CN113211972B

CN113211972B - Closed negative pressure double-scraper ink chamber

Info

Publication number: CN113211972B
Application number: CN202110389206.8A
Authority: CN
Inventors: 吴越
Original assignee: Guangzhou Julong Packaging Equipment Co ltd
Current assignee: Guangzhou Julong Packaging Equipment Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2022-11-08
Anticipated expiration: 2041-04-12
Also published as: CN113211972A

Abstract

The invention discloses a closed negative pressure double-scraper ink chamber which comprises two left and right parallel mounting plates, wherein an ink chamber, an anilox roller and an ink tray are arranged between the two mounting plates, the anilox roller is arranged right in front of an ink outlet of the ink chamber, the ink tray is arranged below the ink chamber and the anilox roller, an ink inlet is arranged in the middle of the ink chamber, ink return ports and air holes are arranged at the upper parts of the left side and the right side of the ink chamber, the openings of the two air holes are upward, an ink inlet pipe is arranged on the ink inlet, an ink inlet pump is connected onto the ink inlet pipe, ink return pipes are arranged on the two ink return ports, and ink return pumps are arranged on the ink return pipes. According to the invention, the ink return pipe and the ink return pump are arranged on the ink return port, and the two air holes are formed, so that the serious problems that the scraper cannot cleanly scrape redundant ink and ink leaks and flies due to the deformation of the scraper caused by large ink pressure in the ink cavity can be avoided, the abrasion of the scraper and the sealing block on the side surface of the ink cavity is greatly reduced, the service lives of the scraper and the sealing block are prolonged, the unnecessary frequent replacement time is shortened, and the printing efficiency and the printing effect are improved.

Description

Closed negative pressure double-scraper ink chamber

Technical Field

The invention relates to the technical field of printing equipment, in particular to a closed negative pressure double-scraper ink chamber.

Background

In systems for delivering ink in flexographic printing machines, there are generally two forms available:

one is the ink pan type, i.e. the ink transfer cylinder is immersed in the ink pan, and the excess ink is scraped off by a single scraper, which carries the ink out by rotation.

The other is a form of closing the ink chamber using a double blade. Because of the advantages of closed ink chambers over ink trays, more and more devices employ double doctor blades to close the ink chambers.

However, the double-scraper closed ink chamber in the existing market has the following defects:

pumping the ink into the ink cavity from the ink barrel through an ink pump, and realizing the ink to flow back to the ink barrel by utilizing the self gravity of the ink;

the ink pressure in the ink cavity is very high, and the ink leakage and ink flying phenomena are serious;

the ink pressure in the ink cavity is very high, and even the scraper cannot scrape redundant ink or leaks from the scraper;

the doctor blade and the closing block at the side of the ink chamber are frequently replaced.

Disclosure of Invention

The invention provides a closed negative pressure double-scraper ink chamber to solve the problems in the background art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a two scraper china ink chambeies of closed negative pressure, includes the mounting panel of controlling the parallel, two be equipped with china ink chamber, reticulation roller and ink tray between the mounting panel, the reticulation roller is located the positive front side of the play china ink mouth in china ink chamber, the ink tray is located china ink chamber with reticulation roller below, be equipped with into china ink mouth in the middle of the china ink chamber, the upper portion of the left and right sides in china ink chamber all is equipped with ink return mouth and bleeder vent, and the opening of two bleeder vents makes progress, it is equipped with into the china ink pipe on the china ink inlet mouth to advance, be connected with into the china ink pump on the china ink pipe, two all be equipped with back the china ink pipe on the ink return mouth, all be equipped with back the china ink pump on the back china ink pipe.

Furthermore, a first motor for driving the anilox roller is arranged on the left end face of the mounting plate on the left side.

Further, a printing plate cylinder tightly attached to the anilox roller is arranged on the rear side of the anilox roller.

Further, a second motor for driving the plate cylinder is arranged on the rear side of the first motor.

Furthermore, two scrapers matched with the anilox roller are arranged at the rear end of the ink cavity.

