Flexographic printing unit ink scraping device with automatic cleaning scraper

Abstract

The utility model relates to the technical field of printing machines, in particular to a flexographic printing unit ink scraping device with an automatic cleaning scraper, which comprises a top plate, a camera module and a control end, the two ends of the top plate are in butt joint with rotary driving parts, the top plate is driven by the rotary driving parts to realize angle adjustment, a scraper part is arranged below the top plate, and the scraper part is connected with the camera module. The two ends of the scraper piece are rotationally connected with the top plates on the two sides. By means of the design that the winding rope assembly is matched with the servo air cylinders, automatic reset and angle adjustment of the scraper piece can be achieved, the servo air cylinders are connected with the scraper piece through the elastic pieces, stable contact pressure can be provided, and the scraper piece can be automatically reset and adjusted through the servo air cylinders. The hard friction between the scraper and the printing plate can be reduced through elastic buffering, the torsional spring structure of the winding rope assembly can assist the scraper piece to automatically return after action, long-time adhesion of printing ink is avoided, the manual cleaning frequency is reduced, and the production continuity is improved.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to a flexographic printing unit ink scraping device with an automatic cleaning scraper. Background Technology

[0002] In flexographic printing, the doctor blade removes excess ink from the printing plate to ensure the clarity and quality of the printed image. However, with prolonged operation, friction between the doctor blade and the printing plate, along with ink adhesion, can easily leave ink residue on the doctor blade surface, affecting the doctoring effect and even damaging the printing plate or reducing print quality.

[0003] Most existing doctor blade systems employ fixed or manually adjustable blade structures, lacking automatic cleaning functions for ink residue on the blade surface. This necessitates frequent machine stops for manual cleaning during printing, reducing production efficiency and increasing maintenance costs. Especially in high-speed printing environments, doctor blade wear and ink adhesion problems become more pronounced, severely impacting printing stability and continuity.

[0004] Therefore, a flexographic printing unit with an automatic cleaning squeegee is needed to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a flexographic printing unit ink scraping device with an automatic cleaning scraper to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flexographic printing unit ink scraping device with an automatic cleaning scraper includes a top plate, a camera module, and a control terminal. Rotary drive components are connected to both ends of the top plate, allowing for angle adjustment. A scraper component is located below the top plate, with both ends rotatably connected to the top plates on both sides. Servo cylinders are mounted at both ends of the upper surface of the top plate, with their ends extending through the top plate to the upper end of the scraper component and engaging with it via a docking end. An elastic element is provided between the end of the servo cylinder and the docking end. Winding rope assemblies are also provided at both ends of the upper surface of the top plate, with one end of the winding rope assembly penetrating the top plate and engaging with the scraper component.

[0008] As a preferred embodiment of this utility model, the rotation drive component includes a rotary cylinder, the output end of which is connected to a connecting plate, and the connecting plate is fixedly connected to the end of the top plate.

[0009] As a preferred embodiment of this utility model, the winding rope assembly includes a box body, a fixed shaft is fixedly connected inside the box body, an elastic shaft is rotatably connected to the outside of the fixed shaft, and a torsion spring is connected between the fixed shaft and the elastic shaft.

[0010] A connecting rope is wound around the outer side of the elastic shaft, and one end of the connecting rope is fixedly connected to the upper end of the scraper.

[0011] As a preferred embodiment of this utility model, the scraper is generally zigzag-shaped, and the inner side of the scraper is an arc surface made of elastic steel sheet. The scraper has a cavity inside, and the inner arc surface of the scraper has a plurality of ink scraping parts.

[0012] As a preferred embodiment of this utility model, the plurality of the ink scraping parts include an ink inlet groove a, an ink inlet groove b and a bottom ink inlet groove opened sequentially from top to bottom, and the lower ends of the ink inlet groove a and the ink inlet groove b are provided with sharp protrusions.

[0013] As a preferred embodiment of this utility model, the lower end of the scraper is provided with a downward protrusion on one side.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model device, through the combined design of the winding rope assembly and the servo cylinder, can realize the automatic reset and angle adjustment of the doctor blade. The servo cylinder is connected to the doctor blade through the elastic element, which can provide stable contact pressure and reduce the hard friction between the doctor blade and the printing plate through elastic buffer. The torsion spring structure of the winding rope assembly can assist the doctor blade to automatically return to its position after the action, avoid ink adhesion for a long time, reduce the frequency of manual cleaning, and improve production continuity.

