Flexographic plate ink printing device

Abstract

The utility model provides a flexographic plate ink printing device. The flexographic plate ink printing device comprises a rack, an ink conveying roller, an ink transfer roller, a printing plate roller, an impressing roller and an ink scraping mechanism. The ink conveying roller, the ink transfer roller, the forme roller and the impressing roller are rotationally installed on the inner wall of the rack in parallel, the ink conveying roller is located in an ink storage groove installed on the rack and makes contact with ink, the ink transfer roller is in clearance fit with the ink conveying roller, the forme roller is in clearance fit with the ink transfer roller and the impressing roller, and a printing material penetrates through the position between the forme roller and the impressing roller. The ink scraping mechanism is installed on the top of the rack and located above the impressing roller and comprises a scraping plate and a lifting mechanism, the lifting mechanism is installed on the top of the rack, and the top of the scraping plate is installed at the lifting end of the lifting mechanism. According to the utility model, the ink accumulated on the impressing roller is scraped off through the scraping plate arranged at the top of the rack, so that the ink accumulated on the impressing roller is prevented from polluting the back surface of a printing material and influencing the quality of a printed matter, and the efficiency of scraping off the ink on the impressing roller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a flexible plate water-ink printing device. Background Art

[0002] Flexographic ink printing is a direct rotary printing method that uses an elastic raised image plate. During printing, the ink roller 2 (rubber roller) in the ink tank first delivers the ink to the ink transfer roller 3 (anilox metal roller), and then the ink transfer roller 3 evenly and stably brushes the ink on the surface of the plate cylinder. When the printing material (such as plastic film) passes between the plate cylinder and the impression cylinder, the image on the plate is transferred to the printing material under pressure, thereby obtaining clear images. Due to the printing pressure and the change in the width of the printing material, after long-term printing work, the ink on the plate cylinder will gradually accumulate on the surface of the impression cylinder, thereby causing contamination on the side of the printing material in contact with the impression cylinder, affecting the quality of the printed product. At present, the ink on the impression cylinder is usually scraped off manually, but manual cleaning is inefficient, not clean, and has certain risks for workers. Utility Model Content

[0003] In order to overcome the problems existing in the background technology, the utility model provides a flexible ink printing device to solve the technical problems proposed in the background technology that ink will accumulate on the impression roller of the current printing device, thereby causing pollution to the back of the printing material, and manual scraping is inefficient and dangerous.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A flexographic ink printing device comprises a frame 1, an ink feed roller 2, an ink transfer roller 3, a plate roller 4, an impression roller 5, and an ink scraping mechanism 6; the ink feed roller 2, the ink transfer roller 3, the plate roller 4, and the impression roller 5 are mounted on the inner wall of the frame 1 and rotate parallel to each other, the ink feed roller 2 is located in an ink storage tank 7 mounted on the frame 1 and contacts with water ink, the ink transfer roller 3 is gap-matched with the ink feed roller 2, the plate roller 4 is gap-matched with the ink transfer roller 3 and the impression roller 5 respectively, and the printing material passes between the plate roller 4 and the impression roller 5; the ink scraping mechanism 6 is mounted on the top of the frame 1 and is located above the impression roller 5, and comprises a scraper 61 and a lifting mechanism 62, the lifting mechanism 62 is mounted on the top of the frame 1, the top of the scraper 61 is mounted on the lifting end of the lifting mechanism 62, the scraper 61 is located above the impression roller 5, and a motor Ⅰ8 drivingly connected to the impression roller 5 is mounted on the side wall of the frame 1.

[0006] Preferably, the lifting mechanism 62 includes a square lifting rod 621, a screw rod 622, a motor II 623, and a fixed bracket 624; the square lifting rod 621 is slidably installed on the top plate of the frame 1, the screw rod 622 is threadedly installed in a threaded hole opened at the upper end of the screw rod 622, and the fixed bracket 624 is installed on the top of the frame 1 in an inverted U-shaped structure, and the upper end of the screw rod 622 is transmission-connected to the motor II 623 installed on the top of the fixed bracket 624.

[0007] Preferably, a rubber strip 611 is provided at the lower end of the scraper 61 .

