A gravure printing cylinder device and a printing machine for improving printing adaptability

Abstract

The application discloses a gravure printing holder device and a printing machine for improving printing adaptability, which comprises a holder body, a limiting rail fixed to the holder body, the limiting rail extending along the axial direction of a printing plate roller, the limiting rail being provided with limiting grooves, and a plurality of limiting holes being arranged on any groove wall of the limiting grooves; a plurality of air pipe fixing clamps being detachably arranged in the limiting grooves, the air pipe fixing clamps being provided with fixing holes corresponding to the limiting holes, the air pipe fixing clamps being fixed on the limiting rail, the air pipe fixing clamps being provided with clamping spaces facing the printing plate roller, and each clamping space corresponding to a non-text area of the printing plate roller; and a blowing assembly comprising air pipes connected with an air source, the air pipes being fixed in the clamping spaces respectively, and the air outlet ends of the air pipes being constrained to be aligned with the non-text area. The application can accelerate the drying of the non-text area printing ink by using external gas, solidify the residual ink layer before transfer, reduce the wet ink from being reversely adhered to the printing film, improve the printing adaptability, and reduce the occurrence probability of plate pollution.

Description

Technical Field

[0001] This application relates to the field of printing equipment technology, and in particular to a gravure printing cutter holder device for improving printing adaptability. Background Technology

[0002] A gravure printing press is a machine that uses an intaglio printing plate. The image areas of the printing plate are recessed, while the non-image areas are on the same plane as the outer circle of the printing cylinder. Current label printing uses a panel design, with gaps between each label, i.e., non-image areas.

[0003] Currently, gravure printing presses mainly use a doctor blade to scrape the ink. In gravure printing, some printing inks (such as high-viscosity inks, gravure water-based inks, and other special effect gravure inks) dry slowly. In non-image areas (i.e., the gaps between labels), they are prone to forming fine residues due to their rheological properties and adhesion. These residues are difficult to completely remove with the doctor blade, resulting in slight plate contamination in the early stages of printing and affecting the cleanliness of the print.

[0004] As the printing stroke increases (e.g., reaching 20,000 meters), ink residue in non-image areas gradually accumulates due to lack of effective drying, failing to solidify in time and ultimately causing severe plate contamination. This phenomenon not only affects the product's appearance but also increases the frequency of equipment cleaning and maintenance, reducing production efficiency.

[0005] Furthermore, severe ink contamination can leave excessive ink residue in non-image areas, preventing the adhesive from directly bonding to the substrate during subsequent sealing processes, thus reducing adhesion strength. This can lead to cracking or detachment of heat-shrinkable labels during the heat-shrinking process on beverage production lines, affecting the quality and reliability of the finished product.

[0006] Therefore, how to make the printing ink in non-image areas dry quickly and avoid accumulation that causes plate contamination is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0007] The purpose of this application is to provide a gravure printing die holder device for improving printing adaptability. It utilizes external gas to accelerate the drying of printing ink in non-image areas, so that the residual ink layer is cured before transfer, reducing the back adhesion of wet ink to the printing film, thereby improving printing adaptability and reducing the probability of plate contamination.

[0008] To achieve the above objectives, this application provides a gravure printing die holder device for improving printing adaptability, comprising:

[0009] Frame;

[0010] A limiting rail is fixedly installed on the frame. The limiting rail extends along the axial direction of the printing plate roller. The limiting rail is provided with a limiting groove, and multiple limiting holes are provided on any wall of the limiting groove.

[0011] A plurality of air tube fixing clips are detachably disposed in the limiting groove. Each air tube fixing clip has a fixing hole corresponding to the limiting hole so that the air tube fixing clip is fixed on the limiting rail. Each air tube fixing clip has a clamping space facing the printing plate roller. The clamping space on each air tube fixing clip corresponds to the non-image area of ​​the printing plate roller.

[0012] An air blowing assembly includes air tubes connected to an air source, the air tubes being fixed in the clamping space, and the air outlets of the air tubes being constrained to be aligned with the non-graphic area.

[0013] In some embodiments, the air blowing assembly includes an air tube distributor, one end of which is connected to the air source and the other end is connected to a plurality of air tubes.

[0014] In some embodiments, the tracheal distributor has a regulating valve that adjusts the air volume of each tracheal tube.

[0015] In some embodiments, the frame includes a tool holder and a support column for stabilizing the tool holder. The limiting rail is provided with fixing plates at both ends, the fixing plates are clamped to both sides of the support column, and the fixing plates are provided with locking holes for locking with the support column.

[0016] In some embodiments, the blade holder is provided with a positioning groove that extends toward the printing plate roller and the end of the positioning groove is aligned with the non-image area.

