KR102335153B1 - Offset printing device - Google Patents

Abstract

Disclosed is an offset printing apparatus capable of expressing color tones on an object to be printed with equal to or more than four colors and selectively applying the colors to be printed as needed. The offset printing apparatus comprises: a supply unit having a to-be-printed object wound therein and configured to unwind the wound to-be-printed object; and a printing unit configured to perform printing step by step on the to-be-printed object unwound from the supply unit. The printing unit is configured to print six different colors on the to-be-printed object.

Description

Offset printing device

The present invention relates to an offset printing apparatus.

In general, the offset printing apparatus is a device that does not directly print on the object, but uses a blanket roller serving as an intermediate medium to print on the object.

This offset printing apparatus basically includes a plurality of offset units having three rollers.

Here, the three rollers included in each offset unit rotate between a plate roller to which water and ink are supplied, the plate roller and the object to be printed, and transfer the ink transferred by the plate roller to the object to be printed. A blanket roller and an impression roller disposed opposite to the blanket roller with the object to be printed therebetween and rotating together with the blanket roller to press the object toward the blanket roller.

A number of offset units color-separate a pattern or picture to be printed into CMYK (Cyan, Magenta, Yellow, and black), engrave it in four colors, and print with CMYK four color printing pigments.

That is, the plurality of offset units are configured to print the object to be printed in colors of cyan, magenta, yellow, and black, respectively. In addition, a plurality of offset units are sequentially arranged along the movement path of the object to be printed. Accordingly, the object to be moved in one direction is sequentially passed through a plurality of offset units, through which each color is sequentially printed on the object to be printed.

However, as the conventional offset printing apparatus is configured to express color tones on a printed object using only four colors, there is a limitation in color tone expression, which makes it difficult to express accurate colors when high saturation or brightness is required.

On the other hand, in order to solve the above problems, in the prior art, color correction is performed by additionally printing a printed object that has been printed. There was a problem in that the manufacturing cost due to the increase.

Registered Patent Publication No. 10-1736542

The present invention has been devised to solve the above problems, and an object of the present invention is to express a color tone on a printed object in four or more colors, and an offset printing apparatus capable of selectively applying a color to be printed as needed is to provide

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Offset printing apparatus according to an embodiment of the present invention for solving the above problems is a to-be-printed object is wound, a supply unit configured to unwind the wound to-be-printed object; and a printing unit configured to perform printing step-by-step on the to-be-printed object unwound from the supply unit, wherein the printing unit is configured to print six different colors on the to-be-printed object.

The printing unit may be configured to selectively print three colors out of the six different colors on the to-be-printed object.

The printing unit may include: a first printing unit disposed in front of the supply unit along a moving direction of the to-be-printed object and configured to print a first color on the to-be-printed object; a second printing unit disposed in front of the first printing unit along the moving direction of the object and configured to print a second color different from the first color on the object; a third printing unit disposed in front of the second printing unit along the moving direction of the object and configured to print the first color and a third color different from the second color on the object; A fourth print disposed in front of the third printing unit along the moving direction of the object and configured to print the first color, the second color, and a fourth color different from the third color on the object unit; disposed in front of the fourth printing unit along the moving direction of the object to print the first color, the second color, the third color, and a fifth color different from the fourth color a fifth printing unit configured; The first color, the second color, the third color, the fourth color, and the fifth color are different from the first color, the second color, and the fifth color disposed in front of the fifth printing unit along the moving direction of the object a sixth printing unit configured to print 6 colors; a first printing auxiliary unit disposed below the second printing unit and configured to selectively contact the object to be printed with the second printing unit; a second printing auxiliary unit disposed below the fourth printing unit and configured to selectively contact the object to be printed on the fourth printing unit; and a third printing auxiliary unit disposed below the sixth printing unit and configured to selectively contact the object to be printed on the sixth printing unit.

