JPH0669237U - Hood device and hot coating device using the same - Google Patents

Abstract

(57) [Summary] [Purpose] The formation of a metal oxide film on the body is sufficient and no metal oxide film is formed on the mouth, improving both quality and yield.
Prevents powder from adhering to the inside of the hood. A water-cooled hood that allows cooling water to pass through is provided in a hollow wall 32b having a groove 32a that continuously covers the entire top surface 31c and both sides of the mouth 31a of the glass bottle 31, and the opening of the groove 32a of the hood is provided. Portion 31a of the glass bottle 31
Is provided with a spoiler 41 extending near the lower side surface of the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hood device and a hot coating device using the same, and more particularly, to a hood that covers the mouth of a glass bottle flowing through a hot coating line and protects the mouth from hot coating treatment on the body of the glass bottle. The present invention relates to a hood which has a cooling means for cooling the atmosphere around the mouth through the hood and a hot coating apparatus using the hood.

[0002]

[Prior 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 it and prevent it from being scratched. This surface treatment is roughly classified into so-called hot coating that is performed during the process from bottle making to slow cooling and cold coating that is performed after slow cooling.

Hot coating and cold coating are performed in layers for sufficient strengthening of the glass bottle. This is a dual coating.

In the case of hot coating, it is usually noted that the coating does not reach the mouth of the glass bottle, except when the aluminum foil is adhered to the mouth of the glass bottle for sealing.

This is because when the mouth of a glass bottle is hot-coated, the resulting metal oxide film and the cap that covers the mouth of the glass bottle form a relationship between the noble metal and the base metal and cause electrochemical corrosion. This may occur.

In addition, the top surface of the mouth of the glass bottle is required to have good adhesion to a seal provided on the inner surface of the cap provided on the mouth and a seal sheet made of resin such as polyethylene. This is particularly required for sealing when the content is a carbonated beverage, fermented beverage, or the like in which gas pressure is generated.

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

[0008] By the way, if the mouth of a glass bottle is hot-coated, even if the metal oxide film has minute spots, it turns into a mouse color or a white color due to the heating during the baking. A whitening phenomenon occurs, which is conspicuous and can be easily identified even by visual inspection.

By the way, conventionally, in order to prevent the glass bottle from being defective due to hot coating and to improve the yield, a hood device is used.

As shown in FIG. 8, this hood device has a pair of left and right hoods c, which covers the mouth portion b of the glass bottle a flowing through the hot coating line from both sides. These hoods c, c are formed by a hollow wall having a hook-shaped cross section, and protect the mouth b from the hot coating treatment on the body e of the glass bottle a.

The hoods c, c extend a little downward from their outer surfaces and, together with the skirt wall f having an L-shaped cross section which is bent toward the mouth of the glass bottle, hot-coats the body portion e of the glass bottle. By suppressing the vapor deposition source gas flow g from flowing around the mouth of the glass bottle, the metal oxide film is prevented from being deposited on the mouth of the glass bottle.

Further, the hoods c, c are air-cooled hoods through which air is passed through the hollow wall, and even if a small amount of the vaporization source gas flow g circulates around the mouth of the glass bottle, this hood c Thus, the metal oxide film is prevented from being deposited on the mouth of the glass bottle by suppressing the vapor deposition.

[0013]

[Problems to be solved by the device]

 However, in the above-mentioned conventional apparatus, it is not possible to sufficiently suppress a part of the vapor deposition source gas flow g from wrapping around the mouth of the glass bottle, and the vapor source gas that wraps around the mouth of the glass bottle. The deposition of the metal oxide film on the mouth of the glass bottle due to the flow g cannot be sufficiently suppressed. For this reason, a relatively large amount of metal oxide film with minute spots is vapor-deposited on the mouth of the glass bottle, which greatly reduces the yield.

In addition, white powder adheres to the inner surface of the hood c due to reduction of a part of the gas components, and the powder also causes clogging of a nozzle that forms a vapor deposition source gas flow.

Therefore, the hot coating device cannot be used continuously for a long time, and the film thickness of the vapor deposition film formed around the body of the glass bottle gradually decreases with the passage of time, which affects the quality of the glass bottle. To do.

