Novel pressure roller structure of flexographic printing machine capable of improving printing efficiency

Abstract

The novel pressing roller structure of the flexible plate printing machine comprises a machine frame and a shaft center, the two sides of the inner wall of the machine frame are both rotationally connected with connecting shafts through bearings, one ends of the two connecting shafts are both fixedly connected with installing bases, and the two installing bases are connected to the two ends of the shaft center respectively. A roller body fixedly sleeves the middle of the axis, an air cylinder is fixedly mounted on one side of the inner wall of the mounting base, a displacement plate is fixedly connected to one end of the air cylinder, four limiting rods are fixedly connected to the side, away from the air cylinder, of the displacement plate, and four limiting grooves are formed in the two ends of the axis correspondingly. According to the novel pressing roller structure of the flexographic printing machine capable of improving the printing efficiency, the pressing roller on the flexographic printing machine is high in disassembly and assembly efficiency and rapid to replace after being damaged, the printing process is prevented from being delayed, dust, paper scraps and other pollutants attached to the surface of the roller body can be cleaned, and the situation that printing materials are polluted and the printing quality is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pressure roller structure technology, specifically a novel pressure roller structure for flexographic printing presses that improves printing efficiency. Background Technology

[0002] Flexographic printing presses are a common type of printing equipment that uses flexible printing plates for printing.

[0003] Flexographic printing presses use highly fluid inks. The ink is transferred to the image areas of the printing plate by the ink fountain roller and anilox roller, and then the pressure cylinder applies printing pressure to transfer the ink from the printing plate to the substrate. Finally, the printing process is completed by the drying process. However, the existing pressure cylinder structure of flexographic printing presses has the following disadvantages:

[0004] (1) The pressure rollers on the existing flexographic printing press are inconvenient to disassemble and assemble, and cannot be replaced quickly after being damaged, which delays the printing process.

[0005] (2) The surface of the pressure roller of the existing flexographic printing press is prone to contaminants such as dust and paper scraps. If these contaminants are not removed in time, they may be transferred to the printing material and affect the printing quality. Utility Model Content

[0006] The purpose of this utility model is to provide a new pressure roller structure for flexographic printing presses that improves printing efficiency, in order to solve the problems mentioned in the background art, such as the inconvenience of disassembling and assembling the pressure rollers of existing flexographic printing presses, the inability to quickly replace them after damage, which delays the printing process, and the fact that dust, paper scraps and other contaminants easily adhere to the surface of the pressure rollers of flexographic printing presses. If these contaminants are not removed in time, they may be transferred to the printing materials, affecting the printing quality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a novel pressure roller structure for a flexographic printing machine that improves printing efficiency, comprising a frame and a shaft. Two connecting shafts are rotatably connected to both sides of the inner wall of the frame via bearings. One end of each connecting shaft is fixedly connected to a mounting seat, and the two mounting seats are respectively connected to both ends of the shaft. A roller body is fixedly sleeved in the middle of the shaft. A cylinder is fixedly installed on one side of the inner wall of the mounting seat. A displacement plate is fixedly connected to one end of the cylinder. Four limiting rods are fixedly connected to the side of the displacement plate opposite to the cylinder. Four limiting grooves are provided at both ends of the shaft. A motor is fixedly installed at the bottom of the frame, and a cleaning mechanism is installed at the top of the frame.

[0008] When using the novel pressure roller structure of the flexographic printing press that improves printing efficiency using this technical solution, the pressure roller on the flexographic printing press has high disassembly and assembly efficiency, and can be quickly replaced after damage to avoid delaying the printing process. It can also clean dust, paper scraps and other contaminants attached to the surface of the roller body to avoid contaminating the printing materials and affecting the printing quality.

[0009] In a preferred embodiment of this invention, the cleaning mechanism includes two hydraulic cylinders, a connecting seat, a brush roller, and a second motor. The two hydraulic cylinders are respectively fixedly mounted on both sides of the top of the frame. The bottom ends of the two hydraulic cylinders pass through the frame and are fixedly connected to the connecting seat. The brush roller is rotatably connected to the inner wall of the connecting seat. The second motor is fixedly mounted at one end of the connecting seat, and the output end of the second motor is fixedly connected to one end of the brush roller. By driving the brush roller to rotate and move downwards, contaminants on the surface of the roller body can be brushed off.

[0010] In a preferred embodiment of this invention, the mounting base has four through holes on the side near the shaft center, and one end of the limiting rod passes through the through holes and is inserted into the inner wall of the limiting groove. The limiting rods on both sides are inserted into the limiting groove to lock the position of the shaft center.

[0011] In a preferred embodiment of this invention, the inner wall of the mounting base is provided with sliding grooves on both sides, and sliders are slidably connected to the inner walls of both sliding grooves. The two sliders are respectively fixedly connected to both ends of the displacement plate. The sliders and sliding grooves guide and limit the movement of the displacement plate.

