Double-sided printing machine for plastic film

Abstract

The utility model relates to the technical field of film printing, in particular to a double-sided printing machine for plastic films, which can guide the flow of printing paint accumulated at a scraper, reduce the amount of the paint accumulated at the scraper, prevent fuzzy printing and improve the product quality, and comprises a plurality of mutually matched printing cylinders and a mounting component, a scraper is installed on the installation assembly and used for evenly scraping printing paint on the surface of a printing roller, a backflow assembly is installed below the scraper, a gap is reserved between the backflow assembly and the scraper and used for guiding redundant printing paint, and an adjusting device used for adjusting the position of the backflow assembly is arranged on the installation assembly. The backflow assembly comprises a flow guide part and a lower sliding part obliquely arranged on the lower portion of the flow guide part, the adjusting device comprises a first connecting block connected with the installation assembly, a second connecting block connected with the backflow assembly and a lead screw, and the lead screw is in threaded connection with the first connecting block and is rotationally connected with the second connecting block.

Description

Technical Field

[0001] The utility model relates to the technical field of film printing, in particular to a double-sided printing machine for plastic films. Background Art

[0002] As is well known, plastic films are made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, and are used for packaging and as a coating layer; plastic packaging and plastic packaging products account for an increasing share in the market. Especially composite plastic flexible packaging has been widely used in the fields of food, medicine, chemical industry, etc. Plastic films need to be printed with patterns on their surfaces through printing so as to be used in various different fields. At present, in printing, the printing substrate often needs to be printed on both sides to meet the requirements of the printing process or products.

[0003] Printing is a technology that transfers the original manuscripts such as characters, pictures, photos, anti-counterfeiting, etc. to the surfaces of materials such as paper, textiles, plastics, leather, PVC, PC, etc. through processes such as plate making, inking, and pressing, and batch-replicates the content of the original manuscripts. Printing is the process of transferring the approved printing plate to the printing substrate through a printing machine and special ink.

[0004] When the printing machine is actually working, as Figure 1 shown, the printing coating in the storage tank adheres to the surface of the printing drum. The printing drum rotates to print the printing coating on the plastic film. In order to ensure that the printing coating is printed more evenly, a scraper is installed on the side of the printing drum in the prior art, and the scraper is used to scrape the printing coating on the surface of the printing drum evenly. However, the printing coating gradually accumulates on the side blocked by the scraper. After a long time, too much printing coating will accumulate at the scraper, which is likely to cause printing blurring and affect the product quality. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a double-sided printing machine for plastic films, which can divert the printing coating accumulated at the scraper, reduce the amount of coating accumulated at the scraper, prevent printing blurring, and improve the product quality.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A double-sided printing machine for plastic films includes several mutually cooperating printing drums, and further includes an installation component. A scraper is installed on the installation component, and the scraper is used to scrape the printing coating on the surface of the printing roller evenly. A reflux component is installed below the scraper, and there is a gap between the reflux component and the scraper to divert the excess printing coating. An adjusting device for adjusting the position of the reflux component is provided on the installation component.

[0009] Further, the reflux assembly includes a diversion portion and a sliding portion that is inclined and disposed below the diversion portion.

[0010] Furthermore, the adjusting device includes a first connecting block connected to the mounting assembly, a second connecting block connected to the reflux assembly, and a lead screw. The lead screw is threadedly connected to the first connecting block, and the lead screw is rotatably connected to the second connecting block.

[0011] Still further, a rotating assembly for rotating the lead screw is provided on the lead screw.

[0012] Preferably, a plurality of diversion grooves are provided on the diversion portion.

[0013] In addition, a scale is provided on the mounting assembly.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present utility model provides a double-sided printing machine for plastic films, having the following beneficial effects:

[0016] In the double-sided printing machine for plastic films, through the arrangement of the reflux assembly, and with a gap left between the reflux assembly and the squeegee, the printing coating can flow between the gaps to divert the excess printing coating, reducing the amount of printing coating accumulated at the squeegee, preventing the printing from becoming blurred, improving the quality of the product. Through the arrangement of the adjusting device, it is used to accurately adjust the position of the reflux assembly so that the reflux effect of the printing coating reaches the best. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the prior art of the present utility model;

[0018] Figure 2 is a three-dimensional structural diagram of the present utility model;

[0019] Figure 3 is a side view structural diagram of the present utility model;

[0020] Figure 4 is a three-dimensional structural diagram of the squeegee of the present utility model;

[0021] Figure 5 is a three-dimensional structural diagram of the reflux assembly of the present utility model;

[0022] Figure 6 is of the present utility model Figure 3 is a partially enlarged structural diagram of the portion A shown in the present utility model;

[0023] Figure 7 is of the present utility model Figure 5Schematic diagram of the enlarged partial structure at position B shown in the figure.

