A blowing device for printing ink groups of a gravure press

Abstract

The utility model discloses a kind of printing color group blowing devices of gravure press, it is related to gravure press technical field, including carrier plate, first ring, second ring, first air pipe on first ring, second air pipe on second ring;The blowing path of first air pipe is involved in the non-textual concave area on printing plate cylinder, the blowing path of second air pipe is involved in the textual concave area on printing plate cylinder.The utility model by setting detachable first air pipe and second air pipe, and clearly its non-textual concave area and textual concave area of printing plate cylinder are blown respectively, realize the processing of corresponding air flow intensity and corresponding accuracy requirement to different area in gravure printing.This blowing design not only can effectively remove extra ink without stopping, avoid the generation of edition fog or knife line and other printing defects, but also can carry out cooling treatment to the ink exceeding printing requirement, avoid destroying fine text, improve printing quality.

Description

Technical Field

[0001] This utility model relates to the field of gravure printing machine technology, specifically to a gravure printing machine printing color group blowing device. Background Technology

[0002] The core structural components of a gravure printing press (gravure printing machine) consist of a plate cylinder and an impression cylinder. The plate cylinder and impression cylinder can be arranged vertically, horizontally, or inclined. Each unit is equipped with one plate cylinder and one impression cylinder as standard, while some models use double impression cylinders to increase pressure. The plate cylinder has image recesses engraved on its surface. Part of the plate cylinder is immersed in the ink trough. As it rotates and passes through the ink trough, ink adheres to its surface, meaning both the image recesses and non-image recesses are covered with ink. A doctor blade then scrapes away the ink from the non-image recesses and excess ink from the image recesses. Subsequently, the ink in the image recesses is transferred to the substrate by the action of the impression cylinder. During printing, the doctor blade has two functions: first, to scrape away the ink from the non-image recesses; and second, to resist the impact of the ink and prevent ink from flowing out of the blade. Figure 1 A printing structure in the prior art is shown, wherein 101 represents a printing plate cylinder, 102 represents an impression cylinder, 103 represents an ink trough, 104 represents a doctor blade, and 105 represents a substrate.

[0003] In actual use, technicians found that after prolonged use, the pressure applied by the doctor blade to the cylinder surface decreases, resulting in a poorer removal effect on the ink adhering to the cylinder surface. This means that ink may remain in non-image recessed areas after being treated by the doctor blade, while image recessed areas may retain more ink than required for printing. The presence of the former ink can cause printing defects such as ink fogging or knife lines in non-image recessed areas, while the latter ink exceeding the required amount can become abnormally viscous due to the high temperature of the working environment, affecting the printing quality.

[0004] When defects such as squeegee fogging, blade lines, or poor printing quality occur, the entire production line is in a continuous production state and cannot be stopped to adjust the squeegee. Therefore, these printing defects such as squeegee fogging, blade lines, or poor printing quality will continue to exist on subsequent substrates, causing significant production losses.

[0005] To address this, we propose a gravure printing color group blowing device to remove ink from non-image areas when the doctor blade pressure is insufficient and the production line cannot be stopped. Utility Model Content

[0006] The purpose of this utility model is to solve the problems in the prior art by proposing a gravure printing machine printing color group blowing device. The blowing device, through the setting of the first air pipe and the second air pipe, can blow air to the non-image and image recessed areas respectively, so as to achieve the blowing off and cooling treatment of the ink on them respectively.

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A gravure printing machine printing color group blowing device, comprising:

[0009] Carrier plate;

[0010] The first insertion ring is located on the carrier plate;

[0011] The second insertion ring is located on the carrier plate;

[0012] The first air tube is detachably inserted into the first insert ring, and the air outlet faces the printing plate cylinder;

[0013] The second air tube is detachably inserted into the second insert ring, with the air outlet facing the printing plate cylinder;

[0014] When the first air pipe and the second air pipe are respectively installed on the corresponding insert ring, the air blowing path of the first air pipe intersects the non-image recessed area on the printing plate cylinder, and the air blowing path of the second air pipe intersects the image recessed area on the printing plate cylinder.

[0015] The air blowing path of the first air pipe and / or the second air pipe coincides with the tangent of the printing cylinder.

[0016] As a further embodiment of this utility model: the carrier plate is installed on the side of the printing plate cylinder, and the carrier plate can move toward or away from the printing plate cylinder, and the direction of movement of the carrier plate is perpendicular to the axis of the printing plate cylinder.

