TWI694007B - Co-directional closed scraper device of gravure printing machine - Google Patents

Abstract

A co-directional closed blade device of a gravure printing machine, which mainly uses a closed ink tank as a design starting point, is characterized in that a blade device is provided, and the first blade above is arranged in the same direction as the rotation direction of the intaglio cylinder, which can pick up The ink is scraped into the gravure dots of the gravure cylinder to make the printed ink full; and the second scraper at the bottom cooperates with the first scraper at the top to seal the printed ink in the scraper device to prevent ink splashing, stabilize the ink viscosity and The effect of reducing the concentration of organic solvent gas in the working environment.

Description

Co-directional closed scraper device of gravure printing machine

The invention relates to gravure printing machine equipment, in particular to a same-direction closed blade device applied to gravure printing machine.

Press, gravure printing is a printing method in which ink is filled into the gravure. Gravure printing can display delicate layering and rich ink, which is very suitable for printing products that need to be printed. At the same time, the ink dries quickly after printing, so it is also suitable for printing a large number of color magazines, photos, wallpapers, promotional materials, banknotes, watermarks and other printed products.

As shown in FIG. 1, it shows the structure printed by a conventional gravure printing machine. An ink tank 40 is at the bottom, a gravure cylinder 10 (plate roller) in the middle, and a rubber cylinder 20 (pressure roller) at the top. 30 is provided between the gravure cylinder 10 and the rubber cylinder 20; the ink tank 40 has printing ink; one side of the gravure cylinder 10 is provided with a scraper device 50 for scraping off excess ink; when in use, the aforementioned gravure cylinder 10 is stained The printing ink in the full ink tank 40 is scraped off the excess printing ink on the surface of the gravure cylinder 10 by the doctor device 50, and the printed matter 30 is pressurized through the gravure cylinder 10 and the rubber cylinder 20 to allow the printing ink from the gravure cylinder 10 The part of the upper gravure dot 11 is transferred to the printed matter 30; however, the disadvantages of the structure of FIG. 1 are: 1. The ink tank 40 is an open design, so the printing ink will volatilize, not only the smell is bad for the human body, but also the waste of printing ink increases the cost; 2. The conventional ink tank 40 is an open design. When the gravure cylinder 10 is stained with ink, the printing ink will splash along the centrifugal direction of the gravure cylinder 10, causing the machine and the surrounding environment of the machine to be dirty.

As shown in FIG. 2, in order to solve the problem that the printing ink of the structure of FIG. 1 is easy to waste and splash around, some manufacturers have developed a closed blade ink tank 60, and the ink tank 40 used in FIG. On the side, the upper and lower ends of the ink tank 40 are respectively arranged symmetrically and fit to the first blade 71 and the second blade 72 of the gravure cylinder 10 below the second blade 72 to prevent the printing ink from leaking out; It can indeed prevent the printing ink from volatilizing and splashing; however, its shortcomings are: the first blade 71 and the second blade 72 are fixed structures and cannot be adjusted, so in order to be applied to most gravure cylinders 10, they must be closely attached However, as shown in FIG. 2, the design of the upper first doctor blade 71 will extend into the intaglio dots 11 in the intaglio cylinder 10 to scrape out the printing ink inside, causing the printing effect of the object 30 to be unsatisfactory.

As shown in FIG. 3, it is a further application of FIG. 2, which combines a relief cylinder 80. However, its disadvantage is that the equipment cost is higher and the printing cost is greatly increased.

How to solve the deficiencies caused by the aforementioned three intaglio printing presses is a problem that the current industry actively solves.

The main object of the present invention is to provide a co-directional closed blade device of a gravure printing machine, which mainly uses a closed ink tank as a design starting point, and is characterized in that a blade device is provided, and the first blade above is arranged with the rotation direction of the intaglio cylinder In the same direction, the stained ink can be scraped into the gravure dots in the gravure cylinder to make the printed ink full; and the second scraper at the bottom cooperates with the first scraper at the top to seal the printed ink in the scraper device to prevent The effect of ink splashing.

