Technical field
[0001]
　The present invention relates to a method for producing a medical glass container suppressed occurrence of cracks.
Background technique
[0002]
　As a raw material of the medical glass container, such as a medical vial, borosilicate glass is often used with excellent chemical durability. By glass tube made of borosilicate glass is deformed while being heated, the mouth portion and the bottom portion of the vial is molded. Borosilicate glass by being heated, alkaline components contained in the borosilicate glass is volatilized. Volatile alkaline component results in a machining deteriorated area in particular by condensing the inner bottom surface in the vicinity of the vial. Such processing degradation region, there is a risk of elution of alkaline components against such pharmaceutical agent to be stored in the vial. In contrast, in such ISO4802-1 or ISO4802-2, elution standard of alkali components it is defined.
[0003]
　As a method for reducing the elution of alkaline components, while rotating the vial molded from the glass tube, against degradation glass produced on the inner surface of the vial, oxygen according to point burner - it is known a method of fire blast gas flame are (see Patent documents 1 and 2).
CITATION
Patent Literature
[0004]
Patent Document 1: WO 2006/123621 Patent Publication
Patent Document 2: JP 2010-269973 JP
Summary of the Invention
Problems that the Invention is to Solve
[0005]
　In Fire blast, to the flame ejected from the nozzle point burner to the optimum position, it is preferred to insert the nozzle point burner to the internal space of the vial. When the nozzle points burner is inserted into the distal end of the vial, the tip of the nozzle approaches the opening of the vial. In this case, near the opening of the vial is heated by the flame that is ejected from the nozzle point burner. By near the opening of the vial is heated, cracks were found inventors that tends to occur in the vicinity of the opening of the glass container.
[0006]
　The present invention has been made in view of these circumstances, and its object is a method of manufacturing a medical glass container to be molded borosilicate glass glass tube as a raw material, a crack occurs in the medical glass container to provide a hard means.
Means for Solving the Problems
[0007]
　(1) A method of manufacturing a medical glass container according to the present invention, the tip of the point burner being ignited, from the position the flame jetted from the tip of the point burner does not contact the glass container, the outside of the glass container a first step of moving a at the position opposed to the opening of the glass container, the tip of the point burner is ignited, and a second step of inserting into the interior space of the glass container through the opening, the glass container the while maintaining the tip of the point burner to the internal space, and a third step of colliding a flame ejected from the tip of the point burner on the inner surface of the glass container, the tip of the point burner is ignited, apertures the fourth step of moving from the inside to the outside space of the glass container, the tip of the point burner is ignited, versus the opening of the glass container through From a position direction, the flame ejected from the tip of the point burner and a fifth step of moving to a position not in contact with the glass containers, at least in the second step and the fourth step, the in the third step weak thermal power of the flame from the thermal of the point burner flame impinging on the inner surface of the glass container ejected from the point burner.
[0008]
　In the molding process of the glass container, the processing degradation region occurs on the inner surface of the glass container. In the third step, the tip of the point burner is positioned in the inner space of the glass container, the flame ejected from the tip of the point burner impinging on the inner surface of the glass container. Thus, the processing degradation region is removed from the inner surface of the glass container.
[0009]
　In the second step and fourth step, ejecting a weak thermal power of the flame from the thermal flame point burner impinging on the inner surface of the glass container in the third step from the point burner. Thus, when the tip of the point burner pass through the opening of the glass container, it can be suppressed heat applied to the vicinity of the opening of the glass container.
[0010]
　(2) Preferably, at least in the first step and the fifth step, by positioning a shielding mechanism to near the opening of the glass container, the flame ejected from the tip of the point burner by the shielding mechanism within the glass vessel to shield that contact.
[0011]
　In the first step and the fifth step, the tip of the point burner is external to the glass container, position the flame near the opening of the glass container is rotated between a position where it does not contact the glass container. In this case, the shielding mechanism, the flame ejected from the tip of the point burner shield so as not to contact the glass container.
[0012]
　(3) Preferably, in the above process, the opening of the glass container is supported so as to face upward from the horizontal direction, at least in the second step and the fourth step, the nozzles constituting the tip of the point burner in a state where along a direction parallel to the axis of the glass container is moved relative to the glass container.
