JPS6347833Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a hot-air drying/heating machine with a so-called air tumbling function, which is used to finish knitted, woven, non-woven fabrics, etc., to make them tension-free and bulky. Regarding the improvement of

(Prior art) In general, knitted, woven, non-woven fabrics, etc. are subjected to so-called kneading at the raw fabric stage in order to prevent shrinkage during use or after washing when made into products such as underwear and clothing. It is common to process it to increase the shrinkage effect and make it bulky.

Therefore, as a device for finishing the above-mentioned knitting, woven fabric, etc., with bulkiness, a so-called tumble dryer, which can give a high shrinkage rate to the knitting/woven fabric and give excellent bulkiness, has been widely used. It's here. However, the tumble dryer has a problem in terms of work efficiency because its processing mechanism is a batch system, and it also has the major drawback that it is difficult to significantly improve productivity because the rate of water evaporation is slow. Ta.
Furthermore, the treated cloth tends to be twisted and wrinkled, and it takes a lot of effort to clean up afterwards.

On the other hand, in recent years, as shown in Japanese Utility Model Application Publication No. 57-179094, etc., a method has been developed that eliminates the above-mentioned drawbacks of the tumble dryer and enables a significant improvement in productivity through a continuous processing method. A hot air treatment device having an air tumbling function has been developed and is now being used to treat knitted, woven, non-woven fabrics, etc. in place of the conventional tumble dryer. That is, air nozzles are arranged in a staggered manner on the back surfaces of two guide nets that run with a certain gap between them, and hot air is blown from above and below the cloth that is guided by the guide nets within the gap between the guide nets. This method repeatedly bends the cloth while drying and heating it continuously.

In the continuous air tumbler dryer having the above-mentioned configuration, continuous processing is possible, so that it can exhibit particularly excellent practical utility in terms of productivity. However, due to the difference in the tumbling function, the conventional tumble dryer is slightly insufficient in terms of the higher shrinkage rate and bulkiness it imparts to the fabric, which are the characteristics of the conventional tumble dryer, and improvements have been made to this point. There are still issues that need to be addressed.

(Problems to be solved by the invention) The present invention aims to solve the above-mentioned problems in this type of continuous air tumbler dryer. To provide a hot-air drying/heating machine having an air tumbler function that can maintain bulkiness and greatly improve productivity.

(Means for Solving the Problems) The hot air drying/heating machine of the present invention has two mesh belts running at a constant speed with a certain gap disposed inside the processing machine body, and each back side of both mesh belts is On the side, a plurality of hot air blowing nozzles on one side and hot air blowing nozzles on the other side are arranged in a staggered manner so as to face each other, and the hot air blowing nozzles are arranged in a staggered relational position. It is characterized in that it reciprocates in the traveling direction of the mesh belt with a stroke of 1/2 pitch or more of the hot air blowing nozzle while maintaining the hot air blowing nozzle, thereby enhancing the tumbling effect on the cloth running between the two mesh belts.

(Function) The fabric to be treated is inserted into the gap between the mesh belts, and the fabric is run and guided by the belt surface of the mesh belt. On the other hand, both hot air blowing nozzles are reciprocating at a constant stroke and constant speed parallel to the traveling direction of the cloth while maintaining a staggered positional relationship, and a constant pressure is applied to both hot air blowing nozzles. Hot air is supplied. Therefore, the cloth is bent up and down by the hot air jetted from each nozzle, and is curved in the shape of ~.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic vertical cross-sectional side view of a hot air drying/heating machine according to the present invention, in which 1 is the machine body, 2a and 2b are the inlet and outlet of fabric A into the machine body 1, and 3a and 3b are mesh belts made of metal or heat-resistant synthetic fiber.

The two mesh belts 3a, 3b are connected to each conveyor roller 4a, 3b so that the opposing belt surfaces run in the same direction with a constant gap G.
4b..., and a driving device (not shown)
The vehicle is driven to run at an appropriate speed in the direction of arrow A.

5a and 5b are close to the back side of the two opposing mesh belts 3a and 3b, and
These are box-shaped hot air blowing nozzles that are arranged vertically in a staggered manner while facing each other, and each has a narrow opening having a length approximately equal to the width of the cloth to be treated.

The hot air blowing nozzle 5a on the one side, that is, the upper side
and the other side, that is, the lower hot air blowing nozzle 5b,
As shown in FIG. 1, they are regularly arranged with a certain pitch L, and both hot air blowing nozzles 5a,
5b is a hot air supply duct 8a, 8b via distribution ducts 6a, 6b and telescopic ducts 7a, 7b.
are connected to each other.

