JP6936139B2 - Coating equipment - Google Patents

Description

The present invention relates to a coating device that coats a web with a coating liquid.

Conventionally, a coating device has been proposed in which a die is installed on the side of a backup roll that conveys the web, and a coating liquid is discharged from the front end of the die to coat the web.

Tokuhei No. 5-23836

The die in the coating apparatus is composed of a lower main body and an upper main body, and a liquid reservoir portion is provided in the lower main body in the left-right direction. A shim is sandwiched between the lower body and the upper body to position the coated portion on the web.

However, there is a problem that it takes time and effort to accurately set the position of the shim in the front-rear direction and the position of the backup roll and the die.

Therefore, in view of the above problems, an object of the present invention is to provide a coating device capable of easily setting the positions of shims and dies.

The present invention is a coating apparatus having a backup roll on which a web runs and a die horizontally arranged on the side of the backup roll, wherein the die has a lower body, an upper body, and a shim. A liquid reservoir is provided on the upper surface of the lower body, and the shim has a shape corresponding to the rear peripheral portion, the left peripheral portion, and the right peripheral portion of the liquid reservoir portion, and the upper surface of the lower body and the upper surface thereof. and the lower surface of the main body is fixed via the shim, shim adjustment means for adjusting the horizontal position of the shim sandwiched between the upper body and the lower body is provided, the base portion from the rear of the lower body It is a coating device that is erected, a space is formed between the base portion and the upper main body, and the shim adjusting means is provided between the space and the base portion.

According to the present invention, the positions of shims and dies can be easily set.

It is explanatory drawing of the coating apparatus which shows one Embodiment of this invention. It is a bottom view of a die. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 2 is a cross-sectional view taken along the line BB in FIG. It is an enlarged vertical sectional view seen from the front of an adjustment part and a dial gauge. It is an enlarged vertical cross-sectional view seen from the side of the adjustment part and the dial gauge, and is a state in which the shim is moving forward. It is an enlarged vertical cross-sectional view seen from the side of the adjustment part and the dial gauge, and the shim is moving backward. It is a front view of a shim. It is an enlarged view of the front end part of a die.

Hereinafter, the web W coating device 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 9. Examples of the long web W include a film, a metal plate, a mesh-like metal, paper, and cloth.

(1) Overall Configuration of Coating Device 10 The overall configuration of the coating apparatus 10 will be described with reference to FIGS. 1, 3, and 4. The coating device 10 has a backup roll 12 and a die 14.

As shown in FIG. 1, the backup roll 12 rotates in the clockwise direction, and the web W runs in the vertical direction (from bottom to top in FIG. 1) on the left peripheral surface thereof.

As shown in FIG. 1, the die 14 is horizontally provided on the left side of the backup roll 12. The die 14 is placed on a horizontal installation table 50 and fixed horizontally. The installation table 50 is horizontally provided on a frame (not shown). The die 14 has a lower main body 16 and an upper main body 18 as shown in FIGS. 3 and 4.

As shown in FIGS. 3 and 4, the lower main body 16 is a rectangular parallelepiped extending in the left-right direction, and the base 20 of the rectangular parallelepiped is erected upward from the rear portion of the upper surface. A downward inclined surface 22 is formed from the front end portion of the lower surface of the lower main body 16 toward the front end portion of the upper surface. At the tip of the front portion of the lower main body 16, an undercoating protrusion 54 extending in the left-right direction and having a rectangular parallelepiped front surface is formed. The upper surface of the lower main body 16 is a horizontal plane, and liquid reservoirs 24 are formed in the left-right direction.

As shown in FIGS. 3 and 4, the upper main body 18 is arranged above the lower main body 16, that is, in the front portion of the base 20, is a rectangular parallelepiped extending in the left-right direction, and has dimensions in the front-rear direction. Is formed smaller than the lower body 16. An upward inclined surface 26 is formed from the lower surface front end portion of the upper main body 18 toward the upper surface front end portion. At the tip of the front portion of the upper main body 18, a top coating protrusion 52 extending in the left-right direction and having a rectangular parallelepiped front surface is formed.

