KR101484592B1 - Digital printing machine - Google Patents

Abstract

The present invention relates to a digital printing machine, and more particularly, to a digital printing machine having a main body, a supply roller which is rotated by being connected to both sides of the main body so as to supply a printing paper, and a printing paper contacting both sides of the main body, And a take-up portion for keeping the take-up bar horizontal while keeping the take-up bars at different intervals from the feed rollers.
Unlike the prior art, unlike the prior art, it is possible to provide a tension to a printing paper fed for printing while reducing a curved portion to enable smooth feeding, and to prevent bowing of the feeding roller or adjustment of inclination, thereby preventing feeding of the printing paper.

Description

Digital printing machine {DIGITAL PRINTING MACHINE}

The present invention relates to a digital printing machine, and more particularly, to a digital printing machine capable of smoothly feeding a printing paper fed by printing while reducing a curved portion thereof while preventing warping of the feeding roller, To a digital printing machine.

In general, a digital printing machine digitizes a desired output signal in a digital controller and then adds a magenta (M), yellow (Y), cyan (C), and black Is a state-of-the-art printing apparatus that supplies ink to the user to draw a desired pattern by superimposing color on the printing paper.

A thermal transfer machine for transferring and transferring various patterns such as letters, symbols and figures onto the surface of a print paper such as a fabric or paper using a transfer paper is provided with a drum heater, a deceleration motor, a flat belt, a plurality of feeding rollers, . The drum heater is equipped with a heater and a temperature sensor inside, and the heat of the heater heated to a proper temperature is transferred to the surface. When heat is applied to the transfer sheet while rotating around the axis of the inner center, the pattern of the transfer sheet is transferred to the printing sheet. The deceleration motor rotates the drum heater by connecting the chain to the shaft of the drum heater. The plurality of feeding rollers and the driven rollers are installed parallel to each other around the drum heater so as to have a somewhat height difference from the upper and lower portions of the drum heater. The flat belt is provided in a zigzag shape on the outer surfaces of the plurality of feeding rollers and driven rollers. The predetermined area is engaged with a predetermined area of the drum heater by the rotation of the feeding roller and the driven roller, and the remaining predetermined area runs in a planar manner.

The tension adjusting device of the printing apparatus is proposed in Korean Patent No. 10-1185494 (entitled Tension Control Apparatus).

Conventional digital printing machines use a lever principle to apply tension to a supplied printing paper. As the printing paper is shifted in the opposite direction with the length of the lever being shifted and transported, excessive force is applied to the printing paper, There is a problem that it is not smoothly performed.

In addition, conventional digital printing machines have a drawback in that printing defects are caused when a roll type printing paper is supplied at a slow speed.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a printing press capable of providing a tension to a printing paper fed for printing by arranging a feeding roller and a take- And to provide a digital printing machine for enabling a smooth supply.

It is another object of the present invention to provide a digital printing machine which prevents the feeding of the printing paper by preventing the feeding roller from being warped or by simply adjusting the inclination.

In addition, the present invention improves the drying speed by simultaneously drying the printing paper fed after being printed by the heating member and the blowing fan, and by digitally printing to reduce the power consumption by partially activating the heating member and the blowing fan according to the width of the printing paper, The purpose is to provide a machine.

A digital printing machine according to the present invention includes: a main body; a supply roller which is connected to both sides of the main body so as to be rotated to supply a printing paper; And a take-up part for keeping the take-up bar horizontal while keeping the take-up bars apart from the feed roller.

The take-up unit includes: a center shaft provided on both sides of the take-up bar so as to protrude from both sides of the take-up bar; a housing provided on both sides of the body to form a cutout groove for inserting the corresponding center shaft; And a pinion gear portion formed on each of the central shafts and guiding the take-up bar so as to be able to ascend and descend while keeping the take-up bar horizontally on the feed roller.

The tension of the printing sheet passing between the feeding roller and the take-up bar can be maintained by the pre-roll bar placed on the upper side.

Preferably, the main body rotatably includes a feed roller for feeding and guiding the roll type print paper, and the feed roller is prevented from being warped by the support part.

Wherein the support portion includes a clamping member coupled to the body corresponding to a lower side of the paper feed roller, a bracket extending from the clamping member, a first inclined surface formed on the upper side of the bracket, And a second inclined surface inclined symmetrically with respect to the first inclined surface is formed on the lower side and a concave groove is formed on the upper side to receive the paper feeding roller, And a screw inserted in the slot hole to adjust the height of the upper block according to the rotation direction and the amount of rotation in a state where the screw is fastened to the hole.

