KR101800879B1 - Printing sheet transfer device of digital printing machine - Google Patents

Printing sheet transfer device of digital printing machine Download PDF

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Publication number
KR101800879B1
KR101800879B1 KR1020150155404A KR20150155404A KR101800879B1 KR 101800879 B1 KR101800879 B1 KR 101800879B1 KR 1020150155404 A KR1020150155404 A KR 1020150155404A KR 20150155404 A KR20150155404 A KR 20150155404A KR 101800879 B1 KR101800879 B1 KR 101800879B1
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South Korea
Prior art keywords
printing paper
tension
paper
main body
roller
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Application number
KR1020150155404A
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Korean (ko)
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KR20170053083A (en
Inventor
최동호
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(주)디지아이
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Priority to KR1020150155404A priority Critical patent/KR101800879B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/16—Means for tensioning or winding the web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0005—Curl smoothing, i.e. smoothing down corrugated printing material, e.g. by pressing means acting on wrinkled printing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/16—Means for tensioning or winding the web
    • B41J15/165—Means for tensioning or winding the web for tensioning continuous copy material by use of redirecting rollers or redirecting nonrevolving guides

Abstract

The present invention relates to a conveying apparatus for a printing paper for a digital printing machine, which comprises a conveying drum rotatably provided on a printing paper feeding side and a paper discharging side of a main body and conveying the printing paper, a conveying drum located on a feeding side of the printing paper, A tension holding portion for holding the tension of the printing paper corresponding to the side of the conveying drum located on the side opposite to the conveying drum connected to the driving motor, And a control unit for controlling the operation of the drive motor and the tension holding unit to adjust the tension of the tension member.
The tension of the printing paper can be controlled at the printing paper feeding side and the paper discharging side of the main body by connecting the motors to the drums on both sides of the main body and controlling the motors according to the control of the control unit.

Figure R1020150155404

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a printing apparatus for a digital printing machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transfer apparatus for a printing paper for a digital printing machine, and more particularly, to a printing paper transfer apparatus for a digital printing machine, The present invention relates to a conveying device for a printing paper for a digital printing machine capable of adjusting the tension of a printing paper on each side of the printing paper.

In general, a digital printing machine is a device that maximizes the precision and clarity of a drawing by outputting the data generated by a computer to a printing paper. In particular, an ink-jet digital printing machine is an apparatus that outputs data stored on the printing paper .

The digital printing machine includes a power unit for generating and transmitting necessary power, a platen roller for receiving power by the power unit, a timing belt for interconnecting the power of the power unit to the platen roller, A pair of guide bars arranged in parallel with the platen roller at a distance from the platen roller at the upper portion of the platen roller, a press-in roller provided in the guide bar in close cooperation with the platen roller, A head for outputting to a printing paper, an ink container for supplying ink to the head, and the like.

In particular, in the case of a large-size printed material, the printing paper is wound in a predetermined length and is mounted on the paper feeding roller, And the like.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Regarding alignment transfer of printing paper, it has been proposed in Korean Patent Registration No. 10-0340992 (entitled "Linear Alignment Correction Device of Media for Digital Printing Machine").

In the conventional digital printing machine, a transfer drum is disposed on one side and the other side of a main body to transfer a print sheet. As only the transfer drum located on the discharge side of the print sheet is forced to rotate to transfer the print sheet, the tension of the print sheet is kept constant There is a problem that a printing failure occurs.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the problems as described above, and it is an object of the present invention to provide a printing apparatus and a printing apparatus in which the motors are connected to the drums on both sides of the main body, And an object of the present invention is to provide a feeding device for a printing paper for a digital printing machine for controlling the tension of paper.

The present invention also provides a motor for the discharge rollers and the feed rollers to control the rotation of the discharge rollers and the feed rollers through the control of the control unit so that the print paper is transported while maintaining the maximum tension, And an object of the present invention is to provide a transfer device for a printing sheet for a machine.

A conveying apparatus for a printing paper for a digital printing machine according to the present invention comprises: a conveying drum rotatably provided on a printing paper feeding side and an ejecting side of a main body to convey a printing paper; A driving motor connected to any one of the feeding drums positioned on the feeding side and the discharging side of the printing paper to forcibly rotate the feeding drum; A tension holding unit for holding the tension of the printing paper corresponding to the conveying drum side located on the opposite side of the conveyance drum connected to the driving motor; And a control unit for controlling the operation of the driving motor and the tension holding unit to adjust the tension of the printing paper on the main body supply side and the discharge side.

Wherein the tension holding portion is rotatably connected to the main body so as to be disposed on a supply side or a discharge side of the print paper which is not connected to the drive motor, and which guides the transfer of the print paper; And an operation motor connected to the driving drum and operated to adjust a conveying speed of the printing paper under the control of the control unit.

The main body may include a conveyance guide roller rotated to guide the printing paper in the feeding direction and the conveyance direction of the printing paper.

The conveying guide roller may form a stretching member projecting spirally on the peripheral surface to guide the printing paper to be unfolded.

