JP3689133B2 - Stemware molding method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a method for molding glass stemware, and more particularly to a method for molding stemware in which the joint between a die and a plunger formed on the lower surface of a stem base portion is inconspicuous.
[0002]
[Prior art]
In order to form the stem 101 (leg part) and the base part 102 of the stemware 100 made of glass as shown in FIG. 6 by an automatic molding machine, a trapezoid 11 (leg mold 14 as shown in FIG. 3) is conventionally used. May be integrated with the trapezoid 11), a mold comprising a mold 12 and a plunger 13, and the molten glass supplied to the mold 11 is press-molded by the mold 12 and the plunger 13. The way to do is taken. However, since a clearance for performing relative movement is required between the molds, the pressed glass slightly protrudes from the seam portion of these molds, or the seam line is sticky. Is unavoidably formed near the outer periphery of the back surface of the base portion 102.
[0003]
In particular, the clearance between the mold 12 and the plunger 13 is a mold that slides relative to each other, and since it is necessary to provide a certain clearance for molding, a protrusion S1 as shown in FIG. 5A is formed. If the plunger 12 is pushed too far due to a slight variation in the glass weight, a stepped seam S2 as shown in FIG. 5 (b) is clearly unavoidably formed. However, there was a problem, and there was a need to improve it so that it was not noticeable.
[0004]
Therefore, conventionally, after the molded stem part is taken out from the molding machine, the back surface of the stem part is held upward and rotated while applying a frame to the seam part to melt the surface, thereby performing post-processing to achieve a smooth finish. It was common. However, this method requires a large facility to hold the product after the molding process and to convey it while rotating it, and to apply a frame to the product. There are many problems, such as a large amount of heat (combustion gas) required to make the joints in a smooth state, and the base part deformed due to excessive heat treatment, resulting in deterioration of the quality such as the backlash. It was.
[0005]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems and to provide a method for forming a stemware that does not require post-processing equipment for eliminating the defects of the stem base joint.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is such that a stem is held in a trapezoid immediately after a molten glass is press-molded by a molding die comprising a trapezoid, a die and a plunger, and the stem is molded. In this state, it is characterized by rotating and applying a plurality of pen silverner frames arranged on the same circumference to the position of the joint between the mold and the plunger, and polishing the frame angle. Is characterized in that a pen silverener is attached so that the lower end is 3 ° to 10 ° with respect to the vertical axis.
[0007]
The pen silverner was attached so that the frame angle was 3 ° -10 ° outward with respect to the vertical axis. For products with a slightly different seam diameter, only the height of the device was adjusted. This is because the burner holder and the pen silverner can be shared, but also to prevent the burner holder and the pen silverner from being damaged due to the rise in the heat of the frame along with the rotation of the burner. This is to absorb a slight variation in the thin frame so that the frame hits the entire circumference of the joint evenly.
[0008]
[Action]
According to the method for molding stemware of the present invention, a frame is applied while a protruding or stepped seam line inevitably generated at the joint between the eye mold and the primer is held in the trapezoid at a high temperature immediately after molding. As a result, it is possible to manufacture high-quality stemware that is inconspicuous while reducing the number of processes and fuel consumption.
[0009]
The pen silverner is mounted so that the lower end is 3 ° to 10 ° outward with respect to the vertical axis, so in the case of a stem with a slightly different seam diameter between the die and the plunger, a device (burner) By adjusting the height of the burner, it can be shared without replacing the burner holder, etc., and the rising heat can be avoided from being reflected directly to the burner holder or burner, so there is less damage to the burner holder and maintenance of the equipment The cost can be reduced.
[0010]
In addition, according to the present invention, the burner is applied to the stem while being held by the trapezoid while being rotated, so that the entire stem is reheated to obtain a uniform temperature distribution, and the precisely processed trapezoid surface. It is cooled in a state of being in close contact with the base plate, so that it is possible to prevent the occurrence of defects due to the backlash of the base part caused by deformation due to thermal contraction in the cooling process until it is taken out from the base mold.
[0011]
【Example】
In the following, the present invention will be described in detail with reference to illustrated embodiments.
In a known glass product automatic press molding machine in which a plurality of trapezoids 11 are mounted at regular intervals on a table that rotates intermittently (not shown), a predetermined weight of molten glass is charged at a predetermined position and indexed to the next position. As shown in FIG. 4, the press molding method of the stem in which the mold 12 and the plunger 13 are lowered and molded in the configuration as shown in FIG. 3, the base mold 11, the mold 12 and the mold are shown. It is inevitable that the seam of the mold is formed on the 12 and the plunger 13 and the seam is formed on the molded glass product.
[0012]
