Ink splashing prevention protection structure for photogravure press

Abstract

The utility model discloses an ink splashing prevention protection structure for a photogravure press, which comprises a fixed sleeve, a telescopic sleeve capable of sliding along the axial direction of the fixed sleeve is arranged in the fixed sleeve, and a flange plate is arranged at one end of the fixed sleeve; the outer side end, away from the flange plate, of the telescopic sleeve extends out of the fixing sleeve and is rotationally connected with a rotating ring disc through a copper sleeve, and a blocking cover is further fixedly arranged on the outer wall of the outer side end of the telescopic sleeve and is of a fan-shaped structure. A hole in one end of the plug sleeve is a round hole, a hole in the other end of the plug sleeve is a taper hole, the round hole is communicated with the taper hole, the plug sleeve is fixedly connected with the rotating ring disc through a screw, the outer diameter of the rotating ring disc is larger than that of the plug sleeve, and the rotating ring disc and the plug sleeve are both located in a covering area of the blocking cover. The printing plate roller has the advantages of preventing printing ink on the printing plate roller from splashing to a printing base material, being good in protection and sealing effect on the top plate shaft and the printing roller plug, simple in structure, convenient to disassemble and assemble, flexible and convenient to use and the like.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, specifically to an anti-splatter protection structure for gravure printing presses. Background Technology

[0002] Gravure printing is a common tool in packaging design, known for its high ink volume, good ink saturation, distinct layers, and vibrant colors. Its high-speed operation allows for large-volume printing with stable quality and consistent color within the same batch. However, gravure printing works by immersing the printing plate directly in an ink bath. Excess ink is scraped off by a doctor blade on one side of the plate, and printing is completed under the combined pressure of the printing rollers, rubber rollers, and the substrate. Because the printing plate is cylindrical, at high speeds, the ink in the ink bath is easily splashed out from both sides of the plate due to centrifugal force. This not only poses a risk of ink splashing onto the printing substrate but also results in a large amount of ink adhering to the top plate shaft and the outer surface of the printing roller plugs, which is extremely difficult to clean. The patent publication number CN203780017U discloses an anti-splatter device for a high-speed gravure printing machine. It discloses sleeve cups installed on the wall panels on the operating and transmission sides. The sleeve cups are fitted onto the top plate shaft, with one side of each sleeve cup contacting the wall panel and a cover installed on the other side. Supports are also connected to the wall panels on the operating and transmission sides, and each support is equipped with a protective cover. However, due to the large gap between the arc-shaped baffle on the support and the printing roller plug, the device suffers from poor sealing and protection of the top plate shaft and printing roller plug, complex structure, inconvenient disassembly and assembly, and lack of flexibility and ease of use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an anti-splatter protection structure for gravure printing machines, which effectively prevents ink on the printing plate roller from splashing onto the printing substrate or printing equipment. Moreover, the protective structure has a good protective and sealing effect on the top plate shaft and the printing roller plug, has a simple structure, is easy to disassemble and assemble, and can adapt to the axial extension and retraction adjustment of the top plate shaft, making it flexible and convenient to use. It can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-splatter protection structure for a gravure printing machine, comprising a fixed sleeve, wherein a telescopic sleeve that can slide along its axial direction is provided inside the fixed sleeve, and a flange coaxially arranged at one end of the fixed sleeve; the outer end of the telescopic sleeve away from the flange extends to the outside of the fixed sleeve and is rotatably connected to a rotating ring disk through a copper sleeve, the rotating ring disk having multiple connecting holes, and a baffle fixedly provided on the outer wall of the outer end of the telescopic sleeve; further comprising a plug sleeve, one end of the plug sleeve having a round hole, the other end of the plug sleeve having a conical hole, and the round hole and the conical hole communicating with each other, the plug sleeve having multiple threaded holes on one end face corresponding to the round hole, and the plug sleeve being fixedly connected to the rotating ring disk by screws passing through the connecting holes and the threaded holes, the outer diameter of the rotating ring disk being larger than the outer diameter of the plug sleeve; the baffle is a fan-shaped structure, and both the rotating ring disk and the plug sleeve are located within the coverage area of ​​the baffle.

[0005] Furthermore, the inner wall of the fixed sleeve is provided with spline grooves at equal intervals, and the outer wall of the telescopic sleeve is provided with external splines at equal intervals that are adapted to the spline grooves. The telescopic sleeve and the fixed sleeve are slidably connected through the spline grooves and the external splines.

[0006] Furthermore, the inner circumference of the rotating ring disk is provided with an annular protrusion, and the annular protrusion of the rotating ring disk is located inside the telescopic sleeve. The annular protrusion and the inner circumference of the telescopic sleeve are rotatably connected by a copper sleeve, and a rotating sealing ring is provided between the annular protrusion and the telescopic sleeve.

