Abstract:
A device mounter head and a device mounting method using the device mounter head are provided. The device mounter head includes: a cylinder block unit including at least one cylinder in which a piston unit moving along the at least one cylinder is disposed; a pressure control unit which controls pressure inside and outside the at least one cylinder so that the piston moves along the at least one cylinder based on the controlled pressure; and a nozzle which is connected to the piston unit, and includes an inlet exposed to an atmosphere outside the cylinder block unit and a nozzle communication vent connected to the inlet and provided with the controlled pressure, wherein the inlet is configured to suck, grab and release a component using the controlled pressure.

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATION 
     This application claims priority from Korean Patent Application No. 10-2010-0056199, filed on Jun. 14, 2010, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. 
     BACKGROUND 
     1. Field 
     Apparatuses and methods consistent with exemplary embodiments relate to a device mounter head, and more particularly, to a device mounter head for mounting components on a substrate and the like after grabbing the components and transferring the components and a device mounting method using the device mounter. 
     2. Description of the Related Art 
     A device mounter head operates by grabbing electronic components, transferring the electronic components, and then mounting the electronic components on a substrate, as an apparatus for mounting electronic components such as semiconductors and the like on a substrate. 
     The device mounter head includes a nozzle spindle with an inlet port, and controls grabbing of electronic components and separating of the electronic components from the device mounter head by controlling air pressure of the inlet port. 
     However, a time delay may occur in a pipeline communicating with the inlet port of the nozzle spindle. In addition, the time delay may occur also in a solenoid valve disposed inside the pipeline. Like this, in a case where the time delay occurs in the device mounter head, it is not possible to control precisely a timing of forming or clearing negative pressure in the inlet port of the nozzle spindle. 
     The nozzle spindle is disposed in such a way that the nozzle spindle may move up and down and rotate, and because of the time delay problem mentioned above, an interval is necessary between a time of controlling a movement of the nozzle spindle and a time of controlling the air pressure of the inlet port. Accordingly, an operation speed of the device mounter head is slowed down. As a result, a time required for a device mounting process increases. 
     In addition, in the device mounter head, a control for the air pressure of the inlet port and a control for the movement of the nozzle spindle are independent from each other, and thus, hardware of the device mounter head is complicated. 
     SUMMARY 
     One or more exemplary embodiments provide a device mounter head having a simple structure and a simple controlling scheme, and for reducing effectively a time delay in controlling air pressure of an inlet port of a nozzle spindle. 
     One or more exemplary embodiments also provide a device mounting method using the device mounter head. 
     According to an aspect of an exemplary embodiment, there is provided a device mounter head. The device mounter head includes a cylinder block unit including a cylinder space, a first communication vent through which the cylinder space and another space provided inside or outside the cylinder block unit communicate with each other, and a second communication vent disposed below the first communication vent and through which the cylinder space and the other space communicate with each other. The device mounter head further includes a piston unit which moves between the first communication vent and the second communication vent in the cylinder space, a nozzle spindle disposed on a lower side of the piston unit, and in which an end having an inlet is protruded from the cylinder block unit and a nozzle communication vent communicating with the inlet is formed on a side of the nozzle spindle, a pressure controlling portion which provides predetermined pressure in the other space; and a valve unit which moves relative to the cylinder block unit and allows or blocks communication between the other space and at least one of the first communication vent and the second communication vent. 
