Multipurpose blind cutting machine

Abstract

A multipurpose blind cutting machine is constructed to include a machine base, a first cutter unit and a second cutter unit mounted on the machine base and stacked with each other. The first cutter unit has a circular cutting blade and a cutter drive adapted to rotate the blade and to move the blade in a direction substantially perpendicular to the feeding direction of a blank blind to be cut. The second cutter unit has a locating molds having a plurality of positioning through holes for the positioning of parts of the blank blind to be cut, a cutting-off tool, and a cutter drive adapted to move the cutting-off tool in a direction substantially perpendicular to the feeding direction of the blank blind. A control unit is adapted to selectively control the operation of the first cutter unit and the second cutter unit.

What is claimed is:  
     
         1 . A multipurpose blind cutting machine adapted to cut blank blinds, comprising: 
 a machine base;    a first cutter unit installed in said machine base, said first cutter unit having a circular cutting blade arranged in a direction that a center axis of said circular cutting blade extends in parallel to a feeding direction of the blank blind to be cut, and a cutter drive adapted to rotate said circular cutting blade and to move said circular cutting blade in a direction substantially perpendicular to the feeding direction of the blank blind to be cut;    a second cutter unit installed in said machine base and arranged with said first cutter unit in a stack, said second cutter unit having a locating mold having a plurality of positioning through holes for the positioning of parts of the blank blind to be cut, a cutting-off tool, and a cutter drive adapted to move said cutting-off tool in a direction substantially perpendicular to the feeding direction of the blank blind to be cut; and    a control unit installed in said machine base and electrically connected to said first cutter unit and said second cutter unit and adapted to selectively control the operation of said first cutter unit and said second cutter unit.    
     
     
         2 . The multipurpose blind cutting machine as claimed in  claim 1 , wherein said first cutter unit is mounted on a top side of said machine base, and said second cutter unit is stacked on a top side of said first cutter unit.  
     
     
         3 . The multipurpose blind cutting machine as claimed in  claim 1 , wherein second cutter unit is mounted on a top side of said machine base, and said first cutter unit is stacked on a top side of said second cutter unit.  
     
     
         4 . The multipurpose blind cutting machine as claimed in  claim 1 , further comprising a waste material separator adapted to separate waste materials cut from the blank blind by said first cutter unit and said second cutter unit from the cutting paths of said circular cutting blade and said cutting-off tool.  
     
     
         5 . The multipurpose blind cutting machine as claimed in  claim 4 , wherein said waste material separator is shaped like a hopper having a relatively greater open top side and a relatively smaller open bottom side and adapted to guide waste materials from the blank blind cut by one of said first and second cutter units away from the cutting path of the other of said first and second cutter units, said waste material separator having a first sidewall corresponding to said circular cutting blade and said cutting-off tool and a second sidewall opposite to said first sidewall, said first sidewall having an upper part sloping downwardly inwards in direction obliquely toward said second sidewall and a lower part extending vertically downwards.  
     
     
         6 . The multipurpose blind cutting machine as claimed in  claim 1 , wherein the blank blind feeding directions of said first cutter unit and said second cutter unit extend in same direction and arranged in parallel.  
     
     
         7 . The multipurpose blind cutting machine as claimed in  claim 1  further comprising a material basket disposed below said first cutter unit and said second cutter unit and adapted to collect waste materials cut from the blank blind by said first cutter unit and said second cutter unit.  
     
     
         8 . The multipurpose blind cutting machine as claimed in  claim 1 , wherein said machine base comprises a four-leg worktable for positioning on the floor and a material basket mounted in said four-leg worktable for collecting waste materials, said four sides worktable being peripherally blocked with peripheral walls and defining a rectangular open space having top and bottom sides opened, said four-leg worktable having two shielding boards bilaterally suspended near the bottom open side thereof, two guide rails respectively provided at bottom sides of said shielding boards, said material basket being a rectangular top-open container having two hooked top flanges respectively hooked on said guide rails for enabling said material basket to be moved horizontally in and out of said worktable along said guide rails.  
     
     
         9 . The multipurpose blind cutting machine as claimed in  claim 1 , wherein said machine base has a dust hole for holding a dust collector adapted to collect dust and waste material chips produced from a blind cutting operation of the multipurpose blind cutting machine.  
     
     
         10 . The multipurpose blind cutting machine as claimed in  claim 1 , wherein said machine base has a worktable having an open top; said first cutter unit further comprises a housing adapted to accommodate the circular cutting blade and cutter drive of said first cutter unit, the housing of said first cutter unit having an open top side, an open bottom side fixedly fastened to the periphery of the open top of said worktable, an insertion hole in a side thereof for the insertion of the blank blind into said first cutter unit for cutting, an access door hinged to another side thereof and turnable between a close position and an open position, said second cutter unit further comprises a housing adapted to accommodate the cutting-off tool, the locating mold and the cutter drive of said second cutter unit, the housing of said second cutter unit having an open top side, an open bottom side fixedly fastened to the periphery of the open top side of the housing of said first cutter unit, an insertion hole in a side thereof for the insertion of the blank blind to be cut, and an access door hinged to another side thereof and turnable between a close position and an open position.  
     
     
         11 . The multipurpose blind cutting machine as claimed in  claim 10 , wherein said first cutter unit further comprises a micro switch adapted to turn on/off the cutter drive of said first cutter unit subject to the closing/opening status of the access door said first cutter unit, said second cutter unit further comprises a micro switch adapted to turn on/off the cutter drive of said second cutter unit subject to the closing/opening status of the access door of said second cutter unit.