Small dyeing apparatus with drying function and dyeing method

Abstract

To provide a dyeing device with which fabrics can be dyed through being immersed in a dyeing liquid.SOLUTION: A dyeing device includes a rotation drum 3 in which a fabric 8 is contained and a container 2 in which the rotation drum 3 is contained and attached, and a lid 5 which can be opened / closed is attached on the front face of the container 2. The rotation drum 3 is attached to a shaft 4 which is located in the posterior side and rotatably supported in a manner in which it can repeatedly rotate in a positive rotation direction and a negative rotation direction, and a gap 9 is formed between the rotation drum 3 and the container 2 and also an electric heater 10 and a cooling tube 11 in which cooling water flows are placed in the gap 9, and an upper valve 18 and a lower valve 19 are respectively located in the upper part and the lower part of the container 2 and can be opened / closed as necessary.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a small-sized dyeing apparatus with a drying function and a dyeing method, which are directed to small lots of fabrics, sewn products, second-hand clothes, and the like.

Background Art

[0002] Dyeing is the process of coloring fiber fabrics and the like using dyes or pigments, and the dyes or pigments can penetrate into the fabrics. By the way, there are various types of dyeing apparatuses. (1) Jigger dyeing machine The fabric wound around a roll can be repeatedly immersed in a dyeing solution while being wound around another roll and then rewound, thereby performing dyeing. This jigger dyeing machine is suitable for small-lot fabrics and is suitable for dyeing high-density fabrics.

[0003] (2) Winch dyeing machine In this machine, the rope-shaped fabric can be dyed while being rotated in a dyeing tank. Although it can be dyed with a bulging texture, since the fabric is pulled by a reel, the fabric becomes rope-shaped and is likely to wrinkle. (3) Liquid flow dyeing machine The fabric is made into a rope shape, and the dyeing solution is sprayed to circulate the fabric while dyeing. It is similar in principle to the winch dyeing machine, but since the dye flows in a long cylinder, the fabric can be dyed without being subjected to a large tension.

[0004] The "Dyeing Machine and Dyeing Method" according to Japanese Patent Application Laid-Open No. 2002-309476 is a small-sized dyeing machine in which dyeing unevenness is less likely to occur. Therefore, it includes a substantially long cylindrical dyeing container for accommodating the object to be dyed and the dye solution in a sealed state, and a rotating shaft whose rotation axis extends in a substantially horizontal direction and rotates together with the dyeing container. The dyeing container is attached so as to be inclined with respect to the rotating shaft and substantially intersect the rotation axis. While the dyeing container makes one rotation around the rotating axis, the upper end of the dyeing container faces downward and then returns to the original upper end position again.

[0005] The "Processing Apparatus for Textile Products" according to Japanese Patent Application Laid-Open No. 2001-55662 is a small-sized processing apparatus for textile products that can significantly reduce the amount of processing liquids such as chemical liquids and dyes, and has a high heat exchange rate of the processing liquids. Therefore, it includes a horizontally cylindrical water tank, a disk-shaped door that seals the front of the water tank, a first rotating means built into the water tank for rotating the textile product, a shaft detachably attached to the rear of the first rotating means, a driving means for driving the shaft, and a heat exchanger provided at a predetermined location on the outer periphery partitioned along the inner circumference of the water tank for taking in and out heating and cooling media such as steam and cooling water through an entrance and exit.

[0006] By the way, a dyeing apparatus includes a large cylindrical water tank for accommodating a dyeing solution and a fabric. However, in order to miniaturize it, the water tank has to be made smaller. However, when the water tank becomes smaller, problems such as uneven dyeing occur.

Patent Document 1

Patent Document 2

Disclosure of the Invention

Problems to be Solved by the Invention

[0007] In this way, various methods for dyeing fabrics are known, but conventional dyeing apparatuses are large-sized and cannot handle small lots and multiple varieties. That is, if a large-sized dyeing apparatus is used, at least a certain amount of dyeing solution is required for the fabric to be dyed, and also a predetermined amount of dyes and pigments is required to maintain a certain concentration, resulting in high dyeing costs. The problem to be solved by the present invention is this issue, and to provide a dyeing apparatus and a dyeing method that can easily handle small lots and multiple varieties of fabrics, as well as sewn products and used clothes, etc., without uneven dyeing or wrinkles.

Means for Solving the Problems

[0008] The dyeing apparatus according to the present invention is provided with a rotating drum disposed horizontally inside a container. The horizontally disposed rotating drum is attached to a shaft extending rearward, and the shaft is pivotally supported by a bearing, and the rotating drum can also rotate forward and backward repeatedly by repeatedly rotating forward and backward. If it rotates continuously in one direction many times, the fabric will become wrinkled and prone to uneven dyeing. However, the present invention controls it to rotate forward and backward repeatedly in order to prevent this. A drive motor is installed inside the main body, and the above shaft is rotationally driven by the drive motor, but the rotation speed and the timing of forward and reverse rotation can be varied.