[0016] 2. The doctor blade in this utility model adopts a zigzag design, with the inner arc surface made of elastic steel sheet, which can better fit the printing plate surface and enhance the uniformity of ink scraping; the combination structure of its internal cavity and the ink scraping part can guide excess ink to flow along the groove and collect it in a concentrated manner, while the sharp protrusion can scrape off stubborn residual ink, reduce the risk of printing plate contamination and damage, and ensure the clarity of printed images. Attached Figure Description

[0017] Figure 1 This is a first-view perspective perspective view of the present invention;

[0018] Figure 2 This is a second-view perspective perspective view of the present invention;

[0019] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4This is a cross-sectional schematic diagram of the present invention;

[0021] Figure 5 This is a schematic diagram of the connection of the elastic shaft in this utility model.

[0022] In the diagram: 1. Top plate; 2. Rotary cylinder; 3. Connecting plate; 4. Scraper; 5. Box body; 6. Servo cylinder; 7. Docking end; 8. Detachable bottom plate; 9. Elastic shaft; 10. Cavity; 11. Ink inlet a; 12. Ink inlet b; 13. Bottom ink inlet; 14. Lower protrusion; 15. Torsion spring; 16. Fixed shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] For an example, please refer to... Figure 1 , 23 and 4, a flexographic printing unit ink scraping device with an automatic cleaning scraper, includes a top plate 1, a camera module and a control terminal. Both ends of the top plate 1 are connected to a rotating drive component, and the top plate 1 can be adjusted in angle under the drive of the rotating drive component. A scraper component 4 is provided below the top plate 1, and both ends of the scraper component 4 are rotatably connected to the two sides of the top plate 1. Servo cylinders 6 are installed at both ends of the upper surface of the top plate 1. The ends of the two sides of the servo cylinders 6 extend through the top plate 1 to the upper end of the scraper component 4, and are connected to the scraper component 4 through the docking end 7. An elastic element is provided between the end of the servo cylinder 6 and the docking end 7. A winding rope assembly is also provided at both ends of the upper surface of the top plate 1, and one end of the winding rope assembly extends through the top plate 1 and is connected to the scraper component 4.

[0029] The rotary cylinders 2 at both ends of the top plate 1 are fixed to the top plate 1 through the connecting plate 3 connected to the output end. When the rotary cylinder 2 is started, it can drive the top plate 1 to rotate as a whole, thereby adjusting the contact angle between the doctor blade 4 and the printing plate. This design allows the doctor blade 4 to dynamically adjust its angle according to parameters such as printing speed and ink viscosity, adapting to the stability requirements of high-speed printing scenarios.

[0030] Please refer to Figure 1 , 2 3 and 4, the rotation drive includes a rotary cylinder 2, the output end of the rotary cylinder 2 is connected to a connecting plate 3, and the connecting plate 3 is fixedly connected to the end of the top plate 1.

[0031] Please refer to Figure 1 , 2 3 and 4, the winding rope assembly includes a box body 5, a fixed shaft 16 is fixedly connected inside the box body 5, an elastic shaft 9 is rotatably connected to the outside of the fixed shaft 16, and a torsion spring 15 is connected between the fixed shaft 16 and the elastic shaft 9; a connecting rope is wound around the outside of the elastic shaft 9, and one end of the connecting rope is fixedly connected to the upper end of the scraper 4.

[0032] The end of the servo cylinder 6 on the upper surface of the top plate 1 penetrates the top plate 1 and cooperates with the upper end of the doctor blade 4 through the docking end 7. The servo cylinder 6 can drive the doctor blade 4 to move up and down, controlling its contact pressure with the printing plate. At the same time, the elastic element set between the end of the servo cylinder 6 and the docking end 7 can buffer rigid collisions, reduce friction damage between the doctor blade 4 and the printing plate, and extend the life of the component.