[0017] The air tube extending out of the clamping space is located in the positioning groove. The air tube is arranged along the extension direction of the positioning groove to be aligned with the non-graphic area. The positioning groove and the air tube are interference-fitted.

[0018] In some embodiments, the number of positioning slots is the same as the number of airway fixing clips, and the clamping space is aligned with each of the positioning slots.

[0019] In some embodiments, the air pipe fixing clamp is provided with a protrusion that extends into the limiting groove, and the protrusion slides in conjunction with the limiting groove to adjust the position of the air pipe fixing clamp in the axial direction of the printing plate roller.

[0020] In some embodiments, the end of the air pipe facing the printing plate roller is provided with a square nozzle, and the width of the square nozzle corresponds to the width of the non-image area along the axial direction of the printing plate roller.

[0021] In some embodiments, the limiting hole is located at the bottom of the limiting groove, and the fixing hole and the limiting hole are vertically arranged threaded holes, which are fixedly connected by screws.

[0022] A printing press includes the gravure printing knife holder device described above for improving printing adaptability.

[0023] Compared to the aforementioned background technology, this application provides a stable and continuous high-speed gas through an air blowing assembly. With the cooperation of the air pipe fixing clamp and limiting rail, the air pipe can be precisely aligned with the non-image area, achieving stable and continuous localized air blowing during high-speed printing. This effectively accelerates the curing of the ink layer in the non-image area, reduces plate contamination, and improves print adaptability and print quality. Simultaneously, it continuously suppresses ink accumulation during printing, maintaining the cleanliness of the non-image area even with print runs exceeding 20,000 meters, effectively extending the lifespan of the printing roller and doctor blade, and reducing downtime for maintenance. Furthermore, the clean non-image area facilitates direct bonding of the adhesive to the substrate, enhancing bonding strength and ultimately improving the overall quality of the heat-shrink sleeve label. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the gravure printing knife holder device for improving printing adaptability provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the limiting rail and airway fixing clamp structure provided in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the trachea fixing clip and trachea mechanism provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the non-graphic area structure provided in an embodiment of this application.

[0029] In the diagram: 1-Knife holder; 2-Limit rail; 3-Air pipe fixing clamp; 4-Printing roller; 5-Support column; 6-Air pipe; 7-Air pipe distributor;

[0030] 21-Limiting hole; 22-Fixing clamp; 23-Locking hole; 24-Limiting groove;

[0031] 31-Fixing hole; 32-Clamping space. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 3 As shown, in this embodiment, a gravure printing knife holder device for improving printing adaptability is provided. The device includes a frame, a limiting rail 2, an air pipe fixing clamp 3, and an air blowing assembly. The frame includes a knife holder 1 and a support column 5 for stabilizing the knife holder. The support column 5 is fixedly connected to the printing press body, so that the knife holder 1 can be stably set. A doctor blade that cooperates with the printing plate roller 4 is provided on the knife holder 1.

[0036] The limiting rail 2 is fixedly installed on the frame. Specifically, the limiting rail 2 can be fixedly installed on the knife holder 1 or the support column 5, and the limiting rail 2 extends along the axial direction of the printing plate roller 4. The limiting rail 2 is provided with a limiting groove 24, and multiple limiting holes 21 are provided on any wall of the limiting groove 24.

[0037] The air pipe fixing clip 3 is detachably mounted on the limiting rail 2. Specifically, multiple air pipe fixing clips 3 are detachably mounted on the limiting groove 24. Since the limiting rail 2 extends along the axial direction of the printing plate roller 4, multiple air pipe fixing clips 3 are also distributed along the axial direction of the printing plate roller 4, thereby forming multiple air pipe fixing clips 3 corresponding to the printing plate roller 4.

[0038] The air tube clamp 3 has a fixing hole 31 corresponding to the limiting hole 21. Both the limiting hole 21 and the fixing hole 31 are threaded holes and can be fixedly connected by screws. The limiting hole 21 can be located at the bottom of the limiting groove 24. The fixing hole 31 and the limiting hole 21 are vertically arranged. When the air tube clamp 3 is assembled onto the limiting rail 2, it is convenient for the operator to fix the air tube clamp 3 onto the limiting rail 2 from the upper area, thereby fixing the air tube clamp 3 in the target position. The target position is determined based on the non-image area on the printing plate roller 4. Please refer to [reference needed] for the form of the non-image area. Figure 4 .

[0039] The air tube fixing clamp 3 is provided with a clamping space 32 facing the printing plate roller 4. The clamping space 32 can be formed by a clamping piece with elastic deformation, so that the air tube 6 can be stably clamped in the clamping space 32. The clamping space 32 facing the printing plate roller 4 means that the through channel of the clamping space 32 points towards the printing plate roller 4. When the air tube 6 is fixed in the clamping space 32, the air tube 6 can face the printing plate roller 4.

