JPH0248070Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a coating width adjustment device in a coating machine, and in particular, when changing the width of an uncoated area, the elastic body for backing up the wiper is moved or The present invention relates to a coating width adjusting device that can be easily replaced.

(Prior Art) FIGS. 3 and 4 show a coating width adjusting device in a conventional coating machine.

To briefly explain this conventional apparatus, a web 2 that is guided and travels by a backup roll 1 is coated with a coating liquid 3 at a coating section. Most of the applied coating liquid 3 is scraped off by a blade 4, leaving only the amount necessary for producing coated paper, and enters a pan 5.

This coating machine is provided with a wiper 6 and an elastic body 7 for backing up the wiper corresponding to both ends of the web. Create an uncoated area about millimeters in size.

The elastic body 7 is, for example, a sponge having a JIS hardness of 20 to 25 degrees, and is usually adhesively fixed to the blade 4 surface with a double-sided adhesive tape 8.

By the way, in such a conventional coating width adjustment device, when changing the width of the uncoated area, it is necessary to move the elastic body 7, but the elastic body 7 is fixed to the blade 4 with adhesive and double-sided adhesive tape. Because of this, it was almost impossible to move the elastic body, and it took a long time and was too troublesome to replace the elastic body. Furthermore, when changing the type of blade, it is necessary to change the elastic body at the same time, which similarly takes time.

(Problems to be solved by the invention) In this way, with the conventional coating width adjustment device, it is impossible to reuse the elastic body and move its installation position, and it is time-consuming to replace it. It contained problems.

The present invention has been made to solve the above-mentioned problems, and aims to provide a device that allows the elastic body to be reused and allows the elastic body to be moved simply and quickly.

(Means for Solving the Problems) Therefore, the present invention provides a coating width adjustment device that is installed at both ends of a web in a coating machine and is made up of a wiper and an elastic body. The structure is such that the magnet is built into a protruding magnet case, and this is a means of solving the above-mentioned problem.

(Function) The elastic body is housed in the magnetic case while being pierced by the rod-shaped needle. Therefore, the elastic body can be easily removed from and attached to the magnet case. Then, it is sufficient to attach the elastic body to the blade via the magnet case, and the position of the case can be easily changed.

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

1 and 2 show the coating width adjusting device according to this embodiment, in which the free end of the wiper 6 extends along the back-up roll 1 to the blade 4.

The coating section is equipped with an elastic body 7 for preventing side leakage of the coating liquid 3 (leakage of the coating liquid from the side) and backing up the wiper. Elastic body 7
is housed in a magnet case 9 made of a magnetic material and open on two sides. Inside the magnet case 9, there are several rod-shaped needles 10 with sharp tips, which serve to pierce and fix the elastic body 7.

Since the blade 4 itself is a magnetic material, the magnet case 9 is seated on the blade surface simply by placing it in an appropriate position, and is in an attached state.

The coating width adjusting device according to this embodiment having such a configuration has the following effects. The coating liquid 3 discharged from the coating section is directly applied to the web 2 where the wiper 6 is not provided. Coating liquid 3 is applied where wiper 6 is located.
is obstructed by the wiper 6 and the elastic body 7, and is not coated on the web 2, resulting in an uncoated area.

By moving the magnet case 9 containing the elastic body 7 and the wiper 6, an uncoated portion of several millimeters can be created at both ends of the web. Therefore, the position of the elastic body can be easily adjusted, and the width of the uncoated portion can be easily changed.

Moreover, since the elastic body 7 is simply pierced by the rod-shaped needle 10, it is easy to attach and remove it, and the elastic body 7 can be replaced quickly.

(Effects of the invention) As explained above in detail, according to the invention, the elastic body is detachably housed in the magnet case, so when adjusting the coating width, it is sufficient to simply move the magnet case. Furthermore, when changing the type of blade, the elastic body can be easily replaced.

Furthermore, since the elastic body is not damaged even when removed from the magnet case, it is possible to use the used elastic body again.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a coating width adjusting device showing an embodiment of the present invention, Fig. 2 is a front view of the same device as seen from the wiper side, Fig. 3 is a side sectional view of a conventional device, and Fig. 4 is a front view of the same device as seen from the wiper side. Explanation of the main parts of the figure, 2... web, 4... blade, 6... wiper, 7... elastic body, 9... magnet case.

Claims (1)

[Scope of utility model registration request] A coating width adjusting device consisting of a wiper and an elastic body installed corresponding to both ends of a web in a coating machine, characterized in that the elastic body is housed in a magnetic case with a rod-shaped needle protruding inside. Coating width adjustment device.