KR102361989B1 - Digital Printing Machine for Advertising Fabric Printing - Google Patents

Abstract

The present invention relates to a digital printing machine for printing a flyer material, which outputs a printout on a transferred material while transferring an advertising material. The digital printing machine of the present invention comprises: a printing housing; a supply roll provided in the print housing, and supplying a material; a recovery roll for recovering the material supplied from the supply roll; a transfer unit for transferring the material; and a printhead for outputting a printout on the material. Also, a tension maintaining unit for constantly maintaining tension of the material moved to the recovery roll from the supply roll is further provided in the printing housing. The digital printing machine for printing a flyer material has the tension maintaining unit and an elastic tension maintaining means to perform printing in a state that constant tension is maintained in the transferred material, such that printing can be performed in the uniform quality. Also, the printing quality can be effectively improved by preventing a material from being folded or rolled, and impact or vibration generated during a printing process can be buffered by maintaining tension due to elasticity.

Description

Digital Printing Machine for Advertising Fabric Printing}

The present invention relates to a digital printing machine for printing flyer fabric, and more particularly, by providing a tension maintaining unit and an elastic tension maintaining means in the digital printing machine so that printing is performed in a state in which a constant tension is maintained on the transferred fabric, the printing is performed with uniform quality. For printing flyer fabrics that allow printing, prevent the fabric from being folded or curled, and effectively improve print quality, and that tension is maintained by elasticity to cushion shocks or vibrations occurring during the printing process. It is about a digital printing press.

In general, a digital printing machine (Digital Printing Machine) digitizes a desired output signal from a digital control unit, and creates various colors by adding ink to a printing paper (printed object) from a head that ejects ink, but often ( Magenta; M), yellow (yellow; Y), cyan (cyan; C), and black (black; BK) are supplied using a subtractive mixing technique to allow users to draw a desired pattern.

In order to use the subtractive mixing technique described above, the ink having each color is individually accommodated and supplied to a printhead that scans each color, and the ink of the color injected from each printhead is overpainted to reveal a new color. .

In the case of using a long output paper in a digital printing press, a roll on which the output paper is wound is used. In addition, the output paper should be transferred at a constant speed from the lower part of the head of the digital printing press while applying a certain tension.

To this end, in the prior art, a supply roll installed on a supply shaft to supply an output to the front and the rear respectively with respect to the head of the digital printing machine and a recovery roll installed on the recovery shaft to wind and collect the outputted object. .

However, in the conventional digital printing apparatus, the tension is not constant in the process of moving the object to be printed, and there is a difference in the feed speed, which causes an imbalance in the amount of winding and unwinding between the supply roll and the recovery roll. There was a growing problem.

The above-mentioned invention refers to the background of the technical field to which the present invention pertains, and does not mean the prior art.

Republic of Korea Patent No. 10-1948690

The present invention has been devised to solve the problems of the prior art, and an object of the present invention is to provide a tension maintaining unit and an elastic tension maintaining means in a digital printing machine so that printing is performed in a state in which a constant tension is maintained on the transferred fabric. It allows printing to be made with uniform quality, prevents the fabric from being folded or curled, and effectively improves the print quality. An object of the present invention is to provide a digital printing machine for printing flyers.

In order to achieve the above object, the present invention

As a digital printing machine that transports advertisement fabric and outputs printed matter on the transported fabric,

print housing;

a supply roll provided in the printing housing and supplying the fabric;

a recovery roll for recovering the fabric supplied from the supply roll;

a transfer unit for transferring the fabric; and

It is made including a printhead for outputting a print to the fabric,

It provides a digital printing machine for printing flyer fabric, characterized in that the printing housing is further provided with a tension maintaining unit to constantly maintain the tension of the fabric moving from the supply roll to the recovery roll.

In one embodiment of the present invention, the tension maintaining unit is provided on a fixed bracket installed in the printing housing, a transfer cylinder having one end connected to the fixed bracket and fixed, and a transfer shaft of the transfer cylinder, the transfer cylinder It is characterized in that it consists of a guide bracket moved by the driving of, and a pressure guide roller that is rotationally fastened to the guide bracket of the conveying shaft, and pressurizes the fabric by driving the conveying cylinder to maintain tension.

In addition, in one embodiment of the present invention, the tension maintaining unit is further provided with an elastic tension maintaining means to support the fabric moved by elasticity to maintain the tension, the elastic tension maintaining means is the transfer of the transfer cylinder A first fastening protrusion formed on the shaft, a second fastening protrusion formed on the guide bracket, a front end is connected to the first fastening protrusion, and an end is connected to the second fastening protrusion, thereby supporting the distal end by elasticity It is characterized in that it is made of a coil spring.