As a result of various experiments conducted by the inventors of the present invention, the vapor deposition source gas flow g is as high as about 155 ° C., and the mouth of the glass bottle and the hoods c and c on both sides of the vapor source gas flow g. A rising gas flow h passing through the gap to the upper side is generated, which causes a relatively large amount of the vapor deposition source gas to wrap around the mouth of the glass bottle, and the rising gas flow h causes a pair of hoods c, c. The flow of the rising gas flow h passing between each other and between each of them and the mouth of the glass bottle hinders the cooling of the atmosphere around the mouth of the glass bottle with the hoods c, c, and the rising gas. Since the flow h also has a thermal effect on the mouths of the hoods c and c and the glass bottle, it was 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]

[Means for Solving the Problems]

 In order to achieve the above-mentioned problems, the hood device of the present invention has a hood that covers the mouth of a glass bottle flowing through a hot coating line and protects this mouth from the hot coating treatment on the body of the glass bottle. In a hood device having a hood that cools the atmosphere around the mouth through the hood, cooling water is passed through a hollow wall having a groove that continuously covers the entire top surface and both sides of the mouth of the glass bottle. A water-cooled hood is provided, and a spoiler extending to near the lower side surface of the mouth of the glass bottle is provided at the opening of the groove of the hood.

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

In order to achieve the above-mentioned objects, the hot coating apparatus of the present invention is a glass bottle that is transported by a vapor deposition source gas flow formed from one side to the other in the width direction of the glass bottle transport path. The hot coating line for hot coating around the body of the glass bottle and the mouth of the glass bottle that flows through this hot coating line are covered to protect the mouth from the hot coating process for the body of the glass bottle, and the mouth area is also protected. In a hot-coating device equipped with a hood that cools the atmosphere of the glass bottle, a water-cooled type in which cooling water is passed through a hollow wall that has grooves that continuously cover the entire top surface and both sides of the mouth of the glass bottle A hood is provided, and a spoiler extending near the lower side surface of the mouth of the glass bottle is provided at the opening of the groove of the hood. And a flow rate adjusting means for adjusting the flow rate.

[0021]

[Action]

 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, A portion of the vapor deposition source gas flow in the hot coating line is blocked from passing between the hood and the mouth of the vial to escape above the hood, creating a rising gas flow around the mouth of the vial. In addition to being able to prevent it, even if a slight upward airflow is generated and tries to enter between the mouth of the glass bottle and the groove, the spoiler provided in the opening of the groove is additionally provided in part. It is easy to set and replace the mounting position, etc., and keep the proper distance between the bottle and the mouth according to the type of passing bottle and the thickness of the mouth so that the rising gas flow can enter. Effectively Cross, and it is possible to prevent from flowing around the mouth of the glass bottle. In addition, the hood is water-cooled, and the top and bottom sides of the mouth of the glass bottle are continuously covered to confine the atmosphere around the mouth of the glass bottle. Without, the atmosphere around the mouth of the glass bottle can be fully cooled.

In this case, the spoiler enables adjustment of the distance between the mouth of the glass bottle and the spoiler, so that the flow of the vaporization source gas around the mouth of the glass bottle can be controlled by any type of glass bottle. However, it can be sufficiently prevented.

Further, according to the above configuration of the hot coating apparatus of the present invention, since the flow rate of the vapor deposition source gas can be appropriately adjusted by the flow rate adjusting means in addition to the same operation as the hood apparatus, the type of bottle It is possible to guarantee the required film thickness according to the type of the metal oxide film to be coated or to be coated, and to obtain a stable film without fluctuation of the gas flow rate over time.

[0024]

【Example】

 Hereinafter, an example of a hot coating apparatus to which the present invention is applied will be described in detail with reference to the drawings.

FIG. 1 is a plan view showing the outline of a bottle making line. As shown in the figure, a bottle forming machine 2 and a hot coating device 3 are arranged on a first conveyor line 1, and a second conveyor line 1 is formed on the first conveyor line 1 at a right angle thereto. An annealing furnace 5 is arranged on the conveyor line 4.

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

In the hot coating device 3, when a glass bottle still in a high temperature state immediately after molding passes, a vapor deposition source gas flow 20 as shown in FIGS. 3 and 4 is blown onto the glass bottle to deposit a metal oxide film. , The strength of the bottle is improved and scratches are prevented.

The glass bottle that has passed through the hot coating device 3 is transferred from the first conveyor 1 to the second conveyor 4, and is sent to the annealing furnace 5 there.

