JP2757451B2 - Two-component simultaneous coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to a two-liquid simultaneous coating apparatus, and particularly applies various coating liquids to the surface of a substrate (paper, film, cloth, etc.). The present invention relates to a two-liquid simultaneous coating apparatus for simultaneously applying coating liquids having different properties.

(Prior Art) Conventional liquid coating apparatuses are disclosed in Japanese Patent Publication No. Sho 57-171466 and Japanese Patent Publication No. Sho 62-18223. As shown in these figures, in a coating machine for applying each coating liquid to the surface of a base material (paper, film, cloth, etc.), two types of coating liquids having different properties are coated on one side. Many coating machines are used.

(Problems to be solved by the present invention) However, the actual situation is that the coating apparatuses are installed in two separate places as a first coating machine and a second coating machine, and are dried once after the first coating is performed. Through the process, the second coating was performed again, and the film was wound again after the drying process.

Therefore, two sets of coating device and dryer are installed, and the distance from the unwinding to the winding device through the coating process is long,
Therefore, there is a problem that the machine length (process length), that is, the installation area increases.

Therefore, the present invention is a technical problem to be solved, in which two types of coating liquids are simultaneously coated at a time by a pair of coating heads that are close to each other at substantially the same time.

(Means for Solving the Problems) A pair of a first discharge port and a second discharge port, which are close to each other from the outside in the radial direction, are opposed to each other at a very small interval from the outer periphery of the backup roll. That is, a fine adjustment mechanism for controlling the edge so as to be able to advance and retreat with respect to the roll is provided in the liquid path by communicating with the liquid supply source via the path.

According to this, the first liquid can be first applied to the base material on the roll from the first discharge port, and then the second liquid can be applied from the second discharge port. It is possible to save the number of units and shorten the process length, and further save the installation area.

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

Reference numeral 10 denotes a backup roll, and the base material 11 is wound up along the outer periphery of the roll 1 from below.

The central main body 13 has a wedge-shaped cross section, and the upper main body 14 and the lower main body 15 are fixed to each other with fixing bolts (not shown). Numerals 16 and 17 are radial depressions like bowls formed on the upper and lower main bodies, respectively. Near the right ends of both main bodies 14 and 15, lower depressions are provided.
17 is connected to a first coating liquid supply source 18, and the upper depression 16 is connected to a second coating liquid supply source 19.

Further, both the dents 16 and 17 are gradually narrowed at a predetermined gradient together in the discharge direction, and the minimum space forms rectangular or semicircular delivery passages 20 and 21 having a coating width and a minimum height.

Further proceeding toward the discharge port, liquid pools 22 and 23 having a predetermined space size for forming and sending out the coating liquid uniformly are formed, from which the first discharge port 24 and the second discharge port 25 are elongated. The discharge passages 26 and 27 communicate with each other.

In the vicinity of the two discharge ports 24 and 25 in FIG. 1, a pair of edge advance / retreat devices 28 is provided below, and a pair of edge advance / retreat devices is provided above.
29 will be described. The specific structure, shape, and assembled state of the components will be described with reference to FIG. 1 and FIGS.

First, referring to the upper edge retreating device 29 in relation to the drawing, the upper main body 14 has the above-mentioned upper recess 16 inward rightward,
On the left side, there is provided an upper dovetail groove 30 which is trapezoidal in cross section and narrows upward as seen in FIG. 1 and which is perpendicular to the plane of FIG. A pair of stepped round holes 32 whose opposing surfaces are open are formed.

Next, the upper edge 33 forms a trapezoidal projection 34 and a recess 41 to be fitted in the previous trapezoidal dovetail groove 30, and the packing plate 35 forms an insertion projection 36 and a step 37, both of which are the first. As shown, a trapezoidal projection 34 fits into the upper dovetail groove 30 of the upper body 14.

Then, the insertion protrusion 36 of the packing plate 35 fixed to the main body 14 enters the recess 41 of the edge 33, and the step portion 37 engages with the right end of the trapezoidal protrusion 34 to form a trapezoidal shape with respect to the upper main body 14. Protrusion
Decide the temporary position of 34 and packing plate 35. Of course, the central body 13, the edge 33, and the packing plate 35 are connected to the discharge passages 26, 27, the liquid reservoirs 22, 23, and the delivery passages 20, 21.
Is defined.

