Roller ink distributing mechanism

Abstract

The utility model provides a roller ink distributing mechanism which comprises a printing roller rotatably connected to a rack, and an ink distributing mechanism is arranged in the printing roller and used for distributing ink to the printing roller. The ink distributing mechanism comprises a mounting support, an ink distributing roller, an ink roller and a driving assembly, the mounting support is connected to the rack, the ink distributing roller and the ink roller are rotationally connected to the mounting support and are arranged in parallel, and an ink storage groove for containing ink is formed between the ink distributing roller and the ink roller; the driving assembly is connected to the rack and used for pushing the mounting support so that the outer circumferential wall of the ink roller on the mounting support can abut against the inner circumferential wall of the printing roller. Before printing, the installation support can be pushed through the driving assembly, the outer circumferential wall of the ink roller on the installation support abuts against the inner circumferential wall of the printing cylinder, then the printing cylinder rotates, ink can be distributed on the inner circumferential wall of the printing cylinder in advance, finally printing is started, and the situation that printing defects occur to a few pieces of paper is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rapid printing machine accessory technical field, specifically is a cylinder ink uniform mechanism. BACKGROUND

[0002] The rapid printing machine is first to print the character and image and makes the plate, again installs the plate on the printing cylinder of the printing machine, passes through the ink uniform device and evenly applies the ink to the printing cylinder that installs the plate, finally directly or indirectly transfers to the paper, thereby copying the same printing product with the plate.

[0003] The ink uniform device on the market usually includes the ink tank, ink shunt pipe, ink roller, ink roller and the like structure composition, the ink shunt pipe evenly transports the ink in the ink tank to the ink storage groove between the ink roller and the ink roller, and the printing cylinder rotates and evenly coats the ink on the plate.

[0004] Since the ink roller and the inner wall of the printing cylinder do not contact before the paper passes through the printing channel, the ink cannot be uniformly distributed in the inner wall of the printing cylinder in advance, which leads to the situation that the first printed paper is not fully printed, which not only affects the printing quality, but also wastes paper. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a cylinder ink uniform mechanism that can uniformly distribute ink on the cylinder in advance before printing.

[0006] The technical solution of the utility model is to provide a cylinder ink uniform mechanism with the following structure:

[0007] The printing cylinder is rotatably connected to the rack, the printing cylinder is provided with an ink uniform mechanism for uniformly distributing ink on the printing cylinder, the ink uniform mechanism comprises a mounting bracket, an ink roller, an ink roller and a driving assembly, the mounting bracket is connected to the rack, the ink roller and the ink roller are rotatably connected to the mounting bracket, the ink roller and the ink roller are arranged in parallel with each other, and an ink storage groove is formed between the ink roller and the ink roller for containing ink, the driving assembly is connected to the rack and used for pushing the mounting bracket, so that the outer peripheral wall of the ink roller on the mounting bracket abuts against the inner peripheral wall of the printing cylinder.

[0008] Compared with the prior art, the cylinder ink uniform mechanism in the utility model has the following advantages after adopting the above structure:

[0009] The utility model sets the driving assembly on the rack, pushes the mounting bracket through the driving assembly, so that the outer peripheral wall of the ink roller on the mounting bracket abuts against the inner peripheral wall of the printing cylinder, and then the printing cylinder rotates to uniformly distribute ink on the inner peripheral wall in advance, and then the printing starts, so as to avoid the situation that the first few papers are not fully printed.

[0010] Preferably, the drive assembly includes a motor bracket, a drive motor, and a cam. The motor bracket is fixedly mounted on the frame, the drive motor is connected to the motor bracket, and the cam is connected to the output shaft of the drive motor. The drive motor is used to drive the cam to rotate.

[0011] Preferably, the mounting bracket is connected to a drive shaft parallel to the ink roller and the ink roller. A drive wheel is connected to the drive shaft, and the surface of the drive wheel abuts against the convex surface of the cam. A drive motor drives the cam to rotate, causing the convex surface of the cam to abut against the surface of the drive wheel, and thus causing the ink roller on the mounting bracket to press against the inner circumferential wall of the printing cylinder, thereby uniformly coating the ink on the ink roller onto the inner circumferential wall of the printing cylinder.

