Patent Description:
With the continuous improvement of people's quality of life and the continuous promotion of modern technology, people have an increasingly high pursuit to the color of fabrics. For pure color dyeing of different types of fabrics, a traditional dyeing process can be used to dye, and a digital printer can be used to print individual colors. Document <CIT> discloses such a digital inkjet dyeing machine.

The traditional dyeing process of fabrics can be classified into dip dyeing and pad dyeing according to different contact modes between dye and fabric. The dip dyeing is a dyeing method in which a to-be-dyed fabric is immersed in dye liquor, and the dye is evenly applied to the textile by circulating the dye liquor and relatively moving the to-be-dyed fabric, wherein when the dip dyeing is performed, the dye and the fabric can be circulated simultaneously or individually. The pad dyeing is to immerse an open-width fabric in a dye liquor for a short time, then squeeze the dye liquor into the interior of the fiber and the gaps of the fabric tissue through the pressure roller, and remove the redundant dye liquor, so as to distribute the dye evenly on the fabric, wherein the fabric, after being immersed and padded with the dye, is steamed or baked to complete the diffusion and fixation of the dye on the fiber. However, the traditional dyeing process has disadvantages as follows: large minimum order quantity, large color matching differences, large water consumption, large usage amount of steam, large differences between color matching and dyeing matching, and more reliance on the skill of the dyeing personnel; consequently, the traditional dyeing process is not environmentally friendly, high in cost, and low in efficiency. The traditional dyeing process has advantages as follows: wide color gamut, good dyeing uniformity, and high level of depth and hue.

However, all the pure color printing achieved by digital printing in the current market is based on a printing mode of a digital printing machine, wherein various colors are dotted by a positioning dotting mode to achieve the pure color under the visual effect. This printing method has problems that the printed pure color fabric is visually a dot-like grainy, resulting in rough dots, insufficient hue and saturation of color, insufficient depth and ink volume, and unsatisfactory color consistency. Consequently, the digital printing machine has the disadvantage that industrialization, large-block-surface, high-speed, and long-time pure color block printing cannot be achieved. In addition, the digital printing machine has high requirements for color management when printing, however, the degree of color restoration cannot meet the requirements of pure color printing, and the color gamut that can be printed is limited.

In view of this, how to overcome the disadvantages that the traditional dyeing process is not environment-friendly, has high cost and low efficiency, and the digital pure color printing is dot-like grainy and has a low color precision, when pure color dyeing is performed, becomes an subject to be researched and solved by the present disclosure.

An objective of the present disclosure is to provide a digital inkjet dyeing machine, which overcomes the disadvantages that the traditional dyeing process is not environment-friendly, and has high cost and low efficiency, and the digital pure color printing is dot-like grainy and has a low color precision, when pure color dyeing is performed. The digital inkjet dyeing machine of the present disclosure has the advantages of both traditional dyeing process and digital printing, such as cleaning, fastness, complete color matching of printed samples and mass production, wide color gamut, very good uniformity, and the same depth and hue as traditional dyeing.

To achieve the above objective, the present disclosure adopts a technical solution as follows: a digital inkjet dyeing machine, configured to perform pure color digital dyeing on a fabric and including an unwinding and feeding device, an inkjet device, a drying device, and a winding device that are sequentially arranged in a fabric feeding direction,.

The innovation points are as follows: the inkjet device includes a machine body, a controller, an ink tank, a cleaning liquid tank, a waste liquid bucket, and an inkjet module;.

The related contents of the present disclosure are explained as follows:.

Through the application of the above solution, compared with the conventional technology, the present disclosure has the following advantages and effects:.

To make the objectives, features, and advantages of the present disclosure clear and more comprehensible, the specific embodiments of the present disclosure are described in detail with reference to the drawings. In the following description, many specific details are explained in order for those skilled in the art to fully understand the present disclosure. However, the present disclosure can be implemented in many other manners different from those described herein. Those skilled in the art may make similar improvements without departing from the spirit of the present disclosure. Therefore, the present disclosure is not limited by the specific embodiments disclosed below.

The present disclosure is further described below with reference to the drawings and embodiments.

As shown in <FIG> and <FIG>, an embodiment of the present disclosure provides a digital inkjet dyeing machine, which is configured to perform pure color digital dyeing on a fabric and includes an unwinding and feeding device <NUM>, an inkjet device <NUM>, a drying device <NUM>, and a winding device <NUM> that are sequentially arranged in a fabric feeding direction, wherein the unwinding and feeding device <NUM> is configured to convey a to-be-dyed fabric to a station of the inkjet device <NUM>; the inkjet device <NUM> is configured to perform inkjet printing on the fabric by using prepared ink; the drying device <NUM> is configured to dry the dyed fabric; and the winding device <NUM> is configured to wind the dried fabric.