The glass bottle contained in the slow cooling furnace 5 is subjected to the baking treatment in the first stage, and then is gradually cooled. After slow cooling, the glass bottle is subjected to cold coating treatment (not shown) and the bottle manufacturing process ends.

As shown in FIG. 2 and FIG. 3, the hot coating apparatus 3 includes a spouting unit 11 for spouting the vapor deposition source gas on one side of the conveyor line 1 and a suction unit for sucking the vapor deposition source gas on the other side. 12 are each provided to form the vapor deposition source gas stream 20.

In order to eject and suck the vapor deposition source gas, blowers 13 and 14 are connected to the front and rear of the jet unit 11 and the suction unit 12, respectively, and the vapor deposition source gas is circulated through the duct 15. A source gas stream 20 is formed.

Further, the chemical liquid in the chemical liquid drum 21 is mixed at a predetermined ratio with the pressurized air by the pump 23 in the mixing device 22 part and sent to each unit 11, 12.

A hood 32, which is located above the glass bottle 31 flowing through the first conveyor line 1 and covers the mouth 31 a of the glass bottle 31 from above, is located between the upper portion of the ejection unit 11 and the suction unit 12. It is provided.

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

Specifically, a water-cooled hood in which cooling water is passed as a water passage 32c in a hollow wall 32b having a groove 32a continuously covering the entire top surface 31c and both sides of the mouth 31a of the glass bottle 31. There is. Therefore, a cooling water circulation pump 36 is connected to the hood 32.

According to this hood 32, the mouth portion 31a of the glass bottle 31 flowing through the hot coating line of the hot coating device 3 is received in the groove 32a, and the entire top surface 31c of the mouth portion 31a and both sides thereof are continuously connected. Will be covered.

As a result, the hood 32 blocks a part of the vapor deposition source gas flow 20 in the hot coating apparatus 3 from passing through between the hood 32 and the mouth portion 31 a of the glass bottle 31 to the upper side of the hood 32. It is possible to prevent an ascending gas flow from flowing around the mouth 31a of the glass bottle 31.

However, since the vapor deposition source gas flow 20 has a high temperature of about 155 ° C. at the highest, although the positive ascending gas flow passing through the hood 32 is blocked, an ascending gas flow 20 a of about natural convection is generated. The part tries to enter between the hood 32 and the mouth part 31a of the glass bottle 31.

However, this is a skirt having inward flanges 33a that are attached to the outer surfaces on both sides of the hood 32 and extend downward, and are bent toward the mouth 31a side of the glass bottle 31 that passes through the groove 32a as in the conventional case. The wall 33 is provided, and the flange 33a is obstructed by being as close as possible to the opening 31a, and the rising gas flow 20a from the vapor deposition source gas flow 20 is provided between the flange 33a and the opening 31a. It is possible to prevent the entry and the wraparound around the opening 31a.

However, the skirt wall 33 having the flange 33a has an upper end fixed to the outer surface of the hood 32 and extends to the vicinity of the mouth 31a, and is a strong metal member in terms of durability, and is a firm material. Support is needed. Therefore, it is not easy to adjust the position, and even if the hood 32 can be adjusted in the vertical direction, it is difficult to adjust the position between the flange 33a and the mouth 31a of the glass bottle 31. It is also difficult to replace.

Therefore, in consideration of the positional deviation width of the glass bottle 31 flowing on the first conveyor 1 and the thickness of the mouth portion 31a of the glass bottle 31, the mouth portion 31a is not contacted under any condition. It is necessary to set the position of the flange 33a so as to have a safe distance that does not damage it, and a relatively large distance is formed between the flange 33a and the mouth portion 31a. Moreover, the seal portion between the glass bottle 31 and the glass bottle 31 is formed in only one step.

Therefore, 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 spoiler 34 extending to the vicinity of the side of the mouth 31a of the glass bottle 31 is provided at the opening of the groove 32a of the hood 32.

The spoilers 34 are provided in two stages, one above the other, and the flange 33a has a multiple sealing structure between the opening of the groove 32a of the hood 32 and the mouth 31a of the glass bottle 31. improves.

Further, the spoiler 34 can exert the sealing property only by being positioned in the opening of the groove 32a of the hood 32, and can be thin and lightweight so that it is easy to set or replace the mounting position. Therefore, it is possible to easily set an appropriate gap according to the positional deviation width of the mouth portion 31a of the glass bottle 31 and the difference in the thickness of the mouth portion 31a depending on the type of the porosity. It is possible to remarkably improve the sealing property by minimizing the distance from the portion 31a.