The hot air blowing nozzles 5a, 5b are configured to be able to reciprocate to advance the mesh belts 3a, 3b with a stroke of 1/2 pitch or more while maintaining a staggered positional relationship. That is, both hot air blowing nozzles 5a and 5b
As shown in FIG. 2, a plurality of rolling bearings 9, etc. are provided on the side walls of the distribution ducts 6a, 6b, respectively, and the rolling bearings 9 are installed on both sides of the distribution ducts 6a, 6b in parallel to the traveling direction of the cloth A. Guide rail 1
A drive device (not shown) supported by 0a and 10b and consisting of a crank mechanism or the like that reciprocates the distribution ducts 6a and 6b along guide rails 10a and 10b.
By providing the mesh belts 3a and 3b, the mesh belts 3a and 3b can be reciprocated in the advancing direction with a constant rotation. Note that the configuration for reciprocating the hot air blowing nozzles 5a and 5b is not limited to that of the above embodiment, and may be any other configuration.

Next, the operation and effects of the hot air drying/heating treatment machine will be explained.

The fabric A to be treated is inserted into the gap G between the mesh belts 3a and 3b, and the mesh belt 3
The cloth A is run and guided by the belt surfaces a and 3b. On the other hand, both hot air blowing nozzles 5a, 5
b is fabric A while maintaining the staggered positional relationship.
Both hot air blowing nozzles 5 reciprocate at a constant stroke and constant speed parallel to the traveling direction of the
Hot air of 120°C to 150°C with a constant pressure is supplied to a and 5b. Therefore, the cloth A is bent up and down by the hot air ejected from each nozzle 3a, 3b, and is curved in the shape of ~.

(Effects of the invention) In the invention, both hot air blowing nozzles are reciprocated at a constant stroke and constant speed parallel to the traveling direction of the cloth while maintaining a staggered positional relationship. As a result, the tumbling effect on the fabric is significantly enhanced compared to conventional hot air drying and heat treatment machines of this type in which the hot air blowing nozzle is fixed.

That is, when the hot air blowing nozzles are fixed, the number of tumblings of the cloth by hot air can only be obtained by the number of installed nozzles. In other words, the number of tumblings when the hot air blowing nozzle is fixed is 2N, where the number of nozzles is N (the number of one nozzle).

On the other hand, when the hot air blowing nozzle is reciprocated at high speed as in the present invention, the passing time of the cloth is t (sec), and the number of reciprocations of the hot air blowing nozzle is T (rp
s), the nozzle pitch is L (m), and the number of nozzles is N.
(number of nozzles on one side), cloth traveling speed v (m/s)
Then, the tumbling number is 2N+2T·t.

The passage time of the cloth is t≒1.4L・N/v, so 2N +1.4L・N×2×T/v=2N (1+1.4L・T/v) Ru.

Therefore, when the hot air blowing nozzle is reciprocated, the number of tumblings can be increased by (1+1.4L.T/v) compared to when the nozzle is fixed.

Now, as a practical condition, T=5 (rps) L=
0.1 (m) N=75 v=0.16 (m/s),
The number of tumblings is 2 x 75 (1 + 1.4 x 0.1 x 5 / 0.16) = 806.25, which is 5.375 times the number of tumblings when the hot air blowing nozzle is fixed, 2 x 75 = 150.

In addition, with the present invention, there is no unreasonable difference in tumbling conditions due to differences in the number of nozzles depending on the size of the equipment, as is the case with fixed nozzle types.
A constant number of tumblings can be obtained regardless of the size of the equipment. This is because the size of the equipment and the cloth speed are proportional to each other when processing the same product.

As mentioned above, the present invention has excellent practical utility.

[Brief explanation of the drawing]

FIG. 1 is a schematic longitudinal sectional side view of a hot air drying/heating machine according to the present invention, and FIG. 2 is a schematic longitudinal sectional rear view thereof. 1 is the processing machine main body, 3a and 3b are mesh belts, 5a and 5b are hot air blowing nozzles, and A is cloth.

Claims (1)

[Scope of utility model registration request] Two mesh belts 3a and 3b running at a constant speed with a constant gap G are arranged in the processing machine main body 1,
On each back side of both mesh belts 3a, 3b, a plurality of hot air blowing nozzles 5 on one side are installed adjacent thereto.
A and the hot air blowing nozzle 5b on the other side are arranged in a staggered manner while facing each other, and while maintaining the staggered position of both the hot air blowing nozzles 5a and 5b, the hot air blowing nozzle 5a and the hot air blowing nozzle 5b are arranged in a staggered manner. A hot air drying/heating machine characterized by reciprocating the mesh belts 3a, 3b in the advancing direction with a stroke to enhance the tumbling effect on the cloth A running between the mesh belts 3a, 3b.