JPH0346867Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a side seal used, for example, to adjust the coating width of a short dwell coater.

(Prior art) What is a short dwell coater?
As shown in the figure, this is a type of coater that directly discharges a coating liquid onto a base paper 11 supported by a backing roll 10, and immediately scrapes off the excess coating liquid with a blade 12.

In order to adjust the coating width on the base paper 11, side seals 1' are provided on the operation side and the drive side, respectively, as shown in FIG. The side seal 1' is fixed on a seal bar 6 for adjusting the discharge width of the coating liquid, and the seal bar 6 is slidable in the paper width direction. By pushing and pulling the seal bar 6, the side seal 1' is positioned.
The coating width is adjusted.

As shown in FIGS. 7 and 8, the conventional side seal 1' is made of a sponge (neoprene single foam sponge) having a trapezoidal cross section. In this case, if the upper surface of the side seal 1' comes into contact with the backing roll 10 surface or the base paper 11 surface running at high speed, there is a risk that the side seal 1' will be torn into pieces or taken away due to friction. Therefore, conventionally, as shown in FIGS. 8 and 9, a shim 13 made of a brass or stainless steel plate with a thickness of 0.2 to 0.3 mm is provided from the rear of the side seal 1' in the feeding direction of the base paper 11 toward the top surface of the side seal. The upper surface of the side seal 1' was covered with a shim 13, and water was supplied to the upper surface of the shim by a shower 14 for lubrication and prevention of wear. The shim 13 and shower 14 must be moved in the paper width direction (left and right) in synchronization with the movement of the side seal 1', and must be adjusted in the vertical direction independently thereof.

By the way, in order to avoid interference with the bucking roll 10, the attachment parts of the shim 13 and the shower 14 must be placed at a considerable distance from the blade 12, and the length of the shim 13 is approximately 300 to 400 mm. Become.

Therefore, even if it is attempted to adjust the shim 13 to the left or right according to the movement of the side seal 1', the shim tip position cannot be accurately controlled by the deflection or distortion of the shim 13, as shown in FIGS. 10 and 11. I can't. At the same time, the shower water does not spread well to the contact surface between the shim 13 and the backing roll 10 (or base paper 11), and the shim 13 receives dry friction, which increases the wear of the shim 13. This can also cause damage to the paper surface.

In addition, it is necessary to completely cover the upper surface of the side seal 1' with the shim 13, and the shim 13 must be adjusted vertically so that the tip of the blade 12 matches the tip of the shim 13, as shown in FIG. However, it is actually extremely difficult from a technical and operability standpoint. If the shim 13 comes to the top of the tip of the blade 12 as shown in FIG. 13, it will have an adverse effect on the blade 12, and a gap may be created between the tip of the shim and the tip of the blade as shown in FIG. , the exposed sponge surface is scraped off.

In addition to the above-mentioned problems, the shim 13 and shower 10 are provided separately from the side seal 1', and a mechanism for moving and adjusting them is required, which increases the number of parts and requires less space. As a result, the operability of the machine becomes even worse.

(Problems to be solved by the invention) As described above, in the case of the conventional short dwell coater, the side seal, shim, and shower were placed separately in the side seal section for adjusting the coating width, which resulted in problems. In order to avoid interference with the rolls, it is necessary to install the shims and showerers away from the side seals.As a result, the lubricant from the showerers is not well distributed, causing wear of the side seals, buckling roll surfaces (or This caused damage to the paper (original paper surface). In addition, it is necessary to move and adjust the shim and shower in order to match the movement of the side seal or to align the shim accurately with the side seal surface, but since the shim is a thin plate and has a long shape, this adjustment is difficult. In addition, the number of instruments for adjustment has increased, creating problems in terms of operability and space.

(Means for solving the problem) For this reason, the present invention provides a side seal in a coater that regulates the discharge width of the coating liquid, and a corrosion-resistant and abrasion-resistant thin plate is provided at least on the side facing the backing roll of the side seal body. In order to solve the above-mentioned problem, the side seal body is integrally attached, and a fluid passage is provided through the inside of the side seal body to lubricate the thin plate surface.

(Function) By combining the functions of the conventional side seal, shim, and shower into one, and integrating the shim into the side seal, the side seal part becomes compact and simple, and its operability is further improved. To make it possible to accurately and easily control the position of a side seal.

Moreover, since the lubricating fluid can be directly supplied to the contact portion, even if the supply amount is reduced, it is sufficiently distributed over the entire contact surface.

