Cylinder body structure of plate cylinder of printing machine

Abstract

The utility model relates to a cylinder body structure of a plate cylinder of a printing machine. Comprising a barrel wall, a barrel-shaped base arranged in the barrel wall, a two-way threaded rod rotationally arranged in the barrel-shaped base, moving blocks in threaded connection with two threaded sections of the two-way threaded rod correspondingly, hinge bases arranged on the moving blocks at intervals in the circumferential direction, a plurality of abutting plates arranged between the barrel-shaped base and the barrel wall, and hinge matching bases arranged at the two ends of the inner sides of the abutting plates. And the connecting rods are connected between the hinged matching seats and the adjacent hinged seats in a hinged mode, so that when the two-way threaded rods rotate in the forward direction, the moving blocks move outwards relatively, and the abutting plates are pushed outwards through the connecting rods to abut against the inner side of the cylinder wall. Compared with the prior art, the supporting plate is unfolded and folded by rotating the two-way threaded rod, then the limiting and fixing work of the cylinder wall is rapidly achieved, the device is suitable for cylinder walls of different specifications, flexibility is improved, replacement and installation work of different cylinder walls can be conveniently carried out according to needs, and meanwhile the maintenance efficiency of the cylinder walls is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing plate cylinders of printing presses and relates to a cylinder body structure of a printing plate cylinder of a printing press. Background Art

[0002] The cylindrical structure of a brush plate cylinder is a crucial component of a printing press, responsible for supporting the printing plate and ensuring uniform application of pressure and ink during the printing process. A Chinese patent application (publication number: CN203438647U) discloses a cardboard watermark printing cylinder comprising a printing plate cylinder wall, an inner film layer laminated to the outer side of the printing plate cylinder wall, an elastic gasket layer laminated to the outer side of the inner film layer, an outer film layer laminated to the outer side of the elastic gasket layer, and a printing plate laminated to the outer side of the outer film layer. This utility model has a simple structure and low manufacturing cost. It can effectively reduce the phenomenon of white spots in printing; reduce the probability of plate throw-off caused by centrifugation; and help improve watermark efficiency, enhance color printing effects, and increase the speed of the printing machine. However, this type of cylinder does not have a mechanism for quickly disassembling and replacing the cylinder wall. In actual operation, if different types of cylinder walls need to be replaced for printing, not only is the disassembly and replacement process time-consuming and labor-intensive, but the cylinder walls must also be of the same specifications to ensure stability after replacement, reducing flexibility and requiring improvement. Utility Model Content

[0003] The purpose of the utility model is to provide a printing press plate cylinder body structure, which is used to solve the problem that when traditional cylinders are replaced with different types of cylinder walls for printing, not only is the disassembly and replacement process time-consuming and labor-intensive, but the cylinder walls also need to have the same specifications to ensure stability after replacement, which reduces flexibility.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] The utility model provides a cylinder structure of a plate cylinder of a printing press, comprising a cylinder wall, a cylindrical base arranged in the cylinder wall, a bidirectional threaded rod rotatably arranged in the cylindrical base, a moving block respectively screwed to two threaded sections of the bidirectional threaded rod, an articulated seat arranged on the moving block at intervals along the circumferential direction, a plurality of abutment plates arranged between the cylindrical base and the cylinder wall, an articulated matching seat arranged at both ends of the inner side of the abutment plate, and a connecting rod articulatedly connected between the articulated matching seat and the adjacent articulated seat, so that when the bidirectional threaded rod rotates in the forward direction, the moving block moves relatively outward to push the abutment plate outward through the connecting rod to abut against the inner side of the cylinder wall.

[0006] Furthermore, when the bidirectional threaded rod rotates in the opposite direction, the movable block moves inward relative to the cylinder wall, and the abutment plate moves away from the cylinder wall. The bidirectional threaded rod has thread segments with different directions, so that when the bidirectional threaded rod rotates in the forward direction, the movable block is simultaneously driven outward, and when the bidirectional threaded rod rotates in the reverse direction, the movable block is simultaneously driven inward. This allows the abutment plate to be stored or ejected in conjunction with the connecting rod.

[0007] Furthermore, the number of the moving blocks is two, and each moving block is provided with three hinged seats spaced apart along its circumference.

[0008] Furthermore, the number of the abutment plates is three, and the articulated mating seats are provided at both ends of the inner side of each abutment plate to form three groups of articulated mating seats. One end of the connecting rod is articulated to the articulated seat, and the other end is articulated to the articulated mating seat.

[0009] Furthermore, a leakage groove is provided on the cylindrical base along its circumference, and the connecting rod passes through the leakage groove and is hinged to the abutment plate.

[0010] Furthermore, a turning handle is fixedly provided on one end of the bidirectional threaded rod.

[0011] Furthermore, the cylindrical base is provided with a bearing, and the bidirectional threaded rod is rotatably connected to the cylindrical base via the bearing. The bidirectional threaded rod is rotatably connected to the cylindrical base via the bearing. When the bidirectional threaded rod rotates, it rotates smoothly within the cylindrical base via the bearing. Due to the presence of the bearing, this rotation reduces friction and wear, improving mechanical efficiency and service life. By leveraging the friction-reducing and support functions of the bearing and the driving characteristics of the bidirectional threaded rod, an efficient and reliable mechanical connection and transmission method is achieved.