[0033] The winding rope assembly on the top plate 1 is connected to the upper end of the scraper 4 via a connecting rope. When the scraper 4 is driven downward by the servo cylinder 6, the connecting rope is stretched, and the elastic shaft 9 rotates around the fixed shaft 16 and compresses the torsion spring 15. When the servo cylinder 6 retracts and resets, the torsion spring 15 releases its elastic potential energy, causing the elastic shaft 9 to rotate in the opposite direction to wind the connecting rope, assisting the scraper 4 to return to its original position quickly. The force of the torsion spring 15 and the contact force of the servo cylinder 6 work together to form a floating contact.

[0034] The doctor blade 4 is generally zigzag-shaped, and the inner side of the doctor blade 4 is an arc surface made of elastic steel sheet. The doctor blade 4 has a cavity 10 inside, and the inner arc surface of the doctor blade 4 is provided with several ink scraping parts. The several ink scraping parts include an ink inlet groove a11, an ink inlet groove b12 and a bottom ink inlet groove 13 opened from top to bottom. The lower ends of the ink inlet groove a11 and the ink inlet groove b12 are provided with sharp protrusions, and a lower protrusion 14 is provided on one side of the lower end of the doctor blade 4.

[0035] The doctor blade 4 is curved in shape, with an inner arc surface made of elastic steel sheet, which can closely fit the printing plate surface and improve the uniformity of ink scraping. Its internal cavity 10 works in conjunction with the surface scraping part.

[0036] Excess ink flows downwards along ink inlet grooves a11 and b12, where sharp protrusions at the lower ends can scrape away stubborn ink residue. The bottom ink inlet groove 13 further collects bottom ink, reducing splashing. Furthermore, the lower protrusion 14 at the lower end of the doctor blade 4 enhances edge scraping ability, preventing ink residue during high-speed printing and ensuring print quality.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexographic printing unit ink scraping device with an automatic cleaning scraper, comprising a top plate (1), a camera module, and a control terminal, characterized in that: Both ends of the top plate (1) are connected to a rotating drive component. The top plate (1) can be adjusted in angle under the drive of the rotating drive component. A scraper component (4) is provided below the top plate (1). The two ends of the scraper component (4) are rotatably connected to the top plates (1) on both sides. Servo cylinders (6) are installed at both ends of the upper surface of the top plate (1). The ends of the servo cylinders (6) on both sides extend through the top plate (1) to the upper end of the scraper (4) and are connected to the scraper (4) through the docking end (7). An elastic element is provided between the end of the servo cylinder (6) and the docking end (7). A winding rope assembly is also provided at both ends of the upper surface of the top plate (1). One end of the winding rope assembly extends through the top plate (1) and is connected to the scraper (4).

2. The flexographic printing unit ink scraping device with automatic cleaning scraper according to claim 1, characterized in that: The rotation drive includes a rotary cylinder (2), the output end of which is connected to a connecting plate (3), and the connecting plate (3) is fixedly connected to the end of the top plate (1).

3. The flexographic printing unit ink scraping device with automatic cleaning scraper according to claim 2, characterized in that: The winding rope assembly includes a box (5), a fixed shaft (16) is fixedly connected inside the box (5), an elastic shaft (9) is rotatably connected to the outside of the fixed shaft (16), and a torsion spring (15) is connected between the fixed shaft (16) and the elastic shaft (9). A connecting rope is wound around the outer side of the elastic shaft (9), and one end of the connecting rope is fixedly connected to the upper end of the scraper (4).

4. The flexographic printing unit ink scraping device with automatic cleaning scraper according to any one of claims 1-3, characterized in that: The scraper (4) is generally zigzag-shaped, and the inner side of the scraper (4) is an arc surface, which is made of elastic steel sheet. The scraper (4) has a cavity (10) inside, and the inner arc surface of the scraper (4) is provided with several ink scraping parts.

5. The flexographic printing unit ink scraping device with automatic cleaning scraper according to claim 4, characterized in that: The aforementioned ink scraping section includes an ink inlet groove a (11), an ink inlet groove b (12), and a bottom ink inlet groove (13) sequentially opened from top to bottom. The lower ends of the ink inlet groove a (11) and the ink inlet groove b (12) are provided with sharp protrusions.

6. The flexographic printing unit ink scraping device with automatic cleaning scraper according to claim 5, characterized in that: The scraper (4) has a lower protrusion (14) on one side of its lower end.

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