TWI383895B - A lithographic printing apparatus and method for reaching a printing surface with different graphic sizes - Google Patents

Description

Lithographic printing device and method for achieving different printing surfaces by different graphic range sizes

The present invention relates to a lithographic apparatus and method, and more particularly to a lithographic apparatus and method for achieving a continuous printing surface in a range of different graphic sizes on a printing plate.

At present, almost all the goods sold on the market are affixed with the brand label printed by the printing machine or the sticker of the product label and description. When the printing machine prints the above-mentioned sticker, it will also be made according to the size of the product and the customer's demand. However, the lithographic plate has a certain size. When the plate is made according to different product sizes or different customer requirements, it often happens that the layout of the layout is small. If it is still to be printed on the same printing machine, due to the printing machine Both the diameter of the plate and the diameter of the printing roll have a fixed size; therefore, when the extent of the graphic to be printed on the lithographic plate is less than the circumference of the plate, the length is less than the circumference of the plate, the lithographic plate The blanket fed to the printing roller causes a blank section of ink-free blank. The blanket then transfers the ink to the object to be printed continuously on the entire surface, which also produces a period of time. A blank section without ink (that is, a "continuous printing surface" cannot be achieved), resulting in an increase in the waste of the object to be printed, that is, the ink of each graphic range on the object to be printed and the next graphic The pitch of ink (blank portion) is greater than or equal to 3mm.

In addition, since the current lithographic fixing method is mostly as in the prior art of US Pat. No. 2,070, 027, 375, A1, the two ends of the lithographic plate are respectively clamped by a round rod provided with a nip, and then inserted into a groove formed on the circumferential surface of the plate. To fix the groove; in order to make the round bar clamp the ends of the plate, the groove can be easily inserted into the groove of the plate, so the gap formed by the groove on the circumferential surface of the plate is larger, so when the plate is持续When the lithographic plate is continuously rotated and printed by the whole tread, the stencil will cause the blanket to continue to create a blank segment with no ink (that is, the "continuous printing surface" cannot be achieved). When the ink is continuously transferred to the object to be printed on the entire surface, a blank section of waste material is also generated, that is, the ink distance of each image range on the printed matter and the ink range of the next image range ( Blank segment) is greater than or equal to 3mm.

The problem of the blank segment waste generated as described above is improved by the prior art as disclosed in the TWI304770 patent publication; the disclosed technical means is according to the size of the graphic range (ie, the layout) which is more frequently designed by the user on the layout. The length of the graphic range relative to the circumference of the plate), several different lithographic lengths are determined, and then the plate cylinders corresponding to the circumference are manufactured according to the lengths (as defined in the present invention). ") and the transfer roller (same as the "printing tumbler" defined in the present invention), if the range of images to be printed is small, the user can first select a lithographic plate that is more in line with the scope of the image. Then, the plate cylinder and the transfer roller which can correspond to the lithographic length can be replaced with the printing machine; similarly, if the range of the graphic to be printed is large, the user can select one more. The lithographic range of this graphic range, and the plate cylinder and the transfer roller corresponding to the lithographic length can be replaced with the printing machine; if so, the size can be adapted to the lithographic range of the graphic range, in the plate cylinder and the Transfer roller When the wheel surface printing, to reduce their empty segment (that is, more likely to reach "continue printing surface"). However, as can be seen from the foregoing, the prior art still has its missing defects to be improved; the missing is that when the lithographic plate of different graphic size ranges on the printing plate is printed, the prior art must first replace the printing plate whose circumferential dimension is suitable for the length of the lithographic printing plate. With the printing tumbler, if the side can reduce the waste of the blank section in the whole tread printing, the user not only has to pay for the different sizes of the printing plate and the printing tumbler, but also has to make more space to store. Different sizes of prints and printing rolls waste more time for users to change the size and printing of different sizes.

Therefore, the main object of the present invention is to enable the continuous feeding of the object to be printed by the same lithographic printing apparatus according to the different size of the graphic surface on the layout, and to select the full-surface printing or to select the space-based tread printing. In order to achieve the purpose of successive printing surfaces; not only can save the cost of blank section scrap caused by the existing printing press, but also save consumers the cost and storage space for purchasing different sizes of printing plates or printing gongs. It saves time for the user to change the plate or print the tumble.

