JP2590134Y2 - Hood device and hot coating device using the same - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood device and a hot coating device using the same, and more particularly, covers a mouth of a glass bottle flowing through a hot coating line.
The present invention relates to a hood that has a hood for protecting the mouth from hot coating processing on the body of a glass bottle, and cools the atmosphere around the mouth through the hood, and a hot coating apparatus using the hood.

[0002]

2. Description of the Related Art In recent years, glass bottles have been subjected to a surface treatment for forming a metal oxide film or an organic film on the surface of the glass bottle in order to strengthen the glass bottle and prevent the glass bottle from being damaged. This surface treatment is roughly classified into so-called hot coating performed during the period from bottle production to slow cooling and cold coating performed after slow cooling.

[0003] Hot coating and cold coating are performed repeatedly to sufficiently strengthen the glass bottle. This is dual coating.

[0004] In the case of hot coating, it is usually noted that the coating does not reach the mouth of the glass bottle, except in the case where an aluminum foil is adhered to the mouth of the glass bottle to seal it.

[0005] When the hot coating reaches the mouth of the glass bottle, the metal oxide film and the cap that covers the mouth of the glass bottle cause electrochemical corrosion due to the relationship between the noble metal and the base metal. This is because there are times.

The top surface of the mouth of the glass bottle is required to have close contact with a seal sheet made of a resin such as cork or polyethylene provided on the inner surface of a cap provided on the mouth.
This is particularly required for sealing when the contents are those that generate gas pressure such as carbonated beverages and fermented beverages.

The adhesion between the top surface of the mouth of the glass bottle and the seal sheet of the cap is ensured by so-called baking, in which the top surface is softened by heating and straightened.

[0008] By the way, when hot coating reaches the mouth of a glass bottle, the so-called whitening phenomenon in which even a metal oxide film having very small spots turns into a gray or white color due to heating during the above-mentioned baking. This is conspicuous, and can be easily determined by visual inspection or the like.

Heretofore, a hood device has been used in order to prevent the glass bottle from becoming defective by hot coating and to improve the yield.

As shown in FIG. 8, this hood device has a pair of left and right hoods c, c covering the mouth b of the glass bottle a flowing through the hot coating line from both sides. These hoods c, c are formed by hook-shaped hollow walls in cross section,
The mouth b is protected from hot coating on the body e of the glass bottle a.

The hoods c, c extend slightly downward from their outer surfaces and have a cross section L bent toward the mouth of the glass bottle.
By suppressing the evaporation source gas flow g for hot-coating the glass bottle body e around the mouth of the glass bottle along with the V-shaped skirt wall f, a metal oxide film is formed on the mouth of the glass bottle. Prevent evaporation.

The hoods c and c constitute an air-cooled hood through which air is passed through the hollow wall. Even if a small amount of the vapor source gas flow g wraps around the mouth of the glass bottle, it is deposited as a metal oxide film. This prevents the metal oxide film from being deposited on the mouth of the glass bottle.

[0013]

However, in the above-mentioned conventional apparatus, it is not possible to sufficiently suppress a part of the evaporation source gas flow g from wrapping around the mouth of the glass bottle. The deposition of the metal oxide film on the mouth of the glass bottle by the vapor deposition source gas flow g circling around cannot be sufficiently suppressed. For this reason, the deposition of a metal oxide film with very small spots on the mouth of the glass bottle occurs relatively frequently, which greatly reduces the yield.

Further, white powder adheres to the inner surface of the hood c due to reduction of a part of gas components, and the powder causes clogging of a nozzle for forming a vapor source gas flow.

[0015] For this reason, the hot coating apparatus cannot be used continuously for a long time, and the thickness of the deposited film formed around the body of the glass bottle gradually decreases with time, so that the quality of the glass bottle is affected. I do.

As a result of various experiments conducted by the present inventors, the deposition source gas flow g was as high as about 155 ° C., and the mouth of the glass bottle and the hoods c, c on both sides thereof were observed.
, Causing the ascending gas flow h to pass upward through the gap, causing the deposition source gas to wrap around the mouth of the glass bottle in a relatively large amount. , C between each other and between each and the mouth of the vial hinders the atmosphere around the mouth of the vial from being cooled by the hoods c, c. Since the gas flow h also exerts a thermal effect on the hoods c and c and the mouth of the glass bottle, it has been found that not only the mouth of the glass bottle but also the inner surfaces of the hoods c and c are not sufficiently cooled.

