Printing roller structure in printing machine

Abstract

The utility model relates to the field of printing, and discloses a printing roller structure in a printing machine, which comprises a main body component and a separation component, the main body component comprises a mounting frame, mounting holes are formed in the two side walls of the mounting frame, bearings are mounted in the mounting holes, transverse shaft rods are connected in the bearings in a matched manner, and connecting shafts are arranged on the inner sides of the shaft rods in an aligned manner; driving mechanisms for driving the connecting shafts to rotate are arranged on the outer sides of the connecting shafts, and a printing roller is fixed between the two connecting shafts; the separating component comprises a positioning mechanism arranged between the connecting shaft and the shaft rod and used for fixing the connecting shaft and the shaft rod, and the positioning mechanism can be separated vertically. Under the action of the positioning mechanism, the connecting shaft and the shaft rod can be fixed, normal printing rotation of the printing roller is kept normal, and the positioning mechanism can be separated up and down, so that the connecting shaft and the shaft rod are not connected any more, and the printing roller and the connecting shaft on the printing roller can be taken down together to be replaced.

Description

Technical Field

[0001] The utility model belongs to the field of printing, in particular to a printing roller structure in a printing machine. Background Art

[0002] The printing roller is responsible for transferring the ink from the ink fountain to the printing plate, ensuring that the ink is evenly covered on the plate. In addition, the surface of the printing roller usually has special textures or holes, which help to evenly distribute the ink on the printing plate.

[0003] The printing roller will wear out after long-term use, and this wear will cause the printing roller to jump, affecting the printing quality. In order to solve this problem, a printing roller is proposed in the Chinese patent with publication number CN217170110U, in which a key block is arranged on the roller shaft, and a key groove is arranged on the gear and the bearing for engagement. The original intention is to facilitate the removal of the printing roller for replacement.

[0004] However, the roller shaft and the bearing are interference fit, which means that the bearing cannot be removed from the roller shaft, so this structure cannot achieve the separation effect. Utility Model Content

[0005] Technical problem to be solved: how to make the printing roller reasonably removable and replaceable.

[0006] Technical solution: The utility model provides a printing roller structure in a printing machine, including a main component and a separation component: the main component includes a mounting frame, and mounting holes are opened on both side walls of the mounting frame, bearings are installed in the mounting holes, and a horizontal shaft rod is matched and connected in the bearing, a connecting shaft is aligned on the inner side of the shaft rod, and a driving mechanism for driving it to rotate is arranged on the outer side, and a printing roller is fixed between the two connecting shafts; the separation component includes a positioning mechanism arranged between the connecting shaft and the shaft rod for fixing the two, and the positioning mechanism can be separated up and down.

[0007] Furthermore, the positioning mechanism includes semicircular plates symmetrically arranged at the upper and lower parts of the connection between the connecting shaft and the shaft rod, and ear plates are constructed on both sides of the semicircular plates. Connecting holes are penetrated through the ear plates, and combination bolts are matched and connected between the upper and lower corresponding connecting holes, so that the two semicircular plates cooperate to form a tightening tube for fixing the connecting shaft and the shaft rod.

[0008] Furthermore, a group of four positioning holes distributed in a rectangular array are opened near the connection point on the connecting shaft and the shaft rod, and a positioning boss is inserted in each positioning hole, and each positioning boss is respectively connected to the inner side of the corresponding semicircular plate.

[0009] Furthermore, a transverse elastic column is connected to the outer side of the connecting shaft; meanwhile, a clamping hole for clamping the elastic column is opened on the inner side of the shaft.

[0010] Furthermore, the driving mechanism includes a servo motor installed outside the mounting frame, and the output shaft of the servo motor and the outer peripheral side of one of the shafts are both fixedly sleeved with mutually meshing gears.

[0011] Furthermore, an installation box covering the driving mechanism is installed on the outer side of the installation frame. On the one hand, air holes are provided on the installation box for heat dissipation; on the other hand, the installation box is screwed together with the side of the installation frame by screws so that the installation box can be removed.

[0012] Technical effect:

[0013] 1. In the utility model, under the action of the positioning mechanism, not only can the connecting shaft and the shaft rod be fixed, so that the printing roller can print and rotate normally, but the positioning mechanism can also be separated up and down, so that the connecting shaft and the shaft rod are no longer connected, so that the printing roller and the connecting shaft thereon can be removed together for replacement.

[0014] 2. In the utility model, the positioning holes and the positioning bosses are used to further engage the connecting shaft and the shaft rod in the lateral direction, so that the connection between the two is tighter, and this engagement is performed synchronously with the fixation of the two semicircular plates, without additional operations, and will not increase the complexity of disassembly and assembly.

