Patent Publication Number: US-2022234217-A1

Title: Nozzle replacement table unit

Description:
TECHNICAL FIELD 
     The present specification discloses a nozzle replacement table unit. 
     BACKGROUND ART 
     In the conventional art, as a nozzle replacement table unit of this type, there has been proposed a unit including a base member fixed to a component mounting device and a nozzle holding member detachably attached to the base member (refer to, for example, Patent Literature 1). The base member has a rectangular flat plate section, a fixed locking section extending upward from an end portion on the rear end side of the flat plate section, and a movable locking section provided on a main support column extending perpendicularly downward from an end portion on the front end side of the flat plate section. A lower end portion of the movable locking section is pivotally supported at the main support column so as to be swingable in a front-rear direction, and an upper end portion thereof is biased toward the rear end by a biasing spring. A pair of left and right protruding section protruding to the rear end side of the flat plate section are provided on an upper portion of the movable locking section, and an operation section extending away from the rear end of the flat plate section in order to perform a swinging operation of the movable locking section is provided on the upper end portion of the movable locking section. The nozzle holding member is a rectangular plate member and has multiple nozzle holding holes into which nozzles are inserted from the above. In order to attach the nozzle holding member to the base member, first, an operator tilts the rear end portion of the nozzle holding member to be below the front end portion, and causes the rear end portion to come into contact with (abut on) the fixed locking section of the base member. Next, the operator places the nozzle holding member in the horizontal posture while pressing the rear end portion of the nozzle holding member against the fixed locking section of the base member, and causes the lower surface of the nozzle holding member to contact the upper surface of the flat plate section of the base member while performing an operation of the operation section with the hand to swing the movable locking section of the base member in the direction away from the rear end. The operator take his hand off the movable locking section in a state in which the nozzle holding member is in the horizontal posture and the lower surface thereof is in contact with the upper surface of the flat plate section of the base member. Consequently, the movable locking section is swung by the biasing force of the biasing spring and the pair of left and right protruding sections comes into contact with the front end tilted portion of the nozzle holding member from above, so that the nozzle holding member is coupled to the base member. In order to detach the nozzle holding member from the base member, the operator swings the movable locking section with the hand against the biasing force of the biasing spring, then lifts the front end portion of the nozzle holding member while pressing the rear end portion of the nozzle holding member against the fixed locking section of the base member, and then pulls the nozzle holding member forward. 
     PATENT LITERATURE 
     Patent Literature 1: JP-A-2009-117580 
     BRIEF SUMMARY 
     Technical Problem 
     However, in the nozzle replacement table unit disclosed in Patent Literature 1, when the nozzle holding member is attached to or detached from the base member, it is necessary to hold the nozzle holding member with one hand and operate the movable locking section (operation section) with the other hand, and thus there is a problem that the operability is poor. 
     It is a principal object of the present disclosure to further improve the operability when a nozzle container is detached from a pedestal. 
     Solution to Problem 
     The present disclosure employs the following means in order to achieve the above principal object. 
     According to the present disclosure, there is provided a nozzle replacement table unit including a nozzle container configured to accommodate multiple nozzles for replacement; a pedestal to which the nozzle container is detachably attached; a fixing mechanism configured to fix the nozzle container to the pedestal; and an operation section configured to release fixing by the fixing mechanism, in which the operation section is provided in the nozzle container. 
     In the nozzle replacement table unit according to the present disclosure, in a case where the nozzle container accommodating multiple replacement nozzles is detachably fixed to the pedestal by the fixing mechanism, the operation section for releasing the fixing by the fixing mechanism is provided in the nozzle container. According to this nozzle replacement table unit, since an operator can detach the nozzle container from the pedestal by operating the operation section with one hand to release the fixing by the fixing mechanism while grasping the nozzle container with the hand, the operability can be further improved. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a configuration diagram schematically illustrating a configuration of component mounting system  10 . 
         FIG. 2  is an appearance perspective view of component mounter  20 . 
         FIG. 3  is a top view of component mounter  20 . 
