CN110654108A

CN110654108A - Printing machine doctor blade system with leveling function

Info

Publication number: CN110654108A
Application number: CN201910786991.3A
Authority: CN
Inventors: 曹永民
Original assignee: 曹永民
Current assignee: GUANGDONG NEW GRAND LONG PACKING Co.,Ltd.
Priority date: 2019-08-24
Filing date: 2019-08-24
Publication date: 2020-01-07
Anticipated expiration: 2039-08-24
Also published as: CN110654108B

Abstract

The invention discloses a printing machine doctor blade system with a leveling function, which structurally comprises a doctor blade structure, an ink tank, an ink transfer roller, a printing plate cylinder and an impression cylinder, wherein the ink transfer roller is arranged in the ink tank and is positioned obliquely below the printing plate cylinder, the printing plate cylinder is movably attached to the ink transfer roller, the doctor blade structure is arranged on one side of the ink transfer roller, the impression cylinder is arranged in the middle of the opposite top ends of the printing plate cylinder and the ink tank, and the impression cylinder is attached to the printing plate cylinder, prevent the doctor blade from locally lifting or having a gap, thereby influencing the distribution of the doctor blade.

Description

Printing machine doctor blade system with leveling function

Technical Field

The invention relates to the field of printing equipment, in particular to a doctor blade system of a printing machine with a leveling function.

Background

In the printing process of the printing machine, in order to obtain uniform printing, the color is the same before and after, the difference between the viscosity and the good fluidity are avoided, a clean wood bar or a metal bar is used for uniformly stirring the ink in the ink tank, but when the ink is transferred to the printing plate cylinder by the ink transfer roller, the printing plate cylinder needs to be scraped, if the scraping blade is not fixed accurately, the vertical deviation is easy to occur, so that the left and right heights of the horizontal are not uniform, the scraping pressure is different, the ink distribution of the printing plate cylinder is not uniform, so that the printed finished product has uneven ink mark distribution, ink marks in some places are very light, and ink marks in some places are very deep and poor in quality.

Disclosure of Invention

Aiming at the defects of the prior art, the invention is realized by the following technical scheme: the utility model provides a printing machine ink scraping blade system with leveling function, its structure includes ink scraping blade structure, china ink groove, distributor roller, plate cylinder, impression cylinder, be equipped with distributor roller in the china ink groove, distributor roller is located the oblique below of plate cylinder, plate cylinder and distributor roller activity laminating, the ink scraping blade structure is installed to one side of distributor roller, the top centre that plate cylinder and china ink groove are relative is equipped with the impression cylinder, impression cylinder and plate cylinder hug closely.

As a further optimization of the technical scheme, the doctor blade structure comprises a pumping structure, a bottom plate and a doctor blade, wherein the pumping structure is configured on the side surface of the bottom plate, the doctor blade is mounted on the bottom plate, and the tail end of the doctor blade is tangent to the plate cylinder.

As a further optimization of the technical scheme, the bottom plate comprises a threaded knob, a blade clamping groove, a blade placing platform and a plate body, a square notch is formed in the top end face of the plate body, the notch is communicated with one end of the bottom plate, the end face of the notch is the blade placing platform, the plate body adjacent to the notch is provided with the blade clamping groove, the top end face of the plate body right opposite to the blade clamping groove is provided with the threaded knob, and the threaded knob is in movable contact with the plate body.

As the further optimization of the technical scheme, the number of the thread knobs is three, and the thread knobs are uniformly and equidistantly distributed.

As a further optimization of the technical scheme, the pressure pumping structure comprises a swing rod, a drawing rod, an air cavity, a straight pipe and a gas pipe, wherein the air cavity is formed in one end of the plate body, the drawing rod is matched with the air cavity in a movable fit mode, the other end of the drawing rod is connected with the swing rod in a connecting mode, the end, away from the swing rod, of the air cavity is movably matched with the gas pipe, the gas pipe is perpendicular to the straight pipe, and the straight pipe is communicated with the gas pipe.

As a further optimization of the technical scheme, the number of the straight pipes is three, the three straight pipes are uniformly distributed on the gas conveying pipe, and the tail ends of the straight pipes are directly contacted with the knife face of the knife.

Advantageous effects

Compared with the prior art, the printing machine doctor blade system with the leveling function has the following advantages:

1. the invention further ensures that the edges of the ink scraping knife and the plate cylinder are in the same horizontal line and are not inclined, and realizes that the ink scraping knife scrapes the plate cylinder uniformly.

