JPH0570159A - Pouring port forming method for glass vessel and equipment therefor - Google Patents

Abstract

PURPOSE:To favorably form the title pouring port with improved yield and quality by heating and softening a pouring port forming part of a glass vessel having an inwardly tilted opening edge followed by raising the part from inside to make a preliminary forming. CONSTITUTION:Firstly, a preliminarily forming member 6 is held at a waiting position A using a preliminarily forming equipment 10 for pouring port and a locally heated glass vessel 1 is moved and set up to a specified position with a turntable 8. Second, the member 6 is made to descend to a position B through a vertical cylinder 15 and a rod 16. Third, the member 6 is moved to a position C through a horizontal cylinder 17 and a rod 18 and a preliminarily forming plate 6b is brought into contact, from inside, with the locally heated and softened part 1b of an opening edge 1a. Fourth, the member 6 is raised from the position C to a position D to raise the softened part 1b with the forming plate 6b to make a preliminary forming. Thence, the vessel 1 is moved to a specified position with a turntable 8 to normally form a pouring port, thus producing a glass vessel with the pouring port.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spout forming method and apparatus for glass containers such as beakers and teapots. More specifically, the spout is formed at the opening edge of a glass container having an inwardly inclined opening edge. A method and apparatus.

[0002]

2. Description of the Related Art Molding of a spout of a blow-molded glass container such as a beaker is carried out by locally heating the upper opening edge of the glass container to soften it and extruding the softened portion from the inside to the outside. Such a spout is formed so as to have a stable shape so that no wrinkles are generated on the molding surface, but depending on the type of glass container, it may be difficult to form the spout as described above.

For example, referring to FIG. 6 and FIG. 7, the operation procedure of the spout forming process of the glass container (1) will be described.
The glass container (1) shown in FIG. 6 is a bottomed cylindrical container.
The upper part integrally has an opening edge (1a) inclined inward. The glass container (1) is positioned and mounted on the horizontal stage (2), and the portion of the opening edge (1a) where the spout is to be formed is locally heated by the heating burner (3) to soften it. After heating, the softened portion (1b) of the opening edge (1a) is extruded to the outside by a plate-shaped molding member (4) as shown by the chain line in FIG. 7 to form the spout (1c).

[0004]

The glass container (1) is intermittently conveyed to a heating position and a spout molding position by a turntable or the like, and the opening edge (1a) is heated at the heating position.
Is locally heated and the opening edge (1
A spout is formed in the locally heated softening part (1b) of a). By the way, while the glass container (1) moves from the heating position to the spout molding position, the locally heated softened portion (1b) of the inclined opening edge (1a) may hang down by its own weight. The molding member (4) does not normally come into contact with the softened portion (1b) that hangs down in this way, and as a result, the molded spout (1c) has a defective shape. It may disappear.

Therefore, in order to prevent the softened portion (1b) of the glass container (1) that is locally heated from hanging down, the glass container (1) is held laterally or obliquely and partially heated. Has been done. However, in this case, there is a problem that the mechanism for holding the glass container (1) sideways or obliquely and conveying it by a turntable or the like becomes complicated, and the manufacturing equipment cost increases.

[0006]

The method of the present invention is a method of forming a spout at the upper opening edge of a glass container having an inwardly sloping opening edge in the upper part thereof, the method of forming a spout at the opening edge. The part is heated and softened, the heated and softened part is raised from the inside of the glass container to be preformed, and then the pour spout is finally formed.

Further, the device of the present invention is a device for forming a spout at an upper opening edge of a glass container having an inwardly sloping opening edge in the upper part thereof, and a spout forming portion of the upper opening edge of the glass container. A means for heating and softening, a preforming device for preforming by raising the heating and softening part from the inside of the glass container, and a spout forming device for main forming the preforming part to form a spout. is there.

[0008]

[Function] When the spout molding portion at the opening edge of the glass container is heated and softened and the heat softened portion is raised from the inside of the glass container and preformed, the heat softened portion may sag during the spout molding process. And the molding process of the spout is performed well.

[0009]

Embodiments of the present invention will be described below with reference to FIGS. This example is applied to the glass container (1) of FIG.

