JPH0712B2 - A coating material coating device for the inner surface of food containers - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a coating material coating device for an inner surface of a food container, and more specifically, a coating material is applied only on the inner surface of a food container other than the inner surface of the food container. It relates to a device that keeps it from appearing in the external space.

<Prior Art> As is well known, a case (mold) is used when molding food such as bread and cake.

When using the above case, apply a coating material to the inner surface of the case to facilitate removal of the molded product such as bread and cake from the case, or to apply a coating material to the surface of the molded product. There is.

Examples of the coating material include liquid materials such as oil, sugar water, water, eggs and cream, and various powder materials.

A conventional coating material coating device used for coating the coating material as described above conveys the case to a coating position, as disclosed in, for example, Japanese Patent Publication No. 45-31355. Then, a mist-like coating material is sprayed toward the inner surface of the case from a nozzle that is installed above the coating position and sprays the coating material.

Further, Japanese Patent Application Laid-Open No. 1-240132 proposes "a method and an apparatus for applying a coating material to food" in which liquid coating material particles are charged and applied to an object to be coated.

<Problems to be Solved by the Invention> Since the coating material sprayed from the nozzle toward the object to be coated spreads in the form of a mist, although it adheres to the inner surface of the case with the momentum ejected from the nozzle, a part of In some cases, the mist-like coating material remains floating without adhering to the inner surface of the case.

For this reason, the floating mist-shaped coating material may come out from the space on the inner surface of the case to the outside and adhere to various external members to be soiled with the coating material. If such a situation occurs, there is a problem in hygiene, and the above-mentioned various members have to be cleaned and maintained rigorously, so that there is a problem in that it takes time and labor.

Further, as described above, the floating mist-like coating material goes out of the inner space of the case, so that the amount of the coating material used becomes unnecessarily large, which is economically wasteful.

<Purpose> In view of the above problems, the present invention provides a coating device capable of effectively and uniformly coating a mist-like coating material sprayed from a nozzle toward the inner surface of the case. The purpose is to do.

<Means for Solving the Problems> To achieve the above object, the present invention has the following technical means. That is, to explain this by using the reference numerals in the accompanying drawings corresponding to the embodiments, the present invention is a conveyance means for conveying a case used when molding food such as bread and cake to a coating position, and An apparatus for applying a coating material to an inner surface of a case, which comprises a nozzle for spraying the coating material in a coating material tank from the upper surface of the opening of the case transported to a coating position by a transporting means, and the coating material in the case, A case coating means for covering the upper surface of the opening of the case 9 conveyed to a predetermined coating position by the means 10, and a mist-like coating material from the nozzle 3 toward the inner space A of the case 9 covered by the case coating means. And a discharge hand having a discharge needle 5 for performing corona discharge toward an environment in which the coating material sprayed by the coating material spraying means spreads in a mist form. And above and below the upper surface of the opening of the case 9 positioned at the predetermined coating position, the discharge means 5 is moved up and down to advance the discharge needle 5 into the inner space A of the case 9 at a predetermined cycle. A coating material coating device for the inner surface of a food container, characterized in that it has a moving means.

<Operation> Since the present invention has the above technical means, the mist-shaped coating material sprayed from the nozzle 3 is loaded by corona discharge in the space A on the inner surface of the case, and the loaded mist-shaped coating material is applied to the inner surface of the case 9. By being electrostatically adsorbed on the inner surface of the case 9, the amount of the mist-like coating material that is not applied to the inner surface of the case 9 and floats is reduced as much as possible. The amount of coating material that goes out of the case 9 is greatly reduced.

<Example> Next, a preferred example of the coating material application device for the inner surface of the food container of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view of a coating material coating device for the inner surface of a food container, and FIG.
The figure also shows a front view.

The coating material application device 1 for the inner surface of a food container according to the present invention includes a case coating means, a coating material spraying means, a discharging means, and a discharging needle up / down moving means.

The case covering means is provided to cover the upper surface of the opening of the case 9 which has been conveyed to a predetermined coating position by the conveying means as described later.

The coating material spraying means is provided for spraying the coating material in the form of mist from the nozzle 3 toward the inner space A of the case 9 covered by the case covering means.

The discharge means is provided to perform a corona discharge toward an environment in which the coating material sprayed by the coating material spraying means spreads in a mist, and a discharge needle for performing the corona discharge. Have five.

The discharge needle up-and-down moving means moves the discharge means up and down above the upper surface of the opening of the case 9 positioned at the predetermined coating position to move the discharge needle 5 into the inner space A of the case 9 in a predetermined cycle. It is provided to advance in.

Next, a specific configuration of the coating material coating device for the inner surface of the food container of this embodiment having the above-described configuration will be described below.

The nozzle 3 is connected to the coating material tank 13 via a coating material passage 16 and also an air tank via an air passage 17.
14 is connected to the valve in the coating passage 16
Adjusted by 15. These nozzles 3, coating material tank
13, the air tank 14, the valve 15, the coating material passage 16, the air passage 17 and the like constitute a coating material spraying means for spraying the coating material in a mist shape into the inner space A of the case 9.

The discharge needle mounting plate 4 provided for mounting the discharge needle 5 can be slid up and down by a slide member 7 along a guide post 6 mounted on a fixing plate 2 for fixing the nozzle. When spraying the coating material onto the inner surface of the case 9, it functions as a case covering means for covering the upper surface of the opening of the case 9. In this embodiment, the discharge needle vertical moving means 8 for moving the discharge needle mounting plate 4 up and down uses an air cylinder.

