JPH0622469Y2 - Paint storage device in roller curtain coater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a paint reservoir for a roller curtain coater.

[Conventional technology]

A roller-type curtain flow coating means is already known as a coating technique for steel plates or strips. For example, Japanese Utility Model Laid-Open No. 61-98569 and Japanese Utility Model Laid-Open No. 63-63163 disclose coating means as shown in FIG.

That is, a paint gap 5 is formed by providing a roll gap 3 at a predetermined interval between a rotating coating roll 1 and a doctor roll 2 arranged at a position opposite to the coating roll 1, and the paint is supplied to the paint reservoir 5. The paint 4 is adhered to the surface of the coating roll 1, scraped off by a blade 6 provided in contact with the surface of the coating roll 1, and the curtain 7 is continuously hung to coat 8 the surface of the steel plate S.

[Problems to be solved by the device]

However, in the conventional technique, there is no device corresponding to the so-called side dam in the device forming the paint reservoir 5,
Of the paints supplied to the paint reservoir, except for the paints required for curtain formation, they were discharged from the discharge ports provided on both roll sides. Therefore, the height of the paint in the paint reservoir 5 cannot be adjusted to an optimum position, and when the amount of the paint reservoir changes during the operation process, the paint surface becomes ruffled or foamed, causing air entrapment and curtain breakage. When a coating defect such as the above occurs or the paint height in the paint reservoir changes in the curtain width direction, the thickness in the width direction of the curtain changes, causing a coating defect.

The present invention aims to prevent such coating defects.

[Means for Solving the Problems]

In order to achieve the above object, the present invention proposes a structure of a side weir that constitutes a paint reservoir.

That is, the present invention forms a paint reservoir by a roll gap between a coating roll and a doctor roll, a vertically movable side weir provided in pressure contact with both sides of the both rolls, and a side tray connected to the side weir. It is a thing.

〔Example〕

 Hereinafter, the present invention will be further described with reference to the drawings.

In FIG. 1, a roll gap 3 is formed between a coating roll 1 and a doctor roll 2, and a side tray 9 is provided in contact with the side faces of both rolls to form a paint reservoir 5. The side tray 9 is configured as follows.

That is, the thick portion 11 pressed against the side surfaces of both rolls 1 and 2
With one side and a tapered square tube 14 continuous with the square tube 10.
The side tray 9 is formed by the above, the space portion 12 is provided in the thick portion 11, and the slit 13 is provided along the space portion 12.

The side dam 15 is fitted in the slit 13 so as to be vertically movable, and a fixing bolt 16 is planted so that the side dam 15 can be fixed at a predetermined position. The details are shown in FIG. A guide groove 17 connected to the slit 13 is provided on the front surface of the thick portion 11 in the moving range of the side dam 15, and a groove 18 for fixing the nut 19 is further provided connected to the guide groove 17.

Although the present invention has the above-described configuration, when implementing the present invention, first, the optimum position of the side dam 15 is determined by the coating conditions such as the type of paint and the peripheral speed of the coating roll, and the fixing bolt of the side dam 15 is loosened. After moving the side weir 15 to a predetermined position, it is fixed. Next, paint is poured into the paint reservoir to start the work, but paint unnecessary for curtain formation overflows the side dam 15 and flows down to the side tray 9.
The paint height in the paint reservoir can be constantly maintained at a constant level.

[Effect of device]

In the paint reservoir of the present invention, an appropriate paint height can be obtained, so that air etc. is not taken in and stable curtain formation is possible. Further, since the dance of the paint in the paint reservoir and the change of the height in the width direction of the curtain can be reduced, it is possible to prevent a coating defect such as a change in film thickness.

[Brief description of drawings]

 FIG. 1 is a schematic perspective view of a paint reservoir according to the present invention, FIG. 2 is a partial detailed view of FIG. 1, and FIG. 3 is a schematic side view showing a conventional technique. 1 ... Painting roll, 2 ... Doctor roll, 3 ... Roll gap, 4 ... Paint, 5 ... Paint reservoir, 6 ... Blade, 7 ... Curtain, 8 ... Paint film, 9 ... Side tray , 10 …… Square tube, 11 …… Square tube thick section, 12 …… Space section, 13 …… Slit, 14 …… Tapered square tube, 15 …… Side dam, 16 …… Fixing bolt, 17 …… Guide Groove, 18 ... Nut fixing groove, 19 ... Nut.

Claims (1)

[Scope of utility model registration request] 1. A side weir mounted vertically movable in a roll gap between a coating roll 1 and a doctor roll 2 and a central space 12 of a side tray 9 pressed against both side faces of the rolls 1 and 2.
A paint reservoir device for a roller curtain coater, which is characterized in that a paint reservoir 5 is constituted by 15.