CN115817025A - Ink recycling system and control method thereof - Google Patents
Ink recycling system and control method thereof Download PDFInfo
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- CN115817025A CN115817025A CN202211658675.6A CN202211658675A CN115817025A CN 115817025 A CN115817025 A CN 115817025A CN 202211658675 A CN202211658675 A CN 202211658675A CN 115817025 A CN115817025 A CN 115817025A
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Abstract
The invention is suitable for the technical field of circuit board jet printing, and particularly relates to an ink recycling system and a control method thereof, wherein the ink recycling system comprises a primary ink box and a secondary ink box; the ink outlet of the first-stage ink box is connected with the ink inlet of the second-stage ink box through a pipeline, and a first filter and a first pump are sequentially arranged between the pipelines connected with the first-stage ink box and the second-stage ink box along the flowing direction of ink; an ink outlet of the second-stage ink box is connected with an ink inlet of the spray head through a pipeline, and a second filter is arranged between the second-stage ink box and the pipeline connected with the spray head; the ink outlet of the spray head is connected with the ink inlet of the first-stage ink box through a pipeline, and a valve is arranged between the pipeline connecting the spray head and the first-stage ink box. The invention is provided with a first-stage ink box, a second-stage ink box stores ink and controls the ink to flow into a spray head; when the ink of the nozzle is discharged, the ink flows back to the first-stage ink box from the nozzle, so that the ink is recycled.
Description
Technical Field
The invention belongs to the technical field of circuit board jet printing, and particularly relates to a printing ink recycling system and a control method thereof.
Background
The existing circuit board production process comprises a circuit board spray printing link. The jet printing adopts a mode of filling ink into a fine nozzle and extruding the ink out. When the nozzle operates, quantitative ink is left in the nozzle. The main component of the ink used for jet printing is titanium dioxide or other similar micro molecules. If the residual ink in the nozzle is not consumed and replaced for a long time, the ink in the nozzle can generate an agglomeration effect, and the agglomerated ink forms larger molecules to block the small ink outlet holes of the nozzle.
In order to prevent the head from being clogged, it is necessary to discharge the ink in the head at intervals of, for example, ten minutes, and this operation is called squeegeeing. Under the condition that the amount of the ink ejected by the nozzle is small, the proportion of the ink ejected by the ink pressing operation to the total ink consumption of the operation is greatly improved. The ink pressed out by the ink pressing operation is not utilized, resulting in increased ink loss.
At present, the discharged ink in the ink pressing operation is not effectively recycled, so that the ink is lost.
Disclosure of Invention
The embodiment of the invention aims to provide an ink recycling system and a control method thereof, and aims to solve the problem that the ink discharged by the ink pressing operation is not effectively recycled at present, so that the ink is lost.
The embodiment of the invention is realized in such a way that the ink recycling system comprises a first-stage ink box and a second-stage ink box;
the ink outlet of the first-stage ink box is connected with the ink inlet of the second-stage ink box through a pipeline, and a first filter and a first pump are sequentially arranged between the pipelines connected with the first-stage ink box and the second-stage ink box along the flowing direction of ink;
an ink outlet of the second-stage ink box is connected with an ink inlet of the spray head through a pipeline, and a second filter is arranged between the second-stage ink box and the pipeline connected with the spray head; the ink outlet of the spray head is connected with the ink inlet of the first-stage ink box through a pipeline, and a valve is arranged between the pipeline connecting the spray head and the first-stage ink box.
Another object of an embodiment of the present invention is to provide a method for controlling an ink recycling system, which is applied to the ink recycling system of the present invention, and includes:
conveying the ink of the first-stage ink box to the second-stage ink box;
controlling the ink flow of the secondary ink box to the nozzle through the positive and negative pressure device, closing the nozzle for a set time t1 so as to flush the nozzle, and enabling the ink for flushing the nozzle to flow back to the primary ink box through the ink outlet of the nozzle;
placing a spray head above an ink absorption port of the third-level ink box, opening the spray head for a set time period t2 to enable ink to be extruded through an ink jet port and flow into the third-level ink box, and enabling the ink collected by the third-level ink box to flow back to the first-level ink box through an ink outlet of the third-level ink box through a pipeline;
closing the spray head, moving the spray head above the ink absorption nozzle to be attached to the ink absorption nozzle, starting the ink absorption nozzle to absorb residual ink on the surface of the spray head, and enabling the absorbed ink to enter a four-stage ink box; and the ink in the four-stage ink box is driven by the second pump to flow back to the first-stage ink box through the ink outlet of the four-stage ink box.
