Composite printing roller and printing machine

Abstract

The composite printing roller comprises a printing roller body, rotating shafts are arranged at the two ends of the printing roller body, the rotating shafts are connected with an adjusting device, the adjusting device comprises a moving seat, a sliding block and a driving mechanism, a cavity is formed in the moving seat, and a through hole communicated with the cavity is formed in the side face of the moving seat. The through hole and the printing roller body are coaxially arranged, the diameter of the through hole is larger than or equal to that of the printing roller body, the sliding block is arranged in the cavity in a sliding mode and can move in the axial direction of the printing roller body, and the rotating shaft stretches into the cavity and is rotationally connected with the sliding block through a bearing. The driving mechanism is connected with the moving seats and can drive the moving seats to move in the axial direction of the printing roller body so that the two moving seats can get close to each other or get away from each other. The embodiment of the utility model is convenient to disassemble and assemble, and can be suitable for paper with different sizes.

Description

Technical Field

[0001] This utility model relates to the field of printing press technology, and in particular to a composite printing roller and a printing press. Background Technology

[0002] A printing press is a machine for printing text and images. Modern printing presses generally consist of mechanisms for plate mounting, inking, impression, and paper feeding (including folding). The printing roller, used for plate transfer and ink application, is a crucial component of the printing press. In existing technologies, the printing roller needs to be disassembled periodically for cleaning. However, traditional printing roller installation structures are complex and inconvenient to disassemble. Furthermore, because the length of the printing roller is fixed, the printing press is not suitable for different paper sizes, increasing production costs. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a composite printing roller that is easy to assemble and disassemble and is applicable to paper of different sizes.

[0004] This utility model also proposes a printing machine that uses the above-mentioned composite printing roller.

[0005] According to the first aspect of the present invention, a composite printing roller includes a printing roller body. Both ends of the printing roller body are provided with rotating shafts. Each rotating shaft is connected to an adjustment device. The adjustment device includes a movable seat, a slider, and a driving mechanism. The movable seat has a cavity, and its side has a through hole communicating with the cavity. The through hole is coaxially arranged with the printing roller body, and its diameter is greater than or equal to the diameter of the printing roller body. The slider is slidably disposed in the cavity and is capable of moving along the axial direction of the printing roller body. The rotating shaft extends into the cavity and is rotatably connected to the slider via a bearing. Normally, the slider is located on the side of the cavity closer to the printing roller body. The driving mechanism is connected to the movable seat and can drive the movable seat to move along the axial direction of the printing roller body, so that the two movable seats can move closer to or further apart from each other.

[0006] The composite printing roller according to the above embodiments of the present invention has at least the following beneficial effects:

[0007] The composite printing roller provided in this embodiment uses a drive mechanism to drive two moving seats to move closer or further apart. When the two moving seats move closer, since the position and length of the printing roller body remain unchanged, the slider moves away from the through hole within the cavity. This causes the end of the printing roller body to gradually extend into the cavity from the through hole, thereby changing the effective working length of the printing roller body. This allows it to be used with different sizes of paper without the need to change equipment or make complex settings adjustments, thus improving production efficiency and equipment versatility, and reducing production costs. When the two moving seats move further apart, the slider moves relative to each other within the cavity towards the through hole until it abuts against the side wall of the cavity near the through hole. If the moving seats continue to move at this point, they will drive the slider away from the printing roller body, causing the shaft to disengage from the bearing and through hole in sequence. This enables quick disassembly of the printing roller body, simplifies maintenance and cleaning processes, reduces downtime, and improves the efficiency of daily maintenance.

[0008] According to some embodiments of this utility model, under normal conditions, the slider can abut against the side wall of the cavity near the main body of the printing roller.

[0009] According to some embodiments of this utility model, a mounting hole is provided on the side of the slider near the through hole. The mounting hole is coaxially arranged with the through hole, and the diameter of the mounting hole is larger than the diameter of the through hole. The bearing is installed in the mounting hole.

[0010] According to some embodiments of the present invention, the driving mechanism includes a mounting frame, an adjusting screw, and a handwheel. The adjusting screw is rotatably mounted on the mounting frame, and the axial direction of the adjusting screw is parallel to the axial direction of the printing roller body. The bottom of the movable seat is threadedly connected to the adjusting screw, and one end of the adjusting screw is fixedly connected to the handwheel.

[0011] According to some embodiments of the present invention, the mounting bracket is provided with a scale corresponding to the position of the adjusting screw.

[0012] The printing press according to a second aspect of the present invention includes a composite printing roller as described in any one embodiment of the first aspect.

