JP3996120B2 - Cap bottle and bottle manufacturing method - Google Patents

Description

According to the present invention, a glass bottle having a male screw on the outer peripheral surface of the mouth and having a mark for confirming a tightening condition of the cap below the male screw, and a female screw to be screwed with the male screw are formed on the inner peripheral surface of the peripheral wall. The present invention relates to a bottle with a cap comprising a cap provided with a mark corresponding to the mark on the outer peripheral surface of the bottle, and a method for producing the bottle.

In this kind of bottle with a cap, a mark and a mark are formed on the bottle and the cap so that the tightening condition of the cap can be confirmed by the positional relationship between the mark and the mark when the cap is tightened (Patent Document 1). . Commonly used as a mark for the bottle is a small protrusion formed on the outer surface, and such a protrusion is formed by a recess provided on the molding surface of the finishing die.
JP 2002-104476 A

  FIG. 1 is an explanatory view of a glass bottle molding process (blow and blow method). 1A to 1C, a parison P as a semi-finished product is manufactured from a molten glass lump (gob) G using a rough mold 11. In FIG. 1A, gob G is put into the rough mold 11, and in FIG. 1B, it is pressurized with compressed air from above through the baffle 17 (settle blow), and the mouth mold 13 under the rough mold 11 is applied. Mouth is made with glass. At this time, the plunger 16 is set at a predetermined position. In FIG. 1C, the plunger 16 descends, air is blown into the cavity (counter blow), and the parison P is formed by the rough mold 11 and the upper baffle 17. In FIG. 1 (d), the parison P is transferred to the finishing die 12 using a reversing device (mechanism) 18. In this case, the rough mold 11 is opened in a split state, the parison P is inverted on the finishing mold 12, and the mouth mold 13 supported at the tip of the mechanism 18 is opened in a split state. 13 and the parison P held by the guide ring 14 is dropped into the finishing mold 12. 1E to 1F, a glass bottle B as a final product is formed (final blowing) in the finishing mold 12, and the glass bottle B is taken out from the finishing mold 12 in FIG.

  The male screw of the bottle mouth is molded with a mouth mold at the time of parison molding, and the mark on the outer periphery of the bottle is molded with a finishing mold. In the process of FIG. 1D, the parison may rotate when the mouth mold 13 is opened in half and the parison P is dropped into the finishing mold 12, and the positional relationship between the male screw of the mouth and the mark is There is a possibility of going crazy. This misalignment can be as much as 8 mm, which often causes problems in confirming the tightness of the cap.

  An object of the present invention is to develop a bottle with a cap that can minimize the positional relationship between the male screw and the mark at the mouth of the bottle and can accurately check the tightening of the cap.

According to the present invention, a glass bottle having a male screw on the outer peripheral surface of the mouth and having a mark for confirming a tightening condition of the cap below the male screw, and a female screw to be screwed with the male screw are formed on the inner peripheral surface of the peripheral wall. A cap-attached bottle comprising a cap having a mark corresponding to the mark on the outer peripheral surface of the bottle, wherein the mark protrudes from the outer peripheral surface of the bottle by a finish mold with a finish mold formed during parison molding. It is a bottle with a cap characterized by being crushed so as not to be formed.

Further, the present invention is a method for manufacturing a glass bottle having a male screw on the outer peripheral surface of the mouth and a mark for confirming a tightening condition of the cap below the male screw, wherein the parison has a rough mold and a protrusion corresponding to the mark. A step of forming, and finish-molding with a finishing mold having a smooth molding surface corresponding to the protrusion, and crushing the protrusion so as not to protrude from the outer peripheral surface of the bottle to form a mark, This is a manufacturing method of a bottle.

  The mark of the present invention is a rough mold, which is formed by smoothly crushing the projection formed during parison molding by finishing molding with a finish mold, so that it does not protrude from the outer peripheral surface of the bottle, A streak pattern is generated in the portion and can be visually recognized as a mark. Since the projection is formed in the parison by the rough mold, there is no possibility that the positional relationship with the male screw of the mouth is shifted, and it is possible to accurately check the tightening condition of the cap.

  The mark is preferably formed at a position immediately below the lower end of the cap when the cap is tightened on the bottle. The shape of the mark (front shape of the projection of the parison) can be a free shape such as a circle or a triangle. The projection amount of the projection of the parison is preferably about 0.1 to 1 mm.

  The present invention can be applied to both the blow-and-blow system and the press-and-blow glass bottle manufacturing system. The press-and-blow method is the same as the blow-and-blow method except that the parison molding process shown in FIGS. 1B and 1C is different (the parison molding is performed not by blowing but by raising the plunger). .