Further, a handle is arranged on the ink cavity.

The invention has the beneficial effects that:

by adopting the technical scheme, the ink return pipe and the ink return pump are arranged on the ink return port, and the two air holes are formed, so that the serious problems that the scraper deforms and scrapes unclean redundant ink and ink leakage flies due to the fact that the ink pressure in the ink cavity is large can be avoided, abrasion of the scraper and the sealing block on the side face of the ink cavity is greatly reduced, the service life of the scraper and the sealing block is prolonged, unnecessary time for frequent replacement is shortened, and printing efficiency and effect are improved.

Drawings

FIG. 1 is a schematic perspective view of an ink chamber of a closed negative pressure double-scraper according to the present invention;

FIG. 2 is a schematic perspective view of an ink chamber in a closed negative pressure double-scraper ink chamber according to the present invention.

Figures and their description:

1. mounting a plate; 2. a first motor; 3. a second motor; 4. air holes are formed; 5. an ink return port; 6. an anilox roll; 7. a handle; 8. an ink inlet; 9. an ink chamber; 10. a plate cylinder; 11. an ink tray; 12. and (4) scraping the blade.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 2, the closed negative pressure double-scraper ink chamber provided by the present invention includes two left and right parallel mounting plates 1, an ink chamber 9, an anilox roller 6 and an ink tray 11 are disposed between the two mounting plates 1, the anilox roller 6 is disposed right in front of an ink outlet of the ink chamber 9, the ink tray 11 is disposed below the ink chamber 9 and the anilox roller 6, an ink inlet 8 is disposed in the middle of the ink chamber 9, ink return ports 5 and air holes 4 are disposed on upper portions of left and right sides of the ink chamber 9, openings of the two air holes 4 are upward, an ink inlet pipe (not shown in the drawings) is disposed on the ink inlet 8, the ink inlet pipe is connected with an ink inlet pump (not shown in the drawings), ink return pipes (not shown in the drawings) are disposed on the two ink return ports 5, and the ink return pumps (not shown in the drawings) are disposed on the ink return pipes. The two ink return ports 5 are bilaterally symmetrical by taking the ink inlet port 8 as a symmetrical point, so that ink can flow back more uniformly, the pressure in the ink cavity 9 can be balanced, and the serious problem of ink leakage and ink flying caused by large local ink pressure in the ink cavity 9 is avoided.

This technical scheme is through being provided with back the china ink pipe and returning the china ink pump on ink return mouth 5 to set up two bleeder vents 4, can avoid the big serious problem that leads to the scraper deformation scraper to scrape unclean unnecessary printing ink and leak the china ink flying ink of china ink chamber 9 internal ink pressure like this, the wearing and tearing of the closed piece of scraper 12 and china ink chamber 9 side also significantly reduce, thereby improved the life of scraper 12 and closed piece, reduce the time that unnecessary frequently changed, improve printing efficiency and effect.

The air hole 4 of the technical scheme is respectively communicated with the ink return port 5 and the external air pressure and is used for reducing the pressure in the ink cavity 9; the ink return port 5 is used for returning the ink to the ink barrel to make ink circulation; the ink tray 11 is used for receiving leaked ink; the ink inlet 8 is used for pumping ink into an inlet of the ink cavity 9; the anilox roller 6 is used for the printing device to transfer ink.