     According to an aspect of another exemplary embodiment, there is provided a method of mounting a component on a substrate using the device mounter head, the method including positioning the valve unit in such a way that communication between the first communication vent and the other space is blocked and the second communication vent communicates with the other space, and then, lowering the nozzle spindle so that the nozzle spindle approaches the component; positioning the valve unit in such a way that the first and second communication vents communicate with the other space, and then, raising the nozzle spindle in a state where the nozzle spindle sucks and grabs the component; moving the device mounter head; positioning the valve unit in such a way that communication between the first communication vent and the other space is blocked and the second communication vent communicates with the other space, and then, lowering the nozzle spindle, in the state where the nozzle spindle sucks and grabs the component, so that the component is mounted on the substrate; clearing the state where the nozzle spindle sucks and grabs the component; and positioning the valve unit in such a way that the first communication vent communicates with the other space and communication between the second communication vent and the other space is blocked, and then raising the nozzle spindle. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspect will become more apparent by describing in detail exemplary embodiments with reference to the attached drawings, in which: 
         FIG. 1  is a perspective view of a device mounter head according to an exemplary embodiment; 
         FIG. 2  is a perspective view of the device mounter head of  FIG. 1  in which a part is cut out, according to an exemplary embodiment; 
         FIG. 3  is a cross-sectional view taken along a line III-III of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 4  is a perspective view illustrating a configuration of a part of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 5  is a perspective view illustrating the configuration of the part of  FIG. 4  together with a configuration of another part of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 6A  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially an operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 6B  is a diagram illustrating roughly an arrangement of a configuration of a part in a case where the device mounter head of  FIG. 1  is in the operation state illustrated in  FIG. 6A , according to an exemplary embodiment; 
         FIG. 7  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 8  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 9A  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 9B  is a diagram illustrating roughly an arrangement of a configuration of a part in a case where the device mounter head of  FIG. 1  is in the operation state illustrated in  FIG. 9A , according to an exemplary embodiment; 
         FIG. 10  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 11  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; 
         FIG. 12A  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , according to an exemplary embodiment; and 
         FIG. 12B  is a diagram illustrating roughly an arrangement of a configuration of a part in a case where the device mounter head of  FIG. 1  is in the operation state illustrated in  FIG. 12A , according to an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, exemplary embodiments will be described in detail with reference to the attached drawings. 
       FIG. 1  is a perspective view of a device mounter head according to an exemplary embodiment,  FIG. 2  is a perspective view of the device mounter head of  FIG. 1  in which a part is cut out, and  FIG. 3  is a cross-sectional view taken along a line III-III of the device mounter head of  FIG. 1 .  FIG. 4  is a perspective view illustrating a configuration of a part of the device mounter head of  FIG. 1 , and  FIG. 5  is a perspective view illustrating the configuration of the part of  FIG. 4  together with a configuration of another part of the device mounter head of  FIG. 1 .  FIG. 6A  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially an operation state of the device mounter head of  FIG. 1 , and  FIG. 6B  is a diagram illustrating roughly an arrangement of a configuration of a part in a case where the device mounter head of  FIG. 1  is in the operation state illustrated in  FIG. 6A .  FIG. 7  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , and  FIG. 8  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 .  FIG. 9A  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , and  FIG. 9B  is a diagram illustrating roughly an arrangement of a configuration of a part in a case where the device mounter head of  FIG. 1  is in the operation state illustrated in  FIG. 9A .  FIG. 10  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , and  FIG. 11  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 .  FIG. 12A  is a cross-sectional view illustrating roughly a part of the device mounter head of  FIG. 1  to show partially another operation state of the device mounter head of  FIG. 1 , and  FIG. 12B  is a diagram illustrating roughly an arrangement of a configuration of a part in a case where the device mounter head of  FIG. 1  is in the operation state illustrated in  FIG. 12A . 
     Referring to  FIGS. 1 through 12B , a device mounter head  1  according to an exemplary embodiment includes a cylinder block unit  100 , a piston unit  200 , a nozzle spindle  300 , a pressure reducing portion, and a valve unit  500 . 
     The cylinder block unit  100  is formed in a cylindrical shape as illustrated in  FIGS. 2-4 , and a guide protrusion  160  formed in a spiral shape is disposed on an outer circumference side of the cylinder block unit  100 . On the cylinder block unit  100 , a vertical spindle  150 , which is disposed in a vertical direction and in which a hollow portion is formed, is fixed and joined to the cylinder block unit  100 . A vent  152 , communicating with the hollow portion of the vertical spindle  150 , is formed in a lower side of the vertical spindle  150  near an upper surface of the cylinder block unit  100 . Meanwhile, the vertical spindle  150  is disposed so as to be moved up and down and rotated by a driving means (not shown) so that the cylinder block unit  100  may move up and down and rotate. 
