JP7420490B2 - Valve and intermittent coating device using it - Google Patents

Description

The present invention relates to a valve and an intermittent coating device using the same.

When applying a coating liquid to a film, paper, metal foil, etc., there is an intermittent coating device that intermittently applies coating to coated areas and uncoated areas using a die along the running direction of the web. At this time, a valve for supplying the coating liquid to the die is opened and closed to alternately form coated portions and uncoated portions.

Japanese Patent Application Publication No. 2015-112520

The valves in the intermittent coating equipment mentioned above are direct-acting type that use voice coil motors, etc., so it is difficult to open and close them quickly, so it is necessary to shorten the length of the uncoated part. The problem was that it was difficult to

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a rotary valve that can quickly open and close a discharge port of the valve, and an intermittent coating device using the valve.

The present invention includes a cylindrical first valve box, a first inlet for fluid opened in the first valve box, a first discharge port for fluid opened in an outer peripheral part of the first valve box, and a first rotating body that rotates within a first valve box; a first drive unit that rotates the first rotating body; a first valve body that closes an outlet , the first rotating body is an impeller in which a plurality of fan-shaped fan openings are formed, and the first discharge port is arranged on an axis of the first rotating body. The first valve body has a slit shape extending in the direction, and the outer circumferential portion of the first valve body is arcuate so as to be able to close the slit-shaped first discharge port. , a recess is formed in the axial direction, the length of the recess in the axial direction is larger than the length of the slit-shaped first discharge port, and the first drive unit The first valve body is rotated to place the first valve body at the position of the first discharge port to close the first discharge port, or the first valve body is placed at a position other than the first discharge port. and opens the first discharge port.

The present invention also provides a cylindrical second valve box, a second fluid outlet opening in the outer circumference of the second valve box, and a second fluid inlet opening in the second valve box. , a second rotating body that rotates within the second valve box; a second drive unit that rotates the second rotating body ; a second valve body that closes a discharge port; the second rotating body is an impeller in which a plurality of sector-shaped fan openings are formed; The cylindrical second valve body has a slit shape extending in the axial direction, and a notch is formed in the axial direction, and the outer peripheral part of the second rotating body in which the notch is formed is A passage hole for the fluid is formed by a cutout, and the length of the cutout in the axial direction is larger than the length of the slit-shaped second discharge port, and the second drive unit 2. Rotate the rotating body to place the second valve body at the second outlet to close the second outlet, or move the notch to the second outlet. A valve is arranged to open the second discharge port.

The present invention also provides a first valve box having a cylindrical shape, a first inlet for fluid opened at an outer peripheral portion of the first valve box, and a first discharge port for fluid opened at the first valve box. , a first rotating body that rotates within the first valve box; a first drive unit that rotates the first rotating body ; a first valve body that closes a first inlet ; the first rotating body is an impeller in which a plurality of fan-shaped fan openings are formed; The first valve body has a slit shape extending in the axial direction, and the outer circumference of the first valve body is arcuate so as to be able to close the slit-shaped first inlet. A recess is formed in the axial direction, and the length of the recess in the axial direction is larger than the length of the slit-shaped first inlet . Either the rotating body is rotated and the first valve body is placed at the position of the first inlet to close the first inlet , or the first valve body is placed at a position other than the first inlet. and a valve disposed at and opening the first inlet .

The present invention also provides a cylindrical second valve box, a second inlet for fluid opened at an outer peripheral portion of the second valve box, and a second outlet for fluid opened at the second valve box. , a second rotating body that rotates within the second valve box; a second drive unit that rotates the second rotating body ; a second valve body that closes an inflow port , the second rotating body is an impeller in which a plurality of fan-shaped fan openings are formed, and the second inflow port is a valve body that closes an inflow port; The cylindrical second valve body has a slit shape extending in the axial direction, and a notch is formed in the axial direction, and the outer peripheral part of the second rotating body in which the notch is formed is A passage port for the fluid is formed by a cutout, and the length of the cutout in the axial direction is larger than the length of the slit-shaped second inflow port, and the second drive unit 2. Rotate the rotating body to place the second valve body at the second inlet to close the second inlet , or move the notch to the second inlet. and a valve arranged to open the second inlet .

According to the present invention, by rotating the rotating body at high speed, switching between when the valve body closes the discharge port and when the valve body opens the discharge port can be performed at high speed.

