Offset printing machine capable of preventing ink from overflowing

Abstract

The utility model discloses an offset printing press capable of preventing printing ink from overflowing, which belongs to the technical field of mechanical engineering, and is characterized by comprising a base, an adjusting component is arranged at the top of the base, an ink adding component is arranged on the inner side of the base, and the ink adding component comprises an ink box slidably connected to the inner side of the base. According to the offset printing machine, the problems that in the printing operation of an existing offset printing machine, the ink output amount is inconvenient to dynamically adjust according to the actual printing requirement through an ink pump, excessive supply of ink is likely to be caused, when the ink amount exceeds the printing requirement, excessive ink is inconvenient to discharge, and the printing efficiency is poor can be solved. The problems of color deviation and pattern blurring caused by non-uniform ink coating due to excessive ink supply caused by inconvenience in adjusting the distance between an ink box and an ink transfer roller when paper with different thicknesses is printed in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to an offset printing machine capable of preventing ink from overflowing. Background Art

[0002] The structure of early offset printing presses was relatively simple, mainly consisting of basic paper feeding, printing and paper collection components. The paper feeding part relied on simple mechanical devices to separate and transport the paper. The accuracy and coordination of the plate cylinder, rubber cylinder and impression cylinder in the printing part were also relatively limited. With the advancement of mechanical manufacturing technology, materials science and automation technology, offset printing presses have been greatly improved. In terms of mechanical structure, the manufacturing accuracy of the cylinder has been improved, and the material and surface treatment technology of the cylinder have also been innovated.

[0003] In response to the above problems, the existing patent provides a solution. During the printing operation of the existing offset printing machine, the ink pump is not convenient for dynamically adjusting the ink output according to the actual printing needs, which easily leads to excessive ink supply. When the ink volume exceeds the printing requirements, the excess ink is not convenient for discharge and can only accumulate in the pipes or printing parts, eventually causing ink overflow. In addition, it is not convenient to adjust the distance between the ink box and the ink transfer roller. When printing on paper of different thicknesses, it leads to excessive ink supply, resulting in color deviation and blurred patterns caused by uneven ink coating.

[0004] Therefore, an offset printing machine which prevents ink from overflowing is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an offset printing machine that prevents ink overflow, which can solve the problem that the ink pump of the existing offset printing machine is not convenient for dynamically adjusting the ink output according to actual printing needs during printing operation, which easily leads to excessive supply of ink. When the ink amount exceeds the printing requirement, the excess ink is not convenient for discharge and can only accumulate in the pipeline or printing components, eventually causing ink overflow. In addition, it is not convenient to adjust the distance between the ink box and the ink transfer roller, which leads to excessive supply of ink when printing on paper of different thicknesses, resulting in color deviation and blurred patterns caused by uneven ink coating.

[0006] To achieve the above object, the utility model provides the following technical solution: an offset printing machine that prevents ink overflow, comprising a base, an adjustment component is provided on the top of the base, and an ink adding component is provided on the inner side of the base;

[0007] The ink filling assembly includes an ink cartridge slidably connected to the inner side of the base, an ink filling port is provided on the top of the ink cartridge, a top cover is threadedly connected to the top of the ink filling port, an ink pump is bolted inside the ink cartridge, an output end of the ink pump is connected to a delivery pipe, the delivery pipe passes through the bottom of the ink cartridge, the output end of the ink pump is connected to a return pipe, the right side of the ink pump is connected to a discharge pipe, a liquid level sensor is provided on the top of the ink cartridge, and a detection end of the liquid level sensor passes through the top of the ink cartridge.

[0008] Preferably, the adjustment assembly includes a hydraulic rod bolted to the top of the base, the output end of the hydraulic rod is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to the top of the ink cartridge, and both sides of the base are fixedly connected to limit plates.

[0009] Preferably, a slide groove is provided on the inner side of the limiting plate, a slider is slidably connected to the inner side of the slide groove, and the inner side of the slider is fixedly connected to the ink cartridge.

[0010] Preferably, a shock-absorbing pad is bonded to the bottom of the hydraulic rod, and the shock-absorbing pad is made of rubber.