[0012] In a preferred embodiment of this invention, the output end of the first motor is fixedly connected to the connecting shaft. The first motor drives the connecting shaft and the roller body to rotate.

[0013] In a preferred embodiment of this invention, a support plate is fixedly connected to the bottom of the mounting base. The support plate provides support during axial installation.

[0014] As a preferred embodiment of this invention, the surface of the roller body is coated with a rubber coating. The rubber coating provides the elasticity and flexibility required during printing, facilitating uniform ink transfer.

[0015] In a preferred embodiment of this invention, the surface of the rubber coating is coated with a hard chrome coating. The hard chrome coating improves the wear resistance of the pressure roller surface.

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

[0017] 1. By activating the cylinders in the mounting seats on both sides, the displacement plate is moved, causing the limit rods on both sides to disengage from the limit grooves, thereby releasing the lock and allowing the shaft and roller body to be removed. When installing a new pressure roller, the cylinder is activated again and the limit rods are pushed to engage with the limit grooves at the ends of the shaft, thus completing the fixation. As a result, the pressure rollers on this flexographic printing machine have high disassembly and assembly efficiency, and can be quickly replaced after damage, avoiding delays in the printing process.

[0018] 2. A cleaning mechanism is installed above the pressure roller. The motor can be started to drive the brush roller to rotate, and then two hydraulic cylinders can drive the brush roller to move down, which can wipe the surface of the roller body to remove the attached dust, paper scraps and other contaminants, so as to avoid contaminating the printing materials and affecting the printing quality. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a plan view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the mounting base of this utility model;

[0022] Figure 4 This is a partial cross-sectional view of the roller of this utility model.

[0023] In the diagram: 1. Frame; 2. Bearing; 3. Connecting shaft; 4. Mounting seat; 5. Shaft; 6. Roller body; 7. Support plate; 8. Cylinder; 9. Slider; 10. Slide groove; 11. Displacement plate; 12. Limiting rod; 13. Through-hole; 14. Rubber coating; 15. Limiting groove; 16. Motor 1; 17. Cleaning mechanism; 171. Hydraulic cylinder; 172. Connecting seat; 173. Brush roller; 174. Motor 2; 18. Hard chrome coating. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4This utility model provides a novel pressure roller structure for a flexographic printing machine that improves printing efficiency. It includes a frame 1 and a shaft 5. Connecting shafts 3 are rotatably connected to both sides of the inner wall of the frame 1 via bearings 2. Mounting seats 4 are fixedly connected to one end of each connecting shaft 3, and the two mounting seats 4 are respectively connected to both ends of the shaft 5. A roller body 6 is fixedly sleeved in the middle of the shaft 5 for applying printing pressure. A cylinder 8 is fixedly installed on one side of the inner wall of the mounting seat 4. A displacement plate 11 is fixedly connected to one end of the cylinder 8. Four limiting rods 12 are fixedly connected to the side of the displacement plate 11 facing away from the cylinder 8. Four limiting grooves 15 are provided at both ends of the shaft 5 for mounting purposes. A motor 16 is fixedly installed at the bottom of the frame 1, and a cleaning mechanism 17 is installed at the top of the frame 1 for cleaning contaminants on the pressure roller.

[0026] During use, the pressure roller is rotated by motor 16 to apply printing pressure and transfer the ink on the printing plate to the substrate. The pressure roller on this flexographic printing press has high disassembly and assembly efficiency and can be quickly replaced after damage to avoid delaying the printing process. By setting a cleaning mechanism 17 above the pressure roller, dust, paper scraps and other contaminants attached to the surface of the roller body 6 can be cleaned to avoid contaminating the printing materials and affecting the printing quality.

[0027] The cleaning mechanism 17 includes two hydraulic cylinders 171, a connecting seat 172, a brush roller 173, and a second motor 174. The two hydraulic cylinders 171 are fixedly installed on both sides of the top of the frame 1. The bottom ends of the two hydraulic cylinders 171 pass through the frame 1 and are fixedly connected to the connecting seat 172. The inner wall of the connecting seat 172 is rotatably connected to the brush roller 173, which plays a cleaning role. The second motor 174 is fixedly installed at one end of the connecting seat 172, and the output end of the second motor 174 is fixedly connected to one end of the brush roller 173. The output end of the first motor 16 is fixedly connected to the connecting shaft 3 for transmission.

[0028] In use, a cleaning mechanism 17 is provided above the pressure roller. The motor 174 can be started to drive the brush roller 173 to rotate. Then, two hydraulic cylinders 171 drive the brush roller 173 to move down. At the same time, the motor 16 drives the roller body 6 to rotate. The roller body 6 and the brush roller 173 rotate in opposite directions, so that the brush roller 173 can wipe the surface of the roller body 6 to remove the attached dust, paper scraps and other pollutants.

