An offset printing machine ink absorption and recovery system

Abstract

This utility model provides an ink absorption and recovery system for an offset printing machine, belonging to the technical field of offset printing machines. It includes an offset printing machine body, a base at the bottom of the machine body, and a gantry support on the base. A telescopic device is installed on the crossbeam of the support, and the crossbeam is connected to an ink absorption hood via the telescopic device. The ink absorption hood has an ink absorption chamber inside, with an ink absorption hole at its bottom, and the chamber is connected to a recovery pipe. A recovery box is located on the side wall of the offset printing machine body, and a recovery pump is connected to the recovery box. The inlet of the recovery pump is connected to the recovery pipe. An output pump is connected to the recovery box, and an output pipe is connected to the outlet of the output pump, which is connected to the ink fountain of the offset printing machine body. This system, through its adjustable ink absorption hood and intelligent liquid level control, achieves efficient ink recovery and ink recycling, reducing waste and pollution, and improving adaptability and ease of installation and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of offset printing machine technology, and in particular to an offset printing machine ink absorption and recovery system. Background Technology

[0002] As the core equipment of offset printing, the offset printing press relies on the principle of oil-water immiscibility and indirect transfer technology to achieve high-precision printing through a three-stage transfer of the printing plate, blanket, and substrate. It also has advantages such as multi-color overprinting and dynamic water-ink balance control. It is widely used in the production of commercial promotional materials, packaging materials, and publications. With the trends of digitalization, greening, and intelligence, it continues to upgrade, integrating technologies such as CTP plate making, alcohol-free dampening plates, and AI ink control. While improving efficiency, it significantly reduces energy consumption and pollution, becoming a key piece of equipment in the modern printing industry that balances quality, efficiency, and sustainability.

[0003] Offset printing presses, as core equipment in the modern printing industry, possess many advantages mentioned above. However, in actual use, they still have the following shortcomings: During high-speed printing, the shear force generated by the ink transfer between ink rollers produces a large number of fine ink splatter particles. These splatter particles, typically between 5 and 50 micrometers in diameter, are suspended in the printing environment as aerosols. They not only contaminate the surface of printed materials, leading to a decline in print quality, but also pose a threat to the health of operators; long-term inhalation can cause respiratory diseases and other problems. Furthermore, the generation of ink splatter wastes ink, increasing production costs. Therefore, how to effectively recover ink splatter has become an important research direction in the field of offset printing press technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing offset printing machines, which generate a large number of ink splatter particles during the printing process and have a low rate of ink splatter particle recycling, and to provide an offset printing machine ink absorption and recovery system.

[0005] This utility model is achieved through the following technical solution: an offset printing machine ink absorption and recovery system, including an offset printing machine body, a base at the bottom of the offset printing machine body, and a gantry support located outside the offset printing machine body on the base; a telescopic device is provided on the crossbeam of the gantry support, and the crossbeam is connected to an ink absorption hood located above the offset printing machine body and used for recovering splattered ink through the telescopic device; the telescopic device can extend and retract to drive the ink absorption hood to rise and fall, thereby allowing the ink absorption hood to approach or move away from the splattered ink position of the offset printing machine body. The ink-absorbing hood has an ink-absorbing chamber inside, and the bottom of the ink-absorbing hood has several ink-absorbing holes that communicate with the ink-absorbing chamber. The ink-absorbing chamber is connected to a recovery pipe. A support plate is provided on the side wall of the offset printing machine body, and a recovery box is provided on the support plate. A recovery pump is connected to the side wall pipe of the recovery box, and the inlet of the recovery pump is connected to the recovery pipe. An output pump is connected to the top pipe of the recovery box, and the outlet of the output pump is connected to an output pipe. The output pipe is connected to the ink fountain of the offset printing machine body.