[0009] The above rotating drum is cylindrical, and a plurality of holes are formed on the outer peripheral surface, and the front is open. However, a lid is attached to the container in order to close the opening and make it airtight. Valves are provided at the upper and lower parts of the container. Liquid can be injected from the upper valve, and dyes and pigments can be put in. After the dyeing is completed, drainage can be done from the lower valve.

[0010] An appropriate gap is provided between the rotating drum and the container, and an electric heater and a cooling pipe are accommodated in this gap. On the other hand, if the valves provided at the upper and lower parts of the container are opened to send air after the dyeing is completed, hot air is generated by the electric heater, and the dyed fabric can be quickly dried. However, the temperature of the electric heater is adjusted so that the fabric does not become over-dried.

Effects of the Invention

[0011] The dyeing apparatus according to the present invention is provided with a rotating drum inside the container. If the fabric is put into the rotating drum and rotated forward and backward, the fabric is stirred and dyed with the dyeing liquid. The main body containing the container has longitudinal, lateral, and depth dimensions of around 1000 mm, which can be made very small compared to conventional dyeing apparatuses. Therefore, only a small amount of dyeing solution, dyes, and pigments are required, and even with a small amount of fabric, it is possible to easily perform dyeing, and the dyeing cost is also reduced. And the amount of drainage is small, and the cost required for treatment is also reduced.

[0012] As a means for heating the dyeing solution, steam is not used, and for this reason, a boiler is not required, and it can be heated by an electric heater, and it can also be cooled using cooling water. Therefore, the temperature of the dyeing solution can be optimally controlled by the electric heater and the cooling water. By providing blades on the inner peripheral surface of the rotary drum, the fabric is agitated, and moreover, the rotary drum does not rotate continuously in one direction, but rotates forward and backward at predetermined intervals, so that the fabric does not wrinkle and no uneven dyeing occurs. The dyeing apparatus of the present invention enables normal-temperature dyeing, high-pressure dyeing, and drying to be performed with a single unit.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0014] FIG. 1 is an external view showing a dyeing apparatus according to the present invention, and FIG. 2 shows a front view and a side view of the dyeing apparatus. In the figure, 1 represents the main body, 2 represents the container, and 3 represents the rotating drum. A lid 5 is provided on the front surface 4 of the main body 1. When the lid 5 is opened, the openings of the container 2 and the rotating drum 3 are exposed. By the way, the rotating drum 3 contains the fabric to be dyed and also contains the dyeing solution, and the rotating drum 3 can rotate repeatedly in the forward and reverse directions.

[0015] FIG. 3 is an embodiment showing the structures of the container 2 and the rotating drum 3. The rotating drum 3 is cylindrical and is concentric with the cylindrical container 2 and is housed inside. The rotating drum 3 is attached to a shaft 4 extending from the rear end, and can rotate as the shaft 4 rotates. The shaft 4 is supported by bearings 20, 20 provided at a predetermined interval, and a drive motor 6 is provided at the tip of the shaft 4, and can rotate by obtaining power from the drive motor 6.

[0016] Here, the shaft 4 extends from a shaft hole provided in the container 2 and is supported by the bearings 20, 20, and a shaft seal 21 is provided in the shaft hole so that water does not leak even when internal pressure acts on the container 2. The container 2 functions as a pressure vessel and can perform dyeing up to 140°C.

[0017] A plurality of blades 7, 7... protrude from the inner peripheral surface of the rotating drum 3. When the rotating drum 3 rotates, the fabrics 8, 8... housed inside are agitated. The rotating drum 3 is housed in the container 2, and an electric heater 10 and a cooling pipe 11 are attached to the gap 9 formed therebetween. FIG. 4 shows a detailed view when the electric heater 10 and the cooling pipe 11 are attached to the gap 9 inside the container.

[0018] The electric heater 10 is zigzag-shaped and curved. By forming a zigzag, the surface area is increased. An electric wire 12 is inserted into the pipe, and the surface 13 is heated. The cooling pipe 11 is also curved in a zigzag shape, increasing the surface area. Cooling water 15 flows through the pipe, and the surface 14 is cooled. The cooling water 15 flows in from one side and out from the other side.

[0019] The above-mentioned electric heater 10 and cooling pipe 11 are arranged below the gap 9 formed between the container 2 and the rotary drum 3 and are covered with the dyeing liquid 16 placed in the container 2. That is, the dyeing liquid 16 placed in the container 2 is configured such that most of the fabric 8 housed in the rotary drum 3 and the electric heater 10 and cooling pipe 11 attached to the gap 9 are located below the dyeing liquid surface 17.

[0020] An upper valve 18 is provided at the upper part of the container 2, and a lower valve 19 is provided at the lower part. These upper valve 18 and lower valve 19 communicate with the inside of the container. Therefore, when injecting the dyeing liquid 16 into the container, it can be injected from the upper valve 18, and when flowing the dyeing liquid 16 in the container, it can be discharged from the lower valve 19. Therefore, when injecting the dyeing liquid 16, the lower valve 19 is closed, and when the rotary drum 3 rotates, the upper valve 18 is also closed.