In order to achieve the above object, the present invention provides a lithographic printing apparatus which is adapted to achieve a continuous printing surface with different image sizes on a printing plate; characterized in that the lithographic printing apparatus comprises a continuous printing object to be printed from the feeding end and then printed. a printing machine that is driven to the discharge end at a constant speed, a first guiding structure disposed on the guiding end of the feeding end for the constant velocity guiding material, and a guiding path disposed on the discharging end for the same a second guiding structure of the constant velocity guiding material of the first guiding structure, the printing machine comprises an ink supply unit; an ink transfer unit pivoted under the ink supply unit and in contact with the ink supply unit; a plate that is pivotally disposed on the ink delivery path of the ink transfer unit, the circumferential surface of the plate is completely provided with a lithographic plate in contact with the ink transfer unit; and a printing roller pivoted on the lithographic ink transfer path, the printing a blanket on the circumference of the roll for transferring ink to the print to be printed, and the lithographic plate is in contact with the blanket; wherein the length of the blanket surface relative to the circumference of the printing roll, Equal to or greater than the flat a length of the graphic surface relative to the circumference of the printing plate; and a pressure pivoted below the printing roller and carrying the printing pressure of the blanket; and the first guiding structure includes a selectable continuous positive Turning or interacting positively and reversingly to actively drive the front end control guide wheel of the to-be-printed object; the second guiding structure includes a rear end control guide wheel that can synchronize with the front end control guide wheel and actively drive the to-be-printed object in the same direction.

In order to achieve the above object, the present invention further provides a method for achieving a continuous printing surface by using different image sizes on a layout, the method comprising:

Providing a printing machine for continuously feeding a workpiece to be printed from a feeding end and discharging it to a discharge end, the printing machine comprising an ink supply unit; a pivoting member below the ink supply unit and in contact with the ink supply unit An ink transfer unit; a plate pivotally disposed on the ink transfer path of the ink transfer unit, wherein the circumferential surface of the plate is completely provided with a lithographic plate in contact with the ink transfer unit; and a printing pivoted on the lithographic ink transfer path Rolling, a blanket on the circumferential surface of the printing roll for transferring ink to the printed matter, and the lithographic plate is in contact with the blanket; wherein the blanket surface is opposite to the circumference of the printing roll The length occupied by the length of the graphic surface of the lithographic layout relative to the circumference of the stencil; and a pressure pivoted under the printing turret and carrying the printing pressure of the blanket;

Providing a first guiding structure for guiding the guiding material on the guiding end of the feeding end, the first guiding structure comprises a front end control capable of positively or reversing to actively drive the forward or backward movement of the to-be-printed object Guide wheel

Providing a second guiding structure disposed on the guiding end of the discharging end for isolating the material with the first guiding structure (11), the second guiding structure comprises a forward or reverse rotation The front end control guide wheel synchronously drives the rear end control guide wheel that advances or retreats the to-be-printed object;

When the length of the graphic surface relative to the circumference of the printing plate is equal to the circumferential length of the printing plate, the length of the blanket surface relative to the circumference of the printing roller is equal to the range of the graphic surface of the printing plate. The length of the circumference of the plate, and the rubber cloth is completely glued to the circumferential surface of the printing roller, and the front control guide wheel and the rear control guide wheel are continuously synchronized to rotate the belt to be printed, and the printing is performed. The fully glued blanket on the circumference of the roll is used to achieve the continuous printing surface with full tread printing;

When the length of the graphic surface relative to the circumference of the printing plate is less than the circumferential length of the printing plate, the length of the blanket cloth surface relative to the circumference of the printing roller is equal to or greater than the graphic length of the printing plate surface. The length of the range relative to the circumference of the plate, and the blanket is glued to the circumferential surface of the printing roll to form an interval for the workpiece to be pulled back and displaced, and the front end control wheel and the rear end Controlling the synchronous rotation of the guide wheel to drive the distance forward of the to-be-printed object, and setting the same length as the blanket cloth surface with respect to the circumference of the printing roller;

When the printing roller is rotated relative to the pressure to the interval, the front end control guide wheel and the rear end control guide wheel are set to immediately reverse the rotation to drive the object to be printed backward, until the last printed ink on the object to be printed The end is closest to the compression level tangent point; and,

Immediately redoing the above, the forward control guide wheel and the rear end control guide wheel are synchronously rotated to drive the distance forward of the to-be-printed object, and set to be the same length as the blanket cloth surface with respect to the circumference of the printing roller; The workpiece to be printed can be continuously introduced by the front end control guide wheel and the rear end control guide wheel to drive the object to be printed, and the rubber sheet with the gap glued on the circumference of the printing roller The purpose of the continuous printing surface is achieved by spacer tread printing.

