JPH04305443A - Single facer - Google Patents

Abstract

PURPOSE:To prevent the noise or vibration generated in a conventional corrugated roll and a press roll by employing a belt pressure system and changing the layout of the corrugated roll and a belt. CONSTITUTION:In a belt pressing type single facer wherein an endless belt 8 running while wound round two or more sets of rolls so as to be adjacent to corrugated rolls is provided and the core paper 3 delivered in a corrugated shape by upper and lower corrugated rolls 1, 2 and the liner 5 allowed to meet with said paper 3 through a separate route are pressed and grasped between the endless belt 8 and the corrugated roll 1 to be laminated through the paste 9 transferred and supplied to the apexes of the corrugations of the core paper, the endless belt 8 being the press means of a single-sided corrugated board sheet 6 is arranged on the upper side of the mutually meshed upper and lower corrugated rolls 1, 2 and the meshing points of the upper and lower corrugated rolls 1, 2 are arranged at a lower position.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single facer that employs a belt pressing method as a pressing means during lamination and is proposed for the layout of upper and lower rolls and endless belts for corrugated processing.

0002

[Prior Art] Figures 3 to 7 are explanatory diagrams of the configuration and functions of a conventionally known general single facer (single-sided corrugated board manufacturing machine), with Figure 3 illustrating a roll pressure type and Figure 7 illustrating a belt pressure type. are doing. Note that FIGS. 5 and 6 are explanatory diagrams of defects in the roll pressure type single facer. As shown in FIG. 3, the most common known single facer for corrugating machines includes an upper roll 1 and a lower roll 2 that meshes with the upper roll 1 to form the core paper 3 into a wave shape.
, a pressure roll 7 and an upper stage for producing a single-sided corrugated cardboard sheet 6 by pasting the core paper 3 and liner 5 pasted together while applying pressure to the lower roll 2;
Gluing roll unit 4 that transfers and supplies glue 9 to the corrugated top of the core paper 3 formed by being held between the lower rolls 1 and 2.
It is composed of etc.

By the way, when bonding the core paper 3 and the liner 5 through the glue 9 transferred to the top of the corrugated steps, it is necessary to apply an appropriate pressure force and heat the glue 9. The corrugated cardboard sheet manufacturing machine) includes the rolls 1, 2,
A device that can introduce steam or oil into the interior of 7 and set the temperature to a high temperature is incorporated.

Next, the structures of the upper roll 1 and the lower roll 2 will be briefly explained. The lower roll 2 is a frame 10
It is pivotally supported in a fixed position via a bearing (not shown) held between the bracket 11 and the bracket 11 . On the other hand, the upper roll 1 has an arm 1 that swings around a fulcrum pin 12 via a bearing.
The other end of the arm 13 is connected via a pin 14 to a pressure cylinder 15 swingably attached to the bracket 11. Therefore, the pressurized cylinder 15
By telescopically operating the upper and lower rolls 1 and 2, you can attach and detach them (
The contact pressure between both rolls 1 and 2 can be adjusted arbitrarily by changing the hydraulic pressure of the cylinder 15.

However, this type of roller still has the following problems regarding the engagement between the lower roll 2 and the pressure roll 7. In other words, as shown in Figures 5 and 6, the chevron-shaped teeth of the conventional upper and lower rolls 1 and 2 are linear teeth carved on the roll circumferential surface parallel to the roll axis, and the meshing state is parallel to the axis. Line contact. Since the pressure roll 7 that applies a pressing force to the linear teeth is a perfectly circular roll, it is in the state shown in FIG. 6 at the engagement point with the lower roll 2. In addition,
The solid line in FIG. 6 shows the case of engagement with two chevron-shaped teeth, and the dashed line in the same figure shows the case of contact with the top of one chevron-shaped tooth.

