Ink supply device of ink-jet printer

Abstract

The utility model discloses an ink supply device of an ink-jet printer, which comprises an ink box and a nozzle, the middle part of the ink box is fixedly connected with a fixed plate, the fixed plate is provided with an inner group of concentric ring grooves and an outer group of concentric ring grooves, and the concentric ring grooves are respectively and fixedly connected with a first filtering ring net and a second filtering ring net. The ink box is fixedly communicated with an ink outlet pipe and a circulating pipe on the two sides of the bottom of the fixing plate, the ink box is communicated with a nozzle through a gear pump and the ink outlet pipe, and the ink box is provided with an ink defoaming mechanism above the fixing plate. According to the utility model, ink is sprayed into the first liquid outlet plate and the second liquid outlet plate from the periphery through the through holes in the ink inlet pipe, and then flows out along the first flow guide plate and the second flow guide plate through the liquid outlet holes; and then the ink enters the lower part of the ink box after impurities are filtered through the two groups of filtering ring nets and bubbles are filtered for the second time, so that the ink is discharged, and efficient bubble removal and purification of the ink are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to ink jet printer technical field especially relates to an ink jet printer ink supply device. BACKGROUND

[0002] The ink jet printer is a kind of equipment that is marked on product using non-contact mode by software control, in the production line process, as a kind of identification and recognition technology, ink jet printing production date, batch number, bar code and anti-forgery mark, Chinese character, trademark pattern can be used, with the advantages such as clear identification, not easy to wear, suitable for high-speed production.

[0003] The existing ink jet printer ink supply device when using, the ink in the ink cartridge is not removed due to long-term storage in mixed uneven and the air bubble contained in the ink, leading to the uneven ink of ejection, and the unused ink of ejection cannot be collected, waste resources. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of ink jet printer ink supply devices to solve the technical problems mentioned in the above background art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] An ink jet printer ink supply device, including ink cartridge and nozzle, fixedly connected with fixed plate in ink cartridge middle part, fixed plate is equipped with two sets of concentric ring grooves inside and outside, first filter ring net and second filter ring net are fixedly connected in the concentric ring groove respectively, ink cartridge is fixedly connected with ink outlet pipe and circulation pipe on the both sides of fixed plate bottom, ink cartridge is communicated nozzle by gear pump and ink outlet pipe, ink cartridge is provided with ink defoaming mechanism above fixed plate, ink cartridge top is fixedly communicated with ink inlet pipe and exhaust pipe, ink inlet pipe top side is fixedly communicated with reflux pipe.

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

[0008] The ink defoaming mechanism includes hollow shaft, hollow shaft is rotatably installed between fixed plate and ink cartridge, the first liquid outlet plate and the second liquid outlet plate of taper are fixedly sleeved on the outer side of hollow shaft along the axis, two sets of liquid outlet plates are cavity structure, and the liquid outlet hole is formed in the bottom side of liquid outlet plate, the taper flow guide plate is sequentially sleeved on the outer side of hollow shaft below adjacent liquid outlet plate, a plurality of thorn needles are arranged on the flow guide plate, and the hollow shaft is communicated with the internal cavity of liquid outlet plate.

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

[0010] The ink inlet pipe extends into the hollow shaft, and a plurality of through holes are formed in the ink inlet pipe at the position communicated with the liquid outlet plate.

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

[0012] The hollow shaft is fixedly sleeved with a driven gear, and the top of the ink box is fixedly installed with a motor, and the output shaft of the motor is fixedly sleeved with a driving gear which is meshed and connected with the driven gear.

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

[0014] The ink outlet pipe and the gear pump are connected with a pre-pump filter, the gear pump and the nozzle are connected with a main filter, a buffer, an ink valve and a pre-nozzle filter in sequence through pipelines.

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

[0016] The circulation pipe and the return pipe are connected with a filter, a viscosity meter, a circulation valve, a second three-way joint, a viscosity pump and a first three-way joint in sequence through pipelines.

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

[0018] The free end of the second three-way joint is connected with a mixing valve, a solvent filter and a solvent box in sequence through pipelines.

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

[0020] The free end of the first three-way joint is fixedly communicated with an ink discharge pipe.

[0021] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0022] 1、In the present application, the ink is sprayed into the first and second liquid outlet plates from the through holes on the ink inlet pipe, and then flows out through the liquid outlet holes along the first and second flow guide plates. The water bubbles in the ink flow are pierced by the needles on the flow guide plates, and then enter the lower part of the ink box after being filtered by the two groups of filter ring nets and secondary filtered water bubbles, for ink discharge, realizing efficient bubble removal and purification of the ink.

[0023] 2、In the present application, the driving gear is driven by the motor to rotate the driven gear, and the hollow shaft is driven by the driven gear to rotate the two groups of liquid outlet plates at a slow and uniform speed, so that the ink is distributed more uniformly. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Fig. 1 shows a schematic diagram of the pipeline arrangement of an ink supply device of a code inkjet according to an embodiment of the present application;

[0025] Figure 2 Fig. 2 shows a schematic diagram of the internal structure of an ink box according to an embodiment of the present application;

[0026] Figure 3 A perspective structural schematic view of an ink box is shown according to an embodiment of the present application.

