JP2003082573A - Web heat treatment equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat treatment equipment that can give the web W the variegation effect not only in the longitudinal direction but also in the lateral direction. SOLUTION: The web heat treatment equipment comprises a pair of the upper and lower conveying nets 22 and 24 running in the heat treatment chamber 12 in the longitudinal direction and the upper nozzles 18 and the lower nozzles 20 re set above the net and below the net. The blowing orifices 47 of the plurality of upper nozzles 18 are inclined to the transverse direction of the web W, while the blowing orifices 46 of the plurality of lower nozzles 20 are inclined to the transverse direction and additionally inclined toward the blowing orifice 46 of the upper nozzles 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web heat treatment apparatus for heat-treating or drying a long web such as a fabric such as a fiber woven fabric or a knitted fabric, a non-woven fabric, or a film.

[0002]

2. Description of the Related Art Conventionally, as a heat treatment apparatus for drying or heat-treating a web, the web is interposed between a pair of upper and lower transport nets, and the web is moved along with the transport nets while being placed on both upper and lower surfaces of the web. A device has been proposed in which hot air is blown from a nozzle over the entire width (Japanese Patent No. 2764197).

That is, in this heat treatment apparatus, hot air from nozzles provided above and below a pair of upper and lower carrying nets hits the upper and lower surfaces of the web to give a fir effect to the web in the overfeed state. It is a thing.

[0004]

However, in the heat treatment apparatus having the above structure, a fir effect can be given to a web in an overfeed state by hot air from a nozzle in the length direction of the web. There was a problem that the fir effect could not be applied in the width direction of.

In view of the above problems, the present invention provides a heat treatment apparatus for a web, which can give a fir effect not only in the length direction of the web but also in the width direction of the web.

[0006]

According to a first aspect of the present invention, a pair of upper and lower transfer nets that travel in the front-rear direction inside a heat treatment chamber and a pair of the upper and lower transfer nets are in an overfeed state in the front-rear direction. A plurality of upper nozzles for injecting hot air from above onto the traveling web are provided above the pair of upper and lower conveying nets, and a plurality of lower nozzles for injecting hot air from below to the web are provided in the upper and lower pair. In a heat treatment apparatus for a web provided below a carrying net, hot air outlets of the plurality of upper nozzles are provided at least partially inclined with respect to the width direction of the web, and the hot air of the plurality of lower nozzles is provided. The blowout port is provided so that at least a part thereof is inclined with respect to the width direction of the web, and at least a part thereof is also provided so as to be inclined with respect to the hot air blowing port of the upper nozzle. DOO is a web of heat treatment apparatus according to claim.

According to a second aspect of the present invention, the outlets of the pair of upper and lower nozzles are linear slits, the outlets of the plurality of upper nozzles are provided in parallel with each other, and the outlets of the plurality of lower nozzles are provided. The heat treatment apparatus for a web according to claim 1, wherein the heat treatment apparatuses are provided so as to be parallel to each other and to intersect with an outlet of the upper nozzle.

According to the web heat treatment apparatus of claim 1,
Since the hot air outlets of the upper nozzles and the lower nozzles are provided so as to be inclined with respect to the width direction of the web, the hot air gives a fir effect not only in the length direction of the web but also in the width direction of the web. .

Further, since the hot air blowing ports of the plurality of lower nozzles are also inclined with respect to the hot air blowing ports of the upper nozzle, the web does not meander.

According to the web heat treatment apparatus of claim 2,
The outlets of a plurality of upper nozzles are provided in parallel with each other,
The outlets of the plurality of lower nozzles are parallel to each other and are provided so as to intersect with the outlets of the upper nozzle, so that a fir effect is provided in the length direction and the width direction of the web.

Further, since the upper and lower nozzles are provided so as to intersect with each other, the conveyed web does not meander.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A heat treatment apparatus for a long web W such as a fabric such as a fiber woven fabric or a knitted fabric, a non-woven fabric and a film according to the first embodiment will be described below with reference to the drawings. explain.

