JPH0315523A - Single facer - Google Patents

Abstract

PURPOSE:To prevent vibration and noise and to accelerate a single facer by composing of a slide guide member for slidably guiding an adhered part of a liner with a core sheet, many rodlike grid electrodes aligned near the member, a high frequency power source for applying a high frequency voltage, and surface pressurizing means for pressing the sheet to the liner. CONSTITUTION:After a core sheet 8 is engaged between upper and lower stage rolls 1 and 2 to be formed in a wavy shape, its one side step top is coated with paste 7 by a pasted roll 4, and adhered to a liner 9 to be fed separately. In this case, since a gas is discharged from a vessel 14 toward the adhered part to a wavy core sheet 8a, the liner 9 backed up by a slide plate 12 by the pressure and the sheet 8a are effectively brought into contact through paste coating the step top. Further, since a high frequency voltage such as 10 - 300MHz is applied between adjacent electrodes of the grid electrodes 11 disposed adjacent to each other on the lower surface of the plate 12, the paste disposed in an electric field generated thereby is generated in self-heat generating action, and heated to be abruptly gelled.

Description

Detailed Description of the Invention (Field of Application in Industry) The present invention relates to a single facer for manufacturing one-sided corrugated board, which is one unit of a corrugator, which is a corrugated board manufacturing equipment, and particularly relates to a single facer for manufacturing one-sided corrugated board. This invention relates to a jingle facer having a characteristic joint.

(Prior Art) A conventional general single phasor employs the structure shown in FIG. In the same figure, 1 is an upper roll, 2 is a lower roll, 3 is a hollow pressure roll, 4 is a roll of glue, 5 is a doctor, 6 is a glue container, 7 is glue, Reference numeral 8 denotes a core paper, 8a a corrugated core paper formed into a corrugated shape, 9 a liner, and 10 a single-sided corrugated board.

First, to explain the manufacturing process of the single-phase single-sided corrugating pole 10 with the above structure, the core paper 8 is fed to the upper roll 1 side, and the upper roll 1 and lower roll 2
The corrugated core paper 8a is bitten into the occlusal part and is shaped into a wave shape.
becomes. Next, the corrugated core paper 8a is transferred with the rotation of the lower roll 2, the glue 7 in the glue container 6 is scooped up by the glue roll 4, and the glue roll 4 is adjusted to form a corrugated core by the glue roll 5. Gluing is applied to the top of the step of the paper 8a. The corrugated core paper 8a glued to the top of the tier is joined and glued to the shiina 9, which is separately supplied to the pressure roll 3, at the pressing part of the lower tier 2 and the pressure roll 3. This becomes a single-sided stepped hole 10.

In the conventional single facer with the above structure, the upper roll 1
is pressed against the lower eye roll 2, and the pressure roll 3 is pressed against the lower roll 2, respectively.

The former is used to pressurize the corrugated core paper 8 to form a corrugated shape, and the latter is used to quickly heat and heat the diluted starch paste that is usually used and adhered to the corrugated top of the corrugated core paper 8a. In order to provide the amount of heat needed to heat up the heat, the pressure roll 3, which is heated using the heat source of the heated flower air poured into the hollow part 3d, is pressed with high pressure to promote heating by heat conduction. have the purpose of

In addition, the lower L + - roll 2, together with the upper roll 1, has tooth-shaped steps machined at equal pitches on the outer surface of the roll, and the -/direct pressure roll 3 has a smooth surface, so that ゛ζ during operation. Each top of the tooth profile of the lower roll 2 is horizontally shaped so as to strike the surface of the pressure roll 3 at high cycles. That is, the upper roll 1, the lower roll 2, and the pressure roll 3 have the main precepts -
12. The number of teeth of the lower rolls 1 and 2 is cycled L.
It vibrates at the number of revolutions (N) x number of teeth (Z), and the number of teeth recycle N. When Z matches -, resonance occurs and the three wooden rolls vibrate violently. During such resonance, the stepped portions of the pressure roll 3 and the lower roll 2 collide violently 1, so that the gap between the two rolls 2, 3
A large collision load is applied to the corrugated core 11 (8a) and the liner 9, which are sandwiched between them, causing both papers to break, or due to the phase of vibration, the linear pressure between the lower roll 2 and the pressure roll 3 is insufficient, resulting in adhesion. The phenomenon of insufficient bonding may occur due to insufficient force.