The first printing unit, the third printing unit and the fifth printing unit may include: a first plate cylinder to which water and ink are supplied; a first blanket cylinder rotated between the first plate cylinder and the object to transfer the ink transferred by the first plate cylinder to the object; and an impression cylinder disposed opposite to the first blanket cylinder with the object interposed therebetween and configured to press the object toward the first blanket cylinder while rotating together with the first blanket cylinder. The printing unit, the fourth printing unit and the sixth printing unit may include a second plate cylinder to which water and ink are supplied; and a second blanket cylinder which is rotated between the second plate cylinder and the object to transfer the ink transferred by the second plate cylinder to the object to be printed. The second auxiliary printing unit and the third auxiliary printing unit may include a support plate; It is rotatably coupled to the support plate, disposed opposite to the second blanket cylinder with the object interposed therebetween, and is raised by the support plate and rotates together with the second blanket cylinder when it comes into contact with the object to be printed. a movable impression cylinder configured to press the object toward the second blanket cylinder; a plurality of first guide rollers disposed opposite to the front and rear of the movable impression cylinder and configured to guide the movement of the printed object; a plurality of roller support units rotatably coupled to the support plate to support the plurality of first guide rollers; A plurality of rotatably coupled to the support plate is disposed opposite to the front and rear of the plurality of first guide rollers, and configured to guide the movement of the printed object at a position relatively lower than that of the plurality of first guide rollers. a second guide roller; and the plurality of second guide rollers coupled to the plurality of second guide rollers and elevating the plurality of second guide rollers connected to the support plate while being extended or contracted so that the to-be-printed objects supported by the plurality of first guide rollers are transferred to the second blanket cylinder. A plurality of lifting hydraulic cylinders configured to contact or separate; Including, wherein the plurality of roller support unit includes: a hydraulic cylinder for adjusting tension configured to support the first guide roller and adjust the tension of the object supported by the first guide roller while being extended or contracted; And a part is rotatably coupled to the support plate, and the other part supports the hydraulic cylinder for adjusting the tension, and while rotating the hydraulic cylinder for adjusting the tension in a clockwise or counterclockwise direction by a preset angle, the first guide roller is supported. It may include; a rotation motor for adjusting the tension configured to adjust the tension of the printed object.

a drying unit configured to dry the printed area by spraying air on the surface of the to-be-printed object passing through the printing unit; a cutting unit configured to cut the to-be-printed object passing through the drying unit to a preset size; and a storage unit for storing the to-be-printed material passing through the cutting unit, wherein the cutting unit supports the left and right ends of the to-be-printed material flowing into the inside through the drying unit to determine the center of the printed material an alignment unit configured to align parallel to the moving direction of the object; a cutting unit disposed on the upper side of the to-be-printed object and configured to continuously cut the to-be-printed object moving in one direction; and a plurality of paperweight rollers disposed in front and rear of the cutting unit and configured to transport the object while being rotated in contact with the upper and lower surfaces of the object to be printed. a first alignment unit configured to elastically support the end; and a second alignment unit configured to elastically support the right end of the to-be-printed object, wherein the first alignment unit and the second alignment unit include: an alignment motor configured to generate a rotational force; an adjustment nut rotated by the alignment motor and having a thread on an inner circumferential surface; A first accommodating space that is screwed to the adjusting nut so as to be movable to the inside of the adjusting nut or the outside of the adjusting nut along the longitudinal direction of the adjusting nut, the first receiving space communicating with the outside therein; and the first receiving space communicating with the first receiving space and an adjustment bolt having a second accommodating space having a size different from that of the first accommodating space; an elastic member accommodated in the second accommodating space; and a support plate that is partially accommodated in the adjustment bolt and is elastically supported by the elastic member, and the other portion is disposed outside the adjustment bolt and configured to support an end of the object to be printed. Silver, a flat plate-shaped first support for supporting the end portion of the printed object; a second support part having an arc shape extending from an end of the first support part and guiding the object to be printed toward the first support part; a guide shaft part extending from the first support part and being accommodated in the first accommodating space; and a locking part coupled to the end of the guide shaft and disposed in the second accommodating space, and configured to be supported by being caught by a stepped portion between the first accommodating space and the second accommodating space by being pressed by the elastic member. may include