[0012] Furthermore, the length of the bidirectional threaded rod is greater than the length of the cylindrical base and the cylindrical wall, thereby facilitating the rotation of the bidirectional threaded rod.

[0013] Furthermore, a pad is provided on the outer surface of the abutment plate.

[0014] Furthermore, the abutment plate and the backing plate are connected via a magnetic patch or a pressure-sensitive adhesive.

[0015] Furthermore, when the abutment plate and the backing plate are connected by magnetic force, the outer surface of the abutment plate and the inner surface of the backing plate are coated with a layer of magnetic material or a magnetic patch to connect the abutment plate and the backing plate.

[0016] Furthermore, when the abutment plate and the backing plate are connected by the pressure-sensitive adhesive, a layer of pressure-sensitive adhesive is coated on the outer surface of the abutment plate and the inner surface of the backing plate to connect the abutment plate and the backing plate.

[0017] Furthermore, the thickness of the pad is 1-2 mm.

[0018] Furthermore, the pad is a rubber pad. The pad made of rubber material can effectively improve the buffering effect, increase the friction force during the pad clamping process, and avoid causing damage to the inner wall of the cylinder.

[0019] Furthermore, the pad is provided with ridges, which play an anti-slip role.

[0020] Furthermore, the ridges are provided on the outer surface of the pad.

[0021] When the present invention is used, the cylinder wall is first sleeved on the surface of the cylindrical base, and then the handle on the bidirectional threaded rod is rotated. At this time, the moving block can be driven to move in the opposite direction (outward) along the bidirectional threaded rod under the action of the bidirectional thread, and the connecting rod can be driven to change its angle and position. Then, under the action of the connecting rod, the abutment plate can be driven to be stretched outward at the same time, thereby driving the abutment plate to abut against the inner side of the cylinder wall at the same time, thereby completing the fixation of the cylinder wall. When a different cylinder wall needs to be replaced, the bidirectional threaded rod is rotated in the opposite direction, and under the joint action of the connecting rod, the abutment plate can be driven to retract (move inward), thereby quickly releasing the limiting effect of the cylinder wall, thereby improving the replacement and maintenance efficiency.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) The utility model is provided with a bidirectional threaded rod, a turning handle, a moving block, an articulated seat, a connecting rod, an articulated matching seat, and a stop plate. The bidirectional threaded rod can be rotated to open and close the stop plate, thereby quickly achieving the position limiting and fixing work of the cylinder wall. The utility model is suitable for cylinder walls of different specifications, improves flexibility, facilitates the replacement and installation of different cylinder walls as needed, and improves the maintenance efficiency of the cylinder wall.

[0024] 2) When the utility model replaces different types of cylinder walls for printing, the disassembly and replacement process saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the plate cylinder of the printing press in the present invention;

[0026] Figure 2 This is a partial structural diagram of the plate cylinder of the printing press in the present utility model;

[0027] Figure 3 This is an exploded view of part of the structure of the plate cylinder of the printing press in the present invention;

[0028] Figure 4 This is an exploded view of part of the structure of the plate cylinder of the printing press in the present invention;

[0029] Description of the marks in the figure:

[0030] 1-cylindrical base, 2-leakage groove, 3-bearing, 4-bidirectional threaded rod, 5-handle, 6-moving block, 7-hinge seat, 8-connecting rod, 9-hinge matching seat, 10-button, 11-pad, 12-convex ridge, 13-cylinder wall. DETAILED DESCRIPTION

[0031] The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0033] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0034] In the following embodiments, unless otherwise specified, raw materials or processing techniques are conventionally available in the market or conventional processing techniques are used. Unless otherwise specified, functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0035] Example:

[0036] A printing press plate cylinder body structure, Figure 1 This is a schematic diagram of the structure of the plate cylinder of the printing press. Figure 2 This is a partial structural diagram of the printing plate cylinder of a printing press. Figure 3 and Figure 4This is an exploded view of the partial structure of the printing plate cylinder of the printing press. It can be seen that the printing plate cylinder structure of the printing press includes a cylinder wall 13, a cylindrical base 1 arranged in the cylinder wall 13, a bidirectional threaded rod 4 and a bearing 3 rotatably arranged in the cylindrical base 1, a turning handle 5 arranged at one end of the bidirectional threaded rod 4, a moving block 6 screwed to the two threaded sections of the bidirectional threaded rod 4, three articulated seats 7 arranged on the moving block 6 at intervals along the circumferential direction, three abutment plates 10 arranged between the cylindrical base 1 and the cylinder wall 13 at intervals along the circumferential direction, three groups of articulated matching seats 9 arranged at both ends of the inner sides of the three abutment plates 10, a connecting rod 8 hingedly connected between the articulated matching seat 9 and the adjacent articulated seat 7, and a 1-2 mm natural rubber pad 11 arranged on the outer surface of the abutment plate 10. A leakage groove 2 is opened on the cylindrical base 1 along its circumference, and the connecting rod 8 passes through the leakage groove 2 and is hinged to the abutment plate 10. There are three hinged seats 7 on each moving block 6, and they are distributed in a circular shape on the surface of the moving block 6. By setting three connecting seats A7, the three abutment plates 10 can be used to quickly fix the barrel wall 13, and the stability of the barrel wall 13 during installation can be effectively improved. The bidirectional threaded rod 4 is rotatably connected to the cylindrical base 1 through the bearing 3. The pad 11 made of rubber material can effectively improve the buffering effect, increase the friction force during the clamping process of the pad 11, and avoid causing clamping damage inside the barrel wall 13. In addition, the abutment plate 10 and the pad 11 are connected by pressure-sensitive adhesive, and the pad 11 is provided with a ridge 12 to play an anti-slip role. When the bidirectional threaded rod 4 rotates, the bidirectional threaded rod 4 will rotate smoothly in the cylindrical base 1 through the bearing 3, and due to the presence of the bearing 3 with friction reduction and support functions, this rotation will reduce friction and wear, and improve mechanical efficiency and service life. When the bidirectional threaded rod 4 rotates in the forward direction, the two movable blocks 6, respectively threadedly connected to the two threaded sections of the bidirectional threaded rod 4, move outward relative to each other, thereby pushing the abutment plate 10 outward through the connecting rod 8 and causing it to abut against the inner side of the cylinder wall 13. That is, when the bidirectional threaded rod 4 rotates in the reverse direction, the movable blocks 6 move inward relative to each other, causing the abutment plate 10 to move away from the cylinder wall 13. This allows the connecting rod 8 to cooperate with the abutment plate 10 to be stored or ejected.

[0037] When using the printing plate cylinder body of the printing press with this structure in the present embodiment, first, the cylinder wall 13 is put on the surface of the cylindrical base 1, and then the handle 5 on the bidirectional threaded rod 4 is rotated forward. At this time, under the action of the bidirectional thread, the two moving blocks 6 can be driven to move relatively outward along the bidirectional threaded rod 4, and the connecting rod 8 can be driven to change the angle and position. Then, under the action of the connecting rod 8, the abutment plate 10 can be driven to be stretched outward at the same time, so that the abutment plate 10 can be driven to press against the inner side of the cylinder wall 13 at the same time, thereby completing the fixation of the cylinder wall 13. When a different cylinder wall 13 needs to be replaced, the bidirectional threaded rod 4 is rotated in the opposite direction. Under the joint action of the connecting rod 8, the abutment plate 10 can be driven to retract (move inward), and then the limiting effect of the cylinder wall 13 can be quickly released, thereby improving the replacement and maintenance efficiency.

[0038] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A printing press plate cylinder structure, characterized in that: The invention comprises a cylindrical wall (13), a cylindrical base (1) arranged in the cylindrical wall (13), a bidirectional threaded rod (4) rotatably arranged in the cylindrical base (1), a moving block (6) respectively screwed to two threaded sections of the bidirectional threaded rod (4), a hinge seat (7) arranged on the moving block (6) at intervals along the circumferential direction, a plurality of abutment plates (10) arranged between the cylindrical base (1) and the cylindrical wall (13), a hinged fitting seat (9) arranged at both ends of the inner side of the abutment plate (10), and a connecting rod (8) hingedly connected between the hinged fitting seat (9) and the adjacent hinge seat (7), so that When the bidirectional threaded rod (4) rotates in the forward direction, the moving block (6) moves relatively outward, so as to push the abutting plate (10) outward through the connecting rod (8) to abut against the inner side of the cylinder wall (13).

2. The printing press plate cylinder structure according to claim 1, characterized in that: A leakage groove (2) is provided on the cylindrical base (1) along its circumference, and the connecting rod (8) passes through the leakage groove (2) and is hinged to the abutment plate (10).

3. The printing press plate cylinder structure according to claim 1, characterized in that: A turning handle (5) is fixedly provided at one end of the bidirectional threaded rod (4).

4. The printing press plate cylinder structure according to claim 1, characterized in that: A bearing (3) is provided in the cylindrical base (1), and the bidirectional threaded rod (4) is rotatably connected to the cylindrical base (1) via the bearing (3).

5. The printing press plate cylinder structure according to claim 1, characterized in that: The length of the bidirectional threaded rod (4) is greater than the length of the cylindrical base (1) and the cylindrical wall (13).

6. The printing press plate cylinder structure according to claim 1, characterized in that: A pad (11) is provided on the outer surface of the abutment plate (10).

7. The printing press plate cylinder structure according to claim 6, characterized in that: The abutment plate (10) and the backing plate (11) are connected via a magnetic patch or pressure-sensitive adhesive.

8. The printing press plate cylinder structure according to claim 6, characterized in that: The thickness of the pad (11) is 1-2 mm.

9. The printing press plate cylinder structure according to claim 6, characterized in that: The pad (11) is a rubber pad.

10. The printing press plate cylinder structure according to claim 6, characterized in that: The pad (11) is provided with a ridge (12).

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