KR101643854B1 - Digital textile printer having fluff removing unit - Google Patents

Abstract

The present invention relates to a digital textile printer with a fluff removing device comprising: a fabric supplying unit supplying a fabric; a print head printing on the fabric; the fluff removing device installed between the fabric supplying unit and the print head, removing fluffs of the fabric supplied from the fabric supplying unit; and a winding unit winding the fabric in which printing by the print head is completed again. The fluff removing device includes a guide roller installed in an upper side of the fabric supplying unit, guiding the fabric supplied by the fabric guiding unit while coming in contact with a rear surface of the fabric; a fluff removing roller installed in an upper side of the guide roller to be able to rotate, removing fluffs by coming in contact with a front surface of the fabric to be printed by the print head; a crease smoothening roller smoothening the fabric in a width direction of the fabric by coming in contact with the rear surface of the fabric; and a pair of supporting plate supporting both ends of the crease smoothening roller, both ends of the guide roller, and both ends of the fluff removing roller. The purpose of the present invention is to provide the digital textile printer capable of removing fluffs of the fabric supplied to the print head.

Description

[0001] The present invention relates to a digital textile printer having a fluff removing device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital textile printer, and more particularly, to a digital textile printer having a lint removing device capable of printing by removing fluff of a fabric to be printed.

Digital textile printers can print (print) various contents such as letters and pictures on fabrics such as cotton, silk, polyester, etc. instead of paper, and they can be used for advertising banners, signboards, fabrics used for interior decoration, Widely used.

When printing a fabric using such a digital textile printer, an image is printed by using a dye ink and a pigment ink as water-based inks on a fabric with a coating layer formed thereon. The fabric before the printing is usually subjected to pretreatment, The finished product is obtained through a pretreatment process in which the coating liquid medicine is applied and a washed and washed post-treatment process for removing the coating liquid from the printed fabric.

As the transfer method of the fabric, there is a direct transfer method in which the printed fabric is transferred directly to the transfer object without taking the thermal process, thermal sublimation process or physical method.

For example, digital textile printers have been widely used in the field of textile printing and have been used in a thermal sublimation system. In the method of computerizing the work process from design to final output, The work is done through the copy of the thermal sublimation method. In a digital textile printer, a thermal sublimation method firstly prints through a head according to a given set of image data on a computer, applies natural drying or hot air to the fabric, and thermally sublimates the ink from the printed image to make the image sharper and more pronounced It is used as a printing technique.

An example of such a conventional digital textile printer is shown in FIG.

As shown in FIG. 1, the digital textile printer 100 according to the related art includes a far-end feeding unit 130 for feeding a raw material T before printing. Such a far-end feeding unit 130 has a length corresponding to the width of the fabric T, and loosens and feeds the fabric T before printing.

The supplied fabric T is fed along the movement path provided in the printer body 110 and wound around the winding unit 140. [ The print head 120 provided at the upper end of the printer body 110 prints an image on the cloth T moving along the movement path. The printer body 110 may be provided with a preheater 112, a platen heater 111 and an after heater 113 for drying the ink formed by heating the fabric T to form an image.

However, there is a problem in that clean printing is difficult due to the occurrence of napping, brushed or the like on the printing surface of the fabric T supplied from the far-end feeding unit 130 to the print head 120,

Therefore, development of a digital textile printer capable of removing lint and brushed of the fabric supplied to the printhead is required.

[Related Prior Art Literature]

Korean Patent No. 10-1272056

Korean Patent No. 10-0538921

Korean Patent No. 10-0456813

Korean Patent No. 10-1114311

SUMMARY OF THE INVENTION It is an object of the present invention to provide a digital textile printer capable of eliminating fluff and bristles of a fabric supplied to a print head.

