Automatic alignment device of intaglio printing roller

Abstract

The utility model relates to the technical field of printing equipment, in particular to an automatic alignment device of an intaglio printing roller, which comprises a base plate, a first support frame and a second support frame are arranged on the base plate, a printing plate roller and a printing press roller are connected onto the first support frame, the printing press roller is positioned above the printing plate roller, and the printing press roller is connected onto the second support frame. The second supporting frame is provided with an alignment mechanism used for adjusting the printing pressing roller, the alignment mechanism comprises a connecting ring, the connecting ring is connected to a roller shaft of the printing pressing roller, a laser is arranged at one end of the printing pressing roller, a vertical plate is further arranged on the side, close to the laser, of the base plate, and a light sensing assembly is arranged on the vertical plate. Whether the position of the printing press roller is accurate or not can be monitored in real time; and if the position of the printing press roller deviates, the position of the printing press roller is adjusted by the alignment mechanism until the light sensing assembly receives the light signal emitted by the laser, and the position of the printing press roller is restored. The device has the functions of position detection and position adjustment at the same time, the stability of the device is improved, and the final quality of printed matter can be better guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field belongs to a kind of automatic alignment device of gravure printing roller. BACKGROUND

[0002] Gravure printing, simply called gravure, is one of the four printing methods. When the gravure printing machine is printing, the printing plate roller and the printing pressure roller are usually used to directly print the printed matter.

[0003] During the printing process, the printing pressure roller usually needs to apply a certain pressure, and at the same time needs to rotate with the printing plate roller to complete the printing. After a long time of work, the shaft head will be worn to a certain extent and the size will change, causing the shaft head and the external connecting parts to move up and down, so that the printing pressure roller forms eccentric motion when rotating, thereby affecting the printing accuracy and reducing the final quality of the printed product. SUMMARY

[0004] In view of the above technical problems, the utility model provides an automatic alignment device for gravure printing roller.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] The application provides an automatic alignment device for gravure printing roller, which comprises a base plate, a first support frame and a second support frame are arranged on the base plate, a printing plate roller and a printing pressure roller are connected to the first support frame, the printing pressure roller is located above the printing plate roller, an alignment mechanism for adjusting the printing pressure roller is arranged on the second support frame, the alignment mechanism comprises a connecting ring, the connecting ring is connected to the roller shaft of the printing pressure roller, a laser is arranged at one end of the printing pressure roller, a vertical plate is also arranged on one side of the base plate close to the laser, and a light sensing assembly is arranged on the vertical plate.

[0007] Preferably, travel holes are arranged on both sides of the connecting ring, guide columns are arranged in the travel holes, and the guide columns are connected to the bottom of the travel holes.

[0008] Preferably, the alignment mechanism further comprises two symmetrical transmission shafts and two movable adjusting cylinders, the transmission shafts are movably connected to the second support frame, a servo motor is connected to one end of the transmission shaft through a shaft coupling, the servo motor is connected to the second support frame, and the outer wall of the movable adjusting cylinder is movably connected to the travel hole.

[0009] Preferably, a stepped hole is arranged in the movable adjusting cylinder, the stepped hole comprises a flat wall hole and an internally threaded hole, the flat wall hole and the guide column are movably connected through a shaft hole, and a threaded section is arranged at the other end of the transmission shaft, and the threaded section is screw-connected to the internally threaded hole.

[0010] As preferred, the laser comprises a mounting box, which is arranged on the roller shaft of the printing roller and is fixedly connected with the first support frame, and a laser head is arranged on the mounting box.

[0011] As preferred, the light sensing assembly comprises a light board and a light sensor, both of which are connected to the vertical plate, the light board is provided with a light hole, the light hole is on the same axis with the light sensor, and a terminal post is connected to the light sensor.

[0012] Compared with the prior art, the utility provides an automatic alignment device for the intaglio printing roller, which has the following beneficial effects:

[0013] The utility sets the laser on the roller shaft of the printing roller and is equipped with a light sensing assembly, when the printing roller is offset due to long-time work or other reasons, the light emitted by the laser will be offset synchronously, the light sensing assembly cannot receive the light signal emitted by the laser, thereby realizing real-time monitoring of whether the position of the printing roller is accurate.

