Ink air knife removal device
By designing a detachable mounting base and an adjustable-angle air knife head on the gravure printing press, the problems of filament dragging and inconvenient ink removal on the printing roller are solved, enabling flexible adjustment and uniform air blowing, thus improving the removal effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI HUOSHAN YALI PACKING MATERIAL CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-06-19
Smart Images

Figure CN224375106U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ink printing technology for wine box cardboard, specifically an ink air knife removal device. Background Technology
[0002] In the processing of various types of cardboard, such as wine boxes, gravure printing machines play a crucial role. They can accurately complete the printing work on the surface of cardboard according to the diverse needs of customers. Among them, the printing roller of the gravure printing machine is an important component for ink transfer. After the printing film is transported, the surface of the printing roller often has impurities such as ink smears and ink scraping.
[0003] Currently, the industry commonly uses a relatively traditional method to remove filaments and ink scraping from printing rollers: a blower is fixed to the doctor blade holder, with one end connected to an external fan and the other end aimed at the area where the filaments and ink need to be removed. However, this traditional method has many insurmountable drawbacks.
[0004] First, the air blower is fixed in a specific position on the doctor blade holder, and its non-adjustable position makes it difficult for operators to perform flexible and precise operations based on the specific residual impurities in different locations on the printing roller during actual cleaning operations, resulting in extremely inconvenient cleaning work. Second, the air blown out of the air blower is in a columnar shape, and although it diffuses outward to some extent, the overall diffusion range is extremely limited. This greatly restricts its cleaning range for dragging ink and scraping ink, making it difficult to fully and effectively cover the areas on the printing roller surface that need cleaning, thus seriously affecting the cleaning effect.
[0005] Based on the series of problems exposed by the traditional cleaning methods, there is an urgent need to make innovative improvements to the existing filament removal and ink scraping devices in order to improve cleaning efficiency and quality. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides an ink air knife removal device, which solves the problems mentioned in the background art, realizes the convenience and flexibility of the device in use, significantly expands the range of ink removal and scraping, and thus greatly improves the removal effect.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] Overall structure: includes a mounting base, which is detachably mounted on the doctor blade holder of the gravure printing machine. One side of the mounting base is connected to an air pipe, and the other end of the air pipe is connected to an external fan. At least one gas control component is mounted on the mounting base, and an adjustable-angle air knife head is mounted on the gas control component.
[0009] The mounting base features a detachable design: a magnet is mounted on the side of the mounting base, which is made of iron.
[0010] Internal interconnection design: The mounting base has an internal cavity, the air pipe is connected to the cavity wall, and the gas control component is connected to the cavity.
[0011] Composition of the gas control component: The gas control component includes a control tube, one end of which is connected to the cavity and the other end of which is connected to the air knife head. A regulating valve is installed on one side of the control tube.
[0012] Connection between control tube and air knife head: In order to connect the control tube and the air knife head, a connecting tube is provided between the control tube and the air knife head.
[0013] Design of the connecting tube: In order to achieve angle adjustment and anti-slip, the connecting tube is a gooseneck tube and is designed in a bamboo joint shape.
[0014] Air knife head design: The air knife head is shovel-shaped, with an air cavity inside. The air cavity is connected to the other end of the connecting pipe. The head end of the air knife head has several air holes arranged at equal intervals, which are connected to the air cavity.
[0015] Air guide vane design: In order to achieve air guidance, an air guide vane is fixed between two adjacent air holes.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] 1. The mounting base can be detached by using the magnetic attraction between the magnet and the doctor blade holder. This allows the operator to quickly and flexibly adjust the installation position of the air knife device according to the specific working conditions of the gravure printing press roller and the location where the drag lines and ink need to be removed. This greatly improves the ease of use and flexibility of the device and adapts to the needs of different working scenarios.
