JPH03189039A - Method and device for manufacturing rod for coating device - Google Patents

Abstract

PURPOSE:To manufacture the rods whose application quantity is different by a single die by using two form rolling dies whose surface shapes are different from each other, in the case a spiral continuous groove is formed on the surface of the rod between two form rolling dies. CONSTITUTION:A rod stock 2 is pushed in forcibly between two form rolling dies 1, 4, and while being driven by a rotation by the form rolling die, a spiral continuous groove is formed on the surface of a rod. In this case, in order to increase the application quantity, a distance l between a form rolling grooved die 1 and a smoothing die 4 is decreased, and a deep is notched in the rod. On the contrary, at the time of decreasing the application quantity, the rod of a shallow groove is made by increasing and separating the distance between the grooved die 1 and the smoothing die 4. Accordingly, the rods whose application quantity is different can be manufactured by one set of dies, and also, since one of them is a smoothing die, a pitch aligning work executed before form rolling can be omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for manufacturing a rod for a coating device used in a device for coating a continuously running strip-shaped support (hereinafter referred to as a "web") with a coating liquid. .

C. Prior Art] Various devices have been proposed as devices for applying a coating liquid to a continuously running web.

In general, the coating process consists of a part that transfers the coating liquid to the web (hereinafter referred to as the "application system") and a part that measures the coating liquid transferred to the web to the desired coating amount (hereinafter referred to as the "application system").
The application methods were classified based on the differences in the application system and the measurement system.Based on the difference in the application system, the application methods were classified into the roller application method, dip application method, and fountain application method. air knife coating method,
A blade coating method, a rod coating method, etc. are known. Furthermore, extrusion coating methods, bead coating methods, and curtain coating methods are known as methods in which application and measurement are performed in the same part.

Among these coating methods, the rod coating method transfers excess coating liquid to the web and then scrapes off the excess coating liquid with a stationary or rotating rod to achieve the desired coating amount, and requires simple equipment. It is widely used because it has the characteristic of being able to apply a thin layer at high speed by operation. Any application method can be used in the rod coating method, but roller coating and kiss coating are most commonly used to take advantage of their simplicity.

However, in the conventional rod coating method, the application system and metering system were completely independent, so it was necessary to set conditions for each separately during coating, which was not only complicated but also required a large amount of space. However, the disadvantage was that the use of space was uneconomical.

Japanese Patent Publication No. 52-36529 discloses a coating method in which a physical space is mechanically created in a wire-wound rod coating section using a wire coating body, a heat-resistant filler, and a thin guide plate, and a draft-shaped liquid pool is formed there. On the other hand, Japanese Patent Application Laid-Open No. 53-22543 discloses a coating method in which the coating liquid is supplied so that a pool of liquid is formed immediately before the contact portion between the rod and the web, and the coating liquid is applied by the rod. has been proposed and is used as an improved coating method that is easy to operate, does not require a large amount of space, and can form a coating film with excellent surface properties.

There are three types of rods for coating equipment used in the rod coating method.
■ Rod material with a smooth surface, ■
Either a rod material with wire wrapped around it or a rod material with grooves cut into it are used, but in most cases a rod for coating equipment is used, which is a rod material with wire wrapped around it.

The rod for coating equipment wrapped with wire is Hontonol 14.
It has been used to coat cloth and other materials that require a relatively large amount of coating.

The diameter of the wire used is 0.08 to 1.52 mm, and generally 0.08 to 0.52 mm. 6411 [Many of them are Ill.

The amount of coating can be changed depending on the thickness of this wire.

Furthermore, there are several methods for digging grooves in the rod material, one of which is forming grooves by rolling. In this case, the amount of coating can be adjusted by changing the groove shape of the rolling die.

(Japanese Utility Model Publication No. 1-65671) In order to manufacture a rod for coating equipment by rolling, if two dies are used in combination as shown in Fig. 3, the surfaces of the two rolling dies are , is the same as the groove shape on the rod surface, and has a convex portion of the groove on the rod surface (section A in Fig. 4).
This was achieved by carving a groove in which the groove and the recess (section B in Fig. 4) were opposite to each other.

(Problem to be Solved by the Invention) However, in the above manufacturing method, when manufacturing a rod for a coating device with a changed coating amount, it is necessary to change the shape of the groove carved on the surface of the rolling die. , each time the die had to be replaced or reworked.

In addition, in the above manufacturing method, when rolling is performed using two dies each having a groove carved on the surface of the rolling die, it is necessary to perform pinch alignment. This was difficult and time consuming.

Hereinafter, pitch adjustment will be explained using FIG. 5. FIG. 5 is a side view (a) showing the relationship between the rolling grooved die 1 and the rod material 2, and a plan view (b) taken along the EE' cross section. ), the two right and left grooved dies 1 rotate in the direction of the arrow, thereby causing the rod material 2 to rotate in the direction of the arrow. At any given time, the protrusion on the rod surface at point 01 moves to point 02 by rotating by 180°C.

