Flexographic printing rack of gloss oil leveling paper path
By setting multiple transfer rollers and cylinders in the flexographic printing frame in cooperation with the pressure rollers, the varnish is fully leveled and the paper surface is cleaned, which solves the problem of varnish being difficult to level and improves printing quality and process compatibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-03-24
AI Technical Summary
Existing flexographic printing presses often fail to achieve adequate leveling of the varnish after printing, leading to a decline in print quality.
Design a flexographic printing frame with a varnish leveling paper path. By setting up multiple transfer rollers and cooperating with cylinders and pressure rollers, a long paper path leveling process is achieved, and airflow is used to clean the surface of the printed paper, reducing dust and impurities.
It improves printing quality, enhances the process compatibility of printing presses, reduces paper looseness and surface dust, and expands the range of process options for printing presses.
Smart Images
Figure CN224028601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flexographic printing machines, specifically a flexographic printing machine frame with a varnish leveling paper path. Background Technology
[0002] A flexographic printing press, also known as a flexible plate printing press, is a type of printing equipment. Its printing section is the core of the flexographic printing press, and the arrangement of these sections directly affects operational performance, print quality, printing speed, and the range of applications.
[0003] In the flexographic printing process, the application of varnish plays a crucial role in enhancing the overall effect of printed materials. Flexographic varnish is primarily used to form a protective film on the surface of the printed material. This film not only increases the gloss of the printed material, making the image more vibrant, but also improves its abrasion resistance, water resistance, and stain resistance.
[0004] Existing flexographic printing presses typically dry the paper directly after ink printing, following a short paper path. However, during use and observation, it was found that this design makes it difficult for the varnish on the surface of the printed paper to be fully leveled, thus reducing the printing quality of the flexographic printing press.
[0005] Therefore, a flexographic printing press frame with a varnish leveling paper path is proposed to address the above problems. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The flexographic printing press frame of the present utility model with a varnish leveling paper path includes a flexographic printing press body, a drying device inside the flexographic printing press body, a printing device inside the flexographic printing press body, and multiple transfer rollers inside the flexographic printing press body. Printing paper is placed between the transfer rollers. By setting multiple transfer rollers, the device can take into account the surface varnish printing process that requires long paper path leveling when printing the printing paper normally, thereby improving the compatibility of the printing press with various process requirements and expanding the process selection range of the printing press.
[0008] Preferably, a cylinder is fixedly connected to the inner wall of the flexographic printing machine body; a connecting frame is fixedly connected to the output end of the cylinder; a pressure roller is rotatably connected to the inner wall of the connecting frame; through the cooperation of the cylinder and the pressure roller, when the device needs to press the printing paper, the cylinder can be activated to make the pressure roller squeeze the printing paper, thereby increasing the tension of the surface of the printing paper during transmission and reducing the looseness that occurs during the transmission of the printing paper.
[0009] Preferably, a connecting pipe is fixedly connected to the middle of the connecting frame; the connecting pipe and the pressure roller are rotatably connected and in communication; multiple air holes are opened in the middle of the pressure roller; when the pressure roller presses the printing paper, an air pump can be connected to the connecting pipe to allow airflow to enter the interior of the pressure roller through the connecting pipe, and the airflow will be ejected from the air holes to clean the surface of the printing paper, reducing the dust and impurities attached to the surface of the printing paper, making the surface of the printing paper cleaner when printing in the printing device, which facilitates the subsequent printing work on the printing paper.
[0010] Preferably, the connecting frame has multiple sliding rods that are slidably connected through the middle; a baffle is fixedly connected to the end of each sliding rod; multiple ball bearings are rotatably connected to the bottom of the baffle; a spring is fixedly connected to the other end of each sliding rod; the spring and the connecting frame are fixedly connected; when the pressure roller presses the printing paper, airflow will be ejected from the air holes to clean the surface of the printing paper, and the baffle will be pressed tightly against the surface of the pressure roller under the elastic force of the spring. The baffle will block the air holes on the side of the pressure roller away from the printing paper. Because the total air pressure inside the pressure roller remains unchanged, the airflow at the air holes facing the printing paper will be accelerated, enhancing the cleaning effect of the airflow on the surface of the printing paper. At the same time, the ball bearings will also contact the pressure roller and be in a rotating state. The ball bearings will reduce the friction between the baffle and the pressure roller, reducing the wear caused by the contact between the baffle and the pressure roller.