[0013]
　Thus, the tip of the point burner, between the outside and the inside of the glass container to move parallel to the axis of the glass container. Flame ejected from the tip of the point burner is ejected in a direction parallel to the axis of the glass container. When passing through the vicinity of the neck of the tip glass containers point burner, can be suppressed that the flame contacts the inner surface near the opening of the glass container. Further, since the opening of the glass container is supported so as to face upward from the horizontal direction, without glass containers are moved in the horizontal direction is maintained in a stable position.
[0014]
　(4) Preferably, the in the third step, the glass container supported by a pair of rollers, while the flame ejected from the tip of the point burner collide with the inner surface of the glass container by rotation of the roller the glass container is rotated.
[0015]
　Thus, uniform flame circumferentially on the inner surface of the glass container is a collision.
[0016]
　(5) Preferably, using the shielding plate capable of shielding the flame ejected from the tip of the point burner as the shielding mechanism, in the first step and the fifth step, the edge defining the opening of the glass container a portion to position the the shielding plate between the tip of the point burner.
[0017]
　Thus, the shielding mechanism of simple structure is realized.
[0018]
　(6) Preferably, in the first step and the fifth step to position the shield plate between the tip of the upper and the point burner edge of the glass container.
[0019]
　(7) Preferably, in the first step and the fifth step, the tip of the point burner moves relative to the glass container by rotating the point burner.
[0020]
　Thus, in the first step and the fifth step, the moving distance of the point burner relative to the axis direction of the glass container is shortened, the tip of the point burner is largely separated from the glass container.
Effect of the invention
[0021]
　According to the present invention, in the manufacturing method of the medical glass container is formed from a glass tube made of borosilicate glass, the machining deteriorated area is removed using a flame point burner, and cracks occur in the medical glass container it can be suppressed.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022]
[1] Figure 1 is a fire blast apparatus 80 according to an embodiment of the present invention, the point burner 30 is a schematic view of a state in the standby position.
FIG. 2 is a point burner mobile device 40 is a schematic view of a state in which the point burner 30 is along the horizontal direction (front-rear direction 103).
[3] FIG. 3 (A), the FIG. 3 (B) is a schematic diagram showing a state where a part is shielded mouth 13 by the shielding plate 51 vial 10 is placed on the roller pair 60.
[4] FIG. 4 (A), in the first step is a diagram showing a state where the point burner 30 is at the standby position, FIG. 4 (B), the flame 31 ejected from the tip of the point burner 30 is is a diagram showing a state of being shielded by the shielding plate 51, FIG. 4 (C) is a diagram showing a state nozzles 32 point burner 30 along a direction parallel to the axis of the glass container.
FIG. 5, in the second step is a diagram showing a state where the nozzle 32 of the point burner 30 is inserted into the internal space 14 of the vial 10.
FIG. 6 is a diagram illustrating a like point burner 30 in the third step.
DESCRIPTION OF THE INVENTION
[0023]
　Hereinafter will be described the preferred embodiments of the present invention. This embodiment is merely one embodiment of the present invention, it goes without saying that changes to the embodiments within a range not changing the gist of the present invention.
[0024]
[Fire blast schematic of the apparatus 80]
　As shown in FIG. 1, fire blasting apparatus 80 has a point burner 30, the point burner moving device 40, roller pair 60 and the shield plate 51. Fire blasting apparatus 80 is an apparatus for performing the fire blast vial 10 (an example of the glass container). Hereinafter, the components of the fire blasting device 80 is described in detail. In the following description, it is defined vertical direction 101 relative to the vertical in FIG. 1, the left-right direction 102 relative to the direction perpendicular to the plane of FIG. 1 is defined, in a direction perpendicular to these vertical 101 and horizontal direction 102 , the front-rear direction 103 is defined.
[0025]
[Point burner 30]
　As a point burner 30 illustrated in Figures 1 and 2 has a burner body 33 and nozzle 32 are connected to the cylinder and the flow rate control device (not shown).
[0026]
　Burner body 33 is generally a cylindrical shape, a flow path combustible gas and oxygen can flow each such liquefied natural gas, a mixed gas formed by these flow paths merge, the mixture gas can flow a flow channel is formed in the internal space. Burner body 33, cylinder combustible gas is stored and the oxygen are respectively connected to the pooled cylinder at the proximal end side. Between the burner body 33 to each cylinder, a flow control device for controlling the combustible gas and oxygen flow rates, respectively (not shown) is provided. Flow control device, known can be employed.