According to the technical solution proposed by the present invention, the present invention substantially achieves the following beneficial effects compared to the prior art lithographic printing apparatus and the printing method thereof:

1. Since the lithographic plate of the present invention is completely wrapped on the circumferential surface of the plate and the blanket is fixed by gluing, it can be completely glued to the circumferential surface of the printing roller to be printed on the entire surface of the roll, or can be partially glued only. Printing the circumferential surface of the tumbler to print with a spacer tread, and the ink of each graphic range on the printed matter can reach the ink spacing (blank segment) of the range of the next image is less than or equal to 2 mm, so the lithographic plate of the invention The printing equipment and method can select the full-rotation printing with continuous forward rotation or the interval-type tread printing with positive and reverse interlacing on the same printing machine according to the different graphic range of the printing plate to achieve the purpose of connecting the printing surface. ;
2. When the user needs to change the lithographic plate due to the change of the size of the graphic range on the layout, the lithographic printing apparatus and method of the present invention can use the same printing plate on the same printing machine and the same printing roller to achieve the printing surface to be printed, not only the printing surface, but also the printing surface. It can save the cost of producing blank scraps, and save the cost of purchasing other different sizes or printing rollers; users can also save space for storing other different sizes or printing rollers; Change the time for different sizes or prints.

The detailed description and technical contents of the present invention will now be described as follows:

First, please refer to FIG. 1 for a schematic plan view of a preferred embodiment of the present invention. In order to give the reader a clearer understanding of the present invention, the lithographic plate 41 and the blanket 51 are intentionally thickened for illustration. As shown in the figure, the present invention provides a lithographic printing apparatus which is adapted to achieve a continuous printing surface with different image sizes on the layout; the lithographic printing apparatus 1 includes a continuous printing object 90 to be printed from the feeding end 91 and then printed. a printing machine 10 that is driven to the discharge end 92 at a constant speed, a first guiding structure 11 for guiding the material at a feeding path of the feeding end 91, and a guiding material disposed at the discharging end 92. a second guide structure 12 for guiding the material at a constant velocity with the first guiding structure 11; the printing machine 10 includes an ink supply unit 20, wherein at least one ink is disposed under the ink supply unit 20 a knife 22 (the squeegee 22 is not necessarily present); an ink transfer unit 30 pivoted under the ink supply unit 20 and in contact with the ink supply unit 20, the ink transfer unit 30 includes a pivoting a mesh wheel 31 below the ink unit 20 and in contact with the ink supply unit 20, and a platen roller 32 pivotally disposed on the ink path of the mesh wheel 31 and in contact with the mesh wheel 31; and the plate 40 Then pivoted on the ink path of the offset ink roller 32 and in contact with the ink roller 32; a pivoting on the ink transfer a plate 40 of the ink path of the element 30, the circumferential surface of the plate 40 is completely provided with a lithographic plate 41 in contact with the ink transfer unit 30, and the lithographic plate 41 may be wet or dry; a peripheral wetting unit 80 having a dampening fluid 82 that can be controlled to be in contact with the lithographic plate 41. When the lithographic plate 41 is wet, the dampening fluid 82 is controlled to be in phase with the lithographic plate 41. Contacting, and when the lithographic plate 41 is dry, the dampening fluid 82 is controlled to be spaced apart from the lithographic plate 41 (in this figure, the relative position of the dampening unit 80 and the lithographic plate 41 is adjusted to achieve The dampening unit 80 can also be used to control the sprayer to spray or not; a printing tumbler 50 pivotally disposed on the ink path of the lithographic plate 41, and a circumferential surface of the printing tumbler 50 is glued to The ink 21 is transferred to the blanket 51 to be printed on the printed matter 90, and the lithographic plate 41 is in contact with the blanket 51; wherein the length of the blanket 51 relative to the circumference of the printing roller 50 is equal to or greater than The length of the graphic surface of the lithograph 41 relative to the circumference of the stencil 40; and, a pivot The pressure roller 60 is under the printing roller 50 and carries the printing pressure of the blanket 51; and the first guiding structure 11 includes a front end control guide wheel that can selectively drive the positive or reverse positive and reverse rotation to actively drive the object to be printed 90. 111, and a first tension balance member 112 that can displace the to-be-printed object 90 to maintain a fixed tension; the second guide structure 12 includes a second guide structure that can be synchronized with the front end control guide wheel 111 and actively drive the object to be printed 90 The rear end control guide wheel 121, and a second tension balance member 122 that can be reversely displaced corresponding to the first tension balance member 112 to maintain the fixed tension of the object to be printed 90.