The ink recycling system provided by the invention is provided with a primary ink box as a main container for storing ink, and the container can be used for storing the recycled ink besides the ink in the working process of the storage system; setting a secondary ink box as a container for temporarily storing ink, and controlling the ink to flow into a nozzle from the secondary ink box through a positive pressure system and a negative pressure system; when the nozzle discharges the ink, the discharged ink flows back to the first-stage ink box through the ink outlet of the nozzle, so that the ink is recycled.
Drawings
FIG. 1 is a schematic diagram of an ink recycling system according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of a three-stage ink cartridge;
FIG. 3 is a back view of the upper cover of the three-stage ink cartridge.
In the drawings: 1. a first-stage ink box; 2. a first filter; 3. a first pump; 4. a secondary ink box; 5. a second filter; 6. a spray head; 7. a valve; 8. a positive and negative pressure system; 9. an air bottle; 10. an upper cover of the three-stage ink box; 11 ink suction nozzles; 12. a third-stage ink box main body; 13. a third-stage ink box bottom cover; 14. a vacuum filter; 15. a vacuum generator; 16. a four-stage ink box; 17. a negative pressure gauge; 18. a third filter; 19. and a second pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1 to 3, an embodiment of the present invention provides an ink recycling system including a primary ink cartridge 1 and a secondary ink cartridge 4;
an ink outlet of the primary ink box 1 is connected with an ink inlet of the secondary ink box 4 through a pipeline, and a filter I2 and a pump I3 are sequentially arranged between the pipelines connected with the primary ink box 1 and the secondary ink box 4 along the ink flowing direction;
an ink outlet of the second-stage ink box 4 is connected with an ink inlet of the spray head 6 through a pipeline, and a second filter 5 is arranged between the pipelines connected with the second-stage ink box 4 and the spray head 6; an ink outlet of the spray head 6 is connected with an ink inlet of the first-level ink box 1 through a pipeline, and a valve 7 is arranged between the spray head 6 and the pipeline connected with the first-level ink box 1.
In this embodiment, the primary ink cartridge 1 is a main storage device for storing ink, and a large amount of ink in the whole system is stored in the primary ink cartridge 1, and the device is a closed device and has an ink outlet, an ink inlet, and an ink replenishing port.
In this embodiment, the first filter 2 is a fine filter device for filtering impurities and agglomerated ink macromolecules in the ink transferred from the first ink cartridge 1 to the second ink cartridge 4 through an internal fine filter screen.
In this embodiment, the first pump 3 is an ink delivery pump that draws ink from the primary cartridge 1, through the first filter 2, and then through a conduit to the secondary cartridge 4 when the device is operating.
In this embodiment, the secondary ink tank 4 is a small ink storage device, and is used for real-time ink replenishment during operation of the head 6. When the amount of ink stored in the secondary ink tank 4 is less than a predetermined amount, the first pump 3 of the primary ink tank 1 is activated to replenish the ink in the secondary ink tank 4 to maintain the amount of ink stored in the secondary ink tank 4.
In this embodiment, the second filter 5 is a fine filtering device for filtering impurities and agglomerated ink in the ink flowing from the secondary ink cartridge 4 to the head 6.
In this embodiment, the valve 7 between the head 6 and the primary ink tank 1 is used to control whether the ink in the head 6 flows back into the primary ink tank 1. When the spray head 6 works normally, the valve 7 is closed, and ink in the spray head 6 can only come out from the ink outlet, so that the normal operation of the spray head 6 is not influenced; when the nozzle 6 is flushed with ink, the valve 7 is opened, and the ink in the nozzle 6 is pressed out from the ink outlet by the pressure inside the nozzle 6 and then pressed back into the primary ink tank 1 through the pipeline.
As a preferred embodiment of the invention, the air hole at the upper part of the main body of the secondary ink box 4 is connected with the positive and negative pressure system 8 through a pipeline; the positive-negative pressure system 8 is used for forming positive pressure or negative pressure in the secondary ink box 4, and when the positive pressure is formed, the ink in the main body of the secondary ink box 4 is conveyed to the spray head 6; when the negative pressure is formed, the ink in the main body of the secondary ink tank 4 stops being output to the ejection head 6.