[0006] When the offset printing press generates ink splatter during operation, the recovery pump is activated, creating a negative pressure zone below the ink suction hood. The splattered ink enters the ink suction chamber through the ink suction holes and is then sucked into the recovery box via the recovery pipe. Once the ink in the recovery box reaches a certain level, the output pump is activated, transporting the ink back to the ink fountain of the offset printing press body for recycling through the output pipe. The telescopic device can raise and lower the ink suction hood, adjusting its distance from the splattered ink position.

[0007] A further improvement of this utility model is that the telescopic device includes two electric telescopic cylinders, which are symmetrically arranged on both sides of the top of the ink absorption cover, and the cylinder body of the electric telescopic cylinder is connected to the crossbeam, and the extended end of the electric telescopic cylinder is connected to the ink absorption cover.

[0008] A further improvement of this utility model is that the ink absorption chamber has a conical structure, the bottom surface of the ink absorption chamber is close to the bottom end of the ink absorption hood, and the tip of the ink absorption chamber is connected to the recovery tube.

[0009] A further improvement of this invention is that both the recovery pipe and the output pipe are equipped with one-way valves.

[0010] A further improvement of this utility model is that the recycling tank is equipped with a level gauge, which is connected to the recycling pump and the output pump respectively, and the level gauge can independently control the operation of the recycling pump or the output pump.

[0011] A further improvement of this utility model is that the bottom end of the offset printing machine body is provided with a support foot, the top end of the base is provided with a connecting groove corresponding to the support foot, and the top end of the connecting groove is an open structure connected to one side of it, and the support foot is slidably connected to the connecting groove.

[0012] A further improvement of this utility model is that a fixing pin is provided at the bottom of the side wall of the offset printing machine body, and a pin hole is provided at the top of the base to cooperate with the fixing pin.

[0013] A further improvement of this utility model is that the pin handle of the fixing pin is made of magnetic material, and the magnetic pin handle can magnetically engage with the side wall of the offset printing machine body to fix the position of the fixing pin rod.

[0014] A further improvement of this utility model is that an automatic exhaust valve is provided at the top of the recycling box.

[0015] A further improvement of this utility model is that the bottom end of the base is provided with a self-locking universal wheel.

[0016] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0017] 1. This system achieves high ink recovery and reuse rates through a dynamically adjustable ink absorption device and a conical chamber structure. The ink recovery effect is excellent, significantly reducing ink waste and lowering raw material consumption costs. Simultaneously, ink recycling avoids environmental pollution, reduces the frequency of manual cleaning, and improves production efficiency.

[0018] 2. This system can dynamically adjust according to different offset printing machine models and operating conditions through electric telescopic device and automatic liquid level control system, further reducing energy consumption. Moreover, the modular design supports rapid installation and commissioning and flexible scheduling of multiple workstations, meeting the diverse production needs of the workshop.

[0019] 3. This system effectively reduces vibration during equipment operation through magnetic fixing and a self-locking wheel structure, greatly improving system stability and printing quality. Simultaneously, the one-way valve and automatic exhaust valve design prevent ink backflow and abnormal air pressure, reducing the risk of equipment failure and extending the system's service life. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the connection structure of the base, gantry bracket and telescopic device in a specific embodiment of this utility model.

[0023] Figure 3 This is a cross-sectional view of the ink absorber of a specific embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the offset printing machine body according to a specific embodiment of this utility model.

[0025] In the diagram: 1. Offset printing machine body; 2. Base; 201. Connecting groove; 3. Gantry support; 4. Electric telescopic cylinder; 5. Ink suction hood; 501. Ink suction chamber; 502. Ink suction hole; 6. Recovery pipe; 7. Support plate; 8. Recovery box; 9. Recovery pump; 10. Output pump; 11. Output pipe; 12. Automatic exhaust valve; 13. Fixing pin; 14. Support leg; 15. Wheel. Detailed Implementation