The main body includes a heating module for drying the printing paper to be discharged,

The heating module may include a case having both sides connected to the main body, a plurality of heating members provided inside the case to radiate heat in the direction of the printing paper, and a plurality of heating members provided inside the case, And a plurality of blowing fans for blowing air to concentrate on the printing paper.

As described above, in the digital printing machine according to the present invention, the feed rollers and the take-up rolls are arranged side-by-side in the upper and lower positions unlike the prior art, and the printing paper is passed therebetween, thereby giving tension to the printing paper fed for printing It is possible to supply smooth supply by reducing inflection part.

Further, the present invention can prevent the feeding of the printing paper from the meander by preventing the paper feeding roller from being warped or simply adjusting the inclination.

In addition, the present invention improves the drying speed by simultaneously drying the printing paper after being printed with the heating member and the blowing fan, and can reduce power consumption by partially activating the heating member and the blowing fan according to the width of the printing paper.

1 is a perspective view of a digital printing machine according to an embodiment of the present invention.
2 is an enlarged perspective view of a take-up bar and a take-up part of a digital printing machine according to an embodiment of the present invention.
3 is an exploded perspective view of a take-up part of a digital printing machine according to an embodiment of the present invention.
4 is an enlarged perspective view of a paper feed roller and a support portion of a digital printing machine according to an embodiment of the present invention.
5 is an exploded perspective view of a support part of a digital printing machine according to an embodiment of the present invention.
6 is a cross-sectional view of a support unit according to an embodiment of the present invention.
7 is a rear perspective view of a digital printing machine according to an embodiment of the present invention.
8 is an enlarged perspective view illustrating a tilt adjustment state of a heating module of a digital printing machine according to an exemplary embodiment of the present invention.

Hereinafter, an embodiment of a digital printing machine according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention or custom of the operator, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a perspective view of a digital printing machine according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a take-up bar and a take-up part of a digital printing machine according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of a take-up part of a digital printing machine according to an embodiment of the present invention.

FIG. 4 is an enlarged perspective view of a feeding roller and a support unit of a digital printing machine according to an exemplary embodiment of the present invention, FIG. 5 is an exploded perspective view of a support unit of a digital printing machine according to an exemplary embodiment of the present invention, Sectional view of a support portion according to an embodiment of the present invention.

FIG. 7 is a rear perspective view of a digital printing machine according to an embodiment of the present invention, and FIG. 8 is an enlarged perspective view illustrating a tilt adjustment state of a heating module of a digital printing machine according to an embodiment of the present invention.

As shown in FIG. 1, the digital printing machine according to the embodiment of the present invention is formed by the main body 10.

The main body 10 has a supply roller 20, a take-up bar 30, a take-up part 40, and the like.

In particular, the main body 10 can be deformed into various shapes.

On the other hand, the main body 10 is provided with a feeding roller 20. The supply roller 20 is rotatably connected to the body 10 to which both sides are associated. The feed roller 20 serves to supply the printing paper 2 while being forcedly rotated.

At this time, it is preferable that the printing paper 2 is tensioned during transportation by friction with the feeding roller 20 which is in contact with the upper circumferential surface of the feeding roller 20 forcibly rotated.

Thus, the take-up bar 30 is provided. The take-up bar 30 is connected to the main body 10 on both sides so as to be positioned on the upper side of the feed roller 20. [

2 and 3, the take-up bar 30 serves to stretch the printing paper 2 in contact with the upper circumferential surface of the feeding roller 20 and to impart tension thereto.

In particular, the take-up bar 30 should abut the upper surface of the printing paper 2 at a position right above the feeding roller 20 in order to apply tension to the printing paper 2. [ Thus, the supply roller 20 and the take-up bar 30 are spaced apart by the thickness of the printing paper 2. [ That is, the feed roller 20 and the take-up bar 30 are circumscribed with a gap of the thickness of the printing paper 2.

The thickness of the printing paper 2 varies depending on the type. When the print paper 2 is first fed between the feed roller 20 and the take-up bar 30, the take-up bar 30 must be spaced further apart from the feed roller 20.

Thus, the take-up unit 40 is provided. The take-up unit 40 serves to keep the take-up bar 30 in a horizontal position while making the take-up bar 30 different in spacing from the feed roller 20.

The take-up portion 40 includes a center shaft 42, a housing 44, a rack gear portion 46, and a pinion gear portion 48.

