JP2757452B2 - Two-component simultaneous coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a two-liquid simultaneous coating apparatus, and particularly to a substrate (paper,
The present invention relates to a two-liquid simultaneous coating apparatus for applying a first liquid and a second liquid substantially simultaneously on a sheet-like surface.

(Prior Art) Conventionally, as this type of apparatus, there are those disclosed in JP-B-64-15172 and JP-B-64-18468, but in each case, the first liquid is first applied onto a substrate. Thereafter, a method of once drying and then applying the second liquid again thereon was adopted.

(Problems to be Solved by the Invention) However, in the above-described conventional apparatus, not only the number of coating machines but also a dryer is required, the process length is increased, and the installation area of each machine is also increased. And so on.

Therefore, an object of the present invention is to solve the above-mentioned problem by applying the two liquids onto the substrate substantially simultaneously from the two discharge ports arranged at positions substantially adjacent to each other.

[Configuration of the invention]

(Means for Solving the Problems) A first discharge port and a first coating liquid supply inlet, and a second discharge port and a second coating liquid supply inlet communicate with each other through passages, and a second discharge port is provided. In the vicinity, a fine adjustment mechanism including a notch bar adjustable by fluid pressure for adjusting the application amount is provided.

(Operation) According to this, first, the first liquid is applied on the base material, and the second liquid, the amount of which is adjusted by the fine adjustment mechanism, is applied substantially simultaneously thereon, and the two liquids are applied simultaneously. be able to.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 10 denotes a first nozzle body, 11 denotes a common body, and 12 denotes a second nozzle body.

Between the first nozzle main body 10 and the common main body 11, a first recess 14 having a semicircular cross section is formed so as to face down a bowl through which the first liquid from the first coating liquid supply inlet 13 passes. A narrowing passage 15 formed and narrowed gradually towards the exit direction
Then, it narrows down to the coating width, and the cross section is semicircular or rectangular,
For this purpose, the first liquid is averaged and discharged from the depression 14.
A liquid reservoir chamber 16 is formed between the first discharge port 17 and the first discharge port 17 and serves to equalize the coating liquid pressure.

Similarly, between the common main body 11 and the second nozzle main body 12, a second recess 19 having a semicircular cross section for passing the second liquid from the second coating liquid supply inlet 18 is formed. A liquid reservoir chamber 21 is formed between the narrow passage 20 which is gradually narrowed toward the outlet direction and narrows and a second discharge port 22 ahead of the narrow passage 20. The description is omitted because it is the same as that of the passage.

A fine adjustment mechanism 23 for finely adjusting the application amount is provided near the immediate discharge port 22 in the left and right portions of the second nozzle body 12.

That is, a horizontal hole 24 from the left to the right and a stepped vertical hole 25 from the upper side to the lower side are drilled in a state of being orthogonal at both ends, and the horizontal hole 24 corresponds to a direction perpendicular to the paper surface. A notch bar receiving seat 26 having both lengths is fitted, the right end surface of which forms a tapered surface 27, the left end surface of which forms a semi-circular receiving groove 28. Approximately 1/4 part is underfilled 29
3/4 circumference 30 of notch bar 31 formed with remaining 3/4 circumference 30
An elastic holding plate 34 held down by a holding plate fixing member 33 screwed with a set screw 32 on the upper left end surface of the second nozzle body 12 so as to be rotatably fitted within a certain range and maintain that state. The front end of the notch bar 31 is pressed against the upstanding surface of the notch 29 of the notch bar 31 by receiving a spring pressure, and constantly biases the notch bar 31 and the receiving seat 26 rightward.

On the other hand, an adjustment taper sleeve 36 having a taper surface 35 for abutting and joining with the right end surface taper surface 27 of the above-mentioned seat 26 is inserted into the left end surface of the stepped vertical hole 25, and the lower surface 37 thereof is vertically inserted. A slight adjustment space 39 is left between the hole 25 and the bottom surface 38.

