JPH11105173A - Double-face machine of corrugation machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the title double-face machine capable of being increased in operation speed by a simple and inexpensive means. SOLUTION: In a hot plate 25, a plate part 26A is heated from the side of a heat receiving surface 28 by the heat of steam A and heat is transmitted to a radiation surface 27 and double-faced corrugated cardboard 5 is heated by this heat through back liner paper 4 to gel an adhesive size 15 and corrugated paper 3 and the back liner paper 4 are integrally laminated. The heat receiving surface 28 is formed so that the area thereof is made larger than that of the radiation surface 27 to become wide in its contact part with steam A and a sufficient quantity of heat can be transmitted to the radiation surface 27 and the quantity of heat removed on the side of the back liner paper 4 can be efficiently supplied and the transfer speed of the double-faced corrugated cardboard can be increased and production efficiency can be enhanced and, in spite of the addition of simple constitution, the number of hot plates 25 can be reduced and the miniaturization or cost reduction of equipment becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided machine of a corrugating machine for producing a double-sided corrugated cardboard by laminating backliner paper on a corrugated surface of a single-sided corrugated cardboard, for example.

[0002]

2. Description of the Related Art Conventionally, as a double-sided machine of this type, for example, a structure as disclosed in Japanese Utility Model Laid-Open No. 62-1926 has been provided. In this conventional configuration, a backer for adhering the back liner paper to the corrugated surface of a single-sided corrugated cardboard includes a guide roll, a hot plate on which the back liner paper can slide, and a belt conveyor (canvas belt) contacting the upper liner paper. And a press roll contacting the upper surface of the working portion of the belt conveyor,
It is composed of a cooling part and the like.

[0003] According to this conventional configuration, an adhesive is applied to the corrugated surface of the corrugated paper by a gluing roll at the gluing portion.
After the back liner paper is applied to the corrugated surface to form a double-sided corrugated cardboard, it is slid and moved on the hot platen group by the transfer force of the belt conveyor, and the adhesive is cured by heating at that time, and the corrugated sheet and the back liner Laminated with paper.

[0006] As shown in FIG. 6, the main body 41 of the hot platen 40 is formed in a box shape, and the flat upper surface 41 A of the main body 41 allows the back liner paper 48 to slidably contact with the heat radiating surface 42. Is formed, and the upper plate portion 41 is formed.
A heat receiving surface 43 is formed by the flat lower surface of A. Therefore, when the steam A is supplied to the space portion 44 in the main body 41, the heat of the steam is transferred from the heat receiving surface 43 to the heat radiating surface 42, so that the transfer force of the belt conveyor 45 causes the heat on the heat radiating surface 42. By heating the double-faced cardboard 46 that is being slid and moved, the adhesive glue is gelled, and the corrugated paper 47 and the back liner paper 48 are bonded and integrated.

[0005]

However, according to the conventional structure described above, the flat heat receiving surface 43 has the same or smaller area as the heat radiating surface 42.
In order to transmit a sufficient amount of heat to gel the adhesive glue to the side, the operation speed, that is, the transfer speed of the double-faced corrugated cardboard 46 is kept low, and the production efficiency becomes poor.

To increase the operation speed by transmitting a sufficient amount of heat, it is conceivable to increase (increase) the number of hot plates 40. In this case, however, the size of the equipment is increased (lengthened). ) And higher prices. An air bag system is also considered in which an air bag is provided on the belt conveyor 45 to apply air pressure over a wide range. However, in this case as well, the equipment becomes large, complicated, and expensive.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a double-sided machine of a corrugating machine capable of increasing the operating speed by simple and inexpensive means.

[0008]

In order to achieve the above-mentioned object, according to the present invention, a double-sided corrugating machine according to the first aspect of the present invention is provided with a backer for bonding a back liner paper to a corrugated surface of a single-sided cardboard. The hot platen for heating the back liner paper is provided, and the main body of the hot platen is formed in a box shape, and a heat radiation surface is formed by an outer surface of the plate portion on the back liner paper side of the main body, A heat receiving surface is formed by the inner surface, and the heat receiving surface is characterized in that it has a larger area than the heat radiating surface.