In addition, in one embodiment of the present invention, the friction elastic tube is further fitted and fixed to the pressure guide roller to increase the frictional force with the moving fabric in the tension maintaining unit, and the outer surface of the friction elastic tube is attached to the fabric It is characterized in that the elastic friction protrusions are further integrally formed so as to be caught.

The digital printing machine for printing flyer fabric according to the present invention provides a tension maintaining unit and an elastic tension maintaining means in the digital printing machine so that printing is performed in a state where a constant tension is maintained on the transferred fabric, so that printing can be made with uniform quality, and the fabric is It can effectively improve the print quality by preventing folding or curling, and has the effect of buffering the shock or vibration generated during the printing process by maintaining the tension by elasticity.

1 is a conceptual diagram showing a digital printing machine for printing flyer fabric according to the present invention.
2 is a front view showing the tension maintaining unit of the digital printing machine for printing flyer fabric according to the present invention.
3 is a plan view showing the tension maintaining unit of the digital printing machine for printing flyer fabric according to the present invention.
Figure 4 is a conceptual diagram showing the operating state of the digital printing press for flyer fabric printing according to the present invention.
Figure 5 is a front view showing the elastic tension maintaining means of the digital printing machine for printing flyer fabric according to the present invention.
6 is an exploded view showing the elastic tension maintaining means of the digital printing machine for printing flyer fabric according to the present invention.
7 is a view showing another embodiment of the digital printing machine for printing flyers according to the present invention.
8 is a view showing another embodiment of the digital printing machine for printing flyers according to the present invention.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea.

On the other hand, the meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the embodied feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

In each step, identification numbers (eg, a, b, c, etc.) are used for convenience of description, and identification numbers do not describe the order of each step, and each step clearly indicates a specific order in context. Unless otherwise specified, it may occur in a different order from the specified order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

1 is a conceptual diagram showing a digital printing machine for printing flyer fabric according to the present invention. 2 is a front view showing the tension maintaining unit of the digital printing machine for printing flyer fabric according to the present invention. 3 is a plan view showing the tension maintaining unit of the digital printing machine for printing flyer fabric according to the present invention. Figure 4 is a conceptual diagram showing the operating state of the digital printing press for flyer fabric printing according to the present invention. Figure 5 is a front view showing the elastic tension maintaining means of the digital printing machine for printing flyer fabric according to the present invention. 6 is an exploded view showing the elastic tension maintaining means of the digital printing machine for printing flyer fabric according to the present invention. 7 is a view showing another embodiment of the digital printing machine for printing flyers according to the present invention. 8 is a view showing another embodiment of the digital printing machine for printing flyers according to the present invention.

As shown in the drawing, the present inventor's digital printing machine 10 for printing flyer fabric (hereinafter, referred to as 'digital printing machine' for convenience of description) transports the advertising fabric 100 as well as the printed material on the fabric 100 to be transferred. As a digital printer 10 for outputting, the digital printer 10 according to the present invention includes a printing housing 20 , a supply roll 30 , a recovery roll 40 , a transfer unit 50 , and a print head 60 . is composed by

The printing housing 20 is made of a housing structure having a working space therein, and the material is formed of a metal material or a synthetic resin material.

The printing housing 20 is moved by further providing casters at the lower portion to be movable, so that the printing operation can be performed.

The supply roll 30 is provided in the printing housing 20 and supplies the fabric 100 .

The supply roll 30 is pivotally coupled to the inside of the printing housing 20 . The fabric 100 to be printed is wound on the supply roll 30 .

The supply roll 30 and the recovery roll 40 are formed of a drum and a rotating shaft integrally formed at both ends of the drum, and the rotating shaft is rotatably coupled to the inner surface of the printing housing 20 .

The recovery roll 40 recovers the fabric 100 supplied from the supply roll 30 .

The recovery roll 40 is axially coupled to the inside of the printing housing 20 , and is rotated by receiving the driving force of the transfer unit 50 .

The fabric 100 printed on the recovery roll 40 is wound.

Bearings are provided on the inner surface of the printing housing 20 so that the supply roll 30 and the recovery roll 40 are rotatably fastened to the bearing.

The transfer unit 50 transfers the fabric 100 .

The transfer unit 50 is a drive motor disposed inside the printing housing 20, and the drive motor is connected to the recovery roll 40 by a belt or gear, and the recovery roll is driven by the drive motor. (40) is rotated.

