JP4854025B2 - Dewatering method and dewatering device for processing object in drum rotary dyeing machine - Google Patents

Description

  The present invention relates to a dewatering method and a dewatering device for a drum rotary dyeing machine for processing objects.

  Here, the object to be treated includes synthetic fibers such as polyester, polyester blended and woven products, cellulose fibers such as synthetic leather, cotton, rayon and hemp, and blended products including these cellulose fibers.

  In the conventional dewatering method and dewatering apparatus of the drum rotary dyeing machine, when the workpiece is dewatered, the drum is rotated in one direction. For this reason, the object to be processed moves in the outer peripheral direction of the drum, is pressed by centrifugal force, and the position is not easily changed, and the moisture content between the object to be processed located on the inner periphery of the drum and the object to be processed located on the outer periphery is There was a difference.

In addition, while the drum is rotating, the object to be processed pressed against the outer periphery of the drum is dehydrated while maintaining substantially the same shape, so that the object to be processed can be broken into a high density part and a low part, There was a difference in moisture content.
Method and apparatus for centrifugal dehydration of pallets, etc.

  In conventional drum rotary dyeing machines, there is a difference in the moisture content of the material to be treated, and the drying time must be set according to the material to be dyed with a high moisture content. There was a problem. An object of the present invention is to solve these problems.

  Therefore, in the present invention, in the dehydration step, dehydration is performed so that the moisture content of the object to be processed is uniform, and the overall moisture content can be reduced.

In order to achieve the above object, as a first invention of the present invention, a drum as an inner cylinder provided rotatably around a horizontal axis in an outer cylinder is loaded with an object to be processed such as an object to be rotated. In a dewatering method in a drum rotary dyeing machine that performs dewatering treatment, the drum rotation direction is rotated forward and stopped, the forward rotation or reverse rotation is rotated and stopped, and the inner periphery, outer periphery, or fold of the object to be processed is stopped. The process of varying the position was repeated, and a dewatering method for the object to be processed in the drum rotary dyeing machine for reducing the average moisture content of the object to be processed was obtained.

  Further, as a second invention, as a method for dewatering the workpiece in the drum, the entire dewatering step is about 18 minutes (about 20 minutes), and the rotation time of normal rotation or reverse rotation is stopped 6 times every 3 minutes. A dewatering method for the object to be processed in a drum rotary dyeing machine, in which steps are taken to change the inner circumference, outer periphery or folding position of the object to be processed in order to reduce the average moisture content of the object to be processed. did.

Further, as a third invention, a drum rotation for performing a dehydration process by loading an object to be processed such as an object to be dyed into an inner cylinder rotatably provided around a horizontal axis in the outer cylinder and rotationally driving the drum. In a type dyeing machine, the object to be processed is hooked on a protrusion provided in the drum and linked with the rotation of the drum, and the drum is driven to rotate forward, stop, forward or reverse rotation , and stop. A dewatering device for an object to be processed in a drum rotary dyeing machine is characterized in that the motor is controlled to change the position of the object to be processed to lower the average moisture content.

  By using the dehydrating method and the dehydrating apparatus of the present invention, the dehydration rate of the object to be dyed is improved, the total moisture content of the object to be processed is reduced, and the time for the subsequent drying process can be shortened.

  The shape of the object to be processed used in the dehydration method and dehydration apparatus of the present invention can correspond to all shapes and forms of non-woven fabrics such as artificial leather, fabrics, knits, products (garment) and the like.

In addition, the form during the dehydration process includes a drum rotating type, particularly a round tank type drum dyeing machine, in which the drum rotates to process fabrics and products.
Furthermore, the scope of the purpose of the dehydration process includes all processes for the purpose of pretreatment, dyeing, and dehydration using a machine that rotates a drum.

  The structure of the drum rotary dyeing machine of the present invention is shown in FIGS.

  1 and 2, reference numeral 1 denotes a dyeing tank, 2 denotes a drum, which is provided in the outer body of the dyeing tank 1, and is provided so as to be rotatable around a horizontal axis. 3 is a bearing which supports the shaft 4. A drive motor 5 is controlled so that the drum 2 can be normally rotated, stopped, re-rotated (including reverse rotation), and intermittently operated. The rotation speed of the drum can be adjusted by a drive motor, and the rotation direction can be arbitrarily changed. When the drum is re-rotated, either forward rotation or reverse rotation is possible.

  Reference numeral 6 denotes a protrusion, which is provided in the drum 2 so that the object to be processed follows the rotation of the drum.

