Abstract:
A detachable punch mold includes a mold base, a clamp member, a punch, and a fastening member for securing the clamp member and the punch to the mold base. The clamp member defines a slot therein. The punch is partially engaged in the slot of the clamp member and partially protruding out from the clamp member. Both of the clamp member and the punch are detachably attached to the mold base.

Description:
BACKGROUND 
       [0001]    1. Technical Field 
         [0002]    The present disclosure relates to a detachable punch mold. 
         [0003]    2. Description of Related Art 
         [0004]    Referring to  FIG. 4 , a typical punch mold includes a cylindrical main body and a punch integrally protruding from a top portion of the cylindrical main body. The punch is used to cut holes or indentations on the sheet of metal. The punch is prone to wear and tear. However, the conventional punch mold is integrally formed and not detachable. If the punch experiences wear and tear, the whole punch mold has to be discarded. This is wasteful; and furthermore, the typical punch integrally formed mold is not easily fabricated. 
         [0005]    What is needed, therefore, is a detachable punch mold that overcomes the above-described shortcomings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]      FIG. 1  is an exploded view of an embodiment of a detachable punch mold according to the present disclosure. 
           [0007]      FIG. 2  is similar to  FIG. 1 , but viewed from another aspect. 
           [0008]      FIG. 3  is an assembled view of  FIG. 1 . 
           [0009]      FIG. 4  illustrates a punch mold according to the prior art. 
       
    
    
     DETAILED DESCRIPTION 
       [0010]    The disclosure is illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean at least one. 
         [0011]    Referring to  FIGS. 1 and 2 , an embodiment of a detachable punch mold includes a mold base  10 , a clamp member  20 , a punch  30 , and a pair of fastening members  40 . The mold base  10 , the clamp member  20  and the punch  30  are detachable parts of the punch mold. A flange of the punch  30  can be used to cut a sheet of metal. 
         [0012]    The mold base  10  has a handle portion  12  with a spiral groove. A dowel pin  14  protrudes from an exterior surface of the mold base  10  above the handle portion  12 . The dowel pin  14  is configured to facilitate installing the punch mold to a punch press machine (not shown). A pair of guiding holes  161  and a pair of screw holes  163  are defined in a top portion of the mold base  10 . 
         [0013]    The clamp member  20  is cylinder-shaped. A diameter of the cylindrical clamp member  20  is substantially equal to that of the mold base  10 , and a height of the clamp member  20  is shorter than that of the mold base  10 . A holding slot  22  is defined through the clamp member  20  for receiving the punch  30 . The holding slot  22  includes a wide entrance portion at a bottom of the clamp member  20  and a narrow restricting portion above the entrance portion. A resisting surface  221  is formed between the wide entrance portion and the narrow restricting portion in the holding slot  22 . A pair of guiding posts  24  protrudes from a bottom of the clamp member  20  corresponding to the guiding holes  161  of the mold base  10 . A pair of through holes  26  is defined in the clamp member  20  corresponding to the fastening members  40 . A height of each of the fastening members  40  is greater than that of the clamp member  20 . 
         [0014]    The punch  30  includes a rectangular or other shaped main body  32  and a pair of securing protrusions  34  protruding from two sides of a lower portion of the main body  32 . Base surfaces of the securing protrusions  34  and the main body  32  lie on a same plane. The main body  32  of the punch  30  is receivable in the narrow restricting portion of the holding slot  22  of the clamp member  20 . The securing protrusions  34  are engageable in the wide entrance portion of the holding slot  22  of the clamp member  20 . 
         [0015]    Referring to  FIG. 3 , in assembly, the punch  30  extends through the holding slot  22  from the lower entrance portion of the holding slot  22 . The main body  32  of the punch  30  is engaged in the narrow restricting portion of the holding slot  22 . The securing protrusions  34  are engaged in the entrance portion of the holding slot  22  and resisted by the resisting surface  221  in the holding slot  22 . Thereby the punch  30  is prevented from being pulled out of the clamp member  20 . The guiding posts  24  are inserted in the guiding holes  161  of the mold base  10 , and the through holes  26  of the clamp member  20  are aligned with the screw holes  163  of the mold base  10 . The fastening members  40  extend through the through holes  26  of the clamp member  20  and then securely engaged with the screw holes  163  of the mold base  10 , thus securing the punch  30  and the clamp member  20  to the mold base  10 . 
         [0016]    If the punch  30  of the punch mold becomes abraded, the fastening members  40  are taken off, and the clamp member  20  and the punch  30  are detached from the punch mold. It is easy to install and replace a new punch. 
         [0017]    In the embodiment, the appearance and function of the punch mold of the present disclosure is unchanged relative to the conventional punch mold. Furthermore, the punch mold of the present disclosure is made of detachable parts. Each of the parts can be easily formed, and each of the parts can be used in other molds. The punch mold can be widely used in currently used equipment and provide cost-savings. 
         [0018]    While the present disclosure has been illustrated by the description of preferred embodiments thereof, and while the preferred embodiments have been described in considerable detail, it is not intended to restrict or in any way limit the scope of the appended claims to such details. Additional advantages and modifications within the spirit and scope of the present disclosure will readily appear to those skilled in the art. Therefore, the present disclosure is not limited to the specific details and illustrative examples shown and described.