(1) Overall Structure of Heat Treatment Apparatus 10 FIG. 1 is a vertical cross-sectional view of the heat treatment apparatus 10 as seen from the lateral direction, and FIG. 2 is a vertical cross-sectional view as seen from the rear.

As shown in FIGS. 1 and 2, a carry-in port 14 is provided on the front surface of the heat insulating structure, and a carry-out port 16 is provided on the rear surface. The web W is carried into the heat treatment chamber 12 through the carry-in port 14 and carried out through the carry-out port 16 when the heat treatment is completed.

Inside the heat treatment chamber 12, a plurality of upper nozzles 18 are arranged above the conveyance path of the web W, and a plurality of lower nozzles 20 are arranged below the conveyance path. In addition, a pair of upper and lower spreading nozzles 50, 5 are provided near the carry-out port 16.
Two are provided. The structures of the upper and lower nozzles 18, 20 and the spreading nozzles 50, 52 will be described later in detail.

Below the upper nozzle 18, an endless upper carrying net 22 for carrying the web W runs in the front-rear direction, and above the lower nozzle 20, an endless lower carrying net 24 is also provided in the front-rear direction. Are traveling to. Then, the web W in the overfeed state runs in the front-rear direction between the upper carrying net 22 and the lower carrying net 24.

(2) Internal structure of heat treatment chamber 12 Next, the internal structure of the heat treatment chamber 12 will be described.

The upper nozzle 18 and the lower nozzle 20 are divided into a first block and a second block in the heat treatment chamber 12 in order from the carry-in port 14 side.

First, the structure of the upper nozzle 18 and the lower nozzle 20 of the first block will be described. As shown in FIG. 1, the upper nozzle 18 and the lower nozzle 20 of the first block are the inlet 1
It is provided on the 4 side.

As shown in FIG. 2, along the right side surface of the heat treatment chamber 12 and above the blower port of the blower fan 38,
A dividing duct 26 that divides the hot air in the vertical direction is arranged. An upper duct 28 is connected from the upper part of the divided duct 26 in the left-right direction of the heat treatment chamber 12, and a lower duct 30 is connected from the lower part of the divided duct 26 in the left-right direction. The ceiling surface of the upper duct 28 is inclined so that the volume of the upper duct 28 decreases as the distance from the divided duct 26 increases.
Six upper nozzles 18 are provided in the lower part of the. Also,
The lower duct 30 is provided with an inclined bottom surface so that the volume thereof becomes smaller as the distance from the divided duct 26 increases, and six lower nozzles 20 are provided on the upper surface of the lower duct 30.

A recovery duct 32 is provided on the left side surface of the heat treatment chamber 12 on the side opposite to the division duct 26.
A filter 34 is provided below the recovery duct 32, and a heating unit 36 including a burner is provided below the filter 34.

A circulation duct 40 is provided from the heating portion 36 toward the air inlet of the blower fan 38.

The above structure will be described based on the flow of air. The hot air blown by the blower fan 38 is divided into upper and lower parts by the split duct 26, and the hot air above the upper duct 28.
The hot air blown downward through the upper nozzle 18 and the hot air flowing through the lower duct 30 from the lower portion of the divided duct 26 is blown upward through the lower nozzle 20.

Upper carrying net 22 and lower carrying net 24
The hot air obtained by heat-treating the web W between and is collected in the collection duct 32 on the left side, passes through the filter 34, and the heating unit 3
Up to 6. Here, it is heated again, and circulates to the blower fan 38 through the circulation duct 40.

The second block has the same structure as the first block, and the web W passes through the second block having the same structure subsequent to the first block.

Furthermore, after the second block, a pair of upper and lower spreading nozzles 50 and 52 for spreading the web W into a spread state.
Is provided. The structure for supplying hot air to the pair of upper and lower spreading nozzles 50 and 52 has the same configuration as the first block.

(3) Structure of Upper Nozzle 18 and Lower Nozzle 20 Next, the structure of the upper nozzle 18 and the lower nozzle 20 is shown in FIG.
And it demonstrates based on FIG.