The fabric 100 of the supply roll 30 is unwound and moved by the rotation of the recovery roll 40 , and after being printed by the print head 60 , it is wound around the recovery roll 40 .

The print head 60 outputs a print to the fabric 100 .

A base panel 21 is disposed on the inner upper portion of the printing housing 20 , and a curved guide surface is provided on the upper surface of the base panel to prevent the moving fabric 100 from rubbing. The base panel 21 is screwed to the inner surface of the printing housing 20 to be fixed.

The supply roll 30 and the recovery roll 40 are disposed below the base panel 21 .

The print head 60 is disposed on the upper side of the base panel 21 , and is fixed by screwing to the print housing 20 .

The print head 60 performs a printing operation by spraying ink dye on the fabric 100 moving along the guide surface of the base panel 21 .

The fabric 100 is made of a synthetic fiber material, a synthetic film or a natural fiber material.

Here, it is preferable that a bearing groove is further formed on the guide surface, a roll bearing is fastened to the bearing groove to rotate, and a part thereof is disposed to protrude to the outside, so that the roll bearing guides the fabric 100 .

In addition, by further screwing and fixing a vibrator, which is a vibrator, to the bottom surface of the base panel 21, the vibration of the vibrator is transmitted to the fabric 100 through the base panel 21 to reduce friction or jamming. it is preferable

At this time, the printing housing 20 may be further provided with a tension maintaining unit 70 to constantly maintain the tension of the fabric 100 moving from the supply roll 30 to the recovery roll 40 . .

Tension is maintained in the process of moving the fabric 100 by the tension maintaining unit 70 to prevent sagging, curling, or folding of the fabric 100 in the process of moving, and uniform quality printing is performed. can do.

The tension maintaining unit 70 includes a fixing bracket 71 screwed to the inner surface of the printing housing 20, a conveying cylinder 72 having one end screwed to the fixing bracket 71 and fixed, and the conveying A guide bracket 73 fixed to the conveying shaft of the cylinder 72 and moved by driving of the conveying cylinder 72, and rotationally coupled to the guide bracket 73 of the conveying shaft, the conveying cylinder 72 ) consists of a pressure guide roller 74 for maintaining tension by pressing the fabric 100 by driving.

The transfer cylinder 72 maintains a certain angle and is fastened to the fixing bracket 71 to be fixed.

The pressure guide roller 74 presses the back surface of the moving fabric 100 to maintain the tension of the fabric 100, and the pressure guide roller 74 is rotated by the moving fabric 100 It is possible to prevent the fabric 100 from being caught or rubbed during the movement process.

The pressure guide roller 74 presses the back surface of the fabric 100 moving between the base panel 21 and the recovery roll 40 .

Alternatively, it is also possible to press the fabric 100 moving between the base panel 21 and the supply roll 30 with the pressure guide roller 74 to maintain tension, and a pair of transfer cylinders 72 ), each of the press rollers moving between the base panel 21 and the recovery roll 40, the fabric 100, and the base panel 21 and the supply roll 30, moving the fabric It is also possible to press (100) to maintain tension.

The pressure guide roller 74 presses the fabric 100 in the direction of the side panel of the printing housing 20 in the drawing.

Here, the lower end of the elevating cylinder is screwed to the upper surface of the bottom panel of the printing housing 20, and the fixing bracket 71 is screwed to the elevating shaft of the elevating cylinder. By elevating the roller 74, it is preferable to be able to change the position to be pressed.

An elastic tension maintaining means 80 may be further provided in the tension maintaining part 70 to support the fabric 100 moved by elasticity to maintain tension.

The elastic tension maintaining means 80 includes a first fastening protrusion 81 formed on the transfer shaft of the transfer cylinder 72, a second fastening protrusion 82 formed on the guide bracket 73, and the second fastening protrusion 82 formed on the guide bracket 73. The front end is connected to the first fastening protrusion 81 and the end is connected to the second fastening protrusion 82, and consists of an elastic coil spring 83 that supports the fabric 100 by elasticity.

The first fastening protrusion 81 is integrally formed with the end of the transfer shaft of the transfer cylinder 72 , and the second fastening protrusion 82 is integrally formed with the outer surface of the guide bracket 73 .

The elastic coil spring 83 is fixed by force fitting to the first fastening protrusion 81 and the second fastening protrusion 82, and it is also possible to fix it by bonding or welding after being fitted. The transfer shaft of the transfer cylinder 72 and the guide bracket 73 are connected by the elastic coil spring 83 .