In this embodiment, the air hole of the secondary ink tank 4 is connected to the air tank 9, and the other air hole of the air tank 9 is connected to the positive/negative pressure system 8. The positive and negative pressure system 8 controls the air input and output in the secondary ink box 4 to form positive and negative pressure in the secondary ink box 4. The positive-negative pressure system 8 controls whether the ink in the secondary ink tank 4 flows to the ejection head 6 by controlling the pressure in the secondary ink tank 4. When a pressure of about-5 Pa is applied to the inside of the secondary ink tank 4, the liquid in the secondary ink tank 4 is sucked by the negative pressure and does not flow to the head 6. When positive pressure is applied to the secondary ink tank 4, ink in the secondary ink tank 4 flows from the ink outlet of the secondary ink tank 4 to the nozzle 6 through the second filter 5 under the action of the pressure.
As a preferred embodiment of the present invention, the ink recovery recycling system further includes a three-stage ink cartridge; the three-stage ink box is positioned right below the ink flushing position of the spray head 6 and is used for collecting the flushing ink discharged by the spray head 6, and the ink outlet of the three-stage ink box is connected with the ink inlet of the first-stage ink box 1 through a pipeline.
In this embodiment, the third-level ink cartridge is a temporary storage device for collecting ink, when ink is discharged from the ink jet hole of the head 6, the ink flows from the collecting hole of the third-level ink cartridge to the inside of the third-level ink cartridge under the action of gravity, the bottom of the third-level ink cartridge has an ink outlet, the ink outlet is connected with the ink inlet of the first-level ink cartridge 1 through a pipeline, and the collected ink can flow back to the first-level ink cartridge 1 through the pipeline.
As a preferred embodiment of the present invention, the ink recycling system is characterized in that the tertiary ink cartridge upper cover 10 is provided with a V-shaped groove matching with the position of the nozzle 6, and the bottom of the V-shaped groove is provided with an opening; the upper surface of the V-shaped groove is provided with a Teflon coating.
In this embodiment, the V-shaped groove can make the liquid better converge and flow to the third-level ink box. Meanwhile, the bottom of the V-shaped groove is narrowed to effectively block light, the ink used in the operation is usually a photosensitive material, and the quality of the recovered ink can be improved by reducing the irradiation of the light.
In this embodiment, the teflon coating on the V-shaped groove is an oleophobic coating, which can prevent the ink from sticking on the V-shaped groove, and make the ink better converge and flow into the three-level ink box.
As a preferred embodiment of the invention, a plurality of ink suction nozzles 11 are arranged inside the three-stage ink box; the upper cover 10 of the tertiary ink box is also provided with an ink absorption opening opposite to the spray head 6; the upper part of the ink suction nozzle 11 penetrates out of the ink suction opening; the lower part of the ink suction nozzle 11 is connected with the three-stage ink box bottom cover 13 through a spring.
In this embodiment, the tertiary cartridge upper cover 10 is provided with an ink absorbing opening from which the ink absorbing nozzle 11 can be brought into contact with the nozzle to absorb ink remaining on the nozzle surface; the position of the opening is opposite to the head 6, allowing the head 6 to be more easily moved to the position of the suction nozzle 11 after the flushing operation.
In this embodiment, the lower portion of the ink nozzle 11 is connected to the tertiary ink tank bottom cover 13 by a spring device, so that the ink nozzle 11 can be better attached to the surface of the head 6 by the elasticity of the spring.
As a preferred embodiment of the present invention, the ink recycling system further includes a four-stage ink cartridge 16; the ink outlet of the four-stage ink box 16 is connected with the ink inlet of the first-stage ink box 1; the ink inlet of the four-stage ink box 16 is connected with the suction nozzle.
In this embodiment, the fourth stage ink cartridge 16 serves as a temporary storage for ink collected after the third stage ink cartridge; the four-stage ink cartridge 16 is used for storing ink sucked by the suction nozzle.
As a preferred embodiment of the present invention, a third filter 18 and a second pump 19 are sequentially disposed along the ink flowing direction between the conduits connecting the ink outlet of the fourth stage ink cartridge 16 and the ink inlet of the first stage ink cartridge 1; the four-stage ink box 16 is provided with an air outlet, and the air outlet of the four-stage ink box 16 is connected with the vacuum generator 15 through a pipeline.
In this embodiment, the air outlet of the four-stage ink box 16 is connected to the vacuum generator 15 through a pipeline, and the vacuum generator 15 can provide a stable negative pressure, for example-20 kpa, for the inside of the four-stage ink box 16; the ink inlet of the four-stage ink box 16 is connected with the suction nozzle by hanging, and the negative pressure is transmitted to the suction nozzle, so that the suction nozzle has suction force to suck the ink on the surface of the spray head 6.