[0027] Figure 4 A cross-sectional schematic view of a first liquid outlet plate and a first flow guide plate is shown according to an embodiment of the present application.

[0028] Legend:

[0029] 1, ink box; 2, pre-pump filter; 3, gear pump; 4, main filter; 5, buffer; 6, pressure sensor; 7, ink valve; 8, pre-ejection filter; 9, ejection head; 10, first three-way joint; 11, viscosity pump; 12, second three-way joint; 13, circulation valve; 14, viscometer; 15, filter; 16, exhaust pipe; 17, mixing valve; 18, solvent filter; 19, solvent box; 20, ink discharge pipe; 21, ink outlet pipe; 22, circulation pipe; 23, first filter ring net; 24, second filter ring net; 25, fixed plate; 26, first flow guide plate; 27, second flow guide plate; 28, lancet; 29, first liquid outlet plate; 30, second liquid outlet plate; 31, liquid outlet hole; 32, hollow shaft; 33, ink inlet pipe; 34, driven gear; 35, driving gear; 36, motor; 37, return pipe; 38, through hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-4The utility model provides a technical scheme: a kind of inkjet printer ink supply device, including ink box 1 and nozzle 9, fixedly connected with fixed plate 25 in ink box 1 middle part, ink box 1 is fixedly communicated with ink outlet pipe 21 and circulation pipe 22 in fixed plate 25 bottom both sides, ink box 1 top is fixedly communicated with ink inlet pipe 33 and exhaust pipe 16, ink inlet pipe 33 top side is fixedly communicated with reflux pipe 37, ink box 1 is communicated nozzle 9 by gear pump 3 and ink outlet pipe 21, pump front filter 2 is connected between ink outlet pipe 21 and gear pump 3, main filter 4, buffer 5, ink valve 7 and spray front filter 8 are sequentially connected between gear pump 3 and nozzle 9 by pipeline, filter 15, viscometer 14, circulation valve 13, second three-way joint 12, viscosity pump 11 and first three-way joint 10 are sequentially connected between circulation pipe 22 and reflux pipe 37 by pipeline, ink outlet pipe 20 is fixedly communicated in the free end of first three-way joint 10, mixed valve 17, solvent filter 18 and solvent box 19 are sequentially connected by pipeline in the free end of second three-way joint 12 under the action of gear pump 3, ink is extracted from ink box to nozzle 9 and is sprayed to realize ink-jet operation, in this process, ink reaches nozzle and completes ink-jet task by passing pump front filter 2, main filter 4, buffer 5, ink valve 7 and spray front filter 8 in turn, wherein, pump front filter 2 carries out preliminary filtration to the ink flowing in ink box 1, main filter 4 is used to remove larger particle impurities in ink, buffer 5 is used to stabilize pressure fluctuation, in addition, pressure sensor 6 is also provided for detecting pressure and regulating ink valve 7 to control the flow and flow direction of ink, spray front filter 8 is finely filtered to ink, to ensure that ink at nozzle 9 is pure.

[0032] Further, ink is extracted from ink box 1 by viscosity pump 11 and mixed with solvent, and then returns to ink box 1 through reflux pipe 37, the viscosity of ink is detected by viscometer 14, and the amount of solvent pumped by viscosity pump 11 is adjusted according to the viscosity, so as to ensure the quality of ink.

[0033] Specifically, as Figures 1-4As shown, the fixed plate 25 is provided with two groups of concentric ring grooves, and the first filter ring net 23 and the second filter ring net 24 are fixedly connected in the concentric ring grooves respectively. The ink box 1 is provided with an ink defoaming mechanism above the fixed plate 25. The ink defoaming mechanism comprises a hollow shaft 32 which is rotatably installed between the fixed plate 25 and the ink box 1. A driven gear 34 is fixedly sleeved on the hollow shaft 32. A motor 36 is fixedly installed on the top of the ink box 1. A driving gear 35 which is engaged with the driven gear 34 is fixedly sleeved on the output shaft of the motor 36. A tapered first liquid outlet plate 29 and a tapered second liquid outlet plate 30 are fixedly sleeved on the outer side of the hollow shaft 32 in the axial direction. The two groups of liquid outlet plates are hollow structures, and the bottom side of the liquid outlet plate is provided with a liquid outlet hole 31. A tapered flow guide plate is fixedly sleeved on the outer side of the hollow shaft 32 below the adjacent liquid outlet plate. A plurality of lancets 28 are arranged on the flow guide plate. The hollow shaft 32 is in communication with the internal cavity of the liquid outlet plate. An ink inlet pipe 33 extends into the hollow shaft 32. A plurality of through holes 38 are formed in the ink inlet pipe 33 at the position where the hollow shaft 32 communicates with the liquid outlet plate. The ink is sprayed into the first liquid outlet plate 29 and the second liquid outlet plate 30 from the surrounding through the through holes 38 of the ink inlet pipe 33. Then the ink flows out along the first flow guide plate 26 and the second flow guide plate 27 through the liquid outlet hole 31. The bubbles in the ink flow are pierced by the lancets 28 on the flow guide plate. Then the ink is filtered by the two groups of filter ring nets and is filtered again to remove bubbles before entering the ink box 1 below for ink outlet, realizing efficient bubble removal and purification of the ink. The motor 36 drives the driving gear 35 to rotate, the driven gear 34 drives the hollow shaft 32 to drive the two groups of liquid outlet plates 30 to rotate slowly and uniformly, so that the distribution of the ink is more uniform.