[0011] Preferably, the front side of the bottom of the base is rotatably connected to a rotating rod, the outer side of the rotating rod is fixedly connected to a fixed plate, the front side of the base is clamped with a placement block, and the top of the placement block is adhered with an anti-slip pad.

[0012] Preferably, an auxiliary block is fixedly connected to the front side of the base, a drive motor is bolted to the outer side of the right auxiliary block, and an output end of the drive motor is fixedly connected to a roller.

[0013] Preferably, a mounting seat is fixedly connected to the inner side of the base, and a limiting roller is rotatably connected to the interior of the mounting seat.

[0014] Preferably, an ink transfer roller is provided at the bottom of the ink cartridge, an ink distribution roller is provided at the bottom of the ink transfer roller, and an ink roller is provided at the bottom of the ink distribution roller.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The present application can monitor the ink level and flow in real time through the ink filling component, and uses an intelligent control system and a variable frequency ink pump to achieve high-precision control of the ink volume. Compared with the traditional offset printing press method of setting the ink volume based on experience or fixed parameters, this greatly improves the stability of printing quality, reduces printing defects caused by too much or too little ink, and effectively prevents ink overflow. At the same time, under abnormal pressure conditions, the ink can be promptly returned, avoiding ink leakage and equipment damage caused by high pressure, thereby improving the reliability and safety of the equipment.

[0017] 2. The present application can place the ink cartridge at the optimal height position through the extension and retraction of the hydraulic rod, ensuring that the ink can be accurately and stably supplied to subsequent components such as the ink transfer roller, which is conducive to achieving uniform and appropriate ink coating, thereby improving printing quality. When printing thicker paper, the ink cartridge can be appropriately raised to make it easier for the ink to reach the printing plate cylinder. Conversely, when printing thin paper, the ink cartridge height can be lowered to avoid excessive ink supply, so that the ink delivery path is in the optimal state, ensuring that the ink is transferred and distributed more accurately between the rollers, thereby improving the quality of printed products and reducing problems such as color deviation and pattern blurring caused by uneven ink coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall structural diagram of an offset printing machine that prevents ink overflow according to the utility model;

[0019] Figure 2 This is a cutout diagram of the ink filling assembly of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the adjustment component of the utility model;

[0021] Figure 4 This is a schematic diagram of the bottom side of the base of the utility model;

[0022] Figure 5 It is a structural diagram of the base of the utility model.

[0023] In the figure, 1. base; 2. rotating rod; 3. fixing plate; 4. placing block; 5. ink adding assembly; 51. ink cartridge; 52. ink adding port; 53. top cover; 54. ink pump; 55. delivery pipe; 56. return pipe; 57. discharge pipe; 58. liquid level sensor; 6. adjustment assembly; 61. hydraulic rod; 62. connecting plate; 63. limit plate; 64. slide; 65. slider; 66. shock-absorbing pad; 7. anti-slip pad; 8. auxiliary block; 9. driving motor; 10. roller; 11. mounting seat; 12. limit roller; 13. ink transfer roller; 14. ink distribution roller; 15. inking roller. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 , this utility model provides a technical solution:

[0026] An offset printing machine for preventing ink overflow comprises a base 1, an adjusting component 6 is provided on the top of the base 1, and an ink adding component 5 is provided on the inner side of the base 1;

[0027] The ink filling assembly 5 includes an ink cartridge 51 which is slidably connected to the inner side of the base 1. An ink filling port 52 is provided on the top of the ink cartridge 51. A top cover 53 is threadedly connected to the top of the ink filling port 52. An ink pump 54 is bolted to the inside of the ink cartridge 51. The output end of the ink pump 54 is connected to a delivery pipe 55. The delivery pipe 55 passes through the bottom of the ink cartridge 51. The output end of the ink pump 54 is connected to a return pipe 56. The right side of the ink pump 54 is connected to a discharge pipe 57. A liquid level sensor 58 is provided on the top of the ink cartridge 51. The detection end of the liquid level sensor 58 passes through the top of the ink cartridge 51.

