Axial reciprocating structure of printing shaft roller

Abstract

The utility model discloses an axial reciprocating structure of a printing shaft roller, which comprises a first side plate, a second side plate, an ink roller, a first ink channeling roller, a second ink channeling roller and a channeling module, and the ink roller, the first ink channeling roller and the second ink channeling roller are movably arranged between the first side plate and the second side plate at intervals along the printing sequence. The end portion of one end of the ink roller extends outwards to the outer side of the second side plate, the linkage assembly is in transmission connection with the end portion of one end of the ink roller and the front side face of the rotating frame, and the ink roller is driven by the main driving source to be in linkage with the rotating frame to swing through the linkage assembly so as to drive the first ink channeling roller and the second ink channeling roller to axially float in the opposite directions. Compared with the prior art, the device has the beneficial effects that the rotating power of the ink rollers is adopted as main power, the linkage assembly is in linkage with the rotating frame to rotate so as to drive the first ink channeling roller and the second ink channeling roller to axially move in the opposite directions, the linkage structure and the channeling structure are overall mechanical structures, and the device has the advantages of being good in synchronism, small in occupied structural space and easy and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of printing machine color groups, particularly relates to a printing shaft roller's axial reciprocating structure. BACKGROUND

[0002] In printing processes such as offset printing, intaglio printing, etc., the printing unit (color group) is the core component to realize color overprint. Each color group usually includes a plate cylinder, a rubber cylinder, a printing cylinder and an ink supply system. The ink roller in the ink supply system plays a crucial role, and its main function is to reciprocate along its axial direction. The core purpose of the reciprocating motion is: 1. The ink on the surface of the ink roller is evenly distributed in the axial direction to avoid local accumulation of ink and ensure that the ink layer transferred to the plate cylinder is uniform and consistent; 2. Effectively disperse the strip-shaped ink unevenness phenomenon (i.e. "ink lever") along the axial direction of the cylinder that may be caused by periodic contact (such as meshing of the ink roller gear); 3. Ensure the uniformity, saturation and consistency of the color of the final printed product, and avoid axial strip marks or color differences.

[0003] However, the applicant found that the ink roller reciprocating drive structure in the prior art has certain defects. Currently, the mainstream ink roller reciprocating drive scheme of the printing machine generally adopts a design of independent drive source. Specifically: this system usually includes a dedicated drive motor (such as a servo motor or a stepper motor), a set of independent transmission mechanism (such as an eccentric wheel-link mechanism, a cam mechanism, a ball screw pair, a crank slider mechanism, etc.), which is used to convert the rotary motion of the motor into the required linear reciprocating motion, and the corresponding support structure and connecting components, which transmit the reciprocating motion to the shaft end of the ink roller.

[0004] The main technical defects of the above prior art are:

[0005] 1. Complex structure, independent drive motor, dedicated transmission mechanism and its support structure significantly increase the complexity of the mechanical system. This leads to an increase in the number of components, and increases the workload and difficulty of assembly, debugging and maintenance.

[0006] 2. Large floor area, the additional drive motor and transmission mechanism need to occupy the valuable space inside or beside the printing unit. In the design of modern printing machines that pursue compactness, high color group number (such as eight colors, ten colors or even more), this space occupation becomes a bottleneck that restricts the equipment layout and miniaturization of the whole machine, increasing the overall size and weight of the equipment.

[0007] 3. Poor linkage with the ink roller system and difficult phase coordination: The ink roller's movement must maintain a specific phase relationship with the roller's rotation (for example, the relative position of the movement reversal point and the roller's meshing point) to achieve optimal ink distribution and prevent sticking. Independent drive sources require additional, complex electrical control systems (such as encoder feedback and synchronization control algorithms) to achieve precise synchronization with the main drive system (which drives the ink roller). This not only increases the complexity and cost of the control system but also makes synchronization accuracy debugging more difficult.

[0008] 4. Dynamic response lag: The independent mechanical transmission chain may introduce additional inertia and clearance, resulting in a relative lag in the dynamic response of the swaying motion to the change in the main transmission speed. When the printing press accelerates, decelerates or fluctuates at a steady speed, it may affect the stability of the ink uniformity effect.

[0009] 5. The cost is high. The additional motors, transmission components, control systems and the resulting design, manufacturing and installation costs increase significantly. Utility Model Content

[0010] The technical problem to be solved by the utility model is to provide an axial reciprocating structure of a printing shaft roller.

