Fire Blasting Device Having Rotating Device

Abstract

A fire blasting device for manufacturing a medical glass container prevented from breakage and deformation. A glass container is placed on the outer peripheral surface of each of a first roller and a second roller, which are disposed side by side in such a manner that the axis lines are parallel to each other. The axis line of the glass container is parallel to the axis lines of the first roller and the second roller. The entire outer peripheral surface in an inner surface of the glass container corresponding to a region deteriorated by processing is made to abut on the outer peripheral surface of each of the first roller and the second roller. A flame is ejected from a point burner to the region deteriorated by processing in the inner surface of the glass container while rotating the glass container by rotating the first roller and the second roller around the axis lines.

1 . A fire blasting device for a medical glass container comprising:
 a first roller rotatable around an axis line;   a second roller which is disposed so that an axis line is parallel to the axis line of the first roller and which is rotatable around the axis line; and   a point burner which is disposed facing one end of each of the first roller and the second roller, a tip of which is located above the first roller and the second roller, and which can eject a flame from the tip of the point burner, wherein   a distance of a closest portion between the outer peripheral surface of each of the first roller and the second roller is smaller than an outer diameter of the glass container placed on the outer peripheral surface of each of the first roller and the second roller,   a length in an axial direction of each of the first roller and the second roller is longer than a length in an axial direction of an outer peripheral surface corresponding to a region deteriorated by processing in an inner surface of the glass container, and   a tip of the point burner is movable between a standby position in an outside of the glass container and a position which is located in the internal space of the glass container and faces the region deteriorated by processing in the inner surface of the glass container.   
     
     
         2 . The fire blasting device for a medical glass container according to  claim 1 , wherein
 the length in the axial direction of each of the first roller and the second roller is longer than a length in an axial direction of the entire outer peripheral surface having a largest diameter in the glass container.   
     
     
         3 . The fire blasting device for a medical glass container according to  claim 1 , further comprising:
 an abutment member which is disposed so as to face other ends of the first roller and the second roller and project upward from the first roller and the second roller and in which at least a portion abutting on a bottom portion of the glass container in a surface on a side of the first roller and the second roller has a flat surface.   
     
     
         4 . The fire blasting device for a medical glass container according to  claim 1 , wherein
 heat dissipation performance of members forming at least outer peripheral surfaces of the first roller and the second roller is higher than heat dissipation performance of stainless steel.   
     
     
         5 . The fire blasting device for a medical glass container according to  claim 4 , wherein
 the members forming at least the outer peripheral surfaces of the first roller and the second roller contain graphite.   
     
     
         6 . The fire blasting device for a medical glass container according to  claim 3 , wherein
 the abutment member has heat dissipation performance higher than heat dissipation performance of stainless steel.   
     
     
         7 . The fire blasting device for a medical glass container according to  claim 6 , wherein
 the abutment member contains graphite.   
     
     
         8 . The fire blasting device for a medical glass container according to  claim 1 , further comprising:
 a rotation control unit capable of arbitrarily controlling a number of rotations of the roller pair and changing the number of rotations.   
     
     
         9 . The fire blasting device for a medical glass container according to  claim 1 , further comprising:
 a plurality of roller pairs containing the first roller and the second roller;   two or more of the point burners corresponding to the roller pairs; and   a vial replacing device capable of replacing the glass container placed on the roller pair with another glass container, wherein   each roller pair is disposed side by side so that axis lines of all the rollers are parallel to each other.