Please also refer to FIG. 2-1 to FIG. 2-4 for an enlarged plan view of the fixing manner of the lithographic plate on the plate in FIG. 1 of the present invention. In order to give the reader a clearer understanding of the present invention, the lithograph 41 is intentionally thickened to indicate. First, as shown in Fig. 2-1, it can be clearly seen that the plate 40 is near a circumference and is provided with a positioning member 42 having a cylindrical shape and at least as long as the plate 40, that is, the positioning. The member 42 is disposed in the plate 40 and adjacent to the circumference of the plate 40, and a groove 43 is formed on the circumferential surface of the plate 40, and the groove 43 has a pitch equal to two of the thickness of the plate 41. The positioning member 42 also has a positioning groove 421 opposite to the groove 43, and the spacing of the positioning groove 421 is also about twice the thickness of the lithography plate 41; see "Figure 2-2" The first locating end 411 and the second locating end 412 are formed by folding the two ends of the lithographic plate 41 into a substantially right angle, and then the first positioning end 411 is passed through the groove. The plate 40 is inserted into the positioning groove 421 of the positioning member 42 to wind the lithographic plate 41 around the cylindrical surface of the plate 40, and then the second positioning end 412 is also inserted through the groove 43. The plate 40 is also shown in the positioning groove 421 of the positioning member 42 as shown in FIG. 2-3. Finally, the cylinder of the positioning member 42 is taken as the axis, and the force is smooth. Rotating (also counterclockwise) the positioning member 42. At this time, since the label 40 is not driven, the first positioning end 411 and the second positioning end 412 can be rotated after the positioning member 42 is rotated. The plate 40 which is fixed at the same time and the positioning member 42 which is rotating form a deformation as shown in "FIG. 2-4". Since the lithographic plate 41 is made of a metal material, after being deformed by the deformation, it is permanently deformed. The positioning member 42 is thus pressed and fixed, for example, the lithographic plate 41 is fixedly mounted on the circumferential surface (full tread) of the plate 40 in a complete (full-face) manner, and the lithographic plate 41 is packaged in the plate. After the 40th circumferential surface, the gap formed between the two ends will be less than or equal to 2mm, that is to say, when there is a graphic range on the whole plate surface, the ink spacing (blank segment) after full wheel surface printing is the same. Will be less than or equal to 2mm.