[0018] 2. The air holes on the air knife head are arranged in a linear pattern, which expands the air blowing range and can blow air to any position on each printing plate of each group. This solves the problems of uneven blowing and local blowing of traditional tubular air blowers, and improves the effect of eliminating smearing and cleaning ink. Attached Figure Description
[0019] Figure 1 This is a top view of the present invention installed on a scraper holder (two gas control components are installed on a mounting base);
[0020] Figure 2 The three-dimensional representation of this utility model Figure 1 (One gas control unit is mounted on one mounting base);
[0021] Figure 3 The three-dimensional representation of this utility model Figure 2 (One gas control unit is mounted on one mounting base);
[0022] Figure 4 This is a perspective view of the air knife head of this utility model;
[0023] Figure 5 This is a partial perspective view of the air knife head of this utility model;
[0024] Figure 6 This is a partial sectional view of the main view of this utility model.
[0025] Reference numerals in the attached drawings: 1. Mounting base; 1-1. Cavity; 2. Air pipe; 3. Air knife head; 3-1. Air cavity; 3-2. Air hole; 4. Magnet block; 5. Control pipe; 6. Regulating valve; 7. Connecting pipe; 8. Air guide plate; X. Scraper holder; Y. Printing shaft; Z. Printing film. Detailed Implementation
[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0027] like Figure 1-3 As shown in the first embodiment, this utility model provides an ink air knife removal device, including a mounting base 1. The mounting base 1 is detachably mounted on the doctor blade holder X of a gravure printing machine. One side of the mounting base 1 is connected to an air pipe 2, and the other end of the air pipe 2 is connected to an external fan. The inner diameter of the air pipe 2 can be selected as 20mm to introduce an air source. At least one gas control component is installed on the mounting base 1, and an adjustable-angle air knife head 3 is installed on the gas control component. Figure 1 The diagram shows two gas control components installed on the mounting base 1. If there are multiple gas control components, they can be installed at different positions on the mounting base 1, so that one gas source can provide air power to multiple air knife heads 3.
[0028] like Figure 1 As shown, in order to make the mounting base 1 detachable, a magnet block 4 is installed on the side of the mounting base 1. The mounting base 1 is an iron base. By utilizing the magnetic attraction between the magnet block 4 and the iron base, the mounting base 1 can be quickly and stably fixed on the scraper frame X. When disassembly is required, it can also be easily separated, which greatly improves the convenience of installation and disassembly of the device and allows operators to flexibly adjust the installation position of the device according to actual work needs.
[0029] like Figure 6 As shown, in order to achieve the connection between the mounting base 1 and the air pipe 2, a cavity 1-1 is opened inside the mounting base 1, the air pipe 2 is connected to the cavity wall of the cavity 1-1, and the gas control component is connected to the cavity 1-1.
[0030] like Figure 6 As shown, in this utility model, the gas control component includes a control tube 5. One end of the control tube 5 is connected to the cavity 1-1, and the other end is connected to the air knife head 3. A regulating valve 6 is installed on one side of the control tube 5. The regulating valve 6 is a prior art small manual valve, model SMCAS2000-01. By rotating the regulating knob outside the regulating valve 6, the air volume of the air hole 3-2 can be precisely adjusted. The regulating knob is equipped with clear scale markings, and the user can accurately adjust the air volume according to actual needs. The scale range is from 0 to 10, which correspond to different air volume levels. Thus, according to the specific situation of residual impurities at different positions on the printing roller Y, the air force blown out by the air knife head 3 can be flexibly adjusted to achieve the best cleaning effect.
[0031] like Figure 6 As shown, in order to connect the control pipe 5 and the air knife head 3, a connecting pipe 7 is connected between the control pipe 5 and the air knife head 3. In order to achieve angle adjustment and anti-slip of the connecting pipe 7, the connecting pipe 7 is a gooseneck tube, which makes the connecting pipe 7 have good flexibility and can easily adjust the angle of the air knife head 3 to adapt to the cleaning needs of different positions. The connecting pipe 7 is designed in a bamboo joint shape, which increases the friction of the connecting pipe 7. After the angle is adjusted, it can remain stable and is not prone to automatic angle deviation, ensuring that the air knife head 3 can always be aligned with the position where impurities need to be removed.