In particular, in this embodiment, the lower spoiler 34 is rotatable about the shaft 35, and by this rotation, the gap between the spoiler 34 and the mouth portion 31a can be adjusted more easily and delicately.

Therefore, it is possible to sufficiently prevent the gas of the vapor deposition source gas stream 20 from entering between the hood 32 and the mouth portion 31 a of the glass bottle 31 and flowing around the mouth portion 31 a.

Moreover, the hood 32 is water-cooled, and continuously covers the entire area of the top surface 31c of the mouth 31a of the glass bottle 31 and both sides thereof to keep the atmosphere around the mouth 31a of the glass bottle 31 in a vapor deposition source. Since the atmosphere around the opening 31a of the glass bottle 31 can be sufficiently cooled without being affected by the inflow and passage of the gas flow, it is difficult for the vapor deposition source gas to flow around the opening 31a of the glass bottle 31. Even if it wraps around, it may form a vapor deposition film on the mouth 31a of the glass bottle 31 or cause white powder to adhere to the inner surface of the hood 32 due to the reduction of a part of the vapor source gas flow. Can be prevented.

Therefore, even if the mouth portion 31a of the glass bottle 31 is capped with a metal, a metal oxide film having a relationship between a noble metal and a base metal is not formed between the cap portion and the mouth portion 31a. The conventional electrochemical corrosion does not occur.

Further, the glass bottle 31 after the hot coating treatment is subjected to the anneal treatment at the gradual cooling stage, but since there is no vapor deposition of the metal oxide film on the mouth portion 31a of the glass bottle 31, it is likely to be whitened. Nothing happens.

Further, the powder attached to the inner surface of the hood 32 does not cause the ejection port and the suction port for forming the vapor deposition source gas stream 20 to be clogged with time, and such clogging causes vapor deposition. It is avoided that the flow rate of the source gas flow 20 fluctuates and the film thickness of the formed metal oxide film becomes thin.

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

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

This control circuit has a CPU 40, and at its input part, the pressure of the suction port of the vapor deposition source gas flow 20 in the hot coating line formed by the hot coating device 3 and the central part, that is, the hood 32. Pressure sensors 41 and 42 for detecting the pressure of the portion immediately above the mouth 31a of the glass bottle 31 in the groove 32a, a temperature sensor 43 for detecting the temperature of the vapor deposition source gas flow 20, and a chemical concentration detection Outputs of the sensor 44 and other inputs are input, and from the output section, a driver 45 for driving and controlling the blowers 13, 14 as control loads under inverter control, mixing ratio of chemical liquid, air, supply flow rate, etc. With respect to the above, the control signal of the driver 46 for driving and controlling the mixing device 22, the temperature control signal and the like, and other outputs are output.

Accordingly, the temperature of the vapor deposition source gas stream 20 is controlled so as to be maintained at a necessary temperature within a normal set range of about 95 ° C. to 155 ° C., preferably 120 to 135 ° C., and the vapor deposition source gas stream 20 is controlled. The flow velocity is controlled so as to maintain an appropriate value within the range of 4.5 to 6.3 m / sec. Also, the mixing ratio of the air and the chemical solution and the supply flow rate thereof are appropriately controlled.

Therefore, since the components of the vapor deposition source gas flow 20, the supply flow rate, and the temperature are properly controlled as set, these are unstable and the metal oxide film formed on the surface of the body portion 31 b of the glass bottle 31 is prevented. It is possible to prevent the film thickness from becoming insufficient or changing.

By the way, an experimental example of the present embodiment during three days is shown in FIGS. 6 and 7 in comparison with the conventional case.

FIG. 7 shows a conventional case, but under the supply condition of the vapor deposition source gas flow 20 in which the film thickness can be regarded as 0 at the mouth 31a of the glass bottle 31, the upper and lower portions of the body 31b are located. , 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 vapor deposition source gas flow 20 in which the film thickness of the opening 31a can be regarded as 0, the flow rate is smaller than that in the conventional case. The film thickness of the upper and lower portions of the body portion 31b became about 40 CTU by the vapor deposition source gas flow 20, and the film thickness of the metal oxide film could be doubled as compared with the conventional case.