FIG. 3 is a perspective view showing an arrangement state of the lower nozzles 20 of the first block, and FIG. 4 is a plan view of the first block, the second block and the spreading nozzles 50 and 52.
FIG. 8 is a vertical cross-sectional view of the upper and lower nozzles 18, 20.

As shown in FIG. 8, in the upper nozzle 18, the lower portion of the base portion 43 attached to the lower surface of the upper duct 28 is tapered, and the blowing portion 45 is formed from the tapered portion. A straight slit-shaped outlet 47 is provided on the lower surface of the outlet 45. In addition, a pair of flange portions 49 for allowing the hot air to flow downward are projected along the outlet 47.

The six lower nozzles 20 are connected to the lower duct 3
The upper portion of the base portion 42 attached to the upper surface of 0 is tapered, and the blowing portion 44 is formed from the tapered portion. A linear slit-shaped outlet 46 is provided on the upper surface of the outlet 44. Further, along the outlet 46, the flange portion 4 for flowing hot air upward
A pair of 8 projects.

The arrangement of the six upper nozzles 18 and the six lower nozzles 20 is the first feature of this embodiment.

That is, in the conventional example, both the upper and lower nozzles are arranged in parallel along the width direction of the web W (Japanese Patent No. 2764197). However, in the present embodiment, the first characteristic is that the lower nozzle 20 and the upper nozzle 18 are provided so as to be inclined with respect to the width direction of the web W.

As shown in FIG. 4, the blow-out port 46 of the lower nozzle 20 is θ1 (however, with respect to the carrying direction of the web W).
0 ° <θ1 <90 °) is arranged with an inclination angle of
Moreover, the six lower nozzles 20 are arranged in parallel with each other.

On the other hand, as shown in FIG. 4, the upper nozzle 18 is provided so as to be inclined with respect to the width direction of the web W and is arranged so as to intersect the lower nozzle 20 as well. Specifically, as shown in FIG. 4, the webs W are arranged at θ2 (where 0 ° <θ2 <90 °) in the width direction, and the six upper nozzles 18 are parallel to each other. is there.

Further, as shown in FIGS. 1 and 4, an upper duct 28 and a lower duct 30 are provided so as to be displaced by a dimension A along the carrying direction.

The arrangement of the upper nozzles 18 and the lower nozzles 20 in the second block is the same as that of the first block, except that the upper and lower nozzles 18 and 20 are arranged opposite to the arrangement direction of the web W. Has become. That is, the lower nozzles 20 have an angle of −θ1 with respect to the width direction of the web W, and the upper nozzles 18 are arranged with an angle of −θ2 with respect to the width direction of the web W.

(4) Structure of Spreading Nozzles 50, 52 The second feature of this embodiment is that a pair of upper and lower spreading nozzles 50, 52 for making the web W spread after the second block.
52 is provided.

The structure of the pair of upper and lower spreading nozzles 50, 52 is substantially the same as the structure of the upper nozzle 18 and the lower nozzle 20, but is characterized by the structure of the blowout port 53. That is, as shown in FIG. 4, the outlet 53 is bent in a V shape at the center line of the conveyance path of the web W, and the left outlet 46 has a structure that blows out hot air in the left direction and the right outlet. The mouth 46 has a structure that blows out hot air toward the right side.

(5) Operation State A case where the web W is heat-treated in the heat treatment apparatus 10 having the above-described structure will be described.

The web W is conveyed between the upper conveying net 22 and the lower conveying net 24 in an overfeed state. As described above, in order to convey the web W in the overfeed state, the web W is conveyed at a speed higher than the traveling speed of the upper conveying net 22 and the lower conveying net 24, and the web W is conveyed without tension. Let

When the web W is carried in from the carry-in port 14 of the heat treatment chamber 12 and reaches the first block, hot air is blown from the upper nozzle 18 and the lower nozzle 20. In this case, since the upper nozzle 18 and the lower nozzle 20 are provided so as to be inclined with respect to the width direction of the web W, the hot air is inclined with respect to the width direction of the web W and strikes from above and below, so that the length of the web W increases. The fir effect is applied not only in the width direction but also in the width direction. Also,
Since the upper nozzle 18 and the lower nozzle 20 are provided so as to intersect with each other, the web W does not meander in one direction and a fir effect can be provided. Then, as shown in FIGS. 1 and 4, the upper duct 28 and the lower duct 30 are provided so as to be displaced by the dimension A along the carrying direction, thereby further enhancing the fir effect.