[0007] Furthermore, the outer circumference of the rotating ring disk is provided with an annular retaining edge.

[0008] Furthermore, an annular groove is provided on one end face of the plug sleeve corresponding to the conical hole, and a sealing ring one is provided in the annular groove; a sealing ring two is provided between the end faces of the plug sleeve and the rotating ring disk that are in contact with each other.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: This anti-splatter protection structure for gravure printing presses seals and fixes the part of the printing roller end exposed outside the printing plate roller through the end cap sleeve and rotating ring disk; it seals and protects the top plate shaft through the rotating ring disk, telescopic sleeve, and fixed sleeve; it blocks the ink thrown out from the end of the printing plate roller through the baffle, preventing the ink from splashing between the color groups of the printing unit; it seals the ends of the printing roller end and the top plate shaft through the end cap sleeve and rotating ring disk, preventing the ink from splashing onto the printing roller end and the top plate shaft, effectively preventing the ink on the printing plate roller from splashing onto the printing substrate or printing equipment. Moreover, this protective structure has a good sealing effect on the top plate shaft and the printing roller end, is simple in structure, easy to disassemble and assemble, and can adapt to the axial extension and retraction adjustment of the top plate shaft, making it flexible and convenient to use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a cross-sectional view of the present invention in use;

[0012] Figure 3 This is a cross-sectional view of the connection between the telescopic sleeve and the end cap sleeve of this utility model.

[0013] In the diagram: 1. Fixed sleeve; 2. Telescopic sleeve; 3. Rotating ring disc; 31. Annular flange; 4. Plug sleeve; 41. Annular groove; 42. Round hole; 43. Conical hole; 5. Baffle; 6. Flange; 7. Copper sleeve; 8. Sealing ring one; 9. Sealing ring two; 200. Top plate shaft; 300. Printing roller plug; 400. Side wall plate; 500. Printing plate roller. Detailed Implementation

[0014] 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. Example

[0015] Please see Figure 1-3 This utility model provides a technical solution: an anti-splatter protection structure for a gravure printing machine, including a fixed sleeve 1, a telescopic sleeve 2, a plug sleeve 4, and a baffle 5. The fixed sleeve 1 is provided with a telescopic sleeve 2 that can slide along its axial direction. The inner wall of the fixed sleeve 1 is provided with spline grooves at equal intervals. The outer wall of the telescopic sleeve 2 is provided with external splines that are adapted to the spline grooves at equal intervals. The telescopic sleeve 2 and the fixed sleeve 1 are slidably connected through the spline grooves and external splines. One end of the fixed sleeve 1 is provided with a flange 6 coaxially arranged with it. The outer end of the telescopic sleeve 2 away from the flange 6 extends to the outside of the fixed sleeve 1 and is provided with a rotating ring 3. The inner circumference of the rotating ring 3 is provided with an annular protrusion, and the annular protrusion of the rotating ring 3 is located inside the telescopic sleeve 2. The annular protrusion and the inner circumference of the telescopic sleeve 2 are rotatably connected through a copper sleeve 7. A rotating sealing ring is also provided between the annular protrusion and the telescopic sleeve 2. The rotating ring 3 is provided with multiple connecting holes.

[0016] It also includes a plug sleeve 4, with a round hole 42 at one end and a conical hole 43 at the other end, and the round hole 42 and the conical hole 43 are connected. The plug sleeve 4 has multiple threaded holes on one end face corresponding to the round hole 42, and the plug sleeve 4 is fixedly connected to the rotating ring disk 3 by screws passing through the connecting holes and the threaded holes. The outer diameter of the rotating ring disk 3 is larger than the outer diameter of the plug sleeve 4, and an annular retaining edge 31 is provided on the outer circumference of the rotating ring disk 3. The plug sleeve 4 has an annular groove 41 on one end face corresponding to the conical hole 43, and a sealing ring 8 is provided in the annular groove 41. A second sealing ring 9 is provided between the end faces of the plug sleeve 4 and the rotating ring disk 3 that are in contact with each other.

[0017] A baffle 5 is detachably fixed to the outer wall of the outer end of the telescopic sleeve 2 by bolts. The baffle 5 has a fan-shaped structure, and the rotating ring 3 and the plug sleeve 4 are both located within the coverage area of ​​the baffle 5.