The working principle is as follows: ink is pumped out of the ink barrel by an ink inlet pump, so that the ink enters the ink cavity 9 from the ink inlet 8, the ink inlet 8 is arranged at the bottom of the middle of the ink cavity 9 and returns to the ink barrel from the ink return port 5 after being filled, the ink return port 5 is arranged at the upper parts of two sides of the ink cavity 9, and the ink return pipe of the ink return port 5 is provided with an ink return pump which is used for pumping the ink back to the ink barrel from the ink cavity 9; because the flow difference of the ink inlet pump and the ink return pump can form a negative pressure in the ink cavity 9, the air hole 4, the ink return port 5 and the ink cavity 9 are communicated, so the negative pressure is only slight, and the serious problems that the scraper with large pressure in the ink cavity 9 can not scrape redundant ink and ink leakage can not be solved by slight negative pressure. Because of only slight negative pressure, the pressure among the closed block on the side of the ink chamber 9, the scraper 12 and the anilox roller 6 is also smaller, and the abrasion of the scraper 12 and the closed block on the side of the ink chamber 9 is also greatly reduced, so that the service lives of the scraper 12 and the closed block are prolonged, the time for unnecessary frequent replacement is shortened, and the printing efficiency and effect are improved. The problem of differential pressure airflow is solved through the added air holes.

For example, in some embodiments, the first motor 2 for driving the anilox roller 6 is disposed on the left end surface of the mounting plate 1 on the left side. The rotation of the corrugated roll 6 is controlled by the first motor 2.

For example, in some embodiments, the rear side of the anilox roller 6 is provided with a plate cylinder 10 against which the anilox roller 6 abuts. The plate cylinder 10 is used for scraping off the ink on the surface of the anilox roller 6 to achieve an ink evening effect.

For example, in some embodiments, the second motor 3 for driving the plate cylinder 10 is provided behind the first motor 2. The rotation of the anilox roller 10 is controlled by a second motor 3.

For example, in some embodiments, the rear end of the ink chamber 9 is provided with two doctor blades 12 cooperating with the anilox roller 6.

For example, in some embodiments, the ink chamber 9 has a handle 7 thereon. The storage, transportation, installation and disassembly of the ink chamber 9 are facilitated by the handle 7.

In conclusion, the ink return pipe and the ink return pump are arranged on the ink return port, and the two air holes are formed, so that the serious problems that the scraper deforms and cannot scrape excessive ink and ink leakage and ink flying due to large ink pressure in the ink cavity can be avoided, the abrasion of the scraper and the sealing block on the side surface of the ink cavity is greatly reduced, the service lives of the scraper and the sealing block are prolonged, unnecessary frequent replacement time is shortened, and the printing efficiency and the printing effect are improved.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.

Claims

1. A closed negative pressure double-scraper ink chamber comprises two left and right parallel mounting plates, wherein an ink chamber, an anilox roller and an ink tray are arranged between the two mounting plates, and the closed negative pressure double-scraper ink chamber is characterized in that the anilox roller is arranged at the front side of an ink outlet of the ink chamber, the ink tray is arranged below the ink chamber and the anilox roller, an ink inlet is arranged in the middle of the ink chamber, ink return ports and air holes are arranged at the upper parts of the left side and the right side of the ink chamber, the openings of the two air holes are upward, an ink inlet pipe is arranged on the ink inlet, an ink inlet pump is connected to the ink inlet pipe, an ink return pipe is arranged on the two ink return ports, an ink return pump is arranged on the ink return pipe, and the two ink return ports are bilaterally symmetrical by taking the ink inlet ports as symmetrical points; the ink returning pump pumps the ink from the ink cavity to the ink barrel, and the flow difference between the ink inlet pump and the ink returning pump ensures that a negative pressure is formed in the ink cavity; the air hole, the ink return port and the ink chamber are communicated, so that the negative pressure is slight.

2. The closed negative pressure double-scraper ink chamber as claimed in claim 1, wherein a first motor for driving the anilox roller is arranged on the left end surface of the mounting plate on the left side.

3. The closed negative pressure double doctor blade ink chamber as claimed in claim 2, wherein a plate cylinder is provided on the rear side of the anilox roller, against which anilox roller abuts.

4. The enclosed negative pressure dual-doctor ink chamber of claim 3, wherein a second motor is provided behind the first motor for driving the plate cylinder.

5. The closed negative pressure double-scraper ink chamber of claim 1, wherein the back end of the ink chamber is provided with two scrapers which are matched with the anilox roller.

6. The closed negative pressure double-scraper ink chamber of claim 1, wherein a handle is provided on the ink chamber.