         FIG. 4  is an explanatory diagram illustrating a state of component mounting system  10  at the time of a setup change or the occurrence of error. 
         FIG. 5  is an appearance perspective view of nozzle replacement table unit  40  according to the present embodiment. 
         FIG. 6  is a side view of nozzle replacement table unit  40 . 
         FIG. 7  is an appearance perspective view of pedestal  50 . 
         FIG. 8  is a perspective view in which nozzle container  60  is viewed from a bottom surface thereof. 
         FIG. 9  is a partially enlarged view including hook mechanism  70  of nozzle replacement table unit  40 . 
         FIG. 10  is a partially enlarged view including clamp mechanism  80  of nozzle replacement table unit  40 . 
         FIG. 11  is a schematic configuration diagram of clamp mechanism  80 . 
         FIG. 12  is an explanatory diagram illustrating an operation state of nozzle containers  60  and  60 B. 
         FIG. 13  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
         FIG. 14  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
         FIG. 15  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
         FIG. 16  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
         FIG. 17  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
         FIG. 18  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
         FIG. 19  is an explanatory diagram illustrating a state in which nozzle container  60  is attached to pedestal  50 . 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Next, embodiments of the present disclosure will be described with reference to the drawings. 
       FIG. 1  is a configuration diagram schematically illustrating a configuration of component mounting system  10 .  FIG. 2  is an appearance perspective view of component mounter  20 .  FIG. 3  is a top view of component mounter  20 .  FIG. 4  is an explanatory diagram illustrating a state of component mounting system  10  at the time of a setup change or the occurrence of an error. In  FIGS. 1 and 2 , a left-right direction is set as an X-axis direction, a front-rear direction is set as a Y-axis direction, and an up-down direction is set as a Z-axis direction. 
     As illustrated in  FIG. 1 , component mounting system  10  includes management device  11 , printing machine  12 , printing inspection machine  13 , multiple component mounters  20 , and a mounting inspection machine (not illustrated). Management device  11  manages the entire system. Printing machine  12  prints a solder on board S to form a circuit pattern. Printing inspection machine  13  inspects a state of the solder printed by printing machine  12 . Component mounters  20  are respectively placed on bases  15  aligned along a conveyance direction (X direction) of board S and mount components on board S. The mounting inspection machine inspects mounting states of the components mounted by component mounter  20 . Printing machine  12 , printing inspection machine  13 , multiple component mounters  20 , and the mounting inspection machine are provided to be arranged in the conveyance direction of board S to configure a production line. 
     As illustrated in  FIG. 2 , component mounter  20  includes feeder  31 , board conveyance device  32 , head  33 , head moving device  34 , part camera  35 , mark camera  36 , and nozzle replacement table unit  40  according to the present embodiment including nozzle container  60  that accommodates a replacement suction nozzle. Feeder  31  includes, for example, a reel on which a tape accommodating multiple components is wound, and is configured as a tape feeder that supplies components by drawing the tape from the reel and feeding the tape by a predetermined amount. Board conveyance device  32  includes, for example, a pair of belts arranged in the Y-axis direction, and is configured as a belt conveyor device that conveys board S on the belt in the X-axis direction by driving the pair of belts. Head  33  is attached with a suction nozzle, and picks up a component supplied by feeder  31  with the suction nozzle. Head moving device  34  is configured as, for example, an orthogonal robot including a Y-axis slider movable in the Y-axis direction along a Y-axis rail installed in an upper portion of housing  21 , and an X-axis slider movable in the X-axis direction along an X-axis rail installed in the Y-axis slider. Head  33  is attached to the X-axis slider, and is movable in the X-axis direction and the Y-axis direction by head moving device  34 . In the present embodiment, multiple types of heads  33  may be attached to the X-axis slider. Multiple types of heads  33  include, for example, heads to which different numbers of suction nozzles are attachable, heads movable up and down, and heads that are not movable up and down. Part camera  35  is installed in a space between feeder  31  and board conveyance device  32 , and images a component from below when the suction nozzle that has picked up the component passes over part camera  35 . Mark camera  36  is attached to head  33  so as to be movable in the X-axis direction and the Y-axis direction by head moving device  34 , and images a reference mark (not illustrated) added to the upper surface of board S above board S in order to recognize a position of board S that has been conveyed in. When the suction nozzle attached to head  33  is replaced, mark camera  36  images a code (not illustrated) added to the upper surface of nozzle container  60  above nozzle container  60  in order to recognize the type of nozzle container  60  on which mark camera  36  is mounted. 