     As illustrated in  FIG. 3 , a plurality of cylinder spaces  110 , having a cylindrical pillar shape and formed by extending in up and down directions, are formed in the cylinder block unit  100 . A plurality of first communication vents  112  and a plurality of second communication vents  114  are formed in the cylinder block  100 , and the plurality of first communication vents  112  are disposed so as to correspond to the plurality of cylinder spaces  110 , respectively. The plurality of second communication vents  114  are also disposed so as to correspond to the plurality of cylinder spaces  110 , respectively. That is, one of the first communication vents  112  and one of the second communication vents  114  are disposed so as to correspond to one of the cylinder spaces  110 . 
     The first communication vents  112  are formed so as to penetrate from the outer circumference side of the cylinder block unit  100  into the cylinder spaces  110  so that the cylinder spaces  110  and a space outside the cylinder block unit  100  communicate with each other through the first communication vents  112 . 
     The second communication vents  114 , similar to the first communication vents  112 , are formed so as to penetrate from the outer circumference side of the cylinder block unit  100  into the cylinder spaces  100  so that the cylinder spaces  110  and the space outside the cylinder block unit  100  communicate with each other through the second communication vents  114 . The second communication vents  114  are disposed below the first communication vents  112 . 
     The plurality of first communication vents  112  are disposed in a spiral shape along the outer circumference side of the cylinder block unit  100 , and the plurality of second communication vents  114  are also disposed in a spiral shape parallel to the spiral shape of the first communication vents  112 . 
     Referring to  FIGS. 2 and 3 , a sidewall and an upper side of the cylinder block unit  100  are surrounded by a housing  502  with respect to a space formed between the cylinder block unit  100  and the housing  502 . 
     As illustrated in  FIG. 3 , piston units  200  are disposed in the respective cylinder spaces  110 , and disposed so as to be moved up and down between the respective first communication vents  112  and the respective second communication vents  114 . Outer circumference sides of the piston units  200  are configured to tightly contact inner circumference sides of the respective cylinder spaces  110 , and each of the cylinder spaces  110  is divided into an upper space and a lower space by a corresponding piston unit of the piston units  200 . 
     Nozzle spindles  300  are used to suck and grab components, are fixed and joined to lower sides of the respective piston units  200  as illustrated in  FIG. 3 , and are moved in the up and down directions together with the respective piston units  200 . Lower parts of the nozzle spindles  300  are placed protruding under a lower side of the cylinder block unit  100 , and inlet ports  310  for sucking and grabbing the components are formed at ends of the lower parts of the nozzle spindles  300 , respectively. The inlet ports  310  of the nozzle spindles  300  extend to hollow portions formed inside the nozzle spindles  300 , and nozzle communication vents  320  communicating with the hollow potions of the nozzle spindles  300  are formed in sides of the nozzle spindles  300 , respectively. Accordingly, the nozzle communication vents  320  communicate with the inlet ports  310  through the hollow portions, respectively. 
     The nozzle communication vents  320  move in the up and down directions as the nozzle spindles  300  move in the up and down directions, respectively. When the nozzle spindles  300  move by a predetermined distance in the down direction, as illustrated in  FIG. 7 , the nozzle communication vents  320  leave the cylinder spaces  110  of the cylinder block unit  100  and enter a space below the lower side of the cylinder block unit  100 . When the nozzle communication vents  320  are exposed to an outer atmosphere A, air pressure of the hollow portions of the nozzle spindles  300  and air pressure of the inlet ports  310  become equal to air pressure of the outer atmosphere A. 
     The pressure reducing portion is used to form a negative pressure space  410  in a space outside the cylinder spaces  110  of the cylinder block unit  100 , that is, in the space formed between the cylinder block unit  100  and the housing  502  in the present exemplary embodiment. In the present exemplary embodiment, as illustrated in  FIG. 3 , a pressure reducing pump  400  is prepared as the pressure reducing portion. The pressure reducing pump  400  removes air from the hollow portion of the vertical spindle  150 . Because the hollow portion of the vertical spindle  150  communicates with the negative pressure space  410  via the vent  152 , the negative pressure space  410  having a negative pressure is formed between the outer circumference side of the cylinder block unit  100  and the housing  502  via the pressure reducing pump  400 . The pressure reducing pump  400  may be a centrifugal pump, an axial flow pump or the like. 