According to an aspect of the present invention,

A fabric feeding unit for feeding the fabric;

A printing head for printing on the fabric;

A lint removing device installed between the far-end supply unit and the print head, for removing the lint of the fabric supplied from the far-end supply unit; And

And a winding unit that rewinds the fabric having been printed by the print head,

A guide roller installed on the upper side of the far end feeding unit and guiding and guiding the rear end of the far end supplied from the far end feeding unit;

A lint removing roller which is rotatably installed on the guide roller and contacts the front surface of the fabric to be printed by the print head to remove the lint;

A curled-up roller installed to be rotatable above the nappy removing roller and contacting the rear surface of the fabric to spread the fabric in a width direction of the fabric; And

And a pair of support plates for supporting both the guide roller, the nap roller, and both ends of the curled-up roller.

At this time, the nap roller may be formed of rubber, and the surface may be coated with wax.

In addition, a pair of spiral projections symmetrical with respect to the center are formed on the surface of the bending and pressing roller, and the pair of spiral projections are formed in such a form that the bending and pressing roller moves toward both ends from the center when the bending and pressing roller rotates in one direction .

In addition, a drive device capable of rotating the bending and pressing roller may be installed on one of the pair of support plates.

Further, both ends of the nap roller are supported by a pair of support brackets, and each of the pair of support brackets may include a support groove formed to detach the nap roller.

According to the digital textile printer having the lint removing device according to an embodiment of the present invention, since the napping of the fabric can be removed and the fabric can be fed to the print head in a state where the curvature of the fabric is uneven, A clean image is formed by the print head.

1 schematically illustrates a digital textile printer according to the prior art;
2 is a perspective view of a digital textile printer having a lint removing device according to an embodiment of the present invention;
3 is a view for explaining a state in which a cloth is fed in a digital textile printer having a lint removing device according to an embodiment of the present invention;
4 is a view for explaining the operation of a curved and unfolding roller for curving a fabric in a digital textile printer having a lint removing device according to an embodiment of the present invention;
5 is a view showing a supporting bracket of a digital textile printer having a lint removing device according to an embodiment of the present invention.

Hereinafter, embodiments of a digital textile printer having a lint removing device according to the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the embodiments described below are provided for illustrative purposes only, and that the present invention may be embodied with various modifications and alterations of the embodiments described herein. In the following description, well-known functions or components are not described in detail to avoid obscuring the subject matter of the present invention. In addition, the attached drawings are not drawn to scale in order to facilitate understanding of the invention, but the dimensions of some of the components may be exaggerated.

2 is a perspective view of a digital textile printer having a lint removing device according to an embodiment of the present invention. FIG. 3 is a view for explaining a state in which a cloth is fed in a digital textile printer having a lint removing device according to an embodiment of the present invention. FIG. 4 is a cross- Fig. 3 is a view for explaining the operation of the curved-stretching roller for stretching the curvature of the fabric in the digital textile printer.

2 to 4, a digital textile printer 1 having a lint removing device according to an embodiment of the present invention includes a printer body 10, a print head 20, a far end feeding unit 30, A unit 40, and a lint removing device 50. [

The printer main body 10 supports a fabric T to be printed and forms a conveying path of the fabric T. [ A platen heater 11 may be provided on the upper surface of the printer body 10 to support the fabric T to be printed and to heat the fabric T to a predetermined temperature. A preheater 12 for preheating the fabric T is provided in front of the platen heater 11 in the conveyance direction (arrow direction) of the fabric T, and the back side of the platen heater 11 is provided with an image An after-heater 13 for heating and drying the fabric T may be provided. Other configurations of the printer main body 10 are the same as or similar to those of the printer main body of the digital textile printer according to the related art, and therefore, detailed description thereof will be omitted.

The print head 20 is installed to face the platen heater 11 on the upper side of the printer main body 10 and forms a certain image on the tail T. [ The printhead 20 is controlled by a computer and forms a desired image on the fabric passing between the platen heater 11 and the printhead 20 of the printer body 10. [

The far-end feeding unit 30 is formed so as to be able to feed the fabric T to be printed to the print head 20 side. Specifically, it is formed so as to be rotatable by mounting a fabric T wound in a roll form, that is, a roll fabric. Therefore, when the digital textile printer 1 starts printing, the tail T is unwound from the roll fabric mounted on the far-end feed unit 30 and supplied to the print head 20 side.

