Abstract
A conveyor driven fabric dyeing machine includes a dyeing tube for improving fabric dyeing effect. The dyeing tube is arranged rearward of or below a nozzle and has an entrance opening and an exit opening and an intermediate section located between and set lower than the entrance opening and the exit opening so as to form height differences at front and rear end parts of the dyeing tube that allows dye liquid to fill up and remain in the dyeing tube. During a course of fabric moving through the dyeing tube, the fabric is allowed to stay and soak in the dye liquid within the dyeing tube to provide an extended period of time of interaction between the fabric and the dye liquid for penetration so as to enhance the result of dyeing.
Claims
1. A conveyor driven fabric dyeing machine comprising a dyeing tube having a structure that allows for improving a dyeing result of fabric, wherein the dyeing tube is arranged and mounted rearward of or below a nozzle, the dyeing tube comprising a fabric and liquid entrance opening and a fabric and liquid exit opening, the dyeing tube having an intermediate section that is set lower than the fabric and liquid entrance opening and the fabric and liquid exit opening so that the dyeing tube is configured to include height differences that allows dye liquid to fill up an interior space of the dyeing tube and remain in the dyeing tube, wherein during a course of fabric moving through the dyeing tube, the fabric is allowed to stay and soak in the dye liquid within the dyeing tube to provide a sufficient period of time of interaction between the fabric and the dye liquid remaining in the dyeing tube and thus an extended period of time of penetration is realized to enhance the result of dyeing, wherein the dyeing tube has a configuration that provides the height differences at front and rear ends thereof.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 is a schematic view showing a conveyor driven fabric dyeing machine according to a first embodiment of the present invention.
[0009] FIG. 2 is a schematic view showing a conveyor driven fabric dyeing machine according to a second embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0010] The following descriptions are exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.
[0011] In a first embodiment shown in FIG. 1, the present invention provides an improved structure of a dyeing tube of a conveyor driven fabric dyeing machine. A general structure of the dyeing machine comprises a machine body 1 in which a conveyor 2 is arranged for conveying fabric 3 from a rear part of the machine body 1 to a front part thereof, where the fabric 3 is driven by means of a fabric guide roller 4 and an idle roller 41 to get into a nozzle 5 and the dyeing tube 12. Dye liquid L is pressurized by a pump 7 and subjected to temperature control by a heat exchanger 8 to be jetted by the nozzle 5 to drive the fabric 3 to enter the dyeing tube 12 to achieve an effect of dyeing, through interaction with, the fabric 3 that is then allowed to fall down, at the rear part of the machine body, back onto the conveyor 2 to be re-conveyed to the front part of the machine body, while the dye liquid L also falls down back to a bottom of the machine body to enter and accumulate in a liquid accumulation tank 6 and get filtered by a filter 61 for removal of impurity and subsequent pressurization by the pump 7 and temperature control by the heat exchanger 8 to be re jetted by the nozzle 5 so as to achieve a cyclic circulating motion to thereby realize the process of dyeing. A control box 9 that comprises a computer or a programmable logic controller (PLC) is operable to control or correct moving speeds of the conveyor 2 and the fabric guide roller 4 in order to achieve operation synchronization between the fabric 3 and the conveyor 2/the fabric guide roller 4 through accurately controlling the speeds thereof.
[0012] In the embodiment shown in FIG. 1, the dyeing tube 12 is structured to have a fabric and liquid entrance opening 121 (or an entrance section) that is arranged vertically in the dyeing machine and the nozzle 5 is set to jet the dye liquid into the fabric and liquid entrance opening 121 in a direction from top to bottom. The fabric and liquid entrance opening 121 of the dyeing tube 12 is set at a height that is higher than a height of a fabric and liquid exit opening 122 (or an exit section) and an intermediate section of the dyeing tube 12, which is between the entrance opening and the exit opening, is set lower than the fabric and liquid entrance opening 121 and the fabric and liquid exit opening 122, so that a first height difference d1 is present between the fabric and liquid entrance opening 121 and the dyeing tube 12 (or more precisely, the intermediate section of the dyeing tube). The height of the fabric and liquid exit opening 122 is set higher than a height of an interior top of the dyeing tube 12 so that a second height difference d2 is present between the height of the fabric and liquid exit opening 122 and the interior top of the dyeing tube 12. As such, based on the communicating vessel principle, an interior space of the dyeing tube 12 can be filled up with and hold the dye liquid therein so that during the course of moving through the dyeing tube 12, the fabric 3 may stay and soak in the dye liquid inside the dyeing tube 12 for an extended period of time to allow for an extended period of time of interaction between the fabric 3 and the dye liquid for better penetration that provides the fabric 3 with bettered and uniform result of dyeing. The dyeing tube 12 can be structured in any desired shape provided height differences of the front and rear ends thereof are present. Further, due to a dye bath body being of various different forms, the fabric and liquid entrance opening 121 may be set at a height that is lower than the fabric and liquid exit opening 122.
[0013] A second embodiment is shown in FIG. 2. The second embodiment provides a dyeing machine having a structure generally identical to that of the first embodiment with differences therebetween concerning the directions in which the dyeing tube 12 and the nozzle 5 are arranged. Thus, certain description of the structure of the dyeing machine of the second embodiment will be omitted, due to similarity thereof with the first embodiment, and a detailed description will be only given to the dyeing tube 12 of the second embodiment. In the embodiment of FIG. 2, the fabric and liquid entrance opening 121 (or entrance section) of the dyeing tube 12 is set horizontally or slightly inclined to joint to the dyeing machine, and the dye liquid is jetted by the nozzle 5 to enter through the fabric and liquid entrance opening 121. The fabric and liquid entrance opening 121 of the dyeing tube 12 is set at a height that is higher than a height of a fabric and liquid exit opening 122 (or exit section) so that a first height difference d1 is present between the fabric and liquid entrance opening 121 and the dyeing tube 12. The height of the fabric and liquid exit opening 122 is set higher than a height of an interior top of the dyeing tube 12 so that a second height difference d2 is present between the fabric and liquid exit opening 122 and the interior top of the dyeing tube 12. Thus, based on the communicating vessel principle, an interior space of the dyeing tube 12 that is below the fabric and liquid exit opening 122 may hold and retain the dye liquid therein so that during the course of moving through the dyeing tube 12, the fabric 3 may stay and soak in the dye liquid inside the dyeing tube 12 for an extended period of time to allow for an extended period of time of interaction between the fabric and the dye liquid for better penetration that provides the fabric 3 with bettered and uniform result of dyeing. With different variation of the configuration of the dyeing bath body, the fabric and liquid exit opening 122 may be set higher than the fabric and liquid entrance opening 121.
[0014] It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.
[0015] While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the claims of the present invention.
