JP2019107633A - Valve, intermittent coating device with use of valve - Google Patents

Abstract

To provide a valve which quickly performs opening/closing.SOLUTION: A valve has: a valve main body 82; an inlet 86 and an outlet 88; a valve seat 96 provided in the outlet 88; a valve body 94 which opens/closes an opening of the valve seat 96; a shaft 98 which linearly moves the valve body 94; a rack 104 which linearly moves the shaft 98; a pinion 108 which is engaged with the rack 104; and a motor 106 which rotates the pinion 108. The valve body 94 is moved by rotation of the motor 106, thereby so making the outlet 88 as to be in an open state or a closed state.SELECTED DRAWING: Figure 3

Description

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

  Conventionally, an intermittent coating apparatus has been proposed in which a coating liquid is intermittently coated on a long web such as a film, fabric, paper, metal foil, metal mesh or the like (see, for example, Patent Document 1).

  This conventional intermittent coating apparatus has a valve between a pump for supplying a coating liquid and a die in order to alternately form an uncoated section and a coated section by a die on a web transported on a backup roll. When forming an uncoated section, close this valve and stop the supply of the coating liquid to the die. On the other hand, when forming a coated section, open this valve and apply to the die Supply the solution.

JP, 2012-47245, A

  In order to form the coated section and the non-coated section as described above on the web in a clean manner, it is necessary to quickly open and close the valve.

  Therefore, in view of the above problems, the present invention has an object to provide a valve capable of quickly and easily opening and closing the valve, and an intermittent coating apparatus using the valve.

  According to a first embodiment of the present invention, a valve body, an inlet for fluid provided to the valve body, an outlet for the fluid provided to the valve body, and an valve body provided inside the valve body A fluid passage space connecting the outlets, a valve seat provided in the outlet inside the valve body, a valve body for opening and closing the opening of the valve seat, and a shaft for linearly moving the valve body; A rack for linearly moving the shaft, a pinion engaged with the rack, and a motor for rotating the pinion, the valve body being moved by the rotation of the motor to open or close the outlet It is a valve to put in a state.

  According to a second embodiment of the present invention, there is provided a valve body, a fluid inlet provided to the valve body, a first outlet for the fluid provided to the valve body, and the fluid provided to the valve body. A second outlet provided in the valve body, a passage space of the fluid connecting the inlet, the first outlet, and the second outlet, and a first outlet provided in the first outlet in the valve body. A valve seat, a first valve body for opening and closing an opening of the first valve seat, a first shaft for linearly moving the first valve body, a first rack for linearly moving the first shaft, and The first pinion engaged with the first rack, the first motor for rotating the first pinion, the second valve seat provided in the second outlet inside the valve body, and the second valve seat The second valve body which opens and closes the opening, and the second valve body is moved linearly A second rack for moving the second shaft linearly, a second pinion engaged with the second rack, and a second motor for rotating the second pinion, (1) The first valve is moved by the rotation of the motor to open or close the first outlet, and the second valve is moved by the rotation of the second motor to open the second outlet. Or a closed valve.

  According to a third embodiment of the present invention, there is provided a backup roll for conveying a web, a die for applying a coating liquid to the web disposed on the outer periphery of the backup roll, and the valve according to the second embodiment A tank for storing the coating liquid, a pump for supplying the coating liquid from the tank to the inlet of the valve, and a control unit, the control unit including: (1) the first part of the valve The first outlet is opened by the motor, and the second outlet is closed by the second motor, and the coating liquid flowing from the inlet is supplied to the die from the first outlet, and the web is applied to the web. Coating the coating liquid to form a coating section; (2) closing the first outlet by the first motor of the valve, and opening the second outlet by the second motor Flow from the inlet The coating liquid was circulated to the tank from the second outlet, and forming the uncoated section without web to coating the coating solution, it is intermittent coating apparatus for performing alternately.