Please also refer to FIG. 1 and FIG. 3-1 to FIG. 3-3 for a schematic plan view of a preferred embodiment of the present invention. In order to give the reader a clearer understanding of the present invention, the lithographic plate 41 and the blanket 51 are intentionally thickened for illustration. First, as shown in Fig. 1, since the printing plate 10 of the present invention 10 and the circumferential length of the printing roller 50 are designed to be equivalent to the length of the industry's largest lithographic film 41, and the printing plate 40 and the printing roller The crucible 50 is designed to be fixed in a single size; in more detail, after the lithography 41 is completely packaged on the magazine 40, the length of the lithograph 41 layout relative to the circumference of the magazine 40 is The circumferential length of the plate 40 is equal; however, the size of the graphic after etching the graphic on the surface of the plate 41 is longer than the circumference of the plate 40, and may be equal to or smaller than the circumference of the plate 40; therefore, the The cloth surface length of the blanket 51 must be equal to or greater than the range of the graphic surface of the lithographic plate 41, so that all the inks in the graphic range can be completely covered, and the length of the blanket 51 is equal to or less than the length of the cloth. The printing roll 50 is circumferentially long, but if the length of the blanket 51 is less than the circumference of the printing roll 50, the length of the cloth 51 is as small as at least the printing roll 50 and the pressure. After the 胴60 is relatively rotated, the to-be-printed matter 90 can be pulled The interval 52 for rearward displacement is formed; of course, since the printing roller 50 and the pressure roller 60 are constantly rotated relative to each other, if the interval 52 is larger, it indicates that the object to be printed 90 is pulled backward and displaced. The time is more abundant, but if the interval 52 is smaller, it means that the time for the to-be-printed object 90 to be pulled backward is shortened, and then we can speed up the speed at which the object to be printed 90 is pulled backward. When the dampening unit 80 is partially immersed in the dampening liquid 82 in the liquid storage tank 81, and the ink supply unit 20 has the ink 21 therein, after the printing machine 10 is started, at this time, since the dampening unit 80 has The dampening liquid 82 in the liquid storage tank 81 is brought to the entire circumferential cylinder surface of the dampening unit 80, and the dampening liquid 82 is wetted by the wet lithography plate 41 on the partial circumferential surface of the plate 40, due to clockwise Continuously rotating to bring to the non-image range of the lithographic plate 41 (i.e., the non-image range after the lithographic pattern 41 is etched, the non-image range of the lithographic pattern after etching the image is a positive lithography For example, if it is a female lithographic plate, the opposite is true; however, the ink 21 flows through the gap between the squeegee 22 and the mesh wheel 31, and flows to the mesh wheel 31 which is continuously rotating clockwise and spreads the entire The circumferential cylinder surface, at this time, the ink distribution wheel set 70 in contact with the mesh wheel 31 also functions to smooth the ink 21 on the circumferential cylinder surface of the mesh wheel 31, and then the ink 21 is self-contained. The mesh wheel 31 is brought to the entire circumferential cylinder surface of the offset ink roller 32 continuously rotating counterclockwise; then the ink roller 32 is rounded The ink 21 on the cylinder surface is continuously rotated clockwise to the extent of the lithographic pattern 41 repelled by the dampening fluid 82 due to contact with the lithographic plate 41 on the plate 40 (i.e., the lithographic plate) 41 After the image is etched, the range of the oleophilic image after the lithographic image is etched is a positive lithography, for example, a negative lithography. As shown in FIG. 3-1, when the length of the graphic surface of the lithographic plate 41 relative to the circumference of the printing plate 40 is less than the circumferential length of the printing plate 40, the blanket 51 is coated with respect to the printing roller. The length of the circumference of 50 is equal to or greater than the length of the graphic surface of the lithographic plate 41 relative to the circumference of the printing plate 40, and the blanket 51 is glued to the circumferential surface of the printing roller 50 to form a 90 to be printed. The interval 52, which can be pulled backward, is set, and the first tension balance member 112 is immediately synchronized with the second tension balance member 122 to return to the initial position, and the front end control guide wheel 111 is synchronized with the rear end control guide wheel 121. The distance forwarded by the forward rotation of the to-be-printed object 90 is set to be the same as the length of the blanket 51 relative to the circumference of the printing roller 50; then the ink 21 in the graphic range of the lithography 41 can pass through the The blanket 51 glued on the circumferential surface of the printing roller 50 is continuously rotated counterclockwise and transmitted to the object to be printed 90 above the pressure roller 60; at this time, the front end control guide wheel 111 and the rear end control guide wheel 121 are Synchronous forward rotation drives the object to be printed 90 The forward distance is the same as the length of the blanket 51, and the position of the first tension balance member 112 and the second tension balance member 122 is an initial position as shown in FIG. 3-1; The length of the blanket 51 glued on the circumferential surface is smaller than the circumference of the printing roller 50. When the printing roller 50 is rotated relative to the pressure 60 to the interval 52, the front control guide 111 and the front end are controlled. The rear end control guide wheel 121 is set to immediately reverse the rotation to drive the object to be printed 90 to retreat until the end of the last printed ink 21 on the object to be printed 90 is closest to the horizontal cut point of the pressure line 60 as shown by "3-2"; The front end control guide wheel 111 and the rear end control guide wheel 121 synchronously reverse the distance that the object to be printed 90 is retracted, and the distance obtained by adding the distance from the feeding end 91 to the object to be printed 90 is averaged, and the average distance is set. Maintaining a distance displaced by the fixed tension of the object to be printed 90 for the first tension balance member 112; and reversing the distance between the front end control guide wheel 111 and the rear end control guide wheel 121 to retreat the object to be printed 90, and The discharge end 92 is at a constant speed The distance obtained by adding the distances of the objects to be printed 90 is averaged, and the distance that the second tension balance member 122 is displaced relative to the first tension balance member 112 to maintain the fixed tension of the object to be printed 90 is set; therefore, the distance The first tension balance member 112 is downwardly displaced to balance the tension, and the second tension balance member 122 is upwardly displaced corresponding to the first tension balance member 112 to balance the tension as shown in "3-2". Then, the front end control guide wheel 111 and the rear end control guide wheel 121 are synchronously rotated to drive the distance forward of the to-be-printed object 90, and are set to face the printing roll 50 with the blanket 51. The length occupied by the circumference is the same, and the first tension balance member 112 and the second tension balance member 122 are immediately returned to the initial position as shown in "3-3"; if the print object 90 is continuously introduced, the The front end control guide wheel 111 and the rear end control guide wheel 121 are continuously synchronized, reversely staggered to drive the object to be printed 90, and the rubber sheet 51 glued by the space 52 on the circumferential surface of the printing roller 50 is provided with a spacer tread. Printing reached Continue the purpose of printing.