Further, the collision between the lower roll 2 and the pressure roll 3 generates a large amount of noise, which is an important problem for single facers.

Further, in the above conventional structure, the corrugated core paper 8a with glue applied to the top of the corrugation is heated to a gelling temperature ( As a method of raising the ambient temperature to (usually around 60°C), the pressure roll 3
An indirect heat supply means is employed to heat the glue part by heat conduction and heat transfer through the meat part of the liner 9 and the liner 9. However, this method raises the temperature of the r:7 roll meat part and the paper, which do not need to be heated, which only leads to a loss of thermal energy.Especially when the a castle is operated at high speed, the glue part is heated up. If the heat supply is low (t), it is impossible to reach the ambient temperature up to the gelling temperature of the glue, which causes poor bonding.I! If "5.
12a There was a limit to speeding up as long as the conventional +I'I ¥ included method was adopted.

(Problems to be Solved by the Invention) The present invention solves the vibration problems of conventional single facers, such as noise and material paper breakage, and also solves the problem of glue heating, which is an obstacle to speeding up and saving energy. This was proposed for the purpose of improving the method, and from the viewpoint that the existence of a pressure roll heated from the inside was a fundamental cause of vibration and thermal energy loss, the pressure roll was eliminated. The present invention aims to provide a single facer that employs a new and efficient heating and bonding method.

(Means for Solving the Problems) For this reason, the present invention provides upper and lower rolls that interlock with each other for corrugating the core paper, and applying glue to the top of the corrugation on one side of the corrugated core paper. a gluing device, a sliding guide part disposed on the exit side of the lower roll of the core paper and slidingly guiding the liner to the bonding part with the core paper, and a sliding guide part disposed in parallel adjacent to the sliding member. a high frequency power source that applies a high frequency voltage between adjacent main poles of the Glisotho electrodes; and a surface pressure means that is provided opposite the sliding member and presses the core paper against the liner. This jingle facer is constructed as a means of solving the above problem.

(Function) The single facer of the present invention has the above-mentioned configuration. First, the function of the pressure contact means between the liner and the core paper will be described.
Almost uniform pressure is applied over a fairly wide area of
Does not generate vibration or noise.

Furthermore, several grid electrodes cooperating with the press-contact stage are disposed close to each other, for example, on the lower surface of the sliding plate, and a high-frequency wave Voltage is applied. Application of such a high frequency voltage generates an electric field between adjacent electrodes, and this finger field enables heating of the electric power 11.

Here, in '11, LJ. Since the jA power of water is as high as 20~:IO4t'r, the generated electric field is concentrated in the adhesive part. In other words, the temperature of the paper hardly reaches the ambient temperature, and only the temperature of the glue portion rises rapidly by -12 to cause gelation.

In other words, in the present invention, the rotating body is eliminated from the bonding part as much as possible to eliminate vibration and deceptive noise, and at the same time, it is possible to
Rather than using the conventional JJII heat method that utilizes heat conduction and transfer, it uses a method that generates internal heat generation to increase heating efficiency.

(Example) The present invention will now be described with reference to illustrated embodiments.

FIG. 1 is a schematic side sectional view of a single ferry showing a typical embodiment of the present invention. In the figure, 1 and 2 are upper and lower rolls for corrugated core paper, 4 is a glue roll, 5 is a tokuroll, 6 is a glue container, 7 is glue, 8 is core paper, and 8a is an upper and lower roll. 1 and 2 are corrugated core papers that are interlocked and shaped into a corrugated shape, 9 is a liner, and 10 is a single-sided corrugated board that is shaped by pasting the corrugated core paper 8a and the liner 9 together. The above is the third
This is the same as the conventional part shown in the figure with the same reference numeral.

Here, I2 is a sliding plate for guiding the liner 9 to the bonding portion with the corrugated core paper 8a and sliding the liner surface after becoming the single-sided corrugated board 10. 13 connects the liner 9 to the sliding plate 12
It is a guide roll that leads you upwards.