2. The doctor blade is uniformly and equidistantly fixed on the blade placing platform by adopting the three threaded knobs, and three points are uniformly stressed when the doctor blade is installed, so that the attaching degree of the blade placing platform and the doctor blade is further ensured, and the doctor blade is prevented from locally lifting or having gaps, so that the distribution of the doctor blade is influenced.

3. The invention adopts the drawing rod to control the air content in the air cavity, the straight pipe and the air conveying pipe, and uniformly and accurately adjusts the adsorption force of the scraper face, and the quantity design of the straight pipes further improves the uniform distribution of the adsorption force of the scraper, ensures that the pressure applied to the scraper is consistent, and ensures that the blades are always positioned on the same horizontal line and are scraped consistently.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic plan view of a printing press doctor blade system with leveling capability according to the present invention.

Fig. 2 is a schematic plan view of the doctor blade structure of the present invention.

FIG. 3 is a cross-sectional view of the doctor blade structure of the present invention.

FIG. 4 is a schematic top view of the doctor blade structure of the present invention.

Fig. 5 is a schematic cross-sectional view of a doctor blade configuration of the present invention in an unused state.

FIG. 6 is a schematic cross-sectional view of the doctor blade configuration of the present invention in use.

In the figure: the device comprises a doctor blade structure 1, an ink groove 2, an ink transfer roller 3, a printing plate cylinder 4, an impression cylinder 5, a pumping structure 7, a bottom plate 8, a doctor blade 9, a threaded knob 81, a blade clamping groove 82, a blade placing platform 83, a plate body 84, a swing rod 7-1, a drawing rod 7-2, an air cavity 7-3, a straight pipe 7-4 and an air conveying pipe 7-5.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the following description and the accompanying drawings further illustrate the preferred embodiments of the invention.

Examples

Referring to fig. 1-6, the invention provides a doctor blade system with a leveling function for a printing press, which structurally comprises a doctor blade structure 1, an ink tank 2, an ink transfer roller 3, a plate cylinder 4 and an impression cylinder 5, wherein the ink tank 2 is internally provided with the ink transfer roller 3, the ink transfer roller 3 is positioned obliquely below the plate cylinder 4, the plate cylinder 4 is movably attached to the ink transfer roller 3, one side of the ink transfer roller 3 is provided with the doctor blade structure 1, the impression cylinder 5 is arranged right in the middle of the opposite top ends of the plate cylinder 4 and the ink tank 2, and the impression cylinder 5 is closely attached to the plate cylinder 4.

The scraping blade structure 1 is composed of a pumping structure 7, a bottom plate 8 and a scraping blade 9, the pumping structure 7 is arranged on the side face of the bottom plate 8, the scraping blade 9 is installed on the bottom plate 8, and the tail end of the scraping blade 9 is tangent to the printing plate cylinder 4.

The bottom plate 8 is composed of a threaded knob 81, a blade clamping groove 82, a blade placing platform 83 and a plate body 84, a square notch is formed in the top end face of the plate body 84, the notch is communicated with one end of the bottom plate 8, the end face of the notch is the blade placing platform 83, the plate body 84 adjacent to the notch is provided with the blade clamping groove 82, the threaded knob 81 is arranged on the top end face of the plate body 84 opposite to the blade clamping groove 82, and the threaded knob 81 is in movable contact with the plate body 84.

The thread knob 81 is three and evenly distributed at equal intervals, and after the doctor blade 9 is installed in the blade clamping groove 82, pressure is applied to the horizontal two ends and the middle position of the doctor blade, so that the doctor blade 9 is ensured to be fixed and stable, the problem of falling or inclination is avoided, and the doctor blade 9 is uniformly pressurized.

The pumping structure 7 consists of a swing rod 7-1, a drawing rod 7-2, an air cavity 7-3, a straight pipe 7-4 and an air pipe 7-5, wherein the air cavity 7-3 is arranged at one end of a plate body 84, the air cavity 7-3 is provided with the drawing rod 7-2 which is movably matched with the air cavity 7-3, the other end of the drawing rod 7-2 is connected with the swing rod 7-1, the end of the air cavity 7-3 far away from the swing rod 7-1 is movably matched with the air pipe 7-5, the air pipe 7-5 is vertical to the straight pipe 7-4, the straight pipe 7-4 is communicated with the air pipe 7-5, the straight pipe 7-4 and the air pipe 7-5 are adopted to form the air pressure cavity, once the air is pumped, the air is communicated and flows, and the reduced pressure at three positions is consistent, no uniform unbalance occurs.