  According to this embodiment, when the pinion is rotated by the motor and the rack moves linearly, the piston also moves linearly at the same time, and the valve body can quickly open and close the valve seat. Therefore, if it is an intermittent coating apparatus using this valve, intermittent supply of the coating liquid in the case of forming a coating area and an uncoated area with respect to a web can be performed rapidly.

It is explanatory drawing of the intermittent coating apparatus using the valve | bulb of Embodiment 1 of this invention. It is explanatory drawing of a valve. FIG. 7 is an explanatory view of a valve of Embodiment 2;

  Hereinafter, a valve according to an embodiment of the present invention will be described with reference to the drawings.

Embodiment 1

  First, the intermittent coating apparatus 10 using the valve 30 of Embodiment 1 will be described with reference to FIGS. 1 and 2. The intermittent coating apparatus 10 of the present embodiment intermittently applies a coating liquid to a long web W such as a film, fabric, paper, metal foil, metal mesh, etc. The coated section W1 and the uncoated section W2 are alternately formed.

(1) Configuration of Intermittent Coating Apparatus 10 The intermittent coating apparatus 10 includes a valve 30, a backup roll 12 for transporting the web W, a die 14 for intermittently coating the coating liquid on the web W, a tank 16 for the coating liquid, It has the pump 18 and the control part 20 which supply a fixed quantity of a coating liquid.

  The die 14 is disposed on the left side of the backup roll 12 and includes an upper main body 22 and a lower main body 24. The die 14 is tapered toward the tip. A liquid reservoir 26 is provided on the upper surface of the lower main body 24, and a liquid passage is provided between the upper main body 22 and the lower main body 24 and in the direction of the tip of the liquid reservoir 26. The tip of the liquid passage constitutes a slit-like discharge port of the coating liquid.

  The pump 18 supplies a constant amount of coating liquid per unit time from the tank 16 to the valve 30 at a predetermined rotation speed. The control of the rotation, stop and rotational speed of the pump 18 is performed by the control unit 20.

  The valve 30 supplies the coating liquid supplied from the pump 18 to the liquid reservoir 26 of the die 14 under the control of the controller 20 or circulates the coating liquid to the tank 16. The configuration of the valve 30 will be described below.

(2) Valve 30
The configuration of the valve 30 will be described with reference to FIG. The metal valve body 32 of the valve 30 has a substantially cylindrical shape, and a passage space 34 is formed therein. An inlet 36 is formed at one end of the cylindrical passage space 34 and is connected to the pump 18 by a pipe.

  A first outlet 38 is formed on the outer peripheral portion of the other end of the cylindrical valve body 32. The first outlet 38 is connected to the reservoir 26 of the die 14 by a pipe. A first open valve 42 is provided inside the first outlet 38. The first open valve 42 has a first valve seat 46 provided on the inner peripheral portion of the first outlet 38, and a first valve body 44 closing the opening of the first valve seat 46, The valve body 44 is provided with a first shaft 48. The first shaft 48 is linearly moved by a first opening and closing actuator 50 provided outside the valve body 32. The first opening and closing actuator 50 is provided with a first packing 52 for preventing the coating liquid in the passage space 34 from leaking while the first shaft 48 linearly moves. The first shaft 48 penetrates the first packing 52 and projects into the first opening / closing actuator 50. At the other end of the first shaft 48, a first rack 54 is provided on the same line. Further, a first motor 56 composed of a servomotor is provided inside the first opening / closing actuator 50, a first pinion 58 is provided on an output shaft of the first motor 56, and is screwed with the first rack 54 . As a result, when the first motor 56 rotates, the first pinion 58 also rotates, whereby the first rack 54 linearly moves to linearly move the first shaft 48. Then, the first valve body 44 opens and closes the first valve seat 46.