[0011] Preferably, a sealing strip is symmetrically fixed to the middle of the baffle; the sealing strip is located at the top of the pressure roller; when the baffle blocks the air holes on the surface of the pressure roller, the sealing strip will also come into contact with the pressure roller and seal the gap between the baffle and the pressure roller, thereby improving the sealing effect of the baffle on the pressure roller. At the same time, because the surface material of the sealing strip is smooth, the friction and wear between it and the pressure roller can be ignored.
[0012] Preferably, a vertical pole is fixedly connected to the bottom of the connecting frame; a dust collection hopper is fixedly connected to the bottom of the vertical pole; by setting up the dust collection hopper, when the pressure roller blows air to clean the surface of the printed paper, some of the scattered dust and impurities will be collected by the dust collection hopper, reducing the pollution of the working environment by these dust and impurities.
[0013] The advantages of this utility model are:
[0014] 1. The flexographic printing frame with a varnish leveling paper path described in this utility model, by setting multiple transfer rollers, enables the device to perform normal printing on printing paper while also accommodating surface varnish printing processes that require long paper path leveling, thereby improving the compatibility of the printing press with various process requirements and expanding the range of process options for the printing press.
[0015] 2. The flexographic printing frame with a varnish leveling paper path described in this utility model, through the combined action of a cylinder and a pressure roller, allows the cylinder to be activated when the printing paper needs to be pressed, so that the pressure roller can squeeze the printing paper, thereby increasing the surface tension of the printing paper during transmission and reducing the looseness that occurs during the transmission of the printing paper. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the main body of this utility model;
[0018] Figure 2 This is a schematic diagram of the connecting frame in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the pressure roller in this utility model;
[0020] Figure 4 This is a schematic diagram of the connecting pipe in this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the baffle in this utility model.
[0022] In the diagram: 1. Flexographic printing machine body; 12. Drying device; 13. Printing device; 14. Transfer roller; 15. Printing paper; 2. Cylinder; 22. Connecting frame; 23. Pressure roller; 3. Connecting pipe; 32. Air hole; 4. Slide rod; 42. Baffle; 43. Ball bearing; 44. Spring; 5. Sealing strip; 6. Upright pole; 62. Dust collection hopper. Detailed Implementation
[0023] 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.
[0024] Specific implementation examples are given below.
[0025] Please see Figures 1 to 5As shown in the embodiment of this utility model, a flexographic printing press frame with a varnish leveling paper path includes a flexographic printing press body 1. A drying device 12 is provided inside the flexographic printing press body 1. A printing device 13 is provided inside the flexographic printing press body 1. Multiple transfer rollers 14 are provided inside the flexographic printing press body 1. Printing paper 15 is placed between the transfer rollers 14. During operation, the printing paper 15 is conveyed and moved along the transfer rollers 14. The printing paper 15 first passes through the printing device 13 and is printed with varnish. After printing, the printing paper 15 continues to be conveyed along the remaining transfer rollers 14. The varnish on the surface of the sheet 15 will be fully leveled during its travel. The varnish-leveled printed paper 15 will then reach the drying device 12 and be dried there. Finally, the dried printed paper 15 will be transferred from the flexographic printing press body 1 to the next processing equipment via the transfer rollers 14. The drying device 12 and the printing device 13 are both common existing technologies. By setting multiple transfer rollers 14, the device can take into account the surface varnish printing process that requires long paper path leveling when printing the printed paper 15 normally, thereby improving the compatibility of the printing press with various process requirements and expanding the range of process selection for the printing press.