The winding unit 40 is formed so as to be capable of winding a fabric T supplied from the far-end feeding unit 30 and passing through the print head 20 and having a predetermined image formed thereon. The winding unit 40 is provided so as to be rotatable by mounting a winding roller that can wind the fabric T on which printing has been completed. Although not shown, a tension adjusting device capable of applying a predetermined tension to the fabric T being conveyed may be installed at one side of the winding unit 40. [

The lint removing device 50 is configured to remove fluff, brushed or the like from the surface of the fabric T supplied from the fabric feed unit 30. [ The lint removing device 50 provided in the digital textile printer 1 according to the embodiment of the present invention includes a guide roller 90, a lint removing roller 80, a curving and stretching roller 70, (60).

Both the guide roller 90, the nap roller 70 and the nip roller 70 are supported at their opposite ends by a pair of support plates 60.

The guide roller 90 is provided on the upper side of the far-end feed unit 30 and contacts the rear surface of the tail T supplied from the far-end feed unit 30 to guide it to the fuzz removing roller 80. The guide roller 90 may be formed of a cylindrical roller fixed to the pair of support plates 60. [ Alternatively, the guide roller 90 may be installed so that both ends of the guide roller 90 are rotatably supported on the pair of support plates 60.

The nap roller removing roller 80 is rotatably installed on the upper side of the guide roller 70 and is formed so as to remove fluff or bristles from the fabric T to be printed by the print head 20. [ Specifically, the lint removing roller 80 is formed so as to be in contact with the front surface of the fabric T conveyed from the guide roller 70 to remove fluff or brushed.

For this purpose, the nap roller 80 is formed of a cylindrical rubber, and the surface thereof may be coated with wax. The lint removing roller 80 is provided at its center with a rigid rotating shaft 81. That is, the nappy removing roller 80 is provided with a hollow cylindrical rubber roller 83 around the rotating shaft 81, and the surface of the rubber roller 83 is coated with wax. Bearings 82 are provided at both ends of the rotating shaft 81. The fluff or bristles are removed from the front surface of the fabric T when the fabric T moving in the guide roller 70 is in contact with the fluff removing roller 80 at a constant pressure.

Both ends of the rotating shaft 81 of the nap-off roller 80 are supported by a pair of support brackets 85. 5 shows a support bracket 85 of a digital textile printer 1 equipped with a lint removing device according to an embodiment of the present invention.

Referring to FIG. 5, each of the support brackets 85 is formed with a support groove 86 into which the rotation shaft 81 of the nap roller 80 can be received. The support groove 86 is composed of an opening 87 and a receiving portion 88 formed in parallel with the ground surface at the opening 87. The opening 87 and the receiving portion 88 are formed at approximately 90 degrees, and the opening 87 and the receiving portion 88 communicate with each other through a soft passage. Therefore, when the bearing 82 of the rotary shaft 81 of the nappy removing roller 80 is inserted into the opening 87 of the support groove 86, the bearing 82 moves along the passage to be accommodated in the accommodating portion 88 .

As the fabric T passes the guide roller 90, the bobbin removing roller 80 and the bending roller 70, the bearing 82 of the bobbin removing roller 80 is located in the receiving portion 88 Thereby supporting the bobbin removing roller 80 to rotate. The support bracket 85 can be fixed to the support plate 60 by a fixing member 89 such as a bolt or a screw. In the case of this embodiment, the support bracket 85 is fixed to the support plate 60 by four fixing members 89.

