JP3143692B2 - Coating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for coating a surface of a running sheet with a coating liquid ejected from a slit, wherein the coating width can be easily changed. .

[0002]

2. Description of the Related Art As a coating apparatus 1 of this type, as shown in FIG. 5, a manifold 3 and a slit 4 extending from the manifold 3 are formed on a coating head 2, and a liquid feed pipe 5 is connected to the manifold 3. In some cases, the supplied coating liquid is evenly distributed to the entire area of the slit 4 and the coating liquid is applied from the slit 4 to the surface of the sheet S. The coating apparatus 1 includes a coating head 2
A doctor 6 is provided, and a coating liquid applied to the surface of the sheet S traveling while being held by the back-up roll 7 is post-measured by the doctor 6 to form a coating film having a predetermined film thickness. is there.

[0003] The coating apparatus 1 is not shown, except that the coating head 2 is disposed so as to face the back-up roll 7. However, the coating head 2 may be disposed between two rolls. Alternatively, it is also possible to arrange the coating head 2 so as to face the belt conveyor. When the sheet is disposed between the two rolls, the surface of the sheet guided by the two rolls and running under a constant tension is pressed against the doctor 6 for coating. In addition, in the case of arranging so as to face the belt conveyor, the doctor 6 approaches the surface of a material to be coated such as a plate material conveyed by the belt conveyor and performs coating.

[0004] As shown in Fig. 6, a coating apparatus 1 changes a coating width W of a slit 4 in accordance with a width dimension of an object to be coated such as a sheet S or a plate material. Are arranged in a liquid honey state. When the coating width W is changed by moving the sealing tools 8, 8 to a predetermined position, it is necessary to disassemble and assemble the coating head 2. However, it takes a long time to disassemble and assemble the coating head 2 and readjust it after assembly.
Every time the width of the object to be coated was changed, the operating efficiency was reduced.

As a measure for solving this problem, a movable sealing tool described in Japanese Patent Application Laid-Open No. 7-68207 can be considered. As shown in FIG. 7, the sealing device 10 has an inner deques shaft 12 that is movable in a liquid honey state in the vicinity of the tip in a manifold 11 and is provided in the inner deques shaft 12. Slit 1
5, a deckle 13 movable in a liquid honey state and a deckle guide 14 arranged before and after the deckle 13,
14 is fixed, and the deckle 13 is connected to the liquid honey state portion of the inner deck shaft 12.

[0006]

However, the above-mentioned sealing device 10 has a deckle 13 attached to an inner deck shaft 12.
, It is difficult to maintain a liquid honey state at this joint, and the coating liquid may leak from this joint.

[0007] Accordingly, a first aspect of the present invention, it is rather Na leaking from the joint of the sealing device, Chiyo the slit
When the seal is formed, move the sealing device smoothly.
The purpose of the present invention is to provide a coating apparatus that can perform the following. Another object of the present invention is to provide a coating apparatus in which the sealing ability of a sealing tool is improved.

[0008]

According to the gist of the present invention, a manifold and a slit extending from the manifold are formed on a coating head, and a sealing tool is arranged on the manifold and the slit in a liquid honey state. In the coating apparatus described above, the sealing device includes a movable sealing member abutting in a liquid honey state on a wall surface forming a manifold and a slit, a holding member for sandwiching both side surfaces of the sealing member, and a sealing member extending from the holding member. and an operating rod which is set, switch the slits
A yoke is formed, and the slit is removed from the slit except for the yoke.
Corresponding location and the location corresponding to the manifold
The operating rods are provided in such a manner that the operating rods are interlocked .

According to the first aspect of the present invention, the seal member can be brought into contact with the entire area of the wall which forms the manifold and the slit in which the seal is required, in a liquid honey state. Since the seal member is held by the holding member, the seal member maintains the liquid honey state without being deformed during the movement even when moved by the operation rod. Further, according to the present invention,
Remove the weak parts of the sealing device corresponding to the
Where the strength of the sealing fixture can be increased.
Slip excluding the part corresponding to the manifold
Operate the force to move the seal at the location corresponding to the lip
Can be transmitted by stick.