By supporting the fabric 100, which is moved by the elasticity of the elastic coil spring 83, it is possible to buffer vibrations or shocks generated in the process of moving the fabric 100, and by elasticity, the fabric ( By pressing 100) so that the tension is maintained, it is possible to prevent damage to the fabric 100 from occurring in the process of pressing, and to buffer the transmission of the pressing force.

Here, by further screwing and fixing a vibrator, which is a vibrator, to the outer surface of the guide bracket 73, the vibration of the vibrator is transmitted to the shaft of the guide bracket 73 and the pressure guide roller 74, and the pressure guide It is preferable to prevent the roller 74 from rubbing with the fabric 100 in a state in which the roller 74 is not rotated by being caught by the shaft, and to guide the fabric 100 while smoothly rotating by vibration.

A friction elastic tube body 741 is further fitted and fixed to the pressure guide roller 74 to increase the frictional force with the moving fabric 100 in the tension maintaining unit 70, and the outer surface of the friction elastic tube body 741 The elastic friction protrusions 741a are further integrally formed so as to be caught on the fabric 100 .

The pressure guide roller 74 and the elastic friction protrusion 741a and the fabric 100 are formed by inserting and fixing a friction elastic tube body 741 made of a synthetic resin material having elasticity to the pressure guide roller 74 and fixing it. By friction, the pressure guide roller 74 is able to guide uniformly, and the pressure guide roller 74 is rubbed with the fabric 100 that is moved without rotation, thereby preventing damage to the fabric 100 can do.

In addition, the shock or vibration transmitted to the fabric 100 is buffered by the elasticity of the friction elastic tube 741 to prevent the fabric 100 from being damaged again, and smooth guidance is possible.

As mentioned above, the present invention has been described in detail with reference to the drawings, but it is clear that the embodiments mentioned in the process are merely exemplary and not limiting, and the present invention is the scope of the present invention provided by the following claims. Within the scope that does not depart from the technical spirit or field, it will be said that component changes to a degree that can be equally dealt with fall within the scope of the present invention.

10: digital printing machine 20: printing housing
21: base panel
30: supply roll 40: recovery roll
50: transfer unit 60: print head
70: tension maintaining part 71: fixing bracket
72: transfer cylinder 73: guide bracket
74: pressure guide roller 741: friction elastic tube body
741a: elastic friction protrusion 80: elastic tension maintaining means
81: first fastening protrusion 82: second fastening protrusion
83: elastic coil spring 1 00: fabric

Claims (4)

As a digital printing machine that transports advertisement fabric and outputs printed matter on the transported fabric,
A printing housing, a supply roll provided in the printing housing and supplying the fabric, a recovery roll for collecting the fabric supplied from the supply roll, a transport unit for transporting the fabric, and a print for outputting a print to the fabric In the digital printing machine for printing flyer fabric comprising a head, the printing housing further provided with a tension maintaining unit to constantly maintain the tension of the fabric moving from the supply roll to the recovery roll,
The tension maintaining unit includes a fixing bracket installed in the printing housing;
a transfer cylinder having one end connected to the fixing bracket and fixed;
a guide bracket provided on the transfer shaft of the transfer cylinder and moved by driving of the transfer cylinder;
Consists of a pressure guide roller that is rotatably fastened to the guide bracket of the conveying shaft and maintains tension by pressing the fabric by driving the conveying cylinder,
To the bottom panel of the printing housing, the lower end of the elevating cylinder is screwed onto the upper surface, and the fixing bracket is screwed to the elevating shaft of the elevating cylinder to elevate the conveying cylinder and the pressure guide roller,
By further screwing and fixing a vibrator, which is a vibrator, to the outer surface of the guide bracket, a digital printing machine for printing flyer fabric, characterized in that the vibration of the vibrator is transmitted to the shaft of the guide bracket and the pressure guide roller.
delete The method of claim 1,
An elastic tension maintaining means is further provided in the tension maintaining part to support the fabric moved by elasticity to maintain the tension,
The elastic tension maintaining means,
a first fastening protrusion formed on the transfer shaft of the transfer cylinder;
a second fastening protrusion formed on the guide bracket;
A digital printing press for flyer fabric printing, characterized in that the front end is connected to the first fastening protrusion and the end is connected to the second fastening protrusion, and the elastic coil spring is configured to support the fabric by elasticity.
The method of claim 1,
The friction elastic tubular body is further fitted and fixed to the pressure guide roller to increase the frictional force with the moving fabric in the tension maintaining part,
A digital press for printing flyer fabric, characterized in that the elastic friction protrusions are further integrally formed on the outer surface of the friction elastic tube body so as to be caught on the fabric.

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