Therefore, according to the first aspect of the present invention, the double-faced corrugated cardboard is moved on the hot platen side in the backer portion, and at this time, the plate portion is heated from the heat receiving surface side by the heat of the supplied steam. Since the heat is transferred to the heat dissipation surface, the double-faced cardboard is heated by the heat via the back liner paper, and the adhesive is gelled by the heating, so that the corrugated paper and the back liner paper are heated. Are bonded and integrated. At this time, the heat receiving surface has a larger area than the heat dissipating surface, so the heat receiving surface having a larger area has a larger portion in contact with the steam, and a sufficient amount of heat is transferred to the heat dissipating surface side. Therefore, the amount of heat deprived to the back liner paper side can be efficiently supplied.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The single-sided corrugated cardboard 1 is composed of a laminate of liner paper 2 and corrugated paper 3 and is transported with the corrugated paper 3 as the lower part. A gluing unit 10 for adhering the glue 15 to the corrugated surface of the corrugated paper 3 includes a tank 11 containing the glue 15, a glue roll 12 contacting the corrugated surface, and a glue contacting the glue roll 12. It is composed of a cutting roll 13, a press roll 14 that contacts the liner paper 2, and the like.

A backer 20 for bonding the back liner paper 4 to the corrugated surface of the single-sided corrugated cardboard 1 comprises a guide roll 21 for guiding the back liner paper 4 to abut the corrugated paper 3;
A hot platen 25 on which the back liner paper 4 can slide freely, a belt conveyor (canvas belt) 22 that comes into contact with the upper liner paper 2, a pressing roll 23 that comes into contact with the upper surface of the working portion of the belt conveyor 22, and a cooling unit 24 Etc.

The main body 26 of the hot platen 25 is formed in a box shape. The upper plate 26A of the main body 26 on the back liner paper 4 side has a flat upper surface (outer surface). A heat-dissipating surface 27 that can slide freely is formed, and the heat-receiving surface 2 is formed by the lower surface (inner surface) of the upper plate portion 26A.
8 are formed. At this time, the heat receiving surface 28 is formed in a wave shape so as to have a larger area than the heat radiating surface.

The lower plate 26B of the main body 26 includes a main body 2
A steam supply unit 30 for supplying steam A to the space 29 in the inside 6 and a drain discharge unit 31 for removing the drain B from the space 29 are provided.

The operation of the above embodiment will be described below. First, in the gluing section 10, the single-sided cardboard 1
The glue 1 is applied to the wave surface of the corrugated paper 3 by the glue roll 12.
After the backing liner 5 is attached and the back liner paper 4 is applied to the corrugated surface to form a double-faced cardboard 5, the double-faced cardboard 5 is transferred by the belt conveyor 22 to the hot platen 25.
It is slid and moved above.

At this time, in the hot platen 25, the upper plate portion 26A is heated from the heat receiving surface 28 side by the heat of the steam A supplied from the steam supply portion 30 to the space portion 29, and heat is transferred to the heat radiating surface 27. Have been. Therefore, the double-faced corrugated cardboard 5 slidably moved on the heat radiating surface 27 by the transfer force of the belt conveyor 22 generates the back liner paper 4
The adhesive paste 15 is gelled by the heating at that time, and the corrugated paper 3 and the back liner paper 4 are bonded and integrated.

At this time, the heat receiving surface 28 is formed in a wave shape, and the area thereof is formed larger than the heat radiating surface 27.
The wave-shaped heat receiving surface 28 having a large area has a large portion in contact with the steam A, and can transfer a sufficient amount of heat to the heat radiating surface 27 side, thereby efficiently reducing the amount of heat taken to the back liner paper 4 side. Can supply. Therefore, the operation speed, that is, the transfer speed of the double-faced cardboard 5 can be increased, and the production efficiency can be improved. Moreover, the number of hot plates can be reduced, and the size and cost of the equipment can be reduced, even with the addition of a simple configuration.

Drying of the double-faced cardboard 5 bonded and integrated as described above is promoted by cooling in the cooling unit 24. Next, another embodiment of the present invention will be described with reference to FIG.