  FIG. 2 is a cross-sectional view showing an example of forming a parison by a press and blow method. After the gob is put into the rough mold 11, the upper part is closed with the baffle 17, and the plunger 16 is raised to form the parison P. The outer periphery of the mouth of the parison P is formed by a mouth mold, and the outer periphery of the body is formed by a rough mold. The rough mold 11 has one recess 2, whereby the protrusion 1 is formed on the outer peripheral surface of the parison P. Since the positional relationship between the mouth mold and the rough mold is precisely defined, there is no deviation in the positional relationship between the male screw 3 and the protrusion 1. Note that reference numeral 14 in FIG. 2 denotes a guide ring that serves as a guide when the top surface of the parison is molded and the mouth mold is split or united in two.

  Thereafter, the parison P is inverted by the mechanism, dropped into the finishing mold, and final molding is performed (FIGS. 1D to 1F). The finishing mold may be a normal finishing mold, and there is no special configuration corresponding to the projection of the parison, and it may be an ordinary shape that simply molds the outer periphery of the bottle. Therefore, the projection of the parison is crushed by the final molding and becomes smooth without protruding from the outer peripheral surface of the bottle, but a streak pattern is formed on the peripheral portion of the projection and can be visually recognized as the mark 4. Even if the parison rotates when dropped into the finishing die 12, the positional relationship between the male screw and the mark is not affected at all.

  FIG. 3 is a front view of the bottle B and the cap 5 manufactured as described above. A mark 6 for confirming the tightening condition is formed on the outer peripheral surface of the peripheral wall of the cap 5. The mark may have any structure such as a protrusion, a dent, a pattern, etc., and the position can be visually recognized. A female screw (not shown) is provided on the inner peripheral surface of the peripheral wall to be screwed with the male screw 3 of the bottle. A mark 4 is formed on the outer periphery of the body of the bottle B so as to be positioned immediately below the mark 6 when the cap is properly tightened. The mark 4 does not protrude from the outer peripheral surface of the bottle B and is smooth. However, since the peripheral part of the projection 1 of the parison P remains as a streak pattern, the mark 4 functions as a visible mark 4.

  FIG. 4 is a cross-sectional view showing an example in which a parison is formed by a blow and blow method. After the gob is put into the rough mold 11, the upper part is closed with the baffle 17, and the parison P is formed by counter blow after settling blow. The outer periphery of the mouth of the parison P is formed by a mouth mold, and the outer periphery of the body is formed by a rough mold. The rough mold 11 has one recess 2, whereby the protrusion 1 is formed on the outer peripheral surface of the parison P. Since the positional relationship between the mouth mold and the rough mold is precisely defined, there is no deviation in the positional relationship between the male screw 3 and the protrusion 1.

  Thereafter, as in the case of the press-and-blow method, final molding is performed by a normal finishing die. As a result, the projection 1 of the parison is crushed and flattened, but since the peripheral portion of the projection 1 of the parison P remains as a streak pattern, it becomes a visible mark.

It is explanatory drawing of the glass bottle manufacturing process by a blow and blow system. It is sectional explanatory drawing of the parison shaping | molding by a press and blow system. It is front explanatory drawing of the glass bottle and cap of an Example. It is sectional explanatory drawing of the parison shaping | molding by a blow and blow system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Protrusion 2 Concave part 3 Male screw 4 Mark 5 Cap 6 Mark 11 Coarse type 12 Finishing type 13 Mouth type 14 Guide ring 15 Bottom type 16 Plunger 17 Baffle 18 Mechanism

Claims (2)

A glass bottle having a male screw on the outer peripheral surface of the mouth and having a mark for confirming the tightening of the cap below the male screw, and a female screw to be screwed with the male screw are formed on the inner peripheral surface of the peripheral wall. A bottle with a cap comprising the mark and a cap provided with a corresponding mark, wherein the mark is crushed so that the projection formed at the time of parison molding with a rough mold does not protrude from the outer peripheral surface of the bottle by finish molding with a finishing mold. Cap bottle characterized by being formed A method of manufacturing a glass bottle having a male screw on the outer peripheral surface of the mouth and having a mark for confirming a tightening condition of the cap below the male screw, the step of molding a parison having a projection corresponding to the mark with a rough mold, A method for producing a bottle, comprising: finish-molding with a finishing mold having a smooth molding surface corresponding to the protrusion, and crushing the protrusion so as not to protrude from the outer peripheral surface of the bottle to form a mark.

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