Digital ink-jet printing roller cleaning mechanism

Abstract

The present application relates to the technical field of printing roller cleaning, in particular to a digital ink-jet printing roller cleaning mechanism, which comprises a cleaning device for cleaning the printing roller cylinder, the printing roller cylinder is externally provided with two racks symmetrically distributed, the cleaning device comprises cleaning structure one, pushing structure, adjusting structure and cleaning structure two; the cleaning structure one comprises a multi-way pipe arranged above the printing roller cylinder, a cleaning piece and a plurality of spray pipes, the spray pipes are fixed to the outer surface of the multi-way pipe. Through the physical friction of the cleaning brush and the chemical action of the cleaning liquid, the present application can remove the stains on the surface of the printing roller cylinder, improve the cleaning effect, ensure the cleanliness of the printing roller cylinder, thereby improving the printing quality, reducing the printing defects caused by the stains on the surface of the roller cylinder, simultaneously driving the cleaning device to work by the rotation of the printing roller cylinder itself, without the need for an additional power source, realizing the automation of the cleaning process, reducing manual operation and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of printing roller cleaning technology, specifically to a digital inkjet printing roller cleaning mechanism. Background Technology

[0002] Digital inkjet printing rollers are textile printing technologies or equipment components that combine digital inkjet technology with the principles of traditional roller printing. They are mainly used for printing patterns on textiles, decorative materials, and other fields. Since pigments, resins, and other components in the ink may remain on the roller surface, long-term accumulation can lead to deposition on the roller surface, corroding the equipment or affecting the shape of ink droplets, thus reducing printing quality. Therefore, it is necessary to clean the printing rollers.

[0003] However, existing digital inkjet printing roller cleaning methods still have the following drawbacks: Manual cleaning is inefficient, relying on manual wiping, which is time-consuming and difficult to thoroughly remove residues from the tiny nozzles, easily overlooking hard-to-reach areas. Improper operation may damage the roller surface. Although some equipment is equipped with automatic cleaning functions, they can usually only handle surface stains, with limited effectiveness against deep blockages or chemical deposits. Automated programs cannot adapt to complex contamination scenarios, requiring manual intervention.

[0004] Therefore, it is urgent to improve the roller cleaning equipment to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a digital inkjet printing roller cleaning mechanism. Through physical friction and the chemical action of cleaning fluid, it can more thoroughly remove stains from the surface of the printing roller, improve the cleaning effect, ensure the cleanliness of the printing roller, thereby improving the printing quality and reducing printing defects caused by stains on the roller surface. At the same time, the cleaning device is driven by the rotation of the printing roller itself, eliminating the need for an additional power source, thus automating the cleaning process, reducing manual operation, lowering labor intensity, and improving production efficiency.

[0006] To achieve the above objectives, the main technical solution adopted by the present invention includes: a digital inkjet printing roller cleaning mechanism, comprising a cleaning device for cleaning the printing roller, wherein two frames are symmetrically distributed outside the printing roller, and the cleaning device comprises a cleaning structure one, a pushing structure, an adjusting structure and a cleaning structure two.

[0007] The cleaning structure includes a multi-channel tube, a cleaning component, and a spray nozzle disposed above the printing roller. There are several spray nozzles, and the spray nozzles are fixed to the outer surface of the multi-channel tube. The cleaning component and the pushing structure are used in conjunction with each other.

[0008] The cleaning component includes a mounting base, on the side of the mounting base near the printing roller where a cleaning brush is fixed, and the mounting base has an internal cavity for storing liquid.

[0009] The nozzle includes an expansion tube, one end of which is fixed to a throat tube one, and the other end of the throat tube one is telescopically connected to a throat tube two. The expansion tube is fixedly connected to the lower surface of the multi-port pipe.

[0010] The adjustment structure includes a rotating shaft and a rotating seat rotatably disposed outside the frame. A swing arm is hinged to the outside of the rotating seat. A gravity block is fixed to the other end of the swing arm. A rotating sleeve and a sliding sleeve are sleeved on the outer surface of the rotating shaft. A connecting rod is hinged between the rotating sleeve and the swing arm. A linkage is provided between the bottom end of the rotating shaft and the printing roller. A connecting plate connected to the pushing structure is installed on the outer surface of the sliding sleeve.

[0011] By adopting the above-mentioned technical solution, this application can more thoroughly remove stains from the surface of the printing roller through the physical friction of the cleaning brush and the chemical action of the cleaning liquid, thereby improving the cleaning effect, ensuring the cleanliness of the printing roller, improving the printing quality, and reducing printing defects caused by stains on the roller surface. At the same time, the cleaning device is driven by the rotation of the printing roller itself, eliminating the need for an additional power source, thus automating the cleaning process, reducing manual operation, lowering labor intensity, and improving production efficiency.

