Anilox roller transmission mechanism of flexo printing machine

Abstract

The utility model provides a flexographic printing machine anilox roller transmission mechanism which is characterized by comprising a working frame, a double-shaft motor is installed at the bottom of the working frame, the output ends of the left side and the right side of the double-shaft motor are respectively connected with a second rotating rod, each second rotating rod is connected with a driving gear, and the driving gear is connected with the working frame. Each driving gear is connected with a transmission module; by arranging the transmission unit, under the driving of the double-shaft motor, all the components can finally drive the traction plate to move up and down on the threaded rod, then the moving plate and the anilox roller are driven to move up and down, the distance of the anilox roller in the vertical direction is adjusted, and then the transverse distance of the anilox roller is adjusted through driving of the telescopic air cylinder. The linkage of all the parts generally realizes the vertical and transverse adjustment of the anilox roller.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a drive mechanism for anilox rollers in a flexographic printing press. Background Technology

[0002] In flexographic printing equipment, the anilox roller is known as the "heart" of the flexographic printing press, which shows its importance. The function of the anilox roller is to transfer ink, thereby transferring the text and pattern on the printing plate to the substrate.

[0003] The pressure between the anilox roller and the printing plate roller determines whether the ink on the anilox roller can be evenly transferred to the printing plate. Excessive pressure results in severely enlarged dots in the printed product, reduced plate durability, and a tendency for ink buildup and smudges. Conversely, insufficient pressure hinders ink transfer, preventing ink from adhering to the plate and rendering printing impossible.

[0004] Patent CN220198867U discloses a servo drive mechanism for an anilox roller in a flexographic printing press. The mechanism includes an anilox roller with shafts at both ends passing through a main support and a driven support. Both the main and driven supports are installed in adjustment holes in a wall panel. The shaft at the driving end of the anilox roller is connected to a servo motor via a coupling, and the shaft at the driven end is connected to the head of a hydraulic cylinder via a connector. Slider blocks, arranged vertically, are fixedly connected to the inner sides of both the main and driven supports, and these sliders are slidably connected to linear guide rails. The bottom ends of both the main and driven supports are connected to adjusting screws via nuts, and the two adjusting screws are connected to a transmission shaft via a bevel gear set. This invention directly controls the anilox roller with a servo motor, reducing printing errors; it facilitates adjustment of the pressure between the anilox roller and the printing plate roller; and the axes of the anilox roller and the printing plate roller remain parallel, ensuring consistent printing pressure at both ends of the anilox roller.

[0005] However, this patented technology still has the following problems: the device can only adjust the lateral distance of the anilox roller, and the vertical distance between the anilox roller and the printing roller will also deviate to a certain extent during the long printing process, resulting in inconsistent printing pressure and thus reduced printing quality. Therefore, the vertical distance of the anilox roller should also be adjusted. Utility Model Content

[0006] In view of the above technical problems, this utility model provides a flexographic printing press anilox roller transmission mechanism that facilitates adjustment of the horizontal and vertical distances.

[0007] This utility model provides a transmission mechanism for anilox rollers in a flexographic printing machine, including a work frame. The mechanism is characterized in that a dual-axis motor is installed at the bottom of the work frame, and the output ends on the left and right sides of the dual-axis motor are respectively connected to second rotating rods. Each second rotating rod is connected to a drive gear, and each drive gear is connected to a transmission module.

[0008] The transmission module includes a protective cover, a driven gear, a threaded rod, and a guide rod. The driven gear meshes with the driving gear. The threaded rod is fixedly connected to the top of the driven gear. The threaded rod has a thread in its middle section and a traction plate is threadedly connected to the middle section of the threaded rod. The lower part of the threaded rod is connected to a base plate via a bearing. The top of the threaded rod is fixedly connected to a top plate. The top surfaces of the guide rods are connected to the left and right sides of the top plate, respectively. The bottom surface of the guide rods is fixedly connected to the base plate. The protective cover is fixedly connected to the lower part of the base plate. The driving gear and the driven gear are disposed inside the protective cover.

[0009] The second rotating rod passes through one end face of the protective cover and is rotatably connected to the protective cover via a bearing, so that the driving gear is placed inside the protective cover.

[0010] The outer walls of the left and right sides of the work frame are in contact with movable plates. A drive motor is fixedly connected to the upper part of the movable plate on one side of the work frame. The output end of the drive motor is connected to one side of the first rotating rod. The middle part of the first rotating rod is connected to the anilox roller. The other side of the first rotating rod is rotatably connected to another movable plate through a bearing. A traction plate is fixedly connected to the outer wall of each movable plate.

[0011] The outer walls on the left and right sides of the work frame are respectively provided with sliding grooves B, and the lower left and right side walls of the work frame are respectively provided with through holes. The upper top wall and lower bottom wall of each through hole are respectively provided with sliding grooves A. The left and right side walls of the rear side of the work frame are respectively fixedly connected to fixed plates, and each fixed plate is fixedly connected to a telescopic cylinder.