The upper edge moving device 29 is further provided with the edge adjusting bolt 4
2, an adjustment nut 43 and an adjustment taper sleeve 44 are prepared, and the adjustment taper sleeve 44 is located below the inside of both round holes 32 of the upper body 14 and the outer peripheral portion 46 of the sleeve 44 abuts on the wall surface 45. At the same time, the tapered portion 47 tapered downward is brought into contact with the right slope 48 of the trapezoidal projection 34. The adjustment nut 43 is fixed in the round hole 32 with a non-rotating small screw 49, and the edge pushing adjustment bolt 42 is screwed into the nut 43, and the tip small diameter is adjusted.
The 50 is fitted into the small hole 51 of the tapered sleeve 44, and the shoulder 52 of the bolt 42 is brought into contact with the upper surface 53 of the sleeve 44. The sleeve 44 can be moved up and down together with the bolt 42.

The edge advance / retreat device 28 is set in the same manner in both the rounded circles 32 of the lower main body 15. The names of those parts will be described with reference to FIG. Apply mutatis mutandis.

A lower edge 33 ', a lower packing plate 35', a lower edge adjusting bolt 42 ', an adjusting bolt female thread 43' and an adjusting taper sleeve 44 'are prepared and assembled in the same manner as described above.

The operation of the above-described structure will be described. The first liquid is supplied from the first coating liquid supply source 18, and the second liquid is supplied from the second coating liquid supply source 19. Supply from

At that time, the total amount of the applied liquid is determined by the pump supply amount.

And the properties of the coating liquid (aqueous, solvent-based, hot-met)
The adjustment of the difference between the ejection amount and the application amount due to the following is firstly performed. When the first liquid is applied on the base material 11, the adjustment of the amount applied on the upper surface is performed by rotating one lower edge retraction adjustment bolt 42 '. And one of the wall surfaces 38, 48 of the trapezoidal projection 34 of the edge 33 'and the tapered portion 47' of the sleeve 44 '.
Raise and move away with 2 '. Next, the other bolt 42 'is turned to make the tapered portion 47' of the sleeve 44 '
The edge is pressed against the other of 38 and 48 to move the edge 33 'forward and backward.

The adjustment of the coating amount of the second liquid is performed by rotating one of the upper adjustment bolts 42 and, similarly to the above, the sleeve 44 and the wall surfaces 38, 48.
A gap is formed between the two sleeves, and the other bolt is rotated to move the other sleeve up and down, and the edge 33 is moved forward and backward so as to eliminate the gap.

(Effect of the Invention) According to the present invention, as described above, the first
Since the liquid and the second liquid can be applied continuously, the number of coating devices and dryers is not required, the process length thereof is short, and the installation area can be minimized.

In this way, the first liquid and the second liquid are applied almost simultaneously on the base material 11, and the supply liquid is a bowl-shaped semicircular depression 16, 17.
From the coating width delivery passages 20 and 21 with a gradient, so that they can be averaged and discharged.

Further, since the liquid pools 22, 23 are provided between the delivery passages 20, 21 and the discharge ports 24, 25, the coating liquid pressure can be averaged.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a central longitudinal sectional view showing one embodiment of the present invention, and FIGS. 2 and 3 are exploded perspective views showing important parts of FIG. 10 ... backup roll, 18, 19 ... hydraulic pressure supply source, 2
0, 21, 26, 27 ... liquid path, 24 ... first discharge port, 25 ... second discharge port, 28, 29 ... fine adjustment mechanism, 33 ... edge, 33 '
…… edge.

Claims (1)

(57) [Claims] 1. A pair of a first discharge port and a second discharge port which are close to each other from the outside in the radial direction with respect to the outer periphery of a backup roll, are disposed opposite to each other with a very small interval therebetween, and are disposed via both discharge ports and a liquid path. A two-liquid simultaneous coating apparatus, characterized in that it is connected to a liquid supply source, and a fine adjustment mechanism is provided in the liquid path for controlling the edge to be able to advance and retreat with respect to the roll.