[0012] Preferably, the printing roller is rotatably mounted between two frames, and support guide rods are detachably mounted on opposite sides of the two frames.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the support guide rod increases the rigidity of the entire printing equipment structure. During the high-speed rotation of the printing roller, a certain amount of vibration and centrifugal force will be generated. The support guide rod can effectively share and transmit these forces, reduce the deformation and shaking of the frame, thereby ensuring the rotational stability of the printing roller and improving the printing quality.

[0014] Preferably, the multi-channel tube is fixed between two frames, the mounting base has an arc-shaped groove inside that matches the outer surface of the printing roller, and the cleaning brush is fixed inside the arc-shaped groove.

[0015] The beneficial effects of adopting the above-mentioned further solution are: the arc-shaped groove of the mounting base is adapted to the outer surface of the printing roller, so that the cleaning brush can fit closely to the roller surface. The close fit ensures that the cleaning brush makes full contact with the roller surface during the cleaning process, which can effectively remove stains from various parts of the roller surface, including some tiny grooves and impurities in the texture. It avoids cleaning dead corners caused by gaps between the cleaning brush and the roller surface, and greatly improves the comprehensiveness and thoroughness of cleaning.

[0016] Preferably, there are two expansion tubes, which are fixed at one end of throat tube one and throat tube two, with the bottom expansion tube facing the printing roller. The outer surface of throat tube two is fixed with a mounting block that is fixed to the outer surface of the mounting base.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the design of the expansion tube can adjust the flow rate and pressure distribution of the cleaning liquid. When the cleaning liquid enters the expansion tube through the throat, the flow rate of the cleaning liquid will change due to the change in the tube diameter, forming a water flow with a certain impact force at the outlet of the expansion tube. This impact force helps to wash away stubborn stains on the surface of the roller, improving cleaning efficiency and quality. In particular, for some tightly attached inks, pigments and other impurities, the enhanced impact force can more effectively peel them off the surface of the printing roller.

[0018] Preferably, the pushing structure includes a push rod fixed to the upper surface of the mounting base and two slide blocks slidably sleeved on the outer surface of the support guide rod, with two symmetrically distributed push arms hinged between the two slide blocks and the mounting base.

[0019] The beneficial effects of adopting the above-mentioned further solution are: the two slide blocks are slidably sleeved on the outer surface of the support guide rod. Through the guiding action of the support guide rod, the slide blocks are ensured to maintain a straight trajectory during movement, avoiding deviation or shaking. The slide blocks also provide a stable mounting base for the push arm, disperse the stress generated during movement, and improve the overall stability of the structure.

[0020] Preferably, a water spray pipe is embedded inside the mounting base, and the bottom end of the push rod passes through the interior of the mounting base and communicates with the water spray pipe. The interior of the push rod is hollow.

[0021] The beneficial effects of adopting the above-mentioned further solution are as follows: the push rod is hollow inside and connected to the water spray pipe, forming a stable cleaning liquid delivery channel, ensuring that the cleaning liquid can be delivered directly and accurately from the liquid supply source to the designated location, reducing leakage and loss of the cleaning liquid during the delivery process, and improving the efficiency of the cleaning liquid. At the same time, by controlling the movement of the push rod, the spray pressure and flow rate of the cleaning liquid can be adjusted. When strong cleaning is required, the pushing force of the push rod can be increased to increase the spray pressure of the cleaning liquid, thereby more effectively washing away stubborn stains on the surface of the printing roller. When gentle cleaning is performed, the pushing force can be reduced to lower the spray pressure and avoid damage to the roller surface.

[0022] Preferably, the end of the connecting plate away from the sliding sleeve is connected and fixed to the top of the push rod, and a mounting bracket for supporting the rotating shaft is bolted to the outer surface of the frame on the left side. The rotating shaft passes through the interior of the mounting bracket and is connected to the bearing inside the mounting bracket.

[0023] The beneficial effects of adopting the above-mentioned further solution are: the connecting plate converts the linear motion of the sliding sleeve into the corresponding action of the push rod, forming a stable and precise power transmission link. When the sliding sleeve makes linear reciprocating motion under the action of the power source, the connecting plate can efficiently transmit this motion to the push rod, ensuring that the push rod moves according to the predetermined trajectory and speed, thereby driving the cleaning brush and spray roller in the cleaning structure one connected to it to perform precise cleaning of the printing roller.