[0012] A connecting plate is fixedly connected to the side of the base plate, and the connecting plate can slide within the slide groove B.

[0013] The present invention relates to a transmission mechanism for anilox rollers in a flexographic printing machine, characterized in that it further includes bearing seats, wherein there are two bearing seats, each bearing seat is slidably connected in a groove A at the lower part of the work frame, and a bearing is connected inside each bearing seat, wherein a second rotating rod is connected in the middle of the bearing.

[0014] The beneficial effects of this utility model are as follows: This utility model is a transmission mechanism for anilox rollers in a flexographic printing machine. By setting up a transmission unit, under the drive of a dual-axis motor, each component can ultimately drive the traction plate to move up and down on the threaded rod, thereby driving the moving plate and the anilox roller to move up and down, realizing the adjustment of the vertical distance of the anilox roller. Then, through the drive of the telescopic cylinder, the adjustment of the horizontal distance of the anilox roller is realized. The overall linkage of each component realizes the vertical and horizontal adjustment of the anilox roller, making the pressure between the anilox roller and the printing plate roller appropriate and improving the printing quality. Attached Figure Description

[0015] Figure 1This is a front view structural diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure from one side of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure from another side of the present invention;

[0018] Figure 4 This is a top view of the structure of this utility model;

[0019] Figure 5 This is a partial structural diagram of the present invention.

[0020] Reference numerals: 1-Work frame; 2-Moving plate; 3-Anilox roller; 4-Drive motor; 5-First rotating rod; 6-Fixed plate; 7-Telescopic cylinder; 81-Top plate; 82-Guide rod; 83-Threaded rod; 84-Base plate; 85-Protective cover; 86-Driving gear; 87-Driven gear; 88-Bearing; 89-Dual-axis motor; 891-Second rotating rod; 90-Bearing seat; 91-Connecting plate; 92-Traction plate; 11-Slide groove A; 12-Slide groove B. Detailed Implementation

[0021] Example 1

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0023] like Figure 1 As shown, this utility model provides a transmission mechanism for anilox rollers in a flexographic printing machine. It is characterized by including a work frame 1, with a dual-axis motor 89 installed at the bottom of the work frame 1. The output ends of the dual-axis motor 89 on the left and right sides are respectively connected to second rotating rods 891. Each second rotating rod 891 is connected to a drive gear 86, and each drive gear 86 is connected to a transmission module.

[0024] The transmission module includes a protective cover 85, a driven gear 87, a threaded rod 83, and a guide rod 82. The driven gear 87 meshes with the driving gear 86. The threaded rod 83 is fixedly connected to the top of the driven gear 87. The threaded rod 83 has a thread in the middle. The threaded rod 83 is threadedly connected to the traction plate 92 in the middle. The lower part of the threaded rod 83 is connected to the base plate 84 through the bearing 88. The top of the threaded rod 83 is fixedly connected to the top plate 81. The top surfaces of the guide rod 82 are connected to the left and right sides of the top plate 81, respectively. The bottom surface of the guide rod 82 is fixedly connected to the base plate 84. The protective cover 85 is fixedly connected to the lower part of the base plate 84. The driving gear 86 and the driven gear 87 are located inside the protective cover 85.

[0025] The second rotating rod 891 passes through one end face of the protective cover 85 and is rotatably connected to the protective cover 85 through the bearing 88, so that the driving gear 86 is placed inside the protective cover 85.

[0026] The outer walls of the left and right sides of the work frame 1 are in contact with the movable plate 2. The upper part of the movable plate 2 located on one side of the work frame 1 is fixedly connected to the drive motor 4. The output end of the drive motor 4 is connected to one side of the first rotating rod 5. The middle part of the first rotating rod 5 is connected to the anilox roller 3. The other side of the first rotating rod 5 is rotatably connected to another movable plate 2 through the bearing 88. The outer wall of each movable plate 2 is fixedly connected to the traction plate 92.

[0027] The outer walls on the left and right sides of the work frame 1 are respectively provided with sliding grooves B12. The lower left and right side walls of the work frame 1 are respectively provided with through holes. The upper top wall and lower bottom wall of each through hole are respectively provided with sliding grooves A11. The left and right side walls of the rear side of the work frame 1 are respectively fixedly connected with fixing plates 6. Each fixing plate 6 is fixedly connected with a telescopic cylinder 7.

[0028] A connecting plate 91 is fixedly connected to the side of the base plate 84, and the connecting plate 91 can slide within the slide groove B12.

[0029] The present invention relates to a transmission mechanism for anilox rollers in a flexographic printing machine, characterized in that it further includes bearing seats 90, there are two bearing seats 90, each bearing seat 90 is slidably connected in a groove A11 at the lower part of the work frame 1, and each bearing seat 90 is connected to a bearing 88, the middle of which is connected to a second rotating rod 891.

