JP2001294430A - Deflector for supplying gob - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deflector for supplying gobs which is capable of correctly dropping the gobs to the center of a blank mold by perpendicularly correcting the postures of the gobs without using funnels. SOLUTION: A deflector guide 6 is mounted at a front end 4 of a main body 1 of a deflector and a straight gob dropping passage 12 of a sectionally circular shape or approximately elliptic shape is formed between this guide and an inside surface 5 of a recessed shape of the main body 1. A diameter- expanding part 13 of an inverted circular cone shape is preferably formed at the top end of the deflector guide 6 and the radius of curvature of the horizontal section of the deflector guide 6 is preferably formed to the radius of curvature of the main body 1 of the deflector or above. The gobs are corrected to the perpendicular posture while passing the gob dropping passage 12 and are supplied to the center of the blank mold B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflector for supplying a gob to a glass forming machine, and more particularly to a deflector for an independent section type glass forming machine called an IS machine. The present invention relates to a gob supply deflector suitable for supplying a deflector.

[0002]

2. Description of the Related Art An automatic glass forming machine receives a gob (molten glass lump) made by an overhead glass feeder into a rough mold through a metal gutter called a scoop, a tree, and a deflector. In a well-known independent section type glass forming machine, since a number of sections are arranged in a line, the tows are arranged obliquely according to the distance between the scoop and each section, and the deflector projects from the lower end of the inclined tow. In order to drop the gob vertically into the center of each section, it must be curved in a vertical plane.

FIG. 3 is a view showing such a conventional deflector for supplying a gob, in which a deflector 20 having a circular horizontal cross section is shown. The gob jumps obliquely from the upper end of the deflector 20 as shown by the arrow, and while being pressed against the inner surface of the deflector 20 by centrifugal force, the posture is corrected vertically, and then the gob falls right below the center of the rough mold B. However, since the deflector 20 is open on one side, there is a tendency that the gob inclines slightly due to the centrifugal force at the moment of leaving the deflector 20. Even if this slope is negligible,
It causes various product defects.

Therefore, conventionally, a gob guide called a funnel 22 has been provided above the rough mold B to correct the gob posture vertically. The funnel 22 includes a short normal funnel and a long funnel as shown in FIG. 3. However, since the normal funnel cannot completely correct the posture of the gob, oil is frequently applied to the inner surface of the rough mold B. You need to go and reduce the friction. On the other hand, the long funnel as shown can correct the inclination of the gob, but after the gob is thrown in, it must be moved laterally from above the rough mold B by the funnel rocking mechanism 23 prior to the parison molding. However, the parison molding timing is delayed by that time, and a defect called "Hakama" tends to occur. Further, since the large long funnel is swung above the rough mold B, there is also a problem that the danger to the operator increases.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and corrects the position of the gob vertically so that the gob can be properly dropped on the center of the rough mold. The purpose of the present invention is to provide a deflector for supplying a gob that can eliminate the timing delay of the parison molding and the danger to workers.

[0006]

According to the present invention, there is provided a deflector for supplying a gob to solve the above-mentioned problems. The deflector for introducing a gob into a rough mold of a glass forming machine is provided with a deflector body at a tip end thereof. And a deflector guide forming a straight gob drop passage having a circular or substantially elliptical cross section between the inner surface and the concave inner surface. In addition, it is preferable to form an inverted conical large diameter portion at the upper end of the deflector guide, and it is preferable that the radius of curvature of the horizontal cross section of the deflector guide be equal to or larger than the radius of curvature of the main body of the deflector.

According to the present invention, a straight gob drop passage is formed between the deflector body and the concave inner surface of the deflector body by the deflector guide attached to the tip end of the deflector body, and the attitude of the gob is completely corrected. It is possible to introduce a gob into a rough mold. For this reason, the conventional funnel is not required, and the parison molding can be started immediately after the gob is put in. Further, since there is no need to swing the funnel, there is no danger to the operator.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. 1 and 2 show an embodiment of the present invention. Reference numeral 1 denotes a main body of a deflector for introducing a gob into a rough mold B of a glass forming machine. This body 1 has a straight tip 4 below an upper part 3 which is curved in a vertical plane as in the prior art.
Are made continuous. The horizontal cross section is substantially semicircular as shown in FIG. 2, and the inner surface with which the gob contacts is a concave inner surface 5.

