Ventilated oil-passing plate cylinder

Abstract

The utility model relates to the technical field of printing plate cylinders, in particular to a ventilated oil passing plate cylinder which comprises an outer pipe body, an inner pipe body and a shaft body are arranged in the outer pipe body respectively, and the left side and the right side of the outer pipe body are connected with a left insert and a right insert respectively. One side of the left insert extends into one side of the outer pipe body and is in interference fit with the outer pipe body, a left bearing is further connected between the other side of the left insert and the gear, a right bearing is connected to the side, located on the right flange, of the right insert, and the right insert is in interference fit with the right bearing. An air inlet hole and an air outlet hole are respectively formed in the outer surface of the outer pipe body; according to the oil-passing plate cylinder structure, the inner pipe body structure is additionally arranged on the basis of an existing structure, the inner pipe body and other parts of the printing plate cylinder jointly form a closed air cavity, the rubber sleeve can be expanded, abrasion is reduced, the rubber sleeve can be better installed, the durability of the whole oil-passing plate cylinder structure is improved, and the service life of the whole oil-passing plate cylinder structure is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of printing plate cylinder technology, specifically to a breathable oiling plate cylinder. Background Technology

[0002] A printing plate cylinder is a rotating printing unit formed by fixing a printing plate (such as a flexographic, letterpress, gravure, or planographic plate) onto a roller. This roller is typically made of metal or other robust materials to ensure it can withstand sufficient pressure and wear during the printing process. Printing plate cylinders are widely used in various printing equipment and are an important component of printing presses.

[0003] A varnishing cylinder is one type of printing cylinder, referring to a cylinder in which a layer of varnish is applied to the surface of the printing plate. This treatment aims to improve the quality of printed materials, such as increasing gloss, improving abrasion resistance, and enhancing water resistance.

[0004] However, current printing plate tubes still have the following shortcomings in daily printing processes: 1. Existing printing plate tubes are made of steel and are formed by a rubber coating process. Over time, the rubber will age or wear down, requiring the entire printing plate tube to be replaced, resulting in high costs. Furthermore, since the width and diameter are fixed, different widths and diameters are needed for different printing processes, requiring many different sizes of printing plate tubes, which is cumbersome. Additionally, steel tubes are heavy and have significant inertia during operation. 2. Another type is made of double-layered aluminum tubing, but this is expensive and has a more complex manufacturing process.

[0005] Therefore, from a cost perspective, it is necessary to design a breathable oil-absorbing cylinder to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a breathable oiling cylinder. The structures 1, 3, 4, 6, and 7 described herein are all made of aluminum alloy. By adding an air cavity for ventilation to the existing oiling cylinder structure, air pressure support is provided, the rubber sleeve is slightly expanded during installation to reduce wear, and installation is more convenient. The convenience, durability, and service life of the entire structure are improved, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A ventilable oil-passing cylinder includes an outer tube body, an inner tube body and a shaft body are respectively disposed inside the outer tube body, a left insert and a right insert are respectively connected to the left and right sides of the outer tube body, a gear is also connected to the outer side of the left insert, a left flange is also disposed on the outer side of the gear away from the left insert, a right flange is also fixedly connected to the side of the shaft body located on the right insert, and the left flange and the right flange are respectively coaxially fixedly connected to the left and right sides of the shaft body, and an air inlet and an air outlet are respectively disposed on the outer surface of the outer tube body.

[0009] As a preferred embodiment of this utility model, one side of the left insert extends into one side of the outer tube and is in an interference fit with the outer tube. The other side of the left insert is also connected to the gear with a left bearing.

[0010] As a preferred embodiment of this utility model, the left bearing is interference-fitted with one side of the gear and one side of the left insert, and its inner ring is also interference-fitted with the shaft.

[0011] As a preferred embodiment of this utility model, the left flange has matching screw holes on its interior and on one side of the shaft, and the left flange and the shaft are fixed together by a left screw passing through the screw holes.

[0012] As a preferred embodiment of this utility model, a right bearing is connected to one side of the right flange on the right insert, and there is an interference fit between the right insert and the right bearing.

[0013] As a preferred embodiment of this utility model, the shaft body is provided with a retaining ring groove along its circumference, and a retaining ring is also clamped inside the retaining ring groove, and the ears at both ends of the retaining ring are aligned and clamped with the mounting groove on the right bearing side.

