashion that the circumferential surface of the upper end of the propulsion system  10 . 
         [0065]    Additionally, in order to elevate the fixing clamp  430 , a cylinder rod  432  of a clamp-elevating cylinder  431  fixed on the outer surface of the upper wall of the second main frame  410  penetrates the upper wall  411  of the second main frame  410  and is connected to the upper surface of the fixing clamp  430 . 
         [0066]    Moreover, the tool assemblies  440  dig out the propellants charged inside the propulsion system  10  while moving into both ends of the propulsion system  10  seated on the seating base  420 . 
         [0067]    The tool assemblies  440  are disposed symmetrically at both sides of the seating base  420  and are moved into both ends of the propulsion system  10  seated on the seating base  420 . 
         [0068]    In this instance, each of the tool assemblies  440  includes a cutting tool, for instance, a drill type end mill, formed in a conical shape whose diameter is gradually reduced toward an end so as to smoothly extract the propellants charged inside the propulsion system  10 . 
         [0069]    Furthermore, the driving unit  450  has a series of parts for driving the tool assembly  440  and includes a tool driving motor  451 , and a driving shaft  452  driven by receiving a driving force of the tool driving motor  451  and joined with the tool assembly  440 . 
         [0070]    In this instance, the tool driving motor  451  is mounted on the outer face of the side wall  412  of the second main frame  410  in a horizontally movable manner, and the driving shaft  452  penetrates the side wall  412  of the second main frame  410  and is connected with the tool assembly  440 . 
         [0071]    Particularly, in the present embodiment, it is additionally proposed that the driving shaft  452  is in an empty pipe form and the inside of the tool assembly  440  is opened so that cooling water is supplied to the inside of the driving shaft  452 . The reason is to prevent heat generation or flame due to friction which may be generated during work by supplying cooling water to the part where extraction work is carried out while the tool assemblies  440  perform the propellant extraction work. 
         [0072]    Furthermore, the moving unit  460  has a series of parts for horizontally moving the driving unit  450 , and includes: a seating bracket  461  on which the driving unit  450  is seated; a guide rail  462  for supporting a horizontal movement of the seating bracket  461 ; and a bracket moving motor  463  connected with the seating bracket  461  and enabling the seating bracket  461  to be moved in support by the guide rail  462 . 
         [0073]    In this instance, it is preferable that the bracket moving motor  463  and the seating bracket  461  respectively have a ball screw structure and are connected with each other. 
         [0074]    Of course, the seating bracket  461  may be moved not by the motor but by an air-oil pressure cylinder. 
         [0075]    Next, the delivery unit  500  is to receive and deliver the propulsion system  10  from which the propellants are extracted, and is arranged for the process subsequent to that of the propellant extraction unit  400 . 
         [0076]    The delivery unit  500  also has a plurality of rollers like the carry-in unit  100 , and it is illustrated in  FIGS. 1 to 3 . 
         [0077]    Next, the return unit  600  is to return the propulsion systems  10  to the corresponding process positions in order, and includes components arranged among the above units and parts. 
         [0078]    As shown in  FIGS. 3 ,  4 ,  10  and  14 , the return unit  600  includes a first return lever  610  disposed between the carry-in unit  100  and the cutting unit  200 , a second return lever  620  disposed between the cutting unit  200  and the propellant extraction unit  400 , a third return lever  630  disposed between the propellant extraction unit  400  and the delivery unit  500 , and first, second and third elevation cylinders  611 ,  621  and  631  for respectively elevating the return levers  610 ,  620  and  630 . 
         [0079]    In this instance, the first return lever  610  has an end located at the bottom of the side of the carry-in unit  100  where the propulsion system  10  is delivered and the other end located at the bottom (the bottom of each rotary shaft forming the seating part) of the side of the cutting unit  200  where the propulsion system  10  is seated, and is gradually downwardly inclined from one end toward the other end. 
         [0080]    Additionally, the second return lever  620  has an end located at the bottom (the bottom of each rotary shaft forming the seating part) of the side of the cutting unit  200  where the propulsion system  10  is seated and the other end located at the bottom of the side of the propellant extraction unit  400  where the propulsion system  10  is seated, and is gradually downwardly inclined from one end toward the other end. 
         [0081]    Moreover, the third return lever  630  has an end located at the bottom of the side of the propellant extraction unit  400  where the propulsion system  10  is seated and the other end located at the bottom of the side of the delivery unit  500  where the propulsion system  10  is carried in, and is gradually downwardly inclined from one end toward the other end. 