According to an embodiment of the present disclosure, as shown in <FIG> and <FIG>, the inkjet device <NUM> includes a machine body <NUM>, a controller <NUM>, an ink tank <NUM>, a cleaning liquid tank <NUM>, a waste liquid bucket <NUM>, and an inkjet module <NUM>, wherein the machine body <NUM> is provided with at least two groups of inkjet modules <NUM>, at least one ink tank <NUM>, at least one cleaning liquid tank <NUM>, and at least one waste liquid bucket <NUM>, wherein the ink tank <NUM> is a container for containing ink, the cleaning liquid tank <NUM> is a container for containing a cleaning liquid, and the waste liquid bucket <NUM> is a container for collecting waste liquid; and wherein the machine body <NUM> is provided with a working area <NUM> and a cleaning area <NUM>; the inkjet module <NUM> is installed on the machine body <NUM> and can be moved between the working area <NUM> and the cleaning area <NUM>; the inkjet module <NUM> includes spray head <NUM>, a positioning frame <NUM>, and a supporting and moving mechanism <NUM>; a plurality of spray heads <NUM> arranged in parallel form a spray head group, each inkjet module <NUM> includes at least one spray head group, wherein the spray heads <NUM> are connected through ink pipelines <NUM>, the ink pipelines <NUM> are connected to the ink tank <NUM> and the cleaning liquid tank <NUM> through pipelines, an inkjet valve <NUM> is arranged on a pipeline between the ink pipeline <NUM> and the ink tank <NUM>, and a cleaning valve <NUM> is arranged on a pipeline between the ink pipeline <NUM> and the cleaning liquid tank <NUM>; and wherein the spray heads <NUM> are installed on the positioning frame <NUM>, the positioning frame <NUM> is installed on the supporting and moving mechanism <NUM>, and the supporting and moving mechanism <NUM> includes a lifting unit <NUM> configured to make the positioning frame <NUM> up and down in the working area <NUM> and a translation unit <NUM> configured to make the positioning frame <NUM> horizontally translate in the cleaning area <NUM>; and a cleaning support flow guide plate <NUM> is arranged below the cleaning area <NUM>, a flow guide hole <NUM> for waste liquid to flow out is formed in the cleaning support flow guide plate <NUM>, and the waste liquid enters the waste liquid bucket <NUM> through the flow guide hole <NUM>.

The working procedure of the embodiment of the present disclosure may be referred to as follows: performing fixed single-channel inkjet dyeing production, and putting a pretreated to-be-dyed fabric on a machine; filling an ink system with a colored ink; starting the machine, conveying the to-be-dyed fabric to a station of the inkjet device <NUM> by the unwinding and feeding device <NUM>, directly spraying and dyeing the ink by the inkjet device <NUM>, and inkjet-printing the prepared ink onto the fabric; conveying the printed fabric into the drying device <NUM> through a guide belt; and winding the dried fabric by the winding device <NUM>. Nodes are added for the newly added colors, so that accuracy of the formula of the colors added later is greatly improved.

Taking two groups of inkjet modules <NUM> provided in the present disclosure as an example, since the machine body <NUM> of the inkjet modules <NUM> has the working area <NUM> and the cleaning area <NUM>, only one group of inkjet modules <NUM> work during the dyeing work using the digital inkjet dyeing machine. Specifically, as shown in <FIG>, when a first group of inkjet modules <NUM> work, the supporting and moving mechanism <NUM> moves the spray head group to the inkjet position in the working area <NUM>, and lowered the spray head to a certain height for inkjet work, a second group of inkjet modules <NUM> enter the cleaning area <NUM> under the control of the controller <NUM> for cleaning and ink changing works, and when the first group of inkjet modules <NUM> complete inkjet and need to be cleaned and ink changed (color changed), the supporting and moving mechanism <NUM> first raises the inkjet modules <NUM> to a certain height, and then horizontally moves the spray head group to the cleaning area <NUM>, that is, moves to above the cleaning support flow guide plate <NUM> for cleaning and ink changing works. The procedure of the cleaning and ink changing works may be referred to as follows: firstly, the ink in the other inkjet modules <NUM> is emptied, then cleaning valves <NUM> of a cleaning liquid pool communicated with other inkjet modules <NUM> are opened for cleaning, after cleaning is completed, valves of an inkjet pool with the prepared ink are opened, and the ink entering other inkjet modules <NUM> to prepare for printing of the next color.