The three straight pipes 7-4 are arranged, the three straight pipes 7-4 are uniformly distributed on the gas transmission pipe 7-5, the tail ends of the straight pipes 7-4 are directly contacted with the knife face of the ink scraping knife 9, the same negative pressure is applied to the three horizontal positions of the knife face of the ink scraping knife 9, and the ink scraping knife 9 is ensured to be completely adsorbed and tightly attached to the blade placing platform 83

When the ink in the ink groove is uniformly stirred by using a clean wooden stick or a metal stick and then is transferred to the plate cylinder by using an ink transfer roller, the plate cylinder needs to be scraped, the tail end of the ink scraping knife 9 is tangent to the plate cylinder 4, the knife face of the ink scraping knife 9 is attached to a knife blade placing platform 83, the end head of the ink scraping knife 9 is uniformly and equidistantly fixed in a knife blade clamping groove 82 of a plate body 84 by three thread knobs 81, the ink scraping knife 9 is ensured to be uniformly stressed when being installed, the tangent knife edge of the ink scraping knife 9 and the plate cylinder is on the same horizontal line, no included angle exists between the ink scraping knife 9 and the horizontal line, the scraping pressure is consistent, the strength of the ink scraping knife 9 attached to the knife blade placing platform 83 can be further improved by a pumping structure 7, the swing rod 7-1 is mechanically swung, the air in the air cavity 7-3 is horizontally drawn, the air cavity 7-3 is communicated with the straight, air in the three parts is communicated, once the air is extracted, the doctor blade 9 contacted with the straight pipe 7-4 is further attached to the blade placing platform 83 due to negative pressure, and the straight pipe 7-4 is contacted with the horizontal three positions of the doctor blade 9 to uniformly adsorb the doctor blade 9, so that the pressure on the doctor blade 9 is ensured to be consistent.

While there have been shown and described what are at present considered the fundamental principles of the invention, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but rather, is capable of numerous changes and modifications in various forms without departing from the spirit or essential characteristics thereof, and it is intended that the invention be limited not by the foregoing descriptions, but rather by the appended claims and their equivalents.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A printing machine doctor blade system with leveling function is characterized in that: its structure includes doctor blade structure (1), china ink groove (2), distributor roller (3), plate cylinder (4), impression cylinder (5), be equipped with distributor roller (3) in china ink groove (2), distributor roller (3) are located plate cylinder (4) oblique below, plate cylinder (4) and distributor roller (3) activity laminating, doctor blade structure (1) is installed to one side of distributor roller (3), be equipped with impression cylinder (5) in the middle of plate cylinder (4) and the relative top of china ink groove (2) are positive, impression cylinder (5) and plate cylinder (4) are hugged closely.

2. A printer doctor blade system with leveling function according to claim 1, wherein: the scraping blade structure (1) is composed of a pressure pumping structure (7), a bottom plate (8) and a scraping blade (9), the pressure pumping structure (7) is configured on the side face of the bottom plate (8), the scraping blade (9) is installed on the bottom plate (8), and the tail end of the scraping blade (9) is tangent to the printing plate roller (4).

3. A printer doctor blade system with leveling function according to claim 2, wherein: the bottom plate (8) comprises a threaded knob (81), a blade clamping groove (82), a blade placing platform (83) and a plate body (84), a square notch is formed in the top end face of the plate body (84), the notch is communicated with one end of the bottom plate (8), the end face of the notch is the blade placing platform (83), the plate body (84) adjacent to the notch is provided with the blade clamping groove (82), and the top end face of the plate body (84) right opposite to the blade clamping groove (82) is provided with the threaded knob (81).

4. A printer doctor blade system with leveling function according to claim 3, wherein: the number of the threaded knobs (81) is three.

5. A printer doctor blade system with leveling function according to claim 2, wherein: the pumping structure (7) consists of a swing rod (7-1), a pulling rod (7-2), an air cavity (7-3), a straight pipe (7-4) and an air pipe (7-5), wherein the air cavity (7-3) is arranged at one end of a plate body (84), the pulling rod (7-2) which is movably matched with the air cavity (7-3) is arranged in the air cavity (7-3), the other end of the pulling rod (7-2) is connected with the swing rod (7-1), the end, away from the swing rod (7-1), of the air cavity (7-3) is movably matched with the air pipe (7-5), and the air pipe (7-5) and the straight pipe (7-4) are perpendicular to each other.

6. A printing press doctor blade system with levelling function as claimed in claim 5, wherein: the number of the straight pipes (7-4) is three, the three straight pipes (7-4) are uniformly distributed on the gas transmission pipe (7-5), and the tail ends of the straight pipes (7-4) are directly contacted with the knife face of the knife (9).