Wherein the main body has a tension roller rotated on a supply side of the printing paper, and the pocket is fixedly installed to receive the end of the tension roller; The tension roller is guided by the pockets by a cylinder member provided in the main body, and can be tensioned by moving up and down.

Wherein the main body comprises a feed roller and an output roller rotatably; Wherein the paper feed roller and the paper discharge roller are respectively connected to a motor; Each motor of the paper feed roller and the paper discharge roller may be controlled by the control unit to rotate the paper feed roller and the discharge roller.

As described above, the transfer device of the printing paper for the digital printing machine according to the present invention is different from the conventional art in that a motor is connected to each drum on both sides of the main body, and each motor is controlled to be operated under the control of the control unit, The tension of the printing paper can be adjusted in each of the paper feeding side and the discharging side.

In addition, the present invention can prevent the printing defects by controlling the rotation of the discharge roller and the feed roller by controlling the control unit, by providing a motor in the discharge roller and the feed roller.

1 is a perspective view of a digital printing machine according to an embodiment of the present invention.
2 is a rear perspective view of a digital printing machine according to an embodiment of the present invention.
3 is a schematic view showing a transfer device of a printing paper for a digital printing machine according to an embodiment of the present invention.
4 is an enlarged perspective view showing an operation state of a tension roller of a transfer device of a printing paper for a digital printing machine according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a transfer apparatus for printing paper for 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, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a digital printing machine according to one embodiment of the present invention, and FIG. 2 is a rear perspective view of a digital printing machine according to an embodiment of the present invention.

FIG. 3 is a schematic view showing a conveying apparatus for a printing paper for a digital printing machine according to an embodiment of the present invention, and FIG. 4 is a view showing an operation state of a tension roller of a conveying apparatus for a printing paper for a digital printing machine according to an embodiment of the present invention Is an enlarged perspective view.

1 to 4, a transfer apparatus for a printing paper for a digital printing machine according to an embodiment of the present invention includes transfer drums 20a and 20b, a drive motor 30, a tension holding unit 40, and a control unit 50 ).

In particular, the conveying drums 20a and 20b, the driving motor 30 and the tension holding portion 40 are provided in the main body of the digital printing machine.

That is, the main body forms an external shape of the digital printing machine and can be modified into various shapes.

The main body is rotatably provided with feed drums 20a and 20b on one side of the supply side of the printing paper 2 and on the other side of the discharge side of the printing paper 2, respectively. A pair of conveying drums 20a and 20b are arranged side by side.

The driving motor 30 also functions to forcibly rotate any one of the conveyance drums 20a provided on one side of the main body or the conveyance drums 20b provided on the other side of the main body.

For convenience, the drive motor 30 is connected to the conveyance drum 20a provided at one side of the main body. In particular, the driving motor 30 may be installed on the conveying drum 20a or may be connected to the conveying drum 20a while being fixed to the main body.

The tension holding unit 40 serves to maintain the tension of the printing paper 2 on the side of the conveying drum 20b located on the opposite side of the conveying drum 20a connected to the driving motor 30. [

That is, the tension holding portion 40 serves to hold the tension of the printing paper 2 by pulling the printing paper 2 conveyed by forced rotation of the conveying drum 20a on one side of the main body from the discharge side .

The control unit 50 controls the operation of the driving motor 30 and the tension holding unit 40 so as to adjust the tension on the main body supply side and the discharge side of the printing paper 2. [

Here, the tension holding portion 40 includes a driving drum 42 and an operating motor 44. [

The driving drum 42 is rotatably connected to the main body so as to be disposed on the discharge side of the printing paper 2 which is the side of the feeding drum 20b which is not connected to the driving motor 30. [ Thus, the driving drum 42 guides the conveyance of the printing paper 2 at the discharge side. At this time, the driving drum 42 is arranged to change the conveying direction of the printing paper 2 conveyed by the conveying drum 20a, thereby giving the printing paper 2 tension.

In addition, the operation motor 44 is connected to the driving drum 42 and operates to adjust the feeding speed of the printing paper 2. [

In particular, the control unit 50 includes a drive motor 30 for rotating the feed drum 20a located on the supply side of the printing paper 2, and a driving motor 42 for rotating the driving drum 42 located on the discharge side of the printing paper 2. [ And controls the operation motor 44 to rotate.

At this time, the main body may be provided with a limit sensor (not shown) on the supply side and the discharge side so as to detect deflection of the printing paper 2. [ The limit sensor transmits a deflection signal of the printing paper 2 to the control unit 50. [

In addition, the control unit 50 detects the loads of the conveying drum 20a and the operation motor 44. [ The control unit 50 can control the driving of the conveyance drum 20a or the operation motor 44 through the detected load difference between the conveyance drum 20a and the operation motor 44 when the printing paper 2 is pulled too far .

On the other hand, the main body may be provided with a conveyance guide roller 60 which is rotated to guide the printing paper 2 with additional tension at the supply side and the discharge side of the printing paper 2, respectively.

In particular, each of the conveyance guide rollers 60 protrudes and forms a stretching member 62 on the circumferential surface. The stretching member 62 serves to unfold the printing paper 2 that is formed by projecting in a mountain-like manner on the circumferential surface of each of the conveyance guide rollers 60.

