JP3252319B2 - Web heat treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment apparatus for drying a web such as a woven fabric, a knitted fabric, and other long webs.

[0002]

2. Description of the Related Art A heat treatment apparatus 10 for drying the above-mentioned web.
As shown in FIG. 8, a tensionless heat treatment apparatus is used in which a web W is disposed between a pair of upper and lower transport nets 102 and 104 that travel and is transported and dried by applying hot air thereto. 62-110294
issue).

When the web W is arranged on the pair of upper and lower transport nets 102 and 104, the traveling speed of the web W is set higher than the traveling speed of the transport nets 102 and 104 so that tension is not applied to the web W. , In a so-called overfeed state.

[0004]

Incidentally, in the case of drying a cotton knit, which is one of the webs W, there are cases where several of them are dried at the same time. In this case, there is no problem when the same type of cotton knit is dried, but the heat treatment apparatus 100 cannot simultaneously dry several cotton knits having different overfeed amounts.

That is, in the heat treatment apparatus 100 shown in FIG. 8, the setting of the amount of overfeed is the same, and when cotton knits having different settings are dried, the setting of the amount of overfeed is changed for each type. It was necessary and the work was complicated.

In view of the above problems, the present invention provides a heat treatment apparatus capable of simultaneously performing a heat treatment such as drying of a web requiring setting of different overfeed states.

[0007]

According to a first aspect of the present invention, there is provided a heat treatment apparatus comprising: a pair of upper and lower transport nets traveling in a longitudinal direction within a heat treatment chamber; in the web of the heat treatment apparatus having a nozzle for injecting hot air into the running web in the longitudinal direction, is more parallel to the same axis of rotation on the roll to travel at overfeed amount of the web in the lateral direction, the plurality parallel of
The rolls were rotating respectively at different rotational speeds
Provided roll rotation means can, was the more parallel b
Web with different overfeed rates for each
Is transported .

[0008] In a second aspect of the present invention, in the web heat treatment apparatus of the first aspect, the pair of upper and lower transport nets are arranged in parallel in the left-right direction, and the plurality of upper and lower transport nets are moved at different traveling speeds. It is provided with net traveling means for traveling.

In the web heat treatment apparatus of the present invention, a plurality of rolls arranged in parallel in the left-right direction carry a web requiring a different overfeed amount to be transferred between a pair of upper and lower transfer nets. Each can provide a different amount of overfeed.

[0010] In the web heat treatment apparatus according to claim 2,
Since not only the overfeed amount but also the traveling speed of the pair of upper and lower transport nets can be changed,
Further, heat treatment such as drying of the web suitable for each property can be performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A heat treatment apparatus 10 according to a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of a main part of the heat treatment apparatus 10, FIG. 2 is a longitudinal sectional view of the heat treatment apparatus 10, and FIG.
FIG. 3 is a sectional view taken along line AA in FIG. 2.

As shown in FIG. 2, the heat treatment apparatus 10 includes a heat treatment chamber 12 for performing heat treatment, a carry-in chamber 14 provided in front of the heat treatment chamber 12, and a carry-out chamber provided in the rear. It consists of 16. Inside the heat treatment chamber 12, a pair of upper and lower nozzles 18 and 20 are provided in the front-rear direction. The pair of upper and lower nozzles 18 and 20 are arranged so that the upper and lower sides are staggered. The loading room 14
In addition, the carrying-out room 16 may be a frame having a frame instead of a room configuration.

Above and below the upper nozzle 18, endless upper transfer nets 22 are provided. Upper drive rolls 24 and 26 for running the upper transport net 22 are provided in the carry-in chamber 14 and the carry-out chamber 16, respectively.

Above and below the lower nozzle 24, an endless lower transport net 28 is disposed. In the carry-in room 14 and the carry-out room 16, lower drive rolls 30 and 32 for running the lower transport net 28 are provided.

A carry-in port 34 for carrying a web such as cloth is provided on the ceiling surface of the carry-in chamber 14, and a pair of upper and lower transport nets 22, 2 are provided inside the carry-in chamber 14 from the carry-in port 34.
8 is provided with a guide plate 36 for guiding the web. In addition, carry-in rolls 37 and 38 for guiding the web to the carry-in port 34 are provided above the outside of the carry-in port 34.