The curling and stretching roller 70 is rotatably provided on the upper side of the nap roller 70 and is provided to be in contact with the rear surface of the fabric T. [ A pair of spiral projections 71 and 72 are formed on the surface of the bending and pressing roller 70. The pair of spiral projections 71 and 72 are formed to have a line symmetry with respect to the longitudinal center line 70a of the bending and pressing roller 70. [ At this time, the spiral direction of the pair of spiral projections 71 and 72 is such that when the bending and pressing roller 70 rotates in the direction of conveyance of the tail T, a pair of spiral projections 71 and 72 are formed on the bending and pressing roller 70 to both ends thereof. Therefore, when the bending roller 70 rotates in the moving direction of the tail T, the pair of spiral projections 71 and 72 move toward both ends from the center.

4, when the bending and pressing roller 70 is rotated in the conveying direction of the original T in the direction of the arrow A in FIG. 4, the spiral protrusion 71 formed on the left side of the bending and pressing roller 70, Is moved to the left from the center 70a of the bending and pressing roller 70. [ Further, the spiral protrusion 72 formed on the right side of the bending and pressing roller 70 is moved to the right from the center 70a of the bending and pressing roller 70. The fabric T passing through the upper side of the bending and pressing roller 70 is guided by a pair of spiral protrusions 71 and 72 formed on the right and left sides of the bending and stretching roller 70 to the left and right sides of the bending and pressing roller 70 So that the curvature and the folding of the fabric T in the width direction are all unfolded. Thus, the fabric T is fed to the lower side of the print head 20 in a flat state with the fluff and brushed removed.

A rotary shaft 73 is provided at both ends of the bending and pressing roller 70 and a rotary shaft 73 at one end of the bending and pressing roller 70 is connected to a driving device 75 for rotating the bending and pressing roller 70, Respectively. The rotary shaft 73 at the other end of the bending and pressing roller 70 is supported by a support bearing 74 provided on the support plate 60. The drive unit 75 is installed on one of the pair of support plates 60. [

The drive device 75 includes a motor 76 and a speed reducer 77. [ The motor 76 generates a driving force capable of rotating the bending roller 70. The output shaft of the speed reducer 77 is connected to the rotation shaft 73 of the bending and stretching roller 70 and the input shaft of the speed reducer 77 is connected to the output shaft of the braking / And is connected to the shaft of the motor 76. Therefore, when the shaft of the motor 76 rotates, power is transmitted to the input shaft of the speed reducer 77 and the output shaft rotates. When the output shaft of the speed reducer 77 rotates, the bending and pressing roller 70 connected to the output shaft of the speed reducer 77 rotates. The rotation of the motor 76 can be controlled by a motor controller 78 installed on one side of the printer body 10. [ Accordingly, the user can turn on / off the rotation of the bending and pressing roller 70 as needed.

The guide roller 90, the nap roller 70 and the curving and stretching roller 70 are sequentially arranged in the vertical direction and the original T is guided by the guide roller 90, the nap roller 70, The napkin removing roller 80 is designed to be eccentric with the guide roller 90 and the bending roller 70 so that the tail T can press the baffle removing roller 80 at a constant pressure when passing the roller 70. [ Respectively. The rotation shaft 81 of the nap roller 80 is installed closer to the print head 20 than the center axis of the guide roller 90 and the rotation axis 73 of the curved spreading roller 70. In this embodiment,

The pair of support plates 60 are provided on both legs 10a of the printer body 10 so as to support both ends of the guide roller 90, the nap roller 70 and the nap roller 70 described above Respectively. Therefore, the pair of support plates 60 are provided so as to face each other, and a plurality of support rods 61 are provided between the pair of support plates 60.

Hereinafter, the operation of the digital textile printer 1 having the above-described structure with the lint removing device according to the embodiment of the present invention will be described in detail with reference to FIG.

For printing, the roll fabric is mounted on the far-end feed unit 30. Thereafter, the fabric T is released from the roll fabric, and the fabric is then passed through the guide roller 90, the nap roller 70, and the curling roller 70 in order. At this time, the rear surface of the fabric T is brought into contact with the guide roller 90, the front surface of the fabric T is brought into contact with the nap roller 70, and the rear surface of the fabric T is conveyed to the curled- Fit the fabric to make contact. The fabric T passing through the bending and pressing roller 70 passes under the print head 20 and is fixed to the winding roller 40. [

Then, when printing is performed, an image is formed on the front surface of the fabric T by the print head 20 while the fabric T is moving. At this time, the front surface of the fabric T moving to the print head 20 is in contact with the nap roller removing roller 80, so that fluff or bristles on the front surface of the fabric T are removed.