[0029] The mounting base 4 has four through holes 13 on the side near the shaft 5, and one end of the limiting rod 12 passes through the through hole 13 and is inserted into the inner wall of the limiting groove 15 to provide passage space. Both sides of the inner wall of the mounting base 4 have sliding grooves 10, and the inner walls of the two sliding grooves 10 are slidably connected to sliders 9. The two sliders 9 are respectively fixedly connected to the two ends of the displacement plate 11 to play the role of limiting and guiding. The bottom of the mounting base 4 is fixedly connected to the support plate 7 to play a supporting role. The surface of the roller body 6 is coated with a rubber coating 14, and the surface of the rubber coating 14 is coated with a hard chrome coating 18 to provide a protective effect.

[0030] In use, the displacement plate 11 is moved by starting the cylinder 8, so that the limiting rod 12 at the frame 1 is disengaged or inserted into the limiting groove 15 at the end of the shaft 5, and the roller body 6 can be disassembled and assembled. The through hole 13 provides space for the movement of the limiting rod 12. The slider 9 and the slide groove 10 prevent the displacement plate 11 from skewing during movement. The support plate 7 supports the positioning shaft 5 during the installation of the pressure roller, which is convenient for operation. The rubber coating 14 provides the elasticity and softness required during printing, which helps to evenly transfer ink. The hard chrome coating 18 can improve the wear resistance of the pressure roller surface.

[0031] In practical use, this utility model, a novel pressure roller structure for a flexographic printing machine that improves printing efficiency, is driven by a motor 16 to rotate the pressure roller, applying printing pressure to transfer ink from the printing plate to the substrate. By activating the cylinders 8 in the mounting seats 4 on both sides, the displacement plates 11 are moved, causing the limiting rods 12 on both sides to disengage from the limiting grooves 15, thereby releasing the lock and allowing the shaft 5 and roller body 6 to be removed. When installing a new pressure roller, the cylinders 8 are activated again and the limiting rods 12 are pushed to engage with the limiting grooves 15 at the ends of the shaft 5, completing the fixation. Thus, the pressure roller on this flexographic printing machine has high disassembly and assembly efficiency, and replacement after damage is quick, avoiding delays in the printing process. A cleaning mechanism 17 is provided above the pressure roller. The motor 174 can be activated to rotate the brush roller 173, and then two hydraulic cylinders 171 can drive the brush roller 173 to move downward, which can wipe the surface of the roller body 6 to remove attached dust, paper scraps and other contaminants, avoiding contamination of printing materials and affecting printing quality.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel pressure roller structure for a flexographic printing press to improve printing efficiency, comprising a frame (1) and a shaft (5), characterized in that: The inner walls of the frame (1) are rotatably connected to the connecting shafts (3) via bearings (2). One end of each connecting shaft (3) is fixedly connected to a mounting base (4), and the two mounting bases (4) are respectively connected to the two ends of the shaft (5). A roller body (6) is fixedly sleeved in the middle of the shaft (5). A cylinder (8) is fixedly installed on one side of the inner wall of the mounting base (4). A displacement plate (11) is fixedly connected to one end of the cylinder (8). Four limit rods (12) are fixedly connected to the side of the displacement plate (11) away from the cylinder (8). Four limit grooves (15) are opened at both ends of the shaft (5). A motor (16) is fixedly installed at the bottom of the frame (1), and a cleaning mechanism (17) is installed at the top of the frame (1).

2. The novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 1, characterized in that: The cleaning mechanism (17) includes two hydraulic cylinders (171), a connecting seat (172), a brush roller (173), and a second motor (174). The two hydraulic cylinders (171) are respectively fixedly installed on both sides of the top of the frame (1). The bottom ends of the two hydraulic cylinders (171) pass through the frame (1) and are fixedly connected to the connecting seat (172). The inner wall of the connecting seat (172) is rotatably connected to the brush roller (173). One end of the connecting seat (172) is fixedly installed with the second motor (174), and the output end of the second motor (174) is fixedly connected to one end of the brush roller (173).

3. The novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 1, characterized in that: The mounting base (4) has four through holes (13) on the side near the axis (5), and one end of the limiting rod (12) passes through the through holes (13) and is inserted into the inner wall of the limiting groove (15).

4. The novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 1, characterized in that: The mounting base (4) has sliding grooves (10) on both sides of its inner wall. The inner walls of the two sliding grooves (10) are slidably connected to sliders (9), and the two sliders (9) are respectively fixedly connected to the two ends of the displacement plate (11).

5. The novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 1, characterized in that: The output end of the motor (16) is fixedly connected to the connecting shaft (3).

6. The novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 1, characterized in that: The bottom of the mounting base (4) is fixedly connected to a support plate (7).

7. The novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 1, characterized in that: The surface of the roller body (6) is coated with a rubber coating (14).

8. A novel pressure roller structure for a flexographic printing press to improve printing efficiency according to claim 7, characterized in that: The surface of the rubber coating (14) is coated with a hard chrome coating (18).

Images