     A pair of rails (not illustrated) extending in a direction (the Y-axis direction) orthogonal to the board conveyance direction (the X-axis direction) are provided on the upper surface of base  15 . Component mounter  20  is movable in the Y-axis direction along the pair of rails with respect to base  15 . As illustrated in  FIG. 4 , opening  210  is formed in a side surface (a surface in the board conveyance direction) of housing  21  of component mounter  20 . When a setup change or an error occurs, the operator pulls target component mounter  20  toward the front of base  15 , and thus performs necessary work on component mounter  20  via opening  21   o.    
     Nozzle replacement table unit  40  of the present embodiment accommodates multiple types of replacement suction nozzles N.  FIG. 5  is an appearance perspective view of nozzle replacement table unit  40  of the present embodiment.  FIG. 6  is a side view of nozzle replacement table unit  40 .  FIG. 7  is an appearance perspective view of pedestal  50 .  FIG. 8  is a perspective view in which nozzle container  60  is viewed from a bottom surface thereof.  FIG. 9  is a partially enlarged view including hook mechanism  70  of nozzle replacement table unit  40 .  FIG. 10  is a partially enlarged view including clamp mechanism  80  of nozzle replacement table unit  40 .  FIG. 11  is a schematic configuration diagram of clamp mechanism  80 .  FIG. 12  is an explanatory diagram illustrating an operation state of nozzle containers  60  and  60 B. 
     As illustrated in  FIG. 3 ,  FIG. 5 , and  FIG. 6 , nozzle replacement table unit  40  includes pedestal  50  fixed in the space between feeder  31  and board conveyance device  32  so as to be arranged with part camera  35  in the X-axis direction, and nozzle container  60  detachable from pedestal  50 . 
     As illustrated in  FIG. 7 , pedestal  50  includes rectangular flat plate  51 . Stoppers  52   a  and  52   b,  guide pins  54   a  and  54   b,  seating sensors  55   a  and  55   b,  and reception cylinder  88  are provided on an upper surface of plate  51 . The stoppers  52   a  and  52   b  are formed in a cylindrical shape protruding upward from the upper surface of plate  51 , and are spaced in a lateral direction of plate  51  with respect to the first end portion (front end portion) in a longitudinal direction of plate  51 . Guide pins  54   a  and  54   b  are formed in a cylindrical shape protruding upward from the upper surface of plate  51  and having tapered distal end portions. One guide pin  54   a  is provided at a position on the front end portion side of plate  51  and deviated further toward the second end portion (rear end portion) side than stoppers  52   a  and  52   b  in the longitudinal direction of plate  51 . The other guide pin  54   b  is provided at a rear end portion of plate  51 . Seating sensors  55   a  and  55   b  are provided to be arranged in the longitudinal direction of plate  51  between the front end portion and the rear end portion of plate  51 . Reception cylinder  88  is provided at the rear end portion of plate  51 , and is formed in a cylindrical shape protruding upward from the upper surface of plate  51 . 
     As illustrated in  FIG. 8 , nozzle container  60  includes main body  61 , front end side leg section  62 , rear end side leg section  63 , pole  64 , and protruding section  65 . Main body is formed in a substantially rectangular parallelepiped shape. Multiple accommodation holes (not illustrated) capable of accommodating replacement suction nozzles N are formed in an upper surface of main body  61 . 