[0018] In use: The fixed sleeve 1 and telescopic sleeve 2 are fitted onto the top plate shaft 200, and the fixed sleeve 1 is fixed to the side wall plate 400 using bolts and flange 6. The printing roller plug 300 is connected to the end of the top plate shaft 200. Then, the plug sleeve 4 is fitted onto the printing roller plug 300, and the rotating ring disk 3 is fixedly connected to the plug sleeve 4 using screws. Finally, the baffle 5 is fixed onto the telescopic sleeve 2. The top plate shaft 200 is moved axially by an external pushing mechanism. The printing roller plug 300, plug sleeve 4, rotating ring disk 3, telescopic sleeve 2, and baffle 5 all move together with the top plate shaft 200 until the printing roller plug 300 presses against the printing plate roller 500, and the sealing ring 8 on the plug sleeve 4 is in contact with the end face of the printing plate roller 500. During printing, the top plate shaft 200 drives the printing roller plug 300 and the printing plate roller 500 to rotate, and the plug sleeve 4 and the rotating ring disk 3 rotate together with the printing roller plug 300. The baffle 5 blocks the ink thrown out from the end of the printing plate roller 500 to prevent the ink from splashing between the printing unit color groups. The plug sleeve 4 and the rotating ring disk 3 seal the ends of the printing roller plug 300 and the top plate shaft 200 to prevent the ink from splashing onto the printing roller plug 300 and the top plate shaft 200. The fixed sleeve 1 and the telescopic sleeve 2 can not only further improve the protection of the top plate shaft 200, but also automatically adapt to the axial extension and contraction adjustment of the top plate shaft 200, making it flexible and convenient to use.

[0019] The anti-splatter protection structure for gravure printing machines disclosed in this embodiment seals and fixes the portion of the printing roller plug 300 exposed outside the printing plate roller 500 through a plug sleeve 4 and a rotating ring disk 3. The top plate shaft 200 is sealed and protected by the rotating ring disk 3, the telescopic sleeve 2, and the fixed sleeve 1. A baffle 5 blocks ink ejected from the end of the printing plate roller 500, preventing ink from splashing between printing unit color groups. The plug sleeve 4 and the rotating ring disk 3 seal the ends of the printing roller plug 300 and the top plate shaft 200, preventing ink from splashing onto them. This effectively prevents ink from the printing plate roller 500 from splashing onto the printing substrate or printing equipment. Furthermore, this protective structure provides good sealing for the top plate shaft 200 and the printing roller plug 300, has a simple structure, is easy to assemble and disassemble, and can adapt to the axial extension and retraction adjustment of the top plate shaft 200, making it flexible and convenient to use.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A splash-proof structure for a gravure printing machine, comprising a fixing sleeve, characterized in that: The fixed sleeve contains a telescopic sleeve that can slide along its axial direction. One end of the fixed sleeve has a flange coaxially arranged with it. The outer end of the telescopic sleeve away from the flange extends to the outside of the fixed sleeve and is rotatably connected to a rotating ring disk through a copper sleeve. The rotating ring disk has multiple connecting holes. A baffle is also fixedly installed on the outer wall of the outer end of the telescopic sleeve. It also includes a plug sleeve. One end of the plug sleeve has a round hole, and the other end of the plug sleeve has a conical hole, and the round hole and the conical hole are connected. The plug sleeve has multiple threaded holes on the end face corresponding to the round hole. The plug sleeve is fixedly connected to the rotating ring disk by screws passing through the connecting holes and the threaded holes. The outer diameter of the rotating ring disk is larger than the outer diameter of the plug sleeve. The baffle has a fan-shaped structure, and the rotating ring disk and the plug sleeve are both located within the coverage area of ​​the baffle.

2. The anti-splatter protection structure for a gravure printing machine according to claim 1, characterized in that: The inner wall of the fixed sleeve is provided with spline grooves at equal intervals, and the outer wall of the telescopic sleeve is provided with external splines at equal intervals that are adapted to the spline grooves. The telescopic sleeve and the fixed sleeve are slidably connected through the spline grooves and external splines.

3. The anti-splatter protection structure for a gravure printing machine according to claim 1, characterized in that: The rotating ring disk has an annular protrusion along its inner circumference, and the annular protrusion is located inside the telescopic sleeve. The annular protrusion and the inner circumference of the telescopic sleeve are rotatably connected by a copper sleeve, and a rotating sealing ring is provided between the annular protrusion and the telescopic sleeve.

4. The anti-splatter protection structure for a gravure printing machine according to claim 1, characterized in that: The outer edge of the rotating ring disk is provided with an annular retaining edge.

5. The anti-splatter protection structure for a gravure printing machine according to claim 1, characterized in that: The plug sleeve has an annular groove on one end face of the corresponding conical hole, and a sealing ring one is provided in the annular groove; a sealing ring two is provided between the end faces of the plug sleeve and the rotating ring disk that are in contact with each other.

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