Patent Publication Number: US-2013240089-A1

Title: Stamping die with connecting member

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to stamping dies, and particularly to a stamping die with a connecting assembly. 
     2. Description of Related Art 
     An ejecting device pushes a floating plate, which loads products, out from a stamping die, so as to take the next product. A connecting assembly is located between the ejecting device and the floating plate and movably mounts the ejecting device and the floating plate to a bracket. However, a complex mounting structure is required for the connecting assembly, which may cause an inconvenient mounting for the ejecting device and the floating plate. 
     Therefore, there is room for improvement in the art. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Many aspects of the embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views. 
         FIG. 1  is an exploded, isometric view of an embodiment of a stamping die. 
         FIG. 2  is an exploded, isometric view of a connecting member of the stamping die of  FIG. 1 . 
         FIG. 3  is an isometric view of partially assembled stamping die of  FIG. 1 . 
         FIG. 4  is an enlarged view of a circled portion IV of  FIG. 3 . 
         FIG. 5  is an assembled view of the stamping die of  FIG. 1 . 
         FIG. 6  is a cross-sectional view of the stamping die of  FIG. 5  taken along a line VI-VI. 
         FIG. 7  is an enlarged view of a circled portion VII of  FIG. 6 . 
         FIG. 8  is similar to  FIG. 6 , but shows the stamping die of  FIG. 6  in a different state. 
     
    
    
     DETAILED DESCRIPTION 
     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.” 
       FIG. 1  shows a stamping die in accordance with an embodiment. The stamping die comprises a punching assembly  10 , a connecting assembly  20 , and a bracket  30 . 
       FIG. 5  and  FIG. 6  show the punching assembly  10  comprising an upper die holder  11 , a top board  12 , and a punch head  13 . 
     The upper die holder  11  is connected to a punch (not shown) and moved up and down. The top board  12  is secured to the upper die holder  11  and adapted for supporting the punch head  13 . The punch head  13  is secured to the top board  12  and located between the upper die holder  11  and the punch head  13 . The punch head  13  is used for punching a flitch. Two sliding posts  15  are secured to the upper die holder  11  and are located on opposite sides of the top board  12  and the punch head  13 . 
       FIG. 2  shows that the connecting assembly  20  comprises a supporting plate  21 , a connecting member  22 , a limiting member  23 , a mounting member  25 , and a floating plate  26 . The connecting member  22  connects the supporting plate  21  to the floating plate  26 . A first end of the connecting member  22  defines a threaded hole  221  and a cutout (not labeled) so as to form a blocking plane  223  and a limiting plane  225 . In one embodiment, the blocking plane  223  is substantially perpendicular to the limiting plane  225 . The limiting member  23  comprises a limiting portion  231  and a mounting portion  232  connected to the limiting portion  231 . In one embodiment, a cross-section of the limiting member  23  is circular. A diameter of the limiting portion  231  is greater than a diameter of the mounting portion  232 . The mounting portion  232  defines a plurality of outer threads. The mounting member  25  defines a plurality of outer threads. In one embodiment, each of the limiting member  23  and the mounting member  25  is a screw. The floating plate  26  defines a through hole  261  with inner threads. A size of the through hole  261  is equal to a size of the threaded hole  221 . The mounting member  25  can be locked into the threaded hole  221 . 
     The bracket  30  comprises a base  31 , two supporting blocks  32 , an operating plate  33 , and an installation plate  35 . The two supporting blocks  32  are perpendicularly secured to the base  31 . The operating plate  33  is secured to the two supporting blocks  32 . The installation plate  35  is secured to the operating plate  33 . Two rams  331  are secured to the operating plate  33 , and the installation plate  35  is located between the two rams  331 . The installation plate  35  defines an installation hole  351  and a mounting hole  353 . The installation hole  351  extends out of the operating plate  33  and receives the connecting member  22 . The mounting hole  353  extends to the operating plate  33  and secures the limiting member  23 . The installation hole  351  is adjacent to the mounting hole  353 . Apart of the installation hole  351  communicates with a part of the mounting hole  353 . 
       FIG. 6  shows that the stamping die further comprises two resilient members  60 . The two resilient members  60  can be mounted in the bracket  30 . In one embodiment, each of the two resilient members  60  is a spring. 
       FIGS. 3-8  show that, in assembly, the supporting plate  21  is positioned between the two supporting blocks  32 . The two resilient members  60  are secured between the supporting plate  21  and the base  31 . The first end of the connecting member  22  is received in the installation hole  351 . A second end of the connecting member  22  abuts the supporting plate  21  through the installation hole  351 . The limiting member  23  is locked in the mounting hole  353 . A part of the limiting portion  231  is received in the cutout, and an outer surface of the limiting portion  231  abuts the blocking plane  223 . The limiting plane  225  is located under the limiting portion  231 . The floating plate  26  is located on the installation plate  35 . The mounting member  25  is locked in the threaded hole  221  and the through hole  261 . When the mounting member  25  is inserted into the threaded hole  221 , the limiting portion  231  prevents the connecting member  22  from being rotated by the mounting member  25 . Thus, the mounting member  25  connects the floating plate  26  to the supporting plate  21 . The floating plate  26 , the connecting member  22 , and the supporting plate  21  are slidable together relative to the bracket  30 . The punching assembly  10  is positioned above the floating plate  26 , and the two sliding posts  15  are aligned with the two rams  331 . The upper die holder  11  is secured to the punch. In this position, each of the two resilient members  60  is minimally compressed. 
     In use, the flitch is placed on the floating plate  26 . The punching assembly  10  is moved towards the floating plate  26  by the punch. When the punch head  13  abuts the flitch, the punching assembly  10  moves the floating plate  26 , the connecting member  22 , and the supporting plate  21  towards the two resilient members  60 , until the floating plate  26  presses on the installation plate  35 . In this position, each of the two resilient members  60  undergoes maximum compression. The punching assembly  10  is moved away from the floating plate  26 . The two resilient members  60  rebound to move the floating plate  26 , the connecting member  22 , and the supporting plate  21  away from the two resilient members  60 , until the supporting plate  21  abuts the operating plate  33 . In this position, the limiting plane  225  abuts the limiting portion  231  and prevents the connecting member  22  from disengaging from the installation hole  351  due to inertia. After the punching assembly  10  is disengaged from the two rams  331 , the flitch can be removed from the floating plate  26 . The stamping die returns to an initial state. 
     It is to be understood, however, that even though numerous characteristics and advantages have been set forth in the foregoing description of embodiments, together with details of the structures and functions of the embodiments, the disclosure is illustrative only and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.