[0028] In this embodiment, ink is added to the ink cartridge 51 through the ink filling port 52. The top cover 53 threadedly connected to the top of the ink filling port 52 can ensure the sealing of the ink cartridge 51 to prevent ink volatilization and impurities from entering. When ink needs to be supplied to the ink transfer roller 13 and other components of the printing press, the ink pump 54 is started, and the ink pump 54 extracts ink from the ink cartridge 51 and delivers the ink through the delivery pipe 55. At the same time, the liquid level sensor 58 monitors the liquid level height of the ink in the ink cartridge 51 in real time. When the liquid level drops or the flow is insufficient, the control system of the liquid level sensor 58 increases the ink pump 51. 4 speed, and vice versa. When the amount of ink in the printing press is too much or the ink pressure needs to be adjusted, part of the ink can flow back to the ink cartridge 51 through the return pipe 56, thereby achieving a dynamic balance between the ink amount and pressure, and effectively preventing the ink from overflowing due to excessive pressure or excessive ink during the transportation process. By real-time monitoring of the ink level and flow, using the intelligent control system and the variable frequency ink pump 54, high-precision control of the ink amount is achieved, which greatly improves the stability of printing quality, reduces printing defects caused by excessive or insufficient ink, and effectively prevents ink overflow.

[0029] Specifically, such as Figure 3 As shown, the adjustment assembly 6 includes a hydraulic rod 61 bolted to the top of the base 1, the output end of the hydraulic rod 61 is fixedly connected to a connecting plate 62, the bottom of the connecting plate 62 is fixedly connected to the top of the ink cartridge 51, and both sides of the base 1 are fixedly connected to a limiting plate 63.

[0030] Specifically, such as Figure 3 As shown, a slide groove 64 is provided on the inner side of the limiting plate 63 , a slider 65 is slidably connected to the inner side of the slide groove 64 , and the inner side of the slider 65 is fixedly connected to the ink cartridge 51 .

[0031] Specifically, such as Figure 3 As shown, a shock-absorbing pad 66 is bonded to the bottom of the hydraulic rod 61, and the shock-absorbing pad 66 is made of rubber.

[0032] In this embodiment: the height of the ink cartridge 51 can be adjusted according to printing requirements through the hydraulic rod 61. Since the output end of the hydraulic rod 61 is fixedly connected to the top of the ink cartridge 51 through the connecting plate 62, when the hydraulic rod 61 is extended or retracted, it drives the ink cartridge 51 to move up and down. Since the inner sides of the limit plates 63 on both sides of the base 1 are provided with slide grooves 64, the sliders 65 fixedly connected on both sides of the ink cartridge 51 slide in the slide grooves 64 to ensure that the ink cartridge 51 can move up and down smoothly under the drive of the hydraulic rod 61 to prevent it from deflecting or shaking. At the same time, the rubber shock-absorbing pad 66 bonded to the bottom of the hydraulic rod 61 can reduce the impact of the vibration generated when the hydraulic rod 61 is working on the entire system, improve the stability of the equipment operation, and thus help to more accurately control the ink supply and printing quality.

[0033] Specifically, such as Figure 4 As shown, the front side of the bottom of the base 1 is rotatably connected to a rotating rod 2, the outer side of the rotating rod 2 is fixedly connected to a fixing plate 3, the front side of the base 1 is clamped with a placement block 4, and the top of the placement block 4 is bonded with an anti-slip pad 7.

[0034] Specifically, such as Figure 5 As shown, an auxiliary block 8 is fixedly connected to the front side of the base 1 , a drive motor 9 is bolted to the outer side of the right auxiliary block 8 , and a roller 10 is fixedly connected to the output end of the drive motor 9 .

[0035] In this embodiment: by setting a rotating rod 2, a fixed plate 3, a placement block 4 and an anti-slip pad 7, when printing larger paper, the placement block 4 is clamped with the base 1, and then the rotating rod 2 is rotated, and then the rotating rod 2 drives the fixed plate 3 to rotate, and its fixed plate 3 fixes the placement block 4, and its anti-slip pad 7 and placement block 4 assist in transporting the paper to the printing area. By setting an auxiliary block 8, a drive motor 9 and a roller 10, when the drive motor 9 is started, the drive motor 9 drives the roller 10 to rotate, providing power for the transportation of paper, ensuring that the paper can smoothly enter the printing area, realizing automatic paper feeding, and improving printing efficiency.