     As illustrated in  FIG. 8 , front end side leg section  62  protrudes downward from the first end portion (front end portion) of main body  61  in the longitudinal direction with a width of main body  61  in the lateral direction. Front end side leg section  62  are provided with insertion groove  62   a  through which hook mechanism  70  is inserted and guide groove  62   b  into which guide pin  54   a  is fitted when nozzle container  60  is attached to pedestal  50 , which are provided to extend in the longitudinal direction of nozzle container  60  from front surface  622 . Cylindrical pole  64  is provided inside insertion groove  62   a  to extend in nozzle container  60  in the lateral direction. An opening edge portion of guide groove  62   b  at front surface  622  is chamfered to expand in a tapered manner toward front surface  622 . 
     As illustrated in  FIG. 8 , rear end side leg section  63  protrudes downward from the second end portion (rear end portion) of main body  61  in the longitudinal direction with the width of main body  61  in the lateral direction. Rear end side leg section  63  is provided with fixing hole  63   a  that penetrates in the up-down direction and to which clamp mechanism  80  is fixed. Rear end side leg section  63  is also provided with guide hole  63   b  recessed upward from lower surface  631  and into which guide pin  54   b  is fitted. An opening edge portion of guide hole  63   b  is chamfered to expand in a tapered manner toward lower surface  631 . 
     As illustrated in  FIG. 8 , protruding portion  65  protrudes downward from a space between the front end portion and the rear end portion of the bottom surface (lower surface) of main body  61  with a width of main body  61  in the lateral direction, and is configured as a sensed section sensed by either of seating sensor  55   a  or  55   b.    
     Here, as illustrated in  FIG. 12 , nozzle container  60  is configured to be movable up and down to a raised position and a lowered position by a driving device (not illustrated) (for example, an air cylinder). For example, in a case where a board on which components are mounted is produced, nozzle container  60  is retracted to the lowered position such that the suction nozzle or a component picked up by the suction nozzle does not interfere with replacement suction nozzle N accommodated in nozzle container  60  (refer to a solid line in the drawing) when head  33  is moved to an upper side of the component supplied from feeder  31  to pick up the component with the suction nozzle and transfer the component to an upper side of board S. Nozzle container  60  is moved to the lifted position(refer to dashed lines in the drawing) in a case where the suction nozzle attached to head  33  is replaced. Here, component mounter  20  performs, before the suction nozzle is replaced, a code reading operation for reading a code added to the upper surface of nozzle container  60  with mark camera  36  in order to recognize the type of mounted nozzle container  60 . In the present embodiment, the nozzle container includes exposed type nozzle container  60  (refer to  FIG. 5 ,  FIG. 6 , and  FIG. 12( a ) ) that accommodates a suction nozzle in a state in which a part of the suction nozzle is exposed upward, and non-exposed type nozzle container  60 B that accommodates a suction nozzle in a state in which the suction nozzle is not exposed upward. In a case where a code of exposed type nozzle container  60  is read, the code reading operation is performed in a state in which nozzle container  60  is located at the lifted position since the code deviates from a range of the depth of field of mark camera  36  at the lowered position (retraction position). In a case where a code of non-exposed type nozzle container  60 B is read, the code reading operation is performed in a state in which the nozzle container is located at the lowered position since the lowered position (retraction position) can be made higher than that of the exposed type nozzle container within a range that does not interfere with the suction nozzle attached to head  33  or a component picked up by the suction nozzle. Therefore, before performing the operation of reading the code added to the nozzle container by using mark camera  36 , component mounter  20  is required to recognize which of the above types the nozzle container is in order to determine an imaging height of mark camera  36  (the up-down position of head  33 ). In the present embodiment, protruding portion  65  (sensed section) is formed at a position where the protruding portion  65  is sensed by the first seating sensor  55   a  of seating sensors  55   a  and  55   b  when exposed type nozzle container  60  is seated on pedestal  50 , whereas the protruding portion is formed at a position where the protruding portion is sensed by the second seating sensor  55   b  of seating sensors  55   a  and  55   b  when non-exposed type nozzle container  60 B is seated on pedestal  50 . Consequently, component mounting device  20  can identify the type of nozzle container in advance with the simple configuration in which the protruding portion is provided in the nozzle container. 