     The valve unit  500 , as illustrated in  FIGS. 2 and 3 , is disposed between the outer circumference side of the cylinder block unit  100  and the negative pressure space  410 , and wraps closely around the outer circumference side of the cylinder block unit  100 . In a state where the valve unit  500  tightly contacts the outer circumference side of the cylinder block unit  100 , as illustrated in  FIG. 5 , the valve unit  500  is disposed so as to be moved relative to the cylinder block unit  100  in one side direction R 1  and another side direction R 2 . 
     The valve unit  500  is formed together with the housing  502  in a single body, and moved relative to the cylinder block unit  100  together with the housing  502 . In the present exemplary embodiment, as illustrated in  FIG. 3 , a motor M is joined to a gear unit  155  formed in the housing  502 , to move the valve unit  500  and the housing  502  relative to the cylinder block unit  100 . 
     In the present exemplary embodiment, although the valve unit  500  and the housing  502  are formed in a single body, the valve unit  500  and the housing  502  may be formed separately, and the valve unit  500  may be disposed so as to be moved relative to the cylinder block unit  100  independently of the housing  502 . 
     As illustrated in  FIG. 5 , a first penetrating vent  510 , a second penetrating vent  520 , a third penetrating vent  530 , and a fourth penetrating vent  540  are formed in the valve unit  500 . 
     The first penetrating vent  510  communicates with the negative pressure space  410 , and extends in the one side direction R 1  on a relative movement path of the first communication vents  112  in the valve unit  500 . That is, the first penetrating vent  510 , as well as the first communication vents  112 , is formed in a spiral shape with a relatively long length. 
     The second penetrating vent  520  is formed in the valve unit  500  apart from the first penetrating vent  510 , and extends in the other side direction R 2  on the relative movement path of the first communication vents  112  in the valve unit  500 . 
     The third penetrating vent  530  is formed between the first penetrating vent  510  and the second penetrating vent  520 . That is, the first penetrating vent  510  and the second penetrating vent  520  are disposed in forms extending in directions opposite to each other while the third penetrating vent  530  is centered therebetween. The third penetrating vent  530  is disposed on the relative movement path of the first communication vents  112  together with the first penetrating vent  510  and the second penetrating vent  520 , and thus the first through third penetrating vents  510 ,  520 , and  530  communicate with the first communication vents  112  in turn as the valve unit  500  moves in a spiral manner. Differently from the first penetrating vent  510  and the second penetrating vent  520 , the third penetrating vent  530  does not communicate with the negative pressure space  410  but with a space outside the housing  502 . That is, the third penetrating vent  530  communicates with the outer atmosphere A whose air pressure is higher than that of the negative pressure space  410 . 
     The fourth penetrating vent  540  is disposed below the first through third penetrating vents  510 ,  520 , and  530  so as to correspond to the second communication vents  114 , and the fourth penetrating vent  540  communicates with the negative pressure space  410 . The fourth penetrating vent  540 , as illustrated in  FIG. 5 , is formed so as to communicate with the second communication vents  114  when the valve unit  500  is placed in such a way that the first communication vents  112  communicate with the third penetrating vent  530 , and extends in the one side direction R 1  parallel to the first communication vents  112 . 
     The fourth penetrating vent  540  communicates with a portion of the second communication vents  114  or closes a portion of the second communication vents  114 , as the valve unit  500  moves relative to the cylinder block unit  100 . Referring to  FIG. 5 , the fourth penetrating vent  540  communicates with the second communication vents  114  when the first communication vents  112  communicates with the first penetrating vent  510 , communicates with the second communication vents  114  when the first communication vents  112  communicates with the third penetrating vent  530 , and closes the second communication vents  114  directly below the first communication vents  112  when the first communication vents  112  communicates with the second penetrating vent  520 . 