The cutting unit may include a cam unit; a cutter configured to continuously cut the to-be-printed object by being repeatedly pressed against the cam unit; a guide member configured to support an outer surface of the cutter to guide a movement direction of the cutter; and an elastic restoring member accommodated in the guide member to elastically support the cutter, and applying a reaction force to the cutter to return the cutter to its original position when the cutter cuts the to-be-printed object; The cam unit includes: a driving motor configured to generate a rotational force; and a cam member formed in an elliptical structure and configured to sequentially press and release the cutter while being rotated by the driving motor, wherein the cutter is supported by the guide member and is pressed by the cam member. ; a blade coupled to an end of the main body and configured to cut the to-be-printed object; and support wings accommodated in the guide member and elastically supported by the elastic restoring member.

According to an embodiment of the present invention, since it is possible to print on the object to be printed in four or more different colors, various color tones can be expressed, and accurate color expression can be achieved even when high saturation or brightness is required.

In addition, since the additional printing process for color correction is omitted, it is possible to perform a quick operation, thereby improving work efficiency and productivity, as well as reducing manufacturing costs.

In addition, since the color to be printed on the object can be selectively applied according to the set printing purpose, various types of printing are possible, thereby maximizing the utility.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present invention.

1 is a side view schematically showing an offset printing apparatus according to an embodiment of the present invention.
2 is a side view schematically showing a printing unit according to an embodiment of the present invention.
3 is a schematic front view of a printing auxiliary unit according to an embodiment of the present invention.
4 is a schematic side view of a printing auxiliary unit according to an embodiment of the present invention.
5 is a side view schematically showing a cutting part according to an embodiment of the present invention.
6 is a plan view schematically showing an alignment unit according to an embodiment of the present invention.
7 is a schematic side view of a cutting unit according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. 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 or connected to the other component, but it should be understood that another component may exist in between.

The terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be implemented independently of each other, It may be possible to implement together in a related relationship.

1 is a side view schematically showing an offset printing apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , an offset printing apparatus 1 (hereinafter referred to as an 'offset printing apparatus 1') according to an embodiment of the present invention includes a supply unit 10 and a printing unit 20 .

The supply unit 10 is configured to unwind the to-be-printed object P is wound, and to unwind the to-be-printed object P.

For example, the supply unit 10 includes a supply roll (not shown) on which the to-be-printed object P is wound, a rotation shaft (not illustrated) coupled to the supply roll to rotate the supply roll, and both ends of the rotation shaft rotatably supported. a frame (not shown) to be accommodated in the frame, and a shaft rotation motor (not shown) configured to rotate the rotating shaft by being coupled to one side of the rotating shaft, coupled to both ends of the rotating shaft, and to the rotating shaft when the rotating shaft rotates It may include a buffer (not shown) configured to mitigate the generated vibration. In this case, the buffer unit may include a first buffer member (not shown) for alleviating vibration acting in the radial direction of the rotation shaft, and a second buffer member (not shown) for alleviating vibration acting in the axial direction of the rotation shaft. Here, the first buffer member and the second buffer member may be made of an elastic body made of rubber or silicone material, or a buffer assembly structure to which a spring and link assembly structure is applied to mechanically alleviate vibration.

For reference, in this embodiment, although the object P is described as being wound in the form of a roll (ROLL), this is only an example, and the object P is not necessarily limited thereto, and can be changed in various forms. and can be applied.

The printing unit 20 is configured to perform printing step by step on the to-be-printed object P unwound from the supply unit 10 .

The printing unit 20 is configured to print six different colors on the object P.

2 is a side view schematically showing a printing unit according to an embodiment of the present invention.

1 and 2, the printing unit 20 is disposed in front of the supply unit 10 along the moving direction of the object P, and is configured to print a first color on the object P The first printing unit 21 and arranged in front of the first printing unit 21 along the moving direction of the object P, configured to print a second color different from the first color on the object P It may include a second printing unit 22 that is. And, the printing unit 20 is disposed in front of the second printing unit 22 along the moving direction of the object P, and a third color different from the first color and the second color on the object P is disposed in front of the third printing unit 23 along the moving direction of the third printing unit 23 and the object P, configured to print the first color, the second color on the object P and a fourth printing unit 24 configured to print a fourth color different from the third color. And, the printing unit 20 is disposed in front of the fourth printing unit 24 along the moving direction of the to-be-printed object P, and a first color, a second color, a third color, and A fifth printing unit 25 configured to print a fifth color different from the fourth color, and disposed in front of the fifth printing unit 25 along the moving direction of the object P, the object P may include a sixth printing unit 26 configured to print a sixth color different from the first color, the second color, the third color, the fourth color, and the fifth color.