In the present invention, a deflector guide 6 is attached to the tip 4. In this embodiment, a deflector guide 6 is attached to a frame 7 fixed to the main body 1 by bolts 8.
The bolt 8 penetrates a screwless hole 9 of the frame 7 and has nuts 10 on both sides thereof.
10 is fixed. For this reason, nuts 10, 1
0, the deflector guide 6 is moved to the main body 1.
Can be moved closer to or away from the tip 4 of the camera.

As shown in FIG. 2, the deflector guide 6 has a concave inner surface 11 which is curved on the opposite side to the concave inner surface 5 of the deflector body 1, and has a circular or substantially elliptical cross section between itself and the concave inner surface 5. A straight gob drop passage 12 is formed. In order to prevent the deflector guide 6 from scratching the gob, the radius of curvature r ₂ in the horizontal section of the concave inner surface 11 of the deflector guide 6 is changed to the radius of curvature r in the horizontal section of the concave inner surface 5 of the main body 1 as shown in the figure. It is preferable to set it to ₁ or more. In addition, it is preferable to form an inverted conical enlarged portion 13 at the upper end of the deflector guide 6 as shown in FIG. 1 so that the gob can be smoothly guided to the gob falling passage 12. The concave inner surface 1 of the deflector guide 6
1 is also subjected to a low friction treatment similarly to the concave inner surface 5 of the main body 1 of the deflector.

The gob supplying deflector of the present invention thus constructed is used by adjusting the position so that the center line of the gob drop passage 12 coincides with the center line of the rough mold B of the glass forming machine as in the prior art. It is something that can be done. At the curved upper portion 3 of the main body 1 of the deflector, the gob falls while changing its direction downward, but at this time, it is inevitable that the gob is inclined due to centrifugal force. However, in the deflector for supplying a gob according to the present invention, the deflector guide 6 is attached to the distal end portion 4 of the main body 1 of the deflector to form a straight gob drop passage 12 having a circular or substantially elliptical cross section. As a result, a complete vertical posture is established, and the object falls to the center of the rough mold B.

As described above, according to the present invention, the gob can be supplied to the center of the rough mold B without using the conventional long funnel, so that the parison molding can be started immediately after the gob-in. Defects due to delay in molding timing can be prevented, and molding speed can be increased. Furthermore, since there is no need to swing the large long funnel above the rough mold B, the danger to the operator is reduced. In addition, since the gob falls to the center of the rough mold B in a vertical posture, it is not necessary to frequently apply oil to the rough mold B as in the related art, so that the burden on the worker is reduced and wrinkles, chilled, hakama, Product defects such as uneven thickness can be eliminated. Further, a funnel swinging mechanism is not required, which contributes to cost reduction of the glass forming machine.

[0013]

As described above, according to the present invention, it is possible to correct the position of the gob vertically so that the gob can be properly dropped to the center of the rough mold, and the timing of the parison molding such as when a long funnel is used can be reduced. There is an advantage that danger to workers can be eliminated. Although the present invention is particularly suitable for an independent section type glass forming machine, it goes without saying that the present invention can be applied to other glass forming machines.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an AA cut portion.

FIG. 3 is a partial sectional view showing a conventional example.

[Explanation of symbols]

 B Rough mold 1 Deflector main body 3 Upper part 4 Tip part 5 Concave inner surface 6 Deflector guide 7 Frame 8 Bolt 9 Screwless hole 10 Nut 11 Concave inner surface 12 Gob drop passage 13 Inverted conical enlarged part 20 Conventional deflector 22 Funnel 23 swing mechanism

Claims (3)

[Claims] 1. A straight gob drop passage having a circular or substantially elliptical cross section is formed at the tip of a main body of a deflector for introducing a gob into a rough mold of a glass forming machine between the deflector and a concave inner surface of the main body. A deflector for supplying a gob, which is provided with a deflector guide. 2. The gob supplying deflector according to claim 1, wherein an inverted conical-diameter enlarged portion is formed at an upper end of the deflector guide. 3. The gob supplying deflector according to claim 1, wherein the radius of curvature of the horizontal cross section of the deflector guide is equal to or larger than the radius of curvature of the main body of the deflector.