[0021] Then, when the rotary drum 3 is rotated for a predetermined time and the fabric 8 is dyed, the drive motor 6 is stopped and the lower valve 19 is opened, and the dyeing liquid 16 in the container 2 flows out. At this time, the dyeing liquid 16 in the rotary drum 3 can flow down into the container through a plurality of holes penetrating the outer peripheral surface and flow out from the lower valve 19. If the dyeing liquid 16 in the container has flowed out, drying can be performed using the same container 2 and rotary drum 3.

[0022] Therefore, the drive motor 6 gradually increases its speed to dehydrate the moisture of the fabric by centrifugal force and discharge it from the lower valve 19. At this time, it is equipped with anti-vibration rotation control so that the rotating drum 3 does not vibrate under centrifugal force. That is, if the fabric 8 adheres to the rotating drum 3 unevenly, it will vibrate due to high-speed rotation, but a rotation control mechanism is added so that the fabric 8 adheres evenly.

[0023] Figure 5 shows an embodiment of the drying process. Both the upper valve 18 and the lower valve 19 of the container 2 are opened, air can be sent from the lower valve 19, and exhausted from the upper valve 18. In this case, the cooling pipe 15 is shut off, and by turning on the electric heater 10, the air flowing in from the lower valve 19 is heated, and the rotating drum 3 is heated. The rotating drum 3 is repeatedly rotated in the forward and reverse directions by the drive motor 6, and the fabric 8 accommodated inside the rotating drum 3 is dried.

[0024] That is, the dyeing apparatus of the present invention can dye the fabric 8 and can also dry it in the state as it is without taking out the fabric 8. The electric heater 10 is used for drying the fabric 8, and this electric heater 10 also serves as the electric heater for dyeing. On the other hand, as a heat source for drying, it is possible to use an external heater in addition to the above-mentioned electric heater 10, and air can be blown from the lower valve 19.

Explanation of Reference Numerals

[0025] 1 Main body 2 Container 3 Rotating drum 4 Front 5 Lid 6 Drive motor 7 Blades 8 Fabric 9 Gap 10 Electric heater 11 Cooling pipe 12 Electric wire 13 Surface 14 Surface 15 Cooling water 16 Dyeing solution 17 Dyeing liquid level 18 Upper valve 19 Lower valve 20 Bearing 21 Shaft seal

Claims

1. In a dyeing apparatus capable of dyeing raw fabric, sewn products, and second-hand clothes by immersing them in a dyeing solution, the dyeing apparatus has a rotating drum for accommodating the raw fabric, a container for accommodating and mounting the rotating drum, a lid that can be opened and closed is attached to the front of the container, the rotating drum is attached to a shaft provided at the rear and is pivotally supported so as to be repeatedly rotatable in the forward and reverse directions, a gap is provided between the rotating drum and the container, and an electric heater and a cooling pipe through which cooling water flows are attached to the gap, and an upper valve is provided at the upper part of the container and a lower valve is provided at the lower part so that they can be opened and closed as needed. When dyeing, the lower valve is closed and the dyeing solution is injected from the upper valve, and the rotating drum is rotated. When drying the dyed raw fabric, the upper valve and the lower valve are opened, air is allowed to flow in from the lower valve, the electric heater is turned on, and warm air is allowed to flow out from the upper valve. A dyeing apparatus with a drying function, characterized in that it is configured as described above.

2. The dyeing apparatus with a drying function according to Claim 1, wherein a plurality of blades are provided protruding from the inner peripheral surface of the rotating drum.

3. The dyeing apparatus with a drying function according to Claim 1 or Claim 2, wherein the electric heater used during drying also serves as the electric heater for raising the temperature of the dyeing solution during dyeing.

4. The dyeing apparatus with a drying function according to Claim 1, Claim 2, or Claim 3, wherein the rotation speed of the rotating drum and the timing of forward and reverse rotation can be freely varied.

5. The dyeing apparatus with a drying function according to Claim 1, Claim 2, Claim 3, or Claim 4, wherein a rotation control mechanism is added to control the rotation so that when the rotating drum rotates at high speed during dehydration, the raw fabric adheres evenly to the rotating drum without being biased.

6. In a dyeing method in which a fabric, a sewn product, or second-hand clothing can be dyed by immersing it in a dyeing solution, there is a rotating drum for accommodating the fabric, a container for accommodating and mounting the rotating drum, and a lid that can be opened and closed is attached to the front of the container. The rotating drum is pivotally supported so that it can rotate repeatedly in the forward and reverse directions. A gap is provided between the rotating drum and the container, and an electric heater and a cooling pipe through which cooling water flows are attached to the gap. An upper valve is provided at the upper part of the container and a lower valve is provided at the lower part so that they can be opened and closed as required. When dyeing, the lower valve is closed and the dyeing solution is injected from the upper valve. The dyeing solution is heated by the electric heater and the rotating drum is rotated. When drying the dyed fabric, the upper valve and the lower valve are opened, air flows in from the lower valve, the electric heater is turned on, and warm air flows out from the upper valve. This is a characteristic dyeing method.

7. The dyeing method according to claim 6, wherein a plurality of blades project from the inner peripheral surface of the rotating drum, and the fabric accommodated by the blades is stirred.

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