     As explained above, a specific cylinder space  110  may be in a state (below, this state is represented as a P 1  state for sake of convenience) where its first communication vent  112  communicates with the outer atmosphere A and its second communication vent  114  communicates with the negative pressure space  410 , a state (below, this state is represented as a P 2  state for sake of convenience) where both its first communication vent  112  and its second communication vent  114  communicate with the negative pressure space  410 , or a state (below, this state is represented as a P 3  state for sake of convenience) where its first communication vent  112  communicates with the negative pressure space  410  and its second communication vent  114  is closed. That is, communication between the first and second communication vents  112  and  114  of the specific cylinder space  110  and the negative pressure space  410  is allowed or blocked as the first through fourth penetrating vents  510 ,  520 ,  530 , and  540  move together with the valve unit  500 . 
     Next, a device mounting method using the device mounter head  1 , according to an exemplary embodiment, and an effect of the method will be explained below. 
     The device mounting method using the device mounter head  1  according to the present exemplary embodiment includes a lowering operation, a grabbing and raising operation, a moving operation, a grabbing and lowering operation, a grab cancelling operation, and a raising operation. 
     As illustrated in  FIG. 6A , the lowering operation is an operation of positioning one of the nozzle spindles  300  directly over an upper side of a component C such as a semiconductor chip and of lowering the one nozzle spindle  300 . 
     When the nozzle spindle  300  is positioned directly over the upper side of the component C, the valve unit  500  is rotated relative to the cylinder block unit  100  until the third penetrating vent  530  of the valve unit  500  communicates with the first communication vent  112  of the cylinder space  110  corresponding to the nozzle spindle  300 . Here, the device mounter head  1  may be configured in such a way that the valve unit  500  is rotated in a state where the cylinder block unit  100  is fixed, or, on the contrary, the cylinder block unit  100  is rotated in a state where the valve unit  500  is fixed. 
     As illustrated in  FIG. 6B , when the valve unit  500  is positioned in such a way that the third penetrating vent  530  of the valve unit  500  communicates with the first communication vent  112 , the second communication vent  114  of the cylinder space  110  communicates with the fourth penetrating vent  540 . That is, the specific cylinder space  110  is in the P 1  state. In the P 1  state, the first communication vent  112  communicates with the outer atmosphere A, and communication between the first communication vent  112  and the negative pressure space  410  is blocked. Because the second communication vent  114  communicates with the negative pressure space  410 , a space below the piston unit  200  corresponding to the cylinder space  110  has a pressure lower than that of a space above the piston unit  200 . Accordingly, the piston unit  200  moves down, and air flows in the first communication vent  112  as illustrated by an arrow formed of a dotted line in  FIG. 6A . Because the nozzle communication vent  320  of the nozzle spindle  300  is positioned under the piston unit  200  in the cylinder space  110  and the lower space of the cylinder space  110 , that is, the space below the piston unit  200 , communicates with the negative pressure space  410 , negative pressure is formed in the inlet  310  of the nozzle spindle  300 . Accordingly, as illustrated by an arrow formed of a dotted line in  FIG. 6A , air flows in the inlet  310 . 
     The nozzle spindle  300  may contact the component C in this state and may suck and grab the component C, but the nozzle spindle  300  may instead contact the component C in a state where the nozzle spindle  300  loses a sucking and grabbing power. The nozzle communication vent  320  should be exposed to the outer atmosphere A to cancel the sucking and grabbing power of the nozzle spindle  300 . That is, as illustrated in  FIG. 7 , the nozzle communication vent  320  of the nozzle spindle  300  should leave the lower side of the cylinder block unit  100  by lowering continuously the nozzle spindle  300  in the P 1  state. To this end, by positioning the cylinder block unit  100  high enough from the component C, the nozzle spindle  300  may protrude downward sufficiently to expose the nozzle communication vent  320 . 
     When the nozzle communication vent  320  is exposed to the outer atmosphere A, and thus, the inlet  310  loses the sucking and grabbing power, the nozzle spindle  300  contacts the component C in a state where the nozzle spindle  300  does not have the sucking and grabbing power. Like this, it may be desirable that the nozzle spindle  300  loses the sucking and grabbing power before it makes a contact with the component C, because the sucking and grabbing power of the nozzle spindle  300  may raise the component C up in the air before it gets stuck to nozzle spindle  300 , and this may cause difficulties in controlling a sticking position of the component C. 