[0027]
　Nozzle 32 is connected to the distal end side of the burner body 33. Nozzle 32 is straw-like, mixed gas flowing out from the burner body 33 can be circulated. The outer diameter of the nozzle 32 is a insertable into the interior space 14 of the vial 10, designed in a state where the tip of the nozzle 32 is positioned in the inner space 14 of the vial 10, in the axial direction modifiable thickness of the nozzle 32 It is. That is, the outer diameter of the nozzle 32 is sufficiently thinner than the inner diameter of the neck 18 of the vial 10. The length along the axial direction of the nozzle 32 is sufficiently longer than the length in the axial direction of the vial 10. The material of the nozzle 32, for example, has high heat resistance, such as ceramic are preferable.
[0028]
　Gas mixture from the internal space of the burner body 33 through the inner space of the nozzle 32, and flows out from the tip of the nozzle 32 is the tip of the point burner 30 to the outside. By igniting the mixed gas flowing out from the tip of the nozzle 32 to the outside, the flame is ejected from the tip of the point burner 30. Thermal flame 31 ejected from the tip of the point burner 30 can be controlled by disobedience the respective flow rates of gas and oxygen by the flow rate control device. Incidentally, the strength of the thermal is defined by typically heat in per hour (kcal / h).
[0029]
[Point burner moving device 40]
　point burner mobile device 40 is intended for relatively moving the point burner 30 to the vial 10. As shown in FIG. 1, point burner moving device 40 is provided with a rotating device 41, the sliding device 42 and the burner support unit 43.
[0030]
　Rotation device 41 has rotating shaft 44, a driving device for rotation of the rotation shaft support portion 45 and not shown. Rotating shaft 44 is rotatably supported in a state in which along the axial direction in the lateral direction 102 by the rotation shaft support portion 45. The pivot shaft 44, the burner support portion 43 is fixed. Point burner 30 is connected to the rotating shaft 44 through the burner support unit 43. By the rotating shaft 44 rotates, the point burner 30 with a burner support portion 43 is pivotally moved about the pivot shaft 44. Although not shown in the figure, the rotating shaft 44, the driving force is input from a drive source such as a stepping motor. By rotating direction and amount of rotation of the drive source is controlled, the point burner 30 is rotated to a desired rotational position.
[0031]
　Slide device 42 includes a driving device for sliding the sliding portion 46, the slide unit support base 47 and not shown. Slide unit 46 is slidably loaded in the front-rear direction 103 on the upper surface of the sliding portion support table 47. Although not appear in detail in the drawings, the upper surface of the sliding portion support table 47 is provided with a guide along the front-rear direction 103, the sliding portion 46 is guided in the longitudinal direction 103 by the guide. The slide portion 46, the driving force is input from a drive source such as a stepping motor. By the orientation and the driving amount for the longitudinal direction 103 of the driving force supplied from the drive source is controlled, the slide portion 46 is slid to a desired position with respect to the front-rear direction 103. With the sliding of the sliding portion 46, the rotary shaft support portion 45 and the point burner 30 is moved.
[0032]
　Position of the point burner 30 shown in FIG. 1 is a standby position. In the standby position, the point burner 30 is generally located in the right direction from the rotating shaft 44 in FIG. 1, located far from the vial 10. Further, the flame 31 ejected from the tip of the nozzle 32 of the point burner 30 is generally faces upwardly, is a position not in contact with the vial 10. By rotating shaft 44 rotates counterclockwise, the point burner 30 is movable in the sliding position as shown in FIG. In the slide position, the axial direction of the point burner 30 may be slightly inclined relative to the horizontal direction (front-rear direction 103). Axial point burner 30 is parallel to the axis of the roller pair 60 and the vial 10 to be described later. The tip of the nozzle 32 of the point burner 30 is such that a lower than base end side, the axis is inclined with respect to the horizontal direction (front-rear direction 103). The axis of the nozzle 32 is inclined from 0 to 10 degrees with respect to the horizontal direction (front-rear direction 103). The tip of the nozzle 32 of the point burner 30 is outside the vial 10 is in position facing the opening 16 of the vial 10. From the slide position, by the rotation shaft 44 is rotated clockwise, the point burner 30 is movable in the standby position from the slide position.