     As illustrated in  FIG. 7 , hook mechanism  70  is disposed in recess  51   a  formed at the center of the front end portion of plate  51 . As illustrated in  FIG. 7  and  FIG. 9 , hook mechanism  70  includes hook member  71  and torsion spring  72 . Rotation shaft  73  supported by support member  53  fixed to plate  51  and extending in the lateral direction of plate  51  is provided at a lower part of hook member  71 . Hook member  71  is supported to be rotatable about rotation shaft  73  with respect to support member  53 . An upper portion of hook member  71  is provided with protruding portion  71   a  protruding from the front end portion to the rear end portion of plate  51  with a predetermined gap from the upper surface of plate  51 . In the present embodiment, protruding portion  71   a  protrudes to be substantially parallel to the upper surface of pedestal  50  at the rotation end of hook member  71 . Torsion spring  72  is attached to rotation shaft  73 . A first spring foot of torsion spring  72  is fixed to plate  51 , and a second spring foot is fixed to hook member  71 . Torsion spring  72  biases the distal end of protruding portion  71   a  in a direction (counterclockwise in  FIG. 9 ) closer to the upper surface of plate  51 . 
     As illustrated in  FIG. 10 , clamp mechanism  80  includes connection cylinder  81  provided at rear end side leg section  63  of nozzle container  60 , and receiving cylinder  88  provided at the rear end portion of corresponding pedestal  50 . As illustrated in  FIG. 11 , connection cylinder  81  includes housing  82 , shaft  83 , coil spring  84 , and ball  86 . 
     Housing  82  is a cylindrical member, and is fixed in a state of being inserted into fixing hole  63   a  that is formed to penetrate through rear end side leg section  63  of nozzle container  60  in the up-down direction. Multiple (for example, three) openings  82   o  are formed at equal intervals in a circumferential direction at a lower end portion of housing  82 . 
     Shaft  83  is an elongate member inserted into housing  82 , and is biased upward with respect to housing  82  by coil spring  84 . Operation section  83   s  pressed and operated by an operator is formed on an upper end portion of shaft  83 . Small-diameter section  83   a,  tapered section  83   c,  and large-diameter section  83   b  are formed in this order toward the lower end at a lower end portion of shaft  83 . C-ring  85  serving as a retaining ring is attached to large-diameter section  83   b.  Tapered section  83   c  is formed such that an outer diameter thereof gradually increases from small-diameter section  83   a  to large-diameter section  83   b.  Ball  86  is disposed in a space defined by a region where small-diameter section  83   a,  tapered section  83   c,  and large-diameter section  83   b  of shaft  83  are formed and opening  82   o  of corresponding housing  82 , and appears and disappears with respect to opening  82   o  due to the up-down motion of shaft  83 . That is, when ball  86  is located at small-diameter section  83   a  of shaft  83 , ball  86  is retracted into housing  82 ; when shaft  83  is moved up, ball  86  is gradually pushed outside in a radial direction by tapered section  83   c;  and when ball  86  reaches large-diameter section  83   b  of shaft  83 , a part thereof is brought into a state of protruding from opening  82   o.  Therefore, the operator can retract ball  86  into housing  82  by performing a pressing operation on operation section  83   s  to lower shaft  83 . The operator can cause a part of ball  86  to protrude outside from opening  82   o  of housing  82  by canceling the pressing operation on operation section  83   s  and raising shaft  83  with the biasing force of coil spring  84 . 
     Receiving cylinder  88  is a cylindrical member having an inner diameter slightly larger than an outer diameter at the lower end portion of housing  82  and having an outer diameter slightly smaller than an inner diameter of fixing hole  63   a.  Annular ridge  88   a  extending inside in the radial direction is formed on the inner peripheral surface of receiving cylinder  88 . 
