A web-fed inkjet printer flattening apparatus

Abstract

The utility model relates to rotary inkjet printing machine technical field discloses a kind of rotary inkjet printing machine flattening equipment, including rotary inkjet printing machine ontology, the top of supporting plate is provided with U-shaped frame, the both sides of U-shaped frame bottom are symmetrically provided with upper press roll and lower press roll, the upper press roll is set in the upper of lower press roll, the inside fixed connection of upper press roll has first rotating shaft, the utility model is provided with upper press roll and lower press roll in U-shaped frame inboard, upper press roll and lower press roll can adjust the distance between them according to actual use needs, can effectively flatten the wrinkle on paper surface, effectively improve the follow-up use effect, and one side of U-shaped frame is provided with dust removal plate, the bottom of dust removal plate is provided with dust removal brush, can effectively clean the dust on paper surface, by setting guide roller, paper slides from the top of guide roller, to effectively flatten paper, guarantee its tightness degree, facilitate subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of rotary inkjet printing machine technology, and in particular to a rotary inkjet printing machine flattening device. Background Technology

[0002] Rotary inkjet printers are high-efficiency continuous digital printing equipment. Relying on computer control, they eject ink droplets onto a continuously moving substrate through printheads to create images. They do not require traditional printing plates and are suitable for batch printing and variable data printing. They are widely used in packaging, publishing and other fields, and are characterized by high speed, high flexibility and convenient order changeover. Their flattening device is a key auxiliary device to ensure printing accuracy. It can eliminate wrinkles and curls on the substrate through mechanical force or airflow adsorption, ensuring that the substrate is flat and fits the printing surface. This avoids problems such as uneven ink color and misregistration caused by uneven materials, and is suitable for substrates of different materials and sizes.

[0003] In the actual operation of rotary inkjet printers, the performance of the flattening equipment directly affects the stability of print quality. However, existing flattening equipment has obvious technical limitations. First, the spacing between flattening rollers is mostly fixed or can only be roughly adjusted, making it impossible to achieve precise adaptation according to paper thickness. When processing paper of different weights, too loose a roller can cause paper to float and misalign, while too tight a roller can cause paper to stretch and deform. Second, there is a lack of effective paper surface cleaning mechanisms. Dust, fibers, and other impurities attached to the paper during storage and transportation are not removed. This not only exacerbates friction and creates new wrinkles during the flattening process but may also clog inkjet nozzles or create defects on the printed surface, significantly reducing the flattening effect and the pass rate of the final printed product, making it difficult to meet the needs of high-precision printing scenarios.

[0004] Therefore, it is necessary to invent a flattening device for a rotary inkjet printer to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a flattening device for a rotary inkjet printer, to solve the problem mentioned in the background art that, in the actual operation of a rotary inkjet printer, the performance of the flattening device directly affects the stability of printing quality. However, existing flattening devices have obvious technical limitations. First, the spacing between the flattening rollers is mostly fixed or can only be roughly adjusted, and cannot be precisely adapted according to the paper thickness. When processing papers of different weights, too loose a spacing can easily cause the paper to float and misalign, while too tight a spacing can cause the paper to stretch and deform. Second, there is a lack of an effective paper surface cleaning mechanism. Dust, fibers and other impurities attached to the paper during storage and transportation are not removed. This not only aggravates friction and creates new wrinkles during the flattening process, but may also clog the inkjet nozzles or form defects on the printed surface, significantly reducing the flattening effect and the pass rate of the final printed product, making it difficult to meet the needs of high-precision printing scenarios.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary inkjet printer flattening device, comprising a rotary inkjet printer body, two support plates symmetrically fixedly connected to one side of the rotary inkjet printer body, a U-shaped frame provided at the top of the support plates, an upper pressure roller and a lower pressure roller symmetrically arranged on both sides of the bottom end of the U-shaped frame, the upper pressure roller being positioned above the lower pressure roller, a first rotating shaft fixedly connected inside the upper pressure roller, and a second rotating shaft fixedly connected inside the lower pressure roller;

[0007] Both ends of the upper and lower pressure rollers are provided with movable frames, and a slider is slidably connected to the inner side of the movable frame. The second rotating shaft is rotatably disposed on the inner side of the movable frame, and the first rotating shaft is rotatably disposed on the inner side of the slider.

[0008] A dust removal plate is fixedly connected to the front end of the U-shaped frame, and a dust removal brush is provided at the bottom end of the dust removal plate.