[0033]
[Rollers 60]
　As shown in FIG. 3 (A) and FIG. 3 (B), the roller pair 60 is first roller 61 and second roller 62 of the pair. The first roller 61 and second roller 62 are each slightly tilted rotation axis with respect to the longitudinal direction 103, are parallel along a lateral direction 102. The first roller 61 and second roller 62, so that the surface which faces the point burner 30 is above the opposite side, the axis is inclined with respect to the horizontal direction (front-rear direction 103). The axis of the roller pair 60 is inclined from 0 to 10 degrees with respect to the horizontal direction (front-rear direction 103). The distance between the first roller 61 and second roller 62 is sufficiently narrow with respect to the outer diameter of the vial 10. In the manner the outer peripheral surface of the vial 10 to the outer peripheral surfaces of both the first roller 61 and second roller 62 are in contact, the vial 10 on the roller pair 60 is placed. The axis of the mounted vial 10 on the roller pair 60 is parallel to the axis of the first roller 61 and second roller 62. When the first roller 61 and second roller 62 in this state is rotated in the same direction, placed on the vial 10 on the roller pair 60 is rotated about the axis of the vial 10. Although not shown in the figures, the first roller 61 and second roller 62, the driving force is input from a drive source such as a motor. In each figure, the support mechanism for rotatably supporting the roller pair 60 are omitted.
[0034]
　With respect to the roller pair 60, the opposite point burner 30 in the longitudinal direction 103, wear plate 20 is provided. Wear plate 20 is a flat surface of the roller pair 60 side of the plane, it is disposed so as to protrude from the pair of rollers 60 upward. Wear plate 20 can be brought into contact with the bottom 11 of the mounting vial 10 to the roller pair 60. The wear plate 20, the bottom of the loading vial 10 to the roller pair 60 is positioned with respect to the longitudinal direction 103.
[0035]
[Shield plate 51 '
　shielding plate 51 is an example of a shielding mechanism. As shown in FIG. 3 (A) and FIG. 3 (B), the shield plate 51 is a thin flat plate in the front-rear direction 103. The shielding plate 51 is a trapezoidal shape which narrows toward the lower side in the left-right direction 102. Width in the horizontal direction 102 of the shield plate 51 is designed wider than the outer diameter of the mouth portion 13 of the vial 10. The shielding plate 51 has one of its front and back surfaces, so as to spread in the vertical direction 101 and lateral direction 102, and is positioned between the roller pair 60 and the point burner 30 in the longitudinal direction 103. As shown in FIG. 3 (A), the shielding plate 51 is inclined in the front-rear direction 103 so as to be parallel to the edge 17 defining the opening 16 of the vial 10. The shielding plate 51 is slightly disposed above the roller pair 60. The lower end of the shield plate 51 in the vertical direction 101, located slightly above the center of the opening 16 of the vial 10. Face of the shield plate 51 of the vial 10 side faces while close to the part of the upper end surface having an edge 17 of the mouth 13.
[0036]
　The position of the shield plate 51 is preferably movable in accordance with the size of the placed vial 10 to the roller pair 60. Although not shown in detail in the drawings, the shielding plate 51 is preferably movable with respect to the vertical direction 101. Position of the shield plate 51, as will be described later, is adjusted to be between the upper part and point burner 30 of the edge 17 defining the opening 16 of the vial 10. Flames ejected from the tip of the point burner 30 31 is movable in the vertical direction 101 while being in contact with the central portion in the lateral direction 102 of the shield plate 51 from top to bottom. As a material of the shield plate 51, as long as it blocks the flame 31 ejected from the tip of the point burner 30, a metal such as stainless steel, such as good thermal conductivity graphite and the like.