The structure that can achieve the foregoing purpose is installed on a gravure printing machine, the gravure printing machine has a gravure cylinder and a rubber cylinder, the gravure cylinder and the rubber roller A printed object is arranged between the cylinders; the surface of the gravure cylinder is provided with a number of gravure dots, the gravure cylinder is provided with the same-direction closed scraper device relative to the side of the rubber cylinder, characterized in that the same-direction closed scraper device Laminated on the gravure cylinder to provide ink for gravure cylinder printing, the same-direction closed blade device includes a base, a first blade, a second blade and an adjustment module; the aforementioned base provides the aforementioned The first scraper, second scraper and adjustment module are provided, and the base is a hollow structure to provide printing ink storage. Further, the base is provided with a plurality of pipelines, which provide printing ink replenishment; The first scraper is installed at the upper end of the base and the first scraper is in contact with the surface of the gravure cylinder and scrapes off excess ink on the gravure cylinder, wherein the direction of the first scraper is rotated with the gravure cylinder In the same direction, prevent the first scraper from being inserted backwards into the gravure dot of the gravure cylinder; the second scraper is arranged at the lower end of the base, the second scraper is in contact with the surface of the lower end of the gravure cylinder, and the second scraper scrapes off Dirt on the gravure cylinder, and the second scraper is used to close the lower end of the base, so that the printing ink is stored in the base without leaking, and the first scraper and the second scraper are arranged asymmetrically The adjustment module provides the first doctor blade assembly, and fine-tune the position of the adjustment module to adjust the relative position of the first doctor blade and the gravure cylinder; by the first doctor blade to scrape excess printing ink In addition to filling the gravure dots with ink, the second scraper cooperates with the first scraper to seal the printed ink in the same-direction closed scraper device to achieve the effect of preventing the printing ink from splashing.

In an embodiment of the present invention, wherein the adjustment module includes several adjustments The whole screw and an adjustment base; the aforementioned adjustment base is installed on the inner side of the base, and the adjustment screw is used to drive the adjustment base forward and backward; furthermore, the first scraper is installed on the adjustment base, by The relative position and angle of the first doctor blade and the intaglio cylinder are adjusted by the position of the adjusting base.

Through the above structure, the present invention can provide the following advantages:

1. Keep the working environment clean.

2. Slow down the loss of printing ink.

3. Let the printing effect appear full and beautiful.

4. Reduce the solvent volatilization in the printing ink, stabilize the printing ink viscosity and then keep the finished product of the printing maintain good quality.

"this invention"

10‧‧‧gravure cylinder

11‧‧‧ Gravure dots

20‧‧‧ Rubber roller

30‧‧‧ printed matter

100‧‧‧Co-directional closed scraper device

101‧‧‧Dock

102‧‧‧The first scraper

103‧‧‧Second Scraper

104‧‧‧Adjust module

1041‧‧‧Adjusting screw

1042‧‧‧Adjuster

1043‧‧‧Handwheel operation

105‧‧‧Baffle

106‧‧‧Ink tank

107‧‧‧Pneumatic device

"Convention"

10‧‧‧gravure cylinder

11‧‧‧ Gravure dots

20‧‧‧ Rubber roller

30‧‧‧ printed matter

40‧‧‧Ink tank

50‧‧‧Scraper device

60‧‧‧Closed scraper ink tank

71‧‧‧First Scraper

72‧‧‧Second Scraper

80‧‧‧Relief cylinder

Fig. 1 is a schematic diagram (1) of a conventional structure.

Figure 2 is a schematic diagram of the conventional structure (2).

Figure 3 is a schematic diagram of the conventional structure (3).

FIG. 4 is a schematic structural diagram of the present invention.

FIG. 5 is an enlarged view of the connection relationship between the same-direction closed blade device and the gravure cylinder.

Fig. 6 is a schematic diagram of adjustment of the same-direction closed blade device.

7 is a layout diagram of the base and the intaglio roller of the present invention.

8 is a diagram of the printing ink pipeline of the present invention.

9 and 10 are schematic views of the present invention provided with a pneumatic device for maintaining the same-direction closed blade device.

In order for your reviewing committee to have a better understanding and recognition of the features and characteristics of the present invention, the following preferred embodiments are listed below with reference to the drawings: please refer to FIGS. 4 to 5, the same as the gravure printing machine of the present invention To the closed blade device 100, it is installed on a gravure printing machine. The aforementioned gravure printing machine has a gravure cylinder 10 and a rubber cylinder 20. A printed object 30 is provided between the gravure cylinder 10 and the rubber cylinder 20; The surface of the gravure cylinder 10 is provided with a number of gravure dots 11. The gravure cylinder 10 is provided with the same-direction closed blade device 100 on the side of the rubber cylinder 20.

As shown in FIGS. 4 and 5, the same-direction closed blade device 100 is attached to the gravure cylinder 10 to provide the gravure cylinder 10 with printing ink. The same-direction closed blade device 100 includes a base 101 and a first blade 102. A second scraper 103 and an adjustment module 104 are formed.