Further, according to the present invention, by rotating the first rotating body at high speed, the time during which the first discharge port is closed by the first valve body can be shortened, thereby preventing the coating liquid from being applied to the web. The length of the uncoated part can be shortened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of an intermittent coating apparatus showing Embodiment 1 of the present invention. FIG. 2 is a plan view of a web coated intermittently. It is a schematic explanatory view of the 1st valve|bulb and the 2nd valve|bulb when coating the coating part. It is a schematic explanatory view of the 1st valve|bulb and the 2nd valve|bulb when forming an uncoated part. FIG. 3 is an exploded perspective view of the first valve. FIG. 3 is a vertical cross-sectional view of the first bulb seen from the side. 7 is a cross-sectional view taken along line AA in FIG. 6. FIG. It is a longitudinal cross-sectional explanatory view showing the positional relationship between the first valve body and the first discharge port. FIG. 3 is an explanatory plan view showing the positional relationship between the first valve body and the first discharge port. FIG. 3 is an exploded perspective view of the second valve. FIG. 7 is a longitudinal cross-sectional view of the second bulb seen from the side. 11 is a sectional view taken along line BB in FIG. 10. FIG. FIG. 7 is an explanatory longitudinal cross-sectional view showing the positional relationship between the second valve body and the second discharge port. FIG. 7 is an explanatory plan view showing the positional relationship between the second valve body and the second discharge port. FIG. 7 is a schematic explanatory diagram of the first valve and the second valve when coating the coating section in Embodiment 2. FIG. FIG. 7 is a schematic explanatory diagram of the first valve and the second valve when forming an uncoated portion in Embodiment 2. FIG.

A rotary first valve 100, a second valve 200, and an intermittent coating apparatus 1 using the same according to an embodiment of the present invention will be described with reference to the drawings.

The intermittent coating device 1 of the present embodiment alternately coats coated portions and uncoated portions of the web W along the running direction, and the web W may be made of, for example, film, paper, or metal. These include foil, metal mesh, etc. In addition, in this specification, "cylindrical shape" is a concept that includes "annular shape" and "ring shape."

Embodiment 1

The rotary first valve 100, the second valve 200, and the intermittent coating apparatus 1 using the same according to the first embodiment will be described with reference to FIGS. 1 to 14.

(1) Intermittent coating device 1
The intermittent coating device 1 will be explained with reference to FIGS. 1 and 2.

As shown in FIG. 1, the web W runs on the right peripheral surface of the backup roll 12 from bottom to top. A die 14 for applying a coating liquid is provided on the right side of the backup roll 12. The die 14 consists of an upper body 16 and a lower body 18, and the left side of the upper body 16 is formed into a triangular shape that becomes narrower toward the tip. The lower body 18 is also formed into a triangular shape that becomes narrower toward the left side. A liquid reservoir 20 is formed on the upper peripheral surface of the lower body 18. A liquid passage 22 is formed from this liquid reservoir 20 toward the tip of the die 14. That is, the liquid passage 22 is formed between the lower surface of the upper body 16 and the upper surface of the lower body 18. A discharge port 24 is formed at the tip of this liquid passage 22 . This discharge port 24 has a slit shape along the width direction of the web W. A supply port 26 is formed from the liquid reservoir 20 toward the lower surface of the lower body 18 .

A coating liquid is stored in the tank 28. The coating liquid stored in the tank 28 is pumped by a pump 30 at a constant rate per unit time. The coating liquid pumped from the pump 30 is sent to the first branch pipe 34 and the second branch pipe 36 via the branch part 32. The coating liquid supplied to the first branch pipe 34 passes through the first valve 100 and is supplied from the first supply pipe 38 to the supply port 26 of the die 14 . On the other hand, the coating liquid branched to the second branch pipe 36 at the branch part 32 passes through the second valve 200 and is circulated from the second supply pipe 40 to the tank 28 .

The intermittent coating device 1 has a control unit 50 made of a computer, and the control unit 50 includes a roll motor 42 that rotates the backup roll 12, a pump 30, a first motor 130 that drives the first valve 100, and a first motor 130 that drives the first valve 100. A second motor 230 that drives two valves 200 is connected.

(2) First valve 100
The rotary first valve 100 will be explained with reference to FIGS. 3 to 8.

The first valve 100 has a cylindrical first valve box 102, as shown in FIG. A disk-shaped first front plate 104 is provided on the surface of the cylindrical first valve box 102 and is closed, and a disk-shaped first back plate 106 is provided on the back surface of the first valve box 102. It's blocked.

A first discharge pipe 108 made of a circular pipe protrudes from the upper part of the outer peripheral surface of the first valve box 102 and is connected to a first supply pipe 38 extending from the die 14 . The bottom surface of the first discharge pipe 108 has a circular opening.

As shown in FIGS. 6 and 7, a first valve seat 118 made of a rectangular parallelepiped is provided on the inner circumferential surface of the first valve box 102 at a portion of the first discharge pipe 108. As shown in FIGS. The first valve seat 118 is formed thicker than the first valve box 102, and only M1 of the inner circumferential surface of the first valve seat 118 protrudes from the inner circumferential surface of the first valve box 102 (Fig. 8(c)). As shown in FIGS. 8 and 9, a slit-shaped first discharge port 120 is formed in the axial direction of the first valve seat 118.