An object of the present invention is to provide a hood and a hot coating apparatus using the hood, which can solve the above-mentioned conventional problems, based on such knowledge.

[0018]

In order to achieve the above object, the hood device of the present invention covers the mouth of a glass bottle flowing through a hot coating line, and this mouth is heated by the hot body against the body of the glass bottle. In a hood device having a hood to protect from a coating process and cooling an atmosphere around the mouth through the hood, a hollow formed with a groove that continuously covers the entire top surface and both sides of the mouth of the glass bottle. A water-cooled hood through which cooling water passes is provided in the wall, and a spoiler is provided at an opening of a groove of the hood to extend near a lower side surface of a mouth portion of the glass bottle.

The spoiler is preferably capable of adjusting the distance from the mouth of the glass bottle.

In order to achieve the above-mentioned object, the hot coating apparatus of the present invention achieves the above object by using a vapor source gas flow formed from one side to the other in the width direction of the glass bottle conveying path. Cover the hot coating line that performs hot coating around the part and the mouth of the glass bottle flowing through this hot coating line,
A hood for protecting the mouth from hot coating on the body of the vial and for cooling the atmosphere around the mouth, wherein the entire top surface and both sides of the mouth of the vial are continuous. A water-cooled hood for passing cooling water is provided in a hollow wall having a groove formed therein, and a spoiler is provided at an opening of the groove of the hood to extend near a lower side surface of a mouth of a glass bottle. And flow rate adjusting means for adjusting the flow rate.

[0021]

According to the above configuration of the hood device of the present invention, the hood receives the mouth of the glass bottle flowing through the hot coating line in the groove, and continuously covers the entire top surface and both sides of the mouth. As a result, a part of the source gas flow in the hot coating line is blocked between the hood and the mouth of the vial to escape upward of the hood, and an ascending gas flow is generated around the mouth of the vial. The spoiler provided at the opening of the groove is provided in a part of the opening of the groove even if a slight updraft occurs and tries to enter between the mouth of the glass bottle and the groove. It is easy to set or replace the mounting position with a thing, and keep the appropriate gap between the mouth and the mouth according to the type of bottle passing and the difference in the thickness of the mouth to prevent the rising gas flow from entering. effective Blocked, it can be prevented from flowing around the mouth of the glass bottle. In addition, the hood is water-cooled, and continuously covers the entire top surface and both sides of the glass bottle mouth to confine the atmosphere around the glass bottle mouth, and is not affected by the inflow or passage of the evaporation source gas. In addition, the atmosphere around the mouth of the glass bottle can be sufficiently cooled.

In this case, the spoiler can adjust the distance between the spout and the mouth of the vial so that the gas flow of the deposition source gas around the mouth of the vial can be controlled for any type of the vial. Can be sufficiently prevented.

Further, according to the above configuration of the hot coating apparatus of the present invention, the flow rate of the vapor source gas flow can be appropriately adjusted by the flow rate adjusting means while having the same operation as the hood apparatus. In addition, the required film thickness according to the type of the metal oxide film to be coated and the type of the metal oxide film to be coated can be guaranteed, and the gas flow rate can be stably obtained without fluctuation of the gas flow rate over time.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a hot coating apparatus to which the present invention is applied will be described below in detail with reference to the drawings.

FIG. 1 is a plan view schematically showing a bottle production line. As shown in the figure, the first conveyor line 1
A bottle forming machine 2 and a hot coating apparatus 3 are provided, and an annealing furnace 5 is provided on a first conveyor line 1 and on a second conveyor line 4 which follows at a right angle thereto.

The forming machine 2 has a number of forming sections, and the glass bottles formed in each section are sent out to the first conveyor line 1 and sequentially sent to the hot coating apparatus 3.

In the hot coating apparatus 3, when a glass bottle still in a high-temperature state immediately after molding passes, a metal oxide film is deposited by blowing a deposition source gas flow 20 as shown in FIGS. In addition, improvement in bottle strength and prevention of scratches can be achieved.

The glass bottles that have passed through the hot coating device 3 are transferred from the first conveyor 1 to the second conveyor 4, where they are sent to the lehr 5.

The glass bottles that have entered the annealing furnace 5 are subjected to a baking process in the first stage, and then are gradually cooled. The glass bottle after the slow cooling is subjected to a cold coating process (not shown), and the bottle making process is completed.

The hot coating apparatus 3 is shown in FIGS.
As shown in FIG. 2, a discharge unit 11 for discharging a deposition source gas is provided on one of both sides of the conveyor line 1, and a suction unit 12 for sucking a deposition source gas is provided on the other side, and the deposition source gas flow 20 is formed. I do.