[0013] The printing press according to the above embodiments of the present invention has at least the following beneficial effects:

[0014] The printing press provided in this embodiment uses a composite printing roller driven by a drive mechanism to move two moving seats closer or further apart. When the two moving seats move closer, since the position and length of the printing roller body remain unchanged, the slider moves away from the through hole within the cavity. This causes the end of the printing roller body to gradually extend into the cavity from the through hole, thereby changing the effective working length of the printing roller body. This allows it to be used with different sizes of paper without the need to change equipment or make complex settings adjustments, thus improving production efficiency and equipment versatility, and reducing production costs. When the two moving seats move further apart, the slider moves relative to each other within the cavity towards the through hole until it abuts against the side wall of the cavity near the through hole. If the moving seats continue to move at this point, they will drive the slider away from the printing roller body, causing the shaft to disengage from the bearing and through hole in sequence. This enables quick disassembly of the printing roller body, simplifies maintenance and cleaning processes, reduces downtime, and improves the efficiency of daily maintenance.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of a composite printing roller according to an embodiment of the present invention;

[0018] Figure 2 This is a partial schematic diagram of the composite printing roller according to an embodiment of the present invention.

[0019] In the attached figures, the following labels are used:

[0020] Printing roller body 100; rotating shaft 110;

[0021] Movable seat 200; cavity 201; through hole 202; slider 210; bearing 220;

[0022] Mounting bracket 300; adjusting screw 310; handwheel 320. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Reference Figure 1 and Figure 2According to this utility model, a composite printing roller includes a printing roller body 100. Both ends of the printing roller body 100 are provided with rotating shafts 110, and the rotating shafts 110 are connected to an adjustment device. The adjustment device includes a movable seat 200, a slider 210, and a driving mechanism. A cavity 201 is provided inside the movable seat 200, and a through hole 202 communicating with the cavity 201 is provided on the side of the movable seat 200. The through hole 202 is coaxially arranged with the printing roller body 100, and the diameter of the through hole 202 is greater than or equal to that of the printing roller body 100. The diameter of the body 100 is such that the slider 210 is slidably disposed in the cavity 201 and can move along the axial direction of the printing roller body 100. The rotating shaft 110 extends into the cavity 201 and is rotatably connected to the slider 210 through the bearing 220. Normally, the slider 210 is located on the side of the cavity 201 close to the printing roller body 100. The drive mechanism is connected to the moving seat 200 and can drive the moving seat 200 to move along the axial direction of the printing roller body 100 so that the two moving seats 200 can move closer to or further away from each other.

[0028] It is understood that the composite printing roller provided in this embodiment of the present invention drives two moving seats 200 to move closer or further apart through a driving mechanism. When the two moving seats 200 move closer to each other, since the position and length of the printing roller body 100 remain unchanged, the slider 210 moves in the cavity 201 in a direction away from the through hole 202, thereby causing the end of the printing roller body 100 to gradually extend from the through hole 202 into the cavity 201, thereby changing the effective working length of the printing roller body 100. This allows it to be used for different sizes of paper without the need to change equipment or make complex settings adjustments, thereby improving production efficiency and equipment versatility, and reducing production costs. When the two movable seats 200 move away from each other, the slider 210 moves relative to each other in the cavity 201 along the direction close to the through hole 202 until the slider 210 abuts against the side wall of the cavity 201 close to the through hole 202. If the movable seats 200 continue to move at this time, they will drive the slider 210 away from the printing roller body 100, thereby causing the rotating shaft 110 to disengage from the bearing 220 and the through hole 202 in sequence. This realizes the quick disassembly of the printing roller body 100, simplifies the maintenance and cleaning process, reduces downtime, and improves the efficiency of daily maintenance work.

[0029] Preferably, according to some embodiments of the present invention, under normal conditions, the slider 210 can abut against the side wall of the cavity 201 near the printing roller body 100.

[0030] Understandably, the design of the slider 210 abutting against the side wall of the cavity 201 under normal conditions ensures the stable positioning of the slider 210 in the non-working state, avoids unnecessary displacement, and helps to maintain the precise position of the printing roller body 100.

[0031] It should be noted that in this embodiment of the utility model, the normal state refers to the state when the printing roller body 100 is at its maximum effective working length. At this time, if the slider 210 abuts against the side wall of the cavity 201 near the printing roller body 100, when the drive mechanism drives the two moving seats 200 to move away from each other, the moving seats 200 can immediately drive the slider 210 away from the printing roller body 100, thereby improving the disassembly speed.

[0032] It should be noted that, in this embodiment of the present invention, the diameter of the through hole 202 can be slightly larger than the diameter of the printing roller body 100, or it can be equal to the diameter of the printing roller body 100. It can be determined according to the actual situation and is not specifically limited here.

