JP2023087553A - Thermal processing apparatus for web - Google Patents

Abstract

To provide a thermal processing apparatus for a web capable of slowly opening a horizontal opening door even if a thermal processing chamber is inclined.SOLUTION: A thermal processing chamber 10 is provided so as to be inclined at an inclination angle θ° (0°<θ°<45°) with respect to a horizontal plane. A door 20 are freely opened and closed and are opened horizontally from a higher part to a lower part in a left side wall 12 of the inclined thermal processing chamber 10. A base part of a cylinder body 46 of an air cylinder 44 is connected to the left side wall 12 above the door 20, the door 20 is connected to an end part of a rod 50 extending from the cylinder body 46, and a speed controller 62 is connected to a first closed space 58 on a side of the rod 50 in the cylinder body 46. The larger the inclination angle θ° is, the smaller a displacement volume per unit time from the speed controller 62 is set.SELECTED DRAWING: Figure 2

Description

The present invention relates to a heat treatment apparatus for webs.

Conventionally, a heat treatment apparatus is provided with a plurality of nozzles along a web transport path inside a heat treatment chamber having heat insulating properties, and the running web is dried by applying hot air from these nozzles to the running web. For the purpose of adjusting the nozzle inside the heat treatment chamber, an opening is provided in the side wall of the heat treatment chamber, and a side-opening door is provided in the opening so as to be freely opened and closed.

JP 2017-116111 A

However, if the heat treatment chamber is slanted, when the door is opened, the door will suddenly open due to its own weight, jeopardizing the safety of the worker, or colliding with the heat treatment chamber and causing damage. was there.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a web heat treatment apparatus in which a lateral door can be slowly opened even if the heat treatment chamber is inclined.

The present invention comprises a heat-insulating heat treatment chamber, nozzles for blowing hot air onto a web running in the front-rear direction inside the heat treatment chamber, and a door provided on a side wall of the heat treatment chamber. , the front and back direction is inclined at an inclination angle θ° (0° < θ° 45°) with respect to the horizontal plane, and the door opens and closes horizontally from the higher side to the lower side of the inclined heat treatment chamber. The base of a cylinder body of an air cylinder is connected to the side wall above or below the door, and the door is connected to the tip of a rod extending from the cylinder body. extends from the cylinder body, connects an exhaust volume adjustment device to the closed space on the rod side in the cylinder body, and the displacement per unit time from the closed space by the exhaust volume adjustment device is determined by the inclination angle θ This web heat treatment apparatus is characterized in that the larger the degree, the smaller the amount of heat.

According to the present invention, the larger the inclination angle of the heat treatment chamber, the smaller the amount of air exhausted per unit time from the closed space on the rod side in the air cylinder, so that the side-opening door can be opened more slowly.

1 is a left side view of a heat treatment apparatus showing an embodiment of the present invention; FIG. It is an enlarged left side view of the third heat treatment chamber. FIG. 11 is a partially cutaway left side view of the third heat treatment chamber; It is a top view in the state where the door was opened. It is an air system diagram for opening and closing a door.

A heat treatment apparatus 1 for a web W according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. The web W may be a long film, metal foil, paper, or the like.

(1) Structure of Heat Treatment Apparatus 1 The overall structure of the heat treatment apparatus 1 will be described with reference to FIG.

A base 2 is provided on a horizontal floor. A mounting table 3 is provided on the horizontal upper surface of the base 2 . The installation table 3 is formed in a so-called arch shape in which the top surface thereof is curved in the front-rear direction in an arcuate shape with respect to the horizontal direction, the front and rear portions being the lowest, and the central portion being the highest.

Ten heat treatment chambers 10 are connected in order in the front-rear direction and installed on the upper surface of the arch-shaped installation table 3 . In FIG. 1, the web W is conveyed from the right side (rear side) of FIG. 1 to the left side (front side). Regarding ten heat treatment chambers 10, the reference number of the rightmost (rear) heat treatment chamber 10 is 10-1, and the subsequent heat treatment chambers 10 are 10-2, . . . , 10-10. Also, the ten heat treatment chambers 10-1, 10-2, . As shown in FIG. 1, heat treatment chambers 10-1, 10-2, 10-3, and 10-4 are provided in the ascending direction of the arch-shaped installation table 3, and heat treatment chambers 10-6, 10-6, and 10-4 are provided in the descending direction. 10-7, 10-8, 10-9, and 10-10 are provided, and each heat treatment chamber 10 is provided inclined with respect to the horizontal plane. However, since the upper surface of the installation table 3 is not a straight inclined surface but an arched surface, the inclination angles θ° (0°<θ°<45°) of the respective heat treatment chambers 10 are different from each other. ing.

