JP3139639B2 - Die coater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die coater and, more particularly, to an improved die coater capable of easily changing a coating width.

[0002]

2. Description of the Related Art Conventionally, a die coater has been used as a coating device for a surface of a running sheet. The die coater is a coating apparatus provided with a die in which a manifold is formed by upper and lower molds, a slit is formed at a tip end extending from the manifold, and a deckle is disposed on each of the left and right sides of the slit in a liquid-tight state. The coating liquid supplied into the die is distributed by a manifold, extruded from a slit into a thin film, and coated on the surface of a running sheet. The coating width is adjusted by changing the distance between the deckles.

[0003]

In the conventional die coater, when the coating width is changed by moving the deckle to a predetermined position, it is necessary to remove the die from the die coater and disassemble the die. However, since the die coater has many assembly bolts, it takes a long time to remove the die and disassemble and assemble the die. Also,
When changing the paint, it is necessary to clean the inside of the die, but also in this case, the complicated work as described above is required. The present invention has been made in view of the above circumstances,
An object of the present invention is to provide an improved die coater so that a coating width can be easily changed.

[0004]

That is, the gist of the present invention is that a manifold is formed by upper and lower molds, a slit is formed at a tip extending from the manifold, and a deckle is disposed on the left and right sides of the slit. In a die coater provided with a die for adjusting the coating width by changing the distance between the respective deckles, the lower mold located forward of the manifold has a smooth slope inclined from the front end face toward the manifold. The rear mold part is divided into a front mold part and a rear mold part, a through hole is provided in the rear mold part, a rod is fitted into the through hole, and the tip of the rod is connected to the front mold part. And a rear end connected to a forward and backward mechanism.

[0005]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory side view showing an example of the die coater of the present invention, and FIG. 2 is an explanatory front view of the die coater shown in FIG. 1, illustration of the side plate (13) shown in FIG. 2 is omitted.

Die (1) in die coater of the present invention
Has basically the same structure as a conventional die coater, a manifold (4) is formed by upper and lower dies (2) and (3), and a slit (5) is formed at a tip end extending from the manifold. Are formed, and the deckles (6) and (6) are arranged on the left and right sides of the slit in a liquid-tight state. The left and right deckles (6), (6) are usually made of an aluminum plate or the like.

The feature of the die coater of the present invention is that the die (1)
Is a point that the lower mold (3) is formed into a two-part structure. That is, the lower mold (3) located forward of the manifold has a front mold part (3a) formed by a smooth inclined surface (7) inclined from the front end face toward the manifold (4).
And a rear mold part (3b). as a result,
The front mold part (3a) has a substantially triangular prism shape.

A through hole (8) is provided in the rear mold part (3b), a rod (10) is fitted in the through hole, and the tip of the rod is connected to the front mold part (3a). The rear end is connected to the forward / backward movement mechanism (9). The through-hole (8) may be provided at two places on the left and right, and two sets of the rod (10) and the forward / backward mechanism (9) may be used. It is sufficient to provide the through holes (8).

The connection between the front mold part (3a) and the rod (10) is made, for example, by forming a screw part inside the front mold part (3a) and at the tip of the rod (10) and screwing them together. Can be done. As the forward / backward mechanism (9), a thin hydraulic cylinder is usually used from the viewpoint of easy attachment to the back plate (11). A packing (14) is disposed at an appropriate position of the rod (10) fitted in the through hole (8).

In the die (1) constructed as described above, the rod (10) is driven by driving the forward / backward movement mechanism (9).
Is retracted, the front mold part (3a) is pulled up the upper surface of the rear mold part (3b) toward the manifold (4) along the smooth inclined surface (7). As a result, the slit (5) and the right and left deckles (6) and (6) are mutually fastened by the above-mentioned lifting force, and the liquid-tight state between the two is maintained. Conversely, by driving the forward and backward mechanism (9) to advance the rod (10), the tightening between the slit (5) and the right and left deckles (6) and (6) is released, and the rod (10) is released. By further advancing (10), a gap can be formed between the front mold part (3a) and the rear mold part (3b).