[0037]
[Vial 10]
　Vial 10 is an example of a medical glass container. As shown in FIGS. 3 and 4, the vial 10 is a container of the outline of a generally cylindrical bottom is sealed, has a bottom 11, side portion 12, neck 18 and a mouth portion 13 in order from the left side. Vial 10 has an internal space 14 is opened at one end of the mouth portion 13. Bottom 11 is a flat disk-like shape continuous with the side surface portion 12 at the edge of the bottom portion 11. Side portion 12 has a cylindrical shape. Side section 12, in the axial direction, the outer and inner diameters are formed to be constant. Neck 18 is continuous to the side surface portion 12 narrows from the side surface 12 in a tapered shape. Inner and outer diameters of the neck 18 is molded narrower than the side portion 12. Mouth 13 is continuous to the neck 18, with an opening 16 which is defined by the edge 17. Inner and outer diameters of the mouth portion 13 is formed narrower than the side portion 12. The outer diameter of the mouth portion 13 is formed wider than the narrowest formed portion at the outer diameter of the neck 18.
[0038]
[Method of the vial 10]
　the production method of the vial 10 includes mainly container forming process, a fire blast process. Container forming step is a step of molding the vial 10 from the glass tube. Fire blast process, the flame 31 ejected from the tip of the point burner 30 is a step of colliding the machining deteriorated area on the inner surface 15 of the vial 10.
[0039]
[Vessel molding process]
　As an example, using a general vertical molding machine, the vial 10 is molded by heating the glass tube to rotate is held vertically. The glass tube is softened by being heated by the flame of the burner. By part of the glass tube is softened and deformed, the bottom 11 and mouth portion 13 of the vial 10 is molded from a glass tube. When the bottom is formed, alkali borates, such as borosilicate glass as a raw material for the glass tube is volatilized. Alkaline components such as volatilized alkali borate gives rise to machining deteriorated area attached to the bottom 11 near the inner surface 15 of the vial 10. To remove the machining deteriorated area, fire blast process is performed will be described in detail below.
[0040]
[Fire blast process]
　In fire blast process, fire blasting device 80 is used. Fire blast process, mainly includes the following five steps.
(1) the tip of the point burner 30 is ignited, the position where the flame 31 to be ejected from the tip of the point burner 30 is not in contact with the vial 10, to the position opposite to the opening 16 of the vial 10 an external vial 10 first step of moving.
(2) the tip of the point burner 30 is ignited, a second step of inserting into the interior space 14 of the vial 10 through the opening 16.
(3) while maintaining the tip of the point burner 30 into the internal space 14 of the vial 10, the third step of the flame 31 ejected from the tip of the point burner 30 to collide with the inner surface 15 of the vial 10.
(4) the tip of the point burner 30 is ignited, the fourth step of moving from the inner space 14 of the vial 10 to the outside through the opening 16.
(5) Fifth step of moving the tip of the point burner 30 is ignited, the position facing the opening 16 of the vial 10, to a position where the flame 31 to be ejected from the tip of the point burner 30 does not contact the vial 10.
[0041]
　As shown in FIG. 1, prior to the first step, the vial 10 is placed on the roller pair 60 being rotated. While it is in contact with the bottom 11 Gaate plate 20 of the vial 10 equivalents, vial 10 is rotated about the axis of the vial 10. As shown in FIG. 3, the shielding plate 51 is moved to a position corresponding to the size of the vial 10 in the first step. That is, the shielding plate 51, in the longitudinal direction 103 and the vertical direction 101, is adjusted to be between the upper part and point burner 30 of the edge 17 defining the opening 16 of the vial 10.
[0042]
[First Step]
　In the first step, the shielding plate 51 is positioned near the opening 16 of the vial 10. In a state where the fire blast is not performed as shown in FIG. 4 (A), point burner 30 is located at the standby position. In the standby position, the nozzle 32 points burner 30, as the tip than vial 10 which is placed on the roller pair 60 is positioned above, its axis is inclined relative to the horizontal direction (front-rear direction 103) . Angle the axis of the nozzle 32 is inclined relative to the horizontal direction (front-rear direction 103) is set according to the length of the contour and the nozzle 32 of the vial 10, for example, such that shown in FIG. 4 (A) a, it is about 70 degrees. Point burner 30 has been ignited before the first step is carried out, in the standby position, the flame 31 is ejected from the tip of the nozzle 32 of the point burner 30 is not in contact with the vial 10.
