JP4608792B2 - Air flow suppression device for web entrance / exit opening - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air flow suppression device for a web entrance / opening opening that can suppress the flow of air passing through an opening serving as a web entrance / exit of an air-conditioning chamber or an air dryer web when coating is performed by a curtain coater. It is.
[0002]
[Prior art]
Paper manufactured at paper mills is rarely used as it is, and is often processed into processed paper that meets the required purpose. One of these is coated paper. (Coated paper).
[0003]
The coated paper will be described as an example. There are various coating machines for producing the coated paper. For example, in the case of a curtain coater, as shown in FIG. Is wound around the coater roll 2 and then travels along the guide roll 7 so that the coating liquid 3 is applied to the upper position of the base paper 1 located between the coater roll 2 and the guide roll 7. A curtain coater head (liquid supply head) 4 that flows down in the form of a curtain film is arranged, and the coating liquid 3 flowing down from the curtain coater head 4 is allowed to flow down to the surface of the base paper 1, whereby the coating liquid 3 Is applied directly onto the base paper 1, and the atmosphere around the curtain coater head 4 must be maintained at a constant temperature and a humidity below a certain level. A room is formed so as to surround a portion of the base paper 1 traveling in the vicinity of the curtain coater head 4, and an air conditioning room 5 is provided. Air conditioning of the temperature and humidity inside the air conditioning room 5 is performed. . The base paper 1 having a coating liquid film formed on the surface by the coating liquid 3 flowing down from the curtain coater head 4 is provided with a hot air blowing nozzle device in a room installed on the downstream side of the curtain coater head 4. The air is guided to the air dryer 6 and continuously dried while running.
[0004]
By the way, the portion where the base paper 1 travels through the wall of the room, such as the entrance / exit of the air-conditioning chamber 5 of the curtain coater or the air dryer 6, allows the base paper 1 to pass through the wall 8 as shown in FIG. An opening 9 having a required length and width is provided, and the opening 9 in the width direction of the base paper 1 is formed on the inner wall surface and the outer wall surface of the upper and lower edge portions in the width direction of the opening 9. An elongated plate-like shutter 10 extending over the entire length in the longitudinal direction is arranged so as to face each other, the tip portions on the opposite sides of the upper and lower shutters 10 are bent and bent, and the bent tip portion 10a is bent. The facing distance is set so as to be an opening amount based on a required height dimension when passing paper, and the shutter 10 is fixed to the wall 8 by bolts 11.
[0005]
[Problems to be solved by the invention]
However, in the shutter 10 that is fixed so that a necessary opening amount is formed between the leading end portions 10a, a gap with the base paper 1 that travels during the operation operation is greatly open. The opening 9 is not able to sufficiently block the flow of air in the inside and outside directions, so that air enters and exits. The air entering and exiting through the opening 9 is air-conditioned for the curtain coater as shown in FIG. If it occurs at the entrance / exit of the chamber 5, there is a problem that the efficiency of the air conditioning deteriorates, and if it occurs at the entrance / exit of the air dryer 6, the outside air brought along the traveling base paper 1 enters from the entrance side. In addition, since the internal temperature is lowered, drying efficiency is deteriorated and hot air is leaked from the outlet side, so that there is a problem that the surrounding environment may be deteriorated.
[0006]
Incidentally, it is conceivable to adjust and fix the interval between the leading end portions 10a of the shutter 10 provided in the opening 9 after the sheet passing operation of the base paper 1, but in this case as well, it is opposed to the vertical direction. The distance between the leading end portions 10a of the shutter 10 is such that the opening amount in consideration of the fluttering of the traveling base paper 1 so that there is no risk of contact with the shutter 10 even if the base paper 1 traveling at the time of an operation operation flickers. In other words, the distance between the shutter 10 and the traveling base paper 1 cannot be made very narrow, and the air flow in the opening 8 cannot be sufficiently prevented.