As shown in FIG. 5, a circular first inlet 122 is opened in the first top plate 104. When the axial direction of the first valve box 102 is arranged horizontally and the first discharge port 120 is arranged at the top, as shown in FIG. It opens below the shaft 112. As shown in FIGS. 3 and 4, a first branch pipe 34 is connected to the first inlet 122. Thereby, the coating liquid pumped from the pump 30 is branched at the branch part 32 and supplied to the first valve box 102 of the first valve 100.

A first shaft hole 124 passes through the center of the first back plate 106 . A cylindrical first dynalip seal 126 is provided on the inner circumference of the first shaft hole 124 .

A first rotating body 110 is arranged inside the first valve box 102 . As shown in FIG. 5, the first rotating body 110 has a disk shape, and a cylindrical first rotating shaft 112 protrudes from the center. Four fan-shaped first fan openings 114 are provided between the outer circumference of the first rotating body 110 and the first rotating shaft 112. As shown in FIGS. 5 and 7, a first blade 116 whose thickness becomes gradually thinner is formed on one side in the radial direction sandwiched between the outer circumference and the inner circumference of the first fan opening 114. Thereby, the first rotating body 110 plays the role of an impeller.

As shown in FIG. 5, a first valve body 140 is attached to the outer circumference of the first rotating body 110. The first valve body 140 has an arc shape when viewed from the front as shown in FIG. 7, and a rectangle when viewed from above as shown in FIG. 9, and extends in the axial direction of the first valve body 102. There is. The radius of the inner circumference of the first valve box 102 is R1 (see FIG. 7), the protrusion dimension of the first valve seat 118 is M1 (see FIG. 8(c)), and the radius of the first rotating body 110 is R2 (see FIG. 7). ), the radial length M2 of the first valve body 140 is M2=R1-R2-M1. Further, the axial length M3 of the first valve body 140 is set to a dimension that can completely close the slit-shaped first discharge port 120 (see FIGS. 9(a) and 9(c)).

A recess 142 is formed on the outer peripheral surface of the first valve body 140 in the axial direction, as shown in FIGS. 5 and 7 to 9. The length M4 in the axial direction of this recessed portion 142 is formed to be slightly larger than the length N of the slit-shaped first discharge port 120 (see FIGS. 9(a) and 9(c)).

As shown in FIGS. 3 and 4, the circumferential length of the first valve body 140, that is, the first arc opening angle θ1 of the first valve body 140 about the first rotating shaft 112 is It is determined by the first rotational speed ω1 of the engine 110 and the closing time for closing the first discharge port 120. This will be explained in detail later.

As shown in FIG. 6, a cylindrical first support portion 128 is provided outside the first back plate 106 and at the position of the first shaft hole 124. As shown in FIG. As shown in FIG. 6, a first motor 130 made of a servo motor is attached to this cylindrical first support portion 128. Further, first bearings 134 and 136 are disposed on the inner circumference of the cylindrical first support portion 128, and rotatably support the first drive shaft 132 on which the first motor 130 rotates. The first drive shaft 132 of the first motor 130 passes through the first support portion 128, passes through the first dynalip seal 126 of the first shaft hole 124, and is fixed to the first rotation shaft 112 of the first rotation body 110. has been done. As shown in FIG. 6, the first rotating body 110 rotates as the first drive shaft 132 of the first motor 130 rotates.

(3) Second valve 200
Next, the rotary second valve 200 will be explained with reference to FIGS. 3, 4, and 10 to 14.

The second valve 200 has a cylindrical second valve box 202, as shown in FIG. A disk-shaped second front plate 204 is provided on the surface of the cylindrical second valve box 202 to close it off, and a disk-shaped second back plate 206 is provided on the back side of the second valve box 202 to close it off. has been done.

A second discharge pipe 208 made of a circular pipe protrudes from the upper part of the outer peripheral surface of the second valve box 202 and is connected to the second supply pipe 40 . The bottom surface of this second discharge pipe 208 is circularly opened.

As shown in FIGS. 11 and 12, a second valve seat 218 made of a rectangular parallelepiped is provided on the inner peripheral surface of the second valve box 202 at a portion of the second discharge pipe 208. The second valve seat 218 is formed thicker than the second valve box 202, and only m1 of the inner circumferential surface of the second valve seat 218 protrudes from the inner circumferential surface of the second valve box 202 (Fig. 13(a)). As shown in FIGS. 13 and 14, a slit-shaped second discharge port 220 is formed in the axial direction of the second valve seat 218.