At this time, if the convex portions formed on the surface of the rod material do not match the concave portions carved on the surface of the rolling die, the groove shape carved on the surface of the rolling die cannot be accurately carved on the rod surface.

In other words, pitch alignment is the work of adjusting the axial mounting positions of the left and right dies in order to accurately transfer the groove shape carved on the die surface to the rod surface.

The purpose of the present invention is to solve the above-mentioned problems, to make it possible to manufacture rods for coating equipment with different coating amounts using a single die, and to eliminate the need for die pitch adjustment, thereby eliminating the need for preparatory work before rolling. An object of the present invention is to provide a method and apparatus for manufacturing a rod for a coating device, which can significantly shorten the length of time.

[Means to solve the problem]

The above objects of the present invention are as follows: (1) A coating process in which a rod material is forcibly pushed between two rolling dies and a continuous spiral groove is formed on the rod surface without being rotated by the rolling dies. A method for manufacturing a rod for a coating device, characterized in that the two rolling dies have different surface shapes.

(2) In a manufacturing device for a rod for a coating device having two rolling dies, one of the rolling dies is a die with grooves carved on the rolling surface, and the rolling die of the other rolling die is a die with grooves carved on the rolling surface. A manufacturing device for a rod for a coating device, which is characterized by a smooth surface.

achieved by

[For production]

The present invention provides a method for manufacturing a rod for a coating device, in which a rod material is forcibly pushed between two rolling dies, and a continuous spiral groove is formed on the rod surface while being rotated by the rolling dies. By using a die in which one of the rolling dies has a smooth surface, the shape of the groove formed on the rod surface is adjusted by adjusting the shape of the groove formed on the surface of the other rolling die. As shown in the figure, in order to increase the amount of coating, the distance l between the rolling groove die 1 and the smooth die 4 is reduced to carve deep grooves into the rod, and conversely, to decrease the amount of coating By increasing the distance l between the grooved die l and the smooth die 4 and separating them, adjustment can be made in the direction of creating a rod with shallow grooves.

Therefore, it is possible to manufacture rods with different coating amounts using one set of dies, and since one of the dies is a smooth die, pitch adjustment work performed before rolling can be omitted.

〔Example〕

Using a 5US304 round bar with a rod diameter of 10 φ before rolling, a die (p
= 0.15 mm, h = 0.05 mm) and a die with a smooth rolling surface, the rolling process was performed using the method shown in Figure 1. As a result, the surface grooves as shown in Figure 2 were formed. A rod for a coating device having a shape was obtained. In addition, by adjusting the interval between the rolling grooved die and the smooth die, the groove depth d on the surface of the rod for the coating device can be made from 0.005 to 0.005.
I was able to change it to 03m.

As a result of coating using the rod processed as in 2, the coating amount could be varied from 3 to 1 lcc/rrr.
Good coating quality was obtained with a uniform coating amount over the entire surface of the web, as well as in the width and length directions.

〔Effect of the invention〕

By the method and device for manufacturing rods for coating equipment of the present invention,
It is now possible to freely manufacture rods with different coating amounts using one set of dies, and there is no longer a need for pinching before rolling, making it possible to significantly shorten the preparation work. In addition, the rod for the coating device can be manufactured easily, and costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a partial plan view of a device for rolling by combining a die with grooves on its surface and a die with a smooth surface according to the present invention;
Fig. 2 is a partially enlarged view of the groove shape on the surface of a rod for a coating device processed by the manufacturing method of the present invention shown in Fig. 1, and Fig. 3 is an assembly of two conventional rolling grooved dies. Fig. 4 is a front view of a conventional rolling rod for coating equipment, and Fig. 5 shows the relationship between a conventional rolling grooved die and the rod. Side view (a
), a plan view (b) in the EE' cross section, and FIG. 6 are partially enlarged views of the surface groove shape of the die having grooves carved on the surface. ■... Rolling grooved die 2... Rod material (rod) 3... Holder is base 4... Smooth die A... Convex part B... Concave part C, C... Any peak on the rod convex part d...Groove depth on the rod surface h...Groove depth on the die surface Distance between two dies/Groove pitch on the die surface

Claims (2)

[Claims] (1) In a method of manufacturing a rod for a coating device, the rod material is forcibly pushed between two rolling dies, and a continuous spiral groove is formed on the rod surface while being rotated by the rolling dies. A method for manufacturing a rod for a coating device, characterized in that the two rolling dies have different surface shapes. (2) In a manufacturing device for a rod for a coating device having two rolling dies, one of the rolling dies is a die with grooves carved on the rolling surface, and the rolling die of the other rolling die is a die with grooves carved on the rolling surface. A manufacturing device for a rod for a coating device, which is characterized by a smooth surface.