[0012] Preferably, the drive motor circuit also includes a control unit for controlling the rotation angle of the cam. The control unit can be two microswitches, which are positioned along the rotation trajectory of the cam's convex surface. The rotation angle of the cam is controlled by the cooperation of the two microswitches.

[0013] Preferably, the ink distribution mechanism further includes an infrared beam sensor connected to the mounting bracket for detecting the ink level in the ink reservoir between the ink distribution roller and the ink roller.

[0014] Preferably, the system also includes an ink delivery assembly, which comprises an ink pump bracket, an ink pump motor, an ink distribution pipe, and an ink tank. The ink pump bracket is connected to the frame, and the ink pump motor is fixedly mounted on the ink pump bracket. Both ends of the ink pump motor are connected to the ink distribution pipe and the ink tank respectively through oil delivery pipes. The ink is used to deliver the ink in the ink tank to the ink distribution pipe and then evenly inject it into the ink storage tank between the ink distribution roller and the ink roller through the ink distribution pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 3 This is a partial structural schematic diagram of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Frame, 2. Printing cylinder, 3. Ink distribution mechanism, 31. Mounting bracket, 32. Ink distribution roller, 33. Ink roller, 34. Drive assembly, 341. Motor bracket, 342. Drive motor, 343. Cam, 35. Infrared beam sensor, 36. Push shaft, 37. Push wheel, 4. Ink delivery assembly, 41. Ink pump bracket, 42. Ink distribution pipe, 43. Ink tank. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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. At the same time, the terms "first", "second", etc. are only used to distinguish the names of each component and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a roller ink-spreading mechanism: including a printing roller 2 rotatably connected to a frame 1, and an ink-spreading mechanism 3 provided inside the printing roller 2 for spreading ink evenly on the printing roller 2.

[0023] The ink distribution mechanism 3 includes a mounting bracket 31, an ink distribution roller 32, an ink roller 33, and a drive assembly 34. The mounting bracket 31 is connected to the frame 1. The ink distribution roller 32 and the ink roller 33 are rotatably connected to the mounting bracket 31. The ink distribution roller 32 and the ink roller 33 are arranged parallel to each other, and an ink storage tank for holding ink is formed between them. The drive assembly 34 is connected to the frame 1 and is used to push the mounting bracket 31 so that the outer peripheral wall of the ink roller 33 on the mounting bracket 31 abuts against the inner peripheral wall of the printing cylinder 2.

[0024] The drive assembly 34 includes a motor bracket 341, a drive motor 342, and a cam 343. The motor bracket 341 is fixedly mounted on the frame 1, the drive motor 342 is connected to the motor bracket 341, and the cam 343 is connected to the output shaft of the drive motor 342. The drive motor 342 is used to drive the cam 343 to rotate.

[0025] The mounting bracket 31 is connected to a drive shaft 36 parallel to the ink roller 32 and the ink roller 33. The drive shaft 36 is connected to a drive wheel 37, and the wheel surface of the drive wheel 37 is used to abut against the convex surface of the cam 343.

[0026] This invention features a drive motor 342 mounted on the frame 1. The drive motor 342 drives the cam 343 to rotate, causing the convex surface of the cam 343 to abut against the wheel surface of the push wheel 37. This causes the ink roller 33 on the mounting bracket 31 to be squeezed and deformed against the inner circumferential wall of the printing cylinder 2, thus ensuring a tight fit between the ink roller 33 and the inner circumferential wall of the printing cylinder 2. Then, the printing cylinder 2 rotates, allowing the ink on the ink roller 33 to be evenly coated onto the inner circumferential wall of the printing cylinder 2, completing the pre-inking of the inner circumferential wall of the printing cylinder 2. After the inking is completed, the drive motor 342 drives the cam 343 to rotate, causing the convex surface of the cam 343 to separate from the wheel surface of the push wheel 37. After the force applied to the mounting bracket 31 is removed, the ink roller 33 returns to its original position, and printing begins again, thus avoiding printing defects on the first few sheets of paper.

