Printing machine roller

Abstract

The utility model discloses a printing machine cylinder, and particularly relates to the technical field of printing machines, the printing machine cylinder comprises a center rod and two circular sealing plates, a supporting inner cylinder is arranged outside the center rod, a plurality of supporting raised lines are arranged between the center rod and the supporting inner cylinder, an outer chromium-plated cylinder is detachably arranged outside the supporting inner cylinder, and the outer chromium-plated cylinder is provided with an inner chromium-plated cylinder. A heating assembly is arranged between the outer chromium plating cylinder and the supporting inner cylinder, and the two circular sealing plates are symmetrically arranged at the two ends of the center rod through fasteners. The rotary drum is formed by combining the center rod, the supporting inner drum, the outer chromium-plated drum and the like, the outer chromium-plated drum on the outer layer can be independently replaced after being damaged, a brush plating mode is not needed for repairing, poor repairing is avoided, the subsequent printing quality is guaranteed, the round sealing plate is firstly disassembled during replacement, then the outer chromium-plated drum is pulled outwards, and the replacement efficiency is improved. And the outer chromium-plated cylinder is separated from the supporting inner cylinder, and then a new outer chromium-plated cylinder is replaced, so that the operation is relatively convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a printing machine roller. Background Art

[0002] A printing press is a machine for printing text and images, among which the printing press cylinder is a vital component of the printing press, responsible for carrying the printing plate, transferring ink, and contacting with paper or other printing materials to achieve image transfer. The surface finish and geometric accuracy of the printing press cylinder will have a significant impact on the quality of the printed product, especially when printing fine prints, the slightest error will reduce the overall effect of the print.

[0003] The surface of the existing used rollers will have thick and hard printing ink remaining, and there will be more dirt in the depressions. Since most rollers are integral structures, it is not convenient to replace parts, so brush plating is currently used for repair. However, the bonding strength between the coating and the substrate is low, and poor repairs often occur, which in turn affects the subsequent printing quality. Utility Model Content

[0004] The utility model aims to provide a printing press cylinder to solve the above-mentioned technical deficiencies.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a printing press cylinder, comprising:

[0006] A center rod, the outside of which is provided with a supporting inner cylinder, and a plurality of supporting convex strips are provided between the center rod and the supporting inner cylinder, the outside of the supporting inner cylinder is detachably provided with an outer chrome-plated cylinder, and a heating assembly is provided between the outer chrome-plated cylinder and the supporting inner cylinder;

[0007] Two circular sealing plates are symmetrically provided with two ends of a central rod through fasteners.

[0008] Preferably, the heating assembly comprises:

[0009] An embedding groove, wherein the embedding groove is provided on the supporting convex strip;

[0010] An electric heating plate, the electric heating plate being inserted and matched in the embedding groove;

[0011] A heat conducting plate is in contact with the inner wall of the outer chrome-plated cylinder, and the electric heating plate is in contact with the heat conducting plate.

[0012] Preferably, a limiting groove is provided on the inner wall of the outer chrome-plated cylinder, and a limiting convex strip is fixed on the outer wall of the electric heating plate, and the limiting convex strip is inserted and matched with the limiting groove.

[0013] Preferably, the diameter of the circular sealing plate is larger than the outer diameter of the heat conducting plate, and the diameter of the circular sealing plate is smaller than the outer diameter of the outer chrome-plated cylinder.

[0014] Preferably, a connecting shaft is fixed to the opposite ends of the two circular sealing plates.

[0015] Preferably, the fastener includes a first screw hole, a second screw hole and a fastening screw, the first screw hole is opened on the circular sealing plate, the second screw hole is opened at both ends of the center rod, the fastening screw can be screwed through the first screw hole, and the end of the fastening screw is screwed into the second screw hole.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The roller of the utility model is composed of a central rod, a supporting inner cylinder and an outer chrome-plated cylinder. After the outer chrome-plated cylinder of the outer layer is damaged, it can be replaced independently without the need for brush plating to repair it, thus avoiding the occurrence of poor repair and ensuring the subsequent printing quality. When replacing, the circular sealing plate is first removed, and then the outer chrome-plated cylinder is pulled outward to separate the outer chrome-plated cylinder from the supporting inner cylinder, and then a new outer chrome-plated cylinder is replaced, which is more convenient.