[0006]

[Problem to be Solved by the Invention] As described above, the engagement state of both rolls alternates between the solid line and the one-dot chain line due to the relative rotation of the lower roll 2 and the pressure roll 7. The distance between the axes will always vary within the maximum S dimension. Therefore, for this reason, vibrations and noise caused by the vibrations are generated in the rolls 1, 2, and 7.
In extreme cases, such as when using poor-quality base paper, paper breaks (tears) may occur due to impact and vibration between the rolls, and due to these defects, the strength and other quality of the corrugated board sheet 6 may deteriorate. It was inevitable. Note that FIG. 4 shows an example of a roll arrangement that has been recently adopted, and the upper and lower rolls 1 and 2, the gluing roll section 4, and the pressure roll 7 each function in the same manner as in the previous example.

However, in the conventional example, due to the structure in which the engagement point between the pressure roll 7 and the corrugating roll 1, which is the largest source of vibration and noise, is located upward, the vibration and noise of the entire device are not as high as those shown in the figure. It had the disadvantage that it was rather larger than the example 4. In view of this drawback, a type shown in FIG. 7 has recently been proposed in Japanese Utility Model Application Publication No. 52-168769. The device shown in FIG. 7 is equipped with an endless belt 8 and a radio wave transmitting device 16 that is close to the inside or outside of the endless belt 8 and can be set to a predetermined frequency. The radio wave transmitting device 16 functions to apply the electric field of the device to gel the starch paste, thereby promoting adhesion, and also to dry the single-sided corrugated sheet 6 during travel.

[0008] In other words, the conventional belt pressure type single facer cannot apply the necessary pressure to bond the core paper 3 and liner 5 due to the performance (rupture resistance) of the belt 8. Together with the auxiliary function of the radio wave transmitter 16,
It was the first time that a single facer function could be obtained. Therefore, although vibration and noise, which were the biggest drawbacks of the pressure roll method, were reduced, a rise in the cost of manufacturing a single-sided corrugated board production machine was unavoidable. Furthermore, research on vibration, noise, etc. is insufficient; for example, in the example shown in Fig. 7, the meshing point of the upper and lower rolls 1 and 2, which is the source of vibration in the belt pressurization method, is located on the upper side of the device, and the entire device The structure was not ideal for reducing vibration and noise. The vibration (noise) of the single facer not only causes a decrease in the strength of the single-sided corrugated board sheet 6 and a decrease in product quality, but also becomes a major factor in deteriorating the working environment such as noise in the factory.

As mentioned above, there are various types of arrangement of the upper and lower rolls and pressure means of a single facer, and there are also various types of pressure required when laminating the core paper and liner that have been rolled up in stages. As for means for applying pressure, pressure roll types, pressure belt types, etc. have been proposed and put into practical use, but noise and vibration generated by the engaging upper roll and lower roll, or the same roll and the pressing means have been proposed and put into practical use. There was no particular consideration given to these matters. The present invention aims to provide a single facer that reduces the conventional noise, vibration, etc., improves the quality of corrugated cardboard sheets, and improves the working environment.

0010

[Means for Solving the Problem] Therefore, the present invention provides an endless belt that runs adjacent to a corrugated roll by winding a plurality of sets of rolls, and has a core corrugated in a corrugated manner by an upper roll and a lower roll. A belt processing method in which the paper and the liner, which have merged through separate routes, are pressed and clamped between the endless belt and the corrugated rolls, and the paper and the liner are bonded together via the glue transferred and supplied to the top of the corrugated corrugations of the core paper. In the press-type single facer, the endless belt, which is a means for pressing the single-sided corrugated sheet, is disposed above the upper and lower rolls that mesh with each other, and the meshing point of the upper and lower rolls is located at a low position. This is a means to solve problems.

[0011]

[Operation] The present invention focuses on, firstly, the engagement between the corrugating roll and the pressure roll, and secondly, the engagement between the upper and lower corrugating rolls, as the main elements of vibration and noise generation sources in a single facer. A belt pressure system was used instead of a pressure roll. By adopting this belt pressure method, vibration and
The pressure roll, which was the biggest source of noise, can be omitted, and the vibration and noise generation part caused by the engagement of the upper and lower rolls is placed below the equipment, reducing the impact on the equipment as a whole. Significant improvements can be made in the deficiencies.

