JPH0667020U - Single facer - Google Patents

Abstract

(57) [Summary] [Purpose] To suppress the generation of vibration and noise from the single facer that forms single-faced corrugated board. [Structure] A plurality of press rolls 4 and 5 are brought into pressure contact with a lower roll 2 that rolls a middle shin paper a in a wave shape with an upper roll 1. The liner b is pressed against and joined to the broth paper a which is rolled by the press rolls 4 and 5 and glued,
As the number of press rolls is increased, the pressure contact force of the press rolls with respect to the lower roll 2 is reduced to suppress the generation of vibration and noise.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a single facer for forming a single-faced cardboard.

[0002]

[Prior art]

 The single facer has a corrugated paper inserted between a pair of corrugated rolls, rolled up in a wavy pattern, glued to the top of the corrugated roll, and then a liner guided by a press roll is attached to form a single-sided corrugated ball. is doing.

In the above-mentioned single facer, the press roll is extremely high in contact pressure with the corrugated roll in order to firmly bond the step-molded core paper and the liner and to give a transfer force to the single-faced corrugated board. I'm pressing it.

Therefore, there is a problem in that the corrugations of the corrugated rolls and the press rolls are in violent contact with each other via the paper, and vibration and noise are large.

In order to solve such a problem, the single facer shown in FIG. 3 has already been proposed. In this single facer, a part of a belt 15 stretched between a pair of rollers 13 and 14 is brought into contact with a lower roll 12 that rolls a middle shin paper a in a wave shape with an upper roll 11, and the belt 15 causes the liner b to roll. The liner b is bonded to the middle shin liner a glued to the top of the step by the glue roll 16 by guiding the movement of the liner b.

In the above single facer, since the contact range between the rolled-up middle shin paper a and the liner b can be made long, the pressing force of the liner b against the rolled middle shin paper a is reduced. It is possible to reduce vibration and noise.

[0007]

[Problems to be solved by the device]

 By the way, in the above single facer, since the belt 15 rotates in contact with the pair of rollers 13 and 14 and the liner b, it is easily worn and requires frequent replacement. Further, the belt 15 meanders due to uneven stretching of the belt 15. Further, when the pair of rollers 13 and 14 for guiding the movement of the belt 15 are heated, the belt 15 is stretched and the pressing force for pressing the liner b against the core paper a is reduced, and the bond between the core paper a and the liner b is reduced. Since the force becomes weak, the liner b cannot be heated. For this reason, there is a problem that the joint force between the inner shin paper a and the liner b is weak.

An object of the present invention is to solve the above-mentioned problems of the related art and to provide a single facer in which generation of vibration and noise is small, and a liner can be firmly joined to a stacked core paper. Is.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in this invention, a structure is adopted in which a plurality of press rolls are pressed against the corrugated rolls to press the liner against the core paper after laminating to bond them together.

Here, among the plurality of press rolls, the peripheral speed of the press roll located on the downstream side is made faster than the peripheral speed of the press roll located on the upstream side in the liner transfer direction so as to be positioned between the press rolls of the liner. It is also possible to apply tension to the portion to be contacted so as to increase the contact pressure between the lined core paper and the liner.

Further, an elastic layer may be provided on the outer circumference of each of the plurality of press rolls so that the steps of the corrugation rolls buffer the impact force when the press rolls are struck.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, the middle shin paper a is rolled up in a wave shape when passing between the upper roll 1 and the lower roll 2. The rolled inner core paper a is held by the lower roll 2 and conveyed in the circumferential direction, and is glued to the top of the stage by contact with the glue roll 3.

Around the lower roll 2, a first press roll 4 and a second press roll 5 are provided downstream of the glue roll 3. Each of the press rolls 4 and 5 is pressed against the lower roll 2.

The press rolls 4 and 5 are hollow and are heated to a predetermined temperature by supplying steam or the like.

The liner b is guided by the first press roll 4 and the second press roll 5, and is pressed and stuck to the center cinnamon paper a which is stepped by the pressing force of each press roll 4, 5. At this time, since the first press roll 4 and the second press roll 5 are heated to a predetermined temperature, the liner b is heated by the contact with the press rolls 4 and 5, so that the middle fold paper a is It is effectively joined to each other. The single-faced corrugated board A is formed by the joining.