As shown in FIGS. 3 and 4, a plate-shaped shim 28 is sandwiched between the upper surface of the lower main body 16 and the lower surface of the upper main body 18. As shown in FIG. 8, the shim 28 is formed of the left peripheral portion 30, the right peripheral portion 32, and the rear peripheral portion 34 of the liquid reservoir portion 24 shown in FIG.

As shown in FIGS. 3 and 4, the fastening bolts 36 and 38 integrally fix the lower main body 16, the upper main body 18, and the shim 28. A plurality of fastening bolts 38 penetrate the rear peripheral portion 34 of the shim 28 shown in FIG. 8, but are formed to be slightly larger than the fastening bolt 38 so that the shim 28 can move in the front-rear direction. Further, a space 44 is formed between the upper main body 18 and the base 20.

As shown in FIG. 4, a coating liquid supply port 46 is opened at the center of the liquid reservoir 24 of the lower main body 16 in the left-right direction, and a hose 48 from a pump (not shown) is connected.

(2) Positional Relationship between Die 14 and Backup Roll 12 The positional relationship between the backup roll 12 and the die 14 will be described with reference to FIGS. 1 and 9. When the lower main body 16 and the upper main body 18 are combined, the lower inclined surface 22 and the upper inclined surface 26 are formed in a triangular shape as shown in FIGS. 3 and 9, and the tip portion thereof is on the left side of the backup roll 12. Located in the direction. Further, a liquid passage 40 is formed in front of the liquid reservoir 24 and between the lower main body 16 and the upper main body 18. The front end portion of the liquid passage 40 is a slit-shaped coating liquid discharge port 42, and the left and right portions of the liquid passage 40 are blocked by the left peripheral portion 30 and the right peripheral portion 32 of the shim 28 shown in FIG. ..

When the horizontal line S is extended from the rotation axis O of the backup roll 12 as shown in FIG. 1, the horizontal line S passes over the upper surface of the top coating protrusion 52 of the upper body 18 of the die 14 as shown in FIG. .. As a result, the front surface of the topcoating protrusion 52 is located closest to the left peripheral surface of the backup roll 12. As shown in FIG. 9, the coating liquid discharged from the discharge port 42 is applied to the surface of the web W by the backup roll 12 that rotates clockwise. Then, the distance between the top coating protrusion 52 and the web W traveling on the backup roll 12 is the coating gap.

(3) Coating Method A method in which the coating apparatus 10 coats the web W will be described with reference to FIGS. 1, 3, and 9.

First, as shown in FIG. 3, the coating liquid is supplied to the liquid reservoir 24 of the die 14 arranged on the left side of the backup roll 12 from a pump (not shown) via a hose 48 and a supply port 46.

Next, as shown in FIG. 3, the coating liquid supplied to the liquid reservoir 24 flows forward from the liquid passage 40 and is discharged from the discharge port 42. The discharged coating liquid is applied to the surface of the web W running on the left peripheral surface of the backup roll 12. The state at this time will be described in more detail.

As shown in FIG. 9, the lower inclined surface 22 and the upper inclined surface 26 of the die 14 are formed in a triangular shape, and the front end portions thereof are the top coating protrusion 52 and the bottom coating protrusion 54. The topcoat protrusion 52 and the undercoat protrusion 54 are so-called "lip type" because the lips are projected forward. Then, coating can be performed at the front end portion of the lip-shaped die 14. However, the problem here is that the left peripheral surface of the backup roll 12 is an arc, and the front surface of the topcoat protrusion 52 and the front surface of the undercoat protrusion 54 have a planar shape, so that even at the same position, the topcoat protrusion It is not possible to perform coating on the front surface of the 52 and the front surface of the undercoating protrusion 54 with the same coating pressure and coating thickness.