The gist of the present invention described in claim 2 is as follows.
In the coating apparatus described above, the seal member includes a plurality of seal plates abutting on the wall surface in a liquid honey state, and a back-up plate sandwiched between adjacent seal plates so as not to abut on the wall surface. That is.

According to the second aspect of the present invention, a plurality of sealing portions are formed because each of the plurality of sealing plates supported by the back-up plate abuts on the wall surface in a liquid honey state.

[0012]

[0013]

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a coating apparatus according to the present invention will be described based on an embodiment shown in the drawings.

FIG. 1 is a side view showing a state in which the sealing tool 25 is inserted into the coating head 21, and FIG. 2 is a view taken along the line AA of FIG. 1 (that is, the structure of the coating head 21 shown in FIG. 1). FIG. 3 is a front view partially showing and partially cross-sectional view (when the block 21a to be removed is removed), FIG. 3 is an enlarged plan sectional view of the sealing device 25 taken along line BB in FIG. 1, and FIG. FIG. 3 is a side cross-sectional view showing the coating head after the sealing tool has been pulled out.

As shown in FIGS. 1 to 4, the coating apparatus 20 includes a coating head 21 having a manifold 23 and a slit 24 extending from the manifold 23. The manifold 23 and the slit 24 are opened from both open ends. There are two sets of sealing tools 25 to be inserted (FIG. 2 shows only one set). The coating head 21 has two blocks 21a, 21
b is joined by bolts (not shown). The coating head 21 is provided at the upper end of a block 21a with a doctor 22 for post-metering (after-metalling). The coating apparatus 20 has the coating head 21 arranged so as to face the backup roll 7 (see FIG. 4), or is arranged at a position between two rolls or a position facing the belt conveyor.

As shown in FIGS. 2 and 3, the sealing member 25 includes a movable sealing member 26 which comes into contact with a wall surface 31 forming the manifold 23 and the slit 24 of the coating head 21 in a liquid honey state, and a wall surface. Holding members 27 and 28 for holding the sealing member 26 so as not to abut against the wall 31;
And operating rods 29, 29 extending from the holding member 28 so as not to abut on the operating member 1. The seal member 26 includes a plurality of seal plates 33 that abut on the wall surface 31 in a liquid honey state,
Two sealing plates 33, 33 so as not to contact the wall surface 31
And a back-up plate 34 interposed therebetween.

When the sealing plate 33 and the back-up plate 34 are overlapped with each other, a plurality of bolts 35 penetrate and are held by holding members 27 and 28 connected by the tightened bolts 35. The sealing plate 33 has a thickness of 1 to 4 m.
m, and is formed from a silicon rubber plate, a foamed polyethylene plate, a fluororesin plate, or the like. Seal plate 3
Reference numeral 3 denotes a shape which can be inserted into the manifold 23 and the manifold 23 in a moderately pressurized state, and the elastically deformed outer edge portion comes into contact with the wall surface 31 in a liquid honey state. The back-up plate 34 has a thickness of 0.5 to 1.5 m.
It is formed from a stainless steel plate of about m or a hard synthetic resin plate. The seal member 26 may be formed of a single seal plate 33 having a plate thickness of about 5 to 15 mm without the back-up plate 34.

The holding members 27 and 28 are formed from a stainless steel material or the like. The holding member 27 on the inner side includes a holding plate portion 36 for holding the seal member 26 by pressing, and a holding plate 3.
6 and a rib portion 37 joined to the inner side surface. Rib part 3
Reference numeral 7 is such that the coating liquid is guided to the vicinity of the seal member 26 by appropriately reducing the size downward from the upper end of the holding plate portion 36 and forming an inclined portion 37a.