[0007]
Therefore, the present invention seeks to provide an air flow suppression device for a web entrance / exit opening that can suppress the flow of air at an opening serving as a web entrance / exit provided on a wall of a room arranged so as to surround a traveling web. Is.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides an opening serving as an entrance / exit of a web on a wall on the web traveling direction side of a room formed so as to surround a part of the traveling web so as to extend over the entire length in the width direction of the web. A long shutter is provided on the outer wall surface or the inner wall surface of the upper and lower edges of the opening so as to be opposed to the opening so as to be slidable in the width direction of the opening. An actuator for changing the amount of protrusion to the opening is attached to the shutter, and a sensor that detects the position of the web that passes through the opening and a direction in which the actuators are opposed to each other based on the detection signal of the sensor and issued in synchronization with expansion operation causes command and a controller to widen or narrow the intervals of the shutter, the flow of air at inlet and outlet of the web passing through the opening A configuration which is adapted to suppress.
[0009]
When the web travels, if the travel is stable, the position passing through the opening of the web is detected by a sensor, and each actuator is extended by the controller corresponding to the detected web travel position. Thus, the distance between each shutter and the base paper is controlled to be small. When the traveling position of the traveling web changes, the change is detected by a sensor, so that the controller issues a contraction command to each actuator so as to correspond to the changed traveling position of the web. The distance between the upper and lower shutters facing each other is increased so that the distance between the upper and lower shutters is kept small. After that, when the travel of the base paper becomes stable again, the distance between the shutters is narrowed again and the gap between the base papers is controlled to be small. Therefore, the distance between the web and the shutter is always kept small. Air circulation at the opening of the wall serving as the doorway is suppressed.
[0010]
Further, an opening serving as an entrance / exit of the web is provided in the wall on the web running direction side of the room formed so as to surround a part of the running web so as to extend over the entire length in the width direction of the web, and the upper and lower edges of the opening A shutter having a tip positioned at the opening is opposed to the outer wall surface and the inner wall surface of the opening portion so as to be slidable in the width direction of the opening portion, and both the outer wall surface side and the inner wall surface side of the opening portion are disposed. An actuator for integrally connecting a shutter with a connecting member passing through the opening and changing the amount of protrusion of the both shutters to the opening on both the inner wall surface side and the outer wall surface side the attachment further sensor and said pusher and on the basis of a detection signal of the sensor and emitting a telescopic actuating make instruction in synchronism in opposite directions to each actuator for detecting the position of the web passing through the opening And a controller that widen or narrow the spacing of data, by adopting a configuration which is adapted to inhibit the flow of air at inlet and outlet of the web passing through the opening, the shutter provided on the inner and outer surfaces side of the opening As a result, the effect of suppressing the air flow at the opening can be enhanced.
[0011]
Further, the wall surface of the counter-opening side position than the position of the upper and lower shutters, by a configuration in which a base end side of each shutter is provided a cover for covering over the longitudinal entire length of the back wall and the shutter Since the air passing through the gap can be blocked, the air flow suppressing effect at the opening can be further enhanced.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
1 (a) and 1 (b) show an embodiment of the air flow suppressing device for a web entrance / exit opening according to the present invention, and the upper and lower sides of the opening 9 of the wall 8 are the same as those shown in FIG. The shutter 10 having the same external shape as the shutter 10 shown in FIG. 5 is arranged on the outer surface side of the edge portion in the vertical direction so that the tip portions 10a protrude into the opening 9 with the back surface in contact with the wall. In the opposed arrangement, instead of the fixed arrangement as shown in FIG. 5, it can be moved in the vertical direction. That is, each of the upper and lower shutters 10 in the present invention is engaged with guide rails 12 extending in the vertical direction at both ends in the longitudinal direction and slidably supported in the vertical direction. A plurality of actuators 13 such as fluid pressure cylinders are installed in the direction of the opening 9 on the outer wall surface of the wall 8 that is located on the side opposite to the opening 9 at the required interval position in the longitudinal direction of each shutter 10. The front end portions of the 13 actuating rods 14 are attached to the corresponding surfaces of the shutters 10 via mounting members 15, and the actuators 13 are extended and contracted, thereby moving the front end portions 10 a of the shutters 10 to the openings 9. The amount of protrusion can be changed, and further, the position of the base paper 1 that travels and passes through the opening 9 is obliquely above the outside of the opening 9. A sensor 16 is disposed for taking out, and a distance between the running paper 1 and the shutter 10 is calculated based on a detection signal from the sensor 16, and an operation command is issued to each actuator 13 according to the calculation result. Assume that the controller 17 is provided.