As shown in FIGS. 4, 5, and 7, the aforementioned base 101 provides the aforementioned first scraper 102, second scraper 103, and adjustment module 104, and the base 101 has a hollow structure to provide printing ink storage. Further, the base 101 is provided with a plurality of pipelines, and these pipelines provide printing ink replenishment; furthermore, the base 101 is provided with baffles 105 on both sides to prevent ink leakage.

As shown in FIGS. 4 and 5, the first doctor blade 102 is installed at the upper end of the base 101 and the first doctor blade 102 contacts the surface of the gravure cylinder 10 and scrapes off excess ink on the gravure cylinder 10, wherein The direction of setting the first doctor blade 102 is the same as the direction of rotation of the gravure cylinder 10 to prevent the first doctor blade 102 from being inserted backwards into the gravure dot 11 of the gravure cylinder 10. As shown in FIG. 6, in addition to the angled structure shown in FIGS. 4 and 5, the first scraper 102 may also be a straight scraper as shown in FIG. 6.

As shown in FIGS. 4 and 5, the second scraper 103 is provided at the lower end of the base 101, the second scraper 103 is in contact with the lower end surface of the gravure cylinder 10, and the second scraper 103 scrapes the gravure Dirt on the cylinder 10, and the second scraper 103 is used to close the lower end of the base 101 so that the printing ink is stored in the base 101 without leakage, and the first scraper 102 and the second scraper 103 are provided The position is asymmetrical and differs from the conventional structure of FIG. 2.

As shown in FIGS. 4 and 5, the adjustment module 104 includes a plurality of adjustment screws 1041 and an adjustment base 1042; the aforementioned adjustment base 1042 is installed inside the base 101 and is driven by the adjustment screw 1041 The adjustment base 1042 moves forward and backward; as shown in FIG. 6, the first scraper 102 is installed on the adjustment base 1042, and the relative position of the first scraper 102 and the gravure cylinder 10 is adjusted by the position of the adjustment base 1042 And the relative angle between the first doctor blade 102 and the gravure cylinder 10.

As shown in FIG. 8, it discloses the ink tank 106 of the same-direction closed blade device 100 that provides printing ink. The upper line in FIG. 8 provides the function of replenishing ink, while the lower line is used for printing ink circulation and cleaning. Features.

Through the above description, the use mode of the present invention has the following advantages:

1. Since the first doctor blade 102 of the present invention has a structure capable of adjusting the relative position to the intaglio cylinder 10, as shown in FIG. 6, the first doctor blade 102 can adjust the position of the adjusting device 104 according to the intaglio cylinder 10 of different sizes, and The problem that the first doctor blade 102 extends into the gravure dot 11 and digs out the printing ink in the gravure dot 11 is prevented. Further, the first doctor blade 102 can smooth out the printing ink on the surface of the gravure cylinder 10, and can also fill the gravure dots 11 with the printing ink, so that the printed matter maintains a full ink amount after printing, and thus the printed matter has a beautiful appearance , Dazzling effect. The part to be further explained is: FIG. 6 is divided into a, b, and c action directions. The a direction is to adjust the front and rear positions of the same-direction closed blade device 100 of the present invention; the b direction is to adjust the same-direction closing of the present invention. The upper and lower positions and the c-direction of the scraper device 100 adjust and adjust the moving direction of the first scraper 102 forward or backward

2. The present invention has the advantages of a closed ink tank. The same-direction closed blade device 100 uses the first blade 102 and the second blade 103 to close the base 101 to prevent the printing ink from volatilizing and splashing, which can maintain a clean environment. 2. Slow down the speed of printing ink consumption; in other words, it can reduce costs and increase profits for the industry.

3. As shown in FIGS. 4 and 5, wherein the adjustment module 104 includes an adjustment screw 1041 for adjusting the horizontal direction, an adjustment screw 1041 for adjusting the vertical position of the adjustment base 1042 can also be provided along the vertical direction. An operation hand wheel 1043 is sleeved on the adjusting screw 1041, so that the position of the first scraper 102 can be adjusted.

4. The present invention overcomes the lack of conventional fixed closed ink tanks, can be applied to gravure cylinders 10 of different sizes for printing operations, can be mass-produced and used, and has extremely high economic benefits.

5. The present invention can also be applied to the structure of FIG. 3, the gravure cylinder 10 can be connected to a relief cylinder (not shown), and the printing ink on the gravure cylinder 10 is transferred to the relief cylinder, the relief cylinder The other end is connected to the rubber cylinder 20, and the ink on the relief cylinder is transferred to the object 30 to be printed.