In addition, the printing unit 20 may be configured to selectively print three colors out of six different colors on the object P.

Referring to FIG. 2 , the printing unit 20 is disposed on the lower side of the second printing unit 22 , and is configured to selectively bring the object P into contact with the second printing unit 22 . The auxiliary unit 27 and the second printing auxiliary unit 28 disposed on the lower side of the fourth printing unit 24 and configured to selectively contact the object P to the fourth printing unit 24 and , may include a third printing auxiliary unit 29 disposed below the sixth printing unit 26 and configured to selectively contact the object P to the sixth printing unit 26 .

At this time, the three printing units configured to print three colors fixedly on the object P and the three printing units configured to selectively print another three colors on the object P are mutually It may have a different structure.

Referring to Figure 2, the first printing unit 21, the third printing unit 23 and the fifth printing unit 25, which are configured to print three colors fixedly on the object P, water ( The first plate cylinder PC1 supplied with ink (not shown) and the ink (not shown), rotated between the first plate cylinder PC1 and the object P, and transferred by the first plate cylinder PC1 The first blanket cylinder BC1 for transferring ink to the object P, and the first blanket cylinder BC1 with the object P interposed therebetween are disposed opposite to each other and rotated together with the first blanket cylinder BC1 It may include an impression cylinder (IC) configured to press the object (P) toward the first blanket cylinder (BC1).

And, the second printing unit 22, the fourth printing unit 24 and the sixth printing unit 26, which are configured to selectively print another three colors on the to-be-printed object P, are water (not shown) ) and a second plate cylinder PC2 supplied with ink (not shown), rotated between the second plate cylinder PC2 and the to-be-printed object P, and the ink transferred by the second plate cylinder PC2 It may include a second blanket cylinder BC2 transferred to the object (P).

That is, the first printing auxiliary unit 27 , the second printing auxiliary unit 28 and the third printing auxiliary unit 29 to be described later, respectively, the second printing unit 22 , the fourth printing unit 24 and the second printing unit 22 , As the 6 printing unit 26 is configured to perform the functions of the impression cylinder (IC) in parallel, the second printing unit 22, which is configured to selectively print another three colors on the object P, the fourth The printing unit 24 and the sixth printing unit 26 do not include the impression cylinder IC.

Accordingly, the structure of the second printing unit 22 , the fourth printing unit 24 and the sixth printing unit 26 is relatively simplified, so that replacement and maintenance can be easy.

3 is a front view schematically showing a printing auxiliary unit according to an embodiment of the present invention, and FIG. 4 is a side view schematically showing a printing auxiliary unit according to an embodiment of the present invention.

2 to 4 , the first printing auxiliary unit 27 , the second printing auxiliary unit 28 and the third printing auxiliary unit 29 are, respectively, a support plate SP and a movable impression cylinder ( MIC), a plurality of first guide rollers GR1 , a plurality of roller support units RS, a plurality of second guide rollers GR2 , and a plurality of lifting hydraulic cylinders LC. .

The support plate SP is disposed to face each other along the width direction of the object P and includes a movable impression cylinder MIC, a plurality of first guide rollers GR1, a plurality of roller support units RS, and a plurality of second guides. It may be configured to support the roller GR2.

That is, the movable impression cylinder MIC, the plurality of first guide rollers GR1 , the plurality of roller support units RS, and the plurality of second guide rollers GR2 may be connected to each other through the support plate SP.