[0011] To achieve the above-mentioned purpose, the utility model discloses an axial reciprocating structure of a printing shaft roller, including a first side plate, a second side plate, an ink roller, a first ink-stirring roller, a second ink-stirring roller and a movement module. The first side plate and the second side plate are symmetrically arranged at intervals, and the ink roller, the first ink-stirring roller and the second ink-stirring roller are movably arranged between the first side plate and the second side plate along the printing sequence.

[0012] The slewing module includes a rotating frame and a linkage assembly, the rotating frame is vertically rotatably arranged on the front side of the second side plate, the end portions of one end of the first ink-steering roller and the second ink-steering roller extend outward from the second side plate, and are rotatably connected to the two ends of the rotating frame respectively, the end portion of one end of the ink roller extends outward to the outside of the second side plate, the linkage assembly is rotatably connected to the end portion of one end of the ink roller and the front side of the rotating frame respectively, the ink roller is driven to rotate by a main driving source, and the middle part of the rotating frame is linked to rotate by the linkage assembly, so that the two ends thereof swing to drive the first ink-steering roller and the second ink-steering roller to make axial slewing in opposite directions.

[0013] Furthermore, a column is vertically fixedly provided on the front side surface of the second side plate, and the rotating frame is rotatably connected to the outer periphery of the column through a bearing.

[0014] Further, the outer periphery of the first ink leakage roller end is provided with a first annular recess, the outer periphery of the second ink leakage roller end is provided with a second annular recess, and the two sides of the rotating frame are respectively in transmission connection with the first annular recess and the second annular recess.

[0015] Further, the two sides of the rotating frame are respectively fixedly provided with a first connecting column and a second connecting column, the bottom end of the first connecting column is rotatably arranged in the first annular recess, and the bottom end of the second connecting column is rotatably arranged in the second annular recess.

[0016] Further, the bottom ends of the first connecting column and the second connecting column are respectively rotatably provided with a needle bearing, and the needle bearings on the first connecting column and the second connecting column are respectively intermittently in abutment with the front and rear inner walls of the first annular recess and the second annular recess with the swinging of the two ends of the rotating frame.

[0017] Further, the linkage assembly comprises a connecting sleeve, a first linkage screw and a second linkage screw, the connecting sleeve is fixedly sleeved on the end of the ink roller, the first linkage screw is eccentrically rotatably arranged on the end face of the connecting sleeve, and the two ends of the second linkage screw are connected with the front side of the rotating frame and the outer periphery of the first linkage screw through fish eye bearings.

[0018] Further, the end face of the connecting sleeve is eccentrically provided with a plurality of connecting screw holes.

[0019] The number of the connecting screw holes is three, and the three connecting screw holes are arranged in a triangular distribution.

[0020] Further, the outer periphery of the two ends of the ink roller is rotatably connected with the inner side faces of the first side plate and the second side plate through bearings.

[0021] The main driving source is fixedly arranged on the first side plate, and the end of the ink roller on one end of the first side plate is fixedly connected with the output end of the main driving source.

[0022] Further, the outer periphery of the two ends of the first ink leakage roller and the second ink leakage roller is slidably connected with the first side plate and the second side plate through respective linear bearing seats.

[0023] Compared with the prior art, the beneficial effects of the utility model lie in that the rotation power of the ink roller is used as the main power to drive the rotating frame through the linkage assembly, so that the first ink leakage roller and the second ink leakage roller are driven to axially move in opposite directions, the linkage structure and the movement structure as a whole adopt a mechanical structure, and have the advantages of good synchronism, small occupied structure space and simple maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a top view of the overall structure of the embodiment.

[0025] Figure 2 It is a three-dimensional schematic diagram of the overall structure of this embodiment;

[0026] Figure 3 Schematic diagram of the connection between the first connecting column and the first annular recess in this embodiment. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, Figure 1-Figure 3 The utility model is further described in detail with reference to the accompanying drawings.

[0028] Reference Figure 1 As shown, an axial reciprocating structure of a printing shaft roller includes a first side plate 1, a second side plate 2, an ink roller 3, an ink receiving core shaft 4, a first ink-stirring roller 5, a second ink-stirring roller 6, a main driving source 7 and a stirring module 8.

[0029] In this embodiment, the main driving source 7 is a motor.

[0030] The first side plate 1 and the second side plate 2 are symmetrically arranged front to back, and the ink roller 3, the ink receiving core shaft 4, the first ink roller 5, and the second ink roller 6 are movably arranged between the first side plate 1 and the second side plate 2 at intervals along the printing sequence. Specifically, the first ink roller 5 and the second ink roller 6 are parallel to each other.