[0032] like Figure 4-5 As shown in the second embodiment, based on the first embodiment, the air knife head 3 is shovel-shaped. This shape can better fit the surface curve of the printing roller Y, so that the airflow blown from the air knife head 3 can more evenly and comprehensively cover the area of the printing roller Y surface that needs to be cleaned of impurities. The air knife head 3 has an air cavity 3-1 inside, which is connected to the other end of the connecting pipe 7. The head end of the air knife head 3 has several air holes 3-2 arranged at equal intervals, which are connected to the air cavity 3-1. The diameter of the air hole 3-2 is generally selected according to the required gas flow rate and blowing effect, for example, a diameter of 1 mm. The distance between two adjacent air holes 3-2 is also carefully calculated and designed, and is set to a distance of 5 mm to ensure that the blown airflow can form a uniform and continuous blowing area.
[0033] To achieve airflow guidance, an air guide plate 8 is fixed between two adjacent air holes 3-2. The presence of the air guide plate 8 can effectively limit and guide the airflow blown out from the air hole 3-2, so that the airflow can act more concentratedly and evenly on the surface of the printing roller Y, thereby improving the cleaning efficiency and effect.
[0034] The principle of this device is as follows: In actual use, the external fan is started, and the gas generated by the fan enters the cavity 1-1 of the mounting base 1 through the air pipe 2. Then, after being regulated by the control pipe 5 and the regulating valve 6, it enters the connecting pipe 7 and is finally blown out through the air hole 3-2 of the air knife head 3. The operator can flexibly adjust the air volume and pressure of the air hole 3-2 by rotating the adjusting knob of the regulating valve 6 according to the actual cleaning needs. At the same time, since the connecting pipe 7 is a gooseneck tube and is set in a bamboo joint shape, the operator can easily adjust the angle of the air knife head 3 to accurately align it with the position on the printing roller where the drag and ink need to be removed. The large-area linear airflow blown out by the air holes 3-2 arranged in a linear pattern on the air knife head 3 can thoroughly and evenly clean the surface of the printing roller, ensuring the cleanliness of the next printing film Z.
[0035] 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. An ink air knife removal device characterized by: Includes a mounting base (1), which is detachably mounted on the scraper holder (X) of the gravure printing machine. One side of the mounting base (1) is connected to an air pipe (2), and the other end of the air pipe (2) is connected to an external fan. At least one gas control component is installed on the mounting base (1), and an adjustable air knife head (3) is installed on the gas control component.
2. An ink air knife removal device according to claim 1, wherein: A magnet (4) is mounted on the side of the mounting base (1), and the mounting base (1) is an iron base.
3. An ink air knife removal device according to claim 2, wherein: The mounting base (1) has a cavity (1-1) inside, the air pipe (2) is connected to the cavity wall of the cavity (1-1), and the gas control component is connected to the cavity (1-1).
4. An ink air knife removal device according to claim 3, wherein: The gas control component includes a control tube (5), one end of which is connected to the cavity (1-1) and the other end is connected to the air knife head (3). A regulating valve (6) is installed on one side of the control tube (5).
5. An ink air blade removal device according to claim 4, wherein: The control tube (5) is connected to the air knife head (3) by a connecting tube (7).
6. An ink air blade removal device according to claim 5, wherein: The connecting pipe (7) is a gooseneck pipe, and the connecting pipe (7) is arranged in a bamboo joint shape.
7. An ink air blade removal device according to claim 5, wherein: The air knife head (3) is shovel-shaped and has an air cavity (3-1) inside. The air cavity (3-1) is connected to the other end of the connecting pipe (7). The head end of the air knife head (3) has several air holes (3-2) arranged at equal intervals. The air holes (3-2) are connected to the air cavity (3-1).
8. An ink air blade removal device according to claim 7, wherein: A guide vane (8) is fixed between two adjacent air holes (3-2).