[0014]
The controller 17 moves the upper and lower portions of the opening 9 so that the distance between the front end portion 10a of each shutter 10 disposed opposite to the opening 9 in the up-down direction is a predetermined small distance from the traveling base paper 1. The actuator 13 on both sides is adjusted by extending and contracting in synchronization with the opposing direction so as to suppress air circulation.
[0015]
Now, when the base paper 1 is passed through the opening 9, the controller 17 widens the distance between the shutters 10 above and below the opening 9 to increase the opening, so that the paper passing operation can be easily performed.
[0016]
When the base paper 1 is run and operated, when the base paper 1 travels stably, the position passing through the opening 9 of the base paper 1 is detected by the sensor 16 and the detected base paper 1 travels. Each controller 13 is extended by the controller 17 corresponding to the position, and each shutter 10 is slid so that the front end 10a side protrudes greatly into the opening 9, so that the distance from the base paper 1 is predetermined. Since it is controlled so as to have a small size, the air flow in the opening 9 is suppressed.
[0017]
On the other hand, when the traveling position of the base paper 1 is changed by the flapping of the traveling base paper 1, the change is detected by the sensor 16, so that each actuator 13 can correspond to the changed travel position of the base paper 1 from the controller 17. A contraction command is issued, and each actuator 13 is contracted to expand the distance between the upper and lower shutters 10 facing each other so that the distance between the fluttered base paper 1 and each shutter 10 becomes a predetermined small size. Thereby, the circulation of air in the opening 9 is suppressed.
[0018]
Thereafter, when the travel of the base paper 1 becomes stable again, the position of the base paper 1 passing through the opening 9 is detected by the sensor 16, and the interval of each shutter 10 is narrowed corresponding to the detected position of the base paper 1. Thus, the gap with the base paper 1 is controlled to be a predetermined small size.
[0019]
As described above, even when the base paper 1 is traveling stably or in the unlikely event that flapping occurs, the base paper 1 and the base paper 1 are moved according to the position of the base paper 1 that travels and passes through the opening 9 of the wall 8. Since the distance between the shutter 10 and the shutter 10 can be controlled to be a predetermined small size, the flow of air in and out of the wall 8 through the opening 9 can be minimized, and as shown in FIG. If the apparatus of the present invention is adopted at the entrance / exit of the air conditioning room 5 of such a curtain coater, it is possible to suppress the inflow of outside air into the air conditioning room 5 and the outflow of internal air to the outside, thereby improving the air conditioning efficiency and obtaining an energy saving effect. Can do. Further, if it is adopted at the entrance / exit of the air dryer 6 as shown in FIG. 4, it is possible to suppress the intrusion from the entrance of the air that is rotated around the traveling base paper 1, and to increase the drying efficiency of the air dryer, It is possible to suppress the blowing of hot air from the outlet and to prevent the surrounding environment from deteriorating.
[0020]
Next, FIGS. 2 (a) and 2 (b) show another embodiment of the present invention, and air flow in the web entrance / exit opening having the same configuration as that shown in FIGS. 1 (a) and (b). In the suppressing device, a shutter 10 is also provided on the inner surface side of the wall 8 at the upper and lower edges of the opening 9 so that the inner surface side shutter 10 can be moved in the vertical direction in conjunction with the outer surface side shutter 10. It is a thing. That is, the shutter 10 is arranged on the inner surface side of the wall 8 at the upper and lower edges of the opening 9 so as to be symmetrical with the outer shutter 10 in the inner and outer directions, and the longitudinal direction of the inner shutter 10 Both end portions are supported by guide rails 12 extending in the vertical direction attached to the inner wall surface of the wall 8 so as to be slidable in the vertical direction, and projecting ends to the opening 9 of the shutter 10 on the upper and lower inner surfaces are respectively provided. The shutter 10 on the outer wall surface is slid to the projecting end portion of the shutter 10 on the outer surface side to the opening 9 by a connecting member 18 such as a bolt, and the shutter 10 on the outer wall surface is slid by the expansion / contraction operation of the actuator 13. Can be slid as a unit.