(2) Heat treatment chamber 10
Next, as an example of the ten heat treatment chambers 10, the third heat treatment chamber 10-3 from the right will be described with reference to FIGS. 2 to 5. FIG.

The heat treatment chamber 10-3 is a rectangular parallelepiped having heat insulation properties and is elongated in the front-rear direction. The heat treatment chamber 10-3 is provided on the arch-shaped installation table 3 at an inclination angle of θ3° (0°<θ3°<45°) with respect to the horizontal plane. located higher than the rear. The heat treatment chamber 10-3 is not directly placed on the arch-shaped installation table 3, but is installed on the upper surface of the installation table 3 using four legs 38 provided on the lower surface of the heat treatment chamber 10. ing.

A substantially square opening 14 is provided in the front portion of the left side wall 12 of the heat treatment chamber 10-3, and a side-opening door 16 is provided in the opening 14. As shown in FIG. A substantially square opening 18 is provided in the rear portion of the left side wall 12 of the heat treatment chamber 10, and the opening 18 is provided with a side-opening door 20. As shown in FIG.

The left side wall 12 between the door 16 and the door 20 is provided with windows 22 and 26 made of rectangular heat-insulating glass. The window 22 is provided with a lid 24 and the window 26 is provided with a lid 28 . The lid 24 and the lid 28 are provided with a pair of hinge portions 30, 30 at the upper portions thereof so that they can be opened and closed in the vertical direction. An operator lifts the lid 24 or lid 28 upward and can see the interior of the heat treatment chamber 10-3 through the window 22 or window 26. FIG.

The web W heat-treated in the heat treatment chamber 10-2 is transferred from the heat treatment chamber 10-2 to the rear portion of the heat treatment chamber 10-3, passes through a transport path extending in the front-rear direction inside the heat treatment chamber 10-3, and is subjected to heat treatment. It is carried out from the front part of the chamber 10-3 to the heat treatment chamber 10-4.

A duct 32 extending in the front-rear direction is provided above the conveying path of the web W, and a plurality of nozzles 34 are provided at predetermined intervals on the lower surface of the duct 32 . The nozzle 34 is a rectangular parallelepiped extending in the width direction (horizontal direction) of the web W, and a slit-shaped hot air outlet is provided on the lower surface of the nozzle 34 . A plurality of transport rolls 36 are provided at predetermined intervals below the transport path, and the upper peripheral surfaces of the transport rolls 36 support the web W to transport the web W forward. In addition, an air blower and a heating device (not shown) are provided on the right side wall of the heat treatment chamber 10-3. The hot air is blown over the upper surface of the web W to heat-treat (dry) the web W. When the door 16 or the door 20 is opened, the nozzle 34 and the transport roll 36 can be inspected or removed from the opening 14 or the opening 18 .

(3) Structure of Door 20 Next, the structure of the door 20 will be described with reference to FIGS. 2, 4, and 5. FIG.

A hinge portion 40 and a hinge portion 42 are provided on the upper and lower sides of the rear side portion of the substantially square door 20 and are connected to the rear edge portion of the opening portion 18 . As a result, the door 20 opens and closes laterally with respect to the opening 18 around the hinges 40 and 42 . Since the door 20 is opened and closed to the right in FIG. 2, that is, to the lower side, a force is always applied to the door 20 in the opening direction by gravity.

An air cylinder 44 is provided on the left side wall 12 of the heat treatment chamber 10 above the door 20 along the front-rear direction. A base portion of a cylinder body 46 of the air cylinder 44 is fixed to the left side wall 12 using a wall connection fitting 48 . The wall connection fitting 48 is provided with a rotating portion, and as shown in FIG. 4, the tip portion of the cylinder body 46 is provided so as to be freely rotatable in the horizontal direction.

The tip of the rod 50 extending from the cylinder body 46 is rotatably fixed to the surface of the door 20 via a door connecting fitting 52 provided near the hinge portion 40 on the upper surface of the door 20. . When the door 20 is laterally opened, the door connection fitting 52 moves in the direction in which the rod 50 is extended.