     The operator inserts connection cylinder  81  into receiving cylinder  88  in a state in which ball  86  is retracted into housing  82  by pressing operation section  83   s,  and when connection cylinder  81  is inserted into receiving cylinder  88 , releases the pressing of operation section  83   s  such that ball  86  protrudes outside from opening  82   o  of housing  82 . Consequently, ball  86  is fitted into ridge  88   a  of receiving cylinder  88 , and thus connection cylinder  81  is coupled to receiving cylinder  88 . As clamp mechanism  80 , a ratchet type clamp mechanism may be employed in which connection cylinder  81  is automatically clamped by merely inserting connection cylinder  81  into receiving cylinder  88 , and the clamp is released by operating the operation section. 
     Here, in the present embodiment, a height of operation section  83   s  is configured to be the same as an upper end height of suction nozzle N accommodated in nozzle container  60 , as illustrated in  FIG. 6 . Nozzle container  60  is designed such that the upper end height of suction nozzle N accommodated in nozzle container  60  has a height not causing interference with suction nozzle N when head  33  is moved, and thus it is possible to also prevent nozzle container  60  from interfering with operation section  83   s.  A height of operation section  83   s  may be configured to be lower than the upper end height of suction nozzle N accommodated in nozzle container  60 . 
     Next, in nozzle replacement table unit  40  configured as described above, an operation of replacing nozzle container  60 , that is, an operation of detaching nozzle container  60  from pedestal  50  and an operation of attaching new nozzle container  60  to pedestal  50  will be described. The operation of replacing nozzle container  60  is mainly performed at the time of the setup change. 
     First, an operation when nozzle container  60  is attached to pedestal  50  will be described.  FIGS. 13 to 19  are explanatory diagrams illustrating a state in which nozzle container  60  is attached to pedestal  50 . The replacement suction nozzles are not illustrated in  FIGS. 13 to 19 . First, as illustrated in  FIG. 13  and  FIG. 14 , an operator tilts front end side leg section  62  of nozzle container  60  to be lower than rear end side leg section  63 , and thus front end side leg section  62  contacts the upper surface of pedestal  50 . Here, front end side leg section  62  is provided with inclined surface  623  inclined to be parallel to the upper surface of pedestal  50  in a state in which nozzle container  60  is inclined. Therefore, the operator can easily maintain the inclined state of nozzle container  60  by contacting inclined surface  623  of front end side leg section  62  with the upper surface of pedestal  50 . 
     Next, as illustrated in  FIG. 15 , the operator moves (slides) nozzle container  60  forward until front surface  622  of front end side leg section  62  abuts on stoppers  52   a  and  52   b  of pedestal  50  while maintaining the tilted state of nozzle container  60 . In this case, as illustrated in  FIG. 16 , guide pin  54   a  provided on the upper surface of pedestal  50  is fitted into guide groove  62   b  that extends in the longitudinal direction of nozzle container  60  with respect to front end side leg section  62  of nozzle container  60  and is open to expand at front surface  622 . Thus, front surface  622  of front end side leg section  62  of nozzle container  60  is made to abut on stoppers  52   a  and  52   b  of pedestal  50  without being positionally deviated in the lateral direction thereof. When front surface  622  of front end side leg section  62  is made to abut on stoppers  52   a  and  52   b,  hook member  71  disposed between stoppers  52   a  and  52   b  enters insertion groove  62   a  of front end side leg section  62 , and is caught by pole  64  provided in insertion groove  62   a.    
     As illustrated in  FIG. 17 , the operator performs a pressing operation on operation section  83   s  of clamp mechanism  80  while front end side leg section  62  of nozzle container  60  is abutting on the stoppers  52   a  and  52   b  of pedestal  50 , and lowers rear end side leg section  63  to level nozzle container  60 . In this case, as illustrated in  FIG. 18 , guide pin  54   b  formed on the upper surface of pedestal  50  is fitted into guide hole  63   b  formed in lower surface  631  of rear end side leg section  63  and nozzle container  60  is positioned with respect to pedestal  50 , and connection cylinder  81  of clamp mechanism  80  is also inserted into receiving cylinder  88  as illustrated in  FIG. 19 . The operator releases the finger from operation section  83   s  of clamp mechanism  80  to cancel the pressing operation. As a result, nozzle container  60  is coupled and fixed to pedestal  50 . Here, pole  64  is pressed by hook member  71  due to the biasing force of torsion spring  72 , and thus nozzle container  60  is brought into a state of being pressed against pedestal  50 . Consequently, it is possible to prevent nozzle container  60  from rattling with respect to pedestal  50 . 