0012

[Embodiments] The present invention will be explained below with reference to the drawings. Figs. 1 and 2 show embodiments of the present invention. Fig. 1 is a dedicated flute type, and Fig. 2 is a variable flute type compatible with two types of flutes. The following is an example. The present invention aims to reduce the vibration of the device, which was a drawback of the conventional type, and the noise generated in connection with this vibration.
The same parts as in FIGS. 3 to 7 will be described using the same reference numerals. The single facer of the present invention includes known upper and lower rolls 1 and 2 as shown in FIG.
It has a gluing device 4 that transfers and supplies glue 9 to the top of the step of the core paper 3 formed (step-rolled) by the rotation of the clamp, and merges the liner 5 and the core paper 3 that have been carried in through another route. , has the basic configuration and function as a single facer that manufactures a single-sided corrugated cardboard sheet 6 by laminating with a predetermined pressing force applied.

Now, in the present invention, as a means for obtaining the necessary pressing force in bonding the core paper 3 and the liner 5, instead of using the known pressure roll 7, the tension of an endless belt 8 adjacent to the corrugating roll is used. It employs only pressure, and it has a distinctive feature that should be emphasized in the arrangement method in which the pressure means (endless belt 8) is positioned above a pair of meshed upper and lower rolls 1 and 2. Furthermore, by locating the meshing point of the upper roll 1 and the lower roll 2, which are the biggest source of vibration and noise in the belt pressure single facer that does not use the conventional pressure roll 7, at the lower part of the machine, the overall system This design was designed to reduce as much as possible the negative effects of vibrations, etc. Note that the vibration generated at the engagement point between the endless belt 8 as a pressure means and the upper roll 1 via the single-sided corrugated sheet 6 is slightly smaller than the vibration generated at the engagement point between the upper and lower rolls 1 and 2. amount,
The roll layout of the present invention can be expected to significantly reduce machine vibrations, noise, etc., which have been problems in the past.

[0014]

Effects of the Invention As explained in detail above, the present invention employs a belt pressure system in place of the pressure roll, which was the biggest source of vibration and noise in conventional single facers, reducing vibration and noise. In addition, by positioning the pressure belt above, the meshing point of the upper roll and lower roll, which was the second source of generation, can be placed below the device. The generation of vibrations and related noise can be reduced as much as possible. Therefore, according to the present invention, it is possible to eliminate problems such as paper breakage of the base paper and decrease in sheet strength, improve the quality of the product (single-sided corrugated cardboard sheet), and achieve various advantages such as improving machine durability and working environment. It has the following effects.

[Brief explanation of drawings]

FIG. 1 is a side view of a single facer (dedicated flute type) showing an embodiment of the present invention.

FIG. 2 is a single facer (
FIG. 2 is a side view of a general-purpose type that can handle two types of flutes with one device.

FIG. 3 is a side sectional view of a conventional single facer.

FIG. 4 is a side view of a conventional single facer with a different roll arrangement from FIG. 3;

FIG. 5 is a front view of the upper and lower rolls shown in FIG. 3;

FIG. 6 is a detailed explanatory diagram of the R section in FIG. 3;

7 is a side sectional view of a conventional single facer different from FIGS. 3 and 4. FIG.

[Explanation of symbols]

1 Upper roll 2 Lower roll 3 Core paper 4 Gluing device 5 Raina 6 Single-sided cardboard sheet 8 Endless belt 9 Glue 10 Frame

Claims (1)

[Claims] [Claim 1] An endless belt is provided that runs adjacent to the corrugating rolls by winding a plurality of sets of rolls, and the core paper that has been corrugated in corrugated form by the upper and lower rolls is joined through a separate route. In the belt pressure type single facer, the liner is pressed and held between the endless belt and the corrugated rolls, and the liner is bonded to the corrugated corrugated top portion of the core paper via glue transferred and supplied. A single facer characterized in that the endless belt serving as a pressing means is disposed above upper and lower rolls that mesh with each other, and the meshing point of the upper and lower rolls is located at a low position.