After passing through the first block, the web W then passes through the second block.

In this case, since the upper nozzles 18 and the lower nozzles 20 are arranged at an inclination angle different from that of the first block, it is possible to give the web W a fir effect different from that of the first block, and Similarly to the first block, the fir effect can be provided not only in the length direction of the web W but also in the width direction of the web W.

The web W passing through the second block passes between the upper spreading nozzle 50 and the lower spreading nozzle 52. In this case, the hot air is blown rightward on the right side and leftward on the left side, so that the web W is in the spread state, and when the web W is unloaded from the carry-out port 16, it is in the spread state. Be transported.

As described above, the heat treatment apparatus 10 of this embodiment can give the web W a fir effect not only in the length direction of the web W but also in the width direction of the web W.

Further, the web W can be carried out in the spread state by passing through the pair of upper and lower spreading nozzles 50 and 52.

(Second Embodiment) A second embodiment of the present invention will be described with reference to FIG.

The difference between this embodiment and the first embodiment is the shape of the outlets 46, 47 of the upper and lower nozzles 18, 20.

In the first embodiment, the outlets 46 and 47 were straight lines, but in the present embodiment, they are in a curved state (for example, in an arc state) as shown in FIG. Ports 46, 47 are provided to be inclined with respect to the width direction of the web W, and the upper nozzle 18 and the lower nozzle 20 are provided.
And are arranged to intersect.

Also in this embodiment, the fir effect can be given not only in the length direction of the web W but also in the width direction of the web W.

In FIG. 5, the outlet 46 of the lower nozzle 20 is indicated by a single straight line, and the outlet 47 of the upper nozzle 18 is indicated by a dotted line in order to make the explanation easy to understand. 24 and the web W are indicated by a chain double-dashed line. This description method is the same in FIG. 6 of the third embodiment and FIG. 7 of the fourth embodiment.

(Third Embodiment) A third embodiment of the present invention will be described with reference to FIG.

The difference between this embodiment and the first embodiment is the shape of the blow-out ports 46 and 47 of the upper nozzle 18 and the lower nozzle 20.

As shown in FIG. 6, the outlets 46 of the lower nozzle 20 are arranged in a V shape and are symmetrically arranged with respect to the center line of the web W in the width direction. In addition, the outlet 47 of the upper nozzle 18 is also in the shape of a dogleg, and the web W
Are symmetrical with respect to the width direction of the lower nozzle 20 and intersect with the outlet 46 of the lower nozzle 20.

Even in this embodiment, the fir effect can be provided not only in the length direction of the web W but also in the width direction of the web W.

(Fourth Embodiment) A fourth embodiment of the present invention will be described with reference to FIG.

The difference between this embodiment and the third embodiment is that the air outlet 46 is provided in the shape of a dogleg in the third embodiment, but in this embodiment, as shown in FIG. Only the central portion of W in the width direction is provided along the width direction of the web W.

Even in this embodiment, since the left and right portions of the web W are inclined with respect to the width direction of the web W, a fir effect can be provided in the width direction of the web W.

(Fifth Embodiment) In the above embodiment, a pair of spreading nozzles 50 and 52 are provided above and below the conveyance path of the web W. However, the present invention is not limited to this, and spreading nozzles may be provided only above and below. Good.

(Modification 1) Modifications of the present invention are shown in FIGS.
It will be described based on.

In the above embodiment, the structures of the upper nozzle 18 and the lower nozzle 20 are those shown in FIG. 8, but instead of this, as shown in FIG.
Two 4 may be provided in parallel, or a plurality of punch holes 56 may be provided as shown in FIG.