[0009] As a preferred embodiment, the side of the U-shaped frame is provided with a sliding groove, the movable frame is slidably connected to the inner side of the sliding groove, the bottom end of the movable frame is provided with a drive motor, the output end of the drive motor is driven by a lead screw, and the lead screw is threadedly connected to the bottom end of the movable frame.

[0010] As a preferred embodiment, a guide rod is slidably connected to the top of the movable frame, and a spring is provided on the outside of the guide rod. The guide rod is fixedly connected to the top of the slider and the bottom of the inner side of the groove.

[0011] As a preferred embodiment, limit blocks are fixedly connected to both sides of the movable frame, and grooves corresponding to the limit blocks are provided on both sides of the inside of the slide groove, with the limit blocks being slidably connected to the inside of the groove.

[0012] As a preferred embodiment, an electric telescopic rod is fixedly connected to the top of the U-shaped frame, a support frame is fixedly connected to the output end of the electric telescopic rod, and a guide roller is rotatably provided at the bottom end of the support frame.

[0013] As a preferred embodiment, each of the four corners of the U-shaped frame is fixedly connected with a mounting lug, and the U-shaped frame is fixedly connected to the top of the support plate through the mounting lugs.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This utility model features an upper pressure roller and a lower pressure roller inside a U-shaped frame. The distance between the upper and lower pressure rollers can be adjusted according to actual usage needs, effectively flattening wrinkles on the paper surface and improving subsequent use. At the same time, a dust removal plate is provided on one side of the U-shaped frame, and a dust removal brush is provided at the bottom of the dust removal plate, which can effectively clean dust from the paper surface. By setting guide rollers, the paper slides over the top of the guide rollers, thereby effectively flattening the paper and ensuring its tension for easy subsequent use.

[0016] This invention features a slider that slides inside a movable frame. As the movable frame moves up and down, the slider moves up and down within the frame, facilitating adjustment of the distance between the first and second rotating shafts. This, in turn, effectively changes the distance between the upper and lower pressure rollers. The bottom drive motor allows for fine-tuning of the distance between the movable frame and the slider, significantly improving the accuracy of the distance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the U-shaped frame in this utility model;

[0019] Figure 3 This is a schematic diagram of the movable frame in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the electric telescopic rod in this utility model.

[0021] In the picture:

[0022] 1. Rotary inkjet printer body; 11. Support plate;

[0023] 2. U-shaped frame; 21. Upper pressure roller; 211. First rotating shaft; 22. Lower pressure roller; 221. Second rotating shaft; 23. Dust removal plate; 231. Dust removal brush; 24. Mounting side lug; 25. Electric telescopic rod; 251. Support frame; 252. Guide roller; 26. Slide groove;

[0024] 3. Moving frame; 31. Slider; 32. Limiting block; 33. Guide rod; 34. Drive motor; 341. Lead screw; 35. Spring. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see the appendix Figure 1 - Appendix Figure 4 A rotary inkjet printer flattening device includes a rotary inkjet printer body 1. Two support plates 11 are symmetrically fixedly connected to one side of the rotary inkjet printer body 1. A U-shaped frame 2 is provided at the top of the support plate 11. An upper pressure roller 21 and a lower pressure roller 22 are symmetrically arranged on both sides of the bottom end of the U-shaped frame 2. The upper pressure roller 21 is located above the lower pressure roller 22. A first rotating shaft 211 is fixedly connected inside the upper pressure roller 21, and a second rotating shaft 221 is fixedly connected inside the lower pressure roller 22. The working principle of the rotary inkjet printer body 1 is to use a roll-type printing material... Driven by the rotary mechanism, the material is continuously conveyed forward. At the same time, the inkjet head in the printing system accurately sprays ink in the form of tiny droplets onto the surface of the substrate based on the digital graphic information through piezoelectric and thermal bubble technologies to form the required text, images or patterns. Throughout the process, the continuous feeding of the substrate and the precise spraying of the inkjet head work together, and the drying system quickly solidifies or dries the ink that has just been printed, thereby achieving high-speed, continuous and high-quality printing production. The rotary inkjet printer body 1 is an existing mature technology, which will not be described in detail here.

[0027] Both ends of the upper pressure roller 21 and the lower pressure roller 22 are provided with a movable frame 3. A slider 31 is slidably connected to the inner side of the movable frame 3. The second rotating shaft 221 is rotatably disposed on the inner side of the movable frame 3, and the first rotating shaft 211 is rotatably disposed on the inner side of the slider 31.