[0021]
In addition, the same components as those shown in FIGS. 1A and 1B are denoted by the same reference numerals.
[0022]
According to the present embodiment, the shutters 10 are provided on both the inner and outer surfaces of the opening 9, and the inner and outer shutters 10 are slid together to adjust the distance from the base paper 1 passing through the opening 9. Therefore, the effect of suppressing air flow in the inner and outer directions of the opening 9 can be enhanced.
[0023]
Next, FIGS. 3 (a) and (b) show still another embodiment of the present invention, and the air flow through the web entrance / exit opening having the same configuration as that shown in FIGS. 1 (a) and (b). In the suppressing device, a cover 19 that covers the base end side of each shutter 10 over the entire length in the longitudinal direction is provided on the outer wall surface of the wall 8 on the side opposite to the opening 9 from the position of each shutter 10 when the actuator 13 is contracted. In addition, both end portions in the longitudinal direction of the respective covers 19 are integrally connected to guide rails 12 provided at both end portions in the longitudinal direction of the respective shutters 10.
[0024]
Other configurations are the same as those shown in FIG. 1, and the same components are denoted by the same reference numerals.
[0025]
According to the present embodiment, since the air passing through the gap between the outer surface of the wall 8 and the rear surface of the shutter 10 can be blocked by the cover 19, the effect of suppressing the air flow in the inner and outer directions of the opening 9 can be enhanced. .
[0026]
It should be noted that the present invention is not limited only to the above-described embodiment. In FIGS. 1 to 3, the actuator 13, the sensor 16, and the controller 17 are all disposed outside the wall 8. These may be provided inside the wall 8, and the number of actuators 13 attached in the longitudinal direction of the shutter 10 can be set as long as the shutter 10 can be slid uniformly in the vertical direction over the entire length in the longitudinal direction. The number of actuators 13 may be increased or decreased freely according to the size of the longitudinal direction of the actuator 10, and when the longitudinal dimension of the opening 9 is small and the total length of the shutter 10 is short, the actuator 13 may be singular. Although described as a fluid pressure cylinder, each shutter can be slid and its sliding amount can be controlled. For example, other types of actuators such as a pinion rack type or a type using a rotating screw shaft and a fixed nut may be adopted, and shutters 10 are provided on both the inside and outside of the wall 8 as shown in FIG. In the configuration, a cover 19 that covers the base end side of the shutter 10 similar to the cover 19 shown in FIGS. 3 (A) and 3 (B) may be provided, and the scope of the present invention is within the scope not departing from the gist of the present invention. Of course, various changes can be made.
[0027]
【The invention's effect】
As described above, according to the air flow restriction device for a web entrance / exit opening of the present invention, an opening serving as a web entrance / exit is provided on a wall on the web running direction side of a room formed so as to surround a part of the running web. A long shutter can be slid in the width direction of the opening on the outer wall or inner wall of the upper and lower edges of the web. And an actuator for changing the amount of protrusion to the opening, and a sensor for detecting the position of the web passing through the opening, and a detection signal of the sensor and a controller that widen or narrow the intervals of the shutter by calling the telescopic operation make instruction in synchronism in opposite directions to each actuator based on, through the opening Since a configuration which is adapted to inhibit the flow of air at inlet and outlet of the web, controlled depending on the position of the base paper passing travels opening position, the distance between the base paper and the shutter, always decreases as Therefore, the flow of air in and out of the wall through the opening can be kept to a minimum, so if it is used at the entrance / exit of the air conditioning room of the curtain coater, the inflow of outside air into the air conditioning room and the outside of the internal air The air-conditioning efficiency can be improved and energy-saving effect can be obtained, and if it is used at the inlet / outlet of the air dryer, it is possible to suppress the intrusion from the air inlet that is carried by the running paper, and the drying efficiency In addition, it is possible to suppress the blowing of hot air from the outlet and to prevent the surrounding environment from deteriorating. An opening serving as a web entrance / exit is provided on the wall on the web running direction side of a room formed so as to surround a part of the web so as to extend over the entire length in the width direction of the web, and outside the upper and lower edges of the opening. On the wall surface and the inner wall surface, a