[0026] Please see Figures 1 to 4 As shown, a cylinder 2 is fixedly connected to the inner wall of the flexographic printing machine body 1; a connecting frame 22 is fixedly connected to the output end of the cylinder 2; a pressure roller 23 is rotatably connected to the inner wall of the connecting frame 22; before the printing paper 15 is printed by the printing device 13, the connecting frame 22 can be activated by starting the cylinder 2 to drive the pressure roller 23 to move, and the pressure roller 23 will come into contact with the printing paper 15 and squeeze it, so that the printing paper 15 will be subjected to additional squeezing during the movement, thereby increasing the surface tension and tightness of the printing paper 15 during printing; through the cooperation of the cylinder 2 and the pressure roller 23, when the device needs to press the printing paper 15, the cylinder 2 can be activated to make the pressure roller 23 squeeze the printing paper 15, thereby increasing the surface tightness of the printing paper 15 during transmission and reducing the looseness of the printing paper 15 during transmission.
[0027] Please see Figures 3 to 5 As shown, a connecting pipe 3 is fixedly connected to the middle of the connecting frame 22; the connecting pipe 3 and the pressure roller 23 are rotatably connected and in communication; multiple air holes 32 are opened in the middle of the pressure roller 23; when the pressure roller 23 presses the printing paper 15, an air pump can be connected to the connecting pipe 3 to allow airflow to enter the interior of the pressure roller 23 through the connecting pipe 3, and the airflow will be sprayed out from the air holes 32 to clean the surface of the printing paper 15, reducing the dust and impurities attached to the surface of the printing paper 15, so that the surface of the printing paper 15 will be cleaner when it is printed by the printing device 13, which is convenient for subsequent printing work on the printing paper 15.
[0028] Please see Figure 5As shown, a plurality of slide rods 4 are slidably connected through the middle of the connecting frame 22; a baffle 42 is fixedly connected to the end of each slide rod 4; a plurality of ball bearings 43 are rotatably connected to the bottom of the baffle 42; a spring 44 is fixedly connected to the other end of each slide rod 4; the spring 44 and the connecting frame 22 are fixedly connected; when the pressure roller 23 presses the printing paper 15, airflow will be ejected from the air hole 32 to clean the surface of the printing paper 15, and the baffle 42 will be tightly pressed against the pressure roller under the elastic force of the spring 44. On the surface of roller 23, baffle 42 will block the air holes 32 on the side of roller 23 away from the printing paper 15. Because the total air pressure inside roller 23 remains unchanged, the air flow at the air holes 32 facing the printing paper 15 will be accelerated, enhancing the cleaning effect of the airflow on the surface of the printing paper 15. At the same time, the ball bearing 43 will also come into contact with roller 23 and be in a rotating state. The ball bearing 43 will reduce the friction between baffle 42 and roller 23, reducing the wear caused by the contact between baffle 42 and roller 23.
[0029] Please see Figure 5 As shown, a sealing strip 5 is symmetrically fixed to the middle of the baffle 42; the sealing strip 5 is located on the top of the pressure roller 23; when the baffle 42 blocks the air hole 32 on the surface of the pressure roller 23, the sealing strip 5 will also come into contact with the pressure roller 23 and seal the gap between the baffle 42 and the pressure roller 23, thereby improving the sealing effect of the baffle 42 on the pressure roller 23. At the same time, because the surface material of the sealing strip 5 is smooth, the friction and wear between it and the pressure roller 23 can be ignored.
[0030] Please see Figure 3 and Figure 4 As shown, a vertical pole 6 is fixedly connected to the bottom of the connecting frame 22; a dust collection hopper 62 is fixedly connected to the bottom of the vertical pole 6; by setting up the dust collection hopper 62, when the pressure roller 23 blows air to clean the surface of the printing paper 15, some of the scattered dust and impurities will be collected by the dust collection hopper 62, reducing the pollution of the working environment by these dust and impurities.