[0017] As a further embodiment of this utility model, the blower also includes a screw and slider mechanism, with the carrier plate disposed on the screw and slider mechanism and driven to move by the screw and slider mechanism.

[0018] As a further embodiment of this utility model: the carrier plate has two sets of slopes, and the two slopes are arranged in a figure-eight shape. The first insert ring and the second insert ring are respectively disposed on the two slopes, and the axial direction of the first insert ring and the second insert ring is parallel to the corresponding slope direction.

[0019] As a further embodiment of this utility model: two sets of support plates are movably hinged on the carrier plate, and the angles of the two sets of support plates are adjustable and they are arranged in a figure-eight inclined manner, with the upper surface of the support plate forming the slope.

[0020] As a further embodiment of this utility model: a telescopic rod is provided on the carrier plate, and the piston rod of the telescopic rod is movably connected to the lower plate surface of the support plate through a slider, so that the inclination of the support plate is adjusted when the telescopic rod extends or retracts.

[0021] As a further embodiment of this utility model: the first insert ring and / or the second insert ring are movably provided with two sets of clamping plates, and the two clamping plates are arranged along the length direction of the insert ring and in a relative layout, forming a limiting area between the two clamping plates that is adjustable in size and into which the air supply pipe can be inserted.

[0022] As a further embodiment of this utility model: a spring is embedded in the inner wall of the first insert ring and / or the second insert ring, and a clamping plate is mounted on the spring to achieve its movable connection inside the corresponding insert ring.

[0023] As a further embodiment of this utility model: guide slopes are provided on the inner side of the ends of both clamping plates, and the distance between the two guide slopes gradually increases from the middle of the clamping plates to the ends.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] By incorporating detachable first and second air pipes, specifically designed to blow air into the non-image and image recessed areas of the printing cylinder respectively, this design allows for the application of appropriate airflow intensity and precision to different areas in gravure printing. This blowing design not only effectively removes excess ink without stopping the printing process, preventing printing defects such as ink fogging or die lines, but also cools ink exceeding printing requirements, preventing damage to fine images and significantly improving print quality. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of a printing structure in the prior art;

[0028] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0030] Figure 4 This is a top view of the carrier plate structure in Embodiment 1 of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of any of the insertion rings and the trachea before assembly in Embodiment 3 of this utility model;

[0032] Figure 6This is a schematic diagram of the structure after any of the insertion rings and the trachea are assembled in Embodiment 3 of this utility model.

[0033] In the diagram: 101, printing cylinder; 102, impression cylinder; 103, ink trough; 104, doctor blade; 105, printing substrate;

[0034] 1. Carrier plate; 2. Slope; 3. Guide slope; 4. First air pipe; 5. Second air pipe; 6. Support plate; 7. Telescopic rod; 8. Clamping plate; 9. Spring; 10. Screw slider mechanism; 11. First insert ring; 12. Second insert ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] Example 1:

[0037] Based on existing technologies Figure 1 The present invention proposes a gravure printing machine color group blowing device based on the printing structure shown. Figure 2 and Figure 4 As shown, the blowing device includes a carrier plate 1 that can move towards or away from the printing structure. The carrier plate 1 can be slidably mounted on a worktable or frame, and its movement direction is perpendicular to the axis of the printing cylinder 101. It can be driven by any type of drive source in the prior art, such as a cylinder or hydraulic cylinder. However, to save energy, this application uses a lead screw and slider mechanism 10 to achieve the movement of the carrier plate 1. The specific connection and installation relationship is a conventional arrangement in the prior art, and will not be described further here to avoid unnecessary detail. In use, the technician drives the lead screw to rotate, which moves the carrier plate 1 closer to or away from the printing structure.

[0038] The carrier plate 1 is provided with a first insertion ring 11 and a second insertion ring 12. The first insertion ring 11 and the second insertion ring 12 are used for the insertion and installation of the first air pipe 4 and the second air pipe 5, respectively. It is necessary to ensure that after the first air pipe 4 and the second air pipe 5 are installed, their air outlets are facing the printing plate cylinder 101.

[0039] when Figure 2 When the doctor blade 104 in the indicated state experiences insufficient pressure, the poor cleaning effect of the doctor blade 104 will result in ink exceeding the printing requirements remaining in the image recessed areas on the printing cylinder 101, and ink remaining in the non-image recessed areas.