[0031] The outer peripheries of the ink roller 3 and the ink receiving core shaft 4 are rotatably connected via the inner surfaces of the first and second side plates 1 and 2. The main drive source 7 is fixedly mounted on the first side plate 1. The end of the ink roller 3 located on one end of the first side plate 1 is fixedly connected to the output end of the main drive source 7. The other end of the ink roller 3 passes through the front side of the second side plate 2.

[0032] Linear bearing seats are fixedly mounted on the first and second side plates 1 and 2, respectively. Needle bearings are rotatably mounted on the outer periphery of each end of the first ink-diverting roller 5 to enable rotation of the first ink-diverting roller 5. The needle bearings at each end of the first ink-diverting roller 5 are slidably connected to the linear bearing seats on the first and second side plates 1 and 2, respectively. The connection structure between the second ink-diverting roller 6 and the first and second side plates 1 and 2 in this embodiment is identical to that of the first ink-diverting roller 5 and will not be further elaborated here.

[0033] The movement module 8 includes a rotating frame 81 and a linkage assembly 82. The rotating frame 81 is rotatably arranged on the front side of the second side plate 2 and is located between the first ink roller 5 and the second ink roller 6. The two ends of the rotating frame 81 are respectively rotatably connected to the first ink roller 5 and the second ink roller 6 through the end of the second side plate 2. The linkage assembly 82 is arranged between the end of the other end of the ink roller 3 and the rotating frame 81. When the ink roller 3 rotates, the linkage assembly 82 drives the middle part of the rotating frame 81 to rotate through the linkage assembly 82, so that its two ends swing to make the first ink roller 5 and the second ink roller 6 move back and forth in opposite directions.

[0034] Recombination Figure 2-3 As described, a column 21 is vertically fixedly provided on the front side of the second side panel 2. Specifically, a connecting block 22 is fixedly provided on the top and bottom ends of the column 21, and the rear side of the connecting block 22 is fixedly connected to the second side panel 2. The outer periphery of the top and bottom ends of the column 21 are fixedly connected to the connecting block 22, respectively.

[0035] The rotating frame 81 is rotatably connected to the outer periphery of the column 21 through a bearing. The first ink-stirring roller 5 passes through a first annular recess 51 provided on the outer periphery of the second side plate 2 , and the second ink-stirring roller 6 passes through a second annular recess 61 provided on the outer periphery of the second side plate 2 .

[0036] A first connecting column 811 and a second connecting column 812 are fixedly provided on both sides of the rotating frame 81, and the top ends of the first connecting column 811 and the second connecting column 812 are fixedly connected to the rotating frame 81, and needle bearings 813 are rotatably provided on their bottom ends. The needle bearings 813 on the first connecting column 811 and the second connecting column 812 are respectively located in the first annular recess 51 and the second annular recess 61.

[0037] The linkage assembly 82 includes a connecting sleeve 821, a first linkage screw 822, and a second linkage screw 823. The connecting sleeve 821 is fixedly mounted on the other end of the ink roller 3. The first linkage screw 822 has an eccentric thread that is screwed onto the end surface of the connecting sleeve 821. The second linkage screw 823 is located between the front side of the turret 81 and the outer periphery of the first linkage screw 822. Specifically, the two ends of the second linkage screw 823 are connected to the middle of the front side of the turret 81 and the outer periphery of the first linkage screw 822 via fisheye bearings.

[0038] Furthermore, the end surface of the connecting sleeve 821 is eccentrically provided with a plurality of connecting screw holes 824. In this embodiment, the number of the connecting screw holes 824 is three, and the three connecting screw holes 824 are arranged in a triangular pattern. The first linkage screw 822 is screwed onto any one of the connecting screw holes 824 according to actual needs.

[0039] In this embodiment, three connecting screw holes are provided as a redundant design to serve as a backup, further ensuring the operational stability of the equipment.

[0040] In this embodiment, the rotational power of the ink roller 3 is used as the main power to rotate the rotating frame 81 through the linkage component 82, thereby driving the first ink roller 5 and the second ink roller 6 to axially move in opposite directions. The linkage structure and the moving structure adopt a mechanical structure as a whole, which has the advantages of good synchronization, small structural space occupation and easy maintenance.

[0041] The working mode of this device is as follows: the main driving source 7 drives the ink roller 3 to rotate, driving the first linkage screw 822 to rotate eccentrically, and the second linkage screw 823 drives the rotating frame 81 to reciprocate forward and reverse around the outer circumference of the column 21 under the action of the first linkage screw 822. At this time, the two sides of the rotating frame 81 swing, and drive the needle bearings 813 located on the first connecting column 811 and the second connecting column 812 to intermittently abut the front and rear side surfaces of the first annular recess 51 and the second annular recess 61 respectively, so as to drive the first ink roller 5 and the second ink roller 6 to reciprocate axially.