Further, using a conveyor as the transfer means 10,
In order to convey the cases 9 one by one by the conveyor, a stopper 11 formed of an air cylinder is provided.

Then, as shown in FIG. 2, a grounding / stopper 18 is provided for positioning the case 9 in the lateral direction. The grounding / stopper 18 has a grounding effect obtained by bringing the needle 18a into contact with the case 9 for the purpose of preventing danger.

Also, for the same reason, for safety, a safety cover 12 is attached to the discharge needle mounting plate 4 for preventing electric leakage due to corona discharge.

Next, the operation of the coating material coating device 1 for the inner surface of the food container of the present embodiment configured as described above will be described.

As shown in FIGS. 1 and 2, the case 9 transferred by the transfer means 10 is positioned at a predetermined coating position by the stopper 11 and the ground / stopper 18.

When the case 9 is positioned in this way, then, as shown in FIGS. 3 and 4, the discharge needle vertical movement means 8 moves the discharge needle mounting plate 4 downward along the guide post 6. Moving. Then, the discharge needle 5 finally moves into the case inner surface space A of the case 9.

When this movement is completed, the coating material flows into the nozzle 3 from the coating material tank 13 and the air flows from the air tank 14. As a result, the coating material is sprayed in the form of mist from the nozzle 3 toward the inside space A of the case.

At the same time, the discharge needle 5 causes corona discharge. Then,
The gas in the space A on the inner surface of the case is ionized, and the ions collide with the coating material particles floating in a mist state to charge the coating material particles.

On the other hand, the inner surface of the case 9 is previously charged with a polarity opposite to that of the charged coating material particles. Therefore, the charged coating material particles are electrostatically adsorbed on the inner surface of the case 9.

As a result, most of the coating material sprayed in the form of mist is effectively applied to the inner surface of the case 9, and the coating material is applied almost uniformly, so that the coating material can be effectively used. The coating material can be applied well.

After applying the coating material in this manner, the discharge needle 5 is moved upward by the discharge needle up-and-down moving means 8 and is similarly prepared for applying the inner surface of the next case.

The case 9 is grounded by a grounding / stopper 18, and the upper surface of the opening of the case 9 is covered by a safety cover 12. As a result, the danger due to the corona discharge can be surely prevented, so that highly safe work can be performed.

As described above, the coating material application device 1 for the inner surface of the food container of the present embodiment sprays the mist-shaped coating material from the nozzle 3 and at the same time performs corona discharge, and the coating material sprayed in the mist shape is applied to the inner surface of the case 9. The coating material does not get out of the case 9 because it is electrostatically attracted to the case 9. Therefore, the various members outside the case 9 are not contaminated by the coating material, which is hygienic in handling food and facilitates cleaning and maintenance of the various members.

Furthermore, since the coating material is applied electrically by electrostatic attraction,
It is easy to uniformly apply the coating material to the inner surface of the case 9.

Further, since the coating material does not go out of the case 9 and the coating material is uniformly applied to the inner surface of the case 9, the amount of the coating material used can be a necessary and sufficient amount, and the amount used can be smaller than before. You can If the coating material is oil, the amount used is
It was confirmed that 1/3 to 1/5 would be sufficient.

<Effects of the Invention> As described in detail above, according to the present invention, since the environment outside the case is not polluted by the coating material, it is possible to provide a coating material coating device preferable for food hygiene and facilitate cleaning and maintenance. Has the advantage that

Further, since the coating material is electrically attracted and applied, there is an advantage that the coating material can be uniformly applied to the inner surface of the case.

Furthermore, since the upper surface of the opening of the case is covered by the case covering means and the coating material sprayed in the form of mist is electrically attracted and applied, the amount of the coating material that goes out of the case can be minimized. Since the amount of the coating material can be minimized and the inner surface of the case can be uniformly coated, the amount of the coating material used can be suppressed to be small, which is advantageous in that it is economical.

[Brief description of drawings]

The accompanying drawings show an embodiment of the present invention, FIG. 1 is a side view of a coating material applying device for the inner surface of a food container, and FIG.
FIG. 3 is a side view during the application of the coating material, and FIG. 4 is a front view during the application of the coating material. In the figure, 1 ... coating material coating device for the inner surface of the food container, 2 ... nozzle fixing plate, 3 ... nozzle, 4 ... discharge needle mounting plate, 5 ... discharge needle, 8 ... discharge needle vertical movement means , 9 ... Case, 10 ... Transporting means, A ... Case inner space.

Claims (1)

[Claims] 1. A transporting means for transporting a case used for forming food such as bread and cake to a coating position, and a case inner surface space from the opening upper surface of the case transported to the coating position by the transporting means. A device for applying the coating material to the inner surface of the case, which is composed of a nozzle for spraying the coating material in the coating material tank, in which the upper surface of the opening of the case 9 transported to a predetermined coating position by the transporting means 10 is covered. Coating means, a coating material spraying means for spraying the coating material in a mist form from the nozzle 3 toward the inner space A of the case 9 covered by the case coating means, and the coating material sprayed by the coating material spraying means. Above the upper surface of the opening of the case 9 positioned at the predetermined coating position, the discharging means having the discharging needle 5 for performing corona discharge toward the environment in which the material spreads like a mist. An apparatus for applying a coating material to the inner surface of a food container, comprising: discharge needle vertical moving means for moving the discharge means up and down to advance the discharge needle 5 into the inner space A of the case 9 at a predetermined cycle. .