[0024] Preferably, there are two swing arms and two connecting rods, and the two swing arms and two connecting rods are symmetrically arranged. The rotating sleeve is rotatably mounted on the outer surface of the sliding sleeve. The linkage includes a driven gear fixed to the bottom end of the rotating shaft. The driven gear is meshed with a transmission gear on its outside. The outer surface of the transmission gear is fixed with a linkage shaft that is fixed to the end of the printing roller.

[0025] The beneficial effects of adopting the above-mentioned further solution are: the two swing arms and two connecting rods are symmetrically arranged, which can form a mutually balanced force system during the movement. When the sliding sleeve moves in a straight line under the action of power, the symmetrical swing arms and connecting rods will convert this movement into the stable reciprocating motion of the push rod or related components, reducing the vibration and offset caused by uneven force on one side, making the movement of the entire cleaning mechanism more stable and reliable, ensuring the precise execution of cleaning actions, and improving the cleaning quality.

[0026] Preferably, the second cleaning structure includes two fixed seats disposed between the two slide seats. A piston cylinder and a connecting rod are respectively fixed between the two fixed seats. A piston block is slidably disposed inside the piston cylinder. The other end of the connecting rod extends into the piston cylinder and is fixed to the outer surface of the piston block. Two check valves are fixed to the outer surface of the piston cylinder. An infusion tube is fixed to one end of each of the two check valves. The two infusion tubes are respectively connected to the cavity and the top of the push rod.

[0027] The beneficial effects of adopting the above-mentioned further solution are: by adjusting the movement speed and amplitude of the push rod, the sliding speed and stroke of the piston block in the piston cylinder can be indirectly controlled, thereby achieving precise control of the cleaning fluid flow rate. When deep cleaning of the printing roller is required, the movement speed and depth of the push rod can be increased to increase the amount of cleaning fluid delivered. When performing routine cleaning, the movement speed and depth of the push rod can be reduced to decrease the amount of cleaning fluid delivered, so as to meet different cleaning needs.

[0028] Preferably, the outer surface of the support guide rod is detachably equipped with a detection structure for detecting the printing roller. The detection structure includes a wheel frame, an elastic telescopic rod fixed to the upper surface of the wheel frame and fixed to the outer surface of the support guide rod, an abutting roller that abuts against the outer surface of one end of the printing roller is installed on the inner bearing of the wheel frame, and a pressure sensing module is installed inside the elastic telescopic rod.

[0029] The beneficial effects of adopting the above-mentioned further solution are: the contact roller is in direct contact with the surface of the printing roller, which can sense the roundness error, surface defects or running vibration of the roller in real time. The pressure sensing module built into the elastic telescopic rod can quantify the contact pressure between the roller and the roller and transmit the data to the control system. By setting the pressure threshold, it can automatically determine whether the roller is abnormally contacted due to wear or whether the pressure is suddenly increased due to foreign objects stuck in it, so as to realize early warning of faults. At the same time, it can also inspect the printing roller after cleaning.

[0030] The present invention has at least the following beneficial effects: 1. The cleaning liquid of the present invention is distributed to multiple nozzles through a multi-pass pipe. The expansion tube at the end of the nozzle adjusts the spray angle through the extension and retraction of throat one and throat two, directly rinsing the surface of the printing roller. Then, the cleaning brush fits the roller surface through the arc groove of the mounting base. Combined with the cleaning liquid in the liquid storage cavity, it achieves dual cleaning of physical brushing and liquid rinsing.

[0031] When the cleaning brush is in contact with the roller surface, the second throat extends outward along with the mounting block, so that the spray direction of the nozzle is automatically aligned with the contact area between the brush bristles and the roller. Furthermore, after the throat is extended, the tapering structure of the expansion tube accelerates the fluid, increasing the spray speed and enhancing the scouring force under the same pump pressure.

[0032] This invention utilizes the physical friction of the cleaning brush and the chemical action of the cleaning solution to more thoroughly remove stains from the surface of the printing roller, improving the cleaning effect, ensuring the cleanliness of the printing roller, thereby improving printing quality and reducing printing defects caused by stains on the roller surface. Simultaneously, the cleaning device is driven by the rotation of the printing roller itself, eliminating the need for an additional power source, thus automating the cleaning process, reducing manual operation, lowering labor intensity, and improving production efficiency. Furthermore, the automatic delivery and spraying of the cleaning solution is achieved through the cooperation of the piston cylinder and check valve, with a stable and reliable delivery process that ensures the cleaning solution is evenly sprayed onto the surface of the printing roller, improving the consistency of the cleaning effect.

