Ink recovery structure for ink-jet printer

Abstract

The utility model discloses an ink recovery structure for an ink-jet printer, which comprises an ink box, a nozzle, a recovery pipe and a recovery box, the ink box is communicated with the nozzle through a gear pump and a first three-way joint, the free end of the first three-way joint is communicated with the ink box through a Venturi tube, one end of the recovery pipe is matched with the nozzle, and the other end of the recovery pipe is matched with the recovery box. A suspended heating cylinder is fixedly connected to the top of the inner side of the recycling box, the other end of the recycling pipe communicates with the heating cylinder, and an outlet in the bottom end of the recycling box communicates with the free end of the Venturi pipe. Ink recovered by the recovery pipe is absorbed by the sponge, temporary storage and preliminary filtration effects are achieved, blocky ink is preliminarily filtered, then the rotating plate is driven by the motor to drive the sliding rod to rotate, and due to structural limitation of the sliding groove, the T-shaped rod drives the balancing weight and the pressing plate to extrude the sponge to discharge ink. And the ink flows back into the ink box under the Venturi effect, so that the unused ink is recycled, and the resource waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a code inkjet printer technical field, especially a kind of ink recovery structure for code inkjet printer. BACKGROUND

[0002] Code inkjet printer is a kind of high-tech equipment by software control, adopts non-contact mode and carries out identification on product surface, is widely used in food, beverage, medicine, electronics etc.

[0003] However, in actual use process, to ensure the normal operation of nozzle, avoid the nozzle blockage due to the condensation of ink, must be carried out to nozzle ink discharge treatment and flushing operation before each time starting work.The process effectively removes residual ink in nozzle, ensures the stability and consistency of jetting effect, but also brings significant problem: the ink discharged is mostly directly discarded, not only causes great resource waste, also can cause pollution to environment, especially in high-frequency use industrial scene, this waste phenomenon is particularly outstanding. UTILITY MODEL CONTENT

[0004] The utility model aims at: in order to solve the technical problem mentioned in the above background art, and propose a kind of ink recovery structure for code inkjet printer.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] An ink recovery structure for code inkjet printer, including ink cartridge, nozzle, recovery pipe and recovery box, the ink cartridge is communicated nozzle by gear pump and first three-way joint, pump and ink cartridge are connected with pump front filter between by pipeline, first three-way joint and nozzle are sequentially communicated with main filter, buffer, ink valve and nozzle front filter between by pipeline, the free end of first three-way joint and ink cartridge are communicated by venturi, recovery pipe one end is cooperated with nozzle, the inside top of recovery box is fixedly connected with the heating cylinder of suspension, recovery pipe other end is communicated with heating cylinder, recovery box bottom end outlet is communicated with the free end of venturi, and the exhaust pipe is communicated on ink cartridge.

[0007] As a further description of the above technical scheme:

[0008] The heating cylinder is fixedly connected with filter plate, and sponge is arranged on the filter plate and matched with the heating cylinder, and the other end of recovery pipe is in contact with the sponge.

[0009] As a further description of the above technical scheme:

[0010] The slidingly arranged pressure plate is arranged in the heating cylinder, a T-shaped rod is arranged through the top of the recovery box, the T-shaped rod is fixedly connected with the pressure plate, a sliding groove is arranged on the horizontal end of the T-shaped rod, a motor is fixedly installed on the top of the recovery box, a rotating plate is fixedly sleeved on the output shaft of the motor, and a sliding rod is eccentrically connected to the rotating plate and slidably matched with the sliding groove.

[0011] As a further description of the above technical solution:

[0012] A counterweight is fixedly sleeved on the T-shaped rod.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the recovery box is coated with a fluororesin coating.

[0015] As a further description of the above technical solution:

[0016] A U-shaped pipe is fixedly connected to the ink box, one end of the U-shaped pipe is inserted into the ink box, and a filter, a viscometer, a circulation valve, a third three-way joint, a viscosity pump and a second three-way joint are sequentially installed on the U-shaped pipe.

[0017] As a further description of the above technical solution:

[0018] The third three-way joint is sequentially connected with a mixing valve, a solvent filter and a solvent box through pipelines.

[0019] As a further description of the above technical solution:

[0020] A free end of the second three-way joint is fixedly connected with an ink discharge pipe.

[0021] As a further description of the above technical solution:

[0022] 1、In the utility model, the unused ink is recovered through the recovery pipe, the recovered ink enters the recovery box, the ink recovered through the recovery pipe is absorbed by the sponge, the function of temporary storage and preliminary filtration is achieved, the blocky ink is preliminarily filtered, then the rotating plate is driven to rotate the sliding rod through the motor, the T-shaped rod drives the counterweight and the pressure plate to extrude the sponge to discharge ink due to the structural limitation of the sliding groove, the filter plate plays the role of secondary filtration, the blocky ink is absorbed by the sponge again after being melted through heating, then the ink is discharged under the extrusion and returns to the ink box under the Venturi effect, the recycling of the unused ink is realized, and the resource waste is reduced.