[0040] Furthermore, after each air tube clamp 3 is fixed in the target position, its clamping space 32 corresponds to the printing plate roller 4 and the non-image area; and after the air tube 6 is fixed in the clamping space 32, the air outlet end of the air tube 6 can extend out of the clamping space 32 and be constrained to a position aligned with the non-image area.

[0041] The air blowing assembly includes an air pipe 6 connected to an air source, which enables the blade holder 1 to have an air blowing function. Under the limiting action of the air pipe fixing clamp 3, it ensures that the air outlet end of the air pipe 6 is accurately aligned with the non-image area of ​​the printing plate roller 4, so as to achieve stable and continuous local air blowing during high-speed printing.

[0042] In summary, this application provides a stable and continuous high-speed gas through the air blowing assembly. With the cooperation of the air pipe fixing clamp 3 and the limiting rail 2, the air pipe 6 can be precisely aligned with the non-image area, achieving stable and continuous localized air blowing during high-speed printing. This effectively accelerates the curing of the ink layer in the non-image area, reduces plate contamination, and improves print adaptability and print quality. Simultaneously, it continuously suppresses ink accumulation during printing, maintaining the cleanliness of the non-image area even with a print run exceeding 20,000 meters, effectively extending the lifespan of the printing roller 4 and the doctor blade, and reducing downtime for maintenance. Furthermore, the clean non-image area facilitates direct bonding of the adhesive to the substrate, enhancing the bonding strength and ultimately improving the overall quality of the heat-shrinkable label.

[0043] The air blowing assembly also includes an air pipe distributor 7, which serves as the core component for airflow distribution. One end of the air pipe distributor 7 is connected to the air source (printer air pump), and the other end is connected to multiple air pipes 6, forming multiple airflow channels from the air source to the non-image area. Through the air pipe distributor 7, the main air path is dispersed and guided to each air pipe 6, achieving directional drying of residual ink layers in the non-image area, effectively improving the drying state of the ink layer in this area, and preventing ink transfer to the substrate.

[0044] In addition, the endotracheal distributor 7 has a regulating valve to adjust the air volume of each corresponding endotracheal tube 6, allowing for the selection of different blowing methods according to the actual conditions in the non-graphic area. The specific structural form of the endotracheal distributor 7 can refer to existing technologies, and no further restrictions are imposed here.

[0045] Fixed clamps 22 are provided at both ends of the limiting rail 2. The fixed clamps 22 can be integrally formed with the limiting rail 2 or designed separately, ensuring that the two can be fixedly connected. The fixed clamps 22 can be clamped on both sides of the support column 5, thereby restricting the limiting rail 2 to the support column 5. The fixed clamps 22 are locked to the support column 5 by screws through the locking holes 23 on the fixed clamps 22. Furthermore, the position of the limiting rail 2 on the support column 5 can be adjusted according to actual needs to improve the adaptability of the limiting rail 2.

[0046] In addition, since the air outlet of the air pipe 6 needs to extend out of the air pipe fixing clamp 3, in order to prevent the air outlet of the air pipe 6 from shifting or shaking due to high-speed air jet, a positioning groove is provided on the tool holder 1 in this embodiment. The number of positioning grooves corresponds one-to-one with the number of air pipes 6, and the clamping space 32 is aligned with the positioning groove, so that the air pipe 6 can smoothly transition from the clamping space 32 to the positioning groove. The positioning groove extends toward the printing plate roller 4, and the end of the positioning groove is aligned with the non-image area.

[0047] After the trachea 6 passes through the clamping space 32 of the trachea fixing clip 3, it can be inserted into the positioning groove and arranged along the extension direction of the positioning groove. This allows the outlet end of the trachea 6 to be precisely aligned with the non-graphic area under the limiting effect of the positioning groove. Furthermore, the positioning groove and the trachea 6 can be configured with an interference fit, ensuring the trachea 6 is stably fixed within the positioning groove. The interference fit can be achieved by: the groove wall of the positioning groove interfering with the outer wall of the trachea 6 to form a shape that surrounds or partially surrounds the trachea 6; or by providing a locking mechanism on the positioning groove that interferes with the trachea 6, locking the trachea 6 securely within the positioning groove. Specific details regarding the interference fit are not elaborated here; ensuring the trachea 6 is stably confined within the positioning groove is sufficient and falls within the scope of this application.

