A gloss printing assembly for a flat bed press

Abstract

The utility model discloses a varnish printing assembly for flat -bed printing machine, including printing machine casing, the inside installation of printing machine casing has printing roll, paper transmission roll and intermediate rubber cylinder, printing roll is located between paper transmission roll and intermediate rubber cylinder and is mutually pasted with paper transmission roll, intermediate rubber cylinder, the inside installation of printing machine casing still has ink supply pipe and water supply pipe, ink supply pipe, water supply pipe are located respectively at the both sides of intermediate rubber cylinder, and ink supply pipe, water supply pipe are pasted with intermediate rubber cylinder, the below of intermediate rubber cylinder is equipped with ink recovery board, and both ends of ink recovery board are fixed with printing machine casing inner wall, the bottom of ink recovery board is equipped with a plurality of collection holes, and the bottom of collection hole is fixed with recovery pipe. The utility model discloses utilize ink recovery board to the ink that intermediate rubber cylinder surface drops carries out the concentrated storage, recovers the ink through collection hole, recovery pipe subsequently.

Description

Technical Field

[0001] This utility model relates to the field of flatbed printing technology, specifically to a varnish printing component for a flatbed printing machine. Background Technology

[0002] Lithographic printing is an indirect printing method based on the principle of oil and water repulsion. It utilizes the properties of the image area of ​​the printing plate being oleophilic and the non-image area being hydrophilic to achieve image transfer. A typical example is offset printing. Its printing process requires the use of an intermediate rubber roller, through which water and ink supply devices selectively wet and ink the image, ultimately transferring the image to the substrate.

[0003] In the process of flatbed printing, the ink sprayed on the printing roller will drip off due to the rotation of the printing roller. The dripping ink will contaminate the inside of the equipment and cause waste. Therefore, it does not meet the existing requirements. To address this, we propose a varnish printing component for flatbed printing machines. Utility Model Content

[0004] The purpose of this invention is to provide a varnish printing component for a flatbed printing machine, in order to solve the problem mentioned in the background art that during the flatbed printing process, the ink sprayed on the printing roller will drip off due to the rotation of the printing roller, and the dripping ink will contaminate the inside of the equipment and cause waste.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a varnish printing assembly for a flatbed printing press, comprising a printing press housing, wherein a printing roller, a paper transport roller, and an intermediate rubber roller are installed inside the printing press housing, the printing roller is located between the paper transport roller and the intermediate rubber roller and is in close contact with the paper transport roller and the intermediate rubber roller, and an ink supply pipe and a water supply pipe are also installed inside the printing press housing, the ink supply pipe and the water supply pipe are respectively located on both sides of the intermediate rubber roller and are in close contact with the intermediate rubber roller, an ink recovery plate is provided below the intermediate rubber roller, the two ends of the ink recovery plate are fixed to the inner wall of the printing press housing, a plurality of collection holes are provided through the bottom of the ink recovery plate, and a recovery pipe is fixed to the bottom end of the collection hole, the recovery pipe and the collection hole are linearly arrayed along the length direction of the ink recovery plate.

[0006] Preferably, an ink tube and a water tube are fixed on one side of the printing press housing, and one end of the ink tube and the water tube penetrates through the printing press housing and is respectively fixed to the end of the ink supply tube and the water supply tube.

[0007] Preferably, the bottom edge of the ink recycling plate is also fixed with an inclined plate, which is tilted upward at a 60-degree angle.

[0008] Preferably, an electromagnet is fixed to the top of the ink recycling plate, and a magnet is also slidably installed on the top of the ink recycling plate. When the electromagnet is energized, it magnetically attracts the magnet.

[0009] Preferably, a push-out spring is fixed between the electromagnet and the magnet. The magnetic attraction force of the electromagnet to the magnet is greater than the elasticity of the push-out spring. The elasticity of the push-out spring can separate the magnet from the electromagnet after the electromagnet is de-energized.

[0010] Preferably, a scraper is fixed to one end of the magnet, and the bottom of the scraper is provided with a flow-guiding arc surface.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention utilizes an ink recovery plate to collect ink dripping from the surface of the intermediate rubber roller. The ink is then recovered through a collection hole and a recovery pipe, thus preventing ink dripping from the surface of the intermediate rubber roller and contaminating the paper and equipment. Furthermore, the recovered ink can be reused multiple times, avoiding ink waste. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the connection between the printing roller, paper transfer roller, and intermediate rubber roller of this utility model.

[0015] Figure 3 This is a cross-sectional view of the ink recycling plate of this utility model;

[0016] Figure 4 This is a partial schematic diagram of the ink recovery plate of this utility model.

[0017] In the diagram: 1. Printing press housing; 2. Ink supply pipe; 3. Printing roller; 4. Paper transfer roller; 5. Intermediate rubber roller; 6. Ink recovery plate; 7. Inclined plate; 8. Recovery pipe; 9. Water supply pipe; 10. Ink pipe; 11. Clean water pipe; 12. Collection hole; 13. Electromagnet; 14. Guide arc surface; 15. Magnet; 16. Ejection spring; 17. Scraper. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] like Figures 1 to 4As shown, a varnish printing assembly for a flatbed printing machine includes a printing machine housing 1. Inside the printing machine housing 1, a printing roller 3, a paper transport roller 4, and an intermediate rubber roller 5 are installed. The printing roller 3 is located between the paper transport roller 4 and the intermediate rubber roller 5 and is in close contact with the paper transport roller 4 and the intermediate rubber roller 5. Inside the printing machine housing 1, an ink supply pipe 2 and a water supply pipe 9 are also installed. The ink supply pipe 2 and the water supply pipe 9 are located on both sides of the intermediate rubber roller 5 and are in close contact with the intermediate rubber roller 5. An ink pipe 10 and a water pipe 11 are fixed on one side of the printing machine housing 1. One end of the ink pipe 10 and the water pipe 11 penetrates the printing machine housing 1 and is fixed through and through the ends of the ink supply pipe 2 and the water supply pipe 9, respectively.