The joint between the trapezoid 11 and the mold 12 is simply a joint between the molds and can be made extremely fine by processing and maintenance of each mold. Since the molds slide relative to each other, a certain clearance is required, and a protrusion S1 as shown in FIG. 5 (a) occurs in the clearance, or a clear seam line appears even if there is no protrusion. Further, the plunger tends to push in due to the light variation of the molten glass put into the trapezoid 11 and the large variation of the trapezoid 11 capacity, and a stepped seam line S2 as shown in FIG. 5B is generated. To do.
[0013]
FIG. 1 shows an outline of a stem forming method of the present invention, that is, a method in which a seam line S of a mold 12 and a plunger 13 is applied to a frame while rotating a pen silverner 21 attached to a burner holder 22 to smoothly finish a seam. FIG. 2 shows an example of the device of the present invention. The structure of the apparatus is attached to an inner wall of a rotary joint 28 fixed by a fixing mechanism (not shown) so that a rotating shaft 27 connected by a burner shaft 23 and a joint 26 rotates via a bearing B3. A gas supply port for supplying combustion gas is connected to the upper side wall of the rotary joint 28, and a hollow arrow is connected to a gas chamber 22 a provided inside the burner holder 22 via the hollow rotary shaft 27 and the burner shaft 23. It is comprised so that combustion gas may be supplied as shown by. And 4-8 pen silverners 21 are attached to the lower end surface of the burner holder 22 so that the lower end is 3 ° to 10 ° outward with respect to the vertical axis. The structure of the rotary joint 28 for supplying the combustion gas at the upper end of the apparatus to keep it airtight is a known mechanism and will not be described.
[0014]
The rotation of the burner shaft 23 is configured to rotate via gears 25 and 24 by a motor M fixed to the mechanical support 30 and capable of controlling the number of rotations. The burner shaft 23 is bolted to a holding frame of the motor M. It is configured to be able to be rotated by bearings B1 and B2 by a support 25 fixed and connected by the bearings B1 and B2. The entire apparatus other than the motor M is configured such that the installation height can be adjusted vertically by bolts 31 and 32 in the vertical direction.
[0015]
Next, the outline of the situation of use of the apparatus of the present invention will be described. The known press molding method described above in a known glass product automatic press molding machine in which a plurality of trapezoids 11 are mounted at regular intervals on a table that rotates intermittently. By rotating the device of the present invention installed so as to be coaxial with the stem when the molded stem portion 102 is indexed from the press position to the next position, the seam line S is made smooth and inconspicuous by the frame. To do.
[0016]
In general, a table type known automatic glass product press forming machine that rotates intermittently has a table intermittent rotation stoppage time of about 1 to 3 seconds, depending on the shape of the product. And let the frame hit the seam line. In consideration of frame blur or the like, about 2 to 3 rotations are optimal.
[0017]
The installation position of the apparatus of the present invention is preferably a position immediately after the press position, but the position may be set as appropriate depending on the conditions of the molding machine and incidental equipment. Needless to say, two to three units may be installed according to the finished state of the seam line S of the stem base 102.
[0018]
In the above-described embodiment of the apparatus of the present invention, the burner 21 is configured to rotate. However, the combustion gas is directly supplied to the gas chamber 22a of the burner holder 22 by means such as a flexible hose. Alternatively, the mechanism may be such that the burner 21 swings at an appropriately set angle in the range of 30 to 180 °.
[0019]
【The invention's effect】
As described above, the method for molding stemware according to the present invention includes a frame in a high-temperature state immediately after molding in which a seam line that appears unavoidably by press molding and a seam line that appears at the joint of a plunger is held in a trapezoid. Since it is a smoother method , there is no need for large-scale processing steps and equipment after removal from the mold, and because it can be processed with a small amount of combustion gas, the number of steps and fuel consumption can be greatly reduced. Since the burner is attached with a taper, it can be used for products with different life spans and products with different seam diameters. Therefore, the present invention greatly contributes to the industry as a method for forming a stemware that solves the conventional problems.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing an embodiment of the present invention.
FIG. 2 is a partial cross-sectional view showing an apparatus according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of a mold showing a method for forming a stem portion of stemware.
4 is an enlarged view of a part A in FIG. 3;
FIG. 5 is a cross-sectional view of a molded stem end.
FIG. 6 is a perspective view showing an example of glass stemware.
[Explanation of symbols]
100 Stem Wear 102 Base S Seam Line S1 Projection S2 Stepped Seam 11 Trapezoid 12 Joint Die 13 Plunger 21 Pen Silverer 22 Burner Holder 22a Gas Chamber 23 Burner Shaft 24a, 24b Gear 25 Support 26 Joint 27 Rotating Shaft 28 Rotary Joint 29 Gas supply port 30 Machine support M Motor

Claims (2)

The joint between the eye mold and the plunger remains in the state that the stem is held in the base mold immediately after the molten glass is press-molded by the mold comprising the trapezoid, the eye mold and the plunger and the stem is molded. A method for forming a stemware, comprising: polishing by rotating a plurality of pen silverner frames arranged on the same circumference at a position of 2. The stemware molding method according to claim 1, wherein a pen silverener is attached such that the angle of the frame is 3 ° to 10 ° in the outer direction with respect to the vertical axis .

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