         [0082]    Furthermore, each of the elevation cylinders  611 ,  621  and  631  is located at the bottom of each of the return levers  610 ,  620  and  630 , and cylinder rods  612 ,  622  and  632  of the elevation cylinders  611 ,  621  and  631  are respectively joined and fixed to bottoms of the return levers  610 ,  620  and  630 . 
         [0083]    Particularly, in the present invention, the return levers  610 ,  620  and  630  are arranged in such a way as to be intercrossed along a direction perpendicular to a return direction of the propulsion system  10  so that they do not interfere with one another in operation. 
         [0084]    Of course, not shown in the drawings, but the return levers  610 ,  620  and  630  may be formed in such a way as to be all horizontal to one another and to be inclined when the elevation cylinders  611 ,  621  and  631  are elevated. 
         [0085]    Meanwhile, in the present invention, the propellant disposal device may further include a propellant delivery unit  700  for delivering the propellants extracted by the propellant extraction unit  400  to a set place. 
         [0086]    As shown in  FIGS. 12 to 14 , the propellant delivery unit  700  has an end located at the bottom of a portion of the propellant extraction unit  400  where both ends of the propulsion system  10  are located, and includes a conveyer  710  inclined upwardly and formed at a portion of an area ranging from the end which receives the propellants to the other end which delivers the propellants. Of course, it is preferable that the propellant delivery unit  700  further includes a hopper (not shown) formed at the propellant delivering side of the conveyer  710  for containing the propellants. 
         [0087]    Hereinafter, the action of the propellant disposal device according to the present invention will be described in order of the processes in more detail. 
         [0088]    wow First, as shown in  FIG. 3 , when work is started while the propulsion systems  10  respectively seated on the carry-in unit  100  are on standby, as shown in  FIG. 5 , the first elevation cylinder  611  of the return unit  600  is operated so as to upwardly move the first return lever  610 . 
         [0089]    Accordingly, each the propulsion systems  10  is upwardly moved in a state where they are seated on the first return lever  610 , and in this instance, the propulsion system  10  is located between the two rotary shafts  221  of the seating part  220  of the cutting unit  200 , which is located at the post process position, while rolling by an inclination angle formed by the first return lever  610 , and then, is seated on the rotational rollers  222  mounted on the rotary shafts  221 . The above is illustrated in  FIGS. 6 and 7 . 
         [0090]    Next, as shown in  FIG. 7 , when the propulsion system  10  is seated between the two rotary shafts  221 , cutting work for cutting both ends of the seated propulsion systems  10  is carried out. 
         [0091]    In this instance, as shown in  FIG. 8 , the contact roller  242  of the movement prevention part  240  gets in contact with the upper surface of the propulsion system  10  while moving downwardly, and in this state, as shown in  FIG. 9 , a pair of the cutters  230  are moved downwardly and rotated by the driving force of the cutter driving motor  231  so as to cut set portions of both ends of the propulsion system  10 . In this instance, the set portion means an O-ring mounted portion of a part joined with the closing cap  11  that is joined to be inserted into both ends of the propulsion system  10 . 
         [0092]    Furthermore, as described above, when the cutting work of both ends of the propulsion system  10  by the cutters  230  is carried out, the roller rotating motor  223  is operated so as to rotate the rotary shafts  221 . Accordingly, because the propulsion system  10  is rotated while the rotational rollers  222  also perform a rolling motion by the rotation of the rotary shafts  221 , the cutting work can be performed more smoothly. In this instance, a rotational direction of the propulsion system  10  is controlled to be opposed to the rotational direction of the cutters  230 . 
         [0093]    Additionally, when the cutting work of both ends of the propulsion system  10  is finished through a series of the above processes, the cutters  230  and the contact roller  242  are elevated to their initial positions and the operation of the cutters  230  is stopped, and then, the rotation of the rotary shafts  221  is also stopped while the operation of the roller rotating motor  223  is stopped. 
         [0094]    In this instance, because both ends of the propulsion system  10  are not completely cut but just the surface of the propulsion system  10  is cut, in fact, they keep a state where they are attached to the propulsion system  10  by a part of the O-ring  12 , which is not completely cut, and the closing cap  11  which is located crossing the inside part and the outside part of the propulsion system  10  along boundary with the cut portion. 
         [0095]    Next, when the cutting work of both ends of the propulsion system is completed, both ends (cut matters) of the propulsion system  10  cut by the separation unit  300  are separated from the propulsion system  10  and delivered to the set position. 