Accordingly, when the plurality of lifting hydraulic cylinders LC raise and lower the plurality of second guide rollers GR2, the support plate SP supporting the plurality of second guide rollers GR2 is lifted together, and thus The movable impression cylinder MIC connected to the support plate SP, the plurality of first guide rollers GR1 and the plurality of roller support units RS may also be raised and lowered.

The movable impression cylinder (MIC) is rotatably coupled to the support plate (SP), is disposed opposite to the second blanket cylinder (BC2) with the object (P) interposed therebetween, and is raised by the support plate (SP) to prevent When in contact with the printed material P, it may be configured to press the printed material P toward the second blanket cylinder BC2 while rotating together with the second blanket cylinder BC2.

The plurality of first guide rollers GR1 may be disposed opposite to the front and rear of the movable impression cylinder MIC to guide the movement of the object P.

The plurality of roller support units RS may be rotatably coupled to the support plate SP to support the plurality of first guide rollers GR1 .

Specifically, the plurality of roller support units RS are configured to support the first guide roller GR1 and adjust the tension of the object P supported by the first guide roller GR1 while being extended or contracted. A hydraulic cylinder for tension adjustment (RS1), a part is rotatably coupled to the support plate (SP), and the other part supports the hydraulic cylinder for tension adjustment (RS1), and watches the hydraulic cylinder for tension adjustment (RS1) by a preset angle Alternatively, it may include a rotation motor RS2 for adjusting tension configured to adjust the tension of the object P supported by the first guide roller GR1 while rotating it counterclockwise.

The plurality of second guide rollers GR2 are rotatably coupled to the support plate SP to face the front and rear of the plurality of first guide rollers GR1 , and are relatively relative to the plurality of first guide rollers GR1 . It may be configured to guide the movement of the to-be-printed object (P) in a low position.

The plurality of lifting hydraulic cylinders LC are coupled to the plurality of second guide rollers GR2 and elevate the plurality of second guide rollers GR2 connected to the support plate SP while extending or contracting the plurality of first guide rollers GR2. The to-be-printed object P supported by the guide roller GR1 may be configured to contact or separate the second blanket cylinder BC2 .

Referring to FIG. 1 , the offset printing apparatus 1 includes a drying unit 30 configured to dry the printed area by spraying air on the surface of the to-be-printed object P that has passed through the printing unit 20, A cutting unit 40 configured to cut the printed material P that has passed through the drying unit 30 to a preset size, and a storage unit configured to store the printed material P that has passed through the cutting unit 40 ( 50) may be further included.

Although not shown in the drawing, the drying unit 30 includes an air blower configured to spray air, a compressor configured to adjust the pressure of the sprayed air, and a temperature of ambient air through which the object P passes. It may include a temperature sensor and a temperature control unit configured to cool or heat the air to a set temperature.

5 is a side view schematically showing a cutting part according to an embodiment of the present invention.

Referring to FIG. 5 , the cutting unit 40 may include an alignment unit 41 , a cutting unit 42 , and a plurality of paperweight rollers 43 .

6 is a plan view schematically showing an alignment unit according to an embodiment of the present invention.

Referring to FIGS. 5 and 6 , the alignment unit 41 supports the left and right ends of the to-be-printed object P introduced into the inside through the drying unit 30 to set the center of the printed-object P. It may be configured to align parallel to the moving direction of (P).

The alignment unit 41 includes a first alignment unit 41A configured to elastically support the left end of the object P, and a second alignment unit 41A configured to elastically support the right end of the object P. It may include an alignment unit (41B).

The first alignment unit 41A and the second alignment unit 41B are, respectively, rotated by an alignment motor 411 and an alignment motor 411 configured to generate a rotational force, and having a thread on the inner circumferential surface The adjustment nut 412 and the adjustment nut 412 are screwed to the adjustment nut 412 so as to be movable to the inside of the adjustment nut 412 or the outside of the adjustment nut 412 along the longitudinal direction of the adjustment nut 412, and the outside and the inside The first accommodating space 413A in communication with the first accommodating space 413A and the adjustment bolt 413 in which a second accommodating space 413B having a size different from that of the first accommodating space 413A is formed. , the elastic member 414 accommodated in the second accommodating space 413B, and a portion is accommodated in the adjustment bolt 413 and is elastically supported by the elastic member 414, and the other portion is the adjustment bolt 413. It may include a support plate 415 disposed on the outside of the to-be-printed object (P) is configured to support the end.