Further, the rear surface of the fabric T passing through the nap-off roller 80 moves while contacting the curled-up roller 70. Since the bending and pressing roller 70 includes the pair of spiral protrusions 71 and 72 that are moved toward the both ends from the center 70a by the drive unit 75, (T) is flattened without curvature. Therefore, since the cloth T supplied to the lower side of the print head 20 is in a flat state with the fluff removed, a clean image is formed on the cloth by the print head 20.

As described above, according to the digital textile printer 1 equipped with the lint removing device according to the embodiment of the present invention, the fabric T supplied to the print head 20 is a flat state in which fluffs are removed, So that a clear image can be obtained.

The invention has been described above in an illustrative manner. The terms used herein are for the purpose of description and should not be construed as limiting. Various modifications and variations of the present invention are possible in light of the above teachings. Therefore, unless otherwise indicated, the present invention may be practiced freely within the scope of the claims.

One; Digital textile printer with lint remover
10; Printer main body 11; Platen heater
12; Preheater 13; After-heater
20; A print head 30; Fabric feeding unit
40; A winding unit 50; Lint remover
60; A support plate 70; Bending rollers
71,72; Spiral projection 73; Rotating shaft
74; Support bearing 75; Driving device
76; Motor 77; reducer
78; A control device 80; Lint removal roller
81; A rotary shaft 82; bearing
85; Support bracket 86; Support groove
87; Opening 88; Receiving portion
89; A fixing member 90; Guide roller

Claims (5)

A fabric feeding unit for feeding the fabric;
A printing head for printing on the fabric;
A lint removing device installed between the far-end supply unit and the print head, for removing the lint of the fabric supplied from the far-end supply unit; And
And a winding unit that rewinds the fabric having been printed by the print head,
A guide roller installed on the upper side of the far end feeding unit and guiding and guiding the rear end of the far end supplied from the far end feeding unit;
A lint removing roller which is rotatably installed on the guide roller and contacts the front surface of the fabric to be printed by the print head to remove the lint;
A curled-up roller installed to be rotatable above the nappy removing roller and contacting the rear surface of the fabric to spread the fabric in a width direction of the fabric; And
And a pair of support plates for supporting both ends of the guide roller, the nap roller, and the curled-up roller,
Wherein the nap roller is formed of rubber and the surface is coated with wax,
Wherein a pair of helical projections symmetrical with respect to the center are formed on the surface of the curved and unfolding roller, and the pair of helical projections are formed so as to move toward both ends from the center when the curved and unfolding roller rotates in one direction,
A driving device for rotating the curled-up roller is provided on one of the pair of supporting plates,
The output shaft of the speed reducer is connected to the rotation shaft of the bending and pressing roller, and the input shaft of the speed reducer is connected to the output shaft of the motor. The motor includes a motor and a speed reducer. The speed reducer reduces the number of revolutions of the motor, When the shaft of the motor rotates, power is transmitted to the input shaft of the speed reducer so that the output shaft rotates. When the output shaft of the speed reducer rotates, the curved expanding roller connected to the output shaft of the speed reducer rotates, Is controlled by a motor controller installed on one side of the main body of the printer so that the user can turn on / off the rotation of the bending and pressing roller as needed,
Wherein both ends of the nap roller are supported by a pair of support brackets and each of the pair of support brackets includes a support groove formed so as to be capable of attaching and detaching the nap roller,
Wherein the rotation shaft of the nap roller is disposed closer to the print head than a center axis of the guide roller and a rotation axis of the curved spreading roller so that the napping roller is eccentrically disposed between the guide roller and the curved spreading roller, And the napkin removing roller can be pressed.
A digital textile printer having a lint removal device.
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