Abstract:
A box nailing machine is disclosed. In the box nailing machine, A seat has an inner space. A base is installed below the seat. A nail stopper is installed above the base in the inner space of the seat and being confined by the inner space to move up and down. A nail receiving space is positioned between the nail stopper and the base in the seat; and an adjustable stud is passed through the seat and nail stopper. Thereby as the adjustable stud is rotated, the nail stopper is driven to be moved up and down for changing a volume of the nail receiving space.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a box nailing machine, and especially to a box nailing machine with an adjustable nail stopper for receiving nails of different thickness. 
     BACKGROUND OF THE INVENTION 
     Referring to FIG. 7, a prior nail is illustrated. In that, the stop plate  91 , guide plate  93  and nail recess  92  are fixed together. The depth of the moving groove  94  is also fixed. Therefore, the box nailing machine only jets nails of fixing thickness. If nails of different thickness are to be used, the whole nail cartridge  9  must be updated, however, this is time and labor-consumed. Therefore, it is necessary to have a novel box nailing machine which may jet nails of different thickness without needing to update nail cartridge. 
     SUMMARY OF THE INVENTION 
     A box nailing machine is disclosed. In the box nailing machine, A seat has an inner space. A base is installed below the seat. A nail stopper is installed above the base in the inner space of the seat and being confined by the inner space to move up and down. A nail receiving space is positioned between the nail stopper and the base in the seat; and an adjustable stud is passed through the seat and nail stopper. Thereby as the adjustable stud is rotated, the nail stopper is driven to be moved up and down for changing a volume of the nail receiving space. 
     The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the present invention. 
     FIG. 2 is an exploded perspective view of the present invention. 
     FIG. 3 is a cross sectional view of FIG.  1 . 
     FIG. 4 is a cross sectional view of the second embodiment in the present invention. 
     FIG. 5 is an exploded perspective view of the third embodiment in the present invention. 
     FIG. 6 is a cross sectional view of the third embodiment in the present invention. 
     FIG. 7 is an exploded perspective view of the prior box nailing machine. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to FIGS. 1 to  6 , the box nailing machine of the present invention is illustrated. As shown in the FIGS. 1 to  3 , the box nailing machine  1  of the present invention comprises a seat  11  having an inner space  15  and a base  12  installed below the seat  11 . The inner space  15  of the seat  11  has a nail stopper  13  which is position-adjustable. This nail stopper  13  is confined by the inner space  15  so as just to move upwards or downwards. A nail receiving space  16  is formed between the nail stopper  13  and the base  12 . Further, an adjustable stud  18  passing through the seat  11  and the nail stopper  13  are formed therebetween. Besides, the box nailing machine of the present invention provides a nail beating piece  14  for pushing the nail to be jetted out. Referring to FIGS. 1 to  3 , since the “M” shape cross section of the nail stopper  13 , two recesses  131 ,  131 ′ are generated, while the nail beating piece  14  has two protrusions  141 ,  141 ′ so that they may move in the two recesses  131 ,  131 ′ forwards and backwards to beat the nail. As known by those skilled in the art, the nail stopper  13  and nail beating piece  14  are not confined to the configurations illustrated in the figures, any device which may cause the nail beating piece  14  to move in the nail stopper  13  linearly serves this purpose. The top of the seat  11  and top of the nail stopper  13  have a T shape groove  17  and a screw hole  132 , respectively. The T shape groove  17  and screw hole  132  are communicated for installing the adjustable stud  18 . The T shape groove  17  includes at least an upper portion and a lower portion. The diameter of the upper portion is larger than the lower portion so that a platform surface  172  is formed at the boundary of the upper portion and the lower portion. The periphery of the upper portion has an inner concave groove for installing a C ring  19 . A depth of the concave groove is larger than the thickness of the C ring  19  so that the one part of the C ring  19  protrudes from the peripheral wall of the T shape groove  17  so as to stop the adjustable stud  18  in the T shape groove  17 . The lower portion is a though hole  171 . 
     The upper wall of the inner space  15  of the seat  11  has an upper surface installed with a soft rubber  20 . The soft rubber  20  is concentric with the though hole  171  and is positioned at the periphery of the though hole  171 . The inner diameter of the soft rubber  20  is smaller than the adjustable stud  18  and is elastic, thereby preventing the looseness of the stud  18  passing therethrough. When the adjustable stud  18  is inserted into the T shape groove  17 , the thread  182  of the adjustable stud  18  passes through the though hole  171  and the soft rubber  20  to screw into the screw hole  132  on the nail stopper  13 . Since the upper side of the adjustable stud  18  is stopped by the C ring  19 , it only rotates instead of rising upwards. Therefore, when the adjustable stud  18  is rotated, the nail stopper  13  will move upwards or downwards along the rotating direction of the adjustable stud  18 . When the adjustable stud  18  causes the nail stopper  13  to move upwards, the depth of the nail receiving space  16  of the seat  11  will increase, thereby receiving thicker nails. When the adjustable stud  18  is rotated so that the nail stopper  13  moves downwards, the depth of the nail receiving space  16  will increase so as to receive smaller nails. Therefore, as it is desired to use nails of different thickness, it is only necessary to rotate the adjustable stud  18 . 
     Of course, many examples are suitable in the present invention, which is only slightly modified. Referring to FIG. 4, the second embodiment of the box nailing machine according to the present invention is illustrated. The top of the seat  31  of this box nailing machine  3  is installed with a screw hole  311  for screwing a stud  38 . The top of the nail stopper  33  is installed with a retaining piece  331 . The retaining piece  331  clamps a stopper  381  riveted to the stopper  381  in front of the stud  38 . Thereby, when the stud  38  is rotated, the nail stopper  33  also moves upwards and downwards so that the size of the nail receiving space  16  below the nail stopper  33  will change so as to present the function of the first embodiment. 
     Further, a third embodiment of the present invention is provided. With reference to FIGS. 5 and 6, the box nailing machine includes a hollow seat  51  and an upper plate  52  covering the seat  51 , the stopper plate  55  is installed in the seat  51 . A nail stopper  53  is positioned below the stopper plate  55  and is confined by the stopper plate  55  so as not to move up and down. A nail receiving space  56  is formed below the nail stopper  53 . A stud  58  passes through the upper plate  52  and the stopper plate  55 . Furthermore, the box nailing machine  5  of the present invention provides a nail beating piece  54  for pushing the nail to be jetted out. As shown in the figure, since the front and rear sides of the nail stopper have protrusions concave inwards, while the front and rear sides of the nail stopper  52  have groove  531  concave inwards so that the protrusions  551  is conformed to the groove  531  of the nail stopper  53 . Moreover, the interior of the nail stopper  53  has a tilt groove  532  tilt from the front side to the backside. The groove  532  is suitable for T shape or U shape nails and serves to prevent the nail from buckling into the groove. The nail beating piece  54  has a tilt protrusion parallel to the tilt groove  532  so that the nail beating piece  54  may move in the groove  532 . Since the protrusion  541  of the nail beating piece  54  is tilt toward the groove of the nail stopper  53 , when the nail beating piece  54  moves forwards, the nail stopper  53  will move rightwards and leftwards. 
     The upper plate  52  and stopper plate  55  have T shape groove and screw hole, respectively and have soft rubber concentric with the screw hole for installing the stud  58 . The installing way is identical to the first embodiment. When the stud  58  rotates, the stopper plate  55  will move up and down along the rotation of the stud  58 . As a result, the nail stopper  53  will move up and down so as to change the depth of the nail receiving space  56 . Consequently, nails of different thickness can be used. 
     The present invention are thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.