     Next, the grabbing and raising operation is performed. The grabbing and raising operation is an operation of raising the nozzle spindle  300  in a state where the nozzle spindle  300  sucks and grabs the component C when the nozzle spindle  300  contacts the component C. 
     When the end of the nozzle spindle  300  contacts the component C, the cylinder block unit  100  is moved in the down direction by a predetermined distance so that the nozzle communication vent  320  of the nozzle spindle  300  is inserted again into the cylinder space  110  of the cylinder block unit  100 . Here, the valve unit  500  and the housing  502  are also moved together with the cylinder block unit  100  in the down direction. When the cylinder block unit  100  is moved in the down direction, air of the cylinder space  110  in the space above the piston unit  200  flows into the outer atmosphere A in a direction indicated by an arrow formed of a dotted line in  FIG. 8 . Like this, when the nozzle communication vent  320  is inserted again into the cylinder space  110 , negative pressure is formed in the inlet  310 , and thus, the component C is sucked and grabbed. 
     When the component C is sucked and grabbed on the end of the nozzle spindle  300 , by relatively rotating the valve unit  500  in the other side direction R 2 , as illustrated in  FIG. 9B , the first communication vent  112  communicates with the first penetrating vent  510 , and the second communication vent  114  communicates with the fourth penetrating vent  540 . That is, the cylinder space  110  is in the P 2  state. When the cylinder space  110  is in the P 2  state, both the first communication vent  112  and the second communication vent  114  communicate with the negative pressure space  410 . Accordingly, a state where the component C is sucked and grabbed on the nozzle spindle  300  is maintained, and air of the space above the piston unit  200  flows out from the cylinder block unit  100  as indicated by an arrow formed of a dotted line in  FIG. 9A . Accordingly, the piston unit  200  is moved in the up direction, and the nozzle spindle  300  maintains continuously a state where the nozzle spindle  300  sucks and grabs the component C. 
     Like this, when the valve unit  500  is rotated more relatively in the other side direction R 2  shown in  FIG. 5 , the third penetrating vent  530  communicates with the first communication vent  112  of an adjacent cylinder space  110 , and thus, an adjacent nozzle spindle  300  performs again the above process. For example, when the valve unit  500  moves more relatively in the other side direction R 2  in a state illustrated in  FIG. 5 , another first communication vent  112   b  adjacent to a specific first communication vent  112   a  in the other side direction R 2  communicates with the third penetrating vent  530 , and a second communication vent  114   b  directly under the first communication vent  112   b  communicates with the fourth penetrating vent  530 . Accordingly, the nozzle spindle  300  corresponding to the first communication vent  112   b  adjacent to the specific first communication vent  112   a  descends. Here, a state where the specific first communication vent  112   a  communicates with the first penetrating vent  510  and a second communication vent  114   a  located directly under the specific first communication vent  112   a  communicates with the fourth penetrating vent  540 , is maintained, and thus the nozzle spindle  300  corresponding to the specific first communication vent  112   a  maintains a state where the nozzle spindle  300  sucks and grabs the component C and a state where the nozzle spindle  300  is raised. 
     All nozzle spindles raise components in turn, as the valve unit  500  is rotated continuously in the other side direction R 2 . 
     Next, the moving operation is performed. The moving operation is an operation of moving the device mounter head  1  to a location where a component is to be put down. By controlling a driving means for driving the device mounter head  1 , the device mounter head  1  is moved in such a way that the nozzle spindle  300  is positioned directly over the location where the component C is to be put down. Here, the cylinder space  110  corresponding to the nozzle spindle  300  and all the other cylinder spaces  110  are in the P 2  state. 
     Next, the grabbing and lowering operation is performed, and the grabbing and lowering operation is an operation of lowering the nozzle spindle  300  in a state where the component C is sucked and grabbed on the nozzle spindle  300 . As illustrated in  FIG. 10 , after the nozzle spindle  300  is positioned directly above the location where the component C is to be put down, the first communication vent  112  of the cylinder space  110  communicates with the third penetrating vent  530  of the valve unit  500  by moving the valve unit  500  in the one side direction R 1 . That is, the cylinder space  110  is in the P 1  state. Accordingly, as indicated by an arrow formed of a dotted line in  FIG. 10 , air flows into the cylinder space  110  of the space above the piston unit  200 , the lower space of the cylinder space  110  communicates with the negative pressure space  410 , and thus, the piston unit  200  and the nozzle spindle  300  are moved in the down direction. 