[0034] Working principle: in use, first, the ink is sprayed into the first liquid outlet plate 29 and the second liquid outlet plate 30 from the surrounding through the through holes 38 of the ink inlet pipe 33. Then the ink flows out along the first flow guide plate 26 and the second flow guide plate 27 through the liquid outlet hole 31. The bubbles in the ink flow are pierced by the lancets 28 on the flow guide plate. Then the ink is filtered by the two groups of filter ring nets and is filtered again to remove bubbles before entering the ink box 1 below for ink outlet, wherein the motor 36 drives the driving gear 35 to rotate, the driven gear 34 drives the hollow shaft 32 to drive the two groups of liquid outlet plates 30 to rotate slowly and uniformly, so that the distribution of the ink is more uniform.

[0035] Secondly, under the action of the gear pump 3, the ink is pumped out of the ink box to the nozzle 9 to be sprayed to realize the code printing operation. In this process, the ink passes through the pre-pump filter 2, the main filter 4, the buffer 5, the ink valve 7 and the pre-nozzle filter 8 in sequence to reach the nozzle to complete the code printing task.

[0036] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change 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 supply device for an inkjet printer comprising an ink cartridge (1) and a printhead (9), characterized in that, The ink box (1) is fixedly connected with a fixed plate (25) in the middle, the fixed plate (25) is provided with two sets of concentric ring grooves inside and outside, the concentric ring grooves are fixedly connected with a first filter ring net (23) and a second filter ring net (24) respectively, the ink box (1) is fixedly connected with an ink outlet pipe (21) and a circulation pipe (22) on the two sides of the bottom of the fixed plate (25), the ink box (1) is communicated with a nozzle (9) through a gear pump (3) and the ink outlet pipe (21), the ink box (1) is provided with an ink defoaming mechanism above the fixed plate (25), the ink box (1) is fixedly connected with an ink inlet pipe (33) and an exhaust pipe (16) on the top, and the ink inlet pipe (33) is fixedly connected with a reflux pipe (37) on one side of the top.

2. The ink supply device for a inkjet printer according to claim 1, wherein The ink defoaming mechanism comprises a hollow shaft (32), which is rotatably installed between the fixed plate (25) and the ink box (1), the hollow shaft (32) is fixedly sleeved with a conical first liquid outlet plate (29) and a conical second liquid outlet plate (30) on the outer side in the axial direction, both sets of liquid outlet plates are hollow structures, and the bottom side of the liquid outlet plate is provided with a liquid outlet hole (31), the outer side of the hollow shaft (32) is sequentially sleeved with a conical flow guide plate below the adjacent liquid outlet plate, a plurality of lancets (28) are arranged on the flow guide plate, and the hollow shaft (32) is communicated with the internal cavities of the liquid outlet plates.

3. The ink supply device for an inkjet printer according to claim 2, wherein The ink inlet pipe (33) extends into the hollow shaft (32), and a plurality of through holes (38) are formed in the ink inlet pipe (33) at the position communicated with the liquid outlet plate of the hollow shaft (32).

4. The ink supply apparatus for an inkjet printer according to claim 3, wherein The hollow shaft (32) is fixedly sleeved with a driven gear (34), and a motor (36) is fixedly installed on the top of the ink box (1), a driving gear (35) engagedly connected with the driven gear (34) is fixedly sleeved on the output shaft of the motor (36).

5. The inkjet printer ink supply apparatus of claim 4, wherein, A pre-pump filter (2) is connected between the ink outlet pipe (21) and the gear pump (3), and a main filter (4), a buffer (5), an ink valve (7) and a pre-nozzle filter (8) are sequentially connected between the gear pump (3) and the nozzle (9) through pipelines.

6. The inkjet printer ink supply apparatus of claim 5, wherein, A filter (15), a viscosity meter (14), a circulation valve (13), a second three-way joint (12), a viscosity pump (11) and a first three-way joint (10) are sequentially connected between the circulation pipe (22) and the reflux pipe (37) through pipelines.

7. The inkjet printer ink supply apparatus of claim 6, wherein, The free end of the second three-way joint (12) is sequentially connected with a mixing valve (17), a solvent filter (18) and a solvent box (19) through pipelines.

8. The ink supply apparatus for an inkjet printer according to claim 7, wherein The free end of the first three-way joint (10) is fixedly connected with an ink discharge pipe (20).

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