Therefore, in the present embodiment, as shown in FIGS. 1, 3 and 9, the upper end of the front surface of the topcoating protrusion 52 is aligned with the position of the horizontal line S from the rotation axis O. In this way, the distance between the upper end of the front surface of the top coating protrusion 52 and the left peripheral surface of the backup roll 12 is closest, and the coating pressure is applied most at this close position. Therefore, coating is performed at the position where the coating pressure is highest. That is, as shown in FIG. 9, the distance D between the upper end of the front surface of the top coating protrusion 52 and the left peripheral surface of the backup roll 12 becomes the coating interval, and the coating thickness is determined. In particular, since the front surface of the topcoat protrusion 52 and the front surface of the undercoat protrusion 54 are set at the same position, the web W can run smoothly as shown in FIG. 9, and the undercoat protrusion 54 The distance between the lower end of the front surface and the left peripheral surface of the backup roll 12 is L1, the distance between the upper end of the front surface of the undercoat protrusion 54 and the left peripheral surface is L2, and the distance between the lower end of the front surface of the topcoat protrusion 52 and the left. Assuming that the distance from the peripheral surface is L3 and the distance between the upper end of the front surface of the undercoating protrusion 54 and the left peripheral surface is L4, L1> L2> L3> L4, and the coating pressure applied to the web W gradually increases. , L4 can be coated at the position where the coating pressure is the highest.

(4) Positional Adjustment Structure of Shim 28 in the Front-Rearverse Direction Next, the position adjustment structure of the shim 28 in the front-rear direction will be described with reference to FIGS. 2 to 7.

As shown in FIG. 2, the rear portion of the rear peripheral portion 34 of the shim 28 is exposed from the upper main body 18 to the front portion of the space 44. As shown in FIGS. 3 and 8, four hook holes 67 are opened in the exposed portion of the shim 28.

Further, as shown in FIGS. 2 and 3, the base 20 of the lower main body 16 is provided with four through holes 62 in the front-rear direction. The position where the through hole 62 is provided is a position corresponding to the hook hole 67 of the shim 28, and is a position on both the left and right sides and both left and right ends of the central portion of the base portion 20. As shown in FIGS. 2 and 3, the adjusting portion 64 of the rod body is housed in the through hole 62 and is provided so as to be movable in the front-rear direction, and the front portion of the adjusting portion 64 is exposed in the space 44. The front end of the adjusting portion 64 has a screw hole 65 through which the hook screw 66 is screwed. On the other hand, as shown in FIG. 3, the rear end portion of the adjusting portion 64 is not exposed from the rear of the through hole 62.

As shown in the enlarged view of FIG. 3, the hook screw 66 passes through the hook hole 67 at the rear end of the shim 28 exposed in the space 44 and is fixed to the screw hole 65 of the adjusting portion 64. As a result, the shim 28 can be hooked on the adjusting portion 64 to maintain a predetermined position in the front-rear direction.

As shown in FIG. 3, an adjusting plate 68 is provided in the vertical direction on the rear surface of the base 20 at the rear end of the through hole 62. The lower end of the adjusting plate 68 is fixed to the rear surface of the base 20 with bolts 70 as shown in FIG. On the other hand, an extrusion bolt 72 is provided at the upper end of the adjusting plate 68, and a pull-in bolt 74 is provided below the extrusion bolt 72. The extrusion bolt 72 is screwed into a screw hole 76 provided on the rear surface of the base 20. Further, the tip of the pull-in bolt 74 is in contact with the rear surface of the base portion 20. As a result, the lower end of the adjusting plate 68 becomes a fixed end, and the upper end of the adjusting plate 68 becomes a free end that is moved back and forth by the push-out bolt 72 and the pull-in bolt 74.

As shown in FIG. 3, a fixing bolt 78 is screwed from the rear to the adjusting plate 68 corresponding to the position of the through hole 62, and the front end portion thereof is screwed and fixed to the rear surface of the adjusting portion 64 of the rod body. There is.

As shown in FIG. 5, a bent support plate 80 is provided in the vicinity of the through hole 62, and the dial gauge 82 is provided on the support plate 80. The front end of the measuring pin 84 of the dial gauge 82 is in contact with the rear surface of the fixing bolt 78. The dimension of the fixing bolt 78 moving in the front-rear direction can be measured by the dial gauge 82 when the measuring pin 84 moves in the front-rear direction together with the fixing bolt 78.

As shown in FIG. 4, a fixing block 86 is placed on the base 20 at the center of the space 44 in the left-right direction, and can be fixed by bolts 88. The front end of the fixing block 86 abuts on the rear end of the shim 28. As a result, the shim 28 is placed in front of the fixing block 86 placed on the front surface of the base 20, and the position of the shim 28 can be fixed.

(5) Method of adjusting the position of the shim 28 in the front-rear direction Next, a method of adjusting the position of the shim 28 in the front-rear direction will be described.