(Modification 2) As shown in Japanese Patent No. 2860441, the upper and lower nozzles 18 and 20 have a structure in which a rotary damper is provided inside the nozzle, and the rotary damper is rotated to rotate the upper and lower nozzles 18 and 20. The structure may be such that the hot air is blown from 20 intermittently to give a more fir effect.

(Modification 3) In the above embodiment, a pair of upper and lower spreading nozzles 50 and 52 are provided for spreading the web W. However, if the spreading state of the web W is sufficient, the spreading nozzles 50 and 52 are It may be omitted.

(Modification 4) In the above-described embodiment, FIG. 1 and FIG.
As shown in, the upper duct 28 and the lower duct 30 are provided so as to be displaced by the dimension A along the carrying direction, but instead of this,
The upper duct 28 and the lower duct 30 may be provided at vertically symmetrical positions (that is, A = 0) so that the web W is constantly blown with hot air from above and below.

[0065]

As described above, according to the present invention, the fir effect can be provided not only in the length direction of the web W but also in the width direction of the web W.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a heat treatment apparatus as seen from the right side according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the heat treatment apparatus as seen from behind.

FIG. 3 is a perspective view of a lower nozzle of the first block.

FIG. 4 is a plan view of a first block, a second block and a spreading nozzle.

FIG. 5 is a plan view of upper and lower nozzles of a second embodiment.

FIG. 6 is a plan view of upper and lower nozzles of a third embodiment.

FIG. 7 is a plan view of upper and lower nozzles of a fourth embodiment.

FIG. 8 is a vertical cross-sectional view of the upper and lower nozzles of the first embodiment.

FIG. 9 is a perspective view of a nozzle according to a first modification.

FIG. 10 is a perspective view of a nozzle of Modification 1;

[Explanation of symbols]

10 Heat treatment equipment 12 Heat treatment room 14 carry-in entrance 16 exit 18 upper nozzle 20 Lower nozzle 22 Net for upper transportation 24 Lower transport net 26 split ducts 28 Upper duct 30 Lower duct 42,43 base 44, 45 blowing section 46, 47 outlet 48, 49 Flange 50 Top spreading nozzle 52 Bottom spreading nozzle

Continued front page    (72) Inventor Takafumi Yoshikawa             At 101 Kawai, Kawai-machi, Kitakatsuragi-gun, Nara             1 Inside Hirano Techseed Co., Ltd. (72) Inventor Akihiko Kimura             At 101 Kawai, Kawai-machi, Kitakatsuragi-gun, Nara             1 Inside Hirano Techseed Co., Ltd. F term (reference) 3B154 AB19 AB20 AB21 AB22 AB23                       AB24 AB27 BA60 BB12 BB33                       BB43 BB47 BC01 BC08 BC09                       BC16 BC47                 3L113 AA02 AA03 AB02 AC01 AC36                       AC67 BA31 DA30

Claims (2)

[Claims] 1. A pair of upper and lower carrier nets that travel in the front-rear direction inside a heat treatment chamber, and a plurality of jets of hot air from above to a web that travels in the front-rear direction in an overfeed state between the pair of upper and lower carrier nets. An apparatus for heat treatment of a web having an upper nozzle above the pair of upper and lower transfer nets, and a plurality of lower nozzles for injecting hot air from below to the web below the pair of upper and lower transfer nets. In the hot air blowout port of the plurality of upper nozzles, at least a portion is provided to the width direction of the web, the hot air blowout port of the plurality of lower nozzles, with respect to the width direction of the web. At least a part of the heat treatment device for a web is provided so as to be inclined, and at least a part thereof is also provided so as to be inclined with respect to a hot air outlet of the upper nozzle. Place 2. The pair of upper and lower nozzles have outlets which are linear slits, the plurality of upper nozzles have outlets that are parallel to each other, and the plurality of lower nozzles have outlets that are parallel to each other.
The heat treatment apparatus for a web according to claim 1, wherein the heat treatment apparatus is provided so as to intersect with an outlet of the upper nozzle.