It can be seen from the above that when the length of the graphic surface of the lithographic plate 41 relative to the circumference of the printing plate 40 is equal to the circumferential length of the printing plate 40, the cloth surface of the blanket 51 is occupied with respect to the circumference of the printing roller 50. The length of the lithographic plate 41 is equal to the length of the circumference of the plate 40, and the blanket 51 is completely glued to the circumferential surface of the printing roller 50, and the front control guide wheel 111 and the rear end are set. The control guide wheel 121 continuously synchronizes the forward rotation to drive the object to be printed 90, and through the fully glued blanket 51 on the circumferential surface of the printing roller 50, the entire printing surface is achieved by the full tread printing.

Of course, if the lithographic plate 41 is changed to a dry type, the lithographic plate 41 can be directly inked without using the dampening solution 82 to separate the ink 21; since the dampening unit 80 has a controllable contact with the lithographic plate 42 or not. Since the dampening liquid 82 is controlled so that the dampening liquid 82 of the dampening unit 80 is spaced apart from the lithographic plate 42, the lithographic film 41 can achieve the purpose of successively printing the surface as described above.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent variation and modification of the scope of the patent application of the present invention should still belong to the present invention. The scope of coverage.

1‧‧‧Printing equipment

10‧‧‧Printer

11‧‧‧First guide structure

111‧‧‧ front control guide wheel

112‧‧‧First tension balancer

12‧‧‧Second guide structure

121‧‧‧Back control guide wheel

122‧‧‧Second tension balance

20‧‧‧Ink supply unit

21‧‧‧Ink

22‧‧‧Scratch knife

30‧‧‧Ink transfer unit

31‧‧‧Net wheel

32‧‧‧ by ink roller

40‧‧‧ Copyright

41‧‧ lithograph

411‧‧‧First positioning end

412‧‧‧Second positioning end

42‧‧‧ Positioning parts

421‧‧‧ positioning slot

43‧‧‧ trench

50‧‧‧Printing roll

51‧‧‧ blanket

52‧‧‧ interval

60‧‧‧ Pressure

70‧‧‧Fixed wheel set

80‧‧‧ Wetting unit

81‧‧‧ liquid storage tank

82‧‧‧ Wetting fluid

90‧‧‧Printing matter

91‧‧‧ Feeding end

92‧‧‧ discharge end

Figure 1 is a plan view of a preferred embodiment of the present invention.

2-1 to 2-4 are enlarged plan views showing the manner of fixing the lithographic plate on the plate in the "Fig. 1" of the present invention.

3-1 to 3-3 are partial plan views showing the continuous operation of "Fig. 1" of the present invention.

1‧‧ lithographic equipment

10‧‧‧Printer

11‧‧‧First guide structure

111‧‧‧ front control guide wheel

112‧‧‧First tension balancer

12‧‧‧Second guide structure

121‧‧‧Back control guide wheel

122‧‧‧Second tension balance

20‧‧‧Ink supply unit

21‧‧‧Ink

22‧‧‧Scratch knife

30‧‧‧Ink transfer unit

31‧‧‧Net wheel

32‧‧‧ by ink roller

40‧‧‧ Copyright

41‧‧ lithograph

42‧‧‧ Positioning parts

50‧‧‧Printing roll

51‧‧‧ blanket

52‧‧‧ interval

60‧‧‧ Pressure

70‧‧‧Fixed wheel set

80‧‧‧ Wetting unit

81‧‧‧ liquid storage tank

82‧‧‧ Wetting fluid

90‧‧‧Printing matter

91‧‧‧ Feeding end

92‧‧‧ discharge end

Claims (10)