According to the above embodiment of the present disclosure, the supporting and moving mechanism <NUM> is mainly composed of a motor driver with lifting and moving functions, that is, the lifting unit <NUM> and the translation unit <NUM> both use the motor driver. The upper surface of the flow guide plate is provided with a trapezoidal flow guide groove <NUM>, and the flow guide hole <NUM> is positioned at a bottom of the flow guide groove, so that the cleaning efficiency is accelerated. Meanwhile, a bottom of the machine body is provided with a universal wheel <NUM>, so that the whole machine body can move conveniently.

According to the above embodiment of the present disclosure, the spray head <NUM> uses a spray head <NUM> with an inkjet amount of <NUM> pl to <NUM> pl, wherein the used ink is compatible with the ink used by the digital printing machine, and it can also use special ink for the digital dyeing machine, which has a large particle size range, less damage to the chromogenic groups, and a color development effect that is greatly improved compared to the color development effect of printing pure color by the printing machine.

According to the above embodiment of the present disclosure, the spray heads <NUM> in the inkjet module <NUM> are connected by pipeline in a single-channel series connection mode. The ink is jetted and printed on the cloth surface by a row of fixed spray heads <NUM> in a single channel, so that the most troublesome feeling of point-like grainy that occurs in a digital printing machine will not be caused.

According to the above embodiment of the present disclosure, the digital inkjet dyeing machine is further provided with a belt guide device <NUM>, which is arranged between the inkjet device <NUM> and the drying device <NUM> and is configured to convey a fabric dyed by the inkjet device <NUM> into the drying device <NUM>.

According to the above embodiment of the present disclosure, the controller <NUM> is electrically connected to the control circuit, the control circuit is electrically connected to the execution components at the same time, and the controller <NUM> performs the associated control with the spray head <NUM>, the inkjet valve <NUM>, the cleaning valve <NUM>, the motor driver, and the like. Since the components such as the unwinding and feeding device <NUM>, the inkjet device <NUM>, the drying device <NUM>, the winding device <NUM> are all common mechanisms in the field of dyeing machines, detailed structures thereof will not be described; similarly, the components such as the unwinding and feeding device <NUM>, the inkjet device <NUM>, the drying device <NUM>, the winding device <NUM>, the motor driver belong to the conventional technology, are not the inventive point of the present disclosure, and therefore they are not described herein again.

For the above embodiments, possible changes in the present disclosure are described as follows:.

Claim 1:
A digital inkjet dyeing machine, configured to perform digital dyeing of solid color on a fabric, and comprising an unwinding and feeding device (<NUM>), an inkjet device (<NUM>), a drying device (<NUM>), and a winding device (<NUM>) which are sequentially arranged in a fabric feeding direction, wherein
the inkjet device (<NUM>) comprises a machine body (<NUM>), a controller (<NUM>), an ink tank (<NUM>), a cleaning liquid tank (<NUM>), and inkjet modules (<NUM>);
the machine body (<NUM>) is provided with at least two groups of the inkjet modules (<NUM>), at least one ink tank (<NUM>), and at least one cleaning liquid tank (<NUM>), wherein the ink tank (<NUM>) is a container for containing ink, and the cleaning liquid tank (<NUM>) is a container for containing cleaning liquid;
the machine body (<NUM>) is provided with a working area (<NUM>) and a cleaning area (<NUM>); the inkjet modules (<NUM>) are installed on the machine body (<NUM>) and are displaceable between the working area (<NUM>) and the cleaning area (<NUM>);
each of the inkjet module (<NUM>) comprises spray heads (<NUM>), a positioning frame (<NUM>), and a supporting and moving mechanism (<NUM>), wherein the spray heads (<NUM>) are arranged in parallel and form a spray head group, each inkjet module (<NUM>) comprises at least one spray head group, the spray heads (<NUM>) are connected through ink pipelines (<NUM>), the ink pipelines (<NUM>) are connected to the ink tank (<NUM>) and the cleaning liquid tank (<NUM>) through pipelines, an inkjet valve (<NUM>) is arranged on a pipeline between the ink pipeline (<NUM>) and the ink tank (<NUM>), and a cleaning valve (<NUM>) is arranged on a pipeline between the ink pipeline (<NUM>) and the cleaning liquid tank (<NUM>); and wherein the spray heads (<NUM>) are installed on the positioning frame (<NUM>), the positioning frame (<NUM>) is installed on the supporting and moving mechanism (<NUM>), and the supporting and moving mechanism (<NUM>) comprises a lifting unit (<NUM>) configured to drive the positioning frame (<NUM>) up and down in the working area (<NUM>), and a translation unit (<NUM>) configured to drive the positioning frame (<NUM>) to horizontally translate in the cleaning area (<NUM>).