[0040] Based on this, the air blowing path of the first air pipe 4 intersects the non-image recessed area on the printing plate cylinder 101, and the air blowing path of the second air pipe 5 intersects the image recessed area on the printing plate cylinder 101. During production line operation, such as... Figure 2 As shown, the presence of the first air pipe 4 allows for air blowing on the printing cylinder 101, which has been pre-scraped away by the doctor blade 104. Since the air blowing path of the first air pipe 4 intersects with the non-image recessed areas on the printing cylinder, it can blow off any remaining ink that has not been completely scraped off, ensuring that the non-image recessed areas are free of ink and do not affect subsequent printing production. The presence of the second air pipe 5 allows for air blowing on the printing cylinder 101, which has been pre-scraped away by the doctor blade 104. Since the air blowing path of the second air pipe 5 intersects with the image recessed areas on the printing cylinder 101, it can cool down any excess ink in the image recessed areas, preventing the excess ink from becoming abnormally viscous due to high temperatures in the working environment. It should be noted that the air pressure and range of the gases blown out by the first air pipe 4 and the second air pipe 5 are controllable and can be adjusted for suitability according to actual applications.

[0041] exist Figure 2 In the state shown, in order to make the air blowing path of the first air pipe 4 and / or the second air pipe 5 coincide with the tangent of the printing plate cylinder 101, so as to produce a better blowing and cooling effect, the tangent coincidence position relationship can be preset, or the carrier plate 1 can be driven to move towards or away from the printing structure to adjust and achieve the corresponding tangent coincidence position relationship.

[0042] Taking the air blowing path of the first air pipe 4 as coinciding with the tangent of the printing plate cylinder 101 as an example, since the rotation direction of the printing plate cylinder 101 is clockwise, and the air blowing path of the first air pipe 4 is "sloping downward from left to right", the two are integrated together to form a "reverse spraying" method. This method can efficiently impact and remove excess ink on the printing plate cylinder 101, with strong impact and good removal effect.

[0043] Regarding the installation design of the first insert ring 11 and the second insert ring 12 on the carrier plate 1, this application provides two sets of slopes 2 on the top surface of the carrier plate 1. The two sets of slopes 2 are integrally formed with the carrier plate 1, and the two sets of slopes 2 are arranged in a V-shape. The first insert ring 11 and the second insert ring 12 are respectively disposed on the two slopes 2, and the axial directions of the first insert ring 11 and the second insert ring 12 are parallel to the corresponding slope direction. Figure 4 As shown, there are multiple first insert rings 11 and second insert rings 12, evenly distributed on the corresponding slope 2. In use, the appropriate number of air tubes can be inserted into the corresponding first insert rings 11 and second insert rings 12 according to the type of printing roller 101 and printing requirements.

[0044] Example 2:

[0045] like Figure 3 As shown, in order to precisely adjust the blowing path of the first air tube 4 and the second air tube 5, this application has two sets of support plates 6 movably hinged on the carrier plate 1. Both sets of support plates 6 are angle-adjustable and arranged in a V-shape. The upper surface of the support plate 6 forms the slope 2 mentioned above. Subsequently, by rotating the support plate 6, the position of the first air tube 4 or the second air tube 5 can be changed, thereby realizing the adjustment of the blowing path.

[0046] For the adjustment design of the position of the support plate 6, a telescopic rod 7 can be provided on the carrier plate 1. A groove is opened on the lower surface of the support plate 6, and a slider is slidably installed in the groove. The piston rod of the telescopic rod 7 is movably connected to the slider so that the tilt of the support plate 6 is adjusted when the telescopic rod 7 extends or retracts. It should be noted that in order to maintain any position of the piston rod on the telescopic rod 7, a fastening bolt can be provided on the telescopic rod 7 to lock the position of the piston rod, or the telescopic rod 7 can be set as an electric push rod, etc.

