Automatic dismounting mechanism of a flexible printing press screen roller

Abstract

The utility model discloses a kind of automatic dismounting mechanism of flexible printing machine screen roller, including front wallboard and rear wallboard, inflatable mandrel is installed between front wallboard and rear wallboard, screen roller is sleeved on the inflatable mandrel, and multiple air holes are equipped on the surface of inflatable mandrel and screen roller cooperation;Air cylinder is installed on front wallboard, and pusher is installed on the piston rod of air cylinder, and the height of pusher is flush with screen roller.The utility model can be fixed and disassembled to screen roller more conveniently, without manual intervention when screen roller is disassembled, realizes automatic disassembly, and compatible to screen roller of different sizes is disassembled.

Description

Technical Field

[0001] This utility model relates to an automatic disassembly and assembly mechanism for screen rollers in flexographic printing presses, belonging to the technical field of automatic disassembly and assembly of screen rollers in printing presses. Background Technology

[0002] A printing press is a machine for printing text and images. A modern printing press generally consists of mechanisms for mounting the printing plate, inking, printing, and paper feeding (including folding). Its working principle is as follows: First, the text and images to be printed are made into a printing plate, which is then mounted on the printing press. Then, ink is applied to the areas of the printing plate containing the text and images, either manually or by the printing press itself. The ink is then directly or indirectly transferred to paper or other printing substrates (such as textiles, metal plates, plastics, leather, wood, glass, and ceramics), thereby reproducing printed materials identical to the printing plate. The invention and development of the printing press has played an important role in the dissemination of human civilization and culture.

[0003] The core components of a printing press include the screen roller, the printing plate roller, and the printing substrate roller. The printing components are the core of a flexographic printing press, and the screen roller is an important part of the printing unit of a flexographic printing press. Its installation and adjustment directly affect the printing effect and efficiency. The disassembly of the screen roller in existing flexographic printing presses requires manual operation. The weight of the screen roller increases with the increase in width, which is inconvenient for workers to operate and requires a large installation space.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides an automatic assembly and disassembly mechanism for screen rollers in flexographic printing presses. This mechanism enables convenient fixing and disassembly of screen rollers without manual intervention, achieving automated disassembly and compatibility with screen rollers of different sizes.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] An automatic disassembly and assembly mechanism for a flexographic printing press screen roller includes a front wall plate and a rear wall plate. An inflatable mandrel is installed between the front wall plate and the rear wall plate. A screen roller is fitted on the inflatable mandrel. Multiple air outlets are provided on the surface of the inflatable mandrel that mates with the screen roller.

[0008] A cylinder is installed on the front wall panel, and a pusher is installed on the piston rod of the cylinder. The pusher is flush with the height of the screen roller.

[0009] Furthermore, the pushing member is a push plate, and the upper surface of the push plate is provided with a downwardly recessed groove, the radius of which is adapted to the radius of the screen roller.

[0010] Furthermore, the front wall panel is provided with a clearance hole, and a guide sleeve is fitted inside the clearance hole. The piston rod of the cylinder is inserted into the guide sleeve, and an extension rod is installed on the piston rod of the cylinder. The extension rod is connected to the push plate.

[0011] Furthermore, a connecting plate is vertically mounted on the outer end of the extension rod, and the push plate is fixed to the connecting plate by screws.

[0012] Furthermore, the inflatable mandrel is provided with an inflation nozzle and an deflation nozzle at one end near the front wall panel, and the surface of the inflatable mandrel that matches the mesh roller is provided with multiple air outlet holes.

[0013] Furthermore, a fixing frame is fixed on the inner side of the front wall panel and the rear wall panel respectively, and an ink baffle is fixed on the fixing frame. The ink baffle is fixed to the fixing frame by a fixing pin.

[0014] Furthermore, the pushing component is a pushing frame, which includes a horizontal plate. The front end and rear end of the horizontal plate are vertically bent upward and downward respectively to form a front pushing plate and a rear fixing plate. The front pushing plate is provided with a semi-circular groove, the radius of which is adapted to the radius of the screen roller.