[0014] As a preferred embodiment of this utility model, the inside of the right flange and one side of the shaft are also provided with matching screw holes, and the right flange and the shaft are fixed by the right screw passing through the screw holes.

[0015] As a preferred embodiment of this utility model, a rubber sleeve is also fitted and fixedly installed on the outer side of the outer tube, and the rubber sleeve is made of soft material.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, a ventilated printing plate cylinder is provided. This cylinder structure adds an inner tube to the existing structure. The inner tube, together with other parts of the printing plate cylinder, forms a sealed air cavity to provide air pressure support, slightly expand the rubber sleeve during installation to reduce wear, facilitate installation, and allow for the replacement of rubber sleeves of different sizes according to printing needs. An air inlet is also provided on the left insert, allowing for quick-connect couplings to easily introduce or expel air from the air cavity. The air inlet design establishes a connection between the air cavity and an external air source. A groove and two semi-circular notches are provided on the right insert, forming airflow channels within the air cavity. These channels ensure smooth airflow within the air cavity, achieving the desired air pressure effect or process requirements. In summary, by adding an inner tube and modifying the design of the left and right inserts, the structure of the entire printing plate cylinder is strengthened. These modifications facilitate the installation of rubber sleeves, allow for the replacement of rubber sleeves of different sizes according to printing needs, and improve the overall economy, structural durability, and service life of the printing plate cylinder.

[0018] 2. In this utility model, a ventilated oil-absorbing cylinder is provided. The outer sleeve of the oil-absorbing cylinder is made of a soft material, which differs from the hard rubber sleeve on traditional steel oil-absorbing cylinders. During installation, the soft rubber sleeve can be slightly expanded by air pressure, making it easier to push into the outer diameter of the oil-absorbing cylinder. Utilizing air pressure to expand and adhere the sleeve to the oil-absorbing cylinder makes this installation method simpler than the traditional rubber-coating process and reduces damage and errors during installation. Because the rubber sleeve is soft and installed by air pressure, replacement only requires venting to remove the rubber sleeve and then reinstalling it. Simply replace the sleeve with another size; this design greatly simplifies the replacement process and improves work efficiency. Traditional varnishing tubes require complete replacement when the sleeve ages or wears out, which is costly. However, the design in this paper only requires replacing the sleeve, without replacing the entire varnishing tube, thus greatly reducing usage costs. The sleeve can be prepared in various widths and diameters according to printing needs, allowing the varnishing tube to adapt to different printing processes and requirements. Due to the replaceability of the sleeve and the availability of multiple sizes, the varnishing tube is more flexible in dealing with different printing tasks, eliminating the need to prepare multiple sizes of varnishing tubes. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the oil-absorbing cylinder of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the oil-passing cylinder of this utility model;

[0021] Figure 3 This is a schematic diagram of the air inlet and outlet structure of the oil-passing cylinder of this utility model;

[0022] Figure 4 This is a schematic diagram of the right insert of the oil-coating cylinder of this utility model;

[0023] Figure 5 A cross-sectional schematic diagram of the oil-absorbing cylinder of this utility model after the rubber sleeve has been installed;

[0024] In the diagram: 1. Outer tube; 2. Shaft; 3. Left insert; 4. Right insert; 5. Gear; 6. Left flange; 7. Right flange; 8. Air inlet; 9. Air outlet; 10. Left bearing; 11. Bearing spacer; 12. Left screw; 13. Right bearing; 14. Snap ring; 15. Right screw; 16. Rubber sleeve; 17. Inner tube. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] For examples, please refer to Figure 1-5 This utility model provides a technical solution:

[0030] A ventilable oil-passing cylinder includes an outer tube 1, an inner tube 17 and a shaft 2 are respectively provided inside the outer tube 1, a left insert 3 and a right insert 4 are respectively connected to the left and right sides of the outer tube 1, a gear 5 is also connected to the outside of the left insert 3, a left flange 6 is also provided on the outside of the gear 5 away from the left insert 3, a right flange 7 is also fixedly connected to the side of the shaft 2 located on the right insert 4, and the left flange 6 and the right flange 7 are respectively coaxially fixedly connected to the left and right sides of the shaft 2, and an air inlet 8 and an air outlet 9 are respectively provided on the outer surface of the outer tube 1, wherein the air outlet 9 is a row of air outlets, and several air outlets 9 can also be designed as needed.