Here, the support plate 415 includes a first support part 415A in the form of a flat plate that supports the end of the object P, and the first support portion 415A extending from the end of the first support portion 415A to hold the object P to the first support part ( 415A) of the arc-shaped second support portion 415B, which extends from the first support portion 415A and partially accommodated in the first accommodation space 413A, 415C, and the guide shaft portion 415C It is coupled to the end and disposed in the second accommodating space 413B, is pressed by the elastic member 414, and configured to be caught and supported by the stepped portion between the first accommodating space 413A and the second accommodating space 413B. part 415D.

Referring to FIG. 5 , the cutting unit 42 may be disposed on the upper side of the to-be-printed object P, and may be configured to continuously cut the to-be-printed object P moving in one direction.

7 is a schematic side view of a cutting unit according to an embodiment of the present invention.

Referring to FIG. 7 , the cutting unit 42 includes a cam unit 421 and a cutter 422 configured to continuously cut an object P by being repeatedly pressed by the cam unit 421, and a cutter ( The guide member 423 is configured to support the outer surface of the cutter 422 to guide the movement direction of the cutter 422 , and is accommodated in the guide member 423 to elastically support the cutter 422 , and the cutter 422 . ) may include an elastic restoring member 424 configured to return the cutter 422 to its original position by applying a reaction force to the cutter 422 when the to-be-printed object P is cut.

Here, the cam unit 421 includes a driving motor 421A configured to generate a rotational force, and an elliptical structure, configured to sequentially press and release the cutter 422 while being rotated by the driving motor 421A. It may include a cam member 421B. And, the cutter 422 is supported by the guide member 423 and coupled to the main body 422A pressed by the cam member 421B, and the end of the main body 422A to cut the to-be-printed object P The blade 422B and the support wings 422C accommodated inside the guide member 423 and elastically supported by the elastic restoring member 424 may be included.

5, the plurality of paperweight rollers 43 are disposed at the front and rear of the cutting unit 42, and are rotated in contact with the upper and lower surfaces of the object P to transport the object P. can

Each paperweight roller 43 may include an upper roller rotated in contact with the upper surface of the object P, and a lower roller rotated in contact with the lower surface of the object P.

As described above, according to the embodiment of the present invention, since it is possible to print on the object P in four or more different colors, various color tones can be expressed, and accurate color expression is possible even when high saturation or brightness is required. .

In addition, since the additional printing process for color correction is omitted, it is possible to perform a quick operation, thereby improving work efficiency and productivity, as well as reducing manufacturing costs.

In addition, since the color to be printed on the object P can be selectively applied according to the set printing purpose, various types of printing are possible, thereby maximizing the utility.

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

1. Offset printing device
10. Supply
20. Print Department
21. First printing unit
22. Second printing unit
23. 3rd printing unit
24. 4th printing unit
25. Fifth printing unit
26. 6th printing unit
PC1. first plate cylinder
BC1. 1st blanket cylinder
IC. impression cylinder
PC2. 2nd plate cylinder
BC2. 2nd blanket cylinder
27. First printing auxiliary unit
28. Second printing auxiliary unit
29. Third printing auxiliary unit
SP. support plate
MIC. movable impression cylinder
GR1. a plurality of first guide rollers
RS. Multiple Roller Support Units
RS1. Hydraulic cylinder for tension control
RS2. rotation motor for tension control
GR2. a plurality of second guide rollers
LC. Multiple lifting hydraulic cylinders
30. Dryer
40. Cutting
41. Alignment unit
41A. first alignment unit
41B. second alignment unit
411. Motor for alignment
412. Adjustment nut
413. Adjustment bolt
413A. first accommodation space
413B. 2nd accommodation space
414. Elastic member
415. Support plate
415A. first support
415B. second support
415C. guide shaft
415D. jam part
42. Cutting unit
421. Cam unit
421A. drive motor
421B. no cam
422. Cutter
422A. main body
422B. blade
422C. support wing
423. Guide member
424. Elastic restoring member
43. Multiple Paperweight Rollers
50. Reservoir
P. Printed matter

