JPS583665B2 - Discharge electrode for processing seaweed “su” - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a discharge electrode for surface treatment of synthetic resin seaweed cages.

Seaweed cages commonly used for drying seaweed are made of synthetic resin such as polyolefin resin, and their surfaces are very smooth and have low polarity, making it difficult for seaweed to adhere to them.

For this reason, one method for surface treatment of seaweed cages is to generate corona discharge, spark discharge, arc discharge, etc. using a discharge electrode, thereby forming the surface of the seaweed cage into a rough surface.

By the way, in the above-mentioned surface treatment by electric discharge machining, a rod-shaped or cylindrical electrode having the same diameter from one end to the other end has been conventionally used.

Therefore, when the surface of the seaweed cage is treated using a conventional electrode, the entire surface of the seaweed cage is uniformly discharge-machined, so that the degree of surface treatment becomes uniform over the entire surface.

After the seaweed has dried, when peeling the sheet nori from the seaweed cage,
Since the surface of conventional seaweed cages is uniformly treated as described above, the adhesion between the seaweed and the seaweed cage is strong over the entire surface, making it difficult to peel off.

As a result, when stripping the sheet nori, the nori feet, which are a condition for good quality, are easily cut off, especially near the knitting threads. Scratches such as chips and tears may occur.

On the other hand, if the output during the electrical discharge treatment is lowered to weaken the adhesion between the seaweed and the seaweed cage, when using the seaweed cage obtained in this way, there is a drawback that the sheet nori will naturally peel off during drying. Ta.

In order to solve the above-mentioned drawbacks, the present invention weakens the adhesion force of the seaweed to the seaweed cage in the area corresponding to the pair of both side edges including the four corners of the sheet nori and in the vicinity of the knitting thread, and also reduces the nori feet of the sheet nori. An object of the present invention is to provide a discharge electrode for treating a seaweed cage that can form a seaweed cage that is difficult to cut.

Next, the present invention will be explained with reference to the drawings.
, 2 is a cylindrical electrode, a plurality of conductive fin groups 3 are formed at predetermined intervals near the center of the cylindrical electrode, and tapered conductive fins are formed near both ends of the cylindrical electrode. This is a discharge electrode for seaweed pen treatment formed with tapered portions 4a and 4b.

In the figure, 5 is a seaweed cage, 6 is a cage rod, 7 is a knitting thread of the seaweed cage, 8 is a fin of a conductive fin group, and 9 is a coupler.

The material used for the cylindrical electrode is metal such as iron, and the metal electrode may be used as is, or the electrode may be coated with insulating rubber such as silicone rubber or EPT rubber. You can.

This cylindrical electrode includes a conductive fin group 3, a conductive taper portion 4a,
4b is provided in a protruding manner as shown in FIG.

Here, the fins 8 of the conductive fin group 3 and the conductive taper part 4a
, 4b may be formed integrally with the electrode, or may be formed separately so that they can be assembled together.

Each conductive fin group 3 is formed with a predetermined spacing, but the spacing can be maintained by appropriate means such as interposing a coupler 9.

The number, spacing, etc. of the fins constituting the fin group of the cylindrical electrode may be determined depending on the purpose of use, but according to the inventor's experiments, the number of fins is 3 to 8, and the spacing between each fin is 2. ~8
mm, and the appropriate distance between the fin groups is 8 to 20 mm.

In addition, the height of the fins and the width of the bottom are determined by the voltage and thickness of the seaweed cage.
The selection should be made appropriately depending on the type (one using a screen rod, one in the form of a plate), etc., but normally a height of 5 to 15 mm and a width of 2 to 8 mm are suitable.

The present invention has the above configuration, and the electrodes 1 and 2 are arranged at a distance of 3 to 20 m.
The electrodes 1 and 2 are arranged opposite each other with a gap of about 100 mn, and an appropriate form of discharge such as corona discharge, spark discharge, arc discharge, etc. is performed at these electrodes 1 and 2.

Further, the cylindrical electrode may be used as either a rotating electrode or a fixed electrode.