[0020] Below the middle rubber roller 5 is an ink recovery plate 6. An inclined plate 7 is also fixed to the bottom edge of the ink recovery plate 6. The inclined plate 7 is tilted upward at a 60-degree angle. The inclined plate 7 is used to protect the bottom edge of the ink recovery plate 6 to prevent excessive ink accumulation from exceeding the bottom edge of the ink recovery plate 6 and overflowing.

[0021] The two ends of the ink recovery plate 6 are fixed to the inner wall of the printing press housing 1. Multiple collection holes 12 are provided through the bottom of the ink recovery plate 6. A recovery tube 8 is fixed to the bottom of the collection hole 12. The recovery tube 8 and the collection hole 12 are linearly arrayed along the length of the ink recovery plate 6. The ink dripping from the surface of the middle rubber roller 5 is collected by the ink recovery plate 6 and then recovered through the collection hole 12 and the recovery tube 8.

[0022] An electromagnet 13 is fixed to the top of the ink recovery plate 6, and a magnet 15 is also slidably installed on the top of the ink recovery plate 6. When the electromagnet 13 is energized, it magnetically attracts the magnet 15. An ejector spring 16 is fixed between the electromagnet 13 and the magnet 15. The magnetic attraction force of the electromagnet 13 to the magnet 15 is greater than the elasticity of the ejector spring 16. When the electromagnet 13 is de-energized, the elasticity of the ejector spring 16 can separate the magnet 15 from the electromagnet 13, realizing the extension and retraction of the magnet 15, thereby controlling the position of the scraper 17.

[0023] A scraper 17 is fixed to one end of the magnet 15. The bottom of the scraper 17 is provided with a flow-guiding arc surface 14. The scraper 17 contacts the outer surface of the middle rubber roller 5 to scrape off excess ink from the outer surface of the middle rubber roller 5. The scraped ink falls along the flow-guiding arc surface 14 onto the surface of the ink recovery plate 6 and is eventually recovered by the recovery pipe 8.

[0024] During flatbed printing, ink supply pipe 2 and water supply pipe 9 supply ink and water to the intermediate rubber roller 5, respectively. The intermediate rubber roller 5 then transfers the ink to the printing roller 3. The printing roller 3 prints the printed material passing between the printing roller 3 and the paper transfer roller 4. During the printing process, excess ink on the surface of the intermediate rubber roller 5 drips down as the roller rotates. The ink falls into the ink recovery plate 6 and accumulates along its surface towards the bottom. The accumulated ink enters the recovery pipe 8 through the collection hole 12 and is then recovered by the recovery pump connected to the recovery pipe 8. The ink recovery plate 6 collects the ink dripping from the surface of the intermediate rubber roller 5, and the ink is then recovered through the collection hole 12 and the recovery pipe 8. This prevents ink dripping from the surface of the intermediate rubber roller 5 from contaminating the paper and equipment, and the recovered ink can be reused multiple times, avoiding ink waste.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A varnish printing assembly for a flatbed printing press, comprising a printing press housing (1), characterized in that: The printing press housing (1) is equipped with a printing roller (3), a paper transport roller (4) and an intermediate rubber roller (5). The printing roller (3) is located between the paper transport roller (4) and the intermediate rubber roller (5) and is in close contact with the paper transport roller (4) and the intermediate rubber roller (5). The printing press housing (1) is also equipped with an ink supply pipe (2) and a water supply pipe (9). The ink supply pipe (2) and the water supply pipe (9) are located on both sides of the intermediate rubber roller (5) and are in close contact with the intermediate rubber roller (5). An ink recovery plate (6) is provided below the intermediate rubber roller (5). The two ends of the ink recovery plate (6) are fixed to the inner wall of the printing press housing (1). The bottom of the ink recovery plate (6) is provided with multiple collection holes (12). The bottom of the collection holes (12) is fixed with a recovery pipe (8). The recovery pipe (8) and the collection holes (12) are linearly arrayed along the length of the ink recovery plate (6).

2. The varnish printing assembly for a flatbed printing machine according to claim 1, characterized in that: An ink tube (10) and a water tube (11) are fixed on one side of the printing press housing (1). One end of the ink tube (10) and the water tube (11) penetrates the printing press housing (1) and is fixed to the end of the ink supply tube (2) and the water supply tube (9), respectively.

3. The varnish printing assembly for a flatbed printing machine according to claim 1, characterized in that: The bottom edge of the ink recycling plate (6) is also fixed with an inclined plate (7), which is tilted upward at sixty degrees.

4. The varnish printing assembly for a flatbed printing machine according to claim 1, characterized in that: An electromagnet (13) is fixed to the top of the ink recycling plate (6), and a magnet (15) is also slidably installed on the top of the ink recycling plate (6). When the electromagnet (13) is energized, it magnetically attracts the magnet (15).

5. A varnish printing assembly for a flatbed printing machine according to claim 4, characterized in that: An ejector spring (16) is fixed between the electromagnet (13) and the magnet (15). The magnetic attraction force of the electromagnet (13) to the magnet (15) is greater than the elasticity of the ejector spring (16). The elasticity of the ejector spring (16) can separate the magnet (15) from the electromagnet (13) after the electromagnet (13) is de-energized.

6. The varnish printing assembly for a flatbed printing machine according to claim 5, characterized in that: One end of the magnet (15) is fixed with a scraper (17), and the bottom of the scraper (17) is provided with a flow-guiding arc surface (14).

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