[0036] Specifically, such as Figure 5 As shown, a mounting seat 11 is fixedly connected to the inner side of the base 1 , and a limiting roller 12 is rotatably connected to the interior of the mounting seat 11 .

[0037] Specifically, such as Figure 1 As shown, an ink transfer roller 13 is provided at the bottom of the ink cartridge 51 , an ink distribution roller 14 is provided at the bottom of the ink transfer roller 13 , and an ink distribution roller 15 is provided at the bottom of the ink distribution roller 14 .

[0038] In this embodiment: by providing a mounting seat 11 and a limiting roller 12, during printing, the paper can smoothly pass through the printing area under the guidance of the limiting roller 12, ensuring the accuracy of the paper conveying path, avoiding paper deviation or wrinkles, and helping to improve printing quality. By providing an ink transfer roller 13, an ink distribution roller 14 and an ink form roller 15, during the printing process, the ink transfer roller 13 first receives the ink from the ink cartridge 51 and transfers the ink to the ink distribution roller 14. Then the ink distribution roller 14 further evens out the ink through its own rotation and contact with other ink distribution rollers 14. The ink form roller 15 finally applies the even ink to the printing plate cylinder 10. As the printing plate cylinder 10 rotates, the ink of the image and text contacts the paper, and the image and text are transferred to the paper at the same time, completing the printing process.

[0039] Working principle: When using an offset printing press that prevents ink overflow, ink is first added to the ink cartridge 51 through the ink filling port 52. The top cover 53 threadedly connected to the top of the ink filling port 52 can ensure the sealing of the ink cartridge 51 to prevent ink volatilization and impurities from entering. When it is necessary to supply ink to the ink transfer roller 13 and other components of the printing press, the ink pump 54 is started. The ink pump 54 extracts ink from the ink cartridge 51 and delivers the ink through the delivery pipe 55. At the same time, the liquid level sensor 58 monitors the liquid level height of the ink in the ink cartridge 51 in real time. When the liquid level drops or the flow is insufficient, the control system of the liquid level sensor 58 will increase the speed of the ink pump 54, otherwise it will reduce the speed. When the amount of ink in the printing press is too much or the ink pressure needs to be adjusted, some ink can be pumped out. The ink flows back to the ink cartridge 51 through the return pipe 56, thereby achieving a dynamic balance between the ink volume and pressure, effectively preventing the ink from overflowing due to excessive pressure or excessive ink volume during the delivery process, and by real-time monitoring of the ink level and flow, using an intelligent control system and a variable frequency ink pump 54, achieving high-precision control of the ink volume, greatly improving the stability of printing quality, reducing printing defects caused by excessive or insufficient ink, and effectively preventing ink overflow. The height of the ink cartridge 51 can be adjusted according to printing requirements through the hydraulic rod 61. Since the output end of the hydraulic rod 61 is fixedly connected to the top of the ink cartridge 51 through the connecting plate 62, when the hydraulic rod 61 is extended and retracted, it drives the ink cartridge 51 to move up and down. Since the inner sides of the limit plates 63 on both sides of the base 1 are opened There is a slide 64, and the sliders 65 fixedly connected on both sides of the ink cartridge 51 slide in the slide 64 to ensure that the ink cartridge 51 can move up and down smoothly under the drive of the hydraulic rod 61 to prevent it from deflecting or shaking. At the same time, the rubber shock-absorbing pad 66 bonded to the bottom of the hydraulic rod 61 can reduce the impact of the vibration generated by the hydraulic rod 61 when working on the entire system, improve the stability of the equipment operation, and thus help to more accurately control the ink supply and printing quality. The driving motor 9 drives the roller 10 to rotate, and the rotation of the roller 10 provides power for the transportation of paper. Under the guidance of the limiting roller 12 rotatably connected to the mounting seat 11 inside the base 1, the paper passes smoothly through the printing area. The ink transfer roller 13, ink distribution roller 14 and ink roller 1 at the bottom of the ink cartridge 51 5 cooperate with each other, the ink transfer roller 13 first receives the ink from the ink box 51 and transfers the ink to the ink distribution roller 14, then the ink distribution roller 14 further evens out the ink through its own rotation and contact with other ink distribution rollers 14, and the inking roller 15 finally applies the even ink to the printing plate cylinder 10. As the printing plate cylinder 10 rotates, the ink of the image and text contacts the paper and transfers the image and text to the paper, completing the printing process. This solves the problem that the ink pump of the existing offset printing machine is not convenient for dynamically adjusting the ink output according to the actual printing demand during the printing operation, which easily leads to excessive ink supply. When the ink amount exceeds the printing requirement, the excess ink is not convenient for discharge and can only accumulate in the pipeline or printing components, eventually causing ink overflow.Moreover, it is not convenient to adjust the distance between the ink box and the ink transfer roller, which results in excessive ink supply when printing on papers of different thicknesses, causing uneven ink coating, color deviation and blurred patterns.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An offset printing machine for preventing ink overflow, comprising a base (1), characterized in that: An adjusting component (6) is provided on the top of the base (1), and an ink adding component (5) is provided on the inner side of the base (1); The ink filling assembly (5) comprises an ink cartridge (51) slidably connected to the inner side of the base (1); an ink filling port (52) is provided on the top of the ink cartridge (51); a top cover (53) is threadedly connected to the top of the ink filling port (52); an ink pump (54) is bolted inside the ink cartridge (51); an output end of the ink pump (54) is connected to a delivery pipe (55); the delivery pipe (55) passes through the bottom of the ink cartridge (51); the output end of the ink pump (54) is connected to a return pipe (56); the right side of the ink pump (54) is connected to a discharge pipe (57); a liquid level sensor (58) is provided on the top of the ink cartridge (51); a detection end of the liquid level sensor (58) passes through the top of the ink cartridge (51).