[0014] The features and advantages of the utility will be described in detail in combination with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility;

[0016] Figure 2 It is a schematic diagram of the alignment mechanism of the utility;

[0017] Figure 3 It is a schematic diagram of the light sensing assembly of the utility; Figure 2 It is an enlarged view of A in the middle;

[0018] Figure 4 It is an enlarged view of B in the middle; Figure 1 It is an enlarged view of B in the middle, and it is a schematic diagram of the structure of the light sensing assembly of the utility;

[0019] In the figure: 1, base plate; 2, first support frame; 3, second support frame; 4, alignment mechanism; 5, laser; 6, vertical plate; 7, light sensing assembly; 21, printing plate roller; 22, printing pressure roller; 41, connecting ring; 42, transmission shaft; 43, movable adjusting cylinder; 44, adjusting cylinder; 45, stepped hole; 411, stroke hole; 412, guide column; 421, threaded section; 451, flat wall hole; 452, internally threaded hole; 51, mounting box; 52, laser head; 53, left fixed clamping plate; 71, light alignment plate; 72, light sensor; 73, light alignment hole; 74, terminal post. DETAILED DESCRIPTION

[0020] To make the purpose, technical scheme and advantages of the present application more clear and intelligible, the present application is further described in detail below with the help of drawings and examples. However, it should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0021] Referring to Figure 1 , the present application provides an automatic alignment device for a gravure printing roller, comprising a base plate 1, wherein the base plate 1 is provided with a first support frame 2 and a second support frame 3, the first support frame 2 is connected with a printing plate roller 21 and a printing pressure roller 22, the printing pressure roller 22 is located above the printing plate roller 21, the second support frame 3 is provided with an alignment mechanism 4 for adjusting the printing pressure roller 22, the alignment mechanism 4 comprises a connecting ring 41, the connecting ring 41 is connected to the roller shaft of the printing pressure roller 22, one end of the printing pressure roller 22 is provided with a laser 5, the base plate 1 is further provided with a vertical plate 6 near the side of the laser 5, and the vertical plate 6 is provided with a light sensing assembly 7.

[0022] Referring to Figures 2-3 , specifically, stroke holes 411 are formed on both sides of the connecting ring 41, guide columns 412 are arranged in the stroke holes 411, and the guide columns 412 are connected to the bottom of the stroke holes 411.

[0023] Referring to Figures 2-3 , specifically, the alignment mechanism 4 further comprises two transmission shafts 42 and two movable adjusting cylinders 44 arranged symmetrically, the transmission shaft 42 is movably connected to the second support frame 3, one end of the transmission shaft 42 is connected with a servo motor 43 through a shaft coupling, the servo motor 43 is connected to the second support frame 3, and the outer wall of the movable adjusting cylinder 44 is movably connected with the stroke hole 411.

[0024] Referring to Figures 2-3Specifically, the activity adjusting cylinder 44 is internally provided with a stepped hole 45, the stepped hole 45 comprises a flat wall hole 451 and an internally threaded hole 452, the flat wall hole 451 is movably connected with the guide column 412 through a shaft hole, the transmission shaft 42 is provided with a threaded section 421 at the other end, the threaded section 421 is threadedly connected with the internally threaded hole 452, the servo motor 43 is used for providing power to drive the transmission shaft 42 to rotate, and then the threaded section 421 drives the activity adjusting cylinder 44 to displace, and then the connecting ring 41 is moved, so that the position of the printing pressure roller 22 is adjusted.

[0025] Referring to Figure 4 Specifically, the laser 5 comprises a mounting box 51, the mounting box 51 is arranged on the roller shaft of the printing pressure roller 22 and is fixedly connected with the first support frame 2, and the mounting box 51 is provided with a laser head 52.