6. As shown in FIGS. 9 and 10, the present invention is also very convenient for maintenance and maintenance. An air pressure device 107 is provided below the base 101, which can drive the base 101 to tilt at an angle and then separate from the gravure cylinder 10. The advantage of this is that the printing ink will not leak, and it is convenient for equipment maintenance and maintenance work. 9 and 10 are schematic views of actual application of the present invention, in which the handwheel in the figure is used to adjust the position of the same-direction closed blade device 100 and adjust the tightness between the same-direction closed blade device 100 and the gravure cylinder 10 degree.

In summary, the structure of the present invention has not been seen in various books or public use, Sincerity meets the requirements for application for invention patents, I urge the Jun Bureau to learn from it and grant the patent as soon as possible.

It should be stated that the above is the technical principle immediately applied in the specific implementation of the present invention. If the changes made according to the concept of the present invention do not produce a function that exceeds the spirit covered by the description and drawings, All should fall within the scope of the present invention and be conjoined with Chen Ming.

10‧‧‧gravure cylinder

11‧‧‧ Gravure dots

20‧‧‧ Rubber roller

30‧‧‧ printed matter

100‧‧‧Co-directional closed scraper device

101‧‧‧Dock

102‧‧‧The first scraper

103‧‧‧Second Scraper

104‧‧‧Adjust module

1041‧‧‧Adjusting screw

1042‧‧‧Adjuster

1043‧‧‧Handwheel operation

Claims (5)

A co-directional closed blade device of a gravure printing machine is installed on a gravure printing machine. The aforementioned gravure printing machine has a gravure cylinder and a rubber cylinder, and a printed object is arranged between the gravure cylinder and the rubber cylinder; The surface of the gravure cylinder is provided with a number of gravure dots, the gravure cylinder is provided with the same-direction closed blade device relative to the side of the rubber cylinder, characterized in that the same-direction closed blade device is attached to the gravure cylinder, To provide ink for gravure cylinder printing, the same-direction closed blade device includes a base, a first blade, a second blade and an adjustment module; the aforementioned base provides the aforementioned first blade and second blade And adjust the module settings, and the base is a hollow structure to provide printing ink storage, further the base is provided with a plurality of pipelines, these pipelines provide printing ink replenishment and cleaning; the first scraper system It is installed on the upper end of the base and the first scraper is in contact with the surface of the gravure cylinder, and scrapes off excess ink on the gravure cylinder, wherein the direction of setting the first scraper is the same as the direction of rotation of the gravure cylinder, preventing the The first doctor blade is inserted into the gravure dot of the gravure cylinder; the second doctor blade is arranged at the lower end of the base, the second doctor blade is in contact with the surface of the lower end of the gravure cylinder, and the second doctor blade scrapes off the dirt on the gravure cylinder In addition, the second scraper is used to close the lower end of the base, so that the printing ink is stored in the base without leakage, and the first scraper and the second scraper are arranged in an asymmetrical shape; the adjustment The module provides the installation of the first doctor blade, and the relative position of the first doctor blade and the gravure cylinder can be adjusted through the adjustment module; the first printing blade can be used to scrape off excess printing ink. And the gravure dot is filled with ink, and the second scraper cooperates with the first scraper to seal the printed ink in the same-direction closed scraper device to achieve the effect of preventing the printing ink from splashing, and the adjustment module includes Several adjusting screws, an adjusting base and an adjusting screw for adjusting the vertical position of the adjusting base in the vertical direction; the aforementioned adjusting base is installed inside the base, and the adjusting base is driven to move forward and backward through the adjusting screw ; Furthermore, the first scraper is installed on the adjustment seat, the relative position and angle of the first scraper and the intaglio cylinder are adjusted by the position of the adjustment seat. According to the same direction closed squeegee device of the gravure printing machine described in item 1 of the patent application scope, an operation hand wheel is sleeved on the adjusting screw. According to the same direction closed squeegee device of the gravure printing machine described in item 1 of the patent application scope, wherein the gravure roller can be further connected to a relief roller, the printing ink on the gravure roller is transferred to the relief roller, the relief roller The other end is connected to the rubber roller to transfer the ink on the relief roller to the printed matter. According to the same-direction closed blade device of the gravure printing machine described in item 1 of the patent application scope, wherein the first blade has a structure with a curved angle. According to the same-direction closed blade device of the gravure printing machine described in item 1 of the patent application scope, wherein the first blade is a straight structure.

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