shutter whose tip is positioned at the opening portion is slidably disposed in the width direction of the opening portion, and both the shutters on the outer wall surface side and the inner wall surface side of the opening portion are disposed on the wall surface and the inner wall surface. An actuator for changing the amount of protrusion to the openings of both shutters is attached to the integrally-connected inner wall surface side or outer wall surface side shutter with a connecting member passing through the inside of the opening, Additionally, sensor and spacing of the shutter by calling the telescopic operation make instruction in synchronism in opposite directions to each actuator based on the detection signal of the sensor for detecting the position of the web passing through the opening And a controller that widens or narrows the opening, and the air flow at the entrance / exit of the web that passes through the opening is suppressed. It is possible to enhance the effect of suppressing the air flow in the inner and outer directions of the part, and further, the base end side of each shutter is covered over the entire length in the longitudinal direction on the wall surface at the position opposite to the opening part than the position of the upper and lower shutters. By providing a cover, the air passing through the gap between the wall surface and the back surface of the shutter can be blocked, so that the effect of suppressing air flow in the inside and outside of the opening can be further enhanced. To do.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows an embodiment of an air flow suppression device for a web entrance / exit opening according to the present invention, where (A) is a schematic cut side view, and (B) is a view taken in the direction of arrows A-A in (A). It is.
FIG. 2 is a schematic cut side view showing another embodiment of the present invention.
FIGS. 3A and 3B show still another embodiment of the present invention, in which FIG. 3A is a schematic cut side view, and FIG. 3B is a view taken in the direction of arrows BB in FIG.
FIG. 4 is a schematic diagram showing an example of a conventional curtain coater.
FIG. 5 is a schematic cut side view showing an entrance / exit opening of a base paper as a conventional web.
[Explanation of symbols]
1 Base paper (web)
8 Wall 9 Opening 10 Shutter 10a Tip 13 Actuator 16 Sensor 17 Controller 18 Connecting Member 19 Cover

Claims (3)

An opening serving as an entrance / exit of the web is provided on the wall on the web running direction side of the room formed so as to surround a part of the running web so as to cover the entire length in the width direction of the web. On the outer wall surface or the inner wall surface, a shutter whose tip is positioned at the opening is arranged so as to be slidable in the width direction of the opening, and the amount of protrusion to the upper and lower shutters is changed. actuators respectively attached to, further, by emitting a sensor for detecting the position of the web passing through the opening, the elastic actuation causes instruction in synchronization with each actuator in opposite directions based on the detection signal of the sensor and a controller that widen or narrow the intervals of the shutter, it has a configuration which is adapted to inhibit the flow of air at inlet and outlet of the web passing through the opening Air flow inhibiting device of the web entrance opening, characterized. An opening serving as an entrance / exit of the web is provided on the wall on the web running direction side of the room formed so as to surround a part of the running web so as to cover the entire length in the width direction of the web. On the outer wall surface and the inner wall surface, a shutter whose tip is positioned at the opening portion is disposed so as to be slidable in the width direction of the opening portion, and both shutters on the outer wall surface side and the inner wall surface side of the opening portion are provided. An actuator is connected to the shutter on the inner wall surface side or the outer wall surface side that is integrally connected by a connecting member that passes through the opening portion, and an actuator for changing the amount of protrusion of the both shutters to the opening portion. further, the shutter and originating a sensor for detecting the position of the web, the stretching operation causes a command in synchronization with the respective actuator in opposite directions based on the detection signal of the sensor that passes through the opening And a controller that widen or narrow the gap, air flow inhibiting device web doorway opening and having a configuration which is adapted to inhibit the flow of air at inlet and outlet of the web passing through the opening. 3. The air flow restriction of the web entrance / exit opening according to claim 1, wherein a cover that covers the base end side of each shutter over the entire length in the longitudinal direction is provided on the wall surface on the side opposite to the opening from the position of the upper and lower shutters. apparatus.

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