First, loosen the fastening bolt 36 and the fastening bolt 38 that fasten the lower main body 16 and the upper main body 18 to some extent, and with the shim 28 free to move forward, place the initial value fixing block 86 after the shim 28. prepare. In this state, the value of the dial gauge 82 is set to 0, that is, the initial value. Then, the fastening bolt 36 and the fastening bolt 38 are tightened to perform a coating test on the web W.

Secondly, after performing a coating test on the web W, if there is a problem with the coating and it is necessary to adjust the position of the shim 28 in the front-rear direction, the fixing block 86 is removed, and the fastening bolt 36 and the fastening bolt 38 are removed. To make the shim 28 movable in the front-rear direction. Since the fastening bolt 38 penetrates the rear peripheral portion 34 of the shim 28, the shim 28 does not come off from the lower main body 16 and the upper main body 18.

Thirdly, as shown in FIG. 6, when moving the shim 28 forward (position E), while looking at the dial gauge 82, tighten the extrusion bolt 72 to move the lower end portion of the adjusting plate 68 forward. Let (position C). In this case, all the four adjusting units 64 are moved in the same way. Depending on the coating state, a part of the adjusting unit 64 may be moved locally. As a result, the left peripheral portion 30 and the right peripheral portion 32 of the shim 28 move forward, the distance from the backup roll 12 becomes shorter, and the state of the coating liquid discharged from the discharge port 42 changes. On the other hand, as shown in FIG. 7, when moving the shim 28 to the rear (position F), while looking at the dial gauge 82, tighten the pull-in bolt 74 to move the upper end portion of the adjusting plate 68 to the rear (the position of F). Position of D). In this case, all the four adjusting units 64 are moved in the same way. As a result, the left peripheral portion 30 and the right peripheral portion 32 of the shim 28 move rearward, the distance from the backup roll 12 is increased, and the state of the coating liquid discharged from the discharge port 42 changes. After the movement of the shim 28 is completed, the fastening bolt 36 and the fastening bolt 38 are fastened, and the lower main body 16 and the upper main body 18 are fastened to fix the shim 28.

Fourth, the fixing block 86 is fixed between the base 20 and the rear end of the shim 28. In this case, the front-rear dimension of the fixed block 86 is set so as to match the dimension in which the position is adjusted in the front-rear direction. That is, with respect to the fixed block 86, in addition to the fixed block 86 for the initial value that determines the initial position of the dial gauge 82, a plurality of fixed blocks 86 suitable for the position adjustment in the front-rear direction are prepared.

Fifth, after the position adjustment of the shim 28 in the front-rear direction is completed, as shown in FIG. 1, the backup roll 12 is rotated to apply the coating liquid from the die 14 to the web W.

(6) Effect According to the above embodiment, the position of the shim 28 can be easily adjusted in the front-rear direction by adjusting the push-out bolt 72 and the pull-in bolt 74.

Further, since the position adjustment in the front-rear direction is performed while looking at the dial gauge 82, the shim 28 can be moved in the front-rear direction with accurate dimensions.

Further, since a plurality of adjusting portions 64 are provided in the left-right direction, the shim 28 can be uniformly moved in the front-rear direction in the left-right direction.

Further, since the initial position of the shim 28 in the front-rear direction is set by using the fixed block 86 for the initial value, the initial setting of the dial gauge 82 can be performed accurately.

Further, since the position of the shim 28 in the front-rear direction is set and the position of the shim 28 in the front-rear direction is fixed by the fixing block 86, the shim 28 does not shift in the front-rear direction.

Further, the coating liquid can be applied at the position where the coating pressure applied to the web W is the highest only by matching the upper end of the front surface of the top coating protrusion 52 with the position of the horizontal line S from the rotation axis O.

(7) Modification Example In the above-described embodiment, the adjusting portions 64 are provided at four locations in the left-right direction of the shim 28, but the present invention is not limited to this, and the adjusting portions 64 may be provided only on the left side portion and the right side portion.