[0031] Working principle: The printing paper 15 is conveyed along the transfer rollers 14. The printing paper 15 first passes through the printing unit 13 and is printed with varnish. After printing, the printing paper 15 continues to be conveyed along the remaining transfer rollers 14. The varnish on the surface of the printing paper 15 is fully leveled during the movement. Then, the varnish-leveled printing paper 15 reaches the drying unit 12 and is dried there. Finally, the dried printing paper 15 is conveyed from the flexographic printing press body 1 to the next processing equipment via the transfer rollers 14. Both the drying unit 12 and the printing unit 13 are common existing technologies. The printing paper 15 is printed in the printing unit 13... Before printing, the cylinder 2 can be activated to move the connecting frame 22 and the pressure roller 23. The pressure roller 23 will contact and squeeze the printing paper 15, subjecting the paper 15 to additional pressure during its movement, thus increasing the surface tension and tightness of the paper 15 during printing. While the pressure roller 23 is pressing the printing paper 15, an external air pump can be connected to the connecting pipe 3 to allow airflow to enter the interior of the pressure roller 23. The airflow will be ejected from the air hole 32 and clean the surface of the printing paper 15, reducing dust and impurities adhering to the surface of the paper 15, thus improving the surface tension of the paper 15 during printing in the printing device 13. It will be cleaner; the other end of each slide bar 4 is fixedly connected to a spring 44; the spring 44 and the connecting frame 22 are fixedly connected; when the pressure roller 23 presses the printing paper 15, the airflow will be ejected from the air hole 32 to clean the surface of the printing paper 15, and the baffle 42 will be pressed tightly against the surface of the pressure roller 23 under the elastic force of the spring 44. The baffle 42 will block the air hole 32 on the side of the pressure roller 23 away from the printing paper 15. Because the total air pressure inside the pressure roller 23 remains unchanged, the airflow at the air hole 32 facing the printing paper 15 will be accelerated, enhancing the cleaning effect of the airflow on the surface of the printing paper 15. At the same time, the ball bearing 43 will also interact with the pressure roller 23. When contact occurs and the roller 43 is in a rotating state, the ball bearing 43 will reduce the friction between the baffle 42 and the pressure roller 23. When the baffle 42 blocks the air holes 32 on the surface of the pressure roller 23, the sealing strip 5 will also contact the pressure roller 23 and seal the gap between the baffle 42 and the pressure roller 23, thereby improving the sealing effect of the baffle 42 on the pressure roller 23. At the same time, because the surface material of the sealing strip 5 is smooth, the friction and wear between it and the pressure roller 23 can be ignored. By setting up the dust collection hopper 62, when the pressure roller 23 blows air to clean the surface of the printing paper 15, some of the scattered dust and impurities will be collected by the dust collection hopper 62, reducing the pollution of the working environment by these dust and impurities.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A flexographic printing press frame for varnish leveling paper path, comprising a flexographic printing press body (1), characterized in that: The flexographic printing machine body (1) is equipped with a drying device (12) inside; the flexographic printing machine body (1) is equipped with a printing device (13) inside; the flexographic printing machine body (1) is equipped with multiple transfer rollers (14) inside; and printing paper (15) is arranged between the transfer rollers (14).
2. The flexographic printing frame with a varnish leveling paper path according to claim 1, characterized in that: A cylinder (2) is fixedly connected to the inner wall of the flexographic printing machine body (1); a connecting frame (22) is fixedly connected to the output end of the cylinder (2); and a pressure roller (23) is rotatably connected to the inner wall of the connecting frame (22).
3. The flexographic printing frame with a varnish leveling paper path according to claim 2, characterized in that: A connecting pipe (3) is fixedly connected to the middle of the connecting frame (22); the connecting pipe (3) and the pressure roller (23) are rotatably connected and in communication; a plurality of air holes (32) are opened in the middle of the pressure roller (23).
4. The flexographic printing frame with a varnish leveling paper path according to claim 3, characterized in that: The connecting frame (22) has multiple sliding rods (4) that are slidably connected through the middle; a baffle (42) is fixedly connected to the end of each sliding rod (4); multiple ball bearings (43) are rotatably connected to the bottom of the baffle (42); a spring (44) is fixedly connected to the other end of each sliding rod (4); the spring (44) and the connecting frame (22) are fixedly connected.
5. The flexographic printing frame with a varnish leveling paper path according to claim 4, characterized in that: A sealing strip (5) is symmetrically fixed to the middle of the baffle (42); the sealing strip (5) is located at the top of the pressure roller (23).
6. The flexographic printing press frame with a varnish leveling paper path according to claim 5, characterized in that: The bottom of the connecting frame (22) is fixedly connected to a vertical pole (6); the bottom of the vertical pole (6) is fixedly connected to a dust collection hopper (62).