As shown in FIG. 10, a circular second inlet 222 is opened in the second top plate 204. When the axial direction of the second valve box 202 is arranged horizontally and the second discharge port 220 is arranged at the top, as shown in FIG. It opens below the shaft 212. As shown in FIGS. 3 and 4, a second branch pipe 36 is connected to this second inlet 222. As a result, the coating liquid pumped from the pump 30 is branched at the branch portion 32 and supplied to the second valve box 202 of the second valve 200 .

A second shaft hole 224 passes through the center of the second back plate 206 . A cylindrical second dynalip seal 226 is provided on the inner circumference of the second shaft hole 224 .

A second rotating body 210 is arranged inside the second valve box 202. As shown in FIG. 10, the second rotating body 210 has a disk shape, and a cylindrical second rotating shaft 212 protrudes from the center. Four fan-shaped second fan openings 214 are provided between the outer circumference of the second rotating body 210 and the second rotating shaft 212 . As shown in FIGS. 11 and 12, a second blade 216 whose thickness becomes gradually thinner is formed on one side in the radial direction sandwiched between the outer circumference and the inner circumference of the second fan opening 214. Thereby, the second rotating body 210 plays the role of an impeller.

A cylindrical second valve body 240 is provided on the outer circumference of the second rotating body 210, as shown in FIGS. 10 and 12. A notch 242 is formed in a part of this cylindrical second valve body 240 in the axial direction. The outer peripheral portion of the second rotary body 210 in which the cutout portion 242 is formed is cut out in a circular shape, as shown in FIGS. 12 and 13, to form a passage hole 244.

The radius of the inner circumference of the second valve box 202 is r1 (see FIG. 12), the protrusion dimension of the second valve seat 218 is m1 (see FIG. 13(a)), and the radius of the second rotating body 210 is r2 (see FIG. 12). ), the radial length m2 of the second valve body 240 is m2=r1-r2-m1. Further, the length m3 in the width direction of the notch 242 of the second valve body 240 is set to a dimension that allows the slit-shaped second discharge port 220 to be completely opened. The axial length m4 is set to a dimension that allows the length n of the slit-shaped second discharge port 220 to be completely opened (see FIGS. 14(a) and 14(c)).

As shown in FIGS. 3 and 4, the length of the second valve body 240 in the circumferential direction, that is, the second arc opening angle θ2 of the second valve body 240 about the second rotating shaft 212 is It is determined by the second rotational speed ω2 of 210 and the closing time for closing the second discharge port 220. This will be explained in detail later.

As shown in FIG. 11, a cylindrical second support portion 228 is provided outside the second back plate 206 at the position of the second shaft hole 224. As shown in FIG. As shown in FIG. 11, a second motor 230 made of a servo motor is attached to this cylindrical second support portion 228. Further, second bearings 234 and 236 are disposed on the inner periphery of the cylindrical second support portion 228, and rotatably support the second drive shaft 232 on which the second motor 230 rotates. The second drive shaft 232 of the second motor 230 passes through the second support portion 228, passes through the second dynalip seal 226 of the second shaft hole 224, and is fixed to the second rotation shaft 212 of the second rotation body 210. has been done. As shown in FIG. 11, the second rotating body 210 rotates as the second drive shaft 232 of the second motor 230 rotates.

(4) Relationship between the first valve 100 and the second valve 200 Next, the relationship between the first valve 100 and the second valve 200 will be explained with reference to FIGS. 2 to 4. The first valve 100 and the second valve 200 are mounted on a frame (not shown) of the intermittent coating device 1 so that the axial direction is horizontal and the first discharge port 120 and the second discharge port 220 are at the top. Attach.

FIG. 2 is a plan view of the web W, in which coated portions 44 and uncoated portions 46 are alternately formed along the running direction. The length of the coated portion 44 is L1, and the length of the uncoated portion 46 is L2. In the die 14, it is necessary to prevent the coating liquid from being pumped from the first valve 100 when forming the coated portion 44, and from pumping the coating liquid from the first valve 100 when forming the uncoated portion 46. There is.

FIG. 3 is a schematic explanatory diagram of the first valve 100 and the second valve 200 when forming the coated part 44, and FIG. 4 is a schematic illustration of the first valve 100 and the second valve 200 when forming the uncoated part 46. and a schematic explanatory diagram of a second valve 200.

As shown in FIGS. 3 and 4, when forming the coating portion 44, the first valve body 140 is located at a location other than the first discharge port 120, and the second valve body 240 closes the second discharge port 220. It is necessary to do so. As a result, the coating liquid is sent only from the first valve 100 to the die 14 and does not circulate from the second valve 200 to the tank 28. On the other hand, when forming the uncoated portion 46, the first valve body 140 closes the first discharge port 120 to prevent the coating liquid from flowing into the die 14. Further, the notch 242 of the second valve body 240 rotates to the position of the second discharge port 220, opens the second discharge port 220, and the coating liquid circulates to the tank 28.