[0023] 2. In the utility model, the ink in the ink box is detected for viscosity and impurities are removed through the filter, the viscometer and the circulation valve, when the viscosity needs to be further adjusted, the appropriate solvent is extracted from the solvent box through the mixing valve and the solvent filter, the ink viscosity is adjusted and then reflows into the ink box. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A pipeline structure schematic view of the ink recycling structure for the ink-jet printer is shown according to the utility model embodiment;

[0025] Figure 2 An internal structure schematic view of the recycling box is shown according to the utility model embodiment;

[0026] Figure 3 A three-dimensional structure schematic view of the recycling box is shown according to the utility model embodiment.

[0027] LEGEND:

[0028] 1, ink box; 2, pre-pump filter; 3, gear pump; 4, first three-way joint; 5, main filter; 6, buffer; 7, pressure sensor; 8, ink valve; 9, pre-ejection filter; 10, ejection head; 11, recycling pipe; 12, venturi; 13, second three-way joint; 14, viscosity pump; 15, third three-way joint; 16, circulation valve; 17, viscometer; 18, filter; 19, mixing valve; 20, solvent filter; 21, solvent box; 22, counterweight; 23, ink discharge pipe; 24, exhaust pipe; 25, recycling box; 26, T-shaped rod; 27, sliding chute; 28, sliding rod; 29, rotating plate; 30, motor; 31, fluororesin coating; 32, heating cylinder; 33, filter plate; 34, sponge; 35, pressing plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Please refer to Figures 1-3The utility model provides a technical scheme: an ink recovery structure for a code spraying machine, which comprises an ink box 1, a nozzle 10, a recovery pipe 11 and a recovery box 25. The ink box 1 is connected to the nozzle 10 through a gear pump 3 and a first three-way joint 4. A pre-pump filter 2 is connected between the gear pump 3 and the ink box 1 through a pipeline. A main filter 5, a buffer 6, an ink valve 8 and a pre-nozzle filter 9 are connected in sequence between the first three-way joint 4 and the nozzle 10 through a pipeline. A Venturi tube 12 is connected between the free end of the first three-way joint 4 and the ink box 1. One end of the recovery pipe 11 is matched with the nozzle 10. A suspended heating cylinder 32 is fixedly connected to the inside top of the recovery box 25. The other end of the recovery pipe 11 is connected to the heating cylinder 32. The bottom outlet of the recovery box 25 is connected to the free end of the Venturi tube 12. A coiled pipeline is fixedly connected to the ink box 1, and one end of the coiled pipeline is inserted into the ink box 1. A filter 18, a viscometer 17, a circulation valve 16, a third three-way joint 15, a viscosity pump 14 and a second three-way joint 13 are installed in sequence on the coiled pipeline. The free end of the second three-way joint 13 is fixedly connected to a ink discharge pipe 23. The third three-way joint 15 is connected in sequence to a mixing valve 19, a solvent filter 20 and a solvent box 21 through a pipeline. An exhaust pipe 24 is connected to the ink box 1. The ink from the ink box 1 enters the gear pump 3 through the pre-pump filter 2. After passing through the first three-way joint 4, the ink passes through the main filter 5, the buffer 6, the ink valve 8 and the pre-nozzle filter 9 in sequence and finally reaches the nozzle 10, thereby completing the spraying task. A pressure sensor 7 is arranged to detect and control the pressure in the ink valve 8. Then, the unused ink, including the unused ink in the inkjet process and the residual ink in the process of cleaning the nozzle, is recovered through the recovery pipe 11. The recovered ink enters the recovery box 25 and returns to the ink box 1 under the Venturi effect of the Venturi tube 12, thereby realizing the recycling of the unused ink and reducing resource waste.

[0031] Further, during the inkjet process, the circulation valve 16 is arranged to ensure the stability of the ink flow. The ink in the ink box 1 is detected for viscosity and impurities by the filter 18, the viscometer 17 and the circulation valve 16. When it is necessary to further adjust the viscosity, an appropriate amount of solvent is extracted from the solvent box 21 through the mixing valve 19 and the solvent filter 20, and the ink is adjusted for viscosity and then reflows into the ink box 1.