  A second outlet 40 is formed on the outer periphery of the valve body 32 between the first outlet 38 and the inlet 36. The second outlet 40 is connected to the tank 16 by a pipe. A second open valve 62 is provided inside the second outlet 40. The second open valve 62 has a second valve seat 66 provided on the inner peripheral portion of the second outlet 40, and a second valve body 64 for closing the opening of the second valve seat 66. The valve body 64 is provided with a second shaft 68. The second shaft 68 is linearly moved by a second opening and closing actuator 70 provided outside the valve body 32. The second opening and closing actuator 70 is provided with a second packing 72 for preventing the coating liquid in the passage space 34 from leaking while the second shaft 68 linearly moves. The second shaft 68 penetrates the second packing 72 and protrudes into the second opening / closing actuator 70. At the other end of the second shaft 68, a second rack 74 is provided on the same line. Further, a second motor 76 comprising a servomotor is provided inside the second opening / closing actuator 70, a second pinion 78 is provided on an output shaft of the second motor 76, and is engaged with the second rack 74 . As a result, when the second motor 76 rotates, the second pinion 78 also rotates, whereby the second rack 74 linearly moves to linearly move the second shaft 68. Then, the second valve body 64 opens and closes the second valve seat 66.

(3) Control Method of Intermittent Coating Apparatus 10 Next, a method of intermittently coating the web W by the control unit 20 using the intermittent coating apparatus 10 will be described with reference to FIGS. 1 and 2.

  The control unit 20 rotates the backup roll 12 in accordance with the transport speed of the web W.

  The control unit 20 always supplies a constant coating liquid per unit time to the inlet 36 of the valve 30 by the pump 18.

  When the coating section is formed on the web W, the control unit 20 closes the second open valve 62 of the valve 30 and opens the first open valve 42. As a result, the coating liquid flows from the tank 16 to the die 14 and the coating liquid does not circulate in the tank 16.

  Next, when a coating section having a predetermined length is formed on the web W by the die 14, the control unit 20 rotates the first motor 56 to operate the first pinion 58 and the first rack 54. The first shaft 48 is linearly moved, the first valve body 44 closes the first valve seat 46, and the first open valve 42 is closed. On the other hand, at the same time, the control unit 20 rotates the second motor 76 to linearly move the second shaft 68 by the action of the second pinion 78 and the second rack 74, and from the second valve seat 66 to the second valve body The second release valve 62 is opened. As a result, the coating liquid that has been flowing to the die 14 circulates from the second outlet 40 to the tank 16 because the first open valve 42 is closed and the second open valve 62 is open.

  Next, when the formation of the uncoated section having a predetermined length in the web W is completed and the coated section is formed again, the control unit 20 rotates the first motor 56 to open the first opening. The valve 42 is opened, and the second motor 76 is rotated to close the second open valve 62. Thus, the coating liquid circulating in the tank 16 is supplied to the die 14 to start forming a coating section.

(4) Effects According to the present embodiment, the opening and closing operation of the first open valve 42 and the second open valve 62 is performed by the first motor 56 and the second motor 76 which are servomotors, and the first shaft 48 and the second Since the linear movement of the shaft 68 is performed by the action of the first pinion 58 and the first rack 54 and the action of the second pinion 78 and the second rack 74, the linear movement of the first valve body 44 and the second valve body 64 is quick. Therefore, high acceleration can be realized and opening and closing can be performed smoothly.

  In addition, due to the operation of the rack and the pinion, the parts can be simplified, the moment of inertia of each part when converting the rotational movement into the linear movement can be reduced, and high acceleration of the opening and closing movement can be realized. Therefore, the swelling of the coating liquid at the start point and the end point of the coated section and the uncoated section in the web W can be minimized.

(5) Modifications In the above embodiment, the die 14 is disposed on the side of the backup roll 12, but instead, it may be disposed below the backup roll 12.

Embodiment 2

  Next, the valve 80 of the second embodiment will be described with reference to FIG.