[0028] The front end of the U-shaped frame 2 is fixedly connected to a dust removal plate 23, and a dust removal brush 231 is provided at the bottom of the dust removal plate 23.

[0029] Specifically, by setting an upper pressure roller 21 and a lower pressure roller 22 on the inner side of the U-shaped frame 2, the distance between the upper pressure roller 21 and the lower pressure roller 22 can be adjusted according to actual use needs, which can effectively flatten the wrinkles on the paper surface and effectively improve the subsequent use effect. At the same time, a dust removal plate 23 is set on one side of the U-shaped frame 2, and a dust removal brush 231 is set at the bottom of the dust removal plate 23, which can effectively clean the dust on the paper surface. By setting a guide roller 252, the paper slides over the top of the guide roller 252, thereby effectively flattening the paper and ensuring its tension, which is convenient for subsequent use.

[0030] Please see the appendix Figure 2 and Figure 3 The side of the U-shaped frame 2 is provided with a sliding groove 26, the movable frame 3 is slidably connected to the inner side of the sliding groove 26, the bottom end of the movable frame 3 is provided with a drive motor 34, the output end of the drive motor 34 is connected to a lead screw 341, and the lead screw 341 is threadedly connected to the bottom end of the movable frame 3.

[0031] Specifically, a drive motor 34 is installed at the bottom of the movable frame 3, and a lead screw 341 is connected to the output end of the drive motor 34. The lead screw 341 is threaded to the bottom of the movable frame 3, thereby starting the drive motor 34 to drive the lead screw 341 to rotate. The rotation of the lead screw 341 and the rotation of the movable frame 3 together can effectively drive the movable frame 3 to move up and down inside the slide groove 26.

[0032] Please see the appendix Figure 3 The top of the movable frame 3 is slidably connected to a guide rod 33, and a spring 35 is provided on the outside of the guide rod 33. The guide rod 33 is fixedly connected to the top of the slider 31 and the bottom of the inner side of the slide groove 26.

[0033] Specifically, by setting a guide rod 33, the top end of the guide rod 33 is fixedly connected to the top end of the inner side of the slide groove 26, and the bottom end of the guide rod 33 is fixedly connected to the top end of the slider 31. Thus, when the moving frame 3 moves up and down, since the guide rod 33 and the slider 31 are fixed to each other and the guide rod 33 is fixedly connected to the top end of the inner side of the slide groove 26, the moving frame 3 and the slider 31 will move relative to each other, so that the first rotating shaft 211 and the second rotating shaft 221 can move closer or further away from each other, thereby effectively fine-tuning the distance between the upper pressure roller 21 and the lower pressure roller 22.

[0034] Please see the appendix Figure 2 and Figure 3 Both sides of the movable frame 3 are fixedly connected to limit blocks 32, and both sides of the slide groove 26 are provided with grooves corresponding to the limit blocks 32. The limit blocks 32 are slidably connected to the inside of the groove.

[0035] Specifically, by fixing limit blocks 32 to both sides of the movable frame 3, and providing grooves corresponding to the limit blocks 32 on both sides of the inside of the slide groove 26, the limit blocks 32 are slidably connected to the inside of the grooves, thereby enabling the movable frame 3 to move up and down stably inside the slide groove 26.

[0036] Please see the appendix Figure 2 and Figure 4 An electric telescopic rod 25 is fixedly connected to the top of the U-shaped frame 2. A support frame 251 is fixedly connected to the output end of the electric telescopic rod 25. A guide roller 252 is rotatably installed at the bottom end of the support frame 251.

[0037] Specifically, by setting an electric telescopic rod 25, the support frame 251 is fixedly connected to the output end of the electric telescopic rod 25, so that the electric telescopic rod 25 can effectively drive the support frame 251 to move up and down. The guide roller 252 is rotatably set at the bottom end of the support frame 251. In actual use, the paper passes through the top of the guide roller 252. When it is necessary to tighten the paper, the guide roller 252 can be driven to move up and down, thereby tightening the paper by pulling it, which makes it easier to flatten the paper.

[0038] Please see the appendix Figure 1 and Figure 2 The four corners of the U-shaped frame 2 are fixedly connected with mounting ears 24, and the U-shaped frame 2 is fixedly connected to the top of the support plate 11 through the mounting ears 24.