[0026] Referring to Figure 4 Specifically, the light sensing assembly 7 comprises a light receiving plate 71 and a light sensor 72, the light receiving plate 71 and the light sensor 72 are both connected to the vertical plate 6, the light receiving plate 71 is provided with a light receiving hole 73, the light receiving hole 73 is on the same axis as the light sensor 72, the light sensor 72 is connected with a wiring column 74, the laser 5 emits laser beams through the laser head 52, the laser beams pass through the light receiving hole 73 and irradiate on the light sensor 72, and the light sensor 72 receives the light signal emitted by the laser 5, which indicates that the position of the printing pressure roller 22 is accurate, and the wiring column 74 is used for connecting an external controller.

[0027] The working principle of the utility model is as follows: in the working project of the printing machine, the laser 5 is in an open state, the laser 5 emits laser beams through the laser head 52, the laser beams pass through the light receiving hole 73 and irradiate on the light sensor 72, and the light sensor 72 receives the light signal emitted by the laser 5, which indicates that the position of the printing pressure roller 22 is accurate, otherwise, it indicates that the position of the printing pressure roller 22 has deviated, at this time, the servo motor 43 is started, the servo motor 43 drives the transmission shaft 42 to rotate, and then the threaded section 421 and the internally threaded hole 452 are threadedly connected, the threaded section 421 drives the activity adjusting cylinder 44 to displace, and then the connecting ring 41 is moved, the printing pressure roller 22 is correspondingly displaced, until the light sensor 72 receives the laser emitted by the laser 5 again, so that the position adjustment of the printing pressure roller 22 is completed.

[0028] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement or improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic alignment device for a gravure printing roll, characterized by: The utility model provides a printing device, including base plate (1), first support frame (2) and second support frame (3) are equipped on base plate (1), the first support frame (2) is connected with printing plate roller (21) and printing pressure roller (22), the printing pressure roller (22) is located printing plate roller (21) top, the second support frame (3) is equipped with the alignment mechanism (4) for adjusting printing pressure roller (22), the alignment mechanism (4) includes connecting ring (41), connecting ring (41) is connected on the roller axle of printing pressure roller (22), one end of printing pressure roller (22) is equipped with laser (5), the base plate (1) is also equipped with the stand (6) near laser (5) side, the stand (6) is equipped with light sensing assembly (7).

2. An automatic registration device for a gravure printing cylinder as defined in claim 1, characterized in that: Both sides of the connecting ring (41) are provided with stroke holes (411), the stroke holes (411) are provided with guide columns (412), and the guide columns (412) are connected to the bottoms of the stroke holes (411).

3. An automatic registration device for a gravure printing cylinder as defined in claim 2, characterized in that: The alignment mechanism (4) further includes two transmission shafts (42) and two movable adjusting barrels (44) symmetrically arranged, the transmission shafts (42) are movably connected to the second support frame (3), one end of each transmission shaft (42) is connected with a servo motor (43) through a shaft coupling, the servo motor (43) is connected to the second support frame (3), and the movable adjusting barrels (44) are movably connected to the stroke holes (411).

4. An automatic registration device for a gravure printing cylinder as defined in claim 3, characterized in that: The movable adjusting barrels (44) are provided with stepped holes (45) therein, the stepped holes (45) include flat wall holes (451) and internally threaded holes (452), the flat wall holes (451) are movably connected to the guide columns (412) through shaft holes, and the other ends of the transmission shafts (42) are provided with threaded sections (421), which are screw-connected to the internally threaded holes (452).

5. An automatic registration device for a gravure printing cylinder as defined in claim 1, characterized in that: The laser (5) includes a mounting box (51), the mounting box (51) is arranged on the roller axle of the printing pressure roller (22) and is fixedly connected to the first support frame (2), and the mounting box (51) is provided with a laser head (52).

6. An automatic registration device for a gravure printing cylinder as defined in claim 1, characterized in that: The light sensing assembly (7) includes a light-sensing plate (71) and a light sensor (72), the light-sensing plate (71) and the light sensor (72) are connected to the stand (6), the light-sensing plate (71) is provided with a light-sensing hole (73), the light-sensing hole (73) and the light sensor (72) are on the same axis, and the light sensor (72) is connected with a wiring post (74).

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