Subsequently, the air cylinder 40 is fitted until it comes into contact with the step portion of the stepped vertical hole 25, and the air piston 42 is inserted into the cylinder 40 with a compression spring 41 interposed therein, and the lower stepped small diameter portion 43 is inserted thereunder. Fits into the center round hole 44 of the adjusting taper sleeve 36, and the upper surface 45 of the sleeve 36 and the piston step
46 is in contact.

The upper end of the opening of the cylinder 40 is fixed to the upper surface of the second nozzle body 12 by a set screw 47 with a set screw 48, and the cylinder upper space 49 is connected to an air supply source via a nipple 50.

Reference numeral 51 denotes a smoothing sheet made of a plastic film or a thin carbon steel plate that protrudes toward the first discharge port 17 at the forefront of the common body 11, and prevents mixing of the first liquid and the second liquid, The first liquid achieves uniformity in the width direction and a smoothing effect.

In the structure as described above, the first liquid is supplied from the first coating liquid supply inlet 13 and the second liquid is supplied from the second coating liquid supply inlet 18 by the metering pump. The coating is applied on the base material 53 which is wound from the lower side to the upper side, and the total amount of the coating is determined by the pump supply amount.

Adjustment of the difference between the properties of the coating liquid (water-based, solvent-based, hot-melt) and the amount of coating, and the fine adjustment of the coating amount (coating thickness) in the width direction can be made by using the minute displacement of the notch bar 31 in the forward and backward directions. Do.

The fine adjustment is performed by finely adjusting the air pressure to the upper space 49 of the air cylinder, thereby moving the piston 42 forward and lowering the cam sleeve 36.
Presses the right end face taper 27 of the seat 26, and the notch bar 31
Is advanced toward the base material 53 against the elastic pressing plate 34, and in particular, the application amount of the second liquid is adjusted.

Conversely, when the air pressure is reduced, the piston 42 is returned upward by the spring 41, and the notch bar 31 and the receiving seat 26 are retracted by the pressing plate 34 correspondingly, and the taper 27 pushes up the taper 35. Acts to adjust the amount of application.

At this time, depending on the thickness, strength and elasticity of the smoothing sheet 51, the sheet
Also slightly retreats and adjusts the application amount of the first liquid.

Although not shown, it is also possible to perform automatic correction of the coating thickness by linking the air pressure regulating valve connected to the air cylinder 40 with the coating thickness detector.

Further, since the notch bar 31 is pressed against the receiving seat 26 by receiving the repulsion of the elastic holding plate 34, the relative angle between the two is manually adjusted, and especially the second liquid from the second discharge port 22. It is also possible to change the discharge direction etc. of the notch bar 31 itself by removing the set screw 32 and removing the holding plate fixture 33 and the elastic holding plate 34 to make the notch bar 31 itself of a different shape, dimensions and material changed. Can be exchanged.

(Effects of the Invention) According to the present invention, two-liquid coating can be performed at about the same time with one coating device, and no drying machine or extra coating machine is required, and the process length can be reduced. A great effect is achieved, such as saving the installation area.

In addition, the gap between the base material and the discharge port can be easily adjusted by changing the adjustment pressure and simply exchanging the main parts. Actually, the notch bar seat and the fine adjustment mechanism are arranged apart from each other along the notch bar extending in the width direction of the roll, so the elasticity of the notch bar is used by changing the supply pressure to each fine adjustment mechanism. In this way, the notch bar can be made to reciprocate partially in the length direction, thereby making a partial adjustment of a thin coating amount.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view showing an embodiment of the present invention. 13 ... first coating liquid supply inlet, 14, 15, 16 ... first passage,
17 ... first discharge port, 18 ... second coating liquid supply inlet, 19,
20, 21 ... second passage, 22 ... second discharge port, 23 ... fine adjustment mechanism.

Claims (1)

(57) [Claims] 1. A first discharge port and a first coating liquid supply inlet, and a second discharge port and a second coating liquid supply inlet are communicated with individual passages, respectively, in the vicinity of the second discharge port. Wherein a fine adjustment mechanism including a notch bar adjustable by a fluid pressure for adjusting an application amount is provided.