In this embodiment, the second pump 19 between the connection of the fourth stage ink cartridge 16 and the first stage ink cartridge 1 can make the ink in the fourth stage ink cartridge 16 overcome the negative pressure inside the fourth stage ink cartridge 16 and be delivered from the ink outlet of the fourth stage ink cartridge 16 to the first stage ink cartridge 1.
In this embodiment, the filter between the connection of the four-stage ink cartridge 16 to the first-stage ink cartridge 1 filters the ink that has agglomerated inside the ink transferred from the four-stage ink cartridge 16 to the first-stage ink cartridge 1, leaving the agglomerated ink in the four-stage ink cartridge 16.
As a preferred embodiment of the present invention, a filtering device is disposed between the four-stage ink box 16 and the vacuum generator 15.
In this embodiment, the vacuum generator 15 extracts air from the four-stage ink cartridge 16 to provide negative pressure inside the four-stage ink cartridge 16, but the ink inside the four-stage ink cartridge 16 is in a liquid state and is easily extracted to the outside of the four-stage ink cartridge 16 along with the air in the process of extracting air. The ink inside the four stage ink cartridge 16 is left in the four stage ink cartridge 16 by the addition of the vacuum filter 14.
As a preferred embodiment of the present invention, the four-stage ink cartridge 16 is provided with a negative pressure gauge 17.
In this embodiment, the negative pressure gauge 17 is used to display the negative pressure condition inside the four-stage ink cartridge 16, so as to facilitate the viewing of the pressure condition inside the four-stage ink cartridge 16.
As a preferred embodiment of the embodiments of the present invention, a method of controlling an ink recycling system includes:
the ink of the first-stage ink box 1 is conveyed to the second-stage ink box 4;
controlling the ink flow of the secondary ink box 4 to the nozzle 6 through the positive and negative pressure device, closing the nozzle 6 for a set time t1 so as to flush the nozzle 6, and enabling the ink used for flushing the nozzle 6 to flow back to the primary ink box 1 through the ink outlet of the nozzle 6;
placing the spray head 6 above an ink absorption port of the third-level ink box, opening the spray head 6 for a set time t2 to enable ink to be extruded from an ink jet port and flow into the third-level ink box, and enabling the ink collected by the third-level ink box to flow back to the first-level ink box 1 through an ink outlet of the third-level ink box via a pipeline;
closing the nozzle 6, moving the nozzle 6 above the ink suction nozzle 11 to be attached to the ink suction nozzle 11, starting the ink suction nozzle 11 to suck residual ink on the surface of the nozzle 6, and enabling the sucked ink to enter a four-stage ink box 16; the ink inside the four-stage ink box 16 is driven by the second pump 19 to flow back to the first-stage ink box 1 through the ink outlet of the four-stage ink box 16.
In the embodiment, the ink outlet of the nozzle 6 is closed for a limited time period t1, for example, three seconds, during which the positive and negative pressure system 8 of the secondary ink tank 4 is controlled to make the ink in the secondary ink tank 4 flow to the nozzle 6; controlling the first pump 3 to ensure that a pipeline from an ink outlet of the spray head 6 to the first-stage ink box 1 is smooth; at this time, since the ink outlet hole of the head 6 is closed and the ink outlet is opened, the ink in the head 6 flows out to the first-stage ink cartridge 1 through the pipeline from the ink outlet hole of the head 6.
In this embodiment, the inkjet head 6 is moved to the V-shaped groove of the third-stage ink cartridge, the inkjet head 6 is opened for a set time period t2, for example, three seconds, so that the ink in the inkjet head 6 is pressed out from the inkjet hole, flows into the third-stage ink cartridge from the V-shaped groove, converges to the ink outlet at the bottom, and then flows into the first-stage ink cartridge 1 from the ink outlet of the third-stage ink cartridge through the pipeline.
In the present embodiment, the head 6 is closed, the head 6 is moved to the ink suction nozzle 11 of the tertiary cartridge, and the ink suction nozzle 11 is opened; the ink suction nozzle 11 is communicated with the four-stage ink box 16, and the four-stage ink box 16 has a large negative pressure inside through the vacuum generator 15, the negative pressure is transmitted to the ink suction nozzle 11 through a pipeline, and when the ink suction nozzle 11 is opened, the suction force with the negative pressure can suck the residual ink on the surface of the spray head 6 into the four-stage ink box 16. The ink in the four-stage ink box 16 is conveyed to the first-stage ink box 1 from the ink outlet of the four-stage ink box 16 through a pipeline under the action of a second pump 19.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An ink recycling system, comprising a primary ink cartridge and a secondary ink cartridge;
the ink outlet of the primary ink box is connected with the ink inlet of the secondary ink box through a pipeline, and a first filter and a first pump are sequentially arranged between the pipelines connected with the primary ink box and the secondary ink box along the ink flowing direction;
an ink outlet of the second-stage ink box is connected with an ink inlet of the spray head through a pipeline, and a second filter is arranged between the second-stage ink box and the pipeline connected with the spray head; the ink outlet of the spray head is connected with the ink inlet of the first-stage ink box through a pipeline, and a valve is arranged between the pipelines for connecting the spray head and the first-stage ink box.