[0018] When installing the outer chrome-plated cylinder, the limiting convex strip can be embedded in the limiting groove, so as to limit the installed outer chrome-plated cylinder and prevent the outer chrome-plated cylinder from rotating.

[0019] 2. The utility model sets an embedding groove, an electric heating plate and a heat conducting plate, and uses the electric heating plate to generate heat and transfer it to the heat conducting plate. The arc-shaped heat conducting plate can evenly transfer the heat to the outer chrome-plated cylinder, and then the temperature of the outer chrome-plated cylinder can be increased, so that the ink can be dried quickly after printing, thereby improving the drying efficiency of the finished product after printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is an exploded view of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the utility model;

[0023] Figure 3 This is the appearance diagram of the utility model.

[0024] Description of reference numerals:

[0025] 1. Center rod; 2. Support inner cylinder; 3. Heat conduction plate; 4. External chrome-plated cylinder; 5. Round sealing plate; 6. Connecting shaft; 7. Support convex strip; 8. Electric heating plate; 9. Embedded groove; 10. Limiting groove; 11. First screw hole; 12. Second screw hole; 13. Fastening screw; 14. Limiting convex strip. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1 This is an exploded diagram of the utility model, and combined with Figure 2-Figure 3 As shown, the printing press cylinder includes a center rod 1 and two circular sealing plates 5, a supporting inner cylinder 2 is provided on the outside of the center rod 1, and a plurality of supporting ridges 7 are provided between the center rod 1 and the supporting inner cylinder 2, an outer chrome-plated cylinder 4 is detachably provided on the outside of the supporting inner cylinder 2, the outer chrome-plated cylinder 4 is replaceable, and the outer layer can be replaced after the surface of the cylinder is damaged, a heating component is provided between the outer chrome-plated cylinder 4 and the supporting inner cylinder 2, the heating component can heat the outer chrome-plated cylinder 4 to help the ink dry quickly after printing, two circular sealing plates 5 are symmetrically provided at both ends of the center rod 1 through fasteners, and a connecting shaft 6 is fixed on the opposite ends of the two circular sealing plates 5, and the connecting shaft 6 is installed on a driving member (driving motor) in the printing press, and the driving member can be used to drive the cylinder to rotate.

[0028] Among them, the diameter of the circular sealing plate 5 is larger than the outer diameter of the heat conducting plate 3, and the diameter of the circular sealing plate 5 is smaller than the outer diameter of the outer chrome-plated cylinder 4. After the circular sealing plate 5 is installed, the circular sealing plate 5 can be used to press the outer chrome-plated cylinder 4 to ensure the stability of the outer chrome-plated cylinder 4 sleeved on the periphery, and the circular sealing plate 5 does not bulge outward to avoid affecting the printing.

[0029] See also Figure 1 As shown, the fastener includes a first screw hole 11, a second screw hole 12 and a fastening screw 13. The first screw hole 11 is opened on the circular sealing plate 5, and the second screw hole 12 is opened at both ends of the center rod 1. The fastening screw 13 can be screwed through the first screw hole 11, and the end of the fastening screw 13 is screwed and matched with the second screw hole 12.

[0030] Based on the above technical solutions:

[0031] After the outer chrome-plated cylinder 4 of the outer layer is damaged, it can be replaced. When replacing, first remove the circular sealing plate 5, and then pull the outer chrome-plated cylinder 4 outward to separate the outer chrome-plated cylinder 4 from the supporting inner cylinder 2. There is no need to use brush plating for repair, which avoids the occurrence of poor repair and ensures the subsequent printing quality.