[0027] The drive motor 342 also has a control unit (not shown in the figure) on its circuitry, which is used to control the rotation angle of the cam 343. The drive motor 342 can be a stepper motor, and the control unit can be two microswitches. The microswitches are set on the rotation trajectory of the convex surface of the cam 343. When the cam 343 rotates, it will be triggered by contacting the microswitches through the convex surface. The rotation angle of the cam 343 can be precisely controlled by the cooperation of the two microswitches.

[0028] This utility model also includes an ink delivery assembly 4, which includes an oil pump bracket 41, an oil pump motor (not shown in the figure), an ink distribution pipe 42, and an ink tank 43. The oil pump bracket 41 is connected to the frame 1, and the oil pump motor is fixedly installed on the oil pump bracket 41. Both ends of the oil pump motor are connected to the ink distribution pipe 42 and the ink tank 43 respectively through oil delivery pipes. The oil pump motor is used to deliver the ink in the ink tank 43 to the ink distribution pipe 42 and then evenly inject it into the ink storage tank between the ink distribution roller 32 and the ink roller 33 through the ink distribution pipe 42.

[0029] The ink distribution mechanism 3 also includes an infrared beam sensor 35 connected to the mounting bracket 31, used to detect the ink level in the ink reservoir between the ink distribution roller 32 and the ink roller 33. The infrared beam sensor 35 is electrically connected to the controller of the oil pump motor, and can control its ink delivery according to the detected information.

[0030] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A roller ink-spreading mechanism, comprising a printing roller (2) rotatably connected to a frame (1), wherein an ink-spreading mechanism (3) is provided inside the printing roller (2) for spreading ink evenly on the printing roller (2); characterized in that: The ink distribution mechanism (3) includes a mounting bracket (31), an ink distribution roller (32), an ink roller (33), and a drive assembly (34). The mounting bracket (31) is connected to the frame (1). The ink distribution roller (32) and the ink roller (33) are rotatably connected to the mounting bracket (31). The ink distribution roller (32) and the ink roller (33) are arranged parallel to each other, and an ink storage tank for holding ink is formed between them. The drive assembly (34) is connected to the frame (1) and is used to push the mounting bracket (31) so that the outer peripheral wall of the ink roller (33) on the mounting bracket (31) abuts against the inner peripheral wall of the printing cylinder (2).

2. The roller ink distribution mechanism according to claim 1, characterized in that: The drive assembly (34) includes a motor bracket (341), a drive motor (342), and a cam (343). The motor bracket (341) is fixedly mounted on the frame (1). The drive motor (342) is connected to the motor bracket (341). The cam (343) is connected to the output shaft of the drive motor (342). The drive motor (342) is used to drive the cam (343) to rotate.

3. The roller ink distribution mechanism according to claim 2, characterized in that: The mounting bracket (31) is connected to a drive shaft (36) parallel to the ink roller (32) and ink roller (33). The drive shaft (36) is connected to a drive wheel (37), and the wheel surface of the drive wheel (37) is used to abut against the convex surface of the cam (343).

4. The roller ink distribution mechanism according to claim 3, characterized in that: The drive motor (342) is also equipped with a control unit on its circuit, which is used to control the rotation angle of the cam (343).

5. The roller ink distribution mechanism according to claim 1, characterized in that: The ink distribution mechanism (3) also includes an infrared beam sensor (35) connected to the mounting bracket (31) for detecting the ink level in the ink reservoir between the ink distribution roller (32) and the ink roller (33).

6. The roller ink distribution mechanism according to claim 1, characterized in that: It also includes an ink delivery assembly (4), which includes an oil pump bracket (41), an oil pump motor, an ink distribution pipe (42), and an ink tank (43). The oil pump bracket (41) is connected to the frame (1), and the oil pump motor is fixedly installed on the oil pump bracket (41). The two ends of the oil pump motor are connected to the ink distribution pipe (42) and the ink tank (43) respectively through oil delivery pipes. The oil pump motor is used to deliver the ink in the ink tank (43) to the ink distribution pipe (42) and inject it evenly into the ink storage tank between the ink distribution roller (32) and the ink roller (33) through the ink distribution pipe (42).

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