2. The ink recycling system of claim 1, wherein the secondary cartridge top vent is connected to a positive and negative pressure system via a conduit; the positive-negative pressure system is used for forming positive pressure or negative pressure in the secondary ink box, and when the positive pressure is formed, ink in the secondary ink box is conveyed to the spray head; when the negative pressure is formed, the ink in the secondary ink cartridge stops being conveyed.
3. The ink recycling system of claim 1, further comprising a three stage ink cartridge.
The three-stage ink box is positioned right below the nozzle ink flushing position and used for collecting flushing ink discharged by the nozzle, and an ink outlet of the three-stage ink box is connected with an ink inlet of the first-stage ink box through a pipeline.
4. The ink recycling system of claim 3, wherein the upper cover of the third-stage cartridge is provided with a plurality of V-shaped grooves, the number of the V-shaped grooves and the relative positions of the V-shaped grooves correspond to the spray holes on the spray head, and the bottoms of the V-shaped grooves are provided with strip-shaped openings;
the upper surface of the V-shaped groove is provided with a Teflon coating.
5. The ink recycling system according to claim 3, wherein a plurality of ink suction nozzles are arranged inside the tertiary ink cartridge; the upper cover of the tertiary ink box is also provided with an ink absorption opening opposite to the spray head; the upper part of the ink suction nozzle penetrates out of the ink suction opening; the lower part of the ink suction nozzle is connected with the bottom of the third-level ink box through a spring.
6. The ink recycling system of claim 5, further comprising a four stage ink cartridge; the ink outlet of the four-stage ink box is connected with the ink inlet of the first-stage ink box; and the ink inlet of the four-stage ink box is connected with the suction nozzle.
7. The ink recycling system according to claim 6, wherein a third filter and a second pump are arranged between the pipelines connecting the ink outlet of the fourth-stage ink cartridge and the ink inlet of the first-stage ink cartridge in sequence along the ink flowing direction; the four-stage ink box is provided with an air outlet, and the air outlet of the four-stage ink box is connected with a vacuum generator through a pipeline.
8. The ink recycling system of claim 6, wherein a filter is disposed between the four stage cartridge and the vacuum generator.
9. The ink recycling system of claim 6, wherein the four-stage cartridge is provided with a negative pressure gauge.
10. A control method of an ink recycling system applied to the ink recycling system according to any one of claims 1 to 9, comprising:
conveying the ink of the first-stage ink box to the second-stage ink box;
controlling the ink flow of the secondary ink box to the nozzle through the positive and negative pressure device, closing the nozzle for a set time t1 so as to flush the nozzle, and enabling the ink for flushing the nozzle to flow back to the primary ink box through the ink outlet of the nozzle;
placing a spray head above an ink absorption port of the third-level ink box, opening the spray head for a set time period t2 to enable ink to be extruded through an ink jet port and flow into the third-level ink box, and enabling the ink collected by the third-level ink box to flow back to the first-level ink box through an ink outlet of the third-level ink box through a pipeline;
closing the spray head, moving the spray head above the ink absorption nozzle to be attached to the ink absorption nozzle, starting the ink absorption nozzle to absorb residual ink on the surface of the spray head, and enabling the absorbed ink to enter a four-stage ink box; and the ink in the four-stage ink box is driven by the second pump to flow back to the first-stage ink box through the ink outlet of the four-stage ink box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658675.6A CN115817025A (en) | 2022-12-22 | 2022-12-22 | Ink recycling system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211658675.6A CN115817025A (en) | 2022-12-22 | 2022-12-22 | Ink recycling system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115817025A true CN115817025A (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211658675.6A Pending CN115817025A (en) | 2022-12-22 | 2022-12-22 | Ink recycling system and control method thereof |
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| Country | Link |
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| CN (1) | CN115817025A (en) |
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- 2022-12-22 CN CN202211658675.6A patent/CN115817025A/en active Pending
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