[0033] When the printing roller speed increases, the linkage drives the rotating shaft to rotate faster, increasing the centrifugal force of the gravity block. This, in turn, pushes the sliding sleeve outward via the connecting rod, further extending the second throat and increasing the brush pressure. With the throat extended, the cleaning liquid has a longer acceleration distance when sprayed from the end of the nozzle, allowing the water flow to accelerate more fully within the pipe. This results in a higher speed impact on the printing roller surface, which not only ensures a more even coverage of the cleaning liquid on the roller surface but also enhances the impact of the cleaning liquid on stubborn stains. This effectively removes tightly adhered inks, pigments, and other impurities, improving the cleaning effect and meeting the demands of high-speed cleaning. Attached Figure Description

[0034] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0035] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0036] Figure 2 This is a schematic diagram of the frame structure in this invention.

[0037] Figure 3 This is a schematic diagram of the cleaning structure one in this invention.

[0038] Figure 4 This is a schematic diagram of the cleaning component in this invention.

[0039] Figure 5 This is a schematic diagram of the nozzle structure in this invention.

[0040] Figure 6 This is a schematic diagram of the pushing structure in this invention.

[0041] Figure 7 This is a schematic diagram of the structure after the push structure is installed in this invention.

[0042] Figure 8 This is a schematic diagram of the adjustment structure in this invention.

[0043] Figure 9 This is a schematic diagram of the cleaning structure two in this invention.

[0044] Figure 10 This is a schematic diagram of the detection structure in this invention.

[0045] In the diagram, 1. Frame; 11. Support guide rod; 2. Printing roller; 3. Cleaning structure one; 301. Multi-port pipe; 302. Cleaning component; 3021. Mounting base; 3022. Cleaning brush; 3023. Cavity; 303. Spray nozzle; 3031. Expansion tube; 3032. Throat one; 3033. Throat two; 3034. Mounting block; 4. Pushing structure; 401. Push rod; 402. Slide; 403. Push arm; 5. Adjusting structure; 501. Mounting bracket; 502. Rotating shaft; 5 03. Rotating seat; 504. Swing arm; 505. Gravity block; 506. Rotating sleeve; 507. Connecting rod; 508. Sliding sleeve; 509. Driven gear; 510. Transmission gear; 511. Linkage shaft; 512. Connecting plate; 6. Cleaning structure two; 601. Fixed seat; 602. Piston cylinder; 603. Piston block; 604. Connecting rod; 605. Check valve; 606. Infusion tube; 7. Detection structure; 701. Wheel frame; 702. Elastic telescopic rod; 703. Abutment roller. Detailed Implementation

[0046] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0047] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0048] like Figures 1-10 As shown, the digital inkjet printing roller cleaning mechanism provided in this embodiment includes a cleaning device for cleaning the printing roller 2. Two symmetrically distributed frames 1 are arranged outside the printing roller 2, and the printing roller 2 is rotatably mounted between the two frames 1. Support guide rods 11 are detachably installed on opposite sides of the two frames 1. The support guide rods 11 increase the rigidity of the entire printing equipment structure. During the high-speed rotation of the printing roller 2, certain vibrations and centrifugal forces are generated. The support guide rods 11 can effectively distribute and transmit these forces, reducing the deformation and swaying of the frames 1, thereby ensuring the rotational stability of the printing roller 2 and improving the printing quality.

[0049] In this embodiment, the cleaning device includes a first cleaning structure 3, a pushing structure 4, an adjusting structure 5, and a second cleaning structure 6. Specifically, the first cleaning structure 3 includes a multi-channel pipe 301, a cleaning component 302, and a spray pipe 303 disposed above the printing roller 2. There are several spray pipes 303, and the spray pipes 303 are fixed to the outer surface of the multi-channel pipe 301. The cleaning component 302 and the pushing structure 4 cooperate with each other. The cleaning component 302 includes a mounting base 3021. A cleaning brush 3022 is fixed on the side of the mounting base 3021 near the printing roller 2. A liquid storage cavity 3023 is opened inside the mounting base 3021. A drain pipe and a liquid inlet pipe communicating with the liquid storage cavity 3023 are installed on the side wall of the mounting base 3021. The nozzle 303 includes an expansion tube 3031, one end of which is fixed with a throat 3032, and the other end of the throat 3032 is telescopically connected to a throat 3033. The expansion tube 3031 is fixedly connected to the lower surface of the multi-port pipe 301. Through the physical friction of the cleaning brush 3022 and the chemical action of the cleaning liquid, the stains on the surface of the printing roller 2 can be removed more thoroughly, improving the cleaning effect and ensuring the cleanliness of the printing roller 2, thereby improving the printing quality and reducing printing defects caused by stains on the roller surface. At the same time, the cleaning device is driven by the rotation of the printing roller 2 itself, without the need for an additional power source, realizing the automation of the cleaning process, reducing manual operation, reducing labor intensity, and improving production efficiency.