The relationship between the running speed V of the web W and the rotational speed (angular speed) ω will be explained. Note that the rotational speed ω1 of the first rotating body 110=the rotational speed ω2 of the second rotating body 210=ω.

While the first rotating body 110 and the second rotating body 210 are rotating by θ2° at a rotational speed ω, the first discharge port 120 is open, the second discharge port 220 is closed, and the coating liquid is 14, and a coating portion 44 is formed. Since the length of the coating portion 44 is L1,

Opening time of the first discharge port 120 = Closing time of the second discharge port 220 = Coating time t1 = L1/V (1)

becomes. Since the first rotating body 110 and the second rotating body 210 rotate by θ2° during this coating time t1,

Rotational speed ω=θ2/t1 (2)

becomes. From equations (1) and (2),

L1=θ2×V/ω...(3)

On the other hand, while the first rotating body 110 and the second rotating body 210 are rotating by θ1°, the first discharge port 120 is closed, the second discharge port 220 is opened, and the coating liquid is discharged from the die 14. It is not supplied, and an uncoated portion 46 is formed. Since the length of the uncoated part 46 is L2,

Closing time of first discharge port 120 = Opening time of second discharge port 220 = Uncoated time t2 = L2/V (4)

becomes. Since the first rotating body 110 and the second rotating body 210 rotate by θ1° during this uncoated time t2,

Rotational speed ω=θ1/t2 (5)

From equations (3) and (4),

L2=θ1×V/ω...(6)

becomes. Also,

θ2°=360°−θ1°...(7)

It is. From these equations (1) to (7),

L2=(360×V/ω)-L1...(8)

θ1/θ2=L2/L1...(9)

becomes. When the running speed V of the web W is constant and the rotational speed ω of the first rotating body 110 and the second rotating body 210 is increased, from equations (3) and (6), L1 and L2 become proportional to each other. It can be made shorter. Further, the first circular arc opening angle θ1 and the second circular arc opening angle θ2 are determined by the length L1 of the coated portion and the length L2 of the uncoated portion according to equation (9).

(5) Role of the first valve body 140 The first valve body 140 will be explained with reference to FIGS. 7 to 9. The first valve body 140 has a substantially rectangular parallelepiped shape and is elongated in the axial direction. A recess 142 is provided on the outer peripheral surface along the axial direction. On the other hand, the first discharge port 120 penetrates the first valve seat 118 in the axial direction in the form of a slit.

As shown in FIG. 8(c), the first valve seat 118 protrudes from the inner periphery of the first valve box 102 by M1. The outer circumferential surface of the body 140 and the inner circumferential surface of the first valve box 102 are not in contact with each other and can rotate smoothly.

In addition, since the first valve body 140 is long in the axial direction and rotates in a direction that closes the first discharge port 120, a slit is formed as shown in FIGS. The shaped first discharge port 120 can be quickly closed and opened. Therefore, the discharge of the coating liquid from the die 14 can be stopped quickly. Furthermore, even if there is a coating liquid that tries to return from the die 14, since the recess 142 is formed on the outer peripheral surface of the first valve body 140, this liquid back can be absorbed, and the end of the coating part 44 It's hard to get excited.

As shown in FIG. 7, the first rotating body 110 is provided with a first fan opening 114 and has four first blades 116 formed therein. Therefore, the coating liquid that tends to move toward the outer circumference due to the centrifugal force of the rotating first rotating body 110 is guided to the inner circumference by the first blade 116, and the coating liquid inside the first valve box 102 is Can be stirred.

Furthermore, since the first inlet 122 is provided at the lower part of the first front plate 104 as shown in FIG. easily escapes from the first discharge port 120.

Note that in order to set the initial position of the first valve body 140 of the first valve 100, a plate member is inserted through the slit-shaped first discharge port 120, and the first rotating body 110 is rotated. The initial position is the position where the first valve body 140 contacts the plate member and does not rotate any further.

(6) Role of second valve body 240 Next, the second rotating body 210 will be explained with reference to FIGS. 12 to 14. The second valve body 240 of the second rotary body 210 is almost cylindrical, and as shown in FIGS. 13(a) and 13(e), almost blocks the second discharge port 220 in the second valve seat 218. Further, as shown in FIG. 13(c), the second valve seat 218 protrudes by m1 from the inner circumferential surface of the second valve body 202, so that the outer circumferential surface of the second valve body 240 Can rotate without contacting the inner peripheral surface of the

When the notch 242 of the second valve body 240 is located at the second discharge port 220, as shown in FIG. 13(c), the second discharge port 220 opens and the coating liquid can be circulated to the tank 28. At this time, since a circular passage opening 244 is provided on the outer peripheral surface of the second rotary body 210 in the notch 242, the second rotary body 210 does not become an obstacle and the coating liquid is transferred to the second discharge port. 220. On the other hand, since the second discharge port 220 has a slit shape extending in the axial direction, as shown in FIGS. 13(a) to 14(e) and 14(a) to (e), It can be quickly opened and closed at the same time. Therefore, the coating liquid can be drained quickly.