[0008] Preferably, negative pressure suction pipes 9 are evenly arranged on the side walls of the scraper 61 , and the negative pressure suction pipes 9 are connected to the negative pressure pump 11 installed on the top of the frame 1 through a connecting pipe 10 .

[0009] The beneficial effects of the utility model are as follows: the utility model scrapes off the ink accumulated on the embossing roller by means of a scraper installed on the top of the frame, thereby avoiding the ink accumulated on the embossing roller from contaminating the back of the printing material and affecting the quality of the printed product, improving the efficiency of scraping off the ink on the embossing roller, avoiding the use of manual cleaning with low efficiency, and the scraping by the device is highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Figure 2 It is a structural schematic diagram of the ink scraping mechanism.

[0012] Figure 3 It is a structural schematic diagram of the lifting mechanism.

[0013] Figure 4 yes Figure 2 A partial enlarged view of area A shown in FIG. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate the understanding of technicians.

[0015] like Figure 1-4As shown, the utility model provides a flexographic ink printing device, comprising a frame 1, an ink feed roller 2, an ink transfer roller 3, a plate roller 4, an impression roller 5, and an ink scraping mechanism 6; the ink feed roller 2, the ink transfer roller 3, the plate roller 4, and the impression roller 5 are mounted on the inner wall of the frame 1 for rotation parallel to each other, the ink feed roller 2 is located in an ink storage tank 7 mounted on the frame 1 and contacts with water ink, the ink transfer roller 3 is gap-matched with the ink feed roller 2, the plate roller 4 is gap-matched with the ink transfer roller 3 and the impression roller 5 respectively, and the printing material passes between the plate roller 4 and the impression roller 5; the ink scraping mechanism 6 is mounted on the top of the frame 1 and is located above the impression roller 5, and comprises a scraper 61 and a lifting mechanism 62, the lifting mechanism 62 is mounted on the top of the frame 1, the top of the scraper 61 is mounted on the lifting end of the lifting mechanism 62, the scraper 61 is located above the impression roller 5, and the side wall of the frame 1 is mounted with a motor Ⅰ8 that is transmission-connected with the impression roller 5. When the printing device is working normally, the ink in the ink storage tank 7 is rolled up and transferred to the ink transfer roller 3 through the ink supply roller 2. The ink transfer roller 3 dyes the ink on the plate roller 4. When the printing material passes between the plate roller 4 and the embossing roller 5, the pattern on the plate roller 4 is printed on the printing material. When the printing time is long, the ink on the plate roller 4 will dye the embossing roller 5, and then dye the printing material during the printing process, affecting the quality of the printed product. At this time, the scraper 61 is lowered to contact the embossing roller 5 through the lifting mechanism 62, and the embossing roller 5 is driven to rotate by the motor I8, so that the scraper 61 scrapes off the embossed part. After scraping, the scraper 61 is lifted by the lifting mechanism 62, so as not to affect the printing process. The utility model scrapes off the ink accumulated on the embossing roller 5 by means of a scraper 61 installed on the top of the frame 1, thereby preventing the ink accumulated on the embossing roller 5 from contaminating the back of the printing material and affecting the quality of the printed product, improving the efficiency of scraping off the ink on the embossing roller 5, avoiding the use of manual cleaning with low efficiency, and the scraping by the device is highly safe.

[0016] The lifting mechanism 62 includes a square lifting rod 621, a screw rod 622, a motor II 623, and a fixed bracket 624; the square lifting rod 621 is slidably mounted on the top plate of the frame 1, the screw rod 622 is threadedly mounted in a threaded hole opened at the upper end of the screw rod 622, and the fixed bracket 624 is mounted on the top of the frame 1 in an inverted U-shaped structure, and the upper end of the screw rod 622 is transmission-connected to the motor II 623 mounted on the top of the fixed bracket 624. The motor II 623 drives the screw rod 622 to rotate, so that the square lifting rod 621 drives the scraper 61 to move downward to contact the embossing roller 5 to scrape the ink on the embossing roller 5, thereby improving the efficiency and convenience of the movement of the scraper 61.