[0050] In this embodiment, the multi-port pipe 301 is fixed between the two frames 1. The mounting base 3021 has an arc-shaped groove inside that matches the outer surface of the printing roller 2, and the cleaning brush 3022 is fixed inside the arc-shaped groove. The arc-shaped groove of the mounting base 3021 matches the outer surface of the printing roller 2, allowing the cleaning brush 3022 to fit tightly against the roller surface. This tight fit ensures that the cleaning brush 3022 makes full contact with the roller surface during cleaning, effectively removing stains from various parts of the roller surface, including some fine grooves and impurities in the texture. This avoids cleaning dead corners caused by gaps between the cleaning brush 3022 and the surface of the printing roller 2, greatly improving the comprehensiveness and thoroughness of cleaning.

[0051] It should be noted that there are two expansion tubes 3031. The two expansion tubes 3031 are fixed at one end of the throat tube 1 3032 and throat tube 2 3033, with the bottom expansion tube 3031 facing the printing roller 2. A mounting block 3034, which is fixed to the outer surface of the mounting base 3021, is fixed to the outer surface of the throat tube 2 3033. The design of the expansion tubes 3031 allows for adjustment of the flow rate and pressure distribution of the cleaning liquid. When the cleaning liquid enters the expansion tubes 3031 through the throat tubes 1 3032 and 2 3033, the flow rate of the cleaning liquid changes due to the change in pipe diameter, forming a water flow with a certain impact force at the outlet of the expansion tubes 3031. This impact force helps to wash away stubborn stains on the roller surface, improving cleaning efficiency and quality. Especially for tightly adhered impurities such as ink and pigments, the enhanced impact force can more effectively peel them off the surface of the printing roller 2.

[0052] The combined structure of two expansion tubes 3031 with throat one 3032 and throat two 3033 can better disperse stress during the cleaning process. When the cleaning fluid flows inside the pipes and is sprayed onto the roller surface, a certain reaction force is generated. The presence of expansion tubes 3031 allows these forces to be distributed more evenly throughout the structure, avoiding component damage or deformation caused by localized stress concentration. At the same time, the mounting block 3034 fixes the outer surface of throat two 3033 to the outer surface of the mounting base 3021, further enhancing the stability of the entire structure and ensuring that the cleaning mechanism maintains a stable working state during operation.

[0053] In this embodiment, the pushing structure 4 includes a push rod 401 fixed to the upper surface of the mounting base 3021 and two slide blocks 402 slidably sleeved on the outer surface of the support guide rod 11. Two symmetrically distributed push arms 403 are hinged between the two slide blocks 402 and the mounting base 3021. The two push arms 403 are symmetrically hinged between the slide blocks 402 and the mounting base 3021, forming a stable triangular mechanical structure. When the push rod 401 drives the slide blocks 402 to move, the symmetrically distributed push arms 403 convert the linear motion into the lifting or translating motion of the mounting base 3021, while balancing the lateral force and torque generated during the movement, reducing structural deformation or vibration caused by uneven force. A sprinkler pipe is embedded inside the mounting base 3021, and the bottom end of the push rod 401 penetrates the interior of the mounting base 3021 and communicates with the sprinkler pipe. The push rod 401 is hollow inside. The water spray pipe is embedded inside the mounting base 3021, with the push rod 401 passing through it. This design makes full use of the space in the mounting base 3021, making the entire cleaning mechanism more compact. It reduces the space occupied by the equipment in the horizontal and vertical directions, which is beneficial for the installation and layout of the equipment in limited working environments.

[0054] It should be noted that the push rod 401 is hollow inside and connected to the water spray pipe, forming a stable cleaning fluid delivery channel. This design ensures that the cleaning fluid can be delivered directly and accurately from the supply source to the designated location, reducing leakage and loss of the cleaning fluid during delivery and improving the efficiency of cleaning fluid use. Simultaneously, by controlling the movement of the push rod 401, the spray pressure and flow rate of the cleaning fluid can be adjusted. When strong cleaning is required, the pushing force of the push rod 401 can be increased, increasing the spray pressure of the cleaning fluid, thereby more effectively rinsing away stubborn stains on the surface of the printing roller 2. When performing gentle cleaning, the pushing force can be reduced, lowering the spray pressure and avoiding damage to the roller surface. Furthermore, by adjusting the stroke length of the push rod 401, the movement range of the mounting base 3021 and related components can be precisely controlled. For example, in the cleaning mechanism, the stroke of the push rod 401 can be adjusted according to the diameter of the printing roller 2 and the cleaning requirements to maintain the optimal contact distance between the cleaning components and the surface of the printing roller 2, improving the cleaning effect.