Further, in the above-described embodiment, the shim 28 is provided only with the left peripheral portion 30, the right peripheral portion 32, and the rear peripheral portion 34 of the liquid reservoir portion 24, but when the web W is subjected to stripe coating, the left peripheral portion 30 is provided. A plurality of projecting pieces are provided between the right peripheral portion 32 and the shim 28 into a comb-shaped shape. In this case, the position of the projecting piece is the unpainted portion. In this case, it is preferable to provide the adjusting portion 64 at the position where the projecting piece is provided.

In the above embodiment, the adjusting unit 64 is adjusted by adjusting the extrusion bolt 72 and the pull-in bolt 74, but instead of this, it may be moved in the front-rear direction by another method, for example, by moving it in the front-rear direction by a servomotor or the like. May be good.

Further, in the above embodiment, four or more, for example, six hook holes 67 of the shim 28 may be provided. The adjusting unit 64 is also provided at six locations corresponding to this.

Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 ... Coating device, 12 ... Backup roll, 14 ... Die, 16 ... Lower body, 18 ... Upper body, 20 ... Base, 24 ... Liquid reservoir, 28 ... Sim, 30 ... Left peripheral part, 32 ... Right peripheral part, 34 ... Rear peripheral part, 44 ... Space, 52 ... Top coating protrusion, 54 ... Undercoating Protrusion, 64 ... Adjustment, 68 ... Adjustment plate, 70 ... Bolt, 72 ... Extrude bolt, 74 ... Pull-in bolt, 78 ... Fixing bolt, 82 ... Dial gauge

Claims (10)

The backup roll on which the web runs and
With dies horizontally arranged on the side of the backup roll,
In the coating equipment with
The die has a lower body, an upper body and a shim.
A liquid reservoir is provided on the upper surface of the lower body.
The shim has a shape corresponding to the rear peripheral portion, the left peripheral portion, and the right peripheral portion of the liquid reservoir portion.
The upper surface of the lower body and the lower surface of the upper body are fixed via the shim.
A shim adjusting means for adjusting the horizontal position of the shim sandwiched between the lower main body and the upper main body is provided .
The base is erected from the rear part of the lower body,
A space is formed between the base and the upper body.
The shim adjusting means is provided in the space and the base.
Coating equipment. The rear portion of the rear peripheral portion of the shim is exposed to the space.
The shim adjusting means includes an adjusting portion and a moving means for moving the adjusting portion in the front-rear direction.
The front portion of the adjusting portion is fixed to the shim exposed in the space, and the front portion is fixed to the shim.
The moving means is provided at the base.
The coating apparatus according to claim 1. A through hole is opened in the base in the front-rear direction.
The adjusting portion penetrates the base portion so as to be movable in the front-rear direction.
The moving means has an adjusting plate, a fixing bolt, and an adjusting bolt.
The adjusting plate is arranged so as to straddle the through hole on the rear surface of the base portion.
One end of the adjusting plate is a fixed end and the other end is a free end.
The adjusting plate and the lower part of the adjusting portion are fixed by the fixing bolts.
The adjusting bolt for moving the other end of the adjusting plate in the front-rear direction is provided.
The coating apparatus according to claim 2. The adjusting bolt comprises an extrusion bolt screwed into the rear surface of the base portion and a pull-in bolt having a front end portion in contact with the rear surface of the base portion.
The coating apparatus according to claim 3. A dial gauge is provided on the rear surface of the base.
A measuring pin protruding from the dial gauge is in contact with the lower end of the fixing bolt.
The coating apparatus according to claim 4. The adjusting portion is a rod body.
The coating apparatus according to claim 2. A fixing block is arranged between the front surface of the base and the rear end of the shim.
The coating apparatus according to claim 2. The front-rear dimension of the fixed block is a dimension corresponding to the initial position of the front-back position of the shim.
The coating apparatus according to claim 7. The shim is comb-shaped with one or more protruding pieces protruding from the rear peripheral portion between the left peripheral portion and the right peripheral portion.
The coating apparatus according to any one of claims 1 to 8. A top coating protrusion having a flat front surface is formed at the tip of the front portion of the upper body.
An undercoating protrusion having a flat front surface is formed at the tip of the front portion of the lower body.
A discharge port opens between the topcoat protrusion and the undercoat protrusion,
A horizontal line from the rotation axis of the backup roll passes through the upper end of the topcoat protrusion.
The coating apparatus according to claim 1.

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