The spout preforming apparatus (10) of the embodiment shown in FIG. 1 is installed in a part of the glass container spout forming turntable (8) shown in FIG. The outline of the table (8) will be described. As shown in the schematic plan view of FIG. 4, the turntable (8) has, for example, eight heads (9) ... At equal intervals in the peripheral portion, and each head (9) ... is in the first to eighth positions. It is sent to the order in P ₁ ~P _8. When the head (9) moves to the first position P ₁ ,
A glass container (1) is supplied from the outside, and Head (9) is localized heating of the opening edge of the glass container (1) (1a) is slowly performed while in the second to fifth position P ₃ to P _5. At the 6th position P ₆ , the pouring spout is prepared. The forming device (10) is arranged, and the spout forming device (30) is located at the next seventh position P _7. Are placed. The final 8th position P ₈ is a glass container with a spout It is an unloading position where the container (1) is taken out from the turntable (8).

The spout preforming device (10) shown in FIG. 1 will be described. This is the 6th position P _{6 on the} turntable (8)
A support frame (5) fixedly mounted on the A drive mechanism (7) and a preforming member (6) movably supported by the drive mechanism (7) are provided. The preforming member (6) is, for example, a columnar main body (6a) on which a substantially triangular preforming plate (6b) is provided so as to project, and the drive mechanism (7) uses the driving mechanism (7) at the positions A and B shown in FIG. A glass container (1) which has been moved to C and D in order and carried into the sixth position P _6.
of The opening edge (1a) is preformed. Glass container (1)
Locally heated softening part (1b) of opening edge (1a) of
Is the radially outer part of the turntable (8). The preforming member (6) moves up and down inside and outside the glass container (1), and the preforming plate (6b) is directed toward the softened portion (1b) of the glass container (1), and is moved back and forth in that direction. The softened part (1b) is preformed as described below.

The support frame (5) has, for example, a horizontal support plate (11) and a vertical support plate (12) on its upper part. The horizontal support plate (11) is installed on the support frame (5) so as to be slidable in the X direction of the turntable (8) in the radial direction, and the movement is performed by manually operating the handle (13). A vertical support plate (12) is erected and fixed on a horizontal support plate (11), and an elevating plate (19) that moves up and down by manual operation of a handle (14) is attached to the upper part of the vertical support plate (12).

The drive mechanism (7) has a vertical cylinder (15) for vertically moving the preforming member (6) and a horizontal cylinder (17) for moving the preforming member (6) back and forth in the X direction. The upper end of the vertical cylinder (15) is supported by the lift plate (19) by the pivot (20), and the vertical cylinder (15) is suspended and supported by the pivot (20) so that the pendulum can move in the X direction. It Rod (16) extending downward from the vertical cylinder (15)
The preformed member (6) is fixed to the lower end of the. The horizontal cylinder (17) is fixed in the X direction on the horizontal support plate (11),
The tip of the rod (18) is connected to the lower part of the vertical cylinder (15). When the rod (18) of the horizontal cylinder (17) is moved back and forth, the vertical cylinder (15) makes a pendulum motion with the pivot (20) as a fulcrum and moves the preforming member (6) back and forth in an arc in the X direction. Let

Next, the spout preforming operation of the glass container by the spout preforming device (10) will be described. As shown in FIG. 1, when the preforming member (6) is in the standby position A,
A glass container (1) that is locally heated is carried directly below. Then, the vertical cylinder (15) first operates to lower the rod (16) and lower the preforming member (6) to the position B shown by the chain line in FIG. Then the horizontal cylinder (1
7) actuates to move the rod (18) forward, swing the vertical cylinder (15) forward in the X direction, and move the preforming member (6).
2 to the forward position C indicated by the solid line in FIG. The preforming plate (6b) of the preforming member (6) at the forward position C
Touches or comes very close to the locally heated softened portion (1b) of the opening edge (1a) of the glass container (1) from the inside. In this case, the preformed plate (6) of the preformed member (6)
Since b) approaches the inside of the softened portion (1b) by performing a circular arc motion in a slightly upward direction, even if the inclined softened portion (1b) hangs down a little, it is preformed so as to correct this sagging. The plate (6b) moves smoothly inside the softened portion (1b). Next, the rod (16) is retracted by the vertical cylinder (15) to raise the preforming member (6) from the forward movement position C to the position D just above, as shown in FIG. At the time of this rise, the tip of the preforming plate (6b) raises the softened portion (1b) of the glass container (1) to preform the softened portion (1b) substantially flush with the side wall of the glass container (1). The preformed member (6) which has been preformed is
Position D when the rod (18) of the horizontal cylinder (17) retreats
Is returned to the original standby position A.