As shown in FIG. 12, the second rotating body 210 is provided with a second fan opening 214 and has four second blades 216 formed therein. Therefore, the coating liquid that tends to move toward the outer circumference due to the centrifugal force of the rotating second rotating body 210 is guided to the inner circumference by the second vane 216, and the coating liquid inside the second valve box 202 is Can be stirred.

Further, as shown in FIG. 12, the second inlet 222 is provided at the lower part of the second top plate 204, so even if air flows into the coating liquid, the air inside the second valve 200 will not flow. It is easy to escape from the second discharge port 220.

Note that, in order to set the initial position of the second valve body 240 of the second valve 200, a plate member is inserted through the slit-shaped second discharge port 220, and the second rotating body 210 is rotated. The initial position is a position where the second valve body 240 contacts the plate member and does not rotate any further.

(7) Effect According to the present embodiment, the first rotating body 110 of the first valve 100 and the second rotating body 210 of the second valve 200 are rotated to alternately open and close the first discharge port 120 and the second discharge port 220. By doing so, coated portions 44 and uncoated portions 46 can be alternately formed on the web W.

Furthermore, by increasing the rotational speeds of the first rotating body 110 and the second rotating body 210, the length L2 of the uncoated portion 46 can be shortened.

Moreover, since the first discharge port 120 has a slit shape extending in the axial direction, it can be opened and closed quickly by the first valve body 140. Further, since the first valve body 140 is formed with the recess 142, liquid back from the die 14 can be absorbed, and a raised portion is less likely to be formed at the end of the coating portion 44.

Moreover, since the second discharge port 220 has a slit shape extending in the axial direction, it can be opened and closed quickly by the second valve body 240.

Further, since the first valve seat 118 of the first valve 100 protrudes from the inner peripheral surface of the first valve box 102, the rotating first valve body 140 does not come into contact with the inner peripheral surface of the first valve box 102. . Further, since the second valve seat 218 of the second valve 200 protrudes from the inner peripheral surface of the second valve box 202, the rotating second valve body 240 does not come into contact with the inner peripheral surface of the second valve box 202. .

(8) Modification example In the above embodiment, the first inlet 122 and the second inlet 222 are provided at the lower part of the first top plate 104 and the second front plate 204, but instead of this, the first inlet 122 and the second inlet 222 are provided at the center or upper part. It may be provided.

Further, in the embodiment described above, the first inlet 122 of the first valve 100 is provided on the first front plate 104, but it may be provided on the outer circumference of the first valve box 102 instead. The second inlet 222 of the second valve 200 may also be provided on the outer periphery of the second valve box 202 in the same manner.

Embodiment 2

Next, the rotary first valve 100, the second valve 200, and the intermittent coating apparatus 1 using the same according to the second embodiment will be described with reference to FIGS. 15 and 16.

The difference between this embodiment and Embodiment 1 is in the first valve 100 and the second valve 200. In the first embodiment, the first valve 100 and the second valve 200 have a structure in which the valve body opens and closes the discharge port, but in this embodiment, the discharge port is always open and the valve body opens and closes the inlet. be.

The first valve 100 will be explained with reference to FIGS. 15 and 16.

A first discharge port 120 and a first inlet port 122 are provided on the outer circumference of the first valve box 102, respectively. The first discharge port 120 is a circular hole that penetrates the first valve box 102.

A first valve seat 118 is provided at the first inlet 122 and protrudes slightly from the inner peripheral surface of the first valve box 102 . A slit-shaped first inlet 122 is provided in the first valve seat 118. This first inlet 122 is open along the axial direction.

The first rotating body 110 rotatably provided inside the first valve box 102 has the same structure as in the first embodiment. A first valve body 140 that closes the first inlet 122 is provided on the outer circumference of the first rotating body 110 . The first valve body 140 supplies or stops the coating liquid flowing in from the first inlet 122 . The first discharge port 120 is always open. When the coating liquid flows in from the first inlet 122, it is supplied to the die 14 from the first discharge port 120, and when the coating liquid stops flowing from the first inlet 122 by the first valve body 140, it is supplied to the die 14. The supply of coating liquid is also stopped.

When the first inlet port 122 is closed with the first valve body 140, liquid back may occur from the die 14. In this case, in the first valve 100 of the second embodiment, the coating liquid backed up from the first discharge port 120 is absorbed by the entire volume inside the first valve box 102, and the coating liquid is absorbed by the first rotating body 110. Due to the impeller performance, no swelling occurs at the terminal end of the coated portion 44.