[0015] 3. In the present invention, the engaging hole and the elastic column are used to further engage the connecting shaft and the shaft rod in the longitudinal direction. In this engagement, because the elastic column is elastic, the elastic column can be inserted into the engaging hole even if the distance between the two shaft rods remains unchanged. Moreover, this longitudinal engagement cooperates with the above-mentioned transverse engagement to make the connecting shaft and the shaft rod more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the positioning mechanism structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the driving mechanism structure of the utility model;

[0020] In the figure: 1. mounting frame; 2. shaft; 3. printing roller; 4. connecting shaft; 5. positioning mechanism; 501. semicircular plate; 502. ear plate; 503. connecting hole; 504. combination bolt; 6. positioning hole; 7. positioning boss; 8. elastic column; 9. engaging hole; 10. servo motor; 11. gear; 12. mounting box. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0022] The printing roller structure in the printing machine provided in this specific embodiment is as follows: Figure 1 As shown, it includes a main component and a separate component, wherein:

[0023] The main component includes a mounting frame 1, and mounting holes are provided on both side walls of the mounting frame 1. Bearings are installed in the mounting holes, and a transverse shaft 2 is connected in the bearing. A connecting shaft 4 is aligned on the inner side of the shaft 2, and a driving mechanism for driving the shaft 2 to rotate is provided on the outer side. A printing roller 3 is fixed between the two connecting shafts 4. Specifically, one of the shafts 2 is inserted into the outer side of the mounting frame 1 after interference fit with the corresponding bearing. Under this premise, Figure 3 As shown, the driving mechanism includes a servo motor 10 installed on the outside of the mounting frame 1, and the output shaft of the servo motor 10 and the outer peripheral side of one of the shafts 2 are fixedly sleeved with mutually meshing gears 11. In addition, in order to protect the driving mechanism, a mounting box 12 covering the driving mechanism is installed on the outside of the mounting frame 1. On the one hand, air holes are provided on the mounting box 12 for heat dissipation; on the other hand, the mounting box 12 is screwed with the side of the mounting frame 1 by screws so that the mounting box 12 can be removed.

[0024] The separation member includes a positioning mechanism 5 arranged between the connecting shaft 4 and the shaft rod 2 for fixing the two, and the positioning mechanism 5 can be separated up and down, such as Figure 2As shown, the positioning mechanism 5 includes a semicircular plate 501 symmetrically arranged at the upper and lower parts of the connection between the connecting shaft 4 and the shaft rod 2, and ear plates 502 are formed on both sides of the semicircular plate 501, and connecting holes 503 are formed through the ear plates 502. Combination bolts 504 are connected between the upper and lower corresponding connecting holes 503, so that the two semicircular plates 501 cooperate to form a clamping tube for fixing the connecting shaft 4 and the shaft rod 2. In addition, on the one hand, a group of four positioning holes 6 distributed in a rectangular array are opened near the connection on the connecting shaft 4 and the shaft rod 2, and a positioning convex column 7 is inserted in each positioning hole 6, and each positioning convex column 7 is respectively connected to the inner side of the corresponding semicircular plate 501; on the other hand, a transverse elastic column 8 is connected to the outer side of the connecting shaft 4; at the same time, a clamping hole 9 for clamping the elastic column 8 is opened on the inner side of the shaft rod 2. In this way, the locking structure formed by the positioning hole 6 and the positioning protrusion 7 locks the connecting shaft 4 and the shaft rod 2 in the horizontal direction, and the locking structure formed by the elastic column 8 and the locking hole 9 locks the connecting shaft 4 and the shaft rod 2 in the longitudinal direction. These two locking structures cooperate with each other, so that the connecting shaft 4 and the shaft rod 2 can be connected more tightly without adding additional cumbersome operations.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A printing roller structure in a printing machine, comprising a main component and a separation component: The main component comprises a mounting frame (1), and mounting holes are provided on both side walls of the mounting frame (1), bearings are installed in the mounting holes, a transverse shaft (2) is matched and connected in the bearing, a connecting shaft (4) is aligned and arranged on the inner side of the shaft (2), and a driving mechanism for driving the shaft (2) to rotate is arranged on the outer side, and the characteristics are that: A printing roller (3) is fixed between the two connecting shafts (4); The separation component comprises a positioning mechanism (5) arranged between the connecting shaft (4) and the shaft rod (2) for fixing the two, and the positioning mechanism (5) can be separated up and down.

2. The printing roller structure in the printing press according to claim 1, characterized in that: The positioning mechanism (5) comprises a semicircular plate (501) symmetrically arranged at the upper and lower parts of the connection between the connecting shaft (4) and the shaft rod (2), ear plates (502) are formed on both sides of the semicircular plate (501), and connecting holes (503) are formed through the ear plates (502), and a combination bolt (504) is matched and connected between the upper and lower corresponding connecting holes (503), so that the two semicircular plates (501) cooperate to form a clamping tube for fixing the connecting shaft (4) and the shaft rod (2).

3. The printing roller structure in the printing press according to claim 2, characterized in that: A group of four positioning holes (6) distributed in a rectangular array are provided near the connection point on the connecting shaft (4) and the shaft rod (2), and a positioning boss (7) is inserted into each positioning hole (6), and each positioning boss (7) is respectively connected to the inner side of the corresponding semicircular plate (501).

4. The printing roller structure in the printing press according to claim 2 or 3, characterized in that: The outer side of the connecting shaft (4) is connected to a transverse elastic column (8); at the same time, the inner side of the shaft rod (2) is provided with a clamping hole (9) for clamping the elastic column (8).

5. The printing roller structure in the printing press according to claim 1, characterized in that: The driving mechanism comprises a servo motor (10) installed outside the mounting frame (1), and the output shaft of the servo motor (10) and the outer peripheral side of one of the shaft rods (2) are both fixedly sleeved with mutually meshing gears (11).

6. The printing roller structure in the printing press according to claim 5, characterized in that: An installation box (12) covering the driving mechanism is installed on the outer side of the installation frame (1); on the one hand, air holes are provided on the installation box (12) for heat dissipation; on the other hand, the installation box (12) is screwed to the side of the installation frame (1) by screws so that the installation box (12) can be removed.

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