[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0027] Example 1, refer to Appendix Figure 1 —4, as explained below: The offset printing machine ink absorption and recovery system of this utility model includes an offset printing machine body 1, a base 2 is provided at the bottom of the offset printing machine body 1, and a gantry support 3 located outside the offset printing machine body 1 is provided on the base 2; a telescopic device is provided on the crossbeam of the gantry support 3, and the crossbeam is connected to an ink absorption hood 5 located above the offset printing machine body 1 and used for recovering splattered ink through the telescopic device. The telescopic device can extend and retract to drive the ink absorption hood 5 to rise and fall, so that the ink absorption hood 5 can move closer to or away from the splattered ink position of the offset printing machine body 1; the interior of the ink absorption hood 5 is provided with The offset printing press 1 has an ink absorption chamber 501, and the bottom end of the ink absorption hood 5 has several ink absorption holes 502 that communicate with the ink absorption chamber 501. The ink absorption chamber 501 is connected to a recovery pipe 6. A support plate 7 is provided on the side wall of the offset printing press 1, and a recovery box 8 is provided on the support plate 7. A recovery pump 9 is connected to the side wall pipe of the recovery box 8, and the inlet of the recovery pump 9 is connected to the recovery pipe 6. An output pump 10 is connected to the top pipe of the recovery box 8, and an output pipe 11 is connected to the outlet of the output pump 10. The output pipe 11 is connected to the ink fountain of the offset printing press 1.

[0028] When the offset printing machine body 1 generates ink splatter during operation, the recovery pump 9 is activated, creating a negative pressure zone below the ink suction hood 5. The splattered ink enters the ink suction chamber 501 through the ink suction hole 502, and is then sucked into the recovery box 8 through the recovery pipe 6. When the ink in the recovery box 8 reaches a certain amount, the output pump 10 is activated, sending the ink back to the ink fountain of the offset printing machine body 1 for recycling through the output pipe 11. The telescopic device can raise and lower the ink suction hood 5, adjusting the distance from the splattered ink position.

[0029] This system enables automatic recovery and recycling of fly ink, reducing ink waste; the adjustable ink suction hood 5 can adapt to fly ink recovery under different working conditions, improving recovery efficiency.

[0030] For details, please refer to the appendix. Figure 2 The telescopic device includes two electric telescopic cylinders 4, which are symmetrically arranged on both sides of the top of the ink absorption cover 5. The cylinder body of the electric telescopic cylinder 4 is connected to the crossbeam, and the extended end of the electric telescopic cylinder 4 is connected to the ink absorption cover 5.

[0031] Referring to existing electric cylinder synchronous extension and retraction technology, two electric telescopic cylinders 4 extend and retract synchronously, driving the ink suction cover 5 to rise and fall smoothly. By controlling the extension length of the electric telescopic cylinders 4, the distance between the ink suction cover 5 and the ink spray position can be precisely adjusted.

[0032] This system ensures the stability of the ink suction hood 5 during the lifting process through symmetrically arranged electric telescopic cylinders 4, avoiding uneven recycling caused by tilting; the electric control mode enables remote operation and automated control, improving ease of use.

[0033] For details, please refer to the appendix. Figure 3 The ink absorption chamber 501 has a conical structure, with its bottom surface close to the bottom end of the ink absorption hood 5, and its tip connected to the recovery tube 6.

[0034] The conical ink-absorbing chamber 501 causes the incoming ink to swirl within the chamber, with ink particles gathering at the bottom of the chamber and finally being discharged through the tip-shaped recovery tube 6.

[0035] The aforementioned conical structure optimizes the flow path of ink particles within the chamber, promotes the aggregation and discharge of ink particles, reduces ink residue within the chamber, and improves recycling efficiency. Simultaneously, the conical tip is connected to the recycling pipe 6, facilitating the centralized delivery of ink.

[0036] Specifically, both the recovery pipe 6 and the output pipe 11 are equipped with one-way valves.