[0031] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 One side of the left insert 3 extends into one side of the outer tube 1 and is interference-fitted with the outer tube 1. The interference fit between the left insert 3 and the outer tube 1 ensures a tight connection between them, preventing loosening and thus improving the stability of the entire structure. A left bearing 10 is also connected between the other side of the left insert 3 and the gear 5. The left bearing 10 is interference-fitted with one side of the gear 5 and one side of the left insert 3, and its inner ring is also interference-fitted with the shaft 2. The interference fit between the left bearing 10 and the gear 5, the left insert 3, and the shaft 2 is also interference-fitted. The interference fit also enhances the connection strength between these components, making the entire transmission system more robust; the left bearing 10 is connected to a bearing spacer 11 on the side away from the left insert 3, and the left bearing 10 and the bearing spacer 11 are in clearance fit; as a connecting component, the interference fit between the inner ring of the left bearing 10 and the shaft 2 helps to reduce friction during rotation and extend service life; the clearance fit between the left bearing 10 and the bearing spacer 11 allows for a certain radial movement, which helps to reduce friction and wear caused by thermal expansion and contraction or load changes.

[0032] For details, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 5Both the interior of the left flange 6 and one side of the shaft 2 are provided with matching screw holes, and the left flange 6 and the shaft 2 are fixed together by left screws 12 passing through the screw holes. This connection method ensures a stable connection between the two, which is crucial for the overall structure and function of the oiling cylinder, as it prevents loosening or displacement caused by vibration or load changes during operation. The matching screw hole design means that the left flange 6 and the shaft 2 must be precisely aligned during assembly, which helps ensure the accurate assembly of the entire oiling cylinder. Precise assembly is crucial for the performance and lifespan of mechanical components, as it reduces unnecessary friction and wear and improves overall efficiency. The stable connection between the left flange 6 and the shaft 2 not only helps maintain the overall structural integrity of the oiling cylinder, but also enhances the strength of the entire structure. This is especially important for applications subject to heavy loads or high pressure, as it ensures that the oiling cylinder maintains stable and reliable performance under harsh conditions.

[0033] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 The right insert 4 is connected to the right bearing 13 on one side of the right flange 7, and there is an interference fit between the right insert 4 and the right bearing 13. The interference fit between the right insert 4 and the right bearing 13 ensures a tight connection between the two, making it less prone to loosening. This tight connection helps to enhance the overall structural stability of the oiling cylinder and prevents loosening or displacement caused by vibration or load changes during operation. Moreover, as a transmission component, the tight fit of the right bearing 13 helps to reduce friction and resistance during rotation, thereby improving transmission efficiency. This is crucial for mechanical systems that require high-efficiency transmission and can ensure that the oiling cylinder maintains stable performance during operation. The use of interference fit helps to reduce the relative movement between components, thereby reducing wear. The tight connection between the right insert 4 and the right bearing 13 can extend the service life of these components, reduce failures and downtime caused by wear, and help ensure the precision and positioning accuracy of the oiling cylinder during assembly.

[0034] For details, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 5The shaft 2 has a retaining ring groove along its circumference, and a retaining ring 14 is secured inside the retaining ring groove. The ears at both ends of the retaining ring 14 are aligned and secured with the mounting groove on one side of the right bearing 13. The retaining ring 14 is secured in the retaining ring groove of the shaft 2, and its ears at both ends are aligned and secured with the mounting groove of the right bearing 13. This structure effectively prevents the right bearing 13 from moving axially, ensuring a stable installation of the bearing. This is crucial for preventing bearing detachment and maintaining the stability of the transmission system. The precise installation of the retaining ring 14 requires that the retaining ring groove of the shaft 2 and the mounting groove of the right bearing 13 be precisely aligned. This precise alignment not only improves assembly accuracy but also ensures the accuracy and reliability of the entire transmission system. Furthermore, it allows for convenient inspection and replacement of worn or damaged parts without requiring large-scale disassembly of the entire system. The addition of the retaining ring 14 not only provides axial fixation but also enhances the structural strength of the shaft 2 to a certain extent. This enhancement helps resist deformation or damage caused by load changes or vibration.