A cylindrical electrode is used as a rotating electrode (a shaft is fixed in the hollow part of the electrode's shaft, both ends of the shaft are rotatably mounted, a pulley is attached to one end of the shaft, and the shaft can be rotated via a belt). If the number of rotations is selected appropriately, the part of the seaweed cage to be treated can be treated with uniform intensity.

Next, to describe how to use the discharge electrode of the present invention, first, move the seaweed cage 5 between the electrodes using a feeding roller (not shown) so that the cage rods 6 of the seaweed cage 5 are parallel to the axial direction of the electrodes 1 and 2. When inserted, the surface of the screen rod 6 is locally destroyed by the electric field generated between the electrodes, and the surface of the screen rod 6 is roughened.

Here, a relatively strong electric field is generated at the screen bar portion facing the conductive fin group 3 of the cylindrical electrode, so that the degree of surface treatment is increased.

On the other hand, the electric field is weaker at the screen bar portion facing the tapered conductive taper portions 4a and 4b of the cylindrical electrode than at the conductive fin group, and the electric field is weaker as it gets closer to the end, so the degree of surface treatment is The surface treatment becomes gradually weaker toward the ends, and the weakest surface treatment is performed between the fin groups.

This is based on the principle that when the applied voltage is constant, the degree of surface treatment is inversely proportional to the distance between the electrodes, and the present invention allows the degree of surface treatment to be freely adjusted depending on the intended use of the nori cage. There are advantages.

Therefore, when inserting the nori cage between the electrodes, set the cylindrical electrode so that a part of the conductive taper faces the position corresponding to both side ends of the nori spread part on the nori cage, and also insert the knitted thread of the nori cage. To make a seaweed cage which is free from cutting or wobbling of the seaweed legs at the knitting thread part when set so that the fins 7 face each other between the fin groups, and from which a plate of good quality seaweed without chipping or tearing is obtained when used. Can be done.

As described above, the seaweed cage treated with the electrode of the present invention can be removed from the seaweed cage portions and knitted yarn portions that adhere to a pair of both side edges, including the four corners of the sheet nori, where chips and tears are likely to occur when the sheet nori is peeled off. Nearby areas can be surface treated more weakly than other areas,
Furthermore, since there is a part (between the fins) where the surface treatment is weaker than other parts near the center of the seaweed cage, good quality seaweed can be obtained that is less susceptible to cutting of the seaweed legs.

Moreover, the situation where the seaweed naturally peels off during drying does not occur.

Therefore, if this seaweed cage is used to produce sheet nori, the sheet nori and the seaweed cage can be easily separated by simply picking the corners of the sheet nori when peeling, and as a result, the corners will not be chipped. You can obtain high-quality sheets of seaweed without any tears.

Moreover, since the plate nori is easier to peel off than the seaweed cage, practical effects such as improved product production efficiency can be obtained.

In the plate nori dried according to the present invention, the nori feet are not cut,
In addition, it is less likely to leave marks from the knitting threads or the screen rods, so it is more glossy than conventional products and has a high commercial value.

Furthermore, by preparing a plurality of cylindrical electrodes of the present invention arranged in series in the axial direction of the electrode, the surface treatment of a plurality of parallel seaweed cages can be performed simultaneously, which further improves the surface treatment efficiency of the seaweed cages. It has characteristics.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of use of a conventional electrode, FIG. 2 is a perspective view of an example of use of an electrode according to the present invention, and FIG. 3 is a front view of a main part of the electrode of the present invention. 1, 2...electrode, 3...conductive fin group, 4a, 4b...part of the conductive taper.

Claims (1)

[Scope of Claims] 1. One or both of the electrodes 1 and 2 is a cylindrical electrode, and a plurality of conductive fin groups 3 are formed at predetermined intervals near the center of the cylindrical electrode. A discharge electrode for treating seaweed pens, which has tapered conductive taper portions 4a and 4b formed near both ends of the electrode. 2. The discharge electrode according to claim 1, comprising a plurality of cylindrical electrodes arranged in series in the axial direction.