  As shown in FIG. 3, in the valve 80 of the present embodiment, a passage space 84 is provided inside the valve body 82, and the passage space 84 is provided with one inlet 86 and one outlet 88. An open valve 92 is provided inside the outlet 88. The open valve 92 has a valve seat 96 provided on the inner periphery of the outlet 88 and a valve body 94 for closing the opening of the valve seat 96. The valve body 94 is provided with a shaft 98 . The shaft 98 is linearly moved by an opening and closing actuator 100 provided outside the valve body 82. The opening / closing actuator 100 is provided with a packing 102 for preventing the coating liquid in the passage space 84 from leaking while the shaft 98 linearly moves. The shaft 98 penetrates the packing 102 and protrudes inside the opening / closing actuator 100. At the other end of the shaft 98, a rack 104 is provided on the same line. Further, a motor 106 composed of a servomotor is provided inside the open / close actuator 100, and a pinion 108 is provided on an output shaft of the motor 106 and is screwed with the rack 104. As a result, when the motor 106 rotates, the pinion 108 also rotates, which causes the rack 104 to move linearly and move the shaft 98 linearly. Then, the valve body 94 opens and closes the valve seat 96.

  As an application place of valve 80, it is used, for example, in a place which intercepts a flow of a coating liquid in a coating device, or makes it pass.

Modified example

  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 modifications can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 10 ... Intermittent coating apparatus, 12 ... Backup roll, 14 ... Die | dye 16, 16 ... Tank, 18 ... Pump, 20 ... Control part, 30 ... Valve | bulb 32, 32 .. · Valve body, 34 · · · Passing space, 36 · · · · · · · · · · · · · · · 1 first outlet, 40 · · · second outlet, 42 · · · first open valve, 54 · · · first rack, 56: first motor 58: first pinion 62: second open valve 74: second rack 76: second motor 78: second pinion

Claims (6)

With the valve body,
A fluid inlet provided in the valve body;
An outlet of the fluid provided in the valve body;
A fluid passage space provided inside the valve body and connecting the inlet and the outlet;
A valve seat provided in the outlet inside the valve body;
A valve body for opening and closing the opening of the valve seat;
A shaft for linearly moving the valve body;
A rack for linearly moving the shaft;
A pinion engaged with the rack;
A motor for rotating the pinion;
And moving the valve by rotation of the motor to open or close the outlet,
valve. The motor is a servomotor,
The valve of claim 1. With the valve body,
A fluid inlet provided in the valve body;
A first outlet of the fluid provided in the valve body;
A second outlet for the fluid provided in the valve body;
A fluid passage space provided inside the valve body and connecting the inlet, the first outlet, and the second outlet;
A first valve seat provided in the first outlet inside the valve body;
A first valve body for opening and closing an opening of the first valve seat;
A first shaft for linearly moving the first valve body;
A first rack for linearly moving the first shaft;
A first pinion engaged with the first rack;
A first motor for rotating the first pinion;
A second valve seat provided in the second outlet inside the valve body;
A second valve body for opening and closing an opening of the second valve seat;
A second shaft for linearly moving the second valve body;
A second rack for linearly moving the second shaft;
A second pinion engaged with the second rack;
A second motor that rotates the second pinion;
Have
The first valve body is moved by the rotation of the first motor to open or close the first outlet,
The second valve body is moved by the rotation of the second motor to open or close the second outlet.
valve. The first motor and the second motor are servomotors.
The valve according to claim 3. A backup roll for transporting the web,
A die for applying a coating liquid to the web disposed on the outer periphery of the backup roll;
A valve according to claim 3;
A tank storing the coating liquid;
A pump for supplying a coating liquid from the tank to the inlet of the valve;
And a control unit,
The control unit
(1) The first outlet motor is opened by the first motor of the valve, and the second outlet is closed by the second motor, and the coating liquid introduced from the inlet is discharged from the first outlet. Supplying to the die and applying the coating liquid to the web to form a coating section;
(2) The first outlet motor is closed by the first motor of the valve, and the second outlet is opened by the second motor, so that the coating liquid introduced from the inlet is discharged from the second outlet. Circulating in the tank, forming the uncoated section without applying the coating liquid to the web;
Intermittent coating device that performs alternately. The die is provided to the side or under of the backup roll,
The intermittent coating device according to claim 3.

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