[0032] When installing the outer chrome-plated cylinder 4, first sleeve the outer chrome-plated cylinder 4 on the outside of the supporting inner cylinder 2, then cover it with the circular sealing plate 5, and then screw the fastening screw 13 through the first screw hole 11 and into the second screw hole 12 for limiting.

[0033] In the specific implementation of the present utility model, refer to Figure 1 As shown, the heating assembly includes:

[0034] The embedding groove 9 is provided on the supporting convex strip 7;

[0035] An electric heating plate 8, which is inserted and matched in the embedding groove 9;

[0036] The heat conducting plate 3 is in contact with the inner wall of the outer chrome-plated cylinder 4 , and the electric heating plate 8 is in contact with the heat conducting plate 3 .

[0037] Through the above, by starting the electric heating plate 8, the electric heating plate 8 generates heat and transfers it to the heat conducting plate 3. The arc-shaped heat conducting plate 3 can evenly transfer the heat to the outer chrome-plated cylinder 4, thereby increasing the temperature of the outer chrome-plated cylinder 4, so that the ink can be dried quickly after printing, thereby improving the drying efficiency of the finished product after printing.

[0038] In addition, see Figure 1 As shown, a limiting groove 10 is provided on the inner wall of the outer chrome-plated cylinder 4 , and a limiting convex strip 14 is fixed on the outer wall of the electric heating plate 8 , and the limiting convex strip 14 is inserted and matched with the limiting groove 10 .

[0039] Specifically, when installing the outer chrome-plated cylinder 4 , the limiting convex strip 14 can be embedded in the limiting groove 10 , so as to limit the installed outer chrome-plated cylinder 4 and prevent the outer chrome-plated cylinder 4 from rotating.

[0040] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A printing press cylinder, characterized in that: include: A central rod (1), a supporting inner cylinder (2) is provided on the outside of the central rod (1), a plurality of supporting ridges (7) are provided between the central rod (1) and the supporting inner cylinder (2), an outer chrome-plated cylinder (4) is detachably provided on the outside of the supporting inner cylinder (2), and a heating assembly is provided between the outer chrome-plated cylinder (4) and the supporting inner cylinder (2); Two circular sealing plates (5) are symmetrically provided at two ends of the central rod (1) via fasteners.

2. A printing press cylinder according to claim 1, characterized in that: The heating assembly comprises: An embedding groove (9), wherein the embedding groove (9) is formed on the supporting convex strip (7); An electric heating plate (8), wherein the electric heating plate (8) is inserted and matched in the embedding groove (9); A heat conducting plate (3), the heat conducting plate (3) is in contact with the inner wall of the outer chrome-plated cylinder (4), and the electric heating plate (8) is in contact with the heat conducting plate (3).

3. A printing press cylinder according to claim 2, characterized in that: The inner wall of the outer chrome-plated cylinder (4) is provided with a limiting groove (10), and the outer wall of the electric heating plate (8) is fixed with a limiting convex strip (14), and the limiting convex strip (14) is inserted and matched with the limiting groove (10).

4. A printing press cylinder according to claim 2, characterized in that: The diameter of the circular sealing plate (5) is greater than the outer diameter of the heat conducting plate (3), and the diameter of the circular sealing plate (5) is smaller than the outer diameter of the outer chrome-plated cylinder (4).

5. A printing press cylinder according to claim 1, characterized in that: A connecting shaft (6) is fixed to the ends of the two circular sealing plates (5) that are away from each other.

6. A printing press cylinder according to claim 1, characterized in that: The fastener comprises a first screw hole (11), a second screw hole (12) and a fastening screw (13); the first screw hole (11) is formed on the circular sealing plate (5); the second screw hole (12) is formed at two ends of the center rod (1); the fastening screw (13) can be screwed through the first screw hole (11), and the end of the fastening screw (13) is screwed into the second screw hole (12).

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