FIG. 3 is a view for explaining a modified example of the preforming member (6), which is a preforming member (6) having a rectangular preforming plate (6c) projecting from the side surface of the main body (6a). .. In this case, the preforming member (6) is moved from the standby position A to B-C.
-Move downward, forward, backward, and ascend in the order B-A.
In other words, descending from the standby position A in FIG. 3A to the position B,
When advanced to the advance position C shown in FIG. 3B, the vertical tip surface of the preforming plate (6c) presses the softened portion (1b) of the opening edge (1a) of the glass container (1) from the inside. Raised and preformed so that the softened portion (1b) is along the side wall of the glass container (1). Preformed preformed member (6)
Moves from the forward position C to the position B and rises to the standby position A. Such movement of the preformed member (6) can be easily performed only by changing the operation order of the cylinders (15) and (16) in FIG.

In the spout preforming device (10) of FIG. 1, when the glass container (1) is switched to a product having a different height or diameter, the handles (13) (14) of the support frame (5) are changed. ) May be manually operated to adjust the standby position A of the preforming member (6) according to the changed glass container.

As described above, the glass container (1) preformed at the sixth position P ₆ is It is sent to the 7-position P ₇ and the spout (1c) is molded. The pour spout molding device (30) at the seventh position P ₇ is, for example, as shown in FIG.
Forming roller (31) as shown in Fig.
A drive mechanism (32) for moving back and forth in the X direction is provided. When the preformed glass container (1) is carried into the seventh position P ₇ , the forming roller (31) descends inside the opening edge (1a) of the glass container (1) and moves forward in the X direction as it is. The preformed softened portion (1) of the opening edge (1a).
b) is extruded to the outside to form a spout (1c) as shown in FIG. By changing the advancing angle and the advancing direction of the forming roller (31) in the X direction by the drive mechanism (32), the forming angle θ of the spout (1c) is adjusted. In such molding of the spout (1c), the softening portion (1b), which is a spout molding processing portion of the glass container (1), is formed into the spout (1).
Since the step c) is performed after preforming so that the forming process is easy, it can always be performed well.

[0018]

EFFECTS OF THE INVENTION According to the present invention, the portion of the opening edge of the glass container where the spout is formed is locally softened by heating and the heat-softened portion is raised from the inside of the glass container for preforming, so that the softened portion is poured. The mouth does not hang down during the main forming process, and the spout can always be favorably formed on the inclined opening edge of the glass container, which has the effect of improving the yield and quality of the glass container production.

[Brief description of drawings]

FIG. 1 is a side view including a partial cross section showing an embodiment of a device of the present invention.

FIG. 2 is an enlarged side view of a main part of the apparatus shown in FIG. 1 during each operation, in which (a) is a diagram before preforming and (b) is a diagram after preforming.

3A and 3B are side views showing a modified example of the preforming member of the apparatus shown in FIG. 1, where FIG. 3A is a view before preforming and FIG. 3B is a view after preforming.

FIG. 4 is a plan view schematically showing a turntable on which the apparatus shown in FIG. 1 is installed.

FIG. 5 is a side view showing an outline of an apparatus for forming a spout on a glass container, (a) is a drawing before molding, and (b) is a drawing after molding.

FIG. 6 is a side view when the glass container is locally heated.

FIG. 7 is a side view when molding a spout into a glass container.

[Explanation of symbols]

 1 Glass Container 1a Opening Edge 1b Softened Part 1c Spout 6 Preforming Member 10 Spout Preforming Device 30 Spout Forming Device

Claims (2)

[Claims] 1. A method of forming a spout at an upper opening edge of a glass container having an inwardly inclined opening edge at the upper portion thereof, wherein the spout forming portion of the opening edge is heated and softened, and the heating and softening portion is formed. A method for forming a spout of a glass container, which comprises raising the above from the inside of the glass container and preforming the spout, and then performing the main forming of the spout. 2. An apparatus for forming a spout at an upper opening edge of a glass container having an inwardly inclined opening edge at the upper portion, and means for heating and softening a spout forming portion of the upper opening edge of the glass container. A glass container characterized by comprising a preforming device for preforming by heating the softened part from the inside of the glass container and a spout forming device for main forming the preformed part to form a spout. Spout molding equipment.