Patent Publication Number: US-8973477-B2

Title: Paper cutting machine

Description:
FIELD OF THE INVENTION 
     The present invention relates to a paper cutting machine which changes using types and replaces different types of cutting members so as to cut corners or sides of papers and to cut holes on the papers. 
     BACKGROUND OF THE INVENTION 
     A conventional paper cutting machine is used to cut corners of papers without cutting sides of the papers. In addition, the conventional paper cutting machine has a fixed cutter without replacing different types of cutters. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to provide a paper cutting machine which changes using types and replaces different types cutting members so as to cut corners or sides of papers and to cut holes on the papers 
     To obtain the above objectives, a paper cutting machine provided by the present invention contains: a base, a holder, a connecting member, a driving member, a cutting member, and a protective cover. 
     The base includes four first holes defined thereon so as to insert two stopping pieces by ways of four pegs of the two stopping pieces, a second hole formed thereon so as to receive a deck, a third hole arranged behind the second hole, a first slot defined below the third hole so as to receive a chip collecting box, and a second slot formed on a bottom end of a front side of the base so as to receive a case. 
     The holder is disposed above the second orifice of the base and includes two first orifices formed on two upper ends of two sides thereof so as to insert a first bolt, two second orifices defined on two middle sections of the two sides thereof so as to fix a second bolt, and a covering seat locked on a front side of the holder so as to define a groove between the covering seat and the holder. 
     The connecting member connects with the first bolt of the holder and includes a press bar mounted on two lower ends of two sides thereof, a reinforcement bar fixed above the press bar, and a handle secured on two upper ends of the two sides thereof. 
     The driving member is disposed in the groove of the holder and includes a first aperture formed thereon so as to insert the press bar, a seat coupled with a lower end thereof, a recess defined in the seat, and a second aperture arranged at a central position of a front end of the seat so as to fix a positioning rod. 
     The cutting member includes an inserting piece, a cutout defined on the inserting piece such that the cutting member is placed into the recess of the seat and is fixed by screwing the positioning rod into the cutout. 
     The first bolt has two torsion springs mounted thereon, and one end of each torsion spring abuts against the press bar, another end of the each torsion spring is biased against the second bolt. 
     The protective cover is covered on the holder. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the assembly of a paper cutting machine according to a first embodiment of the present invention. 
         FIG. 2  is a perspective view showing the exploded components of the paper cutting machine according to the first embodiment of the present invention. 
         FIG. 3  is a cross sectional view showing the assembly of the paper cutting machine according to the first embodiment of the present invention. 
         FIG. 4  is a cross sectional view showing the operation of the paper cutting machine according to the first embodiment of the present invention 
         FIG. 5  is a perspective view showing the assembly of a paper cutting machine according to a second embodiment of the present invention. 
         FIG. 6  is a perspective view showing the assembly of two holing plates of the paper cutting machine according to the second embodiment of the present invention. 
         FIG. 7  is a plan view showing the operation of the paper cutting machine according to the second embodiment of the present invention. 
         FIG. 8  is another plan view showing the operation of the paper cutting machine according to the second embodiment of the present invention. 
         FIG. 9  is also another plan view showing the operation of the paper cutting machine according to the second embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to  FIGS. 1-3 , a paper cutting machine  10  according to a first embodiment of the present invention comprises a base  20 , a holder  30 , a connecting member  40 , a driving member  50 , a cutting member  60 , and a protective cover  70 . 
     The base  20  includes four first holes  21  defined thereon so as to insert two stopping pieces  26  by ways of four pegs  261  of the two stopping pieces  26 , a second hole  22  formed thereon so as to receive a deck  27 , a third hole  23  arranged behind the second hole  22 , a first slot  24  defined below the third hole  23  so as to receive a chip collecting box  241 , and a second slot  25  formed on a bottom end of a front side of the base  20  so as to receive a case  251 . 