2. The ink overflow preventing offset printing press according to claim 1, characterized in that: The adjustment assembly (6) comprises a hydraulic rod (61) bolted to the top of the base (1); the output end of the hydraulic rod (61) is fixedly connected to a connecting plate (62); the bottom of the connecting plate (62) is fixedly connected to the top of the ink cartridge (51); and both sides of the base (1) are fixedly connected to limiting plates (63).

3. The ink overflow preventing offset printing press according to claim 2, characterized in that: A sliding groove (64) is provided on the inner side of the limiting plate (63), a slider (65) is slidably connected to the inner side of the sliding groove (64), and the inner side of the slider (65) is fixedly connected to the ink cartridge (51).

4. The ink overflow preventing offset printing press according to claim 2, characterized in that: A shock-absorbing pad (66) is bonded to the bottom of the hydraulic rod (61), and the shock-absorbing pad (66) is made of rubber.

5. The ink overflow preventing offset printing press according to claim 1, characterized in that: The front side of the bottom of the base (1) is rotatably connected to a rotating rod (2), the outer side of the rotating rod (2) is fixedly connected to a fixing plate (3), the front side of the base (1) is clamped with a placement block (4), and the top of the placement block (4) is bonded with an anti-slip pad (7).

6. The ink overflow preventing offset printing press according to claim 1, characterized in that: The front side of the base (1) is fixedly connected to an auxiliary block (8), the outer side of the right auxiliary block (8) is bolted to a driving motor (9), and the output end of the driving motor (9) is fixedly connected to a roller (10).

7. The ink overflow preventing offset printing press according to claim 1, characterized in that: The inner side of the base (1) is fixedly connected to a mounting seat (11), and the interior of the mounting seat (11) is rotatably connected to a limiting roller (12).

8. The ink overflow preventing offset printing press according to claim 1, characterized in that: An ink transfer roller (13) is provided at the bottom of the ink box (51), an ink distribution roller (14) is provided at the bottom of the ink transfer roller (13), and an ink roller (15) is provided at the bottom of the ink distribution roller (14).

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