In order to blow out and suck the deposition source gas, blowers 13 and 14 are connected before and after the ejection unit 11 and the suction unit 12, respectively, and the deposition source gas is circulated through the duct 15 while being circulated. A gas stream 20 is formed.

The chemical in the chemical drum 21 is mixed with pressurized air by a pump 23 in a mixing device 22 at a predetermined ratio and sent to the units 11 and 12.

A hood 32 is provided between the blowing unit 11 and the suction unit 12 so as to be positioned above the glass bottle 31 flowing through the first conveyor line 1 and to cover the mouth 31a of the glass bottle 31 from above. Have been.

The hood 32 is provided with the hot coating device 3
The mouth 31a of the glass bottle 31 flowing through the hot coating line formed by the body 31 of the glass bottle 31
b from the hot coating process.

Specifically, the mouth portion 31a of the glass bottle 31
A water-cooled hood through which cooling water flows as a water passage 32c in a hollow wall 32b formed with a groove 32a continuously covering the entire area of the top surface 31c and both sides. Therefore, the hood 32
Is connected to a cooling water circulation pump 36.

According to the hood 32, the opening 31a of the glass bottle 31 flowing through the hot coating line of the hot coating apparatus 3 is received in the groove 32a, and the entire top surface 31c of the opening 31a and both sides are continuously connected. Will cover.

As a result, a part of the deposition source gas flow 20 in the hot coating apparatus 3 is
Hood 3 passing between 2 and the mouth 31a of the glass bottle 31
2 can be prevented from flowing upward, and the generation of a rising gas flow wrapping around the mouth 31a of the glass bottle 31 can be prevented.

However, since the deposition source gas flow 20 has a high temperature of about 155 ° C. at the maximum, an aggressive rising gas flow flowing upward from the hood 32 is cut off, but a rising gas flow 20a of a degree of natural convection is generated. Part is hood 32 and glass bottle 3
Attempt to enter between the first mouth 31a.

However, this is because the skirt wall is attached to the outer surfaces on both sides of the hood 32 and extends downward, and has an inward flange 33a bent toward the mouth 31a of the glass bottle 31 passing through the groove 32a. 33, which is temporarily obstructed by the flange 33a being as close as possible to the mouth 31a, and the ascending gas flow 20a from the deposition source gas flow 20 enters between the flange 33a and the mouth 31a. It is possible to prevent sneaking around the mouth 31a.

However, the upper end of the skirt wall 33 having the flange 33a is fixed to the outer surface of the hood 32,
It extends to near 1a, and is made of a strong metal in terms of durability, and requires firm support. For this reason, it is not easy to adjust the position, and even if the position of the hood 32 can be adjusted vertically, it is difficult to adjust the position between the flange 33a and the mouth 31a of the glass bottle 31. Also difficult to replace.

Therefore, the positional deviation width of the glass bottle 31 flowing on the first conveyor 1 and the opening 3 of the glass bottle 31
Considering the difference in thickness of 1a, the mouth 3
It is necessary to set the position of the flange 33a so as to have a safe distance without touching or damaging the flange 1a, and a relatively large distance can be formed between the flange 33a and the mouth 31a. Would. In addition, only one step is formed between the glass bottle 31 and the seal portion.

For this reason, it is sometimes impossible to sufficiently prevent the rising gas flow 20a from entering between the hood 32 and the mouth 31a of the glass bottle 31.

Therefore, in this embodiment, the groove 32 of the hood 32
A spoiler 34 is provided at the opening of a to extend near the side of the mouth 31a of the glass bottle 31.

The spoilers 34 are provided in two stages, upper and lower, and the gap between the opening of the groove 32a of the hood 32 and the opening 31a of the glass bottle 31 is formed in a multi-layered structure together with the flange 33a. .

The spoiler 34 is provided with a groove 32 of the hood 32.
The sealing property can be exhibited only by being attached to the opening of a, and a thin and lightweight one can be used. Therefore, setting and replacement of the mounting position are easy, and the position of the mouth 31a of the glass bottle 31 is easy. Mouth 31a depending on the deviation width and bottle type
The distance between the glass bottle 31 and the opening 31a of the glass bottle 31 can be minimized, and the sealing property can be improved remarkably.

In particular, in this embodiment, the lower spoiler 34 is rotatable about the shaft 35, and the rotation allows the gap between the spoiler 34 and the mouth 31a to be adjusted more easily and finely.