A lithographic printing apparatus for achieving a continuous printing surface with different graphic range sizes on a layout;
The lithographic apparatus (1) includes a printing machine (10) for introducing a continuous object to be printed (90) from the feeding end (91) into the printing and is output to the discharging end (92) at a constant speed, a first guiding structure (11) for guiding the constant velocity guide on the feeding end of the feeding end (91), and a guiding path disposed on the discharging end (92) for the first guiding material Structure (11) a second guide structure (12) of a constant velocity guide, the printing machine (10) comprising an ink supply unit (20); a pivoting unit under the ink supply unit (20) An ink transfer unit (30) contacting the ink supply unit (20); a plate (40) pivotally disposed on the ink transfer path of the ink transfer unit (30), the circumferential surface of the plate (40) is completely provided with a a lithographic plate (41) contacting the ink transfer unit (30); a printing roller (50) pivotally disposed on the ink path of the lithographic plate (41), and a printing surface of the printing roller (50) is glued to Passing the ink (21) to the blanket (51) on the print (90), and the lithographic plate (41) is in contact with the blanket (51); wherein the blanket (51) is opposite to the blanket The length of the circumference of the printing tumbler (50) is equal to or greater than the graphic on the lithographic (41) layout a length that occupies the circumference of the plate (40); and a pressure (60) pivoted below the printing roller (50) and carrying the printing pressure of the blanket (51); and the first guide The material structure (11) includes a front end control guide wheel (111) having a selectable continuous forward rotation or alternating positive and reverse rotation to actively drive the object to be printed (90); the second guide structure (12) includes a front end The control guide wheel (111) synchronizes and actively drives the rear end control guide wheel (121) of the to-be-printed object (90). A lithographic apparatus for achieving a continuous printing surface, such as a size of a different layout on the applicable layout as described in claim 1, wherein the lithographic plate (41) is wet; and the printing machine (10) further includes a pivoting a wetting unit (80) surrounding the plate (40), the wetting unit (80) having a dampening fluid (82) that can be controlled to be in contact with the lithographic plate (41), and the dampening fluid (82) ) is in contact with the lithographic plate (41). A lithographic apparatus for achieving a continuous printing surface according to the size of the different layouts of the applicable layout described in claim 2, wherein the ink transfer unit (30) includes a pivoting unit under the ink supply unit (20) and a mesh wheel (31) that is in contact with the ink supply unit (20), and an offset ink roller (32) pivotally disposed on the mesh wheel (31) and in contact with the mesh wheel (31); The plate (40) is pivoted to the ink path of the platen roller (32) and is in contact with the plate roller (32). A lithographic apparatus for achieving a continuous printing surface according to the size of a different layout on the applicable layout described in the first aspect of the patent application, wherein the lithographic plate (41) is dry; and the printing machine (10) further includes a pivoting device a wetting unit (80) around the plate (40), the wetting unit (80) having a wetting fluid (82) that can be controlled to be in contact with the lithographic plate (41), and the dampening solution (82) It is spaced apart from the lithographic plate (41). A lithographic printing apparatus which achieves a continuous printing surface according to the size of different graphic areas on the applicable layout as described in claim 4, wherein the ink transfer unit (30) includes a pivoting unit under the ink supply unit (20) and a mesh wheel (31) that is in contact with the ink supply unit (20), and an offset ink roller (32) pivotally disposed on the mesh wheel (31) and in contact with the mesh wheel (31); The plate (40) is pivoted to the ink path of the platen roller (32) and is in contact with the plate roller (32). A lithographic apparatus for achieving a continuous printing surface according to the size of different graphic areas on the applicable layout as described in claim 1, 2, 3, 4 or 5, wherein the first guiding structure (11) further comprises a movable a first tension balance member (112) for maintaining a fixed tension of the object to be printed (90); and the second guide structure (12) further comprising a reverse direction corresponding to the first tension balance member (112) A second tension balance member (122) that maintains the fixed position of the object to be printed (90). A method for achieving a continuous printing surface by using different graphic range sizes on a layout, the method comprising:
Providing a printing machine (10) for continuously feeding a workpiece (90) to be printed from a feeding end (91) and discharging it to a discharge end (92), the printing machine (10) comprising an ink supply unit (20) An ink transfer unit (30) pivoted under the ink supply unit (20) and in contact with the ink supply unit (20); a plate pivoted to the ink transfer path of the ink transfer unit (30) 40), the circumferential surface of the plate (40) is completely provided with a lithographic plate (41) in contact with the ink transfer unit (30); a printing roller pivoted on the ink path of the lithographic plate (41) (50) And a blanket (51) for transferring the ink (21) to the printed matter (90), and the lithographic plate (41) and the blanket (51) are glued on the circumferential surface of the printing roller (50). Contacting; wherein the length of the blanket (51) fabric relative to the circumference of the printing rim (50) is equal to or greater than the extent of the lithographic (41) layout relative to the circumference of the stencil (40) a length; and a pressure (60) pivoted under the printing roller (50) and carrying the printing pressure of the blanket (51);
Providing a first guiding structure (11) disposed on the guiding path of the feeding end (91) for constant speed guiding, the first guiding structure (11) includes a forward or reverse rotation to actively drive The front end control guide wheel (111) of the to-be-printed matter (90) advancing or retreating;