[0043]
　Thermal flame 31 ejected from the tip of the point burner 30 can be controlled by the flow control device. In the first step, thermal flame 31 ejected from the tip of the point burner 30 is adjusted weaker than thermal flame 31 to collide with the inner surface 15 of the vial 10 in the third step. In the first step, thermal flame 31 ejected from the tip of the point burner 30 is strong enough to carry out the fire blast to the vial 10 is not required, to collide with the inner surface 15 of the vial 10 in the third step it is preferably weaker than the thermal flame 31.
[0044]
　FIG. 4 (B), the as shown in FIG. 4 (C), the rotating device 41, point burner 30 of the standby position, the axis of the nozzle 32 is rotated to the position parallel to the axis of the vial 10 . With the rotation of the point burner 30, the flame 31 ejected from the tip of the point burner 30 is also lowered so as to draw an arc. Flame 31 ejected from the tip of the point burner 30 is moved while contacting the lower central portion in the lateral direction 102 of the shield plate 51 from above. At this time, if if not the shielding plate 51 exists, rotation locus of the flame 31 is comprised to overlap with the mouth portion 13 of the mounting vial 10 to the roller pair 60, from the tip of the point burner 30 since the flame 31 to be ejected is to be shielded by the shield plate 51 does not contact the like mouth 13 of the vial 10. When point burner 30 to the position shown in FIG. 4 (C) is rotated, the axis of the nozzle 32 are parallel to the axis of the vial 10, and substantially matches the center of the opening 16 at the tip of the nozzle 32 is vial 10 to. At this time, the tip of the point burner 30 is positioned below the lower end of the shield plate 51, a portion of the flame 31 ejected from the tip of the point burner 30, into the interior space 14 of the vial 10 through the mouth 13 enter in.
[0045]
[Second Step]
　In the second step, thermal flame 31 ejected from the tip of the point burner 30 is adjusted weaker than thermal flame 31 to collide with the inner surface 15 of the vial 10 in the third step. As shown in FIG. 4 (C), after the axis of the nozzle 32 is rotated until they are parallel to the axis of the vial 10, in a second step, the point burner 30 is ignited state, by the slide device 42 , the nozzles 32 of the nozzle 32 in a state that along a direction parallel to the axis of the vial 10 is slid along the horizontal direction to the direction in which enters the interior space 14 of the vial 10 (front-rear direction 103). Thus, as shown in FIG. 5, the tip portion of the nozzle 32 enters into the internal space 14 through the opening 16 of the vial 10.
[0046]
[Third Step]
　As shown in FIG. 6, in the third step, the rotating device 41, such that the tip of the nozzle 32 faces the vicinity of the upper end of the bottom 11 of the inner surface 15 of the vial 10, point burner 30 times It is dynamic. By this rotation, the nozzle 32 points burner 30 has its tip so that the above the proximal end, the axis is inclined relative to the horizontal direction (front-rear direction 103). In this state, thermal flame 31 ejected from the tip of the point burner 30 is adjusted to be strong enough to carry out the fire blast to the vial 10. As thermal flame 31 ejected from the tip of the point burner 30, the alkali components or the like contained in the processing degradation region is necessary strength to be removed to the outside of the vial 10. Flame 31 ejected from the tip of the point burner 30 is impinged on the inner surface 15 of the vial 10. Further, the roller pair 60 is rotated, the vial 10 is rotated to the left about an axis in the state where placed along its axis in the horizontal direction (front-rear direction 103). Thus, the flame 31 ejected from the tip of the point burner 30 is sequentially collides with the circumferential direction of the inner surface 15 of the vial 10. Thus, the processing deterioration area generated on the inner surface 15 of the vial 10 is removed. Process machining deteriorated area is removed by the flame 31 ejected from the tip of the point burner 30 is referred to as fire blast.
[0047]
[Fourth Step]
　In the fourth step, thermal flame 31 ejected from the tip of the point burner 30 is adjusted weaker than thermal flame 31 to collide with the inner surface 15 of the vial 10 in the third step. As shown in FIG. 5, the rotating device 41, point burner 30 is rotated to the axis of the nozzle 32 is parallel to the axis of the vial 10. Subsequently moving, point burner 30 by the slide device 42 to the second step in the opposite direction from above, i.e. by being slid away from the vial 10, the internal space 14 to the outside nozzle 32 through the opening 16 of the vial 10 to (the state shown in FIG. 4 (C)).