Therefore, it is possible to sufficiently prevent the gas of the evaporation source gas flow 20 from entering between the hood 32 and the opening 31a of the glass bottle 31 and circling around the opening 31a.

Further, the hood 32 is a water-cooled type, and continuously covers the entire surface and both sides of the top surface 31c of the mouth portion 31a of the glass bottle 31 so that the atmosphere around the mouth portion 31a of the glass bottle 31 is confined. The atmosphere around the mouth 31a of the glass bottle 31 can be sufficiently cooled without being affected by the inflow and passage of the gas flow, so that the deposition source gas is unlikely to flow around the mouth 31a of the glass bottle 31 and slightly turns around. Even if it does, it prevents a white powder from adhering to the inner surface of the hood 32 due to the formation of a vapor deposition film on the mouth 31a of the glass bottle 31 or the reduction of some of the components of the vapor source gas flow. Can be.

Therefore, the mouth portion 31a of the glass bottle 31
Even if a metal cap is applied to the metal cap, no metal oxide film is formed between the metal cap and the precious metal and the base metal, which causes the conventional electrochemical corrosion caused by this. Nothing.

Further, the glass bottle 31 after the hot coating treatment is subjected to a baking treatment at a slow cooling stage. However, since there is no metal oxide film deposited on the opening 31a of the glass bottle 31, it may be whitened. Nothing happens.

Further, the spouting port and the suction port for forming the vapor source gas flow 20 due to the powder adhering to the inner surface of the hood 32 and the like do not become clogged with time. It is possible to prevent the flow rate of the gas flow 20 from fluctuating and the metal oxide film to be formed from becoming thinner.

In this respect, the quality of the glass bottle 31 treated by the hot coating apparatus 3 of the present embodiment is high, and the yield is remarkably improved. Even if this is continued for a long time, it can be guaranteed.

FIG. 5 is a block diagram of a control circuit for controlling the operation of the bottle-making auxiliary device of the present embodiment, and mainly shows a characteristic control system related to the hot coating process.

The control circuit has a CPU 40. The input of the CPU 40 has a pressure at a suction port of the evaporation source gas flow 20 in a hot coating line formed by the hot coating apparatus 3 and a central portion, that is, a groove of the hood 32. Pressure sensors 41 and 42 for detecting the pressure of the portion just above the opening 31a of the glass bottle 31 in the glass bottle 32a, a temperature sensor 43 for detecting the temperature of the evaporation source gas flow 20, a chemical concentration detection sensor 44, and the like. And other inputs are input, and blowers 13 and 14 as control loads are output from the output unit.
A driver 45 for controlling the driving of the
Mixing device 22 for mixing ratio of chemical solution and air, supply flow rate, etc.
A control signal of the driver 46 for controlling the operation of the driver, a temperature adjustment signal, and other outputs are output.

As a result, the temperature of the deposition source gas stream 20 is set to 9
Required temperature in the normal setting range of about 5 ° C to 155 ° C,
It is controlled to keep the temperature preferably at 120 to 135 ° C,
The flow rate of the deposition source gas flow 20 is controlled so as to maintain an appropriate value within a range of 4.5 to 6.3 m / sec. In addition, the mixing ratio of the air and the chemical and the supply flow rate thereof are appropriately controlled.

Therefore, the components, supply flow rate, and temperature of the evaporation source gas flow 20 are correctly controlled as set, so that
It can be avoided that these are unstable and the thickness of the metal oxide film formed on the surface of the body 31b of the glass bottle 31 becomes insufficient or fluctuates.

FIGS. 6 and 7 show a three-day experiment of this embodiment in comparison with the conventional case.

FIG. 7 shows a conventional case, but under the conditions of supply of the evaporation source gas flow 20 in which the film thickness to the mouth 31a of the glass bottle 31 can be regarded as 0, two portions above and below the body 31b are provided. Only a film thickness of about 20 CTU can be obtained.

On the other hand, in the case of the present embodiment, as shown in FIG. 6, under the supply condition of the deposition source gas flow 20 in which the film thickness of the mouth portion 31a can be regarded as 0, the flow rate is smaller than in the conventional case. The film thickness of the upper and lower portions of the body 31b in the deposition source gas flow 20 was about 40 CTU, and the film thickness of the metal oxide film could be doubled as compared with the conventional case.

In the case where the processing capacity of the hot coating apparatus is 56,000 lines / day (400 bpm), conventionally, cleaning and the like must be performed three times a day for five minutes due to the limit of continuous use. × 3 times / day = 15 minutes / day There is a time loss, but in the case of the present embodiment, this can be eliminated and the efficiency is improved by 1%.