[0037] Referring to existing valve control technology, the one-way valve on the recovery pipe 6 prevents ink in the recovery box 8 from flowing back to the ink suction hood 5; the one-way valve on the output pipe 11 prevents ink in the ink fountain from flowing back into the recovery box 8.

[0038] The system's design of the aforementioned one-way valve ensures unidirectional ink flow within the system, preventing contamination and reduced recycling efficiency caused by backflow, and guaranteeing the stability and reliability of the system's operation.

[0039] Specifically, the recycling tank 8 is equipped with a level gauge, which is connected to the recycling pump 9 and the output pump 10 by signal, and the level gauge can independently control the operation of the recycling pump 9 or the output pump 10.

[0040] Referring to the existing liquid level monitoring design, the liquid level sensor monitors the ink level in the recovery tank 8 in real time. When the liquid level reaches the set upper limit, the liquid level sensor sends a signal to the recovery pump 9 to stop it from working; when the liquid level drops to the set lower limit, the liquid level sensor sends a signal to the output pump 10 to stop it from working.

[0041] Through the design of the aforementioned level gauge, this system achieves automatic control of the recovery pump 9 and the output pump 10, preventing ink overflow or evacuation from the recovery tank 8, thus improving the automation level and safety of the system. At the same time, the system dynamically adjusts the pump operation according to the liquid level, saving energy.

[0042] Specifically, an automatic exhaust valve 12 is provided at the top of the recycling box 8.

[0043] Referring to existing valve control technology, when the air pressure inside the recycling box 8 rises to a set value due to ink flow or temperature changes, the automatic exhaust valve 12 opens to release excess gas; when the air pressure returns to normal, the automatic exhaust valve 12 closes.

[0044] Through the design of the aforementioned automatic exhaust valve 12, this system can balance the air pressure inside the recycling tank 8, preventing ink leakage or reduced pump efficiency due to excessive air pressure; at the same time, it prevents outside air from entering the recycling tank 8, reducing the risk of ink oxidation and contamination.

[0045] Specifically, the bottom of the base 2 is equipped with self-locking omnidirectional wheels 15.

[0046] Referring to existing wheel designs, the self-locking swivel wheel 15 allows the system to move flexibly to the desired position. Once in position, the wheel is locked by operating the self-locking device to prevent the system from slipping.

[0047] This system improves the mobility of the equipment by using self-locking omnidirectional wheels 15, making it easier to move and rearrange the equipment. The self-locking function ensures that the equipment is fixed in position during operation, guaranteeing the stability and safety of the system.

[0048] Example 2, see attached document Figure 1 and 2The following is an explanation: Based on Embodiment 1, the bottom end of the offset printing machine body 1 is provided with a support foot 14, and the top end of the base 2 is provided with a connecting groove 201 corresponding to the support foot 14. The top end of the connecting groove 201 is an open structure connected to one side of it, and the support foot 14 is slidably connected to the connecting groove 201.

[0049] The offset printing machine body 1 slides in the connecting groove 201 of the base 2 via the support foot 14, and the position of the offset printing machine body 1 on the base 2 can be adjusted laterally.

[0050] Through the above design, this system facilitates the installation and position adjustment of the offset printing machine body 1, and allows for flexible equipment arrangement according to actual work needs; the open structure of the connecting groove 201 facilitates the installation and disassembly of the support feet 14, improving the maintainability of the equipment.

[0051] For details, please refer to the appendix. Figure 1 and 2 The offset printing machine body 1 is provided with a fixing pin 13 at the bottom of its side wall, and the base 2 is provided with a pin hole at its top for insertion and fitting of the fixing pin 13. After the fixing pin 13 is inserted into the pin hole, it can fix the position of the offset printing machine body 1.

[0052] After the offset printing machine body 1 is adjusted to the appropriate position, the fixing pin 13 is inserted into the pin hole on the base 2 to restrict the sliding of the support foot 14 in the connecting groove 201, thereby fixing the position of the offset printing machine body 1.