[0035] For details, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 5 Both the inside of the right flange 7 and one side of the shaft 2 are equipped with matching screw holes, and the right flange 7 and shaft 2 are fixed together using right screws 15 passing through these screw holes. This connection method ensures a stable connection between the two. This stability is crucial for the overall structure and function of the oiling cylinder, as it prevents loosening or displacement caused by vibration or load changes during operation. The matching screw hole design means that the right flange 7 and shaft 2 must be precisely aligned during assembly, which helps ensure the accurate assembly of the entire oiling cylinder. Precise assembly is essential for the performance and lifespan of mechanical components, as it reduces unnecessary friction and wear, improving overall efficiency. Using screws for fixing means that components can be relatively easily disassembled and replaced when needed. This is very important for the maintenance and upkeep of the oiling cylinder, as it allows for easy inspection and replacement of worn or damaged parts, extending the service life of the entire equipment.

[0036] Example 2

[0037] This embodiment is basically the same as Embodiment 1, the only difference being the outer rubber sleeve 16 of the outer tube 1. For details, please refer to... Figure 5A rubber sleeve 16 is also fixedly installed on the outer side of the outer tube body 1, and the rubber sleeve 16 is made of soft material. Since the rubber sleeve 16 is soft and is installed by air pressure, the rubber sleeve 16 can be slightly expanded by the air pressure when it is installed into the printing plate cylinder. It can be easily pushed into the tube body of the printing plate cylinder and fitted onto the outer diameter of the printing plate cylinder. After the air pressure is stopped, the rubber sleeve is attached to the printing plate cylinder. Therefore, when replacing it, you only need to purge the air to remove the rubber sleeve 16 and then install a rubber sleeve 16 of another size. This design greatly simplifies the replacement process and improves work efficiency. At the same time, the rubber sleeve 16 can be prepared in various sizes according to the width and diameter required for printing. When replacing it, you only need to replace the rubber sleeve 16 and then install a rubber sleeve 16 of another size. Only the rubber sleeve 16 needs to be replaced. It is not only simple and convenient, but also greatly saves the user's operating costs.

[0038] 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 ventilable oil-absorbing cylinder, comprising an outer tube (1), characterized in that: The outer tube (1) is provided with an inner tube (17) and a shaft (2) respectively. The left and right sides of the outer tube (1) are respectively connected to a left insert (3) and a right insert (4). A gear (5) is also connected to the outside of the left insert (3). A left flange (6) is also provided on the outside of the gear (5) away from the left insert (3). A right flange (7) is also fixedly connected to the side of the shaft (2) located on the right insert (4). The left flange (6) and the right flange (7) are respectively fixedly connected to the left and right sides of the shaft (2) on the same axis. An air inlet (8) and an air outlet (9) are also provided on the outer surface of the outer tube (1).

2. The ventilated oil-absorbing cylinder according to claim 1, characterized in that: One side of the left insert (3) extends into the inner side of the outer tube (1) and is in an interference fit with the outer tube (1). The other side of the left insert (3) is also connected to the gear (5) by a left bearing (10).

3. The ventilated oil-absorbing cylinder according to claim 2, characterized in that: The left bearing (10) is interference-fitted with one side of the gear (5) and one side of the left insert (3), and its inner ring is also interference-fitted with the shaft (2).

4. The ventilated oil-absorbing cylinder according to claim 2, characterized in that: The left bearing (10) is connected to a bearing spacer (11) on the side away from the left insert (3), and the left bearing (10) and the bearing spacer (11) are in clearance fit.

5. The ventilated oil-absorbing cylinder according to claim 1, characterized in that: The left flange (6) and the shaft (2) are provided with matching screw holes, and the left flange (6) and the shaft (2) are fixed by a left screw (12) passing through the screw holes.

6. The ventilated oil-absorbing cylinder according to claim 1, characterized in that: The right insert (4) is connected to a right bearing (13) on one side of the right flange (7), and there is an interference fit between the right insert (4) and the right bearing (13).

7. The ventilated oil-absorbing cylinder according to claim 1, characterized in that: The shaft (2) has a retaining ring groove along its circumference, and a retaining ring (14) is also clamped inside the retaining ring groove. The ears at both ends of the retaining ring (14) are aligned and clamped with the mounting groove on one side of the right bearing (13).

8. The ventilated oil-absorbing cylinder according to claim 1, characterized in that: Both the inside of the right flange (7) and one side of the shaft (2) are provided with matching screw holes, and the right flange (7) and the shaft (2) are fixed together by right screws (15) passing through the screw holes.

9. The ventilated oil-absorbing cylinder according to claim 1, characterized in that: The outer tube (1) is also fitted with a rubber sleeve (16) which is fixedly installed on the outside of the tube body (1), and the rubber sleeve (16) is made of soft material.

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