[0048] The air tube clamp 3 is provided with a protrusion protruding towards the limiting groove 24. The protrusion can extend into the limiting groove 24 and slide with the limiting groove 24, so that the air tube clamp 3 can only move along the axial direction of the printing plate roller 4, thereby adjusting the axial position of the air tube clamp 3 relative to the printing plate roller 4. The sliding engagement between the air tube clamp 3 and the limiting groove 24 can ensure that the air tube clamp 3 has a good positioning effect and facilitate the quick assembly of the air tube clamp 3 and the limiting rail 2. On the other hand, it can facilitate the quick adjustment of the position of the air tube clamp 3, so that the fixing hole 31 and the limiting hole 21 can be quickly aligned, thereby improving the assembly efficiency.

[0049] In some embodiments, considering that non-image / text areas are typically as follows Figure 4 As shown in the elongated area, a square nozzle can be provided at the air outlet end of the air pipe 6 facing the printing roller 4. The square nozzle can make the air outlet end of the air pipe 6 spray out a high-speed airflow of a specific shape. Furthermore, in the axial direction of the printing roller 4, the width of the square nozzle corresponds to the width of the non-image area, so that the high-speed gas sprayed out by the square nozzle can fully act on the non-image area and avoid having too much impact on other areas outside the non-image area.

[0050] This application also provides a printing press, which includes any of the above-mentioned gravure printing knife holder devices for improving printing adaptability, and the printing press includes, but is not limited to, a gravure printing press.

[0051] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0052] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A gravure printing die holder device for improving printing adaptability, characterized in that, include: Frame; The limiting rail (2) is fixedly installed on the frame. The limiting rail (2) extends along the axial direction of the printing plate roller (4). The limiting rail (2) is provided with a limiting groove (24). Multiple limiting holes (21) are provided on any wall of the limiting groove (24). Air tube fixing clip (3), a plurality of air tube fixing clips (3) are detachably disposed in the limiting groove (24), the air tube fixing clip (3) is provided with fixing holes (31) corresponding to the limiting hole (21) so that the air tube fixing clip (3) is fixed on the limiting rail (2), the air tube fixing clip (3) is provided with clamping space (32) facing the printing plate roller (4), and the clamping space (32) on each air tube fixing clip (3) corresponds to the non-image area of ​​the printing plate roller (4); The air blowing assembly includes an air tube (6) connected to an air source, the air tube (6) being fixed in the clamping space (32), and the air outlet end of the air tube (6) being constrained to be aligned with the non-graphic area.

2. The gravure printing die holder device for improving printing adaptability according to claim 1, characterized in that, The air blowing assembly includes an air pipe distributor (7), one end of which is connected to the air source, and the other end is connected to a plurality of air pipes (6).

3. The gravure printing die holder device for improving printing adaptability according to claim 2, characterized in that, The tracheal distributor (7) has a regulating valve that adjusts the air volume of each tracheal tube (6).

4. The gravure printing die holder device for improving printing adaptability according to claim 1, characterized in that, The frame includes a tool holder (1) and a support column (5) that stably supports the tool holder. The limiting rail (2) has fixed clamps (22) at both ends. The fixed clamps (22) are clamped on both sides of the support column (5). The fixed clamps (22) have locking holes (23) that lock with the support column (5).

5. The gravure printing die holder device for improving printing adaptability according to claim 4, characterized in that, The tool holder (1) is provided with a positioning groove, which extends toward the printing plate roller (4) and the end of the positioning groove is aligned with the non-image area. The air tube (6) that extends out of the clamping space (32) is located in the positioning groove. The air tube (6) is arranged along the extension direction of the positioning groove to be aligned with the non-graphic area. The positioning groove is interference-fitted with the air tube (6).

6. The gravure printing die holder device for improving printing adaptability according to claim 5, characterized in that, The number of positioning slots is the same as the number of airway fixing clips (3), and the clamping space (32) is aligned with the positioning slots one by one.

7. The gravure printing die holder device for improving printing adaptability according to claim 1, characterized in that, The air tube fixing clamp (3) is provided with a protrusion that extends into the limiting groove (24). The protrusion slides in conjunction with the limiting groove (24) to adjust the position of the air tube fixing clamp (3) in the axial direction of the printing plate roller (4).

8. The gravure printing die holder device for improving printing adaptability according to claim 1, characterized in that, The air pipe (6) has a square nozzle at its end facing the printing roller (4), and the width of the square nozzle corresponds to the width of the non-image area along the axial direction of the printing roller (4).

9. The gravure printing die holder device for improving printing adaptability according to claim 1, characterized in that, The limiting hole (21) is located at the bottom of the limiting groove (24). The fixing hole (31) and the limiting hole (21) are vertically arranged threaded holes, and the two are fixedly connected by screws.

10. A printing press, characterized in that, Includes the gravure printing knife holder device for improving printing adaptability as described in any one of claims 1-9.

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