Further, when the processing capacity of the hot coating apparatus is 56000 lines / day (400 bpm), conventionally, it is necessary to carry out repairs such as cleaning every 5 minutes 3 times a day due to the limit of continuous use, and 5 minutes / time. × 3 times / day = 15 minutes / day There is a time loss, but in the case of this embodiment, this can be eliminated and the efficiency is improved by 1%.

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

[0062]

[Effect of device]

 According to the hood device of the present invention, the hood blocks a part of the vaporization source gas flow from passing through between the hood and the mouth of the glass bottle to the upper side of the hood, and the hood around the mouth of the glass bottle is blocked. The spoiler installed in the opening of the groove is effective even if it prevents the rising gas flow that wraps around the gas from flowing into the gap between the mouth of the glass bottle and the groove. The vaporization source gas flow circulates around the mouth of the glass bottle to prevent the vaporization of the vapor deposition source gas even if a small amount of the vaporization source gas flows around the mouth of the glass bottle. Be sure to avoid the formation of the glass bottle, keep the hood water-cooled, and keep the atmosphere around the mouth of the glass bottle closed, without affecting the vaporization source gas. Sufficient atmosphere around the mouth Therefore, even if a small amount of vapor deposition source gas circulates around the mouth of the glass bottle, it may form a vapor deposition film at the mouth of the glass bottle or reduce some of the components of the vapor source gas. Prevent white powder from adhering to the inside of the hood. For this reason, the quality and yield of the bottle such as strength and anti-scratch property can be remarkably improved, which can be maintained for a long time to improve the operation rate.

In this case, the spoiler allows the distance between the mouth of the glass bottle and the mouth portion of the glass bottle to be adjusted so that the flow of the vapor deposition source gas around the mouth of the glass bottle can be adjusted to any type of the glass bottle. However, it can be sufficiently prevented to further improve the quality and yield of bottles.

According to the above configuration of the hot coating apparatus of the present invention, the flow rate of the vapor deposition source gas can be appropriately adjusted by the flow rate adjusting means in addition to the same effect as that of the hood apparatus, and the bottle type and the coating can be adjusted. Since the required film thickness according to the type of metal oxide film to be used can be stably obtained without fluctuation of the gas flow rate over time, the quality and yield of any type of glass bottle are further improved. Moreover, this can be guaranteed for a longer period of time, and the operating rate can be sufficiently improved.

[Brief description of drawings]

FIG. 1 is a plan view showing the outline of 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.

3 is a cross-sectional view of the hot coating line part of FIG.

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

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 transverse cross-sectional view showing a relationship between a hood and a mouth portion of a glass bottle in a conventional example.

[Explanation of symbols]

 3 Hot Coating Device 11 Spouting Unit 12 Suction Unit 13, 14 Blower 20 Deposition Source Gas Flow 22 Mixing Device 31 Glass Bottle 31a Mouth 31b Body 31c Top Surface 32 Hood 32a Groove 32b Hollow Wall 32c Water Pass 34 Spoiler 35 Shaft 36 Water circulation pump 40 CPU 41, 42 Pressure sensor 45 Driver

Claims (3)

[Scope of utility model registration request] 1. A hood that covers the mouth of a glass bottle flowing through a hot coating line and protects the mouth from the hot coating treatment for the body of the glass bottle, and cools the atmosphere around the mouth through the hood. In such a hood device, a water-cooled hood for passing cooling water is provided in a hollow wall having a groove continuously covering the top surface and both sides of the mouth of the glass bottle, and the opening of the groove of the hood is provided. The hood device is 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 space between the spoiler and a mouth portion of the glass bottle can be adjusted. 3. A hot coating line for performing hot coating around the body of a glass bottle to be transported by a vapor deposition source gas flow formed from one side to the other in the width direction of the transport path of the glass bottle, and the hot coating line. A hot-coating device that covers the mouth of a glass bottle that flows through, protects the mouth from hot-coating treatment on the body of the glass bottle, and cools the atmosphere around the mouth. A water-cooled hood that allows cooling water to pass through is provided in the hollow wall that forms a groove that continuously covers the entire top surface and both sides of the bottle, and the opening of this hood groove extends to near the lower side surface of the mouth of the glass bottle. Hot coating provided with an extending spoiler and flow rate adjusting means for adjusting the flow rate of the vapor deposition source gas flow. Location.