[0024] In the figure: 1, printing roller; 2, storage tank; 3, plastic film; 4, mounting assembly; 5, scraper; 6, diversion part; 7, downward-sliding part; 8, lead screw; 9, first connecting block; 10, second connecting block; 11, rotating assembly; 12, printing coating; 13, diversion groove. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-7 , a double-sided printing machine for plastic films of the present invention, where a storage tank stores the printing coating 12 for printing. The printing coating 12 in the storage tank 2 adheres to the surface of the printing roller 1. The printing roller 1 rotates to print the printing coating 12 on the plastic film 3. An installation assembly 4 is provided on the printing machine, and a scraper 5 is installed on the installation assembly 4. The scraper 5 is used to scrape the printing coating 12 on the surface of the printing roller evenly. A reflux assembly is installed below the scraper 5, and there is a gap between the reflux assembly and the scraper 5 to divert the excess printing coating 12, reduce the amount of printing coating 12 accumulated at the scraper 5, prevent the printing from becoming blurred, improve the quality of the product, and an adjustment device for adjusting the position of the reflux assembly is provided on the installation assembly 4 to accurately adjust the position of the reflux assembly so that the reflux effect of the printing coating 12 reaches the best.

[0027] The reflux assembly includes a diversion part 6 and a downward-sliding part 7 inclined at the lower part of the diversion part 6. The printing coating 12 at the scraper 5 refluxes at the diversion part, and then the printing coating 12 falls back into the storage tank 2 through the downward-sliding part 7. A plurality of diversion grooves 13 are provided on the diversion part 6 to improve the reflux effect.

[0028] The adjustment device includes a first connecting block 9 connected to the installation assembly 4, a second connecting block 10 connected to the reflux assembly, and a lead screw 8. The lead screw 8 is threadedly connected to the first connecting block 9, and the lead screw 8 is rotatably connected to the second connecting block 10. A rotating assembly 11 for rotating the lead screw 8 is provided on the lead screw 8. Rotating the lead screw 8 can accurately adjust the position of the reflux assembly so that the reflux effect of the printing coating 12 reaches the best.

[0029] Among them, the staff can accurately adjust the reflux assembly, and scales are provided on the installation assembly 4.

[0030] In summary, for the double-sided printing machine for a plastic film, during use, according to the actual usage situation, the position of the reflux assembly is adjusted through the adjusting device to optimize the reflux effect of the printing coating 12. The printing coating 12 can flow between the gaps to divert the excess printing coating 12, reduce the amount of the printing coating 12 accumulated at the squeegee 5, prevent the printing from becoming blurred, and then the printing coating 12 falls back into the storage tank 2 through the downward-sliding part 7.

[0031] The technical terms or scientific terms used in the description of this application should have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The words indicating directions such as "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", etc. used in the description of this application are only used to indicate relative directions or positional relationships, rather than implying that the device or component must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the object being described changes, its relative positional relationship may also change accordingly. Therefore, it should not be understood as a limitation to this application. The terms "first", "second", "third", and similar terms used in the description of this application are only for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance.

[0032] The similar words such as "a", "an", or "the" used in the description of this application should not be understood as an absolute limitation on the quantity, but should be understood as having at least one. The similar words such as "including" or "comprising" used in the description of this application are intended to mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sided printing machine for plastic film, comprising a plurality of printing rollers (1) cooperating with each other, characterized in that: The invention also comprises a mounting assembly (4), wherein a scraper (5) is mounted on the mounting assembly (4), and the scraper (5) is used to evenly scrape the printing coating (12) on the surface of the printing roller; a reflux assembly is mounted below the scraper (5), and a gap is left between the reflux assembly and the scraper (5) to guide excess printing coating (12); and an adjusting device for adjusting the position of the reflux assembly is arranged on the mounting assembly (4).

2. A double-sided printing machine for plastic film according to claim 1, characterized in that: The reflux assembly comprises a flow guide portion (6) and a sliding portion (7) arranged obliquely below the flow guide portion (6).

3. A double-sided printing machine for plastic film according to claim 2, characterized in that: The adjusting device comprises a first connecting block (9) connected to the mounting assembly (4), a second connecting block (10) connected to the reflux assembly, and a lead screw (8); the lead screw (8) and the first connecting block (9) are connected via threads, and the lead screw (8) and the second connecting block (10) are connected in a rotatable manner.

4. A double-sided printing machine for plastic film according to claim 3, characterized in that: The lead screw (8) is provided with a rotating assembly (11) for rotating the lead screw (8).

5. A double-sided printing machine for plastic film according to claim 2 or 3, characterized in that: The guide portion (6) is provided with a plurality of guide grooves (13).

6. A double-sided printing machine for plastic film according to claim 1, characterized in that: The mounting assembly (4) is provided with a scale.

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