As described above, the number of press rolls 4 and 5 is two, and the liner b is pressed against the core paper a that has been rolled by the press rolls 4 and 5, whereby the liner can be pressed by one press roll. Compared with the case of pressing, the pressing force of pressing the liner b against the core paper a can be reduced to about 1/2, and the reduction of the pressing force can suppress the generation of vibration and noise.

Here, the peripheral speeds of the first press roll 4 and the second press roll 5 are made substantially equal to the peripheral speed of the lower roll 2. Alternatively, the peripheral speed of the lower roll 2 located downstream may be slightly higher than the peripheral speed of the first press roll 4 located upstream in the liner transfer direction.

As described above, when the peripheral speeds of the first press roll 4 and the second press roll 5 are made different, tension is applied to the liner b between the first press roll 4 and the second press roll 5. The liner b is also pressed against the center fold paper a in the first press roll 4 and the second press roll 5. Therefore, the liner b can be more firmly joined to the middle shin paper a, and if the joining force is constant, the pressure contact force of the first press roll 4 and the second press roll 5 with respect to the lower roll 2 can be obtained. On the contrary, it is possible to reduce the vibration and noise.

As shown in FIG. 2, when elastic layers 6 such as rubber are provided on the outer peripheries of the first press roll 4 and the second press roll 5, the step ridges of the lower roll 2 are changed to the first press roll 4 and the second press roll 4. Since the impact of tapping the press roll 5 can be absorbed by the elastic deformation of the elastic layer 6, the generation of vibration and noise can be suppressed more effectively.

In the embodiment, the number of press rolls is two, but two or more press rolls may be provided.

[0022]

[Effect of device]

 As described above, in the single facer according to the present invention, since the number of press rolls that press the liner against the stacked core paper is set to plural, the liner is pressed against the core paper with one press roll. Compared with the case, the pressure contact force of the press roll with respect to the corrugated roll can be reduced, and the effect of reducing vibration and noise can be achieved.

Further, when the liner is strongly pressed against the inner shin paper, the glue infiltrates on the surface side of the liner and the glue lines appear, but since the press contact force of the press roll can be reduced, the glue lines are not generated. The number of single-faced corrugated boards can be reduced and the appearance can be improved.

Furthermore, since the peripheral speeds of the plurality of press rolls are made different from each other and tension is applied to the liner between the press rolls, the liner between the press rolls can be pressed against the core paper. It is possible to improve the bonding force between the paper and the liner.

Further, by providing the elastic layer on the outer periphery of the press roll, it is possible to absorb the impact force due to the elastic deformation of the elastic layer, so that the generation of rocking and noise can be more effectively suppressed. You can

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a single facer according to the present invention.

FIG. 2 is a sectional view showing another example of the same single facer.

FIG. 3 is a sectional view showing a conventional single facer.

[Explanation of symbols]

 1 Upper Roll 2 Lower Roll 4 1st Press Roll 5 2nd Press Roll 6 Elastic Layer

Front page continuation (72) Inventor Nobuhiro Ishii 2-15-28 Minejima, Nishiyodogawa-ku, Osaka City Hamada Printing Machinery Co., Ltd. (72) Eiji Onuma 2-15-28 Minejima, Nishiyodogawa-ku, Osaka City Hamada Printing Machine Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A liner is attached to a pair of corrugated paper rolls for corrugating the intermediate cinnamon paper and one corrugated roll for transferring the intermediate cinnamon paper after the corrugation, and a liner is attached to the broth paper glued after the corrugation. A single facer comprising a press roll which is pressed and stuck together, wherein a plurality of the press rolls are provided. 2. The single facer according to claim 1, wherein the peripheral speed of a press roll located downstream of the press speed located upstream of the liner transfer direction is set higher than that of the press roll located downstream of the press roll. Facer. 3. The single facer according to claim 1, wherein an elastic layer is provided on the outer circumference of a plurality of press rolls.