[0039] Specifically, mounting ears 24 are fixedly connected to the four corners of the U-shaped frame 2. The inner side of the mounting ears 24 is provided with threaded holes, which makes it easy to fix the mounting ears 24 to the top of the support plate 11 with bolts, thereby making it easy to fix the U-shaped frame 2 to the top of the support plate 11.

[0040] The working principle of this utility model is as follows: In specific use, the paper that needs to be flattened enters from below the dust removal brush 231, passes between the upper pressure roller 21 and the lower pressure roller 22, then passes through the top of the guide roller 252, and then passes between the upper pressure roller 21 and the lower pressure roller 22 on the other side, and finally enters the inner side of the rotary inkjet printer body 1 for printing.

[0041] When it is necessary to adjust the distance between the upper pressure roller 21 and the lower pressure roller 22, the drive motor 34 is started to drive the lead screw 341 to rotate. The rotation of the lead screw 341 and the rotation of the moving frame 3 by the thread can effectively drive the moving frame 3 to move up and down inside the slide groove 26. Since the guide rod 33 and the slider 31 are fixed to each other, and the guide rod 33 is fixedly connected to the top of the inner side of the slide groove 26, the moving frame 3 and the slider 31 will move relative to each other, so that the first rotating shaft 211 and the second rotating shaft 221 can move closer or further away from each other, thereby effectively fine-tuning the distance between the upper pressure roller 21 and the lower pressure roller 22.

[0042] A dust removal plate 23 is provided on one side of the U-shaped frame 2, and a dust removal brush 231 is provided at the bottom of the dust removal plate 23, which can effectively clean the dust on the surface of the paper. By setting the guide roller 252, the paper slides over the top of the guide roller 252, thereby effectively flattening the paper and ensuring its tension for easy subsequent use.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flattening device for a rotary inkjet printer, comprising a rotary inkjet printer body (1), wherein two support plates (11) are symmetrically fixedly connected to one side of the rotary inkjet printer body (1), characterized in that: The top of the support plate (11) is provided with a U-shaped frame (2), and the bottom sides of the U-shaped frame (2) are symmetrically provided with an upper pressure roller (21) and a lower pressure roller (22). The upper pressure roller (21) is located above the lower pressure roller (22). The upper pressure roller (21) is fixedly connected to a first rotating shaft (211), and the lower pressure roller (22) is fixedly connected to a second rotating shaft (221). Both ends of the upper pressure roller (21) and the lower pressure roller (22) are provided with a movable frame (3). A slider (31) is slidably connected to the inner side of the movable frame (3). The second rotating shaft (221) is rotatably disposed on the inner side of the movable frame (3), and the first rotating shaft (211) is rotatably disposed on the inner side of the slider (31). The front end of the U-shaped frame (2) is fixedly connected to a dust removal plate (23), and a dust removal brush (231) is provided at the bottom end of the dust removal plate (23).

2. The rotary inkjet printing press flattening device according to claim 1, characterized in that: The side of the U-shaped frame (2) is provided with a sliding groove (26), the movable frame (3) is slidably connected to the inner side of the sliding groove (26), the bottom end of the movable frame (3) is provided with a drive motor (34), the output end of the drive motor (34) is connected to a lead screw (341), and the lead screw (341) is threadedly connected to the bottom end of the movable frame (3).

3. The rotary inkjet printing press flattening device according to claim 2, characterized in that: The top of the movable frame (3) is slidably connected to a guide rod (33), and a spring (35) is provided on the outside of the guide rod (33). The guide rod (33) is fixedly connected to the top of the slider (31) and the bottom of the inner side of the groove (26).

4. The rotary inkjet printing press flattening device according to claim 3, characterized in that: Both sides of the movable frame (3) are fixedly connected to limit blocks (32), and both sides of the slide groove (26) are provided with grooves corresponding to the limit blocks (32). The limit blocks (32) are slidably connected to the inside of the grooves.

5. The rotary inkjet printing press flattening device according to claim 4, characterized in that: The top of the U-shaped frame (2) is fixedly connected to an electric telescopic rod (25), the output end of the electric telescopic rod (25) is fixedly connected to a support frame (251), and the bottom end of the support frame (251) is rotatably provided with a guide roller (252).

6. The flattening device for a rotary inkjet printer according to claim 5, characterized in that: The four corners of the U-shaped frame (2) are fixedly connected with mounting ears (24), and the U-shaped frame (2) is fixedly connected to the top of the support plate (11) through the mounting ears (24).

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