         [0096]    As shown in  FIG. 10 , when a pair of the grasping chucks  310  of the separation unit  300  are moved backwardly in a state where they respectively grasp the cut matters  13 , some of both ends of the propulsion system  10  and the closing cap  11  are forcedly separated from the propulsion system  10 . Continuously, when the delivery clamp  320  releases the grasping force after moving forwardly in a state where the delivery clamp  320  grasps the cut matters  13 , the cut matters  13  are delivered out in free fall to the corresponding position. 
         [0097]    Next, when the cutting work of both ends of the propulsion system is completed through the above process, the propulsion system  10  is transferred to the propellant extraction unit  400  located at the post process position, and then, work for extracting the propellants charged inside the propulsion system  10  is carried out. 
         [0098]    For this, the second elevation cylinder  621  of the return unit  600  is operated so as to upwardly move the second return lever  620 . 
         [0099]    Accordingly, the propulsion system  10  is upwardly moved in a state where it is seated on the upper surface of the second return lever  620 . During the upward movement, the propulsion system  10  is seated on the seating base  420  of the propellant extraction unit  400 , which is located at the post process position, while rolling by the inclination angle formed by the second return lever  620 . It is illustrated in  FIG. 11 . 
         [0100]    In addition, when the propulsion system  10  is completely seated on the seating base  420 , as shown in  FIG. 12 , a pair of the fixing clamps  430  are moved downwardly so as to fix both ends of the propulsion system  10  seated on the seating base  420 . 
         [0101]    In the above state, as shown in  FIG. 13 , when the tool driving motor  451  of the driving unit  450  is operated, the tool assemblies  440  are rotated, the bracket moving motor  463  of the moving unit  460  is also operated, and the driving unit  450  is gradually moved toward the propulsion system  10 , so that the propellants charged inside the propulsion system  10  are extracted. 
         [0102]    In this instance, when a pair of the tool assemblies  440  reach a position where they abut to each other, one of the tool assemblies  440  moves backwards and the other one continuously moves forwards, so that the propellants inside the propulsion system  10  can be completely extracted. 
         [0103]    In this instance, cooling water is supplied through the driving shafts  452  of the driving unit  450 , and the supplied cooling water is provided to the tool assemblies, so that a worker can carry out work in safety because flame or heat generation is prevented while the tool assemblies  440  extract the propellants. 
         [0104]    Furthermore, while the propellants are extracted, the conveyer  710  of the propellant delivery unit  700  is operated to receive the propellants falling from both ends of the propulsion system  10  and stores them in the hopper (not shown). It is illustrated in  FIG. 14 . 
         [0105]    Finally, when the propellants inside the propulsion system  10  are all extracted through the above processes, the operation of the tool assemblies  400  is stopped after a pair of the tool assemblies  400  get out of and are separated from the propulsion system  10  by the operation of the moving unit  460 , and then, a pair of the fixing clamps  430  remove restriction to the propulsion system  10  while moving upwardly. 
         [0106]    After that, as shown in  FIG. 15 , when the third elevation cylinder  631  of the return unit  600  is operated to upwardly move the third return lever  630 , the propulsion system  10  is moved upwardly in a state where it is seated on the upper surface of the third return lever  630 , and then, the propulsion system  10  is delivered to the delivery unit  500 , which is located at the post process position, while rolling by the inclination angle formed by the third return lever  630 , so that treatment of the corresponding propulsion system  10  is completed. 
         [0107]    In the meantime, as described above, the propellant disposal process of the propulsion system  10  is controlled to be consecutively and repeatedly performed, so that a plurality of the propulsion systems  10  can be consecutively treated. 
         [0108]    Finally, the propellant disposal device for the propulsion system according to the present invention enables the propulsion systems and propellants to be reutilized and makes the disposal process safe. 
         [0109]    Moreover, the propellant disposal device for the propulsion system according to the present invention is not restricted to the above described embodiment and structure. 
         [0110]    For instance, the carry-in unit  100  and the delivery unit  500  may be units, like robot arms, for individually carrying in and delivering the propulsion systems  10  to their processing positions. 
         [0111]    Furthermore, the first main frame  210  of the cutting unit  200  and the second main frame  410  of the propellant extraction unit  400  may be formed separately from each other, but may be formed monolithically to thereby minimize the entire size of the disposal device and simplify the structure of the disposal device.