Therefore, the lower mold (3) is connected to the front mold part (3).
a) and the rear mold part (3b) at two positions (upper and lower positions on the front end face of the lower mold), the angle of the smooth inclined surface (7), and the rod (10) on the front mold part (3a). The connecting position (height) and the like can be sufficiently generated by the forward and backward mechanism (9), and the front mold portion (3a) and the rear mold can be formed by the forward movement of the rod (10). It is necessary to determine that a gap can be formed between the parts (3b).

In a preferred embodiment of the present invention,
The end of the front mold part (3a) on the manifold side is cut out at substantially a right angle, and the left and right deckles (6) and (6) are bent and engaged with the cutout (12). I have.
According to such an embodiment, the deckles (6) and (6) can be moved along the notch (12), which is convenient.

The die coater of the present invention is configured as described above and used as follows. <Work to change the coating width> First, the paint manifold (4)
Of the slit (5) and the right and left deckles (6) and (6) is released by stopping the supply to the slit and driving the forward and backward mechanism (9) to advance the rod (8). . Next, after the left and right deckles (6) and (6) are moved to predetermined positions, the forward / backward movement mechanism (9) is driven to retract the rod (10), whereby the slit (5) and the left and right deckles are moved. A liquid-tight state is set between (6) and (6). Then, the supply of the paint to the manifold (4) is restarted.

<Washing Inside Die> First, the supply of the paint to the manifold (4) is stopped, and a washing solvent is supplied to the manifold (4) to wash the inside of the die and the slit (5). The cleaning solvent flows out of the slit (5) and is received in a container arranged at an appropriate position. Next, by driving the forward / backward movement mechanism (9) to advance the rod (8), the tightening between the slit (5) and the right and left deckles (6) and (6) is released, and the front mold part is released. A gap is formed between (3a) and the rear mold part (3b). By such an operation, the cleaning solvent flows out of the gap between the front mold part (3a) and the rear mold part (3b) and is received in the above-mentioned container. At this time, the entire inside of the slit (5) can be sufficiently cleaned by moving the deckles (6) and (6) to the right and left as appropriate. Next, after the completion of the cleaning, the rod (10) is moved backward by driving the forward / backward movement mechanism (9), whereby the gap between the slit (5) and the right and left deckles (6) and (6) is made liquid-tight. Then, the supply of the paint to the manifold (4) is restarted.

[0015]

According to the present invention described above, there is provided a die coater improved so that the coating width can be easily changed, and the industrial value of the present invention is remarkable.

[Brief description of the drawings]

FIG. 1 is an explanatory side view showing an example of a die coater according to the present invention.

FIG. 2 is an explanatory front view of the die coater shown in FIG. 1;

[Explanation of symbols]

 1: die 2: upper mold 3: lower mold 3a: front mold part 3b: rear mold part 4: manifold 5: slit 6: deckle 7: smooth inclined surface 8: through hole 9: forward and backward mechanism 10: Rod 11: Back plate 12: Notch 13: Side plate 14: Packing

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B05C 5/02 B05B 1/04

Claims (2)

(57) [Claims] 1. A manifold is formed by upper and lower molds, a slit is formed at a tip end extending from the manifold, a deckle is disposed on the left and right of the slit, and a distance between the respective deckles is set. In a die coater provided with a die for changing and adjusting the coating width, a lower mold located forward of the manifold has a front mold section and a rear mold section with a smooth inclined surface inclined from the front end face toward the manifold side. The through-hole is provided in the rear mold portion, a rod is fitted in the through-hole, the tip of the rod is connected to the front mold portion, and the rear end is connected to the forward and backward mechanism. Die coater characterized by being. 2. The die coater according to claim 1, wherein an end of the front mold portion on the manifold side is cut out at a substantially right angle, and the end of the deckle is bent and engaged with the cutout.