A carry-out port 42 for carrying out the web is provided on the ceiling surface of the carry-out port 16.
A guide plate 44 for guiding the web to the carry-out port 42 and a carry-out roll 46 are provided. An unloading roll 48 for unloading the web is provided above and outside the unloading port 42.

Next, a structure for blowing hot air will be described with reference to FIG.

As shown in FIG. 3, a pair of upper and lower nozzles 1
8, 20 are connected by a duct 50 at the right end. A centrifugal fan 52 is provided above the duct 50. Then, air is sent to the duct 50 from an air outlet provided on the lower surface of the fan 52.

A pair of upper and lower nozzles 1 passes through a duct 50.
The hot air blown out from the nozzles 8 and 20 is blown toward the web from a blowout port 54 provided below the upper nozzle 18 and a blowout port 56 provided on the upper surface of the lower nozzle 20.
Hot air (hereinafter referred to as “return air”) bounced off the web flows to the ceiling of the heat treatment chamber 12, passes through the air filter 58, and reaches the heater 60. Heated again by the heater 60, flows along the ceiling surface, and flows to the air inlet provided on the side surface of the fan 52. As described above, the fan 52 circulates hot air inside the heat treatment chamber 12.

Next, the structure of the carry-in rolls 38, 37 and the carry-out rolls 46, 48 will be described with reference to FIGS.

As shown in FIG. 4, the driven carry-in roll 38 includes two left divided rolls 62 and right divided rolls 64 arranged in parallel in the left-right direction. Left and right split rolls 62, 64
Are provided concentrically with the rotating shaft 66, while the right split roll 64 is fixedly provided on the rotating shaft 66, while the left split roll 62 is mounted via bearings 68 and 70. I have. A right chain wheel 72 is provided at the right end of the rotating shaft 66, and the left split roll 62
Is provided with a left chain wheel 74 at the left end. The right chain wheel 72 is provided with a right motor 76 for a right split roll via a chain, and the left chain wheel 74 is provided with a left motor 78 for a left split roll 62 via a chain. Thereby, when the right motor 76 is driven, only the right division roll 64 rotates,
When the left motor 78 is driven, only the left split roll 62 rotates.

Although the structure of the carry-in roll 38 has been described above, the drive-out roll 48 to be driven also has the same structure.
It is composed of a left split roll 80 and a right split roll 82,
Each can be independently rotated by the left motor 84 and the right motor 86.

As shown in FIG. 5, the passive roll 37 is composed of two left divided rolls 37a and right divided rolls 37b arranged in the left-right direction. Left and right split rolls 37a,
37b is provided concentrically with the rotation shaft 41, and the left and right split rolls 37a and 37b rotate independently.

The unmoving unloading roll 46 also includes the unloading roll 37.
It has the same structure as.

Next, based on FIG.
The structure of the lower and upper driving rolls 30, 26 and the pair of upper and lower transport nets 22, 28 will be described.

Upper drive roll 24 and lower drive roll 30
Also, it is provided with a structure similar to the carry-in roll 38 and divided in the left-right direction, and can be independently rotated by a pair of left and right motors (not shown). Further, the upper drive roll 26 and the lower drive roll 32 are also provided in the same structure as the carry-in roll 37 and are divided in the left-right direction, and can be independently rotated by passive movement. The upper and lower transport nets 22, 28 are also provided separately in the left-right direction.
The left web W1 is connected to the upper left transport net 22a.
The web W2 on the right side is transported between the upper right transport net 22b and the lower right transport net 28b.

A case where two webs W1 and W2 are simultaneously dried using the heat treatment apparatus 10 having the above-described configuration will be described.

The web W1 on the left side passes through the left split roll 62 of the loading roll 38, passes between the upper left transport net 22a and the lower left transport net 28a, and is transported from the left split roll 80 of the unloading roll 48. You. In this case, the overfeed amount is determined by the difference in speed between the left divided roll 62 and the upper and lower left transport nets 22a and 28a. Specifically, the speed of the left division roll 62 is adjusted to the left transfer net 22a,
The speed of the left split roll 80 is set to be equal to or lower than the speed of the left split roll 62. The transport speed is also determined by the traveling speed of the upper left transport net 22a and the lower left transport net 28a.

