Cutting tool

Abstract

A cutting tool includes a pipe, a pressing foot assembly, a spring, and a blade assembly. The pressing foot assembly is slidably sheathed on an end of the pipe. The spring is sheathed on the pipe. An end of the spring abuts against the pipe, and the other end of the spring abuts against the pressing foot assembly. The blade assembly passes through the pipe and the pressing foot assembly in a slidable manner. When the cutting tool moves along a first direction, the pressing foot assembly keeps pressing against an object in a second direction substantially perpendicular to the first direction, such that the blade assembly protrudes from the pressing foot assembly and cuts the object along the first direction.

What is claimed is: 
     
       1. A cutting tool comprising:
 a pipe whereon a sliding slot is formed; 
 a pressing foot assembly slidably sheathed on an end of the pipe in a slidable manner, an opening formed on an end of the pressing foot assembly away from the pipe, the pressing foot assembly comprising an adapter ring, a pressing foot and a sliding block, the pressing foot being detachably combined with the adapter ring, the adapter ring being slidably connected to the pipe by the sliding block and the sliding slot, the opening being formed on the pressing foot, the sliding block being disposed on the adapter ring and located at a location corresponding to the sliding slot, the sliding block cooperating with the sliding slot to guide the pressing foot assembly to slide relative to the pipe along a second direction; 
 a spring sheathed on the pipe, an end of the spring abutting against the pipe, and the other end of the spring abutting against the adapter ring of the pressing foot assembly; and 
 a blade assembly passing through disposed on the pipe and for selectively being received in or protruding from the pressing foot assemblyin a slidable manner, the blade assembly comprising:
 an adjusting rod passing through the pipe; 
 a blade holder, an end of the blade holder combined with an end of the adjusting rod; and 
 a blade fixed on the other end of the blade holder. 
 
 
     
     
       2. The cutting tool of  claim 1 , wherein the pressing foot assembly further comprises a first magnetic member and a second magnetic member, the pressing foot comprises a combining end and a free end, a first assembling hole is formed on the adapter ring, the first magnetic member is fixed inside the first assembling hole, a second assembling hole is formed on the assembling end of the pressing foot and corresponding to the first assembling hole, the second magnetic member is fixed inside the second assembling hole, and the first magnetic member and the second magnetic member attract with each other, such that the combining end of the pressing foot is detachably combined with the adapter ring. 
     
     
       3. The cutting tool of  claim 2 , wherein the pressing foot assembly further comprises a register pin and a register hole, the register hole is formed on one of the adapter ring and the pressing foot, the register pin is disposed on the other one of the adapter ring and the pressing foot, and the register pin engages with the register hole, such that a direction of the opening is parallel to a direction of the blade assembly. 
     
     
       4. The cutting tool of  claim 2 , wherein a protrusion is formed on the free end of the pressing foot, and the opening is formed on the protrusion. 
     
     
       5. The cutting tool of  claim 4 , wherein the protrusion is an arc protrusion. 
     
     
       6. The cutting tool of  claim 2 , wherein a flat portion is formed on the free end of the pressing foot, and the opening is formed on the flat portion. 
     
     
       7. The cutting tool of  claim 1 , wherein the sliding block is a screw member, a screw hole is formed on a location of the pressing foot assembly corresponding to the sliding slot, and the screw member is screwed in the screw hole and accommodated in the sliding slot. 
     
     
       8. The cutting tool of  claim 1 , wherein the an object to be cut by the cutting tool is a corrugated sheet with wave-shaped core layers or a solid sheet. 
     
     
       9. The cutting tool of  claim 1 , wherein a thread structure is formed on the end of the adjusting rod where the blade holder is combined, and the thread structure is combined with the blade holder, so as to adjust a length of the blade protruding from the opening. 
     
     
       10. The cutting tool of  claim 1 , wherein when the cutting tool moves along a first direction substantially perpendicular to the second direction, the pipe drives the pressing foot assembly to keep pressing against an object in the second direction, such that the blade assembly protrudes from the opening and cuts the object during a process that the pressing foot assembly keeps pressing against the object to collapse a plurality of wave-shaped core layers of the object along the second direction, and the spring generates a resilient force to drive the pressing foot assembly to collapse the plurality of wave-shaped core layers of the object before the blade assembly protrudes from the opening. 
     
     
       11. The cutting tool of claim 1, wherein the blade assembly passes through the pipe and the pressing foot assembly in a slidable manner, and the blade assembly comprises:
 an adjusting rod passing through the pipe;   a blade holder, an end of the blade holder combined with an end of the adjusting rod; and   a blade fixed on the other end of the blade holder.   
     
     
       12. The cutting tool of claim 11, wherein a thread structure is formed on the end of the adjusting rod where the blade holder is combined, and the thread structure is combined with the blade holder, so as to adjust a length of the blade protruding from the opening.