[0047] Example 3:

[0048] like Figures 5-6 As shown, the difference between this embodiment and any of the above embodiments is that this embodiment improves the first insertion ring 11 and / or the second insertion ring 12, so that the first insertion ring 11 and / or the second insertion ring 12 can be adapted to insert more sizes of endotracheal tubes. Specifically:

[0049] Taking the first insertion ring 11 as an example, multiple springs 9 (or other elastic components) are embedded in the inner wall of the first insertion ring 11 at one location. These multiple springs 9 are arranged along the length of the first insertion ring 11, and their ends are connected to a clamping plate 8. Multiple springs 9 are also embedded in the inner wall of the first insertion ring 11 at another location, and their ends are also connected to a clamping plate 8. Both clamping plates 8 are arranged along the length of the first insertion ring 11 and are in a relatively opposite configuration. An adjustable limiting area for the insertion of the first air tube 4 is formed between the two clamping plates 8. Figure 5 As shown, when the size of the first trachea 4 is smaller than the inner diameter of the first insertion ring 11, the presence of the limiting area allows the two clamping plates 8 to move away from each other during insertion, clamping and limiting the first trachea 4. The state after clamping and limiting can be determined by... Figure 6 To represent it.

[0050] Furthermore, in order to facilitate the insertion of the first air tube 4 into the limiting area, guide slopes 3 can be provided on the inner side of the ends of both clamps 8, and the distance between the two guide slopes 3 gradually increases from the middle to the end of the clamps 8.

[0051] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A gravure printing machine color group blowing device, characterized in that, include: Carrier plate (1); The first insertion ring (11) is disposed on the carrier plate (1); The second insertion ring (12) is disposed on the carrier plate (1); The first air tube (4) is detachably inserted into the first insert ring (11), and the air outlet faces the printing plate cylinder (101); The second air tube (5) is detachably inserted into the second insert ring (12), and the air outlet faces the printing plate cylinder (101); When the first air pipe (4) and the second air pipe (5) are respectively installed on the corresponding insert ring, the air blowing path of the first air pipe (4) intersects the non-image recessed area on the printing plate cylinder (101), and the air blowing path of the second air pipe (5) intersects the image recessed area on the printing plate cylinder (101). The air blowing path of the first air pipe (4) and / or the second air pipe (5) coincides with the tangent of the printing plate cylinder (101).

2. The gravure printing machine color group blowing device according to claim 1, characterized in that, The carrier plate (1) is installed on the side of the printing plate cylinder (101), and the carrier plate (1) can move toward or away from the printing plate cylinder (101). The direction of movement of the carrier plate (1) is perpendicular to the axis of the printing plate cylinder (101).

3. A gravure printing machine color group blowing device according to claim 1 or 2, characterized in that, The blower also includes a screw and slider mechanism (10), on which the carrier plate (1) is mounted and driven by the screw and slider mechanism (10).

4. A gravure printing machine color group blowing device according to claim 1 or 2, characterized in that, The carrier plate (1) has two sets of slopes (2), and the two slopes (2) are arranged in a figure-eight shape. The first insert ring (11) and the second insert ring (12) are respectively located on the two slopes (2), and the axial direction of the first insert ring (11) and the second insert ring (12) is parallel to the corresponding slope direction.

5. The gravure printing machine color group blowing device according to claim 4, characterized in that, Two sets of support plates (6) are movably hinged on the carrier plate (1), and the angle of both sets of support plates (6) is adjustable and they are arranged in a figure-eight tilt. The upper surface of the support plate (6) forms the slope (2).

6. The gravure printing machine color group blowing device according to claim 5, characterized in that, The carrier plate (1) is provided with a telescopic rod (7), and the piston rod of the telescopic rod (7) is movably connected to the lower plate surface of the support plate (6) through a slider, so that the inclination of the support plate (6) is adjusted when the telescopic rod (7) extends or retracts.

7. A gravure printing machine color group blowing device according to claim 1 or 2, characterized in that, The first insert ring (11) and / or the second insert ring (12) are provided with two sets of clamps (8), and the two clamps (8) are arranged along the length of the insert ring and are in a relative layout. An adjustable limiting area for the insertion of the air supply pipe is formed between the two clamps (8).

8. The gravure printing machine color group blowing device according to claim 7, characterized in that, The inner wall of the first insert ring (11) and / or the second insert ring (12) is provided with a spring (9), and the clamp (8) is mounted on the spring (9) to realize its movable connection inside the corresponding insert ring.

9. A gravure printing machine color group blowing device according to claim 7, characterized in that, Guide slopes (3) are provided on the inner side of the ends of the two clamps (8), and the distance between the two guide slopes (3) gradually increases from the middle to the end of the clamps (8).

Images