The operating rods 29, 29 are sealing tools 2 corresponding to the narrow yoke 24a of the slit 24 (see FIG. 4).
5 is joined to a portion corresponding to the manifold 23 where the strength of the sealing member 25 can be strengthened except for the portion having a weak strength, and to a portion corresponding to the slit 24 except the chi-yoke 24a. The operation rods 29, 29 are joined to a moving operation tool 46 provided outside the coating head 21.

The moving operation tool 46 includes operating rods 29, 29.
Are screwed into the sealing plate 39 and the bearing plates 40 and 41 through which the bolts 29a formed on the respective operating rods 29 are threaded.
Driven gears 42, 42 arranged between bearing plates 40, 41
And the bearing plate 4 so as to mesh with the driven gears 42, 42.
0, 41, the driving gear 43,
And a bolt 44 joined to the bolt. The seal plate 39 and the bearing plates 40 and 41 are attached to the coating head 21 by bolts 47.
And are firmly joined.

The operator forcibly rotates the head 44a of the bolt 44 with a wrench or the like, so that the driving gear 43
, The driven gears 42, 42 can be rotated forward or backward to push and pull the operating rods 29, 29. Operation stick 2
With the pushing and pulling of 9, 29, the sealing tool 25 moves smoothly without deformation.

[0023]

As described in detail above, the coating apparatus according to the present invention has the following excellent effects.

According to the first aspect of the present invention, the coating width can be easily changed without disassembling the coating head, and the entire area of the wall surface forming the manifold and the slit which needs a seal is required. Since the sealing member of the sealing device is brought into contact with the liquid honey, leakage from the manifold and the slit can be completely prevented. The liquid honey state can be maintained without deformation. Also, sealing tools
Force to move to places where strength can be increased
Can be transmitted smoothly without deforming the sealing device.
Can be moved.

According to the second aspect of the present invention, a plurality of sealing portions are formed by a plurality of sealing plates, and the sealing ability is improved.

[0026]

[Brief description of the drawings]

FIG. 1 shows an embodiment of a coating apparatus according to the present invention, and is a side view showing a state where a sealing tool is inserted into a coating head.

FIG. 2 is a front view showing a part when viewed along the line AA in FIG. 1 and partially sectioned;

FIG. 3 is an enlarged cross-sectional plan view of the sealing device taken along line BB in FIG. 1;

FIG. 4 is a side cross-sectional view showing the coating head after the sealing device has been pulled out.

FIG. 5 is a side sectional view showing a conventional coating apparatus.

FIG. 6 is a front sectional view taken along line CC in FIG. 5;

FIG. 7 is a perspective view showing a conventional coating head and a sealing tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 ... Coating head 23 ... Manifold 24 ... Slit 24a ... Chi-yoke 25 ... Sealing tool 26 ... Sealing member 27, 28 ... Holding member 29 ... Operating rod 31 ... Wall surface 33 ... Seal plate 34 ... Back-up plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-214569 (JP, A) JP-A-6-198240 (JP, A) US Pat. No. 4,326,662 (US, A) (58) Fields studied (Int .Cl. ⁷ , DB name) B05C 5/02 B05B 1/04

Claims (2)

(57) [Claims] 1. A coating apparatus in which a manifold and a slit extending from the manifold are formed in a coating head, and a sealing tool is arranged in a liquid honey state on the manifold and the slit, wherein the sealing tool includes a manifold and a slit. A movable seal member that abuts on a wall surface to be formed in a liquid honey state, and a holding member that sandwiches both side surfaces of the seal member,
And an operating rod which is extended from the retaining member, the slit
A slit is formed in the slit, and the slit except the slit is
Of the part corresponding to and the part corresponding to the manifold
Each of the operation rods is provided, and these operation rods are interlocked.
Coating apparatus, characterized in that the. 2. The sealing member comprises a plurality of sealing plates abutting on the wall surface in a liquid honey state and a back-up plate sandwiched between adjacent sealing plates so as not to abut on the wall surface. 2. The coating device according to 1.