Note that the length of the first valve body 140 from the rotation axis of the first rotating body 110 is set so as to close the first inlet 122 provided in the protruding first valve seat 118. , the first valve body 140 does not block the first discharge port 120.

Similarly to the first valve 100, the second valve 200 has a structure in which the second valve body 240 closes the second inlet 222.

In addition, as a modification of the second embodiment, the first discharge port 120 may be provided at the upper part of the first front plate 104.

Further, the first valve 100 may have the structure of the second embodiment, and the second valve 200 may have the structure of the first embodiment.

Example of change

In each of the above embodiments, the first valve 100 and the second valve 200 have the same rotational speed, but they may have different rotational speeds. In this case, the diameters of the first valve 100 and the second valve 200 may be changed.

Further, in the above embodiment, the first rotating body 110 and the second rotating body 210 each have four fan openings and are provided with blades, but the impeller structure is not provided with such fan openings. Instead, it may be formed into a simple disk shape.

Further, the first front plate 104, the second front plate 204, the first back plate 106, and the second back plate 206 may be transparent plates. If it is transparent, the state of the coating liquid in the first bulb 100 and the second bulb 200 can be visually confirmed from the outside.

Further, when measuring the internal pressure of the coating liquid in the first valve 100, a pressure sensor is inserted into the first valve box 102 from the outer circumferential portion thereof. The same applies to the second valve 200.

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 forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and gist of the invention, as well as within the scope of the invention described in the claims and its equivalents.

DESCRIPTION OF SYMBOLS 10... Intermittent coating device, 14... Die, 28... Tank, 30... Pump, 50... Control part, 100... First valve, 102... First valve box , 110... first rotating body, 120... first discharge port, 122... first inlet, 130... first motor, 140... first valve body, 200... first 2 valve, 202... second valve box, 210... second rotating body, 220... second discharge port, 222... second inlet, 230... second motor, 240...・Second valve body

Claims (17)