[0015] Furthermore, an extension rod is installed on the piston rod of the cylinder, and the rear fixing plate of the push frame is connected to the extension rod.

[0016] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0017] The push plate in Example 1 is relatively small, and the recessed groove is also relatively small. For screen rollers with small radii, the push plate in Example 1 can be used for disassembly; for screen rollers with large radii, the push frame in Example 2 can be used for disassembly. The screen roller is fixed by an inflatable mandrel, which is convenient for installation and disassembly. When disassembling the screen roller by the push plate or push frame, no manual intervention is required, realizing automated disassembly.

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0021] Figure 3 This is a schematic diagram of the push plate structure in Embodiment 1;

[0022] Figure 4 This is a schematic diagram of the pusher frame in Embodiment 2.

[0023] In the picture,

[0024] 1-Inflatable spindle, 101-Air outlet, 2-Inflating nozzle, 3-Deflating nozzle, 4-Wire mesh roller, 5-Cylinder, 6-Extending rod, 7-Guide sleeve, 8-Push plate, 9-Connecting plate, 10-Front wall plate, 11-Rear wall plate, 12-Push frame, 121-Front push plate, 122-Rear fixing plate, 13-Fixing frame, 14-Ink baffle plate, 15-Fixing pin. Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0026] Example 1

[0027] like Figure 1 As shown, this utility model provides an automatic disassembly and assembly mechanism for a flexographic printing press screen roller, including a front wall plate 10 and a rear wall plate 11. An inflatable mandrel 1 is installed between the front wall plate 10 and the rear wall plate 11. A screen roller 4 is mounted on the inflatable mandrel 1. A plurality of air outlet holes 101 are provided on the surface of the inflatable mandrel 1 that mates with the screen roller 4.

[0028] A cylinder 5 is installed on the front wall panel 10, and a pusher is installed on the piston rod of the cylinder 5. The pusher is flush with the height of the screen roller 4.

[0029] The pushing component is a push plate 8, and the upper surface of the push plate 8 is provided with a downwardly recessed groove, such as... Figure 3 The radius of the recessed groove is adapted to the radius of the screen roller 4.

[0030] When it is necessary to disassemble the screen roller 4, the transmission mechanism configured on the printing press drives the rear wall plate 11 away from the inflatable spindle 1, and the cylinder 5 pushes the push plate 8 to push the screen roller 4 off the inflatable spindle 1.

[0031] The front wall panel 10 is provided with a clearance hole, and a guide sleeve 7 is fitted inside the clearance hole. The piston rod of the cylinder 5 is inserted into the guide sleeve 7. An extension rod 6 is installed on the piston rod of the cylinder 5, and the extension rod 6 is connected to the push plate 8.

[0032] A connecting plate 9 is vertically mounted on the outer end of the extension rod 6, and the push plate 8 is fixed to the connecting plate 9 with screws. Connecting plates 9 of different sizes are configured according to the height difference between the axis of the cylinder 5 and the screen roller 4, allowing the push plate 8 to be installed and removed from screen rollers 4 mounted on inflatable mandrels 1 of different diameters, thus improving applicability.

[0033] The inflatable mandrel 1 is provided with an inflation nozzle 2 and an air release nozzle 3 at one end near the front wall plate 10. The surface of the inflatable mandrel 1 that matches the screen roller 4 is provided with multiple air outlets 101. During installation, the screen roller 4 is fitted onto the surface of the inflatable mandrel 1. Then, compressed air is injected through the inflation nozzle 2 and discharged from the air outlets 101 of the inflatable mandrel 1, causing the screen roller 4 to expand outward and fix the screen roller 4 onto the inflatable mandrel 1. When removing the screen roller 4, the compressed air is discharged from the air release nozzle 3. Then, the transmission mechanism configured on the printing press drives the rear wall plate 11 away from the inflatable mandrel 1, and the cylinder 5 pushes the push plate 8 to push the screen roller 4 off the inflatable mandrel 1.

