Method and apparatus for continuously manufacturing metal sheets

Abstract

The present invention relates to a method and an apparatus for continuously manufacturing metal sheets. The method includes: (a) providing a first metal coil having a first end and a second end; (b) continuously driving the first end of the first metal coil to move forward; (c) providing a second metal coil having a first end and a second end; and (d) lapping and rolling the first end of the second metal coil and the second end of the first metal coil, so that the second metal coil moves forward following the first metal coil. In this way, the present invention only causes a few seconds' delay in rolling, so a small piler is needed, thus reducing the space of the production line and saving the facility cost.

1 . A method for continuously manufacturing metal sheets, comprising:
 (a) providing a first metal coil having a first end and a second end;   (b) continuously driving the first end of the first metal coil to move forward;   (c) providing a second metal coil having a first end and a second end;   (d) lapping and rolling the first end of the second metal coil and the second end of the first metal coil, so that the second metal coil moves forward following the first metal coil.   
   
   
       2 . The continuously manufacturing method as claimed in  claim 1 , further comprising a step of mainly processing the first metal coil after Step (a). 
   
   
       3 . The continuously manufacturing method as claimed in  claim 2 , wherein the mainly processing method is selected from among cold rolling, acid pickling, annealing, zinc-plating, baking varnish, finishing, tempering, leveling, punching, and roll forming. 
   
   
       4 . The continuously manufacturing method as claimed in  claim 1 , further comprising a step of preprocessing the first end of the second metal coil and the second end of the first metal coil after Step (c). 
   
   
       5 . The continuously manufacturing method as claimed in  claim 4 , wherein the preprocessing step comprises surface treatment, so as to expose the metal substances at the first end of the second metal coil and the second end of the first metal coil. 
   
   
       6 . The continuously manufacturing method as claimed in  claim 5 , wherein the method of surface treatment is selected from among mechanical polishing, mechanical sand-blasting, stamping, and plasma spraying. 
   
   
       7 . The continuously manufacturing method as claimed in  claim 4 , wherein the preprocessing step comprises heating, so as to heat up the first end of the second metal coil and the second end of the first metal coil. 
   
   
       8 . The continuously manufacturing method as claimed in  claim 1 , further comprising a step of post-processing a rolled portion between the first end of the second metal coil and the second end of the first metal coil after Step (d). 
   
   
       9 . The continuously manufacturing method as claimed in  claim 8 , wherein the post-processing step comprises trimming off protruding portions at both sides of the rolled portion. 
   
   
       10 . The continuously manufacturing method as claimed in  claim 8 , wherein the post-processing step comprises forming a mark on the rolled portion. 
   
   
       11 . The continuously manufacturing method as claimed in  claim 1 , further comprising a step of mainly processing the second metal coil after Step (d). 
   
   
       12 . The continuously manufacturing method as claimed in  claim 11 , wherein the mainly processing method is selected from among cold rolling, acid pickling, annealing, zinc-plating, baking varnish, finishing, tempering, leveling, punching, and roll forming. 
   
   
       13 . An apparatus for continuously manufacturing metal sheets, comprising:
 a first unwinder, for unwinding a first metal coil;   a second unwinder, for unwinding a second metal coil;   a rolling device, for rolling one end of the first metal coil and one end of the second metal coil; and   a conveyor device, for continuously driving the first metal coil and the second metal coil joined to the first metal coil.   
   
   
       14 . The continuously manufacturing apparatus as claimed in  claim 13 , further comprising a main processing device, for processing metal coils passing through it. 
   
   
       15 . The continuously manufacturing method as claimed in  claim 14 , wherein the processing method of the main processing device is selected from among cold rolling, acid pickling, annealing, zinc-plating, baking varnish, finishing, tempering, leveling, punching, and roll forming. 
   
   
       16 . The continuously manufacturing apparatus as claimed in  claim 13 , further comprising a preprocessing device, for preprocessing the end of the second metal coil and the end of the first metal coil. 
   
   
       17 . The continuously manufacturing apparatus as claimed in  claim 16 , wherein the preprocessing device comprises a surface treatment device, for exposing the metal substances at the end of the second metal coil and the end of the first metal coil. 
   
   
       18 . The continuously manufacturing apparatus as claimed in  claim 16 , wherein the preprocessing device comprises a heating device, for heating up the end of the second metal coil and the end of the first metal coil. 
   
   
       19 . The continuously manufacturing apparatus as claimed in  claim 13 , further comprising a post-processing device, for post-processing a rolled portion between the end of the second metal coil and the end of the first metal coil. 
   
   
       20 . The continuously manufacturing apparatus as claimed in  claim 19 , wherein the post-processing device comprises a trimming device, for trimming off protruding portions at both sides of the rolled portion. 
   
   
       21 . The continuously manufacturing apparatus as claimed in  claim 19 , wherein the post-processing device comprises a marking device, for forming a mark on the rolled portion. 
   
   
       22 . The continuously manufacturing apparatus as claimed in  claim 13 , wherein the first metal coil and the second metal coil are of the same material. 
   
   
       23 . The continuously manufacturing apparatus as claimed in  claim 13 , wherein the first metal coil and the second metal coil are of different materials. 
   
   
       24 . The continuously manufacturing apparatus as claimed in  claim 13 , wherein the rolling device comprises two rollers, for contacting the end of the first metal coil and the end of the second metal coil. 
   
   
       25 . The continuously manufacturing apparatus as claimed in  claim 13 , further comprising a winder, for continuously winding the first metal coil and the second metal coil joined to the first metal coil.