[0055] In this embodiment, the adjustment structure 5 includes a rotating shaft 502 and a rotating seat 503 rotatably disposed outside the frame 1. A swing arm 504 is hinged to the outside of the rotating seat 503, and a gravity block 505 is fixed to the other end of the swing arm 504. A rotating sleeve 506 and a sliding sleeve 508 are sleeved on the outer surface of the rotating shaft 502. A connecting rod 507 is hinged between the rotating sleeve 506 and the swing arm 504. A linkage is provided between the bottom end of the rotating shaft 502 and the printing roller 2. A connecting plate 512 connected to the push structure 4 is installed on the outer surface of the sliding sleeve 508. Specifically, the end of the connecting plate 512 away from the sliding sleeve 508 is connected and fixed to the top end of the push rod 401. A mounting bracket 501 supporting the rotating shaft 502 is bolted to the outer surface of the left side of the frame 1. The rotating shaft 502 passes through the interior of the mounting bracket 501, and the rotating shaft 502 is connected to the bearing inside the mounting bracket 501. The connecting plate 512 converts the linear motion of the sliding sleeve 508 into the corresponding action of the push rod 401, forming a stable and precise power transmission link. When the sliding sleeve 508 performs linear reciprocating motion under the action of the power source, the connecting plate 512 can efficiently transmit this motion to the push rod 401, ensuring that the push rod 401 moves according to the predetermined trajectory and speed, thereby driving the cleaning brush and spray roller in the connected cleaning structure one to precisely clean the printing roller 2.

[0056] It should be noted that there are two swing arms 504 and two connecting rods 507, and the two swing arms 504 and two connecting rods 507 are symmetrically arranged. The rotating sleeve 506 is rotatably mounted on the outer surface of the sliding sleeve 508. The linkage includes a driven gear 509 fixed to the bottom end of the rotating shaft 502. The driven gear 509 is externally meshed with a transmission gear 510. The outer surface of the transmission gear 510 is fixed with a linkage shaft 511 fixed to the end of the printing roller 2. By symmetrically arranging the two swing arms 504 and two connecting rods 507, a mutually balanced force system can be formed during the movement. When the sliding sleeve 508 moves linearly under the action of power, the symmetrical swing arms 504 and connecting rods 507 will convert this movement into a stable reciprocating motion of the push rod 401 or related components, reducing vibration and offset caused by uneven force on one side, making the movement of the entire cleaning mechanism more stable and reliable, ensuring accurate execution of cleaning actions, and improving cleaning quality. A limiting plate for limiting the rotation shaft 502 is fixed on the top side of the mounting bracket 501.

[0057] To further improve the cleaning effect, the second cleaning structure 6 includes two fixed seats 601 positioned between two sliding seats 402. A piston cylinder 602 and a connecting rod 604 are fixed between the two fixed seats 601. A piston block 603 is slidably disposed inside the piston cylinder 602. One end of the connecting rod 604 extends into the piston cylinder 602 and is fixed to the outer surface of the piston block 603. One end of the connecting rod 604 is connected to the fixed seat 601, and the other end extends into the piston cylinder 602 and is fixed to the outer surface of the piston block 603. When the push rod 401 moves, it drives the connecting rod 604 to reciprocate through relevant transmission components, thereby causing the piston block 603 to slide within the piston cylinder 602. This reciprocating motion design provides a power source for the delivery of cleaning fluid, and its simple structure and ease of implementation can meet the different needs of the equipment for delivering cleaning fluid. Two check valves 605 are fixed to the outer surface of the piston cylinder 602. Each check valve 605 has a delivery pipe 606 fixed to one end, and the two delivery pipes 606 are respectively connected to the cavity 3023 and the top of the push rod 401. By adjusting the movement speed and amplitude of the push rod 401, the sliding speed and stroke of the piston block 603 within the piston cylinder 602 can be indirectly controlled, thereby achieving precise control of the cleaning fluid flow rate. When deep cleaning of the printing roller 2 is required, the movement speed and depth of the push rod 401 can be increased to increase the amount of cleaning fluid delivered. When performing routine cleaning, the movement speed and depth of the push rod 401 can be reduced to decrease the amount of cleaning fluid delivered, thus meeting different cleaning needs.