     Next, an operation when nozzle container  60  is detached from pedestal  50  will be described. First, the operator presses shaft  83  of clamp mechanism  80  while holding nozzle container  60  with one hand to release clamping by clamp mechanism  80 . Next, the operator lifts rear end side leg section  63  of nozzle container  60  to pull connection cylinder  81  from receiving cylinder  88 . The operator pulls out nozzle container  60  to the closer side. 
     Here, the correspondence between the principal elements of the embodiment and the principal elements of the present disclosure described in Description of Embodiments will be described. That is, nozzle container  60  corresponds to a nozzle container, pedestal  50  corresponds to a pedestal, clamp mechanism  80  corresponds to a fixing mechanism, and operation section  83   s  corresponds to an operation section. Stoppers  52   a  and  52   b  correspond to abutted sections, connection cylinder  81  corresponds to a fitting portion, receiving cylinder  88  corresponds to a fitted section, and ball  86  and ridge  88   a  correspond to a lock section. Guide groove  62   b  corresponds to a guide groove, and guide pin  54   a  corresponds to a guide pin. Pole  64  corresponds to a pole, protruding portion  71   a  of hook member  71  corresponds to a hook section, and torsion spring  72  corresponds to a biasing member. Seating sensors  55   a  and  55   b  correspond to multiple sensing sensors, and protruding portion  65  corresponds to a sensed section. 
     The present disclosure is not limited to the above-described embodiment, and it is needless to say that the present disclosure can be implemented in various forms as long as they fall within the technical scope of the present disclosure. 
     For example, in the above embodiment, operation section  82   s  is configured as a push button operated through a pressing operation. However, the operation section may be configured as a lever operated through a swinging operation. Operation section  82   s  is provided on the upper surface of nozzle container  60 , but may be provided on the end surface or the side surface of nozzle container  60 . 
     In the above embodiment, pedestal  50  includes two seating sensors  55   a  and  55   b  on the upper surface, and nozzle container  60  includes protruding portion  65  serving as a sensed section that is sensed by one of seating sensors  55   a  and  55   b  when being seated on pedestal  50 . However, the pedestal may include three or more sensing sensors, and the nozzle container may include a sensed section that is sensed by any of the sensing sensors. Such a seating sensor or a sensed section may be omitted. 
     As described above, the nozzle replacement table unit of the present disclosure is a nozzle replacement table unit including a nozzle container configured to accommodate multiple replacement nozzles, a pedestal to which the nozzle container is detachably attached, a fixing mechanism configured to fix the nozzle container to the pedestal, and an operation section configured to release fixing by the fixing mechanism, in which the operation section is provided in the nozzle container. 
     In the nozzle replacement table unit according to the present disclosure, in a case where the nozzle container accommodating multiple replacement nozzles is detachably fixed to the pedestal by the fixing mechanism, the operation section for releasing the fixing by the fixing mechanism is provided in the nozzle container. According to this nozzle replacement table unit, since an operator can detach the nozzle container from the pedestal by operating the operation section with one hand to release the fixing by the fixing mechanism while grasping the nozzle container with the hand, the operability can be further improved. 
     In the nozzle replacement table unit according to the present disclosure, the operation section may be provided on an upper surface of the nozzle container. With this configuration, the operability can be further improved. In this case, the operation section may be configured such that an upper end height of the operation section is equal to or lower than an upper end height of the nozzle accommodated in the nozzle container. With this configuration, in a case where the nozzle replacement table unit is applied to a component mounter, the nozzle container is designed to have a height at which the head provided in the component mounter does not interfere with the upper end of the nozzle accommodated in the nozzle container when the head is moved, and thus it is possible to prevent interference with the operation section. 
