TUBE INSERTION HOLE BORING APPARATUS AND THE BORING METHOD OF HEADER PIPE FOR REGENERATOR

摘要

The present invention improves productivity by reducing the cost and at the same time improves productivity by drilling the tube insertion hole semi-automatically in the header pipe formed of semi-circular aluminum, and also prevents the header pipe from being crushed during the drilling of the tube insertion hole to eliminate product defects. The present invention relates to a tube insertion hole drilling apparatus for a heat exchanger header pipe, and a drilling method thereof.;The fabric mill of the present invention includes a core 10 having a punch groove 11 and introduced into the header pipe 1; A lower mold 20 having an injection groove 21 into which the header pipe 1 is fitted; A pedestal (30) supported by the spring (31) so as to be able to lift and lower the input groove (21) to support the header pipe (1); An upper mold 40 disposed on an upper portion of the lower mold 20 to move up and down through a press P; A punch 50 arranged in the upper die 40 to drill the tube insertion hole 2; Two holders 60 supporting both ends of the core 10 such that the tube insertion hole 2 faces rearward; A stripping pin (70) for detaching the scrap (3) while being introduced and discharged into the tube insertion hole (2); A discharge bar 80 for discharging the core 10 while being injected into and discharged into the header pipe 1; It comprises a cylinder (C1) (C2) for operating the stripping pin 70, the discharge bar 80, respectively.;       Header pipe, tube insertion hole, heat exchanger, drilling device, drilling method