[0034] A fixing frame 13 is fixed to the inner side of the front wall panel 10 and the rear wall panel 11 respectively. An ink-blocking plate 14 is fixed on the fixing frame 13 and the ink-blocking plate 14 is fixed to the fixing frame 13 by a fixing pin 15. The ink-blocking plate 14 serves to position the screen roller 4 and also blocks the ink strip.

[0035] Example 2

[0036] The structure of Embodiment 2 is basically similar to that of Embodiment 1, and the similarities will not be repeated here. The differences are as follows:

[0037] like Figure 2 The pushing component is the pushing frame 12, such as... Figure 4 As shown, the pusher frame 12 includes a horizontal plate. The front end and rear end of the horizontal plate are vertically bent upward and downward respectively to form a front push plate 121 and a rear fixing plate 122. The front push plate 121 is provided with a semi-circular groove, the radius of which is adapted to the radius of the mesh roller 4.

[0038] An extension rod 6 is mounted on the piston rod of cylinder 5, and the rear fixing plate 122 of the push frame 12 is connected to the extension rod 6.

[0039] In Embodiment 1, the push plate 8 is relatively small, and the recessed groove is also relatively small. For the screen roller 4 with a small radius, the push plate 8 in Embodiment 1 can be used for disassembly; for the screen roller 4 with a large radius, the push frame 12 in Embodiment 2 can be used for disassembly. The screen roller 4 is fixed by the inflatable mandrel 1, which is convenient for installation and disassembly. When disassembling the screen roller 4 by the push plate 8 or the push frame 12, no manual intervention is required, realizing automated disassembly.

[0040] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. An automatic assembly and disassembly mechanism for screen rollers in a flexographic printing press, characterized in that: It includes a front wall panel (10) and a rear wall panel (11), an inflatable mandrel (1) is installed between the front wall panel (10) and the rear wall panel (11), a mesh roller (4) is fitted on the inflatable mandrel (1), and a plurality of air outlet holes (101) are provided on the surface of the inflatable mandrel (1) that cooperates with the mesh roller (4); A cylinder (5) is installed on the front wall panel (10), and a pusher is installed on the piston rod of the cylinder (5), the pusher being flush with the height of the screen roller (4).

2. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 1, characterized in that: The pushing member is a push plate (8), and the upper surface of the push plate (8) is provided with a downward recessed groove, the radius of which is adapted to the radius of the screen roller (4).

3. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 1, characterized in that: The front wall panel (10) is provided with a clearance hole, and a guide sleeve (7) is fitted inside the clearance hole. The piston rod of the cylinder (5) is inserted into the guide sleeve (7). An extension rod (6) is installed on the piston rod of the cylinder (5), and the extension rod (6) is connected to the push plate (8).

4. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 3, characterized in that: The extension rod (6) is vertically mounted with a connecting plate (9) at its outer end, and the push plate (8) is fixed to the connecting plate (9) by screws.

5. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 1, characterized in that: The inflatable mandrel (1) is provided with an inflation nozzle (2) and an air release nozzle (3) at one end near the front wall plate (10), and the surface of the inflatable mandrel (1) that matches the mesh roller (4) is provided with multiple air outlet holes (101).

6. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 1, characterized in that: A fixing frame (13) is fixed on the inner side of the front wall panel (10) and the rear wall panel (11), respectively. An ink baffle plate (14) is fixed on the fixing frame (13), and the ink baffle plate (14) is fixed on the fixing frame (13) by a fixing pin (15).

7. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 1, characterized in that: The pushing component is a pushing frame (12), which includes a horizontal plate. The front end and rear end of the horizontal plate are vertically bent upward and downward to form a front pushing plate (121) and a rear fixing plate (122), respectively. The front pushing plate (121) is provided with a semi-circular groove, the radius of which is adapted to the radius of the screen roller (4).

8. The automatic assembly and disassembly mechanism for the screen roller of a flexographic printing machine as described in claim 7, characterized in that: An extension rod (6) is installed on the piston rod of the cylinder (5), and the rear fixing plate (122) of the push frame (12) is connected to the extension rod (6).

Images