Stoppers 54 and 54 for the door 20 are provided near the hinge portions 40 and 42 on the left side wall 12 of the heat treatment chamber 10 . As shown in FIG. 4, this stopper 54 is fixed to prevent further opening of the door 20 when it is opened 90 degrees.

The door 20 is provided with a key (not shown), and the key is removed to open the door 20. - 特許庁

Next, an air system diagram of the air cylinder 44 will be described with reference to FIG. A piston 56 is provided inside the cylinder body 46 of the air cylinder 44 , and the rod 50 protrudes from the piston 56 . The inside of the cylinder body 46 is divided into two closed spaces by the piston 56. The closed space on the side where the rod 50 exists is called "first closed space 58", and the closed space on the opposite side where the rod 50 does not exist is called " It will be called a second closed space 60”.

One pipe (intake side) from the speed controller 62 is connected to the first closed space 58 . The other pipe (exhaust side) of the speed controller 62 is open to the atmosphere. A pipe from a silencer 68 is connected to the second closed space 60 of the cylinder body 46 for exhaust.

In FIG. 5, when the door 20 rotates in the opening direction, the piston 56 moves toward the first closed space 58 side. Since the heat treatment chamber 10-3 is inclined at an inclination angle of θ3°, the force of gravity is also applied, and the door 20 is suddenly opened by its own weight. At this time, the air exhausted from the first closed space 58 along with the movement of the piston 56 passes through the speed controller 62 and is exhausted to the atmosphere. The amount of exhaust per unit time exhausted from the first closed space 58 is adjusted by a speed controller 62. If the amount of exhaust per unit time is large, the piston 56 moves suddenly due to the action of gravity, and the door 20 opens quickly. It will happen. Therefore, even if gravity acts, the door 20 does not open by its own weight, and the worker can pull the door 20 by himself with a predetermined pulling force so as not to cause danger to the worker. The exhaust volume per unit time is adjusted. The “predetermined pulling force” means the same pulling force as when the worker pulls open the door 20 when the heat treatment chamber 10-3 is placed horizontally (tilt angle θ°=0°). It should be noted that the greater the tilt angle θ3°, the greater the action of gravity, and it is necessary to reduce the displacement of the speed controller 62 per unit time. and make adjustments.

When the door 20 rotates in the closing direction, the worker closes the door against the force of gravity, so the door can be closed with an appropriate force. As the operator closes the door 20 , the piston 56 moves toward the second closed space 60 and the air in the second closed space 60 is exhausted through the silencer 68 .

The door 16 is also provided with a hinge portion 40 and a hinge portion 42 on the rear side portion of the door 16 so that the door 16 opens laterally to the side of the heat treatment chamber 10 where the height is low. An air cylinder 44 is attached to the left side wall 12 of the heat treatment chamber 10 below the door 16 in the same manner as the door 20 . A speed controller 62 and a silencer 68 are connected to the air cylinder 44 . The exhaust volume per unit time of the speed controller 62 is set to the same exhaust volume as the exhaust volume per unit time of the speed controller 62 of the door 20 . As a result, the door 16 does not open by its own weight, and opens like the door 20 with a predetermined pulling force.

Doors 16 and 20 of other heat treatment chambers 10-1, 10-2, 10-4 to 10-10 have similar structures. The larger the inclination angle θ° of the ten heat treatment chambers 10, the smaller the displacement of the speed controller 62 per unit time. It does not open by its own weight, and can be opened by a predetermined pulling force of the operator.

(4) Open/Closed State of Door 20 Next, a case where an operator manually opens and closes the door 20 of the heat treatment chamber 10-3 will be described.

When opening the door 20 of the heat treatment chamber 10-3, the worker unlocks a key (not shown) and opens the door 20 sideways. At this time, since the amount of air exhausted from the first closed space 58 of the air cylinder 44 per unit time is not small corresponding to the inclination angle θ3°, the movement of the piston 56 and the rod 50 becomes slow, and the door 20 loses its own weight. It can be opened up to the position of the stopper 54 by a predetermined pulling force of an operator without opening by force.

When the worker finishes predetermined work such as replacement of parts and cleaning inside the heat treatment chamber 10-3 and closes the door 20, the door 20 is closed against gravity, so that the door 20 can be closed slowly. At this time, the rod 50 is housed in the cylinder body 46 and the air in the second closed space 60 is exhausted to the outside through the silencer 68 . When the worker completely closes the door 20, he locks it with a key (not shown).