Furthermore, by applying a wear-resistant treatment such as ceramic plating to the upper surface of the shim, it is possible to extend the life of the shim.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

As mentioned above, the present invention relates to a compact and simple side seal with an integrated lubrication mechanism that has the functions of a conventional sponge side seal, shim, and shower.

1 to 3 show a side seal according to the present invention, and the side seal mainly consists of a side seal main body 1 consisting of two types of hard and soft seal members 1a and 1b.
, a shim 2 integrally attached from the surface facing the backing roll surface to the bottom surface, and a supply pipe 3 for supplying lubricating fluid.

Of the sealing members 1a and 1b, the sealing member 1a located at the top in FIG. is used.

The sealing member 1a having excellent elasticity and flexibility has an isosceles triangular cross section, and forms a partial cross section of the side seal body 1 having a trapezoidal cross section, and the remaining cross section has the above liquid tightness and rigidity. The seal member 1b is made of a superior material.

The sealing member 1a is made of, for example, neoprene single-cell sponge, and since it is a part that comes into direct contact with the blade, it is made of soft sponge so as not to hinder the deflection of the blade. Further, one seal member 1b is made of liquid-tight synthetic rubber, supports the supply pipe 3 reliably, and has a plurality of passage holes for connecting the supply pipe 3 and the shim 2 formed therein.

The supply pipe 3 is a stainless steel pipe in this embodiment,
It has the function of supplying lubricating fluid through the inside, and also has the role of an arm that fixedly supports the seal bar 6 and the side seal 1 via the holder 5, as shown in FIGS. 4 and 5.

The solid supply pipe 3 is fixed to the sealing member 1b in the lower part by passing through the seal member 1b in the width direction, and a plurality of holes 3' communicate with, for example, a water spouting part of the supply pipe, and the other end of the hole is connected to the side seal body 1. It leads to the surface of the shim 2, which is integrated with the surface.

The shim 2 is made of, for example, a stainless steel plate with a thickness of approximately 0.1 to 0.5 mm, and is fixed so as to cover the backing roll side surface and lower surface of the side seal body 1. The hole 3' is opened on the surface that comes into contact with the bucking roll, and the hole 3' is opened at a depth of about half the thickness of the shim 2 so that the lubricating fluid is evenly distributed over the surface of the shim 2. A groove 4 is carved.

In the illustrated example, the surface of the shim 2 is further plated with ceramic to improve wear resistance.

Although water is taken as an example of the lubricating fluid, the lubricating fluid is not limited to liquid, and for example, air itself may be used. Furthermore, in order to improve the above-mentioned wear resistance, it is also possible to employ, in addition to ceramics, for example, a tetrafluoride resin or ionic nitride, which has high wear resistance.

(Effects of the invention) As explained above in detail, the present invention eliminates the <side seal>, <shim>, and <lubrication mechanism>, which have conventionally been separate parts and have had problems in terms of space, mechanism, and function. By integrating, a simple and compact side seal can be obtained, and
Adjustment in the paper width direction is easy and accurate, and vertical adjustment is no longer necessary. Especially when applying ceramic plating to the shim surface, the effect and reliable lubrication combine to extend the life of the side seal shim. can be significantly extended.

[Brief explanation of drawings]

Figure 1 is a sectional view of a side seal showing an embodiment of the present invention, Figure 2 is a front view of the same, and Figure 3 is A of Figure 1.
-A sectional view, Figure 4 is a front view of the side seal installed on the seal bar, Figure 5 is the same sectional view, and Figure 6 is the front view of the side seal installed on the seal bar.
The figure is a cross-sectional view of the main parts of the short dwell coater.
8 is a sectional view of the main part of the conventional coater, FIG. 9 is a perspective view of the conventional side seal and shim section, FIG. 10 is a side view showing the deflected state of the shim section, and FIG. FIG. 11 is a front view showing the distorted state of the shim portion when adjusting it horizontally, and FIGS. 12 to 14 are cross-sectional views illustrating each state when adjusting the shim in the vertical direction. Explanation of the main parts of the figure, 1...Side seal body, 1a, 1b...Seal member, 2...Shim,
3... Supply pipe, 3'... Hole, 4... Groove.

Claims (1)

[Scope of utility model registration request] In a side seal in a coater that regulates the discharge width of the coating liquid, a corrosion-resistant and wear-resistant thin plate is integrally attached to at least the surface facing the backing roll of the side seal body, and the A coater side seal characterized by providing a fluid passage for lubricating the surface of a thin plate.