  FIG. 3 shows the state of the workpiece 7 during the spin-drying rotation. The workpiece 7 is in a state where it receives centrifugal force due to drum rotation, is pressed against the outer periphery of the drum, and is caught by the protrusion 6. The water in the workpiece 7 is dehydrated by the rotation of the drum.

  FIG. 4 is a diagram illustrating a state of the workpiece 8 when the drum is temporarily stopped. The workpiece 8 collapses downward under the influence of gravity, and when the workpiece 8 is rotated again, the positional relationship of the workpiece is changed.

  The stop time is 3 seconds, and even if it is stopped 5 times, 5 × 3 seconds = 15 seconds, which is shorter than 18 minutes of the entire stroke. Therefore, the stop time has almost no influence on the entire process time.

  Here, the Example of the dehydration processing method and dehydration apparatus of this invention is shown. First, as an example for comparison, the results of the average moisture content, maximum moisture content, and minimum moisture content after dehydration when the rotating state of the drum is continuously rotated forward for 18 minutes are shown below.

Here, 23 pieces of underwear 63g / piece and 26 pieces of stockings 63g / piece were introduced as objects to be treated. The total capacity of the drum was 3.1 kg, the size of the dewatering drum was set to an inner diameter of φ600 mm × the straight body portion of 400 mm , and the dewatering speed was 250 rpm.

Next, as Example 1 of the present invention, the results of the average moisture content, the maximum moisture content, and the minimum moisture content after dehydration when the process of “stopping after normal rotation for 3 minutes” is repeated 6 times are shown below. .

  The dehydration time in Example 1 and the continuous dehydration time in the comparative example are both 18 minutes and the same time.

However, in the first embodiment, since the “stop” step is included, the workpiece is moved downward due to the influence of gravity , and the workpiece on the inner periphery of the drum whose dehydration condition is bad changes its position. . By repeating this, the dewatering conditions of all the objects to be processed become uniform, and the water is dehydrated fairly. As a result, the minimum moisture content after dehydration was not changed, but the maximum moisture content was lowered, and the effect of lowering the moisture content as a whole could be obtained.

Next, as Example 2, the results of average moisture content, maximum moisture content, and minimum moisture content after dehydration when the steps of “stop after 3 minutes in normal rotation” and “stop after 3 minutes in reverse rotation” are repeated. Is shown below.

In the second embodiment, the rotation direction in the dehydration step is changed to the reverse rotation after stopping the normal rotation, so that the workpiece on the inner periphery of the drum changes its position at the start of the reverse rotation, It turns out that it dehydrates well.
The same effect as in the case of Example 1 was obtained.

  By temporarily stopping the dehydration of the drum rotary dyeing machine, changing the inner circumference, the outer circumference position, and the folding position of the internal dyed object and dehydrating again, the dehydrated state of the object to be treated can be made uniform. After dehydration, the time can be shortened even when moving to the drying process.

Diagram showing the entire drum rotary dyeing machine Diagram showing the structure inside the drum The figure which shows the state of the to-be-processed object when the drum is dehydrating and rotating The figure which shows the state of the to-be-processed object when rotation of a drum is once stopped

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dyeing tank 2 Drum 3 Bearing 4 Shaft 5 Drive motor 6 Protrusion 7 Processed object 8 Processed object

Claims (3)

In a dewatering method in a drum rotary dyeing machine in which a drum as an inner drum provided rotatably around a horizontal axis in an outer cylinder is loaded with a workpiece such as a dyed article and rotationally driven to perform dehydration processing , Rotate the drum in the normal direction, stop it, rotate it forward or reverse again , stop it, and repeat the process of causing fluctuations in the inner circumference, outer circumference, or folding position of the workpiece. A method of dewatering an object to be processed in a drum rotary dyeing machine, wherein the rate is reduced.   As a dewatering method for the object to be processed in the drum, the entire dewatering process is set to about 18 minutes, and the stop is incorporated about 6 times every 3 minutes, and the inner periphery, the outer periphery or the folding position of the object to be processed is successively changed. 2. The method for dewatering an object to be processed in a drum rotary dyeing machine according to claim 1, wherein said process is provided to reduce the average moisture content of the object to be processed. In a drum rotary dyeing machine that dehydrates the drum as an inner drum that is rotatably provided around the horizontal axis in the outer drum and rotates the drum. The object is hooked on the protrusion provided in the drum and interlocked with the rotation of the drum, and the drive motor is controlled so as to stop the drum in the normal rotation, stop, normal rotation or reverse rotation , and stop. An apparatus for dewatering an object to be processed in a drum rotary dyeing machine, wherein the average moisture content is lowered by changing the position of the object.

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