Claims (3)

a supply unit having a printed object wound thereon and configured to unwind the wound to-be-printed object; and
a printing unit configured to perform printing step by step on the to-be-printed material unwound from the supply unit;
The printing unit is configured to print six different colors on the to-be-printed object,
The printing unit is configured to selectively print three colors out of the six different colors on the to-be-printed object,
The printing unit,
a first printing unit disposed in front of the supply unit along the moving direction of the to-be-printed object and configured to print a first color on the to-be-printed object;
a second printing unit disposed in front of the first printing unit along a moving direction of the object and configured to print a second color different from the first color on the object;
a third printing unit disposed in front of the second printing unit along a moving direction of the object and configured to print the first color and a third color different from the second color on the object;
A fourth print disposed in front of the third printing unit along the moving direction of the object and configured to print the first color, the second color, and a fourth color different from the third color on the object unit;
disposed in front of the fourth printing unit along the moving direction of the object to print the first color, the second color, the third color, and a fifth color different from the fourth color a fifth printing unit configured;
The first color, the second color, the third color, the fourth color, and the fifth color are different from the first color, the second color, and the fifth color disposed in front of the fifth printing unit along the moving direction of the object a sixth printing unit configured to print 6 colors;
a first printing auxiliary unit disposed below the second printing unit and configured to selectively contact the object to be printed on the second printing unit;
a second printing auxiliary unit disposed below the fourth printing unit and configured to selectively contact the object to be printed on the fourth printing unit; and
a third printing auxiliary unit disposed below the sixth printing unit and configured to selectively contact the object to be printed on the sixth printing unit; and
The first printing unit, the third printing unit and the fifth printing unit,
a first plate cylinder to which water and ink are supplied;
a first blanket cylinder rotated between the first plate cylinder and the object to transfer the ink transferred by the first plate cylinder to the object; and
an impression cylinder disposed opposite the first blanket cylinder with the object interposed therebetween and configured to press the object toward the first blanket cylinder while rotating together with the first blanket cylinder; and
The second printing unit, the fourth printing unit, and the sixth printing unit,
a second plate cylinder to which water and ink are supplied; and
a second blanket cylinder rotated between the second plate cylinder and the object to be printed, and transferring the ink transferred by the second plate cylinder to the object; and
The first auxiliary printing unit, the second printing auxiliary unit, and the third printing auxiliary unit,
support plate;
It is rotatably coupled to the support plate, disposed opposite to the second blanket cylinder with the object interposed therebetween, and is raised by the support plate and rotates together with the second blanket cylinder when it comes into contact with the object to be printed. a movable impression cylinder configured to press the object toward the second blanket cylinder;
a plurality of first guide rollers disposed opposite to the front and rear of the movable impression cylinder and configured to guide the movement of the printed object;
a plurality of roller support units rotatably coupled to the support plate to support the plurality of first guide rollers;
A plurality of rotatably coupled to the support plate is disposed opposite to the front and rear of the plurality of first guide rollers, and configured to guide the movement of the printed object at a position relatively lower than that of the plurality of first guide rollers. a second guide roller; and
The plurality of second guide rollers coupled to the plurality of second guide rollers and extended or contracted to elevate the plurality of second guide rollers connected to the support plate to transfer the to-be-printed objects supported by the plurality of first guide rollers to the second blanket cylinder. A plurality of lifting hydraulic cylinders configured to contact or separate; including,
The plurality of roller support units,
a hydraulic cylinder for tension adjustment configured to support the first guide roller and adjust the tension of the printed object supported on the first guide roller while extending or contracting; and
A part is rotatably coupled to the support plate, and the other part supports the hydraulic cylinder for adjusting the tension, and is supported on the first guide roller while rotating the hydraulic cylinder for adjusting the tension in a clockwise or counterclockwise direction by a preset angle. An offset printing apparatus comprising a; a rotation motor for adjusting the tension configured to adjust the tension of the to-be-printed object.

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