     When the nozzle spindle  300  moves continually in the down direction, the component C touches a substrate or the like. Here, it is desirable to position the cylinder block unit  100  at a predetermined height apart from the substrate so that the nozzle communication vent  320  of the nozzle spindle  300  does not leave the lower side of the cylinder block unit  100 . When the nozzle communication vent  320  is exposed to the outer atmosphere A before the component C reaches safely the substrate, the component C may drop from the nozzle spindle  300 , and may not reach safely a desired position. 
     Next, the grab cancelling operation is performed. The grab cancelling operation is an operation of cancelling the operation in which the nozzle spindle  300  sucks and grabs the component C. In the present exemplary embodiment, the grab cancelling operation further includes an operation of exposing the nozzle communication vent  320  to the outer atmosphere A so that negative pressure of the inlet  310  is cleared. The operation of exposing the nozzle communication vent  320  includes an operation of raising the cylinder block unit  100  relative to the nozzle spindle  300  in a state where the nozzle spindle  300  is stopped. That is, in the operation of exposing the nozzle communication vent  320 , in a state where the component C reaches safely the substrate or the like, as in  FIG. 11 , the cylinder block unit  100  is moved by a predetermined distance in the up direction so that the nozzle communication vent  320  of the nozzle spindle  300  leaves of the cylinder space  110 . Here, the valve unit  500  and the housing  502  are also moved together with the cylinder block unit  100 . Because the cylinder space  110  is in the P 1  state, the nozzle spindle  300  maintains a position thereof, and only the cylinder block unit  100 , the valve unit  500 , and the housing  502  are moved in the up direction. When the nozzle communication vent  320  is exposed to the outer atmosphere A, the end of the nozzle spindle  300  loses the sucking and grabbing power. Accordingly, the nozzle spindle  300  and the component C are separated from each other. 
     Next, the raising operation is performed. The raising operation is an operation of raising the nozzle spindle in a state where the nozzle spindle  300  and the component C are separated from each other. In the raising operation, as illustrated in  FIG. 12B , the first communication vent  112  communicates with the second penetrating vent  520  by further moving the valve unit  500  in the one side direction R 1 . When the valve unit  500  is positioned in such a way that the first communication vent  112  communicates with the second penetrating vent  520 , the second communication vent  114  is closed. That is, the cylinder space  110  is in the P 3  state. Accordingly, the upper space of the cylinder space  110 , that is, the space above the piston unit  200 , communicates with the negative pressure space  410 , and the lower space of the cylinder space  110 , that is, the space below the piston unit  200  communicates with the outer atmosphere A. Accordingly, air flows in a direction indicated by an arrow formed of a dotted line in  FIG. 12A , and the nozzle spindle  300  puts the component C down and moves in the up direction. 
     Like this, when the valve unit  500  is moved continually in the one side direction R 1 , all the nozzle spindles may mount components on the substrate. 
     Meanwhile, in the present exemplary embodiment, a case where a high pressure space is the outer atmosphere A is explained, but the high pressure space may be a space in which high pressure is maintained by a pressure pump. 
     In addition, in the present exemplary embodiment, a case where a plurality of cylinder spaces is disposed in the cylinder block unit  100  is explained, but only one cylinder space may be formed. 
     In addition, in the present exemplary embodiment, a case where the negative space  410  is formed in the space outside the cylinder block unit  100  is explained, but a device mounter head according to the inventive concept may be embodied in another form. For example, the inventive concept may be embodied in a form where a hollow portion is formed in a central part of a cylinder block unit, first and second communication vents are formed so as to penetrate into the hollow portion, and negative pressure acts upon the hollow portion. In this case, a valve unit may be disposed between the hollow portion and the cylinder block unit and also disposed in a form where the valve unit tightly contacts the cylinder block unit. 
     While the inventive concept has been particularly shown and described with reference to the exemplary embodiments, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the inventive concept as defined by the following claims.