[0032] Specifically, as Figure 2 and Figure 3As shown, the heating cylinder 32 is fixedly connected with a filter plate 33, the filter plate 33 is provided with a sponge 34 matched with the heating cylinder 32, the other end of the recovery pipe 11 is in contact with the sponge 34, the heating cylinder 32 is slidably provided with a pressing plate 35, the T-shaped rod 26 is fixedly connected with the pressing plate 35, the T-shaped rod 26 is fixedly sleeved with the counterweight 22, the horizontal end of the T-shaped rod 26 is provided with a sliding groove 27, the recovery box 25 is fixedly installed with the motor 30 on the top, the output shaft of the motor 30 is fixedly sleeved with a rotating plate 29, the rotating plate 29 is eccentrically connected with a sliding rod 28 slidably matched with the sliding groove 27. The ink recovered through the recovery pipe 11 is absorbed by the sponge 34, which plays a role of temporary storage and preliminary filtration, the blocky ink is preliminarily filtered, then the rotating plate 29 is driven by the motor 30 to drive the sliding rod 28 to rotate, due to the structural limitation of the sliding groove 27, the T-shaped rod 26 drives the counterweight and the pressing plate 35 to extrude the sponge 34 to discharge ink, the filter plate 33 plays a role of secondary filtration, wherein the blocky ink is melted by heating and then is secondarily absorbed by the sponge 34, then the ink is discharged under the extrusion. The design of sponge absorption and mechanical extrusion can effectively separate impurities in the ink, and ensure that the quality of the recovered ink meets the requirements.

[0033] Specifically, as shown in the figure, Figure 3 The inner wall of the recovery box 25 is coated with a fluororesin coating 31, which can prevent the ink from adhering to the inner wall of the recovery box 25, thereby achieving the purpose of effectively recovering the ink.

[0034] Working principle: in use, first, the unused ink is recovered through the recovery pipe 11, including the unused ink in the inkjet process and the residual ink in the cleaning process of the inkjet head, the recovered ink enters the recovery box 25, second, the ink recovered through the recovery pipe 11 is absorbed by the sponge 34, which plays a role of temporary storage and preliminary filtration, the blocky ink is preliminarily filtered, then the rotating plate 29 is driven by the motor 30 to drive the sliding rod 28 to rotate, due to the structural limitation of the sliding groove 27, the T-shaped rod 26 drives the counterweight and the pressing plate 35 to extrude the sponge 34 to discharge ink, the filter plate 33 plays a role of secondary filtration, wherein the blocky ink is melted by heating and then is secondarily absorbed by the sponge 34, then the ink is discharged under the extrusion, and under the Venturi effect, it flows back into the ink box, realizing the recycling of the unused ink and reducing resource waste.

[0035] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An ink recovery structure for a code jet printer, comprising an ink cartridge (1), a nozzle (10), a recovery pipe (11) and a recovery cartridge (25), characterized in that, The ink box (1) is communicated with the nozzle (10) through the gear pump (3) and the first three-way joint (4), the gear pump (3) and the ink box (1) are connected with the pump pre-filter (2) through the pipeline, the first three-way joint (4) and the nozzle (10) are communicated with the main filter (5), the buffer (6), the ink valve (8) and the pre-filter (9) through the pipeline in sequence, the free end of the first three-way joint (4) and the ink box (1) are communicated through the venturi tube (12), one end of the recovery pipe (11) is matched with the nozzle (10), the inside top of the recovery box (25) is fixedly connected with the suspended heating cylinder (32), the other end of the recovery pipe (11) is communicated with the heating cylinder (32), the bottom outlet of the recovery box (25) is communicated with the free end of the venturi tube (12), and the ink box (1) is communicated with the exhaust pipe (24).

2. The ink recovery structure for a code printer according to claim 1, wherein The filter plate (33) is fixedly connected in the heating cylinder (32), and the sponge (34) matched with the heating cylinder (32) is arranged on the filter plate (33), and the other end of the recovery pipe (11) is in contact with the sponge (34).

3. The ink recovery structure for a code inkjet printer according to claim 2, wherein The pressing plate (35) is slidably arranged in the heating cylinder (32), the T-shaped rod (26) is arranged in the recovery box (25) in a penetrating mode, the T-shaped rod (26) is fixedly connected with the pressing plate (35), the horizontal end of the T-shaped rod (26) is provided with the sliding groove (27), the motor (30) is fixedly installed on the top of the recovery box (25), the output shaft of the motor (30) is fixedly provided with the rotating plate (29), and the eccentric connection is arranged on the rotating plate (29) and the sliding rod (28) is slidably matched with the sliding groove (27).

4. The ink recovery structure for a code inkjet printer according to claim 3, wherein The counterweight (22) is fixedly sleeved on the T-shaped rod (26).

5. The ink recovery structure for a code inkjet printer according to claim 4, wherein The inner wall of the recovery box (25) is coated with a fluororesin coating (31).

6. The ink recovery structure for a code printer according to claim 5, wherein The ink box (1) is fixedly communicated with the L-shaped pipeline, one end of the L-shaped pipeline is inserted into the ink box (1), and the filter (18), the viscometer (17), the circulation valve (16), the third three-way joint (15), the viscosity pump (14) and the second three-way joint (13) are sequentially installed on the L-shaped pipeline.

7. The ink recovery structure for a code inkjet printer according to claim 6, wherein The third three-way joint (15) is sequentially connected with the mixing valve (19), the solvent filter (20) and the solvent box (21) through the pipeline.

8. The ink recovery structure for a code inkjet printer according to claim 7, wherein The free end of the second three-way joint (13) is fixedly communicated with the ink discharge pipe (23).

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