Providing a second guide structure (12) disposed on the guide path of the discharge end (92) for constant velocity guiding with the first guide structure (11), the second guide structure (12) The utility model comprises a rear end control guide wheel (121) which can be forwardly or reversely synchronized with the front end control guide wheel (111) to actively drive the workpiece (90) to advance or retreat;
When the length of the graphic surface of the lithographic plate (41) relative to the circumference of the printing plate (40) is equal to the circumferential length of the printing plate (40), the blanket (51) is placed opposite to the printing roller (50). The circumference occupies a length equal to the length of the graphic surface of the lithographic plate (41) relative to the circumference of the plate (40), and the blanket (51) is completely glued to the circumferential surface of the printing roller (50) And setting the front end control guide wheel (111) and the rear end control guide wheel (121) to continuously rotate forwardly to drive the object to be printed (90), and pass the completely glued blanket on the circumferential surface of the printing tumbler (50) ( 51) achieving the purpose of successive printing surfaces by full-rotation printing;
When the length of the graphic surface of the lithographic plate (41) relative to the circumference of the plate (40) is less than the circumferential length of the plate (40), the blanket (51) is placed opposite to the printing roller (50). The circumference occupies a length equal to or greater than the length of the graphic range of the lithographic (41) layout relative to the circumference of the stencil (40), and the blanket (51) is glued to the circumference of the printing rim (50) The surface forms an interval (52) for the workpiece (90) to be pulled rearwardly displaced, and the front control guide wheel (111) is synchronously rotated with the rear control guide wheel (121) to drive the object to be printed ( 90) the distance traveled is set to be the same as the length of the blanket (51) cloth surface with respect to the circumference of the printing roller (50);
When the printing roller (50) is rotated relative to the pressure (60) to the interval (52), the front control guide wheel (111) and the rear control guide wheel (121) are set to be immediately synchronized and reversely driven. The to-be-printed matter (90) is retracted until the end of the last printed ink (21) on the object to be printed (90) is closest to the horizontal tangent point of the pressure (60);
Immediately redoing the above, the front end control guide wheel (111) and the rear end control guide wheel (121) are synchronously rotated to drive the distance forward of the object to be printed (90), and are set to be opposite to the blanket (51) cloth surface. The circumference of the printing tumbler (50) is the same; if the printing object (90) is continuously introduced, the front end control guide wheel (111) and the rear end control guide wheel (121) are continuously synchronized. The object to be printed (90) is reversely staggered, and the purpose of successively printing the surface is achieved by spacer tread printing through a blanket (51) having a space (52) glued on the circumference of the printing roll (50). The method for achieving a continuous printing surface according to the size of different graphic areas on the applicable layout mentioned in the seventh aspect of the patent application, wherein the method further comprises:
The first guiding structure (11) further includes a first tension balancing member (112) that is displaceable to maintain the fixed tension of the object to be printed (90); the second guiding structure (12) further includes a The first tension balance member (112) is correspondingly reversely displaced to maintain the fixed tension of the second tension balance member (122); and the first tension balance member (112) and the second tension The balance member (122) sets an initial position;
The distance between the front end control guide wheel (111) and the rear end control guide wheel (121) is forwarded to drive the object to be printed (90), and is set to face the printing roll with the blanket (51). (50) before the length occupied by the circumference is the same, first setting the first tension balance member (112) and the second tension balance member (122) to immediately return to the initial position; and when the object to be printed (90) is last When the end of the printed ink (21) is closest to the horizontal tangent point of the pressure (60); the front control guide wheel (111) and the rear control guide wheel (121) are reversed synchronously to drive the object to be printed (90) backward. The distance obtained by adding the distance from the feeding end (91) to the object to be printed (90) at a constant speed is averaged, and the first tension balance member (112) is set to maintain the fixed tension of the object to be printed (90). The distance of the displacement; and the distance between the front control guide wheel (111) and the rear control guide wheel (121) is reversed, and the distance of the object to be printed (90) is retracted, and is outputted at a constant speed with the discharge end (92). The distance obtained by adding the distances of the objects to be printed (90) is averaged, and the second tension balance member (122) is set to correspond to the first sheet. Balance member (112) to maintain the reverse (90) fixed to the tension to be displaced from the printed matter. A method for achieving a continuous printing surface according to the size of different graphic areas on the applicable layout described in claim 7 or 8, wherein the lithographic plate (41) is wet; and the printing machine (10) further comprises a pivoting a wetting unit (80) surrounding the plate (40), the wetting unit (80) having a dampening fluid (82) that can be controlled to be in contact with the lithographic plate (41), and the dampening fluid (82) ) is in contact with the lithographic plate (41). The method for achieving a continuous printing surface according to the size of different graphic areas on the applicable layout described in claim 7 or 8, wherein the lithographic plate (41) is dry; and the printing machine (10) further comprises a pivoting device a wetting unit (80) around the plate (40), the wetting unit (80) having a wetting fluid (82) that can be controlled to be in contact with the lithographic plate (41), and the dampening solution (82) It is spaced apart from the lithographic plate (41).