(5) Effect According to the present embodiment, even if the heat treatment chamber 10 is tilted on the arch-shaped installation table 3, the doors 16 and 20 are suddenly opened by their own weight when the doors 16 and 20 are opened. It opens slowly with a predetermined pulling force of the operator. Therefore, workers can work safely.

In particular, the 10 heat treatment chambers 10 are not installed on a linear inclined surface, but are installed on the arch-shaped installation table 3, so that the inclination angles θ° of the respective heat treatment chambers 10 are different. However, in the 10 heat treatment chambers 10, the exhaust rate per unit time of the speed controller 62 is adjusted according to each inclination angle θ°. Even if the door 20 is opened, the doors 16, 20 do not open due to their own weight and are opened with a predetermined pulling force.

Moreover, even when the doors 16 and 20 are closed, they are closed against gravity, so they are not closed suddenly.

(6) Modification In the above-described embodiment, a plurality of nozzles 34 are provided above the transport path for the web W, and a plurality of transport rolls 36 are provided below the transport path inside the heat treatment chamber 10 . First, a plurality of upper nozzles are provided at predetermined intervals along the conveying path above the conveying path of the heat treatment chamber 10, and lower nozzles are arranged at predetermined intervals below the conveying path in a staggered manner with the upper nozzles. Provide multiple Then, the web W may be dried by running in a floating state between the upper nozzle and the lower nozzle.

Also, in the above embodiment, the exhaust side of the speed controller 62 is open to atmospheric pressure, but instead of this, a regulator may be connected.

Further, in the above-described embodiment, the speed controller 62 is provided to adjust the displacement per unit time of the first closed space 58 of the air cylinder 44, but other displacement adjustment devices may be provided.

In the above-described embodiment, a plurality of heat treatment chambers 10 are provided on the arch-shaped installation table 3. However, the present invention is not limited to this. Alternatively, a plurality of heat treatment apparatuses 1 may be provided.

While one embodiment of the invention has been described above, this embodiment is provided by way of 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, replacements, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1... Heat treatment apparatus, 2... Base, 3... Installation stand, 10... Heat treatment chamber, 12... Left side wall, 18... Opening, 20... Door, 32... duct, 34 nozzle, 36 transport roll, 40 hinge portion, 42 hinge portion, 44 air cylinder, 46 cylinder body, 50 rod , 56... Piston, 58... First closed space, 60... Second closed space, 62... Speed controller

Claims (7)

a thermally insulating heat treatment chamber;
a nozzle for blowing hot air onto the web running in the front-rear direction inside the heat treatment chamber;
a door provided on the side wall of the heat treatment chamber;
has
The heat treatment chamber is provided so that the front-rear direction is inclined at an inclination angle θ° (0° < θ° 45°) with respect to the horizontal plane,
The door can be opened and closed horizontally from a higher side to a lower side of the inclined heat treatment chamber,
A base of a cylinder body of an air cylinder is connected to the side wall above or below the door,
The door is connected to a tip end of a rod extending from the cylinder body, and the rod extends from the cylinder body as the door opens,
connecting a displacement adjustment device to the closed space on the rod side in the cylinder body;
The larger the inclination angle θ°, the smaller the displacement per unit time from the closed space by the displacement adjustment device.
A web heat treatment apparatus characterized by: The displacement adjustment device is a speed controller,
One end of the speed controller is connected to the closed space on the rod side in the air cylinder,
A heat treatment apparatus for a web according to claim 1. the other end of the speed controller is open to atmospheric pressure;
A heat treatment apparatus for a web according to claim 2. A plurality of connected heat treatment chambers are installed on an arch-shaped setting table,
A heat treatment apparatus for a web according to claim 1. A plurality of nozzles are provided at predetermined intervals above the transport path of the web in the front-rear direction inside the heat treatment chamber,
Conveying rolls for conveying the web are provided at predetermined intervals below the conveying path,
A heat treatment apparatus for a web according to claim 1. A plurality of upper nozzles are provided at predetermined intervals above the transport path of the web in the front-rear direction inside the heat treatment chamber,
A plurality of lower nozzles are provided below the transport path at predetermined intervals and in a zigzag pattern with the upper nozzles.
A heat treatment apparatus for a web according to claim 1. The exhaust volume per unit time of the exhaust volume adjustment device is the same pulling force as the pulling force when the door is not opened by its own weight and the heat treatment chamber is placed horizontally and the door is pulled open. is adjusted so that the door can be opened at
A heat treatment apparatus for a web according to claim 1.

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