     In the nozzle replacement table unit of the present disclosure, the pedestal may have an abutted section on which a first end portion of the nozzle container in a longitudinal direction abuts, the fixing mechanism may have a fitting section provided at a second end portion of the nozzle container in the longitudinal direction, a fitted section that is provided at a corresponding part of the pedestal and into which the fitting section is fitted, and a lock section configured to lock a state in which the fitting section is fitted into the fitted section, and the operation section may be a lock releasing operation section configured to release lock of the lock section. In this case, the nozzle container may be moved in the longitudinal direction in a state in which a lower surface of the second end portion is spaced apart from a seating surface of the pedestal and a lower surface of the first end portion is tilted to contact the seating surface of the pedestal, so that the first end portion abuts on the abutted section, and then the lower surface of the second end portion contacts the seating surface of the pedestal such that the nozzle container is fixed to the pedestal, a guide groove extending in the longitudinal direction of the nozzle container may be provided in the lower surface of the first end portion of the nozzle container, and the pedestal may have a guide pin fitted into the guide groove when the nozzle container is moved in the longitudinal direction such that the first end portion abuts on the abutted section in a state in which the lower surface of the first end portion contacts the seating surface. With this configuration, it is possible to prevent the nozzle container from being positionally deviated when the nozzle container is attached to the pedestal. 
     In the nozzle replacement table unit of the present disclosure, a pole section orthogonal to the longitudinal direction of the nozzle container and extending in a lateral direction may be provided at the first end portion of the nozzle container, and the pedestal may have a hook section fitted into the pole section, and a biasing member configured to bias the hook section in a direction in which the pole section is pressed against a seating surface of the pedestal. With this configuration, since the nozzle container can be pressed against the pedestal by the hook section, it is possible to prevent the nozzle container from rattling with respect to the pedestal when the nozzle container is attached to the pedestal. 
     In the nozzle replacement table unit according to the present disclosure, the operation section may be configured by a push button. With this configuration, since the nozzle container can be held by one hand and the operation section can be pressed and operated by a finger (for example, a thumb) of the hand, the operability can be further improved. 
     In the nozzle replacement table unit according to the present disclosure, the pedestal may have multiple sensing sensors each configured to sense seating of the nozzle container, and the nozzle container may have a sensed section that is sensed by any sensing sensor among the multiple sensing sensors. With this configuration, multiple different types of nozzle containers can be identified by merely providing sensed sections on the nozzle containers, and thus a nozzle can be replaced more appropriately. 
     INDUSTRIAL APPLICABILITY 
     The present disclosure can be applied to a manufacturing industry for a nozzle replacement table unit, a component mounting system, or the like. 
     REFERENCE SIGNS LIST 
       10  Component mounting system,  11  Management device,  12  Printing machine,  13  printing inspection machine,  15  Base,  20  Component mounter,  21  Casing,  210  Opening,  31  Feeder,  32  Board conveyance device,  33  Head,  34  Head moving device,  35  Part camera,  36  Mark camera,  40  Nozzle replacement table unit,  50  Pedestal,  51  Plate,  52   a,    52   b  Stopper,  53  Support member,  54   a,    54   b  Guide pin,  55   a,    55   b  Seating sensor,  60  Nozzle container,  61  Main body,  62  Front end side leg section,  62   a  Insertion groove,  62   b  Guide groove,  621  Lower surface,  622  Front surface,  623  Inclined surface,  63  Rear end side leg section,  631  Lower surface,  63   a  Fixing hole,  63   b  Guide hole,  64  Pole,  65  protruding portion,  70  Hook mechanism,  71  Hook member,  71   a  Protruding portion,  72  Torsion spring,  73  Rotation shaft,  80  Clamp mechanism,  81  Connection cylinder,  82  Housing,  82   o  Opening,  83  Shaft,  83   s  Operation section,  83   a  Small-diameter section,  83   b  Large-diameter section,  83   c  Tapered section,  84  Coil spring,  85  C ring,  86  Ball,  88  Receiving cylinder,  88   a  Ridge, N Replacement suction nozzle