The right web W2 passes through the right split roll 64 of the loading roll 48, passes between the upper right transport net 22b and the lower right transport net 28b, and is unloaded from the right split roll 82 of the unloading roll 48. . In this case, the web W2
Is determined by the difference between the speeds of the right split roll 64 and the upper and lower transport nets 22b, 28b, and the transport speed is also determined by the upper right transport net 22b and the lower right transport net 28.
It is determined by the traveling speed of b.

In the heat treatment apparatus 10 described above, even though the amount of hot air injected from the pair of upper and lower nozzles 18 and 20 is the same, the overfeed amount and the transport speed are different between the web W1 and the web W2. At the same time, webs having different drying conditions can be dried. For example,
In the case of drying a fast-drying web and a slow-drying web, the transport speed is increased for fast-drying webs and slowed for slow-drying webs. On the other hand, for webs that require a large amount of overfeed,
The overfeed amount can be increased by the amount of the web.

In the above heat treatment apparatus, the same web can be dried. In this case, if the rotation speed of all rolls is the same, heat treatment becomes possible.

Second Embodiment FIG. 6 is a perspective view of a heat treatment apparatus 10 according to a second embodiment.
The difference from the first embodiment is that the upper and lower transport nets 88, 9
0 is not divided in the left-right direction as in the first embodiment.

In this case, the web transport speed cannot be changed in the left-right direction, but the overfeed amount can be adjusted in the left-right direction.

Third Embodiment FIG. 7 is a longitudinal sectional view of a heat treatment apparatus 10 according to a third embodiment. The difference from the heat treatment apparatus 10 according to the first embodiment is that the vertical transfer nets 94, 96, 98 are provided in three upper and lower tiers, so that the web is carried in from the ceiling surface of the carry-in room 14 and carried out from the bottom surface. The carry-out chamber 16 in the first embodiment is a turn-back chamber 92 for turning the web.

Modification In each of the above embodiments, the upper and lower transport nets, the carry-in roll, and the carry-out roll were divided into two in the left-right direction. However, the present invention is not limited to this. Can be heat-treated in the same heat-treatment chamber.

[0037]

According to the web heat treatment apparatus of the present invention, a plurality of rolls for running the web in the overfeed state are arranged in parallel in the left-right direction, so that the plurality of webs can run simultaneously in different overfeed states. it can.

According to the web heat treatment apparatus of claim 2,
By providing a pair of upper and lower transporting nets in a plurality of rows in the left-right direction, a plurality of webs can be transported at different transporting speeds.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a heat treatment apparatus showing a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a heat treatment apparatus.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a vertical cross-sectional view of a loading roll to be driven.

FIG. 5 is a vertical cross-sectional view of a passive carry-in roll.

FIG. 6 is a perspective view of a main part of a heat treatment apparatus according to a second embodiment.

FIG. 7 is a longitudinal sectional view of a heat treatment apparatus according to a third embodiment.

FIG. 8 is a perspective view of a conventional heat treatment apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heat treatment apparatus 12 Heat treatment chamber 18 Upper nozzle 20 Lower nozzle 22a Upper left transfer net 22b Upper right transfer net 28a Lower left transfer net 28b Lower right transfer net 38 Loading roll 48 Unloading roll 62 Left split roll 64 Right split roll 80 Left split roll 82 Right split roll

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-31828 (JP, A) JP-A-5-78031 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06B 15/09 D06B 23/04 101 D06C 7/00

Claims (2)

(57) [Claims] 1. A pair of upper and lower transport nets that travel in the heat treatment chamber in the front-rear direction, and a nozzle that injects hot air to a web that travels in the front-rear direction in an overfeed state between the pair of upper and lower transport nets. In a web heat treatment apparatus, a plurality of rolls for running a web in an overfeed state are arranged side by side on the same rotation axis in the left-right direction, and roll rotation means capable of rotating the plurality of parallel rolls at different rotation speeds is provided. , Each of the plurality of parallel rolls has a different
-A web heat treatment apparatus characterized in that the web is transported by a feed amount . 2. A net traveling means for arranging a plurality of said pair of upper and lower transport nets in parallel in the left-right direction, and running said plurality of upper and lower transport nets at different traveling speeds. 2. The apparatus for heat treating a web according to claim 1.