     The holder  30  is disposed above the second orifice  23  of the base  20  and includes two first orifices  31  formed on two upper ends of two sides thereof so as to insert a first bolt  33 , two second orifices  32  defined on two middle sections of the two sides thereof so as to fix a second bolt  34 , and a covering seat  35  locked on a front side of the holder  30  so as to define a groove  36  between the covering seat  35  and the holder  30 . 
     The connecting member  40  connects with the first bolt  33  of the holder  30  and includes a press bar  41  mounted on two lower ends of two sides thereof, a reinforcement bar  42  fixed above the press bar  41 , and a handle  43  secured on two upper ends of the two sides thereof. 
     The driving member  50  is disposed in the groove  36  of the holder  30  and includes a first aperture  51  formed thereon so as to insert the press bar  41 , a seat  52  coupled with a lower end thereof, a recess  53  defined in the seat  52 , and a second aperture  54  arranged at a central position of a front end of the seat  52  so as to fix a positioning rod  55 . 
     The cutting member  60  includes an inserting piece  61  and a cutout  62  defined on the inserting piece  62  such that the cutting member  60  is placed into the recess  53  of the seat  52  and is fixed by screwing the positioning rod  55  into the cutout  62 . In addition, the first bolt  33  has two torsion springs  331  mounted thereon, and one end of each torsion spring  331  abuts against the press bar  41 , another end of the each torsion spring  331  is biased against the second bolt  34 . 
     The protective cover  70  is covered on the holder  30 . 
     Referring further to  FIGS. 3 and 4 , in operation, the handle  43  is pressed downwardly, the press bar  41  is driven by the handle  43  to move to press the driving member  50  downwardly, such that the cutting member  60  is pressed by the driving member  50  so as to cut papers (not shown) on the deck  27 . Thereafter, the two torsion springs  331  push the press bar  41  upwardly so that the connecting member  40  moves back to an original position, and cut chips of the papers fall into the chip collecting box  241  via the third hole  23 . Furthermore, the case  251  is used to place different types of cutting members  60 . Also, the cutting member  60  is removed quickly by unscrewing the positioning rod  55  from the cutout  62  so as to replace another cutting member easily. 
     As shown in  FIGS. 5 and 6 , the two stopping pieces  26  are replaced by two holding plates  80  according to a second embodiment of the present invention, wherein each holding plate  80  includes two pegs  84  extending outwardly from a bottom end thereof so as to connect with two of the four first holes  21 , a screw bolt  85  for screwing the each holding plate  80  with a respective one of two openings  28  of the base  20 , an elongated panel  81  formed on a rear end of the each holding plate  80 , an elongated trench  82  defined in the elongated panel  81  of the each holding plate  80  so as to insert a connector  93  or a limiting member  90 , and a notch  83  arranged on a front end of the elongated panel  81 . 
     As illustrated in  FIGS. 6-9 , the connector  93  has an insertion  94  inserted into the elongated trench  82  and a rib  95  formed on a front end thereof. The limiting member  90  is placed on the elongated panel  81  and is locked with a nut  92  in the elongated trench  82  by ways of a locking element  91 , and the limiting member  90  includes two stoppers  901  extending outwardly from two sides thereof and a shoulder  902  defined on one of the two stoppers  901 , such that the limiting member  90  is fixed on the elongated panel  81 . 
     Thereby, when the two holding plates  80  are fixed on the base  20 , the paper cutting machine  10  is applied to cut corners of parallel papers (not shown), and when the rib  95  of the connector  93  is placed on the front end of the elongated panel  81 , another of the two holding plates  80  is served to fix the one of the two stoppers  901  which has the shoulder  902  on the front end of the elongated panel  81 . On the contrary, when the rib  95  of the connector  93  is placed on a rear end of the elongated panel  81 , the another holding plate  80  is applied to fix another stopper  901  which does not have the shoulder  902  on the front end of the elongated panel  81  so that the papers are located at the same horizontal position, thus adjusting a cutting position and a cutting distance of the papers. Preferably, a size marker is provided in the notch  83  of the each holding plate  80  and moves relative to the locking element  91 , thus cutting the papers precisely. 
     While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.