Of course, the thickness and the number of the conveying guide rollers 60 are not limited, and the shape of the stretching member 62 can be variously applied.

In addition, the main body is provided with a tension roller (70) rotatably on the supply side of the printing paper (2). The tension roller 70 serves to additionally apply the tension of the printing paper 2 on the feeding side. Of course, the thickness of the tension roller 70 is not limited.

In addition, the main body fixes the pockets 72 on both sides facing each other to receive both end portions of the tension roller 70. Then, the pocket 72 penetrates the guide groove portion 73 in the vertical direction. As a result, each edge of the tension roller 70 becomes vertically movable along the guide groove portion 73 of the corresponding pocket 72.

In addition, the tension roller 70 is guided along the guide groove portion 73 of the pocket 72 by the cylinder member 74 provided in the main body, and is moved up and down. As a result, the tension of the printing paper 2 is increased.

At this time, the cylinder member 74 is connected to the edge of the tension roller 70 so that the tension roller 70 is rotatable. The tension roller 70 has bearing members 71 on both sides and the cylinder member 74 is connected to the bearing member 71.

Therefore, the cylinder member 74 can move up and down the tension roller 70 rotatable in the circumferential direction.

On the other hand, the main body is rotatably provided with a paper feed roller 82 for feeding the printing paper 2 and a paper output roller 84 for winding the printed paper 2 thereon.

The paper feed roller 82 is connected to the paper feed motor 83 and rotated forcibly, and the paper feed roller 84 is connected to the paper feed operation motor 85 and rotated forcibly.

In addition, the paper feeding operation motor 83 and the paper discharging operation motor 85 are controlled and actuated by the control unit 50.

That is, the control unit 50 simultaneously controls the drive motor 30, the operation motor 44, the paper feed motor 83, and the paper feed motor 85 so that the print paper 2 is smoothly conveyed .

At this time, the control unit 50 controls whether the drive motor 30, the operation motor 44, the paper feed motor 83, and the paper feed motor 85 operate according to external signals from various sensors or operators.

In addition, the cylinder member 74 is separately operated by an operation signal of a sensor or an operator to set the position of the tension roller 70.

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 20a, 20b: conveying drum
30: drive motor 40: tension holding portion
42: drive drum 44: operation motor
50: control unit 60: conveying guide roller
62: stretching member 70: tension roller
72: pocket 73: guide groove
74: cylinder member 82: feeding roller
83: paper feed operation motor 84: paper discharge roller
85: medium driving motor

Claims (6)

A feeding drum rotatably provided on the printing paper supply side and the discharging side of the main body, respectively, for switching the feeding direction of the printing paper and feeding the paper; A drive motor for forcibly rotating the supply side delivery drum of the printing paper; And a tension holding portion for holding the tension of the printing paper on the conveying drum side freely rotated on the discharge side of the printing paper,
Wherein the tension holding portion includes: a driving drum disposed on a discharge side of the printing paper and rotatably connected to the body to guide the conveyance of the printing paper; And an operation motor which is operated to adjust a conveying speed of the printing paper,
Wherein the main body comprises: a feeding roller rotatably provided in the main body to feed the printing paper to a feeding drum on a feeding side of the printing paper; A discharge roller rotatably installed in the main body so as to wind the print paper discharged from the delivery drum on the discharge side of the print paper; A paper feed motor for forcibly rotating the paper feed roller; And a discharge operation motor for forcibly rotating the discharge roller,
The driving drum and the operation motor are controlled to adjust the tension of the printing paper by the control unit through the detected load difference,
Wherein the main body includes a tension roller that is rotated on a supply side of the printing paper, the tension roller includes bearing members on both sides, and a pocket is fixedly installed to receive the bearing member in one-
The bearing members are respectively connected to the lower side of the cylinder member provided in the main body and guided linearly up and down along the guide groove portions of the corresponding pockets,
Wherein the tension roller applies tension to the printing paper and protects the printing paper as the abrupt position shift of the printing paper is prevented according to the tension state of the printing paper.
delete The method according to claim 1,
Wherein the main body comprises a conveyance guide roller rotated to guide the printing paper in tension on the supply side and the discharge side of the printing paper.
The method of claim 3,
Wherein the conveying guide roller forms a stretching member which is spirally projected on a circumferential surface to guide the printing paper to be unfolded.
delete delete
KR1020150155404A 2015-11-05 2015-11-05 Printing sheet transfer device of digital printing machine KR101800879B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102112472B1 (en) * 2018-06-20 2020-05-20 (주)디지아이 Digital printing machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101073707B1 (en) * 2009-06-24 2011-10-14 주식회사 디지아이 Tension control device of digital printing machine
JP2014184988A (en) * 2013-03-21 2014-10-02 Fuji Xerox Co Ltd Speed controller, image processor, and speed control program

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101073707B1 (en) * 2009-06-24 2011-10-14 주식회사 디지아이 Tension control device of digital printing machine
JP2014184988A (en) * 2013-03-21 2014-10-02 Fuji Xerox Co Ltd Speed controller, image processor, and speed control program

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