[0048]
[Fifth Step]
　In the fifth step, thermal flame 31 ejected from the tip of the point burner 30 is adjusted weaker than thermal flame 31 to collide with the inner surface 15 of the vial 10 in the third step. In the fifth step, point burner 30 is rotated to the standby position shown in FIG. 4 (A) from the position shown in FIG. 4 (C). In the process of point burner 30 is rotated, as shown in FIG. 4 (B), the flame 31 is ejected from the tip of the point burner 30 is shielded by the shield plate 51. Therefore, in this rotation, the flame 31 is ejected from the tip of the point burner 30 is not in contact with the vial 10.
[0049]
[Effects of the Embodiment]
　According to the present embodiment, in the third step, by impinging flame 31 ejected to the machining deteriorated area on the inner surface 15 of the vial 10 from the tip of the point burner 30, the vial 10 processing degradation region is removed from the inner surface 15. In the second step and the fourth step, since the ejected firepower flame 31 weaker than thermal flame 31 point burner 30 to impinge on the inner surface of the vial 10 from the tip of the point burner 30 in the third step, the point burner 30 tip as it passes through the opening 16 of the vial 10, the amount of heat applied to the vicinity of the opening 16, such as the neck portion 18 of the vial 10 is suppressed.
[0050]
　Further, in the first step and the fifth step, the shielding plate 51 prevents the flame 31 is in direct contact with the periphery of the opening 16 of the vial 10. Accordingly, to suppress cracks may occur in the vial 10.
[0051]
　In each step, the opening of the vial 10 is supported so as to face upward from the horizontal direction (front-rear direction 103), at least in the second step and the fourth step, the nozzle 32 of the tip of the point burner 30 vial 10 It moved relative to the vial 10 in a state where along a axis parallel to the direction. Therefore, the tip of the point burner 30 is moved in parallel between the outside and the internal space 14 of the vial 10 with respect to the axial direction of the vial 10. Flame 31 ejected from the tip of the point burner 30 is parallel to the ejection to the axis direction of the vial 10. When the tip of the point burner 30 passes near the neck portion 18 of vial 10, because the flame 31 is parallel to the ejection to the axis direction of the vial 10, the flame to the inner surface near the opening 16 such as the neck portion 18 of the vial 10 31 can be contacted is suppressed.
[0052]
　In the third step, the vial 10 is supported by a pair of rollers 60, while the flame 31 ejected from the tip of the point burner 30 to collide with the inner surface 15 of the vial 10, vial 10 by the rotation of the roller pair 60 It is rotated about the axis of the vial 10. Therefore, the flame 31 ejected from the tip of the point burner 30 is uniformly collide with the circumferential direction of the inner surface 15 of the vial 10.
[0053]
　Further, using a shield plate 51 which can shield the flame 31 ejected from the tip of the point burner 30 as a shielding plate 51, in the first step and the fifth step, a part of the edge portion 17 defining the opening 16 of the vial 10 for positioning the shield plate 51 between the tip of the point burner 30, the shielding mechanism of simple structure is realized.
[0054]
　Further, in the first step and the fifth step, to move relative to the vial 10 to the tip of the point burner 30 by turning the point burner 30, in the first step and the fifth step, the horizontal point burner 30 movement distance becomes shorter in the (longitudinal direction 103). That is, in the first step and the fifth step, the moving distance of the point burner 30 relative to the axis direction of the vial 10 is designed to be short.
[0055]
[Modification]
　In the present embodiment, the shielding plate 51 is employed as the shielding mechanism, effect of the present invention is exerted even in a form shielding mechanism is not employed. For example, without providing the shielding mechanism, in the first step and the fifth step, the heating power of the flame 31 ejected from the tip of the point burner 30, from thermal flame 31 to collide with the inner surface 15 of the vial 10 in the third step by weakly regulated, point burner 30 in the first step and the fifth step when it is rotated, to reduce the amount of heat applied to the vicinity of the mouth portion 13 by contact with the flame 31 near the mouth 13 of the vial 10 be able to.