That is, the backer section 20 has a steel belt 35 which is opposed to the upper belt conveyor 22 and is lower.
The lower surface (back surface) of the steel belt 35 is in sliding contact with the heat radiating surface 27 of the hot platen 25.

According to this embodiment, the single-faced corrugated cardboard 1 and the back liner paper 4 are simultaneously polymerized and clamped by the two conveyors 22 and 35.
Since the transfer is performed integrally by the pulling of the members 2 and 35, the transfer can be performed without the occurrence of sliding contact or the like, and the generation of surface scratches can be eliminated. At that time, the lower steel belt 35
Is sufficiently heated by sliding contact with the hot platen 25, and the heat is transmitted to the double-faced corrugated cardboard 5 side via the back liner paper 4 during the integral transfer. Supply efficiency can be improved.

Next, still another embodiment of the present invention will be described.
A description will be given based on FIG. That is, the air bag 38 is provided on the upper side of the belt conveyor 22 in the backer unit 20, and an air bag system for applying air pressure over a wide range is added. In this case, the air bag 38 is constructed on a small scale so as not to cause much increase in size and complexity of the equipment.

According to this embodiment, the number of the hot plates 25 can be reduced and the length of the backer portion 20 can be extremely reduced by using the hot plates 25 in combination with the above-described structure. In addition, as shown by a virtual line in FIG.
2 may be removed, and the airbag 38 may directly act on the liner paper 2 of the double-faced cardboard 5.

In each of the above embodiments, the heat receiving surface 28
Is formed in a wavy shape so that the area is larger than the heat radiation surface, but it may be formed so that the area becomes larger due to the uneven shape like a gear tooth or the uneven shape like a saw tooth. Alternatively, the recessed arc surface may be formed to have a large area by a continuous shape.

The steel belt 35 and the airbag 38, which are combinations of the above embodiments, may be employed.

[0024]

According to the first aspect of the present invention, the double-faced corrugated cardboard moves on the hot platen side in the bucker portion, and at this time, the plate portion is moved from the heat receiving surface side by the heat of the supplied steam. Since it is heated and heat is transferred to the heat dissipation surface, the double-faced cardboard can be heated via the back liner paper by the heat. Can be integrated.

At this time, the heat receiving surface has a larger area than the heat radiating surface, so that the heat receiving surface having a large area has a larger portion in contact with the steam, so that a sufficient amount of heat can be supplied to the heat radiating surface. The heat can be efficiently transferred to the back liner paper side. Therefore, the operation speed, that is, the transfer speed of the double-faced cardboard can be increased, and the production efficiency can be improved. In addition, the number of hot plates can be reduced, and the size and cost of the equipment can be reduced, even with the addition of a simple configuration.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is a longitudinal sectional side view of a hot plate in a double-sided machine of a corrugating machine.

FIG. 2 is a side view of the double-sided machine of the corrugating machine.

FIG. 3 is a side view of a main part of the double-sided machine of the corrugating machine.

FIG. 4 shows another embodiment of the present invention, and is a longitudinal side view of a hot plate in a double-sided machine of a corrugating machine.

FIG. 5 is a vertical sectional side view of a hot plate in a double-sided machine of a corrugating machine, showing still another embodiment of the present invention.

FIG. 6 shows a conventional example, and is a vertical side view of a hot plate portion in a double-sided machine of a corrugating machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Single-sided corrugated cardboard 2 Liner paper 3 Corrugated paper 4 Back liner paper 5 Double-sided corrugated cardboard 10 Glue part 20 Bucker part 22 Belt conveyor (canvas belt) 25 Heating board 26 Main body 26A Upper plate part (plate part on the back liner paper side) 27 Heat radiation Surface 28 Wavy heat receiving surface 29 Space 30 Steam supply unit 31 Drain discharge unit 35 Steel belt 38 Air bag A Steam B Drain

Claims (1)

[Claims] 1. A hot platen for heating the back liner paper is provided in a backer portion for bonding the back liner paper to the corrugated surface of the single-sided cardboard, and the main body of the hot platen is formed in a box shape. In the plate portion on the liner paper side, a heat radiation surface is formed by the outer surface and a heat receiving surface is formed by the inner surface, and the heat receiving surface has a larger area than the heat radiation surface. Double-sided machine for corrugated machine.