[0042] Of course, the above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the scope of protection of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the scope of protection of the utility model.

Claims

1. An axial reciprocating structure of a printing roller, characterized in that: The ink roller (3), the first ink-stirring roller (5), the second ink-stirring roller (6) and the moving module (8) are provided. The first side plate (1) and the second side plate (2) are symmetrically arranged at intervals. The ink roller (3), the first ink-stirring roller (5) and the second ink-stirring roller (6) are arranged between the first side plate (1) and the second side plate (2) in a movable manner at intervals along the printing sequence. The shifting module (8) includes a rotating frame (81) and a linkage assembly (82), wherein the rotating frame (81) is vertically rotatable and arranged on the front side of the second side plate (2), and the end portions of one end of the first ink-shifting roller (5) and the second ink-shifting roller (6) extend outward from the outside of the second side plate (2), and are respectively rotatably connected to the two ends of the rotating frame (81), and the end portion of one end of the ink roller (3) extends outward to the outside of the second side plate (2), and the linkage assembly (82) is respectively rotatably connected to the end portion of one end of the ink roller (3) and the front side of the rotating frame (81), and the ink roller (3) is driven to rotate by the main driving source (7), and the middle part of the rotating frame (81) is rotated by the linkage assembly (82), so that the two ends thereof swing to drive the first ink-shifting roller (5) and the second ink-shifting roller (6) to perform axial shifting in opposite directions.

2. The axial reciprocating structure of the printing roller according to claim 1, characterized in that: A column (21) is vertically fixedly provided on the front side of the second side plate (2), and the rotating frame (81) is rotatably connected to the outer periphery of the column (21) via a bearing.

3. The axial reciprocating structure of the printing roller according to claim 1 or 2, characterized in that: A first annular recess (51) is provided on the outer periphery of the end of the first ink-stirring roller (5), and a second annular recess (61) is provided on the outer periphery of the end of the second ink-stirring roller (6). Both sides of the rotating frame (81) are respectively connected to the first annular recess (51) and the second annular recess (61) in a transmission manner.

4. The axial reciprocating structure of the printing roller according to claim 3, characterized in that: A first connecting column (811) and a second connecting column (812) are fixedly provided on both sides of the rotating frame (81), respectively. The bottom end of the first connecting column (811) is rotatably disposed in the first annular recess (51), and the bottom end of the second connecting column (812) is rotatably disposed in the second annular recess (61).

5. The axial reciprocating structure of the printing roller according to claim 4, characterized in that: The bottom ends of the first connecting column (811) and the second connecting column (812) are respectively rotatably provided with needle bearings (813), and the needle bearings (813) on the first connecting column (811) and the second connecting column (812) intermittently abut against the front and rear inner walls of the first annular recess (51) and the second annular recess (61) as the two ends of the rotating frame (81) swing.

6. The axial reciprocating structure of the printing roller according to claim 1, characterized in that: The linkage assembly (82) comprises a connecting sleeve (821), a first linkage screw (822) and a second linkage screw (823); the connecting sleeve (821) is fixedly sleeved on the end of the ink roller (3); the first linkage screw (822) is eccentrically rotated on the end surface of the connecting sleeve (821); and both ends of the second linkage screw (823) are respectively connected to the front side surface of the rotating frame (81) and the outer periphery of the first linkage screw (822) through fisheye bearings.

7. The axial reciprocating structure of the printing roller according to claim 6, characterized in that: The end surface of the connecting sleeve (821) is eccentrically provided with a plurality of connecting screw holes (824); The number of the connecting screw holes (824) is three, and the three connecting screw holes (824) are arranged in a triangular distribution.

8. The axial reciprocating structure of the printing roller according to claim 1, characterized in that: The outer peripheries of both ends of the ink roller (3) are rotatably connected to the inner side surfaces of the first side plate (1) and the second side plate (2) via bearings; The main driving source (7) is fixedly arranged on the first side plate (1), and the end of the ink roller (3) located on one end of the first side plate (1) is fixedly connected to the output end of the main driving source (7).

9. The axial reciprocating structure of the printing roller according to claim 1, characterized in that: The outer peripheries of both ends of the first ink-stirring roller (5) and the second ink-stirring roller (6) are slidably connected to the first side plate (1) and the second side plate (2) via respective linear bearing seats.

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