[0030] Example 2

[0031] When using this invention: start the drive motor 4 to drive the first rotating rod 5 to rotate, which in turn drives the anilox roller 3 to rotate. The paper is placed under the anilox roller 3 and above the printing roller to achieve printing on the paper. When working for a long time, the pressure between the anilox roller 3 and the printing roller changes, reducing the printing quality. At this time, it can be adjusted through the transmission module to improve the printing quality.

[0032] The specific adjustment operation is as follows: drive the dual-axis motor 89, which drives the second rotating rod 891 to rotate. The rotation of the second rotating rod 891 drives the drive gear 86 to rotate, which in turn drives the driven gear 87 to rotate, thereby driving the screw 83 to rotate. The rotation of the screw 83 can realize the up or down movement of the traction plate 92 on the threaded part of the screw 83, because of the limiting and guiding effect of the guide rod 82. The traction plate 92 is fixedly connected to the moving plate 2, and the moving plate 2 is in contact with the work frame 1. It can realize the up or down movement of the moving plate 2 under the drive of the traction plate 92, thereby realizing the adjustment of the vertical distance of the anilox roller 3. After the vertical adjustment is completed;

[0033] When the telescopic cylinder 7 is activated, the two telescopic cylinders 7 move synchronously, causing the protective cover 85 to move laterally, which in turn causes the connecting plate 91 to slide within the slide groove B12, which in turn causes the traction plate 92 to move laterally, which in turn causes the moving plate 2 and the anilox roller 3 to move laterally, thereby adjusting the lateral distance of the anilox roller 3. The dual-axis motor is slidably mounted at the bottom of the work frame, so when the telescopic cylinder is pulled, the dual-axis motor moves synchronously along with it.

[0034] It is worth noting that the opening and closing of the two telescopic cylinders 7 are synchronized, so that they can adjust the lateral distance of the anilox roller 3 synchronously. In addition, when the synchronous opening and closing is met, since the vertical and lateral distance adjustments of the anilox roller 3 are fine-tuned, the distance difference between the anilox roller 3 and the printing roller will not be too large. When the pressure is unstable, it can be detected and adjusted in time by observing the ink situation of the printed paper. Therefore, when the distance difference is not large, the slight opening and closing time difference of the telescopic cylinders 7 will not have a significant impact on the lateral distance adjustment of the anilox roller 3 and can be ignored, thus ensuring that the printing pressure at both ends of the anilox roller is consistent.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A drive mechanism for anilox rollers in a flexographic printing press, comprising a work frame, characterized in that... A dual-axis motor is slidably mounted on the bottom of the work frame. The output ends of the dual-axis motor on the left and right sides are respectively connected to second rotating rods. Each second rotating rod is connected to a drive gear, and each drive gear is connected to a transmission module. The transmission module includes a protective cover, a driven gear, a threaded rod, and a guide rod. The driven gear meshes with the drive gear. The threaded rod is fixedly connected to the top of the driven gear. The threaded rod has a thread in the middle and a traction plate is threadedly connected to the middle of the threaded rod. The lower part of the threaded rod is connected to the base plate through a bearing. The top of the threaded rod is fixedly connected to the top plate. The top surfaces of the guide rods are respectively connected to the left and right sides of the top plate. The bottom surfaces of the guide rods are fixedly connected to the base plate. The protective cover is fixedly connected to the lower part of the base plate. The drive gear and the driven gear are located inside the protective cover.

2. The anilox roller drive mechanism for a flexographic printing press according to claim 1, characterized in that... The second rotating rod passes through one end face of the protective cover and is rotatably connected to the protective cover via a bearing, so that the driving gear is placed inside the protective cover.

3. The anilox roller drive mechanism for a flexographic printing press according to claim 2, characterized in that... The outer walls of the left and right sides of the work frame are in contact with movable plates. A drive motor is fixedly connected to the upper part of the movable plate on one side of the work frame. The output end of the drive motor is connected to one side of the first rotating rod. The middle part of the first rotating rod is connected to the anilox roller. The other side of the first rotating rod is rotatably connected to another movable plate through a bearing. A traction plate is fixedly connected to the outer wall of each movable plate.

4. The anilox roller drive mechanism for a flexographic printing press according to claim 3, characterized in that... The outer walls on the left and right sides of the work frame are respectively provided with sliding grooves B, and the lower left and right side walls of the work frame are respectively provided with through holes. The upper top wall and lower bottom wall of each through hole are respectively provided with sliding grooves A. The left and right side walls of the rear side of the work frame are respectively fixedly connected to fixed plates, and each fixed plate is fixedly connected to a telescopic cylinder.

5. The anilox roller drive mechanism for a flexographic printing press according to claim 4, characterized in that... A connecting plate is fixedly connected to the side of the base plate, and the connecting plate can slide within the slide groove B.

6. The anilox roller drive mechanism for a flexographic printing press according to claim 5, characterized in that... It also includes bearing housings, of which there are two. Each bearing housing is slidably connected in a groove A at the bottom of the work frame. Each bearing housing is connected to a bearing, and the middle of the bearing is connected to a second rotating rod.

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