JP3824834B2 - Gob delivery equipment for glassware manufacturing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bowl-shaped gob delivery device for feeding a glass gob supplied from a feeder to a molding machine in a manufacturing process of a glass product such as a glass bottle.
[0002]
[Prior art]
This type of gob delivery device uses a machined metal material (generally an iron casting) in a bowl shape. However, as it is, the slipping of the gob is poor, and there is a problem that a molding machine trouble occurs due to a delay in the arrival time of the gob. Therefore, it is common to coat the inner surface with carbon.
[0003]
[Problems to be solved by the invention]
In the above conventional gob delivery device, since the inner surface is coated with carbon, when the gob passes through the device, carbon foreign matter may be transferred to the gob surface. Thereby, a carbon foreign material will mix in a glass product. In particular, in the case of glass bottles, in recent years, there has been a demand for weight reduction to reduce the wall thickness of the bottle. However, in such a weight reduction bottle, strength deterioration due to contamination by foreign matters is a problem that cannot be ignored.
[0004]
In addition, the conventional gob delivery device has a thin coating on the inner surface of the metal body, so the thermal conductivity is large, and a relatively large amount of heat is lost when the gob passes through the device, compared to the gob. Large temperature unevenness occurred. When a glass product is molded with such a gob, the elongation of the glass is not uniform due to temperature unevenness, resulting in poor thickness distribution. Particularly in the case of glass bottles that have been reduced in weight, deterioration in strength due to poor thickness distribution is a problem that cannot be ignored.
[0005]
It is an object of the present invention to prevent foreign matters from being transferred to the gob when the gob passes through the delivery device, to reduce the temperature drop of the gob, and to improve the quality of the glass product.
[0006]
[Means for Solving the Problems]
The present invention is a gob delivery device characterized in that the inner surface of the bowl-shaped main body is covered with a Teflon resin block in the bowl-shaped gob delivery device for manufacturing glass products.
[0007]
Teflon resin is extremely sticky and slippery, so the resistance when the gob passes is extremely low, the delay of the gob supplied to the molding machine can be minimized, and the heat of the gob when contacting the gob Since it sublimates, it does not transfer to the gob as a foreign object. In addition, since Teflon resin has a lower thermal conductivity than carbon and has a thick block, it is possible to reduce the temperature drop when the gob passes through the delivery device. Therefore, it is possible to prevent a thickness distribution failure when molding a glass product. Although there is no restriction | limiting in particular in the thickness of a Teflon resin block, It is practical to set it as about 5-20 mm. As the Teflon resin, tetrafluoroethylene (polytetrafluoroethylene) or the like can be used.
[0008]
The Teflon resin block sublimates due to the heat generated when the gob passes and gradually becomes thinner, but the degree of thinness varies depending on the location. If the Teflon resin block is divided into a plurality of continuous blocks in the length direction of the main body, it is economical because only the thinned block needs to be replaced, and it is not necessary to replace the entire block.
[0009]
The Teflon resin block can be easily fixed to the main body by making it into a bowl shape adapted to the inner surface shape of the main body and fixing it with a fixing piece attached to the main body.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings relating to the embodiments. FIG. 1 is a schematic view of the glass gob G supplied from the feeder 1 reaching the molding machine 7, FIG. 2 is a side view of the trough 5 of the embodiment, FIG. 3 is a sectional view taken along line AA in FIG. FIG. 5 is a sectional view taken along the line BB in FIG.
[0011]
The molten glass discharged from the feeder 1 is cut by a cutter 2 to become a gob G, and while being dropped by gravity, it is guided to a cylindrical guide 3, a bowl-shaped scoop 4, a trough 5, and a deflector 6, and is sent to a molding machine 7. Supplied. The scoop 4 rotates in the horizontal direction to feed the gob G into a plurality of sections of the molding machine 7. Therefore, the trough 5 and the deflector 6 are provided by the number of sections. In this embodiment, the trough 5 and the deflector 6 are the gob delivery device in the present invention.
[0012]
As shown in FIGS. 2 and 3, the trough 5 is formed by covering the inner surface of a main body 8 made of metal in a bowl shape with a bowl-like Teflon resin block 9. The Teflon resin block 9 is divided into three blocks continuous in the length direction of the main body 8. Reference numeral 9a in FIG. 2 indicates a divided part of the block. Adjustment plates 10 are fixed to the tops on both sides of the main body 8 by welding. Six bolt holes are provided on the upper side of each adjustment plate 10, and a fixing piece 11 is fixed with bolts 12. The fixing piece 11 is fixed by pressing the Teflon resin block 9 against the main body. That is, the three Teflon resin blocks 9 are fixed to the main body 8 by two fixing pieces 11 on one side (four on both sides) mounted on the upper portion of the main body 8 via the adjusting plate 10. A gap 18 is formed between the adjustment plate 10 and the Teflon resin block 9 so that expansion deformation due to heat of the block 9 can be absorbed.
[0013]
As shown in FIGS. 4 and 5, the deflector 6 is obtained by coating the inner surface of a main body 13 formed in a bowl shape bent with a metal with a bowl-shaped Teflon resin block 14. The Teflon resin block 14 is divided into three blocks continuous in the length direction of the main body 13. The code | symbol 14a in FIG. 4 has shown the divided | segmented part of the block. Adjustment plates 15 are fixed to the tops on both sides of the main body 13 by welding. Six bolt holes are provided at the top of each adjustment plate 15, and a fixing piece 16 is fixed by a bolt 17. The fixing piece 16 fixes the Teflon resin block 14 to the main body. That is, the three Teflon resin blocks 9 are fixed to the main body 13 by two fixing pieces 16 on one side (four on both sides) mounted on the upper portion of the main body 13 through the adjustment plate 15. A gap 19 is formed between the adjustment plate 15 and the Teflon resin block 14 so that expansion deformation due to heat of the block 14 can be absorbed.
[0014]
It is not always necessary to cover the Teflon resin block over the entire length of the main body, and only the portion with which the gob G contacts. That is, when the gob G does not contact the end portion of the trough or the deflector, the covering of that portion can be omitted.
[0015]
In fixing the Teflon resin block, the adjustment plate is not always necessary and can be omitted. It is also possible to integrally form the main body and the adjustment plate.
[0016]
【The invention's effect】
In the gob delivery device of the present invention, the inner surface of the main body is covered with a block of Teflon resin, so the resistance when the gob passes is extremely small, the delay of the gob supplied to the molding machine can be minimized, and the covering Therefore, the quality of the glass product to be molded can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic view from when a glass gob G supplied from a feeder 1 reaches a molding machine 7;
FIG. 2 is a side view of the trough 5 of the embodiment.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a side view of the deflector 6 of the embodiment.
5 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Feeder 2 Cutter 3 Guide 4 Scoop 5 Trough 6 Deflector 7 Molding machine 8 Main body 9 Teflon resin block 10 Adjustment plate 11 Fixing piece 12 Bolt 13 Main body 14 Teflon resin block 15 Adjustment plate 16 Fixing piece 17 Bolt 18 Gap 19 Gap G Gob

Claims (4)

A gob delivery device for glass product manufacturing, characterized in that the inner surface of the bowl-shaped main body is covered with a Teflon resin block. 2. The gob delivery device according to claim 1, wherein the Teflon resin block is divided into a plurality of blocks continuous in the longitudinal direction of the main body. 3. The gob delivery device according to claim 1 or 2, wherein the Teflon resin block is formed in a bowl shape. 4. The gob delivery device according to claim 3, wherein the Teflon resin block is fixed to the main body by a fixing piece attached to the main body.

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