[0033] Furthermore, according to some embodiments of the present invention, a mounting hole is provided on the side of the slider 210 near the through hole 202. The mounting hole is coaxially arranged with the through hole 202, and the diameter of the mounting hole is larger than the diameter of the through hole 202. The bearing 220 is installed in the mounting hole.

[0034] It is understandable that since the shaft 110 and the bearing 220 are usually an interference fit or a transition fit, and the fit between the bearing 220 and the mounting hole can be one of clearance fit, transition fit, and interference fit depending on the actual situation, in this embodiment of the utility model, in order to enable the shaft 110 to detach from the bearing 220 during disassembly, the diameter of the mounting hole is set to be larger than the diameter of the through hole 202, that is, the outer diameter of the bearing 220 is larger than the diameter of the through hole 202, so that the shaft 110 cannot take the bearing 220 with it when it detaches from the slider 210.

[0035] Furthermore, in some embodiments, when the rotating shaft 110 disengages from the slider 210, it may also take the bearing 220 with it. In this case, the outer diameter of the bearing 220 is equal to or less than the diameter of the through hole 202.

[0036] Furthermore, refer to Figure 1 and Figure 2 According to some embodiments of the present invention, the drive mechanism includes a mounting frame 300, an adjusting screw 310, and a handwheel 320. The adjusting screw 310 is rotatably mounted on the mounting frame 300. The axial direction of the adjusting screw 310 is parallel to the axial direction of the printing roller body 100. The bottom of the movable seat 200 is threadedly connected to the adjusting screw 310. One end of the adjusting screw 310 is fixedly connected to the handwheel 320.

[0037] Understandably, the drive mechanism consisting of the adjusting screw 310 and the handwheel 320 can provide precise axial movement control, making the effective working length adjustment of the printing roller body 100 more accurate, and it has a simple structure and is easy to operate.

[0038] Furthermore, according to some embodiments of the present invention, the mounting bracket 300 is provided with a scale corresponding to the position of the adjusting screw 310.

[0039] Understandably, the scale allows the operator to intuitively read and adjust the specific position of the moving seat 200, enabling fine adjustment of the effective working length of the printing roller body 100. Furthermore, the use of the visual adjustment tool helps ensure the consistency and accuracy of each adjustment.

[0040] Furthermore, according to some embodiments of this utility model, the drive mechanism can also use electrical equipment such as electric push rods or servo motors, thereby enabling automated adjustment and fine adjustment of the position of the moving seat 200. The drive mechanism can also adopt other structural methods, which can be determined according to the actual situation, and will not be elaborated here.

[0041] The printing machine proposed according to this utility model includes the composite printing roller of the above embodiment. Since the printing machine adopts all the above technical solutions, it should have the same beneficial effects, which will not be repeated here.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A composite printing roller, characterized in that, include: The printing roller body has rotating shafts at both ends, and each rotating shaft is connected to an adjustment device. The adjustment device includes a movable seat, a slider, and a drive mechanism. The movable seat has a cavity, and a through hole communicating with the cavity is provided on its side. The through hole is coaxially arranged with the printing roller body, and the diameter of the through hole is greater than or equal to the diameter of the printing roller body. The slider is slidably disposed in the cavity and can move along the axial direction of the printing roller body. The rotating shaft extends into the cavity and is rotatably connected to the slider through a bearing. Normally, the slider is located on the side of the cavity closer to the printing roller body. The drive mechanism is connected to the movable seat and can drive the movable seat to move along the axial direction of the printing roller body so that the two movable seats can move closer to or further apart from each other.

2. The composite printing roller according to claim 1, characterized in that, Under normal conditions, the slider can abut against the side wall of the cavity near the main body of the printing roller.

3. The composite printing roller according to claim 2, characterized in that, The slider has a mounting hole on the side near the through hole. The mounting hole is coaxial with the through hole, and the diameter of the mounting hole is larger than the diameter of the through hole. The bearing is installed in the mounting hole.

4. The composite printing roller according to claim 1, characterized in that, The drive mechanism includes a mounting frame, an adjusting screw, and a handwheel. The adjusting screw is rotatably mounted on the mounting frame, and the axial direction of the adjusting screw is parallel to the axial direction of the printing roller body. The bottom of the movable seat is threadedly connected to the adjusting screw, and one end of the adjusting screw is fixedly connected to the handwheel.

5. The composite printing roller according to claim 4, characterized in that, The mounting bracket is equipped with a scale corresponding to the position of the adjusting screw.

6. A printing press, characterized in that, Includes the composite printing roller as described in any one of claims 1 to 5.

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