Reference numeral 11 denotes a rod-shaped grid electrode, in which a plurality of rod-shaped grid electrodes are arranged in the width direction of the paper at appropriate intervals close to the lower surface of the sliding plate 12; It is a container for supplying static pressure gas to push the air into the air.
and achieve the same purpose. The container 14 is disposed at a position facing the corrugated core paper 8a bonded to the liner 9.

FIG. 2 shows an example of the arrangement of the chrysode electrode 1l. FIG. 2 shows an example in which a grid electrode 11 is arranged with a sliding plate 12 interposed between the seams O of a single-sided corrugated board.

(However, the container 14 is omitted.) Grisol electrode 11
are alternately collected as shown in FIG. 2, and a high frequency voltage 15 is applied during this time. In FIG. 2, there is a 7F electrode 11 arranged in the flow direction of the single-sided stepped hole 10. This was done in consideration of the fact that the electric field generated by applying a voltage has a distribution between the electrodes, so that it should act evenly on the glue to be heated, but here the angle of inclination is limited. It's not my turn. Copper, brass, etc. can be used as the electrode material. There are no limitations on the shape, size, material, or arrangement of the electrodes. Also, is the quality and size of the sliding plate l2 intentionally limited? However, as will be described later, for example, a silicon laminated board, etc., which has a property of being difficult to heat due to the generated electric field, can be used.

When the apparatus of this embodiment having such a structure is driven and operated, the core paper 8 is bitten into the upper and lower stages I, I wheels 1 and 2 and shaped into a waveform, as in the conventional case, and then one side of the Glue 7 is applied to the top of the step by a glue roll 4, and is laminated with liner 9, which is fed separately. Since the gas is discharged to the paper 8a, the liner 9 bank-amplified to the sliding plate 12 and the corrugated core 1ffi8a are firmly attached to each other through the glue applied to the top of the step due to this pressure. become.

Further, in the grid electrode 11 disposed close to the lower surface of the sliding plate 12, for example, 10 to 30
Since a high frequency voltage of 0 M II■ is applied, the glue placed in the electric field generated thereby undergoes a self-heating action and rapidly becomes a gel due to temperature rise.

10 In general, dielectric heating is performed by applying E2・ε・ta to the target dielectric.
nδ・r (ε: relative dielectric constant, tanδ: electrical loss coefficient, f
: frequency, E: electric field strength), but among these, ε and tan δ are values specific to the dielectric material, and the above values are significantly different between water in glue and paper, with water being stronger than paper. 20 to 30 times higher.

Therefore, the generated electric field will be concentrated in the glue part, and the temperature of the paper will hardly rise, and only the temperature of the glue part will rise rapidly.

Incidentally, according to the experiments conducted by the present inventors, the voltage application time is 0.
．． 2-0.53GC. The temperature of the glue part is 60-80°C.
However, it has been found that paper does not rise by even 0.5°C. Further, the silicon laminated board used as the sliding plate described above has a property that the value of ε and tan δ is extremely small compared to water, and has a property that it is not easily heated like paper.

(Effects of the Invention) As explained in detail above, according to the present invention, in addition to being able to eliminate vibration and noise, which are important issues with conventional single facers, gelation of glue can be prevented by sealing. Since heat can be concentrated directly on the glue area rather than through heat conduction through Energy can also be used to increase speed.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view of a jingle facer according to the first embodiment of the invention, Fig. 2 is a perspective view showing an example of the layout of the Glisotho electrode in the bonded part, and Fig. 3 is a conventional single phaser. FIG. Explanation of main parts of the figure 1〇One-sided cardboard 11-Grinode electrode 12-Sliding plate 14-Pressure container 15-...High frequency voltage 1l 12

Claims (1)

[Claims] Upper and lower rolls that interlock with each other perform step forming of the core paper,
A gluing device that applies glue to the corrugated top portion on one side of the corrugated core paper; and a sliding guide member that is disposed on the exit side of the lower roll of the corrugated paper and that slides and guides the liner to the bonding portion with the corrugated paper. , a large number of rod-shaped grid electrodes arranged in parallel close to the sliding member, a high frequency power source for applying a high frequency voltage between adjacent electrodes of the grid electrodes, and a core paper provided opposite to the sliding member. and surface pressure means for pressing the liner against the liner.