Further, the strength and scratch prevention properties of the bottle treated in this example were high, and the number of recyclable times increased to about 12 times.

[0062]

According to the hood device of the present invention, the hood blocks a part of the vapor flow of the evaporation source gas from passing between the hood and the mouth of the glass bottle to escape upwardly from the hood. The spoiler provided at the opening of the groove prevents the rising gas flow from wrapping around the mouth of the glass bottle and tries to enter between the mouth of the glass bottle and the groove by generating a slight rising air flow. This is effectively shut off, preventing even a small amount of deposition source gas from wrapping around the mouth of the glass bottle. Avoiding the formation of a vapor deposition film without fail, the hood is water-cooled and the atmosphere around the mouth of the glass bottle is confined, without the influence of the inflow and passage of the vapor source gas, Atmosphere around the mouth of a glass bottle Because of sufficient cooling, even if a small amount of vapor deposition source gas wraps around the mouth of the glass bottle, this forms a vapor deposition film on the mouth of the glass bottle, or reduces some of the components of the vapor source gas stream. This prevents white powder from adhering to the inner surface of the hood. For this reason, the quality and yield, such as the strength and scratch resistance of the bottle, can be significantly improved, and can be maintained for a long time to improve the operation rate.

In this case, the spoiler enables the distance between the spoiler and the mouth of the glass bottle to be adjusted so that the gas flow of the deposition source gas around the mouth of the glass bottle can be controlled for any type of the glass bottle. Can be sufficiently prevented to further improve the quality and yield of the bottle.

Further, according to the above-described configuration of the hot coating apparatus of the present invention, the same effect as that of the hood apparatus can be obtained.
The flow rate of the deposition source gas flow is appropriately adjusted by the flow rate control means, and the required film thickness according to the type of the bottle and the type of the metal oxide film to be coated can be stably obtained without fluctuation of the gas flow rate over time. As a result, the quality and the yield of any type of glass bottle can be further improved, and this can be further guaranteed for a longer time to improve the operation rate sufficiently.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a bottle manufacturing apparatus to which the present invention is applied.

FIG. 2 is a perspective view of a hot coating line section in FIG.

FIG. 3 is a cross-sectional view of the hot coating line section of FIG. 2;

FIG. 4 is a cross-sectional view showing a relationship between a hood and a mouth of a glass bottle in the hot coating line of FIG. 2;

FIG. 5 is a block diagram of a control circuit.

FIG. 6 is a graph showing experimental results in this example.

FIG. 7 is a graph showing experimental results of a conventional example.

FIG. 8 is a cross-sectional view showing a relationship between a hood and a mouth of a glass bottle according to a conventional example.

[Explanation of symbols]

 Reference Signs List 3 hot coating device 11 blowout unit 12 suction unit 13, 14 blower 20 evaporation source gas flow 22 mixing device 31 glass bottle 31a mouth 31b trunk 31c top surface 32 hood 32a groove 32b hollow wall 32c water passage 34 spoiler 35 shaft 36 Water circulation pump 40 CPU 41, 42 Pressure sensor 45 Driver

Claims (3)

(57) [Scope of request for utility model registration] 1. A hood that covers the mouth of a vial flowing through a hot coating line and protects the mouth from hot coating on the body of the vial, and cools the atmosphere around the mouth through the hood. In the hood device, a water-cooled hood for passing cooling water is provided in a hollow wall formed with a groove that continuously covers the entire top surface and both sides of the mouth of the glass bottle, and an opening of the groove of the hood is provided. A hood device provided with a spoiler extending to near the lower side surface of the mouth of the glass bottle. 2. The hood device according to claim 1, wherein a distance between the spoiler and a mouth of the glass bottle is adjustable. 3. A hot coating line for performing hot coating around a body portion of a glass bottle to be conveyed by an evaporation source gas flow formed from one side to the other in a width direction of a glass bottle conveying path, and the hot coating line. A hood for covering the mouth of the glass bottle flowing through the hood, protecting the mouth from hot coating on the body of the glass bottle, and cooling the atmosphere around the mouth. A water-cooled hood that allows cooling water to flow is provided in a hollow wall that has a groove that continuously covers the entire top surface and both sides of the section, and the opening of the groove of this hood extends to near the lower side of the mouth of the glass bottle Hot coating, comprising: a spoiler extending therethrough; and a flow control means for controlling a flow rate of the deposition source gas flow. Location.