[0058] It should be noted that the linkage design between the cleaning structure 26, the push rod 401, and related transmission components ensures that the delivery of the cleaning fluid is coordinated with the overall movement of the cleaning mechanism. When the push rod 401 drives the cleaning components to clean the printing roller 2, the cleaning fluid can be delivered to the cleaning area in a timely and accurate manner, improving the collaborative working ability of the cleaning mechanism and ensuring the smooth progress of the cleaning work.

[0059] In this embodiment, a detection structure 7 for detecting the printing roller 2 is detachably installed on the outer surface of the support guide rod 11. The detection structure 7 includes a wheel frame 701, an elastic telescopic rod 702 fixed to the outer surface of the support guide rod 11 on the upper surface of the wheel frame 701, and an abutting roller 703 abutting against the outer surface of one end of the printing roller 2 on the inner bearing of the wheel frame 701. A pressure sensing module is installed inside the elastic telescopic rod 702. By directly contacting the surface of the printing roller 2 with the abutting roller 703, the roundness error, surface defects, or running vibration of the roller can be sensed in real time. The pressure sensing module built into the elastic telescopic rod 702 can quantify the contact pressure between the roller and the roller and transmit the data to the control system. By setting a pressure threshold, it can automatically determine whether the roller has abnormal contact force due to wear or a sudden increase in pressure due to foreign object jamming, realizing early warning of faults. At the same time, it can also detect the printing roller 2 after cleaning.

[0060] like Figures 1-10 As shown, the principle of the digital inkjet printing roller cleaning mechanism provided in this embodiment is as follows: First, the cleaning liquid is distributed to multiple nozzles 303 through the multi-port pipe 301. The expansion pipe 3031 at the end of the nozzle 303 adjusts the spray angle through the extension and retraction of the first throat pipe 3032 and the second throat pipe 3033, directly rinsing the surface of the printing roller 2. The arc-shaped groove of the mounting base 3021 fits against the surface of the printing roller 2, realizing dual cleaning of physical brushing and liquid rinsing.

[0061] When the printing roller 2 increases its speed, it drives the transmission gear 510 on the linkage shaft 511 to rotate, which in turn drives the driven gear 509 to rotate. The driven gear 509 drives the rotating shaft 502 to rotate on the mounting bracket 501. When the rotating shaft 502 rotates, the rotating sleeve 506 rotates with the rotating shaft 502, and drives the swing arm 504 to swing on the rotating seat 503 through the connecting rod 507. The swing arm 504 drives the sliding sleeve 508 to slide on the rotating shaft 502. The sliding sleeve 508 drives the push rod 401 to move up and down through the connecting plate 512. When the push rod 401 drives the mounting seat 3021 to move down, the cleaning brush 3022 cleans the surface of the printing roller 2. At the same time, the multi-channel pipe 301 sprays cleaning liquid onto the surface of the printing roller 2 through the spray pipe 303, realizing dual cleaning of physical brushing and liquid rinsing.

[0062] When the mounting base 3021 moves downward, it drives the two sliding blocks 402 to move relative to each other through the two push arms 403, thereby causing the piston block 603 to slide inside the piston cylinder 602. When the piston block 603 moves upward, it draws external cleaning fluid into the piston cylinder 602 through a check valve 605. When the piston block 603 moves downward, it pumps cleaning fluid into the cavity 3023 and the top of the push rod 401 through another check valve 605, and then sprays it out through the water spray pipe, thereby spraying the agent onto the outer surface of the printing roller 2. This achieves dual cleaning synergy and can more comprehensively and thoroughly remove various stains from the surface of the printing roller 2.

[0063] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limiting." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