The center shaft 42 protrudes on both sides of the take-up bar 30. In particular, the center shaft 42 is provided on the center line of the take- At this time, the center shaft 42 may be provided on both sides of the take-up bar 30, or may be inserted into the take-up bar 30 to be axially projected. In addition, the center shaft 42 is rotatably provided with respect to the take-up bar 30.

Also, the housing 44 is provided on both sides of the main body 10. Of course, the housing 44 can be fixedly mounted to the main body 10 by various methods.

Then, the housing 44 forms a cutout groove 45 for inserting the corresponding center shaft 42. [ The corresponding center shaft 42 is inserted into the housing 44 through the cutout groove 45 in a state where the housing 44 is installed inside the body 10. [

In addition, the rack gear portion 46 is provided inside the housing 44. At this time, the rack gear portion 46 may be integrally formed with the housing 44 or may be detachably provided to the housing 44. [

The pinion gear portion 48 is formed on each of the center shafts 42 and is reciprocated along the rack gear portion 46 so that the take-up rod 30 can be raised and lowered while keeping the feed roller 20 horizontal It serves as a guide.

That is, the pinion gear portion 48 is rotated up and down along the rack gear portion 46, so that the take-up bar 30 becomes adjustable in spacing with respect to the feed roller 20.

At this time, the take-up bar 30 is picked up by the user or naturally raised or lowered by the thickness of the printing paper 2. [

On the other hand, it is preferable that the printing paper 2 passing between the feeding roller 20 and the take-up bar 30 is fed to the lower side of the print head 16 while maintaining the tension.

Accordingly, it is preferable that the tension of the printing paper 2 passing between the feeding roller 20 and the take-up bar 30 is maintained by the pre-roll bar 50. [ The free roll bar 50 is simply placed on the upper side of the printing paper 2 passing between the feeding roller 20 and the take-up bar 30. At this time, the length and thickness of the pre-roll bar 50 are not limited.

On the other hand, the main body 10 rotatably includes a paper feed roller 60 for feeding paper-fed printing paper 2.

In particular, the width of the printing paper 2 perpendicular to the conveyance direction can be variously used.

Therefore, the paper feed roller 60 is provided as long as possible within the width of the main body 10. Accordingly, the feeding roller 60 may be bent downward.

Accordingly, the paper feed roller 60 is provided so as to be prevented from being warped by the support portion 70.

4 to 6, the support portion 70 includes the clamping member 71, the bracket 72, the lower block 73, the upper block 76, and the screw 79. [

The clamping member 71 is fixedly coupled to the main body 10 so as to be positioned below the sheet feeding roller 60. At this time, at least one clamping member 71 is provided, and the position where the clamping member 71 is coupled to the main body 10 along the axial direction of the feeding roller 60 can be adjusted.

The clamping member 71 is fixedly mounted to the main body 10 in various ways.

Then, the bracket 72 extends from the clamping member 71. At this time, it is preferable that the bracket 72 is provided integrally with the clamping member 71. Of course, the bracket 72 can be deformed into various shapes.

In addition, the lower block 73 is provided on the upper side of the bracket 72. The lower block 73 may be integrally formed with the bracket 72 or may be detachably provided and positioned directly below the paper feed roller 60.

The lower block 73 forms a first inclined surface 74 on the upper side and penetrates the slot hole 75 in the direction of the first inclined surface 74 from the side. The slot hole 75 is formed to be long in the vertical direction same as the direction of movement of the take-up bar 30.

The upper block 76 is provided with a second inclined surface 77 that is inclined symmetrically while being in contact with the first inclined surface 74 and a concave groove 77a is formed on the upper side to receive the paper feed roller 60 .

The upper block 76 penetrates the hole 78 corresponding to the slot hole 75.

That is, the height of the entire upper block 76 and the lower block 73 can be varied by moving the second inclined surface 77 along the first inclined surface 74.

The screw (79) is inserted into the slot hole (75) and fastened to the hole (78). Thus, the screw 79 adjusts the height of the upper block 76 by varying the rotational direction and the amount of rotation. At this time, the 'height of the upper block 76' means the height of the entire upper block 76 and the lower block 73.

Particularly, as the position of the upper block 76 relative to the lower block 73 is changed, the fixed lower block 73 forms the slot hole 75.

On the other hand, it is preferable that the printing paper 2 fed after printing is dried in a short time.

Thus, the main body 10 has the heating module 80 for drying the printing paper 2 to be discharged.

7 and 8, the heating module 80 includes a case 82, a heating member 84, and a blowing fan 86.

Both sides of the case 82 are connected to the main body 10.