[0053] The system, through the design of the fixed pin 13, can ensure the stability of the offset printing machine body 1 during operation, avoid positional displacement caused by vibration or external force, and ensure the normal operation and recycling effect of the equipment.

[0054] Specifically, the handle of the fixing pin 13 is made of magnetic material, and the magnetic handle can magnetically engage with the side wall of the offset printing machine body 1 to fix the position of the fixing pin 13.

[0055] The magnetic pin handle is magnetically attached to the side wall of the offset printing machine body 1, generating an adsorption force to firmly hold the pin of the fixing pin 13 in the pin hole.

[0056] Compared to traditional mechanical fixing methods, magnetic fixing is more convenient and faster, and can provide reliable fixing force to prevent the fixing pin 13 from accidentally falling off; at the same time, the magnetic engagement method does not require tools when disassembling, improving operation efficiency.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An offset printing machine ink absorption and recovery system, comprising an offset printing machine body (1), characterized in that, The offset printing machine body (1) has a base (2) at its bottom end, and a gantry support (3) located outside the offset printing machine body (1) is provided on the base (2); a telescopic device is provided on the crossbeam of the gantry support (3), and the crossbeam is connected to an ink suction hood (5) located above the offset printing machine body (1) through the telescopic device; an ink suction chamber (501) is provided inside the ink suction hood (5), and several ink suction holes (502) communicating with the ink suction chamber (501) are opened at the bottom end of the ink suction hood (5), and the ink suction chamber... The chamber (501) is connected to a recycling pipe (6); a support plate (7) is provided on the side wall of the offset printing machine body (1), and a recycling box (8) is provided on the support plate (7); a recycling pump (9) is connected to the side wall pipe of the recycling box (8), and the inlet of the recycling pump (9) is connected to the recycling pipe (6); an output pump (10) is connected to the top pipe of the recycling box (8), and an output pipe (11) is connected to the outlet of the output pump (10), and the output pipe (11) is connected to the ink fountain of the offset printing machine body (1).

2. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, The telescopic device includes two electric telescopic cylinders (4), which are symmetrically arranged on both sides of the top of the ink absorption cover (5). The cylinder body of the electric telescopic cylinder (4) is connected to the crossbeam, and the extended end of the electric telescopic cylinder (4) is connected to the ink absorption cover (5).

3. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, The ink absorption chamber (501) has a conical structure. The bottom surface of the ink absorption chamber (501) is close to the bottom end of the ink absorption hood (5), and the tip of the ink absorption chamber (501) is connected to the recovery tube (6).

4. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, Both the recovery pipe (6) and the output pipe (11) are equipped with one-way valves.

5. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, The recycling tank (8) is equipped with a level gauge, which is connected to the recycling pump (9) and the output pump (10) respectively. The level gauge can control the operation of the recycling pump (9) or the output pump (10) independently.

6. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, The bottom end of the offset printing machine body (1) is provided with a support foot (14), and the top end of the base (2) is provided with a connecting groove (201) corresponding to the support foot (14). The top end of the connecting groove (201) is an open structure connected to one side of it. The support foot (14) is slidably connected to the connecting groove (201).

7. The offset printing machine ink absorption and recovery system according to claim 6, characterized in that, The bottom of the side wall of the offset printing machine body (1) is provided with a fixing pin (13), and the top of the base (2) is provided with a pin hole that is inserted and cooperates with the fixing pin (13).

8. The offset printing machine ink absorption and recovery system according to claim 7, characterized in that, The pin handle of the fixing pin (13) is made of magnetic material. The magnetic pin handle can magnetically engage with the side wall of the offset printing machine body (1) to fix the position of the pin of the fixing pin (13).

9. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, An automatic exhaust valve (12) is provided at the top of the recycling box (8).

10. The offset printing machine ink absorption and recovery system according to claim 1, characterized in that, The bottom of the base (2) is provided with a self-locking universal wheel (15).

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