JPS593883Y2 - single facer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a single facer for a corrugating machine.

FIG. 1 shows the structure of a conventional general single facer as a side sectional view.

In the figure, 1 is the upper roll, 2 is the lower roll, 3 is the pressure roll, 4 is the glue roll, 5 is the doctor roll, 6 is the glue container, 7 is the glue, 8 is the base paper (core), 9 is the liner , 10 are single-sided corrugated sheets.

In the single facer shown in FIG. 1, a single-sided corrugated cardboard sheet 10 is manufactured through the following steps.

That is, the base paper 8 is supplied to the upper roll 1 side, and is bitten by the meshing portion between the upper roll 1 and the lower roll 2 to form the corrugated base paper 8'.
The top part of the corrugated corrugation is pasted with a gluing roll 4, and the liner 9 supplied to the pressure roll 3 side is laminated at the pressing part of the lower roll 2 and the pressure roll 3, and a single-sided corrugated sheet 10 is formed. Become.

However, in a single facer with such a structure, as shown in FIG. 3, as shown by the dotted line, and this causes displacement of the axial center of δ, and this displacement becomes a periodic excitation force that can cause liner cracking, poor lamination, or the main cause of noise due to vibration. It was the cause.

As mentioned above, in the conventional single facer, δ
The structure is such that the rigid body vibration energy of the bearing that supports the pressure roll and the pressure roll whose support and pressure device is used as a spring is large, so each roll vibrates violently at the resonance point of the roll system. However, there were problems such as liner cracking or poor bonding.

The present invention was proposed to eliminate the above-mentioned conventional drawbacks, and aims to reduce the axial displacement and the rigid vibration energy of the pressure roll, thereby reducing the excitation force. In addition, the present invention aims to provide a single facer that can prevent liner cracking and poor bonding due to vibration and reduce noise because the vibration response is reduced.

The embodiment of the present invention will be explained below with reference to the drawings. Fig. 2 is a side sectional view of a single facer showing the embodiment of the present invention;
FIG. 3 shows a front view of the same.

In the embodiments shown in FIGS. 2 and 3, the same parts as in FIG. 1 are indicated using the same reference numerals.

The parts in Figures 2 and 3 that differ from Figure 1 are as follows:
11 is a pressure roll, 12 is a pressure cell, 13.14°15
is a bearing, and 16.17 is a pressurizing device.

Now, in the embodiments shown in FIGS. 2 and 3, the conventional pressure roll 3
A pressurizing mechanism is adopted in which a pressurizing cell 12 made of a relatively thin elastic material is fitted into a pressure roll 11 having steps formed on the outer surface with steps having the same pitch as the step pitch of the lower step roll 2.

The pressure roll 11 has unevenness (steps) on its outer surface with the same pitch as the steps of the lower roll 2. Since it is necessary to set the shape in consideration of the amount of displacement or the amount of vibrational displacement, a waveform (for example, a sine wave) having a concavity of several hundred μm to several mm may be used.

On the other hand, the pressure cell 12 has a deformation rigidity smaller than the cross-sectional deformation rigidity of the conventional pressure roll 3, and has a pressure necessary for bonding the corrugated horizontal paper 8' and the liner 9 (for example, a linear pressure of 20 to 50 k
It is necessary to have a cell structure that has a rigidity that can give a

Next, the pressure cell 12 can be mounted on the pressure roll 11 by fitting cells with a roll structure formed by spinning or machining using a method such as press-fitting, or by a known method such as winding a plate material. Can be configured.

Here, to explain the structure of the single facer shown in FIGS. 2 and 3, as shown in FIG.
is rotatably attached to the frame via bearings 13, 14, and 15.

The upper roll 1 is transferred to the lower roll 2 by the pressure device 16.
For example, the pressure roll 11 is pressed with a linear pressure of 20 to 50 kg/Cm, and the pressure roll 11 is pressed against the lower roll 2 by the pressure device 17.
Pressed with the same pressure as above.

That is, the former is for facilitating the molding of the base paper 8, and the latter is for applying the pressure necessary to instantaneously bond the corrugated horizontal paper 8' and the liner 9.

Further, the pressure roll 11 is configured to rotate in synchronization with the circumferential speed of the lower roll 2 at a phase in which the stages of the lower roll 2 are opposed to each other as shown in FIG. 5 between the stages of the pressure roll 11.

Next, to explain the operation, the base paper 8 is fed to the upper roll 1 side, is bitten by the meshing part of the upper roll 1 and the lower roll 2, and is formed into a corrugated horizontal paper 8'. The paper 8' is transferred as the lower roll 2 rotates and is glued to the top of the roll by the gluing roll 4.
The lower roll 2 and pressure roll 1 are placed on the liner 9 supplied to the side.
The single-sided corrugated cardboard sheet 10
becomes.

In this case, the stepped portion of the lower roll 2 presses the middle of the Okayama of the pressure roll 11 via the pressure cell 12, as shown in FIG.

Since the present invention is constructed as explained in detail above,
A bonding effect occurs when the ridges of the lower roll collide with the pressure cells, but since the pressure cells are made of a relatively thin elastic material, when the ridges of the lower roll collide with the pressure cells, the pressure increases. The cells are recessed and exert a buffering effect.

In other words, even if the lower roll collides with the pressure roll, the disadvantage of causing rigid body vibration, which occurs as a displacement of the axis of the pressure roll itself as in the conventional case, is almost eliminated, and the degree of the vibration is greatly reduced. Can be done.

As described above, according to the present invention, the spring force of the pressure cell exerts a buffering effect against the impact during operation, and the displacement of the axis of the pressure roll can be reduced.

Therefore, since the excitation force and vibration force can be reduced, liner cracking and bonding defects caused by vibration can be prevented, and noise can be further reduced.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an example of a conventional single facer, Fig. 2 is a side sectional view of a single facer showing an embodiment of the present invention, Fig. 3 is a front view thereof, and Fig. 4 is a conventional single facer. FIG. 5 is an explanatory diagram showing a bonding state in a single facer according to the present invention. Explanation of the main parts of the figure, 1... Upper roll, 2... Lower roll, 4... Gluing roll, 8... Base paper, 8'.
... Corrugated horizontal paper, 9 ... Liner, 10 ... Single-sided corrugated sheet, 11 ... Pressure roll, 12 ... Pressure cell.

Claims (1)

[Scope of utility model registration request] In a single facer equipped with an upper roll, a lower roll, a pressure roll, a gluing roll, etc., steps having the same pitch as the pitch of the lower roll are formed on the outer peripheral surface of the pressure roll, and are in contact with the top of each step. A pressure cell made of a relatively thin elastic material is fitted therein, and the pressure rolls are synchronized with the circumferential speed of the lower roll at a phase in which the stages of the lower roll are positioned opposite each stage of the pressure rolls. A single facer characterized by rotating the facer.