[0017] The lower end of the scraper 61 is provided with a rubber strip 611. The rubber strip 611 provided at the lower end of the scraper 61 contacts the embossing roller 5, so that the rubber strip 611 can contact the surface of the embossing roller 5 more closely, so that the rubber strip 611 can scrape the ink on the embossing roller 5 more cleanly, and avoid residual ink on the embossing roller 5.

[0018] Negative pressure suction tubes 9 are evenly arranged on the side walls of the scraper 61, and the negative pressure suction tubes 9 are connected to the negative pressure pump 11 installed on the top of the frame 1 through the connecting tube 10. While the scraper 61 scrapes the ink on the embossing roller 5, the negative pressure pump 11 forms negative pressure in the negative pressure suction tube 9 to suck and discharge the scraped ink, so as to prevent the scraped ink from being transferred into the printing machine to affect the printing process.

[0019] Working process:

[0020] When the printing device is working normally, the ink in the ink storage tank 7 is rolled up and transferred to the ink transfer roller 3 through the ink delivery roller 2. The ink transfer roller 3 dyes the ink on the plate roller 4. When the printing material passes between the plate roller 4 and the impression roller 5, the pattern on the plate roller 4 is printed on the printing material. When the printing time is long, the ink on the plate roller 4 will be dyed on the impression roller 5, so that during the printing process, it will be dyed on the printing material, affecting the quality of the printed product. At this time, the scraper 61 is lowered and contacted on the impression roller 5 through the lifting mechanism 62, and the impression roller 5 is driven to rotate by the motor Ⅰ8, so that the scraper 61 scrapes off the impression. After the scraping is completed, the scraper 61 is lifted by the lifting mechanism 62, so as not to affect the printing process. While the scraper 61 scrapes off the ink on the impression roller 5, the negative pressure pump 11 forms a negative pressure in the negative pressure suction tube 9, sucks and discharges the scraped ink, and avoids the scraped ink from being transferred into the printing machine to affect the printing process.

[0021] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A flexographic ink printing device, characterized in that: The invention comprises a frame (1), an ink delivery roller (2), an ink transfer roller (3), a printing plate roller (4), a printing roller (5), and an ink scraping mechanism (6); the ink delivery roller (2), the ink transfer roller (3), the printing plate roller (4), and the printing roller (5) are mounted on the inner wall of the frame (1) for rotation in parallel with each other; the ink delivery roller (2) is located in an ink storage tank (7) mounted on the frame (1) and is in contact with ink; the ink transfer roller (3) is in clearance with the ink delivery roller (2); the printing plate roller (4) is in clearance with the ink transfer roller (3) and the printing plate roller (5) respectively. The printing material passes between the printing plate roller (4) and the embossing roller (5); the ink scraping mechanism (6) is mounted on the top of the frame (1) and is located above the embossing roller (5), and comprises a scraper (61) and a lifting mechanism (62); the lifting mechanism (62) is mounted on the top of the frame (1); the top of the scraper (61) is mounted on the lifting end of the lifting mechanism (62); the scraper (61) is located above the embossing roller (5); and a motor I (8) drivingly connected to the embossing roller (5) is mounted on the side wall of the frame (1).

2. A flexographic ink printing device according to claim 1, characterized in that: The lifting mechanism (62) comprises a square lifting rod (621), a screw rod (622), a motor II (623), and a fixed bracket (624); the square lifting rod (621) is slidably mounted on the top plate of the frame (1) in an up-and-down manner, the screw rod (622) is threadedly mounted in a threaded hole opened at the upper end of the screw rod (622), the fixed bracket (624) is mounted on the top of the frame (1) in an inverted U-shaped structure, and the upper end of the screw rod (622) is drivingly connected to the motor II (623) mounted on the top of the fixed bracket (624).

3. A flexographic ink printing device according to claim 1 or 2, characterized in that: A rubber strip (611) is provided at the lower end of the scraper (61).

4. A flexographic ink printing device according to claim 3, characterized in that: Negative pressure suction pipes (9) are evenly arranged on the side walls of the scraper (61), and the negative pressure suction pipes (9) are connected to a negative pressure pump (11) installed on the top of the frame (1) via a connecting pipe (10).

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