[0056]
　As the shielding mechanism, not limited to the shielding plate 51, the flame 31 ejected from the point burner 30 may be a mechanism which does not contact the vial 10. For example, in the first step and the fifth step, in place of the shield plate 51, in the vicinity of the mouth portion 13 of the vial 10, to form an air current that flows in a direction intersecting the axis of the vial 10, ejected from the tip of the point burner 30 it may not reach the vial 10 without extinguish the flame 31 that is.
[0057]
　The shape of the shield plate 51 is not particularly limited, the flame 31 ejected from the tip of the point burner 30 is as long as to be prevented from contacting the vicinity of the opening 16 of the vial 10, be other shapes it may be. Further, the shield plate 51 is not limited to a flat plate shape, for example, it may have a shape having a curved surface along the rotation locus of the tip of the nozzle 32.
[0058]
　Further, in the container forming process, although the vial 10 with a common vertical molding machine is molded, other molding methods may be employed. For example, molding the glass container from a glass tube held in a state in which along the axis of the glass tube in a horizontal direction vial 10 may be formed by (so-called using the horizontal molding machine).
[0059]
　The glass container is not limited to the vial 10 may be a glass container of another shape. For example, it may be a glass ampoules shape intermediate product vial 10 is not fully formed, for example, the bottom portion 11 is shaped mouth 13 may be one which has not been molded.
[0060]
　Further, movement to the standby position of the point burner 30 is not limited to the rotation. For example, points in the first step and the fifth step, the point burner 30 in a state of and along the nozzle 32 in the horizontal direction is moved in the vertical direction 101, to the position shown in the standby position, and FIG. 4 (C) burner 30 may be moved. Also, the point burner 30 in a state of and along the nozzle 32 in the horizontal direction may be slid only in the front-rear direction 103. In this case, point burner 30, between the position shown in FIG. 4 (C), and this position than a right, and the flame 31 ejected from the tip of the point burner 30 is not in contact with the vial 10 waiting position It is to move along the longitudinal direction 103.

[Claim 1]
　The tip of the point burner being ignited, the flame is ejected from the tip of the point burner moves from a position not in contact with the glass container, an outside of the glass container to a position opposed to the opening of the glass container a first step,
　the tip of the point burner is ignited, and a second step of inserting into the interior space of the glass container through the opening,
　while maintaining the tip of the point burner to the internal space of the glass container, the point a third step of colliding a flame ejected from the tip of the burner on the inner surface of the glass container,
　the tip of the point burner is ignited, the fourth step of moving from the inner space of the glass container to the outside through the opening ,
　the tip of the point burner is ignited, the position opposed to the opening of the glass container, from the tip of the point burner Includes a fifth step of flames that appear to move to a position not in contact with the glass container, and
　at least the second step and the fourth step, the point burner impinging in the third step on the inner surface of the glass container method for producing a medical glass container for a weak thermal power of the flame from the thermal flame ejected from the point burner.
[Claim 2]
　In at least the first step and the fifth step, by positioning a shielding mechanism to near the opening of the glass container, the flame ejected from the tip of the point burner shield makes contact with the glass container by the shielding mechanism method for producing a medical glass container according to claim 1.
[Claim 3]
　In the above steps, the opening of the glass container is supported so as to face upward from the horizontal direction,
　at least in the second step and the fourth step, the nozzles constituting the tip of the point burner and the axis of the glass container method for producing a medical glass container according to claim 1 or 2 is moved relative to the glass container in a state where along a parallel direction.
[Claim 4]
　In the third step, the glass container supported by a pair of rollers, while the flame ejected from the tip of the point burner collide with the inner surface of the glass container, rotating the glass container by rotation of the roller according method for producing a medical glass container according to claim 3.
[Claim 5]
　Using a shielding plate capable of shielding the flame ejected from the tip of the point burner as the shielding mechanism, the in the first step and the fifth step, a portion above the point burner edges defining the opening of the glass container method for producing a medical glass container according to claim 2 to position the shield plate between the tip of the.
[Claim 6]
　In the first step and the fifth step, the production method of the medical glass container according to claim 5 to position the shield plate between the tip of the upper and the point burner edge of the glass container.
[Claim 7]
　In the first step and the fifth step, by rotating the point burner medical glass container according to any one of the tip of the point burner claims 1 to move relative to the glass container 6 Production method.