The heating member 84 is disposed inside the case 82 to dissipate heat in the direction of the printing paper 2 to dry the ink liquid adhering to the printing paper 2. [

In particular, a plurality of heating members 84 are provided and arranged in a plurality of rows. The heating member 84 is divided along the axial direction of the sheet feeding roller 60 in units of a set number.

The heating member 84 may be variously applied to a heating rod, a heating coil, or the like.

The blowing fan 86 is provided inside the case 82 to blow air so as to concentrate the heat emitted from the heating member 84 on the printing paper 2. [ That is, as the blowing fan 86 is operated, the heat of the heating member 84 is concentrated on the printing paper 2. [

In addition, a plurality of blowing fans 86 are provided and are divided in units of the set number along the axial direction of the feeding roller 60.

On the other hand, each of the heating members 84 or groups of heating members 84 to be partitioned is individually controlled by the control unit 88.

Further, each of the blowing fans 86 or the group of blowing fans 86 to be partitioned is individually controlled by the control unit 88. [

This is to reduce the power consumption by operating only the heating member 84 and the blowing fan 86 as much as necessary according to the width of the printing paper 2 to be fed.

Further, it is preferable that the heating module 80 is slanted.

Thus, the main body 10 has the bracket 92 having a plurality of positioning holes 91 formed therethrough.

An upper side of the case 82 is hinged to the main body 10, and a positioning portion 94 is provided on the lower side. Therefore, the case 82 becomes reciprocally rotatable along the arc locus with reference to the upper side.

The position setting portion 94 includes a housing 95, an elastic member 97, and a rib 98.

The housing 95 is provided on both side edges of the case 82. At this time, the brackets 92 are provided on the main body 10 in correspondence with the respective housings 95.

The housing 95 has a circular opening hole 96 formed along the axial direction on the circumferential surface thereof.

The elastic member 97 is accommodated in the housing 95. The elastic member 97 is preferably a coil spring.

The rib 98 is partially inserted into the housing 95 to be resiliently supported by the elastic member 97 and inserted into the arbitrary positioning hole 91 to keep the inclination of the case 82 in the set state It plays a role.

In particular, the rib 98 has a handle 99 that protrudes into the opening hole 96. The knob 99 can be reciprocated within the range of the opening hole 96 only.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: Main body 20: Feed roller
30: Take-up bar 40: Take-
42: center shaft 44: housing
46: rack gear portion 48: pinion gear portion
50: free roll bar 60: feeding roller
70: Support part 71: Clamping member
72: Bracket 73: Lower block
76: upper block 79: screw
80: Heating module 82: Case
84: Heating member 86: Ventilation fan
88:

Claims (6)

main body; A supply roller connected to both sides of the main body to rotate and supply a printing paper; A take-up bar which is connected to both sides of the main body so as to be positioned on the upper side of the feed roller so as to stretch the print paper in contact with the feed roller to impart tension thereto; And a take-up unit for keeping the take-up bar horizontal while keeping the take-up bar at a distance from the feed roller in accordance with the thickness of the print paper,
The take-up unit includes: a center shaft protruding from both sides of the take-up bar;
A housing provided on both sides of the main body and defining a cutout groove for inserting the corresponding central axis;
A rack gear portion provided inside the housing; And
And a pinion gear portion formed on each of the central shafts and guiding the take-up bar so as to be able to move up and down along the rack gear portion while keeping the take-up rod horizontal to the feed roller.
delete The method according to claim 1,
Wherein the tension of the printing paper passed between the feeding roller and the take-up bar is maintained by the preroll bar placed on the upper side.
The method according to claim 1,
Wherein the main body rotatably includes a feed roller for feeding the sheet of the roll type,
Wherein the feeding roller is prevented from being warped by the support portion.
5. The apparatus according to claim 4,
A clamping member coupled to the body corresponding to a lower side of the paper feed roller;
A bracket extending from the clamping member;
A lower block provided on the upper side of the bracket and having a first inclined surface on an upper side and a slot hole in a direction of the first inclined surface from the side;
An upper block having a second inclined surface inclined symmetrically to the first inclined surface and inclined downwardly, a concave groove formed on the upper side to receive the paper feed roller, and a hole corresponding to the slot hole; And
And a screw inserted in the slot hole to adjust a height of the upper block according to a rotation direction and an amount of rotation in a state of being fastened to the hole.
The method according to claim 1,
The main body includes a heating module for drying the printing paper to be discharged,
The heating module includes: a case having both sides connected to the main body;
A plurality of heating members provided inside the case and radiating heat in the direction of the printing paper; And
And a plurality of blowing fans provided inside the case and blowing air to concentrate the heat emitted from the heating member to the printing paper.

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