Claims

1. A digital inkjet printing roller cleaning mechanism, comprising a cleaning device for cleaning the printing roller (2), characterized in that, The printing roller (2) is provided with two symmetrically distributed frames (1) on its exterior. The cleaning device includes a first cleaning structure (3), a pushing structure (4), an adjusting structure (5), and a second cleaning structure (6). The cleaning structure 1 (3) includes a multi-pass tube (301), a cleaning component (302) and a spray pipe (303) disposed above the printing roller (2). There are several spray pipes (303), and the spray pipes (303) are fixed on the outer surface of the multi-pass tube (301). The cleaning component (302) and the pushing structure (4) are used in cooperation with each other. The cleaning component (302) includes a mounting base (3021), a cleaning brush (3022) is fixed on the side of the mounting base (3021) near the printing roller (2), and a liquid storage cavity (3023) is opened inside the mounting base (3021). The nozzle (303) includes an expansion tube (3031), one end of which is fixed with a throat tube (3032), and the other end of the throat tube (3032) is telescopically connected to a throat tube (3033). The expansion tube (3031) is fixedly connected to the lower surface of the multi-port tube (301). The adjustment structure (5) includes a rotating shaft (502) and a rotating seat (503) rotatably disposed outside the frame (1). A swing arm (504) is hinged to the outside of the rotating seat (503). A gravity block (505) is fixed to the other end of the swing arm (504). A rotating sleeve (506) and a sliding sleeve (508) are sleeved on the outer surface of the rotating shaft (502). A connecting rod (507) is hinged between the rotating sleeve (506) and the swing arm (504). A linkage is provided between the bottom end of the rotating shaft (502) and the printing roller (2). A connecting plate (512) connected to the pushing structure (4) is installed on the outer surface of the sliding sleeve (508). The two frames (1) are detachably mounted with support guide rods (11) on opposite sides; the push structure (4) includes a push rod (401) fixed to the upper surface of the mounting base (3021) and two slides (402) slidably sleeved on the outer surface of the support guide rods (11), and two push arms (403) are symmetrically distributed between the two slides (402) and the mounting base (3021). The number of swing arms (504) and connecting rods (507) are two, and the two swing arms (504) and two connecting rods (507) are symmetrically arranged. The rotating sleeve (506) is rotatably mounted on the outer surface of the sliding sleeve (508). The linkage includes a driven gear (509) fixed to the bottom end of the rotating shaft (502). The driven gear (509) is meshed with a transmission gear (510). The outer surface of the transmission gear (510) is fixed with a linkage shaft (511) fixed to the end of the printing roller (2). The second cleaning structure (6) includes two fixed seats (601) respectively set on the two slides (402). A piston cylinder (602) and a connecting rod (604) are fixed between the two fixed seats (601). A piston block (603) is slidably arranged inside the piston cylinder (602). The other end of the connecting rod (604) extends into the piston cylinder (602) and is fixed to the outer surface of the piston block (603). Two check valves (605) are fixed to the outer surface of the piston cylinder (602). An infusion tube (606) is fixed to one end of each of the two check valves (605). The two infusion tubes (606) are respectively connected to the cavity (3023) and the top of the push rod (401). The end of the connecting plate (512) away from the slide sleeve (508) is connected and fixed to the top of the push rod (401).

2. The digital inkjet printing roller cleaning mechanism according to claim 1, characterized in that: The printing roller (2) is rotatably mounted between two frames (1).

3. The digital inkjet printing roller cleaning mechanism according to claim 1, characterized in that: The multi-port pipe (301) is fixed between two frames (1), and the mounting base (3021) has an arc-shaped groove inside that is adapted to the outer surface of the printing roller (2), and the cleaning brush (3022) is fixed inside the arc-shaped groove.

4. The digital inkjet printing roller cleaning mechanism according to claim 1, characterized in that: There are two expansion tubes (3031). The two expansion tubes (3031) are fixed at the ends of the throat tube one (3032) and throat tube two (3033) that are separated from each other. The bottom expansion tube (3031) faces the printing roller (2). The outer surface of the throat tube two (3033) is fixed with a mounting block (3034) that is fixed to the outer surface of the mounting base (3021).

5. The digital inkjet printing roller cleaning mechanism according to claim 1, characterized in that: The mounting base (3021) is equipped with a sprinkler pipe, and the bottom end of the push rod (401) passes through the interior of the mounting base (3021) and communicates with the sprinkler pipe. The interior of the push rod (401) is hollow.

6. The digital inkjet printing roller cleaning mechanism according to claim 5, characterized in that: The outer surface of the frame (1) on the left is bolted with a mounting bracket (501) that supports the rotating shaft (502). The rotating shaft (502) passes through the interior of the mounting bracket (501) and is connected to the bearing inside the mounting bracket (501).

7. The digital inkjet printing roller cleaning mechanism according to claim 2, characterized in that: The outer surface of the support guide rod (11) is detachably equipped with a detection structure (7) for detecting the printing roller (2). The detection structure (7) includes a wheel frame (701). An elastic telescopic rod (702) fixed to the outer surface of the support guide rod (11) is fixed on the upper surface of the wheel frame (701). An abutting roller (703) that abuts against the outer surface of one end of the printing roller (2) is installed on the inner bearing of the wheel frame (701). A pressure sensing module is installed inside the elastic telescopic rod (702).

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