a cylindrical first valve box;
a first inlet for fluid opened in the first valve box;
a first discharge port for the fluid opened at the outer periphery of the first valve box;
a first rotating body rotating within the first valve box;
a first drive unit that rotates the first rotating body;
a first valve body that is provided to protrude from an outer peripheral portion of the first rotating body and that closes the first discharge port;
has
The first rotating body is an impeller in which a plurality of sector-shaped fan openings are formed,
The first discharge port has a slit shape extending in the axial direction of the first rotating body,
The outer circumference of the first valve body is arc-shaped and can close the slit-shaped first discharge port, and the outer circumference of the first valve body has a recess in the axial direction. formed, the length of the recess in the axial direction is larger than the length of the slit-shaped first discharge port,
The first rotating body is rotated by the first driving unit, and the first valve body is placed at the position of the first discharge port to close the first discharge port, or the first valve body is closed. is placed at a position other than the first outlet to open the first outlet;
valve. a cylindrical second valve box;
a second fluid discharge port opened at the outer periphery of the second valve box;
a second inlet for the fluid opened in the second valve box;
a second rotating body rotating within the second valve box;
a second drive unit that rotates the second rotating body;
a second valve body provided in a cylindrical shape on an outer peripheral portion of the second rotating body and closing the second discharge port;
has
The second rotating body is an impeller in which a plurality of sector-shaped fan openings are formed,
The second discharge port has a slit shape extending in the axial direction of the second rotating body,
A notch is formed in the axial direction in the cylindrical second valve body,
The outer peripheral part of the second rotary body in which the notch is formed is cut out to form a passage port for the fluid,
The length of the notch in the axial direction is larger than the length of the slit-shaped second discharge port,
The second rotating body is rotated by the second drive unit, and the second valve body is placed at the position of the second discharge port to close the second discharge port, or the notch is closed. disposed at the position of the second discharge port and opens the second discharge port;
valve. a cylindrical first valve box;
a first inlet for fluid opened at the outer periphery of the first valve box;
a first discharge port for the fluid opened in the first valve box;
a first rotating body rotating within the first valve box;
a first drive unit that rotates the first rotating body;
a first valve body that is provided to protrude from an outer peripheral portion of the first rotating body and that closes the first inlet;
has
The first rotating body is an impeller in which a plurality of sector-shaped fan openings are formed,
The first inlet has a slit shape extending in the axial direction of the first rotating body,
The outer circumference of the first valve body is arc-shaped and can close the slit-shaped first inlet, and the outer circumference of the first valve body has a recess in the axial direction. formed, the length of the recess in the axial direction is larger than the length of the slit-shaped first inlet,
The first rotating body is rotated by the first driving unit, and the first valve body is arranged at the position of the first inlet to close the first inlet, or the first valve body is closed. opening the first inlet by arranging it at a position other than the first inlet;
valve. a cylindrical second valve box;
a second inlet for fluid opened at the outer periphery of the second valve box;
a second discharge port for the fluid opened in the second valve box;
a second rotating body rotating within the second valve box;
a second drive unit that rotates the second rotating body;
a second valve body provided in a cylindrical shape on the outer circumference of the second rotating body and closing the second inlet;
has
The second rotating body is an impeller in which a plurality of sector-shaped fan openings are formed,
The second inlet has a slit shape extending in the axial direction of the second rotating body,
A notch is formed in the axial direction in the cylindrical second valve body,
The outer peripheral part of the second rotary body in which the notch is formed is cut out to form a passage port for the fluid,
The length of the notch in the axial direction is larger than the length of the slit-shaped second inlet,
The second rotating body is rotated by the second drive unit, and the second valve body is placed at the position of the second inlet to close the second inlet, or the notch is closed. disposed at the position of the second inlet and opening the second inlet;
valve. The first inlet is provided on one surface of the first valve box or on the outer periphery of the first valve box.
A valve according to claim 1. The arcuate opening angle of the first valve body about the rotation axis of the first rotary body becomes larger as the closing time of the first discharge port becomes longer.
A valve according to claim 1. a first valve seat protrudes from an inner circumferential surface of the first valve box;
The first discharge port is open to the first valve seat.
A valve according to claim 1. The first valve box is provided such that the axial direction is horizontal and the first discharge port is located at the top,
The first inlet is opened below the rotation axis of the first rotating body.
A valve according to claim 1. The second inlet is provided on one surface of the second valve box or on the outer periphery of the second valve box.
A valve according to claim 2. The arcuate opening angle of the second valve body about the rotation axis of the second rotating body becomes larger as the closing time of the second discharge port becomes longer.
A valve according to claim 2. a second valve seat protrudes from the inner circumferential surface of the second valve box;
the second discharge port is open to the second valve seat;
A valve according to claim 2. A die that intermittently applies a coating liquid to a running web;
a pump that supplies the coating liquid;
a first valve having a first inlet connected to the pump and a first outlet connected to the die;
In an intermittent coating device having
The first valve is the valve according to claim 1,
The first rotating body is rotated by the first drive unit, and the first valve body is placed at the position of the first discharge port to close the first discharge port and form an uncoated portion in the web. or, arranging the first valve body at a position other than the first discharge port and opening the first discharge port to form a coated portion on the web;
Intermittent coating equipment. further comprising a second valve;
The pump supplies the coating liquid from a tank,
The coating liquid supplied from the pump is branched into a first branch pipe and a second branch pipe,
the first inlet of the first valve is connected to the first branch pipe,
a second inlet of the second valve is connected to the second branch pipe;
a second outlet of the second valve is connected to the tank;
The second valve is the valve according to claim 2,
The second rotating body is rotated by the second drive unit, the second valve body is placed at the position of the second discharge port, the second discharge port is closed, and the coating liquid is circulated to the tank. or disposing the second valve body at a position other than the second discharge port to open the second discharge port and circulate the coating liquid to the tank;
The intermittent coating device according to claim 12. When the first valve body opens the first discharge port, the second valve body closes the second discharge port,
When the first valve body closes the first discharge port, the second valve body opens the second discharge port.
The intermittent coating device according to claim 13. A die that intermittently applies a coating liquid to a running web;
a pump that supplies the coating liquid;
a first valve having a first inlet connected to the pump and a first outlet connected to the die;
In an intermittent coating device having
The first valve is the valve according to claim 3,
The first rotating body is rotated by the first drive unit, the first valve body is placed at the position of the first inlet, the first inlet is closed, and an uncoated portion is formed in the web. or, placing the first valve body at a position other than the first inlet and opening the first inlet to form a coated portion on the web;
Intermittent coating equipment. further comprising a second valve;
The pump supplies the coating liquid from a tank,
The coating liquid supplied from the pump is branched into a first branch pipe and a second branch pipe,
a first inlet of the first valve is connected to the first branch pipe;
a second inlet of the second valve is connected to the second branch pipe;
a second outlet of the second valve is connected to the tank;
The second valve is the valve according to claim 4,
The second rotating body is rotated by the second drive unit, the second valve body is placed at the position of the second inlet, the second inlet is closed, and the coating liquid is circulated to the tank. or disposing the notch at the position of the second inlet to open the second inlet and circulate the coating liquid to the tank;
The intermittent coating device according to claim 15. When the first valve body opens the first inflow port, the second valve body closes the second inflow port,
When the first valve body closes the first inlet, the second valve body opens the second inlet.
The intermittent coating device according to claim 16.

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